Changes between Version 1 and Version 2 of ticket/1611_is_oce_cpl
- Timestamp:
- 2015-10-05T12:18:47+02:00 (9 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
ticket/1611_is_oce_cpl
v1 v2 13 13 === Description === 14 14 ==== 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.15 Allow 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. 16 16 17 17 ==== Limitation ==== 18 18 * 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. 20 20 21 21 ==== Method ==== … … 27 27 * '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 28 28 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 30 32 ---- 31 33 === Testing ===