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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/gmd-2019-73
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2019-73
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model evaluation paper 04 Jun 2019

Model evaluation paper | 04 Jun 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).

A regional atmosphere-ocean climate system model (CCLMv5.0clm7-NEMOv3.3-NEMOv3.6) over Europe including three marginal seas: on its stability and performance

Cristina Primo1, Fanni D. Kelemen1, Hendrik Feldmann2, and Bodo Ahrens1 Cristina Primo et al.
  • 1Institute for Atmospheric and Environmental Sciences, Goethe University, Frankfurt am Main, Germany
  • 2Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany

Abstract. The frequency of extreme events has changed, having a direct impact on human lives. Regional climate models help us to predict these regional climate changes. This work presents an atmosphere-ocean coupled regional climate system model (RCSM, with the atmospheric component COSMO-CLM and the ocean component NEMO) over the European domain, including three marginal seas: the Mediterranean, the North and the Baltic Seas. To test the model, we evaluate a simulation of more than one hundred years (1900–2009) with a spatial grid resolution of about 25 km. The simulation was nested into a coupled global simulation with the model MPI-ESM, whose ocean temperature and salinity was nudged to an MPI-ESM ocean-ice component forced with the 20th Century Reanalysis (20CR). The evaluation shows the robustness of the RCSM and discusses the added value by the coupled marginal seas over an atmosphere-only simulation. The coupled system runs stable for the complete 20th century and provides a better representation of extreme temperatures compared to the atmosphere-only model. The produced long-term dataset will allow an improved study of extreme events, helping us to better understand the processes leading to meteorological and climate extremes and their prediction.

Cristina Primo et al.
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A regional atmosphere-ocean climate system model over Europe including three marginal seas: on its stability and performance. C. Primo, F. D. Kelemen, H. Feldmann, and B. Ahrens https://doi.org/10.5281/zenodo.2659205

Cristina Primo et al.
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Short summary
The frequency of extreme events has changed, having a direct impact on human lives. Regional climate models help us to predict these regional climate changes. This work presents an atmosphere-ocean coupled regional climate model over the European domain, including three marginal seas: the Mediterranean, the North and the Baltic Seas. We run a simulation for the complete 20th century with a spatial resolution of about 25 km to show that the system runs stable and the benefit of coupling the ocean.
The frequency of extreme events has changed, having a direct impact on human lives. Regional...
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