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Fig. 12 | Earth, Planets and Space

Fig. 12

From: The CSES global geomagnetic field model (CGGM): an IGRF-type global geomagnetic field model based on data from the China Seismo-Electromagnetic Satellite

Fig. 12

Comparing the CGGM SV and final IGRF-13 2020–2025 predictive SV models. Top: Lowes–Mauersberger spectrum of the difference between the CGGM SV and the final IGRF-13 predictive SV models (CSES, thick black line); also shown are analogous spectra computed for the fourteen candidate SV models (BGS, solid red; CU/NCEI solid green; DTU, solid dark blue; GFZ, solid purple; IPGP, solid light blue; ISTerre, solid yellow; IZMIRAN, solid grey; Japan, red dashed; Leeds, dashed green; Max Planck, dashed dark blue; NASA, dashed purple; Potsdam/MaxPlanck, dashed light blue; Spanish, dashed yellow; Strasbourg, dashed grey); bottom: radial component of the difference between the predictions of the CGGM SV model and the final IGRF-13 2020–2025 predictive SV model; All plots at Earth’s surface. Gauss coefficients are used at the officially required 0.01 nT/yr resolution (closest rounding) for candidate models, and official resolution of 0.1 nT/yr for the final IGRF-13 predictive SV model (as published in Alken et al. 2020b)

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