| DOI: | 10.2172/1248899
|
| 报告号: | DOE/SC-ARM--16-014
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| 报告题名: | Deployment of ARM Aerial Facility (AAF) Scanning Mobility Particle Sizer Field Campaign Report |
| 作者: | Wang, J.
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| 出版年: | 2016
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| 发表日期: | 2016-03-31
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| 总页数: | 9
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 气溶胶
; 云凝结核
; 挥发性有机化合物
; 散射
; 冷凝
; 云
; 凝结
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| 主题词: | AEROSOLS
; CLOUD CONDENSATION NUCLEI
; VOLATILE ORGANIC COMPOUNDS
; SCATTERING
; CONDENSATION
; CLOUDS
|
| 英文摘要: | Atmospheric aerosols influence global climate by scattering and absorbing sunlight (direct effects) and by changing the microphysical structure, lifetime, and coverage of clouds (indirect effects). While it is widely accepted that aerosol indirect effects act to cool the Earth-atmosphere system by increasing cloud reflectivity and coverage, the magnitudes of the indirect effects are poorly quantified. One key aerosol property for understanding aerosol indirect effects is the ability of aerosol particles to form cloud droplets at atmospheric relevant supersaturationsâi.e., cloud condensation nuclei (CCN) activity. For particles consisting of typical atmospheric inorganic compounds, their CCN activity is well understood and can be effectively predicted using KĂśhler theory based on physicochemical properties of the solute, such as its mass, molar volume, and activity coefficient. However, atmospheric aerosols often consist of hundreds of organic species, which can contribute ~20-90% to the total fine aerosol mass. Depending on their properties, organic species can significantly influence the ability of aerosol particles to act as CCN and form cloud droplets. This project focuses on the CCN activity of secondary organic aerosol compounds formed from key biogenic volatile organic compounds (VOCs) under representative conditions, and the relationship between the hygroscopicity and composition of organic aerosols. The ARM Aerial Facility (AAF) scanning mobility particles sizer (SMPS) was deployed during a ~ 6 week intensive measurement campaign, taking place June 15-July 31 2015 at the Pacific Northwest National Laboratory (PNNL) Environmental Simulation Chamber. The SMPS was operated with a CCN counter. Aerosol particles were first classified by the differential mobility analyzer inside the SMPS; the classified aerosol will then be simultaneously characterized by a condensation particle counter (part of the SMPS) and the CCN counter. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1248899
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42185
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1248899.pdf（330KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Wang, J.. Deployment of ARM Aerial Facility (AAF) Scanning Mobility Particle Sizer Field Campaign Report. 2016-01-01.
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