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source: palm/trunk/SOURCE/radiation_model.f90 @ 1806

Last change on this file since 1806 was 1789, checked in by maronga, 9 years ago
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[1682]	1	!> @file radiation_model.f90
[1496]	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	!
[1585]	16	! Copyright 1997-2015 Leibniz Universitaet Hannover
[1496]	17	!--------------------------------------------------------------------------------!
	18	!
	19	! Current revisions:
	20	! -----------------
[1789]	21	!
	22	!
[1496]	23	! Former revisions:
	24	! -----------------
	25	! $Id: radiation_model.f90 1789 2016-03-10 11:02:40Z gronemeier $
	26	!
[1789]	27	! 1788 2016-03-10 11:01:04Z maronga
	28	! Added new albedo class for pavements / roads.
	29	!
[1784]	30	! 1783 2016-03-06 18:36:17Z raasch
	31	! palm-netcdf-module removed in order to avoid a circular module dependency,
	32	! netcdf-variables moved to netcdf-module, new routine netcdf_handle_error_rad
	33	! added
	34	!
[1758]	35	! 1757 2016-02-22 15:49:32Z maronga
	36	! Added parameter unscheduled_radiation_calls. Bugfix: interpolation of sounding
	37	! profiles for pressure and temperature above the LES domain.
	38	!
[1710]	39	! 1709 2015-11-04 14:47:01Z maronga
	40	! Bugfix: set initial value for rrtm_lwuflx_dt to zero, small formatting
	41	! corrections
	42	!
[1702]	43	! 1701 2015-11-02 07:43:04Z maronga
	44	! Bugfixes: wrong index for output of timeseries, setting of nz_snd_end
	45	!
[1692]	46	! 1691 2015-10-26 16:17:44Z maronga
	47	! Added option for spin-up runs without radiation (skip_time_do_radiation). Bugfix
	48	! in calculation of pressure profiles. Bugfix in calculation of trace gas profiles.
	49	! Added output of radiative heating rates.
	50	!
[1683]	51	! 1682 2015-10-07 23:56:08Z knoop
	52	! Code annotations made doxygen readable
	53	!
[1607]	54	! 1606 2015-06-29 10:43:37Z maronga
	55	! Added preprocessor directive __netcdf to allow for compiling without netCDF.
	56	! Note, however, that RRTMG cannot be used without netCDF.
	57	!
[1591]	58	! 1590 2015-05-08 13:56:27Z maronga
	59	! Bugfix: definition of character strings requires same length for all elements
	60	!
[1588]	61	! 1587 2015-05-04 14:19:01Z maronga
	62	! Added albedo class for snow
	63	!
[1586]	64	! 1585 2015-04-30 07:05:52Z maronga
	65	! Added support for RRTMG
	66	!
[1572]	67	! 1571 2015-03-12 16:12:49Z maronga
	68	! Added missing KIND attribute. Removed upper-case variable names
	69	!
[1552]	70	! 1551 2015-03-03 14:18:16Z maronga
	71	! Added support for data output. Various variables have been renamed. Added
	72	! interface for different radiation schemes (currently: clear-sky, constant, and
	73	! RRTM (not yet implemented).
	74	!
[1497]	75	! 1496 2014-12-02 17:25:50Z maronga
	76	! Initial revision
	77	!
[1496]	78	!
	79	! Description:
	80	! ------------
[1682]	81	!> Radiation models and interfaces
	82	!> @todo move variable definitions used in init_radiation only to the subroutine
	83	!> as they are no longer required after initialization.
	84	!> @todo Output of full column vertical profiles used in RRTMG
	85	!> @todo Output of other rrtm arrays (such as volume mixing ratios)
	86	!> @todo Adapt for use with topography
	87	!>
	88	!> @note Many variables have a leading dummy dimension (0:0) in order to
	89	!> match the assume-size shape expected by the RRTMG model.
[1496]	90	!------------------------------------------------------------------------------!
[1682]	91	MODULE radiation_model_mod
	92
[1496]	93	USE arrays_3d, &
[1691]	94	ONLY: dzw, hyp, pt, q, ql, zw
[1496]	95
[1585]	96	USE cloud_parameters, &
[1691]	97	ONLY: cp, l_d_cp, nc_const, rho_l, sigma_gc
[1585]	98
	99	USE constants, &
	100	ONLY: pi
	101
[1496]	102	USE control_parameters, &
[1585]	103	ONLY: cloud_droplets, cloud_physics, g, initializing_actions, &
[1691]	104	large_scale_forcing, lsf_surf, phi, pt_surface, rho_surface, &
[1585]	105	surface_pressure, time_since_reference_point
[1496]	106
	107	USE indices, &
[1585]	108	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb_s_inner, nzb, nzt
[1496]	109
	110	USE kinds
	111
[1606]	112	#if defined ( __netcdf )
[1783]	113	USE NETCDF
[1606]	114	#endif
[1585]	115
	116	#if defined ( __rrtmg )
[1788]	117
	118	! USE netcdf_interface, &
	119	! ONLY: nc_stat, netcdf_handle_error
	120
[1585]	121	USE parrrsw, &
	122	ONLY: naerec, nbndsw
[1551]	123
[1585]	124	USE parrrtm, &
	125	ONLY: nbndlw
	126
	127	USE rrtmg_lw_init, &
	128	ONLY: rrtmg_lw_ini
	129
	130	USE rrtmg_sw_init, &
	131	ONLY: rrtmg_sw_ini
	132
	133	USE rrtmg_lw_rad, &
	134	ONLY: rrtmg_lw
	135
	136	USE rrtmg_sw_rad, &
	137	ONLY: rrtmg_sw
	138	#endif
	139
	140
	141
[1496]	142	IMPLICIT NONE
	143
[1585]	144	CHARACTER(10) :: radiation_scheme = 'clear-sky' ! 'constant', 'clear-sky', or 'rrtmg'
[1551]	145
[1585]	146	!
	147	!-- Predefined Land surface classes (albedo_type) after Briegleb (1992)
[1788]	148	CHARACTER(37), DIMENSION(0:17), PARAMETER :: albedo_type_name = (/ &
[1590]	149	'user defined ', & ! 0
	150	'ocean ', & ! 1
	151	'mixed farming, tall grassland ', & ! 2
	152	'tall/medium grassland ', & ! 3
	153	'evergreen shrubland ', & ! 4
	154	'short grassland/meadow/shrubland ', & ! 5
	155	'evergreen needleleaf forest ', & ! 6
	156	'mixed deciduous evergreen forest ', & ! 7
	157	'deciduous forest ', & ! 8
	158	'tropical evergreen broadleaved forest', & ! 9
	159	'medium/tall grassland/woodland ', & ! 10
	160	'desert, sandy ', & ! 11
	161	'desert, rocky ', & ! 12
	162	'tundra ', & ! 13
	163	'land ice ', & ! 14
	164	'sea ice ', & ! 15
[1788]	165	'snow ', & ! 16
	166	'pavement/roads ' & ! 17
[1585]	167	/)
[1496]	168
[1682]	169	INTEGER(iwp) :: albedo_type = 5, & !< Albedo surface type (default: short grassland)
	170	day, & !< current day of the year
	171	day_init = 172, & !< day of the year at model start (21/06)
	172	dots_rad = 0 !< starting index for timeseries output
[1496]	173
[1757]	174	LOGICAL :: unscheduled_radiation_calls = .TRUE., & !< flag parameter indicating whether additional calls of the radiation code are allowed
	175	constant_albedo = .FALSE., & !< flag parameter indicating whether the albedo may change depending on zenith
	176	force_radiation_call = .FALSE., & !< flag parameter for unscheduled radiation calls
	177	lw_radiation = .TRUE., & !< flag parameter indicating whether longwave radiation shall be calculated
	178	radiation = .FALSE., & !< flag parameter indicating whether the radiation model is used
	179	sun_up = .TRUE., & !< flag parameter indicating whether the sun is up or down
	180	sw_radiation = .TRUE. !< flag parameter indicing whether shortwave radiation shall be calculated
[1585]	181
[1496]	182
[1691]	183	REAL(wp), PARAMETER :: d_seconds_hour = 0.000277777777778_wp, & !< inverse of seconds per hour (1/3600)
	184	d_hours_day = 0.0416666666667_wp, & !< inverse of hours per day (1/24)
	185	sigma_sb = 5.67037321E-8_wp, & !< Stefan-Boltzmann constant
	186	solar_constant = 1368.0_wp !< solar constant at top of atmosphere
[1585]	187
[1691]	188	REAL(wp) :: albedo = 9999999.9_wp, & !< NAMELIST alpha
	189	albedo_lw_dif = 9999999.9_wp, & !< NAMELIST aldif
	190	albedo_lw_dir = 9999999.9_wp, & !< NAMELIST aldir
	191	albedo_sw_dif = 9999999.9_wp, & !< NAMELIST asdif
	192	albedo_sw_dir = 9999999.9_wp, & !< NAMELIST asdir
	193	decl_1, & !< declination coef. 1
	194	decl_2, & !< declination coef. 2
	195	decl_3, & !< declination coef. 3
	196	dt_radiation = 0.0_wp, & !< radiation model timestep
	197	emissivity = 0.98_wp, & !< NAMELIST surface emissivity
	198	lambda = 0.0_wp, & !< longitude in degrees
	199	lon = 0.0_wp, & !< longitude in radians
	200	lat = 0.0_wp, & !< latitude in radians
	201	net_radiation = 0.0_wp, & !< net radiation at surface
	202	skip_time_do_radiation = 0.0_wp, & !< Radiation model is not called before this time
	203	sky_trans, & !< sky transmissivity
	204	time_radiation = 0.0_wp, & !< time since last call of radiation code
	205	time_utc, & !< current time in UTC
	206	time_utc_init = 43200.0_wp !< UTC time at model start (noon)
	207
[1682]	208	REAL(wp), DIMENSION(0:0) :: zenith !< solar zenith angle
[1585]	209
[1496]	210	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: &
[1682]	211	alpha, & !< surface broadband albedo (used for clear-sky scheme)
[1709]	212	rad_lw_out_change_0, & !< change in LW out due to change in surface temperature
[1682]	213	rad_net, & !< net radiation at the surface
	214	rad_net_av !< average of rad_net
[1496]	215
[1585]	216	!
	217	!-- Land surface albedos for solar zenith angle of 60Â° after Briegleb (1992)
	218	!-- (shortwave, longwave, broadband): sw, lw, bb,
[1788]	219	REAL(wp), DIMENSION(0:2,1:17), PARAMETER :: albedo_pars = RESHAPE( (/&
[1585]	220	0.06_wp, 0.06_wp, 0.06_wp, & ! 1
	221	0.09_wp, 0.28_wp, 0.19_wp, & ! 2
	222	0.11_wp, 0.33_wp, 0.23_wp, & ! 3
	223	0.11_wp, 0.33_wp, 0.23_wp, & ! 4
	224	0.14_wp, 0.34_wp, 0.25_wp, & ! 5
	225	0.06_wp, 0.22_wp, 0.14_wp, & ! 6
	226	0.06_wp, 0.27_wp, 0.17_wp, & ! 7
	227	0.06_wp, 0.31_wp, 0.19_wp, & ! 8
	228	0.06_wp, 0.22_wp, 0.14_wp, & ! 9
	229	0.06_wp, 0.28_wp, 0.18_wp, & ! 10
	230	0.35_wp, 0.51_wp, 0.43_wp, & ! 11
	231	0.24_wp, 0.40_wp, 0.32_wp, & ! 12
	232	0.10_wp, 0.27_wp, 0.19_wp, & ! 13
	233	0.90_wp, 0.65_wp, 0.77_wp, & ! 14
[1587]	234	0.90_wp, 0.65_wp, 0.77_wp, & ! 15
[1788]	235	0.95_wp, 0.70_wp, 0.82_wp, & ! 16
	236	0.08_wp, 0.08_wp, 0.08_wp & ! 17
	237	/), (/ 3, 17 /) )
[1496]	238
[1585]	239	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE, TARGET :: &
[1691]	240	rad_lw_cs_hr, & !< longwave clear sky radiation heating rate (K/s)
	241	rad_lw_cs_hr_av, & !< average of rad_lw_cs_hr
	242	rad_lw_hr, & !< longwave radiation heating rate (K/s)
	243	rad_lw_hr_av, & !< average of rad_sw_hr
	244	rad_lw_in, & !< incoming longwave radiation (W/m2)
	245	rad_lw_in_av, & !< average of rad_lw_in
	246	rad_lw_out, & !< outgoing longwave radiation (W/m2)
	247	rad_lw_out_av, & !< average of rad_lw_out
	248	rad_sw_cs_hr, & !< shortwave clear sky radiation heating rate (K/s)
	249	rad_sw_cs_hr_av, & !< average of rad_sw_cs_hr
	250	rad_sw_hr, & !< shortwave radiation heating rate (K/s)
	251	rad_sw_hr_av, & !< average of rad_sw_hr
[1682]	252	rad_sw_in, & !< incoming shortwave radiation (W/m2)
	253	rad_sw_in_av, & !< average of rad_sw_in
	254	rad_sw_out, & !< outgoing shortwave radiation (W/m2)
[1691]	255	rad_sw_out_av !< average of rad_sw_out
[1585]	256
[1691]	257
[1585]	258	!
	259	!-- Variables and parameters used in RRTMG only
	260	#if defined ( __rrtmg )
[1682]	261	CHARACTER(LEN=12) :: rrtm_input_file = "RAD_SND_DATA" !< name of the NetCDF input file (sounding data)
[1585]	262
	263
	264	!
	265	!-- Flag parameters for RRTMGS (should not be changed)
[1682]	266	INTEGER(iwp), PARAMETER :: rrtm_inflglw = 2, & !< flag for lw cloud optical properties (0,1,2)
	267	rrtm_iceflglw = 0, & !< flag for lw ice particle specifications (0,1,2,3)
	268	rrtm_liqflglw = 1, & !< flag for lw liquid droplet specifications
	269	rrtm_inflgsw = 2, & !< flag for sw cloud optical properties (0,1,2)
	270	rrtm_iceflgsw = 0, & !< flag for sw ice particle specifications (0,1,2,3)
	271	rrtm_liqflgsw = 1 !< flag for sw liquid droplet specifications
[1585]	272
	273	!
	274	!-- The following variables should be only changed with care, as this will
	275	!-- require further setting of some variables, which is currently not
	276	!-- implemented (aerosols, ice phase).
[1682]	277	INTEGER(iwp) :: nzt_rad, & !< upper vertical limit for radiation calculations
	278	rrtm_icld = 0, & !< cloud flag (0: clear sky column, 1: cloudy column)
	279	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)
[1691]	280	rrtm_idrv = 1 !< longwave upward flux calculation option (0,1)
[1585]	281
[1788]	282	INTEGER(iwp) :: nc_stat !< local variable for storin the result of netCDF calls for error message handling
	283
[1682]	284	LOGICAL :: snd_exists = .FALSE. !< flag parameter to check whether a user-defined input files exists
[1585]	285
[1691]	286	REAL(wp), PARAMETER :: mol_mass_air_d_wv = 1.607793_wp !< molecular weight dry air / water vapor
[1585]	287
[1682]	288	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd, & !< hypostatic pressure from sounding data (hPa)
	289	q_snd, & !< specific humidity from sounding data (kg/kg) - dummy at the moment
	290	rrtm_tsfc, & !< dummy array for storing surface temperature
	291	t_snd !< actual temperature from sounding data (hPa)
[1585]	292
[1691]	293	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: aldif, & !< longwave diffuse albedo solar angle of 60Â°
	294	aldir, & !< longwave direct albedo solar angle of 60Â°
	295	asdif, & !< shortwave diffuse albedo solar angle of 60Â°
	296	asdir, & !< shortwave direct albedo solar angle of 60Â°
	297	rrtm_ccl4vmr, & !< CCL4 volume mixing ratio (g/mol)
	298	rrtm_cfc11vmr, & !< CFC11 volume mixing ratio (g/mol)
	299	rrtm_cfc12vmr, & !< CFC12 volume mixing ratio (g/mol)
	300	rrtm_cfc22vmr, & !< CFC22 volume mixing ratio (g/mol)
	301	rrtm_ch4vmr, & !< CH4 volume mixing ratio
	302	rrtm_cicewp, & !< in-cloud ice water path (g/mÂ²)
	303	rrtm_cldfr, & !< cloud fraction (0,1)
	304	rrtm_cliqwp, & !< in-cloud liquid water path (g/mÂ²)
	305	rrtm_co2vmr, & !< CO2 volume mixing ratio (g/mol)
	306	rrtm_emis, & !< surface emissivity (0-1)
	307	rrtm_h2ovmr, & !< H2O volume mixing ratio
	308	rrtm_n2ovmr, & !< N2O volume mixing ratio
	309	rrtm_o2vmr, & !< O2 volume mixing ratio
	310	rrtm_o3vmr, & !< O3 volume mixing ratio
	311	rrtm_play, & !< pressure layers (hPa, zu-grid)
	312	rrtm_plev, & !< pressure layers (hPa, zw-grid)
	313	rrtm_reice, & !< cloud ice effective radius (microns)
	314	rrtm_reliq, & !< cloud water drop effective radius (microns)
	315	rrtm_tlay, & !< actual temperature (K, zu-grid)
	316	rrtm_tlev, & !< actual temperature (K, zw-grid)
	317	rrtm_lwdflx, & !< RRTM output of incoming longwave radiation flux (W/m2)
	318	rrtm_lwdflxc, & !< RRTM output of outgoing clear sky longwave radiation flux (W/m2)
	319	rrtm_lwuflx, & !< RRTM output of outgoing longwave radiation flux (W/m2)
	320	rrtm_lwuflxc, & !< RRTM output of incoming clear sky longwave radiation flux (W/m2)
	321	rrtm_lwuflx_dt, & !< RRTM output of incoming clear sky longwave radiation flux (W/m2)
	322	rrtm_lwuflxc_dt,& !< RRTM output of outgoing clear sky longwave radiation flux (W/m2)
	323	rrtm_lwhr, & !< RRTM output of longwave radiation heating rate (K/d)
	324	rrtm_lwhrc, & !< RRTM output of incoming longwave clear sky radiation heating rate (K/d)
	325	rrtm_swdflx, & !< RRTM output of incoming shortwave radiation flux (W/m2)
	326	rrtm_swdflxc, & !< RRTM output of outgoing clear sky shortwave radiation flux (W/m2)
	327	rrtm_swuflx, & !< RRTM output of outgoing shortwave radiation flux (W/m2)
	328	rrtm_swuflxc, & !< RRTM output of incoming clear sky shortwave radiation flux (W/m2)
	329	rrtm_swhr, & !< RRTM output of shortwave radiation heating rate (K/d)
	330	rrtm_swhrc !< RRTM output of incoming shortwave clear sky radiation heating rate (K/d)
[1585]	331
	332	!
	333	!-- Definition of arrays that are currently not used for calling RRTMG (due to setting of flag parameters)
[1682]	334	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rad_lw_cs_in, & !< incoming clear sky longwave radiation (W/m2) (not used)
	335	rad_lw_cs_out, & !< outgoing clear sky longwave radiation (W/m2) (not used)
	336	rad_sw_cs_in, & !< incoming clear sky shortwave radiation (W/m2) (not used)
	337	rad_sw_cs_out, & !< outgoing clear sky shortwave radiation (W/m2) (not used)
	338	rrtm_aldif, & !< surface albedo for longwave diffuse radiation
	339	rrtm_aldir, & !< surface albedo for longwave direct radiation
	340	rrtm_asdif, & !< surface albedo for shortwave diffuse radiation
	341	rrtm_asdir, & !< surface albedo for shortwave direct radiation
	342	rrtm_lw_tauaer, & !< lw aerosol optical depth
	343	rrtm_lw_taucld, & !< lw in-cloud optical depth
	344	rrtm_sw_taucld, & !< sw in-cloud optical depth
	345	rrtm_sw_ssacld, & !< sw in-cloud single scattering albedo
	346	rrtm_sw_asmcld, & !< sw in-cloud asymmetry parameter
	347	rrtm_sw_fsfcld, & !< sw in-cloud forward scattering fraction
	348	rrtm_sw_tauaer, & !< sw aerosol optical depth
	349	rrtm_sw_ssaaer, & !< sw aerosol single scattering albedo
	350	rrtm_sw_asmaer, & !< sw aerosol asymmetry parameter
	351	rrtm_sw_ecaer !< sw aerosol optical detph at 0.55 microns (rrtm_iaer = 6 only)
[1691]	352
[1585]	353	#endif
	354
[1496]	355	INTERFACE init_radiation
	356	MODULE PROCEDURE init_radiation
	357	END INTERFACE init_radiation
	358
[1551]	359	INTERFACE radiation_clearsky
	360	MODULE PROCEDURE radiation_clearsky
	361	END INTERFACE radiation_clearsky
[1496]	362
[1585]	363	INTERFACE radiation_rrtmg
	364	MODULE PROCEDURE radiation_rrtmg
	365	END INTERFACE radiation_rrtmg
[1551]	366
[1585]	367	INTERFACE radiation_tendency
	368	MODULE PROCEDURE radiation_tendency
	369	MODULE PROCEDURE radiation_tendency_ij
	370	END INTERFACE radiation_tendency
[1551]	371
[1496]	372	SAVE
	373
	374	PRIVATE
	375
[1585]	376	PUBLIC albedo, albedo_type, albedo_type_name, albedo_lw_dif, albedo_lw_dir,&
	377	albedo_sw_dif, albedo_sw_dir, constant_albedo, day_init, dots_rad, &
[1691]	378	dt_radiation, emissivity, force_radiation_call, init_radiation, &
	379	lambda, lw_radiation, net_radiation, rad_net, rad_net_av, radiation,&
	380	radiation_clearsky, radiation_rrtmg, radiation_scheme, &
	381	radiation_tendency, rad_lw_in, rad_lw_in_av, rad_lw_out, &
[1709]	382	rad_lw_out_av, rad_lw_out_change_0, rad_lw_cs_hr, rad_lw_cs_hr_av, &
	383	rad_lw_hr, rad_lw_hr_av, rad_sw_in, rad_sw_in_av, rad_sw_out, &
	384	rad_sw_out_av, rad_sw_cs_hr, rad_sw_cs_hr_av, rad_sw_hr, &
	385	rad_sw_hr_av, sigma_sb, skip_time_do_radiation, sw_radiation, &
[1757]	386	time_radiation, time_utc_init, unscheduled_radiation_calls
[1496]	387
[1691]	388
[1585]	389	#if defined ( __rrtmg )
[1709]	390	PUBLIC rrtm_aldif, rrtm_aldir, rrtm_asdif, rrtm_asdir, rrtm_idrv
[1585]	391	#endif
[1496]	392
	393	CONTAINS
	394
	395	!------------------------------------------------------------------------------!
	396	! Description:
	397	! ------------
[1682]	398	!> Initialization of the radiation model
[1496]	399	!------------------------------------------------------------------------------!
	400	SUBROUTINE init_radiation
	401
	402	IMPLICIT NONE
	403
[1585]	404	!
	405	!-- Allocate array for storing the surface net radiation
	406	IF ( .NOT. ALLOCATED ( rad_net ) ) THEN
	407	ALLOCATE ( rad_net(nysg:nyng,nxlg:nxrg) )
	408	rad_net = 0.0_wp
	409	ENDIF
[1496]	410
	411	!
[1709]	412	!-- Allocate array for storing the surface net radiation
	413	IF ( .NOT. ALLOCATED ( rad_lw_out_change_0 ) ) THEN
	414	ALLOCATE ( rad_lw_out_change_0(nysg:nyng,nxlg:nxrg) )
	415	rad_lw_out_change_0 = 0.0_wp
	416	ENDIF
	417
	418	!
[1551]	419	!-- Fix net radiation in case of radiation_scheme = 'constant'
[1585]	420	IF ( radiation_scheme == 'constant' ) THEN
[1551]	421	rad_net = net_radiation
[1585]	422	radiation = .FALSE.
[1551]	423	!
[1585]	424	!-- Calculate orbital constants
	425	ELSE
[1551]	426	decl_1 = SIN(23.45_wp * pi / 180.0_wp)
	427	decl_2 = 2.0_wp * pi / 365.0_wp
	428	decl_3 = decl_2 * 81.0_wp
[1585]	429	lat = phi * pi / 180.0_wp
	430	lon = lambda * pi / 180.0_wp
	431	ENDIF
	432
	433
	434	IF ( radiation_scheme == 'clear-sky' ) THEN
	435
	436	ALLOCATE ( alpha(nysg:nyng,nxlg:nxrg) )
	437
	438	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
	439	ALLOCATE ( rad_sw_in(0:0,nysg:nyng,nxlg:nxrg) )
	440	ENDIF
	441	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
	442	ALLOCATE ( rad_sw_out(0:0,nysg:nyng,nxlg:nxrg) )
	443	ENDIF
	444
	445	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
	446	ALLOCATE ( rad_sw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
	447	ENDIF
	448	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
	449	ALLOCATE ( rad_sw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
	450	ENDIF
	451
	452	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
	453	ALLOCATE ( rad_lw_in(0:0,nysg:nyng,nxlg:nxrg) )
	454	ENDIF
	455	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
	456	ALLOCATE ( rad_lw_out(0:0,nysg:nyng,nxlg:nxrg) )
	457	ENDIF
	458
	459	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
	460	ALLOCATE ( rad_lw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
	461	ENDIF
	462	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
	463	ALLOCATE ( rad_lw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
	464	ENDIF
	465
	466	rad_sw_in = 0.0_wp
	467	rad_sw_out = 0.0_wp
	468	rad_lw_in = 0.0_wp
	469	rad_lw_out = 0.0_wp
	470
[1496]	471	!
[1585]	472	!-- Overwrite albedo if manually set in parameter file
	473	IF ( albedo_type /= 0 .AND. albedo == 9999999.9_wp ) THEN
	474	albedo = albedo_pars(2,albedo_type)
	475	ENDIF
	476
	477	alpha = albedo
	478
	479	!
	480	!-- Initialization actions for RRTMG
	481	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	482	#if defined ( __rrtmg )
	483	!
	484	!-- Allocate albedos
	485	ALLOCATE ( rrtm_aldif(0:0,nysg:nyng,nxlg:nxrg) )
	486	ALLOCATE ( rrtm_aldir(0:0,nysg:nyng,nxlg:nxrg) )
	487	ALLOCATE ( rrtm_asdif(0:0,nysg:nyng,nxlg:nxrg) )
	488	ALLOCATE ( rrtm_asdir(0:0,nysg:nyng,nxlg:nxrg) )
	489	ALLOCATE ( aldif(nysg:nyng,nxlg:nxrg) )
	490	ALLOCATE ( aldir(nysg:nyng,nxlg:nxrg) )
	491	ALLOCATE ( asdif(nysg:nyng,nxlg:nxrg) )
	492	ALLOCATE ( asdir(nysg:nyng,nxlg:nxrg) )
	493
	494	IF ( albedo_type /= 0 ) THEN
	495	IF ( albedo_lw_dif == 9999999.9_wp ) THEN
	496	albedo_lw_dif = albedo_pars(0,albedo_type)
	497	albedo_lw_dir = albedo_lw_dif
	498	ENDIF
	499	IF ( albedo_sw_dif == 9999999.9_wp ) THEN
	500	albedo_sw_dif = albedo_pars(1,albedo_type)
	501	albedo_sw_dir = albedo_sw_dif
	502	ENDIF
	503	ENDIF
	504
	505	aldif(:,:) = albedo_lw_dif
	506	aldir(:,:) = albedo_lw_dir
	507	asdif(:,:) = albedo_sw_dif
	508	asdir(:,:) = albedo_sw_dir
	509	!
	510	!-- Calculate initial values of current (cosine of) the zenith angle and
	511	!-- whether the sun is up
	512	CALL calc_zenith
	513	!
	514	!-- Calculate initial surface albedo
	515	IF ( .NOT. constant_albedo ) THEN
	516	CALL calc_albedo
	517	ELSE
	518	rrtm_aldif(0,:,:) = aldif(:,:)
	519	rrtm_aldir(0,:,:) = aldir(:,:)
	520	rrtm_asdif(0,:,:) = asdif(:,:)
	521	rrtm_asdir(0,:,:) = asdir(:,:)
	522	ENDIF
	523
	524	!
	525	!-- Allocate surface emissivity
	526	ALLOCATE ( rrtm_emis(0:0,1:nbndlw+1) )
	527	rrtm_emis = emissivity
	528
	529	!
	530	!-- Allocate 3d arrays of radiative fluxes and heating rates
	531	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
	532	ALLOCATE ( rad_sw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	533	rad_sw_in = 0.0_wp
	534	ENDIF
	535
	536	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
	537	ALLOCATE ( rad_sw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	538	ENDIF
	539
	540	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
	541	ALLOCATE ( rad_sw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1691]	542	rad_sw_out = 0.0_wp
[1585]	543	ENDIF
	544
	545	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
	546	ALLOCATE ( rad_sw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	547	ENDIF
	548
[1691]	549	IF ( .NOT. ALLOCATED ( rad_sw_hr ) ) THEN
	550	ALLOCATE ( rad_sw_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	551	rad_sw_hr = 0.0_wp
	552	ENDIF
[1585]	553
[1691]	554	IF ( .NOT. ALLOCATED ( rad_sw_hr_av ) ) THEN
	555	ALLOCATE ( rad_sw_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	556	rad_sw_hr_av = 0.0_wp
	557	ENDIF
	558
	559	IF ( .NOT. ALLOCATED ( rad_sw_cs_hr ) ) THEN
	560	ALLOCATE ( rad_sw_cs_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	561	rad_sw_cs_hr = 0.0_wp
	562	ENDIF
	563
	564	IF ( .NOT. ALLOCATED ( rad_sw_cs_hr_av ) ) THEN
	565	ALLOCATE ( rad_sw_cs_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	566	rad_sw_cs_hr_av = 0.0_wp
	567	ENDIF
	568
[1585]	569	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
	570	ALLOCATE ( rad_lw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	571	rad_lw_in = 0.0_wp
	572	ENDIF
	573
	574	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
	575	ALLOCATE ( rad_lw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	576	ENDIF
	577
	578	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
	579	ALLOCATE ( rad_lw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	580	rad_lw_out = 0.0_wp
	581	ENDIF
	582
	583	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
	584	ALLOCATE ( rad_lw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	585	ENDIF
	586
[1691]	587	IF ( .NOT. ALLOCATED ( rad_lw_hr ) ) THEN
	588	ALLOCATE ( rad_lw_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	589	rad_lw_hr = 0.0_wp
	590	ENDIF
	591
	592	IF ( .NOT. ALLOCATED ( rad_lw_hr_av ) ) THEN
	593	ALLOCATE ( rad_lw_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	594	rad_lw_hr_av = 0.0_wp
	595	ENDIF
	596
	597	IF ( .NOT. ALLOCATED ( rad_lw_cs_hr ) ) THEN
	598	ALLOCATE ( rad_lw_cs_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	599	rad_lw_cs_hr = 0.0_wp
	600	ENDIF
	601
	602	IF ( .NOT. ALLOCATED ( rad_lw_cs_hr_av ) ) THEN
	603	ALLOCATE ( rad_lw_cs_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	604	rad_lw_cs_hr_av = 0.0_wp
	605	ENDIF
	606
	607	ALLOCATE ( rad_sw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	608	ALLOCATE ( rad_sw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1585]	609	rad_sw_cs_in = 0.0_wp
	610	rad_sw_cs_out = 0.0_wp
	611
[1691]	612	ALLOCATE ( rad_lw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	613	ALLOCATE ( rad_lw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1585]	614	rad_lw_cs_in = 0.0_wp
	615	rad_lw_cs_out = 0.0_wp
	616
	617	!
	618	!-- Allocate dummy array for storing surface temperature
	619	ALLOCATE ( rrtm_tsfc(1) )
	620
	621	!
	622	!-- Initialize RRTMG
	623	IF ( lw_radiation ) CALL rrtmg_lw_ini ( cp )
	624	IF ( sw_radiation ) CALL rrtmg_sw_ini ( cp )
	625
	626	!
	627	!-- Set input files for RRTMG
	628	INQUIRE(FILE="RAD_SND_DATA", EXIST=snd_exists)
	629	IF ( .NOT. snd_exists ) THEN
	630	rrtm_input_file = "rrtmg_lw.nc"
	631	ENDIF
	632
	633	!
	634	!-- Read vertical layers for RRTMG from sounding data
	635	!-- The routine provides nzt_rad, hyp_snd(1:nzt_rad),
	636	!-- t_snd(nzt+2:nzt_rad), rrtm_play(1:nzt_rad), rrtm_plev(1_nzt_rad+1),
	637	!-- rrtm_tlay(nzt+2:nzt_rad), rrtm_tlev(nzt+2:nzt_rad+1)
	638	CALL read_sounding_data
	639
	640	!
	641	!-- Read trace gas profiles from file. This routine provides
	642	!-- the rrtm_ arrays (1:nzt_rad+1)
	643	CALL read_trace_gas_data
	644	#endif
[1551]	645	ENDIF
[1585]	646
[1551]	647	!
[1585]	648	!-- Perform user actions if required
	649	CALL user_init_radiation
	650
	651	!
	652	!-- Calculate radiative fluxes at model start
	653	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	654	IF ( radiation_scheme == 'clear-sky' ) THEN
[1709]	655	CALL radiation_clearsky
[1585]	656	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	657	CALL radiation_rrtmg
	658	ENDIF
	659	ENDIF
	660
[1496]	661	RETURN
	662
	663	END SUBROUTINE init_radiation
	664
	665
	666	!------------------------------------------------------------------------------!
	667	! Description:
	668	! ------------
[1682]	669	!> A simple clear sky radiation model
[1496]	670	!------------------------------------------------------------------------------!
[1551]	671	SUBROUTINE radiation_clearsky
[1496]	672
[1585]	673	USE indices, &
	674	ONLY: nbgp
	675
[1496]	676	IMPLICIT NONE
	677
[1691]	678	INTEGER(iwp) :: i, j, k !< loop indices
	679	REAL(wp) :: exn, & !< Exner functions at surface
[1709]	680	exn1, & !< Exner functions at first grid level
	681	pt1 !< potential temperature at first grid level
[1585]	682
[1496]	683	!
[1585]	684	!-- Calculate current zenith angle
	685	CALL calc_zenith
	686
	687	!
	688	!-- Calculate sky transmissivity
	689	sky_trans = 0.6_wp + 0.2_wp * zenith(0)
	690
	691	!
	692	!-- Calculate value of the Exner function
	693	exn = (surface_pressure / 1000.0_wp )**0.286_wp
	694	!
	695	!-- Calculate radiation fluxes and net radiation (rad_net) for each grid
	696	!-- point
[1709]	697	DO i = nxlg, nxrg
	698	DO j = nysg, nyng
[1585]	699	k = nzb_s_inner(j,i)
[1691]	700
[1709]	701	exn1 = (hyp(k+1) / 100000.0_wp )**0.286_wp
[1691]	702
[1585]	703	rad_sw_in(0,j,i) = solar_constant * sky_trans * zenith(0)
	704	rad_sw_out(0,j,i) = alpha(j,i) * rad_sw_in(0,j,i)
[1691]	705	rad_lw_out(0,j,i) = emissivity * sigma_sb * (pt(k,j,i) * exn)**4
[1585]	706
[1691]	707	IF ( cloud_physics ) THEN
[1709]	708	pt1 = pt(k+1,j,i) + l_d_cp / exn1 * ql(k+1,j,i)
	709	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt1 * exn1)**4
[1691]	710	ELSE
[1709]	711	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt(k+1,j,i) * exn1)**4
[1691]	712	ENDIF
	713
	714	rad_net(j,i) = rad_sw_in(0,j,i) - rad_sw_out(0,j,i) &
	715	+ rad_lw_in(0,j,i) - rad_lw_out(0,j,i)
	716
[1585]	717	ENDDO
	718	ENDDO
	719
	720	END SUBROUTINE radiation_clearsky
	721
	722
	723	!------------------------------------------------------------------------------!
	724	! Description:
	725	! ------------
[1682]	726	!> Implementation of the RRTMG radiation_scheme
[1585]	727	!------------------------------------------------------------------------------!
	728	SUBROUTINE radiation_rrtmg
	729
	730	USE indices, &
	731	ONLY: nbgp
	732
	733	USE particle_attributes, &
	734	ONLY: grid_particles, number_of_particles, particles, &
	735	particle_advection_start, prt_count
	736
	737	IMPLICIT NONE
	738
	739	#if defined ( __rrtmg )
	740
[1691]	741	INTEGER(iwp) :: i, j, k, n !< loop indices
[1585]	742
[1691]	743	REAL(wp) :: s_r2, & !< weighted sum over all droplets with r^2
	744	s_r3 !< weighted sum over all droplets with r^3
[1585]	745
	746	!
	747	!-- Calculate current (cosine of) zenith angle and whether the sun is up
	748	CALL calc_zenith
	749	!
	750	!-- Calculate surface albedo
	751	IF ( .NOT. constant_albedo ) THEN
	752	CALL calc_albedo
	753	ENDIF
	754
	755	!
	756	!-- Prepare input data for RRTMG
	757
	758	!
	759	!-- In case of large scale forcing with surface data, calculate new pressure
	760	!-- profile. nzt_rad might be modified by these calls and all required arrays
	761	!-- will then be re-allocated
[1691]	762	IF ( large_scale_forcing .AND. lsf_surf ) THEN
[1585]	763	CALL read_sounding_data
	764	CALL read_trace_gas_data
	765	ENDIF
	766	!
	767	!-- Loop over all grid points
	768	DO i = nxl, nxr
	769	DO j = nys, nyn
	770
	771	!
	772	!-- Prepare profiles of temperature and H2O volume mixing ratio
[1691]	773	rrtm_tlev(0,nzb+1) = pt(nzb,j,i) * ( surface_pressure &
	774	/ 1000.0_wp )**0.286_wp
[1585]	775
	776	DO k = nzb+1, nzt+1
	777	rrtm_tlay(0,k) = pt(k,j,i) * ( (hyp(k) ) / 100000.0_wp &
[1691]	778	)*0.286_wp + l_d_cp ql(k,j,i)
	779	rrtm_h2ovmr(0,k) = mol_mass_air_d_wv * (q(k,j,i) - ql(k,j,i))
[1585]	780
	781	ENDDO
	782
	783	!
	784	!-- Avoid temperature/humidity jumps at the top of the LES domain by
	785	!-- linear interpolation from nzt+2 to nzt+7
	786	DO k = nzt+2, nzt+7
	787	rrtm_tlay(0,k) = rrtm_tlay(0,nzt+1) &
	788	+ ( rrtm_tlay(0,nzt+8) - rrtm_tlay(0,nzt+1) ) &
	789	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) ) &
	790	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
	791
	792	rrtm_h2ovmr(0,k) = rrtm_h2ovmr(0,nzt+1) &
	793	+ ( rrtm_h2ovmr(0,nzt+8) - rrtm_h2ovmr(0,nzt+1) )&
	794	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) )&
	795	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
	796
	797	ENDDO
	798
	799	!-- Linear interpolate to zw grid
	800	DO k = nzb+2, nzt+8
	801	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) - &
	802	rrtm_tlay(0,k-1)) &
	803	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
	804	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
	805	ENDDO
	806
	807
	808	!
	809	!-- Calculate liquid water path and cloud fraction for each column.
	810	!-- Note that LWP is required in g/mÂ² instead of kg/kg m.
	811	rrtm_cldfr = 0.0_wp
	812	rrtm_reliq = 0.0_wp
	813	rrtm_cliqwp = 0.0_wp
[1691]	814	rrtm_icld = 0
[1585]	815
	816	DO k = nzb+1, nzt+1
[1691]	817	rrtm_cliqwp(0,k) = ql(k,j,i) * 1000.0_wp * &
	818	(rrtm_plev(0,k) - rrtm_plev(0,k+1)) &
	819	* 100.0_wp / g
[1585]	820
[1691]	821	IF ( rrtm_cliqwp(0,k) > 0.0_wp ) THEN
[1585]	822	rrtm_cldfr(0,k) = 1.0_wp
[1691]	823	IF ( rrtm_icld == 0 ) rrtm_icld = 1
[1585]	824
	825	!
	826	!-- Calculate cloud droplet effective radius
	827	IF ( cloud_physics ) THEN
[1691]	828	rrtm_reliq(0,k) = 1.0E6_wp * ( 3.0_wp * ql(k,j,i) &
	829	* rho_surface &
	830	/ ( 4.0_wp * pi * nc_const * rho_l ) &
	831	)**0.33333333333333_wp &
	832	* EXP( LOG( sigma_gc )**2 )
[1585]	833
	834	ELSEIF ( cloud_droplets ) THEN
	835	number_of_particles = prt_count(k,j,i)
	836
	837	IF (number_of_particles <= 0) CYCLE
	838	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	839	s_r2 = 0.0_wp
	840	s_r3 = 0.0_wp
	841
	842	DO n = 1, number_of_particles
	843	IF ( particles(n)%particle_mask ) THEN
	844	s_r2 = s_r2 + particles(n)%radius*2 &
	845	particles(n)%weight_factor
	846	s_r3 = s_r3 + particles(n)%radius*3 &
	847	particles(n)%weight_factor
	848	ENDIF
	849	ENDDO
	850
	851	IF ( s_r2 > 0.0_wp ) rrtm_reliq(0,k) = s_r3 / s_r2
	852
	853	ENDIF
	854
	855	!
	856	!-- Limit effective radius
[1691]	857	IF ( rrtm_reliq(0,k) > 0.0_wp ) THEN
[1585]	858	rrtm_reliq(0,k) = MAX(rrtm_reliq(0,k),2.5_wp)
	859	rrtm_reliq(0,k) = MIN(rrtm_reliq(0,k),60.0_wp)
	860	ENDIF
	861	ENDIF
	862	ENDDO
	863
	864	!
	865	!-- Set surface temperature
	866	rrtm_tsfc = pt(nzb,j,i) * (surface_pressure / 1000.0_wp )**0.286_wp
	867
	868	IF ( lw_radiation ) THEN
	869	CALL rrtmg_lw( 1, nzt_rad , rrtm_icld , rrtm_idrv ,&
	870	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
	871	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
	872	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_cfc11vmr ,&
	873	rrtm_cfc12vmr , rrtm_cfc22vmr, rrtm_ccl4vmr , rrtm_emis ,&
	874	rrtm_inflglw , rrtm_iceflglw, rrtm_liqflglw, rrtm_cldfr ,&
	875	rrtm_lw_taucld , rrtm_cicewp , rrtm_cliqwp , rrtm_reice ,&
	876	rrtm_reliq , rrtm_lw_tauaer, &
	877	rrtm_lwuflx , rrtm_lwdflx , rrtm_lwhr , &
[1691]	878	rrtm_lwuflxc , rrtm_lwdflxc , rrtm_lwhrc , &
	879	rrtm_lwuflx_dt , rrtm_lwuflxc_dt )
[1585]	880
[1691]	881	!
	882	!-- Save fluxes
[1585]	883	DO k = nzb, nzt+1
	884	rad_lw_in(k,j,i) = rrtm_lwdflx(0,k)
	885	rad_lw_out(k,j,i) = rrtm_lwuflx(0,k)
	886	ENDDO
	887
[1691]	888	!
	889	!-- Save heating rates (convert from K/d to K/h)
	890	DO k = nzb+1, nzt+1
	891	rad_lw_hr(k,j,i) = rrtm_lwhr(0,k) * d_hours_day
	892	rad_lw_cs_hr(k,j,i) = rrtm_lwhrc(0,k) * d_hours_day
	893	ENDDO
[1585]	894
[1709]	895	!
	896	!-- Save change in LW heating rate
	897	rad_lw_out_change_0(j,i) = rrtm_lwuflx_dt(0,nzb)
	898
[1585]	899	ENDIF
	900
	901	IF ( sw_radiation .AND. sun_up ) THEN
	902	CALL rrtmg_sw( 1, nzt_rad , rrtm_icld , rrtm_iaer ,&
	903	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
	904	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
	905	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_asdir(:,j,i),&
	906	rrtm_asdif(:,j,i), rrtm_aldir(:,j,i), rrtm_aldif(:,j,i), zenith,&
	907	0.0_wp , day , solar_constant, rrtm_inflgsw,&
	908	rrtm_iceflgsw , rrtm_liqflgsw, rrtm_cldfr , rrtm_sw_taucld ,&
	909	rrtm_sw_ssacld , rrtm_sw_asmcld, rrtm_sw_fsfcld, rrtm_cicewp ,&
	910	rrtm_cliqwp , rrtm_reice , rrtm_reliq , rrtm_sw_tauaer ,&
	911	rrtm_sw_ssaaer , rrtm_sw_asmaer , rrtm_sw_ecaer , &
	912	rrtm_swuflx , rrtm_swdflx , rrtm_swhr , &
	913	rrtm_swuflxc , rrtm_swdflxc , rrtm_swhrc )
	914
[1691]	915	!
	916	!-- Save fluxes
[1585]	917	DO k = nzb, nzt+1
	918	rad_sw_in(k,j,i) = rrtm_swdflx(0,k)
	919	rad_sw_out(k,j,i) = rrtm_swuflx(0,k)
	920	ENDDO
[1691]	921
	922	!
	923	!-- Save heating rates (convert from K/d to K/s)
	924	DO k = nzb+1, nzt+1
	925	rad_sw_hr(k,j,i) = rrtm_swhr(0,k) * d_hours_day
	926	rad_sw_cs_hr(k,j,i) = rrtm_swhrc(0,k) * d_hours_day
	927	ENDDO
	928
[1585]	929	ENDIF
	930
	931	!
	932	!-- Calculate surface net radiation
	933	rad_net(j,i) = rad_sw_in(nzb,j,i) - rad_sw_out(nzb,j,i) &
	934	+ rad_lw_in(nzb,j,i) - rad_lw_out(nzb,j,i)
	935
	936	ENDDO
	937	ENDDO
	938
	939	CALL exchange_horiz( rad_lw_in, nbgp )
	940	CALL exchange_horiz( rad_lw_out, nbgp )
[1691]	941	CALL exchange_horiz( rad_lw_hr, nbgp )
	942	CALL exchange_horiz( rad_lw_cs_hr, nbgp )
	943
[1585]	944	CALL exchange_horiz( rad_sw_in, nbgp )
	945	CALL exchange_horiz( rad_sw_out, nbgp )
[1691]	946	CALL exchange_horiz( rad_sw_hr, nbgp )
	947	CALL exchange_horiz( rad_sw_cs_hr, nbgp )
	948
[1585]	949	CALL exchange_horiz_2d( rad_net, nbgp )
[1709]	950	CALL exchange_horiz_2d( rad_lw_out_change_0, nbgp )
[1585]	951	#endif
	952
	953	END SUBROUTINE radiation_rrtmg
	954
	955
	956	!------------------------------------------------------------------------------!
	957	! Description:
	958	! ------------
[1682]	959	!> Calculate the cosine of the zenith angle (variable is called zenith)
[1585]	960	!------------------------------------------------------------------------------!
	961	SUBROUTINE calc_zenith
	962
	963	IMPLICIT NONE
	964
[1682]	965	REAL(wp) :: declination, & !< solar declination angle
	966	hour_angle !< solar hour angle
[1585]	967	!
[1496]	968	!-- Calculate current day and time based on the initial values and simulation
	969	!-- time
[1585]	970	day = day_init + INT(FLOOR( (time_utc_init + time_since_reference_point) &
	971	/ 86400.0_wp ), KIND=iwp)
[1496]	972	time_utc = MOD((time_utc_init + time_since_reference_point), 86400.0_wp)
	973
	974
	975	!
	976	!-- Calculate solar declination and hour angle
[1585]	977	declination = ASIN( decl_1 * SIN(decl_2 * REAL(day, KIND=wp) - decl_3) )
[1496]	978	hour_angle = 2.0_wp * pi * (time_utc / 86400.0_wp) + lon - pi
	979
	980	!
	981	!-- Calculate zenith angle
[1585]	982	zenith(0) = SIN(lat) * SIN(declination) + COS(lat) * COS(declination) &
[1496]	983	* COS(hour_angle)
[1585]	984	zenith(0) = MAX(0.0_wp,zenith(0))
[1496]	985
	986	!
[1585]	987	!-- Check if the sun is up (otheriwse shortwave calculations can be skipped)
[1691]	988	IF ( zenith(0) > 0.0_wp ) THEN
[1585]	989	sun_up = .TRUE.
	990	ELSE
	991	sun_up = .FALSE.
	992	END IF
[1496]	993
[1585]	994	END SUBROUTINE calc_zenith
	995
[1606]	996	#if defined ( __rrtmg ) && defined ( __netcdf )
[1585]	997	!------------------------------------------------------------------------------!
	998	! Description:
	999	! ------------
[1682]	1000	!> Calculates surface albedo components based on Briegleb (1992) and
	1001	!> Briegleb et al. (1986)
[1585]	1002	!------------------------------------------------------------------------------!
	1003	SUBROUTINE calc_albedo
	1004
	1005	IMPLICIT NONE
	1006
	1007	IF ( sun_up ) THEN
[1496]	1008	!
[1585]	1009	!-- Ocean
	1010	IF ( albedo_type == 1 ) THEN
	1011	rrtm_aldir(0,:,:) = 0.026_wp / ( zenith(0)**1.7_wp + 0.065_wp ) &
	1012	+ 0.15_wp * ( zenith(0) - 0.1_wp ) &
	1013	* ( zenith(0) - 0.5_wp ) &
	1014	* ( zenith(0) - 1.0_wp )
	1015	rrtm_asdir(0,:,:) = rrtm_aldir(0,:,:)
	1016	!
	1017	!-- Snow
	1018	ELSEIF ( albedo_type == 16 ) THEN
	1019	IF ( zenith(0) < 0.5_wp ) THEN
	1020	rrtm_aldir(0,:,:) = 0.5_wp * (1.0_wp - aldif) &
	1021	* ( 3.0_wp / (1.0_wp + 4.0_wp &
	1022	* zenith(0))) - 1.0_wp
	1023	rrtm_asdir(0,:,:) = 0.5_wp * (1.0_wp - asdif) &
	1024	* ( 3.0_wp / (1.0_wp + 4.0_wp &
	1025	* zenith(0))) - 1.0_wp
[1496]	1026
[1585]	1027	rrtm_aldir(0,:,:) = MIN(0.98_wp, rrtm_aldir(0,:,:))
	1028	rrtm_asdir(0,:,:) = MIN(0.98_wp, rrtm_asdir(0,:,:))
	1029	ELSE
	1030	rrtm_aldir(0,:,:) = aldif
	1031	rrtm_asdir(0,:,:) = asdif
	1032	ENDIF
[1496]	1033	!
[1585]	1034	!-- Sea ice
	1035	ELSEIF ( albedo_type == 15 ) THEN
	1036	rrtm_aldir(0,:,:) = aldif
	1037	rrtm_asdir(0,:,:) = asdif
[1788]	1038
[1585]	1039	!
[1788]	1040	!-- Asphalt
	1041	ELSEIF ( albedo_type == 17 ) THEN
	1042	rrtm_aldir(0,:,:) = aldif
	1043	rrtm_asdir(0,:,:) = asdif
	1044	!
[1585]	1045	!-- Land surfaces
	1046	ELSE
	1047	SELECT CASE ( albedo_type )
[1496]	1048
[1585]	1049	!
	1050	!-- Surface types with strong zenith dependence
	1051	CASE ( 1, 2, 3, 4, 11, 12, 13 )
	1052	rrtm_aldir(0,:,:) = aldif * 1.4_wp / &
	1053	(1.0_wp + 0.8_wp * zenith(0))
	1054	rrtm_asdir(0,:,:) = asdif * 1.4_wp / &
	1055	(1.0_wp + 0.8_wp * zenith(0))
	1056	!
	1057	!-- Surface types with weak zenith dependence
	1058	CASE ( 5, 6, 7, 8, 9, 10, 14 )
	1059	rrtm_aldir(0,:,:) = aldif * 1.1_wp / &
	1060	(1.0_wp + 0.2_wp * zenith(0))
	1061	rrtm_asdir(0,:,:) = asdif * 1.1_wp / &
	1062	(1.0_wp + 0.2_wp * zenith(0))
[1496]	1063
[1585]	1064	CASE DEFAULT
	1065
	1066	END SELECT
	1067	ENDIF
	1068	!
	1069	!-- Diffusive albedo is taken from Table 2
	1070	rrtm_aldif(0,:,:) = aldif
	1071	rrtm_asdif(0,:,:) = asdif
	1072
	1073	ELSE
	1074
	1075	rrtm_aldir(0,:,:) = 0.0_wp
	1076	rrtm_asdir(0,:,:) = 0.0_wp
	1077	rrtm_aldif(0,:,:) = 0.0_wp
	1078	rrtm_asdif(0,:,:) = 0.0_wp
	1079	ENDIF
	1080	END SUBROUTINE calc_albedo
	1081
	1082	!------------------------------------------------------------------------------!
	1083	! Description:
	1084	! ------------
[1682]	1085	!> Read sounding data (pressure and temperature) from RADIATION_DATA.
[1585]	1086	!------------------------------------------------------------------------------!
	1087	SUBROUTINE read_sounding_data
	1088
	1089	IMPLICIT NONE
	1090
[1691]	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
[1585]	1098
[1691]	1099	REAL(wp) :: t_surface !< actual surface temperature
[1585]	1100
[1691]	1101	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd_tmp, & !< temporary hydrostatic pressure profile (sounding)
	1102	t_snd_tmp !< temporary temperature profile (sounding)
[1585]	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 )
[1691]	1116
[1585]	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 )
[1691]	1125
[1585]	1126	DEALLOCATE ( rrtm_lwdflx )
[1691]	1127	DEALLOCATE ( rrtm_lwdflxc )
[1585]	1128	DEALLOCATE ( rrtm_lwuflx )
[1691]	1129	DEALLOCATE ( rrtm_lwuflxc )
	1130	DEALLOCATE ( rrtm_lwuflx_dt )
	1131	DEALLOCATE ( rrtm_lwuflxc_dt )
[1585]	1132	DEALLOCATE ( rrtm_lwhr )
	1133	DEALLOCATE ( rrtm_lwhrc )
[1691]	1134
[1585]	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 )
[1691]	1142	DEALLOCATE ( rrtm_sw_ecaer )
	1143
[1585]	1144	DEALLOCATE ( rrtm_swdflx )
[1691]	1145	DEALLOCATE ( rrtm_swdflxc )
[1585]	1146	DEALLOCATE ( rrtm_swuflx )
[1691]	1147	DEALLOCATE ( rrtm_swuflxc )
[1585]	1148	DEALLOCATE ( rrtm_swhr )
	1149	DEALLOCATE ( rrtm_swhrc )
[1691]	1150
[1585]	1151	ENDIF
	1152
	1153	!
	1154	!-- Open file for reading
	1155	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
[1783]	1156	CALL netcdf_handle_error_rad( 'read_sounding_data', 549 )
[1585]	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 )
[1783]	1162	CALL netcdf_handle_error_rad( 'read_sounding_data', 551 )
[1585]	1163
	1164	!
	1165	! !-- Allocate temporary array for storing pressure data
[1701]	1166	ALLOCATE( hyp_snd_tmp(1:nz_snd) )
[1585]	1167	hyp_snd_tmp = 0.0_wp
	1168
	1169
	1170	!-- Read pressure from file
	1171	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
[1691]	1172	nc_stat = NF90_GET_VAR( id, id_var, hyp_snd_tmp(:), start = (/1/), &
[1585]	1173	count = (/nz_snd/) )
[1783]	1174	CALL netcdf_handle_error_rad( 'read_sounding_data', 552 )
[1585]	1175
	1176	!
	1177	!-- Allocate temporary array for storing temperature data
[1701]	1178	ALLOCATE( t_snd_tmp(1:nz_snd) )
[1585]	1179	t_snd_tmp = 0.0_wp
	1180
	1181	!
	1182	!-- Read temperature from file
	1183	nc_stat = NF90_INQ_VARID( id, "ReferenceTemperature", id_var )
[1691]	1184	nc_stat = NF90_GET_VAR( id, id_var, t_snd_tmp(:), start = (/1/), &
[1585]	1185	count = (/nz_snd/) )
[1783]	1186	CALL netcdf_handle_error_rad( 'read_sounding_data', 553 )
[1585]	1187
	1188	!
	1189	!-- Calculate start of sounding data
	1190	nz_snd_start = nz_snd + 1
[1701]	1191	nz_snd_end = nz_snd + 1
[1585]	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
[1691]	1197	IF ( hyp_snd_tmp(k) < ( hyp(nzt+1) - 1000.0_wp) * 0.01_wp ) THEN
[1585]	1198	nz_snd_start = k
	1199	EXIT
	1200	END IF
	1201	END DO
	1202
[1691]	1203	IF ( nz_snd_start <= nz_snd ) THEN
[1701]	1204	nz_snd_end = nz_snd
[1585]	1205	END IF
	1206
	1207
	1208	!
	1209	!-- Calculate of total grid points for RRTMG calculations
[1701]	1210	nzt_rad = nzt + nz_snd_end - nz_snd_start + 1
[1585]	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
[1757]	1222	hyp_snd(nzt+2:nzt_rad) = hyp_snd_tmp(nz_snd_start+1:nz_snd_end)
	1223	t_snd(nzt+2:nzt_rad) = t_snd_tmp(nz_snd_start+1:nz_snd_end)
[1585]	1224
	1225	nc_stat = NF90_CLOSE( id )
	1226
	1227	!
	1228	!-- Calculate pressure levels on zu and zw grid. Sounding data is added at
	1229	!-- top of the LES domain. This routine does not consider horizontal or
	1230	!-- vertical variability of pressure and temperature
	1231	ALLOCATE ( rrtm_play(0:0,nzb+1:nzt_rad+1) )
	1232	ALLOCATE ( rrtm_plev(0:0,nzb+1:nzt_rad+2) )
	1233
[1691]	1234	t_surface = pt_surface * ( surface_pressure / 1000.0_wp )**0.286_wp
[1585]	1235	DO k = nzb+1, nzt+1
	1236	rrtm_play(0,k) = hyp(k) * 0.01_wp
	1237	rrtm_plev(0,k) = surface_pressure * ( (t_surface - g/cp * zw(k-1)) / &
	1238	t_surface )**(1.0_wp/0.286_wp)
	1239	ENDDO
	1240
	1241	DO k = nzt+2, nzt_rad
	1242	rrtm_play(0,k) = hyp_snd(k)
	1243	rrtm_plev(0,k) = 0.5_wp * ( rrtm_play(0,k) + rrtm_play(0,k-1) )
	1244	ENDDO
	1245	rrtm_plev(0,nzt_rad+1) = MAX( 0.5 * hyp_snd(nzt_rad), &
	1246	1.5 * hyp_snd(nzt_rad) &
	1247	- 0.5 * hyp_snd(nzt_rad-1) )
	1248	rrtm_plev(0,nzt_rad+2) = MIN( 1.0E-4_wp, &
	1249	0.25_wp * rrtm_plev(0,nzt_rad+1) )
	1250
	1251	rrtm_play(0,nzt_rad+1) = 0.5 * rrtm_plev(0,nzt_rad+1)
	1252
	1253	!
	1254	!-- Calculate temperature/humidity levels at top of the LES domain.
	1255	!-- Currently, the temperature is taken from sounding data (might lead to a
	1256	!-- temperature jump at interface. To do: Humidity is currently not
	1257	!-- calculated above the LES domain.
	1258	ALLOCATE ( rrtm_tlay(0:0,nzb+1:nzt_rad+1) )
	1259	ALLOCATE ( rrtm_tlev(0:0,nzb+1:nzt_rad+2) )
	1260	ALLOCATE ( rrtm_h2ovmr(0:0,nzb+1:nzt_rad+1) )
	1261
	1262	DO k = nzt+8, nzt_rad
	1263	rrtm_tlay(0,k) = t_snd(k)
	1264	rrtm_h2ovmr(0,k) = q_snd(k)
	1265	ENDDO
[1691]	1266	rrtm_tlay(0,nzt_rad+1) = 2.0_wp * rrtm_tlay(0,nzt_rad) &
	1267	- rrtm_tlay(0,nzt_rad-1)
[1585]	1268	DO k = nzt+9, nzt_rad+1
	1269	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) &
	1270	- rrtm_tlay(0,k-1)) &
	1271	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
	1272	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
	1273	ENDDO
	1274	rrtm_h2ovmr(0,nzt_rad+1) = rrtm_h2ovmr(0,nzt_rad)
	1275
	1276	rrtm_tlev(0,nzt_rad+2) = 2.0_wp * rrtm_tlay(0,nzt_rad+1) &
	1277	- rrtm_tlev(0,nzt_rad)
	1278	!
	1279	!-- Allocate remaining RRTMG arrays
	1280	ALLOCATE ( rrtm_cicewp(0:0,nzb+1:nzt_rad+1) )
	1281	ALLOCATE ( rrtm_cldfr(0:0,nzb+1:nzt_rad+1) )
	1282	ALLOCATE ( rrtm_cliqwp(0:0,nzb+1:nzt_rad+1) )
	1283	ALLOCATE ( rrtm_reice(0:0,nzb+1:nzt_rad+1) )
	1284	ALLOCATE ( rrtm_reliq(0:0,nzb+1:nzt_rad+1) )
	1285	ALLOCATE ( rrtm_lw_taucld(1:nbndlw+1,0:0,nzb+1:nzt_rad+1) )
	1286	ALLOCATE ( rrtm_lw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndlw+1) )
	1287	ALLOCATE ( rrtm_sw_taucld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1288	ALLOCATE ( rrtm_sw_ssacld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1289	ALLOCATE ( rrtm_sw_asmcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1290	ALLOCATE ( rrtm_sw_fsfcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1291	ALLOCATE ( rrtm_sw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1292	ALLOCATE ( rrtm_sw_ssaaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1293	ALLOCATE ( rrtm_sw_asmaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1294	ALLOCATE ( rrtm_sw_ecaer(0:0,nzb+1:nzt_rad+1,1:naerec+1) )
	1295
	1296	!
	1297	!-- The ice phase is currently not considered in PALM
	1298	rrtm_cicewp = 0.0_wp
	1299	rrtm_reice = 0.0_wp
	1300
	1301	!
	1302	!-- Set other parameters (move to NAMELIST parameters in the future)
	1303	rrtm_lw_tauaer = 0.0_wp
	1304	rrtm_lw_taucld = 0.0_wp
	1305	rrtm_sw_taucld = 0.0_wp
	1306	rrtm_sw_ssacld = 0.0_wp
	1307	rrtm_sw_asmcld = 0.0_wp
	1308	rrtm_sw_fsfcld = 0.0_wp
	1309	rrtm_sw_tauaer = 0.0_wp
	1310	rrtm_sw_ssaaer = 0.0_wp
	1311	rrtm_sw_asmaer = 0.0_wp
	1312	rrtm_sw_ecaer = 0.0_wp
	1313
	1314
	1315	ALLOCATE ( rrtm_swdflx(0:0,nzb:nzt_rad+1) )
	1316	ALLOCATE ( rrtm_swuflx(0:0,nzb:nzt_rad+1) )
	1317	ALLOCATE ( rrtm_swhr(0:0,nzb+1:nzt_rad+1) )
	1318	ALLOCATE ( rrtm_swuflxc(0:0,nzb:nzt_rad+1) )
	1319	ALLOCATE ( rrtm_swdflxc(0:0,nzb:nzt_rad+1) )
	1320	ALLOCATE ( rrtm_swhrc(0:0,nzb+1:nzt_rad+1) )
	1321
	1322	rrtm_swdflx = 0.0_wp
	1323	rrtm_swuflx = 0.0_wp
	1324	rrtm_swhr = 0.0_wp
	1325	rrtm_swuflxc = 0.0_wp
	1326	rrtm_swdflxc = 0.0_wp
	1327	rrtm_swhrc = 0.0_wp
	1328
	1329	ALLOCATE ( rrtm_lwdflx(0:0,nzb:nzt_rad+1) )
	1330	ALLOCATE ( rrtm_lwuflx(0:0,nzb:nzt_rad+1) )
	1331	ALLOCATE ( rrtm_lwhr(0:0,nzb+1:nzt_rad+1) )
	1332	ALLOCATE ( rrtm_lwuflxc(0:0,nzb:nzt_rad+1) )
	1333	ALLOCATE ( rrtm_lwdflxc(0:0,nzb:nzt_rad+1) )
	1334	ALLOCATE ( rrtm_lwhrc(0:0,nzb+1:nzt_rad+1) )
	1335
	1336	rrtm_lwdflx = 0.0_wp
	1337	rrtm_lwuflx = 0.0_wp
	1338	rrtm_lwhr = 0.0_wp
	1339	rrtm_lwuflxc = 0.0_wp
	1340	rrtm_lwdflxc = 0.0_wp
	1341	rrtm_lwhrc = 0.0_wp
	1342
[1691]	1343	ALLOCATE ( rrtm_lwuflx_dt(0:0,nzb:nzt_rad+1) )
	1344	ALLOCATE ( rrtm_lwuflxc_dt(0:0,nzb:nzt_rad+1) )
[1585]	1345
[1709]	1346	rrtm_lwuflx_dt = 0.0_wp
[1691]	1347	rrtm_lwuflxc_dt = 0.0_wp
	1348
[1585]	1349	END SUBROUTINE read_sounding_data
	1350
	1351
	1352	!------------------------------------------------------------------------------!
	1353	! Description:
	1354	! ------------
[1682]	1355	!> Read trace gas data from file
[1585]	1356	!------------------------------------------------------------------------------!
	1357	SUBROUTINE read_trace_gas_data
	1358
	1359	USE rrsw_ncpar
	1360
	1361	IMPLICIT NONE
	1362
[1691]	1363	INTEGER(iwp), PARAMETER :: num_trace_gases = 9 !< number of trace gases (absorbers)
[1585]	1364
[1691]	1365	CHARACTER(LEN=5), DIMENSION(num_trace_gases), PARAMETER :: & !< trace gas names
[1585]	1366	trace_names = (/'O3 ', 'CO2 ', 'CH4 ', 'N2O ', 'O2 ', &
	1367	'CFC11', 'CFC12', 'CFC22', 'CCL4 '/)
	1368
[1691]	1369	INTEGER(iwp) :: id, & !< NetCDF id
	1370	k, & !< loop index
	1371	m, & !< loop index
	1372	n, & !< loop index
	1373	nabs, & !< number of absorbers
	1374	np, & !< number of pressure levels
	1375	id_abs, & !< NetCDF id of the respective absorber
	1376	id_dim, & !< NetCDF id of asborber's dimension
	1377	id_var !< NetCDf id ot the absorber
[1585]	1378
	1379	REAL(wp) :: p_mls_l, p_mls_u, p_wgt_l, p_wgt_u, p_mls_m
	1380
	1381
[1682]	1382	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_mls, & !< pressure levels for the absorbers
	1383	rrtm_play_tmp, & !< temporary array for pressure zu-levels
	1384	rrtm_plev_tmp, & !< temporary array for pressure zw-levels
	1385	trace_path_tmp !< temporary array for storing trace gas path data
[1585]	1386
[1682]	1387	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: trace_mls, & !< array for storing the absorber amounts
	1388	trace_mls_path, & !< array for storing trace gas path data
	1389	trace_mls_tmp !< temporary array for storing trace gas data
[1585]	1390
	1391
	1392	!
	1393	!-- In case of updates, deallocate arrays first (sufficient to check one
	1394	!-- array as the others are automatically allocated)
	1395	IF ( ALLOCATED ( rrtm_o3vmr ) ) THEN
	1396	DEALLOCATE ( rrtm_o3vmr )
	1397	DEALLOCATE ( rrtm_co2vmr )
	1398	DEALLOCATE ( rrtm_ch4vmr )
	1399	DEALLOCATE ( rrtm_n2ovmr )
	1400	DEALLOCATE ( rrtm_o2vmr )
	1401	DEALLOCATE ( rrtm_cfc11vmr )
	1402	DEALLOCATE ( rrtm_cfc12vmr )
	1403	DEALLOCATE ( rrtm_cfc22vmr )
	1404	DEALLOCATE ( rrtm_ccl4vmr )
	1405	ENDIF
	1406
	1407	!
	1408	!-- Allocate trace gas profiles
	1409	ALLOCATE ( rrtm_o3vmr(0:0,1:nzt_rad+1) )
	1410	ALLOCATE ( rrtm_co2vmr(0:0,1:nzt_rad+1) )
	1411	ALLOCATE ( rrtm_ch4vmr(0:0,1:nzt_rad+1) )
	1412	ALLOCATE ( rrtm_n2ovmr(0:0,1:nzt_rad+1) )
	1413	ALLOCATE ( rrtm_o2vmr(0:0,1:nzt_rad+1) )
	1414	ALLOCATE ( rrtm_cfc11vmr(0:0,1:nzt_rad+1) )
	1415	ALLOCATE ( rrtm_cfc12vmr(0:0,1:nzt_rad+1) )
	1416	ALLOCATE ( rrtm_cfc22vmr(0:0,1:nzt_rad+1) )
	1417	ALLOCATE ( rrtm_ccl4vmr(0:0,1:nzt_rad+1) )
	1418
	1419	!
	1420	!-- Open file for reading
	1421	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
[1783]	1422	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 549 )
[1585]	1423	!
	1424	!-- Inquire dimension ids and dimensions
	1425	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim )
[1783]	1426	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1427	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = np)
[1783]	1428	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1429
	1430	nc_stat = NF90_INQ_DIMID( id, "Absorber", id_dim )
[1783]	1431	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1432	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = nabs )
[1783]	1433	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1434
	1435
	1436	!
	1437	!-- Allocate pressure, and trace gas arrays
	1438	ALLOCATE( p_mls(1:np) )
	1439	ALLOCATE( trace_mls(1:num_trace_gases,1:np) )
	1440	ALLOCATE( trace_mls_tmp(1:nabs,1:np) )
	1441
	1442
	1443	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
[1783]	1444	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1445	nc_stat = NF90_GET_VAR( id, id_var, p_mls )
[1783]	1446	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1447
	1448	nc_stat = NF90_INQ_VARID( id, "AbsorberAmountMLS", id_var )
[1783]	1449	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1450	nc_stat = NF90_GET_VAR( id, id_var, trace_mls_tmp )
[1783]	1451	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 550 )
[1585]	1452
	1453
	1454	!
	1455	!-- Write absorber amounts (mls) to trace_mls
	1456	DO n = 1, num_trace_gases
	1457	CALL getAbsorberIndex( TRIM( trace_names(n) ), id_abs )
	1458
	1459	trace_mls(n,1:np) = trace_mls_tmp(id_abs,1:np)
	1460
	1461	!
	1462	!-- Replace missing values by zero
	1463	WHERE ( trace_mls(n,:) > 2.0_wp )
	1464	trace_mls(n,:) = 0.0_wp
	1465	END WHERE
	1466	END DO
	1467
	1468	DEALLOCATE ( trace_mls_tmp )
	1469
	1470	nc_stat = NF90_CLOSE( id )
[1783]	1471	CALL netcdf_handle_error_rad( 'read_trace_gas_data', 551 )
[1585]	1472
	1473	!
	1474	!-- Add extra pressure level for calculations of the trace gas paths
	1475	ALLOCATE ( rrtm_play_tmp(1:nzt_rad+1) )
	1476	ALLOCATE ( rrtm_plev_tmp(1:nzt_rad+2) )
	1477
	1478	rrtm_play_tmp(1:nzt_rad) = rrtm_play(0,1:nzt_rad)
	1479	rrtm_plev_tmp(1:nzt_rad+1) = rrtm_plev(0,1:nzt_rad+1)
	1480	rrtm_play_tmp(nzt_rad+1) = rrtm_plev(0,nzt_rad+1) * 0.5_wp
	1481	rrtm_plev_tmp(nzt_rad+2) = MIN( 1.0E-4_wp, 0.25_wp &
	1482	* rrtm_plev(0,nzt_rad+1) )
	1483
	1484	!
	1485	!-- Calculate trace gas path (zero at surface) with interpolation to the
	1486	!-- sounding levels
	1487	ALLOCATE ( trace_mls_path(1:nzt_rad+2,1:num_trace_gases) )
	1488
	1489	trace_mls_path(nzb+1,:) = 0.0_wp
	1490
	1491	DO k = nzb+2, nzt_rad+2
	1492	DO m = 1, num_trace_gases
	1493	trace_mls_path(k,m) = trace_mls_path(k-1,m)
	1494
	1495	!
	1496	!-- When the pressure level is higher than the trace gas pressure
	1497	!-- level, assume that
[1691]	1498	IF ( rrtm_plev_tmp(k-1) > p_mls(1) ) THEN
[1585]	1499
	1500	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,1) &
	1501	* ( rrtm_plev_tmp(k-1) &
	1502	- MAX( p_mls(1), rrtm_plev_tmp(k) ) &
	1503	) / g
	1504	ENDIF
	1505
	1506	!
	1507	!-- Integrate for each sounding level from the contributing p_mls
	1508	!-- levels
	1509	DO n = 2, np
	1510	!
	1511	!-- Limit p_mls so that it is within the model level
	1512	p_mls_u = MIN( rrtm_plev_tmp(k-1), &
	1513	MAX( rrtm_plev_tmp(k), p_mls(n) ) )
	1514	p_mls_l = MIN( rrtm_plev_tmp(k-1), &
	1515	MAX( rrtm_plev_tmp(k), p_mls(n-1) ) )
	1516
[1691]	1517	IF ( p_mls_l > p_mls_u ) THEN
[1585]	1518
	1519	!
	1520	!-- Calculate weights for interpolation
	1521	p_mls_m = 0.5_wp * (p_mls_l + p_mls_u)
	1522	p_wgt_u = (p_mls(n-1) - p_mls_m) / (p_mls(n-1) - p_mls(n))
	1523	p_wgt_l = (p_mls_m - p_mls(n)) / (p_mls(n-1) - p_mls(n))
	1524
	1525	!
	1526	!-- Add level to trace gas path
	1527	trace_mls_path(k,m) = trace_mls_path(k,m) &
	1528	+ ( p_wgt_u * trace_mls(m,n) &
	1529	+ p_wgt_l * trace_mls(m,n-1) ) &
[1691]	1530	* (p_mls_l - p_mls_u) / g
[1585]	1531	ENDIF
	1532	ENDDO
	1533
[1691]	1534	IF ( rrtm_plev_tmp(k) < p_mls(np) ) THEN
[1585]	1535	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,np) &
	1536	* ( MIN( rrtm_plev_tmp(k-1), p_mls(np) ) &
	1537	- rrtm_plev_tmp(k) &
	1538	) / g
	1539	ENDIF
[1496]	1540	ENDDO
	1541	ENDDO
	1542
	1543
[1585]	1544	!
	1545	!-- Prepare trace gas path profiles
	1546	ALLOCATE ( trace_path_tmp(1:nzt_rad+1) )
[1496]	1547
[1585]	1548	DO m = 1, num_trace_gases
	1549
	1550	trace_path_tmp(1:nzt_rad+1) = ( trace_mls_path(2:nzt_rad+2,m) &
	1551	- trace_mls_path(1:nzt_rad+1,m) ) * g &
	1552	/ ( rrtm_plev_tmp(1:nzt_rad+1) &
	1553	- rrtm_plev_tmp(2:nzt_rad+2) )
	1554
	1555	!
	1556	!-- Save trace gas paths to the respective arrays
	1557	SELECT CASE ( TRIM( trace_names(m) ) )
	1558
	1559	CASE ( 'O3' )
	1560
	1561	rrtm_o3vmr(0,:) = trace_path_tmp(:)
	1562
	1563	CASE ( 'CO2' )
	1564
	1565	rrtm_co2vmr(0,:) = trace_path_tmp(:)
	1566
	1567	CASE ( 'CH4' )
	1568
	1569	rrtm_ch4vmr(0,:) = trace_path_tmp(:)
	1570
	1571	CASE ( 'N2O' )
	1572
	1573	rrtm_n2ovmr(0,:) = trace_path_tmp(:)
	1574
	1575	CASE ( 'O2' )
	1576
	1577	rrtm_o2vmr(0,:) = trace_path_tmp(:)
	1578
	1579	CASE ( 'CFC11' )
	1580
	1581	rrtm_cfc11vmr(0,:) = trace_path_tmp(:)
	1582
	1583	CASE ( 'CFC12' )
	1584
	1585	rrtm_cfc12vmr(0,:) = trace_path_tmp(:)
	1586
	1587	CASE ( 'CFC22' )
	1588
	1589	rrtm_cfc22vmr(0,:) = trace_path_tmp(:)
	1590
	1591	CASE ( 'CCL4' )
	1592
	1593	rrtm_ccl4vmr(0,:) = trace_path_tmp(:)
	1594
	1595	CASE DEFAULT
	1596
	1597	END SELECT
	1598
	1599	ENDDO
	1600
	1601	DEALLOCATE ( trace_path_tmp )
	1602	DEALLOCATE ( trace_mls_path )
	1603	DEALLOCATE ( rrtm_play_tmp )
	1604	DEALLOCATE ( rrtm_plev_tmp )
	1605	DEALLOCATE ( trace_mls )
	1606	DEALLOCATE ( p_mls )
	1607
	1608	END SUBROUTINE read_trace_gas_data
	1609
[1783]	1610	SUBROUTINE netcdf_handle_error_rad( routine_name, errno )
	1611
	1612	USE control_parameters, &
	1613	ONLY: message_string
	1614
	1615	USE NETCDF
	1616
	1617	USE pegrid
	1618
	1619	IMPLICIT NONE
	1620
	1621	CHARACTER(LEN=6) :: message_identifier
	1622	CHARACTER(LEN=*) :: routine_name
	1623
	1624	INTEGER(iwp) :: errno
	1625
	1626	IF ( nc_stat /= NF90_NOERR ) THEN
	1627
	1628	WRITE( message_identifier, '(''NC'',I4.4)' ) errno
	1629	message_string = TRIM( NF90_STRERROR( nc_stat ) )
	1630
	1631	CALL message( routine_name, message_identifier, 2, 2, 0, 6, 1 )
	1632
	1633	ENDIF
	1634
	1635	END SUBROUTINE netcdf_handle_error_rad
[1585]	1636	#endif
	1637
	1638
[1551]	1639	!------------------------------------------------------------------------------!
	1640	! Description:
	1641	! ------------
[1682]	1642	!> Calculate temperature tendency due to radiative cooling/heating.
	1643	!> Cache-optimized version.
[1551]	1644	!------------------------------------------------------------------------------!
[1585]	1645	SUBROUTINE radiation_tendency_ij ( i, j, tend )
[1496]	1646
[1585]	1647	USE cloud_parameters, &
[1691]	1648	ONLY: pt_d_t
[1551]	1649
[1585]	1650	IMPLICIT NONE
	1651
[1691]	1652	INTEGER(iwp) :: i, j, k !< loop indices
[1585]	1653
[1691]	1654	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend !< pt tendency term
[1585]	1655
	1656	#if defined ( __rrtmg )
	1657	!
[1691]	1658	!-- Calculate tendency based on heating rate
[1585]	1659	DO k = nzb+1, nzt+1
[1691]	1660	tend(k,j,i) = tend(k,j,i) + (rad_lw_hr(k,j,i) + rad_sw_hr(k,j,i)) &
	1661	* pt_d_t(k) * d_seconds_hour
[1585]	1662	ENDDO
	1663
	1664	#endif
	1665
	1666	END SUBROUTINE radiation_tendency_ij
	1667
	1668
[1551]	1669	!------------------------------------------------------------------------------!
	1670	! Description:
	1671	! ------------
[1682]	1672	!> Calculate temperature tendency due to radiative cooling/heating.
	1673	!> Vector-optimized version
[1551]	1674	!------------------------------------------------------------------------------!
[1585]	1675	SUBROUTINE radiation_tendency ( tend )
[1551]	1676
[1585]	1677	USE cloud_parameters, &
[1691]	1678	ONLY: pt_d_t
[1551]	1679
[1585]	1680	USE indices, &
	1681	ONLY: nxl, nxr, nyn, nys
	1682
	1683	IMPLICIT NONE
	1684
[1691]	1685	INTEGER(iwp) :: i, j, k !< loop indices
[1585]	1686
[1691]	1687	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend !< pt tendency term
[1585]	1688
	1689	#if defined ( __rrtmg )
[1691]	1690	!
	1691	!-- Calculate tendency based on heating rate
[1585]	1692	DO i = nxl, nxr
	1693	DO j = nys, nyn
	1694	DO k = nzb+1, nzt+1
[1691]	1695	tend(k,j,i) = tend(k,j,i) + ( rad_lw_hr(k,j,i) &
	1696	+ rad_sw_hr(k,j,i) ) * pt_d_t(k) &
	1697	* d_seconds_hour
[1585]	1698	ENDDO
	1699	ENDDO
	1700	ENDDO
	1701	#endif
	1702
	1703	END SUBROUTINE radiation_tendency
	1704
[1496]	1705	END MODULE radiation_model_mod

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