关键词：北京 研究 大气 NOX
北京市夏季低层大气NOx、O3垂直分布观测研究
刘 烽1,2 陈 辉2 Liu Yangang3
（1 青岛海洋大学海洋气象系，青岛，266003)
(2 中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京,100029)
(3 Brookhaven National Laboratory, Environmental Sciences Department, Upton, NY 11973-5000,USA)
摘 要 根据2000年夏季在北京325m铁塔上的一次梯度观测实验，给出8m，120m和280m三层上的NO、NO2、O3浓度的观测结果。对NO，NO2、O3小时平均浓度的日变化和垂直分布规律进行了分析，结果发现:（1）各高度上的NO，NO2、O3浓度均有明显的日变化特征，阴雨天的日变化更加复杂；（2）O3在晴朗白天有单、双及三峰型分布；（3）相对于120m和280m，近地面8m处的NO浓度最高，而O3浓度最低；（4）NO2、O3日平均浓度日变化振幅120m处最大；（5）中午前后NO，NO2、O3浓度均在120m最高。
关键词 臭氧；氮氧化物；城市大气边界层；北京市
中图法分类号 P41 文章编号 1001-1862(2002)02-179-07
Study on the Vertical Observations of NOx and O3
in the Low Level of ABL in Beijing Area
Liu Feng1，2 Chen Hui2 Liu Yangang3
(1 Department of Marine Meteorology, Ocean University of Qingdao, Qingdao 266003, China)
(2 LAPC, The Institute of Atmospheric Physics, CAS, Beijing 100029, China)
(3 Brookhaven National Laboratory, Environmental Sciences Department,
Upton, NY 11973-5000,USA)
Abstract A series of experiments on pollutant species were carried out during the summer of year 2000 on 235m meteorological tower in Beijing. The observations of NO、NO2、O3at the three levels of 8m, 120m and 280m are analyzed. The results show that firstly, daily variations of concentrations of NO、NO2、O3 at each level are significant, which are more complicated in cloudy and rainy days. Secondly three typical distribution patterns of ozone concentration exist in daytime. Thirdly, the concentration of NO at surface layer is the highest, compared with those at 120m and 280m, while there exist reverse results for ozone vertical concentration distribution. Fourthly, 120m is the most significant level in the sense of the daily varying amplitudes of NO2and O3at three levels. Finally, the heaviest pollution of NO、NO2、O3in the daytime might occur at the height of 120m compared with the results at other two heights.
Key words Ozone; nitrogen oxides; urban ABL; Beijing
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