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heimbach |
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C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_init_varia.F,v 1.6 2011/06/29 16:24:10 dng Exp $ |
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C $Name: $ |
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#include "STREAMICE_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP |
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SUBROUTINE STREAMICE_ADVECT_THICKNESS ( myThid, time_step ) |
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C /============================================================\ |
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C | SUBROUTINE | |
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C | o | |
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C |============================================================| |
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C | | |
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C \============================================================/ |
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IMPLICIT NONE |
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C === Global variables === |
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#include "SIZE.h" |
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#include "GRID.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "STREAMICE.h" |
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#include "STREAMICE_ADV.h" |
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INTEGER myThid |
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_RL time_step |
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#ifdef ALLOW_STREAMICE |
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INTEGER i, j, bi, bj |
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_RL thick_bd |
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_RL SLOPE_LIMITER |
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_RL sec_per_year, time_step_loc |
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external SLOPE_LIMITER |
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sec_per_year = 365.*86400. |
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time_step_loc = time_step / sec_per_year |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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hflux_x_SI (i,j,bi,bj) = 0. _d 0 |
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hflux_y_SI (i,j,bi,bj) = 0. _d 0 |
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hflux_x_SI2 (i,j,bi,bj) = 0. _d 0 |
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hflux_y_SI2 (i,j,bi,bj) = 0. _d 0 |
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IF (STREAMICE_hmask(i,j,bi,bj).eq.1.0) THEN |
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h_after_uflux_SI (i,j,bi,bj) = |
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& H_streamice (i,j,bi,bj) |
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ENDIF |
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thick_bd = h_bdry_values_SI (i,j,bi,bj) |
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IF (thick_bd .ne. 0. _d 0) THEN |
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h_after_uflux_SI (i,j,bi,bj) = thick_bd |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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! PRINT *, "H in last row ", H_streamice(81,20,1,1) |
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CALL STREAMICE_ADVECT_THICKNESS_X ( myThid, |
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O hflux_x_SI, |
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O h_after_uflux_SI, |
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I time_step_loc ) |
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! PRINT *, "H in last row ", H_streamice(81,20,1,1) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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h_after_vflux_SI (i,j,bi,bj) = |
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& h_after_uflux_SI (i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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CALL STREAMICE_ADVECT_THICKNESS_Y ( myThid, |
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O hflux_y_SI, |
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O h_after_vflux_SI, |
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I time_step_loc ) |
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! PRINT *, "H in last row ", H_streamice(81,20,1,1) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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IF (STREAMICE_hmask(i,j,bi,bj).eq.1.0) THEN |
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H_streamice (i,j,bi,bj) = |
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& h_after_vflux_SI (i,j,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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! PRINT *, "H in last row ", H_streamice(81,20,1,1) |
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CALL STREAMICE_ADV_FRONT ( myThid, time_step_loc ) |
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! PRINT *, "H in last row ", H_streamice(81,20,1,1) |
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_EXCH_XY_RL( H_streamice, myThid ) |
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_EXCH_XY_RL( area_shelf_streamice, myThid ) |
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_EXCH_XY_RL( STREAMICE_hmask, myThid ) |
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PRINT *, "END STREAMICE_ADVECT_THICKNESS" |
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#endif |
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RETURN |
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END SUBROUTINE STREAMICE_ADVECT_THICKNESS |
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! NEED TO ADD SOME SORT OF CHECK THAT THE HALOS ARE LARGE ENOUGH |
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SUBROUTINE STREAMICE_ADVECT_THICKNESS_X ( myThid , |
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O hflux_x , |
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O h , |
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I time_step ) |
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IMPLICIT NONE |
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C O hflux_x ! flux per unit width across face |
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C O h |
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C I time_step |
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C === Global variables === |
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#include "SIZE.h" |
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#include "GRID.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "STREAMICE.h" |
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INTEGER myThid |
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_RL hflux_x (1-Olx:sNx+Olx,1-Oly:sNy+Oly,nSx,nSy) |
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_RL h (1-Olx:sNx+Olx,1-Oly:sNy+Oly,nSx,nSy) |
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_RL time_step |
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#ifdef ALLOW_STREAMICE |
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C LOCAL VARIABLES |
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INTEGER i, j, bi, bj, Gi, Gj, k |
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_RL uface, phi |
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_RL stencil (-1:1) |
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LOGICAL H0_valid ! there are valid cells to calculate a |
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! slope-limited 2nd order flux |
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_RL SLOPE_LIMITER |
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_RL total_vol_out |
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external SLOPE_LIMITER |
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total_vol_out = 0.0 |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-3,sNy+3 |
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Gj = (myYGlobalLo-1)+(bj-1)*sNy+j |
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IF ((Gj .ge. 1) .and. (Gj .le. Ny)) THEN |
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DO i=1-2,sNx+3 |
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C THESE ARRAY BOUNDS INSURE THAT AFTER THIS STEP, |
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C VALUES WILL BE RELIABLE 2 GRID CELLS OUT IN THE |
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C X DIRECTION AND 3 CELLS OUT IN THE Y DIR |
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IF ((STREAMICE_hmask(i,j,bi,bj).eq.1.0) .or. |
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& ((STREAMICE_hmask(i-1,j,bi,bj).eq.1.0) .and. |
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& (STREAMICE_hmask(i,j,bi,bj).ne.1.0))) THEN |
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Gi = (myXGlobalLo-1)+(bi-1)*sNx+i |
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IF (STREAMICE_ufacemask(i,j,bi,bj).eq.4.0) THEN |
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hflux_x (i,j,bi,bj) = u_flux_bdry_SI (i,j,bi,bj) |
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ELSE |
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uface = .5 * |
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& (U_streamice(i,j,bi,bj)+U_streamice(i,j+1,bi,bj)) |
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IF (uface .gt. 0. _d 0) THEN |
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DO k=-1,1 |
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stencil (k) = h(i+k-1,j,bi,bj) |
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ENDDO |
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IF ((STREAMICE_hmask(i,j,bi,bj).eq.1.0) .and. |
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& (STREAMICE_hmask(i-2,j,bi,bj).eq.1.0)) H0_valid=.true. |
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IF ((Gi.eq.1).and.(STREAMICE_hmask(i-1,j,bi,bj).eq.3.0)) |
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& THEN ! we are at western bdry and there is a thick. bdry cond |
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hflux_x (i,j,bi,bj) = h(i-1,j,bi,bj) * uface |
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ELSEIF (H0_valid) THEN |
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phi = SLOPE_LIMITER ( |
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& stencil(0)-stencil(-1), |
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& stencil(1)-stencil(0)) |
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hflux_x (i,j,bi,bj) = uface * |
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& (stencil(0) - phi * .5 * (stencil(0)-stencil(1))) |
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ELSE ! one of the two cells needed for a HO scheme is missing, use FO scheme |
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hflux_x (i,j,bi,bj) = uface * stencil(0) |
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ENDIF |
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ELSE ! uface <= 0 |
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DO k=-1,1 |
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stencil (k) = h(i-k,j,bi,bj) |
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ENDDO |
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IF ((STREAMICE_hmask(i-1,j,bi,bj).eq.1.0) .and. |
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& (STREAMICE_hmask(i+1,j,bi,bj).eq.1.0)) H0_valid=.true. |
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IF ((Gi.eq.Nx).and.(STREAMICE_hmask(i+1,j,bi,bj).eq.3.0)) |
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& THEN ! we are at western bdry and there is a thick. bdry cond |
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hflux_x (i,j,bi,bj) = h(i+1,j,bi,bj) * uface |
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ELSEIF (H0_valid) THEN |
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phi = SLOPE_LIMITER ( |
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& stencil(0)-stencil(-1), |
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& stencil(1)-stencil(0)) |
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hflux_x (i,j,bi,bj) = uface * |
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& (stencil(0) - phi * .5 * (stencil(0)-stencil(1))) |
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ELSE ! one of the two cells needed for a HO scheme is missing, use FO scheme |
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hflux_x (i,j,bi,bj) = uface * stencil(0) |
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ENDIF |
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ENDIF |
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ENDIF |
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if (streamice_ufacemask(i,j,bi,bj).eq.2.0) THEN |
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total_vol_out = total_vol_out + |
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& hflux_x (i,j,bi,bj) * time_step |
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ENDIF |
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ENDIF |
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ENDDO |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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C X-FLUXES AT CELL BOUNDARIES CALCULATED; NOW TAKE FLUX DIVERGENCE TO INCREMENT THICKNESS |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-3,sNy+3 |
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Gj = (myYGlobalLo-1)+(bj-1)*sNy+j |
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IF ((Gj .ge. 1) .and. (Gj .le. Ny)) THEN |
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DO i=1-2,sNx+2 |
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IF (STREAMICE_hmask(i,j,bi,bj).eq.1.0) THEN |
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h(i,j,bi,bj) = h(i,j,bi,bj) - time_step * |
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& (hflux_x(i+1,j,bi,bj)*dyG(i+1,j,bi,bj) - |
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& hflux_x(i,j,bi,bj)*dyG(i,j,bi,bj)) * |
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& recip_rA (i,j,bi,bj) |
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ENDIF |
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ENDDO |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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! PRINT *, "TOTAL VOLUME OUT: ", total_vol_out |
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#endif |
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RETURN |
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END SUBROUTINE STREAMICE_ADVECT_THICKNESS_X |
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SUBROUTINE STREAMICE_ADVECT_THICKNESS_Y ( myThid , |
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O hflux_y , |
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O h , |
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I time_step ) |
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IMPLICIT NONE |
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C O hflux_y ! flux per unit width across face |
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C O h |
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C I time_step |
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C === Global variables === |
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#include "SIZE.h" |
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#include "GRID.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "STREAMICE.h" |
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INTEGER myThid |
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_RL hflux_y (1-Olx:sNx+Olx,1-Oly:sNy+Oly,nSx,nSy) |
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_RL h (1-Olx:sNx+Olx,1-Oly:sNy+Oly,nSx,nSy) |
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_RL time_step |
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#ifdef ALLOW_STREAMICE |
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C LOCAL VARIABLES |
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INTEGER i, j, bi, bj, Gi, Gj, k |
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_RL vface, phi |
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_RL stencil (-1:1) |
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LOGICAL H0_valid ! there are valid cells to calculate a |
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! slope-limited 2nd order flux |
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_RL SLOPE_LIMITER |
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external SLOPE_LIMITER |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-1,sNy+2 |
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Gj = (myYGlobalLo-1)+(bj-1)*sNy+j |
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DO i=1-2,sNx+2 |
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Gi = (myXGlobalLo-1)+(bi-1)*sNx+i |
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IF ((Gi.ge.1) .and. (Gi.le.Nx)) THEN |
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C THESE ARRAY BOUNDS INSURE THAT AFTER THIS STEP, |
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C VALUES WILL BE RELIABLE 1 GRID CELLS OUT IN THE |
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C Y DIRECTION |
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IF ((STREAMICE_hmask(i,j,bi,bj).eq.1.0) .or. |
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& ((STREAMICE_hmask(i,j-1,bi,bj).eq.1.0) .and. |
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& (STREAMICE_hmask(i,j,bi,bj).ne.1.0))) THEN |
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IF (STREAMICE_vfacemask(i,j,bi,bj).eq.4.0) THEN |
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hflux_y (i,j,bi,bj) = v_flux_bdry_SI (i,j,bi,bj) |
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ELSE |
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vface = .5 * |
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& (V_streamice(i,j,bi,bj)+V_streamice(i+1,j,bi,bj)) |
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IF (vface .gt. 0. _d 0) THEN |
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DO k=-1,1 |
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stencil (k) = h(i,j+k-1,bi,bj) |
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ENDDO |
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IF ((STREAMICE_hmask(i,j,bi,bj).eq.1.0) .and. |
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& (STREAMICE_hmask(i,j-2,bi,bj).eq.1.0)) H0_valid=.true. |
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IF ((Gj.eq.1).and.(STREAMICE_hmask(i,j-1,bi,bj).eq.3.0)) |
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& THEN ! we are at western bdry and there is a thick. bdry cond |
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hflux_y (i,j,bi,bj) = h(i,j-1,bi,bj) * vface |
| 333 |
|
|
ELSEIF (H0_valid) THEN |
| 334 |
|
|
phi = SLOPE_LIMITER ( |
| 335 |
|
|
& stencil(0)-stencil(-1), |
| 336 |
|
|
& stencil(1)-stencil(0)) |
| 337 |
|
|
hflux_y (i,j,bi,bj) = vface * |
| 338 |
|
|
& (stencil(0) - phi * .5 * (stencil(0)-stencil(1))) |
| 339 |
|
|
ELSE ! one of the two cells needed for a HO scheme is missing, use FO scheme |
| 340 |
|
|
hflux_y (i,j,bi,bj) = vface * stencil(0) |
| 341 |
|
|
ENDIF |
| 342 |
|
|
ELSE ! uface <= 0 |
| 343 |
|
|
DO k=-1,1 |
| 344 |
|
|
stencil (k) = h(i,j-k,bi,bj) |
| 345 |
|
|
ENDDO |
| 346 |
|
|
IF ((STREAMICE_hmask(i,j-1,bi,bj).eq.1.0) .and. |
| 347 |
|
|
& (STREAMICE_hmask(i,j+1,bi,bj).eq.1.0)) H0_valid=.true. |
| 348 |
|
|
|
| 349 |
|
|
IF ((Gj.eq.Ny).and.(STREAMICE_hmask(i,j+1,bi,bj).eq.3.0)) |
| 350 |
|
|
& THEN ! we are at western bdry and there is a thick. bdry cond |
| 351 |
|
|
hflux_y (i,j,bi,bj) = h(i,j+1,bi,bj) * vface |
| 352 |
|
|
ELSEIF (H0_valid) THEN |
| 353 |
|
|
phi = SLOPE_LIMITER ( |
| 354 |
|
|
& stencil(0)-stencil(-1), |
| 355 |
|
|
& stencil(1)-stencil(0)) |
| 356 |
|
|
hflux_y (i,j,bi,bj) = vface * |
| 357 |
|
|
& (stencil(0) - phi * .5 * (stencil(0)-stencil(1))) |
| 358 |
|
|
ELSE ! one of the two cells needed for a HO scheme is missing, use FO scheme |
| 359 |
|
|
hflux_y (i,j,bi,bj) = vface * stencil(0) |
| 360 |
|
|
ENDIF |
| 361 |
|
|
|
| 362 |
|
|
ENDIF ! uface 0 |
| 363 |
|
|
|
| 364 |
|
|
ENDIF |
| 365 |
|
|
ENDIF |
| 366 |
|
|
ENDIF |
| 367 |
|
|
ENDDO |
| 368 |
|
|
ENDDO |
| 369 |
|
|
ENDDO |
| 370 |
|
|
ENDDO |
| 371 |
|
|
|
| 372 |
|
|
C X-FLUXES AT CELL BOUNDARIES CALCULATED; NOW TAKE FLUX DIVERGENCE TO INCREMENT THICKNESS |
| 373 |
|
|
|
| 374 |
|
|
|
| 375 |
|
|
|
| 376 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 377 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 378 |
|
|
DO j=1-1,sNy+1 |
| 379 |
|
|
DO i=1-2,sNx+2 |
| 380 |
|
|
Gi = (myXGlobalLo-1)+(bi-1)*sNx+i |
| 381 |
|
|
IF ((Gi .ge. 1) .and. (Gi .le. Nx)) THEN |
| 382 |
|
|
IF (STREAMICE_hmask(i,j,bi,bj).eq.1.0) THEN |
| 383 |
|
|
h(i,j,bi,bj) = h(i,j,bi,bj) - time_step * |
| 384 |
|
|
& (hflux_y(i,j+1,bi,bj)*dxG(i,j+1,bi,bj) - |
| 385 |
|
|
& hflux_y(i,j,bi,bj)*dxG(i,j,bi,bj)) * |
| 386 |
|
|
& recip_rA (i,j,bi,bj) |
| 387 |
|
|
ENDIF |
| 388 |
|
|
ENDIF |
| 389 |
|
|
ENDDO |
| 390 |
|
|
ENDDO |
| 391 |
|
|
ENDDO |
| 392 |
|
|
ENDDO |
| 393 |
|
|
|
| 394 |
|
|
! CALL WRITE_FLD_XY_RL ("h_after_yflux","", |
| 395 |
|
|
! & h, 0, myThid) |
| 396 |
|
|
|
| 397 |
|
|
#endif |
| 398 |
|
|
RETURN |
| 399 |
|
|
END SUBROUTINE STREAMICE_ADVECT_THICKNESS_Y |
| 400 |
|
|
|
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