! (c) British Crown Copyright 2008, the Met Office.
! All rights reserved.
! 
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! provided that the following conditions are met:
! 
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! 
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR 
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!
! History:
! Jul 2007 - A. Bodas-Salcedo - Initial version
! Oct 2008 - S. Bony          - Instructions "Call for large-scale cloud" removed  -> sgx%frac_out is used instead.
!                               Call lidar_simulator changed (lsca, gbx%cca and depol removed; 
!                               frac_out changed in sgx%frac_out)
!
! 
MODULE MOD_COSP_LIDAR
  USE MOD_COSP_CONSTANTS
  USE MOD_COSP_TYPES
  IMPLICIT NONE

CONTAINS


!%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
!------------------- SUBROUTINE COSP_LIDAR ------------------------
!%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
SUBROUTINE COSP_LIDAR(gbx,sgx,sghydro,y)
  
  ! Arguments
  type(cosp_gridbox),intent(in) :: gbx  ! Gridbox info
  type(cosp_subgrid),intent(in) :: sgx  ! Subgrid info
  type(cosp_sghydro),intent(in) :: sghydro  ! Subgrid info for hydrometeors
  type(cosp_sglidar),intent(inout) :: y ! Subgrid output
  
  ! Local variables 
  integer :: i
  real :: presf(sgx%Npoints, sgx%Nlevels + 1)
  real :: frac_out(sgx%Npoints, sgx%Nlevels)
  real,dimension(sgx%Npoints, sgx%Nlevels) :: lsca,mr_ll,mr_li,mr_cl,mr_ci
  real,dimension(sgx%Npoints, sgx%Nlevels) :: beta_tot,tau_tot
  real,dimension(sgx%Npoints, PARASOL_NREFL)  :: refle
  
  
  presf(:,1:sgx%Nlevels) = gbx%ph
  presf(:,sgx%Nlevels + 1) = 0.0
!   presf(:,sgx%Nlevels + 1) = gbx%p(:,sgx%Nlevels) - (presf(:,sgx%Nlevels) - gbx%p(:,sgx%Nlevels)) 
  lsca = gbx%tca-gbx%cca
  do i=1,sgx%Ncolumns
      ! Temporary arrays for simulator call
      mr_ll(:,:) = sghydro%mr_hydro(:,i,:,I_LSCLIQ)
      mr_li(:,:) = sghydro%mr_hydro(:,i,:,I_LSCICE)
      mr_cl(:,:) = sghydro%mr_hydro(:,i,:,I_CVCLIQ)
      mr_ci(:,:) = sghydro%mr_hydro(:,i,:,I_CVCICE)
      frac_out(:,:) = sgx%frac_out(:,i,:)    
      call lidar_simulator(sgx%Npoints, sgx%Nlevels, 4 &
                 , PARASOL_NREFL, LIDAR_UNDEF  &
                 , gbx%p, presf, gbx%T &
                 , mr_ll, mr_li, mr_cl, mr_ci &
                 , gbx%Reff(:,:,I_LSCLIQ), gbx%Reff(:,:,I_LSCICE), gbx%Reff(:,:,I_CVCLIQ), gbx%Reff(:,:,I_CVCICE) &
                 , frac_out, gbx%lidar_ice_type, y%beta_mol, beta_tot, tau_tot  &
                 , refle ) ! reflectance
      
      y%beta_tot(:,i,:) = beta_tot(:,:)
      y%tau_tot(:,i,:)  = tau_tot(:,:)
      y%refl(:,i,:)     = refle(:,:)
  enddo

END SUBROUTINE COSP_LIDAR

END MODULE MOD_COSP_LIDAR