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| 非地转湿Q矢量分解在暴雨分析中的应用 | |
| 引用本文： | 杨晓霞,沈桐立,刘还珠,薛德强,万丰.非地转湿Q矢量分解在暴雨分析中的应用[J].高原气象,2006,25(3):464-475. |
| 作者姓名： | 杨晓霞 沈桐立 刘还珠 薛德强 万丰 |
| 作者单位： | 1. 山东省气象中心,山东,济南,250031 2. 南京信息工程大学,江苏,南京,210044 3. 中国气象局,国家气象中心,北京,100081 |
| 基金项目： | 中国科学院资助项目 , 山东省气象局资助项目 |
| 摘 要： | 利用非地转湿Q矢量对山东省春秋季两次罕见的暴雨天气进行了诊断分析。分析结果表明:暴雨期间都有较强的非地转湿Q矢量辐合,产生上升运动,形成暴雨。这一结果也表明凝结潜热加热对暴雨的产生有着重要的作用。本文进一步把非地转湿Q矢量分解为平行于等位温线和垂直于等位温线两部分。揭示在这两场暴雨过程中,虽然都有中尺度和大尺度辐合上升运动作用的叠加,但在春季暴雨的个例中,垂直于等位温线的非地转湿Q矢量的辐合与总的非地转湿Q矢量的辐合相接近,暴雨以中尺度上升运动为主。而在秋季暴雨的个例中,平行于等位温线的非地转湿Q矢量的辐合与总的非地转湿Q矢量的辐合在形状上相似,在强度上偏强,暴雨的上升运动以大尺度为主,中间夹杂着中小尺度的上升运动,降水以混合型为主。 |
| 关 键 词： | 山东暴雨 非地转湿Q矢量 分解 诊断分析 |
| 文章编号： | 1000-0534（2006）03-0464-12 |
| 收稿时间： | 2005-07-01 |
| 修稿时间： | 2005-07-012005-12-23 |
Application of the Wet Q Vector Partitioning Method to the Diagnosis of the Heavy Rainstrom |
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| YANG Xiao-xia,SHEN Tong-li,LIU Huan-zhu,XUE De-qiang,WAN Feng.Application of the Wet Q Vector Partitioning Method to the Diagnosis of the Heavy Rainstrom[J].Plateau Meteorology,2006,25(3):464-475. | |
| Authors: | YANG Xiao-xia SHEN Tong-li LIU Huan-zhu XUE De-qiang WAN Feng |
| Institution: | 1. Shandong Meteorological Center, Jinan 250031, China; 2. Nanjing University of Information Science and Technology, Nanjing 210044, China; 3. National Meteorological Center, China Meteorological Administration, Beijing 100081, China |
| Abstract: | Using the ageostrophic wet Q vector to analyze diagnosticallytwo rare heavy rainstorms(one in springand the other in autumn) in Shandong,the results show that the strong ageostrophic wet Q vector convergence forces ascending motions and produces storm rainfall,and that the condensation latent heating plays an important role in producing rainstorm.By dividing the ageostrophic wet Q vector into two parts of parallel and perpendicular to isotherms,the results show that there is superposition of meso-scale and large-scale ascending motions in the two heavy rainstorm,especially in the rain storm of spring,the ageostrophic wet Q vector convergence,perpendicular to isotherms,is approachingto the total ageostrophic wet Q vector convergence,which is nearly the same,parallel to isotherms in the autumn,which also has similar distribution and stronger intensity to the total convergence,so that the meso-scale ascending motion is primaryin the spring,while the large-scale ascending motion is dominantand concomitantwith the mesoscale ascending motion in the autumn,with mainly mixed types of precipitation. |
| Keywords: | Shandong heavy rain storm Ageostrophic wet Q vector Partitioning Diagnosis analyses |
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