Collaborative Research: Reframing Modeling Approaches for Multiphase Chemistry--Isoprene and Beyond

合作研究：重构多相化学建模方法——异戊二烯及其他

• 批准号: 2037697
• 负责人: William Vizuete
• 金额: $ 40.99万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-05-15 至 2025-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2037697&HistoricalAwards=false
• 关键词: Collaborative; Research; Reframing; Modeling; Approaches; Collaborative; Research; Reframing; Modeling; Approaches

This project will focus on the creation of an integrated gas- and particle-phase chemical mechanism that incorporates the latest knowledge of gas-phase reactions, secondary organic aerosol (SOA) precursors, and the influence of gas/particle phase state on acid-catalyzed multiphase chemistry. The mechanism will be implemented in both regional and global scale models and is expected to improve the predictions of SOA from isoprene. The objectives of this project are to: (1) develop and evaluate a semi-explicit gas-phase chemical mechanism that includes isoprene oxidation and SOA precursor formation; (2) develop a multiphase chemical mechanism for isoprene-derived SOA, integrated with the gas-phase chemical mechanism; and (3) implement the new integrated mechanism in an air quality model for evaluation and sensitivity analysis relative to commonly used mechanisms. The project includes plans for undergraduate first-generation college students from the Lookout Scholars Program at the University of North Carolina to participate in air quality research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将集中于创建集成的气相和粒子相化学机制，该机制结合了气相反应，次级有机气溶胶（SOA）前体的最新知识，以及气/颗粒态对酸催化的多相性化学的影响。该机制将在区域和全球规模模型中实施，并有望改善异戊二烯的SOA预测。该项目的目标是：（1）开发和评估包括异戊二烯氧化和SOA前体形成的半明确气相化学机制； （2）开发一种与气相化学机制集成的异戊二烯衍生的SOA的多相化学机制； （3）在空气质量模型中实施新的综合机制，以进行评估和灵敏度分析相对于常用机制。该项目包括北卡罗来纳大学Lookout Scholars计划的本科第一代大学生的计划，以参加空气质量研究。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的审查标准通过评估来获得支持的。