[821] | 1 | MODULE limistate_2 |
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[3] | 2 | !!====================================================================== |
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[821] | 3 | !! *** MODULE limistate_2 *** |
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[3] | 4 | !! Initialisation of diagnostics ice variables |
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| 5 | !!====================================================================== |
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[888] | 6 | !! History : 1.0 ! 01-04 (C. Ethe, G. Madec) Original code |
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| 7 | !! 2.0 ! 03-08 (G. Madec) add lim_istate_init |
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[508] | 8 | !! ! 04-04 (S. Theetten) initialization from a file |
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| 9 | !! ! 06-07 (S. Masson) IOM to read the restart |
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[888] | 10 | !! ! 07-10 (G. Madec) surface module |
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[508] | 11 | !!-------------------------------------------------------------------- |
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[821] | 12 | #if defined key_lim2 |
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[3] | 13 | !!---------------------------------------------------------------------- |
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[821] | 14 | !! 'key_lim2' : LIM 2.0 sea-ice model |
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[3] | 15 | !!---------------------------------------------------------------------- |
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[508] | 16 | !!---------------------------------------------------------------------- |
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[821] | 17 | !! lim_istate_2 : Initialisation of diagnostics ice variables |
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| 18 | !! lim_istate_init_2 : initialization of ice state and namelist read |
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[3] | 19 | !!---------------------------------------------------------------------- |
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| 20 | USE phycst |
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[821] | 21 | USE par_ice_2 ! ice parameters |
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| 22 | USE dom_ice_2 |
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[1037] | 23 | USE eosbn2 ! equation of state |
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[508] | 24 | USE lbclnk |
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[888] | 25 | USE oce |
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[821] | 26 | USE ice_2 |
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[508] | 27 | USE iom |
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| 28 | USE in_out_manager |
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[3625] | 29 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[3] | 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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[821] | 34 | PUBLIC lim_istate_2 ! routine called by lim_init_2.F90 |
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[3] | 35 | |
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[4147] | 36 | !!! ** namelist (namiceini) ** |
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| 37 | LOGICAL :: ln_limini !: Ice initialization state |
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| 38 | REAL(wp) :: ttest ! threshold water temperature for initial sea ice |
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| 39 | REAL(wp) :: hninn ! initial snow thickness in the north |
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| 40 | REAL(wp) :: hginn ! initial ice thickness in the north |
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| 41 | REAL(wp) :: alinn ! initial leads area in the north |
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| 42 | REAL(wp) :: hnins ! initial snow thickness in the south |
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| 43 | REAL(wp) :: hgins ! initial ice thickness in the south |
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| 44 | REAL(wp) :: alins ! initial leads area in the south |
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[1228] | 45 | |
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| 46 | REAL(wp) :: zero = 0.e0 ! constant value = 0 |
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| 47 | REAL(wp) :: zone = 1.e0 ! constant value = 1 |
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[3] | 48 | !!---------------------------------------------------------------------- |
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[2528] | 49 | !! NEMO/LIM2 3.3 , UCL - NEMO Consortium (2010) |
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[1156] | 50 | !! $Id$ |
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[2528] | 51 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 52 | !!---------------------------------------------------------------------- |
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| 53 | |
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| 54 | CONTAINS |
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| 55 | |
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[821] | 56 | SUBROUTINE lim_istate_2 |
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[3] | 57 | !!------------------------------------------------------------------- |
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[821] | 58 | !! *** ROUTINE lim_istate_2 *** |
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[3] | 59 | !! |
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[77] | 60 | !! ** Purpose : defined the sea-ice initial state |
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| 61 | !! |
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| 62 | !! ** Method : restart from a state defined in a binary file |
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| 63 | !! or from arbitrary sea-ice conditions |
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[3] | 64 | !!-------------------------------------------------------------------- |
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[508] | 65 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[1045] | 66 | REAL(wp) :: zidto ! temporary scalar |
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[3] | 67 | !-------------------------------------------------------------------- |
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[888] | 68 | |
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| 69 | CALL lim_istate_init_2 ! reading the initials parameters of the ice |
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[3] | 70 | |
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[888] | 71 | IF( .NOT. ln_limini ) THEN |
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[419] | 72 | |
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[3294] | 73 | tfu(:,:) = tfreez( tsn(:,:,1,jp_sal) ) * tmask(:,:,1) ! freezing/melting point of sea water [Celcius] |
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[1037] | 74 | |
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[419] | 75 | DO jj = 1, jpj |
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| 76 | DO ji = 1, jpi |
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[1037] | 77 | ! ! ice if sst <= t-freez + ttest |
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[3294] | 78 | IF( tsn(ji,jj,1,jp_tem) - tfu(ji,jj) >= ttest ) THEN ; zidto = 0.e0 ! no ice |
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| 79 | ELSE ; zidto = 1.e0 ! ice |
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[1037] | 80 | ENDIF |
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| 81 | ! |
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[419] | 82 | IF( fcor(ji,jj) >= 0.e0 ) THEN !-- Northern hemisphere. |
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| 83 | hicif(ji,jj) = zidto * hginn |
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| 84 | frld(ji,jj) = zidto * alinn + ( 1.0 - zidto ) * 1.0 |
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| 85 | hsnif(ji,jj) = zidto * hninn |
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| 86 | ELSE !--- Southern hemisphere. |
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| 87 | hicif(ji,jj) = zidto * hgins |
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| 88 | frld(ji,jj) = zidto * alins + ( 1.0 - zidto ) * 1.0 |
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| 89 | hsnif(ji,jj) = zidto * hnins |
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| 90 | ENDIF |
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| 91 | END DO |
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| 92 | END DO |
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[1037] | 93 | |
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| 94 | tfu(:,:) = tfu(:,:) + rt0 ! ftu converted from Celsius to Kelvin (rt0 over land) |
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[419] | 95 | |
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| 96 | sist (:,:) = tfu(:,:) |
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| 97 | tbif (:,:,1) = tfu(:,:) |
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| 98 | tbif (:,:,2) = tfu(:,:) |
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| 99 | tbif (:,:,3) = tfu(:,:) |
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[888] | 100 | |
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[419] | 101 | ENDIF |
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[888] | 102 | |
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[3] | 103 | fsbbq (:,:) = 0.e0 |
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| 104 | qstoif(:,:) = 0.e0 |
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[1470] | 105 | u_ice (:,:) = 0.e0 |
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| 106 | v_ice (:,:) = 0.e0 |
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[3] | 107 | |
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[77] | 108 | !--- Moments for advection. |
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[3] | 109 | |
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[77] | 110 | sxice (:,:) = 0.e0 ; sxsn (:,:) = 0.e0 ; sxa (:,:) = 0.e0 |
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| 111 | syice (:,:) = 0.e0 ; sysn (:,:) = 0.e0 ; sya (:,:) = 0.e0 |
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| 112 | sxxice(:,:) = 0.e0 ; sxxsn(:,:) = 0.e0 ; sxxa (:,:) = 0.e0 |
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| 113 | syyice(:,:) = 0.e0 ; syysn(:,:) = 0.e0 ; syya (:,:) = 0.e0 |
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| 114 | sxyice(:,:) = 0.e0 ; sxysn(:,:) = 0.e0 ; sxya (:,:) = 0.e0 |
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[3] | 115 | |
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[77] | 116 | sxc0 (:,:) = 0.e0 ; sxc1 (:,:) = 0.e0 ; sxc2 (:,:) = 0.e0 |
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| 117 | syc0 (:,:) = 0.e0 ; syc1 (:,:) = 0.e0 ; syc2 (:,:) = 0.e0 |
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| 118 | sxxc0 (:,:) = 0.e0 ; sxxc1(:,:) = 0.e0 ; sxxc2(:,:) = 0.e0 |
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| 119 | syyc0 (:,:) = 0.e0 ; syyc1(:,:) = 0.e0 ; syyc2(:,:) = 0.e0 |
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| 120 | sxyc0 (:,:) = 0.e0 ; sxyc1(:,:) = 0.e0 ; sxyc2(:,:) = 0.e0 |
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[3] | 121 | |
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[77] | 122 | sxst (:,:) = 0.e0 |
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| 123 | syst (:,:) = 0.e0 |
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| 124 | sxxst (:,:) = 0.e0 |
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| 125 | syyst (:,:) = 0.e0 |
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| 126 | sxyst (:,:) = 0.e0 |
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[2855] | 127 | #if ! defined key_lim2_vp |
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| 128 | stress1_i (:,:) = 0._wp ! EVP rheology |
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| 129 | stress2_i (:,:) = 0._wp |
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| 130 | stress12_i(:,:) = 0._wp |
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| 131 | #endif |
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[3] | 132 | |
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[77] | 133 | !-- lateral boundary conditions |
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| 134 | CALL lbc_lnk( hicif, 'T', 1. ) |
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| 135 | CALL lbc_lnk( frld , 'T', 1. ) |
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[299] | 136 | |
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| 137 | ! C A U T I O N frld = 1 over land and lbc_lnk put zero along |
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| 138 | ! ************* closed boundaries herefore we force to one over land |
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| 139 | frld(:,:) = tms(:,:) * frld(:,:) + ( 1. - tms(:,:) ) |
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| 140 | |
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[77] | 141 | CALL lbc_lnk( hsnif, 'T', 1. ) |
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[888] | 142 | CALL lbc_lnk( sist , 'T', 1. , pval = rt0 ) ! set rt0 on closed boundary (required by bulk formulation) |
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[77] | 143 | DO jk = 1, jplayersp1 |
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| 144 | CALL lbc_lnk(tbif(:,:,jk), 'T', 1. ) |
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| 145 | END DO |
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| 146 | CALL lbc_lnk( fsbbq , 'T', 1. ) |
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| 147 | CALL lbc_lnk( qstoif , 'T', 1. ) |
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[888] | 148 | |
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[821] | 149 | END SUBROUTINE lim_istate_2 |
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[3] | 150 | |
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| 151 | |
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[821] | 152 | SUBROUTINE lim_istate_init_2 |
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[3] | 153 | !!------------------------------------------------------------------- |
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[821] | 154 | !! *** ROUTINE lim_istate_init_2 *** |
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[3] | 155 | !! |
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[77] | 156 | !! ** Purpose : Definition of initial state of the ice |
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[3] | 157 | !! |
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[77] | 158 | !! ** Method : Read the namiceini namelist and check the parameter |
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[888] | 159 | !! values called at the first timestep (nit000) |
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[3] | 160 | !! |
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[77] | 161 | !! ** input : Namelist namiceini |
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[3] | 162 | !!------------------------------------------------------------------- |
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[508] | 163 | INTEGER :: inum_ice |
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[673] | 164 | INTEGER :: ji,jj |
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[4147] | 165 | INTEGER :: ios ! Local integer output status for namelist read |
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[419] | 166 | |
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[675] | 167 | NAMELIST/namiceini/ ln_limini, ttest, hninn, hginn, alinn, & |
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[419] | 168 | & hnins, hgins, alins |
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[3] | 169 | !!------------------------------------------------------------------- |
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[4147] | 170 | |
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| 171 | REWIND( numnam_ice_ref ) ! Namelist namiceini in reference namelist : Ice initial state |
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| 172 | READ ( numnam_ice_ref, namiceini, IOSTAT = ios, ERR = 901) |
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| 173 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in reference namelist', lwp ) |
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| 174 | |
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| 175 | REWIND( numnam_ice_cfg ) ! Namelist namiceini in configuration namelist : Ice initial state |
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| 176 | READ ( numnam_ice_cfg, namiceini, IOSTAT = ios, ERR = 902 ) |
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| 177 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in configuration namelist', lwp ) |
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| 178 | WRITE ( numoni, namiceini ) |
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[888] | 179 | ! |
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| 180 | IF(lwp) THEN |
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| 181 | WRITE(numout,*) |
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| 182 | WRITE(numout,*) 'lim_istate_init_2 : ice parameters inititialisation ' |
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| 183 | WRITE(numout,*) '~~~~~~~~~~~~~~~~~' |
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| 184 | WRITE(numout,*) ' threshold water temp. for initial sea-ice ttest = ', ttest |
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| 185 | WRITE(numout,*) ' initial snow thickness in the north hninn = ', hninn |
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| 186 | WRITE(numout,*) ' initial ice thickness in the north hginn = ', hginn |
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| 187 | WRITE(numout,*) ' initial leads area in the north alinn = ', alinn |
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| 188 | WRITE(numout,*) ' initial snow thickness in the south hnins = ', hnins |
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| 189 | WRITE(numout,*) ' initial ice thickness in the south hgins = ', hgins |
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| 190 | WRITE(numout,*) ' initial leads area in the south alins = ', alins |
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| 191 | WRITE(numout,*) ' Ice state initialization using input file ln_limini = ', ln_limini |
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[3] | 192 | ENDIF |
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[419] | 193 | |
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| 194 | IF( ln_limini ) THEN ! Ice initialization using input file |
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[888] | 195 | ! |
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[508] | 196 | CALL iom_open( 'Ice_initialization.nc', inum_ice ) |
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[888] | 197 | ! |
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[508] | 198 | IF( inum_ice > 0 ) THEN |
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[888] | 199 | IF(lwp) WRITE(numout,*) |
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| 200 | IF(lwp) WRITE(numout,*) ' ice state initialization with : Ice_initialization.nc' |
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[3] | 201 | |
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[888] | 202 | CALL iom_get( inum_ice, jpdom_data, 'hicif', hicif ) |
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| 203 | CALL iom_get( inum_ice, jpdom_data, 'hsnif', hsnif ) |
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| 204 | CALL iom_get( inum_ice, jpdom_data, 'frld' , frld ) |
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| 205 | CALL iom_get( inum_ice, jpdom_data, 'ts' , sist ) |
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[673] | 206 | CALL iom_get( inum_ice, jpdom_unknown, 'tbif', tbif(1:nlci,1:nlcj,:), & |
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[508] | 207 | & kstart = (/ mig(1),mjg(1),1 /), kcount = (/ nlci,nlcj,jplayersp1 /) ) |
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[673] | 208 | ! put some values in the extra-halo... |
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| 209 | DO jj = nlcj+1, jpj ; tbif(1:nlci,jj,:) = tbif(1:nlci,nlej,:) ; END DO |
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| 210 | DO ji = nlci+1, jpi ; tbif(ji ,: ,:) = tbif(nlei ,: ,:) ; END DO |
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[508] | 211 | |
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| 212 | CALL iom_close( inum_ice) |
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[888] | 213 | ! |
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[419] | 214 | ENDIF |
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| 215 | ENDIF |
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[888] | 216 | ! |
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[821] | 217 | END SUBROUTINE lim_istate_init_2 |
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[3] | 218 | |
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| 219 | #else |
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| 220 | !!---------------------------------------------------------------------- |
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[821] | 221 | !! Default option : Empty module NO LIM 2.0 sea-ice model |
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[3] | 222 | !!---------------------------------------------------------------------- |
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| 223 | CONTAINS |
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[821] | 224 | SUBROUTINE lim_istate_2 ! Empty routine |
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| 225 | END SUBROUTINE lim_istate_2 |
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[3] | 226 | #endif |
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| 227 | |
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| 228 | !!====================================================================== |
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[821] | 229 | END MODULE limistate_2 |
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