Insoluble Particles in Greenland Ice: The Background Aerosol Size Distribution and Diatom Concentration

本项目的目的是研究从末次冰盛期到现在的大气环流。将使用的技术包括测量冰川冰芯和格陵兰近期降雪中不溶气溶胶的尺寸分布，以及识别同一冰雪中的海洋或淡水硅藻物种(单细胞藻类化石)。硅藻物种将有助于确定将它们沉积在表面的空气来源。调查还将包括理论研究，以帮助阐明导致沉积在表面的特定尺寸分布的气溶胶的性质。

It is the purpose of this project to study the circulation of the atmosphere from the Last Glacial Maximum to the present. The techniques to be used include the measurement of the size distri- bution of insoluble aerosols in glacial ice cores and recent snow from Greenland and also the identification as to marine or fresh water species of diatoms (fossils of one celled algae) in the same ice and snow. The diatom species will help to determine the source of the air that deposited them on the surface. The investigation will also include theoretical studies to help elucidate the nature of the aerosols that would result in a particular distribution of sizes being deposited on the surface.