globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2013.09.057
Scopus记录号: 2-s2.0-84897086929
论文题名:
Diesel vehicle and urban burning contributions to black carbon concentrations and size distributions in Tijuana, Mexico, during the Cal-Mex 2010 campaign
作者: Takahama S; , Russell L; M; , Shores C; A; , Marr L; C; , Zheng J; , Levy M; , Zhang R; , Castillo E; , Rodriguez-Ventura J; G; , Quintana P; J; E; , Subramanian R; , Zavala M; , Molina L; T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 88
起始页码: 341
结束页码: 352
语种: 英语
英文关键词: Black carbon ; Border ; California ; Mexico ; Soot
Scopus关键词: Diesel locomotives ; Fleet operations ; Particles (particulate matter) ; Soot ; Black carbon ; Border ; California ; Complementary techniques ; Correlation coefficient ; Mass median diameters ; Me-xico ; Tandem differential mobility analyzers ; Urban growth ; black carbon ; diesel fuel ; absorption ; burning ; concentration (composition) ; diesel ; size distribution ; soot ; spectrometry ; traffic emission ; trajectory ; urban pollution ; article ; burn ; comparative study ; diesel engine ; exhaust gas ; human ; incandescence ; light absorption ; Mexico ; motor vehicle ; priority journal ; soot ; urban area ; Baja California [(STT) Mexico] ; California ; Mexico [North America] ; San Diego ; Tijuana ; 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: Black carbon (BC) was characterized by three complementary techniques - incandescence (single particle soot photometer, SP2, at Parque Morelos), light absorption (cavity ringdown spectrometer with integrating nephelometer, CRDS-Neph, at Parque Morelos and Aethalometers at seven locations), and volatility (volatility tandem differential mobility analyzer, V-TDMA) during the Cal-Mex 2010 campaign. SP2, CRDS-Neph, and Aethalometer measurements characterized the BC mass, and SP2 and V-TDMA measurements also quantified BC-containing particle number, from which mass-mean BC diameters were calculated. Onaverage, the mass concentrations measured in Tijuana (1.8±2.6μgm-3 at Parque Morelos and 2.6μgm-3 in other regions of Tijuana) were higher than in San Diego or the international border crossing (0.5±0.6μgm-3). The observed BC mass concentrations were attributable to nighttime urban burning activities and diesel vehicles, both from the local (Baja California) and transported (Southern California) diesel vehicle fleets. Comparisons of the SP2 and co-located Aethalometers indicated that the two methods measured similar variations in BC mass concentrations (correlation coefficients greater than 0.85), and the mass concentrations were similar for the BC particles identified from nighttime urban burning sources. When the BC source changed to diesel vehicle emissions, the SP2 mass concentrations were lower than the Aethalometer mass concentrations by about 50%, likely indicating a change in the mass absorption efficiency and quantification by the Aethalometers. At Parque Morelos there were up to three different-sized modes of BC mass in particles: one mode below 100nm, one near 100nm, and another between 200 and 300nm. The mode between 200 and 300nm was associated with urban burning activities that influenced the site during evening hours. When backtrajectories indicated that airmasses came from the south to the Parque Morelos site, BC mass in particles was also larger (mass median diameter of 170nm rather than 155nm), consistent with the higher fraction of older diesel vehicles in the Tijuana fleet compared to the vehicles found in southern California. © 2013 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81140
Appears in Collections:气候变化事实与影响

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作者单位: Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States; Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, United States; Department of Atmospheric Sciences, Texas A and M University, College Station, TX, United States; Universidad Autónoma de Baja California, Tijuana, B.C., Mexico; Graduate School of Public Health, San Diego State University, San Diego, CA, United States; Droplet Measurement Technologies, Boulder, CO, United States; Molina Center for Energy and The Environment, La Jolla, CA, United States; Massachusetts Institute of Technology, Cambridge, MA, United States; APRL/IEE/ENAC, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, China; Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, United States

Recommended Citation:
Takahama S,, Russell L,M,et al. Diesel vehicle and urban burning contributions to black carbon concentrations and size distributions in Tijuana, Mexico, during the Cal-Mex 2010 campaign[J]. Atmospheric Environment,2014-01-01,88
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