Assessments of the Impact of Tropospheric Aerosols on Actinic Fluxes, Photosynthetically Available Radiation (PAR), and Radiative Forcing

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项目编号	1637279
	Assessments of the Impact of Tropospheric Aerosols on Actinic Fluxes, Photosynthetically Available Radiation (PAR), and Radiative Forcing
	Irina Sokolik
主持机构	Georgia Tech Research Corporation
项目开始年	2016
	2016-09-01
项目结束日期	2019-08-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	578404(USD)
国家	美国
语种	英语
英文摘要	As solar radiation travels through the atmosphere it can interact with small particles known as aerosols. These particles can scatter and absorb solar radiation, which affects the amount of radiation that reaches the Earth's surface. Solar radiation interactions with aerosols can also affect the chemistry of the atmosphere, such as through the creation and destruction of ozone. To better improve understanding and modeling of these interactions, the research team will use data collected by research aircraft over the past two decades alongside numerical modeling to answer questions about how aerosols interact with solar radiation over a range of altitudes, solar angles, and geographic settings. The results of the project will help to improve climate models. Additional benefits will be the education and training of a graduate student and the development of a database that can be used by other researchers. The research team will improve understanding of the impact of tropospheric aerosols on actinic fluxes and atmospheric composition by integrating and analyzing observed spectral actinic fluxes. The NCAR Charged-coupled devices Actinic Flux Spectroradiometer (CAFS) has flown on numerous field campaigns over the past two decades and the measurements from CAFS plus aerosol characterization measurements offers a unique opportunity to examine the impact of aerosols on photochemistry. The CAFS data, along with concurrent sub-orbital and satellite data, and modeling will be used to address the four main objectives: 1) Develop a new Aerosol Attenuated Actinic Flux (AAAF) database, 2) Perform an in-depth analysis of actinic fluxes in different aerosol-laden conditions, 3) Perform an analysis of the impact of smoke aerosol on the photosynthetically available radiation (PAR) and the UV-direct radiative forcing, and 4) Develop recommendations for climate models.
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/70318
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Irina Sokolik.Assessments of the Impact of Tropospheric Aerosols on Actinic Fluxes, Photosynthetically Available Radiation (PAR), and Radiative Forcing.2016.