Fig. 2: Spatial distributions and trends of short‐time events (STEs) proportion.
From: Accelerated shifts from heatwaves to heavy rainfall in a changing climate
a Proportion of STEs at each station during the study period from 1970 to 2019. b Density plot of station distributions by the proportion of STEs, medium‐time events (MTEs), and long‐time events (LTEs). The density is estimated using kernel density estimation with a Gaussian kernel function and a bandwidth of 1000 for each event type. The colored dashed lines corresponding to each event type indicate the median proportion of each type. The asterisk (*) denotes significant differences between the STEs and MTEs/LTEs, calculated using Student’s t‐test at the 95% confidence level. c Trend of STEs proportion per decade for each station during the study period from 1970 to 2019. Large dots indicate trends that are significant at the 95% confidence level, while small dots represent trends that are not significant. The inset provides a statistical summary of station proportions based on trend significance, where dark red represents a significant increase, while dark blue indicates a significant decrease. d Trend of average STEs proportion across all stations. The dotted line represents annual values, and the solid line represents the linear trend. e Correlation between the trend of STEs proportion and the average time interval. Blue dots represent stations where the two variables exhibit opposite trends. Correlation analysis is based on the Pearson correlation test. The abbreviations of sub-regions can be found in the section “Methods”.
