rrtm_taumol12.F90

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!----------------------------------------------------------------------------
SUBROUTINE rrtm_taumol12 (KLEV,P_TAU,&
 & p_tauaerl,p_fac00,p_fac01,p_fac10,p_fac11,k_jp,k_jt,k_jt1,p_oneminus,&
 & p_colh2o,p_colco2,k_laytrop,p_selffac,p_selffrac,k_indself,pfrac)  

!     BAND 12:  1800-2080 cm-1 (low - H2O,CO2; high - nothing)

! Modifications
!        M.Hamrud      01-Oct-2003 CY28 Cleaning

!     D Salmond   2000-05-15 speed-up
!     JJMorcrette 2000-05-17 speed-up

USE parkind1  ,ONLY : jpim     ,jprb
USE yomhook   ,ONLY : lhook,   dr_hook

USE parrrtm  , ONLY : jplay  ,jpband  ,jpgpt  ,ng12 ,ngs11
USE yoerrtwn , ONLY :      nspa    
USE yoerrta12, ONLY : absa   ,fracrefa,selfref,strrat

!  Input
!#include "yoeratm.h"

!      REAL TAUAER(JPLAY)

IMPLICIT NONE

!  Output
INTEGER(KIND=JPIM),INTENT(IN)    :: KLEV 
REAL(KIND=JPRB)   ,INTENT(OUT)   :: P_TAU(jpgpt,jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_TAUAERL(jplay,jpband) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_FAC00(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_FAC01(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_FAC10(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_FAC11(jplay) 
INTEGER(KIND=JPIM),INTENT(IN)    :: K_JP(jplay) 
INTEGER(KIND=JPIM),INTENT(IN)    :: K_JT(jplay) 
INTEGER(KIND=JPIM),INTENT(IN)    :: K_JT1(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_ONEMINUS 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_COLH2O(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_COLCO2(jplay) 
INTEGER(KIND=JPIM),INTENT(IN)    :: K_LAYTROP 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_SELFFAC(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_SELFFRAC(jplay) 
INTEGER(KIND=JPIM),INTENT(IN)    :: K_INDSELF(jplay) 
REAL(KIND=JPRB)   ,INTENT(OUT)   :: PFRAC(jpgpt,jplay) 
!- from AER
!- from INTFAC      
!- from INTIND
!- from PRECISE             
!- from PROFDATA             
!- from SELF             
!- from SP             
INTEGER(KIND=JPIM) :: IJS(jplay)
REAL(KIND=JPRB) :: ZFS(jplay),Z_SPECCOMB(jplay)
INTEGER(KIND=JPIM) :: IND0(jplay),IND1(jplay),INDS(jplay)

INTEGER(KIND=JPIM) :: IG, JS, I_LAY

REAL(KIND=JPRB) :: Z_FAC000, Z_FAC001, Z_FAC010, Z_FAC011, Z_FAC100, Z_FAC101,&
 & Z_FAC110, Z_FAC111, Z_FS, Z_SPECMULT, Z_SPECPARM  
REAL(KIND=JPRB) :: ZHOOK_HANDLE

!      EQUIVALENCE (TAUAERL(1,12),TAUAER)

!     Compute the optical depth by interpolating in ln(pressure), 
!     temperature, and appropriate species.  Below LAYTROP, the water
!     vapor self-continuum is interpolated (in temperature) separately.  
IF (lhook) CALL dr_hook('RRTM_TAUMOL12',0,zhook_handle)
DO i_lay = 1, k_laytrop
  z_speccomb(i_lay) = p_colh2o(i_lay) + strrat*p_colco2(i_lay)
  z_specparm = p_colh2o(i_lay)/z_speccomb(i_lay)
  z_specparm=min(p_oneminus,z_specparm)
  z_specmult = 8._jprb*(z_specparm)
  js = 1 + int(z_specmult)
  z_fs = mod(z_specmult,1.0_jprb)
  ind0(i_lay) = ((k_jp(i_lay)-1)*5+(k_jt(i_lay)-1))*nspa(12) + js
  ind1(i_lay) = (k_jp(i_lay)*5+(k_jt1(i_lay)-1))*nspa(12) + js
  inds(i_lay) = k_indself(i_lay)

  zfs(i_lay)=z_fs
  ijs(i_lay)=js

ENDDO

!-- DS_000515
DO ig = 1, ng12
  DO i_lay = 1, k_laytrop
!-- DS_000515

    z_fs=zfs(i_lay)
    js=ijs(i_lay)
  
!----jjm        
!    FAC000 = (_ONE_ - FS) * FAC00(LAY)
!    FAC010 = (_ONE_ - FS) * FAC10(LAY)
!    FAC100 = FS * FAC00(LAY)
!    FAC110 = FS * FAC10(LAY)
!    FAC001 = (_ONE_ - FS) * FAC01(LAY)
!    FAC011 = (_ONE_ - FS) * FAC11(LAY)
!    FAC101 = FS * FAC01(LAY)
!    FAC111 = FS * FAC11(LAY)
!----
    p_tau(ngs11+ig,i_lay) = z_speccomb(i_lay) *&
     !-- DS_000515
     !     &(Z_FAC000 * ABSA(IND0(I_LAY)   ,IG) +&
     !     & Z_FAC100 * ABSA(IND0(I_LAY)+ 1,IG) +&
     !     & Z_FAC010 * ABSA(IND0(I_LAY)+ 9,IG) +&
     !     & Z_FAC110 * ABSA(IND0(I_LAY)+10,IG) +&
     !     & Z_FAC001 * ABSA(IND1(I_LAY)   ,IG) +&
     !     & Z_FAC101 * ABSA(IND1(I_LAY) +1,IG) +&
     !     & Z_FAC011 * ABSA(IND1(I_LAY) +9,IG) +&
     !     & Z_FAC111 * ABSA(IND1(I_LAY)+10,IG))+&
     & ( (1. - z_fs) *( p_fac00(i_lay) * absa(ind0(i_lay)   ,ig) +   &
     & p_fac10(i_lay) * absa(ind0(i_lay)+9 ,ig) +   &
     & p_fac01(i_lay) * absa(ind1(i_lay)   ,ig) +    &
     & p_fac11(i_lay) * absa(ind1(i_lay)+9 ,ig))+   &
     & z_fs     *( p_fac00(i_lay) * absa(ind0(i_lay)+ 1,ig) +   &
     & p_fac10(i_lay) * absa(ind0(i_lay)+10,ig) +   &
     & p_fac01(i_lay) * absa(ind1(i_lay)+ 1,ig) +   &
     & p_fac11(i_lay) * absa(ind1(i_lay)+10,ig))) +  &
     !-- DS_000515
     & p_colh2o(i_lay) * &
     & p_selffac(i_lay) * (selfref(inds(i_lay),ig) + &
     & p_selffrac(i_lay) *&
     & (selfref(inds(i_lay)+1,ig) - selfref(inds(i_lay),ig)))&
     & + p_tauaerl(i_lay,12)  
    pfrac(ngs11+ig,i_lay) = fracrefa(ig,js) + z_fs *&
     & (fracrefa(ig,js+1) - fracrefa(ig,js))  
  ENDDO
ENDDO

!-- JJM_000517
DO ig = 1, ng12
  DO i_lay = k_laytrop+1, klev
!-- JJM_000517
    p_tau(ngs11+ig,i_lay) = p_tauaerl(i_lay,12)
    pfrac(ngs11+ig,i_lay) = 0.0_jprb
  ENDDO
ENDDO

IF (lhook) CALL dr_hook('RRTM_TAUMOL12',1,zhook_handle)
END SUBROUTINE rrtm_taumol12