陕西省干旱及其环流特征  

Drought and its Circulation Features in Shaanxi Province

作　　者：李平[1] 候明全[1] 董长林 

机构地区：[1]陕西省气象台

出　　处：《气象》1997年第4期39-42,共4页Meteorological Monthly

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。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.

关 键 词：干旱 环流特征 大气环流 

分 类 号：P426.616[天文地球—大气科学及气象学] P434