Purpose of the Swarm Product Data Handbook

The Swarm Product Data Handbook provides a detailed description of the Level 1b and Level 2 products. These products include Swarm magnetic field models, ionospheric and thermospheric products, and Precise Orbit Solutions including supporting information. The product handbook is intended to support the use of the products for further processing or application.

The Swarm Level 1b data products are the corrected and formatted output from each of the three Swarm satellites. By a complex assimilation of these individual satellite measurements into one set of products for the satellite constellation, the Level 2 Processor ensures a very significant improvement of the quality of the final scientific data products.

The definition and justification of Level 1b data is documented in [AD-5], Level 2 data and auxiliary products are documented in [AD-1] and [AD-2] of the ESA Swarm study under ESA contract no. 20969/07/NL/JA.

Download the following documents to learn more about the Swarm mission and its products.


Level 1B Product Descriptions:

Level 2 Product Descriptions:

Technical Notes:

Applicable documents

[AD-1] PDD - Product Definition Document (SWL2_SPT_PDD)

[AD-2] LPM - List and Description of Auxiliary Data and Prior Models Needed (SWL2-SPT-LPM)

[AD-3] ADD - Architecture Design Document (SWL2_SPT_ADD)

[AD-4] SWRD - Software Requirement Document (SWL2_SPT_SWRD)

[AD-5] Swarm Level 1b Product Definition (SW-RS-DSC-SY-0007)

[AD-6] Swarm ASM level 1B algorithms, Doc. No: AUT/ALGO1B/001, LETI, France

[AD-7] Swarm Level 1b Processor Algorithms Doc. No: SW-RS-DSC-SY-0002 National Space Institute, Technical University of Denmark

[AD-8] Vector Field Magnetometer for the Swarm Project, Users Manual, Doc. No: SW-MA-DTU-VF-5001 National Space Institute, Technical University of Denmark

[AD-9] Swarm CEFI-LP Level 1b Algorithms, Doc. No: SW-TN-IRF-EF-003, Swedish Institute of Space Physics

[AD-10] Swarm CEFI Level 1b Processor Definition, Doc. No: SW-TN-UOC-EF-003, University of Calgary, Canada

[AD-11] Accelerometer Instrument Level 1b Algorithms Definition Doc. No: SW-DF-VZL-AC-0001 VZLU, Czech Republic

[AD-12] Earth Explorer File Format Standards Doc. No: PE-TN-ESA-GS-0001 ESA ESTEC, Noordwijk, The Netherlands

[AD-13] Tailoring of File Format Standards to Swarm Mission Doc. No: SW-TN-ESA-GS-0074 ESA ESTEC, Noordwijk, The Netherlands

[AD-14] Swarm Level 0 Product Format, Doc. No: SWARM-GSEG-EOPG-05-001, ESA ESTEC, Noordwijk, The Netherlands

[AD-15] Swarm Level 2 Processing System, Product specification for L2 Products and Auxiliary Products, Doc. No: SW-DS-DTU-GS-0001 National Space Institute, Technical University of Denmark

[AD-16] L2 CAT-2 Processors Auxiliary Data Providers to Swarm PDGS Interface Control Document, Doc ID: SWAM-GSEG-EOPG-IC-011-0004

[AD-17] Statement of work (SoW) for the Development of the Swarm Level 2 Algorithms and Associated Level 2 Processing Facility, Doc. No: SW-SW-ESA-GS-0179

[AD-18] Preparation of the Swarm Level 2 Data Processing, Final Report Doc. No: SWL2-SPT-FR

[AD-19] Swarm PDS-IPF ICD Generic Interface Guidelines, Doc. No: SW-ID-ESA-GS-0001 ESA ESTEC, Noordwijk, The Netherlands

Reference documents

[RD-1] Swarm Level 1b Processor Characterisation and Calibration Data Base Doc. No: SW-TN-DSC-SY-0005 National Space Institute, Technical University of Denmark

[RD-2] Romans, L. J., Optimal combination of quaternions from multiple star cameras
Note: The definition of quaternions used in this description differs from the one used here. Our definition has the real part as fourth component, Romans uses a definition with the real part as first component. http://www.iers.org/

[RD-3] Swarm Level 0 Products, doc. no: SW.IF.EAD.GS.00017, EADS Astrium, Friedrichshafen, Germany

[RD-4] RINEX: The Receiver Independent Exchange Format Version 3.00, http://igscb.jpl.nasa.gov/igscb/data/format/rinex300.pdf by Werner Gurtner, Astronomical Institute, University of Bern Dated: 2006-12-19

[RD-5] The Extended Standard Product 3 Orbit Format (SP3-c), http://igscb.jpl.nasa.gov/igscb/data/format/sp3c.txt by Steve Hilla, National Geodetic Survey, NOAA, USA Dated: 12 February 2007

[RD-6] Olsen, N., T. J. Sabaka, and F. Lowes: New Parameterization of External and Induced Fields in Geomagnetic Field Modeling, and a Candidate Model for IGRF 2005, Earth, Planets and Space, 57, 1141-1149, 2005

[RD-7] Finlay, C. C. et al., International Geomagnetic Reference Field - the eleventh generation, Geophys. J. Int., 183, 1216-1230, doi: 10.1111/j.1365-246X.2010.04804.x., 2010

[RD-8] Olsen, N., H. Lühr, T. J. Sabaka, M. Mandea, M. Rother, L. Tøffner-Clausen and S. Choi, CHAOS-a model of the Earth's magnetic field derived from CHAMP, Ørsted, and SAC-C magnetic satellite data, Geophys. J. Int., 166, doi: 10.1111/j.1365-246X.2006.02959.x, 2006

[RD-9] http://core2.gsfc.nasa.gov/CM/

[RD-10] Wardinski, I., and R. Holme (2006), A time-dependent model of the Earth's magnetic field and its secular variation for the period 1980–2000, J. Geophys. Res., 111, B12101, doi: 10.1029/2006JB004401 BibTex

[RD-11] Lesur, V., I. Wardinski, M. Rother, and M. Mandea, GRIMM - The GFZ Reference Internal Magnetic Model based on vector satellite and observatory data, Geophys. J. Int., doi:10.1111/j.1365-246X.2008.03724.x, 2008

[RD-12] Maus, S., M. Rother, C. Stolle, W. Mai, S. Choi, H. Lühr, D. Cooke, and C. Roth, Third generation of the Potsdam Magnetic Model of the Earth (POMME), Geochem. Geophys. Geosyst., 7, Q07008, doi:10.1029/2006GC001269, 2006

[RD-13] Maus, S., H. Lühr, M. Rother, K. Hemant, G. Balasis, P. Ritter, and C. Stolle, Fifth-generation lithospheric magnetic field model from CHAMP satellite measurements, Geochem. Geophys Geosyst., 8, Q05013, doi:10.1029/2006GC00152, 2007

[RD-14] Kuvshinov, A., and N. Olsen, A global model of mantle conductivity derived from 5 years of CHAMP, Ørsted, and SAC-C magnetic data, Geophys. Res. Lett., 33, L18301, doi:10.1029/2006GL027083.3, 2006

[RD-15] Maus, S., Rother, M., Hemant, K., Stolle, C., Lühr, H., Kuvshinov, A., and Olsen, N., Earth's lithospheric magnetic field determined to spherical harmonic degree 90 from CHAMP satellite measurements, Geophys. J. Int., 164, 319-330, doi: 10.1111/j.1365-246X.2005.02833.x, 2006

[RD-16] Manoj C., A. Kuvshinov, S. Maus and H. Lühr, Ocean circulation generated magnetic signals, Earth, Planets and Space, 58, 429-437, 2006

[RD-17] Lühr, H.; Maus, S.: Solar cycle dependence of quiet-time magnetospheric currents and a model of their near-Earth magnetic fields. Earth Planets and Space, 62 (No. 10), 843-848, 2010

[RD-18] Olsen, N., Sabaka, T. J. and Gaya-Pique, L. R., Study of an Improved Comprehensive Magnetic Field Inversion Analysis for Swarm. Final report to ESA study with contract number 19690/06/NL/CB

[RD-19] Swarm GPSR TE-12 Instrument L1b Algorithms Definition Doc. No: SW-TN-SES-GP-0018 Saab Space AB, Sweden

[RD-20] Macmillan S and Olsen N (2013), "Observatory data and the Swarm mission", Earth, Planets and Space. Vol. 65(11), pp. 1355-1362. DOI: 10.5047/eps.2013.07.011 BibTex

Acronyms and abbreviations

Download the list of acronyms and abbreviations related to the Swarm mission.