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C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_upd_ffrac_uncoupled.F,v 1.3 2015/06/30 11:20:05 dgoldberg Exp $ |
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C $Name: $ |
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C this needs changes |
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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 0 |
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SUBROUTINE STREAMICE_UPD_FFRAC_UNCOUPLED ( myThid ) |
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C !DESCRIPTION: |
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C Initialize STREAMICE variables and constants. |
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C !USES: |
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IMPLICIT NONE |
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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 "STREAMICE.h" |
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#include "GRID.h" |
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C !INPUT PARAMETERS: |
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INTEGER myThid |
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CEOP |
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#ifdef ALLOW_STREAMICE |
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INTEGER bi, bj, i, j |
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_RL OD, rhoi, rhow, delta, r, h, hf, i_r, rlo |
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#ifdef STREAMICE_SMOOTH_FLOATATION |
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_RL ETA_GL_STREAMICE |
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external ETA_GL_STREAMICE |
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_RL PHI_GL_STREAMICE |
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external PHI_GL_STREAMICE |
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#endif |
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#ifdef STREAMICE_FIRN_CORRECTION |
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_RL firn_depth |
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#endif |
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rhoi = streamice_density |
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rhow = streamice_density_ocean_avg |
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r=rhoi/rhow |
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i_r = 1/r |
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delta=1-r |
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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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#ifdef STREAMICE_SMOOTH_FLOATATION |
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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 .or. |
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& STREAMICE_hmask(i,j,bi,bj).eq.2.0) THEN |
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if (STREAMICE_hmask(i,j,bi,bj).eq.1.0 .or. |
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& STREAMICE_hmask(i,j,bi,bj).eq.2.0) THEN |
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h = H_streamice(i,j,bi,bj) |
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# ifdef USE_ALT_RLOW |
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hf = -1.0 * i_r * R_low_si (i,j,bi,bj) |
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# else |
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hf = -1.0 * i_r * R_low (i,j,bi,bj) |
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# endif |
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surf_el_streamice(i,j,bi,bj) = |
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& ETA_GL_STREAMICE ( |
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& h-hf, |
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& delta, |
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& 1. _d 0, |
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& delta*hf, |
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& streamice_smooth_gl_width) |
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|
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base_el_streamice(i,j,bi,bj) = |
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& surf_el_streamice(i,j,bi,bj) - h |
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float_frac_streamice(i,j,bi,bj) = |
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& PHI_GL_STREAMICE ( |
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& h-hf, |
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& streamice_smooth_gl_width) |
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|
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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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#else |
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! STREAMICE_SMOOTH_FLOATATION |
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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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# ifdef USE_ALT_RLOW |
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rlo = R_low_si (i,j,bi,bj) |
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# else |
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rlo = R_low (i,j,bi,bj) |
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#endif |
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|
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#ifdef STREAMICE_FIRN_CORRECTION |
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if (STREAMICE_apply_firn_correction) then |
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! h=h_streamice(i,j,bi,bj) |
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if (h_streamice(i,j,bi,bj).lt.firn_depth) then |
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OD = -1.0 * rlo - streamice_density_firn/rhow * |
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& h_streamice(i,j,bi,bj) |
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else |
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OD = -1.0 * rlo - rhoi/rhow * |
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& (h_streamice(i,j,bi,bj)-streamice_firn_correction) |
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endif |
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else |
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#endif |
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OD = -1.0 * Rlo - |
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& H_streamice(i,j,bi,bj) * rhoi/rhow |
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#ifdef STREAMICE_FIRN_CORRECTION |
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endif |
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#endif |
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IF (OD .ge. 0. _d 0) THEN |
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c ice thickness does not take up whole ocean column -> floating |
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float_frac_streamice(i,j,bi,bj) = 0.0 |
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base_el_streamice(i,j,bi,bj) = Rlo+OD |
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#ifdef STREAMICE_FIRN_CORRECTION |
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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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surf_el_streamice(i,j,bi,bj) = |
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& (1-streamice_density_firn/rhow)*h_streamice(i,j,bi,bj) |
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else |
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surf_el_streamice(i,j,bi,bj) = |
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& (1-rhoi/rhow)*h_streamice(i,j,bi,bj) + |
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& rhoi/rhow*streamice_firn_correction |
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endif |
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else |
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#endif |
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surf_el_streamice(i,j,bi,bj) = |
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& (1-rhoi/rhow)*H_streamice(i,j,bi,bj) |
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#ifdef STREAMICE_FIRN_CORRECTION |
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endif |
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#endif |
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ELSE |
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float_frac_streamice(i,j,bi,bj) = 1.0 |
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base_el_streamice(i,j,bi,bj) = Rlo |
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surf_el_streamice(i,j,bi,bj) = Rlo |
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& + H_streamice(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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#endif |
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_EXCH_XY_RL(float_frac_streamice, myThid ) |
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_EXCH_XY_RL(base_el_streamice, myThid ) |
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_EXCH_XY_RL(surf_el_streamice, myThid ) |
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#endif /* ALLOW_STREAMICE */ |
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RETURN |
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END |
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