Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.06.003 |
Meteorological and chemical impacts on ozone formation: A case study in Hangzhou, China | |
Li, Kangwei1,3; Chen, Linghong1; Ying, Fang2; White, Stephen J.3; Jang, Carey4; Wu, Xuecheng1; Gao, Xiang1; Hong, Shengmao2; Shen, Jiandong2; Azzi, Merched3; Cen, Kefa1 | |
2017-11-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 196 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Australia; USA |
英文摘要 | Regional ozone pollution has become one of the most challenging problems in China, especially in the more economically developed and densely populated regions like Hangzhou. In this study, measurements of O-3, CO, NO and non-methane hydrocarbons (NMHCs), together with meteorological data, were obtained for the period July 1, 2013 August 15, 2013 at three sites in Hangzhou. These sites included an urban site (Zhaohui "ZH"), a suburban site (Xiasha "XS") and a rural site (Qiandaohu "QDH"). During the observation period, both ZH and XS had a higher ozone level than QDH, with exceeding rates of 41.3% and 47.8%, respectively. Elevated O-3 levels in QDH were found at night, which could be explained by less prominent NO titration effect in rural area. Detailed statistical analysis of meteorological and chemical impacts on ozone formation was carried out for ZH, and higher ozone concentration was observed when the wind direction was from the east. This is possibly due to emissions of VOCs from XS, a typical chemical industrial park located in 30 km upwind area of ZH. A comprehensive comparison between three ozone episode periods and one non-episode period were made in ZH. It was concluded that elevated concentrations of precursors and temperatures, low relative humidity and wind speed and easterly-dominated wind direction contribute to urban ozone episodes in Hangzhou. VOCs reactivity analysis indicated that reactive alkenes like isoprene and isobutene contributed most to ozone formation. Three methods were applied to evaluate O-3-VOCs-NOx sensitivity in ZH: VOCs/NOx ratio method, Smog Production Model (SPM) and Relative Incremental Reactivity (RIR). The results show that summer ozone in urban Hangzhou mostly presents VOCs-limited and transition region alternately. Our study implies that the increasing automobiles and VOCs emissions from upwind area could result in ozone pollution in urban Hangzhou, and synergistic reduction of VOCs and NOx will be more effective. |
英文关键词 | Urban ozone Meteorological effect SPM O-3-VOCs-NOx RIR |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409290200005 |
WOS关键词 | YANGTZE-RIVER DELTA ; SURFACE OZONE ; AIR-QUALITY ; NONMETHANE HYDROCARBONS ; PRECURSOR RELATIONSHIPS ; FLUE-GAS ; POLLUTION ; NOX ; URBAN ; CITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38045 |
专题 | 地球科学 |
作者单位 | 1.Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China; 2.Hangzhou Environm Monitoring Ctr Stn, Hangzhou 310007, Zhejiang, Peoples R China; 3.CSIRO Energy, POB 52, N Ryde, NSW 1670, Australia; 4.US EPA, Off Air Qual Planning & Stand, Res Triangle Pk, NC 27711 USA |
推荐引用方式 GB/T 7714 | Li, Kangwei,Chen, Linghong,Ying, Fang,et al. Meteorological and chemical impacts on ozone formation: A case study in Hangzhou, China[J]. ATMOSPHERIC RESEARCH,2017,196. |
APA | Li, Kangwei.,Chen, Linghong.,Ying, Fang.,White, Stephen J..,Jang, Carey.,...&Cen, Kefa.(2017).Meteorological and chemical impacts on ozone formation: A case study in Hangzhou, China.ATMOSPHERIC RESEARCH,196. |
MLA | Li, Kangwei,et al."Meteorological and chemical impacts on ozone formation: A case study in Hangzhou, China".ATMOSPHERIC RESEARCH 196(2017). |
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