3 rd Swiss Geoscience Meeting, Zürich, 2005 GIS in ice sheet modelling: assessing the impact of topographic uncertainties

• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Ice Sheet
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.584.3175; http://geoscience-meeting.scnatweb.ch/sgm2005/SGM05_abstracts/04_Opportunities_of_GIS/04_PDF/fhebeler_talk.pdf

are an essential tool for assessing and anticipating the impact of global climate change, either through direct GIS-based modelling or through their functions for manipulating, analysing and visualising model in-and output. In this paper, a GIS is used to assess the impact of uncertainty introduced to a large scale environ-mental model by different aspects of topography rep-resentation, namely the accuracy of the used Digital Elevation Model (DEM) and the resampling process necessary to produce topographies suitable as model input. Ice sheet models make an excellent case study for this purpose, as they are an important source of estimates on the reaction of the earth’s ice masses to climate change and its impact on global