| 祁连山夏季西南气流背景下地形云形成和演化的观测研究 |
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| 引用本文： | 陈添宇,郑国光,陈跃,付双喜.祁连山夏季西南气流背景下地形云形成和演化的观测研究[J].高原气象,2010,29(1):152-163. |
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| 作者姓名： | 陈添宇 郑国光 陈跃 付双喜 |
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| 作者单位： | 1. 甘肃省人工影响天气办公室， 甘肃 兰州730020;
2. 中国气象局， 北京100081;;3. 中国气象科学研究院人工影响天气研究所， 北京100081 |
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| 基金项目： | 国家自然科学基金重点项目(40533015)资助 |
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| 摘 要： | 利用2007年祁连山地形云的观测试验资料,分析了祁连山夏季西南气流背景下地形云的演化过程,得到了祁连山地形云发展和演变的概念模型。(1)祁连山地形云的水汽主要分布在3500～6500m的范围内,对流层中层的西南气流将水汽由南向北输送到祁连山区。(2)祁连山区水汽比较丰沛,凝结高度和自由对流高度均较低,当湿气团抬升到凝结高度以上时对流有效位能很容易释放,形成有利于产生降水的云系。(3)祁连山每个山峰南北侧昼间的谷风会在山峰辐合抬升,众多山峰形成的祁连山群谷风的抬升作用下容易形成沿山脊排列的中β对流云带,在高空西南气流的推动下移到北侧,是造成北侧降水比南侧大的原因之一。
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| 关 键 词： | 祁连山 西南气流 地形云 观测试验 |
Observational Experiment on Generation and Development of Summer Orographic Cloud during the Southwest Air Current Pattern in Qilian Mountain |
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| CHEN Tian-yu,ZHENG Guo-guang,CHEN Yue,FU Shuang-xi.Observational Experiment on Generation and Development of Summer Orographic Cloud during the Southwest Air Current Pattern in Qilian Mountain[J].Plateau Meteorology,2010,29(1):152-163. |
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| Authors: | CHEN Tian-yu ZHENG Guo-guang CHEN Yue FU Shuang-xi |
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| Affiliation: | 1. Gansu Weather Modification Office;Lanzhou 730020;China;2. China Meteorological Administration;Beijing 100081;3. Institute of Weather Modification;Chinese Academy of Meteorological Science;China |
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| Abstract: | The summertime orographic cloud evolution under the southwest air current pattern condition has been analyzed and the concept model of orographic cloud development and evolution has been obtained based on the analysis of the dataset observed in Qilian Mountain during the summer of 2007. The primary results include:(1) The water vapor of orographic clouds under the southwest air current pattern condition is mainly located in the heights of 3500~6500 m (ASL),and moved from south to north of Qilian Mountain by... |
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| Keywords: | Qilian mountain Southwest air current Orographic cloud Observational experiment |
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