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Improving empirical magnetic field models by fitting to in situ data using an optimized parameter approach

A method for comparing and optimizing the accuracy of empirical magnetic field models using in situ magnetic field measurements is presented. The optimization method minimizes a cost function - τ - that explicitly includes both a magnitude and an angular term. A time span of 21 days, including periods of mild and intense geomagnetic activity, was used for this analysis. A comparison between five magnetic field models (T96, T01S, T02, TS04, TS07) widely used by the community demonstrated that the T02 model was, on average, t ...

Brito, Thiago; Morley, Steven;

YEAR: 2017     DOI: 10.1002/2017SW001702

comparison; Empirical Model; magnetic field model; optimization; Van Allen Probes