JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL Release 06.3 Version 04
(TELLUS_GRAC-GRFO_MASCON_GRID_RL06.3_V4)| Version | RL06.3Mv04 |
| Processing Level | 3 |
| Start/Stop Date | 2002-Apr-04 to Present |
| Short Name | TELLUS_GRAC-GRFO_MASCON_GRID_RL06.3_V4 |
| 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 (RL06.3Mv04). 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 data are provided in a single data file in netCDF format, with water storage/height anomalies in equivalent water thickness units (cm). The data are derived from solving for monthly gravity field variations on geolocated spherical cap mass concentration functions, rather than global spherical harmonic coefficients. Additionally, realistic geophysical information is introduced during the computation to intrinsically remove correlated errors. Thus, these Mascon grids do not need to be de-correlated or smoothed, like traditional spherical harmonic gravity solutions.
The complete Mascon solution consists of 4,551 independent estimates of surface mass change that have been derived using an equal-area 3-degree grid of individual mascons. Please note 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. This RL06.3Mv04 is an updated version of the previous Tellus JPL Mascon RL06.1Mv03. For more information, please visit https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/. For a detailed description on the Mascon processing, including the mathematical derivation, implementation of geophysical constraints, and 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_GRAC-GRFO_MASCON_GRID_RL06.3_V4. |
| DOI | 10.5067/TEMSC-3MJ634 |
| Measurement | TERRESTRIAL HYDROSPHERE > WATER BUDGET > TERRESTRIAL WATER STORAGE TERRESTRIAL HYDROSPHERE > GROUND WATER CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER MASS BALANCE/ICE SHEET MASS BALANCE |
| Platform/Sensor | GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: 94.5 minutes Inclination Angle: 89.0 degrees GRACE-FO MWI SENSOR Name: GRACE-FO Microwave Instrument (GRACE-FO MWI) Swath Width: 24, 32 ghz Description: Microwave frequencies the instrument operates at. GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: 94.5 minutes Inclination Angle: 89.0 degrees GRACE-FO LRI SENSOR Name: GRACE-FO Laser Ranging Interferometer (GRACE-FO LRI) GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: 94.5 minutes Inclination Angle: 89.0 degrees GRACE-FO ACC SENSOR Name: GRACE-FO SuperSTAR Accelerometer (GRACE-FO ACC) GRACE-FO / Platform Name: Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) Orbit Period: 94.5 minutes Inclination Angle: 89.0 degrees GRACE-FO SCA SENSOR Name: GRACE-FO Star Camera Assembly (GRACE-FO SCA) GRACE / Platform Name: Gravity Recovery and Climate Experiment (GRACE) Orbit Period: 94.5 minutes Inclination Angle: 89.0 degrees KBR SENSOR Name: K-Band Ranging system (KBR) Show More |
| Project | Gravity Recovery and Climate Experiment (GRACE) |
| Project | Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) |
| Data Provider | Publisher: JPL/Tellus Creator: D. N. Wiese, D.-N. Yuan, C. Boening, F. W. Landerer, M. M. Watkins Release Place: JPL/PO.DAAC Release Date: 2023-Jan-25 Resource: https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/ |
| Format | netCDF-4 |
| Keyword(s) | Tellus, Mascon, Terrestrial Water Storage, Ocean Mass, Water Height, Water Mass, GRACE-FO, RL06.3Mv04, Ocean Bottom Pressure, Sea Level |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 0.5 Decimal Degrees x 0.5 Decimal Degrees Temporal Resolution: Monthly - < Annual 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 2025-Aug-16 Projection Projection Type: Equal Area Spherical Lat-Lon Projection Detail: Geolocation information included for each pixel Ellipsoid: WGS 84 |
| DIRECT ACCESS | |
| Browse Granule Listing | |
| Search Granules | |
| DIRECT S3-ACCESS | |
| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.3_V4/ | |
| podaac-ops-cumulus-public/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.3_V4/ | |
AWS S3 Credentials | |
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| Name | Long Name | Unit |
|---|---|---|
| GAD | OCEAN_ATMOSPHERE_DEALIAS_MODEL_(GAD) | cm |
| lat | latitude | degrees_north |
| lat_bounds | latitude boundaries | degrees_north |
| lon | longitude | degrees_east |
| lon_bounds | longitude boundaries | degrees_east |
| lwe_thickness | Liquid_Water_Equivalent_Thickness | cm |
| mascon_ID | Mascon_Identifier | dimensionless |
| time | time | days since 2002-01-01T00:00:00Z |
| time_bounds | time boundaries | days since 2002-01-01T00:00:00Z |
| uncertainty | uncertainty | cm |
| DATA CITATION GUIDELINES | |
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| GENERAL DOCUMENTATION | |
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
| Citation | D. N. Wiese, D.-N. Yuan, C. Boening, F. W. Landerer, M. M. Watkins. 2023. JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL RL06.3Mv04. Ver. RL06.3Mv04. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/TEMSC-3MJ634
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, 120, 4. 10.1002/2014JB011547 Wiese, D. N., F. W. Landerer, and M. M. Watkins. 2016. Quantifying and reducing leakage errors in the JPL RL05M GRACE mascon solution , Water Resour. Res., 52. https://doi.org//10.1002/2016WR019344 |
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| Version | Dataset | Version Date | Status | |
|---|---|---|---|---|
| RL06Mv02 | JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height Release 06 Version 02 | 2021-06-16 | RETIRED. | 2021-06-16T17:42:00.000Z |
| RL06.3Mv04 | JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL Release 06.3 Version 04 | 2024-08-13 | ACTIVE | 2024-08-13T20:30:00.000Z |
| RL06.1Mv03 | JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL Release 06.1 Version 03 | 2021-06-16 | RETIRED. | 2021-06-16T17:42:00.000Z |