气候变化领域集成服务门户(CCPortal): Biomass combustion produces ice-active minerals in biomass-burning aerosol and bottom ash

CCPortal

DOI	10.1073/pnas.1922128117
	Biomass combustion produces ice-active minerals in biomass-burning aerosol and bottom ash
	Jahn L.G.; Polen M.J.; Jahl L.G.; Brubaker T.A.; Somers J.; Sullivan R.C.
发表日期	2020
ISSN	0027-8424
起始页码	21928
结束页码	21937
卷号	117 期号:36
英文摘要	Ice nucleation and the resulting cloud glaciation are significant atmospheric processes that affect the evolution of clouds and their properties including radiative forcing and precipitation, yet the sources and properties of atmospheric ice nucleants are poorly constrained. Heterogeneous ice nucleation caused by ice-nucleating particles (INPs) enables cloud glaciation at temperatures above the homogeneous freezing regime that starts near -35 °C. Biomass burning is a significant global source of atmospheric particles and a highly variable and poorly understood source of INPs. The nature of these INPs and how they relate to the fuel composition and its combustion are critical gaps in our understanding of the effects of biomass burning on the environment and climate. Here we show that the combustion process transforms inorganic elements naturally present in the biomass (not soil or dust) to form potentially ice-active minerals in both the bottom ash and emitted aerosol particles. These particles possess ice-nucleation activities high enough to be relevant to mixed-phase clouds and are active over a wide temperature range, nucleating ice at up to -13 °C. Certain inorganic elements can thus serve as indicators to predict the production of ice nucleants from the fuel. Combustion-derived minerals are an important but understudied source of INPs in natural biomass-burning aerosol emissions in addition to lofted primary soil and dust particles. These discoveries and insights should advance the realistic incorporation of biomassburning INPs into atmospheric cloud and climate models. These mineral components produced in biomass-burning aerosol should also be studied in relation to other atmospheric chemistry processes, such as facilitating multiphase chemical reactions and nutrient availability. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Aerosol-cloud-climate interactions; Atmospheric chemistry; Climate change; Heterogeneous ice nucleation; Wildfires
语种	英语
scopus关键词	ice; inorganic compound; ice; mineral; aerosol; Article; atmospheric moisture; biomass; biomass burning; bottom ash; chemical reaction; climate change; cloud; combustion; dust; glaciation; nutrient availability; prediction; priority journal; soil; thermoregulation; aerosol; atmosphere; biomass; chemistry; fly ash; freezing; ice cover; particle size; wildfire; Aerosols; Atmosphere; Biomass; Climate Change; Coal Ash; Freezing; Ice; Ice Cover; Minerals; Particle Size; Wildfires
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160818
作者单位	Jahn, L.G., Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States, Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, United States; Polen, M.J., Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States, Department of Chemistry, McDaniel College, Westminster, MD 21157, United States; Jahl, L.G., Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States; Brubaker, T.A., Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States; Somers, J., Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States; Sullivan, R.C., Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA 15213, United States
推荐引用方式 GB/T 7714	Jahn L.G.,Polen M.J.,Jahl L.G.,et al. Biomass combustion produces ice-active minerals in biomass-burning aerosol and bottom ash[J],2020,117(36).
APA	Jahn L.G.,Polen M.J.,Jahl L.G.,Brubaker T.A.,Somers J.,&Sullivan R.C..(2020).Biomass combustion produces ice-active minerals in biomass-burning aerosol and bottom ash.Proceedings of the National Academy of Sciences of the United States of America,117(36).
MLA	Jahn L.G.,et al."Biomass combustion produces ice-active minerals in biomass-burning aerosol and bottom ash".Proceedings of the National Academy of Sciences of the United States of America 117.36(2020).