Precursor synoptic-scale disturbances associated with tropical cyclogenesis in the South China Sea during 2000-2011
Yuan, Jinnan; Li, Tim; Wang, Dongxiao; yuanjn@grmc.gov.cn
2015
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
卷号35期号:12页码:3454-3470
摘要Precursor synoptic disturbance characteristics associated with 35 tropical cyclone (TC) genesis events in the South China Sea (SCS) during 2000-2011 were examined. All genesis events occurred between May and December. Six types of precursor synoptic disturbances are identified, and their low-level composite patterns are constructed. They are synoptic-scale wave train (29%), TC energy dispersion (14%), Pacific easterly wave (9%), Borneo vortex (11%), TC southwesterly shear induced vortex (23%), and others (14%). In 13 (22) of 35 genesis cases, precursor perturbations originated within (outside of) the SCS. The satellite IR image data are used to analyse mesoscale convective activity prior to TC genesis. It is found that mesoscale convective systems were observed at 83% of the genesis cases, whereas 54% of the genesis cases experienced multiple mesoscale convective system development at a single time. Most of synoptic disturbances associated with the tropical cyclogenesis occurred in the region where atmospheric quasi-biweekly oscillation (QBW) and Madden-Julian oscillation (MJO) modes are in an active phase. The synoptic disturbances-associated TC genesis events in the SCS are strongly modulated by atmospheric low-frequency oscillations (especially the MJO). Meanwhile, favourable precursor sea surface temperature signals are observed, primarily on the 10- to 20-day and 20- to 90-day timescales.
部门归属[Yuan, Jinnan; Wang, Dongxiao] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou, Guangdong, Peoples R China; [Yuan, Jinnan] China Meteorol Adm, Guangzhou Inst Trop & Marine Meteorol, Guangzhou 510080, Guangdong, Peoples R China; [Yuan, Jinnan] Univ Chinese Acad Sci, Beijing, Peoples R China; [Li, Tim] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; [Li, Tim] Nanjing Univ Informat Sci & Technol, CDRC ESMC, Int Lab Climate & Environm Change, Nanjing, Jiangsu, Peoples R China ; LTO
关键词Synoptic-scale Disturbances Tropical Cyclogenesis South China Sea
学科领域Meteorology & Atmospheric Sciences
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/14911
专题热带海洋环境国家重点实验室(LTO)
通讯作者yuanjn@grmc.gov.cn
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Yuan, Jinnan,Li, Tim,Wang, Dongxiao,et al. Precursor synoptic-scale disturbances associated with tropical cyclogenesis in the South China Sea during 2000-2011[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2015,35(12):3454-3470.
APA Yuan, Jinnan,Li, Tim,Wang, Dongxiao,&yuanjn@grmc.gov.cn.(2015).Precursor synoptic-scale disturbances associated with tropical cyclogenesis in the South China Sea during 2000-2011.INTERNATIONAL JOURNAL OF CLIMATOLOGY,35(12),3454-3470.
MLA Yuan, Jinnan,et al."Precursor synoptic-scale disturbances associated with tropical cyclogenesis in the South China Sea during 2000-2011".INTERNATIONAL JOURNAL OF CLIMATOLOGY 35.12(2015):3454-3470.
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