srtm_taumol28.F90

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SUBROUTINE srtm_taumol28 &
 & ( klev,&
 & p_fac00   , p_fac01  , p_fac10   , p_fac11,&
 & k_jp      , k_jt     , k_jt1     , p_oneminus,&
 & p_colmol  , p_colo2  , p_colo3,&
 & k_laytrop,&
 & p_sfluxzen, p_taug   , p_taur    &
 & )  

!     Written by Eli J. Mlawer, Atmospheric & Environmental Research.

!     BAND 28:  38000-50000 cm-1 (low - O3,O2; high - O3,O2)

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

!     JJMorcrette 2003-02-24 adapted to ECMWF environment

!      PARAMETER (MG=16, MXLAY=203, NBANDS=14)

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

USE parsrtm  , ONLY : jplay, jpg, ng28
USE yoesrta28, ONLY : absa, absb &
 & , sfluxrefc, rayl &
 & , layreffr, strrat  
USE yoesrtwn , ONLY : nspa, nspb

IMPLICIT NONE

!-- Output
INTEGER(KIND=JPIM),INTENT(IN)    :: KLEV 
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_COLMOL(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_COLO2(jplay) 
REAL(KIND=JPRB)   ,INTENT(IN)    :: P_COLO3(jplay) 
INTEGER(KIND=JPIM),INTENT(IN)    :: K_LAYTROP 

REAL(KIND=JPRB)   ,INTENT(OUT)   :: P_SFLUXZEN(jpg) 
REAL(KIND=JPRB)   ,INTENT(OUT)   :: P_TAUG(jplay,jpg) 
REAL(KIND=JPRB)   ,INTENT(OUT)   :: P_TAUR(jplay,jpg) 
!- from INTFAC      
!- from INTIND
!- from PRECISE             
!- from PROFDATA             
!- from SELF             
INTEGER(KIND=JPIM) :: IG, IND0, IND1, JS, I_LAY, I_LAYSOLFR, I_NLAYERS

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

IF (lhook) CALL dr_hook('SRTM_TAUMOL28',0,zhook_handle)
i_nlayers = klev

!     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.  

DO i_lay = 1, k_laytrop
  z_speccomb = p_colo3(i_lay) + strrat*p_colo2(i_lay)
  z_specparm = p_colo3(i_lay)/z_speccomb 
  IF (z_specparm >= p_oneminus) z_specparm = p_oneminus
  z_specmult = 8.*(z_specparm)
  js = 1 + int(z_specmult)
  z_fs = mod(z_specmult, 1.0_jprb )
! Z_FAC000 = (1. - Z_FS) * P_FAC00(I_LAY)
! Z_FAC010 = (1. - Z_FS) * P_FAC10(I_LAY)
! Z_FAC100 = Z_FS * P_FAC00(I_LAY)
! Z_FAC110 = Z_FS * P_FAC10(I_LAY)
! Z_FAC001 = (1. - Z_FS) * P_FAC01(I_LAY)
! Z_FAC011 = (1. - Z_FS) * P_FAC11(I_LAY)
! Z_FAC101 = Z_FS * P_FAC01(I_LAY)
! Z_FAC111 = Z_FS * P_FAC11(I_LAY)
  ind0 = ((k_jp(i_lay)-1)*5+(k_jt(i_lay)-1))*nspa(28) + js
  ind1 = (k_jp(i_lay)*5+(k_jt1(i_lay)-1))*nspa(28) + js
  z_tauray = p_colmol(i_lay) * rayl

!  DO IG = 1, NG(28)
  DO ig = 1 , ng28
    p_taug(i_lay,ig) = z_speccomb * &
!    & (Z_FAC000 * ABSA(IND0,IG) + &
!    & Z_FAC100 * ABSA(IND0+1,IG) + &
!    & Z_FAC010 * ABSA(IND0+9,IG) + &
!    & Z_FAC110 * ABSA(IND0+10,IG) + &
!    & Z_FAC001 * ABSA(IND1,IG) + &
!    & Z_FAC101 * ABSA(IND1+1,IG) + &
!    & Z_FAC011 * ABSA(IND1+9,IG) + &
!    & Z_FAC111 * ABSA(IND1+10,IG))   
     & (&
     & (1. - z_fs) * ( absa(ind0,ig) * p_fac00(i_lay) + &
     &                 absa(ind0+9,ig) * p_fac10(i_lay) + &
     &                 absa(ind1,ig) * p_fac01(i_lay) + &
     &                 absa(ind1+9,ig) * p_fac11(i_lay) ) + &
     & z_fs        * ( absa(ind0+1,ig) * p_fac00(i_lay) + &
     &                 absa(ind0+10,ig) * p_fac10(i_lay) + &
     &                 absa(ind1+1,ig) * p_fac01(i_lay) + &
     &                 absa(ind1+10,ig) * p_fac11(i_lay) ) &
     & ) 
!     &           + TAURAY
!    SSA(LAY,IG) = TAURAY/TAUG(LAY,IG)
    p_taur(i_lay,ig) = z_tauray
  ENDDO
ENDDO

i_laysolfr = i_nlayers

DO i_lay = k_laytrop+1, i_nlayers
  IF (k_jp(i_lay-1) < layreffr .AND. k_jp(i_lay) >= layreffr) &
   & i_laysolfr = i_lay  
  z_speccomb = p_colo3(i_lay) + strrat*p_colo2(i_lay)
  z_specparm = p_colo3(i_lay)/z_speccomb 
  IF (z_specparm >= p_oneminus) z_specparm = p_oneminus
  z_specmult = 4.*(z_specparm)
  js = 1 + int(z_specmult)
  z_fs = mod(z_specmult, 1.0_jprb )
! Z_FAC000 = (1. - Z_FS) * P_FAC00(I_LAY)
! Z_FAC010 = (1. - Z_FS) * P_FAC10(I_LAY)
! Z_FAC100 = Z_FS * P_FAC00(I_LAY)
! Z_FAC110 = Z_FS * P_FAC10(I_LAY)
! Z_FAC001 = (1. - Z_FS) * P_FAC01(I_LAY)
! Z_FAC011 = (1. - Z_FS) * P_FAC11(I_LAY)
! Z_FAC101 = Z_FS * P_FAC01(I_LAY)
! Z_FAC111 = Z_FS * P_FAC11(I_LAY)
  ind0 = ((k_jp(i_lay)-13)*5+(k_jt(i_lay)-1))*nspb(28) + js
  ind1 = ((k_jp(i_lay)-12)*5+(k_jt1(i_lay)-1))*nspb(28) + js
  z_tauray = p_colmol(i_lay) * rayl

!  DO IG = 1, NG(28)
  DO ig = 1 , ng28
    p_taug(i_lay,ig) = z_speccomb * &
!    & (Z_FAC000 * ABSB(IND0,IG) + &
!    & Z_FAC100 * ABSB(IND0+1,IG) + &
!    & Z_FAC010 * ABSB(IND0+5,IG) + &
!    & Z_FAC110 * ABSB(IND0+6,IG) + &
!    & Z_FAC001 * ABSB(IND1,IG) + &
!    & Z_FAC101 * ABSB(IND1+1,IG) + &
!    & Z_FAC011 * ABSB(IND1+5,IG) + &
!    & Z_FAC111 * ABSB(IND1+6,IG))   
     & (&
     & (1. - z_fs) * ( absb(ind0,ig) * p_fac00(i_lay) + &
     &                 absb(ind0+5,ig) * p_fac10(i_lay) + &
     &                 absb(ind1,ig) * p_fac01(i_lay) + &
     &                 absb(ind1+5,ig) * p_fac11(i_lay) ) + &
     & z_fs        * ( absb(ind0+1,ig) * p_fac00(i_lay) + &
     &                 absb(ind0+6,ig) * p_fac10(i_lay) + &
     &                 absb(ind1+1,ig) * p_fac01(i_lay) + &
     &                 absb(ind1+6,ig) * p_fac11(i_lay) ) &
     & ) 
!     &           + TAURAY
!    SSA(LAY,IG) = TAURAY/TAUG(LAY,IG)
    IF (i_lay == i_laysolfr) p_sfluxzen(ig) = sfluxrefc(ig,js) &
     & + z_fs * (sfluxrefc(ig,js+1) - sfluxrefc(ig,js))  
    p_taur(i_lay,ig) = z_tauray
  ENDDO
ENDDO

!-----------------------------------------------------------------------
IF (lhook) CALL dr_hook('SRTM_TAUMOL28',1,zhook_handle)
END SUBROUTINE srtm_taumol28