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International Geomagnetic Reference Field—the eighth generation


The eighth generation of the International Geomagnetic Reference Field (IGRF) was adopted in 1999 by the International Association of Geomagnetism and Aeronomy (IAGA) Division V, Working Group 8. This differs from the previous generation by the addition of the IGRF 2000 which comprises a main-field model for the epoch 2000.0 and a predictive secular-variation model for 2000.0–2005.0. This paper lists the IGRF coefficients and includes contour maps computed using IGRF 2000.


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Correspondence to Mioara Mandea.

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  • Secular Variation
  • Earth Planet Space
  • International Geomagnetic Reference Field
  • British Geological Survey
  • International Geomagnetic Reference