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revision 1.1597 by mlosch, Tue Feb 14 14:53:17 2012 UTC revision 1.1623 by jmc, Thu Mar 15 20:42:56 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 pkg/seaice: remove (almost) all divisions by constants within loops  o model/src: solve_*diagonal.F
8    in seaice_growth.F and seaice_solve4temp.F     - replace division with multiplication by inverse (similar to original version)
9  o pkg/seaice :       update output of AD exp. global_ocean.90x40x15.
10    - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula.EQ.     - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
11    1 or 2, using newly added run time parameter SEAICE_availHeatTaper.       to enable the use of the vectorized & differentiable solve_tridiagonal.F
12       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
13         vertical advection (to get solve_tridiagonal tested in AD mode).
14    o pkg/seaice: ECCO-CLIVAR merge:
15      1. seaice AREA relaxation
16         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
17         * runtime flag: SEAICE_tauAreaObsRelax
18      2. modified global mean cost imbalance code: CPP option
19          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
20    o another iteration on solve_*diagonal.F
21       Make choices independent of AUTODIFF
22       Default will be the adjoinable vectorized version.
23       Alternative choices are:
24       * non-adjoinable original version with low memory footprint:
25         #define SOLVE_DIAGONAL_LOWMEMORY
26       * still adjoinable but does not vectorize (k as inner-most loop):
27         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
28    o testreport
29     - add option to use a home made wrapper around "make"
30     - remove MITGCM_IEEE env. variable (no longer active)
31    o pkg/shelfice
32     - improve computation of friction velocity for velocity dependent
33       exchange coefficients: include velocities into SHELFICEBoundaryLayer
34       block to average velocities vertically
35     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
36    o Modify diagonal solvers, now three versions (upon request):
37      #ifndef SOLVE_DIAGONAL_AUTODIFF
38        1. default version (dating back a while ago)
39      #else /* def SOLVE_DIAGONAL_AUTODIFF */
40      # ifdef SOLVE_DIAGONAL_KINNER
41        2. adjoinable version with k-innermost loop (G. Forget)
42      # else
43        3. adjoinable vectorized version of 2.
44      # endif
45      #endif /* SOLVE_DIAGONAL_AUTODIFF */
46      All flags are currently set within routines, but could/should be moved to CPP-options.
47      Array bounds for 1. are as before, for 2.,3. cover the entire domain
48      (could be changed for 1. too).
49    o verification/lab_sea (fwd):
50      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
51        use 7 categories (except hb87), new solve4temp params (except salt_plume),
52        constant salinity (=4) or variable salinity (salt_plume) done through
53        SItracer.
54    o pkg/seaice:
55      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
56      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
57         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
58        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
59        SEAICE_freeze got retired) but already better than previously with
60        SEAICE_freeze=123456.7 deg.C;
61      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
62        (safer multi-threaded setting); always set SEAICEuseEVP;
63      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
64        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
65        stop if multiple specifications for the same coeff; make sure default
66        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
67    o pkg/obcs:
68      - allow to switch to upwind 1rst order advection scheme for the advective
69        flux computation at the open-boundary; disabled for adjoint built.
70    o pkg/ptracers:
71      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
72      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
73      - add parameter to decide when to start a tracer; use internal flag to
74        know which tracer to step-forward; switch this internal flag at the top
75        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
76        for adjoint built.
77    o pkg/seaice:
78      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
79      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
80      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
81    o pkg/ecco:
82      - fix writing of output file DiagnosCost_ClimSalt/Theta
83        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
84    o pkg/seaice:
85      - add missing initialisation of COR_ICE array in dynsolver.F
86      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
87        compiled either way, and is tested in all exps (multidim was only tested
88        in lab_sea ad before).
89      - cosmetic change to prepare for future addition of ITD. no change to results.
90        no defaults change.
91      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
92      - by lack of adequate verification experiments, I further used custom versions
93        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
94        should be correct.
95      - avoid recomputations in ad.
96    o array initialisation in adjoint mode:
97      1) pkg/mom_common/mom_calc_ke.F:
98        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
99        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
100        part this initialisation is gone, resulting in Floating Point Exception
101        (caught by open64 compiler with debug option).
102      2) model/src/convective_weights.F
103        set output convectCount over the full array range (instead of doing
104        an update): this fix a similar issue when called within recomputation (adjoint)
105        which could by-pass the initialisation (normally done in the caller S/R).
106    o pkg/seaice:
107      - final version of turbulent flux params, as agreed at MIT ice meet:
108           SEAICE_mcPheePiston (default is ~ 0.000875)
109           SEAICE_mcPheeTaper (default is 0.)
110           SEAICE_frazilFrac (defualt is 1.)
111           SEAICE_mcPheeStepFunc (default is false)
112      - changes results at trunction error level
113      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
114    o added pkg/frazil:
115      - see frazil_description.tex for details
116      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
117    o pkg/shelfice/shelfice_thermodynamics.F
118      - fix exponents for velocity dependent exchange coefficients: change
119        from 2/3(=0) to 0.66666666666666667
120      - move computation of velocity dependent exchange coefficients into
121        separate loop, so that it applies to both thermodynamics
122      - move some divisions by constants out of loops
123    
124    checkpoint63j (2012/02/16)
125    o pkg/seaice:
126      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
127      - SItracer:  added run time params, and allow coupling to ocn salinity.
128    o pkg/seaice: remove (almost) all divisions by constants within loops
129      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
130      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
131      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
132      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
133    o pkg/seaice :
134      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
135        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
136    - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.    - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
137    - add permanent SItflux diag that corresponds to TFLUX but includes    - add permanent SItflux diag that corresponds to TFLUX but includes
138    ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.      ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
139    - allow activation/testing of a fix for suspected missing term in    - allow activation/testing of a fix for suspected missing term in
140    ocn-ice heat budget (to be confirmed). To test this, you want to      ocn-ice heat budget (to be confirmed). To test this, you want to
141    undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param      undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
142    SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.      SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
143    - no change in results, fwd or ad.    - no change in results, fwd or ad.
144  o global_ocean.cs32x15/results: three changes following from the pkg/seaice commit below.  o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
145    - switch to variable freezing point.    - switch to variable freezing point.
146         Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.         Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
147    - bug fix : the sublimation term that was missing is now activated.    - bug fix : the sublimation term that was missing is now activated.
148         Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.         Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
149    - bug fix : flooding sign term for SIsal0.NE.0.    - bug fix : flooding sign term for SIsal0.NE.0.
150         Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.         Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
151  o pkg/seaice:  o pkg/seaice:
152    - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT    - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
153   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
154   SEAICE_tempFrz0    = -1.96,      with SEAICE_tempFrz0    = -1.96,
155   SEAICE_dTempFrz_dS = 0.,           SEAICE_dTempFrz_dS = 0.,
156    - 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)
157    - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.    - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
158    - 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
159   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.
160    - 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)
161   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).
162    - 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
163   seaice_growth r149 for legacy branch (no results change).      seaice_growth r149 for legacy branch (no results change).
164    - 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
165    - results did not change except for global_ocean.cs32x15, mostly due to the switch      from I. Fenty).
166    to variable freezing point (see above item for detail).    - results did not change except for global_ocean.cs32x15, mostly due to the
167        switch to variable freezing point (see above item for detail).
168  o pkg/thsice:  o pkg/thsice:
169    - fix and simplify interface to salt_plume pkg ; diagnose directly amount of    - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
170      seawater freezing in thsice_calc_thickn (not used).      seawater freezing in thsice_calc_thickn (not used).
171  o pkg/seaice: turbulent flux term specification via run time params.  o pkg/seaice: turbulent flux term specification via run time params.
172    - replace CPP switches with run time switches to facilitate testing    - replace CPP switches with run time switches to facilitate testing
173    - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX, GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR    - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
174                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
175    - added runtime parameter : SEAICEturbFluxFormula    - added runtime parameter : SEAICEturbFluxFormula
176    - move Mcphee constants to SEAICE_PARAMS.h    - move Mcphee constants to SEAICE_PARAMS.h
177    - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;    - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
178      SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply); remove               SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
179      seaice_summary call (moved to seaice_init_fixed)               remove seaice_summary call (moved to seaice_init_fixed)
180    - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on    - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
181      SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)      SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
182    - 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
183    - seaice_check.F : check range; inform and stop if retired CPPs are used (incl. SEAICE_AGE).                         and SITRACER.
184      - seaice_check.F : check range; inform and stop if retired CPPs are used
185                         (incl. SEAICE_AGE).
186    - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without    - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
187          CPP switch, same computation as before for the different options.           CPP switch, same computation as before for the different options.
188    - change results at the truncation level.    - change results at the truncation level.
189  o pkg/seaice:  o pkg/seaice:
190    - 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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