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    • Polar Ozone and Aerosol Measurement II Version 6

    Metadata Updated: April 11, 2025

    POAM2_VER6 data are Polar Ozone and Aerosol Measurement II Version 6.0 data. The Polar Ozone and Aerosol Measurement (POAM) II instrument measures the vertical distribution of atmospheric ozone, nitrogen dioxide, and aerosol extinction. The instrument was developed by the Naval Research Laboratory (NRL).POAM II measures solar extinction in nine narrow band channels, covering the spectral range from approximately 350 to 1060 nm. Solar extinction by the atmosphere is measured using the solar occultation technique; the sun is observed through the Earth's atmosphere as it rises and sets as viewed from the satellite.POAM II was launched aboard the French SPOT-3 satellite on 26 September, 1993 into a Sun synchronous polar orbit. As seen from the satellite, the Sun rises in the north polar region and sets in the south polar region 14.2 times per day. Sunrise measurements are made in a latitude band from 55-71 degrees north while sunsets occur between 63-88 degrees south. The POAM II mission was interrupted by the failure of the SPOT-3 satellite in November of 1996.Each data granule contains one month of data for a particular hemisphere, taken at approximately 101 minute intervals. The latitudinal extent of data for the northern hemisphere is 54.68 to 71.01 and -62.55 to -88.11 for the southern hemisphere. The longitude ranges from 0 to 360. Several images in 'gif' format are also available. The images represent daily average ozone (altitude .vs. time) for the northern and southern hemispheres, daily average aerosol extinction for the southern hemisphere and latitudinal limits of data samples are also provided. The data consists of profiles of ozone and nitrogen dioxide (NO2) concentration and aerosol extinction at 1.06um.

    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

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date April 11, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date April 11, 2025
    Publisher NASA/LARC/SD/ASDC
    Maintainer
    Identifier C1299786949-LARC_ASDC
    Data First Published 2014-03-26
    Language en-US
    Data Last Modified 2025-03-31
    Category POAM, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 83d86bf7-c20b-455e-af0b-a11a31b538d1
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1299786949-LARC_ASDC.html
    Metadata Type geospatial
    Old Spatial <?xml version="1.0" encoding="UTF-8"?><gml:Polygon xmlns:gml="http://www.opengis.net/gml/3.2" srsName="EPSG:9825"><gml:outerBoundaryIs><gml:LinearRing><gml:posList>-88.12 -180.0 -88.12 180.0 71.02 180.0 71.02 -180.0 -88.12 -180.0</gml:posList></gml:LinearRing></gml:outerBoundaryIs><gml:innerBoundaryIs></gml:innerBoundaryIs></gml:Polygon>
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 3aed55165d93da6d6102a41521ee6927a9af8226582cb377feacb521996f40bc
    Source Schema Version 1.1
    Spatial
    Temporal 1993-10-15T00:00:00Z/1996-11-13T23:59:59.999Z

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