Changes between Version 24 and Version 25 of ticket/1593_CNRS9_NOC3_LDF


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Timestamp:
2015-10-03T09:35:44+02:00 (5 years ago)
Author:
gm
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  • ticket/1593_CNRS9_NOC3_LDF

    v24 v25  
    2323---- 
    2424=== Strategy === 
    25 Three steps: 
    26  
    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)''' 
     25Three steps: [[BR]] 
     26 
     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''' 
     
    4646!---------------------------------------------------------------------------------- 
    4747   !                       !  Operator type: 
    48    ln_traldf_lap   =  .true.   !    laplacian operator 
     48   ln_traldf_lap   =  .false.  !    laplacian operator 
    4949   ln_traldf_blp   =  .false.  !  bilaplacian operator 
    5050   !                       !  Direction of action: 
     
    8888/ 
    8989}}} 
    90 [[BR]]- ln_traldf_lap=traldf_blp=0 No lateral diffusion applied on tracers[[BR]]- bi-laplacian eddy coefficient defined as SQRT(bhm)[[BR]]- ah and bh coefficients defined only at u- and v-points.[[BR]]- redesign the management of eddy induced velocity and its associated diagnostics. In particular ldfeiv.F90 and ldfeiv_substitute.h90 has been suppressed (ldf_eiv routine is now included in ldftra.F90) [[BR]]- redesign of space variation of the eddy diffusivity: suppression of: ldftra_substitute.h90  ; ldftra_c1d.h90 , ldftra_c2d.h90 and  ldftra_c3d.h90 (replaced by ldfc1d_c2d.F90) ; ldftra_oce.F90 (now included in ldftra.F90) [[BR]]- remove ldftra_smag.F90 (suppression of smagorinski option)  '''==>>> TO BE re-add in the new framework by someone...[[BR]]'''- suppression of cpp keys : key_ldfslp ; ''key_traldf_c1d ; key_traldf_c2d ; key_traldf_c3d ; ''key_diaeiv ; key_traldf_eiv ; key_traldf_eiv ; key_traldf_ano[[BR]]- suppression of key_esopa in traldf.F90[[BR]]- zpshde.F90 correct an issue with position of optional argument in zps_hde_isf routine 
     90[[BR]]- default value of the namelist: ''no operator chosen'': lln_traldf_lap=traldf_blp=0 No lateral diffusion applied on tracers[[BR]]-  bi-laplacian eddy coefficient defined as SQRT(bhm)[[BR]]- ah and bh coefficients defined only at u- and v-points.[[BR]]- redesign the management of eddy induced velocity and its associated diagnostics. In particular ldfeiv.F90 and ldfeiv_substitute.h90 has been suppressed (ldf_eiv routine is now included in ldftra.F90) [[BR]]- redesign of space variation of the eddy diffusivity: suppression of: ldftra_substitute.h90  ; ldftra_c1d.h90 , ldftra_c2d.h90 and  ldftra_c3d.h90 (replaced by ldfc1d_c2d.F90, a module share with ldftra.F90) ; ldftra_oce.F90 (now included in ldftra.F90) [[BR]]- remove ldftra_smag.F90 (suppression of smagorinski option)  '''==>>> TO BE re-add in the new framework by someone...[[BR]]'''- suppression of cpp keys : key_ldfslp ; ''key_traldf_c1d ; key_traldf_c2d ; key_traldf_c3d ; ''key_diaeiv ; key_traldf_eiv ; key_traldf_eiv ; key_traldf_ano[[BR]]- suppression of key_esopa in traldf.F90[[BR]]- zpshde.F90 correct an issue with position of optional argument in zps_hde_isf routine 
    9191 
    9292''passive tracers''[[BR]]- all changes in the management of diffusive coefficients and operator has been taken into account in TOP 
     
    9494 * '''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 
    9595 
    96 '''II.2 —''' '''Advective trends''' :TRA/traadv....     ===>>> OK see '''revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5770] &  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5771]''' 
    97  
    98 - 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 offers now 2nd and 4th order centered scheme on both horizontal and vertical directions.[[BR]]- UBS offers now in option either a 2nd order FCT or a 4th order COMPACT scheme in the vertical direction[[BR]]- NB in case of 4th order in the vertical, CEN, UBS and FCT use a compact 4th order scheme[[BR]]- key_esopa removed from traadv.F90 
     96'''II.2 —''' '''Advective trends''' :TRA/traadv....     ===>>> OK see '''revision  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5770] &  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5771]   ===>> SETTE OK with revision [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5774] &  [https://forge.ipsl.jussieu.fr/nemo/log/branches/2015/dev_r5721_CNRS9_NOC3_LDF?rev=5737 5775]''' 
     97 
     98 * 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 offers now 2nd and 4th order centered scheme on both horizontal and vertical directions.[[BR]]- UBS offers now in option either a 2nd order FCT or a 4th order COMPACT scheme in the vertical direction[[BR]]- NB in case of 4th order in the vertical, CEN, UBS and FCT use a compact 4th order scheme[[BR]]- key_esopa removed from traadv.F90 
    9999 
    100100 * Surface boundary condition in ISF case has been added in all cases (except 4th order COMPACT scheme which currently don't work with ISF) 
     
    125125 * 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 
    126126 
     127  '''                                                  III. Phasing of viscous trends''' 
     128 
     129'''III.1 —''' '''LDF on dynamics'''  - viscous trends :  ===>>> OK see '''revision  ....     and  .....   with SETTE OK''' 
     130 
     131''operator'': [[BR]]- laplacian operator: re-entrant laplacian for iso-level operators (dynldf_lap);[[BR]]- bilaplacian operator: dynldf_blp.F90 module: use of the re-entrant iso-level laplacian [[BR]]- suppression of traadv_eiv.F90 ; traldf_bilap.F90 ; traldf_bilapg.F90 ;[[BR]]- rotb and rotn arrays suppressed (even from the restart file) [[BR]]- hdivn and hdivb removed from restart too [[BR]]- divcur.F90 becomes divhor and only computes the horizontal divergence 
     132 
     133[[BR]]''lateral mixing coefficient'':[[BR]]- new user interface (namelist) : 
     134 
     135{{{ 
     136!----------------------------------------------------------------------- 
     137&namdyn_ldf    !   lateral diffusion on momentum 
     138!----------------------------------------------------------------------- 
     139   !                       !  Type of the operator : 
     140   !                           !  no diffusion: set ln_dynldf_lap=..._blp=F  
     141   ln_dynldf_lap =  .false.    !    laplacian operator 
     142   ln_dynldf_blp =  .false.    !  bilaplacian operator 
     143   !                       !  Direction of action  : 
     144   ln_dynldf_lev =  .false.    !  iso-level 
     145   ln_dynldf_hor =  .false.    !  horizontal (geopotential) 
     146   ln_dynldf_iso =  .false.    !  iso-neutral 
     147   !                       !  Coefficient 
     148   nn_ahm_ijk_t  = 0           !  space/time variation of eddy coef 
     149   !                                !  =-30  read in eddy_viscosity_3D.nc file 
     150   !                                !  =-20  read in eddy_viscosity_3D.nc file 
     151   !                                !  =  0  constant  
     152   !                                !  = 10  F(k)=c1d 
     153   !                                !  = 20  F(i,j)=F(grid spacing)=c2d 
     154   !                                !  = 30  F(i,j,k)=c2d*c1d 
     155   !                                !  = 31  F(i,j,k)=F(grid spacing and local velocity) 
     156   rn_ahm_0      =  40000.     !  horizontal laplacian eddy viscosity   [m2/s] 
     157   rn_ahm_b      =      0.     !  background eddy viscosity for ldf_iso [m2/s] 
     158   rn_bhm_0      = 1.e+12      !  horizontal bilaplacian eddy viscosity [m4/s] 
     159   ! 
     160   ! Caution in 20 and 30 cases the coefficient have to be given for a 1 degree grid (~111km) 
     161/ 
     162}}} 
     163[[BR]]- default value of the namelist: ''no operator chosen'': ln_dynldf_lap=dyndf_blp=0 No lateral diffusion applied on momentum[[BR]]- create the 2D and 3D ahtu and ahtv file for ORCA_R2      '''===>>>  TO BE DONE for ORCA_R1''' . nn_ahm_ijk_t must be set to -20 or -30 for ORCA2 and ORCA1 (read in a file) [[BR]]- both laplacian and bi-laplacian coef. are always 3D arrays defined at T- and F- points. Bi-laplacian eddy coefficient defined as SQRT(bhm)    '''====>>> TO BE DONE: explore the possibility of u- and v points'''[[BR]]- redesign of space variation of the eddy viscosity: suppression of: ldfdyn_substitute.h90 ; ldfdyn_c1d.h90 , ldfdyn_c2d.h90 and ldfdyn_c3d.h90 (replaced by ldfc1d_c2d.F90, a module share with ldftra.F90) ; ldfdyn_oce.F90 (now included in ldfdyn.F90)[[BR]]- remove ldfdyn_smag.F90 (suppression of smagorinsky option)  '''==>>> TO BE re-add in the new framework by  someone...'''[[BR]]- suppression of key_esopa in traldf.F90 
     164 
     165[[BR]]'''IV. Solve the pending issues''' 
     166 
     167  '''                                                 (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.  [[BR]]'''(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. [[BR]]'''(IV.3)'''    Add a proper coding of Smagorinsky eddy viscosity and diffusivity 
     168 
     169... 
     170 
     171'''remaining to do :''' 
     172 
     173 * '''IV.1 '''In case of variation of the 2D coeff. as a function of the grid size, use a reference to a 1 degree grid size for ah on both tracers and momentum 
     174 * '''IV.2''' management of no-slip boundary condition as fmask no more used in dynvor.F90 .... 
     175 * '''IV.3'''  re-introduce in a consistent way with the re-design LDF if decided... 
    127176 *  
    128  
    129   : 
    130  
    131   '''                                         III. Phasing of viscous trends''' 
    132  
    133 '''   (III.1) LDF on dynamics''' 
    134  
    135  * rotb and rotn arrays suppressed (even from the restart file) [[BR]]- hdivn and hdivb removed from restart too [[BR]]- divcur.F90 becomes divhor and only computes the horizontal divergence 
    136  
    137 ... 
    138  
    139   '''                                        IV. Solve the pending issues''' 
    140  
    141   '''                                        (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. 
    142  
    143 ... 
    144  
    145 '''remaining to do :''' 
    146  
    147  * management of no-slip boundary condition as fmask no more used in dynvor.F90 .... 
    148  * create the 2D ahtu and ahtv file for ORCA_R2 (and also for ORCA_R1) 
    149  * In case of variation of the 2D coeff. as a function of the grid size, use a reference to a 1 degree grid size for ah on both tracers and momentum 
    150  * suppress Smagorinsky option which does not work any more. Can be re-introduce in a consistent way with the re-design LDF if decided... 
    151177 * test with SETTE (especially restartability and reproducibility ) 
    152178 
    153   '''                       V. Finalize the simplification''' 
    154  
    155   '''                       (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'''       ... 
     179 [[BR]] '''  V. Finalize the simplification''' 
     180 
     181  '''                                (V.1) add'''    in NEMOGCM/TOOLS 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]]'''(V.2) create''' the extended coordinates files form ORCA 2°, 1°, and 0.5°. ===>>> Done for ORCA 2° and 1°,  '''                1/2° and 1/4° missing'''                ...[[BR]]'''(V.3) create''' in NEMOGCM/TOOLS directory a program that create the ORCA2 and ORCA1 eddy viscosity''' ????''' 
    156182 
    157183...