Fig.S1 The temporal changes of drought intensity for different drought categories averaged over Southeast Asian land monsoon region (10-30°N, 90-120°E) based on (a) SPEI, and (b) sc-PDSI. The yellow, orange, brown and red lines represent abnormally dry (SPEI≤-0.5, sc-PDSI≤-1.0), moderate drought (SPEI≤-1.0, sc-PDSI≤-2.0), severe drought (SPEI≤-1.5, sc-PDSI≤-3.0), and extreme drought (SPEI≤-2.0, sc-PDSI≤-4.0), respectively.