Acquisition of Instrumentation for Enhancing Studies of Aerosol-Cloud Interactions

购买仪器以加强气溶胶-云相互作用的研究

• 批准号: 0521643
• 负责人: Sonia Kreidenweis
• 金额: $ 90.88万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0521643&HistoricalAwards=false
• 关键词: Acquisition; Instrumentation; Enhancing; Studies; Aerosol

This project involves the purchase of a suite of instruments to study the detailed physical and chemical properties of aerosols and clouds. The instruments are a high-resolution Time-of-Flight Aerosol Mass Spectrometer from Aerodyne for on-line particle composition measurements; a Particle Phase Discriminator for distinguishing supercooled cloud droplets from small ice crystals; a Liquid Chromatograph-Mass Spectrometer for improved characterization of polar organic material in aerosol particles, fog, and clouds; a Cloud Condensation Nucleus counter for detection of aerosol particles that can be used to measure cloud droplet formation, and an Aerosol Generation and Sizing System for the generation of aerosol particles of known size and composition for laboratory studies of cloud nucleation. The planned measurements are central to many key questions in air quality, climate change and hydrological cycling in the atmosphere at the present time, such as the indirect effect of aerosols on climate. The instrumentation will support Colorado State University projects on ice nucleation on aerosol particles, studies of aerosol processing by clouds and fogs, studies of the relationships between particle composition, water uptake, cloud drop/ice crystal formation, and studies of hygroscopic and freezing properties of biogenic and smoke aerosols. A number of academic courses are expected to benefit from the equipment acquisition, and graduate students will gain useful training experience in the use of such equipment. These instruments are also to be made available to researchers outside Colorado State University on a paying basis.

该项目涉及购买一套仪器，以研究气溶胶和云的详细物理和化学特性。这些仪器是：Aerodyne公司的高分辨率飞行时间气溶胶质谱仪，用于在线测量粒子组成;粒子相位鉴别仪，用于区分过冷云滴和小冰晶;液相色谱-质谱仪，用于改进气溶胶粒子、雾和云中极性有机物质的特性;用于探测气溶胶粒子的云凝结核计数器，可用于测量云滴的形成，以及气溶胶生成和尺寸测量系统，用于生成已知尺寸和成分的气溶胶颗粒，用于云成核的实验室研究。计划中的测量是目前空气质量、气候变化和大气中水文循环等许多关键问题的核心，例如气溶胶对气候的间接影响。该仪器将支持科罗拉多州立大学的气溶胶颗粒冰成核项目、云和雾对气溶胶处理的研究、颗粒组成、水分吸收、云滴/冰晶形成之间关系的研究以及生物和烟雾气溶胶吸湿和冷冻特性的研究。一些学术课程预计将从购置设备中受益，研究生将获得使用这些设备的有用培训经验。这些仪器也将在付费的基础上提供给科罗拉多州立大学以外的研究人员。