Assessment of glacier mass balances from small tropical glaciers to the large ice sheet of Greenland

A combination of field work, modeling, and remote sensing was used to determine mass balances for the Quelccaya Ice Cap in Peru and for parts of the Greenland Ice Sheet. A 40-year history of deglaciation on Quelccaya derived from satellite is presented. Automatic Weather Station and snow pit data throughout Greenland were utilized to determine a mass balance profile for the ice sheet which will serve as a baseline for future comparison. Finally, a series of models were tested in west-central Greenland for their ability to accurately simulate measured melt conditions given hourly observations of the surface meteorology. A new analytical melt model, SOSIM, was developed and tested for this study. Archived on Dataverse by Baptiste Vandecrux with approval from Todd Albert ([e-mail]).

本研究结合野外观测、数值模拟与遥感技术，测定了秘鲁奎尔卡亚冰帽（Quelccaya Ice Cap）以及格陵兰冰盖（Greenland Ice Sheet）部分区域的物质平衡（mass balance）。本文呈现了基于卫星数据推导得到的奎尔卡亚冰帽40年冰消退缩历程。研究利用格陵兰全境的自动气象站（Automatic Weather Station）与雪坑观测数据，构建了该冰盖的物质平衡剖面，可作为未来对比研究的基准基线。针对格陵兰中西部区域，本研究测试了多款模型在逐小时地表气象观测数据输入下，对实测融水状况的精准模拟能力。本研究开发并测试了一款新型解析型融雪模型SOSIM。该数据集由Baptiste Vandecrux上传至Dataverse，并经Todd Albert（邮箱：[e-mail]）审核批准后存档。