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revision 1.1309 by jmc, Tue Oct 12 13:50:14 2010 UTC revision 1.1338 by mlosch, Mon Nov 22 14:02:02 2010 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:
8      - seaice_growth.F: fix bug in conservation of freshwater connected to
9        capping of heff, put contribution into d_HEFFbyNEG
10      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
11        by something more sensible (parameters that are what their name implies)
12      - change some defaults, so that by default exf-parameters are used for
13        things like rhoAir, cpAir,latent/sensible heat parameters, in order
14        to reproduce the old results, many data.seaice now contain funny values
15        for cpAir and latent heat of sublimation
16    o packages_readparms.F: move exf_readparms up in line so that
17        exf-parameters are visible for other packages (e.g. seaice)
18    o debugMode & debugLevel=2:
19      - differentiate between debugMode & debugLevel=2:
20        debugMode: controls printing of debug messages (sequence of S/R calls).
21        debugLevel: controls printing of algorithm intermediate results and stats.
22      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
23        => allows to print debug-stats without all sequence of call messages.
24      - switch control of debug print from debugLevel to debugMode in many S/R.
25    o pkg/obcs (obcs-sponge):
26        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
27        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
28    o pkg/generic_advdiff:
29      - record overlap minimum size for each advection scheme;
30      - refine criteria on overlap minimum size;
31      - check and stop (in gad_check) if overlap size is too small.
32    o pkg/obcs:
33      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
34        once, in ptracers_implicit.F)
35      - with seaice: remove test on empty file name in obcs_apply_seaice (always
36        apply OB values when tile has OB)
37    o model/src, coriolis setting:
38      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
39        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
40        files (selectCoriMap=3) with any grid.
41      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
42    o pkg/seaice/seaice_growth.F:
43        a few cosmetic changes that reduce the number of lines of code
44    o pkg/obcs: add boundary conditions following Stevens (1990)
45      - the code follows old MOM/NAOSIM code
46      - so far it is only implemented for the eastern and western boundaries
47        and NOT for pTracers
48    o pkg/rbcs:
49      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
50        beginning of the first rbcs forcing period.
51      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
52        offline package, i.e., one file per time, labeled by iteration number;
53        deltaTrbcs sets the timestep with which the data was generated;
54        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
55      - rbcsForcingCycle=0 makes forcing non-cyclic.
56      - make arithmetic safe for negative times and odd forcing periods.
57    
58    checkpoint62n (2010/11/09)
59    o pkg/seaice:
60        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
61    o pkg/obcs:
62       New S/R to copy tracer value from the OB location to narrow band region
63        (width = same as overlap) beyond the OB: preserve OB value (needed for
64        high-order scheme) which were overwritten by EXCH call if in overlap
65        region. Applied to theta, salt, ptracer and advected seaice variables.
66       With seaice: use maskInC in similar way as in gad_advection.F,
67        in seaice_advection.F and advect.F.
68       Update output of experiment seaice_obcs and change exp4 to test OBCS with
69        4th order Adv.Scheme. for pasive salt and ptracer.
70    o tools/genmake2:
71      - when looking for an optfile (not specified), only search for Fortran compiler
72        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
73      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
74        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
75      - set default for CPP to "cpp -traditional -P" (was the case without specifying
76        an optfile, but otherwise default was just "cpp".
77      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
78      - when "CC" is not set in the optfile, look for possible C compiler
79        (instead of just setting CC=cc)
80      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
81        => add a ".F" to ".o" rule for source files with no "#include" (such as
82           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
83      - move gfortran before g77 in list of possible Fortran compiler (consistent
84        with reference compiler switch from g77 to gfortran)
85    o pkg/seaice:
86      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
87        seaice_check that stops the model, when the CPP flag is used.
88      o seaice_growth.F: make capping of ice volume conserving by returning the
89        capped ice as freshwater to EmPmR. This does not change the verification
90        experiments but will change runs where the capping is acutally active
91    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
92      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
93         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
94         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
95    o tools/genmake2:
96      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
97      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
98      - clean previous genmake log files before anything else.
99      - change Makefile to remove testreport log files (*.tr_log) and genmake log
100        files only with "CLEAN" target (instead of "Clean");
101    o pkg/generic_advdiff:
102      Change OBCS in multiDim advection (gad_advection.F):
103       Use maskInC to prevent intermediate update of tracer-field in OB regions,
104       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
105       which were applying future time-step OB values.
106      This way, all explicit calculations use current-time-step OB values
107       (simpler and more consistent).
108      Affects results when set-up uses time-varying OBC and multi-dim advection;
109       update output of experiment seaice_obcs.
110    o pkg/seaice:
111      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
112       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
113         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
114      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
115       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
116       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
117    o pkg aim (2010/10/26):
118      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
119        formulation with obliquity, eccentricity, ... as run-time parameters,
120      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
121        upward shortwave radition at the surface (all-sky and clear-sky).
122    o pkg/obcs:
123      - writing sections with globalFiles=T does not work: switch to tiled-files
124        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
125      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
126      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
127    
128    checkpoint62m (2010/10/21)
129    o pkg/seaice: vectorize seaice_solve4temp.F
130      - move iterations loops outside of i/j-loops
131      - requires 2D arrays for TB and effConduct
132      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
133        modified in this routine
134      - a little bit of clean up, adjusting indentation, etc.
135      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
136        performance and '**TWO' by '**2' (because TWO is a float),
137        replaced ONE, ZERO
138    o eesupp/src:
139       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
140    o pkg/seaice/seaice_growth.F
141      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
142      merging process. The merged routine has two branches, and one activates the 'evolution'
143      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
144      In summary, here is what the '10/10 revision' did consist of
145        part 1: seaice_growth.F revisions 1.71 to 1.75
146          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
147            The emphasis here was on improving readability (e.g. by trying to use meaningful
148            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
149        part 1.5:
150          - revising the lab_sea experiment to make it a more useful (i.e. stable
151            and representative of an actual model run). This was done by generating a
152            (winter) pickup to start from, switching back the main experiment dynamic
153            solver from evp to lsr, having one of the experiments use the free drift solution.
154        part 2: seaice_growth.F revisions 1.76 to 1.85
155          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
156          - Sorting out the various fields units and sign (set early on and reset at the end)
157            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
158            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
159          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
160            and simplifying logical expressions to further improve readibility.
161        part 3: seaice_growth.F revisions 1.86 to 1.89
162          - Re-organize the blocks of code more logically.
163          - Merging the '_if.F' pieces that add something new.
164  o pkg/thsice:  o pkg/thsice:
165     re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops    - vectorize thsice_solve4temp and thsice_get_exf.
166        Problem: thsice_solve4temp has an unvectorizable statement that
167        might also be problematic for TAF
168      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
169        does not change the verifcation experiment, but will change all
170        experiments that have this flag undefined (not tested in verification);
171        a little reorganization to save a few 2D fields and recomputations
172      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
173      - 2nd step:  fix some store dirs
174        o seems to work somewhat, i.e. using ifort but not g77
175        o likely cause are incomplete init. or recomputation
176        o start verification/global_ocean.cs32x15/input_ad.thsice
177    o pkg/obcs: add support for exch2
178      - the position of the boundary and prescribed values are specified using
179        a global domain with exch2 facets stacked
180        - in x for N,S boundaries (like W2_mapIO=-1)
181        - in y for E,W boundaries (so E,W boundaries do not overlap)
182    o pkg/mdsio: add support for writing global sections with exch2
183        file layout is as for obcs described above:
184        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
185        - for y-z sections, facets are stacked in y
186    o pkg/thsice:
187       - change a few routines for better vectorization: thsice_albedo.F,
188         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
189         not affected, but in particular the latter routine has changed
190         dramatically (not necessarily easier to read now).
191       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
192     iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.     iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
193  o verification/lab_sea:  o verification/lab_sea:
194    - overhaul of the forward model experiments. The main motivation    - overhaul of the forward model experiments. The main motivation
195      for this revision is that lab_sea has proven quite fragile (when      for this revision is that lab_sea has proven quite fragile (when
196      changing the sea-ice code, and switching platforms) to a point      changing the sea-ice code, and switching platforms) to a point
197      when failures were very hard to attribute to specific code problems.      when failures were very hard to attribute to specific code problems.
198    - the suspected reason for this fragility is noise amplification by evp so,    - the suspected reason for this fragility is noise amplification by evp so,
199      to start with, we decided to replace evp with lsr in the main experiment.      to start with, we decided to replace evp with lsr in the main experiment.
200    - the input.lsr experiment thus became obsolete and was removed.    - the input.lsr experiment thus became obsolete and was removed.
201    - it was replaced with the input.fd experiment that uses an    - it was replaced with the input.fd experiment that uses an
202      analytical "free drift" solution as the ice velocity field.      analytical "free drift" solution as the ice velocity field.
203    - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)    - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
204      will hopefully allow us to discriminate problems due to dynamic solvers      will hopefully allow us to discriminate problems due to dynamic solvers
205      from problems due to the thermodynamic code. input.salt_plume (lsr) allows      from problems due to the thermodynamic code. input.salt_plume (lsr) allows
206      us to test additional options, along with the salt plume package.      us to test additional options, along with the salt plume package.
207    - Finally a pickup was generated (at the end of a one year run) to    - Finally a pickup was generated (at the end of a one year run) to
208      make the tests more representative of an actual model run. Previously      make the tests more representative of an actual model run. Previously
209      the tests starting point was a 1m thickness of ice everywhere.      the tests starting point was a 1m thickness of ice everywhere.
210  o pkg/seaice:  o pkg/seaice:
211    - introducing S\R seaice_freedrift.F that compute the    - introducing S\R seaice_freedrift.F that compute the
212      analytical solution to an approximate ice momentum      analytical solution to an approximate ice momentum
213      equation (i.e. the simple stress/coriolis balance).      equation (i.e. the simple stress/coriolis balance).
214    - define SEAICE_ALLOW_FREEDRIFT to trigger the computation    - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
215      of the free drift velocity field, and enable its use.      of the free drift velocity field, and enable its use.
216      To actually use the free drift solution as the model ice      To actually use the free drift solution as the model ice
217      velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.      velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
218  o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"  o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
219    
220  checkpoint62l (2010/10/04)  checkpoint62l (2010/10/04)
# Line 352  o tools/build_options: Line 535  o tools/build_options:
535      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
536  o pkg/ecco  o pkg/ecco
537    - allow user defined cost function contributions    - allow user defined cost function contributions
538          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
539          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
540    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
541        the two options are complementary.        the two options are complementary.
542  o pkg/smooth  o pkg/smooth

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