- Timestamp:
- 2020-09-15T12:49:18+02:00 (4 years ago)
- File:
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- 1 edited
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NEMO/branches/2020/temporary_r4_trunk/src/OCE/ZDF/zdfdrg.F90
r13466 r13469 115 115 ! 116 116 IF( l_log_not_linssh ) THEN !== "log layer" ==! compute Cd and -Cd*|U| 117 DO jj = 2, jpjm1 118 DO ji = 2, jpim1 119 imk = k_mk(ji,jj) ! ocean bottom level at t-points 120 zut = un(ji,jj,imk) + un(ji-1,jj,imk) ! 2 x velocity at t-point 121 zvt = vn(ji,jj,imk) + vn(ji,jj-1,imk) 122 zzz = 0.5_wp * e3t_n(ji,jj,imk) ! altitude below/above (top/bottom) the boundary 123 ! 117 DO_2D_00_00 118 imk = k_mk(ji,jj) ! ocean bottom level at t-points 119 zut = uu(ji,jj,imk,Nii) + uu(ji-1,jj,imk,Nii) ! 2 x velocity at t-point 120 zvt = vv(ji,jj,imk,Nii) + vv(ji,jj-1,imk,Nii) 121 zzz = 0.5_wp * e3t_n(ji,jj,imk) ! altitude below/above (top/bottom) the boundary 122 ! 124 123 !!JC: possible WAD implementation should modify line below if layers vanish 125 zcd = ( vkarmn / LOG( zzz / pz0 ) )**2 126 zcd = pCd0(ji,jj) * MIN( MAX( pCdmin , zcd ) , pCdmax ) ! here pCd0 = mask*boost 127 pCdU(ji,jj) = - zcd * SQRT( 0.25 * ( zut*zut + zvt*zvt ) + pke0 ) 128 END DO 129 END DO 124 zcd = ( vkarmn / LOG( zzz / pz0 ) )**2 125 zcd = pCd0(ji,jj) * MIN( MAX( pCdmin , zcd ) , pCdmax ) ! here pCd0 = mask*boost 126 pCdU(ji,jj) = - zcd * SQRT( 0.25 * ( zut*zut + zvt*zvt ) + pke0 ) 127 END_2D 130 128 ELSE !== standard Cd ==! 131 DO jj = 2, jpjm1 132 DO ji = 2, jpim1 133 imk = k_mk(ji,jj) ! ocean bottom level at t-points 134 zut = un(ji,jj,imk) + un(ji-1,jj,imk) ! 2 x velocity at t-point 135 zvt = vn(ji,jj,imk) + vn(ji,jj-1,imk) 136 ! ! here pCd0 = mask*boost * drag 137 pCdU(ji,jj) = - pCd0(ji,jj) * SQRT( 0.25 * ( zut*zut + zvt*zvt ) + pke0 ) 138 END DO 139 END DO 129 DO_2D_00_00 130 imk = k_mk(ji,jj) ! ocean bottom level at t-points 131 zut = uu(ji,jj,imk,Nii) + uu(ji-1,jj,imk,Nii) ! 2 x velocity at t-point 132 zvt = vv(ji,jj,imk,Nii) + vv(ji,jj-1,imk,Nii) 133 ! ! here pCd0 = mask*boost * drag 134 pCdU(ji,jj) = - pCd0(ji,jj) * SQRT( 0.25 * ( zut*zut + zvt*zvt ) + pke0 ) 135 END_2D 140 136 ENDIF 141 137 ! … … 177 173 ENDIF 178 174 179 DO jj = 2, jpjm1 180 DO ji = 2, jpim1 181 ikbu = mbku(ji,jj) ! deepest wet ocean u- & v-levels 182 ikbv = mbkv(ji,jj) 175 DO_2D_00_00 176 ikbu = mbku(ji,jj) ! deepest wet ocean u- & v-levels 177 ikbv = mbkv(ji,jj) 178 ! 179 ! Apply stability criteria on absolute value : abs(bfr/e3) < 1/(2dt) => bfr/e3 > -1/(2dt) 180 zCdu = 0.5*( rCdU_bot(ji+1,jj)+rCdU_bot(ji,jj) ) / e3u_n(ji,jj,ikbu) 181 zCdv = 0.5*( rCdU_bot(ji,jj+1)+rCdU_bot(ji,jj) ) / e3v_n(ji,jj,ikbv) 182 ! 183 pua(ji,jj,ikbu) = pua(ji,jj,ikbu) + MAX( zCdu , zm1_2dt ) * pub(ji,jj,ikbu) 184 pva(ji,jj,ikbv) = pva(ji,jj,ikbv) + MAX( zCdv , zm1_2dt ) * pvb(ji,jj,ikbv) 185 END_2D 186 ! 187 IF( ln_isfcav ) THEN ! ocean cavities 188 DO_2D_00_00 189 ikbu = miku(ji,jj) ! first wet ocean u- & v-levels 190 ikbv = mikv(ji,jj) 183 191 ! 184 192 ! Apply stability criteria on absolute value : abs(bfr/e3) < 1/(2dt) => bfr/e3 > -1/(2dt) 185 zCdu = 0.5*( rCdU_ bot(ji+1,jj)+rCdU_bot(ji,jj) ) / e3u_n(ji,jj,ikbu)186 zCdv = 0.5*( rCdU_ bot(ji,jj+1)+rCdU_bot(ji,jj) ) / e3v_n(ji,jj,ikbv)193 zCdu = 0.5*( rCdU_top(ji+1,jj)+rCdU_top(ji,jj) ) / e3u_n(ji,jj,ikbu) ! NB: Cdtop masked 194 zCdv = 0.5*( rCdU_top(ji,jj+1)+rCdU_top(ji,jj) ) / e3v_n(ji,jj,ikbv) 187 195 ! 188 196 pua(ji,jj,ikbu) = pua(ji,jj,ikbu) + MAX( zCdu , zm1_2dt ) * pub(ji,jj,ikbu) 189 197 pva(ji,jj,ikbv) = pva(ji,jj,ikbv) + MAX( zCdv , zm1_2dt ) * pvb(ji,jj,ikbv) 190 END DO 191 END DO 192 ! 193 IF( ln_isfcav ) THEN ! ocean cavities 194 DO jj = 2, jpjm1 195 DO ji = 2, jpim1 196 ikbu = miku(ji,jj) ! first wet ocean u- & v-levels 197 ikbv = mikv(ji,jj) 198 ! 199 ! Apply stability criteria on absolute value : abs(bfr/e3) < 1/(2dt) => bfr/e3 > -1/(2dt) 200 zCdu = 0.5*( rCdU_top(ji+1,jj)+rCdU_top(ji,jj) ) / e3u_n(ji,jj,ikbu) ! NB: Cdtop masked 201 zCdv = 0.5*( rCdU_top(ji,jj+1)+rCdU_top(ji,jj) ) / e3v_n(ji,jj,ikbv) 202 ! 203 pua(ji,jj,ikbu) = pua(ji,jj,ikbu) + MAX( zCdu , zm1_2dt ) * pub(ji,jj,ikbu) 204 pva(ji,jj,ikbv) = pva(ji,jj,ikbv) + MAX( zCdv , zm1_2dt ) * pvb(ji,jj,ikbv) 205 END DO 206 END DO 198 END_2D 207 199 ENDIF 208 200 ! … … 442 434 l_log_not_linssh = .FALSE. !- don't update Cd at each time step 443 435 ! 444 DO jj = 1, jpj ! pCd0 = mask (and boosted) logarithmic drag coef. 445 DO ji = 1, jpi 446 zzz = 0.5_wp * e3t_0(ji,jj,k_mk(ji,jj)) 447 zcd = ( vkarmn / LOG( zzz / rn_z0 ) )**2 448 pCd0(ji,jj) = zmsk_boost(ji,jj) * MIN( MAX( rn_Cd0 , zcd ) , rn_Cdmax ) ! rn_Cd0 < Cd0 < rn_Cdmax 449 END DO 450 END DO 436 DO_2D_11_11 437 zzz = 0.5_wp * e3t_0(ji,jj,k_mk(ji,jj)) 438 zcd = ( vkarmn / LOG( zzz / rn_z0 ) )**2 439 pCd0(ji,jj) = zmsk_boost(ji,jj) * MIN( MAX( rn_Cd0 , zcd ) , rn_Cdmax ) ! rn_Cd0 < Cd0 < rn_Cdmax 440 END_2D 451 441 ELSE !* Cd updated at each time-step ==> pCd0 = mask * boost 452 442 IF(lwp) WRITE(numout,*)
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