1500 1500 2100 2400 2700 3000 3300 GPS01 GPS02 GPS03 GPS04 GPS05 JZ A B III II I 15" 15" 30" 30" 45" 45" 00" 00" 15" 15" 30" 30" 00" 00" 15" 15" 30" 30" 45" 45" 00" 00" 15" 15" 30" 30" 45" 45" 103˚26' E 103˚26' E 31˚34' N 31˚34' N 31˚35' N 31˚35' N 0 m 500 m N Monitoring station Base station Rain gauge III II I 1500 2000 2500 3000 3500 1500 2000 2500 3000 3500 Height (m) 0 1 2 3 4 Distance of A-B profile (km)