source: palm/trunk/SOURCE/lpm_calc_liquid_water_content.f90 @ 1037

Last change on this file since 1037 was 1037, checked in by raasch, 9 years ago

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[849]1 SUBROUTINE lpm_calc_liquid_water_content
2
[1036]3!--------------------------------------------------------------------------------!
4! This file is part of PALM.
5!
6! PALM is free software: you can redistribute it and/or modify it under the terms
7! of the GNU General Public License as published by the Free Software Foundation,
8! either version 3 of the License, or (at your option) any later version.
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!
17! Copyright 1997-2012  Leibniz University Hannover
18!--------------------------------------------------------------------------------!
19!
[849]20! Current revisions:
21! ------------------
22!
23!
24! Former revisions:
25! -----------------
26! $Id: lpm_calc_liquid_water_content.f90 1037 2012-10-22 14:10:22Z raasch $
27!
[1037]28! 1036 2012-10-22 13:43:42Z raasch
29! code put under GPL (PALM 3.9)
30!
[850]31! 849 2012-03-15 10:35:09Z raasch
32! initial revision (former part of advec_particles)
[849]33!
[850]34!
[849]35! Description:
36! ------------
37! Calculate the liquid water content for each grid box.
38!------------------------------------------------------------------------------!
39
40    USE arrays_3d
41    USE cloud_parameters
42    USE constants
43    USE control_parameters
44    USE cpulog
45    USE grid_variables
46    USE indices
47    USE interfaces
48    USE particle_attributes
49
50    IMPLICIT NONE
51
52    INTEGER ::  i, j, k, n, psi
53
54
55    CALL cpu_log( log_point_s(45), 'lpm_calc_ql', 'start' )
56
57!
58!-- Set water content initially to zero
59    ql = 0.0;  ql_v = 0.0;  ql_vp = 0.0
60
61!
62!-- Calculate for each grid box
63    DO  i = nxl, nxr
64       DO  j = nys, nyn
65          DO  k = nzb, nzt+1
66
67!
68!--          Calculate the total volume in the boxes (ql_v, weighting factor
69!--          has to beincluded)
70             psi = prt_start_index(k,j,i)
71             DO  n = psi, psi+prt_count(k,j,i)-1
72                ql_v(k,j,i)  = ql_v(k,j,i)  + particles(n)%weight_factor *  &
73                                              particles(n)%radius**3
74             ENDDO
75
76!
77!--          Calculate the liquid water content
78             IF ( ql_v(k,j,i) /= 0.0 )  THEN
79                ql(k,j,i) = ql(k,j,i) + rho_l * 1.33333333 * pi *           &
80                                        ql_v(k,j,i) /                       &
81                                        ( rho_surface * dx * dy * dz )
82
83                IF ( ql(k,j,i) < 0.0 ) THEN
84                   WRITE( message_string, * )  'LWC out of range: ' , &
85                                               ql(k,j,i)
86                   CALL message( 'lpm_calc_liquid_water_content', '', 2, 2, &
87                                 -1, 6, 1 )
88                ENDIF
89
90             ELSE
91
92                ql(k,j,i) = 0.0
93
94             ENDIF
95
96          ENDDO
97       ENDDO
98    ENDDO
99
100    CALL cpu_log( log_point_s(45), 'lpm_calc_ql', 'stop' )
101
102
103 END SUBROUTINE lpm_calc_liquid_water_content
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