DOI: 10.1002/2016JD024879
论文题名: Ice-nucleating particle emissions from biomass combustion and the potential importance of soot aerosol
作者: Levin E.J.T. ; Mcmeeking G.R. ; Demott P.J. ; Mccluskey C.S. ; Carrico C.M. ; Nakao S. ; Jayarathne T. ; Stone E.A. ; Stockwell C.E. ; Yokelson R.J. ; Kreidenweis S.M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
语种: 英语
英文关键词: Biomass combustion
; Black carbon
; Ice-nucleating particles
英文摘要: Ice-nucleating particles (INPs) are required for initial ice crystal formation in clouds at temperatures warmer than about -36°C and thus play a crucial role in cloud and precipitation formation. Biomass burning has been found to be a source of INPs in previous studies and is also a major contributor to atmospheric black carbon (BC) concentrations. This study focuses on isolating the BC contribution to the INP population associated with biomass combustion. Emissions of condensation mode INPs from a number of globally relevant biomass fuels were measured at -30°C and above water saturation as fires progressed from ignition to extinguishment in a laboratory setting. Number emissions of INPs were found to be highest during intense flaming combustion (modified combustion efficiency>0.95). Overall, combustion emissions from 13 of 22 different biomass fuel types produced measurable INP concentrations for at least one replicate experiment. On average, all burns that produced measureable INPs had higher combustion efficiency, which is associated with higher BC emissions, than those that did not produce measureable INPs. Across all burns that produced measureable INPs, concentrations ranged from 0.1 to 10cm-3, and the median emission factor was about 2×107 INPs per kilogram of fuel burned. For a subset of the burns, the contribution of refractory black carbon (rBC) to INP concentrations was determined by removing rBC via laser-induced incandescence. Reductions in INPs of 0-70% were observed, indicating an important contribution of rBC particles to INP concentrations for some burns, especially marsh grasses. ©2016. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62942
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: Department of Atmospheric Science Colorado State University Fort Collins, Colorado USA; Now at Handix Scientific Boulder, Colorado USA; Department of Civil and Environmental Engineering New Mexico Institute of Mining and Technology Socorro, New Mexico USA; Now at Department of Chemical and Biomolecular Engineering Clarkson University Potsdam, New York USA; Department of Chemistry University of Iowa Iowa City, Iowa USA; Department of Chemistry University of Montana Missoula, Montana USA
Recommended Citation:
Levin E.J.T.,Mcmeeking G.R.,Demott P.J.,et al. Ice-nucleating particle emissions from biomass combustion and the potential importance of soot aerosol[J]. Journal of Geophysical Research: Atmospheres,2016-01-01