江淮地区对流云结构特征分析.PDF

安徽农业大学学报, 2011, 38(6): 961-965 Journal of Anhui Agricultural University [DOI]CNKI：34-1162/S1539.002 网络出版时间：2011-10-31 15:39:06 [URL]/kcms/detail/34.1162.S1539.002.html 江淮地区对流云结构特征分析 赵 光，吴汪毅 (安徽省人工影响天气办公室，合肥 230031) 摘 要：对流云发展到一定时期,常常会产生一些强对流天气,如短时强降水、大风、冰雹等，这些灾害性天气 往往会给农业生产带来不利的影响。多年来，人们一直致力于强对流天气的研究工作。作者利用合肥多普勒雷达6 层仰角（0.5,1.5,2.4,3.4,4.3,6.0 ）的基本反射率、回波顶高、垂直积分液态水（VIL ）每隔6 min 的资料，分析了江 淮试验区2003 年8 月5 日对流云的初生、合并、发展、消散的演变过程,试图找出江淮地区对流云的结构特征。 关键词：结构特征；对流云；回波强度 中图分类号：P426.5 文献标识码：A 文章编号：1672−352X (2011)06−0961−05 Analysis of structural characteristics of convective clouds in Yangtze-Huaihe area ZHAO Guang ，WU Wang-yi (Anhui Weather Modification Office，Hefei 230031) Abstract: It will bring some strong convection weather such as short-range precipitation, strong wind, hail, and so on, when the convective clouds develop to a certain period. This disaster weather often exerts a negative effect in agricultural production. Researchers have been committed to the strong convective weather study for many years. In this paper, based on the Doppler 6-minute data in Hefei including the base reflectivity, echo tops, vertically integrated liquid (VIL) with 6-layer elevation (0.5, 1.5, 2.4, 3.4, 4.3, 6.0), the evolution process of con- vective clouds containing newborn, mergers, development and dissipation in Yangtze-Huaihe experiment area on August 5, 2003 are analyzed, trying to reveal the structure characteristics of convective clouds in this area. Key words: structure characteristics; convective clouds; radar echo 对流云降水对地球上的水分平衡具有十分重要 结构特征，所得结论对江淮地区对流云的监测预警 的意义，全球有 3/4 的雨水来自对流云。对流云是 有一定的促进作用。 我国夏季的主要降水云系，由于云底温度较高，云