%0 Journal Article
%T Studies on gradient observation of O3 and NOx in an atmospheric photochemical pollution<br>一次光化学污染过程中O3和NOx的垂直梯度观测研究
%A Wang Weifeng
%A Zhu Bin
%A Wang Yuesi
%A An Junlin
%A Yu Wenpeng
%A <br>汪伟峰
%A 朱彬
%A 王跃思
%A 安俊琳
%A 于文鹏
%J 环境工程学报
%D 2010
%I 
%X In order to study atmospheric pollution concentration changes during the 2008 Olympic Games in Beijing, atmospheric pollutants( NO_2 and O_3) at 3 altitude levels of Beijing meteorological tower were observed, and their variations were analyzed. The results indicate that by the strict measures for improving the air quality before Olympic Games, NO_2 concentration reduced by 45. 3% and decreased gradually with the increasing height; both the maximum of O_3 concentrations and the daily average O_3 concentrations decreased. The appear-ance time of O_3 maximum concentration was brought forward about 1～2 h than 10 years ago, and kept stably a-round 4 h. The O_3 peak concentrations were mainly influenced by NO_2. The O_3 concentration peak appeared a-head of schedule,which showed that Beijing atmospheric oxidation efficiency continued to increase. According to the analysis meteorological data and atmospheric pollution monitoring data the meteorological factors for photo-chemical pollution event were found as follows: weak-rield control of high-voltage, stable atmospheric stratifica-tion, weaker wind force ( the wind velocity was less than 2 m/s) , and accompanied by a continuous high temper-ature, strong radiation and low humidity.
%K Beijing Olympic Games
%K ozone
%K nitrogen oxides
%K gradient observation<br>北京奥运会
%K 臭氧
%K 氮氧化物
%K 梯度观测
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=AB6AAC0FFC5D71E1218E08883B086751&yid=140ECF96957D60B2&vid=E158A972A605785F&iid=0B39A22176CE99FB&sid=34D9E20AD82A0D72&eid=1FF3CD54EFC256A1&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=18