Spherical Harmonic Analysis of Short-Term Variability in the External and Induced Geomagnetic Field, with Supermag.
Friday, 19 December 2014
We present a methodology for developing spherical harmonic models of short-term variations in the external and induced geomagnetic field. The method uses data from the SuperMAG global magnetometer network, which is provided at 1-minute time resolution. We examine some of the technical challenges encountered in the method development and some initial results are discussed. Results are compared with those from a climatological study running in parallel, which also utilizes SuperMAG data.