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cheapaml_init_fixed.F
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cheapaml_init_fixed.F
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#include "CHEAPAML_OPTIONS.h"
#undef CHEAPAML_OLD_MASK_SETTING
CBOP
C !ROUTINE: CHEAPAML_INIT_FIXED
C !INTERFACE:
SUBROUTINE CHEAPAML_INIT_FIXED( myThid )
C !DESCRIPTION: \bv
C *==========================================================*
C | SUBROUTINE CHEAPAML_INIT_FIXED
C *==========================================================*
C \ev
C !USES:
IMPLICIT NONE
C === Global variables ===
#include "EEPARAMS.h"
#include "SIZE.h"
#include "PARAMS.h"
#include "GRID.h"
#include "CHEAPAML.h"
C !INPUT/OUTPUT PARAMETERS:
C === Routine arguments ===
C myThid :: my Thread Id number
INTEGER myThid
C !FUNCTIONS
INTEGER ILNBLNK
EXTERNAL ILNBLNK
C !LOCAL VARIABLES:
C bi,bj :: tile indices
C i,j :: grid-point indices
C msgBuf :: Informational/error message buffer
C relaxMask :: relaxation mask [no units]
C xgs :: relaxation coefficient [units: 1/s]
INTEGER bi, bj
INTEGER i, j
INTEGER iG,jG
INTEGER xmw
_RL xmf, tmpVar
_RL relaxMask(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
_RL xgs (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
INTEGER iL, ioUnit
CHARACTER*(MAX_LEN_MBUF) msgBuf
#ifdef CHEAPAML_OLD_MASK_SETTING
_RL recipMW
_RL cheapaml_taurelax, cheapaml_taurelaxocean
#endif /* CHEAPAML_OLD_MASK_SETTING */
CEOP
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
ioUnit = standardMessageUnit
C-- Initialise CheapAML local & fixed variables
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
relaxMask(i,j,bi,bj) = 0. _d 0
xgs (i,j,bi,bj) = 0. _d 0
xrelf (i,j,bi,bj) = 0. _d 0
ENDDO
ENDDO
ENDDO
ENDDO
#ifdef CHEAPAML_OLD_MASK_SETTING
cheapaml_taurelax = cheap_tauRelax /86400. _d 0
cheapaml_taurelaxocean = cheap_tauRelaxOce/86400. _d 0
c-- Setup CheapAML mask (for relaxation):
C Do mask
IF ( cheapMaskFile .NE. ' ') THEN
iL = ILNBLNK(cheapMaskFile)
WRITE(msgBuf,'(4A)') 'CHEAPAML_INIT_VARIA: ',
& 'Relaxation Mask read from ->', cheapMaskFile(1:iL), '<-'
CALL PRINT_MESSAGE( msgBuf, ioUnit, SQUEEZE_RIGHT, myThid )
CALL READ_FLD_XY_RL( cheapMaskFile,' ',relaxMask,0,myThid )
ELSE
WRITE(msgBuf,'(4A)') 'CHEAPAML_INIT_VARIA: ',
& 'Generate Cheapaml mask'
CALL PRINT_MESSAGE( msgBuf, ioUnit, SQUEEZE_RIGHT, myThid )
xmw = Cheapaml_mask_width
recipMW = ( xmw - 1 )
IF ( xmw.NE.1 ) recipMW = 1. _d 0 / recipMW
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
DO j=1,sNy
DO i=1,sNx
xmf = 0. _d 0
iG=myXGlobalLo-1+(bi-1)*sNx+i
jG = myYGlobalLo-1+(bj-1)*sNy+j
IF (jG.GT.xmw) THEN
IF (jG.LT.Ny-xmw+1) THEN
IF (iG.LE.xmw) xmf = 1. _d 0 - (iG-1 )*recipMW
IF (iG.GE.Nx-xmw+1) xmf = 1. _d 0 - (Nx-iG)*recipMW
ELSE
xmf = 1. _d 0 - (Ny-jG)*recipMW
IF (iG.LE.xmw) THEN
xmf = 1. _d 0 - (iG-1 )*recipMW *(Ny-jG)*recipMW
ELSEIF (iG.GE.Nx-xmw+1) THEN
xmf = 1. _d 0 - (Nx-iG)*recipMW *(Ny-jG)*recipMW
ENDIF
ENDIF
ELSE
xmf = 1. _d 0 - (jG-1)*recipMW
IF (iG.LE.xmw) THEN
xmf = 1. _d 0 - (iG-1 )*recipMW*(jG-1)*recipMW
ELSEIF (iG.GE.Nx-xmw+1) THEN
xmf = 1. _d 0 - (Nx-iG)*recipMW*(jG-1)*recipMW
ENDIF
ENDIF
relaxMask(i,j,bi,bj) = xmf*cheapaml_taurelax
ENDDO
ENDDO
ENDDO
ENDDO
ENDIF
C relaxation forced on land
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
DO j=1,sNy
DO i=1,sNx
IF( maskC(i,j,1,bi,bj).EQ.0. _d 0) THEN
relaxMask(i,j,bi,bj)=cheapaml_taurelax
C relaxation over the ocean
ELSEIF( relaxMask(i,j,bi,bj).EQ.0. _d 0) THEN
relaxMask(i,j,bi,bj)=cheapaml_taurelaxocean
ENDIF
ENDDO
ENDDO
ENDDO
ENDDO
_EXCH_XY_RL( relaxMask, myThid )
C relaxation time scales from input
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
IF (relaxMask(i,j,bi,bj).NE.0.) THEN
xgs(i,j,bi,bj)=1. _d 0/relaxMask(i,j,bi,bj)/8.64 _d 4
ELSE
xgs(i,j,bi,bj)=0. _d 0
ENDIF
xrelf(i,j,bi,bj)= xgs(i,j,bi,bj)*deltaT
& /(1. _d 0+xgs(i,j,bi,bj)*deltaT)
ENDDO
ENDDO
ENDDO
ENDDO
c _EXCH_XY_RL( xgs, myThid )
c _EXCH_XY_RL( xrelf, myThid )
#else /* CHEAPAML_OLD_MASK_SETTING */
C-- Setup CheapAML mask (for relaxation):
IF ( cheapMaskFile .NE. ' ' ) THEN
C- read mask from file
iL = ILNBLNK(cheapMaskFile)
WRITE(msgBuf,'(4A)') 'CHEAPAML_INIT_VARIA: ',
& 'Relaxation Mask read from ->', cheapMaskFile(1:iL), '<-'
CALL PRINT_MESSAGE( msgBuf, ioUnit, SQUEEZE_RIGHT, myThid )
CALL READ_FLD_XY_RL( cheapMaskFile,' ',relaxMask,0,myThid )
ELSE
WRITE(msgBuf,'(4A)') 'CHEAPAML_INIT_VARIA: ',
& 'Generate Cheapaml mask'
CALL PRINT_MESSAGE( msgBuf, ioUnit, SQUEEZE_RIGHT, myThid )
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
C- set mask according to boundaries
IF ( Cheapaml_mask_width.LE.0 .OR.
& ( cheapamlXperiodic .AND. cheapamlYperiodic ) ) THEN
DO j=1,sNy
DO i=1,sNx
relaxMask(i,j,bi,bj) = 0.
ENDDO
ENDDO
ELSE
xmw = Cheapaml_mask_width
tmpVar = xmw
tmpVar = oneRL / tmpVar
DO j=1,sNy
DO i=1,sNx
xmf = 0. _d 0
iG = myXGlobalLo-1+(bi-1)*sNx+i
jG = myYGlobalLo-1+(bj-1)*sNy+j
IF ( .NOT.cheapamlXperiodic ) THEN
IF (iG.LE.xmw) xmf = oneRL - (iG-1 )*tmpVar
IF (iG.GE.Nx-xmw+1) xmf = oneRL - (Nx-iG)*tmpVar
ENDIF
IF ( .NOT.cheapamlYperiodic ) THEN
IF (jG.LE.xmw)
& xmf = MAX( xmf, oneRL - (jG-1 )*tmpVar )
IF (jG.GE.Ny-xmw+1)
& xmf = MAX( xmf, oneRL - (Ny-jG)*tmpVar )
ENDIF
relaxMask(i,j,bi,bj) = xmf
ENDDO
ENDDO
ENDIF
C- set mask to one over land:
DO j=1,sNy
DO i=1,sNx
relaxMask(i,j,bi,bj) = MAX( relaxMask(i,j,bi,bj),
& (oneRL - maskC(i,j,1,bi,bj)) )
ENDDO
ENDDO
ENDDO
ENDDO
ENDIF
_EXCH_XY_RL( relaxMask, myThid )
C- Set relaxation coeff "xgs"
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
IF ( cheap_tauRelax .LE. zeroRL ) THEN
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
xgs(i,j,bi,bj) = 0. _d 0
ENDDO
ENDDO
ELSE
tmpVar = oneRL/cheap_tauRelax
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
xgs(i,j,bi,bj) = relaxMask(i,j,bi,bj)*tmpVar
ENDDO
ENDDO
ENDIF
IF ( cheap_tauRelaxOce .GT. zeroRL
& .AND. cheapMaskFile .EQ. ' ' ) THEN
tmpVar = oneRL/cheap_tauRelaxOce
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
xgs(i,j,bi,bj) = MAX( xgs(i,j,bi,bj), tmpVar )
ENDDO
ENDDO
ENDIF
C- Calculate implicit relaxation factor "xrelf"
DO j=1-OLy,sNy+OLy
DO i=1-OLx,sNx+OLx
tmpVar = xgs(i,j,bi,bj)*deltaT
xrelf(i,j,bi,bj)= tmpVar/( oneRL + tmpVar )
ENDDO
ENDDO
ENDDO
ENDDO
#endif /* CHEAPAML_OLD_MASK_SETTING */
IF ( debugLevel.GE.debLevB .AND. nIter0.EQ.0 ) THEN
CALL WRITE_FLD_XY_RL('CheapMask', ' ', relaxMask, 0, myThid )
ENDIF
IF ( debugLevel.GE.debLevC .AND. nIter0.EQ.0 ) THEN
CALL WRITE_FLD_XY_RL('Cheap_xgs', ' ', xgs, 0, myThid )
CALL WRITE_FLD_XY_RL('Cheap_xrelf', ' ', xrelf, 0, myThid )
ENDIF
_BEGIN_MASTER( myThid )
C- Initialise AB starting level
cheapTairStartAB = nIter0
cheapQairStartAB = nIter0
cheapTracStartAB = nIter0
_END_MASTER( myThid )
C- Everyone else must wait for parameters to be set
_BARRIER
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
#ifdef ALLOW_MNC
c IF (useMNC) THEN
c ENDIF
#endif /* ALLOW_MNC */
#ifdef ALLOW_DIAGNOSTICS
IF ( useDiagnostics ) THEN
CALL CHEAPAML_DIAGNOSTICS_INIT( myThid )
ENDIF
#endif
RETURN
END