Transport Pathways of Pollutants from Outside in Atmosphere Boundary Layer
Transport Pathways of Pollutants from Outside in Atmosphere Boundary Layer
复制标题
DOI：
--
复制
发表时间：
2004
影响因子：
--
通讯作者：
Yang Xinxing
中科院分区：
文献类型：
--
作者：
Yang Xinxing
通过分析北京、天津、河北三地气候站的历史资料发现，在稳定的天气条件下，外来污染物的输送路径分为西南流、东南流和东流，输送辐合（TC）风带的统计数据显示，西南风带TC占所有带的45%，东南风带占36%，东风带占19%。输送路径是指时空尺度上的稳定风带，而欧拉风场在区域尺度和局地尺度上呈分离状态出现，具有高频特征。在城市尺度上，可将流型分为东风、西南风和东南风三种类型，具有继承性和连续性的特点。在天气系统配置上，可将流型划分为陆地高压南风中的近东风TP系统，海上高压后部的东南风TP系统，黄河弯曲倒槽前的西南风TP系统，东北低槽前南风TP系统等，这三个风带区均位于华北平原三大排放源区。
By analyzing the historic data of Beijing, Tianjin and Hebei climatology stations, it was found that under stable weather conditions, the transport pathways of outside pollutants were divided into the southwest current, southeast current and east current, and the statistic data of the wind belts of the transport convergence (TC) showed that the TC of the southwest wind belt took 45 percent of all belts, the rate of the southeast wind belt was 36 percent, and that of the east wind belt 19 percent. The transport pathways (TPs) referred to the stable wind belts in the space and time scale, and the Euler wind field which appeared in secession in the territorial scales and local scales, being characterized by high frequency. On the intercity scales the current types could be divided into the TPs of the east wind, southwest wind and southeast wind, which were characterized by succession and continuance. On the dispose of the weather system, the current types could be divided into the TP system of the near east wind in the south wind of the territorial high pressure, the TP system of the southeast wind on the back of the high pressure on the sea, the TP system of the southwest wind in front of the inverse trough of the Great Bend of the Yellow River, and the TP system of the south wind in front of the low trough of the northeast, etc. All the three wind belt areas were right situated in the regions of three major emission sources of the plain of North China.