Climate Model Downscaling

Climate models simulate global atmospheric circulation by use of mathematical equations expressing the mass, momentum and energy balance governing the atmosphere and the circulation behaviour of the oceans. These models are derived from the latest advances in fluid dynamics and thermodynamics taking into account chemical interactions. However, these non-linear partial differential equations can only be solved using approximate numerical solutions. These solutions are very sensitive to the correct setting of initial and boundary conditions.

The assessment of possible effects of climate change on river hydrology has been conducted using results from two GCMs both developed by the Max Planck Institute for Meteorology in Hamburg: the ECHAM4/OPYC3 and the ECHAM5/ MPIOM coupled models.

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