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revision 1.193 by edhill, Thu Oct 23 04:41:40 2003 UTC revision 1.903 by jmc, Mon Nov 5 16:02:31 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  untagged  o cleaning-up:
8      - fix CPP instruction syntax in pkg/obcs
9      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
10        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
11      - fix some threads issue in IO parts.
12    o pkg/dic:
13      - add tons of "_d 0" (--> much better testreports !)
14       and then update outputs of tutorial_global_oce_biogeo
15    o pkg/mom_fluxform:
16      add a special version of momentum advection intended to conserve momentum
17      next to a bathymetry step or a coastline edge. (default = off = #undef)
18    o new read/write pickup version:
19      - for now, only implemented for main (mdsio) pickup file.
20      - write out only what is needed to restart; merge pickup_nh , pickup_ph
21        and main pickup together.
22      - read meta file; read only what is needed to restart; stop if a field
23        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
24        if it make sense (even if the restart is not perfect).
25      - if no meta file, assume that pickup to read corresponds exactly to
26        a pickup that would currently be written.
27      - read pickup written in the old format (until checkpoint59i) if it
28        recognizes an old meta file (no field-list).
29      - add a meta file in exp. which starts from a pickup: 2 cases:
30        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
31         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
32        b) a meta file describing the content of the associated pickup file
33         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
34    o pkg/mdsio & pkg/rw:
35      - new routine to read a meta file ; new set of routine to read
36        Multiple-fields file (with meta file).
37    o added open boundary conditions capability for seaice
38        HSNOW, HSALT, UICE, and VICE
39    
40    checkpoint59i
41    o adjoint:
42      * fix multiDimAdvection adjoint
43        (partial recomputation problem by TAF for fVerT(:,:,kDown)
44        and comlev1 size definition (maxpass vs. max. number of tracers)
45      * verification/global_ocean.90x45x15 adjoint now tests
46        NLFS and multiDimAdvection using DST3 (=30)
47      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
48    o pkg/kpp: add "_d 0" to real constant (if missing);
49      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
50      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
51    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
52      for internal parameters related to restart process (formerly from PARAMS.h)
53      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
54    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
55      as argument. (only atm2d & obcs write_pickup have not yet been updated)
56    o pkg/monitor:
57      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
58      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
59      - account for deep Atmosphere factor and density factor (anelastic)
60    o added open boundary conditions capability for seaice HEFF and AREA
61    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
62      thermodynamics
63      - requires a little reorganization, which affects the testreport results
64        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
65        so that now the conservative form is tested
66      - add a few comments
67    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
68    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
69    o add new diagnostics to seaice: advective, diffusive fluxes (only for
70      multidim-advection, for scheme 2 they are not filled) and transports,
71      thermodynamic growth rates
72    o change units of EmPmR (inside the code, + within coupling interface)
73      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
74      Affects results @ truncation level (cg2d match) and update output of
75       experiments: lab_sea(6), global_ocean.90x40x15(10),
76      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
77      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
78      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
79      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
80    
81    checkpoint59h
82    o pkg/exf:
83      - improve vectorization by moving if-statement out of loops in
84        exf_mapfields, exf_radiation
85      - exf_bulkformulae.F: introduce 2D fields and vectorize code
86    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
87    o testreport:
88      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
89        monitor & update offline_exf_seaice exp. output.
90      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
91    o pkg/seaice:
92      - bug fix in the evp solver: boundary conditions were affected be
93        masking of zMax/zMin (changes results)
94      - minor bug fix in boundary conditions in seaice_calc_strainrates
95        (changes results for no_slip)
96      - seaice_lsr.F: make interpolation of eta dependent on boundaries
97      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
98      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
99        stress formulation and no-slip boundary conditions
100    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
101      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
102    o pkg/seaice: a first HSALT time stepping equation has been checked in
103    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
104      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
105      without requiring DO-IF statements
106    o pkg/thsice:
107      use continuous power-law function for partition of energy between lateral
108      melting/freezing and thinning/thickening ; old code using step function
109      still available with #undef THSICE_FRACEN_POWERLAW
110      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
111    o testreport: change AD testing : check against results/output_adm.txt
112      using same scripts as for forward test.
113    
114    checkpoint59g
115    o adjoint testing: in preparation for changing testreport:
116      - output format: cost and grad written on separated lines
117      - ad output results in directory "results" (instead of "results_ad")
118    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
119    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
120    o pkg/ecco: allow user defined cost function contributions
121    o testreport:
122      Allow to choose (per experiment) the list of tested output variables
123       and the main variable (used to issue a pass/FAIL ) ;
124      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
125      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
126      Also modify printing of summary:
127       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
128       b) echo the list of tested variables in the individual summary.txt of
129          each experiment.
130    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
131      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
132      (but still depend on the tile decompostion of the domain).
133    o pkg/seaice: change a discretization detail to make the B-grid code
134      "more symmetric". This change is likely to remove all "ridges/leads" that
135      where quasi-aligned with the grid in B-grid solutions. It may also be
136      the solution to the stress coupling issues with the B-grid.
137    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
138      remove .cvsignore from input dir. (since testreport no longer run here).
139    o pkg/thsice:
140     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
141     - fix reshaping of sea-ice just after advection:
142       melt all the ice only if ice-volume is too small.
143     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
144       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
145     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
146    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
147      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
148    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
149      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
150      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
151      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
152      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
153      -> update output.txt
154    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
155     this affects truncation error: -> update output.txt of exp:
156      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
157      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
158    
159    checkpoint59f
160    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
161    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
162      a bounded range (in forward mode)
163    o pkg/ecco, ctrl, autodiff and mom_common:
164     internal parameter controls, completements of implementations
165    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
166    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
167      (not seem any difference in testing results).
168    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
169       at face corners.
170    o pkg/generic_advdiff:
171     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
172      loop range indices for computing vertical advection tendency
173      and do the calculation in the interior only (no overlap) ;
174      for now, only implemented for SOM advection (to save CPU time).
175     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
176    o exch2 adjoint
177      First set of changes:
178      - add exch2 hand-written adjoint templates
179      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
180        This will require cleanup in pkg/autodiff/*.F
181        (changed routines currently kept separate in verif. code/)
182      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
183        that used to hide exch2 or cubed-sphere specific code
184        (commented via 'cph-exch2')
185    o pkg/seaice
186      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
187    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
188       output of global_ocean.cs32x15.thsice .
189    
190    checkpoint59e
191    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
192      for B-grid vector (not yet tested) and C-grid vector (<- only used
193      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
194    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
195      (#ifdef ALLOW_SALT_PLUME)
196    o gather_2d/scatter_2d: removed halo regions
197    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
198      scheme and the corresponding test case (under front_relax dir). For now,
199      only available with Skew-flux form and not yet tested in realistic set-up.
200      adjoint: store directives updated, but gradient checks deteriorated,
201      so maybe GM/Redi adjoint is now broken.
202    o seaice adjoint
203      * add AREA, HEFF, HSNOW as control variable
204        (should not change lab_sea results)
205      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
206    o pkg/seaice:
207      * added computation of saltFlux in seaice_growth;
208        For time being, sea ice salinity is assumed constant
209        contribution of snow flooding to freshening of sea ice is neglected.
210        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
211        defaults to 0.0 in order to maintain backward compatibility.
212        Typical values for SEAICE_salinity are 4 to 10 g/kg.
213      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
214      * added SEAICE_availHeatFrac, which specifies fraction of surface level
215        heat content used to melt or grow ice
216      * commented out cap of HICE: it helps keep ice thinner
217      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
218      * applied OBCS T/S mask to HEFFM sea ice mask
219    
220    checkpoint59d
221    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
222     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
223     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
224    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
225     and change default value of parameter "GM_Small_Number";
226     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
227       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
228       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
229    o pkg/ecco: cost function when applying pkg/smooth to controls
230    o pkg/ctrl: add forcingPrecond run time parameter
231    o pkg/seaice:
232     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
233     - fix bug in metric terms of u-equation in LSR solver (implicit part),
234       changes verification/lab_sea
235     - rearrange implicit part of u-equation in LSR solver to make it easier to
236       read, understand, and debug. This causes changes at the truncation level.
237     - fix (serious) bug in the boundary conditions (sign error in the implicit
238       part) of the LSR solver. Changes all LSR results.
239     - fixed problem with HSNOW initialization to avoid thick snow when AREA
240       is initilized with small values - does not change lab_sea results.
241     - added HsnowFile initialization capability
242    o pkg/smooth: addition to model/src and pkg/ctrl so allow
243     initialization of pkg/smooth and application to control vector
244    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
245    o dependencies: pkg/profiles requires pkg/cal
246    o pkg/profiles:
247     - added option ALLOW_PROFILES_GENERICGRID
248         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
249         that interpolation information (grid points and coefficients) is provided
250         within the netcdf input files.
251         -> sample matlab scripts can be found in MITgcm_contrib/gael
252         that allow you to prepare netcdf input files.
253     - also modified: cleaner include statements, cleaner error print statements,
254       cleaner stops when error, and more tests of the netcdf input files consistency.
255    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
256    o pkg/seaice:
257     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
258       requires a new routine: seaice_diagnostics_fill.F
259     - make sure that seaice does not move if not forced (pressure replacement
260       method, Hibler and Ip, 1995), changes results
261     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
262     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
263       It is turned off by default (=-1.), because it changes the results.
264     - make it possible to read AREA from a file, too.
265    
266    checkpoint59c
267    o add S/R and diagnostics for oceanic mixed-layer depth
268    o move GMRedi call after all vertical mixing schemes (including KPP)
269    o pkg/thsice:
270     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
271      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
272    o pkg/obcs:
273     - bug fix for balance code
274    o pkg/seaice:
275      - allow values of SEAICE_elasticParm > 1
276      - add new parameter SEAICE_evpTauRelax as an alternative
277        to SEAICE_elasticParm
278      - make lsr boundary conditions free slip (by default), changes result
279      - add code for no slip boundary conditions for lsr
280      - set minimum of zeta to zero (and not 4e8) (changes results)
281      - add a cap on AREA after advecting AREA if seaice_growth is not called
282    o change calculation of Visbeck K:
283      - no longer depend on tapering scheme; instead, compute slope (limited
284        by GM_maxSlope). this is equivalent to what was comuted before with
285        clipping or linear tappering.
286      - fix vertical averaging (wrong by 1/2 level)
287      - leave the old version (but will not be maintained) within
288        #ifdef OLD_VISBECK_CALC / #endif
289      - update output of exp. ideal_2D_oce
290    o change error catch in calc_r_star to improve vectorization
291    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
292      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
293    o adjoint:
294      Re-organized adjoint checkpointing according to Matt Mazloff
295      (but with modifs/completions/cleanups)
296      Storing is now bundled into large arrays to optimized I/O
297      (and second step in cleanup of the_main_loop)
298    
299    checkpoint59b
300    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
301      - export/import (between ocean & coupler) fields needed for ocean DIC.
302    o pkg/seaice:
303      - get rid of three more exchanges seaice_calc_viscosities (required
304        different loop boundaries in seaice_lsr and seaice_ocean_stress)
305      - bug fix in seaice_ocean_stress (update of lab_sea required)
306      - reduce loop boundaries to necessary minimum also in seaice_evp
307      - go back to the old way of computing deltaC/Z as the adjoint likes that
308        better
309    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
310      passive tracer to an Age Tracer) + update output.txt
311    o pkg/exf:
312      - implement A-grid / C-grid selection for wind-stress input files.
313      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
314      for now, in exf_bulk_largeyeager04.F only :
315      - change implementation for case where windspeed + 2. components wind-stress
316        are read-in. AND use rhoConstFresh to convert evap.
317    o pkg/seaice:
318      - use correct EXCH_UV for wind-forcing (on A-grid).
319      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
320        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
321    o pkg/exf:
322      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
323      EXF_INTERPOLATION:
324      - merge global_with_exf/code version of exf_interp_read.F
325        to the main code ;
326      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
327        reading the file ; Important: This options needs to be defined to recover
328        previous code.
329        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
330      - no longer loose real*8 precision along the way when using exf_iprec=64.
331    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
332      - change discretisation of evp-solver in order to avoid another exchange
333        (changes lab_sea) and clean up a little
334      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
335        help the adjoint (this also changes the results slightly)
336      - add a few "_d 0" where they had been missing in seaice_evp.F
337      - cleaning up: remove unused seaice_calc_rhs.F
338    o pkg/exf: some cleaning-up:
339      - change various "constants" into runtime parameters
340      - cleaned-up Large&Yeager04 routine which should eventually
341        replace exf_bulkformulae.F (changed names of S/R and CPP)
342        and merged various ALLOW_ATM_WIND options
343     only used with thsice pkg (in thsice_get_exf.F):
344      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
345        which are used when useStabilityFct_overIce=TRUE (= the default)
346      - change default values of ice & snow emissivity and scale downward LW
347        by ice & snow emissivity.
348    o pkg/thsice:
349     fix few little problems, in thsice_calc_thickn.F:
350      - growth vertically (and not laterally) if iceFrac == iceMaskMax
351      - melt only laterally if hIce < hThinIce (as the comments say)
352      and in thsice_extend.F:
353      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
354      - start to form ice as soon as the minimum ice-volume is reachable.
355     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
356      and cpl_aim+ocn
357    o pkg/kpp
358     - move computation of surface related input fields to KPP into a new
359       subroutine kpp_forcing_surf.F
360     - remove wrong (within bi,bj loops) EXCH calls.
361     - little cleaning (add argument myThid in last position, cvs header ...)
362     - for now, fix conservation problem by exchanging KPPviscAz (may not
363       be the best fix)
364    o pkg/seaice
365     - check for inconsistent evp parameter/cpp-flag combination
366     - remove leftover errIO flat for obsolete name list error handling
367    o OpenAD
368     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
369    
370    checkpoint59a
371    o pkg/seaice: some parameter clarifications and a little bit of clean up
372    o pkg/thsice: rename run-time parameters:
373       himin       -> hIceMin
374       himin0      -> hThinIce
375       hihig       -> hThickIce
376       i0          -> i0swFrac
377       transCoef   -> bMeltCoef
378       frac_energy -> fracMelting
379      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
380       with default values (for now) that do not change the results.
381      remove old version of thsice vars advection in pkg/seaice.
382    o in FFIELDS.h:
383      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
384      - make pLoad & sIceLoad always available (but still only used if
385         ATMOSPHERIC_LOADING is #define).
386    o pkg/kpp: replaced _KPP_RL with _RL
387    o bug fixes for vertical diffusivity computations when both KPP and
388        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
389        are no longer updating the vertical diffusivity array
390        (passed as argument) but are (re-) setting those arrays.
391    o pkg/seaice: fix bug in evp solver, while doing that
392      - change (improve?) discretization of stress computations for both
393        cgrid-lsr and evp solver
394      - add a new routine to compute strain rates
395      - the above changes lab_sea results
396      - add no slip conditions for evp solver (off by default), lsr-version
397        may follow
398      - fix exchange for shear at Z-points (does not change lab_sea)
399      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
400        (to force the user to pick a time step since there is not "safe" way
401        of choosing it)
402      - add principal stress diagnostics
403      - rearrange fields for evp a little to avoid having to call a: too many
404        exchanges and b: exchanges for stress trensor components which we do
405        not have.
406      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
407        of evp, complete rewrite for lsr case (latter is does not yet work
408        in all cases)
409    o pkg/kpp: add code to have mixing in shelf ice caverns
410      - add myThid to all kpp routines (long overdue)
411    
412    checkpoint59
413    o pkg/exf:
414      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
415        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
416      - move exf header files from lower_case.h to UPPER_CASE.h ;
417        add missing cvs Header & Name
418      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
419      - add namelist param. selectStressGridPosition, exf_monFreq
420      - retire many _CLIM routines, and remove data.exf_clim
421        + params moved to data.exf
422        + climsst, climsss now handled by exf_set_gen, i.e.
423          climss?period=0 refers to constant field,
424          climss?period=-12 to monthly forcing
425      - split up namelists in data.exf
426    o pkg/seaice:
427      - remove seaice_exch and seaice_exch_uv
428      - remove superfluous exchange of theta
429      - add myThid to seaice_budget_ocean/ice
430      - add new interface for atmospheric wind forcing (C-grid only)
431        + new routine
432        + two new field (taux, tauy for stress over ice)
433        + removed one global field (DAIRN) for C-grid case only
434    o pkg/thsise
435      - 2nd set of modifs for thsice adjoint in conjunction with exf
436    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
437    
438    checkpoint58y_post
439    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
440      vertical diffusivity, similar to that in MOM4; turned on using
441      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
442      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
443    o Added capability for 3D specification of background vertical diffusion
444      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
445      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
446      "data" file that contains the 3D vertical diffusivity coefficients.
447    o ice dynamics (pkg/seaice) with thsice thermodynamics:
448      - add code within pkg thsice to advect & diffuse sea-ice fields
449      similar to (and will replace) what has been added in  seaice_advdiff.F,
450      but: - conserving Mass, Heat & Salt.
451           - better when using non-linear advection scheme (not yet fully tested)
452           - can also be used in atmospheric set-up (for now, only the diffusion).
453    
454    checkpoint58x_post
455    o IO option for global-file compact format:
456      - add options when generating topology (utils/exch2/matlab-topology-generator)
457      - add I/O capability (pkg/mdsio).
458      - adapt utils/matlab/rdmds.m to read this format.
459      for now long-line format not yet supported by pkg/mdsio (& exch2).
460    o shelfice: add a few diagnostics
461    
462    checkpoint58w_post
463    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
464      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
465      (and replace horiVertRatio in NH code).
466      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
467                         and tutorial_plume_on_slope (sensitive to truncation)
468    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
469      directly to drive seaice model (C-grid only)
470    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
471     - reintroduce computation of wind from stress,
472     - compute tau (in exf_bulkformulae.F) from windstress averaged to
473       mass points to avoid tau = 0
474     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
475    o rdmnc.m: make it work with "global" files created with gluemnc
476    o rdmnc.m : some improvements in dealing with singleton dimension
477      (tested on all testreport mnc output files).
478    o genmake2: disable pkg/profiles if netcdf test fails.
479    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
480    o move call to cal_readparms up to make calendar parameters/variable available
481      to all packages
482    
483    checkpoint58v_post
484    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
485      useDynP_inEos_Zc tested.
486    o pkg/exf: changes to properly interpolate/mask/scale initial fields
487    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
488      and portions thereof.  See read_cs.txt for description and examples.
489    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
490      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
491      following the great-circle arc between those 2 points.
492    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
493      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
494    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
495     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
496     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
497     - still needs work (not working with some options ; efficiency to improve)
498       and serious testing.
499     - use this scheme for temperature & salinity in 2 advection test exp.:
500       advect_xy & advect_xz, respectively.
501    
502    checkpoint58u_post
503    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
504    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
505    o testreport: add option "-skipdir" to skip some test.
506    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
507      momentum calculation.
508    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
509    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
510      remove checkpoint.F and the_correction_step.F (no longer used);
511      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
512    o add option (linFSConserveTr) to correct for tracer source/sink due to
513      Linear Free surface
514    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
515    o pkg/thsice: fix reading mnc-pickups
516    
517    checkpoint58t_post
518    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
519    o pkg/mdsio:
520     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
521       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
522       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
523     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
524     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
525       either MDS_READ_FIELD or MDS_WRITE_FIELD )
526     - new S/R (to replace MDSWRITEMETA), which allows to write more
527       informations (variable names, time ...) to meta files.
528     - modify rdmds.m to give back the meta file content.
529    o pkg/diagnostics: change vertical interpolation to be safer, and more
530       flexible (define p-levels to interpolate to in data.diagnostics);
531      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
532       diagnostic pointer.
533    o pkg/seaice: more cleaning up of seaice_growth, added many comments
534    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
535    o fix multi-category seaice:
536     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
537       SEAICE_MULTICATEGORY
538     - fix short wave heat flux
539    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
540       and allow to use EVP solver. Change forward lab_sea: test both EVP
541       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
542    o Initial check-in of lab_sea adjoint
543      (very similar to natl_box_adjoint/code_seaice)
544      * used C-grid and EVP solver
545      * used KPP, GM/Redi
546      * uses inAdExact=.TRUE.
547      * gradient checks fail for both ADM and TLM
548        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
549        f.d. gradients actually seem more problematic than ADM, TLM gradients;
550        issue is related to forward mismatch between g77 an ifort
551    o pkg/seaice: overhaul of thermodynamics
552     - growth.F and groatb.F are replaced by new routine seaice_growth.F
553     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
554     - move a few global fields out of SEAICE.h into seaice_growth.F and
555       make them 2D (FICE/QNETO/ ...)
556     - remove FO (it is the same as QNETO)
557     - introduce a few local fields to avoid modifying external fields such
558       as atemp, etc.
559    
560    checkpoint58s_post
561    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
562      changed exf_set_gen.F so that
563        genperiod=0 means input file is one time-constant field and
564        genperiod=-12 means input file contains 12 monthly means
565    o CG2D: use pre-computed solver main-diagonal (stored in common block);
566      this affects truncation error ; generate new output file for exp. which
567      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
568        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
569        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
570        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
571        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
572        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
573    o start implementation of deep-atmosphere and anelastic formulation
574    o verification: remove 2nd copy of input files and use script "prepare_run"
575      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
576    o mom_common/vecinv/fluxform: fix a few initialisation isssues
577    o profiles: fix for multithreaded case
578    
579    o diagnostics: rename few diags:
580      s/'PRESSURE'/'RCENTER '/g
581      s/'TICE    '/'oceFreez'/g
582      s/'TAUX    '/'oceTAUX '/g
583      s/'TAUY    '/'oceTAUY '/g
584      s/'SWFLUX  '/'oceQsw  '/g
585      s/DIFx/DFxE/g
586      s/DIFy/DFyE/g
587      and add few ocean-forcing diagnostics:
588      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
589    o modifications to pkg/seaice/growth.F and budget.F, which change results of
590      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
591      as actual snow thickness.  It now refers everywhere to effective snow
592      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
593    
594    checkpoint58r_post
595    o modifications to pkg/seaice/growth.F, which change results of
596      lab_sea experiment: fixes pertain to melting snow over open water, to
597      masking EVAP under sea ice, and to using the correct AREA variable for
598      computations of EVAP, PRECIP, HSNOW, and GHEFF
599    o add ability to read bathy, salt, and theta using MNC (off by def)
600    o add flooding algorithm and advection of HSNOW for pkg/seaice;
601      both are turned off by default and do no change any results
602    o seaice advection with pkg/thsice: a step toward the use of non-linear
603      advection scheme, but #ifdef or commented out for now (requires more EXCH).
604    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
605      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
606      in natl_box (affects results @ truncation level: update output.txt)
607    o multi-threading and IO:
608      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
609      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
610        (needed to work with SingleCpuIO): tested in all verif. exp.
611    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
612      affects the results (but none of the verification test uses this scheme).
613    o Adding some pkg/diagnostics capability to pkg/seaice
614      (will certainly be subject to changes)
615    o ctrl: adding new control variables:
616      lwflux, lwdown, evap, snowprecip, apressure, runoff
617    
618    checkpoint58q_post
619    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
620      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
621      high_res_cube configuration by 4% on Columbia.
622    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
623      add (in global_with_exf/code) a version of EXF_INTERP_READ without
624      dynamical allocation (seems to work in multi-threaded).
625    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
626      single CPU io) so that TAF does not have to see EESUPPORT.h
627    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
628    
629    checkpoint58p_post
630    o obcs: stop if obcs is used with useCDscheme = .true.
631    o shelfice:
632     - fix a sign error so that no slip at shelfice interface works
633     - remove stop for combination non-hydrostatic code and shelfice. That does
634       not mean, that the results are correct, but at least they are numerically
635       stable
636    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
637    o added adjoint exch routined for all exch*3d* routines
638      and updated flow directives
639    
640    checkpoint58o_post
641    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
642      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
643    o change controling S/R for writing pickup file (new S/R do_write_pickup)
644      and clean-up reading/writing of pickup files.
645    o fix local version of read/write pickup (NH part) in rotating_tank/code
646    o simplify EXCH interface:
647     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
648     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
649    o added the regrid package
650    o shelfice:
651     - add a simple boundary layer scheme to reduce noise
652     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
653    
654    checkpoint58n_post
655    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
656       local variable (not in common block).
657    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
658      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
659      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
660        to work with SingleCpuIO.
661    o add "_d 0" to real constant of pkg/cfc subroutines ;
662       update exp. cfc_exemple & tutorial_cfc_offline output files.
663    o multi-threading and IO:
664      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
665        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
666      - barrier before and after reading.
667      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
668      - avoid using MDS_WRITELOCAL for LAND pkg output.
669      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
670        common-block variables ; Allows multi-threading with master-thread IO.
671    o change default MAX_NO_THREADS from 32 to 4 ;
672      and stop cleanly when MAX_NO_THREADS is too small.
673    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
674    
675    checkpoint58m_post
676    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
677       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
678    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
679       keep global_ocean.90x40x15 (for AD testing) with former secondary test
680       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
681    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
682        add MITgcm_tutorials (= code + all the tutorials)
683    o ecco, option to compute cost for total ssh (mean+anom)
684    o consistent with addition of ptracer and ssh in pkg/profiles
685    o profiles: adding ptracer and ssh
686    o testreport: change multi-test output-file name
687      (from output.txt.{name} to output.{name}.txt)
688    o profiles: now ok for mutli-tiles case
689    o seaice: add 4 parameters for different advection schemes for area,
690      (effective) seaice thickness, enthalphy, and snow height. Their default
691      is the standard parameter SEAICEadvScheme
692    o calc_gw:
693     - add cosFacU in zonal viscous flux (harmonic.visc.).
694     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
695       of tutorial_plume_on_slope.
696    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
697    o calc_gw: true flux-form, account for horizontal grid spacing.
698      update rotating_tank results, but not plume_on_slope (affected at
699      truncation level, 11 digits).
700    
701    checkpoint58l_post
702    o calc_gw:
703     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
704     - remove side-drag for now (need to fix it); update plume_on_slope results.
705     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
706    o commit code to make SST/SSS weights spatially variable
707      (based on either variable in-situ or variable initial T/S weights)
708    o pkg/ecco:
709      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
710        now based on horizontally varying weights wthetaLev, wsaltLev
711      * cost_averagesflags now returns year indices in addition to day, month
712      * sflux balance is performed on annual basis
713        (sflxumm, sfluxmm2, bal_sfluxmm)
714      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
715        including separate counting and multipliers
716    o pkg/rbcs
717      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
718    
719    checkpoint58k_post
720    o testreport:
721     - always build in dir. "build" (if not there, mkdir build instead of building
722       & running in input)
723     - run in dir run (if it exists), in build otherwise.
724     - call prepare_run (if input/prepare_run exists)
725     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
726    o pkg/exf modifications to interpolation and rotation routines for more
727       reasonable treatment of North Pole singularity: for tracers North Pole
728       value is set to northernmost zonal-mean value, for zonal velocity it is
729       set to zero, and for meridional velocity it is set to northernmost value.
730    o pkg/exf/exf_check_range.F
731     - add tile index to diagnostics and move stop statement to the very
732       end of the routine.
733    o pkg/diagnostics: (diagnostics_main_init.F)
734      define title of isomorphic variables according to the current config.
735    o pkg/thsice with pkg/seaice dynamics:
736    - fix domain of computation (interior only, required for exf) and do exchanges
737    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
738    o towards a standard way of dealing with multi-threading in MONITOR
739      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
740    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
741       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
742    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
743    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
744    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
745       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
746    o tracer advection:
747     - clean-up and simplify calc_common_factors.F
748     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
749       advection subroutine (but still not used within DST advection S/R)
750    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
751    
752    checkpoint58j_post
753    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
754      from file (collects calls previously in FORWARD_STEP)
755    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
756    o adjoint store dir. adjusted accordingly
757    o genmake2
758      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
759    
760    checkpoint58i_post
761    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
762      on wind stress (SEAICEstressFactor defaults to 1.)
763    o Total number of Timers is finite (<=40): comment out 2 non-essential one
764      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
765    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
766      on CS-grid: no longer loosing mass.
767    o exf & curvilinear-grid: no longer modify longitude xC & xG.
768    o pkg/ggl90: fix sloppy output and fix a bug
769    o pkg/seaice: added SEAICEuseEVPpickup parameter
770      - Set to false in order to start EVP solver with
771        non-EVP pickup files when using SEAICEuseEVP
772      - fix sign error in diffusion in seaice_calc_rhs
773    
774    checkpoint58h_post
775    * Modifications for bottom topography control
776      o replace hFacC by _hFacC at various places
777      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
778      o add non-self-adjoint cg2d_nsa
779      o update autodiff support routines
780      o re-initialise hfac after ctrl_depth_ini
781      o works for 5x5 box, doesnt work for global_ocean.90x40x15
782    * Adding verification for 5x5 box (4-layer) bottom topography control
783    
784    checkpoint58g_post
785    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
786       used for mean seasonal cycle, mean diurnal cycle); add an example
787       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
788    o pkg/ggl90:
789      - add parameter (minimum surface kinetic energy)
790      - fix bug (avoiding division by zero)
791    o couple pkg/thsice to pkg/seaice:
792      - modify advection in seaice to accomodate new scalar fields to be advected
793      - only muliDimAdection scheme work with seaice/thsice
794      - mapping of thsice-variables to seaice-variables, back and forth
795      - does not break the verification experiments, but does not give the
796        desired results either
797    o pkg/seaice
798      - make (default) second order advection a bit less confusing?
799    
800    checkpoint58f_post
801    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
802      to pkg/seaice):
803      - new routines thsice_map_exf and thsice_get_exf provide the interface
804      - add an additional formal parameter to thsice_solve4temp
805    o pkg/exf:
806      - add new fields wspeed, snowprecip (to be able to couple to thsice)
807      - correct Stefan-Boltzmann constant
808      - new parameter for longwave surface emittance
809      - separate some stuff from exf_bulkformulae into new routines  
810        exf_radiation, exf_wind
811      - add new parameters and constants: longwave emissivity for ocean, ice
812        and snow, evaporation parameters over ice
813      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
814        either wind from stress or stress from wind
815    o pkg/thSIce:
816    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
817    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
818       and THSICE_CALC_THICKN
819    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
820    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
821      to make debugging easier.
822    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
823    o pkg/bulk_force:
824      - clean-up comments and parameters ;
825      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
826    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
827      generate new output for test-experiment: aim.5l_cs.thSI
828    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
829      testreport accordingly
830    
831    checkpoint58e_post
832    o SEAICE_CGRID adjoint done
833    o R_STAR adjoint implemented.
834      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
835      * need to sort out init. of h0facc, etc.
836    o Make pkg/profile fully independent of ecco,cost, etc. stuff
837      to be able to use it in pure forward.
838    
839    checkpoint58d_post
840    o upgrade simple test-experiment to tutorial example:
841     step.1: duplicate the experiment and (step.2) will remove the old copy.
842      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
843      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
844      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
845      tutorial_global_oce_biogeo    <- copy of dic_example
846      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
847      tutorial_plume_on_slope       <- copy of plume_on_slope
848      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
849      tutorial_global_oce_optim     <- empty for now (David ?)
850      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
851     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
852    o correct a sign problem in cost_scat.F
853    o obcs and ptracers: fix boundary conditions for advections schemes
854      with larger stencil
855    o thsice adjoint: start
856    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
857      completeness
858    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
859      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
860    o ptracers adjoint:
861      * avoid extensive recomputatations
862      * fix missing re-init. of gptr (missed by TAF)
863    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
864      me to turn off the excessive output to STDOUT that this package produces
865    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
866      and add those terms in Vector-Invariant formulation.
867    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
868      if the control period (xx_hfluxperiod etc) is 0
869    o in profiles pkg, clean routines and fix details
870    o in ecco pkg, reading ssh data:
871      fix problem in case the model does not start at iter0=0
872    o fix mnc-pickup/restart for ptracers
873    o new package prifiles:
874      code to compute profile-based cost by Gael Forget
875      (modifs in ecco, ctrl, autodiff)
876    o Benign bug fix in initialization (spotted by M. Mazloff) of
877      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
878    
879    checkpoint58c_post
880    o adjoint: finish NLFS adjoint and provide reference output in
881      verification/global_ocean.90x40x15/results_ad_nlfs
882    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
883      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
884      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
885      with SEAICE_CGRID defined.
886    o move calendarDumps from "data" to "data.cal" and clean-up the code
887      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
888    o add useEXF & useCAL flags (for now, set in hard-coded way)
889    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
890      (were missing in NH mode, and wrong in quasihydrostatic mode).
891      waiting for Chris updated version of calc_gw to add those CALLs.
892    o fix bug in quasihydrostatic S/R ;
893      add a test for this option: global_ocean.90x40x15.qshyd
894    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
895      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
896    o add on/off flag useOffLine for package OFFLINE
897    o seaice:
898      - modify advection so that it works also on the C-grid
899      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
900        problem in multi-tile runs with C-grid
901      - add flags for clipping ice velocities and/or masking solver forcing
902      - fix drag (ocean on ice) formulation and a bug that caused noise in the
903        C-grid solver
904      - added a few comments to seaice_diffusion.F
905      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
906        are now exclusive)
907      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
908        required re-ordering the code a little:
909       + make DAIRN global variable (defined in SEAICE)
910       + move computation of the viscosities eta and zeta into a new separate
911         routine (because I need to recompute them in seaice_ocean_stress.F)
912    
913    checkpoint58b_post
914    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
915      update output.txt of exp. aim.5l_cs.thSI
916    o various mnc cleanups and improvements:
917      + shrink lookup tables by factor of ~4
918      + better error reporting when running out of lookup space
919      + able to handle longer path/file names (up to 500 chars)
920    o adjoint:
921      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
922      - TBD: "hidden" mom_vecinv recomp. in dynamics
923    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
924     (allow to differentiate between forcing components using new integer flags:
925      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
926     and add new flag to put Dissipation tendency out of Adams-Bashforth.
927    o ecco
928      - enable trend removal from SSH anomaly obs.
929    o adjoint
930      - a fix for PmEpR when #undef EXACT_CONSERV
931      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
932      - try to fix "hidden" recomp. in forward_step for NLFS
933        (NLFS seems broken sometimes after I checked it in)
934    o seaice:
935     - add c-grid version of the dynamic solver:
936       + three new routines that are the c-grid substitute lsr, dynsolver
937         and ostres
938       + put a few fields that were local to dynsolver into global common
939         blocks, so that I can move the computation of stresses etc into
940         seaice_lsr (saves coding but may break the adjoint).
941     - replace more hardwired parameters by runtime parameters
942     - add ice masks that mask the rhs of the implicit solvers where there
943       is no ice (commented out in seaice_dynsolver, because i am not sure
944       if this works properly), eventually this should replace the clipping
945       of ice velocities in seaice_dynsolver to +/-40cm/s.
946    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
947      include it only where its needed
948    o move balancing of fluxes before the call of external_forcing_surf
949    o seaice:
950      - correct units of turning angles (now they are really in degrees)
951      - move computation of GWATX/Y out of main routine into dynsolver
952      - initialize GWATX/Y in seaice_init
953    o Apply mask on Fresh-Water flux (needed for SSH forcing).
954      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
955    o seaice: add runtime flags for turning angles (default to zero)
956    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
957      and trend from exf forcing and ctrl control adjustments
958    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
959      (since checkpoint57x_post)
960    o change the default rotation period to 86164.s = the Earth rotation
961    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
962      and based on a reference stratification. Tested within hs94.cs-32x32x5.
963    o seaice advection: add code for choosing between the default (2nd order
964      central differences) and multiDim advection schemes provided by
965      pkg/generic_advdiff
966    o seaice:
967      - removed all references to SEAICE_GRID.h fields from
968        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
969        (cubed-sphere configuration will change a little)
970      - grid computations in seaice_init are obsolete now.
971      - cleaned up code a little so that is easier to read (hopefully).
972      - added new (better?) discretizations of default advection and diffusion
973        (turn on with SEAICEuseFluxForm)
974      - replace 1 in 3d global fields by kSurface in growth.F
975      
976    checkpoint58a_post
977    o seaice:
978      - bug fix in advect.F
979    o shelfice:
980      - separate shelfice load anomaly from pload (breaks with time
981        dependent forcing), => introduce constant field shelficeLoadAnomaly.
982        Its default is 0., but it may be computed more cleverly from (unknown)
983        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
984        done offline. A good approximation of the pressure load anomaly is
985        necessary to avoid large initial adjustment processes underneath
986        deep-reaching shelfice.
987      - small fix in ISOMIP shelfice_thermodynamics
988      - add more sophisticated thermodynamics of Hellmer (1989), this is
989        now the default
990      - give a few constants more intuitive names
991    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
992      if bulk formulae are used in long integration (especially EmPmR). Turn
993      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
994      if balancePrintMean, the imbalance that is substracted is printed to
995      STDOUT.
996    o fix bug (typo) in obcs_apply_eta.F
997    o add a new package shelfice which enables us to model the circulation
998      underneath shelf-ice with draughts of hundreds of meters.
999     - works
1000     - to do: + include improved thermodynamics
1001              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1002                instead of new field kTopC
1003              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1004                instead of new field R_shelfIce and new code in ini_depth.F
1005                and ini_mask_etc.F?
1006              + adjust vertical mixing schemes?
1007    o seaice pkg:
1008     - add a cpp-flag to include a simple formula for a salinity dependent
1009       freezing point of sea water at the surface
1010     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1011       meridional stresses are now different (and hopefully correct)
1012    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1013       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1014       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1015    o pkg/diagnostics: add options and parameters for regional-statistics
1016       diagnostics ; define regions by reading a region-mask from a file
1017       (might add other options later)
1018    o pkg/bulk_force:
1019     - add option and parameters to use AIM surface-flux formulae.
1020     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1021       others forcing fields (defined in PARM05, parameter file "data") are loaded
1022       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1023     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1024     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1025     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1026       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1027     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1028    
1029    checkpoint58
1030    o add "--embed-source" option to genmake2 which, when the supporting
1031      tools can be compiled (as determined by genmake2) will turn on the
1032      embed_files package which then embeds the entire MITgcm source code
1033      (*.[fFhc] + Makefile) used for the build within the executable
1034      - requested by CNH but off by default
1035      - adds a paltry <9MB to the mitgcmuv executable in most cases
1036      - only writes the output when useEMBEDSRC in eedata is true
1037    o clean up 3-dim. relaxation codes:
1038      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1039      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1040      * Thanks to Tom Haine for testing!
1041    
1042    checkpoint57z_post
1043    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1044      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1045    o fix the pickup behavior for obcs in combination with ptracers
1046    o fix a bug in ptracers_external_fields_load
1047    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1048      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1049    o transfered surface NH pressure to eta field (if exactConserv).
1050    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1051         and update lab_sea output.txt file.
1052    o completing 3-dim. relaxation code: additional term
1053         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1054      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1055      * At compile time, in "EXF_OPTIONS.h" set
1056          #define  ALLOW_CLIMTEMP_RELAXATION
1057          #define  ALLOW_CLIMSALT_RELAXATION
1058      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1059          tauThetaClimRelax3Dim = 15552000.0,
1060          tauSaltClimRelax3Dim  = 15552000.0,
1061      * 3 cases:
1062          1) Use a constant-in-time 3-dim. field
1063          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1064          3) Real-time relax. to time-evolving prescribed field
1065    o Adding Laplacian-type smoothness constraint on
1066      initial and boundary (forcing) controls (ic, bc)
1067      * enable at compile-time via
1068        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1069      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1070      * Absolute scale somewhat unclear so far
1071      * no area weighting was included since no other cost term does so far
1072    
1073    checkpoint57y_post
1074    First step for a NLFS adjoint
1075    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1076    o new init. routines for calc_r_star, calc_surf_dr
1077    o still need to deal with ini_masks_etc
1078    o testreport seemed happy
1079    checkpoint57y_pre
1080    
1081    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1082    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1083    o add new offset feature to offline pkg (plus minor cleanup)
1084    o cfc fixes for final year of integration
1085    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1086      be in GCHEM_OPTIONS).
1087    
1088    checkpoint57x_post
1089    o fix testreport Pb in multiple test experiment.
1090    o cleanup our namelist syntax in verification:
1091      - make it more F95 standards compliant (some work still needed)
1092      - allows the vast majority of our tests to work with gfortran
1093    o Non-Hydrostatic:
1094     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1095     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1096    o Allow to apply AB on T,S rather than on AB(gT,gS):
1097     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1098     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1099       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1100     - need a "clever" read_pickup to restart from the other AB formulation
1101    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1102    o remove some unused variables (reduces number of compiler warnings)
1103    o adjoint
1104      * Disable useVariableViscosity for adjoint for time being
1105        (there are a number of extensive recomputations)
1106      * Initialize certain variables needed for adjoint
1107    
1108    checkpoint57w_post
1109    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1110                 fix the singleCpuIO RS version of MDSWRITEFIELD
1111       and add a WARNING if using globalFiles=T with multi-processors.
1112    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1113      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1114    o tracer advection scheme:
1115      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1116       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1117       was not very convenient).
1118      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1119       (further tests needed for the implicit DST & Flux-Limiter schemes).
1120    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1121      and sRef for convenience, handy, when you want to initialize
1122      ptracers in a large domain with a constant non-zero value. Also,
1123      untangle ptracers_init.F a little.
1124    
1125    checkpoint57v_post
1126    o change dome exp. to use variable viscosity in side-drag terms.
1127    o remove all the files from the cfc_offline test since they are now
1128      incorporated into tutorial_cfc_offline which has been producing
1129      identical results for a few days of testing
1130    o add new parameter: sideDragFactor to enable half-slip-side BC
1131      and change side-drag S/R to use viscosity from mom_calc_visc
1132      (can switch back by setting sideDragFactor=0.); affects results at
1133      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1134       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1135    o vorticity & strain are now computed without masking, to account for
1136      no-slip-side BC in variable viscosity calculation ; mask is applied
1137      anyway later on, before computing advection/coriolis terms.
1138    o modify exp4 to test new obcs support for reading from external files
1139      and for passive tracers
1140    o fix behavior of ptracers_monitor when monitor output is written to a
1141      netcdf-file; still not independent of monitor.F (writes in the same
1142      file).
1143    o change default value of tRef (put a uniform, meaningful value for ocean
1144      & atmos) and initialize sRef (was missing, as Martin mentioned).
1145    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1146      to be proportional to enstrophy dissipation length.  Thus,
1147       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1148      This is now consistent with Smagorinsky and with the manual.
1149    
1150    checkpoint57u_post
1151    o OBCS and PTRACERS: add open boundary support for passive tracers
1152      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1153        OB-values from file; this is not different from the way theta and salinity
1154        are treated
1155      - however, Orlanski-radiation conditions are not supported, and the model
1156        will stop if you use pTracers and Orlanski at the same time.
1157      - beefed up the rountine obcs_external_fields_load: now only those open
1158        boundary values are overwritten with values from files for which there
1159        are really files, otherwise the OB-fields remain untouched. This makes
1160        it possible to use different OBs at different ends of the domain (as
1161        with EXF)
1162    o reduce number of exch calls in shap_filt (s2).
1163    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1164      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1165    
1166    checkpoint57t_post
1167    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1168    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1169      same truncation, independent of the face number: affects affects several
1170      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1171    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1172      note that biharmonic viscosity + no-slip was not tested in any experiment.
1173    o fix bug in non-linear free-surf side-drag ; generate new output for
1174      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1175    o make mnc honor the writeBinaryPrec flag for most kinds of output
1176    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1177    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1178      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1179    o add brackets in multi-terms sum to get same truncation, independent of
1180      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1181      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1182    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1183      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1184      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1185      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1186      Suggested values of viscosity parameters found in mom_calc_visc.
1187      Many new viscosity diagnostics available.
1188    
1189    checkpoint57s_post
1190    o Add clearing-house for viscosity calculations, mom_calc_visc and
1191      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1192      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1193      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1194      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1195      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1196      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1197      ViscAhStrain and viscAhTension are now retired.
1198    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1199    o In response to JMC's bug report, genmake2 now ignores any soft-links
1200      that it finds in the *current* directory when searching for files.
1201      Soft-links found in any other source directories will still work as
1202      they did before.
1203    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1204      a C routine to unlimit the stack size
1205    o mnc-ify pkg/aim snapshot vars
1206    o mnc-ify pkg/land as requested by Daniel
1207    o various changes to mnc including:
1208      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1209      - output can now be grouped so that all files within a group
1210          change the ITER portion of their names in lock-step together
1211      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1212          and works with both EXCH1 and EXCH2 (but needs more testing)
1213      - writing works for all verification test cases w/ g77 on Linux
1214    
1215    checkpoint57r_post
1216    o make MNC variable initialization happen earlier
1217    o add diagnostics for (almost) each term of the momentum Eq.
1218    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1219    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1220    o remove MINIMAL_TAVE_OUTPUT option ;
1221      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1222    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1223      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1224    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1225    o add time-dependent SST, SSS control
1226    o cost terms in ecco/ modularized (new cost_generic.F)
1227    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1228    o new infrastructure for seaice model vs. obs misfits in seaice/
1229      * driver from the_main_loop.F is seaice_cost_driver.F
1230      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1231      * gradient check in Exp. 6a of natl_box_adjoint/
1232    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1233      (see README file)
1234    
1235    checkpoint57q_post
1236    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1237    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1238      - bug was reported by Jean-Michel and Ian Fenty
1239    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1240      update exp. cpl_aim+ocn output.
1241    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1242      Needed for high-res. runs with large global files
1243      to be able to limit tapelev size
1244    o Changed some tests for adjoint:
1245      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1246      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1247      * global_ocean.90x40x15/ back to default 3-level checkpointing
1248    o Modifications to enable scripted COMMON to MODULE conversion
1249      * verification/OpenAD/code/ has necessary scripts and description;
1250      * converts, compiles and runs successfully;
1251    
1252    checkpoint57p_post
1253    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1254    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1255      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1256    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1257    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1258      (was already the case for dissipation with mom_vecinv,
1259       and also the case for grad.PhiHyd when staggered-timeStep)
1260      This will allow to put dissipation out-off the AB time-stepping.
1261     Unfortunately, affects truncation error. Update output of exp. that "fails"
1262      (cg2d matching number) and leave the others for later: front_relax(10),
1263      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1264      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1265    
1266    checkpoint57o_post
1267    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1268      (2) its ready to be documented during the 20050801 DocFest
1269    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1270      for ideal_2D_oce and lab_sea on linux_ia32_g77
1271    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1272      in global1x1_tot/code_seaice_adj to access indices 32, 33
1273      (worth another tag)
1274    
1275    checkpoint57n_post
1276    o adding precip control xx_precip 32
1277    o adding swflux control xx_swflux 33
1278    o Replacing 10 forcing penalty cost routines by 1 generic.
1279    o Implementing partitioning in time-mean and variable adjustment
1280      for atmos. state.
1281    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1282    o in natl_box_adjoint:
1283      * updated exp 1 to 10
1284        (but does not have time-mean vs. variable split results yet)
1285    o updated global1x1/*_seaice_adj/
1286      to incorporate latest changes
1287    o enable useSingleCpuIO for mdsio vector routines
1288      (applies in particular to tapelev I/O)
1289    o removed inefficient K-loop in all active_file*control*.F
1290    
1291    checkpoint57m_post
1292    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1293      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1294    o pkg/exch2: filling of face-corner halo regions is optional
1295      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1296    
1297    checkpoint57l_post
1298     tag before updating tutorials (pre-release-2)
1299    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1300       for output and interpolation of input fields onto model grid)
1301    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1302       Affects results of exp. rotating_tank ; update output.txt.
1303    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1304          and taking the square quantity and/or using a fraction-weight field.
1305    o fix aim_diagnostics_init.F mate numbers.
1306    o add mnc output capability to diagnostics/diagstat and update
1307      our cvsignore files for the ACSII output generated
1308    
1309    checkpoint57k_post
1310    o lab_sea now uses diagnostics package and provides a suite of
1311      new EXF diagnostics output.
1312    
1313    checkpoint57j_post
1314    o exf
1315      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1316        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1317        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1318      * extended diagnostics output
1319        - now includes all EXF variables
1320        - hs, hl moved to common block
1321        - separate S/R for diagnostics, called after ctrl vector is added
1322        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1323        - EXFqnet contains true Qnet (i.e. includes qsw)
1324      * updated verif. lab_sea, global_with_exf
1325      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1326        to ensure that diagnostics sees a true EXFqnet
1327    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1328    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1329      several times with different frequencies.
1330    o mnc-ify the thsice package as requested by Daniel Enderton
1331      - the monitor--MNC output needs work
1332      - many attributes need to be added (most are currently blank)
1333    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1334      - many attributes need to be added (most are currently blank)
1335    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1336    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1337    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1338      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1339         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1340    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1341     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1342    
1343    checkpoint57i_post
1344    o Diagnostics package was changed: diagnostic allocation is now deactivated
1345      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1346    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1347      add 1rst Order upwind vertical Shear.
1348    o add a quick fix for A/B checkpointing in OFFLINE mode
1349    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1350      end-run around the C/Fortran linking horror in eesup/src/timers.F
1351    o added pkg/runclock: allows user to terminate run based on wall clock
1352    o added non-hydrostatic scaling parameter: nh_am2
1353    o pkg/my82: futile attempt to make results compiler-independent by adding
1354      some "_d 0", etc. no effect.
1355    o for mnc output, fill the 'T' coordinate var with myTime and create a
1356      separate 'iter' variable for iteration count
1357    o pkg/diagnostics:
1358      add new capability: output of Global/Regional & per-level statistics ;
1359      tested against monitor output (including land & thSIce) on various exp.
1360    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1361    
1362    checkpoint57h_done
1363      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1364      data.diagnostics, data.gchem, data.ptracers) is done.
1365    
1366    o pkg/diagnostics: prepare for Global/Regional statistics.
1367      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1368    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1369      and rename it: DIFFERENT_MULTIPLE
1370    
1371    checkpoint57h_post
1372    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1373    o pkg/diagnostics: change output frequency, now in seconds (instead
1374      of Nb of iterations). This requires to change data.diagnostics.
1375    checkpoint57h_pre
1376    
1377    o in mnc, let the user create the output dir if both mnc_outdir_date
1378      and mnc_outdir_num are false
1379    o add fflags() to pkg/diagnostics which allows one to specify, on a
1380      per-file basis, the file precision [default behavior is unchanged]
1381    o added diagnostics to pkg/kpp, including computation of mixed layer
1382      depth based on a temperature/density criterion
1383    o updated verification/natl_box to test the new pkg/kpp diagnostics
1384    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1385    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1386    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1387      not mnc -- this mistake was found by JMC and is now corrected
1388    
1389    checkpoint57g_post
1390    o add Adams-Bashforth 3rd Order time stepping:
1391      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1392      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1393    checkpoint57g_pre
1394    
1395    o make lambda[Theta,Salt]ClimRelax spatially varying
1396      (default remains spatially uniform constant based on tau)
1397    o added new control variables
1398      * init. uVel, vVel, etanN
1399      * lambda[Theta,Salt]ClimRelax
1400    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1401      (suggested by G. Forget)
1402    
1403    checkpoint57f_post
1404    o add parameter "baseTime" = model base time = time at iteration zero
1405      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1406      account for baseTime shift
1407    o move Coriolis arrays from PARAMS.h to GRID.h
1408    checkpoint57f_pre
1409    
1410    o mnc-ifying the seaice package
1411    o introduced an alternative length scale calculation for use in the limiting
1412      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1413    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1414    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1415      as well as grad(vort3).  Made it compatible with both approximate form
1416      for the cubed sphere and full form of these gradients.  Added flag
1417      useFullLeith to select between approximate and full form.  
1418    o add "d0" in getcon.F to reduce differences between compilers/platforms
1419      update output.txt of exp. fizhi-gridalt-hs
1420    o change port_rand funtion to allow to set the seed.
1421    o fix obscure MNC bug involving conversion between reals and integers
1422      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1423        new version is now more standards-compliant
1424    o adjoint-related modifications
1425      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1426      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1427      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1428    
1429    checkpoint57e_post
1430    o Adding eddy stress controls a la Ferreira et al.
1431    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1432    
1433    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1434      update output.txt of exp. fizhi-gridalt-hs
1435    o add more "Z" dimensions and associated coordinate vars to MNC
1436    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1437    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1438      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1439      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1440      months and years.  Requires pkg/cal.
1441    o diagnostics: add pickup functionality
1442      - off by default for backwards compatibility
1443      - current version only uses MDSIO -- MNC will be added
1444    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1445    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1446    
1447    checkpoint57d_post
1448    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1449    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1450      output from the diagnostics package
1451    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1452    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1453      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1454    o add coordinate variables to the MNC output from the diagnostics package
1455    o change MNC-flags default value: true when useMNC=TRUE
1456    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1457      the ability (off by default) to read the grid information using MNC
1458    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1459    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1460    o do snap-shot diagnostics at the middle of the time-interval (instead of
1461      at the end).
1462    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1463      new test for AIM with thSIce + slab-ocean
1464    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1465    o move state variable diagnostics to the beginning of the time step ;
1466      (note: still needs some work specially for snap-shot diagnostics)
1467      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1468    
1469    checkpoint57c_post
1470    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1471    o generate new output.txt files on faulks with g77 & the new -ieee option
1472    checkpoint57c_pre
1473    
1474    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1475      update output.txt of exp. global_ocean.90x40x15
1476    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1477      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1478    o add saltFlux(+File) forcing capability with periodicExternalForcing
1479    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1480    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1481    o improvements for the MNC output from DIAGNOSTICS:
1482      - correct handling of the unlimitied dimension
1483      - all dims now have associated coordinate variables
1484      - variables located at U, V, and Corner ("Z") points are now written
1485        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1486        *all* data points are output
1487    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1488    o added pkg/seaice/seaice_monitor.F
1489    o mdsio_readfield.F can now read files visible only to master MPI process.
1490    o pkg/seaice: some test code for ice-modified ocean stress
1491    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1492      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1493      spurious negative numbers for precipitation and humidity.  Will cause
1494      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1495    o pkg/ctrl/
1496      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1497        May be enabled via doPackDiag
1498      *  introduce z-scaling of
1499         + gradient (doZscalePack) and
1500         + control (doZscaleUnpack)
1501    o pkg/mdsio/
1502      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1503      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1504    
1505    checkpoint57b_post
1506    o simplify options in diagnostics_fill arguments (remove weird combinations)
1507    o fix MNC coordinate variables so that they now contain per-face index
1508      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1509      general, EXCH2 grids are only aligned to a "local" coordinate system
1510    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1511    o Implement instantaneous output within pkg diagnostics:
1512      setting a negative frequency in data.diagnostics produces
1513     "snap-shot" output (as opposed to time-average if freq > 0)
1514    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1515      NOTE: change ptracer diagnostics name: use 2 characters to work with
1516            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1517    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1518      becomes the coordinate variable for the 'T' dimension
1519    o add CF-style coordinate variables to MNC
1520      - just a first cut:  numbers are meaningless on the cubesphere and
1521        missing along the T axis but otherwise it works!
1522    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1523    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1524    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1525      this is based directly on what the model compute, so that the content of
1526      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1527    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1528    o clean up build options files for SunOS, in particular
1529      - remove -traditional from xmakedepend
1530      - change -xarch=v9 to -xarch=native for f77
1531      - restore use of make (not gmake)
1532      - add CC=gcc if using g77
1533    o changes per discussion of AM, JMC, & EH3 today:
1534      - move redundant "grid" variables out of "state" -- in preparation of
1535        creating proper CF-style coordinate variables and in recognition
1536        that any/all grid variables can be easily copied (eg. w/NCO) from
1537        the grid files into any of the other NetCDF files
1538      - *always* output grid variables with MDSIO (this will eventually be
1539        changed)
1540      - output MNC grid file if useMNC is true
1541    o every instance of _END_MASTER() has been found and replaced with
1542      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1543      preprocessors
1544    o re-arrange diagnostics pkg initialisation:
1545     - allow each package to extend the available diagnostics list
1546     - add some checking and fix small problems (multi-threaded, ...)
1547     - new S/R diagnostics_fill (replace fill_diagnostics):
1548       look through the short list of active diag. (instead of the long list)
1549       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1550    
1551    checkpoint57a_post
1552    o this set of changes restores TAMC compatibility
1553      tested for global_ocean.90x40x15 adjoint on trough
1554      (what a pain)
1555    
1556    checkpoint57a_pre
1557    o some modifs in tools/build_options for sunos
1558    o call ctrl_pack for ctrl at end for optimcycle=0
1559    
1560    checkpoint57
1561    o add horizontal bi-harmonic viscosity for vertical velocity
1562      - new parameter viscA4W (defaults to viscA4)
1563      - affects only non-hydrostatic code
1564      - to be done: no-slip lateral boundary conditions
1565    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1566    o implement Implicit Vertical advection for pTracers
1567    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1568      (implemented also for implicit vertical diffusion & advection)
1569    o OBCS: extend application of tracer open boundary conditions
1570      to a strip beyond the boundary of width Olx/Oly
1571    o add call monitor to TAF set of required calls (flow directives)
1572      and include in natl_box_adjoint
1573    o untangle a few ifdefs related to cost, ctrl, autodiff
1574      untangel a few ALLOW_ECCO_OPTIMIZATION
1575    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1576      (theta2, salt2 in ecco_cost_weights)
1577    
1578    checkpoint56c_post
1579    o OBCS as control variables
1580      - update ctrl_ad_diff.list, obcs_ad_diff.list
1581      - remove balance of obcs controls from default
1582      - fix index bug nobcs in ctrl_init
1583      - fix dummy fields filen in ctrl_pack
1584      - add dummy weights for obcs
1585    o lsopt: comment out fort.94 output
1586    o optim:
1587      - remove unnecessary header files
1588      - adjusted namelists
1589      - add xerbla.F to Makefile
1590    o exf:
1591      - multiple modifications of exf_check_range
1592      - unit change in exf_init_runoff from [m/year] to [m/s]
1593    o mdsio:
1594      - i/o-vector change debugLevel from debLevA to debLevB
1595    
1596    checkpoint56b_post
1597    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1598      is called from DO_THE_MODEL_IO
1599      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1600      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1601      - clean up PTRACERS_WRITE_TIMEAVE a little
1602    o add another verification experiment that tests both the cfc-pkg and
1603      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1604      reactive tendencies treated inline with regular timestepping
1605    o testreport previously did a lousy job of comparing small numbers, so
1606      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1607      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1608      testreport.
1609    o ptracers_monitor: bug fix for MPI
1610    
1611    checkpoint56a_post
1612    o GCHEM: finish reorganizating the package
1613      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1614        (introduces another 3D-array for each passive tracer, but only if
1615        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1616        gchemTendency is not needed because the timestep is done separately)
1617      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1618      - GCHEM is now---more or less cleanly---separate from PTRACERS
1619      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1620        so clear to me how that should be done in a general way.
1621    o CFC: improve formatting of output in CFC_ATMOS
1622    o PTRACERS:
1623      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1624        that ALL experiments with ptracers enable can be checked. This makes
1625        GCHEM_MONITOR obsolete.
1626      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1627        monitorFreq
1628      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1629    o add PTRACERS (PTR0[1-5]) to testreport output
1630    o exf_check_range:
1631      * default changed to .TRUE.
1632      * will check values for niter0 if debLevA, every timestep if debLevB
1633      * STOP in exf_check_range if 'out of range'
1634      * range chosen generous to allow for potential extema
1635      TBD: a version with stricter range
1636           permitted range would be runtime parameters
1637    o GMredi:
1638      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1639      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1640      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1641    o GCHEM:
1642      - move call to GCHEM_FORCING_SEP, so that it is now called before
1643        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1644      - introduced a useGCHEM runtime flag and applied it everywhere.
1645      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1646        this flag is now only visible within GCHEM-pkg routines.
1647      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1648        be replaced by a 3D array that is computed before thermodynamics; for
1649        this, the tracer ID iTracer had to be included into the parameter list
1650        of ptracers_forcing
1651      - set up forward_step to call gchem_forcing, that will replace
1652        gchem_forcing_int in ptracers_forcing
1653      - cleaning up
1654    o small cleaning of exch2: remove files that are also in eesupp/src
1655    
1656    checkpoint56
1657    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1658    o mnc: cleanup "full" files--fixes out-of-memory problem
1659    o ECCO-GODAE
1660      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1661      * fully merged and updated from SIO code
1662        windstress sign change affects
1663        - exf_inscal_[u/v]stress
1664        - sign of xx_tau[u/v] adjustments
1665        - signs in cost_scat
1666      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1667      * natl_box_adjoint updated and compressed
1668      * 2-level checkpoint switch added
1669        (tested in EXP. 1 of natl_box_adjoint)
1670      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1671    o SVD
1672      * first complete, non-hacked version for SVD calculations
1673      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1674        performed via direct access files admtlm_vector.it????
1675        (via ctrl_[un]pack)
1676      * optimcycle is used for ARPACK iteration counter
1677        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1678      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1679        and add linear transforms where necessary
1680      * controls are initial/final SST, SSS (can be extended; need to check
1681        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1682    o mdsio: filename info to both stderr, stdout
1683    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1684      from sign change
1685    
1686    checkpoint55j_post
1687    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1688      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1689    o add consistent build directories and .cvsignore files to verification
1690    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1691    o make all subroutines 30 or less characters in length for certain older
1692      compilers to work (a thorough search only turns up two routines in
1693      pkg/ptracers)
1694    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1695      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1696    
1697    checkpoint55i_post
1698    o change arrays for total vertical diffusivity (2.D if explicit,
1699      3.D if implicit) ; each ptracer uses its own background value.
1700    o added mnc/NetCDF output capability to ocn_compon_interf
1701      - added bits to verification/cpl_aim+ocn so that it can run on
1702        ITRDA and other clusters without the mpirun "-wd" option
1703    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1704      configuration
1705    o give MNC the ability to create additional files rather than
1706      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1707      - the default is just less than 2GB which is a practical limit
1708        on many systems
1709    o Compute the non-local term using either KPP vertical diffusivity (=default)
1710       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1711    
1712    checkpoint55h_post
1713    o add verification test "vermix"
1714    o remove all the *_ioinc flags and replace with the single global
1715      outputTypesInclusive flag
1716    o allow to set a vertical profile of vertical diffusivity for T & S
1717    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1718    o useMNC moved from data.mnc to data.pkg
1719    
1720    checkpoint55g_post
1721    o Renaming carbon AD experiments to comply with testreport conventions
1722    o Updating adjoint of Held-Suarez hs94.1x64x5
1723    o Fixing directives for non-ECCO forward_step, after ECCO directives
1724      have been fixed to avoid recomp. of do_oceanic_phys
1725      Works well for global_ocean.90x40x15,
1726      but recomp. issue remains for carbon
1727    o Updating adjoint output for natl_box_adjoint after
1728      pkg/ecco has been modified (see taga c55d_post)
1729    
1730    checkpoint55f_post
1731    o rename to timeave_init_fixed
1732    
1733    checkpoint55e_post
1734    o some delicate re-shuffle of store directives to avoid one
1735      extra call of do_oceanic_physics
1736      affects ecco_the_main_loop.F, do_oceanic_physics.F
1737      checkpoint_lev1_directives.h
1738    o NB: this may break global_ocean adjoint temporarily,
1739      but it is clear how to fix it. Will do later, need this now.
1740    
1741    checkpoint55d_post
1742    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1743    o ecco_cost_weights is modified to 1x1 runs
1744    o modifs to allow observations to be read in as
1745      single file or yearly files
1746    o enable to read exf forcing fields as either
1747      single file or yearly files (flag useExfYearlyFields)
1748    checkpoint55d_pre
1749    
1750    o switch between 2-level and 3-level checkpointing
1751    o add ability of MNC to write local and "partial" (eg. 2D slices where
1752      the full 3D field is never actually stored) arrays to NetCDF files
1753      with the correct (that is, the complete multi-dimensional) set of
1754      array indicies
1755      - used in mom_vecinv() to write the diagFreq output
1756      - tested (demonstrated) in verification/aim.5l_cs
1757    o further mnc-ification
1758      - add verification/lab_sea to the list with mnc setups
1759      - fix undefined mnc v-names in cd_code
1760      - add kpp to mnc output (both snapshot and timeave)
1761    o non-hydrostatic code
1762      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1763        in calc_gw.F
1764      - defaults to viscAh
1765      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1766        friction or Leith) in non-hydrostatic mode, as long as there is
1767        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1768    o pkg/cost
1769      extend simple cost functions to treat time mean quantities
1770      (T,U,V) via cost_accumulate_state from cost_tile
1771    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1772        be 2 times larger than the minimum size the advection scheme requires.
1773        now get a perfect conservation of salt in advect_cs test-exp (updated)
1774    o GGL90 (Gaspar's TKE mixed layer)
1775      - add horizontal diffusion of TKE, requires exchanges in
1776        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1777        default. In OPA there is no horizontal diffusion of TKE but the
1778        mixing coefficients are computed from a horizontal average of TKE of
1779        6 points or so. I think that diffusion has a little more physical
1780        justification.
1781      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1782        was in vain)
1783      - mask tke-variable in ggl90_init
1784    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1785    o fix biharmonic diffusion on CS-grid.
1786    o more obcs stuff
1787      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1788        for reading boundary values. This routine is called from
1789        obcs_prescribe_read
1790      - updated obcs_check
1791      - changed sponge layer relaxation parameter units for days to seconds
1792      - turned off sponge layer by default
1793      - changed argument list of OBCS_CALC to myTime+deltaTclock
1794      - fixed about 35 bugs in obcs_external_fields_load
1795    
1796    checkpoint55c_post
1797    o obcs stuff
1798      - new runtime flags useOBCSprescribe, useOBCSbalance
1799      - re-arranged obcs_calc
1800      - moved exf_getobcs to obcs_prescibe_read
1801        obcs_prescibe_read is called after ORLANSKI stuff
1802        and independent of it (executable can contain all).
1803      - updated obcs_check
1804      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1805        These may be necessary only if tangential velocities are
1806        prescribed at OB, not sure, needs testing.
1807    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1808      which simplifies the calls and passes the ifc check-bounds test
1809    
1810    checkpoint55b_post
1811    o add a 2D scalar, Z location, exchange_2 routine.
1812    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1813      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1814      affects advect_cs results (for the wrong reason): update output.txt
1815    o use a more standard discretization for biharmonic viscosity ;
1816     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1817      affects results of dome set-up: update output.txt
1818    o fix gad_advection.F (CubedSphere part), back to version 1.23
1819    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1820    
1821    checkpoint55a_post
1822    o merged code to
1823      * prescribe/read time-dependent open boundaries
1824        (works in conjunction with exf, cal)
1825      * sponge layer code for open boundaries
1826      * each boundary N/S/E/W now has its own CPP option
1827        (healthy for the adjoint)
1828    
1829    checkpoint55
1830    o up-to-date adjoint of previous breaks
1831      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1832      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1833      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1834      - carbon: * remove tr1-related adjoint verification
1835                * add ptracer as control variable
1836    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1837      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1838    
1839    checkpoint54f_post
1840    o in verification/carbin/ remove experiment related to
1841      ALLOW_PASSIVE_TRACER (array tr1 etc)
1842      code_ad/ input_ad/ results_ad
1843    
1844    o add two new packages
1845      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1846        + subject to optimization (memory)
1847      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1848        + subject to reordering (many GOTOs in the original code)
1849        + so far opps is called for every (i,j) point, and then operates in
1850          the vertical; one may want to reorder the scheme in order operate in
1851          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1852          fields)
1853    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1854      - all verification tests compile and run with linux_ia32_g77
1855      - defaults are compatible with current input files--nothing
1856        should change if you were not previously using MNC
1857      - MNC output has been added in numerous places (eg. timeave)
1858        but there are still a few writes not yet do-able with MNC
1859        (this is in progress)
1860      - flags now allow for either/or/both use of MDSIO and MNC and
1861        documentation will soon follow
1862      - numerous small formatting cleanups for ProTeX
1863    o add version info (via BUILD_INFO.h) to MNC and stdout
1864    
1865    checkpoint54e_post
1866    o add two new packages
1867      - pp81 (Packanowski and Philander, 1981), Richardson number and
1868        stratification dependent mixing
1869      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1870      - these scheme operate in a similar manner as KPP (without ghat, of
1871        course), however there is only one diffusivity that is used for both
1872        temperature and salinity (and passive tracers)ç
1873    o add offline package
1874    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1875      provided by Stephanie Dutkiewicz
1876    o genmake2: add ability to search for C compilers and cleanup test output
1877      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1878    
1879    checkpoint54d_post
1880    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1881    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1882      leading to additional shift by 5 days each year of integration
1883       (i.e. leading to considerable offset over the years)
1884    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1885    o start with no AB and no initial filtering (staggerTimeStep):
1886      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1887    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1888      (external loading & cpl import/export stay in forward_step.F)
1889    o update coupling interface to work with new staggerTimeStep
1890    o change MDSIO ptracers_pickup.
1891    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1892    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1893    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1894    
1895    checkpoint54c_post
1896    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1897      this affects (truncation error) output.txt of test-exp:
1898       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1899    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1900    o change Qnet to always be the net heat flux, (+upward).
1901      affects (truncation error) output of natl_box exp.: updated
1902    o define the max number of passive tracers in PTRACERS_SIZE.h
1903    o start to test mnc routinely in exp0
1904    o add sea-ice loading (sIceLoad) as a new forcing field.
1905    
1906    checkpoint54b_post
1907    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1908       impressive on Altix and Opteron systems)
1909    o diagnostics can now write NetCDF files through the mnc package
1910    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1911    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1912    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1913      affects (truncation error) output of lab_sea & natl_box exp.: updated
1914    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1915    
1916    checkpoint54a_post
1917    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1918    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1919    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1920    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1921      + internal_wave (shift in writing cg2d_ini_res)
1922    checkpoint54a_pre
1923    
1924    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1925      - modified verification/lab_sea and natl_box_adjoint accordingly
1926    
1927    checkpoint54
1928    checkpoint53g_post
1929    o prepare splitting of thermodynamics: store convect.counter in common block
1930    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1931      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1932    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1933    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1934    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1935    o restore adjointability
1936    
1937    checkpoint53f_post
1938    o modifications that affect AIM experiment results (update output.txt):
1939      - no advection of S at top interface Nr (pkg/generic_advdiff)
1940      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1941    o AIM pkg:
1942      - include stability function into surf.Flux derivative relative to Tsurf
1943      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1944    
1945    checkpoint53e_post
1946    o merged cylindrical coord configuration
1947    o added rotating_tank experiment
1948    checkpoint53e_pre
1949    
1950    checkpoint53d_post
1951    o faulks upgraded: re-generate output.txt that have changed:
1952       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1953    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1954    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1955    o added Sadourny discretization of Coriolis
1956      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1957      - re-enabled use of omega3 (useAbsVorticity)
1958    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1959      vector-invariant equations
1960      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1961    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1962      hopefully without new bugs
1963      - still to do: biharmonic friction for non-hydrostatic w
1964    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1965    o regenerated output for global_ocean_ebm (using -ieee)
1966    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1967      of mom_common/
1968      - simple re-arrangement of instructions within computing loop
1969    checkpoint53d_pre
1970    
1971    checkpoint53c_post
1972    o new version of coupler for AIM+thSIce and Ocean models
1973     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1974     - land: change Evaporation of snow
1975     - aim with thSIce: fix bug in snow-precip.
1976    o changes to calc_gw.F
1977     - bug fix for w^2 term near the bottom boundary
1978     - (hopefully) improve the lateral slip boundary condtions for use with
1979        partial/looped cells
1980      - because the bug fix changes two verification experiments anyway (exp5
1981        and plume on slope), change the lateral boundary condition from half slip
1982        to the value of no_slip_sides
1983    o ebm package wasnt quite up to the parallel task. Fixed that.
1984    o Adjoint of EBM package + verification
1985      * TLM OK
1986      * ADM not sufficient accuracy yet (needs further testing)
1987    
1988    checkpoint53b_post
1989    o Commiting new energy balance model to repository
1990      * package is pkg/ebm
1991      * verif. is verification/global_ocean_ebm
1992      * references are in ebm_driver.F
1993    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1994    C        Global thermohaline circulation. Part I:
1995    C        Sensitivity to atmospheric moisture transport.
1996    C        J. Climate 12(1), 71-82
1997    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1998    C        Global thermohaline circulation. Part II:
1999    C        Sensitivity with interactive transport.
2000    C        J. Climate 12(1), 83-91
2001    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2002    C        Destabilization of the thermohaline circulation
2003    C        by atmospheric eddy transports.
2004    C        J. Climate 7(12), 1870-1882
2005    o Will need long integration testing.
2006    checkpoint53b_pre
2007    
2008    o created pkg/mom_common in preparation for variable viscosity code
2009    o renamed and split ini_mnc_io
2010    o pkg/land: only liquid water can diffuse or run-off
2011    o AIM using land: soil wetness availability account for snow
2012    o added printMapIncludesZeros to EEPARMS namelist
2013    
2014    checkpoint53a_post
2015    o restore TAMC compatiility for exf_constants.h
2016      (no usage of _d in .h)
2017    o Additional storing in KPP in an attempt to fix
2018      TAMC problem with adjoint of KPP code.
2019      (no success...)
2020      Identical code works fine with TAF.
2021    o Fixed verification/natl_box_adjoint experiments.
2022      Initial conditions for Experiments 4 and 5 are now
2023      set to "SEAICE_initialHEFF=0", which is more reasonable,
2024      and hence gives results closer to that of Experiment 2.
2025      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2026    
2027    checkpoint53
2028    o stable checkpoint with up to date adjoint
2029      TLM tests only run for 1st grdchk at the moment. Its unclear if
2030      this is a code problem or a problem with resetting code for g_
2031      variables that is being autogenerated wrong.
2032      Otherwise:
2033       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2034       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2035         are both still in chaos following their security messes.
2036    
2037    checkpoint52n_post
2038    o various build (mostly genmake2) changes including:
2039      - ability to build/run more easily within Cygwin and MacOS X
2040      - more complicated Makefiles with a stronger dependence on Gnu Make
2041    o pkg/seaice modifications
2042      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2043        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2044        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2045      - changed proxy for geostrophic velocity and updated
2046        verification/lab_sea/results/* accordingly
2047      - removed ADI dynamic solver from pkg/seaice
2048      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2049        they caused a segmentation fault under certain circumstances
2050      - removed unused field WATR
2051    o bug fix in exf-package:
2052      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2053         now reflect that.
2054    o small fixes in the cal-package:
2055      - set reference date to first of January for the 'model'-calendar
2056      - failing of cal_CheckDate in cal_FullDate now actually results in a
2057        warning
2058    o small modifications in exf-package to increase flexibility:
2059      - change climtempfreeze from a constant to a runtime parameter that
2060        is specified in data.exf_clim (default = -1.9)
2061      - introduce runtime parameter windstressmax (default = 2.0) that is
2062        specified in data.exf
2063    o fix in pkg/thsice:
2064      - update Evap (Tsf changes) to be consistent with Latent heat flux
2065      - maintain snow precipitation unchanged (even if Tsf >=0).
2066     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2067    
2068    checkpoint52m_post
2069    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2070      this does not change any of the results, because myIter=0 in swfrac always
2071      lead to jwtype=2 (the default anyway), but the call makes little sense
2072      as a default
2073    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2074    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2075      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2076    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2077    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2078    o extending useSingleCpuIO option to work with new exch2 I/O format
2079      - old-style, missing-tile I/O is still accessible by defining CPP
2080        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2081    o monitor package can write to NetCDF files and/or STDOUT
2082    o fix re-definition bug in MNC_GRID_INIT_ALL()
2083    o doc/api_reference added
2084      - a framework for building an API Reference Manual using all
2085        the "protex" comments embedded in the code
2086      - see pkg/generic_advdiff, pkg/mnc for examples
2087    o MNC:
2088      - make myThid the last argument for all subroutines
2089      - new default for the grid files: NO halos
2090      - add useMNC and other run-time flags
2091      - separate per-file-group handling of the unlimited dimension
2092      - early initialization of MNC w/ flags read at the eeboot stage
2093        and lookup tables set in initialize_fixed
2094      - write all MNC output to a freshly-created directory
2095    o thermodynamics sea-ice (thsice) is now tested with testreport.
2096    o test exp. advect_cs: use the standard cs32 grid ; update output.
2097    o Added functionality to grdchk:
2098      pick global i,j,k position (or nearest wet) where to perform check.
2099    
2100    checkpoint52l_post
2101    o new land formulation:
2102      a) use ground enthalpy as prognostic variable to ensure exact
2103         energy conservation.
2104      b) account for water temperature and for latent heat of freezing
2105         in all processes (rain, run-off, ground storage)
2106      c) compute surface and ground temperature implicitly.
2107    o aim_v23 modification for new land model:
2108      a) Treat separately land / ocean / sea-ice surface fluxes
2109         to allow implicit computation of land & sea-ice surface temp.
2110      b) add snow precipitation.
2111    checkpoint52l_pre
2112    
2113    o fix problem (when 1 tile is empty) in min/max monitor.
2114    o fix bug in timeAve (u,vZetatave in common block)
2115    o no restoring terms under ice for pkg/seaice
2116    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2117    o bug fix for pkg/seaice pickups
2118    o change MNC call locations and add coordinate attributes
2119    o mask vorticity at the corner ; affects global_ocean.cs output
2120    o fix ini_curvilinear_grid ; test CS experiments with mpi
2121    o aim.5l_cs: modify sea-ice fraction input file ; update output
2122    o exf: Adding simple range check routine for exf fields after read
2123    
2124    checkpoint52k_post
2125    o removed top-level directory "diags"
2126      - we migrated these functions to pkg/timeave a long time ago
2127    o fixed bug introduced in pkg/monitor
2128    o accuracy ctrlprec = 32 insuffient for gradient checks using
2129      averaged fields (I/O via cost_averages)
2130      -> use ctrl.h in active_file*.F to control I/O precision.
2131    o paramter list of CALL ADTHE_MAIN_LOOP
2132    o added initial do_the_model_io to ecco
2133    o set all ...Freq to zero after cost_final
2134      taveFreq, dumpFreq, pChkptFreq
2135    o MAIN and ECCO differentiability restored
2136    
2137    checkpoint52j_post
2138    o fix nchklev in tamc.h for global_ocean...
2139    o Bringing flow and store directives up-to-date
2140    o Really weird thing!
2141      call do_the_model_io from the_main_loop with parameters
2142      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2143      TAF places a faulty re-call of initialise_varia
2144      after cost_final call which should not be there!
2145    checkpoint52j_pre
2146    
2147    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2148      error messages
2149    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2150    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2151      debug output
2152    o modfied mdsio_writefield.F to handle non-global files under exch2
2153    o update AIM Cubed-Sphere exp (aim.5l_cs):
2154      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2155    o update AIM Equatorial Channel exp:
2156      use standard aim_v23 pkg and change the SST fields to be more realistic.
2157    o globalFile now works with exch2
2158    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2159      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2160    o limit timeave output for hi-res integrations
2161    
2162    checkpoint52i_post
2163    o removed CPP_EEOPTIONS.h from verification/*/code
2164    o updated the tiling for global_ocean_pressure
2165    checkpoint52i_pre
2166    
2167    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2168      the old pkg/aim).
2169    
2170    checkpoint52h_pre
2171    o shortened offending lines in exch2_send_rx?.template
2172    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2173    o genmake2: add build & execute test for NetCDF code
2174    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2175      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2176    o added useSingleCPUIO flag to monitor.F and mon_out.F
2177    o added temporary hack for sea-ice dynamics on the cube:
2178      metric terms are ignored and it is assumed that
2179      there is no sea-ice on cube faces 1, 2, 4, and 5.
2180    
2181    checkpoint52f_post
2182    o added exch2 cube routines to pkg/exch2
2183    o modified hs94.cs-32x32x5 to use it
2184    o added new grid files to hs94.cs-32x32x5
2185    checkpoint52f_pre
2186    
2187    checkpoint52e_post
2188    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2189      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2190    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2191      to work with implicit vertical advection and AB ;
2192    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2193    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2194     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2195    checkpoint52e_pre
2196    
2197    o fix bug in impldiff when Nr=1 or Nr=2.
2198    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2199    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2200    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2201      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2202    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2203    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2204    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2205    
2206    checkpoint52d_post
2207    o re-tiled many expts to allow comparison in multi-processor mode
2208      - updated output accordingly
2209      - changed hs94.128x64x5 to use intial T from file rather than use the
2210        random number generator
2211    o add infrastructure in model routines for fizhi and gridalt packages
2212    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2213    o changes to permit hi-res, cubed-sphere, configuration
2214      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2215      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2216      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2217        of surface winds for the cube
2218      (A verification experiment, based on global_ocean.cs32x15, but with
2219       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2220       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2221       complete with example surface forcing files and matlab scripts to look
2222       at the output and compare it with that of global_ocean.cs32x15.)
2223    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2224       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2225       to conform to the common rule.
2226    o check-in the first version of the coupler + interfaces for multi-components
2227       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2228       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2229       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2230       - ocean and atmos. share the same horizontal grid (no interpolation).
2231       - exchanges between component and coupler is done in forward_step
2232    o new verification experiment, cpl_aim+ocn:
2233       coupled ocean - AIM atmosphere on cs32 grid.
2234    
2235    checkpoint52d_pre
2236    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2237    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2238    
2239    checkpoint52c_post
2240    o Fixing OPTIONS files for use of exf:
2241      - ALLOW_ECCO not needed
2242      - ECCO_CPPOPTIONS.h should not be included from
2243        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2244        as has been the case in the past
2245      - All cal/exf related options are currently set in
2246        single header file. Should remain so until we
2247        agree on a consistent new policy.
2248    o Removed all CPP options for cal package.
2249      cal has no more CPP options.
2250    o modified STOREs in GAD_ADVECTION
2251    o corrected key comp. for passkey
2252    
2253    checkpoint52b_post
2254    o new version: "thsice" of thermodynamic sea-ice pkg:
2255     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2256     - modify fluxes but do not change theta directly;
2257     - light cleaning of bulk_force pkg (still needed with thsice).
2258     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2259       + output_thsice.txt to test thsice & bulk_force pkgs.
2260    o put back grid & coriolis monitor output.
2261    checkpoint52b_pre
2262    
2263    o call "do_the_model_io" at the beginning (=> dump initial state)
2264    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2265    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2266      (need info on NUMBER_OF_PTRACERS)
2267    o missing PTRACERS headers in some routines
2268    o default tamc.h in pkg/autodiff supposed to crash
2269      to ensure proper customization
2270    
2271    checkpoint52a_post
2272    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2273      - moved surfaceTendencyTice from pkg/seaice to main code
2274      - subroutine FREEZE_SURFACE now limits only surface temperature
2275        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2276        => new output.txt for global_ocean.cs32x15 & global_with_exf
2277      - keep the old version of FREEZE for backward compatibility;
2278        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2279      - corresponding modifs for TAF directives
2280    o added surface flux output variables to TIMEAVE_STATVARS
2281    o time-averaged output for pkg/ptracers
2282    o fix problem with ECCO-related divided adjoint
2283      snapshot file was missing some ad-variables,
2284      but no warning issued by TAF
2285    
2286    checkpoint52a_pre
2287    o some bug fixes for #undef REAL4_IS_SLOW
2288    
2289    checkpoint52 = ecco_c52_e35
2290    o after testing adjoints of checkpoint51u_post
2291    
2292    checkpoint51u_post
2293    o this is the post-merge tag of the ecco-branch
2294      (needs another clean checkout and re-testing)
2295    o various natl_box_adjoint configs and results
2296      but no input fields
2297    o obcs adjoint not yet merged!
2298    o adding ECCO global 1x1 and 2x2 degree configs
2299    o updated/extended some store directives for seaice
2300    o pkg/ecco now containes ecco-specific part of cost function
2301    o top level routines the_main_loop, forward_step
2302      supersede those in model/src/
2303      previous input data.cost now in data.ecco
2304      (new namelist ecco_cost_nml)
2305    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2306    
2307    checkpoint51t_post
2308    o this is the pre-merge tag of the ecco-branch
2309    
2310    checkpoint51s_post
2311    o cleanup: removed various obsolete #define-s
2312    o pkg/grdchk
2313      - renamed 'ph-grd 3' to 'grad-res'
2314      - merged from ecco-branch
2315        (remaining bug fixes for obcs gradient checks)
2316      - additional high-precision output for testreport
2317        (grep for 'precision_grdchk_result')
2318    
2319    checkpoint51r_post
2320    o cleaned up or removed CPP_OPTIONS.h files
2321    o updated results for some of the tests to reflect the new
2322      optfiles (-ieee: -O0 instead of -O3)
2323    
2324    checkpoint51q_post
2325    o cd_code:
2326      - moved cd_scheme.F -> cd_code_scheme.F
2327      - separate read_checkpoint from cd_code_ini_vars.F
2328      - separated cd_code part from write_checkpoint
2329      - updated AD_SOURCE, generated .flow
2330      - added CD_CODE_VARS.h to the_main_loop
2331      - Moving cd_code specific store dir.s to pkg/cd_code
2332    o ctrl package totally restructured
2333      - pack/unpack now optional and decoupled from
2334        xx_/adxx_ I/O
2335      - ctrl_pack/unpack cleaned
2336        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2337      - confined inclusion of AD_CONFIG.h to where necessary.
2338    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2339    
2340    checkpoint51p_post
2341    o create initial cd_code package
2342      - WARNING: the initialization of fields within packages
2343        is broken because INI_FIELDS (where READ_CHECKPOINT is
2344        called) is called *before* PACKAGES_INIT_VARIABLES.
2345        This seems to be backwards since
2346        1) its important to initially zero the entire field including
2347           the "halo" region
2348        2) zeroing needs to be done *before* reading pickup info
2349           and the pickup call might or might not happen in any
2350           particular run
2351      - this needs an overhaul for R2
2352    o cleanup verification/*/code/GMREDI_OPTIONS.h
2353    o cleanup testreport
2354    
2355    checkpoint51o_post
2356    o bringing AD-related verif's up to date with genmake2
2357      - carbon/
2358      - global_ocean.90x40x15/
2359      - hs.94.1x64x5/
2360      - (front_relax/ )
2361    o (more) consistent directory structure for AD-related verif.'s
2362    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2363    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2364    o bug fix in find_alpha.F for MDJWF:
2365      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2366        change rho -> rho-rhoConst
2367      - replace call find_rho to find_rhonum
2368    o initialisation of rFlx extended to full array (required by TAF)
2369      and shifted to thermodynamics
2370    o removed PTRACERS.h in ptracers routine
2371    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2372    o Correcting initialisations for fVerU, fVerV.
2373    o helping TAF to recognize dependency on kUp for
2374      fVerU, fVerV
2375    o Replacing delZ by delR in pkg/ctrl/
2376    checkpoint51o_pre
2377    
2378    o undid all of cp51 pending some cleanups and discussion
2379    o added the [#include "AD_CONFIG.h"] statement to all files that need
2380       it for adjoint/tl #defines
2381     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2382     o removed tools/genmake since it no longer works
2383    
2384    checkpoint51n_post
2385    o modifications to make FREEZE flux visible to pkg/kpp
2386      - moved surfaceTendencyTice from pkg/seaice to main code
2387      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2388      - subroutine FREEZE now limits only surface temperature
2389        (this means new output.txt for global_ocean.90x40x15,
2390         global_ocean.cs32x15, and global_with_exf)
2391    o added surface flux output variables to TIMEAVE_STATVARS
2392    
2393    checkpoint51n_pre
2394  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2395  o added [#include "AD_CONFIG.h"] to all files that use the following  o added [#include "AD_CONFIG.h"] to all files that use the following
2396    defines:    defines:

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