| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/dic/car_flux.F,v 1.13 2010/08/02 10:32:13 mlosch Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "DIC_OPTIONS.h" |
| 5 |
|
| 6 |
CBOP |
| 7 |
C !ROUTINE: CAR_FLUX |
| 8 |
|
| 9 |
C !INTERFACE: ========================================================== |
| 10 |
SUBROUTINE CAR_FLUX( CAR_S, cflux, |
| 11 |
I bi,bj,imin,imax,jmin,jmax, |
| 12 |
I myIter,myTime,myThid) |
| 13 |
|
| 14 |
C !DESCRIPTION: |
| 15 |
C Calculate carbonate fluxes |
| 16 |
|
| 17 |
C !USES: =============================================================== |
| 18 |
IMPLICIT NONE |
| 19 |
#include "SIZE.h" |
| 20 |
#include "DYNVARS.h" |
| 21 |
#include "EEPARAMS.h" |
| 22 |
#include "PARAMS.h" |
| 23 |
#include "GRID.h" |
| 24 |
#include "DIC_VARS.h" |
| 25 |
|
| 26 |
C !INPUT PARAMETERS: =================================================== |
| 27 |
C myThid :: thread number |
| 28 |
C myIter :: current timestep |
| 29 |
C myTime :: current time |
| 30 |
C CAR_S :: carbonate source |
| 31 |
INTEGER myIter |
| 32 |
_RL myTime |
| 33 |
INTEGER myThid |
| 34 |
_RL CAR_S(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
| 35 |
INTEGER imin, imax, jmin, jmax, bi, bj |
| 36 |
|
| 37 |
C !OUTPUT PARAMETERS: =================================================== |
| 38 |
C cflux :: carbonate flux |
| 39 |
_RL cflux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
| 40 |
|
| 41 |
#if (defined ALLOW_PTRACERS && defined DIC_BIOTIC) |
| 42 |
|
| 43 |
C !LOCAL VARIABLES: ==================================================== |
| 44 |
C i,j,k :: loop indices |
| 45 |
c ko :: loop-within-loop index |
| 46 |
c caexport :: flux of carbonate from base each "productive" |
| 47 |
c layer |
| 48 |
c depth_l :: depth and lower interface |
| 49 |
c flux_u, flux_l :: flux through upper and lower interfaces |
| 50 |
c reminFac :: abbreviation |
| 51 |
c zbase :: depth of bottom of current productive layer |
| 52 |
INTEGER I,J,k, ko, kop1 |
| 53 |
_RL maskp1 |
| 54 |
_RL zbase |
| 55 |
_RL caexport(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 56 |
_RL reminFac |
| 57 |
_RL depth_l |
| 58 |
_RL flux_u (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 59 |
_RL flux_l |
| 60 |
CEOP |
| 61 |
|
| 62 |
C- Calculate carbonate flux from base of each layer |
| 63 |
DO k=1,nlev |
| 64 |
DO j=jmin,jmax |
| 65 |
DO i=imin,imax |
| 66 |
caexport(i,j) = 0. _d 0 |
| 67 |
IF (hFacC(i,j,k,bi,bj).GT.0. _d 0) THEN |
| 68 |
C-- If no layer below initial layer (because of bottom or |
| 69 |
C-- topography), then remineralize in here |
| 70 |
IF (k.EQ.Nr) THEN |
| 71 |
cflux(i,j,k)=cflux(i,j,k) + CAR_S(i,j,k) |
| 72 |
ELSEIF (hFacC(i,j,k+1,bi,bj).EQ.0. _d 0) THEN |
| 73 |
cflux(i,j,k)=cflux(i,j,k) + CAR_S(i,j,k) |
| 74 |
ELSE |
| 75 |
C- flux out of layer k |
| 76 |
caexport(i,j) = CAR_S(i,j,k)*drF(k) * _hFacC(i,j,k,bi,bj) |
| 77 |
ENDIF |
| 78 |
ENDIF |
| 79 |
ENDDO |
| 80 |
ENDDO |
| 81 |
C-- If availabe, flux carbon export downward; |
| 82 |
C-- calculate flux to each layer from base of k |
| 83 |
zbase=-rF(k+1) |
| 84 |
C-- Upper flux |
| 85 |
DO j=jmin,jmax |
| 86 |
DO i=imin,imax |
| 87 |
flux_u(i,j) = caexport(i,j) |
| 88 |
ENDDO |
| 89 |
ENDDO |
| 90 |
DO ko=k+1,Nr |
| 91 |
kop1 = MIN(Nr,ko+1) |
| 92 |
maskp1 = 1. _d 0 |
| 93 |
IF (ko.GE.Nr) maskp1 = 0. _d 0 |
| 94 |
#ifndef NONLIN_FRSRURF |
| 95 |
C For the linear free surface, hFacC can be omitted, buying another |
| 96 |
C performance increase of a factor of six on a vector computer. |
| 97 |
C For now this is not implemented via run time flags, in order to |
| 98 |
C avoid making this code too complicated. |
| 99 |
depth_l = -rF(ko) + drF(ko) |
| 100 |
reminFac = exp(-(depth_l-zbase)/zca) |
| 101 |
#endif |
| 102 |
DO j=jmin,jmax |
| 103 |
DO i=imin,imax |
| 104 |
IF ( caexport(i,j) .NE. 0. _d 0 ) THEN |
| 105 |
C-- Lower flux (no flux to ocean bottom) |
| 106 |
#ifdef NONLIN_FRSRURF |
| 107 |
depth_l = -rF(ko) + drF(ko) * _hFacC(i,j,ko,bi,bj) |
| 108 |
reminFac = exp(-(depth_l-zbase)/zca) |
| 109 |
#endif |
| 110 |
flux_l = caexport(i,j)*reminFac |
| 111 |
& *maskp1*maskC(i,j,kop1,bi,bj) |
| 112 |
|
| 113 |
cflux(i,j,ko)=cflux(i,j,ko) + (flux_u(i,j)-flux_l) |
| 114 |
& *recip_drF(ko)*recip_hFacC(i,j,ko,bi,bj) |
| 115 |
C-- Store flux through upper layer for the next k-level |
| 116 |
flux_u(i,j) = flux_l |
| 117 |
|
| 118 |
C endif carexport .ne. 0 |
| 119 |
ENDIF |
| 120 |
C i,j-loops |
| 121 |
ENDDO |
| 122 |
ENDDO |
| 123 |
C ko-loop |
| 124 |
ENDDO |
| 125 |
C k-loop |
| 126 |
ENDDO |
| 127 |
c |
| 128 |
#endif /* defined ALLOW_PTRACERS && defined DIC_BIOTIC */ |
| 129 |
RETURN |
| 130 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph