1 | MODULE zdfswm |
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2 | !!====================================================================== |
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3 | !! *** MODULE zdfswm *** |
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4 | !! vertical physics : surface wave-induced mixing |
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5 | !!====================================================================== |
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6 | !! History : 3.6 ! 2014-10 (E. Clementi) Original code |
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7 | !! 4.0 ! 2017-04 (G. Madec) debug + simplifications |
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8 | !!---------------------------------------------------------------------- |
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9 | |
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10 | !!---------------------------------------------------------------------- |
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11 | !! zdf_swm : update Kz due to surface wave-induced mixing |
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12 | !! zdf_swm_init : initilisation |
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13 | !!---------------------------------------------------------------------- |
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14 | USE dom_oce ! ocean domain variable |
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15 | USE zdf_oce ! vertical physics: mixing coefficients |
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16 | USE sbc_oce ! Surface boundary condition: ocean fields |
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17 | USE sbcwave ! wave module |
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18 | ! |
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19 | USE in_out_manager ! I/O manager |
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20 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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21 | USE lib_mpp ! distribued memory computing library |
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22 | |
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23 | IMPLICIT NONE |
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24 | PRIVATE |
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25 | |
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26 | PUBLIC zdf_swm ! routine called in zdp_phy |
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27 | PUBLIC zdf_swm_init ! routine called in zdf_phy_init |
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28 | |
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29 | !! * Substitutions |
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30 | # include "do_loop_substitute.h90" |
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31 | !!---------------------------------------------------------------------- |
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32 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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33 | !! $Id$ |
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34 | !! Software governed by the CeCILL license (see ./LICENSE) |
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35 | !!---------------------------------------------------------------------- |
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36 | CONTAINS |
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37 | |
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38 | SUBROUTINE zdf_swm( kt, Kmm, p_avm, p_avt, p_avs ) |
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39 | !!--------------------------------------------------------------------- |
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40 | !! *** ROUTINE zdf_swm *** |
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41 | !! |
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42 | !! ** Purpose :Compute the swm term (qbv) to be added to |
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43 | !! vertical viscosity and diffusivity coeffs. |
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44 | !! |
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45 | !! ** Method : Compute the swm term Bv (zqb) and added it to |
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46 | !! vertical viscosity and diffusivity coefficients |
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47 | !! zqb = alpha * A * Us(0) * exp (3 * k * z) |
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48 | !! where alpha is set here to 1 |
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49 | !! |
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50 | !! ** action : avt, avs, avm updated by the surface wave-induced mixing |
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51 | !! (inner domain only) |
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52 | !! |
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53 | !! reference : Qiao et al. GRL, 2004 |
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54 | !!--------------------------------------------------------------------- |
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55 | INTEGER , INTENT(in ) :: kt ! ocean time step |
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56 | INTEGER , INTENT(in ) :: Kmm ! time level index |
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57 | REAL(wp), DIMENSION(:,:,:) , INTENT(inout) :: p_avm ! momentum Kz (w-points) |
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58 | REAL(wp), DIMENSION(:,:,:) , INTENT(inout) :: p_avt, p_avs ! tracer Kz (w-points) |
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59 | ! |
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60 | INTEGER :: ji, jj, jk ! dummy loop indices |
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61 | REAL(wp):: zcoef, zqb ! local scalar |
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62 | !!--------------------------------------------------------------------- |
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63 | ! |
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64 | zcoef = 1._wp * 0.353553_wp |
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65 | DO_3D( 0, 0, 0, 0, 2, jpkm1 ) |
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66 | zqb = zcoef * hsw(ji,jj) * tsd2d(ji,jj) * EXP( -3. * wnum(ji,jj) * gdepw(ji,jj,jk,Kmm) ) * wmask(ji,jj,jk) |
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67 | ! |
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68 | p_avt(ji,jj,jk) = p_avt(ji,jj,jk) + zqb |
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69 | p_avs(ji,jj,jk) = p_avs(ji,jj,jk) + zqb |
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70 | p_avm(ji,jj,jk) = p_avm(ji,jj,jk) + zqb |
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71 | END_3D |
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72 | ! |
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73 | END SUBROUTINE zdf_swm |
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74 | |
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75 | |
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76 | SUBROUTINE zdf_swm_init |
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77 | !!--------------------------------------------------------------------- |
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78 | !! *** ROUTINE zdf_swm_init *** |
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79 | !! |
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80 | !! ** Purpose : surface wave-induced mixing initialisation |
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81 | !! |
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82 | !! ** Method : check the availability of surface wave fields |
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83 | !!--------------------------------------------------------------------- |
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84 | ! |
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85 | IF(lwp) THEN ! Control print |
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86 | WRITE(numout,*) |
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87 | WRITE(numout,*) 'zdf_swm_init : surface wave-driven mixing' |
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88 | WRITE(numout,*) '~~~~~~~~~~~~' |
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89 | ENDIF |
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90 | IF( .NOT.ln_wave .OR. & |
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91 | & .NOT.ln_sdw ) CALL ctl_stop ( 'zdf_swm_init: ln_zdfswm=T but ln_wave and ln_sdw /= T') |
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92 | ! |
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93 | END SUBROUTINE zdf_swm_init |
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94 | |
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95 | !!====================================================================== |
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96 | END MODULE zdfswm |
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