- Timestamp:
- 2017-12-06T10:36:02+01:00 (7 years ago)
- File:
-
- 1 edited
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branches/2017/dev_METO_2017/NEMOGCM/NEMO/OPA_SRC/SBC/sbcwave.F90
r7864 r8908 33 33 34 34 PUBLIC sbc_stokes ! routine called in sbccpl 35 PUBLIC sbc_wstress ! routine called in sbcmod 35 36 PUBLIC sbc_wave ! routine called in sbcmod 36 37 PUBLIC sbc_wave_init ! routine called in sbcmod … … 42 43 LOGICAL, PUBLIC :: cpl_sdrfty = .FALSE. 43 44 LOGICAL, PUBLIC :: cpl_wper = .FALSE. 45 LOGICAL, PUBLIC :: cpl_wfreq = .FALSE. 44 46 LOGICAL, PUBLIC :: cpl_wnum = .FALSE. 45 LOGICAL, PUBLIC :: cpl_wstrf = .FALSE. 47 LOGICAL, PUBLIC :: cpl_tauoc = .FALSE. 48 LOGICAL, PUBLIC :: cpl_tauw = .FALSE. 46 49 LOGICAL, PUBLIC :: cpl_wdrag = .FALSE. 47 50 … … 51 54 INTEGER :: jp_hsw ! index of significant wave hight (m) at T-point 52 55 INTEGER :: jp_wmp ! index of mean wave period (s) at T-point 56 INTEGER :: jp_wfr ! index of wave peak frequency (1/s) at T-point 53 57 54 58 TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_cd ! structure of input fields (file informations, fields read) Drag Coefficient … … 56 60 TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_wn ! structure of input fields (file informations, fields read) wave number for Qiao 57 61 TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_tauoc ! structure of input fields (file informations, fields read) normalized wave stress into the ocean 62 TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_tauw ! structure of input fields (file informations, fields read) ocean stress components from wave model 63 58 64 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: cdn_wave !: 59 65 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: hsw, wmp, wnum !: 66 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: wfreq !: 60 67 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: tauoc_wave !: 68 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: tauw_x, tauw_y !: 61 69 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: tsd2d !: 62 70 REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: div_sd !: barotropic stokes drift divergence … … 96 104 CALL wrk_alloc( jpi,jpj, zk_t, zk_u, zk_v, zu0_sd, zv0_sd ) 97 105 ! 98 ! 99 zfac = 2.0_wp * rpi / 16.0_wp 100 DO jj = 1, jpj ! exp. wave number at t-point (Eq. (19) in Breivick et al. (2014) ) 101 DO ji = 1, jpi 106 ! select parameterization for the calculation of vertical Stokes drift 107 ! exp. wave number at t-point 108 IF( nn_sdrift==jp_breivik .OR. nn_sdrift==jp_phillips ) THEN ! (Eq. (19) in Breivick et al. (2014) ) 109 zfac = 2.0_wp * rpi / 16.0_wp 110 DO jj = 1, jpj 111 DO ji = 1, jpi 102 112 ! Stokes drift velocity estimated from Hs and Tmean 103 ztransp = zfac * hsw(ji,jj)*hsw(ji,jj) / MAX( wmp(ji,jj) 113 ztransp = zfac * hsw(ji,jj)*hsw(ji,jj) / MAX( wmp(ji,jj), 0.0000001_wp ) 104 114 ! Stokes surface speed 105 zsp0 = SQRT( ut0sd(ji,jj)*ut0sd(ji,jj) + vt0sd(ji,jj)*vt0sd(ji,jj) ) 106 tsd2d(ji,jj) = zsp0 115 tsd2d(ji,jj) = SQRT( ut0sd(ji,jj)*ut0sd(ji,jj) + vt0sd(ji,jj)*vt0sd(ji,jj)) 107 116 ! Wavenumber scale 108 zk_t(ji,jj) = ABS( zsp0 ) / MAX( ABS( 5.97_wp*ztransp ) , 0.0000001_wp ) 109 END DO 110 END DO 111 DO jj = 1, jpjm1 ! exp. wave number & Stokes drift velocity at u- & v-points 112 DO ji = 1, jpim1 113 zk_u(ji,jj) = 0.5_wp * ( zk_t(ji,jj) + zk_t(ji+1,jj) ) 114 zk_v(ji,jj) = 0.5_wp * ( zk_t(ji,jj) + zk_t(ji,jj+1) ) 115 ! 116 zu0_sd(ji,jj) = 0.5_wp * ( ut0sd(ji,jj) + ut0sd(ji+1,jj) ) 117 zv0_sd(ji,jj) = 0.5_wp * ( vt0sd(ji,jj) + vt0sd(ji,jj+1) ) 118 END DO 119 END DO 117 zk_t(ji,jj) = ABS( tsd2d(ji,jj) ) / MAX( ABS( 5.97_wp*ztransp ), 0.0000001_wp ) 118 END DO 119 END DO 120 DO jj = 1, jpjm1 ! exp. wave number & Stokes drift velocity at u- & v-points 121 DO ji = 1, jpim1 122 zk_u(ji,jj) = 0.5_wp * ( zk_t(ji,jj) + zk_t(ji+1,jj) ) 123 zk_v(ji,jj) = 0.5_wp * ( zk_t(ji,jj) + zk_t(ji,jj+1) ) 124 ! 125 zu0_sd(ji,jj) = 0.5_wp * ( ut0sd(ji,jj) + ut0sd(ji+1,jj) ) 126 zv0_sd(ji,jj) = 0.5_wp * ( vt0sd(ji,jj) + vt0sd(ji,jj+1) ) 127 END DO 128 END DO 129 ELSE IF( nn_sdrift==jp_peakfr ) THEN ! peak wave number calculated from the peak frequency received by the wave model 130 DO jj = 1, jpjm1 131 DO ji = 1, jpim1 132 zk_u(ji,jj) = 0.5_wp * ( wfreq(ji,jj)*wfreq(ji,jj) + wfreq(ji+1,jj)*wfreq(ji+1,jj) ) / grav 133 zk_v(ji,jj) = 0.5_wp * ( wfreq(ji,jj)*wfreq(ji,jj) + wfreq(ji,jj+1)*wfreq(ji,jj+1) ) / grav 134 ! 135 zu0_sd(ji,jj) = 0.5_wp * ( ut0sd(ji,jj) + ut0sd(ji+1,jj) ) 136 zv0_sd(ji,jj) = 0.5_wp * ( vt0sd(ji,jj) + vt0sd(ji,jj+1) ) 137 END DO 138 END DO 139 ENDIF 120 140 ! 121 141 ! !== horizontal Stokes Drift 3D velocity ==! 122 DO jk = 1, jpkm1 123 DO jj = 2, jpjm1 124 DO ji = 2, jpim1 125 zdep_u = 0.5_wp * ( gdept_n(ji,jj,jk) + gdept_n(ji+1,jj,jk) ) 126 zdep_v = 0.5_wp * ( gdept_n(ji,jj,jk) + gdept_n(ji,jj+1,jk) ) 127 ! 128 zkh_u = zk_u(ji,jj) * zdep_u ! k * depth 129 zkh_v = zk_v(ji,jj) * zdep_v 130 ! ! Depth attenuation 131 zda_u = EXP( -2.0_wp*zkh_u ) / ( 1.0_wp + 8.0_wp*zkh_u ) 132 zda_v = EXP( -2.0_wp*zkh_v ) / ( 1.0_wp + 8.0_wp*zkh_v ) 133 ! 134 usd(ji,jj,jk) = zda_u * zu0_sd(ji,jj) * umask(ji,jj,jk) 135 vsd(ji,jj,jk) = zda_v * zv0_sd(ji,jj) * vmask(ji,jj,jk) 136 END DO 137 END DO 138 END DO 142 IF( nn_sdrift==jp_breivik ) THEN 143 DO jk = 1, jpkm1 144 DO jj = 2, jpjm1 145 DO ji = 2, jpim1 146 zdep_u = 0.5_wp * ( gdept_n(ji,jj,jk) + gdept_n(ji+1,jj,jk) ) 147 zdep_v = 0.5_wp * ( gdept_n(ji,jj,jk) + gdept_n(ji,jj+1,jk) ) 148 ! 149 zkh_u = zk_u(ji,jj) * zdep_u ! k * depth 150 zkh_v = zk_v(ji,jj) * zdep_v 151 ! ! Depth attenuation 152 zda_u = EXP( -2.0_wp*zkh_u ) / ( 1.0_wp + 8.0_wp*zkh_u ) 153 zda_v = EXP( -2.0_wp*zkh_v ) / ( 1.0_wp + 8.0_wp*zkh_v ) 154 ! 155 usd(ji,jj,jk) = zda_u * zu0_sd(ji,jj) * umask(ji,jj,jk) 156 vsd(ji,jj,jk) = zda_v * zv0_sd(ji,jj) * vmask(ji,jj,jk) 157 END DO 158 END DO 159 END DO 160 ELSE IF( nn_sdrift==jp_phillips .OR. nn_sdrift==jp_peakfr ) THEN 161 DO jk = 1, jpkm1 162 DO jj = 2, jpjm1 163 DO ji = 2, jpim1 164 zdep_u = 0.5_wp * ( gdept_n(ji,jj,jk) + gdept_n(ji+1,jj,jk) ) 165 zdep_v = 0.5_wp * ( gdept_n(ji,jj,jk) + gdept_n(ji,jj+1,jk) ) 166 ! 167 zkh_u = zk_u(ji,jj) * zdep_u ! k * depth 168 zkh_v = zk_v(ji,jj) * zdep_v 169 ! ! Depth attenuation 170 zda_u = EXP( -2.0_wp*zkh_u ) - SQRT(2.0_wp*rpi*zkh_u) * ERFC(SQRT(2.0_wp*zkh_u)) 171 zda_v = EXP( -2.0_wp*zkh_v ) - SQRT(2.0_wp*rpi*zkh_v) * ERFC(SQRT(2.0_wp*zkh_v)) 172 ! 173 usd(ji,jj,jk) = zda_u * zu0_sd(ji,jj) * umask(ji,jj,jk) 174 vsd(ji,jj,jk) = zda_v * zv0_sd(ji,jj) * vmask(ji,jj,jk) 175 END DO 176 END DO 177 END DO 178 ENDIF 179 139 180 CALL lbc_lnk( usd(:,:,:), 'U', vsd(:,:,:), 'V', -1. ) 140 181 ! … … 189 230 190 231 232 SUBROUTINE sbc_wstress( ) 233 !!--------------------------------------------------------------------- 234 !! *** ROUTINE sbc_wstress *** 235 !! 236 !! ** Purpose : Updates the ocean momentum modified by waves 237 !! 238 !! ** Method : - Calculate u,v components of stress depending on stress 239 !! model 240 !! - Calculate the stress module 241 !! - The wind module is not modified by waves 242 !! ** action 243 !!--------------------------------------------------------------------- 244 INTEGER :: jj, ji ! dummy loop argument 245 ! 246 IF( ln_tauoc ) THEN 247 utau(:,:) = utau(:,:)*tauoc_wave(:,:) 248 vtau(:,:) = vtau(:,:)*tauoc_wave(:,:) 249 taum(:,:) = taum(:,:)*tauoc_wave(:,:) 250 ENDIF 251 ! 252 IF( ln_tauw ) THEN 253 DO jj = 1, jpjm1 254 DO ji = 1, jpim1 255 ! Stress components at u- & v-points 256 utau(ji,jj) = 0.5_wp * ( tauw_x(ji,jj) + tauw_x(ji+1,jj) ) 257 vtau(ji,jj) = 0.5_wp * ( tauw_y(ji,jj) + tauw_y(ji,jj+1) ) 258 ! 259 ! Stress module at t points 260 taum(ji,jj) = SQRT( tauw_x(ji,jj)*tauw_x(ji,jj) + tauw_y(ji,jj)*tauw_y(ji,jj) ) 261 END DO 262 END DO 263 264 ENDIF 265 ! 266 END SUBROUTINE sbc_wstress 267 268 191 269 SUBROUTINE sbc_wave( kt ) 192 270 !!--------------------------------------------------------------------- … … 211 289 ENDIF 212 290 213 IF( ln_tauoc .AND. .NOT. cpl_ wstrf) THEN !== Wave induced stress ==!291 IF( ln_tauoc .AND. .NOT. cpl_tauoc ) THEN !== Wave induced stress ==! 214 292 CALL fld_read( kt, nn_fsbc, sf_tauoc ) ! read wave norm stress from external forcing 215 293 tauoc_wave(:,:) = sf_tauoc(1)%fnow(:,:,1) 294 ENDIF 295 296 IF( ln_tauw .AND. .NOT. cpl_tauw ) THEN !== Wave induced stress ==! 297 CALL fld_read( kt, nn_fsbc, sf_tauw ) ! read ocean stress components from external forcing (T grid) 298 tauw_x(:,:) = sf_tauw(1)%fnow(:,:,1) 299 tauw_y(:,:) = sf_tauw(2)%fnow(:,:,1) 216 300 ENDIF 217 301 … … 222 306 IF( jp_hsw > 0 ) hsw (:,:) = sf_sd(jp_hsw)%fnow(:,:,1) ! significant wave height 223 307 IF( jp_wmp > 0 ) wmp (:,:) = sf_sd(jp_wmp)%fnow(:,:,1) ! wave mean period 308 IF( jp_wfr > 0 ) wfreq(:,:) = sf_sd(jp_wfr)%fnow(:,:,1) ! Peak wave frequency 224 309 IF( jp_usd > 0 ) ut0sd(:,:) = sf_sd(jp_usd)%fnow(:,:,1) ! 2D zonal Stokes Drift at T point 225 310 IF( jp_vsd > 0 ) vt0sd(:,:) = sf_sd(jp_vsd)%fnow(:,:,1) ! 2D meridional Stokes Drift at T point … … 234 319 ! !== Computation of the 3d Stokes Drift ==! 235 320 ! 236 IF( jpfld == 4 ) CALL sbc_stokes() ! Calculate only if required fields are read 237 ! ! In coupled wave model-NEMO case the call is done after coupling 321 IF( ((nn_sdrift==jp_breivik .OR. nn_sdrift==jp_phillips) .AND. & 322 jp_hsw>0 .AND. jp_wmp>0 .AND. jp_usd>0 .AND. jp_vsd>0) .OR. & 323 (nn_sdrift==jp_peakfr .AND. jp_wfr>0 .AND. jp_usd>0 .AND. jp_vsd>0) ) & 324 CALL sbc_stokes() ! Calculate only if required fields are read 325 ! ! In coupled wave model-NEMO case the call is done after coupling 238 326 ! 239 327 ENDIF … … 260 348 !! 261 349 CHARACTER(len=100) :: cn_dir ! Root directory for location of drag coefficient files 262 TYPE(FLD_N), ALLOCATABLE, DIMENSION(:) :: slf_i ! array of namelist informations on the fields to read350 TYPE(FLD_N), ALLOCATABLE, DIMENSION(:) :: slf_i, slf_j ! array of namelist informations on the fields to read 263 351 TYPE(FLD_N) :: sn_cdg, sn_usd, sn_vsd, & 264 & sn_hsw, sn_wmp, sn_wnum, sn_tauoc ! informations about the fields to be read 265 ! 266 NAMELIST/namsbc_wave/ sn_cdg, cn_dir, sn_usd, sn_vsd, sn_hsw, sn_wmp, sn_wnum, sn_tauoc 352 & sn_hsw, sn_wmp, sn_wfr, sn_wnum, & 353 & sn_tauoc, sn_tauwx, sn_tauwy ! informations about the fields to be read 354 ! 355 NAMELIST/namsbc_wave/ sn_cdg, cn_dir, sn_usd, sn_vsd, sn_hsw, sn_wmp, sn_wfr, & 356 sn_wnum, sn_tauoc, sn_tauwx, sn_tauwy 267 357 !!--------------------------------------------------------------------- 268 358 ! … … 289 379 290 380 IF( ln_tauoc ) THEN 291 IF( .NOT. cpl_ wstrf) THEN381 IF( .NOT. cpl_tauoc ) THEN 292 382 ALLOCATE( sf_tauoc(1), STAT=ierror ) !* allocate and fill sf_wave with sn_tauoc 293 383 IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave_init: unable to allocate sf_wave structure' ) … … 300 390 ENDIF 301 391 392 IF( ln_tauw ) THEN 393 IF( .NOT. cpl_tauw ) THEN 394 ALLOCATE( sf_tauw(2), STAT=ierror ) !* allocate and fill sf_wave with sn_tauwx/y 395 IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave_init: unable to allocate sf_tauw structure' ) 396 ! 397 ALLOCATE( slf_j(2) ) 398 slf_j(1) = sn_tauwx 399 slf_j(2) = sn_tauwy 400 ALLOCATE( sf_tauw(1)%fnow(jpi,jpj,1) ) 401 ALLOCATE( sf_tauw(2)%fnow(jpi,jpj,1) ) 402 IF( slf_j(1)%ln_tint ) ALLOCATE( sf_tauw(1)%fdta(jpi,jpj,1,2) ) 403 IF( slf_j(2)%ln_tint ) ALLOCATE( sf_tauw(2)%fdta(jpi,jpj,1,2) ) 404 CALL fld_fill( sf_tauw, (/ slf_j /), cn_dir, 'sbc_wave_init', 'read wave input', 'namsbc_wave' ) 405 ENDIF 406 ALLOCATE( tauw_x(jpi,jpj) ) 407 ALLOCATE( tauw_y(jpi,jpj) ) 408 ENDIF 409 302 410 IF( ln_sdw ) THEN ! Find out how many fields have to be read from file if not coupled 303 411 jpfld=0 304 jp_usd=0 ; jp_vsd=0 ; jp_hsw=0 ; jp_wmp=0 412 jp_usd=0 ; jp_vsd=0 ; jp_hsw=0 ; jp_wmp=0 ; jp_wfr=0 305 413 IF( .NOT. cpl_sdrftx ) THEN 306 414 jpfld = jpfld + 1 … … 311 419 jp_vsd = jpfld 312 420 ENDIF 313 IF( .NOT. cpl_hsig ) THEN421 IF( .NOT. cpl_hsig .AND. (nn_sdrift==jp_breivik .OR. nn_sdrift==jp_phillips) ) THEN 314 422 jpfld = jpfld + 1 315 423 jp_hsw = jpfld 316 424 ENDIF 317 IF( .NOT. cpl_wper ) THEN425 IF( .NOT. cpl_wper .AND. (nn_sdrift==jp_breivik .OR. nn_sdrift==jp_phillips) ) THEN 318 426 jpfld = jpfld + 1 319 427 jp_wmp = jpfld 428 ENDIF 429 IF( .NOT. cpl_wfreq .AND. nn_sdrift==jp_peakfr ) THEN 430 jpfld = jpfld + 1 431 jp_wfr = jpfld 320 432 ENDIF 321 433 … … 327 439 IF( jp_hsw > 0 ) slf_i(jp_hsw) = sn_hsw 328 440 IF( jp_wmp > 0 ) slf_i(jp_wmp) = sn_wmp 441 IF( jp_wfr > 0 ) slf_i(jp_wfr) = sn_wfr 442 329 443 ALLOCATE( sf_sd(jpfld), STAT=ierror ) !* allocate and fill sf_sd with stokes drift 330 444 IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave_init: unable to allocate sf_wave structure' ) … … 339 453 ALLOCATE( usd (jpi,jpj,jpk), vsd (jpi,jpj,jpk), wsd(jpi,jpj,jpk) ) 340 454 ALLOCATE( hsw (jpi,jpj) , wmp (jpi,jpj) ) 455 ALLOCATE( wfreq(jpi,jpj) ) 341 456 ALLOCATE( ut0sd(jpi,jpj) , vt0sd(jpi,jpj) ) 342 457 ALLOCATE( div_sd(jpi,jpj) )
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