DOI: 10.1016/j.atmosenv.2013.11.066
Scopus记录号: 2-s2.0-84896016964
论文题名: Carbonaceous aerosols in the air masses transported from Indochina to Taiwan: Long-term observation at Mt. Lulin
作者: Chuang M ; -T ; , Lee C ; -T ; , Chou C ; C ; -K ; , Lin N ; -H ; , Sheu G ; -R ; , Wang J ; -L ; , Chang S ; -C ; , Wang S ; -H ; , Chi K ; H ; , Young C ; -Y ; , Huang H ; , Chen H ; -W ; , Weng G ; -H ; , Lai S ; -Y ; , Hsu S ; -P ; , Chang Y ; -J ; , Chang J ; -H ; , Wu X ; -C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 507
结束页码: 516
语种: 英语
英文关键词: Background carbonaceous content
; Biomass burning
; Carbons from biomass burning
; High-elevation aerosol
Scopus关键词: Biomass
; Troposphere
; Aerosol collections
; Background carbonaceous content
; Biomass-burning
; Carbonaceous aerosol
; Carbonaceous concentrations
; Carbonaceous fractions
; Interagency monitoring of protected visual environments
; Long-term observations
; Atmospheric aerosols
; carbon
; elemental carbon
; organic carbon
; unclassified drug
; aerosol
; air mass
; anthropogenic source
; biomass burning
; carbon emission
; climate effect
; concentration (composition)
; elevation
; organic carbon
; troposphere
; aerosol
; air mass
; air monitoring
; Anthropogenic
; article
; Asia
; biomass burning
; China
; concentration (parameters)
; controlled study
; environmental aspects and related phenomena
; environmental impact
; environmental impact assessment
; environmental parameters
; Europe
; geographic distribution
; high temperature
; low temperature
; oceanic regions
; plume
; priority journal
; Taiwan
; troposphere
; Europe
; Indochina
; Mount Lulin
; Pacific Ocean
; Pacific Ocean (West)
; 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: Eight carbonaceous fractions from aerosols were resolved using the Interagency Monitoring of Protected Visual Environments (IMPROVE) protocol (Chow etal., 1993). The aerosols were collected at the Mountain Lulin Atmospheric Background Station (Mt. Lulin, 2862ma.s.l.) in Central Taiwan from April 2003 to April 2012. The monthly and yearly levels of organic carbon (OC) and elemental carbon (EC) varied consistently with PM2.5 mass concentrations during biomass burning (BB) period. The highest monthly carbonaceous content was observed in March and the highest yearly carbonaceous concentration was observed in 2007. This finding is consistent with the BB activity in Indochina and indicates that carbonaceous content is a major component of BB aerosols. Lee etal. (2011) classified four trajectory groups from the air masses transported to Mt. Lulin during the aerosol collection period. For the air masses transported from the BB area (the BB group) in Indochina, the carbonaceous content was greater than the water-soluble ions in PM2.5, and the OC/EC ratio (4.8±1.5) was high. With EC as the indicator of primary emission sources, the air masses of the BB group were found to contain more primary than secondary OC. The Anthropogenic group (from the local and free troposphere below the 700-hPa pressure level over the Asian continent) probably contained more secondary than primary OC or the sources of OC and EC could be quite diverse. The average char-EC/soot-EC (low-temperature EC/high-temperature EC) ratios were 3.9±3.5, 0.4±0.4, 0.9±0.8, and 0.3±0.4 for the trajectory groups BB, SNBB (from BB source areas during the non-BB period), Anthropogenic, and FT (from the oceanic area and the free troposphere above the 700-hPa pressure level over the Asian continent), respectively. The presence of a high char-EC/soot-EC ratio confirmed the correct classification of the BB group, whereas the low ratios from the other groups indicated the strong influence of vehicle exhaust. It is noted that higher OC and EC levels were obtained at Mt. Lulin as compared with those obtained at other high-elevation sites. This difference suggested that the Indochina BB plume exhibited a more serious climatic impact on the background air in East Asia than in other places in Asia and Europe. On the basis of the carbonaceous levels of the SNBB and FT groups, the background OC and EC levels of approximately 3000m in the West Pacific are around 1.33μgm-3 and 0.35μgm-3, respectively. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81249
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Graduate Institute of Environmental Engineering, National Central University, Jhongli 32001, Taiwan; Research Center for Environmental Changes, Academia Sinica, Taipei 115, Taiwan; Department of Atmospheric Sciences, National Central University, Jhongli 32001, Taiwan; Department of Chemistry, National Central University, Jhongli 32001, Taiwan; Environmental Protection Administration, 10042, Taiwan; Institute of Environmental and Occupational Health Sciences, National Yang Ming University, Taipei 112, Taiwan; Department of Natural Resource, Chinese Culture University, Taipei 11114, Taiwan
Recommended Citation:
Chuang M,-T,, Lee C,et al. Carbonaceous aerosols in the air masses transported from Indochina to Taiwan: Long-term observation at Mt. Lulin[J]. Atmospheric Environment,2014-01-01,89