Articles | Volume 14, issue 5
Geosci. Model Dev., 14, 2959–2975, 2021
https://doi.org/10.5194/gmd-14-2959-2021
Geosci. Model Dev., 14, 2959–2975, 2021
https://doi.org/10.5194/gmd-14-2959-2021

Development and technical paper 26 May 2021

Development and technical paper | 26 May 2021

A Schwarz iterative method to evaluate ocean–atmosphere coupling schemes: implementation and diagnostics in IPSL-CM6-SW-VLR

Olivier Marti et al.

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Latest update: 23 Jul 2021
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Short summary
State-of-the-art Earth system models, like the ones used in CMIP6, suffer from temporal inconsistencies at the ocean–atmosphere interface. In this study, a mathematically consistent iterative Schwarz method is used as a reference. Its tremendous computational cost makes it unusable for production runs, but it allows us to evaluate the error made when using legacy coupling schemes. The impact on the climate at longer timescales of days to decades is not evaluated.