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

该项目将对北极苔原生态系统的生物挥发性有机化合物（BVOC）排放进行探索性测量，目的是评估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，以实现这些目标：（1）最初的物种定性活动将确定主要的北极植物物种是重要的BVOC排放者;（2）一项密集的实地活动将利用微气象技术，与一个非气象观测站合作，测量图利克实地站附近苔原生态系统上方的异戊二烯和臭氧通量。正在进行的生态系统碳平衡研究项目，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）还将进行叶片水平和室内封闭测量，并用于预测生态系统BVOC排放量未来可能发生的变化。该项目将邀请两名代表性不足的少数民族学生，一个来自加州的中央谷，另一个来自芝加哥市区，到阿拉斯加的图里克野外考察站进行本科生研究。首席研究员与芝加哥科学院的Peggy Notebaert自然博物馆正在进行合作，向高中教师传达全球气候变化主题，他将把这项建议的实地经验纳入他的教材。此外，研究结果将通过在同行评审的期刊上发表和在会议上发表演讲传达给更广泛的科学界，这些跨学科的研究结果可以共享。

This project will conduct exploratory biogenic volatile organic compound (BVOC) emission measurements for an Arctic tundra ecosystem with the goals of assessing 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) An initial species characterization campaign will identify dominant Arctic plant species 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 will also be made and used for predictions of how ecosystem BVOC emissions may 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.