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2009WP/2009Stream3 (diff) – NEMO

Changes between Version 18 and Version 19 of 2009WP/2009Stream3


Ignore:
Timestamp:
2009-10-20T15:50:05+02:00 (14 years ago)
Author:
sga
Comment:

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Legend:

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  • 2009WP/2009Stream3

    v18 v19  
    5454=== S3.2-b — Revisit of mass and salt fluxes between ice, ocean and air === 
    5555         '''Status :''' on going work (NEMO-Southampton). [[BR]] 
     56         As a consequence of the embedding of sea-ice into the ocean (see S3.2-c), the total mass of salt of the combined sea-ice/ocean system is  
     57         conserved by removing a volume of water from the ocean when ice forms or adding a volume of water when it melts.  When ice forms, salt contained 
     58         in the water is returned to the ocean, less the salt retained in the ice itself.  When ice melts, the salt contained is added back to the ocean.[[BR]] 
    5659 
    5760=== S3.2-c — Embedding sea-ice inside the ocean === 
    5861         '''Status :''' on going work (NEMO-Southampton). [[BR]] 
     62         To improve the coupling between the sea-ice and ocean models, we embed the sea-ice into the ocean by changing the volume of the ocean and  
     63         depressing the ocean interface by a depth equal to the mean ice draft.  The latter is calculated as the water equivalent of the total ice and snow mass in the  
     64         model grid box using in-situ local densities of seawater.  The pressure gradient that takes into account the total weight of sea ice and snow in the top 
     65         model grid box is added to the ocean momentum budget. The vertical coordinate is redefined for the whole water column.[[BR]] 
     66         The above scheme has been implemented and tested in a 100-year long integration of an ORCA2-LIM2 configuration using both linear and non-linear  
     67         free surface options.  It has also been tested for short runs in the ORCA2-LIM3 configurations.  A longer run in ORCA2-LIM3 will take place early in 2010 
     68         and the code committed for the NEMO 3.3 release. 
    5969 
    6070=== S3.2-d — New advection schemes ===