globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2014.11.018
Scopus记录号: 2-s2.0-84912096396
论文题名:
Emission reductions and urban ozone responses under more stringent US standards
作者: Downey N; , Emery C; , Jung J; , Sakulyanontvittaya T; , Hebert L; , Blewitt D; , Yarwood G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 101
起始页码: 209
结束页码: 216
语种: 英语
英文关键词: High order decoupled direct method ; Ozone national ambient air quality standard ; Ozone response to emission controls
Scopus关键词: Air quality ; Emission control ; Nitrogen oxides ; Ozone ; Quality control ; Urban growth ; Volatile organic compounds ; Anthropogenic emissions ; Decoupled direct methods ; Emissions reduction ; Epidemiological models ; Frequency distributions ; National ambient air quality standards ; Ozone response ; Volatile organic compound (VOC) ; Air quality standards ; nitrogen oxide ; ozone ; volatile organic compound ; air quality ; ambient air ; anthropogenic effect ; emission ; emission control ; epidemiology ; health impact ; nitrogen oxides ; ozone depletion ; photochemistry ; urban site ; volatile organic compound ; air pollution control ; air quality standard ; ambient air ; Article ; simulation ; suburban area ; United States ; urban area ; California ; Los Angeles [California] ; Pennsylvania ; Philadelphia ; Sacramento ; Saint Louis [Saint Louis (RGA)] ; Saint Louis [Senegal] ; Senegal ; United States
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: We use a photochemical grid model instrumented with the high-order Decoupled Direct Method (HDDM) to evaluate the response of ozone (O3) to reductions in US-wide anthropogenic emissions, and to estimate emission reductions necessary to meet more stringent National Ambient Air Quality Standards (NAAQS) for O3. We simulate hourly O3 response to nationwide reductions in nitrogen oxides (NOx) and volatile organic compound (VOC) emissions throughout 2006 and compare O3 responses in 4 US cities: Los Angeles, Sacramento, St. Louis, and Philadelphia. We compare O3 responses between NOx-rich, O3-inhibited urban core sites and NOx-sensitive, higher O3 suburban sites and analyze projected O3 frequency distributions, which can be used to drive health effect models. We find that 2006 anthropogenic NOx and VOC emissions must be reduced by 60-70% to reach annual 4th highest (H4) maximum daily 8-h(MDA8) O3 of 75ppb (the current US standard) in Sacramento, St. Louis, and Philadelphia, and by 80-85% to reach an H4 MDA8 of 60ppb. Los Angeles requires larger emissions reductions and achieves an H4 MDA8 of 75ppb with 92% reductions and 60ppb with 97% reductions. As emissions are reduced, hourly and MDA8 frequency distributions tend toward mid-level background distributions. Mid-level O3 exposure is an important driver of O3 health impacts calculated by epidemiological models. A significant fraction (at least 48%) of summertime integrated MDA8 O3 at all sites remains after complete elimination of US anthropogenic NOx and VOC emissions, implying that mid-level O3 exposure due to background will become more important as domestic precursor emissions are controlled. © 2014 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82137
Appears in Collections:气候变化事实与影响

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作者单位: Earth System Sciences, LLC, P.O. Box 7565, Houston, TX, United States; ENVIRON International Corporation, 775 San Marin Dr., Novato, CA, United States

Recommended Citation:
Downey N,, Emery C,, Jung J,et al. Emission reductions and urban ozone responses under more stringent US standards[J]. Atmospheric Environment,2015-01-01,101
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