Earth, Planets and Space ( IF 3.0 ) Pub Date : 2021-02-11 , DOI: 10.1186/s40623-020-01288-x P. Alken , E. Thébault , C. D. Beggan , H. Amit , J. Aubert , J. Baerenzung , T. N. Bondar , W. J. Brown , S. Califf , A. Chambodut , A. Chulliat , G. A. Cox , C. C. Finlay , A. Fournier , N. Gillet , A. Grayver , M. D. Hammer , M. Holschneider , L. Huder , G. Hulot , T. Jager , C. Kloss , M. Korte , W. Kuang , A. Kuvshinov , B. Langlais , J.-M. Léger , V. Lesur , P. W. Livermore , F. J. Lowes , S. Macmillan , W. Magnes , M. Mandea , S. Marsal , J. Matzka , M. C. Metman , T. Minami , A. Morschhauser , J. E. Mound , M. Nair , S. Nakano , N. Olsen , F. J. Pavón-Carrasco , V. G. Petrov , G. Ropp , M. Rother , T. J. Sabaka , S. Sanchez , D. Saturnino , N. R. Schnepf , X. Shen , C. Stolle , A. Tangborn , L. Tøffner-Clausen , H. Toh , J. M. Torta , J. Varner , F. Vervelidou , P. Vigneron , I. Wardinski , J. Wicht , A. Woods , Y. Yang , Z. Zeren , B. Zhou
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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.
中文翻译：
国际地磁参考领域：第十三代
2019年12月，国际地磁与航空学会（IAGA）第五分工作组（V-MOD）通过了第十三代国际地磁参考场（IGRF）。该IGRF更新了上一代，其中包括针对时期2015.0的确定性主场模型，针对时期2020.0的主场模型以及针对2020.0至2025.0的预测线性长期变化。这封信提供了定义IGRF的方程式，此第十三代模型的球谐系数，时期2020.0的磁偏角，倾角和总磁场强度图，以及它们在2020.0至2025.0时间段内的预测变化率图。
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