International Geomagnetic Reference Field: the 12th generation

Erwan Thébault(Laboratoire de Planétologie et Géosciences), Christopher C. Finlay(Technical University of Denmark), Ciarán Beggan(British Geological Survey), Patrick Alken(Cooperative Institute for Research in Environmental Sciences), Julien Aubert(Centre National de la Recherche Scientifique), Olivier Barrois(Université Grenoble Alpes), F. Bertrand(Université Grenoble Alpes), Tatiana Bondar(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation), Axel Boness(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), L. Brocco(Institut de physique du globe de Paris), Elisabeth Canet(ETH Zurich), Aude Chambodut(Centre National de la Recherche Scientifique), Arnaud Chulliat(Cooperative Institute for Research in Environmental Sciences), Pierdavide Coïsson(Institut de physique du globe de Paris), François Civet(Centre National de la Recherche Scientifique), Aimin Du(Chinese Academy of Sciences), Alexandre Fournier(Centre National de la Recherche Scientifique), Isabelle Fratter(Centre National d'Études Spatiales), Nicolas Gillet(Université Grenoble Alpes), Brian Hamilton(British Geological Survey), Mohamed Hamoudi(GFZ Helmholtz Centre for Geosciences), Gauthier Hulot(Centre National de la Recherche Scientifique), Thomas Jäger(Institut polytechnique de Grenoble), Monika Korte(GFZ Helmholtz Centre for Geosciences), Weijia Kuang, Xavier Lalanne(Centre National de la Recherche Scientifique), B. Langlais(Laboratoire de Planétologie et Géosciences), Jean-Michel Léger(Université Grenoble Alpes), Vincent Lesur(GFZ Helmholtz Centre for Geosciences), F. J. Lowes(Newcastle University), Susan Macmillan(British Geological Survey), Mioara Mandéa(Centre National d'Études Spatiales), Chandrasekharan Manoj(NOAA National Centers for Environmental Information), S. Maus(Cooperative Institute for Research in Environmental Sciences), Nils Olsen(Technical University of Denmark), V. G. Petrov(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation), Victoria Ridley(British Geological Survey), M. Rother(GFZ Helmholtz Centre for Geosciences), Terence J. Sabaka, Diana Saturnino(Nantes Université), Reyko Schachtschneider(GFZ Helmholtz Centre for Geosciences), Olivier Sirol(Sorbonne Paris Cité), Andrew Tangborn(Systems Technology (United States)), Alan Thomson(British Geological Survey), Lars Tøffner‐Clausen(Technical University of Denmark), P. Vigneron(Institut de physique du globe de Paris), I. Wardinski(GFZ Helmholtz Centre for Geosciences), T. I. Zvereva(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation)
Earth Planets and Space
May 26, 2015
10.1186/s40623-015-0228-9
Cited by 1,546Open Access
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Abstract

The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA). It updates the previous IGRF generation with a definitive main field model for epoch 2010.0, a main field model for epoch 2015.0, and a linear annual predictive secular variation model for 2015.0-2020.0. Here, we present the equations defining the IGRF model, provide the spherical harmonic coefficients, and provide maps of the magnetic declination, inclination, and total intensity for epoch 2015.0 and their predicted rates of change for 2015.0-2020.0. We also update the magnetic pole positions and discuss briefly the latest changes and possible future trends of the Earth’s magnetic field.

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