EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Assessing z-level modelling of the ice shelf - ocean boundary layer

Ryan Patmore1, Paul Holland1, and Catherine Vreugdenhil2
Ryan Patmore et al.
  • 1British Antarctic Survey, Polar Oceans, UK (
  • 2University of Cambridge, Cambridge, UK

Ice shelf dynamics play a key role in the climate. Melt-rates along the ice shelf-ocean interface are an important aspect in determining the character of global sea level rise. A representation of ice shelf melt is currently implemented in various z-level General Circulation Models (GCMs) by employing parameterisations of the small scale boundary layer dynamics. However, these parameterisations are strongly dependent on the near boundary flow and at the spatial scales for which GCMs are intended the boundary layer is not well resolved. We investigate the ability of a GCM in representing these small scale boundary effects. This is done using MITgcm in an idealised setting with a sloping ice-ocean interface.

How to cite: Patmore, R., Holland, P., and Vreugdenhil, C.: Assessing z-level modelling of the ice shelf - ocean boundary layer, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-10388,, 2020

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