TYPHOON ACTIVITY IN NORTHWEST PACIFIC IN RELATION WITH EL NINO AND LA NINA EVENTS |
| |
| Authors: | HE Ming SONG Wen-ling and CHEN Xing-fang |
| |
| Institution: | National Climate Center, Beijing 100081 China;National Climate Center, Beijing 100081 China;National Climate Center, Beijing 100081 China |
| |
| Abstract: | Statistic and typical-year composition methods are used to study the northwest Pacific typhoon activities in relation with the EI Niño and La Niña events. The result indicates that the typhoon tends to be inactive in the EI Niño years and active in the La Niña years and it is also dependent on the onset and ending time and intensity of the events and areas of genesis of typhoons. With statistic features of the frequency of typhoon activity in the EI Niño and La Niña years and the time-lag correlation between the frequency and sea surface temperature(SST), useful information is provided for the prediction of typhoon occurrence. In addition, the singular values disassemble(SVD)method is applied to study the correlation between the geopotential field and SST field. The result shows that the air-sea coupling in the EI Niño years is unfavorable for the typhoon to develop. Which take place with a smaller number. Opposite situations are found with the La Niña years. |
| |
| Keywords: | typhoon EI Niñ o and La Niñ a events singular values disassemble |
|
| 点击此处可从《热带气象学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《热带气象学报(英文版)》下载免费的PDF全文 |
