The Mid-Term Forecast Method of F10.7 Based on Extreme Ultraviolet Images
Figure 10
The F10.7 forecast results of two cases: 25 March 2013 (a, b, c) and 28 February 2012 (d, e, f). (a, d) Scatter diagrams of the 14 CRs’ previous values of F10.7 and (black diamonds), and the future 27-day values of F10.7 and (red diamonds). The solid blue line with asterisks is the fitted function. R is the correlation coefficient between fitted Y and F10.7. (b, e) Comparison of (solid blue line), W304 (dashed blue line), S304 (dashed-dot red line), and F10.7 (solid black line) in previous (negative value in horizontal axis) and future (positive value in horizontal axis) 27 days of that test date (zero in horizontal axis). (c, f) The value of observed F10.7 (black line) and predictive F10.7 obtained from the 54th-order AR-model (green line) and our method (red line) in future (positive value in the horizontal axis) 27 days.