[2030] | 1 | MODULE trcldf |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE trcldf *** |
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[3294] | 4 | !! Ocean Passive tracers : lateral diffusive trends |
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[2030] | 5 | !!===================================================================== |
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| 6 | !! History : 9.0 ! 2005-11 (G. Madec) Original code |
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[3294] | 7 | !! NEMO 3.0 ! 2008-01 (C. Ethe, G. Madec) merge TRC-TRA |
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[2030] | 8 | !!---------------------------------------------------------------------- |
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| 9 | #if defined key_top |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! 'key_top' TOP models |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! trc_ldf : update the tracer trend with the lateral diffusion |
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| 15 | !! ldf_ctl : initialization, namelist read, and parameters control |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE oce_trc ! ocean dynamics and active tracers |
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| 18 | USE trc ! ocean passive tracers variables |
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| 19 | USE trcnam_trp ! passive tracers transport namelist variables |
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| 20 | USE ldftra_oce ! lateral diffusion coefficient on tracers |
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| 21 | USE ldfslp ! ??? |
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| 22 | USE traldf_bilapg ! lateral mixing (tra_ldf_bilapg routine) |
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| 23 | USE traldf_bilap ! lateral mixing (tra_ldf_bilap routine) |
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| 24 | USE traldf_iso ! lateral mixing (tra_ldf_iso routine) |
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[3294] | 25 | USE traldf_iso_grif ! lateral mixing (tra_ldf_iso_grif routine) |
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[2030] | 26 | USE traldf_lap ! lateral mixing (tra_ldf_lap routine) |
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[4990] | 27 | USE trd_oce |
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[2030] | 28 | USE trdtra |
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| 29 | USE prtctl_trc ! Print control |
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| 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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[3294] | 34 | PUBLIC trc_ldf ! called by step.F90 |
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[2030] | 35 | ! !!: ** lateral mixing namelist (nam_trcldf) ** |
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[3294] | 36 | REAL(wp) :: rldf_rat ! ratio between active and passive tracers diffusive coefficient |
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| 37 | INTEGER :: nldf = 0 ! type of lateral diffusion used defined from ln_trcldf_... namlist logicals) |
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[2030] | 38 | !! * Substitutions |
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| 39 | # include "domzgr_substitute.h90" |
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| 40 | # include "vectopt_loop_substitute.h90" |
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| 41 | !!---------------------------------------------------------------------- |
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[2287] | 42 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[3294] | 43 | !! $Id$ |
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[2287] | 44 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[2030] | 45 | !!---------------------------------------------------------------------- |
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| 46 | |
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| 47 | CONTAINS |
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| 48 | |
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| 49 | SUBROUTINE trc_ldf( kt ) |
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| 50 | !!---------------------------------------------------------------------- |
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| 51 | !! *** ROUTINE tra_ldf *** |
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[3294] | 52 | !! |
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[2030] | 53 | !! ** Purpose : compute the lateral ocean tracer physics. |
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| 54 | !! |
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| 55 | !!---------------------------------------------------------------------- |
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| 56 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 57 | !! |
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[6839] | 58 | INTEGER :: ji, jj, jk, jn |
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| 59 | REAL(wp) :: zdep |
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[2030] | 60 | CHARACTER (len=22) :: charout |
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[3294] | 61 | REAL(wp), POINTER, DIMENSION(:,:,:,:) :: ztrtrd |
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[2030] | 62 | !!---------------------------------------------------------------------- |
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[3294] | 63 | ! |
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| 64 | IF( nn_timing == 1 ) CALL timing_start('trc_ldf') |
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| 65 | ! |
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| 66 | IF( kt == nittrc000 ) CALL ldf_ctl ! initialisation & control of options |
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[2030] | 67 | |
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[3294] | 68 | rldf = rldf_rat |
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[6839] | 69 | ! |
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| 70 | r_fact_lap(:,:,:) = 1. |
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| 71 | DO jk= 1, jpk |
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| 72 | DO jj = 1, jpj |
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| 73 | DO ji = 1, jpi |
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| 74 | IF( fsdept(ji,jj,jk) > 200. .AND. gphit(ji,jj) < 5. .AND. gphit(ji,jj) > -5. ) THEN |
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| 75 | zdep = MAX( fsdept(ji,jj,jk) - 1000., 0. ) / 1000. |
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| 76 | r_fact_lap(ji,jj,jk) = MAX( 1., rn_fact_lap * EXP( -zdep ) ) |
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| 77 | ENDIF |
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| 78 | END DO |
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| 79 | END DO |
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| 80 | END DO |
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| 81 | ! |
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[3294] | 82 | IF( l_trdtrc ) THEN |
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| 83 | CALL wrk_alloc( jpi, jpj, jpk, jptra, ztrtrd ) |
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[2030] | 84 | ztrtrd(:,:,:,:) = tra(:,:,:,:) |
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| 85 | ENDIF |
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| 86 | |
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| 87 | SELECT CASE ( nldf ) ! compute lateral mixing trend and add it to the general trend |
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[4990] | 88 | CASE ( 0 ) ; CALL tra_ldf_lap ( kt, nittrc000, 'TRC', gtru, gtrv, gtrui, gtrvi, trb, tra, jptra ) ! iso-level laplacian |
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[3294] | 89 | CASE ( 1 ) ! rotated laplacian |
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| 90 | IF( ln_traldf_grif ) THEN |
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| 91 | CALL tra_ldf_iso_grif( kt, nittrc000, 'TRC', gtru, gtrv, trb, tra, jptra, rn_ahtb_0 ) |
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| 92 | ELSE |
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[4990] | 93 | CALL tra_ldf_iso ( kt, nittrc000, 'TRC', gtru, gtrv, gtrui, gtrvi, trb, tra, jptra, rn_ahtb_0 ) |
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[3294] | 94 | ENDIF |
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[4990] | 95 | CASE ( 2 ) ; CALL tra_ldf_bilap ( kt, nittrc000, 'TRC', gtru, gtrv, gtrui, gtrvi, trb, tra, jptra ) ! iso-level bilaplacian |
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[3294] | 96 | CASE ( 3 ) ; CALL tra_ldf_bilapg( kt, nittrc000, 'TRC', trb, tra, jptra ) ! s-coord. horizontal bilaplacian |
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[2030] | 97 | ! |
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| 98 | CASE ( -1 ) ! esopa: test all possibility with control print |
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[4990] | 99 | CALL tra_ldf_lap ( kt, nittrc000, 'TRC', gtru, gtrv, gtrui, gtrvi, trb, tra, jptra ) |
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[2034] | 100 | WRITE(charout, FMT="('ldf0 ')") ; CALL prt_ctl_trc_info(charout) |
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| 101 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
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[3294] | 102 | IF( ln_traldf_grif ) THEN |
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| 103 | CALL tra_ldf_iso_grif( kt, nittrc000, 'TRC', gtru, gtrv, trb, tra, jptra, rn_ahtb_0 ) |
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| 104 | ELSE |
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[4990] | 105 | CALL tra_ldf_iso ( kt, nittrc000, 'TRC', gtru, gtrv, gtrui, gtrvi, trb, tra, jptra, rn_ahtb_0 ) |
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[3294] | 106 | ENDIF |
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[2034] | 107 | WRITE(charout, FMT="('ldf1 ')") ; CALL prt_ctl_trc_info(charout) |
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| 108 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
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[4990] | 109 | CALL tra_ldf_bilap ( kt, nittrc000, 'TRC', gtru, gtrv, gtrui, gtrvi, trb, tra, jptra ) |
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[2034] | 110 | WRITE(charout, FMT="('ldf2 ')") ; CALL prt_ctl_trc_info(charout) |
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| 111 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
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[3294] | 112 | CALL tra_ldf_bilapg( kt, nittrc000, 'TRC', trb, tra, jptra ) |
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[2034] | 113 | WRITE(charout, FMT="('ldf3 ')") ; CALL prt_ctl_trc_info(charout) |
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| 114 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
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[2030] | 115 | END SELECT |
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| 116 | ! |
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| 117 | IF( l_trdtrc ) THEN ! save the horizontal diffusive trends for further diagnostics |
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| 118 | DO jn = 1, jptra |
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| 119 | ztrtrd(:,:,:,jn) = tra(:,:,:,jn) - ztrtrd(:,:,:,jn) |
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[4990] | 120 | CALL trd_tra( kt, 'TRC', jn, jptra_ldf, ztrtrd(:,:,:,jn) ) |
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[2030] | 121 | END DO |
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[3294] | 122 | CALL wrk_dealloc( jpi, jpj, jpk, jptra, ztrtrd ) |
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[2030] | 123 | ENDIF |
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| 124 | ! ! print mean trends (used for debugging) |
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| 125 | IF( ln_ctl ) THEN |
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| 126 | WRITE(charout, FMT="('ldf ')") ; CALL prt_ctl_trc_info(charout) |
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| 127 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
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| 128 | ENDIF |
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| 129 | ! |
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[3294] | 130 | IF( nn_timing == 1 ) CALL timing_stop('trc_ldf') |
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| 131 | ! |
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[2030] | 132 | END SUBROUTINE trc_ldf |
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| 133 | |
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| 134 | |
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| 135 | SUBROUTINE ldf_ctl |
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| 136 | !!---------------------------------------------------------------------- |
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| 137 | !! *** ROUTINE ldf_ctl *** |
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[3294] | 138 | !! |
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[2030] | 139 | !! ** Purpose : Choice of the operator for the lateral tracer diffusion |
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| 140 | !! |
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| 141 | !! ** Method : set nldf from the namtra_ldf logicals |
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[3294] | 142 | !! nldf == -2 No lateral diffusion |
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[2030] | 143 | !! nldf == -1 ESOPA test: ALL operators are used |
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| 144 | !! nldf == 0 laplacian operator |
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| 145 | !! nldf == 1 Rotated laplacian operator |
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| 146 | !! nldf == 2 bilaplacian operator |
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| 147 | !! nldf == 3 Rotated bilaplacian |
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| 148 | !!---------------------------------------------------------------------- |
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[3294] | 149 | INTEGER :: ioptio, ierr ! temporary integers |
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[2030] | 150 | !!---------------------------------------------------------------------- |
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| 151 | |
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[3294] | 152 | IF (ABS(rn_aht_0) < 2._wp*TINY(1.e0)) THEN |
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| 153 | IF (ABS(rn_ahtrc_0) < 2._wp*TINY(1.e0)) THEN |
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| 154 | rldf_rat = 1.0_wp |
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| 155 | ELSE |
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| 156 | CALL ctl_stop( 'STOP', 'ldf_ctl : cannot define rldf_rat, rn_aht_0==0, rn_ahtrc_0 /=0' ) |
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| 157 | END IF |
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| 158 | ELSE |
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| 159 | rldf_rat = rn_ahtrc_0 / rn_aht_0 |
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| 160 | END IF |
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[2030] | 161 | ! Define the lateral mixing oparator for tracers |
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| 162 | ! =============================================== |
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[3294] | 163 | |
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[2030] | 164 | ! ! control the input |
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| 165 | ioptio = 0 |
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| 166 | IF( ln_trcldf_lap ) ioptio = ioptio + 1 |
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| 167 | IF( ln_trcldf_bilap ) ioptio = ioptio + 1 |
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| 168 | IF( ioptio > 1 ) CALL ctl_stop( ' use ONE or NONE of the 2 lap/bilap operator type on tracer' ) |
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| 169 | IF( ioptio == 0 ) nldf = -2 ! No lateral diffusion |
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| 170 | ioptio = 0 |
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| 171 | IF( ln_trcldf_level ) ioptio = ioptio + 1 |
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| 172 | IF( ln_trcldf_hor ) ioptio = ioptio + 1 |
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| 173 | IF( ln_trcldf_iso ) ioptio = ioptio + 1 |
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| 174 | IF( ioptio /= 1 ) CALL ctl_stop( ' use only ONE direction (level/hor/iso)' ) |
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| 175 | |
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| 176 | ! defined the type of lateral diffusion from ln_trcldf_... logicals |
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| 177 | ! CAUTION : nldf = 1 is used in trazdf_imp, change it carefully |
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| 178 | ierr = 0 |
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| 179 | IF( ln_trcldf_lap ) THEN ! laplacian operator |
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| 180 | IF ( ln_zco ) THEN ! z-coordinate |
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| 181 | IF ( ln_trcldf_level ) nldf = 0 ! iso-level (no rotation) |
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| 182 | IF ( ln_trcldf_hor ) nldf = 0 ! horizontal (no rotation) |
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| 183 | IF ( ln_trcldf_iso ) nldf = 1 ! isoneutral ( rotation) |
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| 184 | ENDIF |
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| 185 | IF ( ln_zps ) THEN ! z-coordinate |
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| 186 | IF ( ln_trcldf_level ) ierr = 1 ! iso-level not allowed |
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| 187 | IF ( ln_trcldf_hor ) nldf = 0 ! horizontal (no rotation) |
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| 188 | IF ( ln_trcldf_iso ) nldf = 1 ! isoneutral ( rotation) |
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| 189 | ENDIF |
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| 190 | IF ( ln_sco ) THEN ! z-coordinate |
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| 191 | IF ( ln_trcldf_level ) nldf = 0 ! iso-level (no rotation) |
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| 192 | IF ( ln_trcldf_hor ) nldf = 1 ! horizontal ( rotation) |
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| 193 | IF ( ln_trcldf_iso ) nldf = 1 ! isoneutral ( rotation) |
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| 194 | ENDIF |
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| 195 | ENDIF |
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| 196 | |
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| 197 | IF( ln_trcldf_bilap ) THEN ! bilaplacian operator |
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| 198 | IF ( ln_zco ) THEN ! z-coordinate |
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| 199 | IF ( ln_trcldf_level ) nldf = 2 ! iso-level (no rotation) |
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| 200 | IF ( ln_trcldf_hor ) nldf = 2 ! horizontal (no rotation) |
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| 201 | IF ( ln_trcldf_iso ) ierr = 2 ! isoneutral ( rotation) |
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| 202 | ENDIF |
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| 203 | IF ( ln_zps ) THEN ! z-coordinate |
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[3294] | 204 | IF ( ln_trcldf_level ) ierr = 1 ! iso-level not allowed |
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[2030] | 205 | IF ( ln_trcldf_hor ) nldf = 2 ! horizontal (no rotation) |
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| 206 | IF ( ln_trcldf_iso ) ierr = 2 ! isoneutral ( rotation) |
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| 207 | ENDIF |
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| 208 | IF ( ln_sco ) THEN ! z-coordinate |
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| 209 | IF ( ln_trcldf_level ) nldf = 2 ! iso-level (no rotation) |
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| 210 | IF ( ln_trcldf_hor ) nldf = 3 ! horizontal ( rotation) |
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| 211 | IF ( ln_trcldf_iso ) ierr = 2 ! isoneutral ( rotation) |
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| 212 | ENDIF |
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| 213 | ENDIF |
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| 214 | |
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| 215 | IF( ierr == 1 ) CALL ctl_stop( ' iso-level in z-coordinate - partial step, not allowed' ) |
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| 216 | IF( ierr == 2 ) CALL ctl_stop( ' isoneutral bilaplacian operator does not exist' ) |
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| 217 | IF( lk_traldf_eiv .AND. .NOT.ln_trcldf_iso ) & |
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| 218 | CALL ctl_stop( ' eddy induced velocity on tracers', & |
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| 219 | & ' the eddy induced velocity on tracers requires isopycnal laplacian diffusion' ) |
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| 220 | IF( nldf == 1 .OR. nldf == 3 ) THEN ! rotation |
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| 221 | IF( .NOT.lk_ldfslp ) CALL ctl_stop( ' the rotation of the diffusive tensor require key_ldfslp' ) |
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| 222 | #if defined key_offline |
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| 223 | l_traldf_rot = .TRUE. ! needed for trazdf_imp |
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| 224 | #endif |
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| 225 | ENDIF |
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| 226 | |
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| 227 | IF( lk_esopa ) THEN |
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| 228 | IF(lwp) WRITE(numout,*) ' esopa control: use all lateral physics options' |
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| 229 | nldf = -1 |
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| 230 | ENDIF |
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| 231 | |
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| 232 | IF(lwp) THEN |
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| 233 | WRITE(numout,*) |
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| 234 | IF( nldf == -2 ) WRITE(numout,*) ' NO lateral diffusion' |
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| 235 | IF( nldf == -1 ) WRITE(numout,*) ' ESOPA test All scheme used' |
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| 236 | IF( nldf == 0 ) WRITE(numout,*) ' laplacian operator' |
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| 237 | IF( nldf == 1 ) WRITE(numout,*) ' Rotated laplacian operator' |
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| 238 | IF( nldf == 2 ) WRITE(numout,*) ' bilaplacian operator' |
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| 239 | IF( nldf == 3 ) WRITE(numout,*) ' Rotated bilaplacian' |
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| 240 | ENDIF |
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| 241 | |
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[3294] | 242 | IF( ln_trcldf_bilap ) THEN |
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| 243 | IF(lwp) WRITE(numout,*) ' biharmonic tracer diffusion' |
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| 244 | IF( rn_ahtrc_0 > 0 .AND. .NOT. lk_esopa ) CALL ctl_stop( 'The horizontal diffusivity coef. rn_ahtrc_0 must be negative' ) |
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| 245 | ELSE |
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| 246 | IF(lwp) WRITE(numout,*) ' harmonic tracer diffusion (default)' |
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| 247 | IF( rn_ahtrc_0 < 0 .AND. .NOT. lk_esopa ) CALL ctl_stop('The horizontal diffusivity coef. rn_ahtrc_0 must be positive' ) |
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| 248 | ENDIF |
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| 249 | |
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| 250 | ! ratio between active and passive tracers diffusive coef. |
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| 251 | IF (ABS(rn_aht_0) < 2._wp*TINY(1.e0)) THEN |
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| 252 | IF (ABS(rn_ahtrc_0) < 2._wp*TINY(1.e0)) THEN |
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| 253 | rldf_rat = 1.0_wp |
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| 254 | ELSE |
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| 255 | CALL ctl_stop( 'STOP', 'ldf_ctl : cannot define rldf_rat, rn_aht_0==0, rn_ahtrc_0 /=0' ) |
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| 256 | END IF |
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| 257 | ELSE |
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| 258 | rldf_rat = rn_ahtrc_0 / rn_aht_0 |
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| 259 | END IF |
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| 260 | IF( rldf_rat < 0 ) THEN |
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| 261 | IF( .NOT.lk_offline ) THEN |
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| 262 | CALL ctl_stop( 'Choose the same type of diffusive scheme both for active & passive tracers' ) |
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| 263 | ELSE |
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| 264 | CALL ctl_stop( 'Change the sign of rn_aht_0 in namelist to -/+1' ) |
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| 265 | ENDIF |
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| 266 | ENDIF |
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[2030] | 267 | ! |
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| 268 | END SUBROUTINE ldf_ctl |
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| 269 | #else |
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| 270 | !!---------------------------------------------------------------------- |
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| 271 | !! Default option Empty module |
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| 272 | !!---------------------------------------------------------------------- |
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| 273 | CONTAINS |
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| 274 | SUBROUTINE trc_ldf( kt ) |
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| 275 | INTEGER, INTENT(in) :: kt |
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| 276 | WRITE(*,*) 'trc_ldf: You should not have seen this print! error?', kt |
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| 277 | END SUBROUTINE trc_ldf |
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| 278 | #endif |
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| 279 | !!====================================================================== |
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| 280 | END MODULE trcldf |
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