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TOPAZ4: development and pan
Francois Counillon; Laurent Bertino
NERSC/ Mohn-Sverdrup Center
(Abstract received 05/08/2009 for session X)
ABSTRACT
In the frame of the European MyOcean project (www.myocean.eu.org), NERSC is preparing a newer version of the TOPAZ system entitled TOPAZ4 in order to process a 20-years reanalysis. TOPAZ is a data assimilative system using the Enemble Kalman Filter (EnKF), which covers the North Atlantic and the Arctic basins with a resolution of about 11-16 km. The model has been upgraded to the newest 2.2.18 HYCOM version, with additional features in the NERSC multi-category ice model, and river run-off based on a hydrological model (TRIP). Other efforts focus on the assimilation, with the use of the Asynchronous-EnKF capable of making an optimal use of satellite track data, and in assimilating new data, e.g. Ferry-box data, high-resolution SST, sea ice drift, T-S profiles, ice thickness … Finally ongoing efforts are directed towards the assimilation of ocean color data in the coupled HYCOM-NORWECOM model.
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2009 LOM Workshop, Miami, Florida Jume 1 - 3, 2009