The International Geomagnetic Reference Field (IGRF) is a standard mathematical description of the Earth's main magnetic field. It is used widely in studies of the Earth's deep interior, crust, ionosphere, and magnetosphere. The model is developed and maintained by the International Association of Geomagnetism and Aeronomy (IAGA).
14th Generation Release
The coefficients for the 14th generation of IGRF model were finalized by an IAGA task force in November 2024. The IGRF is the product of a collaborative effort between magnetic field modelers and the institutes involved in collecting and disseminating magnetic field data collected from satellites, observatories, and surveys around the world. Please review the Model Health Warning before using the IGRF.
IGRF-14 Coefficient File (Text File) [+ CIRES link]
IGRF-14 Coefficient File (Spreadsheet) [+ CIRES link]
IGRF-14.COF (Windows, Linux) [+ CIRES link]
Citation
Alken, P., Thébault, E., Beggan, C.D. et al. International Geomagnetic Reference Field: the thirteenth generation. Earth Planets Space 73, 49 (2021). https://10.1186/s40623-020-01288-x