干旱气象

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X波段双偏振雷达对不同坡度地形云探测个例分析

  

  1. 1.青海省人工影响天气办公室,青海 西宁 810001;
    2.中国气象科学研究院,北京 100081;
    3.中国瓦里关大气本底观象台,青海 西宁 810001;
    4.青海省气象科学研究所,青海 西宁 810001
  • 出版日期:2015-08-31 发布日期:2015-08-31
  • 作者简介:马学谦(1977- ),青海乐都人,高级工程师,研究方向为云和降水物理及雷达气象.
  • 基金资助:

    公益性行业(气象)科研专项(GYHY200906024)和国家自然科学基金项目(41165008)共同资助

Analysis of Topographic Cloud on Different Slope Observed by X-band Dual-polarized Radar

  1. 1. Weather Modification Office of Qinghai Province, Xining 810001, China;
    2. Chinese Academy of Meteorological Sciences, Beijing 100081, China;
    3. Chinese Atmospheric Baseline Observatory in Waliguan, Xining 810001, China;
    4. Qinghai Academy of Meteorological Sciences, Xining 810001, China
  • Online:2015-08-31 Published:2015-08-31

摘要:

利用X波段双偏振多普勒雷达观测的祁连地区地形云个例资料,对比分析了3°、9°和14°坡度与不同影响气流下形成的地形云特征。结果表明,夏季祁连地区在不同影响气流和不同坡度条件下形成的地形云差异显著,沿坡生成的单体数量、强度及内部动力、微物理过程和优势粒子分布特征均有明显差异,深入研究不同条件下的地形云将有助于科学开展地形云人工增雨作业。

关键词: 地形云, 不同坡度, 外场试验, 偏振雷达

Abstract:

Based on the topographic cloud cases over Qilian Mountain observed by X-band dual-polarized Doppler weather radar, the characteristics of different topographic clouds on 3°, 9° and 14° terrain slope and different weather systems were analyzed. The results showed that the topographic clouds over Qilian Mountain in summer were significantly different under different terrain slope and airflow of weather system conditions. These differences appeared in the number, intensity, internal motivation, microphysical process and dominant particle distribution of cloud cells. Therefore, the further research about topographic clouds with different conditions would be help to scientifically carry out artificial rainfall of topographic clouds.

Key words: topographic cloud, different topographic slope, outfield experience, dual-polarized radar

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