| 1 | MODULE tranpc |
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| 2 | !!============================================================================== |
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| 3 | !! *** MODULE tranpc *** |
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| 4 | !! Ocean active tracers: non penetrative convection scheme |
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| 5 | !!============================================================================== |
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| 6 | |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! tra_npc : apply the non penetrative convection scheme |
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| 9 | !! tra_npc_init : initialization and control of the scheme |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! * Modules used |
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| 12 | USE oce ! ocean dynamics and active tracers |
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| 13 | USE dom_oce ! ocean space and time domain |
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| 14 | USE trdmod ! ocean active tracer trends |
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| 15 | USE trdmod_oce ! ocean variables trends |
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| 16 | USE eosbn2 ! equation of state (eos routine) |
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| 17 | USE lbclnk ! lateral boundary conditions (or mpp link) |
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| 18 | USE in_out_manager ! I/O manager |
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| 19 | |
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| 20 | IMPLICIT NONE |
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| 21 | PRIVATE |
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| 22 | |
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| 23 | !! * Routine accessibility |
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| 24 | PUBLIC tra_npc ! routine called by step.F90 |
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| 25 | |
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| 26 | !! * Module variable |
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| 27 | INTEGER :: & |
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| 28 | nnpc1 = 1, & ! nnpc1 non penetrative convective scheme frequency |
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| 29 | nnpc2 = 15 ! nnpc2 non penetrative convective scheme print frequency |
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| 30 | |
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| 31 | !! * Substitutions |
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| 32 | # include "domzgr_substitute.h90" |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | !! OPA 9.0 , LODYC-IPSL (2003) |
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| 35 | !!---------------------------------------------------------------------- |
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| 36 | |
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| 37 | CONTAINS |
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| 38 | |
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| 39 | SUBROUTINE tra_npc( kt ) |
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| 40 | !!---------------------------------------------------------------------- |
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| 41 | !! *** ROUTINE tranpc *** |
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| 42 | !! |
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| 43 | !! ** Purpose : Non penetrative convective adjustment scheme. solve |
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| 44 | !! the static instability of the water column (now, after the swap) |
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| 45 | !! while conserving heat and salt contents. |
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| 46 | !! |
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| 47 | !! ** Method : The algorithm used converges in a maximium of jpk |
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| 48 | !! iterations. instabilities are treated when the vertical density |
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| 49 | !! gradient is less than 1.e-5. |
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| 50 | !! |
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| 51 | !! 'key_trdtra' defined: the trend associated with this |
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| 52 | !! algorithm is saved. |
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| 53 | !! |
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| 54 | !! macro-tasked on vertical slab (jj-loop) |
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| 55 | !! |
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| 56 | !! ** Action : - (tn,sn) after the application od the npc scheme |
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| 57 | !! - save the associated trends (ttrd,strd) ('key_trdtra') |
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| 58 | !! |
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| 59 | !! References : |
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| 60 | !! Madec, et al., 1991, JPO, 21, 9, 1349-1371. |
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| 61 | !! |
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| 62 | !! History : |
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| 63 | !! 1.0 ! 90-09 (G. Madec) Original code |
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| 64 | !! ! 91-11 (G. Madec) |
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| 65 | !! ! 92-06 (M. Imbard) periodic conditions on t and s |
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| 66 | !! ! 93-03 (M. Guyon) symetrical conditions |
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| 67 | !! ! 96-01 (G. Madec) statement function for e3 |
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| 68 | !! suppression of common work arrays |
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| 69 | !! 8.5 ! 02-06 (G. Madec) free form F90 |
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| 70 | !! 9.0 ! 04-08 (C. Talandier) New trends organization |
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| 71 | !!---------------------------------------------------------------------- |
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| 72 | !! * Modules used |
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| 73 | USE oce, ONLY : ztdta => ua, & ! use ua as 3D workspace |
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| 74 | ztdsa => va ! use va as 3D workspace |
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| 75 | |
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| 76 | !! * Arguments |
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| 77 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 78 | |
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| 79 | !! * Local declarations |
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| 80 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 81 | INTEGER :: & |
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| 82 | inpcc , & ! number of statically instable water column |
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| 83 | inpci , & ! number of iteration for npc scheme |
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| 84 | jiter, jkdown, jkp, & ! ??? |
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| 85 | ikbot, ik, ikup, ikdown ! ??? |
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| 86 | REAL(wp) :: & ! temporary arrays |
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| 87 | ze3tot, zta, zsa, zraua, ze3dwn |
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| 88 | REAL(wp), DIMENSION(jpi,jpk) :: & |
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| 89 | zwx, zwy, zwz ! temporary arrays |
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| 90 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & |
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| 91 | zrhop ! temporary arrays |
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| 92 | !!---------------------------------------------------------------------- |
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| 93 | |
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| 94 | IF( kt == nit000 ) CALL tra_npc_init |
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| 95 | |
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| 96 | |
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| 97 | IF( MOD( kt, nnpc1 ) == 0 ) THEN |
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| 98 | |
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| 99 | inpcc = 0 |
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| 100 | inpci = 0 |
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| 101 | |
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| 102 | ! 0. Potential density |
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| 103 | ! -------------------- |
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| 104 | |
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| 105 | CALL eos( tn, sn, rhd, zrhop ) |
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| 106 | |
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| 107 | ! Save tn and sn trends |
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| 108 | IF( l_trdtra ) THEN |
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| 109 | ztdta(:,:,:) = tn(:,:,:) |
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| 110 | ztdsa(:,:,:) = sn(:,:,:) |
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| 111 | ENDIF |
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| 112 | |
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| 113 | ! ! =============== |
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| 114 | DO jj = 1, jpj ! Vertical slab |
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| 115 | ! ! =============== |
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| 116 | |
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| 117 | ! 1. Static instability pointer |
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| 118 | ! ----------------------------- |
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| 119 | |
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| 120 | DO jk = 1, jpkm1 |
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| 121 | DO ji = 1, jpi |
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| 122 | zwx(ji,jk) = ( zrhop(ji,jj,jk) - zrhop(ji,jj,jk+1) ) * tmask(ji,jj,jk+1) |
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| 123 | END DO |
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| 124 | END DO |
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| 125 | |
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| 126 | ! 1.1 do not consider the boundary points |
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| 127 | |
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| 128 | ! even if east-west cyclic b. c. do not considere ji=1 or jpi |
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| 129 | DO jk = 1, jpkm1 |
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| 130 | zwx( 1 ,jk) = 0.e0 |
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| 131 | zwx(jpi,jk) = 0.e0 |
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| 132 | END DO |
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| 133 | ! even if south-symmetric b. c. used, do not considere jj=1 |
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| 134 | IF( jj == 1 ) zwx(:,:) = 0.e0 |
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| 135 | |
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| 136 | DO jk = 1, jpkm1 |
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| 137 | DO ji = 1, jpi |
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| 138 | zwx(ji,jk) = 1. |
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| 139 | IF( zwx(ji,jk) < 1.e-5 ) zwx(ji,jk)=0. |
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| 140 | END DO |
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| 141 | END DO |
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| 142 | |
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| 143 | zwy(:,1) = 0. |
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| 144 | DO ji = 1, jpi |
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| 145 | DO jk = 1, jpkm1 |
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| 146 | zwy(ji,1) = zwy(ji,1) + zwx(ji,jk) |
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| 147 | END DO |
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| 148 | END DO |
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| 149 | |
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| 150 | zwz(1,1) = 0. |
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| 151 | DO ji = 1, jpi |
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| 152 | zwz(1,1) = zwz(1,1) + zwy(ji,1) |
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| 153 | END DO |
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| 154 | |
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| 155 | inpcc = inpcc + NINT( zwz(1,1) ) |
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| 156 | |
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| 157 | |
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| 158 | ! 2. Vertical mixing for each instable portion of the density profil |
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| 159 | ! ------------------------------------------------------------------ |
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| 160 | |
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| 161 | IF (zwz(1,1) /= 0.) THEN |
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| 162 | |
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| 163 | ! -->> the density profil is statically instable : |
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| 164 | |
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| 165 | DO ji = 1, jpi |
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| 166 | IF( zwy(ji,1) /= 0. ) THEN |
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| 167 | |
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| 168 | ! ikbot: ocean bottom level |
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| 169 | |
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| 170 | ikbot = mbathy(ji,jj) |
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| 171 | |
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| 172 | ! vertical iteration |
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| 173 | |
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| 174 | DO jiter = 1, jpk |
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| 175 | |
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| 176 | ! search of ikup : the first static instability from the sea surface |
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| 177 | |
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| 178 | ik = 0 |
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| 179 | 220 CONTINUE |
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| 180 | ik = ik + 1 |
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| 181 | IF( ik >= ikbot-1 ) GO TO 200 |
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| 182 | zwx(ji,ik) = zrhop(ji,jj,ik) - zrhop(ji,jj,ik+1) |
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| 183 | IF( zwx(ji,ik) <= 0. ) GO TO 220 |
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| 184 | ikup = ik |
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| 185 | ! the density profil is instable below ikup |
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| 186 | |
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| 187 | ! ikdown : bottom of the instable portion of the density profil |
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| 188 | |
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| 189 | ! search of ikdown and vertical mixing from ikup to ikdown |
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| 190 | |
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| 191 | ze3tot= fse3t(ji,jj,ikup) |
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| 192 | zta = tn (ji,jj,ikup) |
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| 193 | zsa = sn (ji,jj,ikup) |
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| 194 | zraua = zrhop(ji,jj,ikup) |
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| 195 | |
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| 196 | DO jkdown = ikup+1, ikbot-1 |
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| 197 | IF( zraua <= zrhop(ji,jj,jkdown) ) THEN |
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| 198 | ikdown = jkdown |
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| 199 | GO TO 240 |
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| 200 | ENDIF |
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| 201 | ze3dwn = fse3t(ji,jj,jkdown) |
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| 202 | ze3tot = ze3tot + ze3dwn |
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| 203 | zta = ( zta*(ze3tot-ze3dwn) + tn(ji,jj,jkdown)*ze3dwn )/ze3tot |
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| 204 | zsa = ( zsa*(ze3tot-ze3dwn) + sn(ji,jj,jkdown)*ze3dwn )/ze3tot |
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| 205 | zraua = ( zraua*(ze3tot-ze3dwn) + zrhop(ji,jj,jkdown)*ze3dwn )/ze3tot |
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| 206 | inpci = inpci+1 |
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| 207 | END DO |
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| 208 | ikdown = ikbot-1 |
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| 209 | 240 CONTINUE |
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| 210 | |
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| 211 | DO jkp = ikup, ikdown-1 |
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| 212 | tn(ji,jj,jkp) = zta |
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| 213 | sn(ji,jj,jkp) = zsa |
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| 214 | zrhop(ji,jj,jkp) = zraua |
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| 215 | END DO |
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| 216 | IF (ikdown == ikbot-1 .AND. zraua >= zrhop(ji,jj,ikdown) ) THEN |
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| 217 | tn(ji,jj,ikdown) = zta |
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| 218 | sn(ji,jj,ikdown) = zsa |
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| 219 | zrhop(ji,jj,ikdown) = zraua |
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| 220 | ENDIF |
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| 221 | |
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| 222 | END DO |
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| 223 | ENDIF |
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| 224 | 200 CONTINUE |
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| 225 | END DO |
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| 226 | |
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| 227 | ! <<-- no more static instability on slab jj |
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| 228 | |
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| 229 | ENDIF |
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| 230 | ! ! =============== |
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| 231 | END DO ! End of slab |
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| 232 | ! ! =============== |
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| 233 | |
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| 234 | |
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| 235 | ! save the trends for diagnostic |
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| 236 | ! Non penetrative mixing trends |
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| 237 | IF( l_trdtra ) THEN |
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| 238 | ztdta(:,:,:) = tn(:,:,:) - ztdta(:,:,:) |
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| 239 | ztdsa(:,:,:) = sn(:,:,:) - ztdsa(:,:,:) |
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| 240 | |
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| 241 | CALL trd_mod(ztdta, ztdsa, jpttdnpc, 'TRA', kt) |
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| 242 | ENDIF |
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| 243 | |
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| 244 | ! Lateral boundary conditions on ( tn, sn ) ( Unchanged sign) |
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| 245 | ! ------------------------------============ |
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| 246 | CALL lbc_lnk( tn, 'T', 1. ) |
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| 247 | CALL lbc_lnk( sn, 'T', 1. ) |
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| 248 | |
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| 249 | |
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| 250 | ! 2. non penetrative convective scheme statistics |
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| 251 | ! ----------------------------------------------- |
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| 252 | |
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| 253 | IF( nnpc2 /= 0 .AND. MOD( kt, nnpc2 ) == 0 ) THEN |
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| 254 | IF(lwp) WRITE(numout,*)' kt=',kt, ' number of statically instable', & |
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| 255 | ' water column : ',inpcc, ' number of iteration : ',inpci |
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| 256 | ENDIF |
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| 257 | |
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| 258 | ENDIF |
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| 259 | |
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| 260 | END SUBROUTINE tra_npc |
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| 261 | |
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| 262 | |
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| 263 | SUBROUTINE tra_npc_init |
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| 264 | !!---------------------------------------------------------------------- |
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| 265 | !! *** ROUTINE tra_npc_init *** |
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| 266 | !! |
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| 267 | !! ** Purpose : initializations of the non-penetrative adjustment scheme |
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| 268 | !! |
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| 269 | !! History : |
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| 270 | !! 8.5 ! 02-12 (G. Madec) F90 : free form |
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| 271 | !!---------------------------------------------------------------------- |
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| 272 | !! * Namelist |
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| 273 | NAMELIST/namnpc/ nnpc1, nnpc2 |
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| 274 | !!---------------------------------------------------------------------- |
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| 275 | |
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| 276 | ! Namelist namzdf : vertical diffusion |
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| 277 | REWIND( numnam ) |
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| 278 | READ ( numnam, namnpc ) |
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| 279 | |
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| 280 | ! Parameter print |
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| 281 | ! --------------- |
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| 282 | IF(lwp) THEN |
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| 283 | WRITE(numout,*) |
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| 284 | WRITE(numout,*) 'tra_npc_init : Non Penetrative Convection (npc) scheme' |
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| 285 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 286 | WRITE(numout,*) ' Namelist namnpc : set npc scheme parameters' |
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| 287 | WRITE(numout,*) |
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| 288 | WRITE(numout,*) ' npc scheme frequency nnpc1 = ', nnpc1 |
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| 289 | WRITE(numout,*) ' npc scheme print frequency nnpc2 = ', nnpc2 |
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| 290 | WRITE(numout,*) |
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| 291 | ENDIF |
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| 292 | |
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| 293 | |
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| 294 | ! Parameter controls |
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| 295 | ! ------------------ |
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| 296 | IF ( nnpc1 == 0 ) THEN |
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| 297 | IF(lwp) WRITE(numout,cform_war) |
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| 298 | IF(lwp) WRITE(numout,*) ' nnpc1 = ', nnpc1, ' is forced to 1' |
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| 299 | nnpc1 = 1 |
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| 300 | nwarn = nwarn + 1 |
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| 301 | ENDIF |
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| 302 | |
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| 303 | END SUBROUTINE tra_npc_init |
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| 304 | |
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| 305 | !!====================================================================== |
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| 306 | END MODULE tranpc |
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