| 1 | MODULE tranpc |
|---|
| 2 | !!============================================================================== |
|---|
| 3 | !! *** MODULE tranpc *** |
|---|
| 4 | !! Ocean active tracers: non penetrative convection scheme |
|---|
| 5 | !!============================================================================== |
|---|
| 6 | |
|---|
| 7 | !!---------------------------------------------------------------------- |
|---|
| 8 | !! tra_npc : apply the non penetrative convection scheme |
|---|
| 9 | !! tra_npc_init : initialization and control of the scheme |
|---|
| 10 | !!---------------------------------------------------------------------- |
|---|
| 11 | !! * Modules used |
|---|
| 12 | USE oce ! ocean dynamics and active tracers |
|---|
| 13 | USE dom_oce ! ocean space and time domain |
|---|
| 14 | USE trdmod ! ocean active tracer trends |
|---|
| 15 | USE trdmod_oce ! ocean variables trends |
|---|
| 16 | USE eosbn2 ! equation of state (eos routine) |
|---|
| 17 | USE lbclnk ! lateral boundary conditions (or mpp link) |
|---|
| 18 | USE in_out_manager ! I/O manager |
|---|
| 19 | |
|---|
| 20 | IMPLICIT NONE |
|---|
| 21 | PRIVATE |
|---|
| 22 | |
|---|
| 23 | !! * Routine accessibility |
|---|
| 24 | PUBLIC tra_npc ! routine called by step.F90 |
|---|
| 25 | |
|---|
| 26 | !! * Module variable |
|---|
| 27 | INTEGER :: & |
|---|
| 28 | nnpc1 = 1, & ! nnpc1 non penetrative convective scheme frequency |
|---|
| 29 | nnpc2 = 15 ! nnpc2 non penetrative convective scheme print frequency |
|---|
| 30 | |
|---|
| 31 | !! * Substitutions |
|---|
| 32 | # include "domzgr_substitute.h90" |
|---|
| 33 | !!---------------------------------------------------------------------- |
|---|
| 34 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
|---|
| 35 | !! $Header$ |
|---|
| 36 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
|---|
| 37 | !!---------------------------------------------------------------------- |
|---|
| 38 | |
|---|
| 39 | CONTAINS |
|---|
| 40 | |
|---|
| 41 | SUBROUTINE tra_npc( kt ) |
|---|
| 42 | !!---------------------------------------------------------------------- |
|---|
| 43 | !! *** ROUTINE tranpc *** |
|---|
| 44 | !! |
|---|
| 45 | !! ** Purpose : Non penetrative convective adjustment scheme. solve |
|---|
| 46 | !! the static instability of the water column (now, after the swap) |
|---|
| 47 | !! while conserving heat and salt contents. |
|---|
| 48 | !! |
|---|
| 49 | !! ** Method : The algorithm used converges in a maximium of jpk |
|---|
| 50 | !! iterations. instabilities are treated when the vertical density |
|---|
| 51 | !! gradient is less than 1.e-5. |
|---|
| 52 | !! |
|---|
| 53 | !! 'key_trdtra' defined: the trend associated with this |
|---|
| 54 | !! algorithm is saved. |
|---|
| 55 | !! |
|---|
| 56 | !! macro-tasked on vertical slab (jj-loop) |
|---|
| 57 | !! |
|---|
| 58 | !! ** Action : - (tn,sn) after the application od the npc scheme |
|---|
| 59 | !! - save the associated trends (ttrd,strd) ('key_trdtra') |
|---|
| 60 | !! |
|---|
| 61 | !! References : |
|---|
| 62 | !! Madec, et al., 1991, JPO, 21, 9, 1349-1371. |
|---|
| 63 | !! |
|---|
| 64 | !! History : |
|---|
| 65 | !! 1.0 ! 90-09 (G. Madec) Original code |
|---|
| 66 | !! ! 91-11 (G. Madec) |
|---|
| 67 | !! ! 92-06 (M. Imbard) periodic conditions on t and s |
|---|
| 68 | !! ! 93-03 (M. Guyon) symetrical conditions |
|---|
| 69 | !! ! 96-01 (G. Madec) statement function for e3 |
|---|
| 70 | !! suppression of common work arrays |
|---|
| 71 | !! 8.5 ! 02-06 (G. Madec) free form F90 |
|---|
| 72 | !! 9.0 ! 04-08 (C. Talandier) New trends organization |
|---|
| 73 | !!---------------------------------------------------------------------- |
|---|
| 74 | !! * Modules used |
|---|
| 75 | USE oce, ONLY : ztdta => ua, & ! use ua as 3D workspace |
|---|
| 76 | ztdsa => va ! use va as 3D workspace |
|---|
| 77 | |
|---|
| 78 | !! * Arguments |
|---|
| 79 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
|---|
| 80 | |
|---|
| 81 | !! * Local declarations |
|---|
| 82 | INTEGER :: ji, jj, jk ! dummy loop indices |
|---|
| 83 | INTEGER :: & |
|---|
| 84 | inpcc , & ! number of statically instable water column |
|---|
| 85 | inpci , & ! number of iteration for npc scheme |
|---|
| 86 | jiter, jkdown, jkp, & ! ??? |
|---|
| 87 | ikbot, ik, ikup, ikdown ! ??? |
|---|
| 88 | REAL(wp) :: & ! temporary arrays |
|---|
| 89 | ze3tot, zta, zsa, zraua, ze3dwn |
|---|
| 90 | REAL(wp), DIMENSION(jpi,jpk) :: & |
|---|
| 91 | zwx, zwy, zwz ! temporary arrays |
|---|
| 92 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & |
|---|
| 93 | zrhop ! temporary arrays |
|---|
| 94 | !!---------------------------------------------------------------------- |
|---|
| 95 | |
|---|
| 96 | IF( kt == nit000 ) CALL tra_npc_init |
|---|
| 97 | |
|---|
| 98 | |
|---|
| 99 | IF( MOD( kt, nnpc1 ) == 0 ) THEN |
|---|
| 100 | |
|---|
| 101 | inpcc = 0 |
|---|
| 102 | inpci = 0 |
|---|
| 103 | |
|---|
| 104 | ! 0. Potential density |
|---|
| 105 | ! -------------------- |
|---|
| 106 | |
|---|
| 107 | CALL eos( tn, sn, rhd, zrhop ) |
|---|
| 108 | |
|---|
| 109 | ! Save tn and sn trends |
|---|
| 110 | IF( l_trdtra ) THEN |
|---|
| 111 | ztdta(:,:,:) = tn(:,:,:) |
|---|
| 112 | ztdsa(:,:,:) = sn(:,:,:) |
|---|
| 113 | ENDIF |
|---|
| 114 | |
|---|
| 115 | ! ! =============== |
|---|
| 116 | DO jj = 1, jpj ! Vertical slab |
|---|
| 117 | ! ! =============== |
|---|
| 118 | |
|---|
| 119 | ! 1. Static instability pointer |
|---|
| 120 | ! ----------------------------- |
|---|
| 121 | |
|---|
| 122 | DO jk = 1, jpkm1 |
|---|
| 123 | DO ji = 1, jpi |
|---|
| 124 | zwx(ji,jk) = ( zrhop(ji,jj,jk) - zrhop(ji,jj,jk+1) ) * tmask(ji,jj,jk+1) |
|---|
| 125 | END DO |
|---|
| 126 | END DO |
|---|
| 127 | |
|---|
| 128 | ! 1.1 do not consider the boundary points |
|---|
| 129 | |
|---|
| 130 | ! even if east-west cyclic b. c. do not considere ji=1 or jpi |
|---|
| 131 | DO jk = 1, jpkm1 |
|---|
| 132 | zwx( 1 ,jk) = 0.e0 |
|---|
| 133 | zwx(jpi,jk) = 0.e0 |
|---|
| 134 | END DO |
|---|
| 135 | ! even if south-symmetric b. c. used, do not considere jj=1 |
|---|
| 136 | IF( jj == 1 ) zwx(:,:) = 0.e0 |
|---|
| 137 | |
|---|
| 138 | DO jk = 1, jpkm1 |
|---|
| 139 | DO ji = 1, jpi |
|---|
| 140 | zwx(ji,jk) = 1. |
|---|
| 141 | IF( zwx(ji,jk) < 1.e-5 ) zwx(ji,jk)=0. |
|---|
| 142 | END DO |
|---|
| 143 | END DO |
|---|
| 144 | |
|---|
| 145 | zwy(:,1) = 0. |
|---|
| 146 | DO ji = 1, jpi |
|---|
| 147 | DO jk = 1, jpkm1 |
|---|
| 148 | zwy(ji,1) = zwy(ji,1) + zwx(ji,jk) |
|---|
| 149 | END DO |
|---|
| 150 | END DO |
|---|
| 151 | |
|---|
| 152 | zwz(1,1) = 0. |
|---|
| 153 | DO ji = 1, jpi |
|---|
| 154 | zwz(1,1) = zwz(1,1) + zwy(ji,1) |
|---|
| 155 | END DO |
|---|
| 156 | |
|---|
| 157 | inpcc = inpcc + NINT( zwz(1,1) ) |
|---|
| 158 | |
|---|
| 159 | |
|---|
| 160 | ! 2. Vertical mixing for each instable portion of the density profil |
|---|
| 161 | ! ------------------------------------------------------------------ |
|---|
| 162 | |
|---|
| 163 | IF (zwz(1,1) /= 0.) THEN |
|---|
| 164 | |
|---|
| 165 | ! -->> the density profil is statically instable : |
|---|
| 166 | |
|---|
| 167 | DO ji = 1, jpi |
|---|
| 168 | IF( zwy(ji,1) /= 0. ) THEN |
|---|
| 169 | |
|---|
| 170 | ! ikbot: ocean bottom level |
|---|
| 171 | |
|---|
| 172 | ikbot = mbathy(ji,jj) |
|---|
| 173 | |
|---|
| 174 | ! vertical iteration |
|---|
| 175 | |
|---|
| 176 | DO jiter = 1, jpk |
|---|
| 177 | |
|---|
| 178 | ! search of ikup : the first static instability from the sea surface |
|---|
| 179 | |
|---|
| 180 | ik = 0 |
|---|
| 181 | 220 CONTINUE |
|---|
| 182 | ik = ik + 1 |
|---|
| 183 | IF( ik >= ikbot-1 ) GO TO 200 |
|---|
| 184 | zwx(ji,ik) = zrhop(ji,jj,ik) - zrhop(ji,jj,ik+1) |
|---|
| 185 | IF( zwx(ji,ik) <= 0. ) GO TO 220 |
|---|
| 186 | ikup = ik |
|---|
| 187 | ! the density profil is instable below ikup |
|---|
| 188 | |
|---|
| 189 | ! ikdown : bottom of the instable portion of the density profil |
|---|
| 190 | |
|---|
| 191 | ! search of ikdown and vertical mixing from ikup to ikdown |
|---|
| 192 | |
|---|
| 193 | ze3tot= fse3t(ji,jj,ikup) |
|---|
| 194 | zta = tn (ji,jj,ikup) |
|---|
| 195 | zsa = sn (ji,jj,ikup) |
|---|
| 196 | zraua = zrhop(ji,jj,ikup) |
|---|
| 197 | |
|---|
| 198 | DO jkdown = ikup+1, ikbot-1 |
|---|
| 199 | IF( zraua <= zrhop(ji,jj,jkdown) ) THEN |
|---|
| 200 | ikdown = jkdown |
|---|
| 201 | GO TO 240 |
|---|
| 202 | ENDIF |
|---|
| 203 | ze3dwn = fse3t(ji,jj,jkdown) |
|---|
| 204 | ze3tot = ze3tot + ze3dwn |
|---|
| 205 | zta = ( zta*(ze3tot-ze3dwn) + tn(ji,jj,jkdown)*ze3dwn )/ze3tot |
|---|
| 206 | zsa = ( zsa*(ze3tot-ze3dwn) + sn(ji,jj,jkdown)*ze3dwn )/ze3tot |
|---|
| 207 | zraua = ( zraua*(ze3tot-ze3dwn) + zrhop(ji,jj,jkdown)*ze3dwn )/ze3tot |
|---|
| 208 | inpci = inpci+1 |
|---|
| 209 | END DO |
|---|
| 210 | ikdown = ikbot-1 |
|---|
| 211 | 240 CONTINUE |
|---|
| 212 | |
|---|
| 213 | DO jkp = ikup, ikdown-1 |
|---|
| 214 | tn(ji,jj,jkp) = zta |
|---|
| 215 | sn(ji,jj,jkp) = zsa |
|---|
| 216 | zrhop(ji,jj,jkp) = zraua |
|---|
| 217 | END DO |
|---|
| 218 | IF (ikdown == ikbot-1 .AND. zraua >= zrhop(ji,jj,ikdown) ) THEN |
|---|
| 219 | tn(ji,jj,ikdown) = zta |
|---|
| 220 | sn(ji,jj,ikdown) = zsa |
|---|
| 221 | zrhop(ji,jj,ikdown) = zraua |
|---|
| 222 | ENDIF |
|---|
| 223 | |
|---|
| 224 | END DO |
|---|
| 225 | ENDIF |
|---|
| 226 | 200 CONTINUE |
|---|
| 227 | END DO |
|---|
| 228 | |
|---|
| 229 | ! <<-- no more static instability on slab jj |
|---|
| 230 | |
|---|
| 231 | ENDIF |
|---|
| 232 | ! ! =============== |
|---|
| 233 | END DO ! End of slab |
|---|
| 234 | ! ! =============== |
|---|
| 235 | |
|---|
| 236 | |
|---|
| 237 | ! save the trends for diagnostic |
|---|
| 238 | ! Non penetrative mixing trends |
|---|
| 239 | IF( l_trdtra ) THEN |
|---|
| 240 | ztdta(:,:,:) = tn(:,:,:) - ztdta(:,:,:) |
|---|
| 241 | ztdsa(:,:,:) = sn(:,:,:) - ztdsa(:,:,:) |
|---|
| 242 | |
|---|
| 243 | CALL trd_mod(ztdta, ztdsa, jpttdnpc, 'TRA', kt) |
|---|
| 244 | ENDIF |
|---|
| 245 | |
|---|
| 246 | ! Lateral boundary conditions on ( tn, sn ) ( Unchanged sign) |
|---|
| 247 | ! ------------------------------============ |
|---|
| 248 | CALL lbc_lnk( tn, 'T', 1. ) |
|---|
| 249 | CALL lbc_lnk( sn, 'T', 1. ) |
|---|
| 250 | |
|---|
| 251 | |
|---|
| 252 | ! 2. non penetrative convective scheme statistics |
|---|
| 253 | ! ----------------------------------------------- |
|---|
| 254 | |
|---|
| 255 | IF( nnpc2 /= 0 .AND. MOD( kt, nnpc2 ) == 0 ) THEN |
|---|
| 256 | IF(lwp) WRITE(numout,*)' kt=',kt, ' number of statically instable', & |
|---|
| 257 | ' water column : ',inpcc, ' number of iteration : ',inpci |
|---|
| 258 | ENDIF |
|---|
| 259 | |
|---|
| 260 | ENDIF |
|---|
| 261 | |
|---|
| 262 | END SUBROUTINE tra_npc |
|---|
| 263 | |
|---|
| 264 | |
|---|
| 265 | SUBROUTINE tra_npc_init |
|---|
| 266 | !!---------------------------------------------------------------------- |
|---|
| 267 | !! *** ROUTINE tra_npc_init *** |
|---|
| 268 | !! |
|---|
| 269 | !! ** Purpose : initializations of the non-penetrative adjustment scheme |
|---|
| 270 | !! |
|---|
| 271 | !! History : |
|---|
| 272 | !! 8.5 ! 02-12 (G. Madec) F90 : free form |
|---|
| 273 | !!---------------------------------------------------------------------- |
|---|
| 274 | !! * Namelist |
|---|
| 275 | NAMELIST/namnpc/ nnpc1, nnpc2 |
|---|
| 276 | !!---------------------------------------------------------------------- |
|---|
| 277 | |
|---|
| 278 | ! Namelist namzdf : vertical diffusion |
|---|
| 279 | REWIND( numnam ) |
|---|
| 280 | READ ( numnam, namnpc ) |
|---|
| 281 | |
|---|
| 282 | ! Parameter print |
|---|
| 283 | ! --------------- |
|---|
| 284 | IF(lwp) THEN |
|---|
| 285 | WRITE(numout,*) |
|---|
| 286 | WRITE(numout,*) 'tra_npc_init : Non Penetrative Convection (npc) scheme' |
|---|
| 287 | WRITE(numout,*) '~~~~~~~~~~~~' |
|---|
| 288 | WRITE(numout,*) ' Namelist namnpc : set npc scheme parameters' |
|---|
| 289 | WRITE(numout,*) |
|---|
| 290 | WRITE(numout,*) ' npc scheme frequency nnpc1 = ', nnpc1 |
|---|
| 291 | WRITE(numout,*) ' npc scheme print frequency nnpc2 = ', nnpc2 |
|---|
| 292 | WRITE(numout,*) |
|---|
| 293 | ENDIF |
|---|
| 294 | |
|---|
| 295 | |
|---|
| 296 | ! Parameter controls |
|---|
| 297 | ! ------------------ |
|---|
| 298 | IF ( nnpc1 == 0 ) THEN |
|---|
| 299 | IF(lwp) WRITE(numout,cform_war) |
|---|
| 300 | IF(lwp) WRITE(numout,*) ' nnpc1 = ', nnpc1, ' is forced to 1' |
|---|
| 301 | nnpc1 = 1 |
|---|
| 302 | nwarn = nwarn + 1 |
|---|
| 303 | ENDIF |
|---|
| 304 | |
|---|
| 305 | END SUBROUTINE tra_npc_init |
|---|
| 306 | |
|---|
| 307 | !!====================================================================== |
|---|
| 308 | END MODULE tranpc |
|---|
