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dgoldberg |
1.6 |
C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_driving_stress.F,v 1.5 2014/08/23 10:29:47 dgoldberg Exp $ |
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heimbach |
1.1 |
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_DRIVING_STRESS( myThid ) |
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! O taudx, |
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! O taudy ) |
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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 "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "STREAMICE.h" |
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#include "STREAMICE_CG.h" |
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C !INPUT/OUTPUT ARGUMENTS |
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INTEGER myThid |
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! _RL taudx (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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! _RL taudx (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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#ifdef ALLOW_STREAMICE |
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C LOCAL VARIABLES |
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INTEGER i, j, bi, bj, k, l, |
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& Gi, Gj |
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LOGICAL at_west_bdry, at_east_bdry, |
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& at_north_bdry, at_south_bdry |
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dgoldberg |
1.6 |
_RL sx, sy, diffx, diffy, geom_fac |
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heimbach |
1.1 |
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IF (myXGlobalLo.eq.1) at_west_bdry = .true. |
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IF (myYGlobalLo.eq.1) at_south_bdry = .true. |
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IF (myXGlobalLo-1+sNx*nSx.eq.Nx) |
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& at_east_bdry = .false. |
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IF (myYGlobalLo-1+sNy*nSy.eq.Ny) |
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& at_north_bdry = .false. |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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dgoldberg |
1.6 |
DO j=1-OLy+1,sNy+OLy-1 |
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DO i=1-OLx+1,sNx+OLx-1 |
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heimbach |
1.1 |
taudx_SI(i,j,bi,bj) = 0. _d 0 |
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taudy_SI(i,j,bi,bj) = 0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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dgoldberg |
1.6 |
DO i=1,sNx |
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DO j=1,sNy |
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heimbach |
1.1 |
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diffx = 0. _d 0 |
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diffy = 0. _d 0 |
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sx = 0. _d 0 |
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sy = 0. _d 0 |
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Gi = (myXGlobalLo-1)+(bi-1)*sNx+i |
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Gj = (myYGlobalLo-1)+(bj-1)*sNy+j |
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dgoldberg |
1.6 |
IF (streamice_umask(i,j,bi,bj).eq.1.0) THEN |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
IF (streamice_hmask(i-1,j,bi,bj).eq.1.0.AND. |
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& streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
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! geom_fac = sqrt(rA(i-1,j,bi,bj)*recip_rA(i,j,bi,bj)* |
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! & dxF(i,j,bi,bj)*recip_dxF(i-1,j,bi,bj)) |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& 0.25 * dyG(i,j,bi,bj) * |
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& streamice_density * gravity * |
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& (H_streamice(i,j,bi,bj)+ |
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& H_streamice(i-1,j,bi,bj)) * |
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& (surf_el_streamice(i,j,bi,bj)- |
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& surf_el_streamice(i-1,j,bi,bj)) |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& streamice_density * gravity * |
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& streamice_bg_surf_slope_x * .25 * rA(i,j,bi,bj) * |
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& (H_streamice(i-1,j,bi,bj) + H_streamice(i,j,bi,bj)) |
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ELSE IF (streamice_hmask(i-1,j,bi,bj).eq.1.0) THEN |
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IF (float_frac_streamice(i-1,j,bi,bj) .eq. 1.0) THEN |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
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& 0.25 * dyG(i,j,bi,bj) * |
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& gravity * |
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& (streamice_density * H_streamice(i-1,j,bi,bj)**2 - |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg * R_low_si(i-1,j,bi,bj)**2) |
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#else |
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& streamice_density_ocean_avg * R_low(i-1,j,bi,bj)**2) |
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#endif |
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ELSE |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
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& 0.25 * dyG(i,j,bi,bj) * |
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& streamice_density * gravity * |
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& (1-streamice_density/streamice_density_ocean_avg) * |
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& H_streamice(i-1,j,bi,bj)**2 |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
ENDIF |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
ELSE IF (streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
IF (float_frac_streamice(i,j,bi,bj) .eq. 1.0) THEN |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& 0.25 * dyG(i,j,bi,bj) * |
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& gravity * |
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& (streamice_density * H_streamice(i,j,bi,bj)**2 - |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg * R_low_si(i,j,bi,bj)**2) |
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#else |
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& streamice_density_ocean_avg * R_low(i,j,bi,bj)**2) |
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#endif |
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ELSE |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& 0.25 * dyG(i,j,bi,bj) * |
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& streamice_density * gravity * |
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& (1-streamice_density/streamice_density_ocean_avg) * |
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& H_streamice(i,j,bi,bj)**2 |
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END IF |
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END IF |
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! cells below |
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IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0.AND. |
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& streamice_hmask(i,j-1,bi,bj).eq.1.0) THEN |
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! geom_fac = sqrt(rA(i-1,j-1,bi,bj)*recip_rA(i,j-1,bi,bj)* |
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! & dxF(i,j-1,bi,bj)*recip_dxF(i-1,j-1,bi,bj)) |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& 0.25 * dyg(i,j-1,bi,bj) * |
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& streamice_density * gravity * |
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& (H_streamice(i,j-1,bi,bj)+ |
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& H_streamice(i-1,j-1,bi,bj)) * |
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& (surf_el_streamice(i,j-1,bi,bj)- |
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& surf_el_streamice(i-1,j-1,bi,bj)) |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& streamice_density * gravity * |
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& streamice_bg_surf_slope_x * .25 * rA(i,j-1,bi,bj) * |
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& (H_streamice(i-1,j-1,bi,bj) + H_streamice(i,j-1,bi,bj)) |
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ELSE IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0) THEN |
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IF (float_frac_streamice(i-1,j-1,bi,bj) .eq. 1.0) THEN |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
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& 0.25 * dyg(i,j-1,bi,bj) * |
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& gravity * |
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& (streamice_density * H_streamice(i-1,j-1,bi,bj)**2 - |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg*R_low_si(i-1,j-1,bi,bj)**2) |
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#else |
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& streamice_density_ocean_avg * R_low(i-1,j-1,bi,bj)**2) |
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#endif |
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dgoldberg |
1.3 |
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heimbach |
1.1 |
ELSE |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
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& 0.25 * dyg(i,j-1,bi,bj) * |
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& streamice_density * gravity * |
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& (1-streamice_density/streamice_density_ocean_avg) * |
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& H_streamice(i-1,j-1,bi,bj)**2 |
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dgoldberg |
1.3 |
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heimbach |
1.1 |
ENDIF |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
ELSE IF (streamice_hmask(i,j-1,bi,bj).eq.1.0) THEN |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
IF (float_frac_streamice(i,j-1,bi,bj) .eq. 1.0) THEN |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& 0.25 * dyg(i,j-1,bi,bj) * |
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& gravity * |
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& (streamice_density * H_streamice(i,j-1,bi,bj)**2 - |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg * R_low_si(i,j-1,bi,bj)**2) |
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#else |
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& streamice_density_ocean_avg * R_low(i,j-1,bi,bj)**2) |
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#endif |
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dgoldberg |
1.3 |
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dgoldberg |
1.6 |
ELSE |
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taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& 0.25 * dyg(i,j-1,bi,bj) * |
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& streamice_density * gravity * |
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& (1-streamice_density/streamice_density_ocean_avg) * |
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& H_streamice(i,j-1,bi,bj)**2 |
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END IF |
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END IF |
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END IF ! if umask==1 |
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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IF (streamice_vmask(i,j,bi,bj).eq.1.0) THEN |
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IF (streamice_hmask(i,j-1,bi,bj).eq.1.0.AND. |
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& streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
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! geom_fac = sqrt(rA(i,j-1,bi,bj)*recip_rA(i,j,bi,bj)* |
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! & dxF(i,j,bi,bj)*recip_dyF(i,j-1,bi,bj)) |
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taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
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& 0.25 * dxG(i,j,bi,bj) * |
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& streamice_density * gravity * |
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& (H_streamice(i,j,bi,bj)+ |
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& H_streamice(i,j-1,bi,bj)) * |
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& (surf_el_streamice(i,j,bi,bj)- |
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& surf_el_streamice(i,j-1,bi,bj)) |
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taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
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& streamice_density * gravity * |
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& streamice_bg_surf_slope_y * .25 * rA(i,j,bi,bj) * |
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& (H_streamice(i,j-1,bi,bj) + H_streamice(i,j,bi,bj)) |
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ELSE IF (streamice_hmask(i,j-1,bi,bj).eq.1.0) THEN |
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| 242 |
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IF (float_frac_streamice(i,j-1,bi,bj) .eq. 1.0) THEN |
| 243 |
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| 244 |
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taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 245 |
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& 0.25 * dxG(i,j,bi,bj) * |
| 246 |
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& gravity * |
| 247 |
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& (streamice_density * H_streamice(i,j-1,bi,bj)**2 - |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg * R_low_si(i,j-1,bi,bj)**2) |
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#else |
| 251 |
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& streamice_density_ocean_avg * R_low(i,j-1,bi,bj)**2) |
| 252 |
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#endif |
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dgoldberg |
1.3 |
|
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heimbach |
1.1 |
ELSE |
| 255 |
dgoldberg |
1.3 |
|
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dgoldberg |
1.6 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 257 |
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& 0.25 * dxG(i,j,bi,bj) * |
| 258 |
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& streamice_density * gravity * |
| 259 |
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& (1-streamice_density/streamice_density_ocean_avg) * |
| 260 |
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& H_streamice(i,j-1,bi,bj)**2 |
| 261 |
dgoldberg |
1.3 |
|
| 262 |
heimbach |
1.1 |
ENDIF |
| 263 |
dgoldberg |
1.3 |
|
| 264 |
dgoldberg |
1.6 |
ELSE IF (streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
| 265 |
dgoldberg |
1.3 |
|
| 266 |
dgoldberg |
1.6 |
IF (float_frac_streamice(i,j,bi,bj) .eq. 1.0) THEN |
| 267 |
dgoldberg |
1.3 |
|
| 268 |
dgoldberg |
1.6 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 269 |
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& 0.25 * dxG(i,j,bi,bj) * |
| 270 |
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& gravity * |
| 271 |
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& (streamice_density * H_streamice(i,j,bi,bj)**2 - |
| 272 |
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#ifdef USE_ALT_RLOW |
| 273 |
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& streamice_density_ocean_avg * R_low_si(i,j,bi,bj)**2) |
| 274 |
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#else |
| 275 |
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& streamice_density_ocean_avg * R_low(i,j,bi,bj)**2) |
| 276 |
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#endif |
| 277 |
dgoldberg |
1.3 |
|
| 278 |
heimbach |
1.1 |
ELSE |
| 279 |
dgoldberg |
1.3 |
|
| 280 |
dgoldberg |
1.6 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 281 |
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& 0.25 * dxG(i,j,bi,bj) * |
| 282 |
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& streamice_density * gravity * |
| 283 |
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& (1-streamice_density/streamice_density_ocean_avg) * |
| 284 |
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& H_streamice(i,j,bi,bj)**2 |
| 285 |
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| 286 |
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END IF |
| 287 |
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END IF |
| 288 |
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! cells to left |
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| 291 |
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IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0.AND. |
| 292 |
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& streamice_hmask(i-1,j,bi,bj).eq.1.0) THEN |
| 293 |
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| 294 |
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! geom_fac = sqrt(rA(i-1,j-1,bi,bj)*recip_rA(i-1,j,bi,bj)* |
| 295 |
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! & dxF(i-1,j,bi,bj)*recip_dxF(i-1,j-1,bi,bj)) |
| 296 |
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| 297 |
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taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 298 |
|
|
& 0.25 * dxG(i-1,j,bi,bj) * |
| 299 |
|
|
& streamice_density * gravity * |
| 300 |
|
|
& (H_streamice(i-1,j,bi,bj)+ |
| 301 |
|
|
& H_streamice(i-1,j-1,bi,bj)) * |
| 302 |
|
|
& (surf_el_streamice(i-1,j,bi,bj)- |
| 303 |
|
|
& surf_el_streamice(i-1,j-1,bi,bj)) |
| 304 |
|
|
|
| 305 |
|
|
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 306 |
|
|
& streamice_density * gravity * |
| 307 |
|
|
& streamice_bg_surf_slope_y * .25 * rA(i-1,j,bi,bj) * |
| 308 |
|
|
& (H_streamice(i-1,j-1,bi,bj) + H_streamice(i-1,j,bi,bj)) |
| 309 |
|
|
|
| 310 |
|
|
|
| 311 |
|
|
ELSE IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0) THEN |
| 312 |
|
|
|
| 313 |
|
|
IF (float_frac_streamice(i-1,j-1,bi,bj) .eq. 1.0) THEN |
| 314 |
|
|
|
| 315 |
|
|
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 316 |
|
|
& 0.25 * dxG(i-1,j,bi,bj) * |
| 317 |
|
|
& gravity * |
| 318 |
|
|
& (streamice_density * H_streamice(i-1,j-1,bi,bj)**2 - |
| 319 |
|
|
#ifdef USE_ALT_RLOW |
| 320 |
|
|
& streamice_density_ocean_avg*R_low_si(i-1,j-1,bi,bj)**2) |
| 321 |
|
|
#else |
| 322 |
|
|
& streamice_density_ocean_avg * R_low(i-1,j-1,bi,bj)**2) |
| 323 |
|
|
#endif |
| 324 |
dgoldberg |
1.3 |
|
| 325 |
heimbach |
1.1 |
ELSE |
| 326 |
dgoldberg |
1.3 |
|
| 327 |
dgoldberg |
1.6 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 328 |
|
|
& 0.25 * dxG(i-1,j,bi,bj) * |
| 329 |
|
|
& streamice_density * gravity * |
| 330 |
|
|
& (1-streamice_density/streamice_density_ocean_avg) * |
| 331 |
|
|
& H_streamice(i-1,j-1,bi,bj)**2 |
| 332 |
heimbach |
1.1 |
|
| 333 |
dgoldberg |
1.6 |
ENDIF |
| 334 |
heimbach |
1.1 |
|
| 335 |
dgoldberg |
1.6 |
ELSE IF (streamice_hmask(i-1,j,bi,bj).eq.1.0) THEN |
| 336 |
heimbach |
1.1 |
|
| 337 |
dgoldberg |
1.6 |
IF (float_frac_streamice(i-1,j,bi,bj) .eq. 1.0) THEN |
| 338 |
heimbach |
1.1 |
|
| 339 |
dgoldberg |
1.6 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 340 |
|
|
& 0.25 * dxG(i-1,j,bi,bj) * |
| 341 |
|
|
& gravity * |
| 342 |
|
|
& (streamice_density * H_streamice(i-1,j,bi,bj)**2 - |
| 343 |
dgoldberg |
1.3 |
#ifdef USE_ALT_RLOW |
| 344 |
dgoldberg |
1.6 |
& streamice_density_ocean_avg * R_low_si(i-1,j,bi,bj)**2) |
| 345 |
|
|
#else |
| 346 |
|
|
& streamice_density_ocean_avg * R_low(i-1,j,bi,bj)**2) |
| 347 |
dgoldberg |
1.3 |
#endif |
| 348 |
heimbach |
1.1 |
|
| 349 |
dgoldberg |
1.6 |
ELSE |
| 350 |
|
|
|
| 351 |
|
|
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 352 |
|
|
& 0.25 * dxG(i-1,j,bi,bj) * |
| 353 |
|
|
& streamice_density * gravity * |
| 354 |
|
|
& (1-streamice_density/streamice_density_ocean_avg) * |
| 355 |
|
|
& H_streamice(i-1,j,bi,bj)**2 |
| 356 |
|
|
|
| 357 |
|
|
END IF |
| 358 |
|
|
END IF |
| 359 |
|
|
END IF ! if vmask ==1 |
| 360 |
|
|
|
| 361 |
heimbach |
1.1 |
ENDDO |
| 362 |
|
|
ENDDO |
| 363 |
|
|
ENDDO |
| 364 |
|
|
ENDDO |
| 365 |
|
|
|
| 366 |
dgoldberg |
1.6 |
! taudx_SI (1,1,1,1) = taudx_SI (1,1,1,1) + |
| 367 |
|
|
! & streamice_v_normal_pert (1,1,1,1) |
| 368 |
|
|
|
| 369 |
heimbach |
1.1 |
|
| 370 |
|
|
|
| 371 |
|
|
#endif |
| 372 |
|
|
RETURN |
| 373 |
|
|
END |
| 374 |
|
|
|
| 375 |
|
|
|
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