Fig. 9.From: Earth magnetic field modeling from Oersted and Champ dataMap of the radial field at the CMB (r = 3480 km). top: our model computed from 130 days of Champ data centered on 2003.0; middle: POMME-3, Potsdam Magnetic Model of the Earth, centered on 2003.0; bottom: Difference of models. Model degrees 1–13 are used in both cases.Back to article page