Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
Model description paper
17 Oct 2012
Review status
This discussion paper is a preprint. It has been under review for the journal Geoscientific Model Development (GMD). The revised manuscript was not accepted.
COSTRICE – three model online coupling using OASIS: problems and solutions
H. T. M. Ho, B. Rockel, H. Kapitza, B. Geyer, and E. Meyer Institute for Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany
Abstract. The coupled system COSTRICE is developed for the first time in order to reproduce the interactions and feedbacks between atmosphere, ocean and sea-ice in a two-way online coupled model system containing three component models for regional climate simulations over Baltic Sea and North Sea regions. The regional climate model CCLM1 is coupled to the regional ocean model TRIMNP1 and the sea ice model CICE1 via the coupler OASIS3. In this study, CCLM is setup with a horizontal grid mesh size of 50 km and 32 vertical atmosphere layers and driven by the 6-h ERA-interim reanalysis data as initial and boundary conditions. TRIMNP is setup with a horizontal grid mesh size of 12.8 km and 50 vertical ocean levels. CICE calculates ice in 5 categories and runs with the same horizontal resolution as TRIMNP but only over the Baltic Sea and the Kattegat Bay of the North Sea. In a two-way online coupling process, CCLM is linked to TRIMNP through sea surface temperature (SST) as lower boundary condition every 3 h and TRIMNP is driven by 1-h atmospheric state variables and fluxes of CCLM. The data exchange processes between TRIMNP and CICE as well as from CCLM to CICE take place with an interval of 3 h. The coupled model is applied in a study for climate simulations over Baltic Sea and North Sea regions in 1997. The coupled system is set up to run in parallel on the super computing system IBM-power 6 at the German Climate Computing Center (DKRZ).

1 See Table A1.

Citation: Ho, H. T. M., Rockel, B., Kapitza, H., Geyer, B., and Meyer, E.: COSTRICE – three model online coupling using OASIS: problems and solutions, Geosci. Model Dev. Discuss.,, 2012.
H. T. M. Ho et al.
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
RC C1010: 'Comments', Anonymous Referee #1, 12 Dec 2012 Printer-friendly Version 
AC C1184: 'Reply to comments of the Anonymous Referee #1', Ha Hagemann, 10 Jan 2013 Printer-friendly Version 
RC C1575: 'Review of COSTRICE paper', Anonymous Referee #2, 20 Mar 2013 Printer-friendly Version 
EC C1653: 'Missing Review', Steve Easterbrook, 26 Aug 2013 Printer-friendly Version 
H. T. M. Ho et al.
H. T. M. Ho et al.


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