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MODULE ocealb
!!======================================================================
!! *** MODULE ocealb ***
!! Ocean forcing: bulk thermohaline forcing of the ocean
!!=====================================================================
!! History :
!! NEMO 4.0 ! 2017-07 (C. Rousset) Split ocean and ice albedos
!!----------------------------------------------------------------------
!! oce_alb : albedo for ocean (clear and overcast skies)
!!----------------------------------------------------------------------
USE phycst ! physical constants
USE in_out_manager ! I/O manager
USE lib_mpp ! MPP library
USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
IMPLICIT NONE
PRIVATE
PUBLIC oce_alb ! routine called by sbccpl
!!----------------------------------------------------------------------
!! NEMO/OCE 4.0 , NEMO Consortium (2018)
!! $Id: ocealb.F90 10069 2018-08-28 14:12:24Z nicolasmartin $
!! Software governed by the CeCILL license (see ./LICENSE)
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE oce_alb( palb_os , palb_cs )
!!----------------------------------------------------------------------
!! *** ROUTINE oce_alb ***
!!
!! ** Purpose : Computation of the albedo of the ocean
!!----------------------------------------------------------------------
REAL(wp), DIMENSION(:,:), INTENT(out) :: palb_os ! albedo of ocean under overcast sky
REAL(wp), DIMENSION(:,:), INTENT(out) :: palb_cs ! albedo of ocean under clear sky
!!
REAL(wp) :: zcoef
REAL(wp) :: rmue = 0.40 ! cosine of local solar altitude
!!----------------------------------------------------------------------
!
zcoef = 0.05 / ( 1.1 * rmue**1.4 + 0.15 ) ! Parameterization of Briegled and Ramanathan, 1982
palb_cs(:,:) = zcoef
palb_os(:,:) = 0.06 ! Parameterization of Kondratyev, 1969 and Payne, 1972
!
END SUBROUTINE oce_alb
!!======================================================================
END MODULE ocealb