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GRACE Product Specification Document Revision: 4.6 |
Provides a detailed description of data products at all levels for the GRACE mission. |
| GRACE Monthly SDS Newsletter
Revision: N/A |
Monthly newsletter provided by the GRACE Science Data System describing science relevant events on the GRACE space crafts and statistics on L0, L1 and L2 product generation. |
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GRACE Documentation
General Documentation
Level 1B Documentation
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GRACE Level 1B Data Product User Handbook JPL D-22027 Revision: 1.3 |
Provides a comprehensive description of the content and format of the Level 1B data. |
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AOD1B Product Description Document Revision: 6.1 |
Describes the atmospheric and ocean de-aliasing product (AOD1B) and the barotropic ocean model output (OCN1B). |
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Algorithm Theoretical Basis Document for GRACE Level 1B Data Processing Revision: 1.2 |
Describes the algorithms producing the main quantities on the Level 1B data. |
Level 2 Documentation
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GFZ Level-2 Processing Standards Document for Product Release 06 Revision: 0.0 |
Describes the processing standards, models, and parameters adopted for the Level-2 Product Release 06 generated at GFZ. |
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CSR Level-2 Processing Standards Document for Product Release 06 Revision: 5.0 |
Describes the processing standards, models, and parameters adopted for the Level-2 Product Release 06 generated at CSR. |
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JPL Level-2 Processing Standards Document for Product Release 06 Revision: 6.0 |
Describes the processing standards, models, and parameters adopted for the Level-2 Product Release 06 generated at JPL. |
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Level-2 Gravity Field Product User Handbook Revision: 4.0 |
Provides a description of the Earth gravity field estimates provided by the Level 2 processing. |
Ancillary Documentation
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Author: J.B. Thomas |
Describes a dual one-way approach for extracting "high-rate" k-band intersateliite biased range measurements. |
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Optimal combination of quaternions from multiple star cameras Author: L.J. Romans |
Describes a procedure for optimally combining quaternions measured simultaneously from different aligned star cameras. |
L1 and L2 Release Notes
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Release Notes for CSR RL06 GRACE L2 products Author: S. Bettadpur |
Gives additional information on CSR RL06 GRACE L2 products (not contained in CSR RL05 processing standards document). |
| Author: C. Dahle | Gives additional information on GFZ RL06 GRACE L2 products (not contained in GFZ RL05 processing standards document). |
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Release Notes for JPL RL06 GRACE L2 products Author: Christopher M. McCullough, David N. Wiese, & Dah-Ning Yuan |
Gives additional information on JPL RL06 GRACE L2 products (not contained in JPL RL05 processing standards document). |
Technical Notes
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GRACE Technical Note #01: Sequence of Events (SOE) File Updated Daily |
Provides a record of changes of the state of a specific satellite sensor or satellite event, which may alter the processing parameters used for the L1B processing. This file is updated on a daily basis. |
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GRACE Technical Note #02: ACC blases Author: S. Bettadpur |
Provides recommendations for a-priori bias & scale parameters for Level 1B ACC data. |
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GRACE Technical Note #03: Sequence of Events (SOE) format description Author: G. Kruizinga |
Provides a detailed description and format information on how the SOE file is organized. |
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Authors: S. Bettadpur, F. Flechtner, R. Schmidt |
Provides detailed guidelines for usage on GFZ RL03 and JPL RL02 GRACE models. |
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GRACE Technical Note #06: Impact of change in AOD1B on RL04 monthly GSM Author: S. Bettadpur |
Discusses the impact on GRACE level 2 products of the reprocessing of June 2006 through September 2007 GRACE AOD1B data. It is recommended that the following products be replaced with the re-processed ones: AOD1B, GSM-2, GAC-2, and GAD-2. |
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Authors: M. Cheng and J.Ries
Date: Jan. 19, 2020 |
Use these estimates to replace the C20 values from the GSM files of the GRACE RL06 products only. These estimates are not intended to be used with the GRACE RL05 or earlier products.
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| GRACE Technical Note #12: Convert Global Mean OBP -> Global Mean Ocean Mass | This calculation uses AOD1B 'GAC' fields, and integrates over the ocean-area only; due to the definition of 'GAC' (see AOD1B handbook for further details), the resulting mean value effectively represents 'mean atmospheric mass over the global ocean' for each time step. |
| GRACE Technical Note #13a: degree-1 (geocenter) gravity coefficients from CSR |
This file contains monthly estimates of degree-1 gravity coefficients for the GRACE Release-06 data, based on ocean and atmospheric models and GRACE coefficients for degrees 2 and higher.
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| GRACE Technical Note #13b: degree-1 (geocenter) gravity coefficients from GFZ | This file contains monthly estimates of degree-1 gravity coefficients for the GRACE Release-06 data, based on ocean and atmospheric models and GRACE coefficients for degrees 2 and higher. |
| GRACE Technical Note #13c: degree-1 (geocenter) gravity coefficients from JPL | This file contains monthly estimates of degree-1 gravity coefficients for the GRACE Release-06 data, based on ocean and atmospheric models and GRACE coefficients for degrees 2 and higher. |
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GRACE Technical Note #14: NASA GSFC SLR C20 and C30 solutions Authors: B.D. Loomis and K.E. Rachlin |
This file contains SLR-derived C20 and C30 values for replacing GRACE/GRACE-FO GSM Values prior to MJD 56006 use 5 satellites: LAGEOS-1/2, Stella, Starlette, AJISAI Values beginning on MJD 56006 use 7 atellites: LARES and Larets added C30 values are not provided prior to MJD 56006 Estimated parameters for both 5 and 7-satellite configurations: 5x5+C61,S61
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