DOI: 10.1016/j.atmosenv.2014.10.033
Scopus记录号: 2-s2.0-84910093589
论文题名: Air pollution and early deaths in the United States. Part II: Attribution of PM2.5 exposure to emissions species, time, location and sector
作者: Dedoussi I ; C ; , Barrett S ; R ; H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 99 起始页码: 610
结束页码: 617
语种: 英语
英文关键词: Adjoint sensitivity analysis
; Early deaths
; Particulate matter
Scopus关键词: Adjoint sensitivity analysis
; Early deaths
; Particulate Matter
; ammonia
; air quality
; atmospheric pollution
; electricity generation
; epidemiology
; industrial emission
; mortality
; particulate matter
; pollution exposure
; road transport
; sensitivity analysis
; air pollution
; air quality
; Article
; combustion
; environmental exposure
; exhaust gas
; health hazard
; industry
; particulate matter
; population exposure
; power supply
; premature mortality
; residential area
; sensitivity analysis
; species differentiation
; traffic
; 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: Combustion emissions constitute the largest source of anthropogenic emissions in the US, and lead to the degradation of air quality and human health. In Part I we computed the population fine particulate matter (PM2.5) exposure and number of early deaths caused by emissions from six major sectors: electric power generation, industry, commercial and residential activities, road transportation, marine transportation and rail transportation. In Part II we attribute exposure and early deaths to sectors, emissions species, time of emission, and location of emission. We apply a long-term adjoint sensitivity analysis and calculate the four dimensional sensitivities (time and space) of PM2.5 exposure with respect to each emissions species. Epidemiological evidence is used to relate increased population exposure to premature mortalities. This is the first regional application of the adjoint sensitivity analysis method to characterize long-term air pollution exposure. (A global scale application has been undertaken related to intercontinental pollution.) We find that for the electric power generation sector 75% of the attributable PM2.5 exposure is due to SO2 emissions, and 80% of the annual impacts are attributed to emissions from April to September. In the road transportation sector, 29% of PM2.5 exposure is due to NOx emissions and 33% is from ammonia (NH3), which is a result of emissions after-treatment technologies. We estimate that the benefit of reducing NH3 emissions from road transportation is ~20 times that of NOx per unit mass. 75% of the road transportation ammonia impacts occur during the months October to March. We publicly release the sensitivity matrices computed, noting their potential use as a rapid air quality policy assessment tool. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80529
Appears in Collections: 气候变化事实与影响
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作者单位: Laboratory for Aviation and the Environment, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, United States
Recommended Citation:
Dedoussi I,C,, Barrett S,et al. Air pollution and early deaths in the United States. Part II: Attribution of PM2.5 exposure to emissions species, time, location and sector[J]. Atmospheric Environment,2014-01-01,99