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农学学报

农学学报 ›› 2015, Vol. 5 ›› Issue (8): 59-64.doi: 10.11923/j.issn.2095-4050.cjas15010005

所属专题： 农业气象

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

天水地区一场夏季暴雨天气过程分析

王小龙,朱拥军,李悦   

  1. 天水市气象局 甘肃 天水 741000,天水市气象局 甘肃 天水 741000,天水市气象局 甘肃 天水 741000
  • 收稿日期:2015-01-06 修回日期:2015-02-09 接受日期:2015-02-25 出版日期:2015-08-27 发布日期:2015-08-27
  • 通讯作者: 王小龙 E-mail:qxtwxl@126.com
  • 基金资助:
    基金项目：西北区强对流预报预警业务平台 项目编号：QDLYJ2013-001

The analysis of a heavy rainfall process in summer over Tianshui

王小龙,朱拥军 and 李悦   

  • Received:2015-01-06 Revised:2015-02-09 Accepted:2015-02-25 Online:2015-08-27 Published:2015-08-27

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摘要： 为了提高天水地区暴雨预报及服务能力，利用天水地区所有自动站资料、高空资料以及Micaps实况资料，对天水2010年8月12日发生的一次暴雨天气过程进行分析。结果表明：（1）此次暴雨过程主要是由位于甘肃南部的低涡切变形成；（2）形成此次暴雨过程的水汽主要来源地是南海，另外还有来自高原和孟加拉湾的水汽作为补充；（3）高低空急流的耦合作用对此次暴雨的发生具有一定的引导和促进作用；（4）高空辐散、低空辐合的流场形势引发强烈的上升运动，是此次强降水发生不可或缺一个重要条件；（5）通过分析此次过程的垂直速度场可知，持续的上升运动不断触发不稳定能量的释放，为暴雨的发生发展提供了必要的能量条件。

关键词: 盐碱土, 盐碱土, 改良, 有机酸, 黑曲霉, 筛选

Abstract: In order to improve the forecasting and service ability of heavy rainfall in Tianshui，based on of all automatic station data, sounding data and Micaps actual data, he author analyzed a heavy rainfall weather process occurred in August 12, 2010 in tianshui. Results indicated that the heavy rain occured associated with the vortex shear line in the south of Gansu Province. The moisture transports coming from the SCS to Tianshui was main sources of the heavy rainfall process and the moisture transports from the Qinghai-Tibet Plateau and upstream of Indian Ocean played complementary roles. The coupling interaction of the high and low-level jet had a certain guide and promote role in the heavy rainfall process. Upper air divergence and the flow field of low convergence situation caused strong upward movement, which was a necessary condition for the heavy rainfall. According to the analysis of the vertical velocity field, it was favorable to the occurrence and development of heavy rain as constant upward movement to trigger the release of unstable energy.