- Timestamp:
- 2017-12-01T18:44:09+01:00 (6 years ago)
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branches/2017/dev_CNRS_2017/NEMOGCM/NEMO/OPA_SRC/ZDF/zdfevd.F90
r7753 r8882 8 8 !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module 9 9 !! 3.2 ! 2009-03 (M. Leclair, G. Madec, R. Benshila) test on both before & after 10 !! 4.0 ! 2017-04 (G. Madec) evd applied on avm (at t-point) 10 11 !!---------------------------------------------------------------------- 11 12 … … 23 24 USE iom ! for iom_put 24 25 USE lbclnk ! ocean lateral boundary conditions (or mpp link) 25 USE wrk_nemo ! work arrays26 26 USE timing ! Timing 27 27 … … 38 38 CONTAINS 39 39 40 SUBROUTINE zdf_evd( kt )40 SUBROUTINE zdf_evd( kt, p_avm, p_avt ) 41 41 !!---------------------------------------------------------------------- 42 42 !! *** ROUTINE zdf_evd *** … … 45 45 !! sivity coefficients when a static instability is encountered. 46 46 !! 47 !! ** Method : avt, avm, and the 4 neighbouring avmu, avmv coefficients 48 !! are set to avevd (namelist parameter) if the water column is 49 !! statically unstable (i.e. if rn2 < -1.e-12 ) 47 !! ** Method : tracer (and momentum if nn_evdm=1) vertical mixing 48 !! coefficients are set to rn_evd (namelist parameter) 49 !! if the water column is statically unstable. 50 !! The test of static instability is performed using 51 !! Brunt-Vaisala frequency (rn2 < -1.e-12) of to successive 52 !! time-step (Leap-Frog environnement): before and 53 !! now time-step. 50 54 !! 51 !! ** Action : avt, avm, avmu, avmv updted in static instability cases 52 !! 53 !! References : Lazar, A., these de l'universite Paris VI, France, 1997 55 !! ** Action : avt, avm enhanced where static instability occurs 54 56 !!---------------------------------------------------------------------- 55 INTEGER, INTENT( in ) :: kt ! ocean time-step indexocean time step 57 INTEGER , INTENT(in ) :: kt ! ocean time-step indexocean time step 58 REAL(wp), DIMENSION(:,:,:) , INTENT(inout) :: p_avm, p_avt ! momentum and tracer Kz (w-points) 56 59 ! 57 60 INTEGER :: ji, jj, jk ! dummy loop indices 58 REAL(wp), POINTER, DIMENSION(:,:,:) :: zavt_evd, zavm_evd61 REAL(wp), DIMENSION(jpi,jpj,jpk) :: zavt_evd, zavm_evd 59 62 !!---------------------------------------------------------------------- 60 63 ! 61 IF( nn_timing == 1 )CALL timing_start('zdf_evd')64 IF( ln_timing ) CALL timing_start('zdf_evd') 62 65 ! 63 66 IF( kt == nit000 ) THEN … … 68 71 ENDIF 69 72 ! 70 CALL wrk_alloc( jpi,jpj,jpk, zavt_evd, zavm_evd )71 73 ! 72 zavt_evd(:,:,:) = avt(:,:,:)! set avt prior to evd application74 zavt_evd(:,:,:) = p_avt(:,:,:) ! set avt prior to evd application 73 75 ! 74 76 SELECT CASE ( nn_evdm ) 75 77 ! 76 CASE ( 1 ) ! enhance vertical eddy viscosity and diffusivity(if rn2<-1.e-12)78 CASE ( 1 ) !== enhance tracer & momentum Kz ==! (if rn2<-1.e-12) 77 79 ! 78 zavm_evd(:,:,:) = avm(:,:,:) ! set avm prior to evd application 80 zavm_evd(:,:,:) = p_avm(:,:,:) ! set avm prior to evd application 81 ! 82 !! change last digits results 83 ! WHERE( MAX( rn2(2:jpi,2:jpj,2:jpkm1), rn2b(2:jpi,2:jpj,2:jpkm1) ) <= -1.e-12 ) THEN 84 ! p_avt(2:jpi,2:jpj,2:jpkm1) = rn_evd * wmask(2:jpi,2:jpj,2:jpkm1) 85 ! p_avm(2:jpi,2:jpj,2:jpkm1) = rn_evd * wmask(2:jpi,2:jpj,2:jpkm1) 86 ! END WHERE 79 87 ! 80 88 DO jk = 1, jpkm1 81 DO jj = 2, jpj ! no vector opt.82 DO ji = 2, jpi 89 DO jj = 2, jpjm1 90 DO ji = 2, jpim1 83 91 IF( MIN( rn2(ji,jj,jk), rn2b(ji,jj,jk) ) <= -1.e-12 ) THEN 84 avt (ji ,jj ,jk) = rn_avevd * tmask(ji ,jj ,jk) 85 avm (ji ,jj ,jk) = rn_avevd * tmask(ji ,jj ,jk) 86 avmu(ji ,jj ,jk) = rn_avevd * umask(ji ,jj ,jk) 87 avmu(ji-1,jj ,jk) = rn_avevd * umask(ji-1,jj ,jk) 88 avmv(ji ,jj ,jk) = rn_avevd * vmask(ji ,jj ,jk) 89 avmv(ji ,jj-1,jk) = rn_avevd * vmask(ji ,jj-1,jk) 92 p_avt(ji,jj,jk) = rn_evd * wmask(ji,jj,jk) 93 p_avm(ji,jj,jk) = rn_evd * wmask(ji,jj,jk) 90 94 ENDIF 91 95 END DO 92 96 END DO 93 97 END DO 94 CALL lbc_lnk( avt , 'W', 1. ) ; CALL lbc_lnk( avm , 'W', 1. ) ! Lateral boundary conditions95 CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. )96 98 ! 97 zavm_evd(:,:,:) = avm(:,:,:) - zavm_evd(:,:,:) ! change in avm due to evd98 CALL iom_put( "avm_evd", zavm_evd ) ! output this change99 zavm_evd(:,:,:) = p_avm(:,:,:) - zavm_evd(:,:,:) ! change in avm due to evd 100 CALL iom_put( "avm_evd", zavm_evd ) ! output this change 99 101 ! 100 CASE DEFAULT ! enhance vertical eddy diffusivity only (if rn2<-1.e-12) 102 CASE DEFAULT !== enhance tracer Kz ==! (if rn2<-1.e-12) 103 !! change last digits results 104 ! WHERE( MAX( rn2(2:jpi,2:jpj,2:jpkm1), rn2b(2:jpi,2:jpj,2:jpkm1) ) <= -1.e-12 ) 105 ! p_avt(2:jpi,2:jpj,2:jpkm1) = rn_evd * wmask(2:jpi,2:jpj,2:jpkm1) 106 ! END WHERE 107 101 108 DO jk = 1, jpkm1 102 !!! WHERE( rn2(:,:,jk) <= -1.e-12 ) avt(:,:,jk) = tmask(:,:,jk) * avevd ! agissant sur T SEUL! 103 DO jj = 1, jpj ! loop over the whole domain (no lbc_lnk call) 104 DO ji = 1, jpi 109 DO jj = 2, jpjm1 110 DO ji = 2, jpim1 105 111 IF( MIN( rn2(ji,jj,jk), rn2b(ji,jj,jk) ) <= -1.e-12 ) & 106 avt(ji,jj,jk) = rn_avevd * tmask(ji,jj,jk)112 p_avt(ji,jj,jk) = rn_evd * wmask(ji,jj,jk) 107 113 END DO 108 114 END DO … … 110 116 ! 111 117 END SELECT 112 113 zavt_evd(:,:,:) = avt(:,:,:) - zavt_evd(:,:,:) ! change in avt due to evd118 ! 119 zavt_evd(:,:,:) = p_avt(:,:,:) - zavt_evd(:,:,:) ! change in avt due to evd 114 120 CALL iom_put( "avt_evd", zavt_evd ) ! output this change 115 121 IF( l_trdtra ) CALL trd_tra( kt, 'TRA', jp_tem, jptra_evd, zavt_evd ) 116 122 ! 117 CALL wrk_dealloc( jpi,jpj,jpk, zavt_evd, zavm_evd ) 118 ! 119 IF( nn_timing == 1 ) CALL timing_stop('zdf_evd') 123 IF( ln_timing ) CALL timing_stop('zdf_evd') 120 124 ! 121 125 END SUBROUTINE zdf_evd
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