Processes Influencing Chemical Species Concentrations in an Aging Snowpack: Application to the Greenland Ice Sheet

该奖项支持一个项目，该项目旨在研究影响格陵兰冰盖中污染物浓度的过程。拟议的工作是在格陵兰第3号进行的研究的继续；一个为期一年的实地抽样方案于1988年8月开始，计划持续到1989年8月。采样计划包括定期收集气溶胶和气体，以及收集新鲜和旧的地表雪。此外，还对气溶胶光散射、凝结核和臭氧进行了实时连续监测。拟议的项目为期一年，以两种方式为染料3计划做出贡献。首先，1989年夏季将在第3区进行有限的雪坑取样。这将允许在不到一年的时间内评估雪在老化过程中化学成分的变化。其次，在染料3计划中收集的气溶胶和雪样本将进行阴离子、阳离子和微量金属的分析。预期这个项目的结果将有助于解释雪坑和冰芯数据，提供关于格陵兰岛的运输和沉积过程的资料。

This award supports a project to examine the processes that affect concentrations of contaminants in the Greenland Ice Sheet. The proposed work represents a continuation of research initiated at Dye 3, Greenland; a one-year field sampling program began there in August 1988 and is scheduled to continue until August 1989. The sampling program includes collection of aerosols and gases at frequent intervals, and collection of fresh and older surface snow. In addition, real-time continuous monitors for aerosol light scattering, condensation nuclei, and ozone have been operating. The proposed project is a one-year effort that contributes to the Dye 3 program in two ways. First, limited snowpit sampling will be conducted during the summer of 1989 at Dye 3. This will permit assessment of the changes in chemical composition of the snow during aging over periods of less than one year. Second, the aerosol and snow samples collected during Dye 3 program will be analyzed for anions, cations and trace metals. It is expected that the results of this project will assist interpretation of snowpit and ice core data, by providing information on the transport and deposition processes in Greenland.