Beven, Keith J. (1995) Linking parameters across scales: Subgrid parameterizations and scale dependent hydrological models. Hydrological Processes, 9 (5-6). pp. 507-525.Full text not available from this repository.
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.
|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|
|Deposited On:||10 Feb 2009 16:42|
|Last Modified:||26 Jul 2012 15:58|
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