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source: palm/trunk/SOURCE/radiation_model.f90 @ 1703

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1	!> @file radiation_model.f90
2	!--------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the terms
6	! of the GNU General Public License as published by the Free Software Foundation,
7	! either version 3 of the License, or (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with
14	! PALM. If not, see <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2015 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! -----------------
21	!
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: radiation_model.f90 1702 2015-11-02 07:44:12Z raasch $
26	!
27	! 1701 2015-11-02 07:43:04Z maronga
28	! Bugfixes: wrong index for output of timeseries, setting of nz_snd_end
29	!
30	! 1691 2015-10-26 16:17:44Z maronga
31	! Added option for spin-up runs without radiation (skip_time_do_radiation). Bugfix
32	! in calculation of pressure profiles. Bugfix in calculation of trace gas profiles.
33	! Added output of radiative heating rates.
34	!
35	! 1682 2015-10-07 23:56:08Z knoop
36	! Code annotations made doxygen readable
37	!
38	! 1606 2015-06-29 10:43:37Z maronga
39	! Added preprocessor directive __netcdf to allow for compiling without netCDF.
40	! Note, however, that RRTMG cannot be used without netCDF.
41	!
42	! 1590 2015-05-08 13:56:27Z maronga
43	! Bugfix: definition of character strings requires same length for all elements
44	!
45	! 1587 2015-05-04 14:19:01Z maronga
46	! Added albedo class for snow
47	!
48	! 1585 2015-04-30 07:05:52Z maronga
49	! Added support for RRTMG
50	!
51	! 1571 2015-03-12 16:12:49Z maronga
52	! Added missing KIND attribute. Removed upper-case variable names
53	!
54	! 1551 2015-03-03 14:18:16Z maronga
55	! Added support for data output. Various variables have been renamed. Added
56	! interface for different radiation schemes (currently: clear-sky, constant, and
57	! RRTM (not yet implemented).
58	!
59	! 1496 2014-12-02 17:25:50Z maronga
60	! Initial revision
61	!
62	!
63	! Description:
64	! ------------
65	!> Radiation models and interfaces
66	!> @todo move variable definitions used in init_radiation only to the subroutine
67	!> as they are no longer required after initialization.
68	!> @todo Output of full column vertical profiles used in RRTMG
69	!> @todo Output of other rrtm arrays (such as volume mixing ratios)
70	!> @todo Adapt for use with topography
71	!>
72	!> @note Many variables have a leading dummy dimension (0:0) in order to
73	!> match the assume-size shape expected by the RRTMG model.
74	!------------------------------------------------------------------------------!
75	MODULE radiation_model_mod
76
77
78	USE arrays_3d, &
79	ONLY: dzw, hyp, pt, q, ql, zw
80
81	USE cloud_parameters, &
82	ONLY: cp, l_d_cp, nc_const, rho_l, sigma_gc
83
84	USE constants, &
85	ONLY: pi
86
87	USE control_parameters, &
88	ONLY: cloud_droplets, cloud_physics, g, initializing_actions, &
89	large_scale_forcing, lsf_surf, phi, pt_surface, rho_surface, &
90	surface_pressure, time_since_reference_point
91
92	USE indices, &
93	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb_s_inner, nzb, nzt
94
95	USE kinds
96
97	#if defined ( __netcdf )
98	USE netcdf
99	#endif
100
101	USE netcdf_control, &
102	ONLY: dots_label, dots_num, dots_unit
103
104	#if defined ( __rrtmg )
105	USE parrrsw, &
106	ONLY: naerec, nbndsw
107
108	USE parrrtm, &
109	ONLY: nbndlw
110
111	USE rrtmg_lw_init, &
112	ONLY: rrtmg_lw_ini
113
114	USE rrtmg_sw_init, &
115	ONLY: rrtmg_sw_ini
116
117	USE rrtmg_lw_rad, &
118	ONLY: rrtmg_lw
119
120	USE rrtmg_sw_rad, &
121	ONLY: rrtmg_sw
122	#endif
123
124
125
126	IMPLICIT NONE
127
128	CHARACTER(10) :: radiation_scheme = 'clear-sky' ! 'constant', 'clear-sky', or 'rrtmg'
129
130	!
131	!-- Predefined Land surface classes (albedo_type) after Briegleb (1992)
132	CHARACTER(37), DIMENSION(0:16), PARAMETER :: albedo_type_name = (/ &
133	'user defined ', & ! 0
134	'ocean ', & ! 1
135	'mixed farming, tall grassland ', & ! 2
136	'tall/medium grassland ', & ! 3
137	'evergreen shrubland ', & ! 4
138	'short grassland/meadow/shrubland ', & ! 5
139	'evergreen needleleaf forest ', & ! 6
140	'mixed deciduous evergreen forest ', & ! 7
141	'deciduous forest ', & ! 8
142	'tropical evergreen broadleaved forest', & ! 9
143	'medium/tall grassland/woodland ', & ! 10
144	'desert, sandy ', & ! 11
145	'desert, rocky ', & ! 12
146	'tundra ', & ! 13
147	'land ice ', & ! 14
148	'sea ice ', & ! 15
149	'snow ' & ! 16
150	/)
151
152	INTEGER(iwp) :: albedo_type = 5, & !< Albedo surface type (default: short grassland)
153	day, & !< current day of the year
154	day_init = 172, & !< day of the year at model start (21/06)
155	dots_rad = 0 !< starting index for timeseries output
156
157
158
159
160
161
162	LOGICAL :: constant_albedo = .FALSE., & !< flag parameter indicating whether the albedo may change depending on zenith
163	force_radiation_call = .FALSE., & !< flag parameter for unscheduled radiation calls
164	lw_radiation = .TRUE., & !< flag parameter indicing whether longwave radiation shall be calculated
165	radiation = .FALSE., & !< flag parameter indicating whether the radiation model is used
166	sun_up = .TRUE., & !< flag parameter indicating whether the sun is up or down
167	sw_radiation = .TRUE. !< flag parameter indicing whether shortwave radiation shall be calculated
168
169
170	REAL(wp), PARAMETER :: d_seconds_hour = 0.000277777777778_wp, & !< inverse of seconds per hour (1/3600)
171	d_hours_day = 0.0416666666667_wp, & !< inverse of hours per day (1/24)
172	sigma_sb = 5.67037321E-8_wp, & !< Stefan-Boltzmann constant
173	solar_constant = 1368.0_wp !< solar constant at top of atmosphere
174
175	REAL(wp) :: albedo = 9999999.9_wp, & !< NAMELIST alpha
176	albedo_lw_dif = 9999999.9_wp, & !< NAMELIST aldif
177	albedo_lw_dir = 9999999.9_wp, & !< NAMELIST aldir
178	albedo_sw_dif = 9999999.9_wp, & !< NAMELIST asdif
179	albedo_sw_dir = 9999999.9_wp, & !< NAMELIST asdir
180	decl_1, & !< declination coef. 1
181	decl_2, & !< declination coef. 2
182	decl_3, & !< declination coef. 3
183	dt_radiation = 0.0_wp, & !< radiation model timestep
184	emissivity = 0.98_wp, & !< NAMELIST surface emissivity
185	lambda = 0.0_wp, & !< longitude in degrees
186	lon = 0.0_wp, & !< longitude in radians
187	lat = 0.0_wp, & !< latitude in radians
188	net_radiation = 0.0_wp, & !< net radiation at surface
189	skip_time_do_radiation = 0.0_wp, & !< Radiation model is not called before this time
190	sky_trans, & !< sky transmissivity
191	time_radiation = 0.0_wp, & !< time since last call of radiation code
192	time_utc, & !< current time in UTC
193	time_utc_init = 43200.0_wp !< UTC time at model start (noon)
194
195	REAL(wp), DIMENSION(0:0) :: zenith !< solar zenith angle
196
197	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: &
198	alpha, & !< surface broadband albedo (used for clear-sky scheme)
199	rad_net, & !< net radiation at the surface
200	rad_net_av !< average of rad_net
201
202	!
203	!-- Land surface albedos for solar zenith angle of 60Â° after Briegleb (1992)
204	!-- (shortwave, longwave, broadband): sw, lw, bb,
205	REAL(wp), DIMENSION(0:2,1:16), PARAMETER :: albedo_pars = RESHAPE( (/&
206	0.06_wp, 0.06_wp, 0.06_wp, & ! 1
207	0.09_wp, 0.28_wp, 0.19_wp, & ! 2
208	0.11_wp, 0.33_wp, 0.23_wp, & ! 3
209	0.11_wp, 0.33_wp, 0.23_wp, & ! 4
210	0.14_wp, 0.34_wp, 0.25_wp, & ! 5
211	0.06_wp, 0.22_wp, 0.14_wp, & ! 6
212	0.06_wp, 0.27_wp, 0.17_wp, & ! 7
213	0.06_wp, 0.31_wp, 0.19_wp, & ! 8
214	0.06_wp, 0.22_wp, 0.14_wp, & ! 9
215	0.06_wp, 0.28_wp, 0.18_wp, & ! 10
216	0.35_wp, 0.51_wp, 0.43_wp, & ! 11
217	0.24_wp, 0.40_wp, 0.32_wp, & ! 12
218	0.10_wp, 0.27_wp, 0.19_wp, & ! 13
219	0.90_wp, 0.65_wp, 0.77_wp, & ! 14
220	0.90_wp, 0.65_wp, 0.77_wp, & ! 15
221	0.95_wp, 0.70_wp, 0.82_wp & ! 16
222	/), (/ 3, 16 /) )
223
224	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE, TARGET :: &
225	rad_lw_cs_hr, & !< longwave clear sky radiation heating rate (K/s)
226	rad_lw_cs_hr_av, & !< average of rad_lw_cs_hr
227	rad_lw_hr, & !< longwave radiation heating rate (K/s)
228	rad_lw_hr_av, & !< average of rad_sw_hr
229	rad_lw_in, & !< incoming longwave radiation (W/m2)
230	rad_lw_in_av, & !< average of rad_lw_in
231	rad_lw_out, & !< outgoing longwave radiation (W/m2)
232	rad_lw_out_av, & !< average of rad_lw_out
233	rad_sw_cs_hr, & !< shortwave clear sky radiation heating rate (K/s)
234	rad_sw_cs_hr_av, & !< average of rad_sw_cs_hr
235	rad_sw_hr, & !< shortwave radiation heating rate (K/s)
236	rad_sw_hr_av, & !< average of rad_sw_hr
237	rad_sw_in, & !< incoming shortwave radiation (W/m2)
238	rad_sw_in_av, & !< average of rad_sw_in
239	rad_sw_out, & !< outgoing shortwave radiation (W/m2)
240	rad_sw_out_av !< average of rad_sw_out
241
242
243	!
244	!-- Variables and parameters used in RRTMG only
245	#if defined ( __rrtmg )
246	CHARACTER(LEN=12) :: rrtm_input_file = "RAD_SND_DATA" !< name of the NetCDF input file (sounding data)
247
248
249	!
250	!-- Flag parameters for RRTMGS (should not be changed)
251	INTEGER(iwp), PARAMETER :: rrtm_inflglw = 2, & !< flag for lw cloud optical properties (0,1,2)
252	rrtm_iceflglw = 0, & !< flag for lw ice particle specifications (0,1,2,3)
253	rrtm_liqflglw = 1, & !< flag for lw liquid droplet specifications
254	rrtm_inflgsw = 2, & !< flag for sw cloud optical properties (0,1,2)
255	rrtm_iceflgsw = 0, & !< flag for sw ice particle specifications (0,1,2,3)
256	rrtm_liqflgsw = 1 !< flag for sw liquid droplet specifications
257
258	!
259	!-- The following variables should be only changed with care, as this will
260	!-- require further setting of some variables, which is currently not
261	!-- implemented (aerosols, ice phase).
262	INTEGER(iwp) :: nzt_rad, & !< upper vertical limit for radiation calculations
263	rrtm_icld = 0, & !< cloud flag (0: clear sky column, 1: cloudy column)
264	rrtm_iaer = 0, & !< aerosol option flag (0: no aerosol layers, for lw only: 6 (requires setting of rrtm_sw_ecaer), 10: one or more aerosol layers (not implemented)
265	rrtm_idrv = 1 !< longwave upward flux calculation option (0,1)
266
267	LOGICAL :: snd_exists = .FALSE. !< flag parameter to check whether a user-defined input files exists
268
269	REAL(wp), PARAMETER :: mol_mass_air_d_wv = 1.607793_wp !< molecular weight dry air / water vapor
270
271	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd, & !< hypostatic pressure from sounding data (hPa)
272	q_snd, & !< specific humidity from sounding data (kg/kg) - dummy at the moment
273	rrtm_tsfc, & !< dummy array for storing surface temperature
274	t_snd !< actual temperature from sounding data (hPa)
275
276	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: aldif, & !< longwave diffuse albedo solar angle of 60Â°
277	aldir, & !< longwave direct albedo solar angle of 60Â°
278	asdif, & !< shortwave diffuse albedo solar angle of 60Â°
279	asdir, & !< shortwave direct albedo solar angle of 60Â°
280	rrtm_ccl4vmr, & !< CCL4 volume mixing ratio (g/mol)
281	rrtm_cfc11vmr, & !< CFC11 volume mixing ratio (g/mol)
282	rrtm_cfc12vmr, & !< CFC12 volume mixing ratio (g/mol)
283	rrtm_cfc22vmr, & !< CFC22 volume mixing ratio (g/mol)
284	rrtm_ch4vmr, & !< CH4 volume mixing ratio
285	rrtm_cicewp, & !< in-cloud ice water path (g/mÂ²)
286	rrtm_cldfr, & !< cloud fraction (0,1)
287	rrtm_cliqwp, & !< in-cloud liquid water path (g/mÂ²)
288	rrtm_co2vmr, & !< CO2 volume mixing ratio (g/mol)
289	rrtm_emis, & !< surface emissivity (0-1)
290	rrtm_h2ovmr, & !< H2O volume mixing ratio
291	rrtm_n2ovmr, & !< N2O volume mixing ratio
292	rrtm_o2vmr, & !< O2 volume mixing ratio
293	rrtm_o3vmr, & !< O3 volume mixing ratio
294	rrtm_play, & !< pressure layers (hPa, zu-grid)
295	rrtm_plev, & !< pressure layers (hPa, zw-grid)
296	rrtm_reice, & !< cloud ice effective radius (microns)
297	rrtm_reliq, & !< cloud water drop effective radius (microns)
298	rrtm_tlay, & !< actual temperature (K, zu-grid)
299	rrtm_tlev, & !< actual temperature (K, zw-grid)
300	rrtm_lwdflx, & !< RRTM output of incoming longwave radiation flux (W/m2)
301	rrtm_lwdflxc, & !< RRTM output of outgoing clear sky longwave radiation flux (W/m2)
302	rrtm_lwuflx, & !< RRTM output of outgoing longwave radiation flux (W/m2)
303	rrtm_lwuflxc, & !< RRTM output of incoming clear sky longwave radiation flux (W/m2)
304	rrtm_lwuflx_dt, & !< RRTM output of incoming clear sky longwave radiation flux (W/m2)
305	rrtm_lwuflxc_dt,& !< RRTM output of outgoing clear sky longwave radiation flux (W/m2)
306	rrtm_lwhr, & !< RRTM output of longwave radiation heating rate (K/d)
307	rrtm_lwhrc, & !< RRTM output of incoming longwave clear sky radiation heating rate (K/d)
308	rrtm_swdflx, & !< RRTM output of incoming shortwave radiation flux (W/m2)
309	rrtm_swdflxc, & !< RRTM output of outgoing clear sky shortwave radiation flux (W/m2)
310	rrtm_swuflx, & !< RRTM output of outgoing shortwave radiation flux (W/m2)
311	rrtm_swuflxc, & !< RRTM output of incoming clear sky shortwave radiation flux (W/m2)
312	rrtm_swhr, & !< RRTM output of shortwave radiation heating rate (K/d)
313	rrtm_swhrc !< RRTM output of incoming shortwave clear sky radiation heating rate (K/d)
314
315	!
316	!-- Definition of arrays that are currently not used for calling RRTMG (due to setting of flag parameters)
317	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rad_lw_cs_in, & !< incoming clear sky longwave radiation (W/m2) (not used)
318	rad_lw_cs_out, & !< outgoing clear sky longwave radiation (W/m2) (not used)
319	rad_sw_cs_in, & !< incoming clear sky shortwave radiation (W/m2) (not used)
320	rad_sw_cs_out, & !< outgoing clear sky shortwave radiation (W/m2) (not used)
321	rrtm_aldif, & !< surface albedo for longwave diffuse radiation
322	rrtm_aldir, & !< surface albedo for longwave direct radiation
323	rrtm_asdif, & !< surface albedo for shortwave diffuse radiation
324	rrtm_asdir, & !< surface albedo for shortwave direct radiation
325	rrtm_lw_tauaer, & !< lw aerosol optical depth
326	rrtm_lw_taucld, & !< lw in-cloud optical depth
327	rrtm_sw_taucld, & !< sw in-cloud optical depth
328	rrtm_sw_ssacld, & !< sw in-cloud single scattering albedo
329	rrtm_sw_asmcld, & !< sw in-cloud asymmetry parameter
330	rrtm_sw_fsfcld, & !< sw in-cloud forward scattering fraction
331	rrtm_sw_tauaer, & !< sw aerosol optical depth
332	rrtm_sw_ssaaer, & !< sw aerosol single scattering albedo
333	rrtm_sw_asmaer, & !< sw aerosol asymmetry parameter
334	rrtm_sw_ecaer !< sw aerosol optical detph at 0.55 microns (rrtm_iaer = 6 only)
335
336	#endif
337
338	INTERFACE init_radiation
339	MODULE PROCEDURE init_radiation
340	END INTERFACE init_radiation
341
342	INTERFACE radiation_clearsky
343	MODULE PROCEDURE radiation_clearsky
344	END INTERFACE radiation_clearsky
345
346	INTERFACE radiation_rrtmg
347	MODULE PROCEDURE radiation_rrtmg
348	END INTERFACE radiation_rrtmg
349
350	INTERFACE radiation_tendency
351	MODULE PROCEDURE radiation_tendency
352	MODULE PROCEDURE radiation_tendency_ij
353	END INTERFACE radiation_tendency
354
355	SAVE
356
357	PRIVATE
358
359	PUBLIC albedo, albedo_type, albedo_type_name, albedo_lw_dif, albedo_lw_dir,&
360	albedo_sw_dif, albedo_sw_dir, constant_albedo, day_init, dots_rad, &
361	dt_radiation, emissivity, force_radiation_call, init_radiation, &
362	lambda, lw_radiation, net_radiation, rad_net, rad_net_av, radiation,&
363	radiation_clearsky, radiation_rrtmg, radiation_scheme, &
364	radiation_tendency, rad_lw_in, rad_lw_in_av, rad_lw_out, &
365	rad_lw_out_av, rad_lw_cs_hr, rad_lw_cs_hr_av, rad_lw_hr, &
366	rad_lw_hr_av, rad_sw_in, rad_sw_in_av, rad_sw_out, rad_sw_out_av, &
367	rad_sw_cs_hr, rad_sw_cs_hr_av, rad_sw_hr, rad_sw_hr_av, sigma_sb, &
368	skip_time_do_radiation, sw_radiation, time_radiation, time_utc_init
369
370
371	#if defined ( __rrtmg )
372	PUBLIC rrtm_aldif, rrtm_aldir, rrtm_asdif, rrtm_asdir, rrtm_idrv, &
373	rrtm_lwuflx_dt
374	#endif
375
376	CONTAINS
377
378	!------------------------------------------------------------------------------!
379	! Description:
380	! ------------
381	!> Initialization of the radiation model
382	!------------------------------------------------------------------------------!
383	SUBROUTINE init_radiation
384
385	IMPLICIT NONE
386
387	!
388	!-- Allocate array for storing the surface net radiation
389	IF ( .NOT. ALLOCATED ( rad_net ) ) THEN
390	ALLOCATE ( rad_net(nysg:nyng,nxlg:nxrg) )
391	rad_net = 0.0_wp
392	ENDIF
393
394	!
395	!-- Fix net radiation in case of radiation_scheme = 'constant'
396	IF ( radiation_scheme == 'constant' ) THEN
397	rad_net = net_radiation
398	radiation = .FALSE.
399	!
400	!-- Calculate orbital constants
401	ELSE
402	decl_1 = SIN(23.45_wp * pi / 180.0_wp)
403	decl_2 = 2.0_wp * pi / 365.0_wp
404	decl_3 = decl_2 * 81.0_wp
405	lat = phi * pi / 180.0_wp
406	lon = lambda * pi / 180.0_wp
407	ENDIF
408
409
410	IF ( radiation_scheme == 'clear-sky' ) THEN
411
412	ALLOCATE ( alpha(nysg:nyng,nxlg:nxrg) )
413
414	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
415	ALLOCATE ( rad_sw_in(0:0,nysg:nyng,nxlg:nxrg) )
416	ENDIF
417	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
418	ALLOCATE ( rad_sw_out(0:0,nysg:nyng,nxlg:nxrg) )
419	ENDIF
420
421	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
422	ALLOCATE ( rad_sw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
423	ENDIF
424	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
425	ALLOCATE ( rad_sw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
426	ENDIF
427
428	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
429	ALLOCATE ( rad_lw_in(0:0,nysg:nyng,nxlg:nxrg) )
430	ENDIF
431	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
432	ALLOCATE ( rad_lw_out(0:0,nysg:nyng,nxlg:nxrg) )
433	ENDIF
434
435	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
436	ALLOCATE ( rad_lw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
437	ENDIF
438	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
439	ALLOCATE ( rad_lw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
440	ENDIF
441
442	rad_sw_in = 0.0_wp
443	rad_sw_out = 0.0_wp
444	rad_lw_in = 0.0_wp
445	rad_lw_out = 0.0_wp
446
447	!
448	!-- Overwrite albedo if manually set in parameter file
449	IF ( albedo_type /= 0 .AND. albedo == 9999999.9_wp ) THEN
450	albedo = albedo_pars(2,albedo_type)
451	ENDIF
452
453	alpha = albedo
454
455	!
456	!-- Initialization actions for RRTMG
457	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
458	#if defined ( __rrtmg )
459	!
460	!-- Allocate albedos
461	ALLOCATE ( rrtm_aldif(0:0,nysg:nyng,nxlg:nxrg) )
462	ALLOCATE ( rrtm_aldir(0:0,nysg:nyng,nxlg:nxrg) )
463	ALLOCATE ( rrtm_asdif(0:0,nysg:nyng,nxlg:nxrg) )
464	ALLOCATE ( rrtm_asdir(0:0,nysg:nyng,nxlg:nxrg) )
465	ALLOCATE ( aldif(nysg:nyng,nxlg:nxrg) )
466	ALLOCATE ( aldir(nysg:nyng,nxlg:nxrg) )
467	ALLOCATE ( asdif(nysg:nyng,nxlg:nxrg) )
468	ALLOCATE ( asdir(nysg:nyng,nxlg:nxrg) )
469
470	IF ( albedo_type /= 0 ) THEN
471	IF ( albedo_lw_dif == 9999999.9_wp ) THEN
472	albedo_lw_dif = albedo_pars(0,albedo_type)
473	albedo_lw_dir = albedo_lw_dif
474	ENDIF
475	IF ( albedo_sw_dif == 9999999.9_wp ) THEN
476	albedo_sw_dif = albedo_pars(1,albedo_type)
477	albedo_sw_dir = albedo_sw_dif
478	ENDIF
479	ENDIF
480
481	aldif(:,:) = albedo_lw_dif
482	aldir(:,:) = albedo_lw_dir
483	asdif(:,:) = albedo_sw_dif
484	asdir(:,:) = albedo_sw_dir
485	!
486	!-- Calculate initial values of current (cosine of) the zenith angle and
487	!-- whether the sun is up
488	CALL calc_zenith
489	!
490	!-- Calculate initial surface albedo
491	IF ( .NOT. constant_albedo ) THEN
492	CALL calc_albedo
493	ELSE
494	rrtm_aldif(0,:,:) = aldif(:,:)
495	rrtm_aldir(0,:,:) = aldir(:,:)
496	rrtm_asdif(0,:,:) = asdif(:,:)
497	rrtm_asdir(0,:,:) = asdir(:,:)
498	ENDIF
499
500	!
501	!-- Allocate surface emissivity
502	ALLOCATE ( rrtm_emis(0:0,1:nbndlw+1) )
503	rrtm_emis = emissivity
504
505	!
506	!-- Allocate 3d arrays of radiative fluxes and heating rates
507	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
508	ALLOCATE ( rad_sw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
509	rad_sw_in = 0.0_wp
510	ENDIF
511
512	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
513	ALLOCATE ( rad_sw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
514	ENDIF
515
516	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
517	ALLOCATE ( rad_sw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
518	rad_sw_out = 0.0_wp
519	ENDIF
520
521	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
522	ALLOCATE ( rad_sw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
523	ENDIF
524
525	IF ( .NOT. ALLOCATED ( rad_sw_hr ) ) THEN
526	ALLOCATE ( rad_sw_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
527	rad_sw_hr = 0.0_wp
528	ENDIF
529
530	IF ( .NOT. ALLOCATED ( rad_sw_hr_av ) ) THEN
531	ALLOCATE ( rad_sw_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
532	rad_sw_hr_av = 0.0_wp
533	ENDIF
534
535	IF ( .NOT. ALLOCATED ( rad_sw_cs_hr ) ) THEN
536	ALLOCATE ( rad_sw_cs_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
537	rad_sw_cs_hr = 0.0_wp
538	ENDIF
539
540	IF ( .NOT. ALLOCATED ( rad_sw_cs_hr_av ) ) THEN
541	ALLOCATE ( rad_sw_cs_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
542	rad_sw_cs_hr_av = 0.0_wp
543	ENDIF
544
545	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
546	ALLOCATE ( rad_lw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
547	rad_lw_in = 0.0_wp
548	ENDIF
549
550	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
551	ALLOCATE ( rad_lw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
552	ENDIF
553
554	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
555	ALLOCATE ( rad_lw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
556	rad_lw_out = 0.0_wp
557	ENDIF
558
559	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
560	ALLOCATE ( rad_lw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
561	ENDIF
562
563	IF ( .NOT. ALLOCATED ( rad_lw_hr ) ) THEN
564	ALLOCATE ( rad_lw_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
565	rad_lw_hr = 0.0_wp
566	ENDIF
567
568	IF ( .NOT. ALLOCATED ( rad_lw_hr_av ) ) THEN
569	ALLOCATE ( rad_lw_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
570	rad_lw_hr_av = 0.0_wp
571	ENDIF
572
573	IF ( .NOT. ALLOCATED ( rad_lw_cs_hr ) ) THEN
574	ALLOCATE ( rad_lw_cs_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
575	rad_lw_cs_hr = 0.0_wp
576	ENDIF
577
578	IF ( .NOT. ALLOCATED ( rad_lw_cs_hr_av ) ) THEN
579	ALLOCATE ( rad_lw_cs_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
580	rad_lw_cs_hr_av = 0.0_wp
581	ENDIF
582
583	ALLOCATE ( rad_sw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
584	ALLOCATE ( rad_sw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
585	rad_sw_cs_in = 0.0_wp
586	rad_sw_cs_out = 0.0_wp
587
588	ALLOCATE ( rad_lw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
589	ALLOCATE ( rad_lw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
590	rad_lw_cs_in = 0.0_wp
591	rad_lw_cs_out = 0.0_wp
592
593	!
594	!-- Allocate dummy array for storing surface temperature
595	ALLOCATE ( rrtm_tsfc(1) )
596
597	!
598	!-- Initialize RRTMG
599	IF ( lw_radiation ) CALL rrtmg_lw_ini ( cp )
600	IF ( sw_radiation ) CALL rrtmg_sw_ini ( cp )
601
602	!
603	!-- Set input files for RRTMG
604	INQUIRE(FILE="RAD_SND_DATA", EXIST=snd_exists)
605	IF ( .NOT. snd_exists ) THEN
606	rrtm_input_file = "rrtmg_lw.nc"
607	ENDIF
608
609	!
610	!-- Read vertical layers for RRTMG from sounding data
611	!-- The routine provides nzt_rad, hyp_snd(1:nzt_rad),
612	!-- t_snd(nzt+2:nzt_rad), rrtm_play(1:nzt_rad), rrtm_plev(1_nzt_rad+1),
613	!-- rrtm_tlay(nzt+2:nzt_rad), rrtm_tlev(nzt+2:nzt_rad+1)
614	CALL read_sounding_data
615
616	!
617	!-- Read trace gas profiles from file. This routine provides
618	!-- the rrtm_ arrays (1:nzt_rad+1)
619	CALL read_trace_gas_data
620	#endif
621	ENDIF
622
623	!
624	!-- Perform user actions if required
625	CALL user_init_radiation
626
627
628	!
629	!-- Add timeseries for radiation model
630	dots_rad = dots_num + 1
631	dots_num = dots_num + 5
632
633	dots_label(dots_rad) = "rad_net"
634	dots_label(dots_rad+1) = "rad_lw_in"
635	dots_label(dots_rad+2) = "rad_lw_out"
636	dots_label(dots_rad+3) = "rad_sw_in"
637	dots_label(dots_rad+4) = "rad_sw_out"
638	dots_unit(dots_rad:dots_rad+4) = "W/m2"
639
640	!
641	!-- Output of albedos is only required for RRTMG
642	IF ( radiation_scheme == 'rrtmg' ) THEN
643	dots_num = dots_num + 4
644	dots_label(dots_rad+5) = "rrtm_aldif"
645	dots_label(dots_rad+6) = "rrtm_aldir"
646	dots_label(dots_rad+7) = "rrtm_asdif"
647	dots_label(dots_rad+8) = "rrtm_asdir"
648	dots_unit(dots_num+5:dots_num+8) = ""
649
650	ENDIF
651
652	!
653	!-- Calculate radiative fluxes at model start
654	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
655	IF ( radiation_scheme == 'clear-sky' ) THEN
656	CALL radiation_clearsky
657	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
658	CALL radiation_rrtmg
659	ENDIF
660	ENDIF
661
662	RETURN
663
664	END SUBROUTINE init_radiation
665
666
667	!------------------------------------------------------------------------------!
668	! Description:
669	! ------------
670	!> A simple clear sky radiation model
671	!------------------------------------------------------------------------------!
672	SUBROUTINE radiation_clearsky
673
674	USE indices, &
675	ONLY: nbgp
676
677	IMPLICIT NONE
678
679	INTEGER(iwp) :: i, j, k !< loop indices
680	REAL(wp) :: exn, & !< Exner functions at surface
681	exn_1, & !< Exner functions at first grid level
682	pt_1 !< potential temperature at first grid level
683
684	!
685	!-- Calculate current zenith angle
686	CALL calc_zenith
687
688	!
689	!-- Calculate sky transmissivity
690	sky_trans = 0.6_wp + 0.2_wp * zenith(0)
691
692	!
693	!-- Calculate value of the Exner function
694	exn = (surface_pressure / 1000.0_wp )**0.286_wp
695	!
696	!-- Calculate radiation fluxes and net radiation (rad_net) for each grid
697	!-- point
698	DO i = nxl, nxr
699	DO j = nys, nyn
700	k = nzb_s_inner(j,i)
701
702	exn_1 = (hyp(k+1) / 100000.0_wp )**0.286_wp
703
704	rad_sw_in(0,j,i) = solar_constant * sky_trans * zenith(0)
705	rad_sw_out(0,j,i) = alpha(j,i) * rad_sw_in(0,j,i)
706	rad_lw_out(0,j,i) = emissivity * sigma_sb * (pt(k,j,i) * exn)**4
707
708	IF ( cloud_physics ) THEN
709	pt_1 = pt(k+1,j,i) + l_d_cp / exn_1 * ql(k+1,j,i)
710	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt_1 * exn_1)**4
711	ELSE
712	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt(k+1,j,i) * exn_1)**4
713	ENDIF
714
715	rad_net(j,i) = rad_sw_in(0,j,i) - rad_sw_out(0,j,i) &
716	+ rad_lw_in(0,j,i) - rad_lw_out(0,j,i)
717
718	ENDDO
719	ENDDO
720
721	CALL exchange_horiz_2d( rad_lw_in, nbgp )
722	CALL exchange_horiz_2d( rad_lw_out, nbgp )
723	CALL exchange_horiz_2d( rad_sw_in, nbgp )
724	CALL exchange_horiz_2d( rad_sw_out, nbgp )
725	CALL exchange_horiz_2d( rad_net, nbgp )
726
727	RETURN
728
729	END SUBROUTINE radiation_clearsky
730
731
732	!------------------------------------------------------------------------------!
733	! Description:
734	! ------------
735	!> Implementation of the RRTMG radiation_scheme
736	!------------------------------------------------------------------------------!
737	SUBROUTINE radiation_rrtmg
738
739	USE indices, &
740	ONLY: nbgp
741
742	USE particle_attributes, &
743	ONLY: grid_particles, number_of_particles, particles, &
744	particle_advection_start, prt_count
745
746	IMPLICIT NONE
747
748	#if defined ( __rrtmg )
749
750	INTEGER(iwp) :: i, j, k, n !< loop indices
751
752	REAL(wp) :: s_r2, & !< weighted sum over all droplets with r^2
753	s_r3 !< weighted sum over all droplets with r^3
754
755	!
756	!-- Calculate current (cosine of) zenith angle and whether the sun is up
757	CALL calc_zenith
758	!
759	!-- Calculate surface albedo
760	IF ( .NOT. constant_albedo ) THEN
761	CALL calc_albedo
762	ENDIF
763
764	!
765	!-- Prepare input data for RRTMG
766
767	!
768	!-- In case of large scale forcing with surface data, calculate new pressure
769	!-- profile. nzt_rad might be modified by these calls and all required arrays
770	!-- will then be re-allocated
771	IF ( large_scale_forcing .AND. lsf_surf ) THEN
772	CALL read_sounding_data
773	CALL read_trace_gas_data
774	ENDIF
775	!
776	!-- Loop over all grid points
777	DO i = nxl, nxr
778	DO j = nys, nyn
779
780	!
781	!-- Prepare profiles of temperature and H2O volume mixing ratio
782	rrtm_tlev(0,nzb+1) = pt(nzb,j,i) * ( surface_pressure &
783	/ 1000.0_wp )**0.286_wp
784
785	DO k = nzb+1, nzt+1
786	rrtm_tlay(0,k) = pt(k,j,i) * ( (hyp(k) ) / 100000.0_wp &
787	)*0.286_wp + l_d_cp ql(k,j,i)
788	rrtm_h2ovmr(0,k) = mol_mass_air_d_wv * (q(k,j,i) - ql(k,j,i))
789
790	ENDDO
791
792	!
793	!-- Avoid temperature/humidity jumps at the top of the LES domain by
794	!-- linear interpolation from nzt+2 to nzt+7
795	DO k = nzt+2, nzt+7
796	rrtm_tlay(0,k) = rrtm_tlay(0,nzt+1) &
797	+ ( rrtm_tlay(0,nzt+8) - rrtm_tlay(0,nzt+1) ) &
798	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) ) &
799	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
800
801	rrtm_h2ovmr(0,k) = rrtm_h2ovmr(0,nzt+1) &
802	+ ( rrtm_h2ovmr(0,nzt+8) - rrtm_h2ovmr(0,nzt+1) )&
803	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) )&
804	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
805
806	ENDDO
807
808	!-- Linear interpolate to zw grid
809	DO k = nzb+2, nzt+8
810	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) - &
811	rrtm_tlay(0,k-1)) &
812	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
813	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
814	ENDDO
815
816
817	!
818	!-- Calculate liquid water path and cloud fraction for each column.
819	!-- Note that LWP is required in g/mÂ² instead of kg/kg m.
820	rrtm_cldfr = 0.0_wp
821	rrtm_reliq = 0.0_wp
822	rrtm_cliqwp = 0.0_wp
823	rrtm_icld = 0
824
825	DO k = nzb+1, nzt+1
826	rrtm_cliqwp(0,k) = ql(k,j,i) * 1000.0_wp * &
827	(rrtm_plev(0,k) - rrtm_plev(0,k+1)) &
828	* 100.0_wp / g
829
830	IF ( rrtm_cliqwp(0,k) > 0.0_wp ) THEN
831	rrtm_cldfr(0,k) = 1.0_wp
832	IF ( rrtm_icld == 0 ) rrtm_icld = 1
833
834	!
835	!-- Calculate cloud droplet effective radius
836	IF ( cloud_physics ) THEN
837	rrtm_reliq(0,k) = 1.0E6_wp * ( 3.0_wp * ql(k,j,i) &
838	* rho_surface &
839	/ ( 4.0_wp * pi * nc_const * rho_l ) &
840	)**0.33333333333333_wp &
841	* EXP( LOG( sigma_gc )**2 )
842
843	ELSEIF ( cloud_droplets ) THEN
844	number_of_particles = prt_count(k,j,i)
845
846	IF (number_of_particles <= 0) CYCLE
847	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
848	s_r2 = 0.0_wp
849	s_r3 = 0.0_wp
850
851	DO n = 1, number_of_particles
852	IF ( particles(n)%particle_mask ) THEN
853	s_r2 = s_r2 + particles(n)%radius*2 &
854	particles(n)%weight_factor
855	s_r3 = s_r3 + particles(n)%radius*3 &
856	particles(n)%weight_factor
857	ENDIF
858	ENDDO
859
860	IF ( s_r2 > 0.0_wp ) rrtm_reliq(0,k) = s_r3 / s_r2
861
862	ENDIF
863
864	!
865	!-- Limit effective radius
866	IF ( rrtm_reliq(0,k) > 0.0_wp ) THEN
867	rrtm_reliq(0,k) = MAX(rrtm_reliq(0,k),2.5_wp)
868	rrtm_reliq(0,k) = MIN(rrtm_reliq(0,k),60.0_wp)
869	ENDIF
870	ENDIF
871	ENDDO
872
873	!
874	!-- Set surface temperature
875	rrtm_tsfc = pt(nzb,j,i) * (surface_pressure / 1000.0_wp )**0.286_wp
876
877	IF ( lw_radiation ) THEN
878	CALL rrtmg_lw( 1, nzt_rad , rrtm_icld , rrtm_idrv ,&
879	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
880	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
881	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_cfc11vmr ,&
882	rrtm_cfc12vmr , rrtm_cfc22vmr, rrtm_ccl4vmr , rrtm_emis ,&
883	rrtm_inflglw , rrtm_iceflglw, rrtm_liqflglw, rrtm_cldfr ,&
884	rrtm_lw_taucld , rrtm_cicewp , rrtm_cliqwp , rrtm_reice ,&
885	rrtm_reliq , rrtm_lw_tauaer, &
886	rrtm_lwuflx , rrtm_lwdflx , rrtm_lwhr , &
887	rrtm_lwuflxc , rrtm_lwdflxc , rrtm_lwhrc , &
888	rrtm_lwuflx_dt , rrtm_lwuflxc_dt )
889
890	!
891	!-- Save fluxes
892	DO k = nzb, nzt+1
893	rad_lw_in(k,j,i) = rrtm_lwdflx(0,k)
894	rad_lw_out(k,j,i) = rrtm_lwuflx(0,k)
895	ENDDO
896
897	!
898	!-- Save heating rates (convert from K/d to K/h)
899	DO k = nzb+1, nzt+1
900	rad_lw_hr(k,j,i) = rrtm_lwhr(0,k) * d_hours_day
901	rad_lw_cs_hr(k,j,i) = rrtm_lwhrc(0,k) * d_hours_day
902	ENDDO
903
904	ENDIF
905
906	IF ( sw_radiation .AND. sun_up ) THEN
907	CALL rrtmg_sw( 1, nzt_rad , rrtm_icld , rrtm_iaer ,&
908	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
909	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
910	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_asdir(:,j,i),&
911	rrtm_asdif(:,j,i), rrtm_aldir(:,j,i), rrtm_aldif(:,j,i), zenith,&
912	0.0_wp , day , solar_constant, rrtm_inflgsw,&
913	rrtm_iceflgsw , rrtm_liqflgsw, rrtm_cldfr , rrtm_sw_taucld ,&
914	rrtm_sw_ssacld , rrtm_sw_asmcld, rrtm_sw_fsfcld, rrtm_cicewp ,&
915	rrtm_cliqwp , rrtm_reice , rrtm_reliq , rrtm_sw_tauaer ,&
916	rrtm_sw_ssaaer , rrtm_sw_asmaer , rrtm_sw_ecaer , &
917	rrtm_swuflx , rrtm_swdflx , rrtm_swhr , &
918	rrtm_swuflxc , rrtm_swdflxc , rrtm_swhrc )
919
920	!
921	!-- Save fluxes
922	DO k = nzb, nzt+1
923	rad_sw_in(k,j,i) = rrtm_swdflx(0,k)
924	rad_sw_out(k,j,i) = rrtm_swuflx(0,k)
925	ENDDO
926
927	!
928	!-- Save heating rates (convert from K/d to K/s)
929	DO k = nzb+1, nzt+1
930	rad_sw_hr(k,j,i) = rrtm_swhr(0,k) * d_hours_day
931	rad_sw_cs_hr(k,j,i) = rrtm_swhrc(0,k) * d_hours_day
932	ENDDO
933
934	ENDIF
935
936	!
937	!-- Calculate surface net radiation
938	rad_net(j,i) = rad_sw_in(nzb,j,i) - rad_sw_out(nzb,j,i) &
939	+ rad_lw_in(nzb,j,i) - rad_lw_out(nzb,j,i)
940
941	ENDDO
942	ENDDO
943
944	CALL exchange_horiz( rad_lw_in, nbgp )
945	CALL exchange_horiz( rad_lw_out, nbgp )
946	CALL exchange_horiz( rad_lw_hr, nbgp )
947	CALL exchange_horiz( rad_lw_cs_hr, nbgp )
948
949	CALL exchange_horiz( rad_sw_in, nbgp )
950	CALL exchange_horiz( rad_sw_out, nbgp )
951	CALL exchange_horiz( rad_sw_hr, nbgp )
952	CALL exchange_horiz( rad_sw_cs_hr, nbgp )
953
954	CALL exchange_horiz_2d( rad_net, nbgp )
955	#endif
956
957	END SUBROUTINE radiation_rrtmg
958
959
960	!------------------------------------------------------------------------------!
961	! Description:
962	! ------------
963	!> Calculate the cosine of the zenith angle (variable is called zenith)
964	!------------------------------------------------------------------------------!
965	SUBROUTINE calc_zenith
966
967	IMPLICIT NONE
968
969	REAL(wp) :: declination, & !< solar declination angle
970	hour_angle !< solar hour angle
971	!
972	!-- Calculate current day and time based on the initial values and simulation
973	!-- time
974	day = day_init + INT(FLOOR( (time_utc_init + time_since_reference_point) &
975	/ 86400.0_wp ), KIND=iwp)
976	time_utc = MOD((time_utc_init + time_since_reference_point), 86400.0_wp)
977
978
979	!
980	!-- Calculate solar declination and hour angle
981	declination = ASIN( decl_1 * SIN(decl_2 * REAL(day, KIND=wp) - decl_3) )
982	hour_angle = 2.0_wp * pi * (time_utc / 86400.0_wp) + lon - pi
983
984	!
985	!-- Calculate zenith angle
986	zenith(0) = SIN(lat) * SIN(declination) + COS(lat) * COS(declination) &
987	* COS(hour_angle)
988	zenith(0) = MAX(0.0_wp,zenith(0))
989
990	!
991	!-- Check if the sun is up (otheriwse shortwave calculations can be skipped)
992	IF ( zenith(0) > 0.0_wp ) THEN
993	sun_up = .TRUE.
994	ELSE
995	sun_up = .FALSE.
996	END IF
997
998	END SUBROUTINE calc_zenith
999
1000	#if defined ( __rrtmg ) && defined ( __netcdf )
1001	!------------------------------------------------------------------------------!
1002	! Description:
1003	! ------------
1004	!> Calculates surface albedo components based on Briegleb (1992) and
1005	!> Briegleb et al. (1986)
1006	!------------------------------------------------------------------------------!
1007	SUBROUTINE calc_albedo
1008
1009	IMPLICIT NONE
1010
1011	IF ( sun_up ) THEN
1012	!
1013	!-- Ocean
1014	IF ( albedo_type == 1 ) THEN
1015	rrtm_aldir(0,:,:) = 0.026_wp / ( zenith(0)**1.7_wp + 0.065_wp ) &
1016	+ 0.15_wp * ( zenith(0) - 0.1_wp ) &
1017	* ( zenith(0) - 0.5_wp ) &
1018	* ( zenith(0) - 1.0_wp )
1019	rrtm_asdir(0,:,:) = rrtm_aldir(0,:,:)
1020	!
1021	!-- Snow
1022	ELSEIF ( albedo_type == 16 ) THEN
1023	IF ( zenith(0) < 0.5_wp ) THEN
1024	rrtm_aldir(0,:,:) = 0.5_wp * (1.0_wp - aldif) &
1025	* ( 3.0_wp / (1.0_wp + 4.0_wp &
1026	* zenith(0))) - 1.0_wp
1027	rrtm_asdir(0,:,:) = 0.5_wp * (1.0_wp - asdif) &
1028	* ( 3.0_wp / (1.0_wp + 4.0_wp &
1029	* zenith(0))) - 1.0_wp
1030
1031	rrtm_aldir(0,:,:) = MIN(0.98_wp, rrtm_aldir(0,:,:))
1032	rrtm_asdir(0,:,:) = MIN(0.98_wp, rrtm_asdir(0,:,:))
1033	ELSE
1034	rrtm_aldir(0,:,:) = aldif
1035	rrtm_asdir(0,:,:) = asdif
1036	ENDIF
1037	!
1038	!-- Sea ice
1039	ELSEIF ( albedo_type == 15 ) THEN
1040	rrtm_aldir(0,:,:) = aldif
1041	rrtm_asdir(0,:,:) = asdif
1042	!
1043	!-- Land surfaces
1044	ELSE
1045	SELECT CASE ( albedo_type )
1046
1047	!
1048	!-- Surface types with strong zenith dependence
1049	CASE ( 1, 2, 3, 4, 11, 12, 13 )
1050	rrtm_aldir(0,:,:) = aldif * 1.4_wp / &
1051	(1.0_wp + 0.8_wp * zenith(0))
1052	rrtm_asdir(0,:,:) = asdif * 1.4_wp / &
1053	(1.0_wp + 0.8_wp * zenith(0))
1054	!
1055	!-- Surface types with weak zenith dependence
1056	CASE ( 5, 6, 7, 8, 9, 10, 14 )
1057	rrtm_aldir(0,:,:) = aldif * 1.1_wp / &
1058	(1.0_wp + 0.2_wp * zenith(0))
1059	rrtm_asdir(0,:,:) = asdif * 1.1_wp / &
1060	(1.0_wp + 0.2_wp * zenith(0))
1061
1062	CASE DEFAULT
1063
1064	END SELECT
1065	ENDIF
1066	!
1067	!-- Diffusive albedo is taken from Table 2
1068	rrtm_aldif(0,:,:) = aldif
1069	rrtm_asdif(0,:,:) = asdif
1070
1071	ELSE
1072
1073	rrtm_aldir(0,:,:) = 0.0_wp
1074	rrtm_asdir(0,:,:) = 0.0_wp
1075	rrtm_aldif(0,:,:) = 0.0_wp
1076	rrtm_asdif(0,:,:) = 0.0_wp
1077	ENDIF
1078	END SUBROUTINE calc_albedo
1079
1080	!------------------------------------------------------------------------------!
1081	! Description:
1082	! ------------
1083	!> Read sounding data (pressure and temperature) from RADIATION_DATA.
1084	!------------------------------------------------------------------------------!
1085	SUBROUTINE read_sounding_data
1086
1087	USE netcdf_control
1088
1089	IMPLICIT NONE
1090
1091	INTEGER(iwp) :: id, & !< NetCDF id of input file
1092	id_dim_zrad, & !< pressure level id in the NetCDF file
1093	id_var, & !< NetCDF variable id
1094	k, & !< loop index
1095	nz_snd, & !< number of vertical levels in the sounding data
1096	nz_snd_start, & !< start vertical index for sounding data to be used
1097	nz_snd_end !< end vertical index for souding data to be used
1098
1099	REAL(wp) :: t_surface !< actual surface temperature
1100
1101	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd_tmp, & !< temporary hydrostatic pressure profile (sounding)
1102	t_snd_tmp !< temporary temperature profile (sounding)
1103
1104	!
1105	!-- In case of updates, deallocate arrays first (sufficient to check one
1106	!-- array as the others are automatically allocated). This is required
1107	!-- because nzt_rad might change during the update
1108	IF ( ALLOCATED ( hyp_snd ) ) THEN
1109	DEALLOCATE( hyp_snd )
1110	DEALLOCATE( t_snd )
1111	DEALLOCATE( q_snd )
1112	DEALLOCATE ( rrtm_play )
1113	DEALLOCATE ( rrtm_plev )
1114	DEALLOCATE ( rrtm_tlay )
1115	DEALLOCATE ( rrtm_tlev )
1116
1117	DEALLOCATE ( rrtm_h2ovmr )
1118	DEALLOCATE ( rrtm_cicewp )
1119	DEALLOCATE ( rrtm_cldfr )
1120	DEALLOCATE ( rrtm_cliqwp )
1121	DEALLOCATE ( rrtm_reice )
1122	DEALLOCATE ( rrtm_reliq )
1123	DEALLOCATE ( rrtm_lw_taucld )
1124	DEALLOCATE ( rrtm_lw_tauaer )
1125
1126	DEALLOCATE ( rrtm_lwdflx )
1127	DEALLOCATE ( rrtm_lwdflxc )
1128	DEALLOCATE ( rrtm_lwuflx )
1129	DEALLOCATE ( rrtm_lwuflxc )
1130	DEALLOCATE ( rrtm_lwuflx_dt )
1131	DEALLOCATE ( rrtm_lwuflxc_dt )
1132	DEALLOCATE ( rrtm_lwhr )
1133	DEALLOCATE ( rrtm_lwhrc )
1134
1135	DEALLOCATE ( rrtm_sw_taucld )
1136	DEALLOCATE ( rrtm_sw_ssacld )
1137	DEALLOCATE ( rrtm_sw_asmcld )
1138	DEALLOCATE ( rrtm_sw_fsfcld )
1139	DEALLOCATE ( rrtm_sw_tauaer )
1140	DEALLOCATE ( rrtm_sw_ssaaer )
1141	DEALLOCATE ( rrtm_sw_asmaer )
1142	DEALLOCATE ( rrtm_sw_ecaer )
1143
1144	DEALLOCATE ( rrtm_swdflx )
1145	DEALLOCATE ( rrtm_swdflxc )
1146	DEALLOCATE ( rrtm_swuflx )
1147	DEALLOCATE ( rrtm_swuflxc )
1148	DEALLOCATE ( rrtm_swhr )
1149	DEALLOCATE ( rrtm_swhrc )
1150
1151	ENDIF
1152
1153	!
1154	!-- Open file for reading
1155	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
1156	CALL handle_netcdf_error( 'netcdf', 549 )
1157
1158	!
1159	!-- Inquire dimension of z axis and save in nz_snd
1160	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim_zrad )
1161	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim_zrad, len = nz_snd )
1162	CALL handle_netcdf_error( 'netcdf', 551 )
1163
1164	!
1165	! !-- Allocate temporary array for storing pressure data
1166	ALLOCATE( hyp_snd_tmp(1:nz_snd) )
1167	hyp_snd_tmp = 0.0_wp
1168
1169
1170	!-- Read pressure from file
1171	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
1172	nc_stat = NF90_GET_VAR( id, id_var, hyp_snd_tmp(:), start = (/1/), &
1173	count = (/nz_snd/) )
1174	CALL handle_netcdf_error( 'netcdf', 552 )
1175
1176	!
1177	!-- Allocate temporary array for storing temperature data
1178	ALLOCATE( t_snd_tmp(1:nz_snd) )
1179	t_snd_tmp = 0.0_wp
1180
1181	!
1182	!-- Read temperature from file
1183	nc_stat = NF90_INQ_VARID( id, "ReferenceTemperature", id_var )
1184	nc_stat = NF90_GET_VAR( id, id_var, t_snd_tmp(:), start = (/1/), &
1185	count = (/nz_snd/) )
1186	CALL handle_netcdf_error( 'netcdf', 553 )
1187
1188	!
1189	!-- Calculate start of sounding data
1190	nz_snd_start = nz_snd + 1
1191	nz_snd_end = nz_snd + 1
1192
1193	!
1194	!-- Start filling vertical dimension at 10hPa above the model domain (hyp is
1195	!-- in Pa, hyp_snd in hPa).
1196	DO k = 1, nz_snd
1197	IF ( hyp_snd_tmp(k) < ( hyp(nzt+1) - 1000.0_wp) * 0.01_wp ) THEN
1198	nz_snd_start = k
1199	EXIT
1200	END IF
1201	END DO
1202
1203	IF ( nz_snd_start <= nz_snd ) THEN
1204	nz_snd_end = nz_snd
1205	END IF
1206
1207
1208	!
1209	!-- Calculate of total grid points for RRTMG calculations
1210	nzt_rad = nzt + nz_snd_end - nz_snd_start + 1
1211
1212	!
1213	!-- Save data above LES domain in hyp_snd, t_snd and q_snd
1214	!-- Note: q_snd_tmp is not calculated at the moment (dry residual atmosphere)
1215	ALLOCATE( hyp_snd(nzb+1:nzt_rad) )
1216	ALLOCATE( t_snd(nzb+1:nzt_rad) )
1217	ALLOCATE( q_snd(nzb+1:nzt_rad) )
1218	hyp_snd = 0.0_wp
1219	t_snd = 0.0_wp
1220	q_snd = 0.0_wp
1221
1222	hyp_snd(nzt+2:nzt_rad) = hyp_snd_tmp(nz_snd_start:nz_snd_end)
1223	t_snd(nzt+2:nzt_rad) = t_snd_tmp(nz_snd_start:nz_snd_end)
1224
1225	DEALLOCATE ( hyp_snd_tmp )
1226	DEALLOCATE ( t_snd_tmp )
1227
1228	nc_stat = NF90_CLOSE( id )
1229
1230	!
1231	!-- Calculate pressure levels on zu and zw grid. Sounding data is added at
1232	!-- top of the LES domain. This routine does not consider horizontal or
1233	!-- vertical variability of pressure and temperature
1234	ALLOCATE ( rrtm_play(0:0,nzb+1:nzt_rad+1) )
1235	ALLOCATE ( rrtm_plev(0:0,nzb+1:nzt_rad+2) )
1236
1237	t_surface = pt_surface * ( surface_pressure / 1000.0_wp )**0.286_wp
1238	DO k = nzb+1, nzt+1
1239	rrtm_play(0,k) = hyp(k) * 0.01_wp
1240	rrtm_plev(0,k) = surface_pressure * ( (t_surface - g/cp * zw(k-1)) / &
1241	t_surface )**(1.0_wp/0.286_wp)
1242	ENDDO
1243
1244	DO k = nzt+2, nzt_rad
1245	rrtm_play(0,k) = hyp_snd(k)
1246	rrtm_plev(0,k) = 0.5_wp * ( rrtm_play(0,k) + rrtm_play(0,k-1) )
1247	ENDDO
1248	rrtm_plev(0,nzt_rad+1) = MAX( 0.5 * hyp_snd(nzt_rad), &
1249	1.5 * hyp_snd(nzt_rad) &
1250	- 0.5 * hyp_snd(nzt_rad-1) )
1251	rrtm_plev(0,nzt_rad+2) = MIN( 1.0E-4_wp, &
1252	0.25_wp * rrtm_plev(0,nzt_rad+1) )
1253
1254	rrtm_play(0,nzt_rad+1) = 0.5 * rrtm_plev(0,nzt_rad+1)
1255
1256	!
1257	!-- Calculate temperature/humidity levels at top of the LES domain.
1258	!-- Currently, the temperature is taken from sounding data (might lead to a
1259	!-- temperature jump at interface. To do: Humidity is currently not
1260	!-- calculated above the LES domain.
1261	ALLOCATE ( rrtm_tlay(0:0,nzb+1:nzt_rad+1) )
1262	ALLOCATE ( rrtm_tlev(0:0,nzb+1:nzt_rad+2) )
1263	ALLOCATE ( rrtm_h2ovmr(0:0,nzb+1:nzt_rad+1) )
1264
1265	DO k = nzt+8, nzt_rad
1266	rrtm_tlay(0,k) = t_snd(k)
1267	rrtm_h2ovmr(0,k) = q_snd(k)
1268	ENDDO
1269	rrtm_tlay(0,nzt_rad+1) = 2.0_wp * rrtm_tlay(0,nzt_rad) &
1270	- rrtm_tlay(0,nzt_rad-1)
1271	DO k = nzt+9, nzt_rad+1
1272	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) &
1273	- rrtm_tlay(0,k-1)) &
1274	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
1275	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
1276	ENDDO
1277	rrtm_h2ovmr(0,nzt_rad+1) = rrtm_h2ovmr(0,nzt_rad)
1278
1279	rrtm_tlev(0,nzt_rad+2) = 2.0_wp * rrtm_tlay(0,nzt_rad+1) &
1280	- rrtm_tlev(0,nzt_rad)
1281	!
1282	!-- Allocate remaining RRTMG arrays
1283	ALLOCATE ( rrtm_cicewp(0:0,nzb+1:nzt_rad+1) )
1284	ALLOCATE ( rrtm_cldfr(0:0,nzb+1:nzt_rad+1) )
1285	ALLOCATE ( rrtm_cliqwp(0:0,nzb+1:nzt_rad+1) )
1286	ALLOCATE ( rrtm_reice(0:0,nzb+1:nzt_rad+1) )
1287	ALLOCATE ( rrtm_reliq(0:0,nzb+1:nzt_rad+1) )
1288	ALLOCATE ( rrtm_lw_taucld(1:nbndlw+1,0:0,nzb+1:nzt_rad+1) )
1289	ALLOCATE ( rrtm_lw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndlw+1) )
1290	ALLOCATE ( rrtm_sw_taucld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
1291	ALLOCATE ( rrtm_sw_ssacld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
1292	ALLOCATE ( rrtm_sw_asmcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
1293	ALLOCATE ( rrtm_sw_fsfcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
1294	ALLOCATE ( rrtm_sw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
1295	ALLOCATE ( rrtm_sw_ssaaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
1296	ALLOCATE ( rrtm_sw_asmaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
1297	ALLOCATE ( rrtm_sw_ecaer(0:0,nzb+1:nzt_rad+1,1:naerec+1) )
1298
1299	!
1300	!-- The ice phase is currently not considered in PALM
1301	rrtm_cicewp = 0.0_wp
1302	rrtm_reice = 0.0_wp
1303
1304	!
1305	!-- Set other parameters (move to NAMELIST parameters in the future)
1306	rrtm_lw_tauaer = 0.0_wp
1307	rrtm_lw_taucld = 0.0_wp
1308	rrtm_sw_taucld = 0.0_wp
1309	rrtm_sw_ssacld = 0.0_wp
1310	rrtm_sw_asmcld = 0.0_wp
1311	rrtm_sw_fsfcld = 0.0_wp
1312	rrtm_sw_tauaer = 0.0_wp
1313	rrtm_sw_ssaaer = 0.0_wp
1314	rrtm_sw_asmaer = 0.0_wp
1315	rrtm_sw_ecaer = 0.0_wp
1316
1317
1318	ALLOCATE ( rrtm_swdflx(0:0,nzb:nzt_rad+1) )
1319	ALLOCATE ( rrtm_swuflx(0:0,nzb:nzt_rad+1) )
1320	ALLOCATE ( rrtm_swhr(0:0,nzb+1:nzt_rad+1) )
1321	ALLOCATE ( rrtm_swuflxc(0:0,nzb:nzt_rad+1) )
1322	ALLOCATE ( rrtm_swdflxc(0:0,nzb:nzt_rad+1) )
1323	ALLOCATE ( rrtm_swhrc(0:0,nzb+1:nzt_rad+1) )
1324
1325	rrtm_swdflx = 0.0_wp
1326	rrtm_swuflx = 0.0_wp
1327	rrtm_swhr = 0.0_wp
1328	rrtm_swuflxc = 0.0_wp
1329	rrtm_swdflxc = 0.0_wp
1330	rrtm_swhrc = 0.0_wp
1331
1332	ALLOCATE ( rrtm_lwdflx(0:0,nzb:nzt_rad+1) )
1333	ALLOCATE ( rrtm_lwuflx(0:0,nzb:nzt_rad+1) )
1334	ALLOCATE ( rrtm_lwhr(0:0,nzb+1:nzt_rad+1) )
1335	ALLOCATE ( rrtm_lwuflxc(0:0,nzb:nzt_rad+1) )
1336	ALLOCATE ( rrtm_lwdflxc(0:0,nzb:nzt_rad+1) )
1337	ALLOCATE ( rrtm_lwhrc(0:0,nzb+1:nzt_rad+1) )
1338
1339	rrtm_lwdflx = 0.0_wp
1340	rrtm_lwuflx = 0.0_wp
1341	rrtm_lwhr = 0.0_wp
1342	rrtm_lwuflxc = 0.0_wp
1343	rrtm_lwdflxc = 0.0_wp
1344	rrtm_lwhrc = 0.0_wp
1345
1346	ALLOCATE ( rrtm_lwuflx_dt(0:0,nzb:nzt_rad+1) )
1347	ALLOCATE ( rrtm_lwuflxc_dt(0:0,nzb:nzt_rad+1) )
1348
1349	rrtm_lwuflxc_dt = 0.0_wp
1350	rrtm_lwuflxc_dt = 0.0_wp
1351
1352	END SUBROUTINE read_sounding_data
1353
1354
1355	!------------------------------------------------------------------------------!
1356	! Description:
1357	! ------------
1358	!> Read trace gas data from file
1359	!------------------------------------------------------------------------------!
1360	SUBROUTINE read_trace_gas_data
1361
1362	USE netcdf_control
1363	USE rrsw_ncpar
1364
1365	IMPLICIT NONE
1366
1367	INTEGER(iwp), PARAMETER :: num_trace_gases = 9 !< number of trace gases (absorbers)
1368
1369	CHARACTER(LEN=5), DIMENSION(num_trace_gases), PARAMETER :: & !< trace gas names
1370	trace_names = (/'O3 ', 'CO2 ', 'CH4 ', 'N2O ', 'O2 ', &
1371	'CFC11', 'CFC12', 'CFC22', 'CCL4 '/)
1372
1373	INTEGER(iwp) :: id, & !< NetCDF id
1374	k, & !< loop index
1375	m, & !< loop index
1376	n, & !< loop index
1377	nabs, & !< number of absorbers
1378	np, & !< number of pressure levels
1379	id_abs, & !< NetCDF id of the respective absorber
1380	id_dim, & !< NetCDF id of asborber's dimension
1381	id_var !< NetCDf id ot the absorber
1382
1383	REAL(wp) :: p_mls_l, p_mls_u, p_wgt_l, p_wgt_u, p_mls_m
1384
1385
1386	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_mls, & !< pressure levels for the absorbers
1387	rrtm_play_tmp, & !< temporary array for pressure zu-levels
1388	rrtm_plev_tmp, & !< temporary array for pressure zw-levels
1389	trace_path_tmp !< temporary array for storing trace gas path data
1390
1391	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: trace_mls, & !< array for storing the absorber amounts
1392	trace_mls_path, & !< array for storing trace gas path data
1393	trace_mls_tmp !< temporary array for storing trace gas data
1394
1395
1396	!
1397	!-- In case of updates, deallocate arrays first (sufficient to check one
1398	!-- array as the others are automatically allocated)
1399	IF ( ALLOCATED ( rrtm_o3vmr ) ) THEN
1400	DEALLOCATE ( rrtm_o3vmr )
1401	DEALLOCATE ( rrtm_co2vmr )
1402	DEALLOCATE ( rrtm_ch4vmr )
1403	DEALLOCATE ( rrtm_n2ovmr )
1404	DEALLOCATE ( rrtm_o2vmr )
1405	DEALLOCATE ( rrtm_cfc11vmr )
1406	DEALLOCATE ( rrtm_cfc12vmr )
1407	DEALLOCATE ( rrtm_cfc22vmr )
1408	DEALLOCATE ( rrtm_ccl4vmr )
1409	ENDIF
1410
1411	!
1412	!-- Allocate trace gas profiles
1413	ALLOCATE ( rrtm_o3vmr(0:0,1:nzt_rad+1) )
1414	ALLOCATE ( rrtm_co2vmr(0:0,1:nzt_rad+1) )
1415	ALLOCATE ( rrtm_ch4vmr(0:0,1:nzt_rad+1) )
1416	ALLOCATE ( rrtm_n2ovmr(0:0,1:nzt_rad+1) )
1417	ALLOCATE ( rrtm_o2vmr(0:0,1:nzt_rad+1) )
1418	ALLOCATE ( rrtm_cfc11vmr(0:0,1:nzt_rad+1) )
1419	ALLOCATE ( rrtm_cfc12vmr(0:0,1:nzt_rad+1) )
1420	ALLOCATE ( rrtm_cfc22vmr(0:0,1:nzt_rad+1) )
1421	ALLOCATE ( rrtm_ccl4vmr(0:0,1:nzt_rad+1) )
1422
1423	!
1424	!-- Open file for reading
1425	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
1426	CALL handle_netcdf_error( 'netcdf', 549 )
1427	!
1428	!-- Inquire dimension ids and dimensions
1429	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim )
1430	CALL handle_netcdf_error( 'netcdf', 550 )
1431	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = np)
1432	CALL handle_netcdf_error( 'netcdf', 550 )
1433
1434	nc_stat = NF90_INQ_DIMID( id, "Absorber", id_dim )
1435	CALL handle_netcdf_error( 'netcdf', 550 )
1436	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = nabs )
1437	CALL handle_netcdf_error( 'netcdf', 550 )
1438
1439
1440	!
1441	!-- Allocate pressure, and trace gas arrays
1442	ALLOCATE( p_mls(1:np) )
1443	ALLOCATE( trace_mls(1:num_trace_gases,1:np) )
1444	ALLOCATE( trace_mls_tmp(1:nabs,1:np) )
1445
1446
1447	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
1448	CALL handle_netcdf_error( 'netcdf', 550 )
1449	nc_stat = NF90_GET_VAR( id, id_var, p_mls )
1450	CALL handle_netcdf_error( 'netcdf', 550 )
1451
1452	nc_stat = NF90_INQ_VARID( id, "AbsorberAmountMLS", id_var )
1453	CALL handle_netcdf_error( 'netcdf', 550 )
1454	nc_stat = NF90_GET_VAR( id, id_var, trace_mls_tmp )
1455	CALL handle_netcdf_error( 'netcdf', 550 )
1456
1457
1458	!
1459	!-- Write absorber amounts (mls) to trace_mls
1460	DO n = 1, num_trace_gases
1461	CALL getAbsorberIndex( TRIM( trace_names(n) ), id_abs )
1462
1463	trace_mls(n,1:np) = trace_mls_tmp(id_abs,1:np)
1464
1465	!
1466	!-- Replace missing values by zero
1467	WHERE ( trace_mls(n,:) > 2.0_wp )
1468	trace_mls(n,:) = 0.0_wp
1469	END WHERE
1470	END DO
1471
1472	DEALLOCATE ( trace_mls_tmp )
1473
1474	nc_stat = NF90_CLOSE( id )
1475	CALL handle_netcdf_error( 'netcdf', 551 )
1476
1477	!
1478	!-- Add extra pressure level for calculations of the trace gas paths
1479	ALLOCATE ( rrtm_play_tmp(1:nzt_rad+1) )
1480	ALLOCATE ( rrtm_plev_tmp(1:nzt_rad+2) )
1481
1482	rrtm_play_tmp(1:nzt_rad) = rrtm_play(0,1:nzt_rad)
1483	rrtm_plev_tmp(1:nzt_rad+1) = rrtm_plev(0,1:nzt_rad+1)
1484	rrtm_play_tmp(nzt_rad+1) = rrtm_plev(0,nzt_rad+1) * 0.5_wp
1485	rrtm_plev_tmp(nzt_rad+2) = MIN( 1.0E-4_wp, 0.25_wp &
1486	* rrtm_plev(0,nzt_rad+1) )
1487
1488	!
1489	!-- Calculate trace gas path (zero at surface) with interpolation to the
1490	!-- sounding levels
1491	ALLOCATE ( trace_mls_path(1:nzt_rad+2,1:num_trace_gases) )
1492
1493	trace_mls_path(nzb+1,:) = 0.0_wp
1494
1495	DO k = nzb+2, nzt_rad+2
1496	DO m = 1, num_trace_gases
1497	trace_mls_path(k,m) = trace_mls_path(k-1,m)
1498
1499	!
1500	!-- When the pressure level is higher than the trace gas pressure
1501	!-- level, assume that
1502	IF ( rrtm_plev_tmp(k-1) > p_mls(1) ) THEN
1503
1504	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,1) &
1505	* ( rrtm_plev_tmp(k-1) &
1506	- MAX( p_mls(1), rrtm_plev_tmp(k) ) &
1507	) / g
1508	ENDIF
1509
1510	!
1511	!-- Integrate for each sounding level from the contributing p_mls
1512	!-- levels
1513	DO n = 2, np
1514	!
1515	!-- Limit p_mls so that it is within the model level
1516	p_mls_u = MIN( rrtm_plev_tmp(k-1), &
1517	MAX( rrtm_plev_tmp(k), p_mls(n) ) )
1518	p_mls_l = MIN( rrtm_plev_tmp(k-1), &
1519	MAX( rrtm_plev_tmp(k), p_mls(n-1) ) )
1520
1521	IF ( p_mls_l > p_mls_u ) THEN
1522
1523	!
1524	!-- Calculate weights for interpolation
1525	p_mls_m = 0.5_wp * (p_mls_l + p_mls_u)
1526	p_wgt_u = (p_mls(n-1) - p_mls_m) / (p_mls(n-1) - p_mls(n))
1527	p_wgt_l = (p_mls_m - p_mls(n)) / (p_mls(n-1) - p_mls(n))
1528
1529	!
1530	!-- Add level to trace gas path
1531	trace_mls_path(k,m) = trace_mls_path(k,m) &
1532	+ ( p_wgt_u * trace_mls(m,n) &
1533	+ p_wgt_l * trace_mls(m,n-1) ) &
1534	* (p_mls_l - p_mls_u) / g
1535	ENDIF
1536	ENDDO
1537
1538	IF ( rrtm_plev_tmp(k) < p_mls(np) ) THEN
1539	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,np) &
1540	* ( MIN( rrtm_plev_tmp(k-1), p_mls(np) ) &
1541	- rrtm_plev_tmp(k) &
1542	) / g
1543	ENDIF
1544	ENDDO
1545	ENDDO
1546
1547
1548	!
1549	!-- Prepare trace gas path profiles
1550	ALLOCATE ( trace_path_tmp(1:nzt_rad+1) )
1551
1552	DO m = 1, num_trace_gases
1553
1554	trace_path_tmp(1:nzt_rad+1) = ( trace_mls_path(2:nzt_rad+2,m) &
1555	- trace_mls_path(1:nzt_rad+1,m) ) * g &
1556	/ ( rrtm_plev_tmp(1:nzt_rad+1) &
1557	- rrtm_plev_tmp(2:nzt_rad+2) )
1558
1559	!
1560	!-- Save trace gas paths to the respective arrays
1561	SELECT CASE ( TRIM( trace_names(m) ) )
1562
1563	CASE ( 'O3' )
1564
1565	rrtm_o3vmr(0,:) = trace_path_tmp(:)
1566
1567	CASE ( 'CO2' )
1568
1569	rrtm_co2vmr(0,:) = trace_path_tmp(:)
1570
1571	CASE ( 'CH4' )
1572
1573	rrtm_ch4vmr(0,:) = trace_path_tmp(:)
1574
1575	CASE ( 'N2O' )
1576
1577	rrtm_n2ovmr(0,:) = trace_path_tmp(:)
1578
1579	CASE ( 'O2' )
1580
1581	rrtm_o2vmr(0,:) = trace_path_tmp(:)
1582
1583	CASE ( 'CFC11' )
1584
1585	rrtm_cfc11vmr(0,:) = trace_path_tmp(:)
1586
1587	CASE ( 'CFC12' )
1588
1589	rrtm_cfc12vmr(0,:) = trace_path_tmp(:)
1590
1591	CASE ( 'CFC22' )
1592
1593	rrtm_cfc22vmr(0,:) = trace_path_tmp(:)
1594
1595	CASE ( 'CCL4' )
1596
1597	rrtm_ccl4vmr(0,:) = trace_path_tmp(:)
1598
1599	CASE DEFAULT
1600
1601	END SELECT
1602
1603	ENDDO
1604
1605	DEALLOCATE ( trace_path_tmp )
1606	DEALLOCATE ( trace_mls_path )
1607	DEALLOCATE ( rrtm_play_tmp )
1608	DEALLOCATE ( rrtm_plev_tmp )
1609	DEALLOCATE ( trace_mls )
1610	DEALLOCATE ( p_mls )
1611
1612	END SUBROUTINE read_trace_gas_data
1613
1614	#endif
1615
1616
1617	!------------------------------------------------------------------------------!
1618	! Description:
1619	! ------------
1620	!> Calculate temperature tendency due to radiative cooling/heating.
1621	!> Cache-optimized version.
1622	!------------------------------------------------------------------------------!
1623	SUBROUTINE radiation_tendency_ij ( i, j, tend )
1624
1625	USE cloud_parameters, &
1626	ONLY: pt_d_t
1627
1628	IMPLICIT NONE
1629
1630	INTEGER(iwp) :: i, j, k !< loop indices
1631
1632	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend !< pt tendency term
1633
1634	#if defined ( __rrtmg )
1635	!
1636	!-- Calculate tendency based on heating rate
1637	DO k = nzb+1, nzt+1
1638	tend(k,j,i) = tend(k,j,i) + (rad_lw_hr(k,j,i) + rad_sw_hr(k,j,i)) &
1639	* pt_d_t(k) * d_seconds_hour
1640	ENDDO
1641
1642	#endif
1643
1644	END SUBROUTINE radiation_tendency_ij
1645
1646
1647	!------------------------------------------------------------------------------!
1648	! Description:
1649	! ------------
1650	!> Calculate temperature tendency due to radiative cooling/heating.
1651	!> Vector-optimized version
1652	!------------------------------------------------------------------------------!
1653	SUBROUTINE radiation_tendency ( tend )
1654
1655	USE cloud_parameters, &
1656	ONLY: pt_d_t
1657
1658	USE indices, &
1659	ONLY: nxl, nxr, nyn, nys
1660
1661	IMPLICIT NONE
1662
1663	INTEGER(iwp) :: i, j, k !< loop indices
1664
1665	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend !< pt tendency term
1666
1667	#if defined ( __rrtmg )
1668	!
1669	!-- Calculate tendency based on heating rate
1670	DO i = nxl, nxr
1671	DO j = nys, nyn
1672	DO k = nzb+1, nzt+1
1673	tend(k,j,i) = tend(k,j,i) + ( rad_lw_hr(k,j,i) &
1674	+ rad_sw_hr(k,j,i) ) * pt_d_t(k) &
1675	* d_seconds_hour
1676	ENDDO
1677	ENDDO
1678	ENDDO
1679	#endif
1680
1681	END SUBROUTINE radiation_tendency
1682
1683	END MODULE radiation_model_mod

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