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revision 1.1308 by gforget, Thu Oct 7 22:47:57 2010 UTC revision 1.1334 by jmc, Fri Nov 12 03:18:25 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 model/src, coriolis setting:
8      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
9        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
10        files (selectCoriMap=3) with any grid.
11      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
12    o pkg/seaice/seaice_growth.F:
13        a few cosmetic changes that reduce the number of lines of code
14    o pkg/obcs: add boundary conditions following Stevens (1990)
15      - the code follows old MOM/NAOSIM code
16      - so far it is only implemented for the eastern and western boundaries
17        and NOT for pTracers
18    o pkg/rbcs:
19      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
20        beginning of the first rbcs forcing period.
21      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
22        offline package, i.e., one file per time, labeled by iteration number;
23        deltaTrbcs sets the timestep with which the data was generated;
24        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
25      - rbcsForcingCycle=0 makes forcing non-cyclic.
26      - make arithmetic safe for negative times and odd forcing periods.
27    
28    checkpoint62n (2010/11/09)
29    o pkg/seaice:
30        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
31    o pkg/obcs:
32       New S/R to copy tracer value from the OB location to narrow band region
33        (width = same as overlap) beyond the OB: preserve OB value (needed for
34        high-order scheme) which were overwritten by EXCH call if in overlap
35        region. Applied to theta, salt, ptracer and advected seaice variables.
36       With seaice: use maskInC in similar way as in gad_advection.F,
37        in seaice_advection.F and advect.F.
38       Update output of experiment seaice_obcs and change exp4 to test OBCS with
39        4th order Adv.Scheme. for pasive salt and ptracer.
40    o tools/genmake2:
41      - when looking for an optfile (not specified), only search for Fortran compiler
42        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
43      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
44        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
45      - set default for CPP to "cpp -traditional -P" (was the case without specifying
46        an optfile, but otherwise default was just "cpp".
47      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
48      - when "CC" is not set in the optfile, look for possible C compiler
49        (instead of just setting CC=cc)
50      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
51        => add a ".F" to ".o" rule for source files with no "#include" (such as
52           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
53      - move gfortran before g77 in list of possible Fortran compiler (consistent
54        with reference compiler switch from g77 to gfortran)
55    o pkg/seaice:
56      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
57        seaice_check that stops the model, when the CPP flag is used.
58      o seaice_growth.F: make capping of ice volume conserving by returning the
59        capped ice as freshwater to EmPmR. This does not change the verification
60        experiments but will change runs where the capping is acutally active
61    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
62      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
63         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
64         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
65    o tools/genmake2:
66      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
67      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
68      - clean previous genmake log files before anything else.
69      - change Makefile to remove testreport log files (*.tr_log) and genmake log
70        files only with "CLEAN" target (instead of "Clean");
71    o pkg/generic_advdiff:
72      Change OBCS in multiDim advection (gad_advection.F):
73       Use maskInC to prevent intermediate update of tracer-field in OB regions,
74       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
75       which were applying future time-step OB values.
76      This way, all explicit calculations use current-time-step OB values
77       (simpler and more consistent).
78      Affects results when set-up uses time-varying OBC and multi-dim advection;
79       update output of experiment seaice_obcs.
80    o pkg/seaice:
81      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
82       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
83         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
84      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
85       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
86       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
87    o pkg aim (2010/10/26):
88      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
89        formulation with obliquity, eccentricity, ... as run-time parameters,
90      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
91        upward shortwave radition at the surface (all-sky and clear-sky).
92    o pkg/obcs:
93      - writing sections with globalFiles=T does not work: switch to tiled-files
94        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
95      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
96      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
97    
98    checkpoint62m (2010/10/21)
99    o pkg/seaice: vectorize seaice_solve4temp.F
100      - move iterations loops outside of i/j-loops
101      - requires 2D arrays for TB and effConduct
102      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
103        modified in this routine
104      - a little bit of clean up, adjusting indentation, etc.
105      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
106        performance and '**TWO' by '**2' (because TWO is a float),
107        replaced ONE, ZERO
108    o eesupp/src:
109       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
110    o pkg/seaice/seaice_growth.F
111      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
112      merging process. The merged routine has two branches, and one activates the 'evolution'
113      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
114      In summary, here is what the '10/10 revision' did consist of
115        part 1: seaice_growth.F revisions 1.71 to 1.75
116          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
117            The emphasis here was on improving readability (e.g. by trying to use meaningful
118            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
119        part 1.5:
120          - revising the lab_sea experiment to make it a more useful (i.e. stable
121            and representative of an actual model run). This was done by generating a
122            (winter) pickup to start from, switching back the main experiment dynamic
123            solver from evp to lsr, having one of the experiments use the free drift solution.
124        part 2: seaice_growth.F revisions 1.76 to 1.85
125          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
126          - Sorting out the various fields units and sign (set early on and reset at the end)
127            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
128            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
129          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
130            and simplifying logical expressions to further improve readibility.
131        part 3: seaice_growth.F revisions 1.86 to 1.89
132          - Re-organize the blocks of code more logically.
133          - Merging the '_if.F' pieces that add something new.
134    o pkg/thsice:
135      - vectorize thsice_solve4temp and thsice_get_exf.
136        Problem: thsice_solve4temp has an unvectorizable statement that
137        might also be problematic for TAF
138      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
139        does not change the verifcation experiment, but will change all
140        experiments that have this flag undefined (not tested in verification);
141        a little reorganization to save a few 2D fields and recomputations
142      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
143      - 2nd step:  fix some store dirs
144        o seems to work somewhat, i.e. using ifort but not g77
145        o likely cause are incomplete init. or recomputation
146        o start verification/global_ocean.cs32x15/input_ad.thsice
147    o pkg/obcs: add support for exch2
148      - the position of the boundary and prescribed values are specified using
149        a global domain with exch2 facets stacked
150        - in x for N,S boundaries (like W2_mapIO=-1)
151        - in y for E,W boundaries (so E,W boundaries do not overlap)
152    o pkg/mdsio: add support for writing global sections with exch2
153        file layout is as for obcs described above:
154        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
155        - for y-z sections, facets are stacked in y
156    o pkg/thsice:
157       - change a few routines for better vectorization: thsice_albedo.F,
158         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
159         not affected, but in particular the latter routine has changed
160         dramatically (not necessarily easier to read now).
161       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
162       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
163  o verification/lab_sea:  o verification/lab_sea:
164    - overhaul of the forward model experiments. The main motivation    - overhaul of the forward model experiments. The main motivation
165      for this revision is that lab_sea has proven quite fragile (when      for this revision is that lab_sea has proven quite fragile (when
166      changing the sea-ice code, and switching platforms) to a point      changing the sea-ice code, and switching platforms) to a point
167      when failures were very hard to attribute to specific code problems.      when failures were very hard to attribute to specific code problems.
168    - the suspected reason for this fragility is noise amplification by evp so,    - the suspected reason for this fragility is noise amplification by evp so,
169      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.
170    - the input.lsr experiment thus became obsolete and was removed.    - the input.lsr experiment thus became obsolete and was removed.
171    - it was replaced with the input.fd experiment that uses an    - it was replaced with the input.fd experiment that uses an
172      analytical "free drift" solution as the ice velocity field.      analytical "free drift" solution as the ice velocity field.
173    - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)    - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
174      will hopefully allow us to discriminate problems due to dynamic solvers      will hopefully allow us to discriminate problems due to dynamic solvers
175      from problems due to the thermodynamic code. input.salt_plume (lsr) allows      from problems due to the thermodynamic code. input.salt_plume (lsr) allows
176      us to test additional options, along with the salt plume package.      us to test additional options, along with the salt plume package.
177    - 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
178      make the tests more representative of an actual model run. Previously      make the tests more representative of an actual model run. Previously
179      the tests starting point was a 1m thickness of ice everywhere.      the tests starting point was a 1m thickness of ice everywhere.
180  o pkg/seaice:  o pkg/seaice:
181    - introducing S\R seaice_freedrift.F that compute the    - introducing S\R seaice_freedrift.F that compute the
182      analytical solution to an approximate ice momentum      analytical solution to an approximate ice momentum
183      equation (i.e. the simple stress/coriolis balance).      equation (i.e. the simple stress/coriolis balance).
184    - define SEAICE_ALLOW_FREEDRIFT to trigger the computation    - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
185      of the free drift velocity field, and enable its use.      of the free drift velocity field, and enable its use.
186      To actually use the free drift solution as the model ice      To actually use the free drift solution as the model ice
187      velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.      velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
188  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"
189    
190  checkpoint62l (2010/10/04)  checkpoint62l (2010/10/04)
# Line 349  o tools/build_options: Line 505  o tools/build_options:
505      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
506  o pkg/ecco  o pkg/ecco
507    - allow user defined cost function contributions    - allow user defined cost function contributions
508          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
509          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
510    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
511        the two options are complementary.        the two options are complementary.
512  o pkg/smooth  o pkg/smooth

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