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中国农学通报 ›› 2014, Vol. 30 ›› Issue (14): 268-275.doi: 10.11924/j.issn.1000-6850.2013-2370

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

2011.7山西区域性暴雨天气过程诊断分析

王正旺 刘新莹 魏建军 杨梅红   

  • 收稿日期:2013-09-05 修回日期:2013-09-22 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    长治市星火科技项目“长治寒潮灾害天气预报研究”(200904031);山西省气象局重点项目“初终霜冻气候特征及预报研究”(晋气验字2010第13号);山西省科技攻关项目“基于GIS的极端气象灾害预警与评估集成系统”(20090311083)。

Diagnostic Analysis on Regional Rainstorm Weather Process in Shanxi Province in July, 2011

  • Received:2013-09-05 Revised:2013-09-22 Online:2014-05-15 Published:2014-05-15

摘要: 为了进一步研究山西区域性暴雨天气过程的主要成因,利用常规和非常规气象观测与监测资料,对2011年7月1—3日山西区域性暴雨天气,从大尺度环流背景、中低层影响系统、红外卫星云图、不稳定能量及物理量场的空间垂直剖面进行综合分析。结果表明:该次暴雨发生在东高西低副高影响的环流背景下,中低层切变为暴雨主要影响系统,强烈的上升运动、低层辐合高层辐散的流场配置为暴雨提供了有利的动力条件,涡度场与高低空系统的时空分布变化相一致,ki指数≥32℃的高能区、si<0℃的不稳定区域在降水时段始终与中低层切变系统的位相一致,促进了持续性强降水的产生。

关键词: 小麦, 小麦, 蛋白质, 近红外光谱, SPA, RBF神经网络

Abstract: In order to analyze the primary causes of a regional rainstorm in Shanxi Province, based on the data of conventional and unconventional weather observation and monitoring, the regional rainstorm weather process occurred in Shanxi on July 1-3, 2011 was analyzed form the large scale circulation background, low-level affect system, infrared satellite cloud picture, the spatial vertical section of unstable energy and physical quantities field. The results showed that: the rainstorm occurred in the circulation background of east-high and west-low subtropical high affects, low-rise shear became rainstorm major effects stem, strong upward movement, low convergence and high divergence flow field configuration provided favorable dynamic conditions for the heavy rain, vorticity field was consistent with the changes of the high-low air system in time and space distribution, ki index ≥32℃, si<0℃ unstable regions in the precipitation period was always consistent with low-rise shear system in place, promoted the generation of the persistent heavy rain.