International Association of Geomagnetism and Aeronomy International Union of Geodesy and Geophysics
Working Group V-MOD: Geomagnetic Field Modelling
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At the 2003 General Assembly in Sapporo, IAGA Division V reorganized. What was formerly Working Group V-8 is now V-MOD: Geomagnetic Field Modeling. The aim of Working Group V-MOD of Division V is to promote and coordinate international efforts to model and analyze the internal geomagnetic field and its secular variation on both global and regional scales. The Working Group holds business meetings and arranges symposiums at IAGA Scientific Assemblies and IUGG General Assemblies. You can read a brief history of WG V-MOD.

The latest International Geomagnetic Reference Field (IGRF-12 ) is released! Download the model file here. The file format remains the same as the previous IGRF coefficient file.

Business Meetings Minutes

IAGA Resolutions


Repeat Stations

Home page of WDMAM

12th Generation IGRF - Released December, 2014
The International Association of Geomagnetism and Aeronomy (IAGA) released the 12 th Generation International Geomagnetic Reference Field – the latest version of a standard mathematical description of the Earth's main magnetic field and used widely in studies of the Earth's deep interior, its crust and its ionosphere and magnetosphere. The coefficients for this degree and order 13 main field model were finalized by a task force of IAGA in December 2014. The IGRF is the product of a collaborative effort between magnetic field modellers and the institutes involved in collecting and disseminating magnetic field data from satellites and from observatories and surveys around the world. Before using the IGRF please look at the "Health Warning".

The latest International Geomagnetic Reference Field Model - IGRF-12 - is also available for download.

Task Group for the World Digital Magnetic Anomaly Map Project

Chair: Chris Finlay

Division of Geomagnetism
DTU Space, Technical University of Denmark
Electrovej 327
2800 Kngs. Lyngby, Denmark
Tel: +45- 45- 259713
Fax: +45- 45 259575

Co-Chair: Erwan Thébault

Chargé de Recherche
Équipe de Géomagnétisme
1, rue Jussieu - 75238 Paris cedex 05 - France
Tel: +33 1 83 95 74 84
Fax: +33 1 44 27 37 77

For page content questions please contact: Chris Finlay
Webpage Maintained by: Manoj Nair
Hosted by: World Data Center

Revised: 20 September 2011

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