Fig. 1From: Solar wind parameter and seasonal variation effects on the South Atlantic Anomaly using Tsyganenko ModelsSAA Parameters' Illustration. The SAA variables are displayed in two different views. The contours in a are colored based on the energetic particle (= radiation) population (light red for the high population and light blue for the low population). b, c roughly demonstrate the movement and the expansion of the SAA, respectivelyBack to article page