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revision 1.1595 by gforget, Mon Feb 13 16:38:08 2012 UTC revision 1.1613 by jmc, Thu Mar 8 17:29:36 2012 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o global_ocean.cs32x15/results: three changes following from the pkg/seaice commit below.  o pkg/ptracers:
8    - switch to variable freezing point.    - rename PTRACERS_RESTART.h -> PTRACERS_START.h
9      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
10      - add parameter to decide when to start a tracer; use internal flag to
11        know which tracer to step-forward; switch this internal flag at the top
12        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
13        for adjoint built.
14    o pkg/seaice:
15      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
16      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
17      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
18    o pkg/ecco:
19      - fix writing of output file DiagnosCost_ClimSalt/Theta
20        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
21    o pkg/seaice:
22      - add missing initialisation of COR_ICE array in dynsolver.F
23      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
24        compiled either way, and is tested in all exps (multidim was only tested
25        in lab_sea ad before).
26      - cosmetic change to prepare for future addition of ITD. no change to results.
27        no defaults change.
28      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
29      - by lack of adequate verification experiments, I further used custom versions
30        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
31        should be correct.
32      - avoid recomputations in ad.
33    o array initialisation in adjoint mode:
34      1) pkg/mom_common/mom_calc_ke.F:
35        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
36        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
37        part this initialisation is gone, resulting in Floating Point Exception
38        (caught by open64 compiler with debug option).
39      2) model/src/convective_weights.F
40        set output convectCount over the full array range (instead of doing
41        an update): this fix a similar issue when called within recomputation (adjoint)
42        which could by-pass the initialisation (normally done in the caller S/R).
43    o pkg/seaice:
44      - final version of turbulent flux params, as agreed at MIT ice meet:
45           SEAICE_mcPheePiston (default is ~ 0.000875)
46           SEAICE_mcPheeTaper (default is 0.)
47           SEAICE_frazilFrac (defualt is 1.)
48           SEAICE_mcPheeStepFunc (default is false)
49      - changes results at trunction error level
50      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
51    o added pkg/frazil:
52      - see frazil_description.tex for details
53      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
54    o pkg/shelfice/shelfice_thermodynamics.F
55      - fix exponents for velocity dependent exchange coefficients: change
56        from 2/3(=0) to 0.66666666666666667
57      - move computation of velocity dependent exchange coefficients into
58        separate loop, so that it applies to both thermodynamics
59      - move some divisions by constants out of loops
60    
61    checkpoint63j (2012/02/16)
62    o pkg/seaice:
63      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
64      - SItracer:  added run time params, and allow coupling to ocn salinity.
65    o pkg/seaice: remove (almost) all divisions by constants within loops
66      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
67      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
68      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
69      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
70    o pkg/seaice :
71      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
72        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
73      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
74      - add permanent SItflux diag that corresponds to TFLUX but includes
75        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
76      - allow activation/testing of a fix for suspected missing term in
77        ocn-ice heat budget (to be confirmed). To test this, you want to
78        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
79        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
80      - no change in results, fwd or ad.
81    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
82      - switch to variable freezing point.
83         Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.         Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
84    - bug fix : the sublimation term that was missing is now activated.    - bug fix : the sublimation term that was missing is now activated.
85         Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.         Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
86    - bug fix : flooding sign term for SIsal0.NE.0.    - bug fix : flooding sign term for SIsal0.NE.0.
87         Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.         Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
88  o pkg/seaice:  o pkg/seaice:
89    - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT    - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
90   is now the default, and the old default constant freezing point is recovered with      is now the default, and the old default constant freezing point is recovered
91   SEAICE_tempFrz0    = -1.96,      with SEAICE_tempFrz0    = -1.96,
92   SEAICE_dTempFrz_dS = 0.,           SEAICE_dTempFrz_dS = 0.,
93    - retire SEAICE_freeze that was the old way of specifycing the constant freezing point.    - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
94    - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.    - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
95    - bug fix (thanks to M. Losch) : the sublimation term that was missing is now    - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
96   activated. To reproduce old results that had this bug define SEAICE_DISABLE_SUBLIM.      activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
97    - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)    - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
98   was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).      was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
99    - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in    - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
100   seaice_growth r149 for legacy branch (no results change).      seaice_growth r149 for legacy branch (no results change).
101    - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code from I. Fenty).    - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
102    - results did not change except for global_ocean.cs32x15, mostly due to the switch      from I. Fenty).
103    to variable freezing point (see above item for detail).    - results did not change except for global_ocean.cs32x15, mostly due to the
104        switch to variable freezing point (see above item for detail).
105  o pkg/thsice:  o pkg/thsice:
106    - fix and simplify interface to salt_plume pkg ; diagnose directly amount of    - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
107      seawater freezing in thsice_calc_thickn (not used).      seawater freezing in thsice_calc_thickn (not used).
108  o pkg/seaice: turbulent flux term specification via run time params.  o pkg/seaice: turbulent flux term specification via run time params.
109    - replace CPP switches with run time switches to facilitate testing    - replace CPP switches with run time switches to facilitate testing
110    - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX, GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR    - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
111                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
112    - added runtime parameter : SEAICEturbFluxFormula    - added runtime parameter : SEAICEturbFluxFormula
113    - move Mcphee constants to SEAICE_PARAMS.h    - move Mcphee constants to SEAICE_PARAMS.h
114    - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;    - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
115      SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply); remove               SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
116      seaice_summary call (moved to seaice_init_fixed)               remove seaice_summary call (moved to seaice_init_fixed)
117    - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on    - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
118      SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)      SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
119    - seaice_summary.F : add missing report of read turbulent flux term set up (and SITRACER).    - seaice_summary.F : add missing report of read turbulent flux term set up
120    - seaice_check.F : check range; inform and stop if retired CPPs are used (incl. SEAICE_AGE).                         and SITRACER.
121      - seaice_check.F : check range; inform and stop if retired CPPs are used
122                         (incl. SEAICE_AGE).
123    - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without    - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
124          CPP switch, same computation as before for the different options.           CPP switch, same computation as before for the different options.
125    - change results at the truncation level.    - change results at the truncation level.
126  o pkg/seaice:  o pkg/seaice:
127    - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:    - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
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