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

Bricaud, Clément; Le Sommer, Julien; Madec, Gurvan; Calone, Christophe; Deshayes, Julie; Ethe, Christian; Chanut, Jérôme; Levy, Marina

doi:https://doi.org/10.5194/gmd-13-5465-2020

Articles | Volume 13, issue 11

https://doi.org/10.5194/gmd-13-5465-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Nucleus for European Modelling of the Ocean - NEMO

https://doi.org/10.5194/gmd-13-5465-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 11

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, Julien Le Sommer, Gurvan Madec, Christophe Calone, Julie Deshayes, Christian Ethe, Jérôme Chanut, and Marina Levy

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Final revised paper (published on 10 Nov 2020)
Preprint (discussion started on 28 Jan 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of “Multi-grid algorithm for passive tracer transport in NEMO ocean circulation model: a case study with NEMO OGCM (version 3.6)” by Bricaud et al.', Anonymous Referee #1, 12 Mar 2020
RC2: 'gmd-2019-341', Sergey Danilov, 20 Mar 2020
AC1: 'Responses to RC1 and RC2', Clement Bricaud, 15 May 2020

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

AR by Clement Bricaud on behalf of the Authors (28 Sep 2020)

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.