Impact of the "Symmetric Instability of the Computational Kind" at mesoscale- and submesoscale-permitting resolutions

• Published in: Ocean Modelling
• Main Authors: Ducousso, Nicolas, Le Sommer, J., Molines, J. -M., Bell, M.
• Other Authors: Laboratoire d'Océanographie Physique et Spatiale (LOPS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Université Grenoble Alpes (UGA)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2017
• Subjects: EEN momentum advection scheme; Symmetric Instability of the Computational Kind; Model resolution; Spurious mixing; [SDU]Sciences of the Universe [physics]; Hollingsworth; North Atlantic
• Online Access: https://hal-insu.archives-ouvertes.fr/insu-03682727; https://doi.org/10.1016/j.ocemod.2017.10.006

International audience The energy- and enstrophy-conserving momentum advection scheme (EEN) used over the last 10 years in NEMO is subject to a spurious numerical instability. This instability, referred to as the Symmetric Instability of the Computational Kind (SICK), arises from a discrete imbalanc...