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Recent progress in modeling imbalance in the atmosphere and ocean

Bruce R. Sutherland1,2,*, Ulrich Achatz3, Colm-cille P. Caulfield4,5, and Jody M. Klymak6,7

  • 1Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
  • 2Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
  • 3Institut fuer Atmosphaere und Umwelt, Goethe-Universitaet Frankfurt, Frankfurt 60438, Germany
  • 4BP Institute, University of Cambridge, Cambridge CB3 0EZ, United Kingdom
  • 5Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, United Kingdom
  • 6School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia V8W 3P6, Canada
  • 7Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8W 3P6, Canada

  • *bruce.sutherland@ualberta.ca
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Phys. Rev. Fluids 4, 010501 – Published 7 January, 2019

DOI: https://doi.org/10.1103/PhysRevFluids.4.010501

Abstract

Imbalance refers to the departure from the large-scale primarily vortical flows in the atmosphere and ocean whose motion is governed by a balance of Coriolis, pressure-gradient, and buoyancy forces and can be described approximately by quasigeostrophic theory or similar balance models. Imbalanced motions are manifest either as fully nonlinear turbulence or as internal gravity waves which can extract energy from these geophysical flows but which can also feed energy back into the flows. Capturing the physics underlying these mechanisms is essential to understanding how energy is transported from large geophysical scales ultimately to microscopic scales, where it is dissipated. In the atmosphere, it is also necessary for understanding momentum transport and its impact upon the mean wind and current speeds. During a February 2018 workshop at the Banff International Research Station (BIRS), atmospheric scientists, physical oceanographers, physicists, and mathematicians gathered to discuss recent progress in understanding these processes through interpretation of observations, numerical simulations, and mathematical modeling. The outcome of this meeting is reported upon here.

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Phys. Rev. Fluids 4, 010501– Published 7 January, 2019
  • Received 30 May 2018
Article part of CHORUS
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