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revision 1.533 by jmc, Tue Aug 16 22:50:56 2005 UTC revision 1.858 by jmc, Thu Aug 16 02:34:16 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 pkg/generic_advdiff:
8     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
9      loop range indices for computing vertical advection tendency
10      and do the calculation in the interior only (no overlap) ;
11      for now, only implemented for SOM advection (to save CPU time).
12     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
13    o exch2 adjoint
14      First set of changes:
15      - add exch2 hand-written adjoint templates
16      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
17        This will require cleanup in pkg/autodiff/*.F
18        (changed routines currently kept separate in verif. code/)
19      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
20        that used to hide exch2 or cubed-sphere specific code
21        (commented via 'cph-exch2')
22    o pkg/seaice
23      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
24    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
25       output of global_ocean.cs32x15.thsice .
26    
27    checkpoint59e
28    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
29      for B-grid vector (not yet tested) and C-grid vector (<- only used
30      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
31    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
32      (#ifdef ALLOW_SALT_PLUME)
33    o gather_2d/scatter_2d: removed halo regions
34    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
35      scheme and the corresponding test case (under front_relax dir). For now,
36      only available with Skew-flux form and not yet tested in realistic set-up.
37      adjoint: store directives updated, but gradient checks deteriorated,
38      so maybe GM/Redi adjoint is now broken.
39    o seaice adjoint
40      * add AREA, HEFF, HSNOW as control variable
41        (should not change lab_sea results)
42      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
43    o pkg/seaice:
44      * added computation of saltFlux in seaice_growth;
45        For time being, sea ice salinity is assumed constant
46        contribution of snow flooding to freshening of sea ice is neglected.
47        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
48        defaults to 0.0 in order to maintain backward compatibility.
49        Typical values for SEAICE_salinity are 4 to 10 g/kg.
50      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
51      * added SEAICE_availHeatFrac, which specifies fraction of surface level
52        heat content used to melt or grow ice
53      * commented out cap of HICE: it helps keep ice thinner
54      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
55      * applied OBCS T/S mask to HEFFM sea ice mask
56    
57    checkpoint59d
58    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
59     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
60     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
61    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
62     and change default value of parameter "GM_Small_Number";
63     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
64       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
65       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
66    o pkg/ecco: cost function when applying pkg/smooth to controls
67    o pkg/ctrl: add forcingPrecond run time parameter
68    o pkg/seaice:
69     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
70     - fix bug in metric terms of u-equation in LSR solver (implicit part),
71       changes verification/lab_sea
72     - rearrange implicit part of u-equation in LSR solver to make it easier to
73       read, understand, and debug. This causes changes at the truncation level.
74     - fix (serious) bug in the boundary conditions (sign error in the implicit
75       part) of the LSR solver. Changes all LSR results.
76     - fixed problem with HSNOW initialization to avoid thick snow when AREA
77       is initilized with small values - does not change lab_sea results.
78     - added HsnowFile initialization capability
79    o pkg/smooth: addition to model/src and pkg/ctrl so allow
80     initialization of pkg/smooth and application to control vector
81    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
82    o dependencies: pkg/profiles requires pkg/cal
83    o pkg/profiles:
84     - added option ALLOW_PROFILES_GENERICGRID
85         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
86         that interpolation information (grid points and coefficients) is provided
87         within the netcdf input files.
88         -> sample matlab scripts can be found in MITgcm_contrib/gael
89         that allow you to prepare netcdf input files.
90     - also modified: cleaner include statements, cleaner error print statements,
91       cleaner stops when error, and more tests of the netcdf input files consistency.
92    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
93    o pkg/seaice:
94     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
95       requires a new routine: seaice_diagnostics_fill.F
96     - make sure that seaice does not move if not forced (pressure replacement
97       method, Hibler and Ip, 1995), changes results
98     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
99     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
100       It is turned off by default (=-1.), because it changes the results.
101     - make it possible to read AREA from a file, too.
102    
103    checkpoint59c
104    o add S/R and diagnostics for oceanic mixed-layer depth
105    o move GMRedi call after all vertical mixing schemes (including KPP)
106    o pkg/thsice:
107     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
108      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
109    o pkg/obcs:
110     - bug fix for balance code
111    o pkg/seaice:
112      - allow values of SEAICE_elasticParm > 1
113      - add new parameter SEAICE_evpTauRelax as an alternative
114        to SEAICE_elasticParm
115      - make lsr boundary conditions free slip (by default), changes result
116      - add code for no slip boundary conditions for lsr
117      - set minimum of zeta to zero (and not 4e8) (changes results)
118      - add a cap on AREA after advecting AREA if seaice_growth is not called
119    o change calculation of Visbeck K:
120      - no longer depend on tapering scheme; instead, compute slope (limited
121        by GM_maxSlope). this is equivalent to what was comuted before with
122        clipping or linear tappering.
123      - fix vertical averaging (wrong by 1/2 level)
124      - leave the old version (but will not be maintained) within
125        #ifdef OLD_VISBECK_CALC / #endif
126      - update output of exp. ideal_2D_oce
127    o change error catch in calc_r_star to improve vectorization
128    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
129      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
130    o adjoint:
131      Re-organized adjoint checkpointing according to Matt Mazloff
132      (but with modifs/completions/cleanups)
133      Storing is now bundled into large arrays to optimized I/O
134      (and second step in cleanup of the_main_loop)
135    
136    checkpoint59b
137    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
138      - export/import (between ocean & coupler) fields needed for ocean DIC.
139    o pkg/seaice:
140      - get rid of three more exchanges seaice_calc_viscosities (required
141        different loop boundaries in seaice_lsr and seaice_ocean_stress)
142      - bug fix in seaice_ocean_stress (update of lab_sea required)
143      - reduce loop boundaries to necessary minimum also in seaice_evp
144      - go back to the old way of computing deltaC/Z as the adjoint likes that
145        better
146    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
147      passive tracer to an Age Tracer) + update output.txt
148    o pkg/exf:
149      - implement A-grid / C-grid selection for wind-stress input files.
150      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
151      for now, in exf_bulk_largeyeager04.F only :
152      - change implementation for case where windspeed + 2. components wind-stress
153        are read-in. AND use rhoConstFresh to convert evap.
154    o pkg/seaice:
155      - use correct EXCH_UV for wind-forcing (on A-grid).
156      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
157        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
158    o pkg/exf:
159      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
160      EXF_INTERPOLATION:
161      - merge global_with_exf/code version of exf_interp_read.F
162        to the main code ;
163      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
164        reading the file ; Important: This options needs to be defined to recover
165        previous code.
166        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
167      - no longer loose real*8 precision along the way when using exf_iprec=64.
168    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
169      - change discretisation of evp-solver in order to avoid another exchange
170        (changes lab_sea) and clean up a little
171      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
172        help the adjoint (this also changes the results slightly)
173      - add a few "_d 0" where they had been missing in seaice_evp.F
174      - cleaning up: remove unused seaice_calc_rhs.F
175    o pkg/exf: some cleaning-up:
176      - change various "constants" into runtime parameters
177      - cleaned-up Large&Yeager04 routine which should eventually
178        replace exf_bulkformulae.F (changed names of S/R and CPP)
179        and merged various ALLOW_ATM_WIND options
180     only used with thsice pkg (in thsice_get_exf.F):
181      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
182        which are used when useStabilityFct_overIce=TRUE (= the default)
183      - change default values of ice & snow emissivity and scale downward LW
184        by ice & snow emissivity.
185    o pkg/thsice:
186     fix few little problems, in thsice_calc_thickn.F:
187      - growth vertically (and not laterally) if iceFrac == iceMaskMax
188      - melt only laterally if hIce < hThinIce (as the comments say)
189      and in thsice_extend.F:
190      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
191      - start to form ice as soon as the minimum ice-volume is reachable.
192     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
193      and cpl_aim+ocn
194    o pkg/kpp
195     - move computation of surface related input fields to KPP into a new
196       subroutine kpp_forcing_surf.F
197     - remove wrong (within bi,bj loops) EXCH calls.
198     - little cleaning (add argument myThid in last position, cvs header ...)
199     - for now, fix conservation problem by exchanging KPPviscAz (may not
200       be the best fix)
201    o pkg/seaice
202     - check for inconsistent evp parameter/cpp-flag combination
203     - remove leftover errIO flat for obsolete name list error handling
204    o OpenAD
205     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
206    
207    checkpoint59a
208    o pkg/seaice: some parameter clarifications and a little bit of clean up
209    o pkg/thsice: rename run-time parameters:
210       himin       -> hIceMin
211       himin0      -> hThinIce
212       hihig       -> hThickIce
213       i0          -> i0swFrac
214       transCoef   -> bMeltCoef
215       frac_energy -> fracMelting
216      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
217       with default values (for now) that do not change the results.
218      remove old version of thsice vars advection in pkg/seaice.
219    o in FFIELDS.h:
220      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
221      - make pLoad & sIceLoad always available (but still only used if
222         ATMOSPHERIC_LOADING is #define).
223    o pkg/kpp: replaced _KPP_RL with _RL
224    o bug fixes for vertical diffusivity computations when both KPP and
225        3D diffusivity arrays are used.
226    o pkg/seaice: fix bug in evp solver, while doing that
227      - change (improve?) discretization of stress computations for both
228        cgrid-lsr and evp solver
229      - add a new routine to compute strain rates
230      - the above changes lab_sea results
231      - add no slip conditions for evp solver (off by default), lsr-version
232        may follow
233      - fix exchange for shear at Z-points (does not change lab_sea)
234      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
235        (to force the user to pick a time step since there is not "safe" way
236        of choosing it)
237      - add principal stress diagnostics
238      - rearrange fields for evp a little to avoid having to call a: too many
239        exchanges and b: exchanges for stress trensor components which we do
240        not have.
241      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
242        of evp, complete rewrite for lsr case (latter is does not yet work
243        in all cases)
244    o pkg/kpp: add code to have mixing in shelf ice caverns
245      - add myThid to all kpp routines (long overdue)
246    
247    checkpoint59
248    o pkg/exf:
249      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
250        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
251      - move exf header files from lower_case.h to UPPER_CASE.h ;
252        add missing cvs Header & Name
253      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
254      - add namelist param. selectStressGridPosition, exf_monFreq
255      - retire many _CLIM routines, and remove data.exf_clim
256        + params moved to data.exf
257        + climsst, climsss now handled by exf_set_gen, i.e.
258          climss?period=0 refers to constant field,
259          climss?period=-12 to monthly forcing
260      - split up namelists in data.exf
261    o pkg/seaice:
262      - remove seaice_exch and seaice_exch_uv
263      - remove superfluous exchange of theta
264      - add myThid to seaice_budget_ocean/ice
265      - add new interface for atmospheric wind forcing (C-grid only)
266        + new routine
267        + two new field (taux, tauy for stress over ice)
268        + removed one global field (DAIRN) for C-grid case only
269    o pkg/thsise
270      - 2nd set of modifs for thsice adjoint in conjunction with exf
271    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
272    
273    checkpoint58y_post
274    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
275      vertical diffusivity, similar to that in MOM4; turned on using
276      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
277      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
278    o Added capability for 3D specification of background vertical diffusion
279      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
280      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
281      "data" file that contains the 3D vertical diffusivity coefficients.
282    o ice dynamics (pkg/seaice) with thsice thermodynamics:
283      - add code within pkg thsice to advect & diffuse sea-ice fields
284      similar to (and will replace) what has been added in  seaice_advdiff.F,
285      but: - conserving Mass, Heat & Salt.
286           - better when using non-linear advection scheme (not yet fully tested)
287           - can also be used in atmospheric set-up (for now, only the diffusion).
288    
289    checkpoint58x_post
290    o IO option for global-file compact format:
291      - add options when generating topology (utils/exch2/matlab-topology-generator)
292      - add I/O capability (pkg/mdsio).
293      - adapt utils/matlab/rdmds.m to read this format.
294      for now long-line format not yet supported by pkg/mdsio (& exch2).
295    o shelfice: add a few diagnostics
296    
297    checkpoint58w_post
298    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
299      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
300      (and replace horiVertRatio in NH code).
301      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
302                         and tutorial_plume_on_slope (sensitive to truncation)
303    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
304      directly to drive seaice model (C-grid only)
305    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
306     - reintroduce computation of wind from stress,
307     - compute tau (in exf_bulkformulae.F) from windstress averaged to
308       mass points to avoid tau = 0
309     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
310    o rdmnc.m: make it work with "global" files created with gluemnc
311    o rdmnc.m : some improvements in dealing with singleton dimension
312      (tested on all testreport mnc output files).
313    o genmake2: disable pkg/profiles if netcdf test fails.
314    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
315    o move call to cal_readparms up to make calendar parameters/variable available
316      to all packages
317    
318    checkpoint58v_post
319    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
320      useDynP_inEos_Zc tested.
321    o pkg/exf: changes to properly interpolate/mask/scale initial fields
322    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
323      and portions thereof.  See read_cs.txt for description and examples.
324    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
325      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
326      following the great-circle arc between those 2 points.
327    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
328      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
329    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
330     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
331     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
332     - still needs work (not working with some options ; efficiency to improve)
333       and serious testing.
334     - use this scheme for temperature & salinity in 2 advection test exp.:
335       advect_xy & advect_xz, respectively.
336    
337    checkpoint58u_post
338    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
339    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
340    o testreport: add option "-skipdir" to skip some test.
341    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
342      momentum calculation.
343    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
344    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
345      remove checkpoint.F and the_correction_step.F (no longer used);
346      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
347    o add option (linFSConserveTr) to correct for tracer source/sink due to
348      Linear Free surface
349    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
350    o pkg/thsice: fix reading mnc-pickups
351    
352    checkpoint58t_post
353    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
354    o pkg/mdsio:
355     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
356       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
357       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
358     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
359     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
360       either MDS_READ_FIELD or MDS_WRITE_FIELD )
361     - new S/R (to replace MDSWRITEMETA), which allows to write more
362       informations (variable names, time ...) to meta files.
363     - modify rdmds.m to give back the meta file content.
364    o pkg/diagnostics: change vertical interpolation to be safer, and more
365       flexible (define p-levels to interpolate to in data.diagnostics);
366      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
367       diagnostic pointer.
368    o pkg/seaice: more cleaning up of seaice_growth, added many comments
369    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
370    o fix multi-category seaice:
371     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
372       SEAICE_MULTICATEGORY
373     - fix short wave heat flux
374    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
375       and allow to use EVP solver. Change forward lab_sea: test both EVP
376       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
377    o Initial check-in of lab_sea adjoint
378      (very similar to natl_box_adjoint/code_seaice)
379      * used C-grid and EVP solver
380      * used KPP, GM/Redi
381      * uses inAdExact=.TRUE.
382      * gradient checks fail for both ADM and TLM
383        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
384        f.d. gradients actually seem more problematic than ADM, TLM gradients;
385        issue is related to forward mismatch between g77 an ifort
386    o pkg/seaice: overhaul of thermodynamics
387     - growth.F and groatb.F are replaced by new routine seaice_growth.F
388     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
389     - move a few global fields out of SEAICE.h into seaice_growth.F and
390       make them 2D (FICE/QNETO/ ...)
391     - remove FO (it is the same as QNETO)
392     - introduce a few local fields to avoid modifying external fields such
393       as atemp, etc.
394    
395    checkpoint58s_post
396    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
397      changed exf_set_gen.F so that
398        genperiod=0 means input file is one time-constant field and
399        genperiod=-12 means input file contains 12 monthly means
400    o CG2D: use pre-computed solver main-diagonal (stored in common block);
401      this affects truncation error ; generate new output file for exp. which
402      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
403        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
404        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
405        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
406        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
407        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
408    o start implementation of deep-atmosphere and anelastic formulation
409    o verification: remove 2nd copy of input files and use script "prepare_run"
410      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
411    o mom_common/vecinv/fluxform: fix a few initialisation isssues
412    o profiles: fix for multithreaded case
413    
414    o diagnostics: rename few diags:
415      s/'PRESSURE'/'RCENTER '/g
416      s/'TICE    '/'oceFreez'/g
417      s/'TAUX    '/'oceTAUX '/g
418      s/'TAUY    '/'oceTAUY '/g
419      s/'SWFLUX  '/'oceQsw  '/g
420      s/DIFx/DFxE/g
421      s/DIFy/DFyE/g
422      and add few ocean-forcing diagnostics:
423      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
424    o modifications to pkg/seaice/growth.F and budget.F, which change results of
425      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
426      as actual snow thickness.  It now refers everywhere to effective snow
427      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
428    
429    checkpoint58r_post
430    o modifications to pkg/seaice/growth.F, which change results of
431      lab_sea experiment: fixes pertain to melting snow over open water, to
432      masking EVAP under sea ice, and to using the correct AREA variable for
433      computations of EVAP, PRECIP, HSNOW, and GHEFF
434    o add ability to read bathy, salt, and theta using MNC (off by def)
435    o add flooding algorithm and advection of HSNOW for pkg/seaice;
436      both are turned off by default and do no change any results
437    o seaice advection with pkg/thsice: a step toward the use of non-linear
438      advection scheme, but #ifdef or commented out for now (requires more EXCH).
439    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
440      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
441      in natl_box (affects results @ truncation level: update output.txt)
442    o multi-threading and IO:
443      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
444      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
445        (needed to work with SingleCpuIO): tested in all verif. exp.
446    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
447      affects the results (but none of the verification test uses this scheme).
448    o Adding some pkg/diagnostics capability to pkg/seaice
449      (will certainly be subject to changes)
450    o ctrl: adding new control variables:
451      lwflux, lwdown, evap, snowprecip, apressure, runoff
452    
453    checkpoint58q_post
454    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
455      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
456      high_res_cube configuration by 4% on Columbia.
457    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
458      add (in global_with_exf/code) a version of EXF_INTERP_READ without
459      dynamical allocation (seems to work in multi-threaded).
460    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
461      single CPU io) so that TAF does not have to see EESUPPORT.h
462    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
463    
464    checkpoint58p_post
465    o obcs: stop if obcs is used with useCDscheme = .true.
466    o shelfice:
467     - fix a sign error so that no slip at shelfice interface works
468     - remove stop for combination non-hydrostatic code and shelfice. That does
469       not mean, that the results are correct, but at least they are numerically
470       stable
471    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
472    o added adjoint exch routined for all exch*3d* routines
473      and updated flow directives
474    
475    checkpoint58o_post
476    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
477      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
478    o change controling S/R for writing pickup file (new S/R do_write_pickup)
479      and clean-up reading/writing of pickup files.
480    o fix local version of read/write pickup (NH part) in rotating_tank/code
481    o simplify EXCH interface:
482     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
483     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
484    o added the regrid package
485    o shelfice:
486     - add a simple boundary layer scheme to reduce noise
487     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
488    
489    checkpoint58n_post
490    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
491       local variable (not in common block).
492    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
493      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
494      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
495        to work with SingleCpuIO.
496    o add "_d 0" to real constant of pkg/cfc subroutines ;
497       update exp. cfc_exemple & tutorial_cfc_offline output files.
498    o multi-threading and IO:
499      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
500        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
501      - barrier before and after reading.
502      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
503      - avoid using MDS_WRITELOCAL for LAND pkg output.
504      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
505        common-block variables ; Allows multi-threading with master-thread IO.
506    o change default MAX_NO_THREADS from 32 to 4 ;
507      and stop cleanly when MAX_NO_THREADS is too small.
508    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
509    
510    checkpoint58m_post
511    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
512       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
513    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
514       keep global_ocean.90x40x15 (for AD testing) with former secondary test
515       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
516    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
517        add MITgcm_tutorials (= code + all the tutorials)
518    o ecco, option to compute cost for total ssh (mean+anom)
519    o consistent with addition of ptracer and ssh in pkg/profiles
520    o profiles: adding ptracer and ssh
521    o testreport: change multi-test output-file name
522      (from output.txt.{name} to output.{name}.txt)
523    o profiles: now ok for mutli-tiles case
524    o seaice: add 4 parameters for different advection schemes for area,
525      (effective) seaice thickness, enthalphy, and snow height. Their default
526      is the standard parameter SEAICEadvScheme
527    o calc_gw:
528     - add cosFacU in zonal viscous flux (harmonic.visc.).
529     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
530       of tutorial_plume_on_slope.
531    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
532    o calc_gw: true flux-form, account for horizontal grid spacing.
533      update rotating_tank results, but not plume_on_slope (affected at
534      truncation level, 11 digits).
535    
536    checkpoint58l_post
537    o calc_gw:
538     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
539     - remove side-drag for now (need to fix it); update plume_on_slope results.
540     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
541    o commit code to make SST/SSS weights spatially variable
542      (based on either variable in-situ or variable initial T/S weights)
543    o pkg/ecco:
544      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
545        now based on horizontally varying weights wthetaLev, wsaltLev
546      * cost_averagesflags now returns year indices in addition to day, month
547      * sflux balance is performed on annual basis
548        (sflxumm, sfluxmm2, bal_sfluxmm)
549      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
550        including separate counting and multipliers
551    o pkg/rbcs
552      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
553    
554    checkpoint58k_post
555    o testreport:
556     - always build in dir. "build" (if not there, mkdir build instead of building
557       & running in input)
558     - run in dir run (if it exists), in build otherwise.
559     - call prepare_run (if input/prepare_run exists)
560     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
561    o pkg/exf modifications to interpolation and rotation routines for more
562       reasonable treatment of North Pole singularity: for tracers North Pole
563       value is set to northernmost zonal-mean value, for zonal velocity it is
564       set to zero, and for meridional velocity it is set to northernmost value.
565    o pkg/exf/exf_check_range.F
566     - add tile index to diagnostics and move stop statement to the very
567       end of the routine.
568    o pkg/diagnostics: (diagnostics_main_init.F)
569      define title of isomorphic variables according to the current config.
570    o pkg/thsice with pkg/seaice dynamics:
571    - fix domain of computation (interior only, required for exf) and do exchanges
572    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
573    o towards a standard way of dealing with multi-threading in MONITOR
574      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
575    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
576       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
577    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
578    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
579    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
580       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
581    o tracer advection:
582     - clean-up and simplify calc_common_factors.F
583     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
584       advection subroutine (but still not used within DST advection S/R)
585    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
586    
587    checkpoint58j_post
588    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
589      from file (collects calls previously in FORWARD_STEP)
590    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
591    o adjoint store dir. adjusted accordingly
592    o genmake2
593      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
594    
595    checkpoint58i_post
596    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
597      on wind stress (SEAICEstressFactor defaults to 1.)
598    o Total number of Timers is finite (<=40): comment out 2 non-essential one
599      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
600    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
601      on CS-grid: no longer loosing mass.
602    o exf & curvilinear-grid: no longer modify longitude xC & xG.
603    o pkg/ggl90: fix sloppy output and fix a bug
604    o pkg/seaice: added SEAICEuseEVPpickup parameter
605      - Set to false in order to start EVP solver with
606        non-EVP pickup files when using SEAICEuseEVP
607      - fix sign error in diffusion in seaice_calc_rhs
608    
609    checkpoint58h_post
610    * Modifications for bottom topography control
611      o replace hFacC by _hFacC at various places
612      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
613      o add non-self-adjoint cg2d_nsa
614      o update autodiff support routines
615      o re-initialise hfac after ctrl_depth_ini
616      o works for 5x5 box, doesnt work for global_ocean.90x40x15
617    * Adding verification for 5x5 box (4-layer) bottom topography control
618    
619    checkpoint58g_post
620    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
621       used for mean seasonal cycle, mean diurnal cycle); add an example
622       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
623    o pkg/ggl90:
624      - add parameter (minimum surface kinetic energy)
625      - fix bug (avoiding division by zero)
626    o couple pkg/thsice to pkg/seaice:
627      - modify advection in seaice to accomodate new scalar fields to be advected
628      - only muliDimAdection scheme work with seaice/thsice
629      - mapping of thsice-variables to seaice-variables, back and forth
630      - does not break the verification experiments, but does not give the
631        desired results either
632    o pkg/seaice
633      - make (default) second order advection a bit less confusing?
634    
635    checkpoint58f_post
636    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
637      to pkg/seaice):
638      - new routines thsice_map_exf and thsice_get_exf provide the interface
639      - add an additional formal parameter to thsice_solve4temp
640    o pkg/exf:
641      - add new fields wspeed, snowprecip (to be able to couple to thsice)
642      - correct Stefan-Boltzmann constant
643      - new parameter for longwave surface emittance
644      - separate some stuff from exf_bulkformulae into new routines  
645        exf_radiation, exf_wind
646      - add new parameters and constants: longwave emissivity for ocean, ice
647        and snow, evaporation parameters over ice
648      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
649        either wind from stress or stress from wind
650    o pkg/thSIce:
651    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
652    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
653       and THSICE_CALC_THICKN
654    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
655    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
656      to make debugging easier.
657    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
658    o pkg/bulk_force:
659      - clean-up comments and parameters ;
660      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
661    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
662      generate new output for test-experiment: aim.5l_cs.thSI
663    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
664      testreport accordingly
665    
666    checkpoint58e_post
667    o SEAICE_CGRID adjoint done
668    o R_STAR adjoint implemented.
669      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
670      * need to sort out init. of h0facc, etc.
671    o Make pkg/profile fully independent of ecco,cost, etc. stuff
672      to be able to use it in pure forward.
673    
674    checkpoint58d_post
675    o upgrade simple test-experiment to tutorial example:
676     step.1: duplicate the experiment and (step.2) will remove the old copy.
677      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
678      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
679      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
680      tutorial_global_oce_biogeo    <- copy of dic_example
681      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
682      tutorial_plume_on_slope       <- copy of plume_on_slope
683      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
684      tutorial_global_oce_optim     <- empty for now (David ?)
685      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
686     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
687    o correct a sign problem in cost_scat.F
688    o obcs and ptracers: fix boundary conditions for advections schemes
689      with larger stencil
690    o thsice adjoint: start
691    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
692      completeness
693    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
694      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
695    o ptracers adjoint:
696      * avoid extensive recomputatations
697      * fix missing re-init. of gptr (missed by TAF)
698    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
699      me to turn off the excessive output to STDOUT that this package produces
700    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
701      and add those terms in Vector-Invariant formulation.
702    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
703      if the control period (xx_hfluxperiod etc) is 0
704    o in profiles pkg, clean routines and fix details
705    o in ecco pkg, reading ssh data:
706      fix problem in case the model does not start at iter0=0
707    o fix mnc-pickup/restart for ptracers
708    o new package prifiles:
709      code to compute profile-based cost by Gael Forget
710      (modifs in ecco, ctrl, autodiff)
711    o Benign bug fix in initialization (spotted by M. Mazloff) of
712      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
713    
714    checkpoint58c_post
715    o adjoint: finish NLFS adjoint and provide reference output in
716      verification/global_ocean.90x40x15/results_ad_nlfs
717    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
718      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
719      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
720      with SEAICE_CGRID defined.
721    o move calendarDumps from "data" to "data.cal" and clean-up the code
722      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
723    o add useEXF & useCAL flags (for now, set in hard-coded way)
724    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
725      (were missing in NH mode, and wrong in quasihydrostatic mode).
726      waiting for Chris updated version of calc_gw to add those CALLs.
727    o fix bug in quasihydrostatic S/R ;
728      add a test for this option: global_ocean.90x40x15.qshyd
729    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
730      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
731    o add on/off flag useOffLine for package OFFLINE
732    o seaice:
733      - modify advection so that it works also on the C-grid
734      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
735        problem in multi-tile runs with C-grid
736      - add flags for clipping ice velocities and/or masking solver forcing
737      - fix drag (ocean on ice) formulation and a bug that caused noise in the
738        C-grid solver
739      - added a few comments to seaice_diffusion.F
740      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
741        are now exclusive)
742      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
743        required re-ordering the code a little:
744       + make DAIRN global variable (defined in SEAICE)
745       + move computation of the viscosities eta and zeta into a new separate
746         routine (because I need to recompute them in seaice_ocean_stress.F)
747    
748    checkpoint58b_post
749    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
750      update output.txt of exp. aim.5l_cs.thSI
751    o various mnc cleanups and improvements:
752      + shrink lookup tables by factor of ~4
753      + better error reporting when running out of lookup space
754      + able to handle longer path/file names (up to 500 chars)
755    o adjoint:
756      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
757      - TBD: "hidden" mom_vecinv recomp. in dynamics
758    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
759     (allow to differentiate between forcing components using new integer flags:
760      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
761     and add new flag to put Dissipation tendency out of Adams-Bashforth.
762    o ecco
763      - enable trend removal from SSH anomaly obs.
764    o adjoint
765      - a fix for PmEpR when #undef EXACT_CONSERV
766      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
767      - try to fix "hidden" recomp. in forward_step for NLFS
768        (NLFS seems broken sometimes after I checked it in)
769    o seaice:
770     - add c-grid version of the dynamic solver:
771       + three new routines that are the c-grid substitute lsr, dynsolver
772         and ostres
773       + put a few fields that were local to dynsolver into global common
774         blocks, so that I can move the computation of stresses etc into
775         seaice_lsr (saves coding but may break the adjoint).
776     - replace more hardwired parameters by runtime parameters
777     - add ice masks that mask the rhs of the implicit solvers where there
778       is no ice (commented out in seaice_dynsolver, because i am not sure
779       if this works properly), eventually this should replace the clipping
780       of ice velocities in seaice_dynsolver to +/-40cm/s.
781    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
782      include it only where its needed
783    o move balancing of fluxes before the call of external_forcing_surf
784    o seaice:
785      - correct units of turning angles (now they are really in degrees)
786      - move computation of GWATX/Y out of main routine into dynsolver
787      - initialize GWATX/Y in seaice_init
788    o Apply mask on Fresh-Water flux (needed for SSH forcing).
789      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
790    o seaice: add runtime flags for turning angles (default to zero)
791    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
792      and trend from exf forcing and ctrl control adjustments
793    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
794      (since checkpoint57x_post)
795    o change the default rotation period to 86164.s = the Earth rotation
796    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
797      and based on a reference stratification. Tested within hs94.cs-32x32x5.
798    o seaice advection: add code for choosing between the default (2nd order
799      central differences) and multiDim advection schemes provided by
800      pkg/generic_advdiff
801    o seaice:
802      - removed all references to SEAICE_GRID.h fields from
803        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
804        (cubed-sphere configuration will change a little)
805      - grid computations in seaice_init are obsolete now.
806      - cleaned up code a little so that is easier to read (hopefully).
807      - added new (better?) discretizations of default advection and diffusion
808        (turn on with SEAICEuseFluxForm)
809      - replace 1 in 3d global fields by kSurface in growth.F
810      
811    checkpoint58a_post
812    o seaice:
813      - bug fix in advect.F
814    o shelfice:
815      - separate shelfice load anomaly from pload (breaks with time
816        dependent forcing), => introduce constant field shelficeLoadAnomaly.
817        Its default is 0., but it may be computed more cleverly from (unknown)
818        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
819        done offline. A good approximation of the pressure load anomaly is
820        necessary to avoid large initial adjustment processes underneath
821        deep-reaching shelfice.
822      - small fix in ISOMIP shelfice_thermodynamics
823      - add more sophisticated thermodynamics of Hellmer (1989), this is
824        now the default
825      - give a few constants more intuitive names
826    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
827      if bulk formulae are used in long integration (especially EmPmR). Turn
828      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
829      if balancePrintMean, the imbalance that is substracted is printed to
830      STDOUT.
831    o fix bug (typo) in obcs_apply_eta.F
832    o add a new package shelfice which enables us to model the circulation
833      underneath shelf-ice with draughts of hundreds of meters.
834     - works
835     - to do: + include improved thermodynamics
836              + check whether kSurfC (from model/inc/SURFACE.h) can be used
837                instead of new field kTopC
838              + can we use topoFile, Ro_surf and existing code in ini_depth.F
839                instead of new field R_shelfIce and new code in ini_depth.F
840                and ini_mask_etc.F?
841              + adjust vertical mixing schemes?
842    o seaice pkg:
843     - add a cpp-flag to include a simple formula for a salinity dependent
844       freezing point of sea water at the surface
845     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
846       meridional stresses are now different (and hopefully correct)
847    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
848       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
849       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
850    o pkg/diagnostics: add options and parameters for regional-statistics
851       diagnostics ; define regions by reading a region-mask from a file
852       (might add other options later)
853    o pkg/bulk_force:
854     - add option and parameters to use AIM surface-flux formulae.
855     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
856       others forcing fields (defined in PARM05, parameter file "data") are loaded
857       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
858     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
859     - use the right EXCH call for uwind,vwind (to work on CS-grid).
860     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
861       and parameters (note: calcWindStress replaces .NOT.readwindstress).
862     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
863    
864    checkpoint58
865    o add "--embed-source" option to genmake2 which, when the supporting
866      tools can be compiled (as determined by genmake2) will turn on the
867      embed_files package which then embeds the entire MITgcm source code
868      (*.[fFhc] + Makefile) used for the build within the executable
869      - requested by CNH but off by default
870      - adds a paltry <9MB to the mitgcmuv executable in most cases
871      - only writes the output when useEMBEDSRC in eedata is true
872    o clean up 3-dim. relaxation codes:
873      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
874      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
875      * Thanks to Tom Haine for testing!
876    
877    checkpoint57z_post
878    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
879      affects output (@ truncation level) of exp. plume_on_slope ; updated.
880    o fix the pickup behavior for obcs in combination with ptracers
881    o fix a bug in ptracers_external_fields_load
882    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
883      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
884    o transfered surface NH pressure to eta field (if exactConserv).
885    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
886         and update lab_sea output.txt file.
887    o completing 3-dim. relaxation code: additional term
888         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
889      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
890      * At compile time, in "EXF_OPTIONS.h" set
891          #define  ALLOW_CLIMTEMP_RELAXATION
892          #define  ALLOW_CLIMSALT_RELAXATION
893      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
894          tauThetaClimRelax3Dim = 15552000.0,
895          tauSaltClimRelax3Dim  = 15552000.0,
896      * 3 cases:
897          1) Use a constant-in-time 3-dim. field
898          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
899          3) Real-time relax. to time-evolving prescribed field
900    o Adding Laplacian-type smoothness constraint on
901      initial and boundary (forcing) controls (ic, bc)
902      * enable at compile-time via
903        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
904      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
905      * Absolute scale somewhat unclear so far
906      * no area weighting was included since no other cost term does so far
907    
908    checkpoint57y_post
909    First step for a NLFS adjoint
910    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
911    o new init. routines for calc_r_star, calc_surf_dr
912    o still need to deal with ini_masks_etc
913    o testreport seemed happy
914    checkpoint57y_pre
915    
916    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
917    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
918    o add new offset feature to offline pkg (plus minor cleanup)
919    o cfc fixes for final year of integration
920    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
921      be in GCHEM_OPTIONS).
922    
923    checkpoint57x_post
924    o fix testreport Pb in multiple test experiment.
925    o cleanup our namelist syntax in verification:
926      - make it more F95 standards compliant (some work still needed)
927      - allows the vast majority of our tests to work with gfortran
928    o Non-Hydrostatic:
929     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
930     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
931    o Allow to apply AB on T,S rather than on AB(gT,gS):
932     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
933     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
934       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
935     - need a "clever" read_pickup to restart from the other AB formulation
936    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
937    o remove some unused variables (reduces number of compiler warnings)
938    o adjoint
939      * Disable useVariableViscosity for adjoint for time being
940        (there are a number of extensive recomputations)
941      * Initialize certain variables needed for adjoint
942    
943    checkpoint57w_post
944    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
945                 fix the singleCpuIO RS version of MDSWRITEFIELD
946       and add a WARNING if using globalFiles=T with multi-processors.
947    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
948      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
949    o tracer advection scheme:
950      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
951       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
952       was not very convenient).
953      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
954       (further tests needed for the implicit DST & Flux-Limiter schemes).
955    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
956      and sRef for convenience, handy, when you want to initialize
957      ptracers in a large domain with a constant non-zero value. Also,
958      untangle ptracers_init.F a little.
959    
960    checkpoint57v_post
961    o change dome exp. to use variable viscosity in side-drag terms.
962    o remove all the files from the cfc_offline test since they are now
963      incorporated into tutorial_cfc_offline which has been producing
964      identical results for a few days of testing
965    o add new parameter: sideDragFactor to enable half-slip-side BC
966      and change side-drag S/R to use viscosity from mom_calc_visc
967      (can switch back by setting sideDragFactor=0.); affects results at
968      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
969       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
970    o vorticity & strain are now computed without masking, to account for
971      no-slip-side BC in variable viscosity calculation ; mask is applied
972      anyway later on, before computing advection/coriolis terms.
973    o modify exp4 to test new obcs support for reading from external files
974      and for passive tracers
975    o fix behavior of ptracers_monitor when monitor output is written to a
976      netcdf-file; still not independent of monitor.F (writes in the same
977      file).
978    o change default value of tRef (put a uniform, meaningful value for ocean
979      & atmos) and initialize sRef (was missing, as Martin mentioned).
980    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
981      to be proportional to enstrophy dissipation length.  Thus,
982       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
983      This is now consistent with Smagorinsky and with the manual.
984    
985    checkpoint57u_post
986    o OBCS and PTRACERS: add open boundary support for passive tracers
987      - either use homogenous (pseudo) v.Neumann conditions or prescribe
988        OB-values from file; this is not different from the way theta and salinity
989        are treated
990      - however, Orlanski-radiation conditions are not supported, and the model
991        will stop if you use pTracers and Orlanski at the same time.
992      - beefed up the rountine obcs_external_fields_load: now only those open
993        boundary values are overwritten with values from files for which there
994        are really files, otherwise the OB-fields remain untouched. This makes
995        it possible to use different OBs at different ends of the domain (as
996        with EXF)
997    o reduce number of exch calls in shap_filt (s2).
998    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
999      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1000    
1001    checkpoint57t_post
1002    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1003    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1004      same truncation, independent of the face number: affects affects several
1005      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1006    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1007      note that biharmonic viscosity + no-slip was not tested in any experiment.
1008    o fix bug in non-linear free-surf side-drag ; generate new output for
1009      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1010    o make mnc honor the writeBinaryPrec flag for most kinds of output
1011    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1012    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1013      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1014    o add brackets in multi-terms sum to get same truncation, independent of
1015      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1016      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1017    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1018      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1019      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1020      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1021      Suggested values of viscosity parameters found in mom_calc_visc.
1022      Many new viscosity diagnostics available.
1023    
1024    checkpoint57s_post
1025    o Add clearing-house for viscosity calculations, mom_calc_visc and
1026      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1027      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1028      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1029      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1030      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1031      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1032      ViscAhStrain and viscAhTension are now retired.
1033    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1034    o In response to JMC's bug report, genmake2 now ignores any soft-links
1035      that it finds in the *current* directory when searching for files.
1036      Soft-links found in any other source directories will still work as
1037      they did before.
1038    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1039      a C routine to unlimit the stack size
1040    o mnc-ify pkg/aim snapshot vars
1041    o mnc-ify pkg/land as requested by Daniel
1042    o various changes to mnc including:
1043      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1044      - output can now be grouped so that all files within a group
1045          change the ITER portion of their names in lock-step together
1046      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1047          and works with both EXCH1 and EXCH2 (but needs more testing)
1048      - writing works for all verification test cases w/ g77 on Linux
1049    
1050    checkpoint57r_post
1051    o make MNC variable initialization happen earlier
1052    o add diagnostics for (almost) each term of the momentum Eq.
1053    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1054    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1055    o remove MINIMAL_TAVE_OUTPUT option ;
1056      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1057    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1058      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1059    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1060    o add time-dependent SST, SSS control
1061    o cost terms in ecco/ modularized (new cost_generic.F)
1062    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1063    o new infrastructure for seaice model vs. obs misfits in seaice/
1064      * driver from the_main_loop.F is seaice_cost_driver.F
1065      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1066      * gradient check in Exp. 6a of natl_box_adjoint/
1067    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1068      (see README file)
1069    
1070    checkpoint57q_post
1071  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1072  o fix annoying months-old bug in mnc/mdsio output for seaice pkg  o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1073    - bug was reported by Jean-Michel and Ian Fenty    - bug was reported by Jean-Michel and Ian Fenty
# Line 16  o Changed some tests for adjoint: Line 1080  o Changed some tests for adjoint:
1080    * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT    * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1081    * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT    * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1082    * global_ocean.90x40x15/ back to default 3-level checkpointing    * global_ocean.90x40x15/ back to default 3-level checkpointing
1083    o Modifications to enable scripted COMMON to MODULE conversion
1084      * verification/OpenAD/code/ has necessary scripts and description;
1085      * converts, compiles and runs successfully;
1086    
1087  checkpoint57p_post  checkpoint57p_post
1088  o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F  o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F

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