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Global hydrological model eWaterCycle

Lecturer: Van de Giesen, N.C.
Faculty:Civil Engineering and Geosciences
Type:documentary
Date:2013-03-08
Duration:0:05:48
Keywords: global hydrological model · flood prediction
Rights: (c) 2013 Van de Giesen, N.C.

Abstract

The development of a high resolution global hydrological model has recently been put forward as Grand Challenge for the hydrological community (Wood et al., 2011). In order to ensure proper parameterization of such a model, massive assimilation of remotely sensed data is needed. So far, the hydrological community has not yet made full use of the possibilities that recent trends in the availability of computational power offer. Presently, the only global hydrological model that includes both lateral flow and groundwater, is the PCR-GLOBWB Model, run at Utrecht University (Wada et al, 2010). PCR-GLOBWB presently runs at a relatively coarse spatial grid of 0.5°x0.5°, which is well above the hyper resolution of 100m x 100m envisioned in the Grand Challenge. Even more challenging than the refinement of the grid will be the assimilation of the massive amounts of available satellite data. Updating a global hydrological model with Earth observations will be a major computational challenge that demands close cooperation between ICT and hydrology.

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