A Laboratory Investigation of Chemical and Electrical Impurity Effects in Ice Pertinent to Atmospheric and Paleoclimatic Research

本研究的目的是电化学 气溶胶对大气冰粒的影响， 气. 主要感兴趣的是碳，氮， 和硫在对流层中很常见 它们的影响可能 影响电性大气过程（雷暴）。 他们 也会在保存于 冰川和极地冰盖。 溶质的实验室测量 冰和水之间的分隔将产生关于机制的数据， 哪些环境物种被从大气中移除。 对实验室培育的冰标本进行电气测量， 将杂质效应与可以使用的诊断参数相关联 在量化电导和分析冰芯方面 测井曲线 特别值得关注的是表面的性质 冰的导电性以及它如何受到特定杂质的影响。 表面载流子的光化学产生将通过 用近紫外光或可见光照射样品， 电测正在进行中。

The objectives of this research are the electrochemical effects exerted on atmospheric ice particles by aerosols and gases. Of primary interest are compounds of carbon, nitrogen, and sulfur common in the troposphere. Their effects can influence electrical atmospheric processes (thunderstorms). They also leave their imprint on the paleoclimatic record conserved in glaciers and polar ice caps. Laboratory measurements of solute partition between ice and water will yield data on mechanisms by which environmental species are removed from the atmosphere. Electrical measurements on laboratory-grown ice specimens will relate impurity effects to diagnostic parameters that may be used in quantifying electrical conduction and in analyzing ice-core logging curves. Of special concern is the nature of surface conduction in ice and how it is affected by specific impurities. The photochemical creation of surface carriers will be probed by illumination of the sample with near-uv or visible light while electrical measurements are in progress.//