Fig. 6: Total annual drought frequency under different scenarios and time periods.

TADF (PET calculated from PM-CO2) for the base period (1980–2014) and three future periods (2015–2040, 2041–2070, and 2071–2100) under a SSP1-2.6 and b SSP5-8.5. Significance levels are indicated by **** for p ≤ 0.0001, *** for p ≤ 0.001, ** for p ≤ 0.01, and * for p ≤ 0.05. The lower green sign indicates the p-value between two GCMs, and the upper **** sign represents that the p-value between all two GCMs, except the lower green one, is ≤ 0.0001.