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radiation_aerosol_optics.F90 @ 4945

Last change on this file since 4945 was 4853, checked in by idelkadi, 8 months ago

Ecrad update in LMDZ / Implementation of Ecrad double call in LMDZ

version 1.6.1 (commit 210d7911380f53a788c3cad73b3cf9b4e022ef87)
interface routines between lmdz and ecrad grouped in a new "lmdz" directory
double call method redesigned so as to go through the Ecrad initialization and configuration part only once for the entire simulation
clean-up in the read.F routine: delete unitules arguments
modification of default gas model in namelist (default: ECCKD)

File size: 48.7 KB

Line
1	! radiation_aerosol_optics.F90 - Computing aerosol optical properties
2	!
3	! (C) Copyright 2015- ECMWF.
4	!
5	! This software is licensed under the terms of the Apache Licence Version 2.0
6	! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
7	!
8	! In applying this licence, ECMWF does not waive the privileges and immunities
9	! granted to it by virtue of its status as an intergovernmental organisation
10	! nor does it submit to any jurisdiction.
11	!
12	! Author: Robin Hogan
13	! Email: r.j.hogan@ecmwf.int
14	!
15	! Modifications
16	! 2018-04-15 R. Hogan Add "direct" option
17	! 2020-11-14 R. Hogan Add setup_general_aerosol_optics for ecCKD compatibility
18	! 2022-03-27 R. Hogan Add setup_general_aerosol_optics_legacy to use RRTM aerosol files with ecCKD
19	! 2022-11-22 P. Ukkonen / R. Hogan Optimizations to enhance vectorization
20
21	#include "ecrad_config.h"
22
23	module radiation_aerosol_optics
24
25	implicit none
26	public
27
28	contains
29
30	! Provides the elemental function "delta_eddington_extensive"
31	#include "radiation_delta_eddington.h"
32
33	!---------------------------------------------------------------------
34	! Load aerosol scattering data; this subroutine delegates to one
35	! in radiation_aerosol_optics_data.F90
36	subroutine setup_aerosol_optics(config)
37
38	use parkind1, only : jprb
39	use yomhook, only : lhook, dr_hook, jphook
40	use radiation_config, only : config_type
41	use radiation_aerosol_optics_data, only : aerosol_optics_type
42	use radiation_io, only : nulerr, radiation_abort
43
44	type(config_type), intent(inout) :: config
45
46	real(jphook) :: hook_handle
47
48	if (lhook) call dr_hook('radiation_aerosol_optics:setup_aerosol_optics',0,hook_handle)
49
50	if (config%n_aerosol_types > 0) then
51	! Load data from file and prepare to map config%n_aerosol_types
52	! aerosol types
53	if (config%use_general_aerosol_optics) then
54	! Read file containing high spectral resolution optical
55	! properties and average to the spectral intervals of the
56	! current gas-optics scheme
57	call setup_general_aerosol_optics(config)
58	else
59	! Read file containing optical properties already in the bands
60	! of the gas-optics scheme
61	call config%aerosol_optics%setup(trim(config%aerosol_optics_file_name), &
62	& iverbose=config%iverbosesetup)
63	end if
64
65	call config%aerosol_optics%initialize_types(config%n_aerosol_types)
66
67	! Check agreement in number of bands
68	if (config%n_bands_lw /= config%aerosol_optics%n_bands_lw) then
69	write(nulerr,'(a,i0,a,i0,a)') '*** Error: number of longwave bands (', &
70	& config%n_bands_lw, ') does not match aerosol optics look-up table (', &
71	& config%aerosol_optics%n_bands_lw, ')'
72	call radiation_abort()
73	end if
74	if (config%n_bands_sw /= config%aerosol_optics%n_bands_sw) then
75	write(nulerr,'(a)') '*** Error: number of shortwave bands does not match aerosol optics look-up table'
76	call radiation_abort()
77	end if
78
79	! Map aerosol types to those loaded from the data file
80	call config%aerosol_optics%set_types(config%i_aerosol_type_map(1:config%n_aerosol_types))
81	end if
82
83	if (config%iverbosesetup >= 1) then
84	call config%aerosol_optics%print_description(config%i_aerosol_type_map(1:config%n_aerosol_types))
85	end if
86
87	if (lhook) call dr_hook('radiation_aerosol_optics:setup_aerosol_optics',1,hook_handle)
88
89	end subroutine setup_aerosol_optics
90
91
92	!---------------------------------------------------------------------
93	! Read file containing high spectral resolution optical properties
94	! and average to the spectral intervals of the current gas-optics
95	! scheme
96	subroutine setup_general_aerosol_optics(config)
97
98	use parkind1, only : jprb
99	use yomhook, only : lhook, dr_hook, jphook
100	#ifdef EASY_NETCDF_READ_MPI
101	use easy_netcdf_read_mpi, only : netcdf_file
102	#else
103	use easy_netcdf, only : netcdf_file
104	#endif
105	use radiation_config, only : config_type
106	use radiation_aerosol_optics_data, only : aerosol_optics_type
107	use radiation_spectral_definition, only : SolarReferenceTemperature, &
108	& TerrestrialReferenceTemperature
109	use radiation_io, only : nulout
110
111	type(config_type), intent(inout), target :: config
112
113	! The NetCDF file containing the aerosol optics data
114	type(netcdf_file) :: file
115
116	! Wavenumber points in NetCDF file
117	real(jprb), allocatable :: wavenumber(:) ! cm-1
118
119	! Hydrophilic aerosol properties
120	real(jprb), allocatable :: mass_ext_philic(:,:,:) ! Mass-ext coefficient (m2 kg-1)
121	real(jprb), allocatable :: ssa_philic(:,:,:) ! Single-scattering albedo
122	real(jprb), allocatable :: g_philic(:,:,:) ! Asymmetry factor
123	real(jprb), allocatable :: lidar_ratio_philic(:,:,:) ! Lidar ratio (sr)
124
125	! Hydrophobic aerosol properties
126	real(jprb), allocatable :: mass_ext_phobic(:,:) ! Mass-ext coefficient (m2 kg-1)
127	real(jprb), allocatable :: ssa_phobic(:,:) ! Single-scattering albedo
128	real(jprb), allocatable :: g_phobic(:,:) ! Asymmetry factor
129	real(jprb), allocatable :: lidar_ratio_phobic(:,:) ! Lidar ratio (sr)
130
131	! Mapping matrix between optical properties at the wavenumbers in
132	! the file, and spectral intervals used by the gas-optics scheme
133	real(jprb), allocatable :: mapping(:,:)
134
135	! Target monochromatic wavenumber for interpolation (cm-1)
136	real(jprb) :: wavenumber_target
137
138	! Number of spectral points describing aerosol properties in the
139	! shortwave and longwave
140	integer :: nspecsw, nspeclw
141
142	! Number of monochromatic wavelengths required
143	integer :: nmono
144
145	integer :: n_type_philic, n_type_phobic, nrh, nwn
146	integer :: jtype, jwl, iwn
147
148	! Weight of first point in interpolation
149	real(jprb) :: weight1
150
151	real(jphook) :: hook_handle
152
153	if (lhook) call dr_hook('radiation_aerosol_optics:setup_general_aerosol_optics',0,hook_handle)
154
155	associate(ao => config%aerosol_optics)
156
157	call file%open(trim(config%aerosol_optics_file_name), iverbose=config%iverbosesetup)
158
159	if (.not. file%exists('wavenumber')) then
160	! Assume we have an old-style aerosol optics file with optical
161	! properties provided per pre-defined band
162	call file%close()
163	if (config%iverbosesetup >= 2) then
164	write(nulout,'(a)') 'Legacy aerosol optics file: mapping between bands'
165	end if
166	call setup_general_aerosol_optics_legacy(config, trim(config%aerosol_optics_file_name))
167	if (lhook) call dr_hook('radiation_aerosol_optics:setup_general_aerosol_optics',1,hook_handle)
168	return
169	end if
170
171	if (file%exists('mass_ext_hydrophilic')) then
172	ao%use_hydrophilic = .true.
173	else
174	ao%use_hydrophilic = .false.
175	end if
176
177	call file%get('wavenumber', wavenumber)
178	nwn = size(wavenumber)
179
180	! Read the raw scattering data
181	call file%get('mass_ext_hydrophobic', mass_ext_phobic)
182	call file%get('ssa_hydrophobic', ssa_phobic)
183	call file%get('asymmetry_hydrophobic', g_phobic)
184	call file%get('lidar_ratio_hydrophobic', lidar_ratio_phobic)
185
186	call file%get_global_attribute('description_hydrophobic', &
187	& ao%description_phobic_str)
188
189	if (ao%use_hydrophilic) then
190	call file%get('mass_ext_hydrophilic', mass_ext_philic)
191	call file%get('ssa_hydrophilic', ssa_philic)
192	call file%get('asymmetry_hydrophilic', g_philic)
193	call file%get('lidar_ratio_hydrophilic', lidar_ratio_philic)
194
195	call file%get('relative_humidity1', ao%rh_lower)
196
197	call file%get_global_attribute('description_hydrophilic', &
198	& ao%description_philic_str)
199	end if
200
201	! Close aerosol scattering file
202	call file%close()
203
204	n_type_phobic = size(mass_ext_phobic, 2)
205	if (ao%use_hydrophilic) then
206	n_type_philic = size(mass_ext_philic, 3)
207	nrh = size(ao%rh_lower)
208	else
209	n_type_philic = 0
210	nrh = 0
211	end if
212
213	if (config%do_cloud_aerosol_per_sw_g_point) then
214	nspecsw = config%gas_optics_sw%spectral_def%ng
215	else
216	nspecsw = config%gas_optics_sw%spectral_def%nband
217	end if
218
219	if (config%do_cloud_aerosol_per_lw_g_point) then
220	nspeclw = config%gas_optics_lw%spectral_def%ng
221	else
222	nspeclw = config%gas_optics_lw%spectral_def%nband
223	end if
224
225	if (allocated(ao%wavelength_mono)) then
226	! Monochromatic wavelengths also required
227	nmono = size(ao%wavelength_mono)
228	else
229	nmono = 0
230	end if
231
232	call ao%allocate(n_type_phobic, n_type_philic, nrh, nspeclw, nspecsw, nmono)
233
234	if (config%do_sw) then
235	call config%gas_optics_sw%spectral_def%calc_mapping(wavenumber, mapping, &
236	& use_bands=(.not. config%do_cloud_aerosol_per_sw_g_point))
237
238	ao%mass_ext_sw_phobic = matmul(mapping, mass_ext_phobic)
239	ao%ssa_sw_phobic = matmul(mapping, mass_ext_phobic*ssa_phobic) &
240	& / ao%mass_ext_sw_phobic
241	ao%g_sw_phobic = matmul(mapping, mass_ext_phobicssa_phobicg_phobic) &
242	& / (ao%mass_ext_sw_phobic*ao%ssa_sw_phobic)
243
244	if (ao%use_hydrophilic) then
245	do jtype = 1,n_type_philic
246	ao%mass_ext_sw_philic(:,:,jtype) = matmul(mapping, mass_ext_philic(:,:,jtype))
247	ao%ssa_sw_philic(:,:,jtype) = matmul(mapping, mass_ext_philic(:,:,jtype) &
248	& *ssa_philic(:,:,jtype)) &
249	& / ao%mass_ext_sw_philic(:,:,jtype)
250	ao%g_sw_philic(:,:,jtype) = matmul(mapping, mass_ext_philic(:,:,jtype) &
251	& ssa_philic(:,:,jtype)g_philic(:,:,jtype)) &
252	& / (ao%mass_ext_sw_philic(:,:,jtype)*ao%ssa_sw_philic(:,:,jtype))
253	end do
254	end if
255	end if
256
257	if (config%do_lw) then
258	call config%gas_optics_lw%spectral_def%calc_mapping(wavenumber, mapping, &
259	& use_bands=(.not. config%do_cloud_aerosol_per_lw_g_point))
260
261	ao%mass_ext_lw_phobic = matmul(mapping, mass_ext_phobic)
262	ao%ssa_lw_phobic = matmul(mapping, mass_ext_phobic*ssa_phobic) &
263	& / ao%mass_ext_lw_phobic
264	ao%g_lw_phobic = matmul(mapping, mass_ext_phobicssa_phobicg_phobic) &
265	& / (ao%mass_ext_lw_phobic*ao%ssa_lw_phobic)
266
267	if (ao%use_hydrophilic) then
268	do jtype = 1,n_type_philic
269	ao%mass_ext_lw_philic(:,:,jtype) = matmul(mapping, mass_ext_philic(:,:,jtype))
270	ao%ssa_lw_philic(:,:,jtype) = matmul(mapping, mass_ext_philic(:,:,jtype) &
271	& *ssa_philic(:,:,jtype)) &
272	& / ao%mass_ext_lw_philic(:,:,jtype)
273	ao%g_lw_philic(:,:,jtype) = matmul(mapping, mass_ext_philic(:,:,jtype) &
274	& ssa_philic(:,:,jtype)g_philic(:,:,jtype)) &
275	& / (ao%mass_ext_lw_philic(:,:,jtype)*ao%ssa_lw_philic(:,:,jtype))
276	end do
277	end if
278	end if
279
280	if (allocated(ao%wavelength_mono)) then
281	! Monochromatic wavelengths also required
282	do jwl = 1,nmono
283	! Wavelength (m) to wavenumber (cm-1)
284	wavenumber_target = 0.01_jprb / ao%wavelength_mono(jwl)
285	! Find index to first interpolation point, and its weight
286	if (wavenumber_target <= wavenumber(1)) then
287	weight1 = 1.0_jprb
288	iwn = 1
289	else if (wavenumber_target >= wavenumber(nwn)) then
290	iwn = nwn-1
291	weight1 = 0.0_jprb
292	else
293	iwn = 1
294	do while (wavenumber(iwn+1) < wavenumber_target .and. iwn < nwn-1)
295	iwn = iwn + 1
296	end do
297	weight1 = (wavenumber(iwn+1)-wavenumber_target) &
298	& / (wavenumber(iwn+1)-wavenumber(iwn))
299	end if
300	! Linear interpolation
301	ao%mass_ext_mono_phobic(jwl,:) = weight1 * mass_ext_phobic(iwn,:) &
302	& + (1.0_jprb - weight1)* mass_ext_phobic(iwn+1,:)
303	ao%ssa_mono_phobic(jwl,:) = weight1 * ssa_phobic(iwn,:) &
304	& + (1.0_jprb - weight1)* ssa_phobic(iwn+1,:)
305	ao%g_mono_phobic(jwl,:) = weight1 * g_phobic(iwn,:) &
306	& + (1.0_jprb - weight1)* g_phobic(iwn+1,:)
307	ao%lidar_ratio_mono_phobic(jwl,:) = weight1 * lidar_ratio_phobic(iwn,:) &
308	& + (1.0_jprb - weight1)* lidar_ratio_phobic(iwn+1,:)
309	if (ao%use_hydrophilic) then
310	ao%mass_ext_mono_philic(jwl,:,:) = weight1 * mass_ext_philic(iwn,:,:) &
311	& + (1.0_jprb - weight1)* mass_ext_philic(iwn+1,:,:)
312	ao%ssa_mono_philic(jwl,:,:) = weight1 * ssa_philic(iwn,:,:) &
313	& + (1.0_jprb - weight1)* ssa_philic(iwn+1,:,:)
314	ao%g_mono_philic(jwl,:,:) = weight1 * g_philic(iwn,:,:) &
315	& + (1.0_jprb - weight1)* g_philic(iwn+1,:,:)
316	ao%lidar_ratio_mono_philic(jwl,:,:) = weight1 * lidar_ratio_philic(iwn,:,:) &
317	& + (1.0_jprb - weight1)* lidar_ratio_philic(iwn+1,:,:)
318	end if
319	end do
320	end if
321
322	! Deallocate memory local to this routine
323	deallocate(mass_ext_phobic)
324	deallocate(ssa_phobic)
325	deallocate(g_phobic)
326	deallocate(lidar_ratio_phobic)
327	if (ao%use_hydrophilic) then
328	deallocate(mass_ext_philic)
329	deallocate(ssa_philic)
330	deallocate(g_philic)
331	deallocate(lidar_ratio_philic)
332	end if
333
334	end associate
335
336	if (lhook) call dr_hook('radiation_aerosol_optics:setup_general_aerosol_optics',1,hook_handle)
337
338	end subroutine setup_general_aerosol_optics
339
340
341	!---------------------------------------------------------------------
342	! Read file containing legacy-style band-wise aerosol optical
343	! properties and average to the spectral intervals of the current
344	! gas-optics scheme
345	subroutine setup_general_aerosol_optics_legacy(config, file_name)
346
347	use parkind1, only : jprb
348	use yomhook, only : lhook, dr_hook, jphook
349	#ifdef EASY_NETCDF_READ_MPI
350	use easy_netcdf_read_mpi, only : netcdf_file
351	#else
352	use easy_netcdf, only : netcdf_file
353	#endif
354	use radiation_config, only : config_type
355	use radiation_aerosol_optics_data, only : aerosol_optics_type
356	use radiation_spectral_definition, only : SolarReferenceTemperature, &
357	& TerrestrialReferenceTemperature
358
359	type(config_type), intent(inout), target :: config
360
361	! The NetCDF file containing the aerosol optics data
362	character(len=*), intent(in) :: file_name
363
364	! Mapping matrix between optical properties at the wavenumbers in
365	! the file, and spectral intervals used by the gas-optics scheme
366	real(jprb), allocatable :: mapping(:,:), mapping_transp(:,:)
367
368	! Pointer to the aerosol optics coefficients for brevity of access
369	type(aerosol_optics_type), pointer :: ao
370
371	! Local copy of aerosol optical properties in the spectral
372	! intervals of the file, which is deallocated when it goes out of
373	! scope
374	type(aerosol_optics_type) :: ao_legacy
375
376	integer :: jtype
377
378	real(jphook) :: hook_handle
379
380	if (lhook) call dr_hook('radiation_aerosol_optics:setup_general_aerosol_optics_legacy',0,hook_handle)
381	ao => config%aerosol_optics
382
383	! Load file into a local structure
384	call ao_legacy%setup(file_name, iverbose=config%iverbosesetup)
385
386	! Copy over scalars and coordinate variables
387	call ao%allocate(ao_legacy%n_type_phobic, ao_legacy%n_type_philic, ao_legacy%nrh, &
388	& config%n_bands_lw, config%n_bands_sw, ao_legacy%n_mono_wl)
389	ao%description_phobic_str = ao_legacy%description_phobic_str
390	if (ao_legacy%use_hydrophilic) then
391	ao%description_philic_str = ao_legacy%description_philic_str
392	ao%rh_lower = ao_legacy%rh_lower
393	end if
394
395	! use_hydrophilic = ao_legacy%use_hydrophilic
396	! ao%iclass = ao_legacy%iclass
397	! ao%itype = ao_legacy%itype
398	! ao%ntype = ao_legacy%ntype
399	! ao%n_type_phobic = ao_legacy%n_type_phobic
400	! ao%n_type_philic = ao_legacy%n_type_philic
401	! ao%n_mono_wl = ao_legacy%n_mono_wl
402	! ao%use_monochromatic = ao_legacy%use_monochromatic
403
404	if (config%do_sw) then
405	call config%gas_optics_sw%spectral_def%calc_mapping_from_wavenumber_bands( &
406	& ao_legacy%wavenumber1_sw, ao_legacy%wavenumber2_sw, mapping_transp, &
407	& use_bands=(.not. config%do_cloud_aerosol_per_sw_g_point))
408	if (allocated(mapping)) then
409	deallocate(mapping)
410	end if
411	allocate(mapping(config%n_bands_sw,ao_legacy%n_bands_sw))
412	mapping = transpose(mapping_transp)
413	ao%mass_ext_sw_phobic = matmul(mapping, ao_legacy%mass_ext_sw_phobic)
414	ao%ssa_sw_phobic = matmul(mapping, ao_legacy%mass_ext_sw_phobic*ao_legacy%ssa_sw_phobic) &
415	& / ao%mass_ext_sw_phobic
416	ao%g_sw_phobic = matmul(mapping, ao_legacy%mass_ext_sw_phobic*ao_legacy%ssa_sw_phobic &
417	& *ao_legacy%g_sw_phobic) &
418	& / (ao%mass_ext_sw_phobic*ao%ssa_sw_phobic)
419
420	if (ao%use_hydrophilic) then
421	do jtype = 1,ao%n_type_philic
422	ao%mass_ext_sw_philic(:,:,jtype) = matmul(mapping, ao_legacy%mass_ext_sw_philic(:,:,jtype))
423	ao%ssa_sw_philic(:,:,jtype) = matmul(mapping, ao_legacy%mass_ext_sw_philic(:,:,jtype) &
424	& *ao_legacy%ssa_sw_philic(:,:,jtype)) &
425	& / ao%mass_ext_sw_philic(:,:,jtype)
426	ao%g_sw_philic(:,:,jtype) = matmul(mapping, ao_legacy%mass_ext_sw_philic(:,:,jtype) &
427	& ao_legacy%ssa_sw_philic(:,:,jtype)ao_legacy%g_sw_philic(:,:,jtype)) &
428	& / (ao%mass_ext_sw_philic(:,:,jtype)*ao%ssa_sw_philic(:,:,jtype))
429	end do
430	end if
431	end if
432
433	if (config%do_lw) then
434	if (allocated(mapping_transp)) then
435	deallocate(mapping_transp)
436	end if
437	call config%gas_optics_lw%spectral_def%calc_mapping_from_wavenumber_bands( &
438	& ao_legacy%wavenumber1_lw, ao_legacy%wavenumber2_lw, mapping_transp, &
439	& use_bands=(.not. config%do_cloud_aerosol_per_lw_g_point))
440	if (allocated(mapping)) then
441	deallocate(mapping)
442	end if
443	allocate(mapping(config%n_bands_lw,ao_legacy%n_bands_lw))
444	mapping = transpose(mapping_transp)
445	ao%mass_ext_lw_phobic = matmul(mapping, ao_legacy%mass_ext_lw_phobic)
446	ao%ssa_lw_phobic = matmul(mapping, ao_legacy%mass_ext_lw_phobic*ao_legacy%ssa_lw_phobic) &
447	& / ao%mass_ext_lw_phobic
448	ao%g_lw_phobic = matmul(mapping, ao_legacy%mass_ext_lw_phobic*ao_legacy%ssa_lw_phobic &
449	& *ao_legacy%g_lw_phobic) &
450	& / (ao%mass_ext_lw_phobic*ao%ssa_lw_phobic)
451
452	if (ao%use_hydrophilic) then
453	do jtype = 1,ao%n_type_philic
454	ao%mass_ext_lw_philic(:,:,jtype) = matmul(mapping, ao_legacy%mass_ext_lw_philic(:,:,jtype))
455	ao%ssa_lw_philic(:,:,jtype) = matmul(mapping, ao_legacy%mass_ext_lw_philic(:,:,jtype) &
456	& *ao_legacy%ssa_lw_philic(:,:,jtype)) &
457	& / ao%mass_ext_lw_philic(:,:,jtype)
458	ao%g_lw_philic(:,:,jtype) = matmul(mapping, ao_legacy%mass_ext_lw_philic(:,:,jtype) &
459	& ao_legacy%ssa_lw_philic(:,:,jtype)ao_legacy%g_lw_philic(:,:,jtype)) &
460	& / (ao%mass_ext_lw_philic(:,:,jtype)*ao%ssa_lw_philic(:,:,jtype))
461	end do
462	end if
463	end if
464
465	if (allocated(ao_legacy%wavelength_mono)) then
466	ao%wavelength_mono = ao_legacy%wavelength_mono
467	ao%mass_ext_mono_phobic = ao_legacy%mass_ext_mono_phobic
468	ao%ssa_mono_phobic = ao_legacy%ssa_mono_phobic
469	ao%g_mono_phobic = ao_legacy%g_mono_phobic
470	ao%lidar_ratio_mono_phobic = ao_legacy%lidar_ratio_mono_phobic
471	if (ao%use_hydrophilic) then
472	ao%mass_ext_mono_philic = ao_legacy%mass_ext_mono_philic
473	ao%ssa_mono_philic = ao_legacy%ssa_mono_philic
474	ao%g_mono_philic = ao_legacy%g_mono_philic
475	ao%lidar_ratio_mono_philic = ao_legacy%lidar_ratio_mono_philic
476	end if
477	end if
478
479	if (lhook) call dr_hook('radiation_aerosol_optics:setup_general_aerosol_optics_legacy',1,hook_handle)
480
481	end subroutine setup_general_aerosol_optics_legacy
482
483
484	!---------------------------------------------------------------------
485	! Compute aerosol optical properties and add to existing gas optical
486	! depth and scattering properties
487	subroutine add_aerosol_optics(nlev,istartcol,iendcol, &
488	& config, thermodynamics, gas, aerosol, &
489	& od_lw, ssa_lw, g_lw, od_sw, ssa_sw, g_sw)
490
491	use parkind1, only : jprb
492	use radiation_io, only : nulout, nulerr, radiation_abort
493	use yomhook, only : lhook, dr_hook, jphook
494	use radiation_config, only : config_type
495	use radiation_thermodynamics, only : thermodynamics_type
496	use radiation_gas, only : gas_type, IH2O, IMassMixingRatio
497	use radiation_aerosol, only : aerosol_type
498	use radiation_constants, only : AccelDueToGravity
499	use radiation_aerosol_optics_data, only : aerosol_optics_type, &
500	& IAerosolClassUndefined, IAerosolClassIgnored, &
501	& IAerosolClassHydrophobic, IAerosolClassHydrophilic
502
503	real(jprb), parameter :: OneOverAccelDueToGravity = 1.0_jprb / AccelDueToGravity
504
505	integer, intent(in) :: nlev ! number of model levels
506	integer, intent(in) :: istartcol, iendcol ! range of columns to process
507	type(config_type), intent(in), target :: config
508	type(thermodynamics_type),intent(in) :: thermodynamics
509	type(gas_type), intent(in) :: gas
510	type(aerosol_type), intent(in) :: aerosol
511	! Optical depth, single scattering albedo and asymmetry factor of
512	! the atmosphere (gases on input, gases and aerosols on output)
513	! for each g point. Note that longwave ssa and asymmetry and
514	! shortwave asymmetry are all zero for gases, so are not yet
515	! defined on input and are therefore intent(out).
516	real(jprb), dimension(config%n_g_lw,nlev,istartcol:iendcol), &
517	& intent(inout) :: od_lw
518	real(jprb), dimension(config%n_g_lw_if_scattering,nlev,istartcol:iendcol), &
519	& intent(out) :: ssa_lw, g_lw
520	real(jprb), dimension(config%n_g_sw,nlev,istartcol:iendcol), &
521	& intent(inout) :: od_sw, ssa_sw
522	real(jprb), dimension(config%n_g_sw,nlev,istartcol:iendcol), &
523	& intent(out) :: g_sw
524
525	! Extinction optical depth, scattering optical depth and
526	! asymmetry-times-scattering-optical-depth for all the aerosols in
527	! a column for each spectral band of the shortwave and longwave
528	! spectrum
529	real(jprb), dimension(config%n_bands_sw,nlev) &
530	& :: od_sw_aerosol, scat_sw_aerosol, scat_g_sw_aerosol
531	real(jprb), dimension(config%n_bands_lw,nlev) &
532	& :: od_lw_aerosol
533	real(jprb), dimension(config%n_bands_lw_if_scattering,nlev) &
534	& :: scat_lw_aerosol, scat_g_lw_aerosol
535
536	real(jprb) :: local_od_sw, local_od_lw
537
538	real(jprb) :: h2o_mmr(istartcol:iendcol,nlev)
539
540	real(jprb) :: rh ! Relative humidity with respect to liquid water
541
542	! Factor (kg m-2) to convert mixing ratio (kg kg-1) to mass in
543	! path (kg m-2)
544	real(jprb) :: factor(nlev)
545
546	! Temporary extinction and scattering optical depths of aerosol
547	! plus gas
548	real(jprb) :: local_od, local_scat
549
550	! Aerosol mixing ratio as a scalar
551	real(jprb) :: mixing_ratio
552
553	! Loop indices for column, level, g point, band and aerosol type
554	integer :: jcol, jlev, jg, jtype, jband
555
556	! Range of levels over which aerosols are present
557	integer :: istartlev, iendlev
558
559	! Indices to spectral band and relative humidity look-up table
560	integer :: iband, irh, irhs(nlev)
561
562	! Short cut for ao%itype(jtype)
563	integer :: itype
564
565	! Pointer to the aerosol optics coefficients for brevity of access
566	type(aerosol_optics_type), pointer :: ao
567
568	real(jphook) :: hook_handle
569
570	if (lhook) call dr_hook('radiation_aerosol_optics:add_aerosol_optics',0,hook_handle)
571
572	if (aerosol%is_direct) then
573	! Aerosol optical properties have been provided in each band
574	! directly by the user
575	call add_aerosol_optics_direct(nlev,istartcol,iendcol, &
576	& config, aerosol, &
577	& od_lw, ssa_lw, g_lw, od_sw, ssa_sw, g_sw)
578	else
579	! Aerosol mixing ratios have been provided
580
581	do jtype = 1,config%n_aerosol_types
582	if (config%aerosol_optics%iclass(jtype) == IAerosolClassUndefined) then
583	write(nulerr,'(a)') '*** Error: not all aerosol types are defined'
584	call radiation_abort()
585	end if
586	end do
587
588	if (config%iverbose >= 2) then
589	write(nulout,'(a)') 'Computing aerosol absorption/scattering properties'
590	end if
591
592	ao => config%aerosol_optics
593
594	istartlev = lbound(aerosol%mixing_ratio,2)
595	iendlev = ubound(aerosol%mixing_ratio,2)
596
597	if (ubound(aerosol%mixing_ratio,3) /= config%n_aerosol_types) then
598	write(nulerr,'(a,i0,a,i0)') '*** Error: aerosol%mixing_ratio contains ', &
599	& ubound(aerosol%mixing_ratio,3), ' aerosol types, expected ', &
600	& config%n_aerosol_types
601	call radiation_abort()
602	end if
603
604	! Set variables to zero that may not have been previously
605	g_sw(:,:,istartcol:iendcol) = 0.0_jprb
606	if (config%do_lw_aerosol_scattering) then
607	ssa_lw(:,:,istartcol:iendcol) = 0.0_jprb
608	g_lw(:,:,istartcol:iendcol) = 0.0_jprb
609	end if
610
611	call gas%get(IH2O, IMassMixingRatio, h2o_mmr, istartcol=istartcol)
612
613	! Loop over column
614	do jcol = istartcol,iendcol
615
616	! Reset temporary arrays
617	od_sw_aerosol = 0.0_jprb
618	scat_sw_aerosol = 0.0_jprb
619	scat_g_sw_aerosol = 0.0_jprb
620	od_lw_aerosol = 0.0_jprb
621	scat_lw_aerosol = 0.0_jprb
622	scat_g_lw_aerosol = 0.0_jprb
623
624	do jlev = istartlev,iendlev
625	! Compute relative humidity with respect to liquid
626	! saturation and the index to the relative-humidity index of
627	! hydrophilic-aerosol data
628	rh = h2o_mmr(jcol,jlev) / thermodynamics%h2o_sat_liq(jcol,jlev)
629	irhs(jlev) = ao%calc_rh_index(rh)
630
631	factor(jlev) = ( thermodynamics%pressure_hl(jcol,jlev+1) &
632	& -thermodynamics%pressure_hl(jcol,jlev ) ) &
633	& * OneOverAccelDueToGravity
634	end do
635
636	do jtype = 1,config%n_aerosol_types
637	itype = ao%itype(jtype)
638
639	! Add the optical depth, scattering optical depth and
640	! scattering optical depth-weighted asymmetry factor for
641	! this aerosol type to the total for all aerosols. Note
642	! that the following expressions are array-wise, the
643	! dimension being spectral band.
644	if (ao%iclass(jtype) == IAerosolClassHydrophobic) then
645	do jlev = istartlev,iendlev
646	mixing_ratio = aerosol%mixing_ratio(jcol,jlev,jtype)
647	do jband = 1,config%n_bands_sw
648	local_od_sw = factor(jlev) * mixing_ratio &
649	& * ao%mass_ext_sw_phobic(jband,itype)
650	od_sw_aerosol(jband,jlev) = od_sw_aerosol(jband,jlev) + local_od_sw
651	scat_sw_aerosol(jband,jlev) = scat_sw_aerosol(jband,jlev) &
652	& + local_od_sw * ao%ssa_sw_phobic(jband,itype)
653	scat_g_sw_aerosol(jband,jlev) = scat_g_sw_aerosol(jband,jlev) &
654	& + local_od_sw * ao%ssa_sw_phobic(jband,itype) &
655	& * ao%g_sw_phobic(jband,itype)
656	end do
657	if (config%do_lw_aerosol_scattering) then
658	do jband = 1,config%n_bands_lw
659	local_od_lw = factor(jlev) * mixing_ratio &
660	& * ao%mass_ext_lw_phobic(jband,itype)
661	od_lw_aerosol(jband,jlev) = od_lw_aerosol(jband,jlev) + local_od_lw
662	scat_lw_aerosol(jband,jlev) = scat_lw_aerosol(jband,jlev) &
663	& + local_od_lw * ao%ssa_lw_phobic(jband,itype)
664	scat_g_lw_aerosol(jband,jlev) = scat_g_lw_aerosol(jband,jlev) &
665	& + local_od_lw * ao%ssa_lw_phobic(jband,itype) &
666	& * ao%g_lw_phobic(jband,itype)
667	end do
668	else
669	! If aerosol longwave scattering is not included then we
670	! weight the optical depth by the single scattering
671	! co-albedo
672	do jband = 1,config%n_bands_lw
673	od_lw_aerosol(jband,jlev) = od_lw_aerosol(jband,jlev) &
674	& + factor(jlev) * mixing_ratio &
675	& * ao%mass_ext_lw_phobic(jband,itype) &
676	& * (1.0_jprb - ao%ssa_lw_phobic(jband,itype))
677	end do
678	end if
679	end do
680
681	else if (ao%iclass(jtype) == IAerosolClassHydrophilic) then
682	! Hydrophilic aerosols require the look-up tables to
683	! be indexed with irh
684	do jlev = istartlev,iendlev
685	mixing_ratio = aerosol%mixing_ratio(jcol,jlev,jtype)
686	irh = irhs(jlev)
687	do jband = 1,config%n_bands_sw
688	local_od_sw = factor(jlev) * mixing_ratio &
689	& * ao%mass_ext_sw_philic(jband,irh,itype)
690	od_sw_aerosol(jband,jlev) = od_sw_aerosol(jband,jlev) + local_od_sw
691	scat_sw_aerosol(jband,jlev) = scat_sw_aerosol(jband,jlev) &
692	& + local_od_sw * ao%ssa_sw_philic(jband,irh,itype)
693	scat_g_sw_aerosol(jband,jlev) = scat_g_sw_aerosol(jband,jlev) &
694	& + local_od_sw * ao%ssa_sw_philic(jband,irh,itype) &
695	& * ao%g_sw_philic(jband,irh,itype)
696	end do
697	if (config%do_lw_aerosol_scattering) then
698	do jband = 1,config%n_bands_lw
699	local_od_lw = factor(jlev) * mixing_ratio &
700	& * ao%mass_ext_lw_philic(jband,irh,itype)
701	od_lw_aerosol(jband,jlev) = od_lw_aerosol(jband,jlev) + local_od_lw
702	scat_lw_aerosol(jband,jlev) = scat_lw_aerosol(jband,jlev) &
703	& + local_od_lw * ao%ssa_lw_philic(jband,irh,itype)
704	scat_g_lw_aerosol(jband,jlev) = scat_g_lw_aerosol(jband,jlev) &
705	& + local_od_lw * ao%ssa_lw_philic(jband,irh,itype) &
706	& * ao%g_lw_philic(jband,irh,itype)
707	end do
708	else
709	! If aerosol longwave scattering is not included then we
710	! weight the optical depth by the single scattering
711	! co-albedo
712	do jband = 1,config%n_bands_lw
713	od_lw_aerosol(jband,jlev) = od_lw_aerosol(jband,jlev) &
714	& + factor(jlev) * mixing_ratio &
715	& * ao%mass_ext_lw_philic(jband,irh,itype) &
716	& * (1.0_jprb - ao%ssa_lw_philic(jband,irh,itype))
717	end do
718	end if
719	end do
720
721	! Implicitly, if ao%iclass(jtype) == IAerosolClassNone, then
722	! no aerosol scattering properties are added
723	end if
724
725	end do ! Loop over aerosol type
726
727	if (.not. config%do_sw_delta_scaling_with_gases) then
728	! Delta-Eddington scaling on aerosol only. Note that if
729	! do_sw_delta_scaling_with_gases==.true. then the delta
730	! scaling is done to the cloud-aerosol-gas mixture inside
731	! the solver
732	call delta_eddington_extensive_vec(config%n_bands_sw*nlev, od_sw_aerosol, &
733	& scat_sw_aerosol, scat_g_sw_aerosol)
734	end if
735
736	! Combine aerosol shortwave scattering properties with gas
737	! properties (noting that any gas scattering will have an
738	! asymmetry factor of zero)
739	if (config%do_cloud_aerosol_per_sw_g_point) then
740
741	! We can assume the band and g-point indices are the same
742	do jlev = 1,nlev
743	do jg = 1,config%n_g_sw
744	local_scat = ssa_sw(jg,jlev,jcol)*od_sw(jg,jlev,jcol) + scat_sw_aerosol(jg,jlev)
745	od_sw(jg,jlev,jcol) = od_sw(jg,jlev,jcol) + od_sw_aerosol(jg,jlev)
746	g_sw(jg,jlev,jcol) = scat_g_sw_aerosol(jg,jlev) / max(local_scat, 1.0e-24_jprb)
747	ssa_sw(jg,jlev,jcol) = min(local_scat / max(od_sw(jg,jlev,jcol), 1.0e-24_jprb), 1.0_jprb)
748	end do
749	end do
750
751	else
752
753	do jlev = 1,nlev
754	do jg = 1,config%n_g_sw
755	! Need to map between bands and g-points
756	iband = config%i_band_from_reordered_g_sw(jg)
757	local_od = od_sw(jg,jlev,jcol) + od_sw_aerosol(iband,jlev)
758	if (local_od > 0.0_jprb .and. od_sw_aerosol(iband,jlev) > 0.0_jprb) then
759	local_scat = ssa_sw(jg,jlev,jcol) * od_sw(jg,jlev,jcol) &
760	& + scat_sw_aerosol(iband,jlev)
761	! Note that asymmetry_sw of gases is zero so the following
762	! simply weights the aerosol asymmetry by the scattering
763	! optical depth
764	if (local_scat > 0.0_jprb) then
765	g_sw(jg,jlev,jcol) = scat_g_sw_aerosol(iband,jlev) / local_scat
766	end if
767	ssa_sw(jg,jlev,jcol) = local_scat / local_od
768	od_sw (jg,jlev,jcol) = local_od
769	end if
770	end do
771	end do
772
773	end if
774
775	! Combine aerosol longwave scattering properties with gas
776	! properties, noting that in the longwave, gases do not
777	! scatter at all
778	if (config%do_lw_aerosol_scattering) then
779
780	call delta_eddington_extensive_vec(config%n_bands_lw*nlev, od_lw_aerosol, &
781	& scat_lw_aerosol, scat_g_lw_aerosol)
782
783	do jlev = istartlev,iendlev
784	do jg = 1,config%n_g_lw
785	iband = config%i_band_from_reordered_g_lw(jg)
786	local_od = od_lw(jg,jlev,jcol) + od_lw_aerosol(iband,jlev)
787	if (local_od > 0.0_jprb .and. od_lw_aerosol(iband,jlev) > 0.0_jprb) then
788	! All scattering is due to aerosols, therefore the
789	! asymmetry factor is equal to the value for aerosols
790	if (scat_lw_aerosol(iband,jlev) > 0.0_jprb) then
791	g_lw(jg,jlev,jcol) = scat_g_lw_aerosol(iband,jlev) &
792	& / scat_lw_aerosol(iband,jlev)
793	end if
794	ssa_lw(jg,jlev,jcol) = scat_lw_aerosol(iband,jlev) / local_od
795	od_lw (jg,jlev,jcol) = local_od
796	end if
797	end do
798	end do
799
800	else
801
802	if (config%do_cloud_aerosol_per_lw_g_point) then
803	! We can assume band and g-point indices are the same
804	do jlev = istartlev,iendlev
805	do jg = 1,config%n_g_lw
806	od_lw(jg,jlev,jcol) = od_lw(jg,jlev,jcol) + od_lw_aerosol(jg,jlev)
807	end do
808	end do
809	else
810	do jlev = istartlev,iendlev
811	do jg = 1,config%n_g_lw
812	od_lw(jg,jlev,jcol) = od_lw(jg,jlev,jcol) &
813	& + od_lw_aerosol(config%i_band_from_reordered_g_lw(jg),jlev)
814	end do
815	end do
816	end if
817
818	end if
819
820	end do ! Loop over column
821
822	end if
823
824	if (lhook) call dr_hook('radiation_aerosol_optics:add_aerosol_optics',1,hook_handle)
825
826	end subroutine add_aerosol_optics
827
828
829	!---------------------------------------------------------------------
830	! Add precomputed optical properties to gas optical depth and
831	! scattering properties
832	subroutine add_aerosol_optics_direct(nlev,istartcol,iendcol, &
833	& config, aerosol, &
834	& od_lw, ssa_lw, g_lw, od_sw, ssa_sw, g_sw)
835
836	use parkind1, only : jprb
837	use radiation_io, only : nulerr, radiation_abort
838	use yomhook, only : lhook, dr_hook, jphook
839	use radiation_config, only : config_type
840	use radiation_aerosol, only : aerosol_type
841
842	integer, intent(in) :: nlev ! number of model levels
843	integer, intent(in) :: istartcol, iendcol ! range of columns to process
844	type(config_type), intent(in), target :: config
845	type(aerosol_type), intent(in) :: aerosol
846	! Optical depth, single scattering albedo and asymmetry factor of
847	! the atmosphere (gases on input, gases and aerosols on output)
848	! for each g point. Note that longwave ssa and asymmetry and
849	! shortwave asymmetry are all zero for gases, so are not yet
850	! defined on input and are therefore intent(out).
851	real(jprb), dimension(config%n_g_lw,nlev,istartcol:iendcol), &
852	& intent(inout) :: od_lw
853	real(jprb), dimension(config%n_g_lw_if_scattering,nlev,istartcol:iendcol), &
854	& intent(out) :: ssa_lw, g_lw
855	real(jprb), dimension(config%n_g_sw,nlev,istartcol:iendcol), &
856	& intent(inout) :: od_sw, ssa_sw
857	real(jprb), dimension(config%n_g_sw,nlev,istartcol:iendcol), &
858	& intent(out) :: g_sw
859
860	! Temporary extinction and scattering optical depths of aerosol
861	! plus gas
862	real(jprb) :: local_od, local_scat
863
864	! Extinction optical depth, scattering optical depth and
865	! asymmetry-times-scattering-optical-depth for all the aerosols at
866	! a point in space for each spectral band of the shortwave and
867	! longwave spectrum
868	real(jprb), dimension(config%n_bands_sw,nlev) &
869	& :: od_sw_aerosol, scat_sw_aerosol, scat_g_sw_aerosol
870	real(jprb), dimension(config%n_bands_lw,nlev) :: od_lw_aerosol
871	real(jprb), dimension(config%n_bands_lw_if_scattering,nlev) &
872	& :: scat_lw_aerosol, scat_g_lw_aerosol
873
874	! Loop indices for column, level, g point and band
875	integer :: jcol, jlev, jg, jb
876
877	! Range of levels over which aerosols are present
878	integer :: istartlev, iendlev
879
880	! Indices to spectral band
881	integer :: iband
882
883	real(jphook) :: hook_handle
884
885	if (lhook) call dr_hook('radiation_aerosol_optics:add_aerosol_optics_direct',0,hook_handle)
886
887	if (config%do_sw) then
888	! Check array dimensions
889	if (ubound(aerosol%od_sw,1) /= config%n_bands_sw) then
890	write(nulerr,'(a,i0,a,i0)') '*** Error: aerosol%od_sw contains ', &
891	& ubound(aerosol%od_sw,1), ' band, expected ', &
892	& config%n_bands_sw
893	call radiation_abort()
894	end if
895
896	istartlev = lbound(aerosol%od_sw,2)
897	iendlev = ubound(aerosol%od_sw,2)
898
899	! Set variables to zero that may not have been previously
900	g_sw(:,:,istartcol:iendcol) = 0.0_jprb
901
902	! Loop over position
903	do jcol = istartcol,iendcol
904	! Added for DWD (2020)
905	!NEC$ forced_collapse
906	do jlev = istartlev,iendlev
907	do jb = 1,config%n_bands_sw
908	od_sw_aerosol(jb,jlev) = aerosol%od_sw(jb,jlev,jcol)
909	scat_sw_aerosol(jb,jlev) = aerosol%ssa_sw(jb,jlev,jcol) * od_sw_aerosol(jb,jlev)
910	scat_g_sw_aerosol(jb,jlev) = aerosol%g_sw(jb,jlev,jcol) * scat_sw_aerosol(jb,jlev)
911
912	if (.not. config%do_sw_delta_scaling_with_gases) then
913	! Delta-Eddington scaling on aerosol only. Note that if
914	! do_sw_delta_scaling_with_gases==.true. then the delta
915	! scaling is done to the cloud-aerosol-gas mixture
916	! inside the solver
917	call delta_eddington_extensive(od_sw_aerosol(jb,jlev), scat_sw_aerosol(jb,jlev), &
918	& scat_g_sw_aerosol(jb,jlev))
919	end if
920	end do
921	end do
922	! Combine aerosol shortwave scattering properties with gas
923	! properties (noting that any gas scattering will have an
924	! asymmetry factor of zero)
925	do jlev = istartlev,iendlev
926	if (od_sw_aerosol(1,jlev) > 0.0_jprb) then
927	do jg = 1,config%n_g_sw
928	iband = config%i_band_from_reordered_g_sw(jg)
929	local_od = od_sw(jg,jlev,jcol) + od_sw_aerosol(iband,jlev)
930	local_scat = ssa_sw(jg,jlev,jcol) * od_sw(jg,jlev,jcol) &
931	& + scat_sw_aerosol(iband,jlev)
932	! Note that asymmetry_sw of gases is zero so the following
933	! simply weights the aerosol asymmetry by the scattering
934	! optical depth
935	g_sw(jg,jlev,jcol) = scat_g_sw_aerosol(iband,jlev) / local_scat
936	local_od = od_sw(jg,jlev,jcol) + od_sw_aerosol(iband,jlev)
937	ssa_sw(jg,jlev,jcol) = local_scat / local_od
938	od_sw (jg,jlev,jcol) = local_od
939	end do
940	end if
941	end do
942	end do
943
944	end if
945
946	if (config%do_lw) then
947
948	if (ubound(aerosol%od_lw,1) /= config%n_bands_lw) then
949	write(nulerr,'(a,i0,a,i0)') '*** Error: aerosol%od_lw contains ', &
950	& ubound(aerosol%od_lw,1), ' band, expected ', &
951	& config%n_bands_lw
952	call radiation_abort()
953	end if
954
955	istartlev = lbound(aerosol%od_lw,2)
956	iendlev = ubound(aerosol%od_lw,2)
957
958	if (config%do_lw_aerosol_scattering) then
959	ssa_lw(:,:,istartcol:iendcol) = 0.0_jprb
960	g_lw(:,:,istartcol:iendcol) = 0.0_jprb
961
962	! Loop over position
963	do jcol = istartcol,iendcol
964	! Added for DWD (2020)
965	!NEC$ forced_collapse
966	do jlev = istartlev,iendlev
967	do jb = 1,config%n_bands_lw
968	od_lw_aerosol(jb,jlev) = aerosol%od_lw(jb,jlev,jcol)
969	scat_lw_aerosol(jb,jlev) = aerosol%ssa_lw(jb,jlev,jcol) * od_lw_aerosol(jb,jlev)
970	scat_g_lw_aerosol(jb,jlev) = aerosol%g_lw(jb,jlev,jcol) * scat_lw_aerosol(jb,jlev)
971
972	call delta_eddington_extensive(od_lw_aerosol(jb,jlev), scat_lw_aerosol(jb,jlev), &
973	& scat_g_lw_aerosol(jb,jlev))
974	end do
975	end do
976	do jlev = istartlev,iendlev
977	do jg = 1,config%n_g_lw
978	iband = config%i_band_from_reordered_g_lw(jg)
979	if (od_lw_aerosol(iband,jlev) > 0.0_jprb) then
980	! All scattering is due to aerosols, therefore the
981	! asymmetry factor is equal to the value for aerosols
982	if (scat_lw_aerosol(iband,jlev) > 0.0_jprb) then
983	g_lw(jg,jlev,jcol) = scat_g_lw_aerosol(iband,jlev) &
984	& / scat_lw_aerosol(iband,jlev)
985	end if
986	local_od = od_lw(jg,jlev,jcol) + od_lw_aerosol(iband,jlev)
987	ssa_lw(jg,jlev,jcol) = scat_lw_aerosol(iband,jlev) / local_od
988	od_lw (jg,jlev,jcol) = local_od
989	end if
990	end do
991	end do
992	end do
993
994	else ! No longwave scattering
995
996	! Loop over position
997	do jcol = istartcol,iendcol
998	! Added for DWD (2020)
999	!NEC$ forced_collapse
1000	do jlev = istartlev,iendlev
1001	! If aerosol longwave scattering is not included then we
1002	! weight the optical depth by the single scattering
1003	! co-albedo
1004	do jb = 1, config%n_bands_lw
1005	od_lw_aerosol(jb,jlev) = aerosol%od_lw(jb,jlev,jcol) &
1006	& * (1.0_jprb - aerosol%ssa_lw(jb,jlev,jcol))
1007	end do
1008	end do
1009	do jlev = istartlev,iendlev
1010	do jg = 1,config%n_g_lw
1011	od_lw(jg,jlev,jcol) = od_lw(jg,jlev,jcol) &
1012	& + od_lw_aerosol(config%i_band_from_reordered_g_lw(jg),jlev)
1013	end do
1014	end do
1015	end do
1016
1017	end if
1018	end if
1019
1020
1021	if (lhook) call dr_hook('radiation_aerosol_optics:add_aerosol_optics_direct',1,hook_handle)
1022
1023	end subroutine add_aerosol_optics_direct
1024
1025
1026	!---------------------------------------------------------------------
1027	! Sometimes it is useful to specify aerosol in terms of its optical
1028	! depth at a particular wavelength. This function returns the dry
1029	! mass-extinction coefficient, i.e. the extinction cross section per
1030	! unit mass, for aerosol of type "itype" at the specified wavelength
1031	! (m). For hydrophilic types, the value at the first relative
1032	! humidity bin is taken.
1033	function dry_aerosol_mass_extinction(config, itype, wavelength)
1034
1035	use parkind1, only : jprb
1036	use radiation_io, only : nulerr, radiation_abort
1037	use radiation_config, only : config_type
1038	use radiation_aerosol_optics_data, only : aerosol_optics_type, &
1039	& IAerosolClassUndefined, IAerosolClassIgnored, &
1040	& IAerosolClassHydrophobic, IAerosolClassHydrophilic
1041
1042	type(config_type), intent(in), target :: config
1043
1044	! Aerosol type
1045	integer, intent(in) :: itype
1046
1047	! Wavelength (m)
1048	real(jprb), intent(in) :: wavelength
1049
1050	real(jprb) :: dry_aerosol_mass_extinction
1051
1052	! Index to the monochromatic wavelength requested
1053	integer :: imono
1054
1055	! Pointer to the aerosol optics coefficients for brevity of access
1056	type(aerosol_optics_type), pointer :: ao
1057
1058	ao => config%aerosol_optics
1059
1060	imono = minloc(abs(wavelength - ao%wavelength_mono), 1)
1061
1062	if (abs(wavelength - ao%wavelength_mono(imono))/wavelength > 0.02_jprb) then
1063	write(nulerr,'(a,e11.4,a)') '*** Error: requested wavelength ', &
1064	& wavelength, ' not within 2% of stored wavelengths'
1065	call radiation_abort()
1066	end if
1067
1068	if (ao%iclass(itype) == IAerosolClassHydrophobic) then
1069	dry_aerosol_mass_extinction = ao%mass_ext_mono_phobic(imono,ao%itype(itype))
1070	else if (ao%iclass(itype) == IAerosolClassHydrophilic) then
1071	! Take the value at the first relative-humidity bin for the
1072	! "dry" aerosol value
1073	dry_aerosol_mass_extinction = ao%mass_ext_mono_philic(imono,1,ao%itype(itype))
1074	else
1075	dry_aerosol_mass_extinction = 0.0_jprb
1076	end if
1077
1078	end function dry_aerosol_mass_extinction
1079
1080
1081	!---------------------------------------------------------------------
1082	! Compute aerosol extinction coefficient at a particular wavelength
1083	! and a single height - this is useful for visibility diagnostics
1084	subroutine aerosol_extinction(ncol,istartcol,iendcol, &
1085	& config, wavelength, mixing_ratio, relative_humidity, extinction)
1086
1087	use parkind1, only : jprb
1088	use yomhook, only : lhook, dr_hook, jphook
1089	use radiation_io, only : nulerr, radiation_abort
1090	use radiation_config, only : config_type
1091	use radiation_aerosol_optics_data, only : aerosol_optics_type, &
1092	& IAerosolClassUndefined, IAerosolClassIgnored, &
1093	& IAerosolClassHydrophobic, IAerosolClassHydrophilic
1094
1095	integer, intent(in) :: ncol ! number of columns
1096	integer, intent(in) :: istartcol, iendcol ! range of columns to process
1097	type(config_type), intent(in), target :: config
1098	real(jprb), intent(in) :: wavelength ! Requested wavelength (m)
1099	real(jprb), intent(in) :: mixing_ratio(ncol,config%n_aerosol_types)
1100	real(jprb), intent(in) :: relative_humidity(ncol)
1101	real(jprb), intent(out) :: extinction(ncol)
1102
1103	! Local aerosol extinction
1104	real(jprb) :: ext
1105
1106	! Index to the monochromatic wavelength requested
1107	integer :: imono
1108
1109	! Pointer to the aerosol optics coefficients for brevity of access
1110	type(aerosol_optics_type), pointer :: ao
1111
1112	! Loop indices for column and aerosol type
1113	integer :: jcol, jtype
1114
1115	! Relative humidity index
1116	integer :: irh
1117
1118	real(jphook) :: hook_handle
1119
1120	if (lhook) call dr_hook('radiation_aerosol_optics:aerosol_extinction',0,hook_handle)
1121
1122	do jtype = 1,config%n_aerosol_types
1123	if (config%aerosol_optics%iclass(jtype) == IAerosolClassUndefined) then
1124	write(nulerr,'(a)') '*** Error: not all aerosol types are defined'
1125	call radiation_abort()
1126	end if
1127	end do
1128
1129	ao => config%aerosol_optics
1130
1131	imono = minloc(abs(wavelength - ao%wavelength_mono), 1)
1132
1133	if (abs(wavelength - ao%wavelength_mono(imono))/wavelength > 0.02_jprb) then
1134	write(nulerr,'(a,e11.4,a)') '*** Error: requested wavelength ', &
1135	& wavelength, ' not within 2% of stored wavelengths'
1136	call radiation_abort()
1137	end if
1138
1139	! Loop over position
1140	do jcol = istartcol,iendcol
1141	ext = 0.0_jprb
1142	! Get relative-humidity index
1143	irh = ao%calc_rh_index(relative_humidity(jcol))
1144	! Add extinction coefficients from each aerosol type
1145	do jtype = 1,config%n_aerosol_types
1146	if (ao%iclass(jtype) == IAerosolClassHydrophobic) then
1147	ext = ext + mixing_ratio(jcol,jtype) &
1148	& * ao%mass_ext_mono_phobic(imono,ao%itype(jtype))
1149	else if (ao%iclass(jtype) == IAerosolClassHydrophilic) then
1150	ext = ext + mixing_ratio(jcol,jtype) &
1151	& * ao%mass_ext_mono_philic(imono,irh,ao%itype(jtype))
1152	end if
1153	end do
1154
1155	extinction(jcol) = ext
1156	end do
1157
1158	if (lhook) call dr_hook('radiation_aerosol_optics:aerosol_extinction',1,hook_handle)
1159
1160	end subroutine aerosol_extinction
1161
1162	end module radiation_aerosol_optics

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