Changes between Version 16 and Version 17 of ticket/1593_CNRS9_NOC3_LDF


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Timestamp:
2015-09-24T10:01:42+02:00 (5 years ago)
Author:
gm
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  • ticket/1593_CNRS9_NOC3_LDF

    v16 v17  
    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] (SETE OK)''' 
     27   
     28  '''                                 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]  (SETE OK)''' 
    2829 
    2930'''   (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 
     
    3132'''   (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]''' 
    3233 
    33   '''                                II. Phasing of the advective/diffusive trends on tracers''' 
     34   
     35  '''                                 II. Phasing of the advective/diffusive trends on tracers''' 
    3436 
    35 '''   (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] ''' 
     37'''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] &  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5760]''' 
    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) 
     
    9294 * '''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 ! 
    9395 
    94 '''(II.1)''' '''Advective trends''' :TRA/traadv....[[BR]][[BR]][[BR]][[BR]] 
     96'''II.1 —''' '''Advective trends''' :TRA/traadv....[[BR]][[BR]]- traadv_muscl2.F90  removed[[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 
    9597 
    96 '''(II.X)''' ..Miscellaneous : [[BR]]- Atmospheric pressure forcing: change to a systematic call of sbc_apr in step.F90 (with or without BDY) and remove its call from sbcmod[[BR]]- remove key_ldftra_smag and associated module (ldftra_smag.F90)[[BR]]- remove key_vectopt_loop from all the code except in domzgr_substitute.h90 (it is an obsolescent feature only adapted to vector computers)[[BR]]- remove all "!CDIR " lines = NEC vector compiler instructions 
     98'''Pending issues''' on TRAADV: [[BR]]- QCK: cross terms are missing. alternate direction should be added.... 
     99 
     100'''(II.X)''' ..Miscellaneous : [[BR]]- Atmospheric pressure forcing: change to a systematic call of sbc_apr in step.F90 (with or without BDY) and remove its call from sbcmod[[BR]]- remove key_ldftra_smag and associated module (ldftra_smag.F90)[[BR]]- remove key_vectopt_loop from all the code except in domzgr_substitute.h90 (it is an obsolescent feature only adapted to vector computers)[[BR]]- remove all "!CDIR " lines = NEC vector compiler instructions 
    97101 
    98102 *  
     
    100104  : 
    101105 
    102   '''                                III. Phasing of viscous trends''' 
     106  '''                                 III. Phasing of viscous trends''' 
    103107 
    104108'''   (III.1) LDF on dynamics''' 
     
    108112... 
    109113 
    110   '''                               IV. Solve the pending issues''' 
     114  '''                                IV. Solve the pending issues''' 
    111115 
    112   '''                               (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. 
     116  '''                                (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. 
    113117 
    114118... 
     
    122126 * test with SETE (especially restartability and reproducibility ) 
    123127 
    124   '''              V. Finalize the simplification''' 
     128  '''               V. Finalize the simplification''' 
    125129 
    126   '''              (V.1) '''              suppression of hard coded reduction of scale factor in some straits for some given ORCA configuration.[[BR]]              '''              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°. 
     130  '''               (V.1) '''               suppression of hard coded reduction of scale factor in some straits for some given ORCA configuration.[[BR]]               '''               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°. 
    127131 
    128132...