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| 2 | |
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| 3 | subroutine SISVAT_zCr |
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| 4 | C + |
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| 5 | C +------------------------------------------------------------------------+ |
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| 6 | C | MAR SISVAT_zCr 12-12-2002 MAR | |
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| 7 | C | SubRoutine SISVAT_zCr determines criteria for Layers Agregation | |
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| 8 | C | | |
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| 9 | C +------------------------------------------------------------------------+ |
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| 10 | C | | |
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| 11 | C | PARAMETERS: klonv: Total Number of columns = | |
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| 12 | C | ^^^^^^^^^^ = Total Number of continental grid boxes | |
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| 13 | C | X Number of Mosaic Cell per grid box | |
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| 14 | C | | |
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| 15 | C | INPUT / isnoSV = total Nb of Ice/Snow Layers | |
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| 16 | C | OUTPUT: iiceSV = total Nb of Ice Layers | |
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| 17 | C | ^^^^^^ ispiSV = 0,...,nsno: Uppermost Superimposed Ice Layer | |
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| 18 | C | istoSV = 0,...,5 : Snow History (see istdSV data) | |
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| 19 | C | | |
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| 20 | C | INPUT / ro__SV : Soil/Snow Volumic Mass [kg/m3] | |
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| 21 | C | OUTPUT: & Snow Temperatures (layers 1,2,...,nsno) [K] | |
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| 22 | C | ^^^^^^ G1snSV : Dendricity (<0) or Sphericity (>0) of Snow Layer | |
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| 23 | C | G2snSV : Sphericity (>0) or Size of Snow Layer | |
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| 24 | C | agsnSV : Snow Age [day] | |
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| 25 | C | | |
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| 26 | C | OUTPUT: LIndsv : Relative Index of a contiguous Layer to agregate | |
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| 27 | C | ^^^^^^ | |
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| 28 | C +------------------------------------------------------------------------+ |
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| 29 | C + |
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| 30 | C + |
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| 31 | C + |
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| 32 | C + |
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| 33 | C +--Global Variables |
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| 34 | C + ================ |
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| 35 | C |
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| 36 | use VARphy |
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| 37 | use VAR_SV |
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| 38 | use VARdSV |
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| 39 | use VAR0SV |
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| 40 | use VARxSV |
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| 41 | use VARySV |
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| 42 | use VARtSV |
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| 43 | |
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| 44 | IMPLICIT NONE |
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| 45 | |
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| 46 | C + |
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| 47 | C + |
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| 48 | C +--Internal Variables |
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| 49 | C + ================== |
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| 50 | C + |
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| 51 | integer ikl ,isn ,is0 ,is1 |
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| 52 | integer isno_1 ! Switch: ! Snow Layer over Ice |
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| 53 | real Dtyp_0,Dtyp_1 ! Snow Grains Difference Measure |
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| 54 | real DenSph ! 1. when contiguous spheric |
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| 55 | C + ! and dendritic Grains |
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| 56 | real DendOK ! 1. when dendritic Grains |
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| 57 | real dTypMx ! Grain Type Differ. |
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| 58 | real dTypSp ! Sphericity Weight |
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| 59 | real dTypRo ! Density Weight |
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| 60 | real dTypDi ! Grain Diam.Weight |
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| 61 | real dTypHi ! History Weight |
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| 62 | |
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| 63 | |
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| 64 | C +--DATA |
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| 65 | C + ==== |
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| 66 | |
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| 67 | data dTypMx / 200.0 / ! Grain Type Weight |
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| 68 | data dTypSp / 0.5 / ! Sphericity Weight |
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| 69 | data dTypRo / 0.5 / ! Density Weight |
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| 70 | data dTypDi / 10.0 / ! Grain Diam.Weight |
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| 71 | data dTypHi / 100.0 / ! History Weight |
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| 72 | |
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| 73 | |
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| 74 | C +--Agregation Criteria |
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| 75 | C + =================== |
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| 76 | C + |
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| 77 | DO ikl=1,knonv |
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| 78 | i_thin(ikl) = min(i_thin(ikl),isnoSV(ikl)) |
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| 79 | isn = max(1 ,i_thin(ikl)) |
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| 80 | C + |
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| 81 | C + |
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| 82 | C +--Comparison with the downward Layer |
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| 83 | C + ---------------------------------- |
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| 84 | C + |
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| 85 | |
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| 86 | is0 = max(1, i_thin(ikl)-1 ) ! Downward Layer Index |
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| 87 | DenSph = max(zero, ! isn/is1 |
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| 88 | . sign(unun, ! Dendricity/Sphericity |
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| 89 | . epsi-G1snSV(ikl,isn) ! Switch |
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| 90 | . *G1snSV(ikl,is0))) ! |
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| 91 | DendOK = max(zero, ! Dendricity Switch |
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| 92 | . sign(unun, ! |
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| 93 | . epsi-G1snSV(ikl,isn))) ! |
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| 94 | C + |
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| 95 | Dtyp_0 = |
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| 96 | . DenSph * dTypMx |
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| 97 | . +(1.-DenSph) |
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| 98 | . * DendOK *((abs(G1snSV(ikl,isn) ! Dendricity |
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| 99 | . -G1snSV(ikl,is0)) ! Contribution |
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| 100 | . +abs(G2snSV(ikl,isn) ! Sphericity |
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| 101 | . -G2snSV(ikl,is0))) *dTypSp ! Contribution |
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| 102 | . +abs(ro__SV(ikl,isn) ! Density |
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| 103 | . -ro__SV(ikl,is0)) *dTypRo) ! Contribution |
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| 104 | . +(1.-DenSph) ! |
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| 105 | . *(1.-DendOK)*((abs(G1snSV(ikl,isn) ! Sphericity |
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| 106 | . -G1snSV(ikl,is0)) ! Contribution |
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| 107 | . +abs(G2snSV(ikl,isn) ! Size |
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| 108 | . -G2snSV(ikl,is0))) *dTypDi ! Contribution |
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| 109 | . +abs(ro__SV(ikl,isn) ! Density |
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| 110 | . -ro__SV(ikl,is0)) *dTypRo) ! Contribution |
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| 111 | Dtyp_0 = ! |
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| 112 | . min(dTypMx, ! |
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| 113 | . Dtyp_0 ! |
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| 114 | . +abs(istoSV(ikl,isn) ! History |
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| 115 | . -istoSV(ikl,is0)) *dTypHi) ! Contribution |
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| 116 | . + (1 -abs(isn-is0)) * 1.e+6 !"Same Layer"Score |
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| 117 | . + max(0,1-abs(iiceSV(ikl) !"Ice /Snow |
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| 118 | . -is0)) * 1.e+6 ! Interface" Score |
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| 119 | C + |
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| 120 | C + |
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| 121 | C +--Comparison with the upward Layer |
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| 122 | C + ---------------------------------- |
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| 123 | C + |
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| 124 | is1 = min( i_thin(ikl)+1, ! Upward Layer Index |
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| 125 | . max(1, isnoSV(ikl) )) ! |
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| 126 | DenSph = max(zero, ! isn/is1 |
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| 127 | . sign(unun, ! Dendricity/Sphericity |
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| 128 | . epsi-G1snSV(ikl,isn) ! Switch |
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| 129 | . *G1snSV(ikl,is1))) ! |
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| 130 | DendOK = max(zero, ! Dendricity Switch |
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| 131 | . sign(unun, ! |
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| 132 | . epsi-G1snSV(ikl,isn))) ! |
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| 133 | C + |
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| 134 | Dtyp_1 = |
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| 135 | . DenSph * dTypMx |
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| 136 | . +(1.-DenSph) |
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| 137 | . * DendOK *((abs(G1snSV(ikl,isn) ! Dendricity |
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| 138 | . -G1snSV(ikl,is1)) ! Contribution |
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| 139 | . +abs(G2snSV(ikl,isn) ! Sphericity |
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| 140 | . -G2snSV(ikl,is1))) *dTypSp ! Contribution |
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| 141 | . +abs(ro__SV(ikl,isn) ! Density |
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| 142 | . -ro__SV(ikl,is1)) *dTypRo) ! Contribution |
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| 143 | . +(1.-DenSph) ! |
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| 144 | . *(1.-DendOK)*((abs(G1snSV(ikl,isn) ! Sphericity |
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| 145 | . -G1snSV(ikl,is1)) ! Contribution |
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| 146 | . +abs(G2snSV(ikl,isn) ! Size |
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| 147 | . -G2snSV(ikl,is1))) *dTypDi ! Contribution |
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| 148 | . +abs(ro__SV(ikl,isn) ! Density |
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| 149 | . -ro__SV(ikl,is1)) *dTypRo) ! Contribution |
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| 150 | Dtyp_1 = ! |
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| 151 | . min(dTypMx, ! |
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| 152 | . Dtyp_1 ! |
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| 153 | . +abs(istoSV(ikl,isn) ! History |
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| 154 | . -istoSV(ikl,is1)) *dTypHi) ! Contribution |
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| 155 | . + (1 -abs(isn-is1)) * 1.e+6 !"Same Layer"Score |
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| 156 | . + max(0,1-abs(iiceSV(ikl) !"Ice /Snow |
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| 157 | . -isn)) * 1.e+6 ! Interface" Score |
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| 158 | C + |
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| 159 | C + |
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| 160 | C +--Index of the Layer to agregate |
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| 161 | C + ============================== |
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| 162 | C + |
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| 163 | LIndsv(ikl) = sign(unun,Dtyp_0 |
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| 164 | . -Dtyp_1) |
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| 165 | isno_1 = (1 -min (abs(isnoSV(ikl) ! Switch = 1 |
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| 166 | . -iiceSV(ikl)-1),1)) ! if isno = iice +1 |
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| 167 | . * (1 -min (abs(isnoSV(ikl) ! Switch = 1 |
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| 168 | . -i_thin(ikl) ),1)) ! if isno = i_ithin |
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| 169 | LIndsv(ikl) = (1 -isno_1) *LIndsv(ikl) ! Contiguous Layer is |
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| 170 | . -isno_1 ! downward for top L. |
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| 171 | i_thin(ikl) = max(1, i_thin(ikl) ) |
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| 172 | END DO |
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| 173 | C + |
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| 174 | return |
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| 175 | end |
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