Biogenic Volatile Organic Carbon (VOC) Emission and Organic Aerosol Composition During the Biosphere Effects on Aerosol and Photochemistry Experiment (BEARPEX)

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该项目的主要目标是更好地了解二次有机气溶胶（SOA），它是由大气中的挥发性有机碳化合物（VOC）前体形成的气溶胶。直到最近，还不可能用现场仪器测量气溶胶的详细有机化学成分，这限制了对SOA形成和气溶胶源贡献的研究。该项目将部署能够详细测量有机气溶胶成分的新仪器，以进一步调查森林生物圈-大气交换，重点关注生物源和人为排放对初级和次级有机气溶胶的贡献。这项工作将通过在Blodgett Forest进行的多研究者合作实验（BEARPEX 2009）和雾霾室实验进行，其中包括改进SOA中特定化学物质的测量。该研究将为预测SOA形成和分布的模型、评估VOC排放对区域空气质量和全球气候影响的模型以及预测生物源性VOC排放与气候变化相互作用的模型提供重要的新约束。BEARPEX 2009期间的多项合作研究工作将加强对博士生和博士后研究人员的培训，本科生也将通过参与项目获得经验。通过项目开发的研究方法和结果将由首席研究员整合到课堂教学中。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The primary goal of this project is to develop a better understanding of secondary organic aerosols (SOA), which are aerosols that are formed from volatile organic carbon compound (VOC) precursors in the atmosphere. Until very recently, it was not possible to measure the detailed organic chemical composition of aerosols with in situ instrumentation, limiting investigations of SOA formation and aerosol source contributions. This project will deploy new instrumentation capable of detailed organic aerosol composition measurements to further investigate forest biosphere-atmosphere exchange, with a focus on the contributions of biogenic as well as anthropogenic emissions to primary and secondary organic aerosol. This effort will be carried out through a multi-investigator collaborative experiment at Blodgett Forest, known as BEARPEX 2009, and through smog chamber experiments that include improved measurements of the specific chemicals in SOA.This research will provide important new constraints for models predicting the formation and distribution of SOA, models that estimate the effects of VOC emissions on regional air quality and global climate, and models predicting the interaction of biogenic VOC emissions with climate change. The multiple collaborative research efforts that will occur during BEARPEX 2009 will enhance the training of PhD students and postdoctoral researchers, and undergraduates will also gain experience through their involvement in the project. Research methodologies and results developed through the project will be integrated into classroom teaching by the principal investigator.