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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.875 by dimitri, Mon Sep 17 23:03:08 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
8      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
9      without requiring DO-IF statements
10    
11    checkpoint59g
12    o adjoint testing: in preparation for changing testreport:
13      - output format: cost and grad written on separated lines
14      - ad output results in directory "results" (instead of "results_ad")
15    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
16    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
17    o pkg/ecco: allow user defined cost function contributions
18    o testreport:
19      Allow to choose (per experiment) the list of tested output variables
20       and the main variable (used to issue a pass/FAIL ) ;
21      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
22      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
23      Also modify printing of summary:
24       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
25       b) echo the list of tested variables in the individual summary.txt of
26          each experiment.
27    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
28      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
29      (but still depend on the tile decompostion of the domain).
30    o pkg/seaice: change a discretization detail to make the B-grid code
31      "more symmetric". This change is likely to remove all "ridges/leads" that
32      where quasi-aligned with the grid in B-grid solutions. It may also be
33      the solution to the stress coupling issues with the B-grid.
34    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
35      remove .cvsignore from input dir. (since testreport no longer run here).
36    o pkg/thsice:
37     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
38     - fix reshaping of sea-ice just after advection:
39       melt all the ice only if ice-volume is too small.
40     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
41       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
42     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
43    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
44      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
45    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
46      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
47      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
48      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
49      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
50      -> update output.txt
51    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
52     this affects truncation error: -> update output.txt of exp:
53      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
54      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
55    
56    checkpoint59f
57    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
58    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
59      a bounded range (in forward mode)
60    o pkg/ecco, ctrl, autodiff and mom_common:
61     internal parameter controls, completements of implementations
62    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
63    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
64      (not seem any difference in testing results).
65    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
66       at face corners.
67    o pkg/generic_advdiff:
68     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
69      loop range indices for computing vertical advection tendency
70      and do the calculation in the interior only (no overlap) ;
71      for now, only implemented for SOM advection (to save CPU time).
72     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
73    o exch2 adjoint
74      First set of changes:
75      - add exch2 hand-written adjoint templates
76      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
77        This will require cleanup in pkg/autodiff/*.F
78        (changed routines currently kept separate in verif. code/)
79      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
80        that used to hide exch2 or cubed-sphere specific code
81        (commented via 'cph-exch2')
82    o pkg/seaice
83      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
84    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
85       output of global_ocean.cs32x15.thsice .
86    
87    checkpoint59e
88    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
89      for B-grid vector (not yet tested) and C-grid vector (<- only used
90      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
91    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
92      (#ifdef ALLOW_SALT_PLUME)
93    o gather_2d/scatter_2d: removed halo regions
94    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
95      scheme and the corresponding test case (under front_relax dir). For now,
96      only available with Skew-flux form and not yet tested in realistic set-up.
97      adjoint: store directives updated, but gradient checks deteriorated,
98      so maybe GM/Redi adjoint is now broken.
99    o seaice adjoint
100      * add AREA, HEFF, HSNOW as control variable
101        (should not change lab_sea results)
102      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
103    o pkg/seaice:
104      * added computation of saltFlux in seaice_growth;
105        For time being, sea ice salinity is assumed constant
106        contribution of snow flooding to freshening of sea ice is neglected.
107        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
108        defaults to 0.0 in order to maintain backward compatibility.
109        Typical values for SEAICE_salinity are 4 to 10 g/kg.
110      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
111      * added SEAICE_availHeatFrac, which specifies fraction of surface level
112        heat content used to melt or grow ice
113      * commented out cap of HICE: it helps keep ice thinner
114      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
115      * applied OBCS T/S mask to HEFFM sea ice mask
116    
117    checkpoint59d
118    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
119     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
120     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
121    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
122     and change default value of parameter "GM_Small_Number";
123     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
124       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
125       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
126    o pkg/ecco: cost function when applying pkg/smooth to controls
127    o pkg/ctrl: add forcingPrecond run time parameter
128    o pkg/seaice:
129     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
130     - fix bug in metric terms of u-equation in LSR solver (implicit part),
131       changes verification/lab_sea
132     - rearrange implicit part of u-equation in LSR solver to make it easier to
133       read, understand, and debug. This causes changes at the truncation level.
134     - fix (serious) bug in the boundary conditions (sign error in the implicit
135       part) of the LSR solver. Changes all LSR results.
136     - fixed problem with HSNOW initialization to avoid thick snow when AREA
137       is initilized with small values - does not change lab_sea results.
138     - added HsnowFile initialization capability
139    o pkg/smooth: addition to model/src and pkg/ctrl so allow
140     initialization of pkg/smooth and application to control vector
141    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
142    o dependencies: pkg/profiles requires pkg/cal
143    o pkg/profiles:
144     - added option ALLOW_PROFILES_GENERICGRID
145         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
146         that interpolation information (grid points and coefficients) is provided
147         within the netcdf input files.
148         -> sample matlab scripts can be found in MITgcm_contrib/gael
149         that allow you to prepare netcdf input files.
150     - also modified: cleaner include statements, cleaner error print statements,
151       cleaner stops when error, and more tests of the netcdf input files consistency.
152    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
153    o pkg/seaice:
154     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
155       requires a new routine: seaice_diagnostics_fill.F
156     - make sure that seaice does not move if not forced (pressure replacement
157       method, Hibler and Ip, 1995), changes results
158     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
159     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
160       It is turned off by default (=-1.), because it changes the results.
161     - make it possible to read AREA from a file, too.
162    
163    checkpoint59c
164    o add S/R and diagnostics for oceanic mixed-layer depth
165    o move GMRedi call after all vertical mixing schemes (including KPP)
166    o pkg/thsice:
167     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
168      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
169    o pkg/obcs:
170     - bug fix for balance code
171    o pkg/seaice:
172      - allow values of SEAICE_elasticParm > 1
173      - add new parameter SEAICE_evpTauRelax as an alternative
174        to SEAICE_elasticParm
175      - make lsr boundary conditions free slip (by default), changes result
176      - add code for no slip boundary conditions for lsr
177      - set minimum of zeta to zero (and not 4e8) (changes results)
178      - add a cap on AREA after advecting AREA if seaice_growth is not called
179    o change calculation of Visbeck K:
180      - no longer depend on tapering scheme; instead, compute slope (limited
181        by GM_maxSlope). this is equivalent to what was comuted before with
182        clipping or linear tappering.
183      - fix vertical averaging (wrong by 1/2 level)
184      - leave the old version (but will not be maintained) within
185        #ifdef OLD_VISBECK_CALC / #endif
186      - update output of exp. ideal_2D_oce
187    o change error catch in calc_r_star to improve vectorization
188    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
189      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
190    o adjoint:
191      Re-organized adjoint checkpointing according to Matt Mazloff
192      (but with modifs/completions/cleanups)
193      Storing is now bundled into large arrays to optimized I/O
194      (and second step in cleanup of the_main_loop)
195    
196    checkpoint59b
197    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
198      - export/import (between ocean & coupler) fields needed for ocean DIC.
199    o pkg/seaice:
200      - get rid of three more exchanges seaice_calc_viscosities (required
201        different loop boundaries in seaice_lsr and seaice_ocean_stress)
202      - bug fix in seaice_ocean_stress (update of lab_sea required)
203      - reduce loop boundaries to necessary minimum also in seaice_evp
204      - go back to the old way of computing deltaC/Z as the adjoint likes that
205        better
206    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
207      passive tracer to an Age Tracer) + update output.txt
208    o pkg/exf:
209      - implement A-grid / C-grid selection for wind-stress input files.
210      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
211      for now, in exf_bulk_largeyeager04.F only :
212      - change implementation for case where windspeed + 2. components wind-stress
213        are read-in. AND use rhoConstFresh to convert evap.
214    o pkg/seaice:
215      - use correct EXCH_UV for wind-forcing (on A-grid).
216      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
217        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
218    o pkg/exf:
219      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
220      EXF_INTERPOLATION:
221      - merge global_with_exf/code version of exf_interp_read.F
222        to the main code ;
223      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
224        reading the file ; Important: This options needs to be defined to recover
225        previous code.
226        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
227      - no longer loose real*8 precision along the way when using exf_iprec=64.
228    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
229      - change discretisation of evp-solver in order to avoid another exchange
230        (changes lab_sea) and clean up a little
231      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
232        help the adjoint (this also changes the results slightly)
233      - add a few "_d 0" where they had been missing in seaice_evp.F
234      - cleaning up: remove unused seaice_calc_rhs.F
235    o pkg/exf: some cleaning-up:
236      - change various "constants" into runtime parameters
237      - cleaned-up Large&Yeager04 routine which should eventually
238        replace exf_bulkformulae.F (changed names of S/R and CPP)
239        and merged various ALLOW_ATM_WIND options
240     only used with thsice pkg (in thsice_get_exf.F):
241      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
242        which are used when useStabilityFct_overIce=TRUE (= the default)
243      - change default values of ice & snow emissivity and scale downward LW
244        by ice & snow emissivity.
245    o pkg/thsice:
246     fix few little problems, in thsice_calc_thickn.F:
247      - growth vertically (and not laterally) if iceFrac == iceMaskMax
248      - melt only laterally if hIce < hThinIce (as the comments say)
249      and in thsice_extend.F:
250      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
251      - start to form ice as soon as the minimum ice-volume is reachable.
252     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
253      and cpl_aim+ocn
254    o pkg/kpp
255     - move computation of surface related input fields to KPP into a new
256       subroutine kpp_forcing_surf.F
257     - remove wrong (within bi,bj loops) EXCH calls.
258     - little cleaning (add argument myThid in last position, cvs header ...)
259     - for now, fix conservation problem by exchanging KPPviscAz (may not
260       be the best fix)
261    o pkg/seaice
262     - check for inconsistent evp parameter/cpp-flag combination
263     - remove leftover errIO flat for obsolete name list error handling
264    o OpenAD
265     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
266    
267    checkpoint59a
268    o pkg/seaice: some parameter clarifications and a little bit of clean up
269    o pkg/thsice: rename run-time parameters:
270       himin       -> hIceMin
271       himin0      -> hThinIce
272       hihig       -> hThickIce
273       i0          -> i0swFrac
274       transCoef   -> bMeltCoef
275       frac_energy -> fracMelting
276      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
277       with default values (for now) that do not change the results.
278      remove old version of thsice vars advection in pkg/seaice.
279    o in FFIELDS.h:
280      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
281      - make pLoad & sIceLoad always available (but still only used if
282         ATMOSPHERIC_LOADING is #define).
283    o pkg/kpp: replaced _KPP_RL with _RL
284    o bug fixes for vertical diffusivity computations when both KPP and
285        3D diffusivity arrays are used.
286    o pkg/seaice: fix bug in evp solver, while doing that
287      - change (improve?) discretization of stress computations for both
288        cgrid-lsr and evp solver
289      - add a new routine to compute strain rates
290      - the above changes lab_sea results
291      - add no slip conditions for evp solver (off by default), lsr-version
292        may follow
293      - fix exchange for shear at Z-points (does not change lab_sea)
294      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
295        (to force the user to pick a time step since there is not "safe" way
296        of choosing it)
297      - add principal stress diagnostics
298      - rearrange fields for evp a little to avoid having to call a: too many
299        exchanges and b: exchanges for stress trensor components which we do
300        not have.
301      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
302        of evp, complete rewrite for lsr case (latter is does not yet work
303        in all cases)
304    o pkg/kpp: add code to have mixing in shelf ice caverns
305      - add myThid to all kpp routines (long overdue)
306    
307    checkpoint59
308    o pkg/exf:
309      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
310        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
311      - move exf header files from lower_case.h to UPPER_CASE.h ;
312        add missing cvs Header & Name
313      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
314      - add namelist param. selectStressGridPosition, exf_monFreq
315      - retire many _CLIM routines, and remove data.exf_clim
316        + params moved to data.exf
317        + climsst, climsss now handled by exf_set_gen, i.e.
318          climss?period=0 refers to constant field,
319          climss?period=-12 to monthly forcing
320      - split up namelists in data.exf
321    o pkg/seaice:
322      - remove seaice_exch and seaice_exch_uv
323      - remove superfluous exchange of theta
324      - add myThid to seaice_budget_ocean/ice
325      - add new interface for atmospheric wind forcing (C-grid only)
326        + new routine
327        + two new field (taux, tauy for stress over ice)
328        + removed one global field (DAIRN) for C-grid case only
329    o pkg/thsise
330      - 2nd set of modifs for thsice adjoint in conjunction with exf
331    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
332    
333    checkpoint58y_post
334    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
335      vertical diffusivity, similar to that in MOM4; turned on using
336      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
337      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
338    o Added capability for 3D specification of background vertical diffusion
339      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
340      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
341      "data" file that contains the 3D vertical diffusivity coefficients.
342    o ice dynamics (pkg/seaice) with thsice thermodynamics:
343      - add code within pkg thsice to advect & diffuse sea-ice fields
344      similar to (and will replace) what has been added in  seaice_advdiff.F,
345      but: - conserving Mass, Heat & Salt.
346           - better when using non-linear advection scheme (not yet fully tested)
347           - can also be used in atmospheric set-up (for now, only the diffusion).
348    
349    checkpoint58x_post
350    o IO option for global-file compact format:
351      - add options when generating topology (utils/exch2/matlab-topology-generator)
352      - add I/O capability (pkg/mdsio).
353      - adapt utils/matlab/rdmds.m to read this format.
354      for now long-line format not yet supported by pkg/mdsio (& exch2).
355    o shelfice: add a few diagnostics
356    
357    checkpoint58w_post
358    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
359      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
360      (and replace horiVertRatio in NH code).
361      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
362                         and tutorial_plume_on_slope (sensitive to truncation)
363    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
364      directly to drive seaice model (C-grid only)
365    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
366     - reintroduce computation of wind from stress,
367     - compute tau (in exf_bulkformulae.F) from windstress averaged to
368       mass points to avoid tau = 0
369     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
370    o rdmnc.m: make it work with "global" files created with gluemnc
371    o rdmnc.m : some improvements in dealing with singleton dimension
372      (tested on all testreport mnc output files).
373    o genmake2: disable pkg/profiles if netcdf test fails.
374    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
375    o move call to cal_readparms up to make calendar parameters/variable available
376      to all packages
377    
378    checkpoint58v_post
379    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
380      useDynP_inEos_Zc tested.
381    o pkg/exf: changes to properly interpolate/mask/scale initial fields
382    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
383      and portions thereof.  See read_cs.txt for description and examples.
384    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
385      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
386      following the great-circle arc between those 2 points.
387    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
388      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
389    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
390     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
391     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
392     - still needs work (not working with some options ; efficiency to improve)
393       and serious testing.
394     - use this scheme for temperature & salinity in 2 advection test exp.:
395       advect_xy & advect_xz, respectively.
396    
397    checkpoint58u_post
398    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
399    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
400    o testreport: add option "-skipdir" to skip some test.
401    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
402      momentum calculation.
403    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
404    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
405      remove checkpoint.F and the_correction_step.F (no longer used);
406      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
407    o add option (linFSConserveTr) to correct for tracer source/sink due to
408      Linear Free surface
409    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
410    o pkg/thsice: fix reading mnc-pickups
411    
412    checkpoint58t_post
413    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
414    o pkg/mdsio:
415     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
416       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
417       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
418     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
419     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
420       either MDS_READ_FIELD or MDS_WRITE_FIELD )
421     - new S/R (to replace MDSWRITEMETA), which allows to write more
422       informations (variable names, time ...) to meta files.
423     - modify rdmds.m to give back the meta file content.
424    o pkg/diagnostics: change vertical interpolation to be safer, and more
425       flexible (define p-levels to interpolate to in data.diagnostics);
426      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
427       diagnostic pointer.
428    o pkg/seaice: more cleaning up of seaice_growth, added many comments
429    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
430    o fix multi-category seaice:
431     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
432       SEAICE_MULTICATEGORY
433     - fix short wave heat flux
434    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
435       and allow to use EVP solver. Change forward lab_sea: test both EVP
436       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
437    o Initial check-in of lab_sea adjoint
438      (very similar to natl_box_adjoint/code_seaice)
439      * used C-grid and EVP solver
440      * used KPP, GM/Redi
441      * uses inAdExact=.TRUE.
442      * gradient checks fail for both ADM and TLM
443        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
444        f.d. gradients actually seem more problematic than ADM, TLM gradients;
445        issue is related to forward mismatch between g77 an ifort
446    o pkg/seaice: overhaul of thermodynamics
447     - growth.F and groatb.F are replaced by new routine seaice_growth.F
448     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
449     - move a few global fields out of SEAICE.h into seaice_growth.F and
450       make them 2D (FICE/QNETO/ ...)
451     - remove FO (it is the same as QNETO)
452     - introduce a few local fields to avoid modifying external fields such
453       as atemp, etc.
454    
455    checkpoint58s_post
456    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
457      changed exf_set_gen.F so that
458        genperiod=0 means input file is one time-constant field and
459        genperiod=-12 means input file contains 12 monthly means
460    o CG2D: use pre-computed solver main-diagonal (stored in common block);
461      this affects truncation error ; generate new output file for exp. which
462      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
463        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
464        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
465        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
466        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
467        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
468    o start implementation of deep-atmosphere and anelastic formulation
469    o verification: remove 2nd copy of input files and use script "prepare_run"
470      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
471    o mom_common/vecinv/fluxform: fix a few initialisation isssues
472    o profiles: fix for multithreaded case
473    
474    o diagnostics: rename few diags:
475      s/'PRESSURE'/'RCENTER '/g
476      s/'TICE    '/'oceFreez'/g
477      s/'TAUX    '/'oceTAUX '/g
478      s/'TAUY    '/'oceTAUY '/g
479      s/'SWFLUX  '/'oceQsw  '/g
480      s/DIFx/DFxE/g
481      s/DIFy/DFyE/g
482      and add few ocean-forcing diagnostics:
483      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
484    o modifications to pkg/seaice/growth.F and budget.F, which change results of
485      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
486      as actual snow thickness.  It now refers everywhere to effective snow
487      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
488    
489    checkpoint58r_post
490    o modifications to pkg/seaice/growth.F, which change results of
491      lab_sea experiment: fixes pertain to melting snow over open water, to
492      masking EVAP under sea ice, and to using the correct AREA variable for
493      computations of EVAP, PRECIP, HSNOW, and GHEFF
494    o add ability to read bathy, salt, and theta using MNC (off by def)
495    o add flooding algorithm and advection of HSNOW for pkg/seaice;
496      both are turned off by default and do no change any results
497    o seaice advection with pkg/thsice: a step toward the use of non-linear
498      advection scheme, but #ifdef or commented out for now (requires more EXCH).
499    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
500      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
501      in natl_box (affects results @ truncation level: update output.txt)
502    o multi-threading and IO:
503      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
504      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
505        (needed to work with SingleCpuIO): tested in all verif. exp.
506    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
507      affects the results (but none of the verification test uses this scheme).
508    o Adding some pkg/diagnostics capability to pkg/seaice
509      (will certainly be subject to changes)
510    o ctrl: adding new control variables:
511      lwflux, lwdown, evap, snowprecip, apressure, runoff
512    
513    checkpoint58q_post
514    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
515      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
516      high_res_cube configuration by 4% on Columbia.
517    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
518      add (in global_with_exf/code) a version of EXF_INTERP_READ without
519      dynamical allocation (seems to work in multi-threaded).
520    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
521      single CPU io) so that TAF does not have to see EESUPPORT.h
522    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
523    
524    checkpoint58p_post
525    o obcs: stop if obcs is used with useCDscheme = .true.
526    o shelfice:
527     - fix a sign error so that no slip at shelfice interface works
528     - remove stop for combination non-hydrostatic code and shelfice. That does
529       not mean, that the results are correct, but at least they are numerically
530       stable
531    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
532    o added adjoint exch routined for all exch*3d* routines
533      and updated flow directives
534    
535    checkpoint58o_post
536    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
537      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
538    o change controling S/R for writing pickup file (new S/R do_write_pickup)
539      and clean-up reading/writing of pickup files.
540    o fix local version of read/write pickup (NH part) in rotating_tank/code
541    o simplify EXCH interface:
542     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
543     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
544    o added the regrid package
545    o shelfice:
546     - add a simple boundary layer scheme to reduce noise
547     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
548    
549    checkpoint58n_post
550    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
551       local variable (not in common block).
552    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
553      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
554      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
555        to work with SingleCpuIO.
556    o add "_d 0" to real constant of pkg/cfc subroutines ;
557       update exp. cfc_exemple & tutorial_cfc_offline output files.
558    o multi-threading and IO:
559      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
560        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
561      - barrier before and after reading.
562      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
563      - avoid using MDS_WRITELOCAL for LAND pkg output.
564      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
565        common-block variables ; Allows multi-threading with master-thread IO.
566    o change default MAX_NO_THREADS from 32 to 4 ;
567      and stop cleanly when MAX_NO_THREADS is too small.
568    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
569    
570    checkpoint58m_post
571    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
572       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
573    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
574       keep global_ocean.90x40x15 (for AD testing) with former secondary test
575       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
576    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
577        add MITgcm_tutorials (= code + all the tutorials)
578    o ecco, option to compute cost for total ssh (mean+anom)
579    o consistent with addition of ptracer and ssh in pkg/profiles
580    o profiles: adding ptracer and ssh
581    o testreport: change multi-test output-file name
582      (from output.txt.{name} to output.{name}.txt)
583    o profiles: now ok for mutli-tiles case
584    o seaice: add 4 parameters for different advection schemes for area,
585      (effective) seaice thickness, enthalphy, and snow height. Their default
586      is the standard parameter SEAICEadvScheme
587    o calc_gw:
588     - add cosFacU in zonal viscous flux (harmonic.visc.).
589     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
590       of tutorial_plume_on_slope.
591    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
592    o calc_gw: true flux-form, account for horizontal grid spacing.
593      update rotating_tank results, but not plume_on_slope (affected at
594      truncation level, 11 digits).
595    
596    checkpoint58l_post
597    o calc_gw:
598     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
599     - remove side-drag for now (need to fix it); update plume_on_slope results.
600     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
601    o commit code to make SST/SSS weights spatially variable
602      (based on either variable in-situ or variable initial T/S weights)
603    o pkg/ecco:
604      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
605        now based on horizontally varying weights wthetaLev, wsaltLev
606      * cost_averagesflags now returns year indices in addition to day, month
607      * sflux balance is performed on annual basis
608        (sflxumm, sfluxmm2, bal_sfluxmm)
609      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
610        including separate counting and multipliers
611    o pkg/rbcs
612      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
613    
614    checkpoint58k_post
615    o testreport:
616     - always build in dir. "build" (if not there, mkdir build instead of building
617       & running in input)
618     - run in dir run (if it exists), in build otherwise.
619     - call prepare_run (if input/prepare_run exists)
620     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
621    o pkg/exf modifications to interpolation and rotation routines for more
622       reasonable treatment of North Pole singularity: for tracers North Pole
623       value is set to northernmost zonal-mean value, for zonal velocity it is
624       set to zero, and for meridional velocity it is set to northernmost value.
625    o pkg/exf/exf_check_range.F
626     - add tile index to diagnostics and move stop statement to the very
627       end of the routine.
628    o pkg/diagnostics: (diagnostics_main_init.F)
629      define title of isomorphic variables according to the current config.
630    o pkg/thsice with pkg/seaice dynamics:
631    - fix domain of computation (interior only, required for exf) and do exchanges
632    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
633    o towards a standard way of dealing with multi-threading in MONITOR
634      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
635    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
636       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
637    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
638    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
639    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
640       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
641    o tracer advection:
642     - clean-up and simplify calc_common_factors.F
643     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
644       advection subroutine (but still not used within DST advection S/R)
645    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
646    
647    checkpoint58j_post
648    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
649      from file (collects calls previously in FORWARD_STEP)
650    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
651    o adjoint store dir. adjusted accordingly
652    o genmake2
653      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
654    
655    checkpoint58i_post
656    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
657      on wind stress (SEAICEstressFactor defaults to 1.)
658    o Total number of Timers is finite (<=40): comment out 2 non-essential one
659      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
660    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
661      on CS-grid: no longer loosing mass.
662    o exf & curvilinear-grid: no longer modify longitude xC & xG.
663    o pkg/ggl90: fix sloppy output and fix a bug
664    o pkg/seaice: added SEAICEuseEVPpickup parameter
665      - Set to false in order to start EVP solver with
666        non-EVP pickup files when using SEAICEuseEVP
667      - fix sign error in diffusion in seaice_calc_rhs
668    
669    checkpoint58h_post
670    * Modifications for bottom topography control
671      o replace hFacC by _hFacC at various places
672      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
673      o add non-self-adjoint cg2d_nsa
674      o update autodiff support routines
675      o re-initialise hfac after ctrl_depth_ini
676      o works for 5x5 box, doesnt work for global_ocean.90x40x15
677    * Adding verification for 5x5 box (4-layer) bottom topography control
678    
679    checkpoint58g_post
680    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
681       used for mean seasonal cycle, mean diurnal cycle); add an example
682       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
683    o pkg/ggl90:
684      - add parameter (minimum surface kinetic energy)
685      - fix bug (avoiding division by zero)
686    o couple pkg/thsice to pkg/seaice:
687      - modify advection in seaice to accomodate new scalar fields to be advected
688      - only muliDimAdection scheme work with seaice/thsice
689      - mapping of thsice-variables to seaice-variables, back and forth
690      - does not break the verification experiments, but does not give the
691        desired results either
692    o pkg/seaice
693      - make (default) second order advection a bit less confusing?
694    
695    checkpoint58f_post
696    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
697      to pkg/seaice):
698      - new routines thsice_map_exf and thsice_get_exf provide the interface
699      - add an additional formal parameter to thsice_solve4temp
700    o pkg/exf:
701      - add new fields wspeed, snowprecip (to be able to couple to thsice)
702      - correct Stefan-Boltzmann constant
703      - new parameter for longwave surface emittance
704      - separate some stuff from exf_bulkformulae into new routines  
705        exf_radiation, exf_wind
706      - add new parameters and constants: longwave emissivity for ocean, ice
707        and snow, evaporation parameters over ice
708      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
709        either wind from stress or stress from wind
710    o pkg/thSIce:
711    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
712    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
713       and THSICE_CALC_THICKN
714    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
715    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
716      to make debugging easier.
717    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
718    o pkg/bulk_force:
719      - clean-up comments and parameters ;
720      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
721    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
722      generate new output for test-experiment: aim.5l_cs.thSI
723    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
724      testreport accordingly
725    
726    checkpoint58e_post
727    o SEAICE_CGRID adjoint done
728    o R_STAR adjoint implemented.
729      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
730      * need to sort out init. of h0facc, etc.
731    o Make pkg/profile fully independent of ecco,cost, etc. stuff
732      to be able to use it in pure forward.
733    
734    checkpoint58d_post
735    o upgrade simple test-experiment to tutorial example:
736     step.1: duplicate the experiment and (step.2) will remove the old copy.
737      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
738      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
739      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
740      tutorial_global_oce_biogeo    <- copy of dic_example
741      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
742      tutorial_plume_on_slope       <- copy of plume_on_slope
743      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
744      tutorial_global_oce_optim     <- empty for now (David ?)
745      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
746     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
747    o correct a sign problem in cost_scat.F
748    o obcs and ptracers: fix boundary conditions for advections schemes
749      with larger stencil
750    o thsice adjoint: start
751    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
752      completeness
753    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
754      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
755    o ptracers adjoint:
756      * avoid extensive recomputatations
757      * fix missing re-init. of gptr (missed by TAF)
758    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
759      me to turn off the excessive output to STDOUT that this package produces
760    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
761      and add those terms in Vector-Invariant formulation.
762    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
763      if the control period (xx_hfluxperiod etc) is 0
764    o in profiles pkg, clean routines and fix details
765    o in ecco pkg, reading ssh data:
766      fix problem in case the model does not start at iter0=0
767    o fix mnc-pickup/restart for ptracers
768    o new package prifiles:
769      code to compute profile-based cost by Gael Forget
770      (modifs in ecco, ctrl, autodiff)
771    o Benign bug fix in initialization (spotted by M. Mazloff) of
772      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
773    
774    checkpoint58c_post
775    o adjoint: finish NLFS adjoint and provide reference output in
776      verification/global_ocean.90x40x15/results_ad_nlfs
777    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
778      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
779      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
780      with SEAICE_CGRID defined.
781    o move calendarDumps from "data" to "data.cal" and clean-up the code
782      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
783    o add useEXF & useCAL flags (for now, set in hard-coded way)
784    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
785      (were missing in NH mode, and wrong in quasihydrostatic mode).
786      waiting for Chris updated version of calc_gw to add those CALLs.
787    o fix bug in quasihydrostatic S/R ;
788      add a test for this option: global_ocean.90x40x15.qshyd
789    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
790      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
791    o add on/off flag useOffLine for package OFFLINE
792    o seaice:
793      - modify advection so that it works also on the C-grid
794      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
795        problem in multi-tile runs with C-grid
796      - add flags for clipping ice velocities and/or masking solver forcing
797      - fix drag (ocean on ice) formulation and a bug that caused noise in the
798        C-grid solver
799      - added a few comments to seaice_diffusion.F
800      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
801        are now exclusive)
802      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
803        required re-ordering the code a little:
804       + make DAIRN global variable (defined in SEAICE)
805       + move computation of the viscosities eta and zeta into a new separate
806         routine (because I need to recompute them in seaice_ocean_stress.F)
807    
808    checkpoint58b_post
809    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
810      update output.txt of exp. aim.5l_cs.thSI
811    o various mnc cleanups and improvements:
812      + shrink lookup tables by factor of ~4
813      + better error reporting when running out of lookup space
814      + able to handle longer path/file names (up to 500 chars)
815    o adjoint:
816      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
817      - TBD: "hidden" mom_vecinv recomp. in dynamics
818    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
819     (allow to differentiate between forcing components using new integer flags:
820      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
821     and add new flag to put Dissipation tendency out of Adams-Bashforth.
822    o ecco
823      - enable trend removal from SSH anomaly obs.
824    o adjoint
825      - a fix for PmEpR when #undef EXACT_CONSERV
826      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
827      - try to fix "hidden" recomp. in forward_step for NLFS
828        (NLFS seems broken sometimes after I checked it in)
829    o seaice:
830     - add c-grid version of the dynamic solver:
831       + three new routines that are the c-grid substitute lsr, dynsolver
832         and ostres
833       + put a few fields that were local to dynsolver into global common
834         blocks, so that I can move the computation of stresses etc into
835         seaice_lsr (saves coding but may break the adjoint).
836     - replace more hardwired parameters by runtime parameters
837     - add ice masks that mask the rhs of the implicit solvers where there
838       is no ice (commented out in seaice_dynsolver, because i am not sure
839       if this works properly), eventually this should replace the clipping
840       of ice velocities in seaice_dynsolver to +/-40cm/s.
841    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
842      include it only where its needed
843    o move balancing of fluxes before the call of external_forcing_surf
844    o seaice:
845      - correct units of turning angles (now they are really in degrees)
846      - move computation of GWATX/Y out of main routine into dynsolver
847      - initialize GWATX/Y in seaice_init
848    o Apply mask on Fresh-Water flux (needed for SSH forcing).
849      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
850    o seaice: add runtime flags for turning angles (default to zero)
851    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
852      and trend from exf forcing and ctrl control adjustments
853    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
854      (since checkpoint57x_post)
855    o change the default rotation period to 86164.s = the Earth rotation
856    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
857      and based on a reference stratification. Tested within hs94.cs-32x32x5.
858    o seaice advection: add code for choosing between the default (2nd order
859      central differences) and multiDim advection schemes provided by
860      pkg/generic_advdiff
861    o seaice:
862      - removed all references to SEAICE_GRID.h fields from
863        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
864        (cubed-sphere configuration will change a little)
865      - grid computations in seaice_init are obsolete now.
866      - cleaned up code a little so that is easier to read (hopefully).
867      - added new (better?) discretizations of default advection and diffusion
868        (turn on with SEAICEuseFluxForm)
869      - replace 1 in 3d global fields by kSurface in growth.F
870      
871    checkpoint58a_post
872    o seaice:
873      - bug fix in advect.F
874    o shelfice:
875      - separate shelfice load anomaly from pload (breaks with time
876        dependent forcing), => introduce constant field shelficeLoadAnomaly.
877        Its default is 0., but it may be computed more cleverly from (unknown)
878        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
879        done offline. A good approximation of the pressure load anomaly is
880        necessary to avoid large initial adjustment processes underneath
881        deep-reaching shelfice.
882      - small fix in ISOMIP shelfice_thermodynamics
883      - add more sophisticated thermodynamics of Hellmer (1989), this is
884        now the default
885      - give a few constants more intuitive names
886    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
887      if bulk formulae are used in long integration (especially EmPmR). Turn
888      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
889      if balancePrintMean, the imbalance that is substracted is printed to
890      STDOUT.
891    o fix bug (typo) in obcs_apply_eta.F
892    o add a new package shelfice which enables us to model the circulation
893      underneath shelf-ice with draughts of hundreds of meters.
894     - works
895     - to do: + include improved thermodynamics
896              + check whether kSurfC (from model/inc/SURFACE.h) can be used
897                instead of new field kTopC
898              + can we use topoFile, Ro_surf and existing code in ini_depth.F
899                instead of new field R_shelfIce and new code in ini_depth.F
900                and ini_mask_etc.F?
901              + adjust vertical mixing schemes?
902    o seaice pkg:
903     - add a cpp-flag to include a simple formula for a salinity dependent
904       freezing point of sea water at the surface
905     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
906       meridional stresses are now different (and hopefully correct)
907    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
908       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
909       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
910    o pkg/diagnostics: add options and parameters for regional-statistics
911       diagnostics ; define regions by reading a region-mask from a file
912       (might add other options later)
913    o pkg/bulk_force:
914     - add option and parameters to use AIM surface-flux formulae.
915     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
916       others forcing fields (defined in PARM05, parameter file "data") are loaded
917       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
918     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
919     - use the right EXCH call for uwind,vwind (to work on CS-grid).
920     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
921       and parameters (note: calcWindStress replaces .NOT.readwindstress).
922     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
923    
924    checkpoint58
925    o add "--embed-source" option to genmake2 which, when the supporting
926      tools can be compiled (as determined by genmake2) will turn on the
927      embed_files package which then embeds the entire MITgcm source code
928      (*.[fFhc] + Makefile) used for the build within the executable
929      - requested by CNH but off by default
930      - adds a paltry <9MB to the mitgcmuv executable in most cases
931      - only writes the output when useEMBEDSRC in eedata is true
932    o clean up 3-dim. relaxation codes:
933      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
934      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
935      * Thanks to Tom Haine for testing!
936    
937    checkpoint57z_post
938    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
939      affects output (@ truncation level) of exp. plume_on_slope ; updated.
940    o fix the pickup behavior for obcs in combination with ptracers
941    o fix a bug in ptracers_external_fields_load
942    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
943      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
944    o transfered surface NH pressure to eta field (if exactConserv).
945    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
946         and update lab_sea output.txt file.
947    o completing 3-dim. relaxation code: additional term
948         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
949      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
950      * At compile time, in "EXF_OPTIONS.h" set
951          #define  ALLOW_CLIMTEMP_RELAXATION
952          #define  ALLOW_CLIMSALT_RELAXATION
953      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
954          tauThetaClimRelax3Dim = 15552000.0,
955          tauSaltClimRelax3Dim  = 15552000.0,
956      * 3 cases:
957          1) Use a constant-in-time 3-dim. field
958          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
959          3) Real-time relax. to time-evolving prescribed field
960    o Adding Laplacian-type smoothness constraint on
961      initial and boundary (forcing) controls (ic, bc)
962      * enable at compile-time via
963        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
964      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
965      * Absolute scale somewhat unclear so far
966      * no area weighting was included since no other cost term does so far
967    
968    checkpoint57y_post
969    First step for a NLFS adjoint
970    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
971    o new init. routines for calc_r_star, calc_surf_dr
972    o still need to deal with ini_masks_etc
973    o testreport seemed happy
974    checkpoint57y_pre
975    
976    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
977    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
978    o add new offset feature to offline pkg (plus minor cleanup)
979    o cfc fixes for final year of integration
980    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
981      be in GCHEM_OPTIONS).
982    
983    checkpoint57x_post
984    o fix testreport Pb in multiple test experiment.
985    o cleanup our namelist syntax in verification:
986      - make it more F95 standards compliant (some work still needed)
987      - allows the vast majority of our tests to work with gfortran
988    o Non-Hydrostatic:
989     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
990     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
991    o Allow to apply AB on T,S rather than on AB(gT,gS):
992     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
993     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
994       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
995     - need a "clever" read_pickup to restart from the other AB formulation
996    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
997    o remove some unused variables (reduces number of compiler warnings)
998    o adjoint
999      * Disable useVariableViscosity for adjoint for time being
1000        (there are a number of extensive recomputations)
1001      * Initialize certain variables needed for adjoint
1002    
1003    checkpoint57w_post
1004    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1005                 fix the singleCpuIO RS version of MDSWRITEFIELD
1006       and add a WARNING if using globalFiles=T with multi-processors.
1007    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1008      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1009    o tracer advection scheme:
1010      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1011       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1012       was not very convenient).
1013      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1014       (further tests needed for the implicit DST & Flux-Limiter schemes).
1015    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1016      and sRef for convenience, handy, when you want to initialize
1017      ptracers in a large domain with a constant non-zero value. Also,
1018      untangle ptracers_init.F a little.
1019    
1020    checkpoint57v_post
1021    o change dome exp. to use variable viscosity in side-drag terms.
1022    o remove all the files from the cfc_offline test since they are now
1023      incorporated into tutorial_cfc_offline which has been producing
1024      identical results for a few days of testing
1025    o add new parameter: sideDragFactor to enable half-slip-side BC
1026      and change side-drag S/R to use viscosity from mom_calc_visc
1027      (can switch back by setting sideDragFactor=0.); affects results at
1028      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1029       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1030    o vorticity & strain are now computed without masking, to account for
1031      no-slip-side BC in variable viscosity calculation ; mask is applied
1032      anyway later on, before computing advection/coriolis terms.
1033    o modify exp4 to test new obcs support for reading from external files
1034      and for passive tracers
1035    o fix behavior of ptracers_monitor when monitor output is written to a
1036      netcdf-file; still not independent of monitor.F (writes in the same
1037      file).
1038    o change default value of tRef (put a uniform, meaningful value for ocean
1039      & atmos) and initialize sRef (was missing, as Martin mentioned).
1040    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1041      to be proportional to enstrophy dissipation length.  Thus,
1042       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1043      This is now consistent with Smagorinsky and with the manual.
1044    
1045    checkpoint57u_post
1046    o OBCS and PTRACERS: add open boundary support for passive tracers
1047      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1048        OB-values from file; this is not different from the way theta and salinity
1049        are treated
1050      - however, Orlanski-radiation conditions are not supported, and the model
1051        will stop if you use pTracers and Orlanski at the same time.
1052      - beefed up the rountine obcs_external_fields_load: now only those open
1053        boundary values are overwritten with values from files for which there
1054        are really files, otherwise the OB-fields remain untouched. This makes
1055        it possible to use different OBs at different ends of the domain (as
1056        with EXF)
1057    o reduce number of exch calls in shap_filt (s2).
1058    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1059      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1060    
1061    checkpoint57t_post
1062    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1063    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1064      same truncation, independent of the face number: affects affects several
1065      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1066    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1067      note that biharmonic viscosity + no-slip was not tested in any experiment.
1068    o fix bug in non-linear free-surf side-drag ; generate new output for
1069      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1070    o make mnc honor the writeBinaryPrec flag for most kinds of output
1071    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1072    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1073      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1074    o add brackets in multi-terms sum to get same truncation, independent of
1075      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1076      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1077    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1078      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1079      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1080      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1081      Suggested values of viscosity parameters found in mom_calc_visc.
1082      Many new viscosity diagnostics available.
1083    
1084    checkpoint57s_post
1085    o Add clearing-house for viscosity calculations, mom_calc_visc and
1086      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1087      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1088      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1089      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1090      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1091      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1092      ViscAhStrain and viscAhTension are now retired.
1093    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1094    o In response to JMC's bug report, genmake2 now ignores any soft-links
1095      that it finds in the *current* directory when searching for files.
1096      Soft-links found in any other source directories will still work as
1097      they did before.
1098    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1099      a C routine to unlimit the stack size
1100    o mnc-ify pkg/aim snapshot vars
1101    o mnc-ify pkg/land as requested by Daniel
1102    o various changes to mnc including:
1103      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1104      - output can now be grouped so that all files within a group
1105          change the ITER portion of their names in lock-step together
1106      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1107          and works with both EXCH1 and EXCH2 (but needs more testing)
1108      - writing works for all verification test cases w/ g77 on Linux
1109    
1110    checkpoint57r_post
1111    o make MNC variable initialization happen earlier
1112    o add diagnostics for (almost) each term of the momentum Eq.
1113    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1114    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1115    o remove MINIMAL_TAVE_OUTPUT option ;
1116      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1117    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1118      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1119    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1120    o add time-dependent SST, SSS control
1121    o cost terms in ecco/ modularized (new cost_generic.F)
1122    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1123    o new infrastructure for seaice model vs. obs misfits in seaice/
1124      * driver from the_main_loop.F is seaice_cost_driver.F
1125      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1126      * gradient check in Exp. 6a of natl_box_adjoint/
1127    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1128      (see README file)
1129    
1130    checkpoint57q_post
1131    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1132    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1133      - bug was reported by Jean-Michel and Ian Fenty
1134    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1135      update exp. cpl_aim+ocn output.
1136    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1137      Needed for high-res. runs with large global files
1138      to be able to limit tapelev size
1139    o Changed some tests for adjoint:
1140      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1141      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1142      * global_ocean.90x40x15/ back to default 3-level checkpointing
1143    o Modifications to enable scripted COMMON to MODULE conversion
1144      * verification/OpenAD/code/ has necessary scripts and description;
1145      * converts, compiles and runs successfully;
1146    
1147    checkpoint57p_post
1148    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1149    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1150      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1151    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1152    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1153      (was already the case for dissipation with mom_vecinv,
1154       and also the case for grad.PhiHyd when staggered-timeStep)
1155      This will allow to put dissipation out-off the AB time-stepping.
1156     Unfortunately, affects truncation error. Update output of exp. that "fails"
1157      (cg2d matching number) and leave the others for later: front_relax(10),
1158      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1159      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1160    
1161    checkpoint57o_post
1162    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1163      (2) its ready to be documented during the 20050801 DocFest
1164    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1165      for ideal_2D_oce and lab_sea on linux_ia32_g77
1166    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1167      in global1x1_tot/code_seaice_adj to access indices 32, 33
1168      (worth another tag)
1169    
1170    checkpoint57n_post
1171    o adding precip control xx_precip 32
1172    o adding swflux control xx_swflux 33
1173    o Replacing 10 forcing penalty cost routines by 1 generic.
1174    o Implementing partitioning in time-mean and variable adjustment
1175      for atmos. state.
1176    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1177    o in natl_box_adjoint:
1178      * updated exp 1 to 10
1179        (but does not have time-mean vs. variable split results yet)
1180    o updated global1x1/*_seaice_adj/
1181      to incorporate latest changes
1182    o enable useSingleCpuIO for mdsio vector routines
1183      (applies in particular to tapelev I/O)
1184    o removed inefficient K-loop in all active_file*control*.F
1185    
1186    checkpoint57m_post
1187    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1188      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1189    o pkg/exch2: filling of face-corner halo regions is optional
1190      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1191    
1192    checkpoint57l_post
1193     tag before updating tutorials (pre-release-2)
1194    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1195       for output and interpolation of input fields onto model grid)
1196    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1197       Affects results of exp. rotating_tank ; update output.txt.
1198    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1199          and taking the square quantity and/or using a fraction-weight field.
1200    o fix aim_diagnostics_init.F mate numbers.
1201    o add mnc output capability to diagnostics/diagstat and update
1202      our cvsignore files for the ACSII output generated
1203    
1204    checkpoint57k_post
1205    o lab_sea now uses diagnostics package and provides a suite of
1206      new EXF diagnostics output.
1207    
1208    checkpoint57j_post
1209    o exf
1210      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1211        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1212        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1213      * extended diagnostics output
1214        - now includes all EXF variables
1215        - hs, hl moved to common block
1216        - separate S/R for diagnostics, called after ctrl vector is added
1217        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1218        - EXFqnet contains true Qnet (i.e. includes qsw)
1219      * updated verif. lab_sea, global_with_exf
1220      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1221        to ensure that diagnostics sees a true EXFqnet
1222    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1223    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1224      several times with different frequencies.
1225    o mnc-ify the thsice package as requested by Daniel Enderton
1226      - the monitor--MNC output needs work
1227      - many attributes need to be added (most are currently blank)
1228    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1229      - many attributes need to be added (most are currently blank)
1230    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1231    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1232    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1233      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1234         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1235    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1236     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1237    
1238    checkpoint57i_post
1239    o Diagnostics package was changed: diagnostic allocation is now deactivated
1240      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1241    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1242      add 1rst Order upwind vertical Shear.
1243    o add a quick fix for A/B checkpointing in OFFLINE mode
1244    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1245      end-run around the C/Fortran linking horror in eesup/src/timers.F
1246    o added pkg/runclock: allows user to terminate run based on wall clock
1247    o added non-hydrostatic scaling parameter: nh_am2
1248    o pkg/my82: futile attempt to make results compiler-independent by adding
1249      some "_d 0", etc. no effect.
1250    o for mnc output, fill the 'T' coordinate var with myTime and create a
1251      separate 'iter' variable for iteration count
1252    o pkg/diagnostics:
1253      add new capability: output of Global/Regional & per-level statistics ;
1254      tested against monitor output (including land & thSIce) on various exp.
1255    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1256    
1257    checkpoint57h_done
1258      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1259      data.diagnostics, data.gchem, data.ptracers) is done.
1260    
1261    o pkg/diagnostics: prepare for Global/Regional statistics.
1262      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1263    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1264      and rename it: DIFFERENT_MULTIPLE
1265    
1266    checkpoint57h_post
1267    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1268    o pkg/diagnostics: change output frequency, now in seconds (instead
1269      of Nb of iterations). This requires to change data.diagnostics.
1270    checkpoint57h_pre
1271    
1272    o in mnc, let the user create the output dir if both mnc_outdir_date
1273      and mnc_outdir_num are false
1274    o add fflags() to pkg/diagnostics which allows one to specify, on a
1275      per-file basis, the file precision [default behavior is unchanged]
1276    o added diagnostics to pkg/kpp, including computation of mixed layer
1277      depth based on a temperature/density criterion
1278    o updated verification/natl_box to test the new pkg/kpp diagnostics
1279    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1280    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1281    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1282      not mnc -- this mistake was found by JMC and is now corrected
1283    
1284    checkpoint57g_post
1285    o add Adams-Bashforth 3rd Order time stepping:
1286      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1287      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1288    checkpoint57g_pre
1289    
1290    o make lambda[Theta,Salt]ClimRelax spatially varying
1291      (default remains spatially uniform constant based on tau)
1292    o added new control variables
1293      * init. uVel, vVel, etanN
1294      * lambda[Theta,Salt]ClimRelax
1295    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1296      (suggested by G. Forget)
1297    
1298    checkpoint57f_post
1299    o add parameter "baseTime" = model base time = time at iteration zero
1300      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1301      account for baseTime shift
1302    o move Coriolis arrays from PARAMS.h to GRID.h
1303    checkpoint57f_pre
1304    
1305    o mnc-ifying the seaice package
1306    o introduced an alternative length scale calculation for use in the limiting
1307      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1308    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1309    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1310      as well as grad(vort3).  Made it compatible with both approximate form
1311      for the cubed sphere and full form of these gradients.  Added flag
1312      useFullLeith to select between approximate and full form.  
1313    o add "d0" in getcon.F to reduce differences between compilers/platforms
1314      update output.txt of exp. fizhi-gridalt-hs
1315    o change port_rand funtion to allow to set the seed.
1316    o fix obscure MNC bug involving conversion between reals and integers
1317      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1318        new version is now more standards-compliant
1319    o adjoint-related modifications
1320      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1321      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1322      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1323    
1324    checkpoint57e_post
1325    o Adding eddy stress controls a la Ferreira et al.
1326    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1327    
1328    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1329      update output.txt of exp. fizhi-gridalt-hs
1330    o add more "Z" dimensions and associated coordinate vars to MNC
1331    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1332    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1333      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1334      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1335      months and years.  Requires pkg/cal.
1336    o diagnostics: add pickup functionality
1337      - off by default for backwards compatibility
1338      - current version only uses MDSIO -- MNC will be added
1339    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1340    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1341    
1342    checkpoint57d_post
1343    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1344    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1345      output from the diagnostics package
1346    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1347    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1348      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1349    o add coordinate variables to the MNC output from the diagnostics package
1350    o change MNC-flags default value: true when useMNC=TRUE
1351    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1352      the ability (off by default) to read the grid information using MNC
1353    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1354    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1355    o do snap-shot diagnostics at the middle of the time-interval (instead of
1356      at the end).
1357    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1358      new test for AIM with thSIce + slab-ocean
1359    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1360    o move state variable diagnostics to the beginning of the time step ;
1361      (note: still needs some work specially for snap-shot diagnostics)
1362      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1363    
1364    checkpoint57c_post
1365    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1366    o generate new output.txt files on faulks with g77 & the new -ieee option
1367    checkpoint57c_pre
1368    
1369    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1370      update output.txt of exp. global_ocean.90x40x15
1371    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1372      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1373    o add saltFlux(+File) forcing capability with periodicExternalForcing
1374    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1375    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1376    o improvements for the MNC output from DIAGNOSTICS:
1377      - correct handling of the unlimitied dimension
1378      - all dims now have associated coordinate variables
1379      - variables located at U, V, and Corner ("Z") points are now written
1380        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1381        *all* data points are output
1382    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1383    o added pkg/seaice/seaice_monitor.F
1384    o mdsio_readfield.F can now read files visible only to master MPI process.
1385    o pkg/seaice: some test code for ice-modified ocean stress
1386    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1387      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1388      spurious negative numbers for precipitation and humidity.  Will cause
1389      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1390    o pkg/ctrl/
1391      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1392        May be enabled via doPackDiag
1393      *  introduce z-scaling of
1394         + gradient (doZscalePack) and
1395         + control (doZscaleUnpack)
1396    o pkg/mdsio/
1397      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1398      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1399    
1400    checkpoint57b_post
1401    o simplify options in diagnostics_fill arguments (remove weird combinations)
1402    o fix MNC coordinate variables so that they now contain per-face index
1403      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1404      general, EXCH2 grids are only aligned to a "local" coordinate system
1405    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1406    o Implement instantaneous output within pkg diagnostics:
1407      setting a negative frequency in data.diagnostics produces
1408     "snap-shot" output (as opposed to time-average if freq > 0)
1409    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1410      NOTE: change ptracer diagnostics name: use 2 characters to work with
1411            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1412    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1413      becomes the coordinate variable for the 'T' dimension
1414    o add CF-style coordinate variables to MNC
1415      - just a first cut:  numbers are meaningless on the cubesphere and
1416        missing along the T axis but otherwise it works!
1417    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1418    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1419    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1420      this is based directly on what the model compute, so that the content of
1421      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1422    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1423    o clean up build options files for SunOS, in particular
1424      - remove -traditional from xmakedepend
1425      - change -xarch=v9 to -xarch=native for f77
1426      - restore use of make (not gmake)
1427      - add CC=gcc if using g77
1428    o changes per discussion of AM, JMC, & EH3 today:
1429      - move redundant "grid" variables out of "state" -- in preparation of
1430        creating proper CF-style coordinate variables and in recognition
1431        that any/all grid variables can be easily copied (eg. w/NCO) from
1432        the grid files into any of the other NetCDF files
1433      - *always* output grid variables with MDSIO (this will eventually be
1434        changed)
1435      - output MNC grid file if useMNC is true
1436    o every instance of _END_MASTER() has been found and replaced with
1437      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1438      preprocessors
1439    o re-arrange diagnostics pkg initialisation:
1440     - allow each package to extend the available diagnostics list
1441     - add some checking and fix small problems (multi-threaded, ...)
1442     - new S/R diagnostics_fill (replace fill_diagnostics):
1443       look through the short list of active diag. (instead of the long list)
1444       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1445    
1446    checkpoint57a_post
1447    o this set of changes restores TAMC compatibility
1448      tested for global_ocean.90x40x15 adjoint on trough
1449      (what a pain)
1450    
1451    checkpoint57a_pre
1452    o some modifs in tools/build_options for sunos
1453    o call ctrl_pack for ctrl at end for optimcycle=0
1454    
1455    checkpoint57
1456    o add horizontal bi-harmonic viscosity for vertical velocity
1457      - new parameter viscA4W (defaults to viscA4)
1458      - affects only non-hydrostatic code
1459      - to be done: no-slip lateral boundary conditions
1460    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1461    o implement Implicit Vertical advection for pTracers
1462    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1463      (implemented also for implicit vertical diffusion & advection)
1464    o OBCS: extend application of tracer open boundary conditions
1465      to a strip beyond the boundary of width Olx/Oly
1466    o add call monitor to TAF set of required calls (flow directives)
1467      and include in natl_box_adjoint
1468    o untangle a few ifdefs related to cost, ctrl, autodiff
1469      untangel a few ALLOW_ECCO_OPTIMIZATION
1470    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1471      (theta2, salt2 in ecco_cost_weights)
1472    
1473    checkpoint56c_post
1474    o OBCS as control variables
1475      - update ctrl_ad_diff.list, obcs_ad_diff.list
1476      - remove balance of obcs controls from default
1477      - fix index bug nobcs in ctrl_init
1478      - fix dummy fields filen in ctrl_pack
1479      - add dummy weights for obcs
1480    o lsopt: comment out fort.94 output
1481    o optim:
1482      - remove unnecessary header files
1483      - adjusted namelists
1484      - add xerbla.F to Makefile
1485    o exf:
1486      - multiple modifications of exf_check_range
1487      - unit change in exf_init_runoff from [m/year] to [m/s]
1488    o mdsio:
1489      - i/o-vector change debugLevel from debLevA to debLevB
1490    
1491    checkpoint56b_post
1492    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1493      is called from DO_THE_MODEL_IO
1494      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1495      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1496      - clean up PTRACERS_WRITE_TIMEAVE a little
1497    o add another verification experiment that tests both the cfc-pkg and
1498      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1499      reactive tendencies treated inline with regular timestepping
1500    o testreport previously did a lousy job of comparing small numbers, so
1501      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1502      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1503      testreport.
1504    o ptracers_monitor: bug fix for MPI
1505    
1506    checkpoint56a_post
1507    o GCHEM: finish reorganizating the package
1508      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1509        (introduces another 3D-array for each passive tracer, but only if
1510        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1511        gchemTendency is not needed because the timestep is done separately)
1512      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1513      - GCHEM is now---more or less cleanly---separate from PTRACERS
1514      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1515        so clear to me how that should be done in a general way.
1516    o CFC: improve formatting of output in CFC_ATMOS
1517    o PTRACERS:
1518      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1519        that ALL experiments with ptracers enable can be checked. This makes
1520        GCHEM_MONITOR obsolete.
1521      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1522        monitorFreq
1523      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1524    o add PTRACERS (PTR0[1-5]) to testreport output
1525    o exf_check_range:
1526      * default changed to .TRUE.
1527      * will check values for niter0 if debLevA, every timestep if debLevB
1528      * STOP in exf_check_range if 'out of range'
1529      * range chosen generous to allow for potential extema
1530      TBD: a version with stricter range
1531           permitted range would be runtime parameters
1532    o GMredi:
1533      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1534      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1535      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1536    o GCHEM:
1537      - move call to GCHEM_FORCING_SEP, so that it is now called before
1538        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1539      - introduced a useGCHEM runtime flag and applied it everywhere.
1540      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1541        this flag is now only visible within GCHEM-pkg routines.
1542      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1543        be replaced by a 3D array that is computed before thermodynamics; for
1544        this, the tracer ID iTracer had to be included into the parameter list
1545        of ptracers_forcing
1546      - set up forward_step to call gchem_forcing, that will replace
1547        gchem_forcing_int in ptracers_forcing
1548      - cleaning up
1549    o small cleaning of exch2: remove files that are also in eesupp/src
1550    
1551    checkpoint56
1552    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1553    o mnc: cleanup "full" files--fixes out-of-memory problem
1554    o ECCO-GODAE
1555      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1556      * fully merged and updated from SIO code
1557        windstress sign change affects
1558        - exf_inscal_[u/v]stress
1559        - sign of xx_tau[u/v] adjustments
1560        - signs in cost_scat
1561      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1562      * natl_box_adjoint updated and compressed
1563      * 2-level checkpoint switch added
1564        (tested in EXP. 1 of natl_box_adjoint)
1565      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1566    o SVD
1567      * first complete, non-hacked version for SVD calculations
1568      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1569        performed via direct access files admtlm_vector.it????
1570        (via ctrl_[un]pack)
1571      * optimcycle is used for ARPACK iteration counter
1572        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1573      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1574        and add linear transforms where necessary
1575      * controls are initial/final SST, SSS (can be extended; need to check
1576        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1577    o mdsio: filename info to both stderr, stdout
1578    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1579      from sign change
1580    
1581    checkpoint55j_post
1582    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1583      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1584    o add consistent build directories and .cvsignore files to verification
1585    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1586    o make all subroutines 30 or less characters in length for certain older
1587      compilers to work (a thorough search only turns up two routines in
1588      pkg/ptracers)
1589    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1590      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1591    
1592    checkpoint55i_post
1593    o change arrays for total vertical diffusivity (2.D if explicit,
1594      3.D if implicit) ; each ptracer uses its own background value.
1595    o added mnc/NetCDF output capability to ocn_compon_interf
1596      - added bits to verification/cpl_aim+ocn so that it can run on
1597        ITRDA and other clusters without the mpirun "-wd" option
1598    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1599      configuration
1600    o give MNC the ability to create additional files rather than
1601      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1602      - the default is just less than 2GB which is a practical limit
1603        on many systems
1604    o Compute the non-local term using either KPP vertical diffusivity (=default)
1605       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1606    
1607    checkpoint55h_post
1608    o add verification test "vermix"
1609    o remove all the *_ioinc flags and replace with the single global
1610      outputTypesInclusive flag
1611    o allow to set a vertical profile of vertical diffusivity for T & S
1612    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1613    o useMNC moved from data.mnc to data.pkg
1614    
1615    checkpoint55g_post
1616    o Renaming carbon AD experiments to comply with testreport conventions
1617    o Updating adjoint of Held-Suarez hs94.1x64x5
1618    o Fixing directives for non-ECCO forward_step, after ECCO directives
1619      have been fixed to avoid recomp. of do_oceanic_phys
1620      Works well for global_ocean.90x40x15,
1621      but recomp. issue remains for carbon
1622    o Updating adjoint output for natl_box_adjoint after
1623      pkg/ecco has been modified (see taga c55d_post)
1624    
1625    checkpoint55f_post
1626    o rename to timeave_init_fixed
1627    
1628    checkpoint55e_post
1629    o some delicate re-shuffle of store directives to avoid one
1630      extra call of do_oceanic_physics
1631      affects ecco_the_main_loop.F, do_oceanic_physics.F
1632      checkpoint_lev1_directives.h
1633    o NB: this may break global_ocean adjoint temporarily,
1634      but it is clear how to fix it. Will do later, need this now.
1635    
1636    checkpoint55d_post
1637    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1638    o ecco_cost_weights is modified to 1x1 runs
1639    o modifs to allow observations to be read in as
1640      single file or yearly files
1641    o enable to read exf forcing fields as either
1642      single file or yearly files (flag useExfYearlyFields)
1643    checkpoint55d_pre
1644    
1645    o switch between 2-level and 3-level checkpointing
1646    o add ability of MNC to write local and "partial" (eg. 2D slices where
1647      the full 3D field is never actually stored) arrays to NetCDF files
1648      with the correct (that is, the complete multi-dimensional) set of
1649      array indicies
1650      - used in mom_vecinv() to write the diagFreq output
1651      - tested (demonstrated) in verification/aim.5l_cs
1652    o further mnc-ification
1653      - add verification/lab_sea to the list with mnc setups
1654      - fix undefined mnc v-names in cd_code
1655      - add kpp to mnc output (both snapshot and timeave)
1656    o non-hydrostatic code
1657      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1658        in calc_gw.F
1659      - defaults to viscAh
1660      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1661        friction or Leith) in non-hydrostatic mode, as long as there is
1662        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1663    o pkg/cost
1664      extend simple cost functions to treat time mean quantities
1665      (T,U,V) via cost_accumulate_state from cost_tile
1666    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1667        be 2 times larger than the minimum size the advection scheme requires.
1668        now get a perfect conservation of salt in advect_cs test-exp (updated)
1669    o GGL90 (Gaspar's TKE mixed layer)
1670      - add horizontal diffusion of TKE, requires exchanges in
1671        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1672        default. In OPA there is no horizontal diffusion of TKE but the
1673        mixing coefficients are computed from a horizontal average of TKE of
1674        6 points or so. I think that diffusion has a little more physical
1675        justification.
1676      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1677        was in vain)
1678      - mask tke-variable in ggl90_init
1679    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1680    o fix biharmonic diffusion on CS-grid.
1681    o more obcs stuff
1682      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1683        for reading boundary values. This routine is called from
1684        obcs_prescribe_read
1685      - updated obcs_check
1686      - changed sponge layer relaxation parameter units for days to seconds
1687      - turned off sponge layer by default
1688      - changed argument list of OBCS_CALC to myTime+deltaTclock
1689      - fixed about 35 bugs in obcs_external_fields_load
1690    
1691    checkpoint55c_post
1692    o obcs stuff
1693      - new runtime flags useOBCSprescribe, useOBCSbalance
1694      - re-arranged obcs_calc
1695      - moved exf_getobcs to obcs_prescibe_read
1696        obcs_prescibe_read is called after ORLANSKI stuff
1697        and independent of it (executable can contain all).
1698      - updated obcs_check
1699      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1700        These may be necessary only if tangential velocities are
1701        prescribed at OB, not sure, needs testing.
1702    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1703      which simplifies the calls and passes the ifc check-bounds test
1704    
1705    checkpoint55b_post
1706    o add a 2D scalar, Z location, exchange_2 routine.
1707    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1708      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1709      affects advect_cs results (for the wrong reason): update output.txt
1710    o use a more standard discretization for biharmonic viscosity ;
1711     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1712      affects results of dome set-up: update output.txt
1713    o fix gad_advection.F (CubedSphere part), back to version 1.23
1714    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1715    
1716    checkpoint55a_post
1717    o merged code to
1718      * prescribe/read time-dependent open boundaries
1719        (works in conjunction with exf, cal)
1720      * sponge layer code for open boundaries
1721      * each boundary N/S/E/W now has its own CPP option
1722        (healthy for the adjoint)
1723    
1724    checkpoint55
1725    o up-to-date adjoint of previous breaks
1726      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1727      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1728      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1729      - carbon: * remove tr1-related adjoint verification
1730                * add ptracer as control variable
1731    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1732      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1733    
1734    checkpoint54f_post
1735    o in verification/carbin/ remove experiment related to
1736      ALLOW_PASSIVE_TRACER (array tr1 etc)
1737      code_ad/ input_ad/ results_ad
1738    
1739    o add two new packages
1740      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1741        + subject to optimization (memory)
1742      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1743        + subject to reordering (many GOTOs in the original code)
1744        + so far opps is called for every (i,j) point, and then operates in
1745          the vertical; one may want to reorder the scheme in order operate in
1746          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1747          fields)
1748    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1749      - all verification tests compile and run with linux_ia32_g77
1750      - defaults are compatible with current input files--nothing
1751        should change if you were not previously using MNC
1752      - MNC output has been added in numerous places (eg. timeave)
1753        but there are still a few writes not yet do-able with MNC
1754        (this is in progress)
1755      - flags now allow for either/or/both use of MDSIO and MNC and
1756        documentation will soon follow
1757      - numerous small formatting cleanups for ProTeX
1758    o add version info (via BUILD_INFO.h) to MNC and stdout
1759    
1760    checkpoint54e_post
1761    o add two new packages
1762      - pp81 (Packanowski and Philander, 1981), Richardson number and
1763        stratification dependent mixing
1764      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1765      - these scheme operate in a similar manner as KPP (without ghat, of
1766        course), however there is only one diffusivity that is used for both
1767        temperature and salinity (and passive tracers)ç
1768    o add offline package
1769    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1770      provided by Stephanie Dutkiewicz
1771    o genmake2: add ability to search for C compilers and cleanup test output
1772      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1773    
1774    checkpoint54d_post
1775    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1776    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1777      leading to additional shift by 5 days each year of integration
1778       (i.e. leading to considerable offset over the years)
1779    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1780    o start with no AB and no initial filtering (staggerTimeStep):
1781      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1782    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1783      (external loading & cpl import/export stay in forward_step.F)
1784    o update coupling interface to work with new staggerTimeStep
1785    o change MDSIO ptracers_pickup.
1786    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1787    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1788    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1789    
1790    checkpoint54c_post
1791    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1792      this affects (truncation error) output.txt of test-exp:
1793       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1794    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1795    o change Qnet to always be the net heat flux, (+upward).
1796      affects (truncation error) output of natl_box exp.: updated
1797    o define the max number of passive tracers in PTRACERS_SIZE.h
1798    o start to test mnc routinely in exp0
1799    o add sea-ice loading (sIceLoad) as a new forcing field.
1800    
1801    checkpoint54b_post
1802    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1803       impressive on Altix and Opteron systems)
1804    o diagnostics can now write NetCDF files through the mnc package
1805    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1806    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1807    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1808      affects (truncation error) output of lab_sea & natl_box exp.: updated
1809    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1810    
1811    checkpoint54a_post
1812    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1813    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1814    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1815    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1816      + internal_wave (shift in writing cg2d_ini_res)
1817    checkpoint54a_pre
1818    
1819    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1820      - modified verification/lab_sea and natl_box_adjoint accordingly
1821    
1822    checkpoint54
1823    checkpoint53g_post
1824    o prepare splitting of thermodynamics: store convect.counter in common block
1825    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1826      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1827    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1828    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1829    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1830    o restore adjointability
1831    
1832    checkpoint53f_post
1833    o modifications that affect AIM experiment results (update output.txt):
1834      - no advection of S at top interface Nr (pkg/generic_advdiff)
1835      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1836    o AIM pkg:
1837      - include stability function into surf.Flux derivative relative to Tsurf
1838      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1839    
1840    checkpoint53e_post
1841    o merged cylindrical coord configuration
1842    o added rotating_tank experiment
1843    checkpoint53e_pre
1844    
1845    checkpoint53d_post
1846    o faulks upgraded: re-generate output.txt that have changed:
1847       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1848    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1849    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1850    o added Sadourny discretization of Coriolis
1851      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1852      - re-enabled use of omega3 (useAbsVorticity)
1853    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1854      vector-invariant equations
1855      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1856    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1857      hopefully without new bugs
1858      - still to do: biharmonic friction for non-hydrostatic w
1859    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1860    o regenerated output for global_ocean_ebm (using -ieee)
1861    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1862      of mom_common/
1863      - simple re-arrangement of instructions within computing loop
1864    checkpoint53d_pre
1865    
1866    checkpoint53c_post
1867    o new version of coupler for AIM+thSIce and Ocean models
1868     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1869     - land: change Evaporation of snow
1870     - aim with thSIce: fix bug in snow-precip.
1871    o changes to calc_gw.F
1872     - bug fix for w^2 term near the bottom boundary
1873     - (hopefully) improve the lateral slip boundary condtions for use with
1874        partial/looped cells
1875      - because the bug fix changes two verification experiments anyway (exp5
1876        and plume on slope), change the lateral boundary condition from half slip
1877        to the value of no_slip_sides
1878    o ebm package wasnt quite up to the parallel task. Fixed that.
1879    o Adjoint of EBM package + verification
1880      * TLM OK
1881      * ADM not sufficient accuracy yet (needs further testing)
1882    
1883    checkpoint53b_post
1884    o Commiting new energy balance model to repository
1885      * package is pkg/ebm
1886      * verif. is verification/global_ocean_ebm
1887      * references are in ebm_driver.F
1888    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1889    C        Global thermohaline circulation. Part I:
1890    C        Sensitivity to atmospheric moisture transport.
1891    C        J. Climate 12(1), 71-82
1892    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1893    C        Global thermohaline circulation. Part II:
1894    C        Sensitivity with interactive transport.
1895    C        J. Climate 12(1), 83-91
1896    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1897    C        Destabilization of the thermohaline circulation
1898    C        by atmospheric eddy transports.
1899    C        J. Climate 7(12), 1870-1882
1900    o Will need long integration testing.
1901    checkpoint53b_pre
1902    
1903    o created pkg/mom_common in preparation for variable viscosity code
1904    o renamed and split ini_mnc_io
1905    o pkg/land: only liquid water can diffuse or run-off
1906    o AIM using land: soil wetness availability account for snow
1907    o added printMapIncludesZeros to EEPARMS namelist
1908    
1909    checkpoint53a_post
1910    o restore TAMC compatiility for exf_constants.h
1911      (no usage of _d in .h)
1912    o Additional storing in KPP in an attempt to fix
1913      TAMC problem with adjoint of KPP code.
1914      (no success...)
1915      Identical code works fine with TAF.
1916    o Fixed verification/natl_box_adjoint experiments.
1917      Initial conditions for Experiments 4 and 5 are now
1918      set to "SEAICE_initialHEFF=0", which is more reasonable,
1919      and hence gives results closer to that of Experiment 2.
1920      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1921    
1922    checkpoint53
1923    o stable checkpoint with up to date adjoint
1924      TLM tests only run for 1st grdchk at the moment. Its unclear if
1925      this is a code problem or a problem with resetting code for g_
1926      variables that is being autogenerated wrong.
1927      Otherwise:
1928       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1929       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1930         are both still in chaos following their security messes.
1931    
1932    checkpoint52n_post
1933    o various build (mostly genmake2) changes including:
1934      - ability to build/run more easily within Cygwin and MacOS X
1935      - more complicated Makefiles with a stronger dependence on Gnu Make
1936    o pkg/seaice modifications
1937      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1938        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1939        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1940      - changed proxy for geostrophic velocity and updated
1941        verification/lab_sea/results/* accordingly
1942      - removed ADI dynamic solver from pkg/seaice
1943      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1944        they caused a segmentation fault under certain circumstances
1945      - removed unused field WATR
1946    o bug fix in exf-package:
1947      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1948         now reflect that.
1949    o small fixes in the cal-package:
1950      - set reference date to first of January for the 'model'-calendar
1951      - failing of cal_CheckDate in cal_FullDate now actually results in a
1952        warning
1953    o small modifications in exf-package to increase flexibility:
1954      - change climtempfreeze from a constant to a runtime parameter that
1955        is specified in data.exf_clim (default = -1.9)
1956      - introduce runtime parameter windstressmax (default = 2.0) that is
1957        specified in data.exf
1958    o fix in pkg/thsice:
1959      - update Evap (Tsf changes) to be consistent with Latent heat flux
1960      - maintain snow precipitation unchanged (even if Tsf >=0).
1961     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1962    
1963    checkpoint52m_post
1964    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1965      this does not change any of the results, because myIter=0 in swfrac always
1966      lead to jwtype=2 (the default anyway), but the call makes little sense
1967      as a default
1968    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1969    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1970      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1971    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1972    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1973    o extending useSingleCpuIO option to work with new exch2 I/O format
1974      - old-style, missing-tile I/O is still accessible by defining CPP
1975        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1976    o monitor package can write to NetCDF files and/or STDOUT
1977    o fix re-definition bug in MNC_GRID_INIT_ALL()
1978    o doc/api_reference added
1979      - a framework for building an API Reference Manual using all
1980        the "protex" comments embedded in the code
1981      - see pkg/generic_advdiff, pkg/mnc for examples
1982    o MNC:
1983      - make myThid the last argument for all subroutines
1984      - new default for the grid files: NO halos
1985      - add useMNC and other run-time flags
1986      - separate per-file-group handling of the unlimited dimension
1987      - early initialization of MNC w/ flags read at the eeboot stage
1988        and lookup tables set in initialize_fixed
1989      - write all MNC output to a freshly-created directory
1990    o thermodynamics sea-ice (thsice) is now tested with testreport.
1991    o test exp. advect_cs: use the standard cs32 grid ; update output.
1992    o Added functionality to grdchk:
1993      pick global i,j,k position (or nearest wet) where to perform check.
1994    
1995    checkpoint52l_post
1996    o new land formulation:
1997      a) use ground enthalpy as prognostic variable to ensure exact
1998         energy conservation.
1999      b) account for water temperature and for latent heat of freezing
2000         in all processes (rain, run-off, ground storage)
2001      c) compute surface and ground temperature implicitly.
2002    o aim_v23 modification for new land model:
2003      a) Treat separately land / ocean / sea-ice surface fluxes
2004         to allow implicit computation of land & sea-ice surface temp.
2005      b) add snow precipitation.
2006    checkpoint52l_pre
2007    
2008    o fix problem (when 1 tile is empty) in min/max monitor.
2009    o fix bug in timeAve (u,vZetatave in common block)
2010    o no restoring terms under ice for pkg/seaice
2011    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2012    o bug fix for pkg/seaice pickups
2013    o change MNC call locations and add coordinate attributes
2014    o mask vorticity at the corner ; affects global_ocean.cs output
2015    o fix ini_curvilinear_grid ; test CS experiments with mpi
2016    o aim.5l_cs: modify sea-ice fraction input file ; update output
2017    o exf: Adding simple range check routine for exf fields after read
2018    
2019    checkpoint52k_post
2020    o removed top-level directory "diags"
2021      - we migrated these functions to pkg/timeave a long time ago
2022    o fixed bug introduced in pkg/monitor
2023    o accuracy ctrlprec = 32 insuffient for gradient checks using
2024      averaged fields (I/O via cost_averages)
2025      -> use ctrl.h in active_file*.F to control I/O precision.
2026    o paramter list of CALL ADTHE_MAIN_LOOP
2027    o added initial do_the_model_io to ecco
2028    o set all ...Freq to zero after cost_final
2029      taveFreq, dumpFreq, pChkptFreq
2030    o MAIN and ECCO differentiability restored
2031    
2032    checkpoint52j_post
2033    o fix nchklev in tamc.h for global_ocean...
2034    o Bringing flow and store directives up-to-date
2035    o Really weird thing!
2036      call do_the_model_io from the_main_loop with parameters
2037      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2038      TAF places a faulty re-call of initialise_varia
2039      after cost_final call which should not be there!
2040    checkpoint52j_pre
2041    
2042    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2043      error messages
2044    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2045    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2046      debug output
2047    o modfied mdsio_writefield.F to handle non-global files under exch2
2048    o update AIM Cubed-Sphere exp (aim.5l_cs):
2049      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2050    o update AIM Equatorial Channel exp:
2051      use standard aim_v23 pkg and change the SST fields to be more realistic.
2052    o globalFile now works with exch2
2053    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2054      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2055    o limit timeave output for hi-res integrations
2056    
2057    checkpoint52i_post
2058    o removed CPP_EEOPTIONS.h from verification/*/code
2059    o updated the tiling for global_ocean_pressure
2060    checkpoint52i_pre
2061    
2062    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2063      the old pkg/aim).
2064    
2065    checkpoint52h_pre
2066    o shortened offending lines in exch2_send_rx?.template
2067    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2068    o genmake2: add build & execute test for NetCDF code
2069    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2070      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2071    o added useSingleCPUIO flag to monitor.F and mon_out.F
2072    o added temporary hack for sea-ice dynamics on the cube:
2073      metric terms are ignored and it is assumed that
2074      there is no sea-ice on cube faces 1, 2, 4, and 5.
2075    
2076    checkpoint52f_post
2077    o added exch2 cube routines to pkg/exch2
2078    o modified hs94.cs-32x32x5 to use it
2079    o added new grid files to hs94.cs-32x32x5
2080    checkpoint52f_pre
2081    
2082    checkpoint52e_post
2083    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2084      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2085    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2086      to work with implicit vertical advection and AB ;
2087    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2088    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2089     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2090    checkpoint52e_pre
2091    
2092    o fix bug in impldiff when Nr=1 or Nr=2.
2093    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2094    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2095    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2096      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2097    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2098    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2099    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2100    
2101    checkpoint52d_post
2102    o re-tiled many expts to allow comparison in multi-processor mode
2103      - updated output accordingly
2104      - changed hs94.128x64x5 to use intial T from file rather than use the
2105        random number generator
2106    o add infrastructure in model routines for fizhi and gridalt packages
2107    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2108    o changes to permit hi-res, cubed-sphere, configuration
2109      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2110      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2111      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2112        of surface winds for the cube
2113      (A verification experiment, based on global_ocean.cs32x15, but with
2114       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2115       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2116       complete with example surface forcing files and matlab scripts to look
2117       at the output and compare it with that of global_ocean.cs32x15.)
2118    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2119       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2120       to conform to the common rule.
2121    o check-in the first version of the coupler + interfaces for multi-components
2122       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2123       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2124       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2125       - ocean and atmos. share the same horizontal grid (no interpolation).
2126       - exchanges between component and coupler is done in forward_step
2127    o new verification experiment, cpl_aim+ocn:
2128       coupled ocean - AIM atmosphere on cs32 grid.
2129    
2130    checkpoint52d_pre
2131    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2132    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2133    
2134    checkpoint52c_post
2135    o Fixing OPTIONS files for use of exf:
2136      - ALLOW_ECCO not needed
2137      - ECCO_CPPOPTIONS.h should not be included from
2138        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2139        as has been the case in the past
2140      - All cal/exf related options are currently set in
2141        single header file. Should remain so until we
2142        agree on a consistent new policy.
2143    o Removed all CPP options for cal package.
2144      cal has no more CPP options.
2145    o modified STOREs in GAD_ADVECTION
2146    o corrected key comp. for passkey
2147    
2148    checkpoint52b_post
2149    o new version: "thsice" of thermodynamic sea-ice pkg:
2150     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2151     - modify fluxes but do not change theta directly;
2152     - light cleaning of bulk_force pkg (still needed with thsice).
2153     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2154       + output_thsice.txt to test thsice & bulk_force pkgs.
2155    o put back grid & coriolis monitor output.
2156    checkpoint52b_pre
2157    
2158    o call "do_the_model_io" at the beginning (=> dump initial state)
2159    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2160    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2161      (need info on NUMBER_OF_PTRACERS)
2162    o missing PTRACERS headers in some routines
2163    o default tamc.h in pkg/autodiff supposed to crash
2164      to ensure proper customization
2165    
2166    checkpoint52a_post
2167    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2168      - moved surfaceTendencyTice from pkg/seaice to main code
2169      - subroutine FREEZE_SURFACE now limits only surface temperature
2170        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2171        => new output.txt for global_ocean.cs32x15 & global_with_exf
2172      - keep the old version of FREEZE for backward compatibility;
2173        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2174      - corresponding modifs for TAF directives
2175    o added surface flux output variables to TIMEAVE_STATVARS
2176    o time-averaged output for pkg/ptracers
2177    o fix problem with ECCO-related divided adjoint
2178      snapshot file was missing some ad-variables,
2179      but no warning issued by TAF
2180    
2181    checkpoint52a_pre
2182    o some bug fixes for #undef REAL4_IS_SLOW
2183    
2184    checkpoint52 = ecco_c52_e35
2185    o after testing adjoints of checkpoint51u_post
2186    
2187    checkpoint51u_post
2188    o this is the post-merge tag of the ecco-branch
2189      (needs another clean checkout and re-testing)
2190    o various natl_box_adjoint configs and results
2191      but no input fields
2192    o obcs adjoint not yet merged!
2193    o adding ECCO global 1x1 and 2x2 degree configs
2194    o updated/extended some store directives for seaice
2195    o pkg/ecco now containes ecco-specific part of cost function
2196    o top level routines the_main_loop, forward_step
2197      supersede those in model/src/
2198      previous input data.cost now in data.ecco
2199      (new namelist ecco_cost_nml)
2200    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2201    
2202    checkpoint51t_post
2203    o this is the pre-merge tag of the ecco-branch
2204    
2205    checkpoint51s_post
2206    o cleanup: removed various obsolete #define-s
2207    o pkg/grdchk
2208      - renamed 'ph-grd 3' to 'grad-res'
2209      - merged from ecco-branch
2210        (remaining bug fixes for obcs gradient checks)
2211      - additional high-precision output for testreport
2212        (grep for 'precision_grdchk_result')
2213    
2214    checkpoint51r_post
2215    o cleaned up or removed CPP_OPTIONS.h files
2216    o updated results for some of the tests to reflect the new
2217      optfiles (-ieee: -O0 instead of -O3)
2218    
2219    checkpoint51q_post
2220    o cd_code:
2221      - moved cd_scheme.F -> cd_code_scheme.F
2222      - separate read_checkpoint from cd_code_ini_vars.F
2223      - separated cd_code part from write_checkpoint
2224      - updated AD_SOURCE, generated .flow
2225      - added CD_CODE_VARS.h to the_main_loop
2226      - Moving cd_code specific store dir.s to pkg/cd_code
2227    o ctrl package totally restructured
2228      - pack/unpack now optional and decoupled from
2229        xx_/adxx_ I/O
2230      - ctrl_pack/unpack cleaned
2231        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2232      - confined inclusion of AD_CONFIG.h to where necessary.
2233    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2234    
2235    checkpoint51p_post
2236    o create initial cd_code package
2237      - WARNING: the initialization of fields within packages
2238        is broken because INI_FIELDS (where READ_CHECKPOINT is
2239        called) is called *before* PACKAGES_INIT_VARIABLES.
2240        This seems to be backwards since
2241        1) its important to initially zero the entire field including
2242           the "halo" region
2243        2) zeroing needs to be done *before* reading pickup info
2244           and the pickup call might or might not happen in any
2245           particular run
2246      - this needs an overhaul for R2
2247    o cleanup verification/*/code/GMREDI_OPTIONS.h
2248    o cleanup testreport
2249    
2250    checkpoint51o_post
2251    o bringing AD-related verif's up to date with genmake2
2252      - carbon/
2253      - global_ocean.90x40x15/
2254      - hs.94.1x64x5/
2255      - (front_relax/ )
2256    o (more) consistent directory structure for AD-related verif.'s
2257    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2258    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2259    o bug fix in find_alpha.F for MDJWF:
2260      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2261        change rho -> rho-rhoConst
2262      - replace call find_rho to find_rhonum
2263    o initialisation of rFlx extended to full array (required by TAF)
2264      and shifted to thermodynamics
2265    o removed PTRACERS.h in ptracers routine
2266    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2267    o Correcting initialisations for fVerU, fVerV.
2268    o helping TAF to recognize dependency on kUp for
2269      fVerU, fVerV
2270    o Replacing delZ by delR in pkg/ctrl/
2271    checkpoint51o_pre
2272    
2273    o undid all of cp51 pending some cleanups and discussion
2274    o added the [#include "AD_CONFIG.h"] statement to all files that need
2275       it for adjoint/tl #defines
2276     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2277     o removed tools/genmake since it no longer works
2278    
2279    checkpoint51n_post
2280    o modifications to make FREEZE flux visible to pkg/kpp
2281      - moved surfaceTendencyTice from pkg/seaice to main code
2282      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2283      - subroutine FREEZE now limits only surface temperature
2284        (this means new output.txt for global_ocean.90x40x15,
2285         global_ocean.cs32x15, and global_with_exf)
2286    o added surface flux output variables to TIMEAVE_STATVARS
2287    
2288    checkpoint51n_pre
2289    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2290    o added [#include "AD_CONFIG.h"] to all files that use the following
2291      defines:
2292      - ALLOW_ADJOINT_RUN
2293      - ALLOW_TANGENTLINEAR_RUN
2294      - ALLOW_ECCO_OPTIMIZATION
2295    
2296    checkpoint51m_post
2297    o incorporating changes to get TAMC/TAF working in genmake2
2298      - added new TAMC/TAF targets to the Makefile
2299      - various cleanups related to package handling
2300      - these changes should have no impact on the forward model
2301    
2302    checkpoint51l_post
2303    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2304     - faster algorithm for cal_addtime.F
2305     - higher precision arithmetic, where needed
2306     - pkg/exf *startdate variables changed from calendar date to
2307       model integration time
2308    
2309    checkpoint51l_pre
2310    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2311    o enable to apply restoring on S & T only in a latitude band.
2312    o update output (external_forcing_surf modif. change truncation errors)
2313       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2314    
2315    checkpoint51k_post
2316    o change default to: useNHMTerms=.FALSE.
2317     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2318       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2319     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2320        exp1, ideal_2D_oce
2321     - change data file of oceanic exp (leave the results unchanged for now)
2322       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2323    o set gravitySign automatically according to the vertical coordinate used
2324      (and change sign: back to "logical" value: +1 when R increases downward)
2325    o added an include barrier to the default CPP_OPTIONS.h and
2326      removed the #include "PACKAGES_CONFIG.h" from it
2327    o fix a bug in mom_fluxform (from chk51j_post)
2328    
2329    checkpoint51j_post
2330    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2331    o adjusted some flow directives (dynamics, thermodynamics)
2332    o added cubed-sphere case to test cost function
2333    o heckpoint_lev?_directives.h now include
2334      pkg-specific directives, whenever those are enabled.
2335    o Moving pkg-specific flow directives to corresponding pkg
2336      Moving pkg-specific differentiation list to corresponding pkg
2337      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2338      ---> conventions are
2339           - pkg_ad.flow
2340           - pkg_ad_diff.list
2341           - pkg_ad_check_lev?_dir.h
2342    
2343    checkpoint51i_post
2344    o merge of the branch-genmake2
2345      - knowingly breaks the older genmake
2346      - automatic generation of all ALLOW_${PKG_NAME} defines
2347      - new testreport supersedes older testscript
2348    o large number of package inclusion and header cleanups
2349    checkpoint51i_pre
2350    
2351    o new output for adjoin of global ocean vector invariant
2352    o fix for checkpoint of thermodynamic seaice and bulk_force
2353    o Steph gchem various cleanups
2354    
2355    checkpoint 51h_pre
2356    o fixed some single quotes
2357    o modify gchem pkg to be more versatile
2358    o modifications to clean up dic pkg
2359    o add pkg/cfc
2360    
2361    checkpoint51g_post
2362    o provide links for ARPACK and ADM*TLM
2363    o start removing verification/vero/
2364    o update AD-related stuff
2365      (in particular some IF-statements in model/src/ routines)
2366    o adding to verification/global_ocean.90x40x15/ adjoint of
2367      vector invariant setup
2368    
2369    checkpoint51f_post
2370    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2371    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2372      of tracer Green's fucntions for ocean inversion project.
2373    
2374    checkpoint51f_pre
2375    o Added on-the-fly spatial interpolation capability
2376        "USE_EXF_INTERPOLATION" to pkg/exf.
2377      - This is a temporary Cartesian-grid hack until
2378        the super-duper ESMF coupler becomes available.
2379      - See verification/global_with_exf/README for usage example.
2380      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2381        flags and modified pkg/seaice accordingly.
2382    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2383        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2384        non-local transport term.
2385    
2386    checkpoint51e_post
2387    o pkg/mom_vecinv:
2388      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2389      - add time-ave diagnostic of vorticity advection.
2390    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2391    o atmospheric geopotential: - include water vapor effect;
2392                                - use p^kappa in p* scaling.
2393    o land pkg: read initial state from files.
2394    o AIM : add stratospheric drag in the upper level
2395    
2396    checkpoint51d_post
2397    o change function ILNBLNK (=> last non-blank char.) to return zero
2398      (instead of the string length) when the string. char is empty
2399    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2400    o modif's to restore TAMC compatibility
2401      - avoid "_d" constructs in PARAMETER declarations
2402      - avoid interrupting lines by comment lines
2403    o Use cluster local disks for purely local I/O
2404      vs. globally visible disks needed for ctrl stuff
2405      (merged from ecco-branch)
2406      - new active_file_loc... and mdsio_..._loc routines
2407      - affected packages: autodiff, ctrl, grdchk, mdsio
2408    
2409    checkpoint51c_post
2410    o introducing integer flag debugLevel
2411      - debLevZero: suppress all output
2412      - debLevA: standard
2413      - debLevB: equivalent to current debugMode=.TRUE.
2414    o introducing pathname variable mdsioLocalDir for mdsio
2415      that can be specified at runtime
2416      (relevant for cluster I/O to local disk)
2417    `
2418    >>>checkpoint51b_post
2419    adjoint of ptracers
2420    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2421    o extended state in checkpoint_lev?, etc.
2422    o alternative ctrl/cost with tr1 or ptracer
2423    o new comlev1_bibj_ptracers
2424    o new ptracers.flow
2425    o made ptracers_forcing same as external_forcing_s
2426    o added verification for adjoint with ptracers
2427      - adm. grdchk fail so far
2428      - tlm. grdchk OK
2429      - checked tapelev/comlev recomputations: OK
2430    <<<checkpoint51b_pre
2431    
2432    checkpoint51a_post
2433    o added code for biogeochemistry package
2434      - new pkgs: dic, gchem
2435      - new subroutine in ptracers
2436    o modify code for biogeo packages
2437      - in model/src and pkg/ptracers
2438    
2439    checkpoint51
2440    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2441      - autodiff, ctrl, exf, grdchk, seaice
2442      kept separate packages
2443      - cost, ecco, obcs
2444    o updating verification/internal_wave, verification/lab_sea
2445      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2446    
2447    checkpoint50i_post
2448    o Preparing next differentiable checkpoint and sync
2449      of MAIN vs. ecco-branch
2450      - 1st step: this one is differentiable
2451      - 2nd step: next(! not this) checkpoint will have updated packages
2452                  from ecco-branch)
2453    
2454    checkpoint50h_post
2455    o new package "land": provide surface BC for AIM.
2456    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2457    o AIM: use true log-P extrapolation for near surface temp (= as in
2458        F.Molteni paper) ; update aim.5l_cs output.
2459    o New variable in PARM03 for more flexible pickups
2460    o somewhat cleaned package initialisation sequence for
2461      ctrl/ cost/ ecco/ in packages_... routines
2462    
2463    checkpoint50g_post
2464    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2465      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2466      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2467        made the default because of faster convergence than ADI
2468    
2469    checkpoint50f_post
2470    o exf totally restructured
2471      - replaced all exf_set_ routines by one generic exf_set_gen.F
2472        and made sure it's still differentiable
2473      - split exf_getffields.F into new exf_bulkformulae.F
2474      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2475      - updated adjoint/makefile and relevant verif. accordingly
2476    
2477    checkpoint50f_pre
2478     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2479          + change Evap over land. (update aim.5l_cs output)
2480     o added missing .cvsignores and made uniform across expts
2481     o changed configuration of tidal_basin_2d expt
2482     o added pkg/debug functions for tracing code in fatal crashes
2483     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2484     o new fn in pkg/monitor to stop model if solution grows too big
2485     o removed lots of single quotes from comments
2486    
2487    checkpoint50e_post
2488    o make KPP work with PTRACERS
2489     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2490       nearly a copy of kpp_transport_s
2491     - there is no analogue to SurfaceTendencyS, so I have to use
2492       gPtr(of the surface layer) instead
2493    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2494    checkpoint50e_pre
2495    
2496    checkpoint50d_post
2497    o change kpp output from multiple-record state files to single-record state
2498      files analogous to write_state.F
2499    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2500      analogous to the cg2d-related output.
2501    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2502      so that writing to internal file fn (with length 512) fails.
2503    checkpoint50d_pre
2504    
2505    checkpoint50c_post
2506    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2507    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2508    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2509    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2510    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2511    
2512    checkpoint50c_pre
2513    Merging from release1_p13:
2514    o bug fix for pkg/seaice dynamic solver
2515    o Added SEAICE_initialHEFF to pkg/seaice
2516    
2517    checkpoint50b_post
2518    o store u*,v* in gU,V instead of in guNm1,gvNm1
2519    o in order to put the momForcing out of the Adams-Bashforth:
2520      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2521      to timestep.F
2522    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2523    o re-generate output for highly sensitive test-exp:
2524       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2525    
2526    checkpoint50b_pre
2527    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2528    o corrected CPP option mismatch in exf_Bulk... functions for case
2529      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2530    
2531    checkpoint50a_post
2532    o Bug fix for merging between c50 and KPP.
2533      ikey was passed from thermodynamics to kpp_calc via
2534      common block rather than being recomputed in kpp_calc,
2535      in contradiction with new key itdkey.
2536      New key ikppkey created, and tamc.h headers updated.
2537    
2538    checkpoint50
2539    - 2nd step of merge with ecco-branch:
2540      merge changes in ecco-branch back into main trunk
2541    - bug fix in find_alpha
2542    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2543    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2544    - merged some sliced AD support routines
2545    
2546    checkpoint49
2547    merged from ecco-branch:
2548    o exf:
2549      - Enable initialisation of forcing fields to constant
2550        (runtime) values.
2551      - in exf_getffields.F
2552        Reduce i-/j-loop to interior domain, discarding overlaps.
2553        That also fixes wrong TAF-key computations for key_1, key_2
2554        with bulf formulae.
2555      - exf_init.F modify #ifdef for exf_init_evap
2556      - exf_getffieldrec.F, ctrl_getrec.F
2557        The following INT-usages are not safe:
2558          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2559          fldcount = int(fldsecs/fldperiod) + 1
2560        and were modified.
2561    o autodiff: checkpoint_lev...
2562      - updated storing for bulk formulae (some arrays were missing)
2563      - added state for seaice package
2564      - synchronized with main branch
2565    o DIVA:
2566      Modif.s in
2567      - the_main_loop.F
2568      - the_model_main.F
2569      and added cost_final_restore.F cost_final_store.F
2570      o With these changes, it is possible to fully separate
2571        the first forward run to compute the cost function (mdthe_main_loop)
2572        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2573        into separate model executions.
2574        This enables better tuning of DIVA to given queue sizes.
2575      o Loss of cost function value in consecutive DIVA runs is
2576        fixed by storing to 'costfinal' file.
2577      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2578        beginning/end of adjoint integration is accounted for.
2579      The current changes apply to TAF-1.4.26.
2580      TAF has one remaining bug, requiring one manual change
2581      (see MITgcm manual).
2582    o cal: synchronized between MAIN and ecco-branch
2583    
2584    checkpoint48i_post
2585    o Changes to restore differentiability of code w.r.t. previous tag
2586      (mostly adding new routines to make list and replacing
2587      pressure by totPhiHyd).
2588    o Updated and merged grdchk package
2589      - has both ADM and TLM checks
2590      - works for single- and multi-proc.
2591      - output cleaned
2592      - worked successfully for parallel DIVA
2593    o genmake:
2594      - Adding -platform=SP4
2595      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2596    o Modif. for DIVA:
2597      ctrl_unpack should not be called in intermediate DIVA interval.
2598      (similar thing would apply for active files such as
2599      tbar, sbar, psbar, which should not be reinitialised;
2600      only relevant for ecco-branch)
2601    
2602    checkpoint48h_post
2603    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2604    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2605    o Added SEAICE_initialHEFF to pkg/seaice
2606    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2607    
2608    checkpoint48g_post
2609    --- EOS:
2610    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2611      store total Potential in totPhyHyd for diagnostics & EOS.
2612    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2613    --- Pressure/geopotential gradient:
2614    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2615    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2616      ( changes results of global_ocean_pressure )
2617    o NLFS + z-coord.: add eta*Rho' contribution.
2618    o accurate phiHyd when using interface-W at the middle between 2 centers
2619     ( changes results of ideal_2D_oce )
2620    o includes r* 2nd term in potential gradient.
2621    
2622    checkpoint48f_post
2623    Merging from release1_p12:
2624    o Modifications for using pkg/exf with pkg/seaice
2625      - improved description of the various forcing configurations
2626      - added basic radiation bulk formulae to pkg/exf
2627      - units/sign fix for evap computation in exf_getffields.F
2628      - updated verification/global_with_exf/results/output.txt
2629    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2630      (SBO) core products, including oceanic mass, center-of-mass,
2631      angular, and bottom pressure (see pkg/sbo/README.sbo).
2632    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2633      to avoid negative values in shallow regions.
2634      - updated verification/natl_box/results/output.txt
2635      - updated verification/lab_sea/results/output.txt
2636    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2637    o Added useSingleCpuIO option (see PARAMS.h).
2638    o Updated useSingleCpuIO option in mdsio_writefield.F to
2639      work with multi-field files, e.g., for single-file pickup.
2640    o pkg/seaice:
2641      - bug fix in growth.F: QNET for no shortwave case
2642      - added HeffFile for specifying initial sea-ice thickness
2643      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2644    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2645      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2646    o pkg/seaice:
2647      - adjoint-friendly modifications
2648      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2649    
2650    checkpoint48e_post
2651    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2652    o dynamics: change definition of computational domain & adapt mom_fluxform
2653      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2654    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2655        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2656        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2657        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2658        inverted_barometer solid-body.cs-32x32x1
2659      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2660    
2661    checkpoint48d_post
2662    o in preparation for r*:
2663     a) use pre-computed gradient of hydrostatic potential:
2664        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2665     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2666        => affects results of glob_oce_pressure (different truncation error)  
2667      update output.txt of ideal_2D_oce & global_ocean_pressure
2668    
2669    checkpoint48d_pre
2670    o in preparation for r*:
2671      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2672      pass the 2 comp. of the grad. as arguments to momentum S/R.
2673      but for the moment, only used if it does not change the results.
2674    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2675    
2676    checkpoint48c_post
2677    Modifications in treatment of initial flux forcing controls
2678    to avoid extra storing of flux fields.
2679    
2680    checkpoint48c_pre
2681    o Added tidal_basin_2d experiment (currently 1D!)
2682    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2683    
2684  checkpoint48b_post  checkpoint48b_post
2685  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
2686   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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