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revision 1.232 by jmc, Wed Dec 31 20:29:54 2003 UTC revision 1.816 by dfer, Mon May 14 21:30:56 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 Refresh of tutorial_global_oce_latlon (includes changing salinity-like
8      passive tracer to an Age Tracer) + update output.txt
9    o pkg/exf:
10      - implement A-grid / C-grid selection for wind-stress input files.
11      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
12      for now, in exf_bulk_largeyeager04.F only :
13      - change implementation for case where windspeed + 2. components wind-stress
14        are read-in. AND use rhoConstFresh to convert evap.
15    o pkg/seaice:
16      - use correct EXCH_UV for wind-forcing (on A-grid).
17      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
18        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
19    o pkg/exf:
20      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
21      EXF_INTERPOLATION:
22      - merge global_with_exf/code version of exf_interp_read.F
23        to the main code ;
24      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
25        reading the file ; Important: This options needs to be defined to recover
26        previous code.
27        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
28      - no longer loose real*8 precision along the way when using exf_iprec=64.
29    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
30      - change discretisation of evp-solver in order to avoid another exchange
31        (changes lab_sea) and clean up a little
32      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
33        help the adjoint (this also changes the results slightly)
34      - add a few "_d 0" where they had been missing in seaice_evp.F
35      - cleaning up: remove unused seaice_calc_rhs.F
36    o pkg/exf: some cleaning-up:
37      - change various "constants" into runtime parameters
38      - cleaned-up Large&Yeager04 routine which should eventually
39        replace exf_bulkformulae.F (changed names of S/R and CPP)
40        and merged various ALLOW_ATM_WIND options
41     only used with thsice pkg (in thsice_get_exf.F):
42      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
43        which are used when useStabilityFct_overIce=TRUE (= the default)
44      - change default values of ice & snow emissivity and scale downward LW
45        by ice & snow emissivity.
46    o pkg/thsice:
47     fix few little problems, in thsice_calc_thickn.F:
48      - growth vertically (and not laterally) if iceFrac == iceMaskMax
49      - melt laterally only if hIce < hThinIce (as the comments say)
50      and in thsice_extend.F:
51      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
52      - start to form ice as soon as the minimum ice-volume is reachable.
53     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
54      and cpl_aim+ocn
55    o pkg/kpp
56     - move computation of surface related input fields to KPP into a new
57       subroutine kpp_forcing_surf.F
58     - remove wrong (within bi,bj loops) EXCH calls.
59     - little cleaning (add argument myThid in last position, cvs header ...)
60     - for now, fix conservation problem by exchanging KPPviscAz (may not
61       be the best fix)
62    o pkg/seaice
63     - check for inconsistent evp parameter/cpp-flag combination
64     - remove leftover errIO flat for obsolete name list error handling
65    o OpenAD
66     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
67    
68    checkpoint59a
69    o pkg/seaice: some parameter clarifications and a little bit of clean up
70    o pkg/thsice: rename run-time parameters:
71       himin       -> hIceMin
72       himin0      -> hThinIce
73       hihig       -> hThickIce
74       i0          -> i0swFrac
75       transCoef   -> bMeltCoef
76       frac_energy -> fracMelting
77      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
78       with default values (for now) that do not change the results.
79      remove old version of thsice vars advection in pkg/seaice.
80    o in FFIELDS.h:
81      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
82      - make pLoad & sIceLoad always available (but still only used if
83         ATMOSPHERIC_LOADING is #define).
84    o pkg/kpp: replaced _KPP_RL with _RL
85    o bug fixes for vertical diffusivity computations when both KPP and
86        3D diffusivity arrays are used.
87    o pkg/seaice: fix bug in evp solver, while doing that
88      - change (improve?) discretization of stress computations for both
89        cgrid-lsr and evp solver
90      - add a new routine to compute strain rates
91      - the above changes lab_sea results
92      - add no slip conditions for evp solver (off by default), lsr-version
93        may follow
94      - fix exchange for shear at Z-points (does not change lab_sea)
95      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
96        (to force the user to pick a time step since there is not "safe" way
97        of choosing it)
98      - add principal stress diagnostics
99      - rearrange fields for evp a little to avoid having to call a: too many
100        exchanges and b: exchanges for stress trensor components which we do
101        not have.
102      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
103        of evp, complete rewrite for lsr case (latter is does not yet work
104        in all cases)
105    o pkg/kpp: add code to have mixing in shelf ice caverns
106      - add myThid to all kpp routines (long overdue)
107    
108    checkpoint59
109    o pkg/exf:
110      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
111        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
112      - move exf header files from lower_case.h to UPPER_CASE.h ;
113        add missing cvs Header & Name
114      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
115      - add namelist param. selectStressGridPosition, exf_monFreq
116      - retire many _CLIM routines, and remove data.exf_clim
117        + params moved to data.exf
118        + climsst, climsss now handled by exf_set_gen, i.e.
119          climss?period=0 refers to constant field,
120          climss?period=-12 to monthly forcing
121      - split up namelists in data.exf
122    o pkg/seaice:
123      - remove seaice_exch and seaice_exch_uv
124      - remove superfluous exchange of theta
125      - add myThid to seaice_budget_ocean/ice
126      - add new interface for atmospheric wind forcing (C-grid only)
127        + new routine
128        + two new field (taux, tauy for stress over ice)
129        + removed one global field (DAIRN) for C-grid case only
130    o pkg/thsise
131      - 2nd set of modifs for thsice adjoint in conjunction with exf
132    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
133    
134    checkpoint58y_post
135    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
136      vertical diffusivity, similar to that in MOM4; turned on using
137      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
138      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
139    o Added capability for 3D specification of background vertical diffusion
140      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
141      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
142      "data" file that contains the 3D vertical diffusivity coefficients.
143    o ice dynamics (pkg/seaice) with thsice thermodynamics:
144      - add code within pkg thsice to advect & diffuse sea-ice fields
145      similar to (and will replace) what has been added in  seaice_advdiff.F,
146      but: - conserving Mass, Heat & Salt.
147           - better when using non-linear advection scheme (not yet fully tested)
148           - can also be used in atmospheric set-up (for now, only the diffusion).
149    
150    checkpoint58x_post
151    o IO option for global-file compact format:
152      - add options when generating topology (utils/exch2/matlab-topology-generator)
153      - add I/O capability (pkg/mdsio).
154      - adapt utils/matlab/rdmds.m to read this format.
155      for now long-line format not yet supported by pkg/mdsio (& exch2).
156    o shelfice: add a few diagnostics
157    
158    checkpoint58w_post
159    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
160      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
161      (and replace horiVertRatio in NH code).
162      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
163                         and tutorial_plume_on_slope (sensitive to truncation)
164    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
165      directly to drive seaice model (C-grid only)
166    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
167     - reintroduce computation of wind from stress,
168     - compute tau (in exf_bulkformulae.F) from windstress averaged to
169       mass points to avoid tau = 0
170     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
171    o rdmnc.m: make it work with "global" files created with gluemnc
172    o rdmnc.m : some improvements in dealing with singleton dimension
173      (tested on all testreport mnc output files).
174    o genmake2: disable pkg/profiles if netcdf test fails.
175    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
176    o move call to cal_readparms up to make calendar parameters/variable available
177      to all packages
178    
179    checkpoint58v_post
180    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
181      useDynP_inEos_Zc tested.
182    o pkg/exf: changes to properly interpolate/mask/scale initial fields
183    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
184      and portions thereof.  See read_cs.txt for description and examples.
185    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
186      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
187      following the great-circle arc between those 2 points.
188    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
189      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
190    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
191     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
192     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
193     - still needs work (not working with some options ; efficiency to improve)
194       and serious testing.
195     - use this scheme for temperature & salinity in 2 advection test exp.:
196       advect_xy & advect_xz, respectively.
197    
198    checkpoint58u_post
199    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
200    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
201    o testreport: add option "-skipdir" to skip some test.
202    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
203      momentum calculation.
204    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
205    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
206      remove checkpoint.F and the_correction_step.F (no longer used);
207      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
208    o add option (linFSConserveTr) to correct for tracer source/sink due to
209      Linear Free surface
210    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
211    o pkg/thsice: fix reading mnc-pickups
212    
213    checkpoint58t_post
214    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
215    o pkg/mdsio:
216     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
217       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
218       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
219     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
220     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
221       either MDS_READ_FIELD or MDS_WRITE_FIELD )
222     - new S/R (to replace MDSWRITEMETA), which allows to write more
223       informations (variable names, time ...) to meta files.
224     - modify rdmds.m to give back the meta file content.
225    o pkg/diagnostics: change vertical interpolation to be safer, and more
226       flexible (define p-levels to interpolate to in data.diagnostics);
227      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
228       diagnostic pointer.
229    o pkg/seaice: more cleaning up of seaice_growth, added many comments
230    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
231    o fix multi-category seaice:
232     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
233       SEAICE_MULTICATEGORY
234     - fix short wave heat flux
235    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
236       and allow to use EVP solver. Change forward lab_sea: test both EVP
237       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
238    o Initial check-in of lab_sea adjoint
239      (very similar to natl_box_adjoint/code_seaice)
240      * used C-grid and EVP solver
241      * used KPP, GM/Redi
242      * uses inAdExact=.TRUE.
243      * gradient checks fail for both ADM and TLM
244        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
245        f.d. gradients actually seem more problematic than ADM, TLM gradients;
246        issue is related to forward mismatch between g77 an ifort
247    o pkg/seaice: overhaul of thermodynamics
248     - growth.F and groatb.F are replaced by new routine seaice_growth.F
249     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
250     - move a few global fields out of SEAICE.h into seaice_growth.F and
251       make them 2D (FICE/QNETO/ ...)
252     - remove FO (it is the same as QNETO)
253     - introduce a few local fields to avoid modifying external fields such
254       as atemp, etc.
255    
256    checkpoint58s_post
257    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
258      changed exf_set_gen.F so that
259        genperiod=0 means input file is one time-constant field and
260        genperiod=-12 means input file contains 12 monthly means
261    o CG2D: use pre-computed solver main-diagonal (stored in common block);
262      this affects truncation error ; generate new output file for exp. which
263      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
264        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
265        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
266        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
267        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
268        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
269    o start implementation of deep-atmosphere and anelastic formulation
270    o verification: remove 2nd copy of input files and use script "prepare_run"
271      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
272    o mom_common/vecinv/fluxform: fix a few initialisation isssues
273    o profiles: fix for multithreaded case
274    
275    o diagnostics: rename few diags:
276      s/'PRESSURE'/'RCENTER '/g
277      s/'TICE    '/'oceFreez'/g
278      s/'TAUX    '/'oceTAUX '/g
279      s/'TAUY    '/'oceTAUY '/g
280      s/'SWFLUX  '/'oceQsw  '/g
281      s/DIFx/DFxE/g
282      s/DIFy/DFyE/g
283      and add few ocean-forcing diagnostics:
284      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
285    o modifications to pkg/seaice/growth.F and budget.F, which change results of
286      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
287      as actual snow thickness.  It now refers everywhere to effective snow
288      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
289    
290    checkpoint58r_post
291    o modifications to pkg/seaice/growth.F, which change results of
292      lab_sea experiment: fixes pertain to melting snow over open water, to
293      masking EVAP under sea ice, and to using the correct AREA variable for
294      computations of EVAP, PRECIP, HSNOW, and GHEFF
295    o add ability to read bathy, salt, and theta using MNC (off by def)
296    o add flooding algorithm and advection of HSNOW for pkg/seaice;
297      both are turned off by default and do no change any results
298    o seaice advection with pkg/thsice: a step toward the use of non-linear
299      advection scheme, but #ifdef or commented out for now (requires more EXCH).
300    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
301      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
302      in natl_box (affects results @ truncation level: update output.txt)
303    o multi-threading and IO:
304      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
305      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
306        (needed to work with SingleCpuIO): tested in all verif. exp.
307    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
308      affects the results (but none of the verification test uses this scheme).
309    o Adding some pkg/diagnostics capability to pkg/seaice
310      (will certainly be subject to changes)
311    o ctrl: adding new control variables:
312      lwflux, lwdown, evap, snowprecip, apressure, runoff
313    
314    checkpoint58q_post
315    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
316      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
317      high_res_cube configuration by 4% on Columbia.
318    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
319      add (in global_with_exf/code) a version of EXF_INTERP_READ without
320      dynamical allocation (seems to work in multi-threaded).
321    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
322      single CPU io) so that TAF does not have to see EESUPPORT.h
323    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
324    
325    checkpoint58p_post
326    o obcs: stop if obcs is used with useCDscheme = .true.
327    o shelfice:
328     - fix a sign error so that no slip at shelfice interface works
329     - remove stop for combination non-hydrostatic code and shelfice. That does
330       not mean, that the results are correct, but at least they are numerically
331       stable
332    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
333    o added adjoint exch routined for all exch*3d* routines
334      and updated flow directives
335    
336    checkpoint58o_post
337    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
338      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
339    o change controling S/R for writing pickup file (new S/R do_write_pickup)
340      and clean-up reading/writing of pickup files.
341    o fix local version of read/write pickup (NH part) in rotating_tank/code
342    o simplify EXCH interface:
343     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
344     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
345    o added the regrid package
346    o shelfice:
347     - add a simple boundary layer scheme to reduce noise
348     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
349    
350    checkpoint58n_post
351    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
352       local variable (not in common block).
353    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
354      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
355      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
356        to work with SingleCpuIO.
357    o add "_d 0" to real constant of pkg/cfc subroutines ;
358       update exp. cfc_exemple & tutorial_cfc_offline output files.
359    o multi-threading and IO:
360      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
361        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
362      - barrier before and after reading.
363      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
364      - avoid using MDS_WRITELOCAL for LAND pkg output.
365      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
366        common-block variables ; Allows multi-threading with master-thread IO.
367    o change default MAX_NO_THREADS from 32 to 4 ;
368      and stop cleanly when MAX_NO_THREADS is too small.
369    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
370    
371    checkpoint58m_post
372    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
373       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
374    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
375       keep global_ocean.90x40x15 (for AD testing) with former secondary test
376       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
377    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
378        add MITgcm_tutorials (= code + all the tutorials)
379    o ecco, option to compute cost for total ssh (mean+anom)
380    o consistent with addition of ptracer and ssh in pkg/profiles
381    o profiles: adding ptracer and ssh
382    o testreport: change multi-test output-file name
383      (from output.txt.{name} to output.{name}.txt)
384    o profiles: now ok for mutli-tiles case
385    o seaice: add 4 parameters for different advection schemes for area,
386      (effective) seaice thickness, enthalphy, and snow height. Their default
387      is the standard parameter SEAICEadvScheme
388    o calc_gw:
389     - add cosFacU in zonal viscous flux (harmonic.visc.).
390     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
391       of tutorial_plume_on_slope.
392    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
393    o calc_gw: true flux-form, account for horizontal grid spacing.
394      update rotating_tank results, but not plume_on_slope (affected at
395      truncation level, 11 digits).
396    
397    checkpoint58l_post
398    o calc_gw:
399     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
400     - remove side-drag for now (need to fix it); update plume_on_slope results.
401     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
402    o commit code to make SST/SSS weights spatially variable
403      (based on either variable in-situ or variable initial T/S weights)
404    o pkg/ecco:
405      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
406        now based on horizontally varying weights wthetaLev, wsaltLev
407      * cost_averagesflags now returns year indices in addition to day, month
408      * sflux balance is performed on annual basis
409        (sflxumm, sfluxmm2, bal_sfluxmm)
410      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
411        including separate counting and multipliers
412    o pkg/rbcs
413      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
414    
415    checkpoint58k_post
416    o testreport:
417     - always build in dir. "build" (if not there, mkdir build instead of building
418       & running in input)
419     - run in dir run (if it exists), in build otherwise.
420     - call prepare_run (if input/prepare_run exists)
421     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
422    o pkg/exf modifications to interpolation and rotation routines for more
423       reasonable treatment of North Pole singularity: for tracers North Pole
424       value is set to northernmost zonal-mean value, for zonal velocity it is
425       set to zero, and for meridional velocity it is set to northernmost value.
426    o pkg/exf/exf_check_range.F
427     - add tile index to diagnostics and move stop statement to the very
428       end of the routine.
429    o pkg/diagnostics: (diagnostics_main_init.F)
430      define title of isomorphic variables according to the current config.
431    o pkg/thsice with pkg/seaice dynamics:
432    - fix domain of computation (interior only, required for exf) and do exchanges
433    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
434    o towards a standard way of dealing with multi-threading in MONITOR
435      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
436    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
437       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
438    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
439    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
440    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
441       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
442    o tracer advection:
443     - clean-up and simplify calc_common_factors.F
444     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
445       advection subroutine (but still not used within DST advection S/R)
446    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
447    
448    checkpoint58j_post
449    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
450      from file (collects calls previously in FORWARD_STEP)
451    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
452    o adjoint store dir. adjusted accordingly
453    o genmake2
454      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
455    
456    checkpoint58i_post
457    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
458      on wind stress (SEAICEstressFactor defaults to 1.)
459    o Total number of Timers is finite (<=40): comment out 2 non-essential one
460      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
461    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
462      on CS-grid: no longer loosing mass.
463    o exf & curvilinear-grid: no longer modify longitude xC & xG.
464    o pkg/ggl90: fix sloppy output and fix a bug
465    o pkg/seaice: added SEAICEuseEVPpickup parameter
466      - Set to false in order to start EVP solver with
467        non-EVP pickup files when using SEAICEuseEVP
468      - fix sign error in diffusion in seaice_calc_rhs
469    
470    checkpoint58h_post
471    * Modifications for bottom topography control
472      o replace hFacC by _hFacC at various places
473      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
474      o add non-self-adjoint cg2d_nsa
475      o update autodiff support routines
476      o re-initialise hfac after ctrl_depth_ini
477      o works for 5x5 box, doesnt work for global_ocean.90x40x15
478    * Adding verification for 5x5 box (4-layer) bottom topography control
479    
480    checkpoint58g_post
481    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
482       used for mean seasonal cycle, mean diurnal cycle); add an example
483       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
484    o pkg/ggl90:
485      - add parameter (minimum surface kinetic energy)
486      - fix bug (avoiding division by zero)
487    o couple pkg/thsice to pkg/seaice:
488      - modify advection in seaice to accomodate new scalar fields to be advected
489      - only muliDimAdection scheme work with seaice/thsice
490      - mapping of thsice-variables to seaice-variables, back and forth
491      - does not break the verification experiments, but does not give the
492        desired results either
493    o pkg/seaice
494      - make (default) second order advection a bit less confusing?
495    
496    checkpoint58f_post
497    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
498      to pkg/seaice):
499      - new routines thsice_map_exf and thsice_get_exf provide the interface
500      - add an additional formal parameter to thsice_solve4temp
501    o pkg/exf:
502      - add new fields wspeed, snowprecip (to be able to couple to thsice)
503      - correct Stefan-Boltzmann constant
504      - new parameter for longwave surface emittance
505      - separate some stuff from exf_bulkformulae into new routines  
506        exf_radiation, exf_wind
507      - add new parameters and constants: longwave emissivity for ocean, ice
508        and snow, evaporation parameters over ice
509      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
510        either wind from stress or stress from wind
511    o pkg/thSIce:
512    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
513    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
514       and THSICE_CALC_THICKN
515    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
516    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
517      to make debugging easier.
518    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
519    o pkg/bulk_force:
520      - clean-up comments and parameters ;
521      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
522    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
523      generate new output for test-experiment: aim.5l_cs.thSI
524    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
525      testreport accordingly
526    
527    checkpoint58e_post
528    o SEAICE_CGRID adjoint done
529    o R_STAR adjoint implemented.
530      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
531      * need to sort out init. of h0facc, etc.
532    o Make pkg/profile fully independent of ecco,cost, etc. stuff
533      to be able to use it in pure forward.
534    
535    checkpoint58d_post
536    o upgrade simple test-experiment to tutorial example:
537     step.1: duplicate the experiment and (step.2) will remove the old copy.
538      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
539      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
540      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
541      tutorial_global_oce_biogeo    <- copy of dic_example
542      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
543      tutorial_plume_on_slope       <- copy of plume_on_slope
544      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
545      tutorial_global_oce_optim     <- empty for now (David ?)
546      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
547     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
548    o correct a sign problem in cost_scat.F
549    o obcs and ptracers: fix boundary conditions for advections schemes
550      with larger stencil
551    o thsice adjoint: start
552    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
553      completeness
554    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
555      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
556    o ptracers adjoint:
557      * avoid extensive recomputatations
558      * fix missing re-init. of gptr (missed by TAF)
559    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
560      me to turn off the excessive output to STDOUT that this package produces
561    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
562      and add those terms in Vector-Invariant formulation.
563    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
564      if the control period (xx_hfluxperiod etc) is 0
565    o in profiles pkg, clean routines and fix details
566    o in ecco pkg, reading ssh data:
567      fix problem in case the model does not start at iter0=0
568    o fix mnc-pickup/restart for ptracers
569    o new package prifiles:
570      code to compute profile-based cost by Gael Forget
571      (modifs in ecco, ctrl, autodiff)
572    o Benign bug fix in initialization (spotted by M. Mazloff) of
573      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
574    
575    checkpoint58c_post
576    o adjoint: finish NLFS adjoint and provide reference output in
577      verification/global_ocean.90x40x15/results_ad_nlfs
578    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
579      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
580      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
581      with SEAICE_CGRID defined.
582    o move calendarDumps from "data" to "data.cal" and clean-up the code
583      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
584    o add useEXF & useCAL flags (for now, set in hard-coded way)
585    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
586      (were missing in NH mode, and wrong in quasihydrostatic mode).
587      waiting for Chris updated version of calc_gw to add those CALLs.
588    o fix bug in quasihydrostatic S/R ;
589      add a test for this option: global_ocean.90x40x15.qshyd
590    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
591      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
592    o add on/off flag useOffLine for package OFFLINE
593    o seaice:
594      - modify advection so that it works also on the C-grid
595      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
596        problem in multi-tile runs with C-grid
597      - add flags for clipping ice velocities and/or masking solver forcing
598      - fix drag (ocean on ice) formulation and a bug that caused noise in the
599        C-grid solver
600      - added a few comments to seaice_diffusion.F
601      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
602        are now exclusive)
603      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
604        required re-ordering the code a little:
605       + make DAIRN global variable (defined in SEAICE)
606       + move computation of the viscosities eta and zeta into a new separate
607         routine (because I need to recompute them in seaice_ocean_stress.F)
608    
609    checkpoint58b_post
610    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
611      update output.txt of exp. aim.5l_cs.thSI
612    o various mnc cleanups and improvements:
613      + shrink lookup tables by factor of ~4
614      + better error reporting when running out of lookup space
615      + able to handle longer path/file names (up to 500 chars)
616    o adjoint:
617      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
618      - TBD: "hidden" mom_vecinv recomp. in dynamics
619    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
620     (allow to differentiate between forcing components using new integer flags:
621      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
622     and add new flag to put Dissipation tendency out of Adams-Bashforth.
623    o ecco
624      - enable trend removal from SSH anomaly obs.
625    o adjoint
626      - a fix for PmEpR when #undef EXACT_CONSERV
627      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
628      - try to fix "hidden" recomp. in forward_step for NLFS
629        (NLFS seems broken sometimes after I checked it in)
630    o seaice:
631     - add c-grid version of the dynamic solver:
632       + three new routines that are the c-grid substitute lsr, dynsolver
633         and ostres
634       + put a few fields that were local to dynsolver into global common
635         blocks, so that I can move the computation of stresses etc into
636         seaice_lsr (saves coding but may break the adjoint).
637     - replace more hardwired parameters by runtime parameters
638     - add ice masks that mask the rhs of the implicit solvers where there
639       is no ice (commented out in seaice_dynsolver, because i am not sure
640       if this works properly), eventually this should replace the clipping
641       of ice velocities in seaice_dynsolver to +/-40cm/s.
642    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
643      include it only where its needed
644    o move balancing of fluxes before the call of external_forcing_surf
645    o seaice:
646      - correct units of turning angles (now they are really in degrees)
647      - move computation of GWATX/Y out of main routine into dynsolver
648      - initialize GWATX/Y in seaice_init
649    o Apply mask on Fresh-Water flux (needed for SSH forcing).
650      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
651    o seaice: add runtime flags for turning angles (default to zero)
652    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
653      and trend from exf forcing and ctrl control adjustments
654    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
655      (since checkpoint57x_post)
656    o change the default rotation period to 86164.s = the Earth rotation
657    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
658      and based on a reference stratification. Tested within hs94.cs-32x32x5.
659    o seaice advection: add code for choosing between the default (2nd order
660      central differences) and multiDim advection schemes provided by
661      pkg/generic_advdiff
662    o seaice:
663      - removed all references to SEAICE_GRID.h fields from
664        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
665        (cubed-sphere configuration will change a little)
666      - grid computations in seaice_init are obsolete now.
667      - cleaned up code a little so that is easier to read (hopefully).
668      - added new (better?) discretizations of default advection and diffusion
669        (turn on with SEAICEuseFluxForm)
670      - replace 1 in 3d global fields by kSurface in growth.F
671      
672    checkpoint58a_post
673    o seaice:
674      - bug fix in advect.F
675    o shelfice:
676      - separate shelfice load anomaly from pload (breaks with time
677        dependent forcing), => introduce constant field shelficeLoadAnomaly.
678        Its default is 0., but it may be computed more cleverly from (unknown)
679        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
680        done offline. A good approximation of the pressure load anomaly is
681        necessary to avoid large initial adjustment processes underneath
682        deep-reaching shelfice.
683      - small fix in ISOMIP shelfice_thermodynamics
684      - add more sophisticated thermodynamics of Hellmer (1989), this is
685        now the default
686      - give a few constants more intuitive names
687    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
688      if bulk formulae are used in long integration (especially EmPmR). Turn
689      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
690      if balancePrintMean, the imbalance that is substracted is printed to
691      STDOUT.
692    o fix bug (typo) in obcs_apply_eta.F
693    o add a new package shelfice which enables us to model the circulation
694      underneath shelf-ice with draughts of hundreds of meters.
695     - works
696     - to do: + include improved thermodynamics
697              + check whether kSurfC (from model/inc/SURFACE.h) can be used
698                instead of new field kTopC
699              + can we use topoFile, Ro_surf and existing code in ini_depth.F
700                instead of new field R_shelfIce and new code in ini_depth.F
701                and ini_mask_etc.F?
702              + adjust vertical mixing schemes?
703    o seaice pkg:
704     - add a cpp-flag to include a simple formula for a salinity dependent
705       freezing point of sea water at the surface
706     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
707       meridional stresses are now different (and hopefully correct)
708    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
709       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
710       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
711    o pkg/diagnostics: add options and parameters for regional-statistics
712       diagnostics ; define regions by reading a region-mask from a file
713       (might add other options later)
714    o pkg/bulk_force:
715     - add option and parameters to use AIM surface-flux formulae.
716     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
717       others forcing fields (defined in PARM05, parameter file "data") are loaded
718       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
719     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
720     - use the right EXCH call for uwind,vwind (to work on CS-grid).
721     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
722       and parameters (note: calcWindStress replaces .NOT.readwindstress).
723     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
724    
725    checkpoint58
726    o add "--embed-source" option to genmake2 which, when the supporting
727      tools can be compiled (as determined by genmake2) will turn on the
728      embed_files package which then embeds the entire MITgcm source code
729      (*.[fFhc] + Makefile) used for the build within the executable
730      - requested by CNH but off by default
731      - adds a paltry <9MB to the mitgcmuv executable in most cases
732      - only writes the output when useEMBEDSRC in eedata is true
733    o clean up 3-dim. relaxation codes:
734      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
735      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
736      * Thanks to Tom Haine for testing!
737    
738    checkpoint57z_post
739    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
740      affects output (@ truncation level) of exp. plume_on_slope ; updated.
741    o fix the pickup behavior for obcs in combination with ptracers
742    o fix a bug in ptracers_external_fields_load
743    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
744      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
745    o transfered surface NH pressure to eta field (if exactConserv).
746    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
747         and update lab_sea output.txt file.
748    o completing 3-dim. relaxation code: additional term
749         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
750      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
751      * At compile time, in "EXF_OPTIONS.h" set
752          #define  ALLOW_CLIMTEMP_RELAXATION
753          #define  ALLOW_CLIMSALT_RELAXATION
754      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
755          tauThetaClimRelax3Dim = 15552000.0,
756          tauSaltClimRelax3Dim  = 15552000.0,
757      * 3 cases:
758          1) Use a constant-in-time 3-dim. field
759          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
760          3) Real-time relax. to time-evolving prescribed field
761    o Adding Laplacian-type smoothness constraint on
762      initial and boundary (forcing) controls (ic, bc)
763      * enable at compile-time via
764        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
765      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
766      * Absolute scale somewhat unclear so far
767      * no area weighting was included since no other cost term does so far
768    
769    checkpoint57y_post
770    First step for a NLFS adjoint
771    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
772    o new init. routines for calc_r_star, calc_surf_dr
773    o still need to deal with ini_masks_etc
774    o testreport seemed happy
775    checkpoint57y_pre
776    
777    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
778    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
779    o add new offset feature to offline pkg (plus minor cleanup)
780    o cfc fixes for final year of integration
781    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
782      be in GCHEM_OPTIONS).
783    
784    checkpoint57x_post
785    o fix testreport Pb in multiple test experiment.
786    o cleanup our namelist syntax in verification:
787      - make it more F95 standards compliant (some work still needed)
788      - allows the vast majority of our tests to work with gfortran
789    o Non-Hydrostatic:
790     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
791     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
792    o Allow to apply AB on T,S rather than on AB(gT,gS):
793     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
794     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
795       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
796     - need a "clever" read_pickup to restart from the other AB formulation
797    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
798    o remove some unused variables (reduces number of compiler warnings)
799    o adjoint
800      * Disable useVariableViscosity for adjoint for time being
801        (there are a number of extensive recomputations)
802      * Initialize certain variables needed for adjoint
803    
804    checkpoint57w_post
805    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
806                 fix the singleCpuIO RS version of MDSWRITEFIELD
807       and add a WARNING if using globalFiles=T with multi-processors.
808    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
809      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
810    o tracer advection scheme:
811      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
812       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
813       was not very convenient).
814      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
815       (further tests needed for the implicit DST & Flux-Limiter schemes).
816    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
817      and sRef for convenience, handy, when you want to initialize
818      ptracers in a large domain with a constant non-zero value. Also,
819      untangle ptracers_init.F a little.
820    
821    checkpoint57v_post
822    o change dome exp. to use variable viscosity in side-drag terms.
823    o remove all the files from the cfc_offline test since they are now
824      incorporated into tutorial_cfc_offline which has been producing
825      identical results for a few days of testing
826    o add new parameter: sideDragFactor to enable half-slip-side BC
827      and change side-drag S/R to use viscosity from mom_calc_visc
828      (can switch back by setting sideDragFactor=0.); affects results at
829      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
830       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
831    o vorticity & strain are now computed without masking, to account for
832      no-slip-side BC in variable viscosity calculation ; mask is applied
833      anyway later on, before computing advection/coriolis terms.
834    o modify exp4 to test new obcs support for reading from external files
835      and for passive tracers
836    o fix behavior of ptracers_monitor when monitor output is written to a
837      netcdf-file; still not independent of monitor.F (writes in the same
838      file).
839    o change default value of tRef (put a uniform, meaningful value for ocean
840      & atmos) and initialize sRef (was missing, as Martin mentioned).
841    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
842      to be proportional to enstrophy dissipation length.  Thus,
843       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
844      This is now consistent with Smagorinsky and with the manual.
845    
846    checkpoint57u_post
847    o OBCS and PTRACERS: add open boundary support for passive tracers
848      - either use homogenous (pseudo) v.Neumann conditions or prescribe
849        OB-values from file; this is not different from the way theta and salinity
850        are treated
851      - however, Orlanski-radiation conditions are not supported, and the model
852        will stop if you use pTracers and Orlanski at the same time.
853      - beefed up the rountine obcs_external_fields_load: now only those open
854        boundary values are overwritten with values from files for which there
855        are really files, otherwise the OB-fields remain untouched. This makes
856        it possible to use different OBs at different ends of the domain (as
857        with EXF)
858    o reduce number of exch calls in shap_filt (s2).
859    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
860      truncation level) 4/5 MLAdjust test results (11&12 digits match).
861    
862    checkpoint57t_post
863    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
864    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
865      same truncation, independent of the face number: affects affects several
866      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
867    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
868      note that biharmonic viscosity + no-slip was not tested in any experiment.
869    o fix bug in non-linear free-surf side-drag ; generate new output for
870      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
871    o make mnc honor the writeBinaryPrec flag for most kinds of output
872    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
873    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
874      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
875    o add brackets in multi-terms sum to get same truncation, independent of
876      the face number (manage to get exactly same value of gU,gV at the cs-edge)
877      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
878    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
879      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
880      a maximum grid-scale Reynolds number.  Also, changes all length calculations
881      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
882      Suggested values of viscosity parameters found in mom_calc_visc.
883      Many new viscosity diagnostics available.
884    
885    checkpoint57s_post
886    o Add clearing-house for viscosity calculations, mom_calc_visc and
887      correct numerous bugs in LeithD and Smagorinsky discretizations.  
888      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
889      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
890      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
891      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
892      The Strain-Tension form is now called with useStrainTensonVisc=.true.
893      ViscAhStrain and viscAhTension are now retired.
894    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
895    o In response to JMC's bug report, genmake2 now ignores any soft-links
896      that it finds in the *current* directory when searching for files.
897      Soft-links found in any other source directories will still work as
898      they did before.
899    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
900      a C routine to unlimit the stack size
901    o mnc-ify pkg/aim snapshot vars
902    o mnc-ify pkg/land as requested by Daniel
903    o various changes to mnc including:
904      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
905      - output can now be grouped so that all files within a group
906          change the ITER portion of their names in lock-step together
907      - can now read ("global") PER-FACE (in addition to PER-TILE) files
908          and works with both EXCH1 and EXCH2 (but needs more testing)
909      - writing works for all verification test cases w/ g77 on Linux
910    
911    checkpoint57r_post
912    o make MNC variable initialization happen earlier
913    o add diagnostics for (almost) each term of the momentum Eq.
914    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
915    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
916    o remove MINIMAL_TAVE_OUTPUT option ;
917      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
918    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
919      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
920    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
921    o add time-dependent SST, SSS control
922    o cost terms in ecco/ modularized (new cost_generic.F)
923    o cost_averages routines are modularized (new cost_averagesgeneric.F)
924    o new infrastructure for seaice model vs. obs misfits in seaice/
925      * driver from the_main_loop.F is seaice_cost_driver.F
926      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
927      * gradient check in Exp. 6a of natl_box_adjoint/
928    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
929      (see README file)
930    
931    checkpoint57q_post
932    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
933    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
934      - bug was reported by Jean-Michel and Ian Fenty
935    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
936      update exp. cpl_aim+ocn output.
937    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
938      Needed for high-res. runs with large global files
939      to be able to limit tapelev size
940    o Changed some tests for adjoint:
941      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
942      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
943      * global_ocean.90x40x15/ back to default 3-level checkpointing
944    o Modifications to enable scripted COMMON to MODULE conversion
945      * verification/OpenAD/code/ has necessary scripts and description;
946      * converts, compiles and runs successfully;
947    
948    checkpoint57p_post
949    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
950    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
951      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
952    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
953    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
954      (was already the case for dissipation with mom_vecinv,
955       and also the case for grad.PhiHyd when staggered-timeStep)
956      This will allow to put dissipation out-off the AB time-stepping.
957     Unfortunately, affects truncation error. Update output of exp. that "fails"
958      (cg2d matching number) and leave the others for later: front_relax(10),
959      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
960      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
961    
962    checkpoint57o_post
963    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
964      (2) its ready to be documented during the 20050801 DocFest
965    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
966      for ideal_2D_oce and lab_sea on linux_ia32_g77
967    o set to #undef CTRL_SET_OLD_MAXCVARS_30
968      in global1x1_tot/code_seaice_adj to access indices 32, 33
969      (worth another tag)
970    
971    checkpoint57n_post
972    o adding precip control xx_precip 32
973    o adding swflux control xx_swflux 33
974    o Replacing 10 forcing penalty cost routines by 1 generic.
975    o Implementing partitioning in time-mean and variable adjustment
976      for atmos. state.
977    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
978    o in natl_box_adjoint:
979      * updated exp 1 to 10
980        (but does not have time-mean vs. variable split results yet)
981    o updated global1x1/*_seaice_adj/
982      to incorporate latest changes
983    o enable useSingleCpuIO for mdsio vector routines
984      (applies in particular to tapelev I/O)
985    o removed inefficient K-loop in all active_file*control*.F
986    
987    checkpoint57m_post
988    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
989      and advect_cs (use EXCH-2 and standard cs-32 grid files).
990    o pkg/exch2: filling of face-corner halo regions is optional
991      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
992    
993    checkpoint57l_post
994     tag before updating tutorials (pre-release-2)
995    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
996       for output and interpolation of input fields onto model grid)
997    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
998       Affects results of exp. rotating_tank ; update output.txt.
999    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1000          and taking the square quantity and/or using a fraction-weight field.
1001    o fix aim_diagnostics_init.F mate numbers.
1002    o add mnc output capability to diagnostics/diagstat and update
1003      our cvsignore files for the ACSII output generated
1004    
1005    checkpoint57k_post
1006    o lab_sea now uses diagnostics package and provides a suite of
1007      new EXF diagnostics output.
1008    
1009    checkpoint57j_post
1010    o exf
1011      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1012        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1013        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1014      * extended diagnostics output
1015        - now includes all EXF variables
1016        - hs, hl moved to common block
1017        - separate S/R for diagnostics, called after ctrl vector is added
1018        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1019        - EXFqnet contains true Qnet (i.e. includes qsw)
1020      * updated verif. lab_sea, global_with_exf
1021      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1022        to ensure that diagnostics sees a true EXFqnet
1023    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1024    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1025      several times with different frequencies.
1026    o mnc-ify the thsice package as requested by Daniel Enderton
1027      - the monitor--MNC output needs work
1028      - many attributes need to be added (most are currently blank)
1029    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1030      - many attributes need to be added (most are currently blank)
1031    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1032    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1033    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1034      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1035         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1036    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1037     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1038    
1039    checkpoint57i_post
1040    o Diagnostics package was changed: diagnostic allocation is now deactivated
1041      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1042    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1043      add 1rst Order upwind vertical Shear.
1044    o add a quick fix for A/B checkpointing in OFFLINE mode
1045    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1046      end-run around the C/Fortran linking horror in eesup/src/timers.F
1047    o added pkg/runclock: allows user to terminate run based on wall clock
1048    o added non-hydrostatic scaling parameter: nh_am2
1049    o pkg/my82: futile attempt to make results compiler-independent by adding
1050      some "_d 0", etc. no effect.
1051    o for mnc output, fill the 'T' coordinate var with myTime and create a
1052      separate 'iter' variable for iteration count
1053    o pkg/diagnostics:
1054      add new capability: output of Global/Regional & per-level statistics ;
1055      tested against monitor output (including land & thSIce) on various exp.
1056    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1057    
1058    checkpoint57h_done
1059      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1060      data.diagnostics, data.gchem, data.ptracers) is done.
1061    
1062    o pkg/diagnostics: prepare for Global/Regional statistics.
1063      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1064    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1065      and rename it: DIFFERENT_MULTIPLE
1066    
1067    checkpoint57h_post
1068    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1069    o pkg/diagnostics: change output frequency, now in seconds (instead
1070      of Nb of iterations). This requires to change data.diagnostics.
1071    checkpoint57h_pre
1072    
1073    o in mnc, let the user create the output dir if both mnc_outdir_date
1074      and mnc_outdir_num are false
1075    o add fflags() to pkg/diagnostics which allows one to specify, on a
1076      per-file basis, the file precision [default behavior is unchanged]
1077    o added diagnostics to pkg/kpp, including computation of mixed layer
1078      depth based on a temperature/density criterion
1079    o updated verification/natl_box to test the new pkg/kpp diagnostics
1080    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1081    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1082    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1083      not mnc -- this mistake was found by JMC and is now corrected
1084    
1085    checkpoint57g_post
1086    o add Adams-Bashforth 3rd Order time stepping:
1087      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1088      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1089    checkpoint57g_pre
1090    
1091    o make lambda[Theta,Salt]ClimRelax spatially varying
1092      (default remains spatially uniform constant based on tau)
1093    o added new control variables
1094      * init. uVel, vVel, etanN
1095      * lambda[Theta,Salt]ClimRelax
1096    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1097      (suggested by G. Forget)
1098    
1099    checkpoint57f_post
1100    o add parameter "baseTime" = model base time = time at iteration zero
1101      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1102      account for baseTime shift
1103    o move Coriolis arrays from PARAMS.h to GRID.h
1104    checkpoint57f_pre
1105    
1106    o mnc-ifying the seaice package
1107    o introduced an alternative length scale calculation for use in the limiting
1108      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1109    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1110    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1111      as well as grad(vort3).  Made it compatible with both approximate form
1112      for the cubed sphere and full form of these gradients.  Added flag
1113      useFullLeith to select between approximate and full form.  
1114    o add "d0" in getcon.F to reduce differences between compilers/platforms
1115      update output.txt of exp. fizhi-gridalt-hs
1116    o change port_rand funtion to allow to set the seed.
1117    o fix obscure MNC bug involving conversion between reals and integers
1118      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1119        new version is now more standards-compliant
1120    o adjoint-related modifications
1121      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1122      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1123      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1124    
1125    checkpoint57e_post
1126    o Adding eddy stress controls a la Ferreira et al.
1127    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1128    
1129    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1130      update output.txt of exp. fizhi-gridalt-hs
1131    o add more "Z" dimensions and associated coordinate vars to MNC
1132    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1133    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1134      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1135      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1136      months and years.  Requires pkg/cal.
1137    o diagnostics: add pickup functionality
1138      - off by default for backwards compatibility
1139      - current version only uses MDSIO -- MNC will be added
1140    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1141    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1142    
1143    checkpoint57d_post
1144    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1145    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1146      output from the diagnostics package
1147    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1148    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1149      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1150    o add coordinate variables to the MNC output from the diagnostics package
1151    o change MNC-flags default value: true when useMNC=TRUE
1152    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1153      the ability (off by default) to read the grid information using MNC
1154    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1155    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1156    o do snap-shot diagnostics at the middle of the time-interval (instead of
1157      at the end).
1158    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1159      new test for AIM with thSIce + slab-ocean
1160    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1161    o move state variable diagnostics to the beginning of the time step ;
1162      (note: still needs some work specially for snap-shot diagnostics)
1163      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1164    
1165    checkpoint57c_post
1166    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1167    o generate new output.txt files on faulks with g77 & the new -ieee option
1168    checkpoint57c_pre
1169    
1170    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1171      update output.txt of exp. global_ocean.90x40x15
1172    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1173      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1174    o add saltFlux(+File) forcing capability with periodicExternalForcing
1175    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1176    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1177    o improvements for the MNC output from DIAGNOSTICS:
1178      - correct handling of the unlimitied dimension
1179      - all dims now have associated coordinate variables
1180      - variables located at U, V, and Corner ("Z") points are now written
1181        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1182        *all* data points are output
1183    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1184    o added pkg/seaice/seaice_monitor.F
1185    o mdsio_readfield.F can now read files visible only to master MPI process.
1186    o pkg/seaice: some test code for ice-modified ocean stress
1187    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1188      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1189      spurious negative numbers for precipitation and humidity.  Will cause
1190      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1191    o pkg/ctrl/
1192      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1193        May be enabled via doPackDiag
1194      *  introduce z-scaling of
1195         + gradient (doZscalePack) and
1196         + control (doZscaleUnpack)
1197    o pkg/mdsio/
1198      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1199      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1200    
1201    checkpoint57b_post
1202    o simplify options in diagnostics_fill arguments (remove weird combinations)
1203    o fix MNC coordinate variables so that they now contain per-face index
1204      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1205      general, EXCH2 grids are only aligned to a "local" coordinate system
1206    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1207    o Implement instantaneous output within pkg diagnostics:
1208      setting a negative frequency in data.diagnostics produces
1209     "snap-shot" output (as opposed to time-average if freq > 0)
1210    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1211      NOTE: change ptracer diagnostics name: use 2 characters to work with
1212            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1213    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1214      becomes the coordinate variable for the 'T' dimension
1215    o add CF-style coordinate variables to MNC
1216      - just a first cut:  numbers are meaningless on the cubesphere and
1217        missing along the T axis but otherwise it works!
1218    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1219    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1220    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1221      this is based directly on what the model compute, so that the content of
1222      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1223    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1224    o clean up build options files for SunOS, in particular
1225      - remove -traditional from xmakedepend
1226      - change -xarch=v9 to -xarch=native for f77
1227      - restore use of make (not gmake)
1228      - add CC=gcc if using g77
1229    o changes per discussion of AM, JMC, & EH3 today:
1230      - move redundant "grid" variables out of "state" -- in preparation of
1231        creating proper CF-style coordinate variables and in recognition
1232        that any/all grid variables can be easily copied (eg. w/NCO) from
1233        the grid files into any of the other NetCDF files
1234      - *always* output grid variables with MDSIO (this will eventually be
1235        changed)
1236      - output MNC grid file if useMNC is true
1237    o every instance of _END_MASTER() has been found and replaced with
1238      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1239      preprocessors
1240    o re-arrange diagnostics pkg initialisation:
1241     - allow each package to extend the available diagnostics list
1242     - add some checking and fix small problems (multi-threaded, ...)
1243     - new S/R diagnostics_fill (replace fill_diagnostics):
1244       look through the short list of active diag. (instead of the long list)
1245       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1246    
1247    checkpoint57a_post
1248    o this set of changes restores TAMC compatibility
1249      tested for global_ocean.90x40x15 adjoint on trough
1250      (what a pain)
1251    
1252    checkpoint57a_pre
1253    o some modifs in tools/build_options for sunos
1254    o call ctrl_pack for ctrl at end for optimcycle=0
1255    
1256    checkpoint57
1257    o add horizontal bi-harmonic viscosity for vertical velocity
1258      - new parameter viscA4W (defaults to viscA4)
1259      - affects only non-hydrostatic code
1260      - to be done: no-slip lateral boundary conditions
1261    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1262    o implement Implicit Vertical advection for pTracers
1263    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1264      (implemented also for implicit vertical diffusion & advection)
1265    o OBCS: extend application of tracer open boundary conditions
1266      to a strip beyond the boundary of width Olx/Oly
1267    o add call monitor to TAF set of required calls (flow directives)
1268      and include in natl_box_adjoint
1269    o untangle a few ifdefs related to cost, ctrl, autodiff
1270      untangel a few ALLOW_ECCO_OPTIMIZATION
1271    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1272      (theta2, salt2 in ecco_cost_weights)
1273    
1274    checkpoint56c_post
1275    o OBCS as control variables
1276      - update ctrl_ad_diff.list, obcs_ad_diff.list
1277      - remove balance of obcs controls from default
1278      - fix index bug nobcs in ctrl_init
1279      - fix dummy fields filen in ctrl_pack
1280      - add dummy weights for obcs
1281    o lsopt: comment out fort.94 output
1282    o optim:
1283      - remove unnecessary header files
1284      - adjusted namelists
1285      - add xerbla.F to Makefile
1286    o exf:
1287      - multiple modifications of exf_check_range
1288      - unit change in exf_init_runoff from [m/year] to [m/s]
1289    o mdsio:
1290      - i/o-vector change debugLevel from debLevA to debLevB
1291    
1292    checkpoint56b_post
1293    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1294      is called from DO_THE_MODEL_IO
1295      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1296      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1297      - clean up PTRACERS_WRITE_TIMEAVE a little
1298    o add another verification experiment that tests both the cfc-pkg and
1299      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1300      reactive tendencies treated inline with regular timestepping
1301    o testreport previously did a lousy job of comparing small numbers, so
1302      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1303      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1304      testreport.
1305    o ptracers_monitor: bug fix for MPI
1306    
1307    checkpoint56a_post
1308    o GCHEM: finish reorganizating the package
1309      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1310        (introduces another 3D-array for each passive tracer, but only if
1311        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1312        gchemTendency is not needed because the timestep is done separately)
1313      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1314      - GCHEM is now---more or less cleanly---separate from PTRACERS
1315      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1316        so clear to me how that should be done in a general way.
1317    o CFC: improve formatting of output in CFC_ATMOS
1318    o PTRACERS:
1319      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1320        that ALL experiments with ptracers enable can be checked. This makes
1321        GCHEM_MONITOR obsolete.
1322      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1323        monitorFreq
1324      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1325    o add PTRACERS (PTR0[1-5]) to testreport output
1326    o exf_check_range:
1327      * default changed to .TRUE.
1328      * will check values for niter0 if debLevA, every timestep if debLevB
1329      * STOP in exf_check_range if 'out of range'
1330      * range chosen generous to allow for potential extema
1331      TBD: a version with stricter range
1332           permitted range would be runtime parameters
1333    o GMredi:
1334      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1335      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1336      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1337    o GCHEM:
1338      - move call to GCHEM_FORCING_SEP, so that it is now called before
1339        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1340      - introduced a useGCHEM runtime flag and applied it everywhere.
1341      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1342        this flag is now only visible within GCHEM-pkg routines.
1343      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1344        be replaced by a 3D array that is computed before thermodynamics; for
1345        this, the tracer ID iTracer had to be included into the parameter list
1346        of ptracers_forcing
1347      - set up forward_step to call gchem_forcing, that will replace
1348        gchem_forcing_int in ptracers_forcing
1349      - cleaning up
1350    o small cleaning of exch2: remove files that are also in eesupp/src
1351    
1352    checkpoint56
1353    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1354    o mnc: cleanup "full" files--fixes out-of-memory problem
1355    o ECCO-GODAE
1356      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1357      * fully merged and updated from SIO code
1358        windstress sign change affects
1359        - exf_inscal_[u/v]stress
1360        - sign of xx_tau[u/v] adjustments
1361        - signs in cost_scat
1362      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1363      * natl_box_adjoint updated and compressed
1364      * 2-level checkpoint switch added
1365        (tested in EXP. 1 of natl_box_adjoint)
1366      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1367    o SVD
1368      * first complete, non-hacked version for SVD calculations
1369      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1370        performed via direct access files admtlm_vector.it????
1371        (via ctrl_[un]pack)
1372      * optimcycle is used for ARPACK iteration counter
1373        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1374      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1375        and add linear transforms where necessary
1376      * controls are initial/final SST, SSS (can be extended; need to check
1377        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1378    o mdsio: filename info to both stderr, stdout
1379    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1380      from sign change
1381    
1382    checkpoint55j_post
1383    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1384      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1385    o add consistent build directories and .cvsignore files to verification
1386    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1387    o make all subroutines 30 or less characters in length for certain older
1388      compilers to work (a thorough search only turns up two routines in
1389      pkg/ptracers)
1390    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1391      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1392    
1393    checkpoint55i_post
1394    o change arrays for total vertical diffusivity (2.D if explicit,
1395      3.D if implicit) ; each ptracer uses its own background value.
1396    o added mnc/NetCDF output capability to ocn_compon_interf
1397      - added bits to verification/cpl_aim+ocn so that it can run on
1398        ITRDA and other clusters without the mpirun "-wd" option
1399    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1400      configuration
1401    o give MNC the ability to create additional files rather than
1402      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1403      - the default is just less than 2GB which is a practical limit
1404        on many systems
1405    o Compute the non-local term using either KPP vertical diffusivity (=default)
1406       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1407    
1408    checkpoint55h_post
1409    o add verification test "vermix"
1410    o remove all the *_ioinc flags and replace with the single global
1411      outputTypesInclusive flag
1412    o allow to set a vertical profile of vertical diffusivity for T & S
1413    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1414    o useMNC moved from data.mnc to data.pkg
1415    
1416    checkpoint55g_post
1417    o Renaming carbon AD experiments to comply with testreport conventions
1418    o Updating adjoint of Held-Suarez hs94.1x64x5
1419    o Fixing directives for non-ECCO forward_step, after ECCO directives
1420      have been fixed to avoid recomp. of do_oceanic_phys
1421      Works well for global_ocean.90x40x15,
1422      but recomp. issue remains for carbon
1423    o Updating adjoint output for natl_box_adjoint after
1424      pkg/ecco has been modified (see taga c55d_post)
1425    
1426    checkpoint55f_post
1427    o rename to timeave_init_fixed
1428    
1429    checkpoint55e_post
1430    o some delicate re-shuffle of store directives to avoid one
1431      extra call of do_oceanic_physics
1432      affects ecco_the_main_loop.F, do_oceanic_physics.F
1433      checkpoint_lev1_directives.h
1434    o NB: this may break global_ocean adjoint temporarily,
1435      but it is clear how to fix it. Will do later, need this now.
1436    
1437    checkpoint55d_post
1438    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1439    o ecco_cost_weights is modified to 1x1 runs
1440    o modifs to allow observations to be read in as
1441      single file or yearly files
1442    o enable to read exf forcing fields as either
1443      single file or yearly files (flag useExfYearlyFields)
1444    checkpoint55d_pre
1445    
1446    o switch between 2-level and 3-level checkpointing
1447    o add ability of MNC to write local and "partial" (eg. 2D slices where
1448      the full 3D field is never actually stored) arrays to NetCDF files
1449      with the correct (that is, the complete multi-dimensional) set of
1450      array indicies
1451      - used in mom_vecinv() to write the diagFreq output
1452      - tested (demonstrated) in verification/aim.5l_cs
1453    o further mnc-ification
1454      - add verification/lab_sea to the list with mnc setups
1455      - fix undefined mnc v-names in cd_code
1456      - add kpp to mnc output (both snapshot and timeave)
1457    o non-hydrostatic code
1458      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1459        in calc_gw.F
1460      - defaults to viscAh
1461      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1462        friction or Leith) in non-hydrostatic mode, as long as there is
1463        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1464    o pkg/cost
1465      extend simple cost functions to treat time mean quantities
1466      (T,U,V) via cost_accumulate_state from cost_tile
1467    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1468        be 2 times larger than the minimum size the advection scheme requires.
1469        now get a perfect conservation of salt in advect_cs test-exp (updated)
1470    o GGL90 (Gaspar's TKE mixed layer)
1471      - add horizontal diffusion of TKE, requires exchanges in
1472        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1473        default. In OPA there is no horizontal diffusion of TKE but the
1474        mixing coefficients are computed from a horizontal average of TKE of
1475        6 points or so. I think that diffusion has a little more physical
1476        justification.
1477      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1478        was in vain)
1479      - mask tke-variable in ggl90_init
1480    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1481    o fix biharmonic diffusion on CS-grid.
1482    o more obcs stuff
1483      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1484        for reading boundary values. This routine is called from
1485        obcs_prescribe_read
1486      - updated obcs_check
1487      - changed sponge layer relaxation parameter units for days to seconds
1488      - turned off sponge layer by default
1489      - changed argument list of OBCS_CALC to myTime+deltaTclock
1490      - fixed about 35 bugs in obcs_external_fields_load
1491    
1492    checkpoint55c_post
1493    o obcs stuff
1494      - new runtime flags useOBCSprescribe, useOBCSbalance
1495      - re-arranged obcs_calc
1496      - moved exf_getobcs to obcs_prescibe_read
1497        obcs_prescibe_read is called after ORLANSKI stuff
1498        and independent of it (executable can contain all).
1499      - updated obcs_check
1500      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1501        These may be necessary only if tangential velocities are
1502        prescribed at OB, not sure, needs testing.
1503    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1504      which simplifies the calls and passes the ifc check-bounds test
1505    
1506    checkpoint55b_post
1507    o add a 2D scalar, Z location, exchange_2 routine.
1508    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1509      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1510      affects advect_cs results (for the wrong reason): update output.txt
1511    o use a more standard discretization for biharmonic viscosity ;
1512     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1513      affects results of dome set-up: update output.txt
1514    o fix gad_advection.F (CubedSphere part), back to version 1.23
1515    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1516    
1517    checkpoint55a_post
1518    o merged code to
1519      * prescribe/read time-dependent open boundaries
1520        (works in conjunction with exf, cal)
1521      * sponge layer code for open boundaries
1522      * each boundary N/S/E/W now has its own CPP option
1523        (healthy for the adjoint)
1524    
1525    checkpoint55
1526    o up-to-date adjoint of previous breaks
1527      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1528      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1529      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1530      - carbon: * remove tr1-related adjoint verification
1531                * add ptracer as control variable
1532    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1533      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1534    
1535    checkpoint54f_post
1536    o in verification/carbin/ remove experiment related to
1537      ALLOW_PASSIVE_TRACER (array tr1 etc)
1538      code_ad/ input_ad/ results_ad
1539    
1540    o add two new packages
1541      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1542        + subject to optimization (memory)
1543      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1544        + subject to reordering (many GOTOs in the original code)
1545        + so far opps is called for every (i,j) point, and then operates in
1546          the vertical; one may want to reorder the scheme in order operate in
1547          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1548          fields)
1549    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1550      - all verification tests compile and run with linux_ia32_g77
1551      - defaults are compatible with current input files--nothing
1552        should change if you were not previously using MNC
1553      - MNC output has been added in numerous places (eg. timeave)
1554        but there are still a few writes not yet do-able with MNC
1555        (this is in progress)
1556      - flags now allow for either/or/both use of MDSIO and MNC and
1557        documentation will soon follow
1558      - numerous small formatting cleanups for ProTeX
1559    o add version info (via BUILD_INFO.h) to MNC and stdout
1560    
1561    checkpoint54e_post
1562    o add two new packages
1563      - pp81 (Packanowski and Philander, 1981), Richardson number and
1564        stratification dependent mixing
1565      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1566      - these scheme operate in a similar manner as KPP (without ghat, of
1567        course), however there is only one diffusivity that is used for both
1568        temperature and salinity (and passive tracers)ç
1569    o add offline package
1570    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1571      provided by Stephanie Dutkiewicz
1572    o genmake2: add ability to search for C compilers and cleanup test output
1573      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1574    
1575    checkpoint54d_post
1576    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1577    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1578      leading to additional shift by 5 days each year of integration
1579       (i.e. leading to considerable offset over the years)
1580    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1581    o start with no AB and no initial filtering (staggerTimeStep):
1582      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1583    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1584      (external loading & cpl import/export stay in forward_step.F)
1585    o update coupling interface to work with new staggerTimeStep
1586    o change MDSIO ptracers_pickup.
1587    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1588    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1589    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1590    
1591    checkpoint54c_post
1592    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1593      this affects (truncation error) output.txt of test-exp:
1594       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1595    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1596    o change Qnet to always be the net heat flux, (+upward).
1597      affects (truncation error) output of natl_box exp.: updated
1598    o define the max number of passive tracers in PTRACERS_SIZE.h
1599    o start to test mnc routinely in exp0
1600    o add sea-ice loading (sIceLoad) as a new forcing field.
1601    
1602    checkpoint54b_post
1603    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1604       impressive on Altix and Opteron systems)
1605    o diagnostics can now write NetCDF files through the mnc package
1606    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1607    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1608    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1609      affects (truncation error) output of lab_sea & natl_box exp.: updated
1610    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1611    
1612    checkpoint54a_post
1613    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1614    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1615    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1616    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1617      + internal_wave (shift in writing cg2d_ini_res)
1618    checkpoint54a_pre
1619    
1620    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1621      - modified verification/lab_sea and natl_box_adjoint accordingly
1622    
1623    checkpoint54
1624    checkpoint53g_post
1625    o prepare splitting of thermodynamics: store convect.counter in common block
1626    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1627      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1628    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1629    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1630    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1631    o restore adjointability
1632    
1633    checkpoint53f_post
1634    o modifications that affect AIM experiment results (update output.txt):
1635      - no advection of S at top interface Nr (pkg/generic_advdiff)
1636      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1637    o AIM pkg:
1638      - include stability function into surf.Flux derivative relative to Tsurf
1639      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1640    
1641    checkpoint53e_post
1642    o merged cylindrical coord configuration
1643    o added rotating_tank experiment
1644    checkpoint53e_pre
1645    
1646    checkpoint53d_post
1647    o faulks upgraded: re-generate output.txt that have changed:
1648       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1649    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1650    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1651    o added Sadourny discretization of Coriolis
1652      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1653      - re-enabled use of omega3 (useAbsVorticity)
1654    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1655      vector-invariant equations
1656      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1657    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1658      hopefully without new bugs
1659      - still to do: biharmonic friction for non-hydrostatic w
1660    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1661    o regenerated output for global_ocean_ebm (using -ieee)
1662    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1663      of mom_common/
1664      - simple re-arrangement of instructions within computing loop
1665    checkpoint53d_pre
1666    
1667    checkpoint53c_post
1668    o new version of coupler for AIM+thSIce and Ocean models
1669     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1670     - land: change Evaporation of snow
1671     - aim with thSIce: fix bug in snow-precip.
1672    o changes to calc_gw.F
1673     - bug fix for w^2 term near the bottom boundary
1674     - (hopefully) improve the lateral slip boundary condtions for use with
1675        partial/looped cells
1676      - because the bug fix changes two verification experiments anyway (exp5
1677        and plume on slope), change the lateral boundary condition from half slip
1678        to the value of no_slip_sides
1679    o ebm package wasnt quite up to the parallel task. Fixed that.
1680    o Adjoint of EBM package + verification
1681      * TLM OK
1682      * ADM not sufficient accuracy yet (needs further testing)
1683    
1684    checkpoint53b_post
1685    o Commiting new energy balance model to repository
1686      * package is pkg/ebm
1687      * verif. is verification/global_ocean_ebm
1688      * references are in ebm_driver.F
1689    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1690    C        Global thermohaline circulation. Part I:
1691    C        Sensitivity to atmospheric moisture transport.
1692    C        J. Climate 12(1), 71-82
1693    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1694    C        Global thermohaline circulation. Part II:
1695    C        Sensitivity with interactive transport.
1696    C        J. Climate 12(1), 83-91
1697    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1698    C        Destabilization of the thermohaline circulation
1699    C        by atmospheric eddy transports.
1700    C        J. Climate 7(12), 1870-1882
1701    o Will need long integration testing.
1702    checkpoint53b_pre
1703    
1704    o created pkg/mom_common in preparation for variable viscosity code
1705    o renamed and split ini_mnc_io
1706    o pkg/land: only liquid water can diffuse or run-off
1707    o AIM using land: soil wetness availability account for snow
1708    o added printMapIncludesZeros to EEPARMS namelist
1709    
1710    checkpoint53a_post
1711    o restore TAMC compatiility for exf_constants.h
1712      (no usage of _d in .h)
1713    o Additional storing in KPP in an attempt to fix
1714      TAMC problem with adjoint of KPP code.
1715      (no success...)
1716      Identical code works fine with TAF.
1717    o Fixed verification/natl_box_adjoint experiments.
1718      Initial conditions for Experiments 4 and 5 are now
1719      set to "SEAICE_initialHEFF=0", which is more reasonable,
1720      and hence gives results closer to that of Experiment 2.
1721      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1722    
1723    checkpoint53
1724    o stable checkpoint with up to date adjoint
1725      TLM tests only run for 1st grdchk at the moment. Its unclear if
1726      this is a code problem or a problem with resetting code for g_
1727      variables that is being autogenerated wrong.
1728      Otherwise:
1729       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1730       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1731         are both still in chaos following their security messes.
1732    
1733    checkpoint52n_post
1734    o various build (mostly genmake2) changes including:
1735      - ability to build/run more easily within Cygwin and MacOS X
1736      - more complicated Makefiles with a stronger dependence on Gnu Make
1737    o pkg/seaice modifications
1738      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1739        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1740        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1741      - changed proxy for geostrophic velocity and updated
1742        verification/lab_sea/results/* accordingly
1743      - removed ADI dynamic solver from pkg/seaice
1744      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1745        they caused a segmentation fault under certain circumstances
1746      - removed unused field WATR
1747    o bug fix in exf-package:
1748      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1749         now reflect that.
1750    o small fixes in the cal-package:
1751      - set reference date to first of January for the 'model'-calendar
1752      - failing of cal_CheckDate in cal_FullDate now actually results in a
1753        warning
1754    o small modifications in exf-package to increase flexibility:
1755      - change climtempfreeze from a constant to a runtime parameter that
1756        is specified in data.exf_clim (default = -1.9)
1757      - introduce runtime parameter windstressmax (default = 2.0) that is
1758        specified in data.exf
1759    o fix in pkg/thsice:
1760      - update Evap (Tsf changes) to be consistent with Latent heat flux
1761      - maintain snow precipitation unchanged (even if Tsf >=0).
1762     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1763    
1764    checkpoint52m_post
1765    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1766      this does not change any of the results, because myIter=0 in swfrac always
1767      lead to jwtype=2 (the default anyway), but the call makes little sense
1768      as a default
1769    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1770    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1771      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1772    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1773    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1774    o extending useSingleCpuIO option to work with new exch2 I/O format
1775      - old-style, missing-tile I/O is still accessible by defining CPP
1776        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1777    o monitor package can write to NetCDF files and/or STDOUT
1778    o fix re-definition bug in MNC_GRID_INIT_ALL()
1779    o doc/api_reference added
1780      - a framework for building an API Reference Manual using all
1781        the "protex" comments embedded in the code
1782      - see pkg/generic_advdiff, pkg/mnc for examples
1783    o MNC:
1784      - make myThid the last argument for all subroutines
1785      - new default for the grid files: NO halos
1786      - add useMNC and other run-time flags
1787      - separate per-file-group handling of the unlimited dimension
1788      - early initialization of MNC w/ flags read at the eeboot stage
1789        and lookup tables set in initialize_fixed
1790      - write all MNC output to a freshly-created directory
1791    o thermodynamics sea-ice (thsice) is now tested with testreport.
1792    o test exp. advect_cs: use the standard cs32 grid ; update output.
1793    o Added functionality to grdchk:
1794      pick global i,j,k position (or nearest wet) where to perform check.
1795    
1796    checkpoint52l_post
1797    o new land formulation:
1798      a) use ground enthalpy as prognostic variable to ensure exact
1799         energy conservation.
1800      b) account for water temperature and for latent heat of freezing
1801         in all processes (rain, run-off, ground storage)
1802      c) compute surface and ground temperature implicitly.
1803    o aim_v23 modification for new land model:
1804      a) Treat separately land / ocean / sea-ice surface fluxes
1805         to allow implicit computation of land & sea-ice surface temp.
1806      b) add snow precipitation.
1807    checkpoint52l_pre
1808    
1809    o fix problem (when 1 tile is empty) in min/max monitor.
1810    o fix bug in timeAve (u,vZetatave in common block)
1811    o no restoring terms under ice for pkg/seaice
1812    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1813    o bug fix for pkg/seaice pickups
1814    o change MNC call locations and add coordinate attributes
1815    o mask vorticity at the corner ; affects global_ocean.cs output
1816    o fix ini_curvilinear_grid ; test CS experiments with mpi
1817    o aim.5l_cs: modify sea-ice fraction input file ; update output
1818    o exf: Adding simple range check routine for exf fields after read
1819    
1820    checkpoint52k_post
1821    o removed top-level directory "diags"
1822      - we migrated these functions to pkg/timeave a long time ago
1823    o fixed bug introduced in pkg/monitor
1824    o accuracy ctrlprec = 32 insuffient for gradient checks using
1825      averaged fields (I/O via cost_averages)
1826      -> use ctrl.h in active_file*.F to control I/O precision.
1827    o paramter list of CALL ADTHE_MAIN_LOOP
1828    o added initial do_the_model_io to ecco
1829    o set all ...Freq to zero after cost_final
1830      taveFreq, dumpFreq, pChkptFreq
1831    o MAIN and ECCO differentiability restored
1832    
1833    checkpoint52j_post
1834    o fix nchklev in tamc.h for global_ocean...
1835    o Bringing flow and store directives up-to-date
1836    o Really weird thing!
1837      call do_the_model_io from the_main_loop with parameters
1838      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1839      TAF places a faulty re-call of initialise_varia
1840      after cost_final call which should not be there!
1841    checkpoint52j_pre
1842    
1843    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1844      error messages
1845    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1846    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1847      debug output
1848    o modfied mdsio_writefield.F to handle non-global files under exch2
1849    o update AIM Cubed-Sphere exp (aim.5l_cs):
1850      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1851    o update AIM Equatorial Channel exp:
1852      use standard aim_v23 pkg and change the SST fields to be more realistic.
1853    o globalFile now works with exch2
1854    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1855      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1856    o limit timeave output for hi-res integrations
1857    
1858    checkpoint52i_post
1859    o removed CPP_EEOPTIONS.h from verification/*/code
1860    o updated the tiling for global_ocean_pressure
1861    checkpoint52i_pre
1862    
1863    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1864      the old pkg/aim).
1865    
1866    checkpoint52h_pre
1867    o shortened offending lines in exch2_send_rx?.template
1868    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1869    o genmake2: add build & execute test for NetCDF code
1870    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1871      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1872    o added useSingleCPUIO flag to monitor.F and mon_out.F
1873    o added temporary hack for sea-ice dynamics on the cube:
1874      metric terms are ignored and it is assumed that
1875      there is no sea-ice on cube faces 1, 2, 4, and 5.
1876    
1877    checkpoint52f_post
1878    o added exch2 cube routines to pkg/exch2
1879    o modified hs94.cs-32x32x5 to use it
1880    o added new grid files to hs94.cs-32x32x5
1881    checkpoint52f_pre
1882    
1883    checkpoint52e_post
1884    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1885      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1886    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1887      to work with implicit vertical advection and AB ;
1888    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1889    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1890     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1891    checkpoint52e_pre
1892    
1893    o fix bug in impldiff when Nr=1 or Nr=2.
1894  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1895  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1896  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2

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