Analysis of runoff for the Baltic basin with an integrated Atmospheric-Ocean-Hydrology Model

K.-G. Richter (1) , M. Ebel (1)

1 Consulting Engineers Dr.-Ing. Karl Ludwig

A fully integrated Atmospheric-Ocean-Hydrology Model (BALTIMOS = Baltic Integrated Model System) has been developed using existing model components. Experiment and model design has been adapted to the Baltic basin with a catchment area of approximately 1 750 000 km². A comprehensive model validation has been completed using large meteorological and hydrological measurement database. Comparing the calculated runoff from the integrated and non-integrated model system with measurements for three different representative subbasins and the entire Baltic basin, the effect of the integrated model is described. The results display a good agreement between measured and calculated runoff. The effect of the integrated model is rather negligible looking at computed mean values: There is no significant difference between mean monthly runoff of the integrated and non-integrated model during the year with the exception of spring. There is a delay of one month with regard to peak runoff for the non-integrated model in spring caused by different interactive processes during the melting period.

Domaines: Sciences de la Terre

K.-G. Richter, M. Ebel. Analysis of runoff for the Baltic basin with an integrated Atmospheric-Ocean-Hydrology Model. Advances in Geosciences, 2006, 9, pp.31-37. ⟨hal-00296953⟩