Minimize Level 2 Product Definitions

Contents

1 Specification of Level 2 Products and Auxiliary Products

2 Product name convention

3 Product classification

4 Product overview

5 Euler Angles

6 Core Field Models

7 Lithospheric Field Models

8 Mantle Conductivity

9 External Field and Current Systems

10 Precise Orbit Determination Products

11 Magnetic Forcing of the Upper Atmosphere

12 Quick Look reports for L1b products

13 Auxiliary data

14 Level-2 processing chains


Specification of Level 2 Products and Auxiliary Products

This chapter starts with the description of the product name convention in section 2 and the product classification in section 3. The chapter follows on with a product overview (section 4) and then specifies each product in detail (section 5).

Product name convention

According to [AD-13], Swarm product names consist of 10 digits, which are subdivided into two sub-fields as follows: TTTTTTTTTT = FFFFDDDDDD, where FFFF = File Category and DDDDDD = Semantic Descriptor.

For Level 2 products FFFF = FFFx. FFF describes the product type (e.g., MCO - Magnetic Core Field, AUX - Auxiliary Product), and x = _ if the product is derived from (available for) the satellite constellation, and x = A, B or C, respectively for Swarm A, Swarm B or Swarm C, if single satellite products are derived.

For Level 2 products DDDDDD = DDDy2z. DDD provides a description which is specific for each product, for example TMS for time series or SHA for spherical harmonics. y = i for intermediate products and y = _ when final products are concerned.

The last two digits describe the product level [AD-13]. Therefore digit 9 is always 2, identifying the product as a Level 2 product.

The last digit z indicates the origin or the purpose of the product. This applies especially when different chains lead to the same science product. This last digit z can be:

C derived from Comprehensive Inversion
D derived from dedicated chain
F Fast Track product
E Extended, only applied for extended lithospheric field maps (MLI_SHA_2E)
_ Only one chain has been indentified to lead to this product type
a Product derived from candidate chain a (only applied for mantle conductivity products - derived in the frequency domain)
b Product derived from candidate chain b (only applied for mantle conductivity products - derived in the time domain)


For example, the intermediate product of the spherical harmonic model of the core field derived from CI is named MCO_SHAi2C, and the final product of the spherical harmonic model of the core field derived from dedicated inversion is named MCO_SHA_2D. The product of Eastward Electric Field derived from Swarm C is called EEFCTMS_2F. The Auxiliary data product for the KP index is called AUX_KP__2_.

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Product classification

Different product types exist in the Level 2 processor.

Level 2 products

Three Categories have been defined in [AD-12]. Each Level 2 product is attributed to one of these categories.


CAT-1: Complex algorithms contributing to the generation of a Level 2 product of the various sources of the Earth's magnetic field, of thermospheric products, and for Precise Orbit determination. The generation of CAT-1 products require interaction with experienced scientists. The products will be processed by SCARF, and will be distributed by ESA.


CAT-2: Algorithms leading to a Level 2 product with minimum delay with respect to the generation of the corresponding Level 1b data. The generation of CAT-2 products is designed to run automatically. The CAT-2 products will be generated and distributed by ESA.

Intermediate and final products

Some Level 2 products are further characterized by product types. These are:

  • Intermediate products are Level 2 products which are independently validated before their release to final Level 2 products. Intermediate products are delivered to PDGS together with an intermediate validation report. An intermediate validation report exists to each chain that submit an intermediate product. The intermediate validation report product name is FFF_VALi2z, e.g., MCO_VALi2C.
  • Final Level 2 products are validated intermediate products or products which are released on Fast Track including internal quality check (Fast Track Products). Only Final products are distributed to the end users.
Candidate products

For all magnetic field products and the 3D-mantle conductivity product two or three different candidates can be identified reaching to the same product quantity. For all magnetic field products, the candidates are derived in the Comprehensive Inversion Chain or in Dedicated Inversion Chains or as Fast Track products. This identification is indicated by the last character in the product name C, D or F (see also section 2).

In the case of 3D mantle conductivity model, the two candidates differ in that they are derived in the frequency domain or in the time domain. This differentiation, a or b, is indicated by the last character in the product name. All other products have only one candidate.

Fast Track products

Fast Track products have no intermediate stage. The validation is performed by means of an internal quality check in the algorithms of each of these products, and the quality of the product is provided, e.g., by a quality flag. Fast Track products are released without a validation report.

Three CAT-1 magnetic products will be derived on Fast Track (Euler angles, core field model, magnetospheric model). All CAT-2 products are Fast Track products. For all Fast Track products, the last letter of the product name is F (see section 2).

Final validation reports

For non-Fast Track products a validation report is required when releasing the intermediate products to the final product stage. A final validation report is provided for each product chain, e.g., MCO_VAL_2D, for the final validation report for the dedicated chain for the core field model. The input of the final validation report is the intermediate product, the intermediate validation report and auxiliary products.

The intercomparison between products of two chains in one product family (e.g., MCO_SHA_2D and MCO_SHA_2C), will be released in one validation report called, e.g, MCO_VAL_2_.

Validation report products exist for following product families: Euler angles, core field models, lithospheric field models, ionospheric models, magnetosphere models, 1D-mantle conductivity (mantle conductivity model and C-response), 3D-mantle conductivity (mantle conductivity model and C-response maps), precise orbit determination and thermospheric winds and density.

Final validation reports are Final Level 2 products.

Quick Look reports

One Quick-Look report exists for following data groups:

  • Magnetic field measurements (MAG_QL__2_)
  • Ionospheric plasma parameters from EFI (EFI_QL__2_)

The QL reports are provided as PDF files.

Auxiliary products

Auxiliary products are necessary prior or during processing of high precision Swarm Level 2 products but do not result from the Swarm L0 or L1b processor. Auxiliary products are further classified in auxiliary models and auxiliary data.

For auxiliary products that are needed in CAT-1 as well as in CAT-2 chains, two different products are defined. The acquisition of auxiliary products for CAT-2 products lies in the responsibility of PDGS in the course of the mission. The name of all CAT-2 auxiliary products end with the letter F – Fast track.

Level 2 product selection

All Level 2 Cat-1 Fast-Track, Quick-Look, Orbit Determination, and Upper Atmosphere products (see Table below) will be transferred from the product creator (L2PS) to PDGS at ESA for immediate dissemination to the user community.

Level 2 Cat-1 magnetic products (all non Fast-Track magnetic field model and mantle conductivity products, see Table 2) are subject to independent validation by BGS. The validation reports together with the model products are further subject to an independent review performed by the product creator (L2PS), external experts and the Agency. Based on this review, accepted Level 2 products will be transferred from BGS to PDGS for dissemination to the user community.

All Level 2 Cat-2 product are produced and distributed by PDGS and are not subject to external validation.

Minimize Product Overview

This section provides an overview about all L2 product, intermediate (Table 1) and final (Table 2), and auxiliary products (Table 3). Each product is described in detail in sections 5 - 13.

Intermediate Level 2 products

Science Objective Product Name Description Format Extension
All, Needed for L1b processing MSW_EULi2C CAT-1: Euler angles for all satellites ASCII listing .txt
MSW_VALi2C Intermediate validation report PDF report .pdf
MSW_EULi2D CAT-1: Euler angles for all satellites ASCII listing .txt
MSW_VALi2D Intermediate validation report PDF report .pdf
O1: Core Field MCO_SHAi2C CAT-1: Spherical harmonic model of the main (core) field and its temporal variation ASCII listing (SHC) .shc
MCO_VALi2C Intermediate validation report PDF report .pdf
MCO_SHAi2D CAT-1: Spherical harmonic model of the main (core) field and its temporal variation ASCII listing (SHC) .shc
MCO_VALi2D Intermediate validation report PDF report .pdf
O2: Lithospheric Field MLI_SHAi2C CAT-1: Spherical harmonic model of the lithospheric field ASCII listing (SHC) .shc
MLI_VALi2C Intermediate validation report PDF report .pdf
MLI_SHAi2D CAT-1: Spherical harmonic model of the lithospheric field. ASCII listing (SHC) .shc
MLI_VALi2D Intermediate validation report PDF report .pdf
MLI_SHAi2E CAT-1: Extended spherical harmonic model of the lithospheric field ASCII listing (SHC) .shc
MLI_VALi2E Intermediate validation report PDF report .pdf
O3: Mantle Conductivity Q3D_CI_i2_ CAT-1: Q-matrix of 3D mantle conductivity including oceans ASCII listing .txt
MIN_1DMi2_ CAT-1: 1D model of mantle conductivity ASCII listing .txt
MI1_VALi2_ Intermediate validation report PDF report .pdf
MIN_3DMi2a CAT-1: 3D model of mantle conductivity (frequency domain) ASCII listing .txt
MIN_3DMi2b CAT-1: 3D model of mantle conductivity (time domain) ASCII listing .txt
MI3_VALi2_ Intermediate validation report PDF report .pdf
MCR_1DMi2_ CAT-1: 1D C-response ASCII listing .txt
MC1_VALi2_ Intermediate validation report PDF report .pdf
MCR_3DMi2_ CAT-1: 3D C-response maps ASCII listing .txt
MC3_VALi2_ Intermediate validation report PDF report .pdf
O4: External Current Systems MMA_SHAi2C CAT-1: Spherical harmonic model of the large-scale magnetospheric field and its Earth-induced counterpart CDF .cdf
MMA_VALi2C Intermediate validation report PDF report .pdf
MIO_SHAi2C CAT-1: Spherical harmonic model of the daily geomagnetic variation at middle latitudes (Sq and low latitudes – EEJ) ASCII listing .txt
MIO_VALi2C Intermediate validation report PDF report .pdf
MIO_SHAi2D CAT-1: Spherical harmonic model of the daily geomagnetic variation at middle latitudes (Sq and low latitudes - EEJ) ASCII listing .txt
MIO_VALi2D Intermediate validation report PDF report .pdf
Accelerometry ACCxDISi2_ CAT-1: List of disturbances in accelerometer data CDF .cdf
ACCx_FMi2_ CAT-1: Time series of non-gravitational accelerations from force models CDF .cdf
Table 1: Intermediate Level 2 products

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Final Level 2 products

Science Objective Product Name Description Format Extension
All, needed for L1b Processing" MSW_EUL_2C CAT-1: Euler angles describing transformation from STR-CRF to VFM frame for satellites A, B, and C ASCII listing .txt
MSW_EUL_2D CAT-1: Euler angles describing transformation from STR-CRF to VFM frame for satellites A, B, and C ASCII listing .txt
MSW_VAL_2C CAT-1: Validation report about Euler angles PDF .pdf
MSW_VAL_2D CAT-1: Validation report about Euler angles PDF .pdf
MSW_VAL_2_ CAT-1: Validation report about Euler angles PDF .pdf
MSW_EUL_2F CAT-1: Euler angles describing transformation from STR-CRF to VFM frame for satellites A, B, and C ASCII listing .txt
O1: Core Field MCO_SHA_2C CAT-1: Spherical harmonic model of the main (core) field and its temporal variation ASCII listing (SHC) .shc
MCO_SHA_2D CAT-1: Spherical harmonic model of the main (core) field and its temporal variation ASCII listing (SHC) .shc
MCO_VAL_2C CAT-1: Validation report on core magnetic field PDF .pdf
MCO_VAL_2D CAT-1: Validation report on core magnetic field PDF .pdf
MCO_VAL_2_ CAT-1: Validation report on core magnetic field PDF .pdf
MCO_SHA_2F CAT-1: Spherical harmonic model of the main (core) field and its temporal variation ASCII listing (SHC) .shc
O2: Lithospheric Field MLI_SHA_2C CAT-1: Spherical harmonic model of the lithospheric field ASCII listing (SHC) .shc
MLI_SHA_2D CAT-1: Spherical harmonic model of the lithospheric field ASCII listing (SHC) .shc
MLI_SHA_2E CAT-1: Extended spherical harmonic model of the lithospheric field ASCII listing (SHC) .shc
MLI_VAL_2C CAT-1: Validation report on lithospheric field PDF .pdf
MLI_VAL_2D CAT-1: Validation report on lithospheric field PDF .pdf
MLI_VAL_2E CAT-1: Validation report on lithospheric field PDF .pdf
MLI_VAL_2_ CAT-1: Validation report on lithospheric field PDF .pdf
O3: Mantle Conductivity MIN_1DM_2_ CAT-1: 1D model of mantle conductivity ASCII listing .txt
MIN_3DM_2a CAT-1: 3D model of mantle conductivity (frequency domain) ASCII listing .txt
MIN_3DM_2b CAT-1: 3D model of mantle conductivity (time domain) ASCII listing .txt
MCR_1DM_2_ CAT-1: 1D C-response maps ASCII listing .txt
MCR_3DM_2_ CAT-1: 3D C-response maps ASCII listing .txt
MI1_VAL_2_ CAT-1: Validation report on 1D mantle conductivity PDF .pdf
MI3_VAL_2_ CAT-1: Validation report on 3D mantle conductivity PDF .pdf
MC1_VAL_2_ CAT-1: Validation report on 1D C-response PDF .pdf
MC3_VAL_2_ CAT-1: Validation report on 3D C-response PDF .pdf
O4: External Current Systems MMA_SHA_2C CAT-1: Spherical harmonic model of the large-scale magnetospheric field and its Earth-induced counterpart CDF .cdf
MMA_VAL_2C CAT-1: Validation report magnetospheric magnetic model PDF .pdf
MMA_SHA_2F CAT-1: Spherical harmonic model of the large-scale magnetospheric field and its Earth-induced counterpart CDF .cdf
MIO_SHA_2C CAT-1: Spherical harmonic model of the daily geomagnetic variation at middle latitudes (Sq and low latitudes (EEJ) ASCII listing .txt
MIO_SHA_2D CAT-1: Spherical harmonic model of the daily geomagnetic variation at middle latitudes (Sq and low latitudes (EEJ) ASCII listing .txt
MIO_VAL_2C CAT-1: Validation report on ionospheric magnetic model PDF .pdf
MIO_VAL_2D CAT-1: Validation report on ionospheric magnetic model PDF .pdf
MIO_VAL_2_ CAT-1: Validation report on ionospheric magnetic model PDF .pdf
IBIxTMS_2F CAT-2: Ionospheric bubble index CDF .cdf
TECxTMS_2F CAT-2: Time series of the ionospheric total electron content CDF .cdf
FAC_TMS_2F CAT-2: Time series of field-aligned currents CDF .cdf
FACxTMS_2F CAT-2: Time series of field-aligned currents CDF .cdf
EEFxTMS_2F CAT-2: Equatorial Electric Field CDF .cdf
Precise Orbit Determination SP3xCOM_2_ CAT-1: time series of position and velocity of the center of mass of each satellite (reduced-dynamic POD) ASCII listing (SP3) .sp3
SP3xKIN_2_ CAT-1: time series of position of the center of mass of each satellite (kinematic POD) ASCII listing (SP3) .sp3
SP3xVAL_2_ CAT-1: Validation report for SP3xCOM_2_ PDF .pdf
ACCxPOD_2_ CAT-1: Time series of non-gravitational accelerations estimated by POD CDF .cdf
Accelerometry ACCxCAL_2_ CAT-1: Corrected and calibrated accelerometer observations CDF .cdf
ACCxVAL_2_ CAT-1: Validation report for ACCxCAL_2_ PDF .pdf
O5: Magnetic Forcing of the Upper Atmosphere ACCx_AE_2_ CAT-1: Time series of calibrated and pre-processed accelerometer observations and of aerodynamic accelerations from Satellite x. (x=A,B or C) CDF .cdf
DNSxPOD_2_ CAT-1: time series of neutral thermospheric density from precise orbit determination data only CDF .cdf
DNSxWND_2_ CAT-1: time series of neutral thermospheric density and wind speed CDF .cdf
TDWxVAL_2_ CAT-1: Validation report for DNSxWND_2_ PDF .pdf
DNSxVAL_2_ CAT-1: Validation report for DNSxVAL_2_ PDF .pdf
Quick Look Reports MAG_QL__2_ Quick Look of magnetic field products MAGx_LR_1B PDF .pdf
EFI_QL__2_ Quick Look of EFIx_PL_1B PDF .pdf
Table 2: Final Level 2 products

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Auxiliary data and model

Product Name Description Format Extension
AUX_KP__2_ Planetary index of geomagnetic activity ASCII listing .DBL
AUX_DST_2_ Equivalent equatorial magnetic disturbances index ASCII listing .DBL
AUX_F10_2_ Index of daily solar radio flux ASCII listing .DBL
AUX_IMF_2_ Interplanetary magnetic field, 3-componenet magnetic field, solar wind density and velocity CDF .DBL
AUX_KP__2F Planetary index of geomagnetic activity ASCII listing .DBL
AUX_DST_2F Equivalent equatorial magnetic disturbances index ASCII listing .DBL
AUX_F10_2F Index of daily solar radio flux ASCII listing .DBL
AUX_IMF_2F Interplanetary magnetic field, 3-componenet magnetic field ASCII listing .DBL
AUX_SWV_2F Solar wind density and velocity ASCII listing .DBL
AUX_IRZ_2F 12 month smoothed sunspot number ASCII listing .DBL
AUX_APX_2F Apex magnetic coordinates* ASCII listing .DBL
AUX_GPSEPH GPS ephemeris* ASCII listing (SP3) .DBL
AUX_USLEAP Leap second information* ASCII listing .DBL
AUX_DCB_2F GPS satellite differential code biases ASCII listing .DBL
AUX_OBS_2_ Hourly Geomagnetic observatory data; 3-component magnetic field at INTERMAGNET and other magnetic observatories ASCII listing .DBL
AUX_OBSM2_ 1 minute geomagnetic observatory data; 3-component magnetic field at INTERMAGNET and other magnetic observatories ASCII listing .DBL
AUX_OBSS2_ 1 second geomagnetic observatory data; 3-component magnetic field at INTERMAGNET and other magnetic observatories ASCII listing .DBL
AUX_IGR_2_ IGRF (International Geomagnetic Reference Field) latest generation, model of the Earth's core magnetic field. ASCII listing (SHC) .DBL
AUX_COR_2_ Model for the core magnetic field ASCII listing (SHC) .DBL
AUX_LIT_2_ Model for the lithospheric magnetic field ASCII listing (SHC) .DBL
AUX_IGR_2F IGRF (International Geomagnetic Reference Field) latest generation, model of the Earth's core magnetic field. ASCII listing (SHC) .DBL
AUX_COR_2F Model for the core magnetic field ASCII listing (SHC) .DBL
AUX_LIT_2F Model for the lithospheric magnetic field ASCII listing (SHC) .DBL
AUX_PMF_2F Magnetospheric model ASCII listing .DBL
AUX_PSM_2F Coefficients to transform from Solar Magnetic (SM) to geographic coordinates for computing the external magnetic field ASCII listing .DBL
AUX_PGM_2F Coefficients to transform from Geocentric Solar Magnetospheric (GSM) to geographic coordinates for computing the external magnetic field ASCII listing .DBL
AUX_MTI_2_ Model of magnetic signals of major tidal constituents ASCII listing .DBL
AUX_MCM_2_ A priory radially-symmetric (1D) model of mantle conductivity ASCII listing .DBL
AUX_OCM_2_ 2D model of surface conductance ASCII listing .DBL
*used internally by operational processor, product is specified in [AD-16].
Table 3: Auxiliary data and model

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Euler Angles

Intermediate Level 2 Candidate Products

Product identifier MSW_EULi2C
Definition 3 sets of Euler angles, one set for each satellite
Input Data MAGx_LR_1R, AUX_DST_2_, AUX_KP__2_, AUX_F10_2_, Q3D_CI_i2_
Input Time Span All available quiet time observations from the mission
Spatial representation N/A
Time representation time series (snapshots)
Units Degree
Resolution 10-6
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfit provided in validation report
Data volume ~1 kB
Data format ASCII listing (section 4.3.4.1 of [AD-15])
Output Data For each satellite A, B, and C: Euler angles, type 1-2-3
Output time span As input
Update rate First after 1 year, updated every year
Latency 1.5 months
Notes  

 

Product identifier MSW_VALi2C
Definition Intermediate validation report for Euler angle determination from CI
Input Data MSW_EULi2C
Data volume < 1 MB
Data format PDF format
Output Data PDF file
Latency Same as for MSW_EULi2C
Notes  

 

Product identifier MSW_EULi2D
Definition 3 sets of Euler angles, one set for each satellite.
Input Data MAGx_LR_1B (x=[A,B,C]),

AUX_IGR_2_, AUX_COR_2_, AUX_LIT_2_, AUX_DST_2_, AUX_KP__2_, AUX_IMF_2_ ;
optional: MMA_SHAi2C, MMA_SHA_2F, MIN_1DMi2_

Input Time Span 1 year to full mission, but limited to quiet periods passing the selection
Spatial representation N/A
Time representation Time series (snapshots) for the three Euler Angle sets, he time is given in MJD 2000.0 midnight
Units Degree for Euler Angles, Days, Fraction for leading MJD
Resolution 10-6 for the Euler Angles, 0.01for MJD
Uncertainty See notes in this table, otherwise refer to product quality report
Quality indicator e.g. RMS error or histograms in product quality report
Data volume ~1 kB
Data format ASCII table (section 4.3.4 of [AD-15])
Output Data For each satellite A, B, and C: three Euler angles, type 1-2-3 preceded by time in MJD
Output time span Same as input, resolution N/A (adaptive to data)
Update rate First after 1 year, updated every year.
Latency 6 weeks
Notes See also Notes in MSW_VAL_2D.

If possible, results of three different segmentation windows sizes (i.e. for 5, 10 and 20 days -- the decision to apply for three window sizes and the definitive sizes will depend on data quality) will be, together with the scatter of the time series, used to assess stability and validity of the Euler Angles.

 

Product identifier MSW_VALi2D
Definition Intermediate validation report for Euler angle determination from Dedicated Core
Input Data MSW_EULi2D
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as for MSW_EULi2D
Latency Same as for MSW_EULi2D
Notes If possible, results of three different segmentation windows sizes (i.e. for 5, 10 and 20 days, the decision to apply for three window sizes and the definitive sizes will depend on data quality) will be, together with the scatter of the time series internally and in conjunction with previous results, used to assess stability and validity of the Euler Angles.

Final Level 2 Products

Product identifier MSW_VAL_2C
Definition Validation report for Euler angle determination
Input Data MSW_EULi2C, MSW_VALi2C
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as MSW_EUL_2C
Latency 1 month
Notes  

 

Product identifier MSW_VAL_2D
Definition Validation report for Euler angle determination
Input Data MSW_EULi2D, MSW_VALi2D
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as MSW_EUL_2D
Latency 1 month
Notes If possible, results of three different segmentation windows sizes (i.e. for 5, 10 and 20 days, the decision to apply for three window sizes and the definitive sizes will depend on data quality) will be, together with the scatter of the time series internally and in conjunction with previous results, used to assess stability and validity of the Euler Angles.

Product identifier MSW_VAL_2_
Definition Comparison validation report for Euler angle determinations
Input Data MSW_EULi2C, MSW_EULi2D, MSW_VAL_2C, MSW_VAL_2D
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Each time both, MSW_EUL_2C and MSW_EUL_2D have been released
Latency 1 month
Notes  

Product identifier MSW_EUL_2C
Definition 3 sets of Euler angles, one set for each satellite
Input Data MSW_EULi2C, MSW_VAL_2_
Input Time Span As for MSW_EULi2C
Spatial representation As for MSW_EULi2C
Time representation As for MSW_EULi2C
Units As for MSW_EULi2C
Resolution As for MSW_EULi2C
Uncertainty As for MSW_EULi2C
Quality indicator As for MSW_EULi2C
Data volume As for MSW_EULi2C
Data format As for MSW_EULi2C
Output Data As for MSW_EULi2C
Output time span As for MSW_EULi2C
Update rate As for MSW_EULi2C
Latency As for MSW_EULi2C
Notes  

 

Product identifier MSW_EUL_2D
Definition 3 sets of Euler angles, one set for each satellite.
Input Data MSW_EULi2D, MSW_VAL_2_
Input Time Span Same as for MSW_EULi2D
Spatial representation Same as for MSW_EULi2D
Time representation Same as for MSW_EULi2D
Units Same as for MSW_EULi2D
Precision Same as for MSW_EULi2D
Quality indicator Same as for MSW_EULi2D
Data volume Same as for MSW_EULi2D
Data format Same as for MSW_EULi2D
Output Data Same as for MSW_EULi2D
Output time span and resolution Same as for MSW_EULi2D
Update rate Same as for MSW_EULi2D
Latency Same as for MSW_EULi2D
Notes  

 

Product identifier MSW_EUL_2F
Definition 3 sets of Euler angles, one set for each satellite.
Input Data MAGx_LR_1B(x=[A,B,C]),

AUX_IGR_2_, AUX_COR_2_, AUX_LIT_2_, AUX_DST_2_, AUX_KP__2_, AUX_IMF_2_ ;
optional: MMA_SHAi2C, MMA_SHA_2F, MIN_1DMi2_

Input Time Span At least 4 months
Spatial representation N/A
Time representation Time series (snapshots) for the three Euler Angle sets, he time is given in MJD 2000.0 midnight
Units Degree for Euler Angles, Days. Fraction for leading MJD
Resolution 10-6 for the Euler Angles, 0.01 for MJD
Uncertainty See Notes in this table, otherwise refer to product quality report
Quality indicator E.g. RMS error or histograms provided in the product quality report.
Data volume ~1 kB
Data format ASCII table (section 4.3.4 of [AD-15])
Output Data For each satellite A, B, and C: Euler angles, type 1-2-3 preceded by time in MJD
Output time span Same as input, resolution N/A (adaptive to data)
Update rate 3 months
Latency 2 weeks
Notes See also Notes in MSW_VAL_2D.

If possible, results of three different segmentation windows sizes (i.e. for 5, 10 and 20 days -- the decision to apply for three window sizes and the definitive sizes will depend on data quality) will be, together with the scatter of the time series internally and in conjunction with previous results, used to assess stability and validity of the Euler Angles.

Core Field Models

Intermediate Level 2 Candidate Products

Product identifier MCO_SHAi2C
Definition Spherical harmonic model of the main (core) field and its temporal variation
Input Data Same as MSW_EULi2C
Input Time Span Same as MSW_EULi2C
Spatial representation Spherical Harmonics up to degree 18
Time representation Snapshot models, based on order 5 splines with 6 months knots spacing
Units nT
Resolution 1 pT
Uncertainty Refer to quality report
Quality indicator Statistics of data misfit provided in validation report
Data volume ~10 kB
Data format ASCII table (SHC, see section 4.3.1 of [AD-15])
Output Data Gauss coefficients
Output time span As input time span but with some extrapolations

 

 

Update rate Same as MSW_EULi2C
Latency Same as MSW_EULi2C
Notes  

Product identifier MCO_VALi2C
Definition Intermediate validation report for core field from CI
Input Data MCO_SHAi2C
Data volume < 1 MB
Data format PDF format
Output Data PDF file
Update rate Same as for MCO_SHAi2C
Latency Same as for MCO_SHAi2C
Notes  

 

Product identifier MCO_SHAi2D
Definition Spherical harmonic model of the core field and its temporal variation
Input Data MAGx_LR_1B]), (x=[A,B,C]),

AUX_IGR_2_, AUX_COR_2_, AUX_LIT_2_, AUX_DST_2_, AUX_KP__2_, AUX_IMF_2_ ;
optional: MMA_SHAi2C, MMA_SHA_2F, MIN_1DMi2_

Input Time Span Nominal minimum of 1 year up to the full Swarm data span.
Spatial representation Spherical Harmonics up to degree 18
Time representation Snapshot models (corresponding to 1/2 year knot separation and order 6 splines)
Units nT
Resolution 1 pT
Uncertainty Refer to quality report
Quality indicator Statistics of data misfit, power spectra etc. provided in validation report
Data volume ~10 kB
Data format ASCII table (SHC, see section 4.3.1 of [AD-15])
Output data Gauss coefficients
Output time span Time span same as for input.
Update rate 1 per year
Latency 6 weeks
Notes Latency may be increased if data quality has to be investigated.

 

Product identifier MCO_VALi2D
Definition Intermediate validation report for dedicated core field
Input Data MCO_SHAi2C
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as for MCO_SHAi2D
Latency Same as for MCO_SHAi2D
Notes  

Final Level 2 Products

Product identifier MCO_VAL_2C
Definition Validation report for core field model from CI chain
Input Data MCO_SHAiC, MCO_VALi2C, AUX_OBS_2_, AUX_IGR_2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as for MCO_SHA_2C
Latency 1 month
Notes  

 

Product identifier MCO_VAL_2D
Definition Validation report for core field model from dedicated chain
Input Data MCO_SHAi2D, MCO_VALi2D, AUX_OBS_2_, AUX_IGR_2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as for MCO_SHA_2D
Latency 1 month
Notes  

 

Product identifier MCO_VAL_2_
Definition Comparative validation report for core field models
Input Data MCO_SHA_2C, MCO_SHA_2D, MCO_VAL_2C, MCO_VAL_2D, AUX_OBS_2_, AUX_IGR_2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Each time both, MCO_SHA_2C and MCO_SHA_2D have been released
Latency 1 month
Notes  

 

Product identifier MCO_SHA_2C
Definition Spherical harmonic model of the main (core) field and its temporal variation
Input Data MCO_SHAi2C, MCO_VAL_2_
Input Time Span Same as for MCO_SHAi2C
Spatial representation Same as for MCO_SHAi2C
Time representation Same as for MCO_SHAi2C
Units Same as for MCO_SHAi2C
Resolution Same as for MCO_SHAi2C
Uncertainty Same as for MCO_SHAi2C
Quality indicator Same as for MCO_SHAi2C
Data volume Same as for MCO_SHAi2C
Data format Same as for MCO_SHAi2C
Output Data Same as for MCO_SHAi2C
Output time span Same as for MCO_SHAi2C
Update rate Same as for MCO_SHAi2C
Latency Same as for MCO_SHAi2C
Notes  

 

Product identifier MCO_SHA_2D
Definition Spherical harmonic model of the core field
Input Data MCO_SHAi2D, MCO_VAL_2_
Input Time Span As for MCO_SHAi2D
Spatial representation As for MCO_SHAi2D
Time representation As for MCO_SHAi2D
Units As for MCO_SHAi2D
Resolution As for MCO_SHAi2D
Uncertainty As for MCO_SHAi2D
Quality indicator As for MCO_SHAi2D
Data volume As for MCO_SHAi2D'
Data format As for MCO_SHAi2D
Output Data As for MCO_SHAi2D
Output time span As for MCO_SHAi2D
Update rate As for MCO_SHAi2D
Latency As for MCO_SHAi2D
Notes The model accuracy strongly depends on the LT offset between satellite C and the A,B satellite pair.

 

Product identifier MCO_SHA_2F
Definition Spherical harmonic model of the main (core) field and its temporal variation
Input Data MAGx_LR_1B (x=[A,B,C]),

AUX_IGR_2_, AUX_COR_2_, AUX_LIT_2_, AUX_DST_2_, AUX_KP__2_, AUX_IMF_2_ ;
optional: MMA_SHAi2C, MMA_SHA_2F, MIN_1DMi2_

Input Time Span Minimum of 4 months
Spatial representation Spherical Harmonics up to degree 18
Time representation Snapshot models
Units nT
Resolution 1 pT
Uncertainty Refere to quality report
Quality indicator Statistics of data misfit, power spectra etc. provided in validation report
Data volume ~10 kB
Data format ASCII table (SHC, see section 4.3.4 of [AD-15])
Output Data Gauss coefficients
Output time span and resolution Time span: Minimum 4 months


Time resolution: corresponding to 3 month knots separation and order 2 splines

Update rate First after 4 month, afterwards update is three months (if granted by data quality).
Latency 1 week
Notes Assumed updated rate is three month

Lithospheric Field Models

Intermediate Level 2 Candidate Products

Product identifier MLI_SHAi2C
Definition Spherical harmonic model of the lithospheric field
Input Data Same as MSW_EULi2C
Input Time Span Same as MSW_EULi2C
Spatial representation Spherical Harmonics from degree 16 to 150
Time representation Snapshot
Units nT
Resolution 1 pT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfits provided in validation report
Data volume ~0.5 MB
Data format ASCII table (SHC, see section 4.3.1 of [AD-15])
Output Data Gauss coefficients
Output time span N/A (lithospheric field is considered constant over the analysed time range)
Update rate Same as MSW_EULi2C
Latency Same as MSW_EULi2C
Notes  

 

Product identifier MLI_VALi2C
Definition Intermediate validation report for litospheric field from CI
Input Data MLI_SHAi2C
Data volume < 1 MB
Data format PDF format
Output Data PDF file
Update rate Same as for MLI_SHAi2C
Latency Same as for MLI_SHAi2C
Notes  

 

Product identifier MLI_SHAi2D
Definition Spherical harmonic model of the lithospheric field
Input Data MAGx_LR_1B, AUX_KP__2_, AUX_DST_2_, AUX_F10_2_, AUX_IMF_2_, AUX_MTI_2_, AUX_LIT_2_, AUX_COR_2_, IBIxTMS_2_, MCO_SHAi2D, MCO_SHA_2F, MMA_SHAi2C, MMA_SHA_2F, MCO_SHAi2C, MIO_SHAi2C, MIO_SHAi2D, MSW_EULi2C, MSW_EULi2D
Input Time Span One to four years of full Swarm data set.
Spatial representation Spherical Harmonics from degree 16 to 150
Time representation Snapshot
Units nT
Resolution 1 pT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfits provided in validation report
Data volume ~0.5 MB
Data format ASCII table (SHC, see section 4.3.1 of [AD-15])
Output Data Gauss coefficients
Output time span N/A (lithospheric field is considered constant over the analysed time range)
Update rate One model every year
Latency One month
Notes  

 

Product identifier MLI_VALi2D
Definition Intermediate validation report for dedicated litospheric field
Input Data MLI_SHAi2D
Data volume < 100 Mb per report
Data format PDF format
Output Data PDF file
Update rate Same as for MLI_SHAi2D
Latency Same as for MLI_SHAi2D
Notes  

 

Product identifier MLI_SHAi2E
Definition Map of the lithospheric field from the Revised Spherical Cap Harmonic analysis (R-SCHA) Dedicated Lithospheric Inversion, expressed in terms of high degree Spherical Harmonics
Input Data MAGx_LR_1B, AUX_KP__2_, AUX_DST_2_, AUX_F10_2_, AUX_IMF_2_, AUX_MTI_2_, AUX_LIT_2_, AUX_COR_2_, IBIxTMS_2_, MCO_SHAi2D, MCO_SHA_2F, MMA_SHAi2C, MMA_SHA_2F, MCO_SHAi2C, MIO_SHAi2C, MIO_SHAi2D, MSW_EULi2C, MSW_EULi2D
Input Time Span Same as MLI_SHAi2D
Spatial representation Spherical harmonics from degree 16 to 200
Time representation Snapshot
Units nT
Resolution 1 pT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfits provided in validation report
Data volume ~3MB
Data format ASCII table (SHC, see section 4.3.1 of [AD-15])
Output Data Gauss coefficients
Output time span N/A (lithospheric field is considered constant over the analysed time range)
Update rate One model every year
Latency One month
Notes The product has the same format as the other lithospheric field models, but at a higher SH degree to be used for mapping purpose only. SH Gauss coefficients are here a mean to store the map, but the product itself is a map. The map should not be computed at altitudes lower than the minimum altitude of Swarm measurements

 

Product identifier MLI_VALi2E
Definition Intermediate validation report for dedicated litospheric field with revised spherical cap harmonics
Input Data MLI_SHAi2E
Data volume < 100 Mb per report
Data format PDF format
Output Data PDF file
Update rate Same as for MLI_SHAi2E
Latency Same as for MLI_SHAi2E
Notes  

Mantle Conductivity

Intermediate Level 2 Products

Product identifier Q3D_CI_i2_
Definition Q-matrix of 3-D mantle conductivity model including oceans
Input Data AUX_OCM_2_, AUX_MCM_2, MIN_1DMi2_, MIN_3DMi2a, MIN_3DMi2b
Input Time Span N/A
Spatial representation Spherical harmonic (SH) expansion in dipolar coordinates.
Time representation Four time harmonics (at periods of 24, 12, 8 and 6 hours)
Units dimensionless
Resolution 10-5
Uncertainty N/A
Quality indicator N/A
Data volume 500 Mb
Data format The files are in ASCII format with LF control character used for newline (unix style), and arbitrary number of spaces used as variable separator in a line. General structure of the files is as follows:

# Arbitrary number of comment lines starting with # sign

N_periods N_max M_max

<block_1>
<block_2>
<block_3>
...
<block_N_periods>

where

N_periods is a number of periods N_max is a maximum degree of spherical harmonic expansion (SHE) of the external field M_max is a maximum order of SHE of the external field

Each <block_k> block consists of:

T_k
# Comment line with degrees and orders of SHE of internal field

Then matrix(array) of dimension [M_max*(M_max + 2) +( N_max-M_max)*(2*M_max+1)]x[N_max*(N_max+2)] follows which columns are:

<Columns 1 - 2>: degree and order of SHE of external field
<Columns 3 – N_max*(N_max+2)+1>: elements of Q-matrix

where T_k is the k-th period in days.

Output Data Transfer function connecting induced and inducing SH expansion coefficients
Output time span N/A
Update rate First version 1 year after launch updated when required
Latency N/A
Notes  

 

Product identifier MIN_1DMi2_
Definition 1-D model of mantle conductivity
Input Data MMA_SHAi2C, AUX_OCM_2_, AUX_MCM_2
Input Time Span 2 years
Spatial representation Conductivity distribution with respect to depth (1-D layered model of the Earth)
Time representation N/A
Units Kilometers (for layer radii), Siemens per meter (for conductivities)
Resolution N/A
Uncertainty Refer to product quality report
Quality indicator N/A
Data volume A few Kb
Data format ASCII listing (section 4.3.4.2 of [AD-15])
Output Data Conductivities within the layer, and radii of the top of the layer
Output time span N/A
Update rate First version after 2 years, update every year
Latency 1 months
Notes This 1-D model is foreseen as the output of the 1-D frequency domain inversion

 

Product identifier MI1_VALi2_
Definition Intermediate validation report for 1-D model of mantle conductivity
Input Data MIN_1DMi2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as for MIN_1DMi2_
Latency Same as for MIN_1DMi2_
Notes  

 

Product identifier MIN_3DMi2a
Definition 3-D model of mantle conductivity (frequency domain)
Input Data MMA_SHAi2C, AUX_OCM_2_, AUX_MCM_2
Input Time Span > 2 years
Spatial representation 3-D grid, laterally regular, radially irregular
Time representation N/A
Units Kilometers (for layer radii), Siemens per meter (for conductivities)
Resolution N/A
Uncertainty Refer to product quality report
Quality indicator N/A
Data volume A few Mb
Data format ASCII listing (section 4.3.4.2 of [AD-15])
Output Data Conductivities in cells of a 3-D grid
Output time span N/A
Update rate First version after 2 years, updates every year
Latency 4 months
Notes This 3-D model is foreseen as the output of the 3-D frequency domain inversion

 

Product identifier MIN_3DMi2b
Definition 3-D model of mantle conductivity (time domain)
Input Data MMA_SHAi2C, AUX_OCM_2_, AUX_MCM_2
Input Time Span > 2 years
Spatial representation 3-D grid, laterally regular, radially irregular
Time representation N/A
Units Kilometers (for layer radii), Siemens per meter (for conductivities)
Resolution N/A
Uncertainty Refer to product quality report
Quality indicator N/A
Data volume A few Mb
Data format ASCII listing (section 4.3.4.2 of [AD-15])
Output Data Conductivities in cells of a 3-D grid
Output time span N/A
Update rate First version after 2 years, updates every year
Latency 4 months
Notes This 3-D model is foreseen as the output of the 3-D time domain inversion

 

Product identifier MI3_VALi2_
Definition Intermediate validation report for 3-D model of mantle conductivity candidate a and b
Input Data MIN_3DMi2a, MIN_3DMi2b
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as for MIN_3DMi2a
Latency Same as for MIN_3DMi2a
Notes  

 

Product identifier MCR_1DMi2_
Definition Global 1D C-responses
Input Data MMA_SHAi2C, AUX_OCM_2_, AUX_MCM_2
Input Time Span 2 year
Spatial representation N/A
Time representation N/A
Units km
Resolution N/A
Uncertainty For periods between 4-15 days the relative error should be less than 30 %
Quality indicator Uncertainties and squared coherencies coming from signal processing
Data volume A few Kb
Data format ASCII listing (section 4.3.4.2 of [AD-15])
Output Data C-responses (real and imaginary parts), their uncertainties and squared coherences on a set of periods
Output time span and resolution N/A
Update rate Same as MIN_1DMi2_
Latency Same as MIN_1DMi2_
Notes These responses are foreseen as the by-product of the 1-D frequency domain inversion

 

Product identifier MC1_VALi2_
Definition Intermediate validation report for 1-D maps of C-responses
Input Data MCR_1DMi2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as MCR_1DMi2_
Latency Same as MCR_1DMi2_
Notes  

 

Product identifier MCR_3DMi2_
Definition 3-D maps of C-responses
Input Data MMA_SHAi2C, AUX_OCM_2_, AUX_MCM_2_
Input Time Span 4 years
Spatial representation 2-D (lon, lat) grid
Time representation N/A
Units km
Resolution N/A
Uncertainty For periods between 4-15 days the relative error should be less than 30 %
Quality indicator Uncertainties and squared coherencies coming from signal processing
Data volume A few Mb
Data format ASCII listing (section 4.3.4.2 of [AD-15])
Output Data C-responses (real and imaginary parts), their uncertainties and squared coherences on 2-D (lon, lat) grid on a set of periods
Output time span and resolution N/A
Update rate Same as MIN_3DMi2a
Latency Same as MIN_3DMi2a
Notes These responses are foreseen as the by-product of the 3-D frequency domain inversion

 

Product identifier MC3_VALi2_
Definition Intermediate validation report for 3-D maps of C-responses
Input Data MCR_3DMi2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as MCR_3DMi2_
Latency Same as MCR_3DMi2_
Notes  

Final Level 2 Products

Product identifier MI1_VAL_2_
Definition Validation report for 1D mantle conductivity
Input Data MIN_1DMi2_, MI1_VALi2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate As for MIN_1DM_2_,
Latency 1 month
Notes  

 

Product identifier MI3_VAL_2_
Definition Validation report for 3D mantle conductivity , candidate product a and b and intercomparison between a and b
Input Data MIN_3DMi2a, MIN_3DMi2b, MI3_VALi2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Each time when both, MIN_3DM_2a and MIN_3DM_2b are released
Latency 1 month
Notes  

 

Product identifier MC1_VAL_2_
Definition Validation report for 1D C-response
Input Data MCR_1DMi2_, MC1_VALi2_
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate As for MCR_1DM_2_
Latency 1 month
Notes  

 

Product identifier MC3_VAL_2_
Definition Validation report for 3D C-response
Input Data MCR_3DMi2_, MC3_VALi2
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate As for MCR_3DM_2_
Latency 1 month
Notes  

 

Product identifier MIN_1DM_2_
Definition 1-D model of mantle conductivity
Input Data MIN_1DMi2_, MC1_VAL_2_
Input Time Span As for MIN_1DMi2_
Spatial representation As for MIN_1DMi2_
Time representation As for MIN_1DMi2_
Units As for MIN_1DMi2_
Resolution As for MIN_1DMi2_
Uncertainty As for MIN_1DMi2_
Quality indicator As for MIN_1DMi2_
Data volume As for MIN_1DMi2_
Data format As for MIN_1DMi2_
Output Data As for MIN_1DMi2_
Output time span As for MIN_1DMi2_
Update rate As for MIN_1DMi2_
Latency As for MIN_1DMi2_
Notes As for MIN_1DMi2_

 

Product identifier MIN_3DM_2a
Definition 3-D model of mantle conductivity (frequency domain)
Input Data MIN_3DMi2a, MC3_VAL_2_
Input Time Span As for MIN_3DMi2a
Spatial representation As for MIN_3DMi2a
Time representation As for MIN_3DMi2a
Units As for MIN_3DMi2a
Resolution As for MIN_3DMi2a
Uncertainty As for MIN_3DMi2a
Quality indicator As for MIN_3DMi2a
Data volume As for MIN_3DMi2a
Data format As for MIN_3DMi2a
Output Data As for MIN_3DMi2a
Output time span As for MIN_3DMi2a
Update rate As for MIN_3DMi2a
Latency As for MIN_3DMi2a
Notes As for MIN_3DMi2a

 

Product identifier MIN_3DM_2b
Definition 3-D model of mantle conductivity (frequency domain)
Input Data MIN_3DMi2b, MC3_VAL_2_
Input Time Span As for MIN_3DMi2b
Spatial representation As for MIN_3DMi2b
Time representation As for MIN_3DMi2b
Units As for MIN_3DMi2b
Resolution As for MIN_3DMi2b
Uncertainty As for MIN_1DMi2b
Quality indicator As for MIN_3DMi2b
Data volume As for MIN_3DMi2b
Data format As for MIN_3DMi2b
Output Data As for MIN_3DMi2b
Output time span As for MIN_3DMi2b
Update rate As for MIN_3DMi2b
Latency As for MIN_3DMi2b
Notes As for MIN_3DMi2b

 

Product identifier MCR_1DM_2_
Definition Global 1D C-responses
Input Data MCR_1DMi2_, MC1_VAL_2_
Input Time Span As for MCR_1DMi2_
Spatial representation As for MCR_1DMi2_
Time representation As for MCR_1DMi2_
Units As for MCR_1DMi2_
Resolution As for MIN_1DMi2_
Uncertainty As for MIN_1DMi2_
Quality indicator As for MCR_1DMi2_
Data volume As for MCR_1DMi2_
Data format As for MCR_1DMi2_
Output Data As for MCR_1DMi2_
Output time span and resolution As for MCR_1DMi2_
Update rate As for MCR_1DMi2_
Latency As for MCR_1DMi2_
Notes  

 

Product identifier MCR_3DM_2_
Definition 2-D maps of C-responses
Input Data MCR_3DMi2_, MC3_VAL_2_
Input Time Span As for MCR_3DMi2_
Spatial representation As for MCR_3DMi2_
Time representation As for MCR_3DMi2_
Units As for MCR_3DMi2_
Resolution As for MCR_3DMi2_
Uncertainty As for MCR_3DMi2_
Quality indicator As for MCR_3DMi2_
Data volume As for MCR_3DMi2_
Data format As for MCR_3DMi2_
Output Data As for MCR_3DMi2_
Output time span As for MCR_3DMi2_
Update rate As for MCR_3DMi2_
Latency As for MCR_3DMi2_
Notes  

 

External Field and Current Systems

Intermediate Level 2 Candidate Products

Product identifier MMA_SHAi2C
Definition Spherical harmonic representation of the large scale magnetospheric field and of its induced counterpart
Input Data Same as MSW_EULi2C
Input Time Span Same as MSW_EULi2C
Spatial representation Spherical Harmonics of degree and order at least 1 for the external field and of degree and order at least 5 for its Earth induced counterpart
Time representation Time series
Units nT
Resolution ≤ 1 pT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfit provided in the validation report
Data volume ~2 MB/year
Data format CDF variables

Various temporal resolutions may be employed for various external and internal coefficients, hence a number of CDF variable groups are used to store external (named "...qs_N") respectively internal (named "...gh_N") coefficients. Note: the temporal resolutions for the various groups of external and internal coefficients are usually not identical.

Name Type Dim Unit Contents
t_qs_1 CDF_EPOCH 1 ms Time instants of external Gauss coefficients q (cosine) and s (sine)
qs_1 CDF_DOUBLE 1 nT External Gauss coefficients q (cosine) and s (sine) in dipole frame corresponding to time instants t_qs_1
dqs_1 CDF_DOUBLE 1 nT Formal error estimate for qs_1
nm_qs_1 CDF_INT2 1 - First column: vector of spherical harmonic degrees of the coefficients qs_1.

 

Second column: vector of spherical harmonic orders. Nonnegative values denote coefficients q (cosine) while negative values denote coefficients s (sine)

t_qs_2 CDF_EPOCH 1 ms Time instants of external Gauss coefficients q (cosine) and s (sine)
qs_2 CDF_DOUBLE 2 nT External Gauss coefficients q (cosine) and s (sine) in dipole frame corresponding to time instants t_qs_2
dqs_2 CDF_DOUBLE 2 nT Formal error estimate for qs_2
nm_qs_2 CDF_INT2 2 - First column: vector of spherical harmonic degrees of the coefficients qs_2.

Second column: vector of spherical harmonic orders. Nonnegative values denote coefficients q (cosine) while negative values denote coefficients s (sine)

t_gh_1 CDF_EPOCH 1 ms Time instants of induced Gauss coefficients g (cosine) and h (sine)
gh_1 CDF_DOUBLE 1 nT Internal induced Gauss coefficients g (cosine) and h (sine) in dipole frame
dgh_1 CDF_DOUBLE 1 nT Formal error estimate for gh_1
nm_gh_1 CDF_INT2 1 - First column: vector of spherical harmonic degrees of the coefficients gh_1.

Second column: vector of spherical harmonic orders. Nonnegative values denote coefficients g (cosine) while negative values denote coefficients h (sine)

t_gh_2 CDF_EPOCH 1 ms Time instants of induced Gauss coefficients g (cosine) and h (sine)
gh_2 CDF_DOUBLE 2 nT Internal induced Gauss coefficients g (cosine) and h (sine) in dipole frame
dgh_2 CDF_DOUBLE 2 nT Formal error estimate for gh_2
nm_gh_2 CDF_INT2 2 - First column: vector of spherical harmonic degrees of the coefficients gh_2.

Second column: vector of spherical harmonic orders. Nonnegative values denote coefficients g (cosine) while negative values denote coefficients h (sine)

t_qual CDF_EPOCH 1 ms Time instants of quality information (rms, n_data, and q_flag).
rms CDF_DOUBLE 2 nT Root-mean-square difference between models and input data (after processing to subtract non-magnetospheric sources) in dipole frame, for the time instants indicated by t_qual

First column: RMS difference in radial direction. Second column: RMS difference in theta direction. Third column: RMS difference in phi direction.

n_data CDF_UINT2 2 - Number of data used at each time-instant from each satellite.

First column: Number of data from SWARM A. Second column: Number of data from SWARM B. Third column: Number of data from SWARM C.

Output Data Time series of external and induced SH coefficients in dipole coordinate frame; root-mean-square differences between (processed) input data and models; number of data from each satellite used for each model; quality flag.
Output time span Time span as input
Update rate Same as MSW_EULi2C
Latency Same as MSW_EULi2C
Notes  

 

Product identifier MMA_VALi2C
Definition Intermediate validation report for ionospheric fields from CI
Input Data MMA_SHAi2C
Data volume < 1 MB
Data format PDF format
Output Data PDF file
Update rate Same as MMA_SHAi2C
Latency Same as MMA_SHAi2C
Notes  

 

Product identifier MIO_SHAi2C
Definition Spherical harmonic representation of the daily geomagnetic variations at mid and low latitudes (Sq and EEJ) and of its induced counterpart
Input Data Same as MSW_EULi2C
Input Time Span Same as MSW_EULi2C
Spatial representation Spherical Harmonics up to degree 60 and order 12 in dipole coordinates
Time representation Fourier Series, seasonal and daily periodicity
Units nT
Resolution 1 pT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfit provided in the validation report
Data volume ~130 kB
Data format ASCII listing (section 4.3.4.3 of [AD-15])
Output Data Coefficients of SH model in dipole coordinates, with seasonal and diurnal periodicity
Output time span N/A
Update rate Same as MSW_EULi2C
Latency Same as MSW_EULi2C
Notes  

 

Product identifier MIO_VALi2C
Definition Intermediate validation report for ionospheric fields from CI
Input Data MIO_SHAi2C
Data volume < 1 MB
Data format PDF format
Output Data PDF file
Update rate Same as MIO_SHAi2C
Latency Same as MIO_SHAi2C
Notes  

 

Product identifier MIO_SHAi2D
Definition Spherical harmonic representation of the daily geomagnetic variations at mid and low latitudes (Sq and EEJ) and its induced counterpart
Input Data MAGx_LR_1B, AUX_KP__2_, AUX_DST_2_, AUX_F10_2_, AUX_IMF_2, AUX_COR_2_, AUX_OBS_2_, AUX_LIT_2_, AUX_IGR_2_, MCO_SHA_2F, MCO_SHAi2D, MLI_SHAi2D, MCO_SHAi2C, MLI_SHAi2C, MMA_SHAi2C, MMA_SHA_2F, Q3D_CI_i2_
Input Time Span 3 months to 1 year, to be confirmed and aligned to update rate
Spatial representation Spherical Harmonics up to degree 60 and order 12 in dipole coordinates
Time representation Fourier Series, seasonal and daily periodicity
Units nT
Resolution 1 fT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfits provided in the validation report
Data volume ~ 3.5 Mo'
Data format ASCII listing (section 4.3.4.3 of [AD-15])
Output Data Coefficients of SH model in dipole coordinates, with seasonal and diurnal periodicity
Output time span N/A
Update rate First after 6 months, 1 year, and update every year.
Latency 1.5 month
Notes  

 

Product identifier MIO_VALi2D
Definition Intermediate validation report for ionospheric fields from dedicated chain
Input Data MIO_SHAi2D
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Same as MIO_SHAi2D
Latency Same as MIO_SHAi2D
Notes  

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Minimize Final Level 2 products

Final Level 2 Products

MMA_VAL_2C
Product identifier MMA_VAL_2C
Definition Validation report for magnetospheric field model from CI chain
Input Data MMA_SHAi2C, MMA_SHA_2F, MMA_VALi2C
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate As for MMA_SHA_2C
Latency 1 month
Notes  

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MMA_SHA_2C
Product identifier MMA_SHA_2C
Definition Spherical harmonic representation of the large scale magnetospheric field and of its induced counterpart
Input Data MMA_SHAi2C, MMA_VAL_2_
Input Time Span As for MMA_SHAi2C
Spatial representation As for MMA_SHAi2C
Time representation As for MMA_SHAi2C
Units As for MMA_SHAi2C
Resolution As for MMA_SHAi2C
Uncertainty As for MMA_SHAi2C
Quality indicator As for MMA_SHAi2C
Data volume As for MMA_SHAi2C
Data format As for MMA_SHAi2C
Output Data As for MMA_SHAi2C
Output time span As for MMA_SHAi2C
Update rate As for MMA_SHAi2C
Latency As for MMA_SHAi2C
Notes  

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MMA_SHA_2F
Product identifier MMA_SHA_2F
Definition Spherical harmonic representation of the large scale magnetospheric field and its induced counterpart
Input Data MAGx_LR_1B, AUX_IGR_2_, AUX_COR_2_, MCO_SHA_2F, MCO_SHA_2C, MCO_SHA_2D, AUX_LIT_2_, MLI_SHA_2C, MIO_SHA_2C, AUX_F10_2_, AUX_IMF_2F, AUX_DST_2_, AUX_KP__2_, AUX_OBS_2_'
Input Time Span Full Swarm data set covering at least 30 days
Spatial representation Degree 1 spherical Harmonics for the external and internally induced fields
Time representation Snapshot values 1.5 hours apart.
Units See variable ‘Units' in ‘Data format', below.
Resolution See variable ‘Type' in ‘Data format', below.
Uncertainty Overall uncertainty will include contributions from uncertainties in the Input Data, which are not calculated here. Estimates of the uncertainty resulting from the modeling process after the Input Data has been processed can be obtained from the ‘rms' output variable.
Quality indicator Root-mean-square difference between model and (processed) input data; number of data used per model; quality flag.
Data volume ~5 MB/year
Data format CDF Variables

 

Name Type Dim Unit Contents
t_qs CDF_EPOCH 1 ms Time instants (CDFEPOCH) of external Gauss coefficients q (cosine) and s (sine)
qs_geo CDF_DOUBLE 2 nT External Gauss coefficients q (cosine) and s (sine) in Geographic frame
qs_sm CDF_DOUBLE 2 nT External Gauss coefficients q (cosine) and s (sine) in Solar Magnetic frame
nm_qs CDF_INT2 2 - First column: vector of spherical harmonic degrees of the coefficients qs_geo and qs_sm. Nonnegative values denote coefficients q (cosine) while negative values denote coefficients s (sine)

Second column: vector of spherical harmonic orders

t_gh CDF_EPOCH 1 ms Time instants (CDFEPOCH) of induced Gauss coefficients g (cosine) and h (sine)
gh_geo CDF_DOUBLE 2 nT Internal induced Gauss coefficients g (cosine) and h (sine) in Geographic frame
gh_sm CDF_DOUBLE 2 nT Internal induced Gauss coefficients g (cosine) and h (sine) in Solar Magnetic frame
nm_gh CDF_INT2 2 - First column: vector of spherical harmonic degrees of the coefficients gh_geo and gh_sm. Nonnegative values denote coefficients g (cosine) while negative values denote coefficients h (sine)

Second column: vector of spherical harmonic orders

t_qual CDF_EPOCH 1 ms Time instants (CDFEPOCH) of quality information (rms, n_data, and q_flag).
rms CDF_DOUBLE 2 nT Root-mean-square difference between models and input data (after processing to subtract non-magnetospheric sources) in geographic frame.

First column: RMS difference in radial direction. Second column: RMS difference in theta direction. Third column: RMS difference in phi direction.

n_data CDF_UINT2 2 - Number of data used at each time-instant from each satellite.

First column: Number of data from SWARM A. Second column: Number of data from SWARM B. Third column: Number of data from SWARM C.

q_flag CDF_UINT1 1 - Product quality flag. Value of zero indicates good quality / no issues. The meaning of the individual bits are described below:
Bit Set if
1 Input time-series is shorter than 1-year filter used to separate internal and external coefficients. This is unavoidable at the start of the mission.
2 Internal/external separation filter has at least one bad/missing datum. This is not necessarily serious (check n_data, above and bits 3 and 4, below).
3 total n_data for this model is < 90% of the expected maximum available.
4 Internal/external separation filter has at least one bad/missing datum amongst the most recent (five) where it is most sensitive.

Example: decimal ‘9' means bits ‘1' and ‘4' set.

Output Data Time series of external and induced SH coefficients in Solar Magnetic and Geographic coordinate frames; root-mean-square differences between (processed) input data and models; number of data from each satellite used for each model; quality flag.
Output time span 1 day
Update rate Daily
Latency < 1 day
Notes  

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MIO_VAL_2C
Product identifier MIO_VAL_2C
Definition Validation report for ionospheric field model from CI chain
Input Data MIO_SHAi2C, MIO_VALi2C
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate As for MIO_SHA_2C
Latency 1 month
Notes  

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MIO_VAL_2D
Product identifier MIO_VAL_2D
Definition Validation report for ionospheric field model from dedicated chain
Input Data MIO_SHAi2D, MIO_VALi2D
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate As for MIO_SHA_2D
Latency 1 month
Notes  

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MIO_VAL_2_
Product identifier MIO_VAL_2_
Definition Comparison validation report for ionospheric field model
Input Data MIO_SHA_2C, MIO_SHA_2D, MIO_VAL_2C, MIO_VAL_2D
Data volume < 1 Mb per day
Data format PDF format
Output Data PDF file
Update rate Each time when both, MIO_SHA_2C and MIO_SHA_2D are released.
Latency 1 month
Notes  

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MIO_SHA_2C
Product identifier MIO_SHA_2C
Definition Spherical harmonic representation of the daily geomagnetic variations at mid and low latitudes (Sq and EEJ)
Input Data MIO_SHAi2C, MIO_VAL_2_
Input Time Span Same as MIO_SHAi2C
Spatial representation Same as MIO_SHAi2C
Time representation Same as MIO_SHAi2C
Units Same as MIO_SHAi2C
Resolution Same as MIO_SHAi2C
Uncertainty Same as MIO_SHAi2C
Quality indicator Same as MIO_SHAi2C
Data volume Same as MIO_SHAi2C
Data format Same as MIO_SHAi2C
Output Data Same as MIO_SHAi2C
Output time span Same as MIO_SHAi2C
Update rate Same as MIO_SHAi2C
Latency Same as MIO_SHAi2C
Notes  

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MIO_SHA_2D
Product identifier MIO_SHA_2D
Definition Spherical harmonic representation of the daily geomagnetic variations at mid and low latitudes (Sq and EEJ)
Input Data MIO_SHAi2D, MIO_VAL_2_
Input Time Span Same as MIO_SHAi2D
Spatial representation Same as MIO_SHAi2D
Time representation Same as MIO_SHAi2D
Units Same as MIO_SHAi2D
Resolution Same as MIO_SHAi2D
Uncertainty Same as MIO_SHAi2D
Quality indicator Same as MIO_SHAi2D
Data volume Same as MIO_SHAi2D
Data format Same as MIO_SHAi2D
Output Data Same as MIO_SHAi2D
Output time span Same as MIO_SHAi2D

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IBIxTMS_2F
Product identifier IBIxTMS_2F
Definition Ionospheric bubble index
Input Data MAGx_LR_1B, EFIx_PL_1B, Satellite positions, Time stamps (UTC)

AUX_IGR_2F, AUX_COR_2F, AUX_LIT_2F, AUX_PMF_2F, AUX_F10_2F, AUX_DST_2F, AUX_IMF_2F, AUX_SWV_2F, AUX_PSM_2F, AUX_PGM_2F

Input Time Span 3 days
Spatial representation One index per data point (characterising whether the magnetic observation is affected by bubble or not.)
Time representation 1s time series
Units N/A
Resolution N/A
Uncertainty N/A
Quality indicator Flags_Bubble:

 

0 Quiet
1 Confirmed plasma bubble
2 Unconfirmed plasma bubble
4 Large peak in unfiltered magnetic field residuals
8 Time gap
16 Too many peaks in filtered magnetic field residuals
32 Outside equatorial orbit segment or invalid latitude/local time


Flags_B, Flags_F and Flags_q provided in [AD-5].

Data volume ~4 MB/day/satellite
Data format Swarm L2 CAT-2 IBI Product CDF Output Specification

 

Variables

Variable Name Description Type Units
Timestamp Time stamp in UTC CDF_EPOCH ms
Latitude Geographic latitude CDF_DOUBLE degree
Longitude Geographic longitude CDF_DOUBLE degree
Radius Geographic radius CDF_DOUBLE m
Bubble_Index Plasma Bubble Index
0 Quiet
1 Bubble
-1 Not analyzed
CDF_INT2 No unit
Bubble_Probability

Detection probability of the plasma bubble

0 not probabale
1 very probable

The bubble probability is set to 0 by default for all data with a Flags_Bubble value of 32. The accuracy of the bubble probability is 0.2.

CDF_DOUBLE No unit
Flags_Bubble Flags related to the plasma bubble index CDF_UINT1 No unit
Flags_F Flags_F passed through from MAGx_L1_B CDF_UINT1 No unit
Flags_B Flags_B passed through from MAGx_L1_B CDF_UINT1 No unit
Flags_q Flags_q passed through from MAGx_L1_B CDF_UINT1 No unit
Output Data time stamps, positions, Bubble Index, Bubble probability, flags
Output time span 1 day
Latency 6 min
Update rate 1 per day
Notes  

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TECxTMS_2F
Product identifier TECxTMS_2F
Definition Time series of the ionospheric total electron content
Input Data GPS RINEX observation and navigation files (GPSX_RO_1B)

Swarm satellite ephemeris (MODX_SC_1B) GPS and Swarm satellite ephemeris (AUX_GPSEPH) GPS transmitter biases(AUX_DCB_2F) Leap seconds (AUX_USLEAP)

Input Time Span 3 days
Spatial representation Line representation of GPS –Swarm link
Time representation 10-s time series for TEC and 1 day for DCB
Units TECU (1016 electrons/m2)
Resolution 1E-8 TECU
Uncertainty 2 TECU
Quality indicator Relative_STEC_RMS (RMS deviation between code and carrier phases) and DCB_Error
Data volume ~4 MB / day / satellite
Data format Variables

 

Variable Name Description Type Unit
Timestamp Time stamp in UTC CDF_EPOCH ms
Latitude Geographic latitude CDF_DOUBLE degree
Longitude Geographic longitude CDF_DOUBLE degree
Radius Geographic radius CDF_DOUBLE km
GPS_Position X-,Y-,Z-coordinates (WGS84) of the GPS satellite CDF_DOUBLE km
LEO_Position X-,Y-,Z-coordinates (WGS84) of the LEO satellite CDF_DOUBLE m
PRN GPS satellite PRN CDF_UINT2 No Unit
L1 GPS L1 carrier phase observation CDF_DOUBLE m
L2 GPS L2 carrier phase observation CDF_DOUBLE m
P1 GPS P1 code phase observation CDF_DOUBLE m
P2 GPS P2 code phase observation CDF_DOUBLE m
S1 GPS signal-to-noise ratio or raw signal strength on L1 CDF_DOUBLE No Unit
S2 GPS signal-to-noise ratio or raw signal strength on L2 CDF_DOUBLE No Unit
Absolute_STEC Absolute slant TEC CDF_DOUBLE TECU
Relative_STEC Relative slant TEC CDF_DOUBLE TECU
Relative_STEC_RMS Root mean square error of relative slant TEC CDF_DOUBLE TECU
DCB GPS receiver differential code bias CDF_DOUBLE TECU
DCB_Error Error of the GPS receiver differential code bias CDF_DOUBLE TECU
Output Data time stamps, positions, PRN, L1, L2, P1, P2, S1, S2, TEC, RMS, DCB, DCB_Error
Output time span 1 day
Latency 6 min
Update rate 1 per day
Notes  

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FAC_TMS_2F (FAC-dual)
Product identifier FAC_TMS_2F
Definition

Time series of field-aligned and radial current densities along the orbit using the dual-satellite method. Field-aligned current (FAC) density is derived by the multiplication of the radial current (IRC) density with the inclination angle of the geomagnetic field. The field-aligned current density can only be calculated at latitudes, where the magnetic field is well inclined, i.e. |I| > 30°. Near the magnetic equator for magnetic inclination angles |I| < 30° FAC values are set to NaN. The radial current density can be provided along the whole orbit, except for latitudes θ>86° (near poles), where both FAC and IRC values are set to NaN. 

Note that the magnetic field data used for the dual-satellite method is low-pass filtered with a 3-dB cutoff period of 20 s (corresponding to a wavelength of 150 km). This step is indispensable because the lateral distance between Swarm A and Swarm C has to be taken into account.

Input Data MAGA_LR_1B, MAGC_LR_1B, Time stamps (UTC)

AUX_IGR_2F, AUX_COR_2F, AUX_LIT_2F, AUX_PMF_2F, AUX_F10_2F, AUX_DST_2F, AUX_IMF_2F, AUX_SWV_2F, AUX_PSM_2F, AUX_PGM_2F

Input Time Span 3 days
Spatial representation Current density estimates along entire orbits at positions between SwA and SwC
Time representation Time series of current density, Δt=1sec
Units Current density: µA/m2
Resolution Current density: 1E-6 µA/m2
Uncertainty 50 nA/m2 for periods 10s to 90min on top of constant bias of <200nA/m2, for latitudes below 80°, gradually degrading between 80° to 86°, no values beyond 86°
Quality indicator Flags:

A table below presents the list of 10 individual and independent digits, characterizing the FAC-dual (FAC_TMS_2F) product quality. Digits from 1 to 8 report issues that may have been occurred at one or more of the measurement points used for the computation of a current density value. Digits 9 and 10 report whether the NaN values for the current density were used or not. Values N>0 mark the number of measurement points that were affected and value 0 marks not affected ones. For FAC-dual N can be equal to 1, 2, 3, or 4.

Digit-Nr. Value Meaning
1 0/N A short (< 5 seconds) data gap occurred, which was interpolated linearly
2 0/N A long (> 5 seconds) data gap occurred, which cannot be interpolated linearly, in the vicinity
3 0/N No EST (external part of AUX_DST_2F) data were available, and a default value was used for the magnetospheric field model
4 0/N No IST (external part of AUX_DST_2F) data were available, and a default value was used for the magnetospheric field model
5 0/N No solar radio flux (AUX_F10_2F) data were available, and a default value was used for the magnetospheric field model
6 0/N No interplanetary magnetic field (AUX_IMF_2F) data were available, and a default value was used for the magnetospheric field model
7 0/N No Em (merging electric field) data were available, and a default value was used for the magnetospheric field model
8 0/N No magnetospheric field coefficients (Aux_PMF_2F or Aux_PSM_2F or Aux_PGM_2F) were available, and magnetospheric field is set to 0
9 0/1 For FAC-dual, this digit is equal to 1 if latitude |θ| >86° (near geographic poles)
(IRC = NaN and FAC = NaN)
10 0/1 This digit is equal to 1 if inclination |I| < 30° (near magnetic equator)
(FAC = NaN)

Flags_B, Flags_F and Flags_q are handed through from Level 1b processing [AD-5].

Data volume 5 MB per day
Data format
Variable Name Data Type Descriptions Units
Timestamp CDF_EPOCH Time, UTC milli-seconds
Latitude CDF_DOUBLE Position in ITRF, Latitude degrees
Longitude CDF_DOUBLE Position in ITRF, Longitude degrees
Radius CDF_DOUBLE Position in ITRF, Radius m
IRC CDF_DOUBLE Ionospheric radial current (IRC) µA/m2
IRC_Error CDF_DOUBLE uncertainty of IRC µA/m2
FAC CDF_DOUBLE Field-aligned current (FAC) µA/m2
FAC_Error CDF_DOUBLE uncertainty of FAC µA/m2
Flags CDF_UINT4 Flags characterizing the product quality (processing flags) -
Flags_F CDF_UINT4 Flags_F passed through from L1b and accumulated for quad points -
Flags_B CDF_UINT4 Flags_B passed through from L1b and accumulated for quad points -
Flags_q CDF_UINT4 Flags_q passed through from L1b and accumulated for quad points -
Output Data time stamps, positions, radial current density, field-aligned current density, quality flags
Output time span 1day
Update rate 1 per day
Latency 10 min
Notes  

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FACxTMS_2F (FAC-single)
Product identifier FACxTMS_2F
Definition Time series of field-aligned and radial current densities along the orbit from single satellite measurements. Field-aligned current (FAC) density is derived by the multiplication of the radial current (IRC) density with the inclination angle of the geomagnetic field. The field-aligned current density can only be calculated at latitudes, where the magnetic field is well inclined, i.e. |I| > 30°. Near the magnetic equator for magnetic inclination angles |I| < 30° FAC values are set to NaN. The radial current density can be provided along the whole orbit. Scale size >7.5 km.
Input Data MAGx_LR_1B, Satellite positions, Time stamps (UTC)

AUX_IGR_2F, AUX_COR_2F, AUX_LIT_2F, AUX_PMF_2F, AUX_F10_2F, AUX_DST_2F, AUX_IMF_2F, AUX_SWV_2F, AUX_PSM_2F, AUX_PGM_2F

Input Time Span 3 days
Spatial representation Current density estimates along entire orbits at positions of SwA, SwB, and SwC.
Time representation Time series of current density, Δt=1sec
Units Current density: µA/m2
Resolution Current density: 1E-6 µA/m2
Uncertainty less than FAC_TMS_2F, 70 nA/m2 on top of constant bias of <200nA/m2, for latitudes below 80°, gradually degrading between 80° to 86°, no values beyond 86°
Quality indicator Flags:

A table below presents the list of 10 individual and independent digits, characterizing the FAC-single (FACxTMS_2F) product quality. Digits from 1 to 8 report issues that may have been occurred at one or more of the measurement points used for the computation of a current density value. Digits 9 and 10 report whether the NaN values for the current density were used or not. Values N>0 mark the number of measurement points that were affected and value 0 marks not affected ones. For FAC-single N can be equal to 1 or 2.

Digit-Nr. Value Meaning
1 0/N A short (< 5 seconds) data gap occurred, which was interpolated linearly
2 0 For FAC-single, this digit is always zero because no filtering is done
3 0/N No EST (external part of AUX_DST_2F) data were available, and a default value was used for the magnetospheric field model
4 0/N No IST (external part of AUX_DST_2F) data were available, and a default value was used for the magnetospheric field model
5 0/N No solar radio flux (AUX_F10_2F) data were available, and a default value was used for the magnetospheric field model
6 0/N No interplanetary magnetic field (AUX_IMF_2F) data were available, and a default value was used for the magnetospheric field model
7 0/N No Em (merging electric field) data were available, and a default value was used for the magnetospheric field model
8 0/N No magnetospheric field coefficients (Aux_PMF_2F or Aux_PSM_2F or Aux_PGM_2F) were available, and magnetospheric field is set to 0
9 0 For FAC-single, this digit is always equal to 0
10 0/1 This digit is equal to 1 if inclination |I| < 30° (near magnetic equator)
(FAC = NaN)

Flags_B, Flags_F and Flags_q are handed through from Level 1b processing [AD-5].

Data volume 5MB per day, per satellite
Data format Same as for FAC-dual (FAC_TMS_2F)
Output Data time stamps, positions, radial current density, field-aligned current density, quality flags
Output time span 1day
Latency 10 min
Update rate 1 per day
Notes  

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EEFxTMS_2F
Product identifier EEFxTMS_2F
Definition Dayside equatorial electric field
Input Data MAGx_LR_1B, AUX_DST_2F, AUX_KP__2F , AUX_F10_2F, AUX_IGR_2F, AUX_COR_2F, AUX_LIT_2F, AUX_PMF_2F, AUX_PSM_2F, AUX_PGM_2F, AUX_IRZ_2F
Input Time Span Every dayside equator crossing ±20 minutes
Spatial representation One longitude/latitude pair (on the magnetic equator ) for each output value
Time representation Single values at time of dayside equator crossing
Units V/m
Resolution 0.1 mV/m
Uncertainty 0.1 mV/m
Quality indicator Relative error between modeled and observed current profile
Data volume < 2 kB
Data format CDF

 

Variable Name Type Description Units
timestamp CDF_EPOCH milliseconds elapsed since 00:00:00 January 1, 2000 UTC Milliseconds
longitude CDF_DOUBLE Geographic longitude of satellite crossing of the magnetic equator Degrees
latitude CDF_DOUBLE Geographic latitude of satellite crossing of the magnetic equator Degrees
EEF CDF_DOUBLE Estimate of the equatorial electric field V/m
RelErr CDF_DOUBLE Quality indicator of EEF estimate; relative error between modeled and observed current profile N/A
flags CDF_UINT2 Flags describing data gaps and satellite identification
Bit Description
1 EEF estimate came from Swarm satellite A data
2 EEF estimate came from Swarm satellite B data
3 EEF estimate came from Swarm satellite C data
4 Processor failed due to a too large data gap in the Level 1b input data
N/A
Output Data Longitude, latitude, time, EEF value, quality-indicator, flags
Output time span Continuous for entire mission. One value for each day-side equator crossing (90 minute sampling for day-night local time orbits, 45 minutes for dawn-dusk orbits)
Update rate One output file per day
Latency 20 minutes
Notes  

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Precise Orbit Determination Products

Final Level 2 Products

SP3xCOM_2_

Product identifier SP3xCOM_2_
Definition Time series of dynamic position and velocity of the center of mass of each satellite in the ITRF (Earth-fixed) frame
Input Data GPSA_RO_1B, GPSB_RO_1B, GPSC_RO_1B

STRAATT_1B, STRBATT_1B, STRCATT_1B
MODA_SC_1B, MODB_SC_1B, MODC_SC_1B
External data from IGS, IERS, CODE

Input Time Span 30 hr (daily batches with overlap)
Spatial representation N/A
Time representation GPS time (seconds – s), time step = 10 s
Units km for position, dm/s for velocity
Resolution 1 ps for time, mm for position, 0.1 μm/s for velocity
Uncertainty 10 cm 3D for position
Quality indicator Validation report SP3xVAL_2_
Data volume < 2 Megabyte (MB) per satellite per day
Data format SP3c (section 4.3.2 of [AD-15])
Output Data SP3c file
Output time span 24 hr
Update rate Daily
Latency 21 days
Notes Central 24 hr of input time span will be selected for SP3 product

Quality report will be provided as separate Level 2 product

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SP3xKIN_2_

Product identifier SP3xKIN_2_
Definition Time series of kinematic position of the center of mass of each satellite in the ITRF (Earth-fixed) frame
Input Data GPSA_RO_1B, GPSB_RO_1B, GPSC_RO_1B

STRAATT_1B, STRBATT_1B, STRCATT_1B
MODA_SC_1B, MODB_SC_1B, MODC_SC_1B
External data from IGS, IERS, CODE

Input Time Span 30 hr (daily batches with overlap)
Spatial representation N/A
Time representation GPS time (seconds – s), observation epochs
Units km for position, dm/s for velocity
Resolution 1 ps for time, mm for position, 0.1 μm/s for velocity
Uncertainty 10 cm 3D for position
Quality indicator Validation report SP3xVAL_2_
Data volume < 15 Megabyte (MB) per satellite per day
Data format SP3c
Output Data SP3c file
Output time span 24 hr
Update rate Daily
Latency 21 days
Notes Central 24 hr of input time span will be selected for SP3 product

Quality report will be provided as separate Level 2 product

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SP3xVAL_2_

Product identifier SP3xVAL_2_
Definition Validation report for precise orbit solutions SP3xCOM_2_ and SP3xKIN_2_
Input Data SP3xCOM_2_ and SP3xKIN_2_

ILRS Swarm tracking data
Diagnostic and statistical output from orbit determination process

Input Time Span 30 hr
Data volume < 20 Mb per satellite per day
Data format PDF format
Output Data PDF file
Output time span 24 hr
Update rate 1 day
Latency 21 per day
Notes 30 hr time input time span includes overlaps between consecutive orbit solutions

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ACCxPOD_2_

Product identifier ACCxPOD_2_
Definition Time series of non-gravitational accelerations obtained by POD
Input Data SP3xCOM_2_, GPSx_RO_1B, STRxATT_1B, ACCx_PR_1B
External data from CODE
Input Time Span 30 hr (daily batches with overlap)
Spatial representation N/A
Time representation UTC (seconds – s), time step = 30 sec
Units m/s2
Resolution 64 bit double precision floating point number format
Uncertainty 10-7 m/s2 variance for along-track and cross-track directions
Quality indicator Validation report DNSxVAL_2_
Data volume < 10 Kb per satellite per day
Data format CDF

 

Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Observation time
acc_pod CDF_REAL8 3 m/s2 Estimated non-gravitational accelerations (X,Y,Z)
Output Data CDF file with time series of accelerations
Output time span 24 hr
Update rate 1 day
Latency 21 days
Notes

Version 0201 data is computed from GPS data using a Kalman filter approach. The reduced-dynamic orbit is used as a priori reference orbit. The level 1B accelerometer files are only used for spacecraft mass and CoG information

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Magnetic Forcing of the Upper Atmosphere

Intermediate Level 2 Products

ACCxDISi2_
Product identifier ACCxDISi2_
Definition List of disturbances in accelerometer data
Input Data ACCx_PR_1B, ACCx_FMi2_
Input Time Span Variable
Spatial representation N/A
Time representation UTC
Units m/s2
Resolution 64 bit double precision floating point
Quality indicator Validation report ACCxVAL_2_
Data volume ~10 kB / day
Data format CDF

 

Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Disturbance time in UTC
type CDF_REAL8 1 N/A Type of disturbance
duration CDF_REAL8 1 s Duration of disturbance
mag_lin CDF_REAL8 3 m/s2 Magnitude of disturbance in linear accelerations
mag_ang CDF_REAL8 3 m/s2 Magnitude of disturbance in angular accelerations
Output Data CDF file with list of disturbances in accelerometer data
Output time span Variable
Update rate Every 3 months
Latency 1 month
Notes All accelerations are provided in the CRF (x-direction is roughly along-track, y-direction is roughly cross-track, z-direction is roughly nadir)

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ACCx_FMi2_
Product identifier ACCx_FMi2_
Definition Time series of non-gravitational acceleration from force models
Input Data MODx_SC_1B, STRxATT_1B, AUX_KP__2F , AUX_F10_2F
Input Time Span 24 h
Spatial representation N/A
Time representation UTC (seconds – s), time step = 10 sec
Units m/s2
Resolution 64 bit double precision floating point format
Uncertainty 0.01 scale factor for flight direction, 10-7 m/s2 for along-track bias
Quality indicator Validation report ACCxVAL_2_
Data volume 1.5 MB / day
Data format CDF

 

Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Epoch of observation
a_total CDF_REAL8 3 m/s2 Total non-gravitational acceleration
a_aero CDF_REAL8 3 m/s2 Aerodynamic acceleration
a_solar CDF_REAL8 3 m/s2 Solar radiation pressure acceleration
a_albedo CDF_REAL8 3 m/s2 Earth albedo radiation pressure acceleration
a_infrared CDF_REAL8 3 m/s2 Earth infrared radiation pressure acceleration
Output Data CDF file with non-gravitational acceleration from force models
Output time span 24 hr
Update rate daily
Latency 21 days
Notes All accelerations are provided in the CRF (x-direction is roughly along-track, y-direction is roughly cross-track, z-direction is roughly nadir)

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Final Level 2 Products

ACCxCAL_2_
Product identifier ACCxCAL_2_
Definition Time series of corrected and calibrated acceleration, including all corrections and calibration parameters
Input Data ACCx_PR_1B, ACCxPOD_2_, ACCxDISi2_
Input Time Span 24 h
Spatial representation Three-dimensional time series along satellite orbit
Time representation UTC
Units m/s2 for accelerometer biases, dimensionless for scale factors
Resolution 64 bit double precision floating point number format
Uncertainty 0.01 scale factor for flight direction, 10-7 m/s2 for along-track bias
Quality indicator Validation report ACCxVAL_2_
Data volume 15 MB per day
Data format CDF

 

Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Epoch of observation (UTC)
a_cal CDF_REAL8 3 m/s2 Accelerometer biases (X,Y,Z)
a_stp CDF_REAL8 3 m/s2 Step correction for linear accelerations
a_tmp CDF_REAL8 3 m/s2 Temperature correction for linear accelerations
a_gg CDF_REAL8 3 m/s2 Gravity gradient correction for linear accelerations
a_ca CDF_REAL8 3 m/s2 Centrifugal acceleration correction for linear accelerations
s CDF_REAL8 3 N/A Scale factor (time series) for linear accelerations
b CDF_REAL8 3 m/s2 Preliminary bias for linear accelerations
flag_cor CDF_UINT4 1 N/A Flag indicating which corrections are applied
flag_val CDF_UINT4 1 N/A Flag indicating if data is valid
flag_thr CDF_UINT4 1 N/A Flag indicating if thruster activations
Output Data CDF file with corrected and calibrated accelerations from the accelerometer, all corrections and calibration parameters, and flags; sampling rate is 1 Hz (accelerations are at original measurement epochs)
Output time span 1 day
Update rate 3 months
Latency 1 month
Notes All accelerations are provided in the CRF (x-direction is roughly along-track, y-direction is roughly cross-track, z-direction is roughly nadir)

Calibration was performed against non-gravitational accelerations from POD that are contained in product ACCxPOD_2_

Preliminary bias will be replaced by final bias in aerodynamic accelerations in product ACCx_AE_2_

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ACCx_AE_2_
Product identifier ACCx_AE_2_
Definition Time series of calibrated accelerometer data, pre-processed to represent external non-gravitational forces and aerodynamic accelerations
Input Data ACCx_PR_1B, STRxATT_1B, SP3xCOM_2_, ACCxCAL_2_, ACCxPOD_2_, AUX_F10_2_, AUX_KP__2_

External data from IERS

Input Time Span 24 hr
Spatial representation Time-series along satellite track, altitude (m), latitude (deg), longitude (deg) and local solar time (hours) available based on MODX_SC_1B
Time representation UTC (seconds – s), nominally with 10 s time step
Units nm/s2 for accelerations, s for time, m for altitude, degrees for latitude, longitude, hours for local solar time
Resolution 64 bit double precision floating point number format
Uncertainty N/A
Quality indicator Validation report TDWxVAL_2_
Data volume < 10 Mbyte per satellite per day
Data format CDF

 

Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Observation time
acc_total_obs CDF_REAL8 1 m/s2 Non-gravitational acceleration from accelerometer and GPS receiver (X ≈ along-track)
acc_ro_obs CDF_REAL8 1 m/s2 Aerodynamic accelerations (X ≈ along-track)
Output Data CDF file with time series
Output time span 24 hr
Update rate 1 day
Latency 21 days
Notes The applied accelerometer bias and scale factors are available in the metadata.
ACCxVAL_2_
Product identifier ACCxVAL_2_
Definition Validation report for measured, modeled and POD accelerations ACCxCAL_2_, ACCx_FMi2_ and ACCxPOD_2_
Input Data ACCxDISi2_, ACCxCAL_2_, ACCxPOD_2_, ACCx_FMi2_
Input Time Span Variable
Data volume – 10 MB / day
Output Data PDF file
Output time span Variable
Update rate 3 months
Latency 1 month

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DNSxWND_2_
Product identifier DNSxWND_2_
Definition Thermospheric density at the satellite location
Input Data STRxATT_1B, ACCx_PR_1B, ACCx_AE_2_, SP3_COM__2,

AUX_IER_2_, AUX_AER_2_, AUX_F10_2_, AUX_KP__2_
External data from IERS

Input Time Span 24 hr
Spatial representation Time-series along satellite track, altitude (m), latitude (deg), longitude (deg) and local solar time (hours) available based on MODX_SC_1B
Time representation UTC (seconds – s), nominally with 10 s time step
Units kg/m3 for density, m/s for wind speed
Resolution 64 bit double precision floating point number format
Uncertainty 30% of variance from models for neutral density
Quality indicator Validation report TDWxVAL_2_
Data volume < 15 Mbyte per satellite per day
Data format CDF
Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Observation time
altitude CDF_REAL8 1 m Observation altitude
latitude CDF_REAL8 1 deg Observation geodetic latitude
longitude CDF_REAL8 1 deg Observation geodetic longitude
local_solar_time CDF_REAL8 1 s Observation local solar time
density CDF_REAL8 1 kg/m3 Thermospheric neutral density
Output Data CDF file with time series
Output time span 24 hr
Update rate 1 day
Latency 21 days
Notes None

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DNSxPOD_2_
Product identifier DNSxPOD_2_
Definition Thermospheric density at the satellite location along with auxiliary parameters (altitude, latitude, longitude and local solar time). Derived from non-gravitational accelerations based on precise orbit determination data only (ACCxPOD_2_)
Input Data MODx_SC_1B, STRxATT_1B, ACCx_PR_1B, ACCx_FMi2_, GPSx_RO_1B, ACCxPOD_2_
Input Time Span 24 hr
Spatial representation Time-series along satellite track, altitude (m), latitude (deg), longitude (deg) and local solar time (hours) available based on MODx_SC_1B
Time representation UUTC (seconds – s), nominally with 30 s time step, as well as orbital averages
Units kg/m3 for density
Resolution 64 bit double precision floating point number format
Uncertainty 30% of variance from models for neutral density
Quality indicator Validation report DNSxVAL_2_
Data volume < 160 Kbyte per satellite per day
Data format CDF
Field name Type Dimension Unit Contents
time CDF_EPOCH 1 ms Time of observation
density CDF_REAL8 1 kg/m3 Density derived from GPS accelerations
density_orbitmean CDF_REAL8 1 kg/m3 Orbit-average of density derived from GPS accelerations
altitude CDF_REAL8 1 m Altitude
latitude CDF_REAL8 1 deg Geodetic latitude
longitude CDF_REAL8 1 deg Geodetic longitude
Output Data CDF file with time series
Output time span 24 hr
Update rate 1 day
Latency 21 days
Notes

The density data is derived from the ACCxPOD non-gravitational acceleration component along the spacecraft X-axis.

The following processing steps have been performed:

- Modelled radiation pressure accelerations have been subtracted from the full non-gravitational accelerations, to arrive at aerodynamic accelerations. Because the Kalman filter approach results in a smoothed representation of true accelerations, the radiation pressure model output has been smoothed as well, in order to avoid density jump artefacts at eclipse transitions.

- The resulting aerodynamic accelerations are converted into densities, using an aerodynamic model based on a panelised representation of the satellite. The gas-surface interaction is based on diffuse reflection, and an energy accommodation coefficient of 0.93 is used.

- The densities are multiplied by a factor of 1.32, to compensate for the observed difference in scale between the panelised aerodynamic model, and an aerodynamic model based on a more accurate representation of the geometry of the Swarm satellites. The more accurate model will be implemented in a future updated version of the data.

- The density_orbitmean field contains the mean density, taken over one orbital period, for each time step.The orbital period in seconds is provided as metadata in the CDF file.

At high altitude and low solar activity, the errors inherent in the radiation pressure model and acceleration determination using GPS data can become significant compared to the magnitude of the acceleration signal. This can result in large density errors and even negative densities. Users are advised to use the orbit mean densities in those conditions.

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TDWxVAL_2_
Product identifier TDWxVAL_2_
Definition Validation report for thermospheric densities and winds DNSxWND_2_
Input Data DNSxWND_2_, ACCx_AE_2_, ACCxCAL_2_, ACCxPOD_2_
Input Time Span 24 hr
Data volume < 20 Mb per satellite per day
Data format PDF format
Output Data PDF file
Output time span 24 hr
Update rate 1 day
Latency 21 days
Notes Associated with ACCxCAL_2_, ACCxPOD_2_, ACCx_AE_2_ and DNSxWND_2_

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DNSxVAL_2_
Product identifier DNSxVAL_2_
Definition Validation report for GPS-derived accelerations ACCxPOD_2_, as well as for thermosphere density and orbit-average thermosphere density, derived from these acceleration DNSxPOD_2_
Input Data DNSxPOD_2_, ACCxPOD_2_
Input Time Span 24 hr
Data volume < 20 Mb per satellite per day
Data format PDF format
Output Data PDF file
Output time span  24 hr
Update rate 1 day
Latency 21 days
Notes Associated with DNSxPOD_2, ACCxPOD_2_

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Quick Look reports for L1b products

MAG_QL__2_
Product identifier MAG_QL__2_
Definition Quick-look report for L1b magnetic data
Input Data MAGx_LR_1B, AUX_IGR_2_, AUX_COR_2F, AUX_COR_2_
Input Time Span 24 hr
Spatial representation N/A
Time representation N/A
Units N/A
Precision N/A
Quality indicator N/A
Data volume < 1 Mb/day
Data format PDF format
Output Data PDF file
Output time span and resolution daily and mission-to-date
Update rate daily
Latency target is < 1 day on normal week days
Notes May be developed as an online tool for operation at MPPF

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EFI_QL__2_
Product identifier EFI_QL__2_
Definition Quick-look report for L1b plasma data
Input Data EFIx_PL_1B
Input Time Span 24 hr
Spatial representation N/A
Time representation N/A
Units N/A
Precision N/A
Quality indicator N/A
Data volume <1 Mb/day
Data format PDF format
Output Data PDF file
Output time span and resolution daily and mission-to-date
Update rate daily
Latency target is < 1 day on normal week days
Notes May be developed as an online tool for operation at MPPF

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Auxiliary data

AUX_KP__2_
Product identifier AUX_KP__2_
Definition Kp - Planetary three-hourly index of geomagnetic activity recorded at 13 mid-latitude ground-based observatories and corresponding ap series
Application MSW_EULi2_C, MSW_EULi2_D, MSW_EUL_2F, MCO_SHAi2C, MCO_SHAi2D, MCO_SHA_2F, MLI_SHAi2C, MLI_SHAi2D, MIO_SHAi2C, MIO_SHAi2D, DNSxWND_2_, WP16000
Spatial representation 1 value describing the global state
Time representation Time series in UT (3-hours average: 0-3h, 3-6h, 6-9h, 9-12h, 12-15h, 15-18h, 18-21h, 21-24h)
Units Kp: Unitless, ap: nT
Resolution Kp indices range in 28 steps from 0 (quiet) to 9 (greatly disturbed) with fractional parts expressed in thirds of a unit. A Kp-value equal to 27, for example, means 2 and 2/3 or 3-; a Kp-value equal to 30 means 3 and 0/3 or 3 exactly; and a Kp-value equal to 33 means 3 and 1/3 or 3+.
Uncertainty N/A
Quality indicator Not provided
Data format ASCII listing
# Three-hours indices Kp and ap
# created @ 2010-12-06 04:40:01
#
  MJD2000  Kp  ap
 -365.9375  3   2
 -364.8125 27  12
 -364.6875 10   4
  ...

Format description:

  • File starts with a number of header lines all starting with #
  • Followed by one 1 line for description of column variables
  • Afterwards each line is formatted as follows:
Column  Format  Description
======  ======  ===========
 1-11   f11.4   MJD2000 centered at the three-hours
                time interval (0-3, 3-6, 6-9, 9-12,
                      12-15, 15-18, 18-21, 21-24 UT)
12-14      i3    3-hourly Kp index
15-18      i4    3-hourly ap index
Data volume 27 kB / year
Update rate 2 updates per month
Latency few days to one months
Data source GFZ (based on information from http://www.gfz-potsdam.de/pb2/pb23/GeoMag/niemegk/kp_index/index.html)
Notes  

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AUX_KP__2F
Product identifier AUX_KP__2F
Definition Kp - Planetary three-hourly index of geomagnetic activity recorded at 13 mid-latitude ground-based observatories.
Application EEFxTMS_2F
Spatial representation 1 value describing the global state
Time representation Time series (3-hours average: 0-3h, 3-6h, 6-9h, 9-12h, 12-15h, 15-18h, 18-21h, 21-24h)
Units unitless
Resolution Kp indices range in 28 steps from 0 (quiet) to 9 (greatly disturbed) with fractional parts expressed in thirds of a unit. A Kp-value equal to 27, for example, means 2 and 2/3 or 3-; a Kp-value equal to 30 means 3 and 0/3 or 3 exactly; and a Kp-value equal to 33 means 3 and 1/3 or 3+.
Uncertainty N/A
Quality indicator N/A
Data volume 27 kB / year
Data format ASCII table;
11 1 12421 22017 31313171320 35  7  6  2  5  5  6  5  7  50.21
11 1 22421 32020 71010171717 35  7  7  3  4  4  6  6  6  50.21
11 1 32421 41313 71317232730 43  5  5  3  5  6  9 12 15  80.42
11 1 42421 51727171717202013 44  6 12  6  6  6  7  7  5  70.31
11 1 52421 6 3 0 01313101313 20  2  0  0  5  5  4  5  5  30.10
11 1 62421 72313 3 7 3132750 42  9  5  2  3  2  5 12 48 110.63
11 1 72421 85733333023233733 81 67 18 18 15  9  9 22 18 221.15
11 1 82421 92723233033272730 66 12  9  9 15 18 12 12 15 130.73
…

Format description file wdc_fmt.doc:

Column  Format  Description
======  ======  ===========
 1- 2     i2    yy, last two digits of year
 3- 4     i2    mm, month (1-12)
 5- 6     i2    dd, day of month (1-31)

 7-10     i4    Bartels solar rotation number - a sequence of 27-day
                intervals counted continuously from February 8, 1832
11-12     i2    Number of day within the Bartels 27-day cycle

13-28    8i2    3-hourly Kp indices (0-3, 3-6, 6-9, 9-12, 12-15,
                                     15-18, 18-21, 21-24 UT)
29-31     i3    Daily Kp sum, expressed to the nearest third of a unit
                (supplied only for tradition, use Ap scientific
                 purposes!)

32-55    8i3    3-hourly ap indices (0-3, 3-6, 6-9, 9-12, 12-15,
                                     15-18, 18-21, 21-24 UT)
56-58     i3    Ap equivalent daily amplitude - the arithmetic mean
                of the day's eight ap values

59-61     f3.1  Cp or Planetary Daily Character Figure - a qualitative
                Estimate of overall level of magnetic activity for the
                day determined from the sum of the eight ap
                amplitudes.  Cp ranges, in steps of one-tenth, from 0 (quiet)
                to 2.5 (highly disturbed)

62-62     i1    C9 - a conversion of the 0 to 2.5 range of the Cp index to
                one digit between 0 and 9

63-65     i3    International Sunspot Number. Records contain
                * Zurich number through December 31, 1980
                * International Brussels number thereafter

66-70     f5.1  Ottawa 10.7 cm Solar Radio Flux adjusted to 1 AU - measured
                at 1700 UT daily and expressed in units of 10^-22 W/m^2/Hz.
                Observations began on February 14, 1947. From that date
                through December 31, 1973, the fluxes given here do not
                reflect the revisions Ottawa made in 1966.

71-71     i1    Flux Qualifier
                0: indicates flux required no adjustment;
                1: indicates flux required adjustment for burst
                   in progress at time of measurement;
                2: indicates a flux approximated by either
                   interpolation or extrapolation;
                3: indicates no observation.

(The last three fields in columns 63-71 are optional. If all three or one of them are missing a new line starts after the last record.)

Latency < 3 hours
Update rate 3 hours
Data source http://www-app3.gfz-potsdam.de/kp_index/qlyymm.wdc

data format: ftp://ftp.gfz-potsdam.de/pub/home/obs/kp-ap/wdc/wdc_fmt.doc, Adolf-Schmidt-Observatory for Geomagnetism Niemegk, Helmholtz Center Potsdam, German Research Centre for Geosciences, GFZ, Potsdam, Germany.

Notes The 3 hourly KP index values are published with a delay between 1 and 3 hours with respect to the hour of the day.

All the three hours KP index values of the day not yet available at the time of the download are filled with "99".

E.g downloading the data after the 7.30 p.m a possible value of the Kp index is 1710102010999999 . Please note that all the 8 i2 value have been filled.

13-28 8i2 3-hourly Kp indices (0-3, 3-6, 6-9, 9-12, 12-15,15-18, 18-21, 21-24 UT)

The Kp daily sum is computed only in case the three hourly KP index covering the whole day are available (all 8 i2 different from "99"). In case of lack of data the Kp daily sum is not computed and the related 3 columns are filled white space. E.g " "

29-31 i3 Daily Kp sum, expressed to the nearest third of a unit (supplied only for tradition, use Ap scientific purposes!)

The 3 hourly Ap index are computed together with the Kp index so the related column will be filled with the Ap values only if the Kp related to the same 3 hour column is available. E.g downloading the data after the 7 p.m a possible value of the Ap index is " 6 4 4 7 4". The value not already computed will remain empty, i.e. filled with spaces.

32-55 8i3 3-hourly ap indices (0-3, 3-6, 6-9, 9-12, 12-15,15-18, 18-21, 21-24 UT)

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AUX_DST_2_
Product identifier AUX_DST_2_
Definition Dst - Equivalent equatorial magnetic disturbance indices derived from hourly scaling of low-latitude horizontal magnetic variation. Dst is directly related to the intensity of the magnetospheric ring current.

Est - Part of the magnetic disturbance which is attributed to external currents (ring current)

Ist - Part of the magnetic disturbance which is attributed to induced currents in the Earth

Application MSW_EULi2_C, MSW_EULi2_D, MSW_EUL_2F, MCO_SHAi2C, MCO_SHAi2D, MCO_SHA_2F, MLI_SHAi2C, MLI_SHAi2D, MIO_SHAi2C, MIO_SHAi2D, WP16000'
Spatial representation 1 value describing the global state
Time representation Time series (1-hour average)
Units nT
Resolution 1 pT
Uncertainty N/A
Quality indicator Not provided
Data volume 45 kB / year
Data format ASCII table;
# Expanded and assembled Dst, Est and Ist, Zero Mean
# created @ 2011-10-24 00:10:00
#
#  MJD2000       Dst       Est       Ist Flag
  -364.97917    -7.000    -8.994     1.994    D
  -364.93750    -4.000    -6.877     2.877    D
  -364.89583    -4.000    -6.873     2.873    D
  -364.85417    -8.000    -9.745     1.745    D
  -364.81250    -8.000    -9.770     1.770    D
  -364.77083    -5.000    -7.626     2.626    D
  -364.72917    -4.000    -6.895     2.895    D
  -364.68750    -1.000    -4.725     3.725    D
  -364.64583     3.000    -1.821     4.821    D
…..

Format description:

Lines 1-3: header information
Line 4: description of column variables

Each line from Line 5 onward:

Column  Format  Description
======  ======  ===========
 1-12   f12.5   MJD2000 centered at the averaging
                time interval (1 hour)
13-22   f10.3    1 hour averaged Dst index
23-32   f10.3    1 hour averaged Est index
33-42   f10.3    1 hour averaged Ist index
43-47   4x,a1    D - Definitive, P - Preliminary
Update rate daily
Latency real time (< 1 day)

definitive (up to several years)

Data source GFZ (based on information from http://swdcwww.kugi.kyoto-u.ac.jp/dstdir/index.html)
Notes Explanation see, e.g., [RD-6]

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AUX_DST_2F
Product identifier AUX_DST_2F
Definition Dst - Equivalent equatorial magnetic disturbance indices derived from hourly scaling of low-latitude horizontal magnetic variation. Dst is directly related to the intensity of the magnetospheric ring current.
Application IBIxTMS_2F, FACxTMS_2F, FAC_TMS_2F, EEFxTMS_2F
Spatial representation 1 value describing the global state
Time representation Time series (1-hour average)
Units nT
Resolution 1.0
Uncertainty Not provided
Quality indicator Not provided
Data volume 45 kB / year
Data format ASCII listing (others)

The format of the file is given in http://wdc.kugi.kyoto-u.ac.jp/dstae/format/dstformat.html.

 

RECORD FORMAT (LENGTH: 120 BYTE FIXED)
COLUMN FORMAT SHORT DESCRIPTION
1-3 A3 Index name 'DST'
4-5 I2 The last two digits of the year
6-7 I2 Month
8 A1 '*' for index
9-10 I2 Date
11-12 A2 All spaces or may be "RR" for quick look
13 A1 'X' (for index)
14 A1 Version (0: quicklook, 1: provisional, 2: final, 3 and up: corrected final or may be space)
15-16 I2 Top two digits of the year (19 or space for 19XX, 20 from 2000)
17-20 I4 Base value, unit 100 nT
21-116 24I4 24 hourly values, 4 digit number, unit 1 nT, value 9999 for the missing data.
First data is for the first hour of the day, and Last data is for the last hour of the day.
117-120 I4 Daily mean value, unit 1 nT. Value 9999 for the missing data.
Latency < 1 day
Update rate < 1 day
Data source We can get the appropriate amount of data from Kyoto World Data Center using the following script.
url='http://wdc.kugi.kyoto-u.ac.jp/cgi-bin/dstae-cgi?'
SCent=20
STens=0
SYear=2
SMonth=01
ECent=20
ETens=1
EYear=1
EMonth=01
Image='GIF'
COLOR='COLOR'
AE=0
Dst=0
Output='DST'
Out='WDC'
Email='bla@bla.de'
output='test.txt'
# original URL:
# http://wdc.kugi.kyoto-u.ac.jp/cgi-bin/dstae-
cgi?SCent=20&STens=1&SYear=1&SMonth=05&ECent=20&ETens=1&EYear=1&EMon
th=06&Image+Type=GIF&COLOR=COLOR&AE+Sensitivity=0&Dst+Sensitivity=0&
Output=DST&Out+format=WDC&Email=bla%40bla.de
wget "http://wdc.kugi.kyoto-u.ac.jp/cgi-bin/dstae-
cgi?SCent=$SCent&STens=$STens&SYear=$SYear&SMonth=$SMonth&ECent=$ECe
nt&ETens=$ETens&EYear=$EYear&EMonth=$EMonth&Image+Type=$Image&COLOR=
$COLOR&AE+Sensitivity=$AE&Dst+Sensitivity=$Dst&Output=$Output&Out+fo
rmat=$out&Email=$Email" -O $output

What we need to input to the script is as follows:

  1. Scent*100+STens*10+SYear= Start year
  2. SMonth= Start month
  3. ECent*100+ETens*10+EYear= End year
  4. EMonth= End month

Then, the script creates an output file named ‘text.txt'

Notes Preliminary Dst

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AUX_F10_2_
Product identifier AUX_F10_2_
Definition F10.7: daily measure of the solar radio flux per unit frequency at a wavelength of 10.7 cm
Application CI, MSW_EULi2D, MSW_EULi2F, MCO_SHAi2F, MLI_SHAi2C, MLI_SHAi2D, MIO_SHAi2D, DNSxWND_2_, WP16000'
Spatial representation One value for global state
Time representation Time series (1 day average)
Units 10-22 Js-1m-2Hz-1
Resolution 0.1
Uncertainty N/A
Quality indicator Not provided
Data volume 32 kB / year
Data format ASCII listing (others)
# Assembled daily observed values of solar flux F10.7
# obtained from
ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/Penticton_O
bserved/daily/DAILYPLT.OBS
# on 17-Mar-2011 09:56:45 by program get_F107.m
# MD2000 F10.7 in units of [10e-22 W m-2 Hz-1]
  -729.5  101.6
  -728.5  101.0
  -727.5  101.1
  -726.5   90.7
  -725.5   89.3
  -724.5   87.0
  -723.5   84.9
  -722.5   82.2
  -721.5   81.6
  -720.5   80.7
  -719.5   84.8
  -718.5   95.8
  -717.5   90.4
…

Format description:

Lines 1-4: header information
Line 5: description of column variables

Each line from Line 6 onward:

Column  Format  Description
======  ======  ===========
 1-08   f8.1    MJD2000 centered at noon
 9-15   f7.1    F10.7 value (‘*' if missing data)
Latency < 10 days
Update rate 1 week
Data source DTU based on information from

ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SOLAR_RADIO/FLUX/Penticton_Observed/

Notes  

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AUX_F10_2F
Product identifier AUX_F10_2F
Definition F10.7: daily measure of the solar radio flux per unit frequency at a wavelength of 10.7 cm
Application IBIxTMS_2F, FACxTMS_2F, FAC_TMS_2F, EEFxTMS_2F, AUX_PMF_2F '
Spatial representation One value for global state
Time representation Time series (1 day average)
Units 10-22 Wm-2Hz-1
Resolution 0.1
Uncertainty Not provided
Quality indicator Not provided
Data volume < 1 MB
Data format The format of the data is described in the header of each data file.

Ex.>

:Product: Daily Solar Data         quar_DSD.txt
:Issued: 2025 UT 07 Jul 2011
#
#  Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#  Please send comments and suggestions to SWPC.Webmaster@noaa.gov
#
#                Quarterly Daily Solar Data
#
#                         Sunspot       Stanford GOES15
#           Radio  SESC     Area          Solar  X-Ray  ------ Flares ------
#           Flux  Sunspot  10E-6   New     Mean  Bkgd    X-Ray      Optical
#  Date     10.7cm Number  Hemis. Regions Field  Flux   C  M  X  S  1  2  3
#---------------------------------------------------------------------------
2011 04 01  109     62      330      1    -999   B2.3   2  0  0  1  0  0  0
2011 04 02  108     66      280      0    -999   B2.2   0  0  0  1  0  0  0
2011 04 03  114     70      290      0    -999   B3.9   0  0  0  0  0  0  0
2011 04 04  113     83      340      1    -999   B3.3   0  0  0  1  0  0  0
2011 04 05  109     65      380      0    -999   B2.8   0  0  0  0  0  0  0
2011 04 06  117     56      230      1    -999   B3.1   3  0  0  0  0  0  0 

Format description:
Header lines of non-data information, header line starting with : or #, then 1 line per daily data.

See also ftp://ftp.sec.noaa.gov/pub/indices/old_indices/README

Latency 1 day
Update rate daily
Data source ftp://ftp.sec.noaa.gov/pub/indices/old_indices/ .

The file names in the directory are as described below.

  1. From 1994 to the previous year (i.e. to 2010 as of June 2011): yyyy_DSD.txt (where yyyy signifies a year).
  2. In the current year (i.e. in 2011 as of June 2011): yyyyQq_DSD.txt (where yyyy signifies a year and q the quarter of a year).
Notes  

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AUX_IMF_2_
Product identifier AUX_IMF_2_
Definition The Interplanetary Magnetic Field (IMF)
Application MSW_EULi2D, MSW_EUL_2F, MCO_SHAi2D, MCO_SHA_2F, MLI_SHAi2D, MIO_SHAi2D
Spatial representation Value of the IMF propagated to the Earth magnetosphere (1 global value per time stamp), provided in GSE and GSM format
Time representation Time series (1 hour averages)
Units nT for IMF, km/s for solar wind speed
Resolution 0.1 nT for IMF, 1 km/s for solar wind speed
Uncertainty Not provided
Quality indicator Sigma B; sigma v
Data format CDF
Variable Name  Description                     Type         Units

Epoch         Epoch Time                      CDF_EPOCH
YR            Year                            CDF_INT4
Day           Decimal Day (JAN 1=1)           CDF_INT4
HR            Decimal Hour                    CDF_INT4
Rot#          Bartels Rotation Number         CDF_INT4
IMF           ID for IMF spacecraft           CDF_INT4
PLS           ID for SW Plasma spacecraft     CDF_INT4
IMF_PTS       # fine time scale IMF points    CDF_INT4
PLS_PTS       # fine time scale plasma points CDF_INT4
ABS_B         Field Magnitude Avg.            CDF_REAL4     nT
F             Magnitude of avg. field vector  CDF_REAL4     nT
THETA_AV      Lat. Angle of AV.               CDF_REAL4     Deg
PHI_AV        Long. Angle of AV.              CDF_REAL4     Deg
BX_GSE        Bx, GSE                         CDF_REAL4     nT
BY_GSE        By, GSE                         CDF_REAL4     nT
BZ_GSE        Bz, GSE                         CDF_REAL4     nT
BY_GSM        By, GSM                         CDF_REAL4     nT
BZ_GSM        Bz, GSM                         CDF_REAL4     nT
SIGMA-ABS_B   sigma-ABS_B                     CDF_REAL4     nT
SIGMA-B       sigma-B                         CDF_REAL4     nT
SIGMA-Bx      sigma-Bx                        CDF_REAL4     nT
SIGMA-By      sigma-By                        CDF_REAL4     nT
SIGMA-Bz      sigma-Bz                        CDF_REAL4     nT
T             Plasma temperature              CDF_REAL4     K
N             Ion density                     CDF_REAL4     cm-3
V             Flow speed                      CDF_REAL4     km/s
PHI-V         Flow longitude                  CDF_REAL4     Deg
THETA-V       Flow latitude                   CDF_REAL4     Deg
Ratio         Alpha/prot. ratio               CDF_REAL4
Pressure      Flow pressure                   CDF_REAL4     nPa
SIGMA-T       sigma-T                         CDF_REAL4     K
SIGMA-N       sigma-n                         CDF_REAL4     cm-3
SIGMA-V       sigma-V                         CDF_REAL4     Km/s
SIGMA-PHI-V   sigma-phi-V                     CDF_REAL4     Deg
SIGMA-THETA-V sigma-theta-V                   CDF_REAL4     Deg
SIGMA-ratio   sigma-ratio                     CDF_REAL4
E             Electric Field                  CDF_REAL4     mV/m
Beta          Plasma beta                     CDF_REAL4
Mach_num      Alfen mach number               CDF_REAL4
Mgs_mach_num  Magnetosonic mach number        CDF_REAL4
PR-FLX_1      PROT Flux > 1 MEV               CDF_REAL8(cm2 ster s)-1
PR-FLX_2      PROT Flux > 2 MEV               CDF_REAL4(cm2 ster s)-1
PR-FLX_4      PROT Flux > 4 MEV               CDF_REAL4(cm2 ster s)-1
PR-FLX_10     PROT Flux >10 MEV               CDF_REAL4(cm2 ster s)-1
PR-FLX_30     PROT Flux >30 MEV               CDF_REAL4(cm2 ster s)-1
PR-FLX_60     PROT Flux >60 MEV               CDF_REAL4(cm2 ster s)-1
MFLX          M'SPH Flux Flag                 CDF_INT4
(6=No,1=All,-1=n/a)
R             Sunspot number (daily)          CDF_INT4
F10_INDEX     F10.7 index (daily)             CDF_REAL4
KP            Kp*10 (3-h)                     CDF_INT4
DST           Dst Index (1-h)                 CDF_INT4      nT
AE            AE-index (1-h)                  CDF_INT4      nT
AP_INDEX      ap-index (3-h)                  CDF_INT4      nT
AL_INDEX      AL-index (1-h)                  CDF_INT4      nT
AU_INDEX      AU-index (1-h)                  CDF_INT4      nT
PC_N_INDEX    PC(N) index                     CDF_REAL4
Data volume 2.2 MB / year
Latency ~ 1 month
Update rate ~ 1 month
Data source DTU based on information from

ftp://cdaweb.gsfc.nasa.gov/pub/istp/omni2/yyyy/omni2_h0_mrg1hr_yyyymmdd_v01.cdf
with yyyy =year, mm = month, dd =day

Notes For detailed description of the data see http://omniweb.gsfc.nasa.gov/html/omni2_doc.html

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AUX_IMF_2F
Product identifier AUX_IMF_2F
Definition The Interplanetary Magnetic Field (IMF) is described by the three component of the solar IMF provided in GSM coordinates.
Application IBIxTMS_2F, FACxTMS_2F, FAC_TMS_2F
Spatial representation Values at the L1 point (equilibrium between sun's and Earth's gravity force)
Time representation Time series (1 h averages )
Units nT for IMF
Resolution < 0.1 nT
Uncertainty Not provided
Quality indicator S is the status of the data (0 nominal data, 1-8 bad data, 9 no data).
Data volume ~65 kB / month
Data format Example file format for IMF 1h values (yyymm_ace_mag_1h.txt):
:Product: 201102_ace_mag_1h.txt
:Issued: 2011 Feb 21 1010 UT
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
# Please send comments and suggestions to SWPC.Webmaster@noaa.gov
#
# Magnetometer values are in GSM coordinates.
#
# Units: Bx, By, Bz, Bt in nT
# Units: Latitude  degrees +/-  90.0
# Units: Longitude degrees 0.0 - 360.0
# Status(S): 0 = nominal data, 1 to 8 = bad data record, 9 = no data
# Missing data values: -999.9
# Source: ACE Satellite - Magnetometer
#
#             Hourly Averaged Real-time Interplanetary Magnetic Field Values
#
#                Modified Seconds
# UT Date   Time  Julian   of the   ----------------  GSM Coordinates ---------------
# YR MO DA  HHMM    Day      Day    S     Bx      By      Bz      Bt     Lat.   Long.
#------------------------------------------------------------------------------------
2011 02 01  0000   55593       0    0     6.7    -3.5    -2.5     8.0   -18.2   332.3
2011 02 01  0100   55593    3600    0     0.1     3.4    -2.7     4.4   -38.2    87.8
2011 02 01  0200   55593    7200    0    -5.4     0.9     1.4     5.6    14.1   170.6
2011 02 01  0300   55593   10800    0     2.3    -4.9     0.8     5.5     8.9   295.0
2011 02 01  0400   55593   14400    0     3.4    -3.0    -8.3     9.5   -61.6   318.6

…

Format description:
header lines of non-data information, header line starting with : or #, then 1 line per 1 hourly data.
B is in GSM coordinates.
The format is '(i4,2i3,2x,2i2,2i8,i5,6f8.1)'.

See also ftp://ftp.sec.noaa.gov/pub/lists/ace2/README

Update rate Hourly data files are updated at 10 minutes past the hour.
Latency 10 min
Data source ftp://ftp.sec.noaa.gov/pub/lists/ace2/

in this directory file is named: yyyymm_ace_mag_1h.txt
Space Weather Prediction Center, NOAA

Notes  

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AUX_SWV_2F
Product identifier AUX_SWV_2F
Definition Solar wind velocity
Application IBIxTMS_2F, FACxTMS_2F, FAC_TMS_2F
Spatial representation Values at the L1 point (equilibrium between sun's and Earth's gravity force)
Time representation Time series (1 h averages )
Units km/s for solar wind velocity
Resolution 1 km/s
Uncertainty Not provided
Quality indicator S is the status of the data (0 nominal data, 1-8 bad data, 9 no data).
Data volume ~55 kB / month
Data format Example file format for 1h solar wind parameters (yyyymm_ace_swepam_1h.txt):
:Product: 201102_ace_swepam_1h.txt
:Issued: 2011 Feb 21 1010 UT
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
# Please send comments and suggestions to SWPC.Webmaster@noaa.gov
#
# Units: Proton density p/cc
# Units: Bulk speed km/s
# Units: Ion tempeture degrees K
# Status(S): 0 = nominal data, 1 to 8 = bad data record, 9 = no data
# Missing data values: Density and Speed = -9999.9, Temp. = -1.00e+05
# Source: ACE Satellite - Solar Wind Electron Proton Alpha Monitor
#
#   Hourly Averaged Real-time Bulk Parameters of the Solar Wind Plasma
#
#                Modified Seconds   -------------  Solar Wind  -----------
# UT Date   Time  Julian  of the          Proton      Bulk         Ion
# YR MO DA  HHMM    Day     Day     S    Density     Speed     Temperature
#-------------------------------------------------------------------------
2011 02 01  0000   55593       0    0        1.5      303.3     1.02e+05
2011 02 01  0100   55593    3600    0        2.7      330.4     1.24e+05
2011 02 01  0200   55593    7200    0        7.6      370.0     1.17e+05
2011 02 01  0300   55593   10800    0       18.2      364.6     5.29e+04
2011 02 01  0400   55593   14400    0        9.3      353.0     6.17e+04

…

Format description:
Header lines of non-data information, header line starting with : or #, then 1 line per 1 hour data.
The format is '(i4,2i3,2x,2i2,2i8,i5,2f11.2,e13.2E2)'

See also ftp://ftp.sec.noaa.gov/pub/lists/ace2/README

Update rate Hourly data files are updated at 10 minutes past the hour.
Latency 10 min
Data source ftp://ftp.sec.noaa.gov/pub/lists/ace2/

in this directory file is named: yyyymm_ace_swepam_1h.txt
Space Weather Prediction Center, NOAA

Notes  

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AUX_IRZ_2F
Product identifier AUX_IRZ_2F
Definition Ig/R12 - 12 month smoothed sunspot number
Application EEFxTMS_2F
Spatial representation 1 value describing the global state
Time representation Time series in 1 month steps
Units unitless
Resolution Sunspot number is given to 1 decimal point
Uncertainty N/A
Quality indicator N/A
Data volume < 10 kB / year
Data format ASCII table;
10,06,2011,

1,1958,12,2013,

165.7,
164.6,164.3,165.6,166.6,167.2,167.7,167.6,166.5,165.4,164.1,162.3,161.2
160.6,159.1,156.4,153.1,149.4,146.0,143.9,143.2,141.3,138.7,136.4,133.7
131.0,129.1,128.1,127.3,125.2,122.3,117.3,111.0,105.6,101.3,97.0,92.2
87.6,83.3,78.4,73.1,68.6,63.5,58.8,55.9,54.7,53.7,52.5,51.3
49.4,46.3,43.2,41.4,40.5,39.6,38.4,36.8,34.4,31.9,30.3,28.6

…

138.3,137.3,137.6,138.6,136.8,140.2,140.6,141.8,142.2,139.7,139.4,140.0,
141.3

200.1,
199.0,200.9,201.3,196.8,191.4,186.8,185.2,184.9,183.8,182.2,180.7,180.5,
178.6,176.9,174.5,169.2,165.1,161.4,155.8,151.3,146.3,141.1,137.2,132.5,
128.9,125.0,121.6,119.6,117.0,113.9,108.4,101.9, 97.2, 92.6, 87.2, 82.9,
 80.2, 74.8, 68.9, 64.3, 60.1, 55.8, 53.1, 52.5, 52.3, 51.4, 50.5, 48.7,
 45.2, 41.8, 39.8, 39.4, 39.2, 38.3, 36.8, 34.9, 32.7, 30.8, 30.0, 29.8,
…
 74.2, 75.8, 76.5, 76.3, 76.8, 78.0, 77.8, 76.8, 76.4, 76.2, 76.8, 77.2,
 76.9

Format description:

First line: day, month, year of the last update of this file, separated by
comma and line closed with comma
Second line: blank
Third line: start month, start year, end month, end year, separated by comma
and line closed with comma
Fourth line: blank
First block (IG index):
Line 1: monthly mean for the month preceding the start month followed by
comma
Following lines: Monthly values separated by comma or line break; some values
may contain whitespace after the comma
Last Line: monthly mean for the month after the end month

Blank line separates first and second block

Second block (RZ, sunspot number):
Line 1: monthly mean for the month preceding the start month followed by
comma
Following lines: Monthly values separated by comma or line break; some values
may contain whitespace after the comma
Last Line: monthly mean for the month after the end month

A negative Rz index means that the given index is the 13-months-running mean
of the solar radio flux (F10.7). The close correlation between (Rz)12 and
(F10.7)12 is used to derive the (Rz)12 indices.

An IG index of -111 indicates that no IG values are available for the
time period. In this case a correlation  function between (IG)12 and
(Rz)12 is used to obtain (IG)12.

See also

ftp://nssdcftp.gsfc.nasa.gov/models/ionospheric/iri/iri2012/00readme.txt

or

ftp://nssdcftp.gsfc.nasa.gov/models/ionospheric/iri/iri2012/irifun.for

Latency monthly
Update rate monthly
Data source ftp://nssdcftp.gsfc.nasa.gov/models/ionospheric/iri/iri2012/ig_rz.dat
Notes  

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AUX_DCB_2F
Product identifier AUX_DCB_2F
Definition GPS satellite differential code biases (dcb)
Application TECxTMS_2F
Spatial representation ordered by satellite number
Time representation 1 value/day
Units m
Resolution 0.001 ns
Uncertainty Not provided
Quality indicator Value for root mean scatter (RMS) of the daily solution
Data volume ~170 kB/day
Data format ASCII listing (others)
Example of dcb for day 1 of year 2008 ‘igsg0010.08i':

DCB values in nanoseconds, reference is Sum_of_SatDCBs = 0  COMMENT
DIFFERENTIAL CODE BIASES                                    START OF AUX DATA
    01    -3.381     0.024                                  PRN / BIAS / RMS
    02     5.561     0.022                                  PRN / BIAS / RMS
    03    -2.884     0.029                                  PRN / BIAS / RMS
    04    -1.670     0.029                                  PRN / BIAS / RMS
    05    -3.015     0.046                                  PRN / BIAS / RMS
    06    -2.499     0.017                                  PRN / BIAS / RMS
    07    -4.369     0.035                                  PRN / BIAS / RMS
    08    -2.979     0.032                                  PRN / BIAS / RMS
    09    -2.112     0.014                                  PRN / BIAS / RMS
    10    -3.982     0.060                                  PRN / BIAS / RMS
    11     2.015     0.018                                  PRN / BIAS / RMS
    12     2.162     0.039                                  PRN / BIAS / RMS
    13     1.655     0.044                                  PRN / BIAS / RMS
    14     0.257     0.007                                  PRN / BIAS / RMS
   

See also ftp://cddis.gsfc.nasa.gov/pub/reports/formats/ionex1.pdf

Latency 3-9 hours
Update rate daily
Data source ftp://cddis.gsfc.nasa.gov/pub/gps/products/ionex/,

NASA Goddard Space Flight Center

Notes  

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AUX_OBS_2_
Product identifier AUX_OBS_2_
Definition Geomagnetic Observatory Data are hourly means of the three components of the Earth's magnetic field measured at magnetic observatories, in geocentric (North-East-Centred) coordinates.
More details on data processing can be found in [RD-20].
Application Comprehensive Inversion chain products, MIO_SHAi2D, MMA_SHA_2F, MCO_VAL_2_, MIO_VAL_2_
Spatial representation Values at about one hundred magnetic observatories at the Earth's surface
Time representation Time series (1 hour averages)
Units nT
Resolution 0.1nT
Quality indicator The ‘Quality' channel identifies data as INTERMAGNET ‘Quasi-definitive' (available within three months) or ‘Definitive' (available after about one year). See intermagnet.org for details.
Data volume < 150Mb/yr
Data format ASCII listing (others)
Example:
#Observatory hourly mean values selected from WDC Edinburgh/INTERMAGNET
#File created on   6  2 2012
#obs  gc_lat    long      rad yyyy mm dd  UT N=-Btheta   E=Bphi    C=-Br
########################################################################
#AAE1
AAE1   8.974  38.767 6380.055 1998  1  1  0.5  35961.0      NaN    968.0
AAE1   8.974  38.767 6380.055 1998  1  1  1.5  35960.0    746.0    968.0
....
AAE1   8.974  38.767 6380.055 1998 12 31 22.5  35987.0    758.0   1036.0
AAE1   8.974  38.767 6380.055 1998 12 31 23.5  35988.0    756.0   1036.0
#ABK0
ABK0  68.218  18.817 6360.064 1998  1  1  0.5  11466.0    966.0  51282.0
ABK0  68.218  18.817 6360.064 1998  1  1  1.5  11467.0    965.0  51281.0
....

Format description:

Variable number of header lines each starting with ‘#'. Note,
embedded header lines expected, such as introducing a next station
(see example above)

Missing value flag = NaN

Column  Format  Description
======  ======  ===========
 1-4     s4     3-letter IAGA code, followed by digit
 5-12    f8.3   geocentric latitude (degrees)
13-20    f8.3   geocentric longitude (degrees)
21-39    f9.3   radius (km)
30-34    i5     year
35-37    i3     month
38-40    i3     day
41-45    f5.1   UT (hours)
46-54    f9.1   North (-B_theta) component (nT)
55-63    f9.1   East (B_phi) component (nT)
64-72    f9.1   Centered (-B_r) component (nT)
Update rate Every 3 months
Latency 3 months for quasi-definitive – 1-2 years for definitive
Availability BGS: ftp://ftp.nerc-murchison.ac.uk/geomag/Swarm/AUX_OBS/
Notes  

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AUX_OBSM2_
Product identifier AUX_OBSM2_
Definition Geomagnetic Observatory Data are 1 minute means of the three components of the Earth's magnetic field measured at magnetic observatories, in geocentric (North-East-Centred) coordinates.
Application Comprehensive Inversion chain products, MIO_SHAi2D, MMA_SHA_2F, MCO_VAL_2_, MIO_VAL_2_
Spatial representation Values at about one hundred magnetic observatories at the Earth's surface
Time representation Time series (1 minute averages)
Units nT
Resolution 0.1nT
Quality indicator The ‘Quality' channel identifies data as INTERMAGNET ‘Quasi-definitive' (available within three months) or ‘Definitive' (available after about one year). See intermagnet.org for details.
Data volume < 3Mb/day
Data format CDF

 

Field name Type Unit Contents
IAGA_code CDF_CHAR - IAGA three letter observatory identification code associated with datum
Quality CDF_CHAR - Data quality: D for definitive and Q for quasi-definitive
Timestamp CDF_EPOCH - Date and time
Longitude CDF_DOUBLE deg Longitude
Latitude CDF_DOUBLE deg Geocentric latitude
Radius CDF_DOUBLE m Radius
B_NEC CDF_DOUBLE nT Geocentric-north, east, and geocentric-down component of magnetic field. NaN values are used as placeholders for missing data
Update rate Daily
Latency 4-days, 1-, 3-, 6-months, 1-, 2- and 4-years
Availability BGS: ftp://ftp.nerc-murchison.ac.uk/geomag/Swarm/AUX_OBS/
Notes  

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AUX_OBSS2_
Product identifier AUX_OBSS2_
Definition Geomagnetic Observatory Data are 1 second values of the three components of the Earth's magnetic field measured at magnetic observatories, in geocentric (North-East-Centred) coordinates.
Application Comprehensive Inversion chain products, MIO_SHAi2D, MMA_SHA_2F, MCO_VAL_2_, MIO_VAL_2_
Spatial representation Values at about one hundred magnetic observatories at the Earth's surface
Time representation Time series (1 second values)
Units nT
Resolution 0.01nT
Quality indicator The ‘Quality' channel identifies data as INTERMAGNET ‘Quasi-definitive' (available within three months) or ‘Definitive' (available after about one year). See intermagnet.org for details.
Data volume < 50Mb/day
Data format CDF

 

Field name Type Unit Contents
IAGA_code CDF_CHAR - IAGA three letter observatory identification code associated with datum
Quality CDF_CHAR - Data quality: D for definitive and Q for quasi-definitive
Timestamp CDF_EPOCH - Date and time
Longitude CDF_DOUBLE deg Longitude
Latitude CDF_DOUBLE deg Geocentric latitude
Radius CDF_DOUBLE m Radius
B_NEC CDF_DOUBLE nT Geocentric-north, east, and geocentric-down component of magnetic field. NaN values are used as placeholders for missing data
Update rate Daily
Latency 4-days, 1-, 3-, 6-months, 1-, 2- and 4-years
Availability BGS: ftp://ftp.nerc-murchison.ac.uk/geomag/Swarm/AUX_OBS/
Notes  

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Level-2 processing chains

Figure 1: Level 2 chain

Figure 1: Level 2 chain

Figure 2: Level-2 processing chains which result in magnetic Level-2 products

Figure 2: Level-2 processing chains which result in magnetic Level-2 products

Figure 3: Level-2 processing chains that result in precise orbits and thermosphere Level-2 products

Figure 3: Level-2 processing chains that result in precise orbits and thermosphere Level-2 products

Figure 4: Level-2 processing chains related to the Earth environment and space weather (Cat-2 products)

Figure 4: Level-2 processing chains related to the Earth environment and space weather (Cat-2 products)

 

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