Evolution of Polar ice Ocean Systems (EPOS)

  • Participating scientists
  • C. Wang

Project goals

The goal of EPOS is to investigate the interannual and decadal variability of the mairne hydropshere and cryosphere in both hemispheres, using a global coupled ice-ocean model. Specifically, this includes (1) to determine climate-relevant processes in the high-latitude ice-ocean systems, with emphasis on theb effects of sea floor topography on ocean currents, mixing and sea ice, (2) to extract the dominat patterns of interannual and decadal variability from hindcast simualtions of the past decades, and (3) to identify key parameters and regions (particularly necessary for monitoring purposes).


Using the global ice ocean circulation model ORCA05-LIM, we will (1) develop optimal schemes for combining the terrain-following coordinate opation with masking (whch includes comparison with the geopotential model version run at LODyC Paris and IfM Kiel), and (2) add ice shelves and tidal forcing to the model.


Simulation of Northern hemisphere maximum sea
ice cover

Northern hemisphere maximum sea ice cover from a simulation of the global coupled ice ocean system.

Other information

This project is funded by the Univeristy of Helsinki and closely related to the DRAKKAR (global coupled ice ocean modelling) project.