| 项目编号: | 1455215
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| 项目名称: | CAREER: From Cradle to Grave: Radiative Properties of Biomass Burning Aerosols |
| 作者: | Rajan Chakrabarty
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| 承担单位: | Washington University
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| 批准年: | 2014
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| 开始日期: | 2015-06-01
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| 结束日期: | 2020-05-31
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| 资助金额: | USD403471
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| 资助来源: | US-NSF
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| 项目类别: | Continuing 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: | biomass-burning
; biomass-burning aerosol
; aerosol property
; direct radiative effect
; aerosol radiative transfer interaction
; research
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| 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. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94421
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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: | |
Rajan Chakrabarty. CAREER: From Cradle to Grave: Radiative Properties of Biomass Burning Aerosols. 2014-01-01.
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