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International Geomagnetic Reference Field: the eleventh generation

Geophysical Journal International · 2010 · Vol. 183(3) · pp. 1216–1230

Christopher C. Finlay✉(ETH Zurich)S. Maus(University of Colorado Boulder)Ciarán Beggan(British Geological Survey)T. N. Bondar(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation)Aude Chambodut(Centre National de la Recherche Scientifique)Tatiana A. Chernova(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation)Arnaud Chulliat(Centre National de la Recherche Scientifique)V. P. Golovkov(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation)Brian Hamilton(British Geological Survey)Mohamed Hamoudi(GFZ Helmholtz Centre for Geosciences)R. Holme(University of Liverpool)Gauthier Hulot(Centre National de la Recherche Scientifique)Weijia Kuang(Goddard Space Flight Center)B. Langlais(Centre National de la Recherche Scientifique)Vincent Lesur(GFZ Helmholtz Centre for Geosciences)F. J. Lowes(University of Newcastle Australia)H. Lühr(GFZ Helmholtz Centre for Geosciences)S. Macmillan(British Geological Survey)Mioara Mandéa(Délégation Paris 7)Scott P McLean(University of Colorado Boulder)C. Manoj(University of Colorado Boulder)M. Menvielle(Centre National de la Recherche Scientifique)Ingo Michaelis(GFZ Helmholtz Centre for Geosciences)Nils Olsen(DTU Space)Jan Rauberg(GFZ Helmholtz Centre for Geosciences)M. Rother(GFZ Helmholtz Centre for Geosciences)Terence J. Sabaka(Goddard Space Flight Center)Andrew Tangborn(University of Maryland, Baltimore County)Lars Tøffner‐Clausen(DTU Space)Erwan Thébault(Centre National de la Recherche Scientifique)Alan Thomson(British Geological Survey)I. Wardinski(GFZ Helmholtz Centre for Geosciences)Zigang Wei(University of Maryland, Baltimore County)T. I. Zvereva(Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation)

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Abstract

The eleventh generation of the International Geomagnetic Reference Field (IGRF)was adopted in December 2009 by the International Association of Geomagnetism and Aeronomy Working Group V-MOD. It updates the previous IGRF generation with a definitive main field model for epoch 2005.0, a main field model for epoch 2010.0, and a linear predictive secular variation model for 2010.0–2015.0. In this note the equations defining the IGRF model are provided\nalong with the spherical harmonic coefficients for the eleventh generation. Maps of the magnetic declination, inclination and total intensity for epoch 2010.0 and their predicted rates of change for 2010.0–2015.0 are presented. The recent evolution of the South Atlantic Anomaly\nand magnetic pole positions are also examined.

Geomagnetism and Paleomagnetism Studies Geology and Paleoclimatology Research Geophysical and Geoelectrical MethodsEleventhEarth's magnetic fieldGeologyGeodesyField (mathematics)GeophysicsMathematicsMagnetic fieldPhysics

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