|
|||||
|
|
| 暴雨中尺度气旋发展的等熵面位涡分析 | |
| 引用本文： | 寿绍文,李耀辉,范可.暴雨中尺度气旋发展的等熵面位涡分析[J].气象学报,2001,59(5):560-568. |
| 作者姓名： | 寿绍文 李耀辉 范可 |
| 作者单位： | 1. 云南大学, 2. 南京气象学院, 3. 兰州干旱气象研究所, |
| 基金项目： | 国家自然科学基金项目49775259，40075009。 |
| 摘 要： | 利用中尺度模式ＭＭ４对１９９１年７月５～６日的江淮梅雨锋暴雨过程进行了数值模拟。用模式输 出资料，根据湿位涡理论分析了这次暴雨过程中对流层低层的中尺度低涡及地面气旋发生发 展的原因。结果表明，在有利的等熵面形态下，具有较高湿位涡值的高层冷空气沿等熵面快 速向南下降的过程中绝对涡度增加，导致了气旋性涡旋的发展加强。 |
| 关 键 词： | 湿位涡 等熵面 中尺度气旋发生。 |
| 收稿时间： | 2000/4/16 0:00:00 |
| 修稿时间： | 2000年4月16日 |
ISENTROPIC POTENTIAL VORTICITY ANALYSIS OF THE MESOSCALE CYCLONE DEVELOPMENT IN A HEAVY RAIN PROCESS |
|
| Shou Shaowen,Li Yaohui and Fan Ke.ISENTROPIC POTENTIAL VORTICITY ANALYSIS OF THE MESOSCALE CYCLONE DEVELOPMENT IN A HEAVY RAIN PROCESS[J].Acta Meteorologica Sinica,2001,59(5):560-568. | |
| Authors: | Shou Shaowen Li Yaohui and Fan Ke |
| Affiliation: | Nanjing Institute of Meteorology, Nanjing 210044;Lanzhou Research Istitute of Drought, Lanzhou 730020;Yunnan University, Kunming 650091 |
| Abstract: | The mesoscale model MM4 was used to simulate the torrential rain associated with Meiyu front occurring in 5-6 July,1991 in the Changjiang Huaihe Basin.Based on the outputs of the model,the cause of the mesoscale cyclogenesis on the lower troposphere has been investigated in terms of the potential vorticity principle.Th e results show that the favorable pattern of the moist isentropic surface and th e cold air slided down along the moist isentropic surface rapidly were the favora ble factors to increase the absolute vorticity,and to cause the cyclogenesis. |
| Keywords: | Moist potential vorticity Isentropic surface Mesoscale cyclogenesis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《气象学报》浏览原始摘要信息 | |
| 点击此处可从《气象学报》下载全文 | |
