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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.864 by jmc, Thu Aug 23 22:43:47 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 external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
8      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
9    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
10      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
11      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
12      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
13      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
14      -> update output.txt
15    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
16     this affects truncation error: -> update output.txt of exp:
17      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
18      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
19    
20    checkpoint59f
21    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
22    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
23      a bounded range (in forward mode)
24    o pkg/ecco, ctrl, autodiff and mom_common:
25     internal parameter controls, completements of implementations
26    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
27    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
28      (not seem any difference in testing results).
29    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
30       at face corners.
31    o pkg/generic_advdiff:
32     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
33      loop range indices for computing vertical advection tendency
34      and do the calculation in the interior only (no overlap) ;
35      for now, only implemented for SOM advection (to save CPU time).
36     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
37    o exch2 adjoint
38      First set of changes:
39      - add exch2 hand-written adjoint templates
40      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
41        This will require cleanup in pkg/autodiff/*.F
42        (changed routines currently kept separate in verif. code/)
43      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
44        that used to hide exch2 or cubed-sphere specific code
45        (commented via 'cph-exch2')
46    o pkg/seaice
47      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
48    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
49       output of global_ocean.cs32x15.thsice .
50    
51    checkpoint59e
52    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
53      for B-grid vector (not yet tested) and C-grid vector (<- only used
54      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
55    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
56      (#ifdef ALLOW_SALT_PLUME)
57    o gather_2d/scatter_2d: removed halo regions
58    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
59      scheme and the corresponding test case (under front_relax dir). For now,
60      only available with Skew-flux form and not yet tested in realistic set-up.
61      adjoint: store directives updated, but gradient checks deteriorated,
62      so maybe GM/Redi adjoint is now broken.
63    o seaice adjoint
64      * add AREA, HEFF, HSNOW as control variable
65        (should not change lab_sea results)
66      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
67    o pkg/seaice:
68      * added computation of saltFlux in seaice_growth;
69        For time being, sea ice salinity is assumed constant
70        contribution of snow flooding to freshening of sea ice is neglected.
71        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
72        defaults to 0.0 in order to maintain backward compatibility.
73        Typical values for SEAICE_salinity are 4 to 10 g/kg.
74      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
75      * added SEAICE_availHeatFrac, which specifies fraction of surface level
76        heat content used to melt or grow ice
77      * commented out cap of HICE: it helps keep ice thinner
78      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
79      * applied OBCS T/S mask to HEFFM sea ice mask
80    
81    checkpoint59d
82    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
83     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
84     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
85    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
86     and change default value of parameter "GM_Small_Number";
87     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
88       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
89       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
90    o pkg/ecco: cost function when applying pkg/smooth to controls
91    o pkg/ctrl: add forcingPrecond run time parameter
92    o pkg/seaice:
93     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
94     - fix bug in metric terms of u-equation in LSR solver (implicit part),
95       changes verification/lab_sea
96     - rearrange implicit part of u-equation in LSR solver to make it easier to
97       read, understand, and debug. This causes changes at the truncation level.
98     - fix (serious) bug in the boundary conditions (sign error in the implicit
99       part) of the LSR solver. Changes all LSR results.
100     - fixed problem with HSNOW initialization to avoid thick snow when AREA
101       is initilized with small values - does not change lab_sea results.
102     - added HsnowFile initialization capability
103    o pkg/smooth: addition to model/src and pkg/ctrl so allow
104     initialization of pkg/smooth and application to control vector
105    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
106    o dependencies: pkg/profiles requires pkg/cal
107    o pkg/profiles:
108     - added option ALLOW_PROFILES_GENERICGRID
109         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
110         that interpolation information (grid points and coefficients) is provided
111         within the netcdf input files.
112         -> sample matlab scripts can be found in MITgcm_contrib/gael
113         that allow you to prepare netcdf input files.
114     - also modified: cleaner include statements, cleaner error print statements,
115       cleaner stops when error, and more tests of the netcdf input files consistency.
116    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
117    o pkg/seaice:
118     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
119       requires a new routine: seaice_diagnostics_fill.F
120     - make sure that seaice does not move if not forced (pressure replacement
121       method, Hibler and Ip, 1995), changes results
122     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
123     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
124       It is turned off by default (=-1.), because it changes the results.
125     - make it possible to read AREA from a file, too.
126    
127    checkpoint59c
128    o add S/R and diagnostics for oceanic mixed-layer depth
129    o move GMRedi call after all vertical mixing schemes (including KPP)
130    o pkg/thsice:
131     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
132      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
133    o pkg/obcs:
134     - bug fix for balance code
135    o pkg/seaice:
136      - allow values of SEAICE_elasticParm > 1
137      - add new parameter SEAICE_evpTauRelax as an alternative
138        to SEAICE_elasticParm
139      - make lsr boundary conditions free slip (by default), changes result
140      - add code for no slip boundary conditions for lsr
141      - set minimum of zeta to zero (and not 4e8) (changes results)
142      - add a cap on AREA after advecting AREA if seaice_growth is not called
143    o change calculation of Visbeck K:
144      - no longer depend on tapering scheme; instead, compute slope (limited
145        by GM_maxSlope). this is equivalent to what was comuted before with
146        clipping or linear tappering.
147      - fix vertical averaging (wrong by 1/2 level)
148      - leave the old version (but will not be maintained) within
149        #ifdef OLD_VISBECK_CALC / #endif
150      - update output of exp. ideal_2D_oce
151    o change error catch in calc_r_star to improve vectorization
152    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
153      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
154    o adjoint:
155      Re-organized adjoint checkpointing according to Matt Mazloff
156      (but with modifs/completions/cleanups)
157      Storing is now bundled into large arrays to optimized I/O
158      (and second step in cleanup of the_main_loop)
159    
160    checkpoint59b
161    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
162      - export/import (between ocean & coupler) fields needed for ocean DIC.
163    o pkg/seaice:
164      - get rid of three more exchanges seaice_calc_viscosities (required
165        different loop boundaries in seaice_lsr and seaice_ocean_stress)
166      - bug fix in seaice_ocean_stress (update of lab_sea required)
167      - reduce loop boundaries to necessary minimum also in seaice_evp
168      - go back to the old way of computing deltaC/Z as the adjoint likes that
169        better
170    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
171      passive tracer to an Age Tracer) + update output.txt
172    o pkg/exf:
173      - implement A-grid / C-grid selection for wind-stress input files.
174      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
175      for now, in exf_bulk_largeyeager04.F only :
176      - change implementation for case where windspeed + 2. components wind-stress
177        are read-in. AND use rhoConstFresh to convert evap.
178    o pkg/seaice:
179      - use correct EXCH_UV for wind-forcing (on A-grid).
180      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
181        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
182    o pkg/exf:
183      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
184      EXF_INTERPOLATION:
185      - merge global_with_exf/code version of exf_interp_read.F
186        to the main code ;
187      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
188        reading the file ; Important: This options needs to be defined to recover
189        previous code.
190        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
191      - no longer loose real*8 precision along the way when using exf_iprec=64.
192    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
193      - change discretisation of evp-solver in order to avoid another exchange
194        (changes lab_sea) and clean up a little
195      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
196        help the adjoint (this also changes the results slightly)
197      - add a few "_d 0" where they had been missing in seaice_evp.F
198      - cleaning up: remove unused seaice_calc_rhs.F
199    o pkg/exf: some cleaning-up:
200      - change various "constants" into runtime parameters
201      - cleaned-up Large&Yeager04 routine which should eventually
202        replace exf_bulkformulae.F (changed names of S/R and CPP)
203        and merged various ALLOW_ATM_WIND options
204     only used with thsice pkg (in thsice_get_exf.F):
205      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
206        which are used when useStabilityFct_overIce=TRUE (= the default)
207      - change default values of ice & snow emissivity and scale downward LW
208        by ice & snow emissivity.
209    o pkg/thsice:
210     fix few little problems, in thsice_calc_thickn.F:
211      - growth vertically (and not laterally) if iceFrac == iceMaskMax
212      - melt only laterally if hIce < hThinIce (as the comments say)
213      and in thsice_extend.F:
214      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
215      - start to form ice as soon as the minimum ice-volume is reachable.
216     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
217      and cpl_aim+ocn
218    o pkg/kpp
219     - move computation of surface related input fields to KPP into a new
220       subroutine kpp_forcing_surf.F
221     - remove wrong (within bi,bj loops) EXCH calls.
222     - little cleaning (add argument myThid in last position, cvs header ...)
223     - for now, fix conservation problem by exchanging KPPviscAz (may not
224       be the best fix)
225    o pkg/seaice
226     - check for inconsistent evp parameter/cpp-flag combination
227     - remove leftover errIO flat for obsolete name list error handling
228    o OpenAD
229     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
230    
231    checkpoint59a
232    o pkg/seaice: some parameter clarifications and a little bit of clean up
233    o pkg/thsice: rename run-time parameters:
234       himin       -> hIceMin
235       himin0      -> hThinIce
236       hihig       -> hThickIce
237       i0          -> i0swFrac
238       transCoef   -> bMeltCoef
239       frac_energy -> fracMelting
240      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
241       with default values (for now) that do not change the results.
242      remove old version of thsice vars advection in pkg/seaice.
243    o in FFIELDS.h:
244      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
245      - make pLoad & sIceLoad always available (but still only used if
246         ATMOSPHERIC_LOADING is #define).
247    o pkg/kpp: replaced _KPP_RL with _RL
248    o bug fixes for vertical diffusivity computations when both KPP and
249        3D diffusivity arrays are used.
250    o pkg/seaice: fix bug in evp solver, while doing that
251      - change (improve?) discretization of stress computations for both
252        cgrid-lsr and evp solver
253      - add a new routine to compute strain rates
254      - the above changes lab_sea results
255      - add no slip conditions for evp solver (off by default), lsr-version
256        may follow
257      - fix exchange for shear at Z-points (does not change lab_sea)
258      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
259        (to force the user to pick a time step since there is not "safe" way
260        of choosing it)
261      - add principal stress diagnostics
262      - rearrange fields for evp a little to avoid having to call a: too many
263        exchanges and b: exchanges for stress trensor components which we do
264        not have.
265      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
266        of evp, complete rewrite for lsr case (latter is does not yet work
267        in all cases)
268    o pkg/kpp: add code to have mixing in shelf ice caverns
269      - add myThid to all kpp routines (long overdue)
270    
271    checkpoint59
272    o pkg/exf:
273      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
274        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
275      - move exf header files from lower_case.h to UPPER_CASE.h ;
276        add missing cvs Header & Name
277      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
278      - add namelist param. selectStressGridPosition, exf_monFreq
279      - retire many _CLIM routines, and remove data.exf_clim
280        + params moved to data.exf
281        + climsst, climsss now handled by exf_set_gen, i.e.
282          climss?period=0 refers to constant field,
283          climss?period=-12 to monthly forcing
284      - split up namelists in data.exf
285    o pkg/seaice:
286      - remove seaice_exch and seaice_exch_uv
287      - remove superfluous exchange of theta
288      - add myThid to seaice_budget_ocean/ice
289      - add new interface for atmospheric wind forcing (C-grid only)
290        + new routine
291        + two new field (taux, tauy for stress over ice)
292        + removed one global field (DAIRN) for C-grid case only
293    o pkg/thsise
294      - 2nd set of modifs for thsice adjoint in conjunction with exf
295    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
296    
297    checkpoint58y_post
298    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
299      vertical diffusivity, similar to that in MOM4; turned on using
300      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
301      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
302    o Added capability for 3D specification of background vertical diffusion
303      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
304      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
305      "data" file that contains the 3D vertical diffusivity coefficients.
306    o ice dynamics (pkg/seaice) with thsice thermodynamics:
307      - add code within pkg thsice to advect & diffuse sea-ice fields
308      similar to (and will replace) what has been added in  seaice_advdiff.F,
309      but: - conserving Mass, Heat & Salt.
310           - better when using non-linear advection scheme (not yet fully tested)
311           - can also be used in atmospheric set-up (for now, only the diffusion).
312    
313    checkpoint58x_post
314    o IO option for global-file compact format:
315      - add options when generating topology (utils/exch2/matlab-topology-generator)
316      - add I/O capability (pkg/mdsio).
317      - adapt utils/matlab/rdmds.m to read this format.
318      for now long-line format not yet supported by pkg/mdsio (& exch2).
319    o shelfice: add a few diagnostics
320    
321    checkpoint58w_post
322    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
323      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
324      (and replace horiVertRatio in NH code).
325      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
326                         and tutorial_plume_on_slope (sensitive to truncation)
327    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
328      directly to drive seaice model (C-grid only)
329    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
330     - reintroduce computation of wind from stress,
331     - compute tau (in exf_bulkformulae.F) from windstress averaged to
332       mass points to avoid tau = 0
333     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
334    o rdmnc.m: make it work with "global" files created with gluemnc
335    o rdmnc.m : some improvements in dealing with singleton dimension
336      (tested on all testreport mnc output files).
337    o genmake2: disable pkg/profiles if netcdf test fails.
338    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
339    o move call to cal_readparms up to make calendar parameters/variable available
340      to all packages
341    
342    checkpoint58v_post
343    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
344      useDynP_inEos_Zc tested.
345    o pkg/exf: changes to properly interpolate/mask/scale initial fields
346    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
347      and portions thereof.  See read_cs.txt for description and examples.
348    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
349      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
350      following the great-circle arc between those 2 points.
351    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
352      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
353    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
354     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
355     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
356     - still needs work (not working with some options ; efficiency to improve)
357       and serious testing.
358     - use this scheme for temperature & salinity in 2 advection test exp.:
359       advect_xy & advect_xz, respectively.
360    
361    checkpoint58u_post
362    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
363    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
364    o testreport: add option "-skipdir" to skip some test.
365    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
366      momentum calculation.
367    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
368    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
369      remove checkpoint.F and the_correction_step.F (no longer used);
370      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
371    o add option (linFSConserveTr) to correct for tracer source/sink due to
372      Linear Free surface
373    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
374    o pkg/thsice: fix reading mnc-pickups
375    
376    checkpoint58t_post
377    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
378    o pkg/mdsio:
379     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
380       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
381       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
382     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
383     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
384       either MDS_READ_FIELD or MDS_WRITE_FIELD )
385     - new S/R (to replace MDSWRITEMETA), which allows to write more
386       informations (variable names, time ...) to meta files.
387     - modify rdmds.m to give back the meta file content.
388    o pkg/diagnostics: change vertical interpolation to be safer, and more
389       flexible (define p-levels to interpolate to in data.diagnostics);
390      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
391       diagnostic pointer.
392    o pkg/seaice: more cleaning up of seaice_growth, added many comments
393    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
394    o fix multi-category seaice:
395     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
396       SEAICE_MULTICATEGORY
397     - fix short wave heat flux
398    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
399       and allow to use EVP solver. Change forward lab_sea: test both EVP
400       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
401    o Initial check-in of lab_sea adjoint
402      (very similar to natl_box_adjoint/code_seaice)
403      * used C-grid and EVP solver
404      * used KPP, GM/Redi
405      * uses inAdExact=.TRUE.
406      * gradient checks fail for both ADM and TLM
407        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
408        f.d. gradients actually seem more problematic than ADM, TLM gradients;
409        issue is related to forward mismatch between g77 an ifort
410    o pkg/seaice: overhaul of thermodynamics
411     - growth.F and groatb.F are replaced by new routine seaice_growth.F
412     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
413     - move a few global fields out of SEAICE.h into seaice_growth.F and
414       make them 2D (FICE/QNETO/ ...)
415     - remove FO (it is the same as QNETO)
416     - introduce a few local fields to avoid modifying external fields such
417       as atemp, etc.
418    
419    checkpoint58s_post
420    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
421      changed exf_set_gen.F so that
422        genperiod=0 means input file is one time-constant field and
423        genperiod=-12 means input file contains 12 monthly means
424    o CG2D: use pre-computed solver main-diagonal (stored in common block);
425      this affects truncation error ; generate new output file for exp. which
426      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
427        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
428        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
429        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
430        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
431        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
432    o start implementation of deep-atmosphere and anelastic formulation
433    o verification: remove 2nd copy of input files and use script "prepare_run"
434      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
435    o mom_common/vecinv/fluxform: fix a few initialisation isssues
436    o profiles: fix for multithreaded case
437    
438    o diagnostics: rename few diags:
439      s/'PRESSURE'/'RCENTER '/g
440      s/'TICE    '/'oceFreez'/g
441      s/'TAUX    '/'oceTAUX '/g
442      s/'TAUY    '/'oceTAUY '/g
443      s/'SWFLUX  '/'oceQsw  '/g
444      s/DIFx/DFxE/g
445      s/DIFy/DFyE/g
446      and add few ocean-forcing diagnostics:
447      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
448    o modifications to pkg/seaice/growth.F and budget.F, which change results of
449      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
450      as actual snow thickness.  It now refers everywhere to effective snow
451      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
452    
453    checkpoint58r_post
454    o modifications to pkg/seaice/growth.F, which change results of
455      lab_sea experiment: fixes pertain to melting snow over open water, to
456      masking EVAP under sea ice, and to using the correct AREA variable for
457      computations of EVAP, PRECIP, HSNOW, and GHEFF
458    o add ability to read bathy, salt, and theta using MNC (off by def)
459    o add flooding algorithm and advection of HSNOW for pkg/seaice;
460      both are turned off by default and do no change any results
461    o seaice advection with pkg/thsice: a step toward the use of non-linear
462      advection scheme, but #ifdef or commented out for now (requires more EXCH).
463    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
464      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
465      in natl_box (affects results @ truncation level: update output.txt)
466    o multi-threading and IO:
467      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
468      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
469        (needed to work with SingleCpuIO): tested in all verif. exp.
470    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
471      affects the results (but none of the verification test uses this scheme).
472    o Adding some pkg/diagnostics capability to pkg/seaice
473      (will certainly be subject to changes)
474    o ctrl: adding new control variables:
475      lwflux, lwdown, evap, snowprecip, apressure, runoff
476    
477    checkpoint58q_post
478    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
479      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
480      high_res_cube configuration by 4% on Columbia.
481    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
482      add (in global_with_exf/code) a version of EXF_INTERP_READ without
483      dynamical allocation (seems to work in multi-threaded).
484    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
485      single CPU io) so that TAF does not have to see EESUPPORT.h
486    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
487    
488    checkpoint58p_post
489    o obcs: stop if obcs is used with useCDscheme = .true.
490    o shelfice:
491     - fix a sign error so that no slip at shelfice interface works
492     - remove stop for combination non-hydrostatic code and shelfice. That does
493       not mean, that the results are correct, but at least they are numerically
494       stable
495    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
496    o added adjoint exch routined for all exch*3d* routines
497      and updated flow directives
498    
499    checkpoint58o_post
500    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
501      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
502    o change controling S/R for writing pickup file (new S/R do_write_pickup)
503      and clean-up reading/writing of pickup files.
504    o fix local version of read/write pickup (NH part) in rotating_tank/code
505    o simplify EXCH interface:
506     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
507     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
508    o added the regrid package
509    o shelfice:
510     - add a simple boundary layer scheme to reduce noise
511     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
512    
513    checkpoint58n_post
514    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
515       local variable (not in common block).
516    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
517      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
518      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
519        to work with SingleCpuIO.
520    o add "_d 0" to real constant of pkg/cfc subroutines ;
521       update exp. cfc_exemple & tutorial_cfc_offline output files.
522    o multi-threading and IO:
523      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
524        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
525      - barrier before and after reading.
526      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
527      - avoid using MDS_WRITELOCAL for LAND pkg output.
528      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
529        common-block variables ; Allows multi-threading with master-thread IO.
530    o change default MAX_NO_THREADS from 32 to 4 ;
531      and stop cleanly when MAX_NO_THREADS is too small.
532    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
533    
534    checkpoint58m_post
535    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
536       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
537    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
538       keep global_ocean.90x40x15 (for AD testing) with former secondary test
539       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
540    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
541        add MITgcm_tutorials (= code + all the tutorials)
542    o ecco, option to compute cost for total ssh (mean+anom)
543    o consistent with addition of ptracer and ssh in pkg/profiles
544    o profiles: adding ptracer and ssh
545    o testreport: change multi-test output-file name
546      (from output.txt.{name} to output.{name}.txt)
547    o profiles: now ok for mutli-tiles case
548    o seaice: add 4 parameters for different advection schemes for area,
549      (effective) seaice thickness, enthalphy, and snow height. Their default
550      is the standard parameter SEAICEadvScheme
551    o calc_gw:
552     - add cosFacU in zonal viscous flux (harmonic.visc.).
553     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
554       of tutorial_plume_on_slope.
555    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
556    o calc_gw: true flux-form, account for horizontal grid spacing.
557      update rotating_tank results, but not plume_on_slope (affected at
558      truncation level, 11 digits).
559    
560    checkpoint58l_post
561    o calc_gw:
562     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
563     - remove side-drag for now (need to fix it); update plume_on_slope results.
564     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
565    o commit code to make SST/SSS weights spatially variable
566      (based on either variable in-situ or variable initial T/S weights)
567    o pkg/ecco:
568      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
569        now based on horizontally varying weights wthetaLev, wsaltLev
570      * cost_averagesflags now returns year indices in addition to day, month
571      * sflux balance is performed on annual basis
572        (sflxumm, sfluxmm2, bal_sfluxmm)
573      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
574        including separate counting and multipliers
575    o pkg/rbcs
576      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
577    
578    checkpoint58k_post
579    o testreport:
580     - always build in dir. "build" (if not there, mkdir build instead of building
581       & running in input)
582     - run in dir run (if it exists), in build otherwise.
583     - call prepare_run (if input/prepare_run exists)
584     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
585    o pkg/exf modifications to interpolation and rotation routines for more
586       reasonable treatment of North Pole singularity: for tracers North Pole
587       value is set to northernmost zonal-mean value, for zonal velocity it is
588       set to zero, and for meridional velocity it is set to northernmost value.
589    o pkg/exf/exf_check_range.F
590     - add tile index to diagnostics and move stop statement to the very
591       end of the routine.
592    o pkg/diagnostics: (diagnostics_main_init.F)
593      define title of isomorphic variables according to the current config.
594    o pkg/thsice with pkg/seaice dynamics:
595    - fix domain of computation (interior only, required for exf) and do exchanges
596    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
597    o towards a standard way of dealing with multi-threading in MONITOR
598      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
599    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
600       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
601    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
602    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
603    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
604       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
605    o tracer advection:
606     - clean-up and simplify calc_common_factors.F
607     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
608       advection subroutine (but still not used within DST advection S/R)
609    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
610    
611    checkpoint58j_post
612    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
613      from file (collects calls previously in FORWARD_STEP)
614    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
615    o adjoint store dir. adjusted accordingly
616    o genmake2
617      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
618    
619    checkpoint58i_post
620    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
621      on wind stress (SEAICEstressFactor defaults to 1.)
622    o Total number of Timers is finite (<=40): comment out 2 non-essential one
623      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
624    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
625      on CS-grid: no longer loosing mass.
626    o exf & curvilinear-grid: no longer modify longitude xC & xG.
627    o pkg/ggl90: fix sloppy output and fix a bug
628    o pkg/seaice: added SEAICEuseEVPpickup parameter
629      - Set to false in order to start EVP solver with
630        non-EVP pickup files when using SEAICEuseEVP
631      - fix sign error in diffusion in seaice_calc_rhs
632    
633    checkpoint58h_post
634    * Modifications for bottom topography control
635      o replace hFacC by _hFacC at various places
636      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
637      o add non-self-adjoint cg2d_nsa
638      o update autodiff support routines
639      o re-initialise hfac after ctrl_depth_ini
640      o works for 5x5 box, doesnt work for global_ocean.90x40x15
641    * Adding verification for 5x5 box (4-layer) bottom topography control
642    
643    checkpoint58g_post
644    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
645       used for mean seasonal cycle, mean diurnal cycle); add an example
646       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
647    o pkg/ggl90:
648      - add parameter (minimum surface kinetic energy)
649      - fix bug (avoiding division by zero)
650    o couple pkg/thsice to pkg/seaice:
651      - modify advection in seaice to accomodate new scalar fields to be advected
652      - only muliDimAdection scheme work with seaice/thsice
653      - mapping of thsice-variables to seaice-variables, back and forth
654      - does not break the verification experiments, but does not give the
655        desired results either
656    o pkg/seaice
657      - make (default) second order advection a bit less confusing?
658    
659    checkpoint58f_post
660    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
661      to pkg/seaice):
662      - new routines thsice_map_exf and thsice_get_exf provide the interface
663      - add an additional formal parameter to thsice_solve4temp
664    o pkg/exf:
665      - add new fields wspeed, snowprecip (to be able to couple to thsice)
666      - correct Stefan-Boltzmann constant
667      - new parameter for longwave surface emittance
668      - separate some stuff from exf_bulkformulae into new routines  
669        exf_radiation, exf_wind
670      - add new parameters and constants: longwave emissivity for ocean, ice
671        and snow, evaporation parameters over ice
672      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
673        either wind from stress or stress from wind
674    o pkg/thSIce:
675    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
676    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
677       and THSICE_CALC_THICKN
678    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
679    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
680      to make debugging easier.
681    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
682    o pkg/bulk_force:
683      - clean-up comments and parameters ;
684      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
685    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
686      generate new output for test-experiment: aim.5l_cs.thSI
687    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
688      testreport accordingly
689    
690    checkpoint58e_post
691    o SEAICE_CGRID adjoint done
692    o R_STAR adjoint implemented.
693      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
694      * need to sort out init. of h0facc, etc.
695    o Make pkg/profile fully independent of ecco,cost, etc. stuff
696      to be able to use it in pure forward.
697    
698    checkpoint58d_post
699    o upgrade simple test-experiment to tutorial example:
700     step.1: duplicate the experiment and (step.2) will remove the old copy.
701      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
702      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
703      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
704      tutorial_global_oce_biogeo    <- copy of dic_example
705      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
706      tutorial_plume_on_slope       <- copy of plume_on_slope
707      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
708      tutorial_global_oce_optim     <- empty for now (David ?)
709      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
710     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
711    o correct a sign problem in cost_scat.F
712    o obcs and ptracers: fix boundary conditions for advections schemes
713      with larger stencil
714    o thsice adjoint: start
715    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
716      completeness
717    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
718      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
719    o ptracers adjoint:
720      * avoid extensive recomputatations
721      * fix missing re-init. of gptr (missed by TAF)
722    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
723      me to turn off the excessive output to STDOUT that this package produces
724    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
725      and add those terms in Vector-Invariant formulation.
726    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
727      if the control period (xx_hfluxperiod etc) is 0
728    o in profiles pkg, clean routines and fix details
729    o in ecco pkg, reading ssh data:
730      fix problem in case the model does not start at iter0=0
731    o fix mnc-pickup/restart for ptracers
732    o new package prifiles:
733      code to compute profile-based cost by Gael Forget
734      (modifs in ecco, ctrl, autodiff)
735    o Benign bug fix in initialization (spotted by M. Mazloff) of
736      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
737    
738    checkpoint58c_post
739    o adjoint: finish NLFS adjoint and provide reference output in
740      verification/global_ocean.90x40x15/results_ad_nlfs
741    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
742      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
743      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
744      with SEAICE_CGRID defined.
745    o move calendarDumps from "data" to "data.cal" and clean-up the code
746      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
747    o add useEXF & useCAL flags (for now, set in hard-coded way)
748    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
749      (were missing in NH mode, and wrong in quasihydrostatic mode).
750      waiting for Chris updated version of calc_gw to add those CALLs.
751    o fix bug in quasihydrostatic S/R ;
752      add a test for this option: global_ocean.90x40x15.qshyd
753    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
754      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
755    o add on/off flag useOffLine for package OFFLINE
756    o seaice:
757      - modify advection so that it works also on the C-grid
758      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
759        problem in multi-tile runs with C-grid
760      - add flags for clipping ice velocities and/or masking solver forcing
761      - fix drag (ocean on ice) formulation and a bug that caused noise in the
762        C-grid solver
763      - added a few comments to seaice_diffusion.F
764      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
765        are now exclusive)
766      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
767        required re-ordering the code a little:
768       + make DAIRN global variable (defined in SEAICE)
769       + move computation of the viscosities eta and zeta into a new separate
770         routine (because I need to recompute them in seaice_ocean_stress.F)
771    
772    checkpoint58b_post
773    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
774      update output.txt of exp. aim.5l_cs.thSI
775    o various mnc cleanups and improvements:
776      + shrink lookup tables by factor of ~4
777      + better error reporting when running out of lookup space
778      + able to handle longer path/file names (up to 500 chars)
779    o adjoint:
780      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
781      - TBD: "hidden" mom_vecinv recomp. in dynamics
782    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
783     (allow to differentiate between forcing components using new integer flags:
784      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
785     and add new flag to put Dissipation tendency out of Adams-Bashforth.
786    o ecco
787      - enable trend removal from SSH anomaly obs.
788    o adjoint
789      - a fix for PmEpR when #undef EXACT_CONSERV
790      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
791      - try to fix "hidden" recomp. in forward_step for NLFS
792        (NLFS seems broken sometimes after I checked it in)
793    o seaice:
794     - add c-grid version of the dynamic solver:
795       + three new routines that are the c-grid substitute lsr, dynsolver
796         and ostres
797       + put a few fields that were local to dynsolver into global common
798         blocks, so that I can move the computation of stresses etc into
799         seaice_lsr (saves coding but may break the adjoint).
800     - replace more hardwired parameters by runtime parameters
801     - add ice masks that mask the rhs of the implicit solvers where there
802       is no ice (commented out in seaice_dynsolver, because i am not sure
803       if this works properly), eventually this should replace the clipping
804       of ice velocities in seaice_dynsolver to +/-40cm/s.
805    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
806      include it only where its needed
807    o move balancing of fluxes before the call of external_forcing_surf
808    o seaice:
809      - correct units of turning angles (now they are really in degrees)
810      - move computation of GWATX/Y out of main routine into dynsolver
811      - initialize GWATX/Y in seaice_init
812    o Apply mask on Fresh-Water flux (needed for SSH forcing).
813      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
814    o seaice: add runtime flags for turning angles (default to zero)
815    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
816      and trend from exf forcing and ctrl control adjustments
817    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
818      (since checkpoint57x_post)
819    o change the default rotation period to 86164.s = the Earth rotation
820    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
821      and based on a reference stratification. Tested within hs94.cs-32x32x5.
822    o seaice advection: add code for choosing between the default (2nd order
823      central differences) and multiDim advection schemes provided by
824      pkg/generic_advdiff
825    o seaice:
826      - removed all references to SEAICE_GRID.h fields from
827        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
828        (cubed-sphere configuration will change a little)
829      - grid computations in seaice_init are obsolete now.
830      - cleaned up code a little so that is easier to read (hopefully).
831      - added new (better?) discretizations of default advection and diffusion
832        (turn on with SEAICEuseFluxForm)
833      - replace 1 in 3d global fields by kSurface in growth.F
834      
835    checkpoint58a_post
836    o seaice:
837      - bug fix in advect.F
838    o shelfice:
839      - separate shelfice load anomaly from pload (breaks with time
840        dependent forcing), => introduce constant field shelficeLoadAnomaly.
841        Its default is 0., but it may be computed more cleverly from (unknown)
842        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
843        done offline. A good approximation of the pressure load anomaly is
844        necessary to avoid large initial adjustment processes underneath
845        deep-reaching shelfice.
846      - small fix in ISOMIP shelfice_thermodynamics
847      - add more sophisticated thermodynamics of Hellmer (1989), this is
848        now the default
849      - give a few constants more intuitive names
850    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
851      if bulk formulae are used in long integration (especially EmPmR). Turn
852      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
853      if balancePrintMean, the imbalance that is substracted is printed to
854      STDOUT.
855    o fix bug (typo) in obcs_apply_eta.F
856    o add a new package shelfice which enables us to model the circulation
857      underneath shelf-ice with draughts of hundreds of meters.
858     - works
859     - to do: + include improved thermodynamics
860              + check whether kSurfC (from model/inc/SURFACE.h) can be used
861                instead of new field kTopC
862              + can we use topoFile, Ro_surf and existing code in ini_depth.F
863                instead of new field R_shelfIce and new code in ini_depth.F
864                and ini_mask_etc.F?
865              + adjust vertical mixing schemes?
866    o seaice pkg:
867     - add a cpp-flag to include a simple formula for a salinity dependent
868       freezing point of sea water at the surface
869     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
870       meridional stresses are now different (and hopefully correct)
871    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
872       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
873       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
874    o pkg/diagnostics: add options and parameters for regional-statistics
875       diagnostics ; define regions by reading a region-mask from a file
876       (might add other options later)
877    o pkg/bulk_force:
878     - add option and parameters to use AIM surface-flux formulae.
879     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
880       others forcing fields (defined in PARM05, parameter file "data") are loaded
881       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
882     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
883     - use the right EXCH call for uwind,vwind (to work on CS-grid).
884     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
885       and parameters (note: calcWindStress replaces .NOT.readwindstress).
886     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
887    
888    checkpoint58
889    o add "--embed-source" option to genmake2 which, when the supporting
890      tools can be compiled (as determined by genmake2) will turn on the
891      embed_files package which then embeds the entire MITgcm source code
892      (*.[fFhc] + Makefile) used for the build within the executable
893      - requested by CNH but off by default
894      - adds a paltry <9MB to the mitgcmuv executable in most cases
895      - only writes the output when useEMBEDSRC in eedata is true
896    o clean up 3-dim. relaxation codes:
897      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
898      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
899      * Thanks to Tom Haine for testing!
900    
901    checkpoint57z_post
902    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
903      affects output (@ truncation level) of exp. plume_on_slope ; updated.
904    o fix the pickup behavior for obcs in combination with ptracers
905    o fix a bug in ptracers_external_fields_load
906    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
907      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
908    o transfered surface NH pressure to eta field (if exactConserv).
909    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
910         and update lab_sea output.txt file.
911    o completing 3-dim. relaxation code: additional term
912         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
913      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
914      * At compile time, in "EXF_OPTIONS.h" set
915          #define  ALLOW_CLIMTEMP_RELAXATION
916          #define  ALLOW_CLIMSALT_RELAXATION
917      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
918          tauThetaClimRelax3Dim = 15552000.0,
919          tauSaltClimRelax3Dim  = 15552000.0,
920      * 3 cases:
921          1) Use a constant-in-time 3-dim. field
922          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
923          3) Real-time relax. to time-evolving prescribed field
924    o Adding Laplacian-type smoothness constraint on
925      initial and boundary (forcing) controls (ic, bc)
926      * enable at compile-time via
927        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
928      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
929      * Absolute scale somewhat unclear so far
930      * no area weighting was included since no other cost term does so far
931    
932    checkpoint57y_post
933    First step for a NLFS adjoint
934    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
935    o new init. routines for calc_r_star, calc_surf_dr
936    o still need to deal with ini_masks_etc
937    o testreport seemed happy
938    checkpoint57y_pre
939    
940    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
941    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
942    o add new offset feature to offline pkg (plus minor cleanup)
943    o cfc fixes for final year of integration
944    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
945      be in GCHEM_OPTIONS).
946    
947    checkpoint57x_post
948    o fix testreport Pb in multiple test experiment.
949    o cleanup our namelist syntax in verification:
950      - make it more F95 standards compliant (some work still needed)
951      - allows the vast majority of our tests to work with gfortran
952    o Non-Hydrostatic:
953     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
954     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
955    o Allow to apply AB on T,S rather than on AB(gT,gS):
956     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
957     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
958       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
959     - need a "clever" read_pickup to restart from the other AB formulation
960    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
961    o remove some unused variables (reduces number of compiler warnings)
962    o adjoint
963      * Disable useVariableViscosity for adjoint for time being
964        (there are a number of extensive recomputations)
965      * Initialize certain variables needed for adjoint
966    
967    checkpoint57w_post
968    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
969                 fix the singleCpuIO RS version of MDSWRITEFIELD
970       and add a WARNING if using globalFiles=T with multi-processors.
971    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
972      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
973    o tracer advection scheme:
974      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
975       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
976       was not very convenient).
977      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
978       (further tests needed for the implicit DST & Flux-Limiter schemes).
979    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
980      and sRef for convenience, handy, when you want to initialize
981      ptracers in a large domain with a constant non-zero value. Also,
982      untangle ptracers_init.F a little.
983    
984    checkpoint57v_post
985    o change dome exp. to use variable viscosity in side-drag terms.
986    o remove all the files from the cfc_offline test since they are now
987      incorporated into tutorial_cfc_offline which has been producing
988      identical results for a few days of testing
989    o add new parameter: sideDragFactor to enable half-slip-side BC
990      and change side-drag S/R to use viscosity from mom_calc_visc
991      (can switch back by setting sideDragFactor=0.); affects results at
992      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
993       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
994    o vorticity & strain are now computed without masking, to account for
995      no-slip-side BC in variable viscosity calculation ; mask is applied
996      anyway later on, before computing advection/coriolis terms.
997    o modify exp4 to test new obcs support for reading from external files
998      and for passive tracers
999    o fix behavior of ptracers_monitor when monitor output is written to a
1000      netcdf-file; still not independent of monitor.F (writes in the same
1001      file).
1002    o change default value of tRef (put a uniform, meaningful value for ocean
1003      & atmos) and initialize sRef (was missing, as Martin mentioned).
1004    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1005      to be proportional to enstrophy dissipation length.  Thus,
1006       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1007      This is now consistent with Smagorinsky and with the manual.
1008    
1009    checkpoint57u_post
1010    o OBCS and PTRACERS: add open boundary support for passive tracers
1011      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1012        OB-values from file; this is not different from the way theta and salinity
1013        are treated
1014      - however, Orlanski-radiation conditions are not supported, and the model
1015        will stop if you use pTracers and Orlanski at the same time.
1016      - beefed up the rountine obcs_external_fields_load: now only those open
1017        boundary values are overwritten with values from files for which there
1018        are really files, otherwise the OB-fields remain untouched. This makes
1019        it possible to use different OBs at different ends of the domain (as
1020        with EXF)
1021    o reduce number of exch calls in shap_filt (s2).
1022    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1023      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1024    
1025    checkpoint57t_post
1026    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1027    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1028      same truncation, independent of the face number: affects affects several
1029      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1030    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1031      note that biharmonic viscosity + no-slip was not tested in any experiment.
1032    o fix bug in non-linear free-surf side-drag ; generate new output for
1033      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1034    o make mnc honor the writeBinaryPrec flag for most kinds of output
1035    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1036    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1037      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1038    o add brackets in multi-terms sum to get same truncation, independent of
1039      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1040      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1041    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1042      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1043      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1044      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1045      Suggested values of viscosity parameters found in mom_calc_visc.
1046      Many new viscosity diagnostics available.
1047    
1048    checkpoint57s_post
1049    o Add clearing-house for viscosity calculations, mom_calc_visc and
1050      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1051      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1052      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1053      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1054      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1055      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1056      ViscAhStrain and viscAhTension are now retired.
1057    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1058    o In response to JMC's bug report, genmake2 now ignores any soft-links
1059      that it finds in the *current* directory when searching for files.
1060      Soft-links found in any other source directories will still work as
1061      they did before.
1062    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1063      a C routine to unlimit the stack size
1064    o mnc-ify pkg/aim snapshot vars
1065    o mnc-ify pkg/land as requested by Daniel
1066    o various changes to mnc including:
1067      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1068      - output can now be grouped so that all files within a group
1069          change the ITER portion of their names in lock-step together
1070      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1071          and works with both EXCH1 and EXCH2 (but needs more testing)
1072      - writing works for all verification test cases w/ g77 on Linux
1073    
1074    checkpoint57r_post
1075    o make MNC variable initialization happen earlier
1076    o add diagnostics for (almost) each term of the momentum Eq.
1077    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1078    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1079    o remove MINIMAL_TAVE_OUTPUT option ;
1080      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1081    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1082      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1083    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1084    o add time-dependent SST, SSS control
1085    o cost terms in ecco/ modularized (new cost_generic.F)
1086    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1087    o new infrastructure for seaice model vs. obs misfits in seaice/
1088      * driver from the_main_loop.F is seaice_cost_driver.F
1089      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1090      * gradient check in Exp. 6a of natl_box_adjoint/
1091    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1092      (see README file)
1093    
1094    checkpoint57q_post
1095    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1096    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1097      - bug was reported by Jean-Michel and Ian Fenty
1098    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1099      update exp. cpl_aim+ocn output.
1100    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1101      Needed for high-res. runs with large global files
1102      to be able to limit tapelev size
1103    o Changed some tests for adjoint:
1104      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1105      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1106      * global_ocean.90x40x15/ back to default 3-level checkpointing
1107    o Modifications to enable scripted COMMON to MODULE conversion
1108      * verification/OpenAD/code/ has necessary scripts and description;
1109      * converts, compiles and runs successfully;
1110    
1111    checkpoint57p_post
1112    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1113    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1114      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1115    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1116    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1117      (was already the case for dissipation with mom_vecinv,
1118       and also the case for grad.PhiHyd when staggered-timeStep)
1119      This will allow to put dissipation out-off the AB time-stepping.
1120     Unfortunately, affects truncation error. Update output of exp. that "fails"
1121      (cg2d matching number) and leave the others for later: front_relax(10),
1122      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1123      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1124    
1125    checkpoint57o_post
1126    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1127      (2) its ready to be documented during the 20050801 DocFest
1128    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1129      for ideal_2D_oce and lab_sea on linux_ia32_g77
1130    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1131      in global1x1_tot/code_seaice_adj to access indices 32, 33
1132      (worth another tag)
1133    
1134    checkpoint57n_post
1135    o adding precip control xx_precip 32
1136    o adding swflux control xx_swflux 33
1137    o Replacing 10 forcing penalty cost routines by 1 generic.
1138    o Implementing partitioning in time-mean and variable adjustment
1139      for atmos. state.
1140    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1141    o in natl_box_adjoint:
1142      * updated exp 1 to 10
1143        (but does not have time-mean vs. variable split results yet)
1144    o updated global1x1/*_seaice_adj/
1145      to incorporate latest changes
1146    o enable useSingleCpuIO for mdsio vector routines
1147      (applies in particular to tapelev I/O)
1148    o removed inefficient K-loop in all active_file*control*.F
1149    
1150    checkpoint57m_post
1151    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1152      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1153    o pkg/exch2: filling of face-corner halo regions is optional
1154      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1155    
1156    checkpoint57l_post
1157     tag before updating tutorials (pre-release-2)
1158    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1159       for output and interpolation of input fields onto model grid)
1160    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1161       Affects results of exp. rotating_tank ; update output.txt.
1162    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1163          and taking the square quantity and/or using a fraction-weight field.
1164    o fix aim_diagnostics_init.F mate numbers.
1165    o add mnc output capability to diagnostics/diagstat and update
1166      our cvsignore files for the ACSII output generated
1167    
1168    checkpoint57k_post
1169    o lab_sea now uses diagnostics package and provides a suite of
1170      new EXF diagnostics output.
1171    
1172    checkpoint57j_post
1173    o exf
1174      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1175        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1176        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1177      * extended diagnostics output
1178        - now includes all EXF variables
1179        - hs, hl moved to common block
1180        - separate S/R for diagnostics, called after ctrl vector is added
1181        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1182        - EXFqnet contains true Qnet (i.e. includes qsw)
1183      * updated verif. lab_sea, global_with_exf
1184      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1185        to ensure that diagnostics sees a true EXFqnet
1186    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1187    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1188      several times with different frequencies.
1189    o mnc-ify the thsice package as requested by Daniel Enderton
1190      - the monitor--MNC output needs work
1191      - many attributes need to be added (most are currently blank)
1192    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1193      - many attributes need to be added (most are currently blank)
1194    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1195    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1196    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1197      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1198         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1199    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1200     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1201    
1202    checkpoint57i_post
1203    o Diagnostics package was changed: diagnostic allocation is now deactivated
1204      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1205    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1206      add 1rst Order upwind vertical Shear.
1207    o add a quick fix for A/B checkpointing in OFFLINE mode
1208    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1209      end-run around the C/Fortran linking horror in eesup/src/timers.F
1210    o added pkg/runclock: allows user to terminate run based on wall clock
1211    o added non-hydrostatic scaling parameter: nh_am2
1212    o pkg/my82: futile attempt to make results compiler-independent by adding
1213      some "_d 0", etc. no effect.
1214    o for mnc output, fill the 'T' coordinate var with myTime and create a
1215      separate 'iter' variable for iteration count
1216    o pkg/diagnostics:
1217      add new capability: output of Global/Regional & per-level statistics ;
1218      tested against monitor output (including land & thSIce) on various exp.
1219    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1220    
1221    checkpoint57h_done
1222      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1223      data.diagnostics, data.gchem, data.ptracers) is done.
1224    
1225    o pkg/diagnostics: prepare for Global/Regional statistics.
1226      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1227    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1228      and rename it: DIFFERENT_MULTIPLE
1229    
1230    checkpoint57h_post
1231    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1232    o pkg/diagnostics: change output frequency, now in seconds (instead
1233      of Nb of iterations). This requires to change data.diagnostics.
1234    checkpoint57h_pre
1235    
1236    o in mnc, let the user create the output dir if both mnc_outdir_date
1237      and mnc_outdir_num are false
1238    o add fflags() to pkg/diagnostics which allows one to specify, on a
1239      per-file basis, the file precision [default behavior is unchanged]
1240    o added diagnostics to pkg/kpp, including computation of mixed layer
1241      depth based on a temperature/density criterion
1242    o updated verification/natl_box to test the new pkg/kpp diagnostics
1243    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1244    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1245    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1246      not mnc -- this mistake was found by JMC and is now corrected
1247    
1248    checkpoint57g_post
1249    o add Adams-Bashforth 3rd Order time stepping:
1250      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1251      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1252    checkpoint57g_pre
1253    
1254    o make lambda[Theta,Salt]ClimRelax spatially varying
1255      (default remains spatially uniform constant based on tau)
1256    o added new control variables
1257      * init. uVel, vVel, etanN
1258      * lambda[Theta,Salt]ClimRelax
1259    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1260      (suggested by G. Forget)
1261    
1262    checkpoint57f_post
1263    o add parameter "baseTime" = model base time = time at iteration zero
1264      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1265      account for baseTime shift
1266    o move Coriolis arrays from PARAMS.h to GRID.h
1267    checkpoint57f_pre
1268    
1269    o mnc-ifying the seaice package
1270    o introduced an alternative length scale calculation for use in the limiting
1271      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1272    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1273    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1274      as well as grad(vort3).  Made it compatible with both approximate form
1275      for the cubed sphere and full form of these gradients.  Added flag
1276      useFullLeith to select between approximate and full form.  
1277    o add "d0" in getcon.F to reduce differences between compilers/platforms
1278      update output.txt of exp. fizhi-gridalt-hs
1279    o change port_rand funtion to allow to set the seed.
1280    o fix obscure MNC bug involving conversion between reals and integers
1281      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1282        new version is now more standards-compliant
1283    o adjoint-related modifications
1284      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1285      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1286      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1287    
1288    checkpoint57e_post
1289    o Adding eddy stress controls a la Ferreira et al.
1290    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1291    
1292    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1293      update output.txt of exp. fizhi-gridalt-hs
1294    o add more "Z" dimensions and associated coordinate vars to MNC
1295    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1296    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1297      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1298      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1299      months and years.  Requires pkg/cal.
1300    o diagnostics: add pickup functionality
1301      - off by default for backwards compatibility
1302      - current version only uses MDSIO -- MNC will be added
1303    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1304    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1305    
1306    checkpoint57d_post
1307    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1308    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1309      output from the diagnostics package
1310    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1311    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1312      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1313    o add coordinate variables to the MNC output from the diagnostics package
1314    o change MNC-flags default value: true when useMNC=TRUE
1315    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1316      the ability (off by default) to read the grid information using MNC
1317    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1318    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1319    o do snap-shot diagnostics at the middle of the time-interval (instead of
1320      at the end).
1321    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1322      new test for AIM with thSIce + slab-ocean
1323    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1324    o move state variable diagnostics to the beginning of the time step ;
1325      (note: still needs some work specially for snap-shot diagnostics)
1326      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1327    
1328    checkpoint57c_post
1329    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1330    o generate new output.txt files on faulks with g77 & the new -ieee option
1331    checkpoint57c_pre
1332    
1333    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1334      update output.txt of exp. global_ocean.90x40x15
1335    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1336      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1337    o add saltFlux(+File) forcing capability with periodicExternalForcing
1338    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1339    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1340    o improvements for the MNC output from DIAGNOSTICS:
1341      - correct handling of the unlimitied dimension
1342      - all dims now have associated coordinate variables
1343      - variables located at U, V, and Corner ("Z") points are now written
1344        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1345        *all* data points are output
1346    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1347    o added pkg/seaice/seaice_monitor.F
1348    o mdsio_readfield.F can now read files visible only to master MPI process.
1349    o pkg/seaice: some test code for ice-modified ocean stress
1350    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1351      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1352      spurious negative numbers for precipitation and humidity.  Will cause
1353      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1354    o pkg/ctrl/
1355      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1356        May be enabled via doPackDiag
1357      *  introduce z-scaling of
1358         + gradient (doZscalePack) and
1359         + control (doZscaleUnpack)
1360    o pkg/mdsio/
1361      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1362      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1363    
1364    checkpoint57b_post
1365    o simplify options in diagnostics_fill arguments (remove weird combinations)
1366    o fix MNC coordinate variables so that they now contain per-face index
1367      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1368      general, EXCH2 grids are only aligned to a "local" coordinate system
1369    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1370    o Implement instantaneous output within pkg diagnostics:
1371      setting a negative frequency in data.diagnostics produces
1372     "snap-shot" output (as opposed to time-average if freq > 0)
1373    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1374      NOTE: change ptracer diagnostics name: use 2 characters to work with
1375            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1376    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1377      becomes the coordinate variable for the 'T' dimension
1378    o add CF-style coordinate variables to MNC
1379      - just a first cut:  numbers are meaningless on the cubesphere and
1380        missing along the T axis but otherwise it works!
1381    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1382    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1383    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1384      this is based directly on what the model compute, so that the content of
1385      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1386    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1387    o clean up build options files for SunOS, in particular
1388      - remove -traditional from xmakedepend
1389      - change -xarch=v9 to -xarch=native for f77
1390      - restore use of make (not gmake)
1391      - add CC=gcc if using g77
1392    o changes per discussion of AM, JMC, & EH3 today:
1393      - move redundant "grid" variables out of "state" -- in preparation of
1394        creating proper CF-style coordinate variables and in recognition
1395        that any/all grid variables can be easily copied (eg. w/NCO) from
1396        the grid files into any of the other NetCDF files
1397      - *always* output grid variables with MDSIO (this will eventually be
1398        changed)
1399      - output MNC grid file if useMNC is true
1400    o every instance of _END_MASTER() has been found and replaced with
1401      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1402      preprocessors
1403    o re-arrange diagnostics pkg initialisation:
1404     - allow each package to extend the available diagnostics list
1405     - add some checking and fix small problems (multi-threaded, ...)
1406     - new S/R diagnostics_fill (replace fill_diagnostics):
1407       look through the short list of active diag. (instead of the long list)
1408       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1409    
1410    checkpoint57a_post
1411    o this set of changes restores TAMC compatibility
1412      tested for global_ocean.90x40x15 adjoint on trough
1413      (what a pain)
1414    
1415    checkpoint57a_pre
1416    o some modifs in tools/build_options for sunos
1417    o call ctrl_pack for ctrl at end for optimcycle=0
1418    
1419    checkpoint57
1420    o add horizontal bi-harmonic viscosity for vertical velocity
1421      - new parameter viscA4W (defaults to viscA4)
1422      - affects only non-hydrostatic code
1423      - to be done: no-slip lateral boundary conditions
1424    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1425    o implement Implicit Vertical advection for pTracers
1426    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1427      (implemented also for implicit vertical diffusion & advection)
1428    o OBCS: extend application of tracer open boundary conditions
1429      to a strip beyond the boundary of width Olx/Oly
1430    o add call monitor to TAF set of required calls (flow directives)
1431      and include in natl_box_adjoint
1432    o untangle a few ifdefs related to cost, ctrl, autodiff
1433      untangel a few ALLOW_ECCO_OPTIMIZATION
1434    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1435      (theta2, salt2 in ecco_cost_weights)
1436    
1437    checkpoint56c_post
1438    o OBCS as control variables
1439      - update ctrl_ad_diff.list, obcs_ad_diff.list
1440      - remove balance of obcs controls from default
1441      - fix index bug nobcs in ctrl_init
1442      - fix dummy fields filen in ctrl_pack
1443      - add dummy weights for obcs
1444    o lsopt: comment out fort.94 output
1445    o optim:
1446      - remove unnecessary header files
1447      - adjusted namelists
1448      - add xerbla.F to Makefile
1449    o exf:
1450      - multiple modifications of exf_check_range
1451      - unit change in exf_init_runoff from [m/year] to [m/s]
1452    o mdsio:
1453      - i/o-vector change debugLevel from debLevA to debLevB
1454    
1455    checkpoint56b_post
1456    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1457      is called from DO_THE_MODEL_IO
1458      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1459      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1460      - clean up PTRACERS_WRITE_TIMEAVE a little
1461    o add another verification experiment that tests both the cfc-pkg and
1462      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1463      reactive tendencies treated inline with regular timestepping
1464    o testreport previously did a lousy job of comparing small numbers, so
1465      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1466      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1467      testreport.
1468    o ptracers_monitor: bug fix for MPI
1469    
1470    checkpoint56a_post
1471    o GCHEM: finish reorganizating the package
1472      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1473        (introduces another 3D-array for each passive tracer, but only if
1474        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1475        gchemTendency is not needed because the timestep is done separately)
1476      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1477      - GCHEM is now---more or less cleanly---separate from PTRACERS
1478      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1479        so clear to me how that should be done in a general way.
1480    o CFC: improve formatting of output in CFC_ATMOS
1481    o PTRACERS:
1482      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1483        that ALL experiments with ptracers enable can be checked. This makes
1484        GCHEM_MONITOR obsolete.
1485      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1486        monitorFreq
1487      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1488    o add PTRACERS (PTR0[1-5]) to testreport output
1489    o exf_check_range:
1490      * default changed to .TRUE.
1491      * will check values for niter0 if debLevA, every timestep if debLevB
1492      * STOP in exf_check_range if 'out of range'
1493      * range chosen generous to allow for potential extema
1494      TBD: a version with stricter range
1495           permitted range would be runtime parameters
1496    o GMredi:
1497      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1498      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1499      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1500    o GCHEM:
1501      - move call to GCHEM_FORCING_SEP, so that it is now called before
1502        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1503      - introduced a useGCHEM runtime flag and applied it everywhere.
1504      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1505        this flag is now only visible within GCHEM-pkg routines.
1506      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1507        be replaced by a 3D array that is computed before thermodynamics; for
1508        this, the tracer ID iTracer had to be included into the parameter list
1509        of ptracers_forcing
1510      - set up forward_step to call gchem_forcing, that will replace
1511        gchem_forcing_int in ptracers_forcing
1512      - cleaning up
1513    o small cleaning of exch2: remove files that are also in eesupp/src
1514    
1515    checkpoint56
1516    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1517    o mnc: cleanup "full" files--fixes out-of-memory problem
1518    o ECCO-GODAE
1519      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1520      * fully merged and updated from SIO code
1521        windstress sign change affects
1522        - exf_inscal_[u/v]stress
1523        - sign of xx_tau[u/v] adjustments
1524        - signs in cost_scat
1525      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1526      * natl_box_adjoint updated and compressed
1527      * 2-level checkpoint switch added
1528        (tested in EXP. 1 of natl_box_adjoint)
1529      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1530    o SVD
1531      * first complete, non-hacked version for SVD calculations
1532      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1533        performed via direct access files admtlm_vector.it????
1534        (via ctrl_[un]pack)
1535      * optimcycle is used for ARPACK iteration counter
1536        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1537      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1538        and add linear transforms where necessary
1539      * controls are initial/final SST, SSS (can be extended; need to check
1540        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1541    o mdsio: filename info to both stderr, stdout
1542    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1543      from sign change
1544    
1545    checkpoint55j_post
1546    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1547      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1548    o add consistent build directories and .cvsignore files to verification
1549    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1550    o make all subroutines 30 or less characters in length for certain older
1551      compilers to work (a thorough search only turns up two routines in
1552      pkg/ptracers)
1553    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1554      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1555    
1556    checkpoint55i_post
1557    o change arrays for total vertical diffusivity (2.D if explicit,
1558      3.D if implicit) ; each ptracer uses its own background value.
1559    o added mnc/NetCDF output capability to ocn_compon_interf
1560      - added bits to verification/cpl_aim+ocn so that it can run on
1561        ITRDA and other clusters without the mpirun "-wd" option
1562    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1563      configuration
1564    o give MNC the ability to create additional files rather than
1565      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1566      - the default is just less than 2GB which is a practical limit
1567        on many systems
1568    o Compute the non-local term using either KPP vertical diffusivity (=default)
1569       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1570    
1571    checkpoint55h_post
1572    o add verification test "vermix"
1573    o remove all the *_ioinc flags and replace with the single global
1574      outputTypesInclusive flag
1575    o allow to set a vertical profile of vertical diffusivity for T & S
1576    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1577    o useMNC moved from data.mnc to data.pkg
1578    
1579    checkpoint55g_post
1580    o Renaming carbon AD experiments to comply with testreport conventions
1581    o Updating adjoint of Held-Suarez hs94.1x64x5
1582    o Fixing directives for non-ECCO forward_step, after ECCO directives
1583      have been fixed to avoid recomp. of do_oceanic_phys
1584      Works well for global_ocean.90x40x15,
1585      but recomp. issue remains for carbon
1586    o Updating adjoint output for natl_box_adjoint after
1587      pkg/ecco has been modified (see taga c55d_post)
1588    
1589    checkpoint55f_post
1590    o rename to timeave_init_fixed
1591    
1592    checkpoint55e_post
1593    o some delicate re-shuffle of store directives to avoid one
1594      extra call of do_oceanic_physics
1595      affects ecco_the_main_loop.F, do_oceanic_physics.F
1596      checkpoint_lev1_directives.h
1597    o NB: this may break global_ocean adjoint temporarily,
1598      but it is clear how to fix it. Will do later, need this now.
1599    
1600    checkpoint55d_post
1601    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1602    o ecco_cost_weights is modified to 1x1 runs
1603    o modifs to allow observations to be read in as
1604      single file or yearly files
1605    o enable to read exf forcing fields as either
1606      single file or yearly files (flag useExfYearlyFields)
1607    checkpoint55d_pre
1608    
1609    o switch between 2-level and 3-level checkpointing
1610    o add ability of MNC to write local and "partial" (eg. 2D slices where
1611      the full 3D field is never actually stored) arrays to NetCDF files
1612      with the correct (that is, the complete multi-dimensional) set of
1613      array indicies
1614      - used in mom_vecinv() to write the diagFreq output
1615      - tested (demonstrated) in verification/aim.5l_cs
1616    o further mnc-ification
1617      - add verification/lab_sea to the list with mnc setups
1618      - fix undefined mnc v-names in cd_code
1619      - add kpp to mnc output (both snapshot and timeave)
1620    o non-hydrostatic code
1621      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1622        in calc_gw.F
1623      - defaults to viscAh
1624      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1625        friction or Leith) in non-hydrostatic mode, as long as there is
1626        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1627    o pkg/cost
1628      extend simple cost functions to treat time mean quantities
1629      (T,U,V) via cost_accumulate_state from cost_tile
1630    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1631        be 2 times larger than the minimum size the advection scheme requires.
1632        now get a perfect conservation of salt in advect_cs test-exp (updated)
1633    o GGL90 (Gaspar's TKE mixed layer)
1634      - add horizontal diffusion of TKE, requires exchanges in
1635        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1636        default. In OPA there is no horizontal diffusion of TKE but the
1637        mixing coefficients are computed from a horizontal average of TKE of
1638        6 points or so. I think that diffusion has a little more physical
1639        justification.
1640      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1641        was in vain)
1642      - mask tke-variable in ggl90_init
1643    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1644    o fix biharmonic diffusion on CS-grid.
1645    o more obcs stuff
1646      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1647        for reading boundary values. This routine is called from
1648        obcs_prescribe_read
1649      - updated obcs_check
1650      - changed sponge layer relaxation parameter units for days to seconds
1651      - turned off sponge layer by default
1652      - changed argument list of OBCS_CALC to myTime+deltaTclock
1653      - fixed about 35 bugs in obcs_external_fields_load
1654    
1655    checkpoint55c_post
1656    o obcs stuff
1657      - new runtime flags useOBCSprescribe, useOBCSbalance
1658      - re-arranged obcs_calc
1659      - moved exf_getobcs to obcs_prescibe_read
1660        obcs_prescibe_read is called after ORLANSKI stuff
1661        and independent of it (executable can contain all).
1662      - updated obcs_check
1663      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1664        These may be necessary only if tangential velocities are
1665        prescribed at OB, not sure, needs testing.
1666    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1667      which simplifies the calls and passes the ifc check-bounds test
1668    
1669    checkpoint55b_post
1670    o add a 2D scalar, Z location, exchange_2 routine.
1671    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1672      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1673      affects advect_cs results (for the wrong reason): update output.txt
1674    o use a more standard discretization for biharmonic viscosity ;
1675     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1676      affects results of dome set-up: update output.txt
1677    o fix gad_advection.F (CubedSphere part), back to version 1.23
1678    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1679    
1680    checkpoint55a_post
1681    o merged code to
1682      * prescribe/read time-dependent open boundaries
1683        (works in conjunction with exf, cal)
1684      * sponge layer code for open boundaries
1685      * each boundary N/S/E/W now has its own CPP option
1686        (healthy for the adjoint)
1687    
1688    checkpoint55
1689    o up-to-date adjoint of previous breaks
1690      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1691      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1692      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1693      - carbon: * remove tr1-related adjoint verification
1694                * add ptracer as control variable
1695    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1696      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1697    
1698    checkpoint54f_post
1699    o in verification/carbin/ remove experiment related to
1700      ALLOW_PASSIVE_TRACER (array tr1 etc)
1701      code_ad/ input_ad/ results_ad
1702    
1703    o add two new packages
1704      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1705        + subject to optimization (memory)
1706      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1707        + subject to reordering (many GOTOs in the original code)
1708        + so far opps is called for every (i,j) point, and then operates in
1709          the vertical; one may want to reorder the scheme in order operate in
1710          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1711          fields)
1712    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1713      - all verification tests compile and run with linux_ia32_g77
1714      - defaults are compatible with current input files--nothing
1715        should change if you were not previously using MNC
1716      - MNC output has been added in numerous places (eg. timeave)
1717        but there are still a few writes not yet do-able with MNC
1718        (this is in progress)
1719      - flags now allow for either/or/both use of MDSIO and MNC and
1720        documentation will soon follow
1721      - numerous small formatting cleanups for ProTeX
1722    o add version info (via BUILD_INFO.h) to MNC and stdout
1723    
1724    checkpoint54e_post
1725    o add two new packages
1726      - pp81 (Packanowski and Philander, 1981), Richardson number and
1727        stratification dependent mixing
1728      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1729      - these scheme operate in a similar manner as KPP (without ghat, of
1730        course), however there is only one diffusivity that is used for both
1731        temperature and salinity (and passive tracers)ç
1732    o add offline package
1733    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1734      provided by Stephanie Dutkiewicz
1735    o genmake2: add ability to search for C compilers and cleanup test output
1736      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1737    
1738    checkpoint54d_post
1739    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1740    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1741      leading to additional shift by 5 days each year of integration
1742       (i.e. leading to considerable offset over the years)
1743    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1744    o start with no AB and no initial filtering (staggerTimeStep):
1745      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1746    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1747      (external loading & cpl import/export stay in forward_step.F)
1748    o update coupling interface to work with new staggerTimeStep
1749    o change MDSIO ptracers_pickup.
1750    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1751    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1752    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1753    
1754    checkpoint54c_post
1755    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1756      this affects (truncation error) output.txt of test-exp:
1757       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1758    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1759    o change Qnet to always be the net heat flux, (+upward).
1760      affects (truncation error) output of natl_box exp.: updated
1761    o define the max number of passive tracers in PTRACERS_SIZE.h
1762    o start to test mnc routinely in exp0
1763    o add sea-ice loading (sIceLoad) as a new forcing field.
1764    
1765    checkpoint54b_post
1766    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1767       impressive on Altix and Opteron systems)
1768    o diagnostics can now write NetCDF files through the mnc package
1769    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1770    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1771    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1772      affects (truncation error) output of lab_sea & natl_box exp.: updated
1773    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1774    
1775    checkpoint54a_post
1776    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1777    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1778    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1779    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1780      + internal_wave (shift in writing cg2d_ini_res)
1781    checkpoint54a_pre
1782    
1783    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1784      - modified verification/lab_sea and natl_box_adjoint accordingly
1785    
1786    checkpoint54
1787    checkpoint53g_post
1788    o prepare splitting of thermodynamics: store convect.counter in common block
1789    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1790      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1791    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1792    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1793    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1794    o restore adjointability
1795    
1796    checkpoint53f_post
1797    o modifications that affect AIM experiment results (update output.txt):
1798      - no advection of S at top interface Nr (pkg/generic_advdiff)
1799      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1800    o AIM pkg:
1801      - include stability function into surf.Flux derivative relative to Tsurf
1802      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1803    
1804    checkpoint53e_post
1805    o merged cylindrical coord configuration
1806    o added rotating_tank experiment
1807    checkpoint53e_pre
1808    
1809    checkpoint53d_post
1810    o faulks upgraded: re-generate output.txt that have changed:
1811       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1812    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1813    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1814    o added Sadourny discretization of Coriolis
1815      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1816      - re-enabled use of omega3 (useAbsVorticity)
1817    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1818      vector-invariant equations
1819      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1820    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1821      hopefully without new bugs
1822      - still to do: biharmonic friction for non-hydrostatic w
1823    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1824    o regenerated output for global_ocean_ebm (using -ieee)
1825    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1826      of mom_common/
1827      - simple re-arrangement of instructions within computing loop
1828    checkpoint53d_pre
1829    
1830    checkpoint53c_post
1831    o new version of coupler for AIM+thSIce and Ocean models
1832     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1833     - land: change Evaporation of snow
1834     - aim with thSIce: fix bug in snow-precip.
1835    o changes to calc_gw.F
1836     - bug fix for w^2 term near the bottom boundary
1837     - (hopefully) improve the lateral slip boundary condtions for use with
1838        partial/looped cells
1839      - because the bug fix changes two verification experiments anyway (exp5
1840        and plume on slope), change the lateral boundary condition from half slip
1841        to the value of no_slip_sides
1842    o ebm package wasnt quite up to the parallel task. Fixed that.
1843    o Adjoint of EBM package + verification
1844      * TLM OK
1845      * ADM not sufficient accuracy yet (needs further testing)
1846    
1847    checkpoint53b_post
1848    o Commiting new energy balance model to repository
1849      * package is pkg/ebm
1850      * verif. is verification/global_ocean_ebm
1851      * references are in ebm_driver.F
1852    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1853    C        Global thermohaline circulation. Part I:
1854    C        Sensitivity to atmospheric moisture transport.
1855    C        J. Climate 12(1), 71-82
1856    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1857    C        Global thermohaline circulation. Part II:
1858    C        Sensitivity with interactive transport.
1859    C        J. Climate 12(1), 83-91
1860    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1861    C        Destabilization of the thermohaline circulation
1862    C        by atmospheric eddy transports.
1863    C        J. Climate 7(12), 1870-1882
1864    o Will need long integration testing.
1865    checkpoint53b_pre
1866    
1867    o created pkg/mom_common in preparation for variable viscosity code
1868    o renamed and split ini_mnc_io
1869    o pkg/land: only liquid water can diffuse or run-off
1870    o AIM using land: soil wetness availability account for snow
1871    o added printMapIncludesZeros to EEPARMS namelist
1872    
1873    checkpoint53a_post
1874    o restore TAMC compatiility for exf_constants.h
1875      (no usage of _d in .h)
1876    o Additional storing in KPP in an attempt to fix
1877      TAMC problem with adjoint of KPP code.
1878      (no success...)
1879      Identical code works fine with TAF.
1880    o Fixed verification/natl_box_adjoint experiments.
1881      Initial conditions for Experiments 4 and 5 are now
1882      set to "SEAICE_initialHEFF=0", which is more reasonable,
1883      and hence gives results closer to that of Experiment 2.
1884      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1885    
1886    checkpoint53
1887    o stable checkpoint with up to date adjoint
1888      TLM tests only run for 1st grdchk at the moment. Its unclear if
1889      this is a code problem or a problem with resetting code for g_
1890      variables that is being autogenerated wrong.
1891      Otherwise:
1892       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1893       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1894         are both still in chaos following their security messes.
1895    
1896    checkpoint52n_post
1897    o various build (mostly genmake2) changes including:
1898      - ability to build/run more easily within Cygwin and MacOS X
1899      - more complicated Makefiles with a stronger dependence on Gnu Make
1900    o pkg/seaice modifications
1901      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1902        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1903        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1904      - changed proxy for geostrophic velocity and updated
1905        verification/lab_sea/results/* accordingly
1906      - removed ADI dynamic solver from pkg/seaice
1907      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1908        they caused a segmentation fault under certain circumstances
1909      - removed unused field WATR
1910    o bug fix in exf-package:
1911      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1912         now reflect that.
1913    o small fixes in the cal-package:
1914      - set reference date to first of January for the 'model'-calendar
1915      - failing of cal_CheckDate in cal_FullDate now actually results in a
1916        warning
1917    o small modifications in exf-package to increase flexibility:
1918      - change climtempfreeze from a constant to a runtime parameter that
1919        is specified in data.exf_clim (default = -1.9)
1920      - introduce runtime parameter windstressmax (default = 2.0) that is
1921        specified in data.exf
1922    o fix in pkg/thsice:
1923      - update Evap (Tsf changes) to be consistent with Latent heat flux
1924      - maintain snow precipitation unchanged (even if Tsf >=0).
1925     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1926    
1927    checkpoint52m_post
1928    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1929      this does not change any of the results, because myIter=0 in swfrac always
1930      lead to jwtype=2 (the default anyway), but the call makes little sense
1931      as a default
1932    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1933    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1934      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1935    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1936    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1937    o extending useSingleCpuIO option to work with new exch2 I/O format
1938      - old-style, missing-tile I/O is still accessible by defining CPP
1939        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1940    o monitor package can write to NetCDF files and/or STDOUT
1941    o fix re-definition bug in MNC_GRID_INIT_ALL()
1942    o doc/api_reference added
1943      - a framework for building an API Reference Manual using all
1944        the "protex" comments embedded in the code
1945      - see pkg/generic_advdiff, pkg/mnc for examples
1946    o MNC:
1947      - make myThid the last argument for all subroutines
1948      - new default for the grid files: NO halos
1949      - add useMNC and other run-time flags
1950      - separate per-file-group handling of the unlimited dimension
1951      - early initialization of MNC w/ flags read at the eeboot stage
1952        and lookup tables set in initialize_fixed
1953      - write all MNC output to a freshly-created directory
1954    o thermodynamics sea-ice (thsice) is now tested with testreport.
1955    o test exp. advect_cs: use the standard cs32 grid ; update output.
1956    o Added functionality to grdchk:
1957      pick global i,j,k position (or nearest wet) where to perform check.
1958    
1959    checkpoint52l_post
1960    o new land formulation:
1961      a) use ground enthalpy as prognostic variable to ensure exact
1962         energy conservation.
1963      b) account for water temperature and for latent heat of freezing
1964         in all processes (rain, run-off, ground storage)
1965      c) compute surface and ground temperature implicitly.
1966    o aim_v23 modification for new land model:
1967      a) Treat separately land / ocean / sea-ice surface fluxes
1968         to allow implicit computation of land & sea-ice surface temp.
1969      b) add snow precipitation.
1970    checkpoint52l_pre
1971    
1972    o fix problem (when 1 tile is empty) in min/max monitor.
1973    o fix bug in timeAve (u,vZetatave in common block)
1974    o no restoring terms under ice for pkg/seaice
1975    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1976    o bug fix for pkg/seaice pickups
1977    o change MNC call locations and add coordinate attributes
1978    o mask vorticity at the corner ; affects global_ocean.cs output
1979    o fix ini_curvilinear_grid ; test CS experiments with mpi
1980    o aim.5l_cs: modify sea-ice fraction input file ; update output
1981    o exf: Adding simple range check routine for exf fields after read
1982    
1983    checkpoint52k_post
1984    o removed top-level directory "diags"
1985      - we migrated these functions to pkg/timeave a long time ago
1986    o fixed bug introduced in pkg/monitor
1987    o accuracy ctrlprec = 32 insuffient for gradient checks using
1988      averaged fields (I/O via cost_averages)
1989      -> use ctrl.h in active_file*.F to control I/O precision.
1990    o paramter list of CALL ADTHE_MAIN_LOOP
1991    o added initial do_the_model_io to ecco
1992    o set all ...Freq to zero after cost_final
1993      taveFreq, dumpFreq, pChkptFreq
1994    o MAIN and ECCO differentiability restored
1995    
1996    checkpoint52j_post
1997    o fix nchklev in tamc.h for global_ocean...
1998    o Bringing flow and store directives up-to-date
1999    o Really weird thing!
2000      call do_the_model_io from the_main_loop with parameters
2001      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2002      TAF places a faulty re-call of initialise_varia
2003      after cost_final call which should not be there!
2004    checkpoint52j_pre
2005    
2006    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2007      error messages
2008    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2009    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2010      debug output
2011    o modfied mdsio_writefield.F to handle non-global files under exch2
2012    o update AIM Cubed-Sphere exp (aim.5l_cs):
2013      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2014    o update AIM Equatorial Channel exp:
2015      use standard aim_v23 pkg and change the SST fields to be more realistic.
2016    o globalFile now works with exch2
2017    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2018      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2019    o limit timeave output for hi-res integrations
2020    
2021    checkpoint52i_post
2022    o removed CPP_EEOPTIONS.h from verification/*/code
2023    o updated the tiling for global_ocean_pressure
2024    checkpoint52i_pre
2025    
2026    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2027      the old pkg/aim).
2028    
2029    checkpoint52h_pre
2030    o shortened offending lines in exch2_send_rx?.template
2031    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2032    o genmake2: add build & execute test for NetCDF code
2033    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2034      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2035    o added useSingleCPUIO flag to monitor.F and mon_out.F
2036    o added temporary hack for sea-ice dynamics on the cube:
2037      metric terms are ignored and it is assumed that
2038      there is no sea-ice on cube faces 1, 2, 4, and 5.
2039    
2040    checkpoint52f_post
2041    o added exch2 cube routines to pkg/exch2
2042    o modified hs94.cs-32x32x5 to use it
2043    o added new grid files to hs94.cs-32x32x5
2044    checkpoint52f_pre
2045    
2046    checkpoint52e_post
2047    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2048      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2049    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2050      to work with implicit vertical advection and AB ;
2051    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2052    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2053     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2054    checkpoint52e_pre
2055    
2056    o fix bug in impldiff when Nr=1 or Nr=2.
2057    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2058    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2059    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2060      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2061    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2062    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2063    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2064    
2065    checkpoint52d_post
2066    o re-tiled many expts to allow comparison in multi-processor mode
2067      - updated output accordingly
2068      - changed hs94.128x64x5 to use intial T from file rather than use the
2069        random number generator
2070    o add infrastructure in model routines for fizhi and gridalt packages
2071    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2072    o changes to permit hi-res, cubed-sphere, configuration
2073      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2074      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2075      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2076        of surface winds for the cube
2077      (A verification experiment, based on global_ocean.cs32x15, but with
2078       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2079       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2080       complete with example surface forcing files and matlab scripts to look
2081       at the output and compare it with that of global_ocean.cs32x15.)
2082    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2083       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2084       to conform to the common rule.
2085    o check-in the first version of the coupler + interfaces for multi-components
2086       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2087       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2088       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2089       - ocean and atmos. share the same horizontal grid (no interpolation).
2090       - exchanges between component and coupler is done in forward_step
2091    o new verification experiment, cpl_aim+ocn:
2092       coupled ocean - AIM atmosphere on cs32 grid.
2093    
2094    checkpoint52d_pre
2095    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2096    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2097    
2098    checkpoint52c_post
2099    o Fixing OPTIONS files for use of exf:
2100      - ALLOW_ECCO not needed
2101      - ECCO_CPPOPTIONS.h should not be included from
2102        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2103        as has been the case in the past
2104      - All cal/exf related options are currently set in
2105        single header file. Should remain so until we
2106        agree on a consistent new policy.
2107    o Removed all CPP options for cal package.
2108      cal has no more CPP options.
2109    o modified STOREs in GAD_ADVECTION
2110    o corrected key comp. for passkey
2111    
2112    checkpoint52b_post
2113    o new version: "thsice" of thermodynamic sea-ice pkg:
2114     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2115     - modify fluxes but do not change theta directly;
2116     - light cleaning of bulk_force pkg (still needed with thsice).
2117     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2118       + output_thsice.txt to test thsice & bulk_force pkgs.
2119    o put back grid & coriolis monitor output.
2120    checkpoint52b_pre
2121    
2122    o call "do_the_model_io" at the beginning (=> dump initial state)
2123    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2124    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2125      (need info on NUMBER_OF_PTRACERS)
2126    o missing PTRACERS headers in some routines
2127    o default tamc.h in pkg/autodiff supposed to crash
2128      to ensure proper customization
2129    
2130    checkpoint52a_post
2131    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2132      - moved surfaceTendencyTice from pkg/seaice to main code
2133      - subroutine FREEZE_SURFACE now limits only surface temperature
2134        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2135        => new output.txt for global_ocean.cs32x15 & global_with_exf
2136      - keep the old version of FREEZE for backward compatibility;
2137        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2138      - corresponding modifs for TAF directives
2139    o added surface flux output variables to TIMEAVE_STATVARS
2140    o time-averaged output for pkg/ptracers
2141    o fix problem with ECCO-related divided adjoint
2142      snapshot file was missing some ad-variables,
2143      but no warning issued by TAF
2144    
2145    checkpoint52a_pre
2146    o some bug fixes for #undef REAL4_IS_SLOW
2147    
2148    checkpoint52 = ecco_c52_e35
2149    o after testing adjoints of checkpoint51u_post
2150    
2151    checkpoint51u_post
2152    o this is the post-merge tag of the ecco-branch
2153      (needs another clean checkout and re-testing)
2154    o various natl_box_adjoint configs and results
2155      but no input fields
2156    o obcs adjoint not yet merged!
2157    o adding ECCO global 1x1 and 2x2 degree configs
2158    o updated/extended some store directives for seaice
2159    o pkg/ecco now containes ecco-specific part of cost function
2160    o top level routines the_main_loop, forward_step
2161      supersede those in model/src/
2162      previous input data.cost now in data.ecco
2163      (new namelist ecco_cost_nml)
2164    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2165    
2166    checkpoint51t_post
2167    o this is the pre-merge tag of the ecco-branch
2168    
2169    checkpoint51s_post
2170    o cleanup: removed various obsolete #define-s
2171    o pkg/grdchk
2172      - renamed 'ph-grd 3' to 'grad-res'
2173      - merged from ecco-branch
2174        (remaining bug fixes for obcs gradient checks)
2175      - additional high-precision output for testreport
2176        (grep for 'precision_grdchk_result')
2177    
2178    checkpoint51r_post
2179    o cleaned up or removed CPP_OPTIONS.h files
2180    o updated results for some of the tests to reflect the new
2181      optfiles (-ieee: -O0 instead of -O3)
2182    
2183    checkpoint51q_post
2184    o cd_code:
2185      - moved cd_scheme.F -> cd_code_scheme.F
2186      - separate read_checkpoint from cd_code_ini_vars.F
2187      - separated cd_code part from write_checkpoint
2188      - updated AD_SOURCE, generated .flow
2189      - added CD_CODE_VARS.h to the_main_loop
2190      - Moving cd_code specific store dir.s to pkg/cd_code
2191    o ctrl package totally restructured
2192      - pack/unpack now optional and decoupled from
2193        xx_/adxx_ I/O
2194      - ctrl_pack/unpack cleaned
2195        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2196      - confined inclusion of AD_CONFIG.h to where necessary.
2197    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2198    
2199    checkpoint51p_post
2200    o create initial cd_code package
2201      - WARNING: the initialization of fields within packages
2202        is broken because INI_FIELDS (where READ_CHECKPOINT is
2203        called) is called *before* PACKAGES_INIT_VARIABLES.
2204        This seems to be backwards since
2205        1) its important to initially zero the entire field including
2206           the "halo" region
2207        2) zeroing needs to be done *before* reading pickup info
2208           and the pickup call might or might not happen in any
2209           particular run
2210      - this needs an overhaul for R2
2211    o cleanup verification/*/code/GMREDI_OPTIONS.h
2212    o cleanup testreport
2213    
2214    checkpoint51o_post
2215    o bringing AD-related verif's up to date with genmake2
2216      - carbon/
2217      - global_ocean.90x40x15/
2218      - hs.94.1x64x5/
2219      - (front_relax/ )
2220    o (more) consistent directory structure for AD-related verif.'s
2221    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2222    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2223    o bug fix in find_alpha.F for MDJWF:
2224      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2225        change rho -> rho-rhoConst
2226      - replace call find_rho to find_rhonum
2227    o initialisation of rFlx extended to full array (required by TAF)
2228      and shifted to thermodynamics
2229    o removed PTRACERS.h in ptracers routine
2230    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2231    o Correcting initialisations for fVerU, fVerV.
2232    o helping TAF to recognize dependency on kUp for
2233      fVerU, fVerV
2234    o Replacing delZ by delR in pkg/ctrl/
2235    checkpoint51o_pre
2236    
2237    o undid all of cp51 pending some cleanups and discussion
2238    o added the [#include "AD_CONFIG.h"] statement to all files that need
2239       it for adjoint/tl #defines
2240     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2241     o removed tools/genmake since it no longer works
2242    
2243    checkpoint51n_post
2244    o modifications to make FREEZE flux visible to pkg/kpp
2245      - moved surfaceTendencyTice from pkg/seaice to main code
2246      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2247      - subroutine FREEZE now limits only surface temperature
2248        (this means new output.txt for global_ocean.90x40x15,
2249         global_ocean.cs32x15, and global_with_exf)
2250    o added surface flux output variables to TIMEAVE_STATVARS
2251    
2252    checkpoint51n_pre
2253    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2254    o added [#include "AD_CONFIG.h"] to all files that use the following
2255      defines:
2256      - ALLOW_ADJOINT_RUN
2257      - ALLOW_TANGENTLINEAR_RUN
2258      - ALLOW_ECCO_OPTIMIZATION
2259    
2260    checkpoint51m_post
2261    o incorporating changes to get TAMC/TAF working in genmake2
2262      - added new TAMC/TAF targets to the Makefile
2263      - various cleanups related to package handling
2264      - these changes should have no impact on the forward model
2265    
2266    checkpoint51l_post
2267    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2268     - faster algorithm for cal_addtime.F
2269     - higher precision arithmetic, where needed
2270     - pkg/exf *startdate variables changed from calendar date to
2271       model integration time
2272    
2273    checkpoint51l_pre
2274    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2275    o enable to apply restoring on S & T only in a latitude band.
2276    o update output (external_forcing_surf modif. change truncation errors)
2277       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2278    
2279    checkpoint51k_post
2280    o change default to: useNHMTerms=.FALSE.
2281     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2282       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2283     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2284        exp1, ideal_2D_oce
2285     - change data file of oceanic exp (leave the results unchanged for now)
2286       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2287    o set gravitySign automatically according to the vertical coordinate used
2288      (and change sign: back to "logical" value: +1 when R increases downward)
2289    o added an include barrier to the default CPP_OPTIONS.h and
2290      removed the #include "PACKAGES_CONFIG.h" from it
2291    o fix a bug in mom_fluxform (from chk51j_post)
2292    
2293    checkpoint51j_post
2294    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2295    o adjusted some flow directives (dynamics, thermodynamics)
2296    o added cubed-sphere case to test cost function
2297    o heckpoint_lev?_directives.h now include
2298      pkg-specific directives, whenever those are enabled.
2299    o Moving pkg-specific flow directives to corresponding pkg
2300      Moving pkg-specific differentiation list to corresponding pkg
2301      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2302      ---> conventions are
2303           - pkg_ad.flow
2304           - pkg_ad_diff.list
2305           - pkg_ad_check_lev?_dir.h
2306    
2307    checkpoint51i_post
2308    o merge of the branch-genmake2
2309      - knowingly breaks the older genmake
2310      - automatic generation of all ALLOW_${PKG_NAME} defines
2311      - new testreport supersedes older testscript
2312    o large number of package inclusion and header cleanups
2313    checkpoint51i_pre
2314    
2315    o new output for adjoin of global ocean vector invariant
2316    o fix for checkpoint of thermodynamic seaice and bulk_force
2317    o Steph gchem various cleanups
2318    
2319    checkpoint 51h_pre
2320    o fixed some single quotes
2321    o modify gchem pkg to be more versatile
2322    o modifications to clean up dic pkg
2323    o add pkg/cfc
2324    
2325    checkpoint51g_post
2326    o provide links for ARPACK and ADM*TLM
2327    o start removing verification/vero/
2328    o update AD-related stuff
2329      (in particular some IF-statements in model/src/ routines)
2330    o adding to verification/global_ocean.90x40x15/ adjoint of
2331      vector invariant setup
2332    
2333    checkpoint51f_post
2334    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2335    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2336      of tracer Green's fucntions for ocean inversion project.
2337    
2338    checkpoint51f_pre
2339    o Added on-the-fly spatial interpolation capability
2340        "USE_EXF_INTERPOLATION" to pkg/exf.
2341      - This is a temporary Cartesian-grid hack until
2342        the super-duper ESMF coupler becomes available.
2343      - See verification/global_with_exf/README for usage example.
2344      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2345        flags and modified pkg/seaice accordingly.
2346    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2347        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2348        non-local transport term.
2349    
2350    checkpoint51e_post
2351    o pkg/mom_vecinv:
2352      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2353      - add time-ave diagnostic of vorticity advection.
2354    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2355    o atmospheric geopotential: - include water vapor effect;
2356                                - use p^kappa in p* scaling.
2357    o land pkg: read initial state from files.
2358    o AIM : add stratospheric drag in the upper level
2359    
2360    checkpoint51d_post
2361    o change function ILNBLNK (=> last non-blank char.) to return zero
2362      (instead of the string length) when the string. char is empty
2363    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2364    o modif's to restore TAMC compatibility
2365      - avoid "_d" constructs in PARAMETER declarations
2366      - avoid interrupting lines by comment lines
2367    o Use cluster local disks for purely local I/O
2368      vs. globally visible disks needed for ctrl stuff
2369      (merged from ecco-branch)
2370      - new active_file_loc... and mdsio_..._loc routines
2371      - affected packages: autodiff, ctrl, grdchk, mdsio
2372    
2373    checkpoint51c_post
2374    o introducing integer flag debugLevel
2375      - debLevZero: suppress all output
2376      - debLevA: standard
2377      - debLevB: equivalent to current debugMode=.TRUE.
2378    o introducing pathname variable mdsioLocalDir for mdsio
2379      that can be specified at runtime
2380      (relevant for cluster I/O to local disk)
2381    `
2382    >>>checkpoint51b_post
2383    adjoint of ptracers
2384    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2385    o extended state in checkpoint_lev?, etc.
2386    o alternative ctrl/cost with tr1 or ptracer
2387    o new comlev1_bibj_ptracers
2388    o new ptracers.flow
2389    o made ptracers_forcing same as external_forcing_s
2390    o added verification for adjoint with ptracers
2391      - adm. grdchk fail so far
2392      - tlm. grdchk OK
2393      - checked tapelev/comlev recomputations: OK
2394    <<<checkpoint51b_pre
2395    
2396    checkpoint51a_post
2397    o added code for biogeochemistry package
2398      - new pkgs: dic, gchem
2399      - new subroutine in ptracers
2400    o modify code for biogeo packages
2401      - in model/src and pkg/ptracers
2402    
2403    checkpoint51
2404    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2405      - autodiff, ctrl, exf, grdchk, seaice
2406      kept separate packages
2407      - cost, ecco, obcs
2408    o updating verification/internal_wave, verification/lab_sea
2409      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2410    
2411    checkpoint50i_post
2412    o Preparing next differentiable checkpoint and sync
2413      of MAIN vs. ecco-branch
2414      - 1st step: this one is differentiable
2415      - 2nd step: next(! not this) checkpoint will have updated packages
2416                  from ecco-branch)
2417    
2418    checkpoint50h_post
2419    o new package "land": provide surface BC for AIM.
2420    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2421    o AIM: use true log-P extrapolation for near surface temp (= as in
2422        F.Molteni paper) ; update aim.5l_cs output.
2423    o New variable in PARM03 for more flexible pickups
2424    o somewhat cleaned package initialisation sequence for
2425      ctrl/ cost/ ecco/ in packages_... routines
2426    
2427    checkpoint50g_post
2428    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2429      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2430      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2431        made the default because of faster convergence than ADI
2432    
2433    checkpoint50f_post
2434    o exf totally restructured
2435      - replaced all exf_set_ routines by one generic exf_set_gen.F
2436        and made sure it's still differentiable
2437      - split exf_getffields.F into new exf_bulkformulae.F
2438      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2439      - updated adjoint/makefile and relevant verif. accordingly
2440    
2441    checkpoint50f_pre
2442     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2443          + change Evap over land. (update aim.5l_cs output)
2444     o added missing .cvsignores and made uniform across expts
2445     o changed configuration of tidal_basin_2d expt
2446     o added pkg/debug functions for tracing code in fatal crashes
2447     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2448     o new fn in pkg/monitor to stop model if solution grows too big
2449     o removed lots of single quotes from comments
2450    
2451    checkpoint50e_post
2452    o make KPP work with PTRACERS
2453     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2454       nearly a copy of kpp_transport_s
2455     - there is no analogue to SurfaceTendencyS, so I have to use
2456       gPtr(of the surface layer) instead
2457    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2458    checkpoint50e_pre
2459    
2460    checkpoint50d_post
2461    o change kpp output from multiple-record state files to single-record state
2462      files analogous to write_state.F
2463    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2464      analogous to the cg2d-related output.
2465    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2466      so that writing to internal file fn (with length 512) fails.
2467    checkpoint50d_pre
2468    
2469    checkpoint50c_post
2470    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2471    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2472    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2473    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2474    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2475    
2476    checkpoint50c_pre
2477    Merging from release1_p13:
2478    o bug fix for pkg/seaice dynamic solver
2479    o Added SEAICE_initialHEFF to pkg/seaice
2480    
2481    checkpoint50b_post
2482    o store u*,v* in gU,V instead of in guNm1,gvNm1
2483    o in order to put the momForcing out of the Adams-Bashforth:
2484      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2485      to timestep.F
2486    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2487    o re-generate output for highly sensitive test-exp:
2488       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2489    
2490    checkpoint50b_pre
2491    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2492    o corrected CPP option mismatch in exf_Bulk... functions for case
2493      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2494    
2495    checkpoint50a_post
2496    o Bug fix for merging between c50 and KPP.
2497      ikey was passed from thermodynamics to kpp_calc via
2498      common block rather than being recomputed in kpp_calc,
2499      in contradiction with new key itdkey.
2500      New key ikppkey created, and tamc.h headers updated.
2501    
2502    checkpoint50
2503    - 2nd step of merge with ecco-branch:
2504      merge changes in ecco-branch back into main trunk
2505    - bug fix in find_alpha
2506    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2507    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2508    - merged some sliced AD support routines
2509    
2510    checkpoint49
2511    merged from ecco-branch:
2512    o exf:
2513      - Enable initialisation of forcing fields to constant
2514        (runtime) values.
2515      - in exf_getffields.F
2516        Reduce i-/j-loop to interior domain, discarding overlaps.
2517        That also fixes wrong TAF-key computations for key_1, key_2
2518        with bulf formulae.
2519      - exf_init.F modify #ifdef for exf_init_evap
2520      - exf_getffieldrec.F, ctrl_getrec.F
2521        The following INT-usages are not safe:
2522          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2523          fldcount = int(fldsecs/fldperiod) + 1
2524        and were modified.
2525    o autodiff: checkpoint_lev...
2526      - updated storing for bulk formulae (some arrays were missing)
2527      - added state for seaice package
2528      - synchronized with main branch
2529    o DIVA:
2530      Modif.s in
2531      - the_main_loop.F
2532      - the_model_main.F
2533      and added cost_final_restore.F cost_final_store.F
2534      o With these changes, it is possible to fully separate
2535        the first forward run to compute the cost function (mdthe_main_loop)
2536        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2537        into separate model executions.
2538        This enables better tuning of DIVA to given queue sizes.
2539      o Loss of cost function value in consecutive DIVA runs is
2540        fixed by storing to 'costfinal' file.
2541      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2542        beginning/end of adjoint integration is accounted for.
2543      The current changes apply to TAF-1.4.26.
2544      TAF has one remaining bug, requiring one manual change
2545      (see MITgcm manual).
2546    o cal: synchronized between MAIN and ecco-branch
2547    
2548    checkpoint48i_post
2549    o Changes to restore differentiability of code w.r.t. previous tag
2550      (mostly adding new routines to make list and replacing
2551      pressure by totPhiHyd).
2552    o Updated and merged grdchk package
2553      - has both ADM and TLM checks
2554      - works for single- and multi-proc.
2555      - output cleaned
2556      - worked successfully for parallel DIVA
2557    o genmake:
2558      - Adding -platform=SP4
2559      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2560    o Modif. for DIVA:
2561      ctrl_unpack should not be called in intermediate DIVA interval.
2562      (similar thing would apply for active files such as
2563      tbar, sbar, psbar, which should not be reinitialised;
2564      only relevant for ecco-branch)
2565    
2566    checkpoint48h_post
2567    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2568    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2569    o Added SEAICE_initialHEFF to pkg/seaice
2570    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2571    
2572    checkpoint48g_post
2573    --- EOS:
2574    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2575      store total Potential in totPhyHyd for diagnostics & EOS.
2576    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2577    --- Pressure/geopotential gradient:
2578    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2579    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2580      ( changes results of global_ocean_pressure )
2581    o NLFS + z-coord.: add eta*Rho' contribution.
2582    o accurate phiHyd when using interface-W at the middle between 2 centers
2583     ( changes results of ideal_2D_oce )
2584    o includes r* 2nd term in potential gradient.
2585    
2586    checkpoint48f_post
2587    Merging from release1_p12:
2588    o Modifications for using pkg/exf with pkg/seaice
2589      - improved description of the various forcing configurations
2590      - added basic radiation bulk formulae to pkg/exf
2591      - units/sign fix for evap computation in exf_getffields.F
2592      - updated verification/global_with_exf/results/output.txt
2593    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2594      (SBO) core products, including oceanic mass, center-of-mass,
2595      angular, and bottom pressure (see pkg/sbo/README.sbo).
2596    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2597      to avoid negative values in shallow regions.
2598      - updated verification/natl_box/results/output.txt
2599      - updated verification/lab_sea/results/output.txt
2600    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2601    o Added useSingleCpuIO option (see PARAMS.h).
2602    o Updated useSingleCpuIO option in mdsio_writefield.F to
2603      work with multi-field files, e.g., for single-file pickup.
2604    o pkg/seaice:
2605      - bug fix in growth.F: QNET for no shortwave case
2606      - added HeffFile for specifying initial sea-ice thickness
2607      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2608    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2609      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2610    o pkg/seaice:
2611      - adjoint-friendly modifications
2612      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2613    
2614    checkpoint48e_post
2615    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2616    o dynamics: change definition of computational domain & adapt mom_fluxform
2617      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2618    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2619        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2620        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2621        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2622        inverted_barometer solid-body.cs-32x32x1
2623      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2624    
2625    checkpoint48d_post
2626    o in preparation for r*:
2627     a) use pre-computed gradient of hydrostatic potential:
2628        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2629     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2630        => affects results of glob_oce_pressure (different truncation error)  
2631      update output.txt of ideal_2D_oce & global_ocean_pressure
2632    
2633    checkpoint48d_pre
2634    o in preparation for r*:
2635      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2636      pass the 2 comp. of the grad. as arguments to momentum S/R.
2637      but for the moment, only used if it does not change the results.
2638    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2639    
2640    checkpoint48c_post
2641    Modifications in treatment of initial flux forcing controls
2642    to avoid extra storing of flux fields.
2643    
2644    checkpoint48c_pre
2645    o Added tidal_basin_2d experiment (currently 1D!)
2646    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2647    
2648    checkpoint48b_post
2649    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2650     (modification to pressure gradient not yet implemented)
2651    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2652      (for U & V) that are used for vertical advection of momentum.
2653    
2654    checkpoint48a_post
2655    o In preparation for r*, use temp. array to compute vertical transport
2656       in flux-form momentum pkg. => change results of few test-exp.
2657      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2658                        lab_sea, natl_box & plume_on_slope
2659    
2660    checkpoint48
2661    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2662    
2663    checkpoint47j_post
2664    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2665    o moved adexch from forward_step to addummy_in_stepping
2666    o added exch in ctrl_map_...
2667    o aveFreq.=0. at end of cost_final to avoid overwrite in
2668      reverse checkpointing loop
2669    o Yet more changes in gmredi:
2670      * adgmredi_calc_tensor
2671        avoiding all recomputation of gmredi_slope_limit
2672      * adgmredi_x/y/rtransport
2673        added flag for excessive storing to avoid recomp. of
2674        u/v/rtans, dTdx/y/z
2675        -> this is not really necessary and very memory-consuming
2676      * adgmredi_slope_psi:
2677        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2678      * gmredi_slope_limit
2679        re-activated full calculation of taperfct for case 'ac02'
2680    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2681    
2682    checkpoint47i_post
2683    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2684    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2685      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2686    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2687    o gmredi: fix few bugs.
2688    
2689    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2690    This will be a good checkpoint to plug into the ecco-branch.
2691    o few modif.'s to get latest version adjointed
2692      (mainly kick out code in ini_linear_phisurf)
2693    o modif's to run adjoint with exactConserv
2694    o case GM_BOLUS_ADVEC should be cleaned
2695      S/R gmredi_slope_psi should be cleaned
2696    o verification/carbon now has exactConserv=.TRUE.
2697    
2698    checkpoint47g_post
2699    o time-average AIM output: becomes independent from statvars time-average
2700      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2701    o After TAF bug fix:
2702      Tested adjoint of gmredi package.
2703      Tests were done with checkpoint47 rather than with latest
2704      checkpoint47f_post since the latter is broken for the adjoint
2705      verification/carbon/ contains both ADM and TLM gradient checks.
2706    Here they are, before they get changed/lost/stolen.
2707    Mostly modif.'s to fix numerical sensitivities.
2708    Gradient checks OK for
2709    - GM_taper_scheme:
2710      * clipping
2711      * ac02
2712      * linear
2713      * glw91
2714      * dm95
2715      * ldd97
2716    - GMREDI_OPTIONS:
2717      * GM_VISBECK_VARIABLE_K
2718      * GM_NON_UNITY_DIAGONAL
2719      * GM_EXTRA_DIAGONAL
2720      * GM_BOLUS_ADVEC
2721    in conjunction with data.gmredi parameters to be checked in
2722    in a few minutes under verification/carbon/code/
2723    
2724    checkpoint47f_post
2725    Merging from release1_p10:
2726    o modifications for using pkg/exf with pkg/seaice
2727      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2728        and SEAICE_EXTERNAL_FLUXES
2729      - pkg/exf CPP options EXF_READ_EVAP and
2730        EXF_NO_BULK_COMPUTATIONS
2731      - usage examples are Experiments 8 and 9 in
2732        verification/lab_sea/README
2733      - verification/lab_sea default experiment now uses
2734        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2735    
2736    checkpoint47e_post
2737    o created a tag prior to creating a branch
2738    
2739    checkpoint47d_post
2740    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2741      at the bottom boundary had an erroneous half slip boundary condition
2742    o added bottom drag and no slip boundary condition capabilities to
2743      oceanic pressure coordinates code
2744    o added new verification experiment global_ocean_pressure, this experiment is
2745      also described in the tutorial section of the manual
2746    checkpoint47d_pre
2747    
2748    checkpoint47c_post
2749    o Added a verification experiment for a global cubed-sphere ocean run
2750      -  verification/global_ocean.cubed32x32x30
2751      -  uses pkg/therm_seaice and pkg/bulk_forcing
2752    
2753    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2754    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2755      when using P-coordinate; only implemented for atmospheric config.
2756    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2757      NOTES: requires option NONLIN_FRSURF to be "#define".
2758    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2759    
2760    checkpoint47b_post
2761    Merging from release1_p9:
2762    o pkg/seaice
2763      - removed GOTO's and added taf directives
2764      - double precision constants to reduce the g77 (Linux)
2765        to F77 (SGI) differences reported in release1_p8
2766    o tools/genmake
2767      - added SGI options
2768    o verification/testscript
2769      - updated to that of checkpoint47a_post
2770    o verification/global_ocean.90x40x15/input/eedata
2771      - modified for SGI f77 compatibility
2772    o verification/lab_sea
2773      - added description of sea-ice model
2774      - added missing matlab routines
2775      - added test of thermodynamics parallelization
2776    
2777    checkpoint47a_post
2778    o new pkg: aim_v23
2779     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2780       for now, keep the same surface forcing as before.
2781     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2782     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2783     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2784    o add diagnostic of surface correction term in monitor output
2785    
2786    o bulk_force and therm_seaice
2787    - Two packages:  bulk_force (Bulk forcing)
2788      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2789    - Earlier integration from Stephaine Dutkiewicz
2790      and Patrick Heimbach.
2791    - Two ifdef statements for compile time,
2792       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2793    
2794    checkpoint47
2795    differentiable version of checkpoint46n_post
2796    o bug fix in quasihydrostaticterms
2797    o * "clean" adjoint code (in terms of extensive recomputations)
2798        can now be obtained for all GMREDI options (i.e. for
2799        - GM_VISBECK_VARIABLE_K
2800        - GM_NON_UNITY_DIAGONAL
2801        - GM_EXTRA_DIAGONAL
2802        - GM_BOLUS_ADVEC )
2803      * However, wrong gradient check problem remains unsolved.
2804      * New CPP options have been introduced for different
2805        tapering schemes
2806    o external_fields_load now part of differentiation list
2807    o pressure needs multiple storing;
2808      would be nice to have store_pressure at beginning or
2809      end of forward_step, e.g. by having phiHyd global (5-dim.)
2810      (NB: pressure is needed for certain cases in find_rho,
2811      which is also invoked through convective_adjustment).
2812    o recomputations in find_rho for cases
2813     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2814    o #define ATMOSPHERIC_LOADING should be differentiable
2815    o ini_forcing shifted to begining of initialise_varia
2816    o Incorporating QNVS line search routines into MITgcm
2817      (this is separate code, and therefore not under pkg)
2818      lsopt/, optim/
2819    o Updated verification/carbon/
2820      - #define GM_VISBECK_VARIABLE_K
2821      - GM_taper_scheme    = 'ldd97'    
2822    
2823    checkpoint46n_post
2824    Merging from release1_p8:
2825    o verification/natl_box:
2826      updating new external_fields_load routine
2827    o New package: pkg/seaice
2828      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2829      The sea-ice code is based on Hibler (1979-1980).
2830      Two sea-ice dynamic solvers, ADI and LSR, are included.
2831      In addition to computing prognostic sea-ice variables and diagnosing
2832      the forcing/external data fields that drive the ocean model,
2833      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2834      The implied surface heat flux is then stored in variable
2835      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2836      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2837      non-local transport term.  Because this call precedes model
2838      thermodynamics, temperature under sea-ice may not be "exactly" at
2839      the freezing point by the time theta is dumped or time-averaged.
2840      N.B.: fairly large differences in accuracy occur across
2841            different platforms/compilers; comparison between
2842            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2843            generated output gives:
2844       T           S           U           V
2845      C D M    c        m  s        m  s        m  s        m  s
2846      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2847      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2848      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2849    
2850      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2851    o GAD:
2852      - generated new common blocks to account for call of
2853        same gad routines with differing traceridentities
2854        (needed to modify tracerIdentity indices in GAD.h)
2855      - generated separate common blocks for case useCubedSphereExchange
2856        (Department of Futurology)
2857      - parameter lists to gmredi_?transport: added tracerIdentity
2858      - added new key indices to tamc.h
2859    o external_fields_load:
2860      - added this routine to TAF list
2861      - needed to make some common blocks global and additional storing
2862        along the same lines as exf package (checkpoint_lev?_directives.h)
2863    o exf:
2864      updated external forcing package
2865      - bug fixes carried over from ecco-branch
2866        (missing OBCS_OPTIONS.h in two routines)
2867      - enable easy to use "no forcing".
2868      - added exf I/O for atmospheric loading
2869      - added exf I/O for runoff data
2870      - transfered scaling between exf <-> MITgcm to exf namelist
2871    o Adding new verification experiment global_with_exf.
2872      This verification experiment is almost identical to the
2873      global_ocean.90x40x15 experiment, except that it uses
2874      the exf (and cal) package instead of the
2875      external_fields_load routine (cf README file).
2876    
2877    checkpoint46m_post
2878    o modified testscript to return -- when there are no lines of "%MON" output
2879    o added new flag "quasiHydrostatic" for QH mode
2880      and new routine quasihydrostaticterms()
2881    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2882      New routine: mom_u_coriolis_nh()
2883    o fixed sign of non-hydrostatic metric terms in u and v equations.
2884      Depend on correct sign of gravitySign.
2885    o added work.pc* to .cvsignore in aim directories using ifc
2886    o introduced flag for controllin non-hydrostatic metric terms
2887    o removed gravitySign from PARM04
2888    o switched to g77/ifc from pgf77 in aim experiments
2889    
2890    checkpoint46l_post
2891    o made convective adjustment work with pressure coordinates:
2892     - changed the direction of k-loop in convective_adjustment.F for the
2893       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2894     - adjusted the reference pressure k-index in convective_adjustment.F
2895     - adjusted the convection condition in convect.F (in analogy to
2896       calc_ivdc.F)
2897     - convective_adjustment no longer computes anything on the halos
2898     - removed the warnings about negative salinity from find_rho.F and
2899       find_alpha.F; instead the new routine look_for_neg_salinity, called
2900       at the beginning of find_rho, find_alpha, and find_beta, does a
2901       check of the entire slice, if CPP-option
2902       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2903    checkpoint46l_pre
2904    
2905    checkpoint46k_post
2906    o fixed the verification/global_ocean.90x40x15 experiment:
2907     - new bathymetry (the world according to A., JMC, and M.)
2908     - new initial fields and forcing fields (*.bin files)
2909     - new POLY3.COEFFS (for the next release one should switch to a full
2910       equation of state: JMD95P or MDJWF)
2911     - fixed several errors and redundancies in the data file
2912     - experiment uses looped cells
2913     - added matlab directory with diagnostic scripts for plotting of output
2914    
2915    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2916     - read AIM physics parameters from a file (data.aimphys)
2917     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2918    
2919    checkpoint46j_post
2920    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2921    o move wVel computation at the end of the time step, in S/R integr_continuity
2922    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2923    o update timeave pkg for wVel diagnostic.
2924    checkpoint46j_pre
2925    
2926    checkpoint46i_post
2927    o Clean up AIM package (and keep the results unchanged):
2928      include CPP_OPTION and use IMPLICT NONE in all routines ;
2929      declare all the variables _RL ; use _d 0 for all numerical constants.
2930      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2931    
2932    checkpoint46h_post
2933    o cleaned up the use of rhoNil and rhoConst.
2934      - rhoNil should only appear in the LINEAR equation of state, everywhere
2935        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2936        and the dynamical equations are all divided by rhoConst
2937    o introduced new parameter rhoConstFresh, a reference density of fresh
2938      water, to remove the fresh water flux's dependence on rhoNil. The default
2939      value is 999.8 kg/m^3
2940    o cleanup up external_forcing.F and external_forcing_surf.F
2941      - can now be used by both OCEANIC and OCEANICP
2942    checkpoint46h_pre
2943    
2944     Added code to convert surface volume flux (fresh water) into
2945     a mass flux when using P coordinates in the ocean (OCEANICP).
2946     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2947    
2948    checkpoint46g_post
2949    o Include a new diagnostic variable phiHydLow for the ocean model
2950      - in z-coordinates, it is the bottom pressure anomaly
2951      - in p-coordinates, it is the sea surface elevation
2952      - in both cases, these variable have global drift, reflecting the mass
2953        drift in z-coordinates and the volume drift in p-coordinates
2954      - included time averaging for phiHydLow, be aware of the drift!
2955    o depth-dependent computation of Bo_surf for pressure coordinates
2956      in the ocean (buoyancyRelation='OCEANICP')
2957      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2958        Theta, Salinity, and Pressure in the parameter list. This routine is
2959        presently contained in find_rho.F. This routine does not give the
2960        correct density for 'POLY3', which would be a z-dependent reference
2961        density.
2962    o cleaned up find_rho
2963      - removed obsolete 'eqn' from the parameter list.
2964    o added two new verification experiments: gop and goz
2965      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2966    checkpoint46g_pre
2967    
2968    checkpoint46f_post
2969    o Enable tangent linear (forward mode) gradient checks:
2970      - extended active file handling to g_... files
2971      - added TANGENT_SIMULATION to theSimulationMode
2972      - extended grdchk package accordingly
2973    o added tangent linear setup in verification/carbon/code_ftl
2974    o added adjoint setup in verification/front_relax/code_ad
2975    
2976    checkpoint46e_post
2977    o Added new equation of state -> MDJWF
2978      - EOS of McDougall et al., 2002, JAOT, submitted
2979      - caveat: the equation of state is only valid for a smaller (more
2980        realistic?) range of values than JMD95P/Z and UNESCO
2981      - added masks to the calculation of pressure in store_pressure
2982      - added more check values for density in check_eos (ini_eos.F), some of
2983        the old check values are out of the range of the MDJWF-eos, so don't
2984        expect perfect matches for those
2985    checkpoint46e_pre
2986    
2987    checkpoint46d_post
2988    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2989      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2990      case of pressure coordinates. eosType='JMD95Z' in
2991      combination with buoyancyRelation='OCEANICP' now causes an error.
2992    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2993      in find_alpha/beta.
2994    checkpoint46d_pre
2995    
2996    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2997      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2998    
2999    checkpoint46c_post
3000    o Changes necessary for ocean in p-coordinates
3001     -  Added new buoyancy relation = 'OCEANICP'
3002     -  Added new parameters = gravitySign (this used to be contained inside
3003        the factor dRdZ which I added when we first switched to R coordinates).
3004     X GM/Redi is not compatible (yet)
3005     X bottom drag and no-slip need to be debugged.
3006    checkpoint46c_pre
3007    
3008    checkpoint46b_post
3009    o Added new equation of state -> JMD95Z and JMD95P
3010      - EOS of Jackett and McDougall, 1995, JAOT
3011      - moved all EOS parameters into EOS.h
3012      - new routines ini_eos.F, store_pressure.F
3013    o Added UNESCO EOS, but not recommended because it requires
3014      in-situ temperature (see JMD95)
3015    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3016      unesco.f to be used with POLY3
3017    checkpoint46b_pre
3018    
3019    checkpoint46a_post
3020    o Added (atmospheric) pressure loading
3021      - new field in FFIELDS.h, etc...
3022      - new cpp flag ATMOSPHERIC_LOADING
3023    o Changed hFacC to _hFacC in calc_phi_hyd.F
3024    o Added SHORTWAVE_HEATING to some files for consistency
3025    checkpoint46a_pre
3026    
3027    checkpoint46
3028    further merges from release1_p5
3029    o new ctrl package
3030      - adopted from ECCO environment to enable optimization
3031      - added Eliassen Palm fluxes to controls
3032    o added Eliassen Palm flux controls to gradient check package
3033    o cost package
3034      - Compatible with new ctrl package
3035      - added Eliassen Palm cost hooks
3036      - modif's of existing cost functions
3037    o Adjoint-related bug fixes in kpp:
3038      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3039      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3040    o autodiff package
3041      - flow directives:
3042        + new for S/R do_the_model_io
3043        + enhanced for S/R checkpoint
3044        + new gmredi.flow
3045      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3046        disable adcommon.h/g_common.h by default.
3047      - fixed problem for adjoint of global_max
3048    o modified verification/carbon/
3049    o New setup for adjoint of global_ocean
3050    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3051    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3052    o incorporated hooks for sponge layer code (external_forcing.F)
3053    
3054    checkpoint45d_post
3055    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3056    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3057      (affects plume_on_slope "cg2d" output)
3058    o add new parameter deltaTfreesurf for free-surface time stepping
3059    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3060    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3061    o change phiMin in exp1 (to agree with documentation)
3062    o add new flags:
3063     - T,S forcing inside/outside Adams-Bashforth
3064     - turn off temp,salt advection and/or forcing
3065     - for each tracer, define internal flag for multiDimAdvection & A-B
3066    o monitor: change definition of KE to check conservation of Energy
3067    
3068    checkpoint45c_post
3069    o Removed f90 comments ("!")
3070    o Modified initialisations to enable exf package for MITgcm
3071      (without invoking ECCO_PACKAGE).
3072    o modifications to gradient check package (Martin Losch)
3073      - enable centered differences
3074      - modified format of standard output
3075    
3076    checkpoint45b_post
3077    o cleaned exchange calls in cg2d
3078    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3079    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3080      to configure barotropic setup (Martin Losch)
3081    o moved some initialisations within bi,bj loop in dynamics
3082      (TAF flow dependency)
3083    o in initialise_varia, moved call packages_init_variables
3084      before convective_adjustment_init
3085      (corresponding adjustment of TAF tape initialisation).
3086    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3087    
3088    checkpoint45a_post
3089    o compute Rho over the whole domain (extend iMin,jMin indices)
3090    o specific exchange for X-slice domain (case Ny=1)
3091    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3092    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3093    
3094    checkpoint44h_post = checkpoint45
3095    o Fix to restore differentiability:
3096      place at which packages_init_variables is called in
3097      initialise_varia is crucial for reverse control flow.
3098    o modifications in GMRedi to enable stable adjoint
3099      (corresponding modif's in thermodynamics, dynamics)
3100    o added missing hook for sponge layer code in external_forcing
3101    o modified test cost functions
3102    o storing in gad_advection (plus removal of write(0,*)!
3103    o missing headers TR1.h added in convective_adjustment routines
3104    o errorMessageUnit set non-equal zero in eeboot
3105      (conflict on some platforms, e.g. IBM SP3)
3106    o modified carbon verif.
3107    
3108    checkpoint44h_pre
3109    o vertical grid option: allow to put the Interface at the middle between
3110      2 cell-centers ; replace delZ in pkg/kpp by drF.
3111    o GM Advective form: Tracers are advected using the residual transport (=
3112      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3113    
3114    checkpoint44g_post
3115    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3116      results) ; ifdef missing in thermodynamics.F
3117    
3118    checkpoint44f_pre,checkpoint44f_post
3119    o added PTRACERS package
3120      This allows an arbitrary number of passive tracers to be integrated
3121      forward simultaneously with the dynamicaly model.
3122      + Implemented so far:
3123        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3124        - I/O and checkpointing
3125        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3126      + Not implemented so far:
3127        - KPP
3128        - OBCS
3129      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3130        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3131        line in data.pkg.
3132      + This package is disabled by default since it increases storage.
3133    
3134    
3135    o testscript: added -cleanup option
3136    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3137                 b) enable to filter 2D fields.
3138    
3139    checkpoint44e_pre,post
3140    o re-wrote convective adjustment to use pre-calculated weights
3141      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3142      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3143      Original calls to convect() still in place.
3144    
3145    chkpt44d_pre,post
3146    o added missing EXCLUDE_MONITOR flags
3147    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3148      (incompatible typ in MIN/MAX expressions caused problems
3149      on IBM SP3)
3150    o in genmake added variable MAKEDEPEND
3151      plus resetting for case SunOS
3152    o added timer_stats.c routine for IBM SP3
3153    o removed variables in dynamics
3154    !!! I forgot to create tag chkpt44d_pre !!!
3155    !!! But chkpt44d_pre = chkpt44c_post    !!!
3156    
3157    o real fresh water flux implemented with non-linear free-surface.
3158    
3159    chkpt44c_pre,post
3160    o few fix (mask in shap_s2, EmPmR in external_field_load,
3161      USE_NATURAL_BCS in solve_for_P);
3162    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3163    
3164    checkpoint44b_pre/_post
3165    o merge of relevant stuff from the ecco-branch:
3166      - genmake: removed $S64 overwrite for case SunOS
3167      - pkg/exf: update and corrections for field swapping and obcs
3168      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3169                  harmonized between ECCO and MITgcm
3170      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3171                      updated checkpointing_lev... lists for obcs
3172      - model/src: minor changes in forward_step, plot_field
3173                   added directive for divided adjoint in the_main_loop
3174      - pkg/mdsio: added mdsio_gl_slice
3175    
3176    o check parameters & config (chkpt44a_pre,post)
3177    o OBC and NonLin_FrSurf.
3178    
3179    checkpoint44
3180    o fix bug in mom_vi_del2uv
3181    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3182    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3183    o update AIM experiments (NCEP input files)
3184    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3185    o added some stuff for AD
3186    
3187    checkpoint43
3188    o added two new advection tests
3189    o added global 4x4 degree ocean test
3190    o added test of H&S94 with free surface on cube
3191    o some final mods for gradient check, adjoint,...
3192    
3193    checkpoint42
3194      Fixed AD-related problems:
3195    o Store directives up-to-date with re-arranged Adams-Bashforth
3196      (mainly thermodynamics.F)
3197    o New store directives for multi-dim. advection schemes
3198      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3199      * new common block and key passkey
3200      (mainly gad_advection.F)
3201    o Modified store directives for split of dynamics/thermodynamics
3202      for the case ALLOW_KPP
3203    o Cleaned argument list for timestep_tracer.F
3204    
3205    checkpoint41
3206    o re-formatted/added comments in prologues of key subroutines
3207      to work with protex
3208    
3209    checkpoint40
3210    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3211    o added FLT (floats) package from Arne along with demo. experiment
3212    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3213      implementation of forward-in-time forcing terms
3214    o more mods for non-linear free-surface including new variable
3215    o modified multi-dim method to work on cube
3216    o bug fix in KPP (from DM)
3217    
3218    checkpoint40pre9
3219    o added DST advection schemes
3220    o fix MPI bug on SGI's
3221    o modifications for non-linear free-surface
3222    o fixed conditionals for fixed flow/passive tracer only mode
3223    o added tension/strain form of stress tensor
3224    o changes to commenting of arguments for TAF/TAMC
3225    o added/updated many matlab scripts
3226    o added multi-dimensional advection method for tracers
3227      
3228    checkpoint40pre8
3229    o new package rw/
3230      Added method for dumping intermediate local arrays:
3231      mdsio_writetile - same as mdsio_writefield except works from inside
3232                        bi,bj loop
3233      mdsio_writelocal - same as mdsio_writetile except works for local
3234                         arrays
3235      write_local_r? - higher-level wrapper for mdsio_writelocal
3236      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3237      Example given at end of mom_vecinv.F that dumps some local arrays.
3238    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3239      control flux-form versus vector invariant code.
3240      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3241      or genmake -DISABLE ...
3242    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3243      (additional storing is now needed for case vecinv;
3244      currently nothing implemented to switch this storing off
3245      in case fluxform is used since no CPP flag available).
3246    
3247    checkpoint40pre7
3248    o bug fix in dynamics.F
3249      calc_viscosity called before k=1,Nr loop.
3250    o added some #ifdef's ALLOW_PASSIVE_TRACER
3251    o cleaned initialisations in ctrl_map_ini
3252      related to TAF
3253    
3254    checkpoint40pre6
3255    o split dynamics into thermodynamics & dynamics
3256    o corresponding split of calc_diffusivity into
3257      calc_diffusivity, calc_viscosity
3258      (kpp_calc_diff, kpp_calc_visc).
3259    o Added diffkr, kapgm to control variables
3260    o bug fix in gmredi_slope_limit for ldd97
3261    
3262    checkpoint40pre5
3263    o proper initialization of Adams-Bashforth time stepping
3264      + uses forward step for very first step of model (iter=0)
3265    o re-generated *all* output since almost all output is modified by this
3266      change (sorry but we've been putting this one off for about 2 years)
3267      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3268        *not* regenerated since they are already out of date and I don't
3269        want to create the impression that they are suddenly working.
3270    o removed KAP stuff for DEC's
3271    o modified/added many .cvsignore files in */code and */input
3272    o added new expt "solid-body.cs-32x32x1"
3273      + this uses an alternative form of ini_curvilinear_grid.F which
3274        is not necessarily any better than the current one...
3275    
3276    checkpoint40pre4
3277    o added re-initialisations of utrans,vtrans,rtrans in
3278      calc_common_factors which are crucial for TAF.
3279    o extended iMin,jMin range for calc_common_factors,
3280      calc_diffusivity
3281    o added option ALLOW_PASSIVE_TRACER
3282    o a few minor updates and fixes
3283    
3284    checkpoint40pre3
3285    o created calc_gtr1.F for gad package
3286    o split the_main_loop and re-introduced forward_step
3287    o some recomputations of nIter0 for TAMC
3288    
3289    checkpoint40pre2
3290    o Updated to latest branch of AJA, JMC
3291    o Added gradient check package
3292    o Added routines for passive tracer handling
3293    o Added carbon sequestration sensitivity experiment
3294    
3295    checkpoint39
3296     o Modifications and fixes to support TAMC
3297       (mainly missing or wrong directives)
3298     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3299       in addummy_in_stepping
3300     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3301     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3302     o Included following packages:
3303       cal: calendar
3304       exf: external forcing
3305       ecco: essential routines to control use of cal, exf
3306             (NB: this is not the full ECCO environment)
3307     o disabled some packages by default in genmake
3308    
3309    checkpoint38
3310     o see notes_c37_adj.txt
3311     o corrected wrong layer index in external_forcing_t
3312     o replaced the_main_loop/forward_step by the_main_loop
3313     o removed forceoutput from write_state
3314       (replaced criteria for initial/final state)
3315     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3316    
3317    checkpoint37
3318     o mdsio.F routine split and packaged in pkg/mdsio
3319       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3320        used unless genmake -disable=mdsio)
3321     o allow a more precise surface-geopotential gradient for the atmosphere
3322       taking into account the change in space of Alpha (=1/rho) at the surface.
3323     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3324       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3325     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3326       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3327       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3328     o Time-Average diagnostics defined as a pseudo package "timeave".
3329     o pickup files : old pickup (before c35) did not work with new code (c35
3330       and after) unless activating 2 commented lines in initialise-varia.
3331     o Non-Hydrostatic pickup file Pb fixed.
3332     o bug with Rigid-lid version (since c35) fixed.  
3333    
3334    checkpoint36
3335     o implement Crank-Nickelson barotropic time-stepping
3336     o recover Time-Average diagnostics
3337     o fix Pb in checkpoint (PR#19)
3338     o AIM become a standard package ; clean unused CPP_kees
3339    
3340    checkpoint35
3341     o subtantial rewrite of dynamics.f
3342     o allows staggered time-stepping
3343     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3344     o added bottom drag (linear + quadratic)
3345    
3346    checkpoint34
3347     o Modified exchange routines for correct reverse simulation.
3348     o Added verification output to comply with bug fix in impldiff.F
3349       as of c33 (exp2, natl_box).
3350     o Corrected store directives in dynamics.F
3351     o Corrected array boundaries in impldiff.F
3352     o Corrected array dimensions in gmredi.
3353       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3354     o Added routine GLOBAL_SUM_INT to global_sum.F
3355     o Added mdsio_gl.F for ECCO purposes.
3356    
3357    checkpoint33
3358     o Fixed bug in lower BC in impldiff.F
3359     o Fixed confusion about units of forcing arrays in FFIELDS.h
3360       namely Fu,Fv,Qnet,Qsw,EmPmR:
3361       - Removed verification/natl_box/code/external_fields_scale.F
3362         (did not differ from that in model/src)
3363       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3364         (see FFIELDS.h for description)
3365       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3366         kpp_calc.F and kpp_transport_t.F
3367       - Removed model/src/external_fields_scale.F and calls to it
3368       - verification/natl_box uses flux data with "atmospheric" sign so
3369         a special version of external_fields_load.F is used to
3370         change the data as it's read in. This way, the arrays
3371         have the right units and signs at all times tha a user could
3372         possibly use them.
3373     o Corrected genmake to delete a temporary file during configuration
3374    
3375    checkpoint32
3376     o Scaling of forcing fields moved from external_forcing.F to
3377       external_fields_scale.F, called directly after loading fields.
3378     o Surface relaxation terms added to surface tendency fields in
3379       extra subroutine.
3380     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3381       fields.
3382     o Changes in GMRedi to comply with packaging structure.
3383     o Modifications and bug fixes in KPP package.
3384     o Verification experiment for KPP added (verification/nat_box/)
3385    
3386    checkpoint31
3387     o Packages interface brought in line with defined standard
3388       -> new routines packages_...F
3389       -> changes in initialise_fixed.F, initialise_varia.F
3390       -> enables initialisation interface for ECCO package
3391     o Rescaling of external forcing fields immediately after read
3392       (removed from external_forcing.F)
3393       -> new: surface_fields_scale.F
3394       -> affects ini_foorcing.F, external_fields_load.F
3395     o Computation of surface tendencies before tendency updates.
3396       -> new: external_forcing_surf.F
3397     o Change of variable names useGMRedi, useKPP, useECCO
3398     o Further changes in dynamics.F, impldiff.F for TAMC
3399     o Tested for experiments 0, 2, 4.
3400       - not yet tested for GMRedi.
3401       - not yet tested for KPP.
3402    
3403    checkpoint30
3404     o Updates for OBCs
3405     o New experiment for test OBCs (internal_wave)
3406     o New output.txt in verification/exp4/results/
3407     o Updates for KPP: calculation of viscosity corrected, new variables
3408       kpp_dumpFreq and kpp_taveFreq
3409     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3410       and entry for T90 in genmake
3411    
3412    checkpoint29
3413     o packaged KPP and GM/Redi
3414    
3415    checkpoint28
3416     o Corrected initialization of hFacMin for difference vertical coordinates
3417     o Modified calculation of partial cell thickness to more robust algorithm
3418     o config_summary.F: replaced write_1D_... by write_0D_...
3419       read_write.F: added subroutines write_0D_...
3420     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3421       included some initialisations required for TAMC.
3422     o routine calc_isoslopes: modified sqrt computation to make it
3423       differentiable for zero argument.
3424     o routines dynamics, impldiff:
3425       included store directives and tape key computations required for TAMC.
3426     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3427    
3428    checkpoint27
3429     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3430       formulation works properly with variable resolution.
3431     o restructured the calling tree between the_model_main() and dynamics()
3432     o split initialise() into initialise_fixed() and initialise_varia()
3433     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3434       in new routine ini_psurf()
3435    
3436    checkpoint26
3437     o moved some #ifdef in optional routines to encompass everything
3438       except the argument declarations. This was using up some memory.
3439     o fixed macros like _ADT to work with both versions of Linux cpp
3440     o cleaned up some unused and uninitialized variables
3441       (helps when debugging with strict compile options)
3442     o split up CPP_EEOPTIONS.h into options and macros
3443       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3444     o patch for 2 processor JAM mode
3445    
3446    checkpoint25
3447     o updates for OBCs and NH
3448     o dramatically reduced memory usage
3449     o added "JAM" routines for use on Artic network
3450     o parameterization of convection by implicit vertical diffusion
3451     o added a diagnostic of convective index
3452     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3453       (this is was partly for OBCs and NH but also in anticipation of
3454        an explicit free-surface option)
3455     o initial state input files for U and V
3456    
3457    checkpoint24
3458     o Removed some spurious "REAL"s
3459     o Updated KPP to latest version from JPL
3460     o Added a COS(latitude) in horizontal viscosity
3461    
3462    checkpoint23
3463     o Added del^4 diffusion for salt and temperature
3464     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3465    
3466    checkpoint22
3467     o Made many small changes: implicit none, format(i5), etc...
3468     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3469    
3470    checkpoint21
3471     o Introduced new I/O package that supports direct-access records (mdsio.F)
3472     o Split-up mid-level I/O routines
3473     o Updated input data for experiments 0,1,2,4 and 5
3474     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3475    
3476    checkpoint20
3477     o Tidied up open-boundaries some more
3478     o Added non-hydrostatic code
3479     o Fixed some input data
3480     o Modified MPI start-up to work in "coupled" context.
3481    
3482    checkpoint19
3483     o Tidied up directory structure for verification experiments.
3484     o Added new code for open boundaries.
3485     o Corrected advective terms near boundaries.
3486     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3487     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3488     o Split default parameters out of ini_parms.F into set_defaults.F.
3489    
3490    checkpoint18
3491     o Further changes for optional code generation with
3492       CPP - ugh!
3493    
3494    checkpoint17
3495     o Beginning to incorporating modularity
3496       for supporting atmos. and ocean configs.
3497     o Small changes for TAMC complinace
3498     o New ultra simple test case. Barotropic box
3499       configuration "exp0".
3500    
3501    checkpoint16
3502     o Minor changes to exchange routines to support
3503       accumulation in reverse mode. Adjoint of an
3504       assignment is an addition.
3505     o Changes to support compilation by TAMC (LR(1)
3506       syntax) and by g77 under Linux ( 72 character
3507       limit ).
3508    
3509    checkpoint15
3510     Rewrote exchange routines to allow
3511     o General tile <-> tile connectivity.
3512     o TAMC reverse mode flag ( is this really needed? )
3513     o Variable width overlap and exchange region widths.
3514     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3515       shmput/shmget, VIA, SYSV shmem and every other cool
3516       communication method.
3517    
3518    checkpoint14
3519     Consistent isomorphism chages made. These allow dynamical core
3520     to support both pressure and meters as a vertical coordinate.
3521    
3522    checkpoint13
3523     Release which corrects global_max problem and a couple
3524     of KGM time-averaging diagnostic errors. Also contains
3525     a double-gyre experiment setup as well as the baseline
3526     4 degree global template. The double gyre template is
3527     organised to allow it to be applied automatically to
3528     the baseline configuration.
3529    
3530    branch-point-rdot
3531     A few tidy-ups have been made bt the real point of this
3532     check-point (excuse the pun) is to allow a branch to be
3533     made for the purposes of adding the rDot alterations.
3534     I don't want to commit the rDot to the main-trunk until
3535     we've actually tested it...
3536    
3537    checkpoint12
3538     Tidy up and added generic genmake script (formerly
3539     configure script).
3540     Released to testers.
3541    
3542    checkpoint11
3543     Re-arranged initialise() and introduced ini_vertical_grid()
3544     and ini_masks_etc().
3545    
3546  checkpoint10  checkpoint10
3547   Introduced the configure script.   Introduced the configure script.
3548   Separated out the diags package.   Separated out the diags package.

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