SGER: Coupling of Arctic Atmospheric Chemistry and Tundra Ecophysiology by Biogenic Volatile Organic Compound Fluxes

这一探索性研究小额赠款(SGER)将为测量北极冻土带生态系统中的生物挥发性有机化合物(BVOC)通量提供支持。这些测量将与美国国家科学基金会资助的一个现有项目一起进行，该项目正在研究阿拉斯加图利克湖图利克野外站附近的ImNavait Creek分水岭的营养物质和碳流。实地活动将在冻土带生态系统生长季节的高峰期(7月底/8月初)进行，以便能够使用现有项目的设备直接测量异戊二烯通量。这些测量将补充叶位数据，以获得有关其他BVOC排放的信息，如较高的萜类。由于高纬度变暖，北极冻原生态系统正在经历重大变化，BVOC测量有可能成为这些变化的敏感指标，因为排放严重依赖于生态系统的状态。该项目解决了生态系统中对气候变化非常敏感的大气过程的重要问题，从而将造福社会。该奖项为早期职业科学家提供了一个及时的研究机会。

This Small Grant for Exploratory Research (SGER) will provide support for measurements of biogenic volatile organic compound (BVOC) fluxes in an Arctic tundra ecosystem. These measurements are to be made in conjunction with an existing NSF-funded project that is studying flows of nutrients and carbon at the Imnavait Creek watershed near the Toolik Field Station at Toolik Lake, Alaska. The field campaign is to be conducted at the peak of the tundra ecosystem growing season (late July/early August) to enable direct measurements of the isoprene fluxes using equipment from the existing project. These measurements will be supplemented with leaf level data to gain information about other BVOC emissions such as higher terpenes. Arctic tundra ecosystems are undergoing significant changes due to high latitude warming, and BVOC measurements have the potential to be a sensitive indicator of these changes since emissions depend strongly on the state of the ecosystem.This project addresses important issues regarding atmospheric processes in ecosystems that are very sensitive to climate change, and will thus benefit society. This award supports an early career scientist for a timely research opportunity.