International geomagnetic reference field: the fourteenth generation

Earth Planets and Space 2026 Open access

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Authors: Ciarán Beggan, C. Kloss, P. Amblard, T. Amezza, H. Amit, Aubert Jp, J. Baerenzung, J. Bregnhøj Lauridsen, W. Brown, S. Califf, S.A. Campuzano, L. Chauvet
+73 more A. Chulliat, R. Claveau, P. Coïsson, M. da Silva, C Davies, R. Deborde, M. Dobrovolsky, M. Fillion, C. C. Finlay, I. Firsov, A. Fournier, L. Gailler, N. Gillet, N. Gomez Perez, A. Grayver, K. Gwirtz, M. Hamoudi, R. Holme, M. Holschneider, G. Hulot, T. Jager, Y. Jiang, M. Kada, M. Korte, R. Krasnoperov, W. Kuang, D. Kudin, J.M. Leger, A. Lemgharb, V. Lesur, P. Liu, P. W. Livermore, F D Madsen, M Mandea, M. Matsushima, J. Matzka, I. Michaelis, T. Minami, M. Nair, S. Nakano, J-F. Oehler, N. Olsen, F. J. Pavón-Carrasco, S. Presnyakov, B. Qian, X. Rang, H. F. Rogers, M Rother, D. Rouxel, T. Sabaka, S Sato, J. Saynisch-Wagner, M. Schanner, M. Serrano, N. Shakespeare-Rees, Y. Shi, A. Smith, A. Soloviev, F. Terra-Nova, E. Thebault, L. Tøffner-Clausen, H. Toh, J. Wang, I. Wardinski, C. Watson, K. Whaler, C. Xiong, Q. Yan, Y. Yang, H. Yao, Z. Zeren, K C Zhang, B. Zhou
DOI: 10.1186/s40623-025-02360-0
Cited by: 3
References: 42

Abstract

Abstract In November 2024, the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD) adopted the fourteenth generation of the International Geomagnetic Reference Field (IGRF). This IGRF updates the previous generation with a definitive main field model for epoch 2020.0, a main field model for epoch 2025.0, and a predictive linear secular variation for 2025.0 to 2030.0. We describe the equations defining the IGRF, the spherical harmonic coefficients for this fourteenth generation model, maps of magnetic declination, inclination, and total field intensity for the model at 2025.0 and maps of the predicted rate of change of the field for the 2025.0 to 2030.0 time period.

Fields of Study & Subjects

Geomagnetism and Paleomagnetism Studies Ionosphere and magnetosphere dynamics Earthquake Detection and Analysis

Publication details

Journal / source
Earth Planets and Space
Publisher
Springer Science and Business Media LLC
Volume
78
Issue
1
Publication date
29 June 2026
Language
EN