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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.859 by jmc, Fri Aug 17 20:51:27 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
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
390     - 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
392     - move a few global fields out of SEAICE.h into seaice_growth.F and
393       make them 2D (FICE/QNETO/ ...)
394     - remove FO (it is the same as QNETO)
395     - introduce a few local fields to avoid modifying external fields such
396       as atemp, etc.
397    
398    checkpoint58s_post
399    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
400      changed exf_set_gen.F so that
401        genperiod=0 means input file is one time-constant field and
402        genperiod=-12 means input file contains 12 monthly means
403    o CG2D: use pre-computed solver main-diagonal (stored in common block);
404      this affects truncation error ; generate new output file for exp. which
405      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
406        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
407        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
408        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
409        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
410        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
411    o start implementation of deep-atmosphere and anelastic formulation
412    o verification: remove 2nd copy of input files and use script "prepare_run"
413      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
414    o mom_common/vecinv/fluxform: fix a few initialisation isssues
415    o profiles: fix for multithreaded case
416    
417    o diagnostics: rename few diags:
418      s/'PRESSURE'/'RCENTER '/g
419      s/'TICE    '/'oceFreez'/g
420      s/'TAUX    '/'oceTAUX '/g
421      s/'TAUY    '/'oceTAUY '/g
422      s/'SWFLUX  '/'oceQsw  '/g
423      s/DIFx/DFxE/g
424      s/DIFy/DFyE/g
425      and add few ocean-forcing diagnostics:
426      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
427    o modifications to pkg/seaice/growth.F and budget.F, which change results of
428      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
429      as actual snow thickness.  It now refers everywhere to effective snow
430      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
431    
432    checkpoint58r_post
433    o modifications to pkg/seaice/growth.F, which change results of
434      lab_sea experiment: fixes pertain to melting snow over open water, to
435      masking EVAP under sea ice, and to using the correct AREA variable for
436      computations of EVAP, PRECIP, HSNOW, and GHEFF
437    o add ability to read bathy, salt, and theta using MNC (off by def)
438    o add flooding algorithm and advection of HSNOW for pkg/seaice;
439      both are turned off by default and do no change any results
440    o seaice advection with pkg/thsice: a step toward the use of non-linear
441      advection scheme, but #ifdef or commented out for now (requires more EXCH).
442    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
443      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
444      in natl_box (affects results @ truncation level: update output.txt)
445    o multi-threading and IO:
446      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
447      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
448        (needed to work with SingleCpuIO): tested in all verif. exp.
449    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
450      affects the results (but none of the verification test uses this scheme).
451    o Adding some pkg/diagnostics capability to pkg/seaice
452      (will certainly be subject to changes)
453    o ctrl: adding new control variables:
454      lwflux, lwdown, evap, snowprecip, apressure, runoff
455    
456    checkpoint58q_post
457    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
458      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
459      high_res_cube configuration by 4% on Columbia.
460    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
461      add (in global_with_exf/code) a version of EXF_INTERP_READ without
462      dynamical allocation (seems to work in multi-threaded).
463    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
464      single CPU io) so that TAF does not have to see EESUPPORT.h
465    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
466    
467    checkpoint58p_post
468    o obcs: stop if obcs is used with useCDscheme = .true.
469    o shelfice:
470     - fix a sign error so that no slip at shelfice interface works
471     - remove stop for combination non-hydrostatic code and shelfice. That does
472       not mean, that the results are correct, but at least they are numerically
473       stable
474    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
475    o added adjoint exch routined for all exch*3d* routines
476      and updated flow directives
477    
478    checkpoint58o_post
479    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
480      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
481    o change controling S/R for writing pickup file (new S/R do_write_pickup)
482      and clean-up reading/writing of pickup files.
483    o fix local version of read/write pickup (NH part) in rotating_tank/code
484    o simplify EXCH interface:
485     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
486     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
487    o added the regrid package
488    o shelfice:
489     - add a simple boundary layer scheme to reduce noise
490     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
491    
492    checkpoint58n_post
493    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
494       local variable (not in common block).
495    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
496      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
497      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
498        to work with SingleCpuIO.
499    o add "_d 0" to real constant of pkg/cfc subroutines ;
500       update exp. cfc_exemple & tutorial_cfc_offline output files.
501    o multi-threading and IO:
502      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
503        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
504      - barrier before and after reading.
505      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
506      - avoid using MDS_WRITELOCAL for LAND pkg output.
507      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
508        common-block variables ; Allows multi-threading with master-thread IO.
509    o change default MAX_NO_THREADS from 32 to 4 ;
510      and stop cleanly when MAX_NO_THREADS is too small.
511    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
512    
513    checkpoint58m_post
514    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
515       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
516    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
517       keep global_ocean.90x40x15 (for AD testing) with former secondary test
518       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
519    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
520        add MITgcm_tutorials (= code + all the tutorials)
521    o ecco, option to compute cost for total ssh (mean+anom)
522    o consistent with addition of ptracer and ssh in pkg/profiles
523    o profiles: adding ptracer and ssh
524    o testreport: change multi-test output-file name
525      (from output.txt.{name} to output.{name}.txt)
526    o profiles: now ok for mutli-tiles case
527    o seaice: add 4 parameters for different advection schemes for area,
528      (effective) seaice thickness, enthalphy, and snow height. Their default
529      is the standard parameter SEAICEadvScheme
530    o calc_gw:
531     - add cosFacU in zonal viscous flux (harmonic.visc.).
532     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
533       of tutorial_plume_on_slope.
534    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
535    o calc_gw: true flux-form, account for horizontal grid spacing.
536      update rotating_tank results, but not plume_on_slope (affected at
537      truncation level, 11 digits).
538    
539    checkpoint58l_post
540    o calc_gw:
541     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
542     - remove side-drag for now (need to fix it); update plume_on_slope results.
543     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
544    o commit code to make SST/SSS weights spatially variable
545      (based on either variable in-situ or variable initial T/S weights)
546    o pkg/ecco:
547      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
548        now based on horizontally varying weights wthetaLev, wsaltLev
549      * cost_averagesflags now returns year indices in addition to day, month
550      * sflux balance is performed on annual basis
551        (sflxumm, sfluxmm2, bal_sfluxmm)
552      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
553        including separate counting and multipliers
554    o pkg/rbcs
555      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
556    
557    checkpoint58k_post
558    o testreport:
559     - always build in dir. "build" (if not there, mkdir build instead of building
560       & running in input)
561     - run in dir run (if it exists), in build otherwise.
562     - call prepare_run (if input/prepare_run exists)
563     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
564    o pkg/exf modifications to interpolation and rotation routines for more
565       reasonable treatment of North Pole singularity: for tracers North Pole
566       value is set to northernmost zonal-mean value, for zonal velocity it is
567       set to zero, and for meridional velocity it is set to northernmost value.
568    o pkg/exf/exf_check_range.F
569     - add tile index to diagnostics and move stop statement to the very
570       end of the routine.
571    o pkg/diagnostics: (diagnostics_main_init.F)
572      define title of isomorphic variables according to the current config.
573    o pkg/thsice with pkg/seaice dynamics:
574    - fix domain of computation (interior only, required for exf) and do exchanges
575    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
576    o towards a standard way of dealing with multi-threading in MONITOR
577      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
578    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
579       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
580    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
581    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
582    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
583       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
584    o tracer advection:
585     - clean-up and simplify calc_common_factors.F
586     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
587       advection subroutine (but still not used within DST advection S/R)
588    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
589    
590    checkpoint58j_post
591    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
592      from file (collects calls previously in FORWARD_STEP)
593    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
594    o adjoint store dir. adjusted accordingly
595    o genmake2
596      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
597    
598    checkpoint58i_post
599    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
600      on wind stress (SEAICEstressFactor defaults to 1.)
601    o Total number of Timers is finite (<=40): comment out 2 non-essential one
602      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
603    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
604      on CS-grid: no longer loosing mass.
605    o exf & curvilinear-grid: no longer modify longitude xC & xG.
606    o pkg/ggl90: fix sloppy output and fix a bug
607    o pkg/seaice: added SEAICEuseEVPpickup parameter
608      - Set to false in order to start EVP solver with
609        non-EVP pickup files when using SEAICEuseEVP
610      - fix sign error in diffusion in seaice_calc_rhs
611    
612    checkpoint58h_post
613    * Modifications for bottom topography control
614      o replace hFacC by _hFacC at various places
615      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
616      o add non-self-adjoint cg2d_nsa
617      o update autodiff support routines
618      o re-initialise hfac after ctrl_depth_ini
619      o works for 5x5 box, doesnt work for global_ocean.90x40x15
620    * Adding verification for 5x5 box (4-layer) bottom topography control
621    
622    checkpoint58g_post
623    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
624       used for mean seasonal cycle, mean diurnal cycle); add an example
625       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
626    o pkg/ggl90:
627      - add parameter (minimum surface kinetic energy)
628      - fix bug (avoiding division by zero)
629    o couple pkg/thsice to pkg/seaice:
630      - modify advection in seaice to accomodate new scalar fields to be advected
631      - only muliDimAdection scheme work with seaice/thsice
632      - mapping of thsice-variables to seaice-variables, back and forth
633      - does not break the verification experiments, but does not give the
634        desired results either
635    o pkg/seaice
636      - make (default) second order advection a bit less confusing?
637    
638    checkpoint58f_post
639    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
640      to pkg/seaice):
641      - new routines thsice_map_exf and thsice_get_exf provide the interface
642      - add an additional formal parameter to thsice_solve4temp
643    o pkg/exf:
644      - add new fields wspeed, snowprecip (to be able to couple to thsice)
645      - correct Stefan-Boltzmann constant
646      - new parameter for longwave surface emittance
647      - separate some stuff from exf_bulkformulae into new routines  
648        exf_radiation, exf_wind
649      - add new parameters and constants: longwave emissivity for ocean, ice
650        and snow, evaporation parameters over ice
651      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
652        either wind from stress or stress from wind
653    o pkg/thSIce:
654    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
655    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
656       and THSICE_CALC_THICKN
657    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
658    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
659      to make debugging easier.
660    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
661    o pkg/bulk_force:
662      - clean-up comments and parameters ;
663      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
664    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
665      generate new output for test-experiment: aim.5l_cs.thSI
666    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
667      testreport accordingly
668    
669    checkpoint58e_post
670    o SEAICE_CGRID adjoint done
671    o R_STAR adjoint implemented.
672      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
673      * need to sort out init. of h0facc, etc.
674    o Make pkg/profile fully independent of ecco,cost, etc. stuff
675      to be able to use it in pure forward.
676    
677    checkpoint58d_post
678    o upgrade simple test-experiment to tutorial example:
679     step.1: duplicate the experiment and (step.2) will remove the old copy.
680      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
681      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
682      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
683      tutorial_global_oce_biogeo    <- copy of dic_example
684      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
685      tutorial_plume_on_slope       <- copy of plume_on_slope
686      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
687      tutorial_global_oce_optim     <- empty for now (David ?)
688      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
689     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
690    o correct a sign problem in cost_scat.F
691    o obcs and ptracers: fix boundary conditions for advections schemes
692      with larger stencil
693    o thsice adjoint: start
694    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
695      completeness
696    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
697      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
698    o ptracers adjoint:
699      * avoid extensive recomputatations
700      * fix missing re-init. of gptr (missed by TAF)
701    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
702      me to turn off the excessive output to STDOUT that this package produces
703    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
704      and add those terms in Vector-Invariant formulation.
705    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
706      if the control period (xx_hfluxperiod etc) is 0
707    o in profiles pkg, clean routines and fix details
708    o in ecco pkg, reading ssh data:
709      fix problem in case the model does not start at iter0=0
710    o fix mnc-pickup/restart for ptracers
711    o new package prifiles:
712      code to compute profile-based cost by Gael Forget
713      (modifs in ecco, ctrl, autodiff)
714    o Benign bug fix in initialization (spotted by M. Mazloff) of
715      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
716    
717    checkpoint58c_post
718    o adjoint: finish NLFS adjoint and provide reference output in
719      verification/global_ocean.90x40x15/results_ad_nlfs
720    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
721      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
722      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
723      with SEAICE_CGRID defined.
724    o move calendarDumps from "data" to "data.cal" and clean-up the code
725      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
726    o add useEXF & useCAL flags (for now, set in hard-coded way)
727    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
728      (were missing in NH mode, and wrong in quasihydrostatic mode).
729      waiting for Chris updated version of calc_gw to add those CALLs.
730    o fix bug in quasihydrostatic S/R ;
731      add a test for this option: global_ocean.90x40x15.qshyd
732    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
733      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
734    o add on/off flag useOffLine for package OFFLINE
735    o seaice:
736      - modify advection so that it works also on the C-grid
737      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
738        problem in multi-tile runs with C-grid
739      - add flags for clipping ice velocities and/or masking solver forcing
740      - fix drag (ocean on ice) formulation and a bug that caused noise in the
741        C-grid solver
742      - added a few comments to seaice_diffusion.F
743      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
744        are now exclusive)
745      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
746        required re-ordering the code a little:
747       + make DAIRN global variable (defined in SEAICE)
748       + move computation of the viscosities eta and zeta into a new separate
749         routine (because I need to recompute them in seaice_ocean_stress.F)
750    
751    checkpoint58b_post
752    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
753      update output.txt of exp. aim.5l_cs.thSI
754    o various mnc cleanups and improvements:
755      + shrink lookup tables by factor of ~4
756      + better error reporting when running out of lookup space
757      + able to handle longer path/file names (up to 500 chars)
758    o adjoint:
759      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
760      - TBD: "hidden" mom_vecinv recomp. in dynamics
761    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
762     (allow to differentiate between forcing components using new integer flags:
763      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
764     and add new flag to put Dissipation tendency out of Adams-Bashforth.
765    o ecco
766      - enable trend removal from SSH anomaly obs.
767    o adjoint
768      - a fix for PmEpR when #undef EXACT_CONSERV
769      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
770      - try to fix "hidden" recomp. in forward_step for NLFS
771        (NLFS seems broken sometimes after I checked it in)
772    o seaice:
773     - add c-grid version of the dynamic solver:
774       + three new routines that are the c-grid substitute lsr, dynsolver
775         and ostres
776       + put a few fields that were local to dynsolver into global common
777         blocks, so that I can move the computation of stresses etc into
778         seaice_lsr (saves coding but may break the adjoint).
779     - replace more hardwired parameters by runtime parameters
780     - add ice masks that mask the rhs of the implicit solvers where there
781       is no ice (commented out in seaice_dynsolver, because i am not sure
782       if this works properly), eventually this should replace the clipping
783       of ice velocities in seaice_dynsolver to +/-40cm/s.
784    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
785      include it only where its needed
786    o move balancing of fluxes before the call of external_forcing_surf
787    o seaice:
788      - correct units of turning angles (now they are really in degrees)
789      - move computation of GWATX/Y out of main routine into dynsolver
790      - initialize GWATX/Y in seaice_init
791    o Apply mask on Fresh-Water flux (needed for SSH forcing).
792      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
793    o seaice: add runtime flags for turning angles (default to zero)
794    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
795      and trend from exf forcing and ctrl control adjustments
796    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
797      (since checkpoint57x_post)
798    o change the default rotation period to 86164.s = the Earth rotation
799    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
800      and based on a reference stratification. Tested within hs94.cs-32x32x5.
801    o seaice advection: add code for choosing between the default (2nd order
802      central differences) and multiDim advection schemes provided by
803      pkg/generic_advdiff
804    o seaice:
805      - removed all references to SEAICE_GRID.h fields from
806        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
807        (cubed-sphere configuration will change a little)
808      - grid computations in seaice_init are obsolete now.
809      - cleaned up code a little so that is easier to read (hopefully).
810      - added new (better?) discretizations of default advection and diffusion
811        (turn on with SEAICEuseFluxForm)
812      - replace 1 in 3d global fields by kSurface in growth.F
813      
814    checkpoint58a_post
815    o seaice:
816      - bug fix in advect.F
817    o shelfice:
818      - separate shelfice load anomaly from pload (breaks with time
819        dependent forcing), => introduce constant field shelficeLoadAnomaly.
820        Its default is 0., but it may be computed more cleverly from (unknown)
821        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
822        done offline. A good approximation of the pressure load anomaly is
823        necessary to avoid large initial adjustment processes underneath
824        deep-reaching shelfice.
825      - small fix in ISOMIP shelfice_thermodynamics
826      - add more sophisticated thermodynamics of Hellmer (1989), this is
827        now the default
828      - give a few constants more intuitive names
829    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
830      if bulk formulae are used in long integration (especially EmPmR). Turn
831      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
832      if balancePrintMean, the imbalance that is substracted is printed to
833      STDOUT.
834    o fix bug (typo) in obcs_apply_eta.F
835    o add a new package shelfice which enables us to model the circulation
836      underneath shelf-ice with draughts of hundreds of meters.
837     - works
838     - to do: + include improved thermodynamics
839              + check whether kSurfC (from model/inc/SURFACE.h) can be used
840                instead of new field kTopC
841              + can we use topoFile, Ro_surf and existing code in ini_depth.F
842                instead of new field R_shelfIce and new code in ini_depth.F
843                and ini_mask_etc.F?
844              + adjust vertical mixing schemes?
845    o seaice pkg:
846     - add a cpp-flag to include a simple formula for a salinity dependent
847       freezing point of sea water at the surface
848     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
849       meridional stresses are now different (and hopefully correct)
850    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
851       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
852       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
853    o pkg/diagnostics: add options and parameters for regional-statistics
854       diagnostics ; define regions by reading a region-mask from a file
855       (might add other options later)
856    o pkg/bulk_force:
857     - add option and parameters to use AIM surface-flux formulae.
858     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
859       others forcing fields (defined in PARM05, parameter file "data") are loaded
860       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
861     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
862     - use the right EXCH call for uwind,vwind (to work on CS-grid).
863     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
864       and parameters (note: calcWindStress replaces .NOT.readwindstress).
865     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
866    
867    checkpoint58
868    o add "--embed-source" option to genmake2 which, when the supporting
869      tools can be compiled (as determined by genmake2) will turn on the
870      embed_files package which then embeds the entire MITgcm source code
871      (*.[fFhc] + Makefile) used for the build within the executable
872      - requested by CNH but off by default
873      - adds a paltry <9MB to the mitgcmuv executable in most cases
874      - only writes the output when useEMBEDSRC in eedata is true
875    o clean up 3-dim. relaxation codes:
876      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
877      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
878      * Thanks to Tom Haine for testing!
879    
880    checkpoint57z_post
881    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
882      affects output (@ truncation level) of exp. plume_on_slope ; updated.
883    o fix the pickup behavior for obcs in combination with ptracers
884    o fix a bug in ptracers_external_fields_load
885    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
886      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
887    o transfered surface NH pressure to eta field (if exactConserv).
888    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
889         and update lab_sea output.txt file.
890    o completing 3-dim. relaxation code: additional term
891         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
892      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
893      * At compile time, in "EXF_OPTIONS.h" set
894          #define  ALLOW_CLIMTEMP_RELAXATION
895          #define  ALLOW_CLIMSALT_RELAXATION
896      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
897          tauThetaClimRelax3Dim = 15552000.0,
898          tauSaltClimRelax3Dim  = 15552000.0,
899      * 3 cases:
900          1) Use a constant-in-time 3-dim. field
901          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
902          3) Real-time relax. to time-evolving prescribed field
903    o Adding Laplacian-type smoothness constraint on
904      initial and boundary (forcing) controls (ic, bc)
905      * enable at compile-time via
906        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
907      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
908      * Absolute scale somewhat unclear so far
909      * no area weighting was included since no other cost term does so far
910    
911    checkpoint57y_post
912    First step for a NLFS adjoint
913    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
914    o new init. routines for calc_r_star, calc_surf_dr
915    o still need to deal with ini_masks_etc
916    o testreport seemed happy
917    checkpoint57y_pre
918    
919    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
920    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
921    o add new offset feature to offline pkg (plus minor cleanup)
922    o cfc fixes for final year of integration
923    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
924      be in GCHEM_OPTIONS).
925    
926    checkpoint57x_post
927    o fix testreport Pb in multiple test experiment.
928    o cleanup our namelist syntax in verification:
929      - make it more F95 standards compliant (some work still needed)
930      - allows the vast majority of our tests to work with gfortran
931    o Non-Hydrostatic:
932     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
933     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
934    o Allow to apply AB on T,S rather than on AB(gT,gS):
935     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
936     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
937       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
938     - need a "clever" read_pickup to restart from the other AB formulation
939    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
940    o remove some unused variables (reduces number of compiler warnings)
941    o adjoint
942      * Disable useVariableViscosity for adjoint for time being
943        (there are a number of extensive recomputations)
944      * Initialize certain variables needed for adjoint
945    
946    checkpoint57w_post
947    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
948                 fix the singleCpuIO RS version of MDSWRITEFIELD
949       and add a WARNING if using globalFiles=T with multi-processors.
950    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
951      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
952    o tracer advection scheme:
953      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
954       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
955       was not very convenient).
956      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
957       (further tests needed for the implicit DST & Flux-Limiter schemes).
958    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
959      and sRef for convenience, handy, when you want to initialize
960      ptracers in a large domain with a constant non-zero value. Also,
961      untangle ptracers_init.F a little.
962    
963    checkpoint57v_post
964    o change dome exp. to use variable viscosity in side-drag terms.
965    o remove all the files from the cfc_offline test since they are now
966      incorporated into tutorial_cfc_offline which has been producing
967      identical results for a few days of testing
968    o add new parameter: sideDragFactor to enable half-slip-side BC
969      and change side-drag S/R to use viscosity from mom_calc_visc
970      (can switch back by setting sideDragFactor=0.); affects results at
971      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
972       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
973    o vorticity & strain are now computed without masking, to account for
974      no-slip-side BC in variable viscosity calculation ; mask is applied
975      anyway later on, before computing advection/coriolis terms.
976    o modify exp4 to test new obcs support for reading from external files
977      and for passive tracers
978    o fix behavior of ptracers_monitor when monitor output is written to a
979      netcdf-file; still not independent of monitor.F (writes in the same
980      file).
981    o change default value of tRef (put a uniform, meaningful value for ocean
982      & atmos) and initialize sRef (was missing, as Martin mentioned).
983    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
984      to be proportional to enstrophy dissipation length.  Thus,
985       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
986      This is now consistent with Smagorinsky and with the manual.
987    
988    checkpoint57u_post
989    o OBCS and PTRACERS: add open boundary support for passive tracers
990      - either use homogenous (pseudo) v.Neumann conditions or prescribe
991        OB-values from file; this is not different from the way theta and salinity
992        are treated
993      - however, Orlanski-radiation conditions are not supported, and the model
994        will stop if you use pTracers and Orlanski at the same time.
995      - beefed up the rountine obcs_external_fields_load: now only those open
996        boundary values are overwritten with values from files for which there
997        are really files, otherwise the OB-fields remain untouched. This makes
998        it possible to use different OBs at different ends of the domain (as
999        with EXF)
1000    o reduce number of exch calls in shap_filt (s2).
1001    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1002      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1003    
1004    checkpoint57t_post
1005    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1006    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1007      same truncation, independent of the face number: affects affects several
1008      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1009    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1010      note that biharmonic viscosity + no-slip was not tested in any experiment.
1011    o fix bug in non-linear free-surf side-drag ; generate new output for
1012      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1013    o make mnc honor the writeBinaryPrec flag for most kinds of output
1014    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1015    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1016      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1017    o add brackets in multi-terms sum to get same truncation, independent of
1018      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1019      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1020    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1021      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1022      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1023      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1024      Suggested values of viscosity parameters found in mom_calc_visc.
1025      Many new viscosity diagnostics available.
1026    
1027    checkpoint57s_post
1028    o Add clearing-house for viscosity calculations, mom_calc_visc and
1029      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1030      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1031      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1032      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1033      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1034      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1035      ViscAhStrain and viscAhTension are now retired.
1036    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1037    o In response to JMC's bug report, genmake2 now ignores any soft-links
1038      that it finds in the *current* directory when searching for files.
1039      Soft-links found in any other source directories will still work as
1040      they did before.
1041    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1042      a C routine to unlimit the stack size
1043    o mnc-ify pkg/aim snapshot vars
1044    o mnc-ify pkg/land as requested by Daniel
1045    o various changes to mnc including:
1046      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1047      - output can now be grouped so that all files within a group
1048          change the ITER portion of their names in lock-step together
1049      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1050          and works with both EXCH1 and EXCH2 (but needs more testing)
1051      - writing works for all verification test cases w/ g77 on Linux
1052    
1053    checkpoint57r_post
1054    o make MNC variable initialization happen earlier
1055    o add diagnostics for (almost) each term of the momentum Eq.
1056    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1057    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1058    o remove MINIMAL_TAVE_OUTPUT option ;
1059      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1060    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1061      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1062    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1063    o add time-dependent SST, SSS control
1064    o cost terms in ecco/ modularized (new cost_generic.F)
1065    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1066    o new infrastructure for seaice model vs. obs misfits in seaice/
1067      * driver from the_main_loop.F is seaice_cost_driver.F
1068      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1069      * gradient check in Exp. 6a of natl_box_adjoint/
1070    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1071      (see README file)
1072    
1073    checkpoint57q_post
1074    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1075    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1076      - bug was reported by Jean-Michel and Ian Fenty
1077    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1078      update exp. cpl_aim+ocn output.
1079    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1080      Needed for high-res. runs with large global files
1081      to be able to limit tapelev size
1082    o Changed some tests for adjoint:
1083      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1084      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1085      * global_ocean.90x40x15/ back to default 3-level checkpointing
1086    o Modifications to enable scripted COMMON to MODULE conversion
1087      * verification/OpenAD/code/ has necessary scripts and description;
1088      * converts, compiles and runs successfully;
1089    
1090    checkpoint57p_post
1091    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1092    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1093      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1094    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1095    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1096      (was already the case for dissipation with mom_vecinv,
1097       and also the case for grad.PhiHyd when staggered-timeStep)
1098      This will allow to put dissipation out-off the AB time-stepping.
1099     Unfortunately, affects truncation error. Update output of exp. that "fails"
1100      (cg2d matching number) and leave the others for later: front_relax(10),
1101      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1102      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1103    
1104    checkpoint57o_post
1105    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1106      (2) its ready to be documented during the 20050801 DocFest
1107    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1108      for ideal_2D_oce and lab_sea on linux_ia32_g77
1109    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1110      in global1x1_tot/code_seaice_adj to access indices 32, 33
1111      (worth another tag)
1112    
1113    checkpoint57n_post
1114    o adding precip control xx_precip 32
1115    o adding swflux control xx_swflux 33
1116    o Replacing 10 forcing penalty cost routines by 1 generic.
1117    o Implementing partitioning in time-mean and variable adjustment
1118      for atmos. state.
1119    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1120    o in natl_box_adjoint:
1121      * updated exp 1 to 10
1122        (but does not have time-mean vs. variable split results yet)
1123    o updated global1x1/*_seaice_adj/
1124      to incorporate latest changes
1125    o enable useSingleCpuIO for mdsio vector routines
1126      (applies in particular to tapelev I/O)
1127    o removed inefficient K-loop in all active_file*control*.F
1128    
1129    checkpoint57m_post
1130    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1131      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1132    o pkg/exch2: filling of face-corner halo regions is optional
1133      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1134    
1135    checkpoint57l_post
1136     tag before updating tutorials (pre-release-2)
1137    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1138       for output and interpolation of input fields onto model grid)
1139    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1140       Affects results of exp. rotating_tank ; update output.txt.
1141    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1142          and taking the square quantity and/or using a fraction-weight field.
1143    o fix aim_diagnostics_init.F mate numbers.
1144    o add mnc output capability to diagnostics/diagstat and update
1145      our cvsignore files for the ACSII output generated
1146    
1147    checkpoint57k_post
1148    o lab_sea now uses diagnostics package and provides a suite of
1149      new EXF diagnostics output.
1150    
1151    checkpoint57j_post
1152    o exf
1153      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1154        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1155        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1156      * extended diagnostics output
1157        - now includes all EXF variables
1158        - hs, hl moved to common block
1159        - separate S/R for diagnostics, called after ctrl vector is added
1160        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1161        - EXFqnet contains true Qnet (i.e. includes qsw)
1162      * updated verif. lab_sea, global_with_exf
1163      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1164        to ensure that diagnostics sees a true EXFqnet
1165    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1166    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1167      several times with different frequencies.
1168    o mnc-ify the thsice package as requested by Daniel Enderton
1169      - the monitor--MNC output needs work
1170      - many attributes need to be added (most are currently blank)
1171    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1172      - many attributes need to be added (most are currently blank)
1173    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1174    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1175    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1176      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1177         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1178    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1179     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1180    
1181    checkpoint57i_post
1182    o Diagnostics package was changed: diagnostic allocation is now deactivated
1183      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1184    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1185      add 1rst Order upwind vertical Shear.
1186    o add a quick fix for A/B checkpointing in OFFLINE mode
1187    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1188      end-run around the C/Fortran linking horror in eesup/src/timers.F
1189    o added pkg/runclock: allows user to terminate run based on wall clock
1190    o added non-hydrostatic scaling parameter: nh_am2
1191    o pkg/my82: futile attempt to make results compiler-independent by adding
1192      some "_d 0", etc. no effect.
1193    o for mnc output, fill the 'T' coordinate var with myTime and create a
1194      separate 'iter' variable for iteration count
1195    o pkg/diagnostics:
1196      add new capability: output of Global/Regional & per-level statistics ;
1197      tested against monitor output (including land & thSIce) on various exp.
1198    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1199    
1200    checkpoint57h_done
1201      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1202      data.diagnostics, data.gchem, data.ptracers) is done.
1203    
1204    o pkg/diagnostics: prepare for Global/Regional statistics.
1205      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1206    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1207      and rename it: DIFFERENT_MULTIPLE
1208    
1209    checkpoint57h_post
1210    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1211    o pkg/diagnostics: change output frequency, now in seconds (instead
1212      of Nb of iterations). This requires to change data.diagnostics.
1213    checkpoint57h_pre
1214    
1215    o in mnc, let the user create the output dir if both mnc_outdir_date
1216      and mnc_outdir_num are false
1217    o add fflags() to pkg/diagnostics which allows one to specify, on a
1218      per-file basis, the file precision [default behavior is unchanged]
1219    o added diagnostics to pkg/kpp, including computation of mixed layer
1220      depth based on a temperature/density criterion
1221    o updated verification/natl_box to test the new pkg/kpp diagnostics
1222    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1223    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1224    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1225      not mnc -- this mistake was found by JMC and is now corrected
1226    
1227    checkpoint57g_post
1228    o add Adams-Bashforth 3rd Order time stepping:
1229      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1230      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1231    checkpoint57g_pre
1232    
1233    o make lambda[Theta,Salt]ClimRelax spatially varying
1234      (default remains spatially uniform constant based on tau)
1235    o added new control variables
1236      * init. uVel, vVel, etanN
1237      * lambda[Theta,Salt]ClimRelax
1238    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1239      (suggested by G. Forget)
1240    
1241    checkpoint57f_post
1242    o add parameter "baseTime" = model base time = time at iteration zero
1243      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1244      account for baseTime shift
1245    o move Coriolis arrays from PARAMS.h to GRID.h
1246    checkpoint57f_pre
1247    
1248    o mnc-ifying the seaice package
1249    o introduced an alternative length scale calculation for use in the limiting
1250      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1251    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1252    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1253      as well as grad(vort3).  Made it compatible with both approximate form
1254      for the cubed sphere and full form of these gradients.  Added flag
1255      useFullLeith to select between approximate and full form.  
1256    o add "d0" in getcon.F to reduce differences between compilers/platforms
1257      update output.txt of exp. fizhi-gridalt-hs
1258    o change port_rand funtion to allow to set the seed.
1259    o fix obscure MNC bug involving conversion between reals and integers
1260      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1261        new version is now more standards-compliant
1262    o adjoint-related modifications
1263      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1264      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1265      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1266    
1267    checkpoint57e_post
1268    o Adding eddy stress controls a la Ferreira et al.
1269    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1270    
1271    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1272      update output.txt of exp. fizhi-gridalt-hs
1273    o add more "Z" dimensions and associated coordinate vars to MNC
1274    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1275    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1276      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1277      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1278      months and years.  Requires pkg/cal.
1279    o diagnostics: add pickup functionality
1280      - off by default for backwards compatibility
1281      - current version only uses MDSIO -- MNC will be added
1282    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1283    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1284    
1285    checkpoint57d_post
1286    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1287    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1288      output from the diagnostics package
1289    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1290    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1291      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1292    o add coordinate variables to the MNC output from the diagnostics package
1293    o change MNC-flags default value: true when useMNC=TRUE
1294    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1295      the ability (off by default) to read the grid information using MNC
1296    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1297    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1298    o do snap-shot diagnostics at the middle of the time-interval (instead of
1299      at the end).
1300    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1301      new test for AIM with thSIce + slab-ocean
1302    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1303    o move state variable diagnostics to the beginning of the time step ;
1304      (note: still needs some work specially for snap-shot diagnostics)
1305      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1306    
1307    checkpoint57c_post
1308    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1309    o generate new output.txt files on faulks with g77 & the new -ieee option
1310    checkpoint57c_pre
1311    
1312    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1313      update output.txt of exp. global_ocean.90x40x15
1314    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1315      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1316    o add saltFlux(+File) forcing capability with periodicExternalForcing
1317    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1318    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1319    o improvements for the MNC output from DIAGNOSTICS:
1320      - correct handling of the unlimitied dimension
1321      - all dims now have associated coordinate variables
1322      - variables located at U, V, and Corner ("Z") points are now written
1323        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1324        *all* data points are output
1325    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1326    o added pkg/seaice/seaice_monitor.F
1327    o mdsio_readfield.F can now read files visible only to master MPI process.
1328    o pkg/seaice: some test code for ice-modified ocean stress
1329    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1330      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1331      spurious negative numbers for precipitation and humidity.  Will cause
1332      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1333    o pkg/ctrl/
1334      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1335        May be enabled via doPackDiag
1336      *  introduce z-scaling of
1337         + gradient (doZscalePack) and
1338         + control (doZscaleUnpack)
1339    o pkg/mdsio/
1340      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1341      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1342    
1343    checkpoint57b_post
1344    o simplify options in diagnostics_fill arguments (remove weird combinations)
1345    o fix MNC coordinate variables so that they now contain per-face index
1346      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1347      general, EXCH2 grids are only aligned to a "local" coordinate system
1348    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1349    o Implement instantaneous output within pkg diagnostics:
1350      setting a negative frequency in data.diagnostics produces
1351     "snap-shot" output (as opposed to time-average if freq > 0)
1352    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1353      NOTE: change ptracer diagnostics name: use 2 characters to work with
1354            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1355    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1356      becomes the coordinate variable for the 'T' dimension
1357    o add CF-style coordinate variables to MNC
1358      - just a first cut:  numbers are meaningless on the cubesphere and
1359        missing along the T axis but otherwise it works!
1360    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1361    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1362    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1363      this is based directly on what the model compute, so that the content of
1364      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1365    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1366    o clean up build options files for SunOS, in particular
1367      - remove -traditional from xmakedepend
1368      - change -xarch=v9 to -xarch=native for f77
1369      - restore use of make (not gmake)
1370      - add CC=gcc if using g77
1371    o changes per discussion of AM, JMC, & EH3 today:
1372      - move redundant "grid" variables out of "state" -- in preparation of
1373        creating proper CF-style coordinate variables and in recognition
1374        that any/all grid variables can be easily copied (eg. w/NCO) from
1375        the grid files into any of the other NetCDF files
1376      - *always* output grid variables with MDSIO (this will eventually be
1377        changed)
1378      - output MNC grid file if useMNC is true
1379    o every instance of _END_MASTER() has been found and replaced with
1380      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1381      preprocessors
1382    o re-arrange diagnostics pkg initialisation:
1383     - allow each package to extend the available diagnostics list
1384     - add some checking and fix small problems (multi-threaded, ...)
1385     - new S/R diagnostics_fill (replace fill_diagnostics):
1386       look through the short list of active diag. (instead of the long list)
1387       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1388    
1389    checkpoint57a_post
1390    o this set of changes restores TAMC compatibility
1391      tested for global_ocean.90x40x15 adjoint on trough
1392      (what a pain)
1393    
1394    checkpoint57a_pre
1395    o some modifs in tools/build_options for sunos
1396    o call ctrl_pack for ctrl at end for optimcycle=0
1397    
1398    checkpoint57
1399    o add horizontal bi-harmonic viscosity for vertical velocity
1400      - new parameter viscA4W (defaults to viscA4)
1401      - affects only non-hydrostatic code
1402      - to be done: no-slip lateral boundary conditions
1403    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1404    o implement Implicit Vertical advection for pTracers
1405    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1406      (implemented also for implicit vertical diffusion & advection)
1407    o OBCS: extend application of tracer open boundary conditions
1408      to a strip beyond the boundary of width Olx/Oly
1409    o add call monitor to TAF set of required calls (flow directives)
1410      and include in natl_box_adjoint
1411    o untangle a few ifdefs related to cost, ctrl, autodiff
1412      untangel a few ALLOW_ECCO_OPTIMIZATION
1413    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1414      (theta2, salt2 in ecco_cost_weights)
1415    
1416    checkpoint56c_post
1417    o OBCS as control variables
1418      - update ctrl_ad_diff.list, obcs_ad_diff.list
1419      - remove balance of obcs controls from default
1420      - fix index bug nobcs in ctrl_init
1421      - fix dummy fields filen in ctrl_pack
1422      - add dummy weights for obcs
1423    o lsopt: comment out fort.94 output
1424    o optim:
1425      - remove unnecessary header files
1426      - adjusted namelists
1427      - add xerbla.F to Makefile
1428    o exf:
1429      - multiple modifications of exf_check_range
1430      - unit change in exf_init_runoff from [m/year] to [m/s]
1431    o mdsio:
1432      - i/o-vector change debugLevel from debLevA to debLevB
1433    
1434    checkpoint56b_post
1435    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1436      is called from DO_THE_MODEL_IO
1437      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1438      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1439      - clean up PTRACERS_WRITE_TIMEAVE a little
1440    o add another verification experiment that tests both the cfc-pkg and
1441      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1442      reactive tendencies treated inline with regular timestepping
1443    o testreport previously did a lousy job of comparing small numbers, so
1444      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1445      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1446      testreport.
1447    o ptracers_monitor: bug fix for MPI
1448    
1449    checkpoint56a_post
1450    o GCHEM: finish reorganizating the package
1451      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1452        (introduces another 3D-array for each passive tracer, but only if
1453        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1454        gchemTendency is not needed because the timestep is done separately)
1455      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1456      - GCHEM is now---more or less cleanly---separate from PTRACERS
1457      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1458        so clear to me how that should be done in a general way.
1459    o CFC: improve formatting of output in CFC_ATMOS
1460    o PTRACERS:
1461      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1462        that ALL experiments with ptracers enable can be checked. This makes
1463        GCHEM_MONITOR obsolete.
1464      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1465        monitorFreq
1466      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1467    o add PTRACERS (PTR0[1-5]) to testreport output
1468    o exf_check_range:
1469      * default changed to .TRUE.
1470      * will check values for niter0 if debLevA, every timestep if debLevB
1471      * STOP in exf_check_range if 'out of range'
1472      * range chosen generous to allow for potential extema
1473      TBD: a version with stricter range
1474           permitted range would be runtime parameters
1475    o GMredi:
1476      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1477      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1478      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1479    o GCHEM:
1480      - move call to GCHEM_FORCING_SEP, so that it is now called before
1481        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1482      - introduced a useGCHEM runtime flag and applied it everywhere.
1483      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1484        this flag is now only visible within GCHEM-pkg routines.
1485      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1486        be replaced by a 3D array that is computed before thermodynamics; for
1487        this, the tracer ID iTracer had to be included into the parameter list
1488        of ptracers_forcing
1489      - set up forward_step to call gchem_forcing, that will replace
1490        gchem_forcing_int in ptracers_forcing
1491      - cleaning up
1492    o small cleaning of exch2: remove files that are also in eesupp/src
1493    
1494    checkpoint56
1495    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1496    o mnc: cleanup "full" files--fixes out-of-memory problem
1497    o ECCO-GODAE
1498      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1499      * fully merged and updated from SIO code
1500        windstress sign change affects
1501        - exf_inscal_[u/v]stress
1502        - sign of xx_tau[u/v] adjustments
1503        - signs in cost_scat
1504      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1505      * natl_box_adjoint updated and compressed
1506      * 2-level checkpoint switch added
1507        (tested in EXP. 1 of natl_box_adjoint)
1508      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1509    o SVD
1510      * first complete, non-hacked version for SVD calculations
1511      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1512        performed via direct access files admtlm_vector.it????
1513        (via ctrl_[un]pack)
1514      * optimcycle is used for ARPACK iteration counter
1515        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1516      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1517        and add linear transforms where necessary
1518      * controls are initial/final SST, SSS (can be extended; need to check
1519        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1520    o mdsio: filename info to both stderr, stdout
1521    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1522      from sign change
1523    
1524    checkpoint55j_post
1525    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1526      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1527    o add consistent build directories and .cvsignore files to verification
1528    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1529    o make all subroutines 30 or less characters in length for certain older
1530      compilers to work (a thorough search only turns up two routines in
1531      pkg/ptracers)
1532    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1533      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1534    
1535    checkpoint55i_post
1536    o change arrays for total vertical diffusivity (2.D if explicit,
1537      3.D if implicit) ; each ptracer uses its own background value.
1538    o added mnc/NetCDF output capability to ocn_compon_interf
1539      - added bits to verification/cpl_aim+ocn so that it can run on
1540        ITRDA and other clusters without the mpirun "-wd" option
1541    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1542      configuration
1543    o give MNC the ability to create additional files rather than
1544      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1545      - the default is just less than 2GB which is a practical limit
1546        on many systems
1547    o Compute the non-local term using either KPP vertical diffusivity (=default)
1548       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1549    
1550    checkpoint55h_post
1551    o add verification test "vermix"
1552    o remove all the *_ioinc flags and replace with the single global
1553      outputTypesInclusive flag
1554    o allow to set a vertical profile of vertical diffusivity for T & S
1555    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1556    o useMNC moved from data.mnc to data.pkg
1557    
1558    checkpoint55g_post
1559    o Renaming carbon AD experiments to comply with testreport conventions
1560    o Updating adjoint of Held-Suarez hs94.1x64x5
1561    o Fixing directives for non-ECCO forward_step, after ECCO directives
1562      have been fixed to avoid recomp. of do_oceanic_phys
1563      Works well for global_ocean.90x40x15,
1564      but recomp. issue remains for carbon
1565    o Updating adjoint output for natl_box_adjoint after
1566      pkg/ecco has been modified (see taga c55d_post)
1567    
1568    checkpoint55f_post
1569    o rename to timeave_init_fixed
1570    
1571    checkpoint55e_post
1572    o some delicate re-shuffle of store directives to avoid one
1573      extra call of do_oceanic_physics
1574      affects ecco_the_main_loop.F, do_oceanic_physics.F
1575      checkpoint_lev1_directives.h
1576    o NB: this may break global_ocean adjoint temporarily,
1577      but it is clear how to fix it. Will do later, need this now.
1578    
1579    checkpoint55d_post
1580    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1581    o ecco_cost_weights is modified to 1x1 runs
1582    o modifs to allow observations to be read in as
1583      single file or yearly files
1584    o enable to read exf forcing fields as either
1585      single file or yearly files (flag useExfYearlyFields)
1586    checkpoint55d_pre
1587    
1588    o switch between 2-level and 3-level checkpointing
1589    o add ability of MNC to write local and "partial" (eg. 2D slices where
1590      the full 3D field is never actually stored) arrays to NetCDF files
1591      with the correct (that is, the complete multi-dimensional) set of
1592      array indicies
1593      - used in mom_vecinv() to write the diagFreq output
1594      - tested (demonstrated) in verification/aim.5l_cs
1595    o further mnc-ification
1596      - add verification/lab_sea to the list with mnc setups
1597      - fix undefined mnc v-names in cd_code
1598      - add kpp to mnc output (both snapshot and timeave)
1599    o non-hydrostatic code
1600      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1601        in calc_gw.F
1602      - defaults to viscAh
1603      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1604        friction or Leith) in non-hydrostatic mode, as long as there is
1605        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1606    o pkg/cost
1607      extend simple cost functions to treat time mean quantities
1608      (T,U,V) via cost_accumulate_state from cost_tile
1609    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1610        be 2 times larger than the minimum size the advection scheme requires.
1611        now get a perfect conservation of salt in advect_cs test-exp (updated)
1612    o GGL90 (Gaspar's TKE mixed layer)
1613      - add horizontal diffusion of TKE, requires exchanges in
1614        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1615        default. In OPA there is no horizontal diffusion of TKE but the
1616        mixing coefficients are computed from a horizontal average of TKE of
1617        6 points or so. I think that diffusion has a little more physical
1618        justification.
1619      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1620        was in vain)
1621      - mask tke-variable in ggl90_init
1622    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1623    o fix biharmonic diffusion on CS-grid.
1624    o more obcs stuff
1625      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1626        for reading boundary values. This routine is called from
1627        obcs_prescribe_read
1628      - updated obcs_check
1629      - changed sponge layer relaxation parameter units for days to seconds
1630      - turned off sponge layer by default
1631      - changed argument list of OBCS_CALC to myTime+deltaTclock
1632      - fixed about 35 bugs in obcs_external_fields_load
1633    
1634    checkpoint55c_post
1635    o obcs stuff
1636      - new runtime flags useOBCSprescribe, useOBCSbalance
1637      - re-arranged obcs_calc
1638      - moved exf_getobcs to obcs_prescibe_read
1639        obcs_prescibe_read is called after ORLANSKI stuff
1640        and independent of it (executable can contain all).
1641      - updated obcs_check
1642      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1643        These may be necessary only if tangential velocities are
1644        prescribed at OB, not sure, needs testing.
1645    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1646      which simplifies the calls and passes the ifc check-bounds test
1647    
1648    checkpoint55b_post
1649    o add a 2D scalar, Z location, exchange_2 routine.
1650    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1651      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1652      affects advect_cs results (for the wrong reason): update output.txt
1653    o use a more standard discretization for biharmonic viscosity ;
1654     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1655      affects results of dome set-up: update output.txt
1656    o fix gad_advection.F (CubedSphere part), back to version 1.23
1657    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1658    
1659    checkpoint55a_post
1660    o merged code to
1661      * prescribe/read time-dependent open boundaries
1662        (works in conjunction with exf, cal)
1663      * sponge layer code for open boundaries
1664      * each boundary N/S/E/W now has its own CPP option
1665        (healthy for the adjoint)
1666    
1667    checkpoint55
1668    o up-to-date adjoint of previous breaks
1669      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1670      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1671      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1672      - carbon: * remove tr1-related adjoint verification
1673                * add ptracer as control variable
1674    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1675      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1676    
1677    checkpoint54f_post
1678    o in verification/carbin/ remove experiment related to
1679      ALLOW_PASSIVE_TRACER (array tr1 etc)
1680      code_ad/ input_ad/ results_ad
1681    
1682    o add two new packages
1683      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1684        + subject to optimization (memory)
1685      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1686        + subject to reordering (many GOTOs in the original code)
1687        + so far opps is called for every (i,j) point, and then operates in
1688          the vertical; one may want to reorder the scheme in order operate in
1689          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1690          fields)
1691    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1692      - all verification tests compile and run with linux_ia32_g77
1693      - defaults are compatible with current input files--nothing
1694        should change if you were not previously using MNC
1695      - MNC output has been added in numerous places (eg. timeave)
1696        but there are still a few writes not yet do-able with MNC
1697        (this is in progress)
1698      - flags now allow for either/or/both use of MDSIO and MNC and
1699        documentation will soon follow
1700      - numerous small formatting cleanups for ProTeX
1701    o add version info (via BUILD_INFO.h) to MNC and stdout
1702    
1703    checkpoint54e_post
1704    o add two new packages
1705      - pp81 (Packanowski and Philander, 1981), Richardson number and
1706        stratification dependent mixing
1707      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1708      - these scheme operate in a similar manner as KPP (without ghat, of
1709        course), however there is only one diffusivity that is used for both
1710        temperature and salinity (and passive tracers)ç
1711    o add offline package
1712    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1713      provided by Stephanie Dutkiewicz
1714    o genmake2: add ability to search for C compilers and cleanup test output
1715      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1716    
1717    checkpoint54d_post
1718    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1719    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1720      leading to additional shift by 5 days each year of integration
1721       (i.e. leading to considerable offset over the years)
1722    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1723    o start with no AB and no initial filtering (staggerTimeStep):
1724      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1725    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1726      (external loading & cpl import/export stay in forward_step.F)
1727    o update coupling interface to work with new staggerTimeStep
1728    o change MDSIO ptracers_pickup.
1729    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1730    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1731    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1732    
1733    checkpoint54c_post
1734    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1735      this affects (truncation error) output.txt of test-exp:
1736       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1737    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1738    o change Qnet to always be the net heat flux, (+upward).
1739      affects (truncation error) output of natl_box exp.: updated
1740    o define the max number of passive tracers in PTRACERS_SIZE.h
1741    o start to test mnc routinely in exp0
1742    o add sea-ice loading (sIceLoad) as a new forcing field.
1743    
1744    checkpoint54b_post
1745    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1746       impressive on Altix and Opteron systems)
1747    o diagnostics can now write NetCDF files through the mnc package
1748    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1749    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1750    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1751      affects (truncation error) output of lab_sea & natl_box exp.: updated
1752    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1753    
1754    checkpoint54a_post
1755    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1756    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1757    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1758    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1759      + internal_wave (shift in writing cg2d_ini_res)
1760    checkpoint54a_pre
1761    
1762    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1763      - modified verification/lab_sea and natl_box_adjoint accordingly
1764    
1765    checkpoint54
1766    checkpoint53g_post
1767    o prepare splitting of thermodynamics: store convect.counter in common block
1768    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1769      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1770    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1771    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1772    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1773    o restore adjointability
1774    
1775    checkpoint53f_post
1776    o modifications that affect AIM experiment results (update output.txt):
1777      - no advection of S at top interface Nr (pkg/generic_advdiff)
1778      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1779    o AIM pkg:
1780      - include stability function into surf.Flux derivative relative to Tsurf
1781      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1782    
1783    checkpoint53e_post
1784    o merged cylindrical coord configuration
1785    o added rotating_tank experiment
1786    checkpoint53e_pre
1787    
1788    checkpoint53d_post
1789    o faulks upgraded: re-generate output.txt that have changed:
1790       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1791    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1792    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1793    o added Sadourny discretization of Coriolis
1794      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1795      - re-enabled use of omega3 (useAbsVorticity)
1796    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1797      vector-invariant equations
1798      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1799    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1800      hopefully without new bugs
1801      - still to do: biharmonic friction for non-hydrostatic w
1802    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1803    o regenerated output for global_ocean_ebm (using -ieee)
1804    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1805      of mom_common/
1806      - simple re-arrangement of instructions within computing loop
1807    checkpoint53d_pre
1808    
1809    checkpoint53c_post
1810    o new version of coupler for AIM+thSIce and Ocean models
1811     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1812     - land: change Evaporation of snow
1813     - aim with thSIce: fix bug in snow-precip.
1814    o changes to calc_gw.F
1815     - bug fix for w^2 term near the bottom boundary
1816     - (hopefully) improve the lateral slip boundary condtions for use with
1817        partial/looped cells
1818      - because the bug fix changes two verification experiments anyway (exp5
1819        and plume on slope), change the lateral boundary condition from half slip
1820        to the value of no_slip_sides
1821    o ebm package wasnt quite up to the parallel task. Fixed that.
1822    o Adjoint of EBM package + verification
1823      * TLM OK
1824      * ADM not sufficient accuracy yet (needs further testing)
1825    
1826    checkpoint53b_post
1827    o Commiting new energy balance model to repository
1828      * package is pkg/ebm
1829      * verif. is verification/global_ocean_ebm
1830      * references are in ebm_driver.F
1831    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1832    C        Global thermohaline circulation. Part I:
1833    C        Sensitivity to atmospheric moisture transport.
1834    C        J. Climate 12(1), 71-82
1835    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1836    C        Global thermohaline circulation. Part II:
1837    C        Sensitivity with interactive transport.
1838    C        J. Climate 12(1), 83-91
1839    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1840    C        Destabilization of the thermohaline circulation
1841    C        by atmospheric eddy transports.
1842    C        J. Climate 7(12), 1870-1882
1843    o Will need long integration testing.
1844    checkpoint53b_pre
1845    
1846    o created pkg/mom_common in preparation for variable viscosity code
1847    o renamed and split ini_mnc_io
1848    o pkg/land: only liquid water can diffuse or run-off
1849    o AIM using land: soil wetness availability account for snow
1850    o added printMapIncludesZeros to EEPARMS namelist
1851    
1852    checkpoint53a_post
1853    o restore TAMC compatiility for exf_constants.h
1854      (no usage of _d in .h)
1855    o Additional storing in KPP in an attempt to fix
1856      TAMC problem with adjoint of KPP code.
1857      (no success...)
1858      Identical code works fine with TAF.
1859    o Fixed verification/natl_box_adjoint experiments.
1860      Initial conditions for Experiments 4 and 5 are now
1861      set to "SEAICE_initialHEFF=0", which is more reasonable,
1862      and hence gives results closer to that of Experiment 2.
1863      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1864    
1865    checkpoint53
1866    o stable checkpoint with up to date adjoint
1867      TLM tests only run for 1st grdchk at the moment. Its unclear if
1868      this is a code problem or a problem with resetting code for g_
1869      variables that is being autogenerated wrong.
1870      Otherwise:
1871       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1872       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1873         are both still in chaos following their security messes.
1874    
1875    checkpoint52n_post
1876    o various build (mostly genmake2) changes including:
1877      - ability to build/run more easily within Cygwin and MacOS X
1878      - more complicated Makefiles with a stronger dependence on Gnu Make
1879    o pkg/seaice modifications
1880      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1881        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1882        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1883      - changed proxy for geostrophic velocity and updated
1884        verification/lab_sea/results/* accordingly
1885      - removed ADI dynamic solver from pkg/seaice
1886      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1887        they caused a segmentation fault under certain circumstances
1888      - removed unused field WATR
1889    o bug fix in exf-package:
1890      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1891         now reflect that.
1892    o small fixes in the cal-package:
1893      - set reference date to first of January for the 'model'-calendar
1894      - failing of cal_CheckDate in cal_FullDate now actually results in a
1895        warning
1896    o small modifications in exf-package to increase flexibility:
1897      - change climtempfreeze from a constant to a runtime parameter that
1898        is specified in data.exf_clim (default = -1.9)
1899      - introduce runtime parameter windstressmax (default = 2.0) that is
1900        specified in data.exf
1901    o fix in pkg/thsice:
1902      - update Evap (Tsf changes) to be consistent with Latent heat flux
1903      - maintain snow precipitation unchanged (even if Tsf >=0).
1904     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1905    
1906    checkpoint52m_post
1907    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1908      this does not change any of the results, because myIter=0 in swfrac always
1909      lead to jwtype=2 (the default anyway), but the call makes little sense
1910      as a default
1911    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1912    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1913      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1914    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1915    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1916    o extending useSingleCpuIO option to work with new exch2 I/O format
1917      - old-style, missing-tile I/O is still accessible by defining CPP
1918        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1919    o monitor package can write to NetCDF files and/or STDOUT
1920    o fix re-definition bug in MNC_GRID_INIT_ALL()
1921    o doc/api_reference added
1922      - a framework for building an API Reference Manual using all
1923        the "protex" comments embedded in the code
1924      - see pkg/generic_advdiff, pkg/mnc for examples
1925    o MNC:
1926      - make myThid the last argument for all subroutines
1927      - new default for the grid files: NO halos
1928      - add useMNC and other run-time flags
1929      - separate per-file-group handling of the unlimited dimension
1930      - early initialization of MNC w/ flags read at the eeboot stage
1931        and lookup tables set in initialize_fixed
1932      - write all MNC output to a freshly-created directory
1933    o thermodynamics sea-ice (thsice) is now tested with testreport.
1934    o test exp. advect_cs: use the standard cs32 grid ; update output.
1935    o Added functionality to grdchk:
1936      pick global i,j,k position (or nearest wet) where to perform check.
1937    
1938    checkpoint52l_post
1939    o new land formulation:
1940      a) use ground enthalpy as prognostic variable to ensure exact
1941         energy conservation.
1942      b) account for water temperature and for latent heat of freezing
1943         in all processes (rain, run-off, ground storage)
1944      c) compute surface and ground temperature implicitly.
1945    o aim_v23 modification for new land model:
1946      a) Treat separately land / ocean / sea-ice surface fluxes
1947         to allow implicit computation of land & sea-ice surface temp.
1948      b) add snow precipitation.
1949    checkpoint52l_pre
1950    
1951    o fix problem (when 1 tile is empty) in min/max monitor.
1952    o fix bug in timeAve (u,vZetatave in common block)
1953    o no restoring terms under ice for pkg/seaice
1954    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1955    o bug fix for pkg/seaice pickups
1956    o change MNC call locations and add coordinate attributes
1957    o mask vorticity at the corner ; affects global_ocean.cs output
1958    o fix ini_curvilinear_grid ; test CS experiments with mpi
1959    o aim.5l_cs: modify sea-ice fraction input file ; update output
1960    o exf: Adding simple range check routine for exf fields after read
1961    
1962    checkpoint52k_post
1963    o removed top-level directory "diags"
1964      - we migrated these functions to pkg/timeave a long time ago
1965    o fixed bug introduced in pkg/monitor
1966    o accuracy ctrlprec = 32 insuffient for gradient checks using
1967      averaged fields (I/O via cost_averages)
1968      -> use ctrl.h in active_file*.F to control I/O precision.
1969    o paramter list of CALL ADTHE_MAIN_LOOP
1970    o added initial do_the_model_io to ecco
1971    o set all ...Freq to zero after cost_final
1972      taveFreq, dumpFreq, pChkptFreq
1973    o MAIN and ECCO differentiability restored
1974    
1975    checkpoint52j_post
1976    o fix nchklev in tamc.h for global_ocean...
1977    o Bringing flow and store directives up-to-date
1978    o Really weird thing!
1979      call do_the_model_io from the_main_loop with parameters
1980      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1981      TAF places a faulty re-call of initialise_varia
1982      after cost_final call which should not be there!
1983    checkpoint52j_pre
1984    
1985    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1986      error messages
1987    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1988    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1989      debug output
1990    o modfied mdsio_writefield.F to handle non-global files under exch2
1991    o update AIM Cubed-Sphere exp (aim.5l_cs):
1992      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1993    o update AIM Equatorial Channel exp:
1994      use standard aim_v23 pkg and change the SST fields to be more realistic.
1995    o globalFile now works with exch2
1996    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1997      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1998    o limit timeave output for hi-res integrations
1999    
2000    checkpoint52i_post
2001    o removed CPP_EEOPTIONS.h from verification/*/code
2002    o updated the tiling for global_ocean_pressure
2003    checkpoint52i_pre
2004    
2005    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2006      the old pkg/aim).
2007    
2008    checkpoint52h_pre
2009    o shortened offending lines in exch2_send_rx?.template
2010    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2011    o genmake2: add build & execute test for NetCDF code
2012    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2013      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2014    o added useSingleCPUIO flag to monitor.F and mon_out.F
2015    o added temporary hack for sea-ice dynamics on the cube:
2016      metric terms are ignored and it is assumed that
2017      there is no sea-ice on cube faces 1, 2, 4, and 5.
2018    
2019    checkpoint52f_post
2020    o added exch2 cube routines to pkg/exch2
2021    o modified hs94.cs-32x32x5 to use it
2022    o added new grid files to hs94.cs-32x32x5
2023    checkpoint52f_pre
2024    
2025    checkpoint52e_post
2026    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2027      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2028    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2029      to work with implicit vertical advection and AB ;
2030    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2031    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2032     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2033    checkpoint52e_pre
2034    
2035    o fix bug in impldiff when Nr=1 or Nr=2.
2036    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2037    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2038    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2039      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2040    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2041    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2042    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2043    
2044    checkpoint52d_post
2045    o re-tiled many expts to allow comparison in multi-processor mode
2046      - updated output accordingly
2047      - changed hs94.128x64x5 to use intial T from file rather than use the
2048        random number generator
2049    o add infrastructure in model routines for fizhi and gridalt packages
2050    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2051    o changes to permit hi-res, cubed-sphere, configuration
2052      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2053      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2054      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2055        of surface winds for the cube
2056      (A verification experiment, based on global_ocean.cs32x15, but with
2057       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2058       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2059       complete with example surface forcing files and matlab scripts to look
2060       at the output and compare it with that of global_ocean.cs32x15.)
2061    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2062       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2063       to conform to the common rule.
2064    o check-in the first version of the coupler + interfaces for multi-components
2065       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2066       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2067       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2068       - ocean and atmos. share the same horizontal grid (no interpolation).
2069       - exchanges between component and coupler is done in forward_step
2070    o new verification experiment, cpl_aim+ocn:
2071       coupled ocean - AIM atmosphere on cs32 grid.
2072    
2073    checkpoint52d_pre
2074    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2075    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2076    
2077    checkpoint52c_post
2078    o Fixing OPTIONS files for use of exf:
2079      - ALLOW_ECCO not needed
2080      - ECCO_CPPOPTIONS.h should not be included from
2081        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2082        as has been the case in the past
2083      - All cal/exf related options are currently set in
2084        single header file. Should remain so until we
2085        agree on a consistent new policy.
2086    o Removed all CPP options for cal package.
2087      cal has no more CPP options.
2088    o modified STOREs in GAD_ADVECTION
2089    o corrected key comp. for passkey
2090    
2091    checkpoint52b_post
2092    o new version: "thsice" of thermodynamic sea-ice pkg:
2093     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2094     - modify fluxes but do not change theta directly;
2095     - light cleaning of bulk_force pkg (still needed with thsice).
2096     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2097       + output_thsice.txt to test thsice & bulk_force pkgs.
2098    o put back grid & coriolis monitor output.
2099    checkpoint52b_pre
2100    
2101    o call "do_the_model_io" at the beginning (=> dump initial state)
2102    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2103    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2104      (need info on NUMBER_OF_PTRACERS)
2105    o missing PTRACERS headers in some routines
2106    o default tamc.h in pkg/autodiff supposed to crash
2107      to ensure proper customization
2108    
2109    checkpoint52a_post
2110    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2111      - moved surfaceTendencyTice from pkg/seaice to main code
2112      - subroutine FREEZE_SURFACE now limits only surface temperature
2113        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2114        => new output.txt for global_ocean.cs32x15 & global_with_exf
2115      - keep the old version of FREEZE for backward compatibility;
2116        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2117      - corresponding modifs for TAF directives
2118    o added surface flux output variables to TIMEAVE_STATVARS
2119    o time-averaged output for pkg/ptracers
2120    o fix problem with ECCO-related divided adjoint
2121      snapshot file was missing some ad-variables,
2122      but no warning issued by TAF
2123    
2124    checkpoint52a_pre
2125    o some bug fixes for #undef REAL4_IS_SLOW
2126    
2127    checkpoint52 = ecco_c52_e35
2128    o after testing adjoints of checkpoint51u_post
2129    
2130    checkpoint51u_post
2131    o this is the post-merge tag of the ecco-branch
2132      (needs another clean checkout and re-testing)
2133    o various natl_box_adjoint configs and results
2134      but no input fields
2135    o obcs adjoint not yet merged!
2136    o adding ECCO global 1x1 and 2x2 degree configs
2137    o updated/extended some store directives for seaice
2138    o pkg/ecco now containes ecco-specific part of cost function
2139    o top level routines the_main_loop, forward_step
2140      supersede those in model/src/
2141      previous input data.cost now in data.ecco
2142      (new namelist ecco_cost_nml)
2143    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2144    
2145    checkpoint51t_post
2146    o this is the pre-merge tag of the ecco-branch
2147    
2148    checkpoint51s_post
2149    o cleanup: removed various obsolete #define-s
2150    o pkg/grdchk
2151      - renamed 'ph-grd 3' to 'grad-res'
2152      - merged from ecco-branch
2153        (remaining bug fixes for obcs gradient checks)
2154      - additional high-precision output for testreport
2155        (grep for 'precision_grdchk_result')
2156    
2157    checkpoint51r_post
2158    o cleaned up or removed CPP_OPTIONS.h files
2159    o updated results for some of the tests to reflect the new
2160      optfiles (-ieee: -O0 instead of -O3)
2161    
2162    checkpoint51q_post
2163    o cd_code:
2164      - moved cd_scheme.F -> cd_code_scheme.F
2165      - separate read_checkpoint from cd_code_ini_vars.F
2166      - separated cd_code part from write_checkpoint
2167      - updated AD_SOURCE, generated .flow
2168      - added CD_CODE_VARS.h to the_main_loop
2169      - Moving cd_code specific store dir.s to pkg/cd_code
2170    o ctrl package totally restructured
2171      - pack/unpack now optional and decoupled from
2172        xx_/adxx_ I/O
2173      - ctrl_pack/unpack cleaned
2174        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2175      - confined inclusion of AD_CONFIG.h to where necessary.
2176    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2177    
2178    checkpoint51p_post
2179    o create initial cd_code package
2180      - WARNING: the initialization of fields within packages
2181        is broken because INI_FIELDS (where READ_CHECKPOINT is
2182        called) is called *before* PACKAGES_INIT_VARIABLES.
2183        This seems to be backwards since
2184        1) its important to initially zero the entire field including
2185           the "halo" region
2186        2) zeroing needs to be done *before* reading pickup info
2187           and the pickup call might or might not happen in any
2188           particular run
2189      - this needs an overhaul for R2
2190    o cleanup verification/*/code/GMREDI_OPTIONS.h
2191    o cleanup testreport
2192    
2193    checkpoint51o_post
2194    o bringing AD-related verif's up to date with genmake2
2195      - carbon/
2196      - global_ocean.90x40x15/
2197      - hs.94.1x64x5/
2198      - (front_relax/ )
2199    o (more) consistent directory structure for AD-related verif.'s
2200    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2201    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2202    o bug fix in find_alpha.F for MDJWF:
2203      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2204        change rho -> rho-rhoConst
2205      - replace call find_rho to find_rhonum
2206    o initialisation of rFlx extended to full array (required by TAF)
2207      and shifted to thermodynamics
2208    o removed PTRACERS.h in ptracers routine
2209    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2210    o Correcting initialisations for fVerU, fVerV.
2211    o helping TAF to recognize dependency on kUp for
2212      fVerU, fVerV
2213    o Replacing delZ by delR in pkg/ctrl/
2214    checkpoint51o_pre
2215    
2216    o undid all of cp51 pending some cleanups and discussion
2217    o added the [#include "AD_CONFIG.h"] statement to all files that need
2218       it for adjoint/tl #defines
2219     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2220     o removed tools/genmake since it no longer works
2221    
2222    checkpoint51n_post
2223    o modifications to make FREEZE flux visible to pkg/kpp
2224      - moved surfaceTendencyTice from pkg/seaice to main code
2225      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2226      - subroutine FREEZE now limits only surface temperature
2227        (this means new output.txt for global_ocean.90x40x15,
2228         global_ocean.cs32x15, and global_with_exf)
2229    o added surface flux output variables to TIMEAVE_STATVARS
2230    
2231    checkpoint51n_pre
2232    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2233    o added [#include "AD_CONFIG.h"] to all files that use the following
2234      defines:
2235      - ALLOW_ADJOINT_RUN
2236      - ALLOW_TANGENTLINEAR_RUN
2237      - ALLOW_ECCO_OPTIMIZATION
2238    
2239    checkpoint51m_post
2240    o incorporating changes to get TAMC/TAF working in genmake2
2241      - added new TAMC/TAF targets to the Makefile
2242      - various cleanups related to package handling
2243      - these changes should have no impact on the forward model
2244    
2245    checkpoint51l_post
2246    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2247     - faster algorithm for cal_addtime.F
2248     - higher precision arithmetic, where needed
2249     - pkg/exf *startdate variables changed from calendar date to
2250       model integration time
2251    
2252    checkpoint51l_pre
2253    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2254    o enable to apply restoring on S & T only in a latitude band.
2255    o update output (external_forcing_surf modif. change truncation errors)
2256       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2257    
2258    checkpoint51k_post
2259    o change default to: useNHMTerms=.FALSE.
2260     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2261       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2262     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2263        exp1, ideal_2D_oce
2264     - change data file of oceanic exp (leave the results unchanged for now)
2265       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2266    o set gravitySign automatically according to the vertical coordinate used
2267      (and change sign: back to "logical" value: +1 when R increases downward)
2268    o added an include barrier to the default CPP_OPTIONS.h and
2269      removed the #include "PACKAGES_CONFIG.h" from it
2270    o fix a bug in mom_fluxform (from chk51j_post)
2271    
2272    checkpoint51j_post
2273    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2274    o adjusted some flow directives (dynamics, thermodynamics)
2275    o added cubed-sphere case to test cost function
2276    o heckpoint_lev?_directives.h now include
2277      pkg-specific directives, whenever those are enabled.
2278    o Moving pkg-specific flow directives to corresponding pkg
2279      Moving pkg-specific differentiation list to corresponding pkg
2280      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2281      ---> conventions are
2282           - pkg_ad.flow
2283           - pkg_ad_diff.list
2284           - pkg_ad_check_lev?_dir.h
2285    
2286    checkpoint51i_post
2287    o merge of the branch-genmake2
2288      - knowingly breaks the older genmake
2289      - automatic generation of all ALLOW_${PKG_NAME} defines
2290      - new testreport supersedes older testscript
2291    o large number of package inclusion and header cleanups
2292    checkpoint51i_pre
2293    
2294    o new output for adjoin of global ocean vector invariant
2295    o fix for checkpoint of thermodynamic seaice and bulk_force
2296    o Steph gchem various cleanups
2297    
2298    checkpoint 51h_pre
2299    o fixed some single quotes
2300    o modify gchem pkg to be more versatile
2301    o modifications to clean up dic pkg
2302    o add pkg/cfc
2303    
2304    checkpoint51g_post
2305    o provide links for ARPACK and ADM*TLM
2306    o start removing verification/vero/
2307    o update AD-related stuff
2308      (in particular some IF-statements in model/src/ routines)
2309    o adding to verification/global_ocean.90x40x15/ adjoint of
2310      vector invariant setup
2311    
2312    checkpoint51f_post
2313    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2314    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2315      of tracer Green's fucntions for ocean inversion project.
2316    
2317    checkpoint51f_pre
2318    o Added on-the-fly spatial interpolation capability
2319        "USE_EXF_INTERPOLATION" to pkg/exf.
2320      - This is a temporary Cartesian-grid hack until
2321        the super-duper ESMF coupler becomes available.
2322      - See verification/global_with_exf/README for usage example.
2323      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2324        flags and modified pkg/seaice accordingly.
2325    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2326        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2327        non-local transport term.
2328    
2329    checkpoint51e_post
2330    o pkg/mom_vecinv:
2331      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2332      - add time-ave diagnostic of vorticity advection.
2333    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2334    o atmospheric geopotential: - include water vapor effect;
2335                                - use p^kappa in p* scaling.
2336    o land pkg: read initial state from files.
2337    o AIM : add stratospheric drag in the upper level
2338    
2339    checkpoint51d_post
2340    o change function ILNBLNK (=> last non-blank char.) to return zero
2341      (instead of the string length) when the string. char is empty
2342    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2343    o modif's to restore TAMC compatibility
2344      - avoid "_d" constructs in PARAMETER declarations
2345      - avoid interrupting lines by comment lines
2346    o Use cluster local disks for purely local I/O
2347      vs. globally visible disks needed for ctrl stuff
2348      (merged from ecco-branch)
2349      - new active_file_loc... and mdsio_..._loc routines
2350      - affected packages: autodiff, ctrl, grdchk, mdsio
2351    
2352    checkpoint51c_post
2353    o introducing integer flag debugLevel
2354      - debLevZero: suppress all output
2355      - debLevA: standard
2356      - debLevB: equivalent to current debugMode=.TRUE.
2357    o introducing pathname variable mdsioLocalDir for mdsio
2358      that can be specified at runtime
2359      (relevant for cluster I/O to local disk)
2360    `
2361    >>>checkpoint51b_post
2362    adjoint of ptracers
2363    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2364    o extended state in checkpoint_lev?, etc.
2365    o alternative ctrl/cost with tr1 or ptracer
2366    o new comlev1_bibj_ptracers
2367    o new ptracers.flow
2368    o made ptracers_forcing same as external_forcing_s
2369    o added verification for adjoint with ptracers
2370      - adm. grdchk fail so far
2371      - tlm. grdchk OK
2372      - checked tapelev/comlev recomputations: OK
2373    <<<checkpoint51b_pre
2374    
2375    checkpoint51a_post
2376    o added code for biogeochemistry package
2377      - new pkgs: dic, gchem
2378      - new subroutine in ptracers
2379    o modify code for biogeo packages
2380      - in model/src and pkg/ptracers
2381    
2382    checkpoint51
2383    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2384      - autodiff, ctrl, exf, grdchk, seaice
2385      kept separate packages
2386      - cost, ecco, obcs
2387    o updating verification/internal_wave, verification/lab_sea
2388      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2389    
2390    checkpoint50i_post
2391    o Preparing next differentiable checkpoint and sync
2392      of MAIN vs. ecco-branch
2393      - 1st step: this one is differentiable
2394      - 2nd step: next(! not this) checkpoint will have updated packages
2395                  from ecco-branch)
2396    
2397    checkpoint50h_post
2398    o new package "land": provide surface BC for AIM.
2399    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2400    o AIM: use true log-P extrapolation for near surface temp (= as in
2401        F.Molteni paper) ; update aim.5l_cs output.
2402    o New variable in PARM03 for more flexible pickups
2403    o somewhat cleaned package initialisation sequence for
2404      ctrl/ cost/ ecco/ in packages_... routines
2405    
2406    checkpoint50g_post
2407    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2408      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2409      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2410        made the default because of faster convergence than ADI
2411    
2412    checkpoint50f_post
2413    o exf totally restructured
2414      - replaced all exf_set_ routines by one generic exf_set_gen.F
2415        and made sure it's still differentiable
2416      - split exf_getffields.F into new exf_bulkformulae.F
2417      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2418      - updated adjoint/makefile and relevant verif. accordingly
2419    
2420    checkpoint50f_pre
2421     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2422          + change Evap over land. (update aim.5l_cs output)
2423     o added missing .cvsignores and made uniform across expts
2424     o changed configuration of tidal_basin_2d expt
2425     o added pkg/debug functions for tracing code in fatal crashes
2426     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2427     o new fn in pkg/monitor to stop model if solution grows too big
2428     o removed lots of single quotes from comments
2429    
2430    checkpoint50e_post
2431    o make KPP work with PTRACERS
2432     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2433       nearly a copy of kpp_transport_s
2434     - there is no analogue to SurfaceTendencyS, so I have to use
2435       gPtr(of the surface layer) instead
2436    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2437    checkpoint50e_pre
2438    
2439    checkpoint50d_post
2440    o change kpp output from multiple-record state files to single-record state
2441      files analogous to write_state.F
2442    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2443      analogous to the cg2d-related output.
2444    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2445      so that writing to internal file fn (with length 512) fails.
2446    checkpoint50d_pre
2447    
2448    checkpoint50c_post
2449    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2450    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2451    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2452    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2453    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2454    
2455    checkpoint50c_pre
2456    Merging from release1_p13:
2457    o bug fix for pkg/seaice dynamic solver
2458    o Added SEAICE_initialHEFF to pkg/seaice
2459    
2460    checkpoint50b_post
2461    o store u*,v* in gU,V instead of in guNm1,gvNm1
2462    o in order to put the momForcing out of the Adams-Bashforth:
2463      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2464      to timestep.F
2465    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2466    o re-generate output for highly sensitive test-exp:
2467       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2468    
2469    checkpoint50b_pre
2470    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2471    o corrected CPP option mismatch in exf_Bulk... functions for case
2472      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2473    
2474    checkpoint50a_post
2475    o Bug fix for merging between c50 and KPP.
2476      ikey was passed from thermodynamics to kpp_calc via
2477      common block rather than being recomputed in kpp_calc,
2478      in contradiction with new key itdkey.
2479      New key ikppkey created, and tamc.h headers updated.
2480    
2481    checkpoint50
2482    - 2nd step of merge with ecco-branch:
2483      merge changes in ecco-branch back into main trunk
2484    - bug fix in find_alpha
2485    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2486    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2487    - merged some sliced AD support routines
2488    
2489    checkpoint49
2490    merged from ecco-branch:
2491    o exf:
2492      - Enable initialisation of forcing fields to constant
2493        (runtime) values.
2494      - in exf_getffields.F
2495        Reduce i-/j-loop to interior domain, discarding overlaps.
2496        That also fixes wrong TAF-key computations for key_1, key_2
2497        with bulf formulae.
2498      - exf_init.F modify #ifdef for exf_init_evap
2499      - exf_getffieldrec.F, ctrl_getrec.F
2500        The following INT-usages are not safe:
2501          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2502          fldcount = int(fldsecs/fldperiod) + 1
2503        and were modified.
2504    o autodiff: checkpoint_lev...
2505      - updated storing for bulk formulae (some arrays were missing)
2506      - added state for seaice package
2507      - synchronized with main branch
2508    o DIVA:
2509      Modif.s in
2510      - the_main_loop.F
2511      - the_model_main.F
2512      and added cost_final_restore.F cost_final_store.F
2513      o With these changes, it is possible to fully separate
2514        the first forward run to compute the cost function (mdthe_main_loop)
2515        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2516        into separate model executions.
2517        This enables better tuning of DIVA to given queue sizes.
2518      o Loss of cost function value in consecutive DIVA runs is
2519        fixed by storing to 'costfinal' file.
2520      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2521        beginning/end of adjoint integration is accounted for.
2522      The current changes apply to TAF-1.4.26.
2523      TAF has one remaining bug, requiring one manual change
2524      (see MITgcm manual).
2525    o cal: synchronized between MAIN and ecco-branch
2526    
2527    checkpoint48i_post
2528    o Changes to restore differentiability of code w.r.t. previous tag
2529      (mostly adding new routines to make list and replacing
2530      pressure by totPhiHyd).
2531    o Updated and merged grdchk package
2532      - has both ADM and TLM checks
2533      - works for single- and multi-proc.
2534      - output cleaned
2535      - worked successfully for parallel DIVA
2536    o genmake:
2537      - Adding -platform=SP4
2538      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2539    o Modif. for DIVA:
2540      ctrl_unpack should not be called in intermediate DIVA interval.
2541      (similar thing would apply for active files such as
2542      tbar, sbar, psbar, which should not be reinitialised;
2543      only relevant for ecco-branch)
2544    
2545    checkpoint48h_post
2546    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2547    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2548    o Added SEAICE_initialHEFF to pkg/seaice
2549    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2550    
2551    checkpoint48g_post
2552    --- EOS:
2553    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2554      store total Potential in totPhyHyd for diagnostics & EOS.
2555    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2556    --- Pressure/geopotential gradient:
2557    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2558    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2559      ( changes results of global_ocean_pressure )
2560    o NLFS + z-coord.: add eta*Rho' contribution.
2561    o accurate phiHyd when using interface-W at the middle between 2 centers
2562     ( changes results of ideal_2D_oce )
2563    o includes r* 2nd term in potential gradient.
2564    
2565    checkpoint48f_post
2566    Merging from release1_p12:
2567    o Modifications for using pkg/exf with pkg/seaice
2568      - improved description of the various forcing configurations
2569      - added basic radiation bulk formulae to pkg/exf
2570      - units/sign fix for evap computation in exf_getffields.F
2571      - updated verification/global_with_exf/results/output.txt
2572    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2573      (SBO) core products, including oceanic mass, center-of-mass,
2574      angular, and bottom pressure (see pkg/sbo/README.sbo).
2575    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2576      to avoid negative values in shallow regions.
2577      - updated verification/natl_box/results/output.txt
2578      - updated verification/lab_sea/results/output.txt
2579    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2580    o Added useSingleCpuIO option (see PARAMS.h).
2581    o Updated useSingleCpuIO option in mdsio_writefield.F to
2582      work with multi-field files, e.g., for single-file pickup.
2583    o pkg/seaice:
2584      - bug fix in growth.F: QNET for no shortwave case
2585      - added HeffFile for specifying initial sea-ice thickness
2586      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2587    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2588      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2589    o pkg/seaice:
2590      - adjoint-friendly modifications
2591      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2592    
2593    checkpoint48e_post
2594    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2595    o dynamics: change definition of computational domain & adapt mom_fluxform
2596      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2597    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2598        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2599        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2600        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2601        inverted_barometer solid-body.cs-32x32x1
2602      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2603    
2604    checkpoint48d_post
2605    o in preparation for r*:
2606     a) use pre-computed gradient of hydrostatic potential:
2607        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2608     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2609        => affects results of glob_oce_pressure (different truncation error)  
2610      update output.txt of ideal_2D_oce & global_ocean_pressure
2611    
2612    checkpoint48d_pre
2613    o in preparation for r*:
2614      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2615      pass the 2 comp. of the grad. as arguments to momentum S/R.
2616      but for the moment, only used if it does not change the results.
2617    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2618    
2619    checkpoint48c_post
2620    Modifications in treatment of initial flux forcing controls
2621    to avoid extra storing of flux fields.
2622    
2623    checkpoint48c_pre
2624    o Added tidal_basin_2d experiment (currently 1D!)
2625    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2626    
2627    checkpoint48b_post
2628    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2629     (modification to pressure gradient not yet implemented)
2630    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2631      (for U & V) that are used for vertical advection of momentum.
2632    
2633    checkpoint48a_post
2634    o In preparation for r*, use temp. array to compute vertical transport
2635       in flux-form momentum pkg. => change results of few test-exp.
2636      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2637                        lab_sea, natl_box & plume_on_slope
2638    
2639    checkpoint48
2640    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2641    
2642    checkpoint47j_post
2643    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2644    o moved adexch from forward_step to addummy_in_stepping
2645    o added exch in ctrl_map_...
2646    o aveFreq.=0. at end of cost_final to avoid overwrite in
2647      reverse checkpointing loop
2648    o Yet more changes in gmredi:
2649      * adgmredi_calc_tensor
2650        avoiding all recomputation of gmredi_slope_limit
2651      * adgmredi_x/y/rtransport
2652        added flag for excessive storing to avoid recomp. of
2653        u/v/rtans, dTdx/y/z
2654        -> this is not really necessary and very memory-consuming
2655      * adgmredi_slope_psi:
2656        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2657      * gmredi_slope_limit
2658        re-activated full calculation of taperfct for case 'ac02'
2659    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2660    
2661    checkpoint47i_post
2662    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2663    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2664      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2665    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2666    o gmredi: fix few bugs.
2667    
2668    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2669    This will be a good checkpoint to plug into the ecco-branch.
2670    o few modif.'s to get latest version adjointed
2671      (mainly kick out code in ini_linear_phisurf)
2672    o modif's to run adjoint with exactConserv
2673    o case GM_BOLUS_ADVEC should be cleaned
2674      S/R gmredi_slope_psi should be cleaned
2675    o verification/carbon now has exactConserv=.TRUE.
2676    
2677    checkpoint47g_post
2678    o time-average AIM output: becomes independent from statvars time-average
2679      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2680    o After TAF bug fix:
2681      Tested adjoint of gmredi package.
2682      Tests were done with checkpoint47 rather than with latest
2683      checkpoint47f_post since the latter is broken for the adjoint
2684      verification/carbon/ contains both ADM and TLM gradient checks.
2685    Here they are, before they get changed/lost/stolen.
2686    Mostly modif.'s to fix numerical sensitivities.
2687    Gradient checks OK for
2688    - GM_taper_scheme:
2689      * clipping
2690      * ac02
2691      * linear
2692      * glw91
2693      * dm95
2694      * ldd97
2695    - GMREDI_OPTIONS:
2696      * GM_VISBECK_VARIABLE_K
2697      * GM_NON_UNITY_DIAGONAL
2698      * GM_EXTRA_DIAGONAL
2699      * GM_BOLUS_ADVEC
2700    in conjunction with data.gmredi parameters to be checked in
2701    in a few minutes under verification/carbon/code/
2702    
2703    checkpoint47f_post
2704    Merging from release1_p10:
2705    o modifications for using pkg/exf with pkg/seaice
2706      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2707        and SEAICE_EXTERNAL_FLUXES
2708      - pkg/exf CPP options EXF_READ_EVAP and
2709        EXF_NO_BULK_COMPUTATIONS
2710      - usage examples are Experiments 8 and 9 in
2711        verification/lab_sea/README
2712      - verification/lab_sea default experiment now uses
2713        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2714    
2715    checkpoint47e_post
2716    o created a tag prior to creating a branch
2717    
2718    checkpoint47d_post
2719    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2720      at the bottom boundary had an erroneous half slip boundary condition
2721    o added bottom drag and no slip boundary condition capabilities to
2722      oceanic pressure coordinates code
2723    o added new verification experiment global_ocean_pressure, this experiment is
2724      also described in the tutorial section of the manual
2725    checkpoint47d_pre
2726    
2727    checkpoint47c_post
2728    o Added a verification experiment for a global cubed-sphere ocean run
2729      -  verification/global_ocean.cubed32x32x30
2730      -  uses pkg/therm_seaice and pkg/bulk_forcing
2731    
2732    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2733    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2734      when using P-coordinate; only implemented for atmospheric config.
2735    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2736      NOTES: requires option NONLIN_FRSURF to be "#define".
2737    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2738    
2739    checkpoint47b_post
2740    Merging from release1_p9:
2741    o pkg/seaice
2742      - removed GOTO's and added taf directives
2743      - double precision constants to reduce the g77 (Linux)
2744        to F77 (SGI) differences reported in release1_p8
2745    o tools/genmake
2746      - added SGI options
2747    o verification/testscript
2748      - updated to that of checkpoint47a_post
2749    o verification/global_ocean.90x40x15/input/eedata
2750      - modified for SGI f77 compatibility
2751    o verification/lab_sea
2752      - added description of sea-ice model
2753      - added missing matlab routines
2754      - added test of thermodynamics parallelization
2755    
2756    checkpoint47a_post
2757    o new pkg: aim_v23
2758     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2759       for now, keep the same surface forcing as before.
2760     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2761     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2762     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2763    o add diagnostic of surface correction term in monitor output
2764    
2765    o bulk_force and therm_seaice
2766    - Two packages:  bulk_force (Bulk forcing)
2767      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2768    - Earlier integration from Stephaine Dutkiewicz
2769      and Patrick Heimbach.
2770    - Two ifdef statements for compile time,
2771       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2772    
2773    checkpoint47
2774    differentiable version of checkpoint46n_post
2775    o bug fix in quasihydrostaticterms
2776    o * "clean" adjoint code (in terms of extensive recomputations)
2777        can now be obtained for all GMREDI options (i.e. for
2778        - GM_VISBECK_VARIABLE_K
2779        - GM_NON_UNITY_DIAGONAL
2780        - GM_EXTRA_DIAGONAL
2781        - GM_BOLUS_ADVEC )
2782      * However, wrong gradient check problem remains unsolved.
2783      * New CPP options have been introduced for different
2784        tapering schemes
2785    o external_fields_load now part of differentiation list
2786    o pressure needs multiple storing;
2787      would be nice to have store_pressure at beginning or
2788      end of forward_step, e.g. by having phiHyd global (5-dim.)
2789      (NB: pressure is needed for certain cases in find_rho,
2790      which is also invoked through convective_adjustment).
2791    o recomputations in find_rho for cases
2792     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2793    o #define ATMOSPHERIC_LOADING should be differentiable
2794    o ini_forcing shifted to begining of initialise_varia
2795    o Incorporating QNVS line search routines into MITgcm
2796      (this is separate code, and therefore not under pkg)
2797      lsopt/, optim/
2798    o Updated verification/carbon/
2799      - #define GM_VISBECK_VARIABLE_K
2800      - GM_taper_scheme    = 'ldd97'    
2801    
2802    checkpoint46n_post
2803    Merging from release1_p8:
2804    o verification/natl_box:
2805      updating new external_fields_load routine
2806    o New package: pkg/seaice
2807      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2808      The sea-ice code is based on Hibler (1979-1980).
2809      Two sea-ice dynamic solvers, ADI and LSR, are included.
2810      In addition to computing prognostic sea-ice variables and diagnosing
2811      the forcing/external data fields that drive the ocean model,
2812      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2813      The implied surface heat flux is then stored in variable
2814      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2815      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2816      non-local transport term.  Because this call precedes model
2817      thermodynamics, temperature under sea-ice may not be "exactly" at
2818      the freezing point by the time theta is dumped or time-averaged.
2819      N.B.: fairly large differences in accuracy occur across
2820            different platforms/compilers; comparison between
2821            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2822            generated output gives:
2823       T           S           U           V
2824      C D M    c        m  s        m  s        m  s        m  s
2825      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2826      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2827      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2828    
2829      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2830    o GAD:
2831      - generated new common blocks to account for call of
2832        same gad routines with differing traceridentities
2833        (needed to modify tracerIdentity indices in GAD.h)
2834      - generated separate common blocks for case useCubedSphereExchange
2835        (Department of Futurology)
2836      - parameter lists to gmredi_?transport: added tracerIdentity
2837      - added new key indices to tamc.h
2838    o external_fields_load:
2839      - added this routine to TAF list
2840      - needed to make some common blocks global and additional storing
2841        along the same lines as exf package (checkpoint_lev?_directives.h)
2842    o exf:
2843      updated external forcing package
2844      - bug fixes carried over from ecco-branch
2845        (missing OBCS_OPTIONS.h in two routines)
2846      - enable easy to use "no forcing".
2847      - added exf I/O for atmospheric loading
2848      - added exf I/O for runoff data
2849      - transfered scaling between exf <-> MITgcm to exf namelist
2850    o Adding new verification experiment global_with_exf.
2851      This verification experiment is almost identical to the
2852      global_ocean.90x40x15 experiment, except that it uses
2853      the exf (and cal) package instead of the
2854      external_fields_load routine (cf README file).
2855    
2856    checkpoint46m_post
2857    o modified testscript to return -- when there are no lines of "%MON" output
2858    o added new flag "quasiHydrostatic" for QH mode
2859      and new routine quasihydrostaticterms()
2860    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2861      New routine: mom_u_coriolis_nh()
2862    o fixed sign of non-hydrostatic metric terms in u and v equations.
2863      Depend on correct sign of gravitySign.
2864    o added work.pc* to .cvsignore in aim directories using ifc
2865    o introduced flag for controllin non-hydrostatic metric terms
2866    o removed gravitySign from PARM04
2867    o switched to g77/ifc from pgf77 in aim experiments
2868    
2869    checkpoint46l_post
2870    o made convective adjustment work with pressure coordinates:
2871     - changed the direction of k-loop in convective_adjustment.F for the
2872       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2873     - adjusted the reference pressure k-index in convective_adjustment.F
2874     - adjusted the convection condition in convect.F (in analogy to
2875       calc_ivdc.F)
2876     - convective_adjustment no longer computes anything on the halos
2877     - removed the warnings about negative salinity from find_rho.F and
2878       find_alpha.F; instead the new routine look_for_neg_salinity, called
2879       at the beginning of find_rho, find_alpha, and find_beta, does a
2880       check of the entire slice, if CPP-option
2881       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2882    checkpoint46l_pre
2883    
2884    checkpoint46k_post
2885    o fixed the verification/global_ocean.90x40x15 experiment:
2886     - new bathymetry (the world according to A., JMC, and M.)
2887     - new initial fields and forcing fields (*.bin files)
2888     - new POLY3.COEFFS (for the next release one should switch to a full
2889       equation of state: JMD95P or MDJWF)
2890     - fixed several errors and redundancies in the data file
2891     - experiment uses looped cells
2892     - added matlab directory with diagnostic scripts for plotting of output
2893    
2894    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2895     - read AIM physics parameters from a file (data.aimphys)
2896     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2897    
2898    checkpoint46j_post
2899    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2900    o move wVel computation at the end of the time step, in S/R integr_continuity
2901    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2902    o update timeave pkg for wVel diagnostic.
2903    checkpoint46j_pre
2904    
2905    checkpoint46i_post
2906    o Clean up AIM package (and keep the results unchanged):
2907      include CPP_OPTION and use IMPLICT NONE in all routines ;
2908      declare all the variables _RL ; use _d 0 for all numerical constants.
2909      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2910    
2911    checkpoint46h_post
2912    o cleaned up the use of rhoNil and rhoConst.
2913      - rhoNil should only appear in the LINEAR equation of state, everywhere
2914        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2915        and the dynamical equations are all divided by rhoConst
2916    o introduced new parameter rhoConstFresh, a reference density of fresh
2917      water, to remove the fresh water flux's dependence on rhoNil. The default
2918      value is 999.8 kg/m^3
2919    o cleanup up external_forcing.F and external_forcing_surf.F
2920      - can now be used by both OCEANIC and OCEANICP
2921    checkpoint46h_pre
2922    
2923     Added code to convert surface volume flux (fresh water) into
2924     a mass flux when using P coordinates in the ocean (OCEANICP).
2925     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2926    
2927    checkpoint46g_post
2928    o Include a new diagnostic variable phiHydLow for the ocean model
2929      - in z-coordinates, it is the bottom pressure anomaly
2930      - in p-coordinates, it is the sea surface elevation
2931      - in both cases, these variable have global drift, reflecting the mass
2932        drift in z-coordinates and the volume drift in p-coordinates
2933      - included time averaging for phiHydLow, be aware of the drift!
2934    o depth-dependent computation of Bo_surf for pressure coordinates
2935      in the ocean (buoyancyRelation='OCEANICP')
2936      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2937        Theta, Salinity, and Pressure in the parameter list. This routine is
2938        presently contained in find_rho.F. This routine does not give the
2939        correct density for 'POLY3', which would be a z-dependent reference
2940        density.
2941    o cleaned up find_rho
2942      - removed obsolete 'eqn' from the parameter list.
2943    o added two new verification experiments: gop and goz
2944      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2945    checkpoint46g_pre
2946    
2947    checkpoint46f_post
2948    o Enable tangent linear (forward mode) gradient checks:
2949      - extended active file handling to g_... files
2950      - added TANGENT_SIMULATION to theSimulationMode
2951      - extended grdchk package accordingly
2952    o added tangent linear setup in verification/carbon/code_ftl
2953    o added adjoint setup in verification/front_relax/code_ad
2954    
2955    checkpoint46e_post
2956    o Added new equation of state -> MDJWF
2957      - EOS of McDougall et al., 2002, JAOT, submitted
2958      - caveat: the equation of state is only valid for a smaller (more
2959        realistic?) range of values than JMD95P/Z and UNESCO
2960      - added masks to the calculation of pressure in store_pressure
2961      - added more check values for density in check_eos (ini_eos.F), some of
2962        the old check values are out of the range of the MDJWF-eos, so don't
2963        expect perfect matches for those
2964    checkpoint46e_pre
2965    
2966    checkpoint46d_post
2967    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2968      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2969      case of pressure coordinates. eosType='JMD95Z' in
2970      combination with buoyancyRelation='OCEANICP' now causes an error.
2971    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2972      in find_alpha/beta.
2973    checkpoint46d_pre
2974    
2975    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2976      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2977    
2978    checkpoint46c_post
2979    o Changes necessary for ocean in p-coordinates
2980     -  Added new buoyancy relation = 'OCEANICP'
2981     -  Added new parameters = gravitySign (this used to be contained inside
2982        the factor dRdZ which I added when we first switched to R coordinates).
2983     X GM/Redi is not compatible (yet)
2984     X bottom drag and no-slip need to be debugged.
2985    checkpoint46c_pre
2986    
2987    checkpoint46b_post
2988    o Added new equation of state -> JMD95Z and JMD95P
2989      - EOS of Jackett and McDougall, 1995, JAOT
2990      - moved all EOS parameters into EOS.h
2991      - new routines ini_eos.F, store_pressure.F
2992    o Added UNESCO EOS, but not recommended because it requires
2993      in-situ temperature (see JMD95)
2994    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2995      unesco.f to be used with POLY3
2996    checkpoint46b_pre
2997    
2998    checkpoint46a_post
2999    o Added (atmospheric) pressure loading
3000      - new field in FFIELDS.h, etc...
3001      - new cpp flag ATMOSPHERIC_LOADING
3002    o Changed hFacC to _hFacC in calc_phi_hyd.F
3003    o Added SHORTWAVE_HEATING to some files for consistency
3004    checkpoint46a_pre
3005    
3006    checkpoint46
3007    further merges from release1_p5
3008    o new ctrl package
3009      - adopted from ECCO environment to enable optimization
3010      - added Eliassen Palm fluxes to controls
3011    o added Eliassen Palm flux controls to gradient check package
3012    o cost package
3013      - Compatible with new ctrl package
3014      - added Eliassen Palm cost hooks
3015      - modif's of existing cost functions
3016    o Adjoint-related bug fixes in kpp:
3017      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3018      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3019    o autodiff package
3020      - flow directives:
3021        + new for S/R do_the_model_io
3022        + enhanced for S/R checkpoint
3023        + new gmredi.flow
3024      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3025        disable adcommon.h/g_common.h by default.
3026      - fixed problem for adjoint of global_max
3027    o modified verification/carbon/
3028    o New setup for adjoint of global_ocean
3029    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3030    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3031    o incorporated hooks for sponge layer code (external_forcing.F)
3032    
3033    checkpoint45d_post
3034    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3035    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3036      (affects plume_on_slope "cg2d" output)
3037    o add new parameter deltaTfreesurf for free-surface time stepping
3038    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3039    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3040    o change phiMin in exp1 (to agree with documentation)
3041    o add new flags:
3042     - T,S forcing inside/outside Adams-Bashforth
3043     - turn off temp,salt advection and/or forcing
3044     - for each tracer, define internal flag for multiDimAdvection & A-B
3045    o monitor: change definition of KE to check conservation of Energy
3046    
3047    checkpoint45c_post
3048    o Removed f90 comments ("!")
3049    o Modified initialisations to enable exf package for MITgcm
3050      (without invoking ECCO_PACKAGE).
3051    o modifications to gradient check package (Martin Losch)
3052      - enable centered differences
3053      - modified format of standard output
3054    
3055    checkpoint45b_post
3056    o cleaned exchange calls in cg2d
3057    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3058    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3059      to configure barotropic setup (Martin Losch)
3060    o moved some initialisations within bi,bj loop in dynamics
3061      (TAF flow dependency)
3062    o in initialise_varia, moved call packages_init_variables
3063      before convective_adjustment_init
3064      (corresponding adjustment of TAF tape initialisation).
3065    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3066    
3067    checkpoint45a_post
3068    o compute Rho over the whole domain (extend iMin,jMin indices)
3069    o specific exchange for X-slice domain (case Ny=1)
3070    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3071    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3072    
3073    checkpoint44h_post = checkpoint45
3074    o Fix to restore differentiability:
3075      place at which packages_init_variables is called in
3076      initialise_varia is crucial for reverse control flow.
3077    o modifications in GMRedi to enable stable adjoint
3078      (corresponding modif's in thermodynamics, dynamics)
3079    o added missing hook for sponge layer code in external_forcing
3080    o modified test cost functions
3081    o storing in gad_advection (plus removal of write(0,*)!
3082    o missing headers TR1.h added in convective_adjustment routines
3083    o errorMessageUnit set non-equal zero in eeboot
3084      (conflict on some platforms, e.g. IBM SP3)
3085    o modified carbon verif.
3086    
3087    checkpoint44h_pre
3088    o vertical grid option: allow to put the Interface at the middle between
3089      2 cell-centers ; replace delZ in pkg/kpp by drF.
3090    o GM Advective form: Tracers are advected using the residual transport (=
3091      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3092    
3093    checkpoint44g_post
3094    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3095      results) ; ifdef missing in thermodynamics.F
3096    
3097    checkpoint44f_pre,checkpoint44f_post
3098    o added PTRACERS package
3099      This allows an arbitrary number of passive tracers to be integrated
3100      forward simultaneously with the dynamicaly model.
3101      + Implemented so far:
3102        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3103        - I/O and checkpointing
3104        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3105      + Not implemented so far:
3106        - KPP
3107        - OBCS
3108      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3109        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3110        line in data.pkg.
3111      + This package is disabled by default since it increases storage.
3112    
3113    
3114    o testscript: added -cleanup option
3115    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3116                 b) enable to filter 2D fields.
3117    
3118    checkpoint44e_pre,post
3119    o re-wrote convective adjustment to use pre-calculated weights
3120      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3121      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3122      Original calls to convect() still in place.
3123    
3124    chkpt44d_pre,post
3125    o added missing EXCLUDE_MONITOR flags
3126    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3127      (incompatible typ in MIN/MAX expressions caused problems
3128      on IBM SP3)
3129    o in genmake added variable MAKEDEPEND
3130      plus resetting for case SunOS
3131    o added timer_stats.c routine for IBM SP3
3132    o removed variables in dynamics
3133    !!! I forgot to create tag chkpt44d_pre !!!
3134    !!! But chkpt44d_pre = chkpt44c_post    !!!
3135    
3136    o real fresh water flux implemented with non-linear free-surface.
3137    
3138    chkpt44c_pre,post
3139    o few fix (mask in shap_s2, EmPmR in external_field_load,
3140      USE_NATURAL_BCS in solve_for_P);
3141    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3142    
3143    checkpoint44b_pre/_post
3144    o merge of relevant stuff from the ecco-branch:
3145      - genmake: removed $S64 overwrite for case SunOS
3146      - pkg/exf: update and corrections for field swapping and obcs
3147      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3148                  harmonized between ECCO and MITgcm
3149      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3150                      updated checkpointing_lev... lists for obcs
3151      - model/src: minor changes in forward_step, plot_field
3152                   added directive for divided adjoint in the_main_loop
3153      - pkg/mdsio: added mdsio_gl_slice
3154    
3155    o check parameters & config (chkpt44a_pre,post)
3156    o OBC and NonLin_FrSurf.
3157    
3158    checkpoint44
3159    o fix bug in mom_vi_del2uv
3160    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3161    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3162    o update AIM experiments (NCEP input files)
3163    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3164    o added some stuff for AD
3165    
3166    checkpoint43
3167    o added two new advection tests
3168    o added global 4x4 degree ocean test
3169    o added test of H&S94 with free surface on cube
3170    o some final mods for gradient check, adjoint,...
3171    
3172    checkpoint42
3173      Fixed AD-related problems:
3174    o Store directives up-to-date with re-arranged Adams-Bashforth
3175      (mainly thermodynamics.F)
3176    o New store directives for multi-dim. advection schemes
3177      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3178      * new common block and key passkey
3179      (mainly gad_advection.F)
3180    o Modified store directives for split of dynamics/thermodynamics
3181      for the case ALLOW_KPP
3182    o Cleaned argument list for timestep_tracer.F
3183    
3184    checkpoint41
3185    o re-formatted/added comments in prologues of key subroutines
3186      to work with protex
3187    
3188  checkpoint40  checkpoint40
3189  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
3190    o added FLT (floats) package from Arne along with demo. experiment
3191    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3192      implementation of forward-in-time forcing terms
3193    o more mods for non-linear free-surface including new variable
3194    o modified multi-dim method to work on cube
3195    o bug fix in KPP (from DM)
3196    
3197    checkpoint40pre9
3198    o added DST advection schemes
3199    o fix MPI bug on SGI's
3200    o modifications for non-linear free-surface
3201    o fixed conditionals for fixed flow/passive tracer only mode
3202    o added tension/strain form of stress tensor
3203    o changes to commenting of arguments for TAF/TAMC
3204    o added/updated many matlab scripts
3205    o added multi-dimensional advection method for tracers
3206      
3207    checkpoint40pre8
3208  o new package rw/  o new package rw/
3209    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
3210    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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