%0 Journal Article
%T Process analysis of O3 formation in summer at Beijing<br>北京市区夏季O3生成过程分析
%A XU Jun
%A ZHANG Yuanhang
%A <br>徐峻
%A 张远航
%J 环境科学学报
%D 2006
%I 
%X A three dimension air quality model CMAQ-MADRID was employed to simulate O_ 3 pollution in summer at Beijing. IPR and IRR, modules of process analysis in CMAQ, were used to explore the O_ 3 building process in urban area with focus on radical and NO_x cycles. In urban area, strong oxidation capacity was spread to full boundary layer, and O_ 3 formation was in VOC-limited regime. Obvious discrepancy of O_ 3 building process existed between surface layer and upper level of boundary layer, with high O_ 3 production rate at altitude of 200~800 m, and the high O_ 3 concentration at surface layer mainly came from O_ 3 vertical transportation of upper air. Since NO_x emission was concentrated at surface layer, new NO input was quite high and NO_x chain length was only 1.3, resulting in a low O_ 3 yield. At upper level of boundary layer, where the oxidation capacity was strong and new NO input was low, NO_x chain length reached 5.0, thus O_ 3 yield there was rather high.
%K O3
%K urban area
%K process analysis
%K air quality model<br>O3
%K 市区
%K 过程分析
%K 空气质量模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=905AD0D40B4636F0&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=B31275AF3241DB2D&sid=1B519D9EB22393DB&eid=724110922AF7E025&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=6&reference_num=26