Exploring Nighttime Tropospheric Chemistry via Hydrocarbon Measurements

本项目是对农村林区异戊二烯(2-甲基-1，3-丁二烯)夜间化学行为的研究。以前的研究已经观察到这种活性生物源烃在夜间的衰减速度惊人地快。最近的观察表明，这种快速衰变是由夜间出人意料的大量OH自由基引起的。这项研究将使用异戊二烯和几种人为烯烃的塔式和气载测量来检查夜间空气的反应性。这项研究将作为密歇根州佩尔斯顿的氧化剂、光化学、排放和交通研究计划(PROPHET)的一部分进行。

This project is an investigation of the nighttime chemistry of isoprene (2-methyl-1,3-butadiene) in a rural forested area. Previous studies have observed surprisingly rapid nighttime decay of this reactive biogenic hydrocarbon. Recent observations suggest that the rapid decay is caused by unexpectedly large nighttime concentrations of OH radicals. This study will examine the reactivity of nighttime air using tower and airborne measurements of isoprene and several anthropogenic alkenes. This research will be conducted as part of the Program for Research on Oxidants, Photochemistry, Emissions, and Transport (PROPHET) at Pellston, Michigan.