ROW: Uptake and Oxidation For S02 On Snow

雪覆盖了地球表面的许多地方， 一年中的一部分;在经历季节性变化的地区， 融雪后，径流在补给中起着重要的作用 地表水和地下水系统。 然而，积雪， 人为的和“自然的”污染物。 对累积发生 这些物质将在春季融化期间进入水生系统。 的 化学负荷不会逐渐进入水生系统; a 化学负载的相当大的部分是从 在最初的熔化期，包装的底部。 结果是 一些流域接收大量的酸，微量 金属和其他污染物在短时间内。 它 预计这项工作的结果将有助于 对积雪过程的理解，特别是 清除气体和酸性的形成， 积雪 拟议工作的目的是深入了解 形成的物理和化学过程 积雪的酸度 这些实验旨在 调查二氧化硫的掺入和 氧化/还原反应，可以有助于 雪的酸度 在雪中吸附的气体量， 时间的函数和雪中的氧化产物将 通过建模来深入了解 机制等

Snow covers many parts of the earth's surface for a portion of the year; and in areas that experience seasonal snowmelt, the runoff plays an important role in recharging surface water and groundwater systems. Snowpacks, however, accumulate manmade and "natural" pollutants. This accumulated material will enter aquatic systems during spring melt. The chemical load does not enter the aquatic systems gradually; a substantial fraction of the chemical load is released from the base of the pack in the initial melt period. The result is some watersheds receive significant amounts of acids, trace metals, and other contaminants in a short period of time. It is expected that the results of this work will contribute to the understanding of snowpack processes, in particular the scavenging of gases and the formation of acidity in the snowpack. The purpose of the proposed work is to gain insight into the physical and chemical processes involved in the formation of acidity in snowpack. The experiments are designed to investigate the incorporation of sulfur dioxide and the oxidation/reduction reactions that can contribute to the acidity of snow. The amount of gas sorbed on the snow as a function of time and the oxidation products in the snow will be modeled to gain insight as to the chemical and physical mechanisms.