1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
|
C Copyright 1981-2007 ECMWF
C
C Licensed under the GNU Lesser General Public License which
C incorporates the terms and conditions of version 3 of the GNU
C General Public License.
C See LICENSE and gpl-3.0.txt for details.
C
INTEGER FUNCTION INTUVP( KVGRIB, KDGRIB, INLEN,
X KUGRIBO, KVGRIBO, OUTLEN)
C
C---->
C**** INTUVP
C
C Purpose
C -------
C
C Interpolate GRIB format input vorticity and divergence field to
C GRIB format U and V fields.
C
C
C Interface
C ---------
C
C IRET = INTUVP(KVGRIB,KDGRIB,INLEN,KUGRIBO,KVGRIBO,OUTLEN)
C
C Input
C -----
C
C KVGRIB - Input vorticity field (spectral, GRIB format).
C KDGRIB - Input divergence field (spectral, GRIB format).
C INLEN - Input field length (words).
C
C
C Output
C ------
C
C KUGRIBO - Output U field (GRIB format).
C KVGRIBO - Output V field (GRIB format).
C OUTLEN - Length of each output U and V field (words).
C
C
C Method
C ------
C
C Convert spectral vorticity/divergence to spectral U/V and then
C interpolate U and V to output fields.
C
C Note that a common block is used in intf.h to hold the U/V
C fields before interpolation.
C
C Externals
C ---------
C
C IBASINI - Ensure basic interpolation setup is done.
C INTUVDH - Encodes/decodes data into/from GRIB code.
C INTUVXH - Interpolate U and V spectral components to grid point.
C JVOD2UV - Converts spectral vorticity/divergence to spectral U/V.
C JMEMHAN - Allocate scratch memory.
C ISCRSZ - Calculate number of values in generated field.
C FIXAREA - Fixup area definition to correspond to grid definitions
C INTLOG - Log error message.
C RESET_C - Reset interpolation handling options using GRIB product.
C INSANE - Ensure no outrageous values given for interpolation.
C GRSMKP - P factor calculation switch for routine GRIBEX.
C
C
C Author
C ------
C
C J.D.Chambers ECMWF February 2001
C Rewritten to use more functions for processing.
C
C
C----<
C -----------------------------------------------------------------|
C
IMPLICIT NONE
C
C Function arguments
C
INTEGER KVGRIB(*), KDGRIB(*), INLEN
INTEGER KUGRIBO(*), KVGRIBO(*), OUTLEN
C
#include "parim.h"
#include "nifld.common"
#include "nofld.common"
#include "grfixed.h"
#include "intf.h"
C
C Parameters
C
INTEGER JPROUTINE, JPALLOC, JPDEALL, JPSCR3, JPSCR4,JPSCR5
INTEGER JPVORT, JPDIVE
PARAMETER (JPROUTINE = 26900 )
PARAMETER (JPALLOC = 1)
PARAMETER (JPDEALL = 0)
PARAMETER (JPSCR3 = 3)
PARAMETER (JPSCR4 = 4)
PARAMETER (JPSCR5 = 5)
PARAMETER (JPVORT = 138)
PARAMETER (JPDIVE = 155)
C
C Local variables
C
CHARACTER*1 HFUNC
REAL EW, NS, DUMMY
LOGICAL LOLDWIND, LSPECUV
INTEGER IERR,KPR,ISZVD,ISZUV,IWORD,ISIZE,ILENF,ISAME,IDIVOFF
INTEGER NEXT, LOOP, MTRUNC, NTRUNC, NTROLD, NTROLD2, NPARAM
INTEGER NOLD, NLEN, NLENU, NLENV, HNORESO
INTEGER INRESO, IHOLD
C
LOGICAL LFIRST, LNEWUV
CHARACTER*3 EXTRA
DATA LFIRST/.TRUE./, LNEWUV/.TRUE./, EXTRA/'NO '/
SAVE LFIRST, LNEWUV
C
DATA NTROLD/-1/, NTROLD2/-1/
SAVE NTROLD, NTROLD2
INTEGER IPVORT, IPDIV, IP_U, IP_V
#ifdef POINTER_64
INTEGER*8 IZNFLDO
#endif
REAL ZNFLDO
POINTER ( IZNFLDO, ZNFLDO )
DIMENSION ZNFLDO( 1 )
#ifdef POINTER_64
INTEGER*8 IUV, IVD
#endif
REAL UV, VD
POINTER ( IUV, UV )
POINTER ( IVD, VD )
DIMENSION UV( 1 ), VD( 1 )
C
C Externals
C
INTEGER RESET_C,ISCRSZ,FIXAREA,AURESOL
INTEGER IBASINI, INSANE, INTUVDH, INTUVXH
INTEGER INTUVPH, INTUVGH
C
C -----------------------------------------------------------------|
C* Section 1. Initialise
C -----------------------------------------------------------------|
C
100 CONTINUE
INTUVP = 0
IERR = 0
KPR = 0
C
IF( LFIRST ) THEN
CALL GETENV('IGNORE_UV_EXTRA_MODE', EXTRA)
IF((EXTRA(1:1).EQ.'Y').OR.(EXTRA(1:1).EQ.'y')) LNEWUV = .FALSE.
IF( LNEWUV ) THEN
CALL INTLOG(JP_DEBUG,
X 'INTUVP: IGNORE_UV_EXTRA_MODE not turned on',JPQUIET)
ELSE
CALL INTLOG(JP_DEBUG,
X 'INTUVP: IGNORE_UV_EXTRA_MODE turned on',JPQUIET)
ENDIF
LFIRST = .FALSE.
ENDIF
C
LOLDWIND = LWINDSET
LSPECUV = (NOREPR.EQ.JPSPHERE).OR.(NOREPR.EQ.JPSPHROT)
C
C Ensure that basic initialisation has been done
C
IERR = IBASINI(0)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: basic initialise failed',JPQUIET)
INTUVP = IERR
GOTO 990
ENDIF
C
C Establish truncation of the input vorticity and divergence:
C unpack GRIB sections 1 and 2.
C
NPARAM = JPVORT
ISZVD = 1
NLEN = INLEN
IERR = INTUVDH(DUMMY,ISZVD,KVGRIB,NLEN,'I',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: GRIB header decode failed',IERR)
INTUVP = IERR
GOTO 990
ENDIF
C
C If a rotation is required, check the input fields and call the
C appropriate interpolation
C
IF( LUSEHIR.AND.LNOROTA ) THEN
LWIND = .TRUE.
LWINDSET = .TRUE.
IF( (ISEC1(6).EQ.JPVORT).AND.(ISEC2(1).EQ.JPSPHERE) ) THEN
C
C Spectral vorticity/divergence to rotated U and V
C
NLEN = INLEN
NLENU = OUTLEN
NLENV = OUTLEN
IERR = INTUVPH(KVGRIB,KDGRIB,NLEN,KUGRIBO,KVGRIBO,
X NLENU,NLENV)
C
ELSE IF( ((ISEC1(6).EQ.JP_U).OR.(ISEC1(6).EQ.JP_10U)).AND.
X (ISEC2(1).EQ.JPGAUSSIAN) ) THEN
C
C Gaussian U and V to rotated U and V
C
NLEN = INLEN
NLENU = OUTLEN
NLENV = OUTLEN
IERR = INTUVGH(KVGRIB,KDGRIB,NLEN,KUGRIBO,KVGRIBO,
X NLENU,NLENV)
C
ELSE
CALL INTLOG(JP_ERROR,'INTUVP: Invalid rotation',IERR)
IERR = JPROUTINE + 1
ENDIF
C
INTUVP = IERR
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: Rotation failed',IERR)
GOTO 990
ELSE
GOTO 900
ENDIF
ENDIF
C
C -----------------------------------------------------------------|
C* Section 2. Unpack the vorticity/divergence fields.
C -----------------------------------------------------------------|
C
200 CONTINUE
C
C Get scratch memory for vorticity/divergence unpacked fields.
C Vorticity/divergence memory areas are adjacent.
C
INRESO = ISEC2(2)
ISZVD = (INRESO+1)*(INRESO+4)
IPVORT = 1
IPDIV = IPVORT + ISZVD
CALL JMEMHAN( JPSCR4, IVD, ISZVD*2, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 4 allocation failed.',JPQUIET)
INTUVP = IERR
GOTO 990
ENDIF
C
C Decode vorticity and divegence.
C
NPARAM = JPVORT
NLEN = INLEN
IERR = INTUVDH(VD(IPVORT),ISZVD,KVGRIB,NLEN,'D',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: Vorticity decoding failed',IERR)
INTUVP = IERR
GOTO 990
ENDIF
C
NPARAM = JPDIVE
NLEN = INLEN
IERR = INTUVDH(VD(IPDIV),ISZVD,KDGRIB,NLEN,'D',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: Divergence decoding failed',IERR)
INTUVP = IERR
GOTO 990
ENDIF
C
C Setup interpolation options from input GRIB characteristics.
C
IHOLD = NIRESO
IERR = RESET_C( ISEC1, ISEC2, ZSEC2, ISEC4)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Setup interp. options from GRIB failed.',JPQUIET)
INTUVP = IERR
GOTO 990
ENDIF
IF( IHOLD.NE.0 ) NIRESO = IHOLD
C
C Check that no outrageous values given for interpolation
C
ISAME = INSANE()
IF( ISAME.GT.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Interpolation cannot use given values.',JPQUIET)
INTUVP = ISAME
GOTO 990
ENDIF
C
C -----------------------------------------------------------------|
C* Section 3. Convert spectral vorticity/divergence to spectral U/V
C -----------------------------------------------------------------|
C
300 CONTINUE
C
IF( LSPECUV ) THEN
C
C Spectral U and V for Tn are to be generated from vorticity
C and divergence spectral T(n-1)
C
IF( LARESOL.AND.LNEWUV ) THEN
IF( (NOGRID(1).NE.0).AND.(NOGRID(2).NE.0) ) THEN
EW = FLOAT(NOGRID(1))/PPMULT
NS = FLOAT(NOGRID(2))/PPMULT
NTRUNC = AURESOL(NS,EW) - 1
ELSE IF( NOGAUSS.NE.0 ) THEN
EW = 90.0/FLOAT(NOGAUSS)
NS = EW
NTRUNC = AURESOL(NS,EW) - 1
ELSE IF( LNORESO ) THEN
NTRUNC = NORESO - 1
ELSE
NTRUNC = INRESO - 1
ENDIF
IF( NTRUNC.GT.(INRESO-1) ) NTRUNC = INRESO - 1
C
ELSE IF( LNORESO ) THEN
NTRUNC = NORESO - 1
ELSE
NTRUNC = INRESO - 1
ENDIF
C
IF( LNEWUV ) THEN
MTRUNC = NTRUNC + 1
ELSE
NTRUNC = NTRUNC + 1
MTRUNC = NTRUNC
ENDIF
C
C -----------------------------------------------------------------|
C Use old-style processing if IGNORE_UV_EXTRA_MODE = Y
C -----------------------------------------------------------------|
C
IF( .NOT.LNEWUV ) THEN
C
NIRESO = ISEC2(2)
C
CALL INTLOG(JP_DEBUG,'INTUVP: vo/div truncation = ', NIRESO)
C
C Get scratch memory for U and V spectral fields.
C U and V memory areas are adjacent.
C
ISZUV = MAX((NIRESO+1)*(NIRESO+4),(NORESO+1)*(NORESO+4))
IP_U = 1
IP_V = IP_U + ISZUV
C
ISIZE = ISZUV*2
CALL JMEMHAN( JPSCR3, IUV, ISIZE, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 3 allocation failed',JPQUIET)
INTUVP = IERR
GOTO 900
ENDIF
C
C Generate U and V with same truncation as input fields.
C
CALL INTLOG(JP_DEBUG,
X 'INTUVP: Make intermediate U/V with truncation = ', NIRESO)
CALL JVOD2UV(VD(IPVORT),VD(IPDIV),NIRESO,
X UV(IP_U),UV(IP_V),NIRESO)
C
C Do spectral truncation for spectral output
C
IF( LNORESO ) THEN
C
CALL INTLOG(JP_DEBUG,
X 'INTUVP: Make U/V spectral output with truncation',NORESO)
C
ISIZE = (NORESO+1)*(NORESO+4)
CALL JMEMHAN( JPSCR5, IZNFLDO, ISIZE, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 5 allocn failed',JPQUIET)
INTUVP = JPROUTINE + 4
GOTO 900
ENDIF
C
CALL SH2SH( UV(IP_U), NIRESO, ZNFLDO, NORESO )
DO LOOP = 1, (NORESO+1)*(NORESO+2)
UV(IP_U+LOOP-1) = ZNFLDO(LOOP)
ENDDO
C
CALL SH2SH( UV(IP_V), NIRESO, ZNFLDO, NORESO )
IP_V = 1 + (NORESO+1)*(NORESO+4)
DO LOOP = 1, (NORESO+1)*(NORESO+2)
UV(IP_V+LOOP-1) = ZNFLDO(LOOP)
ENDDO
C
NIRESO = NORESO
C
ENDIF
C
C Set GRIBEX flag to force recalculation of complex packing
C factor.
C
CALL GRSMKP(1)
C
C Code U into GRIB
C
NPARAM = JP_U
NLENU = OUTLEN
IERR = INTUVDH(UV(IP_U),ISZUV,KUGRIBO,NLENU,'C',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: U encoding into GRIB failed.',IERR)
INTUVP = JPROUTINE + 4
GOTO 380
ENDIF
C
C Code V into GRIB
C
NPARAM = JP_V
NLENV = OUTLEN
IERR = INTUVDH(UV(IP_V),ISZUV,KVGRIBO,NLENV,'C',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: V encoding into GRIB failed.',IERR)
INTUVP = JPROUTINE + 4
GOTO 380
ENDIF
C
380 CONTINUE
C
C Turn off GRIBEX flag which forces recalculation of complex
C packing factor
C
CALL GRSMKP(0)
C
GOTO 900
C
C -----------------------------------------------------------------|
C Use new-style processing if IGNORE_UV_EXTRA_MODE not set
C -----------------------------------------------------------------|
C
ELSE
C
CALL INTLOG(JP_DEBUG,'INTUVP: vo/div truncation = ', NTRUNC)
CALL INTLOG(JP_DEBUG,'INTUVP: U/V truncation = ', MTRUNC)
C
C Truncate vorticity and divergence to correspond to U/V
C
ISIZE = (MTRUNC+1)*(MTRUNC+4)
CALL JMEMHAN( JPSCR5, IZNFLDO, ISIZE*2, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 5 allocation failed',JPQUIET)
INTUVP = JPROUTINE + 4
GOTO 990
ENDIF
C
IPVORT = 1
IPDIV = IPVORT + (INRESO+1)*(INRESO+4)
IDIVOFF = 1 + (NTRUNC+1)*(NTRUNC+4)
C
CALL SH2SH( VD(IPVORT), INRESO, ZNFLDO, NTRUNC )
C
CALL SH2SH( VD(IPDIV), INRESO, ZNFLDO(IDIVOFF), NTRUNC )
C
C Get scratch memory for U and V spectral fields.
C U and V memory areas are adjacent.
C
ISZUV = (MTRUNC+1)*(MTRUNC+4)
IP_U = 1
IP_V = IP_U + ISZUV
C
ISIZE = ISZUV*2
CALL JMEMHAN( JPSCR3, IUV, ISIZE, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 3 allocation failed',JPQUIET)
INTUVP = IERR
GOTO 990
ENDIF
C
C Generate U and V spectral fields
C
CALL JVOD2UV(ZNFLDO(IPVORT),ZNFLDO(IDIVOFF),NTRUNC,
X UV(IP_U),UV(IP_V),MTRUNC)
C
C Set GRIBEX flag to force recalculation of complex packing
C factor.
C Preserve the original output truncation
C
CALL GRSMKP(1)
HNORESO = NORESO
C
C Code U into GRIB using the new truncation
C
NORESO = MTRUNC
NPARAM = JP_U
NLENU = OUTLEN
IERR = INTUVDH(UV(IP_U),ISZUV,KUGRIBO,NLENU,'C',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: U encoding into GRIB failed.',IERR)
INTUVP = JPROUTINE + 4
GOTO 390
ENDIF
C
C Code V into GRIB using the new truncation
C
NPARAM = JP_V
NLENV = OUTLEN
IERR = INTUVDH(UV(IP_V),ISZUV,KVGRIBO,NLENV,'C',NPARAM)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: V encoding into GRIB failed.',IERR)
INTUVP = JPROUTINE + 4
GOTO 390
ENDIF
C
390 CONTINUE
C
C Turn off GRIBEX flag which forces recalculation of complex
C packing factor
C Restore the original output truncation
C
CALL GRSMKP(0)
NORESO = HNORESO
C
GOTO 900
ENDIF
C
ENDIF
C
C -----------------------------------------------------------------|
C* Section 4. Generate grid point GRIB format U and V fields.
C -----------------------------------------------------------------|
C
400 CONTINUE
C
C Spectral U and V for Tn are to be generated from vorticity
C and divergence spectral T(n-1)
C
C See whether or not the 'autoresol' flag is set.
C If not, use the input truncation.
C
IF( LARESOL ) THEN
IF( (NOREPR.EQ.JPREGULAR).OR.(NOREPR.EQ.JPREGROT) ) THEN
EW = FLOAT(NOGRID(1))/PPMULT
NS = FLOAT(NOGRID(2))/PPMULT
ELSE
EW = 90.0/FLOAT(NOGAUSS)
NS = EW
ENDIF
NTRUNC = AURESOL(EW,NS)
IF( NTRUNC.NE.NTROLD ) THEN
NTROLD = NTRUNC
CALL INTLOG(JP_WARN,
X 'INTUVP: Resolution automatically set to ', NTRUNC)
ENDIF
ELSE IF( LNORESO ) THEN
NTRUNC = NORESO
ELSE
NTRUNC = INRESO
ENDIF
C
C Check whether the output resolution is greater than the input
C
IF( NTRUNC.GT.INRESO ) THEN
C
C Issue warning if the output resolution was user-supplied
C
IF( .NOT.LARESOL ) THEN
C
C Revert to the input truncation
C
IF( INRESO.NE.NTROLD2 ) THEN
CALL INTLOG(JP_WARN,
X 'INTUVP: spectral -> grid point interpolation',JPQUIET)
CALL INTLOG(JP_WARN,
X 'INTUVP: User supplied resolution = ',NTRUNC)
CALL INTLOG(JP_WARN,
X 'INTUVP: Input field resolution = ',INRESO)
CALL INTLOG(JP_WARN,
X 'INTUVP: User supplied resolution ignored',JPQUIET)
CALL INTLOG(JP_WARN,
X 'INTUVP: Input field resolution has been used',JPQUIET)
NTROLD2 = INRESO
ENDIF
NTRUNC = INRESO
C
ELSE
C
C Revert to the input truncation
C
NTRUNC = INRESO
IF( NTRUNC.NE.NTROLD2 ) THEN
NTROLD2 = NTRUNC
CALL INTLOG(JP_WARN,
X 'INTUVP: Auto-resolution selection too high',JPQUIET)
CALL INTLOG(JP_WARN,
X 'INTUVP: Resolution set to input resolution: ',NTRUNC)
ENDIF
ENDIF
ENDIF
C
C IF extra mode is in use, adjust the calculated truncation.
C
MTRUNC = NTRUNC
IF( LNEWUV ) NTRUNC = MTRUNC - 1
C
CALL INTLOG(JP_DEBUG,'INTUVP: vo/div truncation = ', NTRUNC)
CALL INTLOG(JP_DEBUG,'INTUVP: U/V truncation = ', MTRUNC)
C
ISIZE = (MTRUNC+1)*(MTRUNC+4)
CALL JMEMHAN( JPSCR5, IZNFLDO, ISIZE*2, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 5 allocation failed.',JPQUIET)
INTUVP = JPROUTINE + 4
GOTO 990
ENDIF
C
IPVORT = 1
IPDIV = 1 + (INRESO+1)*(INRESO+4)
IDIVOFF = IPVORT + (NTRUNC+1)*(NTRUNC+4)
C
CALL SH2SH( VD(IPDIV), INRESO, ZNFLDO(IDIVOFF), NTRUNC )
C
CALL SH2SH( VD(IPVORT), INRESO, ZNFLDO, NTRUNC )
C
C Get scratch memory for U and V spectral fields.
C U and V memory areas are adjacent.
C
ISZUV = (MTRUNC+1)*(MTRUNC+4)
IP_U = 1
IP_V = IP_U + ISZUV
C
ISIZE = ISZUV*2
CALL JMEMHAN( JPSCR3, IUV, ISIZE, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory type 3 allocation failed.',JPQUIET)
INTUVP = IERR
GOTO 990
ENDIF
C
C Generate U and V spectral fields
C
CALL JVOD2UV(ZNFLDO(IPVORT),ZNFLDO(IDIVOFF),NTRUNC,
X UV(IP_U),UV(IP_V),MTRUNC)
C
C Get scratch space for interpolation
C
IERR = FIXAREA()
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: Fixarea failed.',JPQUIET)
INTUVP = IERR
GOTO 990
ENDIF
C
ISIZE = ISCRSZ()*2
IF( ISIZE.LE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTUVP: Get scratch space failed.',ISIZE)
INTUVP = JPROUTINE + 5
GOTO 990
ENDIF
CALL JMEMHAN( JPSCR5, IZNFLDO, ISIZE, JPALLOC, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: Scratch memory(5) allocation failed.',JPQUIET)
INTUVP = JPROUTINE + 5
GOTO 990
ENDIF
C
LWIND = .TRUE.
LWINDSET = .TRUE.
C
C Interpolate U and V
C
NOLD = NIRESO
NIRESO = MTRUNC
NLENU = OUTLEN
NLENV = OUTLEN
IERR = INTUVXH(UV,ISZUV,ZNFLDO,KUGRIBO,KVGRIBO,NLENU,NLENV)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTUVP: U/V interpolation failed.',JPQUIET)
INTUVP = JPROUTINE + 6
GOTO 990
ENDIF
C
NIRESO = NOLD
C
C -----------------------------------------------------------------|
C* Section 9. Return
C -----------------------------------------------------------------|
C
900 CONTINUE
C
OUTLEN = NLENU
C
990 CONTINUE
C
C Clear change flags for next product processing and reset wind flag
C
LCHANGE = .FALSE.
LSMCHNG = .FALSE.
LWINDSET = LOLDWIND
LWIND = .FALSE.
C
RETURN
END
|
