Abstract

In December 2019, the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD) adopted the thirteenth generation of the International Geomagnetic Reference Field (IGRF). This IGRF updates the previous generation with a definitive main field model for epoch 2015.0, a main field model for epoch 2020.0, and a predictive linear secular variation for 2020.0 to 2025.0. This letter provides the equations defining the IGRF, the spherical harmonic coefficients for this thirteenth generation model, maps of magnetic declination, inclination and total field intensity for the epoch 2020.0, and maps of their predicted rate of change for the 2020.0 to 2025.0 time period.

Details

Title
International Geomagnetic Reference Field: the thirteenth generation
Author
Alken, P 1   VIAFID ORCID Logo  ; Thébault, E 2 ; Beggan, C D 3 ; Amit, H 2 ; Aubert, J 4 ; Baerenzung, J 5 ; Bondar, T N 6 ; Brown, W J 3 ; Califf, S 1 ; Chambodut, A 7 ; Chulliat, A 1 ; Cox, G A 3 ; Finlay, C C 8 ; Fournier, A 9 ; Gillet, N 10 ; Grayver, A 11 ; Hammer, M D 8 ; Holschneider, M 5 ; Huder, L 10 ; Hulot, G 12 ; Jager, T 13 ; Kloss, C 8 ; Korte, M 14 ; Kuang, W 15 ; Kuvshinov, A 11 ; Langlais, B 2 ; J-M, Léger 13 ; Lesur, V 16 ; Livermore, P W 17 ; Lowes, F J 18 ; Macmillan, S 3 ; Magnes, W 19 ; Mandea, M 20 ; Marsal, S 21 ; Matzka, J 14 ; Metman, M C 17 ; Minami, T 22 ; Morschhauser, A 14 ; Mound J E 17 ; Nair, M 1 ; Nakano, S 23 ; Olsen, N 8 ; Pavón-Carrasco, F J 24 ; Petrov, V G 6 ; Ropp, G 25 ; Rother, M 14 ; Sabaka, T J 15 ; Sanchez, S 26 ; Saturnino, D 2 ; Schnepf, N R 1 ; Shen, X 27 ; Stolle, C 14 ; Tangborn, A 15 ; Tøffner-Clausen, L 8 ; Toh, H 28 ; Torta, J M 21 ; Varner, J 1 ; Vervelidou, F 14 ; Vigneron, P 29 ; Wardinski, I 7 ; Wicht, J 26 ; Woods, A 1 ; Yang, Y 27 ; Zeren, Z 27 ; Zhou, B 30 

1  University of Colorado Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, USA (GRID:grid.266190.a) (ISNI:0000000096214564); NOAA National Centers for Environmental Information, Boulder, USA (GRID:grid.454206.1) 
2  Université de Nantes, Université d’Angers, CNRS, Laboratoire de Planétologie et Géodynamique, UMR 6112, Nantes, France (GRID:grid.4817.a) 
3  British Geological Survey, The Lyell Centre, Edinburgh, UK (GRID:grid.474329.f) (ISNI:0000 0001 1956 5915) 
4  Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France (GRID:grid.4817.a) 
5  University of Potsdam, Potsdam, Germany (GRID:grid.11348.3f) (ISNI:0000 0001 0942 1117) 
6  Ionosphere and Radio Wave Propagation, Pushkov Institute of Terrestrial Magnetism, Moscow, Russia (GRID:grid.435423.7) (ISNI:0000 0001 0743 2146) 
7  Université de Strasbourg/EOST, CNRS, UMR 7516, Institut de Physique du Globe de Strasbourg, Strasbourg, France (GRID:grid.4444.0) (ISNI:0000 0001 2112 9282) 
8  Division of Geomagnetism, DTU Space, Technical University of Denmark, Kongens Lyngby, Denmark (GRID:grid.5170.3) (ISNI:0000 0001 2181 8870) 
9  Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France (GRID:grid.5170.3) 
10  Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, France (GRID:grid.4444.0) (ISNI:0000 0001 2112 9282) 
11  ETH Zurich, Institute of Geophysics, Department of Earth Sciences, Zurich, Switzerland (GRID:grid.5801.c) (ISNI:0000 0001 2156 2780) 
12  Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France (GRID:grid.4444.0) 
13  CEA-Leti, Grenoble, France (GRID:grid.457330.6) 
14  GFZ German Research Centre for Geosciences, Potsdam, Germany (GRID:grid.23731.34) (ISNI:0000 0000 9195 2461) 
15  NASA/Goddard Space Flight Center, Greenbelt, USA (GRID:grid.133275.1) (ISNI:0000 0004 0637 6666) 
16  Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France (GRID:grid.457330.6) 
17  University of Leeds, School of Earth and Environment, Leeds, UK (GRID:grid.9909.9) (ISNI:0000 0004 1936 8403) 
18  University of Newcastle, Newcastle upon Tyne, UK (GRID:grid.1006.7) (ISNI:0000 0001 0462 7212) 
19  Austrian Academy of Sciences, Space Research Institute, Graz, Austria (GRID:grid.4299.6) (ISNI:0000 0001 2169 3852) 
20  Centre National d’Etudes Spatiales, Paris, France (GRID:grid.13349.3c) (ISNI:0000 0001 2201 6490) 
21  Observatori de l’Ebre (OE), Univ. Ramon Llull - CSIC, Roquetes, Spain (GRID:grid.6162.3) (ISNI:0000 0001 2174 6723) 
22  Nagoya University, Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya, Japan (GRID:grid.27476.30) (ISNI:0000 0001 0943 978X); Kobe University, Department of Planetology, Graduate School of Science, Kobe, Japan (GRID:grid.31432.37) (ISNI:0000 0001 1092 3077) 
23  Department of Statistical Modeling, The Institute of Statistical Mathematics, Tokyo, Japan (GRID:grid.418987.b) (ISNI:0000 0004 1764 2181) 
24  Universidad Complutense de Madrid, Madrid, Spain (GRID:grid.4795.f) (ISNI:0000 0001 2157 7667); Geoscience Institute IGEO, Madrid, Spain (GRID:grid.473617.0) 
25  Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France (GRID:grid.435423.7) 
26  Max Planck Institute for Solar System Research, Göttingen, Germany (GRID:grid.435826.e) (ISNI:0000 0001 2284 9011) 
27  China Earthquake Administration, Institute of Crustal Dynamics, Beijing, China (GRID:grid.450296.c) (ISNI:0000 0000 9558 2971) 
28  Kyoto University, Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto, Japan (GRID:grid.258799.8) (ISNI:0000 0004 0372 2033) 
29  Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France (GRID:grid.23731.34) 
30  Chinese Academy of Sciences, State Key Laboratory of Space Weather, National Space Science Center, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
Publication year
2021
Publication date
Feb 2021
Publisher
Springer Nature B.V.
e-ISSN
18805981
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1186/s40623-020-01288-x
ProQuest document ID
2488351652
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.