JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL Release 06 Version 02
| DOI | 10.5067/TEMSC-3MJ62 |
| Short Name | TELLUS_GRAC-GRFO_MASCON_GRID_RL06_V2 |
| Description | This dataset contains gridded monthly global water storage/height anomalies relative to a time-mean, derived from GRACE and GRACE-FO and processed at JPL using the Mascon approach (Version2/RL06). These data are provided in a single data file in netCDF format, and can be used for analysis for ocean, ice, and hydrology phenomena. The water storage/height anomalies are given in equivalent water thickness units (cm). The solution provided here is derived from solving for monthly gravity field variations in terms of geolocated spherical cap mass concentration functions, rather than global spherical harmonic coefficients. Additionally, realistic geophysical information is introduced during the solution inversion to intrinsically remove correlated error. Thus, these Mascon grids do not need to be destriped or smoothed, like traditional spherical harmonic gravity solutions. The complete Mascon solution consists of 4,551 relatively independent estimates of surface mass change that have been derived using an equal-area 3-degree grid of individual mascons. It should be noted that this dataset does not correct for leakage errors across coastlines; it is therefore recommended only for users who want to apply their own algorithm to separate between land and ocean mass very near coastlines. Please refer to the 'Data Access' tab at the top of this page to gain direct access to the Mascon data. For more information, please visit https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/. For a detailed description on the Mascon solution, including the mathematical derivation, implementation of geophysical constraints, and solution validation, please see Watkins et al., 2015, doi: 10.1002/2014JB011547. This product is intended for expert use only; other users are encouraged to use the CRI-filtered Mascon dataset, which is available here: https://podaac.jpl.nasa.gov/dataset/TELLUS_GRACE_MASCON_CRI_GRID_RL06_V2. |
| Version | 2 |
| Dataset Type | ACTIVE |
| Measurement | SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY ANOMALIES |
| Processing Level | 3 |
| Coverage | Region: GLOBAL North Bounding Coordinate: 90 degrees South Bounding Coordinate: -90 degrees West Bounding Coordinate: -180 degrees East Bounding Coordinate: 180 degrees Time Span: 2002-Apr-04 to Present Granule Time Span: 2002-Apr-16 to 2020-Oct-16 |
| Resolution | Spatial Resolution: 0.5 degrees (Latitude) x 0.5 degrees (Longitude) Temporal Resolution: 1 Month |
| Projection | Projection Type: Gridded Ellipsoid: WGS 84 |
| Platform/Sensor | GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1.0 minutes Inclination Angle: 89.0 degrees GRACE-FO KBR SENSOR Name: GRACE-FO K-Band Ranging System (GRACE-FO KBR) Swath Width: -1.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1.0 minutes Inclination Angle: 89.0 degrees GRACE-FO SCA SENSOR Name: GRACE-FO Star Camera Assembly (GRACE-FO SCA) Swath Width: -1.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: -1.0 minutes Inclination Angle: 89.0 degrees GRACE-FO ACC SENSOR Name: GRACE-FO SuperSTAR Accelerometer (GRACE-FO ACC) Swath Width: -1.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. GRACE / Platform Name: Gravity Recovery and Climate Experiment (GRACE) Orbit Period: -1.0 minutes Inclination Angle: 89.0 degrees GRACE SCA SENSOR Name: Star Camera Assembly (GRACE SCA) GRACE / Platform Name: Gravity Recovery and Climate Experiment (GRACE) Orbit Period: -1.0 minutes Inclination Angle: 89.0 degrees GRACE KBR SENSOR Name: GRACE K-Band Ranging System (GRACE KBR) Swath Width: -1.0 kilometers Description: Spacecraft angular distance from orbital plane relative to the Equator. |
| Project | Gravity Recovery and Climate Experiment (GRACE) |
| Data Provider | Publisher: TELLUS Creator: D. N. Wiese, D.-N. Yuan, C. Boening, F. W. Landerer, M. M. Watkins Release Place: JPL Release Date: 2019-Nov-26 Resource: https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/ |
| Keyword(s) | GRACE, tellus, mascon, water storage, ocean mass, land mass, water height, water mass, mass, land, ocean, gravity, pressure, ocean pressure, ocean bottom pressure, rl06 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
| Direct Access | |
| PO.DAAC DRIVE | https://podaac-tools.jpl.nasa.gov/drive/files/allData/tellus/L3/mascon/RL06/JPL/v02/non-CRI/netcdf PO.DAAC Drive |
| OPENDAP DATA | https://podaac-opendap.jpl.nasa.gov/opendap/allData/tellus/L3/mascon/RL06/JPL/v02/non-CRI/netcdf/ The OPeNDAP base directory location for the collection. |
| Web Service | https://podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-TEMSC-3MJ62 (Search Granule) |
| Format (Compression) | NETCDF 4 |
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| Citation | D. N. Wiese, D.-N. Yuan, C. Boening, F. W. Landerer, M. M. Watkins. 2019. JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL RL06 Version 02. Ver. 2. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/TEMSC-3MJ62
For more information see Data Citations and Acknowledgments.
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| Journal Reference | Watkins, M. M., D. N. Wiese, D.-N. Yuan, C. Boening, F. W. Landerer (2015), Improved methods for observing Earth's time variable mass distribution with GRACE, JGR Solid Earth, 10.1002/2014JB011547. | |||||||