Oxidant (O-3 + NO2) production processes and formation regimes in   Beijing

doi:10.1029/2009JD012714

CORC > 北京大学 > 环境科学与工程学院

	Oxidant (O-3 + NO2) production processes and formation regimes in Beijing
	Lu, Keding ; Zhang, Yuanhang ; Su, Hang ; Brauers, Theo ; Chou, Charles C. ; Hofzumahaus, Andreas ; Liu, Shaw C. ; Kita, Kazuyuki ; Kondo, Yutaka ; Shao, Min ; Wahner, Andreas ; Wang, Jialin ; Wang, Xuesong ; Zhu, Tong
刊名	journal of geophysical research atmospheres
	2010
关键词	VOLATILE ORGANIC-COMPOUNDS OBSERVATION-BASED MODEL OZONE PROCESS INSIGHTS PEARL RIVER-DELTA NITROUS-ACID HONO TROPOSPHERIC OZONE AIR-QUALITY HYDROCARBON REACTIVITY FIELD EXPERIMENTS URBAN ATMOSPHERE
DOI	10.1029/2009JD012714
英文摘要	For CareBeijing-2006, two sites were established in urban and suburban regions of Beijing in summer 2006. Observations of O-3 and its precursors together with meteorological parameters at both sites are presented. Gross ozone production rate P(O-3) and sensitivity to nitric oxides (NOx) and volatile organic compounds (VOCs) were investigated using an observation-based photochemical box model (OBM). P(O-3) varied from nearly zero to 120 and 50 ppb h(-1) for urban and suburban sites, respectively. These rates were greater than the accumulation rates of the observed oxidant (O-3 + NO2) concentrations. The O-3 episodes typically appeared under southerly wind conditions with high P(O-3), especially at the urban site. Sensitivity studies with and without measured nitrous acid (HONO) as a model constraint suggested that the estimated P(O-3) at both sites was strongly enhanced by radical production from HONO photolysis. Both NOx- and VOC-sensitive chemistries existed over time scales from hours to days at the two sites. The variation in O-3-sensitive chemistry was relatively well explained by the ratio of the average daytime total VOC reactivity (k(TVOC)) to NO, with the transition chemistry corresponding to a k(TVOC)/NO value of 2-4 s(-1) ppb(-1). Pronounced diurnal variations in the O-3 production regime were found. In the morning, conditions were always strongly VOC-limited, while in the afternoon, conditions were variable for different days and different sites. The model-calculated results were tested by measurements of H2O2, HNO3, total OH reactivity, and HOx radicals. The OBM was generally capable of correctly simulating the levels of P(O-3), although it might tend to overpredict the VOC-sensitive chemistry.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000285585200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Meteorology & Atmospheric Sciences; SCI(E); 22; ARTICLE; 115
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158488]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Lu, Keding,Zhang, Yuanhang,Su, Hang,et al. Oxidant (O-3 + NO2) production processes and formation regimes in Beijing[J]. journal of geophysical research atmospheres,2010.
APA	Lu, Keding.,Zhang, Yuanhang.,Su, Hang.,Brauers, Theo.,Chou, Charles C..,...&Zhu, Tong.(2010).Oxidant (O-3 + NO2) production processes and formation regimes in Beijing.journal of geophysical research atmospheres.
MLA	Lu, Keding,et al."Oxidant (O-3 + NO2) production processes and formation regimes in Beijing".journal of geophysical research atmospheres (2010).