DOI: 10.1175/JCLI-D-17-0298.1
Scopus记录号: 2-s2.0-85041947269
论文题名: Impact of two types of El Niño on tropical cyclones over the Western North Pacific: Sensitivity to location and intensity of Pacific warming
作者: Wu L. ; Zhang H. ; Chen J.-M. ; Feng T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 5 起始页码: 1725
结束页码: 1742
语种: 英语
英文关键词: Atmosphere-ocean interaction
; El Nino
; Interannual variability
; North Pacific Ocean
; Tropical cyclones
Scopus关键词: Atmospheric thermodynamics
; Climatology
; Digital storage
; Hurricanes
; Location
; Mechanical waves
; Meteorology
; Nickel
; Oceanography
; Storms
; Tropics
; Atmosphere-ocean interactions
; EL Nino
; Interannual variability
; North Pacific Ocean
; Tropical cyclone
; Nickel compounds
; air-sea interaction
; annual variation
; El Nino
; monsoon
; Rossby wave
; tropical cyclone
; Walker circulation
; warming
; westerly
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: The present study investigates the impact of various central Pacific (CP) and eastern Pacific (EP) warming on tropical cyclones (TCs) over the western North Pacific (WNP) for the period 1948-2015 based on observational and reanalysis data. Four distinctly different forms of tropical Pacific warming are identified to examine different impacts of locations and intensity of tropical Pacific warming on the WNP TCs. It is shown that WNP TC activity related to ENSO shows stronger sensitivity to the intensity of CP SST warming. The locations of TC genesis in an extreme EP El Niño featuring concurrent strong CP and EP warming (CEPW) display a notable southeastward shift that is generally similar to the CP El Niño featuring CP warming alone (CPW). These influences are clearly different from the effects of moderate EP El Niño associated with EP warming alone (EPW). The above influences of Pacific warming on TCs possibly occur via atmospheric circulation variability. Anomalous convection associated with CP SST warming drives anomalous low-level westerlies away from the equator as a result of a Gill-type Rossby wave response, leading to an enhanced broad-zone, eastward-extending monsoon trough (MT). An anomalous Walker circulation in response to EP SST warming drives an increase in anomalous equatorial westerlies over the WNP, leading to a narrow-zone, slightly equatorward shift of the eastward-extending MT. These changes in the MT coincide with a shift in large-scale environments and synoptic-scale perturbations, which favor TC genesis and development. In addition, during weaker EP SST warming (WEPW) with similar intensity to CPW, local SST forcing exhibits primary control on WNP TCs and atmospheric circulation. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111637
Appears in Collections: 气候减缓与适应
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作者单位: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Maritime Information and Technology, National Kaohsiung Marine University, Kaohsiung, Taiwan; Institute for Climate and Global Change Research, Jiangsu Collaborative Innovation Center for Climate Change, School of Atmospheric Sciences, Nanjing University, Nanjing, China
Recommended Citation:
Wu L.,Zhang H.,Chen J.-M.,et al. Impact of two types of El Niño on tropical cyclones over the Western North Pacific: Sensitivity to location and intensity of Pacific warming[J]. Journal of Climate,2018-01-01,31(5)