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source: palm/trunk/SOURCE/chem_photolysis_mod.f90 @ 2834

Last change on this file since 2834 was 2766, checked in by kanani, 7 years ago
Removal of chem directive, plus minor changes
Property svn:keywords set to `Id`
File size: 12.9 KB

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1	!> @file chem_photolysis_mod.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
4	!
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.
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 1997-2018 Leibniz Universitaet Hannover
18	! Copyright 2017-2018 Karlsruhe Institute of Technology
19	!------------------------------------------------------------------------------!
20	!
21	! Current revisions:
22	! -----------------
23	!
24	!
25	! Former revisions:
26	! -----------------
27	! $Id: chem_photolysis_mod.f90 2766 2018-01-22 17:17:47Z raasch $
28	! Removed preprocessor directive __chem
29	!
30	! 2718 2018-01-02 08:49:38Z maronga
31	! Initial revision
32	!
33	!
34	!
35	!
36	! Authors:
37	! --------
38	! @author Renate Forkel
39	!
40	!
41	!------------------------------------------------------------------------------!
42	! Description:
43	! ------------
44	!> photolysis models and interfaces (Adapted from photolysis_model_mod.f90)
45	!> @todo Alles!
46	!------------------------------------------------------------------------------!
47	MODULE chem_photolysis_mod
48
49	USE arrays_3d, &
50	ONLY: dzw, hyp, pt, q, ql, zu, zw
51
52	USE constants, &
53	ONLY: pi
54
55	USE control_parameters, &
56	ONLY: time_since_reference_point
57
58	USE pegrid, ONLY: myid, threads_per_task
59
60	USE indices, &
61	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt
62
63	USE radiation_model_mod, &
64	ONLY: calc_zenith, zenith
65	!day, day_init, lat, lambda, lon, &
66	!time_utc, time_utc_init, !FKa: This is now handled by date_and_time_mod
67
68	USE control_parameters, &
69	ONLY: initializing_actions
70	! ONLY: cloud_droplets, cloud_physics, g, initializing_actions, &
71	! large_scale_forcing, lsf_surf, phi, pt_surface, rho_surface, &
72	! surface_pressure, time_since_reference_point
73
74	USE chem_gasphase_mod, &
75	ONLY: nphot, phot_names, phot
76
77	USE chemistry_model_mod, &
78	ONLY: phot_frequen, photolysis_scheme
79
80	USE chem_modules, &
81	ONLY: chem_debug2
82
83	! REAL(wp), DIMENSION(0:0) :: zenith, & !< cosine of solar zenith angle
84	! sun_dir_lat, & !< solar directional vector in latitudes
85	! sun_dir_lon !< solar directional vector in longitudes
86	USE kinds
87
88	#if defined ( __netcdf )
89	USE NETCDF
90	#endif
91
92
93	IMPLICIT NONE
94
95
96	! LOGICAL :: unscheduled_photolysis_calls = .TRUE., & !< flag parameter indicating whether additional calls of the photolysis code are allowed
97	! constant_albedo = .FALSE., & !< flag parameter indicating whether the albedo may change depending on zenith
98	! force_photolysis_call = .FALSE., & !< flag parameter for unscheduled photolysis calls
99	! photolysis = .FALSE., & !< flag parameter indicating whether the photolysis model is used
100	! sun_up = .TRUE., & !< flag parameter indicating whether the sun is up or down
101	! photolysis = .TRUE., & !< flag parameter indicing whether photolysis shall be calculated
102	! sun_direction = .FALSE. !< flag parameter indicing whether solar direction shall be calculated
103
104	!-- Parameters for constant photolysis frequencies
105	INTEGER,PARAMETER :: nconst = 15 !< available predefined photolysis prequencies for constant
106
107	! Names for predefined fixed photolysis frequencies at zenith angle 0
108	CHARACTER(LEN=10), PARAMETER, DIMENSION(nconst) :: names_c = (/ &
109	'J_O31D ','J_O33P ','J_NO2 ','J_HNO3 ','J_RCHO ', &
110	'J ','J ','J ','J ','J ', &
111	'J ','J ','J ','J ','J ' /)
112	! Photolysis frequency at zenith angle 0 in 1/s
113	REAL(wp), PARAMETER, DIMENSION(nconst) :: phot0 = (/ &
114	2.489E-05_wp,3.556E-04_wp, 8.89E-03_wp,5.334E-07_wp,3.734E-05_wp, &
115	0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp, &
116	0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp /)
117
118
119	!-- Parameters for simple photolysis frequencies
120	INTEGER,PARAMETER :: nsimple = 15 !< available predefined photolysis prequencies for simpel parameterisation
121	! Names for simple photolysis frequencies parameterisation (
122	CHARACTER(LEN=10), PARAMETER, DIMENSION(nsimple) :: names_s = (/ &
123	'J_O31D ','J_O33P ','J_H2O2 ','J_NO2 ','J_NO3_A ', &
124	'J_NO3_B ','J_HONO ','J_HNO3 ','J_HCHO_A ','J_HCHO_B ', &
125	'J_CH3CHO ','J ','J ','J ','J_RCHO ' /)
126
127	!-- Parameters for simeple photolysis frequencies from MCM (http://mcm.leeds.ac.uk/MCM)
128	!-- Saunders et al., 2003, Atmos. Chem. Phys., 3, 161-180
129	REAL(wp), PARAMETER, DIMENSION(nconst) :: par_l = (/ &
130	6.073E-05_wp,4.775E-04_wp,1.041E-05_wp,1.165E-02_wp,2.485E-02_wp, &
131	1.747E-01_wp,2.644E-03_wp,9.312E-07_wp,4.642E-05_wp,6.853E-05_wp, &
132	7.344E-06_wp,0.0000E00_wp,0.0000E00_wp,0.000E00_wp, 6.853E-05_wp /)
133
134	REAL(wp), PARAMETER, DIMENSION(nconst) :: par_m = (/ &
135	1.743_wp, 0.298_wp, 0.723_wp, 0.244_wp, 0.168_wp, &
136	0.155_wp, 0.261_wp, 1.230_wp, 0.762_wp, 0.477_wp, &
137	1.202_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.477_wp /)
138
139	REAL(wp), PARAMETER, DIMENSION(nconst) :: par_n = (/ &
140	0.474_wp, 0.080_wp, 0.279_wp, 0.267_wp, 0.108_wp, &
141	0.125_wp, 0.288_wp, 0.307_wp, 0.353_wp, 0.323_wp, &
142	0.417_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.323_wp /)
143
144
145	REAL(wp) :: time_photolysis = 0.0_wp, & !< time since last call of photolysis code
146	dt_photolysis = 0.0_wp, & !< hotolysis model timestep
147	skip_time_do_photolysis = 0.0_wp !< Radiation model is not called before this time
148
149	REAL(wp) :: cosz = 0.7_wp !< cosine of Zenith angle (45 deg, if not specified otherwise)
150
151	!
152	!-- Variables and parameters used in Fast-J only
153	! ....
154
155	! INTERFACE photolysis_check_parameters
156	! MODULE PROCEDURE photolysis_check_parameters
157	! END INTERFACE photolysis_check_parameters
158
159	INTERFACE photolysis_constant
160	MODULE PROCEDURE photolysis_constant
161	END INTERFACE photolysis_constant
162
163	INTERFACE photolysis_simple
164	MODULE PROCEDURE photolysis_simple
165	END INTERFACE photolysis_simple
166	!
167	! INTERFACE photolysis_fastj
168	! MODULE PROCEDURE photolysis_fastj
169	! END INTERFACE photolysis_fastj
170	!
171	INTERFACE photolysis_control
172	MODULE PROCEDURE photolysis_control
173	END INTERFACE photolysis_control
174
175	! INTERFACE photolysis_header
176	! MODULE PROCEDURE photolysis_header
177	! END INTERFACE photolysis_header
178	!
179	INTERFACE photolysis_init
180	MODULE PROCEDURE photolysis_init
181	END INTERFACE photolysis_init
182
183	! INTERFACE photolysis_parin
184	! MODULE PROCEDURE photolysis_parin
185	! END INTERFACE photolysis_parin
186
187	! INTERFACE photolysis_read_restart_data
188	! MODULE PROCEDURE photolysis_read_restart_data
189	! END INTERFACE photolysis_read_restart_data
190
191	! INTERFACE photolysis_last_actions
192	! MODULE PROCEDURE photolysis_last_actions
193	! END INTERFACE photolysis_last_actions
194
195	SAVE
196
197	PRIVATE
198
199	!
200	!-- Public functions / NEEDS SORTING
201	! PUBLIC photolysis_init
202	! photolysis_check_parameters, photolysis_control, &
203	! photolysis_header, photolysis_init, photolysis_parin !, &
204	! photolysis_define_netcdf_grid, photolysis_last_actions, &
205	! photolysis_read_restart_data, photolysis_data_output_mask
206
207	PUBLIC photolysis_control, photolysis_init
208
209	PUBLIC photolysis_scheme
210	!
211
212	CONTAINS
213
214
215	!------------------------------------------------------------------------------!
216	! Description:
217	! ------------
218	!> This subroutine controls the calls of the photolysis schemes
219	!------------------------------------------------------------------------------!
220	SUBROUTINE photolysis_control
221
222
223	IMPLICIT NONE
224
225
226	SELECT CASE ( TRIM( photolysis_scheme ) )
227
228	CASE ( 'constant' )
229	CALL photolysis_constant
230
231	CASE ( 'simple' )
232	CALL photolysis_simple
233
234	! CASE ( 'fastj' )
235	! CALL photolysis_fastj
236
237	CASE DEFAULT
238
239	END SELECT
240
241
242	END SUBROUTINE photolysis_control
243
244	!------------------------------------------------------------------------------!
245	! Description:
246	! ------------
247	!> Initialization of the photolysis model
248	!------------------------------------------------------------------------------!
249	SUBROUTINE photolysis_init !### not yes used. Call should be placed near call of chem_init
250
251	IMPLICIT NONE
252
253	!-- Just in case we need anything
254
255	RETURN
256
257	END SUBROUTINE photolysis_init
258
259
260	!------------------------------------------------------------------------------!
261	! Description:
262	! ------------
263	!> This scheme keeps the prescribed net radiation constant during the run
264	!> Default zenith angle is 45 deg
265	!------------------------------------------------------------------------------!
266	SUBROUTINE photolysis_constant
267
268
269	IMPLICIT NONE
270
271	! INTEGER(iwp) :: i, j, k !< loop indices
272	INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction
273	! REAL(wp) :: exn, & !< Exner functions at surface
274	! pt1 !< potential temperature at first grid level
275
276	DO iphot = 1,nphot
277	DO iav = 1,nconst
278	IF ( TRIM( names_c(iav) ) == TRIM( phot_names(iphot) ) ) then
279	!-- Prescribe fixed photolysis frequencies [1/s]
280	! IF(myid == 0 .AND. chem_debug2 ) WRITE(06,*) iphot, iav,phot_names(iphot),names_c(iav)
281
282	phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = &
283	phot0(iav) * cosz
284
285	! IF(myid == 0 .AND. chem_debug2 ) WRITE(06,*) phot_frequen(iphot)%freq(1,5,5)
286	ENDIF
287	ENDDO
288	ENDDO
289
290	END SUBROUTINE photolysis_constant
291
292
293	!------------------------------------------------------------------------------!
294	! Description:
295	! ------------
296	!> This scheme applies a simple parameterisation for clear sky photolysis frequencies
297	!> from the Master Chemical Mechanism, MCM v3.2 (http://mcm.leeds.ac.uk/MCM).
298	!> Reference: Saunders et al., Atmos. Chem. Phys., 3, 161, 2003
299	!------------------------------------------------------------------------------!
300	SUBROUTINE photolysis_simple
301
302	IMPLICIT NONE
303
304	! INTEGER(iwp) :: i, j, k !< loop indices
305	INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction
306	! REAL(wp) :: exn, & !< Exner functions at surface
307	! pt1 !< potential temperature at first grid level
308	REAL(wp) :: coszi !< 1./cosine of zenith angle
309
310	DO iphot = 1,nphot
311	phot_frequen(iphot)%freq = 0.0_wp
312	ENDDO
313
314	CALL calc_zenith
315
316	IF ( zenith(0) > 0.0_wp ) THEN
317	coszi = 1. / zenith(0)
318
319	DO iphot = 1,nphot
320	DO iav = 1,nsimple
321	IF ( TRIM( names_s(iav) ) == TRIM( phot_names(iphot) ) ) then
322	! if(myid == 0 .AND. chem_debug2 ) WRITE(06,*) 'simple', iphot, iav,phot_names(iphot),names_s(iav)
323
324	phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = &
325	par_l(iav) * zenith(0)*par_m(iav) EXP( -par_n(iav) * coszi )
326
327	! if(myid == 0 .AND. chem_debug2 ) WRITE(06,*) 'simple', phot_frequen(iphot)%freq(1,5,5)
328	ENDIF
329	ENDDO
330	ENDDO
331	ENDIF
332
333	END SUBROUTINE photolysis_simple
334
335	END MODULE chem_photolysis_mod

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