Home

Context Navigation

source: palm/trunk/SOURCE/radiation_model.f90 @ 1757

Last change on this file since 1757 was 1757, checked in by maronga, 8 years ago
some changes in land surface model, radiation model, nudging and some minor updates
Property svn:keywords set to `Id`
File size: 69.0 KB

Rev	Line
[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	! -----------------
[1757]	21	! Added parameter unscheduled_radiation_calls. Bugfix: interpolation of sounding
	22	! profiles for pressure and temperature above the LES domain.
[1496]	23	!
	24	! Former revisions:
	25	! -----------------
	26	! $Id: radiation_model.f90 1757 2016-02-22 15:49:32Z maronga $
	27	!
[1710]	28	! 1709 2015-11-04 14:47:01Z maronga
	29	! Bugfix: set initial value for rrtm_lwuflx_dt to zero, small formatting
	30	! corrections
	31	!
[1702]	32	! 1701 2015-11-02 07:43:04Z maronga
	33	! Bugfixes: wrong index for output of timeseries, setting of nz_snd_end
	34	!
[1692]	35	! 1691 2015-10-26 16:17:44Z maronga
	36	! Added option for spin-up runs without radiation (skip_time_do_radiation). Bugfix
	37	! in calculation of pressure profiles. Bugfix in calculation of trace gas profiles.
	38	! Added output of radiative heating rates.
	39	!
[1683]	40	! 1682 2015-10-07 23:56:08Z knoop
	41	! Code annotations made doxygen readable
	42	!
[1607]	43	! 1606 2015-06-29 10:43:37Z maronga
	44	! Added preprocessor directive __netcdf to allow for compiling without netCDF.
	45	! Note, however, that RRTMG cannot be used without netCDF.
	46	!
[1591]	47	! 1590 2015-05-08 13:56:27Z maronga
	48	! Bugfix: definition of character strings requires same length for all elements
	49	!
[1588]	50	! 1587 2015-05-04 14:19:01Z maronga
	51	! Added albedo class for snow
	52	!
[1586]	53	! 1585 2015-04-30 07:05:52Z maronga
	54	! Added support for RRTMG
	55	!
[1572]	56	! 1571 2015-03-12 16:12:49Z maronga
	57	! Added missing KIND attribute. Removed upper-case variable names
	58	!
[1552]	59	! 1551 2015-03-03 14:18:16Z maronga
	60	! Added support for data output. Various variables have been renamed. Added
	61	! interface for different radiation schemes (currently: clear-sky, constant, and
	62	! RRTM (not yet implemented).
	63	!
[1497]	64	! 1496 2014-12-02 17:25:50Z maronga
	65	! Initial revision
	66	!
[1496]	67	!
	68	! Description:
	69	! ------------
[1682]	70	!> Radiation models and interfaces
	71	!> @todo move variable definitions used in init_radiation only to the subroutine
	72	!> as they are no longer required after initialization.
	73	!> @todo Output of full column vertical profiles used in RRTMG
	74	!> @todo Output of other rrtm arrays (such as volume mixing ratios)
	75	!> @todo Adapt for use with topography
	76	!>
	77	!> @note Many variables have a leading dummy dimension (0:0) in order to
	78	!> match the assume-size shape expected by the RRTMG model.
[1496]	79	!------------------------------------------------------------------------------!
[1682]	80	MODULE radiation_model_mod
	81
[1496]	82
	83	USE arrays_3d, &
[1691]	84	ONLY: dzw, hyp, pt, q, ql, zw
[1496]	85
[1585]	86	USE cloud_parameters, &
[1691]	87	ONLY: cp, l_d_cp, nc_const, rho_l, sigma_gc
[1585]	88
	89	USE constants, &
	90	ONLY: pi
	91
[1496]	92	USE control_parameters, &
[1585]	93	ONLY: cloud_droplets, cloud_physics, g, initializing_actions, &
[1691]	94	large_scale_forcing, lsf_surf, phi, pt_surface, rho_surface, &
[1585]	95	surface_pressure, time_since_reference_point
[1496]	96
	97	USE indices, &
[1585]	98	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb_s_inner, nzb, nzt
[1496]	99
	100	USE kinds
	101
[1606]	102	#if defined ( __netcdf )
[1585]	103	USE netcdf
[1606]	104	#endif
[1585]	105
[1551]	106	USE netcdf_control, &
	107	ONLY: dots_label, dots_num, dots_unit
[1496]	108
[1585]	109	#if defined ( __rrtmg )
	110	USE parrrsw, &
	111	ONLY: naerec, nbndsw
[1551]	112
[1585]	113	USE parrrtm, &
	114	ONLY: nbndlw
	115
	116	USE rrtmg_lw_init, &
	117	ONLY: rrtmg_lw_ini
	118
	119	USE rrtmg_sw_init, &
	120	ONLY: rrtmg_sw_ini
	121
	122	USE rrtmg_lw_rad, &
	123	ONLY: rrtmg_lw
	124
	125	USE rrtmg_sw_rad, &
	126	ONLY: rrtmg_sw
	127	#endif
	128
	129
	130
[1496]	131	IMPLICIT NONE
	132
[1585]	133	CHARACTER(10) :: radiation_scheme = 'clear-sky' ! 'constant', 'clear-sky', or 'rrtmg'
[1551]	134
[1585]	135	!
	136	!-- Predefined Land surface classes (albedo_type) after Briegleb (1992)
[1590]	137	CHARACTER(37), DIMENSION(0:16), PARAMETER :: albedo_type_name = (/ &
	138	'user defined ', & ! 0
	139	'ocean ', & ! 1
	140	'mixed farming, tall grassland ', & ! 2
	141	'tall/medium grassland ', & ! 3
	142	'evergreen shrubland ', & ! 4
	143	'short grassland/meadow/shrubland ', & ! 5
	144	'evergreen needleleaf forest ', & ! 6
	145	'mixed deciduous evergreen forest ', & ! 7
	146	'deciduous forest ', & ! 8
	147	'tropical evergreen broadleaved forest', & ! 9
	148	'medium/tall grassland/woodland ', & ! 10
	149	'desert, sandy ', & ! 11
	150	'desert, rocky ', & ! 12
	151	'tundra ', & ! 13
	152	'land ice ', & ! 14
	153	'sea ice ', & ! 15
	154	'snow ' & ! 16
[1585]	155	/)
[1496]	156
[1682]	157	INTEGER(iwp) :: albedo_type = 5, & !< Albedo surface type (default: short grassland)
	158	day, & !< current day of the year
	159	day_init = 172, & !< day of the year at model start (21/06)
	160	dots_rad = 0 !< starting index for timeseries output
[1496]	161
	162
	163
[1585]	164
	165
	166
[1757]	167	LOGICAL :: unscheduled_radiation_calls = .TRUE., & !< flag parameter indicating whether additional calls of the radiation code are allowed
	168	constant_albedo = .FALSE., & !< flag parameter indicating whether the albedo may change depending on zenith
	169	force_radiation_call = .FALSE., & !< flag parameter for unscheduled radiation calls
	170	lw_radiation = .TRUE., & !< flag parameter indicating whether longwave radiation shall be calculated
	171	radiation = .FALSE., & !< flag parameter indicating whether the radiation model is used
	172	sun_up = .TRUE., & !< flag parameter indicating whether the sun is up or down
	173	sw_radiation = .TRUE. !< flag parameter indicing whether shortwave radiation shall be calculated
[1585]	174
[1496]	175
[1691]	176	REAL(wp), PARAMETER :: d_seconds_hour = 0.000277777777778_wp, & !< inverse of seconds per hour (1/3600)
	177	d_hours_day = 0.0416666666667_wp, & !< inverse of hours per day (1/24)
	178	sigma_sb = 5.67037321E-8_wp, & !< Stefan-Boltzmann constant
	179	solar_constant = 1368.0_wp !< solar constant at top of atmosphere
[1585]	180
[1691]	181	REAL(wp) :: albedo = 9999999.9_wp, & !< NAMELIST alpha
	182	albedo_lw_dif = 9999999.9_wp, & !< NAMELIST aldif
	183	albedo_lw_dir = 9999999.9_wp, & !< NAMELIST aldir
	184	albedo_sw_dif = 9999999.9_wp, & !< NAMELIST asdif
	185	albedo_sw_dir = 9999999.9_wp, & !< NAMELIST asdir
	186	decl_1, & !< declination coef. 1
	187	decl_2, & !< declination coef. 2
	188	decl_3, & !< declination coef. 3
	189	dt_radiation = 0.0_wp, & !< radiation model timestep
	190	emissivity = 0.98_wp, & !< NAMELIST surface emissivity
	191	lambda = 0.0_wp, & !< longitude in degrees
	192	lon = 0.0_wp, & !< longitude in radians
	193	lat = 0.0_wp, & !< latitude in radians
	194	net_radiation = 0.0_wp, & !< net radiation at surface
	195	skip_time_do_radiation = 0.0_wp, & !< Radiation model is not called before this time
	196	sky_trans, & !< sky transmissivity
	197	time_radiation = 0.0_wp, & !< time since last call of radiation code
	198	time_utc, & !< current time in UTC
	199	time_utc_init = 43200.0_wp !< UTC time at model start (noon)
	200
[1682]	201	REAL(wp), DIMENSION(0:0) :: zenith !< solar zenith angle
[1585]	202
[1496]	203	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: &
[1682]	204	alpha, & !< surface broadband albedo (used for clear-sky scheme)
[1709]	205	rad_lw_out_change_0, & !< change in LW out due to change in surface temperature
[1682]	206	rad_net, & !< net radiation at the surface
	207	rad_net_av !< average of rad_net
[1496]	208
[1585]	209	!
	210	!-- Land surface albedos for solar zenith angle of 60Â° after Briegleb (1992)
	211	!-- (shortwave, longwave, broadband): sw, lw, bb,
[1587]	212	REAL(wp), DIMENSION(0:2,1:16), PARAMETER :: albedo_pars = RESHAPE( (/&
[1585]	213	0.06_wp, 0.06_wp, 0.06_wp, & ! 1
	214	0.09_wp, 0.28_wp, 0.19_wp, & ! 2
	215	0.11_wp, 0.33_wp, 0.23_wp, & ! 3
	216	0.11_wp, 0.33_wp, 0.23_wp, & ! 4
	217	0.14_wp, 0.34_wp, 0.25_wp, & ! 5
	218	0.06_wp, 0.22_wp, 0.14_wp, & ! 6
	219	0.06_wp, 0.27_wp, 0.17_wp, & ! 7
	220	0.06_wp, 0.31_wp, 0.19_wp, & ! 8
	221	0.06_wp, 0.22_wp, 0.14_wp, & ! 9
	222	0.06_wp, 0.28_wp, 0.18_wp, & ! 10
	223	0.35_wp, 0.51_wp, 0.43_wp, & ! 11
	224	0.24_wp, 0.40_wp, 0.32_wp, & ! 12
	225	0.10_wp, 0.27_wp, 0.19_wp, & ! 13
	226	0.90_wp, 0.65_wp, 0.77_wp, & ! 14
[1587]	227	0.90_wp, 0.65_wp, 0.77_wp, & ! 15
	228	0.95_wp, 0.70_wp, 0.82_wp & ! 16
	229	/), (/ 3, 16 /) )
[1496]	230
[1585]	231	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE, TARGET :: &
[1691]	232	rad_lw_cs_hr, & !< longwave clear sky radiation heating rate (K/s)
	233	rad_lw_cs_hr_av, & !< average of rad_lw_cs_hr
	234	rad_lw_hr, & !< longwave radiation heating rate (K/s)
	235	rad_lw_hr_av, & !< average of rad_sw_hr
	236	rad_lw_in, & !< incoming longwave radiation (W/m2)
	237	rad_lw_in_av, & !< average of rad_lw_in
	238	rad_lw_out, & !< outgoing longwave radiation (W/m2)
	239	rad_lw_out_av, & !< average of rad_lw_out
	240	rad_sw_cs_hr, & !< shortwave clear sky radiation heating rate (K/s)
	241	rad_sw_cs_hr_av, & !< average of rad_sw_cs_hr
	242	rad_sw_hr, & !< shortwave radiation heating rate (K/s)
	243	rad_sw_hr_av, & !< average of rad_sw_hr
[1682]	244	rad_sw_in, & !< incoming shortwave radiation (W/m2)
	245	rad_sw_in_av, & !< average of rad_sw_in
	246	rad_sw_out, & !< outgoing shortwave radiation (W/m2)
[1691]	247	rad_sw_out_av !< average of rad_sw_out
[1585]	248
[1691]	249
[1585]	250	!
	251	!-- Variables and parameters used in RRTMG only
	252	#if defined ( __rrtmg )
[1682]	253	CHARACTER(LEN=12) :: rrtm_input_file = "RAD_SND_DATA" !< name of the NetCDF input file (sounding data)
[1585]	254
	255
	256	!
	257	!-- Flag parameters for RRTMGS (should not be changed)
[1682]	258	INTEGER(iwp), PARAMETER :: rrtm_inflglw = 2, & !< flag for lw cloud optical properties (0,1,2)
	259	rrtm_iceflglw = 0, & !< flag for lw ice particle specifications (0,1,2,3)
	260	rrtm_liqflglw = 1, & !< flag for lw liquid droplet specifications
	261	rrtm_inflgsw = 2, & !< flag for sw cloud optical properties (0,1,2)
	262	rrtm_iceflgsw = 0, & !< flag for sw ice particle specifications (0,1,2,3)
	263	rrtm_liqflgsw = 1 !< flag for sw liquid droplet specifications
[1585]	264
	265	!
	266	!-- The following variables should be only changed with care, as this will
	267	!-- require further setting of some variables, which is currently not
	268	!-- implemented (aerosols, ice phase).
[1682]	269	INTEGER(iwp) :: nzt_rad, & !< upper vertical limit for radiation calculations
	270	rrtm_icld = 0, & !< cloud flag (0: clear sky column, 1: cloudy column)
	271	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]	272	rrtm_idrv = 1 !< longwave upward flux calculation option (0,1)
[1585]	273
[1682]	274	LOGICAL :: snd_exists = .FALSE. !< flag parameter to check whether a user-defined input files exists
[1585]	275
[1691]	276	REAL(wp), PARAMETER :: mol_mass_air_d_wv = 1.607793_wp !< molecular weight dry air / water vapor
[1585]	277
[1682]	278	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd, & !< hypostatic pressure from sounding data (hPa)
	279	q_snd, & !< specific humidity from sounding data (kg/kg) - dummy at the moment
	280	rrtm_tsfc, & !< dummy array for storing surface temperature
	281	t_snd !< actual temperature from sounding data (hPa)
[1585]	282
[1691]	283	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: aldif, & !< longwave diffuse albedo solar angle of 60Â°
	284	aldir, & !< longwave direct albedo solar angle of 60Â°
	285	asdif, & !< shortwave diffuse albedo solar angle of 60Â°
	286	asdir, & !< shortwave direct albedo solar angle of 60Â°
	287	rrtm_ccl4vmr, & !< CCL4 volume mixing ratio (g/mol)
	288	rrtm_cfc11vmr, & !< CFC11 volume mixing ratio (g/mol)
	289	rrtm_cfc12vmr, & !< CFC12 volume mixing ratio (g/mol)
	290	rrtm_cfc22vmr, & !< CFC22 volume mixing ratio (g/mol)
	291	rrtm_ch4vmr, & !< CH4 volume mixing ratio
	292	rrtm_cicewp, & !< in-cloud ice water path (g/mÂ²)
	293	rrtm_cldfr, & !< cloud fraction (0,1)
	294	rrtm_cliqwp, & !< in-cloud liquid water path (g/mÂ²)
	295	rrtm_co2vmr, & !< CO2 volume mixing ratio (g/mol)
	296	rrtm_emis, & !< surface emissivity (0-1)
	297	rrtm_h2ovmr, & !< H2O volume mixing ratio
	298	rrtm_n2ovmr, & !< N2O volume mixing ratio
	299	rrtm_o2vmr, & !< O2 volume mixing ratio
	300	rrtm_o3vmr, & !< O3 volume mixing ratio
	301	rrtm_play, & !< pressure layers (hPa, zu-grid)
	302	rrtm_plev, & !< pressure layers (hPa, zw-grid)
	303	rrtm_reice, & !< cloud ice effective radius (microns)
	304	rrtm_reliq, & !< cloud water drop effective radius (microns)
	305	rrtm_tlay, & !< actual temperature (K, zu-grid)
	306	rrtm_tlev, & !< actual temperature (K, zw-grid)
	307	rrtm_lwdflx, & !< RRTM output of incoming longwave radiation flux (W/m2)
	308	rrtm_lwdflxc, & !< RRTM output of outgoing clear sky longwave radiation flux (W/m2)
	309	rrtm_lwuflx, & !< RRTM output of outgoing longwave radiation flux (W/m2)
	310	rrtm_lwuflxc, & !< RRTM output of incoming clear sky longwave radiation flux (W/m2)
	311	rrtm_lwuflx_dt, & !< RRTM output of incoming clear sky longwave radiation flux (W/m2)
	312	rrtm_lwuflxc_dt,& !< RRTM output of outgoing clear sky longwave radiation flux (W/m2)
	313	rrtm_lwhr, & !< RRTM output of longwave radiation heating rate (K/d)
	314	rrtm_lwhrc, & !< RRTM output of incoming longwave clear sky radiation heating rate (K/d)
	315	rrtm_swdflx, & !< RRTM output of incoming shortwave radiation flux (W/m2)
	316	rrtm_swdflxc, & !< RRTM output of outgoing clear sky shortwave radiation flux (W/m2)
	317	rrtm_swuflx, & !< RRTM output of outgoing shortwave radiation flux (W/m2)
	318	rrtm_swuflxc, & !< RRTM output of incoming clear sky shortwave radiation flux (W/m2)
	319	rrtm_swhr, & !< RRTM output of shortwave radiation heating rate (K/d)
	320	rrtm_swhrc !< RRTM output of incoming shortwave clear sky radiation heating rate (K/d)
[1585]	321
	322	!
	323	!-- Definition of arrays that are currently not used for calling RRTMG (due to setting of flag parameters)
[1682]	324	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rad_lw_cs_in, & !< incoming clear sky longwave radiation (W/m2) (not used)
	325	rad_lw_cs_out, & !< outgoing clear sky longwave radiation (W/m2) (not used)
	326	rad_sw_cs_in, & !< incoming clear sky shortwave radiation (W/m2) (not used)
	327	rad_sw_cs_out, & !< outgoing clear sky shortwave radiation (W/m2) (not used)
	328	rrtm_aldif, & !< surface albedo for longwave diffuse radiation
	329	rrtm_aldir, & !< surface albedo for longwave direct radiation
	330	rrtm_asdif, & !< surface albedo for shortwave diffuse radiation
	331	rrtm_asdir, & !< surface albedo for shortwave direct radiation
	332	rrtm_lw_tauaer, & !< lw aerosol optical depth
	333	rrtm_lw_taucld, & !< lw in-cloud optical depth
	334	rrtm_sw_taucld, & !< sw in-cloud optical depth
	335	rrtm_sw_ssacld, & !< sw in-cloud single scattering albedo
	336	rrtm_sw_asmcld, & !< sw in-cloud asymmetry parameter
	337	rrtm_sw_fsfcld, & !< sw in-cloud forward scattering fraction
	338	rrtm_sw_tauaer, & !< sw aerosol optical depth
	339	rrtm_sw_ssaaer, & !< sw aerosol single scattering albedo
	340	rrtm_sw_asmaer, & !< sw aerosol asymmetry parameter
	341	rrtm_sw_ecaer !< sw aerosol optical detph at 0.55 microns (rrtm_iaer = 6 only)
[1691]	342
[1585]	343	#endif
	344
[1496]	345	INTERFACE init_radiation
	346	MODULE PROCEDURE init_radiation
	347	END INTERFACE init_radiation
	348
[1551]	349	INTERFACE radiation_clearsky
	350	MODULE PROCEDURE radiation_clearsky
	351	END INTERFACE radiation_clearsky
[1496]	352
[1585]	353	INTERFACE radiation_rrtmg
	354	MODULE PROCEDURE radiation_rrtmg
	355	END INTERFACE radiation_rrtmg
[1551]	356
[1585]	357	INTERFACE radiation_tendency
	358	MODULE PROCEDURE radiation_tendency
	359	MODULE PROCEDURE radiation_tendency_ij
	360	END INTERFACE radiation_tendency
[1551]	361
[1496]	362	SAVE
	363
	364	PRIVATE
	365
[1585]	366	PUBLIC albedo, albedo_type, albedo_type_name, albedo_lw_dif, albedo_lw_dir,&
	367	albedo_sw_dif, albedo_sw_dir, constant_albedo, day_init, dots_rad, &
[1691]	368	dt_radiation, emissivity, force_radiation_call, init_radiation, &
	369	lambda, lw_radiation, net_radiation, rad_net, rad_net_av, radiation,&
	370	radiation_clearsky, radiation_rrtmg, radiation_scheme, &
	371	radiation_tendency, rad_lw_in, rad_lw_in_av, rad_lw_out, &
[1709]	372	rad_lw_out_av, rad_lw_out_change_0, rad_lw_cs_hr, rad_lw_cs_hr_av, &
	373	rad_lw_hr, rad_lw_hr_av, rad_sw_in, rad_sw_in_av, rad_sw_out, &
	374	rad_sw_out_av, rad_sw_cs_hr, rad_sw_cs_hr_av, rad_sw_hr, &
	375	rad_sw_hr_av, sigma_sb, skip_time_do_radiation, sw_radiation, &
[1757]	376	time_radiation, time_utc_init, unscheduled_radiation_calls
[1496]	377
[1691]	378
[1585]	379	#if defined ( __rrtmg )
[1709]	380	PUBLIC rrtm_aldif, rrtm_aldir, rrtm_asdif, rrtm_asdir, rrtm_idrv
[1585]	381	#endif
[1496]	382
	383	CONTAINS
	384
	385	!------------------------------------------------------------------------------!
	386	! Description:
	387	! ------------
[1682]	388	!> Initialization of the radiation model
[1496]	389	!------------------------------------------------------------------------------!
	390	SUBROUTINE init_radiation
	391
	392	IMPLICIT NONE
	393
[1585]	394	!
	395	!-- Allocate array for storing the surface net radiation
	396	IF ( .NOT. ALLOCATED ( rad_net ) ) THEN
	397	ALLOCATE ( rad_net(nysg:nyng,nxlg:nxrg) )
	398	rad_net = 0.0_wp
	399	ENDIF
[1496]	400
	401	!
[1709]	402	!-- Allocate array for storing the surface net radiation
	403	IF ( .NOT. ALLOCATED ( rad_lw_out_change_0 ) ) THEN
	404	ALLOCATE ( rad_lw_out_change_0(nysg:nyng,nxlg:nxrg) )
	405	rad_lw_out_change_0 = 0.0_wp
	406	ENDIF
	407
	408	!
[1551]	409	!-- Fix net radiation in case of radiation_scheme = 'constant'
[1585]	410	IF ( radiation_scheme == 'constant' ) THEN
[1551]	411	rad_net = net_radiation
[1585]	412	radiation = .FALSE.
[1551]	413	!
[1585]	414	!-- Calculate orbital constants
	415	ELSE
[1551]	416	decl_1 = SIN(23.45_wp * pi / 180.0_wp)
	417	decl_2 = 2.0_wp * pi / 365.0_wp
	418	decl_3 = decl_2 * 81.0_wp
[1585]	419	lat = phi * pi / 180.0_wp
	420	lon = lambda * pi / 180.0_wp
	421	ENDIF
	422
	423
	424	IF ( radiation_scheme == 'clear-sky' ) THEN
	425
	426	ALLOCATE ( alpha(nysg:nyng,nxlg:nxrg) )
	427
	428	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
	429	ALLOCATE ( rad_sw_in(0:0,nysg:nyng,nxlg:nxrg) )
	430	ENDIF
	431	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
	432	ALLOCATE ( rad_sw_out(0:0,nysg:nyng,nxlg:nxrg) )
	433	ENDIF
	434
	435	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
	436	ALLOCATE ( rad_sw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
	437	ENDIF
	438	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
	439	ALLOCATE ( rad_sw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
	440	ENDIF
	441
	442	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
	443	ALLOCATE ( rad_lw_in(0:0,nysg:nyng,nxlg:nxrg) )
	444	ENDIF
	445	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
	446	ALLOCATE ( rad_lw_out(0:0,nysg:nyng,nxlg:nxrg) )
	447	ENDIF
	448
	449	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
	450	ALLOCATE ( rad_lw_in_av(0:0,nysg:nyng,nxlg:nxrg) )
	451	ENDIF
	452	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
	453	ALLOCATE ( rad_lw_out_av(0:0,nysg:nyng,nxlg:nxrg) )
	454	ENDIF
	455
	456	rad_sw_in = 0.0_wp
	457	rad_sw_out = 0.0_wp
	458	rad_lw_in = 0.0_wp
	459	rad_lw_out = 0.0_wp
	460
[1496]	461	!
[1585]	462	!-- Overwrite albedo if manually set in parameter file
	463	IF ( albedo_type /= 0 .AND. albedo == 9999999.9_wp ) THEN
	464	albedo = albedo_pars(2,albedo_type)
	465	ENDIF
	466
	467	alpha = albedo
	468
	469	!
	470	!-- Initialization actions for RRTMG
	471	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	472	#if defined ( __rrtmg )
	473	!
	474	!-- Allocate albedos
	475	ALLOCATE ( rrtm_aldif(0:0,nysg:nyng,nxlg:nxrg) )
	476	ALLOCATE ( rrtm_aldir(0:0,nysg:nyng,nxlg:nxrg) )
	477	ALLOCATE ( rrtm_asdif(0:0,nysg:nyng,nxlg:nxrg) )
	478	ALLOCATE ( rrtm_asdir(0:0,nysg:nyng,nxlg:nxrg) )
	479	ALLOCATE ( aldif(nysg:nyng,nxlg:nxrg) )
	480	ALLOCATE ( aldir(nysg:nyng,nxlg:nxrg) )
	481	ALLOCATE ( asdif(nysg:nyng,nxlg:nxrg) )
	482	ALLOCATE ( asdir(nysg:nyng,nxlg:nxrg) )
	483
	484	IF ( albedo_type /= 0 ) THEN
	485	IF ( albedo_lw_dif == 9999999.9_wp ) THEN
	486	albedo_lw_dif = albedo_pars(0,albedo_type)
	487	albedo_lw_dir = albedo_lw_dif
	488	ENDIF
	489	IF ( albedo_sw_dif == 9999999.9_wp ) THEN
	490	albedo_sw_dif = albedo_pars(1,albedo_type)
	491	albedo_sw_dir = albedo_sw_dif
	492	ENDIF
	493	ENDIF
	494
	495	aldif(:,:) = albedo_lw_dif
	496	aldir(:,:) = albedo_lw_dir
	497	asdif(:,:) = albedo_sw_dif
	498	asdir(:,:) = albedo_sw_dir
	499	!
	500	!-- Calculate initial values of current (cosine of) the zenith angle and
	501	!-- whether the sun is up
	502	CALL calc_zenith
	503	!
	504	!-- Calculate initial surface albedo
	505	IF ( .NOT. constant_albedo ) THEN
	506	CALL calc_albedo
	507	ELSE
	508	rrtm_aldif(0,:,:) = aldif(:,:)
	509	rrtm_aldir(0,:,:) = aldir(:,:)
	510	rrtm_asdif(0,:,:) = asdif(:,:)
	511	rrtm_asdir(0,:,:) = asdir(:,:)
	512	ENDIF
	513
	514	!
	515	!-- Allocate surface emissivity
	516	ALLOCATE ( rrtm_emis(0:0,1:nbndlw+1) )
	517	rrtm_emis = emissivity
	518
	519	!
	520	!-- Allocate 3d arrays of radiative fluxes and heating rates
	521	IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN
	522	ALLOCATE ( rad_sw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	523	rad_sw_in = 0.0_wp
	524	ENDIF
	525
	526	IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN
	527	ALLOCATE ( rad_sw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	528	ENDIF
	529
	530	IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN
	531	ALLOCATE ( rad_sw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1691]	532	rad_sw_out = 0.0_wp
[1585]	533	ENDIF
	534
	535	IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN
	536	ALLOCATE ( rad_sw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	537	ENDIF
	538
[1691]	539	IF ( .NOT. ALLOCATED ( rad_sw_hr ) ) THEN
	540	ALLOCATE ( rad_sw_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	541	rad_sw_hr = 0.0_wp
	542	ENDIF
[1585]	543
[1691]	544	IF ( .NOT. ALLOCATED ( rad_sw_hr_av ) ) THEN
	545	ALLOCATE ( rad_sw_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	546	rad_sw_hr_av = 0.0_wp
	547	ENDIF
	548
	549	IF ( .NOT. ALLOCATED ( rad_sw_cs_hr ) ) THEN
	550	ALLOCATE ( rad_sw_cs_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	551	rad_sw_cs_hr = 0.0_wp
	552	ENDIF
	553
	554	IF ( .NOT. ALLOCATED ( rad_sw_cs_hr_av ) ) THEN
	555	ALLOCATE ( rad_sw_cs_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	556	rad_sw_cs_hr_av = 0.0_wp
	557	ENDIF
	558
[1585]	559	IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN
	560	ALLOCATE ( rad_lw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	561	rad_lw_in = 0.0_wp
	562	ENDIF
	563
	564	IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN
	565	ALLOCATE ( rad_lw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	566	ENDIF
	567
	568	IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN
	569	ALLOCATE ( rad_lw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	570	rad_lw_out = 0.0_wp
	571	ENDIF
	572
	573	IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN
	574	ALLOCATE ( rad_lw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	575	ENDIF
	576
[1691]	577	IF ( .NOT. ALLOCATED ( rad_lw_hr ) ) THEN
	578	ALLOCATE ( rad_lw_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	579	rad_lw_hr = 0.0_wp
	580	ENDIF
	581
	582	IF ( .NOT. ALLOCATED ( rad_lw_hr_av ) ) THEN
	583	ALLOCATE ( rad_lw_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	584	rad_lw_hr_av = 0.0_wp
	585	ENDIF
	586
	587	IF ( .NOT. ALLOCATED ( rad_lw_cs_hr ) ) THEN
	588	ALLOCATE ( rad_lw_cs_hr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	589	rad_lw_cs_hr = 0.0_wp
	590	ENDIF
	591
	592	IF ( .NOT. ALLOCATED ( rad_lw_cs_hr_av ) ) THEN
	593	ALLOCATE ( rad_lw_cs_hr_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	594	rad_lw_cs_hr_av = 0.0_wp
	595	ENDIF
	596
	597	ALLOCATE ( rad_sw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	598	ALLOCATE ( rad_sw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1585]	599	rad_sw_cs_in = 0.0_wp
	600	rad_sw_cs_out = 0.0_wp
	601
[1691]	602	ALLOCATE ( rad_lw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	603	ALLOCATE ( rad_lw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1585]	604	rad_lw_cs_in = 0.0_wp
	605	rad_lw_cs_out = 0.0_wp
	606
	607	!
	608	!-- Allocate dummy array for storing surface temperature
	609	ALLOCATE ( rrtm_tsfc(1) )
	610
	611	!
	612	!-- Initialize RRTMG
	613	IF ( lw_radiation ) CALL rrtmg_lw_ini ( cp )
	614	IF ( sw_radiation ) CALL rrtmg_sw_ini ( cp )
	615
	616	!
	617	!-- Set input files for RRTMG
	618	INQUIRE(FILE="RAD_SND_DATA", EXIST=snd_exists)
	619	IF ( .NOT. snd_exists ) THEN
	620	rrtm_input_file = "rrtmg_lw.nc"
	621	ENDIF
	622
	623	!
	624	!-- Read vertical layers for RRTMG from sounding data
	625	!-- The routine provides nzt_rad, hyp_snd(1:nzt_rad),
	626	!-- t_snd(nzt+2:nzt_rad), rrtm_play(1:nzt_rad), rrtm_plev(1_nzt_rad+1),
	627	!-- rrtm_tlay(nzt+2:nzt_rad), rrtm_tlev(nzt+2:nzt_rad+1)
	628	CALL read_sounding_data
	629
	630	!
	631	!-- Read trace gas profiles from file. This routine provides
	632	!-- the rrtm_ arrays (1:nzt_rad+1)
	633	CALL read_trace_gas_data
	634	#endif
[1551]	635	ENDIF
[1585]	636
[1551]	637	!
[1585]	638	!-- Perform user actions if required
	639	CALL user_init_radiation
	640
	641
	642	!
[1551]	643	!-- Add timeseries for radiation model
[1585]	644	dots_rad = dots_num + 1
[1691]	645	dots_num = dots_num + 5
[1496]	646
[1701]	647	dots_label(dots_rad) = "rad_net"
	648	dots_label(dots_rad+1) = "rad_lw_in"
	649	dots_label(dots_rad+2) = "rad_lw_out"
	650	dots_label(dots_rad+3) = "rad_sw_in"
	651	dots_label(dots_rad+4) = "rad_sw_out"
[1691]	652	dots_unit(dots_rad:dots_rad+4) = "W/m2"
	653
[1585]	654	!
	655	!-- Output of albedos is only required for RRTMG
	656	IF ( radiation_scheme == 'rrtmg' ) THEN
	657	dots_num = dots_num + 4
[1691]	658	dots_label(dots_rad+5) = "rrtm_aldif"
	659	dots_label(dots_rad+6) = "rrtm_aldir"
	660	dots_label(dots_rad+7) = "rrtm_asdif"
	661	dots_label(dots_rad+8) = "rrtm_asdir"
	662	dots_unit(dots_num+5:dots_num+8) = ""
	663
[1585]	664	ENDIF
[1551]	665
[1585]	666	!
	667	!-- Calculate radiative fluxes at model start
	668	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	669	IF ( radiation_scheme == 'clear-sky' ) THEN
[1709]	670	CALL radiation_clearsky
[1585]	671	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	672	CALL radiation_rrtmg
	673	ENDIF
	674	ENDIF
	675
[1496]	676	RETURN
	677
	678	END SUBROUTINE init_radiation
	679
	680
	681	!------------------------------------------------------------------------------!
	682	! Description:
	683	! ------------
[1682]	684	!> A simple clear sky radiation model
[1496]	685	!------------------------------------------------------------------------------!
[1551]	686	SUBROUTINE radiation_clearsky
[1496]	687
[1585]	688	USE indices, &
	689	ONLY: nbgp
	690
[1496]	691	IMPLICIT NONE
	692
[1691]	693	INTEGER(iwp) :: i, j, k !< loop indices
	694	REAL(wp) :: exn, & !< Exner functions at surface
[1709]	695	exn1, & !< Exner functions at first grid level
	696	pt1 !< potential temperature at first grid level
[1585]	697
[1496]	698	!
[1585]	699	!-- Calculate current zenith angle
	700	CALL calc_zenith
	701
	702	!
	703	!-- Calculate sky transmissivity
	704	sky_trans = 0.6_wp + 0.2_wp * zenith(0)
	705
	706	!
	707	!-- Calculate value of the Exner function
	708	exn = (surface_pressure / 1000.0_wp )**0.286_wp
	709	!
	710	!-- Calculate radiation fluxes and net radiation (rad_net) for each grid
	711	!-- point
[1709]	712	DO i = nxlg, nxrg
	713	DO j = nysg, nyng
[1585]	714	k = nzb_s_inner(j,i)
[1691]	715
[1709]	716	exn1 = (hyp(k+1) / 100000.0_wp )**0.286_wp
[1691]	717
[1585]	718	rad_sw_in(0,j,i) = solar_constant * sky_trans * zenith(0)
	719	rad_sw_out(0,j,i) = alpha(j,i) * rad_sw_in(0,j,i)
[1691]	720	rad_lw_out(0,j,i) = emissivity * sigma_sb * (pt(k,j,i) * exn)**4
[1585]	721
[1691]	722	IF ( cloud_physics ) THEN
[1709]	723	pt1 = pt(k+1,j,i) + l_d_cp / exn1 * ql(k+1,j,i)
	724	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt1 * exn1)**4
[1691]	725	ELSE
[1709]	726	rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt(k+1,j,i) * exn1)**4
[1691]	727	ENDIF
	728
	729	rad_net(j,i) = rad_sw_in(0,j,i) - rad_sw_out(0,j,i) &
	730	+ rad_lw_in(0,j,i) - rad_lw_out(0,j,i)
	731
[1585]	732	ENDDO
	733	ENDDO
	734
	735	END SUBROUTINE radiation_clearsky
	736
	737
	738	!------------------------------------------------------------------------------!
	739	! Description:
	740	! ------------
[1682]	741	!> Implementation of the RRTMG radiation_scheme
[1585]	742	!------------------------------------------------------------------------------!
	743	SUBROUTINE radiation_rrtmg
	744
	745	USE indices, &
	746	ONLY: nbgp
	747
	748	USE particle_attributes, &
	749	ONLY: grid_particles, number_of_particles, particles, &
	750	particle_advection_start, prt_count
	751
	752	IMPLICIT NONE
	753
	754	#if defined ( __rrtmg )
	755
[1691]	756	INTEGER(iwp) :: i, j, k, n !< loop indices
[1585]	757
[1691]	758	REAL(wp) :: s_r2, & !< weighted sum over all droplets with r^2
	759	s_r3 !< weighted sum over all droplets with r^3
[1585]	760
	761	!
	762	!-- Calculate current (cosine of) zenith angle and whether the sun is up
	763	CALL calc_zenith
	764	!
	765	!-- Calculate surface albedo
	766	IF ( .NOT. constant_albedo ) THEN
	767	CALL calc_albedo
	768	ENDIF
	769
	770	!
	771	!-- Prepare input data for RRTMG
	772
	773	!
	774	!-- In case of large scale forcing with surface data, calculate new pressure
	775	!-- profile. nzt_rad might be modified by these calls and all required arrays
	776	!-- will then be re-allocated
[1691]	777	IF ( large_scale_forcing .AND. lsf_surf ) THEN
[1585]	778	CALL read_sounding_data
	779	CALL read_trace_gas_data
	780	ENDIF
	781	!
	782	!-- Loop over all grid points
	783	DO i = nxl, nxr
	784	DO j = nys, nyn
	785
	786	!
	787	!-- Prepare profiles of temperature and H2O volume mixing ratio
[1691]	788	rrtm_tlev(0,nzb+1) = pt(nzb,j,i) * ( surface_pressure &
	789	/ 1000.0_wp )**0.286_wp
[1585]	790
	791	DO k = nzb+1, nzt+1
	792	rrtm_tlay(0,k) = pt(k,j,i) * ( (hyp(k) ) / 100000.0_wp &
[1691]	793	)*0.286_wp + l_d_cp ql(k,j,i)
	794	rrtm_h2ovmr(0,k) = mol_mass_air_d_wv * (q(k,j,i) - ql(k,j,i))
[1585]	795
	796	ENDDO
	797
	798	!
	799	!-- Avoid temperature/humidity jumps at the top of the LES domain by
	800	!-- linear interpolation from nzt+2 to nzt+7
	801	DO k = nzt+2, nzt+7
	802	rrtm_tlay(0,k) = rrtm_tlay(0,nzt+1) &
	803	+ ( rrtm_tlay(0,nzt+8) - rrtm_tlay(0,nzt+1) ) &
	804	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) ) &
	805	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
	806
	807	rrtm_h2ovmr(0,k) = rrtm_h2ovmr(0,nzt+1) &
	808	+ ( rrtm_h2ovmr(0,nzt+8) - rrtm_h2ovmr(0,nzt+1) )&
	809	/ ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) )&
	810	* ( rrtm_play(0,k) - rrtm_play(0,nzt+1) )
	811
	812	ENDDO
	813
	814	!-- Linear interpolate to zw grid
	815	DO k = nzb+2, nzt+8
	816	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) - &
	817	rrtm_tlay(0,k-1)) &
	818	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
	819	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
	820	ENDDO
	821
	822
	823	!
	824	!-- Calculate liquid water path and cloud fraction for each column.
	825	!-- Note that LWP is required in g/mÂ² instead of kg/kg m.
	826	rrtm_cldfr = 0.0_wp
	827	rrtm_reliq = 0.0_wp
	828	rrtm_cliqwp = 0.0_wp
[1691]	829	rrtm_icld = 0
[1585]	830
	831	DO k = nzb+1, nzt+1
[1691]	832	rrtm_cliqwp(0,k) = ql(k,j,i) * 1000.0_wp * &
	833	(rrtm_plev(0,k) - rrtm_plev(0,k+1)) &
	834	* 100.0_wp / g
[1585]	835
[1691]	836	IF ( rrtm_cliqwp(0,k) > 0.0_wp ) THEN
[1585]	837	rrtm_cldfr(0,k) = 1.0_wp
[1691]	838	IF ( rrtm_icld == 0 ) rrtm_icld = 1
[1585]	839
	840	!
	841	!-- Calculate cloud droplet effective radius
	842	IF ( cloud_physics ) THEN
[1691]	843	rrtm_reliq(0,k) = 1.0E6_wp * ( 3.0_wp * ql(k,j,i) &
	844	* rho_surface &
	845	/ ( 4.0_wp * pi * nc_const * rho_l ) &
	846	)**0.33333333333333_wp &
	847	* EXP( LOG( sigma_gc )**2 )
[1585]	848
	849	ELSEIF ( cloud_droplets ) THEN
	850	number_of_particles = prt_count(k,j,i)
	851
	852	IF (number_of_particles <= 0) CYCLE
	853	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	854	s_r2 = 0.0_wp
	855	s_r3 = 0.0_wp
	856
	857	DO n = 1, number_of_particles
	858	IF ( particles(n)%particle_mask ) THEN
	859	s_r2 = s_r2 + particles(n)%radius*2 &
	860	particles(n)%weight_factor
	861	s_r3 = s_r3 + particles(n)%radius*3 &
	862	particles(n)%weight_factor
	863	ENDIF
	864	ENDDO
	865
	866	IF ( s_r2 > 0.0_wp ) rrtm_reliq(0,k) = s_r3 / s_r2
	867
	868	ENDIF
	869
	870	!
	871	!-- Limit effective radius
[1691]	872	IF ( rrtm_reliq(0,k) > 0.0_wp ) THEN
[1585]	873	rrtm_reliq(0,k) = MAX(rrtm_reliq(0,k),2.5_wp)
	874	rrtm_reliq(0,k) = MIN(rrtm_reliq(0,k),60.0_wp)
	875	ENDIF
	876	ENDIF
	877	ENDDO
	878
	879	!
	880	!-- Set surface temperature
	881	rrtm_tsfc = pt(nzb,j,i) * (surface_pressure / 1000.0_wp )**0.286_wp
	882
	883	IF ( lw_radiation ) THEN
	884	CALL rrtmg_lw( 1, nzt_rad , rrtm_icld , rrtm_idrv ,&
	885	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
	886	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
	887	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_cfc11vmr ,&
	888	rrtm_cfc12vmr , rrtm_cfc22vmr, rrtm_ccl4vmr , rrtm_emis ,&
	889	rrtm_inflglw , rrtm_iceflglw, rrtm_liqflglw, rrtm_cldfr ,&
	890	rrtm_lw_taucld , rrtm_cicewp , rrtm_cliqwp , rrtm_reice ,&
	891	rrtm_reliq , rrtm_lw_tauaer, &
	892	rrtm_lwuflx , rrtm_lwdflx , rrtm_lwhr , &
[1691]	893	rrtm_lwuflxc , rrtm_lwdflxc , rrtm_lwhrc , &
	894	rrtm_lwuflx_dt , rrtm_lwuflxc_dt )
[1585]	895
[1691]	896	!
	897	!-- Save fluxes
[1585]	898	DO k = nzb, nzt+1
	899	rad_lw_in(k,j,i) = rrtm_lwdflx(0,k)
	900	rad_lw_out(k,j,i) = rrtm_lwuflx(0,k)
	901	ENDDO
	902
[1691]	903	!
	904	!-- Save heating rates (convert from K/d to K/h)
	905	DO k = nzb+1, nzt+1
	906	rad_lw_hr(k,j,i) = rrtm_lwhr(0,k) * d_hours_day
	907	rad_lw_cs_hr(k,j,i) = rrtm_lwhrc(0,k) * d_hours_day
	908	ENDDO
[1585]	909
[1709]	910	!
	911	!-- Save change in LW heating rate
	912	rad_lw_out_change_0(j,i) = rrtm_lwuflx_dt(0,nzb)
	913
[1585]	914	ENDIF
	915
	916	IF ( sw_radiation .AND. sun_up ) THEN
	917	CALL rrtmg_sw( 1, nzt_rad , rrtm_icld , rrtm_iaer ,&
	918	rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,&
	919	rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,&
	920	rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_asdir(:,j,i),&
	921	rrtm_asdif(:,j,i), rrtm_aldir(:,j,i), rrtm_aldif(:,j,i), zenith,&
	922	0.0_wp , day , solar_constant, rrtm_inflgsw,&
	923	rrtm_iceflgsw , rrtm_liqflgsw, rrtm_cldfr , rrtm_sw_taucld ,&
	924	rrtm_sw_ssacld , rrtm_sw_asmcld, rrtm_sw_fsfcld, rrtm_cicewp ,&
	925	rrtm_cliqwp , rrtm_reice , rrtm_reliq , rrtm_sw_tauaer ,&
	926	rrtm_sw_ssaaer , rrtm_sw_asmaer , rrtm_sw_ecaer , &
	927	rrtm_swuflx , rrtm_swdflx , rrtm_swhr , &
	928	rrtm_swuflxc , rrtm_swdflxc , rrtm_swhrc )
	929
[1691]	930	!
	931	!-- Save fluxes
[1585]	932	DO k = nzb, nzt+1
	933	rad_sw_in(k,j,i) = rrtm_swdflx(0,k)
	934	rad_sw_out(k,j,i) = rrtm_swuflx(0,k)
	935	ENDDO
[1691]	936
	937	!
	938	!-- Save heating rates (convert from K/d to K/s)
	939	DO k = nzb+1, nzt+1
	940	rad_sw_hr(k,j,i) = rrtm_swhr(0,k) * d_hours_day
	941	rad_sw_cs_hr(k,j,i) = rrtm_swhrc(0,k) * d_hours_day
	942	ENDDO
	943
[1585]	944	ENDIF
	945
	946	!
	947	!-- Calculate surface net radiation
	948	rad_net(j,i) = rad_sw_in(nzb,j,i) - rad_sw_out(nzb,j,i) &
	949	+ rad_lw_in(nzb,j,i) - rad_lw_out(nzb,j,i)
	950
	951	ENDDO
	952	ENDDO
	953
	954	CALL exchange_horiz( rad_lw_in, nbgp )
	955	CALL exchange_horiz( rad_lw_out, nbgp )
[1691]	956	CALL exchange_horiz( rad_lw_hr, nbgp )
	957	CALL exchange_horiz( rad_lw_cs_hr, nbgp )
	958
[1585]	959	CALL exchange_horiz( rad_sw_in, nbgp )
	960	CALL exchange_horiz( rad_sw_out, nbgp )
[1691]	961	CALL exchange_horiz( rad_sw_hr, nbgp )
	962	CALL exchange_horiz( rad_sw_cs_hr, nbgp )
	963
[1585]	964	CALL exchange_horiz_2d( rad_net, nbgp )
[1709]	965	CALL exchange_horiz_2d( rad_lw_out_change_0, nbgp )
[1585]	966	#endif
	967
	968	END SUBROUTINE radiation_rrtmg
	969
	970
	971	!------------------------------------------------------------------------------!
	972	! Description:
	973	! ------------
[1682]	974	!> Calculate the cosine of the zenith angle (variable is called zenith)
[1585]	975	!------------------------------------------------------------------------------!
	976	SUBROUTINE calc_zenith
	977
	978	IMPLICIT NONE
	979
[1682]	980	REAL(wp) :: declination, & !< solar declination angle
	981	hour_angle !< solar hour angle
[1585]	982	!
[1496]	983	!-- Calculate current day and time based on the initial values and simulation
	984	!-- time
[1585]	985	day = day_init + INT(FLOOR( (time_utc_init + time_since_reference_point) &
	986	/ 86400.0_wp ), KIND=iwp)
[1496]	987	time_utc = MOD((time_utc_init + time_since_reference_point), 86400.0_wp)
	988
	989
	990	!
	991	!-- Calculate solar declination and hour angle
[1585]	992	declination = ASIN( decl_1 * SIN(decl_2 * REAL(day, KIND=wp) - decl_3) )
[1496]	993	hour_angle = 2.0_wp * pi * (time_utc / 86400.0_wp) + lon - pi
	994
	995	!
	996	!-- Calculate zenith angle
[1585]	997	zenith(0) = SIN(lat) * SIN(declination) + COS(lat) * COS(declination) &
[1496]	998	* COS(hour_angle)
[1585]	999	zenith(0) = MAX(0.0_wp,zenith(0))
[1496]	1000
	1001	!
[1585]	1002	!-- Check if the sun is up (otheriwse shortwave calculations can be skipped)
[1691]	1003	IF ( zenith(0) > 0.0_wp ) THEN
[1585]	1004	sun_up = .TRUE.
	1005	ELSE
	1006	sun_up = .FALSE.
	1007	END IF
[1496]	1008
[1585]	1009	END SUBROUTINE calc_zenith
	1010
[1606]	1011	#if defined ( __rrtmg ) && defined ( __netcdf )
[1585]	1012	!------------------------------------------------------------------------------!
	1013	! Description:
	1014	! ------------
[1682]	1015	!> Calculates surface albedo components based on Briegleb (1992) and
	1016	!> Briegleb et al. (1986)
[1585]	1017	!------------------------------------------------------------------------------!
	1018	SUBROUTINE calc_albedo
	1019
	1020	IMPLICIT NONE
	1021
	1022	IF ( sun_up ) THEN
[1496]	1023	!
[1585]	1024	!-- Ocean
	1025	IF ( albedo_type == 1 ) THEN
	1026	rrtm_aldir(0,:,:) = 0.026_wp / ( zenith(0)**1.7_wp + 0.065_wp ) &
	1027	+ 0.15_wp * ( zenith(0) - 0.1_wp ) &
	1028	* ( zenith(0) - 0.5_wp ) &
	1029	* ( zenith(0) - 1.0_wp )
	1030	rrtm_asdir(0,:,:) = rrtm_aldir(0,:,:)
	1031	!
	1032	!-- Snow
	1033	ELSEIF ( albedo_type == 16 ) THEN
	1034	IF ( zenith(0) < 0.5_wp ) THEN
	1035	rrtm_aldir(0,:,:) = 0.5_wp * (1.0_wp - aldif) &
	1036	* ( 3.0_wp / (1.0_wp + 4.0_wp &
	1037	* zenith(0))) - 1.0_wp
	1038	rrtm_asdir(0,:,:) = 0.5_wp * (1.0_wp - asdif) &
	1039	* ( 3.0_wp / (1.0_wp + 4.0_wp &
	1040	* zenith(0))) - 1.0_wp
[1496]	1041
[1585]	1042	rrtm_aldir(0,:,:) = MIN(0.98_wp, rrtm_aldir(0,:,:))
	1043	rrtm_asdir(0,:,:) = MIN(0.98_wp, rrtm_asdir(0,:,:))
	1044	ELSE
	1045	rrtm_aldir(0,:,:) = aldif
	1046	rrtm_asdir(0,:,:) = asdif
	1047	ENDIF
[1496]	1048	!
[1585]	1049	!-- Sea ice
	1050	ELSEIF ( albedo_type == 15 ) THEN
	1051	rrtm_aldir(0,:,:) = aldif
	1052	rrtm_asdir(0,:,:) = asdif
	1053	!
	1054	!-- Land surfaces
	1055	ELSE
	1056	SELECT CASE ( albedo_type )
[1496]	1057
[1585]	1058	!
	1059	!-- Surface types with strong zenith dependence
	1060	CASE ( 1, 2, 3, 4, 11, 12, 13 )
	1061	rrtm_aldir(0,:,:) = aldif * 1.4_wp / &
	1062	(1.0_wp + 0.8_wp * zenith(0))
	1063	rrtm_asdir(0,:,:) = asdif * 1.4_wp / &
	1064	(1.0_wp + 0.8_wp * zenith(0))
	1065	!
	1066	!-- Surface types with weak zenith dependence
	1067	CASE ( 5, 6, 7, 8, 9, 10, 14 )
	1068	rrtm_aldir(0,:,:) = aldif * 1.1_wp / &
	1069	(1.0_wp + 0.2_wp * zenith(0))
	1070	rrtm_asdir(0,:,:) = asdif * 1.1_wp / &
	1071	(1.0_wp + 0.2_wp * zenith(0))
[1496]	1072
[1585]	1073	CASE DEFAULT
	1074
	1075	END SELECT
	1076	ENDIF
	1077	!
	1078	!-- Diffusive albedo is taken from Table 2
	1079	rrtm_aldif(0,:,:) = aldif
	1080	rrtm_asdif(0,:,:) = asdif
	1081
	1082	ELSE
	1083
	1084	rrtm_aldir(0,:,:) = 0.0_wp
	1085	rrtm_asdir(0,:,:) = 0.0_wp
	1086	rrtm_aldif(0,:,:) = 0.0_wp
	1087	rrtm_asdif(0,:,:) = 0.0_wp
	1088	ENDIF
	1089	END SUBROUTINE calc_albedo
	1090
	1091	!------------------------------------------------------------------------------!
	1092	! Description:
	1093	! ------------
[1682]	1094	!> Read sounding data (pressure and temperature) from RADIATION_DATA.
[1585]	1095	!------------------------------------------------------------------------------!
	1096	SUBROUTINE read_sounding_data
	1097
	1098	USE netcdf_control
	1099
	1100	IMPLICIT NONE
	1101
[1691]	1102	INTEGER(iwp) :: id, & !< NetCDF id of input file
	1103	id_dim_zrad, & !< pressure level id in the NetCDF file
	1104	id_var, & !< NetCDF variable id
	1105	k, & !< loop index
	1106	nz_snd, & !< number of vertical levels in the sounding data
	1107	nz_snd_start, & !< start vertical index for sounding data to be used
	1108	nz_snd_end !< end vertical index for souding data to be used
[1585]	1109
[1691]	1110	REAL(wp) :: t_surface !< actual surface temperature
[1585]	1111
[1691]	1112	REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd_tmp, & !< temporary hydrostatic pressure profile (sounding)
	1113	t_snd_tmp !< temporary temperature profile (sounding)
[1585]	1114
	1115	!
	1116	!-- In case of updates, deallocate arrays first (sufficient to check one
	1117	!-- array as the others are automatically allocated). This is required
	1118	!-- because nzt_rad might change during the update
	1119	IF ( ALLOCATED ( hyp_snd ) ) THEN
	1120	DEALLOCATE( hyp_snd )
	1121	DEALLOCATE( t_snd )
	1122	DEALLOCATE( q_snd )
	1123	DEALLOCATE ( rrtm_play )
	1124	DEALLOCATE ( rrtm_plev )
	1125	DEALLOCATE ( rrtm_tlay )
	1126	DEALLOCATE ( rrtm_tlev )
[1691]	1127
[1585]	1128	DEALLOCATE ( rrtm_h2ovmr )
	1129	DEALLOCATE ( rrtm_cicewp )
	1130	DEALLOCATE ( rrtm_cldfr )
	1131	DEALLOCATE ( rrtm_cliqwp )
	1132	DEALLOCATE ( rrtm_reice )
	1133	DEALLOCATE ( rrtm_reliq )
	1134	DEALLOCATE ( rrtm_lw_taucld )
	1135	DEALLOCATE ( rrtm_lw_tauaer )
[1691]	1136
[1585]	1137	DEALLOCATE ( rrtm_lwdflx )
[1691]	1138	DEALLOCATE ( rrtm_lwdflxc )
[1585]	1139	DEALLOCATE ( rrtm_lwuflx )
[1691]	1140	DEALLOCATE ( rrtm_lwuflxc )
	1141	DEALLOCATE ( rrtm_lwuflx_dt )
	1142	DEALLOCATE ( rrtm_lwuflxc_dt )
[1585]	1143	DEALLOCATE ( rrtm_lwhr )
	1144	DEALLOCATE ( rrtm_lwhrc )
[1691]	1145
[1585]	1146	DEALLOCATE ( rrtm_sw_taucld )
	1147	DEALLOCATE ( rrtm_sw_ssacld )
	1148	DEALLOCATE ( rrtm_sw_asmcld )
	1149	DEALLOCATE ( rrtm_sw_fsfcld )
	1150	DEALLOCATE ( rrtm_sw_tauaer )
	1151	DEALLOCATE ( rrtm_sw_ssaaer )
	1152	DEALLOCATE ( rrtm_sw_asmaer )
[1691]	1153	DEALLOCATE ( rrtm_sw_ecaer )
	1154
[1585]	1155	DEALLOCATE ( rrtm_swdflx )
[1691]	1156	DEALLOCATE ( rrtm_swdflxc )
[1585]	1157	DEALLOCATE ( rrtm_swuflx )
[1691]	1158	DEALLOCATE ( rrtm_swuflxc )
[1585]	1159	DEALLOCATE ( rrtm_swhr )
	1160	DEALLOCATE ( rrtm_swhrc )
[1691]	1161
[1585]	1162	ENDIF
	1163
	1164	!
	1165	!-- Open file for reading
	1166	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
	1167	CALL handle_netcdf_error( 'netcdf', 549 )
	1168
	1169	!
	1170	!-- Inquire dimension of z axis and save in nz_snd
	1171	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim_zrad )
	1172	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim_zrad, len = nz_snd )
	1173	CALL handle_netcdf_error( 'netcdf', 551 )
	1174
	1175	!
	1176	! !-- Allocate temporary array for storing pressure data
[1701]	1177	ALLOCATE( hyp_snd_tmp(1:nz_snd) )
[1585]	1178	hyp_snd_tmp = 0.0_wp
	1179
	1180
	1181	!-- Read pressure from file
	1182	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
[1691]	1183	nc_stat = NF90_GET_VAR( id, id_var, hyp_snd_tmp(:), start = (/1/), &
[1585]	1184	count = (/nz_snd/) )
	1185	CALL handle_netcdf_error( 'netcdf', 552 )
	1186
	1187	!
	1188	!-- Allocate temporary array for storing temperature data
[1701]	1189	ALLOCATE( t_snd_tmp(1:nz_snd) )
[1585]	1190	t_snd_tmp = 0.0_wp
	1191
	1192	!
	1193	!-- Read temperature from file
	1194	nc_stat = NF90_INQ_VARID( id, "ReferenceTemperature", id_var )
[1691]	1195	nc_stat = NF90_GET_VAR( id, id_var, t_snd_tmp(:), start = (/1/), &
[1585]	1196	count = (/nz_snd/) )
	1197	CALL handle_netcdf_error( 'netcdf', 553 )
	1198
	1199	!
	1200	!-- Calculate start of sounding data
	1201	nz_snd_start = nz_snd + 1
[1701]	1202	nz_snd_end = nz_snd + 1
[1585]	1203
	1204	!
	1205	!-- Start filling vertical dimension at 10hPa above the model domain (hyp is
	1206	!-- in Pa, hyp_snd in hPa).
	1207	DO k = 1, nz_snd
[1691]	1208	IF ( hyp_snd_tmp(k) < ( hyp(nzt+1) - 1000.0_wp) * 0.01_wp ) THEN
[1585]	1209	nz_snd_start = k
	1210	EXIT
	1211	END IF
	1212	END DO
	1213
[1691]	1214	IF ( nz_snd_start <= nz_snd ) THEN
[1701]	1215	nz_snd_end = nz_snd
[1585]	1216	END IF
	1217
	1218
	1219	!
	1220	!-- Calculate of total grid points for RRTMG calculations
[1701]	1221	nzt_rad = nzt + nz_snd_end - nz_snd_start + 1
[1585]	1222
	1223	!
	1224	!-- Save data above LES domain in hyp_snd, t_snd and q_snd
	1225	!-- Note: q_snd_tmp is not calculated at the moment (dry residual atmosphere)
	1226	ALLOCATE( hyp_snd(nzb+1:nzt_rad) )
	1227	ALLOCATE( t_snd(nzb+1:nzt_rad) )
	1228	ALLOCATE( q_snd(nzb+1:nzt_rad) )
	1229	hyp_snd = 0.0_wp
	1230	t_snd = 0.0_wp
	1231	q_snd = 0.0_wp
	1232
[1757]	1233	hyp_snd(nzt+2:nzt_rad) = hyp_snd_tmp(nz_snd_start+1:nz_snd_end)
	1234	t_snd(nzt+2:nzt_rad) = t_snd_tmp(nz_snd_start+1:nz_snd_end)
[1585]	1235
	1236	nc_stat = NF90_CLOSE( id )
	1237
	1238	!
	1239	!-- Calculate pressure levels on zu and zw grid. Sounding data is added at
	1240	!-- top of the LES domain. This routine does not consider horizontal or
	1241	!-- vertical variability of pressure and temperature
	1242	ALLOCATE ( rrtm_play(0:0,nzb+1:nzt_rad+1) )
	1243	ALLOCATE ( rrtm_plev(0:0,nzb+1:nzt_rad+2) )
	1244
[1691]	1245	t_surface = pt_surface * ( surface_pressure / 1000.0_wp )**0.286_wp
[1585]	1246	DO k = nzb+1, nzt+1
	1247	rrtm_play(0,k) = hyp(k) * 0.01_wp
	1248	rrtm_plev(0,k) = surface_pressure * ( (t_surface - g/cp * zw(k-1)) / &
	1249	t_surface )**(1.0_wp/0.286_wp)
	1250	ENDDO
	1251
	1252	DO k = nzt+2, nzt_rad
	1253	rrtm_play(0,k) = hyp_snd(k)
	1254	rrtm_plev(0,k) = 0.5_wp * ( rrtm_play(0,k) + rrtm_play(0,k-1) )
	1255	ENDDO
	1256	rrtm_plev(0,nzt_rad+1) = MAX( 0.5 * hyp_snd(nzt_rad), &
	1257	1.5 * hyp_snd(nzt_rad) &
	1258	- 0.5 * hyp_snd(nzt_rad-1) )
	1259	rrtm_plev(0,nzt_rad+2) = MIN( 1.0E-4_wp, &
	1260	0.25_wp * rrtm_plev(0,nzt_rad+1) )
	1261
	1262	rrtm_play(0,nzt_rad+1) = 0.5 * rrtm_plev(0,nzt_rad+1)
	1263
	1264	!
	1265	!-- Calculate temperature/humidity levels at top of the LES domain.
	1266	!-- Currently, the temperature is taken from sounding data (might lead to a
	1267	!-- temperature jump at interface. To do: Humidity is currently not
	1268	!-- calculated above the LES domain.
	1269	ALLOCATE ( rrtm_tlay(0:0,nzb+1:nzt_rad+1) )
	1270	ALLOCATE ( rrtm_tlev(0:0,nzb+1:nzt_rad+2) )
	1271	ALLOCATE ( rrtm_h2ovmr(0:0,nzb+1:nzt_rad+1) )
	1272
	1273	DO k = nzt+8, nzt_rad
	1274	rrtm_tlay(0,k) = t_snd(k)
	1275	rrtm_h2ovmr(0,k) = q_snd(k)
	1276	ENDDO
[1691]	1277	rrtm_tlay(0,nzt_rad+1) = 2.0_wp * rrtm_tlay(0,nzt_rad) &
	1278	- rrtm_tlay(0,nzt_rad-1)
[1585]	1279	DO k = nzt+9, nzt_rad+1
	1280	rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) &
	1281	- rrtm_tlay(0,k-1)) &
	1282	/ ( rrtm_play(0,k) - rrtm_play(0,k-1) ) &
	1283	* ( rrtm_plev(0,k) - rrtm_play(0,k-1) )
	1284	ENDDO
	1285	rrtm_h2ovmr(0,nzt_rad+1) = rrtm_h2ovmr(0,nzt_rad)
	1286
	1287	rrtm_tlev(0,nzt_rad+2) = 2.0_wp * rrtm_tlay(0,nzt_rad+1) &
	1288	- rrtm_tlev(0,nzt_rad)
	1289	!
	1290	!-- Allocate remaining RRTMG arrays
	1291	ALLOCATE ( rrtm_cicewp(0:0,nzb+1:nzt_rad+1) )
	1292	ALLOCATE ( rrtm_cldfr(0:0,nzb+1:nzt_rad+1) )
	1293	ALLOCATE ( rrtm_cliqwp(0:0,nzb+1:nzt_rad+1) )
	1294	ALLOCATE ( rrtm_reice(0:0,nzb+1:nzt_rad+1) )
	1295	ALLOCATE ( rrtm_reliq(0:0,nzb+1:nzt_rad+1) )
	1296	ALLOCATE ( rrtm_lw_taucld(1:nbndlw+1,0:0,nzb+1:nzt_rad+1) )
	1297	ALLOCATE ( rrtm_lw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndlw+1) )
	1298	ALLOCATE ( rrtm_sw_taucld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1299	ALLOCATE ( rrtm_sw_ssacld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1300	ALLOCATE ( rrtm_sw_asmcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1301	ALLOCATE ( rrtm_sw_fsfcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) )
	1302	ALLOCATE ( rrtm_sw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1303	ALLOCATE ( rrtm_sw_ssaaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1304	ALLOCATE ( rrtm_sw_asmaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) )
	1305	ALLOCATE ( rrtm_sw_ecaer(0:0,nzb+1:nzt_rad+1,1:naerec+1) )
	1306
	1307	!
	1308	!-- The ice phase is currently not considered in PALM
	1309	rrtm_cicewp = 0.0_wp
	1310	rrtm_reice = 0.0_wp
	1311
	1312	!
	1313	!-- Set other parameters (move to NAMELIST parameters in the future)
	1314	rrtm_lw_tauaer = 0.0_wp
	1315	rrtm_lw_taucld = 0.0_wp
	1316	rrtm_sw_taucld = 0.0_wp
	1317	rrtm_sw_ssacld = 0.0_wp
	1318	rrtm_sw_asmcld = 0.0_wp
	1319	rrtm_sw_fsfcld = 0.0_wp
	1320	rrtm_sw_tauaer = 0.0_wp
	1321	rrtm_sw_ssaaer = 0.0_wp
	1322	rrtm_sw_asmaer = 0.0_wp
	1323	rrtm_sw_ecaer = 0.0_wp
	1324
	1325
	1326	ALLOCATE ( rrtm_swdflx(0:0,nzb:nzt_rad+1) )
	1327	ALLOCATE ( rrtm_swuflx(0:0,nzb:nzt_rad+1) )
	1328	ALLOCATE ( rrtm_swhr(0:0,nzb+1:nzt_rad+1) )
	1329	ALLOCATE ( rrtm_swuflxc(0:0,nzb:nzt_rad+1) )
	1330	ALLOCATE ( rrtm_swdflxc(0:0,nzb:nzt_rad+1) )
	1331	ALLOCATE ( rrtm_swhrc(0:0,nzb+1:nzt_rad+1) )
	1332
	1333	rrtm_swdflx = 0.0_wp
	1334	rrtm_swuflx = 0.0_wp
	1335	rrtm_swhr = 0.0_wp
	1336	rrtm_swuflxc = 0.0_wp
	1337	rrtm_swdflxc = 0.0_wp
	1338	rrtm_swhrc = 0.0_wp
	1339
	1340	ALLOCATE ( rrtm_lwdflx(0:0,nzb:nzt_rad+1) )
	1341	ALLOCATE ( rrtm_lwuflx(0:0,nzb:nzt_rad+1) )
	1342	ALLOCATE ( rrtm_lwhr(0:0,nzb+1:nzt_rad+1) )
	1343	ALLOCATE ( rrtm_lwuflxc(0:0,nzb:nzt_rad+1) )
	1344	ALLOCATE ( rrtm_lwdflxc(0:0,nzb:nzt_rad+1) )
	1345	ALLOCATE ( rrtm_lwhrc(0:0,nzb+1:nzt_rad+1) )
	1346
	1347	rrtm_lwdflx = 0.0_wp
	1348	rrtm_lwuflx = 0.0_wp
	1349	rrtm_lwhr = 0.0_wp
	1350	rrtm_lwuflxc = 0.0_wp
	1351	rrtm_lwdflxc = 0.0_wp
	1352	rrtm_lwhrc = 0.0_wp
	1353
[1691]	1354	ALLOCATE ( rrtm_lwuflx_dt(0:0,nzb:nzt_rad+1) )
	1355	ALLOCATE ( rrtm_lwuflxc_dt(0:0,nzb:nzt_rad+1) )
[1585]	1356
[1709]	1357	rrtm_lwuflx_dt = 0.0_wp
[1691]	1358	rrtm_lwuflxc_dt = 0.0_wp
	1359
[1585]	1360	END SUBROUTINE read_sounding_data
	1361
	1362
	1363	!------------------------------------------------------------------------------!
	1364	! Description:
	1365	! ------------
[1682]	1366	!> Read trace gas data from file
[1585]	1367	!------------------------------------------------------------------------------!
	1368	SUBROUTINE read_trace_gas_data
	1369
	1370	USE netcdf_control
	1371	USE rrsw_ncpar
	1372
	1373	IMPLICIT NONE
	1374
[1691]	1375	INTEGER(iwp), PARAMETER :: num_trace_gases = 9 !< number of trace gases (absorbers)
[1585]	1376
[1691]	1377	CHARACTER(LEN=5), DIMENSION(num_trace_gases), PARAMETER :: & !< trace gas names
[1585]	1378	trace_names = (/'O3 ', 'CO2 ', 'CH4 ', 'N2O ', 'O2 ', &
	1379	'CFC11', 'CFC12', 'CFC22', 'CCL4 '/)
	1380
[1691]	1381	INTEGER(iwp) :: id, & !< NetCDF id
	1382	k, & !< loop index
	1383	m, & !< loop index
	1384	n, & !< loop index
	1385	nabs, & !< number of absorbers
	1386	np, & !< number of pressure levels
	1387	id_abs, & !< NetCDF id of the respective absorber
	1388	id_dim, & !< NetCDF id of asborber's dimension
	1389	id_var !< NetCDf id ot the absorber
[1585]	1390
	1391	REAL(wp) :: p_mls_l, p_mls_u, p_wgt_l, p_wgt_u, p_mls_m
	1392
	1393
[1682]	1394	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_mls, & !< pressure levels for the absorbers
	1395	rrtm_play_tmp, & !< temporary array for pressure zu-levels
	1396	rrtm_plev_tmp, & !< temporary array for pressure zw-levels
	1397	trace_path_tmp !< temporary array for storing trace gas path data
[1585]	1398
[1682]	1399	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: trace_mls, & !< array for storing the absorber amounts
	1400	trace_mls_path, & !< array for storing trace gas path data
	1401	trace_mls_tmp !< temporary array for storing trace gas data
[1585]	1402
	1403
	1404	!
	1405	!-- In case of updates, deallocate arrays first (sufficient to check one
	1406	!-- array as the others are automatically allocated)
	1407	IF ( ALLOCATED ( rrtm_o3vmr ) ) THEN
	1408	DEALLOCATE ( rrtm_o3vmr )
	1409	DEALLOCATE ( rrtm_co2vmr )
	1410	DEALLOCATE ( rrtm_ch4vmr )
	1411	DEALLOCATE ( rrtm_n2ovmr )
	1412	DEALLOCATE ( rrtm_o2vmr )
	1413	DEALLOCATE ( rrtm_cfc11vmr )
	1414	DEALLOCATE ( rrtm_cfc12vmr )
	1415	DEALLOCATE ( rrtm_cfc22vmr )
	1416	DEALLOCATE ( rrtm_ccl4vmr )
	1417	ENDIF
	1418
	1419	!
	1420	!-- Allocate trace gas profiles
	1421	ALLOCATE ( rrtm_o3vmr(0:0,1:nzt_rad+1) )
	1422	ALLOCATE ( rrtm_co2vmr(0:0,1:nzt_rad+1) )
	1423	ALLOCATE ( rrtm_ch4vmr(0:0,1:nzt_rad+1) )
	1424	ALLOCATE ( rrtm_n2ovmr(0:0,1:nzt_rad+1) )
	1425	ALLOCATE ( rrtm_o2vmr(0:0,1:nzt_rad+1) )
	1426	ALLOCATE ( rrtm_cfc11vmr(0:0,1:nzt_rad+1) )
	1427	ALLOCATE ( rrtm_cfc12vmr(0:0,1:nzt_rad+1) )
	1428	ALLOCATE ( rrtm_cfc22vmr(0:0,1:nzt_rad+1) )
	1429	ALLOCATE ( rrtm_ccl4vmr(0:0,1:nzt_rad+1) )
	1430
	1431	!
	1432	!-- Open file for reading
	1433	nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id )
	1434	CALL handle_netcdf_error( 'netcdf', 549 )
	1435	!
	1436	!-- Inquire dimension ids and dimensions
	1437	nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim )
	1438	CALL handle_netcdf_error( 'netcdf', 550 )
	1439	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = np)
	1440	CALL handle_netcdf_error( 'netcdf', 550 )
	1441
	1442	nc_stat = NF90_INQ_DIMID( id, "Absorber", id_dim )
	1443	CALL handle_netcdf_error( 'netcdf', 550 )
	1444	nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = nabs )
	1445	CALL handle_netcdf_error( 'netcdf', 550 )
	1446
	1447
	1448	!
	1449	!-- Allocate pressure, and trace gas arrays
	1450	ALLOCATE( p_mls(1:np) )
	1451	ALLOCATE( trace_mls(1:num_trace_gases,1:np) )
	1452	ALLOCATE( trace_mls_tmp(1:nabs,1:np) )
	1453
	1454
	1455	nc_stat = NF90_INQ_VARID( id, "Pressure", id_var )
	1456	CALL handle_netcdf_error( 'netcdf', 550 )
	1457	nc_stat = NF90_GET_VAR( id, id_var, p_mls )
	1458	CALL handle_netcdf_error( 'netcdf', 550 )
	1459
	1460	nc_stat = NF90_INQ_VARID( id, "AbsorberAmountMLS", id_var )
	1461	CALL handle_netcdf_error( 'netcdf', 550 )
	1462	nc_stat = NF90_GET_VAR( id, id_var, trace_mls_tmp )
	1463	CALL handle_netcdf_error( 'netcdf', 550 )
	1464
	1465
	1466	!
	1467	!-- Write absorber amounts (mls) to trace_mls
	1468	DO n = 1, num_trace_gases
	1469	CALL getAbsorberIndex( TRIM( trace_names(n) ), id_abs )
	1470
	1471	trace_mls(n,1:np) = trace_mls_tmp(id_abs,1:np)
	1472
	1473	!
	1474	!-- Replace missing values by zero
	1475	WHERE ( trace_mls(n,:) > 2.0_wp )
	1476	trace_mls(n,:) = 0.0_wp
	1477	END WHERE
	1478	END DO
	1479
	1480	DEALLOCATE ( trace_mls_tmp )
	1481
	1482	nc_stat = NF90_CLOSE( id )
	1483	CALL handle_netcdf_error( 'netcdf', 551 )
	1484
	1485	!
	1486	!-- Add extra pressure level for calculations of the trace gas paths
	1487	ALLOCATE ( rrtm_play_tmp(1:nzt_rad+1) )
	1488	ALLOCATE ( rrtm_plev_tmp(1:nzt_rad+2) )
	1489
	1490	rrtm_play_tmp(1:nzt_rad) = rrtm_play(0,1:nzt_rad)
	1491	rrtm_plev_tmp(1:nzt_rad+1) = rrtm_plev(0,1:nzt_rad+1)
	1492	rrtm_play_tmp(nzt_rad+1) = rrtm_plev(0,nzt_rad+1) * 0.5_wp
	1493	rrtm_plev_tmp(nzt_rad+2) = MIN( 1.0E-4_wp, 0.25_wp &
	1494	* rrtm_plev(0,nzt_rad+1) )
	1495
	1496	!
	1497	!-- Calculate trace gas path (zero at surface) with interpolation to the
	1498	!-- sounding levels
	1499	ALLOCATE ( trace_mls_path(1:nzt_rad+2,1:num_trace_gases) )
	1500
	1501	trace_mls_path(nzb+1,:) = 0.0_wp
	1502
	1503	DO k = nzb+2, nzt_rad+2
	1504	DO m = 1, num_trace_gases
	1505	trace_mls_path(k,m) = trace_mls_path(k-1,m)
	1506
	1507	!
	1508	!-- When the pressure level is higher than the trace gas pressure
	1509	!-- level, assume that
[1691]	1510	IF ( rrtm_plev_tmp(k-1) > p_mls(1) ) THEN
[1585]	1511
	1512	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,1) &
	1513	* ( rrtm_plev_tmp(k-1) &
	1514	- MAX( p_mls(1), rrtm_plev_tmp(k) ) &
	1515	) / g
	1516	ENDIF
	1517
	1518	!
	1519	!-- Integrate for each sounding level from the contributing p_mls
	1520	!-- levels
	1521	DO n = 2, np
	1522	!
	1523	!-- Limit p_mls so that it is within the model level
	1524	p_mls_u = MIN( rrtm_plev_tmp(k-1), &
	1525	MAX( rrtm_plev_tmp(k), p_mls(n) ) )
	1526	p_mls_l = MIN( rrtm_plev_tmp(k-1), &
	1527	MAX( rrtm_plev_tmp(k), p_mls(n-1) ) )
	1528
[1691]	1529	IF ( p_mls_l > p_mls_u ) THEN
[1585]	1530
	1531	!
	1532	!-- Calculate weights for interpolation
	1533	p_mls_m = 0.5_wp * (p_mls_l + p_mls_u)
	1534	p_wgt_u = (p_mls(n-1) - p_mls_m) / (p_mls(n-1) - p_mls(n))
	1535	p_wgt_l = (p_mls_m - p_mls(n)) / (p_mls(n-1) - p_mls(n))
	1536
	1537	!
	1538	!-- Add level to trace gas path
	1539	trace_mls_path(k,m) = trace_mls_path(k,m) &
	1540	+ ( p_wgt_u * trace_mls(m,n) &
	1541	+ p_wgt_l * trace_mls(m,n-1) ) &
[1691]	1542	* (p_mls_l - p_mls_u) / g
[1585]	1543	ENDIF
	1544	ENDDO
	1545
[1691]	1546	IF ( rrtm_plev_tmp(k) < p_mls(np) ) THEN
[1585]	1547	trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,np) &
	1548	* ( MIN( rrtm_plev_tmp(k-1), p_mls(np) ) &
	1549	- rrtm_plev_tmp(k) &
	1550	) / g
	1551	ENDIF
[1496]	1552	ENDDO
	1553	ENDDO
	1554
	1555
[1585]	1556	!
	1557	!-- Prepare trace gas path profiles
	1558	ALLOCATE ( trace_path_tmp(1:nzt_rad+1) )
[1496]	1559
[1585]	1560	DO m = 1, num_trace_gases
	1561
	1562	trace_path_tmp(1:nzt_rad+1) = ( trace_mls_path(2:nzt_rad+2,m) &
	1563	- trace_mls_path(1:nzt_rad+1,m) ) * g &
	1564	/ ( rrtm_plev_tmp(1:nzt_rad+1) &
	1565	- rrtm_plev_tmp(2:nzt_rad+2) )
	1566
	1567	!
	1568	!-- Save trace gas paths to the respective arrays
	1569	SELECT CASE ( TRIM( trace_names(m) ) )
	1570
	1571	CASE ( 'O3' )
	1572
	1573	rrtm_o3vmr(0,:) = trace_path_tmp(:)
	1574
	1575	CASE ( 'CO2' )
	1576
	1577	rrtm_co2vmr(0,:) = trace_path_tmp(:)
	1578
	1579	CASE ( 'CH4' )
	1580
	1581	rrtm_ch4vmr(0,:) = trace_path_tmp(:)
	1582
	1583	CASE ( 'N2O' )
	1584
	1585	rrtm_n2ovmr(0,:) = trace_path_tmp(:)
	1586
	1587	CASE ( 'O2' )
	1588
	1589	rrtm_o2vmr(0,:) = trace_path_tmp(:)
	1590
	1591	CASE ( 'CFC11' )
	1592
	1593	rrtm_cfc11vmr(0,:) = trace_path_tmp(:)
	1594
	1595	CASE ( 'CFC12' )
	1596
	1597	rrtm_cfc12vmr(0,:) = trace_path_tmp(:)
	1598
	1599	CASE ( 'CFC22' )
	1600
	1601	rrtm_cfc22vmr(0,:) = trace_path_tmp(:)
	1602
	1603	CASE ( 'CCL4' )
	1604
	1605	rrtm_ccl4vmr(0,:) = trace_path_tmp(:)
	1606
	1607	CASE DEFAULT
	1608
	1609	END SELECT
	1610
	1611	ENDDO
	1612
	1613	DEALLOCATE ( trace_path_tmp )
	1614	DEALLOCATE ( trace_mls_path )
	1615	DEALLOCATE ( rrtm_play_tmp )
	1616	DEALLOCATE ( rrtm_plev_tmp )
	1617	DEALLOCATE ( trace_mls )
	1618	DEALLOCATE ( p_mls )
	1619
	1620	END SUBROUTINE read_trace_gas_data
	1621
	1622	#endif
	1623
	1624
[1551]	1625	!------------------------------------------------------------------------------!
	1626	! Description:
	1627	! ------------
[1682]	1628	!> Calculate temperature tendency due to radiative cooling/heating.
	1629	!> Cache-optimized version.
[1551]	1630	!------------------------------------------------------------------------------!
[1585]	1631	SUBROUTINE radiation_tendency_ij ( i, j, tend )
[1496]	1632
[1585]	1633	USE cloud_parameters, &
[1691]	1634	ONLY: pt_d_t
[1551]	1635
[1585]	1636	IMPLICIT NONE
	1637
[1691]	1638	INTEGER(iwp) :: i, j, k !< loop indices
[1585]	1639
[1691]	1640	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend !< pt tendency term
[1585]	1641
	1642	#if defined ( __rrtmg )
	1643	!
[1691]	1644	!-- Calculate tendency based on heating rate
[1585]	1645	DO k = nzb+1, nzt+1
[1691]	1646	tend(k,j,i) = tend(k,j,i) + (rad_lw_hr(k,j,i) + rad_sw_hr(k,j,i)) &
	1647	* pt_d_t(k) * d_seconds_hour
[1585]	1648	ENDDO
	1649
	1650	#endif
	1651
	1652	END SUBROUTINE radiation_tendency_ij
	1653
	1654
[1551]	1655	!------------------------------------------------------------------------------!
	1656	! Description:
	1657	! ------------
[1682]	1658	!> Calculate temperature tendency due to radiative cooling/heating.
	1659	!> Vector-optimized version
[1551]	1660	!------------------------------------------------------------------------------!
[1585]	1661	SUBROUTINE radiation_tendency ( tend )
[1551]	1662
[1585]	1663	USE cloud_parameters, &
[1691]	1664	ONLY: pt_d_t
[1551]	1665
[1585]	1666	USE indices, &
	1667	ONLY: nxl, nxr, nyn, nys
	1668
	1669	IMPLICIT NONE
	1670
[1691]	1671	INTEGER(iwp) :: i, j, k !< loop indices
[1585]	1672
[1691]	1673	REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend !< pt tendency term
[1585]	1674
	1675	#if defined ( __rrtmg )
[1691]	1676	!
	1677	!-- Calculate tendency based on heating rate
[1585]	1678	DO i = nxl, nxr
	1679	DO j = nys, nyn
	1680	DO k = nzb+1, nzt+1
[1691]	1681	tend(k,j,i) = tend(k,j,i) + ( rad_lw_hr(k,j,i) &
	1682	+ rad_sw_hr(k,j,i) ) * pt_d_t(k) &
	1683	* d_seconds_hour
[1585]	1684	ENDDO
	1685	ENDDO
	1686	ENDDO
	1687	#endif
	1688
	1689	END SUBROUTINE radiation_tendency
	1690
[1496]	1691	END MODULE radiation_model_mod

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

| Impressum | ©Leibniz Universität Hannover |