Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide

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

Field Value
accessLevel public
accrualPeriodicity irregular
bureauCode {006:48}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier gov.noaa.ngdc.stp.geomag:G00002
language {en-US}
modified 1957-01-01
old-spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
programCode {006:059}
publisher DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 3255fc5b622e9ecfb824d9ecf760dca1d2ca09fe
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • boulder
  • boulder-world-data-center-for-solar-terrestrial-physics
  • ckan
  • doc-noaa-nesdis-ngdc-national-geophysical-data-center
  • earth-science-interior-crust
  • earth-science-solid-earth-geomagnetism-magnetic-declination
  • earth-science-solid-earth-geomagnetism-magnetic-intensity
  • earth-science-sun-earth-interactions-ionosphere-magnetosphere-particles
  • geo
  • geomagnetic-components
  • geomagnetism
  • geoss
  • global
  • national
  • nesdis
  • noaa
  • north-america
  • u-s-department-of-commerce
  • united-states
  • wdc-stp
isopen False
license_id notspecified
license_title License not specified
maintainer Justin Mabie
maintainer_email Justin.Mabie@noaa.gov
metadata_created 2025-11-19T20:53:18.674041
metadata_modified 2025-11-19T20:53:18.674052
notes 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.
num_resources 2
num_tags 22
title Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide