globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50672
论文题名:
Influence of boundary layer dynamics and isoprene chemistry on the organic aerosol budget in a tropical forest
作者: Janssen R.H.H.; Vilà-Guerau De Arellano J.; Jimenez J.L.; Ganzeveld L.N.; Robinson N.H.; Allan J.D.; Coe H.; Pugh T.A.M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:16
起始页码: 9351
结束页码: 9366
语种: 英语
Scopus关键词: Aerosols ; Budget control ; Chemical engineering ; Forestry ; Free radicals ; Boundary layer dynamics ; Chemical factors ; Chemical pathways ; Chemical species ; Diurnal dynamics ; Entrainment process ; Peroxy radical chemistry ; Secondary organic aerosols ; Isoprene ; aerosol ; boundary layer ; concentration (composition) ; diurnal variation ; entrainment ; isoprene ; oxidation ; radical ; tropical forest ; Borneo
英文摘要: We study the organic aerosol (OA) budget in a tropical forest by analyzing a case that is representative for the OP3 campaign at Borneo. A model is designed that combines the essential dynamical and chemical processes that drive the diurnal evolution of reactants in the atmospheric boundary layer (BL). In this way, the model simultaneously represents the effects and interactions of various dynamical and chemical factors on the OA budget. The model is able to reproduce the observed diurnal dynamics of the BL, including the evolution of most chemical species involved in secondary organic aerosol (SOA) formation. A budget analysis of the contributions of the dynamic and chemical processes reveals the significance of the entrainment process in the diurnal evolution of SOA. Further, we perform a series of sensitivity analyses to determine the effect of meteorological forcings and isoprene chemical pathways on the OA budget. Subsidence and advection of cool air have opposing effects on the OA concentration, although both suppress BL growth. Recycling of the OH radical in the oxidation of isoprene may affect the amount of SOA that is formed, but must be understood better before its impact can be definitely determined. SOA formation from isoprene is calculated for both the low- and high-NOx pathway, with the latter dominating the isoprene peroxy radical chemistry. Finally, we study the significance of SOA formation through the reactive uptake of isoprene epoxydiols on acidic sulfate aerosol. Despite the incorporation of these new pathways, the OA concentration is systematically underestimated by about a factor of 2. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union.
资助项目: ATM-0919189 ; DE-SC0006035/DE-SC0006711
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63408
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Earth System Science and Climate Change, Wageningen University and Research Center, Wageningen, Netherlands; Atmospheric Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, Mainz, D-55128, Germany; Meteorology and Air Quality Section, Wageningen University and Research Center, Wageningen, Netherlands; Cooperative Institute for Research in the Environmental Sciences, Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, United States; Centre for Atmospheric Science, School of Earth Atmospheric and Environmental Science, University of Manchester, Manchester, United Kingdom; Seasonal to Decadal Prediction, Met Office, Exeter, United Kingdom; National Centre for Atmospheric Science, University of Manchester, Manchester, United Kingdom; Lancaster Environment Centre, University of Lancaster, Lancaster, United Kingdom; Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research/Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany

Recommended Citation:
Janssen R.H.H.,Vilà-Guerau De Arellano J.,Jimenez J.L.,et al. Influence of boundary layer dynamics and isoprene chemistry on the organic aerosol budget in a tropical forest[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)
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