A conservative leapfrog time stepping method

Leclair, Matthieu; Madec, Gurvan. 2009 A conservative leapfrog time stepping method. Ocean Modelling, 30 (2-3). 88-94. 10.1016/j.ocemod.2009.06.006

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Official URL: http://dx.doi.org/10.1016/j.ocemod.2009.06.006

Abstract/Summary

This paper addresses the issue of the non conservation of tracer that occurs when a leapfrog time stepping scheme is used in association with a Robert-Asselin time filter within the framework of a time varying vertical coordinate system. A re-formulation of both the forcing and filtering terms that provides a globally conservative scheme is presented. Local conservation is then achieved when the model levels and subsequently the sea surface height satisfy a local compatibility condition. The properties of the resulting scheme are illustrated by a global coupled ocean–sea ice model based on the Nucleus for European Modelling of the Ocean (NEMO).

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.ocemod.2009.06.006
ISSN:	1463-5003
Additional Keywords:	Leapfrog; Tracer conservation; NEMO
Date made live:	01 Sep 2009 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/167644

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1016/j.ocemod.2009.06.006

ISSN:

1463-5003

Additional Keywords:

Leapfrog; Tracer conservation; NEMO

Date made live:

01 Sep 2009 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/167644