气候变化领域集成服务门户(CCPortal): A multi-scale model analysis of ozone formation in the Bangkok Metropolitan Region, Thailand

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DOI	10.1016/j.atmosenv.2020.117433
	A multi-scale model analysis of ozone formation in the Bangkok Metropolitan Region, Thailand
	Uttamang P.; Campbell P.C.; Aneja V.P.; Hanna A.F.
发表日期	2020
ISSN	1352-2310
卷号	229
英文摘要	Over the last three decades, Thailand's rapid industrialization and urbanization have led to an impact on urban air quality. A majority of the country's development has occurred within and around Bangkok (BKK), the capital city of Thailand, and the Bangkok Metropolitan Region (BMR). Since 1995, the BMR has experienced air quality degradation, in particular, enhanced ozone (O3) due to a combination of the local increase in emissions from accelerated growth in automotive and industrial activities, local meteorology including strong solar radiation, high temperature and high humidity, and potential long-range effects of regional transport from China. To investigate the O3 formation in the BMR due to the effects of long-range transport and local meteorology feedbacks, we perform a multi-scale simulation with the Weather Research and Forecasting model with Chemistry (WRF-Chem) during the O3 season (January to March), 2010; since O3 mixing ratio exceedances in the BMR occur primarily during this period The results in this study indicate the significance of China's emission reductions on the regional-scale and the local-scale pollution, as far as the BMR region and southern Thailand. Applying China's oxide of nitrogen (NOx)-only emission controls, generally, enhance the domain-wide monthly-average peroxyacetyl nitrate (PAN) and O3 in the regional scale, in the order of ~1–7% and ~1–5%, respectively, while those in the local scale are ~ 0.2–6% and ~0.1–5% compared with the baseline simulation. However, the increases in PAN and O3 are mitigated by 40% China's Volatile Organic Compound (VOC) reduction along with 40% NOx reduction. The results, supported by an indicator analysis, suggest that northern and eastern China, northern and central Thailand and the BMR, are likely VOC-limited during the O3 season. Since the BMR is VOC-limited regime, controlling anthropogenic VOC emissions will show more benefit to control O3 than controlling NOx-only emissions. Other factors that influence on O3 levels in the BMR are biogenic VOC emissions from the Tenasserim range and land- and sea-breeze circulations that recirculate and disperse pollutants along the coastal areas. © 2020 Elsevier Ltd
英文关键词	Long-range transport; NOx-limited; Surface ozone; VOC-Limited; WRF-Chem
语种	英语
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129530
作者单位	Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, United States; Cooperative Institute for Satellite Earth System Studies (CISESS), George Mason University, NOAA Air Resources Laboratory Affiliate, College ParkMD 20740, United States; Institute for the Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC 27517, United States
推荐引用方式 GB/T 7714	Uttamang P.,Campbell P.C.,Aneja V.P.,et al. A multi-scale model analysis of ozone formation in the Bangkok Metropolitan Region, Thailand[J],2020,229.
APA	Uttamang P.,Campbell P.C.,Aneja V.P.,&Hanna A.F..(2020).A multi-scale model analysis of ozone formation in the Bangkok Metropolitan Region, Thailand.Atmospheric Environment,229.
MLA	Uttamang P.,et al."A multi-scale model analysis of ozone formation in the Bangkok Metropolitan Region, Thailand".Atmospheric Environment 229(2020).