Research Article

A dynamic TOPMODEL

  1. Keith Beven*,
  2. Jim Freer

Article first published online: 11 JUL 2001

DOI: 10.1002/hyp.252

Issue

Hydrological Processes

Hydrological Processes

Special Issue: Hydrology and Biogeochemistry of Forested Catchments

Volume 15, Issue 10, pages 1993–2011, July 2001

Additional Information

How to Cite

Beven, K. and Freer, J. (2001), A dynamic TOPMODEL. Hydrol. Process., 15: 1993–2011. doi: 10.1002/hyp.252

Author Information

  1. Institute of Environmental and Natural Sciences, Lancaster University, Lancaster LA1 4YQ, UK

*Institute of Environmental and Natural Sciences, Lancaster University, Lancaster LA1 4YQ, UK

Publication History

  1. Issue published online: 11 JUL 2001
  2. Article first published online: 11 JUL 2001
  3. Manuscript Accepted: 31 AUG 2000
  4. Manuscript Received: 31 MAY 2000

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Keywords:

  • TOPMODEL;
  • contributing areas;
  • hydrological similarity;
  • Slapton Wood;
  • GLUE

Abstract

A new version of the rainfall-runoff model TOPMODEL is described in which the assumption of a quasi-steady state saturated zone configuration is replaced by a kinematic wave routing of subsurface flow implemented in a way that allows the simulation of dynamically variable upslope contributing areas. The new version retains the idea of a distribution of hydrologically similar points in the catchment but allows more flexibility in the definition of hydrologically similarity. This allows the new version to retain much of the computational efficiency of the original model while still allowing results to be mapped back into the space of the catchment. A comparison is gives of the original and dynamic versions in an application to the Slapton Wood catchment, Devon, UK, within the GLUE methodology. The new version provides results that are a better fit to observed discharges, with improved prediction bounds, and patterns of predicted deficits storage that are qualitatively more consistent with understanding of the responses of this catchment. Copyright © 2001 John Wiley & Sons, Ltd.

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