Development, Validation, and Application of Multicomponent Atmospheric New Particle Formation Schemes

多组分大气新粒子形成方案的开发、验证和应用

• 批准号: 1550816
• 负责人: Fangqun Yu
• 金额: $ 54.59万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-02-15 至 2021-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1550816&HistoricalAwards=false
• 关键词: Development; Validation; Application; Multicomponent; Atmospheric

This project is focused on investigating the nucleation or formation of very small new particles in the atmosphere. The method relies on complex calculations involving the structural and thermochemical properties of atmospheric clusters. Modeling results will be compared with measurements where they are available. The project will result in nucleation schemes that can be incorporated into regional and global models to reduce uncertainties in the assessment of the climatic and environmental impacts of atmospheric aerosols. The objective of this effort is to develop new schemes of multicomponent nucleation in the atmosphere involving sulfuric acid, water, ammonia, methylamines, and organics. The project consists of 4 tasks: (1) Quantum chemistry studies of neutral and charged ternary clusters; (2) Development of new nucleation models; (3) Application and evaluation of new nucleation schemes in the atmosphere; and (4) Assessing the climate implications of ternary nucleation processes. The implications of the new nucleation schemes on the aerosol indirect radiative forcing will be evaluated using the GEOS-Chem model.

该项目的重点是研究大气中非常小的新颗粒的成核或形成。该方法依赖于涉及大气团簇的结构和热化学性质的复杂计算。 建模结果将与可用的测量结果进行比较。 该项目将产生可纳入区域和全球模型的成核方案，以减少大气气溶胶对气候和环境影响评估的不确定性。这项工作的目标是开发大气中涉及硫酸、水、氨、甲胺和有机物的多组分成核的新方案。该项目包括4个任务：（1）中性和带电三元团簇的量子化学研究； (2)新成核模型的开发； (3)新型成核方案在大气中的应用与评价； (4) 评估三元成核过程对气候的影响。 新成核方案对气溶胶间接辐射强迫的影响将使用 GEOS-Chem 模型进行评估。