Knowledge Resource Center for Ecological Environment in Arid Area
| 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 |
| 开始日期 | 2015-12-01 |
| 结束日期 | 2020-11-30 |
| 资助经费 | 471584(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 项目所属计划 | Atmospheric Chemistry |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | 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 |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=1544425 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/342752 |
| 推荐引用方式 GB/T 7714 | Vera Samburova.Detailed Analysis of Brown Carbon Constituents in Biomass Burning Emissions.2015. |
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