[3] | 1 | MODULE limthd |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE limthd *** |
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| 4 | !! LIM thermo ice model : ice thermodynamic |
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| 5 | !!====================================================================== |
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| 6 | #if defined key_ice_lim |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_ice_lim' : LIM sea-ice model |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! lim_thd : thermodynamic of sea ice |
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| 11 | !! lim_thd_init : initialisation of sea-ice thermodynamic |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! * Modules used |
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| 14 | USE phycst ! physical constants |
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| 15 | USE dom_oce ! ocean space and time domain variables |
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| 16 | USE lbclnk |
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| 17 | USE in_out_manager ! I/O manager |
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| 18 | |
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| 19 | USE ice ! LIM sea-ice variables |
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| 20 | USE ice_oce ! sea-ice/ocean variables |
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| 21 | USE flx_oce ! sea-ice/ocean forcings variables |
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| 22 | USE thd_ice ! LIM thermodynamic sea-ice variables |
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| 23 | USE dom_ice ! LIM sea-ice domain |
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| 24 | USE iceini |
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| 25 | USE limthd_zdf |
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| 26 | USE limthd_lac |
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| 27 | USE limtab |
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| 28 | |
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| 29 | IMPLICIT NONE |
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| 30 | PRIVATE |
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| 31 | |
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| 32 | !! * Routine accessibility |
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| 33 | PUBLIC lim_thd ! called by lim_step |
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| 34 | |
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| 35 | !! * Module variables |
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| 36 | REAL(wp) :: & ! constant values |
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| 37 | epsi20 = 1e-20 , & |
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| 38 | epsi16 = 1e-16 , & |
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| 39 | epsi04 = 1e-04 , & |
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| 40 | zzero = 0.0 , & |
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| 41 | zone = 1.0 |
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| 42 | !! * Substitutions |
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| 43 | # include "vectopt_loop_substitute.h90" |
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| 44 | !!-------- ------------------------------------------------------------- |
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| 45 | !! LIM 2.0 , UCL-LODYC-IPSL (2003) |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | |
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| 48 | CONTAINS |
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| 49 | |
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| 50 | SUBROUTINE lim_thd |
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| 51 | !!------------------------------------------------------------------- |
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| 52 | !! *** ROUTINE lim_thd *** |
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| 53 | !! |
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| 54 | !! ** Purpose : This routine manages the ice thermodynamic. |
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| 55 | !! |
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| 56 | !! ** Action : - Initialisation of some variables |
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| 57 | !! - Some preliminary computation (oceanic heat flux |
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| 58 | !! at the ice base, snow acc.,heat budget of the leads) |
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| 59 | !! - selection of the icy points and put them in an array |
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| 60 | !! - call lim_vert_ther for vert ice thermodynamic |
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| 61 | !! - back to the geographic grid |
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| 62 | !! - selection of points for lateral accretion |
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| 63 | !! - call lim_lat_acc for the ice accretion |
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| 64 | !! - back to the geographic grid |
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| 65 | !! |
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| 66 | !! |
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| 67 | !! ** References : |
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| 68 | !! H. Goosse et al. 1996, Bul. Soc. Roy. Sc. Liege, 65, 87-90 |
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| 69 | !! |
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| 70 | !! History : |
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| 71 | !! 1.0 ! 00-01 (LIM) |
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| 72 | !! 2.0 ! 02-07 (C. Ethe, G. Madec) F90 |
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| 73 | !!--------------------------------------------------------------------- |
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| 74 | !! * Local variables |
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| 75 | INTEGER :: ji, jj, & ! dummy loop indices |
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| 76 | nbpb , & ! nb of icy pts for thermo. cal. |
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| 77 | nbpac ! nb of pts for lateral accretion |
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| 78 | |
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| 79 | REAL(wp) :: & |
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| 80 | zfric_umin = 5e-03 , & ! lower bound for the friction velocity |
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| 81 | zfric_umax = 2e-02 ! upper bound for the friction velocity |
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| 82 | |
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| 83 | REAL(wp) :: & |
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| 84 | zinda , & ! switch for test. the val. of concen. |
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| 85 | zindb, zindg , & ! switches for test. the val of arg |
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| 86 | za , zh, zthsnice , & |
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| 87 | zfric_u , & ! friction velocity |
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| 88 | zfnsol , & ! total non solar heat |
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| 89 | zfontn , & ! heat flux from snow thickness |
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| 90 | zfntlat, zpareff ! test. the val. of lead heat budget |
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| 91 | |
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| 92 | REAL(wp), DIMENSION(jpi,jpj) :: & |
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| 93 | zhicifp , & ! ice thickness for outputs |
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| 94 | zqlbsbq ! link with lead energy budget qldif |
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| 95 | !!------------------------------------------------------------------- |
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| 96 | |
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| 97 | IF( numit == nstart ) CALL lim_thd_init ! Initialization (first time-step only) |
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| 98 | |
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| 99 | !-------------------------------------------! |
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| 100 | ! Initilization of diagnostic variables ! |
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| 101 | !-------------------------------------------! |
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| 102 | |
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| 103 | !i est-ce utile? oui au moins en partie |
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| 104 | rdvosif(:,:) = 0.0 ! variation of ice volume at surface |
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| 105 | rdvobif(:,:) = 0.0 ! variation of ice volume at bottom |
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| 106 | fdvolif(:,:) = 0.0 ! total variation of ice volume |
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| 107 | rdvonif(:,:) = 0.0 ! lateral variation of ice volume |
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| 108 | fstric (:,:) = 0.0 ! part of solar radiation absorbing inside the ice |
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| 109 | fscmbq (:,:) = 0.0 ! linked with fstric |
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| 110 | ffltbif(:,:) = 0.0 ! linked with fstric |
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| 111 | qfvbq (:,:) = 0.0 ! linked with fstric |
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| 112 | rdmsnif(:,:) = 0.0 ! variation of snow mass per unit area |
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| 113 | rdmicif(:,:) = 0.0 ! variation of ice mass per unit area |
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| 114 | hicifp (:,:) = 0.0 ! daily thermodynamic ice production. |
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| 115 | |
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| 116 | DO jj = 1, jpj |
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| 117 | DO ji = 1, jpi |
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| 118 | hsnif(ji,jj) = hsnif(ji,jj) * MAX( zzero, SIGN( zone , hsnif(ji,jj) - epsi04 ) ) |
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| 119 | END DO |
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| 120 | END DO |
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| 121 | IF( l_ctl .AND. lwp ) WRITE(numout,*) 'lim_thd : ', SUM( hsnif(:,:) ) , ' hsnif' |
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| 122 | |
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| 123 | |
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| 124 | !-----------------------------------! |
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| 125 | ! Treatment of particular cases ! |
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| 126 | !-----------------------------------! |
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| 127 | |
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| 128 | DO jj = 1, jpj |
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| 129 | DO ji = 1, jpi |
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| 130 | ! snow is transformed into ice if the original ice cover disappears. |
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| 131 | zindg = tms(ji,jj) * MAX( zzero , SIGN( zone , -hicif(ji,jj) ) ) |
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| 132 | hicif(ji,jj) = hicif(ji,jj) + zindg * rhosn * hsnif(ji,jj) / rau0 |
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| 133 | hsnif(ji,jj) = ( zone - zindg ) * hsnif(ji,jj) + zindg * hicif(ji,jj) * ( rau0 - rhoic ) / rhosn |
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| 134 | dmgwi(ji,jj) = zindg * (1.0 - frld(ji,jj)) * rhoic * hicif(ji,jj) ! snow/ice mass |
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| 135 | |
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| 136 | ! the lead fraction, frld, must be little than or equal to amax (ice ridging). |
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| 137 | zthsnice = hsnif(ji,jj) + hicif(ji,jj) |
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| 138 | zindb = tms(ji,jj) * ( 1.0 - MAX( zzero , SIGN( zone , - zthsnice ) ) ) |
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| 139 | za = zindb * MIN( zone, ( 1.0 - frld(ji,jj) ) * uscomi ) |
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| 140 | hsnif (ji,jj) = hsnif(ji,jj) * za |
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| 141 | hicif (ji,jj) = hicif(ji,jj) * za |
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| 142 | qstoif(ji,jj) = qstoif(ji,jj) * za |
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| 143 | frld (ji,jj) = 1.0 - zindb * ( 1.0 - frld(ji,jj) ) / MAX( za , epsi20 ) |
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| 144 | |
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| 145 | ! the in situ ice thickness, hicif, must be equal to or greater than hiclim. |
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| 146 | zh = MAX( zone , zindb * hiclim / MAX( hicif(ji,jj) , epsi20 ) ) |
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| 147 | hsnif (ji,jj) = hsnif(ji,jj) * zh |
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| 148 | hicif (ji,jj) = hicif(ji,jj) * zh |
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| 149 | qstoif(ji,jj) = qstoif(ji,jj) * zh |
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| 150 | frld (ji,jj) = ( frld(ji,jj) + ( zh - 1.0 ) ) / zh |
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| 151 | END DO |
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| 152 | END DO |
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| 153 | IF( l_ctl .AND. lwp ) THEN |
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| 154 | WRITE(numout,*) 'lim_thd: hicif : ', SUM( hicif ), ' hsnif ', SUM( hsnif ) |
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| 155 | WRITE(numout,*) 'lim_thd: dmgwi : ', SUM( dmgwi ), ' qstoif ', SUM( qstoif ) |
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| 156 | WRITE(numout,*) 'lim_thd: frld : ', SUM( frld ) |
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| 157 | ENDIF |
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| 158 | |
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| 159 | |
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| 160 | !-------------------------------! |
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| 161 | ! Thermodynamics of sea ice ! |
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| 162 | !-------------------------------! |
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| 163 | |
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| 164 | ! Partial computation of forcing for the thermodynamic sea ice model. |
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| 165 | !-------------------------------------------------------------------------- |
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| 166 | |
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| 167 | !CDIR NOVERRCHK |
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| 168 | DO jj = 1, jpj |
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| 169 | !CDIR NOVERRCHK |
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| 170 | DO ji = 1, jpi |
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| 171 | zthsnice = hsnif(ji,jj) + hicif(ji,jj) |
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| 172 | zindb = tms(ji,jj) * ( 1.0 - MAX( zzero , SIGN( zone , - zthsnice ) ) ) |
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| 173 | pfrld(ji,jj) = frld(ji,jj) |
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| 174 | zinda = 1.0 - MAX( zzero , SIGN( zone , - ( 1.0 - pfrld(ji,jj) ) ) ) |
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| 175 | |
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| 176 | ! solar irradiance transmission at the mixed layer bottom and used in the lead heat budget |
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| 177 | thcm(ji,jj) = 0.0 |
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| 178 | |
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| 179 | ! net downward heat flux from the ice to the ocean, expressed as a function of ocean |
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| 180 | ! temperature and turbulent mixing (McPhee, 1992) |
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| 181 | zfric_u = MAX ( MIN( SQRT( ust2s(ji,jj) ) , zfric_umax ) , zfric_umin ) ! friction velocity |
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| 182 | fdtcn(ji,jj) = zindb * rau0 * rcp * 0.006 * zfric_u * ( sst_io(ji,jj) - tfu(ji,jj) ) |
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| 183 | qdtcn(ji,jj) = zindb * fdtcn(ji,jj) * frld(ji,jj) * rdt_ice |
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| 184 | |
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| 185 | ! partial computation of the lead energy budget (qldif) |
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| 186 | zfontn = ( sprecip(ji,jj) / rhosn ) * xlsn ! energy for melting |
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| 187 | zfnsol = qnsr_oce(ji,jj) ! total non solar flux |
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| 188 | qldif(ji,jj) = tms(ji,jj) * ( qsr_oce(ji,jj) * ( 1.0 - thcm(ji,jj) ) & |
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| 189 | & + zfnsol + fdtcn(ji,jj) - zfontn & |
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| 190 | & + ( 1.0 - zindb ) * fsbbq(ji,jj) ) & |
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| 191 | & * frld(ji,jj) * rdt_ice |
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| 192 | ! parlat : percentage of energy used for lateral ablation (0.0) |
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| 193 | zfntlat = 1.0 - MAX( zzero , SIGN( zone , - qldif(ji,jj) ) ) |
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| 194 | zpareff = 1.0 + ( parlat - 1.0 ) * zinda * zfntlat |
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| 195 | zqlbsbq(ji,jj) = qldif(ji,jj) * ( 1.0 - zpareff ) / MAX( (1.0 - frld(ji,jj)) * rdt_ice , epsi16 ) |
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| 196 | qldif (ji,jj) = zpareff * qldif(ji,jj) |
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| 197 | qdtcn (ji,jj) = zpareff * qdtcn(ji,jj) |
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| 198 | |
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| 199 | ! energy needed to bring ocean surface layer until its freezing |
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| 200 | qcmif (ji,jj) = rau0 * rcp * dz * ( tfu(ji,jj) - sst_io(ji,jj) ) * ( 1 - zinda ) |
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| 201 | |
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| 202 | ! calculate oceanic heat flux. |
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| 203 | fbif (ji,jj) = zindb * ( fsbbq(ji,jj) / MAX( (1.0 - frld(ji,jj)) , epsi20 ) + fdtcn(ji,jj) ) |
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| 204 | |
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| 205 | ! computation of the daily thermodynamic ice production (only needed for output) |
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| 206 | zhicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) ) |
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| 207 | END DO |
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| 208 | END DO |
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| 209 | |
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| 210 | |
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| 211 | ! Select icy points and fulfill arrays for the vectorial grid. |
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| 212 | !---------------------------------------------------------------------- |
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| 213 | nbpb = 0 |
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| 214 | DO jj = 1, jpj |
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| 215 | DO ji = 1, jpi |
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| 216 | IF ( frld(ji,jj) < 1.0 ) THEN |
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| 217 | nbpb = nbpb + 1 |
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| 218 | npb(nbpb) = (jj - 1) * jpi + ji |
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| 219 | ENDIF |
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| 220 | END DO |
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| 221 | END DO |
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| 222 | IF( l_ctl .AND. lwp ) THEN |
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| 223 | WRITE(numout,*) 'lim_thd: pfrld ', SUM( pfrld ), ' thcm ', SUM( thcm ) |
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| 224 | WRITE(numout,*) 'lim_thd: fdtcn ', SUM( fdtcn ), ' qdtcn ', SUM( qdtcn ) |
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| 225 | WRITE(numout,*) 'lim_thd: qldif ', SUM( qldif ), ' zqlbsbq ', SUM( zqlbsbq ) |
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| 226 | WRITE(numout,*) 'lim_thd: qcmif ', SUM( qcmif ), ' fbif ', SUM( fbif ) |
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| 227 | WRITE(numout,*) 'lim_thd: qcmif ', SUM( qcmif*tms ) |
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| 228 | WRITE(numout,*) 'lim_thd: zhicifp', SUM( zhicifp ) |
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| 229 | WRITE(numout,*) 'limthd : nbpb = ', nbpb |
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| 230 | ENDIF |
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| 231 | |
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| 232 | |
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| 233 | ! If there is no ice, do nothing. Otherwise, compute Top and Bottom accretion/ablation |
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| 234 | !------------------------------------------------------------------------------------ |
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| 235 | |
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| 236 | IF ( nbpb > 0) THEN |
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| 237 | |
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| 238 | ! put the variable in a 1-D array for thermodynamics process |
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| 239 | CALL tab_2d_1d( nbpb, frld_1d (1:nbpb) , frld , jpi, jpj, npb(1:nbpb) ) |
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| 240 | CALL tab_2d_1d( nbpb, h_ice_1d (1:nbpb) , hicif , jpi, jpj, npb(1:nbpb) ) |
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| 241 | CALL tab_2d_1d( nbpb, h_snow_1d (1:nbpb) , hsnif , jpi, jpj, npb(1:nbpb) ) |
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| 242 | CALL tab_2d_1d( nbpb, sist_1d (1:nbpb) , sist , jpi, jpj, npb(1:nbpb) ) |
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| 243 | CALL tab_2d_1d( nbpb, tbif_1d (1:nbpb , 1 ), tbif(:,:,1), jpi, jpj, npb(1:nbpb) ) |
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| 244 | CALL tab_2d_1d( nbpb, tbif_1d (1:nbpb , 2 ), tbif(:,:,2), jpi, jpj, npb(1:nbpb) ) |
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| 245 | CALL tab_2d_1d( nbpb, tbif_1d (1:nbpb , 3 ), tbif(:,:,3), jpi, jpj, npb(1:nbpb) ) |
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| 246 | CALL tab_2d_1d( nbpb, qsr_ice_1d (1:nbpb) , qsr_ice , jpi, jpj, npb(1:nbpb) ) |
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| 247 | CALL tab_2d_1d( nbpb, fr1_i0_1d (1:nbpb) , fr1_i0 , jpi, jpj, npb(1:nbpb) ) |
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| 248 | CALL tab_2d_1d( nbpb, fr2_i0_1d (1:nbpb) , fr2_i0 , jpi, jpj, npb(1:nbpb) ) |
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| 249 | CALL tab_2d_1d( nbpb, qnsr_ice_1d(1:nbpb) , qnsr_ice , jpi, jpj, npb(1:nbpb) ) |
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| 250 | CALL tab_2d_1d( nbpb, qla_ice_1d (1:nbpb) , qla_ice , jpi, jpj, npb(1:nbpb) ) |
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| 251 | CALL tab_2d_1d( nbpb, dqla_ice_1d(1:nbpb) , dqla_ice , jpi, jpj, npb(1:nbpb) ) |
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| 252 | CALL tab_2d_1d( nbpb, dqns_ice_1d(1:nbpb) , dqns_ice , jpi, jpj, npb(1:nbpb) ) |
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| 253 | CALL tab_2d_1d( nbpb, tfu_1d (1:nbpb) , tfu , jpi, jpj, npb(1:nbpb) ) |
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| 254 | CALL tab_2d_1d( nbpb, sprecip_1d (1:nbpb) , sprecip , jpi, jpj, npb(1:nbpb) ) |
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| 255 | CALL tab_2d_1d( nbpb, fbif_1d (1:nbpb) , fbif , jpi, jpj, npb(1:nbpb) ) |
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| 256 | CALL tab_2d_1d( nbpb, thcm_1d (1:nbpb) , thcm , jpi, jpj, npb(1:nbpb) ) |
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| 257 | CALL tab_2d_1d( nbpb, qldif_1d (1:nbpb) , qldif , jpi, jpj, npb(1:nbpb) ) |
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| 258 | CALL tab_2d_1d( nbpb, qstbif_1d (1:nbpb) , qstoif , jpi, jpj, npb(1:nbpb) ) |
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| 259 | CALL tab_2d_1d( nbpb, rdmicif_1d (1:nbpb) , rdmicif , jpi, jpj, npb(1:nbpb) ) |
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| 260 | CALL tab_2d_1d( nbpb, dmgwi_1d (1:nbpb) , dmgwi , jpi, jpj, npb(1:nbpb) ) |
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| 261 | CALL tab_2d_1d( nbpb, qlbbq_1d (1:nbpb) , zqlbsbq , jpi, jpj, npb(1:nbpb) ) |
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| 262 | |
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| 263 | |
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| 264 | |
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| 265 | ! call the ice growth routine. |
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| 266 | CALL lim_thd_zdf( 1, nbpb ) |
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| 267 | |
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| 268 | ! back to the geographic grid. |
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| 269 | CALL tab_1d_2d( nbpb, frld , npb, frld_1d (1:nbpb) , jpi, jpj ) |
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| 270 | CALL tab_1d_2d( nbpb, hicif , npb, h_ice_1d (1:nbpb) , jpi, jpj ) |
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| 271 | CALL tab_1d_2d( nbpb, hsnif , npb, h_snow_1d (1:nbpb) , jpi, jpj ) |
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| 272 | CALL tab_1d_2d( nbpb, sist , npb, sist_1d (1:nbpb) , jpi, jpj ) |
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| 273 | CALL tab_1d_2d( nbpb, tbif(:,:,1), npb, tbif_1d (1:nbpb , 1 ), jpi, jpj ) |
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| 274 | CALL tab_1d_2d( nbpb, tbif(:,:,2), npb, tbif_1d (1:nbpb , 2 ), jpi, jpj ) |
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| 275 | CALL tab_1d_2d( nbpb, tbif(:,:,3), npb, tbif_1d (1:nbpb , 3 ), jpi, jpj ) |
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| 276 | CALL tab_1d_2d( nbpb, fscmbq , npb, fscbq_1d (1:nbpb) , jpi, jpj ) |
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| 277 | CALL tab_1d_2d( nbpb, ffltbif , npb, fltbif_1d (1:nbpb) , jpi, jpj ) |
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| 278 | CALL tab_1d_2d( nbpb, fstric , npb, fstbif_1d (1:nbpb) , jpi, jpj ) |
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| 279 | CALL tab_1d_2d( nbpb, qldif , npb, qldif_1d (1:nbpb) , jpi, jpj ) |
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| 280 | CALL tab_1d_2d( nbpb, qfvbq , npb, qfvbq_1d (1:nbpb) , jpi, jpj ) |
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| 281 | CALL tab_1d_2d( nbpb, qstoif , npb, qstbif_1d (1:nbpb) , jpi, jpj ) |
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| 282 | CALL tab_1d_2d( nbpb, rdmicif , npb, rdmicif_1d(1:nbpb) , jpi, jpj ) |
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| 283 | CALL tab_1d_2d( nbpb, dmgwi , npb, dmgwi_1d (1:nbpb) , jpi, jpj ) |
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| 284 | CALL tab_1d_2d( nbpb, rdmsnif , npb, rdmsnif_1d(1:nbpb) , jpi, jpj ) |
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| 285 | CALL tab_1d_2d( nbpb, rdvosif , npb, dvsbq_1d (1:nbpb) , jpi, jpj ) |
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| 286 | CALL tab_1d_2d( nbpb, rdvobif , npb, dvbbq_1d (1:nbpb) , jpi, jpj ) |
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| 287 | CALL tab_1d_2d( nbpb, fdvolif , npb, dvlbq_1d (1:nbpb) , jpi, jpj ) |
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| 288 | CALL tab_1d_2d( nbpb, rdvonif , npb, dvnbq_1d (1:nbpb) , jpi, jpj ) |
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| 289 | |
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| 290 | |
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| 291 | ENDIF |
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| 292 | |
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| 293 | |
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| 294 | ! Up-date sea ice thickness. |
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| 295 | !--------------------------------- |
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| 296 | DO jj = 1, jpj |
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| 297 | DO ji = 1, jpi |
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| 298 | phicif(ji,jj) = hicif(ji,jj) |
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| 299 | hicif(ji,jj) = hicif(ji,jj) * ( zone - MAX( zzero, SIGN( zone, - ( 1.0 - frld(ji,jj) ) ) ) ) |
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| 300 | END DO |
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| 301 | END DO |
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| 302 | |
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| 303 | |
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| 304 | ! Tricky trick : add 2 to frld in the Southern Hemisphere. |
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| 305 | !---------------------------------------------------------- |
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| 306 | DO jj = 1, jeqm1 !ibug in mpp |
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| 307 | DO ji = 1, jpi |
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| 308 | frld(ji,jj) = frld(ji,jj) + 2.0 |
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| 309 | END DO |
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| 310 | END DO |
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| 311 | |
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| 312 | |
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| 313 | ! Select points for lateral accretion (this occurs when heat exchange |
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| 314 | ! between ice and ocean is negative; ocean losing heat) |
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| 315 | !----------------------------------------------------------------- |
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| 316 | nbpac = 0 |
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| 317 | DO jj = 1, jpj |
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| 318 | DO ji = 1, jpi |
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| 319 | !i yes! IF ( ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.0 ) THEN |
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| 320 | IF ( tms(ji,jj) * ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.0 ) THEN |
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| 321 | nbpac = nbpac + 1 |
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| 322 | npac( nbpac ) = (jj - 1) * jpi + ji |
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| 323 | ENDIF |
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| 324 | END DO |
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| 325 | END DO |
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| 326 | |
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| 327 | IF( l_ctl .AND. lwp ) THEN |
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| 328 | WRITE(numout,*) 'lim_thd : phicif ', SUM( phicif ), ' hicif ', SUM( hicif ) |
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| 329 | WRITE(numout,*) 'lim_thd : nbpac = ', nbpac |
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| 330 | ENDIF |
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| 331 | |
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| 332 | |
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| 333 | ! |
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| 334 | ! If ocean gains heat do nothing ; otherwise, one performs lateral accretion |
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| 335 | !-------------------------------------------------------------------------------- |
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| 336 | |
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| 337 | IF ( nbpac > 0 ) THEN |
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| 338 | |
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| 339 | !...Put the variable in a 1-D array for lateral accretion |
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| 340 | CALL tab_2d_1d( nbpac, frld_1d (1:nbpac) , frld , jpi, jpj, npac(1:nbpac) ) |
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| 341 | CALL tab_2d_1d( nbpac, h_snow_1d (1:nbpac) , hsnif , jpi, jpj, npac(1:nbpac) ) |
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| 342 | CALL tab_2d_1d( nbpac, h_ice_1d (1:nbpac) , hicif , jpi, jpj, npac(1:nbpac) ) |
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| 343 | CALL tab_2d_1d( nbpac, tbif_1d (1:nbpac , 1 ), tbif(:,:,1), jpi, jpj, npac(1:nbpac) ) |
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| 344 | CALL tab_2d_1d( nbpac, tbif_1d (1:nbpac , 2 ), tbif(:,:,2), jpi, jpj, npac(1:nbpac) ) |
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| 345 | CALL tab_2d_1d( nbpac, tbif_1d (1:nbpac , 3 ), tbif(:,:,3), jpi, jpj, npac(1:nbpac) ) |
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| 346 | CALL tab_2d_1d( nbpac, qldif_1d (1:nbpac) , qldif , jpi, jpj, npac(1:nbpac) ) |
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| 347 | CALL tab_2d_1d( nbpac, qcmif_1d (1:nbpac) , qcmif , jpi, jpj, npac(1:nbpac) ) |
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| 348 | CALL tab_2d_1d( nbpac, qstbif_1d (1:nbpac) , qstoif , jpi, jpj, npac(1:nbpac) ) |
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| 349 | CALL tab_2d_1d( nbpac, rdmicif_1d(1:nbpac) , rdmicif , jpi, jpj, npac(1:nbpac) ) |
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| 350 | CALL tab_2d_1d( nbpac, dvlbq_1d (1:nbpac) , fdvolif , jpi, jpj, npac(1:nbpac) ) |
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| 351 | CALL tab_2d_1d( nbpac, tfu_1d (1:nbpac) , tfu , jpi, jpj, npac(1:nbpac) ) |
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| 352 | |
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| 353 | ! call lateral accretion routine. |
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| 354 | CALL lim_thd_lac( 1 , nbpac ) |
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| 355 | |
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| 356 | ! back to the geographic grid |
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| 357 | CALL tab_1d_2d( nbpac, frld , npac(1:nbpac), frld_1d (1:nbpac) , jpi, jpj ) |
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| 358 | CALL tab_1d_2d( nbpac, hsnif , npac(1:nbpac), h_snow_1d (1:nbpac) , jpi, jpj ) |
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| 359 | CALL tab_1d_2d( nbpac, hicif , npac(1:nbpac), h_ice_1d (1:nbpac) , jpi, jpj ) |
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| 360 | CALL tab_1d_2d( nbpac, tbif(:,:,1), npac(1:nbpac), tbif_1d (1:nbpac , 1 ), jpi, jpj ) |
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| 361 | CALL tab_1d_2d( nbpac, tbif(:,:,2), npac(1:nbpac), tbif_1d (1:nbpac , 2 ), jpi, jpj ) |
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| 362 | CALL tab_1d_2d( nbpac, tbif(:,:,3), npac(1:nbpac), tbif_1d (1:nbpac , 3 ), jpi, jpj ) |
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| 363 | CALL tab_1d_2d( nbpac, qstoif , npac(1:nbpac), qstbif_1d (1:nbpac) , jpi, jpj ) |
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| 364 | CALL tab_1d_2d( nbpac, rdmicif , npac(1:nbpac), rdmicif_1d(1:nbpac) , jpi, jpj ) |
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| 365 | CALL tab_1d_2d( nbpac, fdvolif , npac(1:nbpac), dvlbq_1d (1:nbpac) , jpi, jpj ) |
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| 366 | |
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| 367 | |
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| 368 | ENDIF |
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| 369 | |
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| 370 | |
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| 371 | ! Recover frld values between 0 and 1 in the Southern Hemisphere (tricky trick) |
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| 372 | ! Update daily thermodynamic ice production. |
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| 373 | !------------------------------------------------------------------------------ |
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| 374 | |
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| 375 | DO jj = 1, jpj |
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| 376 | DO ji = 1, jpi |
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| 377 | frld (ji,jj) = MIN( frld(ji,jj), ABS( frld(ji,jj) - 2.0 ) ) |
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| 378 | hicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) ) - zhicifp(ji,jj) + hicifp(ji,jj) |
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| 379 | END DO |
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| 380 | END DO |
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| 381 | |
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| 382 | IF( l_ctl .AND. lwp ) THEN |
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| 383 | WRITE(numout,*) ' lim_thd end ' |
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| 384 | WRITE(numout,*) ' hicif ', SUM( hicif ), ' hsnif ', SUM( hsnif ) |
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| 385 | WRITE(numout,*) ' frld ', SUM( frld ), ' hicifp', SUM( hicifp ) |
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| 386 | WRITE(numout,*) ' phicif', SUM( phicif ), ' pfrld ', SUM( pfrld ) |
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| 387 | WRITE(numout,*) ' sist ', SUM( sist ), ' tbif 1', SUM( tbif (:,:,1) ) |
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| 388 | WRITE(numout,*) ' tbif 2', SUM( tbif(:,:,2) ), ' tbif 3', SUM( tbif (:,:,3) ) |
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| 389 | WRITE(numout,*) ' fdtcn ', SUM( fdtcn ), ' qdtcn ', SUM( qdtcn ) |
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| 390 | WRITE(numout,*) ' qstoif', SUM( qstoif ), ' fsbbq ', SUM( fsbbq ) |
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| 391 | ENDIF |
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| 392 | |
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| 393 | END SUBROUTINE lim_thd |
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| 394 | |
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| 395 | SUBROUTINE lim_thd_init |
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| 396 | !!------------------------------------------------------------------- |
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| 397 | !! *** ROUTINE lim_thd_init *** |
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| 398 | !! |
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| 399 | !! ** Purpose : Physical constants and parameters linked to the ice |
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| 400 | !! thermodynamics |
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| 401 | !! |
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| 402 | !! ** Method : Read the namicethd namelist and check the ice-thermo |
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| 403 | !! parameter values called at the first timestep (nit000) |
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| 404 | !! |
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| 405 | !! ** input : Namelist namicether |
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| 406 | !! |
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| 407 | !! history : |
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| 408 | !! 8.5 ! 03-08 (C. Ethe) original code |
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| 409 | !!------------------------------------------------------------------- |
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| 410 | NAMELIST/namicethd/ hmelt , hiccrit, hicmin, hiclim, amax , & |
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| 411 | & swiqst, sbeta , parlat, hakspl, hibspl, exld, & |
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| 412 | & hakdif, hnzst , thth , parsub, alphs |
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| 413 | !!------------------------------------------------------------------- |
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| 414 | |
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| 415 | |
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| 416 | ! Define the initial parameters |
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| 417 | ! ------------------------- |
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| 418 | REWIND( numnam_ice ) |
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| 419 | READ ( numnam_ice , namicethd ) |
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| 420 | IF (lwp) THEN |
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| 421 | WRITE(numout,*) |
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| 422 | WRITE(numout,*)'lim_thd_init : ice parameters for ice thermodynamic computation ' |
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| 423 | WRITE(numout,*)'~~~~~~~~~~~~' |
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| 424 | WRITE(numout,*)' maximum melting at the bottom hmelt = ', hmelt |
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| 425 | WRITE(numout,*)' ice thick. for lateral accretion in NH (SH) hiccrit(1/2) = ', hiccrit |
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| 426 | WRITE(numout,*)' ice thick. corr. to max. energy stored in brine pocket hicmin = ', hicmin |
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| 427 | WRITE(numout,*)' minimum ice thickness hiclim = ', hiclim |
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| 428 | WRITE(numout,*)' maximum lead fraction amax = ', amax |
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| 429 | WRITE(numout,*)' energy stored in brine pocket (=1) or not (=0) swiqst = ', swiqst |
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| 430 | WRITE(numout,*)' numerical carac. of the scheme for diffusion in ice ' |
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| 431 | WRITE(numout,*)' Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) sbeta = ', sbeta |
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| 432 | WRITE(numout,*)' percentage of energy used for lateral ablation parlat = ', parlat |
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| 433 | WRITE(numout,*)' slope of distr. for Hakkinen-Mellor lateral melting hakspl = ', hakspl |
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| 434 | WRITE(numout,*)' slope of distribution for Hibler lateral melting hibspl = ', hibspl |
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| 435 | WRITE(numout,*)' exponent for leads-closure rate exld = ', exld |
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| 436 | WRITE(numout,*)' coefficient for diffusions of ice and snow hakdif = ', hakdif |
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| 437 | WRITE(numout,*)' threshold thick. for comp. of eq. thermal conductivity zhth = ', thth |
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| 438 | WRITE(numout,*)' thickness of the surf. layer in temp. computation hnzst = ', hnzst |
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| 439 | WRITE(numout,*)' switch for snow sublimation (=1) or not (=0) parsub = ', parsub |
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| 440 | WRITE(numout,*)' coefficient for snow density when snow ice formation alphs = ', alphs |
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| 441 | ENDIF |
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| 442 | |
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| 443 | uscomi = 1.0 / ( 1.0 - amax ) ! inverse of minimum lead fraction |
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| 444 | rcdsn = hakdif * rcdsn |
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| 445 | rcdic = hakdif * rcdic |
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| 446 | |
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| 447 | IF ( ( hsndif > 100.0 ) .OR. ( hicdif > 100.0 ) ) THEN |
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| 448 | cnscg = 0.e0 |
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| 449 | ELSE |
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| 450 | cnscg = rcpsn / rcpic ! ratio rcpsn/rcpic |
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| 451 | ENDIF |
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| 452 | |
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| 453 | END SUBROUTINE lim_thd_init |
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| 454 | |
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| 455 | #else |
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| 456 | !!====================================================================== |
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| 457 | !! *** MODULE limthd *** |
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| 458 | !! No sea ice model |
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| 459 | !!====================================================================== |
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| 460 | CONTAINS |
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| 461 | SUBROUTINE lim_thd ! Empty routine |
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| 462 | END SUBROUTINE lim_thd |
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| 463 | #endif |
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| 464 | |
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| 465 | !!====================================================================== |
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| 466 | END MODULE limthd |
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