Effects of the East Asian Summer Monsoon on Tropical Cyclone Genesis over the South China Sea on an Interdecadal Time Scale
文献类型：期刊论文
| 作者 | Wang, X ; Zhou, W ; Li, CY ; Wang, DX |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2012 |
| 卷号 | 29期号:2页码:249-262 |
| 关键词 | tropical cyclone subtropical jet stream South China Sea |
| ISSN号 | 0256-1530 |
| 通讯作者 | wenzhou@cityu.edu.hk |
| 中文摘要 | Tropical cyclone (TC) genesis over the South China Sea (SCS) during 1965-2004 was analyzed. The locations of TC genesis display evident seasonal changes, with the mean position of formation situated north of 15 degrees N in summer (June-July-August) and south of 15 degrees N in autumn (September-October-November). The TC genesis in summer underwent dramatic interdecadal variations, with more and less TC frequency during 1965-1974/1995-2004 and 1979-1993, respectively. In contrast, a significant interannual variation of TC genesis with a period of similar to 4 years was observed in autumn. This study investigated the relationship of SCS TC genesis to the East Asian jet stream (EAJS) and the western North Pacific subtropical high (WNPSH) on an interdecadal time scale. Analysis and comparison of the impacts of the EAJS and the WNPSH on vertical wind shear changes indicate that changes in the WNPSH and EAJS intensity rather than EAJS meridional location are responsible for changes in TC genesis on an interdecadal time scale. Corresponding to a weaker EAJS, anomalous Rossby wave energy at upper levels displays equatorward propagation at midlatitudes and poleward propagation in the subtropics. This induces anomalous convergence and divergence of wave activity fluxes in East Asia around 30 degrees N and the SOS, respectively. The anomalous divergence of wave activity fluxes reduces easterlies at upper levels over the SCS, which is favorable to TC genesis. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000300530700004 |
| 公开日期 | 2013-08-28 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10201]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Wang, X,Zhou, W,Li, CY,et al. Effects of the East Asian Summer Monsoon on Tropical Cyclone Genesis over the South China Sea on an Interdecadal Time Scale[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2012,29(2):249-262. |
| APA | Wang, X,Zhou, W,Li, CY,&Wang, DX.(2012).Effects of the East Asian Summer Monsoon on Tropical Cyclone Genesis over the South China Sea on an Interdecadal Time Scale.ADVANCES IN ATMOSPHERIC SCIENCES,29(2),249-262. |
| MLA | Wang, X,et al."Effects of the East Asian Summer Monsoon on Tropical Cyclone Genesis over the South China Sea on an Interdecadal Time Scale".ADVANCES IN ATMOSPHERIC SCIENCES 29.2(2012):249-262. |
入库方式： OAI收割
来源：南海海洋研究所
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