1. Department of Geography, University of Zurich, Zürich, Switzerland
2. URPP Language and Space, University of Zurich, Zürich, Switzerland
3. Centre for eResearch, University of Auckland, Auckland, New Zealand
4. Department of Geography & Environment, School of Geosciences, University of Aberdeen, Aberdeen, UK
5. Department of Geography and Geology, University of Turku, Turku, Finland