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| DOI | 10.5067/GFLND-3AG63 |
| Short Name | TELLUS_GRFO_L3_GFZ_RL06_LND_v03 |
| Description | The monthly land mass grids contain water mass anomalies given as equivalent water thickness derived from GRACE & GRACE-FO time-variable gravity observations during the specified timespan, and relative to the specified time-mean reference period. The Equivalent water thickness represents the total terrestrial water storage anomalies from soil moisture, snow, surface water (incl. rivers, lakes, reservoirs etc.), as well as groundwater and aquifers. A glacial isostatic adjustment (GIA) correction has been applied, and standard corrections for geocenter (degree-1), C20 (degree-20) and C30 (degree-30) are incorporated. Post-processing filters have been applied to reduce correlated errors. Version 03 (v03) of the terrestrial water storage data uses updated and consistent C20 and Geocenter corrections (i.e., Technical Notes TN-14 and TN-13).Data grids are provided in ASCII/netCDF/GeoTIFF formats. For the RL06 version, all GRACE products in the ASCII format have adopted the YAML encoding header, which is in full compliance with the PO.DAAC metadata best practices. |
| Version | RL06 v03 |
| Dataset Type | OPEN |
| Measurement | SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY |
| Processing Level | 3 |
| Coverage | Region: Global Northernmost Latitude: 89.5 degrees Southernmost Latitude: -89.5 degrees Westernmost Longitude: 0 degrees Easternmost Longitude: 360 degrees Time Span: 2018-May-22 to Present Granule Time Span: 2018-Jun-01 to 2020-Apr-30 |
| Resolution | Spatial Resolution: 1 degrees (Latitude) x 1 degrees (Longitude) Temporal Resolution: 1 Month |
| Projection | Type: Gridded Detail: Ellipsoid: WGS 84 |
| Latency | 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. |
| Project | GRACE Follow-On (GRACE-FO) |
| Data Provider | Creator: Felix Landerer Release Place: JPL Release Date: 2020-Jan-22 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-FO, OBP, LWET, Gravity, CSR, RL06, Land, RL06v03 |
| Persistent ID | PODAAC-GFLND-3AG63 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
| PO.DAAC DRIVE | https://podaac-tools.jpl.nasa.gov/drive/files/allData/tellus/L3/gracefo/land_mass/RL06/v03/GFZ |
| OPENDAP | https://podaac-opendap.jpl.nasa.gov/opendap/allData/tellus/L3/gracefo/land_mass/RL06/v03/GFZ/ |
| Format (Compression) | NETCDF (NONE) |
| Web Service | https://podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-GFLND-3AG63 (Search Granule) |
| THREDDS | https://thredds.jpl.nasa.gov/thredds/catalog/ncml_aggregation/GeodeticsGravity/gracefo/catalog.html?dataset=ncml_aggregation/GeodeticsGravity/gracefo/aggregate__TELLUS_GRFO_L3_GFZ_RL06_LND_v03.ncml THREDDS Data Server access for this dataset |
| Tools and Services | |
| LAS | https://podaac-tools.jpl.nasa.gov/las/UI.vm Live Access Server |
| Read Software | |
| netCDF Reader | https://podaac-tools.jpl.nasa.gov/drive/files/allData/ghrsst/sw/generic_nc_readers Generic netCDF readers provided in multiple programming languages |
| User's Guide | |
| User Guide | https://podaac-tools.jpl.nasa.gov/drive/files/allData/gracefo/docs/GRACE-FO_L3_Handbook_JPL-D-103133_20190327.pdf User guidance documentation for this dataset |
| Project Materials | |
| YAML Tech-Note | https://earthdata.nasa.gov/esdis/eso/standards-and-references/yaml-encoding-ascii-format-for-grace-grace-fo-mission-data NASA approved YAML encoding technical Note |
| Additional Sites | |
| GRACE-FO Project | https://gracefo.jpl.nasa.gov/ GRACE-FO Project Website |
| GRACE-FO Info | https://podaac.jpl.nasa.gov/GRACE-FO PODAAC GRACE-FO Mission-Page |
| Citation | Felix Landerer. 2020. GFZ TELLUS GRACE-FO Level-3 Monthly Land Water-Equivalent-Thickness Surface Mass Anomaly Release 6.0 version 03 in netCDF/ASCII/GeoTIFF Formats. Ver. RL06 v03. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/GFLND-3AG63.
For more information see Data Citations and Acknowledgments.
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| 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. | |||||||
