Collaborative Research: Kinetics and Mechanism of Restructuring of Atmospheric Soot and Associated Impact on Light Absorption

GSTDTAP

项目编号	1463702
	Collaborative Research: Kinetics and Mechanism of Restructuring of Atmospheric Soot and Associated Impact on Light Absorption
	Alexei Khalizov
主持机构	New Jersey Institute of Technology
项目开始年	2015
	2015-07-15
项目结束日期	2018-06-30
资助机构	US-NSF
项目类别	Standard Grant
项目经费	395540(USD)
国家	美国
语种	英语
英文摘要	Nanoparticulate atmospheric soot particles are complex in their shape, size and chemical composition. They can be variably observed as fractal aggregates composed of elemental carbon (EC- in graphitic or graphene structures), or organic carbon compounds (OC - hydrocarbons with oxidized or other attached heteroatom moieties). Other aerosol materials potentially embed or enmesh, in either internal or external mixing states, such soot particles as they age in the ambient atmosphere. Our limited knowledge of relationships between soot mixing state, soot morphology, and soot optical properties, remains a major source of uncertainty in evaluating the optical and radiative contribution of carbonaceous aerosols to direct radiative) climate forcing. Researchers will undertake a series of combined laboratory and computational studies to better characterize the formation of soot particles with different mixing states, and to investigate associated structural and optical properties in relation to the particle initial state and aerosol aging. Mixing states and morphology of soot aggregates will be determined from a combination of mass-mobility measurements and environmental scanning electron microscopy imaging. Optical calculations constrained by the experimentally measured mixing states and morphologies will provide a closure with directly determined light absorption and scattering by this range of carbonaceous soot. One broader impact of this work will be the promotion of collaboration between faculty at a PhD-granting and a primarily undergraduate teaching university.
来源学科分类	Geosciences - Atmospheric and Geospace Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/68283
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Alexei Khalizov.Collaborative Research: Kinetics and Mechanism of Restructuring of Atmospheric Soot and Associated Impact on Light Absorption.2015.