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

Metadata Updated: September 16, 2022

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.

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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.

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Metadata Date September 18, 2015
Metadata Created Date September 16, 2022
Metadata Updated Date September 16, 2022
Reference Date(s) January 1, 1957 (publication)
Frequency Of Update irregular

Metadata Source

Harvested from NGDC STP Indices

Additional Metadata

Resource Type Dataset
Metadata Date September 18, 2015
Metadata Created Date September 16, 2022
Metadata Updated Date September 16, 2022
Reference Date(s) January 1, 1957 (publication)
Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Guid gov.noaa.ngdc.stp.indices:G00592
Access Constraints Use Constraints: None, Access Constraints: No Constraints
Bbox East Long 180.000000
Bbox North Lat 90.000000
Bbox South Lat 58.000000
Bbox West Long -180.000000
Coupled Resource
Frequency Of Update irregular
Harvest Object Id 82f30667-4696-4f56-bd39-303a7ce12ca8
Harvest Source Id 8fcc91fb-3399-4b06-abea-b4dadb7df9b7
Harvest Source Title NGDC STP Indices
Licence 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.
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, 58.0], [180.0, 58.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, 58.0]]]}
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1957-07-01

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