| 安徽一次暴雨过程的数值模拟与诊断分析 |
| |
| 引用本文： | 张添姿,潘晓滨,臧增亮,尹伊.安徽一次暴雨过程的数值模拟与诊断分析[J].安徽农业科学,2016(28):179-182. |
| |
| 作者姓名： | 张添姿 潘晓滨 臧增亮 尹伊 |
| |
| 作者单位： | 1. 解放军理工大学气象海洋学院,江苏南京,211101;2. 中国人民解放军93956部队,甘肃张掖,734015 |
| |
| 摘 要： | 利用1°×1°的GFS分析场数据和中尺度数值模式WRF,对2014年5月31日~6月1日发生在安徽阜阳的一次暴雨天气过程进行数值模拟和诊断分析。结果表明,WRF模式能够近似地模拟此次降雨过程;高低空急流耦合是此次暴雨过程发生和维持的主要影响机制;暴雨中心上空垂直螺旋度呈现高层负、低层正的分布,这也是触发暴雨的重要机制;降水开始前,大气呈现上湿下干的湿度分布,这种大气层结很不稳定,易导致降雨的发生。
|
| 关 键 词： | 暴雨 数值模拟 环流形势 物理量 |
Numerical Simulation and Diagnostic Analysis of a Rainstorm Process in Anhui Province |
| |
| Abstract: | Based on the 1°×1°analysis field data from GFS (Global Forecasting System),with a mesoscale numerical model WRF (Weather Research and Forecasting model) ,a torrential rain occurred in Anhui Province from 31 May to 1 June ,2014 was simulated and diagnostically ana-lyzed.The results showed that WRF model has a good forecasting ability in a rainfall process;the coupling of the low-level and upper-level jet was the main dynamical mechanism of the out-breaking of this torrential rain process;the vertical helicity at the upper levels was negative while at the lower levels,it was positive; the atmosphere humidity at the upper levels was damp while at the lower levels it was dry before precipitation. |
| |
| Keywords: | Heavy rainfall Numerical simulation Circulation situation Physical quantity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
