Chapter
Apr 26, 2012
Effect of Radar-Rainfall Errors on Rainfall-Runoff Modeling
Publication: World Environmental and Water Resources Congress 2007: Restoring Our Natural Habitat
Abstract
Recent years have witnessed significant advances in development of operational radar-rainfall products. These products are desirable for several hydrologic applications such as flood forecasting and rainfall-runoff modeling. It is recognized that radar-rainfall estimates are associated with unknown uncertainties. The nature of these uncertainties and their impact on the prediction accuracy of hydrologic models is not fully understood. The present study presents an analysis of uncertainties of operational radar-rainfall products and how they propagate into rainfall-runoff models. The study uses NWS Multi-sensor Precipitation Estimator (MPE) radar-rainfall products over the Goodwin Creek experimental watershed. Surface rainfall observations from a dense rain gauge network in the watershed are used to analyze error characteristics of radar products. MPE radar data are used as input to a fully distributed hydrologic model (GSSHA) to simulate runoff response during 11 storms recorded in 2002. The study focuses on effect of three different radar error characteristics: systematic error (bias), random error, and temporal and spatial correlations of radar the error filed.
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Published In
World Environmental and Water Resources Congress 2007: Restoring Our Natural Habitat
Pages: 1 - 11
Copyright
© 2007 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Authors
Affiliations
Department of Civil Engineering, University of Louisiana at Lafayette, P.O. Box 42291, Lafayette, LA 70504-2291. E-mail: [email protected]
Ananda V. Aduvala
Department of Civil Engineering, University of Louisiana at Lafayette, P.O. Box 42291, Lafayette, LA 70504-2291
Ehab A. Meselhe
Department of Civil Engineering, University of Louisiana at Lafayette, P.O. Box 42291, Lafayette, LA 70504-2291
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.