DOI: 10.1016/j.atmosenv.2015.04.022
Scopus记录号: 2-s2.0-84927604220
论文题名: Estimation of foreign versus domestic contributions to Taiwan's air pollution
作者: Chen J ; -P ; , Yang C ; -E ; , Tsai I ; -C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 112 起始页码: 9
结束页码: 19
语种: 英语
英文关键词: Air pollution
; Domestic contribution
; Foreign contribution
; Long-term trend
; Taiwan
Scopus关键词: Nitrogen oxides
; Pollution
; Storms
; Sulfur dioxide
; Titration
; Background concentration
; Domestic contribution
; Foreign contribution
; Interannual variation
; Long-term trend
; Meteorological condition
; Relative contribution
; Taiwan
; Air pollution
; carbon monoxide
; nitrogen dioxide
; nitrogen oxide
; ozone
; sulfur dioxide
; annual variation
; atmospheric pollution
; concentration (composition)
; dust storm
; meteorological hazard
; meteorology
; observational method
; ozone
; particulate matter
; pollutant
; air pollutant
; air pollution
; air pollution control
; analytic method
; Article
; domestic air pollutant
; foreign air pollutant
; meteorology
; nitrogen cycle
; observational study
; particulate matter
; priority journal
; Taiwan
; titrimetry
; Taiwan
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: Based on the analysis of observational data obtained over a period of 17 years, this study developed a novel approach estimating long-term changes in the relative contributions of domestic and foreign sources to air pollution levels over the island of Taiwan. The contribution from foreign sources was calculated using data measured at selected coastal monitoring stations under specific meteorological conditions. The domestic contribution was derived by subtracting the foreign contribution from the overall concentration, which was calculated with island-wide monitoring station data averaged using Thiessen polygon area weighting. The trends of mean CO, NO, NO2 and SO2 concentrations in Taiwan were-2.1%,-3.3%,-1.4% and 0% yr-1; while the background concentrations varied by-1.0%, 5.7%, 3.8% and 6.6% yr-1, respectively. These figures suggest that the efforts of Taiwan in reducing air pollution are largely being negated by foreign contributions. Ozone showed a steady increase of 3.3% yr-1, and a portion of this was associated with a 1.0% yr-1 increase in background values. Local and background PM10 concentrations did not show significant long-term trends, but rather strong inter-annual variations associated with dust storm activity in East Asia. The domestic fractions of NO and NO2 respectively decreased from 90% and 85% in 1994 to less than 60% and 70% in 2010. In contrast, the domestic fraction of SO2 decreased from 82% in 1994 to 27% in 2010. The domestic fraction of CO exhibited no obvious trend due to concurrent decreases in local and background contributions. Background O3 values tended to drop across Taiwan due to the titration effect from domestic NO emissions, and the fraction of domestic O3 titration decreased from 50% in the mid-90s to 25% in 2010. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81750
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, National Taiwan University, Taiwan; Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, United States
Recommended Citation:
Chen J,-P,, Yang C,et al. Estimation of foreign versus domestic contributions to Taiwan's air pollution[J]. Atmospheric Environment,2015-01-01,112