Changeset 5260 for branches/2014/dev_r4650_UKMO10_Tidally_Meaned_Diagnostics/NEMOGCM/NEMO/OPA_SRC/SBC/sbcblk_core.F90
- Timestamp:
- 2015-05-12T12:37:15+02:00 (9 years ago)
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branches/2014/dev_r4650_UKMO10_Tidally_Meaned_Diagnostics/NEMOGCM/NEMO/OPA_SRC/SBC/sbcblk_core.F90
r4624 r5260 5 5 !!===================================================================== 6 6 !! History : 1.0 ! 2004-08 (U. Schweckendiek) Original code 7 !! 2.0 ! 2005-04 (L. Brodeau, A.M. Treguier) additions: 7 !! 2.0 ! 2005-04 (L. Brodeau, A.M. Treguier) additions: 8 8 !! - new bulk routine for efficiency 9 9 !! - WINDS ARE NOW ASSUMED TO BE AT T POINTS in input files !!!! 10 !! - file names and file characteristics in namelist 11 !! - Implement reading of 6-hourly fields 12 !! 3.0 ! 2006-06 (G. Madec) sbc rewritting 13 !! - ! 2006-12 (L. Brodeau) Original code for TURB_CORE_2Z10 !! - file names and file characteristics in namelist 11 !! - Implement reading of 6-hourly fields 12 !! 3.0 ! 2006-06 (G. Madec) sbc rewritting 13 !! - ! 2006-12 (L. Brodeau) Original code for turb_core_2z 14 14 !! 3.2 ! 2009-04 (B. Lemaire) Introduce iom_put 15 15 !! 3.3 ! 2010-10 (S. Masson) add diurnal cycle 16 16 !! 3.4 ! 2011-11 (C. Harris) Fill arrays required by CICE 17 !! 3.7 ! 2014-06 (L. Brodeau) simplification and optimization of CORE bulk 17 18 !!---------------------------------------------------------------------- 18 19 19 20 !!---------------------------------------------------------------------- 20 !! sbc_blk_core : bulk formulation as ocean surface boundary condition 21 !! (forced mode, CORE bulk formulea) 22 !! blk_oce_core : ocean: computes momentum, heat and freshwater fluxes 23 !! blk_ice_core : ice : computes momentum, heat and freshwater fluxes 24 !! turb_core : computes the CORE turbulent transfer coefficients 21 !! sbc_blk_core : bulk formulation as ocean surface boundary condition (forced mode, CORE bulk formulea) 22 !! blk_oce_core : computes momentum, heat and freshwater fluxes over ocean 23 !! blk_ice_core : computes momentum, heat and freshwater fluxes over ice 24 !! blk_bio_meanqsr : compute daily mean short wave radiation over the ocean 25 !! blk_ice_meanqsr : compute daily mean short wave radiation over the ice 26 !! turb_core_2z : Computes turbulent transfert coefficients 27 !! cd_neutral_10m : Estimate of the neutral drag coefficient at 10m 28 !! psi_m : universal profile stability function for momentum 29 !! psi_h : universal profile stability function for temperature and humidity 25 30 !!---------------------------------------------------------------------- 26 31 USE oce ! ocean dynamics and tracers … … 38 43 USE lbclnk ! ocean lateral boundary conditions (or mpp link) 39 44 USE prtctl ! Print control 40 USE sbcwave,ONLY : cdn_wave !wave module 41 #if defined key_lim3 || defined key_cice 45 USE sbcwave, ONLY : cdn_wave ! wave module 42 46 USE sbc_ice ! Surface boundary condition: ice fields 43 #endif44 47 USE lib_fortran ! to use key_nosignedzero 45 48 … … 52 55 PUBLIC turb_core_2z ! routine calles in sbcblk_mfs module 53 56 54 INTEGER , PARAMETER :: jpfld = 9 ! maximum number of files to read 57 INTEGER , PARAMETER :: jpfld = 9 ! maximum number of files to read 55 58 INTEGER , PARAMETER :: jp_wndi = 1 ! index of 10m wind velocity (i-component) (m/s) at T-point 56 59 INTEGER , PARAMETER :: jp_wndj = 2 ! index of 10m wind velocity (j-component) (m/s) at T-point … … 62 65 INTEGER , PARAMETER :: jp_snow = 8 ! index of snow (solid prcipitation) (kg/m2/s) 63 66 INTEGER , PARAMETER :: jp_tdif = 9 ! index of tau diff associated to HF tau (N/m2) at T-point 64 67 65 68 TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf ! structure of input fields (file informations, fields read) 66 69 67 70 ! !!! CORE bulk parameters 68 71 REAL(wp), PARAMETER :: rhoa = 1.22 ! air density … … 75 78 76 79 ! !!* Namelist namsbc_core : CORE bulk parameters 77 LOGICAL :: ln_2m ! logical flag for height of air temp. and hum78 80 LOGICAL :: ln_taudif ! logical flag to use the "mean of stress module - module of mean stress" data 79 81 REAL(wp) :: rn_pfac ! multiplication factor for precipitation 80 82 REAL(wp) :: rn_efac ! multiplication factor for evaporation (clem) 81 83 REAL(wp) :: rn_vfac ! multiplication factor for ice/ocean velocity in the calculation of wind stress (clem) 82 LOGICAL :: ln_bulk2z ! logical flag for case where z(q,t) and z(u) are specified in the namelist83 84 REAL(wp) :: rn_zqt ! z(q,t) : height of humidity and temperature measurements 84 85 REAL(wp) :: rn_zu ! z(u) : height of wind measurements … … 88 89 # include "vectopt_loop_substitute.h90" 89 90 !!---------------------------------------------------------------------- 90 !! NEMO/OPA 3. 3 , NEMO-consortium (2010)91 !! NEMO/OPA 3.7 , NEMO-consortium (2014) 91 92 !! $Id$ 92 93 !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) … … 97 98 !!--------------------------------------------------------------------- 98 99 !! *** ROUTINE sbc_blk_core *** 99 !! 100 !! 100 101 !! ** Purpose : provide at each time step the surface ocean fluxes 101 !! (momentum, heat, freshwater and runoff) 102 !! (momentum, heat, freshwater and runoff) 102 103 !! 103 104 !! ** Method : (1) READ each fluxes in NetCDF files: … … 118 119 !! ** Action : defined at each time-step at the air-sea interface 119 120 !! - utau, vtau i- and j-component of the wind stress 120 !! - taum, wndm wind stress and 10m wind modules at T-point 121 !! - taum wind stress module at T-point 122 !! - wndm wind speed module at T-point over free ocean or leads in presence of sea-ice 121 123 !! - qns, qsr non-solar and solar heat fluxes 122 124 !! - emp upward mass flux (evapo. - precip.) 123 125 !! - sfx salt flux due to freezing/melting (non-zero only if ice is present) 124 126 !! (set in limsbc(_2).F90) 127 !! 128 !! ** References : Large & Yeager, 2004 / Large & Yeager, 2008 129 !! Brodeau et al. Ocean Modelling 2010 125 130 !!---------------------------------------------------------------------- 126 131 INTEGER, INTENT(in) :: kt ! ocean time step 127 ! !132 ! 128 133 INTEGER :: ierror ! return error code 129 134 INTEGER :: ifpr ! dummy loop indice 130 135 INTEGER :: jfld ! dummy loop arguments 131 136 INTEGER :: ios ! Local integer output status for namelist read 132 ! !137 ! 133 138 CHARACTER(len=100) :: cn_dir ! Root directory for location of core files 134 139 TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist informations on the fields to read … … 136 141 TYPE(FLD_N) :: sn_qlw , sn_tair, sn_prec, sn_snow ! " " 137 142 TYPE(FLD_N) :: sn_tdif ! " " 138 NAMELIST/namsbc_core/ cn_dir , ln_ 2m , ln_taudif, rn_pfac, rn_efac, rn_vfac, &143 NAMELIST/namsbc_core/ cn_dir , ln_taudif, rn_pfac, rn_efac, rn_vfac, & 139 144 & sn_wndi, sn_wndj, sn_humi , sn_qsr , & 140 145 & sn_qlw , sn_tair, sn_prec , sn_snow, & 141 & sn_tdif, rn_zqt , ln_bulk2z,rn_zu142 !!--------------------------------------------------------------------- 143 146 & sn_tdif, rn_zqt, rn_zu 147 !!--------------------------------------------------------------------- 148 ! 144 149 ! ! ====================== ! 145 150 IF( kt == nit000 ) THEN ! First call kt=nit000 ! … … 149 154 READ ( numnam_ref, namsbc_core, IOSTAT = ios, ERR = 901) 150 155 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_core in reference namelist', lwp ) 151 156 ! 152 157 REWIND( numnam_cfg ) ! Namelist namsbc_core in configuration namelist : CORE bulk parameters 153 158 READ ( numnam_cfg, namsbc_core, IOSTAT = ios, ERR = 902 ) 154 159 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_core in configuration namelist', lwp ) 155 160 156 IF(lwm) WRITE 161 IF(lwm) WRITE( numond, namsbc_core ) 157 162 ! ! check: do we plan to use ln_dm2dc with non-daily forcing? 158 IF( ln_dm2dc .AND. sn_qsr%nfreqh /= 24 ) & 159 & CALL ctl_stop( 'sbc_blk_core: ln_dm2dc can be activated only with daily short-wave forcing' ) 163 IF( ln_dm2dc .AND. sn_qsr%nfreqh /= 24 ) & 164 & CALL ctl_stop( 'sbc_blk_core: ln_dm2dc can be activated only with daily short-wave forcing' ) 160 165 IF( ln_dm2dc .AND. sn_qsr%ln_tint ) THEN 161 166 CALL ctl_warn( 'sbc_blk_core: ln_dm2dc is taking care of the temporal interpolation of daily qsr', & 162 167 & ' ==> We force time interpolation = .false. for qsr' ) 163 168 sn_qsr%ln_tint = .false. 164 169 ENDIF … … 169 174 slf_i(jp_prec) = sn_prec ; slf_i(jp_snow) = sn_snow 170 175 slf_i(jp_tdif) = sn_tdif 171 ! 176 ! 172 177 lhftau = ln_taudif ! do we use HF tau information? 173 178 jfld = jpfld - COUNT( (/.NOT. lhftau/) ) … … 191 196 IF( MOD( kt - 1, nn_fsbc ) == 0 ) CALL blk_oce_core( kt, sf, sst_m, ssu_m, ssv_m ) 192 197 193 ! If diurnal cycle is activated, compute a daily mean short waves flux for biogeochemistery 198 ! If diurnal cycle is activated, compute a daily mean short waves flux for biogeochemistery 194 199 IF( ltrcdm2dc ) CALL blk_bio_meanqsr 195 200 … … 226 231 !! - qsr : Solar heat flux over the ocean (W/m2) 227 232 !! - qns : Non Solar heat flux over the ocean (W/m2) 228 !! - evap : Evaporation over the ocean (kg/m2/s)229 233 !! - emp : evaporation minus precipitation (kg/m2/s) 230 234 !! … … 269 273 zwnd_j(:,:) = 0.e0 270 274 #if defined key_cyclone 271 # if defined key_vectopt_loop 272 !CDIR COLLAPSE 273 # endif 274 CALL wnd_cyc( kt, zwnd_i, zwnd_j ) ! add Manu ! 275 CALL wnd_cyc( kt, zwnd_i, zwnd_j ) ! add analytical tropical cyclone (Vincent et al. JGR 2012) 275 276 DO jj = 2, jpjm1 276 277 DO ji = fs_2, fs_jpim1 ! vect. opt. … … 279 280 END DO 280 281 END DO 281 #endif282 #if defined key_vectopt_loop283 !CDIR COLLAPSE284 282 #endif 285 283 DO jj = 2, jpjm1 … … 292 290 CALL lbc_lnk( zwnd_j(:,:) , 'T', -1. ) 293 291 ! ... scalar wind ( = | U10m - U_oce | ) at T-point (masked) 294 !CDIR NOVERRCHK295 !CDIR COLLAPSE296 292 wndm(:,:) = SQRT( zwnd_i(:,:) * zwnd_i(:,:) & 297 293 & + zwnd_j(:,:) * zwnd_j(:,:) ) * tmask(:,:,1) … … 300 296 ! I Radiative FLUXES ! 301 297 ! ----------------------------------------------------------------------------- ! 302 298 303 299 ! ocean albedo assumed to be constant + modify now Qsr to include the diurnal cycle ! Short Wave 304 300 zztmp = 1. - albo … … 306 302 ELSE ; qsr(:,:) = zztmp * sf(jp_qsr)%fnow(:,:,1) * tmask(:,:,1) 307 303 ENDIF 308 !CDIR COLLAPSE309 304 zqlw(:,:) = ( sf(jp_qlw)%fnow(:,:,1) - Stef * zst(:,:)*zst(:,:)*zst(:,:)*zst(:,:) ) * tmask(:,:,1) ! Long Wave 310 305 ! ----------------------------------------------------------------------------- ! … … 313 308 314 309 ! ... specific humidity at SST and IST 315 !CDIR NOVERRCHK 316 !CDIR COLLAPSE 317 zqsatw(:,:) = zcoef_qsatw * EXP( -5107.4 / zst(:,:) ) 310 zqsatw(:,:) = zcoef_qsatw * EXP( -5107.4 / zst(:,:) ) 318 311 319 312 ! ... NCAR Bulk formulae, computation of Cd, Ch, Ce at T-point : 320 IF( ln_2m ) THEN 321 !! If air temp. and spec. hum. are given at different height (2m) than wind (10m) : 322 CALL TURB_CORE_2Z(2.,10., zst , sf(jp_tair)%fnow, & 323 & zqsatw, sf(jp_humi)%fnow, wndm, & 324 & Cd , Ch , Ce , & 325 & zt_zu , zq_zu ) 326 ELSE IF( ln_bulk2z ) THEN 327 !! If the height of the air temp./spec. hum. and wind are to be specified by hand : 328 IF( rn_zqt == rn_zu ) THEN 329 !! If air temp. and spec. hum. are at the same height as wind : 330 CALL TURB_CORE_1Z( rn_zu, zst , sf(jp_tair)%fnow(:,:,1), & 331 & zqsatw, sf(jp_humi)%fnow(:,:,1), wndm, & 332 & Cd , Ch , Ce ) 333 ELSE 334 !! If air temp. and spec. hum. are at a different height to wind : 335 CALL TURB_CORE_2Z(rn_zqt, rn_zu , zst , sf(jp_tair)%fnow, & 336 & zqsatw, sf(jp_humi)%fnow, wndm, & 337 & Cd , Ch , Ce , & 338 & zt_zu , zq_zu ) 339 ENDIF 340 ELSE 341 !! If air temp. and spec. hum. are given at same height than wind (10m) : 342 !gm bug? at the compiling phase, add a copy in temporary arrays... ==> check perf 343 ! CALL TURB_CORE_1Z( 10., zst (:,:), sf(jp_tair)%fnow(:,:), & 344 ! & zqsatw(:,:), sf(jp_humi)%fnow(:,:), wndm(:,:), & 345 ! & Cd (:,:), Ch (:,:), Ce (:,:) ) 346 !gm bug 347 ! ARPDBG - this won't compile with gfortran. Fix but check performance 348 ! as per comment above. 349 CALL TURB_CORE_1Z( 10., zst , sf(jp_tair)%fnow(:,:,1), & 350 & zqsatw, sf(jp_humi)%fnow(:,:,1), wndm, & 351 & Cd , Ch , Ce ) 352 ENDIF 353 313 CALL turb_core_2z( rn_zqt, rn_zu, zst, sf(jp_tair)%fnow, zqsatw, sf(jp_humi)%fnow, wndm, & 314 & Cd, Ch, Ce, zt_zu, zq_zu ) 315 354 316 ! ... tau module, i and j component 355 317 DO jj = 1, jpj … … 363 325 364 326 ! ... add the HF tau contribution to the wind stress module? 365 IF( lhftau ) THEN 366 !CDIR COLLAPSE 327 IF( lhftau ) THEN 367 328 taum(:,:) = taum(:,:) + sf(jp_tdif)%fnow(:,:,1) 368 329 ENDIF … … 371 332 ! ... utau, vtau at U- and V_points, resp. 372 333 ! Note the use of 0.5*(2-umask) in order to unmask the stress along coastlines 334 ! Note the use of MAX(tmask(i,j),tmask(i+1,j) is to mask tau over ice shelves 373 335 DO jj = 1, jpjm1 374 336 DO ji = 1, fs_jpim1 375 utau(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( zwnd_i(ji,jj) + zwnd_i(ji+1,jj ) ) 376 vtau(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( zwnd_j(ji,jj) + zwnd_j(ji ,jj+1) ) 337 utau(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( zwnd_i(ji,jj) + zwnd_i(ji+1,jj ) ) & 338 & * MAX(tmask(ji,jj,1),tmask(ji+1,jj,1)) 339 vtau(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( zwnd_j(ji,jj) + zwnd_j(ji ,jj+1) ) & 340 & * MAX(tmask(ji,jj,1),tmask(ji,jj+1,1)) 377 341 END DO 378 342 END DO … … 380 344 CALL lbc_lnk( vtau(:,:), 'V', -1. ) 381 345 346 382 347 ! Turbulent fluxes over ocean 383 348 ! ----------------------------- 384 IF( ln_2m .OR. ( ln_bulk2z .AND. rn_zqt /= rn_zu )) THEN385 ! Values of temp. and hum. adjusted to height of wind must be used386 zevap(:,:) = rn_efac * MAX( 0.e0, rhoa *Ce(:,:)*( zqsatw(:,:) - zq_zu(:,:) ) * wndm(:,:) )! Evaporation387 zqsb (:,:) = rhoa*cpa*Ch(:,:)*( zst (:,:) - zt_zu(:,:) ) * wndm(:,:)! Sensible Heat349 IF( ABS( rn_zu - rn_zqt) < 0.01_wp ) THEN 350 !! q_air and t_air are (or "are almost") given at 10m (wind reference height) 351 zevap(:,:) = rn_efac*MAX( 0._wp, rhoa*Ce(:,:)*( zqsatw(:,:) - sf(jp_humi)%fnow(:,:,1) )*wndm(:,:) ) ! Evaporation 352 zqsb (:,:) = cpa*rhoa*Ch(:,:)*( zst (:,:) - sf(jp_tair)%fnow(:,:,1) )*wndm(:,:) ! Sensible Heat 388 353 ELSE 389 !CDIR COLLAPSE 390 zevap(:,:) = rn_efac * MAX( 0.e0, rhoa *Ce(:,:)*( zqsatw(:,:) - sf(jp_humi)%fnow(:,:,1) ) * wndm(:,:) ) ! Evaporation391 !CDIR COLLAPSE 392 zqsb (:,:) = rhoa*cpa*Ch(:,:)*( zst (:,:) - sf(jp_tair)%fnow(:,:,1) ) *wndm(:,:) ! Sensible Heat354 !! q_air and t_air are not given at 10m (wind reference height) 355 ! Values of temp. and hum. adjusted to height of wind during bulk algorithm iteration must be used!!! 356 zevap(:,:) = rn_efac*MAX( 0._wp, rhoa*Ce(:,:)*( zqsatw(:,:) - zq_zu(:,:) )*wndm(:,:) ) ! Evaporation 357 zqsb (:,:) = cpa*rhoa*Ch(:,:)*( zst (:,:) - zt_zu(:,:) )*wndm(:,:) ! Sensible Heat 393 358 ENDIF 394 !CDIR COLLAPSE395 359 zqla (:,:) = Lv * zevap(:,:) ! Latent Heat 396 360 … … 409 373 ! III Total FLUXES ! 410 374 ! ----------------------------------------------------------------------------- ! 411 412 !CDIR COLLAPSE 375 ! 413 376 emp (:,:) = ( zevap(:,:) & ! mass flux (evap. - precip.) 414 377 & - sf(jp_prec)%fnow(:,:,1) * rn_pfac ) * tmask(:,:,1) 415 !CDIR COLLAPSE416 378 qns(:,:) = zqlw(:,:) - zqsb(:,:) - zqla(:,:) & ! Downward Non Solar flux 417 379 & - sf(jp_snow)%fnow(:,:,1) * rn_pfac * lfus & ! remove latent melting heat for solid precip 418 380 & - zevap(:,:) * pst(:,:) * rcp & ! remove evap heat content at SST 419 381 & + ( sf(jp_prec)%fnow(:,:,1) - sf(jp_snow)%fnow(:,:,1) ) * rn_pfac & ! add liquid precip heat content at Tair 420 & * ( sf(jp_tair)%fnow(:,:,1) - rt0 ) * rcp & 382 & * ( sf(jp_tair)%fnow(:,:,1) - rt0 ) * rcp & 421 383 & + sf(jp_snow)%fnow(:,:,1) * rn_pfac & ! add solid precip heat content at min(Tair,Tsnow) 422 & * ( MIN( sf(jp_tair)%fnow(:,:,1), rt0_snow ) - rt0 ) * cpic 384 & * ( MIN( sf(jp_tair)%fnow(:,:,1), rt0_snow ) - rt0 ) * cpic * tmask(:,:,1) 423 385 ! 424 386 CALL iom_put( "qlw_oce", zqlw ) ! output downward longwave heat over the ocean … … 442 404 ! 443 405 END SUBROUTINE blk_oce_core 444 445 SUBROUTINE blk_bio_meanqsr446 !!---------------------------------------------------------------------447 !! *** ROUTINE blk_bio_meanqsr448 !!449 !! ** Purpose : provide daily qsr_mean for PISCES when450 !! analytic diurnal cycle is applied in physic451 !!452 !! ** Method : add part where there is no ice453 !!454 !!---------------------------------------------------------------------455 IF( nn_timing == 1 ) CALL timing_start('blk_bio_meanqsr')456 457 qsr_mean(:,:) = (1. - albo ) * sf(jp_qsr)%fnow(:,:,1)458 459 IF( nn_timing == 1 ) CALL timing_stop('blk_bio_meanqsr')460 461 END SUBROUTINE blk_bio_meanqsr462 463 464 SUBROUTINE blk_ice_meanqsr(palb,p_qsr_mean,pdim)465 !!---------------------------------------------------------------------466 !!467 !! ** Purpose : provide the daily qsr_mean over sea_ice for PISCES when468 !! analytic diurnal cycle is applied in physic469 !!470 !! ** Method : compute qsr471 !!472 !!---------------------------------------------------------------------473 REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: palb ! ice albedo (clear sky) (alb_ice_cs) [%]474 REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_qsr_mean ! solar heat flux over ice (T-point) [W/m2]475 INTEGER , INTENT(in ) :: pdim ! number of ice categories476 !!477 INTEGER :: ijpl ! number of ice categories (size of 3rd dim of input arrays)478 INTEGER :: ji, jj, jl ! dummy loop indices479 REAL(wp) :: zztmp ! temporary variable480 !!---------------------------------------------------------------------481 IF( nn_timing == 1 ) CALL timing_start('blk_ice_meanqsr')482 !483 ijpl = pdim ! number of ice categories484 zztmp = 1. / ( 1. - albo )485 ! ! ========================== !486 DO jl = 1, ijpl ! Loop over ice categories !487 ! ! ========================== !488 DO jj = 1 , jpj489 DO ji = 1, jpi490 p_qsr_mean(ji,jj,jl) = zztmp * ( 1. - palb(ji,jj,jl) ) * qsr_mean(ji,jj)491 END DO492 END DO493 END DO494 !495 IF( nn_timing == 1 ) CALL timing_stop('blk_ice_meanqsr')496 !497 END SUBROUTINE blk_ice_meanqsr498 406 499 407 … … 518 426 REAL(wp), DIMENSION(:,:) , INTENT(in ) :: pui ! ice surface velocity (i- and i- components [m/s] 519 427 REAL(wp), DIMENSION(:,:) , INTENT(in ) :: pvi ! at I-point (B-grid) or U & V-point (C-grid) 520 REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: palb ! ice albedo ( clear sky) (alb_ice_cs)[%]428 REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: palb ! ice albedo (all skies) [%] 521 429 REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_taui ! i- & j-components of surface ice stress [N/m2] 522 430 REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_tauj ! at I-point (B-grid) or U & V-point (C-grid) … … 538 446 REAL(wp) :: zcoef_wnorm, zcoef_wnorm2, zcoef_dqlw, zcoef_dqla, zcoef_dqsb 539 447 REAL(wp) :: zztmp ! temporary variable 540 REAL(wp) :: zcoef_frca ! fractional cloud amount541 448 REAL(wp) :: zwnorm_f, zwndi_f , zwndj_f ! relative wind module and components at F-point 542 449 REAL(wp) :: zwndi_t , zwndj_t ! relative wind components at T-point … … 562 469 zcoef_dqla = -Ls * Cice * 11637800. * (-5897.8) 563 470 zcoef_dqsb = rhoa * cpa * Cice 564 zcoef_frca = 1.0 - 0.3565 471 566 472 !!gm brutal.... … … 579 485 CASE( 'I' ) ! B-grid ice dynamics : I-point (i.e. F-point with sea-ice indexation) 580 486 ! and scalar wind at T-point ( = | U10m - U_ice | ) (masked) 581 !CDIR NOVERRCHK582 487 DO jj = 2, jpjm1 583 488 DO ji = 2, jpim1 ! B grid : NO vector opt … … 604 509 ! 605 510 CASE( 'C' ) ! C-grid ice dynamics : U & V-points (same as ocean) 606 #if defined key_vectopt_loop607 !CDIR COLLAPSE608 #endif609 511 DO jj = 2, jpj 610 512 DO ji = fs_2, jpi ! vect. opt. … … 614 516 END DO 615 517 END DO 616 #if defined key_vectopt_loop617 !CDIR COLLAPSE618 #endif619 518 DO jj = 2, jpjm1 620 519 DO ji = fs_2, fs_jpim1 ! vect. opt. … … 635 534 DO jl = 1, ijpl ! Loop over ice categories ! 636 535 ! ! ========================== ! 637 !CDIR NOVERRCHK638 !CDIR COLLAPSE639 536 DO jj = 1 , jpj 640 !CDIR NOVERRCHK641 537 DO ji = 1, jpi 642 538 ! ----------------------------! … … 648 544 p_qsr(ji,jj,jl) = zztmp * ( 1. - palb(ji,jj,jl) ) * qsr(ji,jj) 649 545 ! Long Wave (lw) 650 ! iovino 651 IF( ff(ji,jj) .GT. 0._wp ) THEN 652 z_qlw(ji,jj,jl) = ( 0.95 * sf(jp_qlw)%fnow(ji,jj,1) - Stef * pst(ji,jj,jl) * zst3 ) * tmask(ji,jj,1) 653 ELSE 654 z_qlw(ji,jj,jl) = 0.95 * ( sf(jp_qlw)%fnow(ji,jj,1) - Stef * pst(ji,jj,jl) * zst3 ) * tmask(ji,jj,1) 655 ENDIF 546 z_qlw(ji,jj,jl) = 0.95 * ( sf(jp_qlw)%fnow(ji,jj,1) - Stef * pst(ji,jj,jl) * zst3 ) * tmask(ji,jj,1) 656 547 ! lw sensitivity 657 548 z_dqlw(ji,jj,jl) = zcoef_dqlw * zst3 … … 668 559 & * ( 11637800. * EXP( -5897.8 / pst(ji,jj,jl) ) / rhoa - sf(jp_humi)%fnow(ji,jj,1) ) ) 669 560 ! Latent heat sensitivity for ice (Dqla/Dt) 670 p_dqla(ji,jj,jl) = rn_efac * zcoef_dqla * z_wnds_t(ji,jj) / ( zst2 ) * EXP( -5897.8 / pst(ji,jj,jl) ) 561 IF( p_qla(ji,jj,jl) > 0._wp ) THEN 562 p_dqla(ji,jj,jl) = rn_efac * zcoef_dqla * z_wnds_t(ji,jj) / ( zst2 ) * EXP( -5897.8 / pst(ji,jj,jl) ) 563 ELSE 564 p_dqla(ji,jj,jl) = 0._wp 565 ENDIF 566 671 567 ! Sensible heat sensitivity (Dqsb_ice/Dtn_ice) 672 568 z_dqsb(ji,jj,jl) = zcoef_dqsb * z_wnds_t(ji,jj) … … 676 572 ! ----------------------------! 677 573 ! Downward Non Solar flux 678 p_qns (ji,jj,jl) = z_qlw (ji,jj,jl) - z_qsb (ji,jj,jl) - p_qla (ji,jj,jl) 574 p_qns (ji,jj,jl) = z_qlw (ji,jj,jl) - z_qsb (ji,jj,jl) - p_qla (ji,jj,jl) 679 575 ! Total non solar heat flux sensitivity for ice 680 p_dqns(ji,jj,jl) = - ( z_dqlw(ji,jj,jl) + z_dqsb(ji,jj,jl) + p_dqla(ji,jj,jl) ) 576 p_dqns(ji,jj,jl) = - ( z_dqlw(ji,jj,jl) + z_dqsb(ji,jj,jl) + p_dqla(ji,jj,jl) ) 681 577 END DO 682 578 ! … … 689 585 ! thin surface layer and penetrates inside the ice cover 690 586 ! ( Maykut and Untersteiner, 1971 ; Ebert and Curry, 1993 ) 691 692 !CDIR COLLAPSE 693 p_fr1(:,:) = ( 0.18 * ( 1.0 - zcoef_frca ) + 0.35 * zcoef_frca ) 694 !CDIR COLLAPSE 695 p_fr2(:,:) = ( 0.82 * ( 1.0 - zcoef_frca ) + 0.65 * zcoef_frca ) 696 697 !CDIR COLLAPSE 587 ! 588 p_fr1(:,:) = ( 0.18 * ( 1.0 - cldf_ice ) + 0.35 * cldf_ice ) 589 p_fr2(:,:) = ( 0.82 * ( 1.0 - cldf_ice ) + 0.65 * cldf_ice ) 590 ! 698 591 p_tpr(:,:) = sf(jp_prec)%fnow(:,:,1) * rn_pfac ! total precipitation [kg/m2/s] 699 !CDIR COLLAPSE700 592 p_spr(:,:) = sf(jp_snow)%fnow(:,:,1) * rn_pfac ! solid precipitation [kg/m2/s] 701 CALL iom_put( 'snowpre', p_spr * 86400. ) ! Snow precipitation 702 CALL iom_put( 'precip' , p_tpr * 86400. ) ! Total precipitation593 CALL iom_put( 'snowpre', p_spr * 86400. ) ! Snow precipitation 594 CALL iom_put( 'precip' , p_tpr * 86400. ) ! Total precipitation 703 595 ! 704 596 IF(ln_ctl) THEN … … 713 605 ENDIF 714 606 715 CALL wrk_dealloc( jpi,jpj, z_wnds_t )716 CALL wrk_dealloc( jpi,jpj, pdim, z_qlw, z_qsb, z_dqlw, z_dqsb )607 CALL wrk_dealloc( jpi,jpj, z_wnds_t ) 608 CALL wrk_dealloc( jpi,jpj, pdim, z_qlw, z_qsb, z_dqlw, z_dqsb ) 717 609 ! 718 610 IF( nn_timing == 1 ) CALL timing_stop('blk_ice_core') 719 611 ! 720 612 END SUBROUTINE blk_ice_core 721 722 723 SUBROUTINE TURB_CORE_1Z(zu, sst, T_a, q_sat, q_a, & 724 & dU , Cd , Ch , Ce ) 613 614 615 SUBROUTINE blk_bio_meanqsr 616 !!--------------------------------------------------------------------- 617 !! *** ROUTINE blk_bio_meanqsr 618 !! 619 !! ** Purpose : provide daily qsr_mean for PISCES when 620 !! analytic diurnal cycle is applied in physic 621 !! 622 !! ** Method : add part where there is no ice 623 !! 624 !!--------------------------------------------------------------------- 625 IF( nn_timing == 1 ) CALL timing_start('blk_bio_meanqsr') 626 ! 627 qsr_mean(:,:) = (1. - albo ) * sf(jp_qsr)%fnow(:,:,1) 628 ! 629 IF( nn_timing == 1 ) CALL timing_stop('blk_bio_meanqsr') 630 ! 631 END SUBROUTINE blk_bio_meanqsr 632 633 634 SUBROUTINE blk_ice_meanqsr( palb, p_qsr_mean, pdim ) 635 !!--------------------------------------------------------------------- 636 !! 637 !! ** Purpose : provide the daily qsr_mean over sea_ice for PISCES when 638 !! analytic diurnal cycle is applied in physic 639 !! 640 !! ** Method : compute qsr 641 !! 642 !!--------------------------------------------------------------------- 643 REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: palb ! ice albedo (clear sky) (alb_ice_cs) [%] 644 REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_qsr_mean ! solar heat flux over ice (T-point) [W/m2] 645 INTEGER , INTENT(in ) :: pdim ! number of ice categories 646 ! 647 INTEGER :: ijpl ! number of ice categories (size of 3rd dim of input arrays) 648 INTEGER :: ji, jj, jl ! dummy loop indices 649 REAL(wp) :: zztmp ! temporary variable 650 !!--------------------------------------------------------------------- 651 IF( nn_timing == 1 ) CALL timing_start('blk_ice_meanqsr') 652 ! 653 ijpl = pdim ! number of ice categories 654 zztmp = 1. / ( 1. - albo ) 655 ! ! ========================== ! 656 DO jl = 1, ijpl ! Loop over ice categories ! 657 ! ! ========================== ! 658 DO jj = 1 , jpj 659 DO ji = 1, jpi 660 p_qsr_mean(ji,jj,jl) = zztmp * ( 1. - palb(ji,jj,jl) ) * qsr_mean(ji,jj) 661 END DO 662 END DO 663 END DO 664 ! 665 IF( nn_timing == 1 ) CALL timing_stop('blk_ice_meanqsr') 666 ! 667 END SUBROUTINE blk_ice_meanqsr 668 669 670 SUBROUTINE turb_core_2z( zt, zu, sst, T_zt, q_sat, q_zt, dU, & 671 & Cd, Ch, Ce , T_zu, q_zu ) 725 672 !!---------------------------------------------------------------------- 726 673 !! *** ROUTINE turb_core *** 727 674 !! 728 675 !! ** Purpose : Computes turbulent transfert coefficients of surface 729 !! fluxes according to Large & Yeager (2004) 730 !! 731 !! ** Method : I N E R T I A L D I S S I P A T I O N M E T H O D 732 !! Momentum, Latent and sensible heat exchange coefficients 733 !! Caution: this procedure should only be used in cases when air 734 !! temperature (T_air), air specific humidity (q_air) and wind (dU) 735 !! are provided at the same height 'zzu'! 736 !! 737 !! References : Large & Yeager, 2004 : ??? 738 !!---------------------------------------------------------------------- 739 REAL(wp) , INTENT(in ) :: zu ! altitude of wind measurement [m] 740 REAL(wp), DIMENSION(:,:), INTENT(in ) :: sst ! sea surface temperature [Kelvin] 741 REAL(wp), DIMENSION(:,:), INTENT(in ) :: T_a ! potential air temperature [Kelvin] 742 REAL(wp), DIMENSION(:,:), INTENT(in ) :: q_sat ! sea surface specific humidity [kg/kg] 743 REAL(wp), DIMENSION(:,:), INTENT(in ) :: q_a ! specific air humidity [kg/kg] 744 REAL(wp), DIMENSION(:,:), INTENT(in ) :: dU ! wind module |U(zu)-U(0)| [m/s] 745 REAL(wp), DIMENSION(:,:), INTENT( out) :: Cd ! transfert coefficient for momentum (tau) 746 REAL(wp), DIMENSION(:,:), INTENT( out) :: Ch ! transfert coefficient for temperature (Q_sens) 747 REAL(wp), DIMENSION(:,:), INTENT( out) :: Ce ! transfert coefficient for evaporation (Q_lat) 748 !! 749 INTEGER :: j_itt 750 INTEGER , PARAMETER :: nb_itt = 3 751 REAL(wp), PARAMETER :: grav = 9.8 ! gravity 752 REAL(wp), PARAMETER :: kappa = 0.4 ! von Karman s constant 753 754 REAL(wp), DIMENSION(:,:), POINTER :: dU10 ! dU [m/s] 755 REAL(wp), DIMENSION(:,:), POINTER :: dT ! air/sea temperature differeence [K] 756 REAL(wp), DIMENSION(:,:), POINTER :: dq ! air/sea humidity difference [K] 757 REAL(wp), DIMENSION(:,:), POINTER :: Cd_n10 ! 10m neutral drag coefficient 758 REAL(wp), DIMENSION(:,:), POINTER :: Ce_n10 ! 10m neutral latent coefficient 759 REAL(wp), DIMENSION(:,:), POINTER :: Ch_n10 ! 10m neutral sensible coefficient 760 REAL(wp), DIMENSION(:,:), POINTER :: sqrt_Cd_n10 ! root square of Cd_n10 761 REAL(wp), DIMENSION(:,:), POINTER :: sqrt_Cd ! root square of Cd 762 REAL(wp), DIMENSION(:,:), POINTER :: T_vpot ! virtual potential temperature [K] 763 REAL(wp), DIMENSION(:,:), POINTER :: T_star ! turbulent scale of tem. fluct. 764 REAL(wp), DIMENSION(:,:), POINTER :: q_star ! turbulent humidity of temp. fluct. 765 REAL(wp), DIMENSION(:,:), POINTER :: U_star ! turb. scale of velocity fluct. 766 REAL(wp), DIMENSION(:,:), POINTER :: L ! Monin-Obukov length [m] 767 REAL(wp), DIMENSION(:,:), POINTER :: zeta ! stability parameter at height zu 768 REAL(wp), DIMENSION(:,:), POINTER :: U_n10 ! neutral wind velocity at 10m [m] 769 REAL(wp), DIMENSION(:,:), POINTER :: xlogt, xct, zpsi_h, zpsi_m 770 771 INTEGER , DIMENSION(:,:), POINTER :: stab ! 1st guess stability test integer 772 !!---------------------------------------------------------------------- 773 ! 774 IF( nn_timing == 1 ) CALL timing_start('TURB_CORE_1Z') 775 ! 776 CALL wrk_alloc( jpi,jpj, stab ) ! integer 777 CALL wrk_alloc( jpi,jpj, dU10, dT, dq, Cd_n10, Ce_n10, Ch_n10, sqrt_Cd_n10, sqrt_Cd, L ) 778 CALL wrk_alloc( jpi,jpj, T_vpot, T_star, q_star, U_star, zeta, U_n10, xlogt, xct, zpsi_h, zpsi_m ) 779 780 !! * Start 781 !! Air/sea differences 782 dU10 = max(0.5, dU) ! we don't want to fall under 0.5 m/s 783 dT = T_a - sst ! assuming that T_a is allready the potential temp. at zzu 784 dq = q_a - q_sat 785 !! 786 !! Virtual potential temperature 787 T_vpot = T_a*(1. + 0.608*q_a) 788 !! 789 !! Neutral Drag Coefficient 790 stab = 0.5 + sign(0.5,dT) ! stable : stab = 1 ; unstable : stab = 0 791 IF ( ln_cdgw ) THEN 792 cdn_wave = cdn_wave - rsmall*(tmask(:,:,1)-1) 793 Cd_n10(:,:) = cdn_wave 794 ELSE 795 Cd_n10 = 1.e-3 * ( 2.7/dU10 + 0.142 + dU10/13.09 ) ! L & Y eq. (6a) 796 ENDIF 797 sqrt_Cd_n10 = sqrt(Cd_n10) 798 Ce_n10 = 1.e-3 * ( 34.6 * sqrt_Cd_n10 ) ! L & Y eq. (6b) 799 Ch_n10 = 1.e-3*sqrt_Cd_n10*(18.*stab + 32.7*(1.-stab)) ! L & Y eq. (6c), (6d) 800 !! 801 !! Initializing transfert coefficients with their first guess neutral equivalents : 802 Cd = Cd_n10 ; Ce = Ce_n10 ; Ch = Ch_n10 ; sqrt_Cd = sqrt(Cd) 803 804 !! * Now starting iteration loop 805 DO j_itt=1, nb_itt 806 !! Turbulent scales : 807 U_star = sqrt_Cd*dU10 ! L & Y eq. (7a) 808 T_star = Ch/sqrt_Cd*dT ! L & Y eq. (7b) 809 q_star = Ce/sqrt_Cd*dq ! L & Y eq. (7c) 810 811 !! Estimate the Monin-Obukov length : 812 L = (U_star**2)/( kappa*grav*(T_star/T_vpot + q_star/(q_a + 1./0.608)) ) 813 814 !! Stability parameters : 815 zeta = zu/L ; zeta = sign( min(abs(zeta),10.0), zeta ) 816 zpsi_h = psi_h(zeta) 817 zpsi_m = psi_m(zeta) 818 819 IF ( ln_cdgw ) THEN 820 sqrt_Cd=kappa/((kappa/sqrt_Cd_n10) - zpsi_m) ; Cd=sqrt_Cd*sqrt_Cd; 821 ELSE 822 !! Shifting the wind speed to 10m and neutral stability : 823 U_n10 = dU10*1./(1. + sqrt_Cd_n10/kappa*(log(zu/10.) - zpsi_m)) ! L & Y eq. (9a) 824 825 !! Updating the neutral 10m transfer coefficients : 826 Cd_n10 = 1.e-3 * (2.7/U_n10 + 0.142 + U_n10/13.09) ! L & Y eq. (6a) 827 sqrt_Cd_n10 = sqrt(Cd_n10) 828 Ce_n10 = 1.e-3 * (34.6 * sqrt_Cd_n10) ! L & Y eq. (6b) 829 stab = 0.5 + sign(0.5,zeta) 830 Ch_n10 = 1.e-3*sqrt_Cd_n10*(18.*stab + 32.7*(1.-stab)) ! L & Y eq. (6c), (6d) 831 832 !! Shifting the neutral 10m transfer coefficients to ( zu , zeta ) : 833 !! 834 xct = 1. + sqrt_Cd_n10/kappa*(log(zu/10) - zpsi_m) 835 Cd = Cd_n10/(xct*xct) ; sqrt_Cd = sqrt(Cd) 836 ENDIF 837 !! 838 xlogt = log(zu/10.) - zpsi_h 839 !! 840 xct = 1. + Ch_n10*xlogt/kappa/sqrt_Cd_n10 841 Ch = Ch_n10*sqrt_Cd/sqrt_Cd_n10/xct 842 !! 843 xct = 1. + Ce_n10*xlogt/kappa/sqrt_Cd_n10 844 Ce = Ce_n10*sqrt_Cd/sqrt_Cd_n10/xct 845 !! 846 END DO 847 !! 848 CALL wrk_dealloc( jpi,jpj, stab ) ! integer 849 CALL wrk_dealloc( jpi,jpj, dU10, dT, dq, Cd_n10, Ce_n10, Ch_n10, sqrt_Cd_n10, sqrt_Cd, L ) 850 CALL wrk_dealloc( jpi,jpj, T_vpot, T_star, q_star, U_star, zeta, U_n10, xlogt, xct, zpsi_h, zpsi_m ) 851 ! 852 IF( nn_timing == 1 ) CALL timing_stop('TURB_CORE_1Z') 853 ! 854 END SUBROUTINE TURB_CORE_1Z 855 856 857 SUBROUTINE TURB_CORE_2Z(zt, zu, sst, T_zt, q_sat, q_zt, dU, Cd, Ch, Ce, T_zu, q_zu) 858 !!---------------------------------------------------------------------- 859 !! *** ROUTINE turb_core *** 860 !! 861 !! ** Purpose : Computes turbulent transfert coefficients of surface 862 !! fluxes according to Large & Yeager (2004). 863 !! 864 !! ** Method : I N E R T I A L D I S S I P A T I O N M E T H O D 865 !! Momentum, Latent and sensible heat exchange coefficients 866 !! Caution: this procedure should only be used in cases when air 867 !! temperature (T_air) and air specific humidity (q_air) are at a 868 !! different height to wind (dU). 869 !! 870 !! References : Large & Yeager, 2004 : ??? 676 !! fluxes according to Large & Yeager (2004) and Large & Yeager (2008) 677 !! If relevant (zt /= zu), adjust temperature and humidity from height zt to zu 678 !! 679 !! ** Method : Monin Obukhov Similarity Theory 680 !! + Large & Yeager (2004,2008) closure: CD_n10 = f(U_n10) 681 !! 682 !! ** References : Large & Yeager, 2004 / Large & Yeager, 2008 683 !! 684 !! ** Last update: Laurent Brodeau, June 2014: 685 !! - handles both cases zt=zu and zt/=zu 686 !! - optimized: less 2D arrays allocated and less operations 687 !! - better first guess of stability by checking air-sea difference of virtual temperature 688 !! rather than temperature difference only... 689 !! - added function "cd_neutral_10m" that uses the improved parametrization of 690 !! Large & Yeager 2008. Drag-coefficient reduction for Cyclone conditions! 691 !! - using code-wide physical constants defined into "phycst.mod" rather than redifining them 692 !! => 'vkarmn' and 'grav' 871 693 !!---------------------------------------------------------------------- 872 694 REAL(wp), INTENT(in ) :: zt ! height for T_zt and q_zt [m] … … 876 698 REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: q_sat ! sea surface specific humidity [kg/kg] 877 699 REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: q_zt ! specific air humidity [kg/kg] 878 REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: dU ! relative wind module |U(zu)-U(0)|[m/s]700 REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: dU ! relative wind module at zu [m/s] 879 701 REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: Cd ! transfer coefficient for momentum (tau) 880 702 REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: Ch ! transfer coefficient for sensible heat (Q_sens) … … 882 704 REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: T_zu ! air temp. shifted at zu [K] 883 705 REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: q_zu ! spec. hum. shifted at zu [kg/kg] 884 885 INTEGER :: j_itt 886 INTEGER , PARAMETER :: nb_itt = 5 ! number of itterations 887 REAL(wp), PARAMETER :: grav = 9.8 ! gravity 888 REAL(wp), PARAMETER :: kappa = 0.4 ! von Karman's constant 889 890 REAL(wp), DIMENSION(:,:), POINTER :: dU10 ! dU [m/s] 891 REAL(wp), DIMENSION(:,:), POINTER :: dT ! air/sea temperature differeence [K] 892 REAL(wp), DIMENSION(:,:), POINTER :: dq ! air/sea humidity difference [K] 893 REAL(wp), DIMENSION(:,:), POINTER :: Cd_n10 ! 10m neutral drag coefficient 706 ! 707 INTEGER :: j_itt 708 INTEGER , PARAMETER :: nb_itt = 5 ! number of itterations 709 LOGICAL :: l_zt_equal_zu = .FALSE. ! if q and t are given at different height than U 710 ! 711 REAL(wp), DIMENSION(:,:), POINTER :: U_zu ! relative wind at zu [m/s] 894 712 REAL(wp), DIMENSION(:,:), POINTER :: Ce_n10 ! 10m neutral latent coefficient 895 713 REAL(wp), DIMENSION(:,:), POINTER :: Ch_n10 ! 10m neutral sensible coefficient 896 714 REAL(wp), DIMENSION(:,:), POINTER :: sqrt_Cd_n10 ! root square of Cd_n10 897 715 REAL(wp), DIMENSION(:,:), POINTER :: sqrt_Cd ! root square of Cd 898 REAL(wp), DIMENSION(:,:), POINTER :: T_vpot ! virtual potential temperature [K]899 REAL(wp), DIMENSION(:,:), POINTER :: T_star ! turbulent scale of tem. fluct.900 REAL(wp), DIMENSION(:,:), POINTER :: q_star ! turbulent humidity of temp. fluct.901 REAL(wp), DIMENSION(:,:), POINTER :: U_star ! turb. scale of velocity fluct.902 REAL(wp), DIMENSION(:,:), POINTER :: L ! Monin-Obukov length [m]903 716 REAL(wp), DIMENSION(:,:), POINTER :: zeta_u ! stability parameter at height zu 904 717 REAL(wp), DIMENSION(:,:), POINTER :: zeta_t ! stability parameter at height zt 905 REAL(wp), DIMENSION(:,:), POINTER :: U_n10 ! neutral wind velocity at 10m [m] 906 REAL(wp), DIMENSION(:,:), POINTER :: xlogt, xct, zpsi_hu, zpsi_ht, zpsi_m 907 908 INTEGER , DIMENSION(:,:), POINTER :: stab ! 1st stability test integer 718 REAL(wp), DIMENSION(:,:), POINTER :: zpsi_h_u, zpsi_m_u 719 REAL(wp), DIMENSION(:,:), POINTER :: ztmp0, ztmp1, ztmp2 720 REAL(wp), DIMENSION(:,:), POINTER :: stab ! 1st stability test integer 909 721 !!---------------------------------------------------------------------- 910 ! 911 IF( nn_timing == 1 ) CALL timing_start('TURB_CORE_2Z') 912 ! 913 CALL wrk_alloc( jpi,jpj, dU10, dT, dq, Cd_n10, Ce_n10, Ch_n10, sqrt_Cd_n10, sqrt_Cd, L ) 914 CALL wrk_alloc( jpi,jpj, T_vpot, T_star, q_star, U_star, zeta_u, zeta_t, U_n10 ) 915 CALL wrk_alloc( jpi,jpj, xlogt, xct, zpsi_hu, zpsi_ht, zpsi_m ) 916 CALL wrk_alloc( jpi,jpj, stab ) ! interger 917 918 !! Initial air/sea differences 919 dU10 = max(0.5, dU) ! we don't want to fall under 0.5 m/s 920 dT = T_zt - sst 921 dq = q_zt - q_sat 922 923 !! Neutral Drag Coefficient : 924 stab = 0.5 + sign(0.5,dT) ! stab = 1 if dT > 0 -> STABLE 925 IF( ln_cdgw ) THEN 926 cdn_wave = cdn_wave - rsmall*(tmask(:,:,1)-1) 927 Cd_n10(:,:) = cdn_wave 722 723 IF( nn_timing == 1 ) CALL timing_start('turb_core_2z') 724 725 CALL wrk_alloc( jpi,jpj, U_zu, Ce_n10, Ch_n10, sqrt_Cd_n10, sqrt_Cd ) 726 CALL wrk_alloc( jpi,jpj, zeta_u, stab ) 727 CALL wrk_alloc( jpi,jpj, zpsi_h_u, zpsi_m_u, ztmp0, ztmp1, ztmp2 ) 728 729 l_zt_equal_zu = .FALSE. 730 IF( ABS(zu - zt) < 0.01 ) l_zt_equal_zu = .TRUE. ! testing "zu == zt" is risky with double precision 731 732 IF( .NOT. l_zt_equal_zu ) CALL wrk_alloc( jpi,jpj, zeta_t ) 733 734 U_zu = MAX( 0.5 , dU ) ! relative wind speed at zu (normally 10m), we don't want to fall under 0.5 m/s 735 736 !! First guess of stability: 737 ztmp0 = T_zt*(1. + 0.608*q_zt) - sst*(1. + 0.608*q_sat) ! air-sea difference of virtual pot. temp. at zt 738 stab = 0.5 + sign(0.5,ztmp0) ! stab = 1 if dTv > 0 => STABLE, 0 if unstable 739 740 !! Neutral coefficients at 10m: 741 IF( ln_cdgw ) THEN ! wave drag case 742 cdn_wave(:,:) = cdn_wave(:,:) + rsmall * ( 1._wp - tmask(:,:,1) ) 743 ztmp0 (:,:) = cdn_wave(:,:) 928 744 ELSE 929 Cd_n10 = 1.e-3*( 2.7/dU10 + 0.142 + dU10/13.09 )745 ztmp0 = cd_neutral_10m( U_zu ) 930 746 ENDIF 931 sqrt_Cd_n10 = sqrt(Cd_n10)747 sqrt_Cd_n10 = SQRT( ztmp0 ) 932 748 Ce_n10 = 1.e-3*( 34.6 * sqrt_Cd_n10 ) 933 749 Ch_n10 = 1.e-3*sqrt_Cd_n10*(18.*stab + 32.7*(1. - stab)) 934 750 935 751 !! Initializing transf. coeff. with their first guess neutral equivalents : 936 Cd = Cd_n10 ; Ce = Ce_n10 ; Ch = Ch_n10 ; sqrt_Cd = sqrt(Cd)937 938 !! Initializing z_u values with z_t values:939 T_zu = T_zt ;q_zu = q_zt752 Cd = ztmp0 ; Ce = Ce_n10 ; Ch = Ch_n10 ; sqrt_Cd = sqrt_Cd_n10 753 754 !! Initializing values at z_u with z_t values: 755 T_zu = T_zt ; q_zu = q_zt 940 756 941 757 !! * Now starting iteration loop 942 758 DO j_itt=1, nb_itt 943 dT = T_zu - sst ; dq = q_zu - q_sat ! Updating air/sea differences 944 T_vpot = T_zu*(1. + 0.608*q_zu) ! Updating virtual potential temperature at zu 945 U_star = sqrt_Cd*dU10 ! Updating turbulent scales : (L & Y eq. (7)) 946 T_star = Ch/sqrt_Cd*dT ! 947 q_star = Ce/sqrt_Cd*dq ! 948 !! 949 L = (U_star*U_star) & ! Estimate the Monin-Obukov length at height zu 950 & / (kappa*grav/T_vpot*(T_star*(1.+0.608*q_zu) + 0.608*T_zu*q_star)) 759 ! 760 ztmp1 = T_zu - sst ! Updating air/sea differences 761 ztmp2 = q_zu - q_sat 762 763 ! Updating turbulent scales : (L&Y 2004 eq. (7)) 764 ztmp1 = Ch/sqrt_Cd*ztmp1 ! theta* 765 ztmp2 = Ce/sqrt_Cd*ztmp2 ! q* 766 767 ztmp0 = T_zu*(1. + 0.608*q_zu) ! virtual potential temperature at zu 768 769 ! Estimate the inverse of Monin-Obukov length (1/L) at height zu: 770 ztmp0 = (vkarmn*grav/ztmp0*(ztmp1*(1.+0.608*q_zu) + 0.608*T_zu*ztmp2)) / (Cd*U_zu*U_zu) 771 ! ( Cd*U_zu*U_zu is U*^2 at zu) 772 951 773 !! Stability parameters : 952 zeta_u = zu/L ; zeta_u = sign( min(abs(zeta_u),10.0), zeta_u ) 953 zeta_t = zt/L ; zeta_t = sign( min(abs(zeta_t),10.0), zeta_t ) 954 zpsi_hu = psi_h(zeta_u) 955 zpsi_ht = psi_h(zeta_t) 956 zpsi_m = psi_m(zeta_u) 957 !! 958 !! Shifting the wind speed to 10m and neutral stability : (L & Y eq.(9a)) 959 ! U_n10 = dU10/(1. + sqrt_Cd_n10/kappa*(log(zu/10.) - psi_m(zeta_u))) 960 U_n10 = dU10/(1. + sqrt_Cd_n10/kappa*(log(zu/10.) - zpsi_m)) 961 !! 962 !! Shifting temperature and humidity at zu : (L & Y eq. (9b-9c)) 963 ! T_zu = T_zt - T_star/kappa*(log(zt/zu) + psi_h(zeta_u) - psi_h(zeta_t)) 964 T_zu = T_zt - T_star/kappa*(log(zt/zu) + zpsi_hu - zpsi_ht) 965 ! q_zu = q_zt - q_star/kappa*(log(zt/zu) + psi_h(zeta_u) - psi_h(zeta_t)) 966 q_zu = q_zt - q_star/kappa*(log(zt/zu) + zpsi_hu - zpsi_ht) 967 !! 968 !! q_zu cannot have a negative value : forcing 0 969 stab = 0.5 + sign(0.5,q_zu) ; q_zu = stab*q_zu 970 !! 971 IF( ln_cdgw ) THEN 972 sqrt_Cd=kappa/((kappa/sqrt_Cd_n10) - zpsi_m) ; Cd=sqrt_Cd*sqrt_Cd; 774 zeta_u = zu*ztmp0 ; zeta_u = sign( min(abs(zeta_u),10.0), zeta_u ) 775 zpsi_h_u = psi_h( zeta_u ) 776 zpsi_m_u = psi_m( zeta_u ) 777 778 !! Shifting temperature and humidity at zu (L&Y 2004 eq. (9b-9c)) 779 IF ( .NOT. l_zt_equal_zu ) THEN 780 zeta_t = zt*ztmp0 ; zeta_t = sign( min(abs(zeta_t),10.0), zeta_t ) 781 stab = LOG(zu/zt) - zpsi_h_u + psi_h(zeta_t) ! stab just used as temp array!!! 782 T_zu = T_zt + ztmp1/vkarmn*stab ! ztmp1 is still theta* 783 q_zu = q_zt + ztmp2/vkarmn*stab ! ztmp2 is still q* 784 q_zu = max(0., q_zu) 785 END IF 786 787 IF( ln_cdgw ) THEN ! surface wave case 788 sqrt_Cd = vkarmn / ( vkarmn / sqrt_Cd_n10 - zpsi_m_u ) 789 Cd = sqrt_Cd * sqrt_Cd 973 790 ELSE 974 !! Updating the neutral 10m transfer coefficients : 975 Cd_n10 = 1.e-3 * (2.7/U_n10 + 0.142 + U_n10/13.09) ! L & Y eq. (6a) 976 sqrt_Cd_n10 = sqrt(Cd_n10) 977 Ce_n10 = 1.e-3 * (34.6 * sqrt_Cd_n10) ! L & Y eq. (6b) 978 stab = 0.5 + sign(0.5,zeta_u) 979 Ch_n10 = 1.e-3*sqrt_Cd_n10*(18.*stab + 32.7*(1.-stab)) ! L & Y eq. (6c-6d) 980 !! 981 !! 982 !! Shifting the neutral 10m transfer coefficients to (zu,zeta_u) : 983 xct = 1. + sqrt_Cd_n10/kappa*(log(zu/10.) - zpsi_m) ! L & Y eq. (10a) 984 Cd = Cd_n10/(xct*xct) ; sqrt_Cd = sqrt(Cd) 791 ! Update neutral wind speed at 10m and neutral Cd at 10m (L&Y 2004 eq. 9a)... 792 ! In very rare low-wind conditions, the old way of estimating the 793 ! neutral wind speed at 10m leads to a negative value that causes the code 794 ! to crash. To prevent this a threshold of 0.25m/s is imposed. 795 ztmp0 = MAX( 0.25 , U_zu/(1. + sqrt_Cd_n10/vkarmn*(LOG(zu/10.) - zpsi_m_u)) ) ! U_n10 796 ztmp0 = cd_neutral_10m(ztmp0) ! Cd_n10 797 sqrt_Cd_n10 = sqrt(ztmp0) 798 799 Ce_n10 = 1.e-3 * (34.6 * sqrt_Cd_n10) ! L&Y 2004 eq. (6b) 800 stab = 0.5 + sign(0.5,zeta_u) ! update stability 801 Ch_n10 = 1.e-3*sqrt_Cd_n10*(18.*stab + 32.7*(1. - stab)) ! L&Y 2004 eq. (6c-6d) 802 803 !! Update of transfer coefficients: 804 ztmp1 = 1. + sqrt_Cd_n10/vkarmn*(LOG(zu/10.) - zpsi_m_u) ! L&Y 2004 eq. (10a) 805 Cd = ztmp0 / ( ztmp1*ztmp1 ) 806 sqrt_Cd = SQRT( Cd ) 985 807 ENDIF 986 !! 987 xlogt = log(zu/10.) - zpsi_hu 988 !! 989 xct = 1. + Ch_n10*xlogt/kappa/sqrt_Cd_n10 ! L & Y eq. (10b) 990 Ch = Ch_n10*sqrt_Cd/sqrt_Cd_n10/xct 991 !! 992 xct = 1. + Ce_n10*xlogt/kappa/sqrt_Cd_n10 ! L & Y eq. (10c) 993 Ce = Ce_n10*sqrt_Cd/sqrt_Cd_n10/xct 994 !! 995 !! 808 ! 809 ztmp0 = (LOG(zu/10.) - zpsi_h_u) / vkarmn / sqrt_Cd_n10 810 ztmp2 = sqrt_Cd / sqrt_Cd_n10 811 ztmp1 = 1. + Ch_n10*ztmp0 812 Ch = Ch_n10*ztmp2 / ztmp1 ! L&Y 2004 eq. (10b) 813 ! 814 ztmp1 = 1. + Ce_n10*ztmp0 815 Ce = Ce_n10*ztmp2 / ztmp1 ! L&Y 2004 eq. (10c) 816 ! 996 817 END DO 997 !! 998 CALL wrk_dealloc( jpi,jpj, dU10, dT, dq, Cd_n10, Ce_n10, Ch_n10, sqrt_Cd_n10, sqrt_Cd, L ) 999 CALL wrk_dealloc( jpi,jpj, T_vpot, T_star, q_star, U_star, zeta_u, zeta_t, U_n10 ) 1000 CALL wrk_dealloc( jpi,jpj, xlogt, xct, zpsi_hu, zpsi_ht, zpsi_m ) 1001 CALL wrk_dealloc( jpi,jpj, stab ) ! interger 1002 ! 1003 IF( nn_timing == 1 ) CALL timing_stop('TURB_CORE_2Z') 1004 ! 1005 END SUBROUTINE TURB_CORE_2Z 1006 1007 1008 FUNCTION psi_m(zta) !! Psis, L & Y eq. (8c), (8d), (8e) 818 819 CALL wrk_dealloc( jpi,jpj, U_zu, Ce_n10, Ch_n10, sqrt_Cd_n10, sqrt_Cd ) 820 CALL wrk_dealloc( jpi,jpj, zeta_u, stab ) 821 CALL wrk_dealloc( jpi,jpj, zpsi_h_u, zpsi_m_u, ztmp0, ztmp1, ztmp2 ) 822 823 IF( .NOT. l_zt_equal_zu ) CALL wrk_dealloc( jpi,jpj, zeta_t ) 824 825 IF( nn_timing == 1 ) CALL timing_stop('turb_core_2z') 826 ! 827 END SUBROUTINE turb_core_2z 828 829 830 FUNCTION cd_neutral_10m( zw10 ) 831 !!---------------------------------------------------------------------- 832 !! Estimate of the neutral drag coefficient at 10m as a function 833 !! of neutral wind speed at 10m 834 !! 835 !! Origin: Large & Yeager 2008 eq.(11a) and eq.(11b) 836 !! 837 !! Author: L. Brodeau, june 2014 838 !!---------------------------------------------------------------------- 839 REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: zw10 ! scalar wind speed at 10m (m/s) 840 REAL(wp), DIMENSION(jpi,jpj) :: cd_neutral_10m 841 ! 842 REAL(wp), DIMENSION(:,:), POINTER :: rgt33 843 !!---------------------------------------------------------------------- 844 ! 845 CALL wrk_alloc( jpi,jpj, rgt33 ) 846 ! 847 !! When wind speed > 33 m/s => Cyclone conditions => special treatment 848 rgt33 = 0.5_wp + SIGN( 0.5_wp, (zw10 - 33._wp) ) ! If zw10 < 33. => 0, else => 1 849 cd_neutral_10m = 1.e-3 * ( & 850 & (1._wp - rgt33)*( 2.7_wp/zw10 + 0.142_wp + zw10/13.09_wp - 3.14807E-10*zw10**6) & ! zw10< 33. 851 & + rgt33 * 2.34 ) ! zw10 >= 33. 852 ! 853 CALL wrk_dealloc( jpi,jpj, rgt33) 854 ! 855 END FUNCTION cd_neutral_10m 856 857 858 FUNCTION psi_m(pta) !! Psis, L&Y 2004 eq. (8c), (8d), (8e) 1009 859 !------------------------------------------------------------------------------- 1010 REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: zta 1011 1012 REAL(wp), PARAMETER :: pi = 3.141592653589793_wp 860 ! universal profile stability function for momentum 861 !------------------------------------------------------------------------------- 862 REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: pta 863 ! 1013 864 REAL(wp), DIMENSION(jpi,jpj) :: psi_m 1014 865 REAL(wp), DIMENSION(:,:), POINTER :: X2, X, stabit 1015 866 !------------------------------------------------------------------------------- 1016 867 ! 1017 868 CALL wrk_alloc( jpi,jpj, X2, X, stabit ) 1018 1019 X2 = sqrt(abs(1. - 16.*zta)) ; X2 = max(X2 , 1.0) ; X = sqrt(X2)1020 stabit = 0.5 + sign(0.5,zta)1021 psi_m = -5.* zta*stabit & ! Stable1022 & + (1. - stabit)*(2 *log((1. + X)/2) + log((1. + X2)/2) - 2*atan(X) + pi/2) ! Unstable1023 869 ! 870 X2 = SQRT( ABS( 1. - 16.*pta ) ) ; X2 = MAX( X2 , 1. ) ; X = SQRT( X2 ) 871 stabit = 0.5 + SIGN( 0.5 , pta ) 872 psi_m = -5.*pta*stabit & ! Stable 873 & + (1. - stabit)*(2.*LOG((1. + X)*0.5) + LOG((1. + X2)*0.5) - 2.*ATAN(X) + rpi*0.5) ! Unstable 874 ! 1024 875 CALL wrk_dealloc( jpi,jpj, X2, X, stabit ) 1025 876 ! 1026 1027 1028 1029 FUNCTION psi_h( zta ) !! Psis, L & Yeq. (8c), (8d), (8e)877 END FUNCTION psi_m 878 879 880 FUNCTION psi_h( pta ) !! Psis, L&Y 2004 eq. (8c), (8d), (8e) 1030 881 !------------------------------------------------------------------------------- 1031 REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: zta 882 ! universal profile stability function for temperature and humidity 883 !------------------------------------------------------------------------------- 884 REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: pta 1032 885 ! 1033 886 REAL(wp), DIMENSION(jpi,jpj) :: psi_h 1034 REAL(wp), DIMENSION(:,:), POINTER :: X2, X, stabit887 REAL(wp), DIMENSION(:,:), POINTER :: X2, X, stabit 1035 888 !------------------------------------------------------------------------------- 1036 889 ! 1037 890 CALL wrk_alloc( jpi,jpj, X2, X, stabit ) 1038 1039 X2 = sqrt(abs(1. - 16.*zta)) ; X2 = max(X2 , 1.) ; X = sqrt(X2)1040 stabit = 0.5 + sign(0.5,zta)1041 psi_h = -5.* zta*stabit& ! Stable1042 & + (1. - stabit)*(2.* log( (1. + X2)/2. ))! Unstable1043 891 ! 892 X2 = SQRT( ABS( 1. - 16.*pta ) ) ; X2 = MAX( X2 , 1. ) ; X = SQRT( X2 ) 893 stabit = 0.5 + SIGN( 0.5 , pta ) 894 psi_h = -5.*pta*stabit & ! Stable 895 & + (1. - stabit)*(2.*LOG( (1. + X2)*0.5 )) ! Unstable 896 ! 1044 897 CALL wrk_dealloc( jpi,jpj, X2, X, stabit ) 1045 898 ! 1046 1047 899 END FUNCTION psi_h 900 1048 901 !!====================================================================== 1049 902 END MODULE sbcblk_core
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