Deployment of ARM Aerial Facility (AAF) Scanning Mobility Particle Sizer Field Campaign Report

doi:10.2172/1248899

GSTDTAP > 地球科学

DOI	10.2172/1248899
报告编号	DOE/SC-ARM--16-014
来源ID	OSTI ID: 1248899
	Deployment of ARM Aerial Facility (AAF) Scanning Mobility Particle Sizer Field Campaign Report
	Wang, J.
	2016-03-31
出版年	2016
页数	9
语种	英语
国家	美国
出版者	DOE ARM Climate Research Facility, Pacific Northwest National Laboratory;Richland, Washington.
领域	地球科学
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.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/7195
专题	地球科学
推荐引用方式 GB/T 7714	Wang, J.. Deployment of ARM Aerial Facility (AAF) Scanning Mobility Particle Sizer Field Campaign Report:DOE ARM Climate Research Facility, Pacific Northwest National Laboratory;Richland, Washington.,2016.