Fig. 2: Changes in the global multi-year average of CDHWs-scPDSI (red) and CDHWs-SPEI (blue) for 44 subregions (in months).
From: Global disparities in rural and urban population exposure to compound drought and heatwave events

The radar maps represent the mean CDHWs for each region over the 121-year period (1901–2021). These averages were calculated by aggregating annual CDHWs occurrences across grid cells within each subregion and taking multi-year means.