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Description

This data set contains global gridded, monthly solutions of the sea level equation (gravitational-rotational-deformational GRD components) using surface mass data from the GRACE and GRACE Follow-On (G/GFO) satellite missions, beginning in April 2002. The sea level components are provided for separate land domains to allow users the local contributions from various ice melt sources (e.g., Greenland, Antarctica, mountain glaciers), as well as non-glaciated land regions. The full record for each component is given in a separate netCDF file, and includes gridded data of radial deformation, geoid height and relative sea level, as well as timeseries of global mean barystatic sea level. The data are frequently updated as new monthly observations are acquired by the GFO mission.
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These data are based on the gridded JPL CRI-filtered mascons (e.g., https://doi.org/10.5067/TEMSC-3JC634), and thus inherit all processing steps from those fields. For more information on GRD definitions and related terminology, please refer to Gregory et al., 2019 (https://doi.org/10.1007/s10712-019-09525-z).

Product Summary

Platforms
GRACE-FO ,
GRACE
Instruments
GRACE-FO MWI ,
GRACE INTERFEROMETER
Spatial Extent

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

Spatial Resolution
0.5 Decimal Degrees x 0.5 Decimal Degrees
Geographic Region
GLOBAL
Coordinate System
GEODETIC
Granule Spatial Representation
GEODETIC
Temporal Extent
2002-04-16 to Present
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC) ,
GRACE Tellus, Jet Propulsion Laboratory, NASA (NASA/JPL/GRACE-TELLUS-0001)
Concept ID
C3560326548-POCLOUD
Data State
ACTIVE
Number of Files/Granules
5
Processing Level
4
Science Keywords
Sea Level Rise ,
Sea Level Anomaly ,
Geoid Characteristics

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

Felix Landerer, D. W. (2025). GRACE/GRACE-FO Level-4 Monthly Gravitational-Rotational-Deformation version 01 from NASA MEaSUREs HOMaGE [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/HMOGD-4JM01 Date Accessed: 2025-12-14

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
all_land Regional Mask used as source for sea level solver N/A float N/A N/A 1
Barystatic Global Mean Barystatic Sea Level meter float -99999 -0.016338713467121 to 0.045224390923977 1
Geoid Rotational feedback: False; Reference Frame: CM meters float -99999 -0.10811601579189 to 0.024638038128614 1
land_mask Land Mask that was used with the CRI filter N/A float N/A N/A 1
lat latitude degrees_north float N/A -89.75 to 89.75 1
lat_bounds latitude values at the north and south bounds of each pixel degrees_north float N/A N/A 1
LOD length-of-day seconds float -99999 0 0 1
lon longitude degrees_east float N/A 0.25 to 359.75 1
lon_bounds longitude values at the west and east bounds of each pixel degrees_east float N/A N/A 1
Rad Rotational feedback: False; Reference Frame: CM meters float -99999 -0.048046261072159 to 0.21539016067982 1
RSL Rotational feedback: False; Reference Frame: CM meters float -99999 -0.29503938555717 to 0.10174211859703 1
time time days since 2002-01-01T00:00:00Z float N/A N/A 1
time_bounds time bounds for each time value, i.e. the first day and last day included in the monthly solution days since 2002-01-01T00:00:00Z float N/A N/A 1
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