对1988至1992年兰州市环境监测站自动监测系统监测到的近地面逐时风和空气污染浓度资料以及对应时段的兰州市低空风资料乃至城、郊近40年的地面风资料做了深入的分析,并将城区与郊区对照点(榆中站)进行对比研究,揭示了风向频率变化特征和风速日变化、年变化、年际变化以及风随高度的变化规律。同时分析了对应时段空气污染的分布状况及其与风速的相关关系,为研究兰州市边界层大气动力稳定度的时空变化规律和开展空气污染预报提供了一定的依据。

The ground wind speed and air pollutant concentration data monitored by Automatic Monitoring System of Lanzhou environment monitoring station during the period from 1988 to 1992,low level wind data in Lanzhou city and the ground wind data of urban and suburb distric of Lanzhou in latest 40 years were analyzed.We also contrast the urban district with the suburb monitoring point(Yuzhong station).The results reveal the regularities of wind direction distribution and the daily,annual and interannual variations of wind speed as well as the characteristics of wind changing with height.At the same time,the distribution of air pollutant conecntration and its correlation with wind speed in the parallelism period have been analysed.The results will provide the bases for investigating time space changing regularity of stability of boundary layer and develope air pollution forecast in Lanzhou city.