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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.868 by jmc, Wed Sep 5 01:55:26 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 new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
8      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
9      (but still depend on the tile decompostion of the domain).
10    o pkg/seaice: change a discretization detail to make the B-grid code
11      "more symmetric". This change is likely to remove all "ridges/leads" that
12      where quasi-aligned with the grid in B-grid solutions. It may also be
13      the solution to the stress coupling issues with the B-grid.
14    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
15      remove .cvsignore from input dir. (since testreport no longer run here).
16    o pkg/thsice:
17     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
18     - fix reshaping of sea-ice just after advection:
19       melt all the ice only if ice-volume is too small.
20     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
21       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
22     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
23    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
24      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
25    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
26      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
27      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
28      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
29      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
30      -> update output.txt
31    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
32     this affects truncation error: -> update output.txt of exp:
33      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
34      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
35    
36    checkpoint59f
37    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
38    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
39      a bounded range (in forward mode)
40    o pkg/ecco, ctrl, autodiff and mom_common:
41     internal parameter controls, completements of implementations
42    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
43    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
44      (not seem any difference in testing results).
45    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
46       at face corners.
47    o pkg/generic_advdiff:
48     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
49      loop range indices for computing vertical advection tendency
50      and do the calculation in the interior only (no overlap) ;
51      for now, only implemented for SOM advection (to save CPU time).
52     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
53    o exch2 adjoint
54      First set of changes:
55      - add exch2 hand-written adjoint templates
56      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
57        This will require cleanup in pkg/autodiff/*.F
58        (changed routines currently kept separate in verif. code/)
59      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
60        that used to hide exch2 or cubed-sphere specific code
61        (commented via 'cph-exch2')
62    o pkg/seaice
63      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
64    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
65       output of global_ocean.cs32x15.thsice .
66    
67    checkpoint59e
68    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
69      for B-grid vector (not yet tested) and C-grid vector (<- only used
70      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
71    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
72      (#ifdef ALLOW_SALT_PLUME)
73    o gather_2d/scatter_2d: removed halo regions
74    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
75      scheme and the corresponding test case (under front_relax dir). For now,
76      only available with Skew-flux form and not yet tested in realistic set-up.
77      adjoint: store directives updated, but gradient checks deteriorated,
78      so maybe GM/Redi adjoint is now broken.
79    o seaice adjoint
80      * add AREA, HEFF, HSNOW as control variable
81        (should not change lab_sea results)
82      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
83    o pkg/seaice:
84      * added computation of saltFlux in seaice_growth;
85        For time being, sea ice salinity is assumed constant
86        contribution of snow flooding to freshening of sea ice is neglected.
87        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
88        defaults to 0.0 in order to maintain backward compatibility.
89        Typical values for SEAICE_salinity are 4 to 10 g/kg.
90      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
91      * added SEAICE_availHeatFrac, which specifies fraction of surface level
92        heat content used to melt or grow ice
93      * commented out cap of HICE: it helps keep ice thinner
94      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
95      * applied OBCS T/S mask to HEFFM sea ice mask
96    
97    checkpoint59d
98    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
99     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
100     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
101    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
102     and change default value of parameter "GM_Small_Number";
103     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
104       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
105       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
106    o pkg/ecco: cost function when applying pkg/smooth to controls
107    o pkg/ctrl: add forcingPrecond run time parameter
108    o pkg/seaice:
109     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
110     - fix bug in metric terms of u-equation in LSR solver (implicit part),
111       changes verification/lab_sea
112     - rearrange implicit part of u-equation in LSR solver to make it easier to
113       read, understand, and debug. This causes changes at the truncation level.
114     - fix (serious) bug in the boundary conditions (sign error in the implicit
115       part) of the LSR solver. Changes all LSR results.
116     - fixed problem with HSNOW initialization to avoid thick snow when AREA
117       is initilized with small values - does not change lab_sea results.
118     - added HsnowFile initialization capability
119    o pkg/smooth: addition to model/src and pkg/ctrl so allow
120     initialization of pkg/smooth and application to control vector
121    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
122    o dependencies: pkg/profiles requires pkg/cal
123    o pkg/profiles:
124     - added option ALLOW_PROFILES_GENERICGRID
125         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
126         that interpolation information (grid points and coefficients) is provided
127         within the netcdf input files.
128         -> sample matlab scripts can be found in MITgcm_contrib/gael
129         that allow you to prepare netcdf input files.
130     - also modified: cleaner include statements, cleaner error print statements,
131       cleaner stops when error, and more tests of the netcdf input files consistency.
132    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
133    o pkg/seaice:
134     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
135       requires a new routine: seaice_diagnostics_fill.F
136     - make sure that seaice does not move if not forced (pressure replacement
137       method, Hibler and Ip, 1995), changes results
138     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
139     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
140       It is turned off by default (=-1.), because it changes the results.
141     - make it possible to read AREA from a file, too.
142    
143    checkpoint59c
144    o add S/R and diagnostics for oceanic mixed-layer depth
145    o move GMRedi call after all vertical mixing schemes (including KPP)
146    o pkg/thsice:
147     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
148      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
149    o pkg/obcs:
150     - bug fix for balance code
151    o pkg/seaice:
152      - allow values of SEAICE_elasticParm > 1
153      - add new parameter SEAICE_evpTauRelax as an alternative
154        to SEAICE_elasticParm
155      - make lsr boundary conditions free slip (by default), changes result
156      - add code for no slip boundary conditions for lsr
157      - set minimum of zeta to zero (and not 4e8) (changes results)
158      - add a cap on AREA after advecting AREA if seaice_growth is not called
159    o change calculation of Visbeck K:
160      - no longer depend on tapering scheme; instead, compute slope (limited
161        by GM_maxSlope). this is equivalent to what was comuted before with
162        clipping or linear tappering.
163      - fix vertical averaging (wrong by 1/2 level)
164      - leave the old version (but will not be maintained) within
165        #ifdef OLD_VISBECK_CALC / #endif
166      - update output of exp. ideal_2D_oce
167    o change error catch in calc_r_star to improve vectorization
168    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
169      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
170    o adjoint:
171      Re-organized adjoint checkpointing according to Matt Mazloff
172      (but with modifs/completions/cleanups)
173      Storing is now bundled into large arrays to optimized I/O
174      (and second step in cleanup of the_main_loop)
175    
176    checkpoint59b
177    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
178      - export/import (between ocean & coupler) fields needed for ocean DIC.
179    o pkg/seaice:
180      - get rid of three more exchanges seaice_calc_viscosities (required
181        different loop boundaries in seaice_lsr and seaice_ocean_stress)
182      - bug fix in seaice_ocean_stress (update of lab_sea required)
183      - reduce loop boundaries to necessary minimum also in seaice_evp
184      - go back to the old way of computing deltaC/Z as the adjoint likes that
185        better
186    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
187      passive tracer to an Age Tracer) + update output.txt
188    o pkg/exf:
189      - implement A-grid / C-grid selection for wind-stress input files.
190      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
191      for now, in exf_bulk_largeyeager04.F only :
192      - change implementation for case where windspeed + 2. components wind-stress
193        are read-in. AND use rhoConstFresh to convert evap.
194    o pkg/seaice:
195      - use correct EXCH_UV for wind-forcing (on A-grid).
196      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
197        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
198    o pkg/exf:
199      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
200      EXF_INTERPOLATION:
201      - merge global_with_exf/code version of exf_interp_read.F
202        to the main code ;
203      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
204        reading the file ; Important: This options needs to be defined to recover
205        previous code.
206        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
207      - no longer loose real*8 precision along the way when using exf_iprec=64.
208    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
209      - change discretisation of evp-solver in order to avoid another exchange
210        (changes lab_sea) and clean up a little
211      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
212        help the adjoint (this also changes the results slightly)
213      - add a few "_d 0" where they had been missing in seaice_evp.F
214      - cleaning up: remove unused seaice_calc_rhs.F
215    o pkg/exf: some cleaning-up:
216      - change various "constants" into runtime parameters
217      - cleaned-up Large&Yeager04 routine which should eventually
218        replace exf_bulkformulae.F (changed names of S/R and CPP)
219        and merged various ALLOW_ATM_WIND options
220     only used with thsice pkg (in thsice_get_exf.F):
221      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
222        which are used when useStabilityFct_overIce=TRUE (= the default)
223      - change default values of ice & snow emissivity and scale downward LW
224        by ice & snow emissivity.
225    o pkg/thsice:
226     fix few little problems, in thsice_calc_thickn.F:
227      - growth vertically (and not laterally) if iceFrac == iceMaskMax
228      - melt only laterally if hIce < hThinIce (as the comments say)
229      and in thsice_extend.F:
230      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
231      - start to form ice as soon as the minimum ice-volume is reachable.
232     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
233      and cpl_aim+ocn
234    o pkg/kpp
235     - move computation of surface related input fields to KPP into a new
236       subroutine kpp_forcing_surf.F
237     - remove wrong (within bi,bj loops) EXCH calls.
238     - little cleaning (add argument myThid in last position, cvs header ...)
239     - for now, fix conservation problem by exchanging KPPviscAz (may not
240       be the best fix)
241    o pkg/seaice
242     - check for inconsistent evp parameter/cpp-flag combination
243     - remove leftover errIO flat for obsolete name list error handling
244    o OpenAD
245     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
246    
247    checkpoint59a
248    o pkg/seaice: some parameter clarifications and a little bit of clean up
249    o pkg/thsice: rename run-time parameters:
250       himin       -> hIceMin
251       himin0      -> hThinIce
252       hihig       -> hThickIce
253       i0          -> i0swFrac
254       transCoef   -> bMeltCoef
255       frac_energy -> fracMelting
256      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
257       with default values (for now) that do not change the results.
258      remove old version of thsice vars advection in pkg/seaice.
259    o in FFIELDS.h:
260      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
261      - make pLoad & sIceLoad always available (but still only used if
262         ATMOSPHERIC_LOADING is #define).
263    o pkg/kpp: replaced _KPP_RL with _RL
264    o bug fixes for vertical diffusivity computations when both KPP and
265        3D diffusivity arrays are used.
266    o pkg/seaice: fix bug in evp solver, while doing that
267      - change (improve?) discretization of stress computations for both
268        cgrid-lsr and evp solver
269      - add a new routine to compute strain rates
270      - the above changes lab_sea results
271      - add no slip conditions for evp solver (off by default), lsr-version
272        may follow
273      - fix exchange for shear at Z-points (does not change lab_sea)
274      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
275        (to force the user to pick a time step since there is not "safe" way
276        of choosing it)
277      - add principal stress diagnostics
278      - rearrange fields for evp a little to avoid having to call a: too many
279        exchanges and b: exchanges for stress trensor components which we do
280        not have.
281      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
282        of evp, complete rewrite for lsr case (latter is does not yet work
283        in all cases)
284    o pkg/kpp: add code to have mixing in shelf ice caverns
285      - add myThid to all kpp routines (long overdue)
286    
287    checkpoint59
288    o pkg/exf:
289      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
290        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
291      - move exf header files from lower_case.h to UPPER_CASE.h ;
292        add missing cvs Header & Name
293      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
294      - add namelist param. selectStressGridPosition, exf_monFreq
295      - retire many _CLIM routines, and remove data.exf_clim
296        + params moved to data.exf
297        + climsst, climsss now handled by exf_set_gen, i.e.
298          climss?period=0 refers to constant field,
299          climss?period=-12 to monthly forcing
300      - split up namelists in data.exf
301    o pkg/seaice:
302      - remove seaice_exch and seaice_exch_uv
303      - remove superfluous exchange of theta
304      - add myThid to seaice_budget_ocean/ice
305      - add new interface for atmospheric wind forcing (C-grid only)
306        + new routine
307        + two new field (taux, tauy for stress over ice)
308        + removed one global field (DAIRN) for C-grid case only
309    o pkg/thsise
310      - 2nd set of modifs for thsice adjoint in conjunction with exf
311    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
312    
313    checkpoint58y_post
314    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
315      vertical diffusivity, similar to that in MOM4; turned on using
316      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
317      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
318    o Added capability for 3D specification of background vertical diffusion
319      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
320      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
321      "data" file that contains the 3D vertical diffusivity coefficients.
322    o ice dynamics (pkg/seaice) with thsice thermodynamics:
323      - add code within pkg thsice to advect & diffuse sea-ice fields
324      similar to (and will replace) what has been added in  seaice_advdiff.F,
325      but: - conserving Mass, Heat & Salt.
326           - better when using non-linear advection scheme (not yet fully tested)
327           - can also be used in atmospheric set-up (for now, only the diffusion).
328    
329    checkpoint58x_post
330    o IO option for global-file compact format:
331      - add options when generating topology (utils/exch2/matlab-topology-generator)
332      - add I/O capability (pkg/mdsio).
333      - adapt utils/matlab/rdmds.m to read this format.
334      for now long-line format not yet supported by pkg/mdsio (& exch2).
335    o shelfice: add a few diagnostics
336    
337    checkpoint58w_post
338    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
339      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
340      (and replace horiVertRatio in NH code).
341      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
342                         and tutorial_plume_on_slope (sensitive to truncation)
343    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
344      directly to drive seaice model (C-grid only)
345    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
346     - reintroduce computation of wind from stress,
347     - compute tau (in exf_bulkformulae.F) from windstress averaged to
348       mass points to avoid tau = 0
349     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
350    o rdmnc.m: make it work with "global" files created with gluemnc
351    o rdmnc.m : some improvements in dealing with singleton dimension
352      (tested on all testreport mnc output files).
353    o genmake2: disable pkg/profiles if netcdf test fails.
354    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
355    o move call to cal_readparms up to make calendar parameters/variable available
356      to all packages
357    
358    checkpoint58v_post
359    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
360      useDynP_inEos_Zc tested.
361    o pkg/exf: changes to properly interpolate/mask/scale initial fields
362    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
363      and portions thereof.  See read_cs.txt for description and examples.
364    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
365      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
366      following the great-circle arc between those 2 points.
367    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
368      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
369    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
370     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
371     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
372     - still needs work (not working with some options ; efficiency to improve)
373       and serious testing.
374     - use this scheme for temperature & salinity in 2 advection test exp.:
375       advect_xy & advect_xz, respectively.
376    
377    checkpoint58u_post
378    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
379    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
380    o testreport: add option "-skipdir" to skip some test.
381    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
382      momentum calculation.
383    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
384    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
385      remove checkpoint.F and the_correction_step.F (no longer used);
386      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
387    o add option (linFSConserveTr) to correct for tracer source/sink due to
388      Linear Free surface
389    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
390    o pkg/thsice: fix reading mnc-pickups
391    
392    checkpoint58t_post
393    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
394    o pkg/mdsio:
395     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
396       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
397       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
398     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
399     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
400       either MDS_READ_FIELD or MDS_WRITE_FIELD )
401     - new S/R (to replace MDSWRITEMETA), which allows to write more
402       informations (variable names, time ...) to meta files.
403     - modify rdmds.m to give back the meta file content.
404    o pkg/diagnostics: change vertical interpolation to be safer, and more
405       flexible (define p-levels to interpolate to in data.diagnostics);
406      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
407       diagnostic pointer.
408    o pkg/seaice: more cleaning up of seaice_growth, added many comments
409    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
410    o fix multi-category seaice:
411     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
412       SEAICE_MULTICATEGORY
413     - fix short wave heat flux
414    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
415       and allow to use EVP solver. Change forward lab_sea: test both EVP
416       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
417    o Initial check-in of lab_sea adjoint
418      (very similar to natl_box_adjoint/code_seaice)
419      * used C-grid and EVP solver
420      * used KPP, GM/Redi
421      * uses inAdExact=.TRUE.
422      * gradient checks fail for both ADM and TLM
423        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
424        f.d. gradients actually seem more problematic than ADM, TLM gradients;
425        issue is related to forward mismatch between g77 an ifort
426    o pkg/seaice: overhaul of thermodynamics
427     - growth.F and groatb.F are replaced by new routine seaice_growth.F
428     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
429     - move a few global fields out of SEAICE.h into seaice_growth.F and
430       make them 2D (FICE/QNETO/ ...)
431     - remove FO (it is the same as QNETO)
432     - introduce a few local fields to avoid modifying external fields such
433       as atemp, etc.
434    
435    checkpoint58s_post
436    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
437      changed exf_set_gen.F so that
438        genperiod=0 means input file is one time-constant field and
439        genperiod=-12 means input file contains 12 monthly means
440    o CG2D: use pre-computed solver main-diagonal (stored in common block);
441      this affects truncation error ; generate new output file for exp. which
442      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
443        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
444        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
445        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
446        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
447        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
448    o start implementation of deep-atmosphere and anelastic formulation
449    o verification: remove 2nd copy of input files and use script "prepare_run"
450      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
451    o mom_common/vecinv/fluxform: fix a few initialisation isssues
452    o profiles: fix for multithreaded case
453    
454    o diagnostics: rename few diags:
455      s/'PRESSURE'/'RCENTER '/g
456      s/'TICE    '/'oceFreez'/g
457      s/'TAUX    '/'oceTAUX '/g
458      s/'TAUY    '/'oceTAUY '/g
459      s/'SWFLUX  '/'oceQsw  '/g
460      s/DIFx/DFxE/g
461      s/DIFy/DFyE/g
462      and add few ocean-forcing diagnostics:
463      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
464    o modifications to pkg/seaice/growth.F and budget.F, which change results of
465      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
466      as actual snow thickness.  It now refers everywhere to effective snow
467      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
468    
469    checkpoint58r_post
470    o modifications to pkg/seaice/growth.F, which change results of
471      lab_sea experiment: fixes pertain to melting snow over open water, to
472      masking EVAP under sea ice, and to using the correct AREA variable for
473      computations of EVAP, PRECIP, HSNOW, and GHEFF
474    o add ability to read bathy, salt, and theta using MNC (off by def)
475    o add flooding algorithm and advection of HSNOW for pkg/seaice;
476      both are turned off by default and do no change any results
477    o seaice advection with pkg/thsice: a step toward the use of non-linear
478      advection scheme, but #ifdef or commented out for now (requires more EXCH).
479    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
480      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
481      in natl_box (affects results @ truncation level: update output.txt)
482    o multi-threading and IO:
483      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
484      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
485        (needed to work with SingleCpuIO): tested in all verif. exp.
486    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
487      affects the results (but none of the verification test uses this scheme).
488    o Adding some pkg/diagnostics capability to pkg/seaice
489      (will certainly be subject to changes)
490    o ctrl: adding new control variables:
491      lwflux, lwdown, evap, snowprecip, apressure, runoff
492    
493    checkpoint58q_post
494    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
495      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
496      high_res_cube configuration by 4% on Columbia.
497    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
498      add (in global_with_exf/code) a version of EXF_INTERP_READ without
499      dynamical allocation (seems to work in multi-threaded).
500    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
501      single CPU io) so that TAF does not have to see EESUPPORT.h
502    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
503    
504    checkpoint58p_post
505    o obcs: stop if obcs is used with useCDscheme = .true.
506    o shelfice:
507     - fix a sign error so that no slip at shelfice interface works
508     - remove stop for combination non-hydrostatic code and shelfice. That does
509       not mean, that the results are correct, but at least they are numerically
510       stable
511    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
512    o added adjoint exch routined for all exch*3d* routines
513      and updated flow directives
514    
515    checkpoint58o_post
516    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
517      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
518    o change controling S/R for writing pickup file (new S/R do_write_pickup)
519      and clean-up reading/writing of pickup files.
520    o fix local version of read/write pickup (NH part) in rotating_tank/code
521    o simplify EXCH interface:
522     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
523     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
524    o added the regrid package
525    o shelfice:
526     - add a simple boundary layer scheme to reduce noise
527     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
528    
529    checkpoint58n_post
530    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
531       local variable (not in common block).
532    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
533      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
534      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
535        to work with SingleCpuIO.
536    o add "_d 0" to real constant of pkg/cfc subroutines ;
537       update exp. cfc_exemple & tutorial_cfc_offline output files.
538    o multi-threading and IO:
539      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
540        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
541      - barrier before and after reading.
542      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
543      - avoid using MDS_WRITELOCAL for LAND pkg output.
544      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
545        common-block variables ; Allows multi-threading with master-thread IO.
546    o change default MAX_NO_THREADS from 32 to 4 ;
547      and stop cleanly when MAX_NO_THREADS is too small.
548    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
549    
550    checkpoint58m_post
551    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
552       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
553    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
554       keep global_ocean.90x40x15 (for AD testing) with former secondary test
555       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
556    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
557        add MITgcm_tutorials (= code + all the tutorials)
558    o ecco, option to compute cost for total ssh (mean+anom)
559    o consistent with addition of ptracer and ssh in pkg/profiles
560    o profiles: adding ptracer and ssh
561    o testreport: change multi-test output-file name
562      (from output.txt.{name} to output.{name}.txt)
563    o profiles: now ok for mutli-tiles case
564    o seaice: add 4 parameters for different advection schemes for area,
565      (effective) seaice thickness, enthalphy, and snow height. Their default
566      is the standard parameter SEAICEadvScheme
567    o calc_gw:
568     - add cosFacU in zonal viscous flux (harmonic.visc.).
569     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
570       of tutorial_plume_on_slope.
571    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
572    o calc_gw: true flux-form, account for horizontal grid spacing.
573      update rotating_tank results, but not plume_on_slope (affected at
574      truncation level, 11 digits).
575    
576    checkpoint58l_post
577    o calc_gw:
578     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
579     - remove side-drag for now (need to fix it); update plume_on_slope results.
580     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
581    o commit code to make SST/SSS weights spatially variable
582      (based on either variable in-situ or variable initial T/S weights)
583    o pkg/ecco:
584      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
585        now based on horizontally varying weights wthetaLev, wsaltLev
586      * cost_averagesflags now returns year indices in addition to day, month
587      * sflux balance is performed on annual basis
588        (sflxumm, sfluxmm2, bal_sfluxmm)
589      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
590        including separate counting and multipliers
591    o pkg/rbcs
592      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
593    
594    checkpoint58k_post
595    o testreport:
596     - always build in dir. "build" (if not there, mkdir build instead of building
597       & running in input)
598     - run in dir run (if it exists), in build otherwise.
599     - call prepare_run (if input/prepare_run exists)
600     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
601    o pkg/exf modifications to interpolation and rotation routines for more
602       reasonable treatment of North Pole singularity: for tracers North Pole
603       value is set to northernmost zonal-mean value, for zonal velocity it is
604       set to zero, and for meridional velocity it is set to northernmost value.
605    o pkg/exf/exf_check_range.F
606     - add tile index to diagnostics and move stop statement to the very
607       end of the routine.
608    o pkg/diagnostics: (diagnostics_main_init.F)
609      define title of isomorphic variables according to the current config.
610    o pkg/thsice with pkg/seaice dynamics:
611    - fix domain of computation (interior only, required for exf) and do exchanges
612    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
613    o towards a standard way of dealing with multi-threading in MONITOR
614      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
615    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
616       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
617    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
618    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
619    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
620       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
621    o tracer advection:
622     - clean-up and simplify calc_common_factors.F
623     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
624       advection subroutine (but still not used within DST advection S/R)
625    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
626    
627    checkpoint58j_post
628    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
629      from file (collects calls previously in FORWARD_STEP)
630    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
631    o adjoint store dir. adjusted accordingly
632    o genmake2
633      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
634    
635    checkpoint58i_post
636    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
637      on wind stress (SEAICEstressFactor defaults to 1.)
638    o Total number of Timers is finite (<=40): comment out 2 non-essential one
639      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
640    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
641      on CS-grid: no longer loosing mass.
642    o exf & curvilinear-grid: no longer modify longitude xC & xG.
643    o pkg/ggl90: fix sloppy output and fix a bug
644    o pkg/seaice: added SEAICEuseEVPpickup parameter
645      - Set to false in order to start EVP solver with
646        non-EVP pickup files when using SEAICEuseEVP
647      - fix sign error in diffusion in seaice_calc_rhs
648    
649    checkpoint58h_post
650    * Modifications for bottom topography control
651      o replace hFacC by _hFacC at various places
652      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
653      o add non-self-adjoint cg2d_nsa
654      o update autodiff support routines
655      o re-initialise hfac after ctrl_depth_ini
656      o works for 5x5 box, doesnt work for global_ocean.90x40x15
657    * Adding verification for 5x5 box (4-layer) bottom topography control
658    
659    checkpoint58g_post
660    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
661       used for mean seasonal cycle, mean diurnal cycle); add an example
662       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
663    o pkg/ggl90:
664      - add parameter (minimum surface kinetic energy)
665      - fix bug (avoiding division by zero)
666    o couple pkg/thsice to pkg/seaice:
667      - modify advection in seaice to accomodate new scalar fields to be advected
668      - only muliDimAdection scheme work with seaice/thsice
669      - mapping of thsice-variables to seaice-variables, back and forth
670      - does not break the verification experiments, but does not give the
671        desired results either
672    o pkg/seaice
673      - make (default) second order advection a bit less confusing?
674    
675    checkpoint58f_post
676    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
677      to pkg/seaice):
678      - new routines thsice_map_exf and thsice_get_exf provide the interface
679      - add an additional formal parameter to thsice_solve4temp
680    o pkg/exf:
681      - add new fields wspeed, snowprecip (to be able to couple to thsice)
682      - correct Stefan-Boltzmann constant
683      - new parameter for longwave surface emittance
684      - separate some stuff from exf_bulkformulae into new routines  
685        exf_radiation, exf_wind
686      - add new parameters and constants: longwave emissivity for ocean, ice
687        and snow, evaporation parameters over ice
688      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
689        either wind from stress or stress from wind
690    o pkg/thSIce:
691    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
692    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
693       and THSICE_CALC_THICKN
694    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
695    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
696      to make debugging easier.
697    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
698    o pkg/bulk_force:
699      - clean-up comments and parameters ;
700      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
701    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
702      generate new output for test-experiment: aim.5l_cs.thSI
703    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
704      testreport accordingly
705    
706    checkpoint58e_post
707    o SEAICE_CGRID adjoint done
708    o R_STAR adjoint implemented.
709      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
710      * need to sort out init. of h0facc, etc.
711    o Make pkg/profile fully independent of ecco,cost, etc. stuff
712      to be able to use it in pure forward.
713    
714    checkpoint58d_post
715    o upgrade simple test-experiment to tutorial example:
716     step.1: duplicate the experiment and (step.2) will remove the old copy.
717      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
718      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
719      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
720      tutorial_global_oce_biogeo    <- copy of dic_example
721      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
722      tutorial_plume_on_slope       <- copy of plume_on_slope
723      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
724      tutorial_global_oce_optim     <- empty for now (David ?)
725      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
726     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
727    o correct a sign problem in cost_scat.F
728    o obcs and ptracers: fix boundary conditions for advections schemes
729      with larger stencil
730    o thsice adjoint: start
731    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
732      completeness
733    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
734      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
735    o ptracers adjoint:
736      * avoid extensive recomputatations
737      * fix missing re-init. of gptr (missed by TAF)
738    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
739      me to turn off the excessive output to STDOUT that this package produces
740    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
741      and add those terms in Vector-Invariant formulation.
742    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
743      if the control period (xx_hfluxperiod etc) is 0
744    o in profiles pkg, clean routines and fix details
745    o in ecco pkg, reading ssh data:
746      fix problem in case the model does not start at iter0=0
747    o fix mnc-pickup/restart for ptracers
748    o new package prifiles:
749      code to compute profile-based cost by Gael Forget
750      (modifs in ecco, ctrl, autodiff)
751    o Benign bug fix in initialization (spotted by M. Mazloff) of
752      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
753    
754    checkpoint58c_post
755    o adjoint: finish NLFS adjoint and provide reference output in
756      verification/global_ocean.90x40x15/results_ad_nlfs
757    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
758      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
759      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
760      with SEAICE_CGRID defined.
761    o move calendarDumps from "data" to "data.cal" and clean-up the code
762      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
763    o add useEXF & useCAL flags (for now, set in hard-coded way)
764    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
765      (were missing in NH mode, and wrong in quasihydrostatic mode).
766      waiting for Chris updated version of calc_gw to add those CALLs.
767    o fix bug in quasihydrostatic S/R ;
768      add a test for this option: global_ocean.90x40x15.qshyd
769    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
770      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
771    o add on/off flag useOffLine for package OFFLINE
772    o seaice:
773      - modify advection so that it works also on the C-grid
774      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
775        problem in multi-tile runs with C-grid
776      - add flags for clipping ice velocities and/or masking solver forcing
777      - fix drag (ocean on ice) formulation and a bug that caused noise in the
778        C-grid solver
779      - added a few comments to seaice_diffusion.F
780      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
781        are now exclusive)
782      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
783        required re-ordering the code a little:
784       + make DAIRN global variable (defined in SEAICE)
785       + move computation of the viscosities eta and zeta into a new separate
786         routine (because I need to recompute them in seaice_ocean_stress.F)
787    
788    checkpoint58b_post
789    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
790      update output.txt of exp. aim.5l_cs.thSI
791    o various mnc cleanups and improvements:
792      + shrink lookup tables by factor of ~4
793      + better error reporting when running out of lookup space
794      + able to handle longer path/file names (up to 500 chars)
795    o adjoint:
796      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
797      - TBD: "hidden" mom_vecinv recomp. in dynamics
798    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
799     (allow to differentiate between forcing components using new integer flags:
800      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
801     and add new flag to put Dissipation tendency out of Adams-Bashforth.
802    o ecco
803      - enable trend removal from SSH anomaly obs.
804    o adjoint
805      - a fix for PmEpR when #undef EXACT_CONSERV
806      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
807      - try to fix "hidden" recomp. in forward_step for NLFS
808        (NLFS seems broken sometimes after I checked it in)
809    o seaice:
810     - add c-grid version of the dynamic solver:
811       + three new routines that are the c-grid substitute lsr, dynsolver
812         and ostres
813       + put a few fields that were local to dynsolver into global common
814         blocks, so that I can move the computation of stresses etc into
815         seaice_lsr (saves coding but may break the adjoint).
816     - replace more hardwired parameters by runtime parameters
817     - add ice masks that mask the rhs of the implicit solvers where there
818       is no ice (commented out in seaice_dynsolver, because i am not sure
819       if this works properly), eventually this should replace the clipping
820       of ice velocities in seaice_dynsolver to +/-40cm/s.
821    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
822      include it only where its needed
823    o move balancing of fluxes before the call of external_forcing_surf
824    o seaice:
825      - correct units of turning angles (now they are really in degrees)
826      - move computation of GWATX/Y out of main routine into dynsolver
827      - initialize GWATX/Y in seaice_init
828    o Apply mask on Fresh-Water flux (needed for SSH forcing).
829      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
830    o seaice: add runtime flags for turning angles (default to zero)
831    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
832      and trend from exf forcing and ctrl control adjustments
833    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
834      (since checkpoint57x_post)
835    o change the default rotation period to 86164.s = the Earth rotation
836    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
837      and based on a reference stratification. Tested within hs94.cs-32x32x5.
838    o seaice advection: add code for choosing between the default (2nd order
839      central differences) and multiDim advection schemes provided by
840      pkg/generic_advdiff
841    o seaice:
842      - removed all references to SEAICE_GRID.h fields from
843        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
844        (cubed-sphere configuration will change a little)
845      - grid computations in seaice_init are obsolete now.
846      - cleaned up code a little so that is easier to read (hopefully).
847      - added new (better?) discretizations of default advection and diffusion
848        (turn on with SEAICEuseFluxForm)
849      - replace 1 in 3d global fields by kSurface in growth.F
850      
851    checkpoint58a_post
852    o seaice:
853      - bug fix in advect.F
854    o shelfice:
855      - separate shelfice load anomaly from pload (breaks with time
856        dependent forcing), => introduce constant field shelficeLoadAnomaly.
857        Its default is 0., but it may be computed more cleverly from (unknown)
858        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
859        done offline. A good approximation of the pressure load anomaly is
860        necessary to avoid large initial adjustment processes underneath
861        deep-reaching shelfice.
862      - small fix in ISOMIP shelfice_thermodynamics
863      - add more sophisticated thermodynamics of Hellmer (1989), this is
864        now the default
865      - give a few constants more intuitive names
866    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
867      if bulk formulae are used in long integration (especially EmPmR). Turn
868      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
869      if balancePrintMean, the imbalance that is substracted is printed to
870      STDOUT.
871    o fix bug (typo) in obcs_apply_eta.F
872    o add a new package shelfice which enables us to model the circulation
873      underneath shelf-ice with draughts of hundreds of meters.
874     - works
875     - to do: + include improved thermodynamics
876              + check whether kSurfC (from model/inc/SURFACE.h) can be used
877                instead of new field kTopC
878              + can we use topoFile, Ro_surf and existing code in ini_depth.F
879                instead of new field R_shelfIce and new code in ini_depth.F
880                and ini_mask_etc.F?
881              + adjust vertical mixing schemes?
882    o seaice pkg:
883     - add a cpp-flag to include a simple formula for a salinity dependent
884       freezing point of sea water at the surface
885     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
886       meridional stresses are now different (and hopefully correct)
887    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
888       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
889       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
890    o pkg/diagnostics: add options and parameters for regional-statistics
891       diagnostics ; define regions by reading a region-mask from a file
892       (might add other options later)
893    o pkg/bulk_force:
894     - add option and parameters to use AIM surface-flux formulae.
895     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
896       others forcing fields (defined in PARM05, parameter file "data") are loaded
897       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
898     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
899     - use the right EXCH call for uwind,vwind (to work on CS-grid).
900     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
901       and parameters (note: calcWindStress replaces .NOT.readwindstress).
902     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
903    
904    checkpoint58
905    o add "--embed-source" option to genmake2 which, when the supporting
906      tools can be compiled (as determined by genmake2) will turn on the
907      embed_files package which then embeds the entire MITgcm source code
908      (*.[fFhc] + Makefile) used for the build within the executable
909      - requested by CNH but off by default
910      - adds a paltry <9MB to the mitgcmuv executable in most cases
911      - only writes the output when useEMBEDSRC in eedata is true
912    o clean up 3-dim. relaxation codes:
913      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
914      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
915      * Thanks to Tom Haine for testing!
916    
917    checkpoint57z_post
918    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
919      affects output (@ truncation level) of exp. plume_on_slope ; updated.
920    o fix the pickup behavior for obcs in combination with ptracers
921    o fix a bug in ptracers_external_fields_load
922    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
923      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
924    o transfered surface NH pressure to eta field (if exactConserv).
925    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
926         and update lab_sea output.txt file.
927    o completing 3-dim. relaxation code: additional term
928         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
929      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
930      * At compile time, in "EXF_OPTIONS.h" set
931          #define  ALLOW_CLIMTEMP_RELAXATION
932          #define  ALLOW_CLIMSALT_RELAXATION
933      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
934          tauThetaClimRelax3Dim = 15552000.0,
935          tauSaltClimRelax3Dim  = 15552000.0,
936      * 3 cases:
937          1) Use a constant-in-time 3-dim. field
938          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
939          3) Real-time relax. to time-evolving prescribed field
940    o Adding Laplacian-type smoothness constraint on
941      initial and boundary (forcing) controls (ic, bc)
942      * enable at compile-time via
943        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
944      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
945      * Absolute scale somewhat unclear so far
946      * no area weighting was included since no other cost term does so far
947    
948    checkpoint57y_post
949    First step for a NLFS adjoint
950    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
951    o new init. routines for calc_r_star, calc_surf_dr
952    o still need to deal with ini_masks_etc
953    o testreport seemed happy
954    checkpoint57y_pre
955    
956    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
957    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
958    o add new offset feature to offline pkg (plus minor cleanup)
959    o cfc fixes for final year of integration
960    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
961      be in GCHEM_OPTIONS).
962    
963    checkpoint57x_post
964    o fix testreport Pb in multiple test experiment.
965    o cleanup our namelist syntax in verification:
966      - make it more F95 standards compliant (some work still needed)
967      - allows the vast majority of our tests to work with gfortran
968    o Non-Hydrostatic:
969     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
970     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
971    o Allow to apply AB on T,S rather than on AB(gT,gS):
972     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
973     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
974       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
975     - need a "clever" read_pickup to restart from the other AB formulation
976    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
977    o remove some unused variables (reduces number of compiler warnings)
978    o adjoint
979      * Disable useVariableViscosity for adjoint for time being
980        (there are a number of extensive recomputations)
981      * Initialize certain variables needed for adjoint
982    
983    checkpoint57w_post
984    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
985                 fix the singleCpuIO RS version of MDSWRITEFIELD
986       and add a WARNING if using globalFiles=T with multi-processors.
987    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
988      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
989    o tracer advection scheme:
990      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
991       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
992       was not very convenient).
993      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
994       (further tests needed for the implicit DST & Flux-Limiter schemes).
995    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
996      and sRef for convenience, handy, when you want to initialize
997      ptracers in a large domain with a constant non-zero value. Also,
998      untangle ptracers_init.F a little.
999    
1000    checkpoint57v_post
1001    o change dome exp. to use variable viscosity in side-drag terms.
1002    o remove all the files from the cfc_offline test since they are now
1003      incorporated into tutorial_cfc_offline which has been producing
1004      identical results for a few days of testing
1005    o add new parameter: sideDragFactor to enable half-slip-side BC
1006      and change side-drag S/R to use viscosity from mom_calc_visc
1007      (can switch back by setting sideDragFactor=0.); affects results at
1008      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1009       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1010    o vorticity & strain are now computed without masking, to account for
1011      no-slip-side BC in variable viscosity calculation ; mask is applied
1012      anyway later on, before computing advection/coriolis terms.
1013    o modify exp4 to test new obcs support for reading from external files
1014      and for passive tracers
1015    o fix behavior of ptracers_monitor when monitor output is written to a
1016      netcdf-file; still not independent of monitor.F (writes in the same
1017      file).
1018    o change default value of tRef (put a uniform, meaningful value for ocean
1019      & atmos) and initialize sRef (was missing, as Martin mentioned).
1020    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1021      to be proportional to enstrophy dissipation length.  Thus,
1022       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1023      This is now consistent with Smagorinsky and with the manual.
1024    
1025    checkpoint57u_post
1026    o OBCS and PTRACERS: add open boundary support for passive tracers
1027      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1028        OB-values from file; this is not different from the way theta and salinity
1029        are treated
1030      - however, Orlanski-radiation conditions are not supported, and the model
1031        will stop if you use pTracers and Orlanski at the same time.
1032      - beefed up the rountine obcs_external_fields_load: now only those open
1033        boundary values are overwritten with values from files for which there
1034        are really files, otherwise the OB-fields remain untouched. This makes
1035        it possible to use different OBs at different ends of the domain (as
1036        with EXF)
1037    o reduce number of exch calls in shap_filt (s2).
1038    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1039      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1040    
1041    checkpoint57t_post
1042    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1043    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1044      same truncation, independent of the face number: affects affects several
1045      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1046    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1047      note that biharmonic viscosity + no-slip was not tested in any experiment.
1048    o fix bug in non-linear free-surf side-drag ; generate new output for
1049      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1050    o make mnc honor the writeBinaryPrec flag for most kinds of output
1051    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1052    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1053      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1054    o add brackets in multi-terms sum to get same truncation, independent of
1055      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1056      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1057    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1058      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1059      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1060      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1061      Suggested values of viscosity parameters found in mom_calc_visc.
1062      Many new viscosity diagnostics available.
1063    
1064    checkpoint57s_post
1065    o Add clearing-house for viscosity calculations, mom_calc_visc and
1066      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1067      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1068      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1069      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1070      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1071      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1072      ViscAhStrain and viscAhTension are now retired.
1073    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1074    o In response to JMC's bug report, genmake2 now ignores any soft-links
1075      that it finds in the *current* directory when searching for files.
1076      Soft-links found in any other source directories will still work as
1077      they did before.
1078    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1079      a C routine to unlimit the stack size
1080    o mnc-ify pkg/aim snapshot vars
1081    o mnc-ify pkg/land as requested by Daniel
1082    o various changes to mnc including:
1083      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1084      - output can now be grouped so that all files within a group
1085          change the ITER portion of their names in lock-step together
1086      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1087          and works with both EXCH1 and EXCH2 (but needs more testing)
1088      - writing works for all verification test cases w/ g77 on Linux
1089    
1090    checkpoint57r_post
1091    o make MNC variable initialization happen earlier
1092    o add diagnostics for (almost) each term of the momentum Eq.
1093    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1094    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1095    o remove MINIMAL_TAVE_OUTPUT option ;
1096      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1097    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1098      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1099    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1100    o add time-dependent SST, SSS control
1101    o cost terms in ecco/ modularized (new cost_generic.F)
1102    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1103    o new infrastructure for seaice model vs. obs misfits in seaice/
1104      * driver from the_main_loop.F is seaice_cost_driver.F
1105      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1106      * gradient check in Exp. 6a of natl_box_adjoint/
1107    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1108      (see README file)
1109    
1110    checkpoint57q_post
1111    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1112    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1113      - bug was reported by Jean-Michel and Ian Fenty
1114    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1115      update exp. cpl_aim+ocn output.
1116    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1117      Needed for high-res. runs with large global files
1118      to be able to limit tapelev size
1119    o Changed some tests for adjoint:
1120      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1121      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1122      * global_ocean.90x40x15/ back to default 3-level checkpointing
1123    o Modifications to enable scripted COMMON to MODULE conversion
1124      * verification/OpenAD/code/ has necessary scripts and description;
1125      * converts, compiles and runs successfully;
1126    
1127    checkpoint57p_post
1128    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1129    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1130      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1131    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1132    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1133      (was already the case for dissipation with mom_vecinv,
1134       and also the case for grad.PhiHyd when staggered-timeStep)
1135      This will allow to put dissipation out-off the AB time-stepping.
1136     Unfortunately, affects truncation error. Update output of exp. that "fails"
1137      (cg2d matching number) and leave the others for later: front_relax(10),
1138      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1139      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1140    
1141    checkpoint57o_post
1142    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1143      (2) its ready to be documented during the 20050801 DocFest
1144    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1145      for ideal_2D_oce and lab_sea on linux_ia32_g77
1146    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1147      in global1x1_tot/code_seaice_adj to access indices 32, 33
1148      (worth another tag)
1149    
1150    checkpoint57n_post
1151    o adding precip control xx_precip 32
1152    o adding swflux control xx_swflux 33
1153    o Replacing 10 forcing penalty cost routines by 1 generic.
1154    o Implementing partitioning in time-mean and variable adjustment
1155      for atmos. state.
1156    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1157    o in natl_box_adjoint:
1158      * updated exp 1 to 10
1159        (but does not have time-mean vs. variable split results yet)
1160    o updated global1x1/*_seaice_adj/
1161      to incorporate latest changes
1162    o enable useSingleCpuIO for mdsio vector routines
1163      (applies in particular to tapelev I/O)
1164    o removed inefficient K-loop in all active_file*control*.F
1165    
1166    checkpoint57m_post
1167    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1168      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1169    o pkg/exch2: filling of face-corner halo regions is optional
1170      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1171    
1172    checkpoint57l_post
1173     tag before updating tutorials (pre-release-2)
1174    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1175       for output and interpolation of input fields onto model grid)
1176    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1177       Affects results of exp. rotating_tank ; update output.txt.
1178    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1179          and taking the square quantity and/or using a fraction-weight field.
1180    o fix aim_diagnostics_init.F mate numbers.
1181    o add mnc output capability to diagnostics/diagstat and update
1182      our cvsignore files for the ACSII output generated
1183    
1184    checkpoint57k_post
1185    o lab_sea now uses diagnostics package and provides a suite of
1186      new EXF diagnostics output.
1187    
1188    checkpoint57j_post
1189    o exf
1190      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1191        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1192        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1193      * extended diagnostics output
1194        - now includes all EXF variables
1195        - hs, hl moved to common block
1196        - separate S/R for diagnostics, called after ctrl vector is added
1197        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1198        - EXFqnet contains true Qnet (i.e. includes qsw)
1199      * updated verif. lab_sea, global_with_exf
1200      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1201        to ensure that diagnostics sees a true EXFqnet
1202    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1203    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1204      several times with different frequencies.
1205    o mnc-ify the thsice package as requested by Daniel Enderton
1206      - the monitor--MNC output needs work
1207      - many attributes need to be added (most are currently blank)
1208    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1209      - many attributes need to be added (most are currently blank)
1210    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1211    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1212    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1213      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1214         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1215    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1216     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1217    
1218    checkpoint57i_post
1219    o Diagnostics package was changed: diagnostic allocation is now deactivated
1220      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1221    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1222      add 1rst Order upwind vertical Shear.
1223    o add a quick fix for A/B checkpointing in OFFLINE mode
1224    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1225      end-run around the C/Fortran linking horror in eesup/src/timers.F
1226    o added pkg/runclock: allows user to terminate run based on wall clock
1227    o added non-hydrostatic scaling parameter: nh_am2
1228    o pkg/my82: futile attempt to make results compiler-independent by adding
1229      some "_d 0", etc. no effect.
1230    o for mnc output, fill the 'T' coordinate var with myTime and create a
1231      separate 'iter' variable for iteration count
1232    o pkg/diagnostics:
1233      add new capability: output of Global/Regional & per-level statistics ;
1234      tested against monitor output (including land & thSIce) on various exp.
1235    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1236    
1237    checkpoint57h_done
1238      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1239      data.diagnostics, data.gchem, data.ptracers) is done.
1240    
1241    o pkg/diagnostics: prepare for Global/Regional statistics.
1242      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1243    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1244      and rename it: DIFFERENT_MULTIPLE
1245    
1246    checkpoint57h_post
1247    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1248    o pkg/diagnostics: change output frequency, now in seconds (instead
1249      of Nb of iterations). This requires to change data.diagnostics.
1250    checkpoint57h_pre
1251    
1252    o in mnc, let the user create the output dir if both mnc_outdir_date
1253      and mnc_outdir_num are false
1254    o add fflags() to pkg/diagnostics which allows one to specify, on a
1255      per-file basis, the file precision [default behavior is unchanged]
1256    o added diagnostics to pkg/kpp, including computation of mixed layer
1257      depth based on a temperature/density criterion
1258    o updated verification/natl_box to test the new pkg/kpp diagnostics
1259    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1260    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1261    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1262      not mnc -- this mistake was found by JMC and is now corrected
1263    
1264    checkpoint57g_post
1265    o add Adams-Bashforth 3rd Order time stepping:
1266      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1267      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1268    checkpoint57g_pre
1269    
1270    o make lambda[Theta,Salt]ClimRelax spatially varying
1271      (default remains spatially uniform constant based on tau)
1272    o added new control variables
1273      * init. uVel, vVel, etanN
1274      * lambda[Theta,Salt]ClimRelax
1275    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1276      (suggested by G. Forget)
1277    
1278    checkpoint57f_post
1279    o add parameter "baseTime" = model base time = time at iteration zero
1280      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1281      account for baseTime shift
1282    o move Coriolis arrays from PARAMS.h to GRID.h
1283    checkpoint57f_pre
1284    
1285    o mnc-ifying the seaice package
1286    o introduced an alternative length scale calculation for use in the limiting
1287      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1288    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1289    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1290      as well as grad(vort3).  Made it compatible with both approximate form
1291      for the cubed sphere and full form of these gradients.  Added flag
1292      useFullLeith to select between approximate and full form.  
1293    o add "d0" in getcon.F to reduce differences between compilers/platforms
1294      update output.txt of exp. fizhi-gridalt-hs
1295    o change port_rand funtion to allow to set the seed.
1296    o fix obscure MNC bug involving conversion between reals and integers
1297      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1298        new version is now more standards-compliant
1299    o adjoint-related modifications
1300      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1301      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1302      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1303    
1304    checkpoint57e_post
1305    o Adding eddy stress controls a la Ferreira et al.
1306    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1307    
1308    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1309      update output.txt of exp. fizhi-gridalt-hs
1310    o add more "Z" dimensions and associated coordinate vars to MNC
1311    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1312    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1313      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1314      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1315      months and years.  Requires pkg/cal.
1316    o diagnostics: add pickup functionality
1317      - off by default for backwards compatibility
1318      - current version only uses MDSIO -- MNC will be added
1319    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1320    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1321    
1322    checkpoint57d_post
1323    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1324    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1325      output from the diagnostics package
1326    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1327    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1328      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1329    o add coordinate variables to the MNC output from the diagnostics package
1330    o change MNC-flags default value: true when useMNC=TRUE
1331    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1332      the ability (off by default) to read the grid information using MNC
1333    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1334    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1335    o do snap-shot diagnostics at the middle of the time-interval (instead of
1336      at the end).
1337    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1338      new test for AIM with thSIce + slab-ocean
1339    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1340    o move state variable diagnostics to the beginning of the time step ;
1341      (note: still needs some work specially for snap-shot diagnostics)
1342      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1343    
1344    checkpoint57c_post
1345    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1346    o generate new output.txt files on faulks with g77 & the new -ieee option
1347    checkpoint57c_pre
1348    
1349    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1350      update output.txt of exp. global_ocean.90x40x15
1351    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1352      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1353    o add saltFlux(+File) forcing capability with periodicExternalForcing
1354    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1355    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1356    o improvements for the MNC output from DIAGNOSTICS:
1357      - correct handling of the unlimitied dimension
1358      - all dims now have associated coordinate variables
1359      - variables located at U, V, and Corner ("Z") points are now written
1360        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1361        *all* data points are output
1362    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1363    o added pkg/seaice/seaice_monitor.F
1364    o mdsio_readfield.F can now read files visible only to master MPI process.
1365    o pkg/seaice: some test code for ice-modified ocean stress
1366    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1367      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1368      spurious negative numbers for precipitation and humidity.  Will cause
1369      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1370    o pkg/ctrl/
1371      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1372        May be enabled via doPackDiag
1373      *  introduce z-scaling of
1374         + gradient (doZscalePack) and
1375         + control (doZscaleUnpack)
1376    o pkg/mdsio/
1377      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1378      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1379    
1380    checkpoint57b_post
1381    o simplify options in diagnostics_fill arguments (remove weird combinations)
1382    o fix MNC coordinate variables so that they now contain per-face index
1383      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1384      general, EXCH2 grids are only aligned to a "local" coordinate system
1385    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1386    o Implement instantaneous output within pkg diagnostics:
1387      setting a negative frequency in data.diagnostics produces
1388     "snap-shot" output (as opposed to time-average if freq > 0)
1389    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1390      NOTE: change ptracer diagnostics name: use 2 characters to work with
1391            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1392    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1393      becomes the coordinate variable for the 'T' dimension
1394    o add CF-style coordinate variables to MNC
1395      - just a first cut:  numbers are meaningless on the cubesphere and
1396        missing along the T axis but otherwise it works!
1397    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1398    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1399    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1400      this is based directly on what the model compute, so that the content of
1401      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1402    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1403    o clean up build options files for SunOS, in particular
1404      - remove -traditional from xmakedepend
1405      - change -xarch=v9 to -xarch=native for f77
1406      - restore use of make (not gmake)
1407      - add CC=gcc if using g77
1408    o changes per discussion of AM, JMC, & EH3 today:
1409      - move redundant "grid" variables out of "state" -- in preparation of
1410        creating proper CF-style coordinate variables and in recognition
1411        that any/all grid variables can be easily copied (eg. w/NCO) from
1412        the grid files into any of the other NetCDF files
1413      - *always* output grid variables with MDSIO (this will eventually be
1414        changed)
1415      - output MNC grid file if useMNC is true
1416    o every instance of _END_MASTER() has been found and replaced with
1417      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1418      preprocessors
1419    o re-arrange diagnostics pkg initialisation:
1420     - allow each package to extend the available diagnostics list
1421     - add some checking and fix small problems (multi-threaded, ...)
1422     - new S/R diagnostics_fill (replace fill_diagnostics):
1423       look through the short list of active diag. (instead of the long list)
1424       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1425    
1426    checkpoint57a_post
1427    o this set of changes restores TAMC compatibility
1428      tested for global_ocean.90x40x15 adjoint on trough
1429      (what a pain)
1430    
1431    checkpoint57a_pre
1432    o some modifs in tools/build_options for sunos
1433    o call ctrl_pack for ctrl at end for optimcycle=0
1434    
1435    checkpoint57
1436    o add horizontal bi-harmonic viscosity for vertical velocity
1437      - new parameter viscA4W (defaults to viscA4)
1438      - affects only non-hydrostatic code
1439      - to be done: no-slip lateral boundary conditions
1440    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1441    o implement Implicit Vertical advection for pTracers
1442    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1443      (implemented also for implicit vertical diffusion & advection)
1444    o OBCS: extend application of tracer open boundary conditions
1445      to a strip beyond the boundary of width Olx/Oly
1446    o add call monitor to TAF set of required calls (flow directives)
1447      and include in natl_box_adjoint
1448    o untangle a few ifdefs related to cost, ctrl, autodiff
1449      untangel a few ALLOW_ECCO_OPTIMIZATION
1450    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1451      (theta2, salt2 in ecco_cost_weights)
1452    
1453    checkpoint56c_post
1454    o OBCS as control variables
1455      - update ctrl_ad_diff.list, obcs_ad_diff.list
1456      - remove balance of obcs controls from default
1457      - fix index bug nobcs in ctrl_init
1458      - fix dummy fields filen in ctrl_pack
1459      - add dummy weights for obcs
1460    o lsopt: comment out fort.94 output
1461    o optim:
1462      - remove unnecessary header files
1463      - adjusted namelists
1464      - add xerbla.F to Makefile
1465    o exf:
1466      - multiple modifications of exf_check_range
1467      - unit change in exf_init_runoff from [m/year] to [m/s]
1468    o mdsio:
1469      - i/o-vector change debugLevel from debLevA to debLevB
1470    
1471    checkpoint56b_post
1472    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1473      is called from DO_THE_MODEL_IO
1474      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1475      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1476      - clean up PTRACERS_WRITE_TIMEAVE a little
1477    o add another verification experiment that tests both the cfc-pkg and
1478      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1479      reactive tendencies treated inline with regular timestepping
1480    o testreport previously did a lousy job of comparing small numbers, so
1481      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1482      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1483      testreport.
1484    o ptracers_monitor: bug fix for MPI
1485    
1486    checkpoint56a_post
1487    o GCHEM: finish reorganizating the package
1488      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1489        (introduces another 3D-array for each passive tracer, but only if
1490        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1491        gchemTendency is not needed because the timestep is done separately)
1492      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1493      - GCHEM is now---more or less cleanly---separate from PTRACERS
1494      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1495        so clear to me how that should be done in a general way.
1496    o CFC: improve formatting of output in CFC_ATMOS
1497    o PTRACERS:
1498      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1499        that ALL experiments with ptracers enable can be checked. This makes
1500        GCHEM_MONITOR obsolete.
1501      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1502        monitorFreq
1503      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1504    o add PTRACERS (PTR0[1-5]) to testreport output
1505    o exf_check_range:
1506      * default changed to .TRUE.
1507      * will check values for niter0 if debLevA, every timestep if debLevB
1508      * STOP in exf_check_range if 'out of range'
1509      * range chosen generous to allow for potential extema
1510      TBD: a version with stricter range
1511           permitted range would be runtime parameters
1512    o GMredi:
1513      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1514      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1515      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1516    o GCHEM:
1517      - move call to GCHEM_FORCING_SEP, so that it is now called before
1518        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1519      - introduced a useGCHEM runtime flag and applied it everywhere.
1520      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1521        this flag is now only visible within GCHEM-pkg routines.
1522      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1523        be replaced by a 3D array that is computed before thermodynamics; for
1524        this, the tracer ID iTracer had to be included into the parameter list
1525        of ptracers_forcing
1526      - set up forward_step to call gchem_forcing, that will replace
1527        gchem_forcing_int in ptracers_forcing
1528      - cleaning up
1529    o small cleaning of exch2: remove files that are also in eesupp/src
1530    
1531    checkpoint56
1532    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1533    o mnc: cleanup "full" files--fixes out-of-memory problem
1534    o ECCO-GODAE
1535      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1536      * fully merged and updated from SIO code
1537        windstress sign change affects
1538        - exf_inscal_[u/v]stress
1539        - sign of xx_tau[u/v] adjustments
1540        - signs in cost_scat
1541      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1542      * natl_box_adjoint updated and compressed
1543      * 2-level checkpoint switch added
1544        (tested in EXP. 1 of natl_box_adjoint)
1545      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1546    o SVD
1547      * first complete, non-hacked version for SVD calculations
1548      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1549        performed via direct access files admtlm_vector.it????
1550        (via ctrl_[un]pack)
1551      * optimcycle is used for ARPACK iteration counter
1552        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1553      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1554        and add linear transforms where necessary
1555      * controls are initial/final SST, SSS (can be extended; need to check
1556        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1557    o mdsio: filename info to both stderr, stdout
1558    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1559      from sign change
1560    
1561    checkpoint55j_post
1562    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1563      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1564    o add consistent build directories and .cvsignore files to verification
1565    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1566    o make all subroutines 30 or less characters in length for certain older
1567      compilers to work (a thorough search only turns up two routines in
1568      pkg/ptracers)
1569    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1570      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1571    
1572    checkpoint55i_post
1573    o change arrays for total vertical diffusivity (2.D if explicit,
1574      3.D if implicit) ; each ptracer uses its own background value.
1575    o added mnc/NetCDF output capability to ocn_compon_interf
1576      - added bits to verification/cpl_aim+ocn so that it can run on
1577        ITRDA and other clusters without the mpirun "-wd" option
1578    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1579      configuration
1580    o give MNC the ability to create additional files rather than
1581      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1582      - the default is just less than 2GB which is a practical limit
1583        on many systems
1584    o Compute the non-local term using either KPP vertical diffusivity (=default)
1585       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1586    
1587    checkpoint55h_post
1588    o add verification test "vermix"
1589    o remove all the *_ioinc flags and replace with the single global
1590      outputTypesInclusive flag
1591    o allow to set a vertical profile of vertical diffusivity for T & S
1592    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1593    o useMNC moved from data.mnc to data.pkg
1594    
1595    checkpoint55g_post
1596    o Renaming carbon AD experiments to comply with testreport conventions
1597    o Updating adjoint of Held-Suarez hs94.1x64x5
1598    o Fixing directives for non-ECCO forward_step, after ECCO directives
1599      have been fixed to avoid recomp. of do_oceanic_phys
1600      Works well for global_ocean.90x40x15,
1601      but recomp. issue remains for carbon
1602    o Updating adjoint output for natl_box_adjoint after
1603      pkg/ecco has been modified (see taga c55d_post)
1604    
1605    checkpoint55f_post
1606    o rename to timeave_init_fixed
1607    
1608    checkpoint55e_post
1609    o some delicate re-shuffle of store directives to avoid one
1610      extra call of do_oceanic_physics
1611      affects ecco_the_main_loop.F, do_oceanic_physics.F
1612      checkpoint_lev1_directives.h
1613    o NB: this may break global_ocean adjoint temporarily,
1614      but it is clear how to fix it. Will do later, need this now.
1615    
1616    checkpoint55d_post
1617    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1618    o ecco_cost_weights is modified to 1x1 runs
1619    o modifs to allow observations to be read in as
1620      single file or yearly files
1621    o enable to read exf forcing fields as either
1622      single file or yearly files (flag useExfYearlyFields)
1623    checkpoint55d_pre
1624    
1625    o switch between 2-level and 3-level checkpointing
1626    o add ability of MNC to write local and "partial" (eg. 2D slices where
1627      the full 3D field is never actually stored) arrays to NetCDF files
1628      with the correct (that is, the complete multi-dimensional) set of
1629      array indicies
1630      - used in mom_vecinv() to write the diagFreq output
1631      - tested (demonstrated) in verification/aim.5l_cs
1632    o further mnc-ification
1633      - add verification/lab_sea to the list with mnc setups
1634      - fix undefined mnc v-names in cd_code
1635      - add kpp to mnc output (both snapshot and timeave)
1636    o non-hydrostatic code
1637      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1638        in calc_gw.F
1639      - defaults to viscAh
1640      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1641        friction or Leith) in non-hydrostatic mode, as long as there is
1642        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1643    o pkg/cost
1644      extend simple cost functions to treat time mean quantities
1645      (T,U,V) via cost_accumulate_state from cost_tile
1646    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1647        be 2 times larger than the minimum size the advection scheme requires.
1648        now get a perfect conservation of salt in advect_cs test-exp (updated)
1649    o GGL90 (Gaspar's TKE mixed layer)
1650      - add horizontal diffusion of TKE, requires exchanges in
1651        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1652        default. In OPA there is no horizontal diffusion of TKE but the
1653        mixing coefficients are computed from a horizontal average of TKE of
1654        6 points or so. I think that diffusion has a little more physical
1655        justification.
1656      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1657        was in vain)
1658      - mask tke-variable in ggl90_init
1659    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1660    o fix biharmonic diffusion on CS-grid.
1661    o more obcs stuff
1662      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1663        for reading boundary values. This routine is called from
1664        obcs_prescribe_read
1665      - updated obcs_check
1666      - changed sponge layer relaxation parameter units for days to seconds
1667      - turned off sponge layer by default
1668      - changed argument list of OBCS_CALC to myTime+deltaTclock
1669      - fixed about 35 bugs in obcs_external_fields_load
1670    
1671    checkpoint55c_post
1672    o obcs stuff
1673      - new runtime flags useOBCSprescribe, useOBCSbalance
1674      - re-arranged obcs_calc
1675      - moved exf_getobcs to obcs_prescibe_read
1676        obcs_prescibe_read is called after ORLANSKI stuff
1677        and independent of it (executable can contain all).
1678      - updated obcs_check
1679      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1680        These may be necessary only if tangential velocities are
1681        prescribed at OB, not sure, needs testing.
1682    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1683      which simplifies the calls and passes the ifc check-bounds test
1684    
1685    checkpoint55b_post
1686    o add a 2D scalar, Z location, exchange_2 routine.
1687    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1688      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1689      affects advect_cs results (for the wrong reason): update output.txt
1690    o use a more standard discretization for biharmonic viscosity ;
1691     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1692      affects results of dome set-up: update output.txt
1693    o fix gad_advection.F (CubedSphere part), back to version 1.23
1694    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1695    
1696    checkpoint55a_post
1697    o merged code to
1698      * prescribe/read time-dependent open boundaries
1699        (works in conjunction with exf, cal)
1700      * sponge layer code for open boundaries
1701      * each boundary N/S/E/W now has its own CPP option
1702        (healthy for the adjoint)
1703    
1704    checkpoint55
1705    o up-to-date adjoint of previous breaks
1706      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1707      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1708      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1709      - carbon: * remove tr1-related adjoint verification
1710                * add ptracer as control variable
1711    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1712      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1713    
1714    checkpoint54f_post
1715    o in verification/carbin/ remove experiment related to
1716      ALLOW_PASSIVE_TRACER (array tr1 etc)
1717      code_ad/ input_ad/ results_ad
1718    
1719    o add two new packages
1720      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1721        + subject to optimization (memory)
1722      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1723        + subject to reordering (many GOTOs in the original code)
1724        + so far opps is called for every (i,j) point, and then operates in
1725          the vertical; one may want to reorder the scheme in order operate in
1726          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1727          fields)
1728    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1729      - all verification tests compile and run with linux_ia32_g77
1730      - defaults are compatible with current input files--nothing
1731        should change if you were not previously using MNC
1732      - MNC output has been added in numerous places (eg. timeave)
1733        but there are still a few writes not yet do-able with MNC
1734        (this is in progress)
1735      - flags now allow for either/or/both use of MDSIO and MNC and
1736        documentation will soon follow
1737      - numerous small formatting cleanups for ProTeX
1738    o add version info (via BUILD_INFO.h) to MNC and stdout
1739    
1740    checkpoint54e_post
1741    o add two new packages
1742      - pp81 (Packanowski and Philander, 1981), Richardson number and
1743        stratification dependent mixing
1744      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1745      - these scheme operate in a similar manner as KPP (without ghat, of
1746        course), however there is only one diffusivity that is used for both
1747        temperature and salinity (and passive tracers)ç
1748    o add offline package
1749    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1750      provided by Stephanie Dutkiewicz
1751    o genmake2: add ability to search for C compilers and cleanup test output
1752      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1753    
1754    checkpoint54d_post
1755    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1756    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1757      leading to additional shift by 5 days each year of integration
1758       (i.e. leading to considerable offset over the years)
1759    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1760    o start with no AB and no initial filtering (staggerTimeStep):
1761      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1762    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1763      (external loading & cpl import/export stay in forward_step.F)
1764    o update coupling interface to work with new staggerTimeStep
1765    o change MDSIO ptracers_pickup.
1766    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1767    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1768    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1769    
1770    checkpoint54c_post
1771    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1772      this affects (truncation error) output.txt of test-exp:
1773       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1774    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1775    o change Qnet to always be the net heat flux, (+upward).
1776      affects (truncation error) output of natl_box exp.: updated
1777    o define the max number of passive tracers in PTRACERS_SIZE.h
1778    o start to test mnc routinely in exp0
1779    o add sea-ice loading (sIceLoad) as a new forcing field.
1780    
1781    checkpoint54b_post
1782    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1783       impressive on Altix and Opteron systems)
1784    o diagnostics can now write NetCDF files through the mnc package
1785    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1786    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1787    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1788      affects (truncation error) output of lab_sea & natl_box exp.: updated
1789    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1790    
1791    checkpoint54a_post
1792    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1793    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1794    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1795    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1796      + internal_wave (shift in writing cg2d_ini_res)
1797    checkpoint54a_pre
1798    
1799    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1800      - modified verification/lab_sea and natl_box_adjoint accordingly
1801    
1802    checkpoint54
1803    checkpoint53g_post
1804    o prepare splitting of thermodynamics: store convect.counter in common block
1805    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1806      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1807    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1808    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1809    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1810    o restore adjointability
1811    
1812    checkpoint53f_post
1813    o modifications that affect AIM experiment results (update output.txt):
1814      - no advection of S at top interface Nr (pkg/generic_advdiff)
1815      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1816    o AIM pkg:
1817      - include stability function into surf.Flux derivative relative to Tsurf
1818      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1819    
1820    checkpoint53e_post
1821    o merged cylindrical coord configuration
1822    o added rotating_tank experiment
1823    checkpoint53e_pre
1824    
1825    checkpoint53d_post
1826    o faulks upgraded: re-generate output.txt that have changed:
1827       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1828    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1829    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1830    o added Sadourny discretization of Coriolis
1831      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1832      - re-enabled use of omega3 (useAbsVorticity)
1833    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1834      vector-invariant equations
1835      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1836    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1837      hopefully without new bugs
1838      - still to do: biharmonic friction for non-hydrostatic w
1839    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1840    o regenerated output for global_ocean_ebm (using -ieee)
1841    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1842      of mom_common/
1843      - simple re-arrangement of instructions within computing loop
1844    checkpoint53d_pre
1845    
1846    checkpoint53c_post
1847    o new version of coupler for AIM+thSIce and Ocean models
1848     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1849     - land: change Evaporation of snow
1850     - aim with thSIce: fix bug in snow-precip.
1851    o changes to calc_gw.F
1852     - bug fix for w^2 term near the bottom boundary
1853     - (hopefully) improve the lateral slip boundary condtions for use with
1854        partial/looped cells
1855      - because the bug fix changes two verification experiments anyway (exp5
1856        and plume on slope), change the lateral boundary condition from half slip
1857        to the value of no_slip_sides
1858    o ebm package wasnt quite up to the parallel task. Fixed that.
1859    o Adjoint of EBM package + verification
1860      * TLM OK
1861      * ADM not sufficient accuracy yet (needs further testing)
1862    
1863    checkpoint53b_post
1864    o Commiting new energy balance model to repository
1865      * package is pkg/ebm
1866      * verif. is verification/global_ocean_ebm
1867      * references are in ebm_driver.F
1868    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1869    C        Global thermohaline circulation. Part I:
1870    C        Sensitivity to atmospheric moisture transport.
1871    C        J. Climate 12(1), 71-82
1872    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1873    C        Global thermohaline circulation. Part II:
1874    C        Sensitivity with interactive transport.
1875    C        J. Climate 12(1), 83-91
1876    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1877    C        Destabilization of the thermohaline circulation
1878    C        by atmospheric eddy transports.
1879    C        J. Climate 7(12), 1870-1882
1880    o Will need long integration testing.
1881    checkpoint53b_pre
1882    
1883    o created pkg/mom_common in preparation for variable viscosity code
1884    o renamed and split ini_mnc_io
1885    o pkg/land: only liquid water can diffuse or run-off
1886    o AIM using land: soil wetness availability account for snow
1887    o added printMapIncludesZeros to EEPARMS namelist
1888    
1889    checkpoint53a_post
1890    o restore TAMC compatiility for exf_constants.h
1891      (no usage of _d in .h)
1892    o Additional storing in KPP in an attempt to fix
1893      TAMC problem with adjoint of KPP code.
1894      (no success...)
1895      Identical code works fine with TAF.
1896    o Fixed verification/natl_box_adjoint experiments.
1897      Initial conditions for Experiments 4 and 5 are now
1898      set to "SEAICE_initialHEFF=0", which is more reasonable,
1899      and hence gives results closer to that of Experiment 2.
1900      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1901    
1902    checkpoint53
1903    o stable checkpoint with up to date adjoint
1904      TLM tests only run for 1st grdchk at the moment. Its unclear if
1905      this is a code problem or a problem with resetting code for g_
1906      variables that is being autogenerated wrong.
1907      Otherwise:
1908       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1909       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1910         are both still in chaos following their security messes.
1911    
1912    checkpoint52n_post
1913    o various build (mostly genmake2) changes including:
1914      - ability to build/run more easily within Cygwin and MacOS X
1915      - more complicated Makefiles with a stronger dependence on Gnu Make
1916    o pkg/seaice modifications
1917      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1918        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1919        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1920      - changed proxy for geostrophic velocity and updated
1921        verification/lab_sea/results/* accordingly
1922      - removed ADI dynamic solver from pkg/seaice
1923      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1924        they caused a segmentation fault under certain circumstances
1925      - removed unused field WATR
1926    o bug fix in exf-package:
1927      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1928         now reflect that.
1929    o small fixes in the cal-package:
1930      - set reference date to first of January for the 'model'-calendar
1931      - failing of cal_CheckDate in cal_FullDate now actually results in a
1932        warning
1933    o small modifications in exf-package to increase flexibility:
1934      - change climtempfreeze from a constant to a runtime parameter that
1935        is specified in data.exf_clim (default = -1.9)
1936      - introduce runtime parameter windstressmax (default = 2.0) that is
1937        specified in data.exf
1938    o fix in pkg/thsice:
1939      - update Evap (Tsf changes) to be consistent with Latent heat flux
1940      - maintain snow precipitation unchanged (even if Tsf >=0).
1941     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1942    
1943    checkpoint52m_post
1944    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1945      this does not change any of the results, because myIter=0 in swfrac always
1946      lead to jwtype=2 (the default anyway), but the call makes little sense
1947      as a default
1948    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1949    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1950      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1951    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1952    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1953    o extending useSingleCpuIO option to work with new exch2 I/O format
1954      - old-style, missing-tile I/O is still accessible by defining CPP
1955        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1956    o monitor package can write to NetCDF files and/or STDOUT
1957    o fix re-definition bug in MNC_GRID_INIT_ALL()
1958    o doc/api_reference added
1959      - a framework for building an API Reference Manual using all
1960        the "protex" comments embedded in the code
1961      - see pkg/generic_advdiff, pkg/mnc for examples
1962    o MNC:
1963      - make myThid the last argument for all subroutines
1964      - new default for the grid files: NO halos
1965      - add useMNC and other run-time flags
1966      - separate per-file-group handling of the unlimited dimension
1967      - early initialization of MNC w/ flags read at the eeboot stage
1968        and lookup tables set in initialize_fixed
1969      - write all MNC output to a freshly-created directory
1970    o thermodynamics sea-ice (thsice) is now tested with testreport.
1971    o test exp. advect_cs: use the standard cs32 grid ; update output.
1972    o Added functionality to grdchk:
1973      pick global i,j,k position (or nearest wet) where to perform check.
1974    
1975    checkpoint52l_post
1976    o new land formulation:
1977      a) use ground enthalpy as prognostic variable to ensure exact
1978         energy conservation.
1979      b) account for water temperature and for latent heat of freezing
1980         in all processes (rain, run-off, ground storage)
1981      c) compute surface and ground temperature implicitly.
1982    o aim_v23 modification for new land model:
1983      a) Treat separately land / ocean / sea-ice surface fluxes
1984         to allow implicit computation of land & sea-ice surface temp.
1985      b) add snow precipitation.
1986    checkpoint52l_pre
1987    
1988    o fix problem (when 1 tile is empty) in min/max monitor.
1989    o fix bug in timeAve (u,vZetatave in common block)
1990    o no restoring terms under ice for pkg/seaice
1991    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1992    o bug fix for pkg/seaice pickups
1993    o change MNC call locations and add coordinate attributes
1994    o mask vorticity at the corner ; affects global_ocean.cs output
1995    o fix ini_curvilinear_grid ; test CS experiments with mpi
1996    o aim.5l_cs: modify sea-ice fraction input file ; update output
1997    o exf: Adding simple range check routine for exf fields after read
1998    
1999    checkpoint52k_post
2000    o removed top-level directory "diags"
2001      - we migrated these functions to pkg/timeave a long time ago
2002    o fixed bug introduced in pkg/monitor
2003    o accuracy ctrlprec = 32 insuffient for gradient checks using
2004      averaged fields (I/O via cost_averages)
2005      -> use ctrl.h in active_file*.F to control I/O precision.
2006    o paramter list of CALL ADTHE_MAIN_LOOP
2007    o added initial do_the_model_io to ecco
2008    o set all ...Freq to zero after cost_final
2009      taveFreq, dumpFreq, pChkptFreq
2010    o MAIN and ECCO differentiability restored
2011    
2012    checkpoint52j_post
2013    o fix nchklev in tamc.h for global_ocean...
2014    o Bringing flow and store directives up-to-date
2015    o Really weird thing!
2016      call do_the_model_io from the_main_loop with parameters
2017      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2018      TAF places a faulty re-call of initialise_varia
2019      after cost_final call which should not be there!
2020    checkpoint52j_pre
2021    
2022    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2023      error messages
2024    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2025    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2026      debug output
2027    o modfied mdsio_writefield.F to handle non-global files under exch2
2028    o update AIM Cubed-Sphere exp (aim.5l_cs):
2029      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2030    o update AIM Equatorial Channel exp:
2031      use standard aim_v23 pkg and change the SST fields to be more realistic.
2032    o globalFile now works with exch2
2033    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2034      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2035    o limit timeave output for hi-res integrations
2036    
2037    checkpoint52i_post
2038    o removed CPP_EEOPTIONS.h from verification/*/code
2039    o updated the tiling for global_ocean_pressure
2040    checkpoint52i_pre
2041    
2042    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2043      the old pkg/aim).
2044    
2045    checkpoint52h_pre
2046    o shortened offending lines in exch2_send_rx?.template
2047    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2048    o genmake2: add build & execute test for NetCDF code
2049    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2050      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2051    o added useSingleCPUIO flag to monitor.F and mon_out.F
2052    o added temporary hack for sea-ice dynamics on the cube:
2053      metric terms are ignored and it is assumed that
2054      there is no sea-ice on cube faces 1, 2, 4, and 5.
2055    
2056    checkpoint52f_post
2057    o added exch2 cube routines to pkg/exch2
2058    o modified hs94.cs-32x32x5 to use it
2059    o added new grid files to hs94.cs-32x32x5
2060    checkpoint52f_pre
2061    
2062    checkpoint52e_post
2063    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2064      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2065    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2066      to work with implicit vertical advection and AB ;
2067    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2068    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2069     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2070    checkpoint52e_pre
2071    
2072    o fix bug in impldiff when Nr=1 or Nr=2.
2073    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2074    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2075    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2076      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2077    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2078    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2079    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2080    
2081    checkpoint52d_post
2082    o re-tiled many expts to allow comparison in multi-processor mode
2083      - updated output accordingly
2084      - changed hs94.128x64x5 to use intial T from file rather than use the
2085        random number generator
2086    o add infrastructure in model routines for fizhi and gridalt packages
2087    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2088    o changes to permit hi-res, cubed-sphere, configuration
2089      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2090      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2091      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2092        of surface winds for the cube
2093      (A verification experiment, based on global_ocean.cs32x15, but with
2094       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2095       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2096       complete with example surface forcing files and matlab scripts to look
2097       at the output and compare it with that of global_ocean.cs32x15.)
2098    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2099       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2100       to conform to the common rule.
2101    o check-in the first version of the coupler + interfaces for multi-components
2102       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2103       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2104       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2105       - ocean and atmos. share the same horizontal grid (no interpolation).
2106       - exchanges between component and coupler is done in forward_step
2107    o new verification experiment, cpl_aim+ocn:
2108       coupled ocean - AIM atmosphere on cs32 grid.
2109    
2110    checkpoint52d_pre
2111    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2112    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2113    
2114    checkpoint52c_post
2115    o Fixing OPTIONS files for use of exf:
2116      - ALLOW_ECCO not needed
2117      - ECCO_CPPOPTIONS.h should not be included from
2118        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2119        as has been the case in the past
2120      - All cal/exf related options are currently set in
2121        single header file. Should remain so until we
2122        agree on a consistent new policy.
2123    o Removed all CPP options for cal package.
2124      cal has no more CPP options.
2125    o modified STOREs in GAD_ADVECTION
2126    o corrected key comp. for passkey
2127    
2128    checkpoint52b_post
2129    o new version: "thsice" of thermodynamic sea-ice pkg:
2130     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2131     - modify fluxes but do not change theta directly;
2132     - light cleaning of bulk_force pkg (still needed with thsice).
2133     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2134       + output_thsice.txt to test thsice & bulk_force pkgs.
2135    o put back grid & coriolis monitor output.
2136    checkpoint52b_pre
2137    
2138    o call "do_the_model_io" at the beginning (=> dump initial state)
2139    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2140    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2141      (need info on NUMBER_OF_PTRACERS)
2142    o missing PTRACERS headers in some routines
2143    o default tamc.h in pkg/autodiff supposed to crash
2144      to ensure proper customization
2145    
2146    checkpoint52a_post
2147    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2148      - moved surfaceTendencyTice from pkg/seaice to main code
2149      - subroutine FREEZE_SURFACE now limits only surface temperature
2150        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2151        => new output.txt for global_ocean.cs32x15 & global_with_exf
2152      - keep the old version of FREEZE for backward compatibility;
2153        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2154      - corresponding modifs for TAF directives
2155    o added surface flux output variables to TIMEAVE_STATVARS
2156    o time-averaged output for pkg/ptracers
2157    o fix problem with ECCO-related divided adjoint
2158      snapshot file was missing some ad-variables,
2159      but no warning issued by TAF
2160    
2161    checkpoint52a_pre
2162    o some bug fixes for #undef REAL4_IS_SLOW
2163    
2164    checkpoint52 = ecco_c52_e35
2165    o after testing adjoints of checkpoint51u_post
2166    
2167    checkpoint51u_post
2168    o this is the post-merge tag of the ecco-branch
2169      (needs another clean checkout and re-testing)
2170    o various natl_box_adjoint configs and results
2171      but no input fields
2172    o obcs adjoint not yet merged!
2173    o adding ECCO global 1x1 and 2x2 degree configs
2174    o updated/extended some store directives for seaice
2175    o pkg/ecco now containes ecco-specific part of cost function
2176    o top level routines the_main_loop, forward_step
2177      supersede those in model/src/
2178      previous input data.cost now in data.ecco
2179      (new namelist ecco_cost_nml)
2180    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2181    
2182    checkpoint51t_post
2183    o this is the pre-merge tag of the ecco-branch
2184    
2185    checkpoint51s_post
2186    o cleanup: removed various obsolete #define-s
2187    o pkg/grdchk
2188      - renamed 'ph-grd 3' to 'grad-res'
2189      - merged from ecco-branch
2190        (remaining bug fixes for obcs gradient checks)
2191      - additional high-precision output for testreport
2192        (grep for 'precision_grdchk_result')
2193    
2194    checkpoint51r_post
2195    o cleaned up or removed CPP_OPTIONS.h files
2196    o updated results for some of the tests to reflect the new
2197      optfiles (-ieee: -O0 instead of -O3)
2198    
2199    checkpoint51q_post
2200    o cd_code:
2201      - moved cd_scheme.F -> cd_code_scheme.F
2202      - separate read_checkpoint from cd_code_ini_vars.F
2203      - separated cd_code part from write_checkpoint
2204      - updated AD_SOURCE, generated .flow
2205      - added CD_CODE_VARS.h to the_main_loop
2206      - Moving cd_code specific store dir.s to pkg/cd_code
2207    o ctrl package totally restructured
2208      - pack/unpack now optional and decoupled from
2209        xx_/adxx_ I/O
2210      - ctrl_pack/unpack cleaned
2211        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2212      - confined inclusion of AD_CONFIG.h to where necessary.
2213    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2214    
2215    checkpoint51p_post
2216    o create initial cd_code package
2217      - WARNING: the initialization of fields within packages
2218        is broken because INI_FIELDS (where READ_CHECKPOINT is
2219        called) is called *before* PACKAGES_INIT_VARIABLES.
2220        This seems to be backwards since
2221        1) its important to initially zero the entire field including
2222           the "halo" region
2223        2) zeroing needs to be done *before* reading pickup info
2224           and the pickup call might or might not happen in any
2225           particular run
2226      - this needs an overhaul for R2
2227    o cleanup verification/*/code/GMREDI_OPTIONS.h
2228    o cleanup testreport
2229    
2230    checkpoint51o_post
2231    o bringing AD-related verif's up to date with genmake2
2232      - carbon/
2233      - global_ocean.90x40x15/
2234      - hs.94.1x64x5/
2235      - (front_relax/ )
2236    o (more) consistent directory structure for AD-related verif.'s
2237    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2238    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2239    o bug fix in find_alpha.F for MDJWF:
2240      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2241        change rho -> rho-rhoConst
2242      - replace call find_rho to find_rhonum
2243    o initialisation of rFlx extended to full array (required by TAF)
2244      and shifted to thermodynamics
2245    o removed PTRACERS.h in ptracers routine
2246    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2247    o Correcting initialisations for fVerU, fVerV.
2248    o helping TAF to recognize dependency on kUp for
2249      fVerU, fVerV
2250    o Replacing delZ by delR in pkg/ctrl/
2251    checkpoint51o_pre
2252    
2253    o undid all of cp51 pending some cleanups and discussion
2254    o added the [#include "AD_CONFIG.h"] statement to all files that need
2255       it for adjoint/tl #defines
2256     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2257     o removed tools/genmake since it no longer works
2258    
2259    checkpoint51n_post
2260    o modifications to make FREEZE flux visible to pkg/kpp
2261      - moved surfaceTendencyTice from pkg/seaice to main code
2262      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2263      - subroutine FREEZE now limits only surface temperature
2264        (this means new output.txt for global_ocean.90x40x15,
2265         global_ocean.cs32x15, and global_with_exf)
2266    o added surface flux output variables to TIMEAVE_STATVARS
2267    
2268    checkpoint51n_pre
2269    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2270    o added [#include "AD_CONFIG.h"] to all files that use the following
2271      defines:
2272      - ALLOW_ADJOINT_RUN
2273      - ALLOW_TANGENTLINEAR_RUN
2274      - ALLOW_ECCO_OPTIMIZATION
2275    
2276    checkpoint51m_post
2277    o incorporating changes to get TAMC/TAF working in genmake2
2278      - added new TAMC/TAF targets to the Makefile
2279      - various cleanups related to package handling
2280      - these changes should have no impact on the forward model
2281    
2282    checkpoint51l_post
2283    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2284     - faster algorithm for cal_addtime.F
2285     - higher precision arithmetic, where needed
2286     - pkg/exf *startdate variables changed from calendar date to
2287       model integration time
2288    
2289    checkpoint51l_pre
2290    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2291    o enable to apply restoring on S & T only in a latitude band.
2292    o update output (external_forcing_surf modif. change truncation errors)
2293       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2294    
2295    checkpoint51k_post
2296    o change default to: useNHMTerms=.FALSE.
2297     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2298       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2299     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2300        exp1, ideal_2D_oce
2301     - change data file of oceanic exp (leave the results unchanged for now)
2302       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2303    o set gravitySign automatically according to the vertical coordinate used
2304      (and change sign: back to "logical" value: +1 when R increases downward)
2305    o added an include barrier to the default CPP_OPTIONS.h and
2306      removed the #include "PACKAGES_CONFIG.h" from it
2307    o fix a bug in mom_fluxform (from chk51j_post)
2308    
2309    checkpoint51j_post
2310    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2311    o adjusted some flow directives (dynamics, thermodynamics)
2312    o added cubed-sphere case to test cost function
2313    o heckpoint_lev?_directives.h now include
2314      pkg-specific directives, whenever those are enabled.
2315    o Moving pkg-specific flow directives to corresponding pkg
2316      Moving pkg-specific differentiation list to corresponding pkg
2317      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2318      ---> conventions are
2319           - pkg_ad.flow
2320           - pkg_ad_diff.list
2321           - pkg_ad_check_lev?_dir.h
2322    
2323    checkpoint51i_post
2324    o merge of the branch-genmake2
2325      - knowingly breaks the older genmake
2326      - automatic generation of all ALLOW_${PKG_NAME} defines
2327      - new testreport supersedes older testscript
2328    o large number of package inclusion and header cleanups
2329    checkpoint51i_pre
2330    
2331    o new output for adjoin of global ocean vector invariant
2332    o fix for checkpoint of thermodynamic seaice and bulk_force
2333    o Steph gchem various cleanups
2334    
2335    checkpoint 51h_pre
2336    o fixed some single quotes
2337    o modify gchem pkg to be more versatile
2338    o modifications to clean up dic pkg
2339    o add pkg/cfc
2340    
2341    checkpoint51g_post
2342    o provide links for ARPACK and ADM*TLM
2343    o start removing verification/vero/
2344    o update AD-related stuff
2345      (in particular some IF-statements in model/src/ routines)
2346    o adding to verification/global_ocean.90x40x15/ adjoint of
2347      vector invariant setup
2348    
2349    checkpoint51f_post
2350    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2351    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2352      of tracer Green's fucntions for ocean inversion project.
2353    
2354    checkpoint51f_pre
2355    o Added on-the-fly spatial interpolation capability
2356        "USE_EXF_INTERPOLATION" to pkg/exf.
2357      - This is a temporary Cartesian-grid hack until
2358        the super-duper ESMF coupler becomes available.
2359      - See verification/global_with_exf/README for usage example.
2360      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2361        flags and modified pkg/seaice accordingly.
2362    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2363        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2364        non-local transport term.
2365    
2366    checkpoint51e_post
2367    o pkg/mom_vecinv:
2368      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2369      - add time-ave diagnostic of vorticity advection.
2370    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2371    o atmospheric geopotential: - include water vapor effect;
2372                                - use p^kappa in p* scaling.
2373    o land pkg: read initial state from files.
2374    o AIM : add stratospheric drag in the upper level
2375    
2376    checkpoint51d_post
2377    o change function ILNBLNK (=> last non-blank char.) to return zero
2378      (instead of the string length) when the string. char is empty
2379    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2380    o modif's to restore TAMC compatibility
2381      - avoid "_d" constructs in PARAMETER declarations
2382      - avoid interrupting lines by comment lines
2383    o Use cluster local disks for purely local I/O
2384      vs. globally visible disks needed for ctrl stuff
2385      (merged from ecco-branch)
2386      - new active_file_loc... and mdsio_..._loc routines
2387      - affected packages: autodiff, ctrl, grdchk, mdsio
2388    
2389    checkpoint51c_post
2390    o introducing integer flag debugLevel
2391      - debLevZero: suppress all output
2392      - debLevA: standard
2393      - debLevB: equivalent to current debugMode=.TRUE.
2394    o introducing pathname variable mdsioLocalDir for mdsio
2395      that can be specified at runtime
2396      (relevant for cluster I/O to local disk)
2397    `
2398    >>>checkpoint51b_post
2399    adjoint of ptracers
2400    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2401    o extended state in checkpoint_lev?, etc.
2402    o alternative ctrl/cost with tr1 or ptracer
2403    o new comlev1_bibj_ptracers
2404    o new ptracers.flow
2405    o made ptracers_forcing same as external_forcing_s
2406    o added verification for adjoint with ptracers
2407      - adm. grdchk fail so far
2408      - tlm. grdchk OK
2409      - checked tapelev/comlev recomputations: OK
2410    <<<checkpoint51b_pre
2411    
2412    checkpoint51a_post
2413    o added code for biogeochemistry package
2414      - new pkgs: dic, gchem
2415      - new subroutine in ptracers
2416    o modify code for biogeo packages
2417      - in model/src and pkg/ptracers
2418    
2419    checkpoint51
2420    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2421      - autodiff, ctrl, exf, grdchk, seaice
2422      kept separate packages
2423      - cost, ecco, obcs
2424    o updating verification/internal_wave, verification/lab_sea
2425      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2426    
2427    checkpoint50i_post
2428    o Preparing next differentiable checkpoint and sync
2429      of MAIN vs. ecco-branch
2430      - 1st step: this one is differentiable
2431      - 2nd step: next(! not this) checkpoint will have updated packages
2432                  from ecco-branch)
2433    
2434    checkpoint50h_post
2435    o new package "land": provide surface BC for AIM.
2436    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2437    o AIM: use true log-P extrapolation for near surface temp (= as in
2438        F.Molteni paper) ; update aim.5l_cs output.
2439    o New variable in PARM03 for more flexible pickups
2440    o somewhat cleaned package initialisation sequence for
2441      ctrl/ cost/ ecco/ in packages_... routines
2442    
2443    checkpoint50g_post
2444    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2445      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2446      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2447        made the default because of faster convergence than ADI
2448    
2449    checkpoint50f_post
2450    o exf totally restructured
2451      - replaced all exf_set_ routines by one generic exf_set_gen.F
2452        and made sure it's still differentiable
2453      - split exf_getffields.F into new exf_bulkformulae.F
2454      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2455      - updated adjoint/makefile and relevant verif. accordingly
2456    
2457    checkpoint50f_pre
2458     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2459          + change Evap over land. (update aim.5l_cs output)
2460     o added missing .cvsignores and made uniform across expts
2461     o changed configuration of tidal_basin_2d expt
2462     o added pkg/debug functions for tracing code in fatal crashes
2463     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2464     o new fn in pkg/monitor to stop model if solution grows too big
2465     o removed lots of single quotes from comments
2466    
2467    checkpoint50e_post
2468    o make KPP work with PTRACERS
2469     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2470       nearly a copy of kpp_transport_s
2471     - there is no analogue to SurfaceTendencyS, so I have to use
2472       gPtr(of the surface layer) instead
2473    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2474    checkpoint50e_pre
2475    
2476    checkpoint50d_post
2477    o change kpp output from multiple-record state files to single-record state
2478      files analogous to write_state.F
2479    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2480      analogous to the cg2d-related output.
2481    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2482      so that writing to internal file fn (with length 512) fails.
2483    checkpoint50d_pre
2484    
2485    checkpoint50c_post
2486    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2487    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2488    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2489    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2490    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2491    
2492    checkpoint50c_pre
2493    Merging from release1_p13:
2494    o bug fix for pkg/seaice dynamic solver
2495    o Added SEAICE_initialHEFF to pkg/seaice
2496    
2497    checkpoint50b_post
2498    o store u*,v* in gU,V instead of in guNm1,gvNm1
2499    o in order to put the momForcing out of the Adams-Bashforth:
2500      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2501      to timestep.F
2502    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2503    o re-generate output for highly sensitive test-exp:
2504       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2505    
2506    checkpoint50b_pre
2507    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2508    o corrected CPP option mismatch in exf_Bulk... functions for case
2509      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2510    
2511    checkpoint50a_post
2512    o Bug fix for merging between c50 and KPP.
2513      ikey was passed from thermodynamics to kpp_calc via
2514      common block rather than being recomputed in kpp_calc,
2515      in contradiction with new key itdkey.
2516      New key ikppkey created, and tamc.h headers updated.
2517    
2518    checkpoint50
2519    - 2nd step of merge with ecco-branch:
2520      merge changes in ecco-branch back into main trunk
2521    - bug fix in find_alpha
2522    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2523    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2524    - merged some sliced AD support routines
2525    
2526    checkpoint49
2527    merged from ecco-branch:
2528    o exf:
2529      - Enable initialisation of forcing fields to constant
2530        (runtime) values.
2531      - in exf_getffields.F
2532        Reduce i-/j-loop to interior domain, discarding overlaps.
2533        That also fixes wrong TAF-key computations for key_1, key_2
2534        with bulf formulae.
2535      - exf_init.F modify #ifdef for exf_init_evap
2536      - exf_getffieldrec.F, ctrl_getrec.F
2537        The following INT-usages are not safe:
2538          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2539          fldcount = int(fldsecs/fldperiod) + 1
2540        and were modified.
2541    o autodiff: checkpoint_lev...
2542      - updated storing for bulk formulae (some arrays were missing)
2543      - added state for seaice package
2544      - synchronized with main branch
2545    o DIVA:
2546      Modif.s in
2547      - the_main_loop.F
2548      - the_model_main.F
2549      and added cost_final_restore.F cost_final_store.F
2550      o With these changes, it is possible to fully separate
2551        the first forward run to compute the cost function (mdthe_main_loop)
2552        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2553        into separate model executions.
2554        This enables better tuning of DIVA to given queue sizes.
2555      o Loss of cost function value in consecutive DIVA runs is
2556        fixed by storing to 'costfinal' file.
2557      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2558        beginning/end of adjoint integration is accounted for.
2559      The current changes apply to TAF-1.4.26.
2560      TAF has one remaining bug, requiring one manual change
2561      (see MITgcm manual).
2562    o cal: synchronized between MAIN and ecco-branch
2563    
2564    checkpoint48i_post
2565    o Changes to restore differentiability of code w.r.t. previous tag
2566      (mostly adding new routines to make list and replacing
2567      pressure by totPhiHyd).
2568    o Updated and merged grdchk package
2569      - has both ADM and TLM checks
2570      - works for single- and multi-proc.
2571      - output cleaned
2572      - worked successfully for parallel DIVA
2573    o genmake:
2574      - Adding -platform=SP4
2575      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2576    o Modif. for DIVA:
2577      ctrl_unpack should not be called in intermediate DIVA interval.
2578      (similar thing would apply for active files such as
2579      tbar, sbar, psbar, which should not be reinitialised;
2580      only relevant for ecco-branch)
2581    
2582    checkpoint48h_post
2583    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2584    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2585    o Added SEAICE_initialHEFF to pkg/seaice
2586    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2587    
2588    checkpoint48g_post
2589    --- EOS:
2590    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2591      store total Potential in totPhyHyd for diagnostics & EOS.
2592    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2593    --- Pressure/geopotential gradient:
2594    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2595    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2596      ( changes results of global_ocean_pressure )
2597    o NLFS + z-coord.: add eta*Rho' contribution.
2598    o accurate phiHyd when using interface-W at the middle between 2 centers
2599     ( changes results of ideal_2D_oce )
2600    o includes r* 2nd term in potential gradient.
2601    
2602    checkpoint48f_post
2603    Merging from release1_p12:
2604    o Modifications for using pkg/exf with pkg/seaice
2605      - improved description of the various forcing configurations
2606      - added basic radiation bulk formulae to pkg/exf
2607      - units/sign fix for evap computation in exf_getffields.F
2608      - updated verification/global_with_exf/results/output.txt
2609    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2610      (SBO) core products, including oceanic mass, center-of-mass,
2611      angular, and bottom pressure (see pkg/sbo/README.sbo).
2612    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2613      to avoid negative values in shallow regions.
2614      - updated verification/natl_box/results/output.txt
2615      - updated verification/lab_sea/results/output.txt
2616    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2617    o Added useSingleCpuIO option (see PARAMS.h).
2618    o Updated useSingleCpuIO option in mdsio_writefield.F to
2619      work with multi-field files, e.g., for single-file pickup.
2620    o pkg/seaice:
2621      - bug fix in growth.F: QNET for no shortwave case
2622      - added HeffFile for specifying initial sea-ice thickness
2623      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2624    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2625      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2626    o pkg/seaice:
2627      - adjoint-friendly modifications
2628      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2629    
2630    checkpoint48e_post
2631    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2632    o dynamics: change definition of computational domain & adapt mom_fluxform
2633      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2634    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2635        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2636        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2637        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2638        inverted_barometer solid-body.cs-32x32x1
2639      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2640    
2641    checkpoint48d_post
2642    o in preparation for r*:
2643     a) use pre-computed gradient of hydrostatic potential:
2644        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2645     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2646        => affects results of glob_oce_pressure (different truncation error)  
2647      update output.txt of ideal_2D_oce & global_ocean_pressure
2648    
2649    checkpoint48d_pre
2650    o in preparation for r*:
2651      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2652      pass the 2 comp. of the grad. as arguments to momentum S/R.
2653      but for the moment, only used if it does not change the results.
2654    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2655    
2656    checkpoint48c_post
2657    Modifications in treatment of initial flux forcing controls
2658    to avoid extra storing of flux fields.
2659    
2660    checkpoint48c_pre
2661    o Added tidal_basin_2d experiment (currently 1D!)
2662    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2663    
2664    checkpoint48b_post
2665    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2666     (modification to pressure gradient not yet implemented)
2667    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2668      (for U & V) that are used for vertical advection of momentum.
2669    
2670    checkpoint48a_post
2671    o In preparation for r*, use temp. array to compute vertical transport
2672       in flux-form momentum pkg. => change results of few test-exp.
2673      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2674                        lab_sea, natl_box & plume_on_slope
2675    
2676    checkpoint48
2677    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2678    
2679    checkpoint47j_post
2680    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2681    o moved adexch from forward_step to addummy_in_stepping
2682    o added exch in ctrl_map_...
2683    o aveFreq.=0. at end of cost_final to avoid overwrite in
2684      reverse checkpointing loop
2685    o Yet more changes in gmredi:
2686      * adgmredi_calc_tensor
2687        avoiding all recomputation of gmredi_slope_limit
2688      * adgmredi_x/y/rtransport
2689        added flag for excessive storing to avoid recomp. of
2690        u/v/rtans, dTdx/y/z
2691        -> this is not really necessary and very memory-consuming
2692      * adgmredi_slope_psi:
2693        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2694      * gmredi_slope_limit
2695        re-activated full calculation of taperfct for case 'ac02'
2696    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2697    
2698    checkpoint47i_post
2699    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2700    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2701      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2702    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2703    o gmredi: fix few bugs.
2704    
2705    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2706    This will be a good checkpoint to plug into the ecco-branch.
2707    o few modif.'s to get latest version adjointed
2708      (mainly kick out code in ini_linear_phisurf)
2709    o modif's to run adjoint with exactConserv
2710    o case GM_BOLUS_ADVEC should be cleaned
2711      S/R gmredi_slope_psi should be cleaned
2712    o verification/carbon now has exactConserv=.TRUE.
2713    
2714    checkpoint47g_post
2715    o time-average AIM output: becomes independent from statvars time-average
2716      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2717    o After TAF bug fix:
2718      Tested adjoint of gmredi package.
2719      Tests were done with checkpoint47 rather than with latest
2720      checkpoint47f_post since the latter is broken for the adjoint
2721      verification/carbon/ contains both ADM and TLM gradient checks.
2722    Here they are, before they get changed/lost/stolen.
2723    Mostly modif.'s to fix numerical sensitivities.
2724    Gradient checks OK for
2725    - GM_taper_scheme:
2726      * clipping
2727      * ac02
2728      * linear
2729      * glw91
2730      * dm95
2731      * ldd97
2732    - GMREDI_OPTIONS:
2733      * GM_VISBECK_VARIABLE_K
2734      * GM_NON_UNITY_DIAGONAL
2735      * GM_EXTRA_DIAGONAL
2736      * GM_BOLUS_ADVEC
2737    in conjunction with data.gmredi parameters to be checked in
2738    in a few minutes under verification/carbon/code/
2739    
2740    checkpoint47f_post
2741    Merging from release1_p10:
2742    o modifications for using pkg/exf with pkg/seaice
2743      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2744        and SEAICE_EXTERNAL_FLUXES
2745      - pkg/exf CPP options EXF_READ_EVAP and
2746        EXF_NO_BULK_COMPUTATIONS
2747      - usage examples are Experiments 8 and 9 in
2748        verification/lab_sea/README
2749      - verification/lab_sea default experiment now uses
2750        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2751    
2752    checkpoint47e_post
2753    o created a tag prior to creating a branch
2754    
2755    checkpoint47d_post
2756    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2757      at the bottom boundary had an erroneous half slip boundary condition
2758    o added bottom drag and no slip boundary condition capabilities to
2759      oceanic pressure coordinates code
2760    o added new verification experiment global_ocean_pressure, this experiment is
2761      also described in the tutorial section of the manual
2762    checkpoint47d_pre
2763    
2764    checkpoint47c_post
2765    o Added a verification experiment for a global cubed-sphere ocean run
2766      -  verification/global_ocean.cubed32x32x30
2767      -  uses pkg/therm_seaice and pkg/bulk_forcing
2768    
2769    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2770    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2771      when using P-coordinate; only implemented for atmospheric config.
2772    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2773      NOTES: requires option NONLIN_FRSURF to be "#define".
2774    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2775    
2776    checkpoint47b_post
2777    Merging from release1_p9:
2778    o pkg/seaice
2779      - removed GOTO's and added taf directives
2780      - double precision constants to reduce the g77 (Linux)
2781        to F77 (SGI) differences reported in release1_p8
2782    o tools/genmake
2783      - added SGI options
2784    o verification/testscript
2785      - updated to that of checkpoint47a_post
2786    o verification/global_ocean.90x40x15/input/eedata
2787      - modified for SGI f77 compatibility
2788    o verification/lab_sea
2789      - added description of sea-ice model
2790      - added missing matlab routines
2791      - added test of thermodynamics parallelization
2792    
2793    checkpoint47a_post
2794    o new pkg: aim_v23
2795     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2796       for now, keep the same surface forcing as before.
2797     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2798     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2799     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2800    o add diagnostic of surface correction term in monitor output
2801    
2802    o bulk_force and therm_seaice
2803    - Two packages:  bulk_force (Bulk forcing)
2804      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2805    - Earlier integration from Stephaine Dutkiewicz
2806      and Patrick Heimbach.
2807    - Two ifdef statements for compile time,
2808       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2809    
2810    checkpoint47
2811    differentiable version of checkpoint46n_post
2812    o bug fix in quasihydrostaticterms
2813    o * "clean" adjoint code (in terms of extensive recomputations)
2814        can now be obtained for all GMREDI options (i.e. for
2815        - GM_VISBECK_VARIABLE_K
2816        - GM_NON_UNITY_DIAGONAL
2817        - GM_EXTRA_DIAGONAL
2818        - GM_BOLUS_ADVEC )
2819      * However, wrong gradient check problem remains unsolved.
2820      * New CPP options have been introduced for different
2821        tapering schemes
2822    o external_fields_load now part of differentiation list
2823    o pressure needs multiple storing;
2824      would be nice to have store_pressure at beginning or
2825      end of forward_step, e.g. by having phiHyd global (5-dim.)
2826      (NB: pressure is needed for certain cases in find_rho,
2827      which is also invoked through convective_adjustment).
2828    o recomputations in find_rho for cases
2829     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2830    o #define ATMOSPHERIC_LOADING should be differentiable
2831    o ini_forcing shifted to begining of initialise_varia
2832    o Incorporating QNVS line search routines into MITgcm
2833      (this is separate code, and therefore not under pkg)
2834      lsopt/, optim/
2835    o Updated verification/carbon/
2836      - #define GM_VISBECK_VARIABLE_K
2837      - GM_taper_scheme    = 'ldd97'    
2838    
2839    checkpoint46n_post
2840    Merging from release1_p8:
2841    o verification/natl_box:
2842      updating new external_fields_load routine
2843    o New package: pkg/seaice
2844      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2845      The sea-ice code is based on Hibler (1979-1980).
2846      Two sea-ice dynamic solvers, ADI and LSR, are included.
2847      In addition to computing prognostic sea-ice variables and diagnosing
2848      the forcing/external data fields that drive the ocean model,
2849      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2850      The implied surface heat flux is then stored in variable
2851      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2852      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2853      non-local transport term.  Because this call precedes model
2854      thermodynamics, temperature under sea-ice may not be "exactly" at
2855      the freezing point by the time theta is dumped or time-averaged.
2856      N.B.: fairly large differences in accuracy occur across
2857            different platforms/compilers; comparison between
2858            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2859            generated output gives:
2860       T           S           U           V
2861      C D M    c        m  s        m  s        m  s        m  s
2862      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2863      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2864      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2865    
2866      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2867    o GAD:
2868      - generated new common blocks to account for call of
2869        same gad routines with differing traceridentities
2870        (needed to modify tracerIdentity indices in GAD.h)
2871      - generated separate common blocks for case useCubedSphereExchange
2872        (Department of Futurology)
2873      - parameter lists to gmredi_?transport: added tracerIdentity
2874      - added new key indices to tamc.h
2875    o external_fields_load:
2876      - added this routine to TAF list
2877      - needed to make some common blocks global and additional storing
2878        along the same lines as exf package (checkpoint_lev?_directives.h)
2879    o exf:
2880      updated external forcing package
2881      - bug fixes carried over from ecco-branch
2882        (missing OBCS_OPTIONS.h in two routines)
2883      - enable easy to use "no forcing".
2884      - added exf I/O for atmospheric loading
2885      - added exf I/O for runoff data
2886      - transfered scaling between exf <-> MITgcm to exf namelist
2887    o Adding new verification experiment global_with_exf.
2888      This verification experiment is almost identical to the
2889      global_ocean.90x40x15 experiment, except that it uses
2890      the exf (and cal) package instead of the
2891      external_fields_load routine (cf README file).
2892    
2893    checkpoint46m_post
2894    o modified testscript to return -- when there are no lines of "%MON" output
2895    o added new flag "quasiHydrostatic" for QH mode
2896      and new routine quasihydrostaticterms()
2897    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2898      New routine: mom_u_coriolis_nh()
2899    o fixed sign of non-hydrostatic metric terms in u and v equations.
2900      Depend on correct sign of gravitySign.
2901    o added work.pc* to .cvsignore in aim directories using ifc
2902    o introduced flag for controllin non-hydrostatic metric terms
2903    o removed gravitySign from PARM04
2904    o switched to g77/ifc from pgf77 in aim experiments
2905    
2906    checkpoint46l_post
2907    o made convective adjustment work with pressure coordinates:
2908     - changed the direction of k-loop in convective_adjustment.F for the
2909       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2910     - adjusted the reference pressure k-index in convective_adjustment.F
2911     - adjusted the convection condition in convect.F (in analogy to
2912       calc_ivdc.F)
2913     - convective_adjustment no longer computes anything on the halos
2914     - removed the warnings about negative salinity from find_rho.F and
2915       find_alpha.F; instead the new routine look_for_neg_salinity, called
2916       at the beginning of find_rho, find_alpha, and find_beta, does a
2917       check of the entire slice, if CPP-option
2918       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2919    checkpoint46l_pre
2920    
2921    checkpoint46k_post
2922    o fixed the verification/global_ocean.90x40x15 experiment:
2923     - new bathymetry (the world according to A., JMC, and M.)
2924     - new initial fields and forcing fields (*.bin files)
2925     - new POLY3.COEFFS (for the next release one should switch to a full
2926       equation of state: JMD95P or MDJWF)
2927     - fixed several errors and redundancies in the data file
2928     - experiment uses looped cells
2929     - added matlab directory with diagnostic scripts for plotting of output
2930    
2931    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2932     - read AIM physics parameters from a file (data.aimphys)
2933     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2934    
2935    checkpoint46j_post
2936    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2937    o move wVel computation at the end of the time step, in S/R integr_continuity
2938    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2939    o update timeave pkg for wVel diagnostic.
2940    checkpoint46j_pre
2941    
2942    checkpoint46i_post
2943    o Clean up AIM package (and keep the results unchanged):
2944      include CPP_OPTION and use IMPLICT NONE in all routines ;
2945      declare all the variables _RL ; use _d 0 for all numerical constants.
2946      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2947    
2948    checkpoint46h_post
2949    o cleaned up the use of rhoNil and rhoConst.
2950      - rhoNil should only appear in the LINEAR equation of state, everywhere
2951        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2952        and the dynamical equations are all divided by rhoConst
2953    o introduced new parameter rhoConstFresh, a reference density of fresh
2954      water, to remove the fresh water flux's dependence on rhoNil. The default
2955      value is 999.8 kg/m^3
2956    o cleanup up external_forcing.F and external_forcing_surf.F
2957      - can now be used by both OCEANIC and OCEANICP
2958    checkpoint46h_pre
2959    
2960     Added code to convert surface volume flux (fresh water) into
2961     a mass flux when using P coordinates in the ocean (OCEANICP).
2962     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2963    
2964    checkpoint46g_post
2965    o Include a new diagnostic variable phiHydLow for the ocean model
2966      - in z-coordinates, it is the bottom pressure anomaly
2967      - in p-coordinates, it is the sea surface elevation
2968      - in both cases, these variable have global drift, reflecting the mass
2969        drift in z-coordinates and the volume drift in p-coordinates
2970      - included time averaging for phiHydLow, be aware of the drift!
2971    o depth-dependent computation of Bo_surf for pressure coordinates
2972      in the ocean (buoyancyRelation='OCEANICP')
2973      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2974        Theta, Salinity, and Pressure in the parameter list. This routine is
2975        presently contained in find_rho.F. This routine does not give the
2976        correct density for 'POLY3', which would be a z-dependent reference
2977        density.
2978    o cleaned up find_rho
2979      - removed obsolete 'eqn' from the parameter list.
2980    o added two new verification experiments: gop and goz
2981      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2982    checkpoint46g_pre
2983    
2984    checkpoint46f_post
2985    o Enable tangent linear (forward mode) gradient checks:
2986      - extended active file handling to g_... files
2987      - added TANGENT_SIMULATION to theSimulationMode
2988      - extended grdchk package accordingly
2989    o added tangent linear setup in verification/carbon/code_ftl
2990    o added adjoint setup in verification/front_relax/code_ad
2991    
2992    checkpoint46e_post
2993    o Added new equation of state -> MDJWF
2994      - EOS of McDougall et al., 2002, JAOT, submitted
2995      - caveat: the equation of state is only valid for a smaller (more
2996        realistic?) range of values than JMD95P/Z and UNESCO
2997      - added masks to the calculation of pressure in store_pressure
2998      - added more check values for density in check_eos (ini_eos.F), some of
2999        the old check values are out of the range of the MDJWF-eos, so don't
3000        expect perfect matches for those
3001    checkpoint46e_pre
3002    
3003    checkpoint46d_post
3004    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3005      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3006      case of pressure coordinates. eosType='JMD95Z' in
3007      combination with buoyancyRelation='OCEANICP' now causes an error.
3008    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3009      in find_alpha/beta.
3010    checkpoint46d_pre
3011    
3012    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3013      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3014    
3015    checkpoint46c_post
3016    o Changes necessary for ocean in p-coordinates
3017     -  Added new buoyancy relation = 'OCEANICP'
3018     -  Added new parameters = gravitySign (this used to be contained inside
3019        the factor dRdZ which I added when we first switched to R coordinates).
3020     X GM/Redi is not compatible (yet)
3021     X bottom drag and no-slip need to be debugged.
3022    checkpoint46c_pre
3023    
3024    checkpoint46b_post
3025    o Added new equation of state -> JMD95Z and JMD95P
3026      - EOS of Jackett and McDougall, 1995, JAOT
3027      - moved all EOS parameters into EOS.h
3028      - new routines ini_eos.F, store_pressure.F
3029    o Added UNESCO EOS, but not recommended because it requires
3030      in-situ temperature (see JMD95)
3031    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3032      unesco.f to be used with POLY3
3033    checkpoint46b_pre
3034    
3035    checkpoint46a_post
3036    o Added (atmospheric) pressure loading
3037      - new field in FFIELDS.h, etc...
3038      - new cpp flag ATMOSPHERIC_LOADING
3039    o Changed hFacC to _hFacC in calc_phi_hyd.F
3040    o Added SHORTWAVE_HEATING to some files for consistency
3041    checkpoint46a_pre
3042    
3043    checkpoint46
3044    further merges from release1_p5
3045    o new ctrl package
3046      - adopted from ECCO environment to enable optimization
3047      - added Eliassen Palm fluxes to controls
3048    o added Eliassen Palm flux controls to gradient check package
3049    o cost package
3050      - Compatible with new ctrl package
3051      - added Eliassen Palm cost hooks
3052      - modif's of existing cost functions
3053    o Adjoint-related bug fixes in kpp:
3054      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3055      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3056    o autodiff package
3057      - flow directives:
3058        + new for S/R do_the_model_io
3059        + enhanced for S/R checkpoint
3060        + new gmredi.flow
3061      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3062        disable adcommon.h/g_common.h by default.
3063      - fixed problem for adjoint of global_max
3064    o modified verification/carbon/
3065    o New setup for adjoint of global_ocean
3066    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3067    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3068    o incorporated hooks for sponge layer code (external_forcing.F)
3069    
3070    checkpoint45d_post
3071    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3072    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3073      (affects plume_on_slope "cg2d" output)
3074    o add new parameter deltaTfreesurf for free-surface time stepping
3075    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3076    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3077    o change phiMin in exp1 (to agree with documentation)
3078    o add new flags:
3079     - T,S forcing inside/outside Adams-Bashforth
3080     - turn off temp,salt advection and/or forcing
3081     - for each tracer, define internal flag for multiDimAdvection & A-B
3082    o monitor: change definition of KE to check conservation of Energy
3083    
3084    checkpoint45c_post
3085    o Removed f90 comments ("!")
3086    o Modified initialisations to enable exf package for MITgcm
3087      (without invoking ECCO_PACKAGE).
3088    o modifications to gradient check package (Martin Losch)
3089      - enable centered differences
3090      - modified format of standard output
3091    
3092    checkpoint45b_post
3093    o cleaned exchange calls in cg2d
3094    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3095    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3096      to configure barotropic setup (Martin Losch)
3097    o moved some initialisations within bi,bj loop in dynamics
3098      (TAF flow dependency)
3099    o in initialise_varia, moved call packages_init_variables
3100      before convective_adjustment_init
3101      (corresponding adjustment of TAF tape initialisation).
3102    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3103    
3104    checkpoint45a_post
3105    o compute Rho over the whole domain (extend iMin,jMin indices)
3106    o specific exchange for X-slice domain (case Ny=1)
3107    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3108    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3109    
3110    checkpoint44h_post = checkpoint45
3111    o Fix to restore differentiability:
3112      place at which packages_init_variables is called in
3113      initialise_varia is crucial for reverse control flow.
3114    o modifications in GMRedi to enable stable adjoint
3115      (corresponding modif's in thermodynamics, dynamics)
3116    o added missing hook for sponge layer code in external_forcing
3117    o modified test cost functions
3118    o storing in gad_advection (plus removal of write(0,*)!
3119    o missing headers TR1.h added in convective_adjustment routines
3120    o errorMessageUnit set non-equal zero in eeboot
3121      (conflict on some platforms, e.g. IBM SP3)
3122    o modified carbon verif.
3123    
3124    checkpoint44h_pre
3125    o vertical grid option: allow to put the Interface at the middle between
3126      2 cell-centers ; replace delZ in pkg/kpp by drF.
3127    o GM Advective form: Tracers are advected using the residual transport (=
3128      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3129    
3130    checkpoint44g_post
3131    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3132      results) ; ifdef missing in thermodynamics.F
3133    
3134    checkpoint44f_pre,checkpoint44f_post
3135    o added PTRACERS package
3136      This allows an arbitrary number of passive tracers to be integrated
3137      forward simultaneously with the dynamicaly model.
3138      + Implemented so far:
3139        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3140        - I/O and checkpointing
3141        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3142      + Not implemented so far:
3143        - KPP
3144        - OBCS
3145      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3146        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3147        line in data.pkg.
3148      + This package is disabled by default since it increases storage.
3149    
3150    
3151    o testscript: added -cleanup option
3152    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3153                 b) enable to filter 2D fields.
3154    
3155    checkpoint44e_pre,post
3156    o re-wrote convective adjustment to use pre-calculated weights
3157      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3158      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3159      Original calls to convect() still in place.
3160    
3161    chkpt44d_pre,post
3162    o added missing EXCLUDE_MONITOR flags
3163    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3164      (incompatible typ in MIN/MAX expressions caused problems
3165      on IBM SP3)
3166    o in genmake added variable MAKEDEPEND
3167      plus resetting for case SunOS
3168    o added timer_stats.c routine for IBM SP3
3169    o removed variables in dynamics
3170    !!! I forgot to create tag chkpt44d_pre !!!
3171    !!! But chkpt44d_pre = chkpt44c_post    !!!
3172    
3173    o real fresh water flux implemented with non-linear free-surface.
3174    
3175    chkpt44c_pre,post
3176    o few fix (mask in shap_s2, EmPmR in external_field_load,
3177      USE_NATURAL_BCS in solve_for_P);
3178    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3179    
3180    checkpoint44b_pre/_post
3181    o merge of relevant stuff from the ecco-branch:
3182      - genmake: removed $S64 overwrite for case SunOS
3183      - pkg/exf: update and corrections for field swapping and obcs
3184      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3185                  harmonized between ECCO and MITgcm
3186      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3187                      updated checkpointing_lev... lists for obcs
3188      - model/src: minor changes in forward_step, plot_field
3189                   added directive for divided adjoint in the_main_loop
3190      - pkg/mdsio: added mdsio_gl_slice
3191    
3192    o check parameters & config (chkpt44a_pre,post)
3193    o OBC and NonLin_FrSurf.
3194    
3195    checkpoint44
3196    o fix bug in mom_vi_del2uv
3197    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3198    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3199    o update AIM experiments (NCEP input files)
3200    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3201    o added some stuff for AD
3202    
3203    checkpoint43
3204    o added two new advection tests
3205    o added global 4x4 degree ocean test
3206    o added test of H&S94 with free surface on cube
3207    o some final mods for gradient check, adjoint,...
3208    
3209    checkpoint42
3210      Fixed AD-related problems:
3211    o Store directives up-to-date with re-arranged Adams-Bashforth
3212      (mainly thermodynamics.F)
3213    o New store directives for multi-dim. advection schemes
3214      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3215      * new common block and key passkey
3216      (mainly gad_advection.F)
3217    o Modified store directives for split of dynamics/thermodynamics
3218      for the case ALLOW_KPP
3219    o Cleaned argument list for timestep_tracer.F
3220    
3221    checkpoint41
3222    o re-formatted/added comments in prologues of key subroutines
3223      to work with protex
3224    
3225    checkpoint40
3226    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3227    o added FLT (floats) package from Arne along with demo. experiment
3228    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3229      implementation of forward-in-time forcing terms
3230    o more mods for non-linear free-surface including new variable
3231    o modified multi-dim method to work on cube
3232    o bug fix in KPP (from DM)
3233    
3234    checkpoint40pre9
3235    o added DST advection schemes
3236    o fix MPI bug on SGI's
3237    o modifications for non-linear free-surface
3238    o fixed conditionals for fixed flow/passive tracer only mode
3239    o added tension/strain form of stress tensor
3240    o changes to commenting of arguments for TAF/TAMC
3241    o added/updated many matlab scripts
3242    o added multi-dimensional advection method for tracers
3243      
3244    checkpoint40pre8
3245    o new package rw/
3246      Added method for dumping intermediate local arrays:
3247      mdsio_writetile - same as mdsio_writefield except works from inside
3248                        bi,bj loop
3249      mdsio_writelocal - same as mdsio_writetile except works for local
3250                         arrays
3251      write_local_r? - higher-level wrapper for mdsio_writelocal
3252      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3253      Example given at end of mom_vecinv.F that dumps some local arrays.
3254    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3255      control flux-form versus vector invariant code.
3256      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3257      or genmake -DISABLE ...
3258    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3259      (additional storing is now needed for case vecinv;
3260      currently nothing implemented to switch this storing off
3261      in case fluxform is used since no CPP flag available).
3262    
3263    checkpoint40pre7
3264    o bug fix in dynamics.F
3265      calc_viscosity called before k=1,Nr loop.
3266    o added some #ifdef's ALLOW_PASSIVE_TRACER
3267    o cleaned initialisations in ctrl_map_ini
3268      related to TAF
3269    
3270    checkpoint40pre6
3271    o split dynamics into thermodynamics & dynamics
3272    o corresponding split of calc_diffusivity into
3273      calc_diffusivity, calc_viscosity
3274      (kpp_calc_diff, kpp_calc_visc).
3275    o Added diffkr, kapgm to control variables
3276    o bug fix in gmredi_slope_limit for ldd97
3277    
3278    checkpoint40pre5
3279    o proper initialization of Adams-Bashforth time stepping
3280      + uses forward step for very first step of model (iter=0)
3281    o re-generated *all* output since almost all output is modified by this
3282      change (sorry but we've been putting this one off for about 2 years)
3283      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3284        *not* regenerated since they are already out of date and I don't
3285        want to create the impression that they are suddenly working.
3286    o removed KAP stuff for DEC's
3287    o modified/added many .cvsignore files in */code and */input
3288    o added new expt "solid-body.cs-32x32x1"
3289      + this uses an alternative form of ini_curvilinear_grid.F which
3290        is not necessarily any better than the current one...
3291    
3292    checkpoint40pre4
3293    o added re-initialisations of utrans,vtrans,rtrans in
3294      calc_common_factors which are crucial for TAF.
3295    o extended iMin,jMin range for calc_common_factors,
3296      calc_diffusivity
3297    o added option ALLOW_PASSIVE_TRACER
3298    o a few minor updates and fixes
3299    
3300    checkpoint40pre3
3301    o created calc_gtr1.F for gad package
3302    o split the_main_loop and re-introduced forward_step
3303    o some recomputations of nIter0 for TAMC
3304    
3305    checkpoint40pre2
3306    o Updated to latest branch of AJA, JMC
3307    o Added gradient check package
3308    o Added routines for passive tracer handling
3309    o Added carbon sequestration sensitivity experiment
3310    
3311    checkpoint39
3312     o Modifications and fixes to support TAMC
3313       (mainly missing or wrong directives)
3314     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3315       in addummy_in_stepping
3316     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3317     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3318     o Included following packages:
3319       cal: calendar
3320       exf: external forcing
3321       ecco: essential routines to control use of cal, exf
3322             (NB: this is not the full ECCO environment)
3323     o disabled some packages by default in genmake
3324    
3325  checkpoint38  checkpoint38
3326   o see notes_c37_adj.txt   o see notes_c37_adj.txt
3327   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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