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source: palm/trunk/SOURCE/ls_forcing_mod.f90 @ 2073

Last change on this file since 2073 was 2072, checked in by maronga, 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 1997-2016 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: ls_forcing_mod.f90 2072 2016-11-17 11:27:57Z raasch $
27	!
28	! 2071 2016-11-17 11:22:14Z maronga
29	! Small bugfix (Resler)
30	!
31	! 2037 2016-10-26 11:15:40Z knoop
32	! Anelastic approximation implemented
33	!
34	! 2000 2016-08-20 18:09:15Z knoop
35	! Forced header and separation lines into 80 columns
36	!
37	! 1850 2016-04-08 13:29:27Z maronga
38	! Module renamed
39	!
40	!
41	! 1682 2015-10-07 23:56:08Z knoop
42	! Code annotations made doxygen readable
43	!
44	! 1602 2015-06-22 07:50:56Z heinze
45	! PA0370 changed to PA0363
46	!
47	! 1382 2014-04-30 12:15:41Z boeske
48	! Renamed variables which store large scale forcing tendencies
49	! pt_lsa -> td_lsa_lpt, pt_subs -> td_sub_lpt,
50	! q_lsa -> td_lsa_q, q_subs -> td_sub_q,
51	! high\|lowpt_lsa -> high\|low_td_lsa_lpt, ...
52	!
53	! 1365 2014-04-22 15:03:56Z boeske
54	! Usage of large scale forcing for pt and q enabled:
55	! Added new subroutine ls_advec for horizontal large scale advection and large
56	! scale subsidence,
57	! error message in init_ls_forcing specified,
58	! variable t renamed nt
59	!
60	! 1353 2014-04-08 15:21:23Z heinze
61	! REAL constants provided with KIND-attribute
62	!
63	! 1320 2014-03-20 08:40:49Z raasch
64	! ONLY-attribute added to USE-statements,
65	! kind-parameters added to all INTEGER and REAL declaration statements,
66	! kinds are defined in new module kinds,
67	! comment fields (!:) to be used for variable explanations added to
68	! all variable declaration statements
69	!
70	! 1318 2014-03-17 13:35:16Z raasch
71	! module interfaces removed
72	!
73	! 1299 2014-03-06 13:15:21Z heinze
74	! Ensure a zero large scale vertical velocity at the surface
75	! Bugfix: typo in case of boundary condition in if-clause
76	!
77	! 1276 2014-01-15 13:40:41Z heinze
78	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
79	!
80	! 1249 2013-11-06 10:45:47Z heinze
81	! remove call of user module
82	! reformatting
83	!
84	! 1241 2013-10-30 11:36:58Z heinze
85	! Initial revision
86	!
87	! Description:
88	! ------------
89	!> Calculates large scale forcings (geostrophic wind and subsidence velocity) as
90	!> well as surfaces fluxes dependent on time given in an external file (LSF_DATA).
91	!> Code is based in parts on DALES and UCLA-LES.
92	!--------------------------------------------------------------------------------!
93	MODULE ls_forcing_mod
94
95
96	PRIVATE
97	PUBLIC init_ls_forcing, ls_forcing_surf, ls_forcing_vert, ls_advec
98	SAVE
99
100	INTERFACE ls_advec
101	MODULE PROCEDURE ls_advec
102	MODULE PROCEDURE ls_advec_ij
103	END INTERFACE ls_advec
104
105	CONTAINS
106
107	!------------------------------------------------------------------------------!
108	! Description:
109	! ------------
110	!> @todo Missing subroutine description.
111	!------------------------------------------------------------------------------!
112	SUBROUTINE init_ls_forcing
113
114	USE arrays_3d, &
115	ONLY: p_surf, pt_surf, q_surf, qsws_surf, shf_surf, td_lsa_lpt, &
116	td_lsa_q, td_sub_lpt, td_sub_q, time_surf, time_vert, &
117	heatflux_input_conversion, waterflux_input_conversion, &
118	ug_vert, vg_vert, wsubs_vert, zu
119
120	USE control_parameters, &
121	ONLY: end_time, lsf_surf, lsf_vert, message_string, nlsf
122
123	USE indices, &
124	ONLY: ngp_sums_ls, nzb, nz, nzt
125
126	USE kinds
127
128	USE statistics, &
129	ONLY: sums_ls_l
130
131
132	IMPLICIT NONE
133
134	CHARACTER(100) :: chmess !<
135	CHARACTER(1) :: hash !<
136
137	INTEGER(iwp) :: ierrn !<
138	INTEGER(iwp) :: finput = 90 !<
139	INTEGER(iwp) :: k !<
140	INTEGER(iwp) :: nt !<
141
142	REAL(wp) :: fac !<
143	REAL(wp) :: highheight !<
144	REAL(wp) :: highug_vert !<
145	REAL(wp) :: highvg_vert !<
146	REAL(wp) :: highwsubs_vert !<
147	REAL(wp) :: lowheight !<
148	REAL(wp) :: lowug_vert !<
149	REAL(wp) :: lowvg_vert !<
150	REAL(wp) :: lowwsubs_vert !<
151	REAL(wp) :: high_td_lsa_lpt !<
152	REAL(wp) :: low_td_lsa_lpt !<
153	REAL(wp) :: high_td_lsa_q !<
154	REAL(wp) :: low_td_lsa_q !<
155	REAL(wp) :: high_td_sub_lpt !<
156	REAL(wp) :: low_td_sub_lpt !<
157	REAL(wp) :: high_td_sub_q !<
158	REAL(wp) :: low_td_sub_q !<
159	REAL(wp) :: r_dummy !<
160
161	ALLOCATE( p_surf(0:nlsf), pt_surf(0:nlsf), q_surf(0:nlsf), &
162	qsws_surf(0:nlsf), shf_surf(0:nlsf), &
163	td_lsa_lpt(nzb:nzt+1,0:nlsf), td_lsa_q(nzb:nzt+1,0:nlsf), &
164	td_sub_lpt(nzb:nzt+1,0:nlsf), td_sub_q(nzb:nzt+1,0:nlsf), &
165	time_vert(0:nlsf), time_surf(0:nlsf), &
166	ug_vert(nzb:nzt+1,0:nlsf), vg_vert(nzb:nzt+1,0:nlsf), &
167	wsubs_vert(nzb:nzt+1,0:nlsf) )
168
169	p_surf = 0.0_wp; pt_surf = 0.0_wp; q_surf = 0.0_wp; qsws_surf = 0.0_wp
170	shf_surf = 0.0_wp; time_vert = 0.0_wp; td_lsa_lpt = 0.0_wp
171	td_lsa_q = 0.0_wp; td_sub_lpt = 0.0_wp; td_sub_q = 0.0_wp
172	time_surf = 0.0_wp; ug_vert = 0.0_wp; vg_vert = 0.0_wp
173	wsubs_vert = 0.0_wp
174
175	!
176	!-- Array for storing large scale forcing and nudging tendencies at each
177	!-- timestep for data output
178	ALLOCATE( sums_ls_l(nzb:nzt+1,0:7) )
179	sums_ls_l = 0.0_wp
180
181	ngp_sums_ls = (nz+2)*6
182
183	OPEN ( finput, FILE='LSF_DATA', STATUS='OLD', &
184	FORM='FORMATTED', IOSTAT=ierrn )
185
186	IF ( ierrn /= 0 ) THEN
187	message_string = 'file LSF_DATA does not exist'
188	CALL message( 'ls_forcing', 'PA0368', 1, 2, 0, 6, 0 )
189	ENDIF
190
191	ierrn = 0
192	!
193	!-- First three lines of LSF_DATA contain header
194	READ ( finput, FMT='(a100)', IOSTAT=ierrn ) chmess
195	READ ( finput, FMT='(a100)', IOSTAT=ierrn ) chmess
196	READ ( finput, FMT='(a100)', IOSTAT=ierrn ) chmess
197
198	IF ( ierrn /= 0 ) THEN
199	message_string = 'errors in file LSF_DATA'
200	CALL message( 'ls_forcing', 'PA0369', 1, 2, 0, 6, 0 )
201	ENDIF
202
203	!
204	!-- Surface values are read in
205	nt = 0
206	ierrn = 0
207
208	DO WHILE ( time_surf(nt) < end_time )
209	nt = nt + 1
210	READ ( finput, *, IOSTAT = ierrn ) time_surf(nt), shf_surf(nt), &
211	qsws_surf(nt), pt_surf(nt), &
212	q_surf(nt), p_surf(nt)
213
214	IF ( ierrn < 0 ) THEN
215	WRITE ( message_string, * ) 'No time dependent surface variables ',&
216	'in&LSF_DATA for end of run found'
217
218	CALL message( 'ls_forcing', 'PA0363', 1, 2, 0, 6, 0 )
219	ENDIF
220	ENDDO
221
222	IF ( time_surf(1) > end_time ) THEN
223	WRITE ( message_string, * ) 'No time dependent surface variables in ',&
224	'&LSF_DATA for end of run found - ', &
225	'lsf_surf is set to FALSE'
226	CALL message( 'ls_forcing', 'PA0371', 0, 0, 0, 6, 0 )
227	lsf_surf = .FALSE.
228	ELSE
229	shf_surf = shf_surf * heatflux_input_conversion(nzb)
230	qsws_surf = qsws_surf * waterflux_input_conversion(nzb)
231	ENDIF
232
233	!
234	!-- Go to the end of the list with surface variables
235	DO WHILE ( ierrn == 0 )
236	READ ( finput, *, IOSTAT = ierrn ) r_dummy
237	ENDDO
238
239	!
240	!-- Profiles of ug, vg and w_subs are read in (large scale forcing)
241
242	nt = 0
243	DO WHILE ( time_vert(nt) < end_time )
244	nt = nt + 1
245	hash = "#"
246	ierrn = 1 ! not zero
247	!
248	!-- Search for the next line consisting of "# time",
249	!-- from there onwards the profiles will be read
250	DO WHILE ( .NOT. ( hash == "#" .AND. ierrn == 0 ) )
251	READ ( finput, *, IOSTAT=ierrn ) hash, time_vert(nt)
252	IF ( ierrn < 0 ) THEN
253	WRITE( message_string, * ) 'No time dependent vertical profiles',&
254	' in&LSF_DATA for end of run found'
255	CALL message( 'ls_forcing', 'PA0372', 1, 2, 0, 6, 0 )
256	ENDIF
257	ENDDO
258
259	IF ( nt == 1 .AND. time_vert(nt) > end_time ) EXIT
260
261	READ ( finput, *, IOSTAT=ierrn ) lowheight, lowug_vert, lowvg_vert, &
262	lowwsubs_vert, low_td_lsa_lpt, &
263	low_td_lsa_q, low_td_sub_lpt, &
264	low_td_sub_q
265	IF ( ierrn /= 0 ) THEN
266	message_string = 'errors in file LSF_DATA'
267	CALL message( 'ls_forcing', 'PA0369', 1, 2, 0, 6, 0 )
268	ENDIF
269
270	READ ( finput, *, IOSTAT=ierrn ) highheight, highug_vert, &
271	highvg_vert, highwsubs_vert, &
272	high_td_lsa_lpt, high_td_lsa_q, &
273	high_td_sub_lpt, high_td_sub_q
274
275	IF ( ierrn /= 0 ) THEN
276	message_string = 'errors in file LSF_DATA'
277	CALL message( 'ls_forcing', 'PA0369', 1, 2, 0, 6, 0 )
278	ENDIF
279
280
281	DO k = nzb, nzt+1
282	IF ( highheight < zu(k) ) THEN
283	lowheight = highheight
284	lowug_vert = highug_vert
285	lowvg_vert = highvg_vert
286	lowwsubs_vert = highwsubs_vert
287	low_td_lsa_lpt = high_td_lsa_lpt
288	low_td_lsa_q = high_td_lsa_q
289	low_td_sub_lpt = high_td_sub_lpt
290	low_td_sub_q = high_td_sub_q
291
292	ierrn = 0
293	READ ( finput, *, IOSTAT=ierrn ) highheight, highug_vert, &
294	highvg_vert, highwsubs_vert, &
295	high_td_lsa_lpt, &
296	high_td_lsa_q, &
297	high_td_sub_lpt, high_td_sub_q
298
299	IF ( ierrn /= 0 ) THEN
300	WRITE( message_string, * ) 'zu(nzt+1) = ', zu(nzt+1), 'm ', &
301	'is higher than the maximum height in LSF_DATA which ',&
302	'is ', lowheight, 'm. Interpolation on PALM ', &
303	'grid is not possible.'
304	CALL message( 'ls_forcing', 'PA0395', 1, 2, 0, 6, 0 )
305	ENDIF
306
307	ENDIF
308
309	!
310	!-- Interpolation of prescribed profiles in space
311	fac = (highheight-zu(k))/(highheight - lowheight)
312
313	ug_vert(k,nt) = fac * lowug_vert &
314	+ ( 1.0_wp - fac ) * highug_vert
315	vg_vert(k,nt) = fac * lowvg_vert &
316	+ ( 1.0_wp - fac ) * highvg_vert
317	wsubs_vert(k,nt) = fac * lowwsubs_vert &
318	+ ( 1.0_wp - fac ) * highwsubs_vert
319
320	td_lsa_lpt(k,nt) = fac * low_td_lsa_lpt &
321	+ ( 1.0_wp - fac ) * high_td_lsa_lpt
322	td_lsa_q(k,nt) = fac * low_td_lsa_q &
323	+ ( 1.0_wp - fac ) * high_td_lsa_q
324	td_sub_lpt(k,nt) = fac * low_td_sub_lpt &
325	+ ( 1.0_wp - fac ) * high_td_sub_lpt
326	td_sub_q(k,nt) = fac * low_td_sub_q &
327	+ ( 1.0_wp - fac ) * high_td_sub_q
328
329	ENDDO
330
331	ENDDO
332
333	!
334	!-- Large scale vertical velocity has to be zero at the surface
335	wsubs_vert(nzb,:) = 0.0_wp
336
337	IF ( time_vert(1) > end_time ) THEN
338	WRITE ( message_string, * ) 'Time dependent large scale profile ', &
339	'forcing from&LSF_DATA sets in after end of ' , &
340	'simulation - lsf_vert is set to FALSE'
341	CALL message( 'ls_forcing', 'PA0373', 0, 0, 0, 6, 0 )
342	lsf_vert = .FALSE.
343	ENDIF
344
345	CLOSE( finput )
346
347
348	END SUBROUTINE init_ls_forcing
349
350
351	!------------------------------------------------------------------------------!
352	! Description:
353	! ------------
354	!> @todo Missing subroutine description.
355	!------------------------------------------------------------------------------!
356	SUBROUTINE ls_forcing_surf ( time )
357
358	USE arrays_3d, &
359	ONLY: p_surf, pt_surf, q_surf, qsws, qsws_surf, shf, shf_surf, &
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 kinds
367
368	IMPLICIT NONE
369
370	INTEGER(iwp) :: nt !<
371
372	REAL(wp) :: fac !<
373	REAL(wp), INTENT(in) :: time !<
374
375	!
376	!-- Interpolation in time of LSF_DATA at the surface
377	nt = 1
378	DO WHILE ( time > time_surf(nt) )
379	nt = nt + 1
380	ENDDO
381	IF ( time /= time_surf(nt) ) THEN
382	nt = nt - 1
383	ENDIF
384
385	fac = ( time -time_surf(nt) ) / ( time_surf(nt+1) - time_surf(nt) )
386
387	IF ( ibc_pt_b == 0 ) THEN
388	!
389	!-- In case of Dirichlet boundary condition shf must not
390	!-- be set - it is calculated via MOST in prandtl_fluxes
391	pt_surface = pt_surf(nt) + fac * ( pt_surf(nt+1) - pt_surf(nt) )
392
393	ELSEIF ( ibc_pt_b == 1 ) THEN
394	!
395	!-- In case of Neumann boundary condition pt_surface is needed for
396	!-- calculation of reference density
397	shf = shf_surf(nt) + fac * ( shf_surf(nt+1) - shf_surf(nt) )
398	pt_surface = pt_surf(nt) + fac * ( pt_surf(nt+1) - pt_surf(nt) )
399
400	ENDIF
401
402	IF ( ibc_q_b == 0 ) THEN
403	!
404	!-- In case of Dirichlet boundary condition qsws must not
405	!-- be set - it is calculated via MOST in prandtl_fluxes
406	q_surface = q_surf(nt) + fac * ( q_surf(nt+1) - q_surf(nt) )
407
408	ELSEIF ( ibc_q_b == 1 ) THEN
409
410	qsws = qsws_surf(nt) + fac * ( qsws_surf(nt+1) - qsws_surf(nt) )
411
412	ENDIF
413
414	surface_pressure = p_surf(nt) + fac * ( p_surf(nt+1) - p_surf(nt) )
415
416	END SUBROUTINE ls_forcing_surf
417
418
419	!------------------------------------------------------------------------------!
420	! Description:
421	! ------------
422	!> @todo Missing subroutine description.
423	!------------------------------------------------------------------------------!
424	SUBROUTINE ls_forcing_vert ( time )
425
426	USE arrays_3d, &
427	ONLY: time_vert, ug, ug_vert, vg, vg_vert, w_subs, wsubs_vert
428
429	USE control_parameters, &
430	ONLY: large_scale_subsidence
431
432	USE kinds
433
434	IMPLICIT NONE
435
436	INTEGER(iwp) :: nt !<
437
438	REAL(wp) :: fac !<
439	REAL(wp), INTENT(in) :: time !<
440
441	!
442	!-- Interpolation in time of LSF_DATA for ug, vg and w_subs
443	nt = 1
444	DO WHILE ( time > time_vert(nt) )
445	nt = nt + 1
446	ENDDO
447	IF ( time /= time_vert(nt) ) THEN
448	nt = nt - 1
449	ENDIF
450
451	fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) )
452
453	ug = ug_vert(:,nt) + fac * ( ug_vert(:,nt+1) - ug_vert(:,nt) )
454	vg = vg_vert(:,nt) + fac * ( vg_vert(:,nt+1) - vg_vert(:,nt) )
455
456	IF ( large_scale_subsidence ) THEN
457	w_subs = wsubs_vert(:,nt) &
458	+ fac * ( wsubs_vert(:,nt+1) - wsubs_vert(:,nt) )
459	ENDIF
460
461	END SUBROUTINE ls_forcing_vert
462
463
464	!------------------------------------------------------------------------------!
465	! Description:
466	! ------------
467	!> Call for all grid points
468	!------------------------------------------------------------------------------!
469	SUBROUTINE ls_advec ( time, prog_var )
470
471	USE arrays_3d, &
472	ONLY: td_lsa_lpt, td_lsa_q, td_sub_lpt, td_sub_q, tend, time_vert
473
474	USE control_parameters, &
475	ONLY: large_scale_subsidence, use_subsidence_tendencies
476
477	USE indices
478
479	USE kinds
480
481	IMPLICIT NONE
482
483	CHARACTER (LEN=*) :: prog_var !<
484
485	REAL(wp), INTENT(in) :: time !<
486	REAL(wp) :: fac !<
487
488	INTEGER(iwp) :: i !<
489	INTEGER(iwp) :: j !<
490	INTEGER(iwp) :: k !<
491	INTEGER(iwp) :: nt !<
492
493	!
494	!-- Interpolation in time of LSF_DATA
495	nt = 1
496	DO WHILE ( time > time_vert(nt) )
497	nt = nt + 1
498	ENDDO
499	IF ( time /= time_vert(nt) ) THEN
500	nt = nt - 1
501	ENDIF
502
503	fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) )
504
505	!
506	!-- Add horizontal large scale advection tendencies of pt and q
507	SELECT CASE ( prog_var )
508
509	CASE ( 'pt' )
510
511	DO i = nxl, nxr
512	DO j = nys, nyn
513	DO k = nzb_u_inner(j,i)+1, nzt
514	tend(k,j,i) = tend(k,j,i) + td_lsa_lpt(k,nt) + fac * &
515	( td_lsa_lpt(k,nt+1) - td_lsa_lpt(k,nt) )
516	ENDDO
517	ENDDO
518	ENDDO
519
520	CASE ( 'q' )
521
522	DO i = nxl, nxr
523	DO j = nys, nyn
524	DO k = nzb_u_inner(j,i)+1, nzt
525	tend(k,j,i) = tend(k,j,i) + td_lsa_q(k,nt) + fac * &
526	( td_lsa_q(k,nt+1) - td_lsa_q(k,nt) )
527	ENDDO
528	ENDDO
529	ENDDO
530
531	END SELECT
532
533	!
534	!-- Subsidence of pt and q with prescribed subsidence tendencies
535	IF ( large_scale_subsidence .AND. use_subsidence_tendencies ) THEN
536
537	SELECT CASE ( prog_var )
538
539	CASE ( 'pt' )
540
541	DO i = nxl, nxr
542	DO j = nys, nyn
543	DO k = nzb_u_inner(j,i)+1, nzt
544	tend(k,j,i) = tend(k,j,i) + td_sub_lpt(k,nt) + fac * &
545	( td_sub_lpt(k,nt+1) - td_sub_lpt(k,nt) )
546	ENDDO
547	ENDDO
548	ENDDO
549
550	CASE ( 'q' )
551
552	DO i = nxl, nxr
553	DO j = nys, nyn
554	DO k = nzb_u_inner(j,i)+1, nzt
555	tend(k,j,i) = tend(k,j,i) + td_sub_q(k,nt) + fac * &
556	( td_sub_q(k,nt+1) - td_sub_q(k,nt) )
557	ENDDO
558	ENDDO
559	ENDDO
560
561	END SELECT
562
563	ENDIF
564
565	END SUBROUTINE ls_advec
566
567
568	!------------------------------------------------------------------------------!
569	! Description:
570	! ------------
571	!> Call for grid point i,j
572	!------------------------------------------------------------------------------!
573	SUBROUTINE ls_advec_ij ( i, j, time, prog_var )
574
575	USE arrays_3d, &
576	ONLY: td_lsa_lpt, td_lsa_q, td_sub_lpt, td_sub_q, tend, time_vert
577
578	USE control_parameters, &
579	ONLY: large_scale_subsidence, use_subsidence_tendencies
580
581	USE indices
582
583	USE kinds
584
585	IMPLICIT NONE
586
587	CHARACTER (LEN=*) :: prog_var !<
588
589	REAL(wp), INTENT(in) :: time !<
590	REAL(wp) :: fac !<
591
592	INTEGER(iwp) :: i !<
593	INTEGER(iwp) :: j !<
594	INTEGER(iwp) :: k !<
595	INTEGER(iwp) :: nt !<
596
597	!
598	!-- Interpolation in time of LSF_DATA
599	nt = 1
600	DO WHILE ( time > time_vert(nt) )
601	nt = nt + 1
602	ENDDO
603	IF ( time /= time_vert(nt) ) THEN
604	nt = nt - 1
605	ENDIF
606
607	fac = ( time-time_vert(nt) ) / ( time_vert(nt+1)-time_vert(nt) )
608
609	!
610	!-- Add horizontal large scale advection tendencies of pt and q
611	SELECT CASE ( prog_var )
612
613	CASE ( 'pt' )
614
615	DO k = nzb_u_inner(j,i)+1, nzt
616	tend(k,j,i) = tend(k,j,i) + td_lsa_lpt(k,nt) &
617	+ fac * ( td_lsa_lpt(k,nt+1) - td_lsa_lpt(k,nt) )
618	ENDDO
619
620	CASE ( 'q' )
621
622	DO k = nzb_u_inner(j,i)+1, nzt
623	tend(k,j,i) = tend(k,j,i) + td_lsa_q(k,nt) &
624	+ fac * ( td_lsa_q(k,nt+1) - td_lsa_q(k,nt) )
625	ENDDO
626
627	END SELECT
628
629	!
630	!-- Subsidence of pt and q with prescribed profiles
631	IF ( large_scale_subsidence .AND. use_subsidence_tendencies ) THEN
632
633	SELECT CASE ( prog_var )
634
635	CASE ( 'pt' )
636
637	DO k = nzb_u_inner(j,i)+1, nzt
638	tend(k,j,i) = tend(k,j,i) + td_sub_lpt(k,nt) + fac * &
639	( td_sub_lpt(k,nt+1) - td_sub_lpt(k,nt) )
640	ENDDO
641
642	CASE ( 'q' )
643
644	DO k = nzb_u_inner(j,i)+1, nzt
645	tend(k,j,i) = tend(k,j,i) + td_sub_q(k,nt) + fac * &
646	( td_sub_q(k,nt+1) - td_sub_q(k,nt) )
647	ENDDO
648
649	END SELECT
650
651	ENDIF
652
653	END SUBROUTINE ls_advec_ij
654
655
656	END MODULE ls_forcing_mod

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