Fig. 3: Changes in the severity and area of different types of snow droughts.
From: Snow droughts amplify compound climate extremes over the Tibetan Plateau
a Interannual variations in the severity of snow droughts (i.e., absolute value of SWEI) from 1979 to 2022. b Interannual variations in the proportion of the area affected by snow droughts. A vertical dashed line marks 1991, the key breakpoint determined through linear regression. c Proportion of the area affected by different types of snow droughts during the entire study period, before 1991, and after 1991.
