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Values for the 15-minute Index of Geomagnetic Activity at High Latitude Stations (Geomagnetic Latitude 58 Degrees)

The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) receives, on a monthly basis, Q indices from Sodankyla. These data are available from July 1957 to the present. Sodankyla indices are the most complete records of Q indices that NCEI has. The archive also contains Q indices from 15 other observatories. The Q index is a measure of geomagnetic activity assigned by high latitude (geomagnetic latitude > 58 degrees) geomagnetic observatories for each 15 minute interval. The index is designed to study auroral and ionospheric phenomena over a time scale smaller than that possible with KP. The Q scale is loosely logarithmic, with possible values from 0 to 11.
Cite this dataset when used as a source.
Online Access
  • Online access is not available for this resource
Distribution Formats Format not available
    Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Dataset Point of Contact Justin Mabie
    Space and Terrestrial Weather Specialist
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    (303) 497-6135
    Justin.Mabie@noaa.gov
    Documentation links not available.
    Date(s)
    • publication: 1957-01-01
    Edition: First
    Dataset Progress Status Under development
    Data Update Frequency: Irregular
    Purpose: Geomagnetic Activity Research
    Use Limitations
    • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA 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. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    Originator(s)
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Publisher(s)
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Time Period: 1957-07-01 to Present
    Spatial Bounding Box Coordinates:
    N: 90.000000
    S: 58.000000
    E: 180.000000
    W: -180.000000
    Spatial Coverage Map:
    Theme keywords
    • Earth Science > Interior & Crust
    • Space Physics > Magnetospheric Science
    • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
    • Indices
    Data Center keywords
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Place keywords
    • Global
    Project keywords
    • ICSU-WDS > International Council for Science - World Data System
    Use Constraints
    • Use Constraints: None
    Access Constraints
    • Access Constraints: No Constraints
    Fees
    • Depends on the Data Set
    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: 2015-09-18
    For questions about the information on this page, please email: Justin.Mabie@noaa.gov