风廓线雷达在高空风场分析中的应用  

Application of Wind Profile Radar in Upper Wind Analysis

作　　者：刘成[1] 车达升[1] 柯宗建[2] 

机构地区：[1]中国人民解放军91550部队15分队 [2]国家气候中心

出　　处：《沙漠与绿洲气象》2013年第2期56-60,共5页Desert and Oasis Meteorology

基　　金：国家自然科学基金项目(41005051)资助

摘　　要：利用大连风廓线雷达高时空分辨率风场观测资料,统计2011年雷达站上空各层水平及垂直风速的分布特征。通过分析发现:最大水平风速通常出现在12 km上下,受高空急流的影响,各季节高空最大水平风速出现高度不同,4 km以下高空水平风速随高度的变化各月份存在一定差异,4 km以上至最大风速层,水平风速随高度的升高而增大,最大风速层以上至雷达测量的上限水平风速随高度增加先减小后增大;高空垂直风速在夏季较为明显,秋季次之,冬春季节最小;6月是全年月均垂直风速最大的月份,在500～1 300 m高度层存在一个上升气流中心,平均风速大于0.6 m/s,2月各高度平均垂直风速全年最小。Characteristics of Horizontal and vertical wind flow at each layer were analyzed by use of wind profile radar observation data in 2011 at Dalian.It had been found that the layer of maximum horizontal wind speed was usually about 12 km.There was a significantly annual change of wind speed with height below 4km.While the wind speed increased with increasing height from 4 km to the layer of maximum wind speed. The horizontal wind speed first decreased and then increased with increasing height from 12 km to the radar measurement--supper. The average vertical wind was the biggest in summer and the smallest in winter and spring. The monthly vertical wind speed was the maximum in June and the minimum in February. There was an updraft center in 500-1 300 m level,the average vertical wind speed was greater than 0.6 m/s.

关 键 词：风廓线雷达 高空风 变化特征 

分 类 号：TN959.4[电子电信—信号与信息处理]