DOI: 10.1007/s00382-017-3989-y
Scopus记录号: 2-s2.0-85032807887
论文题名: Influences of sea surface temperature in the tropical Pacific and Indian Oceans on tropical cyclone genesis over the western North Pacific in May
作者: Huangfu J. ; Chen W. ; Ma T. ; Huang R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-05-06 起始页码: 1915
结束页码: 1926
语种: 英语
英文关键词: Tropical cyclone genesis
; Tropical Indian Ocean
; Tropical Pacific Ocean
Scopus关键词: atmospheric circulation
; eddy
; energy budget
; environmental factor
; kinetic energy
; sea surface temperature
; temperature anomaly
; temperature effect
; tropical cyclone
; zonal wind
; Indian Ocean
; Indian Ocean (Tropical)
; Pacific Ocean
; Pacific Ocean (North)
; Pacific Ocean (Tropical)
英文摘要: This study investigated the effects of sea surface temperature (SST) in different tropical regions on tropical cyclone (TC) genesis over the western North Pacific (WNP) in May. The results revealed that positive SST anomalies over the tropical Pacific (Indian) Ocean in March may lead to increased (decreased) numbers of TCs over the WNP in May by affecting the atmospheric circulation anomalies over the WNP. Warmer SSTs over the tropical Pacific Ocean (TPO) may lead to stronger low-level southwesterly winds and enhanced convection. However, warmer SSTs over the tropical Indian Ocean (TIO) may enhance the western part of the western Pacific subtropical high (WPSH) and suppress convection. Further analysis suggests that changes in the atmospheric circulation anomalies over the WNP are related to changes in environmental factors. Concomitantly with the positive SST anomalies over the TPO, a favorable environment for TC genesis in May is present, with stronger low-level relative vorticity and upper-level divergence, smaller vertical wind shear and abundant water vapor. In contrast, the positive SST anomalies over the TIO might lead to an unfavorable environment for TC genesis over the WNP. This study also investigated the joint contributions of the TPO and TIO, and the results indicate that positive SST anomalies over the TPO and negative SST anomalies over the TIO may lead to an increased number of TC geneses. The analysis of the energy budget suggests that the joint activity of the TPO and TIO influences the barotropic eddy kinetic energy conversions and is mainly attributed to the contributions from the meridional shear of the mean zonal winds and the zonal wind convergence. © 2017, Springer-Verlag GmbH Germany. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109123
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, P.O. Box 2718, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Huangfu J.,Chen W.,Ma T.,et al. Influences of sea surface temperature in the tropical Pacific and Indian Oceans on tropical cyclone genesis over the western North Pacific in May[J]. Climate Dynamics,2018-01-01,51(2018-05-06)