Magnetic Field Calculator

The Magnetic Field Calculator will calculate the total magnetic field, including components (declination, inclination, horizontal intensity, northerly intensity, easterly intensity, vertical intensity) and the annual change for each. Each calculation is for a specific location, elevation and date or range of dates. The calculated result can be obtained from two separate geomagnetic models, the IGRF11 or the WMM2010. Declination is calculated using the current World Magnetic Model (WMM) or International Geomagnetic Reference Field (IGRF) model. While results are typically accurate to 30 minutes of arc, users should be aware that several environmental factors can cause disturbances in the magnetic field.

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.mgg.geophysical_models:Magnetic_Field_Calculator
language {en-US}
modified 2009-12-01
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/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 0b443e5910013d992b548c96dbab393c5e314595
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]]]}
temporal 1900-01-01T00:00:00/2014-12-31T00:00:00
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • doc-noaa-nesdis-ncei-national-centers-for-environmental-information
  • doc-noaa-nesdis-ngdc-national-geophysical-data-center
  • earth-science-solid-earth-geomagnetism-magnetic-declination
  • earth-science-solid-earth-geomagnetism-magnetic-field
  • earth-science-solid-earth-geomagnetism-magnetic-inclination
  • earth-science-solid-earth-geomagnetism-magnetic-intensity
  • geo
  • geographic-region-global
  • geoss
  • national
  • nesdis
  • noaa
  • north-america
  • u-s-department-of-commerce
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
maintainer_email geomag.models@noaa.gov
metadata_created 2025-11-22T05:28:17.616256
metadata_modified 2025-11-22T05:28:17.616259
notes The Magnetic Field Calculator will calculate the total magnetic field, including components (declination, inclination, horizontal intensity, northerly intensity, easterly intensity, vertical intensity) and the annual change for each. Each calculation is for a specific location, elevation and date or range of dates. The calculated result can be obtained from two separate geomagnetic models, the IGRF11 or the WMM2010. Declination is calculated using the current World Magnetic Model (WMM) or International Geomagnetic Reference Field (IGRF) model. While results are typically accurate to 30 minutes of arc, users should be aware that several environmental factors can cause disturbances in the magnetic field.
num_resources 4
num_tags 18
title Magnetic Field Calculator