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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.
Other Access Online access information not available.
Distribution Formats Format not available
    Distributor Distributor information not available
    Dataset No POCs available for this dataset
    Documentation links not available.
    • 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.
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, 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
    Theme keywords NASA/GCMD Earth Science Keywords
    • Earth Science > Interior & Crust
    • Space Physics > Magnetospheric Science
    • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
    Uncontrolled Keywords
    • Indices
    Place keywords NASA/GCMD Location Keywords
    • Global
        Use Constraints
        • Use Constraints: None
        Access Constraints
        • Access Constraints: No Constraints
        • Depends on the Data Set
        Last Modified: 2015-09-18
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