Probabilistic Quantitative Precipitation Forecast for Flood Prediction: An Application
Open Access
- 1 February 2008
- journal article
- Published by American Meteorological Society in Journal of Hydrometeorology
- Vol. 9 (1), 76-95
- https://doi.org/10.1175/2007jhm858.1
Abstract
This paper outlines a methodology to produce probabilistic quantitative precipitation forecasts by means of a dedicated uncertainty processor for weather model output. The uncertainty processor is developed as a component of a Bayesian forecasting system for river flow prediction. In this context the quantitative precipitation forecast is envisaged as a mixed binary–continuous predictand. The processor is applied to the quantitative precipitation forecasts and to precipitation observations covering a 5-yr period, whereby the forecasted and observed relative air humidity are used as ancillary meteorological indicators. The application of the processor to the selected dataset highlights a significantly larger skill of the quantitative precipitation forecast in predicting event occurrence rather than event depth and provides an objective quantification of the forecast uncertainty. The methodology applied here remains restricted to small basins, in which spatial variability of precipitation can be considered negligible. The need for processing the uncertainty induced by spatial variability of rainfall is briefly addressed.Keywords
This publication has 13 references indexed in Scilit:
- Generic probability distribution of rainfall in space: the bivariate modelJournal of Hydrology, 2005
- Hydrologic uncertainty processor for probabilistic river stage forecasting: precipitation-dependent modelJournal of Hydrology, 2001
- The case for probabilistic forecasting in hydrologyJournal of Hydrology, 2001
- Reply [to “Comment on ‘Bayesian theory of probabilistic forecasting via deterministic hydrologic model‘ by Roman Krzysztofowicz”]Water Resources Research, 2001
- Hydrologic uncertainty processor for probabilistic river stage forecastingWater Resources Research, 2000
- Precipitation uncertainty processor for probabilistic river stage forecastingWater Resources Research, 2000
- Bayesian theory of probabilistic forecasting via deterministic hydrologic modelWater Resources Research, 1999
- Probability distributions for flood warning systemsWater Resources Research, 1994
- The future of distributed models: Model calibration and uncertainty predictionHydrological Processes, 1992
- The Use of Model Output Statistics (MOS) in Objective Weather ForecastingJournal of Applied Meteorology, 1972