Evaluation of high resolution spatio-temporal precipitation extremes from a stochastic weather generator

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Abstract

Spatio-temporal rainfall is modelled for the North-Eastern part of Zealand (Denmark) using the Spatio-Temporal Neyman-Scott Rectangular Pulses model as implemented in the RainSim software. Hourly precipitation series for fitting the model are obtained from a dense network of tipping bucket rain gauges in
the model area. The spatio-temporal performance of the model with respect to precipitation extremes is evaluated in the points of a 2x2 km regular grid covering the full model area. The model satisfactorily reproduces the extreme behaviour of the observed precipitation with respect to event intensity levels and unconditional spatial correlation when evaluated using an event based ranking approach at point scale and an advanced spatio-temporal coupling of extreme events. Prospectively the model can be used as a tool to evaluate the impact of climate change without relying onprecipitation output from climate model modelled
precipitation directly, but merely on the climate change signal derived from climate models.
Original languageEnglish
Publication date2012
Number of pages5
Publication statusPublished - 2012
EventUrbanRain12: 9th International Workshop on Precipitation in Urban Areas - St. Moritz, Switzerland
Duration: 6 Dec 20129 Dec 2012
Conference number: 9

Conference

ConferenceUrbanRain12: 9th International Workshop on Precipitation in Urban Areas
Number9
CountrySwitzerland
CitySt. Moritz
Period06/12/201209/12/2012

Keywords

  • RainSim
  • Spatio-Temporal Neyman-Scott Rectangular Pulses model
  • Weather generator

Cite this

Sørup, H. J. D., Christensen, O. B., Arnbjerg-Nielsen, K., & Mikkelsen, P. S. (2012). Evaluation of high resolution spatio-temporal precipitation extremes from a stochastic weather generator. Paper presented at UrbanRain12: 9th International Workshop on Precipitation in Urban Areas, St. Moritz, Switzerland.