Atmospheric Oxidation: Field and Laboratory Studies of OH, HO2, RO2, OH Reactivity, and Measurement of Ozone Production Sensitivity

羟基自由基是大气中光解产生的主要的大气清洗剂或清道夫物种，对其反应活性的详细了解仍然是大气化学中一个具有挑战性的问题。这项研究建立在早期奖项的成功调查和主题的基础上，将使宾夕法尼亚州立大学的研究人员能够：i)参与计划中的多调查者研究(加利福尼亚州布洛杰特森林)生物排放对OH和Hox化学的影响，ii)开展进一步的实验室研究，旨在了解意想不到的夜间(OH)反应，iii)与其他确定空气中OH浓度的技术相比，继续验证和确认灵敏的激光诱导荧光(LIF)检测方法。

The detailed understanding of the reactivity of the hydroxyl radical (OH) radical, the primary atmospheric ''detergent'' or scavenger species produced photolytically in the atmosphere, remains a challenging problem in atmospheric chemistry. This study builds on successful investigations and themes of an earlier award and will enable Penn State investigators to:i) participate in a planned multi-investigator studies (Blodgett Forest, CA) of the effects of biogenic emissions on OH and HOX chemistry,ii) engage in further laboratory studies directed to understanding an unexpected night time (OH) reactivity,iii) continue their verification and validation of a sensitive laser induced fluorescence (LIF) detection method compared to other techniques for determining the concentration of OH in air.The continuation of these activities will further our understanding of atmospheric oxidation processes in general, including ozone production and the factors controlling the fate of many tropospheric air pollutants.