Laboratory Studies on the Aqueous Phase Reactivity of Molecular Markers

本项目扩展了该小组以前在大气化学或有机气溶胶方面的工作，通过检查在气溶胶中发现的一系列有机化合物的稳定性和大气寿命，这些化合物通常被用作示踪剂。研究人员将设计、建造和使用一个实验室系统来测试有机示踪化合物的水相反应性，并测试各种候选化合物的反应机制和产物，以评估它们作为区域和天气尺度大气输送的保守示踪剂的相对效用，通过一系列的自然大气气溶胶(如云、雾、和雾霾)和合成的但有代表性的环境气溶胶和试剂有机化合物的混合物。研究结果将对环境受体位点数据的解释，以及这些化合物的远程传输对辐射转移和气候变化的贡献产生重要而广泛的影响。该项目包括通过东道国现有的实验课整合研究和教育的要素，通过研究生支持和基于网络的社区外展为年轻科学家的专业培训做出贡献。

This project extends upon previous work by this group on the atmospheric chemistry or organic aerosols by examining the stability and atmospheric lifetimes of a series of organic compounds found in aerosols and as such commonly used as tracers. The investigators will design, construct and employ a laboratory system for testing aqueous phase reactivity of organic tracer compounds and test a variety of candidate compounds in terms of reaction mechanisms and products in order to evaluate their relative utility as conserved tracers of regional and synoptic scale atmospheric transport through a series of laboratory experiments on natural atmospheric aerosols (such as cloud, fog, and haze) and synthetic yet representative mixtures of ambient aerosol and reagent organic compounds. Results will have important broader impacts for the interpretation of ambient receptor site data, as well as understanding the contribution of long-range transport of these compounds on radiative transfer and climate change. The project includes elements integrating study research and education through existing laboratory classes at the host institution, contributing to professional training of young scientists through graduate student support, and web-based community outreach.