CAREER: New Techniques for Aerosol/Cloud Sampling and Analysis

该项目涉及高速飞行器气溶胶-云表征的新技术，包括1)利用新的双通道逆流虚拟撞击器对活性颗粒进行尺寸分离采样，以分析多相云；2)钝体采样器设计，用于采样非活性颗粒，而不受液滴破碎的污染；以及3)用于颗粒大小和成分表征的快速气溶胶流动光谱仪。基本的气溶胶和流体动力学模型将与数值模拟和风洞实验相结合，以获得优化的仪器设计。将建造一个用于从广泛的飞机平台上表征气溶胶-云的采样器和一个快速测量颗粒仪器，该仪器可以扩展用于串联式差分迁移率分析仪(TDMA)测量大气气溶胶的尺寸分辨成分特征。教育计划包括K-12扩展计划、本科研究和新课程开发。将制定一项推广计划，将云物理和大气科学基础知识传授给高中生。本科生将通过参与暑期和荣誉研究项目来接触大气科学主题。研究成果将与一门新的实验气雾剂技术研究生课程相结合，重点是通过基于项目的方法进行学习。将由本科生参与开发一个基于网络的工具，为大气采样社区提供飞机-粒子相互作用的可视化。将通过克拉克森的少数族裔项目和洛杉矶巴吞鲁日的南方大学的额外努力来协调招收代表人数不足的学生。

This project concerns new techniques for aerosol-cloud characterization from high-speed aircraft, including 1) size-segregated sampling of activated particles with a new dual-channel counterflow virtual impactor for analysis of multi-phase clouds; 2) a blunt-body sampler design for sampling non-activated particles without contamination from droplet shatter; and 3) a fast aerosol mobility spectrometer for particle size and compositional characterization. Fundamental aerosol and fluid dynamics modeling will be coupled with numerical simulations and wind-tunnel experiments to obtain optimized instrument designs. A sampler for aerosol-cloud characterization from a wide range of aircraft platforms and a fast sizing particle instrument that could be extended for tandem differential mobility analyzer (TDMA) measurements of size-resolved compositional characteristics of atmospheric aerosol will be built.The educational plan includes a K-12 outreach program, undergraduate research, and new course development. An outreach program will be developed to bring cloud physics and atmospheric science fundamentals to high school students. Undergraduate students will be exposed to atmospheric science topics through participation in summer and honors research projects. Research results will be integrated with a new graduate course in experimental aerosol techniques, with emphasis on learning through a project-based approach. A web-based tool will be developed with participation by undergraduate students, to provide visualization of aircraft-particle interactions for the atmospheric sampling community. Recruitment of underrepresented students will be coordinated both through Clarkson's minority programs and with additional efforts at Southern University, Baton Rouge, LA.