ABSTRACT
Examples of the practical application of GIS to model processes in space through time, rather than to display static snapshots of processes in time, are remarkably rare (Worboys, 1995). However, spatio-temporal modelling of process is a common procedure in the environmental and physical sciences. This chapter describes the application of GIS to a spatio-temporal modelling problem, detailing the practical difficulties in using a ‘pure’ GIS approach. The inadequacies of GIS required the use of a loosely-coupled model utilising both a bespoke GIS and a high level programming language. The example focuses on the modelling of snow drift and discusses methodologies, results and an evaluation of the model. Finally we debate the need for GIS to drive environmental modelling approaches and vice-versa.
