MOMBA 1.1 - a high-resolution Baltic Sea configuration of GFDL's modular ocean model.

Dietze, Heiner , Löptien, Ulrike and Getzlaff, Klaus (2014) MOMBA 1.1 - a high-resolution Baltic Sea configuration of GFDL's modular ocean model. Open Access Geoscientific Model Development, 7 . pp. 1713-1731. DOI 10.5194/gmd-7-1713-2014.

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Abstract

We present a new coupled ocean-circulation–ice model configuration of the Baltic Sea. The model features, contrary to most existing configurations, a high horizontal resolution of ≈ 1 nautical mile (≈ 1.85 km), which is eddy-resolving over much of the domain. The vertical discretisation comprises a total of 47 vertical levels. Results from a 1987 to 1999 hindcast simulation show that the model's fidelity is competitive. As suggested by a comparison with sea surface temperatures observed from space, this applies especially to near-surface processes. Hence, the configuration is well suited to serve as a nucleus of a fully fledged coupled ocean-circulation–biogeochemical model (which is yet to be developed). A caveat is that the model fails to reproduce major inflow events. We trace this back to spurious vertical circulation patterns at the sills which may well be endemic to high-resolution models based on geopotential coordinates. Further, we present indications that – so far neglected – eddy/wind effects exert significant control on wind-induced up- and downwelling.

Document Type: Article
Additional Information: WOS:000341603900028
Research affiliation: OceanRep > SFB 754 > A2
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
OceanRep > SFB 754 > B1
OceanRep > SFB 754
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.5194/gmd-7-1713-2014
ISSN: 1991-959X
Related URLs:
Projects: SFB754
Date Deposited: 22 Apr 2014 09:26
Last Modified: 23 May 2019 08:44
URI: http://oceanrep.geomar.de/id/eprint/24332

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