Upper-tropospheric environment-tropical cyclone interactions over the western North Pacific: A statistical study
Qian, Yu-Kun; Liang, Chang-Xia; Yuan, Zhuojian; Peng, Shiqiu; Wu, Junjie; Wang, Sihua; Qian, YK (reprint author), Sun Yat Sen Univ, Dept Atmospher Sci, Ctr Monsoon & Environm Research, Guangzhou 510275, Guangdong, Peoples R China.; Qian, YK (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
2016
发表期刊ADVANCES IN ATMOSPHERIC SCIENCES
卷号33期号:5页码:614-631
摘要Based on 25-year (1987-2011) tropical cyclone (TC) best track data, a statistical study was carried out to investigate the basic features of upper-tropospheric TC-environment interactions over the western North Pacific. Interaction was defined as the absolute value of eddy momentum flux convergence (EFC) exceeding 10 m s(-1) d(-1). Based on this definition, it was found that 18% of all six-hourly TC samples experienced interaction. Extreme interaction cases showed that EFC can reach similar to 120 m s(-1) d(-1) during the extratropical-cyclone (EC) stage, an order of magnitude larger than reported in previous studies. Composite analysis showed that positive interactions are characterized by a double-jet flow pattern, rather than the traditional trough pattern, because it is the jets that bring in large EFC from the upper-level environment to the TC center. The role of the outflow jet is also enhanced by relatively low inertial stability, as compared to the inflow jet. Among several environmental factors, it was found that extremely large EFC is usually accompanied by high inertial stability, low SST and strong vertical wind shear (VWS). Thus, the positive effect of EFC is cancelled by their negative effects. Only those samples during the EC stage, whose intensities were less dependent on VWS and the underlying SST, could survive in extremely large EFC environments, or even re-intensify. For classical TCs (not in the EC stage), it was found that environments with a moderate EFC value generally below similar to 25 m s(-1) d(-1) are more favorable for a TC's intensification than those with extremely large EFC.
部门归属[Qian, Yu-Kun; Yuan, Zhuojian] Sun Yat Sen Univ, Dept Atmospher Sci, Ctr Monsoon & Environm Research, Guangzhou 510275, Guangdong, Peoples R China; [Qian, Yu-Kun; Peng, Shiqiu] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Liang, Chang-Xia] South Ocean Adm, South China Sea Marine Predict Ctr, Guangzhou 510300, Guangdong, Peoples R China; [Wu, Junjie] Civil Aviat Flight Univ China, Guanghan 618307, Peoples R China; [Wang, Sihua] Luogang Dist Meteorol Bur, Guangzhou 510530, Guangdong, Peoples R China ; LTO
关键词Tropical Cyclone-trough Interaction Upper Troposphere Eddy Momentum Flux Convergence
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/344004/15372
专题热带海洋环境国家重点实验室(LTO)
通讯作者Qian, YK (reprint author), Sun Yat Sen Univ, Dept Atmospher Sci, Ctr Monsoon & Environm Research, Guangzhou 510275, Guangdong, Peoples R China.; Qian, YK (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
推荐引用方式
GB/T 7714
Qian, Yu-Kun,Liang, Chang-Xia,Yuan, Zhuojian,et al. Upper-tropospheric environment-tropical cyclone interactions over the western North Pacific: A statistical study[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2016,33(5):614-631.
APA Qian, Yu-Kun.,Liang, Chang-Xia.,Yuan, Zhuojian.,Peng, Shiqiu.,Wu, Junjie.,...&Qian, YK .(2016).Upper-tropospheric environment-tropical cyclone interactions over the western North Pacific: A statistical study.ADVANCES IN ATMOSPHERIC SCIENCES,33(5),614-631.
MLA Qian, Yu-Kun,et al."Upper-tropospheric environment-tropical cyclone interactions over the western North Pacific: A statistical study".ADVANCES IN ATMOSPHERIC SCIENCES 33.5(2016):614-631.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。