| 项目编号: | 1544425
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| 项目名称: | Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions |
| 作者: | Vera Samburova
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| 承担单位: | Nevada System of Higher Education, Desert Research Institute
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| 批准年: | 2014
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| 开始日期: | 2015-12-01
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| 结束日期: | 2018-11-30
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| 资助金额: | USD397281
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | brown carbon
; optical property
; usa
; chemical constituent
; biomass burning
; biomass-burning emission
; biomass burning experiment
; biomass burning smoke
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| 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. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93043
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Vera Samburova. Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions. 2014-01-01.
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