Fig. 2From: Estimate of economic impact of atmospheric radiation storm associated with solar energetic particle events on aircraft operationsa Estimated EDR in \(\upmu {\text{Sv}}\,{\text{h}}^{-1}\) at FL 400 (12.19 km) at 0655 UT on 20 January 2005. b Estimated EDR at an altitude of FL 400 (12.19 km) at 0655 UT on 20 January 2005, but with flipping the northern and southern hemispheresBack to article page