Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

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

    Metadata Updated: February 23, 2024

    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).

    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 February 13, 2024
    Metadata Created Date February 23, 2024
    Metadata Updated Date February 23, 2024
    Reference Date(s) 1974-07 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NGDC STP Space Weather

    Other Data Resources

    Graphic Preview

    Image of NOAA GOES spacecraft

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 13, 2024
    Metadata Created Date February 23, 2024
    Metadata Updated Date February 23, 2024
    Reference Date(s) 1974-07 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncei.swx:goes_sem-xrs-sci
    Access Constraints Cite as: NOAA Space Environment Monitor (SEM) Science-Quality Solar X-Ray Sensor (XRS) Data from GOES 1-15. [indicate subset used]. NOAA National Centers for Environmental Information. [access date]., Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, 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., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description Image of NOAA GOES spacecraft
    Graphic Preview File https://www1.ncdc.noaa.gov/pub/data/metadata/images/goes-sem.jpg
    Graphic Preview Type JPG
    Harvest Object Id 87f6ade3-531d-4f0d-af03-15094cf7db87
    Harvest Source Id 720e273e-9143-4e92-8a4c-fe2bf3aacd0b
    Harvest Source Title NGDC STP Space Weather
    Licence
    Lineage The data were produced by the NOAA National Centers for Environmental Information (NCEI).
    Metadata Language eng; USA
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System Non geographic dataset
    Spatial Harvester True
    Temporal Extent Begin 1974-07
    Temporal Extent End 2020-03

    Didn't find what you're looking for? Suggest a dataset here.