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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/gmd-2019-336
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2019-336
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: methods for assessment of models 17 Feb 2020

Submitted as: methods for assessment of models | 17 Feb 2020

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This preprint is currently under review for the journal GMD.

Simple algorithms to compute meridional overturning and barotropic streamfunction on unstructured meshes

Dmitry Sidorenko1, Sergey Danilov1,2,3, Nikolay Koldunov1,4, Patrick Scholz1, and Qiang Wang1 Dmitry Sidorenko et al.
  • 1Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
  • 2Jacobs University, Bremen, Germany
  • 3A. M. Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia
  • 4MARUM – Center for Marine Environmental Sciences, Bremen, Germany

Abstract. Computation of barotropic and meridional overturning streamfunctions for models formulated on unstructured meshes is commonly preceded by interpolation to a regular mesh. This operation destroys the original conservation which can be then artificially imposed to make the computation possible. An elementary method is proposed that avoids interpolation and preserves conservation in a strict model sense. The method is described as applied to the discretization of the Finite volumE Sea ice -- Ocean Model (FESOM2) on triangular meshes. It however is generalizable to collocated vertex based discretization on triangular meshes and to both triangular and hexagonal C-grid discretizations.

Dmitry Sidorenko et al.

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Status: open (until 13 Apr 2020)
Status: open (until 13 Apr 2020)
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Dmitry Sidorenko et al.

Dmitry Sidorenko et al.

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Latest update: 09 Apr 2020
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