| Relationships between the North Pacific Oscillation and the typhoon/hurricane frequencies |
| |
| 作者单位： | WANG HuiJun（Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China） ;
SUN JianQi（Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China） ;
FAN Ke（Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China） ; |
| |
| 摘 要： | Relationships between the North Pacific Oscillation (NPO) and the typhoon as well as hurricane fre-quencies are documented. The correlation between NPO index in June-July-August-September and the annual typhoon number in the western North Pacific is 0.37 for the period of 1949―1998. The NPO is correlated with the annual hurricane number in the tropical Atlantic at -0.28 for the same period. The variability of NPO is found to be concurrent with the changes of the magnitude of vertical zonal wind shear, sea-level pressure patterns, as well as the sea surface temperature, which are physically asso- ciated with the typhoons and hurricanes genesis. The NPO associated atmospheric circulation vari- ability is analyzed to explain how NPO is linked with variability of the tropical atmospheric circulation in the western Pacific and the tropical Atlantic, via the atmospheric teleconnection.
|
| 收稿时间： | 15 March 2007 |
| 修稿时间： | 10 May 2007 |
Relationships between the North Pacific Oscillation and the typhoon/hurricane frequencies |
| |
| Authors: | Wang HuiJun Sun JianQi Fan Ke |
| |
| Institution: | Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing 100029, China |
| |
| Abstract: | Relationships between the North Pacific Oscillation (NPO) and the typhoon as well as hurricane frequencies are documented.
The correlation between NPO index in June–July–August–September and the annual typhoon number in the western North Pacific
is 0.37 for the period of 1949–1998. The NPO is correlated with the annual hurricane number in the tropical Atlantic at −0.28
for the same period. The variability of NPO is found to be concurrent with the changes of the magnitude of vertical zonal
wind shear, sea-level pressure patterns, as well as the sea surface temperature, which are physically associated with the
typhoons and hurricanes genesis. The NPO associated atmospheric circulation variability is analyzed to explain how NPO is
linked with variability of the tropical atmospheric circulation in the western Pacific and the tropical Atlantic, via the
atmospheric teleconnection.
Supported jointly by the National Natural Science Foundation of China (Grant Nos. 40631005 and 40620130113), and part of “A
study on the typhoon monitoring and prediction system development (II)” program by the National Institute of Meteorological
Research in the Korean Meteorological Administration |
| |
| Keywords: | Western North Pacific Typhoon tropical Atlantic hurricane North Pacific oscillation typhoon/hurricane frequency |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ |
