| 项目编号: | 1338706
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| 项目名称: | Nucleation Studies with Sulfuric Acid (H2SO4) and Nitrogenous Bases |
| 作者: | David Hanson
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| 承担单位: | Augsburg College
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| 批准年: | 2013
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| 开始日期: | 2014-01-01
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| 结束日期: | 2017-12-31
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| 资助金额: | USD386463
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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: | sulfuric acid
; nucleation rate
; homogeneous nucleation
; acid-base cluster
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| 英文摘要: | This project involves laboratory investigations of homogeneous nucleation on sulfuric acid and its co-reactants water, ammonia and amines. The objectives are to: (1) measure the nucleation rate of particles formed from amines and sulfuric acid over a range of conditions with a bulk source flow reactor; (2) characterize the experimental flow reactor with a photo-chemical source for sulfuric acid and nucleation rate measurements for a few amines at low sulfuric acid concentrations, (3) develop and use computation fluid dynamic (CFD) simulations of the flow reactors, and (4) develop the use of amine sources and detection techniques. The laboratory results will be compared to CFD simulations that treat the cluster chemistry in detail, yielding thermodynamic information for the formation of acid-base clusters.
Nucleation is the driving force for new particle formation in the atmosphere. Newly formed particles can serve as cloud condensation nuclei, important for their role in the indirect effect of atmospheric aerosols on climate. The ultimate goal of this project is to test models for nucleation rates that can be incorporated into global climate models. Undergraduate students will participate in the construction of laboratory apparatuses, running experiments, developing mathematical models, analyzing data, and authoring publications. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97532
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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 Hanson. Nucleation Studies with Sulfuric Acid (H2SO4) and Nitrogenous Bases. 2013-01-01.
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