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| 南海夏季风对强热带风暴Bilis(0604)引发暴雨的影响 | |
| 引用本文： | 蒋小平,刘春霞,费志宾,赵思楠,罗万军.南海夏季风对强热带风暴Bilis(0604)引发暴雨的影响[J].热带气象学报,2008,24(4):379-384. |
| 作者姓名： | 蒋小平 刘春霞 费志宾 赵思楠 罗万军 |
| 作者单位： | 1. 解放军理工大学气象学院,江苏,南京,211101;中国气象局广州热带海洋气象研究所,广东,广州,510080 2. 中国气象局广州热带海洋气象研究所,广东,广州,510080 3. 广州军区气象水文中心,广东,广州,510083 4. 总参气象水文局,北京,100081 5. 湛江92689部队气象台,广东,湛江,524091 |
| 基金项目： | 热带海洋气象科研项目，国家自然科学基金 |
| 摘 要： | Bilis(0604)是一个登陆后长久维持并造成了特大暴雨的强热带风暴.通过对常规观测资料、雷达资料和红外卫星云图的分析,发现暴雨过程中不断有中尺度对流系统(MCSs)产生和发展,这些MCSs是造成强暴雨的主要中尺度系统.在此基础上用中尺度模式MM5对Bilis登陆后66 h的过程进行了数值模拟,模拟的雨带和雨量与实况较符合.利用模拟结果,对MCSs的发展过程和特征作了分析,发现Bilis的低压环流和南海夏季风在华南一带交汇,使得华南一带多中尺度涡旋、辐合中心和中尺度辐合线发展,这些系统为中尺度对流系统的生成和维持提供了有利的环境.敏感性试验表明,南海夏季风输送暖湿气流为暴雨区补充不稳定能量和水汽,对暴雨的产生具有十分重要的作用. |
| 关 键 词： | 南海夏季风 中尺度对流系统 |
| 收稿时间： | 2007/3/12 0:00:00 |
| 修稿时间： | 2007/8/22 0:00:00 |
THE INFLUENCE OF SOUTH CHINA SEA SUMMER MONSOON ON THE RAINSTORM ASSOCIATED WITH THE LANDFALLING STRONG TROPICAL STORM BILIS(0604) |
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| JIANG Xiao-ping,LIU Chun-xi,FEI Zhi-bin,ZHAO Si-nan and LUO Wan-jun.THE INFLUENCE OF SOUTH CHINA SEA SUMMER MONSOON ON THE RAINSTORM ASSOCIATED WITH THE LANDFALLING STRONG TROPICAL STORM BILIS(0604)[J].Journal of Tropical Meteorology,2008,24(4):379-384. | |
| Authors: | JIANG Xiao-ping LIU Chun-xi FEI Zhi-bin ZHAO Si-nan and LUO Wan-jun |
| Affiliation: | Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China;Guangzhou Insitute of Tropical and Marine Meteorology, CMA, Guangzhou 510080, China;Guangzhou Insitute of Tropical and Marine Meteorology, CMA, Guangzhou 510080, China;Hydrometeorological Center, Guangzhou Military Area Command; Guangzhou 510083, China;Hydrometeorological Center of the Headquarters of General Staff; Beijing 100081, China;Meteorological Observatory of Army Post No.92689, Zhanjiang 110032, China |
| Abstract: | Bilis(0604) is a strong tropical storm that sustained over land for a long time, bringing torrential rain. Using conventional observation data, radar data and infrared satellite image, we find that the mesoscale convective systems(MCSs) form and develop successively, which cause torrential rain. Then numerical simulation was conducted using MM5 to simulate a 66-h process after Bilis made landfall. The simulated distribution and intensity of precipitation match the observation well. With the simulated result, we analyze the characteristics and process of development of MCS and find that the convergence of tropical depression and South China Sea(SCS) summer monsoon over South China caused the mesoscale vortex, mesoscale convergence center and mesoscale convergence line to form, which are favorable to the development and maintenance of the MCSs. Our sensitivity experiment indicates that the SCS summer monsoon transports unstable energy and water vapor continuously, which is of vital importance to rainstorms. |
| Keywords: | Bilis MM5 |
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