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revision 1.85 by heimbach, Mon Sep 16 18:23:22 2002 UTC revision 1.870 by gforget, Fri Sep 7 22:42:32 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/ecco: allow user defined cost function contributions
8    o testreport:
9      Allow to choose (per experiment) the list of tested output variables
10       and the main variable (used to issue a pass/FAIL ) ;
11      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
12      - default is unchange: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
13      Also modify printing of summary:
14       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
15       b) echo the list of tested variables in the individual summary.txt of
16          each experiment.
17    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
18      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
19      (but still depend on the tile decompostion of the domain).
20    o pkg/seaice: change a discretization detail to make the B-grid code
21      "more symmetric". This change is likely to remove all "ridges/leads" that
22      where quasi-aligned with the grid in B-grid solutions. It may also be
23      the solution to the stress coupling issues with the B-grid.
24    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
25      remove .cvsignore from input dir. (since testreport no longer run here).
26    o pkg/thsice:
27     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
28     - fix reshaping of sea-ice just after advection:
29       melt all the ice only if ice-volume is too small.
30     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
31       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
32     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
33    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
34      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
35    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
36      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
37      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
38      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
39      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
40      -> update output.txt
41    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
42     this affects truncation error: -> update output.txt of exp:
43      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
44      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
45    
46    checkpoint59f
47    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
48    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
49      a bounded range (in forward mode)
50    o pkg/ecco, ctrl, autodiff and mom_common:
51     internal parameter controls, completements of implementations
52    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
53    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
54      (not seem any difference in testing results).
55    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
56       at face corners.
57    o pkg/generic_advdiff:
58     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
59      loop range indices for computing vertical advection tendency
60      and do the calculation in the interior only (no overlap) ;
61      for now, only implemented for SOM advection (to save CPU time).
62     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
63    o exch2 adjoint
64      First set of changes:
65      - add exch2 hand-written adjoint templates
66      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
67        This will require cleanup in pkg/autodiff/*.F
68        (changed routines currently kept separate in verif. code/)
69      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
70        that used to hide exch2 or cubed-sphere specific code
71        (commented via 'cph-exch2')
72    o pkg/seaice
73      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
74    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
75       output of global_ocean.cs32x15.thsice .
76    
77    checkpoint59e
78    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
79      for B-grid vector (not yet tested) and C-grid vector (<- only used
80      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
81    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
82      (#ifdef ALLOW_SALT_PLUME)
83    o gather_2d/scatter_2d: removed halo regions
84    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
85      scheme and the corresponding test case (under front_relax dir). For now,
86      only available with Skew-flux form and not yet tested in realistic set-up.
87      adjoint: store directives updated, but gradient checks deteriorated,
88      so maybe GM/Redi adjoint is now broken.
89    o seaice adjoint
90      * add AREA, HEFF, HSNOW as control variable
91        (should not change lab_sea results)
92      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
93    o pkg/seaice:
94      * added computation of saltFlux in seaice_growth;
95        For time being, sea ice salinity is assumed constant
96        contribution of snow flooding to freshening of sea ice is neglected.
97        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
98        defaults to 0.0 in order to maintain backward compatibility.
99        Typical values for SEAICE_salinity are 4 to 10 g/kg.
100      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
101      * added SEAICE_availHeatFrac, which specifies fraction of surface level
102        heat content used to melt or grow ice
103      * commented out cap of HICE: it helps keep ice thinner
104      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
105      * applied OBCS T/S mask to HEFFM sea ice mask
106    
107    checkpoint59d
108    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
109     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
110     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
111    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
112     and change default value of parameter "GM_Small_Number";
113     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
114       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
115       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
116    o pkg/ecco: cost function when applying pkg/smooth to controls
117    o pkg/ctrl: add forcingPrecond run time parameter
118    o pkg/seaice:
119     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
120     - fix bug in metric terms of u-equation in LSR solver (implicit part),
121       changes verification/lab_sea
122     - rearrange implicit part of u-equation in LSR solver to make it easier to
123       read, understand, and debug. This causes changes at the truncation level.
124     - fix (serious) bug in the boundary conditions (sign error in the implicit
125       part) of the LSR solver. Changes all LSR results.
126     - fixed problem with HSNOW initialization to avoid thick snow when AREA
127       is initilized with small values - does not change lab_sea results.
128     - added HsnowFile initialization capability
129    o pkg/smooth: addition to model/src and pkg/ctrl so allow
130     initialization of pkg/smooth and application to control vector
131    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
132    o dependencies: pkg/profiles requires pkg/cal
133    o pkg/profiles:
134     - added option ALLOW_PROFILES_GENERICGRID
135         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
136         that interpolation information (grid points and coefficients) is provided
137         within the netcdf input files.
138         -> sample matlab scripts can be found in MITgcm_contrib/gael
139         that allow you to prepare netcdf input files.
140     - also modified: cleaner include statements, cleaner error print statements,
141       cleaner stops when error, and more tests of the netcdf input files consistency.
142    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
143    o pkg/seaice:
144     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
145       requires a new routine: seaice_diagnostics_fill.F
146     - make sure that seaice does not move if not forced (pressure replacement
147       method, Hibler and Ip, 1995), changes results
148     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
149     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
150       It is turned off by default (=-1.), because it changes the results.
151     - make it possible to read AREA from a file, too.
152    
153    checkpoint59c
154    o add S/R and diagnostics for oceanic mixed-layer depth
155    o move GMRedi call after all vertical mixing schemes (including KPP)
156    o pkg/thsice:
157     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
158      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
159    o pkg/obcs:
160     - bug fix for balance code
161    o pkg/seaice:
162      - allow values of SEAICE_elasticParm > 1
163      - add new parameter SEAICE_evpTauRelax as an alternative
164        to SEAICE_elasticParm
165      - make lsr boundary conditions free slip (by default), changes result
166      - add code for no slip boundary conditions for lsr
167      - set minimum of zeta to zero (and not 4e8) (changes results)
168      - add a cap on AREA after advecting AREA if seaice_growth is not called
169    o change calculation of Visbeck K:
170      - no longer depend on tapering scheme; instead, compute slope (limited
171        by GM_maxSlope). this is equivalent to what was comuted before with
172        clipping or linear tappering.
173      - fix vertical averaging (wrong by 1/2 level)
174      - leave the old version (but will not be maintained) within
175        #ifdef OLD_VISBECK_CALC / #endif
176      - update output of exp. ideal_2D_oce
177    o change error catch in calc_r_star to improve vectorization
178    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
179      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
180    o adjoint:
181      Re-organized adjoint checkpointing according to Matt Mazloff
182      (but with modifs/completions/cleanups)
183      Storing is now bundled into large arrays to optimized I/O
184      (and second step in cleanup of the_main_loop)
185    
186    checkpoint59b
187    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
188      - export/import (between ocean & coupler) fields needed for ocean DIC.
189    o pkg/seaice:
190      - get rid of three more exchanges seaice_calc_viscosities (required
191        different loop boundaries in seaice_lsr and seaice_ocean_stress)
192      - bug fix in seaice_ocean_stress (update of lab_sea required)
193      - reduce loop boundaries to necessary minimum also in seaice_evp
194      - go back to the old way of computing deltaC/Z as the adjoint likes that
195        better
196    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
197      passive tracer to an Age Tracer) + update output.txt
198    o pkg/exf:
199      - implement A-grid / C-grid selection for wind-stress input files.
200      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
201      for now, in exf_bulk_largeyeager04.F only :
202      - change implementation for case where windspeed + 2. components wind-stress
203        are read-in. AND use rhoConstFresh to convert evap.
204    o pkg/seaice:
205      - use correct EXCH_UV for wind-forcing (on A-grid).
206      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
207        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
208    o pkg/exf:
209      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
210      EXF_INTERPOLATION:
211      - merge global_with_exf/code version of exf_interp_read.F
212        to the main code ;
213      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
214        reading the file ; Important: This options needs to be defined to recover
215        previous code.
216        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
217      - no longer loose real*8 precision along the way when using exf_iprec=64.
218    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
219      - change discretisation of evp-solver in order to avoid another exchange
220        (changes lab_sea) and clean up a little
221      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
222        help the adjoint (this also changes the results slightly)
223      - add a few "_d 0" where they had been missing in seaice_evp.F
224      - cleaning up: remove unused seaice_calc_rhs.F
225    o pkg/exf: some cleaning-up:
226      - change various "constants" into runtime parameters
227      - cleaned-up Large&Yeager04 routine which should eventually
228        replace exf_bulkformulae.F (changed names of S/R and CPP)
229        and merged various ALLOW_ATM_WIND options
230     only used with thsice pkg (in thsice_get_exf.F):
231      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
232        which are used when useStabilityFct_overIce=TRUE (= the default)
233      - change default values of ice & snow emissivity and scale downward LW
234        by ice & snow emissivity.
235    o pkg/thsice:
236     fix few little problems, in thsice_calc_thickn.F:
237      - growth vertically (and not laterally) if iceFrac == iceMaskMax
238      - melt only laterally if hIce < hThinIce (as the comments say)
239      and in thsice_extend.F:
240      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
241      - start to form ice as soon as the minimum ice-volume is reachable.
242     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
243      and cpl_aim+ocn
244    o pkg/kpp
245     - move computation of surface related input fields to KPP into a new
246       subroutine kpp_forcing_surf.F
247     - remove wrong (within bi,bj loops) EXCH calls.
248     - little cleaning (add argument myThid in last position, cvs header ...)
249     - for now, fix conservation problem by exchanging KPPviscAz (may not
250       be the best fix)
251    o pkg/seaice
252     - check for inconsistent evp parameter/cpp-flag combination
253     - remove leftover errIO flat for obsolete name list error handling
254    o OpenAD
255     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
256    
257    checkpoint59a
258    o pkg/seaice: some parameter clarifications and a little bit of clean up
259    o pkg/thsice: rename run-time parameters:
260       himin       -> hIceMin
261       himin0      -> hThinIce
262       hihig       -> hThickIce
263       i0          -> i0swFrac
264       transCoef   -> bMeltCoef
265       frac_energy -> fracMelting
266      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
267       with default values (for now) that do not change the results.
268      remove old version of thsice vars advection in pkg/seaice.
269    o in FFIELDS.h:
270      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
271      - make pLoad & sIceLoad always available (but still only used if
272         ATMOSPHERIC_LOADING is #define).
273    o pkg/kpp: replaced _KPP_RL with _RL
274    o bug fixes for vertical diffusivity computations when both KPP and
275        3D diffusivity arrays are used.
276    o pkg/seaice: fix bug in evp solver, while doing that
277      - change (improve?) discretization of stress computations for both
278        cgrid-lsr and evp solver
279      - add a new routine to compute strain rates
280      - the above changes lab_sea results
281      - add no slip conditions for evp solver (off by default), lsr-version
282        may follow
283      - fix exchange for shear at Z-points (does not change lab_sea)
284      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
285        (to force the user to pick a time step since there is not "safe" way
286        of choosing it)
287      - add principal stress diagnostics
288      - rearrange fields for evp a little to avoid having to call a: too many
289        exchanges and b: exchanges for stress trensor components which we do
290        not have.
291      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
292        of evp, complete rewrite for lsr case (latter is does not yet work
293        in all cases)
294    o pkg/kpp: add code to have mixing in shelf ice caverns
295      - add myThid to all kpp routines (long overdue)
296    
297    checkpoint59
298    o pkg/exf:
299      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
300        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
301      - move exf header files from lower_case.h to UPPER_CASE.h ;
302        add missing cvs Header & Name
303      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
304      - add namelist param. selectStressGridPosition, exf_monFreq
305      - retire many _CLIM routines, and remove data.exf_clim
306        + params moved to data.exf
307        + climsst, climsss now handled by exf_set_gen, i.e.
308          climss?period=0 refers to constant field,
309          climss?period=-12 to monthly forcing
310      - split up namelists in data.exf
311    o pkg/seaice:
312      - remove seaice_exch and seaice_exch_uv
313      - remove superfluous exchange of theta
314      - add myThid to seaice_budget_ocean/ice
315      - add new interface for atmospheric wind forcing (C-grid only)
316        + new routine
317        + two new field (taux, tauy for stress over ice)
318        + removed one global field (DAIRN) for C-grid case only
319    o pkg/thsise
320      - 2nd set of modifs for thsice adjoint in conjunction with exf
321    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
322    
323    checkpoint58y_post
324    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
325      vertical diffusivity, similar to that in MOM4; turned on using
326      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
327      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
328    o Added capability for 3D specification of background vertical diffusion
329      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
330      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
331      "data" file that contains the 3D vertical diffusivity coefficients.
332    o ice dynamics (pkg/seaice) with thsice thermodynamics:
333      - add code within pkg thsice to advect & diffuse sea-ice fields
334      similar to (and will replace) what has been added in  seaice_advdiff.F,
335      but: - conserving Mass, Heat & Salt.
336           - better when using non-linear advection scheme (not yet fully tested)
337           - can also be used in atmospheric set-up (for now, only the diffusion).
338    
339    checkpoint58x_post
340    o IO option for global-file compact format:
341      - add options when generating topology (utils/exch2/matlab-topology-generator)
342      - add I/O capability (pkg/mdsio).
343      - adapt utils/matlab/rdmds.m to read this format.
344      for now long-line format not yet supported by pkg/mdsio (& exch2).
345    o shelfice: add a few diagnostics
346    
347    checkpoint58w_post
348    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
349      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
350      (and replace horiVertRatio in NH code).
351      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
352                         and tutorial_plume_on_slope (sensitive to truncation)
353    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
354      directly to drive seaice model (C-grid only)
355    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
356     - reintroduce computation of wind from stress,
357     - compute tau (in exf_bulkformulae.F) from windstress averaged to
358       mass points to avoid tau = 0
359     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
360    o rdmnc.m: make it work with "global" files created with gluemnc
361    o rdmnc.m : some improvements in dealing with singleton dimension
362      (tested on all testreport mnc output files).
363    o genmake2: disable pkg/profiles if netcdf test fails.
364    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
365    o move call to cal_readparms up to make calendar parameters/variable available
366      to all packages
367    
368    checkpoint58v_post
369    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
370      useDynP_inEos_Zc tested.
371    o pkg/exf: changes to properly interpolate/mask/scale initial fields
372    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
373      and portions thereof.  See read_cs.txt for description and examples.
374    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
375      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
376      following the great-circle arc between those 2 points.
377    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
378      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
379    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
380     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
381     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
382     - still needs work (not working with some options ; efficiency to improve)
383       and serious testing.
384     - use this scheme for temperature & salinity in 2 advection test exp.:
385       advect_xy & advect_xz, respectively.
386    
387    checkpoint58u_post
388    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
389    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
390    o testreport: add option "-skipdir" to skip some test.
391    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
392      momentum calculation.
393    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
394    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
395      remove checkpoint.F and the_correction_step.F (no longer used);
396      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
397    o add option (linFSConserveTr) to correct for tracer source/sink due to
398      Linear Free surface
399    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
400    o pkg/thsice: fix reading mnc-pickups
401    
402    checkpoint58t_post
403    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
404    o pkg/mdsio:
405     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
406       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
407       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
408     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
409     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
410       either MDS_READ_FIELD or MDS_WRITE_FIELD )
411     - new S/R (to replace MDSWRITEMETA), which allows to write more
412       informations (variable names, time ...) to meta files.
413     - modify rdmds.m to give back the meta file content.
414    o pkg/diagnostics: change vertical interpolation to be safer, and more
415       flexible (define p-levels to interpolate to in data.diagnostics);
416      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
417       diagnostic pointer.
418    o pkg/seaice: more cleaning up of seaice_growth, added many comments
419    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
420    o fix multi-category seaice:
421     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
422       SEAICE_MULTICATEGORY
423     - fix short wave heat flux
424    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
425       and allow to use EVP solver. Change forward lab_sea: test both EVP
426       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
427    o Initial check-in of lab_sea adjoint
428      (very similar to natl_box_adjoint/code_seaice)
429      * used C-grid and EVP solver
430      * used KPP, GM/Redi
431      * uses inAdExact=.TRUE.
432      * gradient checks fail for both ADM and TLM
433        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
434        f.d. gradients actually seem more problematic than ADM, TLM gradients;
435        issue is related to forward mismatch between g77 an ifort
436    o pkg/seaice: overhaul of thermodynamics
437     - growth.F and groatb.F are replaced by new routine seaice_growth.F
438     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
439     - move a few global fields out of SEAICE.h into seaice_growth.F and
440       make them 2D (FICE/QNETO/ ...)
441     - remove FO (it is the same as QNETO)
442     - introduce a few local fields to avoid modifying external fields such
443       as atemp, etc.
444    
445    checkpoint58s_post
446    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
447      changed exf_set_gen.F so that
448        genperiod=0 means input file is one time-constant field and
449        genperiod=-12 means input file contains 12 monthly means
450    o CG2D: use pre-computed solver main-diagonal (stored in common block);
451      this affects truncation error ; generate new output file for exp. which
452      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
453        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
454        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
455        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
456        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
457        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
458    o start implementation of deep-atmosphere and anelastic formulation
459    o verification: remove 2nd copy of input files and use script "prepare_run"
460      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
461    o mom_common/vecinv/fluxform: fix a few initialisation isssues
462    o profiles: fix for multithreaded case
463    
464    o diagnostics: rename few diags:
465      s/'PRESSURE'/'RCENTER '/g
466      s/'TICE    '/'oceFreez'/g
467      s/'TAUX    '/'oceTAUX '/g
468      s/'TAUY    '/'oceTAUY '/g
469      s/'SWFLUX  '/'oceQsw  '/g
470      s/DIFx/DFxE/g
471      s/DIFy/DFyE/g
472      and add few ocean-forcing diagnostics:
473      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
474    o modifications to pkg/seaice/growth.F and budget.F, which change results of
475      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
476      as actual snow thickness.  It now refers everywhere to effective snow
477      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
478    
479    checkpoint58r_post
480    o modifications to pkg/seaice/growth.F, which change results of
481      lab_sea experiment: fixes pertain to melting snow over open water, to
482      masking EVAP under sea ice, and to using the correct AREA variable for
483      computations of EVAP, PRECIP, HSNOW, and GHEFF
484    o add ability to read bathy, salt, and theta using MNC (off by def)
485    o add flooding algorithm and advection of HSNOW for pkg/seaice;
486      both are turned off by default and do no change any results
487    o seaice advection with pkg/thsice: a step toward the use of non-linear
488      advection scheme, but #ifdef or commented out for now (requires more EXCH).
489    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
490      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
491      in natl_box (affects results @ truncation level: update output.txt)
492    o multi-threading and IO:
493      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
494      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
495        (needed to work with SingleCpuIO): tested in all verif. exp.
496    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
497      affects the results (but none of the verification test uses this scheme).
498    o Adding some pkg/diagnostics capability to pkg/seaice
499      (will certainly be subject to changes)
500    o ctrl: adding new control variables:
501      lwflux, lwdown, evap, snowprecip, apressure, runoff
502    
503    checkpoint58q_post
504    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
505      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
506      high_res_cube configuration by 4% on Columbia.
507    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
508      add (in global_with_exf/code) a version of EXF_INTERP_READ without
509      dynamical allocation (seems to work in multi-threaded).
510    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
511      single CPU io) so that TAF does not have to see EESUPPORT.h
512    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
513    
514    checkpoint58p_post
515    o obcs: stop if obcs is used with useCDscheme = .true.
516    o shelfice:
517     - fix a sign error so that no slip at shelfice interface works
518     - remove stop for combination non-hydrostatic code and shelfice. That does
519       not mean, that the results are correct, but at least they are numerically
520       stable
521    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
522    o added adjoint exch routined for all exch*3d* routines
523      and updated flow directives
524    
525    checkpoint58o_post
526    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
527      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
528    o change controling S/R for writing pickup file (new S/R do_write_pickup)
529      and clean-up reading/writing of pickup files.
530    o fix local version of read/write pickup (NH part) in rotating_tank/code
531    o simplify EXCH interface:
532     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
533     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
534    o added the regrid package
535    o shelfice:
536     - add a simple boundary layer scheme to reduce noise
537     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
538    
539    checkpoint58n_post
540    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
541       local variable (not in common block).
542    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
543      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
544      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
545        to work with SingleCpuIO.
546    o add "_d 0" to real constant of pkg/cfc subroutines ;
547       update exp. cfc_exemple & tutorial_cfc_offline output files.
548    o multi-threading and IO:
549      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
550        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
551      - barrier before and after reading.
552      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
553      - avoid using MDS_WRITELOCAL for LAND pkg output.
554      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
555        common-block variables ; Allows multi-threading with master-thread IO.
556    o change default MAX_NO_THREADS from 32 to 4 ;
557      and stop cleanly when MAX_NO_THREADS is too small.
558    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
559    
560    checkpoint58m_post
561    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
562       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
563    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
564       keep global_ocean.90x40x15 (for AD testing) with former secondary test
565       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
566    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
567        add MITgcm_tutorials (= code + all the tutorials)
568    o ecco, option to compute cost for total ssh (mean+anom)
569    o consistent with addition of ptracer and ssh in pkg/profiles
570    o profiles: adding ptracer and ssh
571    o testreport: change multi-test output-file name
572      (from output.txt.{name} to output.{name}.txt)
573    o profiles: now ok for mutli-tiles case
574    o seaice: add 4 parameters for different advection schemes for area,
575      (effective) seaice thickness, enthalphy, and snow height. Their default
576      is the standard parameter SEAICEadvScheme
577    o calc_gw:
578     - add cosFacU in zonal viscous flux (harmonic.visc.).
579     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
580       of tutorial_plume_on_slope.
581    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
582    o calc_gw: true flux-form, account for horizontal grid spacing.
583      update rotating_tank results, but not plume_on_slope (affected at
584      truncation level, 11 digits).
585    
586    checkpoint58l_post
587    o calc_gw:
588     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
589     - remove side-drag for now (need to fix it); update plume_on_slope results.
590     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
591    o commit code to make SST/SSS weights spatially variable
592      (based on either variable in-situ or variable initial T/S weights)
593    o pkg/ecco:
594      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
595        now based on horizontally varying weights wthetaLev, wsaltLev
596      * cost_averagesflags now returns year indices in addition to day, month
597      * sflux balance is performed on annual basis
598        (sflxumm, sfluxmm2, bal_sfluxmm)
599      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
600        including separate counting and multipliers
601    o pkg/rbcs
602      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
603    
604    checkpoint58k_post
605    o testreport:
606     - always build in dir. "build" (if not there, mkdir build instead of building
607       & running in input)
608     - run in dir run (if it exists), in build otherwise.
609     - call prepare_run (if input/prepare_run exists)
610     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
611    o pkg/exf modifications to interpolation and rotation routines for more
612       reasonable treatment of North Pole singularity: for tracers North Pole
613       value is set to northernmost zonal-mean value, for zonal velocity it is
614       set to zero, and for meridional velocity it is set to northernmost value.
615    o pkg/exf/exf_check_range.F
616     - add tile index to diagnostics and move stop statement to the very
617       end of the routine.
618    o pkg/diagnostics: (diagnostics_main_init.F)
619      define title of isomorphic variables according to the current config.
620    o pkg/thsice with pkg/seaice dynamics:
621    - fix domain of computation (interior only, required for exf) and do exchanges
622    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
623    o towards a standard way of dealing with multi-threading in MONITOR
624      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
625    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
626       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
627    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
628    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
629    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
630       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
631    o tracer advection:
632     - clean-up and simplify calc_common_factors.F
633     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
634       advection subroutine (but still not used within DST advection S/R)
635    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
636    
637    checkpoint58j_post
638    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
639      from file (collects calls previously in FORWARD_STEP)
640    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
641    o adjoint store dir. adjusted accordingly
642    o genmake2
643      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
644    
645    checkpoint58i_post
646    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
647      on wind stress (SEAICEstressFactor defaults to 1.)
648    o Total number of Timers is finite (<=40): comment out 2 non-essential one
649      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
650    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
651      on CS-grid: no longer loosing mass.
652    o exf & curvilinear-grid: no longer modify longitude xC & xG.
653    o pkg/ggl90: fix sloppy output and fix a bug
654    o pkg/seaice: added SEAICEuseEVPpickup parameter
655      - Set to false in order to start EVP solver with
656        non-EVP pickup files when using SEAICEuseEVP
657      - fix sign error in diffusion in seaice_calc_rhs
658    
659    checkpoint58h_post
660    * Modifications for bottom topography control
661      o replace hFacC by _hFacC at various places
662      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
663      o add non-self-adjoint cg2d_nsa
664      o update autodiff support routines
665      o re-initialise hfac after ctrl_depth_ini
666      o works for 5x5 box, doesnt work for global_ocean.90x40x15
667    * Adding verification for 5x5 box (4-layer) bottom topography control
668    
669    checkpoint58g_post
670    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
671       used for mean seasonal cycle, mean diurnal cycle); add an example
672       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
673    o pkg/ggl90:
674      - add parameter (minimum surface kinetic energy)
675      - fix bug (avoiding division by zero)
676    o couple pkg/thsice to pkg/seaice:
677      - modify advection in seaice to accomodate new scalar fields to be advected
678      - only muliDimAdection scheme work with seaice/thsice
679      - mapping of thsice-variables to seaice-variables, back and forth
680      - does not break the verification experiments, but does not give the
681        desired results either
682    o pkg/seaice
683      - make (default) second order advection a bit less confusing?
684    
685    checkpoint58f_post
686    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
687      to pkg/seaice):
688      - new routines thsice_map_exf and thsice_get_exf provide the interface
689      - add an additional formal parameter to thsice_solve4temp
690    o pkg/exf:
691      - add new fields wspeed, snowprecip (to be able to couple to thsice)
692      - correct Stefan-Boltzmann constant
693      - new parameter for longwave surface emittance
694      - separate some stuff from exf_bulkformulae into new routines  
695        exf_radiation, exf_wind
696      - add new parameters and constants: longwave emissivity for ocean, ice
697        and snow, evaporation parameters over ice
698      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
699        either wind from stress or stress from wind
700    o pkg/thSIce:
701    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
702    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
703       and THSICE_CALC_THICKN
704    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
705    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
706      to make debugging easier.
707    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
708    o pkg/bulk_force:
709      - clean-up comments and parameters ;
710      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
711    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
712      generate new output for test-experiment: aim.5l_cs.thSI
713    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
714      testreport accordingly
715    
716    checkpoint58e_post
717    o SEAICE_CGRID adjoint done
718    o R_STAR adjoint implemented.
719      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
720      * need to sort out init. of h0facc, etc.
721    o Make pkg/profile fully independent of ecco,cost, etc. stuff
722      to be able to use it in pure forward.
723    
724    checkpoint58d_post
725    o upgrade simple test-experiment to tutorial example:
726     step.1: duplicate the experiment and (step.2) will remove the old copy.
727      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
728      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
729      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
730      tutorial_global_oce_biogeo    <- copy of dic_example
731      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
732      tutorial_plume_on_slope       <- copy of plume_on_slope
733      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
734      tutorial_global_oce_optim     <- empty for now (David ?)
735      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
736     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
737    o correct a sign problem in cost_scat.F
738    o obcs and ptracers: fix boundary conditions for advections schemes
739      with larger stencil
740    o thsice adjoint: start
741    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
742      completeness
743    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
744      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
745    o ptracers adjoint:
746      * avoid extensive recomputatations
747      * fix missing re-init. of gptr (missed by TAF)
748    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
749      me to turn off the excessive output to STDOUT that this package produces
750    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
751      and add those terms in Vector-Invariant formulation.
752    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
753      if the control period (xx_hfluxperiod etc) is 0
754    o in profiles pkg, clean routines and fix details
755    o in ecco pkg, reading ssh data:
756      fix problem in case the model does not start at iter0=0
757    o fix mnc-pickup/restart for ptracers
758    o new package prifiles:
759      code to compute profile-based cost by Gael Forget
760      (modifs in ecco, ctrl, autodiff)
761    o Benign bug fix in initialization (spotted by M. Mazloff) of
762      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
763    
764    checkpoint58c_post
765    o adjoint: finish NLFS adjoint and provide reference output in
766      verification/global_ocean.90x40x15/results_ad_nlfs
767    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
768      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
769      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
770      with SEAICE_CGRID defined.
771    o move calendarDumps from "data" to "data.cal" and clean-up the code
772      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
773    o add useEXF & useCAL flags (for now, set in hard-coded way)
774    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
775      (were missing in NH mode, and wrong in quasihydrostatic mode).
776      waiting for Chris updated version of calc_gw to add those CALLs.
777    o fix bug in quasihydrostatic S/R ;
778      add a test for this option: global_ocean.90x40x15.qshyd
779    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
780      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
781    o add on/off flag useOffLine for package OFFLINE
782    o seaice:
783      - modify advection so that it works also on the C-grid
784      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
785        problem in multi-tile runs with C-grid
786      - add flags for clipping ice velocities and/or masking solver forcing
787      - fix drag (ocean on ice) formulation and a bug that caused noise in the
788        C-grid solver
789      - added a few comments to seaice_diffusion.F
790      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
791        are now exclusive)
792      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
793        required re-ordering the code a little:
794       + make DAIRN global variable (defined in SEAICE)
795       + move computation of the viscosities eta and zeta into a new separate
796         routine (because I need to recompute them in seaice_ocean_stress.F)
797    
798    checkpoint58b_post
799    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
800      update output.txt of exp. aim.5l_cs.thSI
801    o various mnc cleanups and improvements:
802      + shrink lookup tables by factor of ~4
803      + better error reporting when running out of lookup space
804      + able to handle longer path/file names (up to 500 chars)
805    o adjoint:
806      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
807      - TBD: "hidden" mom_vecinv recomp. in dynamics
808    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
809     (allow to differentiate between forcing components using new integer flags:
810      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
811     and add new flag to put Dissipation tendency out of Adams-Bashforth.
812    o ecco
813      - enable trend removal from SSH anomaly obs.
814    o adjoint
815      - a fix for PmEpR when #undef EXACT_CONSERV
816      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
817      - try to fix "hidden" recomp. in forward_step for NLFS
818        (NLFS seems broken sometimes after I checked it in)
819    o seaice:
820     - add c-grid version of the dynamic solver:
821       + three new routines that are the c-grid substitute lsr, dynsolver
822         and ostres
823       + put a few fields that were local to dynsolver into global common
824         blocks, so that I can move the computation of stresses etc into
825         seaice_lsr (saves coding but may break the adjoint).
826     - replace more hardwired parameters by runtime parameters
827     - add ice masks that mask the rhs of the implicit solvers where there
828       is no ice (commented out in seaice_dynsolver, because i am not sure
829       if this works properly), eventually this should replace the clipping
830       of ice velocities in seaice_dynsolver to +/-40cm/s.
831    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
832      include it only where its needed
833    o move balancing of fluxes before the call of external_forcing_surf
834    o seaice:
835      - correct units of turning angles (now they are really in degrees)
836      - move computation of GWATX/Y out of main routine into dynsolver
837      - initialize GWATX/Y in seaice_init
838    o Apply mask on Fresh-Water flux (needed for SSH forcing).
839      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
840    o seaice: add runtime flags for turning angles (default to zero)
841    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
842      and trend from exf forcing and ctrl control adjustments
843    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
844      (since checkpoint57x_post)
845    o change the default rotation period to 86164.s = the Earth rotation
846    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
847      and based on a reference stratification. Tested within hs94.cs-32x32x5.
848    o seaice advection: add code for choosing between the default (2nd order
849      central differences) and multiDim advection schemes provided by
850      pkg/generic_advdiff
851    o seaice:
852      - removed all references to SEAICE_GRID.h fields from
853        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
854        (cubed-sphere configuration will change a little)
855      - grid computations in seaice_init are obsolete now.
856      - cleaned up code a little so that is easier to read (hopefully).
857      - added new (better?) discretizations of default advection and diffusion
858        (turn on with SEAICEuseFluxForm)
859      - replace 1 in 3d global fields by kSurface in growth.F
860      
861    checkpoint58a_post
862    o seaice:
863      - bug fix in advect.F
864    o shelfice:
865      - separate shelfice load anomaly from pload (breaks with time
866        dependent forcing), => introduce constant field shelficeLoadAnomaly.
867        Its default is 0., but it may be computed more cleverly from (unknown)
868        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
869        done offline. A good approximation of the pressure load anomaly is
870        necessary to avoid large initial adjustment processes underneath
871        deep-reaching shelfice.
872      - small fix in ISOMIP shelfice_thermodynamics
873      - add more sophisticated thermodynamics of Hellmer (1989), this is
874        now the default
875      - give a few constants more intuitive names
876    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
877      if bulk formulae are used in long integration (especially EmPmR). Turn
878      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
879      if balancePrintMean, the imbalance that is substracted is printed to
880      STDOUT.
881    o fix bug (typo) in obcs_apply_eta.F
882    o add a new package shelfice which enables us to model the circulation
883      underneath shelf-ice with draughts of hundreds of meters.
884     - works
885     - to do: + include improved thermodynamics
886              + check whether kSurfC (from model/inc/SURFACE.h) can be used
887                instead of new field kTopC
888              + can we use topoFile, Ro_surf and existing code in ini_depth.F
889                instead of new field R_shelfIce and new code in ini_depth.F
890                and ini_mask_etc.F?
891              + adjust vertical mixing schemes?
892    o seaice pkg:
893     - add a cpp-flag to include a simple formula for a salinity dependent
894       freezing point of sea water at the surface
895     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
896       meridional stresses are now different (and hopefully correct)
897    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
898       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
899       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
900    o pkg/diagnostics: add options and parameters for regional-statistics
901       diagnostics ; define regions by reading a region-mask from a file
902       (might add other options later)
903    o pkg/bulk_force:
904     - add option and parameters to use AIM surface-flux formulae.
905     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
906       others forcing fields (defined in PARM05, parameter file "data") are loaded
907       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
908     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
909     - use the right EXCH call for uwind,vwind (to work on CS-grid).
910     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
911       and parameters (note: calcWindStress replaces .NOT.readwindstress).
912     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
913    
914    checkpoint58
915    o add "--embed-source" option to genmake2 which, when the supporting
916      tools can be compiled (as determined by genmake2) will turn on the
917      embed_files package which then embeds the entire MITgcm source code
918      (*.[fFhc] + Makefile) used for the build within the executable
919      - requested by CNH but off by default
920      - adds a paltry <9MB to the mitgcmuv executable in most cases
921      - only writes the output when useEMBEDSRC in eedata is true
922    o clean up 3-dim. relaxation codes:
923      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
924      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
925      * Thanks to Tom Haine for testing!
926    
927    checkpoint57z_post
928    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
929      affects output (@ truncation level) of exp. plume_on_slope ; updated.
930    o fix the pickup behavior for obcs in combination with ptracers
931    o fix a bug in ptracers_external_fields_load
932    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
933      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
934    o transfered surface NH pressure to eta field (if exactConserv).
935    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
936         and update lab_sea output.txt file.
937    o completing 3-dim. relaxation code: additional term
938         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
939      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
940      * At compile time, in "EXF_OPTIONS.h" set
941          #define  ALLOW_CLIMTEMP_RELAXATION
942          #define  ALLOW_CLIMSALT_RELAXATION
943      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
944          tauThetaClimRelax3Dim = 15552000.0,
945          tauSaltClimRelax3Dim  = 15552000.0,
946      * 3 cases:
947          1) Use a constant-in-time 3-dim. field
948          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
949          3) Real-time relax. to time-evolving prescribed field
950    o Adding Laplacian-type smoothness constraint on
951      initial and boundary (forcing) controls (ic, bc)
952      * enable at compile-time via
953        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
954      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
955      * Absolute scale somewhat unclear so far
956      * no area weighting was included since no other cost term does so far
957    
958    checkpoint57y_post
959    First step for a NLFS adjoint
960    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
961    o new init. routines for calc_r_star, calc_surf_dr
962    o still need to deal with ini_masks_etc
963    o testreport seemed happy
964    checkpoint57y_pre
965    
966    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
967    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
968    o add new offset feature to offline pkg (plus minor cleanup)
969    o cfc fixes for final year of integration
970    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
971      be in GCHEM_OPTIONS).
972    
973    checkpoint57x_post
974    o fix testreport Pb in multiple test experiment.
975    o cleanup our namelist syntax in verification:
976      - make it more F95 standards compliant (some work still needed)
977      - allows the vast majority of our tests to work with gfortran
978    o Non-Hydrostatic:
979     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
980     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
981    o Allow to apply AB on T,S rather than on AB(gT,gS):
982     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
983     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
984       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
985     - need a "clever" read_pickup to restart from the other AB formulation
986    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
987    o remove some unused variables (reduces number of compiler warnings)
988    o adjoint
989      * Disable useVariableViscosity for adjoint for time being
990        (there are a number of extensive recomputations)
991      * Initialize certain variables needed for adjoint
992    
993    checkpoint57w_post
994    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
995                 fix the singleCpuIO RS version of MDSWRITEFIELD
996       and add a WARNING if using globalFiles=T with multi-processors.
997    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
998      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
999    o tracer advection scheme:
1000      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1001       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1002       was not very convenient).
1003      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1004       (further tests needed for the implicit DST & Flux-Limiter schemes).
1005    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1006      and sRef for convenience, handy, when you want to initialize
1007      ptracers in a large domain with a constant non-zero value. Also,
1008      untangle ptracers_init.F a little.
1009    
1010    checkpoint57v_post
1011    o change dome exp. to use variable viscosity in side-drag terms.
1012    o remove all the files from the cfc_offline test since they are now
1013      incorporated into tutorial_cfc_offline which has been producing
1014      identical results for a few days of testing
1015    o add new parameter: sideDragFactor to enable half-slip-side BC
1016      and change side-drag S/R to use viscosity from mom_calc_visc
1017      (can switch back by setting sideDragFactor=0.); affects results at
1018      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1019       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1020    o vorticity & strain are now computed without masking, to account for
1021      no-slip-side BC in variable viscosity calculation ; mask is applied
1022      anyway later on, before computing advection/coriolis terms.
1023    o modify exp4 to test new obcs support for reading from external files
1024      and for passive tracers
1025    o fix behavior of ptracers_monitor when monitor output is written to a
1026      netcdf-file; still not independent of monitor.F (writes in the same
1027      file).
1028    o change default value of tRef (put a uniform, meaningful value for ocean
1029      & atmos) and initialize sRef (was missing, as Martin mentioned).
1030    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1031      to be proportional to enstrophy dissipation length.  Thus,
1032       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1033      This is now consistent with Smagorinsky and with the manual.
1034    
1035    checkpoint57u_post
1036    o OBCS and PTRACERS: add open boundary support for passive tracers
1037      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1038        OB-values from file; this is not different from the way theta and salinity
1039        are treated
1040      - however, Orlanski-radiation conditions are not supported, and the model
1041        will stop if you use pTracers and Orlanski at the same time.
1042      - beefed up the rountine obcs_external_fields_load: now only those open
1043        boundary values are overwritten with values from files for which there
1044        are really files, otherwise the OB-fields remain untouched. This makes
1045        it possible to use different OBs at different ends of the domain (as
1046        with EXF)
1047    o reduce number of exch calls in shap_filt (s2).
1048    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1049      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1050    
1051    checkpoint57t_post
1052    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1053    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1054      same truncation, independent of the face number: affects affects several
1055      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1056    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1057      note that biharmonic viscosity + no-slip was not tested in any experiment.
1058    o fix bug in non-linear free-surf side-drag ; generate new output for
1059      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1060    o make mnc honor the writeBinaryPrec flag for most kinds of output
1061    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1062    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1063      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1064    o add brackets in multi-terms sum to get same truncation, independent of
1065      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1066      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1067    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1068      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1069      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1070      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1071      Suggested values of viscosity parameters found in mom_calc_visc.
1072      Many new viscosity diagnostics available.
1073    
1074    checkpoint57s_post
1075    o Add clearing-house for viscosity calculations, mom_calc_visc and
1076      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1077      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1078      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1079      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1080      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1081      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1082      ViscAhStrain and viscAhTension are now retired.
1083    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1084    o In response to JMC's bug report, genmake2 now ignores any soft-links
1085      that it finds in the *current* directory when searching for files.
1086      Soft-links found in any other source directories will still work as
1087      they did before.
1088    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1089      a C routine to unlimit the stack size
1090    o mnc-ify pkg/aim snapshot vars
1091    o mnc-ify pkg/land as requested by Daniel
1092    o various changes to mnc including:
1093      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1094      - output can now be grouped so that all files within a group
1095          change the ITER portion of their names in lock-step together
1096      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1097          and works with both EXCH1 and EXCH2 (but needs more testing)
1098      - writing works for all verification test cases w/ g77 on Linux
1099    
1100    checkpoint57r_post
1101    o make MNC variable initialization happen earlier
1102    o add diagnostics for (almost) each term of the momentum Eq.
1103    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1104    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1105    o remove MINIMAL_TAVE_OUTPUT option ;
1106      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1107    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1108      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1109    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1110    o add time-dependent SST, SSS control
1111    o cost terms in ecco/ modularized (new cost_generic.F)
1112    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1113    o new infrastructure for seaice model vs. obs misfits in seaice/
1114      * driver from the_main_loop.F is seaice_cost_driver.F
1115      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1116      * gradient check in Exp. 6a of natl_box_adjoint/
1117    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1118      (see README file)
1119    
1120    checkpoint57q_post
1121    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1122    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1123      - bug was reported by Jean-Michel and Ian Fenty
1124    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1125      update exp. cpl_aim+ocn output.
1126    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1127      Needed for high-res. runs with large global files
1128      to be able to limit tapelev size
1129    o Changed some tests for adjoint:
1130      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1131      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1132      * global_ocean.90x40x15/ back to default 3-level checkpointing
1133    o Modifications to enable scripted COMMON to MODULE conversion
1134      * verification/OpenAD/code/ has necessary scripts and description;
1135      * converts, compiles and runs successfully;
1136    
1137    checkpoint57p_post
1138    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1139    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1140      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1141    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1142    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1143      (was already the case for dissipation with mom_vecinv,
1144       and also the case for grad.PhiHyd when staggered-timeStep)
1145      This will allow to put dissipation out-off the AB time-stepping.
1146     Unfortunately, affects truncation error. Update output of exp. that "fails"
1147      (cg2d matching number) and leave the others for later: front_relax(10),
1148      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1149      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1150    
1151    checkpoint57o_post
1152    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1153      (2) its ready to be documented during the 20050801 DocFest
1154    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1155      for ideal_2D_oce and lab_sea on linux_ia32_g77
1156    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1157      in global1x1_tot/code_seaice_adj to access indices 32, 33
1158      (worth another tag)
1159    
1160    checkpoint57n_post
1161    o adding precip control xx_precip 32
1162    o adding swflux control xx_swflux 33
1163    o Replacing 10 forcing penalty cost routines by 1 generic.
1164    o Implementing partitioning in time-mean and variable adjustment
1165      for atmos. state.
1166    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1167    o in natl_box_adjoint:
1168      * updated exp 1 to 10
1169        (but does not have time-mean vs. variable split results yet)
1170    o updated global1x1/*_seaice_adj/
1171      to incorporate latest changes
1172    o enable useSingleCpuIO for mdsio vector routines
1173      (applies in particular to tapelev I/O)
1174    o removed inefficient K-loop in all active_file*control*.F
1175    
1176    checkpoint57m_post
1177    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1178      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1179    o pkg/exch2: filling of face-corner halo regions is optional
1180      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1181    
1182    checkpoint57l_post
1183     tag before updating tutorials (pre-release-2)
1184    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1185       for output and interpolation of input fields onto model grid)
1186    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1187       Affects results of exp. rotating_tank ; update output.txt.
1188    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1189          and taking the square quantity and/or using a fraction-weight field.
1190    o fix aim_diagnostics_init.F mate numbers.
1191    o add mnc output capability to diagnostics/diagstat and update
1192      our cvsignore files for the ACSII output generated
1193    
1194    checkpoint57k_post
1195    o lab_sea now uses diagnostics package and provides a suite of
1196      new EXF diagnostics output.
1197    
1198    checkpoint57j_post
1199    o exf
1200      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1201        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1202        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1203      * extended diagnostics output
1204        - now includes all EXF variables
1205        - hs, hl moved to common block
1206        - separate S/R for diagnostics, called after ctrl vector is added
1207        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1208        - EXFqnet contains true Qnet (i.e. includes qsw)
1209      * updated verif. lab_sea, global_with_exf
1210      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1211        to ensure that diagnostics sees a true EXFqnet
1212    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1213    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1214      several times with different frequencies.
1215    o mnc-ify the thsice package as requested by Daniel Enderton
1216      - the monitor--MNC output needs work
1217      - many attributes need to be added (most are currently blank)
1218    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1219      - many attributes need to be added (most are currently blank)
1220    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1221    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1222    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1223      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1224         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1225    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1226     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1227    
1228    checkpoint57i_post
1229    o Diagnostics package was changed: diagnostic allocation is now deactivated
1230      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1231    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1232      add 1rst Order upwind vertical Shear.
1233    o add a quick fix for A/B checkpointing in OFFLINE mode
1234    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1235      end-run around the C/Fortran linking horror in eesup/src/timers.F
1236    o added pkg/runclock: allows user to terminate run based on wall clock
1237    o added non-hydrostatic scaling parameter: nh_am2
1238    o pkg/my82: futile attempt to make results compiler-independent by adding
1239      some "_d 0", etc. no effect.
1240    o for mnc output, fill the 'T' coordinate var with myTime and create a
1241      separate 'iter' variable for iteration count
1242    o pkg/diagnostics:
1243      add new capability: output of Global/Regional & per-level statistics ;
1244      tested against monitor output (including land & thSIce) on various exp.
1245    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1246    
1247    checkpoint57h_done
1248      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1249      data.diagnostics, data.gchem, data.ptracers) is done.
1250    
1251    o pkg/diagnostics: prepare for Global/Regional statistics.
1252      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1253    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1254      and rename it: DIFFERENT_MULTIPLE
1255    
1256    checkpoint57h_post
1257    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1258    o pkg/diagnostics: change output frequency, now in seconds (instead
1259      of Nb of iterations). This requires to change data.diagnostics.
1260    checkpoint57h_pre
1261    
1262    o in mnc, let the user create the output dir if both mnc_outdir_date
1263      and mnc_outdir_num are false
1264    o add fflags() to pkg/diagnostics which allows one to specify, on a
1265      per-file basis, the file precision [default behavior is unchanged]
1266    o added diagnostics to pkg/kpp, including computation of mixed layer
1267      depth based on a temperature/density criterion
1268    o updated verification/natl_box to test the new pkg/kpp diagnostics
1269    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1270    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1271    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1272      not mnc -- this mistake was found by JMC and is now corrected
1273    
1274    checkpoint57g_post
1275    o add Adams-Bashforth 3rd Order time stepping:
1276      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1277      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1278    checkpoint57g_pre
1279    
1280    o make lambda[Theta,Salt]ClimRelax spatially varying
1281      (default remains spatially uniform constant based on tau)
1282    o added new control variables
1283      * init. uVel, vVel, etanN
1284      * lambda[Theta,Salt]ClimRelax
1285    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1286      (suggested by G. Forget)
1287    
1288    checkpoint57f_post
1289    o add parameter "baseTime" = model base time = time at iteration zero
1290      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1291      account for baseTime shift
1292    o move Coriolis arrays from PARAMS.h to GRID.h
1293    checkpoint57f_pre
1294    
1295    o mnc-ifying the seaice package
1296    o introduced an alternative length scale calculation for use in the limiting
1297      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1298    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1299    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1300      as well as grad(vort3).  Made it compatible with both approximate form
1301      for the cubed sphere and full form of these gradients.  Added flag
1302      useFullLeith to select between approximate and full form.  
1303    o add "d0" in getcon.F to reduce differences between compilers/platforms
1304      update output.txt of exp. fizhi-gridalt-hs
1305    o change port_rand funtion to allow to set the seed.
1306    o fix obscure MNC bug involving conversion between reals and integers
1307      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1308        new version is now more standards-compliant
1309    o adjoint-related modifications
1310      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1311      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1312      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1313    
1314    checkpoint57e_post
1315    o Adding eddy stress controls a la Ferreira et al.
1316    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1317    
1318    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1319      update output.txt of exp. fizhi-gridalt-hs
1320    o add more "Z" dimensions and associated coordinate vars to MNC
1321    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1322    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1323      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1324      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1325      months and years.  Requires pkg/cal.
1326    o diagnostics: add pickup functionality
1327      - off by default for backwards compatibility
1328      - current version only uses MDSIO -- MNC will be added
1329    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1330    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1331    
1332    checkpoint57d_post
1333    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1334    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1335      output from the diagnostics package
1336    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1337    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1338      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1339    o add coordinate variables to the MNC output from the diagnostics package
1340    o change MNC-flags default value: true when useMNC=TRUE
1341    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1342      the ability (off by default) to read the grid information using MNC
1343    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1344    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1345    o do snap-shot diagnostics at the middle of the time-interval (instead of
1346      at the end).
1347    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1348      new test for AIM with thSIce + slab-ocean
1349    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1350    o move state variable diagnostics to the beginning of the time step ;
1351      (note: still needs some work specially for snap-shot diagnostics)
1352      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1353    
1354    checkpoint57c_post
1355    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1356    o generate new output.txt files on faulks with g77 & the new -ieee option
1357    checkpoint57c_pre
1358    
1359    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1360      update output.txt of exp. global_ocean.90x40x15
1361    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1362      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1363    o add saltFlux(+File) forcing capability with periodicExternalForcing
1364    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1365    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1366    o improvements for the MNC output from DIAGNOSTICS:
1367      - correct handling of the unlimitied dimension
1368      - all dims now have associated coordinate variables
1369      - variables located at U, V, and Corner ("Z") points are now written
1370        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1371        *all* data points are output
1372    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1373    o added pkg/seaice/seaice_monitor.F
1374    o mdsio_readfield.F can now read files visible only to master MPI process.
1375    o pkg/seaice: some test code for ice-modified ocean stress
1376    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1377      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1378      spurious negative numbers for precipitation and humidity.  Will cause
1379      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1380    o pkg/ctrl/
1381      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1382        May be enabled via doPackDiag
1383      *  introduce z-scaling of
1384         + gradient (doZscalePack) and
1385         + control (doZscaleUnpack)
1386    o pkg/mdsio/
1387      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1388      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1389    
1390    checkpoint57b_post
1391    o simplify options in diagnostics_fill arguments (remove weird combinations)
1392    o fix MNC coordinate variables so that they now contain per-face index
1393      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1394      general, EXCH2 grids are only aligned to a "local" coordinate system
1395    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1396    o Implement instantaneous output within pkg diagnostics:
1397      setting a negative frequency in data.diagnostics produces
1398     "snap-shot" output (as opposed to time-average if freq > 0)
1399    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1400      NOTE: change ptracer diagnostics name: use 2 characters to work with
1401            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1402    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1403      becomes the coordinate variable for the 'T' dimension
1404    o add CF-style coordinate variables to MNC
1405      - just a first cut:  numbers are meaningless on the cubesphere and
1406        missing along the T axis but otherwise it works!
1407    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1408    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1409    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1410      this is based directly on what the model compute, so that the content of
1411      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1412    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1413    o clean up build options files for SunOS, in particular
1414      - remove -traditional from xmakedepend
1415      - change -xarch=v9 to -xarch=native for f77
1416      - restore use of make (not gmake)
1417      - add CC=gcc if using g77
1418    o changes per discussion of AM, JMC, & EH3 today:
1419      - move redundant "grid" variables out of "state" -- in preparation of
1420        creating proper CF-style coordinate variables and in recognition
1421        that any/all grid variables can be easily copied (eg. w/NCO) from
1422        the grid files into any of the other NetCDF files
1423      - *always* output grid variables with MDSIO (this will eventually be
1424        changed)
1425      - output MNC grid file if useMNC is true
1426    o every instance of _END_MASTER() has been found and replaced with
1427      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1428      preprocessors
1429    o re-arrange diagnostics pkg initialisation:
1430     - allow each package to extend the available diagnostics list
1431     - add some checking and fix small problems (multi-threaded, ...)
1432     - new S/R diagnostics_fill (replace fill_diagnostics):
1433       look through the short list of active diag. (instead of the long list)
1434       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1435    
1436    checkpoint57a_post
1437    o this set of changes restores TAMC compatibility
1438      tested for global_ocean.90x40x15 adjoint on trough
1439      (what a pain)
1440    
1441    checkpoint57a_pre
1442    o some modifs in tools/build_options for sunos
1443    o call ctrl_pack for ctrl at end for optimcycle=0
1444    
1445    checkpoint57
1446    o add horizontal bi-harmonic viscosity for vertical velocity
1447      - new parameter viscA4W (defaults to viscA4)
1448      - affects only non-hydrostatic code
1449      - to be done: no-slip lateral boundary conditions
1450    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1451    o implement Implicit Vertical advection for pTracers
1452    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1453      (implemented also for implicit vertical diffusion & advection)
1454    o OBCS: extend application of tracer open boundary conditions
1455      to a strip beyond the boundary of width Olx/Oly
1456    o add call monitor to TAF set of required calls (flow directives)
1457      and include in natl_box_adjoint
1458    o untangle a few ifdefs related to cost, ctrl, autodiff
1459      untangel a few ALLOW_ECCO_OPTIMIZATION
1460    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1461      (theta2, salt2 in ecco_cost_weights)
1462    
1463    checkpoint56c_post
1464    o OBCS as control variables
1465      - update ctrl_ad_diff.list, obcs_ad_diff.list
1466      - remove balance of obcs controls from default
1467      - fix index bug nobcs in ctrl_init
1468      - fix dummy fields filen in ctrl_pack
1469      - add dummy weights for obcs
1470    o lsopt: comment out fort.94 output
1471    o optim:
1472      - remove unnecessary header files
1473      - adjusted namelists
1474      - add xerbla.F to Makefile
1475    o exf:
1476      - multiple modifications of exf_check_range
1477      - unit change in exf_init_runoff from [m/year] to [m/s]
1478    o mdsio:
1479      - i/o-vector change debugLevel from debLevA to debLevB
1480    
1481    checkpoint56b_post
1482    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1483      is called from DO_THE_MODEL_IO
1484      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1485      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1486      - clean up PTRACERS_WRITE_TIMEAVE a little
1487    o add another verification experiment that tests both the cfc-pkg and
1488      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1489      reactive tendencies treated inline with regular timestepping
1490    o testreport previously did a lousy job of comparing small numbers, so
1491      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1492      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1493      testreport.
1494    o ptracers_monitor: bug fix for MPI
1495    
1496    checkpoint56a_post
1497    o GCHEM: finish reorganizating the package
1498      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1499        (introduces another 3D-array for each passive tracer, but only if
1500        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1501        gchemTendency is not needed because the timestep is done separately)
1502      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1503      - GCHEM is now---more or less cleanly---separate from PTRACERS
1504      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1505        so clear to me how that should be done in a general way.
1506    o CFC: improve formatting of output in CFC_ATMOS
1507    o PTRACERS:
1508      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1509        that ALL experiments with ptracers enable can be checked. This makes
1510        GCHEM_MONITOR obsolete.
1511      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1512        monitorFreq
1513      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1514    o add PTRACERS (PTR0[1-5]) to testreport output
1515    o exf_check_range:
1516      * default changed to .TRUE.
1517      * will check values for niter0 if debLevA, every timestep if debLevB
1518      * STOP in exf_check_range if 'out of range'
1519      * range chosen generous to allow for potential extema
1520      TBD: a version with stricter range
1521           permitted range would be runtime parameters
1522    o GMredi:
1523      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1524      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1525      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1526    o GCHEM:
1527      - move call to GCHEM_FORCING_SEP, so that it is now called before
1528        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1529      - introduced a useGCHEM runtime flag and applied it everywhere.
1530      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1531        this flag is now only visible within GCHEM-pkg routines.
1532      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1533        be replaced by a 3D array that is computed before thermodynamics; for
1534        this, the tracer ID iTracer had to be included into the parameter list
1535        of ptracers_forcing
1536      - set up forward_step to call gchem_forcing, that will replace
1537        gchem_forcing_int in ptracers_forcing
1538      - cleaning up
1539    o small cleaning of exch2: remove files that are also in eesupp/src
1540    
1541    checkpoint56
1542    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1543    o mnc: cleanup "full" files--fixes out-of-memory problem
1544    o ECCO-GODAE
1545      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1546      * fully merged and updated from SIO code
1547        windstress sign change affects
1548        - exf_inscal_[u/v]stress
1549        - sign of xx_tau[u/v] adjustments
1550        - signs in cost_scat
1551      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1552      * natl_box_adjoint updated and compressed
1553      * 2-level checkpoint switch added
1554        (tested in EXP. 1 of natl_box_adjoint)
1555      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1556    o SVD
1557      * first complete, non-hacked version for SVD calculations
1558      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1559        performed via direct access files admtlm_vector.it????
1560        (via ctrl_[un]pack)
1561      * optimcycle is used for ARPACK iteration counter
1562        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1563      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1564        and add linear transforms where necessary
1565      * controls are initial/final SST, SSS (can be extended; need to check
1566        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1567    o mdsio: filename info to both stderr, stdout
1568    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1569      from sign change
1570    
1571    checkpoint55j_post
1572    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1573      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1574    o add consistent build directories and .cvsignore files to verification
1575    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1576    o make all subroutines 30 or less characters in length for certain older
1577      compilers to work (a thorough search only turns up two routines in
1578      pkg/ptracers)
1579    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1580      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1581    
1582    checkpoint55i_post
1583    o change arrays for total vertical diffusivity (2.D if explicit,
1584      3.D if implicit) ; each ptracer uses its own background value.
1585    o added mnc/NetCDF output capability to ocn_compon_interf
1586      - added bits to verification/cpl_aim+ocn so that it can run on
1587        ITRDA and other clusters without the mpirun "-wd" option
1588    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1589      configuration
1590    o give MNC the ability to create additional files rather than
1591      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1592      - the default is just less than 2GB which is a practical limit
1593        on many systems
1594    o Compute the non-local term using either KPP vertical diffusivity (=default)
1595       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1596    
1597    checkpoint55h_post
1598    o add verification test "vermix"
1599    o remove all the *_ioinc flags and replace with the single global
1600      outputTypesInclusive flag
1601    o allow to set a vertical profile of vertical diffusivity for T & S
1602    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1603    o useMNC moved from data.mnc to data.pkg
1604    
1605    checkpoint55g_post
1606    o Renaming carbon AD experiments to comply with testreport conventions
1607    o Updating adjoint of Held-Suarez hs94.1x64x5
1608    o Fixing directives for non-ECCO forward_step, after ECCO directives
1609      have been fixed to avoid recomp. of do_oceanic_phys
1610      Works well for global_ocean.90x40x15,
1611      but recomp. issue remains for carbon
1612    o Updating adjoint output for natl_box_adjoint after
1613      pkg/ecco has been modified (see taga c55d_post)
1614    
1615    checkpoint55f_post
1616    o rename to timeave_init_fixed
1617    
1618    checkpoint55e_post
1619    o some delicate re-shuffle of store directives to avoid one
1620      extra call of do_oceanic_physics
1621      affects ecco_the_main_loop.F, do_oceanic_physics.F
1622      checkpoint_lev1_directives.h
1623    o NB: this may break global_ocean adjoint temporarily,
1624      but it is clear how to fix it. Will do later, need this now.
1625    
1626    checkpoint55d_post
1627    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1628    o ecco_cost_weights is modified to 1x1 runs
1629    o modifs to allow observations to be read in as
1630      single file or yearly files
1631    o enable to read exf forcing fields as either
1632      single file or yearly files (flag useExfYearlyFields)
1633    checkpoint55d_pre
1634    
1635    o switch between 2-level and 3-level checkpointing
1636    o add ability of MNC to write local and "partial" (eg. 2D slices where
1637      the full 3D field is never actually stored) arrays to NetCDF files
1638      with the correct (that is, the complete multi-dimensional) set of
1639      array indicies
1640      - used in mom_vecinv() to write the diagFreq output
1641      - tested (demonstrated) in verification/aim.5l_cs
1642    o further mnc-ification
1643      - add verification/lab_sea to the list with mnc setups
1644      - fix undefined mnc v-names in cd_code
1645      - add kpp to mnc output (both snapshot and timeave)
1646    o non-hydrostatic code
1647      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1648        in calc_gw.F
1649      - defaults to viscAh
1650      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1651        friction or Leith) in non-hydrostatic mode, as long as there is
1652        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1653    o pkg/cost
1654      extend simple cost functions to treat time mean quantities
1655      (T,U,V) via cost_accumulate_state from cost_tile
1656    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1657        be 2 times larger than the minimum size the advection scheme requires.
1658        now get a perfect conservation of salt in advect_cs test-exp (updated)
1659    o GGL90 (Gaspar's TKE mixed layer)
1660      - add horizontal diffusion of TKE, requires exchanges in
1661        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1662        default. In OPA there is no horizontal diffusion of TKE but the
1663        mixing coefficients are computed from a horizontal average of TKE of
1664        6 points or so. I think that diffusion has a little more physical
1665        justification.
1666      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1667        was in vain)
1668      - mask tke-variable in ggl90_init
1669    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1670    o fix biharmonic diffusion on CS-grid.
1671    o more obcs stuff
1672      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1673        for reading boundary values. This routine is called from
1674        obcs_prescribe_read
1675      - updated obcs_check
1676      - changed sponge layer relaxation parameter units for days to seconds
1677      - turned off sponge layer by default
1678      - changed argument list of OBCS_CALC to myTime+deltaTclock
1679      - fixed about 35 bugs in obcs_external_fields_load
1680    
1681    checkpoint55c_post
1682    o obcs stuff
1683      - new runtime flags useOBCSprescribe, useOBCSbalance
1684      - re-arranged obcs_calc
1685      - moved exf_getobcs to obcs_prescibe_read
1686        obcs_prescibe_read is called after ORLANSKI stuff
1687        and independent of it (executable can contain all).
1688      - updated obcs_check
1689      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1690        These may be necessary only if tangential velocities are
1691        prescribed at OB, not sure, needs testing.
1692    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1693      which simplifies the calls and passes the ifc check-bounds test
1694    
1695    checkpoint55b_post
1696    o add a 2D scalar, Z location, exchange_2 routine.
1697    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1698      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1699      affects advect_cs results (for the wrong reason): update output.txt
1700    o use a more standard discretization for biharmonic viscosity ;
1701     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1702      affects results of dome set-up: update output.txt
1703    o fix gad_advection.F (CubedSphere part), back to version 1.23
1704    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1705    
1706    checkpoint55a_post
1707    o merged code to
1708      * prescribe/read time-dependent open boundaries
1709        (works in conjunction with exf, cal)
1710      * sponge layer code for open boundaries
1711      * each boundary N/S/E/W now has its own CPP option
1712        (healthy for the adjoint)
1713    
1714    checkpoint55
1715    o up-to-date adjoint of previous breaks
1716      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1717      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1718      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1719      - carbon: * remove tr1-related adjoint verification
1720                * add ptracer as control variable
1721    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1722      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1723    
1724    checkpoint54f_post
1725    o in verification/carbin/ remove experiment related to
1726      ALLOW_PASSIVE_TRACER (array tr1 etc)
1727      code_ad/ input_ad/ results_ad
1728    
1729    o add two new packages
1730      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1731        + subject to optimization (memory)
1732      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1733        + subject to reordering (many GOTOs in the original code)
1734        + so far opps is called for every (i,j) point, and then operates in
1735          the vertical; one may want to reorder the scheme in order operate in
1736          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1737          fields)
1738    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1739      - all verification tests compile and run with linux_ia32_g77
1740      - defaults are compatible with current input files--nothing
1741        should change if you were not previously using MNC
1742      - MNC output has been added in numerous places (eg. timeave)
1743        but there are still a few writes not yet do-able with MNC
1744        (this is in progress)
1745      - flags now allow for either/or/both use of MDSIO and MNC and
1746        documentation will soon follow
1747      - numerous small formatting cleanups for ProTeX
1748    o add version info (via BUILD_INFO.h) to MNC and stdout
1749    
1750    checkpoint54e_post
1751    o add two new packages
1752      - pp81 (Packanowski and Philander, 1981), Richardson number and
1753        stratification dependent mixing
1754      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1755      - these scheme operate in a similar manner as KPP (without ghat, of
1756        course), however there is only one diffusivity that is used for both
1757        temperature and salinity (and passive tracers)ç
1758    o add offline package
1759    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1760      provided by Stephanie Dutkiewicz
1761    o genmake2: add ability to search for C compilers and cleanup test output
1762      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1763    
1764    checkpoint54d_post
1765    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1766    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1767      leading to additional shift by 5 days each year of integration
1768       (i.e. leading to considerable offset over the years)
1769    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1770    o start with no AB and no initial filtering (staggerTimeStep):
1771      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1772    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1773      (external loading & cpl import/export stay in forward_step.F)
1774    o update coupling interface to work with new staggerTimeStep
1775    o change MDSIO ptracers_pickup.
1776    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1777    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1778    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1779    
1780    checkpoint54c_post
1781    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1782      this affects (truncation error) output.txt of test-exp:
1783       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1784    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1785    o change Qnet to always be the net heat flux, (+upward).
1786      affects (truncation error) output of natl_box exp.: updated
1787    o define the max number of passive tracers in PTRACERS_SIZE.h
1788    o start to test mnc routinely in exp0
1789    o add sea-ice loading (sIceLoad) as a new forcing field.
1790    
1791    checkpoint54b_post
1792    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1793       impressive on Altix and Opteron systems)
1794    o diagnostics can now write NetCDF files through the mnc package
1795    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1796    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1797    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1798      affects (truncation error) output of lab_sea & natl_box exp.: updated
1799    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1800    
1801    checkpoint54a_post
1802    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1803    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1804    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1805    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1806      + internal_wave (shift in writing cg2d_ini_res)
1807    checkpoint54a_pre
1808    
1809    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1810      - modified verification/lab_sea and natl_box_adjoint accordingly
1811    
1812    checkpoint54
1813    checkpoint53g_post
1814    o prepare splitting of thermodynamics: store convect.counter in common block
1815    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1816      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1817    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1818    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1819    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1820    o restore adjointability
1821    
1822    checkpoint53f_post
1823    o modifications that affect AIM experiment results (update output.txt):
1824      - no advection of S at top interface Nr (pkg/generic_advdiff)
1825      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1826    o AIM pkg:
1827      - include stability function into surf.Flux derivative relative to Tsurf
1828      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1829    
1830    checkpoint53e_post
1831    o merged cylindrical coord configuration
1832    o added rotating_tank experiment
1833    checkpoint53e_pre
1834    
1835    checkpoint53d_post
1836    o faulks upgraded: re-generate output.txt that have changed:
1837       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1838    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1839    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1840    o added Sadourny discretization of Coriolis
1841      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1842      - re-enabled use of omega3 (useAbsVorticity)
1843    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1844      vector-invariant equations
1845      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1846    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1847      hopefully without new bugs
1848      - still to do: biharmonic friction for non-hydrostatic w
1849    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1850    o regenerated output for global_ocean_ebm (using -ieee)
1851    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1852      of mom_common/
1853      - simple re-arrangement of instructions within computing loop
1854    checkpoint53d_pre
1855    
1856    checkpoint53c_post
1857    o new version of coupler for AIM+thSIce and Ocean models
1858     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1859     - land: change Evaporation of snow
1860     - aim with thSIce: fix bug in snow-precip.
1861    o changes to calc_gw.F
1862     - bug fix for w^2 term near the bottom boundary
1863     - (hopefully) improve the lateral slip boundary condtions for use with
1864        partial/looped cells
1865      - because the bug fix changes two verification experiments anyway (exp5
1866        and plume on slope), change the lateral boundary condition from half slip
1867        to the value of no_slip_sides
1868    o ebm package wasnt quite up to the parallel task. Fixed that.
1869    o Adjoint of EBM package + verification
1870      * TLM OK
1871      * ADM not sufficient accuracy yet (needs further testing)
1872    
1873    checkpoint53b_post
1874    o Commiting new energy balance model to repository
1875      * package is pkg/ebm
1876      * verif. is verification/global_ocean_ebm
1877      * references are in ebm_driver.F
1878    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1879    C        Global thermohaline circulation. Part I:
1880    C        Sensitivity to atmospheric moisture transport.
1881    C        J. Climate 12(1), 71-82
1882    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1883    C        Global thermohaline circulation. Part II:
1884    C        Sensitivity with interactive transport.
1885    C        J. Climate 12(1), 83-91
1886    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1887    C        Destabilization of the thermohaline circulation
1888    C        by atmospheric eddy transports.
1889    C        J. Climate 7(12), 1870-1882
1890    o Will need long integration testing.
1891    checkpoint53b_pre
1892    
1893    o created pkg/mom_common in preparation for variable viscosity code
1894    o renamed and split ini_mnc_io
1895    o pkg/land: only liquid water can diffuse or run-off
1896    o AIM using land: soil wetness availability account for snow
1897    o added printMapIncludesZeros to EEPARMS namelist
1898    
1899    checkpoint53a_post
1900    o restore TAMC compatiility for exf_constants.h
1901      (no usage of _d in .h)
1902    o Additional storing in KPP in an attempt to fix
1903      TAMC problem with adjoint of KPP code.
1904      (no success...)
1905      Identical code works fine with TAF.
1906    o Fixed verification/natl_box_adjoint experiments.
1907      Initial conditions for Experiments 4 and 5 are now
1908      set to "SEAICE_initialHEFF=0", which is more reasonable,
1909      and hence gives results closer to that of Experiment 2.
1910      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1911    
1912    checkpoint53
1913    o stable checkpoint with up to date adjoint
1914      TLM tests only run for 1st grdchk at the moment. Its unclear if
1915      this is a code problem or a problem with resetting code for g_
1916      variables that is being autogenerated wrong.
1917      Otherwise:
1918       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1919       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1920         are both still in chaos following their security messes.
1921    
1922    checkpoint52n_post
1923    o various build (mostly genmake2) changes including:
1924      - ability to build/run more easily within Cygwin and MacOS X
1925      - more complicated Makefiles with a stronger dependence on Gnu Make
1926    o pkg/seaice modifications
1927      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1928        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1929        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1930      - changed proxy for geostrophic velocity and updated
1931        verification/lab_sea/results/* accordingly
1932      - removed ADI dynamic solver from pkg/seaice
1933      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1934        they caused a segmentation fault under certain circumstances
1935      - removed unused field WATR
1936    o bug fix in exf-package:
1937      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1938         now reflect that.
1939    o small fixes in the cal-package:
1940      - set reference date to first of January for the 'model'-calendar
1941      - failing of cal_CheckDate in cal_FullDate now actually results in a
1942        warning
1943    o small modifications in exf-package to increase flexibility:
1944      - change climtempfreeze from a constant to a runtime parameter that
1945        is specified in data.exf_clim (default = -1.9)
1946      - introduce runtime parameter windstressmax (default = 2.0) that is
1947        specified in data.exf
1948    o fix in pkg/thsice:
1949      - update Evap (Tsf changes) to be consistent with Latent heat flux
1950      - maintain snow precipitation unchanged (even if Tsf >=0).
1951     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1952    
1953    checkpoint52m_post
1954    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1955      this does not change any of the results, because myIter=0 in swfrac always
1956      lead to jwtype=2 (the default anyway), but the call makes little sense
1957      as a default
1958    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1959    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1960      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1961    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1962    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1963    o extending useSingleCpuIO option to work with new exch2 I/O format
1964      - old-style, missing-tile I/O is still accessible by defining CPP
1965        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1966    o monitor package can write to NetCDF files and/or STDOUT
1967    o fix re-definition bug in MNC_GRID_INIT_ALL()
1968    o doc/api_reference added
1969      - a framework for building an API Reference Manual using all
1970        the "protex" comments embedded in the code
1971      - see pkg/generic_advdiff, pkg/mnc for examples
1972    o MNC:
1973      - make myThid the last argument for all subroutines
1974      - new default for the grid files: NO halos
1975      - add useMNC and other run-time flags
1976      - separate per-file-group handling of the unlimited dimension
1977      - early initialization of MNC w/ flags read at the eeboot stage
1978        and lookup tables set in initialize_fixed
1979      - write all MNC output to a freshly-created directory
1980    o thermodynamics sea-ice (thsice) is now tested with testreport.
1981    o test exp. advect_cs: use the standard cs32 grid ; update output.
1982    o Added functionality to grdchk:
1983      pick global i,j,k position (or nearest wet) where to perform check.
1984    
1985    checkpoint52l_post
1986    o new land formulation:
1987      a) use ground enthalpy as prognostic variable to ensure exact
1988         energy conservation.
1989      b) account for water temperature and for latent heat of freezing
1990         in all processes (rain, run-off, ground storage)
1991      c) compute surface and ground temperature implicitly.
1992    o aim_v23 modification for new land model:
1993      a) Treat separately land / ocean / sea-ice surface fluxes
1994         to allow implicit computation of land & sea-ice surface temp.
1995      b) add snow precipitation.
1996    checkpoint52l_pre
1997    
1998    o fix problem (when 1 tile is empty) in min/max monitor.
1999    o fix bug in timeAve (u,vZetatave in common block)
2000    o no restoring terms under ice for pkg/seaice
2001    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2002    o bug fix for pkg/seaice pickups
2003    o change MNC call locations and add coordinate attributes
2004    o mask vorticity at the corner ; affects global_ocean.cs output
2005    o fix ini_curvilinear_grid ; test CS experiments with mpi
2006    o aim.5l_cs: modify sea-ice fraction input file ; update output
2007    o exf: Adding simple range check routine for exf fields after read
2008    
2009    checkpoint52k_post
2010    o removed top-level directory "diags"
2011      - we migrated these functions to pkg/timeave a long time ago
2012    o fixed bug introduced in pkg/monitor
2013    o accuracy ctrlprec = 32 insuffient for gradient checks using
2014      averaged fields (I/O via cost_averages)
2015      -> use ctrl.h in active_file*.F to control I/O precision.
2016    o paramter list of CALL ADTHE_MAIN_LOOP
2017    o added initial do_the_model_io to ecco
2018    o set all ...Freq to zero after cost_final
2019      taveFreq, dumpFreq, pChkptFreq
2020    o MAIN and ECCO differentiability restored
2021    
2022    checkpoint52j_post
2023    o fix nchklev in tamc.h for global_ocean...
2024    o Bringing flow and store directives up-to-date
2025    o Really weird thing!
2026      call do_the_model_io from the_main_loop with parameters
2027      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2028      TAF places a faulty re-call of initialise_varia
2029      after cost_final call which should not be there!
2030    checkpoint52j_pre
2031    
2032    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2033      error messages
2034    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2035    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2036      debug output
2037    o modfied mdsio_writefield.F to handle non-global files under exch2
2038    o update AIM Cubed-Sphere exp (aim.5l_cs):
2039      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2040    o update AIM Equatorial Channel exp:
2041      use standard aim_v23 pkg and change the SST fields to be more realistic.
2042    o globalFile now works with exch2
2043    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2044      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2045    o limit timeave output for hi-res integrations
2046    
2047    checkpoint52i_post
2048    o removed CPP_EEOPTIONS.h from verification/*/code
2049    o updated the tiling for global_ocean_pressure
2050    checkpoint52i_pre
2051    
2052    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2053      the old pkg/aim).
2054    
2055    checkpoint52h_pre
2056    o shortened offending lines in exch2_send_rx?.template
2057    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2058    o genmake2: add build & execute test for NetCDF code
2059    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2060      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2061    o added useSingleCPUIO flag to monitor.F and mon_out.F
2062    o added temporary hack for sea-ice dynamics on the cube:
2063      metric terms are ignored and it is assumed that
2064      there is no sea-ice on cube faces 1, 2, 4, and 5.
2065    
2066    checkpoint52f_post
2067    o added exch2 cube routines to pkg/exch2
2068    o modified hs94.cs-32x32x5 to use it
2069    o added new grid files to hs94.cs-32x32x5
2070    checkpoint52f_pre
2071    
2072    checkpoint52e_post
2073    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2074      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2075    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2076      to work with implicit vertical advection and AB ;
2077    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2078    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2079     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2080    checkpoint52e_pre
2081    
2082    o fix bug in impldiff when Nr=1 or Nr=2.
2083    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2084    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2085    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2086      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2087    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2088    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2089    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2090    
2091    checkpoint52d_post
2092    o re-tiled many expts to allow comparison in multi-processor mode
2093      - updated output accordingly
2094      - changed hs94.128x64x5 to use intial T from file rather than use the
2095        random number generator
2096    o add infrastructure in model routines for fizhi and gridalt packages
2097    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2098    o changes to permit hi-res, cubed-sphere, configuration
2099      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2100      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2101      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2102        of surface winds for the cube
2103      (A verification experiment, based on global_ocean.cs32x15, but with
2104       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2105       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2106       complete with example surface forcing files and matlab scripts to look
2107       at the output and compare it with that of global_ocean.cs32x15.)
2108    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2109       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2110       to conform to the common rule.
2111    o check-in the first version of the coupler + interfaces for multi-components
2112       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2113       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2114       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2115       - ocean and atmos. share the same horizontal grid (no interpolation).
2116       - exchanges between component and coupler is done in forward_step
2117    o new verification experiment, cpl_aim+ocn:
2118       coupled ocean - AIM atmosphere on cs32 grid.
2119    
2120    checkpoint52d_pre
2121    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2122    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2123    
2124    checkpoint52c_post
2125    o Fixing OPTIONS files for use of exf:
2126      - ALLOW_ECCO not needed
2127      - ECCO_CPPOPTIONS.h should not be included from
2128        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2129        as has been the case in the past
2130      - All cal/exf related options are currently set in
2131        single header file. Should remain so until we
2132        agree on a consistent new policy.
2133    o Removed all CPP options for cal package.
2134      cal has no more CPP options.
2135    o modified STOREs in GAD_ADVECTION
2136    o corrected key comp. for passkey
2137    
2138    checkpoint52b_post
2139    o new version: "thsice" of thermodynamic sea-ice pkg:
2140     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2141     - modify fluxes but do not change theta directly;
2142     - light cleaning of bulk_force pkg (still needed with thsice).
2143     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2144       + output_thsice.txt to test thsice & bulk_force pkgs.
2145    o put back grid & coriolis monitor output.
2146    checkpoint52b_pre
2147    
2148    o call "do_the_model_io" at the beginning (=> dump initial state)
2149    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2150    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2151      (need info on NUMBER_OF_PTRACERS)
2152    o missing PTRACERS headers in some routines
2153    o default tamc.h in pkg/autodiff supposed to crash
2154      to ensure proper customization
2155    
2156    checkpoint52a_post
2157    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2158      - moved surfaceTendencyTice from pkg/seaice to main code
2159      - subroutine FREEZE_SURFACE now limits only surface temperature
2160        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2161        => new output.txt for global_ocean.cs32x15 & global_with_exf
2162      - keep the old version of FREEZE for backward compatibility;
2163        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2164      - corresponding modifs for TAF directives
2165    o added surface flux output variables to TIMEAVE_STATVARS
2166    o time-averaged output for pkg/ptracers
2167    o fix problem with ECCO-related divided adjoint
2168      snapshot file was missing some ad-variables,
2169      but no warning issued by TAF
2170    
2171    checkpoint52a_pre
2172    o some bug fixes for #undef REAL4_IS_SLOW
2173    
2174    checkpoint52 = ecco_c52_e35
2175    o after testing adjoints of checkpoint51u_post
2176    
2177    checkpoint51u_post
2178    o this is the post-merge tag of the ecco-branch
2179      (needs another clean checkout and re-testing)
2180    o various natl_box_adjoint configs and results
2181      but no input fields
2182    o obcs adjoint not yet merged!
2183    o adding ECCO global 1x1 and 2x2 degree configs
2184    o updated/extended some store directives for seaice
2185    o pkg/ecco now containes ecco-specific part of cost function
2186    o top level routines the_main_loop, forward_step
2187      supersede those in model/src/
2188      previous input data.cost now in data.ecco
2189      (new namelist ecco_cost_nml)
2190    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2191    
2192    checkpoint51t_post
2193    o this is the pre-merge tag of the ecco-branch
2194    
2195    checkpoint51s_post
2196    o cleanup: removed various obsolete #define-s
2197    o pkg/grdchk
2198      - renamed 'ph-grd 3' to 'grad-res'
2199      - merged from ecco-branch
2200        (remaining bug fixes for obcs gradient checks)
2201      - additional high-precision output for testreport
2202        (grep for 'precision_grdchk_result')
2203    
2204    checkpoint51r_post
2205    o cleaned up or removed CPP_OPTIONS.h files
2206    o updated results for some of the tests to reflect the new
2207      optfiles (-ieee: -O0 instead of -O3)
2208    
2209    checkpoint51q_post
2210    o cd_code:
2211      - moved cd_scheme.F -> cd_code_scheme.F
2212      - separate read_checkpoint from cd_code_ini_vars.F
2213      - separated cd_code part from write_checkpoint
2214      - updated AD_SOURCE, generated .flow
2215      - added CD_CODE_VARS.h to the_main_loop
2216      - Moving cd_code specific store dir.s to pkg/cd_code
2217    o ctrl package totally restructured
2218      - pack/unpack now optional and decoupled from
2219        xx_/adxx_ I/O
2220      - ctrl_pack/unpack cleaned
2221        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2222      - confined inclusion of AD_CONFIG.h to where necessary.
2223    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2224    
2225    checkpoint51p_post
2226    o create initial cd_code package
2227      - WARNING: the initialization of fields within packages
2228        is broken because INI_FIELDS (where READ_CHECKPOINT is
2229        called) is called *before* PACKAGES_INIT_VARIABLES.
2230        This seems to be backwards since
2231        1) its important to initially zero the entire field including
2232           the "halo" region
2233        2) zeroing needs to be done *before* reading pickup info
2234           and the pickup call might or might not happen in any
2235           particular run
2236      - this needs an overhaul for R2
2237    o cleanup verification/*/code/GMREDI_OPTIONS.h
2238    o cleanup testreport
2239    
2240    checkpoint51o_post
2241    o bringing AD-related verif's up to date with genmake2
2242      - carbon/
2243      - global_ocean.90x40x15/
2244      - hs.94.1x64x5/
2245      - (front_relax/ )
2246    o (more) consistent directory structure for AD-related verif.'s
2247    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2248    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2249    o bug fix in find_alpha.F for MDJWF:
2250      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2251        change rho -> rho-rhoConst
2252      - replace call find_rho to find_rhonum
2253    o initialisation of rFlx extended to full array (required by TAF)
2254      and shifted to thermodynamics
2255    o removed PTRACERS.h in ptracers routine
2256    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2257    o Correcting initialisations for fVerU, fVerV.
2258    o helping TAF to recognize dependency on kUp for
2259      fVerU, fVerV
2260    o Replacing delZ by delR in pkg/ctrl/
2261    checkpoint51o_pre
2262    
2263    o undid all of cp51 pending some cleanups and discussion
2264    o added the [#include "AD_CONFIG.h"] statement to all files that need
2265       it for adjoint/tl #defines
2266     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2267     o removed tools/genmake since it no longer works
2268    
2269    checkpoint51n_post
2270    o modifications to make FREEZE flux visible to pkg/kpp
2271      - moved surfaceTendencyTice from pkg/seaice to main code
2272      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2273      - subroutine FREEZE now limits only surface temperature
2274        (this means new output.txt for global_ocean.90x40x15,
2275         global_ocean.cs32x15, and global_with_exf)
2276    o added surface flux output variables to TIMEAVE_STATVARS
2277    
2278    checkpoint51n_pre
2279    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2280    o added [#include "AD_CONFIG.h"] to all files that use the following
2281      defines:
2282      - ALLOW_ADJOINT_RUN
2283      - ALLOW_TANGENTLINEAR_RUN
2284      - ALLOW_ECCO_OPTIMIZATION
2285    
2286    checkpoint51m_post
2287    o incorporating changes to get TAMC/TAF working in genmake2
2288      - added new TAMC/TAF targets to the Makefile
2289      - various cleanups related to package handling
2290      - these changes should have no impact on the forward model
2291    
2292    checkpoint51l_post
2293    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2294     - faster algorithm for cal_addtime.F
2295     - higher precision arithmetic, where needed
2296     - pkg/exf *startdate variables changed from calendar date to
2297       model integration time
2298    
2299    checkpoint51l_pre
2300    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2301    o enable to apply restoring on S & T only in a latitude band.
2302    o update output (external_forcing_surf modif. change truncation errors)
2303       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2304    
2305    checkpoint51k_post
2306    o change default to: useNHMTerms=.FALSE.
2307     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2308       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2309     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2310        exp1, ideal_2D_oce
2311     - change data file of oceanic exp (leave the results unchanged for now)
2312       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2313    o set gravitySign automatically according to the vertical coordinate used
2314      (and change sign: back to "logical" value: +1 when R increases downward)
2315    o added an include barrier to the default CPP_OPTIONS.h and
2316      removed the #include "PACKAGES_CONFIG.h" from it
2317    o fix a bug in mom_fluxform (from chk51j_post)
2318    
2319    checkpoint51j_post
2320    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2321    o adjusted some flow directives (dynamics, thermodynamics)
2322    o added cubed-sphere case to test cost function
2323    o heckpoint_lev?_directives.h now include
2324      pkg-specific directives, whenever those are enabled.
2325    o Moving pkg-specific flow directives to corresponding pkg
2326      Moving pkg-specific differentiation list to corresponding pkg
2327      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2328      ---> conventions are
2329           - pkg_ad.flow
2330           - pkg_ad_diff.list
2331           - pkg_ad_check_lev?_dir.h
2332    
2333    checkpoint51i_post
2334    o merge of the branch-genmake2
2335      - knowingly breaks the older genmake
2336      - automatic generation of all ALLOW_${PKG_NAME} defines
2337      - new testreport supersedes older testscript
2338    o large number of package inclusion and header cleanups
2339    checkpoint51i_pre
2340    
2341    o new output for adjoin of global ocean vector invariant
2342    o fix for checkpoint of thermodynamic seaice and bulk_force
2343    o Steph gchem various cleanups
2344    
2345    checkpoint 51h_pre
2346    o fixed some single quotes
2347    o modify gchem pkg to be more versatile
2348    o modifications to clean up dic pkg
2349    o add pkg/cfc
2350    
2351    checkpoint51g_post
2352    o provide links for ARPACK and ADM*TLM
2353    o start removing verification/vero/
2354    o update AD-related stuff
2355      (in particular some IF-statements in model/src/ routines)
2356    o adding to verification/global_ocean.90x40x15/ adjoint of
2357      vector invariant setup
2358    
2359    checkpoint51f_post
2360    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2361    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2362      of tracer Green's fucntions for ocean inversion project.
2363    
2364    checkpoint51f_pre
2365    o Added on-the-fly spatial interpolation capability
2366        "USE_EXF_INTERPOLATION" to pkg/exf.
2367      - This is a temporary Cartesian-grid hack until
2368        the super-duper ESMF coupler becomes available.
2369      - See verification/global_with_exf/README for usage example.
2370      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2371        flags and modified pkg/seaice accordingly.
2372    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2373        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2374        non-local transport term.
2375    
2376    checkpoint51e_post
2377    o pkg/mom_vecinv:
2378      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2379      - add time-ave diagnostic of vorticity advection.
2380    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2381    o atmospheric geopotential: - include water vapor effect;
2382                                - use p^kappa in p* scaling.
2383    o land pkg: read initial state from files.
2384    o AIM : add stratospheric drag in the upper level
2385    
2386    checkpoint51d_post
2387    o change function ILNBLNK (=> last non-blank char.) to return zero
2388      (instead of the string length) when the string. char is empty
2389    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2390    o modif's to restore TAMC compatibility
2391      - avoid "_d" constructs in PARAMETER declarations
2392      - avoid interrupting lines by comment lines
2393    o Use cluster local disks for purely local I/O
2394      vs. globally visible disks needed for ctrl stuff
2395      (merged from ecco-branch)
2396      - new active_file_loc... and mdsio_..._loc routines
2397      - affected packages: autodiff, ctrl, grdchk, mdsio
2398    
2399    checkpoint51c_post
2400    o introducing integer flag debugLevel
2401      - debLevZero: suppress all output
2402      - debLevA: standard
2403      - debLevB: equivalent to current debugMode=.TRUE.
2404    o introducing pathname variable mdsioLocalDir for mdsio
2405      that can be specified at runtime
2406      (relevant for cluster I/O to local disk)
2407    `
2408    >>>checkpoint51b_post
2409    adjoint of ptracers
2410    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2411    o extended state in checkpoint_lev?, etc.
2412    o alternative ctrl/cost with tr1 or ptracer
2413    o new comlev1_bibj_ptracers
2414    o new ptracers.flow
2415    o made ptracers_forcing same as external_forcing_s
2416    o added verification for adjoint with ptracers
2417      - adm. grdchk fail so far
2418      - tlm. grdchk OK
2419      - checked tapelev/comlev recomputations: OK
2420    <<<checkpoint51b_pre
2421    
2422    checkpoint51a_post
2423    o added code for biogeochemistry package
2424      - new pkgs: dic, gchem
2425      - new subroutine in ptracers
2426    o modify code for biogeo packages
2427      - in model/src and pkg/ptracers
2428    
2429    checkpoint51
2430    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2431      - autodiff, ctrl, exf, grdchk, seaice
2432      kept separate packages
2433      - cost, ecco, obcs
2434    o updating verification/internal_wave, verification/lab_sea
2435      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2436    
2437    checkpoint50i_post
2438    o Preparing next differentiable checkpoint and sync
2439      of MAIN vs. ecco-branch
2440      - 1st step: this one is differentiable
2441      - 2nd step: next(! not this) checkpoint will have updated packages
2442                  from ecco-branch)
2443    
2444    checkpoint50h_post
2445    o new package "land": provide surface BC for AIM.
2446    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2447    o AIM: use true log-P extrapolation for near surface temp (= as in
2448        F.Molteni paper) ; update aim.5l_cs output.
2449    o New variable in PARM03 for more flexible pickups
2450    o somewhat cleaned package initialisation sequence for
2451      ctrl/ cost/ ecco/ in packages_... routines
2452    
2453    checkpoint50g_post
2454    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2455      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2456      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2457        made the default because of faster convergence than ADI
2458    
2459    checkpoint50f_post
2460    o exf totally restructured
2461      - replaced all exf_set_ routines by one generic exf_set_gen.F
2462        and made sure it's still differentiable
2463      - split exf_getffields.F into new exf_bulkformulae.F
2464      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2465      - updated adjoint/makefile and relevant verif. accordingly
2466    
2467    checkpoint50f_pre
2468     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2469          + change Evap over land. (update aim.5l_cs output)
2470     o added missing .cvsignores and made uniform across expts
2471     o changed configuration of tidal_basin_2d expt
2472     o added pkg/debug functions for tracing code in fatal crashes
2473     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2474     o new fn in pkg/monitor to stop model if solution grows too big
2475     o removed lots of single quotes from comments
2476    
2477    checkpoint50e_post
2478    o make KPP work with PTRACERS
2479     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2480       nearly a copy of kpp_transport_s
2481     - there is no analogue to SurfaceTendencyS, so I have to use
2482       gPtr(of the surface layer) instead
2483    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2484    checkpoint50e_pre
2485    
2486    checkpoint50d_post
2487    o change kpp output from multiple-record state files to single-record state
2488      files analogous to write_state.F
2489    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2490      analogous to the cg2d-related output.
2491    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2492      so that writing to internal file fn (with length 512) fails.
2493    checkpoint50d_pre
2494    
2495    checkpoint50c_post
2496    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2497    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2498    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2499    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2500    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2501    
2502    checkpoint50c_pre
2503    Merging from release1_p13:
2504    o bug fix for pkg/seaice dynamic solver
2505    o Added SEAICE_initialHEFF to pkg/seaice
2506    
2507    checkpoint50b_post
2508    o store u*,v* in gU,V instead of in guNm1,gvNm1
2509    o in order to put the momForcing out of the Adams-Bashforth:
2510      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2511      to timestep.F
2512    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2513    o re-generate output for highly sensitive test-exp:
2514       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2515    
2516    checkpoint50b_pre
2517    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2518    o corrected CPP option mismatch in exf_Bulk... functions for case
2519      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2520    
2521    checkpoint50a_post
2522    o Bug fix for merging between c50 and KPP.
2523      ikey was passed from thermodynamics to kpp_calc via
2524      common block rather than being recomputed in kpp_calc,
2525      in contradiction with new key itdkey.
2526      New key ikppkey created, and tamc.h headers updated.
2527    
2528    checkpoint50
2529    - 2nd step of merge with ecco-branch:
2530      merge changes in ecco-branch back into main trunk
2531    - bug fix in find_alpha
2532    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2533    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2534    - merged some sliced AD support routines
2535    
2536    checkpoint49
2537    merged from ecco-branch:
2538    o exf:
2539      - Enable initialisation of forcing fields to constant
2540        (runtime) values.
2541      - in exf_getffields.F
2542        Reduce i-/j-loop to interior domain, discarding overlaps.
2543        That also fixes wrong TAF-key computations for key_1, key_2
2544        with bulf formulae.
2545      - exf_init.F modify #ifdef for exf_init_evap
2546      - exf_getffieldrec.F, ctrl_getrec.F
2547        The following INT-usages are not safe:
2548          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2549          fldcount = int(fldsecs/fldperiod) + 1
2550        and were modified.
2551    o autodiff: checkpoint_lev...
2552      - updated storing for bulk formulae (some arrays were missing)
2553      - added state for seaice package
2554      - synchronized with main branch
2555    o DIVA:
2556      Modif.s in
2557      - the_main_loop.F
2558      - the_model_main.F
2559      and added cost_final_restore.F cost_final_store.F
2560      o With these changes, it is possible to fully separate
2561        the first forward run to compute the cost function (mdthe_main_loop)
2562        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2563        into separate model executions.
2564        This enables better tuning of DIVA to given queue sizes.
2565      o Loss of cost function value in consecutive DIVA runs is
2566        fixed by storing to 'costfinal' file.
2567      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2568        beginning/end of adjoint integration is accounted for.
2569      The current changes apply to TAF-1.4.26.
2570      TAF has one remaining bug, requiring one manual change
2571      (see MITgcm manual).
2572    o cal: synchronized between MAIN and ecco-branch
2573    
2574    checkpoint48i_post
2575    o Changes to restore differentiability of code w.r.t. previous tag
2576      (mostly adding new routines to make list and replacing
2577      pressure by totPhiHyd).
2578    o Updated and merged grdchk package
2579      - has both ADM and TLM checks
2580      - works for single- and multi-proc.
2581      - output cleaned
2582      - worked successfully for parallel DIVA
2583    o genmake:
2584      - Adding -platform=SP4
2585      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2586    o Modif. for DIVA:
2587      ctrl_unpack should not be called in intermediate DIVA interval.
2588      (similar thing would apply for active files such as
2589      tbar, sbar, psbar, which should not be reinitialised;
2590      only relevant for ecco-branch)
2591    
2592    checkpoint48h_post
2593    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2594    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2595    o Added SEAICE_initialHEFF to pkg/seaice
2596    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2597    
2598    checkpoint48g_post
2599    --- EOS:
2600    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2601      store total Potential in totPhyHyd for diagnostics & EOS.
2602    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2603    --- Pressure/geopotential gradient:
2604    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2605    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2606      ( changes results of global_ocean_pressure )
2607    o NLFS + z-coord.: add eta*Rho' contribution.
2608    o accurate phiHyd when using interface-W at the middle between 2 centers
2609     ( changes results of ideal_2D_oce )
2610    o includes r* 2nd term in potential gradient.
2611    
2612    checkpoint48f_post
2613    Merging from release1_p12:
2614    o Modifications for using pkg/exf with pkg/seaice
2615      - improved description of the various forcing configurations
2616      - added basic radiation bulk formulae to pkg/exf
2617      - units/sign fix for evap computation in exf_getffields.F
2618      - updated verification/global_with_exf/results/output.txt
2619    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2620      (SBO) core products, including oceanic mass, center-of-mass,
2621      angular, and bottom pressure (see pkg/sbo/README.sbo).
2622    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2623      to avoid negative values in shallow regions.
2624      - updated verification/natl_box/results/output.txt
2625      - updated verification/lab_sea/results/output.txt
2626    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2627    o Added useSingleCpuIO option (see PARAMS.h).
2628    o Updated useSingleCpuIO option in mdsio_writefield.F to
2629      work with multi-field files, e.g., for single-file pickup.
2630    o pkg/seaice:
2631      - bug fix in growth.F: QNET for no shortwave case
2632      - added HeffFile for specifying initial sea-ice thickness
2633      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2634    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2635      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2636    o pkg/seaice:
2637      - adjoint-friendly modifications
2638      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2639    
2640    checkpoint48e_post
2641    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2642    o dynamics: change definition of computational domain & adapt mom_fluxform
2643      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2644    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2645        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2646        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2647        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2648        inverted_barometer solid-body.cs-32x32x1
2649      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2650    
2651    checkpoint48d_post
2652    o in preparation for r*:
2653     a) use pre-computed gradient of hydrostatic potential:
2654        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2655     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2656        => affects results of glob_oce_pressure (different truncation error)  
2657      update output.txt of ideal_2D_oce & global_ocean_pressure
2658    
2659    checkpoint48d_pre
2660    o in preparation for r*:
2661      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2662      pass the 2 comp. of the grad. as arguments to momentum S/R.
2663      but for the moment, only used if it does not change the results.
2664    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2665    
2666    checkpoint48c_post
2667    Modifications in treatment of initial flux forcing controls
2668    to avoid extra storing of flux fields.
2669    
2670    checkpoint48c_pre
2671    o Added tidal_basin_2d experiment (currently 1D!)
2672    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2673    
2674    checkpoint48b_post
2675    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2676     (modification to pressure gradient not yet implemented)
2677    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2678      (for U & V) that are used for vertical advection of momentum.
2679    
2680    checkpoint48a_post
2681    o In preparation for r*, use temp. array to compute vertical transport
2682       in flux-form momentum pkg. => change results of few test-exp.
2683      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2684                        lab_sea, natl_box & plume_on_slope
2685    
2686    checkpoint48
2687    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2688    
2689    checkpoint47j_post
2690    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2691    o moved adexch from forward_step to addummy_in_stepping
2692    o added exch in ctrl_map_...
2693    o aveFreq.=0. at end of cost_final to avoid overwrite in
2694      reverse checkpointing loop
2695    o Yet more changes in gmredi:
2696      * adgmredi_calc_tensor
2697        avoiding all recomputation of gmredi_slope_limit
2698      * adgmredi_x/y/rtransport
2699        added flag for excessive storing to avoid recomp. of
2700        u/v/rtans, dTdx/y/z
2701        -> this is not really necessary and very memory-consuming
2702      * adgmredi_slope_psi:
2703        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2704      * gmredi_slope_limit
2705        re-activated full calculation of taperfct for case 'ac02'
2706    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2707    
2708    checkpoint47i_post
2709    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2710    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2711      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2712    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2713    o gmredi: fix few bugs.
2714    
2715    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2716    This will be a good checkpoint to plug into the ecco-branch.
2717    o few modif.'s to get latest version adjointed
2718      (mainly kick out code in ini_linear_phisurf)
2719    o modif's to run adjoint with exactConserv
2720    o case GM_BOLUS_ADVEC should be cleaned
2721      S/R gmredi_slope_psi should be cleaned
2722    o verification/carbon now has exactConserv=.TRUE.
2723    
2724    checkpoint47g_post
2725    o time-average AIM output: becomes independent from statvars time-average
2726      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2727    o After TAF bug fix:
2728      Tested adjoint of gmredi package.
2729      Tests were done with checkpoint47 rather than with latest
2730      checkpoint47f_post since the latter is broken for the adjoint
2731      verification/carbon/ contains both ADM and TLM gradient checks.
2732    Here they are, before they get changed/lost/stolen.
2733    Mostly modif.'s to fix numerical sensitivities.
2734    Gradient checks OK for
2735    - GM_taper_scheme:
2736      * clipping
2737      * ac02
2738      * linear
2739      * glw91
2740      * dm95
2741      * ldd97
2742    - GMREDI_OPTIONS:
2743      * GM_VISBECK_VARIABLE_K
2744      * GM_NON_UNITY_DIAGONAL
2745      * GM_EXTRA_DIAGONAL
2746      * GM_BOLUS_ADVEC
2747    in conjunction with data.gmredi parameters to be checked in
2748    in a few minutes under verification/carbon/code/
2749    
2750    checkpoint47f_post
2751    Merging from release1_p10:
2752    o modifications for using pkg/exf with pkg/seaice
2753      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2754        and SEAICE_EXTERNAL_FLUXES
2755      - pkg/exf CPP options EXF_READ_EVAP and
2756        EXF_NO_BULK_COMPUTATIONS
2757      - usage examples are Experiments 8 and 9 in
2758        verification/lab_sea/README
2759      - verification/lab_sea default experiment now uses
2760        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2761    
2762    checkpoint47e_post
2763    o created a tag prior to creating a branch
2764    
2765    checkpoint47d_post
2766    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2767      at the bottom boundary had an erroneous half slip boundary condition
2768    o added bottom drag and no slip boundary condition capabilities to
2769      oceanic pressure coordinates code
2770    o added new verification experiment global_ocean_pressure, this experiment is
2771      also described in the tutorial section of the manual
2772    checkpoint47d_pre
2773    
2774    checkpoint47c_post
2775    o Added a verification experiment for a global cubed-sphere ocean run
2776      -  verification/global_ocean.cubed32x32x30
2777      -  uses pkg/therm_seaice and pkg/bulk_forcing
2778    
2779    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2780    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2781      when using P-coordinate; only implemented for atmospheric config.
2782    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2783      NOTES: requires option NONLIN_FRSURF to be "#define".
2784    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2785    
2786    checkpoint47b_post
2787    Merging from release1_p9:
2788    o pkg/seaice
2789      - removed GOTO's and added taf directives
2790      - double precision constants to reduce the g77 (Linux)
2791        to F77 (SGI) differences reported in release1_p8
2792    o tools/genmake
2793      - added SGI options
2794    o verification/testscript
2795      - updated to that of checkpoint47a_post
2796    o verification/global_ocean.90x40x15/input/eedata
2797      - modified for SGI f77 compatibility
2798    o verification/lab_sea
2799      - added description of sea-ice model
2800      - added missing matlab routines
2801      - added test of thermodynamics parallelization
2802    
2803    checkpoint47a_post
2804    o new pkg: aim_v23
2805     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2806       for now, keep the same surface forcing as before.
2807     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2808     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2809     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2810    o add diagnostic of surface correction term in monitor output
2811    
2812    o bulk_force and therm_seaice
2813    - Two packages:  bulk_force (Bulk forcing)
2814      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2815    - Earlier integration from Stephaine Dutkiewicz
2816      and Patrick Heimbach.
2817    - Two ifdef statements for compile time,
2818       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2819    
2820    checkpoint47
2821    differentiable version of checkpoint46n_post
2822    o bug fix in quasihydrostaticterms
2823    o * "clean" adjoint code (in terms of extensive recomputations)
2824        can now be obtained for all GMREDI options (i.e. for
2825        - GM_VISBECK_VARIABLE_K
2826        - GM_NON_UNITY_DIAGONAL
2827        - GM_EXTRA_DIAGONAL
2828        - GM_BOLUS_ADVEC )
2829      * However, wrong gradient check problem remains unsolved.
2830      * New CPP options have been introduced for different
2831        tapering schemes
2832    o external_fields_load now part of differentiation list
2833    o pressure needs multiple storing;
2834      would be nice to have store_pressure at beginning or
2835      end of forward_step, e.g. by having phiHyd global (5-dim.)
2836      (NB: pressure is needed for certain cases in find_rho,
2837      which is also invoked through convective_adjustment).
2838    o recomputations in find_rho for cases
2839     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2840    o #define ATMOSPHERIC_LOADING should be differentiable
2841    o ini_forcing shifted to begining of initialise_varia
2842    o Incorporating QNVS line search routines into MITgcm
2843      (this is separate code, and therefore not under pkg)
2844      lsopt/, optim/
2845    o Updated verification/carbon/
2846      - #define GM_VISBECK_VARIABLE_K
2847      - GM_taper_scheme    = 'ldd97'    
2848    
2849    checkpoint46n_post
2850    Merging from release1_p8:
2851    o verification/natl_box:
2852      updating new external_fields_load routine
2853    o New package: pkg/seaice
2854      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2855      The sea-ice code is based on Hibler (1979-1980).
2856      Two sea-ice dynamic solvers, ADI and LSR, are included.
2857      In addition to computing prognostic sea-ice variables and diagnosing
2858      the forcing/external data fields that drive the ocean model,
2859      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2860      The implied surface heat flux is then stored in variable
2861      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2862      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2863      non-local transport term.  Because this call precedes model
2864      thermodynamics, temperature under sea-ice may not be "exactly" at
2865      the freezing point by the time theta is dumped or time-averaged.
2866      N.B.: fairly large differences in accuracy occur across
2867            different platforms/compilers; comparison between
2868            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2869            generated output gives:
2870       T           S           U           V
2871      C D M    c        m  s        m  s        m  s        m  s
2872      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2873      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2874      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2875    
2876      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2877    o GAD:
2878      - generated new common blocks to account for call of
2879        same gad routines with differing traceridentities
2880        (needed to modify tracerIdentity indices in GAD.h)
2881      - generated separate common blocks for case useCubedSphereExchange
2882        (Department of Futurology)
2883      - parameter lists to gmredi_?transport: added tracerIdentity
2884      - added new key indices to tamc.h
2885    o external_fields_load:
2886      - added this routine to TAF list
2887      - needed to make some common blocks global and additional storing
2888        along the same lines as exf package (checkpoint_lev?_directives.h)
2889    o exf:
2890      updated external forcing package
2891      - bug fixes carried over from ecco-branch
2892        (missing OBCS_OPTIONS.h in two routines)
2893      - enable easy to use "no forcing".
2894      - added exf I/O for atmospheric loading
2895      - added exf I/O for runoff data
2896      - transfered scaling between exf <-> MITgcm to exf namelist
2897    o Adding new verification experiment global_with_exf.
2898      This verification experiment is almost identical to the
2899      global_ocean.90x40x15 experiment, except that it uses
2900      the exf (and cal) package instead of the
2901      external_fields_load routine (cf README file).
2902    
2903    checkpoint46m_post
2904    o modified testscript to return -- when there are no lines of "%MON" output
2905    o added new flag "quasiHydrostatic" for QH mode
2906      and new routine quasihydrostaticterms()
2907    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2908      New routine: mom_u_coriolis_nh()
2909    o fixed sign of non-hydrostatic metric terms in u and v equations.
2910      Depend on correct sign of gravitySign.
2911    o added work.pc* to .cvsignore in aim directories using ifc
2912    o introduced flag for controllin non-hydrostatic metric terms
2913    o removed gravitySign from PARM04
2914    o switched to g77/ifc from pgf77 in aim experiments
2915    
2916    checkpoint46l_post
2917    o made convective adjustment work with pressure coordinates:
2918     - changed the direction of k-loop in convective_adjustment.F for the
2919       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2920     - adjusted the reference pressure k-index in convective_adjustment.F
2921     - adjusted the convection condition in convect.F (in analogy to
2922       calc_ivdc.F)
2923     - convective_adjustment no longer computes anything on the halos
2924     - removed the warnings about negative salinity from find_rho.F and
2925       find_alpha.F; instead the new routine look_for_neg_salinity, called
2926       at the beginning of find_rho, find_alpha, and find_beta, does a
2927       check of the entire slice, if CPP-option
2928       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2929    checkpoint46l_pre
2930    
2931    checkpoint46k_post
2932    o fixed the verification/global_ocean.90x40x15 experiment:
2933     - new bathymetry (the world according to A., JMC, and M.)
2934     - new initial fields and forcing fields (*.bin files)
2935     - new POLY3.COEFFS (for the next release one should switch to a full
2936       equation of state: JMD95P or MDJWF)
2937     - fixed several errors and redundancies in the data file
2938     - experiment uses looped cells
2939     - added matlab directory with diagnostic scripts for plotting of output
2940    
2941    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2942     - read AIM physics parameters from a file (data.aimphys)
2943     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2944    
2945    checkpoint46j_post
2946    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2947    o move wVel computation at the end of the time step, in S/R integr_continuity
2948    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2949    o update timeave pkg for wVel diagnostic.
2950    checkpoint46j_pre
2951    
2952    checkpoint46i_post
2953    o Clean up AIM package (and keep the results unchanged):
2954      include CPP_OPTION and use IMPLICT NONE in all routines ;
2955      declare all the variables _RL ; use _d 0 for all numerical constants.
2956      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2957    
2958    checkpoint46h_post
2959    o cleaned up the use of rhoNil and rhoConst.
2960      - rhoNil should only appear in the LINEAR equation of state, everywhere
2961        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2962        and the dynamical equations are all divided by rhoConst
2963    o introduced new parameter rhoConstFresh, a reference density of fresh
2964      water, to remove the fresh water flux's dependence on rhoNil. The default
2965      value is 999.8 kg/m^3
2966    o cleanup up external_forcing.F and external_forcing_surf.F
2967      - can now be used by both OCEANIC and OCEANICP
2968    checkpoint46h_pre
2969    
2970     Added code to convert surface volume flux (fresh water) into
2971     a mass flux when using P coordinates in the ocean (OCEANICP).
2972     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2973    
2974    checkpoint46g_post
2975    o Include a new diagnostic variable phiHydLow for the ocean model
2976      - in z-coordinates, it is the bottom pressure anomaly
2977      - in p-coordinates, it is the sea surface elevation
2978      - in both cases, these variable have global drift, reflecting the mass
2979        drift in z-coordinates and the volume drift in p-coordinates
2980      - included time averaging for phiHydLow, be aware of the drift!
2981    o depth-dependent computation of Bo_surf for pressure coordinates
2982      in the ocean (buoyancyRelation='OCEANICP')
2983      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2984        Theta, Salinity, and Pressure in the parameter list. This routine is
2985        presently contained in find_rho.F. This routine does not give the
2986        correct density for 'POLY3', which would be a z-dependent reference
2987        density.
2988    o cleaned up find_rho
2989      - removed obsolete 'eqn' from the parameter list.
2990    o added two new verification experiments: gop and goz
2991      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2992    checkpoint46g_pre
2993    
2994  checkpoint46f_post  checkpoint46f_post
2995  o Enable tangent linear (forward mode) gradient checks:  o Enable tangent linear (forward mode) gradient checks:
2996    - extended active file handling to g_... files    - extended active file handling to g_... files

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