Hydrological field data from a modeller's perspective: Part 1. Diagnostic tests for model structure

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TitleHydrological field data from a modeller's perspective: Part 1. Diagnostic tests for model structure
Publication TypeJournal Article
Year of Publication2011
AuthorsMcMillan, HK, Clark, MP, Bowden, WB, Duncan, M, Woods, RA
JournalHydrological Processes
Volume25
Issue4
Pagination511-522
ISBN Number1099-1085
Accession NumberARC683
Keywordsdiagnostic
Abstract

Hydrological scientists develop perceptual models of the catchments they study, using field measurements and observations to build an understanding of the dominant processes controlling the hydrological response. However, conceptual and numerical models used to simulate catchment behaviour often fail to take advantage of this knowledge. It is common instead to use a pre-defined model structure which can only be fitted to the catchment via parameter calibration. In this article, we suggest an alternative approach where different sources of field data are used to build a synthesis of dominant hydrological processes and hence provide recommendations for representing those processes in a time-stepping simulation model. Using analysis of precipitation, flow and soil moisture data, recommendations are made for a comprehensive set of modelling decisions, including Evapotranspiration (ET) parameterization, vertical drainage threshold and behaviour, depth and water holding capacity of the active soil zone, unsaturated and saturated zone model architecture and deep groundwater flow behaviour. The second article in this two-part series implements those recommendations and tests the capability of different model sub-components to represent the observed hydrological processes. Copyright © 2010 John Wiley & Sons, Ltd.

URLhttp://dx.doi.org/10.1002/hyp.7841
DOI10.1002/hyp.7841
Short TitleHydrological field data from a modeller's perspective: Part 1. Diagnostic tests for model structure