globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-015-2563-8
Scopus记录号: 2-s2.0-84955749648
论文题名:
PDO modulation of ENSO effect on tropical cyclone rapid intensification in the western North Pacific
作者: Wang X.; Liu H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期:2017-01-02
起始页码: 15
结束页码: 28
语种: 英语
英文关键词: El Niño/Southern Oscillation ; Pacific Decadal Oscillation ; Rapid intensification ; Tropical cyclone
英文摘要: This study investigates how the Pacific Decadal Oscillation (PDO) modulates the effect of El Niño/Southern Oscillation (ENSO) on tropical cyclone rapid intensification (RI) in the western North Pacific. The analysis shows that the interannual relationship between ENSO and annual RI number in warm PDO phases is strong and statistically significant. In cold PDO phases, however, there is no significant correlation between ENSO and RI on the interannual timescale. The enhancement of the interannual ENSO–RI relationship in warm PDO phases is mainly attributable to the change of the environmental vertical wind shear. The PDO in warm (cold) phases can strengthen (weaken) an El Niño event to increase (reduce) the effects of the warm pool of water over the equatorial Pacific in typhoon season by local diabatic heating. El Niño events are accompanied by the stronger Walker circulation in the equatorial Pacific in the warm PDO phase than in the cold PDO phase. In contrast, the Walker circulation pattern and amplitude associated with La Niña events is less affected by the alternate PDO phase. This tends to make the atmospheric response to ENSO stronger (weaker) in warm (cold) PDO phase, and so is the atmospheric teleconnection of ENSO. Our results indicate that the stratification of ENSO-based statistical RI forecast by the PDO can greatly improve the accuracy of statistical RI predictions. © 2015, Springer-Verlag Berlin Heidelberg.
资助项目: National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53884
Appears in Collections:过去全球变化的重建

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作者单位: Key Laboratory of Marine Environmental Information Technology, SOA, National Marine Data and Information Service, 93 Liuwei Road, Hedong District, Tianjin, China; Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, United States; NOAA/Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States

Recommended Citation:
Wang X.,Liu H.. PDO modulation of ENSO effect on tropical cyclone rapid intensification in the western North Pacific[J]. Climate Dynamics,2016-01-01,46(2017-01-02)
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