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SUBROUTINE LWB & |
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& ( KIDIA, KFDIA, KLON , KLEV , KMODE,& |
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& PDT0 , PTAVE, PTL,& |
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& PB , PBINT, PBSUR , PBTOP , PDBSL,& |
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& PGA , PGB , PGASUR, PGBSUR, PGATOP, PGBTOP & |
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& ) |
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!**** *LWB* - COMPUTES BLACK-BODY FUNCTIONS FOR LONGWAVE CALCULATIONS |
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! PURPOSE. |
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! -------- |
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! COMPUTES PLANCK FUNCTIONS |
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!** INTERFACE. |
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! ---------- |
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! EXPLICIT ARGUMENTS : |
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! -------------------- |
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! ==== INPUTS === |
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! PDT0 : (KLON) ; SURFACE TEMPERATURE DISCONTINUITY |
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! PTAVE : (KLON,KLEV) ; TEMPERATURE |
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! PTL : (KLON,KLEV+1) ; HALF LEVEL TEMPERATURE |
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! ==== OUTPUTS === |
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! PB : (KLON,NSIL,KLEV+1); SPECTRAL HALF LEVEL PLANCK FUNCTION |
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! PBINT : (KLON,KLEV+1) ; HALF LEVEL PLANCK FUNCTION |
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! PBSUR : (KLON,NSIL) ; SURFACE SPECTRAL PLANCK FUNCTION |
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! PBTOP : (KLON,NSIL) ; TOP SPECTRAL PLANCK FUNCTION |
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! PDBSL : (KLON,NSIL,KLEV*2); SUB-LAYER PLANCK FUNCTION GRADIENT |
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! PGA : (KLON,8,2,KLEV) ; dB/dT-weighted LAYER PADE APPROXIMANTS |
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! PGB : (KLON,8,2,KLEV) ; dB/dT-weighted LAYER PADE APPROXIMANTS |
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! PGASUR, PGBSUR (KLON,8,2) ; SURFACE PADE APPROXIMANTS |
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! PGATOP, PGBTOP (KLON,8,2) ; T.O.A. PADE APPROXIMANTS |
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! IMPLICIT ARGUMENTS : NONE |
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! -------------------- |
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! METHOD. |
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! ------- |
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! 1. COMPUTES THE PLANCK FUNCTION ON ALL LEVELS AND HALF LEVELS |
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! FROM A POLYNOMIAL DEVELOPMENT OF PLANCK FUNCTION |
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! EXTERNALS. |
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! ---------- |
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! NONE |
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! REFERENCE. |
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! ---------- |
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! SEE RADIATION'S PART OF THE MODEL'S DOCUMENTATION AND |
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! ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE IFS " |
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! AUTHOR. |
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! ------- |
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! JEAN-JACQUES MORCRETTE *ECMWF* |
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! MODIFICATIONS. |
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! -------------- |
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! ORIGINAL : 89-07-14 |
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! MODIFIED : 99-06-14 D.SALMOND Optimisation |
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! M.Hamrud 01-Oct-2003 CY28 Cleaning |
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!----------------------------------------------------------------------- |
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USE PARKIND1 ,ONLY : JPIM ,JPRB |
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USE YOMHOOK ,ONLY : LHOOK, DR_HOOK |
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USE YOELW , ONLY : MXIXT ,NSIL ,NIPD ,PDGA ,& |
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& PDGB ,TINTP ,TSTAND ,TSTP ,XP |
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IMPLICIT NONE |
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INTEGER(KIND=JPIM),INTENT(IN) :: KLON |
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INTEGER(KIND=JPIM),INTENT(IN) :: KLEV |
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INTEGER(KIND=JPIM),INTENT(IN) :: KIDIA |
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INTEGER(KIND=JPIM),INTENT(IN) :: KFDIA |
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INTEGER(KIND=JPIM),INTENT(IN) :: KMODE |
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REAL(KIND=JPRB) ,INTENT(IN) :: PDT0(KLON) |
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REAL(KIND=JPRB) ,INTENT(IN) :: PTAVE(KLON,KLEV) |
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REAL(KIND=JPRB) ,INTENT(IN) :: PTL(KLON,KLEV+1) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PB(KLON,NSIL,KLEV+1) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PBINT(KLON,KLEV+1) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PBSUR(KLON,NSIL) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PBTOP(KLON,NSIL) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PDBSL(KLON,NSIL,KLEV*2) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PGA(KLON,NIPD,2,KLEV) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PGB(KLON,NIPD,2,KLEV) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PGASUR(KLON,NIPD,2) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PGBSUR(KLON,NIPD,2) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PGATOP(KLON,NIPD,2) |
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REAL(KIND=JPRB) ,INTENT(OUT) :: PGBTOP(KLON,NIPD,2) |
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!----------------------------------------------------------------------- |
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!* 0.1 ARGUMENTS |
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! --------- |
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!------------------------------------------------------------------------- |
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! ------------ |
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INTEGER(KIND=JPIM) :: INDB(KLON) , INDS(KLON) |
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REAL(KIND=JPRB) :: ZBLAY(KLON,KLEV), ZBLEV(KLON,KLEV+1)& |
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& , ZRES(KLON) , ZRES2(KLON)& |
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& , ZTI(KLON) , ZTI2(KLON) |
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INTEGER(KIND=JPIM) :: ILEV2, INDSU, INDT, INDTO, INDTP, INUE, INUS,& |
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& IXTOX, IXTX, JF, JG, JK, JK1, JK2, JL, JNU |
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REAL(KIND=JPRB) :: ZDST1, ZDSTO1, ZDSTOX, ZDSTX |
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REAL(KIND=JPRB) :: ZHOOK_HANDLE |
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! ------------------------------------------------------------------ |
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!* 1.0 PLANCK FUNCTIONS AND GRADIENTS |
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! ------------------------------ |
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print *,'dans LWB' |
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IF (LHOOK) CALL DR_HOOK('LWB',0,ZHOOK_HANDLE) |
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ILEV2=2*KLEV |
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INUS=1 |
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INUE=NSIL |
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IF (KMODE == 2) THEN |
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INUS=3 |
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INUE=4 |
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ENDIF |
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DO JK = 1 , KLEV+1 |
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DO JL = KIDIA,KFDIA |
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PBINT(JL,JK) = 0.0_JPRB |
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ENDDO |
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ENDDO |
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DO JNU=1,NSIL |
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DO JL=KIDIA,KFDIA |
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PBSUR(JL,JNU)=0.0_JPRB |
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PBTOP(JL,JNU)=0.0_JPRB |
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ENDDO |
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DO JK=1,KLEV |
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DO JL=KIDIA,KFDIA |
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PB(JL,JNU,JK)=0.0_JPRB |
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ENDDO |
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ENDDO |
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DO JK=1,ILEV2 |
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DO JL=KIDIA,KFDIA |
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PDBSL(JL,JNU,JK)=0.0_JPRB |
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ENDDO |
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ENDDO |
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ENDDO |
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DO JNU=INUS,INUE |
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!* 1.1 LEVELS FROM SURFACE TO KLEV |
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! ---------------------------- |
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DO JK = 1 , KLEV |
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DO JL = KIDIA,KFDIA |
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ZTI(JL)=(PTL(JL,JK)-TSTAND)/TSTAND |
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ZRES(JL) = XP(1,JNU)+ZTI(JL)*(XP(2,JNU)+ZTI(JL)*(XP(3,JNU)& |
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& +ZTI(JL)*(XP(4,JNU)+ZTI(JL)*(XP(5,JNU)+ZTI(JL)*(XP(6,JNU)& |
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& ))))) |
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PBINT(JL,JK)=PBINT(JL,JK)+ZRES(JL) |
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PB(JL,JNU,JK)= ZRES(JL) |
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ZBLEV(JL,JK) = ZRES(JL) |
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ZTI2(JL)=(PTAVE(JL,JK)-TSTAND)/TSTAND |
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ZRES2(JL)=XP(1,JNU)+ZTI2(JL)*(XP(2,JNU)+ZTI2(JL)*(XP(3,JNU)& |
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& +ZTI2(JL)*(XP(4,JNU)+ZTI2(JL)*(XP(5,JNU)+ZTI2(JL)*(XP(6,& |
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& JNU)& |
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& ))))) |
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ZBLAY(JL,JK) = ZRES2(JL) |
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ENDDO |
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ENDDO |
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!* 1.2 TOP OF THE ATMOSPHERE AND SURFACE |
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! --------------------------------- |
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DO JL = KIDIA,KFDIA |
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ZTI(JL)=(PTL(JL,KLEV+1)-TSTAND)/TSTAND |
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ZTI2(JL) = (PTL(JL,1) + PDT0(JL) - TSTAND) / TSTAND |
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ZRES(JL) = XP(1,JNU)+ZTI(JL)*(XP(2,JNU)+ZTI(JL)*(XP(3,JNU)& |
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& +ZTI(JL)*(XP(4,JNU)+ZTI(JL)*(XP(5,JNU)+ZTI(JL)*(XP(6,JNU)& |
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& ))))) |
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ZRES2(JL) = XP(1,JNU)+ZTI2(JL)*(XP(2,JNU)+ZTI2(JL)*(XP(3,JNU)& |
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& +ZTI2(JL)*(XP(4,JNU)+ZTI2(JL)*(XP(5,JNU)+ZTI2(JL)*(XP(6,JNU)& |
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& ))))) |
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PBINT(JL,KLEV+1) = PBINT(JL,KLEV+1)+ZRES(JL) |
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PB(JL,JNU,KLEV+1)= ZRES(JL) |
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ZBLEV(JL,KLEV+1) = ZRES(JL) |
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PBTOP(JL,JNU) = ZRES(JL) |
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PBSUR(JL,JNU) = ZRES2(JL) |
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ENDDO |
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!* 1.3 GRADIENTS IN SUB-LAYERS |
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! ----------------------- |
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DO JK = 1 , KLEV |
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JK2 = 2 * JK |
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JK1 = JK2 - 1 |
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DO JL = KIDIA,KFDIA |
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PDBSL(JL,JNU,JK1) = ZBLAY(JL,JK ) - ZBLEV(JL,JK) |
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PDBSL(JL,JNU,JK2) = ZBLEV(JL,JK+1) - ZBLAY(JL,JK) |
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ENDDO |
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ENDDO |
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ENDDO |
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!* 2.0 CHOOSE THE RELEVANT SETS OF PADE APPROXIMANTS |
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! --------------------------------------------- |
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DO JL=KIDIA,KFDIA |
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ZDSTO1 = (PTL(JL,KLEV+1)-TINTP(1)) / TSTP |
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IXTOX = MAX( 1, MIN( MXIXT, INT( ZDSTO1 + 1.0_JPRB ) ) ) |
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ZDSTOX = (PTL(JL,KLEV+1)-TINTP(IXTOX))/TSTP |
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IF (ZDSTOX < 0.5_JPRB) THEN |
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INDTO=IXTOX |
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ELSE |
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INDTO=IXTOX+1 |
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ENDIF |
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INDB(JL)=INDTO |
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ZDST1 = (PTL(JL,1)-TINTP(1)) / TSTP |
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IXTX = MAX( 1, MIN( MXIXT, INT( ZDST1 + 1.0_JPRB ) ) ) |
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ZDSTX = (PTL(JL,1)-TINTP(IXTX))/TSTP |
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IF (ZDSTX < 0.5_JPRB) THEN |
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INDT=IXTX |
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ELSE |
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INDT=IXTX+1 |
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ENDIF |
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INDS(JL)=INDT |
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ENDDO |
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DO JF=1,2 |
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DO JG=1,NIPD |
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DO JL=KIDIA,KFDIA |
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INDSU=INDS(JL) |
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PGASUR(JL,JG,JF)=PDGA(INDSU,2*JG-1,JF) |
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PGBSUR(JL,JG,JF)=PDGB(INDSU,2*JG-1,JF) |
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INDTP=INDB(JL) |
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PGATOP(JL,JG,JF)=PDGA(INDTP,2*JG-1,JF) |
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PGBTOP(JL,JG,JF)=PDGB(INDTP,2*JG-1,JF) |
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ENDDO |
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ENDDO |
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ENDDO |
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DO JK=1,KLEV |
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DO JL=KIDIA,KFDIA |
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ZDST1 = (PTAVE(JL,JK)-TINTP(1)) / TSTP |
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IXTX = MAX( 1, MIN( MXIXT, INT( ZDST1 + 1.0_JPRB ) ) ) |
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ZDSTX = (PTAVE(JL,JK)-TINTP(IXTX))/TSTP |
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IF (ZDSTX < 0.5_JPRB) THEN |
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INDT=IXTX |
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ELSE |
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INDT=IXTX+1 |
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ENDIF |
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INDB(JL)=INDT |
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ENDDO |
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DO JF=1,2 |
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DO JL=KIDIA,KFDIA |
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INDT=INDB(JL) |
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DO JG=1,NIPD |
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PGA(JL,JG,JF,JK)=PDGA(INDT,2*JG,JF) |
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PGB(JL,JG,JF,JK)=PDGB(INDT,2*JG,JF) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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! ------------------------------------------------------------------ |
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IF (LHOOK) CALL DR_HOOK('LWB',1,ZHOOK_HANDLE) |
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END SUBROUTINE LWB |