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

(TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3)

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Data Access
Documentation
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Version	RL06.1Mv03
Processing Level	3
Start/Stop Date	2002-Apr-04 to Present
Short Name	TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3
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
DOI	10.5067/TEMSC-3MJ63
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
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, RL06.1Mv03, 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 2023-Jun-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
https://cmr.earthdata.nasa.gov/virtual-directory/collections/C2536982552-POCLOUD
LAND_MASK.CRI File
https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/mascon/docs/LAND_MASK.CRI.nc
PLACEMENT file
https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/mascon/docs/JPL_MSCNv03_PLACEMENT.nc
SCALE_FACTOR File
https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/mascon/docs/CLM4.SCALE_FACTOR.JPL.MSCNv03CRI.nc
Search Granules
https://search.earthdata.nasa.gov/search/granules?p=C2536982552-POCLOUD
DIRECT S3-ACCESS
Available for access in-region with AWS Cloud
Region
us-west-2
Bucket/Object Prefix: Protected buckets contain the data files for a given collection. Protected simply means users must log in to Earthdata Login before gaining access to contents within that S3 Bucket. Please use the S3Credential endpoint to gain an Earthdata login token for use in S3 Access. Public buckets, in contrast, house metadata such as checksums, imagery, and metadata files and the like. A user can access public buckets and these types of files without logging in to Earthdata Login. Most of the time, you'll want to access the protected bucket Information
podaac-ops-cumulus-protected/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3/
podaac-ops-cumulus-public/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3/
AWS S3 Credentials
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DATA RECIPE
https://github.com/podaac/GRACE Python script of converting netCDF4 to GeoTIFF
https://github.com/podaac/data-readers Generic Data Reader
IMPORTANT NOTICE
https://grace.jpl.nasa.gov/data/data-updates/ Grace Tellus Project site for announcing recent and historical updates regarding Tellus datasets.
https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/tellus/open/L3/docs/GRACE_GRACE-FO_ReleaseNotes_JPL_MASCON.pdf Release Note
ANOMALIES
https://grace.jpl.nasa.gov/about/feedback/ 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/.
GENERAL DOCUMENTATION
https://podaac.jpl.nasa.gov/GRACE-FO GRACE-FO Project Mission Page
https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/ Provides additional resources and information for the Global Mascon datasets.
https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/gracefo/open/docs/GRACE_GRACE-FO_Months_RL06.csv GRACE monthly data integration range
http://grace.jpl.nasa.gov/about/faq/ GRACE Tellus Project page for Frequently Asked Questions.
https://podaac.jpl.nasa.gov/GRACE GRACE Mission Information Page
https://podaac.jpl.nasa.gov/gravity/gracefo-documentation GRACE-FO Documentation and Technical Notes
https://podaac.jpl.nasa.gov/gravity/grace-documentation GRACE Documentation and Technical Notes
PUBLICATIONS
https://archive.podaac.earthdata.nasa.gov/podaac-ops-cumulus-docs/grace/open/L1B/GFZ/AOD1B/RL04/docs/Wiese_2016_WRR.pdf 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.
DATA CITATION POLICY
https://podaac.jpl.nasa.gov/CitingPODAAC Data Use and Citation Policy

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. Ver. RL06.1Mv03. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/TEMSC-3MJ63

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For more information see Data Citations and Acknowledgments.

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

Cloud Enabled

Status:

ACTIVE

Short Name:

TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3

Collection Concept ID:

C2536982552-POCLOUD

Spatial Coverage:

N: 90°

S: -90°

E: 180°

W: -180°

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Capabilities:

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PO.DAAC Data Subscriber

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                        Simple: podaac-data-downloader -c TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3 -d ./data --start-date 2002-04-04T00:00:00Z --end-date 2002-04-11T00:00:00Z -e ""
Download by Spatial and Temporal Search: podaac-data-downloader -c TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3 -d ./data --start-date 2002-04-04T00:00:00Z --end-date 2002-04-11T00:00:00Z -b="-180,-90,180,90"
Download by Extension: podaac-data-downloader -c TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3 -d ./data --start-date 2002-04-04T00:00:00Z --end-date 2002-04-11T00:00:00Z -e .nc
Download recent data (360 min.): podaac-data-subscriber -c TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3 -d ./data -m 360
Download recent data (1440 min.): podaac-data-subscriber -c TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3 -d ./data -m 1440

Direct S3-Access

Available for access in-region with AWS Cloud

Region:

us-west-2

Bucket/Object Prefix Protected buckets contain the data files for a given collection. Protected simply means users must log in to Earthdata Login before gaining access to contents within that S3 Bucket. Please use the S3Credential endpoint to gain an Earthdata login token for use in S3 Access.

Public buckets, in contrast, house metadata such as checksums, imagery, and metadata files and the like. A user can access public buckets and these types of files without logging in to Earthdata Login.

Most of the time, you'll want to access the protected bucket Information

podaac-ops-cumulus-protected/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3/

podaac-ops-cumulus-public/TELLUS_GRAC-GRFO_MASCON_GRID_RL06.1_V3/

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Data Recipes:

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

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

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

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

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