| 项目编号: | 1523178
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| 项目名称: | RUI: Brown Carbon Aerosol Production in Polluted Environments: The Effects of Oxidants, SO2, and Sunlight on Aqueous-Phase Aldehyde Reactivity |
| 作者: | David De Haan
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| 承担单位: | University of San Diego
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| 批准年: | 2014
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| 开始日期: | 2015-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | USD366635
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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
; aerosol particle
; aqueous-phase
; aqueous-phase browning process
; aqueous-phase oxidant
; aerosol-phase product
; research
; aldehyde partitioning
; cavity-attenuated phaseshift single-scattering albedo
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| 英文摘要: | This Research in Undergraduate Institutions (RUI) project is investigating the formation of brown carbon in the atmosphere. The identification of important photochemical sources of brown carbon are important because light-absorbing particles in the atmosphere (black and brown carbon) are the second largest anthropogenic driver of climate change, after CO2 emissions. At least 20 diverse undergraduate students will participate in this research as part of this project, making it more likely that they will choose careers in science.
The objectives of the research are: (1) to characterize aqueous-phase browning processes in droplets and in aerosol particles, with and without light and/or oxidants, (2) to measure the effect of dissolved SO2 on aldehyde partitioning and aerosol-phase products, (3) to determine the atmospheric significance of these reactions, and (4) to mentor and train a diverse cohort of undergraduate students, especially freshmen and sophomores, in atmospheric chemical research.
Brown carbon formation will be quantified using cavity-attenuated phaseshift single-scattering albedo (CAPS-ssa) spectroscopy on evaporating droplets and aging aerosol particles with and without added aqueous-phase oxidants in a lab chamber, in rooftop photochemistry experiments, and at the CESAM cloud chamber at University of Paris East at Creteil. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94219
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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: | |
David De Haan. RUI: Brown Carbon Aerosol Production in Polluted Environments: The Effects of Oxidants, SO2, and Sunlight on Aqueous-Phase Aldehyde Reactivity. 2014-01-01.
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