Modelling ice conditions in the easternmost Gulf of Finland in the Baltic Sea |
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| Authors: | Vladimir Ryabchenko Anton Dvornikov Jari Haapala Kai Myrberg |
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| Institution: | 1. St. Petersburg Branch, P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, 30, 1 Liniya, Vasilievskiy Ostrov, 199053 St. Petersburg, Russia;2. Finnish Meteorological Institute, P.O. Box 503, Helsinki, Finland;3. Finnish Environment Institute/Marine Research Centre, P.O. Box 140, Helsinki, Finland |
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| Abstract: | To model ice conditions in the eastern Gulf of Finland, a high-resolution three-dimensional hydrodynamic model is coupled with the advanced sea-ice model HELMI (Haapala et al., 2005). To test the model in extreme situations, the ice pattern in the eastern Gulf of Finland was simulated for a mild ice winter (2007–2008) and for a moderate one (2003–2004). The reference runs were performed on the assumption that the ice in the model domain is fast ice if the sea depth is less than 10 m. Using this assumption, the ice thickness averaged over the Neva Bay (the easternmost part of the Gulf of Finland) is overestimated by the model for almost the entire wintertime in the mild winter and during the ice formation and melting periods in the moderate winter, as compared with the thickness reported in ice charts. |
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| Keywords: | Sea ice Snow on ice Modelling River discharge Gulf of Finland Neva Bay |
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