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Purves

Fakultäten » Mathematisch-naturwissenschaftliche Fakultät » Geographisches Institut » Geographic Information Science » Prof. Dr. Ross Purves » Purves

Completed research project

Title / Titel Ice sheet modelling, topography and uncertainty (TopIce)
PDF Abstract (PDF, 14 KB)
Summary / Zusammenfassung Ice sheet modelling seeks to improve our understanding of the behaviour of complex dynamic systems through the abstraction of key elements of the ice sheet system. It can allow us to perform experiments that investigate how the system is sensitive to changes in parameters such as climate and bed conditions.Ice sheet models typically run at resolutions of many kilometres and so do not resolve well certain processes which may contribute to model uncertainties. During inception, local topography may be of key importance in identifying locations for ice nucleation. Equally, ablation may take place in a very narrow zone at the boundaries of the ice sheet, where again topography and local feedbacks can add significantly to model uncertainties.

It is proposed to examine these uncertainties through an interdisciplinary project combining knowledge from the environmental modelling field and GIScience (Geographic Information Science). The direct linkage between topography and model uncertainties, and the opportunities afforded by the wide availability of high-resolution topographic data means that an excellent opportunity exists to examine the importance of the representation of topography in ice sheet modelling.
Publications / Publikationen Weitere Informationen
Keywords / Suchbegriffe ice-sheet modelling, topography, uncertainty, GIScience
Project leadership and contacts /
Projektleitung und Kontakte
Dr R.S. Purves (Project Leader) rsp@geo.uzh.ch
Prof. Dr. Robert Weibel weibel@geo.uzh.ch
F. Hebeler fhebeler@geo.uzh.ch
Funding source(s) /
Unterstützt durch
SNF (Personen- und Projektförderung)
 
In collaboration with /
In Zusammenarbeit mit
Dr Nicholas Hulton
Institute of Geography
School of Geosciences
University of Edinburgh
United Kingdom
Duration of Project / Projektdauer Oct 2003 to Oct 2005