This repository has been archived by the owner on Apr 15, 2024. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 10
/
Copy pathNEWS
7370 lines (4636 loc) · 208 KB
/
NEWS
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
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
* NEWS --- Changes in the Daisy program and libraries -*- outline -*-
This file contains an overview of changes between Daisy releases. When
you upgrade Daisy, it is recommended that you read at least the
headlines of the changes since the last version. For more detailed
information on changes, read the 'ChangeLog' file from the source
release.
* 6.47
** Split 'vS_S' adsorption model into several variants.
We are testing which work and don't work, so don't use them yet.
* 6.46
** New 'erase' top level keyword.
Lets you erase models and parameterizations. Note, to be sure it is
fully erased, you must also erase any parameterization that uses it.
Example:
(erase chemical NH4)
* 6.45
** Experimental 'local' rootdens model.
** New 'use_secondary' parameter in the 'pressure' secondary model.
Set it to false if you want to ue the secondary domain as a way to
make any hydraulic curve bimodal.
** Bug fixes:
*** 'h_aquifer' now properly defined in the 'Groundwater' log.
*** 'B_C_inverse' use 20 um as silt limit.
* 6.44
** New 'Function' type.
Values are "function" models, but the syntax includes both domain and
range units like the PLF.
** Can now generate graphs for PLF values in the reference manual.
Only work on Linux, so disabled by default.
** Bug fixes:
*** Proper column headers for arrays in the 'table' log in more cases.
*** Fix one initialization error for weather.
* 6.43
** Fix bug in the 'table' hydraulic model.
* 6.42
** The 'table' hydraulic model.
New optional 'K_sat' and 'Theta_sat' parameters.
** The 'hydraulic' program.
New 'print_M' parameter.
** New 'GlobRadScale' weather parameter.
Like PrecipScale, but for global radiation.
* 6.36
** New nwaps program for collecting spawn program results.
The nwaps program will collect dlf files with the same name in
different subdirectories, and generate csv files with the result
concatenated, and the subdirectory name prepended each line. Compared
to the dlf files, the combined file will have "out_" prepended, no
header, and the tags and unit lines combined. The resulting csv files
can easily be imported in e.g. Excel, R, or Python.
The nwaps program is intended to be used with the output of the spawn
program.
Apart from the "out_" files, some simple statistics for each dlf files
will bu summaries on "sum_" csv files.
* 6.35
** New spawn program for running multiple programs in parallel.
If you want to run two simulations "p1" and "p2" defined with
"defprogram", write:
(defprogram main spawn (program p1 p2))
(run main)
This works for any number of programs.
This is intended for situations where you need to run many
simulations, such as scenario analysis or monte-carlo simulations.
- Each subprogram is run in a seperate Daisy process.
This means if one program crashes, it won't stop the others.
- Only a limited number of programs will be run in parallel. Once one
finishes, the next is started (if any are left).
- Each subprogram is run in a seperate directory (folder), created by
the spawn program. If the directory already exists, the subprogram
will be skipped.
This means that you can start the same spawn program on multiple
computers sharing a network drive, and the computers will
automatically distribute the work between them (only one computer will
succesfully create the directory[1] and run the program, the rest will
skip it).
An longer example is found as test-spawn.dai in the sample folder.
Some more parameters you usually won't need:
(parallel 4)
Max number of programs to run in parallel. By default, this is
equaivalent to the number of cores in your CPU.
(exe "c:/daisy/bin/daisy.exe")
Daisy executable to spawn for each program. By default, the same as
is running the main program.
(directory p1 p2)
Name of the subfolders to run the programs. By default, the same as
the names of the programs.
(file "setup-p1.dai" "setup-p2.dai")
names of setup files where the programs are found. By default, it
will look in the same setup file as the main program.
(input_directory "..")
Where to look for input files, instead of the current directory (".").
The deafult value is "..", meaning the parent directory, which is where
the main program is found.
[1] In theory... some network file systems allows multiple computers
to create the same directory at the same time, in that case output
will be garbage.
** New instruction for building daisy from source.
Build system now uses "msys2" on Windows.
See https://daisy.ku.dk/about-daisy/code/
* 6.34
** The "markvand" irrigation model should work again.
At least for spring crops.
** New "hyprop" hydraulic model.
This uses the parmaters generated from the "hyprop" equipement from METER.
See https://www.metergroup.com/en/meter-environment/topics/hydrology
It is quites slow though, you will get faster but less accurate
results by using the generated tables.
* 6.32
** You can now limit allocation of assimate to roots
The 'max_WRoot' parameter allows you to stop allocating assimilate to
the roots after the total root mass exceeds some threshold, which may
depend on development stage. E.g.
(sow ("Spring Barley" (Partit (max_WRoot (0 [DS] 1 [Mg DM/ha])
(2 [DS] 1 [Mg DM/ha])))))
* 6.31
** New 'pond_water_to_snow' log variable in bioclimate.
The "Surface water" log includes it.
* 6.30
** New 'surface' component.
The 'Surface' parameter of the default column model now uses this.
The 'default' model implements most of the old functionality of the
'Surface' parameter.
The change may affect custom log parameterizations.
The old surface parameters 'forced_flux' and 'forced_pressure' have
been replaced by 'const_flux' and 'const_pressure' models.
A 'none' parametization of 'cost_flux' with a flux of zero is also provided.
** New 'source_flux' surface model.
This reads the flux values from a file:
(Surface source_flux (source (column (file "inf.ddf") (tag "q_out"))))
The file looks like this:
ddf-0.0 --- inf.ddf
--------
Date q_out
date mm/d
1000-01-01T00:00:00 0.0
1986-12-02T00:00:00 1.0
3000-01-01T00:00:00 1.0
The last value read will be used, unless you set (interpolate true).
* 6.29
** New 'minute', 'second', and 'microsecond' conditions.
Use like:
(defcondition every_10_minute
(and (or (minute 0) (minute 10) (minute 20)
(minute 30) (minute 40) (minute 50))
(second 0)
(microsecond 0)))
** Various fixed to Farquhar photosynthesis and related modules.
Reported by Laura Delhez.
* 6.28
** Temperature now affects release of assimilate from seeds.
This is for the seed release model.
By default, the same function as is used for maintenance respiration
is used:
0.4281 * (exp (0.57 - 0.024 * T + 0.0020 * T * T)
- exp (0.57 - 0.042 * T - 0.0051 * T * T)))
where T is the soil temperature at 1/3 of the root depth.
This is 1 at 20 dg C, and less than 0.5 at 10 dg C. For Danish
conditions this means that release rate for spring crops is much
lower.
You can overwrite it with the T_factor parameter. To get the old
behaviour, specify
(T_factor (0.0 [dg C] 100 [%]) (100.0 [dg C] 100 [%]))
under Seed release.
** More work on the mulch module.
** Bug fixes in snow module.
These fixes are not expected to change results much.
* 6.25
** New 'evaporate_depth' 'mulch' litter parameter.
Set it to limit how far down in litter layer evaporation can happen.
* 6.24
** The FAO_PM pet model for daily data now requires vapor pressure.
It used to wrongly use RelHum if VapPres was not available.
* 6.23
** New 'DensityDSFac' root parameter.
This allows you to modify the effective root density based on
development stage. Normally Daisy will assume the root distribution is
perfectly homogeneous horizontally (for 1D simulations). Right after
emergence, this is a poor assumption, as the distance between the
individual plants is likely larger than the diameter of the root
zone. This parameter allows you to compensate for this by adjusting
the effective root density, user for water and solute uptake.
(defcrop SB "Spring Barley"
(Root (DensityDSFac (0.0 [DS] 0.01 []) (1.0 [DS] 1.0 []))))
The parameter is analogous to the root_homogeneity horizon parameter,
and the two factors are multiplied together when finding the effective
root density.
* 6.22
** New 'Taastrup' cloudiness model.
The ASCE model with Kjaersgaard parameters.
This is now the default cloudiness model.
* 6.19
** Support for root death due to water logging.
A fraction of root zone that is water logged is calculated based on
the new 'water_log_h_limit' and 'water_log_root_limit' parameters, and
can be logged with the "'water_logged' output variable.
Based on this, and addend controled by 'RtDR_water_log_addend' is
added to the root death rate, and then a factor controled by
'RtDR_water_log_factor' is multiplied to the sum.
All of these are part of the Production fixed component.
* 6.18
** You can now log estimated 2D flow as vectors centered in each node.
The vector will be an average of the flow through the edges of the
node, and is not useful for mass balances, but can be used for
visualization. First the z component of he flow will be listed for
each cell, then the x component for each cell.
(deflog "Matrix Water Quiver" column
"The matrix water flux from each node."
(where "${colfid}matrix_water_quiver.dlf")
(when hourly)
(entries (quiver (path column "${column}" SoilWater q)
(spec fixed SoilWater q)
(handle sum)
(dimension "mm"))))
* 6.17
** Litter will now protect against colloid generation.
The Styczen88 has a 'MA' parameter representing litter coverage. This
parameter is now optional, if you leave it out the (possibly dynamic)
value calculated by the litter model will be used instead.
The Morgan98 and Jarvis99 models didn't include protection from mulch
before. Depending on the fields they were trained on, this means they
may now underestimate colloid generation.
* 6.15
** New 'min_pF' parameter in the 'hydraulic' program model.
* 6.14
** New 'FAO56_daily', 'FAO56_hourly', and 'SSOC' bioclimate parameterizations.
The two first will follow FAO56 closer than the old "default" model,
while the later will set parameters associated with the Sun-Shade Open
Canopy SVAT model. We still recommend using the "default" bioclimate
parameterization in most cases.
** Cw2 for each horizon is now in daily.log.
* 6.13
** New 'PenDSFac' and 'PenpFFac' root parameters.
These allow you to change root penetration based on development stage
or soil moisture.
** New 'root_retardation' horizon parameter.
This allows you to change root penetration speed for a specific
horizon.
* 6.12
** Bug fix with new cloudiness models.
* 6.11
** New ghf module for calculating ground heat flux.
Supported models:
const: A constant value.
none: A contastant value of zero.
weather: Read value from weather data (the GHF column, in W/m^2).
old: Based on conductivity and temperature gradient between cell 0 and 1.
surface: Based on conductivity of top soil and temperture gradient with air.
FAO56: 10 % of Rn during day, 50 % during night.
The model is chosen in the default Bioclimate model, with the ghf
paramater.
Examples:
(defcolumn "const" Askov (Bioclimate original (ghf "const" 1 [W/m^2])))
(defcolumn "none" Askov (Bioclimate original (ghf "none")))
(defcolumn "weather" Askov (Bioclimate original (ghf "weather")))
(defcolumn "old" Askov (Bioclimate original (ghf "old")))
(defcolumn "surface" Askov (Bioclimate original (ghf "surface")))
(defcolumn "FAO56" Askov (Bioclimate original (ghf "FAO56")))
* 6.10
** New cloudiness module.
* 6.09
** Changed default value for snow fraction.
Now precipitation is considered 100 % snow below 0 dG C air
temperature, instead of -2 dg C, in accordance with standard practice
for NMI and DMI. See:
E. J. Førland (ed), Allerup, P., Dahlström, B., Elomaa, E., Jónsson,
T., Madsen, H., Perälä, J., Rissanen, P., Vedin, H., and Vejen,
F. (1996): Manual for operational correction of Nordic precipitation
data. Nordic Working Group on Precipitation. First Edition. DNMI,
Report Nr. 24/96, 66 sider.
** Calculation of extraterrestrial radiation updated.
It should now handle small timesteps better. Still based on FAO56, Eq
28. Might cause minor changes to ET0.
* 6.08
** Log to 'NUL' to discard outut (also on UNIX).
** New 'default_h' SoilWater parameter.
Is used for initialization if no other value is specified. The value
will represent soil surface, and then increase with 1 cm per cm
downwards.
** New 'test-cp.dai' and 'test-scn.dai' sample files.
Together, these files demonstrate how to create a hotstart file, and
run multiple scenarios based on that.
* 6.06
** New 'decompose_SMB_pool', and 'decompose_SMB_KM' chemical parameters.
These allow Michaelis-Menten kinetics for biological degradation.
If C is the carbon content in the specified SMB pool, and KM is
the value of the 'decompose_SMB_KM' parameter, a SMB effect f_SMB on
turnover is calculated as
f_SMB (C) = C / (C + KM)
If decompose_SMB_pool is negative, all SMB pools contribute to C.
Note that (decompose_SMB_pool 0) refers to SMB1, and
(decompose_SMB_pool 1) to SMB2.
** New 'T_ref' and 'SMB_ref' chemical parameters.
These scale the temperature effect (f_T) on turnover and the SMB
effect (f_SMB) on turnover to the specified temperature ('T_ref') or
SMB carbon content ('SMB_ref').
T_scale = 1.0 / f_T (T_ref)
SMB_scale = 1.0 / f_SMB (SMB_ref)
The scaled temperature effect (f_Ts) is then
f_Ts (T) = T_scale * f_T (T)
similarly, the scaled SMB effect (f_SMBs) is
f_SMBs (C) = SMB_scale * f_SMB (C)
and it follows that
f_Ts (T_ref) = f_SMBs (SMB_ref) = 1.0
* 6.04
** New '-L' switch: supress daisy.log.
** New 'M_BivG' hydraulic model.
* 5.96
** The Millet and Maize parameterization had a too high specific_LAI.
* 5.94
** Reorganization of chemicals.
'base' is new base class for chemicals.
'FOCUS' model decompose mostly follows FOCUS recommendations.
'default' model still exists, and use traditional PLF for abiotic factors.
'nutrient' base class for C and N.
'C' base classes for carbon.
'DOC' parameterization for dissolved organic carbon.
'N' base class for nitrogen
'MIN' base class for mineral nitrogen
'NO3' and 'NH4' as before.
'DON' parameterization for dissolved organic nitrogen.
The base classes are useful for logging:
("Soil chemical" (chemical MIN))
will log all mineral nitrogen in the soil.
The parameterizations in chemistry-base.dai and chemistry.dai has been
updated, if you have defined your own pesticides they might need to be
updated.
DON/DOC are generated by the experimental 'mulch' module, and not
fully supported yet.
** 'M_vGBS' and 'hypweb': new hydraulic models.
** New NNI_crit and NNI_pot crop partitioning parameters.
These let N status affect partitioning between leaves and
stem. Described in the article below.
** Added "Winter Wheat JG" parameterization.
Described here:
Gyldengren, J. G., Abrahamsen, P., Olesen, J. E., Styczen, M., Hansen,
S., & Gislum, R. (2020). Effects of winter wheat N status on
assimilate and N partitioning in the mechanistic agroecosystem model
DAISY. Journal of Agronomy and Crop Science.
This partitioning ais based on new field experiments and knowledge,
and utilizes the NNI partitioning described above, the NO3_uptake
parameter described further down, as well as the 'Seed' model for
initial growth. This also means that the amount of seed needs to be
specified when sowing.
(sow "Winter Wheat JG" (seed 180 [kg w.w./ha]))
* 5.93
** New 'root_homogeneity' horizon parameter.
The value is multiplied to the effective root density for this
horizon, affecting water and nitrogen uptake. Is will not affect the
root mass, or rhizodeposition.
Set it to a value smaller than 1 to emulate the effect of soil
compaction.
* 5.92
** New 'top' heatrect model.
This force the entire soil profile to have the temperature of the
upper boundary, usually the air temperature. Usuful for a colun
experiment where the column is not isolated.
It only works with 2D setups. Use
(Movement rectangle
(heat top)
to activate.
* 5.91
** New 'litter_washoff_coefficient' chemical parameter.
Control washoff from litter layer, analogue to
'canopy_washoff_coefficient'. Default value is 1, corresponding to
chemical being fully dissolved in the water. This should give
identical results as in version 5.90 and before.
* 5.90
** Made 'with-column' useful for soil tests.
(with-column Andeby
(wait (soil_water_pressure_above (height -10 [cm])
(potential -50 [cm]))))
works now, didn't before.
* 5.89
** You can now stop simulation after specified time.
(stop_when (walltime (seconds 5)))
You can also specify other time units, e.g.
(stop_when (walltime (hours 2) (minutes 10) (seconds 1) (microseconds 16)))
It can be combined with the simulation time based stop condition
(stop 1988 4 1 1)
(stop_when (walltime (seconds 10)))
the simulation will stop when one of the two conditions are fullfiled.
* 5.88
Bug fixes.
* 5.87
** New 'table' hydraulic model.
Reads hydraulic curves from ddf file.
* 5.83
** New 'K_factor' horizon paramater.
The conductivity calculated by the hydraulic model is multiplied by
this number. By default 1.
** New "weather" program.
This deducts the temperature climate parameters used by Daisy weather
files from the data in a Daisy weather file. Example:
(run weather
(weather default "dk-taastrup.dwf")
(begin 1990 1 1 0)
(end 2000 1 1 0))
outputs
TAvarage: 8.19745 dgC
TAmplitude: 8.2344 dgC
MaxTDay: 205 yday
Note that if you have less than 10 years data, you should find the
information from another source. 30 years data is traditional.
* 5.79
** New "at" action.
This action will perform another action at a specified date
(manager activity
(at 2017 3 20 (hour 8) (do (plowing)))
(at 2017 4 5 (hour 8) (do (sow "Spring Barley")))
It is different from
(manager activity
(wait (at 2017 3 20 8) (plowing))
(wait (at 2017 4 5 8)) (sow "Spring Barley"))
in that it will skip actions in the past, instead of waiting
indefinitely. E.g. if you start the simulation the first of April
(time 2017 4 1 8)
the former will skip the plowing and sow the 5th of April, while the
later will wait forever for the simulation to reach the 20 of March
2017.
* 5.74
** Support for converting DS to other models, e.g. BBCH.
You define the conversion like this:
(defcstage "BBCH; Spring Barley" BBCH
;; Format: (DS BBCH message)
(table (0.00 9 "BBCH 09: Emergence")
(0.20 21 "BBCH 21: Beginning of tillering")
(0.42 30 "BBCH 30: Beginning of stem elongation")
(1.03 55 "BBCH 55: Middle of heading")
(1.23 65 "BBCH 65: Full flowering")
(2.00 89 "BBCH 89: Fully ripe")))
and apply it like this:
(sow ("Spring Barley" (CStage "BBCH; Spring Barley")))
This has three effects:
1. During simulation, the messages of the table will be printed each
time DS reached the specified value.
2. The latest stage in the table will be reported in the last column
in the "Crop" log. So in the example above it will stay at 9 until DS
reach 0.20, then change to 21.
3. You can use "crop_stage_after" instead of "crop_ds_after" in
management, e.g.
(wait (crop_stage_after "Spring Barley" 89))
(harvest "Spring Barley")
The default 'cstage' model is just DS and will give a message at DS 0
(emergence), 1 (flowering), and 2 (ripe).
* 5.72
** Fix decompose_rate.
It was multiplied twice, making slow decomposition very slow.
** Default for 'surface_decompose_rate' is canopy_dissipation_rate again.
** New parameter 'soil_affects_surface_decompose'
Default false. If true, surface decomposition is affected by the same
heat, moisture, etc factors as decomposition in the top soil.
* 5.71
** 'enable_surface_products' is now false by default.
* 5.69
** New defaults for 'litter_decompose_rate' and 'surface_decompose_rate'.
The former will now default to canopy_dissipation_rate, while the
later by default will be equal to the decompose rate in the top soil.
The "top soil" is the numerical cells that connects to the surface,
weighted by area.
* 5.68
** Metabolites is now generated on the soil surface.
Set 'enable_surface_products' to false in the chemical definition to
disable.
* 5.66
** New 'EpFactor_SWE' surface parameter.
* 5.65
** New 'modify_DS' phenology parameter.
* 5.64
** New 'depth_factor' to the 'growth' root density model.
* 5.63
** New default models for reference evapotranspiration
If the timestep in the weather file is below 4 hours, Daisy will by
default chose 'FAO_PM_hourly'.
Daisy will now use the 'deBruin87' parameterization of Makkink,
instead of the old 'makkink' model.
** New models calculating reference evapotranspiration
References to each of them can be found in the reference manual.
*** 'FAO_PM_hourly'
A modification of 'FAO_PM' for use with hourly data.
*** 'Makkink'
A generic implementation of the Makkink model. It must be
parameterized after local conditions.
*** 'Makkink57' (low wind conditions)
The original parameterization of the Makkink equation, by Makkink himself.
*** 'AslyngHansen82' (high wind conditions)
A Makkink parameterization based on Taastrup data. This is a different
implementation of the old 'makkink' parameterization.
*** 'deBruin87' (medium wind conditions)
A newer dutch parameterization of Makkink. It is a best fit to modern
Taastrup climate.
You can choose the model by adding this to the Daisy column:
(Bioclimate original (pet deBruin87))
** The 'Freundlich' adsorption model now takes a 'C_ref' parameter.
This is defined in the FOCUS groundwater scenarious report (page 93),
and is mandatory.
* 5.62
** New 'shoot' reaction model.
Allows generation of a chemical on the canopy based on shoot DM and DS
** 'litter_decompose_rate' new chemical parameter.
* 5.60
** New 'use_last' parameter in SoilWater.
Use it to mix measurements and groundwater based initialization of
soil water.
* 5.53
** Short irrigation events will now lower the timestep.
It used to lower the flux as keep the timestep.
* 5.42
** New 'molar_mass' chemical parameter.
This affects metabolites. If both the parent compound and the
metabolite have molar_mass specified, the generated fraction is
assumed to be mole based instead of weight based.
** New Ps_PAR_SWE and Ps_NIR_SWE parameters in sun-shade raddist.
** New svat SSOC epsilon_soil_SWE parameter.
These allows soil water to affect the value. Is is a PLF of pF.
Default value is 1 (no effect).
** svat SSOC epsilon split into epsilon_soil and epsilon_leaf.
default value for soil is 0.95, down from 0.98.
** New 'RubiscoN' component.
For calculating amount of rubisco N in leaves.
** Fix bug in canopy washoff.
** More bug fixes.
* 5.40
** You can now specify the quartz fraction directly.
This is part of the horizon.
(quartz 80 [%])
specifies that 80 % of the minerals in the horizon are quartz.
This affects heat transport.
* 5.31
** Bug fixes and removal of dead or unused code.
** New 'HI' column in harvest log file.
It contains the harvest index.
** New 'sow_object' action.
Works like 'sow', except it cannot be used within a 'repeat' action,
but is is does allow optimizing crop parameters.
* 5.29
** Default tortosity model changed from 'M_Q' to 'linear'.
The linear model is less sensitive to water content for nitrate
uptake, but overall the effect is expcected to be modest.
Add
(Tortosity M_Q)
to your horizons to switch back to the old model.
** New 'NO3_uptake' and 'NH4_uptake' parameters.
By default, 'NH4_uptake' use the same model as 'NO3_uptake', by
default 'fixed_sink'.
For N to move from the soil int the crop, it has to move to the root
surface (by advection or diffusuion), and then enter the roots. The
concentration at the root surface (C_root) is a limiting factor for
both processes.
The old ('fixed_sink') model ignored the limit for entering the roots
(up to a maximum rate), and allowed C_root to be zero in order to
maximize diffusion towards the root surface. The new model
('variable_sink') don't, and instead find a value for 'C_root' where
the two rates are equal.
The new model use a double Michaelis-Menten kinetics to predict the
rate N enter the roots.
I = F1 C_root / (K1 + C_root) + F2 C_root / (K2 + C_root)
K1 and K2 can be specified directly. F1 and F2 are specified
indirectly, through the 'MxNO3Upt' and 'MxNH4Upt' root system
parameter, and the 'F_relative' parameter.
F1 = F_relative * MxNO3Upt
F2 = MxNO3Upt - F1
and similar for NH4 uptake.
The effect of switching to the new model is that N uptake is slower,
especielly for low N concentration is the soil.
* 5.28
** New 'Crop' log parameterization in log-std.dai.
This is a simplified version of "Crop Production", and documented in
the tutorial.
** Bug fixes.
* 5.27
** The 'with' condition allows you to restrict a test to a specific column.
** The 'active' log parameter allows you to conditionally log flux variables.
E.g. only log root uptake when DS > 1.0.
** Fix various units.
* 5.26
** Duplicate definitions are now an error instead of a warning.
** New 'fractiles' summary model.
Calculate fractiles for specific log variables.
(defsummary NYield fractiles
(tags "Matrix-Leaching" sorg_N sorg_DM)
(fractiles 10 50 90 [%]))
** New harvest log variable.
This allows you to add details from the harvest log into normal log files.
(deflog MyHarvest crop
(where "myharvest.dlf")
(when true)
(entries (number (path column "${column}" Vegetation crops
harvest "${crop}" sorg_DM)
(handle content_sum)
(spec fixed Harvest sorg_DM))))
(output (MyHarvest (crop Grass) (when monthly)))
** New 'store_SOM' and 'restore_SOM' management actions.
This will store / restore the state of the SOM pools. Intended use for
long run scenarios to test short term effects of weather without long
term effects of changes to SOM pools.
** Atmospheric 'CO2' can now be specified in weather file.
Currently this is only used in conjunction with the Farquhar
photosynthesis model, where it is required.
* 5.25
** Made duplicate definitions errors instead of warnings.
** Better logging of biopores.
Biopore leaching is now included in the Soil/Field Nitrogen/Chemical
logs, the same way biopore percolation has been included in the
Soil/Field water logs. You can now also seperate drain flow from soil
matrix or biopores, and seperate input and output from biopores,
rather than just the net exchange.
You no longer need to include the bottom of the biopore zone in order
to balance Field nitrogen and Field chemical. You still need to
include the entire root zone though.
* 5.24