source: palm/trunk/SOURCE/init_cloud_physics.f90 @ 2001

Last change on this file since 2001 was 2001, checked in by knoop, 5 years ago

last commit documented

  • Property svn:keywords set to Id
File size: 4.8 KB
RevLine 
[1682]1!> @file init_cloud_physics.f90
[2000]2!------------------------------------------------------------------------------!
[1036]3! This file is part of PALM.
4!
[2000]5! PALM is free software: you can redistribute it and/or modify it under the
6! terms of the GNU General Public License as published by the Free Software
7! Foundation, either version 3 of the License, or (at your option) any later
8! version.
[1036]9!
10! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
13!
14! You should have received a copy of the GNU General Public License along with
15! PALM. If not, see <http://www.gnu.org/licenses/>.
16!
[1818]17! Copyright 1997-2016 Leibniz Universitaet Hannover
[2000]18!------------------------------------------------------------------------------!
[1036]19!
[484]20! Current revisions:
[1]21! -----------------
[1335]22!
[2001]23!
[1321]24! Former revisions:
25! ------------------
26! $Id: init_cloud_physics.f90 2001 2016-08-20 18:41:22Z knoop $
[1323]27!
[2001]28! 2000 2016-08-20 18:09:15Z knoop
29! Forced header and separation lines into 80 columns
30!
[1851]31! 1849 2016-04-08 11:33:18Z hoffmann
[1852]32! bfactor removed and microphysics constants moved microphysics_mod
33!
[1823]34! 1822 2016-04-07 07:49:42Z hoffmann
35! icloud_scheme replaced by microphysics_*
36!
[1692]37! 1691 2015-10-26 16:17:44Z maronga
38! Removed typo
39!
[1683]40! 1682 2015-10-07 23:56:08Z knoop
41! Code annotations made doxygen readable
42!
[1362]43! 1361 2014-04-16 15:17:48Z hoffmann
44! sed_qc_const is now calculated here (2-moment microphysics)
45!
[1354]46! 1353 2014-04-08 15:21:23Z heinze
47! REAL constants provided with KIND-attribute
48!
[1335]49! 1334 2014-03-25 12:21:40Z heinze
50! Bugfix: REAL constants provided with KIND-attribute
51!
[1323]52! 1322 2014-03-20 16:38:49Z raasch
53! REAL constants defined as wp-kind
[1321]54!
55! 1320 2014-03-20 08:40:49Z raasch
[1320]56! ONLY-attribute added to USE-statements,
57! kind-parameters added to all INTEGER and REAL declaration statements,
58! kinds are defined in new module mod_kinds,
59! revision history before 2012 removed,
60! comment fields (!:) to be used for variable explanations added to
61! all variable declaration statements
[1054]62!
[1066]63! 1065 2012-11-22 17:42:36Z hoffmann
64! The Courant number of sedimentation can be controlled with c_sedimentation.
65!
[1054]66! 1053 2012-11-13 17:11:03Z hoffmann
[1053]67! calculation of the maximum timestep according to the terminal velocity of rain
68! drops in the two moment cloud scheme
[1]69!
[1053]70! calculation of frequently used constants (pirho_l, dpirho_l, schmidt_p_1d3,
71! hyrho)
72!
[1037]73! 1036 2012-10-22 13:43:42Z raasch
74! code put under GPL (PALM 3.9)
75!
[826]76! 824 2012-02-17 09:09:57Z raasch
77! calculation of b_cond replaced by calculation of bfactor
78!
[1]79! Revision 1.1  2000/04/13 14:37:22  schroeter
80! Initial revision
81!
82!
83! Description:
84! ------------
[1682]85!> Initialization of parameters for handling cloud-physics
[1]86!------------------------------------------------------------------------------!
[1682]87 SUBROUTINE init_cloud_physics
88 
[1]89
[1320]90    USE arrays_3d,                                                             &
91        ONLY:  dzu, hyp, pt_init, zu
92       
93    USE cloud_parameters,                                                      &
[1849]94        ONLY:  cp, hyrho, l_d_cp, l_d_r, l_d_rv, l_v, pt_d_t, rho_l, r_d, r_v, &
95               t_d_pt
96               
[1320]97    USE control_parameters,                                                    &
[1849]98        ONLY:  g, message_string, pt_surface, rho_surface, surface_pressure
[1320]99   
100    USE indices,                                                               &
101        ONLY:  nzb, nzt
102   
103    USE kinds
[1]104
105    IMPLICIT NONE
106
[1682]107    INTEGER(iwp) ::  k      !<
[1320]108   
[1682]109    REAL(wp) ::  t_surface  !<
[1]110
[1353]111    ALLOCATE( hyp(nzb:nzt+1), pt_d_t(nzb:nzt+1), t_d_pt(nzb:nzt+1),            &
[1053]112              hyrho(nzb:nzt+1) )
[1]113
114!
[824]115!-- Calculate frequently used parameters
[1]116    l_d_cp = l_v / cp
117    l_d_r  = l_v / r_d
118    l_d_rv = l_v / r_v
[1053]119
[1]120!
121!-- Calculate:
122!-- pt / t : ratio of potential and actual temperature (pt_d_t)
123!-- t / pt : ratio of actual and potential temperature (t_d_pt)
[95]124!-- p_0(z) : vertical profile of the hydrostatic pressure (hyp)
[1353]125    t_surface = pt_surface * ( surface_pressure / 1000.0_wp )**0.286_wp
[1]126    DO  k = nzb, nzt+1
[221]127!
128!--    Check temperature in case of too large domain height
[1353]129       IF ( ( t_surface - g/cp * zu(k) ) < 0.0_wp )  THEN
[221]130          WRITE( message_string, * )  'absolute temperature < 0.0 at zu(', k, &
131                                      ') = ', zu(k)
[226]132          CALL message( 'init_cloud_physics', 'PA0142', 1, 2, 0, 6, 0 )
[221]133       ENDIF
[1353]134       hyp(k)    = surface_pressure * 100.0_wp * &
[1322]135                   ( (t_surface - g/cp * zu(k)) / t_surface )**(1.0_wp/0.286_wp)
[1353]136       pt_d_t(k) = ( 100000.0_wp / hyp(k) )**0.286_wp
137       t_d_pt(k) = 1.0_wp / pt_d_t(k)
[1053]138       hyrho(k)  = hyp(k) / ( r_d * t_d_pt(k) * pt_init(k) )       
[1]139    ENDDO
140
141!
142!-- Compute reference density
[1353]143    rho_surface = surface_pressure * 100.0_wp / ( r_d * t_surface )
[1]144
145
146 END SUBROUTINE init_cloud_physics
Note: See TracBrowser for help on using the repository browser.