Changes between Version 20 and Version 21 of ticket/1593_CNRS9_NOC3_LDF


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Timestamp:
2015-09-30T08:45:47+02:00 (5 years ago)
Author:
gm
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  • ticket/1593_CNRS9_NOC3_LDF

    v20 v21  
    2525Three steps: 
    2626 
    27   '''                                    I. Phasing of horizontal scale factors                         '''          ===>>> OK see '''                       revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737]          '''         + minor correction'''          revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737]     (SETTE OK)''' 
     27  '''                                      I. Phasing of horizontal scale factors                         '''            ===>>> OK see '''                         revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737]            '''           + minor correction'''            revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5737]       (SETTE OK)''' 
    2828 
    2929'''   (I.1)''' standardisation of the name of quantities derived from horizontal scale factors (many modules of NEMO)[[BR]]The chosen names of quantities derived from horizontal scale factors are:[[BR]]- inverse of scale factors : r1_e1t, r1_e2t, r1_e1u, r1_e2u, r1_e1v, r1_e2v, r1_e1f, r1_e2f ;[[BR]]- surfaces and their inverse:    e1e2t, e1e2u , e1e2v, e1e2f  and, r1_e1e2t , r1_e1e2u , r1_e1e2v, r1_e1e2f ;[[BR]]- ratio (used in traldf...) : e2_e1u , e1_e2v(I.1) generalize of the use of surface scale factors ;[[BR]]These quantities are defined in memory in dom_oce.F90, and set to their proper value in domhgr.F90 
     
    3131'''   (I.2)''' add a optional read of surface scale factors at velocity points in coordinate file (domhgr.F90)[[BR]]        The input coordinate file have to include e1e2u and e1e2v in case of reduction of the scale factors in some straits.[[BR]]        When e1u or e2v are reduced in some straits, the surface at u- and v-points remains unchanged.[[BR]]        This allows to suppress the dom_vvl_orca_fix routine from dlmvvl.F90 module.[[BR]]''Note that this change modifies the model results'', as it contains a better handling of reduced strait width (i.e. reduced surface between 2 adjacent U or V points, but unchanged U and V points volume).[[BR]]The implementation performed here is a first step to the full simplification of domhgr.F90. We kept here the hard coded reduction of scale factor in some straits for some given ORCA configuration. [[BR]]A last step (see IV) will be to suppress the hard coded reduction of some scale factor as it will be always given in the coordinates.nc file together with the e1e2u & e1e2v surfaces.  ===>>> OK see '''revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5755]''' 
    3232 
    33   '''                                    II. Phasing of the advective/diffusive trends on tracers''' 
     33  '''                                      II. Phasing of the advective/diffusive trends on tracers''' 
    3434 
    3535'''II.1 —''' '''LDF on tracers''' (both TRA & TRC) - Diffusive trends :    ''' '''===>>> OK see '''revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5758] &  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5759] and  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5760] with SETTE OK''' 
     36 
     37'''       ====>>>> Bug in triad operator TO BE CHECKED'''[[BR]]                            triad operator is neither restartable not repro  in the branche (it was the case in v3.6 stable) 
    3638 
    3739''operator'': [[BR]]- laplacian operator: re-entrant laplacian for iso-level, standard iso-neutral, and triad iso-neutral operators ;[[BR]]- bilaplacian operator: traldf_blp.F90 module: use of the re-entrant laplacian [[BR]]- both standard and triad iso-neutral operators includes  the Method of Stabilizing Correction (Lemarié et al. (2012) which allows bilaplacian along iso-neutral surfaces ;[[BR]]- triad operator: introduce Beckers et al. (2000) compact stencil in the cross-isoneutral direction ; make the triad operator available in TOP[[BR]]- change name:  traldf_iso_grif.F90 becomes traldf_iso_triad.F90[[BR]]- suppression of traadv_eiv.F90 ; traldf_bilap.F90 ; traldf_bilapg.F90 ;[[BR]]- remove the possibility to compute the lateral diffusion from T-S anomalies (key_traldf_ano) 
     
    9092''passive tracers''[[BR]]- all changes in the management of diffusive coefficients and operator has been taken into account in TOP 
    9193 
    92  * '''Pending issues''' : [[BR]]- verify diaptr.F90  : not sure it is OK[[BR]]- add the max grid size in the coordinate file and use it to compute grid dependent diffusivity. This will solve an issue with regional and AGRIF configurations[[BR]]- test all 6 operators.[[BR]]- change default option in the namelist ! [[BR]]- In field_def.xml  add a comment to say where is the routine calling the corresponding iom_put[[BR]]- in the documentation, add a change in the DOCTOR norm: np_ is now a prefix used for PARAMETER 
     94 * '''Pending issues''' : [[BR]]- verify diaptr.F90  : not sure it is OK[[BR]]- add the max grid size in the coordinate file and use it to compute grid dependent diffusivity. This will solve an issue with regional and AGRIF configurations[[BR]]- test all 6 operators.[[BR]]- change default option in the namelist ! [[BR]]- In field_def.xml  add a comment to say where is the routine calling the corresponding iom_put[[BR]]- in the documentation, add a change in the DOCTOR norm: np_ is now a prefix used for PARAMETER 
    9395 
    9496'''II.1 —''' '''Advective trends''' :TRA/traadv....[[BR]][[BR]]- traadv_muscl2.F90  removed[[BR]]- traadv_muscl.F90 renamed traadv_mus.F90[[BR]]- traadv_cen2.F90  replaced by traadv_cen which provides 2nd and 4th order centered scheme on both horizontal and vertical directions.[[BR]]- name TVD has been changed to the more commonly used FCT (Flux Correction Transport)[[BR]]- FCT provides now 2nd and 4th order centered scheme on both horizontal and vertical directions.[[BR]]- NB in case of 4th order in the vertical, both CEN and FCT use a compact 4th order scheme[[BR]]- key_esopa removed from traadv.F90 
     
    121123  : 
    122124 
    123   '''                                    III. Phasing of viscous trends''' 
     125  '''                                      III. Phasing of viscous trends''' 
    124126 
    125127'''   (III.1) LDF on dynamics''' 
     
    129131... 
    130132 
    131   '''                                   IV. Solve the pending issues''' 
    132  
    133   '''                                   (IV.1) '''                  specification of eddy viscosity/diffusivity coefficients in case of grid-size dependency.[[BR]]                  Issue:  define the grid-size dependency in such a way that does not require the Equator being inside the domain.[[BR]]                  Solution: add a scalar in the coordinate file which is equal to the grid-size at the equator even if Equator is not in the domain[[BR]]                  and use this scalar to compute the grid-size dependency of the coefficients. '''                  (IV.2) '''                  specification of lateral friction at the coast.[[BR]]                  Issue:  the different values of fmask at the coast have been removed so that this lateral boundary condition doesn't affect the advective term ('''                  double check that'''                   !). fmask is still used for laplacian and bilaplacian viscosities. Nevertheless, the magnitude of lateral friction depends on the magnitude of ahm (bhm, reap.). It seems better to define this magnitude [[BR]]                  Solution: add a scalar in the coordinate file which is equal to the grid-size at the equator even if Equator is not in the domain[[BR]]                  and use this scalar to compute the grid-size dependency of the coefficients. 
     133  '''                                     IV. Solve the pending issues''' 
     134 
     135  '''                                     (IV.1) '''                    specification of eddy viscosity/diffusivity coefficients in case of grid-size dependency.[[BR]]                    Issue:  define the grid-size dependency in such a way that does not require the Equator being inside the domain.[[BR]]                    Solution: add a scalar in the coordinate file which is equal to the grid-size at the equator even if Equator is not in the domain[[BR]]                    and use this scalar to compute the grid-size dependency of the coefficients. '''                    (IV.2) '''                    specification of lateral friction at the coast.[[BR]]                    Issue:  the different values of fmask at the coast have been removed so that this lateral boundary condition doesn't affect the advective term ('''                    double check that'''                     !). fmask is still used for laplacian and bilaplacian viscosities. Nevertheless, the magnitude of lateral friction depends on the magnitude of ahm (bhm, reap.). It seems better to define this magnitude [[BR]]                    Solution: add a scalar in the coordinate file which is equal to the grid-size at the equator even if Equator is not in the domain[[BR]]                    and use this scalar to compute the grid-size dependency of the coefficients. 
    134136 
    135137... 
     
    143145 * test with SETTE (especially restartability and reproducibility ) 
    144146 
    145   '''                  V. Finalize the simplification''' 
    146  
    147   '''                  (V.1) add'''                   in NEMOGCM/TOOLS a directory a program that read a coordinates.nc file apply a reduction of scale factors in some straits, and create the associated extended coordinates file (coordinates_e1e2u_v.nc).[[BR]]                  create the extended coordinates files form ORCA 2°, 1°, and 0.5°. ===>>> Done for ORCA 2° and 1°,  '''  1/2° and 1/4° missing'''  ... 
     147  '''                    V. Finalize the simplification''' 
     148 
     149  '''                    (V.1) add'''                     in NEMOGCM/TOOLS a directory a program that read a coordinates.nc file apply a reduction of scale factors in some straits, and create the associated extended coordinates file (coordinates_e1e2u_v.nc).[[BR]]                    create the extended coordinates files form ORCA 2°, 1°, and 0.5°. ===>>> Done for ORCA 2° and 1°,  '''    1/2° and 1/4° missing'''    ... 
    148150 
    149151...