期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2004
卷号：101
期号：17
页码：6346-6350
DOI：10.1073/pnas.0401484101
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Simulations with a regional chemical transport model show that anthropogenic emissions of volatile organic compounds and nitrogen oxides (NOx = NO + NO2) lead to a dramatic diurnal variation of surface ozone (O3) in Houston, Texas. During the daytime, photochemical oxidation of volatile organic compounds catalyzed by NOx results in episodes of elevated ambient O3 levels significantly exceeding the National Ambient Air Quality Standard. The O3 production rate in Houston is significantly higher than those found in other cities over the United States. At night, a surface NOx maximum occurs because of continuous NO emission from industrial sources, and, consequently, an extensive urban-scale "hole" of surface ozone (<10 parts per billion by volume in the entire Houston area) is formed as a result of O3 removal by NO. The results suggest that consideration of regulatory control of O3 precursor emissions from the industrial sources is essential to formulate ozone abatement strategies in this region.
