Fig. 2From: Applications for CryoSat-2 satellite magnetic data in studies of Earth’s core field variationsTime series of annual differences of the spherical polar field components of CryoSat-2 GVO time series derived using CHAOS-6-x9 (red) and IGRF-13 (blue) calibration along with GCV spline fits at the three example grid locations: 26 (top), 100 (center) and 140 (bottom). Also shown are IGRF-13 (black) and CHAOS6-x9 predictions (green)Back to article page