Global S&T Development Trend Analysis Platform of Resources and Environment
项目编号 | 1455215 |
CAREER: From Cradle to Grave: Radiative Properties of Biomass Burning Aerosols | |
Rajan Chakrabarty | |
主持机构 | Washington University |
项目开始年 | 2015 |
2015-06-01 | |
项目结束日期 | 2020-05-31 |
资助机构 | US-NSF |
项目类别 | Continuing grant |
项目经费 | 403471(USD) |
国家 | 美国 |
语种 | 英语 |
英文摘要 | The proposed research seeks to develop a systematic understanding of the fundamental optical and life-cycle properties of biomass-burning aerosols from freshly emitted to several days of aging. The variations in aerosol properties will be quantified as a function of various combustion processes, such as: phase of burning, fuel type, and moisture content; as well as atmospheric processes such as oxidation, relative humidity and condensation of volatile organics. The significance of this research is to improve our understanding of the role that biomass-burning aerosols play in the direct radiative effects. Current models assume a spherical shape for these aerosols, whereas this research will combine laboratory and field experiments focused on the fractal shape of biomass-burning aerosols. This research has the potential to lead to two important societal benefits: reduced uncertainty in direct radiative forcing (DRF) effects from biomass-burning aerosols and the development of modules to enhance K-12 education through internet-based learning. This research and education plan uses the resources of Washington University's Institute for School Partnership (ISP), providing outreach to K-12 students and teachers in underrepresented minority communities. The proposed research combines a significant theoretical component coupled with well-conceived laboratory experiments. The goal is to develop a look-up-table (LUT) to replace the Mie-theory based modeling efforts currently in use. This study proposes a significant effort aimed at reconciling predicted refractive index and asymmetry parameter determined experimentally and using numerically exact T-matrix codes. If successful, this could lead to transformative understanding of the physical and optic properties of biomass-burning aerosols. Specifically this new knowledge may help reduce uncertainties associated with direct radiative forcing due to biomass-burning aerosols. Datasets resulting from this research will improve parameterization of aerosol radiative transfer interaction in global and regional modeling efforts. |
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/68007 |
专题 | 环境与发展全球科技态势 |
推荐引用方式 GB/T 7714 | Rajan Chakrabarty.CAREER: From Cradle to Grave: Radiative Properties of Biomass Burning Aerosols.2015. |
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