DOI: 10.1175/JCLI-D-16-0258.1
Scopus记录号: 2-s2.0-85017512120
论文题名: Change in destructiveness of landfalling tropical cyclones over China in recent decades
作者: Li R.C.Y. ; Zhou W. ; Shun C.M. ; Lee T.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 9 起始页码: 3367
结束页码: 3379
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Hurricanes
; Oceanography
; Storms
; Tropics
; Atmosphere-ocean interactions
; Cyclonic circulation
; Diagnostic analysis
; Environmental parameter
; Landfalling tropical cyclones
; Maximum intensities
; Tropical cyclone
; Vertical wind shear
; Time series analysis
英文摘要: This study investigates changes in the destructiveness of landfalling tropical cyclones (TCs) over China during 1975-2014. Using four different TC datasets, it is found that TCs making landfall over east China (TCEC) have tended to be more destructive in recent decades, with a significant increase in the power dissipation index (PDI) after landfall. Both time series analysis and diagnostic analysis reveal that such an increase in the PDI of TCEC is associated with concomitant enhancement in landfall frequency as well as landfall intensity over east China. In contrast, changes in the PDI of TCs making landfall over south China (TCSC) are less apparent. Examination of different TC-related parameters shows no obvious changes in terms of landfall frequency, duration, and maximum intensity of TCSC. Diagnostic analysis further suggests that the reduction in TC occurrence over south China offsets considerably the positive effects of the intensity and the nonlinear term. Further examination of the environmental parameters reveals significant changes in the large-scale steering flow in recent decades, which is characterized by a prominent cyclonic circulation centered over southeast China. The southeasterly flows on the eastern flank of the cyclonic circulation tend to favor subsequent landfall of TCs over east China, resulting in an increase in landfall frequency, which contributes in part to the enhanced PDI of TCs over this region. Meanwhile, the slowing down of the mean translation speed of TCEC and the weakening of vertical wind shear coupled with warmer SSTs in the WNP tend to favor the intensification of TCEC, leading to an increase in intensity and hence the PDI of TCs over east China. © 2017 American Meteorological Society. 资助项目: 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/49677
Appears in Collections: 气候变化事实与影响
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作者单位: Guy Carpenter Asia-Pacific Climate Impact Center, School of Energy and Environment, City University of Hong Kong, Hong Kong; Hong Kong Observatory, Hong Kong
Recommended Citation:
Li R.C.Y.,Zhou W.,Shun C.M.,et al. Change in destructiveness of landfalling tropical cyclones over China in recent decades[J]. Journal of Climate,2017-01-01,30(9)