[13503] | 1 | MODULE usrdef_sbc |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE usrdef_sbc *** |
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| 4 | !! |
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[13752] | 5 | !! === SWG configuration === |
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[13503] | 6 | !! |
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| 7 | !! User defined : surface forcing of a user configuration |
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| 8 | !!====================================================================== |
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[13599] | 9 | !! History : 4.0 ! 2016-03 (S. Flavoni, G. Madec) user defined interface |
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| 10 | !! - ! 2020-03 (A. Nasser) Shallow Water Eq. configuration |
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[13503] | 11 | !!---------------------------------------------------------------------- |
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| 12 | |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! usrdef_sbc : user defined surface bounday conditions in GYRE case |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | USE oce ! ocean dynamics and tracers |
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| 17 | USE dom_oce ! ocean space and time domain |
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| 18 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 19 | USE phycst ! physical constants |
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| 20 | USE usrdef_nam |
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| 21 | ! |
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| 22 | USE in_out_manager ! I/O manager |
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| 23 | USE lib_mpp ! distribued memory computing library |
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| 24 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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[13599] | 25 | USE lib_fortran ! Fortran library |
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[13503] | 26 | |
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| 27 | IMPLICIT NONE |
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| 28 | PRIVATE |
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| 29 | |
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| 30 | PUBLIC usrdef_sbc_oce ! routine called in sbcmod module |
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| 31 | PUBLIC usrdef_sbc_ice_tau ! routine called by icestp.F90 for ice dynamics |
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| 32 | PUBLIC usrdef_sbc_ice_flx ! routine called by icestp.F90 for ice thermo |
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| 33 | |
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| 34 | !!---------------------------------------------------------------------- |
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| 35 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 36 | !! $Id: usrdef_sbc.F90 10425 2018-12-19 21:54:16Z smasson $ |
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| 37 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 38 | !!---------------------------------------------------------------------- |
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| 39 | CONTAINS |
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| 40 | |
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| 41 | SUBROUTINE usrdef_sbc_oce( kt, Kbb ) |
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| 42 | !!--------------------------------------------------------------------- |
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[13599] | 43 | !! *** ROUTINE usrdef_sbc_oce *** |
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[13503] | 44 | !! |
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| 45 | !! ** Purpose : provide at each time-step the GYRE surface boundary |
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| 46 | !! condition, i.e. the momentum, heat and freshwater fluxes. |
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| 47 | !! |
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| 48 | !! ** Method : analytical seasonal cycle for GYRE configuration. |
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| 49 | !! CAUTION : never mask the surface stress field ! |
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| 50 | !! |
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| 51 | !! ** Action : - set the ocean surface boundary condition, i.e. |
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| 52 | !! utau, vtau, taum, wndm, qns, qsr, emp, sfx |
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| 53 | !! |
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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) :: Kbb ! ocean time index |
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| 57 | !! |
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| 58 | INTEGER :: ji, jj ! dummy loop indices |
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| 59 | REAL(wp) :: ztauu, ztauv ! wind intensity projeted |
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| 60 | REAL(wp) :: zrhoa = 1.22 ! Air density kg/m3 |
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| 61 | REAL(wp) :: zcdrag = 1.5e-3 ! drag coefficient |
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| 62 | REAL(wp) :: ztx, zty, zmod, zcoef ! temporary variables |
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| 63 | !!--------------------------------------------------------------------- |
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| 64 | |
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| 65 | ! ---------------------------- ! |
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| 66 | ! heat and freshwater fluxes ! (no fluxes) |
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| 67 | ! ---------------------------- ! |
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| 68 | |
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| 69 | emp (:,:) = 0._wp |
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| 70 | sfx (:,:) = 0._wp |
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| 71 | qns (:,:) = 0._wp |
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| 72 | |
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| 73 | ! ---------------------------- ! |
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| 74 | ! momentum fluxes ! |
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| 75 | ! ---------------------------- ! |
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| 76 | ! rotated case (45deg) |
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| 77 | ! ztauu = 0.2_wp / SQRT( 2._wp ) ! N.m-2 |
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| 78 | ! ztauv = 0.2_wp / SQRT( 2._wp) ! N.m-2 |
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| 79 | ! non rotated |
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| 80 | !ztauu = 0.2_wp ! N.m-2 |
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| 81 | !ztauv = 0._wp ! N.m-2 |
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| 82 | ! general case |
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| 83 | ztauu = REAL( rn_tau, wp ) * COS( rn_theta * rad ) ! N.m-2 |
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| 84 | ztauv = - REAL( rn_tau, wp ) * SIN( rn_theta * rad ) ! N.m-2 |
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| 85 | |
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| 86 | DO jj = 1, jpj |
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| 87 | DO ji = 1, jpi |
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| 88 | ! length of the domain : 2000km x 2000km |
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| 89 | utau(ji,jj) = - ztauu * COS( rpi * gphiu(ji,jj) / 2000000._wp) |
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| 90 | vtau(ji,jj) = - ztauv * COS( rpi * gphiv(ji,jj) / 2000000._wp) |
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| 91 | END DO |
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| 92 | END DO |
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| 93 | |
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| 94 | ! module of wind stress and wind speed at T-point |
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| 95 | zcoef = 1. / ( zrhoa * zcdrag ) |
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| 96 | DO jj = 2, jpjm1 |
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| 97 | DO ji = 2, jpim1 |
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| 98 | ztx = utau(ji-1,jj ) + utau(ji,jj) |
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| 99 | zty = vtau(ji ,jj-1) + vtau(ji,jj) |
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| 100 | zmod = 0.5 * SQRT( ztx * ztx + zty * zty ) |
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| 101 | taum(ji,jj) = zmod |
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| 102 | wndm(ji,jj) = SQRT( zmod * zcoef ) |
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| 103 | END DO |
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| 104 | END DO |
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| 105 | |
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[14644] | 106 | CALL lbc_lnk( 'usrdef_sbc', taum(:,:), 'T', 1. , wndm(:,:), 'T', 1. ) |
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[13503] | 107 | ! |
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| 108 | END SUBROUTINE usrdef_sbc_oce |
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| 109 | |
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| 110 | |
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| 111 | SUBROUTINE usrdef_sbc_ice_tau( kt ) |
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| 112 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 113 | END SUBROUTINE usrdef_sbc_ice_tau |
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| 114 | |
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| 115 | |
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| 116 | SUBROUTINE usrdef_sbc_ice_flx( kt, phs, phi ) |
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| 117 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 118 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phs ! snow thickness |
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| 119 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phi ! ice thickness |
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| 120 | END SUBROUTINE usrdef_sbc_ice_flx |
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| 121 | |
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| 122 | !!====================================================================== |
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| 123 | END MODULE usrdef_sbc |
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