Fig. 2: Climatic impacts on regional precipitation regimes through dynamic shifts and thermodynamic scaling.
From: Anthropogenic transition in flood regimes: insights from a millennium of the Yangtze River records

a Histogram of precipitation regimes in China, ranging from extreme dry (PI) to extreme wet (PVI), during the Medieval Warm Period (MWP), the Little Ice Age (LIA), and the Current Warm Period (CWP). Wet regimes were more prevalent during the LIA, while dry regimes dominated in the CWP, indicating a dynamic shift in precipitation patterns. b Box-whisker plots of precipitation intensity across individual regimes in the Yangtze River Basin. Boxes represent the interquartile range, diamond markers indicate means, whiskers show variability, and individual data points are plotted. The MWP is excluded due to missing data prior to 1470. The difference between the regression lines for the LIA (blue) and the Post-LIA/CWP (red) indicates a thermodynamically driven increase in precipitation intensity, as confirmed by a two-tailed T test (p = 0.0236).