DOI: 10.1002/2016GL069885
论文题名: Impact of the 2008 Global Recession on air quality over the United States: Implications for surface ozone levels from changes in NOx emissions
作者: Tong D. ; Pan L. ; Chen W. ; Lamsal L. ; Lee P. ; Tang Y. ; Kim H. ; Kondragunta S. ; Stajner I.
刊名: Geophysical Research Letters
ISSN: 0094-8672
EISSN: 1944-8403
出版年: 2016
卷: 43, 期: 17 起始页码: 9280
结束页码: 9288
语种: 英语
英文关键词: air quality
; NO2
; ozone
; recession
Scopus关键词: Air pollution
; Air quality
; Emission control
; Gas emissions
; Nitrogen oxides
; Ozone
; Air quality systems
; Economic Recession
; Emission projections
; Emission reduction
; Ground observations
; Ozone monitoring instruments
; Recession
; Regional chemical transport model
; Economic and social effects
; air quality
; atmospheric pollution
; Aura (satellite)
; economic instability
; emission inventory
; financial crisis
; nitrogen oxides
; ozone
; pollutant transport
; pollution monitoring
; trend analysis
; Pacific Ocean
; Pacific Ocean (West)
; Rocky Mountains
; United States
英文摘要: Satellite and ground observations detected large variability in nitrogen oxides (NOx) during the 2008 economic recession, but the impact of the recession on air quality has not been quantified. This study combines observed NOx trends and a regional chemical transport model to quantify the impact of the recession on surface ozone (O3) levels over the continental United States. The impact is quantified by simulating O3 concentrations under two emission scenarios: business-as-usual (BAU) and recession. In the BAU case, the emission projection from the Cross-State Air Pollution Rule is used to estimate the “would-be” NOx emission level in 2011. In the recession case, the actual NO2 trends observed from Air Quality System ground monitors and the Ozone Monitoring Instrument on the Aura satellite are used to obtain “realistic” changes in NOx emissions. The model prediction with the recession effect agrees better with ground O3 observations over time and space than the prediction with the BAU emission. The results show that the recession caused a 1–2 ppbv decrease in surface O3 concentration over the eastern United States, a slight increase (0.5–1 ppbv) over the Rocky Mountain region, and mixed changes in the Pacific West. The gain in air quality benefits during the recession, however, could be quickly offset by the much slower emission reduction rate during the post-recession period. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84985964618&doi=10.1002%2f2016GL069885&partnerID=40&md5=26e0328b9338362cb9850052bd8839d3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9635
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Cooperative Institute for Climate and Satellites, University of Maryland, College Park, MD, United States
Recommended Citation:
Tong D.,Pan L.,Chen W.,et al. Impact of the 2008 Global Recession on air quality over the United States: Implications for surface ozone levels from changes in NOx emissions[J]. Geophysical Research Letters,2016-01-01,43(17).