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C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_driving_stress.F,v 1.9 2015/07/04 10:54:24 dgoldberg Exp $ |
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C $Name: $ |
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|
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#include "STREAMICE_OPTIONS.h" |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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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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|
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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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|
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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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|
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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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|
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#ifdef ALLOW_STREAMICE |
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|
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|
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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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_RL grd_below_sl |
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_RL sx, sy, diffx, diffy, geom_fac |
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_RL i_rhow |
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_RL avg_density |
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& (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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#ifdef STREAMICE_FIRN_CORRECTION |
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_RL firn_depth, h |
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#endif |
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|
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|
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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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#ifdef STREAMICE_FIRN_CORRECTION |
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firn_depth = streamice_density * |
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& streamice_firn_correction |
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& / (streamice_density-streamice_density_firn) |
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#endif |
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i_rhow = 1./streamice_density_ocean_avg |
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|
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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+1,sNy+OLy-1 |
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DO i=1-OLx+1,sNx+OLx-1 |
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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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#ifdef STREAMICE_FIRN_CORRECTION |
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if (STREAMICE_apply_firn_correction) then |
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if (streamice_hmask(i,j,bi,bj).eq.1) then |
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h = h_streamice(i,j,bi,bj) |
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if (h.lt.firn_depth) then |
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avg_density(i,j,bi,bj) = streamice_density_firn |
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else |
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avg_density(i,j,bi,bj) = streamice_density * |
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& (h - streamice_firn_correction) / h |
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endif |
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endif |
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else |
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#endif |
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avg_density(i,j,bi,bj) = streamice_density |
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#ifdef STREAMICE_FIRN_CORRECTION |
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endif |
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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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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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|
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DO i=1,sNx |
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DO j=1,sNy |
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|
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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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|
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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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|
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IF (streamice_umask(i,j,bi,bj).eq.1.0) THEN |
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|
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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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|
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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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|
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|
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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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& (H_streamice(i,j,bi,bj)*avg_density(i,j,bi,bj)+ |
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& H_streamice(i-1,j,bi,bj)*avg_density(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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|
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CCC |
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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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CCC |
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|
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ELSE IF (streamice_hmask(i-1,j,bi,bj).eq.1.0) THEN |
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|
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IF (float_frac_streamice(i-1,j,bi,bj) .eq. 1.0) THEN |
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|
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#ifdef USE_ALT_RLOW |
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IF (R_low_si(i-1,j,bi,bj) .lt. 0. _d 0) then |
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#else |
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IF (R_low(i-1,j,bi,bj) .lt. 0. _d 0) then |
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#endif |
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grd_below_sl = 1. _d 0 |
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else |
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grd_below_sl = 0. _d 0 |
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endif |
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|
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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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& (avg_density(i-1,j,bi,bj) * H_streamice(i-1,j,bi,bj)**2- |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg * grd_below_sl * |
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& R_low_si(i-1,j,bi,bj)**2) |
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#else |
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& streamice_density_ocean_avg * grd_below_sl * |
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& R_low(i-1,j,bi,bj)**2) |
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#endif |
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|
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ELSE |
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|
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#ifdef STREAMICE_FIRN_CORRECTION |
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|
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if (STREAMICE_apply_firn_correction) then |
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if (H_streamice(i-1,j,bi,bj).lt.firn_depth) 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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& streamice_density_firn * gravity * |
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& (1-streamice_density_firn*i_rhow) * |
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& H_streamice(i-1,j,bi,bj)**2 |
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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) * gravity * ( |
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& streamice_density_firn * firn_depth**2 + |
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& (h_streamice(i-1,j,bi,bj)-firn_depth) * |
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& (streamice_density_firn*firn_depth+streamice_density* |
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& (h_streamice(i-1,j,bi,bj)-streamice_firn_correction)) - |
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& streamice_density**2*i_rhow* |
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& (h_streamice(i-1,j,bi,bj)-streamice_firn_correction)**2 |
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& ) |
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endif |
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else |
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|
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#endif |
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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*i_rhow) * |
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& H_streamice(i-1,j,bi,bj)**2 |
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|
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#ifdef STREAMICE_FIRN_CORRECTION |
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endif |
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#endif |
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|
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ENDIF |
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|
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ELSE IF (streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
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|
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IF (float_frac_streamice(i,j,bi,bj) .eq. 1.0) THEN |
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|
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#ifdef USE_ALT_RLOW |
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IF (R_low_si(i,j,bi,bj) .lt. 0. _d 0) then |
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#else |
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IF (R_low(i,j,bi,bj) .lt. 0. _d 0) then |
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#endif |
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grd_below_sl = 1. _d 0 |
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else |
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grd_below_sl = 0. _d 0 |
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endif |
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|
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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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& (avg_density(i,j,bi,bj) * H_streamice(i,j,bi,bj)**2 - |
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#ifdef USE_ALT_RLOW |
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& streamice_density_ocean_avg * grd_below_sl * |
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& R_low_si(i,j,bi,bj)**2) |
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#else |
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& streamice_density_ocean_avg * grd_below_sl * |
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& R_low(i,j,bi,bj)**2) |
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#endif |
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|
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ELSE |
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|
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#ifdef STREAMICE_FIRN_CORRECTION |
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|
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if (STREAMICE_apply_firn_correction) then |
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if (H_streamice(i,j,bi,bj).lt.firn_depth) 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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& streamice_density_firn * gravity * |
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& (1-streamice_density_firn*i_rhow) * |
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& H_streamice(i,j,bi,bj)**2 |
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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) * gravity * ( |
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& streamice_density_firn * firn_depth**2 + |
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& (h_streamice(i,j,bi,bj)-firn_depth) * |
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& (streamice_density_firn*firn_depth+streamice_density* |
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& (h_streamice(i,j,bi,bj)-streamice_firn_correction)) - |
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& streamice_density**2*i_rhow* |
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& (h_streamice(i,j,bi,bj)-streamice_firn_correction)**2 |
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& ) |
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endif |
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else |
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|
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#endif |
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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*i_rhow) * |
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& H_streamice(i,j,bi,bj)**2 |
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#ifdef STREAMICE_FIRN_CORRECTION |
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endif |
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#endif |
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|
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|
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END IF |
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END IF |
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|
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! cells below |
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|
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IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0.AND. |
| 261 |
& streamice_hmask(i,j-1,bi,bj).eq.1.0) THEN |
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|
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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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|
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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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& (H_streamice(i,j-1,bi,bj)*avg_density(i,j-1,bi,bj)+ |
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& H_streamice(i-1,j-1,bi,bj)*avg_density(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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|
| 274 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
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& streamice_density * gravity * |
| 276 |
& 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)) |
| 278 |
|
| 279 |
ELSE IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0) THEN |
| 280 |
|
| 281 |
IF (float_frac_streamice(i-1,j-1,bi,bj) .eq. 1.0) THEN |
| 282 |
|
| 283 |
#ifdef USE_ALT_RLOW |
| 284 |
IF (R_low_si(i-1,j-1,bi,bj) .lt. 0. _d 0) then |
| 285 |
#else |
| 286 |
IF (R_low(i-1,j-1,bi,bj) .lt. 0. _d 0) then |
| 287 |
#endif |
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grd_below_sl = 1. _d 0 |
| 289 |
else |
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grd_below_sl = 0. _d 0 |
| 291 |
endif |
| 292 |
|
| 293 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
| 294 |
& 0.25 * dyg(i,j-1,bi,bj) * |
| 295 |
& gravity * |
| 296 |
& (avg_density(i-1,j-1,bi,bj)*H_streamice(i-1,j-1,bi,bj)**2- |
| 297 |
#ifdef USE_ALT_RLOW |
| 298 |
& streamice_density_ocean_avg*grd_below_sl * |
| 299 |
& R_low_si(i-1,j-1,bi,bj)**2) |
| 300 |
#else |
| 301 |
& streamice_density_ocean_avg * grd_below_sl * |
| 302 |
& R_low(i-1,j-1,bi,bj)**2) |
| 303 |
#endif |
| 304 |
|
| 305 |
ELSE |
| 306 |
|
| 307 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 308 |
|
| 309 |
if (STREAMICE_apply_firn_correction) then |
| 310 |
if (H_streamice(i-1,j-1,bi,bj).lt.firn_depth) then |
| 311 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
| 312 |
& 0.25 * dyG(i,j-1,bi,bj) * |
| 313 |
& streamice_density_firn * gravity * |
| 314 |
& (1-streamice_density_firn*i_rhow) * |
| 315 |
& H_streamice(i-1,j-1,bi,bj)**2 |
| 316 |
else |
| 317 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
| 318 |
& 0.25 * dyG(i,j-1,bi,bj) * gravity * ( |
| 319 |
& streamice_density_firn * firn_depth**2 + |
| 320 |
& (h_streamice(i-1,j-1,bi,bj)-firn_depth) * |
| 321 |
& (streamice_density_firn*firn_depth+streamice_density* |
| 322 |
& (h_streamice(i-1,j-1,bi,bj)-streamice_firn_correction))- |
| 323 |
& streamice_density**2*i_rhow* |
| 324 |
& (h_streamice(i-1,j-1,bi,bj)-streamice_firn_correction)**2 |
| 325 |
& ) |
| 326 |
endif |
| 327 |
else |
| 328 |
|
| 329 |
#endif |
| 330 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) + |
| 331 |
& 0.25 * dyG(i,j-1,bi,bj) * |
| 332 |
& streamice_density * gravity * |
| 333 |
& (1-streamice_density*i_rhow) * |
| 334 |
& H_streamice(i-1,j-1,bi,bj)**2 |
| 335 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 336 |
endif |
| 337 |
#endif |
| 338 |
|
| 339 |
|
| 340 |
|
| 341 |
ENDIF |
| 342 |
|
| 343 |
ELSE IF (streamice_hmask(i,j-1,bi,bj).eq.1.0) THEN |
| 344 |
|
| 345 |
IF (float_frac_streamice(i,j-1,bi,bj) .eq. 1.0) THEN |
| 346 |
|
| 347 |
#ifdef USE_ALT_RLOW |
| 348 |
IF (R_low_si(i,j-1,bi,bj) .lt. 0. _d 0) then |
| 349 |
#else |
| 350 |
IF (R_low(i,j-1,bi,bj) .lt. 0. _d 0) then |
| 351 |
#endif |
| 352 |
grd_below_sl = 1. _d 0 |
| 353 |
else |
| 354 |
grd_below_sl = 0. _d 0 |
| 355 |
endif |
| 356 |
|
| 357 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
| 358 |
& 0.25 * dyg(i,j-1,bi,bj) * |
| 359 |
& gravity * |
| 360 |
& (avg_density(i,j-1,bi,bj) * H_streamice(i,j-1,bi,bj)**2 - |
| 361 |
#ifdef USE_ALT_RLOW |
| 362 |
& streamice_density_ocean_avg * grd_below_sl * |
| 363 |
& R_low_si(i,j-1,bi,bj)**2) |
| 364 |
#else |
| 365 |
& streamice_density_ocean_avg * grd_below_sl * |
| 366 |
& R_low(i,j-1,bi,bj)**2) |
| 367 |
#endif |
| 368 |
|
| 369 |
ELSE |
| 370 |
|
| 371 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 372 |
if (STREAMICE_apply_firn_correction) then |
| 373 |
if (H_streamice(i,j-1,bi,bj).lt.firn_depth) then |
| 374 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
| 375 |
& 0.25 * dyG(i,j-1,bi,bj) * |
| 376 |
& streamice_density_firn * gravity * |
| 377 |
& (1-streamice_density_firn*i_rhow) * |
| 378 |
& H_streamice(i,j-1,bi,bj)**2 |
| 379 |
else |
| 380 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
| 381 |
& 0.25 * dyG(i,j-1,bi,bj) * gravity * ( |
| 382 |
& streamice_density_firn * firn_depth**2 + |
| 383 |
& (h_streamice(i,j-1,bi,bj)-firn_depth) * |
| 384 |
& (streamice_density_firn*firn_depth+streamice_density* |
| 385 |
& (h_streamice(i,j-1,bi,bj)-streamice_firn_correction))- |
| 386 |
& streamice_density**2*i_rhow* |
| 387 |
& (h_streamice(i,j-1,bi,bj)-streamice_firn_correction)**2 |
| 388 |
& ) |
| 389 |
endif |
| 390 |
else |
| 391 |
|
| 392 |
#endif |
| 393 |
taudx_si(i,j,bi,bj) = taudx_si(i,j,bi,bj) - |
| 394 |
& 0.25 * dyG(i,j-1,bi,bj) * |
| 395 |
& streamice_density * gravity * |
| 396 |
& (1-streamice_density*i_rhow) * |
| 397 |
& H_streamice(i,j-1,bi,bj)**2 |
| 398 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 399 |
endif |
| 400 |
#endif |
| 401 |
|
| 402 |
|
| 403 |
END IF |
| 404 |
END IF |
| 405 |
END IF ! if umask==1 |
| 406 |
|
| 407 |
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
| 408 |
|
| 409 |
IF (streamice_vmask(i,j,bi,bj).eq.1.0) THEN |
| 410 |
|
| 411 |
IF (streamice_hmask(i,j-1,bi,bj).eq.1.0.AND. |
| 412 |
& streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
| 413 |
|
| 414 |
! geom_fac = sqrt(rA(i,j-1,bi,bj)*recip_rA(i,j,bi,bj)* |
| 415 |
! & dxF(i,j,bi,bj)*recip_dyF(i,j-1,bi,bj)) |
| 416 |
|
| 417 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 418 |
& 0.25 * dxG(i,j,bi,bj) * |
| 419 |
& gravity * |
| 420 |
& (H_streamice(i,j,bi,bj)*avg_density(i,j,bi,bj)+ |
| 421 |
& H_streamice(i,j-1,bi,bj)*avg_density(i,j-1,bi,bj))* |
| 422 |
& (surf_el_streamice(i,j,bi,bj)- |
| 423 |
& surf_el_streamice(i,j-1,bi,bj)) |
| 424 |
|
| 425 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 426 |
& streamice_density * gravity * |
| 427 |
& streamice_bg_surf_slope_y * .25 * rA(i,j,bi,bj) * |
| 428 |
& (H_streamice(i,j-1,bi,bj) + H_streamice(i,j,bi,bj)) |
| 429 |
|
| 430 |
ELSE IF (streamice_hmask(i,j-1,bi,bj).eq.1.0) THEN |
| 431 |
|
| 432 |
IF (float_frac_streamice(i,j-1,bi,bj) .eq. 1.0) THEN |
| 433 |
|
| 434 |
#ifdef USE_ALT_RLOW |
| 435 |
IF (R_low_si(i,j-1,bi,bj) .lt. 0. _d 0) then |
| 436 |
#else |
| 437 |
IF (R_low(i,j-1,bi,bj) .lt. 0. _d 0) then |
| 438 |
#endif |
| 439 |
grd_below_sl = 1. _d 0 |
| 440 |
else |
| 441 |
grd_below_sl = 0. _d 0 |
| 442 |
endif |
| 443 |
|
| 444 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 445 |
& 0.25 * dxG(i,j,bi,bj) * |
| 446 |
& gravity * |
| 447 |
& (avg_density(i,j-1,bi,bj) * H_streamice(i,j-1,bi,bj)**2 - |
| 448 |
#ifdef USE_ALT_RLOW |
| 449 |
& streamice_density_ocean_avg * grd_below_sl * |
| 450 |
& R_low_si(i,j-1,bi,bj)**2) |
| 451 |
#else |
| 452 |
& streamice_density_ocean_avg * grd_below_sl * |
| 453 |
& R_low(i,j-1,bi,bj)**2) |
| 454 |
#endif |
| 455 |
|
| 456 |
ELSE |
| 457 |
|
| 458 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 459 |
if (STREAMICE_apply_firn_correction) then |
| 460 |
if (H_streamice(i,j-1,bi,bj).lt.firn_depth) then |
| 461 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 462 |
& 0.25 * dxG(i,j,bi,bj) * |
| 463 |
& streamice_density_firn * gravity * |
| 464 |
& (1-streamice_density_firn*i_rhow) * |
| 465 |
& H_streamice(i,j-1,bi,bj)**2 |
| 466 |
else |
| 467 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 468 |
& 0.25 * dxG(i,j,bi,bj) * gravity * ( |
| 469 |
& streamice_density_firn * firn_depth**2 + |
| 470 |
& (h_streamice(i,j-1,bi,bj)-firn_depth) * |
| 471 |
& (streamice_density_firn*firn_depth+streamice_density* |
| 472 |
& (h_streamice(i,j-1,bi,bj)-streamice_firn_correction))- |
| 473 |
& streamice_density**2*i_rhow* |
| 474 |
& (h_streamice(i,j-1,bi,bj)-streamice_firn_correction)**2 |
| 475 |
& ) |
| 476 |
endif |
| 477 |
else |
| 478 |
|
| 479 |
#endif |
| 480 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 481 |
& 0.25 * dxG(i,j,bi,bj) * |
| 482 |
& streamice_density * gravity * |
| 483 |
& (1-streamice_density*i_rhow) * |
| 484 |
& H_streamice(i,j-1,bi,bj)**2 |
| 485 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 486 |
endif |
| 487 |
#endif |
| 488 |
|
| 489 |
|
| 490 |
ENDIF |
| 491 |
|
| 492 |
ELSE IF (streamice_hmask(i,j,bi,bj).eq.1.0) THEN |
| 493 |
|
| 494 |
IF (float_frac_streamice(i,j,bi,bj) .eq. 1.0) THEN |
| 495 |
|
| 496 |
#ifdef USE_ALT_RLOW |
| 497 |
IF (R_low_si(i,j,bi,bj) .lt. 0. _d 0) then |
| 498 |
#else |
| 499 |
IF (R_low(i,j,bi,bj) .lt. 0. _d 0) then |
| 500 |
#endif |
| 501 |
grd_below_sl = 1. _d 0 |
| 502 |
else |
| 503 |
grd_below_sl = 0. _d 0 |
| 504 |
endif |
| 505 |
|
| 506 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 507 |
& 0.25 * dxG(i,j,bi,bj) * |
| 508 |
& gravity * |
| 509 |
& (avg_density(i,j,bi,bj) * H_streamice(i,j,bi,bj)**2 - |
| 510 |
#ifdef USE_ALT_RLOW |
| 511 |
& streamice_density_ocean_avg * grd_below_sl * |
| 512 |
& R_low_si(i,j,bi,bj)**2) |
| 513 |
#else |
| 514 |
& streamice_density_ocean_avg * grd_below_sl * |
| 515 |
& R_low(i,j,bi,bj)**2) |
| 516 |
#endif |
| 517 |
|
| 518 |
ELSE |
| 519 |
|
| 520 |
|
| 521 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 522 |
if (STREAMICE_apply_firn_correction) then |
| 523 |
if (H_streamice(i,j,bi,bj).lt.firn_depth) then |
| 524 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 525 |
& 0.25 * dxG(i,j,bi,bj) * |
| 526 |
& streamice_density_firn * gravity * |
| 527 |
& (1-streamice_density_firn*i_rhow) * |
| 528 |
& H_streamice(i,j,bi,bj)**2 |
| 529 |
else |
| 530 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 531 |
& 0.25 * dxG(i,j,bi,bj) * gravity * ( |
| 532 |
& streamice_density_firn * firn_depth**2 + |
| 533 |
& (h_streamice(i,j,bi,bj)-firn_depth) * |
| 534 |
& (streamice_density_firn*firn_depth+streamice_density* |
| 535 |
& (h_streamice(i,j,bi,bj)-streamice_firn_correction))- |
| 536 |
& streamice_density**2*i_rhow* |
| 537 |
& (h_streamice(i,j,bi,bj)-streamice_firn_correction)**2 |
| 538 |
& ) |
| 539 |
endif |
| 540 |
else |
| 541 |
|
| 542 |
#endif |
| 543 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 544 |
& 0.25 * dxG(i,j,bi,bj) * |
| 545 |
& streamice_density * gravity * |
| 546 |
& (1-streamice_density*i_rhow) * |
| 547 |
& H_streamice(i,j,bi,bj)**2 |
| 548 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 549 |
endif |
| 550 |
#endif |
| 551 |
|
| 552 |
|
| 553 |
END IF |
| 554 |
END IF |
| 555 |
|
| 556 |
! cells to left |
| 557 |
|
| 558 |
IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0.AND. |
| 559 |
& streamice_hmask(i-1,j,bi,bj).eq.1.0) THEN |
| 560 |
|
| 561 |
! geom_fac = sqrt(rA(i-1,j-1,bi,bj)*recip_rA(i-1,j,bi,bj)* |
| 562 |
! & dxF(i-1,j,bi,bj)*recip_dxF(i-1,j-1,bi,bj)) |
| 563 |
|
| 564 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 565 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 566 |
& gravity * |
| 567 |
& (H_streamice(i-1,j,bi,bj)*avg_density(i-1,j,bi,bj)+ |
| 568 |
& H_streamice(i-1,j-1,bi,bj)*avg_density(i-1,j-1,bi,bj))* |
| 569 |
& (surf_el_streamice(i-1,j,bi,bj)- |
| 570 |
& surf_el_streamice(i-1,j-1,bi,bj)) |
| 571 |
|
| 572 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 573 |
& streamice_density * gravity * |
| 574 |
& streamice_bg_surf_slope_y * .25 * rA(i-1,j,bi,bj) * |
| 575 |
& (H_streamice(i-1,j-1,bi,bj) + H_streamice(i-1,j,bi,bj)) |
| 576 |
|
| 577 |
|
| 578 |
ELSE IF (streamice_hmask(i-1,j-1,bi,bj).eq.1.0) THEN |
| 579 |
|
| 580 |
IF (float_frac_streamice(i-1,j-1,bi,bj) .eq. 1.0) THEN |
| 581 |
|
| 582 |
#ifdef USE_ALT_RLOW |
| 583 |
IF (R_low_si(i-1,j-1,bi,bj) .lt. 0. _d 0) then |
| 584 |
#else |
| 585 |
IF (R_low(i-1,j-1,bi,bj) .lt. 0. _d 0) then |
| 586 |
#endif |
| 587 |
grd_below_sl = 1. _d 0 |
| 588 |
else |
| 589 |
grd_below_sl = 0. _d 0 |
| 590 |
endif |
| 591 |
|
| 592 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 593 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 594 |
& gravity * |
| 595 |
& (avg_density(i-1,j-1,bi,bj)*H_streamice(i-1,j-1,bi,bj)**2- |
| 596 |
#ifdef USE_ALT_RLOW |
| 597 |
& streamice_density_ocean_avg*grd_below_sl * |
| 598 |
& R_low_si(i-1,j-1,bi,bj)**2) |
| 599 |
#else |
| 600 |
& streamice_density_ocean_avg * grd_below_sl * |
| 601 |
& R_low(i-1,j-1,bi,bj)**2) |
| 602 |
#endif |
| 603 |
|
| 604 |
ELSE |
| 605 |
|
| 606 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 607 |
if (STREAMICE_apply_firn_correction) then |
| 608 |
if (H_streamice(i-1,j-1,bi,bj).lt.firn_depth) then |
| 609 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 610 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 611 |
& streamice_density_firn * gravity * |
| 612 |
& (1-streamice_density_firn*i_rhow) * |
| 613 |
& H_streamice(i-1,j-1,bi,bj)**2 |
| 614 |
else |
| 615 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 616 |
& 0.25 * dxG(i-1,j,bi,bj) * gravity * ( |
| 617 |
& streamice_density_firn * firn_depth**2 + |
| 618 |
& (h_streamice(i-1,j-1,bi,bj)-firn_depth) * |
| 619 |
& (streamice_density_firn*firn_depth+streamice_density* |
| 620 |
& (h_streamice(i-1,j-1,bi,bj)-streamice_firn_correction))- |
| 621 |
& streamice_density**2*i_rhow* |
| 622 |
& (h_streamice(i-1,j-1,bi,bj)-streamice_firn_correction)**2 |
| 623 |
& ) |
| 624 |
endif |
| 625 |
else |
| 626 |
#endif |
| 627 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) + |
| 628 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 629 |
& streamice_density * gravity * |
| 630 |
& (1-streamice_density*i_rhow) * |
| 631 |
& H_streamice(i-1,j-1,bi,bj)**2 |
| 632 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 633 |
endif |
| 634 |
#endif |
| 635 |
|
| 636 |
|
| 637 |
|
| 638 |
ENDIF |
| 639 |
|
| 640 |
ELSE IF (streamice_hmask(i-1,j,bi,bj).eq.1.0) THEN |
| 641 |
|
| 642 |
IF (float_frac_streamice(i-1,j,bi,bj) .eq. 1.0) THEN |
| 643 |
|
| 644 |
#ifdef USE_ALT_RLOW |
| 645 |
IF (R_low_si(i-1,j,bi,bj) .lt. 0. _d 0) then |
| 646 |
#else |
| 647 |
IF (R_low(i-1,j,bi,bj) .lt. 0. _d 0) then |
| 648 |
#endif |
| 649 |
grd_below_sl = 1. _d 0 |
| 650 |
else |
| 651 |
grd_below_sl = 0. _d 0 |
| 652 |
endif |
| 653 |
|
| 654 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 655 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 656 |
& gravity * |
| 657 |
& (avg_density(i-1,j,bi,bj) * H_streamice(i-1,j,bi,bj)**2 - |
| 658 |
#ifdef USE_ALT_RLOW |
| 659 |
& streamice_density_ocean_avg * grd_below_sl * |
| 660 |
& R_low_si(i-1,j,bi,bj)**2) |
| 661 |
#else |
| 662 |
& streamice_density_ocean_avg * grd_below_sl * |
| 663 |
& R_low(i-1,j,bi,bj)**2) |
| 664 |
#endif |
| 665 |
|
| 666 |
ELSE |
| 667 |
|
| 668 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 669 |
if (STREAMICE_apply_firn_correction) then |
| 670 |
if (H_streamice(i-1,j,bi,bj).lt.firn_depth) then |
| 671 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 672 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 673 |
& streamice_density_firn * gravity * |
| 674 |
& (1-streamice_density_firn*i_rhow) * |
| 675 |
& H_streamice(i-1,j,bi,bj)**2 |
| 676 |
else |
| 677 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 678 |
& 0.25 * dxG(i-1,j,bi,bj) * gravity * ( |
| 679 |
& streamice_density_firn * firn_depth**2 + |
| 680 |
& (h_streamice(i-1,j,bi,bj)-firn_depth) * |
| 681 |
& (streamice_density_firn*firn_depth+streamice_density* |
| 682 |
& (h_streamice(i-1,j,bi,bj)-streamice_firn_correction))- |
| 683 |
& streamice_density**2*i_rhow* |
| 684 |
& (h_streamice(i-1,j,bi,bj)-streamice_firn_correction)**2 |
| 685 |
& ) |
| 686 |
endif |
| 687 |
else |
| 688 |
#endif |
| 689 |
taudy_si(i,j,bi,bj) = taudy_si(i,j,bi,bj) - |
| 690 |
& 0.25 * dxG(i-1,j,bi,bj) * |
| 691 |
& streamice_density * gravity * |
| 692 |
& (1-streamice_density*i_rhow) * |
| 693 |
& H_streamice(i-1,j,bi,bj)**2 |
| 694 |
#ifdef STREAMICE_FIRN_CORRECTION |
| 695 |
endif |
| 696 |
#endif |
| 697 |
|
| 698 |
|
| 699 |
END IF |
| 700 |
END IF |
| 701 |
END IF ! if vmask ==1 |
| 702 |
|
| 703 |
ENDDO |
| 704 |
ENDDO |
| 705 |
ENDDO |
| 706 |
ENDDO |
| 707 |
|
| 708 |
! taudx_SI (1,1,1,1) = taudx_SI (1,1,1,1) + |
| 709 |
! & streamice_v_normal_pert (1,1,1,1) |
| 710 |
! call write_fld_xy_rl("TAUDX_SI","",taudx_si,0,mythid) |
| 711 |
! call write_fld_xy_rl("TAUDY_SI","",taudy_si,0,mythid) |
| 712 |
|
| 713 |
|
| 714 |
|
| 715 |
#endif |
| 716 |
RETURN |
| 717 |
END |
| 718 |
|
| 719 |
|
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