[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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[821] | 16 | !! lim_istate_2 : Initialisation of diagnostics ice variables |
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| 17 | !! lim_istate_init_2 : initialization of ice state and namelist read |
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[3] | 18 | !!---------------------------------------------------------------------- |
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| 19 | USE phycst |
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[821] | 20 | USE par_ice_2 ! ice parameters |
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| 21 | USE dom_ice_2 |
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[1037] | 22 | USE eosbn2 ! equation of state |
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[508] | 23 | USE lbclnk |
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[888] | 24 | USE oce |
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[821] | 25 | USE ice_2 |
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[508] | 26 | USE iom |
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| 27 | USE in_out_manager |
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[3625] | 28 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[3] | 29 | |
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| 30 | IMPLICIT NONE |
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| 31 | PRIVATE |
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| 32 | |
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[821] | 33 | PUBLIC lim_istate_2 ! routine called by lim_init_2.F90 |
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[3] | 34 | |
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[4990] | 35 | ! !! ** namelist (namiceini) ** |
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| 36 | LOGICAL :: ln_limini ! Ice initialization state |
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[4147] | 37 | REAL(wp) :: ttest ! threshold water temperature for initial sea ice |
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| 38 | REAL(wp) :: hninn ! initial snow thickness in the north |
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| 39 | REAL(wp) :: hginn ! initial ice thickness in the north |
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| 40 | REAL(wp) :: alinn ! initial leads area in the north |
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| 41 | REAL(wp) :: hnins ! initial snow thickness in the south |
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| 42 | REAL(wp) :: hgins ! initial ice thickness in the south |
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| 43 | REAL(wp) :: alins ! initial leads area in the south |
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[1228] | 44 | |
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| 45 | REAL(wp) :: zero = 0.e0 ! constant value = 0 |
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| 46 | REAL(wp) :: zone = 1.e0 ! constant value = 1 |
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[3] | 47 | !!---------------------------------------------------------------------- |
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[2528] | 48 | !! NEMO/LIM2 3.3 , UCL - NEMO Consortium (2010) |
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[1156] | 49 | !! $Id$ |
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[2528] | 50 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 51 | !!---------------------------------------------------------------------- |
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| 52 | CONTAINS |
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| 53 | |
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[821] | 54 | SUBROUTINE lim_istate_2 |
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[3] | 55 | !!------------------------------------------------------------------- |
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[821] | 56 | !! *** ROUTINE lim_istate_2 *** |
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[3] | 57 | !! |
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[77] | 58 | !! ** Purpose : defined the sea-ice initial state |
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| 59 | !! |
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| 60 | !! ** Method : restart from a state defined in a binary file |
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| 61 | !! or from arbitrary sea-ice conditions |
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[3] | 62 | !!-------------------------------------------------------------------- |
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[508] | 63 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[1045] | 64 | REAL(wp) :: zidto ! temporary scalar |
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[3] | 65 | !-------------------------------------------------------------------- |
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[888] | 66 | |
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| 67 | CALL lim_istate_init_2 ! reading the initials parameters of the ice |
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[3] | 68 | |
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[888] | 69 | IF( .NOT. ln_limini ) THEN |
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[419] | 70 | |
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[5540] | 71 | CALL eos_fzp( tsn(:,:,1,jp_sal), tfu(:,:) ) ! freezing/melting point of sea water [Celcius] |
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| 72 | tfu(:,:) = tfu(:,:) * tmask(:,:,1) |
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[1037] | 73 | |
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[419] | 74 | DO jj = 1, jpj |
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| 75 | DO ji = 1, jpi |
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[1037] | 76 | ! ! ice if sst <= t-freez + ttest |
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[3294] | 77 | IF( tsn(ji,jj,1,jp_tem) - tfu(ji,jj) >= ttest ) THEN ; zidto = 0.e0 ! no ice |
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| 78 | ELSE ; zidto = 1.e0 ! ice |
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[1037] | 79 | ENDIF |
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| 80 | ! |
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[419] | 81 | IF( fcor(ji,jj) >= 0.e0 ) THEN !-- Northern hemisphere. |
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| 82 | hicif(ji,jj) = zidto * hginn |
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| 83 | frld(ji,jj) = zidto * alinn + ( 1.0 - zidto ) * 1.0 |
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| 84 | hsnif(ji,jj) = zidto * hninn |
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| 85 | ELSE !--- Southern hemisphere. |
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| 86 | hicif(ji,jj) = zidto * hgins |
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| 87 | frld(ji,jj) = zidto * alins + ( 1.0 - zidto ) * 1.0 |
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| 88 | hsnif(ji,jj) = zidto * hnins |
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| 89 | ENDIF |
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| 90 | END DO |
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| 91 | END DO |
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[1037] | 92 | |
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| 93 | tfu(:,:) = tfu(:,:) + rt0 ! ftu converted from Celsius to Kelvin (rt0 over land) |
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[419] | 94 | |
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| 95 | sist (:,:) = tfu(:,:) |
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| 96 | tbif (:,:,1) = tfu(:,:) |
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| 97 | tbif (:,:,2) = tfu(:,:) |
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| 98 | tbif (:,:,3) = tfu(:,:) |
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[888] | 99 | |
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[419] | 100 | ENDIF |
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[888] | 101 | |
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[3] | 102 | fsbbq (:,:) = 0.e0 |
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| 103 | qstoif(:,:) = 0.e0 |
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[1470] | 104 | u_ice (:,:) = 0.e0 |
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| 105 | v_ice (:,:) = 0.e0 |
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[3] | 106 | |
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[77] | 107 | !--- Moments for advection. |
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[3] | 108 | |
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[77] | 109 | sxice (:,:) = 0.e0 ; sxsn (:,:) = 0.e0 ; sxa (:,:) = 0.e0 |
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| 110 | syice (:,:) = 0.e0 ; sysn (:,:) = 0.e0 ; sya (:,:) = 0.e0 |
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| 111 | sxxice(:,:) = 0.e0 ; sxxsn(:,:) = 0.e0 ; sxxa (:,:) = 0.e0 |
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| 112 | syyice(:,:) = 0.e0 ; syysn(:,:) = 0.e0 ; syya (:,:) = 0.e0 |
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| 113 | sxyice(:,:) = 0.e0 ; sxysn(:,:) = 0.e0 ; sxya (:,:) = 0.e0 |
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[3] | 114 | |
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[77] | 115 | sxc0 (:,:) = 0.e0 ; sxc1 (:,:) = 0.e0 ; sxc2 (:,:) = 0.e0 |
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| 116 | syc0 (:,:) = 0.e0 ; syc1 (:,:) = 0.e0 ; syc2 (:,:) = 0.e0 |
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| 117 | sxxc0 (:,:) = 0.e0 ; sxxc1(:,:) = 0.e0 ; sxxc2(:,:) = 0.e0 |
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| 118 | syyc0 (:,:) = 0.e0 ; syyc1(:,:) = 0.e0 ; syyc2(:,:) = 0.e0 |
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| 119 | sxyc0 (:,:) = 0.e0 ; sxyc1(:,:) = 0.e0 ; sxyc2(:,:) = 0.e0 |
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[3] | 120 | |
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[77] | 121 | sxst (:,:) = 0.e0 |
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| 122 | syst (:,:) = 0.e0 |
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| 123 | sxxst (:,:) = 0.e0 |
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| 124 | syyst (:,:) = 0.e0 |
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| 125 | sxyst (:,:) = 0.e0 |
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[2855] | 126 | #if ! defined key_lim2_vp |
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| 127 | stress1_i (:,:) = 0._wp ! EVP rheology |
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| 128 | stress2_i (:,:) = 0._wp |
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| 129 | stress12_i(:,:) = 0._wp |
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| 130 | #endif |
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[3] | 131 | |
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[77] | 132 | !-- lateral boundary conditions |
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| 133 | CALL lbc_lnk( hicif, 'T', 1. ) |
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| 134 | CALL lbc_lnk( frld , 'T', 1. ) |
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[299] | 135 | |
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| 136 | ! C A U T I O N frld = 1 over land and lbc_lnk put zero along |
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| 137 | ! ************* closed boundaries herefore we force to one over land |
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| 138 | frld(:,:) = tms(:,:) * frld(:,:) + ( 1. - tms(:,:) ) |
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| 139 | |
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[77] | 140 | CALL lbc_lnk( hsnif, 'T', 1. ) |
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[888] | 141 | CALL lbc_lnk( sist , 'T', 1. , pval = rt0 ) ! set rt0 on closed boundary (required by bulk formulation) |
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[77] | 142 | DO jk = 1, jplayersp1 |
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| 143 | CALL lbc_lnk(tbif(:,:,jk), 'T', 1. ) |
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| 144 | END DO |
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| 145 | CALL lbc_lnk( fsbbq , 'T', 1. ) |
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| 146 | CALL lbc_lnk( qstoif , 'T', 1. ) |
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[888] | 147 | |
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[821] | 148 | END SUBROUTINE lim_istate_2 |
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[3] | 149 | |
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| 150 | |
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[821] | 151 | SUBROUTINE lim_istate_init_2 |
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[3] | 152 | !!------------------------------------------------------------------- |
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[821] | 153 | !! *** ROUTINE lim_istate_init_2 *** |
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[3] | 154 | !! |
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[77] | 155 | !! ** Purpose : Definition of initial state of the ice |
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[3] | 156 | !! |
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[77] | 157 | !! ** Method : Read the namiceini namelist and check the parameter |
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[888] | 158 | !! values called at the first timestep (nit000) |
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[3] | 159 | !! |
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[77] | 160 | !! ** input : Namelist namiceini |
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[3] | 161 | !!------------------------------------------------------------------- |
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[508] | 162 | INTEGER :: inum_ice |
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[673] | 163 | INTEGER :: ji,jj |
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[4147] | 164 | INTEGER :: ios ! Local integer output status for namelist read |
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[419] | 165 | |
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[675] | 166 | NAMELIST/namiceini/ ln_limini, ttest, hninn, hginn, alinn, & |
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[419] | 167 | & hnins, hgins, alins |
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[3] | 168 | !!------------------------------------------------------------------- |
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[4147] | 169 | |
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| 170 | REWIND( numnam_ice_ref ) ! Namelist namiceini in reference namelist : Ice initial state |
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| 171 | READ ( numnam_ice_ref, namiceini, IOSTAT = ios, ERR = 901) |
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| 172 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in reference namelist', lwp ) |
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| 173 | |
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| 174 | REWIND( numnam_ice_cfg ) ! Namelist namiceini in configuration namelist : Ice initial state |
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| 175 | READ ( numnam_ice_cfg, namiceini, IOSTAT = ios, ERR = 902 ) |
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| 176 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in configuration namelist', lwp ) |
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[4624] | 177 | IF(lwm) WRITE ( numoni, namiceini ) |
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[888] | 178 | ! |
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| 179 | IF(lwp) THEN |
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| 180 | WRITE(numout,*) |
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| 181 | WRITE(numout,*) 'lim_istate_init_2 : ice parameters inititialisation ' |
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| 182 | WRITE(numout,*) '~~~~~~~~~~~~~~~~~' |
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| 183 | WRITE(numout,*) ' threshold water temp. for initial sea-ice ttest = ', ttest |
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| 184 | WRITE(numout,*) ' initial snow thickness in the north hninn = ', hninn |
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| 185 | WRITE(numout,*) ' initial ice thickness in the north hginn = ', hginn |
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| 186 | WRITE(numout,*) ' initial leads area in the north alinn = ', alinn |
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| 187 | WRITE(numout,*) ' initial snow thickness in the south hnins = ', hnins |
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| 188 | WRITE(numout,*) ' initial ice thickness in the south hgins = ', hgins |
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| 189 | WRITE(numout,*) ' initial leads area in the south alins = ', alins |
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| 190 | WRITE(numout,*) ' Ice state initialization using input file ln_limini = ', ln_limini |
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[3] | 191 | ENDIF |
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[419] | 192 | |
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| 193 | IF( ln_limini ) THEN ! Ice initialization using input file |
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[888] | 194 | ! |
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[508] | 195 | CALL iom_open( 'Ice_initialization.nc', inum_ice ) |
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[888] | 196 | ! |
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[508] | 197 | IF( inum_ice > 0 ) THEN |
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[888] | 198 | IF(lwp) WRITE(numout,*) |
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| 199 | IF(lwp) WRITE(numout,*) ' ice state initialization with : Ice_initialization.nc' |
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[3] | 200 | |
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[888] | 201 | CALL iom_get( inum_ice, jpdom_data, 'hicif', hicif ) |
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| 202 | CALL iom_get( inum_ice, jpdom_data, 'hsnif', hsnif ) |
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| 203 | CALL iom_get( inum_ice, jpdom_data, 'frld' , frld ) |
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| 204 | CALL iom_get( inum_ice, jpdom_data, 'ts' , sist ) |
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[673] | 205 | CALL iom_get( inum_ice, jpdom_unknown, 'tbif', tbif(1:nlci,1:nlcj,:), & |
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[508] | 206 | & kstart = (/ mig(1),mjg(1),1 /), kcount = (/ nlci,nlcj,jplayersp1 /) ) |
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[673] | 207 | ! put some values in the extra-halo... |
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| 208 | DO jj = nlcj+1, jpj ; tbif(1:nlci,jj,:) = tbif(1:nlci,nlej,:) ; END DO |
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| 209 | DO ji = nlci+1, jpi ; tbif(ji ,: ,:) = tbif(nlei ,: ,:) ; END DO |
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[508] | 210 | |
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| 211 | CALL iom_close( inum_ice) |
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[888] | 212 | ! |
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[419] | 213 | ENDIF |
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| 214 | ENDIF |
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[888] | 215 | ! |
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[821] | 216 | END SUBROUTINE lim_istate_init_2 |
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[3] | 217 | |
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| 218 | #else |
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| 219 | !!---------------------------------------------------------------------- |
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[821] | 220 | !! Default option : Empty module NO LIM 2.0 sea-ice model |
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[3] | 221 | !!---------------------------------------------------------------------- |
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| 222 | CONTAINS |
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[821] | 223 | SUBROUTINE lim_istate_2 ! Empty routine |
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| 224 | END SUBROUTINE lim_istate_2 |
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[3] | 225 | #endif |
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| 226 | |
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| 227 | !!====================================================================== |
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[821] | 228 | END MODULE limistate_2 |
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