CAREER: Toward an Understanding of the Indirect Climatic Effect of Organic Aerosol: Quantitative Assessments Using Experimental Characterization and Model Integration

职业：了解有机气溶胶的间接气候影响：使用实验表征和模型集成进行定量评估

• 批准号: 0349015
• 负责人: Athanasios Nenes
• 金额: $ 54.74万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0349015&HistoricalAwards=false
• 关键词: CAREER; Toward; Understanding; Indirect; Climatic

The overall goal of this project is to improve the community's understanding of the aerosol indirect (or secondary aerosol) effect through examination of the role of carbonaceous material. Laboratory and field experimental activities will be combined with numerical modeling exercises. A new method for characterizing cloud condensation nuclei (CCN) will be developed that combines size resolved measurements of surface tension, critical supersaturation and chemical composition, which will allow determination of the effects of organic species on CCN properties in near real time. The observations made with the new technique will be incorporated into a numerical module designed to simulate aerosol-cloud interactions which when incorporated into global climate models can be used to assess indirect forcing.The project will expose undergraduate engineers and scientists to atmospheric research. The PI will expose gifted high school students to atmospheric science with the goal to inspire them to a career in science and engineering. Two Ph.D. students will be given experimental and numerical modeling experiences. There are a number of formal education and outreach programs (e.g. SURE and STEP) at the PI's home institution that will be exploited in this project. Societal benefits are likely with improved understanding of the atmospheric chemical-climate system. The results will be published in peer-reviewed journals and presented at national and international scientific conferences.

这个项目的总体目标是通过检查含碳物质的作用来提高社区对气溶胶间接(或二次气溶胶)效应的了解。实验室和现场实验活动将与数值模拟练习相结合。将发展一种表征云凝聚核(CCN)的新方法，该方法结合了表面张力、临界过饱和度和化学成分的尺寸分辨测量，从而能够近实时地确定有机物种对CCN性质的影响。使用新技术进行的观测将被纳入一个数值模块，该模块旨在模拟气溶胶-云相互作用，当被纳入全球气候模型时，可以用来评估间接作用力。该项目将使本科生工程师和科学家接触到大气研究。PI将让有天赋的高中生接触大气科学，目的是激励他们从事科学和工程事业。两名博士生将获得实验和数值建模经验。在该项目中将利用在该国际组织的本土机构中开展的许多正规教育和外展项目(例如SURE和STEP)。提高对大气化学-气候系统的了解可能会带来社会效益。研究结果将发表在同行评议的期刊上，并在国内和国际科学会议上公布。