JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL Release 06.1 Version 03

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 (RL06.1Mv03). 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. This RL06.1Mv03 is an updated version of the previous Tellus JPL Mascon RL06Mv02 (DOI, 10.5067/TEMSC-3JC62). RL06.1Mv03 differs from RL06Mv02 only in the Level-1B accelerometer transplant data that is used for the GF2 (GRACE-FO 2) satellite; RL06.1Mv03 uses the ACH data product. 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_GRAC-GRFO_MASCON_GRID_RL06.1_V3

Resources

Name Format Description Link
21 GRACE-FO Project Mission Page https://podaac.jpl.nasa.gov/GRACE-FO
22 Thumbnail https://podaac.jpl.nasa.gov/Podaac/thumbnails/TELLUS_GRAC-GRFO_MASCON_GRID_RL06_V2.jpg
33 Release Note https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/docs/GRACE_GRACE-FO_ReleaseNotes_JPL_MASCON.pdf
21 Provides additional resources and information for the Global Mascon datasets. https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/
8 GRACE monthly data integration range https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/gracefo/open/docs/GRACE_GRACE-FO_Months_RL06.csv
21 GRACE Tellus Project page for Frequently Asked Questions. http://grace.jpl.nasa.gov/about/faq/
21 GRACE Mission Information Page https://podaac.jpl.nasa.gov/GRACE
21 Generic Data Reader https://github.com/podaac/data-readers
21 Data Use and Citation Policy https://podaac.jpl.nasa.gov/CitingPODAAC
32 SCALE_FACTOR File https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/mascon/docs/CLM4.SCALE_FACTOR.JPL.MSCNv03CRI.nc
21 Grace Tellus Project site for announcing recent and historical updates regarding Tellus datasets. https://grace.jpl.nasa.gov/data/data-updates/
21 HTTPS endpoint for data browse and download https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2536982552-POCLOUD
21 Browse granule search results in Earthdata Search https://search.earthdata.nasa.gov/search/granules?p=C2536982552-POCLOUD
32 LAND_MASK.CRI File https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/mascon/docs/LAND_MASK.CRI.nc
21 Python script of converting netCDF4 to GeoTIFF https://github.com/podaac/GRACE
32 PLACEMENT file https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/mascon/docs/JPL_MSCNv03_PLACEMENT.nc
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FTEMSC-3MJ63
21 GRACE Tellus Project web tool for entering user feedback. Users are advised to only use this tool when submitting data quality issues directly to the GRACE Tellus Project. For all other inquiries, please visit https://podaac.jpl.nasa.gov/forum/. https://grace.jpl.nasa.gov/about/feedback/
33 For derivations of the CRI filter and gain factors, along with a discussion of leakage errors, please see Wiese et al., 2016, doi:10.1002/2016WR019344. https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/grace/open/L1B/GFZ/AOD1B/RL04/docs/Wiese_2016_WRR.pdf

Tags

  • climate-indicators
  • gravity-gravitational-field
  • oceans
  • solid-earth
  • atmospheric-ocean-indicators
  • sea-surface-topography
  • earth-science

Topics

Categories