Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-10919-2017 |
Long-term O-3-precursor relationships in Hong Kong: field observation and model simulation | |
Wang, Yu1; Wang, Hao1; Guo, Hai1; Lyu, Xiaopu1; Cheng, Hairong2; Ling, Zhenhao3; Louie, Peter K. K.4; Simpson, Isobel J.5; Meinardi, Simone5; Blake, Donald R.5 | |
2017-09-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Over the past 10 years (2005-2014), ground-level O-3 in Hong Kong has consistently increased in all seasons except winter, despite the yearly reduction of its precursors, i.e. nitrogen oxides (NOx = NO + NO2), total volatile organic compounds (TVOCs), and carbon monoxide (CO). To explain the contradictory phenomena, an observation-based box model (OBM) coupled with CB05 mechanism was applied in order to understand the influence of both locally produced O-3 and regional transport. The simulation of locally produced O-3 showed an increasing trend in spring, a decreasing trend in autumn, and no changes in summer and winter. The O-3 increase in spring was caused by the net effect of more rapid decrease in NO titration and unchanged TVOC reactivity despite decreased TVOC mixing ratios, while the decreased local O-3 formation in autumn was mainly due to the reduction of aromatic VOC mixing ratios and the TVOC reactivity and much slower decrease in NO titration. However, the decreased in situ O-3 formation in autumn was overridden by the regional contribution, resulting in elevated O-3 observations. Furthermore, the OBM-derived relative incremental reactivity indicated that the O-3 formation was VOC-limited in all seasons, and that the long-term O-3 formation was more sensitive to VOCs and less to NOx and CO in the past 10 years. In addition, the OBM results found that the contributions of aromatics to O-3 formation decreased in all seasons of these years, particularly in autumn, probably due to the effective control of solvent-related sources. In contrast, the contributions of alkenes increased, suggesting a continuing need to reduce traffic emissions. The findings provide updated information on photochemical pollution and its impact in Hong Kong. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410778000001 |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; PEARL RIVER DELTA ; SURFACE OZONE CONCENTRATIONS ; MASTER CHEMICAL MECHANISM ; MCM V3 PART ; TROPOSPHERIC OZONE ; SOUTHERN CHINA ; COMPOUNDS VOCS ; AIR-POLLUTION ; NONMETHANE HYDROCARBONS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/26147 |
专题 | 地球科学 |
作者单位 | 1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Air Qual Studies, Hong Kong, Hong Kong, Peoples R China; 2.Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Engn, Wuhan 430079, Hubei, Peoples R China; 3.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China; 4.Hong Kong Environm Protect Dept, Air Grp, Hong Kong, Hong Kong, Peoples R China; 5.Univ Calif Irvine, Dept Chem, Irvine, CA 92717 USA |
推荐引用方式 GB/T 7714 | Wang, Yu,Wang, Hao,Guo, Hai,et al. Long-term O-3-precursor relationships in Hong Kong: field observation and model simulation[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(18). |
APA | Wang, Yu.,Wang, Hao.,Guo, Hai.,Lyu, Xiaopu.,Cheng, Hairong.,...&Blake, Donald R..(2017).Long-term O-3-precursor relationships in Hong Kong: field observation and model simulation.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(18). |
MLA | Wang, Yu,et al."Long-term O-3-precursor relationships in Hong Kong: field observation and model simulation".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.18(2017). |
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