Articles | Volume 19, issue 1
Research article
07 Jan 2015
Research article |  | 07 Jan 2015

High-resolution global topographic index values for use in large-scale hydrological modelling

T. R. Marthews, S. J. Dadson, B. Lehner, S. Abele, and N. Gedney


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Short summary
Modelling land surface water flow is of critical importance in the context of climate change predictions. Many approaches are based on the popular hydrology model TOPMODEL, and the most important parameter of this model is the well-known topographic index. Here we present new, higher-resolution parameter maps of the topographic index, which are ideal for land surface modelling applications and show important improvements on the previous standard maps from HYDRO1k.