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user/ctlod/NewSurfaceModule – NEMO
wiki:user/ctlod/NewSurfaceModule

Version 22 (modified by ctlod, 16 years ago) (diff)

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New Surface Module

We put here description of the work done around this package. Mainly some figures ...etc

CONTEXT:
Experiments: REF_CORE (reference version) & SBC_NEW (new surface module)
Configuration type: Configuration ORCA2_LIM with bulk CORE
"Forcing spefs:" precipitation and snow are monthly value without time interpolation else
it will be different in SBC_NEW and REF_CORE.

In T2X experiences:
In doing the following modifications in both experiments, we are waiting for almost exactly the same results.
# The wind stress ([uv]tau/gtau[xy]) and wind module (zwind_speed_t(:,:)/dUnormt(:,:) at the ocean surface (even
above sea-ice) is forced to be the same in both experiments. (sbcblk_core.F90/flx_core.h90)
# The friction velocity ust2s(:,:) between sea-ice and ocean is also forced to be the same (limdyn.F90)

In FULL experience: done for REF_CORE and SBC_NEW:
We fully relax constrains imposed in T2X experiences, i.e. on stress, frictional velocity and so on ...

In FULL_SDP experience:
similar to FULL but with a strong restoring SSS damping of ~ 787 mm/day correponding to 12 days of time restoring
It is the same time damping as the SST which corresponds to -40 W/m2/K used for SST over a 10 meters ocean water column.
Modifications have been necessary in sbcssr.F90 module such as using the array sdta(:,:) computed in dtasal.F90 to ensure same
SSS damping field in both experiments SBC_NEW and REF_CORE.

In FULL_SDP2 experience:
Still SSS damping term without the ice-dynamics, i.e. ln_limdyn=.FALSE. in the sea-ice namelist.

In FULL_SDP3 experience:
Only for the SBC_NEW code, this time this run is identical to FULL_SDP but in sbcblk_core.F90, the sea-ice velocity ([uv]i_ice()) has been removed in the computation of the wind stress and wind module over sea-ice.
Since the computation is clearly done in a better way now, it could implies important modifications which should be identify.


FULL_SDP Experiences:

Ice thickness in NEW_SBC experience / Year 10
The sea-ice extension in winter seems to be larger in this run than in the REF_CORE one.


Ice thickness in REF_CORE experience / Year 10


Ice thickness in NEW_SBC experience / Year 10: NO SEA-ICE DYNAMICS = ln_limdyn=FALSE


Ice thickness differences between NEW_SBC & REF_CORE experience / Year 10: NO SEA-ICE DYNAMICS = ln_limdyn=FALSE


T24 Experience:

Ice thickness in NEW_SBC experience / Date 11/2000
Image(T24_Icethic_New_Polaire_112000.png, 90%)


Ice thickness differences between NEW_SBC - REF_CORE / Date 11/2000
Image(T24_Icethic_New_T24_Icethic_Ref_Polaire_112000.png, 90%)


SSS differences between NEW_SBC - REF_CORE / Date 11/2000
Image(T24_S_New_T24_S_Ref_112000_Global.png, 90%)


SST differences between NEW_SBC - REF_CORE / Date 11/2000
Image(T24_T_New_T24_T_Ref_112000_Global.png, 90%)


Net heat flux at the sea-ice base differences between NEW_SBC - REF_CORE / Date 11/2000
Image(T24_oceflxb_New_T24_oceflxb_Ref_112000_Global.png, 90%)


EmP differences between NEW_SBC - REF_CORE / Date 11/2000
Image(T24_EmP_New_T24_EmP_Ref_112000_gloabl.png, 90%)


T16 experience

Net heat flux at the sea-ice base differences between NEW_SBC - REF_CORE Image(T16_oceflxb_New_T15_oceflxb_Ref_112000_Global.png, 90%)


SSS differences between NEW_SBC - REF_CORE Image(T16_S_New_T15_S_Ref_112000_Global.png, 90%)


SST differences between NEW_SBC - REF_CORE Image(T16_T_New_T15_T_Ref_112000_Global.png, 90%)


EmP differences between NEW_SBC - REF_CORE Image(T16_EmP_New_T15_EmP_Ref_112000_Global.png, 90%)


Ice Thickness differences between NEW_SBC - REF_CORE Image(T16_Icethic_New_T15_Icethic_Ref_112000_Global.png, 90%)

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