| 南海-西北太平洋季风槽中热带气旋群发的研究Ⅱ.影响机制研究 |
| |
| 引用本文： | 高建芸,吕心艳,张秀芝,江志红.南海-西北太平洋季风槽中热带气旋群发的研究Ⅱ.影响机制研究[J].海洋学报,2011,33(3):28-37. |
| |
| 作者姓名： | 高建芸 吕心艳 张秀芝 江志红 |
| |
| 作者单位： | 1.福建省气候中心,福建 福州 350001 |
| |
| 基金项目： | 国家自然科学基金项目(40775047;40775058 ;90915002);福建省科技厅青年人才项目(2007F3019);江苏省气象灾害重点实验室(南京信息工程大学)开放课题资助 (KLME0708)。 |
| |
| 摘 要： | 应用1979-2005年西北太平洋热带气旋(TC)资料和OLR,NCEP/DOE AMIP-Ⅱ再分析逐日资料,探讨南海-西北太平洋季风槽中TC(简称MTTC)群发的可能机理,得到以下几点结论:(1)5～10月季风槽强度及形态与索马里越赤道气流的强弱、副高的位置以及南半球澳洲冬季风的强弱密切相关,不同区域季风槽强度增强都...
|
| 关 键 词： | 南海-西北太平洋季风槽 热带气旋 群发 影响机制 |
| 收稿时间： | 2009/6/27 0:00:00 |
Research on the cluster of tropical cyclogenesis in the South China Sea-western north Pacific monsoon trough Ⅱ. Mechanism of the influence |
| |
| GAO Jian-yun,LV Xin-yan,ZHANG Xiu-zhi and JIAN Zhi-hong.Research on the cluster of tropical cyclogenesis in the South China Sea-western north Pacific monsoon trough Ⅱ. Mechanism of the influence[J].Acta Oceanologica Sinica (in Chinese),2011,33(3):28-37. |
| |
| Authors: | GAO Jian-yun LV Xin-yan ZHANG Xiu-zhi and JIAN Zhi-hong |
| |
| Institution: | 1.Fujian Climate Center, Fuzhou 350001,China2.Chinese Academy of Meteorological Sciences,Beijing 100081,China3.National Climate Center,Beijing 100081,China4.Jiansu Key Laboratory of Meteorological Disaster(Nanjing University of Information Science & Technology),Nanjing 210044,China |
| |
| Abstract: | By using the western north Pacific tropical cyclone(TC)data, OLR data and the NCEP/DOE AMIP-Ⅱ reanalysis daily data during 1979-2005, the possible mechanism of the cluster of TCs in the South China Sea (SCS)-western north Pacific monsoon trough (CTC) are discussed, the main results are as follows: (1)During May-October, the intensity and pattern of monsoon trough are closely related to the strength of Somalia’s cross-equatorial flow, the location of western north Pacific subtropical high (WNPSH) and the intensity of the Southern Hemisphere Australian winter monsoon. Enhanced intensity of monsoon trough in different regions may lead to CTC. (2) CTC and the low-frequency oscillations of monsoon trough are closely connected.. the CTC often occurs when the monsoon trough is in the active phase both of 10~20 and 30~60 d oscillations . (3) CTC is affected by intensity and pattern of monsoon trough which are related to the location of WNPSH, the intra-seasonal oscillation phases of cross-equatorial flows over the Somalia and western Pacific. It supplies favorable conditions to CTC when WNPSH retreats to eastward or is in the north of mean and the cross-equatorial flows enhance either over Somalia or the western Pacific, as well as enhance in both of them. When WNPSH is west and south to the normal, the cross-equatorial flows enhance over Somalia area or the western Pacific, the monsoon trough is located southward leading to less CTC. (4) Typical cases analysis shows that CTC exhibits inter-annual variation due to the different convection and moisture conditions in the main TC generating areas which are caused by the different intensity and pattern of monsoon trough. |
| |
| Keywords: | South China Sea-western north Pacific monsoon trough cluster of tropical cyclogenesis mechanism of influence |
|
| 点击此处可从《海洋学报》浏览原始摘要信息 |
| 点击此处可从《海洋学报》下载免费的PDF全文 |
|
