APP下载

伊犁特克斯县30年风向资料统计分析

2012-06-04张琦

城市建设理论研究 2012年13期

摘要:利用特克斯县气象站1971-2000年30a的地面观测资料,分析得出该地区全年主导风向以及风向随季节变化的一系列特征。风向资料以16个方位为标准,结果表明:当地全年主导风向为SW,次主导风向为E,而最小风频为NNW,30a内出现总概率分别为143.90%、124.83%、7.63%,并且各风向的分布具有明显的季节变化,具体表现为:冬季(12-2月)以SW为主导风向,出现频率较其它季节明显偏高;夏季(6-8月)以E为主导风向,另外该季出现静风日数较其他月份明显偏多;春秋两季,各风向出现频率分布则较为平均。

关键词:特克斯;风向;特征分析

Abstract: using Tex county of 1971 meteorological stations of 30 a ground observation data, analysis the area leading the direction of the wind and the wind throughout the year with the season variety of a series of features. The wind data to 16 position for the standard, and the results show that: the local annual leading the wind for SW, time for E leading wind direction, wind and minimum frequency for NNW, 30 appeared in a total probability of 143.90%, 124.83% and 7.63% respectively, and the direction of distribution has the obvious seasonal change, the specific performance: winter (12-February) SW as leading to the direction of the wind, frequency obviously higher than other seasons; The summer (6-8 months) to E for leading the direction of the wind, in addition the season appear no more other days in partial more obvious; During the spring and autumn, the wind frequency distribution is more in average.

Keywords: Tex; The wind; Analysis of characteristics of the

中图分类号: P412.16文献标识码:A 文章编号:

1 引言

在现代城市建设规划过程中,人们考虑最多的是水源、交通、地形等因素给设计带来的影响,却往往容易忽略风这个重要参数在建筑物布局各环节中所起的作用。研究表明,风虽然对大气污染物具有稀释能力,但其更兼有输送和扩散作用,在这其中,风向决定了污染物的具体行进路线。风向即风的来向,通常我们用16方位法来表示,最多风向指规定时间段内出现频率最多的风向。[1.2]一般来说,为了尽可能地减少工厂排出的烟尘、废气对居民区的污染,在城市规划时应遵循“主导风向”的布局原则,即在常年盛行一种主导风向的地区进行城市规划时,应将向大气排放有害物质的工业、企业布局在主导风向的下风向,城市中的居民区、文化区、游览区应布局在上风向。

而在风向随季节变化的地区进行城市规划时,可遵循“最小风频”原则进行布局。……

登录APP查看全文