DOI: 10.1002/jgrd.50659
论文题名: Importance of NO<inf>x</inf> control for peak ozone reduction in the Pearl River Delta region
作者: Li Y. ; Lau A.K.H. ; Fung J.C.H. ; Zheng J. ; Liu S.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 16 起始页码: 9428
结束页码: 9443
语种: 英语
Scopus关键词: Air quality
; Nitrogen oxides
; Reduction
; Volatile organic compounds
; Metropolitan regions
; Model sensitivity
; Ozone concentration
; Peak ozone concentration
; Pearl River delta
; Pearl River Delta region
; Regional air quality
; Volatile organic compound (VOC)
; Ozone
; air quality
; atmospheric pollution
; concentration (composition)
; diurnal variation
; metropolitan area
; nitrogen oxides
; ozone
; pollution control
; spatial variation
; volatile organic compound
; China
; Guangdong
; Zhujiang Delta
英文摘要: As major air pollutants and key precursors of several secondary air pollutants, nitrogen oxide (NOx ) emissions are regulated in many countries. However, NOx control increases ozone concentrations when the ozone formation regime is volatile organic compound (VOC) limited. Although many studies have shown that NOx regulation reduces ozone levels over the long term, it is still of concern that NOx regulation increases short-term ozone levels in metropolitan regions, where ozone formation is found to be predominantly VOC-limited. The Pearl River Delta (PRD) in China is such a region. Our modeling sensitivity study shows that while NOx reduction in the PRD region may raise the mean ozone concentration, it can also decrease peak ozone levels. Similar changes are observed in the NOx and ozone data of the PRD regional air quality monitoring network (2006-2012), lending further credence to our results. In the model, this NOx control effect is a result of the complicated spatial and diurnal variations of the ozone formation regime. In most of the PRD region, the formation regime is VOC-limited in the morning and becomes NOx -limited during peak ozone hours. Although some areas are always VOC-limited, their ozone concentrations are relatively low, and the ozone increases caused by NOx reduction generally do not cause higher ozone levels than the region's original ozone maxima. Several control scenarios are simulated to evaluate the effects of various possible control regulations. Our results show that in addition to VOC control, NOx control can be effective for reducing peak ozone concentrations in the PRD region. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63390
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Division of Environment, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, 999077, Hong Kong; Pearl River Delta Atmospheric Environmental Research Joint Laboratory, Guangzhou, China; College of Environmental Science and Engineering, South China University of Technology, Guangzhou, China; Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan
Recommended Citation:
Li Y.,Lau A.K.H.,Fung J.C.H.,et al. Importance of NO<inf>x</inf> control for peak ozone reduction in the Pearl River Delta region[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)