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    • RSS SMAP Level 2C Sea Surface Salinity NRT V6.0 Validated Dataset

    Metadata Updated: March 28, 2024

    The SMAP-SSS level 2C near real-time (NRT) V6.0 dataset produced by the Remote Sensing Systems (RSS) and sponsored by the NASA Ocean Salinity Science Team, is a validated product that provides near real-time orbital/swath data on sea surface salinity (SSS) derived from the NASA's Soil Moisture Active Passive (SMAP) mission. SMAP, launched on January 31, 2015, was initially designed to measure and map Earth's soil moisture and freeze/thaw state to better understand terrestrial water, carbon and energy cycles, and has been adapted to measure ocean SSS and ocean wind speed using its passive microwave instrument. The SMAP instrument is in a near polar orbiting, sun synchronous orbit with a nominal 8 day repeat cycle.

    The dataset includes derived SMAP SSS, SSS uncertainty using the NRT SMAP Salinity Retrieval Algorithm, top of atmosphere brightness temperature (TB), wind speed and direction data for extreme winds, and other all necessary ancillary data and the results of all intermediate steps. The observations are global, provided on a 0.25° fixed Earth grid with an approximate spatial resolution of 70 km. 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. Each data file covers one 98-minute orbit (15 files per day), is available in netCDF-4 file format with about 5 hours l atency.

    This RSS SMAP-SSS V6.0 NRT dataset holds tremendous potential for scientific research and various applications. Given the SMAP satellite's near-polar orbit and sun-synchronous nature with its 1000km swath, it achieves global coverage in approximately three days, enabling researchers to monitor and model global oceanic and climatic phenomena with unprecedented detail and timeliness. These data can inform and enhance understanding of global weather patterns, the Earth’s hydrological cycle, ocean circulation, and climate change.

    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

    Thumbnail

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 28, 2024
    Metadata Updated Date March 28, 2024
    Publisher NASA/JPL/PODAAC
    Maintainer
    Identifier C2832224417-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 2C Sea Surface Validated 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/SMP60-2SNRT. http://podaac.jpl.nasa.gov/smap. Remote Sensing Systems (RSS), Remote Sensing Systems (RSS), 2022-02-25, RSS SMAP Level 2C Sea Surface Salinity 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_L2_SSS_NRT_V6.jpg
    Harvest Object Id e2786088-1829-4707-acaa-6d08ebb3b4c1
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/SMP60-2SNRT
    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 2C Sea Surface Validated Dataset
    Source Datajson Identifier True
    Source Hash 3cd325cfeaf5ba75612e09f9f586698930f2f4112f7849a5be72681c9f568409
    Source Schema Version 1.1
    Spatial
    Temporal 2022-07-28T00:00:00Z/2024-03-27T00:00:00Z

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