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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.878 by jmc, Tue Sep 18 21:29:09 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/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
8      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
9    o pkg/seaice: a first HSALT time stepping equation has been checked in
10    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
11      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
12      without requiring DO-IF statements
13    o pkg/thsice:
14      use continuous power-law function for partition of energy between lateral
15      melting/freezing and thinning/thickening ; old code using step function
16      still available with #undef THSICE_FRACEN_POWERLAW
17      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
18    o testreport: change AD testing : check against results/output_adm.txt
19      using same scripts as for forward test.
20    
21    checkpoint59g
22    o adjoint testing: in preparation for changing testreport:
23      - output format: cost and grad written on separated lines
24      - ad output results in directory "results" (instead of "results_ad")
25    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
26    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
27    o pkg/ecco: allow user defined cost function contributions
28    o testreport:
29      Allow to choose (per experiment) the list of tested output variables
30       and the main variable (used to issue a pass/FAIL ) ;
31      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
32      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
33      Also modify printing of summary:
34       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
35       b) echo the list of tested variables in the individual summary.txt of
36          each experiment.
37    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
38      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
39      (but still depend on the tile decompostion of the domain).
40    o pkg/seaice: change a discretization detail to make the B-grid code
41      "more symmetric". This change is likely to remove all "ridges/leads" that
42      where quasi-aligned with the grid in B-grid solutions. It may also be
43      the solution to the stress coupling issues with the B-grid.
44    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
45      remove .cvsignore from input dir. (since testreport no longer run here).
46    o pkg/thsice:
47     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
48     - fix reshaping of sea-ice just after advection:
49       melt all the ice only if ice-volume is too small.
50     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
51       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
52     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
53    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
54      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
55    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
56      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
57      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
58      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
59      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
60      -> update output.txt
61    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
62     this affects truncation error: -> update output.txt of exp:
63      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
64      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
65    
66    checkpoint59f
67    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
68    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
69      a bounded range (in forward mode)
70    o pkg/ecco, ctrl, autodiff and mom_common:
71     internal parameter controls, completements of implementations
72    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
73    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
74      (not seem any difference in testing results).
75    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
76       at face corners.
77    o pkg/generic_advdiff:
78     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
79      loop range indices for computing vertical advection tendency
80      and do the calculation in the interior only (no overlap) ;
81      for now, only implemented for SOM advection (to save CPU time).
82     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
83    o exch2 adjoint
84      First set of changes:
85      - add exch2 hand-written adjoint templates
86      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
87        This will require cleanup in pkg/autodiff/*.F
88        (changed routines currently kept separate in verif. code/)
89      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
90        that used to hide exch2 or cubed-sphere specific code
91        (commented via 'cph-exch2')
92    o pkg/seaice
93      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
94    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
95       output of global_ocean.cs32x15.thsice .
96    
97    checkpoint59e
98    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
99      for B-grid vector (not yet tested) and C-grid vector (<- only used
100      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
101    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
102      (#ifdef ALLOW_SALT_PLUME)
103    o gather_2d/scatter_2d: removed halo regions
104    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
105      scheme and the corresponding test case (under front_relax dir). For now,
106      only available with Skew-flux form and not yet tested in realistic set-up.
107      adjoint: store directives updated, but gradient checks deteriorated,
108      so maybe GM/Redi adjoint is now broken.
109    o seaice adjoint
110      * add AREA, HEFF, HSNOW as control variable
111        (should not change lab_sea results)
112      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
113    o pkg/seaice:
114      * added computation of saltFlux in seaice_growth;
115        For time being, sea ice salinity is assumed constant
116        contribution of snow flooding to freshening of sea ice is neglected.
117        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
118        defaults to 0.0 in order to maintain backward compatibility.
119        Typical values for SEAICE_salinity are 4 to 10 g/kg.
120      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
121      * added SEAICE_availHeatFrac, which specifies fraction of surface level
122        heat content used to melt or grow ice
123      * commented out cap of HICE: it helps keep ice thinner
124      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
125      * applied OBCS T/S mask to HEFFM sea ice mask
126    
127    checkpoint59d
128    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
129     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
130     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
131    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
132     and change default value of parameter "GM_Small_Number";
133     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
134       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
135       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
136    o pkg/ecco: cost function when applying pkg/smooth to controls
137    o pkg/ctrl: add forcingPrecond run time parameter
138    o pkg/seaice:
139     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
140     - fix bug in metric terms of u-equation in LSR solver (implicit part),
141       changes verification/lab_sea
142     - rearrange implicit part of u-equation in LSR solver to make it easier to
143       read, understand, and debug. This causes changes at the truncation level.
144     - fix (serious) bug in the boundary conditions (sign error in the implicit
145       part) of the LSR solver. Changes all LSR results.
146     - fixed problem with HSNOW initialization to avoid thick snow when AREA
147       is initilized with small values - does not change lab_sea results.
148     - added HsnowFile initialization capability
149    o pkg/smooth: addition to model/src and pkg/ctrl so allow
150     initialization of pkg/smooth and application to control vector
151    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
152    o dependencies: pkg/profiles requires pkg/cal
153    o pkg/profiles:
154     - added option ALLOW_PROFILES_GENERICGRID
155         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
156         that interpolation information (grid points and coefficients) is provided
157         within the netcdf input files.
158         -> sample matlab scripts can be found in MITgcm_contrib/gael
159         that allow you to prepare netcdf input files.
160     - also modified: cleaner include statements, cleaner error print statements,
161       cleaner stops when error, and more tests of the netcdf input files consistency.
162    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
163    o pkg/seaice:
164     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
165       requires a new routine: seaice_diagnostics_fill.F
166     - make sure that seaice does not move if not forced (pressure replacement
167       method, Hibler and Ip, 1995), changes results
168     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
169     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
170       It is turned off by default (=-1.), because it changes the results.
171     - make it possible to read AREA from a file, too.
172    
173    checkpoint59c
174    o add S/R and diagnostics for oceanic mixed-layer depth
175    o move GMRedi call after all vertical mixing schemes (including KPP)
176    o pkg/thsice:
177     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
178      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
179    o pkg/obcs:
180     - bug fix for balance code
181    o pkg/seaice:
182      - allow values of SEAICE_elasticParm > 1
183      - add new parameter SEAICE_evpTauRelax as an alternative
184        to SEAICE_elasticParm
185      - make lsr boundary conditions free slip (by default), changes result
186      - add code for no slip boundary conditions for lsr
187      - set minimum of zeta to zero (and not 4e8) (changes results)
188      - add a cap on AREA after advecting AREA if seaice_growth is not called
189    o change calculation of Visbeck K:
190      - no longer depend on tapering scheme; instead, compute slope (limited
191        by GM_maxSlope). this is equivalent to what was comuted before with
192        clipping or linear tappering.
193      - fix vertical averaging (wrong by 1/2 level)
194      - leave the old version (but will not be maintained) within
195        #ifdef OLD_VISBECK_CALC / #endif
196      - update output of exp. ideal_2D_oce
197    o change error catch in calc_r_star to improve vectorization
198    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
199      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
200    o adjoint:
201      Re-organized adjoint checkpointing according to Matt Mazloff
202      (but with modifs/completions/cleanups)
203      Storing is now bundled into large arrays to optimized I/O
204      (and second step in cleanup of the_main_loop)
205    
206    checkpoint59b
207    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
208      - export/import (between ocean & coupler) fields needed for ocean DIC.
209    o pkg/seaice:
210      - get rid of three more exchanges seaice_calc_viscosities (required
211        different loop boundaries in seaice_lsr and seaice_ocean_stress)
212      - bug fix in seaice_ocean_stress (update of lab_sea required)
213      - reduce loop boundaries to necessary minimum also in seaice_evp
214      - go back to the old way of computing deltaC/Z as the adjoint likes that
215        better
216    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
217      passive tracer to an Age Tracer) + update output.txt
218    o pkg/exf:
219      - implement A-grid / C-grid selection for wind-stress input files.
220      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
221      for now, in exf_bulk_largeyeager04.F only :
222      - change implementation for case where windspeed + 2. components wind-stress
223        are read-in. AND use rhoConstFresh to convert evap.
224    o pkg/seaice:
225      - use correct EXCH_UV for wind-forcing (on A-grid).
226      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
227        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
228    o pkg/exf:
229      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
230      EXF_INTERPOLATION:
231      - merge global_with_exf/code version of exf_interp_read.F
232        to the main code ;
233      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
234        reading the file ; Important: This options needs to be defined to recover
235        previous code.
236        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
237      - no longer loose real*8 precision along the way when using exf_iprec=64.
238    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
239      - change discretisation of evp-solver in order to avoid another exchange
240        (changes lab_sea) and clean up a little
241      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
242        help the adjoint (this also changes the results slightly)
243      - add a few "_d 0" where they had been missing in seaice_evp.F
244      - cleaning up: remove unused seaice_calc_rhs.F
245    o pkg/exf: some cleaning-up:
246      - change various "constants" into runtime parameters
247      - cleaned-up Large&Yeager04 routine which should eventually
248        replace exf_bulkformulae.F (changed names of S/R and CPP)
249        and merged various ALLOW_ATM_WIND options
250     only used with thsice pkg (in thsice_get_exf.F):
251      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
252        which are used when useStabilityFct_overIce=TRUE (= the default)
253      - change default values of ice & snow emissivity and scale downward LW
254        by ice & snow emissivity.
255    o pkg/thsice:
256     fix few little problems, in thsice_calc_thickn.F:
257      - growth vertically (and not laterally) if iceFrac == iceMaskMax
258      - melt only laterally if hIce < hThinIce (as the comments say)
259      and in thsice_extend.F:
260      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
261      - start to form ice as soon as the minimum ice-volume is reachable.
262     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
263      and cpl_aim+ocn
264    o pkg/kpp
265     - move computation of surface related input fields to KPP into a new
266       subroutine kpp_forcing_surf.F
267     - remove wrong (within bi,bj loops) EXCH calls.
268     - little cleaning (add argument myThid in last position, cvs header ...)
269     - for now, fix conservation problem by exchanging KPPviscAz (may not
270       be the best fix)
271    o pkg/seaice
272     - check for inconsistent evp parameter/cpp-flag combination
273     - remove leftover errIO flat for obsolete name list error handling
274    o OpenAD
275     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
276    
277    checkpoint59a
278    o pkg/seaice: some parameter clarifications and a little bit of clean up
279    o pkg/thsice: rename run-time parameters:
280       himin       -> hIceMin
281       himin0      -> hThinIce
282       hihig       -> hThickIce
283       i0          -> i0swFrac
284       transCoef   -> bMeltCoef
285       frac_energy -> fracMelting
286      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
287       with default values (for now) that do not change the results.
288      remove old version of thsice vars advection in pkg/seaice.
289    o in FFIELDS.h:
290      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
291      - make pLoad & sIceLoad always available (but still only used if
292         ATMOSPHERIC_LOADING is #define).
293    o pkg/kpp: replaced _KPP_RL with _RL
294    o bug fixes for vertical diffusivity computations when both KPP and
295        3D diffusivity arrays are used.
296    o pkg/seaice: fix bug in evp solver, while doing that
297      - change (improve?) discretization of stress computations for both
298        cgrid-lsr and evp solver
299      - add a new routine to compute strain rates
300      - the above changes lab_sea results
301      - add no slip conditions for evp solver (off by default), lsr-version
302        may follow
303      - fix exchange for shear at Z-points (does not change lab_sea)
304      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
305        (to force the user to pick a time step since there is not "safe" way
306        of choosing it)
307      - add principal stress diagnostics
308      - rearrange fields for evp a little to avoid having to call a: too many
309        exchanges and b: exchanges for stress trensor components which we do
310        not have.
311      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
312        of evp, complete rewrite for lsr case (latter is does not yet work
313        in all cases)
314    o pkg/kpp: add code to have mixing in shelf ice caverns
315      - add myThid to all kpp routines (long overdue)
316    
317    checkpoint59
318    o pkg/exf:
319      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
320        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
321      - move exf header files from lower_case.h to UPPER_CASE.h ;
322        add missing cvs Header & Name
323      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
324      - add namelist param. selectStressGridPosition, exf_monFreq
325      - retire many _CLIM routines, and remove data.exf_clim
326        + params moved to data.exf
327        + climsst, climsss now handled by exf_set_gen, i.e.
328          climss?period=0 refers to constant field,
329          climss?period=-12 to monthly forcing
330      - split up namelists in data.exf
331    o pkg/seaice:
332      - remove seaice_exch and seaice_exch_uv
333      - remove superfluous exchange of theta
334      - add myThid to seaice_budget_ocean/ice
335      - add new interface for atmospheric wind forcing (C-grid only)
336        + new routine
337        + two new field (taux, tauy for stress over ice)
338        + removed one global field (DAIRN) for C-grid case only
339    o pkg/thsise
340      - 2nd set of modifs for thsice adjoint in conjunction with exf
341    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
342    
343    checkpoint58y_post
344    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
345      vertical diffusivity, similar to that in MOM4; turned on using
346      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
347      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
348    o Added capability for 3D specification of background vertical diffusion
349      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
350      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
351      "data" file that contains the 3D vertical diffusivity coefficients.
352    o ice dynamics (pkg/seaice) with thsice thermodynamics:
353      - add code within pkg thsice to advect & diffuse sea-ice fields
354      similar to (and will replace) what has been added in  seaice_advdiff.F,
355      but: - conserving Mass, Heat & Salt.
356           - better when using non-linear advection scheme (not yet fully tested)
357           - can also be used in atmospheric set-up (for now, only the diffusion).
358    
359    checkpoint58x_post
360    o IO option for global-file compact format:
361      - add options when generating topology (utils/exch2/matlab-topology-generator)
362      - add I/O capability (pkg/mdsio).
363      - adapt utils/matlab/rdmds.m to read this format.
364      for now long-line format not yet supported by pkg/mdsio (& exch2).
365    o shelfice: add a few diagnostics
366    
367    checkpoint58w_post
368    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
369      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
370      (and replace horiVertRatio in NH code).
371      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
372                         and tutorial_plume_on_slope (sensitive to truncation)
373    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
374      directly to drive seaice model (C-grid only)
375    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
376     - reintroduce computation of wind from stress,
377     - compute tau (in exf_bulkformulae.F) from windstress averaged to
378       mass points to avoid tau = 0
379     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
380    o rdmnc.m: make it work with "global" files created with gluemnc
381    o rdmnc.m : some improvements in dealing with singleton dimension
382      (tested on all testreport mnc output files).
383    o genmake2: disable pkg/profiles if netcdf test fails.
384    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
385    o move call to cal_readparms up to make calendar parameters/variable available
386      to all packages
387    
388    checkpoint58v_post
389    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
390      useDynP_inEos_Zc tested.
391    o pkg/exf: changes to properly interpolate/mask/scale initial fields
392    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
393      and portions thereof.  See read_cs.txt for description and examples.
394    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
395      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
396      following the great-circle arc between those 2 points.
397    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
398      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
399    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
400     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
401     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
402     - still needs work (not working with some options ; efficiency to improve)
403       and serious testing.
404     - use this scheme for temperature & salinity in 2 advection test exp.:
405       advect_xy & advect_xz, respectively.
406    
407    checkpoint58u_post
408    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
409    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
410    o testreport: add option "-skipdir" to skip some test.
411    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
412      momentum calculation.
413    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
414    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
415      remove checkpoint.F and the_correction_step.F (no longer used);
416      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
417    o add option (linFSConserveTr) to correct for tracer source/sink due to
418      Linear Free surface
419    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
420    o pkg/thsice: fix reading mnc-pickups
421    
422    checkpoint58t_post
423    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
424    o pkg/mdsio:
425     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
426       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
427       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
428     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
429     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
430       either MDS_READ_FIELD or MDS_WRITE_FIELD )
431     - new S/R (to replace MDSWRITEMETA), which allows to write more
432       informations (variable names, time ...) to meta files.
433     - modify rdmds.m to give back the meta file content.
434    o pkg/diagnostics: change vertical interpolation to be safer, and more
435       flexible (define p-levels to interpolate to in data.diagnostics);
436      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
437       diagnostic pointer.
438    o pkg/seaice: more cleaning up of seaice_growth, added many comments
439    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
440    o fix multi-category seaice:
441     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
442       SEAICE_MULTICATEGORY
443     - fix short wave heat flux
444    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
445       and allow to use EVP solver. Change forward lab_sea: test both EVP
446       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
447    o Initial check-in of lab_sea adjoint
448      (very similar to natl_box_adjoint/code_seaice)
449      * used C-grid and EVP solver
450      * used KPP, GM/Redi
451      * uses inAdExact=.TRUE.
452      * gradient checks fail for both ADM and TLM
453        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
454        f.d. gradients actually seem more problematic than ADM, TLM gradients;
455        issue is related to forward mismatch between g77 an ifort
456    o pkg/seaice: overhaul of thermodynamics
457     - growth.F and groatb.F are replaced by new routine seaice_growth.F
458     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
459     - move a few global fields out of SEAICE.h into seaice_growth.F and
460       make them 2D (FICE/QNETO/ ...)
461     - remove FO (it is the same as QNETO)
462     - introduce a few local fields to avoid modifying external fields such
463       as atemp, etc.
464    
465    checkpoint58s_post
466    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
467      changed exf_set_gen.F so that
468        genperiod=0 means input file is one time-constant field and
469        genperiod=-12 means input file contains 12 monthly means
470    o CG2D: use pre-computed solver main-diagonal (stored in common block);
471      this affects truncation error ; generate new output file for exp. which
472      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
473        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
474        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
475        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
476        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
477        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
478    o start implementation of deep-atmosphere and anelastic formulation
479    o verification: remove 2nd copy of input files and use script "prepare_run"
480      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
481    o mom_common/vecinv/fluxform: fix a few initialisation isssues
482    o profiles: fix for multithreaded case
483    
484    o diagnostics: rename few diags:
485      s/'PRESSURE'/'RCENTER '/g
486      s/'TICE    '/'oceFreez'/g
487      s/'TAUX    '/'oceTAUX '/g
488      s/'TAUY    '/'oceTAUY '/g
489      s/'SWFLUX  '/'oceQsw  '/g
490      s/DIFx/DFxE/g
491      s/DIFy/DFyE/g
492      and add few ocean-forcing diagnostics:
493      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
494    o modifications to pkg/seaice/growth.F and budget.F, which change results of
495      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
496      as actual snow thickness.  It now refers everywhere to effective snow
497      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
498    
499    checkpoint58r_post
500    o modifications to pkg/seaice/growth.F, which change results of
501      lab_sea experiment: fixes pertain to melting snow over open water, to
502      masking EVAP under sea ice, and to using the correct AREA variable for
503      computations of EVAP, PRECIP, HSNOW, and GHEFF
504    o add ability to read bathy, salt, and theta using MNC (off by def)
505    o add flooding algorithm and advection of HSNOW for pkg/seaice;
506      both are turned off by default and do no change any results
507    o seaice advection with pkg/thsice: a step toward the use of non-linear
508      advection scheme, but #ifdef or commented out for now (requires more EXCH).
509    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
510      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
511      in natl_box (affects results @ truncation level: update output.txt)
512    o multi-threading and IO:
513      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
514      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
515        (needed to work with SingleCpuIO): tested in all verif. exp.
516    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
517      affects the results (but none of the verification test uses this scheme).
518    o Adding some pkg/diagnostics capability to pkg/seaice
519      (will certainly be subject to changes)
520    o ctrl: adding new control variables:
521      lwflux, lwdown, evap, snowprecip, apressure, runoff
522    
523    checkpoint58q_post
524    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
525      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
526      high_res_cube configuration by 4% on Columbia.
527    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
528      add (in global_with_exf/code) a version of EXF_INTERP_READ without
529      dynamical allocation (seems to work in multi-threaded).
530    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
531      single CPU io) so that TAF does not have to see EESUPPORT.h
532    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
533    
534    checkpoint58p_post
535    o obcs: stop if obcs is used with useCDscheme = .true.
536    o shelfice:
537     - fix a sign error so that no slip at shelfice interface works
538     - remove stop for combination non-hydrostatic code and shelfice. That does
539       not mean, that the results are correct, but at least they are numerically
540       stable
541    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
542    o added adjoint exch routined for all exch*3d* routines
543      and updated flow directives
544    
545    checkpoint58o_post
546    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
547      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
548    o change controling S/R for writing pickup file (new S/R do_write_pickup)
549      and clean-up reading/writing of pickup files.
550    o fix local version of read/write pickup (NH part) in rotating_tank/code
551    o simplify EXCH interface:
552     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
553     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
554    o added the regrid package
555    o shelfice:
556     - add a simple boundary layer scheme to reduce noise
557     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
558    
559    checkpoint58n_post
560    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
561       local variable (not in common block).
562    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
563      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
564      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
565        to work with SingleCpuIO.
566    o add "_d 0" to real constant of pkg/cfc subroutines ;
567       update exp. cfc_exemple & tutorial_cfc_offline output files.
568    o multi-threading and IO:
569      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
570        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
571      - barrier before and after reading.
572      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
573      - avoid using MDS_WRITELOCAL for LAND pkg output.
574      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
575        common-block variables ; Allows multi-threading with master-thread IO.
576    o change default MAX_NO_THREADS from 32 to 4 ;
577      and stop cleanly when MAX_NO_THREADS is too small.
578    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
579    
580    checkpoint58m_post
581    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
582       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
583    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
584       keep global_ocean.90x40x15 (for AD testing) with former secondary test
585       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
586    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
587        add MITgcm_tutorials (= code + all the tutorials)
588    o ecco, option to compute cost for total ssh (mean+anom)
589    o consistent with addition of ptracer and ssh in pkg/profiles
590    o profiles: adding ptracer and ssh
591    o testreport: change multi-test output-file name
592      (from output.txt.{name} to output.{name}.txt)
593    o profiles: now ok for mutli-tiles case
594    o seaice: add 4 parameters for different advection schemes for area,
595      (effective) seaice thickness, enthalphy, and snow height. Their default
596      is the standard parameter SEAICEadvScheme
597    o calc_gw:
598     - add cosFacU in zonal viscous flux (harmonic.visc.).
599     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
600       of tutorial_plume_on_slope.
601    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
602    o calc_gw: true flux-form, account for horizontal grid spacing.
603      update rotating_tank results, but not plume_on_slope (affected at
604      truncation level, 11 digits).
605    
606    checkpoint58l_post
607    o calc_gw:
608     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
609     - remove side-drag for now (need to fix it); update plume_on_slope results.
610     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
611    o commit code to make SST/SSS weights spatially variable
612      (based on either variable in-situ or variable initial T/S weights)
613    o pkg/ecco:
614      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
615        now based on horizontally varying weights wthetaLev, wsaltLev
616      * cost_averagesflags now returns year indices in addition to day, month
617      * sflux balance is performed on annual basis
618        (sflxumm, sfluxmm2, bal_sfluxmm)
619      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
620        including separate counting and multipliers
621    o pkg/rbcs
622      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
623    
624    checkpoint58k_post
625    o testreport:
626     - always build in dir. "build" (if not there, mkdir build instead of building
627       & running in input)
628     - run in dir run (if it exists), in build otherwise.
629     - call prepare_run (if input/prepare_run exists)
630     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
631    o pkg/exf modifications to interpolation and rotation routines for more
632       reasonable treatment of North Pole singularity: for tracers North Pole
633       value is set to northernmost zonal-mean value, for zonal velocity it is
634       set to zero, and for meridional velocity it is set to northernmost value.
635    o pkg/exf/exf_check_range.F
636     - add tile index to diagnostics and move stop statement to the very
637       end of the routine.
638    o pkg/diagnostics: (diagnostics_main_init.F)
639      define title of isomorphic variables according to the current config.
640    o pkg/thsice with pkg/seaice dynamics:
641    - fix domain of computation (interior only, required for exf) and do exchanges
642    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
643    o towards a standard way of dealing with multi-threading in MONITOR
644      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
645    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
646       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
647    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
648    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
649    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
650       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
651    o tracer advection:
652     - clean-up and simplify calc_common_factors.F
653     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
654       advection subroutine (but still not used within DST advection S/R)
655    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
656    
657    checkpoint58j_post
658    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
659      from file (collects calls previously in FORWARD_STEP)
660    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
661    o adjoint store dir. adjusted accordingly
662    o genmake2
663      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
664    
665    checkpoint58i_post
666    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
667      on wind stress (SEAICEstressFactor defaults to 1.)
668    o Total number of Timers is finite (<=40): comment out 2 non-essential one
669      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
670    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
671      on CS-grid: no longer loosing mass.
672    o exf & curvilinear-grid: no longer modify longitude xC & xG.
673    o pkg/ggl90: fix sloppy output and fix a bug
674    o pkg/seaice: added SEAICEuseEVPpickup parameter
675      - Set to false in order to start EVP solver with
676        non-EVP pickup files when using SEAICEuseEVP
677      - fix sign error in diffusion in seaice_calc_rhs
678    
679    checkpoint58h_post
680    * Modifications for bottom topography control
681      o replace hFacC by _hFacC at various places
682      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
683      o add non-self-adjoint cg2d_nsa
684      o update autodiff support routines
685      o re-initialise hfac after ctrl_depth_ini
686      o works for 5x5 box, doesnt work for global_ocean.90x40x15
687    * Adding verification for 5x5 box (4-layer) bottom topography control
688    
689    checkpoint58g_post
690    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
691       used for mean seasonal cycle, mean diurnal cycle); add an example
692       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
693    o pkg/ggl90:
694      - add parameter (minimum surface kinetic energy)
695      - fix bug (avoiding division by zero)
696    o couple pkg/thsice to pkg/seaice:
697      - modify advection in seaice to accomodate new scalar fields to be advected
698      - only muliDimAdection scheme work with seaice/thsice
699      - mapping of thsice-variables to seaice-variables, back and forth
700      - does not break the verification experiments, but does not give the
701        desired results either
702    o pkg/seaice
703      - make (default) second order advection a bit less confusing?
704    
705    checkpoint58f_post
706    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
707      to pkg/seaice):
708      - new routines thsice_map_exf and thsice_get_exf provide the interface
709      - add an additional formal parameter to thsice_solve4temp
710    o pkg/exf:
711      - add new fields wspeed, snowprecip (to be able to couple to thsice)
712      - correct Stefan-Boltzmann constant
713      - new parameter for longwave surface emittance
714      - separate some stuff from exf_bulkformulae into new routines  
715        exf_radiation, exf_wind
716      - add new parameters and constants: longwave emissivity for ocean, ice
717        and snow, evaporation parameters over ice
718      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
719        either wind from stress or stress from wind
720    o pkg/thSIce:
721    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
722    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
723       and THSICE_CALC_THICKN
724    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
725    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
726      to make debugging easier.
727    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
728    o pkg/bulk_force:
729      - clean-up comments and parameters ;
730      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
731    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
732      generate new output for test-experiment: aim.5l_cs.thSI
733    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
734      testreport accordingly
735    
736    checkpoint58e_post
737    o SEAICE_CGRID adjoint done
738    o R_STAR adjoint implemented.
739      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
740      * need to sort out init. of h0facc, etc.
741    o Make pkg/profile fully independent of ecco,cost, etc. stuff
742      to be able to use it in pure forward.
743    
744    checkpoint58d_post
745    o upgrade simple test-experiment to tutorial example:
746     step.1: duplicate the experiment and (step.2) will remove the old copy.
747      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
748      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
749      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
750      tutorial_global_oce_biogeo    <- copy of dic_example
751      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
752      tutorial_plume_on_slope       <- copy of plume_on_slope
753      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
754      tutorial_global_oce_optim     <- empty for now (David ?)
755      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
756     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
757    o correct a sign problem in cost_scat.F
758    o obcs and ptracers: fix boundary conditions for advections schemes
759      with larger stencil
760    o thsice adjoint: start
761    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
762      completeness
763    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
764      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
765    o ptracers adjoint:
766      * avoid extensive recomputatations
767      * fix missing re-init. of gptr (missed by TAF)
768    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
769      me to turn off the excessive output to STDOUT that this package produces
770    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
771      and add those terms in Vector-Invariant formulation.
772    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
773      if the control period (xx_hfluxperiod etc) is 0
774    o in profiles pkg, clean routines and fix details
775    o in ecco pkg, reading ssh data:
776      fix problem in case the model does not start at iter0=0
777    o fix mnc-pickup/restart for ptracers
778    o new package prifiles:
779      code to compute profile-based cost by Gael Forget
780      (modifs in ecco, ctrl, autodiff)
781    o Benign bug fix in initialization (spotted by M. Mazloff) of
782      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
783    
784    checkpoint58c_post
785    o adjoint: finish NLFS adjoint and provide reference output in
786      verification/global_ocean.90x40x15/results_ad_nlfs
787    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
788      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
789      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
790      with SEAICE_CGRID defined.
791    o move calendarDumps from "data" to "data.cal" and clean-up the code
792      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
793    o add useEXF & useCAL flags (for now, set in hard-coded way)
794    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
795      (were missing in NH mode, and wrong in quasihydrostatic mode).
796      waiting for Chris updated version of calc_gw to add those CALLs.
797    o fix bug in quasihydrostatic S/R ;
798      add a test for this option: global_ocean.90x40x15.qshyd
799    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
800      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
801    o add on/off flag useOffLine for package OFFLINE
802    o seaice:
803      - modify advection so that it works also on the C-grid
804      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
805        problem in multi-tile runs with C-grid
806      - add flags for clipping ice velocities and/or masking solver forcing
807      - fix drag (ocean on ice) formulation and a bug that caused noise in the
808        C-grid solver
809      - added a few comments to seaice_diffusion.F
810      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
811        are now exclusive)
812      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
813        required re-ordering the code a little:
814       + make DAIRN global variable (defined in SEAICE)
815       + move computation of the viscosities eta and zeta into a new separate
816         routine (because I need to recompute them in seaice_ocean_stress.F)
817    
818    checkpoint58b_post
819    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
820      update output.txt of exp. aim.5l_cs.thSI
821    o various mnc cleanups and improvements:
822      + shrink lookup tables by factor of ~4
823      + better error reporting when running out of lookup space
824      + able to handle longer path/file names (up to 500 chars)
825    o adjoint:
826      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
827      - TBD: "hidden" mom_vecinv recomp. in dynamics
828    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
829     (allow to differentiate between forcing components using new integer flags:
830      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
831     and add new flag to put Dissipation tendency out of Adams-Bashforth.
832    o ecco
833      - enable trend removal from SSH anomaly obs.
834    o adjoint
835      - a fix for PmEpR when #undef EXACT_CONSERV
836      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
837      - try to fix "hidden" recomp. in forward_step for NLFS
838        (NLFS seems broken sometimes after I checked it in)
839    o seaice:
840     - add c-grid version of the dynamic solver:
841       + three new routines that are the c-grid substitute lsr, dynsolver
842         and ostres
843       + put a few fields that were local to dynsolver into global common
844         blocks, so that I can move the computation of stresses etc into
845         seaice_lsr (saves coding but may break the adjoint).
846     - replace more hardwired parameters by runtime parameters
847     - add ice masks that mask the rhs of the implicit solvers where there
848       is no ice (commented out in seaice_dynsolver, because i am not sure
849       if this works properly), eventually this should replace the clipping
850       of ice velocities in seaice_dynsolver to +/-40cm/s.
851    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
852      include it only where its needed
853    o move balancing of fluxes before the call of external_forcing_surf
854    o seaice:
855      - correct units of turning angles (now they are really in degrees)
856      - move computation of GWATX/Y out of main routine into dynsolver
857      - initialize GWATX/Y in seaice_init
858    o Apply mask on Fresh-Water flux (needed for SSH forcing).
859      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
860    o seaice: add runtime flags for turning angles (default to zero)
861    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
862      and trend from exf forcing and ctrl control adjustments
863    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
864      (since checkpoint57x_post)
865    o change the default rotation period to 86164.s = the Earth rotation
866    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
867      and based on a reference stratification. Tested within hs94.cs-32x32x5.
868    o seaice advection: add code for choosing between the default (2nd order
869      central differences) and multiDim advection schemes provided by
870      pkg/generic_advdiff
871    o seaice:
872      - removed all references to SEAICE_GRID.h fields from
873        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
874        (cubed-sphere configuration will change a little)
875      - grid computations in seaice_init are obsolete now.
876      - cleaned up code a little so that is easier to read (hopefully).
877      - added new (better?) discretizations of default advection and diffusion
878        (turn on with SEAICEuseFluxForm)
879      - replace 1 in 3d global fields by kSurface in growth.F
880      
881    checkpoint58a_post
882    o seaice:
883      - bug fix in advect.F
884    o shelfice:
885      - separate shelfice load anomaly from pload (breaks with time
886        dependent forcing), => introduce constant field shelficeLoadAnomaly.
887        Its default is 0., but it may be computed more cleverly from (unknown)
888        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
889        done offline. A good approximation of the pressure load anomaly is
890        necessary to avoid large initial adjustment processes underneath
891        deep-reaching shelfice.
892      - small fix in ISOMIP shelfice_thermodynamics
893      - add more sophisticated thermodynamics of Hellmer (1989), this is
894        now the default
895      - give a few constants more intuitive names
896    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
897      if bulk formulae are used in long integration (especially EmPmR). Turn
898      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
899      if balancePrintMean, the imbalance that is substracted is printed to
900      STDOUT.
901    o fix bug (typo) in obcs_apply_eta.F
902    o add a new package shelfice which enables us to model the circulation
903      underneath shelf-ice with draughts of hundreds of meters.
904     - works
905     - to do: + include improved thermodynamics
906              + check whether kSurfC (from model/inc/SURFACE.h) can be used
907                instead of new field kTopC
908              + can we use topoFile, Ro_surf and existing code in ini_depth.F
909                instead of new field R_shelfIce and new code in ini_depth.F
910                and ini_mask_etc.F?
911              + adjust vertical mixing schemes?
912    o seaice pkg:
913     - add a cpp-flag to include a simple formula for a salinity dependent
914       freezing point of sea water at the surface
915     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
916       meridional stresses are now different (and hopefully correct)
917    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
918       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
919       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
920    o pkg/diagnostics: add options and parameters for regional-statistics
921       diagnostics ; define regions by reading a region-mask from a file
922       (might add other options later)
923    o pkg/bulk_force:
924     - add option and parameters to use AIM surface-flux formulae.
925     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
926       others forcing fields (defined in PARM05, parameter file "data") are loaded
927       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
928     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
929     - use the right EXCH call for uwind,vwind (to work on CS-grid).
930     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
931       and parameters (note: calcWindStress replaces .NOT.readwindstress).
932     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
933    
934    checkpoint58
935    o add "--embed-source" option to genmake2 which, when the supporting
936      tools can be compiled (as determined by genmake2) will turn on the
937      embed_files package which then embeds the entire MITgcm source code
938      (*.[fFhc] + Makefile) used for the build within the executable
939      - requested by CNH but off by default
940      - adds a paltry <9MB to the mitgcmuv executable in most cases
941      - only writes the output when useEMBEDSRC in eedata is true
942    o clean up 3-dim. relaxation codes:
943      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
944      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
945      * Thanks to Tom Haine for testing!
946    
947    checkpoint57z_post
948    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
949      affects output (@ truncation level) of exp. plume_on_slope ; updated.
950    o fix the pickup behavior for obcs in combination with ptracers
951    o fix a bug in ptracers_external_fields_load
952    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
953      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
954    o transfered surface NH pressure to eta field (if exactConserv).
955    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
956         and update lab_sea output.txt file.
957    o completing 3-dim. relaxation code: additional term
958         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
959      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
960      * At compile time, in "EXF_OPTIONS.h" set
961          #define  ALLOW_CLIMTEMP_RELAXATION
962          #define  ALLOW_CLIMSALT_RELAXATION
963      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
964          tauThetaClimRelax3Dim = 15552000.0,
965          tauSaltClimRelax3Dim  = 15552000.0,
966      * 3 cases:
967          1) Use a constant-in-time 3-dim. field
968          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
969          3) Real-time relax. to time-evolving prescribed field
970    o Adding Laplacian-type smoothness constraint on
971      initial and boundary (forcing) controls (ic, bc)
972      * enable at compile-time via
973        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
974      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
975      * Absolute scale somewhat unclear so far
976      * no area weighting was included since no other cost term does so far
977    
978    checkpoint57y_post
979    First step for a NLFS adjoint
980    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
981    o new init. routines for calc_r_star, calc_surf_dr
982    o still need to deal with ini_masks_etc
983    o testreport seemed happy
984    checkpoint57y_pre
985    
986    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
987    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
988    o add new offset feature to offline pkg (plus minor cleanup)
989    o cfc fixes for final year of integration
990    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
991      be in GCHEM_OPTIONS).
992    
993    checkpoint57x_post
994    o fix testreport Pb in multiple test experiment.
995    o cleanup our namelist syntax in verification:
996      - make it more F95 standards compliant (some work still needed)
997      - allows the vast majority of our tests to work with gfortran
998    o Non-Hydrostatic:
999     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1000     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1001    o Allow to apply AB on T,S rather than on AB(gT,gS):
1002     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1003     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1004       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1005     - need a "clever" read_pickup to restart from the other AB formulation
1006    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1007    o remove some unused variables (reduces number of compiler warnings)
1008    o adjoint
1009      * Disable useVariableViscosity for adjoint for time being
1010        (there are a number of extensive recomputations)
1011      * Initialize certain variables needed for adjoint
1012    
1013    checkpoint57w_post
1014    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1015                 fix the singleCpuIO RS version of MDSWRITEFIELD
1016       and add a WARNING if using globalFiles=T with multi-processors.
1017    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1018      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1019    o tracer advection scheme:
1020      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1021       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1022       was not very convenient).
1023      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1024       (further tests needed for the implicit DST & Flux-Limiter schemes).
1025    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1026      and sRef for convenience, handy, when you want to initialize
1027      ptracers in a large domain with a constant non-zero value. Also,
1028      untangle ptracers_init.F a little.
1029    
1030    checkpoint57v_post
1031    o change dome exp. to use variable viscosity in side-drag terms.
1032    o remove all the files from the cfc_offline test since they are now
1033      incorporated into tutorial_cfc_offline which has been producing
1034      identical results for a few days of testing
1035    o add new parameter: sideDragFactor to enable half-slip-side BC
1036      and change side-drag S/R to use viscosity from mom_calc_visc
1037      (can switch back by setting sideDragFactor=0.); affects results at
1038      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1039       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1040    o vorticity & strain are now computed without masking, to account for
1041      no-slip-side BC in variable viscosity calculation ; mask is applied
1042      anyway later on, before computing advection/coriolis terms.
1043    o modify exp4 to test new obcs support for reading from external files
1044      and for passive tracers
1045    o fix behavior of ptracers_monitor when monitor output is written to a
1046      netcdf-file; still not independent of monitor.F (writes in the same
1047      file).
1048    o change default value of tRef (put a uniform, meaningful value for ocean
1049      & atmos) and initialize sRef (was missing, as Martin mentioned).
1050    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1051      to be proportional to enstrophy dissipation length.  Thus,
1052       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1053      This is now consistent with Smagorinsky and with the manual.
1054    
1055    checkpoint57u_post
1056    o OBCS and PTRACERS: add open boundary support for passive tracers
1057      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1058        OB-values from file; this is not different from the way theta and salinity
1059        are treated
1060      - however, Orlanski-radiation conditions are not supported, and the model
1061        will stop if you use pTracers and Orlanski at the same time.
1062      - beefed up the rountine obcs_external_fields_load: now only those open
1063        boundary values are overwritten with values from files for which there
1064        are really files, otherwise the OB-fields remain untouched. This makes
1065        it possible to use different OBs at different ends of the domain (as
1066        with EXF)
1067    o reduce number of exch calls in shap_filt (s2).
1068    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1069      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1070    
1071    checkpoint57t_post
1072    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1073    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1074      same truncation, independent of the face number: affects affects several
1075      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1076    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1077      note that biharmonic viscosity + no-slip was not tested in any experiment.
1078    o fix bug in non-linear free-surf side-drag ; generate new output for
1079      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1080    o make mnc honor the writeBinaryPrec flag for most kinds of output
1081    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1082    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1083      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1084    o add brackets in multi-terms sum to get same truncation, independent of
1085      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1086      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1087    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1088      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1089      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1090      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1091      Suggested values of viscosity parameters found in mom_calc_visc.
1092      Many new viscosity diagnostics available.
1093    
1094    checkpoint57s_post
1095    o Add clearing-house for viscosity calculations, mom_calc_visc and
1096      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1097      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1098      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1099      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1100      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1101      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1102      ViscAhStrain and viscAhTension are now retired.
1103    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1104    o In response to JMC's bug report, genmake2 now ignores any soft-links
1105      that it finds in the *current* directory when searching for files.
1106      Soft-links found in any other source directories will still work as
1107      they did before.
1108    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1109      a C routine to unlimit the stack size
1110    o mnc-ify pkg/aim snapshot vars
1111    o mnc-ify pkg/land as requested by Daniel
1112    o various changes to mnc including:
1113      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1114      - output can now be grouped so that all files within a group
1115          change the ITER portion of their names in lock-step together
1116      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1117          and works with both EXCH1 and EXCH2 (but needs more testing)
1118      - writing works for all verification test cases w/ g77 on Linux
1119    
1120    checkpoint57r_post
1121    o make MNC variable initialization happen earlier
1122    o add diagnostics for (almost) each term of the momentum Eq.
1123    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1124    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1125    o remove MINIMAL_TAVE_OUTPUT option ;
1126      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1127    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1128      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1129    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1130    o add time-dependent SST, SSS control
1131    o cost terms in ecco/ modularized (new cost_generic.F)
1132    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1133    o new infrastructure for seaice model vs. obs misfits in seaice/
1134      * driver from the_main_loop.F is seaice_cost_driver.F
1135      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1136      * gradient check in Exp. 6a of natl_box_adjoint/
1137    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1138      (see README file)
1139    
1140    checkpoint57q_post
1141    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1142    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1143      - bug was reported by Jean-Michel and Ian Fenty
1144    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1145      update exp. cpl_aim+ocn output.
1146    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1147      Needed for high-res. runs with large global files
1148      to be able to limit tapelev size
1149    o Changed some tests for adjoint:
1150      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1151      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1152      * global_ocean.90x40x15/ back to default 3-level checkpointing
1153    o Modifications to enable scripted COMMON to MODULE conversion
1154      * verification/OpenAD/code/ has necessary scripts and description;
1155      * converts, compiles and runs successfully;
1156    
1157    checkpoint57p_post
1158    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1159    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1160      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1161    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1162    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1163      (was already the case for dissipation with mom_vecinv,
1164       and also the case for grad.PhiHyd when staggered-timeStep)
1165      This will allow to put dissipation out-off the AB time-stepping.
1166     Unfortunately, affects truncation error. Update output of exp. that "fails"
1167      (cg2d matching number) and leave the others for later: front_relax(10),
1168      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1169      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1170    
1171    checkpoint57o_post
1172    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1173      (2) its ready to be documented during the 20050801 DocFest
1174    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1175      for ideal_2D_oce and lab_sea on linux_ia32_g77
1176    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1177      in global1x1_tot/code_seaice_adj to access indices 32, 33
1178      (worth another tag)
1179    
1180    checkpoint57n_post
1181    o adding precip control xx_precip 32
1182    o adding swflux control xx_swflux 33
1183    o Replacing 10 forcing penalty cost routines by 1 generic.
1184    o Implementing partitioning in time-mean and variable adjustment
1185      for atmos. state.
1186    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1187    o in natl_box_adjoint:
1188      * updated exp 1 to 10
1189        (but does not have time-mean vs. variable split results yet)
1190    o updated global1x1/*_seaice_adj/
1191      to incorporate latest changes
1192    o enable useSingleCpuIO for mdsio vector routines
1193      (applies in particular to tapelev I/O)
1194    o removed inefficient K-loop in all active_file*control*.F
1195    
1196    checkpoint57m_post
1197    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1198      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1199    o pkg/exch2: filling of face-corner halo regions is optional
1200      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1201    
1202    checkpoint57l_post
1203     tag before updating tutorials (pre-release-2)
1204    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1205       for output and interpolation of input fields onto model grid)
1206    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1207       Affects results of exp. rotating_tank ; update output.txt.
1208    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1209          and taking the square quantity and/or using a fraction-weight field.
1210    o fix aim_diagnostics_init.F mate numbers.
1211    o add mnc output capability to diagnostics/diagstat and update
1212      our cvsignore files for the ACSII output generated
1213    
1214    checkpoint57k_post
1215    o lab_sea now uses diagnostics package and provides a suite of
1216      new EXF diagnostics output.
1217    
1218    checkpoint57j_post
1219    o exf
1220      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1221        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1222        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1223      * extended diagnostics output
1224        - now includes all EXF variables
1225        - hs, hl moved to common block
1226        - separate S/R for diagnostics, called after ctrl vector is added
1227        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1228        - EXFqnet contains true Qnet (i.e. includes qsw)
1229      * updated verif. lab_sea, global_with_exf
1230      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1231        to ensure that diagnostics sees a true EXFqnet
1232    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1233    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1234      several times with different frequencies.
1235    o mnc-ify the thsice package as requested by Daniel Enderton
1236      - the monitor--MNC output needs work
1237      - many attributes need to be added (most are currently blank)
1238    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1239      - many attributes need to be added (most are currently blank)
1240    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1241    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1242    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1243      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1244         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1245    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1246     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1247    
1248    checkpoint57i_post
1249    o Diagnostics package was changed: diagnostic allocation is now deactivated
1250      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1251    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1252      add 1rst Order upwind vertical Shear.
1253    o add a quick fix for A/B checkpointing in OFFLINE mode
1254    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1255      end-run around the C/Fortran linking horror in eesup/src/timers.F
1256    o added pkg/runclock: allows user to terminate run based on wall clock
1257    o added non-hydrostatic scaling parameter: nh_am2
1258    o pkg/my82: futile attempt to make results compiler-independent by adding
1259      some "_d 0", etc. no effect.
1260    o for mnc output, fill the 'T' coordinate var with myTime and create a
1261      separate 'iter' variable for iteration count
1262    o pkg/diagnostics:
1263      add new capability: output of Global/Regional & per-level statistics ;
1264      tested against monitor output (including land & thSIce) on various exp.
1265    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1266    
1267    checkpoint57h_done
1268      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1269      data.diagnostics, data.gchem, data.ptracers) is done.
1270    
1271    o pkg/diagnostics: prepare for Global/Regional statistics.
1272      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1273    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1274      and rename it: DIFFERENT_MULTIPLE
1275    
1276    checkpoint57h_post
1277    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1278    o pkg/diagnostics: change output frequency, now in seconds (instead
1279      of Nb of iterations). This requires to change data.diagnostics.
1280    checkpoint57h_pre
1281    
1282    o in mnc, let the user create the output dir if both mnc_outdir_date
1283      and mnc_outdir_num are false
1284    o add fflags() to pkg/diagnostics which allows one to specify, on a
1285      per-file basis, the file precision [default behavior is unchanged]
1286    o added diagnostics to pkg/kpp, including computation of mixed layer
1287      depth based on a temperature/density criterion
1288    o updated verification/natl_box to test the new pkg/kpp diagnostics
1289    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1290    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1291    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1292      not mnc -- this mistake was found by JMC and is now corrected
1293    
1294    checkpoint57g_post
1295    o add Adams-Bashforth 3rd Order time stepping:
1296      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1297      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1298    checkpoint57g_pre
1299    
1300    o make lambda[Theta,Salt]ClimRelax spatially varying
1301      (default remains spatially uniform constant based on tau)
1302    o added new control variables
1303      * init. uVel, vVel, etanN
1304      * lambda[Theta,Salt]ClimRelax
1305    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1306      (suggested by G. Forget)
1307    
1308    checkpoint57f_post
1309    o add parameter "baseTime" = model base time = time at iteration zero
1310      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1311      account for baseTime shift
1312    o move Coriolis arrays from PARAMS.h to GRID.h
1313    checkpoint57f_pre
1314    
1315    o mnc-ifying the seaice package
1316    o introduced an alternative length scale calculation for use in the limiting
1317      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1318    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1319    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1320      as well as grad(vort3).  Made it compatible with both approximate form
1321      for the cubed sphere and full form of these gradients.  Added flag
1322      useFullLeith to select between approximate and full form.  
1323    o add "d0" in getcon.F to reduce differences between compilers/platforms
1324      update output.txt of exp. fizhi-gridalt-hs
1325    o change port_rand funtion to allow to set the seed.
1326    o fix obscure MNC bug involving conversion between reals and integers
1327      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1328        new version is now more standards-compliant
1329    o adjoint-related modifications
1330      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1331      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1332      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1333    
1334    checkpoint57e_post
1335    o Adding eddy stress controls a la Ferreira et al.
1336    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1337    
1338    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1339      update output.txt of exp. fizhi-gridalt-hs
1340    o add more "Z" dimensions and associated coordinate vars to MNC
1341    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1342    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1343      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1344      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1345      months and years.  Requires pkg/cal.
1346    o diagnostics: add pickup functionality
1347      - off by default for backwards compatibility
1348      - current version only uses MDSIO -- MNC will be added
1349    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1350    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1351    
1352    checkpoint57d_post
1353    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1354    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1355      output from the diagnostics package
1356    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1357    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1358      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1359    o add coordinate variables to the MNC output from the diagnostics package
1360    o change MNC-flags default value: true when useMNC=TRUE
1361    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1362      the ability (off by default) to read the grid information using MNC
1363    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1364    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1365    o do snap-shot diagnostics at the middle of the time-interval (instead of
1366      at the end).
1367    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1368      new test for AIM with thSIce + slab-ocean
1369    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1370    o move state variable diagnostics to the beginning of the time step ;
1371      (note: still needs some work specially for snap-shot diagnostics)
1372      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1373    
1374    checkpoint57c_post
1375    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1376    o generate new output.txt files on faulks with g77 & the new -ieee option
1377    checkpoint57c_pre
1378    
1379    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1380      update output.txt of exp. global_ocean.90x40x15
1381    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1382      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1383    o add saltFlux(+File) forcing capability with periodicExternalForcing
1384    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1385    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1386    o improvements for the MNC output from DIAGNOSTICS:
1387      - correct handling of the unlimitied dimension
1388      - all dims now have associated coordinate variables
1389      - variables located at U, V, and Corner ("Z") points are now written
1390        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1391        *all* data points are output
1392    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1393    o added pkg/seaice/seaice_monitor.F
1394    o mdsio_readfield.F can now read files visible only to master MPI process.
1395    o pkg/seaice: some test code for ice-modified ocean stress
1396    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1397      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1398      spurious negative numbers for precipitation and humidity.  Will cause
1399      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1400    o pkg/ctrl/
1401      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1402        May be enabled via doPackDiag
1403      *  introduce z-scaling of
1404         + gradient (doZscalePack) and
1405         + control (doZscaleUnpack)
1406    o pkg/mdsio/
1407      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1408      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1409    
1410    checkpoint57b_post
1411    o simplify options in diagnostics_fill arguments (remove weird combinations)
1412    o fix MNC coordinate variables so that they now contain per-face index
1413      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1414      general, EXCH2 grids are only aligned to a "local" coordinate system
1415    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1416    o Implement instantaneous output within pkg diagnostics:
1417      setting a negative frequency in data.diagnostics produces
1418     "snap-shot" output (as opposed to time-average if freq > 0)
1419    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1420      NOTE: change ptracer diagnostics name: use 2 characters to work with
1421            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1422    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1423      becomes the coordinate variable for the 'T' dimension
1424    o add CF-style coordinate variables to MNC
1425      - just a first cut:  numbers are meaningless on the cubesphere and
1426        missing along the T axis but otherwise it works!
1427    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1428    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1429    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1430      this is based directly on what the model compute, so that the content of
1431      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1432    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1433    o clean up build options files for SunOS, in particular
1434      - remove -traditional from xmakedepend
1435      - change -xarch=v9 to -xarch=native for f77
1436      - restore use of make (not gmake)
1437      - add CC=gcc if using g77
1438    o changes per discussion of AM, JMC, & EH3 today:
1439      - move redundant "grid" variables out of "state" -- in preparation of
1440        creating proper CF-style coordinate variables and in recognition
1441        that any/all grid variables can be easily copied (eg. w/NCO) from
1442        the grid files into any of the other NetCDF files
1443      - *always* output grid variables with MDSIO (this will eventually be
1444        changed)
1445      - output MNC grid file if useMNC is true
1446    o every instance of _END_MASTER() has been found and replaced with
1447      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1448      preprocessors
1449    o re-arrange diagnostics pkg initialisation:
1450     - allow each package to extend the available diagnostics list
1451     - add some checking and fix small problems (multi-threaded, ...)
1452     - new S/R diagnostics_fill (replace fill_diagnostics):
1453       look through the short list of active diag. (instead of the long list)
1454       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1455    
1456    checkpoint57a_post
1457    o this set of changes restores TAMC compatibility
1458      tested for global_ocean.90x40x15 adjoint on trough
1459      (what a pain)
1460    
1461    checkpoint57a_pre
1462    o some modifs in tools/build_options for sunos
1463    o call ctrl_pack for ctrl at end for optimcycle=0
1464    
1465    checkpoint57
1466    o add horizontal bi-harmonic viscosity for vertical velocity
1467      - new parameter viscA4W (defaults to viscA4)
1468      - affects only non-hydrostatic code
1469      - to be done: no-slip lateral boundary conditions
1470    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1471    o implement Implicit Vertical advection for pTracers
1472    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1473      (implemented also for implicit vertical diffusion & advection)
1474    o OBCS: extend application of tracer open boundary conditions
1475      to a strip beyond the boundary of width Olx/Oly
1476    o add call monitor to TAF set of required calls (flow directives)
1477      and include in natl_box_adjoint
1478    o untangle a few ifdefs related to cost, ctrl, autodiff
1479      untangel a few ALLOW_ECCO_OPTIMIZATION
1480    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1481      (theta2, salt2 in ecco_cost_weights)
1482    
1483    checkpoint56c_post
1484    o OBCS as control variables
1485      - update ctrl_ad_diff.list, obcs_ad_diff.list
1486      - remove balance of obcs controls from default
1487      - fix index bug nobcs in ctrl_init
1488      - fix dummy fields filen in ctrl_pack
1489      - add dummy weights for obcs
1490    o lsopt: comment out fort.94 output
1491    o optim:
1492      - remove unnecessary header files
1493      - adjusted namelists
1494      - add xerbla.F to Makefile
1495    o exf:
1496      - multiple modifications of exf_check_range
1497      - unit change in exf_init_runoff from [m/year] to [m/s]
1498    o mdsio:
1499      - i/o-vector change debugLevel from debLevA to debLevB
1500    
1501    checkpoint56b_post
1502    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1503      is called from DO_THE_MODEL_IO
1504      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1505      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1506      - clean up PTRACERS_WRITE_TIMEAVE a little
1507    o add another verification experiment that tests both the cfc-pkg and
1508      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1509      reactive tendencies treated inline with regular timestepping
1510    o testreport previously did a lousy job of comparing small numbers, so
1511      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1512      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1513      testreport.
1514    o ptracers_monitor: bug fix for MPI
1515    
1516    checkpoint56a_post
1517    o GCHEM: finish reorganizating the package
1518      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1519        (introduces another 3D-array for each passive tracer, but only if
1520        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1521        gchemTendency is not needed because the timestep is done separately)
1522      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1523      - GCHEM is now---more or less cleanly---separate from PTRACERS
1524      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1525        so clear to me how that should be done in a general way.
1526    o CFC: improve formatting of output in CFC_ATMOS
1527    o PTRACERS:
1528      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1529        that ALL experiments with ptracers enable can be checked. This makes
1530        GCHEM_MONITOR obsolete.
1531      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1532        monitorFreq
1533      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1534    o add PTRACERS (PTR0[1-5]) to testreport output
1535    o exf_check_range:
1536      * default changed to .TRUE.
1537      * will check values for niter0 if debLevA, every timestep if debLevB
1538      * STOP in exf_check_range if 'out of range'
1539      * range chosen generous to allow for potential extema
1540      TBD: a version with stricter range
1541           permitted range would be runtime parameters
1542    o GMredi:
1543      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1544      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1545      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1546    o GCHEM:
1547      - move call to GCHEM_FORCING_SEP, so that it is now called before
1548        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1549      - introduced a useGCHEM runtime flag and applied it everywhere.
1550      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1551        this flag is now only visible within GCHEM-pkg routines.
1552      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1553        be replaced by a 3D array that is computed before thermodynamics; for
1554        this, the tracer ID iTracer had to be included into the parameter list
1555        of ptracers_forcing
1556      - set up forward_step to call gchem_forcing, that will replace
1557        gchem_forcing_int in ptracers_forcing
1558      - cleaning up
1559    o small cleaning of exch2: remove files that are also in eesupp/src
1560    
1561    checkpoint56
1562    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1563    o mnc: cleanup "full" files--fixes out-of-memory problem
1564    o ECCO-GODAE
1565      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1566      * fully merged and updated from SIO code
1567        windstress sign change affects
1568        - exf_inscal_[u/v]stress
1569        - sign of xx_tau[u/v] adjustments
1570        - signs in cost_scat
1571      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1572      * natl_box_adjoint updated and compressed
1573      * 2-level checkpoint switch added
1574        (tested in EXP. 1 of natl_box_adjoint)
1575      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1576    o SVD
1577      * first complete, non-hacked version for SVD calculations
1578      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1579        performed via direct access files admtlm_vector.it????
1580        (via ctrl_[un]pack)
1581      * optimcycle is used for ARPACK iteration counter
1582        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1583      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1584        and add linear transforms where necessary
1585      * controls are initial/final SST, SSS (can be extended; need to check
1586        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1587    o mdsio: filename info to both stderr, stdout
1588    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1589      from sign change
1590    
1591    checkpoint55j_post
1592    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1593      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1594    o add consistent build directories and .cvsignore files to verification
1595    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1596    o make all subroutines 30 or less characters in length for certain older
1597      compilers to work (a thorough search only turns up two routines in
1598      pkg/ptracers)
1599    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1600      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1601    
1602    checkpoint55i_post
1603    o change arrays for total vertical diffusivity (2.D if explicit,
1604      3.D if implicit) ; each ptracer uses its own background value.
1605    o added mnc/NetCDF output capability to ocn_compon_interf
1606      - added bits to verification/cpl_aim+ocn so that it can run on
1607        ITRDA and other clusters without the mpirun "-wd" option
1608    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1609      configuration
1610    o give MNC the ability to create additional files rather than
1611      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1612      - the default is just less than 2GB which is a practical limit
1613        on many systems
1614    o Compute the non-local term using either KPP vertical diffusivity (=default)
1615       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1616    
1617    checkpoint55h_post
1618    o add verification test "vermix"
1619    o remove all the *_ioinc flags and replace with the single global
1620      outputTypesInclusive flag
1621    o allow to set a vertical profile of vertical diffusivity for T & S
1622    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1623    o useMNC moved from data.mnc to data.pkg
1624    
1625    checkpoint55g_post
1626    o Renaming carbon AD experiments to comply with testreport conventions
1627    o Updating adjoint of Held-Suarez hs94.1x64x5
1628    o Fixing directives for non-ECCO forward_step, after ECCO directives
1629      have been fixed to avoid recomp. of do_oceanic_phys
1630      Works well for global_ocean.90x40x15,
1631      but recomp. issue remains for carbon
1632    o Updating adjoint output for natl_box_adjoint after
1633      pkg/ecco has been modified (see taga c55d_post)
1634    
1635    checkpoint55f_post
1636    o rename to timeave_init_fixed
1637    
1638    checkpoint55e_post
1639    o some delicate re-shuffle of store directives to avoid one
1640      extra call of do_oceanic_physics
1641      affects ecco_the_main_loop.F, do_oceanic_physics.F
1642      checkpoint_lev1_directives.h
1643    o NB: this may break global_ocean adjoint temporarily,
1644      but it is clear how to fix it. Will do later, need this now.
1645    
1646    checkpoint55d_post
1647    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1648    o ecco_cost_weights is modified to 1x1 runs
1649    o modifs to allow observations to be read in as
1650      single file or yearly files
1651    o enable to read exf forcing fields as either
1652      single file or yearly files (flag useExfYearlyFields)
1653    checkpoint55d_pre
1654    
1655    o switch between 2-level and 3-level checkpointing
1656    o add ability of MNC to write local and "partial" (eg. 2D slices where
1657      the full 3D field is never actually stored) arrays to NetCDF files
1658      with the correct (that is, the complete multi-dimensional) set of
1659      array indicies
1660      - used in mom_vecinv() to write the diagFreq output
1661      - tested (demonstrated) in verification/aim.5l_cs
1662    o further mnc-ification
1663      - add verification/lab_sea to the list with mnc setups
1664      - fix undefined mnc v-names in cd_code
1665      - add kpp to mnc output (both snapshot and timeave)
1666    o non-hydrostatic code
1667      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1668        in calc_gw.F
1669      - defaults to viscAh
1670      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1671        friction or Leith) in non-hydrostatic mode, as long as there is
1672        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1673    o pkg/cost
1674      extend simple cost functions to treat time mean quantities
1675      (T,U,V) via cost_accumulate_state from cost_tile
1676    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1677        be 2 times larger than the minimum size the advection scheme requires.
1678        now get a perfect conservation of salt in advect_cs test-exp (updated)
1679    o GGL90 (Gaspar's TKE mixed layer)
1680      - add horizontal diffusion of TKE, requires exchanges in
1681        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1682        default. In OPA there is no horizontal diffusion of TKE but the
1683        mixing coefficients are computed from a horizontal average of TKE of
1684        6 points or so. I think that diffusion has a little more physical
1685        justification.
1686      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1687        was in vain)
1688      - mask tke-variable in ggl90_init
1689    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1690    o fix biharmonic diffusion on CS-grid.
1691    o more obcs stuff
1692      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1693        for reading boundary values. This routine is called from
1694        obcs_prescribe_read
1695      - updated obcs_check
1696      - changed sponge layer relaxation parameter units for days to seconds
1697      - turned off sponge layer by default
1698      - changed argument list of OBCS_CALC to myTime+deltaTclock
1699      - fixed about 35 bugs in obcs_external_fields_load
1700    
1701    checkpoint55c_post
1702    o obcs stuff
1703      - new runtime flags useOBCSprescribe, useOBCSbalance
1704      - re-arranged obcs_calc
1705      - moved exf_getobcs to obcs_prescibe_read
1706        obcs_prescibe_read is called after ORLANSKI stuff
1707        and independent of it (executable can contain all).
1708      - updated obcs_check
1709      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1710        These may be necessary only if tangential velocities are
1711        prescribed at OB, not sure, needs testing.
1712    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1713      which simplifies the calls and passes the ifc check-bounds test
1714    
1715    checkpoint55b_post
1716    o add a 2D scalar, Z location, exchange_2 routine.
1717    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1718      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1719      affects advect_cs results (for the wrong reason): update output.txt
1720    o use a more standard discretization for biharmonic viscosity ;
1721     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1722      affects results of dome set-up: update output.txt
1723    o fix gad_advection.F (CubedSphere part), back to version 1.23
1724    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1725    
1726    checkpoint55a_post
1727    o merged code to
1728      * prescribe/read time-dependent open boundaries
1729        (works in conjunction with exf, cal)
1730      * sponge layer code for open boundaries
1731      * each boundary N/S/E/W now has its own CPP option
1732        (healthy for the adjoint)
1733    
1734    checkpoint55
1735    o up-to-date adjoint of previous breaks
1736      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1737      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1738      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1739      - carbon: * remove tr1-related adjoint verification
1740                * add ptracer as control variable
1741    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1742      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1743    
1744    checkpoint54f_post
1745    o in verification/carbin/ remove experiment related to
1746      ALLOW_PASSIVE_TRACER (array tr1 etc)
1747      code_ad/ input_ad/ results_ad
1748    
1749    o add two new packages
1750      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1751        + subject to optimization (memory)
1752      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1753        + subject to reordering (many GOTOs in the original code)
1754        + so far opps is called for every (i,j) point, and then operates in
1755          the vertical; one may want to reorder the scheme in order operate in
1756          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1757          fields)
1758    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1759      - all verification tests compile and run with linux_ia32_g77
1760      - defaults are compatible with current input files--nothing
1761        should change if you were not previously using MNC
1762      - MNC output has been added in numerous places (eg. timeave)
1763        but there are still a few writes not yet do-able with MNC
1764        (this is in progress)
1765      - flags now allow for either/or/both use of MDSIO and MNC and
1766        documentation will soon follow
1767      - numerous small formatting cleanups for ProTeX
1768    o add version info (via BUILD_INFO.h) to MNC and stdout
1769    
1770    checkpoint54e_post
1771    o add two new packages
1772      - pp81 (Packanowski and Philander, 1981), Richardson number and
1773        stratification dependent mixing
1774      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1775      - these scheme operate in a similar manner as KPP (without ghat, of
1776        course), however there is only one diffusivity that is used for both
1777        temperature and salinity (and passive tracers)ç
1778    o add offline package
1779    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1780      provided by Stephanie Dutkiewicz
1781    o genmake2: add ability to search for C compilers and cleanup test output
1782      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1783    
1784    checkpoint54d_post
1785    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1786    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1787      leading to additional shift by 5 days each year of integration
1788       (i.e. leading to considerable offset over the years)
1789    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1790    o start with no AB and no initial filtering (staggerTimeStep):
1791      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1792    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1793      (external loading & cpl import/export stay in forward_step.F)
1794    o update coupling interface to work with new staggerTimeStep
1795    o change MDSIO ptracers_pickup.
1796    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1797    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1798    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1799    
1800    checkpoint54c_post
1801    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1802      this affects (truncation error) output.txt of test-exp:
1803       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1804    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1805    o change Qnet to always be the net heat flux, (+upward).
1806      affects (truncation error) output of natl_box exp.: updated
1807    o define the max number of passive tracers in PTRACERS_SIZE.h
1808    o start to test mnc routinely in exp0
1809    o add sea-ice loading (sIceLoad) as a new forcing field.
1810    
1811    checkpoint54b_post
1812    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1813       impressive on Altix and Opteron systems)
1814    o diagnostics can now write NetCDF files through the mnc package
1815    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1816    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1817    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1818      affects (truncation error) output of lab_sea & natl_box exp.: updated
1819    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1820    
1821    checkpoint54a_post
1822    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1823    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1824    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1825    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1826      + internal_wave (shift in writing cg2d_ini_res)
1827    checkpoint54a_pre
1828    
1829    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1830      - modified verification/lab_sea and natl_box_adjoint accordingly
1831    
1832    checkpoint54
1833    checkpoint53g_post
1834    o prepare splitting of thermodynamics: store convect.counter in common block
1835    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1836      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1837    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1838    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1839    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1840    o restore adjointability
1841    
1842    checkpoint53f_post
1843    o modifications that affect AIM experiment results (update output.txt):
1844      - no advection of S at top interface Nr (pkg/generic_advdiff)
1845      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1846    o AIM pkg:
1847      - include stability function into surf.Flux derivative relative to Tsurf
1848      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1849    
1850    checkpoint53e_post
1851    o merged cylindrical coord configuration
1852    o added rotating_tank experiment
1853    checkpoint53e_pre
1854    
1855    checkpoint53d_post
1856    o faulks upgraded: re-generate output.txt that have changed:
1857       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1858    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1859    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1860    o added Sadourny discretization of Coriolis
1861      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1862      - re-enabled use of omega3 (useAbsVorticity)
1863    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1864      vector-invariant equations
1865      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1866    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1867      hopefully without new bugs
1868      - still to do: biharmonic friction for non-hydrostatic w
1869    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1870    o regenerated output for global_ocean_ebm (using -ieee)
1871    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1872      of mom_common/
1873      - simple re-arrangement of instructions within computing loop
1874    checkpoint53d_pre
1875    
1876    checkpoint53c_post
1877    o new version of coupler for AIM+thSIce and Ocean models
1878     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1879     - land: change Evaporation of snow
1880     - aim with thSIce: fix bug in snow-precip.
1881    o changes to calc_gw.F
1882     - bug fix for w^2 term near the bottom boundary
1883     - (hopefully) improve the lateral slip boundary condtions for use with
1884        partial/looped cells
1885      - because the bug fix changes two verification experiments anyway (exp5
1886        and plume on slope), change the lateral boundary condition from half slip
1887        to the value of no_slip_sides
1888    o ebm package wasnt quite up to the parallel task. Fixed that.
1889    o Adjoint of EBM package + verification
1890      * TLM OK
1891      * ADM not sufficient accuracy yet (needs further testing)
1892    
1893    checkpoint53b_post
1894    o Commiting new energy balance model to repository
1895      * package is pkg/ebm
1896      * verif. is verification/global_ocean_ebm
1897      * references are in ebm_driver.F
1898    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1899    C        Global thermohaline circulation. Part I:
1900    C        Sensitivity to atmospheric moisture transport.
1901    C        J. Climate 12(1), 71-82
1902    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1903    C        Global thermohaline circulation. Part II:
1904    C        Sensitivity with interactive transport.
1905    C        J. Climate 12(1), 83-91
1906    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1907    C        Destabilization of the thermohaline circulation
1908    C        by atmospheric eddy transports.
1909    C        J. Climate 7(12), 1870-1882
1910    o Will need long integration testing.
1911    checkpoint53b_pre
1912    
1913    o created pkg/mom_common in preparation for variable viscosity code
1914    o renamed and split ini_mnc_io
1915    o pkg/land: only liquid water can diffuse or run-off
1916    o AIM using land: soil wetness availability account for snow
1917    o added printMapIncludesZeros to EEPARMS namelist
1918    
1919    checkpoint53a_post
1920    o restore TAMC compatiility for exf_constants.h
1921      (no usage of _d in .h)
1922    o Additional storing in KPP in an attempt to fix
1923      TAMC problem with adjoint of KPP code.
1924      (no success...)
1925      Identical code works fine with TAF.
1926    o Fixed verification/natl_box_adjoint experiments.
1927      Initial conditions for Experiments 4 and 5 are now
1928      set to "SEAICE_initialHEFF=0", which is more reasonable,
1929      and hence gives results closer to that of Experiment 2.
1930      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1931    
1932    checkpoint53
1933    o stable checkpoint with up to date adjoint
1934      TLM tests only run for 1st grdchk at the moment. Its unclear if
1935      this is a code problem or a problem with resetting code for g_
1936      variables that is being autogenerated wrong.
1937      Otherwise:
1938       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1939       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1940         are both still in chaos following their security messes.
1941    
1942    checkpoint52n_post
1943    o various build (mostly genmake2) changes including:
1944      - ability to build/run more easily within Cygwin and MacOS X
1945      - more complicated Makefiles with a stronger dependence on Gnu Make
1946    o pkg/seaice modifications
1947      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1948        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1949        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1950      - changed proxy for geostrophic velocity and updated
1951        verification/lab_sea/results/* accordingly
1952      - removed ADI dynamic solver from pkg/seaice
1953      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1954        they caused a segmentation fault under certain circumstances
1955      - removed unused field WATR
1956    o bug fix in exf-package:
1957      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1958         now reflect that.
1959    o small fixes in the cal-package:
1960      - set reference date to first of January for the 'model'-calendar
1961      - failing of cal_CheckDate in cal_FullDate now actually results in a
1962        warning
1963    o small modifications in exf-package to increase flexibility:
1964      - change climtempfreeze from a constant to a runtime parameter that
1965        is specified in data.exf_clim (default = -1.9)
1966      - introduce runtime parameter windstressmax (default = 2.0) that is
1967        specified in data.exf
1968    o fix in pkg/thsice:
1969      - update Evap (Tsf changes) to be consistent with Latent heat flux
1970      - maintain snow precipitation unchanged (even if Tsf >=0).
1971     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1972    
1973    checkpoint52m_post
1974    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1975      this does not change any of the results, because myIter=0 in swfrac always
1976      lead to jwtype=2 (the default anyway), but the call makes little sense
1977      as a default
1978    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1979    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1980      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1981    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1982    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1983    o extending useSingleCpuIO option to work with new exch2 I/O format
1984      - old-style, missing-tile I/O is still accessible by defining CPP
1985        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1986    o monitor package can write to NetCDF files and/or STDOUT
1987    o fix re-definition bug in MNC_GRID_INIT_ALL()
1988    o doc/api_reference added
1989      - a framework for building an API Reference Manual using all
1990        the "protex" comments embedded in the code
1991      - see pkg/generic_advdiff, pkg/mnc for examples
1992    o MNC:
1993      - make myThid the last argument for all subroutines
1994      - new default for the grid files: NO halos
1995      - add useMNC and other run-time flags
1996      - separate per-file-group handling of the unlimited dimension
1997      - early initialization of MNC w/ flags read at the eeboot stage
1998        and lookup tables set in initialize_fixed
1999      - write all MNC output to a freshly-created directory
2000    o thermodynamics sea-ice (thsice) is now tested with testreport.
2001    o test exp. advect_cs: use the standard cs32 grid ; update output.
2002    o Added functionality to grdchk:
2003      pick global i,j,k position (or nearest wet) where to perform check.
2004    
2005    checkpoint52l_post
2006    o new land formulation:
2007      a) use ground enthalpy as prognostic variable to ensure exact
2008         energy conservation.
2009      b) account for water temperature and for latent heat of freezing
2010         in all processes (rain, run-off, ground storage)
2011      c) compute surface and ground temperature implicitly.
2012    o aim_v23 modification for new land model:
2013      a) Treat separately land / ocean / sea-ice surface fluxes
2014         to allow implicit computation of land & sea-ice surface temp.
2015      b) add snow precipitation.
2016    checkpoint52l_pre
2017    
2018    o fix problem (when 1 tile is empty) in min/max monitor.
2019    o fix bug in timeAve (u,vZetatave in common block)
2020    o no restoring terms under ice for pkg/seaice
2021    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2022    o bug fix for pkg/seaice pickups
2023    o change MNC call locations and add coordinate attributes
2024    o mask vorticity at the corner ; affects global_ocean.cs output
2025    o fix ini_curvilinear_grid ; test CS experiments with mpi
2026    o aim.5l_cs: modify sea-ice fraction input file ; update output
2027    o exf: Adding simple range check routine for exf fields after read
2028    
2029    checkpoint52k_post
2030    o removed top-level directory "diags"
2031      - we migrated these functions to pkg/timeave a long time ago
2032    o fixed bug introduced in pkg/monitor
2033    o accuracy ctrlprec = 32 insuffient for gradient checks using
2034      averaged fields (I/O via cost_averages)
2035      -> use ctrl.h in active_file*.F to control I/O precision.
2036    o paramter list of CALL ADTHE_MAIN_LOOP
2037    o added initial do_the_model_io to ecco
2038    o set all ...Freq to zero after cost_final
2039      taveFreq, dumpFreq, pChkptFreq
2040    o MAIN and ECCO differentiability restored
2041    
2042    checkpoint52j_post
2043    o fix nchklev in tamc.h for global_ocean...
2044    o Bringing flow and store directives up-to-date
2045    o Really weird thing!
2046      call do_the_model_io from the_main_loop with parameters
2047      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2048      TAF places a faulty re-call of initialise_varia
2049      after cost_final call which should not be there!
2050    checkpoint52j_pre
2051    
2052    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2053      error messages
2054    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2055    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2056      debug output
2057    o modfied mdsio_writefield.F to handle non-global files under exch2
2058    o update AIM Cubed-Sphere exp (aim.5l_cs):
2059      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2060    o update AIM Equatorial Channel exp:
2061      use standard aim_v23 pkg and change the SST fields to be more realistic.
2062    o globalFile now works with exch2
2063    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2064      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2065    o limit timeave output for hi-res integrations
2066    
2067    checkpoint52i_post
2068    o removed CPP_EEOPTIONS.h from verification/*/code
2069    o updated the tiling for global_ocean_pressure
2070    checkpoint52i_pre
2071    
2072    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2073      the old pkg/aim).
2074    
2075    checkpoint52h_pre
2076    o shortened offending lines in exch2_send_rx?.template
2077    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2078    o genmake2: add build & execute test for NetCDF code
2079    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2080      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2081    o added useSingleCPUIO flag to monitor.F and mon_out.F
2082    o added temporary hack for sea-ice dynamics on the cube:
2083      metric terms are ignored and it is assumed that
2084      there is no sea-ice on cube faces 1, 2, 4, and 5.
2085    
2086    checkpoint52f_post
2087    o added exch2 cube routines to pkg/exch2
2088    o modified hs94.cs-32x32x5 to use it
2089    o added new grid files to hs94.cs-32x32x5
2090    checkpoint52f_pre
2091    
2092    checkpoint52e_post
2093    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2094      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2095    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2096      to work with implicit vertical advection and AB ;
2097    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2098    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2099     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2100    checkpoint52e_pre
2101    
2102    o fix bug in impldiff when Nr=1 or Nr=2.
2103    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2104    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2105    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2106      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2107    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2108    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2109    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2110    
2111    checkpoint52d_post
2112    o re-tiled many expts to allow comparison in multi-processor mode
2113      - updated output accordingly
2114      - changed hs94.128x64x5 to use intial T from file rather than use the
2115        random number generator
2116    o add infrastructure in model routines for fizhi and gridalt packages
2117    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2118    o changes to permit hi-res, cubed-sphere, configuration
2119      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2120      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2121      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2122        of surface winds for the cube
2123      (A verification experiment, based on global_ocean.cs32x15, but with
2124       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2125       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2126       complete with example surface forcing files and matlab scripts to look
2127       at the output and compare it with that of global_ocean.cs32x15.)
2128    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2129       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2130       to conform to the common rule.
2131    o check-in the first version of the coupler + interfaces for multi-components
2132       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2133       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2134       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2135       - ocean and atmos. share the same horizontal grid (no interpolation).
2136       - exchanges between component and coupler is done in forward_step
2137    o new verification experiment, cpl_aim+ocn:
2138       coupled ocean - AIM atmosphere on cs32 grid.
2139    
2140    checkpoint52d_pre
2141    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2142    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2143    
2144    checkpoint52c_post
2145    o Fixing OPTIONS files for use of exf:
2146      - ALLOW_ECCO not needed
2147      - ECCO_CPPOPTIONS.h should not be included from
2148        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2149        as has been the case in the past
2150      - All cal/exf related options are currently set in
2151        single header file. Should remain so until we
2152        agree on a consistent new policy.
2153    o Removed all CPP options for cal package.
2154      cal has no more CPP options.
2155    o modified STOREs in GAD_ADVECTION
2156    o corrected key comp. for passkey
2157    
2158    checkpoint52b_post
2159    o new version: "thsice" of thermodynamic sea-ice pkg:
2160     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2161     - modify fluxes but do not change theta directly;
2162     - light cleaning of bulk_force pkg (still needed with thsice).
2163     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2164       + output_thsice.txt to test thsice & bulk_force pkgs.
2165    o put back grid & coriolis monitor output.
2166    checkpoint52b_pre
2167    
2168    o call "do_the_model_io" at the beginning (=> dump initial state)
2169    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2170    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2171      (need info on NUMBER_OF_PTRACERS)
2172    o missing PTRACERS headers in some routines
2173    o default tamc.h in pkg/autodiff supposed to crash
2174      to ensure proper customization
2175    
2176    checkpoint52a_post
2177    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2178      - moved surfaceTendencyTice from pkg/seaice to main code
2179      - subroutine FREEZE_SURFACE now limits only surface temperature
2180        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2181        => new output.txt for global_ocean.cs32x15 & global_with_exf
2182      - keep the old version of FREEZE for backward compatibility;
2183        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2184      - corresponding modifs for TAF directives
2185    o added surface flux output variables to TIMEAVE_STATVARS
2186    o time-averaged output for pkg/ptracers
2187    o fix problem with ECCO-related divided adjoint
2188      snapshot file was missing some ad-variables,
2189      but no warning issued by TAF
2190    
2191    checkpoint52a_pre
2192    o some bug fixes for #undef REAL4_IS_SLOW
2193    
2194    checkpoint52 = ecco_c52_e35
2195    o after testing adjoints of checkpoint51u_post
2196    
2197    checkpoint51u_post
2198    o this is the post-merge tag of the ecco-branch
2199      (needs another clean checkout and re-testing)
2200    o various natl_box_adjoint configs and results
2201      but no input fields
2202    o obcs adjoint not yet merged!
2203    o adding ECCO global 1x1 and 2x2 degree configs
2204    o updated/extended some store directives for seaice
2205    o pkg/ecco now containes ecco-specific part of cost function
2206    o top level routines the_main_loop, forward_step
2207      supersede those in model/src/
2208      previous input data.cost now in data.ecco
2209      (new namelist ecco_cost_nml)
2210    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2211    
2212    checkpoint51t_post
2213    o this is the pre-merge tag of the ecco-branch
2214    
2215    checkpoint51s_post
2216    o cleanup: removed various obsolete #define-s
2217    o pkg/grdchk
2218      - renamed 'ph-grd 3' to 'grad-res'
2219      - merged from ecco-branch
2220        (remaining bug fixes for obcs gradient checks)
2221      - additional high-precision output for testreport
2222        (grep for 'precision_grdchk_result')
2223    
2224    checkpoint51r_post
2225    o cleaned up or removed CPP_OPTIONS.h files
2226    o updated results for some of the tests to reflect the new
2227      optfiles (-ieee: -O0 instead of -O3)
2228    
2229    checkpoint51q_post
2230    o cd_code:
2231      - moved cd_scheme.F -> cd_code_scheme.F
2232      - separate read_checkpoint from cd_code_ini_vars.F
2233      - separated cd_code part from write_checkpoint
2234      - updated AD_SOURCE, generated .flow
2235      - added CD_CODE_VARS.h to the_main_loop
2236      - Moving cd_code specific store dir.s to pkg/cd_code
2237    o ctrl package totally restructured
2238      - pack/unpack now optional and decoupled from
2239        xx_/adxx_ I/O
2240      - ctrl_pack/unpack cleaned
2241        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2242      - confined inclusion of AD_CONFIG.h to where necessary.
2243    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2244    
2245    checkpoint51p_post
2246    o create initial cd_code package
2247      - WARNING: the initialization of fields within packages
2248        is broken because INI_FIELDS (where READ_CHECKPOINT is
2249        called) is called *before* PACKAGES_INIT_VARIABLES.
2250        This seems to be backwards since
2251        1) its important to initially zero the entire field including
2252           the "halo" region
2253        2) zeroing needs to be done *before* reading pickup info
2254           and the pickup call might or might not happen in any
2255           particular run
2256      - this needs an overhaul for R2
2257    o cleanup verification/*/code/GMREDI_OPTIONS.h
2258    o cleanup testreport
2259    
2260    checkpoint51o_post
2261    o bringing AD-related verif's up to date with genmake2
2262      - carbon/
2263      - global_ocean.90x40x15/
2264      - hs.94.1x64x5/
2265      - (front_relax/ )
2266    o (more) consistent directory structure for AD-related verif.'s
2267    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2268    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2269    o bug fix in find_alpha.F for MDJWF:
2270      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2271        change rho -> rho-rhoConst
2272      - replace call find_rho to find_rhonum
2273    o initialisation of rFlx extended to full array (required by TAF)
2274      and shifted to thermodynamics
2275    o removed PTRACERS.h in ptracers routine
2276    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2277    o Correcting initialisations for fVerU, fVerV.
2278    o helping TAF to recognize dependency on kUp for
2279      fVerU, fVerV
2280    o Replacing delZ by delR in pkg/ctrl/
2281    checkpoint51o_pre
2282    
2283    o undid all of cp51 pending some cleanups and discussion
2284    o added the [#include "AD_CONFIG.h"] statement to all files that need
2285       it for adjoint/tl #defines
2286     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2287     o removed tools/genmake since it no longer works
2288    
2289    checkpoint51n_post
2290    o modifications to make FREEZE flux visible to pkg/kpp
2291      - moved surfaceTendencyTice from pkg/seaice to main code
2292      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2293      - subroutine FREEZE now limits only surface temperature
2294        (this means new output.txt for global_ocean.90x40x15,
2295         global_ocean.cs32x15, and global_with_exf)
2296    o added surface flux output variables to TIMEAVE_STATVARS
2297    
2298    checkpoint51n_pre
2299    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2300    o added [#include "AD_CONFIG.h"] to all files that use the following
2301      defines:
2302      - ALLOW_ADJOINT_RUN
2303      - ALLOW_TANGENTLINEAR_RUN
2304      - ALLOW_ECCO_OPTIMIZATION
2305    
2306    checkpoint51m_post
2307    o incorporating changes to get TAMC/TAF working in genmake2
2308      - added new TAMC/TAF targets to the Makefile
2309      - various cleanups related to package handling
2310      - these changes should have no impact on the forward model
2311    
2312    checkpoint51l_post
2313    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2314     - faster algorithm for cal_addtime.F
2315     - higher precision arithmetic, where needed
2316     - pkg/exf *startdate variables changed from calendar date to
2317       model integration time
2318    
2319    checkpoint51l_pre
2320    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2321    o enable to apply restoring on S & T only in a latitude band.
2322    o update output (external_forcing_surf modif. change truncation errors)
2323       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2324    
2325    checkpoint51k_post
2326    o change default to: useNHMTerms=.FALSE.
2327     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2328       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2329     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2330        exp1, ideal_2D_oce
2331     - change data file of oceanic exp (leave the results unchanged for now)
2332       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2333    o set gravitySign automatically according to the vertical coordinate used
2334      (and change sign: back to "logical" value: +1 when R increases downward)
2335    o added an include barrier to the default CPP_OPTIONS.h and
2336      removed the #include "PACKAGES_CONFIG.h" from it
2337    o fix a bug in mom_fluxform (from chk51j_post)
2338    
2339    checkpoint51j_post
2340    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2341    o adjusted some flow directives (dynamics, thermodynamics)
2342    o added cubed-sphere case to test cost function
2343    o heckpoint_lev?_directives.h now include
2344      pkg-specific directives, whenever those are enabled.
2345    o Moving pkg-specific flow directives to corresponding pkg
2346      Moving pkg-specific differentiation list to corresponding pkg
2347      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2348      ---> conventions are
2349           - pkg_ad.flow
2350           - pkg_ad_diff.list
2351           - pkg_ad_check_lev?_dir.h
2352    
2353    checkpoint51i_post
2354    o merge of the branch-genmake2
2355      - knowingly breaks the older genmake
2356      - automatic generation of all ALLOW_${PKG_NAME} defines
2357      - new testreport supersedes older testscript
2358    o large number of package inclusion and header cleanups
2359    checkpoint51i_pre
2360    
2361    o new output for adjoin of global ocean vector invariant
2362    o fix for checkpoint of thermodynamic seaice and bulk_force
2363    o Steph gchem various cleanups
2364    
2365    checkpoint 51h_pre
2366    o fixed some single quotes
2367    o modify gchem pkg to be more versatile
2368    o modifications to clean up dic pkg
2369    o add pkg/cfc
2370    
2371    checkpoint51g_post
2372    o provide links for ARPACK and ADM*TLM
2373    o start removing verification/vero/
2374    o update AD-related stuff
2375      (in particular some IF-statements in model/src/ routines)
2376    o adding to verification/global_ocean.90x40x15/ adjoint of
2377      vector invariant setup
2378    
2379    checkpoint51f_post
2380    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2381    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2382      of tracer Green's fucntions for ocean inversion project.
2383    
2384    checkpoint51f_pre
2385    o Added on-the-fly spatial interpolation capability
2386        "USE_EXF_INTERPOLATION" to pkg/exf.
2387      - This is a temporary Cartesian-grid hack until
2388        the super-duper ESMF coupler becomes available.
2389      - See verification/global_with_exf/README for usage example.
2390      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2391        flags and modified pkg/seaice accordingly.
2392    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2393        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2394        non-local transport term.
2395    
2396    checkpoint51e_post
2397    o pkg/mom_vecinv:
2398      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2399      - add time-ave diagnostic of vorticity advection.
2400    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2401    o atmospheric geopotential: - include water vapor effect;
2402                                - use p^kappa in p* scaling.
2403    o land pkg: read initial state from files.
2404    o AIM : add stratospheric drag in the upper level
2405    
2406    checkpoint51d_post
2407    o change function ILNBLNK (=> last non-blank char.) to return zero
2408      (instead of the string length) when the string. char is empty
2409    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2410    o modif's to restore TAMC compatibility
2411      - avoid "_d" constructs in PARAMETER declarations
2412      - avoid interrupting lines by comment lines
2413    o Use cluster local disks for purely local I/O
2414      vs. globally visible disks needed for ctrl stuff
2415      (merged from ecco-branch)
2416      - new active_file_loc... and mdsio_..._loc routines
2417      - affected packages: autodiff, ctrl, grdchk, mdsio
2418    
2419    checkpoint51c_post
2420    o introducing integer flag debugLevel
2421      - debLevZero: suppress all output
2422      - debLevA: standard
2423      - debLevB: equivalent to current debugMode=.TRUE.
2424    o introducing pathname variable mdsioLocalDir for mdsio
2425      that can be specified at runtime
2426      (relevant for cluster I/O to local disk)
2427    `
2428    >>>checkpoint51b_post
2429    adjoint of ptracers
2430    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2431    o extended state in checkpoint_lev?, etc.
2432    o alternative ctrl/cost with tr1 or ptracer
2433    o new comlev1_bibj_ptracers
2434    o new ptracers.flow
2435    o made ptracers_forcing same as external_forcing_s
2436    o added verification for adjoint with ptracers
2437      - adm. grdchk fail so far
2438      - tlm. grdchk OK
2439      - checked tapelev/comlev recomputations: OK
2440    <<<checkpoint51b_pre
2441    
2442    checkpoint51a_post
2443    o added code for biogeochemistry package
2444      - new pkgs: dic, gchem
2445      - new subroutine in ptracers
2446    o modify code for biogeo packages
2447      - in model/src and pkg/ptracers
2448    
2449    checkpoint51
2450    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2451      - autodiff, ctrl, exf, grdchk, seaice
2452      kept separate packages
2453      - cost, ecco, obcs
2454    o updating verification/internal_wave, verification/lab_sea
2455      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2456    
2457    checkpoint50i_post
2458    o Preparing next differentiable checkpoint and sync
2459      of MAIN vs. ecco-branch
2460      - 1st step: this one is differentiable
2461      - 2nd step: next(! not this) checkpoint will have updated packages
2462                  from ecco-branch)
2463    
2464    checkpoint50h_post
2465    o new package "land": provide surface BC for AIM.
2466    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2467    o AIM: use true log-P extrapolation for near surface temp (= as in
2468        F.Molteni paper) ; update aim.5l_cs output.
2469    o New variable in PARM03 for more flexible pickups
2470    o somewhat cleaned package initialisation sequence for
2471      ctrl/ cost/ ecco/ in packages_... routines
2472    
2473    checkpoint50g_post
2474    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2475      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2476      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2477        made the default because of faster convergence than ADI
2478    
2479    checkpoint50f_post
2480    o exf totally restructured
2481      - replaced all exf_set_ routines by one generic exf_set_gen.F
2482        and made sure it's still differentiable
2483      - split exf_getffields.F into new exf_bulkformulae.F
2484      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2485      - updated adjoint/makefile and relevant verif. accordingly
2486    
2487    checkpoint50f_pre
2488     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2489          + change Evap over land. (update aim.5l_cs output)
2490     o added missing .cvsignores and made uniform across expts
2491     o changed configuration of tidal_basin_2d expt
2492     o added pkg/debug functions for tracing code in fatal crashes
2493     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2494     o new fn in pkg/monitor to stop model if solution grows too big
2495     o removed lots of single quotes from comments
2496    
2497    checkpoint50e_post
2498    o make KPP work with PTRACERS
2499     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2500       nearly a copy of kpp_transport_s
2501     - there is no analogue to SurfaceTendencyS, so I have to use
2502       gPtr(of the surface layer) instead
2503    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2504    checkpoint50e_pre
2505    
2506    checkpoint50d_post
2507    o change kpp output from multiple-record state files to single-record state
2508      files analogous to write_state.F
2509    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2510      analogous to the cg2d-related output.
2511    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2512      so that writing to internal file fn (with length 512) fails.
2513    checkpoint50d_pre
2514    
2515    checkpoint50c_post
2516    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2517    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2518    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2519    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2520    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2521    
2522    checkpoint50c_pre
2523    Merging from release1_p13:
2524    o bug fix for pkg/seaice dynamic solver
2525    o Added SEAICE_initialHEFF to pkg/seaice
2526    
2527    checkpoint50b_post
2528    o store u*,v* in gU,V instead of in guNm1,gvNm1
2529    o in order to put the momForcing out of the Adams-Bashforth:
2530      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2531      to timestep.F
2532    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2533    o re-generate output for highly sensitive test-exp:
2534       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2535    
2536    checkpoint50b_pre
2537    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2538    o corrected CPP option mismatch in exf_Bulk... functions for case
2539      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2540    
2541    checkpoint50a_post
2542    o Bug fix for merging between c50 and KPP.
2543      ikey was passed from thermodynamics to kpp_calc via
2544      common block rather than being recomputed in kpp_calc,
2545      in contradiction with new key itdkey.
2546      New key ikppkey created, and tamc.h headers updated.
2547    
2548    checkpoint50
2549    - 2nd step of merge with ecco-branch:
2550      merge changes in ecco-branch back into main trunk
2551    - bug fix in find_alpha
2552    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2553    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2554    - merged some sliced AD support routines
2555    
2556    checkpoint49
2557    merged from ecco-branch:
2558    o exf:
2559      - Enable initialisation of forcing fields to constant
2560        (runtime) values.
2561      - in exf_getffields.F
2562        Reduce i-/j-loop to interior domain, discarding overlaps.
2563        That also fixes wrong TAF-key computations for key_1, key_2
2564        with bulf formulae.
2565      - exf_init.F modify #ifdef for exf_init_evap
2566      - exf_getffieldrec.F, ctrl_getrec.F
2567        The following INT-usages are not safe:
2568          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2569          fldcount = int(fldsecs/fldperiod) + 1
2570        and were modified.
2571    o autodiff: checkpoint_lev...
2572      - updated storing for bulk formulae (some arrays were missing)
2573      - added state for seaice package
2574      - synchronized with main branch
2575    o DIVA:
2576      Modif.s in
2577      - the_main_loop.F
2578      - the_model_main.F
2579      and added cost_final_restore.F cost_final_store.F
2580      o With these changes, it is possible to fully separate
2581        the first forward run to compute the cost function (mdthe_main_loop)
2582        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2583        into separate model executions.
2584        This enables better tuning of DIVA to given queue sizes.
2585      o Loss of cost function value in consecutive DIVA runs is
2586        fixed by storing to 'costfinal' file.
2587      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2588        beginning/end of adjoint integration is accounted for.
2589      The current changes apply to TAF-1.4.26.
2590      TAF has one remaining bug, requiring one manual change
2591      (see MITgcm manual).
2592    o cal: synchronized between MAIN and ecco-branch
2593    
2594    checkpoint48i_post
2595    o Changes to restore differentiability of code w.r.t. previous tag
2596      (mostly adding new routines to make list and replacing
2597      pressure by totPhiHyd).
2598    o Updated and merged grdchk package
2599      - has both ADM and TLM checks
2600      - works for single- and multi-proc.
2601      - output cleaned
2602      - worked successfully for parallel DIVA
2603    o genmake:
2604      - Adding -platform=SP4
2605      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2606    o Modif. for DIVA:
2607      ctrl_unpack should not be called in intermediate DIVA interval.
2608      (similar thing would apply for active files such as
2609      tbar, sbar, psbar, which should not be reinitialised;
2610      only relevant for ecco-branch)
2611    
2612    checkpoint48h_post
2613    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2614    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2615    o Added SEAICE_initialHEFF to pkg/seaice
2616    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2617    
2618    checkpoint48g_post
2619    --- EOS:
2620    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2621      store total Potential in totPhyHyd for diagnostics & EOS.
2622    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2623    --- Pressure/geopotential gradient:
2624    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2625    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2626      ( changes results of global_ocean_pressure )
2627    o NLFS + z-coord.: add eta*Rho' contribution.
2628    o accurate phiHyd when using interface-W at the middle between 2 centers
2629     ( changes results of ideal_2D_oce )
2630    o includes r* 2nd term in potential gradient.
2631    
2632    checkpoint48f_post
2633    Merging from release1_p12:
2634    o Modifications for using pkg/exf with pkg/seaice
2635      - improved description of the various forcing configurations
2636      - added basic radiation bulk formulae to pkg/exf
2637      - units/sign fix for evap computation in exf_getffields.F
2638      - updated verification/global_with_exf/results/output.txt
2639    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2640      (SBO) core products, including oceanic mass, center-of-mass,
2641      angular, and bottom pressure (see pkg/sbo/README.sbo).
2642    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2643      to avoid negative values in shallow regions.
2644      - updated verification/natl_box/results/output.txt
2645      - updated verification/lab_sea/results/output.txt
2646    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2647    o Added useSingleCpuIO option (see PARAMS.h).
2648    o Updated useSingleCpuIO option in mdsio_writefield.F to
2649      work with multi-field files, e.g., for single-file pickup.
2650    o pkg/seaice:
2651      - bug fix in growth.F: QNET for no shortwave case
2652      - added HeffFile for specifying initial sea-ice thickness
2653      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2654    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2655      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2656    o pkg/seaice:
2657      - adjoint-friendly modifications
2658      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2659    
2660    checkpoint48e_post
2661    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2662    o dynamics: change definition of computational domain & adapt mom_fluxform
2663      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2664    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2665        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2666        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2667        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2668        inverted_barometer solid-body.cs-32x32x1
2669      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2670    
2671    checkpoint48d_post
2672    o in preparation for r*:
2673     a) use pre-computed gradient of hydrostatic potential:
2674        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2675     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2676        => affects results of glob_oce_pressure (different truncation error)  
2677      update output.txt of ideal_2D_oce & global_ocean_pressure
2678    
2679    checkpoint48d_pre
2680    o in preparation for r*:
2681      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2682      pass the 2 comp. of the grad. as arguments to momentum S/R.
2683      but for the moment, only used if it does not change the results.
2684    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2685    
2686    checkpoint48c_post
2687    Modifications in treatment of initial flux forcing controls
2688    to avoid extra storing of flux fields.
2689    
2690    checkpoint48c_pre
2691    o Added tidal_basin_2d experiment (currently 1D!)
2692    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2693    
2694    checkpoint48b_post
2695    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2696     (modification to pressure gradient not yet implemented)
2697    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2698      (for U & V) that are used for vertical advection of momentum.
2699    
2700    checkpoint48a_post
2701    o In preparation for r*, use temp. array to compute vertical transport
2702       in flux-form momentum pkg. => change results of few test-exp.
2703      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2704                        lab_sea, natl_box & plume_on_slope
2705    
2706    checkpoint48
2707    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2708    
2709    checkpoint47j_post
2710    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2711    o moved adexch from forward_step to addummy_in_stepping
2712    o added exch in ctrl_map_...
2713    o aveFreq.=0. at end of cost_final to avoid overwrite in
2714      reverse checkpointing loop
2715    o Yet more changes in gmredi:
2716      * adgmredi_calc_tensor
2717        avoiding all recomputation of gmredi_slope_limit
2718      * adgmredi_x/y/rtransport
2719        added flag for excessive storing to avoid recomp. of
2720        u/v/rtans, dTdx/y/z
2721        -> this is not really necessary and very memory-consuming
2722      * adgmredi_slope_psi:
2723        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2724      * gmredi_slope_limit
2725        re-activated full calculation of taperfct for case 'ac02'
2726    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2727    
2728    checkpoint47i_post
2729    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2730    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2731      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2732    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2733    o gmredi: fix few bugs.
2734    
2735    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2736    This will be a good checkpoint to plug into the ecco-branch.
2737    o few modif.'s to get latest version adjointed
2738      (mainly kick out code in ini_linear_phisurf)
2739    o modif's to run adjoint with exactConserv
2740    o case GM_BOLUS_ADVEC should be cleaned
2741      S/R gmredi_slope_psi should be cleaned
2742    o verification/carbon now has exactConserv=.TRUE.
2743    
2744    checkpoint47g_post
2745    o time-average AIM output: becomes independent from statvars time-average
2746      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2747    o After TAF bug fix:
2748      Tested adjoint of gmredi package.
2749      Tests were done with checkpoint47 rather than with latest
2750      checkpoint47f_post since the latter is broken for the adjoint
2751      verification/carbon/ contains both ADM and TLM gradient checks.
2752    Here they are, before they get changed/lost/stolen.
2753    Mostly modif.'s to fix numerical sensitivities.
2754    Gradient checks OK for
2755    - GM_taper_scheme:
2756      * clipping
2757      * ac02
2758      * linear
2759      * glw91
2760      * dm95
2761      * ldd97
2762    - GMREDI_OPTIONS:
2763      * GM_VISBECK_VARIABLE_K
2764      * GM_NON_UNITY_DIAGONAL
2765      * GM_EXTRA_DIAGONAL
2766      * GM_BOLUS_ADVEC
2767    in conjunction with data.gmredi parameters to be checked in
2768    in a few minutes under verification/carbon/code/
2769    
2770    checkpoint47f_post
2771    Merging from release1_p10:
2772    o modifications for using pkg/exf with pkg/seaice
2773      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2774        and SEAICE_EXTERNAL_FLUXES
2775      - pkg/exf CPP options EXF_READ_EVAP and
2776        EXF_NO_BULK_COMPUTATIONS
2777      - usage examples are Experiments 8 and 9 in
2778        verification/lab_sea/README
2779      - verification/lab_sea default experiment now uses
2780        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2781    
2782    checkpoint47e_post
2783    o created a tag prior to creating a branch
2784    
2785    checkpoint47d_post
2786    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2787      at the bottom boundary had an erroneous half slip boundary condition
2788    o added bottom drag and no slip boundary condition capabilities to
2789      oceanic pressure coordinates code
2790    o added new verification experiment global_ocean_pressure, this experiment is
2791      also described in the tutorial section of the manual
2792    checkpoint47d_pre
2793    
2794    checkpoint47c_post
2795    o Added a verification experiment for a global cubed-sphere ocean run
2796      -  verification/global_ocean.cubed32x32x30
2797      -  uses pkg/therm_seaice and pkg/bulk_forcing
2798    
2799    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2800    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2801      when using P-coordinate; only implemented for atmospheric config.
2802    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2803      NOTES: requires option NONLIN_FRSURF to be "#define".
2804    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2805    
2806    checkpoint47b_post
2807    Merging from release1_p9:
2808    o pkg/seaice
2809      - removed GOTO's and added taf directives
2810      - double precision constants to reduce the g77 (Linux)
2811        to F77 (SGI) differences reported in release1_p8
2812    o tools/genmake
2813      - added SGI options
2814    o verification/testscript
2815      - updated to that of checkpoint47a_post
2816    o verification/global_ocean.90x40x15/input/eedata
2817      - modified for SGI f77 compatibility
2818    o verification/lab_sea
2819      - added description of sea-ice model
2820      - added missing matlab routines
2821      - added test of thermodynamics parallelization
2822    
2823    checkpoint47a_post
2824    o new pkg: aim_v23
2825     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2826       for now, keep the same surface forcing as before.
2827     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2828     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2829     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2830    o add diagnostic of surface correction term in monitor output
2831    
2832    o bulk_force and therm_seaice
2833    - Two packages:  bulk_force (Bulk forcing)
2834      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2835    - Earlier integration from Stephaine Dutkiewicz
2836      and Patrick Heimbach.
2837    - Two ifdef statements for compile time,
2838       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2839    
2840    checkpoint47
2841    differentiable version of checkpoint46n_post
2842    o bug fix in quasihydrostaticterms
2843    o * "clean" adjoint code (in terms of extensive recomputations)
2844        can now be obtained for all GMREDI options (i.e. for
2845        - GM_VISBECK_VARIABLE_K
2846        - GM_NON_UNITY_DIAGONAL
2847        - GM_EXTRA_DIAGONAL
2848        - GM_BOLUS_ADVEC )
2849      * However, wrong gradient check problem remains unsolved.
2850      * New CPP options have been introduced for different
2851        tapering schemes
2852    o external_fields_load now part of differentiation list
2853    o pressure needs multiple storing;
2854      would be nice to have store_pressure at beginning or
2855      end of forward_step, e.g. by having phiHyd global (5-dim.)
2856      (NB: pressure is needed for certain cases in find_rho,
2857      which is also invoked through convective_adjustment).
2858    o recomputations in find_rho for cases
2859     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2860    o #define ATMOSPHERIC_LOADING should be differentiable
2861    o ini_forcing shifted to begining of initialise_varia
2862    o Incorporating QNVS line search routines into MITgcm
2863      (this is separate code, and therefore not under pkg)
2864      lsopt/, optim/
2865    o Updated verification/carbon/
2866      - #define GM_VISBECK_VARIABLE_K
2867      - GM_taper_scheme    = 'ldd97'    
2868    
2869    checkpoint46n_post
2870    Merging from release1_p8:
2871    o verification/natl_box:
2872      updating new external_fields_load routine
2873    o New package: pkg/seaice
2874      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2875      The sea-ice code is based on Hibler (1979-1980).
2876      Two sea-ice dynamic solvers, ADI and LSR, are included.
2877      In addition to computing prognostic sea-ice variables and diagnosing
2878      the forcing/external data fields that drive the ocean model,
2879      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2880      The implied surface heat flux is then stored in variable
2881      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2882      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2883      non-local transport term.  Because this call precedes model
2884      thermodynamics, temperature under sea-ice may not be "exactly" at
2885      the freezing point by the time theta is dumped or time-averaged.
2886      N.B.: fairly large differences in accuracy occur across
2887            different platforms/compilers; comparison between
2888            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2889            generated output gives:
2890       T           S           U           V
2891      C D M    c        m  s        m  s        m  s        m  s
2892      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2893      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2894      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2895    
2896      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2897    o GAD:
2898      - generated new common blocks to account for call of
2899        same gad routines with differing traceridentities
2900        (needed to modify tracerIdentity indices in GAD.h)
2901      - generated separate common blocks for case useCubedSphereExchange
2902        (Department of Futurology)
2903      - parameter lists to gmredi_?transport: added tracerIdentity
2904      - added new key indices to tamc.h
2905    o external_fields_load:
2906      - added this routine to TAF list
2907      - needed to make some common blocks global and additional storing
2908        along the same lines as exf package (checkpoint_lev?_directives.h)
2909    o exf:
2910      updated external forcing package
2911      - bug fixes carried over from ecco-branch
2912        (missing OBCS_OPTIONS.h in two routines)
2913      - enable easy to use "no forcing".
2914      - added exf I/O for atmospheric loading
2915      - added exf I/O for runoff data
2916      - transfered scaling between exf <-> MITgcm to exf namelist
2917    o Adding new verification experiment global_with_exf.
2918      This verification experiment is almost identical to the
2919      global_ocean.90x40x15 experiment, except that it uses
2920      the exf (and cal) package instead of the
2921      external_fields_load routine (cf README file).
2922    
2923    checkpoint46m_post
2924    o modified testscript to return -- when there are no lines of "%MON" output
2925    o added new flag "quasiHydrostatic" for QH mode
2926      and new routine quasihydrostaticterms()
2927    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2928      New routine: mom_u_coriolis_nh()
2929    o fixed sign of non-hydrostatic metric terms in u and v equations.
2930      Depend on correct sign of gravitySign.
2931    o added work.pc* to .cvsignore in aim directories using ifc
2932    o introduced flag for controllin non-hydrostatic metric terms
2933    o removed gravitySign from PARM04
2934    o switched to g77/ifc from pgf77 in aim experiments
2935    
2936    checkpoint46l_post
2937    o made convective adjustment work with pressure coordinates:
2938     - changed the direction of k-loop in convective_adjustment.F for the
2939       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2940     - adjusted the reference pressure k-index in convective_adjustment.F
2941     - adjusted the convection condition in convect.F (in analogy to
2942       calc_ivdc.F)
2943     - convective_adjustment no longer computes anything on the halos
2944     - removed the warnings about negative salinity from find_rho.F and
2945       find_alpha.F; instead the new routine look_for_neg_salinity, called
2946       at the beginning of find_rho, find_alpha, and find_beta, does a
2947       check of the entire slice, if CPP-option
2948       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2949    checkpoint46l_pre
2950    
2951    checkpoint46k_post
2952    o fixed the verification/global_ocean.90x40x15 experiment:
2953     - new bathymetry (the world according to A., JMC, and M.)
2954     - new initial fields and forcing fields (*.bin files)
2955     - new POLY3.COEFFS (for the next release one should switch to a full
2956       equation of state: JMD95P or MDJWF)
2957     - fixed several errors and redundancies in the data file
2958     - experiment uses looped cells
2959     - added matlab directory with diagnostic scripts for plotting of output
2960    
2961    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2962     - read AIM physics parameters from a file (data.aimphys)
2963     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2964    
2965    checkpoint46j_post
2966    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2967    o move wVel computation at the end of the time step, in S/R integr_continuity
2968    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2969    o update timeave pkg for wVel diagnostic.
2970    checkpoint46j_pre
2971    
2972    checkpoint46i_post
2973    o Clean up AIM package (and keep the results unchanged):
2974      include CPP_OPTION and use IMPLICT NONE in all routines ;
2975      declare all the variables _RL ; use _d 0 for all numerical constants.
2976      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2977    
2978    checkpoint46h_post
2979    o cleaned up the use of rhoNil and rhoConst.
2980      - rhoNil should only appear in the LINEAR equation of state, everywhere
2981        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2982        and the dynamical equations are all divided by rhoConst
2983    o introduced new parameter rhoConstFresh, a reference density of fresh
2984      water, to remove the fresh water flux's dependence on rhoNil. The default
2985      value is 999.8 kg/m^3
2986    o cleanup up external_forcing.F and external_forcing_surf.F
2987      - can now be used by both OCEANIC and OCEANICP
2988    checkpoint46h_pre
2989    
2990     Added code to convert surface volume flux (fresh water) into
2991     a mass flux when using P coordinates in the ocean (OCEANICP).
2992     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2993    
2994    checkpoint46g_post
2995    o Include a new diagnostic variable phiHydLow for the ocean model
2996      - in z-coordinates, it is the bottom pressure anomaly
2997      - in p-coordinates, it is the sea surface elevation
2998      - in both cases, these variable have global drift, reflecting the mass
2999        drift in z-coordinates and the volume drift in p-coordinates
3000      - included time averaging for phiHydLow, be aware of the drift!
3001    o depth-dependent computation of Bo_surf for pressure coordinates
3002      in the ocean (buoyancyRelation='OCEANICP')
3003      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3004        Theta, Salinity, and Pressure in the parameter list. This routine is
3005        presently contained in find_rho.F. This routine does not give the
3006        correct density for 'POLY3', which would be a z-dependent reference
3007        density.
3008    o cleaned up find_rho
3009      - removed obsolete 'eqn' from the parameter list.
3010    o added two new verification experiments: gop and goz
3011      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3012    checkpoint46g_pre
3013    
3014    checkpoint46f_post
3015    o Enable tangent linear (forward mode) gradient checks:
3016      - extended active file handling to g_... files
3017      - added TANGENT_SIMULATION to theSimulationMode
3018      - extended grdchk package accordingly
3019    o added tangent linear setup in verification/carbon/code_ftl
3020    o added adjoint setup in verification/front_relax/code_ad
3021    
3022    checkpoint46e_post
3023    o Added new equation of state -> MDJWF
3024      - EOS of McDougall et al., 2002, JAOT, submitted
3025      - caveat: the equation of state is only valid for a smaller (more
3026        realistic?) range of values than JMD95P/Z and UNESCO
3027      - added masks to the calculation of pressure in store_pressure
3028      - added more check values for density in check_eos (ini_eos.F), some of
3029        the old check values are out of the range of the MDJWF-eos, so don't
3030        expect perfect matches for those
3031    checkpoint46e_pre
3032    
3033    checkpoint46d_post
3034    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3035      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3036      case of pressure coordinates. eosType='JMD95Z' in
3037      combination with buoyancyRelation='OCEANICP' now causes an error.
3038    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3039      in find_alpha/beta.
3040    checkpoint46d_pre
3041    
3042    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3043      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3044    
3045    checkpoint46c_post
3046    o Changes necessary for ocean in p-coordinates
3047     -  Added new buoyancy relation = 'OCEANICP'
3048     -  Added new parameters = gravitySign (this used to be contained inside
3049        the factor dRdZ which I added when we first switched to R coordinates).
3050     X GM/Redi is not compatible (yet)
3051     X bottom drag and no-slip need to be debugged.
3052    checkpoint46c_pre
3053    
3054    checkpoint46b_post
3055    o Added new equation of state -> JMD95Z and JMD95P
3056      - EOS of Jackett and McDougall, 1995, JAOT
3057      - moved all EOS parameters into EOS.h
3058      - new routines ini_eos.F, store_pressure.F
3059    o Added UNESCO EOS, but not recommended because it requires
3060      in-situ temperature (see JMD95)
3061    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3062      unesco.f to be used with POLY3
3063    checkpoint46b_pre
3064    
3065    checkpoint46a_post
3066    o Added (atmospheric) pressure loading
3067      - new field in FFIELDS.h, etc...
3068      - new cpp flag ATMOSPHERIC_LOADING
3069    o Changed hFacC to _hFacC in calc_phi_hyd.F
3070    o Added SHORTWAVE_HEATING to some files for consistency
3071    checkpoint46a_pre
3072    
3073    checkpoint46
3074    further merges from release1_p5
3075    o new ctrl package
3076      - adopted from ECCO environment to enable optimization
3077      - added Eliassen Palm fluxes to controls
3078    o added Eliassen Palm flux controls to gradient check package
3079    o cost package
3080      - Compatible with new ctrl package
3081      - added Eliassen Palm cost hooks
3082      - modif's of existing cost functions
3083    o Adjoint-related bug fixes in kpp:
3084      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3085      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3086    o autodiff package
3087      - flow directives:
3088        + new for S/R do_the_model_io
3089        + enhanced for S/R checkpoint
3090        + new gmredi.flow
3091      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3092        disable adcommon.h/g_common.h by default.
3093      - fixed problem for adjoint of global_max
3094    o modified verification/carbon/
3095    o New setup for adjoint of global_ocean
3096    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3097    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3098    o incorporated hooks for sponge layer code (external_forcing.F)
3099    
3100    checkpoint45d_post
3101    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3102    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3103      (affects plume_on_slope "cg2d" output)
3104    o add new parameter deltaTfreesurf for free-surface time stepping
3105    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3106    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3107    o change phiMin in exp1 (to agree with documentation)
3108    o add new flags:
3109     - T,S forcing inside/outside Adams-Bashforth
3110     - turn off temp,salt advection and/or forcing
3111     - for each tracer, define internal flag for multiDimAdvection & A-B
3112    o monitor: change definition of KE to check conservation of Energy
3113    
3114    checkpoint45c_post
3115    o Removed f90 comments ("!")
3116    o Modified initialisations to enable exf package for MITgcm
3117      (without invoking ECCO_PACKAGE).
3118    o modifications to gradient check package (Martin Losch)
3119      - enable centered differences
3120      - modified format of standard output
3121    
3122    checkpoint45b_post
3123    o cleaned exchange calls in cg2d
3124    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3125    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3126      to configure barotropic setup (Martin Losch)
3127    o moved some initialisations within bi,bj loop in dynamics
3128      (TAF flow dependency)
3129    o in initialise_varia, moved call packages_init_variables
3130      before convective_adjustment_init
3131      (corresponding adjustment of TAF tape initialisation).
3132    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3133    
3134    checkpoint45a_post
3135    o compute Rho over the whole domain (extend iMin,jMin indices)
3136    o specific exchange for X-slice domain (case Ny=1)
3137    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3138    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3139    
3140    checkpoint44h_post = checkpoint45
3141    o Fix to restore differentiability:
3142      place at which packages_init_variables is called in
3143      initialise_varia is crucial for reverse control flow.
3144    o modifications in GMRedi to enable stable adjoint
3145      (corresponding modif's in thermodynamics, dynamics)
3146    o added missing hook for sponge layer code in external_forcing
3147    o modified test cost functions
3148    o storing in gad_advection (plus removal of write(0,*)!
3149    o missing headers TR1.h added in convective_adjustment routines
3150    o errorMessageUnit set non-equal zero in eeboot
3151      (conflict on some platforms, e.g. IBM SP3)
3152    o modified carbon verif.
3153    
3154    checkpoint44h_pre
3155    o vertical grid option: allow to put the Interface at the middle between
3156      2 cell-centers ; replace delZ in pkg/kpp by drF.
3157    o GM Advective form: Tracers are advected using the residual transport (=
3158      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3159    
3160    checkpoint44g_post
3161    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3162      results) ; ifdef missing in thermodynamics.F
3163    
3164    checkpoint44f_pre,checkpoint44f_post
3165    o added PTRACERS package
3166      This allows an arbitrary number of passive tracers to be integrated
3167      forward simultaneously with the dynamicaly model.
3168      + Implemented so far:
3169        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3170        - I/O and checkpointing
3171        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3172      + Not implemented so far:
3173        - KPP
3174        - OBCS
3175      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3176        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3177        line in data.pkg.
3178      + This package is disabled by default since it increases storage.
3179    
3180    
3181    o testscript: added -cleanup option
3182    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3183                 b) enable to filter 2D fields.
3184    
3185    checkpoint44e_pre,post
3186    o re-wrote convective adjustment to use pre-calculated weights
3187      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3188      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3189      Original calls to convect() still in place.
3190    
3191    chkpt44d_pre,post
3192    o added missing EXCLUDE_MONITOR flags
3193    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3194      (incompatible typ in MIN/MAX expressions caused problems
3195      on IBM SP3)
3196    o in genmake added variable MAKEDEPEND
3197      plus resetting for case SunOS
3198    o added timer_stats.c routine for IBM SP3
3199    o removed variables in dynamics
3200    !!! I forgot to create tag chkpt44d_pre !!!
3201    !!! But chkpt44d_pre = chkpt44c_post    !!!
3202    
3203    o real fresh water flux implemented with non-linear free-surface.
3204    
3205    chkpt44c_pre,post
3206    o few fix (mask in shap_s2, EmPmR in external_field_load,
3207      USE_NATURAL_BCS in solve_for_P);
3208    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3209    
3210    checkpoint44b_pre/_post
3211    o merge of relevant stuff from the ecco-branch:
3212      - genmake: removed $S64 overwrite for case SunOS
3213      - pkg/exf: update and corrections for field swapping and obcs
3214      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3215                  harmonized between ECCO and MITgcm
3216      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3217                      updated checkpointing_lev... lists for obcs
3218      - model/src: minor changes in forward_step, plot_field
3219                   added directive for divided adjoint in the_main_loop
3220      - pkg/mdsio: added mdsio_gl_slice
3221    
3222    o check parameters & config (chkpt44a_pre,post)
3223    o OBC and NonLin_FrSurf.
3224    
3225    checkpoint44
3226    o fix bug in mom_vi_del2uv
3227    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3228    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3229    o update AIM experiments (NCEP input files)
3230    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3231    o added some stuff for AD
3232    
3233    checkpoint43
3234    o added two new advection tests
3235    o added global 4x4 degree ocean test
3236    o added test of H&S94 with free surface on cube
3237    o some final mods for gradient check, adjoint,...
3238    
3239    checkpoint42
3240      Fixed AD-related problems:
3241    o Store directives up-to-date with re-arranged Adams-Bashforth
3242      (mainly thermodynamics.F)
3243    o New store directives for multi-dim. advection schemes
3244      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3245      * new common block and key passkey
3246      (mainly gad_advection.F)
3247    o Modified store directives for split of dynamics/thermodynamics
3248      for the case ALLOW_KPP
3249    o Cleaned argument list for timestep_tracer.F
3250    
3251    checkpoint41
3252    o re-formatted/added comments in prologues of key subroutines
3253      to work with protex
3254    
3255    checkpoint40
3256    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3257    o added FLT (floats) package from Arne along with demo. experiment
3258    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3259      implementation of forward-in-time forcing terms
3260    o more mods for non-linear free-surface including new variable
3261    o modified multi-dim method to work on cube
3262    o bug fix in KPP (from DM)
3263    
3264    checkpoint40pre9
3265    o added DST advection schemes
3266    o fix MPI bug on SGI's
3267    o modifications for non-linear free-surface
3268    o fixed conditionals for fixed flow/passive tracer only mode
3269    o added tension/strain form of stress tensor
3270    o changes to commenting of arguments for TAF/TAMC
3271    o added/updated many matlab scripts
3272    o added multi-dimensional advection method for tracers
3273      
3274    checkpoint40pre8
3275    o new package rw/
3276      Added method for dumping intermediate local arrays:
3277      mdsio_writetile - same as mdsio_writefield except works from inside
3278                        bi,bj loop
3279      mdsio_writelocal - same as mdsio_writetile except works for local
3280                         arrays
3281      write_local_r? - higher-level wrapper for mdsio_writelocal
3282      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3283      Example given at end of mom_vecinv.F that dumps some local arrays.
3284    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3285      control flux-form versus vector invariant code.
3286      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3287      or genmake -DISABLE ...
3288    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3289      (additional storing is now needed for case vecinv;
3290      currently nothing implemented to switch this storing off
3291      in case fluxform is used since no CPP flag available).
3292    
3293    checkpoint40pre7
3294    o bug fix in dynamics.F
3295      calc_viscosity called before k=1,Nr loop.
3296    o added some #ifdef's ALLOW_PASSIVE_TRACER
3297    o cleaned initialisations in ctrl_map_ini
3298      related to TAF
3299    
3300    checkpoint40pre6
3301    o split dynamics into thermodynamics & dynamics
3302    o corresponding split of calc_diffusivity into
3303      calc_diffusivity, calc_viscosity
3304      (kpp_calc_diff, kpp_calc_visc).
3305    o Added diffkr, kapgm to control variables
3306    o bug fix in gmredi_slope_limit for ldd97
3307    
3308    checkpoint40pre5
3309    o proper initialization of Adams-Bashforth time stepping
3310      + uses forward step for very first step of model (iter=0)
3311    o re-generated *all* output since almost all output is modified by this
3312      change (sorry but we've been putting this one off for about 2 years)
3313      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3314        *not* regenerated since they are already out of date and I don't
3315        want to create the impression that they are suddenly working.
3316    o removed KAP stuff for DEC's
3317    o modified/added many .cvsignore files in */code and */input
3318    o added new expt "solid-body.cs-32x32x1"
3319      + this uses an alternative form of ini_curvilinear_grid.F which
3320        is not necessarily any better than the current one...
3321    
3322    checkpoint40pre4
3323    o added re-initialisations of utrans,vtrans,rtrans in
3324      calc_common_factors which are crucial for TAF.
3325    o extended iMin,jMin range for calc_common_factors,
3326      calc_diffusivity
3327    o added option ALLOW_PASSIVE_TRACER
3328    o a few minor updates and fixes
3329    
3330    checkpoint40pre3
3331    o created calc_gtr1.F for gad package
3332    o split the_main_loop and re-introduced forward_step
3333    o some recomputations of nIter0 for TAMC
3334    
3335    checkpoint40pre2
3336    o Updated to latest branch of AJA, JMC
3337    o Added gradient check package
3338    o Added routines for passive tracer handling
3339    o Added carbon sequestration sensitivity experiment
3340    
3341    checkpoint39
3342     o Modifications and fixes to support TAMC
3343       (mainly missing or wrong directives)
3344     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3345       in addummy_in_stepping
3346     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3347     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3348     o Included following packages:
3349       cal: calendar
3350       exf: external forcing
3351       ecco: essential routines to control use of cal, exf
3352             (NB: this is not the full ECCO environment)
3353     o disabled some packages by default in genmake
3354    
3355    checkpoint38
3356     o see notes_c37_adj.txt
3357     o corrected wrong layer index in external_forcing_t
3358     o replaced the_main_loop/forward_step by the_main_loop
3359     o removed forceoutput from write_state
3360       (replaced criteria for initial/final state)
3361     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3362    
3363    checkpoint37
3364     o mdsio.F routine split and packaged in pkg/mdsio
3365       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3366        used unless genmake -disable=mdsio)
3367     o allow a more precise surface-geopotential gradient for the atmosphere
3368       taking into account the change in space of Alpha (=1/rho) at the surface.
3369     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3370       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3371     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3372       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3373       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3374     o Time-Average diagnostics defined as a pseudo package "timeave".
3375     o pickup files : old pickup (before c35) did not work with new code (c35
3376       and after) unless activating 2 commented lines in initialise-varia.
3377     o Non-Hydrostatic pickup file Pb fixed.
3378     o bug with Rigid-lid version (since c35) fixed.  
3379    
3380    checkpoint36
3381     o implement Crank-Nickelson barotropic time-stepping
3382     o recover Time-Average diagnostics
3383     o fix Pb in checkpoint (PR#19)
3384     o AIM become a standard package ; clean unused CPP_kees
3385    
3386    checkpoint35
3387     o subtantial rewrite of dynamics.f
3388     o allows staggered time-stepping
3389     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3390     o added bottom drag (linear + quadratic)
3391    
3392    checkpoint34
3393     o Modified exchange routines for correct reverse simulation.
3394     o Added verification output to comply with bug fix in impldiff.F
3395       as of c33 (exp2, natl_box).
3396     o Corrected store directives in dynamics.F
3397     o Corrected array boundaries in impldiff.F
3398     o Corrected array dimensions in gmredi.
3399       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3400     o Added routine GLOBAL_SUM_INT to global_sum.F
3401     o Added mdsio_gl.F for ECCO purposes.
3402    
3403  checkpoint33  checkpoint33
3404   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3405   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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