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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.871 by dimitri, Fri Sep 14 02:07:37 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
8    o pkg/ecco: allow user defined cost function contributions
9    o testreport:
10      Allow to choose (per experiment) the list of tested output variables
11       and the main variable (used to issue a pass/FAIL ) ;
12      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
13      - default is unchange: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
14      Also modify printing of summary:
15       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
16       b) echo the list of tested variables in the individual summary.txt of
17          each experiment.
18    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
19      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
20      (but still depend on the tile decompostion of the domain).
21    o pkg/seaice: change a discretization detail to make the B-grid code
22      "more symmetric". This change is likely to remove all "ridges/leads" that
23      where quasi-aligned with the grid in B-grid solutions. It may also be
24      the solution to the stress coupling issues with the B-grid.
25    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
26      remove .cvsignore from input dir. (since testreport no longer run here).
27    o pkg/thsice:
28     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
29     - fix reshaping of sea-ice just after advection:
30       melt all the ice only if ice-volume is too small.
31     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
32       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
33     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
34    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
35      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
36    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
37      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
38      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
39      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
40      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
41      -> update output.txt
42    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
43     this affects truncation error: -> update output.txt of exp:
44      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
45      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
46    
47    checkpoint59f
48    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
49    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
50      a bounded range (in forward mode)
51    o pkg/ecco, ctrl, autodiff and mom_common:
52     internal parameter controls, completements of implementations
53    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
54    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
55      (not seem any difference in testing results).
56    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
57       at face corners.
58    o pkg/generic_advdiff:
59     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
60      loop range indices for computing vertical advection tendency
61      and do the calculation in the interior only (no overlap) ;
62      for now, only implemented for SOM advection (to save CPU time).
63     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
64    o exch2 adjoint
65      First set of changes:
66      - add exch2 hand-written adjoint templates
67      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
68        This will require cleanup in pkg/autodiff/*.F
69        (changed routines currently kept separate in verif. code/)
70      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
71        that used to hide exch2 or cubed-sphere specific code
72        (commented via 'cph-exch2')
73    o pkg/seaice
74      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
75    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
76       output of global_ocean.cs32x15.thsice .
77    
78    checkpoint59e
79    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
80      for B-grid vector (not yet tested) and C-grid vector (<- only used
81      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
82    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
83      (#ifdef ALLOW_SALT_PLUME)
84    o gather_2d/scatter_2d: removed halo regions
85    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
86      scheme and the corresponding test case (under front_relax dir). For now,
87      only available with Skew-flux form and not yet tested in realistic set-up.
88      adjoint: store directives updated, but gradient checks deteriorated,
89      so maybe GM/Redi adjoint is now broken.
90    o seaice adjoint
91      * add AREA, HEFF, HSNOW as control variable
92        (should not change lab_sea results)
93      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
94    o pkg/seaice:
95      * added computation of saltFlux in seaice_growth;
96        For time being, sea ice salinity is assumed constant
97        contribution of snow flooding to freshening of sea ice is neglected.
98        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
99        defaults to 0.0 in order to maintain backward compatibility.
100        Typical values for SEAICE_salinity are 4 to 10 g/kg.
101      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
102      * added SEAICE_availHeatFrac, which specifies fraction of surface level
103        heat content used to melt or grow ice
104      * commented out cap of HICE: it helps keep ice thinner
105      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
106      * applied OBCS T/S mask to HEFFM sea ice mask
107    
108    checkpoint59d
109    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
110     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
111     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
112    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
113     and change default value of parameter "GM_Small_Number";
114     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
115       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
116       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
117    o pkg/ecco: cost function when applying pkg/smooth to controls
118    o pkg/ctrl: add forcingPrecond run time parameter
119    o pkg/seaice:
120     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
121     - fix bug in metric terms of u-equation in LSR solver (implicit part),
122       changes verification/lab_sea
123     - rearrange implicit part of u-equation in LSR solver to make it easier to
124       read, understand, and debug. This causes changes at the truncation level.
125     - fix (serious) bug in the boundary conditions (sign error in the implicit
126       part) of the LSR solver. Changes all LSR results.
127     - fixed problem with HSNOW initialization to avoid thick snow when AREA
128       is initilized with small values - does not change lab_sea results.
129     - added HsnowFile initialization capability
130    o pkg/smooth: addition to model/src and pkg/ctrl so allow
131     initialization of pkg/smooth and application to control vector
132    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
133    o dependencies: pkg/profiles requires pkg/cal
134    o pkg/profiles:
135     - added option ALLOW_PROFILES_GENERICGRID
136         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
137         that interpolation information (grid points and coefficients) is provided
138         within the netcdf input files.
139         -> sample matlab scripts can be found in MITgcm_contrib/gael
140         that allow you to prepare netcdf input files.
141     - also modified: cleaner include statements, cleaner error print statements,
142       cleaner stops when error, and more tests of the netcdf input files consistency.
143    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
144    o pkg/seaice:
145     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
146       requires a new routine: seaice_diagnostics_fill.F
147     - make sure that seaice does not move if not forced (pressure replacement
148       method, Hibler and Ip, 1995), changes results
149     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
150     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
151       It is turned off by default (=-1.), because it changes the results.
152     - make it possible to read AREA from a file, too.
153    
154    checkpoint59c
155    o add S/R and diagnostics for oceanic mixed-layer depth
156    o move GMRedi call after all vertical mixing schemes (including KPP)
157    o pkg/thsice:
158     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
159      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
160    o pkg/obcs:
161     - bug fix for balance code
162    o pkg/seaice:
163      - allow values of SEAICE_elasticParm > 1
164      - add new parameter SEAICE_evpTauRelax as an alternative
165        to SEAICE_elasticParm
166      - make lsr boundary conditions free slip (by default), changes result
167      - add code for no slip boundary conditions for lsr
168      - set minimum of zeta to zero (and not 4e8) (changes results)
169      - add a cap on AREA after advecting AREA if seaice_growth is not called
170    o change calculation of Visbeck K:
171      - no longer depend on tapering scheme; instead, compute slope (limited
172        by GM_maxSlope). this is equivalent to what was comuted before with
173        clipping or linear tappering.
174      - fix vertical averaging (wrong by 1/2 level)
175      - leave the old version (but will not be maintained) within
176        #ifdef OLD_VISBECK_CALC / #endif
177      - update output of exp. ideal_2D_oce
178    o change error catch in calc_r_star to improve vectorization
179    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
180      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
181    o adjoint:
182      Re-organized adjoint checkpointing according to Matt Mazloff
183      (but with modifs/completions/cleanups)
184      Storing is now bundled into large arrays to optimized I/O
185      (and second step in cleanup of the_main_loop)
186    
187    checkpoint59b
188    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
189      - export/import (between ocean & coupler) fields needed for ocean DIC.
190    o pkg/seaice:
191      - get rid of three more exchanges seaice_calc_viscosities (required
192        different loop boundaries in seaice_lsr and seaice_ocean_stress)
193      - bug fix in seaice_ocean_stress (update of lab_sea required)
194      - reduce loop boundaries to necessary minimum also in seaice_evp
195      - go back to the old way of computing deltaC/Z as the adjoint likes that
196        better
197    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
198      passive tracer to an Age Tracer) + update output.txt
199    o pkg/exf:
200      - implement A-grid / C-grid selection for wind-stress input files.
201      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
202      for now, in exf_bulk_largeyeager04.F only :
203      - change implementation for case where windspeed + 2. components wind-stress
204        are read-in. AND use rhoConstFresh to convert evap.
205    o pkg/seaice:
206      - use correct EXCH_UV for wind-forcing (on A-grid).
207      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
208        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
209    o pkg/exf:
210      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
211      EXF_INTERPOLATION:
212      - merge global_with_exf/code version of exf_interp_read.F
213        to the main code ;
214      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
215        reading the file ; Important: This options needs to be defined to recover
216        previous code.
217        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
218      - no longer loose real*8 precision along the way when using exf_iprec=64.
219    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
220      - change discretisation of evp-solver in order to avoid another exchange
221        (changes lab_sea) and clean up a little
222      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
223        help the adjoint (this also changes the results slightly)
224      - add a few "_d 0" where they had been missing in seaice_evp.F
225      - cleaning up: remove unused seaice_calc_rhs.F
226    o pkg/exf: some cleaning-up:
227      - change various "constants" into runtime parameters
228      - cleaned-up Large&Yeager04 routine which should eventually
229        replace exf_bulkformulae.F (changed names of S/R and CPP)
230        and merged various ALLOW_ATM_WIND options
231     only used with thsice pkg (in thsice_get_exf.F):
232      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
233        which are used when useStabilityFct_overIce=TRUE (= the default)
234      - change default values of ice & snow emissivity and scale downward LW
235        by ice & snow emissivity.
236    o pkg/thsice:
237     fix few little problems, in thsice_calc_thickn.F:
238      - growth vertically (and not laterally) if iceFrac == iceMaskMax
239      - melt only laterally if hIce < hThinIce (as the comments say)
240      and in thsice_extend.F:
241      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
242      - start to form ice as soon as the minimum ice-volume is reachable.
243     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
244      and cpl_aim+ocn
245    o pkg/kpp
246     - move computation of surface related input fields to KPP into a new
247       subroutine kpp_forcing_surf.F
248     - remove wrong (within bi,bj loops) EXCH calls.
249     - little cleaning (add argument myThid in last position, cvs header ...)
250     - for now, fix conservation problem by exchanging KPPviscAz (may not
251       be the best fix)
252    o pkg/seaice
253     - check for inconsistent evp parameter/cpp-flag combination
254     - remove leftover errIO flat for obsolete name list error handling
255    o OpenAD
256     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
257    
258    checkpoint59a
259    o pkg/seaice: some parameter clarifications and a little bit of clean up
260    o pkg/thsice: rename run-time parameters:
261       himin       -> hIceMin
262       himin0      -> hThinIce
263       hihig       -> hThickIce
264       i0          -> i0swFrac
265       transCoef   -> bMeltCoef
266       frac_energy -> fracMelting
267      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
268       with default values (for now) that do not change the results.
269      remove old version of thsice vars advection in pkg/seaice.
270    o in FFIELDS.h:
271      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
272      - make pLoad & sIceLoad always available (but still only used if
273         ATMOSPHERIC_LOADING is #define).
274    o pkg/kpp: replaced _KPP_RL with _RL
275    o bug fixes for vertical diffusivity computations when both KPP and
276        3D diffusivity arrays are used.
277    o pkg/seaice: fix bug in evp solver, while doing that
278      - change (improve?) discretization of stress computations for both
279        cgrid-lsr and evp solver
280      - add a new routine to compute strain rates
281      - the above changes lab_sea results
282      - add no slip conditions for evp solver (off by default), lsr-version
283        may follow
284      - fix exchange for shear at Z-points (does not change lab_sea)
285      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
286        (to force the user to pick a time step since there is not "safe" way
287        of choosing it)
288      - add principal stress diagnostics
289      - rearrange fields for evp a little to avoid having to call a: too many
290        exchanges and b: exchanges for stress trensor components which we do
291        not have.
292      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
293        of evp, complete rewrite for lsr case (latter is does not yet work
294        in all cases)
295    o pkg/kpp: add code to have mixing in shelf ice caverns
296      - add myThid to all kpp routines (long overdue)
297    
298    checkpoint59
299    o pkg/exf:
300      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
301        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
302      - move exf header files from lower_case.h to UPPER_CASE.h ;
303        add missing cvs Header & Name
304      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
305      - add namelist param. selectStressGridPosition, exf_monFreq
306      - retire many _CLIM routines, and remove data.exf_clim
307        + params moved to data.exf
308        + climsst, climsss now handled by exf_set_gen, i.e.
309          climss?period=0 refers to constant field,
310          climss?period=-12 to monthly forcing
311      - split up namelists in data.exf
312    o pkg/seaice:
313      - remove seaice_exch and seaice_exch_uv
314      - remove superfluous exchange of theta
315      - add myThid to seaice_budget_ocean/ice
316      - add new interface for atmospheric wind forcing (C-grid only)
317        + new routine
318        + two new field (taux, tauy for stress over ice)
319        + removed one global field (DAIRN) for C-grid case only
320    o pkg/thsise
321      - 2nd set of modifs for thsice adjoint in conjunction with exf
322    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
323    
324    checkpoint58y_post
325    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
326      vertical diffusivity, similar to that in MOM4; turned on using
327      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
328      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
329    o Added capability for 3D specification of background vertical diffusion
330      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
331      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
332      "data" file that contains the 3D vertical diffusivity coefficients.
333    o ice dynamics (pkg/seaice) with thsice thermodynamics:
334      - add code within pkg thsice to advect & diffuse sea-ice fields
335      similar to (and will replace) what has been added in  seaice_advdiff.F,
336      but: - conserving Mass, Heat & Salt.
337           - better when using non-linear advection scheme (not yet fully tested)
338           - can also be used in atmospheric set-up (for now, only the diffusion).
339    
340    checkpoint58x_post
341    o IO option for global-file compact format:
342      - add options when generating topology (utils/exch2/matlab-topology-generator)
343      - add I/O capability (pkg/mdsio).
344      - adapt utils/matlab/rdmds.m to read this format.
345      for now long-line format not yet supported by pkg/mdsio (& exch2).
346    o shelfice: add a few diagnostics
347    
348    checkpoint58w_post
349    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
350      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
351      (and replace horiVertRatio in NH code).
352      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
353                         and tutorial_plume_on_slope (sensitive to truncation)
354    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
355      directly to drive seaice model (C-grid only)
356    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
357     - reintroduce computation of wind from stress,
358     - compute tau (in exf_bulkformulae.F) from windstress averaged to
359       mass points to avoid tau = 0
360     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
361    o rdmnc.m: make it work with "global" files created with gluemnc
362    o rdmnc.m : some improvements in dealing with singleton dimension
363      (tested on all testreport mnc output files).
364    o genmake2: disable pkg/profiles if netcdf test fails.
365    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
366    o move call to cal_readparms up to make calendar parameters/variable available
367      to all packages
368    
369    checkpoint58v_post
370    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
371      useDynP_inEos_Zc tested.
372    o pkg/exf: changes to properly interpolate/mask/scale initial fields
373    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
374      and portions thereof.  See read_cs.txt for description and examples.
375    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
376      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
377      following the great-circle arc between those 2 points.
378    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
379      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
380    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
381     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
382     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
383     - still needs work (not working with some options ; efficiency to improve)
384       and serious testing.
385     - use this scheme for temperature & salinity in 2 advection test exp.:
386       advect_xy & advect_xz, respectively.
387    
388    checkpoint58u_post
389    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
390    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
391    o testreport: add option "-skipdir" to skip some test.
392    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
393      momentum calculation.
394    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
395    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
396      remove checkpoint.F and the_correction_step.F (no longer used);
397      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
398    o add option (linFSConserveTr) to correct for tracer source/sink due to
399      Linear Free surface
400    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
401    o pkg/thsice: fix reading mnc-pickups
402    
403    checkpoint58t_post
404    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
405    o pkg/mdsio:
406     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
407       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
408       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
409     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
410     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
411       either MDS_READ_FIELD or MDS_WRITE_FIELD )
412     - new S/R (to replace MDSWRITEMETA), which allows to write more
413       informations (variable names, time ...) to meta files.
414     - modify rdmds.m to give back the meta file content.
415    o pkg/diagnostics: change vertical interpolation to be safer, and more
416       flexible (define p-levels to interpolate to in data.diagnostics);
417      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
418       diagnostic pointer.
419    o pkg/seaice: more cleaning up of seaice_growth, added many comments
420    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
421    o fix multi-category seaice:
422     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
423       SEAICE_MULTICATEGORY
424     - fix short wave heat flux
425    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
426       and allow to use EVP solver. Change forward lab_sea: test both EVP
427       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
428    o Initial check-in of lab_sea adjoint
429      (very similar to natl_box_adjoint/code_seaice)
430      * used C-grid and EVP solver
431      * used KPP, GM/Redi
432      * uses inAdExact=.TRUE.
433      * gradient checks fail for both ADM and TLM
434        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
435        f.d. gradients actually seem more problematic than ADM, TLM gradients;
436        issue is related to forward mismatch between g77 an ifort
437    o pkg/seaice: overhaul of thermodynamics
438     - growth.F and groatb.F are replaced by new routine seaice_growth.F
439     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
440     - move a few global fields out of SEAICE.h into seaice_growth.F and
441       make them 2D (FICE/QNETO/ ...)
442     - remove FO (it is the same as QNETO)
443     - introduce a few local fields to avoid modifying external fields such
444       as atemp, etc.
445    
446    checkpoint58s_post
447    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
448      changed exf_set_gen.F so that
449        genperiod=0 means input file is one time-constant field and
450        genperiod=-12 means input file contains 12 monthly means
451    o CG2D: use pre-computed solver main-diagonal (stored in common block);
452      this affects truncation error ; generate new output file for exp. which
453      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
454        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
455        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
456        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
457        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
458        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
459    o start implementation of deep-atmosphere and anelastic formulation
460    o verification: remove 2nd copy of input files and use script "prepare_run"
461      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
462    o mom_common/vecinv/fluxform: fix a few initialisation isssues
463    o profiles: fix for multithreaded case
464    
465    o diagnostics: rename few diags:
466      s/'PRESSURE'/'RCENTER '/g
467      s/'TICE    '/'oceFreez'/g
468      s/'TAUX    '/'oceTAUX '/g
469      s/'TAUY    '/'oceTAUY '/g
470      s/'SWFLUX  '/'oceQsw  '/g
471      s/DIFx/DFxE/g
472      s/DIFy/DFyE/g
473      and add few ocean-forcing diagnostics:
474      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
475    o modifications to pkg/seaice/growth.F and budget.F, which change results of
476      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
477      as actual snow thickness.  It now refers everywhere to effective snow
478      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
479    
480    checkpoint58r_post
481    o modifications to pkg/seaice/growth.F, which change results of
482      lab_sea experiment: fixes pertain to melting snow over open water, to
483      masking EVAP under sea ice, and to using the correct AREA variable for
484      computations of EVAP, PRECIP, HSNOW, and GHEFF
485    o add ability to read bathy, salt, and theta using MNC (off by def)
486    o add flooding algorithm and advection of HSNOW for pkg/seaice;
487      both are turned off by default and do no change any results
488    o seaice advection with pkg/thsice: a step toward the use of non-linear
489      advection scheme, but #ifdef or commented out for now (requires more EXCH).
490    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
491      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
492      in natl_box (affects results @ truncation level: update output.txt)
493    o multi-threading and IO:
494      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
495      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
496        (needed to work with SingleCpuIO): tested in all verif. exp.
497    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
498      affects the results (but none of the verification test uses this scheme).
499    o Adding some pkg/diagnostics capability to pkg/seaice
500      (will certainly be subject to changes)
501    o ctrl: adding new control variables:
502      lwflux, lwdown, evap, snowprecip, apressure, runoff
503    
504    checkpoint58q_post
505    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
506      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
507      high_res_cube configuration by 4% on Columbia.
508    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
509      add (in global_with_exf/code) a version of EXF_INTERP_READ without
510      dynamical allocation (seems to work in multi-threaded).
511    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
512      single CPU io) so that TAF does not have to see EESUPPORT.h
513    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
514    
515    checkpoint58p_post
516    o obcs: stop if obcs is used with useCDscheme = .true.
517    o shelfice:
518     - fix a sign error so that no slip at shelfice interface works
519     - remove stop for combination non-hydrostatic code and shelfice. That does
520       not mean, that the results are correct, but at least they are numerically
521       stable
522    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
523    o added adjoint exch routined for all exch*3d* routines
524      and updated flow directives
525    
526    checkpoint58o_post
527    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
528      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
529    o change controling S/R for writing pickup file (new S/R do_write_pickup)
530      and clean-up reading/writing of pickup files.
531    o fix local version of read/write pickup (NH part) in rotating_tank/code
532    o simplify EXCH interface:
533     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
534     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
535    o added the regrid package
536    o shelfice:
537     - add a simple boundary layer scheme to reduce noise
538     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
539    
540    checkpoint58n_post
541    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
542       local variable (not in common block).
543    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
544      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
545      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
546        to work with SingleCpuIO.
547    o add "_d 0" to real constant of pkg/cfc subroutines ;
548       update exp. cfc_exemple & tutorial_cfc_offline output files.
549    o multi-threading and IO:
550      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
551        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
552      - barrier before and after reading.
553      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
554      - avoid using MDS_WRITELOCAL for LAND pkg output.
555      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
556        common-block variables ; Allows multi-threading with master-thread IO.
557    o change default MAX_NO_THREADS from 32 to 4 ;
558      and stop cleanly when MAX_NO_THREADS is too small.
559    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
560    
561    checkpoint58m_post
562    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
563       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
564    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
565       keep global_ocean.90x40x15 (for AD testing) with former secondary test
566       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
567    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
568        add MITgcm_tutorials (= code + all the tutorials)
569    o ecco, option to compute cost for total ssh (mean+anom)
570    o consistent with addition of ptracer and ssh in pkg/profiles
571    o profiles: adding ptracer and ssh
572    o testreport: change multi-test output-file name
573      (from output.txt.{name} to output.{name}.txt)
574    o profiles: now ok for mutli-tiles case
575    o seaice: add 4 parameters for different advection schemes for area,
576      (effective) seaice thickness, enthalphy, and snow height. Their default
577      is the standard parameter SEAICEadvScheme
578    o calc_gw:
579     - add cosFacU in zonal viscous flux (harmonic.visc.).
580     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
581       of tutorial_plume_on_slope.
582    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
583    o calc_gw: true flux-form, account for horizontal grid spacing.
584      update rotating_tank results, but not plume_on_slope (affected at
585      truncation level, 11 digits).
586    
587    checkpoint58l_post
588    o calc_gw:
589     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
590     - remove side-drag for now (need to fix it); update plume_on_slope results.
591     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
592    o commit code to make SST/SSS weights spatially variable
593      (based on either variable in-situ or variable initial T/S weights)
594    o pkg/ecco:
595      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
596        now based on horizontally varying weights wthetaLev, wsaltLev
597      * cost_averagesflags now returns year indices in addition to day, month
598      * sflux balance is performed on annual basis
599        (sflxumm, sfluxmm2, bal_sfluxmm)
600      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
601        including separate counting and multipliers
602    o pkg/rbcs
603      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
604    
605    checkpoint58k_post
606    o testreport:
607     - always build in dir. "build" (if not there, mkdir build instead of building
608       & running in input)
609     - run in dir run (if it exists), in build otherwise.
610     - call prepare_run (if input/prepare_run exists)
611     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
612    o pkg/exf modifications to interpolation and rotation routines for more
613       reasonable treatment of North Pole singularity: for tracers North Pole
614       value is set to northernmost zonal-mean value, for zonal velocity it is
615       set to zero, and for meridional velocity it is set to northernmost value.
616    o pkg/exf/exf_check_range.F
617     - add tile index to diagnostics and move stop statement to the very
618       end of the routine.
619    o pkg/diagnostics: (diagnostics_main_init.F)
620      define title of isomorphic variables according to the current config.
621    o pkg/thsice with pkg/seaice dynamics:
622    - fix domain of computation (interior only, required for exf) and do exchanges
623    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
624    o towards a standard way of dealing with multi-threading in MONITOR
625      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
626    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
627       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
628    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
629    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
630    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
631       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
632    o tracer advection:
633     - clean-up and simplify calc_common_factors.F
634     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
635       advection subroutine (but still not used within DST advection S/R)
636    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
637    
638    checkpoint58j_post
639    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
640      from file (collects calls previously in FORWARD_STEP)
641    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
642    o adjoint store dir. adjusted accordingly
643    o genmake2
644      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
645    
646    checkpoint58i_post
647    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
648      on wind stress (SEAICEstressFactor defaults to 1.)
649    o Total number of Timers is finite (<=40): comment out 2 non-essential one
650      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
651    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
652      on CS-grid: no longer loosing mass.
653    o exf & curvilinear-grid: no longer modify longitude xC & xG.
654    o pkg/ggl90: fix sloppy output and fix a bug
655    o pkg/seaice: added SEAICEuseEVPpickup parameter
656      - Set to false in order to start EVP solver with
657        non-EVP pickup files when using SEAICEuseEVP
658      - fix sign error in diffusion in seaice_calc_rhs
659    
660    checkpoint58h_post
661    * Modifications for bottom topography control
662      o replace hFacC by _hFacC at various places
663      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
664      o add non-self-adjoint cg2d_nsa
665      o update autodiff support routines
666      o re-initialise hfac after ctrl_depth_ini
667      o works for 5x5 box, doesnt work for global_ocean.90x40x15
668    * Adding verification for 5x5 box (4-layer) bottom topography control
669    
670    checkpoint58g_post
671    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
672       used for mean seasonal cycle, mean diurnal cycle); add an example
673       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
674    o pkg/ggl90:
675      - add parameter (minimum surface kinetic energy)
676      - fix bug (avoiding division by zero)
677    o couple pkg/thsice to pkg/seaice:
678      - modify advection in seaice to accomodate new scalar fields to be advected
679      - only muliDimAdection scheme work with seaice/thsice
680      - mapping of thsice-variables to seaice-variables, back and forth
681      - does not break the verification experiments, but does not give the
682        desired results either
683    o pkg/seaice
684      - make (default) second order advection a bit less confusing?
685    
686    checkpoint58f_post
687    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
688      to pkg/seaice):
689      - new routines thsice_map_exf and thsice_get_exf provide the interface
690      - add an additional formal parameter to thsice_solve4temp
691    o pkg/exf:
692      - add new fields wspeed, snowprecip (to be able to couple to thsice)
693      - correct Stefan-Boltzmann constant
694      - new parameter for longwave surface emittance
695      - separate some stuff from exf_bulkformulae into new routines  
696        exf_radiation, exf_wind
697      - add new parameters and constants: longwave emissivity for ocean, ice
698        and snow, evaporation parameters over ice
699      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
700        either wind from stress or stress from wind
701    o pkg/thSIce:
702    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
703    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
704       and THSICE_CALC_THICKN
705    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
706    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
707      to make debugging easier.
708    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
709    o pkg/bulk_force:
710      - clean-up comments and parameters ;
711      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
712    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
713      generate new output for test-experiment: aim.5l_cs.thSI
714    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
715      testreport accordingly
716    
717    checkpoint58e_post
718    o SEAICE_CGRID adjoint done
719    o R_STAR adjoint implemented.
720      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
721      * need to sort out init. of h0facc, etc.
722    o Make pkg/profile fully independent of ecco,cost, etc. stuff
723      to be able to use it in pure forward.
724    
725    checkpoint58d_post
726    o upgrade simple test-experiment to tutorial example:
727     step.1: duplicate the experiment and (step.2) will remove the old copy.
728      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
729      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
730      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
731      tutorial_global_oce_biogeo    <- copy of dic_example
732      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
733      tutorial_plume_on_slope       <- copy of plume_on_slope
734      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
735      tutorial_global_oce_optim     <- empty for now (David ?)
736      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
737     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
738    o correct a sign problem in cost_scat.F
739    o obcs and ptracers: fix boundary conditions for advections schemes
740      with larger stencil
741    o thsice adjoint: start
742    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
743      completeness
744    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
745      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
746    o ptracers adjoint:
747      * avoid extensive recomputatations
748      * fix missing re-init. of gptr (missed by TAF)
749    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
750      me to turn off the excessive output to STDOUT that this package produces
751    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
752      and add those terms in Vector-Invariant formulation.
753    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
754      if the control period (xx_hfluxperiod etc) is 0
755    o in profiles pkg, clean routines and fix details
756    o in ecco pkg, reading ssh data:
757      fix problem in case the model does not start at iter0=0
758    o fix mnc-pickup/restart for ptracers
759    o new package prifiles:
760      code to compute profile-based cost by Gael Forget
761      (modifs in ecco, ctrl, autodiff)
762    o Benign bug fix in initialization (spotted by M. Mazloff) of
763      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
764    
765    checkpoint58c_post
766    o adjoint: finish NLFS adjoint and provide reference output in
767      verification/global_ocean.90x40x15/results_ad_nlfs
768    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
769      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
770      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
771      with SEAICE_CGRID defined.
772    o move calendarDumps from "data" to "data.cal" and clean-up the code
773      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
774    o add useEXF & useCAL flags (for now, set in hard-coded way)
775    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
776      (were missing in NH mode, and wrong in quasihydrostatic mode).
777      waiting for Chris updated version of calc_gw to add those CALLs.
778    o fix bug in quasihydrostatic S/R ;
779      add a test for this option: global_ocean.90x40x15.qshyd
780    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
781      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
782    o add on/off flag useOffLine for package OFFLINE
783    o seaice:
784      - modify advection so that it works also on the C-grid
785      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
786        problem in multi-tile runs with C-grid
787      - add flags for clipping ice velocities and/or masking solver forcing
788      - fix drag (ocean on ice) formulation and a bug that caused noise in the
789        C-grid solver
790      - added a few comments to seaice_diffusion.F
791      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
792        are now exclusive)
793      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
794        required re-ordering the code a little:
795       + make DAIRN global variable (defined in SEAICE)
796       + move computation of the viscosities eta and zeta into a new separate
797         routine (because I need to recompute them in seaice_ocean_stress.F)
798    
799    checkpoint58b_post
800    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
801      update output.txt of exp. aim.5l_cs.thSI
802    o various mnc cleanups and improvements:
803      + shrink lookup tables by factor of ~4
804      + better error reporting when running out of lookup space
805      + able to handle longer path/file names (up to 500 chars)
806    o adjoint:
807      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
808      - TBD: "hidden" mom_vecinv recomp. in dynamics
809    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
810     (allow to differentiate between forcing components using new integer flags:
811      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
812     and add new flag to put Dissipation tendency out of Adams-Bashforth.
813    o ecco
814      - enable trend removal from SSH anomaly obs.
815    o adjoint
816      - a fix for PmEpR when #undef EXACT_CONSERV
817      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
818      - try to fix "hidden" recomp. in forward_step for NLFS
819        (NLFS seems broken sometimes after I checked it in)
820    o seaice:
821     - add c-grid version of the dynamic solver:
822       + three new routines that are the c-grid substitute lsr, dynsolver
823         and ostres
824       + put a few fields that were local to dynsolver into global common
825         blocks, so that I can move the computation of stresses etc into
826         seaice_lsr (saves coding but may break the adjoint).
827     - replace more hardwired parameters by runtime parameters
828     - add ice masks that mask the rhs of the implicit solvers where there
829       is no ice (commented out in seaice_dynsolver, because i am not sure
830       if this works properly), eventually this should replace the clipping
831       of ice velocities in seaice_dynsolver to +/-40cm/s.
832    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
833      include it only where its needed
834    o move balancing of fluxes before the call of external_forcing_surf
835    o seaice:
836      - correct units of turning angles (now they are really in degrees)
837      - move computation of GWATX/Y out of main routine into dynsolver
838      - initialize GWATX/Y in seaice_init
839    o Apply mask on Fresh-Water flux (needed for SSH forcing).
840      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
841    o seaice: add runtime flags for turning angles (default to zero)
842    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
843      and trend from exf forcing and ctrl control adjustments
844    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
845      (since checkpoint57x_post)
846    o change the default rotation period to 86164.s = the Earth rotation
847    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
848      and based on a reference stratification. Tested within hs94.cs-32x32x5.
849    o seaice advection: add code for choosing between the default (2nd order
850      central differences) and multiDim advection schemes provided by
851      pkg/generic_advdiff
852    o seaice:
853      - removed all references to SEAICE_GRID.h fields from
854        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
855        (cubed-sphere configuration will change a little)
856      - grid computations in seaice_init are obsolete now.
857      - cleaned up code a little so that is easier to read (hopefully).
858      - added new (better?) discretizations of default advection and diffusion
859        (turn on with SEAICEuseFluxForm)
860      - replace 1 in 3d global fields by kSurface in growth.F
861      
862    checkpoint58a_post
863    o seaice:
864      - bug fix in advect.F
865    o shelfice:
866      - separate shelfice load anomaly from pload (breaks with time
867        dependent forcing), => introduce constant field shelficeLoadAnomaly.
868        Its default is 0., but it may be computed more cleverly from (unknown)
869        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
870        done offline. A good approximation of the pressure load anomaly is
871        necessary to avoid large initial adjustment processes underneath
872        deep-reaching shelfice.
873      - small fix in ISOMIP shelfice_thermodynamics
874      - add more sophisticated thermodynamics of Hellmer (1989), this is
875        now the default
876      - give a few constants more intuitive names
877    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
878      if bulk formulae are used in long integration (especially EmPmR). Turn
879      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
880      if balancePrintMean, the imbalance that is substracted is printed to
881      STDOUT.
882    o fix bug (typo) in obcs_apply_eta.F
883    o add a new package shelfice which enables us to model the circulation
884      underneath shelf-ice with draughts of hundreds of meters.
885     - works
886     - to do: + include improved thermodynamics
887              + check whether kSurfC (from model/inc/SURFACE.h) can be used
888                instead of new field kTopC
889              + can we use topoFile, Ro_surf and existing code in ini_depth.F
890                instead of new field R_shelfIce and new code in ini_depth.F
891                and ini_mask_etc.F?
892              + adjust vertical mixing schemes?
893    o seaice pkg:
894     - add a cpp-flag to include a simple formula for a salinity dependent
895       freezing point of sea water at the surface
896     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
897       meridional stresses are now different (and hopefully correct)
898    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
899       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
900       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
901    o pkg/diagnostics: add options and parameters for regional-statistics
902       diagnostics ; define regions by reading a region-mask from a file
903       (might add other options later)
904    o pkg/bulk_force:
905     - add option and parameters to use AIM surface-flux formulae.
906     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
907       others forcing fields (defined in PARM05, parameter file "data") are loaded
908       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
909     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
910     - use the right EXCH call for uwind,vwind (to work on CS-grid).
911     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
912       and parameters (note: calcWindStress replaces .NOT.readwindstress).
913     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
914    
915    checkpoint58
916    o add "--embed-source" option to genmake2 which, when the supporting
917      tools can be compiled (as determined by genmake2) will turn on the
918      embed_files package which then embeds the entire MITgcm source code
919      (*.[fFhc] + Makefile) used for the build within the executable
920      - requested by CNH but off by default
921      - adds a paltry <9MB to the mitgcmuv executable in most cases
922      - only writes the output when useEMBEDSRC in eedata is true
923    o clean up 3-dim. relaxation codes:
924      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
925      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
926      * Thanks to Tom Haine for testing!
927    
928    checkpoint57z_post
929    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
930      affects output (@ truncation level) of exp. plume_on_slope ; updated.
931    o fix the pickup behavior for obcs in combination with ptracers
932    o fix a bug in ptracers_external_fields_load
933    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
934      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
935    o transfered surface NH pressure to eta field (if exactConserv).
936    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
937         and update lab_sea output.txt file.
938    o completing 3-dim. relaxation code: additional term
939         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
940      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
941      * At compile time, in "EXF_OPTIONS.h" set
942          #define  ALLOW_CLIMTEMP_RELAXATION
943          #define  ALLOW_CLIMSALT_RELAXATION
944      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
945          tauThetaClimRelax3Dim = 15552000.0,
946          tauSaltClimRelax3Dim  = 15552000.0,
947      * 3 cases:
948          1) Use a constant-in-time 3-dim. field
949          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
950          3) Real-time relax. to time-evolving prescribed field
951    o Adding Laplacian-type smoothness constraint on
952      initial and boundary (forcing) controls (ic, bc)
953      * enable at compile-time via
954        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
955      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
956      * Absolute scale somewhat unclear so far
957      * no area weighting was included since no other cost term does so far
958    
959    checkpoint57y_post
960    First step for a NLFS adjoint
961    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
962    o new init. routines for calc_r_star, calc_surf_dr
963    o still need to deal with ini_masks_etc
964    o testreport seemed happy
965    checkpoint57y_pre
966    
967    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
968    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
969    o add new offset feature to offline pkg (plus minor cleanup)
970    o cfc fixes for final year of integration
971    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
972      be in GCHEM_OPTIONS).
973    
974    checkpoint57x_post
975    o fix testreport Pb in multiple test experiment.
976    o cleanup our namelist syntax in verification:
977      - make it more F95 standards compliant (some work still needed)
978      - allows the vast majority of our tests to work with gfortran
979    o Non-Hydrostatic:
980     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
981     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
982    o Allow to apply AB on T,S rather than on AB(gT,gS):
983     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
984     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
985       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
986     - need a "clever" read_pickup to restart from the other AB formulation
987    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
988    o remove some unused variables (reduces number of compiler warnings)
989    o adjoint
990      * Disable useVariableViscosity for adjoint for time being
991        (there are a number of extensive recomputations)
992      * Initialize certain variables needed for adjoint
993    
994    checkpoint57w_post
995    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
996                 fix the singleCpuIO RS version of MDSWRITEFIELD
997       and add a WARNING if using globalFiles=T with multi-processors.
998    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
999      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1000    o tracer advection scheme:
1001      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1002       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1003       was not very convenient).
1004      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1005       (further tests needed for the implicit DST & Flux-Limiter schemes).
1006    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1007      and sRef for convenience, handy, when you want to initialize
1008      ptracers in a large domain with a constant non-zero value. Also,
1009      untangle ptracers_init.F a little.
1010    
1011    checkpoint57v_post
1012    o change dome exp. to use variable viscosity in side-drag terms.
1013    o remove all the files from the cfc_offline test since they are now
1014      incorporated into tutorial_cfc_offline which has been producing
1015      identical results for a few days of testing
1016    o add new parameter: sideDragFactor to enable half-slip-side BC
1017      and change side-drag S/R to use viscosity from mom_calc_visc
1018      (can switch back by setting sideDragFactor=0.); affects results at
1019      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1020       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1021    o vorticity & strain are now computed without masking, to account for
1022      no-slip-side BC in variable viscosity calculation ; mask is applied
1023      anyway later on, before computing advection/coriolis terms.
1024    o modify exp4 to test new obcs support for reading from external files
1025      and for passive tracers
1026    o fix behavior of ptracers_monitor when monitor output is written to a
1027      netcdf-file; still not independent of monitor.F (writes in the same
1028      file).
1029    o change default value of tRef (put a uniform, meaningful value for ocean
1030      & atmos) and initialize sRef (was missing, as Martin mentioned).
1031    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1032      to be proportional to enstrophy dissipation length.  Thus,
1033       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1034      This is now consistent with Smagorinsky and with the manual.
1035    
1036    checkpoint57u_post
1037    o OBCS and PTRACERS: add open boundary support for passive tracers
1038      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1039        OB-values from file; this is not different from the way theta and salinity
1040        are treated
1041      - however, Orlanski-radiation conditions are not supported, and the model
1042        will stop if you use pTracers and Orlanski at the same time.
1043      - beefed up the rountine obcs_external_fields_load: now only those open
1044        boundary values are overwritten with values from files for which there
1045        are really files, otherwise the OB-fields remain untouched. This makes
1046        it possible to use different OBs at different ends of the domain (as
1047        with EXF)
1048    o reduce number of exch calls in shap_filt (s2).
1049    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1050      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1051    
1052    checkpoint57t_post
1053    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1054    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1055      same truncation, independent of the face number: affects affects several
1056      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1057    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1058      note that biharmonic viscosity + no-slip was not tested in any experiment.
1059    o fix bug in non-linear free-surf side-drag ; generate new output for
1060      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1061    o make mnc honor the writeBinaryPrec flag for most kinds of output
1062    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1063    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1064      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1065    o add brackets in multi-terms sum to get same truncation, independent of
1066      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1067      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1068    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1069      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1070      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1071      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1072      Suggested values of viscosity parameters found in mom_calc_visc.
1073      Many new viscosity diagnostics available.
1074    
1075    checkpoint57s_post
1076    o Add clearing-house for viscosity calculations, mom_calc_visc and
1077      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1078      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1079      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1080      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1081      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1082      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1083      ViscAhStrain and viscAhTension are now retired.
1084    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1085    o In response to JMC's bug report, genmake2 now ignores any soft-links
1086      that it finds in the *current* directory when searching for files.
1087      Soft-links found in any other source directories will still work as
1088      they did before.
1089    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1090      a C routine to unlimit the stack size
1091    o mnc-ify pkg/aim snapshot vars
1092    o mnc-ify pkg/land as requested by Daniel
1093    o various changes to mnc including:
1094      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1095      - output can now be grouped so that all files within a group
1096          change the ITER portion of their names in lock-step together
1097      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1098          and works with both EXCH1 and EXCH2 (but needs more testing)
1099      - writing works for all verification test cases w/ g77 on Linux
1100    
1101    checkpoint57r_post
1102    o make MNC variable initialization happen earlier
1103    o add diagnostics for (almost) each term of the momentum Eq.
1104    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1105    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1106    o remove MINIMAL_TAVE_OUTPUT option ;
1107      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1108    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1109      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1110    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1111    o add time-dependent SST, SSS control
1112    o cost terms in ecco/ modularized (new cost_generic.F)
1113    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1114    o new infrastructure for seaice model vs. obs misfits in seaice/
1115      * driver from the_main_loop.F is seaice_cost_driver.F
1116      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1117      * gradient check in Exp. 6a of natl_box_adjoint/
1118    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1119      (see README file)
1120    
1121    checkpoint57q_post
1122    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1123    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1124      - bug was reported by Jean-Michel and Ian Fenty
1125    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1126      update exp. cpl_aim+ocn output.
1127    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1128      Needed for high-res. runs with large global files
1129      to be able to limit tapelev size
1130    o Changed some tests for adjoint:
1131      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1132      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1133      * global_ocean.90x40x15/ back to default 3-level checkpointing
1134    o Modifications to enable scripted COMMON to MODULE conversion
1135      * verification/OpenAD/code/ has necessary scripts and description;
1136      * converts, compiles and runs successfully;
1137    
1138    checkpoint57p_post
1139    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1140    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1141      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1142    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1143    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1144      (was already the case for dissipation with mom_vecinv,
1145       and also the case for grad.PhiHyd when staggered-timeStep)
1146      This will allow to put dissipation out-off the AB time-stepping.
1147     Unfortunately, affects truncation error. Update output of exp. that "fails"
1148      (cg2d matching number) and leave the others for later: front_relax(10),
1149      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1150      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1151    
1152    checkpoint57o_post
1153    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1154      (2) its ready to be documented during the 20050801 DocFest
1155    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1156      for ideal_2D_oce and lab_sea on linux_ia32_g77
1157    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1158      in global1x1_tot/code_seaice_adj to access indices 32, 33
1159      (worth another tag)
1160    
1161    checkpoint57n_post
1162    o adding precip control xx_precip 32
1163    o adding swflux control xx_swflux 33
1164    o Replacing 10 forcing penalty cost routines by 1 generic.
1165    o Implementing partitioning in time-mean and variable adjustment
1166      for atmos. state.
1167    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1168    o in natl_box_adjoint:
1169      * updated exp 1 to 10
1170        (but does not have time-mean vs. variable split results yet)
1171    o updated global1x1/*_seaice_adj/
1172      to incorporate latest changes
1173    o enable useSingleCpuIO for mdsio vector routines
1174      (applies in particular to tapelev I/O)
1175    o removed inefficient K-loop in all active_file*control*.F
1176    
1177    checkpoint57m_post
1178    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1179      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1180    o pkg/exch2: filling of face-corner halo regions is optional
1181      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1182    
1183    checkpoint57l_post
1184     tag before updating tutorials (pre-release-2)
1185    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1186       for output and interpolation of input fields onto model grid)
1187    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1188       Affects results of exp. rotating_tank ; update output.txt.
1189    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1190          and taking the square quantity and/or using a fraction-weight field.
1191    o fix aim_diagnostics_init.F mate numbers.
1192    o add mnc output capability to diagnostics/diagstat and update
1193      our cvsignore files for the ACSII output generated
1194    
1195    checkpoint57k_post
1196    o lab_sea now uses diagnostics package and provides a suite of
1197      new EXF diagnostics output.
1198    
1199    checkpoint57j_post
1200    o exf
1201      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1202        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1203        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1204      * extended diagnostics output
1205        - now includes all EXF variables
1206        - hs, hl moved to common block
1207        - separate S/R for diagnostics, called after ctrl vector is added
1208        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1209        - EXFqnet contains true Qnet (i.e. includes qsw)
1210      * updated verif. lab_sea, global_with_exf
1211      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1212        to ensure that diagnostics sees a true EXFqnet
1213    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1214    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1215      several times with different frequencies.
1216    o mnc-ify the thsice package as requested by Daniel Enderton
1217      - the monitor--MNC output needs work
1218      - many attributes need to be added (most are currently blank)
1219    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1220      - many attributes need to be added (most are currently blank)
1221    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1222    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1223    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1224      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1225         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1226    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1227     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1228    
1229    checkpoint57i_post
1230    o Diagnostics package was changed: diagnostic allocation is now deactivated
1231      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1232    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1233      add 1rst Order upwind vertical Shear.
1234    o add a quick fix for A/B checkpointing in OFFLINE mode
1235    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1236      end-run around the C/Fortran linking horror in eesup/src/timers.F
1237    o added pkg/runclock: allows user to terminate run based on wall clock
1238    o added non-hydrostatic scaling parameter: nh_am2
1239    o pkg/my82: futile attempt to make results compiler-independent by adding
1240      some "_d 0", etc. no effect.
1241    o for mnc output, fill the 'T' coordinate var with myTime and create a
1242      separate 'iter' variable for iteration count
1243    o pkg/diagnostics:
1244      add new capability: output of Global/Regional & per-level statistics ;
1245      tested against monitor output (including land & thSIce) on various exp.
1246    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1247    
1248    checkpoint57h_done
1249      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1250      data.diagnostics, data.gchem, data.ptracers) is done.
1251    
1252    o pkg/diagnostics: prepare for Global/Regional statistics.
1253      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1254    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1255      and rename it: DIFFERENT_MULTIPLE
1256    
1257    checkpoint57h_post
1258    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1259    o pkg/diagnostics: change output frequency, now in seconds (instead
1260      of Nb of iterations). This requires to change data.diagnostics.
1261    checkpoint57h_pre
1262    
1263    o in mnc, let the user create the output dir if both mnc_outdir_date
1264      and mnc_outdir_num are false
1265    o add fflags() to pkg/diagnostics which allows one to specify, on a
1266      per-file basis, the file precision [default behavior is unchanged]
1267    o added diagnostics to pkg/kpp, including computation of mixed layer
1268      depth based on a temperature/density criterion
1269    o updated verification/natl_box to test the new pkg/kpp diagnostics
1270    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1271    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1272    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1273      not mnc -- this mistake was found by JMC and is now corrected
1274    
1275    checkpoint57g_post
1276    o add Adams-Bashforth 3rd Order time stepping:
1277      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1278      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1279    checkpoint57g_pre
1280    
1281    o make lambda[Theta,Salt]ClimRelax spatially varying
1282      (default remains spatially uniform constant based on tau)
1283    o added new control variables
1284      * init. uVel, vVel, etanN
1285      * lambda[Theta,Salt]ClimRelax
1286    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1287      (suggested by G. Forget)
1288    
1289    checkpoint57f_post
1290    o add parameter "baseTime" = model base time = time at iteration zero
1291      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1292      account for baseTime shift
1293    o move Coriolis arrays from PARAMS.h to GRID.h
1294    checkpoint57f_pre
1295    
1296    o mnc-ifying the seaice package
1297    o introduced an alternative length scale calculation for use in the limiting
1298      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1299    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1300    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1301      as well as grad(vort3).  Made it compatible with both approximate form
1302      for the cubed sphere and full form of these gradients.  Added flag
1303      useFullLeith to select between approximate and full form.  
1304    o add "d0" in getcon.F to reduce differences between compilers/platforms
1305      update output.txt of exp. fizhi-gridalt-hs
1306    o change port_rand funtion to allow to set the seed.
1307    o fix obscure MNC bug involving conversion between reals and integers
1308      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1309        new version is now more standards-compliant
1310    o adjoint-related modifications
1311      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1312      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1313      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1314    
1315    checkpoint57e_post
1316    o Adding eddy stress controls a la Ferreira et al.
1317    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1318    
1319    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1320      update output.txt of exp. fizhi-gridalt-hs
1321    o add more "Z" dimensions and associated coordinate vars to MNC
1322    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1323    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1324      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1325      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1326      months and years.  Requires pkg/cal.
1327    o diagnostics: add pickup functionality
1328      - off by default for backwards compatibility
1329      - current version only uses MDSIO -- MNC will be added
1330    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1331    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1332    
1333    checkpoint57d_post
1334    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1335    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1336      output from the diagnostics package
1337    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1338    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1339      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1340    o add coordinate variables to the MNC output from the diagnostics package
1341    o change MNC-flags default value: true when useMNC=TRUE
1342    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1343      the ability (off by default) to read the grid information using MNC
1344    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1345    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1346    o do snap-shot diagnostics at the middle of the time-interval (instead of
1347      at the end).
1348    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1349      new test for AIM with thSIce + slab-ocean
1350    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1351    o move state variable diagnostics to the beginning of the time step ;
1352      (note: still needs some work specially for snap-shot diagnostics)
1353      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1354    
1355    checkpoint57c_post
1356    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1357    o generate new output.txt files on faulks with g77 & the new -ieee option
1358    checkpoint57c_pre
1359    
1360    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1361      update output.txt of exp. global_ocean.90x40x15
1362    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1363      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1364    o add saltFlux(+File) forcing capability with periodicExternalForcing
1365    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1366    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1367    o improvements for the MNC output from DIAGNOSTICS:
1368      - correct handling of the unlimitied dimension
1369      - all dims now have associated coordinate variables
1370      - variables located at U, V, and Corner ("Z") points are now written
1371        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1372        *all* data points are output
1373    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1374    o added pkg/seaice/seaice_monitor.F
1375    o mdsio_readfield.F can now read files visible only to master MPI process.
1376    o pkg/seaice: some test code for ice-modified ocean stress
1377    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1378      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1379      spurious negative numbers for precipitation and humidity.  Will cause
1380      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1381    o pkg/ctrl/
1382      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1383        May be enabled via doPackDiag
1384      *  introduce z-scaling of
1385         + gradient (doZscalePack) and
1386         + control (doZscaleUnpack)
1387    o pkg/mdsio/
1388      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1389      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1390    
1391    checkpoint57b_post
1392    o simplify options in diagnostics_fill arguments (remove weird combinations)
1393    o fix MNC coordinate variables so that they now contain per-face index
1394      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1395      general, EXCH2 grids are only aligned to a "local" coordinate system
1396    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1397    o Implement instantaneous output within pkg diagnostics:
1398      setting a negative frequency in data.diagnostics produces
1399     "snap-shot" output (as opposed to time-average if freq > 0)
1400    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1401      NOTE: change ptracer diagnostics name: use 2 characters to work with
1402            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1403    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1404      becomes the coordinate variable for the 'T' dimension
1405    o add CF-style coordinate variables to MNC
1406      - just a first cut:  numbers are meaningless on the cubesphere and
1407        missing along the T axis but otherwise it works!
1408    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1409    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1410    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1411      this is based directly on what the model compute, so that the content of
1412      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1413    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1414    o clean up build options files for SunOS, in particular
1415      - remove -traditional from xmakedepend
1416      - change -xarch=v9 to -xarch=native for f77
1417      - restore use of make (not gmake)
1418      - add CC=gcc if using g77
1419    o changes per discussion of AM, JMC, & EH3 today:
1420      - move redundant "grid" variables out of "state" -- in preparation of
1421        creating proper CF-style coordinate variables and in recognition
1422        that any/all grid variables can be easily copied (eg. w/NCO) from
1423        the grid files into any of the other NetCDF files
1424      - *always* output grid variables with MDSIO (this will eventually be
1425        changed)
1426      - output MNC grid file if useMNC is true
1427    o every instance of _END_MASTER() has been found and replaced with
1428      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1429      preprocessors
1430    o re-arrange diagnostics pkg initialisation:
1431     - allow each package to extend the available diagnostics list
1432     - add some checking and fix small problems (multi-threaded, ...)
1433     - new S/R diagnostics_fill (replace fill_diagnostics):
1434       look through the short list of active diag. (instead of the long list)
1435       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1436    
1437    checkpoint57a_post
1438    o this set of changes restores TAMC compatibility
1439      tested for global_ocean.90x40x15 adjoint on trough
1440      (what a pain)
1441    
1442    checkpoint57a_pre
1443    o some modifs in tools/build_options for sunos
1444    o call ctrl_pack for ctrl at end for optimcycle=0
1445    
1446    checkpoint57
1447    o add horizontal bi-harmonic viscosity for vertical velocity
1448      - new parameter viscA4W (defaults to viscA4)
1449      - affects only non-hydrostatic code
1450      - to be done: no-slip lateral boundary conditions
1451    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1452    o implement Implicit Vertical advection for pTracers
1453    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1454      (implemented also for implicit vertical diffusion & advection)
1455    o OBCS: extend application of tracer open boundary conditions
1456      to a strip beyond the boundary of width Olx/Oly
1457    o add call monitor to TAF set of required calls (flow directives)
1458      and include in natl_box_adjoint
1459    o untangle a few ifdefs related to cost, ctrl, autodiff
1460      untangel a few ALLOW_ECCO_OPTIMIZATION
1461    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1462      (theta2, salt2 in ecco_cost_weights)
1463    
1464    checkpoint56c_post
1465    o OBCS as control variables
1466      - update ctrl_ad_diff.list, obcs_ad_diff.list
1467      - remove balance of obcs controls from default
1468      - fix index bug nobcs in ctrl_init
1469      - fix dummy fields filen in ctrl_pack
1470      - add dummy weights for obcs
1471    o lsopt: comment out fort.94 output
1472    o optim:
1473      - remove unnecessary header files
1474      - adjusted namelists
1475      - add xerbla.F to Makefile
1476    o exf:
1477      - multiple modifications of exf_check_range
1478      - unit change in exf_init_runoff from [m/year] to [m/s]
1479    o mdsio:
1480      - i/o-vector change debugLevel from debLevA to debLevB
1481    
1482    checkpoint56b_post
1483    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1484      is called from DO_THE_MODEL_IO
1485      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1486      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1487      - clean up PTRACERS_WRITE_TIMEAVE a little
1488    o add another verification experiment that tests both the cfc-pkg and
1489      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1490      reactive tendencies treated inline with regular timestepping
1491    o testreport previously did a lousy job of comparing small numbers, so
1492      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1493      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1494      testreport.
1495    o ptracers_monitor: bug fix for MPI
1496    
1497    checkpoint56a_post
1498    o GCHEM: finish reorganizating the package
1499      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1500        (introduces another 3D-array for each passive tracer, but only if
1501        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1502        gchemTendency is not needed because the timestep is done separately)
1503      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1504      - GCHEM is now---more or less cleanly---separate from PTRACERS
1505      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1506        so clear to me how that should be done in a general way.
1507    o CFC: improve formatting of output in CFC_ATMOS
1508    o PTRACERS:
1509      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1510        that ALL experiments with ptracers enable can be checked. This makes
1511        GCHEM_MONITOR obsolete.
1512      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1513        monitorFreq
1514      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1515    o add PTRACERS (PTR0[1-5]) to testreport output
1516    o exf_check_range:
1517      * default changed to .TRUE.
1518      * will check values for niter0 if debLevA, every timestep if debLevB
1519      * STOP in exf_check_range if 'out of range'
1520      * range chosen generous to allow for potential extema
1521      TBD: a version with stricter range
1522           permitted range would be runtime parameters
1523    o GMredi:
1524      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1525      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1526      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1527    o GCHEM:
1528      - move call to GCHEM_FORCING_SEP, so that it is now called before
1529        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1530      - introduced a useGCHEM runtime flag and applied it everywhere.
1531      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1532        this flag is now only visible within GCHEM-pkg routines.
1533      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1534        be replaced by a 3D array that is computed before thermodynamics; for
1535        this, the tracer ID iTracer had to be included into the parameter list
1536        of ptracers_forcing
1537      - set up forward_step to call gchem_forcing, that will replace
1538        gchem_forcing_int in ptracers_forcing
1539      - cleaning up
1540    o small cleaning of exch2: remove files that are also in eesupp/src
1541    
1542    checkpoint56
1543    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1544    o mnc: cleanup "full" files--fixes out-of-memory problem
1545    o ECCO-GODAE
1546      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1547      * fully merged and updated from SIO code
1548        windstress sign change affects
1549        - exf_inscal_[u/v]stress
1550        - sign of xx_tau[u/v] adjustments
1551        - signs in cost_scat
1552      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1553      * natl_box_adjoint updated and compressed
1554      * 2-level checkpoint switch added
1555        (tested in EXP. 1 of natl_box_adjoint)
1556      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1557    o SVD
1558      * first complete, non-hacked version for SVD calculations
1559      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1560        performed via direct access files admtlm_vector.it????
1561        (via ctrl_[un]pack)
1562      * optimcycle is used for ARPACK iteration counter
1563        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1564      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1565        and add linear transforms where necessary
1566      * controls are initial/final SST, SSS (can be extended; need to check
1567        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1568    o mdsio: filename info to both stderr, stdout
1569    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1570      from sign change
1571    
1572    checkpoint55j_post
1573    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1574      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1575    o add consistent build directories and .cvsignore files to verification
1576    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1577    o make all subroutines 30 or less characters in length for certain older
1578      compilers to work (a thorough search only turns up two routines in
1579      pkg/ptracers)
1580    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1581      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1582    
1583    checkpoint55i_post
1584    o change arrays for total vertical diffusivity (2.D if explicit,
1585      3.D if implicit) ; each ptracer uses its own background value.
1586    o added mnc/NetCDF output capability to ocn_compon_interf
1587      - added bits to verification/cpl_aim+ocn so that it can run on
1588        ITRDA and other clusters without the mpirun "-wd" option
1589    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1590      configuration
1591    o give MNC the ability to create additional files rather than
1592      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1593      - the default is just less than 2GB which is a practical limit
1594        on many systems
1595    o Compute the non-local term using either KPP vertical diffusivity (=default)
1596       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1597    
1598    checkpoint55h_post
1599    o add verification test "vermix"
1600    o remove all the *_ioinc flags and replace with the single global
1601      outputTypesInclusive flag
1602    o allow to set a vertical profile of vertical diffusivity for T & S
1603    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1604    o useMNC moved from data.mnc to data.pkg
1605    
1606    checkpoint55g_post
1607    o Renaming carbon AD experiments to comply with testreport conventions
1608    o Updating adjoint of Held-Suarez hs94.1x64x5
1609    o Fixing directives for non-ECCO forward_step, after ECCO directives
1610      have been fixed to avoid recomp. of do_oceanic_phys
1611      Works well for global_ocean.90x40x15,
1612      but recomp. issue remains for carbon
1613    o Updating adjoint output for natl_box_adjoint after
1614      pkg/ecco has been modified (see taga c55d_post)
1615    
1616    checkpoint55f_post
1617    o rename to timeave_init_fixed
1618    
1619    checkpoint55e_post
1620    o some delicate re-shuffle of store directives to avoid one
1621      extra call of do_oceanic_physics
1622      affects ecco_the_main_loop.F, do_oceanic_physics.F
1623      checkpoint_lev1_directives.h
1624    o NB: this may break global_ocean adjoint temporarily,
1625      but it is clear how to fix it. Will do later, need this now.
1626    
1627    checkpoint55d_post
1628    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1629    o ecco_cost_weights is modified to 1x1 runs
1630    o modifs to allow observations to be read in as
1631      single file or yearly files
1632    o enable to read exf forcing fields as either
1633      single file or yearly files (flag useExfYearlyFields)
1634    checkpoint55d_pre
1635    
1636    o switch between 2-level and 3-level checkpointing
1637    o add ability of MNC to write local and "partial" (eg. 2D slices where
1638      the full 3D field is never actually stored) arrays to NetCDF files
1639      with the correct (that is, the complete multi-dimensional) set of
1640      array indicies
1641      - used in mom_vecinv() to write the diagFreq output
1642      - tested (demonstrated) in verification/aim.5l_cs
1643    o further mnc-ification
1644      - add verification/lab_sea to the list with mnc setups
1645      - fix undefined mnc v-names in cd_code
1646      - add kpp to mnc output (both snapshot and timeave)
1647    o non-hydrostatic code
1648      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1649        in calc_gw.F
1650      - defaults to viscAh
1651      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1652        friction or Leith) in non-hydrostatic mode, as long as there is
1653        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1654    o pkg/cost
1655      extend simple cost functions to treat time mean quantities
1656      (T,U,V) via cost_accumulate_state from cost_tile
1657    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1658        be 2 times larger than the minimum size the advection scheme requires.
1659        now get a perfect conservation of salt in advect_cs test-exp (updated)
1660    o GGL90 (Gaspar's TKE mixed layer)
1661      - add horizontal diffusion of TKE, requires exchanges in
1662        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1663        default. In OPA there is no horizontal diffusion of TKE but the
1664        mixing coefficients are computed from a horizontal average of TKE of
1665        6 points or so. I think that diffusion has a little more physical
1666        justification.
1667      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1668        was in vain)
1669      - mask tke-variable in ggl90_init
1670    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1671    o fix biharmonic diffusion on CS-grid.
1672    o more obcs stuff
1673      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1674        for reading boundary values. This routine is called from
1675        obcs_prescribe_read
1676      - updated obcs_check
1677      - changed sponge layer relaxation parameter units for days to seconds
1678      - turned off sponge layer by default
1679      - changed argument list of OBCS_CALC to myTime+deltaTclock
1680      - fixed about 35 bugs in obcs_external_fields_load
1681    
1682    checkpoint55c_post
1683    o obcs stuff
1684      - new runtime flags useOBCSprescribe, useOBCSbalance
1685      - re-arranged obcs_calc
1686      - moved exf_getobcs to obcs_prescibe_read
1687        obcs_prescibe_read is called after ORLANSKI stuff
1688        and independent of it (executable can contain all).
1689      - updated obcs_check
1690      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1691        These may be necessary only if tangential velocities are
1692        prescribed at OB, not sure, needs testing.
1693    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1694      which simplifies the calls and passes the ifc check-bounds test
1695    
1696    checkpoint55b_post
1697    o add a 2D scalar, Z location, exchange_2 routine.
1698    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1699      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1700      affects advect_cs results (for the wrong reason): update output.txt
1701    o use a more standard discretization for biharmonic viscosity ;
1702     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1703      affects results of dome set-up: update output.txt
1704    o fix gad_advection.F (CubedSphere part), back to version 1.23
1705    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1706    
1707    checkpoint55a_post
1708    o merged code to
1709      * prescribe/read time-dependent open boundaries
1710        (works in conjunction with exf, cal)
1711      * sponge layer code for open boundaries
1712      * each boundary N/S/E/W now has its own CPP option
1713        (healthy for the adjoint)
1714    
1715    checkpoint55
1716    o up-to-date adjoint of previous breaks
1717      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1718      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1719      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1720      - carbon: * remove tr1-related adjoint verification
1721                * add ptracer as control variable
1722    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1723      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1724    
1725    checkpoint54f_post
1726    o in verification/carbin/ remove experiment related to
1727      ALLOW_PASSIVE_TRACER (array tr1 etc)
1728      code_ad/ input_ad/ results_ad
1729    
1730    o add two new packages
1731      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1732        + subject to optimization (memory)
1733      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1734        + subject to reordering (many GOTOs in the original code)
1735        + so far opps is called for every (i,j) point, and then operates in
1736          the vertical; one may want to reorder the scheme in order operate in
1737          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1738          fields)
1739    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1740      - all verification tests compile and run with linux_ia32_g77
1741      - defaults are compatible with current input files--nothing
1742        should change if you were not previously using MNC
1743      - MNC output has been added in numerous places (eg. timeave)
1744        but there are still a few writes not yet do-able with MNC
1745        (this is in progress)
1746      - flags now allow for either/or/both use of MDSIO and MNC and
1747        documentation will soon follow
1748      - numerous small formatting cleanups for ProTeX
1749    o add version info (via BUILD_INFO.h) to MNC and stdout
1750    
1751    checkpoint54e_post
1752    o add two new packages
1753      - pp81 (Packanowski and Philander, 1981), Richardson number and
1754        stratification dependent mixing
1755      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1756      - these scheme operate in a similar manner as KPP (without ghat, of
1757        course), however there is only one diffusivity that is used for both
1758        temperature and salinity (and passive tracers)ç
1759    o add offline package
1760    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1761      provided by Stephanie Dutkiewicz
1762    o genmake2: add ability to search for C compilers and cleanup test output
1763      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1764    
1765    checkpoint54d_post
1766    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1767    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1768      leading to additional shift by 5 days each year of integration
1769       (i.e. leading to considerable offset over the years)
1770    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1771    o start with no AB and no initial filtering (staggerTimeStep):
1772      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1773    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1774      (external loading & cpl import/export stay in forward_step.F)
1775    o update coupling interface to work with new staggerTimeStep
1776    o change MDSIO ptracers_pickup.
1777    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1778    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1779    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1780    
1781    checkpoint54c_post
1782    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1783      this affects (truncation error) output.txt of test-exp:
1784       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1785    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1786    o change Qnet to always be the net heat flux, (+upward).
1787      affects (truncation error) output of natl_box exp.: updated
1788    o define the max number of passive tracers in PTRACERS_SIZE.h
1789    o start to test mnc routinely in exp0
1790    o add sea-ice loading (sIceLoad) as a new forcing field.
1791    
1792    checkpoint54b_post
1793    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1794       impressive on Altix and Opteron systems)
1795    o diagnostics can now write NetCDF files through the mnc package
1796    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1797    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1798    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1799      affects (truncation error) output of lab_sea & natl_box exp.: updated
1800    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1801    
1802    checkpoint54a_post
1803    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1804    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1805    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1806    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1807      + internal_wave (shift in writing cg2d_ini_res)
1808    checkpoint54a_pre
1809    
1810    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1811      - modified verification/lab_sea and natl_box_adjoint accordingly
1812    
1813    checkpoint54
1814    checkpoint53g_post
1815    o prepare splitting of thermodynamics: store convect.counter in common block
1816    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1817      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1818    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1819    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1820    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1821    o restore adjointability
1822    
1823    checkpoint53f_post
1824    o modifications that affect AIM experiment results (update output.txt):
1825      - no advection of S at top interface Nr (pkg/generic_advdiff)
1826      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1827    o AIM pkg:
1828      - include stability function into surf.Flux derivative relative to Tsurf
1829      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1830    
1831    checkpoint53e_post
1832    o merged cylindrical coord configuration
1833    o added rotating_tank experiment
1834    checkpoint53e_pre
1835    
1836    checkpoint53d_post
1837    o faulks upgraded: re-generate output.txt that have changed:
1838       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1839    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1840    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1841    o added Sadourny discretization of Coriolis
1842      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1843      - re-enabled use of omega3 (useAbsVorticity)
1844    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1845      vector-invariant equations
1846      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1847    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1848      hopefully without new bugs
1849      - still to do: biharmonic friction for non-hydrostatic w
1850    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1851    o regenerated output for global_ocean_ebm (using -ieee)
1852    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1853      of mom_common/
1854      - simple re-arrangement of instructions within computing loop
1855    checkpoint53d_pre
1856    
1857    checkpoint53c_post
1858    o new version of coupler for AIM+thSIce and Ocean models
1859     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1860     - land: change Evaporation of snow
1861     - aim with thSIce: fix bug in snow-precip.
1862    o changes to calc_gw.F
1863     - bug fix for w^2 term near the bottom boundary
1864     - (hopefully) improve the lateral slip boundary condtions for use with
1865        partial/looped cells
1866      - because the bug fix changes two verification experiments anyway (exp5
1867        and plume on slope), change the lateral boundary condition from half slip
1868        to the value of no_slip_sides
1869    o ebm package wasnt quite up to the parallel task. Fixed that.
1870    o Adjoint of EBM package + verification
1871      * TLM OK
1872      * ADM not sufficient accuracy yet (needs further testing)
1873    
1874    checkpoint53b_post
1875    o Commiting new energy balance model to repository
1876      * package is pkg/ebm
1877      * verif. is verification/global_ocean_ebm
1878      * references are in ebm_driver.F
1879    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1880    C        Global thermohaline circulation. Part I:
1881    C        Sensitivity to atmospheric moisture transport.
1882    C        J. Climate 12(1), 71-82
1883    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1884    C        Global thermohaline circulation. Part II:
1885    C        Sensitivity with interactive transport.
1886    C        J. Climate 12(1), 83-91
1887    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1888    C        Destabilization of the thermohaline circulation
1889    C        by atmospheric eddy transports.
1890    C        J. Climate 7(12), 1870-1882
1891    o Will need long integration testing.
1892    checkpoint53b_pre
1893    
1894    o created pkg/mom_common in preparation for variable viscosity code
1895    o renamed and split ini_mnc_io
1896    o pkg/land: only liquid water can diffuse or run-off
1897    o AIM using land: soil wetness availability account for snow
1898    o added printMapIncludesZeros to EEPARMS namelist
1899    
1900    checkpoint53a_post
1901    o restore TAMC compatiility for exf_constants.h
1902      (no usage of _d in .h)
1903    o Additional storing in KPP in an attempt to fix
1904      TAMC problem with adjoint of KPP code.
1905      (no success...)
1906      Identical code works fine with TAF.
1907    o Fixed verification/natl_box_adjoint experiments.
1908      Initial conditions for Experiments 4 and 5 are now
1909      set to "SEAICE_initialHEFF=0", which is more reasonable,
1910      and hence gives results closer to that of Experiment 2.
1911      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1912    
1913    checkpoint53
1914    o stable checkpoint with up to date adjoint
1915      TLM tests only run for 1st grdchk at the moment. Its unclear if
1916      this is a code problem or a problem with resetting code for g_
1917      variables that is being autogenerated wrong.
1918      Otherwise:
1919       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1920       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1921         are both still in chaos following their security messes.
1922    
1923    checkpoint52n_post
1924    o various build (mostly genmake2) changes including:
1925      - ability to build/run more easily within Cygwin and MacOS X
1926      - more complicated Makefiles with a stronger dependence on Gnu Make
1927    o pkg/seaice modifications
1928      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1929        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1930        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1931      - changed proxy for geostrophic velocity and updated
1932        verification/lab_sea/results/* accordingly
1933      - removed ADI dynamic solver from pkg/seaice
1934      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1935        they caused a segmentation fault under certain circumstances
1936      - removed unused field WATR
1937    o bug fix in exf-package:
1938      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1939         now reflect that.
1940    o small fixes in the cal-package:
1941      - set reference date to first of January for the 'model'-calendar
1942      - failing of cal_CheckDate in cal_FullDate now actually results in a
1943        warning
1944    o small modifications in exf-package to increase flexibility:
1945      - change climtempfreeze from a constant to a runtime parameter that
1946        is specified in data.exf_clim (default = -1.9)
1947      - introduce runtime parameter windstressmax (default = 2.0) that is
1948        specified in data.exf
1949    o fix in pkg/thsice:
1950      - update Evap (Tsf changes) to be consistent with Latent heat flux
1951      - maintain snow precipitation unchanged (even if Tsf >=0).
1952     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1953    
1954    checkpoint52m_post
1955    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1956      this does not change any of the results, because myIter=0 in swfrac always
1957      lead to jwtype=2 (the default anyway), but the call makes little sense
1958      as a default
1959    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1960    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1961      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1962    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1963    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1964    o extending useSingleCpuIO option to work with new exch2 I/O format
1965      - old-style, missing-tile I/O is still accessible by defining CPP
1966        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1967    o monitor package can write to NetCDF files and/or STDOUT
1968    o fix re-definition bug in MNC_GRID_INIT_ALL()
1969    o doc/api_reference added
1970      - a framework for building an API Reference Manual using all
1971        the "protex" comments embedded in the code
1972      - see pkg/generic_advdiff, pkg/mnc for examples
1973    o MNC:
1974      - make myThid the last argument for all subroutines
1975      - new default for the grid files: NO halos
1976      - add useMNC and other run-time flags
1977      - separate per-file-group handling of the unlimited dimension
1978      - early initialization of MNC w/ flags read at the eeboot stage
1979        and lookup tables set in initialize_fixed
1980      - write all MNC output to a freshly-created directory
1981    o thermodynamics sea-ice (thsice) is now tested with testreport.
1982    o test exp. advect_cs: use the standard cs32 grid ; update output.
1983    o Added functionality to grdchk:
1984      pick global i,j,k position (or nearest wet) where to perform check.
1985    
1986    checkpoint52l_post
1987    o new land formulation:
1988      a) use ground enthalpy as prognostic variable to ensure exact
1989         energy conservation.
1990      b) account for water temperature and for latent heat of freezing
1991         in all processes (rain, run-off, ground storage)
1992      c) compute surface and ground temperature implicitly.
1993    o aim_v23 modification for new land model:
1994      a) Treat separately land / ocean / sea-ice surface fluxes
1995         to allow implicit computation of land & sea-ice surface temp.
1996      b) add snow precipitation.
1997    checkpoint52l_pre
1998    
1999    o fix problem (when 1 tile is empty) in min/max monitor.
2000    o fix bug in timeAve (u,vZetatave in common block)
2001    o no restoring terms under ice for pkg/seaice
2002    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2003    o bug fix for pkg/seaice pickups
2004    o change MNC call locations and add coordinate attributes
2005    o mask vorticity at the corner ; affects global_ocean.cs output
2006    o fix ini_curvilinear_grid ; test CS experiments with mpi
2007    o aim.5l_cs: modify sea-ice fraction input file ; update output
2008    o exf: Adding simple range check routine for exf fields after read
2009    
2010    checkpoint52k_post
2011    o removed top-level directory "diags"
2012      - we migrated these functions to pkg/timeave a long time ago
2013    o fixed bug introduced in pkg/monitor
2014    o accuracy ctrlprec = 32 insuffient for gradient checks using
2015      averaged fields (I/O via cost_averages)
2016      -> use ctrl.h in active_file*.F to control I/O precision.
2017    o paramter list of CALL ADTHE_MAIN_LOOP
2018    o added initial do_the_model_io to ecco
2019    o set all ...Freq to zero after cost_final
2020      taveFreq, dumpFreq, pChkptFreq
2021    o MAIN and ECCO differentiability restored
2022    
2023    checkpoint52j_post
2024    o fix nchklev in tamc.h for global_ocean...
2025    o Bringing flow and store directives up-to-date
2026    o Really weird thing!
2027      call do_the_model_io from the_main_loop with parameters
2028      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2029      TAF places a faulty re-call of initialise_varia
2030      after cost_final call which should not be there!
2031    checkpoint52j_pre
2032    
2033    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2034      error messages
2035    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2036    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2037      debug output
2038    o modfied mdsio_writefield.F to handle non-global files under exch2
2039    o update AIM Cubed-Sphere exp (aim.5l_cs):
2040      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2041    o update AIM Equatorial Channel exp:
2042      use standard aim_v23 pkg and change the SST fields to be more realistic.
2043    o globalFile now works with exch2
2044    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2045      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2046    o limit timeave output for hi-res integrations
2047    
2048    checkpoint52i_post
2049    o removed CPP_EEOPTIONS.h from verification/*/code
2050    o updated the tiling for global_ocean_pressure
2051    checkpoint52i_pre
2052    
2053    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2054      the old pkg/aim).
2055    
2056    checkpoint52h_pre
2057    o shortened offending lines in exch2_send_rx?.template
2058    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2059    o genmake2: add build & execute test for NetCDF code
2060    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2061      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2062    o added useSingleCPUIO flag to monitor.F and mon_out.F
2063    o added temporary hack for sea-ice dynamics on the cube:
2064      metric terms are ignored and it is assumed that
2065      there is no sea-ice on cube faces 1, 2, 4, and 5.
2066    
2067    checkpoint52f_post
2068    o added exch2 cube routines to pkg/exch2
2069    o modified hs94.cs-32x32x5 to use it
2070    o added new grid files to hs94.cs-32x32x5
2071    checkpoint52f_pre
2072    
2073    checkpoint52e_post
2074    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2075      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2076    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2077      to work with implicit vertical advection and AB ;
2078    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2079    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2080     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2081    checkpoint52e_pre
2082    
2083    o fix bug in impldiff when Nr=1 or Nr=2.
2084    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2085    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2086    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2087      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2088    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2089    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2090    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2091    
2092    checkpoint52d_post
2093    o re-tiled many expts to allow comparison in multi-processor mode
2094      - updated output accordingly
2095      - changed hs94.128x64x5 to use intial T from file rather than use the
2096        random number generator
2097    o add infrastructure in model routines for fizhi and gridalt packages
2098    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2099    o changes to permit hi-res, cubed-sphere, configuration
2100      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2101      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2102      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2103        of surface winds for the cube
2104      (A verification experiment, based on global_ocean.cs32x15, but with
2105       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2106       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2107       complete with example surface forcing files and matlab scripts to look
2108       at the output and compare it with that of global_ocean.cs32x15.)
2109    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2110       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2111       to conform to the common rule.
2112    o check-in the first version of the coupler + interfaces for multi-components
2113       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2114       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2115       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2116       - ocean and atmos. share the same horizontal grid (no interpolation).
2117       - exchanges between component and coupler is done in forward_step
2118    o new verification experiment, cpl_aim+ocn:
2119       coupled ocean - AIM atmosphere on cs32 grid.
2120    
2121    checkpoint52d_pre
2122    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2123    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2124    
2125    checkpoint52c_post
2126    o Fixing OPTIONS files for use of exf:
2127      - ALLOW_ECCO not needed
2128      - ECCO_CPPOPTIONS.h should not be included from
2129        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2130        as has been the case in the past
2131      - All cal/exf related options are currently set in
2132        single header file. Should remain so until we
2133        agree on a consistent new policy.
2134    o Removed all CPP options for cal package.
2135      cal has no more CPP options.
2136    o modified STOREs in GAD_ADVECTION
2137    o corrected key comp. for passkey
2138    
2139    checkpoint52b_post
2140    o new version: "thsice" of thermodynamic sea-ice pkg:
2141     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2142     - modify fluxes but do not change theta directly;
2143     - light cleaning of bulk_force pkg (still needed with thsice).
2144     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2145       + output_thsice.txt to test thsice & bulk_force pkgs.
2146    o put back grid & coriolis monitor output.
2147    checkpoint52b_pre
2148    
2149    o call "do_the_model_io" at the beginning (=> dump initial state)
2150    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2151    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2152      (need info on NUMBER_OF_PTRACERS)
2153    o missing PTRACERS headers in some routines
2154    o default tamc.h in pkg/autodiff supposed to crash
2155      to ensure proper customization
2156    
2157    checkpoint52a_post
2158    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2159      - moved surfaceTendencyTice from pkg/seaice to main code
2160      - subroutine FREEZE_SURFACE now limits only surface temperature
2161        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2162        => new output.txt for global_ocean.cs32x15 & global_with_exf
2163      - keep the old version of FREEZE for backward compatibility;
2164        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2165      - corresponding modifs for TAF directives
2166    o added surface flux output variables to TIMEAVE_STATVARS
2167    o time-averaged output for pkg/ptracers
2168    o fix problem with ECCO-related divided adjoint
2169      snapshot file was missing some ad-variables,
2170      but no warning issued by TAF
2171    
2172    checkpoint52a_pre
2173    o some bug fixes for #undef REAL4_IS_SLOW
2174    
2175    checkpoint52 = ecco_c52_e35
2176    o after testing adjoints of checkpoint51u_post
2177    
2178    checkpoint51u_post
2179    o this is the post-merge tag of the ecco-branch
2180      (needs another clean checkout and re-testing)
2181    o various natl_box_adjoint configs and results
2182      but no input fields
2183    o obcs adjoint not yet merged!
2184    o adding ECCO global 1x1 and 2x2 degree configs
2185    o updated/extended some store directives for seaice
2186    o pkg/ecco now containes ecco-specific part of cost function
2187    o top level routines the_main_loop, forward_step
2188      supersede those in model/src/
2189      previous input data.cost now in data.ecco
2190      (new namelist ecco_cost_nml)
2191    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2192    
2193    checkpoint51t_post
2194    o this is the pre-merge tag of the ecco-branch
2195    
2196    checkpoint51s_post
2197    o cleanup: removed various obsolete #define-s
2198    o pkg/grdchk
2199      - renamed 'ph-grd 3' to 'grad-res'
2200      - merged from ecco-branch
2201        (remaining bug fixes for obcs gradient checks)
2202      - additional high-precision output for testreport
2203        (grep for 'precision_grdchk_result')
2204    
2205    checkpoint51r_post
2206    o cleaned up or removed CPP_OPTIONS.h files
2207    o updated results for some of the tests to reflect the new
2208      optfiles (-ieee: -O0 instead of -O3)
2209    
2210    checkpoint51q_post
2211    o cd_code:
2212      - moved cd_scheme.F -> cd_code_scheme.F
2213      - separate read_checkpoint from cd_code_ini_vars.F
2214      - separated cd_code part from write_checkpoint
2215      - updated AD_SOURCE, generated .flow
2216      - added CD_CODE_VARS.h to the_main_loop
2217      - Moving cd_code specific store dir.s to pkg/cd_code
2218    o ctrl package totally restructured
2219      - pack/unpack now optional and decoupled from
2220        xx_/adxx_ I/O
2221      - ctrl_pack/unpack cleaned
2222        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2223      - confined inclusion of AD_CONFIG.h to where necessary.
2224    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2225    
2226    checkpoint51p_post
2227    o create initial cd_code package
2228      - WARNING: the initialization of fields within packages
2229        is broken because INI_FIELDS (where READ_CHECKPOINT is
2230        called) is called *before* PACKAGES_INIT_VARIABLES.
2231        This seems to be backwards since
2232        1) its important to initially zero the entire field including
2233           the "halo" region
2234        2) zeroing needs to be done *before* reading pickup info
2235           and the pickup call might or might not happen in any
2236           particular run
2237      - this needs an overhaul for R2
2238    o cleanup verification/*/code/GMREDI_OPTIONS.h
2239    o cleanup testreport
2240    
2241    checkpoint51o_post
2242    o bringing AD-related verif's up to date with genmake2
2243      - carbon/
2244      - global_ocean.90x40x15/
2245      - hs.94.1x64x5/
2246      - (front_relax/ )
2247    o (more) consistent directory structure for AD-related verif.'s
2248    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2249    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2250    o bug fix in find_alpha.F for MDJWF:
2251      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2252        change rho -> rho-rhoConst
2253      - replace call find_rho to find_rhonum
2254    o initialisation of rFlx extended to full array (required by TAF)
2255      and shifted to thermodynamics
2256    o removed PTRACERS.h in ptracers routine
2257    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2258    o Correcting initialisations for fVerU, fVerV.
2259    o helping TAF to recognize dependency on kUp for
2260      fVerU, fVerV
2261    o Replacing delZ by delR in pkg/ctrl/
2262    checkpoint51o_pre
2263    
2264    o undid all of cp51 pending some cleanups and discussion
2265    o added the [#include "AD_CONFIG.h"] statement to all files that need
2266       it for adjoint/tl #defines
2267     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2268     o removed tools/genmake since it no longer works
2269    
2270    checkpoint51n_post
2271    o modifications to make FREEZE flux visible to pkg/kpp
2272      - moved surfaceTendencyTice from pkg/seaice to main code
2273      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2274      - subroutine FREEZE now limits only surface temperature
2275        (this means new output.txt for global_ocean.90x40x15,
2276         global_ocean.cs32x15, and global_with_exf)
2277    o added surface flux output variables to TIMEAVE_STATVARS
2278    
2279    checkpoint51n_pre
2280    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2281    o added [#include "AD_CONFIG.h"] to all files that use the following
2282      defines:
2283      - ALLOW_ADJOINT_RUN
2284      - ALLOW_TANGENTLINEAR_RUN
2285      - ALLOW_ECCO_OPTIMIZATION
2286    
2287    checkpoint51m_post
2288    o incorporating changes to get TAMC/TAF working in genmake2
2289      - added new TAMC/TAF targets to the Makefile
2290      - various cleanups related to package handling
2291      - these changes should have no impact on the forward model
2292    
2293    checkpoint51l_post
2294    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2295     - faster algorithm for cal_addtime.F
2296     - higher precision arithmetic, where needed
2297     - pkg/exf *startdate variables changed from calendar date to
2298       model integration time
2299    
2300    checkpoint51l_pre
2301    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2302    o enable to apply restoring on S & T only in a latitude band.
2303    o update output (external_forcing_surf modif. change truncation errors)
2304       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2305    
2306    checkpoint51k_post
2307    o change default to: useNHMTerms=.FALSE.
2308     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2309       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2310     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2311        exp1, ideal_2D_oce
2312     - change data file of oceanic exp (leave the results unchanged for now)
2313       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2314    o set gravitySign automatically according to the vertical coordinate used
2315      (and change sign: back to "logical" value: +1 when R increases downward)
2316    o added an include barrier to the default CPP_OPTIONS.h and
2317      removed the #include "PACKAGES_CONFIG.h" from it
2318    o fix a bug in mom_fluxform (from chk51j_post)
2319    
2320    checkpoint51j_post
2321    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2322    o adjusted some flow directives (dynamics, thermodynamics)
2323    o added cubed-sphere case to test cost function
2324    o heckpoint_lev?_directives.h now include
2325      pkg-specific directives, whenever those are enabled.
2326    o Moving pkg-specific flow directives to corresponding pkg
2327      Moving pkg-specific differentiation list to corresponding pkg
2328      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2329      ---> conventions are
2330           - pkg_ad.flow
2331           - pkg_ad_diff.list
2332           - pkg_ad_check_lev?_dir.h
2333    
2334    checkpoint51i_post
2335    o merge of the branch-genmake2
2336      - knowingly breaks the older genmake
2337      - automatic generation of all ALLOW_${PKG_NAME} defines
2338      - new testreport supersedes older testscript
2339    o large number of package inclusion and header cleanups
2340    checkpoint51i_pre
2341    
2342    o new output for adjoin of global ocean vector invariant
2343    o fix for checkpoint of thermodynamic seaice and bulk_force
2344    o Steph gchem various cleanups
2345    
2346    checkpoint 51h_pre
2347    o fixed some single quotes
2348    o modify gchem pkg to be more versatile
2349    o modifications to clean up dic pkg
2350    o add pkg/cfc
2351    
2352    checkpoint51g_post
2353    o provide links for ARPACK and ADM*TLM
2354    o start removing verification/vero/
2355    o update AD-related stuff
2356      (in particular some IF-statements in model/src/ routines)
2357    o adding to verification/global_ocean.90x40x15/ adjoint of
2358      vector invariant setup
2359    
2360    checkpoint51f_post
2361    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2362    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2363      of tracer Green's fucntions for ocean inversion project.
2364    
2365    checkpoint51f_pre
2366    o Added on-the-fly spatial interpolation capability
2367        "USE_EXF_INTERPOLATION" to pkg/exf.
2368      - This is a temporary Cartesian-grid hack until
2369        the super-duper ESMF coupler becomes available.
2370      - See verification/global_with_exf/README for usage example.
2371      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2372        flags and modified pkg/seaice accordingly.
2373    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2374        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2375        non-local transport term.
2376    
2377    checkpoint51e_post
2378    o pkg/mom_vecinv:
2379      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2380      - add time-ave diagnostic of vorticity advection.
2381    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2382    o atmospheric geopotential: - include water vapor effect;
2383                                - use p^kappa in p* scaling.
2384    o land pkg: read initial state from files.
2385    o AIM : add stratospheric drag in the upper level
2386    
2387    checkpoint51d_post
2388    o change function ILNBLNK (=> last non-blank char.) to return zero
2389      (instead of the string length) when the string. char is empty
2390    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2391    o modif's to restore TAMC compatibility
2392      - avoid "_d" constructs in PARAMETER declarations
2393      - avoid interrupting lines by comment lines
2394    o Use cluster local disks for purely local I/O
2395      vs. globally visible disks needed for ctrl stuff
2396      (merged from ecco-branch)
2397      - new active_file_loc... and mdsio_..._loc routines
2398      - affected packages: autodiff, ctrl, grdchk, mdsio
2399    
2400    checkpoint51c_post
2401    o introducing integer flag debugLevel
2402      - debLevZero: suppress all output
2403      - debLevA: standard
2404      - debLevB: equivalent to current debugMode=.TRUE.
2405    o introducing pathname variable mdsioLocalDir for mdsio
2406      that can be specified at runtime
2407      (relevant for cluster I/O to local disk)
2408    `
2409    >>>checkpoint51b_post
2410    adjoint of ptracers
2411    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2412    o extended state in checkpoint_lev?, etc.
2413    o alternative ctrl/cost with tr1 or ptracer
2414    o new comlev1_bibj_ptracers
2415    o new ptracers.flow
2416    o made ptracers_forcing same as external_forcing_s
2417    o added verification for adjoint with ptracers
2418      - adm. grdchk fail so far
2419      - tlm. grdchk OK
2420      - checked tapelev/comlev recomputations: OK
2421    <<<checkpoint51b_pre
2422    
2423    checkpoint51a_post
2424    o added code for biogeochemistry package
2425      - new pkgs: dic, gchem
2426      - new subroutine in ptracers
2427    o modify code for biogeo packages
2428      - in model/src and pkg/ptracers
2429    
2430    checkpoint51
2431    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2432      - autodiff, ctrl, exf, grdchk, seaice
2433      kept separate packages
2434      - cost, ecco, obcs
2435    o updating verification/internal_wave, verification/lab_sea
2436      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2437    
2438    checkpoint50i_post
2439    o Preparing next differentiable checkpoint and sync
2440      of MAIN vs. ecco-branch
2441      - 1st step: this one is differentiable
2442      - 2nd step: next(! not this) checkpoint will have updated packages
2443                  from ecco-branch)
2444    
2445    checkpoint50h_post
2446    o new package "land": provide surface BC for AIM.
2447    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2448    o AIM: use true log-P extrapolation for near surface temp (= as in
2449        F.Molteni paper) ; update aim.5l_cs output.
2450    o New variable in PARM03 for more flexible pickups
2451    o somewhat cleaned package initialisation sequence for
2452      ctrl/ cost/ ecco/ in packages_... routines
2453    
2454    checkpoint50g_post
2455    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2456      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2457      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2458        made the default because of faster convergence than ADI
2459    
2460    checkpoint50f_post
2461    o exf totally restructured
2462      - replaced all exf_set_ routines by one generic exf_set_gen.F
2463        and made sure it's still differentiable
2464      - split exf_getffields.F into new exf_bulkformulae.F
2465      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2466      - updated adjoint/makefile and relevant verif. accordingly
2467    
2468    checkpoint50f_pre
2469     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2470          + change Evap over land. (update aim.5l_cs output)
2471     o added missing .cvsignores and made uniform across expts
2472     o changed configuration of tidal_basin_2d expt
2473     o added pkg/debug functions for tracing code in fatal crashes
2474     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2475     o new fn in pkg/monitor to stop model if solution grows too big
2476     o removed lots of single quotes from comments
2477    
2478    checkpoint50e_post
2479    o make KPP work with PTRACERS
2480     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2481       nearly a copy of kpp_transport_s
2482     - there is no analogue to SurfaceTendencyS, so I have to use
2483       gPtr(of the surface layer) instead
2484    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2485    checkpoint50e_pre
2486    
2487    checkpoint50d_post
2488    o change kpp output from multiple-record state files to single-record state
2489      files analogous to write_state.F
2490    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2491      analogous to the cg2d-related output.
2492    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2493      so that writing to internal file fn (with length 512) fails.
2494    checkpoint50d_pre
2495    
2496    checkpoint50c_post
2497    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2498    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2499    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2500    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2501    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2502    
2503    checkpoint50c_pre
2504    Merging from release1_p13:
2505    o bug fix for pkg/seaice dynamic solver
2506    o Added SEAICE_initialHEFF to pkg/seaice
2507    
2508    checkpoint50b_post
2509    o store u*,v* in gU,V instead of in guNm1,gvNm1
2510    o in order to put the momForcing out of the Adams-Bashforth:
2511      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2512      to timestep.F
2513    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2514    o re-generate output for highly sensitive test-exp:
2515       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2516    
2517    checkpoint50b_pre
2518    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2519    o corrected CPP option mismatch in exf_Bulk... functions for case
2520      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2521    
2522    checkpoint50a_post
2523    o Bug fix for merging between c50 and KPP.
2524      ikey was passed from thermodynamics to kpp_calc via
2525      common block rather than being recomputed in kpp_calc,
2526      in contradiction with new key itdkey.
2527      New key ikppkey created, and tamc.h headers updated.
2528    
2529    checkpoint50
2530    - 2nd step of merge with ecco-branch:
2531      merge changes in ecco-branch back into main trunk
2532    - bug fix in find_alpha
2533    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2534    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2535    - merged some sliced AD support routines
2536    
2537    checkpoint49
2538    merged from ecco-branch:
2539    o exf:
2540      - Enable initialisation of forcing fields to constant
2541        (runtime) values.
2542      - in exf_getffields.F
2543        Reduce i-/j-loop to interior domain, discarding overlaps.
2544        That also fixes wrong TAF-key computations for key_1, key_2
2545        with bulf formulae.
2546      - exf_init.F modify #ifdef for exf_init_evap
2547      - exf_getffieldrec.F, ctrl_getrec.F
2548        The following INT-usages are not safe:
2549          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2550          fldcount = int(fldsecs/fldperiod) + 1
2551        and were modified.
2552    o autodiff: checkpoint_lev...
2553      - updated storing for bulk formulae (some arrays were missing)
2554      - added state for seaice package
2555      - synchronized with main branch
2556    o DIVA:
2557      Modif.s in
2558      - the_main_loop.F
2559      - the_model_main.F
2560      and added cost_final_restore.F cost_final_store.F
2561      o With these changes, it is possible to fully separate
2562        the first forward run to compute the cost function (mdthe_main_loop)
2563        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2564        into separate model executions.
2565        This enables better tuning of DIVA to given queue sizes.
2566      o Loss of cost function value in consecutive DIVA runs is
2567        fixed by storing to 'costfinal' file.
2568      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2569        beginning/end of adjoint integration is accounted for.
2570      The current changes apply to TAF-1.4.26.
2571      TAF has one remaining bug, requiring one manual change
2572      (see MITgcm manual).
2573    o cal: synchronized between MAIN and ecco-branch
2574    
2575    checkpoint48i_post
2576    o Changes to restore differentiability of code w.r.t. previous tag
2577      (mostly adding new routines to make list and replacing
2578      pressure by totPhiHyd).
2579    o Updated and merged grdchk package
2580      - has both ADM and TLM checks
2581      - works for single- and multi-proc.
2582      - output cleaned
2583      - worked successfully for parallel DIVA
2584    o genmake:
2585      - Adding -platform=SP4
2586      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2587    o Modif. for DIVA:
2588      ctrl_unpack should not be called in intermediate DIVA interval.
2589      (similar thing would apply for active files such as
2590      tbar, sbar, psbar, which should not be reinitialised;
2591      only relevant for ecco-branch)
2592    
2593    checkpoint48h_post
2594    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2595    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2596    o Added SEAICE_initialHEFF to pkg/seaice
2597    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2598    
2599    checkpoint48g_post
2600    --- EOS:
2601    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2602      store total Potential in totPhyHyd for diagnostics & EOS.
2603    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2604    --- Pressure/geopotential gradient:
2605    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2606    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2607      ( changes results of global_ocean_pressure )
2608    o NLFS + z-coord.: add eta*Rho' contribution.
2609    o accurate phiHyd when using interface-W at the middle between 2 centers
2610     ( changes results of ideal_2D_oce )
2611    o includes r* 2nd term in potential gradient.
2612    
2613    checkpoint48f_post
2614    Merging from release1_p12:
2615    o Modifications for using pkg/exf with pkg/seaice
2616      - improved description of the various forcing configurations
2617      - added basic radiation bulk formulae to pkg/exf
2618      - units/sign fix for evap computation in exf_getffields.F
2619      - updated verification/global_with_exf/results/output.txt
2620    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2621      (SBO) core products, including oceanic mass, center-of-mass,
2622      angular, and bottom pressure (see pkg/sbo/README.sbo).
2623    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2624      to avoid negative values in shallow regions.
2625      - updated verification/natl_box/results/output.txt
2626      - updated verification/lab_sea/results/output.txt
2627    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2628    o Added useSingleCpuIO option (see PARAMS.h).
2629    o Updated useSingleCpuIO option in mdsio_writefield.F to
2630      work with multi-field files, e.g., for single-file pickup.
2631    o pkg/seaice:
2632      - bug fix in growth.F: QNET for no shortwave case
2633      - added HeffFile for specifying initial sea-ice thickness
2634      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2635    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2636      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2637    o pkg/seaice:
2638      - adjoint-friendly modifications
2639      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2640    
2641    checkpoint48e_post
2642    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2643    o dynamics: change definition of computational domain & adapt mom_fluxform
2644      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2645    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2646        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2647        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2648        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2649        inverted_barometer solid-body.cs-32x32x1
2650      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2651    
2652    checkpoint48d_post
2653    o in preparation for r*:
2654     a) use pre-computed gradient of hydrostatic potential:
2655        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2656     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2657        => affects results of glob_oce_pressure (different truncation error)  
2658      update output.txt of ideal_2D_oce & global_ocean_pressure
2659    
2660    checkpoint48d_pre
2661    o in preparation for r*:
2662      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2663      pass the 2 comp. of the grad. as arguments to momentum S/R.
2664      but for the moment, only used if it does not change the results.
2665    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2666    
2667    checkpoint48c_post
2668    Modifications in treatment of initial flux forcing controls
2669    to avoid extra storing of flux fields.
2670    
2671    checkpoint48c_pre
2672    o Added tidal_basin_2d experiment (currently 1D!)
2673    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2674    
2675    checkpoint48b_post
2676    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2677     (modification to pressure gradient not yet implemented)
2678    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2679      (for U & V) that are used for vertical advection of momentum.
2680    
2681    checkpoint48a_post
2682    o In preparation for r*, use temp. array to compute vertical transport
2683       in flux-form momentum pkg. => change results of few test-exp.
2684      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2685                        lab_sea, natl_box & plume_on_slope
2686    
2687    checkpoint48
2688    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2689    
2690    checkpoint47j_post
2691    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2692    o moved adexch from forward_step to addummy_in_stepping
2693    o added exch in ctrl_map_...
2694    o aveFreq.=0. at end of cost_final to avoid overwrite in
2695      reverse checkpointing loop
2696    o Yet more changes in gmredi:
2697      * adgmredi_calc_tensor
2698        avoiding all recomputation of gmredi_slope_limit
2699      * adgmredi_x/y/rtransport
2700        added flag for excessive storing to avoid recomp. of
2701        u/v/rtans, dTdx/y/z
2702        -> this is not really necessary and very memory-consuming
2703      * adgmredi_slope_psi:
2704        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2705      * gmredi_slope_limit
2706        re-activated full calculation of taperfct for case 'ac02'
2707    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2708    
2709    checkpoint47i_post
2710    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2711    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2712      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2713    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2714    o gmredi: fix few bugs.
2715    
2716    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2717    This will be a good checkpoint to plug into the ecco-branch.
2718    o few modif.'s to get latest version adjointed
2719      (mainly kick out code in ini_linear_phisurf)
2720    o modif's to run adjoint with exactConserv
2721    o case GM_BOLUS_ADVEC should be cleaned
2722      S/R gmredi_slope_psi should be cleaned
2723    o verification/carbon now has exactConserv=.TRUE.
2724    
2725    checkpoint47g_post
2726    o time-average AIM output: becomes independent from statvars time-average
2727      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2728    o After TAF bug fix:
2729      Tested adjoint of gmredi package.
2730      Tests were done with checkpoint47 rather than with latest
2731      checkpoint47f_post since the latter is broken for the adjoint
2732      verification/carbon/ contains both ADM and TLM gradient checks.
2733    Here they are, before they get changed/lost/stolen.
2734    Mostly modif.'s to fix numerical sensitivities.
2735    Gradient checks OK for
2736    - GM_taper_scheme:
2737      * clipping
2738      * ac02
2739      * linear
2740      * glw91
2741      * dm95
2742      * ldd97
2743    - GMREDI_OPTIONS:
2744      * GM_VISBECK_VARIABLE_K
2745      * GM_NON_UNITY_DIAGONAL
2746      * GM_EXTRA_DIAGONAL
2747      * GM_BOLUS_ADVEC
2748    in conjunction with data.gmredi parameters to be checked in
2749    in a few minutes under verification/carbon/code/
2750    
2751    checkpoint47f_post
2752    Merging from release1_p10:
2753    o modifications for using pkg/exf with pkg/seaice
2754      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2755        and SEAICE_EXTERNAL_FLUXES
2756      - pkg/exf CPP options EXF_READ_EVAP and
2757        EXF_NO_BULK_COMPUTATIONS
2758      - usage examples are Experiments 8 and 9 in
2759        verification/lab_sea/README
2760      - verification/lab_sea default experiment now uses
2761        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2762    
2763    checkpoint47e_post
2764    o created a tag prior to creating a branch
2765    
2766    checkpoint47d_post
2767    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2768      at the bottom boundary had an erroneous half slip boundary condition
2769    o added bottom drag and no slip boundary condition capabilities to
2770      oceanic pressure coordinates code
2771    o added new verification experiment global_ocean_pressure, this experiment is
2772      also described in the tutorial section of the manual
2773    checkpoint47d_pre
2774    
2775    checkpoint47c_post
2776    o Added a verification experiment for a global cubed-sphere ocean run
2777      -  verification/global_ocean.cubed32x32x30
2778      -  uses pkg/therm_seaice and pkg/bulk_forcing
2779    
2780    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2781    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2782      when using P-coordinate; only implemented for atmospheric config.
2783    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2784      NOTES: requires option NONLIN_FRSURF to be "#define".
2785    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2786    
2787    checkpoint47b_post
2788    Merging from release1_p9:
2789    o pkg/seaice
2790      - removed GOTO's and added taf directives
2791      - double precision constants to reduce the g77 (Linux)
2792        to F77 (SGI) differences reported in release1_p8
2793    o tools/genmake
2794      - added SGI options
2795    o verification/testscript
2796      - updated to that of checkpoint47a_post
2797    o verification/global_ocean.90x40x15/input/eedata
2798      - modified for SGI f77 compatibility
2799    o verification/lab_sea
2800      - added description of sea-ice model
2801      - added missing matlab routines
2802      - added test of thermodynamics parallelization
2803    
2804    checkpoint47a_post
2805    o new pkg: aim_v23
2806     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2807       for now, keep the same surface forcing as before.
2808     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2809     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2810     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2811    o add diagnostic of surface correction term in monitor output
2812    
2813    o bulk_force and therm_seaice
2814    - Two packages:  bulk_force (Bulk forcing)
2815      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2816    - Earlier integration from Stephaine Dutkiewicz
2817      and Patrick Heimbach.
2818    - Two ifdef statements for compile time,
2819       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2820    
2821    checkpoint47
2822    differentiable version of checkpoint46n_post
2823    o bug fix in quasihydrostaticterms
2824    o * "clean" adjoint code (in terms of extensive recomputations)
2825        can now be obtained for all GMREDI options (i.e. for
2826        - GM_VISBECK_VARIABLE_K
2827        - GM_NON_UNITY_DIAGONAL
2828        - GM_EXTRA_DIAGONAL
2829        - GM_BOLUS_ADVEC )
2830      * However, wrong gradient check problem remains unsolved.
2831      * New CPP options have been introduced for different
2832        tapering schemes
2833    o external_fields_load now part of differentiation list
2834    o pressure needs multiple storing;
2835      would be nice to have store_pressure at beginning or
2836      end of forward_step, e.g. by having phiHyd global (5-dim.)
2837      (NB: pressure is needed for certain cases in find_rho,
2838      which is also invoked through convective_adjustment).
2839    o recomputations in find_rho for cases
2840     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2841    o #define ATMOSPHERIC_LOADING should be differentiable
2842    o ini_forcing shifted to begining of initialise_varia
2843    o Incorporating QNVS line search routines into MITgcm
2844      (this is separate code, and therefore not under pkg)
2845      lsopt/, optim/
2846    o Updated verification/carbon/
2847      - #define GM_VISBECK_VARIABLE_K
2848      - GM_taper_scheme    = 'ldd97'    
2849    
2850    checkpoint46n_post
2851    Merging from release1_p8:
2852    o verification/natl_box:
2853      updating new external_fields_load routine
2854    o New package: pkg/seaice
2855      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2856      The sea-ice code is based on Hibler (1979-1980).
2857      Two sea-ice dynamic solvers, ADI and LSR, are included.
2858      In addition to computing prognostic sea-ice variables and diagnosing
2859      the forcing/external data fields that drive the ocean model,
2860      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2861      The implied surface heat flux is then stored in variable
2862      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2863      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2864      non-local transport term.  Because this call precedes model
2865      thermodynamics, temperature under sea-ice may not be "exactly" at
2866      the freezing point by the time theta is dumped or time-averaged.
2867      N.B.: fairly large differences in accuracy occur across
2868            different platforms/compilers; comparison between
2869            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2870            generated output gives:
2871       T           S           U           V
2872      C D M    c        m  s        m  s        m  s        m  s
2873      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2874      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2875      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2876    
2877      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2878    o GAD:
2879      - generated new common blocks to account for call of
2880        same gad routines with differing traceridentities
2881        (needed to modify tracerIdentity indices in GAD.h)
2882      - generated separate common blocks for case useCubedSphereExchange
2883        (Department of Futurology)
2884      - parameter lists to gmredi_?transport: added tracerIdentity
2885      - added new key indices to tamc.h
2886    o external_fields_load:
2887      - added this routine to TAF list
2888      - needed to make some common blocks global and additional storing
2889        along the same lines as exf package (checkpoint_lev?_directives.h)
2890    o exf:
2891      updated external forcing package
2892      - bug fixes carried over from ecco-branch
2893        (missing OBCS_OPTIONS.h in two routines)
2894      - enable easy to use "no forcing".
2895      - added exf I/O for atmospheric loading
2896      - added exf I/O for runoff data
2897      - transfered scaling between exf <-> MITgcm to exf namelist
2898    o Adding new verification experiment global_with_exf.
2899      This verification experiment is almost identical to the
2900      global_ocean.90x40x15 experiment, except that it uses
2901      the exf (and cal) package instead of the
2902      external_fields_load routine (cf README file).
2903    
2904    checkpoint46m_post
2905    o modified testscript to return -- when there are no lines of "%MON" output
2906    o added new flag "quasiHydrostatic" for QH mode
2907      and new routine quasihydrostaticterms()
2908    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2909      New routine: mom_u_coriolis_nh()
2910    o fixed sign of non-hydrostatic metric terms in u and v equations.
2911      Depend on correct sign of gravitySign.
2912    o added work.pc* to .cvsignore in aim directories using ifc
2913    o introduced flag for controllin non-hydrostatic metric terms
2914    o removed gravitySign from PARM04
2915    o switched to g77/ifc from pgf77 in aim experiments
2916    
2917    checkpoint46l_post
2918    o made convective adjustment work with pressure coordinates:
2919     - changed the direction of k-loop in convective_adjustment.F for the
2920       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2921     - adjusted the reference pressure k-index in convective_adjustment.F
2922     - adjusted the convection condition in convect.F (in analogy to
2923       calc_ivdc.F)
2924     - convective_adjustment no longer computes anything on the halos
2925     - removed the warnings about negative salinity from find_rho.F and
2926       find_alpha.F; instead the new routine look_for_neg_salinity, called
2927       at the beginning of find_rho, find_alpha, and find_beta, does a
2928       check of the entire slice, if CPP-option
2929       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2930    checkpoint46l_pre
2931    
2932    checkpoint46k_post
2933    o fixed the verification/global_ocean.90x40x15 experiment:
2934     - new bathymetry (the world according to A., JMC, and M.)
2935     - new initial fields and forcing fields (*.bin files)
2936     - new POLY3.COEFFS (for the next release one should switch to a full
2937       equation of state: JMD95P or MDJWF)
2938     - fixed several errors and redundancies in the data file
2939     - experiment uses looped cells
2940     - added matlab directory with diagnostic scripts for plotting of output
2941    
2942    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2943     - read AIM physics parameters from a file (data.aimphys)
2944     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2945    
2946    checkpoint46j_post
2947    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2948    o move wVel computation at the end of the time step, in S/R integr_continuity
2949    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2950    o update timeave pkg for wVel diagnostic.
2951    checkpoint46j_pre
2952    
2953    checkpoint46i_post
2954    o Clean up AIM package (and keep the results unchanged):
2955      include CPP_OPTION and use IMPLICT NONE in all routines ;
2956      declare all the variables _RL ; use _d 0 for all numerical constants.
2957      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2958    
2959    checkpoint46h_post
2960    o cleaned up the use of rhoNil and rhoConst.
2961      - rhoNil should only appear in the LINEAR equation of state, everywhere
2962        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2963        and the dynamical equations are all divided by rhoConst
2964    o introduced new parameter rhoConstFresh, a reference density of fresh
2965      water, to remove the fresh water flux's dependence on rhoNil. The default
2966      value is 999.8 kg/m^3
2967    o cleanup up external_forcing.F and external_forcing_surf.F
2968      - can now be used by both OCEANIC and OCEANICP
2969    checkpoint46h_pre
2970    
2971     Added code to convert surface volume flux (fresh water) into
2972     a mass flux when using P coordinates in the ocean (OCEANICP).
2973     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2974    
2975    checkpoint46g_post
2976    o Include a new diagnostic variable phiHydLow for the ocean model
2977      - in z-coordinates, it is the bottom pressure anomaly
2978      - in p-coordinates, it is the sea surface elevation
2979      - in both cases, these variable have global drift, reflecting the mass
2980        drift in z-coordinates and the volume drift in p-coordinates
2981      - included time averaging for phiHydLow, be aware of the drift!
2982    o depth-dependent computation of Bo_surf for pressure coordinates
2983      in the ocean (buoyancyRelation='OCEANICP')
2984      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2985        Theta, Salinity, and Pressure in the parameter list. This routine is
2986        presently contained in find_rho.F. This routine does not give the
2987        correct density for 'POLY3', which would be a z-dependent reference
2988        density.
2989    o cleaned up find_rho
2990      - removed obsolete 'eqn' from the parameter list.
2991    o added two new verification experiments: gop and goz
2992      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2993    checkpoint46g_pre
2994    
2995    checkpoint46f_post
2996    o Enable tangent linear (forward mode) gradient checks:
2997      - extended active file handling to g_... files
2998      - added TANGENT_SIMULATION to theSimulationMode
2999      - extended grdchk package accordingly
3000    o added tangent linear setup in verification/carbon/code_ftl
3001    o added adjoint setup in verification/front_relax/code_ad
3002    
3003    checkpoint46e_post
3004    o Added new equation of state -> MDJWF
3005      - EOS of McDougall et al., 2002, JAOT, submitted
3006      - caveat: the equation of state is only valid for a smaller (more
3007        realistic?) range of values than JMD95P/Z and UNESCO
3008      - added masks to the calculation of pressure in store_pressure
3009      - added more check values for density in check_eos (ini_eos.F), some of
3010        the old check values are out of the range of the MDJWF-eos, so don't
3011        expect perfect matches for those
3012    checkpoint46e_pre
3013    
3014    checkpoint46d_post
3015    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3016      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3017      case of pressure coordinates. eosType='JMD95Z' in
3018      combination with buoyancyRelation='OCEANICP' now causes an error.
3019    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3020      in find_alpha/beta.
3021    checkpoint46d_pre
3022    
3023    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3024      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3025    
3026    checkpoint46c_post
3027    o Changes necessary for ocean in p-coordinates
3028     -  Added new buoyancy relation = 'OCEANICP'
3029     -  Added new parameters = gravitySign (this used to be contained inside
3030        the factor dRdZ which I added when we first switched to R coordinates).
3031     X GM/Redi is not compatible (yet)
3032     X bottom drag and no-slip need to be debugged.
3033    checkpoint46c_pre
3034    
3035    checkpoint46b_post
3036    o Added new equation of state -> JMD95Z and JMD95P
3037      - EOS of Jackett and McDougall, 1995, JAOT
3038      - moved all EOS parameters into EOS.h
3039      - new routines ini_eos.F, store_pressure.F
3040    o Added UNESCO EOS, but not recommended because it requires
3041      in-situ temperature (see JMD95)
3042    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3043      unesco.f to be used with POLY3
3044    checkpoint46b_pre
3045    
3046    checkpoint46a_post
3047    o Added (atmospheric) pressure loading
3048      - new field in FFIELDS.h, etc...
3049      - new cpp flag ATMOSPHERIC_LOADING
3050    o Changed hFacC to _hFacC in calc_phi_hyd.F
3051    o Added SHORTWAVE_HEATING to some files for consistency
3052    checkpoint46a_pre
3053    
3054    checkpoint46
3055    further merges from release1_p5
3056    o new ctrl package
3057      - adopted from ECCO environment to enable optimization
3058      - added Eliassen Palm fluxes to controls
3059    o added Eliassen Palm flux controls to gradient check package
3060    o cost package
3061      - Compatible with new ctrl package
3062      - added Eliassen Palm cost hooks
3063      - modif's of existing cost functions
3064    o Adjoint-related bug fixes in kpp:
3065      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3066      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3067    o autodiff package
3068      - flow directives:
3069        + new for S/R do_the_model_io
3070        + enhanced for S/R checkpoint
3071        + new gmredi.flow
3072      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3073        disable adcommon.h/g_common.h by default.
3074      - fixed problem for adjoint of global_max
3075    o modified verification/carbon/
3076    o New setup for adjoint of global_ocean
3077    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3078    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3079    o incorporated hooks for sponge layer code (external_forcing.F)
3080    
3081    checkpoint45d_post
3082    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3083    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3084      (affects plume_on_slope "cg2d" output)
3085    o add new parameter deltaTfreesurf for free-surface time stepping
3086    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3087  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3088  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3089  o add new flags:  o add new flags:

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