Get 20M+ Full-Text Papers For Less Than $1.50/day. Subscribe now for You or Your Team.

Learn More →

Energy Transfers in Atmosphere and OceanReducing Spurious Diapycnal Mixing in Ocean Models

Energy Transfers in Atmosphere and Ocean: Reducing Spurious Diapycnal Mixing in Ocean Models [Transport algorithms of numerical ocean circulation models are frequently exhibiting truncation errors leading to spurious diapycnal mixing of water masses. This chapter discusses methods that might be useful in diagnosing spurious diapycnal mixing and describes some approaches that might be helpful for its reduction. The first one is related to the use of the Arbitrary Lagrangian Eulerian (ALE) vertical coordinate which allows the implementation of vertically moving meshes that may partly follow the isopycnals even if the basic vertical coordinate differs from isopycnal. The second approach relies on modified advection schemes with the dissipative part of the transport operators directed isopycnally. Finally the third approach deals with new efficient and stable advection algorithms of arbitrary high order based on the WENO-ADER method, which can be applied to both structured and unstructured meshes. While practical benefits of using the reviewed approaches depend on applications, there are indications that equipping present state-of-the-art ocean circulation models with them would lead to reduced spurious transformations.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Energy Transfers in Atmosphere and OceanReducing Spurious Diapycnal Mixing in Ocean Models

Part of the Mathematics of Planet Earth Book Series (volume 1)
Editors: Eden, Carsten; Iske, Armin

Loading next page...
 
/lp/springer-journals/energy-transfers-in-atmosphere-and-ocean-reducing-spurious-diapycnal-P1AS5n09LJ

References (94)

Publisher
Springer International Publishing
Copyright
© Springer Nature Switzerland AG 2019
ISBN
978-3-030-05703-9
Pages
245 –286
DOI
10.1007/978-3-030-05704-6_8
Publisher site
See Chapter on Publisher Site

Abstract

[Transport algorithms of numerical ocean circulation models are frequently exhibiting truncation errors leading to spurious diapycnal mixing of water masses. This chapter discusses methods that might be useful in diagnosing spurious diapycnal mixing and describes some approaches that might be helpful for its reduction. The first one is related to the use of the Arbitrary Lagrangian Eulerian (ALE) vertical coordinate which allows the implementation of vertically moving meshes that may partly follow the isopycnals even if the basic vertical coordinate differs from isopycnal. The second approach relies on modified advection schemes with the dissipative part of the transport operators directed isopycnally. Finally the third approach deals with new efficient and stable advection algorithms of arbitrary high order based on the WENO-ADER method, which can be applied to both structured and unstructured meshes. While practical benefits of using the reviewed approaches depend on applications, there are indications that equipping present state-of-the-art ocean circulation models with them would lead to reduced spurious transformations.]

Published: Jan 24, 2019

There are no references for this article.