Study on the Relationship Between Mesoscale Wind Field Changes and Rainstorm Using Windprofiler Data

  • ZHOU Xinyu ,
  • LIAO Fei ,
  • SUN Guangfeng
Expand
  • Guangzhou Meteorological Observatory, Guangzhou 510080, China;2. Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080, China

Received date: 2013-01-07

  Online published: 2015-04-28

Abstract

By using the windprofiler data, this paper studies the relationship between mesoscale wind field changes and rainstorm. Firstly, it is indicated that the high spatial and temporal resolution data can clearly reveal the effect of mesoscale wind filed changes such as low-level jet and low-level wind shear before the heavy precipitation happens. Before the heavy precipitation happens, the strong wind field and the momentum continuously go downstream, making the low-level positive vorticity increase, with the warm and humid air, trigger the precipitation. Secondly, an index I is designed to represent the intensity and height of the low-level jet, the index will increase rapidly before the heavy precipitation. Thirdly, the low-level vertical wind shear increases significantly, and it plays a significant role in triggering the generation of heavy precipitation.

Cite this article

ZHOU Xinyu , LIAO Fei , SUN Guangfeng . Study on the Relationship Between Mesoscale Wind Field Changes and Rainstorm Using Windprofiler Data[J]. Plateau Meteorology, 2015 , 34(2) : 526 -533 . DOI: 10.7522/j.issn.1000-0534.2013.00188

References

[1]黄治勇, 周志敏, 徐桂荣, 等. 风廓线雷达和地基微波辐射计在冰雹天气监测中的应用[J]. 高原气象, 2015, 34(1): 269-278, doi: 10.7522/j.issn.1000-0534.2013.00130.
[2]肖艳姣, 万玉发, 吴涛, 等. 基于多普勒天气雷达的两种垂直风廓线反演方法的对比分析[J]. 高原气象, 2015, 34(1): 288-297, doi: 10.7522/j.issn.1000-0534.2013.00136.
[3]Zhong Shiyuan, Fast J D, Bian Xindi. A case study of the great plains low-level jet using wind profiler network data and a high-resolution mesoscale model[J]. Mon Wea Rev, 1996, 124(5): 785-806.
[4]Peter T M, Jameson A R, Thomas D K, et al. A comparison between polarimetric radar and wind profiler observations of precipitation in tropical showers[J]. J Appl Meteor, 2001, 40(10): 1702-1717.
[5]Peter T M, Jameson A R, Thomas D K, et al. Combined wind profiler polarimetric radar studies of the vertical motion and microphysical characteristics of tropical sea-breeze thunder storms[J]. Mon Wea Rev, 2002, 130(9): 2228-2239.
[6]Gage K S, Nastrom G D. Relationship of precipitation to vertical motion observed directly by a VHF wind profiler during a spring upslope storm near Denver, Colorado[J]. Bull Meteor Amer Soc, 1985: 66(4): 394-397.
[7]Peter T M, Thomas D K. Evaluation of microphysical retrievals from polarimetric radar with wind profiler data[J]. J Appl Meteor, 2005, 44(6): 837-838.
[8]张京英, 漆梁波, 王庆华. 用雷达风廓线产品分析一次暴雨与高低空急流的关系[J]. 气象, 2003, 19(3): 285-290.
[9]陶诗言. 登陆我国台风研究概述[J]. 气象科学, 2005, 25(3): 319-329.
[10]刘淑媛, 郑永光, 陶祖钰. 利用风廓线雷达资料分析低空急流的脉动与暴雨关系[J]. 热带气象学报, 2005, 31(12): 41-44.
[11]吴启树, 郑颖青, 沈新勇, 等. 福建一次秋季大范围暴雨成因分析[J]. 气象科学, 2010, 30(1): 126-131.
[12]孙淑清, 翟国庆. 低空急流的不稳定性及其对暴雨的触发作用[J]. 大气科学, 1980, 4(4): 327-337.
[13]苗爱梅, 武捷, 赵海英, 等. 低空急流与山西大暴雨的统计关系及流型配置[J]. 高原气象, 2010, 29(4): 939-946.
[14]孙继松. 北京地区夏季边界层急流的基本特征及形成机理研究[J]. 大气科学, 2005, 29(3): 445-452.
[15]杨毅, 邱崇践. 利用多普勒雷达资料分析一次强降水的中尺度流场[J]. 高原气象, 2006, 25(5): 925-931.
[16]侯瑞钦, 程麟生. 网格嵌套技术对一次中尺度对流系统降水过程模拟的影响[J]. 高原气象, 2006, 25(3): 451-462.
[17]刘淑媛, 郑永光, 陶祖钰. 利用风廓线雷达资料分析低空急流的脉动与暴雨关系[J]. 热带气象学报, 2003, 19(3): 285-290.
[18]Rasmussen E N, Blanchard D O. A baseline climatology of sounding-derived supercell and tornado forecast parameters[J]. Wea Forecasting, 1998, 13(4): 1148-1164.
Outlines

/