乐都地区冬季低空风场分析

Low Level Wind Field Analysis in Ledu Area

根据2007年1月6～11日在青海乐都高店焦化厂地区的大气边界层探测试验得到的资料,分析了该地区的低空风场随高度的垂直分布特征以及随时间的演变特征。结果表明:青海乐都地区冬季风向频率随高度的变化基本保持稳定,主导风向为偏西风,在地面主导风向频率为SW,在10～50 m最多风向频率和次多风向频率相同,分别为NW和WSW,50 m的最多风向频率为NW,100 m的主导风向频率是WNW,NW,150 m往上除了200 m的主导风向为W以外其他的都为WNW。从试验期间平均结果看,低空风速随高度和时间的变化规律比较复杂,平均而言,从地面到100 m风速随高度增加比较快,而100 m后随高度变化较小。

According to the January 6,2007 to the 11 th in Qinghai music stores are high coking plant the atmospheric boundal： layer tests of the information, analysis of the region＇s low - level wind field with height of the vertical distribution and the time evolution. Analysis of the re- suits showed ： Ledu of Qinghai winter wind with a high degree of frequency changes basically remained stable, dominant westerly wind direc- tion, wind direction on the ground led frequency SW 10 meters to 50 meters between the frequency and wind up on the same frequency over the wind direction, respectively NW and NE. 50 -meter wind up frequency NW, the dominant 100 -meter wind frequency Lamont, NW, Apart from the 150 meters up to 200 meters for the dominant wind direction other than the W for Lamont. From the test results on the average, low- altitude wind speed with height and time changes are more complicated. On average, from the ground to 100 meters with a height of the wind speed increased fairly fast, and after 1013 meters with a height of the smaller changes.