2006年台风“碧利斯”与“格美”的降水差异性比较  

Rainfall Contrast Between Typhoon Bilis and Kaemi 2006

作　　者：罗碧瑜 张晨辉 李源峰 李仕安 

机构地区：[1]梅州市气象局,广东梅州514021 [2]梅县气象局,广东梅县514000

出　　处：《海洋科学进展》2009年第1期74-80,共7页Advances in Marine Science

基　　金：梅州市科技局科技主项项目--登陆影响梅州热带气旋的特点分析(2006B37)

摘　　要：对2006年7月登陆,西移影响粤东的路径相似、降水过程强度和范围不同的2次台风过程,从环流形势,台风环流本身、结构以及降水性质等方面进行了对比分析。结果表明,"碧利斯"的降水是一典型的和西南季风相结合的降水,而"格美"的降水仅仅是台风本身环流的降水。同时发现两者在登陆2d内500hPa平均高度场、水汽通量垂直剖面图,水汽输送时间序列图上均有显著差异。指出水汽输送的强弱,决定了登陆台风的维持时间和降雨强度。The background circulation situation, the circulation and structure in the typhoon, and the rainfall features respectively of the 2 typhoons are compared and analyzed. The 2 typhoons have similar tracks, displacing both westward and landing both in the east of Guangdong in July 2006, but the rainfall intensity and the impacted area of the one typhoon process are different Srom those of the another. As it is shown in the results, the rainfall is caused during the Typhoon Bills process by both the typhoon circulation and the southwest monsoon circulation, while the rainfall of Typhoon Kaemi is mainly caused by the typhoon cir culationitself. It is also found that the patterns of the 500 hPa height field, the vertical profiles of vapour flux, and the vapour transport time-series within the 2 days before the typhoon landing time obviously differ from each other. It is evidenced that the time for the typhoon persistence on land deponds upon the moisture transport strength.

关 键 词：天气学 台风 对比分析 西南季风 水汽输送 

分 类 号：P732[天文地球—海洋科学]