Collaborative Research: EAGER--Biogenic Volatile Organic Compound Emissions from the Tundra and Arctic Atmospheric Chemistry

该项目将对北极冻土带生态系统进行全面的生物源挥发性有机化合物(BVOC)排放测量，目的是了解BVOC排放对大气化学的影响，以及北极全球变化因素对BVOC排放的影响。该项目有三个实验部分，跨越空间和时间尺度，以实现这些目标。(1)一项全面的物种鉴定运动将确定北极植物是BVOC的重要排放者。(2)将与正在进行的生态系统碳平衡研究项目合作，利用微气象技术测量Toolik现场站附近冻土带生态系统上方的异戊二烯和臭氧通量，这些数据将与光化学模型一起用于研究对大气化学的影响。(3)在现有的全球变化因子操纵地点进行的叶水平和箱体围隔测量将有助于预测未来生态系统BVOC排放将如何变化。该项目将把两名代表不足的少数族裔学生带到阿拉斯加的图利克野外站进行本科生研究，他们一人来自加利福尼亚州的中央山谷，另一人来自芝加哥市区。首席研究员正在与芝加哥科学院佩吉·诺特巴特自然博物馆合作，向高中教师传达全球气候变化的主题，他将把这项提案中的实地经验纳入他的教材中。此外，研究结果将通过在同行评议的期刊上发表和在可以分享这些跨学科研究成果的会议上发表而向更广泛的科学界传播。

This project will conduct comprehensive biogenic volatile organic compound (BVOC) emission measurements for an Arctic tundra ecosystem with the goals of understanding the impact of BVOC emissions on atmospheric chemistry and the effects of global change factors in the Arctic on BVOC emissions. The project has three experimental components which span spatial and temporal scales to achieve these goals. (1) A comprehensive species characterization campaign will identify Arctic plants that are important BVOC emitters. (2) An intensive field campaign will use micrometeorological techniques to measure isoprene and ozone fluxes above a tundra ecosystem near the Toolik Field Station in collaboration with an on-going project studying ecosystem carbon balance, and these data will be used with a photochemical model to study impacts on atmospheric chemistry. (3) Leaf-level and chamber enclosure measurements at existing global change factor manipulation sites will allow for predictions of how ecosystem BVOC emissions will change in the future.The project will bring two underrepresented minority students, one from the Central Valley in California and the other from urban Chicago, to the Toolik Field Station in Alaska for undergraduate research. The principal investigator has an on-going collaboration with the Peggy Notebaert Nature Museum of the Chicago Academy of Sciences to communicate global climate change themes to high school teachers, and he will incorporate the field experiences from this proposal into his teaching materials. In addition, results of the research will be communicated to the broader scientific community through publication in peer-reviewed journals and presentations at meetings where these cross-disciplinary research results can be shared.