| 1 | ! |
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| 2 | ! |
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| 3 | ! |
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| 4 | SUBROUTINE thermcell_dq(ngrid,nlay,ptimestep,fm,entr,detr,masse, & |
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| 5 | q,dq,qa,lmin) |
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| 6 | |
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| 7 | |
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| 8 | !=============================================================================== |
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| 9 | ! Purpose: Calcul du transport verticale dans la couche limite en presence de |
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| 10 | ! "thermiques" explicitement representes |
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| 11 | ! Calcul du dq/dt une fois qu'on connait les ascendances |
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| 12 | ! |
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| 13 | ! Modif 2013/01/04 (FH hourdin@lmd.jussieu.fr) |
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| 14 | ! Introduction of an implicit computation of vertical advection in the environ- |
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| 15 | ! ment of thermal plumes in thermcell_dq |
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| 16 | ! |
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| 17 | ! Modif 2019/04 (AB alexandre.boissinot@lmd.jussieu.fr) |
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| 18 | ! dqimpl = 1 : implicit scheme |
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| 19 | ! dqimpl = 0 : explicit scheme |
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| 20 | ! |
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| 21 | !=============================================================================== |
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| 22 | |
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| 23 | USE print_control_mod, ONLY: prt_level |
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| 24 | USe thermcell_mod, ONLY: dqimpl |
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| 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | |
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| 28 | |
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| 29 | !=============================================================================== |
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| 30 | ! Declaration |
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| 31 | !=============================================================================== |
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| 32 | |
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| 33 | ! Inputs: |
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| 34 | ! ------- |
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| 35 | |
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| 36 | INTEGER ngrid, nlay |
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| 37 | INTEGER lmin(ngrid) |
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| 38 | |
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| 39 | REAL ptimestep |
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| 40 | REAL masse(ngrid,nlay) |
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| 41 | REAL fm(ngrid,nlay+1) |
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| 42 | REAL entr(ngrid,nlay) |
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| 43 | REAL detr(ngrid,nlay) |
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| 44 | REAL q(ngrid,nlay) |
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| 45 | |
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| 46 | ! Outputs: |
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| 47 | ! -------- |
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| 48 | |
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| 49 | REAL dq(ngrid,nlay) |
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| 50 | REAL qa(ngrid,nlay) |
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| 51 | |
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| 52 | ! Local: |
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| 53 | ! ------ |
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| 54 | |
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| 55 | INTEGER ig, l |
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| 56 | INTEGER niter, iter |
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| 57 | |
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| 58 | REAL cfl |
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| 59 | REAL qold(ngrid,nlay) |
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| 60 | REAL fqa(ngrid,nlay+1) |
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| 61 | REAL wqd(ngrid,nlay+1) |
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| 62 | REAL zzm |
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| 63 | |
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| 64 | !=============================================================================== |
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| 65 | ! Initialization |
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| 66 | !=============================================================================== |
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| 67 | |
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| 68 | qold(:,:) = q(:,:) |
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| 69 | |
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| 70 | !=============================================================================== |
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| 71 | ! Tracer variation computation |
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| 72 | !=============================================================================== |
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| 73 | |
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| 74 | !------------------------------------------------------------------------------- |
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| 75 | ! CFL criterion computation for advection in downdraft |
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| 76 | !------------------------------------------------------------------------------- |
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| 77 | |
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| 78 | cfl = 0. |
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| 79 | |
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| 80 | DO l=1,nlay |
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| 81 | DO ig=1,ngrid |
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| 82 | zzm = masse(ig,l) / ptimestep |
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| 83 | cfl = max(cfl, fm(ig,l) / zzm) |
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| 84 | |
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| 85 | IF (entr(ig,l).gt.zzm) THEN |
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| 86 | print *, 'ERROR: entrainment is greater than the layer mass!' |
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| 87 | print *, 'ig,l,entr', ig, l, entr(ig,l) |
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| 88 | print *, '-------------------------------' |
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| 89 | print *, 'entr*dt,mass', entr(ig,l)*ptimestep, masse(ig,l) |
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| 90 | print *, '-------------------------------' |
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| 91 | print *, 'fm+', fm(ig,l+1) |
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| 92 | print *, 'entr,detr', entr(ig,l), detr(ig,l) |
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| 93 | print *, 'fm ', fm(ig,l) |
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| 94 | print *, 'entr,detr', entr(ig,l-1), detr(ig,l-1) |
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| 95 | print *, 'fm-', fm(ig,l-1) |
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| 96 | CALL abort |
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| 97 | ENDIF |
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| 98 | ENDDO |
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| 99 | ENDDO |
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| 100 | |
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| 101 | !------------------------------------------------------------------------------- |
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| 102 | ! Computation of tracer concentrations in the ascending plume |
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| 103 | !------------------------------------------------------------------------------- |
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| 104 | |
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| 105 | DO ig=1,ngrid |
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| 106 | DO l=1,lmin(ig) |
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| 107 | qa(ig,l) = q(ig,l) |
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| 108 | ENDDO |
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| 109 | ENDDO |
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| 110 | |
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| 111 | DO ig=1,ngrid |
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| 112 | DO l=lmin(ig)+1,nlay |
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| 113 | IF ((fm(ig,l+1)+detr(ig,l))*ptimestep.gt.1.e-6*masse(ig,l)) THEN |
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| 114 | qa(ig,l) = (fm(ig,l) * qa(ig,l-1) + entr(ig,l) * q(ig,l)) & |
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| 115 | & / (fm(ig,l+1) + detr(ig,l)) |
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| 116 | ELSE |
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| 117 | qa(ig,l) = q(ig,l) |
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| 118 | ENDIF |
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| 119 | |
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| 120 | ! IF (qa(ig,l).lt.0.) THEN |
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| 121 | ! print *, 'WARNING: qa is negative!' |
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| 122 | ! print *, 'qa', qa(ig,l) |
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| 123 | ! ENDIF |
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| 124 | |
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| 125 | ! IF (q(ig,l).lt.0.) THEN |
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| 126 | ! print *, 'WARNING: q is negative!' |
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| 127 | ! print *, 'q', q(ig,l) |
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| 128 | ! ENDIF |
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| 129 | ENDDO |
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| 130 | ENDDO |
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| 131 | |
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| 132 | !------------------------------------------------------------------------------- |
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| 133 | ! Plume vertical flux of tracer |
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| 134 | !------------------------------------------------------------------------------- |
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| 135 | |
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| 136 | DO l=2,nlay-1 |
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| 137 | fqa(:,l) = fm(:,l) * qa(:,l-1) |
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| 138 | ENDDO |
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| 139 | |
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| 140 | fqa(:,1) = 0. |
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| 141 | fqa(:,nlay) = 0. |
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| 142 | |
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| 143 | !------------------------------------------------------------------------------- |
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| 144 | ! Trace species evolution |
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| 145 | !------------------------------------------------------------------------------- |
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| 146 | |
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| 147 | IF (dqimpl==0) THEN |
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| 148 | DO l=1,nlay-1 |
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| 149 | q(:,l) = q(:,l) + (fqa(:,l) - fqa(:,l+1) - fm(:,l) * q(:,l) & |
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| 150 | & + fm(:,l+1) * q(:,l+1)) * ptimestep / masse(:,l) |
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| 151 | ENDDO |
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| 152 | ELSEIF (dqimpl==1) THEN |
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| 153 | DO l=nlay-1,1,-1 |
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| 154 | q(:,l) = ( q(:,l) + ptimestep / masse(:,l) & |
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| 155 | & * ( fqa(:,l) - fqa(:,l+1) + fm(:,l+1) * q(:,l+1) ) ) & |
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| 156 | & / ( 1. + fm(:,l) * ptimestep / masse(:,l) ) |
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| 157 | ENDDO |
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| 158 | ELSE |
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| 159 | print *, 'ERROR: No corresponding scheme for mixing computations!' |
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| 160 | print *, ' dqimpl must be equal to 1, 0 or -1 but' |
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| 161 | print *, 'dqimpl =', dqimpl |
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| 162 | call abort |
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| 163 | ENDIF |
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| 164 | |
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| 165 | !=============================================================================== |
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| 166 | ! Tendencies |
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| 167 | !=============================================================================== |
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| 168 | |
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| 169 | DO l=1,nlay |
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| 170 | DO ig=1,ngrid |
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| 171 | dq(ig,l) = (q(ig,l) - qold(ig,l)) / ptimestep |
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| 172 | q(ig,l) = qold(ig,l) |
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| 173 | ENDDO |
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| 174 | ENDDO |
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| 175 | |
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| 176 | |
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| 177 | RETURN |
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| 178 | END |
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