| 1 | MODULE usrdef_zgr |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE usrdef_zgr *** |
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| 4 | !! |
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| 5 | !! === BENCH configuration === |
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| 6 | !! |
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| 7 | !! User defined : vertical coordinate system of a user configuration |
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| 8 | !!====================================================================== |
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| 9 | !! History : 4.0 ! |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! usr_def_zgr : user defined vertical coordinate system |
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| 14 | !! zgr_z : reference 1D z-coordinate |
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| 15 | !! zgr_top_bot: ocean top and bottom level indices |
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| 16 | !! zgr_zco : 3D verticl coordinate in pure z-coordinate case |
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| 17 | !!--------------------------------------------------------------------- |
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| 18 | USE oce ! ocean variables |
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| 19 | USE dom_oce ! ocean domain |
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| 20 | USE phycst ! physical constants |
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| 21 | USE depth_e3 ! depth <=> e3 |
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| 22 | ! |
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| 23 | USE in_out_manager ! I/O manager |
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| 24 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 25 | USE lib_mpp ! distributed memory computing library |
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| 26 | |
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| 27 | IMPLICIT NONE |
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| 28 | PRIVATE |
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| 29 | |
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| 30 | PUBLIC usr_def_zgr ! called by domzgr.F90 |
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| 31 | |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | !! NEMO/OPA 4.0 , NEMO Consortium (2016) |
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| 34 | !! $Id$ |
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| 35 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 36 | !!---------------------------------------------------------------------- |
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| 37 | CONTAINS |
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| 38 | |
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| 39 | SUBROUTINE usr_def_zgr( ld_zco , ld_zps , ld_sco , ld_isfcav, & ! type of vertical coordinate |
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| 40 | & pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d , & ! 1D reference vertical coordinate |
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| 41 | & pdept , pdepw , & ! 3D t & w-points depth |
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| 42 | & pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors |
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| 43 | & pe3w , pe3uw , pe3vw , & ! - - - |
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| 44 | & k_top , k_bot ) ! top & bottom ocean level |
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| 45 | !!--------------------------------------------------------------------- |
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| 46 | !! *** ROUTINE usr_def_zgr *** |
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| 47 | !! |
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| 48 | !! ** Purpose : User defined the vertical coordinates |
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| 49 | !! |
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| 50 | !!---------------------------------------------------------------------- |
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| 51 | LOGICAL , INTENT(out) :: ld_zco, ld_zps, ld_sco ! vertical coordinate flags |
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| 52 | LOGICAL , INTENT(out) :: ld_isfcav ! under iceshelf cavity flag |
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| 53 | REAL(wp), DIMENSION(:) , INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m] |
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| 54 | REAL(wp), DIMENSION(:) , INTENT(out) :: pe3t_1d , pe3w_1d ! 1D grid-point depth [m] |
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| 55 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pdept, pdepw ! grid-point depth [m] |
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| 56 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3t , pe3u , pe3v , pe3f ! vertical scale factors [m] |
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| 57 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3w , pe3uw, pe3vw ! i-scale factors |
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| 58 | INTEGER , DIMENSION(:,:) , INTENT(out) :: k_top, k_bot ! first & last ocean level |
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| 59 | ! |
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| 60 | INTEGER :: inum ! local logical unit |
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| 61 | REAL(WP) :: z_zco, z_zps, z_sco, z_cav |
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| 62 | REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D workspace |
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| 63 | !!---------------------------------------------------------------------- |
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| 64 | ! |
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| 65 | IF(lwp) WRITE(numout,*) |
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| 66 | IF(lwp) WRITE(numout,*) 'usr_def_zgr : BENCH configuration (z-coordinate closed flat box ocean)' |
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| 67 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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| 68 | ! |
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| 69 | ! |
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| 70 | ! type of vertical coordinate |
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| 71 | ! --------------------------- |
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| 72 | ld_zco = .TRUE. ! BENCH case: z-coordinate without ocean cavities |
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| 73 | ld_zps = .FALSE. |
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| 74 | ld_sco = .FALSE. |
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| 75 | ld_isfcav = .FALSE. |
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| 76 | ! |
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| 77 | ! |
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| 78 | ! Build the vertical coordinate system |
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| 79 | ! ------------------------------------ |
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| 80 | CALL zgr_z( pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d ) ! Reference z-coordinate system |
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| 81 | ! |
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| 82 | CALL zgr_msk_top_bot( k_top , k_bot ) ! masked top and bottom ocean t-level indices |
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| 83 | ! |
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| 84 | ! ! z-coordinate (3D arrays) from the 1D z-coord. |
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| 85 | CALL zgr_zco( pdept_1d, pdepw_1d, pe3t_1d, pe3w_1d, & ! in : 1D reference vertical coordinate |
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| 86 | & pdept , pdepw , & ! out : 3D t & w-points depth |
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| 87 | & pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors |
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| 88 | & pe3w , pe3uw , pe3vw ) ! - - - |
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| 89 | ! |
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| 90 | END SUBROUTINE usr_def_zgr |
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| 91 | |
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| 92 | |
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| 93 | SUBROUTINE zgr_z( pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d ) ! 1D reference vertical coordinate |
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| 94 | !!---------------------------------------------------------------------- |
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| 95 | !! *** ROUTINE zgr_z *** |
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| 96 | !! |
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| 97 | !! ** Purpose : set the 1D depth of model levels and the resulting |
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| 98 | !! vertical scale factors. |
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| 99 | !! |
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| 100 | !! ** Method : 1D z-coordinate system (use in all type of coordinate) |
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| 101 | !! The depth of model levels is set from dep(k), an analytical function: |
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| 102 | !! w-level: depw_1d = dep(k) |
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| 103 | !! t-level: dept_1d = dep(k+0.5) |
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| 104 | !! The scale factors are the discrete derivative of the depth: |
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| 105 | !! e3w_1d(jk) = dk[ dept_1d ] |
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| 106 | !! e3t_1d(jk) = dk[ depw_1d ] |
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| 107 | !! with at top and bottom : |
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| 108 | !! e3w_1d( 1 ) = 2 * ( dept_1d( 1 ) - depw_1d( 1 ) ) |
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| 109 | !! e3t_1d(jpk) = 2 * ( dept_1d(jpk) - depw_1d(jpk) ) |
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| 110 | !! The depth are then re-computed from the sum of e3. This ensures |
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| 111 | !! that depths are identical when reading domain configuration file. |
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| 112 | !! Indeed, only e3. are saved in this file, depth are compute by a call |
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| 113 | !! to the e3_to_depth subroutine. |
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| 114 | !! |
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| 115 | !! Here the Madec & Imbard (1996) function is used. |
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| 116 | !! |
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| 117 | !! ** Action : - pdept_1d, pdepw_1d : depth of T- and W-point (m) |
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| 118 | !! - pe3t_1d , pe3w_1d : scale factors at T- and W-levels (m) |
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| 119 | !! |
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| 120 | !! Reference : Marti, Madec & Delecluse, 1992, JGR, 97, No8, 12,763-12,766. |
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| 121 | !! Madec and Imbard, 1996, Clim. Dyn. |
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| 122 | !!---------------------------------------------------------------------- |
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| 123 | REAL(wp), DIMENSION(:) , INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m] |
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| 124 | REAL(wp), DIMENSION(:) , INTENT(out) :: pe3t_1d , pe3w_1d ! 1D vertical scale factors [m] |
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| 125 | ! |
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| 126 | INTEGER :: jk ! dummy loop indices |
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| 127 | REAL(wp) :: zd ! local scalar |
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| 128 | !!---------------------------------------------------------------------- |
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| 129 | ! |
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| 130 | zd = 5000./FLOAT(jpkm1) |
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| 131 | ! |
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| 132 | IF(lwp) THEN ! Parameter print |
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| 133 | WRITE(numout,*) |
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| 134 | WRITE(numout,*) ' zgr_z : Reference vertical z-coordinates ' |
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| 135 | WRITE(numout,*) ' ~~~~~~~' |
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| 136 | WRITE(numout,*) ' BENCH case : uniform vertical grid :' |
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| 137 | WRITE(numout,*) ' with thickness = ', zd |
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| 138 | ENDIF |
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| 139 | |
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| 140 | ! |
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| 141 | ! 1D Reference z-coordinate (using Madec & Imbard 1996 function) |
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| 142 | ! ------------------------- |
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| 143 | ! |
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| 144 | pdepw_1d(1) = 0._wp |
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| 145 | pdept_1d(1) = 0.5_wp * zd |
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| 146 | ! |
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| 147 | DO jk = 2, jpk ! depth at T and W-points |
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| 148 | pdepw_1d(jk) = pdepw_1d(jk-1) + zd |
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| 149 | pdept_1d(jk) = pdept_1d(jk-1) + zd |
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| 150 | END DO |
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| 151 | ! |
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| 152 | ! ! e3t and e3w from depth |
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| 153 | CALL depth_to_e3( pdept_1d, pdepw_1d, pe3t_1d, pe3w_1d ) |
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| 154 | ! |
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| 155 | ! ! recompute depths from SUM(e3) <== needed |
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| 156 | CALL e3_to_depth( pe3t_1d, pe3w_1d, pdept_1d, pdepw_1d ) |
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| 157 | ! |
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| 158 | IF(lwp) THEN ! control print |
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| 159 | WRITE(numout,*) |
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| 160 | WRITE(numout,*) ' Reference 1D z-coordinate depth and scale factors:' |
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| 161 | WRITE(numout, "(9x,' level gdept_1d gdepw_1d e3t_1d e3w_1d ')" ) |
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| 162 | WRITE(numout, "(10x, i4, 4f9.2)" ) ( jk, pdept_1d(jk), pdepw_1d(jk), pe3t_1d(jk), pe3w_1d(jk), jk = 1, jpk ) |
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| 163 | ENDIF |
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| 164 | ! |
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| 165 | END SUBROUTINE zgr_z |
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| 166 | |
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| 167 | |
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| 168 | SUBROUTINE zgr_msk_top_bot( k_top , k_bot ) |
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| 169 | !!---------------------------------------------------------------------- |
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| 170 | !! *** ROUTINE zgr_msk_top_bot *** |
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| 171 | !! |
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| 172 | !! ** Purpose : set the masked top and bottom ocean t-levels |
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| 173 | !! |
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| 174 | !! ** Method : BENCH case = closed flat box ocean without ocean cavities |
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| 175 | !! k_top = 1 except along north, south, east and west boundaries |
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| 176 | !! k_bot = jpk-1 except along north, south, east and west boundaries |
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| 177 | !! |
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| 178 | !! ** Action : - k_top : first wet ocean level index |
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| 179 | !! - k_bot : last wet ocean level index |
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| 180 | !!---------------------------------------------------------------------- |
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| 181 | INTEGER , DIMENSION(:,:), INTENT(out) :: k_top , k_bot ! first & last wet ocean level |
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| 182 | ! |
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| 183 | REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D local workspace |
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| 184 | REAL(wp) :: zmaxlam, zscl |
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| 185 | !!---------------------------------------------------------------------- |
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| 186 | ! |
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| 187 | IF(lwp) WRITE(numout,*) |
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| 188 | IF(lwp) WRITE(numout,*) ' zgr_top_bot : defines the top and bottom wet ocean levels.' |
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| 189 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~' |
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| 190 | IF(lwp) WRITE(numout,*) ' BENCH case : closed flat box ocean without ocean cavities' |
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| 191 | ! |
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| 192 | z2d(:,:) = REAL( jpkm1 , wp ) ! flat bottom |
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| 193 | ! |
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| 194 | ! |
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| 195 | ! BENCH should work without these 2 small islands on the 2 poles of the folding... |
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| 196 | ! -> Comment out these lines if instabilities are too large... |
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| 197 | ! |
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| 198 | |
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| 199 | !!$ IF( c_NFtype == 'T' ) THEN ! add a small island in the upper corners to avoid model instabilities... |
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| 200 | !!$ z2d(mi0( nn_hls):mi1( nn_hls+2 ),mj0(jpjglo-nn_hls-1):mj1(jpjglo-nn_hls+1)) = 0._wp |
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| 201 | !!$ z2d(mi0(jpiglo-nn_hls):mi1(MIN(jpiglo,jpiglo-nn_hls+2)),mj0(jpjglo-nn_hls-1):mj1(jpjglo-nn_hls+1)) = 0._wp |
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| 202 | !!$ z2d(mi0(jpiglo/2 ):mi1( jpiglo/2 +2 ),mj0(jpjglo-nn_hls-1):mj1(jpjglo-nn_hls+1)) = 0._wp |
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| 203 | !!$ ENDIF |
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| 204 | !!$ ! |
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| 205 | IF( c_NFtype == 'F' ) THEN ! Must mask the 2 pivot-points |
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| 206 | z2d(mi0(nn_hls+1):mi1(nn_hls+1),mj0(jpjglo-nn_hls):mj1(jpjglo-nn_hls)) = 0._wp |
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| 207 | z2d(mi0(jpiglo/2):mi1(jpiglo/2),mj0(jpjglo-nn_hls):mj1(jpjglo-nn_hls)) = 0._wp |
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| 208 | ENDIF |
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| 209 | ! |
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| 210 | CALL lbc_lnk( 'usrdef_zgr', z2d, 'T', 1._wp ) ! set surrounding land to zero (closed boundaries) |
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| 211 | ! |
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| 212 | k_bot(:,:) = INT( z2d(:,:) ) ! =jpkm1 over the ocean point, =0 elsewhere |
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| 213 | ! |
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| 214 | k_top(:,:) = MIN( 1 , k_bot(:,:) ) ! = 1 over the ocean point, =0 elsewhere |
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| 215 | ! |
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| 216 | END SUBROUTINE zgr_msk_top_bot |
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| 217 | |
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| 218 | |
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| 219 | SUBROUTINE zgr_zco( pdept_1d, pdepw_1d, pe3t_1d, pe3w_1d, & ! in : 1D reference vertical coordinate |
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| 220 | & pdept , pdepw , & ! out: 3D t & w-points depth |
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| 221 | & pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors |
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| 222 | & pe3w , pe3uw , pe3vw ) ! - - - |
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| 223 | !!---------------------------------------------------------------------- |
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| 224 | !! *** ROUTINE zgr_zco *** |
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| 225 | !! |
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| 226 | !! ** Purpose : define the reference z-coordinate system |
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| 227 | !! |
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| 228 | !! ** Method : set 3D coord. arrays to reference 1D array |
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| 229 | !!---------------------------------------------------------------------- |
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| 230 | REAL(wp), DIMENSION(:) , INTENT(in ) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m] |
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| 231 | REAL(wp), DIMENSION(:) , INTENT(in ) :: pe3t_1d , pe3w_1d ! 1D vertical scale factors [m] |
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| 232 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: pdept, pdepw ! grid-point depth [m] |
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| 233 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: pe3t , pe3u , pe3v , pe3f ! vertical scale factors [m] |
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| 234 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: pe3w , pe3uw, pe3vw ! - - - |
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| 235 | ! |
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| 236 | INTEGER :: jk |
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| 237 | !!---------------------------------------------------------------------- |
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| 238 | ! |
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| 239 | DO jk = 1, jpk |
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| 240 | pdept(:,:,jk) = pdept_1d(jk) |
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| 241 | pdepw(:,:,jk) = pdepw_1d(jk) |
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| 242 | pe3t (:,:,jk) = pe3t_1d (jk) |
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| 243 | pe3u (:,:,jk) = pe3t_1d (jk) |
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| 244 | pe3v (:,:,jk) = pe3t_1d (jk) |
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| 245 | pe3f (:,:,jk) = pe3t_1d (jk) |
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| 246 | pe3w (:,:,jk) = pe3w_1d (jk) |
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| 247 | pe3uw(:,:,jk) = pe3w_1d (jk) |
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| 248 | pe3vw(:,:,jk) = pe3w_1d (jk) |
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| 249 | END DO |
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| 250 | ! |
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| 251 | END SUBROUTINE zgr_zco |
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| 252 | |
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| 253 | !!====================================================================== |
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| 254 | END MODULE usrdef_zgr |
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