International Geomagnetic Reference Field: the 12th generation

By E. Thébault, Christopher C. Finlay, Ciarán D. Beggan, P. Alken, Julien Aubert, O. Barrois, F. Bertrand, T. Bondar, A. Boness, L. Brocco and 38 more. Earth, Planets and Space, 2015

1,440 citations recorded by the source corpus.

The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA). It updates the previous IGRF generation with a definitive main field model for epoch 2010.0, a main field model for epoch 2015.0, and a linear annual predictive secular variation model for 2015.0-2020.0. Here, we present the equations defining the IGRF model, provide the spherical harmonic coefficients, and provide maps of the magnetic declination, inclination, and total intensity for epoch 2015.0 and their predicted rates of change for 2015.0-2020.0. We also update the magnetic pole positions and discuss briefly the latest changes and possible future trends of the Earth’s magnetic field.

Subfields: Geophysics, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/95ad416cd88031f9151fdbf63c8f96780a4b5fd3

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In Geophysics

1. Han-Li Liu
2. Arthur D. Richmond
3. Astrid Maute
4. R. Roble
5. A. Thomson
6. R. Horne
7. Wenbin Wang
8. N. Pedatella

In Molecular Biology

1. Arthur D. Richmond
2. R. Roble
3. Han-Li Liu
4. Astrid Maute
5. R. Horne
6. Liying Qian
7. R. Thorne
8. Nigel P. Meredith

Citations in the corpus

• Solar Forcing for CMIP6 (v3.1) (2016, neutral): “From 1900 to 2015 magnetic field conversions should use the current IGRF, which at the time of writing is IGRF-12 (Thébault, 2015).”
• Quantifying the daily economic impact of extreme space weather due to failure in electricity transmission infrastructure (2017, methodology): “Data are also used from the U.S. Census Bureau [2010] on the center of the population and are converted from geographical coordinates to 2016 geomagnetic coordinates using the IGRF-12 calculator [Thébault et al., 2015].”
• Development and Validation of the Whole Atmosphere Community Climate Model With Thermosphere and Ionosphere Extension (WACCM‐X 2.0) (2018, methodology): “The electrodynamics are formulated in a modified magnetic apex coordinate system (Richmond, 1995) using a realistic geomagnetic main field which is updated once per year based on the International Geomagnetic Reference Field (IGRF; Th ebault et al., 2015).”