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revision 1.107 by cheisey, Mon Dec 2 13:28:30 2002 UTC revision 1.855 by heimbach, Fri Jul 27 22:22:37 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 exch2 adjoint
8      First set of changes:
9      - add exch2 hand-written adjoint templates
10      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
11        This will require cleanup in pkg/autodiff/*.F
12        (changed routines currently kept separate in verif. code/)
13      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
14        that used to hide exch2 or cubed-sphere specific code
15        (commented via 'cph-exch2')
16    
17    checkpoint59e
18    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
19      for B-grid vector (not yet tested) and C-grid vector (<- only used
20      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
21    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
22      (#ifdef ALLOW_SALT_PLUME)
23    o gather_2d/scatter_2d: removed halo regions
24    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
25      scheme and the corresponding test case (under front_relax dir). For now,
26      only available with Skew-flux form and not yet tested in realistic set-up.
27      adjoint: store directives updated, but gradient checks deteriorated,
28      so maybe GM/Redi adjoint is now broken.
29    o seaice adjoint
30      * add AREA, HEFF, HSNOW as control variable
31        (should not change lab_sea results)
32      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
33    o pkg/seaice:
34      * added computation of saltFlux in seaice_growth;
35        For time being, sea ice salinity is assumed constant
36        contribution of snow flooding to freshening of sea ice is neglected.
37        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
38        defaults to 0.0 in order to maintain backward compatibility.
39        Typical values for SEAICE_salinity are 4 to 10 g/kg.
40      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
41      * added SEAICE_availHeatFrac, which specifies fraction of surface level
42        heat content used to melt or grow ice
43      * commented out cap of HICE: it helps keep ice thinner
44      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
45      * applied OBCS T/S mask to HEFFM sea ice mask
46    
47    checkpoint59d
48    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
49     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
50     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
51    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
52     and change default value of parameter "GM_Small_Number";
53     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
54       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
55       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
56    o pkg/ecco: cost function when applying pkg/smooth to controls
57    o pkg/ctrl: add forcingPrecond run time parameter
58    o pkg/seaice:
59     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
60     - fix bug in metric terms of u-equation in LSR solver (implicit part),
61       changes verification/lab_sea
62     - rearrange implicit part of u-equation in LSR solver to make it easier to
63       read, understand, and debug. This causes changes at the truncation level.
64     - fix (serious) bug in the boundary conditions (sign error in the implicit
65       part) of the LSR solver. Changes all LSR results.
66     - fixed problem with HSNOW initialization to avoid thick snow when AREA
67       is initilized with small values - does not change lab_sea results.
68     - added HsnowFile initialization capability
69    o pkg/smooth: addition to model/src and pkg/ctrl so allow
70     initialization of pkg/smooth and application to control vector
71    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
72    o dependencies: pkg/profiles requires pkg/cal
73    o pkg/profiles:
74     - added option ALLOW_PROFILES_GENERICGRID
75         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
76         that interpolation information (grid points and coefficients) is provided
77         within the netcdf input files.
78         -> sample matlab scripts can be found in MITgcm_contrib/gael
79         that allow you to prepare netcdf input files.
80     - also modified: cleaner include statements, cleaner error print statements,
81       cleaner stops when error, and more tests of the netcdf input files consistency.
82    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
83    o pkg/seaice:
84     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
85       requires a new routine: seaice_diagnostics_fill.F
86     - make sure that seaice does not move if not forced (pressure replacement
87       method, Hibler and Ip, 1995), changes results
88     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
89     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
90       It is turned off by default (=-1.), because it changes the results.
91     - make it possible to read AREA from a file, too.
92    
93    checkpoint59c
94    o add S/R and diagnostics for oceanic mixed-layer depth
95    o move GMRedi call after all vertical mixing schemes (including KPP)
96    o pkg/thsice:
97     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
98      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
99    o pkg/obcs:
100     - bug fix for balance code
101    o pkg/seaice:
102      - allow values of SEAICE_elasticParm > 1
103      - add new parameter SEAICE_evpTauRelax as an alternative
104        to SEAICE_elasticParm
105      - make lsr boundary conditions free slip (by default), changes result
106      - add code for no slip boundary conditions for lsr
107      - set minimum of zeta to zero (and not 4e8) (changes results)
108      - add a cap on AREA after advecting AREA if seaice_growth is not called
109    o change calculation of Visbeck K:
110      - no longer depend on tapering scheme; instead, compute slope (limited
111        by GM_maxSlope). this is equivalent to what was comuted before with
112        clipping or linear tappering.
113      - fix vertical averaging (wrong by 1/2 level)
114      - leave the old version (but will not be maintained) within
115        #ifdef OLD_VISBECK_CALC / #endif
116      - update output of exp. ideal_2D_oce
117    o change error catch in calc_r_star to improve vectorization
118    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
119      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
120    o adjoint:
121      Re-organized adjoint checkpointing according to Matt Mazloff
122      (but with modifs/completions/cleanups)
123      Storing is now bundled into large arrays to optimized I/O
124      (and second step in cleanup of the_main_loop)
125    
126    checkpoint59b
127    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
128      - export/import (between ocean & coupler) fields needed for ocean DIC.
129    o pkg/seaice:
130      - get rid of three more exchanges seaice_calc_viscosities (required
131        different loop boundaries in seaice_lsr and seaice_ocean_stress)
132      - bug fix in seaice_ocean_stress (update of lab_sea required)
133      - reduce loop boundaries to necessary minimum also in seaice_evp
134      - go back to the old way of computing deltaC/Z as the adjoint likes that
135        better
136    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
137      passive tracer to an Age Tracer) + update output.txt
138    o pkg/exf:
139      - implement A-grid / C-grid selection for wind-stress input files.
140      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
141      for now, in exf_bulk_largeyeager04.F only :
142      - change implementation for case where windspeed + 2. components wind-stress
143        are read-in. AND use rhoConstFresh to convert evap.
144    o pkg/seaice:
145      - use correct EXCH_UV for wind-forcing (on A-grid).
146      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
147        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
148    o pkg/exf:
149      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
150      EXF_INTERPOLATION:
151      - merge global_with_exf/code version of exf_interp_read.F
152        to the main code ;
153      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
154        reading the file ; Important: This options needs to be defined to recover
155        previous code.
156        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
157      - no longer loose real*8 precision along the way when using exf_iprec=64.
158    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
159      - change discretisation of evp-solver in order to avoid another exchange
160        (changes lab_sea) and clean up a little
161      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
162        help the adjoint (this also changes the results slightly)
163      - add a few "_d 0" where they had been missing in seaice_evp.F
164      - cleaning up: remove unused seaice_calc_rhs.F
165    o pkg/exf: some cleaning-up:
166      - change various "constants" into runtime parameters
167      - cleaned-up Large&Yeager04 routine which should eventually
168        replace exf_bulkformulae.F (changed names of S/R and CPP)
169        and merged various ALLOW_ATM_WIND options
170     only used with thsice pkg (in thsice_get_exf.F):
171      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
172        which are used when useStabilityFct_overIce=TRUE (= the default)
173      - change default values of ice & snow emissivity and scale downward LW
174        by ice & snow emissivity.
175    o pkg/thsice:
176     fix few little problems, in thsice_calc_thickn.F:
177      - growth vertically (and not laterally) if iceFrac == iceMaskMax
178      - melt only laterally if hIce < hThinIce (as the comments say)
179      and in thsice_extend.F:
180      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
181      - start to form ice as soon as the minimum ice-volume is reachable.
182     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
183      and cpl_aim+ocn
184    o pkg/kpp
185     - move computation of surface related input fields to KPP into a new
186       subroutine kpp_forcing_surf.F
187     - remove wrong (within bi,bj loops) EXCH calls.
188     - little cleaning (add argument myThid in last position, cvs header ...)
189     - for now, fix conservation problem by exchanging KPPviscAz (may not
190       be the best fix)
191    o pkg/seaice
192     - check for inconsistent evp parameter/cpp-flag combination
193     - remove leftover errIO flat for obsolete name list error handling
194    o OpenAD
195     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
196    
197    checkpoint59a
198    o pkg/seaice: some parameter clarifications and a little bit of clean up
199    o pkg/thsice: rename run-time parameters:
200       himin       -> hIceMin
201       himin0      -> hThinIce
202       hihig       -> hThickIce
203       i0          -> i0swFrac
204       transCoef   -> bMeltCoef
205       frac_energy -> fracMelting
206      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
207       with default values (for now) that do not change the results.
208      remove old version of thsice vars advection in pkg/seaice.
209    o in FFIELDS.h:
210      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
211      - make pLoad & sIceLoad always available (but still only used if
212         ATMOSPHERIC_LOADING is #define).
213    o pkg/kpp: replaced _KPP_RL with _RL
214    o bug fixes for vertical diffusivity computations when both KPP and
215        3D diffusivity arrays are used.
216    o pkg/seaice: fix bug in evp solver, while doing that
217      - change (improve?) discretization of stress computations for both
218        cgrid-lsr and evp solver
219      - add a new routine to compute strain rates
220      - the above changes lab_sea results
221      - add no slip conditions for evp solver (off by default), lsr-version
222        may follow
223      - fix exchange for shear at Z-points (does not change lab_sea)
224      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
225        (to force the user to pick a time step since there is not "safe" way
226        of choosing it)
227      - add principal stress diagnostics
228      - rearrange fields for evp a little to avoid having to call a: too many
229        exchanges and b: exchanges for stress trensor components which we do
230        not have.
231      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
232        of evp, complete rewrite for lsr case (latter is does not yet work
233        in all cases)
234    o pkg/kpp: add code to have mixing in shelf ice caverns
235      - add myThid to all kpp routines (long overdue)
236    
237    checkpoint59
238    o pkg/exf:
239      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
240        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
241      - move exf header files from lower_case.h to UPPER_CASE.h ;
242        add missing cvs Header & Name
243      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
244      - add namelist param. selectStressGridPosition, exf_monFreq
245      - retire many _CLIM routines, and remove data.exf_clim
246        + params moved to data.exf
247        + climsst, climsss now handled by exf_set_gen, i.e.
248          climss?period=0 refers to constant field,
249          climss?period=-12 to monthly forcing
250      - split up namelists in data.exf
251    o pkg/seaice:
252      - remove seaice_exch and seaice_exch_uv
253      - remove superfluous exchange of theta
254      - add myThid to seaice_budget_ocean/ice
255      - add new interface for atmospheric wind forcing (C-grid only)
256        + new routine
257        + two new field (taux, tauy for stress over ice)
258        + removed one global field (DAIRN) for C-grid case only
259    o pkg/thsise
260      - 2nd set of modifs for thsice adjoint in conjunction with exf
261    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
262    
263    checkpoint58y_post
264    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
265      vertical diffusivity, similar to that in MOM4; turned on using
266      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
267      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
268    o Added capability for 3D specification of background vertical diffusion
269      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
270      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
271      "data" file that contains the 3D vertical diffusivity coefficients.
272    o ice dynamics (pkg/seaice) with thsice thermodynamics:
273      - add code within pkg thsice to advect & diffuse sea-ice fields
274      similar to (and will replace) what has been added in  seaice_advdiff.F,
275      but: - conserving Mass, Heat & Salt.
276           - better when using non-linear advection scheme (not yet fully tested)
277           - can also be used in atmospheric set-up (for now, only the diffusion).
278    
279    checkpoint58x_post
280    o IO option for global-file compact format:
281      - add options when generating topology (utils/exch2/matlab-topology-generator)
282      - add I/O capability (pkg/mdsio).
283      - adapt utils/matlab/rdmds.m to read this format.
284      for now long-line format not yet supported by pkg/mdsio (& exch2).
285    o shelfice: add a few diagnostics
286    
287    checkpoint58w_post
288    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
289      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
290      (and replace horiVertRatio in NH code).
291      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
292                         and tutorial_plume_on_slope (sensitive to truncation)
293    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
294      directly to drive seaice model (C-grid only)
295    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
296     - reintroduce computation of wind from stress,
297     - compute tau (in exf_bulkformulae.F) from windstress averaged to
298       mass points to avoid tau = 0
299     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
300    o rdmnc.m: make it work with "global" files created with gluemnc
301    o rdmnc.m : some improvements in dealing with singleton dimension
302      (tested on all testreport mnc output files).
303    o genmake2: disable pkg/profiles if netcdf test fails.
304    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
305    o move call to cal_readparms up to make calendar parameters/variable available
306      to all packages
307    
308    checkpoint58v_post
309    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
310      useDynP_inEos_Zc tested.
311    o pkg/exf: changes to properly interpolate/mask/scale initial fields
312    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
313      and portions thereof.  See read_cs.txt for description and examples.
314    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
315      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
316      following the great-circle arc between those 2 points.
317    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
318      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
319    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
320     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
321     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
322     - still needs work (not working with some options ; efficiency to improve)
323       and serious testing.
324     - use this scheme for temperature & salinity in 2 advection test exp.:
325       advect_xy & advect_xz, respectively.
326    
327    checkpoint58u_post
328    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
329    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
330    o testreport: add option "-skipdir" to skip some test.
331    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
332      momentum calculation.
333    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
334    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
335      remove checkpoint.F and the_correction_step.F (no longer used);
336      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
337    o add option (linFSConserveTr) to correct for tracer source/sink due to
338      Linear Free surface
339    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
340    o pkg/thsice: fix reading mnc-pickups
341    
342    checkpoint58t_post
343    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
344    o pkg/mdsio:
345     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
346       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
347       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
348     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
349     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
350       either MDS_READ_FIELD or MDS_WRITE_FIELD )
351     - new S/R (to replace MDSWRITEMETA), which allows to write more
352       informations (variable names, time ...) to meta files.
353     - modify rdmds.m to give back the meta file content.
354    o pkg/diagnostics: change vertical interpolation to be safer, and more
355       flexible (define p-levels to interpolate to in data.diagnostics);
356      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
357       diagnostic pointer.
358    o pkg/seaice: more cleaning up of seaice_growth, added many comments
359    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
360    o fix multi-category seaice:
361     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
362       SEAICE_MULTICATEGORY
363     - fix short wave heat flux
364    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
365       and allow to use EVP solver. Change forward lab_sea: test both EVP
366       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
367    o Initial check-in of lab_sea adjoint
368      (very similar to natl_box_adjoint/code_seaice)
369      * used C-grid and EVP solver
370      * used KPP, GM/Redi
371      * uses inAdExact=.TRUE.
372      * gradient checks fail for both ADM and TLM
373        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
374        f.d. gradients actually seem more problematic than ADM, TLM gradients;
375        issue is related to forward mismatch between g77 an ifort
376    o pkg/seaice: overhaul of thermodynamics
377     - growth.F and groatb.F are replaced by new routine seaice_growth.F
378     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
379     - move a few global fields out of SEAICE.h into seaice_growth.F and
380       make them 2D (FICE/QNETO/ ...)
381     - remove FO (it is the same as QNETO)
382     - introduce a few local fields to avoid modifying external fields such
383       as atemp, etc.
384    
385    checkpoint58s_post
386    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
387      changed exf_set_gen.F so that
388        genperiod=0 means input file is one time-constant field and
389        genperiod=-12 means input file contains 12 monthly means
390    o CG2D: use pre-computed solver main-diagonal (stored in common block);
391      this affects truncation error ; generate new output file for exp. which
392      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
393        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
394        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
395        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
396        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
397        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
398    o start implementation of deep-atmosphere and anelastic formulation
399    o verification: remove 2nd copy of input files and use script "prepare_run"
400      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
401    o mom_common/vecinv/fluxform: fix a few initialisation isssues
402    o profiles: fix for multithreaded case
403    
404    o diagnostics: rename few diags:
405      s/'PRESSURE'/'RCENTER '/g
406      s/'TICE    '/'oceFreez'/g
407      s/'TAUX    '/'oceTAUX '/g
408      s/'TAUY    '/'oceTAUY '/g
409      s/'SWFLUX  '/'oceQsw  '/g
410      s/DIFx/DFxE/g
411      s/DIFy/DFyE/g
412      and add few ocean-forcing diagnostics:
413      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
414    o modifications to pkg/seaice/growth.F and budget.F, which change results of
415      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
416      as actual snow thickness.  It now refers everywhere to effective snow
417      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
418    
419    checkpoint58r_post
420    o modifications to pkg/seaice/growth.F, which change results of
421      lab_sea experiment: fixes pertain to melting snow over open water, to
422      masking EVAP under sea ice, and to using the correct AREA variable for
423      computations of EVAP, PRECIP, HSNOW, and GHEFF
424    o add ability to read bathy, salt, and theta using MNC (off by def)
425    o add flooding algorithm and advection of HSNOW for pkg/seaice;
426      both are turned off by default and do no change any results
427    o seaice advection with pkg/thsice: a step toward the use of non-linear
428      advection scheme, but #ifdef or commented out for now (requires more EXCH).
429    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
430      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
431      in natl_box (affects results @ truncation level: update output.txt)
432    o multi-threading and IO:
433      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
434      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
435        (needed to work with SingleCpuIO): tested in all verif. exp.
436    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
437      affects the results (but none of the verification test uses this scheme).
438    o Adding some pkg/diagnostics capability to pkg/seaice
439      (will certainly be subject to changes)
440    o ctrl: adding new control variables:
441      lwflux, lwdown, evap, snowprecip, apressure, runoff
442    
443    checkpoint58q_post
444    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
445      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
446      high_res_cube configuration by 4% on Columbia.
447    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
448      add (in global_with_exf/code) a version of EXF_INTERP_READ without
449      dynamical allocation (seems to work in multi-threaded).
450    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
451      single CPU io) so that TAF does not have to see EESUPPORT.h
452    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
453    
454    checkpoint58p_post
455    o obcs: stop if obcs is used with useCDscheme = .true.
456    o shelfice:
457     - fix a sign error so that no slip at shelfice interface works
458     - remove stop for combination non-hydrostatic code and shelfice. That does
459       not mean, that the results are correct, but at least they are numerically
460       stable
461    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
462    o added adjoint exch routined for all exch*3d* routines
463      and updated flow directives
464    
465    checkpoint58o_post
466    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
467      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
468    o change controling S/R for writing pickup file (new S/R do_write_pickup)
469      and clean-up reading/writing of pickup files.
470    o fix local version of read/write pickup (NH part) in rotating_tank/code
471    o simplify EXCH interface:
472     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
473     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
474    o added the regrid package
475    o shelfice:
476     - add a simple boundary layer scheme to reduce noise
477     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
478    
479    checkpoint58n_post
480    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
481       local variable (not in common block).
482    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
483      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
484      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
485        to work with SingleCpuIO.
486    o add "_d 0" to real constant of pkg/cfc subroutines ;
487       update exp. cfc_exemple & tutorial_cfc_offline output files.
488    o multi-threading and IO:
489      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
490        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
491      - barrier before and after reading.
492      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
493      - avoid using MDS_WRITELOCAL for LAND pkg output.
494      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
495        common-block variables ; Allows multi-threading with master-thread IO.
496    o change default MAX_NO_THREADS from 32 to 4 ;
497      and stop cleanly when MAX_NO_THREADS is too small.
498    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
499    
500    checkpoint58m_post
501    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
502       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
503    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
504       keep global_ocean.90x40x15 (for AD testing) with former secondary test
505       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
506    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
507        add MITgcm_tutorials (= code + all the tutorials)
508    o ecco, option to compute cost for total ssh (mean+anom)
509    o consistent with addition of ptracer and ssh in pkg/profiles
510    o profiles: adding ptracer and ssh
511    o testreport: change multi-test output-file name
512      (from output.txt.{name} to output.{name}.txt)
513    o profiles: now ok for mutli-tiles case
514    o seaice: add 4 parameters for different advection schemes for area,
515      (effective) seaice thickness, enthalphy, and snow height. Their default
516      is the standard parameter SEAICEadvScheme
517    o calc_gw:
518     - add cosFacU in zonal viscous flux (harmonic.visc.).
519     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
520       of tutorial_plume_on_slope.
521    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
522    o calc_gw: true flux-form, account for horizontal grid spacing.
523      update rotating_tank results, but not plume_on_slope (affected at
524      truncation level, 11 digits).
525    
526    checkpoint58l_post
527    o calc_gw:
528     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
529     - remove side-drag for now (need to fix it); update plume_on_slope results.
530     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
531    o commit code to make SST/SSS weights spatially variable
532      (based on either variable in-situ or variable initial T/S weights)
533    o pkg/ecco:
534      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
535        now based on horizontally varying weights wthetaLev, wsaltLev
536      * cost_averagesflags now returns year indices in addition to day, month
537      * sflux balance is performed on annual basis
538        (sflxumm, sfluxmm2, bal_sfluxmm)
539      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
540        including separate counting and multipliers
541    o pkg/rbcs
542      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
543    
544    checkpoint58k_post
545    o testreport:
546     - always build in dir. "build" (if not there, mkdir build instead of building
547       & running in input)
548     - run in dir run (if it exists), in build otherwise.
549     - call prepare_run (if input/prepare_run exists)
550     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
551    o pkg/exf modifications to interpolation and rotation routines for more
552       reasonable treatment of North Pole singularity: for tracers North Pole
553       value is set to northernmost zonal-mean value, for zonal velocity it is
554       set to zero, and for meridional velocity it is set to northernmost value.
555    o pkg/exf/exf_check_range.F
556     - add tile index to diagnostics and move stop statement to the very
557       end of the routine.
558    o pkg/diagnostics: (diagnostics_main_init.F)
559      define title of isomorphic variables according to the current config.
560    o pkg/thsice with pkg/seaice dynamics:
561    - fix domain of computation (interior only, required for exf) and do exchanges
562    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
563    o towards a standard way of dealing with multi-threading in MONITOR
564      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
565    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
566       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
567    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
568    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
569    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
570       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
571    o tracer advection:
572     - clean-up and simplify calc_common_factors.F
573     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
574       advection subroutine (but still not used within DST advection S/R)
575    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
576    
577    checkpoint58j_post
578    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
579      from file (collects calls previously in FORWARD_STEP)
580    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
581    o adjoint store dir. adjusted accordingly
582    o genmake2
583      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
584    
585    checkpoint58i_post
586    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
587      on wind stress (SEAICEstressFactor defaults to 1.)
588    o Total number of Timers is finite (<=40): comment out 2 non-essential one
589      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
590    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
591      on CS-grid: no longer loosing mass.
592    o exf & curvilinear-grid: no longer modify longitude xC & xG.
593    o pkg/ggl90: fix sloppy output and fix a bug
594    o pkg/seaice: added SEAICEuseEVPpickup parameter
595      - Set to false in order to start EVP solver with
596        non-EVP pickup files when using SEAICEuseEVP
597      - fix sign error in diffusion in seaice_calc_rhs
598    
599    checkpoint58h_post
600    * Modifications for bottom topography control
601      o replace hFacC by _hFacC at various places
602      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
603      o add non-self-adjoint cg2d_nsa
604      o update autodiff support routines
605      o re-initialise hfac after ctrl_depth_ini
606      o works for 5x5 box, doesnt work for global_ocean.90x40x15
607    * Adding verification for 5x5 box (4-layer) bottom topography control
608    
609    checkpoint58g_post
610    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
611       used for mean seasonal cycle, mean diurnal cycle); add an example
612       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
613    o pkg/ggl90:
614      - add parameter (minimum surface kinetic energy)
615      - fix bug (avoiding division by zero)
616    o couple pkg/thsice to pkg/seaice:
617      - modify advection in seaice to accomodate new scalar fields to be advected
618      - only muliDimAdection scheme work with seaice/thsice
619      - mapping of thsice-variables to seaice-variables, back and forth
620      - does not break the verification experiments, but does not give the
621        desired results either
622    o pkg/seaice
623      - make (default) second order advection a bit less confusing?
624    
625    checkpoint58f_post
626    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
627      to pkg/seaice):
628      - new routines thsice_map_exf and thsice_get_exf provide the interface
629      - add an additional formal parameter to thsice_solve4temp
630    o pkg/exf:
631      - add new fields wspeed, snowprecip (to be able to couple to thsice)
632      - correct Stefan-Boltzmann constant
633      - new parameter for longwave surface emittance
634      - separate some stuff from exf_bulkformulae into new routines  
635        exf_radiation, exf_wind
636      - add new parameters and constants: longwave emissivity for ocean, ice
637        and snow, evaporation parameters over ice
638      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
639        either wind from stress or stress from wind
640    o pkg/thSIce:
641    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
642    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
643       and THSICE_CALC_THICKN
644    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
645    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
646      to make debugging easier.
647    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
648    o pkg/bulk_force:
649      - clean-up comments and parameters ;
650      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
651    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
652      generate new output for test-experiment: aim.5l_cs.thSI
653    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
654      testreport accordingly
655    
656    checkpoint58e_post
657    o SEAICE_CGRID adjoint done
658    o R_STAR adjoint implemented.
659      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
660      * need to sort out init. of h0facc, etc.
661    o Make pkg/profile fully independent of ecco,cost, etc. stuff
662      to be able to use it in pure forward.
663    
664    checkpoint58d_post
665    o upgrade simple test-experiment to tutorial example:
666     step.1: duplicate the experiment and (step.2) will remove the old copy.
667      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
668      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
669      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
670      tutorial_global_oce_biogeo    <- copy of dic_example
671      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
672      tutorial_plume_on_slope       <- copy of plume_on_slope
673      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
674      tutorial_global_oce_optim     <- empty for now (David ?)
675      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
676     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
677    o correct a sign problem in cost_scat.F
678    o obcs and ptracers: fix boundary conditions for advections schemes
679      with larger stencil
680    o thsice adjoint: start
681    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
682      completeness
683    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
684      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
685    o ptracers adjoint:
686      * avoid extensive recomputatations
687      * fix missing re-init. of gptr (missed by TAF)
688    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
689      me to turn off the excessive output to STDOUT that this package produces
690    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
691      and add those terms in Vector-Invariant formulation.
692    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
693      if the control period (xx_hfluxperiod etc) is 0
694    o in profiles pkg, clean routines and fix details
695    o in ecco pkg, reading ssh data:
696      fix problem in case the model does not start at iter0=0
697    o fix mnc-pickup/restart for ptracers
698    o new package prifiles:
699      code to compute profile-based cost by Gael Forget
700      (modifs in ecco, ctrl, autodiff)
701    o Benign bug fix in initialization (spotted by M. Mazloff) of
702      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
703    
704    checkpoint58c_post
705    o adjoint: finish NLFS adjoint and provide reference output in
706      verification/global_ocean.90x40x15/results_ad_nlfs
707    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
708      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
709      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
710      with SEAICE_CGRID defined.
711    o move calendarDumps from "data" to "data.cal" and clean-up the code
712      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
713    o add useEXF & useCAL flags (for now, set in hard-coded way)
714    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
715      (were missing in NH mode, and wrong in quasihydrostatic mode).
716      waiting for Chris updated version of calc_gw to add those CALLs.
717    o fix bug in quasihydrostatic S/R ;
718      add a test for this option: global_ocean.90x40x15.qshyd
719    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
720      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
721    o add on/off flag useOffLine for package OFFLINE
722    o seaice:
723      - modify advection so that it works also on the C-grid
724      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
725        problem in multi-tile runs with C-grid
726      - add flags for clipping ice velocities and/or masking solver forcing
727      - fix drag (ocean on ice) formulation and a bug that caused noise in the
728        C-grid solver
729      - added a few comments to seaice_diffusion.F
730      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
731        are now exclusive)
732      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
733        required re-ordering the code a little:
734       + make DAIRN global variable (defined in SEAICE)
735       + move computation of the viscosities eta and zeta into a new separate
736         routine (because I need to recompute them in seaice_ocean_stress.F)
737    
738    checkpoint58b_post
739    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
740      update output.txt of exp. aim.5l_cs.thSI
741    o various mnc cleanups and improvements:
742      + shrink lookup tables by factor of ~4
743      + better error reporting when running out of lookup space
744      + able to handle longer path/file names (up to 500 chars)
745    o adjoint:
746      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
747      - TBD: "hidden" mom_vecinv recomp. in dynamics
748    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
749     (allow to differentiate between forcing components using new integer flags:
750      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
751     and add new flag to put Dissipation tendency out of Adams-Bashforth.
752    o ecco
753      - enable trend removal from SSH anomaly obs.
754    o adjoint
755      - a fix for PmEpR when #undef EXACT_CONSERV
756      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
757      - try to fix "hidden" recomp. in forward_step for NLFS
758        (NLFS seems broken sometimes after I checked it in)
759    o seaice:
760     - add c-grid version of the dynamic solver:
761       + three new routines that are the c-grid substitute lsr, dynsolver
762         and ostres
763       + put a few fields that were local to dynsolver into global common
764         blocks, so that I can move the computation of stresses etc into
765         seaice_lsr (saves coding but may break the adjoint).
766     - replace more hardwired parameters by runtime parameters
767     - add ice masks that mask the rhs of the implicit solvers where there
768       is no ice (commented out in seaice_dynsolver, because i am not sure
769       if this works properly), eventually this should replace the clipping
770       of ice velocities in seaice_dynsolver to +/-40cm/s.
771    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
772      include it only where its needed
773    o move balancing of fluxes before the call of external_forcing_surf
774    o seaice:
775      - correct units of turning angles (now they are really in degrees)
776      - move computation of GWATX/Y out of main routine into dynsolver
777      - initialize GWATX/Y in seaice_init
778    o Apply mask on Fresh-Water flux (needed for SSH forcing).
779      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
780    o seaice: add runtime flags for turning angles (default to zero)
781    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
782      and trend from exf forcing and ctrl control adjustments
783    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
784      (since checkpoint57x_post)
785    o change the default rotation period to 86164.s = the Earth rotation
786    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
787      and based on a reference stratification. Tested within hs94.cs-32x32x5.
788    o seaice advection: add code for choosing between the default (2nd order
789      central differences) and multiDim advection schemes provided by
790      pkg/generic_advdiff
791    o seaice:
792      - removed all references to SEAICE_GRID.h fields from
793        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
794        (cubed-sphere configuration will change a little)
795      - grid computations in seaice_init are obsolete now.
796      - cleaned up code a little so that is easier to read (hopefully).
797      - added new (better?) discretizations of default advection and diffusion
798        (turn on with SEAICEuseFluxForm)
799      - replace 1 in 3d global fields by kSurface in growth.F
800      
801    checkpoint58a_post
802    o seaice:
803      - bug fix in advect.F
804    o shelfice:
805      - separate shelfice load anomaly from pload (breaks with time
806        dependent forcing), => introduce constant field shelficeLoadAnomaly.
807        Its default is 0., but it may be computed more cleverly from (unknown)
808        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
809        done offline. A good approximation of the pressure load anomaly is
810        necessary to avoid large initial adjustment processes underneath
811        deep-reaching shelfice.
812      - small fix in ISOMIP shelfice_thermodynamics
813      - add more sophisticated thermodynamics of Hellmer (1989), this is
814        now the default
815      - give a few constants more intuitive names
816    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
817      if bulk formulae are used in long integration (especially EmPmR). Turn
818      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
819      if balancePrintMean, the imbalance that is substracted is printed to
820      STDOUT.
821    o fix bug (typo) in obcs_apply_eta.F
822    o add a new package shelfice which enables us to model the circulation
823      underneath shelf-ice with draughts of hundreds of meters.
824     - works
825     - to do: + include improved thermodynamics
826              + check whether kSurfC (from model/inc/SURFACE.h) can be used
827                instead of new field kTopC
828              + can we use topoFile, Ro_surf and existing code in ini_depth.F
829                instead of new field R_shelfIce and new code in ini_depth.F
830                and ini_mask_etc.F?
831              + adjust vertical mixing schemes?
832    o seaice pkg:
833     - add a cpp-flag to include a simple formula for a salinity dependent
834       freezing point of sea water at the surface
835     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
836       meridional stresses are now different (and hopefully correct)
837    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
838       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
839       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
840    o pkg/diagnostics: add options and parameters for regional-statistics
841       diagnostics ; define regions by reading a region-mask from a file
842       (might add other options later)
843    o pkg/bulk_force:
844     - add option and parameters to use AIM surface-flux formulae.
845     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
846       others forcing fields (defined in PARM05, parameter file "data") are loaded
847       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
848     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
849     - use the right EXCH call for uwind,vwind (to work on CS-grid).
850     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
851       and parameters (note: calcWindStress replaces .NOT.readwindstress).
852     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
853    
854    checkpoint58
855    o add "--embed-source" option to genmake2 which, when the supporting
856      tools can be compiled (as determined by genmake2) will turn on the
857      embed_files package which then embeds the entire MITgcm source code
858      (*.[fFhc] + Makefile) used for the build within the executable
859      - requested by CNH but off by default
860      - adds a paltry <9MB to the mitgcmuv executable in most cases
861      - only writes the output when useEMBEDSRC in eedata is true
862    o clean up 3-dim. relaxation codes:
863      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
864      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
865      * Thanks to Tom Haine for testing!
866    
867    checkpoint57z_post
868    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
869      affects output (@ truncation level) of exp. plume_on_slope ; updated.
870    o fix the pickup behavior for obcs in combination with ptracers
871    o fix a bug in ptracers_external_fields_load
872    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
873      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
874    o transfered surface NH pressure to eta field (if exactConserv).
875    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
876         and update lab_sea output.txt file.
877    o completing 3-dim. relaxation code: additional term
878         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
879      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
880      * At compile time, in "EXF_OPTIONS.h" set
881          #define  ALLOW_CLIMTEMP_RELAXATION
882          #define  ALLOW_CLIMSALT_RELAXATION
883      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
884          tauThetaClimRelax3Dim = 15552000.0,
885          tauSaltClimRelax3Dim  = 15552000.0,
886      * 3 cases:
887          1) Use a constant-in-time 3-dim. field
888          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
889          3) Real-time relax. to time-evolving prescribed field
890    o Adding Laplacian-type smoothness constraint on
891      initial and boundary (forcing) controls (ic, bc)
892      * enable at compile-time via
893        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
894      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
895      * Absolute scale somewhat unclear so far
896      * no area weighting was included since no other cost term does so far
897    
898    checkpoint57y_post
899    First step for a NLFS adjoint
900    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
901    o new init. routines for calc_r_star, calc_surf_dr
902    o still need to deal with ini_masks_etc
903    o testreport seemed happy
904    checkpoint57y_pre
905    
906    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
907    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
908    o add new offset feature to offline pkg (plus minor cleanup)
909    o cfc fixes for final year of integration
910    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
911      be in GCHEM_OPTIONS).
912    
913    checkpoint57x_post
914    o fix testreport Pb in multiple test experiment.
915    o cleanup our namelist syntax in verification:
916      - make it more F95 standards compliant (some work still needed)
917      - allows the vast majority of our tests to work with gfortran
918    o Non-Hydrostatic:
919     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
920     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
921    o Allow to apply AB on T,S rather than on AB(gT,gS):
922     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
923     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
924       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
925     - need a "clever" read_pickup to restart from the other AB formulation
926    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
927    o remove some unused variables (reduces number of compiler warnings)
928    o adjoint
929      * Disable useVariableViscosity for adjoint for time being
930        (there are a number of extensive recomputations)
931      * Initialize certain variables needed for adjoint
932    
933    checkpoint57w_post
934    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
935                 fix the singleCpuIO RS version of MDSWRITEFIELD
936       and add a WARNING if using globalFiles=T with multi-processors.
937    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
938      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
939    o tracer advection scheme:
940      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
941       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
942       was not very convenient).
943      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
944       (further tests needed for the implicit DST & Flux-Limiter schemes).
945    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
946      and sRef for convenience, handy, when you want to initialize
947      ptracers in a large domain with a constant non-zero value. Also,
948      untangle ptracers_init.F a little.
949    
950    checkpoint57v_post
951    o change dome exp. to use variable viscosity in side-drag terms.
952    o remove all the files from the cfc_offline test since they are now
953      incorporated into tutorial_cfc_offline which has been producing
954      identical results for a few days of testing
955    o add new parameter: sideDragFactor to enable half-slip-side BC
956      and change side-drag S/R to use viscosity from mom_calc_visc
957      (can switch back by setting sideDragFactor=0.); affects results at
958      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
959       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
960    o vorticity & strain are now computed without masking, to account for
961      no-slip-side BC in variable viscosity calculation ; mask is applied
962      anyway later on, before computing advection/coriolis terms.
963    o modify exp4 to test new obcs support for reading from external files
964      and for passive tracers
965    o fix behavior of ptracers_monitor when monitor output is written to a
966      netcdf-file; still not independent of monitor.F (writes in the same
967      file).
968    o change default value of tRef (put a uniform, meaningful value for ocean
969      & atmos) and initialize sRef (was missing, as Martin mentioned).
970    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
971      to be proportional to enstrophy dissipation length.  Thus,
972       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
973      This is now consistent with Smagorinsky and with the manual.
974    
975    checkpoint57u_post
976    o OBCS and PTRACERS: add open boundary support for passive tracers
977      - either use homogenous (pseudo) v.Neumann conditions or prescribe
978        OB-values from file; this is not different from the way theta and salinity
979        are treated
980      - however, Orlanski-radiation conditions are not supported, and the model
981        will stop if you use pTracers and Orlanski at the same time.
982      - beefed up the rountine obcs_external_fields_load: now only those open
983        boundary values are overwritten with values from files for which there
984        are really files, otherwise the OB-fields remain untouched. This makes
985        it possible to use different OBs at different ends of the domain (as
986        with EXF)
987    o reduce number of exch calls in shap_filt (s2).
988    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
989      truncation level) 4/5 MLAdjust test results (11&12 digits match).
990    
991    checkpoint57t_post
992    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
993    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
994      same truncation, independent of the face number: affects affects several
995      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
996    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
997      note that biharmonic viscosity + no-slip was not tested in any experiment.
998    o fix bug in non-linear free-surf side-drag ; generate new output for
999      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1000    o make mnc honor the writeBinaryPrec flag for most kinds of output
1001    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1002    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1003      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1004    o add brackets in multi-terms sum to get same truncation, independent of
1005      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1006      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1007    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1008      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1009      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1010      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1011      Suggested values of viscosity parameters found in mom_calc_visc.
1012      Many new viscosity diagnostics available.
1013    
1014    checkpoint57s_post
1015    o Add clearing-house for viscosity calculations, mom_calc_visc and
1016      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1017      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1018      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1019      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1020      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1021      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1022      ViscAhStrain and viscAhTension are now retired.
1023    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1024    o In response to JMC's bug report, genmake2 now ignores any soft-links
1025      that it finds in the *current* directory when searching for files.
1026      Soft-links found in any other source directories will still work as
1027      they did before.
1028    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1029      a C routine to unlimit the stack size
1030    o mnc-ify pkg/aim snapshot vars
1031    o mnc-ify pkg/land as requested by Daniel
1032    o various changes to mnc including:
1033      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1034      - output can now be grouped so that all files within a group
1035          change the ITER portion of their names in lock-step together
1036      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1037          and works with both EXCH1 and EXCH2 (but needs more testing)
1038      - writing works for all verification test cases w/ g77 on Linux
1039    
1040    checkpoint57r_post
1041    o make MNC variable initialization happen earlier
1042    o add diagnostics for (almost) each term of the momentum Eq.
1043    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1044    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1045    o remove MINIMAL_TAVE_OUTPUT option ;
1046      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1047    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1048      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1049    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1050    o add time-dependent SST, SSS control
1051    o cost terms in ecco/ modularized (new cost_generic.F)
1052    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1053    o new infrastructure for seaice model vs. obs misfits in seaice/
1054      * driver from the_main_loop.F is seaice_cost_driver.F
1055      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1056      * gradient check in Exp. 6a of natl_box_adjoint/
1057    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1058      (see README file)
1059    
1060    checkpoint57q_post
1061    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1062    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1063      - bug was reported by Jean-Michel and Ian Fenty
1064    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1065      update exp. cpl_aim+ocn output.
1066    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1067      Needed for high-res. runs with large global files
1068      to be able to limit tapelev size
1069    o Changed some tests for adjoint:
1070      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1071      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1072      * global_ocean.90x40x15/ back to default 3-level checkpointing
1073    o Modifications to enable scripted COMMON to MODULE conversion
1074      * verification/OpenAD/code/ has necessary scripts and description;
1075      * converts, compiles and runs successfully;
1076    
1077    checkpoint57p_post
1078    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1079    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1080      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1081    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1082    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1083      (was already the case for dissipation with mom_vecinv,
1084       and also the case for grad.PhiHyd when staggered-timeStep)
1085      This will allow to put dissipation out-off the AB time-stepping.
1086     Unfortunately, affects truncation error. Update output of exp. that "fails"
1087      (cg2d matching number) and leave the others for later: front_relax(10),
1088      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1089      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1090    
1091    checkpoint57o_post
1092    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1093      (2) its ready to be documented during the 20050801 DocFest
1094    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1095      for ideal_2D_oce and lab_sea on linux_ia32_g77
1096    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1097      in global1x1_tot/code_seaice_adj to access indices 32, 33
1098      (worth another tag)
1099    
1100    checkpoint57n_post
1101    o adding precip control xx_precip 32
1102    o adding swflux control xx_swflux 33
1103    o Replacing 10 forcing penalty cost routines by 1 generic.
1104    o Implementing partitioning in time-mean and variable adjustment
1105      for atmos. state.
1106    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1107    o in natl_box_adjoint:
1108      * updated exp 1 to 10
1109        (but does not have time-mean vs. variable split results yet)
1110    o updated global1x1/*_seaice_adj/
1111      to incorporate latest changes
1112    o enable useSingleCpuIO for mdsio vector routines
1113      (applies in particular to tapelev I/O)
1114    o removed inefficient K-loop in all active_file*control*.F
1115    
1116    checkpoint57m_post
1117    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1118      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1119    o pkg/exch2: filling of face-corner halo regions is optional
1120      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1121    
1122    checkpoint57l_post
1123     tag before updating tutorials (pre-release-2)
1124    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1125       for output and interpolation of input fields onto model grid)
1126    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1127       Affects results of exp. rotating_tank ; update output.txt.
1128    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1129          and taking the square quantity and/or using a fraction-weight field.
1130    o fix aim_diagnostics_init.F mate numbers.
1131    o add mnc output capability to diagnostics/diagstat and update
1132      our cvsignore files for the ACSII output generated
1133    
1134    checkpoint57k_post
1135    o lab_sea now uses diagnostics package and provides a suite of
1136      new EXF diagnostics output.
1137    
1138    checkpoint57j_post
1139    o exf
1140      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1141        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1142        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1143      * extended diagnostics output
1144        - now includes all EXF variables
1145        - hs, hl moved to common block
1146        - separate S/R for diagnostics, called after ctrl vector is added
1147        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1148        - EXFqnet contains true Qnet (i.e. includes qsw)
1149      * updated verif. lab_sea, global_with_exf
1150      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1151        to ensure that diagnostics sees a true EXFqnet
1152    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1153    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1154      several times with different frequencies.
1155    o mnc-ify the thsice package as requested by Daniel Enderton
1156      - the monitor--MNC output needs work
1157      - many attributes need to be added (most are currently blank)
1158    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1159      - many attributes need to be added (most are currently blank)
1160    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1161    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1162    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1163      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1164         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1165    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1166     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1167    
1168    checkpoint57i_post
1169    o Diagnostics package was changed: diagnostic allocation is now deactivated
1170      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1171    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1172      add 1rst Order upwind vertical Shear.
1173    o add a quick fix for A/B checkpointing in OFFLINE mode
1174    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1175      end-run around the C/Fortran linking horror in eesup/src/timers.F
1176    o added pkg/runclock: allows user to terminate run based on wall clock
1177    o added non-hydrostatic scaling parameter: nh_am2
1178    o pkg/my82: futile attempt to make results compiler-independent by adding
1179      some "_d 0", etc. no effect.
1180    o for mnc output, fill the 'T' coordinate var with myTime and create a
1181      separate 'iter' variable for iteration count
1182    o pkg/diagnostics:
1183      add new capability: output of Global/Regional & per-level statistics ;
1184      tested against monitor output (including land & thSIce) on various exp.
1185    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1186    
1187    checkpoint57h_done
1188      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1189      data.diagnostics, data.gchem, data.ptracers) is done.
1190    
1191    o pkg/diagnostics: prepare for Global/Regional statistics.
1192      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1193    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1194      and rename it: DIFFERENT_MULTIPLE
1195    
1196    checkpoint57h_post
1197    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1198    o pkg/diagnostics: change output frequency, now in seconds (instead
1199      of Nb of iterations). This requires to change data.diagnostics.
1200    checkpoint57h_pre
1201    
1202    o in mnc, let the user create the output dir if both mnc_outdir_date
1203      and mnc_outdir_num are false
1204    o add fflags() to pkg/diagnostics which allows one to specify, on a
1205      per-file basis, the file precision [default behavior is unchanged]
1206    o added diagnostics to pkg/kpp, including computation of mixed layer
1207      depth based on a temperature/density criterion
1208    o updated verification/natl_box to test the new pkg/kpp diagnostics
1209    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1210    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1211    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1212      not mnc -- this mistake was found by JMC and is now corrected
1213    
1214    checkpoint57g_post
1215    o add Adams-Bashforth 3rd Order time stepping:
1216      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1217      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1218    checkpoint57g_pre
1219    
1220    o make lambda[Theta,Salt]ClimRelax spatially varying
1221      (default remains spatially uniform constant based on tau)
1222    o added new control variables
1223      * init. uVel, vVel, etanN
1224      * lambda[Theta,Salt]ClimRelax
1225    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1226      (suggested by G. Forget)
1227    
1228    checkpoint57f_post
1229    o add parameter "baseTime" = model base time = time at iteration zero
1230      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1231      account for baseTime shift
1232    o move Coriolis arrays from PARAMS.h to GRID.h
1233    checkpoint57f_pre
1234    
1235    o mnc-ifying the seaice package
1236    o introduced an alternative length scale calculation for use in the limiting
1237      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1238    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1239    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1240      as well as grad(vort3).  Made it compatible with both approximate form
1241      for the cubed sphere and full form of these gradients.  Added flag
1242      useFullLeith to select between approximate and full form.  
1243    o add "d0" in getcon.F to reduce differences between compilers/platforms
1244      update output.txt of exp. fizhi-gridalt-hs
1245    o change port_rand funtion to allow to set the seed.
1246    o fix obscure MNC bug involving conversion between reals and integers
1247      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1248        new version is now more standards-compliant
1249    o adjoint-related modifications
1250      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1251      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1252      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1253    
1254    checkpoint57e_post
1255    o Adding eddy stress controls a la Ferreira et al.
1256    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1257    
1258    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1259      update output.txt of exp. fizhi-gridalt-hs
1260    o add more "Z" dimensions and associated coordinate vars to MNC
1261    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1262    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1263      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1264      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1265      months and years.  Requires pkg/cal.
1266    o diagnostics: add pickup functionality
1267      - off by default for backwards compatibility
1268      - current version only uses MDSIO -- MNC will be added
1269    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1270    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1271    
1272    checkpoint57d_post
1273    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1274    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1275      output from the diagnostics package
1276    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1277    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1278      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1279    o add coordinate variables to the MNC output from the diagnostics package
1280    o change MNC-flags default value: true when useMNC=TRUE
1281    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1282      the ability (off by default) to read the grid information using MNC
1283    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1284    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1285    o do snap-shot diagnostics at the middle of the time-interval (instead of
1286      at the end).
1287    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1288      new test for AIM with thSIce + slab-ocean
1289    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1290    o move state variable diagnostics to the beginning of the time step ;
1291      (note: still needs some work specially for snap-shot diagnostics)
1292      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1293    
1294    checkpoint57c_post
1295    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1296    o generate new output.txt files on faulks with g77 & the new -ieee option
1297    checkpoint57c_pre
1298    
1299    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1300      update output.txt of exp. global_ocean.90x40x15
1301    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1302      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1303    o add saltFlux(+File) forcing capability with periodicExternalForcing
1304    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1305    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1306    o improvements for the MNC output from DIAGNOSTICS:
1307      - correct handling of the unlimitied dimension
1308      - all dims now have associated coordinate variables
1309      - variables located at U, V, and Corner ("Z") points are now written
1310        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1311        *all* data points are output
1312    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1313    o added pkg/seaice/seaice_monitor.F
1314    o mdsio_readfield.F can now read files visible only to master MPI process.
1315    o pkg/seaice: some test code for ice-modified ocean stress
1316    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1317      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1318      spurious negative numbers for precipitation and humidity.  Will cause
1319      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1320    o pkg/ctrl/
1321      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1322        May be enabled via doPackDiag
1323      *  introduce z-scaling of
1324         + gradient (doZscalePack) and
1325         + control (doZscaleUnpack)
1326    o pkg/mdsio/
1327      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1328      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1329    
1330    checkpoint57b_post
1331    o simplify options in diagnostics_fill arguments (remove weird combinations)
1332    o fix MNC coordinate variables so that they now contain per-face index
1333      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1334      general, EXCH2 grids are only aligned to a "local" coordinate system
1335    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1336    o Implement instantaneous output within pkg diagnostics:
1337      setting a negative frequency in data.diagnostics produces
1338     "snap-shot" output (as opposed to time-average if freq > 0)
1339    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1340      NOTE: change ptracer diagnostics name: use 2 characters to work with
1341            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1342    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1343      becomes the coordinate variable for the 'T' dimension
1344    o add CF-style coordinate variables to MNC
1345      - just a first cut:  numbers are meaningless on the cubesphere and
1346        missing along the T axis but otherwise it works!
1347    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1348    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1349    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1350      this is based directly on what the model compute, so that the content of
1351      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1352    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1353    o clean up build options files for SunOS, in particular
1354      - remove -traditional from xmakedepend
1355      - change -xarch=v9 to -xarch=native for f77
1356      - restore use of make (not gmake)
1357      - add CC=gcc if using g77
1358    o changes per discussion of AM, JMC, & EH3 today:
1359      - move redundant "grid" variables out of "state" -- in preparation of
1360        creating proper CF-style coordinate variables and in recognition
1361        that any/all grid variables can be easily copied (eg. w/NCO) from
1362        the grid files into any of the other NetCDF files
1363      - *always* output grid variables with MDSIO (this will eventually be
1364        changed)
1365      - output MNC grid file if useMNC is true
1366    o every instance of _END_MASTER() has been found and replaced with
1367      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1368      preprocessors
1369    o re-arrange diagnostics pkg initialisation:
1370     - allow each package to extend the available diagnostics list
1371     - add some checking and fix small problems (multi-threaded, ...)
1372     - new S/R diagnostics_fill (replace fill_diagnostics):
1373       look through the short list of active diag. (instead of the long list)
1374       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1375    
1376    checkpoint57a_post
1377    o this set of changes restores TAMC compatibility
1378      tested for global_ocean.90x40x15 adjoint on trough
1379      (what a pain)
1380    
1381    checkpoint57a_pre
1382    o some modifs in tools/build_options for sunos
1383    o call ctrl_pack for ctrl at end for optimcycle=0
1384    
1385    checkpoint57
1386    o add horizontal bi-harmonic viscosity for vertical velocity
1387      - new parameter viscA4W (defaults to viscA4)
1388      - affects only non-hydrostatic code
1389      - to be done: no-slip lateral boundary conditions
1390    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1391    o implement Implicit Vertical advection for pTracers
1392    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1393      (implemented also for implicit vertical diffusion & advection)
1394    o OBCS: extend application of tracer open boundary conditions
1395      to a strip beyond the boundary of width Olx/Oly
1396    o add call monitor to TAF set of required calls (flow directives)
1397      and include in natl_box_adjoint
1398    o untangle a few ifdefs related to cost, ctrl, autodiff
1399      untangel a few ALLOW_ECCO_OPTIMIZATION
1400    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1401      (theta2, salt2 in ecco_cost_weights)
1402    
1403    checkpoint56c_post
1404    o OBCS as control variables
1405      - update ctrl_ad_diff.list, obcs_ad_diff.list
1406      - remove balance of obcs controls from default
1407      - fix index bug nobcs in ctrl_init
1408      - fix dummy fields filen in ctrl_pack
1409      - add dummy weights for obcs
1410    o lsopt: comment out fort.94 output
1411    o optim:
1412      - remove unnecessary header files
1413      - adjusted namelists
1414      - add xerbla.F to Makefile
1415    o exf:
1416      - multiple modifications of exf_check_range
1417      - unit change in exf_init_runoff from [m/year] to [m/s]
1418    o mdsio:
1419      - i/o-vector change debugLevel from debLevA to debLevB
1420    
1421    checkpoint56b_post
1422    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1423      is called from DO_THE_MODEL_IO
1424      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1425      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1426      - clean up PTRACERS_WRITE_TIMEAVE a little
1427    o add another verification experiment that tests both the cfc-pkg and
1428      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1429      reactive tendencies treated inline with regular timestepping
1430    o testreport previously did a lousy job of comparing small numbers, so
1431      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1432      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1433      testreport.
1434    o ptracers_monitor: bug fix for MPI
1435    
1436    checkpoint56a_post
1437    o GCHEM: finish reorganizating the package
1438      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1439        (introduces another 3D-array for each passive tracer, but only if
1440        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1441        gchemTendency is not needed because the timestep is done separately)
1442      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1443      - GCHEM is now---more or less cleanly---separate from PTRACERS
1444      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1445        so clear to me how that should be done in a general way.
1446    o CFC: improve formatting of output in CFC_ATMOS
1447    o PTRACERS:
1448      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1449        that ALL experiments with ptracers enable can be checked. This makes
1450        GCHEM_MONITOR obsolete.
1451      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1452        monitorFreq
1453      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1454    o add PTRACERS (PTR0[1-5]) to testreport output
1455    o exf_check_range:
1456      * default changed to .TRUE.
1457      * will check values for niter0 if debLevA, every timestep if debLevB
1458      * STOP in exf_check_range if 'out of range'
1459      * range chosen generous to allow for potential extema
1460      TBD: a version with stricter range
1461           permitted range would be runtime parameters
1462    o GMredi:
1463      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1464      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1465      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1466    o GCHEM:
1467      - move call to GCHEM_FORCING_SEP, so that it is now called before
1468        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1469      - introduced a useGCHEM runtime flag and applied it everywhere.
1470      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1471        this flag is now only visible within GCHEM-pkg routines.
1472      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1473        be replaced by a 3D array that is computed before thermodynamics; for
1474        this, the tracer ID iTracer had to be included into the parameter list
1475        of ptracers_forcing
1476      - set up forward_step to call gchem_forcing, that will replace
1477        gchem_forcing_int in ptracers_forcing
1478      - cleaning up
1479    o small cleaning of exch2: remove files that are also in eesupp/src
1480    
1481    checkpoint56
1482    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1483    o mnc: cleanup "full" files--fixes out-of-memory problem
1484    o ECCO-GODAE
1485      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1486      * fully merged and updated from SIO code
1487        windstress sign change affects
1488        - exf_inscal_[u/v]stress
1489        - sign of xx_tau[u/v] adjustments
1490        - signs in cost_scat
1491      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1492      * natl_box_adjoint updated and compressed
1493      * 2-level checkpoint switch added
1494        (tested in EXP. 1 of natl_box_adjoint)
1495      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1496    o SVD
1497      * first complete, non-hacked version for SVD calculations
1498      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1499        performed via direct access files admtlm_vector.it????
1500        (via ctrl_[un]pack)
1501      * optimcycle is used for ARPACK iteration counter
1502        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1503      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1504        and add linear transforms where necessary
1505      * controls are initial/final SST, SSS (can be extended; need to check
1506        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1507    o mdsio: filename info to both stderr, stdout
1508    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1509      from sign change
1510    
1511    checkpoint55j_post
1512    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1513      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1514    o add consistent build directories and .cvsignore files to verification
1515    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1516    o make all subroutines 30 or less characters in length for certain older
1517      compilers to work (a thorough search only turns up two routines in
1518      pkg/ptracers)
1519    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1520      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1521    
1522    checkpoint55i_post
1523    o change arrays for total vertical diffusivity (2.D if explicit,
1524      3.D if implicit) ; each ptracer uses its own background value.
1525    o added mnc/NetCDF output capability to ocn_compon_interf
1526      - added bits to verification/cpl_aim+ocn so that it can run on
1527        ITRDA and other clusters without the mpirun "-wd" option
1528    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1529      configuration
1530    o give MNC the ability to create additional files rather than
1531      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1532      - the default is just less than 2GB which is a practical limit
1533        on many systems
1534    o Compute the non-local term using either KPP vertical diffusivity (=default)
1535       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1536    
1537    checkpoint55h_post
1538    o add verification test "vermix"
1539    o remove all the *_ioinc flags and replace with the single global
1540      outputTypesInclusive flag
1541    o allow to set a vertical profile of vertical diffusivity for T & S
1542    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1543    o useMNC moved from data.mnc to data.pkg
1544    
1545    checkpoint55g_post
1546    o Renaming carbon AD experiments to comply with testreport conventions
1547    o Updating adjoint of Held-Suarez hs94.1x64x5
1548    o Fixing directives for non-ECCO forward_step, after ECCO directives
1549      have been fixed to avoid recomp. of do_oceanic_phys
1550      Works well for global_ocean.90x40x15,
1551      but recomp. issue remains for carbon
1552    o Updating adjoint output for natl_box_adjoint after
1553      pkg/ecco has been modified (see taga c55d_post)
1554    
1555    checkpoint55f_post
1556    o rename to timeave_init_fixed
1557    
1558    checkpoint55e_post
1559    o some delicate re-shuffle of store directives to avoid one
1560      extra call of do_oceanic_physics
1561      affects ecco_the_main_loop.F, do_oceanic_physics.F
1562      checkpoint_lev1_directives.h
1563    o NB: this may break global_ocean adjoint temporarily,
1564      but it is clear how to fix it. Will do later, need this now.
1565    
1566    checkpoint55d_post
1567    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1568    o ecco_cost_weights is modified to 1x1 runs
1569    o modifs to allow observations to be read in as
1570      single file or yearly files
1571    o enable to read exf forcing fields as either
1572      single file or yearly files (flag useExfYearlyFields)
1573    checkpoint55d_pre
1574    
1575    o switch between 2-level and 3-level checkpointing
1576    o add ability of MNC to write local and "partial" (eg. 2D slices where
1577      the full 3D field is never actually stored) arrays to NetCDF files
1578      with the correct (that is, the complete multi-dimensional) set of
1579      array indicies
1580      - used in mom_vecinv() to write the diagFreq output
1581      - tested (demonstrated) in verification/aim.5l_cs
1582    o further mnc-ification
1583      - add verification/lab_sea to the list with mnc setups
1584      - fix undefined mnc v-names in cd_code
1585      - add kpp to mnc output (both snapshot and timeave)
1586    o non-hydrostatic code
1587      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1588        in calc_gw.F
1589      - defaults to viscAh
1590      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1591        friction or Leith) in non-hydrostatic mode, as long as there is
1592        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1593    o pkg/cost
1594      extend simple cost functions to treat time mean quantities
1595      (T,U,V) via cost_accumulate_state from cost_tile
1596    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1597        be 2 times larger than the minimum size the advection scheme requires.
1598        now get a perfect conservation of salt in advect_cs test-exp (updated)
1599    o GGL90 (Gaspar's TKE mixed layer)
1600      - add horizontal diffusion of TKE, requires exchanges in
1601        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1602        default. In OPA there is no horizontal diffusion of TKE but the
1603        mixing coefficients are computed from a horizontal average of TKE of
1604        6 points or so. I think that diffusion has a little more physical
1605        justification.
1606      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1607        was in vain)
1608      - mask tke-variable in ggl90_init
1609    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1610    o fix biharmonic diffusion on CS-grid.
1611    o more obcs stuff
1612      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1613        for reading boundary values. This routine is called from
1614        obcs_prescribe_read
1615      - updated obcs_check
1616      - changed sponge layer relaxation parameter units for days to seconds
1617      - turned off sponge layer by default
1618      - changed argument list of OBCS_CALC to myTime+deltaTclock
1619      - fixed about 35 bugs in obcs_external_fields_load
1620    
1621    checkpoint55c_post
1622    o obcs stuff
1623      - new runtime flags useOBCSprescribe, useOBCSbalance
1624      - re-arranged obcs_calc
1625      - moved exf_getobcs to obcs_prescibe_read
1626        obcs_prescibe_read is called after ORLANSKI stuff
1627        and independent of it (executable can contain all).
1628      - updated obcs_check
1629      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1630        These may be necessary only if tangential velocities are
1631        prescribed at OB, not sure, needs testing.
1632    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1633      which simplifies the calls and passes the ifc check-bounds test
1634    
1635    checkpoint55b_post
1636    o add a 2D scalar, Z location, exchange_2 routine.
1637    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1638      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1639      affects advect_cs results (for the wrong reason): update output.txt
1640    o use a more standard discretization for biharmonic viscosity ;
1641     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1642      affects results of dome set-up: update output.txt
1643    o fix gad_advection.F (CubedSphere part), back to version 1.23
1644    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1645    
1646    checkpoint55a_post
1647    o merged code to
1648      * prescribe/read time-dependent open boundaries
1649        (works in conjunction with exf, cal)
1650      * sponge layer code for open boundaries
1651      * each boundary N/S/E/W now has its own CPP option
1652        (healthy for the adjoint)
1653    
1654    checkpoint55
1655    o up-to-date adjoint of previous breaks
1656      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1657      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1658      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1659      - carbon: * remove tr1-related adjoint verification
1660                * add ptracer as control variable
1661    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1662      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1663    
1664    checkpoint54f_post
1665    o in verification/carbin/ remove experiment related to
1666      ALLOW_PASSIVE_TRACER (array tr1 etc)
1667      code_ad/ input_ad/ results_ad
1668    
1669    o add two new packages
1670      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1671        + subject to optimization (memory)
1672      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1673        + subject to reordering (many GOTOs in the original code)
1674        + so far opps is called for every (i,j) point, and then operates in
1675          the vertical; one may want to reorder the scheme in order operate in
1676          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1677          fields)
1678    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1679      - all verification tests compile and run with linux_ia32_g77
1680      - defaults are compatible with current input files--nothing
1681        should change if you were not previously using MNC
1682      - MNC output has been added in numerous places (eg. timeave)
1683        but there are still a few writes not yet do-able with MNC
1684        (this is in progress)
1685      - flags now allow for either/or/both use of MDSIO and MNC and
1686        documentation will soon follow
1687      - numerous small formatting cleanups for ProTeX
1688    o add version info (via BUILD_INFO.h) to MNC and stdout
1689    
1690    checkpoint54e_post
1691    o add two new packages
1692      - pp81 (Packanowski and Philander, 1981), Richardson number and
1693        stratification dependent mixing
1694      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1695      - these scheme operate in a similar manner as KPP (without ghat, of
1696        course), however there is only one diffusivity that is used for both
1697        temperature and salinity (and passive tracers)ç
1698    o add offline package
1699    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1700      provided by Stephanie Dutkiewicz
1701    o genmake2: add ability to search for C compilers and cleanup test output
1702      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1703    
1704    checkpoint54d_post
1705    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1706    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1707      leading to additional shift by 5 days each year of integration
1708       (i.e. leading to considerable offset over the years)
1709    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1710    o start with no AB and no initial filtering (staggerTimeStep):
1711      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1712    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1713      (external loading & cpl import/export stay in forward_step.F)
1714    o update coupling interface to work with new staggerTimeStep
1715    o change MDSIO ptracers_pickup.
1716    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1717    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1718    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1719    
1720    checkpoint54c_post
1721    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1722      this affects (truncation error) output.txt of test-exp:
1723       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1724    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1725    o change Qnet to always be the net heat flux, (+upward).
1726      affects (truncation error) output of natl_box exp.: updated
1727    o define the max number of passive tracers in PTRACERS_SIZE.h
1728    o start to test mnc routinely in exp0
1729    o add sea-ice loading (sIceLoad) as a new forcing field.
1730    
1731    checkpoint54b_post
1732    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1733       impressive on Altix and Opteron systems)
1734    o diagnostics can now write NetCDF files through the mnc package
1735    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1736    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1737    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1738      affects (truncation error) output of lab_sea & natl_box exp.: updated
1739    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1740    
1741    checkpoint54a_post
1742    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1743    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1744    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1745    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1746      + internal_wave (shift in writing cg2d_ini_res)
1747    checkpoint54a_pre
1748    
1749    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1750      - modified verification/lab_sea and natl_box_adjoint accordingly
1751    
1752    checkpoint54
1753    checkpoint53g_post
1754    o prepare splitting of thermodynamics: store convect.counter in common block
1755    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1756      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1757    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1758    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1759    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1760    o restore adjointability
1761    
1762    checkpoint53f_post
1763    o modifications that affect AIM experiment results (update output.txt):
1764      - no advection of S at top interface Nr (pkg/generic_advdiff)
1765      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1766    o AIM pkg:
1767      - include stability function into surf.Flux derivative relative to Tsurf
1768      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1769    
1770    checkpoint53e_post
1771    o merged cylindrical coord configuration
1772    o added rotating_tank experiment
1773    checkpoint53e_pre
1774    
1775    checkpoint53d_post
1776    o faulks upgraded: re-generate output.txt that have changed:
1777       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1778    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1779    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1780    o added Sadourny discretization of Coriolis
1781      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1782      - re-enabled use of omega3 (useAbsVorticity)
1783    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1784      vector-invariant equations
1785      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1786    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1787      hopefully without new bugs
1788      - still to do: biharmonic friction for non-hydrostatic w
1789    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1790    o regenerated output for global_ocean_ebm (using -ieee)
1791    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1792      of mom_common/
1793      - simple re-arrangement of instructions within computing loop
1794    checkpoint53d_pre
1795    
1796    checkpoint53c_post
1797    o new version of coupler for AIM+thSIce and Ocean models
1798     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1799     - land: change Evaporation of snow
1800     - aim with thSIce: fix bug in snow-precip.
1801    o changes to calc_gw.F
1802     - bug fix for w^2 term near the bottom boundary
1803     - (hopefully) improve the lateral slip boundary condtions for use with
1804        partial/looped cells
1805      - because the bug fix changes two verification experiments anyway (exp5
1806        and plume on slope), change the lateral boundary condition from half slip
1807        to the value of no_slip_sides
1808    o ebm package wasnt quite up to the parallel task. Fixed that.
1809    o Adjoint of EBM package + verification
1810      * TLM OK
1811      * ADM not sufficient accuracy yet (needs further testing)
1812    
1813    checkpoint53b_post
1814    o Commiting new energy balance model to repository
1815      * package is pkg/ebm
1816      * verif. is verification/global_ocean_ebm
1817      * references are in ebm_driver.F
1818    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1819    C        Global thermohaline circulation. Part I:
1820    C        Sensitivity to atmospheric moisture transport.
1821    C        J. Climate 12(1), 71-82
1822    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1823    C        Global thermohaline circulation. Part II:
1824    C        Sensitivity with interactive transport.
1825    C        J. Climate 12(1), 83-91
1826    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1827    C        Destabilization of the thermohaline circulation
1828    C        by atmospheric eddy transports.
1829    C        J. Climate 7(12), 1870-1882
1830    o Will need long integration testing.
1831    checkpoint53b_pre
1832    
1833    o created pkg/mom_common in preparation for variable viscosity code
1834    o renamed and split ini_mnc_io
1835    o pkg/land: only liquid water can diffuse or run-off
1836    o AIM using land: soil wetness availability account for snow
1837    o added printMapIncludesZeros to EEPARMS namelist
1838    
1839    checkpoint53a_post
1840    o restore TAMC compatiility for exf_constants.h
1841      (no usage of _d in .h)
1842    o Additional storing in KPP in an attempt to fix
1843      TAMC problem with adjoint of KPP code.
1844      (no success...)
1845      Identical code works fine with TAF.
1846    o Fixed verification/natl_box_adjoint experiments.
1847      Initial conditions for Experiments 4 and 5 are now
1848      set to "SEAICE_initialHEFF=0", which is more reasonable,
1849      and hence gives results closer to that of Experiment 2.
1850      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1851    
1852    checkpoint53
1853    o stable checkpoint with up to date adjoint
1854      TLM tests only run for 1st grdchk at the moment. Its unclear if
1855      this is a code problem or a problem with resetting code for g_
1856      variables that is being autogenerated wrong.
1857      Otherwise:
1858       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1859       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1860         are both still in chaos following their security messes.
1861    
1862    checkpoint52n_post
1863    o various build (mostly genmake2) changes including:
1864      - ability to build/run more easily within Cygwin and MacOS X
1865      - more complicated Makefiles with a stronger dependence on Gnu Make
1866    o pkg/seaice modifications
1867      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1868        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1869        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1870      - changed proxy for geostrophic velocity and updated
1871        verification/lab_sea/results/* accordingly
1872      - removed ADI dynamic solver from pkg/seaice
1873      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1874        they caused a segmentation fault under certain circumstances
1875      - removed unused field WATR
1876    o bug fix in exf-package:
1877      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1878         now reflect that.
1879    o small fixes in the cal-package:
1880      - set reference date to first of January for the 'model'-calendar
1881      - failing of cal_CheckDate in cal_FullDate now actually results in a
1882        warning
1883    o small modifications in exf-package to increase flexibility:
1884      - change climtempfreeze from a constant to a runtime parameter that
1885        is specified in data.exf_clim (default = -1.9)
1886      - introduce runtime parameter windstressmax (default = 2.0) that is
1887        specified in data.exf
1888    o fix in pkg/thsice:
1889      - update Evap (Tsf changes) to be consistent with Latent heat flux
1890      - maintain snow precipitation unchanged (even if Tsf >=0).
1891     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1892    
1893    checkpoint52m_post
1894    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1895      this does not change any of the results, because myIter=0 in swfrac always
1896      lead to jwtype=2 (the default anyway), but the call makes little sense
1897      as a default
1898    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1899    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1900      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1901    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1902    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1903    o extending useSingleCpuIO option to work with new exch2 I/O format
1904      - old-style, missing-tile I/O is still accessible by defining CPP
1905        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1906    o monitor package can write to NetCDF files and/or STDOUT
1907    o fix re-definition bug in MNC_GRID_INIT_ALL()
1908    o doc/api_reference added
1909      - a framework for building an API Reference Manual using all
1910        the "protex" comments embedded in the code
1911      - see pkg/generic_advdiff, pkg/mnc for examples
1912    o MNC:
1913      - make myThid the last argument for all subroutines
1914      - new default for the grid files: NO halos
1915      - add useMNC and other run-time flags
1916      - separate per-file-group handling of the unlimited dimension
1917      - early initialization of MNC w/ flags read at the eeboot stage
1918        and lookup tables set in initialize_fixed
1919      - write all MNC output to a freshly-created directory
1920    o thermodynamics sea-ice (thsice) is now tested with testreport.
1921    o test exp. advect_cs: use the standard cs32 grid ; update output.
1922    o Added functionality to grdchk:
1923      pick global i,j,k position (or nearest wet) where to perform check.
1924    
1925    checkpoint52l_post
1926    o new land formulation:
1927      a) use ground enthalpy as prognostic variable to ensure exact
1928         energy conservation.
1929      b) account for water temperature and for latent heat of freezing
1930         in all processes (rain, run-off, ground storage)
1931      c) compute surface and ground temperature implicitly.
1932    o aim_v23 modification for new land model:
1933      a) Treat separately land / ocean / sea-ice surface fluxes
1934         to allow implicit computation of land & sea-ice surface temp.
1935      b) add snow precipitation.
1936    checkpoint52l_pre
1937    
1938    o fix problem (when 1 tile is empty) in min/max monitor.
1939    o fix bug in timeAve (u,vZetatave in common block)
1940    o no restoring terms under ice for pkg/seaice
1941    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1942    o bug fix for pkg/seaice pickups
1943    o change MNC call locations and add coordinate attributes
1944    o mask vorticity at the corner ; affects global_ocean.cs output
1945    o fix ini_curvilinear_grid ; test CS experiments with mpi
1946    o aim.5l_cs: modify sea-ice fraction input file ; update output
1947    o exf: Adding simple range check routine for exf fields after read
1948    
1949    checkpoint52k_post
1950    o removed top-level directory "diags"
1951      - we migrated these functions to pkg/timeave a long time ago
1952    o fixed bug introduced in pkg/monitor
1953    o accuracy ctrlprec = 32 insuffient for gradient checks using
1954      averaged fields (I/O via cost_averages)
1955      -> use ctrl.h in active_file*.F to control I/O precision.
1956    o paramter list of CALL ADTHE_MAIN_LOOP
1957    o added initial do_the_model_io to ecco
1958    o set all ...Freq to zero after cost_final
1959      taveFreq, dumpFreq, pChkptFreq
1960    o MAIN and ECCO differentiability restored
1961    
1962    checkpoint52j_post
1963    o fix nchklev in tamc.h for global_ocean...
1964    o Bringing flow and store directives up-to-date
1965    o Really weird thing!
1966      call do_the_model_io from the_main_loop with parameters
1967      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1968      TAF places a faulty re-call of initialise_varia
1969      after cost_final call which should not be there!
1970    checkpoint52j_pre
1971    
1972    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1973      error messages
1974    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1975    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1976      debug output
1977    o modfied mdsio_writefield.F to handle non-global files under exch2
1978    o update AIM Cubed-Sphere exp (aim.5l_cs):
1979      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1980    o update AIM Equatorial Channel exp:
1981      use standard aim_v23 pkg and change the SST fields to be more realistic.
1982    o globalFile now works with exch2
1983    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1984      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1985    o limit timeave output for hi-res integrations
1986    
1987    checkpoint52i_post
1988    o removed CPP_EEOPTIONS.h from verification/*/code
1989    o updated the tiling for global_ocean_pressure
1990    checkpoint52i_pre
1991    
1992    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1993      the old pkg/aim).
1994    
1995    checkpoint52h_pre
1996    o shortened offending lines in exch2_send_rx?.template
1997    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1998    o genmake2: add build & execute test for NetCDF code
1999    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2000      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2001    o added useSingleCPUIO flag to monitor.F and mon_out.F
2002    o added temporary hack for sea-ice dynamics on the cube:
2003      metric terms are ignored and it is assumed that
2004      there is no sea-ice on cube faces 1, 2, 4, and 5.
2005    
2006    checkpoint52f_post
2007    o added exch2 cube routines to pkg/exch2
2008    o modified hs94.cs-32x32x5 to use it
2009    o added new grid files to hs94.cs-32x32x5
2010    checkpoint52f_pre
2011    
2012    checkpoint52e_post
2013    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2014      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2015    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2016      to work with implicit vertical advection and AB ;
2017    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2018    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2019     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2020    checkpoint52e_pre
2021    
2022    o fix bug in impldiff when Nr=1 or Nr=2.
2023    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2024    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2025    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2026      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2027    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2028    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2029    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2030    
2031    checkpoint52d_post
2032    o re-tiled many expts to allow comparison in multi-processor mode
2033      - updated output accordingly
2034      - changed hs94.128x64x5 to use intial T from file rather than use the
2035        random number generator
2036    o add infrastructure in model routines for fizhi and gridalt packages
2037    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2038    o changes to permit hi-res, cubed-sphere, configuration
2039      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2040      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2041      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2042        of surface winds for the cube
2043      (A verification experiment, based on global_ocean.cs32x15, but with
2044       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2045       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2046       complete with example surface forcing files and matlab scripts to look
2047       at the output and compare it with that of global_ocean.cs32x15.)
2048    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2049       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2050       to conform to the common rule.
2051    o check-in the first version of the coupler + interfaces for multi-components
2052       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2053       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2054       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2055       - ocean and atmos. share the same horizontal grid (no interpolation).
2056       - exchanges between component and coupler is done in forward_step
2057    o new verification experiment, cpl_aim+ocn:
2058       coupled ocean - AIM atmosphere on cs32 grid.
2059    
2060    checkpoint52d_pre
2061    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2062    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2063    
2064    checkpoint52c_post
2065    o Fixing OPTIONS files for use of exf:
2066      - ALLOW_ECCO not needed
2067      - ECCO_CPPOPTIONS.h should not be included from
2068        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2069        as has been the case in the past
2070      - All cal/exf related options are currently set in
2071        single header file. Should remain so until we
2072        agree on a consistent new policy.
2073    o Removed all CPP options for cal package.
2074      cal has no more CPP options.
2075    o modified STOREs in GAD_ADVECTION
2076    o corrected key comp. for passkey
2077    
2078    checkpoint52b_post
2079    o new version: "thsice" of thermodynamic sea-ice pkg:
2080     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2081     - modify fluxes but do not change theta directly;
2082     - light cleaning of bulk_force pkg (still needed with thsice).
2083     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2084       + output_thsice.txt to test thsice & bulk_force pkgs.
2085    o put back grid & coriolis monitor output.
2086    checkpoint52b_pre
2087    
2088    o call "do_the_model_io" at the beginning (=> dump initial state)
2089    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2090    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2091      (need info on NUMBER_OF_PTRACERS)
2092    o missing PTRACERS headers in some routines
2093    o default tamc.h in pkg/autodiff supposed to crash
2094      to ensure proper customization
2095    
2096    checkpoint52a_post
2097    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2098      - moved surfaceTendencyTice from pkg/seaice to main code
2099      - subroutine FREEZE_SURFACE now limits only surface temperature
2100        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2101        => new output.txt for global_ocean.cs32x15 & global_with_exf
2102      - keep the old version of FREEZE for backward compatibility;
2103        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2104      - corresponding modifs for TAF directives
2105    o added surface flux output variables to TIMEAVE_STATVARS
2106    o time-averaged output for pkg/ptracers
2107    o fix problem with ECCO-related divided adjoint
2108      snapshot file was missing some ad-variables,
2109      but no warning issued by TAF
2110    
2111    checkpoint52a_pre
2112    o some bug fixes for #undef REAL4_IS_SLOW
2113    
2114    checkpoint52 = ecco_c52_e35
2115    o after testing adjoints of checkpoint51u_post
2116    
2117    checkpoint51u_post
2118    o this is the post-merge tag of the ecco-branch
2119      (needs another clean checkout and re-testing)
2120    o various natl_box_adjoint configs and results
2121      but no input fields
2122    o obcs adjoint not yet merged!
2123    o adding ECCO global 1x1 and 2x2 degree configs
2124    o updated/extended some store directives for seaice
2125    o pkg/ecco now containes ecco-specific part of cost function
2126    o top level routines the_main_loop, forward_step
2127      supersede those in model/src/
2128      previous input data.cost now in data.ecco
2129      (new namelist ecco_cost_nml)
2130    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2131    
2132    checkpoint51t_post
2133    o this is the pre-merge tag of the ecco-branch
2134    
2135    checkpoint51s_post
2136    o cleanup: removed various obsolete #define-s
2137    o pkg/grdchk
2138      - renamed 'ph-grd 3' to 'grad-res'
2139      - merged from ecco-branch
2140        (remaining bug fixes for obcs gradient checks)
2141      - additional high-precision output for testreport
2142        (grep for 'precision_grdchk_result')
2143    
2144    checkpoint51r_post
2145    o cleaned up or removed CPP_OPTIONS.h files
2146    o updated results for some of the tests to reflect the new
2147      optfiles (-ieee: -O0 instead of -O3)
2148    
2149    checkpoint51q_post
2150    o cd_code:
2151      - moved cd_scheme.F -> cd_code_scheme.F
2152      - separate read_checkpoint from cd_code_ini_vars.F
2153      - separated cd_code part from write_checkpoint
2154      - updated AD_SOURCE, generated .flow
2155      - added CD_CODE_VARS.h to the_main_loop
2156      - Moving cd_code specific store dir.s to pkg/cd_code
2157    o ctrl package totally restructured
2158      - pack/unpack now optional and decoupled from
2159        xx_/adxx_ I/O
2160      - ctrl_pack/unpack cleaned
2161        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2162      - confined inclusion of AD_CONFIG.h to where necessary.
2163    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2164    
2165    checkpoint51p_post
2166    o create initial cd_code package
2167      - WARNING: the initialization of fields within packages
2168        is broken because INI_FIELDS (where READ_CHECKPOINT is
2169        called) is called *before* PACKAGES_INIT_VARIABLES.
2170        This seems to be backwards since
2171        1) its important to initially zero the entire field including
2172           the "halo" region
2173        2) zeroing needs to be done *before* reading pickup info
2174           and the pickup call might or might not happen in any
2175           particular run
2176      - this needs an overhaul for R2
2177    o cleanup verification/*/code/GMREDI_OPTIONS.h
2178    o cleanup testreport
2179    
2180    checkpoint51o_post
2181    o bringing AD-related verif's up to date with genmake2
2182      - carbon/
2183      - global_ocean.90x40x15/
2184      - hs.94.1x64x5/
2185      - (front_relax/ )
2186    o (more) consistent directory structure for AD-related verif.'s
2187    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2188    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2189    o bug fix in find_alpha.F for MDJWF:
2190      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2191        change rho -> rho-rhoConst
2192      - replace call find_rho to find_rhonum
2193    o initialisation of rFlx extended to full array (required by TAF)
2194      and shifted to thermodynamics
2195    o removed PTRACERS.h in ptracers routine
2196    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2197    o Correcting initialisations for fVerU, fVerV.
2198    o helping TAF to recognize dependency on kUp for
2199      fVerU, fVerV
2200    o Replacing delZ by delR in pkg/ctrl/
2201    checkpoint51o_pre
2202    
2203    o undid all of cp51 pending some cleanups and discussion
2204    o added the [#include "AD_CONFIG.h"] statement to all files that need
2205       it for adjoint/tl #defines
2206     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2207     o removed tools/genmake since it no longer works
2208    
2209    checkpoint51n_post
2210    o modifications to make FREEZE flux visible to pkg/kpp
2211      - moved surfaceTendencyTice from pkg/seaice to main code
2212      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2213      - subroutine FREEZE now limits only surface temperature
2214        (this means new output.txt for global_ocean.90x40x15,
2215         global_ocean.cs32x15, and global_with_exf)
2216    o added surface flux output variables to TIMEAVE_STATVARS
2217    
2218    checkpoint51n_pre
2219    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2220    o added [#include "AD_CONFIG.h"] to all files that use the following
2221      defines:
2222      - ALLOW_ADJOINT_RUN
2223      - ALLOW_TANGENTLINEAR_RUN
2224      - ALLOW_ECCO_OPTIMIZATION
2225    
2226    checkpoint51m_post
2227    o incorporating changes to get TAMC/TAF working in genmake2
2228      - added new TAMC/TAF targets to the Makefile
2229      - various cleanups related to package handling
2230      - these changes should have no impact on the forward model
2231    
2232    checkpoint51l_post
2233    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2234     - faster algorithm for cal_addtime.F
2235     - higher precision arithmetic, where needed
2236     - pkg/exf *startdate variables changed from calendar date to
2237       model integration time
2238    
2239    checkpoint51l_pre
2240    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2241    o enable to apply restoring on S & T only in a latitude band.
2242    o update output (external_forcing_surf modif. change truncation errors)
2243       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2244    
2245    checkpoint51k_post
2246    o change default to: useNHMTerms=.FALSE.
2247     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2248       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2249     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2250        exp1, ideal_2D_oce
2251     - change data file of oceanic exp (leave the results unchanged for now)
2252       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2253    o set gravitySign automatically according to the vertical coordinate used
2254      (and change sign: back to "logical" value: +1 when R increases downward)
2255    o added an include barrier to the default CPP_OPTIONS.h and
2256      removed the #include "PACKAGES_CONFIG.h" from it
2257    o fix a bug in mom_fluxform (from chk51j_post)
2258    
2259    checkpoint51j_post
2260    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2261    o adjusted some flow directives (dynamics, thermodynamics)
2262    o added cubed-sphere case to test cost function
2263    o heckpoint_lev?_directives.h now include
2264      pkg-specific directives, whenever those are enabled.
2265    o Moving pkg-specific flow directives to corresponding pkg
2266      Moving pkg-specific differentiation list to corresponding pkg
2267      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2268      ---> conventions are
2269           - pkg_ad.flow
2270           - pkg_ad_diff.list
2271           - pkg_ad_check_lev?_dir.h
2272    
2273    checkpoint51i_post
2274    o merge of the branch-genmake2
2275      - knowingly breaks the older genmake
2276      - automatic generation of all ALLOW_${PKG_NAME} defines
2277      - new testreport supersedes older testscript
2278    o large number of package inclusion and header cleanups
2279    checkpoint51i_pre
2280    
2281    o new output for adjoin of global ocean vector invariant
2282    o fix for checkpoint of thermodynamic seaice and bulk_force
2283    o Steph gchem various cleanups
2284    
2285    checkpoint 51h_pre
2286    o fixed some single quotes
2287    o modify gchem pkg to be more versatile
2288    o modifications to clean up dic pkg
2289    o add pkg/cfc
2290    
2291    checkpoint51g_post
2292    o provide links for ARPACK and ADM*TLM
2293    o start removing verification/vero/
2294    o update AD-related stuff
2295      (in particular some IF-statements in model/src/ routines)
2296    o adding to verification/global_ocean.90x40x15/ adjoint of
2297      vector invariant setup
2298    
2299    checkpoint51f_post
2300    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2301    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2302      of tracer Green's fucntions for ocean inversion project.
2303    
2304    checkpoint51f_pre
2305    o Added on-the-fly spatial interpolation capability
2306        "USE_EXF_INTERPOLATION" to pkg/exf.
2307      - This is a temporary Cartesian-grid hack until
2308        the super-duper ESMF coupler becomes available.
2309      - See verification/global_with_exf/README for usage example.
2310      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2311        flags and modified pkg/seaice accordingly.
2312    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2313        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2314        non-local transport term.
2315    
2316    checkpoint51e_post
2317    o pkg/mom_vecinv:
2318      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2319      - add time-ave diagnostic of vorticity advection.
2320    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2321    o atmospheric geopotential: - include water vapor effect;
2322                                - use p^kappa in p* scaling.
2323    o land pkg: read initial state from files.
2324    o AIM : add stratospheric drag in the upper level
2325    
2326    checkpoint51d_post
2327    o change function ILNBLNK (=> last non-blank char.) to return zero
2328      (instead of the string length) when the string. char is empty
2329    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2330    o modif's to restore TAMC compatibility
2331      - avoid "_d" constructs in PARAMETER declarations
2332      - avoid interrupting lines by comment lines
2333    o Use cluster local disks for purely local I/O
2334      vs. globally visible disks needed for ctrl stuff
2335      (merged from ecco-branch)
2336      - new active_file_loc... and mdsio_..._loc routines
2337      - affected packages: autodiff, ctrl, grdchk, mdsio
2338    
2339    checkpoint51c_post
2340    o introducing integer flag debugLevel
2341      - debLevZero: suppress all output
2342      - debLevA: standard
2343      - debLevB: equivalent to current debugMode=.TRUE.
2344    o introducing pathname variable mdsioLocalDir for mdsio
2345      that can be specified at runtime
2346      (relevant for cluster I/O to local disk)
2347    `
2348    >>>checkpoint51b_post
2349    adjoint of ptracers
2350    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2351    o extended state in checkpoint_lev?, etc.
2352    o alternative ctrl/cost with tr1 or ptracer
2353    o new comlev1_bibj_ptracers
2354    o new ptracers.flow
2355    o made ptracers_forcing same as external_forcing_s
2356    o added verification for adjoint with ptracers
2357      - adm. grdchk fail so far
2358      - tlm. grdchk OK
2359      - checked tapelev/comlev recomputations: OK
2360    <<<checkpoint51b_pre
2361    
2362    checkpoint51a_post
2363    o added code for biogeochemistry package
2364      - new pkgs: dic, gchem
2365      - new subroutine in ptracers
2366    o modify code for biogeo packages
2367      - in model/src and pkg/ptracers
2368    
2369    checkpoint51
2370    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2371      - autodiff, ctrl, exf, grdchk, seaice
2372      kept separate packages
2373      - cost, ecco, obcs
2374    o updating verification/internal_wave, verification/lab_sea
2375      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2376    
2377    checkpoint50i_post
2378    o Preparing next differentiable checkpoint and sync
2379      of MAIN vs. ecco-branch
2380      - 1st step: this one is differentiable
2381      - 2nd step: next(! not this) checkpoint will have updated packages
2382                  from ecco-branch)
2383    
2384    checkpoint50h_post
2385    o new package "land": provide surface BC for AIM.
2386    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2387    o AIM: use true log-P extrapolation for near surface temp (= as in
2388        F.Molteni paper) ; update aim.5l_cs output.
2389    o New variable in PARM03 for more flexible pickups
2390    o somewhat cleaned package initialisation sequence for
2391      ctrl/ cost/ ecco/ in packages_... routines
2392    
2393    checkpoint50g_post
2394    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2395      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2396      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2397        made the default because of faster convergence than ADI
2398    
2399    checkpoint50f_post
2400    o exf totally restructured
2401      - replaced all exf_set_ routines by one generic exf_set_gen.F
2402        and made sure it's still differentiable
2403      - split exf_getffields.F into new exf_bulkformulae.F
2404      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2405      - updated adjoint/makefile and relevant verif. accordingly
2406    
2407    checkpoint50f_pre
2408     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2409          + change Evap over land. (update aim.5l_cs output)
2410     o added missing .cvsignores and made uniform across expts
2411     o changed configuration of tidal_basin_2d expt
2412     o added pkg/debug functions for tracing code in fatal crashes
2413     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2414     o new fn in pkg/monitor to stop model if solution grows too big
2415     o removed lots of single quotes from comments
2416    
2417    checkpoint50e_post
2418    o make KPP work with PTRACERS
2419     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2420       nearly a copy of kpp_transport_s
2421     - there is no analogue to SurfaceTendencyS, so I have to use
2422       gPtr(of the surface layer) instead
2423    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2424    checkpoint50e_pre
2425    
2426    checkpoint50d_post
2427    o change kpp output from multiple-record state files to single-record state
2428      files analogous to write_state.F
2429    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2430      analogous to the cg2d-related output.
2431    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2432      so that writing to internal file fn (with length 512) fails.
2433    checkpoint50d_pre
2434    
2435    checkpoint50c_post
2436    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2437    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2438    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2439    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2440    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2441    
2442    checkpoint50c_pre
2443    Merging from release1_p13:
2444    o bug fix for pkg/seaice dynamic solver
2445    o Added SEAICE_initialHEFF to pkg/seaice
2446    
2447    checkpoint50b_post
2448    o store u*,v* in gU,V instead of in guNm1,gvNm1
2449    o in order to put the momForcing out of the Adams-Bashforth:
2450      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2451      to timestep.F
2452    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2453    o re-generate output for highly sensitive test-exp:
2454       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2455    
2456    checkpoint50b_pre
2457    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2458    o corrected CPP option mismatch in exf_Bulk... functions for case
2459      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2460    
2461    checkpoint50a_post
2462    o Bug fix for merging between c50 and KPP.
2463      ikey was passed from thermodynamics to kpp_calc via
2464      common block rather than being recomputed in kpp_calc,
2465      in contradiction with new key itdkey.
2466      New key ikppkey created, and tamc.h headers updated.
2467    
2468    checkpoint50
2469    - 2nd step of merge with ecco-branch:
2470      merge changes in ecco-branch back into main trunk
2471    - bug fix in find_alpha
2472    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2473    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2474    - merged some sliced AD support routines
2475    
2476    checkpoint49
2477    merged from ecco-branch:
2478    o exf:
2479      - Enable initialisation of forcing fields to constant
2480        (runtime) values.
2481      - in exf_getffields.F
2482        Reduce i-/j-loop to interior domain, discarding overlaps.
2483        That also fixes wrong TAF-key computations for key_1, key_2
2484        with bulf formulae.
2485      - exf_init.F modify #ifdef for exf_init_evap
2486      - exf_getffieldrec.F, ctrl_getrec.F
2487        The following INT-usages are not safe:
2488          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2489          fldcount = int(fldsecs/fldperiod) + 1
2490        and were modified.
2491    o autodiff: checkpoint_lev...
2492      - updated storing for bulk formulae (some arrays were missing)
2493      - added state for seaice package
2494      - synchronized with main branch
2495    o DIVA:
2496      Modif.s in
2497      - the_main_loop.F
2498      - the_model_main.F
2499      and added cost_final_restore.F cost_final_store.F
2500      o With these changes, it is possible to fully separate
2501        the first forward run to compute the cost function (mdthe_main_loop)
2502        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2503        into separate model executions.
2504        This enables better tuning of DIVA to given queue sizes.
2505      o Loss of cost function value in consecutive DIVA runs is
2506        fixed by storing to 'costfinal' file.
2507      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2508        beginning/end of adjoint integration is accounted for.
2509      The current changes apply to TAF-1.4.26.
2510      TAF has one remaining bug, requiring one manual change
2511      (see MITgcm manual).
2512    o cal: synchronized between MAIN and ecco-branch
2513    
2514    checkpoint48i_post
2515    o Changes to restore differentiability of code w.r.t. previous tag
2516      (mostly adding new routines to make list and replacing
2517      pressure by totPhiHyd).
2518    o Updated and merged grdchk package
2519      - has both ADM and TLM checks
2520      - works for single- and multi-proc.
2521      - output cleaned
2522      - worked successfully for parallel DIVA
2523    o genmake:
2524      - Adding -platform=SP4
2525      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2526    o Modif. for DIVA:
2527      ctrl_unpack should not be called in intermediate DIVA interval.
2528      (similar thing would apply for active files such as
2529      tbar, sbar, psbar, which should not be reinitialised;
2530      only relevant for ecco-branch)
2531    
2532    checkpoint48h_post
2533    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2534    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2535    o Added SEAICE_initialHEFF to pkg/seaice
2536    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2537    
2538    checkpoint48g_post
2539    --- EOS:
2540    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2541      store total Potential in totPhyHyd for diagnostics & EOS.
2542    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2543    --- Pressure/geopotential gradient:
2544    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2545    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2546      ( changes results of global_ocean_pressure )
2547    o NLFS + z-coord.: add eta*Rho' contribution.
2548    o accurate phiHyd when using interface-W at the middle between 2 centers
2549     ( changes results of ideal_2D_oce )
2550    o includes r* 2nd term in potential gradient.
2551    
2552    checkpoint48f_post
2553    Merging from release1_p12:
2554    o Modifications for using pkg/exf with pkg/seaice
2555      - improved description of the various forcing configurations
2556      - added basic radiation bulk formulae to pkg/exf
2557      - units/sign fix for evap computation in exf_getffields.F
2558      - updated verification/global_with_exf/results/output.txt
2559    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2560      (SBO) core products, including oceanic mass, center-of-mass,
2561      angular, and bottom pressure (see pkg/sbo/README.sbo).
2562    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2563      to avoid negative values in shallow regions.
2564      - updated verification/natl_box/results/output.txt
2565      - updated verification/lab_sea/results/output.txt
2566    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2567    o Added useSingleCpuIO option (see PARAMS.h).
2568    o Updated useSingleCpuIO option in mdsio_writefield.F to
2569      work with multi-field files, e.g., for single-file pickup.
2570    o pkg/seaice:
2571      - bug fix in growth.F: QNET for no shortwave case
2572      - added HeffFile for specifying initial sea-ice thickness
2573      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2574    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2575      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2576    o pkg/seaice:
2577      - adjoint-friendly modifications
2578      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2579    
2580    checkpoint48e_post
2581    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2582    o dynamics: change definition of computational domain & adapt mom_fluxform
2583      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2584    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2585        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2586        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2587        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2588        inverted_barometer solid-body.cs-32x32x1
2589      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2590    
2591    checkpoint48d_post
2592    o in preparation for r*:
2593     a) use pre-computed gradient of hydrostatic potential:
2594        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2595     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2596        => affects results of glob_oce_pressure (different truncation error)  
2597      update output.txt of ideal_2D_oce & global_ocean_pressure
2598    
2599    checkpoint48d_pre
2600    o in preparation for r*:
2601      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2602      pass the 2 comp. of the grad. as arguments to momentum S/R.
2603      but for the moment, only used if it does not change the results.
2604    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2605    
2606    checkpoint48c_post
2607    Modifications in treatment of initial flux forcing controls
2608    to avoid extra storing of flux fields.
2609    
2610    checkpoint48c_pre
2611    o Added tidal_basin_2d experiment (currently 1D!)
2612    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2613    
2614    checkpoint48b_post
2615    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2616     (modification to pressure gradient not yet implemented)
2617    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2618      (for U & V) that are used for vertical advection of momentum.
2619    
2620    checkpoint48a_post
2621    o In preparation for r*, use temp. array to compute vertical transport
2622       in flux-form momentum pkg. => change results of few test-exp.
2623      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2624                        lab_sea, natl_box & plume_on_slope
2625    
2626    checkpoint48
2627    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2628    
2629    checkpoint47j_post
2630    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2631    o moved adexch from forward_step to addummy_in_stepping
2632    o added exch in ctrl_map_...
2633    o aveFreq.=0. at end of cost_final to avoid overwrite in
2634      reverse checkpointing loop
2635    o Yet more changes in gmredi:
2636      * adgmredi_calc_tensor
2637        avoiding all recomputation of gmredi_slope_limit
2638      * adgmredi_x/y/rtransport
2639        added flag for excessive storing to avoid recomp. of
2640        u/v/rtans, dTdx/y/z
2641        -> this is not really necessary and very memory-consuming
2642      * adgmredi_slope_psi:
2643        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2644      * gmredi_slope_limit
2645        re-activated full calculation of taperfct for case 'ac02'
2646    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2647    
2648    checkpoint47i_post
2649    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2650    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2651      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2652    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2653    o gmredi: fix few bugs.
2654    
2655    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2656    This will be a good checkpoint to plug into the ecco-branch.
2657    o few modif.'s to get latest version adjointed
2658      (mainly kick out code in ini_linear_phisurf)
2659    o modif's to run adjoint with exactConserv
2660    o case GM_BOLUS_ADVEC should be cleaned
2661      S/R gmredi_slope_psi should be cleaned
2662    o verification/carbon now has exactConserv=.TRUE.
2663    
2664    checkpoint47g_post
2665    o time-average AIM output: becomes independent from statvars time-average
2666      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2667    o After TAF bug fix:
2668      Tested adjoint of gmredi package.
2669      Tests were done with checkpoint47 rather than with latest
2670      checkpoint47f_post since the latter is broken for the adjoint
2671      verification/carbon/ contains both ADM and TLM gradient checks.
2672    Here they are, before they get changed/lost/stolen.
2673    Mostly modif.'s to fix numerical sensitivities.
2674    Gradient checks OK for
2675    - GM_taper_scheme:
2676      * clipping
2677      * ac02
2678      * linear
2679      * glw91
2680      * dm95
2681      * ldd97
2682    - GMREDI_OPTIONS:
2683      * GM_VISBECK_VARIABLE_K
2684      * GM_NON_UNITY_DIAGONAL
2685      * GM_EXTRA_DIAGONAL
2686      * GM_BOLUS_ADVEC
2687    in conjunction with data.gmredi parameters to be checked in
2688    in a few minutes under verification/carbon/code/
2689    
2690    checkpoint47f_post
2691    Merging from release1_p10:
2692    o modifications for using pkg/exf with pkg/seaice
2693      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2694        and SEAICE_EXTERNAL_FLUXES
2695      - pkg/exf CPP options EXF_READ_EVAP and
2696        EXF_NO_BULK_COMPUTATIONS
2697      - usage examples are Experiments 8 and 9 in
2698        verification/lab_sea/README
2699      - verification/lab_sea default experiment now uses
2700        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2701    
2702    checkpoint47e_post
2703    o created a tag prior to creating a branch
2704    
2705    checkpoint47d_post
2706    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2707      at the bottom boundary had an erroneous half slip boundary condition
2708    o added bottom drag and no slip boundary condition capabilities to
2709      oceanic pressure coordinates code
2710    o added new verification experiment global_ocean_pressure, this experiment is
2711      also described in the tutorial section of the manual
2712    checkpoint47d_pre
2713    
2714    checkpoint47c_post
2715    o Added a verification experiment for a global cubed-sphere ocean run
2716      -  verification/global_ocean.cubed32x32x30
2717      -  uses pkg/therm_seaice and pkg/bulk_forcing
2718    
2719    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2720    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2721      when using P-coordinate; only implemented for atmospheric config.
2722    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2723      NOTES: requires option NONLIN_FRSURF to be "#define".
2724    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2725    
2726    checkpoint47b_post
2727    Merging from release1_p9:
2728    o pkg/seaice
2729      - removed GOTO's and added taf directives
2730      - double precision constants to reduce the g77 (Linux)
2731        to F77 (SGI) differences reported in release1_p8
2732    o tools/genmake
2733      - added SGI options
2734    o verification/testscript
2735      - updated to that of checkpoint47a_post
2736    o verification/global_ocean.90x40x15/input/eedata
2737      - modified for SGI f77 compatibility
2738    o verification/lab_sea
2739      - added description of sea-ice model
2740      - added missing matlab routines
2741      - added test of thermodynamics parallelization
2742    
2743  checkpoint47a_post  checkpoint47a_post
2744  o new pkg: aim_v23  o new pkg: aim_v23
2745   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.

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