【摘要】 从大气环流特征、干旱指数Ｓ及信噪比等三个方面对陕西省近几年干旱月份进行了分析。发现陕西干旱的大气环流可分为东亚大槽稳定型、西太平洋副热带高压控制型、青藏高压持续影响型。东亚大槽稳定型的干旱最为严重。更多还原

【Abstract】 Shaanxi province drought months in recent years were analysed by examining the atmosphere general circulation features,drought index S and the signal to noise ratio.The results show that the general circulation of Shaanxi drought can be divided into three patterns:the stabilization of East Asian long wave trough,the dominance of west pacific subtropical high and the persistence of Tibetan high.The drought associated with the East Asian long wave trough is the most serious.更多还原