Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions

GSTDTAP

项目编号	1544425
	Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions
	Vera Samburova
主持机构	Nevada System of Higher Education, Desert Research Institute
项目开始年	2015
	2015-12-01
项目结束日期	2018-11-30
资助机构	US-NSF
项目类别	Standard Grant
项目经费	397281(USD)
国家	美国
语种	英语
英文摘要	This proposal focuses on the study of brown carbon and its contribution to light absorption in the atmosphere. A significant portion of brown carbon emissions in the atmosphere has been associated with biomass burning during wildfires, such as forest and peat fires. In this project, fuels from a representative set of five wild land fuels will be burned under laboratory conditions. The researchers will use advanced techniques to determine the chemical composition and optical properties of the brown carbon produced. This research will greatly advance our knowledge of atmospheric aerosols and their impact on air quality and climate. Biomass burning experiments will be carried out using fuels from five different locations around the world: boreal forest and peat land, Siberia, Russia; extra tropical forest, Oregon, USA; tropical forest and peat, Brazil; coastal swamp peat, Florida, USA; and mixed conifer forest, Sierra Nevada mountains, USA. Highly resolved, quantitative chemical speciation of both gas and particle phases will contribute to the understanding of the volatility and reactivity of brown carbon compounds in biomass-burning emissions. Both the water-soluble and water-insoluble fractions of the organic aerosol will be analyzed with a variety of techniques to determine their speciation and absorption spectrum. The researchers will attempt to obtain closure on the light absorption by comparing model calculations of the optical properties based on knowledge of the chemical constituents and the measured optical properties of biomass burning smoke.
来源学科分类	Geosciences - Atmospheric and Geospace Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/68986
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Vera Samburova.Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions.2015.