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Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide

Data provided by  National Oceanic and Atmospheric Administration

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.

About this Dataset

Updated: 2024-02-22
Metadata Last Updated: 2025-11-19T15:45:21.300Z
Date Created: N/A
Data Provided by:
Dataset Owner: N/A

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Title Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide
Description 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.
Modified 2025-11-19T15:45:21.300Z
Publisher Name N/A
Contact N/A
Keywords EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles , EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Declination , EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Intensity , Earth Science > Interior & Crust , Geomagnetism , Geomagnetic Components , ICSU-WDS > International Council for Science - World Data System , Global , 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 , geoscientificInformation 
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