The Mid-Term Forecast Method of F_10.7 Based on Extreme Ultraviolet Images

Figure 4

The 304 Å EUV image on 27 March 2013 from the combination of the 304 Å data from SDO/AIA with the data from the twin STEREO/EUVI. The coordinate is Carrington Heliography. The green regions represent the SRs of F_10.7, in which the pixel intensity is greater than or equal to 10^3.2 DN/s. The gold plus signs represent the projected position of Earth at 27 March 2013 (in day 0) and within 1-27 days later.