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

该项目的总体目标是通过研究含碳材料的作用，提高社区对气溶胶间接（或二次气溶胶）效应的理解。 实验室和现场实验活动将与数值模拟练习相结合。 将开发一种表征云凝结核（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，这将允许在近真实的时间内确定有机物种对云凝结核性质的影响。 利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，当纳入全球气候模型时，可用于评估间接强迫。该项目将使本科工程师和科学家参与大气研究。 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。 两个博士学生将获得实验和数值模拟经验。 在主要研究者的家庭机构中有许多正规教育和推广方案（例如SURE和STEP），将在本项目中加以利用。 随着对大气化学-气候系统的进一步了解，可能会产生社会效益。 研究结果将发表在同行评审的期刊上，并在国家和国际科学会议上发表。

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.