International Geomagnetic Reference Field: the thirteenth generation

Alken, P.; Thébault, E.; Beggan, C. D.; Amit, H.; Aubert, J.; Baerenzung, J.; Bondar, T. N.; Brown, W. J.; Califf, S.; Chambodut, A.; Chulliat, A.; Cox, G. A.; Finlay, C. C.; Fournier, A.; Gillet, N.; Grayver, A.; Hammer, M. D.; Holschneider, M.; Huder, L.; Hulot, G.; Jager, T.; Kloss, C.; Korte, M.; Kuang, W.; Kuvshinov, A.; Langlais, B.; Léger, J.-M.; Lesur, V.; Livermore, P. W.; Lowes, F. J.; Macmillan, S.; Magnes, W.; Mandea, M.; Marsal, S.; Matzka, J.; Metman, M. C.; Minami, T.; Morschhauser, A.; Mound, J. E.; Nair, M.; Nakano, S.; Olsen, N.; Pavón-Carrasco, F. J.; Petrov, V. G.; Ropp, G.; Rother, M.; Sabaka, T. J.; Sanchez, Sabrina; Saturnino, D.; Schnepf, N. R.; Shen, X.; Stolle, C.; Tangborn, A.; Tøffner-Clausen, L.; Toh, H.; Torta, J. M.; Varner, J.; Vervelidou, F.; Vigneron, P.; Wardinski, I.; Wicht, Johannes; Woods, A.; Yang, Y.; Zhou, Z. Zeren & B.

doi:10.1186/s40623-020-01288-x

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International Geomagnetic Reference Field: the thirteenth generation

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Sanchez, Sabrina
Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;

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Wicht, Johannes
Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;

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Citation

Alken, P., Thébault, E., Beggan, C. D., Amit, H., Aubert, J., Baerenzung, J., et al. (2021). International Geomagnetic Reference Field: the thirteenth generation. Earth, Planets, and Space, 73: 49. doi:10.1186/s40623-020-01288-x.

Cite as: https://hdl.handle.net/21.11116/0000-0008-2FA9-6

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.