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| 台风“桑美”的数值模拟和地形敏感性试验 | |
| 引用本文： | 马玉芬,沈桐立,丁治英,张广兴.台风“桑美”的数值模拟和地形敏感性试验[J].南京气象学院学报,2009,32(2):277-286. |
| 作者姓名： | 马玉芬 沈桐立 丁治英 张广兴 |
| 作者单位： | 1. 南京信息工程大学气象灾害省部共建教育部重点实验室,江苏,南京,210044;中国气象局乌鲁木齐沙漠气象研究所,新疆,乌鲁木齐,830002 2. 南京信息工程大学气象灾害省部共建教育部重点实验室,江苏,南京,210044 3. 中国气象局乌鲁木齐沙漠气象研究所,新疆,乌鲁木齐,830002 |
| 基金项目： | 国家自然科学基金，中国气象科学院灾害天气国家重点实验室基金 |
| 摘 要： | 用WRF模式对0608号台风“桑美”进行了数值模拟研究,较为成功地模拟出了台风路径和降水,但模拟的台风中心气压远高于实况。为研究“桑美”登陆期间地形的抬升作用对其降水及结构的影响,通过改变特定区域内的地形高度设计了一组敏感性试验。结果表明,台风登陆过程中地形抬升作用对台风降雨量有显著的增幅作用;台风中心位势涡度、气流垂直上升速度、水平水汽通量散度明显增大;地形抬升机制在台风登陆时刻达到最强。 |
| 关 键 词： | 台风数值模拟 地形敏感性试验 位势涡度 垂直速度 Q矢量散度 水汽通量散度 |
Numerical Simulation and Orographic Sensitive Experiments of Typhoon Saomai during Landfall |
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| MA Yu-fen,SHEN Tong-li,DING Zhi-ying,ZHANG Guang-xing.Numerical Simulation and Orographic Sensitive Experiments of Typhoon Saomai during Landfall[J].Journal of Nanjing Institute of Meteorology,2009,32(2):277-286. | |
| Authors: | MA Yu-fen SHEN Tong-li DING Zhi-ying ZHANG Guang-xing |
| Institution: | 1.Key Laboratory of Meteorological Disaster of Ministry of Education;NUIST;Nanjing 210044;China;2.Urumqi Institute of Desert Meteorology;China Meteorological Administration;Urumqi 830002;China |
| Abstract: | A simulation experiment is conducted using the WRF model and the track and 24 h accumulative rainfall is successfully modeled,but the simulated central pressure of Saomai is much higher than that of the real situation.To study the orographic uplifting effect upon the rainstorm and the structure of typhoon Saomai(0608) during the landfall,a set of orographic sensitive experiments are further carried out by changing the terrain altitude within the selected area.It is concluded that during the landfall of Saom... |
| Keywords: | numerical simulation of typhoon orographic sensitive experiment potential vorticity vertical velocity moisture flux divergence |
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