Develop multi-category LIM3 sea-ice capabilities in EC-Earth 3

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Name Develop multi-category LIM3 sea-ice capabilities in EC-Earth 3
Description Feature request to support multi-category sea-ice in the IFS component of EC-Earth 3.
Project financing   SNIC
Is active No
Start date 2013-04-01
End date 2013-08-31
EC-Earth combines the atmosphere model IFS with the ocean model NEMO. The sea-ice model LIM3 is part of NEMO. An outstanding feature of LIM3 compared to its predecessor is the ability to represent multiple sea-ice thickness categories. However, this feature can presently not be used to its full extent as IFS only supports a single sea-ice category. To overcome this restriction, the surface scheme of IFS needs some modifications. The exchange between the atmosphere and the underlying surface is already handled in a tiled fashion and therefore new sea-ice tiles can be added in a straightforward way. After including new tiles in IFS, the coupling interfaces of IFS and NEMO need some adjustments to allow the fluxes to be coupled in several sea-ice categories. This work should preferentially be done with NEMO 3.4 where the coupling interface already has been prepared for multi category sea-ice, and with a new and more general coupling interface in IFS that is under development.

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Hamish Struthers (NSC) NSC Application expert Climate research
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