Comparison of Gauge and MPE Precipitation Data for the Chesapeake Bay Watershed Model
Publication: Journal of Hydrologic Engineering
Volume 19, Issue 5
Abstract
In the interest of assessing an alternative source of precipitation input for the Chesapeake Bay Watershed model, the goal of this study is to compare the next generation weather radar (NEXRAD)-based multisensor precipitation estimator (MPE) with currently available gauge-based precipitation inputs for the model at both point-pixel and spatially aggregated scales. The comparison of gauge-based data with MPE at a point-pixel scale offers insight into how commonly known characteristics of gauge-point data are reflected in the mean areal gauge-based precipitation product. The time and effort for recalibration using MPE can be significantly reduced by strategizing the procedure according to the results of this study. Techniques and findings described here should be of general value for model users to anticipate changes in model parameters and output when moving from gauge-based to MPE precipitation in continuous simulation models.
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Acknowledgments
The authors acknowledge the support of Mr. Joseph Ostrowski and Mr. Edwin Pryor from the Middle Atlantic River Forecast Center for providing NEXRAD XMRG data sets. The authors greatly appreciate two anonymous reviewers for their thorough comments.
References
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Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 19 • Issue 5 • May 2014
Pages: 1042 - 1047
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 5, 2012
Accepted: Jun 6, 2013
Published online: Oct 16, 2013
Discussion open until: Mar 16, 2014
Published in print: May 1, 2014
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