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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.850 by dimitri, Wed Jul 18 22:53:34 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 gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8      scheme and the corresponding test case (under front_relax dir). For now,
9      only available with Skew-flux form and not yet tested in realistic set-up.
10      adjoint: store directives updated, but gradient checks deteriorated,
11      so maybe GM/Redi adjoint is now broken.
12    o seaice adjoint
13      * add AREA, HEFF, HSNOW as control variable
14        (should not change lab_sea results)
15      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
16    o pkg/seaice:
17      * added computation of saltFlux in seaice_growth;
18        For time being, sea ice salinity is assumed constant
19        contribution of snow flooding to freshening of sea ice is neglected.
20        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
21        defaults to 0.0 in order to maintain backward compatibility.
22        Typical values for SEAICE_salinity are 4 to 10 g/kg.
23      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
24      * added SEAICE_availHeatFrac, which specifies fraction of surface level
25        heat content used to melt or grow ice
26      * commented out cap of HICE: it helps keep ice thinner
27      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
28      * applied OBCS T/S mask to HEFFM sea ice mask
29    
30    checkpoint59d
31    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
32     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
33     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
34    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
35     and change default value of parameter "GM_Small_Number";
36     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
37       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
38       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
39    o pkg/ecco: cost function when applying pkg/smooth to controls
40    o pkg/ctrl: add forcingPrecond run time parameter
41    o pkg/seaice:
42     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
43     - fix bug in metric terms of u-equation in LSR solver (implicit part),
44       changes verification/lab_sea
45     - rearrange implicit part of u-equation in LSR solver to make it easier to
46       read, understand, and debug. This causes changes at the truncation level.
47     - fix (serious) bug in the boundary conditions (sign error in the implicit
48       part) of the LSR solver. Changes all LSR results.
49     - fixed problem with HSNOW initialization to avoid thick snow when AREA
50       is initilized with small values - does not change lab_sea results.
51     - added HsnowFile initialization capability
52    o pkg/smooth: addition to model/src and pkg/ctrl so allow
53     initialization of pkg/smooth and application to control vector
54    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
55    o dependencies: pkg/profiles requires pkg/cal
56    o pkg/profiles:
57     - added option ALLOW_PROFILES_GENERICGRID
58         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
59         that interpolation information (grid points and coefficients) is provided
60         within the netcdf input files.
61         -> sample matlab scripts can be found in MITgcm_contrib/gael
62         that allow you to prepare netcdf input files.
63     - also modified: cleaner include statements, cleaner error print statements,
64       cleaner stops when error, and more tests of the netcdf input files consistency.
65    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
66    o pkg/seaice:
67     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
68       requires a new routine: seaice_diagnostics_fill.F
69     - make sure that seaice does not move if not forced (pressure replacement
70       method, Hibler and Ip, 1995), changes results
71     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
72     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
73       It is turned off by default (=-1.), because it changes the results.
74     - make it possible to read AREA from a file, too.
75    
76    checkpoint59c
77    o add S/R and diagnostics for oceanic mixed-layer depth
78    o move GMRedi call after all vertical mixing schemes (including KPP)
79    o pkg/thsice:
80     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
81      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
82    o pkg/obcs:
83     - bug fix for balance code
84    o pkg/seaice:
85      - allow values of SEAICE_elasticParm > 1
86      - add new parameter SEAICE_evpTauRelax as an alternative
87        to SEAICE_elasticParm
88      - make lsr boundary conditions free slip (by default), changes result
89      - add code for no slip boundary conditions for lsr
90      - set minimum of zeta to zero (and not 4e8) (changes results)
91      - add a cap on AREA after advecting AREA if seaice_growth is not called
92    o change calculation of Visbeck K:
93      - no longer depend on tapering scheme; instead, compute slope (limited
94        by GM_maxSlope). this is equivalent to what was comuted before with
95        clipping or linear tappering.
96      - fix vertical averaging (wrong by 1/2 level)
97      - leave the old version (but will not be maintained) within
98        #ifdef OLD_VISBECK_CALC / #endif
99      - update output of exp. ideal_2D_oce
100    o change error catch in calc_r_star to improve vectorization
101    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
102      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
103    o adjoint:
104      Re-organized adjoint checkpointing according to Matt Mazloff
105      (but with modifs/completions/cleanups)
106      Storing is now bundled into large arrays to optimized I/O
107      (and second step in cleanup of the_main_loop)
108    
109    checkpoint59b
110    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
111      - export/import (between ocean & coupler) fields needed for ocean DIC.
112    o pkg/seaice:
113      - get rid of three more exchanges seaice_calc_viscosities (required
114        different loop boundaries in seaice_lsr and seaice_ocean_stress)
115      - bug fix in seaice_ocean_stress (update of lab_sea required)
116      - reduce loop boundaries to necessary minimum also in seaice_evp
117      - go back to the old way of computing deltaC/Z as the adjoint likes that
118        better
119    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
120      passive tracer to an Age Tracer) + update output.txt
121    o pkg/exf:
122      - implement A-grid / C-grid selection for wind-stress input files.
123      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
124      for now, in exf_bulk_largeyeager04.F only :
125      - change implementation for case where windspeed + 2. components wind-stress
126        are read-in. AND use rhoConstFresh to convert evap.
127    o pkg/seaice:
128      - use correct EXCH_UV for wind-forcing (on A-grid).
129      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
130        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
131    o pkg/exf:
132      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
133      EXF_INTERPOLATION:
134      - merge global_with_exf/code version of exf_interp_read.F
135        to the main code ;
136      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
137        reading the file ; Important: This options needs to be defined to recover
138        previous code.
139        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
140      - no longer loose real*8 precision along the way when using exf_iprec=64.
141    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
142      - change discretisation of evp-solver in order to avoid another exchange
143        (changes lab_sea) and clean up a little
144      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
145        help the adjoint (this also changes the results slightly)
146      - add a few "_d 0" where they had been missing in seaice_evp.F
147      - cleaning up: remove unused seaice_calc_rhs.F
148    o pkg/exf: some cleaning-up:
149      - change various "constants" into runtime parameters
150      - cleaned-up Large&Yeager04 routine which should eventually
151        replace exf_bulkformulae.F (changed names of S/R and CPP)
152        and merged various ALLOW_ATM_WIND options
153     only used with thsice pkg (in thsice_get_exf.F):
154      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
155        which are used when useStabilityFct_overIce=TRUE (= the default)
156      - change default values of ice & snow emissivity and scale downward LW
157        by ice & snow emissivity.
158    o pkg/thsice:
159     fix few little problems, in thsice_calc_thickn.F:
160      - growth vertically (and not laterally) if iceFrac == iceMaskMax
161      - melt only laterally if hIce < hThinIce (as the comments say)
162      and in thsice_extend.F:
163      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
164      - start to form ice as soon as the minimum ice-volume is reachable.
165     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
166      and cpl_aim+ocn
167    o pkg/kpp
168     - move computation of surface related input fields to KPP into a new
169       subroutine kpp_forcing_surf.F
170     - remove wrong (within bi,bj loops) EXCH calls.
171     - little cleaning (add argument myThid in last position, cvs header ...)
172     - for now, fix conservation problem by exchanging KPPviscAz (may not
173       be the best fix)
174    o pkg/seaice
175     - check for inconsistent evp parameter/cpp-flag combination
176     - remove leftover errIO flat for obsolete name list error handling
177    o OpenAD
178     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
179    
180    checkpoint59a
181    o pkg/seaice: some parameter clarifications and a little bit of clean up
182    o pkg/thsice: rename run-time parameters:
183       himin       -> hIceMin
184       himin0      -> hThinIce
185       hihig       -> hThickIce
186       i0          -> i0swFrac
187       transCoef   -> bMeltCoef
188       frac_energy -> fracMelting
189      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
190       with default values (for now) that do not change the results.
191      remove old version of thsice vars advection in pkg/seaice.
192    o in FFIELDS.h:
193      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
194      - make pLoad & sIceLoad always available (but still only used if
195         ATMOSPHERIC_LOADING is #define).
196    o pkg/kpp: replaced _KPP_RL with _RL
197    o bug fixes for vertical diffusivity computations when both KPP and
198        3D diffusivity arrays are used.
199    o pkg/seaice: fix bug in evp solver, while doing that
200      - change (improve?) discretization of stress computations for both
201        cgrid-lsr and evp solver
202      - add a new routine to compute strain rates
203      - the above changes lab_sea results
204      - add no slip conditions for evp solver (off by default), lsr-version
205        may follow
206      - fix exchange for shear at Z-points (does not change lab_sea)
207      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
208        (to force the user to pick a time step since there is not "safe" way
209        of choosing it)
210      - add principal stress diagnostics
211      - rearrange fields for evp a little to avoid having to call a: too many
212        exchanges and b: exchanges for stress trensor components which we do
213        not have.
214      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
215        of evp, complete rewrite for lsr case (latter is does not yet work
216        in all cases)
217    o pkg/kpp: add code to have mixing in shelf ice caverns
218      - add myThid to all kpp routines (long overdue)
219    
220    checkpoint59
221    o pkg/exf:
222      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
223        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
224      - move exf header files from lower_case.h to UPPER_CASE.h ;
225        add missing cvs Header & Name
226      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
227      - add namelist param. selectStressGridPosition, exf_monFreq
228      - retire many _CLIM routines, and remove data.exf_clim
229        + params moved to data.exf
230        + climsst, climsss now handled by exf_set_gen, i.e.
231          climss?period=0 refers to constant field,
232          climss?period=-12 to monthly forcing
233      - split up namelists in data.exf
234    o pkg/seaice:
235      - remove seaice_exch and seaice_exch_uv
236      - remove superfluous exchange of theta
237      - add myThid to seaice_budget_ocean/ice
238      - add new interface for atmospheric wind forcing (C-grid only)
239        + new routine
240        + two new field (taux, tauy for stress over ice)
241        + removed one global field (DAIRN) for C-grid case only
242    o pkg/thsise
243      - 2nd set of modifs for thsice adjoint in conjunction with exf
244    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
245    
246    checkpoint58y_post
247    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
248      vertical diffusivity, similar to that in MOM4; turned on using
249      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
250      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
251    o Added capability for 3D specification of background vertical diffusion
252      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
253      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
254      "data" file that contains the 3D vertical diffusivity coefficients.
255    o ice dynamics (pkg/seaice) with thsice thermodynamics:
256      - add code within pkg thsice to advect & diffuse sea-ice fields
257      similar to (and will replace) what has been added in  seaice_advdiff.F,
258      but: - conserving Mass, Heat & Salt.
259           - better when using non-linear advection scheme (not yet fully tested)
260           - can also be used in atmospheric set-up (for now, only the diffusion).
261    
262    checkpoint58x_post
263    o IO option for global-file compact format:
264      - add options when generating topology (utils/exch2/matlab-topology-generator)
265      - add I/O capability (pkg/mdsio).
266      - adapt utils/matlab/rdmds.m to read this format.
267      for now long-line format not yet supported by pkg/mdsio (& exch2).
268    o shelfice: add a few diagnostics
269    
270    checkpoint58w_post
271    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
272      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
273      (and replace horiVertRatio in NH code).
274      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
275                         and tutorial_plume_on_slope (sensitive to truncation)
276    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
277      directly to drive seaice model (C-grid only)
278    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
279     - reintroduce computation of wind from stress,
280     - compute tau (in exf_bulkformulae.F) from windstress averaged to
281       mass points to avoid tau = 0
282     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
283    o rdmnc.m: make it work with "global" files created with gluemnc
284    o rdmnc.m : some improvements in dealing with singleton dimension
285      (tested on all testreport mnc output files).
286    o genmake2: disable pkg/profiles if netcdf test fails.
287    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
288    o move call to cal_readparms up to make calendar parameters/variable available
289      to all packages
290    
291    checkpoint58v_post
292    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
293      useDynP_inEos_Zc tested.
294    o pkg/exf: changes to properly interpolate/mask/scale initial fields
295    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
296      and portions thereof.  See read_cs.txt for description and examples.
297    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
298      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
299      following the great-circle arc between those 2 points.
300    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
301      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
302    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
303     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
304     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
305     - still needs work (not working with some options ; efficiency to improve)
306       and serious testing.
307     - use this scheme for temperature & salinity in 2 advection test exp.:
308       advect_xy & advect_xz, respectively.
309    
310    checkpoint58u_post
311    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
312    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
313    o testreport: add option "-skipdir" to skip some test.
314    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
315      momentum calculation.
316    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
317    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
318      remove checkpoint.F and the_correction_step.F (no longer used);
319      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
320    o add option (linFSConserveTr) to correct for tracer source/sink due to
321      Linear Free surface
322    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
323    o pkg/thsice: fix reading mnc-pickups
324    
325    checkpoint58t_post
326    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
327    o pkg/mdsio:
328     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
329       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
330       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
331     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
332     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
333       either MDS_READ_FIELD or MDS_WRITE_FIELD )
334     - new S/R (to replace MDSWRITEMETA), which allows to write more
335       informations (variable names, time ...) to meta files.
336     - modify rdmds.m to give back the meta file content.
337    o pkg/diagnostics: change vertical interpolation to be safer, and more
338       flexible (define p-levels to interpolate to in data.diagnostics);
339      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
340       diagnostic pointer.
341    o pkg/seaice: more cleaning up of seaice_growth, added many comments
342    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
343    o fix multi-category seaice:
344     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
345       SEAICE_MULTICATEGORY
346     - fix short wave heat flux
347    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
348       and allow to use EVP solver. Change forward lab_sea: test both EVP
349       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
350    o Initial check-in of lab_sea adjoint
351      (very similar to natl_box_adjoint/code_seaice)
352      * used C-grid and EVP solver
353      * used KPP, GM/Redi
354      * uses inAdExact=.TRUE.
355      * gradient checks fail for both ADM and TLM
356        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
357        f.d. gradients actually seem more problematic than ADM, TLM gradients;
358        issue is related to forward mismatch between g77 an ifort
359    o pkg/seaice: overhaul of thermodynamics
360     - growth.F and groatb.F are replaced by new routine seaice_growth.F
361     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
362     - move a few global fields out of SEAICE.h into seaice_growth.F and
363       make them 2D (FICE/QNETO/ ...)
364     - remove FO (it is the same as QNETO)
365     - introduce a few local fields to avoid modifying external fields such
366       as atemp, etc.
367    
368    checkpoint58s_post
369    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
370      changed exf_set_gen.F so that
371        genperiod=0 means input file is one time-constant field and
372        genperiod=-12 means input file contains 12 monthly means
373    o CG2D: use pre-computed solver main-diagonal (stored in common block);
374      this affects truncation error ; generate new output file for exp. which
375      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
376        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
377        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
378        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
379        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
380        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
381    o start implementation of deep-atmosphere and anelastic formulation
382    o verification: remove 2nd copy of input files and use script "prepare_run"
383      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
384    o mom_common/vecinv/fluxform: fix a few initialisation isssues
385    o profiles: fix for multithreaded case
386    
387    o diagnostics: rename few diags:
388      s/'PRESSURE'/'RCENTER '/g
389      s/'TICE    '/'oceFreez'/g
390      s/'TAUX    '/'oceTAUX '/g
391      s/'TAUY    '/'oceTAUY '/g
392      s/'SWFLUX  '/'oceQsw  '/g
393      s/DIFx/DFxE/g
394      s/DIFy/DFyE/g
395      and add few ocean-forcing diagnostics:
396      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
397    o modifications to pkg/seaice/growth.F and budget.F, which change results of
398      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
399      as actual snow thickness.  It now refers everywhere to effective snow
400      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
401    
402    checkpoint58r_post
403    o modifications to pkg/seaice/growth.F, which change results of
404      lab_sea experiment: fixes pertain to melting snow over open water, to
405      masking EVAP under sea ice, and to using the correct AREA variable for
406      computations of EVAP, PRECIP, HSNOW, and GHEFF
407    o add ability to read bathy, salt, and theta using MNC (off by def)
408    o add flooding algorithm and advection of HSNOW for pkg/seaice;
409      both are turned off by default and do no change any results
410    o seaice advection with pkg/thsice: a step toward the use of non-linear
411      advection scheme, but #ifdef or commented out for now (requires more EXCH).
412    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
413      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
414      in natl_box (affects results @ truncation level: update output.txt)
415    o multi-threading and IO:
416      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
417      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
418        (needed to work with SingleCpuIO): tested in all verif. exp.
419    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
420      affects the results (but none of the verification test uses this scheme).
421    o Adding some pkg/diagnostics capability to pkg/seaice
422      (will certainly be subject to changes)
423    o ctrl: adding new control variables:
424      lwflux, lwdown, evap, snowprecip, apressure, runoff
425    
426    checkpoint58q_post
427    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
428      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
429      high_res_cube configuration by 4% on Columbia.
430    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
431      add (in global_with_exf/code) a version of EXF_INTERP_READ without
432      dynamical allocation (seems to work in multi-threaded).
433    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
434      single CPU io) so that TAF does not have to see EESUPPORT.h
435    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
436    
437    checkpoint58p_post
438    o obcs: stop if obcs is used with useCDscheme = .true.
439    o shelfice:
440     - fix a sign error so that no slip at shelfice interface works
441     - remove stop for combination non-hydrostatic code and shelfice. That does
442       not mean, that the results are correct, but at least they are numerically
443       stable
444    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
445    o added adjoint exch routined for all exch*3d* routines
446      and updated flow directives
447    
448    checkpoint58o_post
449    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
450      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
451    o change controling S/R for writing pickup file (new S/R do_write_pickup)
452      and clean-up reading/writing of pickup files.
453    o fix local version of read/write pickup (NH part) in rotating_tank/code
454    o simplify EXCH interface:
455     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
456     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
457    o added the regrid package
458    o shelfice:
459     - add a simple boundary layer scheme to reduce noise
460     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
461    
462    checkpoint58n_post
463    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
464       local variable (not in common block).
465    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
466      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
467      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
468        to work with SingleCpuIO.
469    o add "_d 0" to real constant of pkg/cfc subroutines ;
470       update exp. cfc_exemple & tutorial_cfc_offline output files.
471    o multi-threading and IO:
472      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
473        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
474      - barrier before and after reading.
475      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
476      - avoid using MDS_WRITELOCAL for LAND pkg output.
477      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
478        common-block variables ; Allows multi-threading with master-thread IO.
479    o change default MAX_NO_THREADS from 32 to 4 ;
480      and stop cleanly when MAX_NO_THREADS is too small.
481    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
482    
483    checkpoint58m_post
484    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
485       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
486    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
487       keep global_ocean.90x40x15 (for AD testing) with former secondary test
488       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
489    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
490        add MITgcm_tutorials (= code + all the tutorials)
491    o ecco, option to compute cost for total ssh (mean+anom)
492    o consistent with addition of ptracer and ssh in pkg/profiles
493    o profiles: adding ptracer and ssh
494    o testreport: change multi-test output-file name
495      (from output.txt.{name} to output.{name}.txt)
496    o profiles: now ok for mutli-tiles case
497    o seaice: add 4 parameters for different advection schemes for area,
498      (effective) seaice thickness, enthalphy, and snow height. Their default
499      is the standard parameter SEAICEadvScheme
500    o calc_gw:
501     - add cosFacU in zonal viscous flux (harmonic.visc.).
502     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
503       of tutorial_plume_on_slope.
504    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
505    o calc_gw: true flux-form, account for horizontal grid spacing.
506      update rotating_tank results, but not plume_on_slope (affected at
507      truncation level, 11 digits).
508    
509    checkpoint58l_post
510    o calc_gw:
511     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
512     - remove side-drag for now (need to fix it); update plume_on_slope results.
513     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
514    o commit code to make SST/SSS weights spatially variable
515      (based on either variable in-situ or variable initial T/S weights)
516    o pkg/ecco:
517      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
518        now based on horizontally varying weights wthetaLev, wsaltLev
519      * cost_averagesflags now returns year indices in addition to day, month
520      * sflux balance is performed on annual basis
521        (sflxumm, sfluxmm2, bal_sfluxmm)
522      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
523        including separate counting and multipliers
524    o pkg/rbcs
525      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
526    
527    checkpoint58k_post
528    o testreport:
529     - always build in dir. "build" (if not there, mkdir build instead of building
530       & running in input)
531     - run in dir run (if it exists), in build otherwise.
532     - call prepare_run (if input/prepare_run exists)
533     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
534    o pkg/exf modifications to interpolation and rotation routines for more
535       reasonable treatment of North Pole singularity: for tracers North Pole
536       value is set to northernmost zonal-mean value, for zonal velocity it is
537       set to zero, and for meridional velocity it is set to northernmost value.
538    o pkg/exf/exf_check_range.F
539     - add tile index to diagnostics and move stop statement to the very
540       end of the routine.
541    o pkg/diagnostics: (diagnostics_main_init.F)
542      define title of isomorphic variables according to the current config.
543    o pkg/thsice with pkg/seaice dynamics:
544    - fix domain of computation (interior only, required for exf) and do exchanges
545    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
546    o towards a standard way of dealing with multi-threading in MONITOR
547      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
548    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
549       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
550    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
551    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
552    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
553       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
554    o tracer advection:
555     - clean-up and simplify calc_common_factors.F
556     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
557       advection subroutine (but still not used within DST advection S/R)
558    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
559    
560    checkpoint58j_post
561    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
562      from file (collects calls previously in FORWARD_STEP)
563    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
564    o adjoint store dir. adjusted accordingly
565    o genmake2
566      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
567    
568    checkpoint58i_post
569    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
570      on wind stress (SEAICEstressFactor defaults to 1.)
571    o Total number of Timers is finite (<=40): comment out 2 non-essential one
572      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
573    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
574      on CS-grid: no longer loosing mass.
575    o exf & curvilinear-grid: no longer modify longitude xC & xG.
576    o pkg/ggl90: fix sloppy output and fix a bug
577    o pkg/seaice: added SEAICEuseEVPpickup parameter
578      - Set to false in order to start EVP solver with
579        non-EVP pickup files when using SEAICEuseEVP
580      - fix sign error in diffusion in seaice_calc_rhs
581    
582    checkpoint58h_post
583    * Modifications for bottom topography control
584      o replace hFacC by _hFacC at various places
585      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
586      o add non-self-adjoint cg2d_nsa
587      o update autodiff support routines
588      o re-initialise hfac after ctrl_depth_ini
589      o works for 5x5 box, doesnt work for global_ocean.90x40x15
590    * Adding verification for 5x5 box (4-layer) bottom topography control
591    
592    checkpoint58g_post
593    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
594       used for mean seasonal cycle, mean diurnal cycle); add an example
595       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
596    o pkg/ggl90:
597      - add parameter (minimum surface kinetic energy)
598      - fix bug (avoiding division by zero)
599    o couple pkg/thsice to pkg/seaice:
600      - modify advection in seaice to accomodate new scalar fields to be advected
601      - only muliDimAdection scheme work with seaice/thsice
602      - mapping of thsice-variables to seaice-variables, back and forth
603      - does not break the verification experiments, but does not give the
604        desired results either
605    o pkg/seaice
606      - make (default) second order advection a bit less confusing?
607    
608    checkpoint58f_post
609    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
610      to pkg/seaice):
611      - new routines thsice_map_exf and thsice_get_exf provide the interface
612      - add an additional formal parameter to thsice_solve4temp
613    o pkg/exf:
614      - add new fields wspeed, snowprecip (to be able to couple to thsice)
615      - correct Stefan-Boltzmann constant
616      - new parameter for longwave surface emittance
617      - separate some stuff from exf_bulkformulae into new routines  
618        exf_radiation, exf_wind
619      - add new parameters and constants: longwave emissivity for ocean, ice
620        and snow, evaporation parameters over ice
621      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
622        either wind from stress or stress from wind
623    o pkg/thSIce:
624    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
625    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
626       and THSICE_CALC_THICKN
627    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
628    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
629      to make debugging easier.
630    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
631    o pkg/bulk_force:
632      - clean-up comments and parameters ;
633      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
634    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
635      generate new output for test-experiment: aim.5l_cs.thSI
636    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
637      testreport accordingly
638    
639    checkpoint58e_post
640    o SEAICE_CGRID adjoint done
641    o R_STAR adjoint implemented.
642      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
643      * need to sort out init. of h0facc, etc.
644    o Make pkg/profile fully independent of ecco,cost, etc. stuff
645      to be able to use it in pure forward.
646    
647    checkpoint58d_post
648    o upgrade simple test-experiment to tutorial example:
649     step.1: duplicate the experiment and (step.2) will remove the old copy.
650      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
651      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
652      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
653      tutorial_global_oce_biogeo    <- copy of dic_example
654      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
655      tutorial_plume_on_slope       <- copy of plume_on_slope
656      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
657      tutorial_global_oce_optim     <- empty for now (David ?)
658      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
659     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
660    o correct a sign problem in cost_scat.F
661    o obcs and ptracers: fix boundary conditions for advections schemes
662      with larger stencil
663    o thsice adjoint: start
664    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
665      completeness
666    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
667      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
668    o ptracers adjoint:
669      * avoid extensive recomputatations
670      * fix missing re-init. of gptr (missed by TAF)
671    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
672      me to turn off the excessive output to STDOUT that this package produces
673    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
674      and add those terms in Vector-Invariant formulation.
675    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
676      if the control period (xx_hfluxperiod etc) is 0
677    o in profiles pkg, clean routines and fix details
678    o in ecco pkg, reading ssh data:
679      fix problem in case the model does not start at iter0=0
680    o fix mnc-pickup/restart for ptracers
681    o new package prifiles:
682      code to compute profile-based cost by Gael Forget
683      (modifs in ecco, ctrl, autodiff)
684    o Benign bug fix in initialization (spotted by M. Mazloff) of
685      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
686    
687    checkpoint58c_post
688    o adjoint: finish NLFS adjoint and provide reference output in
689      verification/global_ocean.90x40x15/results_ad_nlfs
690    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
691      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
692      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
693      with SEAICE_CGRID defined.
694    o move calendarDumps from "data" to "data.cal" and clean-up the code
695      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
696    o add useEXF & useCAL flags (for now, set in hard-coded way)
697    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
698      (were missing in NH mode, and wrong in quasihydrostatic mode).
699      waiting for Chris updated version of calc_gw to add those CALLs.
700    o fix bug in quasihydrostatic S/R ;
701      add a test for this option: global_ocean.90x40x15.qshyd
702    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
703      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
704    o add on/off flag useOffLine for package OFFLINE
705    o seaice:
706      - modify advection so that it works also on the C-grid
707      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
708        problem in multi-tile runs with C-grid
709      - add flags for clipping ice velocities and/or masking solver forcing
710      - fix drag (ocean on ice) formulation and a bug that caused noise in the
711        C-grid solver
712      - added a few comments to seaice_diffusion.F
713      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
714        are now exclusive)
715      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
716        required re-ordering the code a little:
717       + make DAIRN global variable (defined in SEAICE)
718       + move computation of the viscosities eta and zeta into a new separate
719         routine (because I need to recompute them in seaice_ocean_stress.F)
720    
721    checkpoint58b_post
722    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
723      update output.txt of exp. aim.5l_cs.thSI
724    o various mnc cleanups and improvements:
725      + shrink lookup tables by factor of ~4
726      + better error reporting when running out of lookup space
727      + able to handle longer path/file names (up to 500 chars)
728    o adjoint:
729      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
730      - TBD: "hidden" mom_vecinv recomp. in dynamics
731    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
732     (allow to differentiate between forcing components using new integer flags:
733      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
734     and add new flag to put Dissipation tendency out of Adams-Bashforth.
735    o ecco
736      - enable trend removal from SSH anomaly obs.
737    o adjoint
738      - a fix for PmEpR when #undef EXACT_CONSERV
739      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
740      - try to fix "hidden" recomp. in forward_step for NLFS
741        (NLFS seems broken sometimes after I checked it in)
742    o seaice:
743     - add c-grid version of the dynamic solver:
744       + three new routines that are the c-grid substitute lsr, dynsolver
745         and ostres
746       + put a few fields that were local to dynsolver into global common
747         blocks, so that I can move the computation of stresses etc into
748         seaice_lsr (saves coding but may break the adjoint).
749     - replace more hardwired parameters by runtime parameters
750     - add ice masks that mask the rhs of the implicit solvers where there
751       is no ice (commented out in seaice_dynsolver, because i am not sure
752       if this works properly), eventually this should replace the clipping
753       of ice velocities in seaice_dynsolver to +/-40cm/s.
754    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
755      include it only where its needed
756    o move balancing of fluxes before the call of external_forcing_surf
757    o seaice:
758      - correct units of turning angles (now they are really in degrees)
759      - move computation of GWATX/Y out of main routine into dynsolver
760      - initialize GWATX/Y in seaice_init
761    o Apply mask on Fresh-Water flux (needed for SSH forcing).
762      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
763    o seaice: add runtime flags for turning angles (default to zero)
764    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
765      and trend from exf forcing and ctrl control adjustments
766    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
767      (since checkpoint57x_post)
768    o change the default rotation period to 86164.s = the Earth rotation
769    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
770      and based on a reference stratification. Tested within hs94.cs-32x32x5.
771    o seaice advection: add code for choosing between the default (2nd order
772      central differences) and multiDim advection schemes provided by
773      pkg/generic_advdiff
774    o seaice:
775      - removed all references to SEAICE_GRID.h fields from
776        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
777        (cubed-sphere configuration will change a little)
778      - grid computations in seaice_init are obsolete now.
779      - cleaned up code a little so that is easier to read (hopefully).
780      - added new (better?) discretizations of default advection and diffusion
781        (turn on with SEAICEuseFluxForm)
782      - replace 1 in 3d global fields by kSurface in growth.F
783      
784    checkpoint58a_post
785    o seaice:
786      - bug fix in advect.F
787    o shelfice:
788      - separate shelfice load anomaly from pload (breaks with time
789        dependent forcing), => introduce constant field shelficeLoadAnomaly.
790        Its default is 0., but it may be computed more cleverly from (unknown)
791        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
792        done offline. A good approximation of the pressure load anomaly is
793        necessary to avoid large initial adjustment processes underneath
794        deep-reaching shelfice.
795      - small fix in ISOMIP shelfice_thermodynamics
796      - add more sophisticated thermodynamics of Hellmer (1989), this is
797        now the default
798      - give a few constants more intuitive names
799    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
800      if bulk formulae are used in long integration (especially EmPmR). Turn
801      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
802      if balancePrintMean, the imbalance that is substracted is printed to
803      STDOUT.
804    o fix bug (typo) in obcs_apply_eta.F
805    o add a new package shelfice which enables us to model the circulation
806      underneath shelf-ice with draughts of hundreds of meters.
807     - works
808     - to do: + include improved thermodynamics
809              + check whether kSurfC (from model/inc/SURFACE.h) can be used
810                instead of new field kTopC
811              + can we use topoFile, Ro_surf and existing code in ini_depth.F
812                instead of new field R_shelfIce and new code in ini_depth.F
813                and ini_mask_etc.F?
814              + adjust vertical mixing schemes?
815    o seaice pkg:
816     - add a cpp-flag to include a simple formula for a salinity dependent
817       freezing point of sea water at the surface
818     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
819       meridional stresses are now different (and hopefully correct)
820    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
821       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
822       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
823    o pkg/diagnostics: add options and parameters for regional-statistics
824       diagnostics ; define regions by reading a region-mask from a file
825       (might add other options later)
826    o pkg/bulk_force:
827     - add option and parameters to use AIM surface-flux formulae.
828     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
829       others forcing fields (defined in PARM05, parameter file "data") are loaded
830       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
831     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
832     - use the right EXCH call for uwind,vwind (to work on CS-grid).
833     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
834       and parameters (note: calcWindStress replaces .NOT.readwindstress).
835     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
836    
837    checkpoint58
838    o add "--embed-source" option to genmake2 which, when the supporting
839      tools can be compiled (as determined by genmake2) will turn on the
840      embed_files package which then embeds the entire MITgcm source code
841      (*.[fFhc] + Makefile) used for the build within the executable
842      - requested by CNH but off by default
843      - adds a paltry <9MB to the mitgcmuv executable in most cases
844      - only writes the output when useEMBEDSRC in eedata is true
845    o clean up 3-dim. relaxation codes:
846      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
847      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
848      * Thanks to Tom Haine for testing!
849    
850    checkpoint57z_post
851    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
852      affects output (@ truncation level) of exp. plume_on_slope ; updated.
853    o fix the pickup behavior for obcs in combination with ptracers
854    o fix a bug in ptracers_external_fields_load
855    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
856      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
857    o transfered surface NH pressure to eta field (if exactConserv).
858    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
859         and update lab_sea output.txt file.
860    o completing 3-dim. relaxation code: additional term
861         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
862      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
863      * At compile time, in "EXF_OPTIONS.h" set
864          #define  ALLOW_CLIMTEMP_RELAXATION
865          #define  ALLOW_CLIMSALT_RELAXATION
866      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
867          tauThetaClimRelax3Dim = 15552000.0,
868          tauSaltClimRelax3Dim  = 15552000.0,
869      * 3 cases:
870          1) Use a constant-in-time 3-dim. field
871          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
872          3) Real-time relax. to time-evolving prescribed field
873    o Adding Laplacian-type smoothness constraint on
874      initial and boundary (forcing) controls (ic, bc)
875      * enable at compile-time via
876        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
877      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
878      * Absolute scale somewhat unclear so far
879      * no area weighting was included since no other cost term does so far
880    
881    checkpoint57y_post
882    First step for a NLFS adjoint
883    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
884    o new init. routines for calc_r_star, calc_surf_dr
885    o still need to deal with ini_masks_etc
886    o testreport seemed happy
887    checkpoint57y_pre
888    
889    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
890    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
891    o add new offset feature to offline pkg (plus minor cleanup)
892    o cfc fixes for final year of integration
893    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
894      be in GCHEM_OPTIONS).
895    
896    checkpoint57x_post
897    o fix testreport Pb in multiple test experiment.
898    o cleanup our namelist syntax in verification:
899      - make it more F95 standards compliant (some work still needed)
900      - allows the vast majority of our tests to work with gfortran
901    o Non-Hydrostatic:
902     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
903     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
904    o Allow to apply AB on T,S rather than on AB(gT,gS):
905     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
906     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
907       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
908     - need a "clever" read_pickup to restart from the other AB formulation
909    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
910    o remove some unused variables (reduces number of compiler warnings)
911    o adjoint
912      * Disable useVariableViscosity for adjoint for time being
913        (there are a number of extensive recomputations)
914      * Initialize certain variables needed for adjoint
915    
916    checkpoint57w_post
917    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
918                 fix the singleCpuIO RS version of MDSWRITEFIELD
919       and add a WARNING if using globalFiles=T with multi-processors.
920    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
921      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
922    o tracer advection scheme:
923      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
924       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
925       was not very convenient).
926      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
927       (further tests needed for the implicit DST & Flux-Limiter schemes).
928    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
929      and sRef for convenience, handy, when you want to initialize
930      ptracers in a large domain with a constant non-zero value. Also,
931      untangle ptracers_init.F a little.
932    
933    checkpoint57v_post
934    o change dome exp. to use variable viscosity in side-drag terms.
935    o remove all the files from the cfc_offline test since they are now
936      incorporated into tutorial_cfc_offline which has been producing
937      identical results for a few days of testing
938    o add new parameter: sideDragFactor to enable half-slip-side BC
939      and change side-drag S/R to use viscosity from mom_calc_visc
940      (can switch back by setting sideDragFactor=0.); affects results at
941      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
942       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
943    o vorticity & strain are now computed without masking, to account for
944      no-slip-side BC in variable viscosity calculation ; mask is applied
945      anyway later on, before computing advection/coriolis terms.
946    o modify exp4 to test new obcs support for reading from external files
947      and for passive tracers
948    o fix behavior of ptracers_monitor when monitor output is written to a
949      netcdf-file; still not independent of monitor.F (writes in the same
950      file).
951    o change default value of tRef (put a uniform, meaningful value for ocean
952      & atmos) and initialize sRef (was missing, as Martin mentioned).
953    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
954      to be proportional to enstrophy dissipation length.  Thus,
955       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
956      This is now consistent with Smagorinsky and with the manual.
957    
958    checkpoint57u_post
959    o OBCS and PTRACERS: add open boundary support for passive tracers
960      - either use homogenous (pseudo) v.Neumann conditions or prescribe
961        OB-values from file; this is not different from the way theta and salinity
962        are treated
963      - however, Orlanski-radiation conditions are not supported, and the model
964        will stop if you use pTracers and Orlanski at the same time.
965      - beefed up the rountine obcs_external_fields_load: now only those open
966        boundary values are overwritten with values from files for which there
967        are really files, otherwise the OB-fields remain untouched. This makes
968        it possible to use different OBs at different ends of the domain (as
969        with EXF)
970    o reduce number of exch calls in shap_filt (s2).
971    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
972      truncation level) 4/5 MLAdjust test results (11&12 digits match).
973    
974    checkpoint57t_post
975    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
976    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
977      same truncation, independent of the face number: affects affects several
978      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
979    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
980      note that biharmonic viscosity + no-slip was not tested in any experiment.
981    o fix bug in non-linear free-surf side-drag ; generate new output for
982      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
983    o make mnc honor the writeBinaryPrec flag for most kinds of output
984    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
985    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
986      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
987    o add brackets in multi-terms sum to get same truncation, independent of
988      the face number (manage to get exactly same value of gU,gV at the cs-edge)
989      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
990    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
991      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
992      a maximum grid-scale Reynolds number.  Also, changes all length calculations
993      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
994      Suggested values of viscosity parameters found in mom_calc_visc.
995      Many new viscosity diagnostics available.
996    
997    checkpoint57s_post
998    o Add clearing-house for viscosity calculations, mom_calc_visc and
999      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1000      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1001      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1002      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1003      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1004      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1005      ViscAhStrain and viscAhTension are now retired.
1006    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1007    o In response to JMC's bug report, genmake2 now ignores any soft-links
1008      that it finds in the *current* directory when searching for files.
1009      Soft-links found in any other source directories will still work as
1010      they did before.
1011    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1012      a C routine to unlimit the stack size
1013    o mnc-ify pkg/aim snapshot vars
1014    o mnc-ify pkg/land as requested by Daniel
1015    o various changes to mnc including:
1016      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1017      - output can now be grouped so that all files within a group
1018          change the ITER portion of their names in lock-step together
1019      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1020          and works with both EXCH1 and EXCH2 (but needs more testing)
1021      - writing works for all verification test cases w/ g77 on Linux
1022    
1023    checkpoint57r_post
1024    o make MNC variable initialization happen earlier
1025    o add diagnostics for (almost) each term of the momentum Eq.
1026    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1027    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1028    o remove MINIMAL_TAVE_OUTPUT option ;
1029      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1030    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1031      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1032    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1033    o add time-dependent SST, SSS control
1034    o cost terms in ecco/ modularized (new cost_generic.F)
1035    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1036    o new infrastructure for seaice model vs. obs misfits in seaice/
1037      * driver from the_main_loop.F is seaice_cost_driver.F
1038      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1039      * gradient check in Exp. 6a of natl_box_adjoint/
1040    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1041      (see README file)
1042    
1043    checkpoint57q_post
1044    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1045    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1046      - bug was reported by Jean-Michel and Ian Fenty
1047    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1048      update exp. cpl_aim+ocn output.
1049    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1050      Needed for high-res. runs with large global files
1051      to be able to limit tapelev size
1052    o Changed some tests for adjoint:
1053      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1054      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1055      * global_ocean.90x40x15/ back to default 3-level checkpointing
1056    o Modifications to enable scripted COMMON to MODULE conversion
1057      * verification/OpenAD/code/ has necessary scripts and description;
1058      * converts, compiles and runs successfully;
1059    
1060    checkpoint57p_post
1061    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1062    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1063      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1064    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1065    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1066      (was already the case for dissipation with mom_vecinv,
1067       and also the case for grad.PhiHyd when staggered-timeStep)
1068      This will allow to put dissipation out-off the AB time-stepping.
1069     Unfortunately, affects truncation error. Update output of exp. that "fails"
1070      (cg2d matching number) and leave the others for later: front_relax(10),
1071      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1072      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1073    
1074    checkpoint57o_post
1075    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1076      (2) its ready to be documented during the 20050801 DocFest
1077    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1078      for ideal_2D_oce and lab_sea on linux_ia32_g77
1079    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1080      in global1x1_tot/code_seaice_adj to access indices 32, 33
1081      (worth another tag)
1082    
1083    checkpoint57n_post
1084    o adding precip control xx_precip 32
1085    o adding swflux control xx_swflux 33
1086    o Replacing 10 forcing penalty cost routines by 1 generic.
1087    o Implementing partitioning in time-mean and variable adjustment
1088      for atmos. state.
1089    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1090    o in natl_box_adjoint:
1091      * updated exp 1 to 10
1092        (but does not have time-mean vs. variable split results yet)
1093    o updated global1x1/*_seaice_adj/
1094      to incorporate latest changes
1095    o enable useSingleCpuIO for mdsio vector routines
1096      (applies in particular to tapelev I/O)
1097    o removed inefficient K-loop in all active_file*control*.F
1098    
1099    checkpoint57m_post
1100    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1101      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1102    o pkg/exch2: filling of face-corner halo regions is optional
1103      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1104    
1105    checkpoint57l_post
1106     tag before updating tutorials (pre-release-2)
1107    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1108       for output and interpolation of input fields onto model grid)
1109    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1110       Affects results of exp. rotating_tank ; update output.txt.
1111    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1112          and taking the square quantity and/or using a fraction-weight field.
1113    o fix aim_diagnostics_init.F mate numbers.
1114    o add mnc output capability to diagnostics/diagstat and update
1115      our cvsignore files for the ACSII output generated
1116    
1117    checkpoint57k_post
1118    o lab_sea now uses diagnostics package and provides a suite of
1119      new EXF diagnostics output.
1120    
1121    checkpoint57j_post
1122    o exf
1123      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1124        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1125        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1126      * extended diagnostics output
1127        - now includes all EXF variables
1128        - hs, hl moved to common block
1129        - separate S/R for diagnostics, called after ctrl vector is added
1130        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1131        - EXFqnet contains true Qnet (i.e. includes qsw)
1132      * updated verif. lab_sea, global_with_exf
1133      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1134        to ensure that diagnostics sees a true EXFqnet
1135    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1136    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1137      several times with different frequencies.
1138    o mnc-ify the thsice package as requested by Daniel Enderton
1139      - the monitor--MNC output needs work
1140      - many attributes need to be added (most are currently blank)
1141    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1142      - many attributes need to be added (most are currently blank)
1143    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1144    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1145    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1146      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1147         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1148    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1149     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1150    
1151    checkpoint57i_post
1152    o Diagnostics package was changed: diagnostic allocation is now deactivated
1153      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1154    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1155      add 1rst Order upwind vertical Shear.
1156    o add a quick fix for A/B checkpointing in OFFLINE mode
1157    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1158      end-run around the C/Fortran linking horror in eesup/src/timers.F
1159    o added pkg/runclock: allows user to terminate run based on wall clock
1160    o added non-hydrostatic scaling parameter: nh_am2
1161    o pkg/my82: futile attempt to make results compiler-independent by adding
1162      some "_d 0", etc. no effect.
1163    o for mnc output, fill the 'T' coordinate var with myTime and create a
1164      separate 'iter' variable for iteration count
1165    o pkg/diagnostics:
1166      add new capability: output of Global/Regional & per-level statistics ;
1167      tested against monitor output (including land & thSIce) on various exp.
1168    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1169    
1170    checkpoint57h_done
1171      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1172      data.diagnostics, data.gchem, data.ptracers) is done.
1173    
1174    o pkg/diagnostics: prepare for Global/Regional statistics.
1175      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1176    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1177      and rename it: DIFFERENT_MULTIPLE
1178    
1179    checkpoint57h_post
1180    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1181    o pkg/diagnostics: change output frequency, now in seconds (instead
1182      of Nb of iterations). This requires to change data.diagnostics.
1183    checkpoint57h_pre
1184    
1185    o in mnc, let the user create the output dir if both mnc_outdir_date
1186      and mnc_outdir_num are false
1187    o add fflags() to pkg/diagnostics which allows one to specify, on a
1188      per-file basis, the file precision [default behavior is unchanged]
1189    o added diagnostics to pkg/kpp, including computation of mixed layer
1190      depth based on a temperature/density criterion
1191    o updated verification/natl_box to test the new pkg/kpp diagnostics
1192    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1193    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1194    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1195      not mnc -- this mistake was found by JMC and is now corrected
1196    
1197    checkpoint57g_post
1198    o add Adams-Bashforth 3rd Order time stepping:
1199      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1200      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1201    checkpoint57g_pre
1202    
1203    o make lambda[Theta,Salt]ClimRelax spatially varying
1204      (default remains spatially uniform constant based on tau)
1205    o added new control variables
1206      * init. uVel, vVel, etanN
1207      * lambda[Theta,Salt]ClimRelax
1208    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1209      (suggested by G. Forget)
1210    
1211    checkpoint57f_post
1212    o add parameter "baseTime" = model base time = time at iteration zero
1213      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1214      account for baseTime shift
1215    o move Coriolis arrays from PARAMS.h to GRID.h
1216    checkpoint57f_pre
1217    
1218    o mnc-ifying the seaice package
1219    o introduced an alternative length scale calculation for use in the limiting
1220      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1221    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1222    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1223      as well as grad(vort3).  Made it compatible with both approximate form
1224      for the cubed sphere and full form of these gradients.  Added flag
1225      useFullLeith to select between approximate and full form.  
1226    o add "d0" in getcon.F to reduce differences between compilers/platforms
1227      update output.txt of exp. fizhi-gridalt-hs
1228    o change port_rand funtion to allow to set the seed.
1229    o fix obscure MNC bug involving conversion between reals and integers
1230      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1231        new version is now more standards-compliant
1232    o adjoint-related modifications
1233      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1234      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1235      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1236    
1237    checkpoint57e_post
1238    o Adding eddy stress controls a la Ferreira et al.
1239    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1240    
1241    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1242      update output.txt of exp. fizhi-gridalt-hs
1243    o add more "Z" dimensions and associated coordinate vars to MNC
1244    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1245    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1246      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1247      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1248      months and years.  Requires pkg/cal.
1249    o diagnostics: add pickup functionality
1250      - off by default for backwards compatibility
1251      - current version only uses MDSIO -- MNC will be added
1252    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1253    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1254    
1255    checkpoint57d_post
1256    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1257    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1258      output from the diagnostics package
1259    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1260    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1261      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1262    o add coordinate variables to the MNC output from the diagnostics package
1263    o change MNC-flags default value: true when useMNC=TRUE
1264    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1265      the ability (off by default) to read the grid information using MNC
1266    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1267    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1268    o do snap-shot diagnostics at the middle of the time-interval (instead of
1269      at the end).
1270    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1271      new test for AIM with thSIce + slab-ocean
1272    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1273    o move state variable diagnostics to the beginning of the time step ;
1274      (note: still needs some work specially for snap-shot diagnostics)
1275      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1276    
1277    checkpoint57c_post
1278    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1279    o generate new output.txt files on faulks with g77 & the new -ieee option
1280    checkpoint57c_pre
1281    
1282    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1283      update output.txt of exp. global_ocean.90x40x15
1284    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1285      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1286    o add saltFlux(+File) forcing capability with periodicExternalForcing
1287    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1288    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1289    o improvements for the MNC output from DIAGNOSTICS:
1290      - correct handling of the unlimitied dimension
1291      - all dims now have associated coordinate variables
1292      - variables located at U, V, and Corner ("Z") points are now written
1293        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1294        *all* data points are output
1295    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1296    o added pkg/seaice/seaice_monitor.F
1297    o mdsio_readfield.F can now read files visible only to master MPI process.
1298    o pkg/seaice: some test code for ice-modified ocean stress
1299    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1300      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1301      spurious negative numbers for precipitation and humidity.  Will cause
1302      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1303    o pkg/ctrl/
1304      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1305        May be enabled via doPackDiag
1306      *  introduce z-scaling of
1307         + gradient (doZscalePack) and
1308         + control (doZscaleUnpack)
1309    o pkg/mdsio/
1310      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1311      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1312    
1313    checkpoint57b_post
1314    o simplify options in diagnostics_fill arguments (remove weird combinations)
1315    o fix MNC coordinate variables so that they now contain per-face index
1316      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1317      general, EXCH2 grids are only aligned to a "local" coordinate system
1318    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1319    o Implement instantaneous output within pkg diagnostics:
1320      setting a negative frequency in data.diagnostics produces
1321     "snap-shot" output (as opposed to time-average if freq > 0)
1322    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1323      NOTE: change ptracer diagnostics name: use 2 characters to work with
1324            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1325    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1326      becomes the coordinate variable for the 'T' dimension
1327    o add CF-style coordinate variables to MNC
1328      - just a first cut:  numbers are meaningless on the cubesphere and
1329        missing along the T axis but otherwise it works!
1330    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1331    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1332    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1333      this is based directly on what the model compute, so that the content of
1334      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1335    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1336    o clean up build options files for SunOS, in particular
1337      - remove -traditional from xmakedepend
1338      - change -xarch=v9 to -xarch=native for f77
1339      - restore use of make (not gmake)
1340      - add CC=gcc if using g77
1341    o changes per discussion of AM, JMC, & EH3 today:
1342      - move redundant "grid" variables out of "state" -- in preparation of
1343        creating proper CF-style coordinate variables and in recognition
1344        that any/all grid variables can be easily copied (eg. w/NCO) from
1345        the grid files into any of the other NetCDF files
1346      - *always* output grid variables with MDSIO (this will eventually be
1347        changed)
1348      - output MNC grid file if useMNC is true
1349    o every instance of _END_MASTER() has been found and replaced with
1350      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1351      preprocessors
1352    o re-arrange diagnostics pkg initialisation:
1353     - allow each package to extend the available diagnostics list
1354     - add some checking and fix small problems (multi-threaded, ...)
1355     - new S/R diagnostics_fill (replace fill_diagnostics):
1356       look through the short list of active diag. (instead of the long list)
1357       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1358    
1359    checkpoint57a_post
1360    o this set of changes restores TAMC compatibility
1361      tested for global_ocean.90x40x15 adjoint on trough
1362      (what a pain)
1363    
1364    checkpoint57a_pre
1365    o some modifs in tools/build_options for sunos
1366    o call ctrl_pack for ctrl at end for optimcycle=0
1367    
1368    checkpoint57
1369    o add horizontal bi-harmonic viscosity for vertical velocity
1370      - new parameter viscA4W (defaults to viscA4)
1371      - affects only non-hydrostatic code
1372      - to be done: no-slip lateral boundary conditions
1373    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1374    o implement Implicit Vertical advection for pTracers
1375    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1376      (implemented also for implicit vertical diffusion & advection)
1377    o OBCS: extend application of tracer open boundary conditions
1378      to a strip beyond the boundary of width Olx/Oly
1379    o add call monitor to TAF set of required calls (flow directives)
1380      and include in natl_box_adjoint
1381    o untangle a few ifdefs related to cost, ctrl, autodiff
1382      untangel a few ALLOW_ECCO_OPTIMIZATION
1383    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1384      (theta2, salt2 in ecco_cost_weights)
1385    
1386    checkpoint56c_post
1387    o OBCS as control variables
1388      - update ctrl_ad_diff.list, obcs_ad_diff.list
1389      - remove balance of obcs controls from default
1390      - fix index bug nobcs in ctrl_init
1391      - fix dummy fields filen in ctrl_pack
1392      - add dummy weights for obcs
1393    o lsopt: comment out fort.94 output
1394    o optim:
1395      - remove unnecessary header files
1396      - adjusted namelists
1397      - add xerbla.F to Makefile
1398    o exf:
1399      - multiple modifications of exf_check_range
1400      - unit change in exf_init_runoff from [m/year] to [m/s]
1401    o mdsio:
1402      - i/o-vector change debugLevel from debLevA to debLevB
1403    
1404    checkpoint56b_post
1405    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1406      is called from DO_THE_MODEL_IO
1407      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1408      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1409      - clean up PTRACERS_WRITE_TIMEAVE a little
1410    o add another verification experiment that tests both the cfc-pkg and
1411      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1412      reactive tendencies treated inline with regular timestepping
1413    o testreport previously did a lousy job of comparing small numbers, so
1414      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1415      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1416      testreport.
1417    o ptracers_monitor: bug fix for MPI
1418    
1419    checkpoint56a_post
1420    o GCHEM: finish reorganizating the package
1421      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1422        (introduces another 3D-array for each passive tracer, but only if
1423        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1424        gchemTendency is not needed because the timestep is done separately)
1425      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1426      - GCHEM is now---more or less cleanly---separate from PTRACERS
1427      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1428        so clear to me how that should be done in a general way.
1429    o CFC: improve formatting of output in CFC_ATMOS
1430    o PTRACERS:
1431      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1432        that ALL experiments with ptracers enable can be checked. This makes
1433        GCHEM_MONITOR obsolete.
1434      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1435        monitorFreq
1436      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1437    o add PTRACERS (PTR0[1-5]) to testreport output
1438    o exf_check_range:
1439      * default changed to .TRUE.
1440      * will check values for niter0 if debLevA, every timestep if debLevB
1441      * STOP in exf_check_range if 'out of range'
1442      * range chosen generous to allow for potential extema
1443      TBD: a version with stricter range
1444           permitted range would be runtime parameters
1445    o GMredi:
1446      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1447      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1448      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1449    o GCHEM:
1450      - move call to GCHEM_FORCING_SEP, so that it is now called before
1451        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1452      - introduced a useGCHEM runtime flag and applied it everywhere.
1453      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1454        this flag is now only visible within GCHEM-pkg routines.
1455      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1456        be replaced by a 3D array that is computed before thermodynamics; for
1457        this, the tracer ID iTracer had to be included into the parameter list
1458        of ptracers_forcing
1459      - set up forward_step to call gchem_forcing, that will replace
1460        gchem_forcing_int in ptracers_forcing
1461      - cleaning up
1462    o small cleaning of exch2: remove files that are also in eesupp/src
1463    
1464    checkpoint56
1465    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1466    o mnc: cleanup "full" files--fixes out-of-memory problem
1467    o ECCO-GODAE
1468      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1469      * fully merged and updated from SIO code
1470        windstress sign change affects
1471        - exf_inscal_[u/v]stress
1472        - sign of xx_tau[u/v] adjustments
1473        - signs in cost_scat
1474      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1475      * natl_box_adjoint updated and compressed
1476      * 2-level checkpoint switch added
1477        (tested in EXP. 1 of natl_box_adjoint)
1478      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1479    o SVD
1480      * first complete, non-hacked version for SVD calculations
1481      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1482        performed via direct access files admtlm_vector.it????
1483        (via ctrl_[un]pack)
1484      * optimcycle is used for ARPACK iteration counter
1485        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1486      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1487        and add linear transforms where necessary
1488      * controls are initial/final SST, SSS (can be extended; need to check
1489        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1490    o mdsio: filename info to both stderr, stdout
1491    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1492      from sign change
1493    
1494    checkpoint55j_post
1495    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1496      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1497    o add consistent build directories and .cvsignore files to verification
1498    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1499    o make all subroutines 30 or less characters in length for certain older
1500      compilers to work (a thorough search only turns up two routines in
1501      pkg/ptracers)
1502    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1503      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1504    
1505    checkpoint55i_post
1506    o change arrays for total vertical diffusivity (2.D if explicit,
1507      3.D if implicit) ; each ptracer uses its own background value.
1508    o added mnc/NetCDF output capability to ocn_compon_interf
1509      - added bits to verification/cpl_aim+ocn so that it can run on
1510        ITRDA and other clusters without the mpirun "-wd" option
1511    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1512      configuration
1513    o give MNC the ability to create additional files rather than
1514      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1515      - the default is just less than 2GB which is a practical limit
1516        on many systems
1517    o Compute the non-local term using either KPP vertical diffusivity (=default)
1518       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1519    
1520    checkpoint55h_post
1521    o add verification test "vermix"
1522    o remove all the *_ioinc flags and replace with the single global
1523      outputTypesInclusive flag
1524    o allow to set a vertical profile of vertical diffusivity for T & S
1525    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1526    o useMNC moved from data.mnc to data.pkg
1527    
1528    checkpoint55g_post
1529    o Renaming carbon AD experiments to comply with testreport conventions
1530    o Updating adjoint of Held-Suarez hs94.1x64x5
1531    o Fixing directives for non-ECCO forward_step, after ECCO directives
1532      have been fixed to avoid recomp. of do_oceanic_phys
1533      Works well for global_ocean.90x40x15,
1534      but recomp. issue remains for carbon
1535    o Updating adjoint output for natl_box_adjoint after
1536      pkg/ecco has been modified (see taga c55d_post)
1537    
1538    checkpoint55f_post
1539    o rename to timeave_init_fixed
1540    
1541    checkpoint55e_post
1542    o some delicate re-shuffle of store directives to avoid one
1543      extra call of do_oceanic_physics
1544      affects ecco_the_main_loop.F, do_oceanic_physics.F
1545      checkpoint_lev1_directives.h
1546    o NB: this may break global_ocean adjoint temporarily,
1547      but it is clear how to fix it. Will do later, need this now.
1548    
1549    checkpoint55d_post
1550    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1551    o ecco_cost_weights is modified to 1x1 runs
1552    o modifs to allow observations to be read in as
1553      single file or yearly files
1554    o enable to read exf forcing fields as either
1555      single file or yearly files (flag useExfYearlyFields)
1556    checkpoint55d_pre
1557    
1558    o switch between 2-level and 3-level checkpointing
1559    o add ability of MNC to write local and "partial" (eg. 2D slices where
1560      the full 3D field is never actually stored) arrays to NetCDF files
1561      with the correct (that is, the complete multi-dimensional) set of
1562      array indicies
1563      - used in mom_vecinv() to write the diagFreq output
1564      - tested (demonstrated) in verification/aim.5l_cs
1565    o further mnc-ification
1566      - add verification/lab_sea to the list with mnc setups
1567      - fix undefined mnc v-names in cd_code
1568      - add kpp to mnc output (both snapshot and timeave)
1569    o non-hydrostatic code
1570      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1571        in calc_gw.F
1572      - defaults to viscAh
1573      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1574        friction or Leith) in non-hydrostatic mode, as long as there is
1575        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1576    o pkg/cost
1577      extend simple cost functions to treat time mean quantities
1578      (T,U,V) via cost_accumulate_state from cost_tile
1579    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1580        be 2 times larger than the minimum size the advection scheme requires.
1581        now get a perfect conservation of salt in advect_cs test-exp (updated)
1582    o GGL90 (Gaspar's TKE mixed layer)
1583      - add horizontal diffusion of TKE, requires exchanges in
1584        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1585        default. In OPA there is no horizontal diffusion of TKE but the
1586        mixing coefficients are computed from a horizontal average of TKE of
1587        6 points or so. I think that diffusion has a little more physical
1588        justification.
1589      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1590        was in vain)
1591      - mask tke-variable in ggl90_init
1592    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1593    o fix biharmonic diffusion on CS-grid.
1594    o more obcs stuff
1595      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1596        for reading boundary values. This routine is called from
1597        obcs_prescribe_read
1598      - updated obcs_check
1599      - changed sponge layer relaxation parameter units for days to seconds
1600      - turned off sponge layer by default
1601      - changed argument list of OBCS_CALC to myTime+deltaTclock
1602      - fixed about 35 bugs in obcs_external_fields_load
1603    
1604    checkpoint55c_post
1605    o obcs stuff
1606      - new runtime flags useOBCSprescribe, useOBCSbalance
1607      - re-arranged obcs_calc
1608      - moved exf_getobcs to obcs_prescibe_read
1609        obcs_prescibe_read is called after ORLANSKI stuff
1610        and independent of it (executable can contain all).
1611      - updated obcs_check
1612      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1613        These may be necessary only if tangential velocities are
1614        prescribed at OB, not sure, needs testing.
1615    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1616      which simplifies the calls and passes the ifc check-bounds test
1617    
1618    checkpoint55b_post
1619    o add a 2D scalar, Z location, exchange_2 routine.
1620    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1621      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1622      affects advect_cs results (for the wrong reason): update output.txt
1623    o use a more standard discretization for biharmonic viscosity ;
1624     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1625      affects results of dome set-up: update output.txt
1626    o fix gad_advection.F (CubedSphere part), back to version 1.23
1627    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1628    
1629    checkpoint55a_post
1630    o merged code to
1631      * prescribe/read time-dependent open boundaries
1632        (works in conjunction with exf, cal)
1633      * sponge layer code for open boundaries
1634      * each boundary N/S/E/W now has its own CPP option
1635        (healthy for the adjoint)
1636    
1637    checkpoint55
1638    o up-to-date adjoint of previous breaks
1639      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1640      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1641      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1642      - carbon: * remove tr1-related adjoint verification
1643                * add ptracer as control variable
1644    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1645      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1646    
1647    checkpoint54f_post
1648    o in verification/carbin/ remove experiment related to
1649      ALLOW_PASSIVE_TRACER (array tr1 etc)
1650      code_ad/ input_ad/ results_ad
1651    
1652    o add two new packages
1653      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1654        + subject to optimization (memory)
1655      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1656        + subject to reordering (many GOTOs in the original code)
1657        + so far opps is called for every (i,j) point, and then operates in
1658          the vertical; one may want to reorder the scheme in order operate in
1659          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1660          fields)
1661    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1662      - all verification tests compile and run with linux_ia32_g77
1663      - defaults are compatible with current input files--nothing
1664        should change if you were not previously using MNC
1665      - MNC output has been added in numerous places (eg. timeave)
1666        but there are still a few writes not yet do-able with MNC
1667        (this is in progress)
1668      - flags now allow for either/or/both use of MDSIO and MNC and
1669        documentation will soon follow
1670      - numerous small formatting cleanups for ProTeX
1671    o add version info (via BUILD_INFO.h) to MNC and stdout
1672    
1673    checkpoint54e_post
1674    o add two new packages
1675      - pp81 (Packanowski and Philander, 1981), Richardson number and
1676        stratification dependent mixing
1677      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1678      - these scheme operate in a similar manner as KPP (without ghat, of
1679        course), however there is only one diffusivity that is used for both
1680        temperature and salinity (and passive tracers)ç
1681    o add offline package
1682    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1683      provided by Stephanie Dutkiewicz
1684    o genmake2: add ability to search for C compilers and cleanup test output
1685      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1686    
1687    checkpoint54d_post
1688    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1689    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1690      leading to additional shift by 5 days each year of integration
1691       (i.e. leading to considerable offset over the years)
1692    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1693    o start with no AB and no initial filtering (staggerTimeStep):
1694      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1695    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1696      (external loading & cpl import/export stay in forward_step.F)
1697    o update coupling interface to work with new staggerTimeStep
1698    o change MDSIO ptracers_pickup.
1699    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1700    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1701    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1702    
1703    checkpoint54c_post
1704    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1705      this affects (truncation error) output.txt of test-exp:
1706       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1707    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1708    o change Qnet to always be the net heat flux, (+upward).
1709      affects (truncation error) output of natl_box exp.: updated
1710    o define the max number of passive tracers in PTRACERS_SIZE.h
1711    o start to test mnc routinely in exp0
1712    o add sea-ice loading (sIceLoad) as a new forcing field.
1713    
1714    checkpoint54b_post
1715    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1716       impressive on Altix and Opteron systems)
1717    o diagnostics can now write NetCDF files through the mnc package
1718    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1719    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1720    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1721      affects (truncation error) output of lab_sea & natl_box exp.: updated
1722    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1723    
1724    checkpoint54a_post
1725    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1726    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1727    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1728    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1729      + internal_wave (shift in writing cg2d_ini_res)
1730    checkpoint54a_pre
1731    
1732    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1733      - modified verification/lab_sea and natl_box_adjoint accordingly
1734    
1735    checkpoint54
1736    checkpoint53g_post
1737    o prepare splitting of thermodynamics: store convect.counter in common block
1738    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1739      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1740    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1741    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1742    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1743    o restore adjointability
1744    
1745    checkpoint53f_post
1746    o modifications that affect AIM experiment results (update output.txt):
1747      - no advection of S at top interface Nr (pkg/generic_advdiff)
1748      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1749    o AIM pkg:
1750      - include stability function into surf.Flux derivative relative to Tsurf
1751      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1752    
1753    checkpoint53e_post
1754    o merged cylindrical coord configuration
1755    o added rotating_tank experiment
1756    checkpoint53e_pre
1757    
1758    checkpoint53d_post
1759    o faulks upgraded: re-generate output.txt that have changed:
1760       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1761    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1762    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1763    o added Sadourny discretization of Coriolis
1764      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1765      - re-enabled use of omega3 (useAbsVorticity)
1766    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1767      vector-invariant equations
1768      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1769    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1770      hopefully without new bugs
1771      - still to do: biharmonic friction for non-hydrostatic w
1772    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1773    o regenerated output for global_ocean_ebm (using -ieee)
1774    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1775      of mom_common/
1776      - simple re-arrangement of instructions within computing loop
1777    checkpoint53d_pre
1778    
1779    checkpoint53c_post
1780    o new version of coupler for AIM+thSIce and Ocean models
1781     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1782     - land: change Evaporation of snow
1783     - aim with thSIce: fix bug in snow-precip.
1784    o changes to calc_gw.F
1785     - bug fix for w^2 term near the bottom boundary
1786     - (hopefully) improve the lateral slip boundary condtions for use with
1787        partial/looped cells
1788      - because the bug fix changes two verification experiments anyway (exp5
1789        and plume on slope), change the lateral boundary condition from half slip
1790        to the value of no_slip_sides
1791    o ebm package wasnt quite up to the parallel task. Fixed that.
1792    o Adjoint of EBM package + verification
1793      * TLM OK
1794      * ADM not sufficient accuracy yet (needs further testing)
1795    
1796    checkpoint53b_post
1797    o Commiting new energy balance model to repository
1798      * package is pkg/ebm
1799      * verif. is verification/global_ocean_ebm
1800      * references are in ebm_driver.F
1801    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1802    C        Global thermohaline circulation. Part I:
1803    C        Sensitivity to atmospheric moisture transport.
1804    C        J. Climate 12(1), 71-82
1805    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1806    C        Global thermohaline circulation. Part II:
1807    C        Sensitivity with interactive transport.
1808    C        J. Climate 12(1), 83-91
1809    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1810    C        Destabilization of the thermohaline circulation
1811    C        by atmospheric eddy transports.
1812    C        J. Climate 7(12), 1870-1882
1813    o Will need long integration testing.
1814    checkpoint53b_pre
1815    
1816    o created pkg/mom_common in preparation for variable viscosity code
1817    o renamed and split ini_mnc_io
1818    o pkg/land: only liquid water can diffuse or run-off
1819    o AIM using land: soil wetness availability account for snow
1820    o added printMapIncludesZeros to EEPARMS namelist
1821    
1822    checkpoint53a_post
1823    o restore TAMC compatiility for exf_constants.h
1824      (no usage of _d in .h)
1825    o Additional storing in KPP in an attempt to fix
1826      TAMC problem with adjoint of KPP code.
1827      (no success...)
1828      Identical code works fine with TAF.
1829    o Fixed verification/natl_box_adjoint experiments.
1830      Initial conditions for Experiments 4 and 5 are now
1831      set to "SEAICE_initialHEFF=0", which is more reasonable,
1832      and hence gives results closer to that of Experiment 2.
1833      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1834    
1835    checkpoint53
1836    o stable checkpoint with up to date adjoint
1837      TLM tests only run for 1st grdchk at the moment. Its unclear if
1838      this is a code problem or a problem with resetting code for g_
1839      variables that is being autogenerated wrong.
1840      Otherwise:
1841       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1842       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1843         are both still in chaos following their security messes.
1844    
1845    checkpoint52n_post
1846    o various build (mostly genmake2) changes including:
1847      - ability to build/run more easily within Cygwin and MacOS X
1848      - more complicated Makefiles with a stronger dependence on Gnu Make
1849    o pkg/seaice modifications
1850      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1851        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1852        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1853      - changed proxy for geostrophic velocity and updated
1854        verification/lab_sea/results/* accordingly
1855      - removed ADI dynamic solver from pkg/seaice
1856      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1857        they caused a segmentation fault under certain circumstances
1858      - removed unused field WATR
1859    o bug fix in exf-package:
1860      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1861         now reflect that.
1862    o small fixes in the cal-package:
1863      - set reference date to first of January for the 'model'-calendar
1864      - failing of cal_CheckDate in cal_FullDate now actually results in a
1865        warning
1866    o small modifications in exf-package to increase flexibility:
1867      - change climtempfreeze from a constant to a runtime parameter that
1868        is specified in data.exf_clim (default = -1.9)
1869      - introduce runtime parameter windstressmax (default = 2.0) that is
1870        specified in data.exf
1871    o fix in pkg/thsice:
1872      - update Evap (Tsf changes) to be consistent with Latent heat flux
1873      - maintain snow precipitation unchanged (even if Tsf >=0).
1874     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1875    
1876    checkpoint52m_post
1877    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1878      this does not change any of the results, because myIter=0 in swfrac always
1879      lead to jwtype=2 (the default anyway), but the call makes little sense
1880      as a default
1881    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1882    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1883      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1884    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1885    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1886    o extending useSingleCpuIO option to work with new exch2 I/O format
1887      - old-style, missing-tile I/O is still accessible by defining CPP
1888        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1889    o monitor package can write to NetCDF files and/or STDOUT
1890    o fix re-definition bug in MNC_GRID_INIT_ALL()
1891    o doc/api_reference added
1892      - a framework for building an API Reference Manual using all
1893        the "protex" comments embedded in the code
1894      - see pkg/generic_advdiff, pkg/mnc for examples
1895    o MNC:
1896      - make myThid the last argument for all subroutines
1897      - new default for the grid files: NO halos
1898      - add useMNC and other run-time flags
1899      - separate per-file-group handling of the unlimited dimension
1900      - early initialization of MNC w/ flags read at the eeboot stage
1901        and lookup tables set in initialize_fixed
1902      - write all MNC output to a freshly-created directory
1903    o thermodynamics sea-ice (thsice) is now tested with testreport.
1904    o test exp. advect_cs: use the standard cs32 grid ; update output.
1905    o Added functionality to grdchk:
1906      pick global i,j,k position (or nearest wet) where to perform check.
1907    
1908    checkpoint52l_post
1909    o new land formulation:
1910      a) use ground enthalpy as prognostic variable to ensure exact
1911         energy conservation.
1912      b) account for water temperature and for latent heat of freezing
1913         in all processes (rain, run-off, ground storage)
1914      c) compute surface and ground temperature implicitly.
1915    o aim_v23 modification for new land model:
1916      a) Treat separately land / ocean / sea-ice surface fluxes
1917         to allow implicit computation of land & sea-ice surface temp.
1918      b) add snow precipitation.
1919    checkpoint52l_pre
1920    
1921    o fix problem (when 1 tile is empty) in min/max monitor.
1922    o fix bug in timeAve (u,vZetatave in common block)
1923    o no restoring terms under ice for pkg/seaice
1924    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1925    o bug fix for pkg/seaice pickups
1926    o change MNC call locations and add coordinate attributes
1927    o mask vorticity at the corner ; affects global_ocean.cs output
1928    o fix ini_curvilinear_grid ; test CS experiments with mpi
1929    o aim.5l_cs: modify sea-ice fraction input file ; update output
1930    o exf: Adding simple range check routine for exf fields after read
1931    
1932    checkpoint52k_post
1933    o removed top-level directory "diags"
1934      - we migrated these functions to pkg/timeave a long time ago
1935    o fixed bug introduced in pkg/monitor
1936    o accuracy ctrlprec = 32 insuffient for gradient checks using
1937      averaged fields (I/O via cost_averages)
1938      -> use ctrl.h in active_file*.F to control I/O precision.
1939    o paramter list of CALL ADTHE_MAIN_LOOP
1940    o added initial do_the_model_io to ecco
1941    o set all ...Freq to zero after cost_final
1942      taveFreq, dumpFreq, pChkptFreq
1943    o MAIN and ECCO differentiability restored
1944    
1945    checkpoint52j_post
1946    o fix nchklev in tamc.h for global_ocean...
1947    o Bringing flow and store directives up-to-date
1948    o Really weird thing!
1949      call do_the_model_io from the_main_loop with parameters
1950      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1951      TAF places a faulty re-call of initialise_varia
1952      after cost_final call which should not be there!
1953    checkpoint52j_pre
1954    
1955    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1956      error messages
1957    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1958    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1959      debug output
1960    o modfied mdsio_writefield.F to handle non-global files under exch2
1961    o update AIM Cubed-Sphere exp (aim.5l_cs):
1962      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1963    o update AIM Equatorial Channel exp:
1964      use standard aim_v23 pkg and change the SST fields to be more realistic.
1965    o globalFile now works with exch2
1966    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1967      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1968    o limit timeave output for hi-res integrations
1969    
1970    checkpoint52i_post
1971    o removed CPP_EEOPTIONS.h from verification/*/code
1972    o updated the tiling for global_ocean_pressure
1973    checkpoint52i_pre
1974    
1975    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1976      the old pkg/aim).
1977    
1978    checkpoint52h_pre
1979    o shortened offending lines in exch2_send_rx?.template
1980    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1981    o genmake2: add build & execute test for NetCDF code
1982    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1983      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1984    o added useSingleCPUIO flag to monitor.F and mon_out.F
1985    o added temporary hack for sea-ice dynamics on the cube:
1986      metric terms are ignored and it is assumed that
1987      there is no sea-ice on cube faces 1, 2, 4, and 5.
1988    
1989    checkpoint52f_post
1990    o added exch2 cube routines to pkg/exch2
1991    o modified hs94.cs-32x32x5 to use it
1992    o added new grid files to hs94.cs-32x32x5
1993    checkpoint52f_pre
1994    
1995    checkpoint52e_post
1996    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1997      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1998    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1999      to work with implicit vertical advection and AB ;
2000    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2001    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2002     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2003    checkpoint52e_pre
2004    
2005    o fix bug in impldiff when Nr=1 or Nr=2.
2006    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2007    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2008    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2009      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2010    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2011    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2012    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2013    
2014    checkpoint52d_post
2015    o re-tiled many expts to allow comparison in multi-processor mode
2016      - updated output accordingly
2017      - changed hs94.128x64x5 to use intial T from file rather than use the
2018        random number generator
2019    o add infrastructure in model routines for fizhi and gridalt packages
2020    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2021    o changes to permit hi-res, cubed-sphere, configuration
2022      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2023      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2024      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2025        of surface winds for the cube
2026      (A verification experiment, based on global_ocean.cs32x15, but with
2027       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2028       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2029       complete with example surface forcing files and matlab scripts to look
2030       at the output and compare it with that of global_ocean.cs32x15.)
2031    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2032       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2033       to conform to the common rule.
2034    o check-in the first version of the coupler + interfaces for multi-components
2035       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2036       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2037       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2038       - ocean and atmos. share the same horizontal grid (no interpolation).
2039       - exchanges between component and coupler is done in forward_step
2040    o new verification experiment, cpl_aim+ocn:
2041       coupled ocean - AIM atmosphere on cs32 grid.
2042    
2043    checkpoint52d_pre
2044    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2045    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2046    
2047    checkpoint52c_post
2048    o Fixing OPTIONS files for use of exf:
2049      - ALLOW_ECCO not needed
2050      - ECCO_CPPOPTIONS.h should not be included from
2051        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2052        as has been the case in the past
2053      - All cal/exf related options are currently set in
2054        single header file. Should remain so until we
2055        agree on a consistent new policy.
2056    o Removed all CPP options for cal package.
2057      cal has no more CPP options.
2058    o modified STOREs in GAD_ADVECTION
2059    o corrected key comp. for passkey
2060    
2061    checkpoint52b_post
2062    o new version: "thsice" of thermodynamic sea-ice pkg:
2063     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2064     - modify fluxes but do not change theta directly;
2065     - light cleaning of bulk_force pkg (still needed with thsice).
2066     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2067       + output_thsice.txt to test thsice & bulk_force pkgs.
2068    o put back grid & coriolis monitor output.
2069    checkpoint52b_pre
2070    
2071    o call "do_the_model_io" at the beginning (=> dump initial state)
2072    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2073    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2074      (need info on NUMBER_OF_PTRACERS)
2075    o missing PTRACERS headers in some routines
2076    o default tamc.h in pkg/autodiff supposed to crash
2077      to ensure proper customization
2078    
2079    checkpoint52a_post
2080    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2081      - moved surfaceTendencyTice from pkg/seaice to main code
2082      - subroutine FREEZE_SURFACE now limits only surface temperature
2083        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2084        => new output.txt for global_ocean.cs32x15 & global_with_exf
2085      - keep the old version of FREEZE for backward compatibility;
2086        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2087      - corresponding modifs for TAF directives
2088    o added surface flux output variables to TIMEAVE_STATVARS
2089    o time-averaged output for pkg/ptracers
2090    o fix problem with ECCO-related divided adjoint
2091      snapshot file was missing some ad-variables,
2092      but no warning issued by TAF
2093    
2094    checkpoint52a_pre
2095    o some bug fixes for #undef REAL4_IS_SLOW
2096    
2097    checkpoint52 = ecco_c52_e35
2098    o after testing adjoints of checkpoint51u_post
2099    
2100    checkpoint51u_post
2101    o this is the post-merge tag of the ecco-branch
2102      (needs another clean checkout and re-testing)
2103    o various natl_box_adjoint configs and results
2104      but no input fields
2105    o obcs adjoint not yet merged!
2106    o adding ECCO global 1x1 and 2x2 degree configs
2107    o updated/extended some store directives for seaice
2108    o pkg/ecco now containes ecco-specific part of cost function
2109    o top level routines the_main_loop, forward_step
2110      supersede those in model/src/
2111      previous input data.cost now in data.ecco
2112      (new namelist ecco_cost_nml)
2113    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2114    
2115    checkpoint51t_post
2116    o this is the pre-merge tag of the ecco-branch
2117    
2118    checkpoint51s_post
2119    o cleanup: removed various obsolete #define-s
2120    o pkg/grdchk
2121      - renamed 'ph-grd 3' to 'grad-res'
2122      - merged from ecco-branch
2123        (remaining bug fixes for obcs gradient checks)
2124      - additional high-precision output for testreport
2125        (grep for 'precision_grdchk_result')
2126    
2127    checkpoint51r_post
2128    o cleaned up or removed CPP_OPTIONS.h files
2129    o updated results for some of the tests to reflect the new
2130      optfiles (-ieee: -O0 instead of -O3)
2131    
2132    checkpoint51q_post
2133    o cd_code:
2134      - moved cd_scheme.F -> cd_code_scheme.F
2135      - separate read_checkpoint from cd_code_ini_vars.F
2136      - separated cd_code part from write_checkpoint
2137      - updated AD_SOURCE, generated .flow
2138      - added CD_CODE_VARS.h to the_main_loop
2139      - Moving cd_code specific store dir.s to pkg/cd_code
2140    o ctrl package totally restructured
2141      - pack/unpack now optional and decoupled from
2142        xx_/adxx_ I/O
2143      - ctrl_pack/unpack cleaned
2144        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2145      - confined inclusion of AD_CONFIG.h to where necessary.
2146    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2147    
2148    checkpoint51p_post
2149    o create initial cd_code package
2150      - WARNING: the initialization of fields within packages
2151        is broken because INI_FIELDS (where READ_CHECKPOINT is
2152        called) is called *before* PACKAGES_INIT_VARIABLES.
2153        This seems to be backwards since
2154        1) its important to initially zero the entire field including
2155           the "halo" region
2156        2) zeroing needs to be done *before* reading pickup info
2157           and the pickup call might or might not happen in any
2158           particular run
2159      - this needs an overhaul for R2
2160    o cleanup verification/*/code/GMREDI_OPTIONS.h
2161    o cleanup testreport
2162    
2163    checkpoint51o_post
2164    o bringing AD-related verif's up to date with genmake2
2165      - carbon/
2166      - global_ocean.90x40x15/
2167      - hs.94.1x64x5/
2168      - (front_relax/ )
2169    o (more) consistent directory structure for AD-related verif.'s
2170    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2171    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2172    o bug fix in find_alpha.F for MDJWF:
2173      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2174        change rho -> rho-rhoConst
2175      - replace call find_rho to find_rhonum
2176    o initialisation of rFlx extended to full array (required by TAF)
2177      and shifted to thermodynamics
2178    o removed PTRACERS.h in ptracers routine
2179    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2180    o Correcting initialisations for fVerU, fVerV.
2181    o helping TAF to recognize dependency on kUp for
2182      fVerU, fVerV
2183    o Replacing delZ by delR in pkg/ctrl/
2184    checkpoint51o_pre
2185    
2186    o undid all of cp51 pending some cleanups and discussion
2187    o added the [#include "AD_CONFIG.h"] statement to all files that need
2188       it for adjoint/tl #defines
2189     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2190     o removed tools/genmake since it no longer works
2191    
2192    checkpoint51n_post
2193    o modifications to make FREEZE flux visible to pkg/kpp
2194      - moved surfaceTendencyTice from pkg/seaice to main code
2195      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2196      - subroutine FREEZE now limits only surface temperature
2197        (this means new output.txt for global_ocean.90x40x15,
2198         global_ocean.cs32x15, and global_with_exf)
2199    o added surface flux output variables to TIMEAVE_STATVARS
2200    
2201    checkpoint51n_pre
2202    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2203    o added [#include "AD_CONFIG.h"] to all files that use the following
2204      defines:
2205      - ALLOW_ADJOINT_RUN
2206      - ALLOW_TANGENTLINEAR_RUN
2207      - ALLOW_ECCO_OPTIMIZATION
2208    
2209    checkpoint51m_post
2210    o incorporating changes to get TAMC/TAF working in genmake2
2211      - added new TAMC/TAF targets to the Makefile
2212      - various cleanups related to package handling
2213      - these changes should have no impact on the forward model
2214    
2215    checkpoint51l_post
2216    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2217     - faster algorithm for cal_addtime.F
2218     - higher precision arithmetic, where needed
2219     - pkg/exf *startdate variables changed from calendar date to
2220       model integration time
2221    
2222    checkpoint51l_pre
2223    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2224    o enable to apply restoring on S & T only in a latitude band.
2225    o update output (external_forcing_surf modif. change truncation errors)
2226       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2227    
2228    checkpoint51k_post
2229    o change default to: useNHMTerms=.FALSE.
2230     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2231       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2232     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2233        exp1, ideal_2D_oce
2234     - change data file of oceanic exp (leave the results unchanged for now)
2235       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2236    o set gravitySign automatically according to the vertical coordinate used
2237      (and change sign: back to "logical" value: +1 when R increases downward)
2238    o added an include barrier to the default CPP_OPTIONS.h and
2239      removed the #include "PACKAGES_CONFIG.h" from it
2240    o fix a bug in mom_fluxform (from chk51j_post)
2241    
2242    checkpoint51j_post
2243    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2244    o adjusted some flow directives (dynamics, thermodynamics)
2245    o added cubed-sphere case to test cost function
2246    o heckpoint_lev?_directives.h now include
2247      pkg-specific directives, whenever those are enabled.
2248    o Moving pkg-specific flow directives to corresponding pkg
2249      Moving pkg-specific differentiation list to corresponding pkg
2250      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2251      ---> conventions are
2252           - pkg_ad.flow
2253           - pkg_ad_diff.list
2254           - pkg_ad_check_lev?_dir.h
2255    
2256    checkpoint51i_post
2257    o merge of the branch-genmake2
2258      - knowingly breaks the older genmake
2259      - automatic generation of all ALLOW_${PKG_NAME} defines
2260      - new testreport supersedes older testscript
2261    o large number of package inclusion and header cleanups
2262    checkpoint51i_pre
2263    
2264    o new output for adjoin of global ocean vector invariant
2265    o fix for checkpoint of thermodynamic seaice and bulk_force
2266    o Steph gchem various cleanups
2267    
2268    checkpoint 51h_pre
2269    o fixed some single quotes
2270    o modify gchem pkg to be more versatile
2271    o modifications to clean up dic pkg
2272    o add pkg/cfc
2273    
2274    checkpoint51g_post
2275    o provide links for ARPACK and ADM*TLM
2276    o start removing verification/vero/
2277    o update AD-related stuff
2278      (in particular some IF-statements in model/src/ routines)
2279    o adding to verification/global_ocean.90x40x15/ adjoint of
2280      vector invariant setup
2281    
2282    checkpoint51f_post
2283    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2284    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2285      of tracer Green's fucntions for ocean inversion project.
2286    
2287    checkpoint51f_pre
2288    o Added on-the-fly spatial interpolation capability
2289        "USE_EXF_INTERPOLATION" to pkg/exf.
2290      - This is a temporary Cartesian-grid hack until
2291        the super-duper ESMF coupler becomes available.
2292      - See verification/global_with_exf/README for usage example.
2293      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2294        flags and modified pkg/seaice accordingly.
2295    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2296        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2297        non-local transport term.
2298    
2299    checkpoint51e_post
2300    o pkg/mom_vecinv:
2301      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2302      - add time-ave diagnostic of vorticity advection.
2303    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2304    o atmospheric geopotential: - include water vapor effect;
2305                                - use p^kappa in p* scaling.
2306    o land pkg: read initial state from files.
2307    o AIM : add stratospheric drag in the upper level
2308    
2309    checkpoint51d_post
2310    o change function ILNBLNK (=> last non-blank char.) to return zero
2311      (instead of the string length) when the string. char is empty
2312    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2313    o modif's to restore TAMC compatibility
2314      - avoid "_d" constructs in PARAMETER declarations
2315      - avoid interrupting lines by comment lines
2316    o Use cluster local disks for purely local I/O
2317      vs. globally visible disks needed for ctrl stuff
2318      (merged from ecco-branch)
2319      - new active_file_loc... and mdsio_..._loc routines
2320      - affected packages: autodiff, ctrl, grdchk, mdsio
2321    
2322    checkpoint51c_post
2323    o introducing integer flag debugLevel
2324      - debLevZero: suppress all output
2325      - debLevA: standard
2326      - debLevB: equivalent to current debugMode=.TRUE.
2327    o introducing pathname variable mdsioLocalDir for mdsio
2328      that can be specified at runtime
2329      (relevant for cluster I/O to local disk)
2330    `
2331    >>>checkpoint51b_post
2332    adjoint of ptracers
2333    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2334    o extended state in checkpoint_lev?, etc.
2335    o alternative ctrl/cost with tr1 or ptracer
2336    o new comlev1_bibj_ptracers
2337    o new ptracers.flow
2338    o made ptracers_forcing same as external_forcing_s
2339    o added verification for adjoint with ptracers
2340      - adm. grdchk fail so far
2341      - tlm. grdchk OK
2342      - checked tapelev/comlev recomputations: OK
2343    <<<checkpoint51b_pre
2344    
2345    checkpoint51a_post
2346    o added code for biogeochemistry package
2347      - new pkgs: dic, gchem
2348      - new subroutine in ptracers
2349    o modify code for biogeo packages
2350      - in model/src and pkg/ptracers
2351    
2352    checkpoint51
2353    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2354      - autodiff, ctrl, exf, grdchk, seaice
2355      kept separate packages
2356      - cost, ecco, obcs
2357    o updating verification/internal_wave, verification/lab_sea
2358      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2359    
2360    checkpoint50i_post
2361    o Preparing next differentiable checkpoint and sync
2362      of MAIN vs. ecco-branch
2363      - 1st step: this one is differentiable
2364      - 2nd step: next(! not this) checkpoint will have updated packages
2365                  from ecco-branch)
2366    
2367    checkpoint50h_post
2368    o new package "land": provide surface BC for AIM.
2369    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2370    o AIM: use true log-P extrapolation for near surface temp (= as in
2371        F.Molteni paper) ; update aim.5l_cs output.
2372    o New variable in PARM03 for more flexible pickups
2373    o somewhat cleaned package initialisation sequence for
2374      ctrl/ cost/ ecco/ in packages_... routines
2375    
2376    checkpoint50g_post
2377    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2378      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2379      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2380        made the default because of faster convergence than ADI
2381    
2382    checkpoint50f_post
2383    o exf totally restructured
2384      - replaced all exf_set_ routines by one generic exf_set_gen.F
2385        and made sure it's still differentiable
2386      - split exf_getffields.F into new exf_bulkformulae.F
2387      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2388      - updated adjoint/makefile and relevant verif. accordingly
2389    
2390    checkpoint50f_pre
2391     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2392          + change Evap over land. (update aim.5l_cs output)
2393     o added missing .cvsignores and made uniform across expts
2394     o changed configuration of tidal_basin_2d expt
2395     o added pkg/debug functions for tracing code in fatal crashes
2396     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2397     o new fn in pkg/monitor to stop model if solution grows too big
2398     o removed lots of single quotes from comments
2399    
2400    checkpoint50e_post
2401    o make KPP work with PTRACERS
2402     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2403       nearly a copy of kpp_transport_s
2404     - there is no analogue to SurfaceTendencyS, so I have to use
2405       gPtr(of the surface layer) instead
2406    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2407    checkpoint50e_pre
2408    
2409    checkpoint50d_post
2410    o change kpp output from multiple-record state files to single-record state
2411      files analogous to write_state.F
2412    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2413      analogous to the cg2d-related output.
2414    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2415      so that writing to internal file fn (with length 512) fails.
2416    checkpoint50d_pre
2417    
2418    checkpoint50c_post
2419    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2420    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2421    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2422    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2423    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2424    
2425    checkpoint50c_pre
2426    Merging from release1_p13:
2427    o bug fix for pkg/seaice dynamic solver
2428    o Added SEAICE_initialHEFF to pkg/seaice
2429    
2430    checkpoint50b_post
2431    o store u*,v* in gU,V instead of in guNm1,gvNm1
2432    o in order to put the momForcing out of the Adams-Bashforth:
2433      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2434      to timestep.F
2435    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2436    o re-generate output for highly sensitive test-exp:
2437       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2438    
2439    checkpoint50b_pre
2440    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2441    o corrected CPP option mismatch in exf_Bulk... functions for case
2442      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2443    
2444    checkpoint50a_post
2445    o Bug fix for merging between c50 and KPP.
2446      ikey was passed from thermodynamics to kpp_calc via
2447      common block rather than being recomputed in kpp_calc,
2448      in contradiction with new key itdkey.
2449      New key ikppkey created, and tamc.h headers updated.
2450    
2451    checkpoint50
2452    - 2nd step of merge with ecco-branch:
2453      merge changes in ecco-branch back into main trunk
2454    - bug fix in find_alpha
2455    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2456    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2457    - merged some sliced AD support routines
2458    
2459    checkpoint49
2460    merged from ecco-branch:
2461    o exf:
2462      - Enable initialisation of forcing fields to constant
2463        (runtime) values.
2464      - in exf_getffields.F
2465        Reduce i-/j-loop to interior domain, discarding overlaps.
2466        That also fixes wrong TAF-key computations for key_1, key_2
2467        with bulf formulae.
2468      - exf_init.F modify #ifdef for exf_init_evap
2469      - exf_getffieldrec.F, ctrl_getrec.F
2470        The following INT-usages are not safe:
2471          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2472          fldcount = int(fldsecs/fldperiod) + 1
2473        and were modified.
2474    o autodiff: checkpoint_lev...
2475      - updated storing for bulk formulae (some arrays were missing)
2476      - added state for seaice package
2477      - synchronized with main branch
2478    o DIVA:
2479      Modif.s in
2480      - the_main_loop.F
2481      - the_model_main.F
2482      and added cost_final_restore.F cost_final_store.F
2483      o With these changes, it is possible to fully separate
2484        the first forward run to compute the cost function (mdthe_main_loop)
2485        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2486        into separate model executions.
2487        This enables better tuning of DIVA to given queue sizes.
2488      o Loss of cost function value in consecutive DIVA runs is
2489        fixed by storing to 'costfinal' file.
2490      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2491        beginning/end of adjoint integration is accounted for.
2492      The current changes apply to TAF-1.4.26.
2493      TAF has one remaining bug, requiring one manual change
2494      (see MITgcm manual).
2495    o cal: synchronized between MAIN and ecco-branch
2496    
2497    checkpoint48i_post
2498    o Changes to restore differentiability of code w.r.t. previous tag
2499      (mostly adding new routines to make list and replacing
2500      pressure by totPhiHyd).
2501    o Updated and merged grdchk package
2502      - has both ADM and TLM checks
2503      - works for single- and multi-proc.
2504      - output cleaned
2505      - worked successfully for parallel DIVA
2506    o genmake:
2507      - Adding -platform=SP4
2508      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2509    o Modif. for DIVA:
2510      ctrl_unpack should not be called in intermediate DIVA interval.
2511      (similar thing would apply for active files such as
2512      tbar, sbar, psbar, which should not be reinitialised;
2513      only relevant for ecco-branch)
2514    
2515    checkpoint48h_post
2516    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2517    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2518    o Added SEAICE_initialHEFF to pkg/seaice
2519    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2520    
2521    checkpoint48g_post
2522    --- EOS:
2523    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2524      store total Potential in totPhyHyd for diagnostics & EOS.
2525    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2526    --- Pressure/geopotential gradient:
2527    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2528    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2529      ( changes results of global_ocean_pressure )
2530    o NLFS + z-coord.: add eta*Rho' contribution.
2531    o accurate phiHyd when using interface-W at the middle between 2 centers
2532     ( changes results of ideal_2D_oce )
2533    o includes r* 2nd term in potential gradient.
2534    
2535    checkpoint48f_post
2536    Merging from release1_p12:
2537    o Modifications for using pkg/exf with pkg/seaice
2538      - improved description of the various forcing configurations
2539      - added basic radiation bulk formulae to pkg/exf
2540      - units/sign fix for evap computation in exf_getffields.F
2541      - updated verification/global_with_exf/results/output.txt
2542    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2543      (SBO) core products, including oceanic mass, center-of-mass,
2544      angular, and bottom pressure (see pkg/sbo/README.sbo).
2545    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2546      to avoid negative values in shallow regions.
2547      - updated verification/natl_box/results/output.txt
2548      - updated verification/lab_sea/results/output.txt
2549    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2550    o Added useSingleCpuIO option (see PARAMS.h).
2551    o Updated useSingleCpuIO option in mdsio_writefield.F to
2552      work with multi-field files, e.g., for single-file pickup.
2553    o pkg/seaice:
2554      - bug fix in growth.F: QNET for no shortwave case
2555      - added HeffFile for specifying initial sea-ice thickness
2556      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2557    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2558      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2559    o pkg/seaice:
2560      - adjoint-friendly modifications
2561      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2562    
2563    checkpoint48e_post
2564    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2565    o dynamics: change definition of computational domain & adapt mom_fluxform
2566      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2567    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2568        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2569        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2570        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2571        inverted_barometer solid-body.cs-32x32x1
2572      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2573    
2574    checkpoint48d_post
2575    o in preparation for r*:
2576     a) use pre-computed gradient of hydrostatic potential:
2577        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2578     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2579        => affects results of glob_oce_pressure (different truncation error)  
2580      update output.txt of ideal_2D_oce & global_ocean_pressure
2581    
2582    checkpoint48d_pre
2583    o in preparation for r*:
2584      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2585      pass the 2 comp. of the grad. as arguments to momentum S/R.
2586      but for the moment, only used if it does not change the results.
2587    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2588    
2589    checkpoint48c_post
2590    Modifications in treatment of initial flux forcing controls
2591    to avoid extra storing of flux fields.
2592    
2593    checkpoint48c_pre
2594    o Added tidal_basin_2d experiment (currently 1D!)
2595    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2596    
2597    checkpoint48b_post
2598    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2599     (modification to pressure gradient not yet implemented)
2600    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2601      (for U & V) that are used for vertical advection of momentum.
2602    
2603    checkpoint48a_post
2604    o In preparation for r*, use temp. array to compute vertical transport
2605       in flux-form momentum pkg. => change results of few test-exp.
2606      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2607                        lab_sea, natl_box & plume_on_slope
2608    
2609    checkpoint48
2610    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2611    
2612    checkpoint47j_post
2613    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2614    o moved adexch from forward_step to addummy_in_stepping
2615    o added exch in ctrl_map_...
2616    o aveFreq.=0. at end of cost_final to avoid overwrite in
2617      reverse checkpointing loop
2618    o Yet more changes in gmredi:
2619      * adgmredi_calc_tensor
2620        avoiding all recomputation of gmredi_slope_limit
2621      * adgmredi_x/y/rtransport
2622        added flag for excessive storing to avoid recomp. of
2623        u/v/rtans, dTdx/y/z
2624        -> this is not really necessary and very memory-consuming
2625      * adgmredi_slope_psi:
2626        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2627      * gmredi_slope_limit
2628        re-activated full calculation of taperfct for case 'ac02'
2629    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2630    
2631    checkpoint47i_post
2632    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2633    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2634      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2635    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2636    o gmredi: fix few bugs.
2637    
2638    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2639    This will be a good checkpoint to plug into the ecco-branch.
2640    o few modif.'s to get latest version adjointed
2641      (mainly kick out code in ini_linear_phisurf)
2642    o modif's to run adjoint with exactConserv
2643    o case GM_BOLUS_ADVEC should be cleaned
2644      S/R gmredi_slope_psi should be cleaned
2645    o verification/carbon now has exactConserv=.TRUE.
2646    
2647    checkpoint47g_post
2648    o time-average AIM output: becomes independent from statvars time-average
2649      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2650    o After TAF bug fix:
2651      Tested adjoint of gmredi package.
2652      Tests were done with checkpoint47 rather than with latest
2653      checkpoint47f_post since the latter is broken for the adjoint
2654      verification/carbon/ contains both ADM and TLM gradient checks.
2655    Here they are, before they get changed/lost/stolen.
2656    Mostly modif.'s to fix numerical sensitivities.
2657    Gradient checks OK for
2658    - GM_taper_scheme:
2659      * clipping
2660      * ac02
2661      * linear
2662      * glw91
2663      * dm95
2664      * ldd97
2665    - GMREDI_OPTIONS:
2666      * GM_VISBECK_VARIABLE_K
2667      * GM_NON_UNITY_DIAGONAL
2668      * GM_EXTRA_DIAGONAL
2669      * GM_BOLUS_ADVEC
2670    in conjunction with data.gmredi parameters to be checked in
2671    in a few minutes under verification/carbon/code/
2672    
2673    checkpoint47f_post
2674    Merging from release1_p10:
2675    o modifications for using pkg/exf with pkg/seaice
2676      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2677        and SEAICE_EXTERNAL_FLUXES
2678      - pkg/exf CPP options EXF_READ_EVAP and
2679        EXF_NO_BULK_COMPUTATIONS
2680      - usage examples are Experiments 8 and 9 in
2681        verification/lab_sea/README
2682      - verification/lab_sea default experiment now uses
2683        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2684    
2685    checkpoint47e_post
2686    o created a tag prior to creating a branch
2687    
2688    checkpoint47d_post
2689    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2690      at the bottom boundary had an erroneous half slip boundary condition
2691    o added bottom drag and no slip boundary condition capabilities to
2692      oceanic pressure coordinates code
2693    o added new verification experiment global_ocean_pressure, this experiment is
2694      also described in the tutorial section of the manual
2695    checkpoint47d_pre
2696    
2697    checkpoint47c_post
2698    o Added a verification experiment for a global cubed-sphere ocean run
2699      -  verification/global_ocean.cubed32x32x30
2700      -  uses pkg/therm_seaice and pkg/bulk_forcing
2701    
2702    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2703    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2704      when using P-coordinate; only implemented for atmospheric config.
2705    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2706      NOTES: requires option NONLIN_FRSURF to be "#define".
2707    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2708    
2709    checkpoint47b_post
2710    Merging from release1_p9:
2711    o pkg/seaice
2712      - removed GOTO's and added taf directives
2713      - double precision constants to reduce the g77 (Linux)
2714        to F77 (SGI) differences reported in release1_p8
2715    o tools/genmake
2716      - added SGI options
2717    o verification/testscript
2718      - updated to that of checkpoint47a_post
2719    o verification/global_ocean.90x40x15/input/eedata
2720      - modified for SGI f77 compatibility
2721    o verification/lab_sea
2722      - added description of sea-ice model
2723      - added missing matlab routines
2724      - added test of thermodynamics parallelization
2725    
2726    checkpoint47a_post
2727    o new pkg: aim_v23
2728     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2729       for now, keep the same surface forcing as before.
2730     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2731     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2732     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2733    o add diagnostic of surface correction term in monitor output
2734    
2735    o bulk_force and therm_seaice
2736    - Two packages:  bulk_force (Bulk forcing)
2737      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2738    - Earlier integration from Stephaine Dutkiewicz
2739      and Patrick Heimbach.
2740    - Two ifdef statements for compile time,
2741       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2742    
2743    checkpoint47
2744    differentiable version of checkpoint46n_post
2745    o bug fix in quasihydrostaticterms
2746    o * "clean" adjoint code (in terms of extensive recomputations)
2747        can now be obtained for all GMREDI options (i.e. for
2748        - GM_VISBECK_VARIABLE_K
2749        - GM_NON_UNITY_DIAGONAL
2750        - GM_EXTRA_DIAGONAL
2751        - GM_BOLUS_ADVEC )
2752      * However, wrong gradient check problem remains unsolved.
2753      * New CPP options have been introduced for different
2754        tapering schemes
2755    o external_fields_load now part of differentiation list
2756    o pressure needs multiple storing;
2757      would be nice to have store_pressure at beginning or
2758      end of forward_step, e.g. by having phiHyd global (5-dim.)
2759      (NB: pressure is needed for certain cases in find_rho,
2760      which is also invoked through convective_adjustment).
2761    o recomputations in find_rho for cases
2762     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2763    o #define ATMOSPHERIC_LOADING should be differentiable
2764    o ini_forcing shifted to begining of initialise_varia
2765    o Incorporating QNVS line search routines into MITgcm
2766      (this is separate code, and therefore not under pkg)
2767      lsopt/, optim/
2768    o Updated verification/carbon/
2769      - #define GM_VISBECK_VARIABLE_K
2770      - GM_taper_scheme    = 'ldd97'    
2771    
2772    checkpoint46n_post
2773    Merging from release1_p8:
2774    o verification/natl_box:
2775      updating new external_fields_load routine
2776    o New package: pkg/seaice
2777      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2778      The sea-ice code is based on Hibler (1979-1980).
2779      Two sea-ice dynamic solvers, ADI and LSR, are included.
2780      In addition to computing prognostic sea-ice variables and diagnosing
2781      the forcing/external data fields that drive the ocean model,
2782      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2783      The implied surface heat flux is then stored in variable
2784      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2785      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2786      non-local transport term.  Because this call precedes model
2787      thermodynamics, temperature under sea-ice may not be "exactly" at
2788      the freezing point by the time theta is dumped or time-averaged.
2789      N.B.: fairly large differences in accuracy occur across
2790            different platforms/compilers; comparison between
2791            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2792            generated output gives:
2793       T           S           U           V
2794      C D M    c        m  s        m  s        m  s        m  s
2795      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2796      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2797      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2798    
2799      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2800    o GAD:
2801      - generated new common blocks to account for call of
2802        same gad routines with differing traceridentities
2803        (needed to modify tracerIdentity indices in GAD.h)
2804      - generated separate common blocks for case useCubedSphereExchange
2805        (Department of Futurology)
2806      - parameter lists to gmredi_?transport: added tracerIdentity
2807      - added new key indices to tamc.h
2808    o external_fields_load:
2809      - added this routine to TAF list
2810      - needed to make some common blocks global and additional storing
2811        along the same lines as exf package (checkpoint_lev?_directives.h)
2812    o exf:
2813      updated external forcing package
2814      - bug fixes carried over from ecco-branch
2815        (missing OBCS_OPTIONS.h in two routines)
2816      - enable easy to use "no forcing".
2817      - added exf I/O for atmospheric loading
2818      - added exf I/O for runoff data
2819      - transfered scaling between exf <-> MITgcm to exf namelist
2820    o Adding new verification experiment global_with_exf.
2821      This verification experiment is almost identical to the
2822      global_ocean.90x40x15 experiment, except that it uses
2823      the exf (and cal) package instead of the
2824      external_fields_load routine (cf README file).
2825    
2826    checkpoint46m_post
2827    o modified testscript to return -- when there are no lines of "%MON" output
2828    o added new flag "quasiHydrostatic" for QH mode
2829      and new routine quasihydrostaticterms()
2830    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2831      New routine: mom_u_coriolis_nh()
2832    o fixed sign of non-hydrostatic metric terms in u and v equations.
2833      Depend on correct sign of gravitySign.
2834    o added work.pc* to .cvsignore in aim directories using ifc
2835    o introduced flag for controllin non-hydrostatic metric terms
2836    o removed gravitySign from PARM04
2837    o switched to g77/ifc from pgf77 in aim experiments
2838    
2839    checkpoint46l_post
2840    o made convective adjustment work with pressure coordinates:
2841     - changed the direction of k-loop in convective_adjustment.F for the
2842       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2843     - adjusted the reference pressure k-index in convective_adjustment.F
2844     - adjusted the convection condition in convect.F (in analogy to
2845       calc_ivdc.F)
2846     - convective_adjustment no longer computes anything on the halos
2847     - removed the warnings about negative salinity from find_rho.F and
2848       find_alpha.F; instead the new routine look_for_neg_salinity, called
2849       at the beginning of find_rho, find_alpha, and find_beta, does a
2850       check of the entire slice, if CPP-option
2851       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2852    checkpoint46l_pre
2853    
2854    checkpoint46k_post
2855    o fixed the verification/global_ocean.90x40x15 experiment:
2856     - new bathymetry (the world according to A., JMC, and M.)
2857     - new initial fields and forcing fields (*.bin files)
2858     - new POLY3.COEFFS (for the next release one should switch to a full
2859       equation of state: JMD95P or MDJWF)
2860     - fixed several errors and redundancies in the data file
2861     - experiment uses looped cells
2862     - added matlab directory with diagnostic scripts for plotting of output
2863    
2864    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2865     - read AIM physics parameters from a file (data.aimphys)
2866     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2867    
2868    checkpoint46j_post
2869    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2870    o move wVel computation at the end of the time step, in S/R integr_continuity
2871    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2872    o update timeave pkg for wVel diagnostic.
2873    checkpoint46j_pre
2874    
2875    checkpoint46i_post
2876    o Clean up AIM package (and keep the results unchanged):
2877      include CPP_OPTION and use IMPLICT NONE in all routines ;
2878      declare all the variables _RL ; use _d 0 for all numerical constants.
2879      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2880    
2881    checkpoint46h_post
2882    o cleaned up the use of rhoNil and rhoConst.
2883      - rhoNil should only appear in the LINEAR equation of state, everywhere
2884        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2885        and the dynamical equations are all divided by rhoConst
2886    o introduced new parameter rhoConstFresh, a reference density of fresh
2887      water, to remove the fresh water flux's dependence on rhoNil. The default
2888      value is 999.8 kg/m^3
2889    o cleanup up external_forcing.F and external_forcing_surf.F
2890      - can now be used by both OCEANIC and OCEANICP
2891    checkpoint46h_pre
2892    
2893     Added code to convert surface volume flux (fresh water) into
2894     a mass flux when using P coordinates in the ocean (OCEANICP).
2895     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2896    
2897    checkpoint46g_post
2898    o Include a new diagnostic variable phiHydLow for the ocean model
2899      - in z-coordinates, it is the bottom pressure anomaly
2900      - in p-coordinates, it is the sea surface elevation
2901      - in both cases, these variable have global drift, reflecting the mass
2902        drift in z-coordinates and the volume drift in p-coordinates
2903      - included time averaging for phiHydLow, be aware of the drift!
2904    o depth-dependent computation of Bo_surf for pressure coordinates
2905      in the ocean (buoyancyRelation='OCEANICP')
2906      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2907        Theta, Salinity, and Pressure in the parameter list. This routine is
2908        presently contained in find_rho.F. This routine does not give the
2909        correct density for 'POLY3', which would be a z-dependent reference
2910        density.
2911    o cleaned up find_rho
2912      - removed obsolete 'eqn' from the parameter list.
2913    o added two new verification experiments: gop and goz
2914      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2915    checkpoint46g_pre
2916    
2917    checkpoint46f_post
2918    o Enable tangent linear (forward mode) gradient checks:
2919      - extended active file handling to g_... files
2920      - added TANGENT_SIMULATION to theSimulationMode
2921      - extended grdchk package accordingly
2922    o added tangent linear setup in verification/carbon/code_ftl
2923    o added adjoint setup in verification/front_relax/code_ad
2924    
2925    checkpoint46e_post
2926    o Added new equation of state -> MDJWF
2927      - EOS of McDougall et al., 2002, JAOT, submitted
2928      - caveat: the equation of state is only valid for a smaller (more
2929        realistic?) range of values than JMD95P/Z and UNESCO
2930      - added masks to the calculation of pressure in store_pressure
2931      - added more check values for density in check_eos (ini_eos.F), some of
2932        the old check values are out of the range of the MDJWF-eos, so don't
2933        expect perfect matches for those
2934    checkpoint46e_pre
2935    
2936    checkpoint46d_post
2937    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2938      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2939      case of pressure coordinates. eosType='JMD95Z' in
2940      combination with buoyancyRelation='OCEANICP' now causes an error.
2941    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2942      in find_alpha/beta.
2943    checkpoint46d_pre
2944    
2945    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2946      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2947    
2948    checkpoint46c_post
2949    o Changes necessary for ocean in p-coordinates
2950     -  Added new buoyancy relation = 'OCEANICP'
2951     -  Added new parameters = gravitySign (this used to be contained inside
2952        the factor dRdZ which I added when we first switched to R coordinates).
2953     X GM/Redi is not compatible (yet)
2954     X bottom drag and no-slip need to be debugged.
2955    checkpoint46c_pre
2956    
2957    checkpoint46b_post
2958    o Added new equation of state -> JMD95Z and JMD95P
2959      - EOS of Jackett and McDougall, 1995, JAOT
2960      - moved all EOS parameters into EOS.h
2961      - new routines ini_eos.F, store_pressure.F
2962    o Added UNESCO EOS, but not recommended because it requires
2963      in-situ temperature (see JMD95)
2964    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2965      unesco.f to be used with POLY3
2966    checkpoint46b_pre
2967    
2968    checkpoint46a_post
2969    o Added (atmospheric) pressure loading
2970      - new field in FFIELDS.h, etc...
2971      - new cpp flag ATMOSPHERIC_LOADING
2972    o Changed hFacC to _hFacC in calc_phi_hyd.F
2973    o Added SHORTWAVE_HEATING to some files for consistency
2974    checkpoint46a_pre
2975    
2976    checkpoint46
2977    further merges from release1_p5
2978    o new ctrl package
2979      - adopted from ECCO environment to enable optimization
2980      - added Eliassen Palm fluxes to controls
2981    o added Eliassen Palm flux controls to gradient check package
2982    o cost package
2983      - Compatible with new ctrl package
2984      - added Eliassen Palm cost hooks
2985      - modif's of existing cost functions
2986    o Adjoint-related bug fixes in kpp:
2987      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2988      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2989    o autodiff package
2990      - flow directives:
2991        + new for S/R do_the_model_io
2992        + enhanced for S/R checkpoint
2993        + new gmredi.flow
2994      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2995        disable adcommon.h/g_common.h by default.
2996      - fixed problem for adjoint of global_max
2997    o modified verification/carbon/
2998    o New setup for adjoint of global_ocean
2999    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3000    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3001    o incorporated hooks for sponge layer code (external_forcing.F)
3002    
3003    checkpoint45d_post
3004    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3005    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3006      (affects plume_on_slope "cg2d" output)
3007    o add new parameter deltaTfreesurf for free-surface time stepping
3008    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3009  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3010  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3011  o add new flags:  o add new flags:

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