Articles | Volume 17, issue 2
Research article
13 Apr 2021
Research article |  | 13 Apr 2021

Spatiotemporal structure of Baltic free sea level oscillations in barotropic and baroclinic conditions from hydrodynamic modelling

Eugeny A. Zakharchuk, Natalia Tikhonova, Elena Zakharova, and Alexei V. Kouraev

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Cited articles

Assessment of Climate Change for the Baltic Sea Basin: Regional Climate Studies ISSN, edited by: Bolle, H.-J., Menenti, M., and Rasool, I., Springer-Verlag Berlin Heidelberg, 118 pp., 2008. 
Barbosa, S. M. and Donner, R. V.: Long-term changes in the seasonality of Baltic sea level, Tellus A, 68, 13 pp.,, 2016. 
Briegleb, B., Bitz, C., Hunke, E., Lipscomb, W., Holland, M., Schramm, J., and Moritz, R.: Scientific description of the sea ice component in the Community Climate System Model, Boulder, Colorado, Version 3 (No. NCAR/TN-463+STR), University Corporation for Atmospheric Research,, 2004. 
Brydon, D., Sun, S., and Bleck, R.: A new approximation of the equation of state for seawater, suitable for numerical ocean models, J. Geophys. Res.-Oceans, 104, 1537–1540,, 1999. 
Short summary
Investigation of free sea level oscillations is important for understanding of specifics of oceanographic processes and for their identification. Based on numerical experiments with the 3-D INMOM hydrodynamic model, we demonstrated that after cessation of atmospheric forcing, the water masses of the Baltic Sea return to equilibrium state as in the form of barotropic progressive–standing waves with 13–44 h periods, as in the form of baroclinic low-frequency waves with periods of 89 and 358 d.