亚洲热带近海海温与云南夏季降水的关系  

Relationship between SST over Offshore Waters of South and Southeast Asia and Summer Precipitation in Yunnan

作　　者：张云瑾[1] 张天圣[1] 

机构地区：[1]云南大学大气科学系,昆明650091

出　　处：《气象科技》2008年第1期31-34,共4页Meteorological Science and Technology

基　　金：中国气象局气候变化专项(CCSF2007-46)资助

摘　　要：分析了1961-1999年亚洲热带近海海温与云南降水的关系。通过研究云南夏季降水对近海海温异常的响应,发现云南初夏的降水与亚洲热带近海海温有明显的负相关关系,这种降水减少海温正距平的情况在北印度洋西部和阿拉伯海表现比孟加拉湾和南海更显著,但是在盛夏相关关系不显著。同时发现云南西南部的夏季降水与前期孟加拉湾海温有显著的正相关,而与其它海域的海温相关不显著。滇东南的夏季降水只与前期南海的海温有显著的正相关。An analysis is made of the relationship between SSTA （Sea Surface Temperature Anomaly） over the offshore waters of the southern Asia and the precipitation in Yunnan from 1961 to 1999. It is discovered that the precipitation in early summer in Yunnan has a distinct negative relationship with SST over the offshore waters of the southern Asia, and the negative relationship is more obvious in the western North Indian Ocean and the Arabian sea than in the Bay of Bengal and South China Sea, but not obvious in middle summer. The results also show that the precipitation in summer in the southwestern Yunnan is positively related with the SST of the previous period over the Bay of Bengal, but the relationship is not obvious in other sea areas. The precipitation in summer in the southeastern Yunnan is positively related only with the SST of the previous period obviously over the South China Sea.

关 键 词：旱涝 海温距平 相关系数 

分 类 号：P434[天文地球—大气科学及气象学] P457.6