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001     521551
005     20240927184137.0
024 7 _ |a G:(GEPRIS)191683119
|d 191683119
035 _ _ |a G:(GEPRIS)191683119
040 _ _ |a GEPRIS
|c http://gepris.its.kfa-juelich.de
150 _ _ |a Parameterisation of meso-scale mixing in the ocean
|y 2011 - 2017
371 _ _ |a Professor Dr. Carsten Eden
450 _ _ |a DFG project G:(GEPRIS)191683119
|w d
|y 2011 - 2017
510 1 _ |a Deutsche Forschungsgemeinschaft
|0 I:(DE-588b)2007744-0
|b DFG
680 _ _ |a Ocean models which do not resolve the energetic meso-scale eddy field have to parameterise its effects on the large-scale circulation. This effect is for instance important in western boundary currents, where meso-scale eddies balances the planetary vorticity change, and in the Southern Ocean where they control both the zonal ow and the meridional overturning circulation. Further, meso-scale eddies are important for the ventilation of the interior ocean with dissolved gases. In current ocean climate models, a constant lateral diffusivity K appropriate to the Gent and McWilliams (1990) parameterisation is used. However, a constant diffusivity K is inadequate for climate change simulations and decadal climate predictions, since K does vary both in time and in space. We propose to advance the current meso-scale eddy parameterisation in ocean climate models by applying and improving a mixing length approach for K, based on an eddy kinetic energy (EKE) budget, an eddy length scale and a vertical structure function. The parameters in the EKE budget and the structure function will be estimated using a global ocean model and its adjoint constraining the model and the closure to observational estimates.
909 C O |o oai:juser.fz-juelich.de:947282
|p authority:GRANT
|p authority
909 C O |o oai:juser.fz-juelich.de:947282
980 _ _ |a G
980 _ _ |a AUTHORITY

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