| 项目编号: | 1443140
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| 项目名称: | Probing Mechanisms of New Particle Formation and Growth: A Combined Experimental, Theoretical and Modeling Approach |
| 作者: | Barbara Finlayson-Pitts
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| 承担单位: | University of California-Irvine
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| 批准年: | 2013
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| 开始日期: | 2014-10-01
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| 结束日期: | 2018-09-30
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| 资助金额: | USD873026
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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: | growth
; new particle formation
; npfg
; fundamental mechanism
; modeling study
; climate modeling
; new particle
; amine
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| 英文摘要: | A series of laboratory and modeling studies will be conducted to study the process of new particle formation and growth (NPFG) in the atmosphere. This research will benefit society through improved air quality and climate modeling.
Laboratory studies will focus on the reactions of methanesulfonic (MSA) acid with amines in the presence of water, a mechanism that has been shown to form new particles very efficiently. Once particles form, their growth is limited despite the presence of excess water vapor and either MSA or amine, suggesting that the growth of the seed nuclei in air requires the uptake of other organic species. Organic compounds with different structures and functional groups that are representative of atmospheric species have been carefully selected for the experiments.
The project objectives are: (1) to elucidate the fundamental mechanisms and kinetics of NPFG from the reactions of gas phase acids, amines, water vapor, and a suite of representative atmospheric organic compounds; and (2) to develop a parameterization of these processes that accurately describes NPFG in complex mixtures that is appropriate for use in atmospheric models. The NPFG parameterization developed through this project will be incorporated into a regional air quality model and used to assess the impacts of new particle formation on a regional scale. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95453
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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: | |
Barbara Finlayson-Pitts. Probing Mechanisms of New Particle Formation and Growth: A Combined Experimental, Theoretical and Modeling Approach. 2013-01-01.
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