Changeset 6497 for trunk/NEMOGCM/NEMO
- Timestamp:
- 2016-04-27T09:33:46+02:00 (8 years ago)
- Location:
- trunk/NEMOGCM/NEMO/OPA_SRC/ZDF
- Files:
-
- 3 edited
-
zdfddm.F90 (modified) (1 diff)
-
zdftke.F90 (modified) (3 diffs)
-
zdftmx.F90 (modified) (1 diff)
Legend:
- Unmodified
- Added
- Removed
-
trunk/NEMOGCM/NEMO/OPA_SRC/ZDF/zdfddm.F90
r6140 r6497 174 174 & + 0.15 * zrau(ji,jj) * zmskd2(ji,jj) ) 175 175 ! add to the eddy viscosity coef. previously computed 176 # if defined key_zdftmx_new 177 ! key_zdftmx_new: New internal wave-driven param: use avs value computed by zdftmx 178 avs (ji,jj,jk) = avs(ji,jj,jk) + zavfs + zavds 179 # else 176 180 avs (ji,jj,jk) = avt(ji,jj,jk) + zavfs + zavds 181 # endif 177 182 avt (ji,jj,jk) = avt(ji,jj,jk) + zavft + zavdt 178 183 avm (ji,jj,jk) = avm(ji,jj,jk) + MAX( zavft + zavdt, zavfs + zavds ) -
trunk/NEMOGCM/NEMO/OPA_SRC/ZDF/zdftke.F90
r6140 r6497 323 323 zwlc = zind * rn_lc * zus * SIN( rpi * gdepw_n(ji,jj,jk) / zhlc(ji,jj) ) 324 324 ! ! TKE Langmuir circulation source term 325 en(ji,jj,jk) = en(ji,jj,jk) + rdt * (1._wp - fr_i(ji,jj) ) * ( zwlc * zwlc * zwlc ) / zhlc(ji,jj) * wmask(ji,jj,jk) * tmask(ji,jj,1) 325 en(ji,jj,jk) = en(ji,jj,jk) + rdt * (1._wp - fr_i(ji,jj) ) * ( zwlc * zwlc * zwlc ) & 326 & / zhlc(ji,jj) * wmask(ji,jj,jk) * tmask(ji,jj,1) 326 327 END DO 327 328 END DO … … 375 376 DO ji = fs_2, fs_jpim1 ! vector opt. 376 377 zcof = zfact1 * tmask(ji,jj,jk) 378 # if defined key_zdftmx_new 379 ! key_zdftmx_new: New internal wave-driven param: set a minimum value for Kz on TKE (ensure numerical stability) 380 zzd_up = zcof * MAX( avm(ji,jj,jk+1) + avm(ji,jj,jk), 2.e-5_wp ) & ! upper diagonal 381 & / ( e3t_n(ji,jj,jk ) * e3w_n(ji,jj,jk ) ) 382 zzd_lw = zcof * MAX( avm(ji,jj,jk) + avm(ji,jj,jk-1), 2.e-5_wp ) & ! lower diagonal 383 & / ( e3t_n(ji,jj,jk-1) * e3w_n(ji,jj,jk ) ) 384 # else 377 385 zzd_up = zcof * ( avm (ji,jj,jk+1) + avm (ji,jj,jk ) ) & ! upper diagonal 378 386 & / ( e3t_n(ji,jj,jk ) * e3w_n(ji,jj,jk ) ) 379 387 zzd_lw = zcof * ( avm (ji,jj,jk ) + avm (ji,jj,jk-1) ) & ! lower diagonal 380 388 & / ( e3t_n(ji,jj,jk-1) * e3w_n(ji,jj,jk ) ) 389 # endif 381 390 ! ! shear prod. at w-point weightened by mask 382 391 zesh2 = ( z3du(ji-1,jj,jk) + z3du(ji,jj,jk) ) / MAX( 1._wp , umask(ji-1,jj,jk) + umask(ji,jj,jk) ) & … … 732 741 ! 733 742 ri_cri = 2._wp / ( 2._wp + rn_ediss / rn_ediff ) ! resulting critical Richardson number 743 # if defined key_zdftmx_new 744 ! key_zdftmx_new: New internal wave-driven param: specified value of rn_emin & rmxl_min are used 745 rn_emin = 1.e-10_wp 746 rmxl_min = 1.e-03_wp 747 IF(lwp) THEN ! Control print 748 WRITE(numout,*) 749 WRITE(numout,*) 'zdf_tke_init : New tidal mixing case: force rn_emin = 1.e-10 and rmxl_min = 1.e-3 ' 750 WRITE(numout,*) '~~~~~~~~~~~~' 751 ENDIF 752 # else 734 753 rmxl_min = 1.e-6_wp / ( rn_ediff * SQRT( rn_emin ) ) ! resulting minimum length to recover molecular viscosity 754 # endif 735 755 ! 736 756 IF(lwp) THEN !* Control print -
trunk/NEMOGCM/NEMO/OPA_SRC/ZDF/zdftmx.F90
r6140 r6497 541 541 END SUBROUTINE zdf_tmx_init 542 542 543 #elif defined key_zdftmx_new 544 !!---------------------------------------------------------------------- 545 !! 'key_zdftmx_new' Internal wave-driven vertical mixing 546 !!---------------------------------------------------------------------- 547 !! zdf_tmx : global momentum & tracer Kz with wave induced Kz 548 !! zdf_tmx_init : global momentum & tracer Kz with wave induced Kz 549 !!---------------------------------------------------------------------- 550 USE oce ! ocean dynamics and tracers variables 551 USE dom_oce ! ocean space and time domain variables 552 USE zdf_oce ! ocean vertical physics variables 553 USE zdfddm ! ocean vertical physics: double diffusive mixing 554 USE lbclnk ! ocean lateral boundary conditions (or mpp link) 555 USE eosbn2 ! ocean equation of state 556 USE phycst ! physical constants 557 USE prtctl ! Print control 558 USE in_out_manager ! I/O manager 559 USE iom ! I/O Manager 560 USE lib_mpp ! MPP library 561 USE wrk_nemo ! work arrays 562 USE timing ! Timing 563 USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) 564 565 IMPLICIT NONE 566 PRIVATE 567 568 PUBLIC zdf_tmx ! called in step module 569 PUBLIC zdf_tmx_init ! called in nemogcm module 570 PUBLIC zdf_tmx_alloc ! called in nemogcm module 571 572 LOGICAL, PUBLIC, PARAMETER :: lk_zdftmx = .TRUE. !: wave-driven mixing flag 573 574 ! !!* Namelist namzdf_tmx : internal wave-driven mixing * 575 INTEGER :: nn_zpyc ! pycnocline-intensified mixing energy proportional to N (=1) or N^2 (=2) 576 LOGICAL :: ln_mevar ! variable (=T) or constant (=F) mixing efficiency 577 LOGICAL :: ln_tsdiff ! account for differential T/S wave-driven mixing (=T) or not (=F) 578 579 REAL(wp) :: r1_6 = 1._wp / 6._wp 580 581 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ebot_tmx ! power available from high-mode wave breaking (W/m2) 582 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: epyc_tmx ! power available from low-mode, pycnocline-intensified wave breaking (W/m2) 583 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ecri_tmx ! power available from low-mode, critical slope wave breaking (W/m2) 584 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hbot_tmx ! WKB decay scale for high-mode energy dissipation (m) 585 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hcri_tmx ! decay scale for low-mode critical slope dissipation (m) 586 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: emix_tmx ! local energy density available for mixing (W/kg) 587 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: bflx_tmx ! buoyancy flux Kz * N^2 (W/kg) 588 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: pcmap_tmx ! vertically integrated buoyancy flux (W/m2) 589 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: zav_ratio ! S/T diffusivity ratio (only for ln_tsdiff=T) 590 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: zav_wave ! Internal wave-induced diffusivity 591 592 !! * Substitutions 593 # include "zdfddm_substitute.h90" 594 # include "vectopt_loop_substitute.h90" 595 !!---------------------------------------------------------------------- 596 !! NEMO/OPA 4.0 , NEMO Consortium (2016) 597 !! $Id$ 598 !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) 599 !!---------------------------------------------------------------------- 600 CONTAINS 601 602 INTEGER FUNCTION zdf_tmx_alloc() 603 !!---------------------------------------------------------------------- 604 !! *** FUNCTION zdf_tmx_alloc *** 605 !!---------------------------------------------------------------------- 606 ALLOCATE( ebot_tmx(jpi,jpj), epyc_tmx(jpi,jpj), ecri_tmx(jpi,jpj) , & 607 & hbot_tmx(jpi,jpj), hcri_tmx(jpi,jpj), emix_tmx(jpi,jpj,jpk), & 608 & bflx_tmx(jpi,jpj,jpk), pcmap_tmx(jpi,jpj), zav_ratio(jpi,jpj,jpk), & 609 & zav_wave(jpi,jpj,jpk), STAT=zdf_tmx_alloc ) 610 ! 611 IF( lk_mpp ) CALL mpp_sum ( zdf_tmx_alloc ) 612 IF( zdf_tmx_alloc /= 0 ) CALL ctl_warn('zdf_tmx_alloc: failed to allocate arrays') 613 END FUNCTION zdf_tmx_alloc 614 615 616 SUBROUTINE zdf_tmx( kt ) 617 !!---------------------------------------------------------------------- 618 !! *** ROUTINE zdf_tmx *** 619 !! 620 !! ** Purpose : add to the vertical mixing coefficients the effect of 621 !! breaking internal waves. 622 !! 623 !! ** Method : - internal wave-driven vertical mixing is given by: 624 !! Kz_wave = min( 100 cm2/s, f( Reb = emix_tmx /( Nu * N^2 ) ) 625 !! where emix_tmx is the 3D space distribution of the wave-breaking 626 !! energy and Nu the molecular kinematic viscosity. 627 !! The function f(Reb) is linear (constant mixing efficiency) 628 !! if the namelist parameter ln_mevar = F and nonlinear if ln_mevar = T. 629 !! 630 !! - Compute emix_tmx, the 3D power density that allows to compute 631 !! Reb and therefrom the wave-induced vertical diffusivity. 632 !! This is divided into three components: 633 !! 1. Bottom-intensified low-mode dissipation at critical slopes 634 !! emix_tmx(z) = ( ecri_tmx / rau0 ) * EXP( -(H-z)/hcri_tmx ) 635 !! / ( 1. - EXP( - H/hcri_tmx ) ) * hcri_tmx 636 !! where hcri_tmx is the characteristic length scale of the bottom 637 !! intensification, ecri_tmx a map of available power, and H the ocean depth. 638 !! 2. Pycnocline-intensified low-mode dissipation 639 !! emix_tmx(z) = ( epyc_tmx / rau0 ) * ( sqrt(rn2(z))^nn_zpyc ) 640 !! / SUM( sqrt(rn2(z))^nn_zpyc * e3w(z) ) 641 !! where epyc_tmx is a map of available power, and nn_zpyc 642 !! is the chosen stratification-dependence of the internal wave 643 !! energy dissipation. 644 !! 3. WKB-height dependent high mode dissipation 645 !! emix_tmx(z) = ( ebot_tmx / rau0 ) * rn2(z) * EXP(-z_wkb(z)/hbot_tmx) 646 !! / SUM( rn2(z) * EXP(-z_wkb(z)/hbot_tmx) * e3w(z) ) 647 !! where hbot_tmx is the characteristic length scale of the WKB bottom 648 !! intensification, ebot_tmx is a map of available power, and z_wkb is the 649 !! WKB-stretched height above bottom defined as 650 !! z_wkb(z) = H * SUM( sqrt(rn2(z'>=z)) * e3w(z'>=z) ) 651 !! / SUM( sqrt(rn2(z')) * e3w(z') ) 652 !! 653 !! - update the model vertical eddy viscosity and diffusivity: 654 !! avt = avt + av_wave 655 !! avm = avm + av_wave 656 !! avmu = avmu + mi(av_wave) 657 !! avmv = avmv + mj(av_wave) 658 !! 659 !! - if namelist parameter ln_tsdiff = T, account for differential mixing: 660 !! avs = avt + av_wave * diffusivity_ratio(Reb) 661 !! 662 !! ** Action : - Define emix_tmx used to compute internal wave-induced mixing 663 !! - avt, avs, avm, avmu, avmv increased by internal wave-driven mixing 664 !! 665 !! References : de Lavergne et al. 2015, JPO; 2016, in prep. 666 !!---------------------------------------------------------------------- 667 INTEGER, INTENT(in) :: kt ! ocean time-step 668 ! 669 INTEGER :: ji, jj, jk ! dummy loop indices 670 REAL(wp) :: ztpc ! scalar workspace 671 REAL(wp), DIMENSION(:,:) , POINTER :: zfact ! Used for vertical structure 672 REAL(wp), DIMENSION(:,:) , POINTER :: zhdep ! Ocean depth 673 REAL(wp), DIMENSION(:,:,:), POINTER :: zwkb ! WKB-stretched height above bottom 674 REAL(wp), DIMENSION(:,:,:), POINTER :: zweight ! Weight for high mode vertical distribution 675 REAL(wp), DIMENSION(:,:,:), POINTER :: znu_t ! Molecular kinematic viscosity (T grid) 676 REAL(wp), DIMENSION(:,:,:), POINTER :: znu_w ! Molecular kinematic viscosity (W grid) 677 REAL(wp), DIMENSION(:,:,:), POINTER :: zReb ! Turbulence intensity parameter 678 !!---------------------------------------------------------------------- 679 ! 680 IF( nn_timing == 1 ) CALL timing_start('zdf_tmx') 681 ! 682 CALL wrk_alloc( jpi,jpj, zfact, zhdep ) 683 CALL wrk_alloc( jpi,jpj,jpk, zwkb, zweight, znu_t, znu_w, zReb ) 684 685 ! ! ----------------------------- ! 686 ! ! Internal wave-driven mixing ! (compute zav_wave) 687 ! ! ----------------------------- ! 688 ! 689 ! !* Critical slope mixing: distribute energy over the time-varying ocean depth, 690 ! using an exponential decay from the seafloor. 691 DO jj = 1, jpj ! part independent of the level 692 DO ji = 1, jpi 693 zhdep(ji,jj) = gdepw_0(ji,jj,mbkt(ji,jj)+1) ! depth of the ocean 694 zfact(ji,jj) = rau0 * ( 1._wp - EXP( -zhdep(ji,jj) / hcri_tmx(ji,jj) ) ) 695 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = ecri_tmx(ji,jj) / zfact(ji,jj) 696 END DO 697 END DO 698 699 DO jk = 2, jpkm1 ! complete with the level-dependent part 700 emix_tmx(:,:,jk) = zfact(:,:) * ( EXP( ( gde3w_n(:,:,jk ) - zhdep(:,:) ) / hcri_tmx(:,:) ) & 701 & - EXP( ( gde3w_n(:,:,jk-1) - zhdep(:,:) ) / hcri_tmx(:,:) ) ) * wmask(:,:,jk) & 702 & / ( gde3w_n(:,:,jk) - gde3w_n(:,:,jk-1) ) 703 END DO 704 705 ! !* Pycnocline-intensified mixing: distribute energy over the time-varying 706 ! !* ocean depth as proportional to sqrt(rn2)^nn_zpyc 707 708 SELECT CASE ( nn_zpyc ) 709 710 CASE ( 1 ) ! Dissipation scales as N (recommended) 711 712 zfact(:,:) = 0._wp 713 DO jk = 2, jpkm1 ! part independent of the level 714 zfact(:,:) = zfact(:,:) + e3w_n(:,:,jk) * SQRT( MAX( 0._wp, rn2(:,:,jk) ) ) * wmask(:,:,jk) 715 END DO 716 717 DO jj = 1, jpj 718 DO ji = 1, jpi 719 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = epyc_tmx(ji,jj) / ( rau0 * zfact(ji,jj) ) 720 END DO 721 END DO 722 723 DO jk = 2, jpkm1 ! complete with the level-dependent part 724 emix_tmx(:,:,jk) = emix_tmx(:,:,jk) + zfact(:,:) * SQRT( MAX( 0._wp, rn2(:,:,jk) ) ) * wmask(:,:,jk) 725 END DO 726 727 CASE ( 2 ) ! Dissipation scales as N^2 728 729 zfact(:,:) = 0._wp 730 DO jk = 2, jpkm1 ! part independent of the level 731 zfact(:,:) = zfact(:,:) + e3w_n(:,:,jk) * MAX( 0._wp, rn2(:,:,jk) ) * wmask(:,:,jk) 732 END DO 733 734 DO jj= 1, jpj 735 DO ji = 1, jpi 736 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = epyc_tmx(ji,jj) / ( rau0 * zfact(ji,jj) ) 737 END DO 738 END DO 739 740 DO jk = 2, jpkm1 ! complete with the level-dependent part 741 emix_tmx(:,:,jk) = emix_tmx(:,:,jk) + zfact(:,:) * MAX( 0._wp, rn2(:,:,jk) ) * wmask(:,:,jk) 742 END DO 743 744 END SELECT 745 746 ! !* WKB-height dependent mixing: distribute energy over the time-varying 747 ! !* ocean depth as proportional to rn2 * exp(-z_wkb/rn_hbot) 748 749 zwkb(:,:,:) = 0._wp 750 zfact(:,:) = 0._wp 751 DO jk = 2, jpkm1 752 zfact(:,:) = zfact(:,:) + e3w_n(:,:,jk) * SQRT( MAX( 0._wp, rn2(:,:,jk) ) ) * wmask(:,:,jk) 753 zwkb(:,:,jk) = zfact(:,:) 754 END DO 755 756 DO jk = 2, jpkm1 757 DO jj = 1, jpj 758 DO ji = 1, jpi 759 IF( zfact(ji,jj) /= 0 ) zwkb(ji,jj,jk) = zhdep(ji,jj) * ( zfact(ji,jj) - zwkb(ji,jj,jk) ) & 760 & * tmask(ji,jj,jk) / zfact(ji,jj) 761 END DO 762 END DO 763 END DO 764 zwkb(:,:,1) = zhdep(:,:) * tmask(:,:,1) 765 766 zweight(:,:,:) = 0._wp 767 DO jk = 2, jpkm1 768 zweight(:,:,jk) = MAX( 0._wp, rn2(:,:,jk) ) * hbot_tmx(:,:) * wmask(:,:,jk) & 769 & * ( EXP( -zwkb(:,:,jk) / hbot_tmx(:,:) ) - EXP( -zwkb(:,:,jk-1) / hbot_tmx(:,:) ) ) 770 END DO 771 772 zfact(:,:) = 0._wp 773 DO jk = 2, jpkm1 ! part independent of the level 774 zfact(:,:) = zfact(:,:) + zweight(:,:,jk) 775 END DO 776 777 DO jj = 1, jpj 778 DO ji = 1, jpi 779 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = ebot_tmx(ji,jj) / ( rau0 * zfact(ji,jj) ) 780 END DO 781 END DO 782 783 DO jk = 2, jpkm1 ! complete with the level-dependent part 784 emix_tmx(:,:,jk) = emix_tmx(:,:,jk) + zweight(:,:,jk) * zfact(:,:) * wmask(:,:,jk) & 785 & / ( gde3w_n(:,:,jk) - gde3w_n(:,:,jk-1) ) 786 END DO 787 788 789 ! Calculate molecular kinematic viscosity 790 znu_t(:,:,:) = 1.e-4_wp * ( 17.91_wp - 0.53810_wp * tsn(:,:,:,jp_tem) + 0.00694_wp * tsn(:,:,:,jp_tem) * tsn(:,:,:,jp_tem) & 791 & + 0.02305_wp * tsn(:,:,:,jp_sal) ) * tmask(:,:,:) * r1_rau0 792 DO jk = 2, jpkm1 793 znu_w(:,:,jk) = 0.5_wp * ( znu_t(:,:,jk-1) + znu_t(:,:,jk) ) * wmask(:,:,jk) 794 END DO 795 796 ! Calculate turbulence intensity parameter Reb 797 DO jk = 2, jpkm1 798 zReb(:,:,jk) = emix_tmx(:,:,jk) / MAX( 1.e-20_wp, znu_w(:,:,jk) * rn2(:,:,jk) ) 799 END DO 800 801 ! Define internal wave-induced diffusivity 802 DO jk = 2, jpkm1 803 zav_wave(:,:,jk) = znu_w(:,:,jk) * zReb(:,:,jk) * r1_6 ! This corresponds to a constant mixing efficiency of 1/6 804 END DO 805 806 IF( ln_mevar ) THEN ! Variable mixing efficiency case : modify zav_wave in the 807 DO jk = 2, jpkm1 ! energetic (Reb > 480) and buoyancy-controlled (Reb <10.224 ) regimes 808 DO jj = 1, jpj 809 DO ji = 1, jpi 810 IF( zReb(ji,jj,jk) > 480.00_wp ) THEN 811 zav_wave(ji,jj,jk) = 3.6515_wp * znu_w(ji,jj,jk) * SQRT( zReb(ji,jj,jk) ) 812 ELSEIF( zReb(ji,jj,jk) < 10.224_wp ) THEN 813 zav_wave(ji,jj,jk) = 0.052125_wp * znu_w(ji,jj,jk) * zReb(ji,jj,jk) * SQRT( zReb(ji,jj,jk) ) 814 ENDIF 815 END DO 816 END DO 817 END DO 818 ENDIF 819 820 DO jk = 2, jpkm1 ! Bound diffusivity by molecular value and 100 cm2/s 821 zav_wave(:,:,jk) = MIN( MAX( 1.4e-7_wp, zav_wave(:,:,jk) ), 1.e-2_wp ) * wmask(:,:,jk) 822 END DO 823 824 IF( kt == nit000 ) THEN !* Control print at first time-step: diagnose the energy consumed by zav_wave 825 ztpc = 0._wp 826 DO jk = 2, jpkm1 827 DO jj = 1, jpj 828 DO ji = 1, jpi 829 ztpc = ztpc + e3w_n(ji,jj,jk) * e1e2t(ji,jj) & 830 & * MAX( 0._wp, rn2(ji,jj,jk) ) * zav_wave(ji,jj,jk) * wmask(ji,jj,jk) * tmask_i(ji,jj) 831 END DO 832 END DO 833 END DO 834 IF( lk_mpp ) CALL mpp_sum( ztpc ) 835 ztpc = rau0 * ztpc ! Global integral of rauo * Kz * N^2 = power contributing to mixing 836 837 IF(lwp) THEN 838 WRITE(numout,*) 839 WRITE(numout,*) 'zdf_tmx : Internal wave-driven mixing (tmx)' 840 WRITE(numout,*) '~~~~~~~ ' 841 WRITE(numout,*) 842 WRITE(numout,*) ' Total power consumption by av_wave: ztpc = ', ztpc * 1.e-12_wp, 'TW' 843 ENDIF 844 ENDIF 845 846 ! ! ----------------------- ! 847 ! ! Update mixing coefs ! 848 ! ! ----------------------- ! 849 ! 850 IF( ln_tsdiff ) THEN !* Option for differential mixing of salinity and temperature 851 DO jk = 2, jpkm1 ! Calculate S/T diffusivity ratio as a function of Reb 852 DO jj = 1, jpj 853 DO ji = 1, jpi 854 zav_ratio(ji,jj,jk) = ( 0.505_wp + 0.495_wp * & 855 & TANH( 0.92_wp * ( LOG10( MAX( 1.e-20_wp, zReb(ji,jj,jk) * 5._wp * r1_6 ) ) - 0.60_wp ) ) & 856 & ) * wmask(ji,jj,jk) 857 END DO 858 END DO 859 END DO 860 CALL iom_put( "av_ratio", zav_ratio ) 861 DO jk = 2, jpkm1 !* update momentum & tracer diffusivity with wave-driven mixing 862 fsavs(:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) * zav_ratio(:,:,jk) 863 avt (:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) 864 avm (:,:,jk) = avm(:,:,jk) + zav_wave(:,:,jk) 865 END DO 866 ! 867 ELSE !* update momentum & tracer diffusivity with wave-driven mixing 868 DO jk = 2, jpkm1 869 fsavs(:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) 870 avt (:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) 871 avm (:,:,jk) = avm(:,:,jk) + zav_wave(:,:,jk) 872 END DO 873 ENDIF 874 875 DO jk = 2, jpkm1 !* update momentum diffusivity at wu and wv points 876 DO jj = 2, jpjm1 877 DO ji = fs_2, fs_jpim1 ! vector opt. 878 avmu(ji,jj,jk) = avmu(ji,jj,jk) + 0.5_wp * ( zav_wave(ji,jj,jk) + zav_wave(ji+1,jj ,jk) ) * wumask(ji,jj,jk) 879 avmv(ji,jj,jk) = avmv(ji,jj,jk) + 0.5_wp * ( zav_wave(ji,jj,jk) + zav_wave(ji ,jj+1,jk) ) * wvmask(ji,jj,jk) 880 END DO 881 END DO 882 END DO 883 CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. ) ! lateral boundary condition 884 885 ! !* output internal wave-driven mixing coefficient 886 CALL iom_put( "av_wave", zav_wave ) 887 !* output useful diagnostics: N^2, Kz * N^2 (bflx_tmx), 888 ! vertical integral of rau0 * Kz * N^2 (pcmap_tmx), energy density (emix_tmx) 889 IF( iom_use("bflx_tmx") .OR. iom_use("pcmap_tmx") ) THEN 890 bflx_tmx(:,:,:) = MAX( 0._wp, rn2(:,:,:) ) * zav_wave(:,:,:) 891 pcmap_tmx(:,:) = 0._wp 892 DO jk = 2, jpkm1 893 pcmap_tmx(:,:) = pcmap_tmx(:,:) + e3w_n(:,:,jk) * bflx_tmx(:,:,jk) * wmask(:,:,jk) 894 END DO 895 pcmap_tmx(:,:) = rau0 * pcmap_tmx(:,:) 896 CALL iom_put( "bflx_tmx", bflx_tmx ) 897 CALL iom_put( "pcmap_tmx", pcmap_tmx ) 898 ENDIF 899 CALL iom_put( "bn2", rn2 ) 900 CALL iom_put( "emix_tmx", emix_tmx ) 901 902 CALL wrk_dealloc( jpi,jpj, zfact, zhdep ) 903 CALL wrk_dealloc( jpi,jpj,jpk, zwkb, zweight, znu_t, znu_w, zReb ) 904 905 IF(ln_ctl) CALL prt_ctl(tab3d_1=zav_wave , clinfo1=' tmx - av_wave: ', tab3d_2=avt, clinfo2=' avt: ', ovlap=1, kdim=jpk) 906 ! 907 IF( nn_timing == 1 ) CALL timing_stop('zdf_tmx') 908 ! 909 END SUBROUTINE zdf_tmx 910 911 912 SUBROUTINE zdf_tmx_init 913 !!---------------------------------------------------------------------- 914 !! *** ROUTINE zdf_tmx_init *** 915 !! 916 !! ** Purpose : Initialization of the wave-driven vertical mixing, reading 917 !! of input power maps and decay length scales in netcdf files. 918 !! 919 !! ** Method : - Read the namzdf_tmx namelist and check the parameters 920 !! 921 !! - Read the input data in NetCDF files : 922 !! power available from high-mode wave breaking (mixing_power_bot.nc) 923 !! power available from pycnocline-intensified wave-breaking (mixing_power_pyc.nc) 924 !! power available from critical slope wave-breaking (mixing_power_cri.nc) 925 !! WKB decay scale for high-mode wave-breaking (decay_scale_bot.nc) 926 !! decay scale for critical slope wave-breaking (decay_scale_cri.nc) 927 !! 928 !! ** input : - Namlist namzdf_tmx 929 !! - NetCDF files : mixing_power_bot.nc, mixing_power_pyc.nc, mixing_power_cri.nc, 930 !! decay_scale_bot.nc decay_scale_cri.nc 931 !! 932 !! ** Action : - Increase by 1 the nstop flag is setting problem encounter 933 !! - Define ebot_tmx, epyc_tmx, ecri_tmx, hbot_tmx, hcri_tmx 934 !! 935 !! References : de Lavergne et al. 2015, JPO; 2016, in prep. 936 !! 937 !!---------------------------------------------------------------------- 938 INTEGER :: ji, jj, jk ! dummy loop indices 939 INTEGER :: inum ! local integer 940 INTEGER :: ios 941 REAL(wp) :: zbot, zpyc, zcri ! local scalars 942 !! 943 NAMELIST/namzdf_tmx_new/ nn_zpyc, ln_mevar, ln_tsdiff 944 !!---------------------------------------------------------------------- 945 ! 946 IF( nn_timing == 1 ) CALL timing_start('zdf_tmx_init') 947 ! 948 REWIND( numnam_ref ) ! Namelist namzdf_tmx in reference namelist : Wave-driven mixing 949 READ ( numnam_ref, namzdf_tmx_new, IOSTAT = ios, ERR = 901) 950 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_tmx in reference namelist', lwp ) 951 ! 952 REWIND( numnam_cfg ) ! Namelist namzdf_tmx in configuration namelist : Wave-driven mixing 953 READ ( numnam_cfg, namzdf_tmx_new, IOSTAT = ios, ERR = 902 ) 954 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_tmx in configuration namelist', lwp ) 955 IF(lwm) WRITE ( numond, namzdf_tmx_new ) 956 ! 957 IF(lwp) THEN ! Control print 958 WRITE(numout,*) 959 WRITE(numout,*) 'zdf_tmx_init : internal wave-driven mixing' 960 WRITE(numout,*) '~~~~~~~~~~~~' 961 WRITE(numout,*) ' Namelist namzdf_tmx_new : set wave-driven mixing parameters' 962 WRITE(numout,*) ' Pycnocline-intensified diss. scales as N (=1) or N^2 (=2) = ', nn_zpyc 963 WRITE(numout,*) ' Variable (T) or constant (F) mixing efficiency = ', ln_mevar 964 WRITE(numout,*) ' Differential internal wave-driven mixing (T) or not (F) = ', ln_tsdiff 965 ENDIF 966 967 ! The new wave-driven mixing parameterization elevates avt and avm in the interior, and 968 ! ensures that avt remains larger than its molecular value (=1.4e-7). Therefore, avtb should 969 ! be set here to a very small value, and avmb to its (uniform) molecular value (=1.4e-6). 970 avmb(:) = 1.4e-6_wp ! viscous molecular value 971 avtb(:) = 1.e-10_wp ! very small diffusive minimum (background avt is specified in zdf_tmx) 972 avtb_2d(:,:) = 1.e0_wp ! uniform 973 IF(lwp) THEN ! Control print 974 WRITE(numout,*) 975 WRITE(numout,*) ' Force the background value applied to avm & avt in TKE to be everywhere ', & 976 & 'the viscous molecular value & a very small diffusive value, resp.' 977 ENDIF 978 979 IF( .NOT.lk_zdfddm ) CALL ctl_stop( 'STOP', 'zdf_tmx_init_new : key_zdftmx_new requires key_zdfddm' ) 980 981 ! ! allocate tmx arrays 982 IF( zdf_tmx_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_tmx_init : unable to allocate tmx arrays' ) 983 ! 984 ! ! read necessary fields 985 CALL iom_open('mixing_power_bot',inum) ! energy flux for high-mode wave breaking [W/m2] 986 CALL iom_get (inum, jpdom_data, 'field', ebot_tmx, 1 ) 987 CALL iom_close(inum) 988 ! 989 CALL iom_open('mixing_power_pyc',inum) ! energy flux for pynocline-intensified wave breaking [W/m2] 990 CALL iom_get (inum, jpdom_data, 'field', epyc_tmx, 1 ) 991 CALL iom_close(inum) 992 ! 993 CALL iom_open('mixing_power_cri',inum) ! energy flux for critical slope wave breaking [W/m2] 994 CALL iom_get (inum, jpdom_data, 'field', ecri_tmx, 1 ) 995 CALL iom_close(inum) 996 ! 997 CALL iom_open('decay_scale_bot',inum) ! spatially variable decay scale for high-mode wave breaking [m] 998 CALL iom_get (inum, jpdom_data, 'field', hbot_tmx, 1 ) 999 CALL iom_close(inum) 1000 ! 1001 CALL iom_open('decay_scale_cri',inum) ! spatially variable decay scale for critical slope wave breaking [m] 1002 CALL iom_get (inum, jpdom_data, 'field', hcri_tmx, 1 ) 1003 CALL iom_close(inum) 1004 1005 ebot_tmx(:,:) = ebot_tmx(:,:) * ssmask(:,:) 1006 epyc_tmx(:,:) = epyc_tmx(:,:) * ssmask(:,:) 1007 ecri_tmx(:,:) = ecri_tmx(:,:) * ssmask(:,:) 1008 1009 ! Set once for all to zero the first and last vertical levels of appropriate variables 1010 emix_tmx (:,:, 1 ) = 0._wp 1011 emix_tmx (:,:,jpk) = 0._wp 1012 zav_ratio(:,:, 1 ) = 0._wp 1013 zav_ratio(:,:,jpk) = 0._wp 1014 zav_wave (:,:, 1 ) = 0._wp 1015 zav_wave (:,:,jpk) = 0._wp 1016 1017 zbot = glob_sum( e1e2t(:,:) * ebot_tmx(:,:) ) 1018 zpyc = glob_sum( e1e2t(:,:) * epyc_tmx(:,:) ) 1019 zcri = glob_sum( e1e2t(:,:) * ecri_tmx(:,:) ) 1020 IF(lwp) THEN 1021 WRITE(numout,*) ' High-mode wave-breaking energy: ', zbot * 1.e-12_wp, 'TW' 1022 WRITE(numout,*) ' Pycnocline-intensifed wave-breaking energy: ', zpyc * 1.e-12_wp, 'TW' 1023 WRITE(numout,*) ' Critical slope wave-breaking energy: ', zcri * 1.e-12_wp, 'TW' 1024 ENDIF 1025 ! 1026 IF( nn_timing == 1 ) CALL timing_stop('zdf_tmx_init') 1027 ! 1028 END SUBROUTINE zdf_tmx_init 1029 543 1030 #else 544 1031 !!----------------------------------------------------------------------
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