| 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 "domain_substitute.h90" |
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| 31 | !!---------------------------------------------------------------------- |
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| 32 | !! NEMO/OPA 4.0 , NEMO Consortium (2017) |
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| 33 | !! $Id:$ |
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| 34 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 35 | !!---------------------------------------------------------------------- |
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| 36 | CONTAINS |
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| 37 | |
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| 38 | SUBROUTINE zdf_swm( ARG_2D, kt, 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 ) :: ARG_2D ! inner domain start-end i-indices |
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| 56 | INTEGER , INTENT(in ) :: kt ! ocean time step |
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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 jk = 2, jpkm1 |
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| 66 | DO jj = k_Jstr, k_Jend |
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| 67 | DO ji = k_Istr, k_Iend |
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| 68 | zqb = zcoef * hsw(ji,jj) * tsd2d(ji,jj) * EXP( -3. * wnum(ji,jj) * gdepw_n(ji,jj,jk) ) * wmask(ji,jj,jk) |
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| 69 | ! |
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| 70 | p_avt(ji,jj,jk) = p_avt(ji,jj,jk) + zqb |
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| 71 | p_avs(ji,jj,jk) = p_avs(ji,jj,jk) + zqb |
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| 72 | p_avm(ji,jj,jk) = p_avm(ji,jj,jk) + zqb |
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| 73 | END DO |
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| 74 | END DO |
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| 75 | END DO |
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| 76 | ! |
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| 77 | END SUBROUTINE zdf_swm |
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| 78 | |
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| 79 | |
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| 80 | SUBROUTINE zdf_swm_init |
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| 81 | !!--------------------------------------------------------------------- |
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| 82 | !! *** ROUTINE zdf_swm_init *** |
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| 83 | !! |
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| 84 | !! ** Purpose : surface wave-induced mixing initialisation |
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| 85 | !! |
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| 86 | !! ** Method : check the availability of surface wave fields |
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| 87 | !!--------------------------------------------------------------------- |
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| 88 | ! |
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| 89 | IF(lwp) THEN ! Control print |
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| 90 | WRITE(numout,*) |
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| 91 | WRITE(numout,*) 'zdf_swm_init : surface wave-driven mixing' |
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| 92 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 93 | ENDIF |
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| 94 | IF( .NOT.ln_wave .OR. & |
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| 95 | & .NOT.ln_sdw ) CALL ctl_stop ( 'zdf_swm_init: ln_zdfswm=T but ln_wave and ln_sdw /= T') |
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| 96 | ! |
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| 97 | END SUBROUTINE zdf_swm_init |
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| 98 | |
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| 99 | !!====================================================================== |
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| 100 | END MODULE zdfswm |
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