• Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide

    Updated: May 29, 2014

    This file is comprised of absolute mean hourly values of the geomagnetic components D, H and Z or X, Y and Z. These values, on magnetic tape, are available from approximately 220 of the 400 worldwide observatories which have ever operated. Most of the values were hand-scaled from the analog recordings (magnetograms) and were added to the file via punched cards. From some observations, for more recent years, there are means of values recorded directly on magnetic tape from digital magnetometers at various sample rates, for example, each minute. The accuracy of these data varies but is generally good, particularly for the more recent years. Approximately 60 observation-years of these data are added to the files each year.

    Data and Resources

    Metadata Source

    Harvested from NGDC - STP - Geomag - iso

    About this Dataset

    Resource Type Dataset
    Metadata Date May 28, 2013
    Metadata Created Date Aug 20, 2013
    Metadata Updated Date May 29, 2014
    Reference Date(s) Jan 01, 1957 (publication)
    Responsible Party DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
    Contact Email
    Access Constraints Use Constraints: None, Access Constraints: No Constraints
    Bbox East Long 180.000000
    Bbox North Lat 90.000000
    Bbox South Lat -90.000000
    Bbox West Long -180.000000
    Coupled Resource
    Frequency Of Update irregular
    Guid gov.noaa.ngdc.stp.geomag:G00002
    Harvest Object Id 024a8d51-13bc-4619-8b86-18057b5a92ef
    Harvest Source Id 21ab3ced-499d-4f59-bb62-448fe06ef827
    Harvest Source Title NGDC - STP - Geomag - iso
    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
    Metadata Type geospatial
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1902-01-02

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