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Description

Glacial isostatic adjustment (GIA) is an ongoing geophysical process and is measured by gravimetry satellites like GRACE and GRACE-FO. To isolate signals of contemporary surface mass loss in the cumulative satellite gravimetry measurements, contemporary GIA rates are computed and subtracted from the satellite gravimetry observations. The GIA correction models provided here are filtered such that they are compatible with Level-3 post-processing filters applied to GRACE(-FO) data as indicated in the [product_id]. In this way, user can effectively assess the impact of the applied GIA correction, and substitute different GIA models should that be desired. This GIA dataset is mapped into 0.5-degree global grid compatible with the JPL Mascon solution, provided in netCDF format.

Product Summary

Platforms
GRACE
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
0.5 Decimal Degrees x 0.5 Decimal Degrees
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1900-01-01 to 2100-12-31
Data Partner
GRACE Tellus, Jet Propulsion Laboratory, NASA (NASA/JPL/GRACE-TELLUS-0001) ,
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)
Concept ID
C2689796236-POCLOUD
Data State
COMPLETE
Number of Files/Granules
3
Processing Level
3
Published
Updated
Science Keywords
Gravity Anomalies

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

NASA Jet Propulsion Laboratory (JPL). (2019). TELLUS GRACE Level-3 0.5-degree Glacial Isostatic Adjustment v1.0 datasets produced by JPL [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/GRGIA-05J10 Date Accessed: 2026-04-21

Documents

Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
GIA_geoid_rate_3degJPL_MSCN GIA geoid rate and uplift rate coefficients for a compressible Earth,computed (by Geruo A) using the ICE5G ice history and VM2 viscosity profile. The normalization of the harmonics, for both the geoid rate and the uplift rate,is the conventional normalization used for the Stokes coefficients of the geoid.From: A, G., J. Wahr, and S. Zhong,"Computations of the viscoelastic response of a 3-D compressible Earth to surface loading: an application to Glacial Isostatic Adjustment in Antarctica and Canada", submitted to Geophys. J. Int. m/year double -99999 -0.0003 to 0.002 1 N/A
GIA_mass_rate_3degJPL_MSCN GIA geoid rate and uplift rate coefficients for a compressible Earth,computed (by Geruo A) using the ICE5G ice history and VM2 viscosity profile. The normalization of the harmonics, for both the geoid rate and the uplift rate,is the conventional normalization used for the Stokes coefficients of the geoid.From: A, G., J. Wahr, and S. Zhong,"Computations of the viscoelastic response of a 3-D compressible Earth to surface loading: an application to Glacial Isostatic Adjustment in Antarctica and Canada", submitted to Geophys. J. Int. m/year double -99999 -0.02 to 0.06 1 N/A
lat latitude value at each pixel degrees_north double N/A -89.75 to 89.75 1 N/A
lat_bounds latitude values at the north and south bounds of each pixel degrees_north double N/A N/A 1 N/A
lon longitude value at each pixel degrees_east double N/A 0.25 to 359.75 1 N/A
lon_bounds longitude values at the west and east bounds of each pixel degrees_east double N/A N/A 1 N/A
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