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    • Geostationary Operational Environmental Satellite, R-Series (GOES-R) Extreme Ultraviolet X-Ray Irradiance Sensors (EXIS) Level 2 Products

    Metadata Updated: October 18, 2024

    The EUV and X-Ray Irradiance Sensors (EXIS) measures solar irradiance at the very short wavelengths where the Sun's output varies the most. EXIS has two primary components, the X-Ray Sensor (XRS) and the Extreme Ultraviolet Sensor (EUVS). EXIS Level 2 data are used by NOAA’s Space Weather Prediction Center to produce warnings for radio blackouts when large flares occur. EXIS extreme ultraviolet data is used in models to help determine upper atmospheric densities which impact satellite orbits. EXIS Level 2 data products include measurements of irradiances in two X-ray bands, seven lines at extreme and far ultraviolet wavelengths, and the Magnesium II index, The EXIS products are at multiple cadences including high resolution data of 1 to several seconds as well as 1-minute and daily averages. Other products include flare summaries, flare locations and extreme ultraviolet spectra generated by a proxy model. Data are in NetCDF-4 format.

    Access & Use Information

    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 Date September 27, 2022
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) September 1, 2018 (publication)
    Frequency Of Update continual

    Metadata Source

    Harvested from NGDC STP Space Weather

    Other Data Resources

    Graphic Preview

    NOAA GOES Spacecraft

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 27, 2022
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) September 1, 2018 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Author)
    Contact Email
    Guid gov.noaa.ncei.swx:exis-l2-goesr
    Access Constraints Cite this dataset when used as a source: Machol, Janet, Stefan Codrescu, and Rodney Viereck. 'GOES-R Series Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) Level 2 Products'. NOAA National Centers for Environmental Information, 2018. https://doi.org/10.25921/94P8-YE57., NCEI cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCEI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
    Coupled Resource
    Frequency Of Update continual
    Graphic Preview Description NOAA GOES Spacecraft
    Graphic Preview File https://www.ncei.noaa.gov/pub/data/metadata/images/noaa_goesr_series_satellite_illustration.jpg
    Graphic Preview Type JPEG
    Harvest Object Id 408c402c-0432-4047-b05f-708cb48a2529
    Harvest Source Id 720e273e-9143-4e92-8a4c-fe2bf3aacd0b
    Harvest Source Title NGDC STP Space Weather
    Licence These GOES-16 data have reached provisional maturity and are still undergoing testing. Users receiving these data through any dissemination means assume all risk related to their use and NOAA disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose.
    Lineage This dataset was produced by NESDIS, and is archived at the NOAA National Centers for Environmental Information (NCEI).
    Metadata Language eng; USA
    Metadata Type geospatial
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2017-12-19

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