对“喜马拉雅山积雪与印度季风降水呈明显反相关关系”的商榷  

COMMENTS ON“AN APPARENT RELATIONSHIP BETWEEN HIMALAYAN SNOW COVER AND SUMMER MONSOON RAINFALL OVER INDIA”

作　　者：李培基[1] 

机构地区：[1]中国科学院兰州冰川冻土研究所

出　　处：《气象学报》1996年第3期379-384,共6页Acta Meteorologica Sinica

摘　　要：亚洲高原积雪百余年来一直为气候学家所瞩目。过去根据有限的积雪资料分析认为，喜马拉雅山积雪与印度夏季降水呈明显反相关关系。本文根据１９５７—１９９２年６０个基本气象台站逐日雪深、密度记录，１９７８—１９８７年ＳＭＭＲ微波周积雪深度资料，以及１９６６—１９８９年ＮＯＡＡ周积雪面积资料所反映的高原积雪空间分布，季节变化，与年际波动特征，和高原积雪异常、印度季风降水异常、ＥＮＳＯ三者发生时间的对比分析以及相关计算，提出对前人研究结论的商榷。The snow cover in central high Asia has been the focus of climatologists interestsfor many decades. Earlier studies indicate that Himalayan snow cover has a significanteffect on Indian monsoon rainfall, but they have relied on very limited snow cover data.In this paper, three complete high Asian snow cover data sets are used. They consist of SMMR weekly snow depth charts covering the period 1978-1987, operationalNOAA weekly snow cover extent during the period between 1966-1989, and dailysnow depth records at 60 primary weather stations over the 36-year period 1957-1992.Unpervasive feature, dearth of snow mass in the interior, and limited portion affectedby substantial interannual variability reveal that the high Asian snow cover itself couldnot greatly influence the indian monsoon rainfall. A simple approach of lead/lag relationbetween high Asian snow cover, Indian monsoon rainfall, and ENSO shows that snowcover over the high Asia is not a key variable influencing the indian monsoon. Furthercorrelation calculation indicates that only a week signal was found.

关 键 词：季风 降水 积雪 喜马拉雅山 埃尔尼诺 

分 类 号：P426.6[天文地球—大气科学及气象学] P426.635