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source: palm/trunk/SOURCE/lpm_init.f90 @ 1937

Last change on this file since 1937 was 1930, checked in by suehring, 8 years ago
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[1873]	1	!> @file lpm_init.f90
[1036]	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	!
[1818]	16	! Copyright 1997-2016 Leibniz Universitaet Hannover
[1036]	17	!--------------------------------------------------------------------------------!
	18	!
[254]	19	! Current revisions:
[1]	20	! -----------------
[1930]	21	!
	22	!
	23	! Former revisions:
	24	! -----------------
	25	! $Id: lpm_init.f90 1930 2016-06-09 16:32:12Z suehring $
	26	!
	27	! 2016-06-09 16:25:25Z suehring
[1929]	28	! Bugfix in determining initial particle height and grid index in case of
	29	! seed_follows_topography.
	30	! Bugfix concerning random positions, ensure that particles do not move more
	31	! than one grid length.
	32	! Bugfix logarithmic interpolation.
	33	! Initial setting of sgs_wf_part.
[1321]	34	!
[1891]	35	! 1890 2016-04-22 08:52:11Z hoffmann
	36	! Initialization of aerosol equilibrium radius not possible in supersaturated
	37	! environments. Therefore, a maximum supersaturation of -1 % is assumed during
	38	! initialization.
	39	!
[1874]	40	! 1873 2016-04-18 14:50:06Z maronga
[1929]	41	! Module renamed (removed _mod
	42
[1874]	43	!
[1872]	44	! 1871 2016-04-15 11:46:09Z hoffmann
	45	! Initialization of aerosols added.
	46	!
[1851]	47	! 1850 2016-04-08 13:29:27Z maronga
	48	! Module renamed
	49	!
[1832]	50	! 1831 2016-04-07 13:15:51Z hoffmann
	51	! curvature_solution_effects moved to particle_attributes
	52	!
[1823]	53	! 1822 2016-04-07 07:49:42Z hoffmann
	54	! Unused variables removed.
	55	!
[1784]	56	! 1783 2016-03-06 18:36:17Z raasch
	57	! netcdf module added
	58	!
[1726]	59	! 1725 2015-11-17 13:01:51Z hoffmann
	60	! Bugfix: Processor-dependent seed for random function is generated before it is
	61	! used.
	62	!
[1692]	63	! 1691 2015-10-26 16:17:44Z maronga
	64	! Renamed prandtl_layer to constant_flux_layer.
	65	!
[1686]	66	! 1685 2015-10-08 07:32:13Z raasch
	67	! bugfix concerning vertical index offset in case of ocean
	68	!
[1683]	69	! 1682 2015-10-07 23:56:08Z knoop
	70	! Code annotations made doxygen readable
	71	!
[1576]	72	! 1575 2015-03-27 09:56:27Z raasch
	73	! initial vertical particle position is allowed to follow the topography
	74	!
[1360]	75	! 1359 2014-04-11 17:15:14Z hoffmann
	76	! New particle structure integrated.
	77	! Kind definition added to all floating point numbers.
	78	! lpm_init changed form a subroutine to a module.
	79	!
[1329]	80	! 1327 2014-03-21 11:00:16Z raasch
	81	! -netcdf_output
	82	!
[1323]	83	! 1322 2014-03-20 16:38:49Z raasch
	84	! REAL functions provided with KIND-attribute
	85	!
[1321]	86	! 1320 2014-03-20 08:40:49Z raasch
[1320]	87	! ONLY-attribute added to USE-statements,
	88	! kind-parameters added to all INTEGER and REAL declaration statements,
	89	! kinds are defined in new module kinds,
	90	! revision history before 2012 removed,
	91	! comment fields (!:) to be used for variable explanations added to
	92	! all variable declaration statements
	93	! bugfix: #if defined( __parallel ) added
[850]	94	!
[1315]	95	! 1314 2014-03-14 18:25:17Z suehring
	96	! Vertical logarithmic interpolation of horizontal particle speed for particles
	97	! between roughness height and first vertical grid level.
	98	!
[1093]	99	! 1092 2013-02-02 11:24:22Z raasch
	100	! unused variables removed
	101	!
[1037]	102	! 1036 2012-10-22 13:43:42Z raasch
	103	! code put under GPL (PALM 3.9)
	104	!
[850]	105	! 849 2012-03-15 10:35:09Z raasch
[849]	106	! routine renamed: init_particles -> lpm_init
	107	! de_dx, de_dy, de_dz are allocated here (instead of automatic arrays in
	108	! advec_particles),
	109	! sort_particles renamed lpm_sort_arrays, user_init_particles renamed lpm_init
[392]	110	!
[829]	111	! 828 2012-02-21 12:00:36Z raasch
	112	! call of init_kernels, particle feature color renamed class
	113	!
[826]	114	! 824 2012-02-17 09:09:57Z raasch
	115	! particle attributes speed_x\|y\|z_sgs renamed rvar1\|2\|3,
	116	! array particles implemented as pointer
	117	!
[668]	118	! 667 2010-12-23 12:06:00Z suehring/gryschka
	119	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng for allocation
	120	! of arrays.
	121	!
[1]	122	! Revision 1.1 1999/11/25 16:22:38 raasch
	123	! Initial revision
	124	!
	125	!
	126	! Description:
	127	! ------------
[1682]	128	!> This routine initializes a set of particles and their attributes (position,
	129	!> radius, ..) which are used by the Lagrangian particle model (see lpm).
[1]	130	!------------------------------------------------------------------------------!
[1682]	131	MODULE lpm_init_mod
	132
[1]	133
[1320]	134	USE arrays_3d, &
	135	ONLY: de_dx, de_dy, de_dz, zu, zw, z0
	136
	137	USE control_parameters, &
[1691]	138	ONLY: cloud_droplets, constant_flux_layer, current_timestep_number, &
[1783]	139	dz, initializing_actions, message_string, ocean, simulated_time
[1320]	140
	141	USE grid_variables, &
[1359]	142	ONLY: ddx, dx, ddy, dy
[1320]	143
	144	USE indices, &
[1575]	145	ONLY: nx, nxl, nxlg, nxrg, nxr, ny, nyn, nys, nyng, nysg, nz, nzb, &
	146	nzb_w_inner, nzt
[1320]	147
	148	USE kinds
	149
	150	USE lpm_collision_kernels_mod, &
	151	ONLY: init_kernels
	152
[1783]	153	USE netcdf_interface, &
	154	ONLY: netcdf_data_format
	155
[1320]	156	USE particle_attributes, &
[1359]	157	ONLY: alloc_factor, bc_par_b, bc_par_lr, bc_par_ns, bc_par_t, &
	158	block_offset, block_offset_def, collision_kernel, &
[1831]	159	curvature_solution_effects, &
[1822]	160	density_ratio, grid_particles, &
[1359]	161	initial_weighting_factor, ibc_par_b, ibc_par_lr, ibc_par_ns, &
	162	ibc_par_t, iran_part, log_z_z0, &
	163	max_number_of_particle_groups, maximum_number_of_particles, &
[1822]	164	min_nr_particle, mpi_particle_type, &
	165	number_of_particles, &
[1320]	166	number_of_particle_groups, number_of_sublayers, &
[1822]	167	offset_ocean_nzt, offset_ocean_nzt_m1, &
[1359]	168	particles, particle_advection_start, particle_groups, &
	169	particle_groups_type, particles_per_point, &
[1822]	170	particle_type, pdx, pdy, pdz, &
[1359]	171	prt_count, psb, psl, psn, psr, pss, pst, &
[1320]	172	radius, random_start_position, read_particles_from_restartfile,&
[1929]	173	seed_follows_topography, sgs_wf_part, sort_count, &
[1822]	174	total_number_of_particles, &
	175	use_sgs_for_particles, &
[1359]	176	write_particle_statistics, uniform_particles, zero_particle, &
	177	z0_av_global
[1320]	178
[1]	179	USE pegrid
	180
[1320]	181	USE random_function_mod, &
	182	ONLY: random_function
[1]	183
[1359]	184	IMPLICIT NONE
[1320]	185
[1359]	186	PRIVATE
	187
[1682]	188	INTEGER(iwp), PARAMETER :: PHASE_INIT = 1 !<
	189	INTEGER(iwp), PARAMETER, PUBLIC :: PHASE_RELEASE = 2 !<
[1359]	190
	191	INTERFACE lpm_init
	192	MODULE PROCEDURE lpm_init
	193	END INTERFACE lpm_init
	194
	195	INTERFACE lpm_create_particle
	196	MODULE PROCEDURE lpm_create_particle
	197	END INTERFACE lpm_create_particle
	198
	199	PUBLIC lpm_init, lpm_create_particle
	200
[1929]	201	CONTAINS
[1359]	202
[1682]	203	!------------------------------------------------------------------------------!
	204	! Description:
	205	! ------------
	206	!> @todo Missing subroutine description.
	207	!------------------------------------------------------------------------------!
[1359]	208	SUBROUTINE lpm_init
	209
	210	USE lpm_collision_kernels_mod, &
	211	ONLY: init_kernels
	212
[1]	213	IMPLICIT NONE
	214
[1682]	215	INTEGER(iwp) :: i !<
	216	INTEGER(iwp) :: j !<
	217	INTEGER(iwp) :: k !<
[1320]	218
[1]	219	#if defined( __parallel )
[1682]	220	INTEGER(iwp), DIMENSION(3) :: blocklengths !<
	221	INTEGER(iwp), DIMENSION(3) :: displacements !<
	222	INTEGER(iwp), DIMENSION(3) :: types !<
[1]	223	#endif
	224
[1682]	225	REAL(wp) :: height_int !<
	226	REAL(wp) :: height_p !<
	227	REAL(wp) :: z_p !<
	228	REAL(wp) :: z0_av_local !<
[1]	229
	230	#if defined( __parallel )
	231	!
	232	!-- Define MPI derived datatype for FORTRAN datatype particle_type (see module
[82]	233	!-- particle_attributes). Integer length is 4 byte, Real is 8 byte
[1359]	234	blocklengths(1) = 19; blocklengths(2) = 6; blocklengths(3) = 1
	235	displacements(1) = 0; displacements(2) = 152; displacements(3) = 176
	236
[1]	237	types(1) = MPI_REAL
	238	types(2) = MPI_INTEGER
	239	types(3) = MPI_UB
	240	CALL MPI_TYPE_STRUCT( 3, blocklengths, displacements, types, &
	241	mpi_particle_type, ierr )
	242	CALL MPI_TYPE_COMMIT( mpi_particle_type, ierr )
	243	#endif
	244
	245	!
[150]	246	!-- In case of oceans runs, the vertical index calculations need an offset,
	247	!-- because otherwise the k indices will become negative
	248	IF ( ocean ) THEN
	249	offset_ocean_nzt = nzt
	250	offset_ocean_nzt_m1 = nzt - 1
	251	ENDIF
	252
[1359]	253	!
	254	!-- Define block offsets for dividing a gridcell in 8 sub cells
[150]	255
[1359]	256	block_offset(0) = block_offset_def (-1,-1,-1)
	257	block_offset(1) = block_offset_def (-1,-1, 0)
	258	block_offset(2) = block_offset_def (-1, 0,-1)
	259	block_offset(3) = block_offset_def (-1, 0, 0)
	260	block_offset(4) = block_offset_def ( 0,-1,-1)
	261	block_offset(5) = block_offset_def ( 0,-1, 0)
	262	block_offset(6) = block_offset_def ( 0, 0,-1)
	263	block_offset(7) = block_offset_def ( 0, 0, 0)
[150]	264	!
[1]	265	!-- Check the number of particle groups.
	266	IF ( number_of_particle_groups > max_number_of_particle_groups ) THEN
[274]	267	WRITE( message_string, * ) 'max_number_of_particle_groups =', &
	268	max_number_of_particle_groups , &
[254]	269	'&number_of_particle_groups reset to ', &
	270	max_number_of_particle_groups
[849]	271	CALL message( 'lpm_init', 'PA0213', 0, 1, 0, 6, 0 )
[1]	272	number_of_particle_groups = max_number_of_particle_groups
	273	ENDIF
	274
	275	!
	276	!-- Set default start positions, if necessary
[1359]	277	IF ( psl(1) == 9999999.9_wp ) psl(1) = -0.5_wp * dx
	278	IF ( psr(1) == 9999999.9_wp ) psr(1) = ( nx + 0.5_wp ) * dx
	279	IF ( pss(1) == 9999999.9_wp ) pss(1) = -0.5_wp * dy
	280	IF ( psn(1) == 9999999.9_wp ) psn(1) = ( ny + 0.5_wp ) * dy
	281	IF ( psb(1) == 9999999.9_wp ) psb(1) = zu(nz/2)
	282	IF ( pst(1) == 9999999.9_wp ) pst(1) = psb(1)
[1]	283
[1359]	284	IF ( pdx(1) == 9999999.9_wp .OR. pdx(1) == 0.0_wp ) pdx(1) = dx
	285	IF ( pdy(1) == 9999999.9_wp .OR. pdy(1) == 0.0_wp ) pdy(1) = dy
	286	IF ( pdz(1) == 9999999.9_wp .OR. pdz(1) == 0.0_wp ) pdz(1) = zu(2) - zu(1)
[1]	287
	288	DO j = 2, number_of_particle_groups
[1359]	289	IF ( psl(j) == 9999999.9_wp ) psl(j) = psl(j-1)
	290	IF ( psr(j) == 9999999.9_wp ) psr(j) = psr(j-1)
	291	IF ( pss(j) == 9999999.9_wp ) pss(j) = pss(j-1)
	292	IF ( psn(j) == 9999999.9_wp ) psn(j) = psn(j-1)
	293	IF ( psb(j) == 9999999.9_wp ) psb(j) = psb(j-1)
	294	IF ( pst(j) == 9999999.9_wp ) pst(j) = pst(j-1)
	295	IF ( pdx(j) == 9999999.9_wp .OR. pdx(j) == 0.0_wp ) pdx(j) = pdx(j-1)
	296	IF ( pdy(j) == 9999999.9_wp .OR. pdy(j) == 0.0_wp ) pdy(j) = pdy(j-1)
	297	IF ( pdz(j) == 9999999.9_wp .OR. pdz(j) == 0.0_wp ) pdz(j) = pdz(j-1)
[1]	298	ENDDO
	299
	300	!
[1929]	301	!-- Allocate arrays required for calculating particle SGS velocities.
	302	!-- Initialize prefactor required for stoachastic Weil equation.
[1822]	303	IF ( use_sgs_for_particles .AND. .NOT. cloud_droplets ) THEN
[849]	304	ALLOCATE( de_dx(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	305	de_dy(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	306	de_dz(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1929]	307
	308	sgs_wf_part = 1.0_wp / 3.0_wp
[849]	309	ENDIF
	310
	311	!
[1314]	312	!-- Allocate array required for logarithmic vertical interpolation of
	313	!-- horizontal particle velocities between the surface and the first vertical
	314	!-- grid level. In order to avoid repeated CPU cost-intensive CALLS of
	315	!-- intrinsic FORTRAN procedure LOG(z/z0), LOG(z/z0) is precalculated for
	316	!-- several heights. Splitting into 20 sublayers turned out to be sufficient.
	317	!-- To obtain exact height levels of particles, linear interpolation is applied
	318	!-- (see lpm_advec.f90).
[1691]	319	IF ( constant_flux_layer ) THEN
[1314]	320
	321	ALLOCATE ( log_z_z0(0:number_of_sublayers) )
	322	z_p = zu(nzb+1) - zw(nzb)
	323
	324	!
	325	!-- Calculate horizontal mean value of z0 used for logartihmic
	326	!-- interpolation. Note: this is not exact for heterogeneous z0.
	327	!-- However, sensitivity studies showed that the effect is
	328	!-- negligible.
	329	z0_av_local = SUM( z0(nys:nyn,nxl:nxr) )
[1359]	330	z0_av_global = 0.0_wp
[1314]	331
[1320]	332	#if defined( __parallel )
[1314]	333	CALL MPI_ALLREDUCE(z0_av_local, z0_av_global, 1, MPI_REAL, MPI_SUM, &
	334	comm2d, ierr )
[1320]	335	#else
	336	z0_av_global = z0_av_local
	337	#endif
[1314]	338
	339	z0_av_global = z0_av_global / ( ( ny + 1 ) * ( nx + 1 ) )
	340	!
	341	!-- Horizontal wind speed is zero below and at z0
[1359]	342	log_z_z0(0) = 0.0_wp
[1314]	343	!
	344	!-- Calculate vertical depth of the sublayers
[1322]	345	height_int = ( z_p - z0_av_global ) / REAL( number_of_sublayers, KIND=wp )
[1314]	346	!
	347	!-- Precalculate LOG(z/z0)
[1929]	348	height_p = z0_av_global
[1314]	349	DO k = 1, number_of_sublayers
	350
	351	height_p = height_p + height_int
	352	log_z_z0(k) = LOG( height_p / z0_av_global )
	353
	354	ENDDO
	355
	356	ENDIF
	357
	358	!
[1359]	359	!-- Check boundary condition and set internal variables
	360	SELECT CASE ( bc_par_b )
	361
	362	CASE ( 'absorb' )
	363	ibc_par_b = 1
	364
	365	CASE ( 'reflect' )
	366	ibc_par_b = 2
	367
	368	CASE DEFAULT
	369	WRITE( message_string, * ) 'unknown boundary condition ', &
	370	'bc_par_b = "', TRIM( bc_par_b ), '"'
	371	CALL message( 'lpm_init', 'PA0217', 1, 2, 0, 6, 0 )
	372
	373	END SELECT
	374	SELECT CASE ( bc_par_t )
	375
	376	CASE ( 'absorb' )
	377	ibc_par_t = 1
	378
	379	CASE ( 'reflect' )
	380	ibc_par_t = 2
	381
	382	CASE DEFAULT
	383	WRITE( message_string, * ) 'unknown boundary condition ', &
	384	'bc_par_t = "', TRIM( bc_par_t ), '"'
	385	CALL message( 'lpm_init', 'PA0218', 1, 2, 0, 6, 0 )
	386
	387	END SELECT
	388	SELECT CASE ( bc_par_lr )
	389
	390	CASE ( 'cyclic' )
	391	ibc_par_lr = 0
	392
	393	CASE ( 'absorb' )
	394	ibc_par_lr = 1
	395
	396	CASE ( 'reflect' )
	397	ibc_par_lr = 2
	398
	399	CASE DEFAULT
	400	WRITE( message_string, * ) 'unknown boundary condition ', &
	401	'bc_par_lr = "', TRIM( bc_par_lr ), '"'
	402	CALL message( 'lpm_init', 'PA0219', 1, 2, 0, 6, 0 )
	403
	404	END SELECT
	405	SELECT CASE ( bc_par_ns )
	406
	407	CASE ( 'cyclic' )
	408	ibc_par_ns = 0
	409
	410	CASE ( 'absorb' )
	411	ibc_par_ns = 1
	412
	413	CASE ( 'reflect' )
	414	ibc_par_ns = 2
	415
	416	CASE DEFAULT
	417	WRITE( message_string, * ) 'unknown boundary condition ', &
	418	'bc_par_ns = "', TRIM( bc_par_ns ), '"'
	419	CALL message( 'lpm_init', 'PA0220', 1, 2, 0, 6, 0 )
	420
	421	END SELECT
	422
	423	!
[828]	424	!-- Initialize collision kernels
	425	IF ( collision_kernel /= 'none' ) CALL init_kernels
	426
	427	!
[1]	428	!-- For the first model run of a possible job chain initialize the
[849]	429	!-- particles, otherwise read the particle data from restart file.
[1]	430	IF ( TRIM( initializing_actions ) == 'read_restart_data' &
	431	.AND. read_particles_from_restartfile ) THEN
	432
[849]	433	CALL lpm_read_restart_file
[1]	434
	435	ELSE
	436
	437	!
	438	!-- Allocate particle arrays and set attributes of the initial set of
	439	!-- particles, which can be also periodically released at later times.
[1359]	440	ALLOCATE( prt_count(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	441	grid_particles(nzb+1:nzt,nys:nyn,nxl:nxr) )
[1]	442
[1359]	443	maximum_number_of_particles = 0
	444	number_of_particles = 0
[792]	445
	446	sort_count = 0
[1359]	447	prt_count = 0
[792]	448
[1]	449	!
	450	!-- Initialize all particles with dummy values (otherwise errors may
	451	!-- occur within restart runs). The reason for this is still not clear
	452	!-- and may be presumably caused by errors in the respective user-interface.
[1359]	453	zero_particle = particle_type( 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	454	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	455	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, &
	456	0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp, 0, 0, 0, &
[1929]	457	0, .FALSE., -1 )
[1822]	458
[1359]	459	particle_groups = particle_groups_type( 0.0_wp, 0.0_wp, 0.0_wp, 0.0_wp )
[1]	460
	461	!
	462	!-- Set values for the density ratio and radius for all particle
	463	!-- groups, if necessary
[1359]	464	IF ( density_ratio(1) == 9999999.9_wp ) density_ratio(1) = 0.0_wp
	465	IF ( radius(1) == 9999999.9_wp ) radius(1) = 0.0_wp
[1]	466	DO i = 2, number_of_particle_groups
[1359]	467	IF ( density_ratio(i) == 9999999.9_wp ) THEN
[1]	468	density_ratio(i) = density_ratio(i-1)
	469	ENDIF
[1359]	470	IF ( radius(i) == 9999999.9_wp ) radius(i) = radius(i-1)
[1]	471	ENDDO
	472
	473	DO i = 1, number_of_particle_groups
[1359]	474	IF ( density_ratio(i) /= 0.0_wp .AND. radius(i) == 0 ) THEN
[254]	475	WRITE( message_string, * ) 'particle group #', i, 'has a', &
	476	'density ratio /= 0 but radius = 0'
[849]	477	CALL message( 'lpm_init', 'PA0215', 1, 2, 0, 6, 0 )
[1]	478	ENDIF
	479	particle_groups(i)%density_ratio = density_ratio(i)
	480	particle_groups(i)%radius = radius(i)
	481	ENDDO
	482
	483	!
[1359]	484	!-- Set a seed value for the random number generator to be exclusively
	485	!-- used for the particle code. The generated random numbers should be
	486	!-- different on the different PEs.
	487	iran_part = iran_part + myid
	488
[1725]	489	CALL lpm_create_particle (PHASE_INIT)
[1359]	490	!
	491	!-- User modification of initial particles
	492	CALL user_lpm_init
	493
	494	!
	495	!-- Open file for statistical informations about particle conditions
	496	IF ( write_particle_statistics ) THEN
	497	CALL check_open( 80 )
	498	WRITE ( 80, 8000 ) current_timestep_number, simulated_time, &
	499	number_of_particles, &
	500	maximum_number_of_particles
	501	CALL close_file( 80 )
	502	ENDIF
	503
	504	ENDIF
	505
	506	!
	507	!-- To avoid programm abort, assign particles array to the local version of
	508	!-- first grid cell
	509	number_of_particles = prt_count(nzb+1,nys,nxl)
	510	particles => grid_particles(nzb+1,nys,nxl)%particles(1:number_of_particles)
	511	!
	512	!-- Formats
	513	8000 FORMAT (I6,1X,F7.2,4X,I10,71X,I10)
	514
	515	END SUBROUTINE lpm_init
	516
[1682]	517	!------------------------------------------------------------------------------!
	518	! Description:
	519	! ------------
	520	!> @todo Missing subroutine description.
	521	!------------------------------------------------------------------------------!
[1359]	522	SUBROUTINE lpm_create_particle (phase)
	523
	524	USE lpm_exchange_horiz_mod, &
	525	ONLY: lpm_exchange_horiz, lpm_move_particle, realloc_particles_array
	526
	527	USE lpm_pack_arrays_mod, &
	528	ONLY: lpm_pack_all_arrays
	529
[1871]	530	USE particle_attributes, &
[1929]	531	ONLY: deleted_particles, monodisperse_aerosols
[1871]	532
[1359]	533	IMPLICIT NONE
	534
[1929]	535	INTEGER(iwp) :: alloc_size !< relative increase of allocated memory for particles
	536	INTEGER(iwp) :: i !< loop variable ( particle groups )
	537	INTEGER(iwp) :: ip !< index variable along x
	538	INTEGER(iwp) :: j !< loop variable ( particles per point )
	539	INTEGER(iwp) :: jp !< index variable along y
	540	INTEGER(iwp) :: kp !< index variable along z
	541	INTEGER(iwp) :: loop_stride !< loop variable for initialization
	542	INTEGER(iwp) :: n !< loop variable ( number of particles )
	543	INTEGER(iwp) :: new_size !< new size of allocated memory for particles
[1359]	544
[1929]	545	INTEGER(iwp), INTENT(IN) :: phase !< mode of inititialization
[1359]	546
[1929]	547	INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: local_count !< start address of new particle
	548	INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: local_start !< start address of new particle
[1359]	549
[1929]	550	LOGICAL :: first_stride !< flag for initialization
[1359]	551
[1929]	552	REAL(wp) :: pos_x !< increment for particle position in x
	553	REAL(wp) :: pos_y !< increment for particle position in y
	554	REAL(wp) :: pos_z !< increment for particle position in z
	555	REAL(wp) :: rand_contr !< dummy argument for random position
[1359]	556
[1929]	557	TYPE(particle_type),TARGET :: tmp_particle !< temporary particle used for initialization
[1359]	558
	559	!
	560	!-- Calculate particle positions and store particle attributes, if
	561	!-- particle is situated on this PE
	562	DO loop_stride = 1, 2
	563	first_stride = (loop_stride == 1)
	564	IF ( first_stride ) THEN
	565	local_count = 0 ! count number of particles
	566	ELSE
	567	local_count = prt_count ! Start address of new particles
	568	ENDIF
	569
[1]	570	n = 0
	571	DO i = 1, number_of_particle_groups
	572
	573	pos_z = psb(i)
	574
	575	DO WHILE ( pos_z <= pst(i) )
	576
	577	pos_y = pss(i)
	578
	579	DO WHILE ( pos_y <= psn(i) )
	580
[1359]	581	IF ( pos_y >= ( nys - 0.5_wp ) * dy .AND. &
	582	pos_y < ( nyn + 0.5_wp ) * dy ) THEN
[1]	583
	584	pos_x = psl(i)
	585
[1575]	586	xloop: DO WHILE ( pos_x <= psr(i) )
[1]	587
[1359]	588	IF ( pos_x >= ( nxl - 0.5_wp ) * dx .AND. &
	589	pos_x < ( nxr + 0.5_wp ) * dx ) THEN
[1]	590
	591	DO j = 1, particles_per_point
	592
	593	n = n + 1
[1359]	594	tmp_particle%x = pos_x
	595	tmp_particle%y = pos_y
	596	tmp_particle%z = pos_z
	597	tmp_particle%age = 0.0_wp
	598	tmp_particle%age_m = 0.0_wp
	599	tmp_particle%dt_sum = 0.0_wp
[1822]	600	tmp_particle%dvrp_psize = 0.0_wp !unused
[1359]	601	tmp_particle%e_m = 0.0_wp
[824]	602	IF ( curvature_solution_effects ) THEN
	603	!
	604	!-- Initial values (internal timesteps, derivative)
	605	!-- for Rosenbrock method
[1871]	606	tmp_particle%rvar1 = 1.0E-6_wp !last Rosenbrock timestep
	607	tmp_particle%rvar2 = 0.1E-6_wp !dry aerosol radius
	608	tmp_particle%rvar3 = -9999999.9_wp !unused
[824]	609	ELSE
	610	!
	611	!-- Initial values for SGS velocities
[1359]	612	tmp_particle%rvar1 = 0.0_wp
	613	tmp_particle%rvar2 = 0.0_wp
	614	tmp_particle%rvar3 = 0.0_wp
[824]	615	ENDIF
[1359]	616	tmp_particle%speed_x = 0.0_wp
	617	tmp_particle%speed_y = 0.0_wp
	618	tmp_particle%speed_z = 0.0_wp
	619	tmp_particle%origin_x = pos_x
	620	tmp_particle%origin_y = pos_y
	621	tmp_particle%origin_z = pos_z
	622	tmp_particle%radius = particle_groups(i)%radius
	623	tmp_particle%weight_factor = initial_weighting_factor
	624	tmp_particle%class = 1
	625	tmp_particle%group = i
[1822]	626	tmp_particle%tailpoints = 0 !unused
[1359]	627	tmp_particle%particle_mask = .TRUE.
[1822]	628	tmp_particle%tail_id = 0 !unused
	629
[1929]	630
[1]	631	!
[1575]	632	!-- Determine the grid indices of the particle position
[1359]	633	ip = ( tmp_particle%x + 0.5_wp * dx ) * ddx
	634	jp = ( tmp_particle%y + 0.5_wp * dy ) * ddy
[1685]	635	kp = tmp_particle%z / dz + 1 + offset_ocean_nzt
[1]	636
[1575]	637	IF ( seed_follows_topography ) THEN
	638	!
	639	!-- Particle height is given relative to topography
	640	kp = kp + nzb_w_inner(jp,ip)
[1929]	641	tmp_particle%z = tmp_particle%z + &
	642	zw(nzb_w_inner(jp,ip))
[1575]	643	IF ( kp > nzt ) THEN
	644	pos_x = pos_x + pdx(i)
	645	CYCLE xloop
	646	ENDIF
[1929]	647	ELSEIF ( .NOT. seed_follows_topography .AND. &
	648	tmp_particle%z <= zw(nzb_w_inner(jp,ip)) ) THEN
	649	pos_x = pos_x + pdx(i)
	650	CYCLE xloop
[1575]	651	ENDIF
	652
[1359]	653	local_count(kp,jp,ip) = local_count(kp,jp,ip) + 1
	654	IF ( .NOT. first_stride ) THEN
	655	IF ( ip < nxl .OR. jp < nys .OR. kp < nzb+1 ) THEN
	656	write(6,*) 'xl ',ip,jp,kp,nxl,nys,nzb+1
	657	ENDIF
	658	IF ( ip > nxr .OR. jp > nyn .OR. kp > nzt ) THEN
	659	write(6,*) 'xu ',ip,jp,kp,nxr,nyn,nzt
	660	ENDIF
	661	grid_particles(kp,jp,ip)%particles(local_count(kp,jp,ip)) = tmp_particle
[1929]	662
[1359]	663	ENDIF
[1]	664	ENDDO
	665
	666	ENDIF
	667
	668	pos_x = pos_x + pdx(i)
	669
[1575]	670	ENDDO xloop
[1]	671
	672	ENDIF
	673
	674	pos_y = pos_y + pdy(i)
	675
	676	ENDDO
	677
	678	pos_z = pos_z + pdz(i)
	679
	680	ENDDO
	681
	682	ENDDO
	683
[1359]	684	IF ( first_stride ) THEN
	685	DO ip = nxl, nxr
	686	DO jp = nys, nyn
	687	DO kp = nzb+1, nzt
	688	IF ( phase == PHASE_INIT ) THEN
	689	IF ( local_count(kp,jp,ip) > 0 ) THEN
	690	alloc_size = MAX( INT( local_count(kp,jp,ip) * &
	691	( 1.0_wp + alloc_factor / 100.0_wp ) ), &
	692	min_nr_particle )
	693	ELSE
	694	alloc_size = min_nr_particle
	695	ENDIF
	696	ALLOCATE(grid_particles(kp,jp,ip)%particles(1:alloc_size))
	697	DO n = 1, alloc_size
	698	grid_particles(kp,jp,ip)%particles(n) = zero_particle
	699	ENDDO
	700	ELSEIF ( phase == PHASE_RELEASE ) THEN
	701	IF ( local_count(kp,jp,ip) > 0 ) THEN
	702	new_size = local_count(kp,jp,ip) + prt_count(kp,jp,ip)
	703	alloc_size = MAX( INT( new_size * ( 1.0_wp + &
	704	alloc_factor / 100.0_wp ) ), min_nr_particle )
	705	IF( alloc_size > SIZE( grid_particles(kp,jp,ip)%particles) ) THEN
	706	CALL realloc_particles_array(ip,jp,kp,alloc_size)
	707	ENDIF
	708	ENDIF
	709	ENDIF
[1929]	710
[1359]	711	ENDDO
	712	ENDDO
	713	ENDDO
	714	ENDIF
[1929]	715
[1359]	716	ENDDO
[1]	717
[1359]	718	local_start = prt_count+1
	719	prt_count = local_count
[1871]	720
[1]	721	!
[1871]	722	!-- Initialize aerosol background spectrum
	723	IF ( curvature_solution_effects .AND. .NOT. monodisperse_aerosols ) THEN
	724	CALL lpm_init_aerosols(local_start)
	725	ENDIF
	726
	727	!
[1929]	728	!-- Add random fluctuation to particle positions.
[1359]	729	IF ( random_start_position ) THEN
	730	DO ip = nxl, nxr
	731	DO jp = nys, nyn
	732	DO kp = nzb+1, nzt
	733	number_of_particles = prt_count(kp,jp,ip)
	734	IF ( number_of_particles <= 0 ) CYCLE
	735	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
[1929]	736	!
	737	!-- Move only new particles. Moreover, limit random fluctuation
	738	!-- in order to prevent that particles move more than one grid box,
	739	!-- which would lead to problems concerning particle exchange
	740	!-- between processors in case pdx/pdy are larger than dx/dy,
	741	!-- respectively.
	742	DO n = local_start(kp,jp,ip), number_of_particles
[1359]	743	IF ( psl(particles(n)%group) /= psr(particles(n)%group) ) THEN
[1929]	744	rand_contr = ( random_function( iran_part ) - 0.5_wp ) * &
	745	pdx(particles(n)%group)
[1359]	746	particles(n)%x = particles(n)%x + &
[1929]	747	MERGE( rand_contr, SIGN( dx, rand_contr ), &
	748	ABS( rand_contr ) < dx &
	749	)
[1359]	750	ENDIF
	751	IF ( pss(particles(n)%group) /= psn(particles(n)%group) ) THEN
[1929]	752	rand_contr = ( random_function( iran_part ) - 0.5_wp ) * &
	753	pdy(particles(n)%group)
[1359]	754	particles(n)%y = particles(n)%y + &
[1929]	755	MERGE( rand_contr, SIGN( dy, rand_contr ), &
	756	ABS( rand_contr ) < dy &
	757	)
[1359]	758	ENDIF
	759	IF ( psb(particles(n)%group) /= pst(particles(n)%group) ) THEN
[1929]	760	rand_contr = ( random_function( iran_part ) - 0.5_wp ) * &
	761	pdz(particles(n)%group)
[1359]	762	particles(n)%z = particles(n)%z + &
[1929]	763	MERGE( rand_contr, SIGN( dz, rand_contr ), &
	764	ABS( rand_contr ) < dz &
	765	)
[1359]	766	ENDIF
	767	ENDDO
[1]	768	!
[1929]	769	!-- Identify particles located outside the model domain and reflect
	770	!-- or absorb them if necessary.
[1359]	771	CALL lpm_boundary_conds( 'bottom/top' )
[1929]	772	!
	773	!-- Furthermore, remove particles located in topography. Note, as
	774	!-- the particle speed is still zero at this point, wall
	775	!-- reflection boundary conditions will not work in this case.
	776	particles => &
	777	grid_particles(kp,jp,ip)%particles(1:number_of_particles)
	778	DO n = local_start(kp,jp,ip), number_of_particles
	779	i = ( particles(n)%x + 0.5_wp * dx ) * ddx
	780	j = ( particles(n)%y + 0.5_wp * dy ) * ddy
	781	IF ( particles(n)%z <= zw(nzb_w_inner(j,i)) ) THEN
	782	particles(n)%particle_mask = .FALSE.
	783	deleted_particles = deleted_particles + 1
	784	ENDIF
	785	ENDDO
[1359]	786	ENDDO
	787	ENDDO
	788	ENDDO
[1]	789	!
[1359]	790	!-- Exchange particles between grid cells and processors
	791	CALL lpm_move_particle
	792	CALL lpm_exchange_horiz
[1]	793
[1359]	794	ENDIF
[1]	795	!
[1359]	796	!-- In case of random_start_position, delete particles identified by
	797	!-- lpm_exchange_horiz and lpm_boundary_conds. Then sort particles into blocks,
	798	!-- which is needed for a fast interpolation of the LES fields on the particle
	799	!-- position.
	800	CALL lpm_pack_all_arrays
[1]	801
	802	!
[1359]	803	!-- Determine maximum number of particles (i.e., all possible particles that
	804	!-- have been allocated) and the current number of particles
	805	DO ip = nxl, nxr
	806	DO jp = nys, nyn
	807	DO kp = nzb+1, nzt
	808	maximum_number_of_particles = maximum_number_of_particles &
	809	+ SIZE(grid_particles(kp,jp,ip)%particles)
	810	number_of_particles = number_of_particles &
	811	+ prt_count(kp,jp,ip)
[1]	812	ENDDO
[1359]	813	ENDDO
	814	ENDDO
[1]	815	!
[1822]	816	!-- Calculate the number of particles of the total domain
[1]	817	#if defined( __parallel )
[1359]	818	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	819	CALL MPI_ALLREDUCE( number_of_particles, total_number_of_particles, 1, &
	820	MPI_INTEGER, MPI_SUM, comm2d, ierr )
[1]	821	#else
[1359]	822	total_number_of_particles = number_of_particles
[1]	823	#endif
	824
[1359]	825	RETURN
[1]	826
[1359]	827	END SUBROUTINE lpm_create_particle
[336]	828
[1871]	829	SUBROUTINE lpm_init_aerosols(local_start)
	830
	831	USE arrays_3d, &
	832	ONLY: hyp, pt, q
	833
	834	USE cloud_parameters, &
	835	ONLY: l_d_rv, rho_l
	836
	837	USE constants, &
	838	ONLY: pi
	839
	840	USE kinds
	841
	842	USE particle_attributes, &
	843	ONLY: init_aerosol_probabilistic, molecular_weight_of_solute, &
	844	molecular_weight_of_water, n1, n2, n3, rho_s, rm1, rm2, rm3, &
	845	s1, s2, s3, vanthoff
	846
	847	IMPLICIT NONE
	848
	849	REAL(wp), DIMENSION(:), ALLOCATABLE :: cdf !< CDF of aerosol spectrum
	850	REAL(wp), DIMENSION(:), ALLOCATABLE :: r_temp !< dry aerosol radius spectrum
	851
	852	REAL(wp) :: bfactor !< solute effects
	853	REAL(wp) :: dr !< width of radius bin
	854	REAL(wp) :: e_a !< vapor pressure
	855	REAL(wp) :: e_s !< saturation vapor pressure
	856	REAL(wp) :: n_init !< sum of all aerosol concentrations
	857	REAL(wp) :: pdf !< PDF of aerosol spectrum
	858	REAL(wp) :: rmin = 1.0e-8_wp !< minimum aerosol radius
	859	REAL(wp) :: rmax = 1.0e-6_wp !< maximum aerosol radius
	860	REAL(wp) :: rs_rand !< random number
	861	REAL(wp) :: r_mid !< mean radius
	862	REAL(wp) :: t_int !< temperature
	863	REAL(wp) :: weight_sum !< sum of all weighting factors
	864
[1890]	865	INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg), INTENT(IN) :: local_start !<
[1871]	866
	867	INTEGER(iwp) :: n !<
	868	INTEGER(iwp) :: nn !<
	869	INTEGER(iwp) :: no_bins = 999 !< number of bins
	870	INTEGER(iwp) :: ip !<
	871	INTEGER(iwp) :: jp !<
	872	INTEGER(iwp) :: kp !<
	873
	874	LOGICAL :: new_pdf = .FALSE. !< check if aerosol PDF has to be recalculated
	875
	876	!
	877	!-- Compute aerosol background distribution
	878	IF ( init_aerosol_probabilistic ) THEN
	879	ALLOCATE( cdf(0:no_bins), r_temp(0:no_bins) )
	880	DO n = 0, no_bins
	881	r_temp(n) = EXP( LOG(rmin) + ( LOG(rmax) - LOG(rmin ) ) / &
	882	REAL(no_bins, KIND=wp) * REAL(n, KIND=wp) )
	883
	884	cdf(n) = 0.0_wp
	885	n_init = n1 + n2 + n3
	886	IF ( n1 > 0.0_wp ) THEN
	887	cdf(n) = cdf(n) + n1 / n_init * ( 0.5_wp + 0.5_wp * &
	888	ERF( LOG( r_temp(n) / rm1 ) / &
	889	( SQRT(2.0_wp) * LOG(s1) ) &
	890	) )
	891	ENDIF
	892	IF ( n2 > 0.0_wp ) THEN
	893	cdf(n) = cdf(n) + n2 / n_init * ( 0.5_wp + 0.5_wp * &
	894	ERF( LOG( r_temp(n) / rm2 ) / &
	895	( SQRT(2.0_wp) * LOG(s2) ) &
	896	) )
	897	ENDIF
	898	IF ( n3 > 0.0_wp ) THEN
	899	cdf(n) = cdf(n) + n3 / n_init * ( 0.5_wp + 0.5_wp * &
	900	ERF( LOG( r_temp(n) / rm3 ) / &
	901	( SQRT(2.0_wp) * LOG(s3) ) &
	902	) )
	903	ENDIF
	904
	905	ENDDO
	906	ENDIF
	907
	908	DO ip = nxl, nxr
	909	DO jp = nys, nyn
	910	DO kp = nzb+1, nzt
	911
	912	number_of_particles = prt_count(kp,jp,ip)
	913	IF ( number_of_particles <= 0 ) CYCLE
	914	particles => grid_particles(kp,jp,ip)%particles(1:number_of_particles)
	915	!
	916	!-- Initialize the aerosols with a predefined spectral distribution
	917	!-- of the dry radius (logarithmically increasing bins) and a varying
	918	!-- weighting factor
	919	IF ( .NOT. init_aerosol_probabilistic ) THEN
	920
	921	new_pdf = .FALSE.
	922	IF ( .NOT. ALLOCATED( r_temp ) ) THEN
	923	new_pdf = .TRUE.
	924	ELSE
	925	IF ( SIZE( r_temp ) .NE. &
	926	number_of_particles - local_start(kp,jp,ip) + 2 ) THEN
	927	new_pdf = .TRUE.
	928	DEALLOCATE( r_temp )
	929	ENDIF
	930	ENDIF
	931
	932	IF ( new_pdf ) THEN
	933
	934	no_bins = number_of_particles + 1 - local_start(kp,jp,ip)
	935	ALLOCATE( r_temp(0:no_bins) )
	936
	937	DO n = 0, no_bins
	938	r_temp(n) = EXP( LOG(rmin) + ( LOG(rmax) - LOG(rmin ) ) / &
	939	REAL(no_bins, KIND=wp) * &
	940	REAL(n, KIND=wp) )
	941	ENDDO
	942
	943	ENDIF
	944
	945	!
	946	!-- Calculate radius and concentration of each aerosol
	947	DO n = local_start(kp,jp,ip), number_of_particles
	948
	949	nn = n - local_start(kp,jp,ip)
	950
	951	r_mid = SQRT( r_temp(nn) * r_temp(nn+1) )
	952	dr = r_temp(nn+1) - r_temp(nn)
	953
	954	pdf = 0.0_wp
	955	n_init = n1 + n2 + n3
	956	IF ( n1 > 0.0_wp ) THEN
	957	pdf = pdf + n1 / n_init * ( 1.0_wp / ( r_mid * LOG(s1) * &
	958	SQRT( 2.0_wp * pi ) &
	959	) * &
	960	EXP( -( LOG( r_mid / rm1 ) )**2 / &
	961	( 2.0_wp * LOG(s1)**2 ) &
	962	) &
	963	)
	964	ENDIF
	965	IF ( n2 > 0.0_wp ) THEN
	966	pdf = pdf + n2 / n_init * ( 1.0_wp / ( r_mid * LOG(s2) * &
	967	SQRT( 2.0_wp * pi ) &
	968	) * &
	969	EXP( -( LOG( r_mid / rm2 ) )**2 / &
	970	( 2.0_wp * LOG(s2)**2 ) &
	971	) &
	972	)
	973	ENDIF
	974	IF ( n3 > 0.0_wp ) THEN
	975	pdf = pdf + n3 / n_init * ( 1.0_wp / ( r_mid * LOG(s3) * &
	976	SQRT( 2.0_wp * pi ) &
	977	) * &
	978	EXP( -( LOG( r_mid / rm3 ) )**2 / &
	979	( 2.0_wp * LOG(s3)**2 ) &
	980	) &
	981	)
	982	ENDIF
	983
	984	particles(n)%rvar2 = r_mid
	985	particles(n)%weight_factor = pdf * dr
	986
	987	END DO
	988	!
	989	!-- Adjust weighting factors to initialize the same number of aerosols
	990	!-- in every grid box
	991	weight_sum = SUM(particles(local_start(kp,jp,ip):number_of_particles)%weight_factor)
	992
	993	particles(local_start(kp,jp,ip):number_of_particles)%weight_factor = &
	994	particles(local_start(kp,jp,ip):number_of_particles)%weight_factor / &
	995	weight_sum * initial_weighting_factor * ( no_bins + 1 )
	996
	997	ENDIF
	998	!
	999	!-- Initialize the aerosols with a predefined weighting factor but
	1000	!-- a randomly choosen dry radius
	1001	IF ( init_aerosol_probabilistic ) THEN
	1002
	1003	DO n = local_start(kp,jp,ip), number_of_particles !only new particles
	1004
	1005	rs_rand = -1.0_wp
	1006	DO WHILE ( rs_rand .LT. cdf(0) .OR. rs_rand .GE. cdf(no_bins) )
	1007	rs_rand = random_function( iran_part )
	1008	ENDDO
	1009	!
	1010	!-- Determine aerosol dry radius by a random number generator
	1011	DO nn = 0, no_bins-1
	1012	IF ( cdf(nn) .LE. rs_rand .AND. cdf(nn+1) .GT. rs_rand ) THEN
	1013	particles(n)%rvar2 = r_temp(nn) + ( r_temp(nn+1) - r_temp(nn) ) / &
	1014	( cdf(nn+1) - cdf(nn) ) * ( rs_rand - cdf(nn) )
	1015	EXIT
	1016	ENDIF
	1017	ENDDO
	1018
	1019	ENDDO
	1020
	1021	ENDIF
	1022
	1023	!
	1024	!-- Set particle radius to equilibrium radius based on the environmental
	1025	!-- supersaturation (Khvorostyanov and Curry, 2007, JGR). This avoids
	1026	!-- the sometimes lengthy growth toward their equilibrium radius within
	1027	!-- the simulation.
	1028	t_int = pt(kp,jp,ip) * ( hyp(kp) / 100000.0_wp )**0.286_wp
	1029
	1030	e_s = 611.0_wp * EXP( l_d_rv * ( 3.6609E-3_wp - 1.0_wp / t_int ) )
	1031	e_a = q(kp,jp,ip) * hyp(kp) / ( 0.378_wp * q(kp,jp,ip) + 0.622_wp )
	1032
	1033	!
[1890]	1034	!-- The formula is only valid for subsaturated environments. For
	1035	!-- supersaturations higher than -1 %, the supersaturation is set to -1%.
	1036	IF ( e_a / e_s < 0.99_wp ) THEN
[1871]	1037
	1038	DO n = local_start(kp,jp,ip), number_of_particles !only new particles
	1039
	1040	bfactor = vanthoff * molecular_weight_of_water * &
	1041	rho_s * particles(n)%rvar2**3 / &
	1042	( molecular_weight_of_solute * rho_l )
	1043	particles(n)%radius = particles(n)%rvar2 * ( bfactor / &
	1044	particles(n)%rvar23 )(1.0_wp/3.0_wp) *&
	1045	( 1.0_wp - e_a / e_s )**(-1.0_wp/3.0_wp)
	1046
	1047	ENDDO
	1048
[1890]	1049	ELSE
	1050
	1051	DO n = local_start(kp,jp,ip), number_of_particles !only new particles
	1052
	1053	bfactor = vanthoff * molecular_weight_of_water * &
	1054	rho_s * particles(n)%rvar2**3 / &
	1055	( molecular_weight_of_solute * rho_l )
	1056	particles(n)%radius = particles(n)%rvar2 * ( bfactor / &
	1057	particles(n)%rvar23 )(1.0_wp/3.0_wp) *&
	1058	0.01_wp**(-1.0_wp/3.0_wp)
	1059
	1060	ENDDO
	1061
[1871]	1062	ENDIF
	1063
	1064	ENDDO
	1065	ENDDO
	1066	ENDDO
	1067	!
	1068	!-- Deallocate used arrays
	1069	IF ( ALLOCATED(r_temp) ) DEALLOCATE( r_temp )
	1070	IF ( ALLOCATED(cdf) ) DEALLOCATE( cdf )
	1071
	1072	END SUBROUTINE lpm_init_aerosols
	1073
[1359]	1074	END MODULE lpm_init_mod

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