[3443] | 1 | MODULE p2zopt |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p2zopt *** |
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| 4 | !! TOP : LOBSTER Compute the light availability in the water column |
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| 5 | !!====================================================================== |
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| 6 | !! History : - ! 1995-05 (M. Levy) Original code |
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| 7 | !! - ! 1999-09 (J.-M. Andre, M. Levy) |
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| 8 | !! - ! 1999-11 (C. Menkes, M.-A. Foujols) itabe initial |
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| 9 | !! - ! 2000-02 (M.A. Foujols) change x**y par exp(y*log(x)) |
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| 10 | !! NEMO 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 |
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| 11 | !! 3.2 ! 2009-04 (C. Ethe, G. Madec) minor optimisation + style |
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| 12 | !!---------------------------------------------------------------------- |
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[9124] | 13 | |
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| 14 | !!---------------------------------------------------------------------- |
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[3443] | 15 | !! p2z_opt : Compute the light availability in the water column |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE oce_trc ! |
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| 18 | USE trc |
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| 19 | USE sms_pisces |
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[13540] | 20 | USE prtctl ! Print control for debbuging |
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[3443] | 21 | |
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| 22 | IMPLICIT NONE |
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| 23 | PRIVATE |
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| 24 | |
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| 25 | PUBLIC p2z_opt ! |
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| 26 | PUBLIC p2z_opt_init ! |
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| 27 | |
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[4147] | 28 | REAL(wp), PUBLIC :: xkr0 !: water coefficient absorption in red |
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| 29 | REAL(wp), PUBLIC :: xkg0 !: water coefficient absorption in green |
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| 30 | REAL(wp), PUBLIC :: xkrp !: pigment coefficient absorption in red |
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| 31 | REAL(wp), PUBLIC :: xkgp !: pigment coefficient absorption in green |
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| 32 | REAL(wp), PUBLIC :: xlr !: exposant for pigment absorption in red |
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| 33 | REAL(wp), PUBLIC :: xlg !: exposant for pigment absorption in green |
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| 34 | REAL(wp), PUBLIC :: rpig !: chla/chla+phea ratio |
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[3443] | 35 | ! |
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[4147] | 36 | REAL(wp), PUBLIC :: rcchl ! Carbone/Chlorophyl ratio [mgC.mgChla-1] |
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| 37 | REAL(wp), PUBLIC :: redf ! redfield ratio (C:N) for phyto |
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| 38 | REAL(wp), PUBLIC :: reddom ! redfield ratio (C:N) for DOM |
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[3443] | 39 | |
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[12377] | 40 | !! * Substitutions |
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| 41 | # include "do_loop_substitute.h90" |
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[13540] | 42 | # include "domzgr_substitute.h90" |
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[3443] | 43 | !!---------------------------------------------------------------------- |
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[10067] | 44 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[5215] | 45 | !! $Id$ |
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[10068] | 46 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3443] | 47 | !!---------------------------------------------------------------------- |
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| 48 | CONTAINS |
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| 49 | |
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[12377] | 50 | SUBROUTINE p2z_opt( kt, Kmm ) |
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[3443] | 51 | !!--------------------------------------------------------------------- |
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| 52 | !! *** ROUTINE p2z_opt *** |
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| 53 | !! |
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| 54 | !! ** Purpose : computes the light propagation in the water column |
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| 55 | !! and the euphotic layer depth |
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| 56 | !! |
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| 57 | !! ** Method : local par is computed in w layers using light propagation |
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| 58 | !! mean par in t layers are computed by integration |
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| 59 | !! |
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| 60 | !!gm please remplace the '???' by true comments |
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| 61 | !! ** Action : etot ??? |
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| 62 | !! neln ??? |
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| 63 | !!--------------------------------------------------------------------- |
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| 64 | !! |
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| 65 | INTEGER, INTENT( in ) :: kt ! index of the time stepping |
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[12377] | 66 | INTEGER, INTENT( in ) :: Kmm ! time level index |
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[3443] | 67 | !! |
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| 68 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 69 | CHARACTER (len=25) :: charout ! temporary character |
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| 70 | REAL(wp) :: zpig ! log of the total pigment |
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| 71 | REAL(wp) :: zkr, zkg ! total absorption coefficient in red and green |
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| 72 | REAL(wp) :: zcoef ! temporary scalar |
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[9125] | 73 | REAL(wp), DIMENSION(jpi,jpj ) :: zpar100, zpar0m |
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| 74 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zparr, zparg |
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[3443] | 75 | !!--------------------------------------------------------------------- |
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| 76 | ! |
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[9124] | 77 | IF( ln_timing ) CALL timing_start('p2z_opt') |
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[3443] | 78 | ! |
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| 79 | |
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| 80 | IF( kt == nittrc000 ) THEN |
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| 81 | IF(lwp) WRITE(numout,*) |
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| 82 | IF(lwp) WRITE(numout,*) ' p2z_opt : LOBSTER optic-model' |
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| 83 | IF(lwp) WRITE(numout,*) ' ~~~~~~~ ' |
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| 84 | ENDIF |
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| 85 | |
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| 86 | ! ! surface irradiance |
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[5385] | 87 | ! ! ------------------ |
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| 88 | IF( ln_dm2dc ) THEN ; zpar0m(:,:) = qsr_mean(:,:) * 0.43 |
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| 89 | ELSE ; zpar0m(:,:) = qsr (:,:) * 0.43 |
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| 90 | ENDIF |
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[3443] | 91 | zpar100(:,:) = zpar0m(:,:) * 0.01 |
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| 92 | zparr (:,:,1) = zpar0m(:,:) * 0.5 |
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| 93 | zparg (:,:,1) = zpar0m(:,:) * 0.5 |
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| 94 | |
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| 95 | ! ! Photosynthetically Available Radiation (PAR) |
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| 96 | zcoef = 12 * redf / rcchl / rpig ! -------------------------------------- |
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[13540] | 97 | DO_3D( 1, 1, 1, 1, 2, jpk ) ! local par at w-levels |
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[12377] | 98 | zpig = LOG( MAX( TINY(0.), tr(ji,jj,jk-1,jpphy,Kmm) ) * zcoef ) |
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| 99 | zkr = xkr0 + xkrp * EXP( xlr * zpig ) |
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| 100 | zkg = xkg0 + xkgp * EXP( xlg * zpig ) |
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| 101 | zparr(ji,jj,jk) = zparr(ji,jj,jk-1) * EXP( -zkr * e3t(ji,jj,jk-1,Kmm) ) |
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| 102 | zparg(ji,jj,jk) = zparg(ji,jj,jk-1) * EXP( -zkg * e3t(ji,jj,jk-1,Kmm) ) |
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| 103 | END_3D |
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[13540] | 104 | DO_3D( 1, 1, 1, 1, 1, jpkm1 ) ! mean par at t-levels |
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[12377] | 105 | zpig = LOG( MAX( TINY(0.), tr(ji,jj,jk,jpphy,Kmm) ) * zcoef ) |
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| 106 | zkr = xkr0 + xkrp * EXP( xlr * zpig ) |
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| 107 | zkg = xkg0 + xkgp * EXP( xlg * zpig ) |
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| 108 | zparr(ji,jj,jk) = zparr(ji,jj,jk) / ( zkr * e3t(ji,jj,jk,Kmm) ) * ( 1 - EXP( -zkr * e3t(ji,jj,jk,Kmm) ) ) |
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| 109 | zparg(ji,jj,jk) = zparg(ji,jj,jk) / ( zkg * e3t(ji,jj,jk,Kmm) ) * ( 1 - EXP( -zkg * e3t(ji,jj,jk,Kmm) ) ) |
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| 110 | etot (ji,jj,jk) = MAX( zparr(ji,jj,jk) + zparg(ji,jj,jk), 1.e-15 ) |
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| 111 | END_3D |
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[3443] | 112 | |
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| 113 | ! ! Euphotic layer |
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| 114 | ! ! -------------- |
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| 115 | neln(:,:) = 1 ! euphotic layer level |
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[13540] | 116 | DO_3D( 1, 1, 1, 1, 1, jpkm1 ) ! (i.e. 1rst T-level strictly below EL bottom) |
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[12377] | 117 | IF( etot(ji,jj,jk) >= zpar100(ji,jj) ) neln(ji,jj) = jk + 1 |
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| 118 | END_3D |
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[3443] | 119 | ! ! Euphotic layer depth |
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[13540] | 120 | DO_2D( 1, 1, 1, 1 ) |
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[12377] | 121 | heup(ji,jj) = gdepw(ji,jj,neln(ji,jj),Kmm) |
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| 122 | END_2D |
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[3443] | 123 | |
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| 124 | |
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[12377] | 125 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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[3443] | 126 | WRITE(charout, FMT="('opt')") |
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[13540] | 127 | CALL prt_ctl_info( charout, cdcomp = 'top' ) |
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| 128 | CALL prt_ctl( tab4d_1=tr(:,:,:,:,Kmm), mask1=tmask, clinfo=ctrcnm ) |
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[3443] | 129 | ENDIF |
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| 130 | ! |
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[9124] | 131 | IF( ln_timing ) CALL timing_stop('p2z_opt') |
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[3443] | 132 | ! |
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| 133 | END SUBROUTINE p2z_opt |
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| 134 | |
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[9019] | 135 | |
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[3443] | 136 | SUBROUTINE p2z_opt_init |
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| 137 | !!---------------------------------------------------------------------- |
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| 138 | !! *** ROUTINE p2z_opt_init *** |
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| 139 | !! |
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| 140 | !! ** Purpose : optical parameters |
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| 141 | !! |
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| 142 | !! ** Method : Read the namlobopt namelist and check the parameters |
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| 143 | !! |
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| 144 | !!---------------------------------------------------------------------- |
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[9124] | 145 | INTEGER :: ios ! Local integer |
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| 146 | !! |
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[3443] | 147 | NAMELIST/namlobopt/ xkg0, xkr0, xkgp, xkrp, xlg, xlr, rpig |
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| 148 | NAMELIST/namlobrat/ rcchl, redf, reddom |
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| 149 | !!---------------------------------------------------------------------- |
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| 150 | |
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[4147] | 151 | READ ( numnatp_ref, namlobopt, IOSTAT = ios, ERR = 901) |
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[11536] | 152 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namlobopt in reference namelist' ) |
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[3443] | 153 | |
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[4147] | 154 | READ ( numnatp_cfg, namlobopt, IOSTAT = ios, ERR = 902 ) |
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[11536] | 155 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namlobopt in configuration namelist' ) |
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[4624] | 156 | IF(lwm) WRITE ( numonp, namlobopt ) |
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[4147] | 157 | |
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[3443] | 158 | IF(lwp) THEN |
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| 159 | WRITE(numout,*) |
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| 160 | WRITE(numout,*) ' Namelist namlobopt' |
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| 161 | WRITE(numout,*) ' green water absorption coeff xkg0 = ', xkg0 |
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| 162 | WRITE(numout,*) ' red water absorption coeff xkr0 = ', xkr0 |
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| 163 | WRITE(numout,*) ' pigment red absorption coeff xkrp = ', xkrp |
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| 164 | WRITE(numout,*) ' pigment green absorption coeff xkgp = ', xkgp |
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| 165 | WRITE(numout,*) ' green chl exposant xlg = ', xlg |
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| 166 | WRITE(numout,*) ' red chl exposant xlr = ', xlr |
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| 167 | WRITE(numout,*) ' chla/chla+phea ratio rpig = ', rpig |
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| 168 | WRITE(numout,*) ' ' |
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| 169 | ENDIF |
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| 170 | ! |
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[4147] | 171 | READ ( numnatp_ref, namlobrat, IOSTAT = ios, ERR = 903) |
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[11536] | 172 | 903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namlobrat in reference namelist' ) |
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[3443] | 173 | |
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[4147] | 174 | READ ( numnatp_cfg, namlobrat, IOSTAT = ios, ERR = 904 ) |
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[11536] | 175 | 904 IF( ios > 0 ) CALL ctl_nam ( ios , 'namlobrat in configuration namelist' ) |
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[4624] | 176 | IF(lwm) WRITE ( numonp, namlobrat ) |
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[4147] | 177 | |
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[3443] | 178 | IF(lwp) THEN |
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| 179 | WRITE(numout,*) ' Namelist namlobrat' |
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| 180 | WRITE(numout,*) ' carbone/chlorophyl ratio rcchl = ', rcchl |
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| 181 | WRITE(numout,*) ' redfield ratio c:n for phyto redf =', redf |
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| 182 | WRITE(numout,*) ' redfield ratio c:n for DOM reddom =', reddom |
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| 183 | WRITE(numout,*) ' ' |
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| 184 | ENDIF |
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| 185 | ! |
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| 186 | END SUBROUTINE p2z_opt_init |
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| 187 | |
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| 188 | !!====================================================================== |
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[9788] | 189 | END MODULE p2zopt |
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