摘要
本文把云南省25个站1956－1990年期间的5月份雨量作自然正交展开，从而得到云南5月降水的自然分布型。将各分布型与其前期的1－3月100、500hPa高度场作相关分析，发现云南初夏5月降水一致性分布与前期100、500hPa相关区分布趋势一致，特别是与2月低纬定常行星波列的传播路径有关；降水分布的第二型与高度场的相关分布主要在乌拉尔山、菲律宾及其附近。
In this paper, the rainfalls of 25 station in May of Yunnan during 1956 to 1990, wereanalysed by using EOF and the natural rainfall region was obtained．The correlations be-tween the first three rainfall fields and 100hpa, 500hpa geopotential height fields from Jan-uary to March were studied. The results have shown that the first distribution type of theearly summer precipitation tends to coincide with correlation distribution of 100hpa, 500hpageopotential height fields and was relevant to spread path of the planetary wave in low lati-tude in February; the second field and correlation region of geopotential height field wereconcentrated on Ural and around the Philippines.
出处
《气象科学》
CSCD
北大核心
1996年第4期355-361,共7页
Journal of the Meteorological Sciences
