Cross Comparison of Solar X‐Ray Data Between FY‐2C/D Satellite and GOES Satellite

Abstract

AbstractFengyun 2 (FY‐2) satellite is the first generation of geostationary meteorological satellite of China. The solar X‐ray detector aboard on FY‐2C/D has capability to observe the solar X‐ray flux of >5.18 keV and >3.27 keV, respectively. For the purpose of examining the effectiveness of FY‐2C/D X‐ray data, we compare them with the similar data of GOES, and find that these two categories of data are well consistent in temporal characters and X‐ray flux during solar flare events. By the cross comparison of the X‐ray peak flux for 85 solar flare events from November 2004 to June 2010, it is found that the linear correlative coefficient is 0.795 between FY‐2C and GOES data in 1~8 Å, and the corresponding coefficients between FY‐2D and GOES data in 0.5~3 Å and 1~8 Å are 0.921 and 0.989, respectively. The results indicate that the FY‐2C/D solar X‐ray data are quite reliable for monitoring, warning and researching of the solar X‐ray flare events.