Impact of intraseasonal oscillation on the tropical cyclone track in the South China Sea
Yang, Lei; Du, Yan; Wang, Dongxiao; Wang, Chunzai; Wang, Xin; duyan@scsio.ac.cn
2015
发表期刊CLIMATE DYNAMICS
卷号44期号:5-6页码:1505-1519
文章类型0930-7575
摘要This study investigates the impact of the intraseasonal oscillation (ISO) on tropical cyclone (TC) tracks in the South China Sea (SCS) during 1970-2010. About one third of TCs in the SCS move eastward, while the other two thirds move westward. In the TC genesis peak seasons of June-October (JJASO), the westward moving TCs are controlled by the background TC steering flow of easterly, and the eastward moving TCs by the TC steering flow induced by the ISO. The outgoing longwave radiation and wind fields show that the eastward moving TCs were mostly along the main axis of strong TC steering flow anomaly of westerly associated with the ISO, while the westward moving TCs were only weakly associated with the ISO. An experiment performed with a simple two-level model further confirmed the result. The interannual variation of TC tracks in the SCS is also discussed. It is found that the steering flow anomalies in the SCS mostly favor eastward moving TCs in central Pacific (CP) El Nino and eastern Pacific (EP) El Nino years. However, the eastward flow anomalies are too weak to have strong influence on the majority of the TCs. During La Nina years, TCs in the SCS tend to move westward, possibly related to the westward steering flow anomalies.
部门归属[Yang, Lei; Du, Yan; Wang, Dongxiao; Wang, Xin] Chinese Acad Sci, State Key Lab Trop Oceanog LTO, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Wang, Chunzai] NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA ; LTO
关键词The South China Sea Tropical Cyclone Track Steering Flow Intraseasonal Oscillation Enso
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/344004/15115
专题热带海洋环境国家重点实验室(LTO)
通讯作者duyan@scsio.ac.cn
推荐引用方式
GB/T 7714
Yang, Lei,Du, Yan,Wang, Dongxiao,et al. Impact of intraseasonal oscillation on the tropical cyclone track in the South China Sea[J]. CLIMATE DYNAMICS,2015,44(5-6):1505-1519.
APA Yang, Lei,Du, Yan,Wang, Dongxiao,Wang, Chunzai,Wang, Xin,&duyan@scsio.ac.cn.(2015).Impact of intraseasonal oscillation on the tropical cyclone track in the South China Sea.CLIMATE DYNAMICS,44(5-6),1505-1519.
MLA Yang, Lei,et al."Impact of intraseasonal oscillation on the tropical cyclone track in the South China Sea".CLIMATE DYNAMICS 44.5-6(2015):1505-1519.
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