DOI: 10.1002/jgrd.50244
论文题名: Enhanced modern carbon and biogenic organic tracers in Northeast Asian aerosols during spring/summer
作者: Pavuluri C.M. ; Kawamura K. ; Uchida M. ; Kondo M. ; Fu P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 5 起始页码: 2362
结束页码: 2371
语种: 英语
英文关键词: atmospheric aerosols
; Northeast Asia
; organic tracers
; radiocarbon
Scopus关键词: Atmospheric aerosols
; Atmospheric thermodynamics
; Bioactivity
; Carbon
; Fuels
; Carbonaceous components
; Fossil fuel combustion
; Northeast Asia
; Organic tracers
; radiocarbon
; Seasonal differences
; Total suspended particulate matters
; Water-soluble organic carbon
; Organic carbon
; aerosol composition
; air sampling
; atmospheric modeling
; biomass burning
; carbon
; emission
; fossil fuel
; fungus
; seasonal variation
; spore
; spring (season)
; summer
; suspended particulate matter
; temperate environment
; tracer
; volatile organic compound
; Hokkaido
; Japan
; Sapporo
英文摘要: To better understand the organic aerosol (OA) sources and formation processes in Northeast Asia, we studied atmospheric aerosol (total suspended particulate matter (TSP)) samples collected from Sapporo, northern Japan over 1 year period for the measurement of radiocarbon (14C) in aerosol total carbon (TC) and water-soluble organic carbon (WSOC). We also measured various organic tracers and carbonaceous components: organic carbon (OC), WSOC, and elemental carbon (EC). We found that the percent modern carbon (pMC) in TC and WSOC increased during spring/summer with maximum (85% and 117%, respectively) in May. The temporal variations of pMC in WSOC and TC showed a good agreement with changes in the contributions of biogenic OA tracers to OC and WSOC. We also found that emissions of pollen in spring and fungal spores from soil in summer/autumn as well as secondary OA formation from biogenic VOCs (BVOCs) in summer/autumn are responsible for the enhanced pMC. Although emissions from biomass burning are significant in winter, enhanced fossil fuel combustion lowers the pMC in WSOC and TC. Throughout the year, modern carbon is more enriched in WSOC fraction than in TC, indicating that WSOC is more associated with biological activity. This study warrants a need to reconcile the atmospheric models, considering seasonal differences in BVOC emissions, particularly in temperate regions, in estimating secondary OA budget and its climatic impacts. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63875
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: Institute of Low Temperature Science, Hokkaido University, N19, W8, Kita-ku, Sapporo 060-0819, Japan; AMS Facility (NIES-TERRA), Center for Environmental Measurement and Analysis, National Institute for Environmental Studies, Tsukuba, Japan; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Pavuluri C.M.,Kawamura K.,Uchida M.,et al. Enhanced modern carbon and biogenic organic tracers in Northeast Asian aerosols during spring/summer[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(5)