--- MITgcm/pkg/dic/dic_surfforcing.F 2004/08/06 19:50:52 1.8 +++ MITgcm/pkg/dic/dic_surfforcing.F 2007/08/14 19:32:40 1.15 @@ -1,4 +1,4 @@ -C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/dic/dic_surfforcing.F,v 1.8 2004/08/06 19:50:52 stephd Exp $ +C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/dic/dic_surfforcing.F,v 1.15 2007/08/14 19:32:40 dfer Exp $ C $Name: $ #include "DIC_OPTIONS.h" @@ -9,7 +9,7 @@ C !ROUTINE: DIC_SURFFORCING C !INTERFACE: ========================================================== - SUBROUTINE DIC_SURFFORCING( PTR_CO2 , GDC, + SUBROUTINE DIC_SURFFORCING( PTR_CO2 , PTR_ALK, PTR_PO4, GDC, I bi,bj,imin,imax,jmin,jmax, I myIter,myTime,myThid) @@ -26,10 +26,6 @@ #include "GRID.h" #include "FFIELDS.h" #include "DIC_ABIOTIC.h" -#ifdef DIC_BIOTIC -#include "PTRACERS_SIZE.h" -#include "PTRACERS.h" -#endif C !INPUT PARAMETERS: =================================================== C myThid :: thread number @@ -39,6 +35,8 @@ INTEGER myIter, myThid _RL myTime _RL PTR_CO2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) + _RL PTR_ALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) + _RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) INTEGER iMin,iMax,jMin,jMax, bi, bj C !OUTPUT PARAMETERS: =================================================== @@ -65,29 +63,33 @@ kLev=1 +c if coupled to atmsopheric model, use the +c Co2 value passed from the coupler +#ifndef USE_ATMOSCO2 C PRE-INDUSTRIAL STEADY STATE pCO2 = 278.0 ppmv DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx - AtmospCO2(i,j,bi,bj)=278.0d-6 + AtmospCO2(i,j,bi,bj)=278.0 _d -6 ENDDO ENDDO +#endif C ================================================================= C determine inorganic carbon chem coefficients - DO j=1-OLy,sNy+OLy - DO i=1-OLx,sNx+OLx + DO j=jmin,jmax + DO i=imin,imax #ifdef DIC_BIOTIC cQQQQ check ptracer numbers - surfalk(i,j) = PTRACER(i,j,klev,bi,bj,2) + surfalk(i,j) = PTR_ALK(i,j,klev) & * maskC(i,j,kLev,bi,bj) - surfphos(i,j) = PTRACER(i,j,klev,bi,bj,3) + surfphos(i,j) = PTR_PO4(i,j,klev) & * maskC(i,j,kLev,bi,bj) #else - 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 & * maskC(i,j,kLev,bi,bj) - 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) #endif C FOR NON-INTERACTIVE Si surfsi(i,j) = SILICA(i,j,bi,bj) * maskC(i,j,kLev,bi,bj) @@ -101,9 +103,9 @@ c pCO2 solver... C$TAF LOOP = parallel - DO j=1-OLy,sNy+OLy + DO j=jmin,jmax C$TAF LOOP = parallel - DO i=1-OLx,sNx+OLx + DO i=imin,imax IF(maskC(i,j,kLev,bi,bj) .NE. 0.)THEN CALL CALC_PCO2_APPROX( @@ -122,8 +124,8 @@ ENDDO ENDDO - DO j=1-OLy,sNy+OLy - DO i=1-OLx,sNx+OLx + DO j=jmin,jmax + DO i=imin,imax IF (maskC(i,j,kLev,bi,bj).NE.0.) THEN C calculate SCHMIDT NO. for CO2 @@ -134,19 +136,30 @@ & + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) & *theta(i,j,kLev,bi,bj) +c +#ifdef USE_PLOAD +C Convert anomalous pressure pLoad (in Pa) from atmospheric model +C to total pressure (in Atm) +C Note: it is assumed the reference atmospheric pressure is 1Atm=1013mb +C rather than the actual ref. pressure from Atm. model so that on +C average AtmosP is about 1 Atm. + AtmosP(i,j,bi,bj)= 1. _d 0 + pLoad(i,j,bi,bj)/Pa2Atm +#endif + C Determine surface flux (FDIC) C first correct pCO2at for surface atmos pressure pCO2sat(i,j) = & AtmosP(i,j,bi,bj)*AtmospCO2(i,j,bi,bj) c find exchange coefficient c account for schmidt number and and varible piston velocity + pisvel(i,j,bi,bj)=0.337 _d 0 *wind(i,j,bi,bj)**2/3.6 _d 5 Kwexch(i,j) = & pisvel(i,j,bi,bj) - & / sqrt(SchmidtNoDIC(i,j)/660.0) + & / sqrt(SchmidtNoDIC(i,j)/660.0 _d 0) c OR use a constant coeff c Kwexch(i,j) = 5e-5 c ice influence -cQQ Kwexch(i,j) =(1.d0-Fice(i,j,bi,bj))*Kwexch(i,j) + Kwexch(i,j) =(1. _d 0 - FIce(i,j,bi,bj))*Kwexch(i,j) C Calculate flux in terms of DIC units using K0, solubility @@ -159,7 +172,7 @@ & ff(i,j,bi,bj)*pCO2(i,j,bi,bj) & ) ELSE - FluxCO2(i,j,bi,bj) = 0. + FluxCO2(i,j,bi,bj) = 0. _d 0 ENDIF C convert flux (mol kg-1 m s-1) to (mol m-2 s-1) FluxCO2(i,j,bi,bj) = FluxCO2(i,j,bi,bj)/permil @@ -184,9 +197,10 @@ ENDDO C update tendency - DO j=1-OLy,sNy+OLy - DO i=1-OLx,sNx+OLx - GDC(i,j)= maskC(i,j,kLev,bi,bj)*recip_drF(kLev)*( + DO j=jmin,jmax + DO i=imin,imax + GDC(i,j)= maskC(i,j,kLev,bi,bj)*recip_drF(kLev)* + & recip_hFacC(i,j,kLev,bi,bj)*( & FluxCO2(i,j,bi,bj) + VirtualFlux(i,j) & ) ENDDO