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source: palm/trunk/SOURCE/plant_canopy_model_mod.f90 @ 3294

Last change on this file since 3294 was 3294, checked in by raasch, 6 years ago
modularization of the ocean code
Property svn:keywords set to `Id`
File size: 75.9 KB

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[1826]	1	!> @file plant_canopy_model_mod.f90
[2000]	2	!------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1036]	4	!
[2000]	5	! PALM is free software: you can redistribute it and/or modify it under the
	6	! terms of the GNU General Public License as published by the Free Software
	7	! Foundation, either version 3 of the License, or (at your option) any later
	8	! version.
[1036]	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	!
[2718]	17	! Copyright 1997-2018 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[257]	20	! Current revisions:
[2977]	21	! ------------------
[2214]	22	!
[3049]	23	!
[2214]	24	! Former revisions:
	25	! -----------------
	26	! $Id: plant_canopy_model_mod.f90 3294 2018-10-01 02:37:10Z raasch $
[3294]	27	! ocean renamed ocean_mode
	28	!
	29	! 3274 2018-09-24 15:42:55Z knoop
[3274]	30	! Modularization of all bulk cloud physics code components
	31	!
	32	! 3248 2018-09-14 09:42:06Z sward
[3248]	33	! Minor formating changes
	34	!
	35	! 3246 2018-09-13 15:14:50Z sward
[3246]	36	! Added error handling for input namelist via parin_fail_message
	37	!
	38	! 3241 2018-09-12 15:02:00Z raasch
[3241]	39	! unused variables removed
	40	!
	41	! 3065 2018-06-12 07:03:02Z Giersch
[3065]	42	! dz was replaced by the help of zw to allow for vertical stretching
	43	!
	44	! 3049 2018-05-29 13:52:36Z Giersch
[3049]	45	! Error messages revised
	46	!
	47	! 3045 2018-05-28 07:55:41Z Giersch
[3045]	48	! Error message revised
	49	!
	50	! 3022 2018-05-18 11:12:35Z suehring
[3022]	51	! Bugfix in allocation of transpiration rate
	52	!
	53	! 3014 2018-05-09 08:42:38Z maronga
[3014]	54	! Bugfix: nzb_do and nzt_do were not used for 3d data output
	55	! Added pc_transpiration_rate
	56	!
	57	! 2977 2018-04-17 10:27:57Z kanani
[2977]	58	! Implement changes from branch radiation (r2948-2971) with minor modifications,
	59	! plus some formatting.
	60	! (moh.hefny):
	61	! Add plant canopy type to account for changes in LAD (based on the changes
	62	! done by Resler & Pavel) and correct the error message to PALM Standard.
	63	!
	64	! 2932 2018-03-26 09:39:22Z maronga
[2932]	65	! renamed canopy_par to plant_canopy_parameters
	66	!
	67	! 2920 2018-03-22 11:22:01Z kanani
[2920]	68	! Move usm_lad_rma and prototype_lad to radiation_model (moh.hefny)
	69	!
	70	! 2892 2018-03-14 15:06:29Z suehring
[2892]	71	! Bugfix, read separate ASCII LAD files for parent and child model.
	72	!
	73	! 2770 2018-01-25 15:10:09Z kanani
[2770]	74	! Correction of parameter check
	75	!
	76	! 2768 2018-01-24 15:38:29Z kanani
[2768]	77	! Added check for output quantity pcm_heatrate, some formatting
	78	!
	79	! 2766 2018-01-22 17:17:47Z kanani
[2766]	80	! Increased LEN of canopy mode to 30
	81	!
	82	! 2746 2018-01-15 12:06:04Z suehring
[2746]	83	! Move flag plant canopy to modules
	84	!
	85	! 2718 2018-01-02 08:49:38Z maronga
[2716]	86	! Corrected "Former revisions" section
	87	!
	88	! 2701 2017-12-15 15:40:50Z suehring
	89	! Changes from last commit documented
	90	!
	91	! 2698 2017-12-14 18:46:24Z suehring
[2701]	92	! Bugfix in get_topography_top_index
	93	!
[2716]	94	! 2696 2017-12-14 17:12:51Z kanani
	95	! Change in file header (GPL part)
[2696]	96	! Bugfix for vertical loop index pch_index in case of Netcdf input
	97	! Introduce 2D index array incorporate canopy top index
	98	! Check if canopy on top of topography do not exceed vertical dimension
	99	! Add check for canopy_mode in case of Netcdf input.
	100	! Enable _FillValue output for 3d quantities
	101	! Bugfix in reading of PIDS leaf area density (MS)
	102	!
	103	! 2669 2017-12-06 16:03:27Z raasch
[2669]	104	! coupling_char removed
	105	!
	106	! 2512 2017-10-04 08:26:59Z raasch
[2512]	107	! upper bounds of 3d output changed from nx+1,ny+1 to nx,ny
	108	! no output of ghost layer data
	109	!
	110	! 2318 2017-07-20 17:27:44Z suehring
[2318]	111	! Get topography top index via Function call
	112	!
	113	! 2317 2017-07-20 17:27:19Z suehring
[2274]	114	! Changed error messages
	115	!
	116	! 2233 2017-05-30 18:08:54Z suehring
[2214]	117	!
[2233]	118	! 2232 2017-05-30 17:47:52Z suehring
	119	! Adjustments to new topography concept
	120	!
[2214]	121	! 2213 2017-04-24 15:10:35Z kanani
[2213]	122	! Bugfix: exchange of ghost points in array pc_heating_rate needed for output
	123	! of pcm_heatrate, onetime ghost point exchange of lad_s after initialization.
	124	! Formatting and clean-up of subroutine pcm_read_plant_canopy_3d,
	125	! minor re-organization of canopy-heating initialization.
[2008]	126	!
[2210]	127	! 2209 2017-04-19 09:34:46Z kanani
	128	! Added 3d output of leaf area density (pcm_lad) and canopy
	129	! heat rate (pcm_heatrate)
	130	!
[2025]	131	! 2024 2016-10-12 16:42:37Z kanani
	132	! Added missing lad_s initialization
	133	!
[2012]	134	! 2011 2016-09-19 17:29:57Z kanani
	135	! Renamed canopy_heat_flux to pc_heating_rate, since the original meaning/
	136	! calculation of the quantity has changed, related to the urban surface model
	137	! and similar future applications.
	138	!
[2008]	139	! 2007 2016-08-24 15:47:17Z kanani
[2007]	140	! Added SUBROUTINE pcm_read_plant_canopy_3d for reading 3d plant canopy data
	141	! from file (new case canopy_mode=read_from_file_3d) in the course of
	142	! introduction of urban surface model,
	143	! introduced variable ext_coef,
	144	! resorted SUBROUTINEs to alphabetical order
[1827]	145	!
[2001]	146	! 2000 2016-08-20 18:09:15Z knoop
	147	! Forced header and separation lines into 80 columns
	148	!
[1961]	149	! 1960 2016-07-12 16:34:24Z suehring
	150	! Separate humidity and passive scalar
	151	!
[1954]	152	! 1953 2016-06-21 09:28:42Z suehring
	153	! Bugfix, lad_s and lad must be public
	154	!
[1827]	155	! 1826 2016-04-07 12:01:39Z maronga
	156	! Further modularization
	157	!
[1722]	158	! 1721 2015-11-16 12:56:48Z raasch
	159	! bugfixes: shf is reduced in areas covered with canopy only,
	160	! canopy is set on top of topography
	161	!
[1683]	162	! 1682 2015-10-07 23:56:08Z knoop
	163	! Code annotations made doxygen readable
	164	!
[1485]	165	! 1484 2014-10-21 10:53:05Z kanani
[1484]	166	! Changes due to new module structure of the plant canopy model:
	167	! module plant_canopy_model_mod now contains a subroutine for the
[1826]	168	! initialization of the canopy model (pcm_init),
[1484]	169	! limitation of the canopy drag (previously accounted for by calculation of
	170	! a limiting canopy timestep for the determination of the maximum LES timestep
	171	! in subroutine timestep) is now realized by the calculation of pre-tendencies
[1826]	172	! and preliminary velocities in subroutine pcm_tendency,
	173	! some redundant MPI communication removed in subroutine pcm_init
[1484]	174	! (was previously in init_3d_model),
	175	! unnecessary 3d-arrays lad_u, lad_v, lad_w removed - lad information on the
	176	! respective grid is now provided only by lad_s (e.g. in the calculation of
	177	! the tendency terms or of cum_lai_hf),
	178	! drag_coefficient, lai, leaf_surface_concentration,
	179	! scalar_exchange_coefficient, sec and sls renamed to canopy_drag_coeff,
	180	! cum_lai_hf, leaf_surface_conc, leaf_scalar_exch_coeff, lsec and lsc,
	181	! respectively,
	182	! unnecessary 3d-arrays cdc, lsc and lsec now defined as single-value constants,
	183	! USE-statements and ONLY-lists modified accordingly
[1341]	184	!
	185	! 1340 2014-03-25 19:45:13Z kanani
	186	! REAL constants defined as wp-kind
	187	!
[1321]	188	! 1320 2014-03-20 08:40:49Z raasch
[1320]	189	! ONLY-attribute added to USE-statements,
	190	! kind-parameters added to all INTEGER and REAL declaration statements,
	191	! kinds are defined in new module kinds,
	192	! old module precision_kind is removed,
	193	! revision history before 2012 removed,
	194	! comment fields (!:) to be used for variable explanations added to
	195	! all variable declaration statements
[153]	196	!
[1037]	197	! 1036 2012-10-22 13:43:42Z raasch
	198	! code put under GPL (PALM 3.9)
	199	!
[139]	200	! 138 2007-11-28 10:03:58Z letzel
	201	! Initial revision
	202	!
[138]	203	! Description:
	204	! ------------
[1682]	205	!> 1) Initialization of the canopy model, e.g. construction of leaf area density
[1826]	206	!> profile (subroutine pcm_init).
[1682]	207	!> 2) Calculation of sinks and sources of momentum, heat and scalar concentration
[1826]	208	!> due to canopy elements (subroutine pcm_tendency).
[138]	209	!------------------------------------------------------------------------------!
[1682]	210	MODULE plant_canopy_model_mod
	211
[1484]	212	USE arrays_3d, &
[2232]	213	ONLY: dzu, dzw, e, q, s, tend, u, v, w, zu, zw
[138]	214
[1484]	215	USE indices, &
	216	ONLY: nbgp, nxl, nxlg, nxlu, nxr, nxrg, nyn, nyng, nys, nysg, nysv, &
[2317]	217	nz, nzb, nzt
[1484]	218
	219	USE kinds
	220
[2317]	221	USE surface_mod, &
[2698]	222	ONLY: get_topography_top_index_ji
[1484]	223
[2317]	224
[1484]	225	IMPLICIT NONE
	226
	227
[2766]	228	CHARACTER (LEN=30) :: canopy_mode = 'block' !< canopy coverage
[1484]	229
[2696]	230	INTEGER(iwp) :: pch_index = 0 !< plant canopy height/top index
	231	INTEGER(iwp) :: lad_vertical_gradient_level_ind(10) = -9999 !< lad-profile levels (index)
[1484]	232
[2696]	233	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: pch_index_ji !< local plant canopy top
	234
[1682]	235	LOGICAL :: calc_beta_lad_profile = .FALSE. !< switch for calc. of lad from beta func.
[1484]	236
[2696]	237	REAL(wp) :: alpha_lad = 9999999.9_wp !< coefficient for lad calculation
	238	REAL(wp) :: beta_lad = 9999999.9_wp !< coefficient for lad calculation
	239	REAL(wp) :: canopy_drag_coeff = 0.0_wp !< canopy drag coefficient (parameter)
	240	REAL(wp) :: cdc = 0.0_wp !< canopy drag coeff. (abbreviation used in equations)
	241	REAL(wp) :: cthf = 0.0_wp !< canopy top heat flux
	242	REAL(wp) :: dt_plant_canopy = 0.0_wp !< timestep account. for canopy drag
	243	REAL(wp) :: ext_coef = 0.6_wp !< extinction coefficient
	244	REAL(wp) :: lad_surface = 0.0_wp !< lad surface value
	245	REAL(wp) :: lai_beta = 0.0_wp !< leaf area index (lai) for lad calc.
	246	REAL(wp) :: leaf_scalar_exch_coeff = 0.0_wp !< canopy scalar exchange coeff.
	247	REAL(wp) :: leaf_surface_conc = 0.0_wp !< leaf surface concentration
[2768]	248	REAL(wp) :: lsc = 0.0_wp !< leaf surface concentration
[2696]	249	REAL(wp) :: lsec = 0.0_wp !< leaf scalar exchange coeff.
[1484]	250
[2696]	251	REAL(wp) :: lad_vertical_gradient(10) = 0.0_wp !< lad gradient
	252	REAL(wp) :: lad_vertical_gradient_level(10) = -9999999.9_wp !< lad-prof. levels (in m)
[1484]	253
[2977]	254	REAL(wp) :: lad_type_coef(0:10) = 1.0_wp !< multiplicative coeficients for particular types
	255	!< of plant canopy (e.g. deciduous tree during winter)
	256
[1682]	257	REAL(wp), DIMENSION(:), ALLOCATABLE :: lad !< leaf area density
	258	REAL(wp), DIMENSION(:), ALLOCATABLE :: pre_lad !< preliminary lad
[1484]	259
[2768]	260	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: cum_lai_hf !< cumulative lai for heatflux calc.
	261	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: lad_s !< lad on scalar-grid
	262	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pc_heating_rate !< plant canopy heating rate
[3014]	263	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pc_transpiration_rate !< plant canopy transpiration rate
[1484]	264
	265	SAVE
	266
	267
[138]	268	PRIVATE
[1826]	269
	270	!
	271	!-- Public functions
[2209]	272	PUBLIC pcm_check_data_output, pcm_check_parameters, pcm_data_output_3d, &
	273	pcm_define_netcdf_grid, pcm_header, pcm_init, pcm_parin, pcm_tendency
[138]	274
[1826]	275	!
	276	!-- Public variables and constants
[3014]	277	PUBLIC pc_heating_rate, pc_transpiration_rate, canopy_mode, cthf, dt_plant_canopy, lad, lad_s, &
[2920]	278	pch_index
[2007]	279
[1484]	280
[2209]	281	INTERFACE pcm_check_data_output
	282	MODULE PROCEDURE pcm_check_data_output
	283	END INTERFACE pcm_check_data_output
	284
[1826]	285	INTERFACE pcm_check_parameters
	286	MODULE PROCEDURE pcm_check_parameters
[2209]	287	END INTERFACE pcm_check_parameters
	288
	289	INTERFACE pcm_data_output_3d
	290	MODULE PROCEDURE pcm_data_output_3d
	291	END INTERFACE pcm_data_output_3d
	292
	293	INTERFACE pcm_define_netcdf_grid
	294	MODULE PROCEDURE pcm_define_netcdf_grid
	295	END INTERFACE pcm_define_netcdf_grid
[1826]	296
	297	INTERFACE pcm_header
	298	MODULE PROCEDURE pcm_header
	299	END INTERFACE pcm_header
	300
	301	INTERFACE pcm_init
	302	MODULE PROCEDURE pcm_init
	303	END INTERFACE pcm_init
[138]	304
[1826]	305	INTERFACE pcm_parin
	306	MODULE PROCEDURE pcm_parin
[2007]	307	END INTERFACE pcm_parin
	308
	309	INTERFACE pcm_read_plant_canopy_3d
	310	MODULE PROCEDURE pcm_read_plant_canopy_3d
	311	END INTERFACE pcm_read_plant_canopy_3d
[1826]	312
	313	INTERFACE pcm_tendency
	314	MODULE PROCEDURE pcm_tendency
	315	MODULE PROCEDURE pcm_tendency_ij
	316	END INTERFACE pcm_tendency
[1484]	317
	318
[138]	319	CONTAINS
	320
[2209]	321
	322	!------------------------------------------------------------------------------!
	323	! Description:
	324	! ------------
	325	!> Check data output for plant canopy model
	326	!------------------------------------------------------------------------------!
	327	SUBROUTINE pcm_check_data_output( var, unit )
[1826]	328
[2209]	329
	330	USE control_parameters, &
[3241]	331	ONLY: message_string, urban_surface
[2209]	332
	333	IMPLICIT NONE
	334
	335	CHARACTER (LEN=*) :: unit !<
	336	CHARACTER (LEN=*) :: var !<
	337
	338
	339	SELECT CASE ( TRIM( var ) )
	340
	341	CASE ( 'pcm_heatrate' )
[2770]	342	IF ( cthf == 0.0_wp .AND. .NOT. urban_surface ) THEN
[2768]	343	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	344	'res setting of parameter cthf /= 0.0'
	345	CALL message( 'pcm_check_data_output', 'PA1000', 1, 2, 0, 6, 0 )
	346	ENDIF
[2209]	347	unit = 'K s-1'
	348
[3014]	349	CASE ( 'pcm_transpirationrate' )
	350	unit = 'kg kg-1 s-1'
	351
[2209]	352	CASE ( 'pcm_lad' )
	353	unit = 'm2 m-3'
	354
	355
	356	CASE DEFAULT
	357	unit = 'illegal'
	358
	359	END SELECT
	360
	361
	362	END SUBROUTINE pcm_check_data_output
	363
	364
[1826]	365	!------------------------------------------------------------------------------!
	366	! Description:
	367	! ------------
	368	!> Check parameters routine for plant canopy model
	369	!------------------------------------------------------------------------------!
	370	SUBROUTINE pcm_check_parameters
[138]	371
[1826]	372	USE control_parameters, &
[3274]	373	ONLY: coupling_char, message_string
[2696]	374
[3274]	375	USE bulk_cloud_model_mod, &
	376	ONLY: bulk_cloud_model, microphysics_seifert
	377
[2696]	378	USE netcdf_data_input_mod, &
	379	ONLY: input_file_static, input_pids_static
[1826]	380
	381
	382	IMPLICIT NONE
	383
	384
	385	IF ( canopy_drag_coeff == 0.0_wp ) THEN
	386	message_string = 'plant_canopy = .TRUE. requires a non-zero drag '// &
[3046]	387	'coefficient & given value is canopy_drag_coeff = 0.0'
[2768]	388	CALL message( 'pcm_check_parameters', 'PA0041', 1, 2, 0, 6, 0 )
[1826]	389	ENDIF
	390
[3045]	391	IF ( ( alpha_lad /= 9999999.9_wp .AND. beta_lad == 9999999.9_wp ) .OR.&
[1826]	392	beta_lad /= 9999999.9_wp .AND. alpha_lad == 9999999.9_wp ) THEN
	393	message_string = 'using the beta function for the construction ' // &
	394	'of the leaf area density profile requires ' // &
	395	'both alpha_lad and beta_lad to be /= 9999999.9'
[2768]	396	CALL message( 'pcm_check_parameters', 'PA0118', 1, 2, 0, 6, 0 )
[1826]	397	ENDIF
	398
	399	IF ( calc_beta_lad_profile .AND. lai_beta == 0.0_wp ) THEN
	400	message_string = 'using the beta function for the construction ' // &
	401	'of the leaf area density profile requires ' // &
	402	'a non-zero lai_beta, but given value is ' // &
	403	'lai_beta = 0.0'
[2768]	404	CALL message( 'pcm_check_parameters', 'PA0119', 1, 2, 0, 6, 0 )
[1826]	405	ENDIF
	406
	407	IF ( calc_beta_lad_profile .AND. lad_surface /= 0.0_wp ) THEN
[2274]	408	message_string = 'simultaneous setting of alpha_lad /= 9999999.9 '// &
	409	'combined with beta_lad /= 9999999.9 ' // &
[1826]	410	'and lad_surface /= 0.0 is not possible, ' // &
	411	'use either vertical gradients or the beta ' // &
	412	'function for the construction of the leaf area '// &
	413	'density profile'
[2768]	414	CALL message( 'pcm_check_parameters', 'PA0120', 1, 2, 0, 6, 0 )
[1826]	415	ENDIF
	416
[3274]	417	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
[1826]	418	message_string = 'plant_canopy = .TRUE. requires cloud_scheme /=' // &
	419	' seifert_beheng'
[2768]	420	CALL message( 'pcm_check_parameters', 'PA0360', 1, 2, 0, 6, 0 )
[1826]	421	ENDIF
[2696]	422	!
	423	!-- If dynamic input file is used, canopy need to be read from file
	424	IF ( input_pids_static .AND. &
	425	TRIM( canopy_mode ) /= 'read_from_file_3d' ) THEN
	426	message_string = 'Usage of dynamic input file ' // &
	427	TRIM( input_file_static ) // &
	428	TRIM( coupling_char ) // ' requires ' // &
	429	'canopy_mode = read_from_file_3d'
[2768]	430	CALL message( 'pcm_check_parameters', 'PA0999', 1, 2, 0, 6, 0 )
[2696]	431	ENDIF
[1826]	432
	433
	434	END SUBROUTINE pcm_check_parameters
	435
	436
[138]	437	!------------------------------------------------------------------------------!
[2209]	438	!
[1484]	439	! Description:
	440	! ------------
[2209]	441	!> Subroutine defining 3D output variables
	442	!------------------------------------------------------------------------------!
[3014]	443	SUBROUTINE pcm_data_output_3d( av, variable, found, local_pf, fill_value, &
	444	nzb_do, nzt_do )
	445
[2209]	446	USE indices
	447
	448	USE kinds
	449
	450
	451	IMPLICIT NONE
	452
	453	CHARACTER (LEN=*) :: variable !<
	454
[2696]	455	INTEGER(iwp) :: av !<
	456	INTEGER(iwp) :: i !<
	457	INTEGER(iwp) :: j !<
	458	INTEGER(iwp) :: k !<
	459	INTEGER(iwp) :: k_topo !< topography top index
[3014]	460	INTEGER(iwp) :: nzb_do !< lower limit of the data output (usually 0)
	461	INTEGER(iwp) :: nzt_do !< vertical upper limit of the data output (usually nz_do3d)
[2209]	462
	463	LOGICAL :: found !<
	464
[2696]	465	REAL(wp) :: fill_value
[3014]	466	REAL(sp), DIMENSION(nxl:nxr,nys:nyn,nzb_do:nzt_do) :: local_pf !<
[2209]	467
	468
	469	found = .TRUE.
	470
[2696]	471	local_pf = REAL( fill_value, KIND = 4 )
[2209]	472
	473	SELECT CASE ( TRIM( variable ) )
	474
	475	CASE ( 'pcm_heatrate' )
	476	IF ( av == 0 ) THEN
[2512]	477	DO i = nxl, nxr
	478	DO j = nys, nyn
[2696]	479	IF ( pch_index_ji(j,i) /= 0 ) THEN
[2698]	480	k_topo = get_topography_top_index_ji( j, i, 's' )
[2696]	481	DO k = k_topo, k_topo + pch_index_ji(j,i)
	482	local_pf(i,j,k) = pc_heating_rate(k-k_topo,j,i)
	483	ENDDO
	484	ENDIF
[2209]	485	ENDDO
	486	ENDDO
	487	ENDIF
[3014]	488
	489	CASE ( 'pcm_transpirationrate' )
	490	IF ( av == 0 ) THEN
	491	DO i = nxl, nxr
	492	DO j = nys, nyn
	493	IF ( pch_index_ji(j,i) /= 0 ) THEN
	494	k_topo = get_topography_top_index_ji( j, i, 's' )
	495	DO k = k_topo, k_topo + pch_index_ji(j,i)
	496	local_pf(i,j,k) = pc_transpiration_rate(k-k_topo,j,i)
	497	ENDDO
	498	ENDIF
	499	ENDDO
	500	ENDDO
	501	ENDIF
[2209]	502
	503	CASE ( 'pcm_lad' )
	504	IF ( av == 0 ) THEN
[2512]	505	DO i = nxl, nxr
	506	DO j = nys, nyn
[2696]	507	IF ( pch_index_ji(j,i) /= 0 ) THEN
[2698]	508	k_topo = get_topography_top_index_ji( j, i, 's' )
[2696]	509	DO k = k_topo, k_topo + pch_index_ji(j,i)
	510	local_pf(i,j,k) = lad_s(k-k_topo,j,i)
	511	ENDDO
	512	ENDIF
[2209]	513	ENDDO
	514	ENDDO
	515	ENDIF
	516
	517
	518	CASE DEFAULT
	519	found = .FALSE.
	520
	521	END SELECT
	522
	523
	524	END SUBROUTINE pcm_data_output_3d
	525
	526	!------------------------------------------------------------------------------!
	527	!
	528	! Description:
	529	! ------------
	530	!> Subroutine defining appropriate grid for netcdf variables.
	531	!> It is called from subroutine netcdf.
	532	!------------------------------------------------------------------------------!
	533	SUBROUTINE pcm_define_netcdf_grid( var, found, grid_x, grid_y, grid_z )
	534
	535	IMPLICIT NONE
	536
	537	CHARACTER (LEN=*), INTENT(IN) :: var !<
	538	LOGICAL, INTENT(OUT) :: found !<
	539	CHARACTER (LEN=*), INTENT(OUT) :: grid_x !<
	540	CHARACTER (LEN=*), INTENT(OUT) :: grid_y !<
	541	CHARACTER (LEN=*), INTENT(OUT) :: grid_z !<
	542
	543	found = .TRUE.
	544
	545	!
	546	!-- Check for the grid
	547	SELECT CASE ( TRIM( var ) )
	548
[3014]	549	CASE ( 'pcm_heatrate', 'pcm_lad', 'pcm_transpirationrate')
[2209]	550	grid_x = 'x'
	551	grid_y = 'y'
	552	grid_z = 'zu'
	553
	554	CASE DEFAULT
	555	found = .FALSE.
	556	grid_x = 'none'
	557	grid_y = 'none'
	558	grid_z = 'none'
	559	END SELECT
	560
	561	END SUBROUTINE pcm_define_netcdf_grid
	562
	563
	564	!------------------------------------------------------------------------------!
	565	! Description:
	566	! ------------
[1826]	567	!> Header output for plant canopy model
	568	!------------------------------------------------------------------------------!
	569	SUBROUTINE pcm_header ( io )
	570
	571	USE control_parameters, &
[3065]	572	ONLY: passive_scalar
[1826]	573
	574
	575	IMPLICIT NONE
	576
	577	CHARACTER (LEN=10) :: coor_chr !<
	578
	579	CHARACTER (LEN=86) :: coordinates !<
	580	CHARACTER (LEN=86) :: gradients !<
	581	CHARACTER (LEN=86) :: leaf_area_density !<
	582	CHARACTER (LEN=86) :: slices !<
	583
	584	INTEGER(iwp) :: i !<
	585	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
	586	INTEGER(iwp) :: k !<
	587
	588	REAL(wp) :: canopy_height !< canopy height (in m)
	589
[3065]	590	canopy_height = zw(pch_index)
[1826]	591
	592	WRITE ( io, 1 ) canopy_mode, canopy_height, pch_index, &
	593	canopy_drag_coeff
	594	IF ( passive_scalar ) THEN
	595	WRITE ( io, 2 ) leaf_scalar_exch_coeff, &
	596	leaf_surface_conc
	597	ENDIF
	598
	599	!
	600	!-- Heat flux at the top of vegetation
	601	WRITE ( io, 3 ) cthf
	602
	603	!
	604	!-- Leaf area density profile, calculated either from given vertical
	605	!-- gradients or from beta probability density function.
	606	IF ( .NOT. calc_beta_lad_profile ) THEN
	607
	608	!-- Building output strings, starting with surface value
	609	WRITE ( leaf_area_density, '(F7.4)' ) lad_surface
	610	gradients = '------'
	611	slices = ' 0'
	612	coordinates = ' 0.0'
	613	i = 1
	614	DO WHILE ( i < 11 .AND. lad_vertical_gradient_level_ind(i) &
	615	/= -9999 )
	616
	617	WRITE (coor_chr,'(F7.2)') lad(lad_vertical_gradient_level_ind(i))
	618	leaf_area_density = TRIM( leaf_area_density ) // ' ' // &
	619	TRIM( coor_chr )
	620
	621	WRITE (coor_chr,'(F7.2)') lad_vertical_gradient(i)
	622	gradients = TRIM( gradients ) // ' ' // TRIM( coor_chr )
	623
	624	WRITE (coor_chr,'(I7)') lad_vertical_gradient_level_ind(i)
	625	slices = TRIM( slices ) // ' ' // TRIM( coor_chr )
	626
	627	WRITE (coor_chr,'(F7.1)') lad_vertical_gradient_level(i)
	628	coordinates = TRIM( coordinates ) // ' ' // TRIM( coor_chr )
	629
	630	i = i + 1
	631	ENDDO
	632
	633	WRITE ( io, 4 ) TRIM( coordinates ), TRIM( leaf_area_density ), &
	634	TRIM( gradients ), TRIM( slices )
	635
	636	ELSE
	637
	638	WRITE ( leaf_area_density, '(F7.4)' ) lad_surface
	639	coordinates = ' 0.0'
	640
	641	DO k = 1, pch_index
	642
	643	WRITE (coor_chr,'(F7.2)') lad(k)
	644	leaf_area_density = TRIM( leaf_area_density ) // ' ' // &
	645	TRIM( coor_chr )
	646
	647	WRITE (coor_chr,'(F7.1)') zu(k)
	648	coordinates = TRIM( coordinates ) // ' ' // TRIM( coor_chr )
	649
	650	ENDDO
	651
	652	WRITE ( io, 5 ) TRIM( coordinates ), TRIM( leaf_area_density ), &
	653	alpha_lad, beta_lad, lai_beta
	654
	655	ENDIF
	656
	657	1 FORMAT (//' Vegetation canopy (drag) model:'/ &
	658	' ------------------------------'// &
	659	' Canopy mode: ', A / &
	660	' Canopy height: ',F6.2,'m (',I4,' grid points)' / &
	661	' Leaf drag coefficient: ',F6.2 /)
	662	2 FORMAT (/ ' Scalar exchange coefficient: ',F6.2 / &
	663	' Scalar concentration at leaf surfaces in kg/m**3: ',F6.2 /)
	664	3 FORMAT (' Predefined constant heatflux at the top of the vegetation: ',F6.2, &
	665	' K m/s')
	666	4 FORMAT (/ ' Characteristic levels of the leaf area density:'// &
	667	' Height: ',A,' m'/ &
	668	' Leaf area density: ',A,' m2/m3'/ &
	669	' Gradient: ',A,' m2/m4'/ &
	670	' Gridpoint: ',A)
	671	5 FORMAT (//' Characteristic levels of the leaf area density and coefficients:'&
	672	// ' Height: ',A,' m'/ &
	673	' Leaf area density: ',A,' m2/m3'/ &
	674	' Coefficient alpha: ',F6.2 / &
	675	' Coefficient beta: ',F6.2 / &
	676	' Leaf area index: ',F6.2,' m2/m2' /)
	677
	678	END SUBROUTINE pcm_header
	679
	680
	681	!------------------------------------------------------------------------------!
	682	! Description:
	683	! ------------
[1682]	684	!> Initialization of the plant canopy model
[138]	685	!------------------------------------------------------------------------------!
[1826]	686	SUBROUTINE pcm_init
[1484]	687
	688
	689	USE control_parameters, &
[3294]	690	ONLY: humidity, message_string, ocean_mode, urban_surface
[1484]	691
[2696]	692	USE netcdf_data_input_mod, &
	693	ONLY: leaf_area_density_f
	694
[2232]	695	USE surface_mod, &
	696	ONLY: surf_def_h, surf_lsm_h, surf_usm_h
[1484]	697
	698	IMPLICIT NONE
	699
[2007]	700	INTEGER(iwp) :: i !< running index
	701	INTEGER(iwp) :: j !< running index
	702	INTEGER(iwp) :: k !< running index
[2232]	703	INTEGER(iwp) :: m !< running index
[1484]	704
[2007]	705	REAL(wp) :: int_bpdf !< vertical integral for lad-profile construction
	706	REAL(wp) :: gradient !< gradient for lad-profile construction
	707	REAL(wp) :: canopy_height !< canopy height for lad-profile construction
[3241]	708
[1484]	709	!
	710	!-- Allocate one-dimensional arrays for the computation of the
	711	!-- leaf area density (lad) profile
	712	ALLOCATE( lad(0:nz+1), pre_lad(0:nz+1) )
	713	lad = 0.0_wp
	714	pre_lad = 0.0_wp
	715
	716	!
[1826]	717	!-- Set flag that indicates that the lad-profile shall be calculated by using
	718	!-- a beta probability density function
	719	IF ( alpha_lad /= 9999999.9_wp .AND. beta_lad /= 9999999.9_wp ) THEN
	720	calc_beta_lad_profile = .TRUE.
	721	ENDIF
	722
	723
	724	!
[1484]	725	!-- Compute the profile of leaf area density used in the plant
	726	!-- canopy model. The profile can either be constructed from
	727	!-- prescribed vertical gradients of the leaf area density or by
	728	!-- using a beta probability density function (see e.g. Markkanen et al.,
	729	!-- 2003: Boundary-Layer Meteorology, 106, 437-459)
	730	IF ( .NOT. calc_beta_lad_profile ) THEN
	731
	732	!
	733	!-- Use vertical gradients for lad-profile construction
	734	i = 1
	735	gradient = 0.0_wp
	736
[3294]	737	IF ( .NOT. ocean_mode ) THEN
[1484]	738
	739	lad(0) = lad_surface
	740	lad_vertical_gradient_level_ind(1) = 0
	741
	742	DO k = 1, pch_index
	743	IF ( i < 11 ) THEN
	744	IF ( lad_vertical_gradient_level(i) < zu(k) .AND. &
	745	lad_vertical_gradient_level(i) >= 0.0_wp ) THEN
	746	gradient = lad_vertical_gradient(i)
	747	lad_vertical_gradient_level_ind(i) = k - 1
	748	i = i + 1
	749	ENDIF
	750	ENDIF
	751	IF ( gradient /= 0.0_wp ) THEN
	752	IF ( k /= 1 ) THEN
	753	lad(k) = lad(k-1) + dzu(k) * gradient
	754	ELSE
	755	lad(k) = lad_surface + dzu(k) * gradient
	756	ENDIF
	757	ELSE
	758	lad(k) = lad(k-1)
	759	ENDIF
	760	ENDDO
	761
	762	ENDIF
	763
	764	!
	765	!-- In case of no given leaf area density gradients, choose a vanishing
	766	!-- gradient. This information is used for the HEADER and the RUN_CONTROL
	767	!-- file.
	768	IF ( lad_vertical_gradient_level(1) == -9999999.9_wp ) THEN
	769	lad_vertical_gradient_level(1) = 0.0_wp
	770	ENDIF
	771
	772	ELSE
	773
	774	!
	775	!-- Use beta function for lad-profile construction
	776	int_bpdf = 0.0_wp
[3065]	777	canopy_height = zw(pch_index)
[1484]	778
[2232]	779	DO k = 0, pch_index
[1484]	780	int_bpdf = int_bpdf + &
[1826]	781	( ( ( zw(k) / canopy_height )*( alpha_lad-1.0_wp ) ) &
	782	( ( 1.0_wp - ( zw(k) / canopy_height ) )**( &
	783	beta_lad-1.0_wp ) ) &
	784	* ( ( zw(k+1)-zw(k) ) / canopy_height ) )
[1484]	785	ENDDO
	786
	787	!
	788	!-- Preliminary lad profile (defined on w-grid)
[2232]	789	DO k = 0, pch_index
[1826]	790	pre_lad(k) = lai_beta * &
	791	( ( ( zw(k) / canopy_height )**( alpha_lad-1.0_wp ) ) &
	792	* ( ( 1.0_wp - ( zw(k) / canopy_height ) )**( &
	793	beta_lad-1.0_wp ) ) / int_bpdf &
	794	) / canopy_height
[1484]	795	ENDDO
	796
	797	!
	798	!-- Final lad profile (defined on scalar-grid level, since most prognostic
	799	!-- quantities are defined there, hence, less interpolation is required
	800	!-- when calculating the canopy tendencies)
	801	lad(0) = pre_lad(0)
[2232]	802	DO k = 1, pch_index
[1484]	803	lad(k) = 0.5 * ( pre_lad(k-1) + pre_lad(k) )
	804	ENDDO
	805
	806	ENDIF
	807
	808	!
[2213]	809	!-- Allocate 3D-array for the leaf area density (lad_s).
[1484]	810	ALLOCATE( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	811
	812	!
	813	!-- Initialize canopy parameters cdc (canopy drag coefficient),
	814	!-- lsec (leaf scalar exchange coefficient), lsc (leaf surface concentration)
	815	!-- with the prescribed values
	816	cdc = canopy_drag_coeff
	817	lsec = leaf_scalar_exch_coeff
	818	lsc = leaf_surface_conc
	819
	820	!
	821	!-- Initialization of the canopy coverage in the model domain:
	822	!-- Setting the parameter canopy_mode = 'block' initializes a canopy, which
	823	!-- fully covers the domain surface
	824	SELECT CASE ( TRIM( canopy_mode ) )
	825
	826	CASE( 'block' )
	827
	828	DO i = nxlg, nxrg
	829	DO j = nysg, nyng
	830	lad_s(:,j,i) = lad(:)
	831	ENDDO
	832	ENDDO
	833
[2007]	834	CASE ( 'read_from_file_3d' )
	835	!
[2696]	836	!-- Initialize LAD with data from file. If LAD is given in NetCDF file,
	837	!-- use these values, else take LAD profiles from ASCII file.
	838	!-- Please note, in NetCDF file LAD is only given up to the maximum
	839	!-- canopy top, indicated by leaf_area_density_f%nz.
	840	lad_s = 0.0_wp
	841	IF ( leaf_area_density_f%from_file ) THEN
	842	!
	843	!-- Set also pch_index, used to be the upper bound of the vertical
	844	!-- loops. Therefore, use the global top of the canopy layer.
	845	pch_index = leaf_area_density_f%nz - 1
	846
	847	DO i = nxl, nxr
	848	DO j = nys, nyn
	849	DO k = 0, leaf_area_density_f%nz - 1
	850	IF ( leaf_area_density_f%var(k,j,i) /= &
	851	leaf_area_density_f%fill ) &
	852	lad_s(k,j,i) = leaf_area_density_f%var(k,j,i)
	853	ENDDO
	854	ENDDO
	855	ENDDO
	856	CALL exchange_horiz( lad_s, nbgp )
	857	!
	858	! ASCII file
[2007]	859	!-- Initialize canopy parameters cdc (canopy drag coefficient),
	860	!-- lsec (leaf scalar exchange coefficient), lsc (leaf surface concentration)
	861	!-- from file which contains complete 3D data (separate vertical profiles for
	862	!-- each location).
[2696]	863	ELSE
	864	CALL pcm_read_plant_canopy_3d
	865	ENDIF
[2007]	866
[1484]	867	CASE DEFAULT
	868	!
[2007]	869	!-- The DEFAULT case is reached either if the parameter
	870	!-- canopy mode contains a wrong character string or if the
	871	!-- user has coded a special case in the user interface.
	872	!-- There, the subroutine user_init_plant_canopy checks
	873	!-- which of these two conditions applies.
	874	CALL user_init_plant_canopy
[1484]	875
	876	END SELECT
[2696]	877	!
	878	!-- Initialize 2D index array indicating canopy top index.
	879	ALLOCATE( pch_index_ji(nysg:nyng,nxlg:nxrg) )
	880	pch_index_ji = 0
[1484]	881
[2696]	882	DO i = nxl, nxr
	883	DO j = nys, nyn
	884	DO k = 0, pch_index
	885	IF ( lad_s(k,j,i) /= 0 ) pch_index_ji(j,i) = k
	886	ENDDO
[1484]	887	!
[2696]	888	!-- Check whether topography and local vegetation on top exceed
	889	!-- height of the model domain.
[2698]	890	k = get_topography_top_index_ji( j, i, 's' )
[2696]	891	IF ( k + pch_index_ji(j,i) >= nzt + 1 ) THEN
	892	message_string = 'Local vegetation height on top of ' // &
	893	'topography exceeds height of model domain.'
	894	CALL message( 'pcm_init', 'PA0999', 2, 2, 0, 6, 0 )
	895	ENDIF
	896
	897	ENDDO
	898	ENDDO
	899
	900	CALL exchange_horiz_2d_int( pch_index_ji, nys, nyn, nxl, nxr, nbgp )
	901
	902	!
[2011]	903	!-- Initialization of the canopy heat source distribution due to heating
	904	!-- of the canopy layers by incoming solar radiation, in case that a non-zero
	905	!-- value is set for the canopy top heat flux (cthf), which equals the
	906	!-- available net radiation at canopy top.
	907	!-- The heat source distribution is calculated by a decaying exponential
	908	!-- function of the downward cumulative leaf area index (cum_lai_hf),
	909	!-- assuming that the foliage inside the plant canopy is heated by solar
	910	!-- radiation penetrating the canopy layers according to the distribution
	911	!-- of net radiation as suggested by Brown & Covey (1966; Agric. Meteorol. 3,
	912	!-- 73â96). This approach has been applied e.g. by Shaw & Schumann (1992;
[2213]	913	!-- Bound.-Layer Meteorol. 61, 47â64).
	914	!-- When using the urban surface model (USM), canopy heating (pc_heating_rate)
	915	!-- by radiation is calculated in the USM.
[2768]	916	IF ( cthf /= 0.0_wp .AND. .NOT. urban_surface ) THEN
[2213]	917
	918	ALLOCATE( cum_lai_hf(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[3022]	919	pc_heating_rate(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1484]	920	!
[2011]	921	!-- Piecewise calculation of the cumulative leaf area index by vertical
[1484]	922	!-- integration of the leaf area density
	923	cum_lai_hf(:,:,:) = 0.0_wp
	924	DO i = nxlg, nxrg
	925	DO j = nysg, nyng
[2696]	926	DO k = pch_index_ji(j,i)-1, 0, -1
	927	IF ( k == pch_index_ji(j,i)-1 ) THEN
[1484]	928	cum_lai_hf(k,j,i) = cum_lai_hf(k+1,j,i) + &
	929	( 0.5_wp * lad_s(k+1,j,i) * &
	930	( zw(k+1) - zu(k+1) ) ) + &
	931	( 0.5_wp * ( 0.5_wp * ( lad_s(k+1,j,i) + &
	932	lad_s(k,j,i) ) + &
	933	lad_s(k+1,j,i) ) * &
	934	( zu(k+1) - zw(k) ) )
	935	ELSE
	936	cum_lai_hf(k,j,i) = cum_lai_hf(k+1,j,i) + &
	937	( 0.5_wp * ( 0.5_wp * ( lad_s(k+2,j,i) + &
	938	lad_s(k+1,j,i) ) + &
	939	lad_s(k+1,j,i) ) * &
	940	( zw(k+1) - zu(k+1) ) ) + &
	941	( 0.5_wp * ( 0.5_wp * ( lad_s(k+1,j,i) + &
	942	lad_s(k,j,i) ) + &
	943	lad_s(k+1,j,i) ) * &
	944	( zu(k+1) - zw(k) ) )
	945	ENDIF
	946	ENDDO
	947	ENDDO
	948	ENDDO
	949
[2232]	950	!
	951	!-- In areas with canopy the surface value of the canopy heat
	952	!-- flux distribution overrides the surface heat flux (shf)
	953	!-- Start with default surface type
	954	DO m = 1, surf_def_h(0)%ns
	955	k = surf_def_h(0)%k(m)
	956	IF ( cum_lai_hf(0,j,i) /= 0.0_wp ) &
	957	surf_def_h(0)%shf(m) = cthf * exp( -ext_coef * cum_lai_hf(0,j,i) )
	958	ENDDO
[1484]	959	!
[2232]	960	!-- Natural surfaces
	961	DO m = 1, surf_lsm_h%ns
	962	k = surf_lsm_h%k(m)
	963	IF ( cum_lai_hf(0,j,i) /= 0.0_wp ) &
	964	surf_lsm_h%shf(m) = cthf * exp( -ext_coef * cum_lai_hf(0,j,i) )
	965	ENDDO
	966	!
	967	!-- Urban surfaces
	968	DO m = 1, surf_usm_h%ns
	969	k = surf_usm_h%k(m)
	970	IF ( cum_lai_hf(0,j,i) /= 0.0_wp ) &
	971	surf_usm_h%shf(m) = cthf * exp( -ext_coef * cum_lai_hf(0,j,i) )
	972	ENDDO
	973	!
	974	!
[2011]	975	!-- Calculation of the heating rate (K/s) within the different layers of
[2232]	976	!-- the plant canopy. Calculation is only necessary in areas covered with
	977	!-- canopy.
	978	!-- Within the different canopy layers the plant-canopy heating
	979	!-- rate (pc_heating_rate) is calculated as the vertical
	980	!-- divergence of the canopy heat fluxes at the top and bottom
	981	!-- of the respective layer
[1484]	982	DO i = nxlg, nxrg
	983	DO j = nysg, nyng
[2696]	984	DO k = 1, pch_index_ji(j,i)
[2232]	985	IF ( cum_lai_hf(0,j,i) /= 0.0_wp ) THEN
[3022]	986	pc_heating_rate(k,j,i) = cthf * &
	987	( exp(-ext_coef*cum_lai_hf(k,j,i)) - &
[2232]	988	exp(-ext_coef*cum_lai_hf(k-1,j,i) ) ) / dzw(k)
	989	ENDIF
	990	ENDDO
[1721]	991	ENDDO
	992	ENDDO
[1484]	993
	994	ENDIF
[3022]	995	!
	996	!-- Allocate transpiration rate
	997	IF ( humidity ) &
	998	ALLOCATE( pc_transpiration_rate(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1484]	999
	1000
	1001
[1826]	1002	END SUBROUTINE pcm_init
[1484]	1003
	1004
[2007]	1005	!------------------------------------------------------------------------------!
	1006	! Description:
	1007	! ------------
[2932]	1008	!> Parin for &plant_canopy_parameters for plant canopy model
[2007]	1009	!------------------------------------------------------------------------------!
	1010	SUBROUTINE pcm_parin
[1484]	1011
[2746]	1012	USE control_parameters, &
[2932]	1013	ONLY: message_string, plant_canopy
[2007]	1014
	1015	IMPLICIT NONE
	1016
	1017	CHARACTER (LEN=80) :: line !< dummy string that contains the current line of the parameter file
	1018
[2932]	1019	NAMELIST /plant_canopy_parameters/ &
	1020	alpha_lad, beta_lad, canopy_drag_coeff, &
	1021	canopy_mode, cthf, &
[2977]	1022	lad_surface, lad_type_coef, &
[2932]	1023	lad_vertical_gradient, &
	1024	lad_vertical_gradient_level, &
	1025	lai_beta, &
	1026	leaf_scalar_exch_coeff, &
	1027	leaf_surface_conc, pch_index
	1028
[2007]	1029	NAMELIST /canopy_par/ alpha_lad, beta_lad, canopy_drag_coeff, &
	1030	canopy_mode, cthf, &
[2977]	1031	lad_surface, lad_type_coef, &
[2007]	1032	lad_vertical_gradient, &
	1033	lad_vertical_gradient_level, &
	1034	lai_beta, &
	1035	leaf_scalar_exch_coeff, &
	1036	leaf_surface_conc, pch_index
[3246]	1037
[2007]	1038	line = ' '
[3246]	1039
[2007]	1040	!
	1041	!-- Try to find radiation model package
	1042	REWIND ( 11 )
	1043	line = ' '
[3248]	1044	DO WHILE ( INDEX( line, '&plant_canopy_parameters' ) == 0 )
[3246]	1045	READ ( 11, '(A)', END=12 ) line
[2007]	1046	ENDDO
	1047	BACKSPACE ( 11 )
	1048
	1049	!
	1050	!-- Read user-defined namelist
[3246]	1051	READ ( 11, plant_canopy_parameters, ERR = 10 )
[2932]	1052
	1053	!
	1054	!-- Set flag that indicates that the radiation model is switched on
	1055	plant_canopy = .TRUE.
[3246]	1056
	1057	GOTO 14
	1058
	1059	10 BACKSPACE( 11 )
[3248]	1060	READ( 11 , '(A)') line
	1061	CALL parin_fail_message( 'plant_canopy_parameters', line )
[2932]	1062	!
	1063	!-- Try to find old namelist
[3246]	1064	12 REWIND ( 11 )
[2932]	1065	line = ' '
[3248]	1066	DO WHILE ( INDEX( line, '&canopy_par' ) == 0 )
[3246]	1067	READ ( 11, '(A)', END=14 ) line
[2932]	1068	ENDDO
	1069	BACKSPACE ( 11 )
	1070
	1071	!
	1072	!-- Read user-defined namelist
[3246]	1073	READ ( 11, canopy_par, ERR = 13, END = 14 )
[2007]	1074
[2932]	1075	message_string = 'namelist canopy_par is deprecated and will be ' // &
[3046]	1076	'removed in near future. Please use namelist ' // &
[2932]	1077	'plant_canopy_parameters instead'
	1078	CALL message( 'pcm_parin', 'PA0487', 0, 1, 0, 6, 0 )
[3246]	1079
[2007]	1080	!
	1081	!-- Set flag that indicates that the radiation model is switched on
	1082	plant_canopy = .TRUE.
	1083
[3246]	1084	GOTO 14
[2007]	1085
[3246]	1086	13 BACKSPACE( 11 )
[3248]	1087	READ( 11 , '(A)') line
	1088	CALL parin_fail_message( 'canopy_par', line )
[3246]	1089
	1090	14 CONTINUE
	1091
	1092
[2007]	1093	END SUBROUTINE pcm_parin
	1094
	1095
	1096
[1484]	1097	!------------------------------------------------------------------------------!
	1098	! Description:
	1099	! ------------
[2007]	1100	!
	1101	!> Loads 3D plant canopy data from file. File format is as follows:
	1102	!>
	1103	!> num_levels
[2977]	1104	!> dtype,x,y,pctype,value(nzb),value(nzb+1), ... ,value(nzb+num_levels-1)
	1105	!> dtype,x,y,pctype,value(nzb),value(nzb+1), ... ,value(nzb+num_levels-1)
	1106	!> dtype,x,y,pctype,value(nzb),value(nzb+1), ... ,value(nzb+num_levels-1)
[2007]	1107	!> ...
	1108	!>
	1109	!> i.e. first line determines number of levels and further lines represent plant
	1110	!> canopy data, one line per column and variable. In each data line,
	1111	!> dtype represents variable to be set:
	1112	!>
	1113	!> dtype=1: leaf area density (lad_s)
[2213]	1114	!> dtype=2....n: some additional plant canopy input data quantity
[2007]	1115	!>
	1116	!> Zeros are added automatically above num_levels until top of domain. Any
	1117	!> non-specified (x,y) columns have zero values as default.
	1118	!------------------------------------------------------------------------------!
	1119	SUBROUTINE pcm_read_plant_canopy_3d
[2213]	1120
	1121	USE control_parameters, &
[3241]	1122	ONLY: coupling_char, message_string
[2007]	1123
[2213]	1124	USE indices, &
	1125	ONLY: nbgp
	1126
	1127	IMPLICIT NONE
[2007]	1128
[2213]	1129	INTEGER(iwp) :: dtype !< type of input data (1=lad)
[2977]	1130	INTEGER(iwp) :: pctype !< type of plant canopy (deciduous,non-deciduous,...)
[2213]	1131	INTEGER(iwp) :: i, j !< running index
	1132	INTEGER(iwp) :: nzp !< number of vertical layers of plant canopy
	1133
	1134	REAL(wp), DIMENSION(:), ALLOCATABLE :: col !< vertical column of input data
[2007]	1135
[2213]	1136	!
	1137	!-- Initialize lad_s array
	1138	lad_s = 0.0_wp
	1139
	1140	!
	1141	!-- Open and read plant canopy input data
[2977]	1142	OPEN(152, FILE='PLANT_CANOPY_DATA_3D' // TRIM( coupling_char ), &
	1143	ACCESS='SEQUENTIAL', ACTION='READ', STATUS='OLD', &
	1144	FORM='FORMATTED', ERR=515)
	1145	READ(152, *, ERR=516, END=517) nzp !< read first line = number of vertical layers
[2213]	1146
[2977]	1147	ALLOCATE( col(0:nzp-1) )
[2007]	1148
[2213]	1149	DO
[2977]	1150	READ(152, *, ERR=516, END=517) dtype, i, j, pctype, col(:)
	1151	IF ( i < nxlg .OR. i > nxrg .OR. j < nysg .OR. j > nyng ) CYCLE
	1152
	1153	SELECT CASE (dtype)
	1154	CASE( 1 ) !< leaf area density
[2213]	1155	!
[2977]	1156	!-- This is just the pure canopy layer assumed to be grounded to
	1157	!-- a flat domain surface. At locations where plant canopy sits
	1158	!-- on top of any kind of topography, the vertical plant column
	1159	!-- must be "lifted", which is done in SUBROUTINE pcm_tendency.
	1160	IF ( pctype < 0 .OR. pctype > 10 ) THEN !< incorrect plant canopy type
	1161	WRITE( message_string, * ) 'Incorrect type of plant canopy. ' // &
	1162	'Allowed values 0 <= pctype <= 10, ' // &
	1163	'but pctype is ', pctype
	1164	CALL message( 'pcm_read_plant_canopy_3d', 'PA0349', 1, 2, 0, 6, 0 )
	1165	ENDIF
	1166	lad_s(0:nzp-1,j,i) = col(0:nzp-1) * lad_type_coef(pctype)
	1167
	1168	CASE DEFAULT
	1169	WRITE(message_string, '(a,i2,a)') &
	1170	'Unknown record type in file PLANT_CANOPY_DATA_3D: "', dtype, '"'
	1171	CALL message( 'pcm_read_plant_canopy_3d', 'PA0530', 1, 2, 0, 6, 0 )
	1172	END SELECT
[2213]	1173	ENDDO
[2007]	1174
[2213]	1175	515 message_string = 'error opening file PLANT_CANOPY_DATA_3D'
	1176	CALL message( 'pcm_read_plant_canopy_3d', 'PA0531', 1, 2, 0, 6, 0 )
[2007]	1177
[2213]	1178	516 message_string = 'error reading file PLANT_CANOPY_DATA_3D'
	1179	CALL message( 'pcm_read_plant_canopy_3d', 'PA0532', 1, 2, 0, 6, 0 )
	1180
	1181	517 CLOSE(152)
[2977]	1182	DEALLOCATE( col )
[2213]	1183
	1184	CALL exchange_horiz( lad_s, nbgp )
[2007]	1185
	1186	END SUBROUTINE pcm_read_plant_canopy_3d
	1187
	1188
	1189
	1190	!------------------------------------------------------------------------------!
	1191	! Description:
	1192	! ------------
[1682]	1193	!> Calculation of the tendency terms, accounting for the effect of the plant
	1194	!> canopy on momentum and scalar quantities.
	1195	!>
	1196	!> The canopy is located where the leaf area density lad_s(k,j,i) > 0.0
[1826]	1197	!> (defined on scalar grid), as initialized in subroutine pcm_init.
[1682]	1198	!> The lad on the w-grid is vertically interpolated from the surrounding
	1199	!> lad_s. The upper boundary of the canopy is defined on the w-grid at
	1200	!> k = pch_index. Here, the lad is zero.
	1201	!>
	1202	!> The canopy drag must be limited (previously accounted for by calculation of
	1203	!> a limiting canopy timestep for the determination of the maximum LES timestep
	1204	!> in subroutine timestep), since it is physically impossible that the canopy
	1205	!> drag alone can locally change the sign of a velocity component. This
	1206	!> limitation is realized by calculating preliminary tendencies and velocities.
	1207	!> It is subsequently checked if the preliminary new velocity has a different
	1208	!> sign than the current velocity. If so, the tendency is limited in a way that
	1209	!> the velocity can at maximum be reduced to zero by the canopy drag.
	1210	!>
	1211	!>
	1212	!> Call for all grid points
[1484]	1213	!------------------------------------------------------------------------------!
[1826]	1214	SUBROUTINE pcm_tendency( component )
[138]	1215
	1216
[1320]	1217	USE control_parameters, &
[1484]	1218	ONLY: dt_3d, message_string
[1320]	1219
	1220	USE kinds
	1221
[138]	1222	IMPLICIT NONE
	1223
[1682]	1224	INTEGER(iwp) :: component !< prognostic variable (u,v,w,pt,q,e)
	1225	INTEGER(iwp) :: i !< running index
	1226	INTEGER(iwp) :: j !< running index
	1227	INTEGER(iwp) :: k !< running index
[2232]	1228	INTEGER(iwp) :: k_wall !< vertical index of topography top
[1721]	1229	INTEGER(iwp) :: kk !< running index for flat lad arrays
[1484]	1230
[1682]	1231	REAL(wp) :: ddt_3d !< inverse of the LES timestep (dt_3d)
	1232	REAL(wp) :: lad_local !< local lad value
	1233	REAL(wp) :: pre_tend !< preliminary tendency
	1234	REAL(wp) :: pre_u !< preliminary u-value
	1235	REAL(wp) :: pre_v !< preliminary v-value
	1236	REAL(wp) :: pre_w !< preliminary w-value
[1484]	1237
	1238
	1239	ddt_3d = 1.0_wp / dt_3d
[138]	1240
	1241	!
[1484]	1242	!-- Compute drag for the three velocity components and the SGS-TKE:
[138]	1243	SELECT CASE ( component )
	1244
	1245	!
	1246	!-- u-component
	1247	CASE ( 1 )
	1248	DO i = nxlu, nxr
	1249	DO j = nys, nyn
[2232]	1250	!
	1251	!-- Determine topography-top index on u-grid
[2698]	1252	k_wall = get_topography_top_index_ji( j, i, 'u' )
[2696]	1253	DO k = k_wall+1, k_wall + pch_index_ji(j,i)
[1484]	1254
[2232]	1255	kk = k - k_wall !- lad arrays are defined flat
[1484]	1256	!
	1257	!-- In order to create sharp boundaries of the plant canopy,
	1258	!-- the lad on the u-grid at index (k,j,i) is equal to
	1259	!-- lad_s(k,j,i), rather than being interpolated from the
	1260	!-- surrounding lad_s, because this would yield smaller lad
	1261	!-- at the canopy boundaries than inside of the canopy.
	1262	!-- For the same reason, the lad at the rightmost(i+1)canopy
	1263	!-- boundary on the u-grid equals lad_s(k,j,i).
[1721]	1264	lad_local = lad_s(kk,j,i)
	1265	IF ( lad_local == 0.0_wp .AND. lad_s(kk,j,i-1) > 0.0_wp )&
	1266	THEN
	1267	lad_local = lad_s(kk,j,i-1)
[1484]	1268	ENDIF
	1269
	1270	pre_tend = 0.0_wp
	1271	pre_u = 0.0_wp
	1272	!
	1273	!-- Calculate preliminary value (pre_tend) of the tendency
	1274	pre_tend = - cdc * &
	1275	lad_local * &
	1276	SQRT( u(k,j,i)**2 + &
	1277	( 0.25_wp * ( v(k,j,i-1) + &
	1278	v(k,j,i) + &
	1279	v(k,j+1,i) + &
	1280	v(k,j+1,i-1) ) &
	1281	)**2 + &
	1282	( 0.25_wp * ( w(k-1,j,i-1) + &
	1283	w(k-1,j,i) + &
	1284	w(k,j,i-1) + &
	1285	w(k,j,i) ) &
	1286	)**2 &
	1287	) * &
	1288	u(k,j,i)
	1289
	1290	!
	1291	!-- Calculate preliminary new velocity, based on pre_tend
	1292	pre_u = u(k,j,i) + dt_3d * pre_tend
	1293	!
	1294	!-- Compare sign of old velocity and new preliminary velocity,
	1295	!-- and in case the signs are different, limit the tendency
	1296	IF ( SIGN(pre_u,u(k,j,i)) /= pre_u ) THEN
	1297	pre_tend = - u(k,j,i) * ddt_3d
	1298	ELSE
	1299	pre_tend = pre_tend
	1300	ENDIF
	1301	!
	1302	!-- Calculate final tendency
	1303	tend(k,j,i) = tend(k,j,i) + pre_tend
	1304
[138]	1305	ENDDO
	1306	ENDDO
	1307	ENDDO
	1308
	1309	!
	1310	!-- v-component
	1311	CASE ( 2 )
	1312	DO i = nxl, nxr
	1313	DO j = nysv, nyn
[2232]	1314	!
	1315	!-- Determine topography-top index on v-grid
[2698]	1316	k_wall = get_topography_top_index_ji( j, i, 'v' )
[2317]	1317
[2696]	1318	DO k = k_wall+1, k_wall + pch_index_ji(j,i)
[1484]	1319
[2232]	1320	kk = k - k_wall !- lad arrays are defined flat
[1484]	1321	!
	1322	!-- In order to create sharp boundaries of the plant canopy,
	1323	!-- the lad on the v-grid at index (k,j,i) is equal to
	1324	!-- lad_s(k,j,i), rather than being interpolated from the
	1325	!-- surrounding lad_s, because this would yield smaller lad
	1326	!-- at the canopy boundaries than inside of the canopy.
	1327	!-- For the same reason, the lad at the northmost(j+1) canopy
	1328	!-- boundary on the v-grid equals lad_s(k,j,i).
[1721]	1329	lad_local = lad_s(kk,j,i)
	1330	IF ( lad_local == 0.0_wp .AND. lad_s(kk,j-1,i) > 0.0_wp )&
	1331	THEN
	1332	lad_local = lad_s(kk,j-1,i)
[1484]	1333	ENDIF
	1334
	1335	pre_tend = 0.0_wp
	1336	pre_v = 0.0_wp
	1337	!
	1338	!-- Calculate preliminary value (pre_tend) of the tendency
	1339	pre_tend = - cdc * &
	1340	lad_local * &
	1341	SQRT( ( 0.25_wp * ( u(k,j-1,i) + &
	1342	u(k,j-1,i+1) + &
	1343	u(k,j,i) + &
	1344	u(k,j,i+1) ) &
	1345	)**2 + &
	1346	v(k,j,i)**2 + &
	1347	( 0.25_wp * ( w(k-1,j-1,i) + &
	1348	w(k-1,j,i) + &
	1349	w(k,j-1,i) + &
	1350	w(k,j,i) ) &
	1351	)**2 &
	1352	) * &
	1353	v(k,j,i)
	1354
	1355	!
	1356	!-- Calculate preliminary new velocity, based on pre_tend
	1357	pre_v = v(k,j,i) + dt_3d * pre_tend
	1358	!
	1359	!-- Compare sign of old velocity and new preliminary velocity,
	1360	!-- and in case the signs are different, limit the tendency
	1361	IF ( SIGN(pre_v,v(k,j,i)) /= pre_v ) THEN
	1362	pre_tend = - v(k,j,i) * ddt_3d
	1363	ELSE
	1364	pre_tend = pre_tend
	1365	ENDIF
	1366	!
	1367	!-- Calculate final tendency
	1368	tend(k,j,i) = tend(k,j,i) + pre_tend
	1369
[138]	1370	ENDDO
	1371	ENDDO
	1372	ENDDO
	1373
	1374	!
	1375	!-- w-component
	1376	CASE ( 3 )
	1377	DO i = nxl, nxr
	1378	DO j = nys, nyn
[2232]	1379	!
	1380	!-- Determine topography-top index on w-grid
[2698]	1381	k_wall = get_topography_top_index_ji( j, i, 'w' )
[2317]	1382
[2696]	1383	DO k = k_wall+1, k_wall + pch_index_ji(j,i) - 1
[1484]	1384
[2232]	1385	kk = k - k_wall !- lad arrays are defined flat
[1721]	1386
[1484]	1387	pre_tend = 0.0_wp
	1388	pre_w = 0.0_wp
	1389	!
	1390	!-- Calculate preliminary value (pre_tend) of the tendency
	1391	pre_tend = - cdc * &
	1392	(0.5_wp * &
[1721]	1393	( lad_s(kk+1,j,i) + lad_s(kk,j,i) )) * &
[1484]	1394	SQRT( ( 0.25_wp * ( u(k,j,i) + &
	1395	u(k,j,i+1) + &
	1396	u(k+1,j,i) + &
	1397	u(k+1,j,i+1) ) &
	1398	)**2 + &
	1399	( 0.25_wp * ( v(k,j,i) + &
	1400	v(k,j+1,i) + &
	1401	v(k+1,j,i) + &
	1402	v(k+1,j+1,i) ) &
	1403	)**2 + &
	1404	w(k,j,i)**2 &
	1405	) * &
	1406	w(k,j,i)
	1407	!
	1408	!-- Calculate preliminary new velocity, based on pre_tend
	1409	pre_w = w(k,j,i) + dt_3d * pre_tend
	1410	!
	1411	!-- Compare sign of old velocity and new preliminary velocity,
	1412	!-- and in case the signs are different, limit the tendency
	1413	IF ( SIGN(pre_w,w(k,j,i)) /= pre_w ) THEN
	1414	pre_tend = - w(k,j,i) * ddt_3d
	1415	ELSE
	1416	pre_tend = pre_tend
	1417	ENDIF
	1418	!
	1419	!-- Calculate final tendency
	1420	tend(k,j,i) = tend(k,j,i) + pre_tend
	1421
[138]	1422	ENDDO
	1423	ENDDO
	1424	ENDDO
	1425
	1426	!
[153]	1427	!-- potential temperature
[138]	1428	CASE ( 4 )
	1429	DO i = nxl, nxr
	1430	DO j = nys, nyn
[2232]	1431	!
	1432	!-- Determine topography-top index on scalar-grid
[2698]	1433	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1434
[2696]	1435	DO k = k_wall+1, k_wall + pch_index_ji(j,i)
[2232]	1436
	1437	kk = k - k_wall !- lad arrays are defined flat
[2011]	1438	tend(k,j,i) = tend(k,j,i) + pc_heating_rate(kk,j,i)
[153]	1439	ENDDO
	1440	ENDDO
	1441	ENDDO
	1442
	1443	!
[1960]	1444	!-- humidity
[153]	1445	CASE ( 5 )
	1446	DO i = nxl, nxr
	1447	DO j = nys, nyn
[2232]	1448	!
	1449	!-- Determine topography-top index on scalar-grid
[2698]	1450	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1451
[2696]	1452	DO k = k_wall+1, k_wall + pch_index_ji(j,i)
[2232]	1453
	1454	kk = k - k_wall !- lad arrays are defined flat
[3014]	1455	pc_transpiration_rate(kk,j,i) = - lsec &
	1456	* lad_s(kk,j,i) * &
[1484]	1457	SQRT( ( 0.5_wp * ( u(k,j,i) + &
	1458	u(k,j,i+1) ) &
	1459	)**2 + &
	1460	( 0.5_wp * ( v(k,j,i) + &
	1461	v(k,j+1,i) ) &
	1462	)**2 + &
	1463	( 0.5_wp * ( w(k-1,j,i) + &
	1464	w(k,j,i) ) &
	1465	)**2 &
	1466	) * &
	1467	( q(k,j,i) - lsc )
[3014]	1468
	1469	tend(k,j,i) = tend(k,j,i) + pc_transpiration_rate(kk,j,i)
[153]	1470	ENDDO
	1471	ENDDO
	1472	ENDDO
	1473
	1474	!
	1475	!-- sgs-tke
	1476	CASE ( 6 )
	1477	DO i = nxl, nxr
	1478	DO j = nys, nyn
[2232]	1479	!
	1480	!-- Determine topography-top index on scalar-grid
[2698]	1481	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1482
[2696]	1483	DO k = k_wall+1, k_wall + pch_index_ji(j,i)
[2232]	1484
	1485	kk = k - k_wall !- lad arrays are defined flat
[1484]	1486	tend(k,j,i) = tend(k,j,i) - &
	1487	2.0_wp * cdc * &
[1721]	1488	lad_s(kk,j,i) * &
[1484]	1489	SQRT( ( 0.5_wp * ( u(k,j,i) + &
	1490	u(k,j,i+1) ) &
	1491	)**2 + &
	1492	( 0.5_wp * ( v(k,j,i) + &
	1493	v(k,j+1,i) ) &
	1494	)**2 + &
	1495	( 0.5_wp * ( w(k,j,i) + &
	1496	w(k+1,j,i) ) &
	1497	)**2 &
	1498	) * &
	1499	e(k,j,i)
[138]	1500	ENDDO
	1501	ENDDO
	1502	ENDDO
[1960]	1503	!
	1504	!-- scalar concentration
	1505	CASE ( 7 )
	1506	DO i = nxl, nxr
	1507	DO j = nys, nyn
[2232]	1508	!
	1509	!-- Determine topography-top index on scalar-grid
[2698]	1510	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1511
[2696]	1512	DO k = k_wall+1, k_wall + pch_index_ji(j,i)
[2232]	1513
	1514	kk = k - k_wall !- lad arrays are defined flat
[1960]	1515	tend(k,j,i) = tend(k,j,i) - &
	1516	lsec * &
	1517	lad_s(kk,j,i) * &
	1518	SQRT( ( 0.5_wp * ( u(k,j,i) + &
	1519	u(k,j,i+1) ) &
	1520	)**2 + &
	1521	( 0.5_wp * ( v(k,j,i) + &
	1522	v(k,j+1,i) ) &
	1523	)**2 + &
	1524	( 0.5_wp * ( w(k-1,j,i) + &
	1525	w(k,j,i) ) &
	1526	)**2 &
	1527	) * &
	1528	( s(k,j,i) - lsc )
	1529	ENDDO
	1530	ENDDO
	1531	ENDDO
[1484]	1532
	1533
[1960]	1534
[138]	1535	CASE DEFAULT
	1536
[257]	1537	WRITE( message_string, * ) 'wrong component: ', component
[1826]	1538	CALL message( 'pcm_tendency', 'PA0279', 1, 2, 0, 6, 0 )
[138]	1539
	1540	END SELECT
	1541
[1826]	1542	END SUBROUTINE pcm_tendency
[138]	1543
	1544
	1545	!------------------------------------------------------------------------------!
[1484]	1546	! Description:
	1547	! ------------
[1682]	1548	!> Calculation of the tendency terms, accounting for the effect of the plant
	1549	!> canopy on momentum and scalar quantities.
	1550	!>
	1551	!> The canopy is located where the leaf area density lad_s(k,j,i) > 0.0
[1826]	1552	!> (defined on scalar grid), as initialized in subroutine pcm_init.
[1682]	1553	!> The lad on the w-grid is vertically interpolated from the surrounding
	1554	!> lad_s. The upper boundary of the canopy is defined on the w-grid at
	1555	!> k = pch_index. Here, the lad is zero.
	1556	!>
	1557	!> The canopy drag must be limited (previously accounted for by calculation of
	1558	!> a limiting canopy timestep for the determination of the maximum LES timestep
	1559	!> in subroutine timestep), since it is physically impossible that the canopy
	1560	!> drag alone can locally change the sign of a velocity component. This
	1561	!> limitation is realized by calculating preliminary tendencies and velocities.
	1562	!> It is subsequently checked if the preliminary new velocity has a different
	1563	!> sign than the current velocity. If so, the tendency is limited in a way that
	1564	!> the velocity can at maximum be reduced to zero by the canopy drag.
	1565	!>
	1566	!>
	1567	!> Call for grid point i,j
[138]	1568	!------------------------------------------------------------------------------!
[1826]	1569	SUBROUTINE pcm_tendency_ij( i, j, component )
[138]	1570
	1571
[1320]	1572	USE control_parameters, &
[1484]	1573	ONLY: dt_3d, message_string
[1320]	1574
	1575	USE kinds
	1576
[138]	1577	IMPLICIT NONE
	1578
[1682]	1579	INTEGER(iwp) :: component !< prognostic variable (u,v,w,pt,q,e)
	1580	INTEGER(iwp) :: i !< running index
	1581	INTEGER(iwp) :: j !< running index
	1582	INTEGER(iwp) :: k !< running index
[2232]	1583	INTEGER(iwp) :: k_wall !< vertical index of topography top
[1721]	1584	INTEGER(iwp) :: kk !< running index for flat lad arrays
[138]	1585
[1682]	1586	REAL(wp) :: ddt_3d !< inverse of the LES timestep (dt_3d)
	1587	REAL(wp) :: lad_local !< local lad value
	1588	REAL(wp) :: pre_tend !< preliminary tendency
	1589	REAL(wp) :: pre_u !< preliminary u-value
	1590	REAL(wp) :: pre_v !< preliminary v-value
	1591	REAL(wp) :: pre_w !< preliminary w-value
[1484]	1592
	1593
	1594	ddt_3d = 1.0_wp / dt_3d
[138]	1595	!
[1484]	1596	!-- Compute drag for the three velocity components and the SGS-TKE
[142]	1597	SELECT CASE ( component )
[138]	1598
	1599	!
[142]	1600	!-- u-component
[1484]	1601	CASE ( 1 )
[2232]	1602	!
	1603	!-- Determine topography-top index on u-grid
[2698]	1604	k_wall = get_topography_top_index_ji( j, i, 'u' )
[2696]	1605	DO k = k_wall + 1, k_wall + pch_index_ji(j,i)
[2317]	1606
[2696]	1607	kk = k - k_wall !- lad arrays are defined flat
[138]	1608
	1609	!
[1484]	1610	!-- In order to create sharp boundaries of the plant canopy,
	1611	!-- the lad on the u-grid at index (k,j,i) is equal to lad_s(k,j,i),
	1612	!-- rather than being interpolated from the surrounding lad_s,
	1613	!-- because this would yield smaller lad at the canopy boundaries
	1614	!-- than inside of the canopy.
	1615	!-- For the same reason, the lad at the rightmost(i+1)canopy
	1616	!-- boundary on the u-grid equals lad_s(k,j,i).
[1721]	1617	lad_local = lad_s(kk,j,i)
	1618	IF ( lad_local == 0.0_wp .AND. lad_s(kk,j,i-1) > 0.0_wp ) THEN
	1619	lad_local = lad_s(kk,j,i-1)
[1484]	1620	ENDIF
	1621
	1622	pre_tend = 0.0_wp
	1623	pre_u = 0.0_wp
	1624	!
	1625	!-- Calculate preliminary value (pre_tend) of the tendency
	1626	pre_tend = - cdc * &
	1627	lad_local * &
	1628	SQRT( u(k,j,i)**2 + &
	1629	( 0.25_wp * ( v(k,j,i-1) + &
	1630	v(k,j,i) + &
	1631	v(k,j+1,i) + &
	1632	v(k,j+1,i-1) ) &
	1633	)**2 + &
	1634	( 0.25_wp * ( w(k-1,j,i-1) + &
	1635	w(k-1,j,i) + &
	1636	w(k,j,i-1) + &
	1637	w(k,j,i) ) &
	1638	)**2 &
	1639	) * &
	1640	u(k,j,i)
	1641
	1642	!
	1643	!-- Calculate preliminary new velocity, based on pre_tend
	1644	pre_u = u(k,j,i) + dt_3d * pre_tend
	1645	!
	1646	!-- Compare sign of old velocity and new preliminary velocity,
	1647	!-- and in case the signs are different, limit the tendency
	1648	IF ( SIGN(pre_u,u(k,j,i)) /= pre_u ) THEN
	1649	pre_tend = - u(k,j,i) * ddt_3d
	1650	ELSE
	1651	pre_tend = pre_tend
	1652	ENDIF
	1653	!
	1654	!-- Calculate final tendency
	1655	tend(k,j,i) = tend(k,j,i) + pre_tend
	1656	ENDDO
	1657
	1658
	1659	!
[142]	1660	!-- v-component
[1484]	1661	CASE ( 2 )
[2232]	1662	!
	1663	!-- Determine topography-top index on v-grid
[2698]	1664	k_wall = get_topography_top_index_ji( j, i, 'v' )
[2317]	1665
[2696]	1666	DO k = k_wall + 1, k_wall + pch_index_ji(j,i)
[138]	1667
[2232]	1668	kk = k - k_wall !- lad arrays are defined flat
[138]	1669	!
[1484]	1670	!-- In order to create sharp boundaries of the plant canopy,
	1671	!-- the lad on the v-grid at index (k,j,i) is equal to lad_s(k,j,i),
	1672	!-- rather than being interpolated from the surrounding lad_s,
	1673	!-- because this would yield smaller lad at the canopy boundaries
	1674	!-- than inside of the canopy.
	1675	!-- For the same reason, the lad at the northmost(j+1)canopy
	1676	!-- boundary on the v-grid equals lad_s(k,j,i).
[1721]	1677	lad_local = lad_s(kk,j,i)
	1678	IF ( lad_local == 0.0_wp .AND. lad_s(kk,j-1,i) > 0.0_wp ) THEN
	1679	lad_local = lad_s(kk,j-1,i)
[1484]	1680	ENDIF
	1681
	1682	pre_tend = 0.0_wp
	1683	pre_v = 0.0_wp
	1684	!
	1685	!-- Calculate preliminary value (pre_tend) of the tendency
	1686	pre_tend = - cdc * &
	1687	lad_local * &
	1688	SQRT( ( 0.25_wp * ( u(k,j-1,i) + &
	1689	u(k,j-1,i+1) + &
	1690	u(k,j,i) + &
	1691	u(k,j,i+1) ) &
	1692	)**2 + &
	1693	v(k,j,i)**2 + &
	1694	( 0.25_wp * ( w(k-1,j-1,i) + &
	1695	w(k-1,j,i) + &
	1696	w(k,j-1,i) + &
	1697	w(k,j,i) ) &
	1698	)**2 &
	1699	) * &
	1700	v(k,j,i)
	1701
	1702	!
	1703	!-- Calculate preliminary new velocity, based on pre_tend
	1704	pre_v = v(k,j,i) + dt_3d * pre_tend
	1705	!
	1706	!-- Compare sign of old velocity and new preliminary velocity,
	1707	!-- and in case the signs are different, limit the tendency
	1708	IF ( SIGN(pre_v,v(k,j,i)) /= pre_v ) THEN
	1709	pre_tend = - v(k,j,i) * ddt_3d
	1710	ELSE
	1711	pre_tend = pre_tend
	1712	ENDIF
	1713	!
	1714	!-- Calculate final tendency
	1715	tend(k,j,i) = tend(k,j,i) + pre_tend
	1716	ENDDO
	1717
	1718
	1719	!
[142]	1720	!-- w-component
[1484]	1721	CASE ( 3 )
[2232]	1722	!
	1723	!-- Determine topography-top index on w-grid
[2698]	1724	k_wall = get_topography_top_index_ji( j, i, 'w' )
[2317]	1725
[2696]	1726	DO k = k_wall + 1, k_wall + pch_index_ji(j,i) - 1
[138]	1727
[2232]	1728	kk = k - k_wall !- lad arrays are defined flat
[1721]	1729
[1484]	1730	pre_tend = 0.0_wp
	1731	pre_w = 0.0_wp
[138]	1732	!
[1484]	1733	!-- Calculate preliminary value (pre_tend) of the tendency
	1734	pre_tend = - cdc * &
	1735	(0.5_wp * &
[1721]	1736	( lad_s(kk+1,j,i) + lad_s(kk,j,i) )) * &
[1484]	1737	SQRT( ( 0.25_wp * ( u(k,j,i) + &
	1738	u(k,j,i+1) + &
	1739	u(k+1,j,i) + &
	1740	u(k+1,j,i+1) ) &
	1741	)**2 + &
	1742	( 0.25_wp * ( v(k,j,i) + &
	1743	v(k,j+1,i) + &
	1744	v(k+1,j,i) + &
	1745	v(k+1,j+1,i) ) &
	1746	)**2 + &
	1747	w(k,j,i)**2 &
	1748	) * &
	1749	w(k,j,i)
	1750	!
	1751	!-- Calculate preliminary new velocity, based on pre_tend
	1752	pre_w = w(k,j,i) + dt_3d * pre_tend
	1753	!
	1754	!-- Compare sign of old velocity and new preliminary velocity,
	1755	!-- and in case the signs are different, limit the tendency
	1756	IF ( SIGN(pre_w,w(k,j,i)) /= pre_w ) THEN
	1757	pre_tend = - w(k,j,i) * ddt_3d
	1758	ELSE
	1759	pre_tend = pre_tend
	1760	ENDIF
	1761	!
	1762	!-- Calculate final tendency
	1763	tend(k,j,i) = tend(k,j,i) + pre_tend
	1764	ENDDO
	1765
	1766	!
[153]	1767	!-- potential temperature
	1768	CASE ( 4 )
[2232]	1769	!
	1770	!-- Determine topography-top index on scalar grid
[2698]	1771	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1772
[2696]	1773	DO k = k_wall + 1, k_wall + pch_index_ji(j,i)
[2232]	1774	kk = k - k_wall !- lad arrays are defined flat
[2011]	1775	tend(k,j,i) = tend(k,j,i) + pc_heating_rate(kk,j,i)
[153]	1776	ENDDO
	1777
	1778
	1779	!
[1960]	1780	!-- humidity
[153]	1781	CASE ( 5 )
[2232]	1782	!
	1783	!-- Determine topography-top index on scalar grid
[2698]	1784	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1785
[2696]	1786	DO k = k_wall + 1, k_wall + pch_index_ji(j,i)
[3014]	1787	kk = k - k_wall !- lad arrays are defined flat
[2232]	1788
[3014]	1789	pc_transpiration_rate(kk,j,i) = - lsec &
	1790	* lad_s(kk,j,i) * &
[1484]	1791	SQRT( ( 0.5_wp * ( u(k,j,i) + &
	1792	u(k,j,i+1) ) &
	1793	)**2 + &
	1794	( 0.5_wp * ( v(k,j,i) + &
	1795	v(k,j+1,i) ) &
	1796	)**2 + &
	1797	( 0.5_wp * ( w(k-1,j,i) + &
	1798	w(k,j,i) ) &
	1799	)**2 &
	1800	) * &
	1801	( q(k,j,i) - lsc )
[3014]	1802
	1803	tend(k,j,i) = tend(k,j,i) + pc_transpiration_rate(kk,j,i)
	1804
[153]	1805	ENDDO
	1806
	1807	!
[142]	1808	!-- sgs-tke
[1484]	1809	CASE ( 6 )
[2232]	1810	!
	1811	!-- Determine topography-top index on scalar grid
[2698]	1812	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1813
[2696]	1814	DO k = k_wall + 1, k_wall + pch_index_ji(j,i)
[2232]	1815
	1816	kk = k - k_wall
[1484]	1817	tend(k,j,i) = tend(k,j,i) - &
	1818	2.0_wp * cdc * &
[1721]	1819	lad_s(kk,j,i) * &
[1484]	1820	SQRT( ( 0.5_wp * ( u(k,j,i) + &
	1821	u(k,j,i+1) ) &
	1822	)**2 + &
	1823	( 0.5_wp * ( v(k,j,i) + &
	1824	v(k,j+1,i) ) &
	1825	)**2 + &
	1826	( 0.5_wp * ( w(k,j,i) + &
	1827	w(k+1,j,i) ) &
	1828	)**2 &
	1829	) * &
	1830	e(k,j,i)
	1831	ENDDO
[1960]	1832
	1833	!
	1834	!-- scalar concentration
	1835	CASE ( 7 )
[2232]	1836	!
	1837	!-- Determine topography-top index on scalar grid
[2698]	1838	k_wall = get_topography_top_index_ji( j, i, 's' )
[2317]	1839
[2696]	1840	DO k = k_wall + 1, k_wall + pch_index_ji(j,i)
[2232]	1841
	1842	kk = k - k_wall
[1960]	1843	tend(k,j,i) = tend(k,j,i) - &
	1844	lsec * &
	1845	lad_s(kk,j,i) * &
	1846	SQRT( ( 0.5_wp * ( u(k,j,i) + &
	1847	u(k,j,i+1) ) &
	1848	)**2 + &
	1849	( 0.5_wp * ( v(k,j,i) + &
	1850	v(k,j+1,i) ) &
	1851	)**2 + &
	1852	( 0.5_wp * ( w(k-1,j,i) + &
	1853	w(k,j,i) ) &
	1854	)**2 &
	1855	) * &
	1856	( s(k,j,i) - lsc )
	1857	ENDDO
[138]	1858
[142]	1859	CASE DEFAULT
[138]	1860
[257]	1861	WRITE( message_string, * ) 'wrong component: ', component
[1826]	1862	CALL message( 'pcm_tendency', 'PA0279', 1, 2, 0, 6, 0 )
[138]	1863
[142]	1864	END SELECT
[138]	1865
[1826]	1866	END SUBROUTINE pcm_tendency_ij
[138]	1867
[2007]	1868
	1869
[138]	1870	END MODULE plant_canopy_model_mod

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