摘要
利用奇异值分解法（ＳＶＤ） 分析了云南２１ 个站各月降水距平与北太平洋海温的相关关系，得到了奇异向量，对贡献最大的前２ 个奇异向量进行分析，结果表明∶①平均意义上，秋冬季海温与云南各月降水存在显著的相关关系；②秋冬季热带东太平洋海温对翌年春末盛夏云南中部地区的降水有显著的影响；③秋冬季的热带中东太平洋海温与前一年春末和盛夏降水也存在明显的相关关系．
The relationship between the monthly precipitation anomaly field in Yunnan and the SSTA field over Northern pacific by using singular valuc decomposition method,and obtained singular vecter space distrbution patterns of SSTA with rainfall field and studied head two distribution patterns.The results show that (1) In average, there is close correlation between the SSTA fields in autnmn and winter and monthly rainfall in Yunnan.(2) The SSTA field in the tropics eastern pacfic during autumn winter has strong influence on the rainfall in end of spring and midsummer in the coming year for Yunnan mean ared.(3) There is close relationship between SSTA field in the middle and eastern tropics pacific from autumn to winter and the rainfall for Yunnan in end spring and midsummer in preceding year.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
1999年第5期353-356,359,共5页
Journal of Yunnan University(Natural Sciences Edition)
基金
云南省自然科学基金
云南省教委科研基金
关键词
奇异值分解
太平洋
海温
云南
降水
decomposition of singular value
monthly precipitation anomaly
sea surface temperature in pacific
