Ocean Model Coupling with Atmospheric Model for Prediction of Radioactivity Contaminant Dispersion in Emergency

Abstract

In order to predict the atmospheric and oceanic dispersion of radionuclides due to a nuclear accident, a coupling model between mesoscale atmosphere and ocean were proposed. And we have carried out several numerical experiments under different atmospheric conditions. The results are summarized as follows: (1) Wind stress transferred through the sea surface does not always have an influence on every area in the ocean, but the influence of wind stress on mean current variation is not negligible, especially over shallow water. (2) Sea surface winds tend to have a greater impact on the dispersion of radioactivity contaminants than normal sea currents. (3) The calculation time for the CPU is about 15% less for this combination system than for systems without the coupling library Stampi.