Multidecadal Variability of Tropical Cyclone Rapid Intensification in the Western North Pacific

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Multidecadal Variability of Tropical Cyclone Rapid Intensification in the Western North Pacific
	Wang, Xidong; Wang, Chunzai; Zhang, Liping; Wang, Xin
刊名	JOURNAL OF CLIMATE
	2015
卷号	28 期号:9 页码:3806-3820
通讯作者	xidong_wang@yahoo.com
中文摘要	This study investigates the variation of tropical cyclone (TC) rapid intensification (RI) in the western North Pacific (WNP) and its relationship with large-scale climate variability. RI events have exhibited strikingly multidecadal variability. During the warm (cold) phase of the Pacific decadal oscillation (PDO), the annual RI number is generally lower (higher) and the average location of RI occurrence tends to shift southeastward (northwestward). The multidecadal variations of RI are associated with the variations of large-scale ocean and atmosphere variables such as sea surface temperature (SST), tropical cyclone heat potential (TCHP), relative humidity (RHUM), and vertical wind shear (VWS). It is shown that their variations on multidecadal time scales depend on the evolution of thePDOphase. The easterly trade wind is strengthened during the cold PDO phase at low levels, which tends to make equatorial warm water spread northward into the main RI region rsulting from meridional ocean advection associated with Ekman transport. Simultaneously, an anticyclonic wind anomaly is formed in the subtropical gyre of the WNP. This therefore may deepen the depth of the 26 degrees C isotherm and directly increase TCHP over the main RI region. These thermodynamic effects associated with the cold PDO phase greatly support RI occurrence. The reverse is true during the warm PDO phase. The results also indicate that the VWS variability in the low wind shear zone along the monsoon trough may not be critical for the multidecadal modulation of RI events.
学科主题	Meteorology & Atmospheric Sciences
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/14980]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Wang, Xidong,Wang, Chunzai,Zhang, Liping,et al. Multidecadal Variability of Tropical Cyclone Rapid Intensification in the Western North Pacific[J]. JOURNAL OF CLIMATE,2015,28(9):3806-3820.
APA	Wang, Xidong,Wang, Chunzai,Zhang, Liping,&Wang, Xin.(2015).Multidecadal Variability of Tropical Cyclone Rapid Intensification in the Western North Pacific.JOURNAL OF CLIMATE,28(9),3806-3820.
MLA	Wang, Xidong,et al."Multidecadal Variability of Tropical Cyclone Rapid Intensification in the Western North Pacific".JOURNAL OF CLIMATE 28.9(2015):3806-3820.