JPL GRACE/GRACE-FO Gridded-AOD1B Water-Equivalent-Thickness Surface-Mass Anomaly RL06 dataset for Tellus Level-3 1.0-degree grid
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DOI10.5067/GGAOD-3GJ60
Short NameGRC-GFO_GRIDDED_AOD1B_JPL_1-DEG_RL06
DescriptionGRACE non-tidal high-frequency atmospheric and oceanic mass variation models are routinely generated at GFZ as so-called Atmosphere and Ocean De-aliasing Level-1B (AOD1B) products (in terms of corresponding spherical harmonic geopotential coefficients) to be added to the background static gravity model during GRACE monthly gravity field determination. AOD1B products are 3-hourly series of spherical harmonic coefficients up to degree and order 180 which are routinely provided to the GRACE Science Data System and the user community with only a few days time delay. These products reflect spatio-temporal mass variations in the atmosphere and oceans deduced from an operational atmospheric model and corresponding ocean dynamics provided by an ocean model. The variability is derived by subtraction of a long-term mean of vertical integrated atmospheric mass distributions and a corresponding mean of ocean bottom pressure as simulated with the ocean model. For further details, please refer to https://www.gfz-potsdam.de/en/aod1b/. The Gridded AOD1B data sets provided here contain the monthly mean AOD1B data in geolocated gridded form, smoothed or spatially aggregated to be consistent with the GRACE and GRACE-FO Tellus Level-3 data products of land and/or ocean mass anomalies. With these gridded AOD1B Level-3 products, users can remove or add the effects of the modeled mean monthly atmospheric and ocean bottom pressure change (e.g., to compare different models).
VersionRL06
Dataset TypeOPEN
MeasurementSOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY ANOMALIES
Processing Level3
CoverageRegion: Global
Northernmost Latitude: 89.5 degrees
Southernmost Latitude: -89.5 degrees
Westernmost Longitude: 0 degrees
Easternmost Longitude: 360 degrees
Time Span: 2002-Apr-15 to Present
Granule Time Span: 2002-Apr-04 to 2020-Jun-01
ResolutionSpatial Resolution: 1 degrees (Latitude) x 1 degrees (Longitude)
Temporal Resolution: 1 Month
ProjectionType: Gridded
Detail:
Ellipsoid: WGS 84
Latency3600 hours
Platform/Sensor
GRACE-FO
Platform
Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO)
Orbit Period: -1 minutes
Inclination Angle: 89 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
GRACE-FO ACC
SENSOR
Name: GRACE-FO SuperSTAR Accelerometer (GRACE-FO ACC)
Swath Width: -1 km
Description: The accelerometer, located at the center of mass of each satellite, measures all non-gravitational forces acting on each satellite. These forces include air drag, solar radiation pressure, and attitude control activator operation.

GRACE-FO
Platform
Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO)
Orbit Period: -1 minutes
Inclination Angle: 89 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
GRACE-FO KBR
SENSOR
Name: GRACE-FO K-Band Ranging System (GRACE-FO KBR)
Swath Width: -1 km
Description: This instrument precisely measures the changes in the separation between the two GRACE satellites using phase tracking of K- and Ka-band signals sent between the two satellites

GRACE-FO
Platform
Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO)
Orbit Period: -1 minutes
Inclination Angle: 89 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
GRACE-FO SCA
SENSOR
Name: GRACE-FO Star Camera Assembly (GRACE-FO SCA)
Swath Width: -1 km
Description: The SCA (Star Camera Assembly) consists of three temperature controlled CCD star cameras mounted to the accelerometer, along with the respective baffle assemblies. The STR delivers its video frames to the OBC, which then computes the attitude quaternions. The OBC also acts as the power and command/control interface to the STR. Once switched on and initialized, the STR proceeds with automatic coarse attitude acquisition and then on to fine attitude derivation.

ProjectGRACE Follow-On (GRACE-FO)
Data ProviderCreator: Felix Landerer
Release Place: JPL
Release Date: 2020-Mar-31
Resource: Landerer F. W. and S. C. Swenson, 2012, Accuracy of scaled GRACE terrestrial water storage estimates. Water Resources Research, Vol 48, W04531, 11 PP, doi:10.1029/2011WR011453
Keyword(s)TELLUS, GRACE, GRACE-FO, LWET, Gravity, JPL, RL06, AOD1B
Persistent IDPODAAC-GGAOD-3GJ60
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
User's Guide
AOD1B_PDDhttps://podaac-tools.jpl.nasa.gov/drive/files/allData/grace/docs/AOD1B_PDD_RL06_v6.1.pdf
AOD1B Product Description Document for Product Release 06
Project Materials
GRACE Data Availability Timetablehttps://podaac-tools.jpl.nasa.gov/drive/files/allData/tellus/L3/docs/GRACE_GRACE-FO_Months_RL06.pdf
GRACE monthly data integration range
Additional Sites
GRACE-FO Projecthttps://gracefo.jpl.nasa.gov/
GRACE-FO Project Website
GRACE-FO Infohttps://podaac.jpl.nasa.gov/GRACE-FO
PODAAC GRACE-FO Mission-Page
FAQs
PO.DAAC Forum Pagehttps://podaac.jpl.nasa.gov/forum/viewforum.php?f=27
PO.DAAC Forum Page
Citation Felix Landerer. 2020. JPL GRACE/GRACE-FO Gridded-AOD1B Water-Equivalent-Thickness Surface-Mass Anomaly RL06 dataset for Tellus Level-3 1.0-degree grid. Ver. RL06. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/GGAOD-3GJ60.

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For more information see Data Citations and Acknowledgments.

Journal Reference Landerer F. W. and S. C. Swenson, Accuracy of scaled GRACE terrestrial water storage estimates. Water Resources Research, Vol 48, W04531, 11 PP, doi:10.1029/2011WR011453, 2012.