doi:  10.3878/j.issn.1006-9585.2018.18010
淮河流域风场垂直结构特征分析

Analysis of the Vertical Structure of Wind Fields in Huaihe River Valley
摘要点击 206  全文点击 188  投稿时间:2018-01-10  
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基金:  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
中文关键词:  淮河流域  风廓线雷达  风场垂直结构  特征分析
英文关键词:  Huaihe River valley  wind profile radar  vertical structure of wind field  characteristic analysis
                    
作者中文名作者英文名单位
毛文茜MAO Wenqian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 730000
冷文楠LENG Wennan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 730000
樊旭FAN Xu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 730000
肖霞XIAO Xia中国科学院大气物理研究所,北京 100029
郭燕玲GUO Yanling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 730000
赵艳茹ZHAO Yanru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 730000
张文煜ZHANGa Wenyu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 730000
引用:毛文茜,冷文楠,樊旭,肖霞,郭燕玲,赵艳茹,张文煜.2019.淮河流域风场垂直结构特征分析[J].气候与环境研究,24(3):333-340,doi:10.3878/j.issn.1006-9585.2018.18010.
Citation:MAO Wenqian,LENG Wennan,FAN Xu,XIAO Xia,GUO Yanling,ZHAO Yanru,ZHANGa Wenyu.2019.Analysis of the Vertical Structure of Wind Fields in Huaihe River Valley[J].Climatic and Environmental Research(in Chinese),24(3):333-340,doi:10.3878/j.issn.1006-9585.2018.18010.
中文摘要:
      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。
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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