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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Cited articles

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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.