JPL TELLUS GRACE-FO Level-3 Monthly Ocean Bottom Pressure Anomaly Release 6.0 version 02 in netCDF/ASCII/GeoTIFF Formats
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| DOI | 10.5067/GFOCN-3AJ62 |
| Short Name | TELLUS_GRFO_L3_JPL_RL06_OCN_v02 |
| Description | The JPL monthly ocean bottom pressure grids are given as equivalent water thickness changes derived from GRACE-FO time-variable gravity observations during the specified timespan in ASCII/netCDF/GeoTIFF formats. The Equivalent water thickness represent sea floor pressure changes due to the integral effect of ocean and atmosphere processes, including global mean ocean bottom pressure changes (mean ocean mass and mean atmosphere mass over the global oceans). The Level-2 GAD product has been added back, a glacial isostatic adjustment (GIA) correction has been applied, and standard corrections for geocenter (degree-1) and C20 (degree-20) are incorporated. Post-processing filters (i.e., de-striping and spatial smoothing) have been applied to reduce correlated errors. 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 02 (v02) of the ocean bottom pressure data has resolved a processing inconsistency issue in the version 01 files for both GRACE and GRACE-FO. This inconsistency resulted in erroneous leakage corrections, in particular near GIA-affected regions. Interior ocean data points (i.e., more than 1000 km away from coastlines) were minimally affected. |
| Version | RL06 v02 |
| Dataset Type | OPEN |
| Measurement | SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY OCEANS > OCEAN PRESSURE > WATER PRESSURE > OCEAN BOTTOM PRESSURE |
| 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 |
| 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: 2019-Oct-30 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, JPL, RL06v02, OCEAN |
| Persistent ID | PODAAC-GFOCN-3AJ62 |
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/ocean_mass/RL06/v02/JPL |
| OPENDAP | https://podaac-opendap.jpl.nasa.gov/opendap/allData/tellus/L3/gracefo/ocean_mass/RL06/v02/JPL/ |
| Format (Compression) | NETCDF (NONE) |
| Web Service | https://podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-GFOCN-3AJ62 (Search Granule) |
| Read Software | |
| netCDF Reader | https://podaac-tools.jpl.nasa.gov/drive/files/allData/ghrsst/sw/generic_nc_readers netCDF Read Software |
| 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's Guide |
| 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. 2019. JPL TELLUS GRACE-FO Level-3 Monthly Ocean Bottom Pressure Anomaly Release 6.0 version 02 in netCDF/ASCII/GeoTIFF Formats. Ver. RL06 v02. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/GFOCN-3AJ62.
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. | |||||||
