Articles | Volume 13, issue 11
Geosci. Model Dev., 13, 5465–5483, 2020
https://doi.org/10.5194/gmd-13-5465-2020

Special issue: Nucleus for European Modelling of the Ocean - NEMO

Geosci. Model Dev., 13, 5465–5483, 2020
https://doi.org/10.5194/gmd-13-5465-2020

Development and technical paper 10 Nov 2020

Development and technical paper | 10 Nov 2020

Multi-grid algorithm for passive tracer transport in the NEMO ocean circulation model: a case study with the NEMO OGCM (version 3.6)

Clément Bricaud et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Clement Bricaud on behalf of the Authors (15 May 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (24 Aug 2020) by Qiang Wang
AR by Clement Bricaud on behalf of the Authors (08 Sep 2020)  Author's response    Manuscript
ED: Publish as is (26 Sep 2020) by Qiang Wang
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Short summary
In order to reduce the cost of ocean biogeochemical models, a multi-grid approach where ocean dynamics and tracer transport are computed with different spatial resolution has been developed in the NEMO v3.6 OGCM. Different experiments confirm that the spatial resolution of hydrodynamical fields can be coarsened without significantly affecting the resolved passive tracer fields. This approach leads to a factor of 7 reduction of the overhead associated with running a full biogeochemical model.