[4] | 1 | !> \file precribe-H_mod.f90 |
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| 2 | !! |
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| 3 | !! Determine mask and thickness for prescription of H |
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| 4 | !! |
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| 5 | !< |
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| 6 | |
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| 7 | !> \namespace prescribe_H |
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| 8 | !! |
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| 9 | !! Determine mask and thickness for prescription of H |
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| 10 | !! |
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| 11 | !! \author CatRitz |
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| 12 | !! \date june 2009 |
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| 13 | !! |
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| 14 | !! @note use module3D_phy |
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| 15 | !! @note use param_phy_mod |
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| 16 | !< |
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| 17 | |
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| 18 | module prescribe_H |
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| 19 | |
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| 20 | use module3D_phy |
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| 21 | use param_phy_mod |
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| 22 | use interface_input |
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| 23 | implicit none |
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| 24 | |
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| 25 | ! ces dimensionnements sont maintenant dans 3D |
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| 26 | |
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| 27 | ! real,dimension(nx,ny) :: Hp !< H value if prescribed |
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| 28 | ! real,dimension(nx,ny) :: Hp0 !< H value if prescribed (reference value) |
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| 29 | ! real,dimension(nx,ny) :: Delta_H !< Delta_H value if prescribed |
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| 30 | ! integer,dimension(nx,ny) :: i_delta_H !< 1 if Delta_H is prescribed on this node, else 0 |
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| 31 | ! integer,dimension(nx,ny) :: i_Hp !< 1 if H is prescribed on this node, else 0 |
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| 32 | ! integer,dimension(nx,ny) :: i_Hp0 !< i_hp mask reference value does not change with time |
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| 33 | ! integer,dimension(nx,ny) :: MK_gl0 !< mask grounding line initial |
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| 34 | ! integer,dimension(nx,ny) :: MK_flot0 !< mask float initial |
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| 35 | |
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| 36 | ! pour grounding line retrea, ice2sea |
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| 37 | integer,dimension(nx,ny) :: i_status !< 0 pas prescrit, 1 prescrit retrait, 2 prescrit shelf |
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| 38 | real :: time_onset ! moment ou la grounding line commence a reculer |
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| 39 | |
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| 40 | ! for prescribed grounding line retreat : ancienne version |
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| 41 | integer :: voisin !< work variable |
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| 42 | real (kind=kind(0.d0)) :: t_break !< temps : en double precision |
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| 43 | |
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| 44 | integer,parameter :: iretreat_max = 20 !< maximum number of retreat steps |
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| 45 | integer :: iretreat |
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| 46 | real (kind=kind(0.d0)),dimension(iretreat_max) :: time_gl !< time of the retreat steps |
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| 47 | integer, dimension(nx,ny) :: tag_gl !< tag of all the retreat points |
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| 48 | |
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| 49 | !< floating -> 10000 |
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| 50 | !< grounded not gl -> 1000 |
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| 51 | |
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| 52 | integer :: floating_tag = -10000 |
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| 53 | integer :: grounded_tag = 1000 |
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| 54 | |
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| 55 | |
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| 56 | integer, dimension(nx,ny) :: upwind_gl !< 1 if gl can still retreat, else 0 |
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| 57 | real, dimension(nx,ny) :: H_gl !< flotation thickness at the time |
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| 58 | real, dimension(nx,ny) :: dH_gl_dt !< to smoothly decrease ice thickness |
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| 59 | !< for next gl points |
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| 60 | |
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| 61 | ! nouvelle version recul grounding line pour ice2sea |
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| 62 | ! ------------------------------------------------------ |
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| 63 | |
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| 64 | ! real, dimension(nx,ny) :: H_gl !< flotation thickness at the time (deja declare autre version) |
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| 65 | real, dimension(nx,ny) :: H_beggin !< thickness when the point begins to be prescribed |
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| 66 | real, dimension(nx,ny) :: time_beggin !< time when the point begins to be prescribed |
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| 67 | real, dimension(nx,ny) :: time_just_gr !< time when the point is just grounded |
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| 68 | |
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| 69 | contains |
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| 70 | |
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| 71 | !______________________________________________________________________________________ |
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| 72 | !> initialise prescribe H |
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| 73 | !! calculate the initial grounding line position |
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| 74 | !! @return MK_flot0 and Mk_gl0 |
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| 75 | |
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| 76 | subroutine init_prescribe_H |
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| 77 | |
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| 78 | implicit none |
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| 79 | if (itracebug.eq.1) call tracebug(' Entree dans routine init_prescribe_H') |
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| 80 | |
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| 81 | ! keep the mask of floating points |
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| 82 | where (flot(:,:)) |
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| 83 | MK_flot0(:,:)= 1 |
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| 84 | elsewhere |
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| 85 | MK_flot0(:,:)= 0 |
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| 86 | end where |
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| 87 | |
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| 88 | |
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| 89 | ! determine the initial grounding line |
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| 90 | |
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| 91 | MK_gl0(:,:)=0 |
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| 92 | HP0(:,:)=H0(:,:) |
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| 93 | |
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| 94 | |
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| 95 | do j=2,ny-1 |
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| 96 | do i=2,nx-1 |
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| 97 | voisin = MK_flot0(i-1,j) + MK_flot0(i+1,j) + MK_flot0(i,j-1) + MK_flot0(i,j+1) |
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| 98 | if ((MK_flot0(i,j).eq.0).and.(voisin.gt.0)) then ! grounded and at least one neighbour floating |
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| 99 | MK_gl0(i,j) = 1 ! tagged mask grounding line |
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| 100 | |
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| 101 | end if |
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| 102 | end do |
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| 103 | end do |
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| 104 | |
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| 105 | |
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| 106 | call prescribe_grid_boundary_0 |
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| 107 | |
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| 108 | !call init_prescribe_retreat |
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| 109 | time_gl(1)= 1000000 ! pour un run sans recul |
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| 110 | t_break = 1000000. ! pour un run avec ice shelves prescrits |
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| 111 | |
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| 112 | |
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| 113 | ! Dans le cas du Groenland ice2sea, mk_init = 3 -> noeuds qui ne bougent pas |
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| 114 | |
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| 115 | if (geoplace(1:4).eq.'GI2S') then |
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| 116 | |
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| 117 | do j = 1,ny |
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| 118 | do i = 1,nx |
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| 119 | if (mk_init(i,j).eq.3) then |
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| 120 | i_hp0 (i,j) = 1 |
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| 121 | Hp0 (i,j) = H0(i,j) |
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| 122 | endif |
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| 123 | end do |
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| 124 | end do |
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| 125 | end if |
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| 126 | |
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| 127 | |
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| 128 | |
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| 129 | if (igrdline.eq.3) then |
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| 130 | call init_prescr_ice2sea_retreat |
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| 131 | end if |
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| 132 | |
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| 133 | |
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| 134 | end subroutine init_prescribe_H |
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| 135 | !______________________________________________________________________________________ |
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| 136 | !> function prescribe_present_H_gl |
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| 137 | !! calculate the initial grounding line position |
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| 138 | !! @return i_hp(:,:) and hp(:,:) |
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| 139 | |
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| 140 | subroutine prescribe_present_H_gl |
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| 141 | |
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| 142 | implicit none |
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| 143 | |
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| 144 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_present_H_gl') |
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| 145 | |
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| 146 | where ((MK_flot0(:,:).eq. 1).or.(MK_gl0(:,:) .eq. 1)) ! floating or grounding line |
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| 147 | i_hp(:,:) = 1 ! thickness prescribed to present value |
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| 148 | hp(:,:) = Hp0(:,:) |
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| 149 | end where |
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| 150 | if (itracebug.eq.1) call tracebug(' fin prescribe_present_H_gl ') |
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| 151 | |
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| 152 | |
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| 153 | end subroutine prescribe_present_H_gl |
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| 154 | |
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| 155 | !______________________________________________________________________________________ |
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| 156 | !> function prescribe_fixed_points |
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| 157 | !! fixes thickness for some points |
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| 158 | !! @return i_hp(:,:) and hp(:,:) |
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| 159 | |
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| 160 | subroutine prescribe_fixed_points |
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| 161 | |
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| 162 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_fixed_points') |
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| 163 | where (i_hp0(:,:).eq.1) ! les points i_hp0 le sont pour tout le run |
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| 164 | i_hp(:,:) = i_hp0(:,:) |
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| 165 | Hp(:,:) = Hp0(:,:) |
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| 166 | end where |
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| 167 | |
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| 168 | if (itracebug.eq.1) call tracebug(' fin prescribe_fixed_points') |
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| 169 | |
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| 170 | |
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| 171 | end subroutine prescribe_fixed_points |
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| 172 | |
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| 173 | !______________________________________________________________________________________ |
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| 174 | !> function prescribe_paleo_gl_shelf |
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| 175 | !! calculate the grounding line thickness |
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| 176 | !! no ice shelves |
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| 177 | !! @return i_hp(:,:) and hp(:,:) |
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| 178 | |
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| 179 | subroutine prescribe_paleo_gl_shelf |
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| 180 | |
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| 181 | implicit none |
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| 182 | |
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| 183 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_paleo_gl_shelf') |
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| 184 | |
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| 185 | |
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| 186 | ! noeuds qui doivent être imposés |
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| 187 | |
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| 188 | where ((MK_flot0(:,:).eq. 1).or.(MK_gl0(:,:) .eq. 1)) ! floating or grounding line |
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| 189 | i_hp(:,:) = 1 ! thickness prescribed |
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| 190 | end where |
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| 191 | |
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| 192 | ! valeur imposee |
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| 193 | where (MK_flot0(:,:).eq. 1) ! paleo shelf epaisseur a 1 |
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| 194 | hp(:,:) = 1. |
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| 195 | end where |
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| 196 | |
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| 197 | |
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| 198 | where (MK_gl0(:,:) .eq. 1) |
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| 199 | hp(:,:) = (sealevel-Bsoc(:,:))*row/ro +1. |
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| 200 | end where |
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| 201 | |
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| 202 | |
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| 203 | end subroutine prescribe_paleo_gl_shelf |
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| 204 | |
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| 205 | |
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| 206 | !______________________________________________________________________________________ |
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| 207 | !> function prescribe_grid_boundary |
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| 208 | !! prescribe the grid boundary thickness to 0 |
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| 209 | !! @return i_hp(:,:) and hp(:,:) |
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| 210 | |
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| 211 | subroutine prescribe_grid_boundary_0 |
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| 212 | |
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| 213 | implicit none |
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| 214 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_grid_boundary_0') |
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| 215 | |
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| 216 | ! prescribe thickness on the grid boundaries |
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| 217 | i_hp(:,:) = 0 |
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| 218 | |
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| 219 | i_hp(1,:) = 1 |
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| 220 | i_hp(nx,:)= 1 |
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| 221 | hp(1,:) = 0 |
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| 222 | hp(nx,:) = 0 |
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| 223 | |
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| 224 | i_hp(:,1) = 1 |
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| 225 | i_hp(:,ny)= 1 |
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| 226 | hp(:,1) = 0 |
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| 227 | hp(:,ny) = 0 |
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| 228 | |
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| 229 | ! valeurs de reference |
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| 230 | i_hp0(1,:) = 1 |
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| 231 | i_hp0(nx,:) = 1 |
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| 232 | hp0(1,:) = 0 |
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| 233 | hp0(nx,:) = 0 |
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| 234 | |
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| 235 | i_hp0(:,1) = 1 |
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| 236 | i_hp0(:,ny) = 1 |
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| 237 | hp0(:,1) = 0 |
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| 238 | hp0(:,ny) = 0 |
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| 239 | |
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| 240 | |
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| 241 | |
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| 242 | |
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| 243 | end subroutine prescribe_grid_boundary_0 |
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| 244 | |
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| 245 | !______________________________________________________________________________________ |
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| 246 | !______________________________________________________________________________________ |
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| 247 | !> lecture of a prescribe field of delta H |
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| 248 | !! |
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| 249 | !! @return Delta_H, i_delta_H |
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| 250 | |
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| 251 | subroutine lect_prescribed_deltaH |
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| 252 | |
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| 253 | implicit none |
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| 254 | character(len=100) :: delta_H_file ! variation d'epaisseur imposee |
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| 255 | |
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| 256 | if (itracebug.eq.1) call tracebug(' Entree dans routine lect_prescribed_deltaH') |
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| 257 | if (itracebug.eq.1) call tracebug(' Attention ne dvrait pas passer par la') |
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| 258 | ! lecture |
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| 259 | delta_H_file = 'sensibxg-25km.dat' |
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| 260 | delta_H_file = trim(dirnameinp)//trim(delta_H_file) |
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| 261 | |
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| 262 | |
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| 263 | |
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| 264 | |
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| 265 | call lect_input(3,'Delta_H',1,Delta_H,delta_H_file,trim(dirnameinp)//trim(runname)//'.nc') |
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| 266 | !call lect_datfile(nx,ny,Delta_H,1,delta_H_file) |
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| 267 | |
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| 268 | do j=1,ny |
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| 269 | do i=1,nx |
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| 270 | if (Delta_H(i,j).ne.0.) then |
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| 271 | i_delta_H(i,j)=1 |
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| 272 | i_Hp(i,j)=1 ! i_delta_H might be not completely included in i_Hp |
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| 273 | Hp0(i,j) = H(i,j)-Delta_H(i,j) ! warning Delta_H is substracted |
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| 274 | |
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| 275 | if (MK_flot0(i,j).eq. 1) then ! si flotte, pas de changement d'epaisseur |
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| 276 | Hp0(i,j)=H0(i,j) |
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| 277 | else if (Hp0(i,j).lt. -Bsoc(i,j)*row/ro) then ! devient flottant |
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| 278 | Hp0(i,j) = -Bsoc(i,j)*row/ro-10. ! floating thickness - 10 |
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| 279 | MK_flot0(i,j)= 1 ! est tagge masque flottant |
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| 280 | end if |
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| 281 | Hp(i,j) = Hp0(i,j) |
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| 282 | else |
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| 283 | i_delta_H(i,j)=0 |
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| 284 | end if |
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| 285 | end do |
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| 286 | end do |
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| 287 | end subroutine lect_prescribed_deltaH |
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| 288 | |
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| 289 | !______________________________________________________________________________________ |
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| 290 | !> substract Delta_H to the current thickness |
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| 291 | !! |
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| 292 | !! @return |
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| 293 | subroutine prescribe_deltaH |
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| 294 | |
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| 295 | implicit none |
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| 296 | |
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| 297 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_deltaH') |
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| 298 | where (i_delta_H(:,:).eq.1) |
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| 299 | Hp(:,:) = Hp0(:,:) |
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| 300 | i_Hp(:,:)=1 |
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| 301 | end where |
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| 302 | end subroutine prescribe_deltaH |
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| 303 | !______________________________________________________________________________________ |
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| 304 | !> break ice shelves |
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| 305 | !! |
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| 306 | !! |
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| 307 | subroutine break_all_ice_shelves |
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| 308 | |
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| 309 | implicit none |
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| 310 | if (itracebug.eq.1) call tracebug(' Entree dans routine break_all_ice_shelves ') |
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| 311 | |
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| 312 | |
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| 313 | debug_3D(:,:,89)=0. |
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| 314 | |
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| 315 | where (flot(:,:)) ! floating from the beginning and eventually from grounding line retreat |
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| 316 | i_hp(:,:) = 1 ! thickness prescribed to 1 m |
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| 317 | hp (:,:) = 1. |
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| 318 | hp0 (:,:) = 1. |
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| 319 | H(:,:) =1. |
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| 320 | debug_3D(:,:,89)=1. |
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| 321 | |
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| 322 | end where |
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| 323 | where (MK_flot0(:,:).eq. 1) |
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| 324 | i_hp(:,:) = 1 ! thickness prescribed to 1 m |
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| 325 | hp (:,:) = 1. |
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| 326 | hp0 (:,:) = 1. |
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| 327 | H(:,:) =1. |
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| 328 | end where |
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| 329 | |
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| 330 | |
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| 331 | end subroutine break_all_ice_shelves |
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| 332 | |
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| 333 | ! |
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| 334 | !______________________________________________________________________________________ |
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| 335 | !> break ice shelves |
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| 336 | !! |
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| 337 | !! |
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| 338 | subroutine melt_ice_shelves |
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| 339 | |
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| 340 | implicit none |
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| 341 | integer :: nbvoisins,nbdeglac,iv,jv |
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| 342 | real :: hmoy,hmin,hmax |
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| 343 | |
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| 344 | if (itracebug.eq.1) call tracebug(' Entree dans routine melt_ice_shelves') |
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| 345 | |
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| 346 | do j = 2,ny-1 |
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| 347 | do i=2, nx-1 |
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| 348 | if (flot(i,j)) then ! floating |
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| 349 | i_hp(i,j) = 1 ! thickness prescribed |
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| 350 | hmoy=0. |
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| 351 | hmin=0. |
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| 352 | hmax=0. |
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| 353 | nbvoisins=0 |
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| 354 | nbdeglac=0 |
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| 355 | do jv=-1,1 |
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| 356 | do iv=1,1 |
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| 357 | if (flot(i+iv,j+jv)) then |
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| 358 | nbvoisins=nbvoisins+1 |
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| 359 | hmoy=hmoy+h(i+iv,j+jv) |
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| 360 | hmin=min(hmin,h(i+iv,j+jv)) |
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| 361 | hmax=max(hmax,h(i+iv,j+jv)) |
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| 362 | if (h(i+jv,j+jv).lt.10.) nbdeglac=nbdeglac+1 |
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| 363 | end if |
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| 364 | end do |
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| 365 | end do |
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| 366 | hmoy=hmoy/(max(nbvoisins,1)) |
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| 367 | |
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| 368 | if(H(i,j).gt.hmoy) then ! melt only if smooth |
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| 369 | hp(i,j)=H(i,j)-1.*dt |
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| 370 | else if (hmax-hmin.lt.10.) then |
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| 371 | hp(i,j)=H(i,j)-1.*dt |
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| 372 | else if ((H(i,j).lt.50.).and.(Hmin.lt.30.)) then |
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| 373 | hp(i,j)=1. |
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| 374 | else if ((H(i,j).lt.50.).and.(nbdeglac.ge.4)) then |
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| 375 | hp(i,j)=1. |
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| 376 | endif |
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| 377 | hp(i,j) = max(hp(i,j),1.) |
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| 378 | end if |
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| 379 | end do |
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| 380 | end do |
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| 381 | |
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| 382 | end subroutine melt_ice_shelves |
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| 383 | |
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| 384 | |
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| 385 | |
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| 386 | ! |
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| 387 | !______________________________________________________________________________________ |
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| 388 | !> prescribe grounding line retreat |
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| 389 | !! |
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| 390 | !! time_gl(iretreat_max) : times of the retreat steps (in) |
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| 391 | !! tag_gl(nx,ny) : tag that gives at which time a node is prescribed |
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| 392 | !! as a grounding line node |
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| 393 | !! @return Hp |
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| 394 | !! @return i_hp |
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| 395 | |
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| 396 | subroutine prescribe_retreat |
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| 397 | |
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| 398 | implicit none |
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| 399 | integer, dimension(nx,ny) :: new_tag ! working array |
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| 400 | |
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| 401 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_retreat') |
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| 402 | if (itracebug.eq.1) write(num_tracebug,*) 'time_gl(1)=', time_gl(1) |
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| 403 | |
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| 404 | new_tag(:,:) = tag_gl(:,:) ! initialize new_tag |
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| 405 | |
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| 406 | start_time: if (time.lt.time_gl(1)) then ! before the perturbation |
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| 407 | |
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| 408 | if (itracebug.eq.1) call tracebug(' Avant appel prescribe_present_H_gl') |
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| 409 | |
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| 410 | else |
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| 411 | if (itracebug.eq.1) call tracebug('avant entree step_gl') |
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| 412 | |
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| 413 | iretreat_loop: do iretreat = 1,iretreat_max-1 |
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| 414 | |
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| 415 | if (itracebug.eq.1) write(num_tracebug,*) 'iretreat',iretreat |
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| 416 | |
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| 417 | find_step: if (abs(time-time_gl(iretreat)).lt.dtmin/2.) then |
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| 418 | ! exactly on a retreat step |
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| 419 | ! write(6,*) time, 'sur un step',iretreat |
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| 420 | |
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| 421 | where (tag_gl(:,:).eq.iretreat) |
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| 422 | H_gl(:,:) = -Bsoc(:,:)*row/ro ! flotation thickness |
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| 423 | Hp(:,:) = H_gl(:,:)+5. ! +5 to be sure to be grounded |
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| 424 | ! even with small isostatic changes |
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| 425 | i_Hp(:,:) = 1 |
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| 426 | |
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| 427 | elsewhere (tag_gl(:,:).eq.iretreat+1) ! points that will be gl at next step |
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| 428 | |
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| 429 | H_gl(:,:) = -Bsoc(:,:)*row/ro ! flotation thickness |
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| 430 | dH_gl_dt(:,:) = (H(:,:)-H_gl(:,:))-5. ! thickness to be reduced to reach gl |
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| 431 | dH_gl_dt(:,:) = dH_gl_dt(:,:) / (time_gl(iretreat+1)-time_gl(iretreat)) |
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| 432 | ! rate of decrease |
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| 433 | |
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| 434 | elsewhere ((tag_gl(:,:).eq.iretreat-1).and. & ! points that become floating |
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| 435 | (upwind_gl(:,:).eq.1)) |
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| 436 | |
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| 437 | H_gl(:,:) = -Bsoc(:,:)*row/ro ! flotation thickness |
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| 438 | Hp(:,:) = H_gl(:,:)-10. ! to be sure to be floating |
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| 439 | i_Hp(:,:) = 1 |
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| 440 | new_tag(:,:) = floating_tag |
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| 441 | |
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| 442 | end where |
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| 443 | |
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| 444 | ! pour une raison mysterieuse la boucle suivante marche et celle en where ne marche pas |
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| 445 | ! (memory falut) |
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| 446 | do j=1,ny |
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| 447 | do i=1,nx |
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| 448 | if ((tag_gl(i,j).eq.iretreat-1).and. & ! points that stay gl |
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| 449 | (upwind_gl(i,j).eq.0)) then |
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| 450 | H_gl(i,j) = -Bsoc(i,j)*row/ro ! flotation thickness |
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| 451 | Hp(i,j) = H_gl(i,j)+5. ! to be sure to be grounded |
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| 452 | i_Hp(i,j) = 1 |
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| 453 | new_tag(i,j) = iretreat ! tagged with the new step number |
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| 454 | ! write(6,*) i,j,tag_gl(i,j), upwind_gl(i,j) |
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| 455 | endif |
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| 456 | end do |
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| 457 | end do |
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| 458 | |
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| 459 | !!$ where ((tag_gl(:,:).eq.iretreat-1).and. & ! points that stay gl |
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| 460 | !!$ (upwind_gl(:,:).eq.0)) |
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| 461 | !!$ |
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| 462 | !!$ H_gl(:,:) = -Bsoc(:,:)*row/ro ! flotation thickness |
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| 463 | !!$ Hp(:,:) = H_gl(:,:)+5. ! to be sure to be grounded |
---|
| 464 | !!$ i_Hp(:,:) = 1 |
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| 465 | !!$ new_tag(:,:) = iretreat ! tagged with the new step number |
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| 466 | !!$ end where |
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| 467 | |
---|
| 468 | else if ((time.gt.time_gl(iretreat)+dtmin/2.).and.(time.lt.time_gl(iretreat+1))) then |
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| 469 | ! write(6,*) time, 'entre',time_gl(iretreat),time_gl(iretreat+1) |
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| 470 | |
---|
| 471 | where (tag_gl(:,:).eq.iretreat) |
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| 472 | H_gl(:,:) = -Bsoc(:,:)*row/ro ! flotation thickness |
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| 473 | Hp(:,:) = H_gl(:,:)+5. ! +5 to be sure to be grounded |
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| 474 | ! even with small isostatic changes |
---|
| 475 | i_Hp(:,:) = 1 |
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| 476 | |
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| 477 | elsewhere (tag_gl(:,:).eq.iretreat+1) ! points that will be gl at next step |
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| 478 | Hp(:,:) = H(:,:)-dH_gl_dt(:,:)*(time-time_gl(iretreat)) |
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| 479 | i_Hp(:,:) = 1 |
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| 480 | |
---|
| 481 | elsewhere (tag_gl(:,:).eq.floating_tag) |
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| 482 | Hp(:,:) = H(:,:) |
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| 483 | i_Hp(:,:) = 1 |
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| 484 | end where |
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| 485 | |
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| 486 | else if (time.gt.time_gl(iretreat_max)) then |
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| 487 | ! write(6,*) time, 'apres iretreat_max',iretreat,time_gl(iretreat_max) |
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| 488 | |
---|
| 489 | where (tag_gl(:,:).eq.iretreat_max) |
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| 490 | H_gl(:,:) = -Bsoc(:,:)*row/ro ! flotation thickness |
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| 491 | Hp(:,:) = H_gl(:,:)+5. ! +5 to be sure to be grounded |
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| 492 | ! even with small isostatic changes |
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| 493 | i_Hp(:,:) = 1 |
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| 494 | |
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| 495 | elsewhere (tag_gl(:,:).eq.floating_tag) |
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| 496 | Hp(:,:) = H(:,:) |
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| 497 | i_Hp(:,:) = 1 |
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| 498 | end where |
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| 499 | |
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| 500 | !faire une sortie de la boucle step_gl |
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| 501 | |
---|
| 502 | end if find_step |
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| 503 | end do iretreat_loop |
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| 504 | |
---|
| 505 | end if start_time |
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| 506 | |
---|
| 507 | tag_gl(:,:) = new_tag(:,:) |
---|
| 508 | debug_3D(:,:,84) = tag_gl(:,:) |
---|
| 509 | debug_3D(:,:,85) = i_Hp(:,:) |
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| 510 | debug_3D(:,:,86) = Hp(:,:) |
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| 511 | |
---|
| 512 | end subroutine prescribe_retreat |
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| 513 | ! |
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| 514 | !______________________________________________________________________________________ |
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| 515 | !> initialise prescribe retreat |
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| 516 | !! |
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| 517 | !! @return tag_gl |
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| 518 | !! @return upwind_gl |
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| 519 | !! @return time_gl |
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| 520 | |
---|
| 521 | subroutine init_prescribe_retreat |
---|
| 522 | |
---|
| 523 | implicit none |
---|
| 524 | real, dimension(nx,ny) :: lect_tab |
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| 525 | if (itracebug.eq.1) call tracebug(' Entree dans routine init_prescribe_retreat') |
---|
| 526 | |
---|
| 527 | ! read the prescribed gl file |
---|
| 528 | |
---|
| 529 | call lect_input(3,'lecttab',1,lect_tab,trim(dirnameinp)//'masque_gl_15km_final.dat',trim(dirnameinp)//trim(runname)//'.nc') |
---|
| 530 | !call lect_datfile(nx,ny,lect_tab,1,trim(dirnameinp)//'masque_gl_15km_final.dat') |
---|
| 531 | |
---|
| 532 | tag_gl(:,:)=nint(lect_tab(:,:)) |
---|
| 533 | |
---|
| 534 | ! look if neighbors could become grounding line later |
---|
| 535 | upwind_gl(:,:) = 0 |
---|
| 536 | do j=2,ny-1 |
---|
| 537 | do i=2,nx-1 |
---|
| 538 | if ((tag_gl(i,j).ne.floating_tag).and.(tag_gl(i,j).ne.grounded_tag)) then |
---|
| 539 | if (any(tag_gl(i-1:i+1,j-1:j+1).eq.tag_gl(i,j)+1)) then |
---|
| 540 | upwind_gl(i,j) = 1 |
---|
| 541 | end if |
---|
| 542 | end if |
---|
| 543 | end do |
---|
| 544 | end do |
---|
| 545 | |
---|
| 546 | ! time of the retreat steps |
---|
| 547 | |
---|
| 548 | do i=1,iretreat_max |
---|
| 549 | time_gl(i)=(i-1)*30.+100000. |
---|
| 550 | end do |
---|
| 551 | time_gl(iretreat)=200000. |
---|
| 552 | |
---|
| 553 | write(num_rep_42,*) '! Grounding line retreat prescribed' |
---|
| 554 | write(num_rep_42,*) '! time_gl begin et suivant : ',time_gl(1),time_gl(2), & |
---|
| 555 | ' time_glmax=',time_gl(iretreat) |
---|
| 556 | |
---|
| 557 | ! beginning of breaking or melting ice shelves |
---|
| 558 | |
---|
| 559 | t_break = 1000000.d00 |
---|
| 560 | |
---|
| 561 | write(num_rep_42,*) '! t_break=', t_break |
---|
| 562 | |
---|
| 563 | end subroutine init_prescribe_retreat |
---|
| 564 | !______________________________________________________________________________________ |
---|
| 565 | !______________________________________________________________________________________ |
---|
| 566 | !> function prescribe_present_H_gl |
---|
| 567 | !! calculate the initial grounding line position |
---|
| 568 | !! @return i_hp(:,:) and hp(:,:) |
---|
| 569 | |
---|
| 570 | subroutine prescribe_present_H_gl_copy |
---|
| 571 | |
---|
| 572 | implicit none |
---|
| 573 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescribe_present_H_gl-copy') |
---|
| 574 | |
---|
| 575 | do j=1,ny |
---|
| 576 | do i=1,nx |
---|
| 577 | if ((MK_flot0(i,j).eq. 1).or.(MK_gl0(i,j) .eq. 1)) then |
---|
| 578 | i_hp(i,j) = 1 ! thickness prescribed to present value |
---|
| 579 | hp(i,j) = Hp0(i,j) |
---|
| 580 | end if |
---|
| 581 | end do |
---|
| 582 | end do |
---|
| 583 | |
---|
| 584 | !!$where ((MK_flot0(:,:).eq. 1).or.(MK_gl0(:,:) .eq. 1)) ! floating or grounding line |
---|
| 585 | !!$ i_hp(:,:) = 1 ! thickness prescribed to present value |
---|
| 586 | !!$! hp(:,:) = 1 !Hp0(:,:) |
---|
| 587 | !!$end where |
---|
| 588 | |
---|
| 589 | |
---|
| 590 | end subroutine prescribe_present_H_gl_copy |
---|
| 591 | |
---|
| 592 | !______________________________________________________________________________________ |
---|
| 593 | !> initialise prescr_ice2sea_retreat |
---|
| 594 | !! |
---|
| 595 | !! @return tag_gl |
---|
| 596 | !! @return upwind_gl |
---|
| 597 | !! @return time_gl |
---|
| 598 | |
---|
| 599 | ! nouvelle routine de recul impose de grounding line pour ice2sea : decembre 2011 |
---|
| 600 | ! cette routine transforme les informations distance en information temps ou un noeud sera just grounded" |
---|
| 601 | |
---|
| 602 | |
---|
| 603 | subroutine init_prescr_ice2sea_retreat |
---|
| 604 | |
---|
| 605 | implicit none |
---|
| 606 | |
---|
| 607 | character(len=100) :: dist_file !< nom fichier contenant les distances |
---|
| 608 | character(len=100) :: file_ncdf !< nom bidon pour lecture netcdf |
---|
| 609 | |
---|
| 610 | |
---|
| 611 | real, dimension(nx,ny) :: dist_gl ! distance à la grounding line ( a lire) |
---|
| 612 | real :: vretrait ! vitesse de retrait |
---|
| 613 | real :: delta_t |
---|
| 614 | |
---|
| 615 | real :: time_max ! pour calcul time_max |
---|
| 616 | integer :: i1 |
---|
| 617 | integer :: j1 |
---|
| 618 | |
---|
| 619 | |
---|
| 620 | namelist/retreat_ice2sea/dist_file,vretrait,time_onset |
---|
| 621 | |
---|
| 622 | |
---|
| 623 | if (itracebug.eq.1) call tracebug(' Entree dans routine init_prescr_ice2sea_retreat') |
---|
| 624 | |
---|
| 625 | ! lecture des noms de fichiers et parametres |
---|
| 626 | !-------------------------------------------- |
---|
| 627 | 428 format(A) |
---|
| 628 | |
---|
| 629 | rewind(num_param) ! pour revenir au debut du fichier param_list.dat |
---|
| 630 | read(num_param,retreat_ice2sea) |
---|
| 631 | |
---|
| 632 | write(num_rep_42,428)'!___________________________________________________________' |
---|
| 633 | write(num_rep_42,428)'! prescr_ice2sea_retreat ' |
---|
| 634 | write(num_rep_42,retreat_ice2sea) |
---|
| 635 | write(num_rep_42,428)'!___________________________________________________________' |
---|
| 636 | |
---|
| 637 | |
---|
| 638 | ! lecture de la carte de distance dites |
---|
| 639 | !------------------------------------- |
---|
| 640 | |
---|
| 641 | ! distance file : distances en km |
---|
| 642 | |
---|
| 643 | dist_file = trim(dirnameinp)//trim(dist_file) |
---|
| 644 | call lect_input(1,'dist_gl',1,dist_gl,dist_file,file_ncdf) |
---|
| 645 | |
---|
| 646 | ! les zones interdites sont taggees -1 -> les transformer en +100000 |
---|
| 647 | where ((dist_gl(:,:).eq.-1.).or.(Bsoc0(:,:).gt.0.)) |
---|
| 648 | dist_gl(:,:) = 100000. |
---|
| 649 | end where |
---|
| 650 | |
---|
| 651 | |
---|
| 652 | ! calcul de l'epaisseur H_gl, correction des distances pour mieux prendre en compte le premier recul |
---|
| 653 | |
---|
| 654 | where(Mk_flot0(:,:).eq.0) ! points poses y compris GL |
---|
| 655 | |
---|
| 656 | h_gl(:,:) = (sealevel-Bsoc(:,:))*row/ro ! epaisseur flottaison |
---|
| 657 | dist_gl(:,:) = dist_gl(:,:)+2.+2.5 ! 2 Pour avoir au moins 0 sur la GL |
---|
| 658 | ! 2.5 = demi maille 5 km |
---|
| 659 | |
---|
| 660 | time_just_gr(:,:) = dist_gl(:,:)/Vretrait + time_onset ! aussi valable pour les points GL |
---|
| 661 | H_beggin(:,:) = H0(:,:) ! pour initialiser, strictement vrai pour la GL |
---|
| 662 | |
---|
| 663 | elsewhere ! points flottants toujours prescrit |
---|
| 664 | time_just_gr(:,:) = time_onset-100000. |
---|
| 665 | time_beggin(:,:) = time_onset-110000 |
---|
| 666 | i_status(:,:) = 2 |
---|
| 667 | H_beggin(:,:) = H0(:,:) |
---|
| 668 | |
---|
| 669 | end where |
---|
| 670 | |
---|
| 671 | |
---|
| 672 | |
---|
| 673 | ! calcul specifique a la grounding line |
---|
| 674 | |
---|
| 675 | where(Mk_gl0(:,:).eq.1) |
---|
| 676 | time_beggin(:,:) = time_onset |
---|
| 677 | H_beggin(:,:) = H0(:,:) |
---|
| 678 | end where |
---|
| 679 | |
---|
| 680 | ! recherche de Time_beggin : pour les points grounded mais pas gl |
---|
| 681 | |
---|
| 682 | delta_t = dx/1000./Vretrait -0.1 ! temps pour traverser une maille |
---|
| 683 | |
---|
| 684 | do j=2,ny-1 |
---|
| 685 | do i=2,nx-1 |
---|
| 686 | if((Mk_flot0(i,j).eq.0).and.(Mk_gl0(i,j).eq.0)) then ! grounded mais pas GL |
---|
| 687 | time_max = time_onset |
---|
| 688 | do j1 = j-1,j+1 |
---|
| 689 | do i1 = i-1,i+1 |
---|
| 690 | if (Time_just_gr(i1,j1).lt.Time_just_gr(i,j)-delta_t) then ! 0.1 par securite |
---|
| 691 | time_max = max(time_max,Time_just_gr(i1,j1)) |
---|
| 692 | endif |
---|
| 693 | end do |
---|
| 694 | end do |
---|
| 695 | |
---|
| 696 | if (Time_just_gr(i,j)-time_max.lt.2.*delta_t) then |
---|
| 697 | time_beggin(i,j) = time_max |
---|
| 698 | else |
---|
| 699 | time_beggin(i,j) = Time_just_gr(i,j)-2.*delta_t |
---|
| 700 | end if |
---|
| 701 | |
---|
| 702 | |
---|
| 703 | end if |
---|
| 704 | end do |
---|
| 705 | end do |
---|
| 706 | |
---|
| 707 | ! impression pour verifier ( a enlever apres) |
---|
| 708 | !do j=1,ny |
---|
| 709 | ! do i=1,nx |
---|
| 710 | ! write(666,'(i3,1x,i3,3(f8.0,1x))') i,j,Time_just_gr(i,j),time_beggin(i,j),Time_just_gr(i,j)-time_beggin(i,j) |
---|
| 711 | ! end do |
---|
| 712 | !end do |
---|
| 713 | |
---|
| 714 | |
---|
| 715 | end subroutine init_prescr_ice2sea_retreat |
---|
| 716 | !______________________________________________________________________________________ |
---|
| 717 | |
---|
| 718 | subroutine prescr_ice2sea_retreat |
---|
| 719 | |
---|
| 720 | implicit none |
---|
| 721 | real :: t_local ! pour les tests car time est en double precision |
---|
| 722 | |
---|
| 723 | if (itracebug.eq.1) call tracebug(' Entree dans routine prescr_ice2sea_retreat') |
---|
| 724 | |
---|
| 725 | !temps dans la boucle |
---|
| 726 | t_local = time |
---|
| 727 | |
---|
| 728 | ! avant le demarrage la grounding line est fixee a sa valeur actuelle |
---|
| 729 | |
---|
| 730 | if (t_local.lt.time_onset) then |
---|
| 731 | |
---|
| 732 | where ((MK_flot0(:,:).eq. 1).or.(MK_gl0(:,:) .eq. 1)) ! floating or grounding line |
---|
| 733 | i_hp(:,:) = 1 ! thickness prescribed to present value |
---|
| 734 | hp(:,:) = Hp0(:,:) |
---|
| 735 | end where |
---|
| 736 | |
---|
| 737 | else ! calcul du H prescrit avec recul |
---|
| 738 | |
---|
| 739 | do j=2,ny-1 |
---|
| 740 | do i= 2,nx-1 |
---|
| 741 | |
---|
| 742 | ! point pas encore impose |
---|
| 743 | |
---|
| 744 | time_test: if (t_local.lt.time_beggin(i,j)) then |
---|
| 745 | i_Hp(i,j) = 0 |
---|
| 746 | i_status(i,j) = 0 |
---|
| 747 | |
---|
| 748 | ! point en periode de retrait |
---|
| 749 | |
---|
| 750 | else if ( (t_local.ge.time_beggin(i,j)).and.(t_local.le.time_just_gr(i,j)) ) then |
---|
| 751 | |
---|
| 752 | retrait: if (i_status(i,j).eq.0) then ! on vient de rentrer dans la periode retrait |
---|
| 753 | i_status(i,j) = 1 |
---|
| 754 | H_beggin(i,j) = H(i,j) |
---|
| 755 | i_Hp(i,j) = 0 ! on n'impose pas H le premier coup |
---|
| 756 | |
---|
| 757 | else if (i_status(i,j) .eq. 1) then |
---|
| 758 | i_Hp(i,j) = 1 ! on impose ce point |
---|
| 759 | h_gl(i,j) = (sealevel-Bsoc(i,j))*row/ro ! epaisseur flottaison |
---|
| 760 | |
---|
| 761 | |
---|
| 762 | ! decroissance lineaire entre time_beggin et time_just_gr |
---|
| 763 | |
---|
| 764 | Hp(i,j) = (H_beggin(i,j) - H_gl(i,j)) * ( (time_just_gr(i,j) - t_local) & |
---|
| 765 | / (time_just_gr(i,j) - time_beggin(i,j))) + H_gl(i,j) |
---|
| 766 | end if retrait |
---|
| 767 | |
---|
| 768 | ! point en periode flottantte |
---|
| 769 | |
---|
| 770 | else if (t_local.gt.time_just_gr(i,j)) then |
---|
| 771 | |
---|
| 772 | h_gl(i,j) = (sealevel-Bsoc(i,j))*row/ro ! epaisseur flottaison |
---|
| 773 | i_status(i,j) = 2 |
---|
| 774 | i_Hp(i,j) = 1 ! on impose ce point |
---|
| 775 | Hp(i,j) = min(H_gl(i,j)-10., H0(i,j)) ! minimum flottaison ou epaisseur initiale |
---|
| 776 | |
---|
| 777 | end if time_test |
---|
| 778 | end do |
---|
| 779 | end do |
---|
| 780 | end if |
---|
| 781 | end subroutine prescr_ice2sea_retreat |
---|
| 782 | |
---|
| 783 | |
---|
| 784 | end module prescribe_H |
---|