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    • OMPS/NPP L3 NM PCA Sulfur Dioxide (SO2) Total Column Daily Best Pixel Global Gridded 0.25 degree x 0.25 degree V1 (OMPS_NPP_NMSO2_PCA_L3_DAILY) at GES DISC

    Metadata Updated: December 6, 2023

    The OMPS-NPP L3 NM PCA Sulfur Dioxide (SO2) Total Column Daily Best Pixel Global Gridded 0.25 x 0.25 degree product contains sulfur dioxide amounts gridded at 0.25 x 0.25 degree resolution using the 'best' pixel method. Data are measured by the Ozone Mapping and Profiling Suite (OMPS) Nadir-Mapper (NM) sensor on the Suomi-NPP satellite. The product is based on the NASA Goddard Space Flight Center principal component analysis (PCA) spectral fitting algorithm (Li et al., 2013, 2017).

    Each granule contains data from the daylight portion of each orbit measured for a full day. Spatial coverage is global (-90 to 90 degrees latitude), and the spatial resolution is 0.25 x 0.25 degrees.

    The files are written using netCDF version 4.

    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.

    Downloads & Resources

    References

    https://doi.org/10.5194/amt-10-1495-2017
    https://doi.org/10.5194/amt-10-445-2017
    https://doi.org/10.1002/2013GL058134
    https://doi.org/10.5194/amt-2020-186

    Dates

    Metadata Created Date May 30, 2023
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Annual mean SO2 vertical column densities (VCDs) in Dobson Units (DU, 1 DU = 2.69 ×1016 molecules/cm2) for 2018 from the OMPS_NPP_NMSO2_PCA_L3_DAILY V2.0 product. Pixels with large cloud fractions (> 0.3) or solar zenith angles (> 65º) or near the edge of the swath (rows 1-2 and 35-36 out of 36 OMPS rows) or low sensitivities to SO2 (air mass factor, AMF < 0.3) have been excluded. In addition, days with large volcanic plumes from explosive eruptions have also been excluded. Areas having major anthropogenic SO2 sources (e.g., India, eastern China, the Middle East, and South Africa) or degassing volcanoes (e.g., Kilauea and Etna) can be identified from the map.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date December 6, 2023
    Publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
    Maintainer
    Identifier C2567923363-GES_DISC
    Data First Published 2022-12-27
    Language en-US
    Data Last Modified 2022-12-27
    Category NPP-JPSS, 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 Can Li, Nickolay A. Krotkov, Peter Leonard, et al.. 2023-03-14. OMPS_NPP_NMSO2_PCA_L3_DAILY. Version 1. OMPS/NPP L3 NM PCA Sulfur Dioxide (SO2) Total Column Daily Best Pixel Global Gridded 0.25 degree x 0.25 degree V1. Greenbelt, MD, USA. OMPS_NPP_NMSO2_PCA_L3_DAILY. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://doi.org/10.5067/OMPS/OMPS_NPP_NMSO2_PCA_L3_DAILY.1. https://disc.gsfc.nasa.gov/datacollection/OMPS_NPP_NMSO2_PCA_L3_DAILY_1.html. Digital Science Data.
    Creator Can Li, Nickolay A. Krotkov, Peter Leonard, et al.
    Data Presentation Form Digital Science Data
    Graphic Preview Description Annual mean SO2 vertical column densities (VCDs) in Dobson Units (DU, 1 DU = 2.69 ×1016 molecules/cm2) for 2018 from the OMPS_NPP_NMSO2_PCA_L3_DAILY V2.0 product. Pixels with large cloud fractions (> 0.3) or solar zenith angles (> 65º) or near the edge of the swath (rows 1-2 and 35-36 out of 36 OMPS rows) or low sensitivities to SO2 (air mass factor, AMF < 0.3) have been excluded. In addition, days with large volcanic plumes from explosive eruptions have also been excluded. Areas having major anthropogenic SO2 sources (e.g., India, eastern China, the Middle East, and South Africa) or degassing volcanoes (e.g., Kilauea and Etna) can be identified from the map.
    Graphic Preview File https://docserver.gesdisc.eosdis.nasa.gov/public/project/MEaSUREs/Krotkov/OMPS_NPP_NMSO2_PCA_L3_DAILY_1.png
    Harvest Object Id d5a98040-5a4c-411e-8ae6-506d4bd0ae3d
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Issue Identification OMPS_NPP_NMSO2_PCA_L3_DAILY
    Homepage URL https://doi.org/10.5067/OMPS/OMPS_NPP_NMSO2_PCA_L3_DAILY.1
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Related Documents https://doi.org/10.5194/amt-10-1495-2017, https://doi.org/10.5194/amt-10-445-2017, https://doi.org/10.1002/2013GL058134, https://doi.org/10.5194/amt-2020-186
    Release Place Greenbelt, MD, USA
    Series Name OMPS_NPP_NMSO2_PCA_L3_DAILY
    Source Datajson Identifier True
    Source Hash 4610bf93d48bd0a06c25e08d0d7ea148efc58d153bd32ee2d462a2d3859ebcbb
    Source Schema Version 1.1
    Spatial
    Temporal 2012-01-26T00:00:00Z/2023-03-20T00:00:00Z

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