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C $Header: /u/gcmpack/MITgcm/model/src/find_alpha.F,v 1.16 2007/05/01 04:09:36 mlosch Exp $ |
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C $Name: $ |
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|
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#include "CPP_OPTIONS.h" |
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#define USE_FACTORIZED_POLY |
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|
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CBOP |
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C !ROUTINE: FIND_ALPHA |
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C !INTERFACE: |
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SUBROUTINE FIND_ALPHA ( |
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I bi, bj, iMin, iMax, jMin, jMax, k, kRef, |
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O alphaLoc, |
13 |
I myThid ) |
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|
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | o SUBROUTINE FIND_ALPHA |
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C | Calculates [drho(S,T,z) / dT] of a horizontal slice |
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C *==========================================================* |
20 |
C | |
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C | k - is the Theta/Salt level |
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C | kRef - determines pressure reference level |
23 |
C | (not used in 'LINEAR' mode) |
24 |
C | |
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C | alphaLoc - drho / dT (kg/m^3/C) |
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C | |
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C *==========================================================* |
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C \ev |
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|
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C !USES: |
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IMPLICIT NONE |
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C === Global variables === |
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#include "SIZE.h" |
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#include "DYNVARS.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "EOS.h" |
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#include "GRID.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C k :: Level of Theta/Salt slice |
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C kRef :: Pressure reference level |
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c myThid :: thread number for this instance of the routine |
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INTEGER myThid |
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INTEGER bi,bj,iMin,iMax,jMin,jMax |
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INTEGER k |
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INTEGER kRef |
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_RL alphaLoc(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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|
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C !LOCAL VARIABLES: |
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C == Local variables == |
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INTEGER i,j |
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_RL refTemp,refSalt,tP,sP |
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_RL t1, t2, t3, s1, s3o2, p1, p2, sp5, p1t1 |
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_RL drhoP0dtheta, drhoP0dthetaFresh, drhoP0dthetaSalt |
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_RL dKdtheta, dKdthetaFresh, dKdthetaSalt, dKdthetaPres |
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_RL locPres(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL rhoP0 (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL bulkMod(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL dnum_dtheta, dden_dtheta |
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_RL rhoDen (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL rhoLoc (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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CEOP |
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|
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#ifdef CHECK_SALINITY_FOR_NEGATIVE_VALUES |
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c CALL LOOK_FOR_NEG_SALINITY( |
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c I iMin, iMax, jMin, jMax, |
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c U sFld, |
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c I k, bi, bj, myThid ) |
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#endif |
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|
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IF (equationOfState.EQ.'LINEAR') THEN |
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|
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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alphaLoc(i,j) = -rhonil * tAlpha |
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ENDDO |
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ENDDO |
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|
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ELSEIF (equationOfState.EQ.'POLY3') THEN |
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|
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refTemp=eosRefT(kRef) |
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refSalt=eosRefS(kRef) |
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|
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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tP=theta(i,j,k,bi,bj)-refTemp |
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sP=salt(i,j,k,bi,bj)-refSalt |
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#ifdef USE_FACTORIZED_POLY |
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alphaLoc(i,j) = |
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& ( eosC(6,kRef) |
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& *tP*3. |
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& +(eosC(7,kRef)*sP + eosC(3,kRef))*2. |
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& )*tP |
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& +(eosC(8,kRef)*sP + eosC(4,kRef) )*sP + eosC(1,kRef) |
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& |
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#else |
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alphaLoc(i,j) = |
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& eosC(1,kRef) + |
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& eosC(3,kRef)*tP*2. + |
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& eosC(4,kRef) *sP + |
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& eosC(6,kRef)*tP*tP*3. + |
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& eosC(7,kRef)*tP*2. *sP + |
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& eosC(8,kRef) *sP*sP |
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#endif |
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ENDDO |
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ENDDO |
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|
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ELSEIF ( equationOfState(1:5).EQ.'JMD95' |
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& .OR. equationOfState.EQ.'UNESCO' ) THEN |
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C nonlinear equation of state in pressure coordinates |
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|
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CALL PRESSURE_FOR_EOS( |
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I bi, bj, iMin, iMax, jMin, jMax, kRef, |
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O locPres, |
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I myThid ) |
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|
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CALL FIND_RHOP0( |
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I iMin, iMax, jMin, jMax, |
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I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
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O rhoP0, |
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I myThid ) |
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|
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CALL FIND_BULKMOD( |
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I iMin, iMax, jMin, jMax, locPres, |
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I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
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O bulkMod, |
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I myThid ) |
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|
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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|
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C abbreviations |
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t1 = theta(i,j,k,bi,bj) |
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t2 = t1*t1 |
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t3 = t2*t1 |
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|
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s1 = salt(i,j,k,bi,bj) |
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IF ( s1 .GT. 0. _d 0 ) THEN |
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s3o2 = SQRT(s1*s1*s1) |
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ELSE |
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s1 = 0. _d 0 |
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s3o2 = 0. _d 0 |
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ENDIF |
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|
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p1 = locPres(i,j)*SItoBar |
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p2 = p1*p1 |
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|
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C d(rho)/d(theta) |
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C of fresh water at p = 0 |
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drhoP0dthetaFresh = |
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& eosJMDCFw(2) |
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& + 2.*eosJMDCFw(3)*t1 |
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& + 3.*eosJMDCFw(4)*t2 |
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& + 4.*eosJMDCFw(5)*t3 |
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& + 5.*eosJMDCFw(6)*t3*t1 |
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C of salt water at p = 0 |
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drhoP0dthetaSalt = |
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& s1*( |
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& eosJMDCSw(2) |
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& + 2.*eosJMDCSw(3)*t1 |
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& + 3.*eosJMDCSw(4)*t2 |
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& + 4.*eosJMDCSw(5)*t3 |
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& ) |
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& + s3o2*( |
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& + eosJMDCSw(7) |
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& + 2.*eosJMDCSw(8)*t1 |
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& ) |
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C d(bulk modulus)/d(theta) |
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C of fresh water at p = 0 |
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dKdthetaFresh = |
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& eosJMDCKFw(2) |
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& + 2.*eosJMDCKFw(3)*t1 |
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& + 3.*eosJMDCKFw(4)*t2 |
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& + 4.*eosJMDCKFw(5)*t3 |
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C of sea water at p = 0 |
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dKdthetaSalt = |
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& s1*( eosJMDCKSw(2) |
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& + 2.*eosJMDCKSw(3)*t1 |
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& + 3.*eosJMDCKSw(4)*t2 |
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& ) |
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& + s3o2*( eosJMDCKSw(6) |
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& + 2.*eosJMDCKSw(7)*t1 |
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& ) |
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C of sea water at p |
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dKdthetaPres = |
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& p1*( eosJMDCKP(2) |
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& + 2.*eosJMDCKP(3)*t1 |
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& + 3.*eosJMDCKP(4)*t2 |
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& ) |
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& + p1*s1*( eosJMDCKP(6) |
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& + 2.*eosJMDCKP(7)*t1 |
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& ) |
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& + p2*( eosJMDCKP(10) |
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& + 2.*eosJMDCKP(11)*t1 |
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& ) |
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& + p2*s1*( eosJMDCKP(13) |
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& + 2.*eosJMDCKP(14)*t1 |
200 |
& ) |
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|
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drhoP0dtheta = drhoP0dthetaFresh |
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& + drhoP0dthetaSalt |
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dKdtheta = dKdthetaFresh |
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& + dKdthetaSalt |
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& + dKdthetaPres |
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alphaLoc(i,j) = |
208 |
& ( bulkmod(i,j)**2*drhoP0dtheta |
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& - bulkmod(i,j)*p1*drhoP0dtheta |
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& - rhoP0(i,j)*p1*dKdtheta ) |
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& /( bulkmod(i,j) - p1 )**2 |
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|
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|
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ENDDO |
215 |
ENDDO |
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ELSEIF ( equationOfState.EQ.'MDJWF' ) THEN |
217 |
|
218 |
CALL PRESSURE_FOR_EOS( |
219 |
I bi, bj, iMin, iMax, jMin, jMax, kRef, |
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O locPres, |
221 |
I myThid ) |
222 |
|
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CALL FIND_RHONUM( |
224 |
I iMin, iMax, jMin, jMax, locPres, |
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I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
226 |
O rhoLoc, |
227 |
I myThid ) |
228 |
|
229 |
CALL FIND_RHODEN( |
230 |
I iMin, iMax, jMin, jMax, locPres, |
231 |
I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
232 |
O rhoDen, |
233 |
I myThid ) |
234 |
|
235 |
DO j=jMin,jMax |
236 |
DO i=iMin,iMax |
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t1 = theta(i,j,k,bi,bj) |
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t2 = t1*t1 |
239 |
s1 = salt(i,j,k,bi,bj) |
240 |
IF ( s1 .GT. 0. _d 0 ) THEN |
241 |
sp5 = SQRT(s1) |
242 |
ELSE |
243 |
s1 = 0. _d 0 |
244 |
sp5 = 0. _d 0 |
245 |
ENDIF |
246 |
|
247 |
p1 = locPres(i,j)*SItodBar |
248 |
p1t1 = p1*t1 |
249 |
|
250 |
dnum_dtheta = eosMDJWFnum(1) |
251 |
& + t1*(2.*eosMDJWFnum(2) + 3.*eosMDJWFnum(3)*t1) |
252 |
& + eosMDJWFnum(5)*s1 |
253 |
& + p1t1*(2.*eosMDJWFnum(8) + 2.*eosMDJWFnum(11)*p1) |
254 |
|
255 |
dden_dtheta = eosMDJWFden(1) |
256 |
& + t1*(2.*eosMDJWFden(2) |
257 |
& + t1*(3.*eosMDJWFden(3) |
258 |
& + 4.*eosMDJWFden(4)*t1 ) ) |
259 |
& + s1*(eosMDJWFden(6) |
260 |
& + t1*(3.*eosMDJWFden(7)*t1 |
261 |
& + 2.*eosMDJWFden(9)*sp5 ) ) |
262 |
& + p1*p1*(3.*eosMDJWFden(11)*t2 + eosMDJWFden(12)*p1) |
263 |
|
264 |
alphaLoc(i,j) = rhoDen(i,j)*(dnum_dtheta |
265 |
& - (rhoLoc(i,j)*rhoDen(i,j))*dden_dtheta) |
266 |
|
267 |
ENDDO |
268 |
ENDDO |
269 |
|
270 |
ELSE |
271 |
WRITE(*,*) 'FIND_ALPHA: equationOfState = ',equationOfState |
272 |
STOP 'FIND_ALPHA: "equationOfState" has illegal value' |
273 |
ENDIF |
274 |
|
275 |
RETURN |
276 |
END |
277 |
|
278 |
SUBROUTINE FIND_BETA ( |
279 |
I bi, bj, iMin, iMax, jMin, jMax, k, kRef, |
280 |
O betaLoc, |
281 |
I myThid ) |
282 |
C /==========================================================\ |
283 |
C | o SUBROUTINE FIND_BETA | |
284 |
C | Calculates [drho(S,T,z) / dS] of a horizontal slice | |
285 |
C |==========================================================| |
286 |
C | | |
287 |
C | k - is the Theta/Salt level | |
288 |
C | kRef - determines pressure reference level | |
289 |
C | (not used in 'LINEAR' mode) | |
290 |
C | | |
291 |
C | betaLoc - drho / dS (kg/m^3/PSU) | |
292 |
C | | |
293 |
C \==========================================================/ |
294 |
IMPLICIT NONE |
295 |
|
296 |
C === Global variables === |
297 |
#include "SIZE.h" |
298 |
#include "DYNVARS.h" |
299 |
#include "EEPARAMS.h" |
300 |
#include "PARAMS.h" |
301 |
#include "EOS.h" |
302 |
#include "GRID.h" |
303 |
|
304 |
C == Routine arguments == |
305 |
C k :: Level of Theta/Salt slice |
306 |
C kRef :: Pressure reference level |
307 |
c myThid :: thread number for this instance of the routine |
308 |
INTEGER myThid |
309 |
INTEGER bi,bj,iMin,iMax,jMin,jMax |
310 |
INTEGER k |
311 |
INTEGER kRef |
312 |
_RL betaLoc(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
313 |
|
314 |
C == Local variables == |
315 |
INTEGER i,j |
316 |
_RL refTemp,refSalt,tP,sP |
317 |
_RL t1, t2, t3, s1, s3o2, p1, sp5, p1t1 |
318 |
_RL drhoP0dS |
319 |
_RL dKdS, dKdSSalt, dKdSPres |
320 |
_RL locPres(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
321 |
_RL rhoP0 (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
322 |
_RL bulkMod(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
323 |
_RL dnum_dsalt, dden_dsalt |
324 |
_RL rhoDen (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
325 |
_RL rhoLoc (1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
326 |
CEOP |
327 |
|
328 |
#ifdef CHECK_SALINITY_FOR_NEGATIVE_VALUES |
329 |
c CALL LOOK_FOR_NEG_SALINITY( |
330 |
c I iMin, iMax, jMin, jMax, |
331 |
c U sFld, |
332 |
c I k, bi, bj, myThid ) |
333 |
#endif |
334 |
|
335 |
IF (equationOfState.EQ.'LINEAR') THEN |
336 |
|
337 |
DO j=jMin,jMax |
338 |
DO i=iMin,iMax |
339 |
betaLoc(i,j) = rhonil * sBeta |
340 |
ENDDO |
341 |
ENDDO |
342 |
|
343 |
ELSEIF (equationOfState.EQ.'POLY3') THEN |
344 |
|
345 |
refTemp=eosRefT(kRef) |
346 |
refSalt=eosRefS(kRef) |
347 |
|
348 |
DO j=jMin,jMax |
349 |
DO i=iMin,iMax |
350 |
tP=theta(i,j,k,bi,bj)-refTemp |
351 |
sP=salt(i,j,k,bi,bj)-refSalt |
352 |
#ifdef USE_FACTORIZED_POLY |
353 |
betaLoc(i,j) = |
354 |
& ( eosC(9,kRef)*sP*3. + eosC(5,kRef)*2. )*sP + eosC(2,kRef) |
355 |
& + ( eosC(7,kRef)*tP |
356 |
& +eosC(8,kRef)*sP*2. + eosC(4,kRef) |
357 |
& )*tP |
358 |
#else |
359 |
betaLoc(i,j) = |
360 |
& eosC(2,kRef) + |
361 |
& eosC(4,kRef)*tP + |
362 |
& eosC(5,kRef) *sP*2. + |
363 |
& eosC(7,kRef)*tP*tP + |
364 |
& eosC(8,kRef)*tP *sP*2. + |
365 |
& eosC(9,kRef) *sP*sP*3. |
366 |
#endif |
367 |
ENDDO |
368 |
ENDDO |
369 |
|
370 |
ELSEIF ( equationOfState(1:5).EQ.'JMD95' |
371 |
& .OR. equationOfState.EQ.'UNESCO' ) THEN |
372 |
C nonlinear equation of state in pressure coordinates |
373 |
|
374 |
CALL PRESSURE_FOR_EOS( |
375 |
I bi, bj, iMin, iMax, jMin, jMax, kRef, |
376 |
O locPres, |
377 |
I myThid ) |
378 |
|
379 |
CALL FIND_RHOP0( |
380 |
I iMin, iMax, jMin, jMax, |
381 |
I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
382 |
O rhoP0, |
383 |
I myThid ) |
384 |
|
385 |
CALL FIND_BULKMOD( |
386 |
I iMin, iMax, jMin, jMax, locPres, |
387 |
I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
388 |
O bulkMod, |
389 |
I myThid ) |
390 |
|
391 |
DO j=jMin,jMax |
392 |
DO i=iMin,iMax |
393 |
|
394 |
C abbreviations |
395 |
t1 = theta(i,j,k,bi,bj) |
396 |
t2 = t1*t1 |
397 |
t3 = t2*t1 |
398 |
|
399 |
s1 = salt(i,j,k,bi,bj) |
400 |
IF ( s1 .GT. 0. _d 0 ) THEN |
401 |
s3o2 = 1.5*SQRT(s1) |
402 |
ELSE |
403 |
s1 = 0. _d 0 |
404 |
s3o2 = 0. _d 0 |
405 |
ENDIF |
406 |
|
407 |
p1 = locPres(i,j)*SItoBar |
408 |
|
409 |
C d(rho)/d(S) |
410 |
C of fresh water at p = 0 |
411 |
drhoP0dS = 0. _d 0 |
412 |
C of salt water at p = 0 |
413 |
drhoP0dS = drhoP0dS |
414 |
& + eosJMDCSw(1) |
415 |
& + eosJMDCSw(2)*t1 |
416 |
& + eosJMDCSw(3)*t2 |
417 |
& + eosJMDCSw(4)*t3 |
418 |
& + eosJMDCSw(5)*t3*t1 |
419 |
& + s3o2*( |
420 |
& eosJMDCSw(6) |
421 |
& + eosJMDCSw(7)*t1 |
422 |
& + eosJMDCSw(8)*t2 |
423 |
& ) |
424 |
& + 2*eosJMDCSw(9)*s1 |
425 |
C d(bulk modulus)/d(S) |
426 |
C of fresh water at p = 0 |
427 |
dKdS = 0. _d 0 |
428 |
C of sea water at p = 0 |
429 |
dKdSSalt = |
430 |
& eosJMDCKSw(1) |
431 |
& + eosJMDCKSw(2)*t1 |
432 |
& + eosJMDCKSw(3)*t2 |
433 |
& + eosJMDCKSw(4)*t3 |
434 |
& + s3o2*( eosJMDCKSw(5) |
435 |
& + eosJMDCKSw(6)*t1 |
436 |
& + eosJMDCKSw(7)*t2 |
437 |
& ) |
438 |
|
439 |
C of sea water at p |
440 |
dKdSPres = |
441 |
& p1*( eosJMDCKP(5) |
442 |
& + eosJMDCKP(6)*t1 |
443 |
& + eosJMDCKP(7)*t2 |
444 |
& ) |
445 |
& + s3o2*p1*eosJMDCKP(8) |
446 |
& + p1*p1*( eosJMDCKP(12) |
447 |
& + eosJMDCKP(13)*t1 |
448 |
& + eosJMDCKP(14)*t2 |
449 |
& ) |
450 |
|
451 |
dKdS = dKdSSalt + dKdSPres |
452 |
|
453 |
betaLoc(i,j) = |
454 |
& ( bulkmod(i,j)**2*drhoP0dS |
455 |
& - bulkmod(i,j)*p1*drhoP0dS |
456 |
& - rhoP0(i,j)*p1*dKdS ) |
457 |
& /( bulkmod(i,j) - p1 )**2 |
458 |
|
459 |
|
460 |
ENDDO |
461 |
ENDDO |
462 |
ELSEIF ( equationOfState.EQ.'MDJWF' ) THEN |
463 |
|
464 |
CALL PRESSURE_FOR_EOS( |
465 |
I bi, bj, iMin, iMax, jMin, jMax, kRef, |
466 |
O locPres, |
467 |
I myThid ) |
468 |
|
469 |
CALL FIND_RHONUM( |
470 |
I iMin, iMax, jMin, jMax, locPres, |
471 |
I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
472 |
O rhoLoc, |
473 |
I myThid ) |
474 |
|
475 |
CALL FIND_RHODEN( |
476 |
I iMin, iMax, jMin, jMax, locPres, |
477 |
I theta(1-OLx,1-OLy,k,bi,bj), salt(1-OLx,1-OLy,k,bi,bj), |
478 |
O rhoDen, |
479 |
I myThid ) |
480 |
|
481 |
DO j=jMin,jMax |
482 |
DO i=iMin,iMax |
483 |
t1 = theta(i,j,k,bi,bj) |
484 |
t2 = t1*t1 |
485 |
s1 = salt(i,j,k,bi,bj) |
486 |
IF ( s1 .GT. 0. _d 0 ) THEN |
487 |
sp5 = SQRT(s1) |
488 |
ELSE |
489 |
s1 = 0. _d 0 |
490 |
sp5 = 0. _d 0 |
491 |
ENDIF |
492 |
|
493 |
p1 = locPres(i,j)*SItodBar |
494 |
p1t1 = p1*t1 |
495 |
|
496 |
dnum_dsalt = eosMDJWFnum(4) |
497 |
& + eosMDJWFnum(5)*t1 |
498 |
& + 2.*eosMDJWFnum(6)*s1 + eosMDJWFnum(9)*p1 |
499 |
dden_dsalt = eosMDJWFden(5) |
500 |
& + t1*( eosMDJWFden(6) + eosMDJWFden(7)*t2 ) |
501 |
& + 1.5*sp5*(eosMDJWFden(8) + eosMDJWFden(9)*t2) |
502 |
|
503 |
betaLoc(i,j) = rhoDen(i,j)*( dnum_dsalt |
504 |
& - (rhoLoc(i,j)*rhoDen(i,j))*dden_dsalt ) |
505 |
|
506 |
ENDDO |
507 |
ENDDO |
508 |
|
509 |
ELSE |
510 |
WRITE(*,*) 'FIND_BETA: equationOfState = ',equationOfState |
511 |
STOP 'FIND_BETA: "equationOfState" has illegal value' |
512 |
ENDIF |
513 |
|
514 |
RETURN |
515 |
END |