• this concerns ORCA configuration, at least ORCA025 and ORCA05.
• This problem was raised in ticket #424: We need to have a call to lbc_lnk(emp) ( actually at the end of sbcmod.F90).
• It was once claimed that this was necessary because of input data not previously 'filtered' by a lbc_lnk. Thus the ticket #424 was labeled invalid ...
• Now, we are running with Interpolation On the Fly and we also need this fix, even if we do not really inderstand why !

• If you do not have it, the model blows up in the arctic within 6 months from start.

Hello !

As mentioned by Rachid in his mail presenting nemo_v3_2_1, mixing OBC and AGRIF is supported in this release. I should say 'almost' because there are still some fixes to do.

In this ticket I describe the 5 fixes that I found necessary:

1. obc_par.F90 : PARAMETER attribute should be restored for smooth compilation ...
2. obcdta.F90 : I suggest to use the directives AGRIF_DO_NOT_TREAT to skip the definition of zjcnes_obc, ztobc. It works and looks better than the actual workaround.
3. agrif_user.F90 : In this module lk_obc (and lk_bdy !) is set to false for the child grid. It is a very good idea that greatly simplify the code, but this should be done before the call to opa_init (hence obc_ini).
4. solmat.F90 : In the OBC test, I think that in the actual version, the case OBC + child grid is not treated.
5. traqsr.F90 : The use of agrif directives AGRIF_DO_NOT_TREAT is required to skip some arrays definition.

I have attached the 5 modified modules.

There are 2 other bugs in obc but not linked with agrif and described in next ticket !

Jean-Marc

This ticket relates to the branch devukmo2010, which is a merge of Met Office branches, created for the 2010 merge party and creation of vn3.3

The branch was created by extracting the then head of the trunk (revision 2090). This was merged (using svn merge) with branches; dev_1784_OBS revisions 1782:2074 dev_1784_ASM revisions 1782:2073 dev_r1821_mixed_ldfdyn revisions 1818:1840 DEV_r1986_BDY_updates revisions 1983:2100 DEV_R1821_Rivers revisions 1818:2127