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DTSTART;TZID=Europe/Stockholm:20240604T100300
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UID:submissions.pasc-conference.org_PASC24_sess158_pos109@linklings.com
SUMMARY:P52 - Waveform Relaxation for Atmosphere-Ocean-Sea Ice Coupling in
  the EC-Earth Single Column Model
DESCRIPTION:Poster\n\nValentina Schüller and Philipp Birken (Lund Universi
 ty); Eric Blayo (Université Grenoble Alpes); and Florian Lemarié (INRIA, U
 niversité Grenoble Alpes)\n\nEarth system models and general circulation m
 odels couple many submodels in time and space. As such, numerical errors a
 re introduced at the geometrical interfaces between components. The magnit
 ude of the numerical error in time can be estimated using iterative coupli
 ng algorithms, so-called Schwarz waveform relaxation (SWR). Past studies h
 ave shown significant differences between classical coupling algorithms an
 d SWR solutions in the case of atmosphere-ocean coupling (Marti et al., 20
 21, Lemarié et al., 2014). These studies have not considered the sea ice c
 omponent; the sensitivity of this three-component system to the coupling a
 lgorithm is poorly understood both theoretically and in numerical studies.
  We aim to close this knowledge gap by systematically studying the couplin
 g error of the EC-Earth Atmosphere-Ocean Single Column Model (Hartung et a
 l., 2018). Our poster presents numerical results comparing standard coupli
 ng algorithms with SWR solutions of this coupled atmosphere-ocean-sea ice 
 model.\n\nSession Chair: Iva Kavcic (Met Office)
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