C $Header: /u/gcmpack/MITgcm/pkg/dic/bio_export.F,v 1.29 2014/11/04 17:16:33 jmc Exp $ C $Name: $ #include "DIC_OPTIONS.h" CBOP C !ROUTINE: BIO_EXPORT C !INTERFACE: ========================================================== SUBROUTINE BIO_EXPORT( PTR_PO4 , #ifdef ALLOW_FE I PTR_FE, #endif I bioac, I bi,bj,iMin,iMax,jMin,jMax, I myIter,myTime,myThid) c !DESCRIPTION: C Calculate biological activity and export C !USES: =============================================================== IMPLICIT NONE #include "SIZE.h" #include "DYNVARS.h" #include "EEPARAMS.h" #include "PARAMS.h" #include "GRID.h" #include "DIC_VARS.h" #ifdef USE_QSW #include "FFIELDS.h" #endif C !INPUT PARAMETERS: =================================================== C myThid :: thread number C myIter :: current timestep C myTime :: current time C PTR_PO4 :: phosphate tracer field C PTR_FE :: iron tracer field INTEGER myIter _RL myTime INTEGER myThid _RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) #ifdef ALLOW_FE _RL PTR_FE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) #endif INTEGER iMin, iMax, jMin, jMax, bi, bj C !OUTPUT PARAMETERS: ================================================== C bioac :: biological productivity (will be split C between export and dissolved pool) _RL bioac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nR) #if (defined ALLOW_PTRACERS defined DIC_BIOTIC) C !LOCAL VARIABLES: ==================================================== C i,j,k :: loop indices INTEGER i,j,k _RL sfac (1-OLy:sNy+OLy) _RL lit (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL kall, atten _RL nutlimit _RL tmppo4 #ifdef ALLOW_FE _RL tmpfe #endif #ifdef AD_SAFE _RL thx, thy, theps, thaux #endif CEOP #ifndef READ_PAR #ifndef USE_QSW CALL INSOL(myTime,sfac,bi,bj,myThid) #endif #endif cph: following init assumes nlev=nr cph: set in dic_init_fixed.F (ALLOW_AUTODIFF) C$TAF INIT bio_export = static, nsx*nsy*nr C FORTRAN-77 dynamic memory uses adstore adresto CRG C$TAF INIT bio_export = memory DO j=jMin,jMax DO i=iMin,iMax #ifdef READ_PAR lit(i,j)=PAR(i,j,bi,bj) #elif (defined USE_QSW) lit(i,j)=-parfrac*Qsw(i,j,bi,bj)*maskC(i,j,1,bi,bj) #else lit(i,j)=sfac(j) #endif IF ( .NOT. QSW_underice ) THEN c if using Qsw but not seaice/thsice or coupled, then c ice fraction needs to be taken into account lit(i,j)=lit(i,j)*(1. _d 0 - FIce(i,j,bi,bj)) ENDIF ENDDO ENDDO kall = k0 DO k=1,nlev C$TAF STORE lit = bio_export DO j=jMin,jMax DO i=iMin,iMax #ifdef LIGHT_CHL c Add self-shading effects to light attenuation coefficient kall = k0+kchl*CHL(i,j,bi,bj) #endif atten = kall*drF(k)*hFacC(i,j,k,bi,bj)*.5 _d 0 if (k.gt.1) atten = atten & +( kall*drF(k-1)*hFacC(i,j,k-1,bi,bj)*.5 _d 0 ) lit(i,j)=lit(i,j)*exp(-atten) #ifndef TARGET_NEC_SX C this statement breaks vectorization and causes a dramatic C performance drop on vector computers IF (lit(i,j).LT.0. _d 0.OR.lit(i,j).GT.350. _d 0) THEN print*,'QQ lit',i,j,lit(i,j) ENDIF #endif #ifdef DIC_NO_NEG tmppo4=max(0. _d 0, PTR_PO4(i,j,k)) lit(i,j)=max(0. _d 0,lit(i,j)) #else tmppo4=PTR_PO4(i,j,k) #endif #ifdef ALLOW_FE #ifdef DIC_NO_NEG tmpfe=max(0. _d 0,PTR_FE(i,j,k)) #else tmpfe=PTR_FE(i,j,k) #endif #ifdef AD_SAFE thx = tmppo4/(tmppo4+KPO4) thy = tmpfe/(tmpfe+KFE) c thx = PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+KPO4) c thy = PTR_FE(i,j,k)/(PTR_FE(i,j,k)+KFE) c theps = 1. _d -6 c thaux = tanh( (thx-thy)/theps ) thaux = tanh( (thx-thy)*1. _d 6 ) nutlimit= ( 1. _d 0 - thaux ) * thx * 0.5 _d 0 & + ( 1. _d 0 + thaux ) * thy * 0.5 _d 0 #else nutlimit=min( tmppo4/(tmppo4+KPO4),tmpfe/(tmpfe+KFE) ) #endif #else nutlimit= tmppo4/(tmppo4+KPO4) #endif bioac(i,j,k)=alpha(i,j,bi,bj)* & lit(i,j)/(lit(i,j)+lit0)*maskC(i,j,k,bi,bj)* & nutlimit ENDDO ENDDO ENDDO c #endif /* definded ALLOW_PTRACERS && defined DIC_BIOTIC */ RETURN END