GOSI10: minor changes package

[ukmo-cguiavarch]

Issue to reference all the smaller changes that we plan to implement in GOSI10.

1. Internal wave mixing: implementing the De Lavergne scheme instead of Simmons
2. Wind stress: implementing the current feedback option (Renault et al) instead of the relative wind stress
3. Chlorophyll: using a 2D map climatology instead of constant value ( see https://code.metoffice.gov.uk/trac/gmed/ticket/631 )
4. Remove partial slip from SO package as it is not required with the new bathymetry.
5. Add key_qco (only option at NEMO5) and qco like vvl interp ...

1 and 2 need to be implemented before we upgrade to NEMO5 as it will allow to simplify the GOSI branch as Simmons et al and the relative wind stress are not available in the trunk at NEMO 4.2 and above.

[oceandie]

Should we include the inclusion of key_qco here? ... according to these notes:

We should test the QCO vertical coordinate (key_qco) at v4.2.2 before porting to NEMO 5, as VVL will no longer be available

[ukmo-cguiavarch]

Internal waves mixing De Lavergne et al (2020):

Adam has interpolated the De Lavergne et al (2020) input files for eORCA025 (@4.2) .

The file is available on monsoon: /projects/jmmp/atblak/ancil/eORCA025/zdfiwm_forcing_eORCA025.nc

namelist settings are:
&namzdf_iwm
ln_mevar = .true., ! variable (T) or constant (F) mixing efficiency
ln_tsdiff = .true., ! account for differential T/S mixing (T) or not (F)

cn_dir = './INPUT/' ! root directory for the iwm data location
! ! file name ! frequency (hours) ! variable ! time interp.! clim ! 'yearly'/ ! weights filename ! rotation ! land/sea mask !
! ! ! (if <0 months) ! name ! (logical) ! (T/F) ! 'monthly' ! ! pairing ! filename !
sn_mpb = 'zdfiwm_forcing_eORCA025.nc' , -12. , 'power_bot' , .false. , .true. , 'yearly' , '' , '' , ''
sn_mpc = 'zdfiwm_forcing_eORCA025.nc' , -12. , 'power_cri' , .false. , .true. , 'yearly' , '' , '' , ''
sn_mpn = 'zdfiwm_forcing_eORCA025.nc' , -12. , 'power_nsq' , .false. , .true. , 'yearly' , '' , '' , ''
sn_mps = 'zdfiwm_forcing_eORCA025.nc' , -12. , 'power_sho' , .false. , .true. , 'yearly' , '' , '' , ''
sn_dsb = 'zdfiwm_forcing_eORCA025.nc' , -12. , 'scale_bot' , .false. , .true. , 'yearly' , '' , '' , ''
sn_dsc = 'zdfiwm_forcing_eORCA025.nc' , -12. , 'scale_cri' , .false. , .true. , 'yearly' , '' , '' , ''
/