Seasonal modulations of different impacts of two types of ENSO events on tropical cyclone activity in the western North Pacific

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Seasonal modulations of different impacts of two types of ENSO events on tropical cyclone activity in the western North Pacific
	Wang, Chunzai 1; Li, Chunxiang 2,3; Mu, Mu 4; Duan, Wansuo 2
刊名	CLIMATE DYNAMICS
	2013-06-01
卷号	40 期号:11-12 页码:2887-2902
ISSN号	0930-7575
通讯作者	Wang, CZ
中文摘要	The paper examines different impacts of eastern Pacific warm/cold (EPW/EPC) and central Pacific warm/cold (CPW/CPC) events on tropical cyclones (TCs) in the western North Pacific (WNP) by considering the early season of April-June (AMJ), the peak season of July-September (JAS) and the late season of October-December (OND). During AMJ, EPW (EPC) is associated with a significant increase of the TC genesis number in the southeastern (southwestern) sub-region of the WNP, but no class of El Nio-Southern Oscillation (ENSO) events shows a significant change in the TC lifetime and intensity. During JAS, EPW corresponds to an increase (decrease) of the TC genesis number in the southeastern (northwestern) sub-region, but CPW shows no significant change. EPC increases the TC genesis in the northwestern and northeastern sub-regions and decreases the genesis in the southwestern sub-region, whereas CPC suppresses the genesis in the southeastern sub-region. Both the lifetime and intensity of TCs are increased in EPW, but only a shortened lifetime is seen for CPC. During OND, EPW reduces the TC genesis in the southwestern and northwestern sub-regions, whereas CPW enhances the genesis in the southeastern sub-region. Over the South China Sea, CPW and CPC show a significant decrease and increase of the TC genesis, respectively. The TC lifetime is significantly longer in both EPW and CPW and shorter in EPC, and TCs tend to be more (less) intense in EPW (CPC). All of these variations are consistent with the development of ENSO-related SST anomalies during different seasons and are supported by distributions of the genesis potential index-a combination of large-scale oceanic and atmospheric factors that affect TC activity. TCs in the WNP mainly take the straight westward, northwestward and recurving tracks. During AMJ of EPW years, the TC steering flow patterns favor the recurving track and suppress the straight westward and northwestward tracks. During JAS, EPW is associated with the steering flows that are unfavorable for TCs to move northwestward or westward, whereas CPW favors the northwestward track and suppresses the straight westward track. The steering flow patterns during OND are similar to those during JAS, except that EPC may increase the possibility of the northwestward track.
英文摘要	The paper examines different impacts of eastern Pacific warm/cold (EPW/EPC) and central Pacific warm/cold (CPW/CPC) events on tropical cyclones (TCs) in the western North Pacific (WNP) by considering the early season of April-June (AMJ), the peak season of July-September (JAS) and the late season of October-December (OND). During AMJ, EPW (EPC) is associated with a significant increase of the TC genesis number in the southeastern (southwestern) sub-region of the WNP, but no class of El Nio-Southern Oscillation (ENSO) events shows a significant change in the TC lifetime and intensity. During JAS, EPW corresponds to an increase (decrease) of the TC genesis number in the southeastern (northwestern) sub-region, but CPW shows no significant change. EPC increases the TC genesis in the northwestern and northeastern sub-regions and decreases the genesis in the southwestern sub-region, whereas CPC suppresses the genesis in the southeastern sub-region. Both the lifetime and intensity of TCs are increased in EPW, but only a shortened lifetime is seen for CPC. During OND, EPW reduces the TC genesis in the southwestern and northwestern sub-regions, whereas CPW enhances the genesis in the southeastern sub-region. Over the South China Sea, CPW and CPC show a significant decrease and increase of the TC genesis, respectively. The TC lifetime is significantly longer in both EPW and CPW and shorter in EPC, and TCs tend to be more (less) intense in EPW (CPC). All of these variations are consistent with the development of ENSO-related SST anomalies during different seasons and are supported by distributions of the genesis potential index-a combination of large-scale oceanic and atmospheric factors that affect TC activity. TCs in the WNP mainly take the straight westward, northwestward and recurving tracks. During AMJ of EPW years, the TC steering flow patterns favor the recurving track and suppress the straight westward and northwestward tracks. During JAS, EPW is associated with the steering flows that are unfavorable for TCs to move northwestward or westward, whereas CPW favors the northwestward track and suppresses the straight westward track. The steering flow patterns during OND are similar to those during JAS, except that EPC may increase the possibility of the northwestward track.
学科主题	Meteorology & Atmospheric Sciences
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Meteorology & Atmospheric Sciences
研究领域[WOS]	Meteorology & Atmospheric Sciences
关键词[WOS]	SOUTH CHINA SEA ; EL-NINO MODOKI ; INTERDECADAL VARIABILITY ; CLIMATE-CHANGE ; INTENSITY ; TRACKS ; TEMPERATURE ; FREQUENCY ; SUMMER
收录类别	SCI
原文出处	10.1007/s00382-012-1434-9
语种	英语
WOS记录号	WOS:000319360800019
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16433]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.NOAA, Phys Oceanog Div, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA 2.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Wave, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chunzai,Li, Chunxiang,Mu, Mu,et al. Seasonal modulations of different impacts of two types of ENSO events on tropical cyclone activity in the western North Pacific[J]. CLIMATE DYNAMICS,2013,40(11-12):2887-2902.
APA	Wang, Chunzai,Li, Chunxiang,Mu, Mu,&Duan, Wansuo.(2013).Seasonal modulations of different impacts of two types of ENSO events on tropical cyclone activity in the western North Pacific.CLIMATE DYNAMICS,40(11-12),2887-2902.
MLA	Wang, Chunzai,et al."Seasonal modulations of different impacts of two types of ENSO events on tropical cyclone activity in the western North Pacific".CLIMATE DYNAMICS 40.11-12(2013):2887-2902.