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    • SORCE XPS Level 4 Solar Spectral Irradiance 1.0nm Res 24-Hour Means V012 (SOR4XPSD_LOW) at GES DISC

    Metadata Updated: September 18, 2025

    The SORCE XPS Level 4 Solar Spectral Irradiance 1.0nm Res 24-Hour Means product (SOR4XPSD_LOW) contains modelled spectral extreme ultraviolet (XUV) irradiances based on calibrated SORCE XUV Photometer System (XPS) data and flare plasma temperature derived from the GOES XRS instrument. The model data are reported in the spectral range from 0-40 nm at a resolution of 1.0 nm (low res) and averaged over a day. The XPS Level 2 data products, along with CHIANTI reference spectra, are used to construct the XPS Level 4 data products.The SOR4XPS5 data are stored in a single netCDF files containing data for the entire mission. Data variables stored in the file include:MODELFLUX: Array of solar irradiances [W/m2/nm] in 1.0 nm bins from 0 to 40 nmERR_ABS: Total combined standard uncertainty of the model flux irradiance results (accuracy)ERR_MEAS: Count-rate based combined standard uncertainty of the XPS-1,-2 measurement (precision)DATE: Year and day-of-year of observation (YYDDD)TIME: Seconds of day for middle of observationXPS_QS: Daily quiet-sun scale factor derived from XPS-1,-2 daily minimumXPS_AR: Daily active-region scale factor derived from XPS-1,-2 daily minimumXPS_FLARE: Flare scale factor for each XPS-1,-2GOES_QS: Daily quiet-sun scale factor derived from GOES XRS-B daily minimumGOES_AR: Daily active-region scale factor derived from GOES XRS-B daily minimumGOES_FLARE: Flare scale factor for each GOES XRS-B integrationFMTEMP: Flare model temperature [log10(K)] derived from ratio of GOES XRS-B to XRS-AFMINDEX: Index into flare model tableFMWEIGHT: Weight parameter for the flare model

    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 April 11, 2025
    Metadata Updated Date September 18, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date September 18, 2025
    Publisher NASA/GSFC/SED/ESD/TISL/GESDISC;UCO/LASP/SORCE
    Maintainer
    Identifier 10.5067/Y0HCCI3Z1JHD
    Data Last Modified 2025-09-11
    Category Earth Science
    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 d83bf673-0930-485d-ab6f-4c7461d431e7
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SOR4XPSD_LOW_012.png
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash cc82a5f06d305bbbbf20ce64a65420d02b5e502ace8d808bd4949c17f6cc062a
    Source Schema Version 1.1
    Temporal 2003-04-10/2003-04-10

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