Changes between Version 1 and Version 2 of ticket/1611_is_oce_cpl


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Timestamp:
2015-10-05T12:18:47+02:00 (5 years ago)
Author:
mathiot
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  • ticket/1611_is_oce_cpl

    v1 v2  
    1313=== Description === 
    1414==== Purpose ==== 
    15 Allow NEMO to restart with a new geometry beneath the ice shelf. This branch allow to test ice sheet/ocean coupling at each restart time step through netcdf file exchange.  
     15Allow NEMO to restart with a new geometry beneath the ice shelf (grounding line migration, i.e advance or retreat as well as calving front migration). This branch allow to test ice sheet/ocean coupling at each restart time step through netcdf file exchange.  
    1616 
    1717==== Limitation ==== 
    1818 * It is not suitable if high frequency coupling is needed. Because the model need to be stop each time you want to couple ocean/ice sheet. 
    19  * It not a conservative method (NEMO is creating/losing volume/mass/salt/heat at the coupling time step if the geometry change) 
     19 * It not a conservative method (NEMO is creating/losing volume/mass/salt/heat at the coupling time step if the geometry change). I.e., under a pur dynamics ice sheet advance, your mean ssh will stay constant. 
    2020 
    2121==== Method ==== 
     
    2727 * 'Wet a column' case: set mask to 1, T/S = MEAN(T(ji+1,jj), T(ji-1,jj), T(ji,jj+1), T(ji,jj-1)) (if no neighbour along i/j axis check along the k axis), SSH unchanged, U/V = 0 
    2828 
    29  An option is available to keep trend due to unconservation of Vol./heat/salt to 0 using what is done for runoff with specified T/S. I.e the location and the amount of extra/loss vol./heat/salt is diagnosed, saved and used to come back to a acceptable level of conservation before the next restart time step. The vol./heat/salt is removed/added as close as possible to the source/sink location using the techniques used in sbcrnf to prescribed a source of volume/heat/salt in the runoff. 
     29 An option is available to keep trend due to unconservation of Vol./heat/salt to 0 using what is done for runoff with specified T/S. I.e the location and the amount of extra/loss vol./heat/salt is diagnosed, saved and used to come back to a acceptable level of conservation before the next restart time step. The vol./heat/salt is removed/added as close as possible to the source/sink location using the techniques used in sbcrnf to prescribed a source of volume/heat/salt in the runoff. This option is only suitable for global ocean modeling. It has only been tested in the ISOMIP+ 3 and 4 experiments during 5 coupling steps. Only 5, because afterward the sea level was going ridiculously high   
     30 
     31 
    3032---- 
    3133=== Testing ===