Baltic sub-basin turnover times examined using the Rossby Centre Ocean model.
Not least when judging the possible effects of climate change it proves necessary to estimate the water-renewal rates of limited marine areas subject to pronounced external influences. In connection with the SWECLIM programme this has been undertaken for two ecologically sensitive sub-basins of the Baltic, viz. the Gulf of Riga and Gdansk Bay. For this purpose two methodologically different approaches have been employed, based on mass-balance budgets and analysis of Lagrangian trajectories, respectively. When compared to the results obtained using the Lagrangian technique, the box-model approach proved to be adequate for the Gulf of Riga representing a morphologically highly constrained basin, whereas it demonstrated certain shortcomings when applied to the more open topographic conditions characterizing Gdansk Bay.
Jönsson
Bror
B
Department of Meteorology, Stockholm University, Sweden. bror@misu.su.se
Lundberg
Peter A
PA
Döös
Kristofer
K
D001454:Baltic States; D002980:Climate; D003198:Computer Simulation; D004784:Environmental Monitoring; D005544:Forecasting; D008962:Models, Theoretical; D009792:Oceans and Seas; D012623:Seawater