DOI: 10.1016/j.atmosenv.2017.08.009
Scopus记录号: 2-s2.0-85029165116
论文题名: Source contributions to United States ozone and particulate matter over five decades from 1970 to 2020
作者: Nopmongcol U ; , Alvarez Y ; , Jung J ; , Grant J ; , Kumar N ; , Yarwood G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 167 起始页码: 116
结束页码: 128
语种: 英语
英文关键词: Air quality trends
; CAMx
; Emission inventories
; Emission trends
; OSAT
; Ozone
; Particulate matter
; Photochemical modeling
; PM2.5
; PSAT
; Source apportionment
Scopus关键词: Air quality
; Mobile power plants
; Nitrogen oxides
; Ozone
; Particles (particulate matter)
; Quality control
; Quality management
; Roads and streets
; Air quality trends
; CAMx
; Emission inventories
; Emission trends
; OSAT
; Particulate Matter
; Photochemical modeling
; PM2.5
; PSAT
; Source apportionment
; Air pollution
; ozone
; air quality
; anthropogenic effect
; atmospheric modeling
; atmospheric pollution
; emission control
; ozone
; particulate matter
; photochemistry
; pollutant transport
; pollution control
; source apportionment
; trend analysis
; adoption
; air pollution control
; air quality
; Article
; chemical bond
; particulate matter
; priority journal
; seasonal variation
; surface property
; United States
; 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: Evaluating long-term air quality trends can demonstrate effectiveness of control strategies and guide future air quality management planning. Observations have shown that ozone (O3) and fine particulate matter (PM2.5) in the US have declined since as early as 1980 in some areas. But observation trends alone cannot separate effects of changes in local and global emissions to US air quality which are important to air quality planners. This study uses a regional model (CAMx) nested within a global model (GEOS-Chem) to characterize regional changes in O3 and PM2.5 due to the intercontinental transport and local/regional emissions representing six modeling years within five decades (1970–2020). We use the CAMx Source Apportionment Technology (OSAT/PSAT) to estimate contributions from 6 source sectors in 7 source regions plus 6 other groups for a total of 48 tagged contributions. On-road mobile sources consistently make the largest U.S. anthropogenic emissions contribution to O3 in all cities examined even though they decline substantially from 1970 to 2005 and also from 2005 to 2020. Off-road mobile source contributions increase from 1970 to 2005 and then decrease after 2005 in all of the cities. The boundary conditions, mostly from intercontinental transport, contribute more than 20 ppb to high maximum daily 8-h average (MDA8) O3 for all six years. We found that lowering NOx emissions raises O3 formation efficiency (OFE) across all emission categories which will limit potential O3 benefits of local NOx strategies in the near future. PM2.5 benefited from adoption of control devices between 1970 and 1980 and has continued to decline through 2005 and expected to decline further by 2020. Area sources such as residential, commercial and fugitive dust emissions stand out as making large contributions to PM2.5 that are not declining. Inter-regional transport is less important in 2020 than 1990 for both pollutants. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82801
Appears in Collections: 气候变化事实与影响
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作者单位: Ramboll Environ, 773 San Marin Drive, Suite 2115, Novato, CA, United States; Electric Power Research Institute, 3420 Hillview Avenue, Palo Alto, CA, United States
Recommended Citation:
Nopmongcol U,, Alvarez Y,, Jung J,et al. Source contributions to United States ozone and particulate matter over five decades from 1970 to 2020[J]. Atmospheric Environment,2017-01-01,167