International Geomagnetic Reference Field

The IGRF is a global model of the geomagnetic field. It allows spot values of the geomagnetic field vector to be calculated anywhere from the Earth's core out into space. The IGRF is generally revised every five years by a group of modellers associated with the International Association of Geomagnetism and Aeronomy (IAGA).

Data and Resources

Additional Info

Field Value
Last Updated December 10, 2025, 11:43 (UTC)
Created June 30, 2017, 08:16 (UTC)