DOI: 10.1016/j.atmosenv.2020.117304
论文题名: An explicit study of local ozone budget and NOx-VOCs sensitivity in Shenzhen China
作者: Yu D. ; Tan Z. ; Lu K. ; Ma X. ; Li X. ; Chen S. ; Zhu B. ; Lin L. ; Li Y. ; Qiu P. ; Yang X. ; Liu Y. ; Wang H. ; He L. ; Huang X. ; Zhang Y.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 224 语种: 英语
英文关键词: Boundary layers
; Budget control
; Nitrogen oxides
; Ozone
; Ozone layer
; Pollution control
; River pollution
; Volatile organic compounds
; Local ozone budget
; Local ozone productions
; O3-NOx-VOC sensitivity
; Observation-based model
; Photochemical precursors
; Planetary boundary layers
; Primary production rate
; Temporal and spatial changes
; Air pollution
; nitrogen oxide
; ozone
; peroxy radical
; volatile organic compound
; atmospheric pollution
; boundary layer
; megacity
; nitric oxide
; nitrogen oxides
; ozone
; primary production
; spatiotemporal analysis
; volatile organic compound
; Article
; boundary layer
; China
; circadian rhythm
; concentration (parameter)
; controlled study
; measurement
; observational study
; photochemistry
; photolysis
; priority journal
; reduction (chemistry)
; solar radiation
; urban area
; China
; Guangdong
; Shenzhen
; Zhujiang Delta
学科: Local ozone budget
; O3
; O3-NOx-VOC sensitivity
; Observational-based-model
中文摘要: In China, a significant reduction in primary pollution has been observed due to the Clean Air Action since 2013, and ozone pollution has become increasingly prominent over the past years. Pearl River Delta (PRD) is one of the most successful regions concerning primary pollution control, while is suffering from severe ozone pollution during autumn. In this study, we present a field campaign in Shenzhen, a megacity in PRD, in October 2018 with measurements of ozone and photochemical precursors. These observational data are helpful to analyze the local ozone budget and its sensitivity to precursors with the help of an observation-based model (RACM2-LIM1). The observed ozone concentration was up to 121 ppbv during a photochemical episode from 1 to 8 October, when intensive ozone formation up to tens of ppbv/h was found. Ozone vertical measurement indicates the fast ozone production is happening throughout the planetary boundary layer (PBL), which is an important source of morning ozone increase resulting in ozone pollution. An explicit case study is performed to reveal the diurnal feature of instantaneous ozone production rate (P(Ox)) and accumulative P(Ox) based on the O3-NOx-VOC sensitivity, ROx radical primary production rate (P (ROx)), and LN/Q for three cases including ozone pollution and attainment periods. Results show that nitrogen oxides (NOx = NO + NO2) reduction have positive and negative impact on local ozone production from one pollution episode to the other, which indicates the complexity of O3-precursors sensitivity and difficulty to control ozone pollution in Shenzhen. Finally, comparison among measurements in other campaigns provides additional evidence on local ozone production sensitivity on NOx and anthropogenic volatile organic compounds (AVOCs) with respect to a temporal and spatial change. The NOx reduction in Shenzhen has led to higher ozone production from 2015 to 2018 given the nearly constant VOC. However, the ozone mitigation would be benefit from further NOx reduction in the conditions of 2018. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160937
Appears in Collections: 气候变化与战略
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作者单位: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, 52428, Germany; Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China; Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University, Beijing, 100871, China; Shenzhen Key Laboratory of Environmental Simulation and Pollution Control, PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, 518057, China; CAS Center for Excellence in Regional Atmospheric Environment, Chinese Academy of Science, Xiamen, 361000, China
Recommended Citation:
Yu D.,Tan Z.,Lu K.,et al. An explicit study of local ozone budget and NOx-VOCs sensitivity in Shenzhen China[J]. Atmospheric Environment,2020-01-01,224