Changing characteristics and spatial differentiation of spring precipitation in Southwest China during 1961–2012*
Liu Hong-Lana)†, Zhang Qiangb), Zhang Jun-Guoc), Hu Wen-Chaod), Guo Jun-Qine), Wang Shengf)
       
500-hPa geopotential height anomaly distribution of spring in the rainy year (a) and droughty year (b) in Southwest China