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Representing the spatial variability of rainfall for input to the G2G distributed flood forecasting model: operational experience from the Flood Forecasting Centre

Price, David; Pilling, Charlie; Robbins, Gavin; Lane, Andy; Boyce, Graeme; Fenwick, Keith; Moore, Robert J.; Coles, Joanne; Harrison, Tim; Van Dijk, Marc. 2012 Representing the spatial variability of rainfall for input to the G2G distributed flood forecasting model: operational experience from the Flood Forecasting Centre. In: Moore, R.J.; Cole, S.J.; Illingworth, A.J., (eds.) Weather Radar and Hydrology, Proc. Exeter Symp., April 2011. International Association of Hydrological Sciences, 532-537. (IAHS Publ., 351).

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Abstract/Summary

Over the year 2010 the Flood Forecasting Centre (FFC) calibrated and implemented a distributed flood forecasting model to support the FFC’s remit to provide flood risk forecasts across England and Wales, UK. The distributed nature of the model, designed to run at 15-min time-steps on a 1 km2 grid, enables the spatial variability of rainfall measurements and forecasts, rather than lumped catchment averages, to be captured. Such a distributed model should therefore benefit greatly from the spatial and temporal resolution afforded by radar observations. Initial results have highlighted the importance of the quality of the gridded rainfall fields and in a number of cases erroneous radar rainfall data have been shown to contribute to poor model performance. It is suggested that gridded datasets of sufficient quality will be best provided by capturing the spatial variability inherent in radar data together with raingauge data in a merged product.

Item Type: Publication - Book Section
Programmes: CEH Topics & Objectives 2009 onwards > Water > WA Topic 3 - Science for Water Management > WA - 3.1 - Develop next generation methods for river flow frequency estimation and forecasting
CEH Sections: Boorman
ISBN: 9781907161261
Additional Information. Not used in RCUK Gateway to Research.:
Additional Keywords: flood forecasting, distributed flood forecasting model, Flood Forecasting Centre, radar, Grid-to-Grid model
NORA Subject Terms: Meteorology and Climatology
Hydrology
Atmospheric Sciences
Date made live: 24 Sep 2012 14:32
URI: http://nora.nerc.ac.uk/id/eprint/19651

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