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source: palm/trunk/SOURCE/ls_forcing_mod.f90 @ 2198

Last change on this file since 2198 was 2105, checked in by knoop, 8 years ago
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1	!> @file ls_forcing_mod.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
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.
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	!
17	! Copyright 1997-2017 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: ls_forcing_mod.f90 2105 2017-01-06 16:02:14Z raasch $
27	!
28	! 2104 2017-01-06 16:01:15Z knoop
29	! Bugfix for approximation related flux input conversion
30	!
31	! 2071 2016-11-17 11:22:14Z maronga
32	! Small bugfix (Resler)
33	!
34	! 2037 2016-10-26 11:15:40Z knoop
35	! Anelastic approximation implemented
36	!
37	! 2000 2016-08-20 18:09:15Z knoop
38	! Forced header and separation lines into 80 columns
39	!
40	! 1850 2016-04-08 13:29:27Z maronga
41	! Module renamed
42	!
43	!
44	! 1682 2015-10-07 23:56:08Z knoop
45	! Code annotations made doxygen readable
46	!
47	! 1602 2015-06-22 07:50:56Z heinze
48	! PA0370 changed to PA0363
49	!
50	! 1382 2014-04-30 12:15:41Z boeske
51	! Renamed variables which store large scale forcing tendencies
52	! pt_lsa -> td_lsa_lpt, pt_subs -> td_sub_lpt,
53	! q_lsa -> td_lsa_q, q_subs -> td_sub_q,
54	! high\|lowpt_lsa -> high\|low_td_lsa_lpt, ...
55	!
56	! 1365 2014-04-22 15:03:56Z boeske
57	! Usage of large scale forcing for pt and q enabled:
58	! Added new subroutine ls_advec for horizontal large scale advection and large
59	! scale subsidence,
60	! error message in init_ls_forcing specified,
61	! variable t renamed nt
62	!
63	! 1353 2014-04-08 15:21:23Z heinze
64	! REAL constants provided with KIND-attribute
65	!
66	! 1320 2014-03-20 08:40:49Z raasch
67	! ONLY-attribute added to USE-statements,
68	! kind-parameters added to all INTEGER and REAL declaration statements,
69	! kinds are defined in new module kinds,
70	! comment fields (!:) to be used for variable explanations added to
71	! all variable declaration statements
72	!
73	! 1318 2014-03-17 13:35:16Z raasch
74	! module interfaces removed
75	!
76	! 1299 2014-03-06 13:15:21Z heinze
77	! Ensure a zero large scale vertical velocity at the surface
78	! Bugfix: typo in case of boundary condition in if-clause
79	!
80	! 1276 2014-01-15 13:40:41Z heinze
81	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
82	!
83	! 1249 2013-11-06 10:45:47Z heinze
84	! remove call of user module
85	! reformatting
86	!
87	! 1241 2013-10-30 11:36:58Z heinze
88	! Initial revision
89	!
90	! Description:
91	! ------------
92	!> Calculates large scale forcings (geostrophic wind and subsidence velocity) as
93	!> well as surfaces fluxes dependent on time given in an external file (LSF_DATA).
94	!> Code is based in parts on DALES and UCLA-LES.
95	!--------------------------------------------------------------------------------!
96	MODULE ls_forcing_mod
97
98
99	PRIVATE
100	PUBLIC init_ls_forcing, ls_forcing_surf, ls_forcing_vert, ls_advec
101	SAVE
102
103	INTERFACE ls_advec
104	MODULE PROCEDURE ls_advec
105	MODULE PROCEDURE ls_advec_ij
106	END INTERFACE ls_advec
107
108	CONTAINS
109
110	!------------------------------------------------------------------------------!
111	! Description:
112	! ------------
113	!> @todo Missing subroutine description.
114	!------------------------------------------------------------------------------!
115	SUBROUTINE init_ls_forcing
116
117	USE arrays_3d, &
118	ONLY: p_surf, pt_surf, q_surf, qsws_surf, shf_surf, td_lsa_lpt, &
119	td_lsa_q, td_sub_lpt, td_sub_q, time_surf, time_vert, &
120	ug_vert, vg_vert, wsubs_vert, zu
121
122	USE control_parameters, &
123	ONLY: end_time, lsf_surf, lsf_vert, message_string, nlsf
124
125	USE indices, &
126	ONLY: ngp_sums_ls, nzb, nz, nzt
127
128	USE kinds
129
130	USE statistics, &
131	ONLY: sums_ls_l
132
133
134	IMPLICIT NONE
135
136	CHARACTER(100) :: chmess !<
137	CHARACTER(1) :: hash !<
138
139	INTEGER(iwp) :: ierrn !<
140	INTEGER(iwp) :: finput = 90 !<
141	INTEGER(iwp) :: k !<
142	INTEGER(iwp) :: nt !<
143
144	REAL(wp) :: fac !<
145	REAL(wp) :: highheight !<
146	REAL(wp) :: highug_vert !<
147	REAL(wp) :: highvg_vert !<
148	REAL(wp) :: highwsubs_vert !<
149	REAL(wp) :: lowheight !<
150	REAL(wp) :: lowug_vert !<
151	REAL(wp) :: lowvg_vert !<
152	REAL(wp) :: lowwsubs_vert !<
153	REAL(wp) :: high_td_lsa_lpt !<
154	REAL(wp) :: low_td_lsa_lpt !<
155	REAL(wp) :: high_td_lsa_q !<
156	REAL(wp) :: low_td_lsa_q !<
157	REAL(wp) :: high_td_sub_lpt !<
158	REAL(wp) :: low_td_sub_lpt !<
159	REAL(wp) :: high_td_sub_q !<
160	REAL(wp) :: low_td_sub_q !<
161	REAL(wp) :: r_dummy !<
162
163	ALLOCATE( p_surf(0:nlsf), pt_surf(0:nlsf), q_surf(0:nlsf), &
164	qsws_surf(0:nlsf), shf_surf(0:nlsf), &
165	td_lsa_lpt(nzb:nzt+1,0:nlsf), td_lsa_q(nzb:nzt+1,0:nlsf), &
166	td_sub_lpt(nzb:nzt+1,0:nlsf), td_sub_q(nzb:nzt+1,0:nlsf), &
167	time_vert(0:nlsf), time_surf(0:nlsf), &
168	ug_vert(nzb:nzt+1,0:nlsf), vg_vert(nzb:nzt+1,0:nlsf), &
169	wsubs_vert(nzb:nzt+1,0:nlsf) )
170
171	p_surf = 0.0_wp; pt_surf = 0.0_wp; q_surf = 0.0_wp; qsws_surf = 0.0_wp
172	shf_surf = 0.0_wp; time_vert = 0.0_wp; td_lsa_lpt = 0.0_wp
173	td_lsa_q = 0.0_wp; td_sub_lpt = 0.0_wp; td_sub_q = 0.0_wp
174	time_surf = 0.0_wp; ug_vert = 0.0_wp; vg_vert = 0.0_wp
175	wsubs_vert = 0.0_wp
176
177	!
178	!-- Array for storing large scale forcing and nudging tendencies at each
179	!-- timestep for data output
180	ALLOCATE( sums_ls_l(nzb:nzt+1,0:7) )
181	sums_ls_l = 0.0_wp
182
183	ngp_sums_ls = (nz+2)*6
184
185	OPEN ( finput, FILE='LSF_DATA', STATUS='OLD', &
186	FORM='FORMATTED', IOSTAT=ierrn )
187
188	IF ( ierrn /= 0 ) THEN
189	message_string = 'file LSF_DATA does not exist'
190	CALL message( 'ls_forcing', 'PA0368', 1, 2, 0, 6, 0 )
191	ENDIF
192
193	ierrn = 0
194	!
195	!-- First three lines of LSF_DATA contain header
196	READ ( finput, FMT='(a100)', IOSTAT=ierrn ) chmess
197	READ ( finput, FMT='(a100)', IOSTAT=ierrn ) chmess
198	READ ( finput, FMT='(a100)', IOSTAT=ierrn ) chmess
199
200	IF ( ierrn /= 0 ) THEN
201	message_string = 'errors in file LSF_DATA'
202	CALL message( 'ls_forcing', 'PA0369', 1, 2, 0, 6, 0 )
203	ENDIF
204
205	!
206	!-- Surface values are read in
207	nt = 0
208	ierrn = 0
209
210	DO WHILE ( time_surf(nt) < end_time )
211	nt = nt + 1
212	READ ( finput, *, IOSTAT = ierrn ) time_surf(nt), shf_surf(nt), &
213	qsws_surf(nt), pt_surf(nt), &
214	q_surf(nt), p_surf(nt)
215
216	IF ( ierrn < 0 ) THEN
217	WRITE ( message_string, * ) 'No time dependent surface variables ',&
218	'in&LSF_DATA for end of run found'
219
220	CALL message( 'ls_forcing', 'PA0363', 1, 2, 0, 6, 0 )
221	ENDIF
222	ENDDO
223
224	IF ( time_surf(1) > end_time ) THEN
225	WRITE ( message_string, * ) 'No time dependent surface variables in ',&
226	'&LSF_DATA for end of run found - ', &
227	'lsf_surf is set to FALSE'
228	CALL message( 'ls_forcing', 'PA0371', 0, 0, 0, 6, 0 )
229	lsf_surf = .FALSE.
230	ENDIF
231
232	!
233	!-- Go to the end of the list with surface variables
234	DO WHILE ( ierrn == 0 )
235	READ ( finput, *, IOSTAT = ierrn ) r_dummy
236	ENDDO
237
238	!
239	!-- Profiles of ug, vg and w_subs are read in (large scale forcing)
240
241	nt = 0
242	DO WHILE ( time_vert(nt) < end_time )
243	nt = nt + 1
244	hash = "#"
245	ierrn = 1 ! not zero
246	!
247	!-- Search for the next line consisting of "# time",
248	!-- from there onwards the profiles will be read
249	DO WHILE ( .NOT. ( hash == "#" .AND. ierrn == 0 ) )
250	READ ( finput, *, IOSTAT=ierrn ) hash, time_vert(nt)
251	IF ( ierrn < 0 ) THEN
252	WRITE( message_string, * ) 'No time dependent vertical profiles',&
253	' in&LSF_DATA for end of run found'
254	CALL message( 'ls_forcing', 'PA0372', 1, 2, 0, 6, 0 )
255	ENDIF
256	ENDDO
257
258	IF ( nt == 1 .AND. time_vert(nt) > end_time ) EXIT
259
260	READ ( finput, *, IOSTAT=ierrn ) lowheight, lowug_vert, lowvg_vert, &
261	lowwsubs_vert, low_td_lsa_lpt, &
262	low_td_lsa_q, low_td_sub_lpt, &
263	low_td_sub_q
264	IF ( ierrn /= 0 ) THEN
265	message_string = 'errors in file LSF_DATA'
266	CALL message( 'ls_forcing', 'PA0369', 1, 2, 0, 6, 0 )
267	ENDIF
268
269	READ ( finput, *, IOSTAT=ierrn ) highheight, highug_vert, &
270	highvg_vert, highwsubs_vert, &
271	high_td_lsa_lpt, high_td_lsa_q, &
272	high_td_sub_lpt, high_td_sub_q
273
274	IF ( ierrn /= 0 ) THEN
275	message_string = 'errors in file LSF_DATA'
276	CALL message( 'ls_forcing', 'PA0369', 1, 2, 0, 6, 0 )
277	ENDIF
278
279
280	DO k = nzb, nzt+1
281	IF ( highheight < zu(k) ) THEN
282	lowheight = highheight
283	lowug_vert = highug_vert
284	lowvg_vert = highvg_vert
285	lowwsubs_vert = highwsubs_vert
286	low_td_lsa_lpt = high_td_lsa_lpt
287	low_td_lsa_q = high_td_lsa_q
288	low_td_sub_lpt = high_td_sub_lpt
289	low_td_sub_q = high_td_sub_q
290
291	ierrn = 0
292	READ ( finput, *, IOSTAT=ierrn ) highheight, highug_vert, &
293	highvg_vert, highwsubs_vert, &
294	high_td_lsa_lpt, &
295	high_td_lsa_q, &
296	high_td_sub_lpt, high_td_sub_q
297
298	IF ( ierrn /= 0 ) THEN
299	WRITE( message_string, * ) 'zu(nzt+1) = ', zu(nzt+1), 'm ', &
300	'is higher than the maximum height in LSF_DATA which ',&
301	'is ', lowheight, 'm. Interpolation on PALM ', &
302	'grid is not possible.'
303	CALL message( 'ls_forcing', 'PA0395', 1, 2, 0, 6, 0 )
304	ENDIF
305
306	ENDIF
307
308	!
309	!-- Interpolation of prescribed profiles in space
310	fac = (highheight-zu(k))/(highheight - lowheight)
311
312	ug_vert(k,nt) = fac * lowug_vert &
313	+ ( 1.0_wp - fac ) * highug_vert
314	vg_vert(k,nt) = fac * lowvg_vert &
315	+ ( 1.0_wp - fac ) * highvg_vert
316	wsubs_vert(k,nt) = fac * lowwsubs_vert &
317	+ ( 1.0_wp - fac ) * highwsubs_vert
318
319	td_lsa_lpt(k,nt) = fac * low_td_lsa_lpt &
320	+ ( 1.0_wp - fac ) * high_td_lsa_lpt
321	td_lsa_q(k,nt) = fac * low_td_lsa_q &
322	+ ( 1.0_wp - fac ) * high_td_lsa_q
323	td_sub_lpt(k,nt) = fac * low_td_sub_lpt &
324	+ ( 1.0_wp - fac ) * high_td_sub_lpt
325	td_sub_q(k,nt) = fac * low_td_sub_q &
326	+ ( 1.0_wp - fac ) * high_td_sub_q
327
328	ENDDO
329
330	ENDDO
331
332	!
333	!-- Large scale vertical velocity has to be zero at the surface
334	wsubs_vert(nzb,:) = 0.0_wp
335
336	IF ( time_vert(1) > end_time ) THEN
337	WRITE ( message_string, * ) 'Time dependent large scale profile ', &
338	'forcing from&LSF_DATA sets in after end of ' , &
339	'simulation - lsf_vert is set to FALSE'
340	CALL message( 'ls_forcing', 'PA0373', 0, 0, 0, 6, 0 )
341	lsf_vert = .FALSE.
342	ENDIF
343
344	CLOSE( finput )
345
346
347	END SUBROUTINE init_ls_forcing
348
349
350	!------------------------------------------------------------------------------!
351	! Description:
352	! ------------
353	!> @todo Missing subroutine description.
354	!------------------------------------------------------------------------------!
355	SUBROUTINE ls_forcing_surf ( time )
356
357	USE arrays_3d, &
358	ONLY: p_surf, pt_surf, q_surf, qsws, qsws_surf, shf, shf_surf, &
359	heatflux_input_conversion, waterflux_input_conversion, &
360	time_surf, time_vert, ug, ug_vert, vg, vg_vert
361
362	USE control_parameters, &
363	ONLY: bc_q_b, ibc_pt_b, ibc_q_b, pt_surface, q_surface, &
364	surface_pressure
365
366	USE indices, &
367	ONLY: nzb
368
369	USE kinds
370
371	IMPLICIT NONE
372
373	INTEGER(iwp) :: nt !<
374
375	REAL(wp) :: fac !<
376	REAL(wp), INTENT(in) :: time !<
377
378	!
379	!-- Interpolation in time of LSF_DATA at the surface
380	nt = 1
381	DO WHILE ( time > time_surf(nt) )
382	nt = nt + 1
383	ENDDO
384	IF ( time /= time_surf(nt) ) THEN
385	nt = nt - 1
386	ENDIF
387
388	fac = ( time -time_surf(nt) ) / ( time_surf(nt+1) - time_surf(nt) )
389
390	IF ( ibc_pt_b == 0 ) THEN
391	!
392	!-- In case of Dirichlet boundary condition shf must not
393	!-- be set - it is calculated via MOST in prandtl_fluxes
394	pt_surface = pt_surf(nt) + fac * ( pt_surf(nt+1) - pt_surf(nt) )
395
396	ELSEIF ( ibc_pt_b == 1 ) THEN
397	!
398	!-- In case of Neumann boundary condition pt_surface is needed for
399	!-- calculation of reference density
400	shf = ( shf_surf(nt) + fac * ( shf_surf(nt+1) - shf_surf(nt) )&
401	) * heatflux_input_conversion(nzb)
402	pt_surface = pt_surf(nt) + fac * ( pt_surf(nt+1) - pt_surf(nt) )
403
404	ENDIF
405
406	IF ( ibc_q_b == 0 ) THEN
407	!
408	!-- In case of Dirichlet boundary condition qsws must not
409	!-- be set - it is calculated via MOST in prandtl_fluxes
410	q_surface = q_surf(nt) + fac * ( q_surf(nt+1) - q_surf(nt) )
411
412	ELSEIF ( ibc_q_b == 1 ) THEN
413
414	qsws = ( qsws_surf(nt) + fac * ( qsws_surf(nt+1) - qsws_surf(nt) ) &
415	) * waterflux_input_conversion(nzb)
416
417	ENDIF
418
419	surface_pressure = p_surf(nt) + fac * ( p_surf(nt+1) - p_surf(nt) )
420
421	END SUBROUTINE ls_forcing_surf
422
423
424	!------------------------------------------------------------------------------!
425	! Description:
426	! ------------
427	!> @todo Missing subroutine description.
428	!------------------------------------------------------------------------------!
429	SUBROUTINE ls_forcing_vert ( time )
430
431	USE arrays_3d, &
432	ONLY: time_vert, ug, ug_vert, vg, vg_vert, w_subs, wsubs_vert
433
434	USE control_parameters, &
435	ONLY: large_scale_subsidence
436
437	USE kinds
438
439	IMPLICIT NONE
440
441	INTEGER(iwp) :: nt !<
442
443	REAL(wp) :: fac !<
444	REAL(wp), INTENT(in) :: time !<
445
446	!
447	!-- Interpolation in time of LSF_DATA for ug, vg and w_subs
448	nt = 1
449	DO WHILE ( time > time_vert(nt) )
450	nt = nt + 1
451	ENDDO
452	IF ( time /= time_vert(nt) ) THEN
453	nt = nt - 1
454	ENDIF
455
456	fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) )
457
458	ug = ug_vert(:,nt) + fac * ( ug_vert(:,nt+1) - ug_vert(:,nt) )
459	vg = vg_vert(:,nt) + fac * ( vg_vert(:,nt+1) - vg_vert(:,nt) )
460
461	IF ( large_scale_subsidence ) THEN
462	w_subs = wsubs_vert(:,nt) &
463	+ fac * ( wsubs_vert(:,nt+1) - wsubs_vert(:,nt) )
464	ENDIF
465
466	END SUBROUTINE ls_forcing_vert
467
468
469	!------------------------------------------------------------------------------!
470	! Description:
471	! ------------
472	!> Call for all grid points
473	!------------------------------------------------------------------------------!
474	SUBROUTINE ls_advec ( time, prog_var )
475
476	USE arrays_3d, &
477	ONLY: td_lsa_lpt, td_lsa_q, td_sub_lpt, td_sub_q, tend, time_vert
478
479	USE control_parameters, &
480	ONLY: large_scale_subsidence, use_subsidence_tendencies
481
482	USE indices
483
484	USE kinds
485
486	IMPLICIT NONE
487
488	CHARACTER (LEN=*) :: prog_var !<
489
490	REAL(wp), INTENT(in) :: time !<
491	REAL(wp) :: fac !<
492
493	INTEGER(iwp) :: i !<
494	INTEGER(iwp) :: j !<
495	INTEGER(iwp) :: k !<
496	INTEGER(iwp) :: nt !<
497
498	!
499	!-- Interpolation in time of LSF_DATA
500	nt = 1
501	DO WHILE ( time > time_vert(nt) )
502	nt = nt + 1
503	ENDDO
504	IF ( time /= time_vert(nt) ) THEN
505	nt = nt - 1
506	ENDIF
507
508	fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) )
509
510	!
511	!-- Add horizontal large scale advection tendencies of pt and q
512	SELECT CASE ( prog_var )
513
514	CASE ( 'pt' )
515
516	DO i = nxl, nxr
517	DO j = nys, nyn
518	DO k = nzb_u_inner(j,i)+1, nzt
519	tend(k,j,i) = tend(k,j,i) + td_lsa_lpt(k,nt) + fac * &
520	( td_lsa_lpt(k,nt+1) - td_lsa_lpt(k,nt) )
521	ENDDO
522	ENDDO
523	ENDDO
524
525	CASE ( 'q' )
526
527	DO i = nxl, nxr
528	DO j = nys, nyn
529	DO k = nzb_u_inner(j,i)+1, nzt
530	tend(k,j,i) = tend(k,j,i) + td_lsa_q(k,nt) + fac * &
531	( td_lsa_q(k,nt+1) - td_lsa_q(k,nt) )
532	ENDDO
533	ENDDO
534	ENDDO
535
536	END SELECT
537
538	!
539	!-- Subsidence of pt and q with prescribed subsidence tendencies
540	IF ( large_scale_subsidence .AND. use_subsidence_tendencies ) THEN
541
542	SELECT CASE ( prog_var )
543
544	CASE ( 'pt' )
545
546	DO i = nxl, nxr
547	DO j = nys, nyn
548	DO k = nzb_u_inner(j,i)+1, nzt
549	tend(k,j,i) = tend(k,j,i) + td_sub_lpt(k,nt) + fac * &
550	( td_sub_lpt(k,nt+1) - td_sub_lpt(k,nt) )
551	ENDDO
552	ENDDO
553	ENDDO
554
555	CASE ( 'q' )
556
557	DO i = nxl, nxr
558	DO j = nys, nyn
559	DO k = nzb_u_inner(j,i)+1, nzt
560	tend(k,j,i) = tend(k,j,i) + td_sub_q(k,nt) + fac * &
561	( td_sub_q(k,nt+1) - td_sub_q(k,nt) )
562	ENDDO
563	ENDDO
564	ENDDO
565
566	END SELECT
567
568	ENDIF
569
570	END SUBROUTINE ls_advec
571
572
573	!------------------------------------------------------------------------------!
574	! Description:
575	! ------------
576	!> Call for grid point i,j
577	!------------------------------------------------------------------------------!
578	SUBROUTINE ls_advec_ij ( i, j, time, prog_var )
579
580	USE arrays_3d, &
581	ONLY: td_lsa_lpt, td_lsa_q, td_sub_lpt, td_sub_q, tend, time_vert
582
583	USE control_parameters, &
584	ONLY: large_scale_subsidence, use_subsidence_tendencies
585
586	USE indices
587
588	USE kinds
589
590	IMPLICIT NONE
591
592	CHARACTER (LEN=*) :: prog_var !<
593
594	REAL(wp), INTENT(in) :: time !<
595	REAL(wp) :: fac !<
596
597	INTEGER(iwp) :: i !<
598	INTEGER(iwp) :: j !<
599	INTEGER(iwp) :: k !<
600	INTEGER(iwp) :: nt !<
601
602	!
603	!-- Interpolation in time of LSF_DATA
604	nt = 1
605	DO WHILE ( time > time_vert(nt) )
606	nt = nt + 1
607	ENDDO
608	IF ( time /= time_vert(nt) ) THEN
609	nt = nt - 1
610	ENDIF
611
612	fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) )
613
614	!
615	!-- Add horizontal large scale advection tendencies of pt and q
616	SELECT CASE ( prog_var )
617
618	CASE ( 'pt' )
619
620	DO k = nzb_u_inner(j,i)+1, nzt
621	tend(k,j,i) = tend(k,j,i) + td_lsa_lpt(k,nt) &
622	+ fac * ( td_lsa_lpt(k,nt+1) - td_lsa_lpt(k,nt) )
623	ENDDO
624
625	CASE ( 'q' )
626
627	DO k = nzb_u_inner(j,i)+1, nzt
628	tend(k,j,i) = tend(k,j,i) + td_lsa_q(k,nt) &
629	+ fac * ( td_lsa_q(k,nt+1) - td_lsa_q(k,nt) )
630	ENDDO
631
632	END SELECT
633
634	!
635	!-- Subsidence of pt and q with prescribed profiles
636	IF ( large_scale_subsidence .AND. use_subsidence_tendencies ) THEN
637
638	SELECT CASE ( prog_var )
639
640	CASE ( 'pt' )
641
642	DO k = nzb_u_inner(j,i)+1, nzt
643	tend(k,j,i) = tend(k,j,i) + td_sub_lpt(k,nt) + fac * &
644	( td_sub_lpt(k,nt+1) - td_sub_lpt(k,nt) )
645	ENDDO
646
647	CASE ( 'q' )
648
649	DO k = nzb_u_inner(j,i)+1, nzt
650	tend(k,j,i) = tend(k,j,i) + td_sub_q(k,nt) + fac * &
651	( td_sub_q(k,nt+1) - td_sub_q(k,nt) )
652	ENDDO
653
654	END SELECT
655
656	ENDIF
657
658	END SUBROUTINE ls_advec_ij
659
660
661	END MODULE ls_forcing_mod

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