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source: palm/trunk/SOURCE/radiation_model.f90 @ 1603

Last change on this file since 1603 was 1591, checked in by maronga, 10 years ago
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[1496]	1	MODULE radiation_model_mod
	2
	3	!--------------------------------------------------------------------------------!
	4	! This file is part of PALM.
	5	!
	6	! PALM is free software: you can redistribute it and/or modify it under the terms
	7	! of the GNU General Public License as published by the Free Software Foundation,
	8	! either version 3 of the License, or (at your option) any later version.
	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[1585]	17	! Copyright 1997-2015 Leibniz Universitaet Hannover
[1496]	18	!--------------------------------------------------------------------------------!
	19	!
	20	! Current revisions:
	21	! -----------------
	22	!
[1591]	23	!
[1496]	24	! Former revisions:
	25	! -----------------
	26	! $Id: radiation_model.f90 1591 2015-05-08 13:57:15Z heinze $
	27	!
[1591]	28	! 1590 2015-05-08 13:56:27Z maronga
	29	! Bugfix: definition of character strings requires same length for all elements
	30	!
[1588]	31	! 1587 2015-05-04 14:19:01Z maronga
	32	! Added albedo class for snow
	33	!
[1586]	34	! 1585 2015-04-30 07:05:52Z maronga
	35	! Added support for RRTMG
	36	!
[1572]	37	! 1571 2015-03-12 16:12:49Z maronga
	38	! Added missing KIND attribute. Removed upper-case variable names
	39	!
[1552]	40	! 1551 2015-03-03 14:18:16Z maronga
	41	! Added support for data output. Various variables have been renamed. Added
	42	! interface for different radiation schemes (currently: clear-sky, constant, and
	43	! RRTM (not yet implemented).
	44	!
[1497]	45	! 1496 2014-12-02 17:25:50Z maronga
	46	! Initial revision
	47	!
[1496]	48	!
	49	! Description:
	50	! ------------
[1585]	51	! Radiation models and interfaces
	52	! To do: move variable definitions used in init_radiation only to the subroutine
	53	! as they are no longer required after initialization.
	54	! Note that many variables have a leading dummy dimension (0:0) in order to
	55	! match the assume-size shape expected by the RRTMG model
	56	!
	57	! To do:
	58	! - Output of full column vertical profiles used in RRTMG
	59	! - Output of other rrtm arrays (such as volume mixing ratios)
	60	! - Adapt for use with topography
	61	! - Remove 3D dummy arrays (such as clear-sky output)
[1496]	62	!------------------------------------------------------------------------------!
	63
	64	USE arrays_3d, &
[1585]	65	ONLY: hyp, pt, q, ql, zw
[1496]	66
[1585]	67	USE cloud_parameters, &
	68	ONLY: cp, l_v, nc_const, rho_l, sigma_gc
	69
	70	USE constants, &
	71	ONLY: pi
	72
[1496]	73	USE control_parameters, &
[1585]	74	ONLY: cloud_droplets, cloud_physics, g, initializing_actions, &
	75	large_scale_forcing, lsf_surf, phi, pt_surface, &
	76	surface_pressure, time_since_reference_point
[1496]	77
	78	USE indices, &
[1585]	79	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb_s_inner, nzb, nzt
[1496]	80
	81	USE kinds
	82
[1585]	83	USE netcdf
	84
[1551]	85	USE netcdf_control, &
	86	ONLY: dots_label, dots_num, dots_unit
[1496]	87
[1585]	88	#if defined ( __rrtmg )
	89	USE parrrsw, &
	90	ONLY: naerec, nbndsw
[1551]	91
[1585]	92	USE parrrtm, &
	93	ONLY: nbndlw
	94
	95	USE rrtmg_lw_init, &
	96	ONLY: rrtmg_lw_ini
	97
	98	USE rrtmg_sw_init, &
	99	ONLY: rrtmg_sw_ini
	100
	101	USE rrtmg_lw_rad, &
	102	ONLY: rrtmg_lw
	103
	104	USE rrtmg_sw_rad, &
	105	ONLY: rrtmg_sw
	106	#endif
	107
	108
	109
[1496]	110	IMPLICIT NONE
	111
[1585]	112	CHARACTER(10) :: radiation_scheme = 'clear-sky' ! 'constant', 'clear-sky', or 'rrtmg'
[1551]	113
[1585]	114	!
	115	!-- Predefined Land surface classes (albedo_type) after Briegleb (1992)
[1590]	116	CHARACTER(37), DIMENSION(0:16), PARAMETER :: albedo_type_name = (/ &
	117	'user defined ', & ! 0
	118	'ocean ', & ! 1
	119	'mixed farming, tall grassland ', & ! 2
	120	'tall/medium grassland ', & ! 3
	121	'evergreen shrubland ', & ! 4
	122	'short grassland/meadow/shrubland ', & ! 5
	123	'evergreen needleleaf forest ', & ! 6
	124	'mixed deciduous evergreen forest ', & ! 7
	125	'deciduous forest ', & ! 8
	126	'tropical evergreen broadleaved forest', & ! 9
	127	'medium/tall grassland/woodland ', & ! 10
	128	'desert, sandy ', & ! 11
	129	'desert, rocky ', & ! 12
	130	'tundra ', & ! 13
	131	'land ice ', & ! 14
	132	'sea ice ', & ! 15
	133	'snow ' & ! 16
[1585]	134	/)
[1496]	135
[1585]	136	INTEGER(iwp) :: albedo_type = 5, & !: Albedo surface type (default: short grassland)
	137	day, & !: current day of the year
	138	day_init = 172, & !: day of the year at model start (21/06)
	139	dots_rad = 0 !: starting index for timeseries output
[1496]	140
	141
	142
[1585]	143
	144
	145
	146	LOGICAL :: constant_albedo = .FALSE., & !: flag parameter indicating whether the albedo may change depending on zenith
	147	lw_radiation = .TRUE., & !: flag parameter indicing whether longwave radiation shall be calculated
	148	radiation = .FALSE., & !: flag parameter indicating whether the radiation model is used
	149	sun_up = .TRUE., & !: flag parameter indicating whether the sun is up or down
	150	sw_radiation = .TRUE. !: flag parameter indicing whether shortwave radiation shall be calculated
	151
	152	REAL(wp), PARAMETER :: sigma_sb = 5.67E-8_wp, & !: Stefan-Boltzmann constant
	153	solar_constant = 1368.0_wp !: solar constant at top of atmosphere
[1496]	154
[1585]	155	REAL(wp) :: albedo = 9999999.9_wp, & !: NAMELIST alpha
	156	albedo_lw_dif = 9999999.9_wp, & !: NAMELIST aldif
	157	albedo_lw_dir = 9999999.9_wp, & !: NAMELIST aldir
	158	albedo_sw_dif = 9999999.9_wp, & !: NAMELIST asdif
	159	albedo_sw_dir = 9999999.9_wp, & !: NAMELIST asdir
	160	dt_radiation = 0.0_wp, & !: radiation model timestep
	161	emissivity = 0.95_wp, & !: NAMELIST surface emissivity
	162	exn, & !: Exner function
	163	lon = 0.0_wp, & !: longitude in radians
	164	lat = 0.0_wp, & !: latitude in radians
	165	decl_1, & !: declination coef. 1
	166	decl_2, & !: declination coef. 2
	167	decl_3, & !: declination coef. 3
	168	time_utc, & !: current time in UTC
	169	time_utc_init = 43200.0_wp, & !: UTC time at model start (noon)
	170	lambda = 0.0_wp, & !: longitude in degrees
	171	net_radiation = 0.0_wp, & !: net radiation at surface
	172	time_radiation = 0.0_wp, & !: time since last call of radiation code
	173	sky_trans !: sky transmissivity
[1496]	174
[1585]	175
	176	REAL(wp), DIMENSION(0:0) :: zenith !: solar zenith angle
	177
[1496]	178	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: &
[1585]	179	alpha, & !: surface broadband albedo (used for clear-sky scheme)
[1551]	180	rad_net, & !: net radiation at the surface
[1585]	181	rad_net_av !: average of rad_net
[1496]	182
[1585]	183	!
	184	!-- Land surface albedos for solar zenith angle of 60Â° after Briegleb (1992)
	185	!-- (shortwave, longwave, broadband): sw, lw, bb,
[1587]	186	REAL(wp), DIMENSION(0:2,1:16), PARAMETER :: albedo_pars = RESHAPE( (/&
[1585]	187	0.06_wp, 0.06_wp, 0.06_wp, & ! 1
	188	0.09_wp, 0.28_wp, 0.19_wp, & ! 2
	189	0.11_wp, 0.33_wp, 0.23_wp, & ! 3
	190	0.11_wp, 0.33_wp, 0.23_wp, & ! 4
	191	0.14_wp, 0.34_wp, 0.25_wp, & ! 5
	192	0.06_wp, 0.22_wp, 0.14_wp, & ! 6
	193	0.06_wp, 0.27_wp, 0.17_wp, & ! 7
	194	0.06_wp, 0.31_wp, 0.19_wp, & ! 8
	195	0.06_wp, 0.22_wp, 0.14_wp, & ! 9
	196	0.06_wp, 0.28_wp, 0.18_wp, & ! 10
	197	0.35_wp, 0.51_wp, 0.43_wp, & ! 11
	198	0.24_wp, 0.40_wp, 0.32_wp, & ! 12
	199	0.10_wp, 0.27_wp, 0.19_wp, & ! 13
	200	0.90_wp, 0.65_wp, 0.77_wp, & ! 14
[1587]	201	0.90_wp, 0.65_wp, 0.77_wp, & ! 15
	202	0.95_wp, 0.70_wp, 0.82_wp & ! 16
	203	/), (/ 3, 16 /) )
[1496]	204
[1585]	205	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE, TARGET :: &
	206	rad_sw_in, & !: incoming shortwave radiation (W/m2)
	207	rad_sw_in_av, & !: average of rad_sw_in
	208	rad_sw_out, & !: outgoing shortwave radiation (W/m2)
	209	rad_sw_out_av, & !: average of rad_sw_out
	210	rad_lw_in, & !: incoming longwave radiation (W/m2)
	211	rad_lw_in_av, & !: average of rad_lw_in
	212	rad_lw_out, & !: outgoing longwave radiation (W/m2)
	213	rad_lw_out_av !: average of rad_lw_out
	214
	215	!
	216	!-- Variables and parameters used in RRTMG only
	217	#if defined ( __rrtmg )
	218	CHARACTER(LEN=12) :: rrtm_input_file = "RAD_SND_DATA" !: name of the NetCDF input file (sounding data)
	219
	220
	221	!
	222	!-- Flag parameters for RRTMGS (should not be changed)
	223	INTEGER(iwp), PARAMETER :: rrtm_inflglw = 2, & !: flag for lw cloud optical properties (0,1,2)
	224	rrtm_iceflglw = 0, & !: flag for lw ice particle specifications (0,1,2,3)
	225	rrtm_liqflglw = 1, & !: flag for lw liquid droplet specifications
	226	rrtm_inflgsw = 2, & !: flag for sw cloud optical properties (0,1,2)
	227	rrtm_iceflgsw = 0, & !: flag for sw ice particle specifications (0,1,2,3)
	228	rrtm_liqflgsw = 1 !: flag for sw liquid droplet specifications
	229
	230	!
	231	!-- The following variables should be only changed with care, as this will
	232	!-- require further setting of some variables, which is currently not
	233	!-- implemented (aerosols, ice phase).
	234	INTEGER(iwp) :: nzt_rad, & !: upper vertical limit for radiation calculations
	235	rrtm_icld = 0, & !: cloud flag (0: clear sky column, 1: cloudy column)
	236	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)
	237	rrtm_idrv = 0 !: longwave upward flux calculation option (0,1)
	238
	239	LOGICAL :: snd_exists = .FALSE. !: flag parameter to check whether a user-defined input files exists
	240
	241	REAL(wp), PARAMETER :: mol_weight_air_d_wv = 1.607793_wp !: molecular weight dry air / water vapor
	242
	243	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd, & !: hypostatic pressure from sounding data (hPa)
	244	q_snd, & !: specific humidity from sounding data (kg/kg) - dummy at the moment
	245	rrtm_tsfc, & !: dummy array for storing surface temperature
	246	t_snd !: actual temperature from sounding data (hPa)
	247
	248	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: aldif, & !: longwave diffuse albedo solar angle of 60Â°
	249	aldir, & !: longwave direct albedo solar angle of 60Â°
	250	asdif, & !: shortwave diffuse albedo solar angle of 60Â°
	251	asdir, & !: shortwave direct albedo solar angle of 60Â°
	252	rrtm_ccl4vmr, & !: CCL4 volume mixing ratio (g/mol)
	253	rrtm_cfc11vmr, & !: CFC11 volume mixing ratio (g/mol)
	254	rrtm_cfc12vmr, & !: CFC12 volume mixing ratio (g/mol)
	255	rrtm_cfc22vmr, & !: CFC22 volume mixing ratio (g/mol)
	256	rrtm_ch4vmr, & !: CH4 volume mixing ratio
	257	rrtm_cicewp, & !: in-cloud ice water path (g/mÂ²)
	258	rrtm_cldfr, & !: cloud fraction (0,1)
	259	rrtm_cliqwp, & !: in-cloud liquid water path (g/mÂ²)
	260	rrtm_co2vmr, & !: CO2 volume mixing ratio (g/mol)
	261	rrtm_emis, & !: surface emissivity (0-1)
	262	rrtm_h2ovmr, & !: H2O volume mixing ratio
	263	rrtm_n2ovmr, & !: N2O volume mixing ratio
	264	rrtm_o2vmr, & !: O2 volume mixing ratio
	265	rrtm_o3vmr, & !: O3 volume mixing ratio
	266	rrtm_play, & !: pressure layers (hPa, zu-grid)
	267	rrtm_plev, & !: pressure layers (hPa, zw-grid)
	268	rrtm_reice, & !: cloud ice effective radius (microns)
	269	rrtm_reliq, & !: cloud water drop effective radius (microns)
	270	rrtm_tlay, & !: actual temperature (K, zu-grid)
	271	rrtm_tlev, & !: actual temperature (K, zw-grid)
	272	rrtm_lwdflx, & !: RRTM output of incoming longwave radiation flux (W/m2)
	273	rrtm_lwuflx, & !: RRTM output of outgoing longwave radiation flux (W/m2)
	274	rrtm_lwhr, & !: RRTM output of longwave radiation heating rate (K/d)
	275	rrtm_lwuflxc, & !: RRTM output of incoming clear sky longwave radiation flux (W/m2)
	276	rrtm_lwdflxc, & !: RRTM output of outgoing clear sky longwave radiation flux (W/m2)
	277	rrtm_lwhrc, & !: RRTM output of incoming longwave clear sky radiation heating rate (K/d)
	278	rrtm_swdflx, & !: RRTM output of incoming shortwave radiation flux (W/m2)
	279	rrtm_swuflx, & !: RRTM output of outgoing shortwave radiation flux (W/m2)
	280	rrtm_swhr, & !: RRTM output of shortwave radiation heating rate (K/d)
	281	rrtm_swuflxc, & !: RRTM output of incoming clear sky shortwave radiation flux (W/m2)
	282	rrtm_swdflxc, & !: RRTM output of outgoing clear sky shortwave radiation flux (W/m2)
	283	rrtm_swhrc !: RRTM output of incoming shortwave clear sky radiation heating rate (K/d)
	284
	285	!
	286	!-- Definition of arrays that are currently not used for calling RRTMG (due to setting of flag parameters)
	287	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rad_lw_cs_in, & !: incoming clear sky longwave radiation (W/m2) (not used)
	288	rad_lw_cs_out, & !: outgoing clear sky longwave radiation (W/m2) (not used)
	289	rad_lw_cs_hr, & !: longwave clear sky radiation heating rate (K/d) (not used)
	290	rad_lw_hr, & !: longwave radiation heating rate (K/d)
	291	rad_sw_cs_in, & !: incoming clear sky shortwave radiation (W/m2) (not used)
	292	rad_sw_cs_out, & !: outgoing clear sky shortwave radiation (W/m2) (not used)
	293	rad_sw_cs_hr, & !: shortwave clear sky radiation heating rate (K/d) (not used)
	294	rad_sw_hr, & !: shortwave radiation heating rate (K/d)
	295	rrtm_aldif, & !: surface albedo for longwave diffuse radiation
	296	rrtm_aldir, & !: surface albedo for longwave direct radiation
	297	rrtm_asdif, & !: surface albedo for shortwave diffuse radiation
	298	rrtm_asdir, & !: surface albedo for shortwave direct radiation
	299	rrtm_lw_tauaer, & !: lw aerosol optical depth
	300	rrtm_lw_taucld, & !: lw in-cloud optical depth
	301	rrtm_sw_taucld, & !: sw in-cloud optical depth
	302	rrtm_sw_ssacld, & !: sw in-cloud single scattering albedo
	303	rrtm_sw_asmcld, & !: sw in-cloud asymmetry parameter
	304	rrtm_sw_fsfcld, & !: sw in-cloud forward scattering fraction
	305	rrtm_sw_tauaer, & !: sw aerosol optical depth
	306	rrtm_sw_ssaaer, & !: sw aerosol single scattering albedo
	307	rrtm_sw_asmaer, & !: sw aerosol asymmetry parameter
	308	rrtm_sw_ecaer !: sw aerosol optical detph at 0.55 microns (rrtm_iaer = 6 only)
	309	#endif
	310
[1496]	311	INTERFACE init_radiation
	312	MODULE PROCEDURE init_radiation
	313	END INTERFACE init_radiation
	314
[1551]	315	INTERFACE radiation_clearsky
	316	MODULE PROCEDURE radiation_clearsky
	317	END INTERFACE radiation_clearsky
[1496]	318
[1585]	319	INTERFACE radiation_rrtmg
	320	MODULE PROCEDURE radiation_rrtmg
	321	END INTERFACE radiation_rrtmg
[1551]	322
[1585]	323	INTERFACE radiation_tendency
	324	MODULE PROCEDURE radiation_tendency
	325	MODULE PROCEDURE radiation_tendency_ij
	326	END INTERFACE radiation_tendency
[1551]	327
[1496]	328	SAVE
	329
	330	PRIVATE
	331
[1585]	332	PUBLIC albedo, albedo_type, albedo_type_name, albedo_lw_dif, albedo_lw_dir,&
	333	albedo_sw_dif, albedo_sw_dir, constant_albedo, day_init, dots_rad, &
	334	dt_radiation, init_radiation, lambda, lw_radiation, net_radiation, &
	335	rad_net, rad_net_av, radiation, radiation_clearsky, &
	336	radiation_rrtmg, radiation_scheme, radiation_tendency, rad_lw_in, &
	337	rad_lw_in_av, rad_lw_out, rad_lw_out_av, rad_sw_in, rad_sw_in_av, &
	338	rad_sw_out, rad_sw_out_av, sigma_sb, sw_radiation, time_radiation, &
	339	time_utc_init
[1496]	340
[1585]	341	#if defined ( __rrtmg )
	342	PUBLIC rrtm_aldif, rrtm_aldir, rrtm_asdif, rrtm_asdir
	343	#endif
[1496]	344
	345	CONTAINS
	346
	347	!------------------------------------------------------------------------------!
	348	! Description:
	349	! ------------
	350	!-- Initialization of the radiation model
	351	!------------------------------------------------------------------------------!
	352	SUBROUTINE init_radiation
	353
	354	IMPLICIT NONE
	355
[1585]	356	!
	357	!-- Allocate array for storing the surface net radiation
	358	IF ( .NOT. ALLOCATED ( rad_net ) ) THEN
	359	ALLOCATE ( rad_net(nysg:nyng,nxlg:nxrg) )
	360	rad_net = 0.0_wp
	361	ENDIF
[1496]	362
	363	!
[1551]	364	!-- Fix net radiation in case of radiation_scheme = 'constant'
[1585]	365	IF ( radiation_scheme == 'constant' ) THEN
[1551]	366	rad_net = net_radiation
[1585]	367	radiation = .FALSE.
[1551]	368	!
[1585]	369	!-- Calculate orbital constants
	370	ELSE
[1551]	371	decl_1 = SIN(23.45_wp * pi / 180.0_wp)
	372	decl_2 = 2.0_wp * pi / 365.0_wp
	373	decl_3 = decl_2 * 81.0_wp
[1585]	374	lat = phi * pi / 180.0_wp
	375	lon = lambda * pi / 180.0_wp
	376	ENDIF
	377
	378
	379	IF ( radiation_scheme == 'clear-sky' ) THEN
	380
	381	ALLOCATE ( alpha(nysg:nyng,nxlg:nxrg) )
	382
	383	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
	384	ALLOCATE ( rad_sw_in(0:0,nysg:nyng,nxlg:nxrg) )
	385	ENDIF
	386	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
	387	ALLOCATE ( rad_sw_out(0:0,nysg:nyng,nxlg:nxrg) )
	388	ENDIF
	389
	390	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
	391	ALLOCATE ( rad_sw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
	392	ENDIF
	393	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
	394	ALLOCATE ( rad_sw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
	395	ENDIF
	396
	397	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
	398	ALLOCATE ( rad_lw_in(0:0,nysg:nyng,nxlg:nxrg) )
	399	ENDIF
	400	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
	401	ALLOCATE ( rad_lw_out(0:0,nysg:nyng,nxlg:nxrg) )
	402	ENDIF
	403
	404	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
	405	ALLOCATE ( rad_lw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
	406	ENDIF
	407	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
	408	ALLOCATE ( rad_lw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
	409	ENDIF
	410
	411	rad_sw_in = 0.0_wp
	412	rad_sw_out = 0.0_wp
	413	rad_lw_in = 0.0_wp
	414	rad_lw_out = 0.0_wp
	415
[1496]	416	!
[1585]	417	!-- Overwrite albedo if manually set in parameter file
	418	IF ( albedo_type /= 0 .AND. albedo == 9999999.9_wp ) THEN
	419	albedo = albedo_pars(2,albedo_type)
	420	ENDIF
	421
	422	alpha = albedo
	423
	424	!
	425	!-- Initialization actions for RRTMG
	426	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	427	#if defined ( __rrtmg )
	428	!
	429	!-- Allocate albedos
	430	ALLOCATE ( rrtm_aldif(0:0,nysg:nyng,nxlg:nxrg) )
	431	ALLOCATE ( rrtm_aldir(0:0,nysg:nyng,nxlg:nxrg) )
	432	ALLOCATE ( rrtm_asdif(0:0,nysg:nyng,nxlg:nxrg) )
	433	ALLOCATE ( rrtm_asdir(0:0,nysg:nyng,nxlg:nxrg) )
	434	ALLOCATE ( aldif(nysg:nyng,nxlg:nxrg) )
	435	ALLOCATE ( aldir(nysg:nyng,nxlg:nxrg) )
	436	ALLOCATE ( asdif(nysg:nyng,nxlg:nxrg) )
	437	ALLOCATE ( asdir(nysg:nyng,nxlg:nxrg) )
	438
	439	IF ( albedo_type /= 0 ) THEN
	440	IF ( albedo_lw_dif == 9999999.9_wp ) THEN
	441	albedo_lw_dif = albedo_pars(0,albedo_type)
	442	albedo_lw_dir = albedo_lw_dif
	443	ENDIF
	444	IF ( albedo_sw_dif == 9999999.9_wp ) THEN
	445	albedo_sw_dif = albedo_pars(1,albedo_type)
	446	albedo_sw_dir = albedo_sw_dif
	447	ENDIF
	448	ENDIF
	449
	450	aldif(:,:) = albedo_lw_dif
	451	aldir(:,:) = albedo_lw_dir
	452	asdif(:,:) = albedo_sw_dif
	453	asdir(:,:) = albedo_sw_dir
	454	!
	455	!-- Calculate initial values of current (cosine of) the zenith angle and
	456	!-- whether the sun is up
	457	CALL calc_zenith
	458	!
	459	!-- Calculate initial surface albedo
	460	IF ( .NOT. constant_albedo ) THEN
	461	CALL calc_albedo
	462	ELSE
	463	rrtm_aldif(0,:,:) = aldif(:,:)
	464	rrtm_aldir(0,:,:) = aldir(:,:)
	465	rrtm_asdif(0,:,:) = asdif(:,:)
	466	rrtm_asdir(0,:,:) = asdir(:,:)
	467	ENDIF
	468
	469	!
	470	!-- Allocate surface emissivity
	471	ALLOCATE ( rrtm_emis(0:0,1:nbndlw+1) )
	472	rrtm_emis = emissivity
	473
	474	!
	475	!-- Allocate 3d arrays of radiative fluxes and heating rates
	476	ALLOCATE ( rad_sw_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) )
	477	ALLOCATE ( rad_sw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	478	ALLOCATE ( rad_sw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	479	ALLOCATE ( rad_sw_cs_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) )
	480
	481	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
	482	ALLOCATE ( rad_sw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	483	rad_sw_in = 0.0_wp
	484
	485	ENDIF
	486
	487	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
	488	ALLOCATE ( rad_sw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	489	rad_sw_out = 0.0_wp
	490	ENDIF
	491
	492	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
	493	ALLOCATE ( rad_sw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	494	ENDIF
	495
	496	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
	497	ALLOCATE ( rad_sw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	498	ENDIF
	499
	500	ALLOCATE ( rad_lw_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) )
	501	ALLOCATE ( rad_lw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	502	ALLOCATE ( rad_lw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	503	ALLOCATE ( rad_lw_cs_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) )
	504
	505	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
	506	ALLOCATE ( rad_lw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	507	rad_lw_in = 0.0_wp
	508	ENDIF
	509
	510	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
	511	ALLOCATE ( rad_lw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	512	ENDIF
	513
	514	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
	515	ALLOCATE ( rad_lw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	516	rad_lw_out = 0.0_wp
	517	ENDIF
	518
	519	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
	520	ALLOCATE ( rad_lw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	521	ENDIF
	522
	523	rad_sw_hr = 0.0_wp
	524	rad_sw_cs_in = 0.0_wp
	525	rad_sw_cs_out = 0.0_wp
	526	rad_sw_cs_hr = 0.0_wp
	527
	528	rad_lw_hr = 0.0_wp
	529	rad_lw_cs_in = 0.0_wp
	530	rad_lw_cs_out = 0.0_wp
	531	rad_lw_cs_hr = 0.0_wp
	532
	533	!
	534	!-- Allocate dummy array for storing surface temperature
	535	ALLOCATE ( rrtm_tsfc(1) )
	536
	537	!
	538	!-- Initialize RRTMG
	539	IF ( lw_radiation ) CALL rrtmg_lw_ini ( cp )
	540	IF ( sw_radiation ) CALL rrtmg_sw_ini ( cp )
	541
	542	!
	543	!-- Set input files for RRTMG
	544	INQUIRE(FILE="RAD_SND_DATA", EXIST=snd_exists)
	545	IF ( .NOT. snd_exists ) THEN
	546	rrtm_input_file = "rrtmg_lw.nc"
	547	ENDIF
	548
	549	!
	550	!-- Read vertical layers for RRTMG from sounding data
	551	!-- The routine provides nzt_rad, hyp_snd(1:nzt_rad),
	552	!-- t_snd(nzt+2:nzt_rad), rrtm_play(1:nzt_rad), rrtm_plev(1_nzt_rad+1),
	553	!-- rrtm_tlay(nzt+2:nzt_rad), rrtm_tlev(nzt+2:nzt_rad+1)
	554	CALL read_sounding_data
	555
	556	!
	557	!-- Read trace gas profiles from file. This routine provides
	558	!-- the rrtm_ arrays (1:nzt_rad+1)
	559	CALL read_trace_gas_data
	560	#endif
[1551]	561	ENDIF
[1585]	562
[1551]	563	!
[1585]	564	!-- Perform user actions if required
	565	CALL user_init_radiation
	566
	567
	568	!
[1551]	569	!-- Add timeseries for radiation model
[1585]	570	dots_rad = dots_num + 1
[1551]	571	dots_label(dots_num+1) = "rad_net"
[1585]	572	dots_label(dots_num+2) = "rad_lw_in"
	573	dots_label(dots_num+3) = "rad_lw_out"
	574	dots_label(dots_num+4) = "rad_sw_in"
	575	dots_label(dots_num+5) = "rad_sw_out"
	576	dots_unit(dots_num+1:dots_num+5) = "W/m2"
	577	dots_num = dots_num + 5
[1496]	578
[1585]	579	!
	580	!-- Output of albedos is only required for RRTMG
	581	IF ( radiation_scheme == 'rrtmg' ) THEN
	582	dots_label(dots_num+1) = "rrtm_aldif"
	583	dots_label(dots_num+2) = "rrtm_aldir"
	584	dots_label(dots_num+3) = "rrtm_asdif"
	585	dots_label(dots_num+4) = "rrtm_asdir"
	586	dots_unit(dots_num+1:dots_num+4) = ""
	587	dots_num = dots_num + 4
	588	ENDIF
[1551]	589
[1585]	590	!
	591	!-- Calculate radiative fluxes at model start
	592	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	593	IF ( radiation_scheme == 'clear-sky' ) THEN
	594	CALL radiation_clearsky
	595	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	596	CALL radiation_rrtmg
	597	ENDIF
	598	ENDIF
	599
[1496]	600	RETURN
	601
	602	END SUBROUTINE init_radiation
	603
	604
	605	!------------------------------------------------------------------------------!
	606	! Description:
	607	! ------------
	608	!-- A simple clear sky radiation model
	609	!------------------------------------------------------------------------------!
[1551]	610	SUBROUTINE radiation_clearsky
[1496]	611
[1585]	612	USE indices, &
	613	ONLY: nbgp
	614
[1496]	615	IMPLICIT NONE
	616
[1585]	617	INTEGER(iwp) :: i, j, k
	618
[1496]	619	!
[1585]	620	!-- Calculate current zenith angle
	621	CALL calc_zenith
	622
	623	!
	624	!-- Calculate sky transmissivity
	625	sky_trans = 0.6_wp + 0.2_wp * zenith(0)
	626
	627	!
	628	!-- Calculate value of the Exner function
	629	exn = (surface_pressure / 1000.0_wp )**0.286_wp
	630	!
	631	!-- Calculate radiation fluxes and net radiation (rad_net) for each grid
	632	!-- point
	633	DO i = nxl, nxr
	634	DO j = nys, nyn
	635	k = nzb_s_inner(j,i)
	636	rad_sw_in(0,j,i) = solar_constant * sky_trans * zenith(0)
	637	rad_sw_out(0,j,i) = alpha(j,i) * rad_sw_in(0,j,i)
	638	rad_lw_out(0,j,i) = sigma_sb * (pt(k,j,i) * exn)**4
	639	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt(k+1,j,i) * exn)**4
	640	rad_net(j,i) = rad_sw_in(0,j,i) - rad_sw_out(0,j,i) &
	641	+ rad_lw_in(0,j,i) - rad_lw_out(0,j,i)
	642
	643	ENDDO
	644	ENDDO
	645
	646	CALL exchange_horiz_2d( rad_lw_in, nbgp )
	647	CALL exchange_horiz_2d( rad_lw_out, nbgp )
	648	CALL exchange_horiz_2d( rad_sw_in, nbgp )
	649	CALL exchange_horiz_2d( rad_sw_out, nbgp )
	650	CALL exchange_horiz_2d( rad_net, nbgp )
	651
	652	RETURN
	653
	654	END SUBROUTINE radiation_clearsky
	655
	656
	657	!------------------------------------------------------------------------------!
	658	! Description:
	659	! ------------
	660	!-- Implementation of the RRTMG radiation_scheme
	661	!------------------------------------------------------------------------------!
	662	SUBROUTINE radiation_rrtmg
	663
	664	USE indices, &
	665	ONLY: nbgp
	666
	667	USE particle_attributes, &
	668	ONLY: grid_particles, number_of_particles, particles, &
	669	particle_advection_start, prt_count
	670
	671	IMPLICIT NONE
	672
	673	#if defined ( __rrtmg )
	674
	675	INTEGER(iwp) :: i, j, k, n !:
	676
	677	REAL(wp) :: s_r2 !: weighted sum over all droplets with r^2
	678	REAL(wp) :: s_r3 !: weighted sum over all droplets with r^3
	679
	680	!
	681	!-- Calculate current (cosine of) zenith angle and whether the sun is up
	682	CALL calc_zenith
	683	!
	684	!-- Calculate surface albedo
	685	IF ( .NOT. constant_albedo ) THEN
	686	CALL calc_albedo
	687	ENDIF
	688
	689	!
	690	!-- Prepare input data for RRTMG
	691
	692	!
	693	!-- In case of large scale forcing with surface data, calculate new pressure
	694	!-- profile. nzt_rad might be modified by these calls and all required arrays
	695	!-- will then be re-allocated
	696	IF ( large_scale_forcing .AND. lsf_surf ) THEN
	697	CALL read_sounding_data
	698	CALL read_trace_gas_data
	699	ENDIF
	700	!
	701	!-- Loop over all grid points
	702	DO i = nxl, nxr
	703	DO j = nys, nyn
	704
	705	!
	706	!-- Prepare profiles of temperature and H2O volume mixing ratio
	707	rrtm_tlev(0,nzb+1) = pt(nzb,j,i)
	708
	709	DO k = nzb+1, nzt+1
	710	rrtm_tlay(0,k) = pt(k,j,i) * ( (hyp(k) ) / 100000.0_wp &
	711	)*0.286_wp + ( l_v / cp ) ql(k,j,i)
	712	rrtm_h2ovmr(0,k) = mol_weight_air_d_wv * (q(k,j,i) - ql(k,j,i))
	713
	714	ENDDO
	715
	716	!
	717	!-- Avoid temperature/humidity jumps at the top of the LES domain by
	718	!-- linear interpolation from nzt+2 to nzt+7
	719	DO k = nzt+2, nzt+7
	720	rrtm_tlay(0,k) = rrtm_tlay(0,nzt+1) &
	721	+ ( rrtm_tlay(0,nzt+8) - rrtm_tlay(0,nzt+1) ) &
	722	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) ) &
	723	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
	724
	725	rrtm_h2ovmr(0,k) = rrtm_h2ovmr(0,nzt+1) &
	726	+ ( rrtm_h2ovmr(0,nzt+8) - rrtm_h2ovmr(0,nzt+1) )&
	727	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) )&
	728	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
	729
	730	ENDDO
	731
	732	!-- Linear interpolate to zw grid
	733	DO k = nzb+2, nzt+8
	734	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) - &
	735	rrtm_tlay(0,k-1)) &
	736	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
	737	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
	738	ENDDO
	739
	740
	741	!
	742	!-- Calculate liquid water path and cloud fraction for each column.
	743	!-- Note that LWP is required in g/mÂ² instead of kg/kg m.
	744	rrtm_cldfr = 0.0_wp
	745	rrtm_reliq = 0.0_wp
	746	rrtm_cliqwp = 0.0_wp
	747
	748	DO k = nzb+1, nzt+1
	749	rrtm_cliqwp(0,k) = ql(k,j,i) * 1000.0_wp * &
	750	(rrtm_plev(0,k) - rrtm_plev(0,k+1)) * 100.0_wp / g
	751
	752	IF ( rrtm_cliqwp(0,k) .GT. 0 ) THEN
	753	rrtm_cldfr(0,k) = 1.0_wp
	754	rrtm_icld = 1
	755
	756	!
	757	!-- Calculate cloud droplet effective radius
	758	IF ( cloud_physics ) THEN
	759	rrtm_reliq(0,k) = 1.0E6_wp * ( 3.0_wp * ql(k,j,i) &
	760	/ ( 4.0_wp * pi * nc_const * rho_l ) &
	761	)**0.33333333333333_wp &
	762	* EXP( LOG( sigma_gc )**2 )
	763
	764	ELSEIF ( cloud_droplets ) THEN
	765	number_of_particles = prt_count(k,j,i)
	766
	767	IF (number_of_particles <= 0) CYCLE
	768	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	769	s_r2 = 0.0_wp
	770	s_r3 = 0.0_wp
	771
	772	DO n = 1, number_of_particles
	773	IF ( particles(n)%particle_mask ) THEN
	774	s_r2 = s_r2 + particles(n)%radius*2 &
	775	particles(n)%weight_factor
	776	s_r3 = s_r3 + particles(n)%radius*3 &
	777	particles(n)%weight_factor
	778	ENDIF
	779	ENDDO
	780
	781	IF ( s_r2 > 0.0_wp ) rrtm_reliq(0,k) = s_r3 / s_r2
	782
	783	ENDIF
	784
	785	!
	786	!-- Limit effective radius
	787	IF ( rrtm_reliq(0,k) .GT. 0.0_wp ) THEN
	788	rrtm_reliq(0,k) = MAX(rrtm_reliq(0,k),2.5_wp)
	789	rrtm_reliq(0,k) = MIN(rrtm_reliq(0,k),60.0_wp)
	790	ENDIF
	791	ELSE
	792	rrtm_icld = 0
	793	ENDIF
	794	ENDDO
	795
	796	!
	797	!-- Set surface temperature
	798	rrtm_tsfc = pt(nzb,j,i) * (surface_pressure / 1000.0_wp )**0.286_wp
	799
	800	IF ( lw_radiation ) THEN
	801	CALL rrtmg_lw( 1, nzt_rad , rrtm_icld , rrtm_idrv ,&
	802	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
	803	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
	804	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_cfc11vmr ,&
	805	rrtm_cfc12vmr , rrtm_cfc22vmr, rrtm_ccl4vmr , rrtm_emis ,&
	806	rrtm_inflglw , rrtm_iceflglw, rrtm_liqflglw, rrtm_cldfr ,&
	807	rrtm_lw_taucld , rrtm_cicewp , rrtm_cliqwp , rrtm_reice ,&
	808	rrtm_reliq , rrtm_lw_tauaer, &
	809	rrtm_lwuflx , rrtm_lwdflx , rrtm_lwhr , &
	810	rrtm_lwuflxc , rrtm_lwdflxc , rrtm_lwhrc )
	811
	812	DO k = nzb, nzt+1
	813	rad_lw_in(k,j,i) = rrtm_lwdflx(0,k)
	814	rad_lw_out(k,j,i) = rrtm_lwuflx(0,k)
	815	ENDDO
	816
	817
	818	ENDIF
	819
	820	IF ( sw_radiation .AND. sun_up ) THEN
	821	CALL rrtmg_sw( 1, nzt_rad , rrtm_icld , rrtm_iaer ,&
	822	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
	823	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
	824	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_asdir(:,j,i),&
	825	rrtm_asdif(:,j,i), rrtm_aldir(:,j,i), rrtm_aldif(:,j,i), zenith,&
	826	0.0_wp , day , solar_constant, rrtm_inflgsw,&
	827	rrtm_iceflgsw , rrtm_liqflgsw, rrtm_cldfr , rrtm_sw_taucld ,&
	828	rrtm_sw_ssacld , rrtm_sw_asmcld, rrtm_sw_fsfcld, rrtm_cicewp ,&
	829	rrtm_cliqwp , rrtm_reice , rrtm_reliq , rrtm_sw_tauaer ,&
	830	rrtm_sw_ssaaer , rrtm_sw_asmaer , rrtm_sw_ecaer , &
	831	rrtm_swuflx , rrtm_swdflx , rrtm_swhr , &
	832	rrtm_swuflxc , rrtm_swdflxc , rrtm_swhrc )
	833
	834	DO k = nzb, nzt+1
	835	rad_sw_in(k,j,i) = rrtm_swdflx(0,k)
	836	rad_sw_out(k,j,i) = rrtm_swuflx(0,k)
	837	ENDDO
	838	ENDIF
	839
	840	!
	841	!-- Calculate surface net radiation
	842	rad_net(j,i) = rad_sw_in(nzb,j,i) - rad_sw_out(nzb,j,i) &
	843	+ rad_lw_in(nzb,j,i) - rad_lw_out(nzb,j,i)
	844
	845	ENDDO
	846	ENDDO
	847
	848	CALL exchange_horiz( rad_lw_in, nbgp )
	849	CALL exchange_horiz( rad_lw_out, nbgp )
	850	CALL exchange_horiz( rad_sw_in, nbgp )
	851	CALL exchange_horiz( rad_sw_out, nbgp )
	852	CALL exchange_horiz_2d( rad_net, nbgp )
	853	#endif
	854
	855	END SUBROUTINE radiation_rrtmg
	856
	857
	858	!------------------------------------------------------------------------------!
	859	! Description:
	860	! ------------
	861	!-- Calculate the cosine of the zenith angle (variable is called zenith)
	862	!------------------------------------------------------------------------------!
	863	SUBROUTINE calc_zenith
	864
	865	IMPLICIT NONE
	866
	867	REAL(wp) :: declination, & !: solar declination angle
	868	hour_angle !: solar hour angle
	869	!
[1496]	870	!-- Calculate current day and time based on the initial values and simulation
	871	!-- time
[1585]	872	day = day_init + INT(FLOOR( (time_utc_init + time_since_reference_point) &
	873	/ 86400.0_wp ), KIND=iwp)
[1496]	874	time_utc = MOD((time_utc_init + time_since_reference_point), 86400.0_wp)
	875
	876
	877	!
	878	!-- Calculate solar declination and hour angle
[1585]	879	declination = ASIN( decl_1 * SIN(decl_2 * REAL(day, KIND=wp) - decl_3) )
[1496]	880	hour_angle = 2.0_wp * pi * (time_utc / 86400.0_wp) + lon - pi
	881
	882	!
	883	!-- Calculate zenith angle
[1585]	884	zenith(0) = SIN(lat) * SIN(declination) + COS(lat) * COS(declination) &
[1496]	885	* COS(hour_angle)
[1585]	886	zenith(0) = MAX(0.0_wp,zenith(0))
[1496]	887
	888	!
[1585]	889	!-- Check if the sun is up (otheriwse shortwave calculations can be skipped)
	890	IF ( zenith(0) .GT. 0.0_wp ) THEN
	891	sun_up = .TRUE.
	892	ELSE
	893	sun_up = .FALSE.
	894	END IF
[1496]	895
[1585]	896	END SUBROUTINE calc_zenith
	897
	898	#if defined ( __rrtmg )
	899	!------------------------------------------------------------------------------!
	900	! Description:
	901	! ------------
	902	!-- Calculates surface albedo components based on Briegleb (1992) and
	903	!-- Briegleb et al. (1986)
	904	!------------------------------------------------------------------------------!
	905	SUBROUTINE calc_albedo
	906
	907	IMPLICIT NONE
	908
	909	IF ( sun_up ) THEN
[1496]	910	!
[1585]	911	!-- Ocean
	912	IF ( albedo_type == 1 ) THEN
	913	rrtm_aldir(0,:,:) = 0.026_wp / ( zenith(0)**1.7_wp + 0.065_wp ) &
	914	+ 0.15_wp * ( zenith(0) - 0.1_wp ) &
	915	* ( zenith(0) - 0.5_wp ) &
	916	* ( zenith(0) - 1.0_wp )
	917	rrtm_asdir(0,:,:) = rrtm_aldir(0,:,:)
	918	!
	919	!-- Snow
	920	ELSEIF ( albedo_type == 16 ) THEN
	921	IF ( zenith(0) < 0.5_wp ) THEN
	922	rrtm_aldir(0,:,:) = 0.5_wp * (1.0_wp - aldif) &
	923	* ( 3.0_wp / (1.0_wp + 4.0_wp &
	924	* zenith(0))) - 1.0_wp
	925	rrtm_asdir(0,:,:) = 0.5_wp * (1.0_wp - asdif) &
	926	* ( 3.0_wp / (1.0_wp + 4.0_wp &
	927	* zenith(0))) - 1.0_wp
[1496]	928
[1585]	929	rrtm_aldir(0,:,:) = MIN(0.98_wp, rrtm_aldir(0,:,:))
	930	rrtm_asdir(0,:,:) = MIN(0.98_wp, rrtm_asdir(0,:,:))
	931	ELSE
	932	rrtm_aldir(0,:,:) = aldif
	933	rrtm_asdir(0,:,:) = asdif
	934	ENDIF
[1496]	935	!
[1585]	936	!-- Sea ice
	937	ELSEIF ( albedo_type == 15 ) THEN
	938	rrtm_aldir(0,:,:) = aldif
	939	rrtm_asdir(0,:,:) = asdif
	940	!
	941	!-- Land surfaces
	942	ELSE
	943	SELECT CASE ( albedo_type )
[1496]	944
[1585]	945	!
	946	!-- Surface types with strong zenith dependence
	947	CASE ( 1, 2, 3, 4, 11, 12, 13 )
	948	rrtm_aldir(0,:,:) = aldif * 1.4_wp / &
	949	(1.0_wp + 0.8_wp * zenith(0))
	950	rrtm_asdir(0,:,:) = asdif * 1.4_wp / &
	951	(1.0_wp + 0.8_wp * zenith(0))
	952	!
	953	!-- Surface types with weak zenith dependence
	954	CASE ( 5, 6, 7, 8, 9, 10, 14 )
	955	rrtm_aldir(0,:,:) = aldif * 1.1_wp / &
	956	(1.0_wp + 0.2_wp * zenith(0))
	957	rrtm_asdir(0,:,:) = asdif * 1.1_wp / &
	958	(1.0_wp + 0.2_wp * zenith(0))
[1496]	959
[1585]	960	CASE DEFAULT
	961
	962	END SELECT
	963	ENDIF
	964	!
	965	!-- Diffusive albedo is taken from Table 2
	966	rrtm_aldif(0,:,:) = aldif
	967	rrtm_asdif(0,:,:) = asdif
	968
	969	ELSE
	970
	971	rrtm_aldir(0,:,:) = 0.0_wp
	972	rrtm_asdir(0,:,:) = 0.0_wp
	973	rrtm_aldif(0,:,:) = 0.0_wp
	974	rrtm_asdif(0,:,:) = 0.0_wp
	975	ENDIF
	976	END SUBROUTINE calc_albedo
	977
	978	!------------------------------------------------------------------------------!
	979	! Description:
	980	! ------------
	981	!-- Read sounding data (pressure and temperature) from RADIATION_DATA.
	982	!------------------------------------------------------------------------------!
	983	SUBROUTINE read_sounding_data
	984
	985	USE netcdf_control
	986
	987	IMPLICIT NONE
	988
	989	INTEGER(iwp) :: id, id_dim_zrad, id_var, k, nz_snd, nz_snd_start, nz_snd_end
	990
	991	REAL(wp) :: t_surface
	992
	993	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd_tmp, t_snd_tmp
	994
	995	!
	996	!-- In case of updates, deallocate arrays first (sufficient to check one
	997	!-- array as the others are automatically allocated). This is required
	998	!-- because nzt_rad might change during the update
	999	IF ( ALLOCATED ( hyp_snd ) ) THEN
	1000	DEALLOCATE( hyp_snd )
	1001	DEALLOCATE( t_snd )
	1002	DEALLOCATE( q_snd )
	1003	DEALLOCATE ( rrtm_play )
	1004	DEALLOCATE ( rrtm_plev )
	1005	DEALLOCATE ( rrtm_tlay )
	1006	DEALLOCATE ( rrtm_tlev )
	1007	DEALLOCATE ( rrtm_h2ovmr )
	1008	DEALLOCATE ( rrtm_cicewp )
	1009	DEALLOCATE ( rrtm_cldfr )
	1010	DEALLOCATE ( rrtm_cliqwp )
	1011	DEALLOCATE ( rrtm_reice )
	1012	DEALLOCATE ( rrtm_reliq )
	1013	DEALLOCATE ( rrtm_lw_taucld )
	1014	DEALLOCATE ( rrtm_lw_tauaer )
	1015	DEALLOCATE ( rrtm_lwdflx )
	1016	DEALLOCATE ( rrtm_lwuflx )
	1017	DEALLOCATE ( rrtm_lwhr )
	1018	DEALLOCATE ( rrtm_lwuflxc )
	1019	DEALLOCATE ( rrtm_lwdflxc )
	1020	DEALLOCATE ( rrtm_lwhrc )
	1021	DEALLOCATE ( rrtm_sw_taucld )
	1022	DEALLOCATE ( rrtm_sw_ssacld )
	1023	DEALLOCATE ( rrtm_sw_asmcld )
	1024	DEALLOCATE ( rrtm_sw_fsfcld )
	1025	DEALLOCATE ( rrtm_sw_tauaer )
	1026	DEALLOCATE ( rrtm_sw_ssaaer )
	1027	DEALLOCATE ( rrtm_sw_asmaer )
	1028	DEALLOCATE ( rrtm_sw_ecaer )
	1029	DEALLOCATE ( rrtm_swdflx )
	1030	DEALLOCATE ( rrtm_swuflx )
	1031	DEALLOCATE ( rrtm_swhr )
	1032	DEALLOCATE ( rrtm_swuflxc )
	1033	DEALLOCATE ( rrtm_swdflxc )
	1034	DEALLOCATE ( rrtm_swhrc )
	1035	ENDIF
	1036
	1037	!
	1038	!-- Open file for reading
	1039	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
	1040	CALL handle_netcdf_error( 'netcdf', 549 )
	1041
	1042	!
	1043	!-- Inquire dimension of z axis and save in nz_snd
	1044	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim_zrad )
	1045	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim_zrad, len = nz_snd )
	1046	CALL handle_netcdf_error( 'netcdf', 551 )
	1047
	1048	!
	1049	! !-- Allocate temporary array for storing pressure data
	1050	ALLOCATE( hyp_snd_tmp(nzb+1:nz_snd) )
	1051	hyp_snd_tmp = 0.0_wp
	1052
	1053
	1054	!-- Read pressure from file
	1055	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
	1056	nc_stat = NF90_GET_VAR( id, id_var, hyp_snd_tmp(:), start = (/1/), &
	1057	count = (/nz_snd/) )
	1058	CALL handle_netcdf_error( 'netcdf', 552 )
	1059
	1060	!
	1061	!-- Allocate temporary array for storing temperature data
	1062	ALLOCATE( t_snd_tmp(nzb+1:nz_snd) )
	1063	t_snd_tmp = 0.0_wp
	1064
	1065	!
	1066	!-- Read temperature from file
	1067	nc_stat = NF90_INQ_VARID( id, "ReferenceTemperature", id_var )
	1068	nc_stat = NF90_GET_VAR( id, id_var, t_snd_tmp(:), start = (/1/), &
	1069	count = (/nz_snd/) )
	1070	CALL handle_netcdf_error( 'netcdf', 553 )
	1071
	1072	!
	1073	!-- Calculate start of sounding data
	1074	nz_snd_start = nz_snd + 1
	1075	nz_snd_end = nz_snd_end
	1076
	1077	!
	1078	!-- Start filling vertical dimension at 10hPa above the model domain (hyp is
	1079	!-- in Pa, hyp_snd in hPa).
	1080	DO k = 1, nz_snd
	1081	IF ( hyp_snd_tmp(k) .LT. (hyp(nzt+1) - 1000.0_wp) * 0.01_wp ) THEN
	1082	nz_snd_start = k
	1083	EXIT
	1084	END IF
	1085	END DO
	1086
	1087	IF ( nz_snd_start .LE. nz_snd ) THEN
	1088	nz_snd_end = nz_snd - 1
	1089	END IF
	1090
	1091
	1092	!
	1093	!-- Calculate of total grid points for RRTMG calculations
	1094	nzt_rad = nzt + nz_snd_end - nz_snd_start + 2
	1095
	1096	!
	1097	!-- Save data above LES domain in hyp_snd, t_snd and q_snd
	1098	!-- Note: q_snd_tmp is not calculated at the moment (dry residual atmosphere)
	1099	ALLOCATE( hyp_snd(nzb+1:nzt_rad) )
	1100	ALLOCATE( t_snd(nzb+1:nzt_rad) )
	1101	ALLOCATE( q_snd(nzb+1:nzt_rad) )
	1102	hyp_snd = 0.0_wp
	1103	t_snd = 0.0_wp
	1104	q_snd = 0.0_wp
	1105
	1106	hyp_snd(nzt+2:nzt_rad) = hyp_snd_tmp(nz_snd_start:nz_snd_end)
	1107	t_snd(nzt+2:nzt_rad) = t_snd_tmp(nz_snd_start:nz_snd_end)
	1108
	1109	DEALLOCATE ( hyp_snd_tmp )
	1110	DEALLOCATE ( t_snd_tmp )
	1111
	1112	nc_stat = NF90_CLOSE( id )
	1113
	1114	!
	1115	!-- Calculate pressure levels on zu and zw grid. Sounding data is added at
	1116	!-- top of the LES domain. This routine does not consider horizontal or
	1117	!-- vertical variability of pressure and temperature
	1118	ALLOCATE ( rrtm_play(0:0,nzb+1:nzt_rad+1) )
	1119	ALLOCATE ( rrtm_plev(0:0,nzb+1:nzt_rad+2) )
	1120
	1121	t_surface = pt_surface * (surface_pressure / 1000.0_wp )**0.286_wp
	1122	DO k = nzb+1, nzt+1
	1123	rrtm_play(0,k) = hyp(k) * 0.01_wp
	1124	rrtm_plev(0,k) = surface_pressure * ( (t_surface - g/cp * zw(k-1)) / &
	1125	t_surface )**(1.0_wp/0.286_wp)
	1126	ENDDO
	1127
	1128	DO k = nzt+2, nzt_rad
	1129	rrtm_play(0,k) = hyp_snd(k)
	1130	rrtm_plev(0,k) = 0.5_wp * ( rrtm_play(0,k) + rrtm_play(0,k-1) )
	1131	ENDDO
	1132	rrtm_plev(0,nzt_rad+1) = MAX( 0.5 * hyp_snd(nzt_rad), &
	1133	1.5 * hyp_snd(nzt_rad) &
	1134	- 0.5 * hyp_snd(nzt_rad-1) )
	1135	rrtm_plev(0,nzt_rad+2) = MIN( 1.0E-4_wp, &
	1136	0.25_wp * rrtm_plev(0,nzt_rad+1) )
	1137
	1138	rrtm_play(0,nzt_rad+1) = 0.5 * rrtm_plev(0,nzt_rad+1)
	1139
	1140	!
	1141	!-- Calculate temperature/humidity levels at top of the LES domain.
	1142	!-- Currently, the temperature is taken from sounding data (might lead to a
	1143	!-- temperature jump at interface. To do: Humidity is currently not
	1144	!-- calculated above the LES domain.
	1145	ALLOCATE ( rrtm_tlay(0:0,nzb+1:nzt_rad+1) )
	1146	ALLOCATE ( rrtm_tlev(0:0,nzb+1:nzt_rad+2) )
	1147	ALLOCATE ( rrtm_h2ovmr(0:0,nzb+1:nzt_rad+1) )
	1148
	1149	DO k = nzt+8, nzt_rad
	1150	rrtm_tlay(0,k) = t_snd(k)
	1151	rrtm_h2ovmr(0,k) = q_snd(k)
	1152	ENDDO
	1153	rrtm_tlay(0,nzt_rad+1) = 2.0_wp * rrtm_tlay(0,nzt_rad) &
	1154	- rrtm_tlay(0,nzt_rad-1)
	1155	DO k = nzt+9, nzt_rad+1
	1156	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) &
	1157	- rrtm_tlay(0,k-1)) &
	1158	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
	1159	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
	1160	ENDDO
	1161	rrtm_h2ovmr(0,nzt_rad+1) = rrtm_h2ovmr(0,nzt_rad)
	1162
	1163	rrtm_tlev(0,nzt_rad+2) = 2.0_wp * rrtm_tlay(0,nzt_rad+1) &
	1164	- rrtm_tlev(0,nzt_rad)
	1165	!
	1166	!-- Allocate remaining RRTMG arrays
	1167	ALLOCATE ( rrtm_cicewp(0:0,nzb+1:nzt_rad+1) )
	1168	ALLOCATE ( rrtm_cldfr(0:0,nzb+1:nzt_rad+1) )
	1169	ALLOCATE ( rrtm_cliqwp(0:0,nzb+1:nzt_rad+1) )
	1170	ALLOCATE ( rrtm_reice(0:0,nzb+1:nzt_rad+1) )
	1171	ALLOCATE ( rrtm_reliq(0:0,nzb+1:nzt_rad+1) )
	1172	ALLOCATE ( rrtm_lw_taucld(1:nbndlw+1,0:0,nzb+1:nzt_rad+1) )
	1173	ALLOCATE ( rrtm_lw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndlw+1) )
	1174	ALLOCATE ( rrtm_sw_taucld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1175	ALLOCATE ( rrtm_sw_ssacld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1176	ALLOCATE ( rrtm_sw_asmcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1177	ALLOCATE ( rrtm_sw_fsfcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1178	ALLOCATE ( rrtm_sw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1179	ALLOCATE ( rrtm_sw_ssaaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1180	ALLOCATE ( rrtm_sw_asmaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1181	ALLOCATE ( rrtm_sw_ecaer(0:0,nzb+1:nzt_rad+1,1:naerec+1) )
	1182
	1183	!
	1184	!-- The ice phase is currently not considered in PALM
	1185	rrtm_cicewp = 0.0_wp
	1186	rrtm_reice = 0.0_wp
	1187
	1188	!
	1189	!-- Set other parameters (move to NAMELIST parameters in the future)
	1190	rrtm_lw_tauaer = 0.0_wp
	1191	rrtm_lw_taucld = 0.0_wp
	1192	rrtm_sw_taucld = 0.0_wp
	1193	rrtm_sw_ssacld = 0.0_wp
	1194	rrtm_sw_asmcld = 0.0_wp
	1195	rrtm_sw_fsfcld = 0.0_wp
	1196	rrtm_sw_tauaer = 0.0_wp
	1197	rrtm_sw_ssaaer = 0.0_wp
	1198	rrtm_sw_asmaer = 0.0_wp
	1199	rrtm_sw_ecaer = 0.0_wp
	1200
	1201
	1202	ALLOCATE ( rrtm_swdflx(0:0,nzb:nzt_rad+1) )
	1203	ALLOCATE ( rrtm_swuflx(0:0,nzb:nzt_rad+1) )
	1204	ALLOCATE ( rrtm_swhr(0:0,nzb+1:nzt_rad+1) )
	1205	ALLOCATE ( rrtm_swuflxc(0:0,nzb:nzt_rad+1) )
	1206	ALLOCATE ( rrtm_swdflxc(0:0,nzb:nzt_rad+1) )
	1207	ALLOCATE ( rrtm_swhrc(0:0,nzb+1:nzt_rad+1) )
	1208
	1209	rrtm_swdflx = 0.0_wp
	1210	rrtm_swuflx = 0.0_wp
	1211	rrtm_swhr = 0.0_wp
	1212	rrtm_swuflxc = 0.0_wp
	1213	rrtm_swdflxc = 0.0_wp
	1214	rrtm_swhrc = 0.0_wp
	1215
	1216	ALLOCATE ( rrtm_lwdflx(0:0,nzb:nzt_rad+1) )
	1217	ALLOCATE ( rrtm_lwuflx(0:0,nzb:nzt_rad+1) )
	1218	ALLOCATE ( rrtm_lwhr(0:0,nzb+1:nzt_rad+1) )
	1219	ALLOCATE ( rrtm_lwuflxc(0:0,nzb:nzt_rad+1) )
	1220	ALLOCATE ( rrtm_lwdflxc(0:0,nzb:nzt_rad+1) )
	1221	ALLOCATE ( rrtm_lwhrc(0:0,nzb+1:nzt_rad+1) )
	1222
	1223	rrtm_lwdflx = 0.0_wp
	1224	rrtm_lwuflx = 0.0_wp
	1225	rrtm_lwhr = 0.0_wp
	1226	rrtm_lwuflxc = 0.0_wp
	1227	rrtm_lwdflxc = 0.0_wp
	1228	rrtm_lwhrc = 0.0_wp
	1229
	1230
	1231	END SUBROUTINE read_sounding_data
	1232
	1233
	1234	!------------------------------------------------------------------------------!
	1235	! Description:
	1236	! ------------
	1237	!-- Read trace gas data from file
	1238	!------------------------------------------------------------------------------!
	1239	SUBROUTINE read_trace_gas_data
	1240
	1241	USE netcdf_control
	1242	USE rrsw_ncpar
	1243
	1244	IMPLICIT NONE
	1245
	1246	INTEGER(iwp), PARAMETER :: num_trace_gases = 9 !: number of trace gases
	1247
	1248	CHARACTER(LEN=5), DIMENSION(num_trace_gases), PARAMETER :: &
	1249	trace_names = (/'O3 ', 'CO2 ', 'CH4 ', 'N2O ', 'O2 ', &
	1250	'CFC11', 'CFC12', 'CFC22', 'CCL4 '/)
	1251
	1252	INTEGER(iwp) :: id, k, m, n, nabs, np, id_abs, id_dim, id_var
	1253
	1254	REAL(wp) :: p_mls_l, p_mls_u, p_wgt_l, p_wgt_u, p_mls_m
	1255
	1256
	1257	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_mls, & !: pressure levels for the absorbers
	1258	rrtm_play_tmp, & !: temporary array for pressure zu-levels
	1259	rrtm_plev_tmp, & !: temporary array for pressure zw-levels
	1260	trace_path_tmp !: temporary array for storing trace gas path data
	1261
	1262	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: trace_mls, & !: array for storing the absorber amounts
	1263	trace_mls_path, & !: array for storing trace gas path data
	1264	trace_mls_tmp !: temporary array for storing trace gas data
	1265
	1266
	1267	!
	1268	!-- In case of updates, deallocate arrays first (sufficient to check one
	1269	!-- array as the others are automatically allocated)
	1270	IF ( ALLOCATED ( rrtm_o3vmr ) ) THEN
	1271	DEALLOCATE ( rrtm_o3vmr )
	1272	DEALLOCATE ( rrtm_co2vmr )
	1273	DEALLOCATE ( rrtm_ch4vmr )
	1274	DEALLOCATE ( rrtm_n2ovmr )
	1275	DEALLOCATE ( rrtm_o2vmr )
	1276	DEALLOCATE ( rrtm_cfc11vmr )
	1277	DEALLOCATE ( rrtm_cfc12vmr )
	1278	DEALLOCATE ( rrtm_cfc22vmr )
	1279	DEALLOCATE ( rrtm_ccl4vmr )
	1280	ENDIF
	1281
	1282	!
	1283	!-- Allocate trace gas profiles
	1284	ALLOCATE ( rrtm_o3vmr(0:0,1:nzt_rad+1) )
	1285	ALLOCATE ( rrtm_co2vmr(0:0,1:nzt_rad+1) )
	1286	ALLOCATE ( rrtm_ch4vmr(0:0,1:nzt_rad+1) )
	1287	ALLOCATE ( rrtm_n2ovmr(0:0,1:nzt_rad+1) )
	1288	ALLOCATE ( rrtm_o2vmr(0:0,1:nzt_rad+1) )
	1289	ALLOCATE ( rrtm_cfc11vmr(0:0,1:nzt_rad+1) )
	1290	ALLOCATE ( rrtm_cfc12vmr(0:0,1:nzt_rad+1) )
	1291	ALLOCATE ( rrtm_cfc22vmr(0:0,1:nzt_rad+1) )
	1292	ALLOCATE ( rrtm_ccl4vmr(0:0,1:nzt_rad+1) )
	1293
	1294	!
	1295	!-- Open file for reading
	1296	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
	1297	CALL handle_netcdf_error( 'netcdf', 549 )
	1298	!
	1299	!-- Inquire dimension ids and dimensions
	1300	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim )
	1301	CALL handle_netcdf_error( 'netcdf', 550 )
	1302	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = np)
	1303	CALL handle_netcdf_error( 'netcdf', 550 )
	1304
	1305	nc_stat = NF90_INQ_DIMID( id, "Absorber", id_dim )
	1306	CALL handle_netcdf_error( 'netcdf', 550 )
	1307	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = nabs )
	1308	CALL handle_netcdf_error( 'netcdf', 550 )
	1309
	1310
	1311	!
	1312	!-- Allocate pressure, and trace gas arrays
	1313	ALLOCATE( p_mls(1:np) )
	1314	ALLOCATE( trace_mls(1:num_trace_gases,1:np) )
	1315	ALLOCATE( trace_mls_tmp(1:nabs,1:np) )
	1316
	1317
	1318	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
	1319	CALL handle_netcdf_error( 'netcdf', 550 )
	1320	nc_stat = NF90_GET_VAR( id, id_var, p_mls )
	1321	CALL handle_netcdf_error( 'netcdf', 550 )
	1322
	1323	nc_stat = NF90_INQ_VARID( id, "AbsorberAmountMLS", id_var )
	1324	CALL handle_netcdf_error( 'netcdf', 550 )
	1325	nc_stat = NF90_GET_VAR( id, id_var, trace_mls_tmp )
	1326	CALL handle_netcdf_error( 'netcdf', 550 )
	1327
	1328
	1329	!
	1330	!-- Write absorber amounts (mls) to trace_mls
	1331	DO n = 1, num_trace_gases
	1332	CALL getAbsorberIndex( TRIM( trace_names(n) ), id_abs )
	1333
	1334	trace_mls(n,1:np) = trace_mls_tmp(id_abs,1:np)
	1335
	1336	!
	1337	!-- Replace missing values by zero
	1338	WHERE ( trace_mls(n,:) > 2.0_wp )
	1339	trace_mls(n,:) = 0.0_wp
	1340	END WHERE
	1341	END DO
	1342
	1343	DEALLOCATE ( trace_mls_tmp )
	1344
	1345	nc_stat = NF90_CLOSE( id )
	1346	CALL handle_netcdf_error( 'netcdf', 551 )
	1347
	1348	!
	1349	!-- Add extra pressure level for calculations of the trace gas paths
	1350	ALLOCATE ( rrtm_play_tmp(1:nzt_rad+1) )
	1351	ALLOCATE ( rrtm_plev_tmp(1:nzt_rad+2) )
	1352
	1353	rrtm_play_tmp(1:nzt_rad) = rrtm_play(0,1:nzt_rad)
	1354	rrtm_plev_tmp(1:nzt_rad+1) = rrtm_plev(0,1:nzt_rad+1)
	1355	rrtm_play_tmp(nzt_rad+1) = rrtm_plev(0,nzt_rad+1) * 0.5_wp
	1356	rrtm_plev_tmp(nzt_rad+2) = MIN( 1.0E-4_wp, 0.25_wp &
	1357	* rrtm_plev(0,nzt_rad+1) )
	1358
	1359	!
	1360	!-- Calculate trace gas path (zero at surface) with interpolation to the
	1361	!-- sounding levels
	1362	ALLOCATE ( trace_mls_path(1:nzt_rad+2,1:num_trace_gases) )
	1363
	1364	trace_mls_path(nzb+1,:) = 0.0_wp
	1365
	1366	DO k = nzb+2, nzt_rad+2
	1367	DO m = 1, num_trace_gases
	1368	trace_mls_path(k,m) = trace_mls_path(k-1,m)
	1369
	1370	!
	1371	!-- When the pressure level is higher than the trace gas pressure
	1372	!-- level, assume that
	1373	IF ( rrtm_plev_tmp(k-1) .GT. p_mls(1) ) THEN
	1374
	1375	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,1) &
	1376	* ( rrtm_plev_tmp(k-1) &
	1377	- MAX( p_mls(1), rrtm_plev_tmp(k) ) &
	1378	) / g
	1379	ENDIF
	1380
	1381	!
	1382	!-- Integrate for each sounding level from the contributing p_mls
	1383	!-- levels
	1384	DO n = 2, np
	1385	!
	1386	!-- Limit p_mls so that it is within the model level
	1387	p_mls_u = MIN( rrtm_plev_tmp(k-1), &
	1388	MAX( rrtm_plev_tmp(k), p_mls(n) ) )
	1389	p_mls_l = MIN( rrtm_plev_tmp(k-1), &
	1390	MAX( rrtm_plev_tmp(k), p_mls(n-1) ) )
	1391
	1392	IF ( p_mls_l .GT. p_mls_u ) THEN
	1393
	1394	!
	1395	!-- Calculate weights for interpolation
	1396	p_mls_m = 0.5_wp * (p_mls_l + p_mls_u)
	1397	p_wgt_u = (p_mls(n-1) - p_mls_m) / (p_mls(n-1) - p_mls(n))
	1398	p_wgt_l = (p_mls_m - p_mls(n)) / (p_mls(n-1) - p_mls(n))
	1399
	1400	!
	1401	!-- Add level to trace gas path
	1402	trace_mls_path(k,m) = trace_mls_path(k,m) &
	1403	+ ( p_wgt_u * trace_mls(m,n) &
	1404	+ p_wgt_l * trace_mls(m,n-1) ) &
	1405	* (p_mls_l + p_mls_u) / g
	1406	ENDIF
	1407	ENDDO
	1408
	1409	IF ( rrtm_plev_tmp(k) .LT. p_mls(np) ) THEN
	1410	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,np) &
	1411	* ( MIN( rrtm_plev_tmp(k-1), p_mls(np) ) &
	1412	- rrtm_plev_tmp(k) &
	1413	) / g
	1414	ENDIF
[1496]	1415	ENDDO
	1416	ENDDO
	1417
	1418
[1585]	1419	!
	1420	!-- Prepare trace gas path profiles
	1421	ALLOCATE ( trace_path_tmp(1:nzt_rad+1) )
[1496]	1422
[1585]	1423	DO m = 1, num_trace_gases
	1424
	1425	trace_path_tmp(1:nzt_rad+1) = ( trace_mls_path(2:nzt_rad+2,m) &
	1426	- trace_mls_path(1:nzt_rad+1,m) ) * g &
	1427	/ ( rrtm_plev_tmp(1:nzt_rad+1) &
	1428	- rrtm_plev_tmp(2:nzt_rad+2) )
	1429
	1430	!
	1431	!-- Save trace gas paths to the respective arrays
	1432	SELECT CASE ( TRIM( trace_names(m) ) )
	1433
	1434	CASE ( 'O3' )
	1435
	1436	rrtm_o3vmr(0,:) = trace_path_tmp(:)
	1437
	1438	CASE ( 'CO2' )
	1439
	1440	rrtm_co2vmr(0,:) = trace_path_tmp(:)
	1441
	1442	CASE ( 'CH4' )
	1443
	1444	rrtm_ch4vmr(0,:) = trace_path_tmp(:)
	1445
	1446	CASE ( 'N2O' )
	1447
	1448	rrtm_n2ovmr(0,:) = trace_path_tmp(:)
	1449
	1450	CASE ( 'O2' )
	1451
	1452	rrtm_o2vmr(0,:) = trace_path_tmp(:)
	1453
	1454	CASE ( 'CFC11' )
	1455
	1456	rrtm_cfc11vmr(0,:) = trace_path_tmp(:)
	1457
	1458	CASE ( 'CFC12' )
	1459
	1460	rrtm_cfc12vmr(0,:) = trace_path_tmp(:)
	1461
	1462	CASE ( 'CFC22' )
	1463
	1464	rrtm_cfc22vmr(0,:) = trace_path_tmp(:)
	1465
	1466	CASE ( 'CCL4' )
	1467
	1468	rrtm_ccl4vmr(0,:) = trace_path_tmp(:)
	1469
	1470	CASE DEFAULT
	1471
	1472	END SELECT
	1473
	1474	ENDDO
	1475
	1476	DEALLOCATE ( trace_path_tmp )
	1477	DEALLOCATE ( trace_mls_path )
	1478	DEALLOCATE ( rrtm_play_tmp )
	1479	DEALLOCATE ( rrtm_plev_tmp )
	1480	DEALLOCATE ( trace_mls )
	1481	DEALLOCATE ( p_mls )
	1482
	1483	END SUBROUTINE read_trace_gas_data
	1484
	1485	#endif
	1486
	1487
[1551]	1488	!------------------------------------------------------------------------------!
	1489	! Description:
	1490	! ------------
[1585]	1491	!-- Calculate temperature tendency due to radiative cooling/heating.
	1492	!-- Cache-optimized version.
[1551]	1493	!------------------------------------------------------------------------------!
[1585]	1494	SUBROUTINE radiation_tendency_ij ( i, j, tend )
[1496]	1495
[1585]	1496	USE arrays_3d, &
	1497	ONLY: dzw
[1496]	1498
[1585]	1499	USE cloud_parameters, &
	1500	ONLY: pt_d_t, cp
[1551]	1501
[1585]	1502	USE control_parameters, &
	1503	ONLY: rho_surface
	1504
	1505	IMPLICIT NONE
	1506
	1507	INTEGER(iwp) :: i, j, k
	1508
	1509	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend
	1510
	1511	#if defined ( __rrtmg )
	1512
	1513	REAL(wp) :: rad_sw_net_l, rad_sw_net_u, rad_lw_net_l, rad_lw_net_u
	1514
	1515	rad_sw_net_l = 0.0_wp
	1516	rad_sw_net_u = 0.0_wp
	1517	rad_lw_net_l = 0.0_wp
	1518	rad_lw_net_u = 0.0_wp
	1519
	1520	!
	1521	!-- Calculate radiative flux divergence
	1522	DO k = nzb+1, nzt+1
	1523
	1524	rad_sw_net_l = rad_sw_in(k-1,j,i) - rad_sw_out(k-1,j,i)
	1525	rad_sw_net_u = rad_sw_in(k,j,i) - rad_sw_out(k,j,i)
	1526	rad_lw_net_l = rad_lw_in(k-1,j,i) - rad_lw_out(k-1,j,i)
	1527	rad_lw_net_u = rad_lw_in(k,j,i) - rad_lw_out(k,j,i)
	1528
	1529	tend(k,j,i) = tend(k,j,i) + ( rad_sw_net_u - rad_sw_net_l &
	1530	+ rad_lw_net_u - rad_lw_net_l ) / &
	1531	( dzw(k) * cp * rho_surface ) * pt_d_t(k)
	1532	ENDDO
	1533
	1534	#endif
	1535
	1536	END SUBROUTINE radiation_tendency_ij
	1537
	1538
[1551]	1539	!------------------------------------------------------------------------------!
	1540	! Description:
	1541	! ------------
[1585]	1542	!-- Calculate temperature tendency due to radiative cooling/heating.
	1543	!-- Vector-optimized version
[1551]	1544	!------------------------------------------------------------------------------!
[1585]	1545	SUBROUTINE radiation_tendency ( tend )
[1551]	1546
[1585]	1547	USE arrays_3d, &
	1548	ONLY: dzw
[1551]	1549
[1585]	1550	USE cloud_parameters, &
	1551	ONLY: pt_d_t, cp
[1551]	1552
[1585]	1553	USE indices, &
	1554	ONLY: nxl, nxr, nyn, nys
	1555
	1556	USE control_parameters, &
	1557	ONLY: rho_surface
	1558
	1559	IMPLICIT NONE
	1560
	1561	INTEGER(iwp) :: i, j, k
	1562
	1563	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend
	1564
	1565	#if defined ( __rrtmg )
	1566
	1567	REAL(wp) :: rad_sw_net_l, rad_sw_net_u, rad_lw_net_l, rad_lw_net_u
	1568
	1569	rad_sw_net_l = 0.0_wp
	1570	rad_sw_net_u = 0.0_wp
	1571	rad_lw_net_l = 0.0_wp
	1572	rad_lw_net_u = 0.0_wp
	1573
	1574	DO i = nxl, nxr
	1575	DO j = nys, nyn
	1576
	1577	!
	1578	!-- Calculate radiative flux divergence
	1579	DO k = nzb+1, nzt+1
	1580
	1581	rad_sw_net_l = rad_sw_in(k-1,j,i) - rad_sw_out(k-1,j,i)
	1582	rad_sw_net_u = rad_sw_in(k ,j,i) - rad_sw_out(k ,j,i)
	1583	rad_lw_net_l = rad_lw_in(k-1,j,i) - rad_lw_out(k-1,j,i)
	1584	rad_lw_net_u = rad_lw_in(k ,j,i) - rad_lw_out(k ,j,i)
	1585
	1586	tend(k,j,i) = tend(k,j,i) + ( rad_sw_net_u - rad_sw_net_l &
	1587	+ rad_lw_net_u - rad_lw_net_l ) / &
	1588	( dzw(k) * cp * rho_surface ) * pt_d_t(k)
	1589	ENDDO
	1590	ENDDO
	1591	ENDDO
	1592	#endif
	1593
	1594	END SUBROUTINE radiation_tendency
	1595
[1496]	1596	END MODULE radiation_model_mod

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