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Linking parameters across scales: Subgrid parameterizations and scale dependent hydrological models.

Beven, Keith J. (1995) Linking parameters across scales: Subgrid parameterizations and scale dependent hydrological models. Hydrological Processes, 9 (5-6). pp. 507-525.

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Abstract

It is argued that the aggregation approach towards macroscale hydrological modelling, in which it is assumed that a model applicable at small scales can be applied at larger scales using effective parameter values, is an inadequate approach to the scale problem. It is also unlikely that any general scaling theory can be developed due to the dependence of hydrological systems on historical and geological perturbations. Thus a disaggregation approach to developing scale-dependent models is advocated in which a representation of the distribution of hydrological responses is used to reflect hydrological heterogeneity. An appropriate form of distribution may vary with both scale and environment. Such an approach is dependent on the data available to define and calibrate the chosen subgrid parameterization. A parameterization based on a minimum patch representation is suggested and the problems of identification at the larger scale discussed.

Item Type: Article
Journal or Publication Title: Hydrological Processes
Uncontrolled Keywords: Subgrid parameterization • Scale • Disaggregation • Distribution functions • SVAT • TOPMODEL • Uncertainty Macroscale models
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22235
Deposited By: ep_ss_importer
Deposited On: 10 Feb 2009 16:42
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22235

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