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NOAA Space Environment Monitor (SEM) Science-Quality Solar X-Ray Sensor (XRS) Data from GOES 1-15

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 02, 2026 at 05:39 PM | Dataset Last Updated: July 01, 1974 at 12:00 AM
The Space Environment Monitor (SEM) Solar X-Ray Sensor (XRS) onboard the GOES satellite series provides solar X-ray irradiances for the wavelength bands of 0.5 to 4 Angstrom (short channel) and 1 to 8 Angstrom (long channel). This data is used to track solar activity including solar flares. Large solar X-ray flares can change the Earth’s ionosphere, which blocks high-frequency (HF) radio transmissions on the sunlit side of the Earth. Solar flares are also associated with Coronal Mass Ejections (CMEs) which can ultimately lead to geomagnetic storms. This data collection includes Reprocessed Level-2 SEM/XRS data from GOES 1-15. The data are enhanced to science quality from the original operational archive. Enhancements include corrected calibrations, updated quality flagging, full ephemeris information, high-cadence and averaged data, and summaries of flare events. The data were produced by NOAA’s National Centers for Environmental Information (NCEI) and archived by NOAA's Comprehensive Large Array-Data Stewardship System (CLASS).

Resources

5 resources available

  • NCEI Landing Page for This Dataset

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  • NCEI Direct Download (Dataset Files)

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  • GOES Space Weather Instruments

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  • Global Change Master Directory (GCMD) Keywords

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  • NOAA National Centers for Environmental Information (NCEI)

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EARTH SCIENCE > Solar Physics > Solar Activity > Solar Events EARTH SCIENCE > Solar Physics > Solar Activity > Solar Flares EARTH SCIENCE > Sun-earth Interactions > Solar Activity > Solar X-ray Emissions EARTH SCIENCE > Spectral/Engineering > X-Ray EARTH SCIENCE > Spectral/Engineering > X-Ray > X-Ray Flux EARTH SCIENCE > Spectral/Engineering > X-Ray > X-Ray Irradiance GOES-1 > Geostationary Operational Environmental Satellite - 1 GOES-2 > Geostationary Operational Environmental Satellite - 2

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
{
  "fn": "NOAA National Centers for Environmental Information",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:ncei.info@noaa.gov"
}
describedByType application/octet-steam
description The Space Environment Monitor (SEM) Solar X-Ray Sensor (XRS) onboard the GOES satellite series provides solar X-ray irradiances for the wavelength bands of 0.5 to 4 Angstrom (short channel) and 1 to 8 Angstrom (long channel). This data is used to track solar activity including solar flares. Large solar X-ray flares can change the Earth’s ionosphere, which blocks high-frequency (HF) radio transmissions on the sunlit side of the Earth. Solar flares are also associated with Coronal Mass Ejections (CMEs) which can ultimately lead to geomagnetic storms. This data collection includes Reprocessed Level-2 SEM/XRS data from GOES 1-15. The data are enhanced to science quality from the original operational archive. Enhancements include corrected calibrations, updated quality flagging, full ephemeris information, high-cadence and averaged data, and summaries of flare events. The data were produced by NOAA’s National Centers for Environmental Information (NCEI) and archived by NOAA's Comprehensive Large Array-Data Stewardship System (CLASS).
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Landing Page for This Dataset",
    "accessURL": "https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncei.swx:goes_sem-xrs-sci/html",
    "mediaType": "text/html",
    "description": "Dataset landing page with general information and links to access the data.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Direct Download (Dataset Files)",
    "accessURL": "https://www.ncei.noaa.gov/data/goes-space-environment-monitor/access/",
    "mediaType": "text/html",
    "description": "Direct download for the dataset.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GOES Space Weather Instruments",
    "accessURL": "https://www.ncei.noaa.gov/products/goes-1-15/space-weather-instruments",
    "mediaType": "text/html",
    "description": "GOES Space Weather Instruments web page",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Global Change Master Directory (GCMD) Keywords",
    "accessURL": "https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords",
    "mediaType": "text/html",
    "description": "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NOAA National Centers for Environmental Information (NCEI)",
    "accessURL": "https://www.ncei.noaa.gov",
    "mediaType": "text/html",
    "description": "NCEI home page with information, data access and contact information.",
    "describedByType": "application/octet-stream"
  }
]
identifier https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/STP/Space_Weather/iso/xml/goes_sem-xrs-sci.xml
issued 1974-07-01T00:00:00.000+00:00
keyword 
[
  "EARTH SCIENCE > Solar Physics > Solar Activity > Solar Events",
  "EARTH SCIENCE > Solar Physics > Solar Activity > Solar Flares",
  "EARTH SCIENCE > Sun-earth Interactions > Solar Activity > Solar X-ray Emissions",
  "EARTH SCIENCE > Spectral/Engineering > X-Ray",
  "EARTH SCIENCE > Spectral/Engineering > X-Ray > X-Ray Flux",
  "EARTH SCIENCE > Spectral/Engineering > X-Ray > X-Ray Irradiance",
  "GOES-1 > Geostationary Operational Environmental Satellite - 1",
  "GOES-2 > Geostationary Operational Environmental Satellite - 2",
  "GOES-3 > Geostationary Operational Environmental Satellite - 3",
  "GOES-4 > Geostationary Operational Environmental Satellite - 4",
  "GOES-5 > Geostationary Operational Environmental Satellite - 5",
  "GOES-6 > Geostationary Operational Environmental Satellite - 6",
  "GOES-7 > Geostationary Operational Environmental Satellite - 7",
  "GOES-8 > Geostationary Operational Environmental Satellite - 8",
  "GOES-9 > Geostationary Operational Environmental Satellite - 9",
  "GOES-10 > Geostationary Operational Environmental Satellite - 10",
  "GOES-11 > Geostationary Operational Environmental Satellite - 11",
  "GOES-12 > Geostationary Operational Environmental Satellite - 12",
  "GOES-13 > Geostationary Operational Environmental Satellite - 13",
  "GOES-14 > Geostationary Operational Environmental Satellite - 14",
  "GOES-15> Geostationary Operational Environmental Satellite - 15",
  "XRS > X-ray Sensor",
  "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce"
]
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 1974-07-01T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
rights otherRestrictions
temporal 1974-07-01T00:00:00+00:00/2020-03-01T00:00:00+00:00
theme 
[
  "geospatial"
]
title NOAA Space Environment Monitor (SEM) Science-Quality Solar X-Ray Sensor (XRS) Data from GOES 1-15

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