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* [Tune NEMO](#tune-nemo)
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* [Tuning config](#tune-nemo-tuning-config)
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* [Set diags](#tune-nemo-set-diags)
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<a name="tune-nemo"></a>
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===============================
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## Tune NEMO
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<a name="tune-nemo-tuning-config"></a>
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========================
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#### Some Tuning for your config
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_VVL_:
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for Variable volume activated (VVL) cases
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* namelist_cfg / &namdom / ln_linssh=.false.
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_tides_:
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to process tides simulation on namelist_cfg:
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* VVL activation
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* variable vertical coordinate / &nam_vvl / *zstar* ln_vvl_zstar = T
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* Hydrostatic pressure gradient option / &namdyn_hpg / ln_hpg_sco = .true. ! s-coordinate (standard jacobian formulation)
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_Miscellaneous_:
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on namelist_cfg:
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* &nambdy if condition "frs" on tracers : cn_tra ='frs' then ln_tra_dmp=False the same for "dyn3d"
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* &nambdy if shortwave inputs frequency <24h then &namsbc / ln_dm2dc = .false.
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* &namsbc section / nn_fsbc = 5 ! frequency of SBC module call ... to develop ...
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* time interpolation ...
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<a name="tune-nemo-set-diags"></a>
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========================
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#### Set diagnostics
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_Trends mld_:
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activation of trends 2D on mixed layer depth (mld) , here the entrainment term of the trend terms is considered as 0
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a) on trdmxl_oce.F : change nn_ctls = 9 (9 niveau environ 10m, depend of your configuration)
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b) cpp key : activate **key_diahth**
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c) on namelist_cfg : &namtrd section /
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ln_tra_trd = .true. ! (T) 3D tracer trend output
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ln_tra_mxl = .true. ! (T) 2D tracer trends averaged over the mixed layer
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d) on the file_def xml file , activate trends mld ==> enable=.TRUE.
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_Tides Diags_:
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activation harmonic analysis of tidal constituents
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a) on namelist_cfg : &nam_diaharm section :
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ln_diaharm = .true. ! Choose tidal harmonic output or not
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nit000_han = NIT000 ! First time step used for harmonic analysis
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nitend_han = NITEND ! Last time step used for harmonic analysis
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nstep_han = 8 ! Time step frequency for harmonic analysis
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tname(1) = 'M2' ! Name of tidal constituents
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tname(2) = 'K1' ! ---
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If time step = 150s , a frequency of 20 min give nstep_han = 8
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b) on the file_def xml file:
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<file id="file0" name_suffix="_grid_harm" description="ocean T grid harmo" >
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<field field_ref="M2x" name="M2x"/>
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<field field_ref="K1x" name="K1x"/>
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<field field_ref="M2x_u" name="M2x_u"/>
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<field field_ref="K1x_u" name="K1x_u"/>
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<field field_ref="M2x_v" name="M2x_v"/>
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<field field_ref="K1x_v" name="K1x_v"/>
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<field field_ref="M2y" name="M2y"/>
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<field field_ref="K1y" name="K1y"/>
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<field field_ref="M2y_u" name="M2y_u"/>
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<field field_ref="K1y_u" name="K1y_u"/>
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<field field_ref="M2y_v" name="M2y_v"/>
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<field field_ref="K1y_v" name="K1y_v"/>
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</file>
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