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revision 1.755 by mlosch, Thu Dec 14 08:39:57 2006 UTC revision 1.859 by jmc, Fri Aug 17 20:51:27 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
8    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
9       at face corners.
10    o pkg/generic_advdiff:
11     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
12      loop range indices for computing vertical advection tendency
13      and do the calculation in the interior only (no overlap) ;
14      for now, only implemented for SOM advection (to save CPU time).
15     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
16    o exch2 adjoint
17      First set of changes:
18      - add exch2 hand-written adjoint templates
19      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
20        This will require cleanup in pkg/autodiff/*.F
21        (changed routines currently kept separate in verif. code/)
22      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
23        that used to hide exch2 or cubed-sphere specific code
24        (commented via 'cph-exch2')
25    o pkg/seaice
26      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
27    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
28       output of global_ocean.cs32x15.thsice .
29    
30    checkpoint59e
31    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
32      for B-grid vector (not yet tested) and C-grid vector (<- only used
33      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
34    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
35      (#ifdef ALLOW_SALT_PLUME)
36    o gather_2d/scatter_2d: removed halo regions
37    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
38      scheme and the corresponding test case (under front_relax dir). For now,
39      only available with Skew-flux form and not yet tested in realistic set-up.
40      adjoint: store directives updated, but gradient checks deteriorated,
41      so maybe GM/Redi adjoint is now broken.
42    o seaice adjoint
43      * add AREA, HEFF, HSNOW as control variable
44        (should not change lab_sea results)
45      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
46    o pkg/seaice:
47      * added computation of saltFlux in seaice_growth;
48        For time being, sea ice salinity is assumed constant
49        contribution of snow flooding to freshening of sea ice is neglected.
50        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
51        defaults to 0.0 in order to maintain backward compatibility.
52        Typical values for SEAICE_salinity are 4 to 10 g/kg.
53      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
54      * added SEAICE_availHeatFrac, which specifies fraction of surface level
55        heat content used to melt or grow ice
56      * commented out cap of HICE: it helps keep ice thinner
57      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
58      * applied OBCS T/S mask to HEFFM sea ice mask
59    
60    checkpoint59d
61    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
62     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
63     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
64    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
65     and change default value of parameter "GM_Small_Number";
66     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
67       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
68       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
69    o pkg/ecco: cost function when applying pkg/smooth to controls
70    o pkg/ctrl: add forcingPrecond run time parameter
71    o pkg/seaice:
72     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
73     - fix bug in metric terms of u-equation in LSR solver (implicit part),
74       changes verification/lab_sea
75     - rearrange implicit part of u-equation in LSR solver to make it easier to
76       read, understand, and debug. This causes changes at the truncation level.
77     - fix (serious) bug in the boundary conditions (sign error in the implicit
78       part) of the LSR solver. Changes all LSR results.
79     - fixed problem with HSNOW initialization to avoid thick snow when AREA
80       is initilized with small values - does not change lab_sea results.
81     - added HsnowFile initialization capability
82    o pkg/smooth: addition to model/src and pkg/ctrl so allow
83     initialization of pkg/smooth and application to control vector
84    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
85    o dependencies: pkg/profiles requires pkg/cal
86    o pkg/profiles:
87     - added option ALLOW_PROFILES_GENERICGRID
88         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
89         that interpolation information (grid points and coefficients) is provided
90         within the netcdf input files.
91         -> sample matlab scripts can be found in MITgcm_contrib/gael
92         that allow you to prepare netcdf input files.
93     - also modified: cleaner include statements, cleaner error print statements,
94       cleaner stops when error, and more tests of the netcdf input files consistency.
95    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
96    o pkg/seaice:
97     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
98       requires a new routine: seaice_diagnostics_fill.F
99     - make sure that seaice does not move if not forced (pressure replacement
100       method, Hibler and Ip, 1995), changes results
101     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
102     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
103       It is turned off by default (=-1.), because it changes the results.
104     - make it possible to read AREA from a file, too.
105    
106    checkpoint59c
107    o add S/R and diagnostics for oceanic mixed-layer depth
108    o move GMRedi call after all vertical mixing schemes (including KPP)
109    o pkg/thsice:
110     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
111      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
112    o pkg/obcs:
113     - bug fix for balance code
114    o pkg/seaice:
115      - allow values of SEAICE_elasticParm > 1
116      - add new parameter SEAICE_evpTauRelax as an alternative
117        to SEAICE_elasticParm
118      - make lsr boundary conditions free slip (by default), changes result
119      - add code for no slip boundary conditions for lsr
120      - set minimum of zeta to zero (and not 4e8) (changes results)
121      - add a cap on AREA after advecting AREA if seaice_growth is not called
122    o change calculation of Visbeck K:
123      - no longer depend on tapering scheme; instead, compute slope (limited
124        by GM_maxSlope). this is equivalent to what was comuted before with
125        clipping or linear tappering.
126      - fix vertical averaging (wrong by 1/2 level)
127      - leave the old version (but will not be maintained) within
128        #ifdef OLD_VISBECK_CALC / #endif
129      - update output of exp. ideal_2D_oce
130    o change error catch in calc_r_star to improve vectorization
131    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
132      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
133    o adjoint:
134      Re-organized adjoint checkpointing according to Matt Mazloff
135      (but with modifs/completions/cleanups)
136      Storing is now bundled into large arrays to optimized I/O
137      (and second step in cleanup of the_main_loop)
138    
139    checkpoint59b
140    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
141      - export/import (between ocean & coupler) fields needed for ocean DIC.
142    o pkg/seaice:
143      - get rid of three more exchanges seaice_calc_viscosities (required
144        different loop boundaries in seaice_lsr and seaice_ocean_stress)
145      - bug fix in seaice_ocean_stress (update of lab_sea required)
146      - reduce loop boundaries to necessary minimum also in seaice_evp
147      - go back to the old way of computing deltaC/Z as the adjoint likes that
148        better
149    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
150      passive tracer to an Age Tracer) + update output.txt
151    o pkg/exf:
152      - implement A-grid / C-grid selection for wind-stress input files.
153      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
154      for now, in exf_bulk_largeyeager04.F only :
155      - change implementation for case where windspeed + 2. components wind-stress
156        are read-in. AND use rhoConstFresh to convert evap.
157    o pkg/seaice:
158      - use correct EXCH_UV for wind-forcing (on A-grid).
159      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
160        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
161    o pkg/exf:
162      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
163      EXF_INTERPOLATION:
164      - merge global_with_exf/code version of exf_interp_read.F
165        to the main code ;
166      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
167        reading the file ; Important: This options needs to be defined to recover
168        previous code.
169        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
170      - no longer loose real*8 precision along the way when using exf_iprec=64.
171    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
172      - change discretisation of evp-solver in order to avoid another exchange
173        (changes lab_sea) and clean up a little
174      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
175        help the adjoint (this also changes the results slightly)
176      - add a few "_d 0" where they had been missing in seaice_evp.F
177      - cleaning up: remove unused seaice_calc_rhs.F
178    o pkg/exf: some cleaning-up:
179      - change various "constants" into runtime parameters
180      - cleaned-up Large&Yeager04 routine which should eventually
181        replace exf_bulkformulae.F (changed names of S/R and CPP)
182        and merged various ALLOW_ATM_WIND options
183     only used with thsice pkg (in thsice_get_exf.F):
184      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
185        which are used when useStabilityFct_overIce=TRUE (= the default)
186      - change default values of ice & snow emissivity and scale downward LW
187        by ice & snow emissivity.
188    o pkg/thsice:
189     fix few little problems, in thsice_calc_thickn.F:
190      - growth vertically (and not laterally) if iceFrac == iceMaskMax
191      - melt only laterally if hIce < hThinIce (as the comments say)
192      and in thsice_extend.F:
193      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
194      - start to form ice as soon as the minimum ice-volume is reachable.
195     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
196      and cpl_aim+ocn
197    o pkg/kpp
198     - move computation of surface related input fields to KPP into a new
199       subroutine kpp_forcing_surf.F
200     - remove wrong (within bi,bj loops) EXCH calls.
201     - little cleaning (add argument myThid in last position, cvs header ...)
202     - for now, fix conservation problem by exchanging KPPviscAz (may not
203       be the best fix)
204    o pkg/seaice
205     - check for inconsistent evp parameter/cpp-flag combination
206     - remove leftover errIO flat for obsolete name list error handling
207    o OpenAD
208     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
209    
210    checkpoint59a
211    o pkg/seaice: some parameter clarifications and a little bit of clean up
212    o pkg/thsice: rename run-time parameters:
213       himin       -> hIceMin
214       himin0      -> hThinIce
215       hihig       -> hThickIce
216       i0          -> i0swFrac
217       transCoef   -> bMeltCoef
218       frac_energy -> fracMelting
219      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
220       with default values (for now) that do not change the results.
221      remove old version of thsice vars advection in pkg/seaice.
222    o in FFIELDS.h:
223      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
224      - make pLoad & sIceLoad always available (but still only used if
225         ATMOSPHERIC_LOADING is #define).
226    o pkg/kpp: replaced _KPP_RL with _RL
227    o bug fixes for vertical diffusivity computations when both KPP and
228        3D diffusivity arrays are used.
229    o pkg/seaice: fix bug in evp solver, while doing that
230      - change (improve?) discretization of stress computations for both
231        cgrid-lsr and evp solver
232      - add a new routine to compute strain rates
233      - the above changes lab_sea results
234      - add no slip conditions for evp solver (off by default), lsr-version
235        may follow
236      - fix exchange for shear at Z-points (does not change lab_sea)
237      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
238        (to force the user to pick a time step since there is not "safe" way
239        of choosing it)
240      - add principal stress diagnostics
241      - rearrange fields for evp a little to avoid having to call a: too many
242        exchanges and b: exchanges for stress trensor components which we do
243        not have.
244      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
245        of evp, complete rewrite for lsr case (latter is does not yet work
246        in all cases)
247    o pkg/kpp: add code to have mixing in shelf ice caverns
248      - add myThid to all kpp routines (long overdue)
249    
250    checkpoint59
251    o pkg/exf:
252      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
253        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
254      - move exf header files from lower_case.h to UPPER_CASE.h ;
255        add missing cvs Header & Name
256      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
257      - add namelist param. selectStressGridPosition, exf_monFreq
258      - retire many _CLIM routines, and remove data.exf_clim
259        + params moved to data.exf
260        + climsst, climsss now handled by exf_set_gen, i.e.
261          climss?period=0 refers to constant field,
262          climss?period=-12 to monthly forcing
263      - split up namelists in data.exf
264    o pkg/seaice:
265      - remove seaice_exch and seaice_exch_uv
266      - remove superfluous exchange of theta
267      - add myThid to seaice_budget_ocean/ice
268      - add new interface for atmospheric wind forcing (C-grid only)
269        + new routine
270        + two new field (taux, tauy for stress over ice)
271        + removed one global field (DAIRN) for C-grid case only
272    o pkg/thsise
273      - 2nd set of modifs for thsice adjoint in conjunction with exf
274    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
275    
276    checkpoint58y_post
277    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
278      vertical diffusivity, similar to that in MOM4; turned on using
279      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
280      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
281    o Added capability for 3D specification of background vertical diffusion
282      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
283      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
284      "data" file that contains the 3D vertical diffusivity coefficients.
285    o ice dynamics (pkg/seaice) with thsice thermodynamics:
286      - add code within pkg thsice to advect & diffuse sea-ice fields
287      similar to (and will replace) what has been added in  seaice_advdiff.F,
288      but: - conserving Mass, Heat & Salt.
289           - better when using non-linear advection scheme (not yet fully tested)
290           - can also be used in atmospheric set-up (for now, only the diffusion).
291    
292    checkpoint58x_post
293    o IO option for global-file compact format:
294      - add options when generating topology (utils/exch2/matlab-topology-generator)
295      - add I/O capability (pkg/mdsio).
296      - adapt utils/matlab/rdmds.m to read this format.
297      for now long-line format not yet supported by pkg/mdsio (& exch2).
298    o shelfice: add a few diagnostics
299    
300    checkpoint58w_post
301    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
302      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
303      (and replace horiVertRatio in NH code).
304      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
305                         and tutorial_plume_on_slope (sensitive to truncation)
306    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
307      directly to drive seaice model (C-grid only)
308    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
309     - reintroduce computation of wind from stress,
310     - compute tau (in exf_bulkformulae.F) from windstress averaged to
311       mass points to avoid tau = 0
312     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
313    o rdmnc.m: make it work with "global" files created with gluemnc
314    o rdmnc.m : some improvements in dealing with singleton dimension
315      (tested on all testreport mnc output files).
316    o genmake2: disable pkg/profiles if netcdf test fails.
317    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
318    o move call to cal_readparms up to make calendar parameters/variable available
319      to all packages
320    
321    checkpoint58v_post
322    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
323      useDynP_inEos_Zc tested.
324    o pkg/exf: changes to properly interpolate/mask/scale initial fields
325    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
326      and portions thereof.  See read_cs.txt for description and examples.
327    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
328      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
329      following the great-circle arc between those 2 points.
330    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
331      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
332    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
333     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
334     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
335     - still needs work (not working with some options ; efficiency to improve)
336       and serious testing.
337     - use this scheme for temperature & salinity in 2 advection test exp.:
338       advect_xy & advect_xz, respectively.
339    
340    checkpoint58u_post
341    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
342    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
343    o testreport: add option "-skipdir" to skip some test.
344    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
345      momentum calculation.
346    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
347    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
348      remove checkpoint.F and the_correction_step.F (no longer used);
349      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
350    o add option (linFSConserveTr) to correct for tracer source/sink due to
351      Linear Free surface
352    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
353    o pkg/thsice: fix reading mnc-pickups
354    
355    checkpoint58t_post
356    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
357    o pkg/mdsio:
358     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
359       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
360       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
361     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
362     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
363       either MDS_READ_FIELD or MDS_WRITE_FIELD )
364     - new S/R (to replace MDSWRITEMETA), which allows to write more
365       informations (variable names, time ...) to meta files.
366     - modify rdmds.m to give back the meta file content.
367    o pkg/diagnostics: change vertical interpolation to be safer, and more
368       flexible (define p-levels to interpolate to in data.diagnostics);
369      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
370       diagnostic pointer.
371    o pkg/seaice: more cleaning up of seaice_growth, added many comments
372    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
373    o fix multi-category seaice:
374     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
375       SEAICE_MULTICATEGORY
376     - fix short wave heat flux
377    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
378       and allow to use EVP solver. Change forward lab_sea: test both EVP
379       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
380    o Initial check-in of lab_sea adjoint
381      (very similar to natl_box_adjoint/code_seaice)
382      * used C-grid and EVP solver
383      * used KPP, GM/Redi
384      * uses inAdExact=.TRUE.
385      * gradient checks fail for both ADM and TLM
386        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
387        f.d. gradients actually seem more problematic than ADM, TLM gradients;
388        issue is related to forward mismatch between g77 an ifort
389  o pkg/seaice: overhaul of thermodynamics  o pkg/seaice: overhaul of thermodynamics
390   - growth.F and groatb.F are replaced by new routine seaice_growth.F   - growth.F and groatb.F are replaced by new routine seaice_growth.F
391   - budget.F is replaced by two new routines seaice_budget_ocean/ice.F   - budget.F is replaced by two new routines seaice_budget_ocean/ice.F

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