DOI: 10.1002/joc.5437
论文题名: Causes of the active typhoon season in 2016 following a strong El Niño with a comparison to 1998
作者: Huangfu J. ; Huang R. ; Chen W. ; Feng T.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38 起始页码: e1107
结束页码: e1118
语种: 英语
英文关键词: El Niño event
; monsoon trough
; typhoon genesis
; western North Pacific
Scopus关键词: Atmospheric thermodynamics
; Budget control
; Kinetic energy
; Kinetics
; Nickel
; Nickel compounds
; Oceanography
; Surface waters
; Troposphere
; Background conditions
; Cyclonic circulation
; Eddy kinetic energy
; Monsoon trough
; Sea surface temperature (SST)
; Tropical depressions
; Vertical wind shear
; Western North Pacific
; Hurricanes
; El Nino
; monsoon
; sea surface temperature
; troposphere
; typhoon
; vorticity
; water vapor
; wind shear
; zonal wind
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: This article analysed two typhoon seasons (1998 and 2016) over the western North Pacific (WNP) with similar preceding background conditions of the tropical Pacific sea surface temperature (SST). Following the strong El Niño event in the preceding winter, the typhoon season was inactive in 1998 while active in 2016. Compared with 1998, the monsoon trough (MT) in 2016 shifted more eastwards, leading to an increase of the mid-level water vapour, lower-tropospheric relative vorticity and upper-tropospheric divergence, and a decrease of the vertical wind shear. Additionally, the eastwards extension of the MT in 2016 induced more active tropical depression (TD)-type waves than those in 1998. The analysis of the energy budget suggested that the eastwards shift of the MT during the 2016 typhoon season provided increased eddy kinetic energy for typhoon genesis, due to the joint contributions of the meridional shear of the mean zonal winds and the zonal wind convergence over the WNP. Moreover, the WNP entered a La Niña-like SST pattern after July 2016. The relatively slower developing process of this pattern sustained the warmer SST anomalies and the anomalous cyclonic circulation, which the eastwards extension of the MT can be attributed. Hence, compared to 1998, the active typhoon season in 2016 is attributed to the eastwards extension of the MT, more active TD-type wave activities, and slow developing process of a La Niña-like SST pattern in 2016 typhoon season. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116960
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; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China; CMA–NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, China
Recommended Citation:
Huangfu J.,Huang R.,Chen W.,et al. Causes of the active typhoon season in 2016 following a strong El Niño with a comparison to 1998[J]. International Journal of Climatology,2018-01-01,38