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TOPMODEL : a critique.

Research output: Contribution to journalJournal article

<mark>Journal publication date</mark>07/1997
<mark>Journal</mark>Hydrological Processes
Issue number9
Number of pages18
Pages (from-to)1069-1086
<mark>Original language</mark>English


TOPMODEL (a TOPography based hydrological MODEL) is now 20 years old and has been the subject of numerous applications to a wide variety of catchments. This paper represents a critical review of some of the issues involved in application of the TOPMODEL concepts, including the basic assumptions involved; the derivation of topographic index distributions from digital terrain data; additional model components; meaning and calibration of the model parameters; and issues involved in model validation and predictive uncertainty. The aim is to provoke a thoughtful approach to hydrological modelling and the interaction of modelling and field work. Some recommendations are made for future modelling practice.