Author: Dah-Ning Yuan
Date: May 22, 2019
The GRACE Follow-On Level-2 Gravity Field Product User Handbook provides a description of the Earth gravity field estimates provided by the Level-2 processing. In particular, the relationship of the abstract concept of the geopotential, its instantaneous and mean values, and the specific set of GRACE Follow-On gravity estimates is described in this document.
This document serves as a record of the processing standards, models & parameters adopted for the creation of the Level-2 gravity field data products by the GRACE FollowOn (GRACE-FO) Science Data System component at The University of Texas Center for Space Research (UTCSR).
This document serves as a record of the processing standards, models & parameters adopted for the generation of the Level-2 gravity field data products by the GRACE-FO Science Data System component at the GFZ German Research Centre for Geosciences.
This document serves as a record of the processing standards, models & parameters adopted for the generation of the Level-2 gravity field data products by the GRACE Follow-On Science Data System component at NASA Jet Propulsion Laboratory of the California Institute of Technology (JPL).
This Handbook is designed to guide both experienced and beginner users in understanding and using Level-3 GRACE and GRACE-FO data products.The three main objectives of this document are to, 1) provide an overview of the GRACE-FO mission including the instrument design, science data processing, and calibration and validation procedures, 2) provide a description of the available Level-3 GRACE-FO data products and featured science and applications of Level-3 GRACE and GRACE-FO data, and 3) provide a set of step by step, reproducible use cases intended to serve as a reference for users who are interested in GRACE-FO Level-3 data products.
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.
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.
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