AGS-PRF: Modeling Water Content and Solute Activities of Atmospheric Aerosols at Extremely Low Relative Humidities

AGS-PRF：模拟极低相对湿度下大气气溶胶的含水量和溶质活性

• 批准号: 1137701
• 负责人: Cari Dutcher
• 金额: $ 17.2万
• 依托单位: Dutcher Cari S
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1137701&HistoricalAwards=false
• 关键词: AGS; PRF; Modeling; Water; Content

Dr. Cari S. Dutcher was awarded an Atmospheric and Geospace Sciences Postdoctoral Research Fellowship to conduct a research project with Anthony Wexler at the University of California at Davis (UCD). Dutcher will employ a statistical thermodynamic approach to the uptake of atmospherically important species onto particles that are important in the air, such as black carbon, organics and water-containing aerosols. The thermodynamic treatment of aerosol properties will be extended to conditions found in the upper troposphere, with low temperatures (relevant to higher altitudes and latitudes) and at low relative humidity (relevant to arid climates and some higher altitude situations). Results will enhance thermodynamic predictions of the Extended Aerosol Inorganics Model (E-AIM) and will improve understanding of (1) the interactions of gases, particles, aerosols and water in the earth's atmosphere, (2) the modification of thermodynamic properties in the cold, dry arid conditions found in the upper troposphere and (3) the impact, both direct and indirect, sorption processes have on the role of particles in climate.Dutcher will also develop a web-based model calculator to enable those who are not experts in atmospheric thermodynamics to make effective use of models for practical calculations. Dutcher will integrate research and education through mentorship of undergraduate researchers and by engaging in interactive environmental and conservational demonstrations at local schools. The project will also support the outreach programs currently underway at the Air Quality Research Center at UCD, hosting activities from high-school group tours to international conferences in air quality and climate change. Several activities would be aimed at young girls.

Cari S. Dutcher 博士获得了大气和地球空间科学博士后研究奖学金，与加州大学戴维斯分校 (UCD) 的 Anthony Wexler 一起开展研究项目。达彻将采用统计热力学方法将大气中重要的物质吸收到空气中重要的颗粒上，例如黑碳、有机物和含水气溶胶。气溶胶特性的热力学处理将扩展到对流层上层的条件，即低温（与较高海拔和纬度相关）和低相对湿度（与干旱气候和一些高海拔情况相关）。结果将增强扩展气溶胶无机模型（E-AIM）的热力学预测，并将增进对（1）地球大气中气体、颗粒、气溶胶和水相互作用的理解，（2）寒冷环境下热力学性质的修改，对流层上层的干燥干旱条件以及（3）吸附过程对颗粒在气候中的作用的直接和间接影响。Dutcher 还将开发一个基于网络的模型计算器，使那些不是大气热力学专家，无法有效利用模型进行实际计算。达彻将通过指导本科生研究人员以及在当地学校参与互动环境和保护示范来整合研究和教育。该项目还将支持目前在都柏林大学空气质量研究中心正在进行的外展项目，举办从高中团体参观到空气质量和气候变化国际会议等活动。有几项活动将针对年轻女孩。