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

GOES-R EXIS L2

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.
  • 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.
  • https://doi.org/10.25921/94P8-YE57
gov.noaa.ncei.swx:exis-l2-goesr
Download Data
Distribution Formats
  • netCDF-4
    • File Compression: gzip
Distributor Margaret Tilton
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 303-497-6826
goesr.spaceweatherdata@noaa.gov
Dataset author Janet Machol
Instrument Scientist
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
goesr.exis@noaa.gov
Coverage Description Non-geographic dataset
Time Period 2017-12-19 to Present
Spatial Bounding Box Coordinates Bounding coordinates not available
Dataset Information
Processing Documents
  • GOES-R EXIS L2 Algorithm Theoretical Basis Documents (ATBDs)
    Publication Dates
    • publication: 2018-09-01
    Data Presentation Form Digital image
    Dataset Progress Status Ongoing - data is continually being updated
    Data Update Frequency Continual
    Purpose EXIS L2 data allow space weather forecasters and modelers to track solar activity such as solar radiation storms. These events can in expose astronauts to radiation, impact satellite operations, and interfere with radio communications.
    Use Limitations
    • 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.
    Dataset Citation
    • 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.
    Cited Authors
    • Janet Machol
      DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Collaborators
    • Stefan Codrescu
      DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • Rodney Viereck
      DOC/NOAA/NWS/SWPC > Space Weather Prediction Center, National Weather Service, NOAA, U.S. Department of Commerce
    Publishers
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Theme keywords NASA Global Change Master Directory (GCMD) Science and Services Keywords
    • EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR IRRADIANCE
    • EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR ULTRAVIOLET EMISSIONS
    • EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR X-RAY EMISSIONSX
    Data Center keywords
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Platform keywords NASA Global Change Master Directory (GCMD) Platform Keywords
    • Solar/Space Observation Satellites > GOES (Geostationary Operational Environmental Satellite)
    Instrument keywords NASA Global Change Master Directory (GCMD) Instrument Keywords
    • Solar/Space Observing Instruments > Ultraviolet Instruments > > > EXIS-EUVS-GOESR
    NASA Global Change Master Directory (GCMD) Instrument Keywords
    • Solar/Space Observing Instruments > X-Ray/Gamma Ray Detectors > > > EXIS-XRS-GOESR
    Place keywords NASA Global Change Master Directory (GCMD) Location Keywords
    • SPACE > EARTH MAGNETIC FIELD > MAGNETOSPHERE (OTHER)
    Project keywords NASA Global Change Master Directory (GCMD) Project Keywords
    • GOES > Geostationary Operational Environmental Satellites
    • NOAA OneStop Project
    Stratum keywords NASA Global Change Master Directory (GCMD) Location Keywords
    • SPACE > EARTH MAGNETIC FIELD > MAGNETOSPHERE (OTHER)
    Use 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.
    Fees
    • Electronic downloads of the data are free; however, fees may apply for data certifications and data distribution on physical media.
    Lineage information for: dataset
    Lineage Statement This dataset was produced by NESDIS, and is archived at the NOAA National Centers for Environmental Information (NCEI).
    Processor
    • National Centers for Environmental Information (NCEI)
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Processing Steps
    • Please contact goesr.exis@noaa.gov for information about the L2 processing algorithms.
    • Creation of GOES-R EXIS L2 Products from GOES-R EXIS L1b Products.
      Rationale: Forecasting and Modeling Activities
    Processing Documents
      • GOES-R EXIS L2 Algorithm Theoretical Basis Documents (ATBDs)
      Source Datasets
      Lineage information for: repository
      Processing Steps
      • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
      Last Modified: 2018-09-26
      For questions about the information on this page, please email: goesr.spaceweatherdata@noaa.gov