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    • RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V6.0 Validated Dataset

    Metadata Updated: March 28, 2024

    The RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V6.0 Validated Dataset produced by the Remote Sensing Systems (RSS) and sponsored by the NASA Ocean Salinity Science Team, is a validated product that provides orbital/swath data on sea surface salinity (SSS) derived from the NASA's Soil Moisture Active Passive (SMAP) mission. The SMAP satellite was launched on 31 January 2015 with a near-polar orbit at an inclination of 98 degrees and an altitude of 685 km. It has an ascending node time of 6 pm and is sun-synchronous. With its 1000km swath, SMAP achieves global coverage in approximately 3 days, but has an exact orbit repeat cycle of 8 days. Malfunction of the SMAP scatterometer on 7 July, 2015, has necessitated the use of collocated wind speed, primarily from WindSat, for the surface roughness correction required for the surface salinity retrieval.

    The major changes in Version 6.0 from Version 5.0 are: (1) Removal of biases during the first few months of the SMAP mission that are related to the operation of the SMAP radar during that time. (2) Mitigation of biases that depend on the SMAP look angle. (3) Mitigation of salty biases at high Northern latitudes. (4) Revised sun-glint flag. The RSS SMAP L3 monthly product includes data for a range of parameters: derived sea surface salinity (SSS) with SSS-uncertainty, rain filtered SMAP sea surface salinity, collocated wind speed, data and ancillary reference surface salinity data from HYCOM. Each data file is available in netCDF-4 file format and is averaged over one-month time intervals with about 7-day latency (after the end of the averaging period). Data begins on April 1,2015 and is ongoing. Observations are global in extent with an approximate spatial resolution of 40KM. Note that while a SSS 40KM variable is also included in the product for most open ocean applications, The standard product of the SMAP Version 6.0 release is the smoothed salinity product with a spatial resolution of approximately 70 km.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Created Date March 28, 2024
    Metadata Updated Date March 28, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

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    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 28, 2024
    Metadata Updated Date March 28, 2024
    Publisher NASA/JPL/PODAAC
    Maintainer
    Identifier C2832226365-POCLOUD
    Data First Published 2021-01-13
    Language en-US
    Data Last Modified 2021-01-13
    Category SMAP, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Remote Sensing Systems (RSS). 2024-02-29. RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly Vaidated Dataset. Version 6.0. SMAP Sea Surface Salinity Products. Remote Sensing Systems, 444 Tenth Street, Suite 200, Santa Rosa, CA 95401, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Remote Sensing Systems (RSS). https://doi.org/10.5067/SMP60-3SMCS. http://podaac.jpl.nasa.gov/smap. Remote Sensing Systems (RSS), Remote Sensing Systems (RSS), 2022-02-25, RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V5.0 Validated Dataset, http://podaac.jpl.nasa.gov/smap.
    Creator Remote Sensing Systems (RSS)
    Graphic Preview Description Thumbnail
    Graphic Preview File https://podaac.jpl.nasa.gov/Podaac/thumbnails/SMAP_RSS_L3_SSS_SMI_MONTHLY_V6.jpg
    Harvest Object Id 14f90172-60a2-4ede-b98d-451dc301a41a
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/SMP60-3SMCS
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Release Place Remote Sensing Systems, 444 Tenth Street, Suite 200, Santa Rosa, CA 95401, USA
    Series Name RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly Vaidated Dataset
    Source Datajson Identifier True
    Source Hash 998f22b07001da41b4190212000697b5a8e7748b44c4a362cceb04a933416726
    Source Schema Version 1.1
    Spatial
    Temporal 2015-04-01T00:00:00Z/2024-03-27T00:00:00Z

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