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source: palm/trunk/SOURCE/spectra_mod.f90 @ 3189

Last change on this file since 3189 was 3049, checked in by Giersch, 6 years ago
Revision history corrected
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File size: 29.0 KB

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1	!> @file spectra_mod.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
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 1997-2018 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: spectra_mod.f90 3049 2018-05-29 13:52:36Z Giersch $
27	! Error messages revised
28	!
29	! 3045 2018-05-28 07:55:41Z Giersch
30	! Error message revised
31	!
32	! 2956 2018-04-10 11:01:03Z Giersch
33	! spectrum_x and spectrum_y will only be allocated if they are not allocated
34	! before (e.g. in case of restart runs)
35	!
36	! 2932 2018-03-26 09:39:22Z maronga
37	! renamed spectra_par to spectra_parameters
38	!
39	! 2841 2018-02-27 15:02:57Z knoop
40	! Bugfix: wrong placement of include 'mpif.h' corrected
41	!
42	! 2718 2018-01-02 08:49:38Z maronga
43	! Corrected "Former revisions" section
44	!
45	! 2696 2017-12-14 17:12:51Z kanani
46	! Change in file header (GPL part)
47	!
48	! 2216 2017-04-28 12:54:20Z suehring
49	!
50	! 2193 2017-03-22 04:21:28Z raasch
51	! Normalization of spectra output adjusted
52	!
53	! 2192 2017-03-22 04:14:10Z raasch
54	! bugfix for index bounds of arrays spectrum_x and spectrum_y
55	!
56	! 2000 2016-08-20 18:09:15Z knoop
57	! Forced header and separation lines into 80 columns
58	!
59	! 1960 2016-07-12 16:34:24Z suehring
60	! Additional default spectra for passive scalar
61	!
62	! 1833 2016-04-07 14:23:03Z raasch
63	! file renamed, reading the spectra_par NAMELIST moved from package_parin to
64	! here
65	!
66	! 1815 2016-04-06 13:49:59Z raasch
67	! bugfix: preprocessor directives included for the non-parallel case
68	!
69	! 1808 2016-04-05 19:44:00Z raasch
70	! MPI module used by default on all machines
71	!
72	! 1786 2016-03-08 05:49:27Z raasch
73	! routine is modularized, filename renamed from calc_spectra to spectrum,
74	! privious data module spectrum moved from modules.f90 to here,
75	! cpp-direktives for spectra removed, immediate return if no spectra levels are
76	! given
77	!
78	! 1682 2015-10-07 23:56:08Z knoop
79	! Code annotations made doxygen readable
80	!
81	! 1575 2015-03-27 09:56:27Z raasch
82	! adjustments for psolver-queries
83	!
84	! 1511 2014-12-16 15:54:16Z suehring
85	! Bugfix concerning spectra normalization
86	!
87	! 1431 2014-07-15 14:47:17Z suehring
88	! Wavenumber-integrated spectra coincide with respective variance.
89	!
90	! 1342 2014-03-26 17:04:47Z kanani
91	! REAL constants defined as wp-kinds
92	!
93	! 1324 2014-03-21 09:13:16Z suehring
94	! Bugfix: nzb_x, nzb_yd, nyn_x, nyn_x, nzt_x, nzt_yd belong to transpose_indices
95	!
96	! 1320 2014-03-20 08:40:49Z raasch
97	! ONLY-attribute added to USE-statements,
98	! kind-parameters added to all INTEGER and REAL declaration statements,
99	! kinds are defined in new module kinds,
100	! revision history before 2012 removed,
101	! comment fields (!:) to be used for variable explanations added to
102	! all variable declaration statements
103	!
104	! 1318 2014-03-17 13:35:16Z raasch
105	! module interfaces removed
106	!
107	! 1216 2013-08-26 09:31:42Z raasch
108	! resorting of array moved to separate routine resort_for_zx,
109	! one argument removed from the transpose_..d routines
110	!
111	! 1120 2013-04-05 15:11:35Z raasch
112	! bugfix: calls of fft_x\|y replaced by fft_x\|y_1d
113	!
114	! 1036 2012-10-22 13:43:42Z raasch
115	! code put under GPL (PALM 3.9)
116	!
117	! 1003 2012-09-14 14:35:53Z raasch
118	! adjustment of array tend for cases with unequal subdomain sizes removed
119	!
120	! Revision 1.1 2001/01/05 15:08:07 raasch
121	! Initial revision
122	!
123	!
124	! Description:
125	! ------------
126	!> Calculate horizontal spectra along x and y.
127	!> ATTENTION: 1d-decomposition along y still needs improvement, because in that
128	!> case the gridpoint number along z still depends on the PE number
129	!> because transpose_xz has to be used (and possibly also
130	!> transpose_zyd needs modification).
131	!------------------------------------------------------------------------------!
132	MODULE spectra_mod
133
134	USE kinds
135
136	PRIVATE
137
138	CHARACTER (LEN=2), DIMENSION(10) :: spectra_direction = 'x'
139	CHARACTER (LEN=10), DIMENSION(10) :: data_output_sp = ' '
140
141	INTEGER(iwp) :: average_count_sp = 0
142	INTEGER(iwp) :: dosp_time_count = 0
143	INTEGER(iwp) :: n_sp_x = 0, n_sp_y = 0
144
145	INTEGER(iwp) :: comp_spectra_level(100) = 999999
146
147	LOGICAL :: calculate_spectra = .FALSE. !< internal switch that spectra are calculated
148	LOGICAL :: spectra_initialized = .FALSE. !< internal switch that spectra related quantities are initialized
149
150	REAL(wp) :: averaging_interval_sp = 9999999.9_wp !< averaging interval for spectra output
151	REAL(wp) :: dt_dosp = 9999999.9_wp !< time interval for spectra output
152	REAL(wp) :: skip_time_dosp = 9999999.9_wp !< no output of spectra data before this interval has passed
153
154	REAL(wp), DIMENSION(:), ALLOCATABLE :: var_d
155
156	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: spectrum_x, spectrum_y
157
158	SAVE
159
160	INTERFACE calc_spectra
161	MODULE PROCEDURE calc_spectra
162	END INTERFACE calc_spectra
163
164	INTERFACE preprocess_spectra
165	MODULE PROCEDURE preprocess_spectra
166	END INTERFACE preprocess_spectra
167
168	INTERFACE calc_spectra_x
169	MODULE PROCEDURE calc_spectra_x
170	END INTERFACE calc_spectra_x
171
172	INTERFACE calc_spectra_y
173	MODULE PROCEDURE calc_spectra_y
174	END INTERFACE calc_spectra_y
175
176	INTERFACE spectra_check_parameters
177	MODULE PROCEDURE spectra_check_parameters
178	END INTERFACE spectra_check_parameters
179
180	INTERFACE spectra_header
181	MODULE PROCEDURE spectra_header
182	END INTERFACE spectra_header
183
184	INTERFACE spectra_init
185	MODULE PROCEDURE spectra_init
186	END INTERFACE spectra_init
187
188	INTERFACE spectra_parin
189	MODULE PROCEDURE spectra_parin
190	END INTERFACE spectra_parin
191
192	PUBLIC average_count_sp, averaging_interval_sp, calc_spectra, &
193	calculate_spectra, comp_spectra_level, data_output_sp, &
194	dosp_time_count, dt_dosp, n_sp_x, n_sp_y, plot_spectra_level, &
195	skip_time_dosp, spectra_check_parameters, spectra_direction, &
196	spectra_header, spectra_init, spectra_parin, spectrum_x, &
197	spectrum_y, var_d
198
199
200	CONTAINS
201
202	!------------------------------------------------------------------------------!
203	! Description:
204	! ------------
205	!> Parin for &spectra_par for calculating spectra
206	!------------------------------------------------------------------------------!
207	SUBROUTINE spectra_parin
208
209	USE control_parameters, &
210	ONLY: dt_data_output, message_string
211
212	IMPLICIT NONE
213
214	CHARACTER (LEN=80) :: line !< dummy string that contains the current &
215	!< line of the parameter file
216
217	NAMELIST /spectra_par/ averaging_interval_sp, comp_spectra_level, &
218	data_output_sp, dt_dosp, skip_time_dosp, &
219	spectra_direction
220
221	NAMELIST /spectra_parameters/ &
222	averaging_interval_sp, comp_spectra_level, &
223	data_output_sp, dt_dosp, skip_time_dosp, &
224	spectra_direction
225	!
226	!-- Position the namelist-file at the beginning (it was already opened in
227	!-- parin), search for the namelist-group of the package and position the
228	!-- file at this line.
229	line = ' '
230
231	!
232	!-- Try to find the spectra package
233	REWIND ( 11 )
234	line = ' '
235	DO WHILE ( INDEX( line, '&spectra_parameters' ) == 0 )
236	READ ( 11, '(A)', END=10 ) line
237	ENDDO
238	BACKSPACE ( 11 )
239
240	!
241	!-- Read namelist
242	READ ( 11, spectra_parameters )
243
244	!
245	!-- Default setting of dt_dosp here (instead of check_parameters), because
246	!-- its current value is needed in init_pegrid
247	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
248
249	!
250	!-- Set general switch that spectra shall be calculated
251	calculate_spectra = .TRUE.
252
253	GOTO 12
254	!
255	!-- Try to find the old namelist
256	10 REWIND ( 11 )
257	line = ' '
258	DO WHILE ( INDEX( line, '&spectra_par' ) == 0 )
259	READ ( 11, '(A)', END=12 ) line
260	ENDDO
261	BACKSPACE ( 11 )
262
263	!
264	!-- Read namelist
265	READ ( 11, spectra_par )
266
267
268	message_string = 'namelist spectra_par is deprecated and will be ' // &
269	'removed in near future. Please use namelist ' // &
270	'spectra_parameters instead'
271	CALL message( 'spectra_parin', 'PA0487', 0, 1, 0, 6, 0 )
272	!
273	!-- Default setting of dt_dosp here (instead of check_parameters), because
274	!-- its current value is needed in init_pegrid
275	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
276
277	!
278	!-- Set general switch that spectra shall be calculated
279	calculate_spectra = .TRUE.
280
281
282	12 CONTINUE
283
284	END SUBROUTINE spectra_parin
285
286
287
288	!------------------------------------------------------------------------------!
289	! Description:
290	! ------------
291	!> Initialization of spectra related variables
292	!------------------------------------------------------------------------------!
293	SUBROUTINE spectra_init
294
295	USE indices, &
296	ONLY: nx, ny, nzb, nzt
297
298	IMPLICIT NONE
299
300	IF ( spectra_initialized ) RETURN
301
302	IF ( dt_dosp /= 9999999.9_wp ) THEN
303
304	IF ( .NOT. ALLOCATED( spectrum_x ) ) THEN
305	ALLOCATE( spectrum_x( 1:nx/2, 1:100, 1:10 ) )
306	spectrum_x = 0.0_wp
307	ENDIF
308
309	IF ( .NOT. ALLOCATED( spectrum_y ) ) THEN
310	ALLOCATE( spectrum_y( 1:ny/2, 1:100, 1:10 ) )
311	spectrum_y = 0.0_wp
312	ENDIF
313
314	ALLOCATE( var_d(nzb:nzt+1) )
315	var_d = 0.0_wp
316	ENDIF
317
318	spectra_initialized = .TRUE.
319
320	END SUBROUTINE spectra_init
321
322
323
324	!------------------------------------------------------------------------------!
325	! Description:
326	! ------------
327	!> Check spectra related quantities
328	!------------------------------------------------------------------------------!
329	SUBROUTINE spectra_check_parameters
330
331	USE control_parameters, &
332	ONLY: averaging_interval, message_string, skip_time_data_output
333
334	IMPLICIT NONE
335
336	!
337	!-- Check the average interval
338	IF ( averaging_interval_sp == 9999999.9_wp ) THEN
339	averaging_interval_sp = averaging_interval
340	ENDIF
341
342	IF ( averaging_interval_sp > dt_dosp ) THEN
343	WRITE( message_string, * ) 'averaging_interval_sp = ', &
344	averaging_interval_sp, ' must be <= dt_dosp = ', dt_dosp
345	CALL message( 'spectra_check_parameters', 'PA0087', 1, 2, 0, 6, 0 )
346	ENDIF
347
348	!
349	!-- Set the default skip time interval for data output, if necessary
350	IF ( skip_time_dosp == 9999999.9_wp ) &
351	skip_time_dosp = skip_time_data_output
352
353	END SUBROUTINE spectra_check_parameters
354
355
356
357	!------------------------------------------------------------------------------!
358	! Description:
359	! ------------
360	!> Header output for spectra
361	!>
362	!> @todo Output of netcdf data format and compression level
363	!------------------------------------------------------------------------------!
364	SUBROUTINE spectra_header ( io )
365
366	USE control_parameters, &
367	ONLY: dt_averaging_input_pr
368
369	! USE netcdf_interface, &
370	! ONLY: netcdf_data_format_string, netcdf_deflate
371
372	IMPLICIT NONE
373
374	CHARACTER (LEN=40) :: output_format !< internal string
375
376	INTEGER(iwp) :: i !< internal counter
377	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
378
379	!
380	!-- Spectra output
381	IF ( dt_dosp /= 9999999.9_wp ) THEN
382	WRITE ( io, 1 )
383
384	! output_format = netcdf_data_format_string
385	! IF ( netcdf_deflate == 0 ) THEN
386	! WRITE ( io, 2 ) output_format
387	! ELSE
388	! WRITE ( io, 3 ) TRIM( output_format ), netcdf_deflate
389	! ENDIF
390	WRITE ( io, 2 ) 'see profiles or other quantities'
391	WRITE ( io, 4 ) dt_dosp
392	IF ( skip_time_dosp /= 0.0_wp ) WRITE ( io, 5 ) skip_time_dosp
393	WRITE ( io, 6 ) ( data_output_sp(i), i = 1,10 ), &
394	( spectra_direction(i), i = 1,10 ), &
395	( comp_spectra_level(i), i = 1,100 ), &
396	averaging_interval_sp, dt_averaging_input_pr
397	ENDIF
398
399	1 FORMAT (' Spectra:')
400	2 FORMAT (' Output format: ',A/)
401	3 FORMAT (' Output format: ',A, ' compressed with level: ',I1/)
402	4 FORMAT (' Output every ',F7.1,' s'/)
403	5 FORMAT (' No output during initial ',F8.2,' s')
404	6 FORMAT (' Arrays: ', 10(A5,',')/ &
405	' Directions: ', 10(A5,',')/ &
406	' height levels k = ', 20(I3,',')/ &
407	' ', 20(I3,',')/ &
408	' ', 20(I3,',')/ &
409	' ', 20(I3,',')/ &
410	' ', 19(I3,','),I3,'.'/ &
411	' Time averaged over ', F7.1, ' s,' / &
412	' Profiles for the time averaging are taken every ', &
413	F6.1,' s')
414
415	END SUBROUTINE spectra_header
416
417
418
419	SUBROUTINE calc_spectra
420
421	USE arrays_3d, &
422	ONLY: d, tend
423
424	USE control_parameters, &
425	ONLY: bc_lr_cyc, bc_ns_cyc, message_string, psolver
426
427	USE cpulog, &
428	ONLY: cpu_log, log_point
429
430	USE fft_xy, &
431	ONLY: fft_init
432
433	USE indices, &
434	ONLY: nxl, nxr, nyn, nys, nzb, nzt
435
436	USE kinds
437
438	USE pegrid, &
439	ONLY: myid, pdims
440
441	IMPLICIT NONE
442
443	INTEGER(iwp) :: m !<
444	INTEGER(iwp) :: pr !<
445
446
447	!
448	!-- Check if user gave any levels for spectra to be calculated
449	IF ( comp_spectra_level(1) == 999999 ) RETURN
450
451	CALL cpu_log( log_point(30), 'calc_spectra', 'start' )
452
453	!
454	!-- Initialize spectra related quantities
455	CALL spectra_init
456
457	!
458	!-- Initialize ffts
459	CALL fft_init
460
461	!
462	!-- Reallocate array d in required size
463	IF ( psolver(1:9) == 'multigrid' ) THEN
464	DEALLOCATE( d )
465	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr) )
466	ENDIF
467
468	m = 1
469	DO WHILE ( data_output_sp(m) /= ' ' .AND. m <= 10 )
470	!
471	!-- Transposition from z --> x ( y --> x in case of a 1d-decomposition
472	!-- along x)
473	IF ( INDEX( spectra_direction(m), 'x' ) /= 0 ) THEN
474
475	!
476	!-- Calculation of spectra works for cyclic boundary conditions only
477	IF ( .NOT. bc_lr_cyc ) THEN
478
479	message_string = 'non-cyclic lateral boundaries along x do'// &
480	' not & allow calculation of spectra along x'
481	CALL message( 'calc_spectra', 'PA0160', 1, 2, 0, 6, 0 )
482	ENDIF
483
484	CALL preprocess_spectra( m, pr )
485
486	#if defined( __parallel )
487	IF ( pdims(2) /= 1 ) THEN
488	CALL resort_for_zx( d, tend )
489	CALL transpose_zx( tend, d )
490	ELSE
491	CALL transpose_yxd( d, d )
492	ENDIF
493	CALL calc_spectra_x( d, pr, m )
494	#else
495	message_string = 'sorry, calculation of spectra in non paral' // &
496	'lel mode& is still not realized'
497	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
498	#endif
499
500	ENDIF
501
502	!
503	!-- Transposition from z --> y (d is rearranged only in case of a
504	!-- 1d-decomposition along x)
505	IF ( INDEX( spectra_direction(m), 'y' ) /= 0 ) THEN
506
507	!
508	!-- Calculation of spectra works for cyclic boundary conditions only
509	IF ( .NOT. bc_ns_cyc ) THEN
510	IF ( myid == 0 ) THEN
511	message_string = 'non-cyclic lateral boundaries along y' // &
512	' do not & allow calculation of spectra' //&
513	' along y'
514	CALL message( 'calc_spectra', 'PA0162', 1, 2, 0, 6, 0 )
515	ENDIF
516	CALL local_stop
517	ENDIF
518
519	CALL preprocess_spectra( m, pr )
520
521	#if defined( __parallel )
522	CALL transpose_zyd( d, d )
523	CALL calc_spectra_y( d, pr, m )
524	#else
525	message_string = 'sorry, calculation of spectra in non paral' // &
526	'lel mode& is still not realized'
527	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
528	#endif
529
530	ENDIF
531
532	!
533	!-- Increase counter for next spectrum
534	m = m + 1
535
536	ENDDO
537
538	!
539	!-- Increase counter for averaging process in routine plot_spectra
540	average_count_sp = average_count_sp + 1
541
542	CALL cpu_log( log_point(30), 'calc_spectra', 'stop' )
543
544	END SUBROUTINE calc_spectra
545
546
547	!------------------------------------------------------------------------------!
548	! Description:
549	! ------------
550	!> @todo Missing subroutine description.
551	!------------------------------------------------------------------------------!
552	SUBROUTINE preprocess_spectra( m, pr )
553
554	USE arrays_3d, &
555	ONLY: d, pt, q, s, u, v, w
556
557	USE indices, &
558	ONLY: ngp_2dh, nxl, nxr, nyn, nys, nzb, nzt
559
560	USE kinds
561
562	#if defined( __parallel )
563	#if !defined( __mpifh )
564	USE MPI
565	#endif
566	#endif
567
568	USE pegrid, &
569	ONLY: collective_wait, comm2d, ierr
570
571	USE statistics, &
572	ONLY: hom
573
574
575	IMPLICIT NONE
576
577	#if defined( __parallel )
578	#if defined( __mpifh )
579	INCLUDE "mpif.h"
580	#endif
581	#endif
582
583	INTEGER(iwp) :: i !<
584	INTEGER(iwp) :: j !<
585	INTEGER(iwp) :: k !<
586	INTEGER(iwp) :: m !<
587	INTEGER(iwp) :: pr !<
588
589	REAL(wp), DIMENSION(nzb:nzt+1) :: var_d_l
590
591	SELECT CASE ( TRIM( data_output_sp(m) ) )
592
593	CASE ( 'u' )
594	pr = 1
595	d(nzb+1:nzt,nys:nyn,nxl:nxr) = u(nzb+1:nzt,nys:nyn,nxl:nxr)
596
597	CASE ( 'v' )
598	pr = 2
599	d(nzb+1:nzt,nys:nyn,nxl:nxr) = v(nzb+1:nzt,nys:nyn,nxl:nxr)
600
601	CASE ( 'w' )
602	pr = 3
603	d(nzb+1:nzt,nys:nyn,nxl:nxr) = w(nzb+1:nzt,nys:nyn,nxl:nxr)
604
605	CASE ( 'pt' )
606	pr = 4
607	d(nzb+1:nzt,nys:nyn,nxl:nxr) = pt(nzb+1:nzt,nys:nyn,nxl:nxr)
608
609	CASE ( 'q' )
610	pr = 41
611	d(nzb+1:nzt,nys:nyn,nxl:nxr) = q(nzb+1:nzt,nys:nyn,nxl:nxr)
612
613	CASE ( 's' )
614	pr = 117
615	d(nzb+1:nzt,nys:nyn,nxl:nxr) = s(nzb+1:nzt,nys:nyn,nxl:nxr)
616
617	CASE DEFAULT
618	!
619	!-- The DEFAULT case is reached either if the parameter data_output_sp(m)
620	!-- contains a wrong character string or if the user has coded a special
621	!-- case in the user interface. There, the subroutine user_spectra
622	!-- checks which of these two conditions applies.
623	CALL user_spectra( 'preprocess', m, pr )
624
625	END SELECT
626
627	!
628	!-- Subtract horizontal mean from the array, for which spectra have to be
629	!-- calculated. Moreover, calculate variance of the respective quantitiy,
630	!-- later used for normalizing spectra output.
631	var_d_l(:) = 0.0_wp
632	DO i = nxl, nxr
633	DO j = nys, nyn
634	DO k = nzb+1, nzt
635	d(k,j,i) = d(k,j,i) - hom(k,1,pr,0)
636	var_d_l(k) = var_d_l(k) + d(k,j,i) * d(k,j,i)
637	ENDDO
638	ENDDO
639	ENDDO
640	!
641	!-- Compute total variance from local variances
642	var_d(:) = 0.0_wp
643	#if defined( __parallel )
644	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
645	CALL MPI_ALLREDUCE( var_d_l(0), var_d(0), nzt+1-nzb, MPI_REAL, MPI_SUM, &
646	comm2d, ierr )
647	#else
648	var_d(:) = var_d_l(:)
649	#endif
650	var_d(:) = var_d(:) / ngp_2dh(0)
651
652	END SUBROUTINE preprocess_spectra
653
654
655	!------------------------------------------------------------------------------!
656	! Description:
657	! ------------
658	!> @todo Missing subroutine description.
659	!------------------------------------------------------------------------------!
660	SUBROUTINE calc_spectra_x( ddd, pr, m )
661
662	USE control_parameters, &
663	ONLY: fft_method
664
665	USE fft_xy, &
666	ONLY: fft_x_1d
667
668	USE grid_variables, &
669	ONLY: dx
670
671	USE indices, &
672	ONLY: nx, ny
673
674	USE kinds
675
676	#if defined( __parallel )
677	#if !defined( __mpifh )
678	USE MPI
679	#endif
680	#endif
681
682	USE pegrid, &
683	ONLY: comm2d, ierr, myid
684
685	USE transpose_indices, &
686	ONLY: nyn_x, nys_x, nzb_x, nzt_x
687
688
689	IMPLICIT NONE
690
691	#if defined( __parallel )
692	#if defined( __mpifh )
693	INCLUDE "mpif.h"
694	#endif
695	#endif
696
697	INTEGER(iwp) :: i !<
698	INTEGER(iwp) :: ishape(1) !<
699	INTEGER(iwp) :: j !<
700	INTEGER(iwp) :: k !<
701	INTEGER(iwp) :: m !<
702	INTEGER(iwp) :: n !<
703	INTEGER(iwp) :: pr !<
704
705	REAL(wp) :: exponent !<
706	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
707
708	REAL(wp), DIMENSION(0:nx) :: work !<
709
710	REAL(wp), DIMENSION(0:nx/2) :: sums_spectra_l !<
711
712	REAL(wp), DIMENSION(0:nx/2,100) :: sums_spectra !<
713
714	REAL(wp), DIMENSION(0:nx,nys_x:nyn_x,nzb_x:nzt_x) :: ddd !<
715
716	!
717	!-- Exponent for geometric average
718	exponent = 1.0_wp / ( ny + 1.0_wp )
719
720	!
721	!-- Loop over all levels defined by the user
722	n = 1
723	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
724
725	k = comp_spectra_level(n)
726
727	!
728	!-- Calculate FFT only if the corresponding level is situated on this PE
729	IF ( k >= nzb_x .AND. k <= nzt_x ) THEN
730
731	DO j = nys_x, nyn_x
732
733	work = ddd(0:nx,j,k)
734	CALL fft_x_1d( work, 'forward' )
735
736	ddd(0,j,k) = dx * work(0)**2
737	DO i = 1, nx/2
738	ddd(i,j,k) = dx * ( work(i)2 + work(nx+1-i)2 )
739	ENDDO
740
741	ENDDO
742
743	!
744	!-- Local sum and geometric average of these spectra
745	!-- (WARNING: no global sum should be performed, because floating
746	!-- point overflow may occur)
747	DO i = 0, nx/2
748
749	sums_spectra_l(i) = 1.0_wp
750	DO j = nys_x, nyn_x
751	sums_spectra_l(i) = sums_spectra_l(i) * ddd(i,j,k)**exponent
752	ENDDO
753
754	ENDDO
755
756	ELSE
757
758	sums_spectra_l = 1.0_wp
759
760	ENDIF
761
762	!
763	!-- Global sum of spectra on PE0 (from where they are written on file)
764	sums_spectra(:,n) = 0.0_wp
765	#if defined( __parallel )
766	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
767	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), nx/2+1, &
768	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
769	#else
770	sums_spectra(:,n) = sums_spectra_l
771	#endif
772	!
773	!-- Normalize spectra by variance
774	sum_spec_dum = SUM( sums_spectra(1:nx/2,n) )
775
776	IF ( sum_spec_dum /= 0.0_wp ) THEN
777	sums_spectra(1:nx/2,n) = sums_spectra(1:nx/2,n) * &
778	var_d(k) / sum_spec_dum
779	ENDIF
780	n = n + 1
781
782	ENDDO
783	n = n - 1
784
785	IF ( myid == 0 ) THEN
786	!
787	!-- Sum of spectra for later averaging (see routine data_output_spectra)
788	DO i = 1, nx/2
789	DO k = 1, n
790	spectrum_x(i,k,m) = spectrum_x(i,k,m) + sums_spectra(i,k)
791	ENDDO
792	ENDDO
793
794	ENDIF
795	!
796	!-- n_sp_x is needed by data_output_spectra_x
797	n_sp_x = n
798
799	END SUBROUTINE calc_spectra_x
800
801
802	!------------------------------------------------------------------------------!
803	! Description:
804	! ------------
805	!> @todo Missing subroutine description.
806	!------------------------------------------------------------------------------!
807	SUBROUTINE calc_spectra_y( ddd, pr, m )
808
809	USE control_parameters, &
810	ONLY: fft_method
811
812	USE fft_xy, &
813	ONLY: fft_y_1d
814
815	USE grid_variables, &
816	ONLY: dy
817
818	USE indices, &
819	ONLY: nx, ny
820
821	USE kinds
822
823	#if defined( __parallel )
824	#if !defined( __mpifh )
825	USE MPI
826	#endif
827	#endif
828
829	USE pegrid, &
830	ONLY: comm2d, ierr, myid
831
832	USE transpose_indices, &
833	ONLY: nxl_yd, nxr_yd, nzb_yd, nzt_yd
834
835
836	IMPLICIT NONE
837
838	#if defined( __parallel )
839	#if defined( __mpifh )
840	INCLUDE "mpif.h"
841	#endif
842	#endif
843
844	INTEGER(iwp) :: i !<
845	INTEGER(iwp) :: j !<
846	INTEGER(iwp) :: jshape(1) !<
847	INTEGER(iwp) :: k !<
848	INTEGER(iwp) :: m !<
849	INTEGER(iwp) :: n !<
850	INTEGER(iwp) :: pr !<
851
852	REAL(wp) :: exponent !<
853	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
854
855	REAL(wp), DIMENSION(0:ny) :: work !<
856
857	REAL(wp), DIMENSION(0:ny/2) :: sums_spectra_l !<
858
859	REAL(wp), DIMENSION(0:ny/2,100) :: sums_spectra !<
860
861	REAL(wp), DIMENSION(0:ny,nxl_yd:nxr_yd,nzb_yd:nzt_yd) :: ddd !<
862
863
864	!
865	!-- Exponent for geometric average
866	exponent = 1.0_wp / ( nx + 1.0_wp )
867
868	!
869	!-- Loop over all levels defined by the user
870	n = 1
871	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
872
873	k = comp_spectra_level(n)
874
875	!
876	!-- Calculate FFT only if the corresponding level is situated on this PE
877	IF ( k >= nzb_yd .AND. k <= nzt_yd ) THEN
878
879	DO i = nxl_yd, nxr_yd
880
881	work = ddd(0:ny,i,k)
882	CALL fft_y_1d( work, 'forward' )
883
884	ddd(0,i,k) = dy * work(0)**2
885	DO j = 1, ny/2
886	ddd(j,i,k) = dy * ( work(j)2 + work(ny+1-j)2 )
887	ENDDO
888
889	ENDDO
890
891	!
892	!-- Local sum and geometric average of these spectra
893	!-- (WARNING: no global sum should be performed, because floating
894	!-- point overflow may occur)
895	DO j = 0, ny/2
896
897	sums_spectra_l(j) = 1.0_wp
898	DO i = nxl_yd, nxr_yd
899	sums_spectra_l(j) = sums_spectra_l(j) * ddd(j,i,k)**exponent
900	ENDDO
901
902	ENDDO
903
904	ELSE
905
906	sums_spectra_l = 1.0_wp
907
908	ENDIF
909
910	!
911	!-- Global sum of spectra on PE0 (from where they are written on file)
912	sums_spectra(:,n) = 0.0_wp
913	#if defined( __parallel )
914	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
915	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), ny/2+1, &
916	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
917	#else
918	sums_spectra(:,n) = sums_spectra_l
919	#endif
920	!
921	!-- Normalize spectra by variance
922	sum_spec_dum = SUM( sums_spectra(1:ny/2,n) )
923	IF ( sum_spec_dum /= 0.0_wp ) THEN
924	sums_spectra(1:ny/2,n) = sums_spectra(1:ny/2,n) * &
925	var_d(k) / sum_spec_dum
926	ENDIF
927	n = n + 1
928
929	ENDDO
930	n = n - 1
931
932
933	IF ( myid == 0 ) THEN
934	!
935	!-- Sum of spectra for later averaging (see routine data_output_spectra)
936	DO j = 1, ny/2
937	DO k = 1, n
938	spectrum_y(j,k,m) = spectrum_y(j,k,m) + sums_spectra(j,k)
939	ENDDO
940	ENDDO
941
942	ENDIF
943
944	!
945	!-- n_sp_y is needed by data_output_spectra_y
946	n_sp_y = n
947
948	END SUBROUTINE calc_spectra_y
949
950	END MODULE spectra_mod

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