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revision 1.232 by jmc, Wed Dec 31 20:29:54 2003 UTC revision 1.795 by mlosch, Fri Apr 20 18:30:39 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: fix bug in evp solver, while doing that
8      - change (improve?) discretization of stress computations for both
9        cgrid-lsr and evp solver
10      - add a new routine to compute strain rates
11      - changes lab_sea results
12    o pkg/kpp: add code to have mixing in shelf ice caverns
13    
14    checkpoint59
15    o pkg/exf:
16      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
17        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
18      - move exf header files from lower_case.h to UPPER_CASE.h ;
19        add missing cvs Header & Name
20      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
21      - add namelist param. selectStressGridPosition, exf_monFreq
22      - retire many _CLIM routines, and remove data.exf_clim
23        + params moved to data.exf
24        + climsst, climsss now handled by exf_set_gen, i.e.
25          climss?period=0 refers to constant field,
26          climss?period=-12 to monthly forcing
27      - split up namelists in data.exf
28    o pkg/seaice:
29      - remove seaice_exch and seaice_exch_uv
30      - remove superfluous exchange of theta
31      - add myThid to seaice_budget_ocean/ice
32      - add new interface for atmospheric wind forcing (C-grid only)
33        + new routine
34        + two new field (taux, tauy for stress over ice)
35        + removed one global field (DAIRN) for C-grid case only
36    o pkg/thsise
37      - 2nd set of modifs for thsice adjoint in conjunction with exf
38    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
39    
40    checkpoint58y_post
41    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
42      vertical diffusivity, similar to that in MOM4; turned on using
43      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
44      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
45    o Added capability for 3D specification of background vertical diffusion
46      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
47      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
48      "data" file that contains the 3D vertical diffusivity coefficients.
49    o ice dynamics (pkg/seaice) with thsice thermodynamics:
50      - add code within pkg thsice to advect & diffuse sea-ice fields
51      similar to (and will replace) what has been added in  seaice_advdiff.F,
52      but: - conserving Mass, Heat & Salt.
53           - better when using non-linear advection scheme (not yet fully tested)
54           - can also be used in atmospheric set-up (for now, only the diffusion).
55    
56    checkpoint58x_post
57    o IO option for global-file compact format:
58      - add options when generating topology (utils/exch2/matlab-topology-generator)
59      - add I/O capability (pkg/mdsio).
60      - adapt utils/matlab/rdmds.m to read this format.
61      for now long-line format not yet supported by pkg/mdsio (& exch2).
62    o shelfice: add a few diagnostics
63    
64    checkpoint58w_post
65    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
66      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
67      (and replace horiVertRatio in NH code).
68      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
69                         and tutorial_plume_on_slope (sensitive to truncation)
70    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
71      directly to drive seaice model (C-grid only)
72    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
73     - reintroduce computation of wind from stress,
74     - compute tau (in exf_bulkformulae.F) from windstress averaged to
75       mass points to avoid tau = 0
76     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
77    o rdmnc.m: make it work with "global" files created with gluemnc
78    o rdmnc.m : some improvements in dealing with singleton dimension
79      (tested on all testreport mnc output files).
80    o genmake2: disable pkg/profiles if netcdf test fails.
81    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
82    o move call to cal_readparms up to make calendar parameters/variable available
83      to all packages
84    
85    checkpoint58v_post
86    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
87      useDynP_inEos_Zc tested.
88    o pkg/exf: changes to properly interpolate/mask/scale initial fields
89    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
90      and portions thereof.  See read_cs.txt for description and examples.
91    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
92      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
93      following the great-circle arc between those 2 points.
94    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
95      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
96    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
97     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
98     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
99     - still needs work (not working with some options ; efficiency to improve)
100       and serious testing.
101     - use this scheme for temperature & salinity in 2 advection test exp.:
102       advect_xy & advect_xz, respectively.
103    
104    checkpoint58u_post
105    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
106    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
107    o testreport: add option "-skipdir" to skip some test.
108    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
109      momentum calculation.
110    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
111    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
112      remove checkpoint.F and the_correction_step.F (no longer used);
113      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
114    o add option (linFSConserveTr) to correct for tracer source/sink due to
115      Linear Free surface
116    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
117    o pkg/thsice: fix reading mnc-pickups
118    
119    checkpoint58t_post
120    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
121    o pkg/mdsio:
122     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
123       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
124       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
125     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
126     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
127       either MDS_READ_FIELD or MDS_WRITE_FIELD )
128     - new S/R (to replace MDSWRITEMETA), which allows to write more
129       informations (variable names, time ...) to meta files.
130     - modify rdmds.m to give back the meta file content.
131    o pkg/diagnostics: change vertical interpolation to be safer, and more
132       flexible (define p-levels to interpolate to in data.diagnostics);
133      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
134       diagnostic pointer.
135    o pkg/seaice: more cleaning up of seaice_growth, added many comments
136    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
137    o fix multi-category seaice:
138     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
139       SEAICE_MULTICATEGORY
140     - fix short wave heat flux
141    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
142       and allow to use EVP solver. Change forward lab_sea: test both EVP
143       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
144    o Initial check-in of lab_sea adjoint
145      (very similar to natl_box_adjoint/code_seaice)
146      * used C-grid and EVP solver
147      * used KPP, GM/Redi
148      * uses inAdExact=.TRUE.
149      * gradient checks fail for both ADM and TLM
150        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
151        f.d. gradients actually seem more problematic than ADM, TLM gradients;
152        issue is related to forward mismatch between g77 an ifort
153    o pkg/seaice: overhaul of thermodynamics
154     - growth.F and groatb.F are replaced by new routine seaice_growth.F
155     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
156     - move a few global fields out of SEAICE.h into seaice_growth.F and
157       make them 2D (FICE/QNETO/ ...)
158     - remove FO (it is the same as QNETO)
159     - introduce a few local fields to avoid modifying external fields such
160       as atemp, etc.
161    
162    checkpoint58s_post
163    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
164      changed exf_set_gen.F so that
165        genperiod=0 means input file is one time-constant field and
166        genperiod=-12 means input file contains 12 monthly means
167    o CG2D: use pre-computed solver main-diagonal (stored in common block);
168      this affects truncation error ; generate new output file for exp. which
169      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
170        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
171        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
172        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
173        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
174        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
175    o start implementation of deep-atmosphere and anelastic formulation
176    o verification: remove 2nd copy of input files and use script "prepare_run"
177      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
178    o mom_common/vecinv/fluxform: fix a few initialisation isssues
179    o profiles: fix for multithreaded case
180    
181    o diagnostics: rename few diags:
182      s/'PRESSURE'/'RCENTER '/g
183      s/'TICE    '/'oceFreez'/g
184      s/'TAUX    '/'oceTAUX '/g
185      s/'TAUY    '/'oceTAUY '/g
186      s/'SWFLUX  '/'oceQsw  '/g
187      s/DIFx/DFxE/g
188      s/DIFy/DFyE/g
189      and add few ocean-forcing diagnostics:
190      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
191    o modifications to pkg/seaice/growth.F and budget.F, which change results of
192      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
193      as actual snow thickness.  It now refers everywhere to effective snow
194      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
195    
196    checkpoint58r_post
197    o modifications to pkg/seaice/growth.F, which change results of
198      lab_sea experiment: fixes pertain to melting snow over open water, to
199      masking EVAP under sea ice, and to using the correct AREA variable for
200      computations of EVAP, PRECIP, HSNOW, and GHEFF
201    o add ability to read bathy, salt, and theta using MNC (off by def)
202    o add flooding algorithm and advection of HSNOW for pkg/seaice;
203      both are turned off by default and do no change any results
204    o seaice advection with pkg/thsice: a step toward the use of non-linear
205      advection scheme, but #ifdef or commented out for now (requires more EXCH).
206    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
207      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
208      in natl_box (affects results @ truncation level: update output.txt)
209    o multi-threading and IO:
210      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
211      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
212        (needed to work with SingleCpuIO): tested in all verif. exp.
213    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
214      affects the results (but none of the verification test uses this scheme).
215    o Adding some pkg/diagnostics capability to pkg/seaice
216      (will certainly be subject to changes)
217    o ctrl: adding new control variables:
218      lwflux, lwdown, evap, snowprecip, apressure, runoff
219    
220    checkpoint58q_post
221    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
222      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
223      high_res_cube configuration by 4% on Columbia.
224    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
225      add (in global_with_exf/code) a version of EXF_INTERP_READ without
226      dynamical allocation (seems to work in multi-threaded).
227    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
228      single CPU io) so that TAF does not have to see EESUPPORT.h
229    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
230    
231    checkpoint58p_post
232    o obcs: stop if obcs is used with useCDscheme = .true.
233    o shelfice:
234     - fix a sign error so that no slip at shelfice interface works
235     - remove stop for combination non-hydrostatic code and shelfice. That does
236       not mean, that the results are correct, but at least they are numerically
237       stable
238    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
239    o added adjoint exch routined for all exch*3d* routines
240      and updated flow directives
241    
242    checkpoint58o_post
243    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
244      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
245    o change controling S/R for writing pickup file (new S/R do_write_pickup)
246      and clean-up reading/writing of pickup files.
247    o fix local version of read/write pickup (NH part) in rotating_tank/code
248    o simplify EXCH interface:
249     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
250     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
251    o added the regrid package
252    o shelfice:
253     - add a simple boundary layer scheme to reduce noise
254     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
255    
256    checkpoint58n_post
257    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
258       local variable (not in common block).
259    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
260      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
261      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
262        to work with SingleCpuIO.
263    o add "_d 0" to real constant of pkg/cfc subroutines ;
264       update exp. cfc_exemple & tutorial_cfc_offline output files.
265    o multi-threading and IO:
266      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
267        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
268      - barrier before and after reading.
269      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
270      - avoid using MDS_WRITELOCAL for LAND pkg output.
271      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
272        common-block variables ; Allows multi-threading with master-thread IO.
273    o change default MAX_NO_THREADS from 32 to 4 ;
274      and stop cleanly when MAX_NO_THREADS is too small.
275    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
276    
277    checkpoint58m_post
278    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
279       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
280    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
281       keep global_ocean.90x40x15 (for AD testing) with former secondary test
282       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
283    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
284        add MITgcm_tutorials (= code + all the tutorials)
285    o ecco, option to compute cost for total ssh (mean+anom)
286    o consistent with addition of ptracer and ssh in pkg/profiles
287    o profiles: adding ptracer and ssh
288    o testreport: change multi-test output-file name
289      (from output.txt.{name} to output.{name}.txt)
290    o profiles: now ok for mutli-tiles case
291    o seaice: add 4 parameters for different advection schemes for area,
292      (effective) seaice thickness, enthalphy, and snow height. Their default
293      is the standard parameter SEAICEadvScheme
294    o calc_gw:
295     - add cosFacU in zonal viscous flux (harmonic.visc.).
296     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
297       of tutorial_plume_on_slope.
298    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
299    o calc_gw: true flux-form, account for horizontal grid spacing.
300      update rotating_tank results, but not plume_on_slope (affected at
301      truncation level, 11 digits).
302    
303    checkpoint58l_post
304    o calc_gw:
305     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
306     - remove side-drag for now (need to fix it); update plume_on_slope results.
307     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
308    o commit code to make SST/SSS weights spatially variable
309      (based on either variable in-situ or variable initial T/S weights)
310    o pkg/ecco:
311      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
312        now based on horizontally varying weights wthetaLev, wsaltLev
313      * cost_averagesflags now returns year indices in addition to day, month
314      * sflux balance is performed on annual basis
315        (sflxumm, sfluxmm2, bal_sfluxmm)
316      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
317        including separate counting and multipliers
318    o pkg/rbcs
319      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
320    
321    checkpoint58k_post
322    o testreport:
323     - always build in dir. "build" (if not there, mkdir build instead of building
324       & running in input)
325     - run in dir run (if it exists), in build otherwise.
326     - call prepare_run (if input/prepare_run exists)
327     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
328    o pkg/exf modifications to interpolation and rotation routines for more
329       reasonable treatment of North Pole singularity: for tracers North Pole
330       value is set to northernmost zonal-mean value, for zonal velocity it is
331       set to zero, and for meridional velocity it is set to northernmost value.
332    o pkg/exf/exf_check_range.F
333     - add tile index to diagnostics and move stop statement to the very
334       end of the routine.
335    o pkg/diagnostics: (diagnostics_main_init.F)
336      define title of isomorphic variables according to the current config.
337    o pkg/thsice with pkg/seaice dynamics:
338    - fix domain of computation (interior only, required for exf) and do exchanges
339    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
340    o towards a standard way of dealing with multi-threading in MONITOR
341      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
342    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
343       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
344    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
345    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
346    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
347       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
348    o tracer advection:
349     - clean-up and simplify calc_common_factors.F
350     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
351       advection subroutine (but still not used within DST advection S/R)
352    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
353    
354    checkpoint58j_post
355    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
356      from file (collects calls previously in FORWARD_STEP)
357    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
358    o adjoint store dir. adjusted accordingly
359    o genmake2
360      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
361    
362    checkpoint58i_post
363    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
364      on wind stress (SEAICEstressFactor defaults to 1.)
365    o Total number of Timers is finite (<=40): comment out 2 non-essential one
366      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
367    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
368      on CS-grid: no longer loosing mass.
369    o exf & curvilinear-grid: no longer modify longitude xC & xG.
370    o pkg/ggl90: fix sloppy output and fix a bug
371    o pkg/seaice: added SEAICEuseEVPpickup parameter
372      - Set to false in order to start EVP solver with
373        non-EVP pickup files when using SEAICEuseEVP
374      - fix sign error in diffusion in seaice_calc_rhs
375    
376    checkpoint58h_post
377    * Modifications for bottom topography control
378      o replace hFacC by _hFacC at various places
379      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
380      o add non-self-adjoint cg2d_nsa
381      o update autodiff support routines
382      o re-initialise hfac after ctrl_depth_ini
383      o works for 5x5 box, doesnt work for global_ocean.90x40x15
384    * Adding verification for 5x5 box (4-layer) bottom topography control
385    
386    checkpoint58g_post
387    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
388       used for mean seasonal cycle, mean diurnal cycle); add an example
389       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
390    o pkg/ggl90:
391      - add parameter (minimum surface kinetic energy)
392      - fix bug (avoiding division by zero)
393    o couple pkg/thsice to pkg/seaice:
394      - modify advection in seaice to accomodate new scalar fields to be advected
395      - only muliDimAdection scheme work with seaice/thsice
396      - mapping of thsice-variables to seaice-variables, back and forth
397      - does not break the verification experiments, but does not give the
398        desired results either
399    o pkg/seaice
400      - make (default) second order advection a bit less confusing?
401    
402    checkpoint58f_post
403    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
404      to pkg/seaice):
405      - new routines thsice_map_exf and thsice_get_exf provide the interface
406      - add an additional formal parameter to thsice_solve4temp
407    o pkg/exf:
408      - add new fields wspeed, snowprecip (to be able to couple to thsice)
409      - correct Stefan-Boltzmann constant
410      - new parameter for longwave surface emittance
411      - separate some stuff from exf_bulkformulae into new routines  
412        exf_radiation, exf_wind
413      - add new parameters and constants: longwave emissivity for ocean, ice
414        and snow, evaporation parameters over ice
415      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
416        either wind from stress or stress from wind
417    o pkg/thSIce:
418    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
419    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
420       and THSICE_CALC_THICKN
421    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
422    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
423      to make debugging easier.
424    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
425    o pkg/bulk_force:
426      - clean-up comments and parameters ;
427      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
428    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
429      generate new output for test-experiment: aim.5l_cs.thSI
430    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
431      testreport accordingly
432    
433    checkpoint58e_post
434    o SEAICE_CGRID adjoint done
435    o R_STAR adjoint implemented.
436      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
437      * need to sort out init. of h0facc, etc.
438    o Make pkg/profile fully independent of ecco,cost, etc. stuff
439      to be able to use it in pure forward.
440    
441    checkpoint58d_post
442    o upgrade simple test-experiment to tutorial example:
443     step.1: duplicate the experiment and (step.2) will remove the old copy.
444      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
445      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
446      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
447      tutorial_global_oce_biogeo    <- copy of dic_example
448      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
449      tutorial_plume_on_slope       <- copy of plume_on_slope
450      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
451      tutorial_global_oce_optim     <- empty for now (David ?)
452      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
453     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
454    o correct a sign problem in cost_scat.F
455    o obcs and ptracers: fix boundary conditions for advections schemes
456      with larger stencil
457    o thsice adjoint: start
458    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
459      completeness
460    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
461      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
462    o ptracers adjoint:
463      * avoid extensive recomputatations
464      * fix missing re-init. of gptr (missed by TAF)
465    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
466      me to turn off the excessive output to STDOUT that this package produces
467    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
468      and add those terms in Vector-Invariant formulation.
469    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
470      if the control period (xx_hfluxperiod etc) is 0
471    o in profiles pkg, clean routines and fix details
472    o in ecco pkg, reading ssh data:
473      fix problem in case the model does not start at iter0=0
474    o fix mnc-pickup/restart for ptracers
475    o new package prifiles:
476      code to compute profile-based cost by Gael Forget
477      (modifs in ecco, ctrl, autodiff)
478    o Benign bug fix in initialization (spotted by M. Mazloff) of
479      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
480    
481    checkpoint58c_post
482    o adjoint: finish NLFS adjoint and provide reference output in
483      verification/global_ocean.90x40x15/results_ad_nlfs
484    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
485      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
486      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
487      with SEAICE_CGRID defined.
488    o move calendarDumps from "data" to "data.cal" and clean-up the code
489      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
490    o add useEXF & useCAL flags (for now, set in hard-coded way)
491    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
492      (were missing in NH mode, and wrong in quasihydrostatic mode).
493      waiting for Chris updated version of calc_gw to add those CALLs.
494    o fix bug in quasihydrostatic S/R ;
495      add a test for this option: global_ocean.90x40x15.qshyd
496    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
497      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
498    o add on/off flag useOffLine for package OFFLINE
499    o seaice:
500      - modify advection so that it works also on the C-grid
501      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
502        problem in multi-tile runs with C-grid
503      - add flags for clipping ice velocities and/or masking solver forcing
504      - fix drag (ocean on ice) formulation and a bug that caused noise in the
505        C-grid solver
506      - added a few comments to seaice_diffusion.F
507      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
508        are now exclusive)
509      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
510        required re-ordering the code a little:
511       + make DAIRN global variable (defined in SEAICE)
512       + move computation of the viscosities eta and zeta into a new separate
513         routine (because I need to recompute them in seaice_ocean_stress.F)
514    
515    checkpoint58b_post
516    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
517      update output.txt of exp. aim.5l_cs.thSI
518    o various mnc cleanups and improvements:
519      + shrink lookup tables by factor of ~4
520      + better error reporting when running out of lookup space
521      + able to handle longer path/file names (up to 500 chars)
522    o adjoint:
523      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
524      - TBD: "hidden" mom_vecinv recomp. in dynamics
525    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
526     (allow to differentiate between forcing components using new integer flags:
527      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
528     and add new flag to put Dissipation tendency out of Adams-Bashforth.
529    o ecco
530      - enable trend removal from SSH anomaly obs.
531    o adjoint
532      - a fix for PmEpR when #undef EXACT_CONSERV
533      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
534      - try to fix "hidden" recomp. in forward_step for NLFS
535        (NLFS seems broken sometimes after I checked it in)
536    o seaice:
537     - add c-grid version of the dynamic solver:
538       + three new routines that are the c-grid substitute lsr, dynsolver
539         and ostres
540       + put a few fields that were local to dynsolver into global common
541         blocks, so that I can move the computation of stresses etc into
542         seaice_lsr (saves coding but may break the adjoint).
543     - replace more hardwired parameters by runtime parameters
544     - add ice masks that mask the rhs of the implicit solvers where there
545       is no ice (commented out in seaice_dynsolver, because i am not sure
546       if this works properly), eventually this should replace the clipping
547       of ice velocities in seaice_dynsolver to +/-40cm/s.
548    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
549      include it only where its needed
550    o move balancing of fluxes before the call of external_forcing_surf
551    o seaice:
552      - correct units of turning angles (now they are really in degrees)
553      - move computation of GWATX/Y out of main routine into dynsolver
554      - initialize GWATX/Y in seaice_init
555    o Apply mask on Fresh-Water flux (needed for SSH forcing).
556      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
557    o seaice: add runtime flags for turning angles (default to zero)
558    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
559      and trend from exf forcing and ctrl control adjustments
560    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
561      (since checkpoint57x_post)
562    o change the default rotation period to 86164.s = the Earth rotation
563    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
564      and based on a reference stratification. Tested within hs94.cs-32x32x5.
565    o seaice advection: add code for choosing between the default (2nd order
566      central differences) and multiDim advection schemes provided by
567      pkg/generic_advdiff
568    o seaice:
569      - removed all references to SEAICE_GRID.h fields from
570        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
571        (cubed-sphere configuration will change a little)
572      - grid computations in seaice_init are obsolete now.
573      - cleaned up code a little so that is easier to read (hopefully).
574      - added new (better?) discretizations of default advection and diffusion
575        (turn on with SEAICEuseFluxForm)
576      - replace 1 in 3d global fields by kSurface in growth.F
577      
578    checkpoint58a_post
579    o seaice:
580      - bug fix in advect.F
581    o shelfice:
582      - separate shelfice load anomaly from pload (breaks with time
583        dependent forcing), => introduce constant field shelficeLoadAnomaly.
584        Its default is 0., but it may be computed more cleverly from (unknown)
585        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
586        done offline. A good approximation of the pressure load anomaly is
587        necessary to avoid large initial adjustment processes underneath
588        deep-reaching shelfice.
589      - small fix in ISOMIP shelfice_thermodynamics
590      - add more sophisticated thermodynamics of Hellmer (1989), this is
591        now the default
592      - give a few constants more intuitive names
593    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
594      if bulk formulae are used in long integration (especially EmPmR). Turn
595      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
596      if balancePrintMean, the imbalance that is substracted is printed to
597      STDOUT.
598    o fix bug (typo) in obcs_apply_eta.F
599    o add a new package shelfice which enables us to model the circulation
600      underneath shelf-ice with draughts of hundreds of meters.
601     - works
602     - to do: + include improved thermodynamics
603              + check whether kSurfC (from model/inc/SURFACE.h) can be used
604                instead of new field kTopC
605              + can we use topoFile, Ro_surf and existing code in ini_depth.F
606                instead of new field R_shelfIce and new code in ini_depth.F
607                and ini_mask_etc.F?
608              + adjust vertical mixing schemes?
609    o seaice pkg:
610     - add a cpp-flag to include a simple formula for a salinity dependent
611       freezing point of sea water at the surface
612     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
613       meridional stresses are now different (and hopefully correct)
614    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
615       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
616       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
617    o pkg/diagnostics: add options and parameters for regional-statistics
618       diagnostics ; define regions by reading a region-mask from a file
619       (might add other options later)
620    o pkg/bulk_force:
621     - add option and parameters to use AIM surface-flux formulae.
622     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
623       others forcing fields (defined in PARM05, parameter file "data") are loaded
624       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
625     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
626     - use the right EXCH call for uwind,vwind (to work on CS-grid).
627     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
628       and parameters (note: calcWindStress replaces .NOT.readwindstress).
629     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
630    
631    checkpoint58
632    o add "--embed-source" option to genmake2 which, when the supporting
633      tools can be compiled (as determined by genmake2) will turn on the
634      embed_files package which then embeds the entire MITgcm source code
635      (*.[fFhc] + Makefile) used for the build within the executable
636      - requested by CNH but off by default
637      - adds a paltry <9MB to the mitgcmuv executable in most cases
638      - only writes the output when useEMBEDSRC in eedata is true
639    o clean up 3-dim. relaxation codes:
640      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
641      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
642      * Thanks to Tom Haine for testing!
643    
644    checkpoint57z_post
645    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
646      affects output (@ truncation level) of exp. plume_on_slope ; updated.
647    o fix the pickup behavior for obcs in combination with ptracers
648    o fix a bug in ptracers_external_fields_load
649    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
650      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
651    o transfered surface NH pressure to eta field (if exactConserv).
652    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
653         and update lab_sea output.txt file.
654    o completing 3-dim. relaxation code: additional term
655         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
656      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
657      * At compile time, in "EXF_OPTIONS.h" set
658          #define  ALLOW_CLIMTEMP_RELAXATION
659          #define  ALLOW_CLIMSALT_RELAXATION
660      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
661          tauThetaClimRelax3Dim = 15552000.0,
662          tauSaltClimRelax3Dim  = 15552000.0,
663      * 3 cases:
664          1) Use a constant-in-time 3-dim. field
665          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
666          3) Real-time relax. to time-evolving prescribed field
667    o Adding Laplacian-type smoothness constraint on
668      initial and boundary (forcing) controls (ic, bc)
669      * enable at compile-time via
670        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
671      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
672      * Absolute scale somewhat unclear so far
673      * no area weighting was included since no other cost term does so far
674    
675    checkpoint57y_post
676    First step for a NLFS adjoint
677    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
678    o new init. routines for calc_r_star, calc_surf_dr
679    o still need to deal with ini_masks_etc
680    o testreport seemed happy
681    checkpoint57y_pre
682    
683    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
684    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
685    o add new offset feature to offline pkg (plus minor cleanup)
686    o cfc fixes for final year of integration
687    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
688      be in GCHEM_OPTIONS).
689    
690    checkpoint57x_post
691    o fix testreport Pb in multiple test experiment.
692    o cleanup our namelist syntax in verification:
693      - make it more F95 standards compliant (some work still needed)
694      - allows the vast majority of our tests to work with gfortran
695    o Non-Hydrostatic:
696     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
697     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
698    o Allow to apply AB on T,S rather than on AB(gT,gS):
699     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
700     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
701       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
702     - need a "clever" read_pickup to restart from the other AB formulation
703    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
704    o remove some unused variables (reduces number of compiler warnings)
705    o adjoint
706      * Disable useVariableViscosity for adjoint for time being
707        (there are a number of extensive recomputations)
708      * Initialize certain variables needed for adjoint
709    
710    checkpoint57w_post
711    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
712                 fix the singleCpuIO RS version of MDSWRITEFIELD
713       and add a WARNING if using globalFiles=T with multi-processors.
714    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
715      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
716    o tracer advection scheme:
717      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
718       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
719       was not very convenient).
720      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
721       (further tests needed for the implicit DST & Flux-Limiter schemes).
722    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
723      and sRef for convenience, handy, when you want to initialize
724      ptracers in a large domain with a constant non-zero value. Also,
725      untangle ptracers_init.F a little.
726    
727    checkpoint57v_post
728    o change dome exp. to use variable viscosity in side-drag terms.
729    o remove all the files from the cfc_offline test since they are now
730      incorporated into tutorial_cfc_offline which has been producing
731      identical results for a few days of testing
732    o add new parameter: sideDragFactor to enable half-slip-side BC
733      and change side-drag S/R to use viscosity from mom_calc_visc
734      (can switch back by setting sideDragFactor=0.); affects results at
735      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
736       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
737    o vorticity & strain are now computed without masking, to account for
738      no-slip-side BC in variable viscosity calculation ; mask is applied
739      anyway later on, before computing advection/coriolis terms.
740    o modify exp4 to test new obcs support for reading from external files
741      and for passive tracers
742    o fix behavior of ptracers_monitor when monitor output is written to a
743      netcdf-file; still not independent of monitor.F (writes in the same
744      file).
745    o change default value of tRef (put a uniform, meaningful value for ocean
746      & atmos) and initialize sRef (was missing, as Martin mentioned).
747    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
748      to be proportional to enstrophy dissipation length.  Thus,
749       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
750      This is now consistent with Smagorinsky and with the manual.
751    
752    checkpoint57u_post
753    o OBCS and PTRACERS: add open boundary support for passive tracers
754      - either use homogenous (pseudo) v.Neumann conditions or prescribe
755        OB-values from file; this is not different from the way theta and salinity
756        are treated
757      - however, Orlanski-radiation conditions are not supported, and the model
758        will stop if you use pTracers and Orlanski at the same time.
759      - beefed up the rountine obcs_external_fields_load: now only those open
760        boundary values are overwritten with values from files for which there
761        are really files, otherwise the OB-fields remain untouched. This makes
762        it possible to use different OBs at different ends of the domain (as
763        with EXF)
764    o reduce number of exch calls in shap_filt (s2).
765    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
766      truncation level) 4/5 MLAdjust test results (11&12 digits match).
767    
768    checkpoint57t_post
769    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
770    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
771      same truncation, independent of the face number: affects affects several
772      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
773    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
774      note that biharmonic viscosity + no-slip was not tested in any experiment.
775    o fix bug in non-linear free-surf side-drag ; generate new output for
776      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
777    o make mnc honor the writeBinaryPrec flag for most kinds of output
778    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
779    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
780      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
781    o add brackets in multi-terms sum to get same truncation, independent of
782      the face number (manage to get exactly same value of gU,gV at the cs-edge)
783      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
784    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
785      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
786      a maximum grid-scale Reynolds number.  Also, changes all length calculations
787      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
788      Suggested values of viscosity parameters found in mom_calc_visc.
789      Many new viscosity diagnostics available.
790    
791    checkpoint57s_post
792    o Add clearing-house for viscosity calculations, mom_calc_visc and
793      correct numerous bugs in LeithD and Smagorinsky discretizations.  
794      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
795      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
796      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
797      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
798      The Strain-Tension form is now called with useStrainTensonVisc=.true.
799      ViscAhStrain and viscAhTension are now retired.
800    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
801    o In response to JMC's bug report, genmake2 now ignores any soft-links
802      that it finds in the *current* directory when searching for files.
803      Soft-links found in any other source directories will still work as
804      they did before.
805    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
806      a C routine to unlimit the stack size
807    o mnc-ify pkg/aim snapshot vars
808    o mnc-ify pkg/land as requested by Daniel
809    o various changes to mnc including:
810      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
811      - output can now be grouped so that all files within a group
812          change the ITER portion of their names in lock-step together
813      - can now read ("global") PER-FACE (in addition to PER-TILE) files
814          and works with both EXCH1 and EXCH2 (but needs more testing)
815      - writing works for all verification test cases w/ g77 on Linux
816    
817    checkpoint57r_post
818    o make MNC variable initialization happen earlier
819    o add diagnostics for (almost) each term of the momentum Eq.
820    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
821    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
822    o remove MINIMAL_TAVE_OUTPUT option ;
823      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
824    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
825      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
826    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
827    o add time-dependent SST, SSS control
828    o cost terms in ecco/ modularized (new cost_generic.F)
829    o cost_averages routines are modularized (new cost_averagesgeneric.F)
830    o new infrastructure for seaice model vs. obs misfits in seaice/
831      * driver from the_main_loop.F is seaice_cost_driver.F
832      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
833      * gradient check in Exp. 6a of natl_box_adjoint/
834    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
835      (see README file)
836    
837    checkpoint57q_post
838    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
839    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
840      - bug was reported by Jean-Michel and Ian Fenty
841    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
842      update exp. cpl_aim+ocn output.
843    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
844      Needed for high-res. runs with large global files
845      to be able to limit tapelev size
846    o Changed some tests for adjoint:
847      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
848      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
849      * global_ocean.90x40x15/ back to default 3-level checkpointing
850    o Modifications to enable scripted COMMON to MODULE conversion
851      * verification/OpenAD/code/ has necessary scripts and description;
852      * converts, compiles and runs successfully;
853    
854    checkpoint57p_post
855    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
856    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
857      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
858    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
859    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
860      (was already the case for dissipation with mom_vecinv,
861       and also the case for grad.PhiHyd when staggered-timeStep)
862      This will allow to put dissipation out-off the AB time-stepping.
863     Unfortunately, affects truncation error. Update output of exp. that "fails"
864      (cg2d matching number) and leave the others for later: front_relax(10),
865      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
866      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
867    
868    checkpoint57o_post
869    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
870      (2) its ready to be documented during the 20050801 DocFest
871    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
872      for ideal_2D_oce and lab_sea on linux_ia32_g77
873    o set to #undef CTRL_SET_OLD_MAXCVARS_30
874      in global1x1_tot/code_seaice_adj to access indices 32, 33
875      (worth another tag)
876    
877    checkpoint57n_post
878    o adding precip control xx_precip 32
879    o adding swflux control xx_swflux 33
880    o Replacing 10 forcing penalty cost routines by 1 generic.
881    o Implementing partitioning in time-mean and variable adjustment
882      for atmos. state.
883    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
884    o in natl_box_adjoint:
885      * updated exp 1 to 10
886        (but does not have time-mean vs. variable split results yet)
887    o updated global1x1/*_seaice_adj/
888      to incorporate latest changes
889    o enable useSingleCpuIO for mdsio vector routines
890      (applies in particular to tapelev I/O)
891    o removed inefficient K-loop in all active_file*control*.F
892    
893    checkpoint57m_post
894    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
895      and advect_cs (use EXCH-2 and standard cs-32 grid files).
896    o pkg/exch2: filling of face-corner halo regions is optional
897      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
898    
899    checkpoint57l_post
900     tag before updating tutorials (pre-release-2)
901    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
902       for output and interpolation of input fields onto model grid)
903    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
904       Affects results of exp. rotating_tank ; update output.txt.
905    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
906          and taking the square quantity and/or using a fraction-weight field.
907    o fix aim_diagnostics_init.F mate numbers.
908    o add mnc output capability to diagnostics/diagstat and update
909      our cvsignore files for the ACSII output generated
910    
911    checkpoint57k_post
912    o lab_sea now uses diagnostics package and provides a suite of
913      new EXF diagnostics output.
914    
915    checkpoint57j_post
916    o exf
917      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
918        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
919        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
920      * extended diagnostics output
921        - now includes all EXF variables
922        - hs, hl moved to common block
923        - separate S/R for diagnostics, called after ctrl vector is added
924        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
925        - EXFqnet contains true Qnet (i.e. includes qsw)
926      * updated verif. lab_sea, global_with_exf
927      * Rearranging hflux (exf_mapfields -> exf_getforcing)
928        to ensure that diagnostics sees a true EXFqnet
929    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
930    o diagnostics pkg: change pointers so that 1 diagnostic can be used
931      several times with different frequencies.
932    o mnc-ify the thsice package as requested by Daniel Enderton
933      - the monitor--MNC output needs work
934      - many attributes need to be added (most are currently blank)
935    o mnc-ify theaim_v23 package as requested by Daniel Enderton
936      - many attributes need to be added (most are currently blank)
937    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
938    o add Sadourny like discretization to the 4th.O vorticity advection scheme
939    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
940      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
941         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
942    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
943     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
944    
945    checkpoint57i_post
946    o Diagnostics package was changed: diagnostic allocation is now deactivated
947      by setting an empty file name in the namelist (used to be by setting 0 frequency)
948    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
949      add 1rst Order upwind vertical Shear.
950    o add a quick fix for A/B checkpointing in OFFLINE mode
951    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
952      end-run around the C/Fortran linking horror in eesup/src/timers.F
953    o added pkg/runclock: allows user to terminate run based on wall clock
954    o added non-hydrostatic scaling parameter: nh_am2
955    o pkg/my82: futile attempt to make results compiler-independent by adding
956      some "_d 0", etc. no effect.
957    o for mnc output, fill the 'T' coordinate var with myTime and create a
958      separate 'iter' variable for iteration count
959    o pkg/diagnostics:
960      add new capability: output of Global/Regional & per-level statistics ;
961      tested against monitor output (including land & thSIce) on various exp.
962    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
963    
964    checkpoint57h_done
965      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
966      data.diagnostics, data.gchem, data.ptracers) is done.
967    
968    o pkg/diagnostics: prepare for Global/Regional statistics.
969      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
970    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
971      and rename it: DIFFERENT_MULTIPLE
972    
973    checkpoint57h_post
974    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
975    o pkg/diagnostics: change output frequency, now in seconds (instead
976      of Nb of iterations). This requires to change data.diagnostics.
977    checkpoint57h_pre
978    
979    o in mnc, let the user create the output dir if both mnc_outdir_date
980      and mnc_outdir_num are false
981    o add fflags() to pkg/diagnostics which allows one to specify, on a
982      per-file basis, the file precision [default behavior is unchanged]
983    o added diagnostics to pkg/kpp, including computation of mixed layer
984      depth based on a temperature/density criterion
985    o updated verification/natl_box to test the new pkg/kpp diagnostics
986    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
987    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
988    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
989      not mnc -- this mistake was found by JMC and is now corrected
990    
991    checkpoint57g_post
992    o add Adams-Bashforth 3rd Order time stepping:
993      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
994      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
995    checkpoint57g_pre
996    
997    o make lambda[Theta,Salt]ClimRelax spatially varying
998      (default remains spatially uniform constant based on tau)
999    o added new control variables
1000      * init. uVel, vVel, etanN
1001      * lambda[Theta,Salt]ClimRelax
1002    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1003      (suggested by G. Forget)
1004    
1005    checkpoint57f_post
1006    o add parameter "baseTime" = model base time = time at iteration zero
1007      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1008      account for baseTime shift
1009    o move Coriolis arrays from PARAMS.h to GRID.h
1010    checkpoint57f_pre
1011    
1012    o mnc-ifying the seaice package
1013    o introduced an alternative length scale calculation for use in the limiting
1014      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1015    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1016    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1017      as well as grad(vort3).  Made it compatible with both approximate form
1018      for the cubed sphere and full form of these gradients.  Added flag
1019      useFullLeith to select between approximate and full form.  
1020    o add "d0" in getcon.F to reduce differences between compilers/platforms
1021      update output.txt of exp. fizhi-gridalt-hs
1022    o change port_rand funtion to allow to set the seed.
1023    o fix obscure MNC bug involving conversion between reals and integers
1024      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1025        new version is now more standards-compliant
1026    o adjoint-related modifications
1027      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1028      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1029      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1030    
1031    checkpoint57e_post
1032    o Adding eddy stress controls a la Ferreira et al.
1033    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1034    
1035    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1036      update output.txt of exp. fizhi-gridalt-hs
1037    o add more "Z" dimensions and associated coordinate vars to MNC
1038    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1039    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1040      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1041      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1042      months and years.  Requires pkg/cal.
1043    o diagnostics: add pickup functionality
1044      - off by default for backwards compatibility
1045      - current version only uses MDSIO -- MNC will be added
1046    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1047    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1048    
1049    checkpoint57d_post
1050    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1051    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1052      output from the diagnostics package
1053    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1054    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1055      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1056    o add coordinate variables to the MNC output from the diagnostics package
1057    o change MNC-flags default value: true when useMNC=TRUE
1058    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1059      the ability (off by default) to read the grid information using MNC
1060    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1061    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1062    o do snap-shot diagnostics at the middle of the time-interval (instead of
1063      at the end).
1064    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1065      new test for AIM with thSIce + slab-ocean
1066    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1067    o move state variable diagnostics to the beginning of the time step ;
1068      (note: still needs some work specially for snap-shot diagnostics)
1069      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1070    
1071    checkpoint57c_post
1072    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1073    o generate new output.txt files on faulks with g77 & the new -ieee option
1074    checkpoint57c_pre
1075    
1076    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1077      update output.txt of exp. global_ocean.90x40x15
1078    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1079      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1080    o add saltFlux(+File) forcing capability with periodicExternalForcing
1081    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1082    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1083    o improvements for the MNC output from DIAGNOSTICS:
1084      - correct handling of the unlimitied dimension
1085      - all dims now have associated coordinate variables
1086      - variables located at U, V, and Corner ("Z") points are now written
1087        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1088        *all* data points are output
1089    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1090    o added pkg/seaice/seaice_monitor.F
1091    o mdsio_readfield.F can now read files visible only to master MPI process.
1092    o pkg/seaice: some test code for ice-modified ocean stress
1093    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1094      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1095      spurious negative numbers for precipitation and humidity.  Will cause
1096      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1097    o pkg/ctrl/
1098      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1099        May be enabled via doPackDiag
1100      *  introduce z-scaling of
1101         + gradient (doZscalePack) and
1102         + control (doZscaleUnpack)
1103    o pkg/mdsio/
1104      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1105      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1106    
1107    checkpoint57b_post
1108    o simplify options in diagnostics_fill arguments (remove weird combinations)
1109    o fix MNC coordinate variables so that they now contain per-face index
1110      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1111      general, EXCH2 grids are only aligned to a "local" coordinate system
1112    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1113    o Implement instantaneous output within pkg diagnostics:
1114      setting a negative frequency in data.diagnostics produces
1115     "snap-shot" output (as opposed to time-average if freq > 0)
1116    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1117      NOTE: change ptracer diagnostics name: use 2 characters to work with
1118            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1119    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1120      becomes the coordinate variable for the 'T' dimension
1121    o add CF-style coordinate variables to MNC
1122      - just a first cut:  numbers are meaningless on the cubesphere and
1123        missing along the T axis but otherwise it works!
1124    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1125    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1126    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1127      this is based directly on what the model compute, so that the content of
1128      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1129    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1130    o clean up build options files for SunOS, in particular
1131      - remove -traditional from xmakedepend
1132      - change -xarch=v9 to -xarch=native for f77
1133      - restore use of make (not gmake)
1134      - add CC=gcc if using g77
1135    o changes per discussion of AM, JMC, & EH3 today:
1136      - move redundant "grid" variables out of "state" -- in preparation of
1137        creating proper CF-style coordinate variables and in recognition
1138        that any/all grid variables can be easily copied (eg. w/NCO) from
1139        the grid files into any of the other NetCDF files
1140      - *always* output grid variables with MDSIO (this will eventually be
1141        changed)
1142      - output MNC grid file if useMNC is true
1143    o every instance of _END_MASTER() has been found and replaced with
1144      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1145      preprocessors
1146    o re-arrange diagnostics pkg initialisation:
1147     - allow each package to extend the available diagnostics list
1148     - add some checking and fix small problems (multi-threaded, ...)
1149     - new S/R diagnostics_fill (replace fill_diagnostics):
1150       look through the short list of active diag. (instead of the long list)
1151       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1152    
1153    checkpoint57a_post
1154    o this set of changes restores TAMC compatibility
1155      tested for global_ocean.90x40x15 adjoint on trough
1156      (what a pain)
1157    
1158    checkpoint57a_pre
1159    o some modifs in tools/build_options for sunos
1160    o call ctrl_pack for ctrl at end for optimcycle=0
1161    
1162    checkpoint57
1163    o add horizontal bi-harmonic viscosity for vertical velocity
1164      - new parameter viscA4W (defaults to viscA4)
1165      - affects only non-hydrostatic code
1166      - to be done: no-slip lateral boundary conditions
1167    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1168    o implement Implicit Vertical advection for pTracers
1169    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1170      (implemented also for implicit vertical diffusion & advection)
1171    o OBCS: extend application of tracer open boundary conditions
1172      to a strip beyond the boundary of width Olx/Oly
1173    o add call monitor to TAF set of required calls (flow directives)
1174      and include in natl_box_adjoint
1175    o untangle a few ifdefs related to cost, ctrl, autodiff
1176      untangel a few ALLOW_ECCO_OPTIMIZATION
1177    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1178      (theta2, salt2 in ecco_cost_weights)
1179    
1180    checkpoint56c_post
1181    o OBCS as control variables
1182      - update ctrl_ad_diff.list, obcs_ad_diff.list
1183      - remove balance of obcs controls from default
1184      - fix index bug nobcs in ctrl_init
1185      - fix dummy fields filen in ctrl_pack
1186      - add dummy weights for obcs
1187    o lsopt: comment out fort.94 output
1188    o optim:
1189      - remove unnecessary header files
1190      - adjusted namelists
1191      - add xerbla.F to Makefile
1192    o exf:
1193      - multiple modifications of exf_check_range
1194      - unit change in exf_init_runoff from [m/year] to [m/s]
1195    o mdsio:
1196      - i/o-vector change debugLevel from debLevA to debLevB
1197    
1198    checkpoint56b_post
1199    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1200      is called from DO_THE_MODEL_IO
1201      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1202      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1203      - clean up PTRACERS_WRITE_TIMEAVE a little
1204    o add another verification experiment that tests both the cfc-pkg and
1205      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1206      reactive tendencies treated inline with regular timestepping
1207    o testreport previously did a lousy job of comparing small numbers, so
1208      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1209      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1210      testreport.
1211    o ptracers_monitor: bug fix for MPI
1212    
1213    checkpoint56a_post
1214    o GCHEM: finish reorganizating the package
1215      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1216        (introduces another 3D-array for each passive tracer, but only if
1217        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1218        gchemTendency is not needed because the timestep is done separately)
1219      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1220      - GCHEM is now---more or less cleanly---separate from PTRACERS
1221      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1222        so clear to me how that should be done in a general way.
1223    o CFC: improve formatting of output in CFC_ATMOS
1224    o PTRACERS:
1225      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1226        that ALL experiments with ptracers enable can be checked. This makes
1227        GCHEM_MONITOR obsolete.
1228      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1229        monitorFreq
1230      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1231    o add PTRACERS (PTR0[1-5]) to testreport output
1232    o exf_check_range:
1233      * default changed to .TRUE.
1234      * will check values for niter0 if debLevA, every timestep if debLevB
1235      * STOP in exf_check_range if 'out of range'
1236      * range chosen generous to allow for potential extema
1237      TBD: a version with stricter range
1238           permitted range would be runtime parameters
1239    o GMredi:
1240      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1241      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1242      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1243    o GCHEM:
1244      - move call to GCHEM_FORCING_SEP, so that it is now called before
1245        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1246      - introduced a useGCHEM runtime flag and applied it everywhere.
1247      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1248        this flag is now only visible within GCHEM-pkg routines.
1249      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1250        be replaced by a 3D array that is computed before thermodynamics; for
1251        this, the tracer ID iTracer had to be included into the parameter list
1252        of ptracers_forcing
1253      - set up forward_step to call gchem_forcing, that will replace
1254        gchem_forcing_int in ptracers_forcing
1255      - cleaning up
1256    o small cleaning of exch2: remove files that are also in eesupp/src
1257    
1258    checkpoint56
1259    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1260    o mnc: cleanup "full" files--fixes out-of-memory problem
1261    o ECCO-GODAE
1262      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1263      * fully merged and updated from SIO code
1264        windstress sign change affects
1265        - exf_inscal_[u/v]stress
1266        - sign of xx_tau[u/v] adjustments
1267        - signs in cost_scat
1268      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1269      * natl_box_adjoint updated and compressed
1270      * 2-level checkpoint switch added
1271        (tested in EXP. 1 of natl_box_adjoint)
1272      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1273    o SVD
1274      * first complete, non-hacked version for SVD calculations
1275      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1276        performed via direct access files admtlm_vector.it????
1277        (via ctrl_[un]pack)
1278      * optimcycle is used for ARPACK iteration counter
1279        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1280      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1281        and add linear transforms where necessary
1282      * controls are initial/final SST, SSS (can be extended; need to check
1283        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1284    o mdsio: filename info to both stderr, stdout
1285    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1286      from sign change
1287    
1288    checkpoint55j_post
1289    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1290      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1291    o add consistent build directories and .cvsignore files to verification
1292    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1293    o make all subroutines 30 or less characters in length for certain older
1294      compilers to work (a thorough search only turns up two routines in
1295      pkg/ptracers)
1296    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1297      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1298    
1299    checkpoint55i_post
1300    o change arrays for total vertical diffusivity (2.D if explicit,
1301      3.D if implicit) ; each ptracer uses its own background value.
1302    o added mnc/NetCDF output capability to ocn_compon_interf
1303      - added bits to verification/cpl_aim+ocn so that it can run on
1304        ITRDA and other clusters without the mpirun "-wd" option
1305    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1306      configuration
1307    o give MNC the ability to create additional files rather than
1308      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1309      - the default is just less than 2GB which is a practical limit
1310        on many systems
1311    o Compute the non-local term using either KPP vertical diffusivity (=default)
1312       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1313    
1314    checkpoint55h_post
1315    o add verification test "vermix"
1316    o remove all the *_ioinc flags and replace with the single global
1317      outputTypesInclusive flag
1318    o allow to set a vertical profile of vertical diffusivity for T & S
1319    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1320    o useMNC moved from data.mnc to data.pkg
1321    
1322    checkpoint55g_post
1323    o Renaming carbon AD experiments to comply with testreport conventions
1324    o Updating adjoint of Held-Suarez hs94.1x64x5
1325    o Fixing directives for non-ECCO forward_step, after ECCO directives
1326      have been fixed to avoid recomp. of do_oceanic_phys
1327      Works well for global_ocean.90x40x15,
1328      but recomp. issue remains for carbon
1329    o Updating adjoint output for natl_box_adjoint after
1330      pkg/ecco has been modified (see taga c55d_post)
1331    
1332    checkpoint55f_post
1333    o rename to timeave_init_fixed
1334    
1335    checkpoint55e_post
1336    o some delicate re-shuffle of store directives to avoid one
1337      extra call of do_oceanic_physics
1338      affects ecco_the_main_loop.F, do_oceanic_physics.F
1339      checkpoint_lev1_directives.h
1340    o NB: this may break global_ocean adjoint temporarily,
1341      but it is clear how to fix it. Will do later, need this now.
1342    
1343    checkpoint55d_post
1344    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1345    o ecco_cost_weights is modified to 1x1 runs
1346    o modifs to allow observations to be read in as
1347      single file or yearly files
1348    o enable to read exf forcing fields as either
1349      single file or yearly files (flag useExfYearlyFields)
1350    checkpoint55d_pre
1351    
1352    o switch between 2-level and 3-level checkpointing
1353    o add ability of MNC to write local and "partial" (eg. 2D slices where
1354      the full 3D field is never actually stored) arrays to NetCDF files
1355      with the correct (that is, the complete multi-dimensional) set of
1356      array indicies
1357      - used in mom_vecinv() to write the diagFreq output
1358      - tested (demonstrated) in verification/aim.5l_cs
1359    o further mnc-ification
1360      - add verification/lab_sea to the list with mnc setups
1361      - fix undefined mnc v-names in cd_code
1362      - add kpp to mnc output (both snapshot and timeave)
1363    o non-hydrostatic code
1364      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1365        in calc_gw.F
1366      - defaults to viscAh
1367      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1368        friction or Leith) in non-hydrostatic mode, as long as there is
1369        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1370    o pkg/cost
1371      extend simple cost functions to treat time mean quantities
1372      (T,U,V) via cost_accumulate_state from cost_tile
1373    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1374        be 2 times larger than the minimum size the advection scheme requires.
1375        now get a perfect conservation of salt in advect_cs test-exp (updated)
1376    o GGL90 (Gaspar's TKE mixed layer)
1377      - add horizontal diffusion of TKE, requires exchanges in
1378        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1379        default. In OPA there is no horizontal diffusion of TKE but the
1380        mixing coefficients are computed from a horizontal average of TKE of
1381        6 points or so. I think that diffusion has a little more physical
1382        justification.
1383      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1384        was in vain)
1385      - mask tke-variable in ggl90_init
1386    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1387    o fix biharmonic diffusion on CS-grid.
1388    o more obcs stuff
1389      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1390        for reading boundary values. This routine is called from
1391        obcs_prescribe_read
1392      - updated obcs_check
1393      - changed sponge layer relaxation parameter units for days to seconds
1394      - turned off sponge layer by default
1395      - changed argument list of OBCS_CALC to myTime+deltaTclock
1396      - fixed about 35 bugs in obcs_external_fields_load
1397    
1398    checkpoint55c_post
1399    o obcs stuff
1400      - new runtime flags useOBCSprescribe, useOBCSbalance
1401      - re-arranged obcs_calc
1402      - moved exf_getobcs to obcs_prescibe_read
1403        obcs_prescibe_read is called after ORLANSKI stuff
1404        and independent of it (executable can contain all).
1405      - updated obcs_check
1406      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1407        These may be necessary only if tangential velocities are
1408        prescribed at OB, not sure, needs testing.
1409    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1410      which simplifies the calls and passes the ifc check-bounds test
1411    
1412    checkpoint55b_post
1413    o add a 2D scalar, Z location, exchange_2 routine.
1414    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1415      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1416      affects advect_cs results (for the wrong reason): update output.txt
1417    o use a more standard discretization for biharmonic viscosity ;
1418     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1419      affects results of dome set-up: update output.txt
1420    o fix gad_advection.F (CubedSphere part), back to version 1.23
1421    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1422    
1423    checkpoint55a_post
1424    o merged code to
1425      * prescribe/read time-dependent open boundaries
1426        (works in conjunction with exf, cal)
1427      * sponge layer code for open boundaries
1428      * each boundary N/S/E/W now has its own CPP option
1429        (healthy for the adjoint)
1430    
1431    checkpoint55
1432    o up-to-date adjoint of previous breaks
1433      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1434      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1435      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1436      - carbon: * remove tr1-related adjoint verification
1437                * add ptracer as control variable
1438    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1439      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1440    
1441    checkpoint54f_post
1442    o in verification/carbin/ remove experiment related to
1443      ALLOW_PASSIVE_TRACER (array tr1 etc)
1444      code_ad/ input_ad/ results_ad
1445    
1446    o add two new packages
1447      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1448        + subject to optimization (memory)
1449      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1450        + subject to reordering (many GOTOs in the original code)
1451        + so far opps is called for every (i,j) point, and then operates in
1452          the vertical; one may want to reorder the scheme in order operate in
1453          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1454          fields)
1455    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1456      - all verification tests compile and run with linux_ia32_g77
1457      - defaults are compatible with current input files--nothing
1458        should change if you were not previously using MNC
1459      - MNC output has been added in numerous places (eg. timeave)
1460        but there are still a few writes not yet do-able with MNC
1461        (this is in progress)
1462      - flags now allow for either/or/both use of MDSIO and MNC and
1463        documentation will soon follow
1464      - numerous small formatting cleanups for ProTeX
1465    o add version info (via BUILD_INFO.h) to MNC and stdout
1466    
1467    checkpoint54e_post
1468    o add two new packages
1469      - pp81 (Packanowski and Philander, 1981), Richardson number and
1470        stratification dependent mixing
1471      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1472      - these scheme operate in a similar manner as KPP (without ghat, of
1473        course), however there is only one diffusivity that is used for both
1474        temperature and salinity (and passive tracers)ç
1475    o add offline package
1476    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1477      provided by Stephanie Dutkiewicz
1478    o genmake2: add ability to search for C compilers and cleanup test output
1479      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1480    
1481    checkpoint54d_post
1482    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1483    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1484      leading to additional shift by 5 days each year of integration
1485       (i.e. leading to considerable offset over the years)
1486    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1487    o start with no AB and no initial filtering (staggerTimeStep):
1488      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1489    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1490      (external loading & cpl import/export stay in forward_step.F)
1491    o update coupling interface to work with new staggerTimeStep
1492    o change MDSIO ptracers_pickup.
1493    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1494    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1495    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1496    
1497    checkpoint54c_post
1498    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1499      this affects (truncation error) output.txt of test-exp:
1500       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1501    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1502    o change Qnet to always be the net heat flux, (+upward).
1503      affects (truncation error) output of natl_box exp.: updated
1504    o define the max number of passive tracers in PTRACERS_SIZE.h
1505    o start to test mnc routinely in exp0
1506    o add sea-ice loading (sIceLoad) as a new forcing field.
1507    
1508    checkpoint54b_post
1509    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1510       impressive on Altix and Opteron systems)
1511    o diagnostics can now write NetCDF files through the mnc package
1512    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1513    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1514    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1515      affects (truncation error) output of lab_sea & natl_box exp.: updated
1516    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1517    
1518    checkpoint54a_post
1519    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1520    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1521    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1522    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1523      + internal_wave (shift in writing cg2d_ini_res)
1524    checkpoint54a_pre
1525    
1526    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1527      - modified verification/lab_sea and natl_box_adjoint accordingly
1528    
1529    checkpoint54
1530    checkpoint53g_post
1531    o prepare splitting of thermodynamics: store convect.counter in common block
1532    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1533      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1534    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1535    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1536    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1537    o restore adjointability
1538    
1539    checkpoint53f_post
1540    o modifications that affect AIM experiment results (update output.txt):
1541      - no advection of S at top interface Nr (pkg/generic_advdiff)
1542      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1543    o AIM pkg:
1544      - include stability function into surf.Flux derivative relative to Tsurf
1545      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1546    
1547    checkpoint53e_post
1548    o merged cylindrical coord configuration
1549    o added rotating_tank experiment
1550    checkpoint53e_pre
1551    
1552    checkpoint53d_post
1553    o faulks upgraded: re-generate output.txt that have changed:
1554       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1555    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1556    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1557    o added Sadourny discretization of Coriolis
1558      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1559      - re-enabled use of omega3 (useAbsVorticity)
1560    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1561      vector-invariant equations
1562      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1563    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1564      hopefully without new bugs
1565      - still to do: biharmonic friction for non-hydrostatic w
1566    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1567    o regenerated output for global_ocean_ebm (using -ieee)
1568    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1569      of mom_common/
1570      - simple re-arrangement of instructions within computing loop
1571    checkpoint53d_pre
1572    
1573    checkpoint53c_post
1574    o new version of coupler for AIM+thSIce and Ocean models
1575     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1576     - land: change Evaporation of snow
1577     - aim with thSIce: fix bug in snow-precip.
1578    o changes to calc_gw.F
1579     - bug fix for w^2 term near the bottom boundary
1580     - (hopefully) improve the lateral slip boundary condtions for use with
1581        partial/looped cells
1582      - because the bug fix changes two verification experiments anyway (exp5
1583        and plume on slope), change the lateral boundary condition from half slip
1584        to the value of no_slip_sides
1585    o ebm package wasnt quite up to the parallel task. Fixed that.
1586    o Adjoint of EBM package + verification
1587      * TLM OK
1588      * ADM not sufficient accuracy yet (needs further testing)
1589    
1590    checkpoint53b_post
1591    o Commiting new energy balance model to repository
1592      * package is pkg/ebm
1593      * verif. is verification/global_ocean_ebm
1594      * references are in ebm_driver.F
1595    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1596    C        Global thermohaline circulation. Part I:
1597    C        Sensitivity to atmospheric moisture transport.
1598    C        J. Climate 12(1), 71-82
1599    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1600    C        Global thermohaline circulation. Part II:
1601    C        Sensitivity with interactive transport.
1602    C        J. Climate 12(1), 83-91
1603    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1604    C        Destabilization of the thermohaline circulation
1605    C        by atmospheric eddy transports.
1606    C        J. Climate 7(12), 1870-1882
1607    o Will need long integration testing.
1608    checkpoint53b_pre
1609    
1610    o created pkg/mom_common in preparation for variable viscosity code
1611    o renamed and split ini_mnc_io
1612    o pkg/land: only liquid water can diffuse or run-off
1613    o AIM using land: soil wetness availability account for snow
1614    o added printMapIncludesZeros to EEPARMS namelist
1615    
1616    checkpoint53a_post
1617    o restore TAMC compatiility for exf_constants.h
1618      (no usage of _d in .h)
1619    o Additional storing in KPP in an attempt to fix
1620      TAMC problem with adjoint of KPP code.
1621      (no success...)
1622      Identical code works fine with TAF.
1623    o Fixed verification/natl_box_adjoint experiments.
1624      Initial conditions for Experiments 4 and 5 are now
1625      set to "SEAICE_initialHEFF=0", which is more reasonable,
1626      and hence gives results closer to that of Experiment 2.
1627      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1628    
1629    checkpoint53
1630    o stable checkpoint with up to date adjoint
1631      TLM tests only run for 1st grdchk at the moment. Its unclear if
1632      this is a code problem or a problem with resetting code for g_
1633      variables that is being autogenerated wrong.
1634      Otherwise:
1635       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1636       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1637         are both still in chaos following their security messes.
1638    
1639    checkpoint52n_post
1640    o various build (mostly genmake2) changes including:
1641      - ability to build/run more easily within Cygwin and MacOS X
1642      - more complicated Makefiles with a stronger dependence on Gnu Make
1643    o pkg/seaice modifications
1644      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1645        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1646        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1647      - changed proxy for geostrophic velocity and updated
1648        verification/lab_sea/results/* accordingly
1649      - removed ADI dynamic solver from pkg/seaice
1650      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1651        they caused a segmentation fault under certain circumstances
1652      - removed unused field WATR
1653    o bug fix in exf-package:
1654      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1655         now reflect that.
1656    o small fixes in the cal-package:
1657      - set reference date to first of January for the 'model'-calendar
1658      - failing of cal_CheckDate in cal_FullDate now actually results in a
1659        warning
1660    o small modifications in exf-package to increase flexibility:
1661      - change climtempfreeze from a constant to a runtime parameter that
1662        is specified in data.exf_clim (default = -1.9)
1663      - introduce runtime parameter windstressmax (default = 2.0) that is
1664        specified in data.exf
1665    o fix in pkg/thsice:
1666      - update Evap (Tsf changes) to be consistent with Latent heat flux
1667      - maintain snow precipitation unchanged (even if Tsf >=0).
1668     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1669    
1670    checkpoint52m_post
1671    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1672      this does not change any of the results, because myIter=0 in swfrac always
1673      lead to jwtype=2 (the default anyway), but the call makes little sense
1674      as a default
1675    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1676    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1677      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1678    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1679    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1680    o extending useSingleCpuIO option to work with new exch2 I/O format
1681      - old-style, missing-tile I/O is still accessible by defining CPP
1682        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1683    o monitor package can write to NetCDF files and/or STDOUT
1684    o fix re-definition bug in MNC_GRID_INIT_ALL()
1685    o doc/api_reference added
1686      - a framework for building an API Reference Manual using all
1687        the "protex" comments embedded in the code
1688      - see pkg/generic_advdiff, pkg/mnc for examples
1689    o MNC:
1690      - make myThid the last argument for all subroutines
1691      - new default for the grid files: NO halos
1692      - add useMNC and other run-time flags
1693      - separate per-file-group handling of the unlimited dimension
1694      - early initialization of MNC w/ flags read at the eeboot stage
1695        and lookup tables set in initialize_fixed
1696      - write all MNC output to a freshly-created directory
1697    o thermodynamics sea-ice (thsice) is now tested with testreport.
1698    o test exp. advect_cs: use the standard cs32 grid ; update output.
1699    o Added functionality to grdchk:
1700      pick global i,j,k position (or nearest wet) where to perform check.
1701    
1702    checkpoint52l_post
1703    o new land formulation:
1704      a) use ground enthalpy as prognostic variable to ensure exact
1705         energy conservation.
1706      b) account for water temperature and for latent heat of freezing
1707         in all processes (rain, run-off, ground storage)
1708      c) compute surface and ground temperature implicitly.
1709    o aim_v23 modification for new land model:
1710      a) Treat separately land / ocean / sea-ice surface fluxes
1711         to allow implicit computation of land & sea-ice surface temp.
1712      b) add snow precipitation.
1713    checkpoint52l_pre
1714    
1715    o fix problem (when 1 tile is empty) in min/max monitor.
1716    o fix bug in timeAve (u,vZetatave in common block)
1717    o no restoring terms under ice for pkg/seaice
1718    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1719    o bug fix for pkg/seaice pickups
1720    o change MNC call locations and add coordinate attributes
1721    o mask vorticity at the corner ; affects global_ocean.cs output
1722    o fix ini_curvilinear_grid ; test CS experiments with mpi
1723    o aim.5l_cs: modify sea-ice fraction input file ; update output
1724    o exf: Adding simple range check routine for exf fields after read
1725    
1726    checkpoint52k_post
1727    o removed top-level directory "diags"
1728      - we migrated these functions to pkg/timeave a long time ago
1729    o fixed bug introduced in pkg/monitor
1730    o accuracy ctrlprec = 32 insuffient for gradient checks using
1731      averaged fields (I/O via cost_averages)
1732      -> use ctrl.h in active_file*.F to control I/O precision.
1733    o paramter list of CALL ADTHE_MAIN_LOOP
1734    o added initial do_the_model_io to ecco
1735    o set all ...Freq to zero after cost_final
1736      taveFreq, dumpFreq, pChkptFreq
1737    o MAIN and ECCO differentiability restored
1738    
1739    checkpoint52j_post
1740    o fix nchklev in tamc.h for global_ocean...
1741    o Bringing flow and store directives up-to-date
1742    o Really weird thing!
1743      call do_the_model_io from the_main_loop with parameters
1744      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1745      TAF places a faulty re-call of initialise_varia
1746      after cost_final call which should not be there!
1747    checkpoint52j_pre
1748    
1749    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1750      error messages
1751    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1752    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1753      debug output
1754    o modfied mdsio_writefield.F to handle non-global files under exch2
1755    o update AIM Cubed-Sphere exp (aim.5l_cs):
1756      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1757    o update AIM Equatorial Channel exp:
1758      use standard aim_v23 pkg and change the SST fields to be more realistic.
1759    o globalFile now works with exch2
1760    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1761      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1762    o limit timeave output for hi-res integrations
1763    
1764    checkpoint52i_post
1765    o removed CPP_EEOPTIONS.h from verification/*/code
1766    o updated the tiling for global_ocean_pressure
1767    checkpoint52i_pre
1768    
1769    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1770      the old pkg/aim).
1771    
1772    checkpoint52h_pre
1773    o shortened offending lines in exch2_send_rx?.template
1774    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1775    o genmake2: add build & execute test for NetCDF code
1776    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1777      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1778    o added useSingleCPUIO flag to monitor.F and mon_out.F
1779    o added temporary hack for sea-ice dynamics on the cube:
1780      metric terms are ignored and it is assumed that
1781      there is no sea-ice on cube faces 1, 2, 4, and 5.
1782    
1783    checkpoint52f_post
1784    o added exch2 cube routines to pkg/exch2
1785    o modified hs94.cs-32x32x5 to use it
1786    o added new grid files to hs94.cs-32x32x5
1787    checkpoint52f_pre
1788    
1789    checkpoint52e_post
1790    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1791      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1792    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1793      to work with implicit vertical advection and AB ;
1794    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1795    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1796     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1797    checkpoint52e_pre
1798    
1799    o fix bug in impldiff when Nr=1 or Nr=2.
1800  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
1801  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1802  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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