caa a22 4500 378879456 CHVBK 20180305123428.0 cr unu---uuuuu 161128e20030801xx s 000 0 eng 10.1515/156939803769210975 doi (NATIONALLICENCE)gruyter-10.1515/156939803769210975 Numerical study of the global ocean equilibrium circulation [Elektronische Daten] [G. I. Marchuk, J. Schröter, V. B. Zalesny] A new version of the global ocean general circulation model with σ -coordinates is presented. The modelled area approximates the whole World ocean basin from the coast of Antarctica to the North Pole. The model is designed for very long integration periods. Accordingly the numerical techniques applied are very efficient, using implicit timestepping and operator splitting methods. The model is driven at the surface by wind-stress and by restoring temperature and salinity to the observed annual cycle. The cyclo-stationary solution of the model is shown to depend on the initial conditions even after many thousand years of integration. Four different solutions are briefly reported in this paper. The existence of multiple equilibria has been reported previously only under mixed boundary conditions. The key mechanismof the multiple equilibria is nonlinear deep convection processes. Numerical experiments show that global mean values of temperature and salinity are rather important parameters affecting the quasi-equilibrium state. Copyright 2003, Walter de Gruyter Marchuk G. I. Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow GSP-1, 119991, Russia aut Schröter J. Alfred-Wegener-Institute, Bremerhaven, Germany aut Zalesny V. B. Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow GSP-1, 119991, Russia aut Russian Journal of Numerical Analysis and Mathematical Modelling Walter de Gruyter 18/4(2003-08-01), 307-335 0927-6467 18:4<307 2003 18 rnam https://doi.org/10.1515/156939803769210975 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/156939803769210975 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marchuk G. I. Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow GSP-1, 119991, Russia aut NATIONALLICENCE 700 1- Schröter J. Alfred-Wegener-Institute, Bremerhaven, Germany aut NATIONALLICENCE 700 1- Zalesny V. B. Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow GSP-1, 119991, Russia aut NATIONALLICENCE 773 0- Russian Journal of Numerical Analysis and Mathematical Modelling Walter de Gruyter 18/4(2003-08-01), 307-335 0927-6467 18:4<307 2003 18 rnam CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter