| 淮河流域风场垂直结构特征分析 |
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| 引用本文： | 毛文茜,冷文楠,樊旭,肖霞,郭燕玲,赵艳茹,张文煜.淮河流域风场垂直结构特征分析[J].气候与环境研究,2019,24(3):333-340. |
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| 作者姓名： | 毛文茜 冷文楠 樊旭 肖霞 郭燕玲 赵艳茹 张文煜 |
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| 作者单位： | 1.兰州大学大气科学学院半干旱气候变化教育部重点实验室,兰州 7300002.中国科学院大气物理研究所,北京 100029 |
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| 基金项目： | 国家自然科学基金项目41875085,兰州大学中央高校基本科研业务费专项资金lzujbky-2018-k03 |
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| 摘 要： | 为进一步加深南北气候过渡带上山地丘陵地区的风场认识,利用淮南2015年3月至2016年2月ST（Stratosphere-Troposphere）风廓线雷达的探测资料,分析了该地区20 km高度内风场的变化特征及垂直结构。结果表明:淮河流域850 hPa、700 hPa、500 hPa、100 hPa等压面高度上,风场有明显的垂直变化,风速及其波动幅度随春、夏、秋、冬先减小后增大,且随高度增加,夏季最小、冬季最大的季节规律逐渐增强;风场的垂直分布存在差异,在中低层以下,以小于10 m/s的风为主,风向转换多,中低层以上10～25 m/s的偏西风居多;年平均风场结构为低层以5 m/s北风为主,到2 km左右向西偏转,风速小于10 m/s,在5 km高度处形成15 m/s的西风,且风速持续增大,10 km左右达到25 m/s后逐渐减小,到15 km左右风向顺时针向北偏转,直到20 km附近与低空风场相近。
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| 关 键 词： | 淮河流域 风廓线雷达 风场垂直结构 特征分析 |
| 收稿时间： | 2018/1/10 0:00:00 |
Analysis of the Vertical Structure of Wind Fields in Huaihe River Valley |
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| MAO Wenqian,LENG Wennan,FAN Xu,XIAO Xi,GUO Yanling,ZHAO Yanru,ZHANGa Wenyu.Analysis of the Vertical Structure of Wind Fields in Huaihe River Valley[J].Climatic and Environmental Research,2019,24(3):333-340. |
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| Authors: | MAO Wenqian LENG Wennan FAN Xu XIAO Xi GUO Yanling ZHAO Yanru ZHANGa Wenyu |
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| Institution: | 1.College of Atmospheric Sciences, Lanzhou University, Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou 7300002.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | To further understand wind fields in mountains and hilly areas in the north-south climate transition zone, based on the March 2015 to February 2016 observational data of ST (stratosphere-troposphere) wind profiler radar, the variation characteristics, and vertical structure of 20-km high wind fields in Huainan were analyzed. The results show the following: In Huaihe River valley, the wind field exhibited significant vertical changes at 850 hPa, 700 hPa, 500 hPa, and 100 hPa; through the seasons, the wind speed and its amplitude first decreased and then increased; they were minimum in summer, followed by in autumn, and maximum in winter, whereby the seasonal variation amplified with increasing height. The vertical distribution of the wind field displayed a great difference; the speed was mainly less than 10 m/s, and the wind directions below the middle and lower levels shifted; western winds of 10-25 m/s dominated the region above these levels. As observed from the annual wind vertical structure, in the lower level, mainly about 5 m/s southern wind turned to the west with less than 10 m/s at 2 km height; 15 m/s western wind was developed at 5 km height; its speed continued to increase and reached 25 m/s at 10 km height; when turning north from 15 km height , it gradually decreases to a level closer to that of the lower wind field until about 20 km. |
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| Keywords: | Huaihe River valley wind profile radar vertical structure of wind field characteristic analysis |
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