C $Header: /u/gcmpack/MITgcm/pkg/seaice/lsr.F,v 1.36 2016/01/28 12:54:12 mlosch Exp $ C $Name: $ #ifndef SEAICE_LSRBNEW C for an alternative discretization of d/dx[ (zeta-eta) dV/dy] C and d/dy[ (zeta-eta) dU/dx] uncomment this option C#define SEAICE_TEST #endif #include "SEAICE_OPTIONS.h" #ifdef ALLOW_AUTODIFF # include "AUTODIFF_OPTIONS.h" #endif CStartOfInterface SUBROUTINE lsr( ilcall, myThid ) C *==========================================================* C | SUBROUTINE lsr | C | o Solve ice momentum equation with an LSR dynamics solver| C | (see Zhang and Hibler, JGR, 102, 8691-8702, 1997 | C | and Zhang and Rothrock, MWR, 131, 845- 861, 2003) | C | Written by Jinlun Zhang, PSC/UW, Feb-2001 | C | zhang@apl.washington.edu | C *==========================================================* IMPLICIT NONE C === Global variables === #include "SIZE.h" #include "EEPARAMS.h" #include "PARAMS.h" #include "GRID.h" #include "SEAICE_SIZE.h" #include "SEAICE_PARAMS.h" #include "SEAICE.h" C#include "SEAICE_GRID.h" #ifdef ALLOW_AUTODIFF_TAMC # include "tamc.h" #endif C === Routine arguments === C myThid - Thread no. that called this routine. INTEGER ilcall INTEGER myThid CEndOfInterface #ifndef SEAICE_CGRID #ifdef SEAICE_ALLOW_DYNAMICS C === Local variables === C i,j,bi,bj - Loop counters INTEGER i, j, m, bi, bj, j1, j2, im, jm INTEGER ICOUNT1, ICOUNT2 _RL WFAU, WFAV, WFAU1, WFAV1, WFAU2, WFAV2 _RL AA3, S1, S2, S1A, S2A _RL e11loc, e22loc, e12loc _RL COSWAT _RS SINWAT _RL ECM2, DELT1, DELT2 _RL TEMPVAR C diagonals of coefficient matrices _RL AU (1:sNx,1:sNy,nSx,nSy) _RL BU (1:sNx,1:sNy,nSx,nSy) _RL CU (1:sNx,1:sNy,nSx,nSy) _RL AV (1:sNx,1:sNy,nSx,nSy) _RL BV (1:sNx,1:sNy,nSx,nSy) _RL CV (1:sNx,1:sNy,nSx,nSy) C coefficients for lateral points, u(j+/-1) _RL uRt1(1:sNx,1:sNy,nSx,nSy) _RL uRt2(1:sNx,1:sNy,nSx,nSy) C coefficients for lateral points, v(i+/-1) _RL vRt1(1:sNx,1:sNy,nSx,nSy) _RL vRt2(1:sNx,1:sNy,nSx,nSy) C RHS _RL rhsU (1:sNx,1:sNy,nSx,nSy) _RL rhsV (1:sNx,1:sNy,nSx,nSy) C symmetric and anti-symmetric drag coefficients _RL DRAGS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL DRAGA (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) #ifdef SEAICE_LSRBNEW LOGICAL doIterate4u, doIterate4v CHARACTER*(MAX_LEN_MBUF) msgBuf C coefficients of ice velocities in coefficient matrix C for both U and V-equation C XX: double derivative in X C YY: double derivative in Y C XM: metric term with derivative in X C YM: metric term with derivative in Y _RL UXX (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL UYY (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL UXM (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL UYM (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL VXX (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL VYY (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL VXM (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL VYM (1-OLx:sNx+OLx,1-OLy:sNy+OLy) C abbreviations _RL etaU (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL zetaU(1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL etaV (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL zetaV(1-OLx:sNx+OLx,1-OLy:sNy+OLy) C contribution of sigma on righ hand side _RL sig11(1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL sig22(1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL sig12(1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL sig21(1-OLx:sNx+OLx,1-OLy:sNy+OLy) C auxillary fields _RL CUU (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL CVV (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL URT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL VRT (1-OLx:sNx+OLx,1-OLy:sNy+OLy) #else _RL URT(1-OLx:sNx+OLx), CUU(1-OLx:sNx+OLx) _RL VRT(1-OLy:sNy+OLy), CVV(1-OLy:sNy+OLy) _RL etaPlusZeta (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL zetaMinusEta(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL ETAMEAN (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL ZETAMEAN (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL dVdx (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL dVdy (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL dUdx (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL dUdy (1-OLx:sNx+OLx,1-OLy:sNy+OLy) #ifdef SEAICE_TEST _RL uz (1-OLx:sNx+OLx,1-OLy:sNy+OLy) _RL vz (1-OLx:sNx+OLx,1-OLy:sNy+OLy) #endif INTEGER phexit _RL AA1, AA2, AA4, AA5, AA6 #endif /* SEAICE_LSRBNEW */ _RL UERR C abbreviations _RL ucLoc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL vcLoc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL uTmp (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) _RL vTmp (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) C SET SOME VALUES WFAU1=0.95 _d 0 WFAV1=0.95 _d 0 WFAU2=ZERO WFAV2=ZERO S1A=0.80 _d 0 S2A=0.80 _d 0 WFAU=WFAU1 WFAV=WFAV1 ICOUNT1=SEAICElinearIterMax ICOUNT2=SEAICElinearIterMax ECM2= 1. _d 0/(SEAICE_eccen**2) SINWAT=SIN(SEAICE_waterTurnAngle*deg2rad) COSWAT=COS(SEAICE_waterTurnAngle*deg2rad) DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO j=1-OLy,sNy+OLy-1 DO i=1-OLx,sNx+OLx-1 ucLoc(I,J,bi,bj) = 0.25 _d 0 * ( & + uIceC(I+1,J,bi,bj) + uIceC(I+1,J+1,bi,bj) & + uIceC(I ,J,bi,bj) + uIceC(I, J+1,bi,bj) ) vcLoc(I,J,bi,bj) = 0.25 _d 0 * ( & + vIceC(I+1,J,bi,bj) + vIceC(I+1,J+1,bi,bj) & + vIceC(I ,J,bi,bj) + vIceC(I, J+1,bi,bj) ) ENDDO ENDDO DO J=1-OLy,sNy+OLy-1 DO I=1-OLy,sNx+OLy-1 e11loc = 0.5 _d 0 * _recip_dxF(I,J,bi,bj) * & (uIceC(I+1,J+1,bi,bj)+uIceC(I+1,J,bi,bj) & -uIceC(I, J+1,bi,bj)-uIceC(I, J,bi,bj)) & + vcLoc(I,J,bi,bj) * k2AtC(I,J,bi,bj) e22loc = 0.5 _d 0 * _recip_dyF(I,J,bi,bj) * & (vIceC(I+1,J+1,bi,bj)+vIceC(I,J+1,bi,bj) & -vIceC(I+1,J, bi,bj)-vIceC(I,J, bi,bj)) & + ucLoc(I,J,bi,bj) * k1AtC(I,J,bi,bj) e12loc = 0.5 _d 0*( & 0.5 _d 0 * _recip_dyF(I,J,bi,bj) * & (uIceC(I+1,J+1,bi,bj)+uIceC(I,J+1,bi,bj) & -uIceC(I+1,J, bi,bj)-uIceC(I,J, bi,bj)) & + 0.5 _d 0 * _recip_dxF(I,J,bi,bj) * & (vIceC(I+1,J+1,bi,bj)+vIceC(I+1,J,bi,bj) & -vIceC(I, J+1,bi,bj)-vIceC(I, J,bi,bj)) & - vcLoc(I,J,bi,bj)*k1AtC(I,J,bi,bj) & - ucLoc(I,J,bi,bj)*k2AtC(I,J,bi,bj) ) C NOW EVALUATE VISCOSITIES DELT1=(e11loc**2+e22loc**2)*(1. _d 0+ECM2) & +4.0 _d 0*ECM2*e12loc**2 & +2.0 _d 0*e11loc*e22loc*(1. _d 0-ECM2) IF ( DELT1 .LE. SEAICE_EPS_SQ ) THEN DELT2=SEAICE_EPS ELSE DELT2=SQRT(DELT1) ENDIF ZETA(I,J,bi,bj) = 0.5 _d 0*PRESS0(I,J,bi,bj)/DELT2 C NOW PUT MIN AND MAX VISCOSITIES IN ZETA(I,J,bi,bj) = MIN(ZMAX(I,J,bi,bj),ZETA(I,J,bi,bj)) ZETA(I,J,bi,bj) = MAX(ZMIN(I,J,bi,bj),ZETA(I,J,bi,bj)) C NOW SET VISCOSITIES TO ZERO AT HEFFMFLOW PTS ZETA(I,J,bi,bj) = ZETA(I,J,bi,bj)*HEFFM(I,J,bi,bj) ETA(I,J,bi,bj) = ECM2*ZETA(I,J,bi,bj) PRESS(I,J,bi,bj) = 2.0 _d 0*ZETA(I,J,bi,bj)*DELT2 ENDDO ENDDO DO j=1,sNy DO i=1,sNx C NOW SET UP NON-LINEAR WATER DRAG, FORCEX, FORCEY TEMPVAR=(uIce(I,J,bi,bj)-GWATX(I,J,bi,bj))**2 & +(vIce(I,J,bi,bj)-GWATY(I,J,bi,bj))**2 IF ( YC(I,J,bi,bj) .LT. ZERO ) THEN IF ( TEMPVAR .LE. (QUART/SEAICE_waterDrag_south)**2 ) THEN DWATN(I,J,bi,bj)=QUART ELSE DWATN(I,J,bi,bj)=SEAICE_waterDrag_south*SQRT(TEMPVAR) ENDIF ELSE IF ( TEMPVAR .LE. (QUART/SEAICE_waterDrag)**2 ) THEN DWATN(I,J,bi,bj)=QUART ELSE DWATN(I,J,bi,bj)=SEAICE_waterDrag*SQRT(TEMPVAR) ENDIF ENDIF C NOW SET UP SYMMETTRIC DRAG DRAGS(I,J,bi,bj)=DWATN(I,J,bi,bj)*COSWAT C NOW SET UP ANTI SYMMETTRIC DRAG PLUS CORIOLIS DRAGA(I,J,bi,bj)=DWATN(I,J,bi,bj) & *SIGN(SINWAT, _fCori(I,J,bi,bj)) & + AMASS(I,J,bi,bj) * _fCoriG(I,J,bi,bj) C NOW ADD IN CURRENT FORCE FORCEX(I,J,bi,bj)=FORCEX0(I,J,bi,bj)+DWATN(I,J,bi,bj) & *(COSWAT*GWATX(I,J,bi,bj) & -SIGN(SINWAT, _fCori(I,J,bi,bj))*GWATY(I,J,bi,bj)) FORCEY(I,J,bi,bj)=FORCEY0(I,J,bi,bj)+DWATN(I,J,bi,bj) & *(SIGN(SINWAT, _fCori(I,J,bi,bj))*GWATX(I,J,bi,bj) & +COSWAT*GWATY(I,J,bi,bj)) #ifndef SEAICE_LSRBNEW C NOW CALCULATE PRESSURE FORCE AND ADD TO EXTERNAL FORCE C only for old code, in the new code the pressure force C is added to the rhs stress tensor terms FORCEX(I,J,bi,bj)=FORCEX(I,J,bi,bj) & -QUART * _recip_dxV(I,J,bi,bj) & *(PRESS(I, J,bi,bj) + PRESS(I, J-1,bi,bj) & - PRESS(I-1,J,bi,bj) - PRESS(I-1,J-1,bi,bj)) FORCEY(I,J,bi,bj)=FORCEY(I,J,bi,bj) & -QUART * _recip_dyU(I,J,bi,bj) & *(PRESS(I,J, bi,bj) + PRESS(I-1,J, bi,bj) & - PRESS(I,J-1,bi,bj) - PRESS(I-1,J-1,bi,bj)) #endif /* not SEAICE_LSRBNEW */ FORCEX(I,J,bi,bj)=FORCEX(I,J,bi,bj) & +AMASS(I,J,bi,bj)/SEAICE_deltaTdyn*uIceNm1(I,J,bi,bj) FORCEY(I,J,bi,bj)=FORCEY(I,J,bi,bj) & +AMASS(I,J,bi,bj)/SEAICE_deltaTdyn*vIceNm1(I,J,bi,bj) FORCEX(I,J,bi,bj)=FORCEX(I,J,bi,bj)*UVM(I,J,bi,bj) FORCEY(I,J,bi,bj)=FORCEY(I,J,bi,bj)*UVM(I,J,bi,bj) ENDDO ENDDO ENDDO ENDDO #ifdef SEAICE_LSRBNEW DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) C coefficients for matrices DO j=1-OLy,sNy+OLy-1 DO i=1-OLx+1,sNx+OLx-1 etaU(I,J) = 0.5 _d 0 * ( & + eta(I,J,bi,bj) + eta(I-1,J,bi,bj) ) zetaU(I,J)= 0.5 _d 0 *( & + zeta(I,J,bi,bj) + zeta(I-1,J,bi,bj) ) ENDDO ENDDO DO j=1-OLy+1,sNy+OLy-1 DO i=1-OLx,sNx+OLx-1 etaV(I,J) = 0.5 _d 0 * ( & + eta(I,J,bi,bj) + eta(I,J-1,bi,bj) ) zetaV(I,J)= 0.5 _d 0 *( & + zeta(I,J,bi,bj) + zeta(I,J-1,bi,bj) ) ENDDO ENDDO C coefficients of uIce(I,J) and vIce(I,J) belonging to ... DO J=1,sNy DO I=0,sNx C ... d/dx (eta+zeta) d/dx u UXX(I,J) = _dyC(I,J,bi,bj) * (zetaV(I,J)+etaV(I,J)) & * _recip_dxG(I,J,bi,bj) C ... d/dx (zeta-eta) k1 u UXM(I,J) = _dyC(I,J,bi,bj) * (zetaV(I,J)-etaV(I,J)) & * k1AtV(I,J,bi,bj) * 0.5 _d 0 ENDDO ENDDO DO J=0,sNy DO I=1,sNx C ... d/dy eta d/dy u UYY(I,J) = _dxC(I,J,bi,bj) * etaU(I,J) & * _recip_dyG(I,J,bi,bj) C ... d/dy eta k2 u UYM(I,J) = _dxC(I,J,bi,bj) * etaU(I,J) & * k2AtU(I,J,bi,bj) * 0.5 _d 0 ENDDO ENDDO DO J=1,sNy DO I=0,sNx C ... d/dx eta dv/dx VXX(I,J) = _dyC(I,J,bi,bj) * etaV(I,J) & * _recip_dxG(I,J,bi,bj) C ... d/dx eta k1 v VXM(I,J) = _dyC(I,J,bi,bj) * etaV(I,J) & * k1AtV(I,J,bi,bj) * 0.5 _d 0 ENDDO ENDDO DO J=0,sNy DO I=1,sNx C ... d/dy eta+zeta dv/dy VYY(I,J) = _dxC(I,J,bi,bj) * (zetaU(I,J)+etaU(I,J)) & * _recip_dyG(I,J,bi,bj) C ... d/dy (zeta-eta) k2 v VYM(I,J) = _dxC(I,J,bi,bj) * (zetaU(I,J)-etaU(I,J)) & * k2AtU(I,J,bi,bj) * 0.5 _d 0 ENDDO ENDDO C assemble coefficient matrix of uIce C beware of sign convention: because this C is the left hand side we calculate -grad(sigma), but the coefficients C of U(I,J+/-1) are counted on the right hand side DO J=1,sNy DO I=1,sNx C coefficients for uIce(I-1,J) AU(I,J,bi,bj)= ( - UXX(I-1,J) + UXM(I-1,J) ) & * UVM(I,J,bi,bj) C coefficients for uIce(I+1,J) CU(I,J,bi,bj)= ( - UXX(I ,J) - UXM(I ,J) ) & * UVM(I,J,bi,bj) C coefficients for uIce(I,J) BU(I,J,bi,bj)=(ONE - UVM(I,J,bi,bj)) + & ( UXX(I-1,J) + UXX(I,J) + UYY(I,J-1) + UYY(I,J) & + UXM(I-1,J) - UXM(I,J) - UYM(I,J-1) + UYM(I,J) & ) * UVM(I,J,bi,bj) C coefficients of uIce(I,J-1) uRt1(I,J,bi,bj)= UYY(I,J-1) + UYM(I,J-1) C coefficients of uIce(I,J+1) uRt2(I,J,bi,bj)= UYY(I,J ) - UYM(I,J ) ENDDO ENDDO C now we need to normalize everything by the grid cell area DO J=1,sNy DO I=1,sNx AU(I,J,bi,bj) = AU(I,J,bi,bj) * recip_rAz(I,J,bi,bj) CU(I,J,bi,bj) = CU(I,J,bi,bj) * recip_rAz(I,J,bi,bj) C here we need add in the contribution from the time derivative C and the symmetric drag term; must be done after normalizing BU(I,J,bi,bj) = BU(I,J,bi,bj) * recip_rAz(I,J,bi,bj) & + UVM(I,J,bi,bj) * & ( AMASS(I,J,bi,bj)/SEAICE_deltaTdyn & + DRAGS(I,J,bi,bj) ) uRt1(I,J,bi,bj) = uRt1(I,J,bi,bj) * recip_rAz(I,J,bi,bj) uRt2(I,J,bi,bj) = uRt2(I,J,bi,bj) * recip_rAz(I,J,bi,bj) ENDDO ENDDO C assemble coefficient matrix of vIce C beware of sign convention: because this C is the left hand side we calculate -grad(sigma), but the coefficients C of V(I,J+/-1) are counted on the right hand side DO J=1,sNy DO I=1,sNx C coefficients for vIce(I,J-1) AV(I,J,bi,bj)=( - VYY(I,J-1) + VYM(I,J-1) & ) * UVM(I,J,bi,bj) C coefficients for vIce(I,J+1) CV(I,J,bi,bj)=( - VYY(I,J ) - VYM(I,J ) & ) * UVM(I,J,bi,bj) C coefficients for vIce(I,J) BV(I,J,bi,bj)= (ONE - UVM(I,J,bi,bj)) + & ( VXX(I,J) + VXX(I-1,J) + VYY(I,J) + VYY(I,J-1) & + VXM(I,J) - VXM(I-1,J) - VYM(I,J) + VYM(I,J-1) & ) * UVM(I,J,bi,bj) C coefficients for V(I-1,J) vRt1(I,J,bi,bj) = VXX(I-1,J) + VXM(I-1,J) C coefficients for V(I+1,J) vRt2(I,J,bi,bj) = VXX(I ,J) - VXM(I ,J) ENDDO ENDDO C now we need to normalize everything by the grid cell area DO J=1,sNy DO I=1,sNx AV(I,J,bi,bj) = AV(I,J,bi,bj) * recip_rAz(I,J,bi,bj) CV(I,J,bi,bj) = CV(I,J,bi,bj) * recip_rAz(I,J,bi,bj) C here we need add in the contribution from the time derivative C and the symmetric drag term; must be done after normalizing BV(I,J,bi,bj) = BV(I,J,bi,bj) * recip_rAz(I,J,bi,bj) & + UVM(I,J,bi,bj) * & ( AMASS(I,J,bi,bj)/SEAICE_deltaTdyn & + DRAGS(I,J,bi,bj) ) vRt1(I,J,bi,bj) = vRt1(I,J,bi,bj) * recip_rAz(I,J,bi,bj) vRt2(I,J,bi,bj) = vRt2(I,J,bi,bj) * recip_rAz(I,J,bi,bj) ENDDO ENDDO C set up right-hand sides DO j=1,sNy DO i=0,sNx C at V-point sig11(I,J) = & (zetaV(I,J)-etaV(I,J)) & * (vcLoc(I,J,bi,bj)-vcLoc(I,J-1,bi,bj)) & * _recip_dyC(I,J,bi,bj) & + (zetaV(I,J)+etaV(I,J))*k2atV(I,J,bi,bj) & * 0.5 _d 0 * (vIceC(I,J,bi,bj)+vIceC(I+1,J,bi,bj)) & - 0.5 _d 0 * (PRESS(I,J,bi,bj)+PRESS(I,J-1,bi,bj)) sig12(I,J) = etaV(I,J) & * (ucLoc(I,J,bi,bj)-ucLoc(I,J-1,bi,bj)) & * _recip_dyC(I,J,bi,bj) & - etaV(I,J) * k2AtV(I,J,bi,bj) & * 0.5 _d 0 * (uIceC(I,J,bi,bj)+uIceC(I+1,J,bi,bj)) ENDDO ENDDO DO j=0,sNy DO i=1,sNx C at U-point sig22(I,J) = & (zetaU(I,J)-etaU(I,J)) & * (ucLoc(I,J,bi,bj)-ucLoc(I-1,J,bi,bj)) & * _recip_dxC(I,J,bi,bj) & + (zetaU(I,J)+etaU(I,J))*k2atU(I,J,bi,bj) & * 0.5 _d 0 * (uIceC(I,J,bi,bj)+uIceC(I,J+1,bi,bj)) & - 0.5 _d 0 * (PRESS(I,J,bi,bj)+PRESS(I-1,J,bi,bj)) sig21(I,J) = etaU(I,J) & * (vcLoc(I,J,bi,bj)-vcLoc(I-1,J,bi,bj)) & * _recip_dxC(I,J,bi,bj) & - etaU(I,J) * k1AtU(I,J,bi,bj) & * 0.5 _d 0 * (vIceC(I,J,bi,bj)+vIceC(I,J+1,bi,bj)) ENDDO ENDDO DO j=1,sNy DO i=1,sNx rhsU(I,J,bi,bj) = DRAGA(I,J,bi,bj)*vIceC(I,J,bi,bj) & +FORCEX(I,J,bi,bj) & + ( _dyC(I, J, bi,bj) * sig11(I, J ) & - _dyC(I-1,J, bi,bj) * sig11(I-1,J ) & + _dxC(I, J, bi,bj) * sig21(I, J ) & - _dxC(I, J-1,bi,bj) * sig21(I, J-1) ) & * recip_rAz(I,J,bi,bj) * UVM(I,J,bi,bj) rhsV(I,J,bi,bj) = - DRAGA(I,J,bi,bj)*uIceC(I,J,bi,bj) & +FORCEY(I,J,bi,bj) & + ( _dyC(I, J, bi,bj) * sig12(I, J ) & - _dyC(I-1,J, bi,bj) * sig12(I-1,J ) & + _dxC(I, J, bi,bj) * sig22(I, J ) & - _dxC(I, J-1,bi,bj) * sig22(I, J-1) ) & * recip_rAz(I,J,bi,bj) * UVM(I,J,bi,bj) ENDDO ENDDO C bi/bj-loops ENDDO ENDDO C NOW DO ITERATION doIterate4u = .TRUE. doIterate4v = .TRUE. C ITERATION START ----------------------------------------------------- DO m = 1, SEAICElinearIterMax IF ( doIterate4u .OR. doIterate4v ) THEN IF ( useCubedSphereExchange ) THEN doIterate4u = .TRUE. doIterate4v = .TRUE. ENDIF DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) C-jmc: get less TAF warnings when always (no if doIterate) saving uIce,vIce: C save uIce prior to iteration, NOW SET U(3)=U(1) DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx uTmp(I,J,bi,bj)=uIce(I,J,bi,bj) ENDDO ENDDO C save vIce prior to iteration, NOW SET V(3)=V(1) DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx vTmp(I,J,bi,bj)=vIce(I,J,bi,bj) ENDDO ENDDO IF ( doIterate4u ) THEN C Solve for uIce : DO J=1,sNy DO I=1,sNx AA3 = ZERO IF (I.EQ.1) AA3 = AA3 - AU(I,J,bi,bj)*uIce(I-1,J,bi,bj) IF (I.EQ.sNx) AA3 = AA3 - CU(I,J,bi,bj)*uIce(I+1,J,bi,bj) URT(I,J)=rhsU(I,J,bi,bj) & + AA3 #ifdef SEAICE_VECTORIZE_LSR & + uRt1(I,J,bi,bj)*uTmp(I,J-1,bi,bj) & + uRt2(I,J,bi,bj)*uTmp(I,J+1,bi,bj) #else & + uRt1(I,J,bi,bj)*uIce(I,J-1,bi,bj) & + uRt2(I,J,bi,bj)*uIce(I,J+1,bi,bj) #endif /* SEAICE_VECTORIZE_LSR */ URT(I,J)=URT(I,J)* UVM(I,J,bi,bj) ENDDO DO I=1,sNx CUU(I,J)=CU(I,J,bi,bj) ENDDO CUU(1,J)=CUU(1,J)/BU(1,J,bi,bj) URT(1,J)=URT(1,J)/BU(1,J,bi,bj) #ifdef SEAICE_VECTORIZE_LSR ENDDO C start a new loop with reversed order to support automatic vectorization DO I=2,sNx IM=I-1 DO J=1,sNy #else /* do not SEAICE_VECTORIZE_LSR */ DO I=2,sNx IM=I-1 #endif /* SEAICE_VECTORIZE_LSR */ CUU(I,J)=CUU(I,J)/(BU(I,J,bi,bj)-AU(I,J,bi,bj)*CUU(IM,J)) URT(I,J)=(URT(I,J)-AU(I,J,bi,bj)*URT(IM,J)) & /(BU(I,J,bi,bj)-AU(I,J,bi,bj)*CUU(IM,J)) ENDDO #ifdef SEAICE_VECTORIZE_LSR ENDDO C go back to original order DO J=1,sNy #endif /* SEAICE_VECTORIZE_LSR */ DO I=1,sNx-1 J1=sNx-I J2=J1+1 URT(J1,J)=URT(J1,J)-CUU(J1,J)*URT(J2,J) ENDDO DO I=1,sNx uIce(I,J,bi,bj)=uTmp(I,J,bi,bj) & +WFAU*(URT(I,J)-uTmp(I,J,bi,bj)) ENDDO ENDDO C-- end doIterate4u ENDIF IF ( doIterate4v ) THEN C Solve for vIce DO I=1,sNx DO J=1,sNy AA3 = ZERO IF (J.EQ.1) AA3 = AA3 - AV(I,J,bi,bj)*vIce(I,J-1,bi,bj) IF (J.EQ.sNy) AA3 = AA3 - CV(I,J,bi,bj)*vIce(I,J+1,bi,bj) VRT(I,J)=rhsV(I,J,bi,bj) & + AA3 #ifdef SEAICE_VECTORIZE_LSR & + vRt1(I,J,bi,bj)*vTmp(I-1,J,bi,bj) & + vRt2(I,J,bi,bj)*vTmp(I+1,J,bi,bj) #else & + vRt1(I,J,bi,bj)*vIce(I-1,J,bi,bj) & + vRt2(I,J,bi,bj)*vIce(I+1,J,bi,bj) #endif /* SEAICE_VECTORIZE_LSR */ VRT(I,J)=VRT(I,J)* UVM(I,J,bi,bj) ENDDO DO J=1,sNy CVV(I,J)=CV(I,J,bi,bj) ENDDO CVV(I,1)=CVV(I,1)/BV(I,1,bi,bj) VRT(I,1)=VRT(I,1)/BV(I,1,bi,bj) DO J=2,sNy JM=J-1 CVV(I,J)=CVV(I,J)/(BV(I,J,bi,bj)-AV(I,J,bi,bj)*CVV(I,JM)) VRT(I,J)=(VRT(I,J)-AV(I,J,bi,bj)*VRT(I,JM)) & /(BV(I,J,bi,bj)-AV(I,J,bi,bj)*CVV(I,JM)) ENDDO DO J=1,sNy-1 J1=sNy-J J2=J1+1 VRT(I,J1)=VRT(I,J1)-CVV(I,J1)*VRT(I,J2) ENDDO DO J=1,sNy vIce(I,J,bi,bj)=vTmp(I,J,bi,bj) & +WFAV*(VRT(I,J)-vTmp(I,J,bi,bj)) ENDDO ENDDO C-- end doIterate4v ENDIF C end bi,bj-loops ENDDO ENDDO IF ( doIterate4u.AND.MOD(m,SOLV_NCHECK).EQ.0) THEN S1=ZERO DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx UERR=(uIce(I,J,bi,bj)-uTmp(I,J,bi,bj)) & * UVM(I,J,bi,bj) S1=MAX(ABS(UERR),S1) ENDDO ENDDO ENDDO ENDDO _GLOBAL_MAX_RL( S1, myThid ) c WRITE(standardMessageUnit,'(A,2I6,1P4E16.9)') c & ' U iters,error,WF = ',ilcall,M,S1,S1A,WFAU C SAFEGUARD AGAINST BAD FORCING ETC IF(m.GT.1.AND.S1.GT.S1A) WFAU=WFAU2 S1A=S1 IF(S1.LT.LSR_ERROR) THEN ICOUNT1=m doIterate4u = .FALSE. ENDIF ENDIF IF ( doIterate4v.AND.MOD(m,SOLV_NCHECK).EQ.0) THEN S2=ZERO DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx UERR=(vIce(I,J,bi,bj)-vTmp(I,J,bi,bj)) & * UVM(I,J,bi,bj) S2=MAX(ABS(UERR),S2) ENDDO ENDDO ENDDO ENDDO _GLOBAL_MAX_RL( S2, myThid ) C SAFEGUARD AGAINST BAD FORCING ETC IF(m.GT.1.AND.S2.GT.S2A) WFAV=WFAV2 S2A=S2 IF(S2.LT.LSR_ERROR) THEN ICOUNT2=m doIterate4v = .FALSE. ENDIF ENDIF CALL EXCH_UV_XY_RL( uIce, vIce,.TRUE.,myThid) C-- end doIterate4u or doIterate4v ENDIF ENDDO C ITERATION END ----------------------------------------------------- #ifdef ALLOW_DEBUG IF ( debugLevel .GE. debLevD ) THEN WRITE(msgBuf,'(A,I3,A)') & 'Uice post iter (SEAICE_LSR', MOD(ilcall,1000), ')' CALL DEBUG_STATS_RL( 1, uIce, msgBuf, myThid ) WRITE(msgBuf,'(A,I3,A)') & 'Vice post iter (SEAICE_LSR', MOD(ilcall,1000), ')' CALL DEBUG_STATS_RL( 1, vIce, msgBuf, myThid ) ENDIF #endif /* ALLOW_DEBUG */ IF ( doIterate4u .OR. doIterate4v ) THEN WRITE(msgBuf,'(2A,I10,A,I4,A)') '** WARNING ** SEAICE_LSR ', & '(it=', -9999, ',', ilcall,') did not converge :' CALL PRINT_MESSAGE( msgBuf, errorMessageUnit, & SQUEEZE_RIGHT, myThid ) WRITE(msgBuf,'(2(A,I6,0PF6.3,1PE14.6))') & ' nIt,wFU,dU=', ICOUNT1, WFAU, S1, & ' ; nIt,wFV,dV=', ICOUNT2, WFAV, S2 CALL PRINT_MESSAGE( msgBuf, errorMessageUnit, & SQUEEZE_RIGHT, myThid ) ENDIF #else /* SEAICE_LSRBNEW */ C SOLVE FOR UICE #ifdef ALLOW_AUTODIFF_TAMC cph That is an important one! Note, that cph * lsr is called twice, thus the icall index cph * this storing is still outside the iteration loop CADJ STORE uice = comlev1_dynsol, CADJ & key = ikey_dynamics + (ilcall-1)*nchklev_1 CADJ STORE vice = comlev1_dynsol, CADJ & key = ikey_dynamics + (ilcall-1)*nchklev_1 #endif /* ALLOW_AUTODIFF_TAMC */ DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO j=1-OLy,sNy+OLy DO i=1-OLx,sNx+OLx etaPlusZeta(I,J,bi,bj) = ETA(I,J,bi,bj)+ZETA(I,J,bi,bj) zetaMinusEta(I,J,bi,bj) = ZETA(I,J,bi,bj)-ETA(I,J,bi,bj) ENDDO ENDDO DO j=1-OLy+1,sNy+OLy DO i=1-OLx+1,sNx+OLx ETAMEAN(I,J,bi,bj) =QUART*( & ETA(I,J-1,bi,bj) + ETA(I-1,J-1,bi,bj) & +ETA(I,J ,bi,bj) + ETA(I-1,J ,bi,bj)) ZETAMEAN(I,J,bi,bj)=QUART*( & ZETA(I,J-1,bi,bj) + ZETA(I-1,J-1,bi,bj) & +ZETA(I,J ,bi,bj) + ZETA(I-1,J ,bi,bj)) ENDDO ENDDO ENDDO ENDDO DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx AA1=( etaPlusZeta(I ,J-1,bi,bj) * _recip_dxF(I ,J-1,bi,bj) & +etaPlusZeta(I ,J ,bi,bj) * _recip_dxF(I ,J ,bi,bj) & )*0.5 _d 0 * _recip_dxV(I,J,bi,bj) * UVM(I,J,bi,bj) AA2=( etaPlusZeta(I-1,J-1,bi,bj) * _recip_dxF(I-1,J-1,bi,bj) & +etaPlusZeta(I-1,J ,bi,bj) * _recip_dxF(I-1,J ,bi,bj) & )*0.5 _d 0 * _recip_dxV(I,J,bi,bj) * UVM(I,J,bi,bj) AA3= 0.5 _d 0 *(ETA(I-1,J ,bi,bj)+ETA(I,J ,bi,bj)) AA4= 0.5 _d 0 *(ETA(I-1,J-1,bi,bj)+ETA(I,J-1,bi,bj)) AA5= -(AA3-AA4) * _tanPhiAtV(I,J,bi,bj) & * _recip_dyU(I,J,bi,bj)*recip_rSphere AA6=TWO*ETAMEAN(I,J,bi,bj) *recip_rSphere*recip_rSphere & * _tanPhiAtV(I,J,bi,bj) * _tanPhiAtV(I,J,bi,bj) AU(I,J,bi,bj)=-AA2 CU(I,J,bi,bj)=-AA1 BU(I,J,bi,bj)=(ONE-UVM(I,J,bi,bj)) & - AU(I,J,bi,bj) - CU(I,J,bi,bj) & + ((AA3+AA4)*_recip_dyU(I,J,bi,bj)*_recip_dyU(I,J,bi,bj) & + AA5 + AA6 & + AMASS(I,J,bi,bj)/SEAICE_deltaTdyn & + DRAGS(I,J,bi,bj) & )*UVM(I,J,bi,bj) END DO END DO DO J=1,sNy AU(1,J,bi,bj)=ZERO CU(sNx,J,bi,bj)=ZERO CU(1,J,bi,bj)=CU(1,J,bi,bj)/BU(1,J,bi,bj) END DO C now set up right-hand side DO J=1-OLy,sNy+OLy-1 DO I=1-OLx,sNx+OLx-1 dVdy(I,J) = 0.5 _d 0 * ( & ( VICEC(I+1,J+1,bi,bj) - VICEC(I+1,J ,bi,bj) ) & * _recip_dyG(I+1,J,bi,bj) & +(VICEC(I ,J+1,bi,bj) - VICEC(I ,J ,bi,bj) ) & * _recip_dyG(I, J,bi,bj) ) dVdx(I,J) = 0.5 _d 0 * ( & ( VICEC(I+1,J+1,bi,bj) - VICEC(I ,J+1,bi,bj) ) & * _recip_dxG(I,J+1,bi,bj) & +(VICEC(I+1,J ,bi,bj) - VICEC(I ,J ,bi,bj) ) & * _recip_dxG(I,J, bi,bj) ) ENDDO ENDDO #ifdef SEAICE_TEST DO j=1-OLy,sNy+OLy-1 DO i=1-OLx,sNx+OLx-1 vz(i,j) = quart * ( & vicec(i,j,bi,bj) + vicec(i+1,j,bi,bj) ) vz(i,j)= vz(i,j) + quart * ( & vicec(i,j+1,bi,bj) + vicec(i+1,j+1,bi,bj) ) ENDDO ENDDO #endif DO J=1,sNy DO I=1,sNx rhsU(I,J,bi,bj)=DRAGA(I,J,bi,bj)*VICEC(I,J,bi,bj) & +FORCEX(I,J,bi,bj) #ifdef SEAICE_TEST & + ( 0.5 _d 0 * & (zetaMinusEta(i,j,bi,bj)+zetaMinusEta(i,j-1,bi,bj)) & *(vz(i,j)-vz(i,j-1)) * _recip_dyC(i,j,bi,bj) & - 0.5 _d 0 * & (zetaMinusEta(i-1,j,bi,bj)+zetaMinusEta(i-1,j-1,bi,bj)) & *(vz(i-1,j)-vz(i-1,j-1)) * _recip_dyC(i-1,j,bi,bj) & ) * _recip_dxV(i,j,bi,bj) #else & + ( zetaMinusEta(I ,J ,bi,bj) * dVdy(I ,J ) & + zetaMinusEta(I ,J-1,bi,bj) * dVdy(I ,J-1) & - zetaMinusEta(I-1,J ,bi,bj) * dVdy(I-1,J ) & - zetaMinusEta(I-1,J-1,bi,bj) * dVdy(I-1,J-1) & )* 0.5 _d 0 * _recip_dxV(I,J,bi,bj) #endif & & + ( ETA (I ,J ,bi,bj) * dVdx(I ,J ) & + ETA (I-1,J ,bi,bj) * dVdx(I-1,J ) & - ETA (I ,J-1,bi,bj) * dVdx(I ,J-1) & - ETA (I-1,J-1,bi,bj) * dVdx(I-1,J-1) & ) * 0.5 _d 0 * _recip_dyU(I,J,bi,bj) & & -(etaPlusZeta(I ,J ,bi,bj)+etaPlusZeta(I ,J-1,bi,bj) & -etaPlusZeta(I-1,J-1,bi,bj)-etaPlusZeta(I-1,J ,bi,bj)) & * VICEC(I,J,bi,bj) & * _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dxV(I,J,bi,bj)*recip_rSphere & & -(ETAMEAN(I,J,bi,bj)+ZETAMEAN(I,J,bi,bj)) & *(VICEC(I+1,J,bi,bj) - VICEC(I-1,J,bi,bj)) & * _tanPhiAtV(I,J,bi,bj) & * 1.0 _d 0 /( _dxG(I,J,bi,bj) + _dxG(I-1,J,bi,bj) ) & *recip_rSphere & & -ETAMEAN(I,J,bi,bj) & *(VICEC(I+1,J,bi,bj) - VICEC(I-1,J,bi,bj)) & *TWO* _tanPhiAtV(I,J,bi,bj) & * 1.0 _d 0 /( _dxG(I,J,bi,bj) + _dxG(I-1,J,bi,bj) ) & *recip_rSphere URT1(I,J,bi,bj)= & 0.5 _d 0 * (ETA(I-1,J-1,bi,bj)+ETA(I,J-1,bi,bj)) & * _recip_dyU(I,J,bi,bj) * _recip_dyU(I,J,bi,bj) & - ETAMEAN(I,J,bi,bj) * _tanPhiAtV(I,J-1,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & + TWO*ETAMEAN(I,J,bi,bj) * _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere URT2(I,J,bi,bj)= & 0.5 _d 0 * (ETA(I-1,J,bi,bj)+ETA(I,J,bi,bj)) & * _recip_dyU(I,J,bi,bj) * _recip_dyU(I,J,bi,bj) & + ETAMEAN(I,J,bi,bj) * _tanPhiAtV(I,J+1,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & - TWO*ETAMEAN(I,J,bi,bj) * _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere END DO END DO ENDDO ENDDO C NOW DO ITERATION cph--- iteration starts here cph--- need to kick out goto phexit = -1 C ITERATION START ----------------------------------------------------- #ifdef ALLOW_AUTODIFF_TAMC CADJ LOOP = iteration uice #endif /* ALLOW_AUTODIFF_TAMC */ DO M=1, SEAICElinearIterMax IF ( phexit .EQ. -1 ) THEN DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) C NOW SET U(3)=U(1) DO J=1,sNy DO I=1,sNx UTMP(I,J,bi,bj)=UICE(I,J,bi,bj) END DO END DO DO J=1,sNy DO I=1,sNx IF(I.EQ.1) THEN AA2=(etaPlusZeta(I-1,J-1,bi,bj) * _recip_dxF(I-1,J-1,bi,bj) & +etaPlusZeta(I-1,J ,bi,bj) * _recip_dxF(I-1,J ,bi,bj) & )*0.5 _d 0 * _recip_dxV(I,J,bi,bj) AA3=AA2*UICE(I-1,J,bi,bj)*UVM(I,J,bi,bj) ELSE IF(I.EQ.sNx) THEN AA1=(etaPlusZeta(I ,J-1,bi,bj) * _recip_dxF(I ,J-1,bi,bj) & +etaPlusZeta(I ,J ,bi,bj) * _recip_dxF(I ,J ,bi,bj) & )*0.5 _d 0 * _recip_dxV(I,J,bi,bj) AA3=AA1*UICE(I+1,J,bi,bj)*UVM(I,J,bi,bj) ELSE AA3=ZERO END IF URT(I)=rhsU(I,J,bi,bj)+AA3 & +URT1(I,J,bi,bj)*UICE(I,J-1,bi,bj) & +URT2(I,J,bi,bj)*UICE(I,J+1,bi,bj) URT(I)=URT(I)*UVM(I,J,bi,bj) END DO DO I=1,sNx CUU(I)=CU(I,J,bi,bj) END DO URT(1)=URT(1)/BU(1,J,bi,bj) DO I=2,sNx IM=I-1 CUU(I)=CUU(I)/(BU(I,J,bi,bj)-AU(I,J,bi,bj)*CUU(IM)) URT(I)=(URT(I)-AU(I,J,bi,bj)*URT(IM)) & /(BU(I,J,bi,bj)-AU(I,J,bi,bj)*CUU(IM)) END DO DO I=1,sNx-1 J1=sNx-I J2=J1+1 URT(J1)=URT(J1)-CUU(J1)*URT(J2) END DO DO I=1,sNx UICE(I,J,bi,bj)=UTMP(I,J,bi,bj) & +WFAU*(URT(I)-UTMP(I,J,bi,bj)) END DO END DO ENDDO ENDDO IF(MOD(M,SOLV_NCHECK).EQ.0) THEN S1=ZERO DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx UERR=(UICE(I,J,bi,bj)-UTMP(I,J,bi,bj)) & *UVM(I,J,bi,bj) S1=MAX(ABS(UERR),S1) END DO END DO ENDDO ENDDO _GLOBAL_MAX_RL( S1, myThid ) C SAFEGUARD AGAINST BAD FORCING ETC IF(M.GT.1.AND.S1.GT.S1A) WFAU=WFAU2 S1A=S1 IF(S1.LT.LSR_ERROR) THEN ICOUNT1=M phexit = 1 END IF END IF _EXCH_XY_RL( UICE, myThid ) ENDIF ENDDO C ITERATION END ----------------------------------------------------- IF ( debugLevel .GE. debLevC ) THEN _BEGIN_MASTER( myThid ) write(*,'(A,I6,1P2E22.14)')' U lsr iters, error = ',ICOUNT1,S1 _END_MASTER( myThid ) ENDIF C NOW FOR VICE DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx AA1=0.5 _d 0 * _recip_dyU(I,J,bi,bj) * _recip_dyU(I,J,bi,bj) & * (etaPlusZeta(I-1,J ,bi,bj) + etaPlusZeta(I,J ,bi,bj)) AA2=0.5 _d 0 * _recip_dyU(I,J,bi,bj) * _recip_dyU(I,J,bi,bj) & * (etaPlusZeta(I-1,J-1,bi,bj) + etaPlusZeta(I,J-1,bi,bj)) AA3= (ETA(I ,J-1,bi,bj) * _recip_dxV(I,J,bi,bj) & +ETA(I ,J ,bi,bj) * _recip_dxV(I,J,bi,bj) & )* 0.5 _d 0 * _recip_dxV(I,J,bi,bj) AA4= (ETA(I-1,J-1,bi,bj)+ETA(I-1,J,bi,bj))*0.5 _d 0 & *_recip_dxV(I,J,bi,bj) * _recip_dxV(I,J,bi,bj) AA5=(zetaMinusEta(I-1,J ,bi,bj) + zetaMinusEta(I,J ,bi,bj) & -zetaMinusEta(I-1,J-1,bi,bj) - zetaMinusEta(I,J-1,bi,bj) & )* _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere AA6=TWO*ETAMEAN(I,J,bi,bj) * recip_rSphere*recip_rSphere & * _tanPhiAtV(I,J,bi,bj) * _tanPhiAtV(I,J,bi,bj) AV(I,J,bi,bj)=( & - AA2 & - (ZETAMEAN(I,J,bi,bj)-ETAMEAN(I,J,bi,bj)) & * _tanPhiAtV(I,J-1,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & -ETAMEAN(I,J,bi,bj)*TWO* _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & )*UVM(I,J,bi,bj) CV(I,J,bi,bj)=( & -AA1 & +(ZETAMEAN(I,J,bi,bj)-ETAMEAN(I,J,bi,bj)) & * _tanPhiAtV(I,J+1,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & +ETAMEAN(I,J,bi,bj)*TWO* _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & )*UVM(I,J,bi,bj) BV(I,J,bi,bj)= (ONE-UVM(I,J,bi,bj)) & +( (AA1+AA2) + (AA3+AA4) + AA5 + AA6 & +AMASS(I,J,bi,bj)/SEAICE_deltaTdyn+DRAGS(I,J,bi,bj)) & *UVM(I,J,bi,bj) END DO END DO DO I=1,sNx AV(I,1,bi,bj)=ZERO CV(I,sNy,bi,bj)=ZERO CV(I,1,bi,bj)=CV(I,1,bi,bj)/BV(I,1,bi,bj) END DO C now set up right-hand-side DO J=1-OLy,sNy+OLy-1 DO I=1-OLx,sNx+OLx-1 dUdx(I,J) = 0.5 _d 0 * ( & ( UICEC(I+1,J+1,bi,bj) - UICEC(I ,J+1,bi,bj) ) & * _recip_dxG(I,J+1,bi,bj) & +(UICEC(I+1,J ,bi,bj) - UICEC(I ,J ,bi,bj) ) & * _recip_dxG(I,J ,bi,bj) ) dUdy(I,J) = 0.5 _d 0 * ( & ( UICEC(I+1,J+1,bi,bj) - UICEC(I+1,J ,bi,bj) ) & * _recip_dyG(I+1,J,bi,bj) & +(UICEC(I ,J+1,bi,bj) - UICEC(I ,J ,bi,bj) ) & * _recip_dyG(I, J,bi,bj) ) ENDDO ENDDO #ifdef SEAICE_TEST DO j=1-OLy,sNy+OLy-1 DO i=1-OLx,sNx+OLx-1 uz(i,j) = quart * ( & uicec(i,j,bi,bj) + uicec(i+1,j,bi,bj) ) uz(i,j)= uz(i,j) + quart * ( & uicec(i,j+1,bi,bj) + uicec(i+1,j+1,bi,bj) ) ENDDO ENDDO #endif DO J=1,sNy DO I=1,sNx rhsV(I,J,bi,bj)=-DRAGA(I,J,bi,bj)*UICEC(I,J,bi,bj) & +FORCEY(I,J,bi,bj) & #ifdef SEAICE_TEST & + ( 0.5 _d 0 * & (zetaMinusEta(i,j,bi,bj)+zetaMinusEta(i-1,j,bi,bj)) & *(uz(i,j)-uz(i-1,j)) * _recip_dxC(i,j,bi,bj) & - 0.5 _d 0 * & (zetaMinusEta(i,j-1,bi,bj)+zetaMinusEta(i-1,j-1,bi,bj)) & *(uz(i,j-1)-uz(i-1,j-1)) * _recip_dxC(i,j-1,bi,bj) & ) * _recip_dyU(i,j,bi,bj) #else & + ( zetaMinusEta(I ,J ,bi,bj) * dUdx(I ,J ) & + zetaMinusEta(I-1,J ,bi,bj) * dUdx(I-1,J ) & - zetaMinusEta(I ,J-1,bi,bj) * dUdx(I ,J-1) & - zetaMinusEta(I-1,J-1,bi,bj) * dUdx(I-1,J-1) & )* 0.5 _d 0 * _recip_dyU(I,J,bi,bj) #endif & & + ( ETA (I ,J ,bi,bj) * dUdy(I ,J ) & + ETA (I ,J-1,bi,bj) * dUdy(I ,J-1) & - ETA (I-1,J ,bi,bj) * dUdy(I-1,J ) & - ETA (I-1,J-1,bi,bj) * dUdy(I-1,J-1) & )*0.5 _d 0* _recip_dxV(I,J,bi,bj) & & +(ETA(I ,J ,bi,bj) + ETA(I ,J-1,bi,bj) & -ETA(I-1,J-1,bi,bj) - ETA(I-1,J ,bi,bj)) & * UICEC(I,J,bi,bj) & * _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dxV(I,J,bi,bj)*recip_rSphere & +ETAMEAN(I,J,bi,bj) * _tanPhiAtV(I,J,bi,bj) & *(UICEC(I+1,J,bi,bj)-UICEC(I-1,J,bi,bj)) & * 0.5 _d 0 * _recip_dxV(I,J,bi,bj)*recip_rSphere & & +ETAMEAN(I,J,bi,bj)*TWO * _tanPhiAtV(I,J,bi,bj) & *(UICEC(I+1,J,bi,bj)-UICEC(I-1,J,bi,bj)) & * 1. _d 0 /( _dxG(I,J,bi,bj) + _dxG(I-1,J,bi,bj)) & *recip_rSphere VRT1(I,J,bi,bj)= 0.5 _d 0 * ( & ETA(I-1,J-1,bi,bj) * _recip_dxV(I,J,bi,bj) & +ETA(I-1,J ,bi,bj) * _recip_dxV(I,J,bi,bj) & ) * _recip_dxV(I,J,bi,bj) VRT2(I,J,bi,bj)= 0.5 _d 0 * ( & ETA(I ,J-1,bi,bj) * _recip_dxV(I,J,bi,bj) & +ETA(I ,J ,bi,bj) * _recip_dxV(I,J,bi,bj) & ) * _recip_dxV(I,J,bi,bj) END DO END DO ENDDO ENDDO C NOW DO ITERATION cph--- iteration starts here cph--- need to kick out goto phexit = -1 C ITERATION START ----------------------------------------------------- #ifdef ALLOW_AUTODIFF_TAMC CADJ LOOP = iteration vice #endif /* ALLOW_AUTODIFF_TAMC */ DO M=1, SEAICElinearIterMax IF ( phexit .EQ. -1 ) THEN C NOW SET U(3)=U(1) DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx VTMP(I,J,bi,bj)=VICE(I,J,bi,bj) END DO END DO DO I=1,sNx DO J=1,sNy IF(J.EQ.1) THEN AA2= _recip_dyU(I,J,bi,bj) * _recip_dyU(I,J,bi,bj) & * 0.5 _d 0 *( & etaPlusZeta(I-1,J-1,bi,bj) + etaPlusZeta(I,J-1,bi,bj) & ) AA3=( AA2 & +( ZETAMEAN(I,J,bi,bj)-ETAMEAN(I,J,bi,bj) ) & * _tanPhiAtV(I,J-1,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & + ETAMEAN(I,J,bi,bj)*TWO* _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere ) & *VICE(I,J-1,bi,bj)*UVM(I,J,bi,bj) ELSE IF(J.EQ.sNy) THEN AA1= _recip_dyU(I,J,bi,bj) * _recip_dyU(I,J,bi,bj) & * 0.5 _d 0 * ( & etaPlusZeta(I-1,J,bi,bj) + etaPlusZeta(I,J,bi,bj) & ) AA3=( AA1 & -( ZETAMEAN(I,J,bi,bj)-ETAMEAN(I,J,bi,bj)) & * _tanPhiAtV(I,J+1,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere & - ETAMEAN(I,J,bi,bj)*TWO* _tanPhiAtV(I,J,bi,bj) & * 0.5 _d 0 * _recip_dyU(I,J,bi,bj)*recip_rSphere ) & *VICE(I,J+1,bi,bj)*UVM(I,J,bi,bj) ELSE AA3=ZERO END IF VRT(J)=rhsV(I,J,bi,bj)+AA3+VRT1(I,J,bi,bj)*VICE(I-1,J,bi,bj) & +VRT2(I,J,bi,bj)*VICE(I+1,J,bi,bj) VRT(J)=VRT(J)*UVM(I,J,bi,bj) END DO DO J=1,sNy CVV(J)=CV(I,J,bi,bj) END DO VRT(1)=VRT(1)/BV(I,1,bi,bj) DO J=2,sNy JM=J-1 CVV(J)=CVV(J)/(BV(I,J,bi,bj)-AV(I,J,bi,bj)*CVV(JM)) VRT(J)=(VRT(J)-AV(I,J,bi,bj)*VRT(JM)) & /(BV(I,J,bi,bj)-AV(I,J,bi,bj)*CVV(JM)) END DO DO J=1,sNy-1 J1=sNy-J J2=J1+1 VRT(J1)=VRT(J1)-CVV(J1)*VRT(J2) END DO DO J=1,sNy VICE(I,J,bi,bj)=VTMP(I,J,bi,bj) & +WFAV*(VRT(J)-VTMP(I,J,bi,bj)) END DO ENDDO ENDDO ENDDO IF(MOD(M,SOLV_NCHECK).EQ.0) THEN S2=ZERO DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1,sNy DO I=1,sNx UERR=(VICE(I,J,bi,bj)-VTMP(I,J,bi,bj)) & *UVM(I,J,bi,bj) S2=MAX(ABS(UERR),S2) END DO END DO ENDDO ENDDO _GLOBAL_MAX_RL( S2, myThid ) C SAFEGUARD AGAINST BAD FORCING ETC IF(M.GT.1.AND.S2.GT.S2A) WFAV=WFAV2 S2A=S2 IF(S2.LT.LSR_ERROR) THEN ICOUNT2=M phexit = 1 END IF END IF _EXCH_XY_RL( VICE, myThid ) ENDIF ENDDO C ITERATION END ----------------------------------------------------- IF ( debugLevel .GE. debLevC ) THEN _BEGIN_MASTER( myThid ) write(*,'(A,I6,1P2E22.14)')' V lsr iters, error = ',ICOUNT2,S2 _END_MASTER( myThid ) ENDIF #endif /* SEAICE_LSRBNEW */ C NOW END C NOW MAKE COROLIS TERM IMPLICIT DO bj=myByLo(myThid),myByHi(myThid) DO bi=myBxLo(myThid),myBxHi(myThid) DO J=1-OLy,sNy+OLy DO I=1-OLx,sNx+OLx UICE(I,J,bi,bj)=UICE(I,J,bi,bj)*UVM(I,J,bi,bj) VICE(I,J,bi,bj)=VICE(I,J,bi,bj)*UVM(I,J,bi,bj) END DO END DO ENDDO ENDDO #endif /* SEAICE_ALLOW_DYNAMICS */ #endif /* SEAICE_CGRID */ RETURN END