1 | MODULE dynldf |
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2 | !!====================================================================== |
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3 | !! *** MODULE dynldf *** |
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4 | !! Ocean physics: lateral diffusivity trends |
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5 | !!===================================================================== |
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6 | !! History : 2.0 ! 2005-11 (G. Madec) Original code (new step architecture) |
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7 | !! 3.7 ! 2014-01 (F. Lemarie, G. Madec) restructuration/simplification of ahm specification, |
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8 | !! ! add velocity dependent coefficient and optional read in file |
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9 | !!---------------------------------------------------------------------- |
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10 | |
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11 | !!---------------------------------------------------------------------- |
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12 | !! dyn_ldf : update the dynamics trend with the lateral diffusion |
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13 | !! dyn_ldf_init : initialization, namelist read, and parameters control |
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14 | !!---------------------------------------------------------------------- |
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15 | USE oce ! ocean dynamics and tracers |
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16 | USE dom_oce ! ocean space and time domain |
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17 | USE phycst ! physical constants |
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18 | USE ldfdyn ! lateral diffusion: eddy viscosity coef. |
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19 | USE dynldf_lap_blp ! lateral mixing (dyn_ldf_lap & dyn_ldf_blp routines) |
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20 | USE dynldf_iso ! lateral mixing (dyn_ldf_iso routine ) |
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21 | USE trd_oce ! trends: ocean variables |
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22 | USE trddyn ! trend manager: dynamics (trd_dyn routine) |
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23 | ! |
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24 | USE prtctl ! Print control |
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25 | USE in_out_manager ! I/O manager |
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26 | USE lib_mpp ! distribued memory computing library |
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27 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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28 | USE timing ! Timing |
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29 | |
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30 | IMPLICIT NONE |
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31 | PRIVATE |
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32 | |
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33 | PUBLIC dyn_ldf ! called by step module |
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34 | PUBLIC dyn_ldf_init ! called by opa module |
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35 | |
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36 | !!---------------------------------------------------------------------- |
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37 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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38 | !! $Id$ |
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39 | !! Software governed by the CeCILL license (see ./LICENSE) |
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40 | !!---------------------------------------------------------------------- |
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41 | CONTAINS |
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42 | |
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43 | SUBROUTINE dyn_ldf( kt, Kbb, Kmm, puu, pvv, Krhs ) |
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44 | !!---------------------------------------------------------------------- |
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45 | !! *** ROUTINE dyn_ldf *** |
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46 | !! |
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47 | !! ** Purpose : compute the lateral ocean dynamics physics. |
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48 | !!---------------------------------------------------------------------- |
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49 | INTEGER , INTENT( in ) :: kt ! ocean time-step index |
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50 | INTEGER , INTENT( in ) :: Kbb, Kmm, Krhs ! ocean time level indices |
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51 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpt), INTENT(inout) :: puu, pvv ! ocean velocities and RHS of momentum equation |
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52 | ! |
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53 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdu, ztrdv |
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54 | !!---------------------------------------------------------------------- |
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55 | ! |
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56 | IF( ln_timing ) CALL timing_start('dyn_ldf') |
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57 | ! |
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58 | IF( l_trddyn ) THEN ! temporary save of momentum trends |
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59 | ALLOCATE( ztrdu(jpi,jpj,jpk) , ztrdv(jpi,jpj,jpk) ) |
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60 | ztrdu(:,:,:) = puu(:,:,:,Krhs) |
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61 | ztrdv(:,:,:) = pvv(:,:,:,Krhs) |
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62 | ENDIF |
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63 | |
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64 | SELECT CASE ( nldf_dyn ) ! compute lateral mixing trend and add it to the general trend |
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65 | ! |
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66 | CASE ( np_lap ) |
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67 | CALL dyn_ldf_lap( kt, Kbb, Kmm, puu(:,:,:,Kbb), pvv(:,:,:,Kbb), puu(:,:,:,Krhs), pvv(:,:,:,Krhs), 1 ) ! iso-level laplacian |
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68 | CASE ( np_lap_i ) |
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69 | CALL dyn_ldf_iso( kt, Kbb, Kmm, puu, pvv, Krhs ) ! rotated laplacian |
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70 | CASE ( np_blp ) |
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71 | CALL dyn_ldf_blp( kt, Kbb, Kmm, puu(:,:,:,Kbb), pvv(:,:,:,Kbb), puu(:,:,:,Krhs), pvv(:,:,:,Krhs) ) ! iso-level bi-laplacian |
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72 | ! |
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73 | END SELECT |
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74 | |
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75 | IF( l_trddyn ) THEN ! save the horizontal diffusive trends for further diagnostics |
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76 | ztrdu(:,:,:) = puu(:,:,:,Krhs) - ztrdu(:,:,:) |
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77 | ztrdv(:,:,:) = pvv(:,:,:,Krhs) - ztrdv(:,:,:) |
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78 | CALL trd_dyn( ztrdu, ztrdv, jpdyn_ldf, kt, Kmm ) |
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79 | DEALLOCATE ( ztrdu , ztrdv ) |
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80 | ENDIF |
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81 | ! ! print sum trends (used for debugging) |
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82 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=puu(:,:,:,Krhs), clinfo1=' ldf - Ua: ', mask1=umask, & |
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83 | & tab3d_2=pvv(:,:,:,Krhs), clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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84 | ! |
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85 | IF( ln_timing ) CALL timing_stop('dyn_ldf') |
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86 | ! |
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87 | END SUBROUTINE dyn_ldf |
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88 | |
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89 | |
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90 | SUBROUTINE dyn_ldf_init |
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91 | !!---------------------------------------------------------------------- |
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92 | !! *** ROUTINE dyn_ldf_init *** |
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93 | !! |
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94 | !! ** Purpose : initializations of the horizontal ocean dynamics physics |
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95 | !!---------------------------------------------------------------------- |
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96 | ! |
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97 | IF(lwp) THEN !== Namelist print ==! |
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98 | WRITE(numout,*) |
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99 | WRITE(numout,*) 'dyn_ldf_init : Choice of the lateral diffusive operator on dynamics' |
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100 | WRITE(numout,*) '~~~~~~~~~~~~' |
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101 | WRITE(numout,*) ' Namelist namdyn_ldf: already read in ldfdyn module' |
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102 | WRITE(numout,*) ' see ldf_dyn_init report for lateral mixing parameters' |
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103 | WRITE(numout,*) |
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104 | ! |
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105 | SELECT CASE( nldf_dyn ) ! print the choice of operator |
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106 | CASE( np_no_ldf ) ; WRITE(numout,*) ' ==>>> NO lateral viscosity' |
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107 | CASE( np_lap ) ; WRITE(numout,*) ' ==>>> iso-level laplacian operator' |
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108 | CASE( np_lap_i ) ; WRITE(numout,*) ' ==>>> rotated laplacian operator with iso-level background' |
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109 | CASE( np_blp ) ; WRITE(numout,*) ' ==>>> iso-level bi-laplacian operator' |
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110 | END SELECT |
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111 | ENDIF |
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112 | ! |
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113 | END SUBROUTINE dyn_ldf_init |
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114 | |
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115 | !!====================================================================== |
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116 | END MODULE dynldf |
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