| 位涡在暴雨成因分析中的应用 |
| |
| 引用本文： | 王建中,马淑芬.位涡在暴雨成因分析中的应用[J].应用气象学报,1996,7(1):19-27. |
| |
| 作者姓名： | 王建中 马淑芬 |
| |
| 作者单位： | 1.中国气象科学研究院 |
| |
| 基金项目： | 85－906－08－06－06课题 |
| |
| 摘 要： | 应用位涡理论，对1991年江淮地区一次特大暴雨过程中位涡及其有关物理量的分布特征进行了分析。结果表明:强降水总是落在干位涡比较小的地方和湿位涡负中心暖气流一侧，它和相对湿位涡的关系更直接。湿位涡斜压部分可清楚地反映湿斜压性对对流不稳定系统所起的作用。大气在湿位涡值比较小的区域对锋生强迫有更强的响应。
|
| 关 键 词： | 暴雨 位涡 锋生强迫 |
Application of Potential Vorticity Theory to Analysis of Formative Mechanism of Torrential Rain |
| |
| Wang Jianzhong,Ma Shufen,Ding Yihui.Application of Potential Vorticity Theory to Analysis of Formative Mechanism of Torrential Rain[J].Quarterly Journal of Applied Meteorology,1996,7(1):19-27. |
| |
| Authors: | Wang Jianzhong Ma Shufen Ding Yihui |
| |
| Institution: | 1.(Chinese Academy of Meteorological Sciences, Beijing 100081) |
| |
| Abstract: | By using the concept of potential vorticty,the characteristics of potential vorticity and other corresponding physical quantities are analyzed in the process of excessively heavy rain over the Changjiang-Huaihe River basin in 1991. It is shown that the strong precipitation area is located in the lower value area of dry potential vorticity and at the warm side of negative wet potential vorticity center, and it is related directively to relative wet potential vorticity. The baroclinic part of wet potential vorticity can reflect clearly the role of wet baroclinity in the convectively instable systems. There is a stronger response to frontgenetical forcings in the atmosphere where the value of wet potential vorticity is relatively small. |
| |
| Keywords: | Torrential rain Potential vorticity Frontogenetical forcing |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《应用气象学报》浏览原始摘要信息 |
| 点击此处可从《应用气象学报》下载免费的PDF全文 |
