| 北京地区低空风、温度层结对大气污染物垂直分布影响初探 |
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| 引用本文： | 张蔷,赵淑艳,金永利.北京地区低空风、温度层结对大气污染物垂直分布影响初探[J].应用气象学报,2002,13(Z1):153-159. |
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| 作者姓名： | 张蔷 赵淑艳 金永利 |
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| 作者单位： | 北京市气象局人工影响天气办公室,北京,100089 |
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| 基金项目： | 本项研究得到北京市自然科学基金(编号8981002)和《国家重点基础研究发展规划》项目:首都北京及周边地区大气、水、土环境污染机理与调控原理(项目编号:G1999045700)共同资助. |
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| 摘 要： | 2001年1月5～12日,2月21日～3月1日两次在北京方庄居住小区内进行了大气污染物(二氧化硫、氮氧化物)与气象要素垂直探测,历时16天.共获取了83次(一天8次)边界层垂直温、压、湿、风连续的探空资料以及不同高度(地面、100m、500m)逐时大气污染物浓度监测数据306个.该文分析了低空风日变化规律、时空分布规律、边界层气象条件对污染物垂直分布影响等等;并对1月12日、2月27日两天高浓度污染目的天气特征、温度层结和低空风以及2月25～26日出现100m浓度值高于地面现象都进行了详细分析.观测结果对于了解和研究北京地区冬季低层空气中环境化学污染物质在空中的垂直分布情况及随时间变化规律具有重要的参考价值.
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| 关 键 词： | 大气污染物 垂直分布 气象条件探测 |
| 修稿时间： | 2001年8月3日 |
A PRELIMINARY STUDY OF IMPACTS OF WIND IN LOW LEVEL AND TEMPERATURE STRATIFICATION ON VERTICAL DISTRIBUTION OF ATMOSPHERIC POLLUTANTS IN BELJING AREA |
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| Zhang Qiang,Zhao Shu Yan,Jin Yong Li.A PRELIMINARY STUDY OF IMPACTS OF WIND IN LOW LEVEL AND TEMPERATURE STRATIFICATION ON VERTICAL DISTRIBUTION OF ATMOSPHERIC POLLUTANTS IN BELJING AREA[J].Quarterly Journal of Applied Meteorology,2002,13(Z1):153-159. |
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| Authors: | Zhang Qiang Zhao Shu Yan Jin Yong Li |
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| Abstract: | Vertical measurement of atmospheric pollutants (SO 2 and NO x) and meteorological elements were conducted twice at Fangzhang Community, Beijing. The two measurement periods were from 5 to 12 January and 21 February to 1 March , 2001, lasting 16 days. The data from 83 rawinsonde observations of vertical temperature, pressure, humidity and wind in the boundary layer were acquired. Also, the hourly concentration data of atmospheric pollutants at different altitudes (surface, 100 m, 500 m) were obtained (306 in total). The impacts of daily variety, temporal and spatial distribution of low level wind and other meteorological conditions on the vertical distribution of atmospheric pollutants are analyzed. As the two typical days of high pollution, the weather conditions including temperature stratification and wind distribution at low levels on 12 January and 27 February are analyzed in detail. In addition, the possible reasons are discussed for the phenomenon that the concentration at the 100 m level was higher than that at ground on 25 and 26 February 2001. Therefore, the results of this observation are of great significance to the investigation on the vertical distribution and temporal variety of the surrounding chemical pollutants at low levels in winter in the Beijing area. |
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| Keywords: | Atmospheric contamination Vertical distribution Weather conditions and detection |
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