Collaborative Research: The Secondary Organic Aerosol Formation from the Oxidation of Furan-compounds to Understand the Atmospheric Impacts of Biomass Burning Smoke

该项目正在调查生物质燃烧的排放以及这些排放对空气质量和气候的影响。将进行实验室研究，以量化生物质燃烧产生的呋喃化合物(即含有4碳、1氧芳香环的化合物)的排放量，并确定这些化合物在大气中的去向。本项目的具体目标是：n(1)确定呋喃化合物的OH和NO3氧化产生的有机化合物，并量化它们对SOa产率的贡献；(2)确定这种氧化化学以及产生的臭氧和SOA如何随Nmoc/NOx比、温度和相对湿度的变化而变化；(3)使用上述结果来开发这些呋喃化合物在生物质燃烧羽流中的氧化详细机制；以及(4)量化这一新机制如何改变生物质燃烧对大气臭氧和PM2.5的预测影响。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This project is investigating emissions from biomass combustion and the implications of these emissions on air quality and climate. Laboratory studies will be conducted to quantify the emissions of furan compounds (i.e., those containing a 4-carbon, 1-oxygen aromatic ring) from biomass burning and to determine the fate of these compounds in the atmosphere. The results of this project can be incorporated into the modeling of the impacts of biomass burning chemistry on local, regional, and global scales.The specific objectives of this project are to:n(1) Identify the organic compounds produced by the OH and NO3 oxidation of furan compounds and quantify their contribution to the SOA yield; (2) Determine how this oxidation chemistry, and the O3 and SOA produced, varies with NMOC/NOx ratio, temperature, and RH; (3) Use the above results to develop a detailed mechanism for the oxidation of these furan compounds in biomass burning plumes; and (4) Quantify how this new mechanism alters the predicted impacts of biomass burning on atmospheric O3 and PM2.5.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.