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生物挥发性有机化合物（BVOC）排放的综合测量，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。该项目有三个实验组成部分，跨越空间和时间尺度来实现这些目标。(1)一项全面的物种表征活动将确定北极植物是重要的BVOC排放者。(2)与正在进行的生态系统碳平衡研究项目合作，将利用微气象技术在Toolik野外站附近的冻土带生态系统上方测量异戊二烯和臭氧通量，并将这些数据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点进行叶片水平和室围测量，将有助于预测生态系统BVOC排放未来的变化。该项目将把两名未被充分代表的少数族裔学生——一名来自加州中央山谷，另一名来自芝加哥市区——带到阿拉斯加州的图里克野外研究站（Toolik Field Station）进行本科研究。首席研究员正在与芝加哥科学院的佩吉·诺特巴特自然博物馆进行合作，向高中教师传播全球气候变化主题，他将从这项提议中获得实地经验，并将其纳入他的教材中。此外，研究结果将通过在同行评议的期刊上发表和在会议上发表来传达给更广泛的科学界，这些跨学科的研究成果可以在会议上分享。

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.