Changeset 9987 for branches/UKMO/dev_r5518_obs_oper_update_icethick/NEMOGCM/NEMO/OPA_SRC/ZDF/zdftmx.F90
- Timestamp:
- 2018-07-23T11:33:03+02:00 (6 years ago)
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branches/UKMO/dev_r5518_obs_oper_update_icethick/NEMOGCM/NEMO/OPA_SRC/ZDF/zdftmx.F90
r7960 r9987 561 561 END SUBROUTINE zdf_tmx_init 562 562 563 #elif defined key_zdftmx_new 564 !!---------------------------------------------------------------------- 565 !! 'key_zdftmx_new' Internal wave-driven vertical mixing 566 !!---------------------------------------------------------------------- 567 !! zdf_tmx : global momentum & tracer Kz with wave induced Kz 568 !! zdf_tmx_init : global momentum & tracer Kz with wave induced Kz 569 !!---------------------------------------------------------------------- 570 USE oce ! ocean dynamics and tracers variables 571 USE dom_oce ! ocean space and time domain variables 572 USE zdf_oce ! ocean vertical physics variables 573 USE zdfddm ! ocean vertical physics: double diffusive mixing 574 USE lbclnk ! ocean lateral boundary conditions (or mpp link) 575 USE eosbn2 ! ocean equation of state 576 USE phycst ! physical constants 577 USE prtctl ! Print control 578 USE in_out_manager ! I/O manager 579 USE iom ! I/O Manager 580 USE lib_mpp ! MPP library 581 USE wrk_nemo ! work arrays 582 USE timing ! Timing 583 USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) 584 585 IMPLICIT NONE 586 PRIVATE 587 588 PUBLIC zdf_tmx ! called in step module 589 PUBLIC zdf_tmx_init ! called in nemogcm module 590 PUBLIC zdf_tmx_alloc ! called in nemogcm module 591 592 LOGICAL, PUBLIC, PARAMETER :: lk_zdftmx = .TRUE. !: wave-driven mixing flag 593 594 ! !!* Namelist namzdf_tmx : internal wave-driven mixing * 595 INTEGER :: nn_zpyc ! pycnocline-intensified mixing energy proportional to N (=1) or N^2 (=2) 596 LOGICAL :: ln_mevar ! variable (=T) or constant (=F) mixing efficiency 597 LOGICAL :: ln_tsdiff ! account for differential T/S wave-driven mixing (=T) or not (=F) 598 599 REAL(wp) :: r1_6 = 1._wp / 6._wp 600 601 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ebot_tmx ! power available from high-mode wave breaking (W/m2) 602 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: epyc_tmx ! power available from low-mode, pycnocline-intensified wave breaking (W/m2) 603 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ecri_tmx ! power available from low-mode, critical slope wave breaking (W/m2) 604 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hbot_tmx ! WKB decay scale for high-mode energy dissipation (m) 605 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hcri_tmx ! decay scale for low-mode critical slope dissipation (m) 606 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: emix_tmx ! local energy density available for mixing (W/kg) 607 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: bflx_tmx ! buoyancy flux Kz * N^2 (W/kg) 608 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: pcmap_tmx ! vertically integrated buoyancy flux (W/m2) 609 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: zav_ratio ! S/T diffusivity ratio (only for ln_tsdiff=T) 610 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: zav_wave ! Internal wave-induced diffusivity 611 612 !! * Substitutions 613 # include "zdfddm_substitute.h90" 614 # include "domzgr_substitute.h90" 615 # include "vectopt_loop_substitute.h90" 616 !!---------------------------------------------------------------------- 617 !! NEMO/OPA 4.0 , NEMO Consortium (2016) 618 !! $Id$ 619 !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) 620 !!---------------------------------------------------------------------- 621 CONTAINS 622 623 INTEGER FUNCTION zdf_tmx_alloc() 624 !!---------------------------------------------------------------------- 625 !! *** FUNCTION zdf_tmx_alloc *** 626 !!---------------------------------------------------------------------- 627 ALLOCATE( ebot_tmx(jpi,jpj), epyc_tmx(jpi,jpj), ecri_tmx(jpi,jpj) , & 628 & hbot_tmx(jpi,jpj), hcri_tmx(jpi,jpj), emix_tmx(jpi,jpj,jpk), & 629 & bflx_tmx(jpi,jpj,jpk), pcmap_tmx(jpi,jpj), zav_ratio(jpi,jpj,jpk), & 630 & zav_wave(jpi,jpj,jpk), STAT=zdf_tmx_alloc ) 631 ! 632 IF( lk_mpp ) CALL mpp_sum ( zdf_tmx_alloc ) 633 IF( zdf_tmx_alloc /= 0 ) CALL ctl_warn('zdf_tmx_alloc: failed to allocate arrays') 634 END FUNCTION zdf_tmx_alloc 635 636 637 SUBROUTINE zdf_tmx( kt ) 638 !!---------------------------------------------------------------------- 639 !! *** ROUTINE zdf_tmx *** 640 !! 641 !! ** Purpose : add to the vertical mixing coefficients the effect of 642 !! breaking internal waves. 643 !! 644 !! ** Method : - internal wave-driven vertical mixing is given by: 645 !! Kz_wave = min( 100 cm2/s, f( Reb = emix_tmx /( Nu * N^2 ) ) 646 !! where emix_tmx is the 3D space distribution of the wave-breaking 647 !! energy and Nu the molecular kinematic viscosity. 648 !! The function f(Reb) is linear (constant mixing efficiency) 649 !! if the namelist parameter ln_mevar = F and nonlinear if ln_mevar = T. 650 !! 651 !! - Compute emix_tmx, the 3D power density that allows to compute 652 !! Reb and therefrom the wave-induced vertical diffusivity. 653 !! This is divided into three components: 654 !! 1. Bottom-intensified low-mode dissipation at critical slopes 655 !! emix_tmx(z) = ( ecri_tmx / rau0 ) * EXP( -(H-z)/hcri_tmx ) 656 !! / ( 1. - EXP( - H/hcri_tmx ) ) * hcri_tmx 657 !! where hcri_tmx is the characteristic length scale of the bottom 658 !! intensification, ecri_tmx a map of available power, and H the ocean depth. 659 !! 2. Pycnocline-intensified low-mode dissipation 660 !! emix_tmx(z) = ( epyc_tmx / rau0 ) * ( sqrt(rn2(z))^nn_zpyc ) 661 !! / SUM( sqrt(rn2(z))^nn_zpyc * e3w(z) ) 662 !! where epyc_tmx is a map of available power, and nn_zpyc 663 !! is the chosen stratification-dependence of the internal wave 664 !! energy dissipation. 665 !! 3. WKB-height dependent high mode dissipation 666 !! emix_tmx(z) = ( ebot_tmx / rau0 ) * rn2(z) * EXP(-z_wkb(z)/hbot_tmx) 667 !! / SUM( rn2(z) * EXP(-z_wkb(z)/hbot_tmx) * e3w(z) ) 668 !! where hbot_tmx is the characteristic length scale of the WKB bottom 669 !! intensification, ebot_tmx is a map of available power, and z_wkb is the 670 !! WKB-stretched height above bottom defined as 671 !! z_wkb(z) = H * SUM( sqrt(rn2(z'>=z)) * e3w(z'>=z) ) 672 !! / SUM( sqrt(rn2(z')) * e3w(z') ) 673 !! 674 !! - update the model vertical eddy viscosity and diffusivity: 675 !! avt = avt + av_wave 676 !! avm = avm + av_wave 677 !! avmu = avmu + mi(av_wave) 678 !! avmv = avmv + mj(av_wave) 679 !! 680 !! - if namelist parameter ln_tsdiff = T, account for differential mixing: 681 !! avs = avt + av_wave * diffusivity_ratio(Reb) 682 !! 683 !! ** Action : - Define emix_tmx used to compute internal wave-induced mixing 684 !! - avt, avs, avm, avmu, avmv increased by internal wave-driven mixing 685 !! 686 !! References : de Lavergne et al. 2015, JPO; 2016, in prep. 687 !!---------------------------------------------------------------------- 688 INTEGER, INTENT(in) :: kt ! ocean time-step 689 ! 690 INTEGER :: ji, jj, jk ! dummy loop indices 691 REAL(wp) :: ztpc ! scalar workspace 692 REAL(wp), DIMENSION(:,:) , POINTER :: zfact ! Used for vertical structure 693 REAL(wp), DIMENSION(:,:) , POINTER :: zhdep ! Ocean depth 694 REAL(wp), DIMENSION(:,:,:), POINTER :: zwkb ! WKB-stretched height above bottom 695 REAL(wp), DIMENSION(:,:,:), POINTER :: zweight ! Weight for high mode vertical distribution 696 REAL(wp), DIMENSION(:,:,:), POINTER :: znu_t ! Molecular kinematic viscosity (T grid) 697 REAL(wp), DIMENSION(:,:,:), POINTER :: znu_w ! Molecular kinematic viscosity (W grid) 698 REAL(wp), DIMENSION(:,:,:), POINTER :: zReb ! Turbulence intensity parameter 699 !!---------------------------------------------------------------------- 700 ! 701 IF( nn_timing == 1 ) CALL timing_start('zdf_tmx') 702 ! 703 CALL wrk_alloc( jpi,jpj, zfact, zhdep ) 704 CALL wrk_alloc( jpi,jpj,jpk, zwkb, zweight, znu_t, znu_w, zReb ) 705 706 ! ! ----------------------------- ! 707 ! ! Internal wave-driven mixing ! (compute zav_wave) 708 ! ! ----------------------------- ! 709 ! 710 ! !* Critical slope mixing: distribute energy over the time-varying ocean depth, 711 ! using an exponential decay from the seafloor. 712 DO jj = 1, jpj ! part independent of the level 713 DO ji = 1, jpi 714 zhdep(ji,jj) = fsdepw(ji,jj,mbkt(ji,jj)+1) ! depth of the ocean 715 zfact(ji,jj) = rau0 * ( 1._wp - EXP( -zhdep(ji,jj) / hcri_tmx(ji,jj) ) ) 716 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = ecri_tmx(ji,jj) / zfact(ji,jj) 717 END DO 718 END DO 719 720 DO jk = 2, jpkm1 ! complete with the level-dependent part 721 emix_tmx(:,:,jk) = zfact(:,:) * ( EXP( ( fsde3w(:,:,jk ) - zhdep(:,:) ) / hcri_tmx(:,:) ) & 722 & - EXP( ( fsde3w(:,:,jk-1) - zhdep(:,:) ) / hcri_tmx(:,:) ) ) * wmask(:,:,jk) & 723 & / ( fsde3w(:,:,jk) - fsde3w(:,:,jk-1) ) 724 END DO 725 726 ! !* Pycnocline-intensified mixing: distribute energy over the time-varying 727 ! !* ocean depth as proportional to sqrt(rn2)^nn_zpyc 728 729 SELECT CASE ( nn_zpyc ) 730 731 CASE ( 1 ) ! Dissipation scales as N (recommended) 732 733 zfact(:,:) = 0._wp 734 DO jk = 2, jpkm1 ! part independent of the level 735 zfact(:,:) = zfact(:,:) + fse3w(:,:,jk) * SQRT( MAX( 0._wp, rn2(:,:,jk) ) ) * wmask(:,:,jk) 736 END DO 737 738 DO jj = 1, jpj 739 DO ji = 1, jpi 740 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = epyc_tmx(ji,jj) / ( rau0 * zfact(ji,jj) ) 741 END DO 742 END DO 743 744 DO jk = 2, jpkm1 ! complete with the level-dependent part 745 emix_tmx(:,:,jk) = emix_tmx(:,:,jk) + zfact(:,:) * SQRT( MAX( 0._wp, rn2(:,:,jk) ) ) * wmask(:,:,jk) 746 END DO 747 748 CASE ( 2 ) ! Dissipation scales as N^2 749 750 zfact(:,:) = 0._wp 751 DO jk = 2, jpkm1 ! part independent of the level 752 zfact(:,:) = zfact(:,:) + fse3w(:,:,jk) * MAX( 0._wp, rn2(:,:,jk) ) * wmask(:,:,jk) 753 END DO 754 755 DO jj= 1, jpj 756 DO ji = 1, jpi 757 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = epyc_tmx(ji,jj) / ( rau0 * zfact(ji,jj) ) 758 END DO 759 END DO 760 761 DO jk = 2, jpkm1 ! complete with the level-dependent part 762 emix_tmx(:,:,jk) = emix_tmx(:,:,jk) + zfact(:,:) * MAX( 0._wp, rn2(:,:,jk) ) * wmask(:,:,jk) 763 END DO 764 765 END SELECT 766 767 ! !* WKB-height dependent mixing: distribute energy over the time-varying 768 ! !* ocean depth as proportional to rn2 * exp(-z_wkb/rn_hbot) 769 770 zwkb(:,:,:) = 0._wp 771 zfact(:,:) = 0._wp 772 DO jk = 2, jpkm1 773 zfact(:,:) = zfact(:,:) + fse3w(:,:,jk) * SQRT( MAX( 0._wp, rn2(:,:,jk) ) ) * wmask(:,:,jk) 774 zwkb(:,:,jk) = zfact(:,:) 775 END DO 776 777 DO jk = 2, jpkm1 778 DO jj = 1, jpj 779 DO ji = 1, jpi 780 IF( zfact(ji,jj) /= 0 ) zwkb(ji,jj,jk) = zhdep(ji,jj) * ( zfact(ji,jj) - zwkb(ji,jj,jk) ) & 781 & * tmask(ji,jj,jk) / zfact(ji,jj) 782 END DO 783 END DO 784 END DO 785 zwkb(:,:,1) = zhdep(:,:) * tmask(:,:,1) 786 787 zweight(:,:,:) = 0._wp 788 DO jk = 2, jpkm1 789 zweight(:,:,jk) = MAX( 0._wp, rn2(:,:,jk) ) * hbot_tmx(:,:) * wmask(:,:,jk) & 790 & * ( EXP( -zwkb(:,:,jk) / hbot_tmx(:,:) ) - EXP( -zwkb(:,:,jk-1) / hbot_tmx(:,:) ) ) 791 END DO 792 793 zfact(:,:) = 0._wp 794 DO jk = 2, jpkm1 ! part independent of the level 795 zfact(:,:) = zfact(:,:) + zweight(:,:,jk) 796 END DO 797 798 DO jj = 1, jpj 799 DO ji = 1, jpi 800 IF( zfact(ji,jj) /= 0 ) zfact(ji,jj) = ebot_tmx(ji,jj) / ( rau0 * zfact(ji,jj) ) 801 END DO 802 END DO 803 804 DO jk = 2, jpkm1 ! complete with the level-dependent part 805 emix_tmx(:,:,jk) = emix_tmx(:,:,jk) + zweight(:,:,jk) * zfact(:,:) * wmask(:,:,jk) & 806 & / ( fsde3w(:,:,jk) - fsde3w(:,:,jk-1) ) 807 END DO 808 809 810 ! Calculate molecular kinematic viscosity 811 znu_t(:,:,:) = 1.e-4_wp * ( 17.91_wp - 0.53810_wp * tsn(:,:,:,jp_tem) + 0.00694_wp * tsn(:,:,:,jp_tem) * tsn(:,:,:,jp_tem) & 812 & + 0.02305_wp * tsn(:,:,:,jp_sal) ) * tmask(:,:,:) * r1_rau0 813 DO jk = 2, jpkm1 814 znu_w(:,:,jk) = 0.5_wp * ( znu_t(:,:,jk-1) + znu_t(:,:,jk) ) * wmask(:,:,jk) 815 END DO 816 817 ! Calculate turbulence intensity parameter Reb 818 DO jk = 2, jpkm1 819 zReb(:,:,jk) = emix_tmx(:,:,jk) / MAX( 1.e-20_wp, znu_w(:,:,jk) * rn2(:,:,jk) ) 820 END DO 821 822 ! Define internal wave-induced diffusivity 823 DO jk = 2, jpkm1 824 zav_wave(:,:,jk) = znu_w(:,:,jk) * zReb(:,:,jk) * r1_6 ! This corresponds to a constant mixing efficiency of 1/6 825 END DO 826 827 IF( ln_mevar ) THEN ! Variable mixing efficiency case : modify zav_wave in the 828 DO jk = 2, jpkm1 ! energetic (Reb > 480) and buoyancy-controlled (Reb <10.224 ) regimes 829 DO jj = 1, jpj 830 DO ji = 1, jpi 831 IF( zReb(ji,jj,jk) > 480.00_wp ) THEN 832 zav_wave(ji,jj,jk) = 3.6515_wp * znu_w(ji,jj,jk) * SQRT( zReb(ji,jj,jk) ) 833 ELSEIF( zReb(ji,jj,jk) < 10.224_wp ) THEN 834 zav_wave(ji,jj,jk) = 0.052125_wp * znu_w(ji,jj,jk) * zReb(ji,jj,jk) * SQRT( zReb(ji,jj,jk) ) 835 ENDIF 836 END DO 837 END DO 838 END DO 839 ENDIF 840 841 DO jk = 2, jpkm1 ! Bound diffusivity by molecular value and 100 cm2/s 842 zav_wave(:,:,jk) = MIN( MAX( 1.4e-7_wp, zav_wave(:,:,jk) ), 1.e-2_wp ) * wmask(:,:,jk) 843 END DO 844 845 IF( kt == nit000 ) THEN !* Control print at first time-step: diagnose the energy consumed by zav_wave 846 ztpc = 0._wp 847 DO jk = 2, jpkm1 848 DO jj = 1, jpj 849 DO ji = 1, jpi 850 ztpc = ztpc + fse3w(ji,jj,jk) * e1e2t(ji,jj) & 851 & * MAX( 0._wp, rn2(ji,jj,jk) ) * zav_wave(ji,jj,jk) * wmask(ji,jj,jk) * tmask_i(ji,jj) 852 END DO 853 END DO 854 END DO 855 IF( lk_mpp ) CALL mpp_sum( ztpc ) 856 ztpc = rau0 * ztpc ! Global integral of rauo * Kz * N^2 = power contributing to mixing 857 858 IF(lwp) THEN 859 WRITE(numout,*) 860 WRITE(numout,*) 'zdf_tmx : Internal wave-driven mixing (tmx)' 861 WRITE(numout,*) '~~~~~~~ ' 862 WRITE(numout,*) 863 WRITE(numout,*) ' Total power consumption by av_wave: ztpc = ', ztpc * 1.e-12_wp, 'TW' 864 ENDIF 865 ENDIF 866 867 ! ! ----------------------- ! 868 ! ! Update mixing coefs ! 869 ! ! ----------------------- ! 870 ! 871 IF( ln_tsdiff ) THEN !* Option for differential mixing of salinity and temperature 872 DO jk = 2, jpkm1 ! Calculate S/T diffusivity ratio as a function of Reb 873 DO jj = 1, jpj 874 DO ji = 1, jpi 875 zav_ratio(ji,jj,jk) = ( 0.505_wp + 0.495_wp * & 876 & TANH( 0.92_wp * ( LOG10( MAX( 1.e-20_wp, zReb(ji,jj,jk) * 5._wp * r1_6 ) ) - 0.60_wp ) ) & 877 & ) * wmask(ji,jj,jk) 878 END DO 879 END DO 880 END DO 881 CALL iom_put( "av_ratio", zav_ratio ) 882 DO jk = 2, jpkm1 !* update momentum & tracer diffusivity with wave-driven mixing 883 fsavs(:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) * zav_ratio(:,:,jk) 884 avt (:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) 885 avm (:,:,jk) = avm(:,:,jk) + zav_wave(:,:,jk) 886 END DO 887 ! 888 ELSE !* update momentum & tracer diffusivity with wave-driven mixing 889 DO jk = 2, jpkm1 890 fsavs(:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) 891 avt (:,:,jk) = avt(:,:,jk) + zav_wave(:,:,jk) 892 avm (:,:,jk) = avm(:,:,jk) + zav_wave(:,:,jk) 893 END DO 894 ENDIF 895 896 DO jk = 2, jpkm1 !* update momentum diffusivity at wu and wv points 897 DO jj = 2, jpjm1 898 DO ji = fs_2, fs_jpim1 ! vector opt. 899 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) 900 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) 901 END DO 902 END DO 903 END DO 904 CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. ) ! lateral boundary condition 905 906 ! !* output internal wave-driven mixing coefficient 907 CALL iom_put( "av_wave", zav_wave ) 908 !* output useful diagnostics: N^2, Kz * N^2 (bflx_tmx), 909 ! vertical integral of rau0 * Kz * N^2 (pcmap_tmx), energy density (emix_tmx) 910 IF( iom_use("bflx_tmx") .OR. iom_use("pcmap_tmx") ) THEN 911 bflx_tmx(:,:,:) = MAX( 0._wp, rn2(:,:,:) ) * zav_wave(:,:,:) 912 pcmap_tmx(:,:) = 0._wp 913 DO jk = 2, jpkm1 914 pcmap_tmx(:,:) = pcmap_tmx(:,:) + fse3w(:,:,jk) * bflx_tmx(:,:,jk) * wmask(:,:,jk) 915 END DO 916 pcmap_tmx(:,:) = rau0 * pcmap_tmx(:,:) 917 CALL iom_put( "bflx_tmx", bflx_tmx ) 918 CALL iom_put( "pcmap_tmx", pcmap_tmx ) 919 ENDIF 920 CALL iom_put( "emix_tmx", emix_tmx ) 921 922 CALL wrk_dealloc( jpi,jpj, zfact, zhdep ) 923 CALL wrk_dealloc( jpi,jpj,jpk, zwkb, zweight, znu_t, znu_w, zReb ) 924 925 IF(ln_ctl) CALL prt_ctl(tab3d_1=zav_wave , clinfo1=' tmx - av_wave: ', tab3d_2=avt, clinfo2=' avt: ', ovlap=1, kdim=jpk) 926 ! 927 IF( nn_timing == 1 ) CALL timing_stop('zdf_tmx') 928 ! 929 END SUBROUTINE zdf_tmx 930 931 932 SUBROUTINE zdf_tmx_init 933 !!---------------------------------------------------------------------- 934 !! *** ROUTINE zdf_tmx_init *** 935 !! 936 !! ** Purpose : Initialization of the wave-driven vertical mixing, reading 937 !! of input power maps and decay length scales in netcdf files. 938 !! 939 !! ** Method : - Read the namzdf_tmx namelist and check the parameters 940 !! 941 !! - Read the input data in NetCDF files : 942 !! power available from high-mode wave breaking (mixing_power_bot.nc) 943 !! power available from pycnocline-intensified wave-breaking (mixing_power_pyc.nc) 944 !! power available from critical slope wave-breaking (mixing_power_cri.nc) 945 !! WKB decay scale for high-mode wave-breaking (decay_scale_bot.nc) 946 !! decay scale for critical slope wave-breaking (decay_scale_cri.nc) 947 !! 948 !! ** input : - Namlist namzdf_tmx 949 !! - NetCDF files : mixing_power_bot.nc, mixing_power_pyc.nc, mixing_power_cri.nc, 950 !! decay_scale_bot.nc decay_scale_cri.nc 951 !! 952 !! ** Action : - Increase by 1 the nstop flag is setting problem encounter 953 !! - Define ebot_tmx, epyc_tmx, ecri_tmx, hbot_tmx, hcri_tmx 954 !! 955 !! References : de Lavergne et al. 2015, JPO; 2016, in prep. 956 !! 957 !!---------------------------------------------------------------------- 958 INTEGER :: ji, jj, jk ! dummy loop indices 959 INTEGER :: inum ! local integer 960 INTEGER :: ios 961 REAL(wp) :: zbot, zpyc, zcri ! local scalars 962 !! 963 NAMELIST/namzdf_tmx_new/ nn_zpyc, ln_mevar, ln_tsdiff 964 !!---------------------------------------------------------------------- 965 ! 966 IF( nn_timing == 1 ) CALL timing_start('zdf_tmx_init') 967 ! 968 REWIND( numnam_ref ) ! Namelist namzdf_tmx in reference namelist : Wave-driven mixing 969 READ ( numnam_ref, namzdf_tmx_new, IOSTAT = ios, ERR = 901) 970 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_tmx in reference namelist', lwp ) 971 ! 972 REWIND( numnam_cfg ) ! Namelist namzdf_tmx in configuration namelist : Wave-driven mixing 973 READ ( numnam_cfg, namzdf_tmx_new, IOSTAT = ios, ERR = 902 ) 974 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_tmx in configuration namelist', lwp ) 975 IF(lwm) WRITE ( numond, namzdf_tmx_new ) 976 ! 977 IF(lwp) THEN ! Control print 978 WRITE(numout,*) 979 WRITE(numout,*) 'zdf_tmx_init : internal wave-driven mixing' 980 WRITE(numout,*) '~~~~~~~~~~~~' 981 WRITE(numout,*) ' Namelist namzdf_tmx_new : set wave-driven mixing parameters' 982 WRITE(numout,*) ' Pycnocline-intensified diss. scales as N (=1) or N^2 (=2) = ', nn_zpyc 983 WRITE(numout,*) ' Variable (T) or constant (F) mixing efficiency = ', ln_mevar 984 WRITE(numout,*) ' Differential internal wave-driven mixing (T) or not (F) = ', ln_tsdiff 985 ENDIF 986 987 ! The new wave-driven mixing parameterization elevates avt and avm in the interior, and 988 ! ensures that avt remains larger than its molecular value (=1.4e-7). Therefore, avtb should 989 ! be set here to a very small value, and avmb to its (uniform) molecular value (=1.4e-6). 990 avmb(:) = 1.4e-6_wp ! viscous molecular value 991 avtb(:) = 1.e-10_wp ! very small diffusive minimum (background avt is specified in zdf_tmx) 992 avtb_2d(:,:) = 1.e0_wp ! uniform 993 IF(lwp) THEN ! Control print 994 WRITE(numout,*) 995 WRITE(numout,*) ' Force the background value applied to avm & avt in TKE to be everywhere ', & 996 & 'the viscous molecular value & a very small diffusive value, resp.' 997 ENDIF 998 999 IF( .NOT.lk_zdfddm ) CALL ctl_stop( 'STOP', 'zdf_tmx_init_new : key_zdftmx_new requires key_zdfddm' ) 1000 1001 ! ! allocate tmx arrays 1002 IF( zdf_tmx_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_tmx_init : unable to allocate tmx arrays' ) 1003 ! 1004 ! ! read necessary fields 1005 CALL iom_open('mixing_power_bot',inum) ! energy flux for high-mode wave breaking [W/m2] 1006 CALL iom_get (inum, jpdom_data, 'field', ebot_tmx, 1 ) 1007 CALL iom_close(inum) 1008 ! 1009 CALL iom_open('mixing_power_pyc',inum) ! energy flux for pynocline-intensified wave breaking [W/m2] 1010 CALL iom_get (inum, jpdom_data, 'field', epyc_tmx, 1 ) 1011 CALL iom_close(inum) 1012 ! 1013 CALL iom_open('mixing_power_cri',inum) ! energy flux for critical slope wave breaking [W/m2] 1014 CALL iom_get (inum, jpdom_data, 'field', ecri_tmx, 1 ) 1015 CALL iom_close(inum) 1016 ! 1017 CALL iom_open('decay_scale_bot',inum) ! spatially variable decay scale for high-mode wave breaking [m] 1018 CALL iom_get (inum, jpdom_data, 'field', hbot_tmx, 1 ) 1019 CALL iom_close(inum) 1020 ! 1021 CALL iom_open('decay_scale_cri',inum) ! spatially variable decay scale for critical slope wave breaking [m] 1022 CALL iom_get (inum, jpdom_data, 'field', hcri_tmx, 1 ) 1023 CALL iom_close(inum) 1024 1025 ebot_tmx(:,:) = ebot_tmx(:,:) * ssmask(:,:) 1026 epyc_tmx(:,:) = epyc_tmx(:,:) * ssmask(:,:) 1027 ecri_tmx(:,:) = ecri_tmx(:,:) * ssmask(:,:) 1028 1029 ! Set once for all to zero the first and last vertical levels of appropriate variables 1030 emix_tmx (:,:, 1 ) = 0._wp 1031 emix_tmx (:,:,jpk) = 0._wp 1032 zav_ratio(:,:, 1 ) = 0._wp 1033 zav_ratio(:,:,jpk) = 0._wp 1034 zav_wave (:,:, 1 ) = 0._wp 1035 zav_wave (:,:,jpk) = 0._wp 1036 1037 zbot = glob_sum( e1e2t(:,:) * ebot_tmx(:,:) ) 1038 zpyc = glob_sum( e1e2t(:,:) * epyc_tmx(:,:) ) 1039 zcri = glob_sum( e1e2t(:,:) * ecri_tmx(:,:) ) 1040 IF(lwp) THEN 1041 WRITE(numout,*) ' High-mode wave-breaking energy: ', zbot * 1.e-12_wp, 'TW' 1042 WRITE(numout,*) ' Pycnocline-intensifed wave-breaking energy: ', zpyc * 1.e-12_wp, 'TW' 1043 WRITE(numout,*) ' Critical slope wave-breaking energy: ', zcri * 1.e-12_wp, 'TW' 1044 ENDIF 1045 ! 1046 IF( nn_timing == 1 ) CALL timing_stop('zdf_tmx_init') 1047 ! 1048 END SUBROUTINE zdf_tmx_init 1049 563 1050 #else 564 1051 !!----------------------------------------------------------------------
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