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#include "DIC_OPTIONS.h" |
#include "DIC_OPTIONS.h" |
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#include "PTRACERS_OPTIONS.h" |
#include "PTRACERS_OPTIONS.h" |
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#include "GCHEM_OPTIONS.h" |
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CBOP |
CBOP |
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C !ROUTINE: DIC_SURFFORCING |
C !ROUTINE: DIC_SURFFORCING |
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C !INTERFACE: ========================================================== |
C !INTERFACE: ========================================================== |
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SUBROUTINE DIC_SURFFORCING( PTR_CO2 , PTR_ALK, PTR_PO4, GDC, |
SUBROUTINE DIC_SURFFORCING( PTR_CO2 , PTR_ALK, PTR_PO4, GDC, |
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I bi,bj,imin,imax,jmin,jmax, |
I bi,bj,imin,imax,jmin,jmax, |
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I myIter,myTime,myThid) |
I myIter,myTime,myThid) |
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C !DESCRIPTION: |
C !DESCRIPTION: |
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C Calculate the carbon air-sea flux terms |
C Calculate the carbon air-sea flux terms |
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C following external_forcing_dic.F (OCMIP run) from Mick |
C following external_forcing_dic.F (OCMIP run) from Mick |
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C !USES: =============================================================== |
C !USES: =============================================================== |
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IMPLICIT NONE |
IMPLICIT NONE |
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#include "PARAMS.h" |
#include "PARAMS.h" |
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#include "GRID.h" |
#include "GRID.h" |
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#include "FFIELDS.h" |
#include "FFIELDS.h" |
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#include "DIC_ABIOTIC.h" |
#include "DIC_VARS.h" |
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C !INPUT PARAMETERS: =================================================== |
C !INPUT PARAMETERS: =================================================== |
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C myThid :: thread number |
C myThid :: thread number |
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#ifdef ALLOW_PTRACERS |
#ifdef ALLOW_PTRACERS |
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C !LOCAL VARIABLES: ==================================================== |
C !LOCAL VARIABLES: ==================================================== |
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INTEGER I,J, kLev, it |
INTEGER i,j, kLev |
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C Number of iterations for pCO2 solvers... |
C Number of iterations for pCO2 solvers... |
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C Solubility relation coefficients |
C Solubility relation coefficients |
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_RL SchmidtNoDIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL SchmidtNoDIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL pCO2sat(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL pCO2sat(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL Kwexch(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL Kwexch(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL pisvel(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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C local variables for carbon chem |
C local variables for carbon chem |
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_RL surfalk(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL surfalk(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL surfphos(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL surfphos(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL surfsi(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL surfsi(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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#ifdef ALLOW_OLD_VIRTUALFLUX |
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_RL VirtualFlux(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL VirtualFlux(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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#endif |
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CEOP |
CEOP |
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cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc |
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc |
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kLev=1 |
kLev=1 |
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C PRE-INDUSTRIAL STEADY STATE pCO2 = 278.0 ppmv |
cc if coupled to atmsopheric model, use the |
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DO j=1-OLy,sNy+OLy |
cc Co2 value passed from the coupler |
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DO i=1-OLx,sNx+OLx |
c#ifndef USE_ATMOSCO2 |
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AtmospCO2(i,j,bi,bj)=278.0d-6 |
cC PRE-INDUSTRIAL STEADY STATE pCO2 = 278.0 ppmv |
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ENDDO |
c DO j=1-OLy,sNy+OLy |
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ENDDO |
c DO i=1-OLx,sNx+OLx |
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c AtmospCO2(i,j,bi,bj)=278.0 _d -6 |
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c ENDDO |
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c ENDDO |
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c#endif |
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C ================================================================= |
C ================================================================= |
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surfphos(i,j) = PTR_PO4(i,j,klev) |
surfphos(i,j) = PTR_PO4(i,j,klev) |
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& * maskC(i,j,kLev,bi,bj) |
& * maskC(i,j,kLev,bi,bj) |
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#else |
#else |
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surfalk(i,j) = 2.366595 * salt(i,j,kLev,bi,bj)/gsm_s |
surfalk(i,j) = 2.366595 _d 0 * salt(i,j,kLev,bi,bj)/gsm_s |
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& * maskC(i,j,kLev,bi,bj) |
& * maskC(i,j,kLev,bi,bj) |
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surfphos(i,j) = 5.1225e-4 * maskC(i,j,kLev,bi,bj) |
surfphos(i,j) = 5.1225 _d -4 * maskC(i,j,kLev,bi,bj) |
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#endif |
#endif |
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C FOR NON-INTERACTIVE Si |
C FOR NON-INTERACTIVE Si |
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surfsi(i,j) = SILICA(i,j,bi,bj) * maskC(i,j,kLev,bi,bj) |
surfsi(i,j) = SILICA(i,j,bi,bj) * maskC(i,j,kLev,bi,bj) |
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CALL CARBON_COEFFS( |
CALL CARBON_COEFFS( |
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I theta,salt, |
I theta,salt, |
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I bi,bj,iMin,iMax,jMin,jMax) |
I bi,bj,iMin,iMax,jMin,jMax,myThid) |
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C==================================================================== |
C==================================================================== |
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DO j=jmin,jmax |
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DO i=imin,imax |
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C Compute AtmosP and Kwexch_Pre which are re-used for flux of O2 |
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#ifdef USE_PLOAD |
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C Convert anomalous pressure pLoad (in Pa) from atmospheric model |
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C to total pressure (in Atm) |
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C Note: it is assumed the reference atmospheric pressure is 1Atm=1013mb |
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C rather than the actual ref. pressure from Atm. model so that on |
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C average AtmosP is about 1 Atm. |
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AtmosP(i,j,bi,bj)= 1. _d 0 + pLoad(i,j,bi,bj)/Pa2Atm |
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#endif |
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C Pre-compute part of exchange coefficient: pisvel*(1-fice) |
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C Schmidt number is accounted for later |
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pisvel(i,j)=0.337 _d 0 *wind(i,j,bi,bj)**2/3.6 _d 5 |
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Kwexch_Pre(i,j,bi,bj) = pisvel(i,j) |
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& * (1. _d 0 - FIce(i,j,bi,bj)) |
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ENDDO |
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ENDDO |
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c pCO2 solver... |
c pCO2 solver... |
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C$TAF LOOP = parallel |
C$TAF LOOP = parallel |
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DO j=jmin,jmax |
DO j=jmin,jmax |
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C$TAF LOOP = parallel |
C$TAF LOOP = parallel |
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DO i=imin,imax |
DO i=imin,imax |
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IF(maskC(i,j,kLev,bi,bj) .NE. 0.)THEN |
IF ( maskC(i,j,kLev,bi,bj).NE.0. _d 0 ) THEN |
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CALL CALC_PCO2_APPROX( |
CALL CALC_PCO2_APPROX( |
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I theta(i,j,kLev,bi,bj),salt(i,j,kLev,bi,bj), |
I theta(i,j,kLev,bi,bj),salt(i,j,kLev,bi,bj), |
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I PTR_CO2(i,j,kLev), surfphos(i,j), |
I PTR_CO2(i,j,kLev), surfphos(i,j), |
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I ak1(i,j,bi,bj),ak2(i,j,bi,bj), |
I ak1(i,j,bi,bj),ak2(i,j,bi,bj), |
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I ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj), |
I ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj), |
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I aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj), |
I aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj), |
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I aksi(i,j,bi,bj),akf(i,j,bi,bj),ff(i,j,bi,bj), |
I aksi(i,j,bi,bj),akf(i,j,bi,bj), |
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I ak0(i,j,bi,bj), fugf(i,j,bi,bj), |
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I ff(i,j,bi,bj), |
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I bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj), |
I bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj), |
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U pH(i,j,bi,bj),pCO2(i,j,bi,bj) ) |
U pH(i,j,bi,bj),pCO2(i,j,bi,bj), |
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I i,j,kLev,bi,bj,myIter,myThid ) |
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ELSE |
ELSE |
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pCO2(i,j,bi,bj)=0. _d 0 |
pCO2(i,j,bi,bj)=0. _d 0 |
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END IF |
ENDIF |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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DO j=jmin,jmax |
DO j=jmin,jmax |
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DO i=imin,imax |
DO i=imin,imax |
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IF (maskC(i,j,kLev,bi,bj).NE.0.) THEN |
IF ( maskC(i,j,kLev,bi,bj).NE.0. _d 0 ) THEN |
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C calculate SCHMIDT NO. for CO2 |
C calculate SCHMIDT NO. for CO2 |
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SchmidtNoDIC(i,j) = |
SchmidtNoDIC(i,j) = |
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& sca1 |
& sca1 |
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& + sca2 * theta(i,j,kLev,bi,bj) |
& + sca2 * theta(i,j,kLev,bi,bj) |
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& + sca3 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) |
& + sca3 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) |
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& + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) |
& + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) |
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& *theta(i,j,kLev,bi,bj) |
& *theta(i,j,kLev,bi,bj) |
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C Determine surface flux (FDIC) |
C Determine surface flux (FDIC) |
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C first correct pCO2at for surface atmos pressure |
C first correct pCO2at for surface atmos pressure |
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pCO2sat(i,j) = |
pCO2sat(i,j) = |
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& AtmosP(i,j,bi,bj)*AtmospCO2(i,j,bi,bj) |
& AtmosP(i,j,bi,bj)*AtmospCO2(i,j,bi,bj) |
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c find exchange coefficient |
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c account for schmidt number and and varible piston velocity |
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pisvel(i,j,bi,bj) =0.337*wind(i,j,bi,bj)**2/3.6d5 |
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Kwexch(i,j) = |
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& pisvel(i,j,bi,bj) |
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& / sqrt(SchmidtNoDIC(i,j)/660.0) |
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c OR use a constant coeff |
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c Kwexch(i,j) = 5e-5 |
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c ice influence |
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Kwexch(i,j) =(1.d0-Fice(i,j,bi,bj))*Kwexch(i,j) |
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C then account for Schmidt number |
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Kwexch(i,j) = Kwexch_Pre(i,j,bi,bj) |
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& / sqrt(SchmidtNoDIC(i,j)/660.0 _d 0) |
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#ifdef WATERVAP_BUG |
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C Calculate flux in terms of DIC units using K0, solubility |
C Calculate flux in terms of DIC units using K0, solubility |
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C Flux = Vp * ([CO2sat] - [CO2]) |
C Flux = Vp * ([CO2sat] - [CO2]) |
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C CO2sat = K0*pCO2atmos*P/P0 |
C CO2sat = K0*pCO2atmos*P/P0 |
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C Converting pCO2 to [CO2] using ff, as in CALC_PCO2 |
C Converting pCO2 to [CO2] using ff, as in CALC_PCO2 |
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FluxCO2(i,j,bi,bj) = |
FluxCO2(i,j,bi,bj) = |
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& maskC(i,j,kLev,bi,bj)*Kwexch(i,j)*( |
& Kwexch(i,j)*( |
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& ak0(i,j,bi,bj)*pCO2sat(i,j) - |
& ak0(i,j,bi,bj)*pCO2sat(i,j) - |
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& ff(i,j,bi,bj)*pCO2(i,j,bi,bj) |
& ff(i,j,bi,bj)*pCO2(i,j,bi,bj) |
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& ) |
& ) |
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ELSE |
#else |
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FluxCO2(i,j,bi,bj) = 0. |
C Corrected by Val Bennington Nov 2010 per G.A. McKinley's finding |
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ENDIF |
C of error in application of water vapor correction |
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c Flux = kw*rho*(ff*pCO2atm-k0*FugFac*pCO2ocean) |
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FluxCO2(i,j,bi,bj) = |
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& Kwexch(i,j)*( |
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& ff(i,j,bi,bj)*pCO2sat(i,j) - |
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& pCO2(i,j,bi,bj)*fugf(i,j,bi,bj) |
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& *ak0(i,j,bi,bj) ) |
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& |
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#endif |
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ELSE |
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FluxCO2(i,j,bi,bj) = 0. _d 0 |
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ENDIF |
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C convert flux (mol kg-1 m s-1) to (mol m-2 s-1) |
C convert flux (mol kg-1 m s-1) to (mol m-2 s-1) |
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FluxCO2(i,j,bi,bj) = FluxCO2(i,j,bi,bj)/permil |
FluxCO2(i,j,bi,bj) = FluxCO2(i,j,bi,bj)/permil |
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IF (maskC(i,j,kLev,bi,bj).NE.0.) THEN |
#ifdef ALLOW_OLD_VIRTUALFLUX |
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IF (maskC(i,j,kLev,bi,bj).NE.0. _d 0) THEN |
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c calculate virtual flux |
c calculate virtual flux |
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c EminusPforV = dS/dt*(1/Sglob) |
c EminusPforV = dS/dt*(1/Sglob) |
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C NOTE: Be very careful with signs here! |
C NOTE: Be very careful with signs here! |
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ELSE |
ELSE |
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VirtualFlux(i,j)=0. _d 0 |
VirtualFlux(i,j)=0. _d 0 |
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ENDIF |
ENDIF |
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#endif /* ALLOW_OLD_VIRTUALFLUX */ |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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C update tendency |
C update tendency |
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DO j=jmin,jmax |
DO j=jmin,jmax |
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DO i=imin,imax |
DO i=imin,imax |
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GDC(i,j)= maskC(i,j,kLev,bi,bj)*recip_drF(kLev)* |
GDC(i,j)= recip_drF(kLev)*recip_hFacC(i,j,kLev,bi,bj) |
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& recip_hFacC(i,j,kLev,bi,bj)*( |
& *(FluxCO2(i,j,bi,bj) |
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& FluxCO2(i,j,bi,bj) + VirtualFlux(i,j) |
#ifdef ALLOW_OLD_VIRTUALFLUX |
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& ) |
& + VirtualFlux(i,j) |
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#endif |
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& ) |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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