[8586] | 1 | MODULE icethd_zdf |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE icethd_zdf *** |
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[9604] | 4 | !! sea-ice: master routine for vertical heat diffusion in sea ice |
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[8586] | 5 | !!====================================================================== |
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[9604] | 6 | !! History : 4.0 ! 2018 (C. Rousset) Original code SI3 |
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[8586] | 7 | !!---------------------------------------------------------------------- |
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[9570] | 8 | #if defined key_si3 |
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[8586] | 9 | !!---------------------------------------------------------------------- |
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[9570] | 10 | !! 'key_si3' SI3 sea-ice model |
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[8586] | 11 | !!---------------------------------------------------------------------- |
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[8813] | 12 | !! ice_thd_zdf : select the appropriate routine for vertical heat diffusion calculation |
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[9604] | 13 | !! ice_thd_zdf_BL99 : heat diffusion from Bitz and Lipscomb 1999 |
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| 14 | !! ice_thd_zdf_init : initialization |
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[8813] | 15 | !!---------------------------------------------------------------------- |
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[8984] | 16 | USE dom_oce ! ocean space and time domain |
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| 17 | USE phycst ! physical constants (ocean directory) |
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| 18 | USE ice ! sea-ice: variables |
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| 19 | USE icethd_zdf_BL99 ! sea-ice: vertical diffusion (Bitz and Lipscomb, 1999) |
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[8586] | 20 | ! |
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[8984] | 21 | USE in_out_manager ! I/O manager |
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| 22 | USE lib_mpp ! MPP library |
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| 23 | USE lib_fortran ! fortran utilities (glob_sum + no signed zero) |
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[8586] | 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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| 28 | PUBLIC ice_thd_zdf ! called by icethd |
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| 29 | PUBLIC ice_thd_zdf_init ! called by icestp |
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| 30 | |
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[8984] | 31 | INTEGER :: nice_zdf ! Choice of the type of vertical heat diffusion formulation |
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| 32 | ! ! associated indices: |
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| 33 | INTEGER, PARAMETER :: np_BL99 = 1 ! Bitz and Lipscomb (1999) |
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| 34 | !! INTEGER, PARAMETER :: np_XXXX = 2 |
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| 35 | |
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[8586] | 36 | !!** namelist (namthd_zdf) ** |
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[8984] | 37 | LOGICAL :: ln_zdf_BL99 ! Heat diffusion follows Bitz and Lipscomb (1999) |
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[8586] | 38 | |
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| 39 | !!---------------------------------------------------------------------- |
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[9598] | 40 | !! NEMO/ICE 4.0 , NEMO Consortium (2018) |
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[9947] | 41 | !! $Id$ |
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[9598] | 42 | !! Software governed by the CeCILL licence (./LICENSE) |
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[8586] | 43 | !!---------------------------------------------------------------------- |
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| 44 | CONTAINS |
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| 45 | |
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| 46 | SUBROUTINE ice_thd_zdf |
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| 47 | !!------------------------------------------------------------------- |
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| 48 | !! *** ROUTINE ice_thd_zdf *** |
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| 49 | !! |
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[8813] | 50 | !! ** Purpose : select the appropriate routine for the computation |
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| 51 | !! of vertical diffusion |
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| 52 | !!------------------------------------------------------------------- |
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[9124] | 53 | ! |
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[8813] | 54 | SELECT CASE ( nice_zdf ) ! Choose the vertical heat diffusion solver |
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| 55 | ! |
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[8984] | 56 | ! !-------------! |
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| 57 | CASE( np_BL99 ) ! BL99 solver ! |
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| 58 | ! !-------------! |
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[8813] | 59 | SELECT CASE( nice_jules ) |
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[8984] | 60 | ! ! No Jules coupler ==> default option |
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| 61 | CASE( np_jules_OFF ) ; CALL ice_thd_zdf_BL99 ( np_jules_OFF ) |
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[8813] | 62 | ! |
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[8984] | 63 | ! ! Jules coupler is emulated => 1st call to get the needed fields (conduction...) |
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| 64 | ! 2nd call to use these fields to calculate heat diffusion |
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| 65 | CASE( np_jules_EMULE ) ; CALL ice_thd_zdf_BL99 ( np_jules_EMULE ) |
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| 66 | CALL ice_thd_zdf_BL99 ( np_jules_ACTIVE ) |
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[8813] | 67 | ! |
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[8984] | 68 | ! ! Jules coupler is active ==> Met Office default option |
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| 69 | CASE( np_jules_ACTIVE ) ; CALL ice_thd_zdf_BL99 ( np_jules_ACTIVE ) |
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[8813] | 70 | ! |
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[8586] | 71 | END SELECT |
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| 72 | ! |
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[8984] | 73 | END SELECT |
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[9124] | 74 | ! |
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[8984] | 75 | END SUBROUTINE ice_thd_zdf |
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[8813] | 76 | |
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[8984] | 77 | |
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[8586] | 78 | SUBROUTINE ice_thd_zdf_init |
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| 79 | !!----------------------------------------------------------------------- |
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| 80 | !! *** ROUTINE ice_thd_zdf_init *** |
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| 81 | !! |
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| 82 | !! ** Purpose : Physical constants and parameters associated with |
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| 83 | !! ice thermodynamics |
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| 84 | !! |
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| 85 | !! ** Method : Read the namthd_zdf namelist and check the parameters |
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| 86 | !! called at the first timestep (nit000) |
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| 87 | !! |
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| 88 | !! ** input : Namelist namthd_zdf |
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| 89 | !!------------------------------------------------------------------- |
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[8813] | 90 | INTEGER :: ios, ioptio ! Local integer |
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[8586] | 91 | !! |
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[8813] | 92 | NAMELIST/namthd_zdf/ ln_zdf_BL99, ln_cndi_U64, ln_cndi_P07, rn_cnd_s, rn_kappa_i |
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[8586] | 93 | !!------------------------------------------------------------------- |
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| 94 | ! |
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| 95 | REWIND( numnam_ice_ref ) ! Namelist namthd_zdf in reference namelist : Ice thermodynamics |
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| 96 | READ ( numnam_ice_ref, namthd_zdf, IOSTAT = ios, ERR = 901) |
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[9169] | 97 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namthd_zdf in reference namelist', lwp ) |
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[8586] | 98 | REWIND( numnam_ice_cfg ) ! Namelist namthd_zdf in configuration namelist : Ice thermodynamics |
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| 99 | READ ( numnam_ice_cfg, namthd_zdf, IOSTAT = ios, ERR = 902 ) |
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[9169] | 100 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namthd_zdf in configuration namelist', lwp ) |
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| 101 | IF(lwm) WRITE( numoni, namthd_zdf ) |
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[8586] | 102 | ! |
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| 103 | IF(lwp) THEN ! control print |
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[9169] | 104 | WRITE(numout,*) |
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[8586] | 105 | WRITE(numout,*) 'ice_thd_zdf_init: Ice vertical heat diffusion' |
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| 106 | WRITE(numout,*) '~~~~~~~~~~~~~~~~' |
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| 107 | WRITE(numout,*) ' Namelist namthd_zdf:' |
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[8813] | 108 | WRITE(numout,*) ' Bitz and Lipscomb (1999) formulation ln_zdf_BL99 = ', ln_zdf_BL99 |
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[8586] | 109 | WRITE(numout,*) ' thermal conductivity in the ice (Untersteiner 1964) ln_cndi_U64 = ', ln_cndi_U64 |
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| 110 | WRITE(numout,*) ' thermal conductivity in the ice (Pringle et al 2007) ln_cndi_P07 = ', ln_cndi_P07 |
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| 111 | WRITE(numout,*) ' thermal conductivity in the snow rn_cnd_s = ', rn_cnd_s |
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| 112 | WRITE(numout,*) ' extinction radiation parameter in sea ice rn_kappa_i = ', rn_kappa_i |
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[8984] | 113 | ENDIF |
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[8586] | 114 | ! |
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[9119] | 115 | IF ( ( ln_cndi_U64 .AND. ln_cndi_P07 ) .OR. ( .NOT. ln_cndi_U64 .AND. .NOT. ln_cndi_P07 ) ) THEN |
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| 116 | CALL ctl_stop( 'ice_thd_zdf_init: choose 1 and only 1 formulation for thermal conduction (ln_cndi_U64 or ln_cndi_P07)' ) |
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[8586] | 117 | ENDIF |
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[8813] | 118 | ! !== set the choice of ice vertical thermodynamic formulation ==! |
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| 119 | ioptio = 0 |
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[8984] | 120 | IF( ln_zdf_BL99 ) THEN ; ioptio = ioptio + 1 ; nice_zdf = np_BL99 ; ENDIF ! BL99 thermodynamics (linear liquidus + constant thermal properties) |
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| 121 | !! IF( ln_zdf_XXXX ) THEN ; ioptio = ioptio + 1 ; nice_zdf = np_XXXX ; ENDIF |
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| 122 | IF( ioptio /= 1 ) CALL ctl_stop( 'ice_thd_init: one and only one ice thermo option has to be defined ' ) |
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[8586] | 123 | ! |
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| 124 | END SUBROUTINE ice_thd_zdf_init |
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| 125 | |
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| 126 | #else |
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| 127 | !!---------------------------------------------------------------------- |
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[9570] | 128 | !! Default option Dummy Module No SI3 sea-ice model |
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[8586] | 129 | !!---------------------------------------------------------------------- |
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| 130 | #endif |
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| 131 | |
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| 132 | !!====================================================================== |
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| 133 | END MODULE icethd_zdf |
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