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    24-Jul-2014
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MIPAS Data Formats Products
Records
2 MDSR per MDS 1 forward sweep 1 reverse sweep
2 MDSRs per MDS 1 forward sweep 1 reverse sweep
LOS calibration GADS
Spectral Lines MDS
P T Retrieval MW ADS
VMR Retrieval Parameters GADS
P t Retrieval GADS
Framework Parameters GADS
Processing Parameters GADS
Inverse LOS VCM matrices MDS
General GADS
Occupation matrices for vmr#1 retrieval MDS
MDS2 -- 1 mdsr forward sweep 1 mdsr reverse
Occupation matrices for p T retrieval MDS
General GADS
Priority of p T retrieval occupation matices
P T occupation matrices ADS
MIP_NLE_2P SPH
Summary Quality ADS
Instrument and Processing Parameters ADS
Microwindows occupation matrices for p T and trace gas retrievals
Scan information MDS
Level 2 product SPH
MDS1 -- 1 mdsr forward sweep 1 mdsr reverse sweep
H2O Target Species MDS
P T and Height Correction Profiles MDS
Continuum Contribution and Radiance Offset MDS
Structure ADS
Summary Quality ADS
Residual Spectra mean values and standard deviation data ADS
PCD Information of Individual Scans ADS
Instrument and Processing Parameters ADS
Microwindows Occupation Matrices ADS
Scan Information MDS
1 MDSR per MDS
Scan Geolocation ADS
Mipas Level 1B SPH
Calibrated Spectra MDS
Structure ADS
Summary Quality ADS
Offset Calibration ADS
Scan Information ADS
Geolocation ADS (LADS)
Gain Calibration ADS #2
Gain Calibration ADS #1
Level 0 SPH
DSD#1 for MDS containing VMR retrieval microwindows data
DSD for MDS containing p T retrieval microwindows data
VMR #1 retrieval microwindows ADS
P T retrieval microwindows ADS
1 MDSR per MDS
VMR profiles MDS (same format as for MIP_IG2_AX)
Temperature profiles MDS (same format as for MIP_IG2_AX)
Pressure profile MDS (same format as for MIP_IG2_AX)
P T continuum profiles MDS (same format as for MIP_IG2_AX)
GADS General (same format as for MIP_IG2_AX)
Level 0 MDSR
Values of unknown parameters MDS
Computed spectra MDS
Jacobian matrices MDS
General data
Data depending on occupation matrix location ADS
Microwindow grouping data ADS
LUTs for p T retrieval microwindows MDS
GADS General
P T retrieval microwindows ADS
ILS Calibration GADS
Auxilliary Products
MIP_MW1_AX: Level 1B Microwindow dictionary
MIP_IG2_AX: Initial Guess Profile data
MIP_FM2_AX: Forward Calculation Results
MIP_CS2_AX: Cross Sections Lookup Table
MIP_CS1_AX: MIPAS ILS and Spectral calibration
MIP_CO1_AX: MIPAS offset validation
MIP_CL1_AX: Line of sight calibration
MIP_CG1_AX: MIPAS Gain calibration
MIP_SP2_AX: Spectroscopic data
MIP_PS2_AX: Level 2 Processing Parameters
MIP_PS1_AX: Level 1B Processing Parameters
MIP_PI2_AX: A Priori Pointing Information
MIP_OM2_AX: Microwindow Occupation Matrix
MIP_MW2_AX: Level 2 Microwindows data
MIP_CA1_AX: Instrument characterization data
Level 0 Products
MIP_RW__0P: MIPAS Raw Data and SPE Self Test Mode
MIP_NL__0P: MIPAS Nominal Level 0
MIP_LS__0P: MIPAS Line of Sight (LOS) Level 0
Level 1 Products
MIP_NL__1P: MIPAS Geolocated and Calibrated Spectra
Level 2 Products
MIP_NLE_2P: MIPAS Extracted Temperature , Pressure and Atmospheric Constituents Profiles
MIP_NL__2P: MIPAS Temperature , Pressure and Atmospheric Constituents Profiles
Glossary
References
Glossaries of technical terms
Level 2 processing
Pointing
Miscellaneous hardware and optical terms
Spectrometry and radiometry
Data Processing
Alphabetical index of technical terms
Frequently Asked Questions
The MIPAS Instrument
Inflight performance verification
Instrument characteristics and performances
Preflight characteristics and expected performances
Subsystem description
Payload description and position on the platform
MIPAS Products and Algorithms
Data handling cookbook
Characterisation and calibration
Calibration
Latency, throughput and data volume
Auxiliary products
Level 2
Instrument specific topics
Algorithms and products
Level 2 products and algorithms
Products
The retrieval modules
Computation of cross-sections
Level 1b products and algorithms
Products
Calculate ILS Retrieval function
Level 1a intermediary products and algorithms
Product evolution history
Definition and convention
MIPAS Products User Guide
Image gallery
Further reading
How to use MIPAS data?
Summary of applications and products
Peculiarities of MIPAS
Geophysical coverage
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2.6.2 Level 2

Summary of input / output data files

The MIPAS Level 2 processing input / output data files are summarized in the following table.

Table 2.11 Summary of Level 2 Processing I/O Data
Level 2 I/O Data
File No. File Identifier Description Size [Bytes] Update Period Comments
Level 1 B Data Product (Input)
  MIP_NL__1P Level 1 B data product 303.1 M 100.6 min  
Auxiliary Data (Input)
  MIP_PS2_AX Processing parameters data file 10 k 1 month  
  MIP_MW2_AX Microwindows data file 1.6 M several months  
  MIP_SP2_AX Spectroscopic data file 200 M several months  
  MIP_IG2_AX Initial guess profile data file 3 M several months  
  MIP_FM2_AX Forward calculation results file 95 M several months  
  MIP_OM2_AX Microwindows occupation matrices file 25 M several months  
  MIP_CS2_AX Cross section lookup tables file 450 M several months  
  MIP_PI2_AX A priori pointing information file 160 k several months  
Meteorology Data (Input)
  AUX_ECF_AX ECMWF meteorological forecast data TBD 6 hours  
  AUX_ECA_AX ECMWF meteorological analysis data TBD 6 hours  
Annotation Data (referenced in Level 2 products)
  MIP_NL__1P Level 1 B input product      
  MIP_PS2_AX Processing parameters data file      
  MIP_MW2_AX Microwindows data file      
  MIP_SP2_AX Spectroscopic data file      
  MIP_IG2_AX Initial guess profile data file      
  MIP_FM2_AX Forward calculation results file      
  MIP_OM2_AX Microwindows occupation matrices file      
  MIP_CS2_AX Cross section lookup tables file      
  MIP_PI2_AX A priori pointing information file      
  deleted
  AUX_ECF_AX ECMWF meteorological forecast data      
  AUX_ECA_AX ECMWF meteorological analysis data      
Level 2 Data Products (Output)
  MIP_NL__2P Level 2 data product 9 M 100.6 min  
  MIP_NLE_2P Level 2 NRT / Meteo product 1 M 100.6 min  

 

Auxiliary data

The MIPAS Level 2 auxiliary data cover the following products:

  • Processing parameters data file
  • Microwindows data file
  • Spectroscopic data file
  • Initial guess profile data file
  • Forward calculation results file
  • Microwindows occupation matrices file
  • Cross sections lookup tables file
  • A priori pointing information file
The data fields for these products are presented in the following sections.

Processing parameters data file

Product ID: MIP_PS2_AX

This file contains a complete list of input parameters, settings and switches that control the execution of the Level 2 processor.

Microwindows data file

Product ID: MIP_MW2_AX

This file describes a set of spectral intervals to be extracted from the Level1B data for the subsequent retrieval steps. For each spectral interval (microwindow) the valid altitude range, information on spectral range of continuum, sensitivity and correlation parameters, NLTE quantifiers, NESR, and contributions to the systematic/random retrieval error is given.

Spectroscopic data file

Product ID: MIP_ SP2_AX

This input data is used in forward calculation for the simulation of atmospheric spectra. Spectroscopic data are provided for each microwindow as defined in the microwindows data file.

Initial guess profile data file

Product ID: MIP_IG2_AX

This product includes initial guess profiles of pressure, temperature, VMR and continuum for different latitudes.

Forward calculation results file

Product ID: MIP_FM2_AX

This file contains initial guess data copied from an initial guess data file and the results of forward calculations based on this data.

Microwindow occupation matrices file

Product ID: MIP_OM2_AX

This files contains pre-computed occupation matrices for p,T and VMR retrievals for different latitude bands and a fixed altitude grid. Also occupation matrices to be used in cases of missing or corrupted spectral bands are contained.

Cross sections lookup table file

Product ID: MIP_CS2_AX

This file contains absorption cross section lookup tables for a set of microwindows.

A priori pointing information

Product ID: MIP_PI2_AX

This file contains pre-computed externally provided pointing covariance data.

ECMWF Meteo Products

The ECMWF Meteo Products contain meteorological data (geopotential profiles, relative humidity profiles, temperature profiles and ozone profiles (TBC), that is used to improve the initial guess data in p,T and VMR retrievals. A description of these products is given in [RD ].

The S/W makes use of GRIB encoded data files for geopotential height, relative humidity profiles, temperature profiles and ozone profiles. The I/F to the GRIB files are provided by an ESTEC provided CFI.

Variations in Level 2 product size

The Level 2 product size estimate corresponds to a nominal measurement scenario, with 16sweep measurements per elevation scan at high spectral resolution, and a duration of ca. 71s per scan. Furthermore, it has been assumed that ca. 10% of the available measurement time is used for offset calibration measurements (see also [RD ]) and that no other dedicated calibration measurements are performed. The corresponding measurement time available for scene measurements will allow to complete ca. 75 elevation scans per orbit.

It should be noted that the number of retrieved quantities typically varies linearly with the number of scene measurements in an individual elevation scan whereas the number of elevation scans per orbit is roughly inversely proportional to the number of height steps. As a consequence, no significant variations are expected in the size of the p, T and trace gas VMR or concentration profile data per orbit volume. However, the overall size of the data products may vary significantly for scenarios with different height step numbers as the sizes of the covariance matrices typically vary with the square of the number of vertical grid points. In addition, some variations in product size will occur for different numbers of elevation scans per orbit, each contributing with a number of data set records in the MDS fields and with various annotation data. Moreover, some (minor) differences in product size may be expected between Level 2 NRT and Level 2 off-line data sets, depending on the specific algorithms used in the two processing chains. These algorithms may, for instance, use different gridding schemes to represent the p, T and VMR profile and covariance data.


Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry