supported by the National Natural Science Foundation of China (Grant Nos. 40931056, 40874089);the National Basic Research Program of China ("973" Project) (Grant Nos. 2008CB425704)
The energy budget of the magnetosphere-ionosphere (MI) system during 1998-2008 was examined by using Akasofu's epsilon function. The results showed that 1) the yearly average rate of solar wind energy input into the M...