source: LMDZ6/trunk/libf/phylmd/cosp2/cosp_modis_interface.F90 @ 4013

Last change on this file since 4013 was 3358, checked in by idelkadi, 6 years ago

Implementation de la nouvelle version COSPv2 dans LMDZ.
Pour compiler avec makelmdz_fcma utiliser l'option "-cosp2 true"

File size: 6.4 KB
Line 
1! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2! Copyright (c) 2015, Regents of the University of Colorado
3! All rights reserved.
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16!    used to endorse or promote products derived from this software without specific prior
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19! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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24! OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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27! OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28!
29! History
30! May 2015 - D. Swales - Original version
31! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
32MODULE MOD_COSP_Modis_INTERFACE
33  USE COSP_KINDS,      ONLY: wp
34  USE MOD_COSP_CONFIG, ONLY: R_UNDEF
35  use mod_modis_sim,   ONLY: num_trial_res,min_OpticalThickness,CO2Slicing_PressureLimit,&
36                             CO2Slicing_TauLimit,phase_TauLimit,size_TauLimit,re_fill,   &
37                             phaseDiscrimination_Threshold,re_water_min,     &
38                             re_water_max,re_ice_min,re_ice_max,               &
39                             highCloudPressureLimit,lowCloudPressureLimit,phaseIsNone,   &
40                             phaseIsLiquid,phaseIsIce,phaseIsUndetermined,trial_re_w,    &
41                             trial_re_i,g_w,g_i,w0_w,w0_i, get_g_nir,get_ssa_nir
42  implicit none
43
44  ! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
45  !  TYPE modis_in
46  ! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
47  type modis_IN
48     integer,pointer :: &
49          Npoints,        & ! Number of horizontal gridpoints
50          Ncolumns,       & ! Number of subcolumns
51          Nlevels           ! Number of vertical levels
52     integer :: &
53          Nsunlit           ! Number of sunlit lit pixels
54     real(wp),allocatable,dimension(:) :: &
55          sunlit,         & ! Sunlit scenes
56          notSunlit         ! Dark scenes
57     real(wp),allocatable,dimension(:,:) :: &
58          pres              ! Gridmean pressure at layer edges (Pa)
59     real(wp),pointer ::  &
60          tau(:,:,:),     & ! Subcolumn optical thickness @ 0.67 microns.
61          liqFrac(:,:,:), & ! Liquid water fraction
62          g(:,:,:),       & ! Subcolumn assymetry parameter 
63          w0(:,:,:)         ! Subcolumn single-scattering albedo
64  end type modis_IN
65contains
66  ! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
67  ! SUBROTUINE cosp_modis_init
68  ! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
69  SUBROUTINE COSP_MODIS_INIT()
70    integer :: i
71   
72    ! Retrieval parameters
73    min_OpticalThickness          = 0.3_wp     ! Minimum detectable optical thickness
74    CO2Slicing_PressureLimit      = 70000._wp  ! Cloud with higher pressures use thermal
75                                               ! methods, units Pa
76    CO2Slicing_TauLimit           = 1._wp      ! How deep into the cloud does CO2 slicing
77                                               ! see?
78    phase_TauLimit                = 1._wp      ! How deep into the cloud does the phase
79                                               ! detection see?
80    size_TauLimit                 = 2._wp      ! Depth of the re retreivals
81    phaseDiscrimination_Threshold = 0.7_wp     ! What fraction of total extincton needs to
82                                               ! be in a single category to make phase
83                                               ! discrim. work?
84    re_fill                       = -999._wp   ! Fill value
85    re_water_min                  = 4._wp      ! Minimum effective radius (liquid)
86    re_water_max                  = 30._wp     ! Maximum effective radius (liquid)
87    re_ice_min                    = 5._wp      ! Minimum effective radius (ice)
88    re_ice_max                    = 90._wp     ! Minimum effective radius (ice)
89    highCloudPressureLimit        = 44000._wp  ! High cloud pressure limit (Pa)
90    lowCloudPressureLimit         = 68000._wp  ! Low cloud pressure limit (Pa)
91    phaseIsNone                   = 0          ! No cloud
92    phaseIsLiquid                 = 1          ! Liquid cloud
93    phaseIsIce                    = 2          ! Ice cloud
94    phaseIsUndetermined           = 3          ! Undetermined cloud
95
96    ! Precompute near-IR optical params vs size for retrieval scheme   
97    trial_re_w(1:num_trial_res) = re_water_min + (re_water_max - re_water_min) /         &
98         (num_trial_res-1) * (/(i, i=0, num_trial_res-1)/)
99    trial_re_i(1:num_trial_res) = re_ice_min   + (re_ice_max -   re_ice_min) /           &
100         (num_trial_res-1) * (/(i, i=0, num_trial_res-1)/)
101
102    ! Initialize estimates for size retrieval
103    g_w(1:num_trial_res)  = get_g_nir(phaseIsLiquid,trial_re_w(1:num_trial_res))
104    w0_w(1:num_trial_res) = get_ssa_nir(phaseIsLiquid,trial_re_w(1:num_trial_res))
105    g_i(1:num_trial_res)  = get_g_nir(phaseIsIce,trial_re_i(1:num_trial_res))
106    w0_i(1:num_trial_res) = get_ssa_nir(phaseIsIce,trial_re_i(1:num_trial_res))
107
108  END SUBROUTINE COSP_MODIS_INIT
109 
110  ! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
111  ! END MODULE MOD_COSP_Modis_INTERFACE
112  ! %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
113END MODULE MOD_COSP_Modis_INTERFACE
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