Vapor source Air moisture Rain Monsoon δD=6.29δ18O + 32.80; R2=0.88, n=110 δD=7.78δ18O + 6.89; R2=0.99, n=42 Western Disturbance (WD) δD=5.38δ18O + 30.38; R2=0.73, n=102 δD=6.92δ18O + 1.44; R2=0.98, n=12 Local δD=4.83δ18O + 28.17; R2=0.80, n=105 δD=5.00δ18O + 12.14; R2=0.90, n=16

Table 1: Isotopic characterization of air moisture and rain.