JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height JPL Release 06.3 Version 04

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.

Resources

Name Format Description Link
21 Provides additional resources and information for the Global Mascon datasets. https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FTEMSC-3MJ634
21 Python script of converting netCDF4 to GeoTIFF https://github.com/podaac/GRACE
21 Grace Tellus Project site for announcing recent and historical updates regarding Tellus datasets. https://grace.jpl.nasa.gov/data/data-updates/
21 GRACE-FO Project Website (external to PO.DAAC) https://podaac.jpl.nasa.gov/GRACE-FO
22 Thumbnail https://podaac.jpl.nasa.gov/Podaac/thumbnails/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.3_V4.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 GRACE Tellus Project page for Frequently Asked Questions. http://grace.jpl.nasa.gov/about/faq/
21 PODAAC GRACE-FO Project-Page https://podaac.jpl.nasa.gov/GRACE
21 Data Use and Citation Policy https://podaac.jpl.nasa.gov/CitingPODAAC
21 HTTPS endpoint for data browse and download https://cmr.earthdata.nasa.gov/virtual-directory/collections/C3195502222-POCLOUD
21 Browse granule search results in Earthdata Search https://search.earthdata.nasa.gov/search/granules?p=C3195502222-POCLOUD
21 Page that includes all GRACE-FO Documentation and Technical Notes https://podaac.jpl.nasa.gov/gravity/gracefo-documentation
21 RL0.63 Version 4 Release Note https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/gracefo/open/docs/GRACE_GRACE-FO_ReleaseNotes_JPL_MASCON.txt

Tags

  • glaciers-ice-sheets
  • cryosphere
  • terrestrial-hydrosphere
  • water-budget
  • earth-science
  • ground-water

Topics

Categories