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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.805 by jmc, Tue May 1 12:29:18 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    checkpoint59a
8    o pkg/seaice: some parameter clarifications and a little bit of clean up
9    o pkg/thsice: rename run-time parameters:
10       himin       -> hIceMin
11       himin0      -> hThinIce
12       hihig       -> hThickIce
13       i0          -> i0swFrac
14       transCoef   -> bMeltCoef
15       frac_energy -> fracMelting
16      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
17       with default values (for now) that do not change the results.
18      remove old version of thsice vars advection in pkg/seaice.
19    o in FFIELDS.h:
20      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
21      - make pLoad & sIceLoad always available (but still only used if
22         ATMOSPHERIC_LOADING is #define).
23    o pkg/kpp: replaced _KPP_RL with _RL
24    o bug fixes for vertical diffusivity computations when both KPP and
25        3D diffusivity arrays are used.
26    o pkg/seaice: fix bug in evp solver, while doing that
27      - change (improve?) discretization of stress computations for both
28        cgrid-lsr and evp solver
29      - add a new routine to compute strain rates
30      - the above changes lab_sea results
31      - add no slip conditions for evp solver (off by default), lsr-version
32        may follow
33      - fix exchange for shear at Z-points (does not change lab_sea)
34      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
35        (to force the user to pick a time step since there is not "safe" way
36        of choosing it)
37      - add principal stress diagnostics
38      - rearrange fields for evp a little to avoid having to call a: too many
39        exchanges and b: exchanges for stress trensor components which we do
40        not have.
41      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
42        of evp, complete rewrite for lsr case (latter is does not yet work
43        in all cases)
44    o pkg/kpp: add code to have mixing in shelf ice caverns
45      - add myThid to all kpp routines (long overdue)
46    
47    checkpoint59
48    o pkg/exf:
49      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
50        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
51      - move exf header files from lower_case.h to UPPER_CASE.h ;
52        add missing cvs Header & Name
53      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
54      - add namelist param. selectStressGridPosition, exf_monFreq
55      - retire many _CLIM routines, and remove data.exf_clim
56        + params moved to data.exf
57        + climsst, climsss now handled by exf_set_gen, i.e.
58          climss?period=0 refers to constant field,
59          climss?period=-12 to monthly forcing
60      - split up namelists in data.exf
61    o pkg/seaice:
62      - remove seaice_exch and seaice_exch_uv
63      - remove superfluous exchange of theta
64      - add myThid to seaice_budget_ocean/ice
65      - add new interface for atmospheric wind forcing (C-grid only)
66        + new routine
67        + two new field (taux, tauy for stress over ice)
68        + removed one global field (DAIRN) for C-grid case only
69    o pkg/thsise
70      - 2nd set of modifs for thsice adjoint in conjunction with exf
71    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
72    
73    checkpoint58y_post
74    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
75      vertical diffusivity, similar to that in MOM4; turned on using
76      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
77      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
78    o Added capability for 3D specification of background vertical diffusion
79      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
80      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
81      "data" file that contains the 3D vertical diffusivity coefficients.
82    o ice dynamics (pkg/seaice) with thsice thermodynamics:
83      - add code within pkg thsice to advect & diffuse sea-ice fields
84      similar to (and will replace) what has been added in  seaice_advdiff.F,
85      but: - conserving Mass, Heat & Salt.
86           - better when using non-linear advection scheme (not yet fully tested)
87           - can also be used in atmospheric set-up (for now, only the diffusion).
88    
89    checkpoint58x_post
90    o IO option for global-file compact format:
91      - add options when generating topology (utils/exch2/matlab-topology-generator)
92      - add I/O capability (pkg/mdsio).
93      - adapt utils/matlab/rdmds.m to read this format.
94      for now long-line format not yet supported by pkg/mdsio (& exch2).
95    o shelfice: add a few diagnostics
96    
97    checkpoint58w_post
98    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
99      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
100      (and replace horiVertRatio in NH code).
101      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
102                         and tutorial_plume_on_slope (sensitive to truncation)
103    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
104      directly to drive seaice model (C-grid only)
105    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
106     - reintroduce computation of wind from stress,
107     - compute tau (in exf_bulkformulae.F) from windstress averaged to
108       mass points to avoid tau = 0
109     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
110    o rdmnc.m: make it work with "global" files created with gluemnc
111    o rdmnc.m : some improvements in dealing with singleton dimension
112      (tested on all testreport mnc output files).
113    o genmake2: disable pkg/profiles if netcdf test fails.
114    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
115    o move call to cal_readparms up to make calendar parameters/variable available
116      to all packages
117    
118    checkpoint58v_post
119    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
120      useDynP_inEos_Zc tested.
121    o pkg/exf: changes to properly interpolate/mask/scale initial fields
122    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
123      and portions thereof.  See read_cs.txt for description and examples.
124    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
125      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
126      following the great-circle arc between those 2 points.
127    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
128      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
129    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
130     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
131     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
132     - still needs work (not working with some options ; efficiency to improve)
133       and serious testing.
134     - use this scheme for temperature & salinity in 2 advection test exp.:
135       advect_xy & advect_xz, respectively.
136    
137    checkpoint58u_post
138    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
139    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
140    o testreport: add option "-skipdir" to skip some test.
141    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
142      momentum calculation.
143    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
144    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
145      remove checkpoint.F and the_correction_step.F (no longer used);
146      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
147    o add option (linFSConserveTr) to correct for tracer source/sink due to
148      Linear Free surface
149    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
150    o pkg/thsice: fix reading mnc-pickups
151    
152    checkpoint58t_post
153    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
154    o pkg/mdsio:
155     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
156       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
157       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
158     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
159     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
160       either MDS_READ_FIELD or MDS_WRITE_FIELD )
161     - new S/R (to replace MDSWRITEMETA), which allows to write more
162       informations (variable names, time ...) to meta files.
163     - modify rdmds.m to give back the meta file content.
164    o pkg/diagnostics: change vertical interpolation to be safer, and more
165       flexible (define p-levels to interpolate to in data.diagnostics);
166      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
167       diagnostic pointer.
168    o pkg/seaice: more cleaning up of seaice_growth, added many comments
169    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
170    o fix multi-category seaice:
171     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
172       SEAICE_MULTICATEGORY
173     - fix short wave heat flux
174    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
175       and allow to use EVP solver. Change forward lab_sea: test both EVP
176       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
177    o Initial check-in of lab_sea adjoint
178      (very similar to natl_box_adjoint/code_seaice)
179      * used C-grid and EVP solver
180      * used KPP, GM/Redi
181      * uses inAdExact=.TRUE.
182      * gradient checks fail for both ADM and TLM
183        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
184        f.d. gradients actually seem more problematic than ADM, TLM gradients;
185        issue is related to forward mismatch between g77 an ifort
186    o pkg/seaice: overhaul of thermodynamics
187     - growth.F and groatb.F are replaced by new routine seaice_growth.F
188     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
189     - move a few global fields out of SEAICE.h into seaice_growth.F and
190       make them 2D (FICE/QNETO/ ...)
191     - remove FO (it is the same as QNETO)
192     - introduce a few local fields to avoid modifying external fields such
193       as atemp, etc.
194    
195    checkpoint58s_post
196    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
197      changed exf_set_gen.F so that
198        genperiod=0 means input file is one time-constant field and
199        genperiod=-12 means input file contains 12 monthly means
200    o CG2D: use pre-computed solver main-diagonal (stored in common block);
201      this affects truncation error ; generate new output file for exp. which
202      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
203        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
204        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
205        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
206        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
207        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
208    o start implementation of deep-atmosphere and anelastic formulation
209    o verification: remove 2nd copy of input files and use script "prepare_run"
210      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
211    o mom_common/vecinv/fluxform: fix a few initialisation isssues
212    o profiles: fix for multithreaded case
213    
214    o diagnostics: rename few diags:
215      s/'PRESSURE'/'RCENTER '/g
216      s/'TICE    '/'oceFreez'/g
217      s/'TAUX    '/'oceTAUX '/g
218      s/'TAUY    '/'oceTAUY '/g
219      s/'SWFLUX  '/'oceQsw  '/g
220      s/DIFx/DFxE/g
221      s/DIFy/DFyE/g
222      and add few ocean-forcing diagnostics:
223      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
224    o modifications to pkg/seaice/growth.F and budget.F, which change results of
225      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
226      as actual snow thickness.  It now refers everywhere to effective snow
227      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
228    
229    checkpoint58r_post
230    o modifications to pkg/seaice/growth.F, which change results of
231      lab_sea experiment: fixes pertain to melting snow over open water, to
232      masking EVAP under sea ice, and to using the correct AREA variable for
233      computations of EVAP, PRECIP, HSNOW, and GHEFF
234    o add ability to read bathy, salt, and theta using MNC (off by def)
235    o add flooding algorithm and advection of HSNOW for pkg/seaice;
236      both are turned off by default and do no change any results
237    o seaice advection with pkg/thsice: a step toward the use of non-linear
238      advection scheme, but #ifdef or commented out for now (requires more EXCH).
239    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
240      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
241      in natl_box (affects results @ truncation level: update output.txt)
242    o multi-threading and IO:
243      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
244      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
245        (needed to work with SingleCpuIO): tested in all verif. exp.
246    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
247      affects the results (but none of the verification test uses this scheme).
248    o Adding some pkg/diagnostics capability to pkg/seaice
249      (will certainly be subject to changes)
250    o ctrl: adding new control variables:
251      lwflux, lwdown, evap, snowprecip, apressure, runoff
252    
253    checkpoint58q_post
254    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
255      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
256      high_res_cube configuration by 4% on Columbia.
257    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
258      add (in global_with_exf/code) a version of EXF_INTERP_READ without
259      dynamical allocation (seems to work in multi-threaded).
260    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
261      single CPU io) so that TAF does not have to see EESUPPORT.h
262    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
263    
264    checkpoint58p_post
265    o obcs: stop if obcs is used with useCDscheme = .true.
266    o shelfice:
267     - fix a sign error so that no slip at shelfice interface works
268     - remove stop for combination non-hydrostatic code and shelfice. That does
269       not mean, that the results are correct, but at least they are numerically
270       stable
271    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
272    o added adjoint exch routined for all exch*3d* routines
273      and updated flow directives
274    
275    checkpoint58o_post
276    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
277      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
278    o change controling S/R for writing pickup file (new S/R do_write_pickup)
279      and clean-up reading/writing of pickup files.
280    o fix local version of read/write pickup (NH part) in rotating_tank/code
281    o simplify EXCH interface:
282     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
283     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
284    o added the regrid package
285    o shelfice:
286     - add a simple boundary layer scheme to reduce noise
287     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
288    
289    checkpoint58n_post
290    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
291       local variable (not in common block).
292    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
293      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
294      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
295        to work with SingleCpuIO.
296    o add "_d 0" to real constant of pkg/cfc subroutines ;
297       update exp. cfc_exemple & tutorial_cfc_offline output files.
298    o multi-threading and IO:
299      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
300        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
301      - barrier before and after reading.
302      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
303      - avoid using MDS_WRITELOCAL for LAND pkg output.
304      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
305        common-block variables ; Allows multi-threading with master-thread IO.
306    o change default MAX_NO_THREADS from 32 to 4 ;
307      and stop cleanly when MAX_NO_THREADS is too small.
308    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
309    
310    checkpoint58m_post
311    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
312       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
313    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
314       keep global_ocean.90x40x15 (for AD testing) with former secondary test
315       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
316    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
317        add MITgcm_tutorials (= code + all the tutorials)
318    o ecco, option to compute cost for total ssh (mean+anom)
319    o consistent with addition of ptracer and ssh in pkg/profiles
320    o profiles: adding ptracer and ssh
321    o testreport: change multi-test output-file name
322      (from output.txt.{name} to output.{name}.txt)
323    o profiles: now ok for mutli-tiles case
324    o seaice: add 4 parameters for different advection schemes for area,
325      (effective) seaice thickness, enthalphy, and snow height. Their default
326      is the standard parameter SEAICEadvScheme
327    o calc_gw:
328     - add cosFacU in zonal viscous flux (harmonic.visc.).
329     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
330       of tutorial_plume_on_slope.
331    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
332    o calc_gw: true flux-form, account for horizontal grid spacing.
333      update rotating_tank results, but not plume_on_slope (affected at
334      truncation level, 11 digits).
335    
336    checkpoint58l_post
337    o calc_gw:
338     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
339     - remove side-drag for now (need to fix it); update plume_on_slope results.
340     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
341    o commit code to make SST/SSS weights spatially variable
342      (based on either variable in-situ or variable initial T/S weights)
343    o pkg/ecco:
344      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
345        now based on horizontally varying weights wthetaLev, wsaltLev
346      * cost_averagesflags now returns year indices in addition to day, month
347      * sflux balance is performed on annual basis
348        (sflxumm, sfluxmm2, bal_sfluxmm)
349      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
350        including separate counting and multipliers
351    o pkg/rbcs
352      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
353    
354    checkpoint58k_post
355    o testreport:
356     - always build in dir. "build" (if not there, mkdir build instead of building
357       & running in input)
358     - run in dir run (if it exists), in build otherwise.
359     - call prepare_run (if input/prepare_run exists)
360     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
361    o pkg/exf modifications to interpolation and rotation routines for more
362       reasonable treatment of North Pole singularity: for tracers North Pole
363       value is set to northernmost zonal-mean value, for zonal velocity it is
364       set to zero, and for meridional velocity it is set to northernmost value.
365    o pkg/exf/exf_check_range.F
366     - add tile index to diagnostics and move stop statement to the very
367       end of the routine.
368    o pkg/diagnostics: (diagnostics_main_init.F)
369      define title of isomorphic variables according to the current config.
370    o pkg/thsice with pkg/seaice dynamics:
371    - fix domain of computation (interior only, required for exf) and do exchanges
372    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
373    o towards a standard way of dealing with multi-threading in MONITOR
374      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
375    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
376       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
377    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
378    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
379    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
380       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
381    o tracer advection:
382     - clean-up and simplify calc_common_factors.F
383     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
384       advection subroutine (but still not used within DST advection S/R)
385    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
386    
387    checkpoint58j_post
388    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
389      from file (collects calls previously in FORWARD_STEP)
390    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
391    o adjoint store dir. adjusted accordingly
392    o genmake2
393      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
394    
395    checkpoint58i_post
396    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
397      on wind stress (SEAICEstressFactor defaults to 1.)
398    o Total number of Timers is finite (<=40): comment out 2 non-essential one
399      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
400    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
401      on CS-grid: no longer loosing mass.
402    o exf & curvilinear-grid: no longer modify longitude xC & xG.
403    o pkg/ggl90: fix sloppy output and fix a bug
404    o pkg/seaice: added SEAICEuseEVPpickup parameter
405      - Set to false in order to start EVP solver with
406        non-EVP pickup files when using SEAICEuseEVP
407      - fix sign error in diffusion in seaice_calc_rhs
408    
409    checkpoint58h_post
410    * Modifications for bottom topography control
411      o replace hFacC by _hFacC at various places
412      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
413      o add non-self-adjoint cg2d_nsa
414      o update autodiff support routines
415      o re-initialise hfac after ctrl_depth_ini
416      o works for 5x5 box, doesnt work for global_ocean.90x40x15
417    * Adding verification for 5x5 box (4-layer) bottom topography control
418    
419    checkpoint58g_post
420    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
421       used for mean seasonal cycle, mean diurnal cycle); add an example
422       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
423    o pkg/ggl90:
424      - add parameter (minimum surface kinetic energy)
425      - fix bug (avoiding division by zero)
426    o couple pkg/thsice to pkg/seaice:
427      - modify advection in seaice to accomodate new scalar fields to be advected
428      - only muliDimAdection scheme work with seaice/thsice
429      - mapping of thsice-variables to seaice-variables, back and forth
430      - does not break the verification experiments, but does not give the
431        desired results either
432    o pkg/seaice
433      - make (default) second order advection a bit less confusing?
434    
435    checkpoint58f_post
436    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
437      to pkg/seaice):
438      - new routines thsice_map_exf and thsice_get_exf provide the interface
439      - add an additional formal parameter to thsice_solve4temp
440    o pkg/exf:
441      - add new fields wspeed, snowprecip (to be able to couple to thsice)
442      - correct Stefan-Boltzmann constant
443      - new parameter for longwave surface emittance
444      - separate some stuff from exf_bulkformulae into new routines  
445        exf_radiation, exf_wind
446      - add new parameters and constants: longwave emissivity for ocean, ice
447        and snow, evaporation parameters over ice
448      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
449        either wind from stress or stress from wind
450    o pkg/thSIce:
451    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
452    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
453       and THSICE_CALC_THICKN
454    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
455    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
456      to make debugging easier.
457    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
458    o pkg/bulk_force:
459      - clean-up comments and parameters ;
460      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
461    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
462      generate new output for test-experiment: aim.5l_cs.thSI
463    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
464      testreport accordingly
465    
466    checkpoint58e_post
467    o SEAICE_CGRID adjoint done
468    o R_STAR adjoint implemented.
469      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
470      * need to sort out init. of h0facc, etc.
471    o Make pkg/profile fully independent of ecco,cost, etc. stuff
472      to be able to use it in pure forward.
473    
474    checkpoint58d_post
475    o upgrade simple test-experiment to tutorial example:
476     step.1: duplicate the experiment and (step.2) will remove the old copy.
477      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
478      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
479      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
480      tutorial_global_oce_biogeo    <- copy of dic_example
481      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
482      tutorial_plume_on_slope       <- copy of plume_on_slope
483      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
484      tutorial_global_oce_optim     <- empty for now (David ?)
485      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
486     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
487    o correct a sign problem in cost_scat.F
488    o obcs and ptracers: fix boundary conditions for advections schemes
489      with larger stencil
490    o thsice adjoint: start
491    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
492      completeness
493    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
494      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
495    o ptracers adjoint:
496      * avoid extensive recomputatations
497      * fix missing re-init. of gptr (missed by TAF)
498    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
499      me to turn off the excessive output to STDOUT that this package produces
500    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
501      and add those terms in Vector-Invariant formulation.
502    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
503      if the control period (xx_hfluxperiod etc) is 0
504    o in profiles pkg, clean routines and fix details
505    o in ecco pkg, reading ssh data:
506      fix problem in case the model does not start at iter0=0
507    o fix mnc-pickup/restart for ptracers
508    o new package prifiles:
509      code to compute profile-based cost by Gael Forget
510      (modifs in ecco, ctrl, autodiff)
511    o Benign bug fix in initialization (spotted by M. Mazloff) of
512      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
513    
514    checkpoint58c_post
515    o adjoint: finish NLFS adjoint and provide reference output in
516      verification/global_ocean.90x40x15/results_ad_nlfs
517    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
518      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
519      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
520      with SEAICE_CGRID defined.
521    o move calendarDumps from "data" to "data.cal" and clean-up the code
522      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
523    o add useEXF & useCAL flags (for now, set in hard-coded way)
524    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
525      (were missing in NH mode, and wrong in quasihydrostatic mode).
526      waiting for Chris updated version of calc_gw to add those CALLs.
527    o fix bug in quasihydrostatic S/R ;
528      add a test for this option: global_ocean.90x40x15.qshyd
529    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
530      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
531    o add on/off flag useOffLine for package OFFLINE
532    o seaice:
533      - modify advection so that it works also on the C-grid
534      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
535        problem in multi-tile runs with C-grid
536      - add flags for clipping ice velocities and/or masking solver forcing
537      - fix drag (ocean on ice) formulation and a bug that caused noise in the
538        C-grid solver
539      - added a few comments to seaice_diffusion.F
540      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
541        are now exclusive)
542      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
543        required re-ordering the code a little:
544       + make DAIRN global variable (defined in SEAICE)
545       + move computation of the viscosities eta and zeta into a new separate
546         routine (because I need to recompute them in seaice_ocean_stress.F)
547    
548    checkpoint58b_post
549    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
550      update output.txt of exp. aim.5l_cs.thSI
551    o various mnc cleanups and improvements:
552      + shrink lookup tables by factor of ~4
553      + better error reporting when running out of lookup space
554      + able to handle longer path/file names (up to 500 chars)
555    o adjoint:
556      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
557      - TBD: "hidden" mom_vecinv recomp. in dynamics
558    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
559     (allow to differentiate between forcing components using new integer flags:
560      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
561     and add new flag to put Dissipation tendency out of Adams-Bashforth.
562    o ecco
563      - enable trend removal from SSH anomaly obs.
564    o adjoint
565      - a fix for PmEpR when #undef EXACT_CONSERV
566      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
567      - try to fix "hidden" recomp. in forward_step for NLFS
568        (NLFS seems broken sometimes after I checked it in)
569    o seaice:
570     - add c-grid version of the dynamic solver:
571       + three new routines that are the c-grid substitute lsr, dynsolver
572         and ostres
573       + put a few fields that were local to dynsolver into global common
574         blocks, so that I can move the computation of stresses etc into
575         seaice_lsr (saves coding but may break the adjoint).
576     - replace more hardwired parameters by runtime parameters
577     - add ice masks that mask the rhs of the implicit solvers where there
578       is no ice (commented out in seaice_dynsolver, because i am not sure
579       if this works properly), eventually this should replace the clipping
580       of ice velocities in seaice_dynsolver to +/-40cm/s.
581    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
582      include it only where its needed
583    o move balancing of fluxes before the call of external_forcing_surf
584    o seaice:
585      - correct units of turning angles (now they are really in degrees)
586      - move computation of GWATX/Y out of main routine into dynsolver
587      - initialize GWATX/Y in seaice_init
588    o Apply mask on Fresh-Water flux (needed for SSH forcing).
589      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
590    o seaice: add runtime flags for turning angles (default to zero)
591    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
592      and trend from exf forcing and ctrl control adjustments
593    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
594      (since checkpoint57x_post)
595    o change the default rotation period to 86164.s = the Earth rotation
596    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
597      and based on a reference stratification. Tested within hs94.cs-32x32x5.
598    o seaice advection: add code for choosing between the default (2nd order
599      central differences) and multiDim advection schemes provided by
600      pkg/generic_advdiff
601    o seaice:
602      - removed all references to SEAICE_GRID.h fields from
603        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
604        (cubed-sphere configuration will change a little)
605      - grid computations in seaice_init are obsolete now.
606      - cleaned up code a little so that is easier to read (hopefully).
607      - added new (better?) discretizations of default advection and diffusion
608        (turn on with SEAICEuseFluxForm)
609      - replace 1 in 3d global fields by kSurface in growth.F
610      
611    checkpoint58a_post
612    o seaice:
613      - bug fix in advect.F
614    o shelfice:
615      - separate shelfice load anomaly from pload (breaks with time
616        dependent forcing), => introduce constant field shelficeLoadAnomaly.
617        Its default is 0., but it may be computed more cleverly from (unknown)
618        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
619        done offline. A good approximation of the pressure load anomaly is
620        necessary to avoid large initial adjustment processes underneath
621        deep-reaching shelfice.
622      - small fix in ISOMIP shelfice_thermodynamics
623      - add more sophisticated thermodynamics of Hellmer (1989), this is
624        now the default
625      - give a few constants more intuitive names
626    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
627      if bulk formulae are used in long integration (especially EmPmR). Turn
628      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
629      if balancePrintMean, the imbalance that is substracted is printed to
630      STDOUT.
631    o fix bug (typo) in obcs_apply_eta.F
632    o add a new package shelfice which enables us to model the circulation
633      underneath shelf-ice with draughts of hundreds of meters.
634     - works
635     - to do: + include improved thermodynamics
636              + check whether kSurfC (from model/inc/SURFACE.h) can be used
637                instead of new field kTopC
638              + can we use topoFile, Ro_surf and existing code in ini_depth.F
639                instead of new field R_shelfIce and new code in ini_depth.F
640                and ini_mask_etc.F?
641              + adjust vertical mixing schemes?
642    o seaice pkg:
643     - add a cpp-flag to include a simple formula for a salinity dependent
644       freezing point of sea water at the surface
645     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
646       meridional stresses are now different (and hopefully correct)
647    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
648       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
649       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
650    o pkg/diagnostics: add options and parameters for regional-statistics
651       diagnostics ; define regions by reading a region-mask from a file
652       (might add other options later)
653    o pkg/bulk_force:
654     - add option and parameters to use AIM surface-flux formulae.
655     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
656       others forcing fields (defined in PARM05, parameter file "data") are loaded
657       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
658     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
659     - use the right EXCH call for uwind,vwind (to work on CS-grid).
660     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
661       and parameters (note: calcWindStress replaces .NOT.readwindstress).
662     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
663    
664    checkpoint58
665    o add "--embed-source" option to genmake2 which, when the supporting
666      tools can be compiled (as determined by genmake2) will turn on the
667      embed_files package which then embeds the entire MITgcm source code
668      (*.[fFhc] + Makefile) used for the build within the executable
669      - requested by CNH but off by default
670      - adds a paltry <9MB to the mitgcmuv executable in most cases
671      - only writes the output when useEMBEDSRC in eedata is true
672    o clean up 3-dim. relaxation codes:
673      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
674      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
675      * Thanks to Tom Haine for testing!
676    
677    checkpoint57z_post
678    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
679      affects output (@ truncation level) of exp. plume_on_slope ; updated.
680    o fix the pickup behavior for obcs in combination with ptracers
681    o fix a bug in ptracers_external_fields_load
682    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
683      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
684    o transfered surface NH pressure to eta field (if exactConserv).
685    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
686         and update lab_sea output.txt file.
687    o completing 3-dim. relaxation code: additional term
688         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
689      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
690      * At compile time, in "EXF_OPTIONS.h" set
691          #define  ALLOW_CLIMTEMP_RELAXATION
692          #define  ALLOW_CLIMSALT_RELAXATION
693      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
694          tauThetaClimRelax3Dim = 15552000.0,
695          tauSaltClimRelax3Dim  = 15552000.0,
696      * 3 cases:
697          1) Use a constant-in-time 3-dim. field
698          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
699          3) Real-time relax. to time-evolving prescribed field
700    o Adding Laplacian-type smoothness constraint on
701      initial and boundary (forcing) controls (ic, bc)
702      * enable at compile-time via
703        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
704      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
705      * Absolute scale somewhat unclear so far
706      * no area weighting was included since no other cost term does so far
707    
708    checkpoint57y_post
709    First step for a NLFS adjoint
710    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
711    o new init. routines for calc_r_star, calc_surf_dr
712    o still need to deal with ini_masks_etc
713    o testreport seemed happy
714    checkpoint57y_pre
715    
716    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
717    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
718    o add new offset feature to offline pkg (plus minor cleanup)
719    o cfc fixes for final year of integration
720    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
721      be in GCHEM_OPTIONS).
722    
723    checkpoint57x_post
724    o fix testreport Pb in multiple test experiment.
725    o cleanup our namelist syntax in verification:
726      - make it more F95 standards compliant (some work still needed)
727      - allows the vast majority of our tests to work with gfortran
728    o Non-Hydrostatic:
729     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
730     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
731    o Allow to apply AB on T,S rather than on AB(gT,gS):
732     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
733     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
734       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
735     - need a "clever" read_pickup to restart from the other AB formulation
736    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
737    o remove some unused variables (reduces number of compiler warnings)
738    o adjoint
739      * Disable useVariableViscosity for adjoint for time being
740        (there are a number of extensive recomputations)
741      * Initialize certain variables needed for adjoint
742    
743    checkpoint57w_post
744    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
745                 fix the singleCpuIO RS version of MDSWRITEFIELD
746       and add a WARNING if using globalFiles=T with multi-processors.
747    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
748      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
749    o tracer advection scheme:
750      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
751       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
752       was not very convenient).
753      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
754       (further tests needed for the implicit DST & Flux-Limiter schemes).
755    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
756      and sRef for convenience, handy, when you want to initialize
757      ptracers in a large domain with a constant non-zero value. Also,
758      untangle ptracers_init.F a little.
759    
760    checkpoint57v_post
761    o change dome exp. to use variable viscosity in side-drag terms.
762    o remove all the files from the cfc_offline test since they are now
763      incorporated into tutorial_cfc_offline which has been producing
764      identical results for a few days of testing
765    o add new parameter: sideDragFactor to enable half-slip-side BC
766      and change side-drag S/R to use viscosity from mom_calc_visc
767      (can switch back by setting sideDragFactor=0.); affects results at
768      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
769       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
770    o vorticity & strain are now computed without masking, to account for
771      no-slip-side BC in variable viscosity calculation ; mask is applied
772      anyway later on, before computing advection/coriolis terms.
773    o modify exp4 to test new obcs support for reading from external files
774      and for passive tracers
775    o fix behavior of ptracers_monitor when monitor output is written to a
776      netcdf-file; still not independent of monitor.F (writes in the same
777      file).
778    o change default value of tRef (put a uniform, meaningful value for ocean
779      & atmos) and initialize sRef (was missing, as Martin mentioned).
780    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
781      to be proportional to enstrophy dissipation length.  Thus,
782       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
783      This is now consistent with Smagorinsky and with the manual.
784    
785    checkpoint57u_post
786    o OBCS and PTRACERS: add open boundary support for passive tracers
787      - either use homogenous (pseudo) v.Neumann conditions or prescribe
788        OB-values from file; this is not different from the way theta and salinity
789        are treated
790      - however, Orlanski-radiation conditions are not supported, and the model
791        will stop if you use pTracers and Orlanski at the same time.
792      - beefed up the rountine obcs_external_fields_load: now only those open
793        boundary values are overwritten with values from files for which there
794        are really files, otherwise the OB-fields remain untouched. This makes
795        it possible to use different OBs at different ends of the domain (as
796        with EXF)
797    o reduce number of exch calls in shap_filt (s2).
798    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
799      truncation level) 4/5 MLAdjust test results (11&12 digits match).
800    
801    checkpoint57t_post
802    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
803    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
804      same truncation, independent of the face number: affects affects several
805      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
806    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
807      note that biharmonic viscosity + no-slip was not tested in any experiment.
808    o fix bug in non-linear free-surf side-drag ; generate new output for
809      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
810    o make mnc honor the writeBinaryPrec flag for most kinds of output
811    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
812    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
813      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
814    o add brackets in multi-terms sum to get same truncation, independent of
815      the face number (manage to get exactly same value of gU,gV at the cs-edge)
816      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
817    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
818      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
819      a maximum grid-scale Reynolds number.  Also, changes all length calculations
820      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
821      Suggested values of viscosity parameters found in mom_calc_visc.
822      Many new viscosity diagnostics available.
823    
824    checkpoint57s_post
825    o Add clearing-house for viscosity calculations, mom_calc_visc and
826      correct numerous bugs in LeithD and Smagorinsky discretizations.  
827      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
828      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
829      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
830      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
831      The Strain-Tension form is now called with useStrainTensonVisc=.true.
832      ViscAhStrain and viscAhTension are now retired.
833    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
834    o In response to JMC's bug report, genmake2 now ignores any soft-links
835      that it finds in the *current* directory when searching for files.
836      Soft-links found in any other source directories will still work as
837      they did before.
838    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
839      a C routine to unlimit the stack size
840    o mnc-ify pkg/aim snapshot vars
841    o mnc-ify pkg/land as requested by Daniel
842    o various changes to mnc including:
843      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
844      - output can now be grouped so that all files within a group
845          change the ITER portion of their names in lock-step together
846      - can now read ("global") PER-FACE (in addition to PER-TILE) files
847          and works with both EXCH1 and EXCH2 (but needs more testing)
848      - writing works for all verification test cases w/ g77 on Linux
849    
850    checkpoint57r_post
851    o make MNC variable initialization happen earlier
852    o add diagnostics for (almost) each term of the momentum Eq.
853    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
854    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
855    o remove MINIMAL_TAVE_OUTPUT option ;
856      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
857    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
858      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
859    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
860    o add time-dependent SST, SSS control
861    o cost terms in ecco/ modularized (new cost_generic.F)
862    o cost_averages routines are modularized (new cost_averagesgeneric.F)
863    o new infrastructure for seaice model vs. obs misfits in seaice/
864      * driver from the_main_loop.F is seaice_cost_driver.F
865      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
866      * gradient check in Exp. 6a of natl_box_adjoint/
867    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
868      (see README file)
869    
870    checkpoint57q_post
871    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
872    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
873      - bug was reported by Jean-Michel and Ian Fenty
874    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
875      update exp. cpl_aim+ocn output.
876    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
877      Needed for high-res. runs with large global files
878      to be able to limit tapelev size
879    o Changed some tests for adjoint:
880      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
881      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
882      * global_ocean.90x40x15/ back to default 3-level checkpointing
883    o Modifications to enable scripted COMMON to MODULE conversion
884      * verification/OpenAD/code/ has necessary scripts and description;
885      * converts, compiles and runs successfully;
886    
887    checkpoint57p_post
888    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
889    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
890      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
891    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
892    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
893      (was already the case for dissipation with mom_vecinv,
894       and also the case for grad.PhiHyd when staggered-timeStep)
895      This will allow to put dissipation out-off the AB time-stepping.
896     Unfortunately, affects truncation error. Update output of exp. that "fails"
897      (cg2d matching number) and leave the others for later: front_relax(10),
898      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
899      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
900    
901    checkpoint57o_post
902    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
903      (2) its ready to be documented during the 20050801 DocFest
904    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
905      for ideal_2D_oce and lab_sea on linux_ia32_g77
906    o set to #undef CTRL_SET_OLD_MAXCVARS_30
907      in global1x1_tot/code_seaice_adj to access indices 32, 33
908      (worth another tag)
909    
910    checkpoint57n_post
911    o adding precip control xx_precip 32
912    o adding swflux control xx_swflux 33
913    o Replacing 10 forcing penalty cost routines by 1 generic.
914    o Implementing partitioning in time-mean and variable adjustment
915      for atmos. state.
916    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
917    o in natl_box_adjoint:
918      * updated exp 1 to 10
919        (but does not have time-mean vs. variable split results yet)
920    o updated global1x1/*_seaice_adj/
921      to incorporate latest changes
922    o enable useSingleCpuIO for mdsio vector routines
923      (applies in particular to tapelev I/O)
924    o removed inefficient K-loop in all active_file*control*.F
925    
926    checkpoint57m_post
927    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
928      and advect_cs (use EXCH-2 and standard cs-32 grid files).
929    o pkg/exch2: filling of face-corner halo regions is optional
930      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
931    
932    checkpoint57l_post
933     tag before updating tutorials (pre-release-2)
934    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
935       for output and interpolation of input fields onto model grid)
936    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
937       Affects results of exp. rotating_tank ; update output.txt.
938    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
939          and taking the square quantity and/or using a fraction-weight field.
940    o fix aim_diagnostics_init.F mate numbers.
941    o add mnc output capability to diagnostics/diagstat and update
942      our cvsignore files for the ACSII output generated
943    
944    checkpoint57k_post
945    o lab_sea now uses diagnostics package and provides a suite of
946      new EXF diagnostics output.
947    
948    checkpoint57j_post
949    o exf
950      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
951        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
952        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
953      * extended diagnostics output
954        - now includes all EXF variables
955        - hs, hl moved to common block
956        - separate S/R for diagnostics, called after ctrl vector is added
957        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
958        - EXFqnet contains true Qnet (i.e. includes qsw)
959      * updated verif. lab_sea, global_with_exf
960      * Rearranging hflux (exf_mapfields -> exf_getforcing)
961        to ensure that diagnostics sees a true EXFqnet
962    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
963    o diagnostics pkg: change pointers so that 1 diagnostic can be used
964      several times with different frequencies.
965    o mnc-ify the thsice package as requested by Daniel Enderton
966      - the monitor--MNC output needs work
967      - many attributes need to be added (most are currently blank)
968    o mnc-ify theaim_v23 package as requested by Daniel Enderton
969      - many attributes need to be added (most are currently blank)
970    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
971    o add Sadourny like discretization to the 4th.O vorticity advection scheme
972    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
973      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
974         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
975    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
976     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
977    
978    checkpoint57i_post
979    o Diagnostics package was changed: diagnostic allocation is now deactivated
980      by setting an empty file name in the namelist (used to be by setting 0 frequency)
981    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
982      add 1rst Order upwind vertical Shear.
983    o add a quick fix for A/B checkpointing in OFFLINE mode
984    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
985      end-run around the C/Fortran linking horror in eesup/src/timers.F
986    o added pkg/runclock: allows user to terminate run based on wall clock
987    o added non-hydrostatic scaling parameter: nh_am2
988    o pkg/my82: futile attempt to make results compiler-independent by adding
989      some "_d 0", etc. no effect.
990    o for mnc output, fill the 'T' coordinate var with myTime and create a
991      separate 'iter' variable for iteration count
992    o pkg/diagnostics:
993      add new capability: output of Global/Regional & per-level statistics ;
994      tested against monitor output (including land & thSIce) on various exp.
995    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
996    
997    checkpoint57h_done
998      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
999      data.diagnostics, data.gchem, data.ptracers) is done.
1000    
1001    o pkg/diagnostics: prepare for Global/Regional statistics.
1002      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1003    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1004      and rename it: DIFFERENT_MULTIPLE
1005    
1006    checkpoint57h_post
1007    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1008    o pkg/diagnostics: change output frequency, now in seconds (instead
1009      of Nb of iterations). This requires to change data.diagnostics.
1010    checkpoint57h_pre
1011    
1012    o in mnc, let the user create the output dir if both mnc_outdir_date
1013      and mnc_outdir_num are false
1014    o add fflags() to pkg/diagnostics which allows one to specify, on a
1015      per-file basis, the file precision [default behavior is unchanged]
1016    o added diagnostics to pkg/kpp, including computation of mixed layer
1017      depth based on a temperature/density criterion
1018    o updated verification/natl_box to test the new pkg/kpp diagnostics
1019    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1020    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1021    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1022      not mnc -- this mistake was found by JMC and is now corrected
1023    
1024    checkpoint57g_post
1025    o add Adams-Bashforth 3rd Order time stepping:
1026      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1027      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1028    checkpoint57g_pre
1029    
1030    o make lambda[Theta,Salt]ClimRelax spatially varying
1031      (default remains spatially uniform constant based on tau)
1032    o added new control variables
1033      * init. uVel, vVel, etanN
1034      * lambda[Theta,Salt]ClimRelax
1035    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1036      (suggested by G. Forget)
1037    
1038    checkpoint57f_post
1039    o add parameter "baseTime" = model base time = time at iteration zero
1040      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1041      account for baseTime shift
1042    o move Coriolis arrays from PARAMS.h to GRID.h
1043    checkpoint57f_pre
1044    
1045    o mnc-ifying the seaice package
1046    o introduced an alternative length scale calculation for use in the limiting
1047      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1048    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1049    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1050      as well as grad(vort3).  Made it compatible with both approximate form
1051      for the cubed sphere and full form of these gradients.  Added flag
1052      useFullLeith to select between approximate and full form.  
1053    o add "d0" in getcon.F to reduce differences between compilers/platforms
1054      update output.txt of exp. fizhi-gridalt-hs
1055    o change port_rand funtion to allow to set the seed.
1056    o fix obscure MNC bug involving conversion between reals and integers
1057      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1058        new version is now more standards-compliant
1059    o adjoint-related modifications
1060      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1061      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1062      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1063    
1064    checkpoint57e_post
1065    o Adding eddy stress controls a la Ferreira et al.
1066    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1067    
1068    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1069      update output.txt of exp. fizhi-gridalt-hs
1070    o add more "Z" dimensions and associated coordinate vars to MNC
1071    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1072    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1073      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1074      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1075      months and years.  Requires pkg/cal.
1076    o diagnostics: add pickup functionality
1077      - off by default for backwards compatibility
1078      - current version only uses MDSIO -- MNC will be added
1079    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1080    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1081    
1082    checkpoint57d_post
1083    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1084    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1085      output from the diagnostics package
1086    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1087    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1088      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1089    o add coordinate variables to the MNC output from the diagnostics package
1090    o change MNC-flags default value: true when useMNC=TRUE
1091    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1092      the ability (off by default) to read the grid information using MNC
1093    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1094    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1095    o do snap-shot diagnostics at the middle of the time-interval (instead of
1096      at the end).
1097    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1098      new test for AIM with thSIce + slab-ocean
1099    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1100    o move state variable diagnostics to the beginning of the time step ;
1101      (note: still needs some work specially for snap-shot diagnostics)
1102      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1103    
1104    checkpoint57c_post
1105    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1106    o generate new output.txt files on faulks with g77 & the new -ieee option
1107    checkpoint57c_pre
1108    
1109    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1110      update output.txt of exp. global_ocean.90x40x15
1111    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1112      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1113    o add saltFlux(+File) forcing capability with periodicExternalForcing
1114    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1115    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1116    o improvements for the MNC output from DIAGNOSTICS:
1117      - correct handling of the unlimitied dimension
1118      - all dims now have associated coordinate variables
1119      - variables located at U, V, and Corner ("Z") points are now written
1120        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1121        *all* data points are output
1122    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1123    o added pkg/seaice/seaice_monitor.F
1124    o mdsio_readfield.F can now read files visible only to master MPI process.
1125    o pkg/seaice: some test code for ice-modified ocean stress
1126    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1127      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1128      spurious negative numbers for precipitation and humidity.  Will cause
1129      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1130    o pkg/ctrl/
1131      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1132        May be enabled via doPackDiag
1133      *  introduce z-scaling of
1134         + gradient (doZscalePack) and
1135         + control (doZscaleUnpack)
1136    o pkg/mdsio/
1137      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1138      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1139    
1140    checkpoint57b_post
1141    o simplify options in diagnostics_fill arguments (remove weird combinations)
1142    o fix MNC coordinate variables so that they now contain per-face index
1143      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1144      general, EXCH2 grids are only aligned to a "local" coordinate system
1145    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1146    o Implement instantaneous output within pkg diagnostics:
1147      setting a negative frequency in data.diagnostics produces
1148     "snap-shot" output (as opposed to time-average if freq > 0)
1149    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1150      NOTE: change ptracer diagnostics name: use 2 characters to work with
1151            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1152    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1153      becomes the coordinate variable for the 'T' dimension
1154    o add CF-style coordinate variables to MNC
1155      - just a first cut:  numbers are meaningless on the cubesphere and
1156        missing along the T axis but otherwise it works!
1157    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1158    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1159    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1160      this is based directly on what the model compute, so that the content of
1161      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1162    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1163    o clean up build options files for SunOS, in particular
1164      - remove -traditional from xmakedepend
1165      - change -xarch=v9 to -xarch=native for f77
1166      - restore use of make (not gmake)
1167      - add CC=gcc if using g77
1168    o changes per discussion of AM, JMC, & EH3 today:
1169      - move redundant "grid" variables out of "state" -- in preparation of
1170        creating proper CF-style coordinate variables and in recognition
1171        that any/all grid variables can be easily copied (eg. w/NCO) from
1172        the grid files into any of the other NetCDF files
1173      - *always* output grid variables with MDSIO (this will eventually be
1174        changed)
1175      - output MNC grid file if useMNC is true
1176    o every instance of _END_MASTER() has been found and replaced with
1177      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1178      preprocessors
1179    o re-arrange diagnostics pkg initialisation:
1180     - allow each package to extend the available diagnostics list
1181     - add some checking and fix small problems (multi-threaded, ...)
1182     - new S/R diagnostics_fill (replace fill_diagnostics):
1183       look through the short list of active diag. (instead of the long list)
1184       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1185    
1186    checkpoint57a_post
1187    o this set of changes restores TAMC compatibility
1188      tested for global_ocean.90x40x15 adjoint on trough
1189      (what a pain)
1190    
1191    checkpoint57a_pre
1192    o some modifs in tools/build_options for sunos
1193    o call ctrl_pack for ctrl at end for optimcycle=0
1194    
1195    checkpoint57
1196    o add horizontal bi-harmonic viscosity for vertical velocity
1197      - new parameter viscA4W (defaults to viscA4)
1198      - affects only non-hydrostatic code
1199      - to be done: no-slip lateral boundary conditions
1200    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1201    o implement Implicit Vertical advection for pTracers
1202    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1203      (implemented also for implicit vertical diffusion & advection)
1204    o OBCS: extend application of tracer open boundary conditions
1205      to a strip beyond the boundary of width Olx/Oly
1206    o add call monitor to TAF set of required calls (flow directives)
1207      and include in natl_box_adjoint
1208    o untangle a few ifdefs related to cost, ctrl, autodiff
1209      untangel a few ALLOW_ECCO_OPTIMIZATION
1210    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1211      (theta2, salt2 in ecco_cost_weights)
1212    
1213    checkpoint56c_post
1214    o OBCS as control variables
1215      - update ctrl_ad_diff.list, obcs_ad_diff.list
1216      - remove balance of obcs controls from default
1217      - fix index bug nobcs in ctrl_init
1218      - fix dummy fields filen in ctrl_pack
1219      - add dummy weights for obcs
1220    o lsopt: comment out fort.94 output
1221    o optim:
1222      - remove unnecessary header files
1223      - adjusted namelists
1224      - add xerbla.F to Makefile
1225    o exf:
1226      - multiple modifications of exf_check_range
1227      - unit change in exf_init_runoff from [m/year] to [m/s]
1228    o mdsio:
1229      - i/o-vector change debugLevel from debLevA to debLevB
1230    
1231    checkpoint56b_post
1232    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1233      is called from DO_THE_MODEL_IO
1234      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1235      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1236      - clean up PTRACERS_WRITE_TIMEAVE a little
1237    o add another verification experiment that tests both the cfc-pkg and
1238      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1239      reactive tendencies treated inline with regular timestepping
1240    o testreport previously did a lousy job of comparing small numbers, so
1241      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1242      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1243      testreport.
1244    o ptracers_monitor: bug fix for MPI
1245    
1246    checkpoint56a_post
1247    o GCHEM: finish reorganizating the package
1248      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1249        (introduces another 3D-array for each passive tracer, but only if
1250        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1251        gchemTendency is not needed because the timestep is done separately)
1252      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1253      - GCHEM is now---more or less cleanly---separate from PTRACERS
1254      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1255        so clear to me how that should be done in a general way.
1256    o CFC: improve formatting of output in CFC_ATMOS
1257    o PTRACERS:
1258      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1259        that ALL experiments with ptracers enable can be checked. This makes
1260        GCHEM_MONITOR obsolete.
1261      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1262        monitorFreq
1263      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1264    o add PTRACERS (PTR0[1-5]) to testreport output
1265    o exf_check_range:
1266      * default changed to .TRUE.
1267      * will check values for niter0 if debLevA, every timestep if debLevB
1268      * STOP in exf_check_range if 'out of range'
1269      * range chosen generous to allow for potential extema
1270      TBD: a version with stricter range
1271           permitted range would be runtime parameters
1272    o GMredi:
1273      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1274      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1275      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1276    o GCHEM:
1277      - move call to GCHEM_FORCING_SEP, so that it is now called before
1278        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1279      - introduced a useGCHEM runtime flag and applied it everywhere.
1280      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1281        this flag is now only visible within GCHEM-pkg routines.
1282      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1283        be replaced by a 3D array that is computed before thermodynamics; for
1284        this, the tracer ID iTracer had to be included into the parameter list
1285        of ptracers_forcing
1286      - set up forward_step to call gchem_forcing, that will replace
1287        gchem_forcing_int in ptracers_forcing
1288      - cleaning up
1289    o small cleaning of exch2: remove files that are also in eesupp/src
1290    
1291    checkpoint56
1292    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1293    o mnc: cleanup "full" files--fixes out-of-memory problem
1294    o ECCO-GODAE
1295      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1296      * fully merged and updated from SIO code
1297        windstress sign change affects
1298        - exf_inscal_[u/v]stress
1299        - sign of xx_tau[u/v] adjustments
1300        - signs in cost_scat
1301      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1302      * natl_box_adjoint updated and compressed
1303      * 2-level checkpoint switch added
1304        (tested in EXP. 1 of natl_box_adjoint)
1305      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1306    o SVD
1307      * first complete, non-hacked version for SVD calculations
1308      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1309        performed via direct access files admtlm_vector.it????
1310        (via ctrl_[un]pack)
1311      * optimcycle is used for ARPACK iteration counter
1312        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1313      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1314        and add linear transforms where necessary
1315      * controls are initial/final SST, SSS (can be extended; need to check
1316        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1317    o mdsio: filename info to both stderr, stdout
1318    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1319      from sign change
1320    
1321    checkpoint55j_post
1322    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1323      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1324    o add consistent build directories and .cvsignore files to verification
1325    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1326    o make all subroutines 30 or less characters in length for certain older
1327      compilers to work (a thorough search only turns up two routines in
1328      pkg/ptracers)
1329    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1330      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1331    
1332    checkpoint55i_post
1333    o change arrays for total vertical diffusivity (2.D if explicit,
1334      3.D if implicit) ; each ptracer uses its own background value.
1335    o added mnc/NetCDF output capability to ocn_compon_interf
1336      - added bits to verification/cpl_aim+ocn so that it can run on
1337        ITRDA and other clusters without the mpirun "-wd" option
1338    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1339      configuration
1340    o give MNC the ability to create additional files rather than
1341      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1342      - the default is just less than 2GB which is a practical limit
1343        on many systems
1344    o Compute the non-local term using either KPP vertical diffusivity (=default)
1345       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1346    
1347    checkpoint55h_post
1348    o add verification test "vermix"
1349    o remove all the *_ioinc flags and replace with the single global
1350      outputTypesInclusive flag
1351    o allow to set a vertical profile of vertical diffusivity for T & S
1352    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1353    o useMNC moved from data.mnc to data.pkg
1354    
1355    checkpoint55g_post
1356    o Renaming carbon AD experiments to comply with testreport conventions
1357    o Updating adjoint of Held-Suarez hs94.1x64x5
1358    o Fixing directives for non-ECCO forward_step, after ECCO directives
1359      have been fixed to avoid recomp. of do_oceanic_phys
1360      Works well for global_ocean.90x40x15,
1361      but recomp. issue remains for carbon
1362    o Updating adjoint output for natl_box_adjoint after
1363      pkg/ecco has been modified (see taga c55d_post)
1364    
1365    checkpoint55f_post
1366    o rename to timeave_init_fixed
1367    
1368    checkpoint55e_post
1369    o some delicate re-shuffle of store directives to avoid one
1370      extra call of do_oceanic_physics
1371      affects ecco_the_main_loop.F, do_oceanic_physics.F
1372      checkpoint_lev1_directives.h
1373    o NB: this may break global_ocean adjoint temporarily,
1374      but it is clear how to fix it. Will do later, need this now.
1375    
1376    checkpoint55d_post
1377    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1378    o ecco_cost_weights is modified to 1x1 runs
1379    o modifs to allow observations to be read in as
1380      single file or yearly files
1381    o enable to read exf forcing fields as either
1382      single file or yearly files (flag useExfYearlyFields)
1383    checkpoint55d_pre
1384    
1385    o switch between 2-level and 3-level checkpointing
1386    o add ability of MNC to write local and "partial" (eg. 2D slices where
1387      the full 3D field is never actually stored) arrays to NetCDF files
1388      with the correct (that is, the complete multi-dimensional) set of
1389      array indicies
1390      - used in mom_vecinv() to write the diagFreq output
1391      - tested (demonstrated) in verification/aim.5l_cs
1392    o further mnc-ification
1393      - add verification/lab_sea to the list with mnc setups
1394      - fix undefined mnc v-names in cd_code
1395      - add kpp to mnc output (both snapshot and timeave)
1396    o non-hydrostatic code
1397      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1398        in calc_gw.F
1399      - defaults to viscAh
1400      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1401        friction or Leith) in non-hydrostatic mode, as long as there is
1402        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1403    o pkg/cost
1404      extend simple cost functions to treat time mean quantities
1405      (T,U,V) via cost_accumulate_state from cost_tile
1406    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1407        be 2 times larger than the minimum size the advection scheme requires.
1408        now get a perfect conservation of salt in advect_cs test-exp (updated)
1409    o GGL90 (Gaspar's TKE mixed layer)
1410      - add horizontal diffusion of TKE, requires exchanges in
1411        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1412        default. In OPA there is no horizontal diffusion of TKE but the
1413        mixing coefficients are computed from a horizontal average of TKE of
1414        6 points or so. I think that diffusion has a little more physical
1415        justification.
1416      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1417        was in vain)
1418      - mask tke-variable in ggl90_init
1419    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1420    o fix biharmonic diffusion on CS-grid.
1421    o more obcs stuff
1422      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1423        for reading boundary values. This routine is called from
1424        obcs_prescribe_read
1425      - updated obcs_check
1426      - changed sponge layer relaxation parameter units for days to seconds
1427      - turned off sponge layer by default
1428      - changed argument list of OBCS_CALC to myTime+deltaTclock
1429      - fixed about 35 bugs in obcs_external_fields_load
1430    
1431    checkpoint55c_post
1432    o obcs stuff
1433      - new runtime flags useOBCSprescribe, useOBCSbalance
1434      - re-arranged obcs_calc
1435      - moved exf_getobcs to obcs_prescibe_read
1436        obcs_prescibe_read is called after ORLANSKI stuff
1437        and independent of it (executable can contain all).
1438      - updated obcs_check
1439      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1440        These may be necessary only if tangential velocities are
1441        prescribed at OB, not sure, needs testing.
1442    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1443      which simplifies the calls and passes the ifc check-bounds test
1444    
1445    checkpoint55b_post
1446    o add a 2D scalar, Z location, exchange_2 routine.
1447    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1448      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1449      affects advect_cs results (for the wrong reason): update output.txt
1450    o use a more standard discretization for biharmonic viscosity ;
1451     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1452      affects results of dome set-up: update output.txt
1453    o fix gad_advection.F (CubedSphere part), back to version 1.23
1454    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1455    
1456    checkpoint55a_post
1457    o merged code to
1458      * prescribe/read time-dependent open boundaries
1459        (works in conjunction with exf, cal)
1460      * sponge layer code for open boundaries
1461      * each boundary N/S/E/W now has its own CPP option
1462        (healthy for the adjoint)
1463    
1464    checkpoint55
1465    o up-to-date adjoint of previous breaks
1466      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1467      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1468      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1469      - carbon: * remove tr1-related adjoint verification
1470                * add ptracer as control variable
1471    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1472      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1473    
1474    checkpoint54f_post
1475    o in verification/carbin/ remove experiment related to
1476      ALLOW_PASSIVE_TRACER (array tr1 etc)
1477      code_ad/ input_ad/ results_ad
1478    
1479    o add two new packages
1480      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1481        + subject to optimization (memory)
1482      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1483        + subject to reordering (many GOTOs in the original code)
1484        + so far opps is called for every (i,j) point, and then operates in
1485          the vertical; one may want to reorder the scheme in order operate in
1486          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1487          fields)
1488    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1489      - all verification tests compile and run with linux_ia32_g77
1490      - defaults are compatible with current input files--nothing
1491        should change if you were not previously using MNC
1492      - MNC output has been added in numerous places (eg. timeave)
1493        but there are still a few writes not yet do-able with MNC
1494        (this is in progress)
1495      - flags now allow for either/or/both use of MDSIO and MNC and
1496        documentation will soon follow
1497      - numerous small formatting cleanups for ProTeX
1498    o add version info (via BUILD_INFO.h) to MNC and stdout
1499    
1500    checkpoint54e_post
1501    o add two new packages
1502      - pp81 (Packanowski and Philander, 1981), Richardson number and
1503        stratification dependent mixing
1504      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1505      - these scheme operate in a similar manner as KPP (without ghat, of
1506        course), however there is only one diffusivity that is used for both
1507        temperature and salinity (and passive tracers)ç
1508    o add offline package
1509    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1510      provided by Stephanie Dutkiewicz
1511    o genmake2: add ability to search for C compilers and cleanup test output
1512      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1513    
1514    checkpoint54d_post
1515    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1516    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1517      leading to additional shift by 5 days each year of integration
1518       (i.e. leading to considerable offset over the years)
1519    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1520    o start with no AB and no initial filtering (staggerTimeStep):
1521      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1522    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1523      (external loading & cpl import/export stay in forward_step.F)
1524    o update coupling interface to work with new staggerTimeStep
1525    o change MDSIO ptracers_pickup.
1526    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1527    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1528    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1529    
1530    checkpoint54c_post
1531    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1532      this affects (truncation error) output.txt of test-exp:
1533       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1534    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1535    o change Qnet to always be the net heat flux, (+upward).
1536      affects (truncation error) output of natl_box exp.: updated
1537    o define the max number of passive tracers in PTRACERS_SIZE.h
1538    o start to test mnc routinely in exp0
1539    o add sea-ice loading (sIceLoad) as a new forcing field.
1540    
1541    checkpoint54b_post
1542    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1543       impressive on Altix and Opteron systems)
1544    o diagnostics can now write NetCDF files through the mnc package
1545    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1546    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1547    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1548      affects (truncation error) output of lab_sea & natl_box exp.: updated
1549    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1550    
1551    checkpoint54a_post
1552    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1553    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1554    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1555    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1556      + internal_wave (shift in writing cg2d_ini_res)
1557    checkpoint54a_pre
1558    
1559    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1560      - modified verification/lab_sea and natl_box_adjoint accordingly
1561    
1562    checkpoint54
1563    checkpoint53g_post
1564    o prepare splitting of thermodynamics: store convect.counter in common block
1565    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1566      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1567    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1568    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1569    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1570    o restore adjointability
1571    
1572    checkpoint53f_post
1573    o modifications that affect AIM experiment results (update output.txt):
1574      - no advection of S at top interface Nr (pkg/generic_advdiff)
1575      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1576    o AIM pkg:
1577      - include stability function into surf.Flux derivative relative to Tsurf
1578      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1579    
1580    checkpoint53e_post
1581    o merged cylindrical coord configuration
1582    o added rotating_tank experiment
1583    checkpoint53e_pre
1584    
1585    checkpoint53d_post
1586    o faulks upgraded: re-generate output.txt that have changed:
1587       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1588    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1589    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1590    o added Sadourny discretization of Coriolis
1591      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1592      - re-enabled use of omega3 (useAbsVorticity)
1593    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1594      vector-invariant equations
1595      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1596    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1597      hopefully without new bugs
1598      - still to do: biharmonic friction for non-hydrostatic w
1599    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1600    o regenerated output for global_ocean_ebm (using -ieee)
1601    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1602      of mom_common/
1603      - simple re-arrangement of instructions within computing loop
1604    checkpoint53d_pre
1605    
1606    checkpoint53c_post
1607    o new version of coupler for AIM+thSIce and Ocean models
1608     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1609     - land: change Evaporation of snow
1610     - aim with thSIce: fix bug in snow-precip.
1611    o changes to calc_gw.F
1612     - bug fix for w^2 term near the bottom boundary
1613     - (hopefully) improve the lateral slip boundary condtions for use with
1614        partial/looped cells
1615      - because the bug fix changes two verification experiments anyway (exp5
1616        and plume on slope), change the lateral boundary condition from half slip
1617        to the value of no_slip_sides
1618    o ebm package wasnt quite up to the parallel task. Fixed that.
1619    o Adjoint of EBM package + verification
1620      * TLM OK
1621      * ADM not sufficient accuracy yet (needs further testing)
1622    
1623    checkpoint53b_post
1624    o Commiting new energy balance model to repository
1625      * package is pkg/ebm
1626      * verif. is verification/global_ocean_ebm
1627      * references are in ebm_driver.F
1628    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1629    C        Global thermohaline circulation. Part I:
1630    C        Sensitivity to atmospheric moisture transport.
1631    C        J. Climate 12(1), 71-82
1632    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1633    C        Global thermohaline circulation. Part II:
1634    C        Sensitivity with interactive transport.
1635    C        J. Climate 12(1), 83-91
1636    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1637    C        Destabilization of the thermohaline circulation
1638    C        by atmospheric eddy transports.
1639    C        J. Climate 7(12), 1870-1882
1640    o Will need long integration testing.
1641    checkpoint53b_pre
1642    
1643    o created pkg/mom_common in preparation for variable viscosity code
1644    o renamed and split ini_mnc_io
1645    o pkg/land: only liquid water can diffuse or run-off
1646    o AIM using land: soil wetness availability account for snow
1647    o added printMapIncludesZeros to EEPARMS namelist
1648    
1649    checkpoint53a_post
1650    o restore TAMC compatiility for exf_constants.h
1651      (no usage of _d in .h)
1652    o Additional storing in KPP in an attempt to fix
1653      TAMC problem with adjoint of KPP code.
1654      (no success...)
1655      Identical code works fine with TAF.
1656    o Fixed verification/natl_box_adjoint experiments.
1657      Initial conditions for Experiments 4 and 5 are now
1658      set to "SEAICE_initialHEFF=0", which is more reasonable,
1659      and hence gives results closer to that of Experiment 2.
1660      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1661    
1662    checkpoint53
1663    o stable checkpoint with up to date adjoint
1664      TLM tests only run for 1st grdchk at the moment. Its unclear if
1665      this is a code problem or a problem with resetting code for g_
1666      variables that is being autogenerated wrong.
1667      Otherwise:
1668       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1669       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1670         are both still in chaos following their security messes.
1671    
1672    checkpoint52n_post
1673    o various build (mostly genmake2) changes including:
1674      - ability to build/run more easily within Cygwin and MacOS X
1675      - more complicated Makefiles with a stronger dependence on Gnu Make
1676    o pkg/seaice modifications
1677      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1678        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1679        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1680      - changed proxy for geostrophic velocity and updated
1681        verification/lab_sea/results/* accordingly
1682      - removed ADI dynamic solver from pkg/seaice
1683      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1684        they caused a segmentation fault under certain circumstances
1685      - removed unused field WATR
1686    o bug fix in exf-package:
1687      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1688         now reflect that.
1689    o small fixes in the cal-package:
1690      - set reference date to first of January for the 'model'-calendar
1691      - failing of cal_CheckDate in cal_FullDate now actually results in a
1692        warning
1693    o small modifications in exf-package to increase flexibility:
1694      - change climtempfreeze from a constant to a runtime parameter that
1695        is specified in data.exf_clim (default = -1.9)
1696      - introduce runtime parameter windstressmax (default = 2.0) that is
1697        specified in data.exf
1698    o fix in pkg/thsice:
1699      - update Evap (Tsf changes) to be consistent with Latent heat flux
1700      - maintain snow precipitation unchanged (even if Tsf >=0).
1701     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1702    
1703    checkpoint52m_post
1704    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1705      this does not change any of the results, because myIter=0 in swfrac always
1706      lead to jwtype=2 (the default anyway), but the call makes little sense
1707      as a default
1708    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1709    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1710      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1711    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1712    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1713    o extending useSingleCpuIO option to work with new exch2 I/O format
1714      - old-style, missing-tile I/O is still accessible by defining CPP
1715        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1716    o monitor package can write to NetCDF files and/or STDOUT
1717    o fix re-definition bug in MNC_GRID_INIT_ALL()
1718    o doc/api_reference added
1719      - a framework for building an API Reference Manual using all
1720        the "protex" comments embedded in the code
1721      - see pkg/generic_advdiff, pkg/mnc for examples
1722    o MNC:
1723      - make myThid the last argument for all subroutines
1724      - new default for the grid files: NO halos
1725      - add useMNC and other run-time flags
1726      - separate per-file-group handling of the unlimited dimension
1727      - early initialization of MNC w/ flags read at the eeboot stage
1728        and lookup tables set in initialize_fixed
1729      - write all MNC output to a freshly-created directory
1730    o thermodynamics sea-ice (thsice) is now tested with testreport.
1731    o test exp. advect_cs: use the standard cs32 grid ; update output.
1732    o Added functionality to grdchk:
1733      pick global i,j,k position (or nearest wet) where to perform check.
1734    
1735    checkpoint52l_post
1736    o new land formulation:
1737      a) use ground enthalpy as prognostic variable to ensure exact
1738         energy conservation.
1739      b) account for water temperature and for latent heat of freezing
1740         in all processes (rain, run-off, ground storage)
1741      c) compute surface and ground temperature implicitly.
1742    o aim_v23 modification for new land model:
1743      a) Treat separately land / ocean / sea-ice surface fluxes
1744         to allow implicit computation of land & sea-ice surface temp.
1745      b) add snow precipitation.
1746    checkpoint52l_pre
1747    
1748    o fix problem (when 1 tile is empty) in min/max monitor.
1749    o fix bug in timeAve (u,vZetatave in common block)
1750    o no restoring terms under ice for pkg/seaice
1751    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1752    o bug fix for pkg/seaice pickups
1753    o change MNC call locations and add coordinate attributes
1754    o mask vorticity at the corner ; affects global_ocean.cs output
1755    o fix ini_curvilinear_grid ; test CS experiments with mpi
1756    o aim.5l_cs: modify sea-ice fraction input file ; update output
1757    o exf: Adding simple range check routine for exf fields after read
1758    
1759    checkpoint52k_post
1760    o removed top-level directory "diags"
1761      - we migrated these functions to pkg/timeave a long time ago
1762    o fixed bug introduced in pkg/monitor
1763    o accuracy ctrlprec = 32 insuffient for gradient checks using
1764      averaged fields (I/O via cost_averages)
1765      -> use ctrl.h in active_file*.F to control I/O precision.
1766    o paramter list of CALL ADTHE_MAIN_LOOP
1767    o added initial do_the_model_io to ecco
1768    o set all ...Freq to zero after cost_final
1769      taveFreq, dumpFreq, pChkptFreq
1770    o MAIN and ECCO differentiability restored
1771    
1772    checkpoint52j_post
1773    o fix nchklev in tamc.h for global_ocean...
1774    o Bringing flow and store directives up-to-date
1775    o Really weird thing!
1776      call do_the_model_io from the_main_loop with parameters
1777      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1778      TAF places a faulty re-call of initialise_varia
1779      after cost_final call which should not be there!
1780    checkpoint52j_pre
1781    
1782    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1783      error messages
1784    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1785    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1786      debug output
1787    o modfied mdsio_writefield.F to handle non-global files under exch2
1788    o update AIM Cubed-Sphere exp (aim.5l_cs):
1789      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1790    o update AIM Equatorial Channel exp:
1791      use standard aim_v23 pkg and change the SST fields to be more realistic.
1792    o globalFile now works with exch2
1793    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1794      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1795    o limit timeave output for hi-res integrations
1796    
1797    checkpoint52i_post
1798    o removed CPP_EEOPTIONS.h from verification/*/code
1799    o updated the tiling for global_ocean_pressure
1800    checkpoint52i_pre
1801    
1802    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1803      the old pkg/aim).
1804    
1805    checkpoint52h_pre
1806    o shortened offending lines in exch2_send_rx?.template
1807    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1808    o genmake2: add build & execute test for NetCDF code
1809    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1810      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1811    o added useSingleCPUIO flag to monitor.F and mon_out.F
1812    o added temporary hack for sea-ice dynamics on the cube:
1813      metric terms are ignored and it is assumed that
1814      there is no sea-ice on cube faces 1, 2, 4, and 5.
1815    
1816    checkpoint52f_post
1817    o added exch2 cube routines to pkg/exch2
1818    o modified hs94.cs-32x32x5 to use it
1819    o added new grid files to hs94.cs-32x32x5
1820    checkpoint52f_pre
1821    
1822    checkpoint52e_post
1823    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1824      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1825    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1826      to work with implicit vertical advection and AB ;
1827    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1828    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1829     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1830    checkpoint52e_pre
1831    
1832    o fix bug in impldiff when Nr=1 or Nr=2.
1833    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1834    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1835    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1836      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1837    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1838    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1839    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1840    
1841    checkpoint52d_post
1842    o re-tiled many expts to allow comparison in multi-processor mode
1843      - updated output accordingly
1844      - changed hs94.128x64x5 to use intial T from file rather than use the
1845        random number generator
1846    o add infrastructure in model routines for fizhi and gridalt packages
1847    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1848    o changes to permit hi-res, cubed-sphere, configuration
1849      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1850      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1851      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1852        of surface winds for the cube
1853      (A verification experiment, based on global_ocean.cs32x15, but with
1854       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1855       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1856       complete with example surface forcing files and matlab scripts to look
1857       at the output and compare it with that of global_ocean.cs32x15.)
1858    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1859       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1860       to conform to the common rule.
1861    o check-in the first version of the coupler + interfaces for multi-components
1862       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1863       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1864       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1865       - ocean and atmos. share the same horizontal grid (no interpolation).
1866       - exchanges between component and coupler is done in forward_step
1867    o new verification experiment, cpl_aim+ocn:
1868       coupled ocean - AIM atmosphere on cs32 grid.
1869    
1870    checkpoint52d_pre
1871    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1872    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1873    
1874    checkpoint52c_post
1875    o Fixing OPTIONS files for use of exf:
1876      - ALLOW_ECCO not needed
1877      - ECCO_CPPOPTIONS.h should not be included from
1878        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1879        as has been the case in the past
1880      - All cal/exf related options are currently set in
1881        single header file. Should remain so until we
1882        agree on a consistent new policy.
1883    o Removed all CPP options for cal package.
1884      cal has no more CPP options.
1885    o modified STOREs in GAD_ADVECTION
1886    o corrected key comp. for passkey
1887    
1888    checkpoint52b_post
1889    o new version: "thsice" of thermodynamic sea-ice pkg:
1890     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1891     - modify fluxes but do not change theta directly;
1892     - light cleaning of bulk_force pkg (still needed with thsice).
1893     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1894       + output_thsice.txt to test thsice & bulk_force pkgs.
1895    o put back grid & coriolis monitor output.
1896    checkpoint52b_pre
1897    
1898    o call "do_the_model_io" at the beginning (=> dump initial state)
1899    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1900    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1901      (need info on NUMBER_OF_PTRACERS)
1902    o missing PTRACERS headers in some routines
1903    o default tamc.h in pkg/autodiff supposed to crash
1904      to ensure proper customization
1905    
1906    checkpoint52a_post
1907    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1908      - moved surfaceTendencyTice from pkg/seaice to main code
1909      - subroutine FREEZE_SURFACE now limits only surface temperature
1910        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1911        => new output.txt for global_ocean.cs32x15 & global_with_exf
1912      - keep the old version of FREEZE for backward compatibility;
1913        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1914      - corresponding modifs for TAF directives
1915    o added surface flux output variables to TIMEAVE_STATVARS
1916    o time-averaged output for pkg/ptracers
1917    o fix problem with ECCO-related divided adjoint
1918      snapshot file was missing some ad-variables,
1919      but no warning issued by TAF
1920    
1921    checkpoint52a_pre
1922    o some bug fixes for #undef REAL4_IS_SLOW
1923    
1924    checkpoint52 = ecco_c52_e35
1925    o after testing adjoints of checkpoint51u_post
1926    
1927    checkpoint51u_post
1928    o this is the post-merge tag of the ecco-branch
1929      (needs another clean checkout and re-testing)
1930    o various natl_box_adjoint configs and results
1931      but no input fields
1932    o obcs adjoint not yet merged!
1933    o adding ECCO global 1x1 and 2x2 degree configs
1934    o updated/extended some store directives for seaice
1935    o pkg/ecco now containes ecco-specific part of cost function
1936    o top level routines the_main_loop, forward_step
1937      supersede those in model/src/
1938      previous input data.cost now in data.ecco
1939      (new namelist ecco_cost_nml)
1940    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1941    
1942    checkpoint51t_post
1943    o this is the pre-merge tag of the ecco-branch
1944    
1945    checkpoint51s_post
1946    o cleanup: removed various obsolete #define-s
1947    o pkg/grdchk
1948      - renamed 'ph-grd 3' to 'grad-res'
1949      - merged from ecco-branch
1950        (remaining bug fixes for obcs gradient checks)
1951      - additional high-precision output for testreport
1952        (grep for 'precision_grdchk_result')
1953    
1954    checkpoint51r_post
1955    o cleaned up or removed CPP_OPTIONS.h files
1956    o updated results for some of the tests to reflect the new
1957      optfiles (-ieee: -O0 instead of -O3)
1958    
1959    checkpoint51q_post
1960    o cd_code:
1961      - moved cd_scheme.F -> cd_code_scheme.F
1962      - separate read_checkpoint from cd_code_ini_vars.F
1963      - separated cd_code part from write_checkpoint
1964      - updated AD_SOURCE, generated .flow
1965      - added CD_CODE_VARS.h to the_main_loop
1966      - Moving cd_code specific store dir.s to pkg/cd_code
1967    o ctrl package totally restructured
1968      - pack/unpack now optional and decoupled from
1969        xx_/adxx_ I/O
1970      - ctrl_pack/unpack cleaned
1971        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1972      - confined inclusion of AD_CONFIG.h to where necessary.
1973    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1974    
1975    checkpoint51p_post
1976    o create initial cd_code package
1977      - WARNING: the initialization of fields within packages
1978        is broken because INI_FIELDS (where READ_CHECKPOINT is
1979        called) is called *before* PACKAGES_INIT_VARIABLES.
1980        This seems to be backwards since
1981        1) its important to initially zero the entire field including
1982           the "halo" region
1983        2) zeroing needs to be done *before* reading pickup info
1984           and the pickup call might or might not happen in any
1985           particular run
1986      - this needs an overhaul for R2
1987    o cleanup verification/*/code/GMREDI_OPTIONS.h
1988    o cleanup testreport
1989    
1990    checkpoint51o_post
1991    o bringing AD-related verif's up to date with genmake2
1992      - carbon/
1993      - global_ocean.90x40x15/
1994      - hs.94.1x64x5/
1995      - (front_relax/ )
1996    o (more) consistent directory structure for AD-related verif.'s
1997    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1998    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1999    o bug fix in find_alpha.F for MDJWF:
2000      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2001        change rho -> rho-rhoConst
2002      - replace call find_rho to find_rhonum
2003    o initialisation of rFlx extended to full array (required by TAF)
2004      and shifted to thermodynamics
2005    o removed PTRACERS.h in ptracers routine
2006    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2007    o Correcting initialisations for fVerU, fVerV.
2008    o helping TAF to recognize dependency on kUp for
2009      fVerU, fVerV
2010    o Replacing delZ by delR in pkg/ctrl/
2011    checkpoint51o_pre
2012    
2013    o undid all of cp51 pending some cleanups and discussion
2014    o added the [#include "AD_CONFIG.h"] statement to all files that need
2015       it for adjoint/tl #defines
2016     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2017     o removed tools/genmake since it no longer works
2018    
2019    checkpoint51n_post
2020    o modifications to make FREEZE flux visible to pkg/kpp
2021      - moved surfaceTendencyTice from pkg/seaice to main code
2022      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2023      - subroutine FREEZE now limits only surface temperature
2024        (this means new output.txt for global_ocean.90x40x15,
2025         global_ocean.cs32x15, and global_with_exf)
2026    o added surface flux output variables to TIMEAVE_STATVARS
2027    
2028    checkpoint51n_pre
2029    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2030    o added [#include "AD_CONFIG.h"] to all files that use the following
2031      defines:
2032      - ALLOW_ADJOINT_RUN
2033      - ALLOW_TANGENTLINEAR_RUN
2034      - ALLOW_ECCO_OPTIMIZATION
2035    
2036    checkpoint51m_post
2037    o incorporating changes to get TAMC/TAF working in genmake2
2038      - added new TAMC/TAF targets to the Makefile
2039      - various cleanups related to package handling
2040      - these changes should have no impact on the forward model
2041    
2042    checkpoint51l_post
2043    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2044     - faster algorithm for cal_addtime.F
2045     - higher precision arithmetic, where needed
2046     - pkg/exf *startdate variables changed from calendar date to
2047       model integration time
2048    
2049    checkpoint51l_pre
2050    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2051    o enable to apply restoring on S & T only in a latitude band.
2052    o update output (external_forcing_surf modif. change truncation errors)
2053       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2054    
2055    checkpoint51k_post
2056    o change default to: useNHMTerms=.FALSE.
2057     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2058       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2059     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2060        exp1, ideal_2D_oce
2061     - change data file of oceanic exp (leave the results unchanged for now)
2062       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2063    o set gravitySign automatically according to the vertical coordinate used
2064      (and change sign: back to "logical" value: +1 when R increases downward)
2065    o added an include barrier to the default CPP_OPTIONS.h and
2066      removed the #include "PACKAGES_CONFIG.h" from it
2067    o fix a bug in mom_fluxform (from chk51j_post)
2068    
2069    checkpoint51j_post
2070    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2071    o adjusted some flow directives (dynamics, thermodynamics)
2072    o added cubed-sphere case to test cost function
2073    o heckpoint_lev?_directives.h now include
2074      pkg-specific directives, whenever those are enabled.
2075    o Moving pkg-specific flow directives to corresponding pkg
2076      Moving pkg-specific differentiation list to corresponding pkg
2077      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2078      ---> conventions are
2079           - pkg_ad.flow
2080           - pkg_ad_diff.list
2081           - pkg_ad_check_lev?_dir.h
2082    
2083    checkpoint51i_post
2084    o merge of the branch-genmake2
2085      - knowingly breaks the older genmake
2086      - automatic generation of all ALLOW_${PKG_NAME} defines
2087      - new testreport supersedes older testscript
2088    o large number of package inclusion and header cleanups
2089    checkpoint51i_pre
2090    
2091    o new output for adjoin of global ocean vector invariant
2092    o fix for checkpoint of thermodynamic seaice and bulk_force
2093    o Steph gchem various cleanups
2094    
2095    checkpoint 51h_pre
2096    o fixed some single quotes
2097    o modify gchem pkg to be more versatile
2098    o modifications to clean up dic pkg
2099    o add pkg/cfc
2100    
2101    checkpoint51g_post
2102    o provide links for ARPACK and ADM*TLM
2103    o start removing verification/vero/
2104    o update AD-related stuff
2105      (in particular some IF-statements in model/src/ routines)
2106    o adding to verification/global_ocean.90x40x15/ adjoint of
2107      vector invariant setup
2108    
2109    checkpoint51f_post
2110    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2111    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2112      of tracer Green's fucntions for ocean inversion project.
2113    
2114    checkpoint51f_pre
2115    o Added on-the-fly spatial interpolation capability
2116        "USE_EXF_INTERPOLATION" to pkg/exf.
2117      - This is a temporary Cartesian-grid hack until
2118        the super-duper ESMF coupler becomes available.
2119      - See verification/global_with_exf/README for usage example.
2120      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2121        flags and modified pkg/seaice accordingly.
2122    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2123        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2124        non-local transport term.
2125    
2126    checkpoint51e_post
2127    o pkg/mom_vecinv:
2128      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2129      - add time-ave diagnostic of vorticity advection.
2130    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2131    o atmospheric geopotential: - include water vapor effect;
2132                                - use p^kappa in p* scaling.
2133    o land pkg: read initial state from files.
2134    o AIM : add stratospheric drag in the upper level
2135    
2136    checkpoint51d_post
2137    o change function ILNBLNK (=> last non-blank char.) to return zero
2138      (instead of the string length) when the string. char is empty
2139    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2140    o modif's to restore TAMC compatibility
2141      - avoid "_d" constructs in PARAMETER declarations
2142      - avoid interrupting lines by comment lines
2143    o Use cluster local disks for purely local I/O
2144      vs. globally visible disks needed for ctrl stuff
2145      (merged from ecco-branch)
2146      - new active_file_loc... and mdsio_..._loc routines
2147      - affected packages: autodiff, ctrl, grdchk, mdsio
2148    
2149    checkpoint51c_post
2150    o introducing integer flag debugLevel
2151      - debLevZero: suppress all output
2152      - debLevA: standard
2153      - debLevB: equivalent to current debugMode=.TRUE.
2154    o introducing pathname variable mdsioLocalDir for mdsio
2155      that can be specified at runtime
2156      (relevant for cluster I/O to local disk)
2157    `
2158    >>>checkpoint51b_post
2159    adjoint of ptracers
2160    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2161    o extended state in checkpoint_lev?, etc.
2162    o alternative ctrl/cost with tr1 or ptracer
2163    o new comlev1_bibj_ptracers
2164    o new ptracers.flow
2165    o made ptracers_forcing same as external_forcing_s
2166    o added verification for adjoint with ptracers
2167      - adm. grdchk fail so far
2168      - tlm. grdchk OK
2169      - checked tapelev/comlev recomputations: OK
2170    <<<checkpoint51b_pre
2171    
2172    checkpoint51a_post
2173    o added code for biogeochemistry package
2174      - new pkgs: dic, gchem
2175      - new subroutine in ptracers
2176    o modify code for biogeo packages
2177      - in model/src and pkg/ptracers
2178    
2179    checkpoint51
2180    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2181      - autodiff, ctrl, exf, grdchk, seaice
2182      kept separate packages
2183      - cost, ecco, obcs
2184    o updating verification/internal_wave, verification/lab_sea
2185      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2186    
2187    checkpoint50i_post
2188    o Preparing next differentiable checkpoint and sync
2189      of MAIN vs. ecco-branch
2190      - 1st step: this one is differentiable
2191      - 2nd step: next(! not this) checkpoint will have updated packages
2192                  from ecco-branch)
2193    
2194    checkpoint50h_post
2195    o new package "land": provide surface BC for AIM.
2196    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2197    o AIM: use true log-P extrapolation for near surface temp (= as in
2198        F.Molteni paper) ; update aim.5l_cs output.
2199    o New variable in PARM03 for more flexible pickups
2200    o somewhat cleaned package initialisation sequence for
2201      ctrl/ cost/ ecco/ in packages_... routines
2202    
2203    checkpoint50g_post
2204    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2205      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2206      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2207        made the default because of faster convergence than ADI
2208    
2209    checkpoint50f_post
2210    o exf totally restructured
2211      - replaced all exf_set_ routines by one generic exf_set_gen.F
2212        and made sure it's still differentiable
2213      - split exf_getffields.F into new exf_bulkformulae.F
2214      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2215      - updated adjoint/makefile and relevant verif. accordingly
2216    
2217    checkpoint50f_pre
2218     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2219          + change Evap over land. (update aim.5l_cs output)
2220     o added missing .cvsignores and made uniform across expts
2221     o changed configuration of tidal_basin_2d expt
2222     o added pkg/debug functions for tracing code in fatal crashes
2223     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2224     o new fn in pkg/monitor to stop model if solution grows too big
2225     o removed lots of single quotes from comments
2226    
2227    checkpoint50e_post
2228    o make KPP work with PTRACERS
2229     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2230       nearly a copy of kpp_transport_s
2231     - there is no analogue to SurfaceTendencyS, so I have to use
2232       gPtr(of the surface layer) instead
2233    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2234    checkpoint50e_pre
2235    
2236    checkpoint50d_post
2237    o change kpp output from multiple-record state files to single-record state
2238      files analogous to write_state.F
2239    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2240      analogous to the cg2d-related output.
2241    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2242      so that writing to internal file fn (with length 512) fails.
2243    checkpoint50d_pre
2244    
2245    checkpoint50c_post
2246    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2247    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2248    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2249    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2250    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2251    
2252    checkpoint50c_pre
2253    Merging from release1_p13:
2254    o bug fix for pkg/seaice dynamic solver
2255    o Added SEAICE_initialHEFF to pkg/seaice
2256    
2257    checkpoint50b_post
2258    o store u*,v* in gU,V instead of in guNm1,gvNm1
2259    o in order to put the momForcing out of the Adams-Bashforth:
2260      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2261      to timestep.F
2262    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2263    o re-generate output for highly sensitive test-exp:
2264       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2265    
2266    checkpoint50b_pre
2267    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2268    o corrected CPP option mismatch in exf_Bulk... functions for case
2269      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2270    
2271    checkpoint50a_post
2272    o Bug fix for merging between c50 and KPP.
2273      ikey was passed from thermodynamics to kpp_calc via
2274      common block rather than being recomputed in kpp_calc,
2275      in contradiction with new key itdkey.
2276      New key ikppkey created, and tamc.h headers updated.
2277    
2278    checkpoint50
2279    - 2nd step of merge with ecco-branch:
2280      merge changes in ecco-branch back into main trunk
2281    - bug fix in find_alpha
2282    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2283    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2284    - merged some sliced AD support routines
2285    
2286    checkpoint49
2287    merged from ecco-branch:
2288    o exf:
2289      - Enable initialisation of forcing fields to constant
2290        (runtime) values.
2291      - in exf_getffields.F
2292        Reduce i-/j-loop to interior domain, discarding overlaps.
2293        That also fixes wrong TAF-key computations for key_1, key_2
2294        with bulf formulae.
2295      - exf_init.F modify #ifdef for exf_init_evap
2296      - exf_getffieldrec.F, ctrl_getrec.F
2297        The following INT-usages are not safe:
2298          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2299          fldcount = int(fldsecs/fldperiod) + 1
2300        and were modified.
2301    o autodiff: checkpoint_lev...
2302      - updated storing for bulk formulae (some arrays were missing)
2303      - added state for seaice package
2304      - synchronized with main branch
2305    o DIVA:
2306      Modif.s in
2307      - the_main_loop.F
2308      - the_model_main.F
2309      and added cost_final_restore.F cost_final_store.F
2310      o With these changes, it is possible to fully separate
2311        the first forward run to compute the cost function (mdthe_main_loop)
2312        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2313        into separate model executions.
2314        This enables better tuning of DIVA to given queue sizes.
2315      o Loss of cost function value in consecutive DIVA runs is
2316        fixed by storing to 'costfinal' file.
2317      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2318        beginning/end of adjoint integration is accounted for.
2319      The current changes apply to TAF-1.4.26.
2320      TAF has one remaining bug, requiring one manual change
2321      (see MITgcm manual).
2322    o cal: synchronized between MAIN and ecco-branch
2323    
2324    checkpoint48i_post
2325    o Changes to restore differentiability of code w.r.t. previous tag
2326      (mostly adding new routines to make list and replacing
2327      pressure by totPhiHyd).
2328    o Updated and merged grdchk package
2329      - has both ADM and TLM checks
2330      - works for single- and multi-proc.
2331      - output cleaned
2332      - worked successfully for parallel DIVA
2333    o genmake:
2334      - Adding -platform=SP4
2335      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2336    o Modif. for DIVA:
2337      ctrl_unpack should not be called in intermediate DIVA interval.
2338      (similar thing would apply for active files such as
2339      tbar, sbar, psbar, which should not be reinitialised;
2340      only relevant for ecco-branch)
2341    
2342    checkpoint48h_post
2343    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2344    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2345    o Added SEAICE_initialHEFF to pkg/seaice
2346    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2347    
2348    checkpoint48g_post
2349    --- EOS:
2350    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2351      store total Potential in totPhyHyd for diagnostics & EOS.
2352    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2353    --- Pressure/geopotential gradient:
2354    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2355    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2356      ( changes results of global_ocean_pressure )
2357    o NLFS + z-coord.: add eta*Rho' contribution.
2358    o accurate phiHyd when using interface-W at the middle between 2 centers
2359     ( changes results of ideal_2D_oce )
2360    o includes r* 2nd term in potential gradient.
2361    
2362    checkpoint48f_post
2363    Merging from release1_p12:
2364    o Modifications for using pkg/exf with pkg/seaice
2365      - improved description of the various forcing configurations
2366      - added basic radiation bulk formulae to pkg/exf
2367      - units/sign fix for evap computation in exf_getffields.F
2368      - updated verification/global_with_exf/results/output.txt
2369    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2370      (SBO) core products, including oceanic mass, center-of-mass,
2371      angular, and bottom pressure (see pkg/sbo/README.sbo).
2372    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2373      to avoid negative values in shallow regions.
2374      - updated verification/natl_box/results/output.txt
2375      - updated verification/lab_sea/results/output.txt
2376    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2377    o Added useSingleCpuIO option (see PARAMS.h).
2378    o Updated useSingleCpuIO option in mdsio_writefield.F to
2379      work with multi-field files, e.g., for single-file pickup.
2380    o pkg/seaice:
2381      - bug fix in growth.F: QNET for no shortwave case
2382      - added HeffFile for specifying initial sea-ice thickness
2383      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2384    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2385      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2386    o pkg/seaice:
2387      - adjoint-friendly modifications
2388      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2389    
2390    checkpoint48e_post
2391    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2392    o dynamics: change definition of computational domain & adapt mom_fluxform
2393      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2394    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2395        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2396        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2397        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2398        inverted_barometer solid-body.cs-32x32x1
2399      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2400    
2401    checkpoint48d_post
2402    o in preparation for r*:
2403     a) use pre-computed gradient of hydrostatic potential:
2404        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2405     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2406        => affects results of glob_oce_pressure (different truncation error)  
2407      update output.txt of ideal_2D_oce & global_ocean_pressure
2408    
2409    checkpoint48d_pre
2410    o in preparation for r*:
2411      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2412      pass the 2 comp. of the grad. as arguments to momentum S/R.
2413      but for the moment, only used if it does not change the results.
2414    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2415    
2416    checkpoint48c_post
2417    Modifications in treatment of initial flux forcing controls
2418    to avoid extra storing of flux fields.
2419    
2420    checkpoint48c_pre
2421    o Added tidal_basin_2d experiment (currently 1D!)
2422    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2423    
2424    checkpoint48b_post
2425    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2426     (modification to pressure gradient not yet implemented)
2427    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2428      (for U & V) that are used for vertical advection of momentum.
2429    
2430    checkpoint48a_post
2431    o In preparation for r*, use temp. array to compute vertical transport
2432       in flux-form momentum pkg. => change results of few test-exp.
2433      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2434                        lab_sea, natl_box & plume_on_slope
2435    
2436    checkpoint48
2437    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2438    
2439    checkpoint47j_post
2440    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2441    o moved adexch from forward_step to addummy_in_stepping
2442    o added exch in ctrl_map_...
2443    o aveFreq.=0. at end of cost_final to avoid overwrite in
2444      reverse checkpointing loop
2445    o Yet more changes in gmredi:
2446      * adgmredi_calc_tensor
2447        avoiding all recomputation of gmredi_slope_limit
2448      * adgmredi_x/y/rtransport
2449        added flag for excessive storing to avoid recomp. of
2450        u/v/rtans, dTdx/y/z
2451        -> this is not really necessary and very memory-consuming
2452      * adgmredi_slope_psi:
2453        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2454      * gmredi_slope_limit
2455        re-activated full calculation of taperfct for case 'ac02'
2456    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2457    
2458    checkpoint47i_post
2459    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2460    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2461      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2462    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2463    o gmredi: fix few bugs.
2464    
2465    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2466    This will be a good checkpoint to plug into the ecco-branch.
2467    o few modif.'s to get latest version adjointed
2468      (mainly kick out code in ini_linear_phisurf)
2469    o modif's to run adjoint with exactConserv
2470    o case GM_BOLUS_ADVEC should be cleaned
2471      S/R gmredi_slope_psi should be cleaned
2472    o verification/carbon now has exactConserv=.TRUE.
2473    
2474    checkpoint47g_post
2475    o time-average AIM output: becomes independent from statvars time-average
2476      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2477    o After TAF bug fix:
2478      Tested adjoint of gmredi package.
2479      Tests were done with checkpoint47 rather than with latest
2480      checkpoint47f_post since the latter is broken for the adjoint
2481      verification/carbon/ contains both ADM and TLM gradient checks.
2482    Here they are, before they get changed/lost/stolen.
2483    Mostly modif.'s to fix numerical sensitivities.
2484    Gradient checks OK for
2485    - GM_taper_scheme:
2486      * clipping
2487      * ac02
2488      * linear
2489      * glw91
2490      * dm95
2491      * ldd97
2492    - GMREDI_OPTIONS:
2493      * GM_VISBECK_VARIABLE_K
2494      * GM_NON_UNITY_DIAGONAL
2495      * GM_EXTRA_DIAGONAL
2496      * GM_BOLUS_ADVEC
2497    in conjunction with data.gmredi parameters to be checked in
2498    in a few minutes under verification/carbon/code/
2499    
2500    checkpoint47f_post
2501    Merging from release1_p10:
2502    o modifications for using pkg/exf with pkg/seaice
2503      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2504        and SEAICE_EXTERNAL_FLUXES
2505      - pkg/exf CPP options EXF_READ_EVAP and
2506        EXF_NO_BULK_COMPUTATIONS
2507      - usage examples are Experiments 8 and 9 in
2508        verification/lab_sea/README
2509      - verification/lab_sea default experiment now uses
2510        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2511    
2512    checkpoint47e_post
2513    o created a tag prior to creating a branch
2514    
2515    checkpoint47d_post
2516    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2517      at the bottom boundary had an erroneous half slip boundary condition
2518    o added bottom drag and no slip boundary condition capabilities to
2519      oceanic pressure coordinates code
2520    o added new verification experiment global_ocean_pressure, this experiment is
2521      also described in the tutorial section of the manual
2522    checkpoint47d_pre
2523    
2524    checkpoint47c_post
2525    o Added a verification experiment for a global cubed-sphere ocean run
2526      -  verification/global_ocean.cubed32x32x30
2527      -  uses pkg/therm_seaice and pkg/bulk_forcing
2528    
2529    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2530    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2531      when using P-coordinate; only implemented for atmospheric config.
2532    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2533      NOTES: requires option NONLIN_FRSURF to be "#define".
2534    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2535    
2536    checkpoint47b_post
2537    Merging from release1_p9:
2538    o pkg/seaice
2539      - removed GOTO's and added taf directives
2540      - double precision constants to reduce the g77 (Linux)
2541        to F77 (SGI) differences reported in release1_p8
2542    o tools/genmake
2543      - added SGI options
2544    o verification/testscript
2545      - updated to that of checkpoint47a_post
2546    o verification/global_ocean.90x40x15/input/eedata
2547      - modified for SGI f77 compatibility
2548    o verification/lab_sea
2549      - added description of sea-ice model
2550      - added missing matlab routines
2551      - added test of thermodynamics parallelization
2552    
2553    checkpoint47a_post
2554    o new pkg: aim_v23
2555     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2556       for now, keep the same surface forcing as before.
2557     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2558     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2559     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2560    o add diagnostic of surface correction term in monitor output
2561    
2562    o bulk_force and therm_seaice
2563    - Two packages:  bulk_force (Bulk forcing)
2564      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2565    - Earlier integration from Stephaine Dutkiewicz
2566      and Patrick Heimbach.
2567    - Two ifdef statements for compile time,
2568       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2569    
2570    checkpoint47
2571    differentiable version of checkpoint46n_post
2572    o bug fix in quasihydrostaticterms
2573    o * "clean" adjoint code (in terms of extensive recomputations)
2574        can now be obtained for all GMREDI options (i.e. for
2575        - GM_VISBECK_VARIABLE_K
2576        - GM_NON_UNITY_DIAGONAL
2577        - GM_EXTRA_DIAGONAL
2578        - GM_BOLUS_ADVEC )
2579      * However, wrong gradient check problem remains unsolved.
2580      * New CPP options have been introduced for different
2581        tapering schemes
2582    o external_fields_load now part of differentiation list
2583    o pressure needs multiple storing;
2584      would be nice to have store_pressure at beginning or
2585      end of forward_step, e.g. by having phiHyd global (5-dim.)
2586      (NB: pressure is needed for certain cases in find_rho,
2587      which is also invoked through convective_adjustment).
2588    o recomputations in find_rho for cases
2589     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2590    o #define ATMOSPHERIC_LOADING should be differentiable
2591    o ini_forcing shifted to begining of initialise_varia
2592    o Incorporating QNVS line search routines into MITgcm
2593      (this is separate code, and therefore not under pkg)
2594      lsopt/, optim/
2595    o Updated verification/carbon/
2596      - #define GM_VISBECK_VARIABLE_K
2597      - GM_taper_scheme    = 'ldd97'    
2598    
2599    checkpoint46n_post
2600    Merging from release1_p8:
2601    o verification/natl_box:
2602      updating new external_fields_load routine
2603    o New package: pkg/seaice
2604      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2605      The sea-ice code is based on Hibler (1979-1980).
2606      Two sea-ice dynamic solvers, ADI and LSR, are included.
2607      In addition to computing prognostic sea-ice variables and diagnosing
2608      the forcing/external data fields that drive the ocean model,
2609      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2610      The implied surface heat flux is then stored in variable
2611      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2612      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2613      non-local transport term.  Because this call precedes model
2614      thermodynamics, temperature under sea-ice may not be "exactly" at
2615      the freezing point by the time theta is dumped or time-averaged.
2616      N.B.: fairly large differences in accuracy occur across
2617            different platforms/compilers; comparison between
2618            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2619            generated output gives:
2620       T           S           U           V
2621      C D M    c        m  s        m  s        m  s        m  s
2622      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2623      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2624      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2625    
2626      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2627    o GAD:
2628      - generated new common blocks to account for call of
2629        same gad routines with differing traceridentities
2630        (needed to modify tracerIdentity indices in GAD.h)
2631      - generated separate common blocks for case useCubedSphereExchange
2632        (Department of Futurology)
2633      - parameter lists to gmredi_?transport: added tracerIdentity
2634      - added new key indices to tamc.h
2635    o external_fields_load:
2636      - added this routine to TAF list
2637      - needed to make some common blocks global and additional storing
2638        along the same lines as exf package (checkpoint_lev?_directives.h)
2639    o exf:
2640      updated external forcing package
2641      - bug fixes carried over from ecco-branch
2642        (missing OBCS_OPTIONS.h in two routines)
2643      - enable easy to use "no forcing".
2644      - added exf I/O for atmospheric loading
2645      - added exf I/O for runoff data
2646      - transfered scaling between exf <-> MITgcm to exf namelist
2647    o Adding new verification experiment global_with_exf.
2648      This verification experiment is almost identical to the
2649      global_ocean.90x40x15 experiment, except that it uses
2650      the exf (and cal) package instead of the
2651      external_fields_load routine (cf README file).
2652    
2653    checkpoint46m_post
2654    o modified testscript to return -- when there are no lines of "%MON" output
2655    o added new flag "quasiHydrostatic" for QH mode
2656      and new routine quasihydrostaticterms()
2657    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2658      New routine: mom_u_coriolis_nh()
2659    o fixed sign of non-hydrostatic metric terms in u and v equations.
2660      Depend on correct sign of gravitySign.
2661    o added work.pc* to .cvsignore in aim directories using ifc
2662    o introduced flag for controllin non-hydrostatic metric terms
2663    o removed gravitySign from PARM04
2664    o switched to g77/ifc from pgf77 in aim experiments
2665    
2666    checkpoint46l_post
2667    o made convective adjustment work with pressure coordinates:
2668     - changed the direction of k-loop in convective_adjustment.F for the
2669       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2670     - adjusted the reference pressure k-index in convective_adjustment.F
2671     - adjusted the convection condition in convect.F (in analogy to
2672       calc_ivdc.F)
2673     - convective_adjustment no longer computes anything on the halos
2674     - removed the warnings about negative salinity from find_rho.F and
2675       find_alpha.F; instead the new routine look_for_neg_salinity, called
2676       at the beginning of find_rho, find_alpha, and find_beta, does a
2677       check of the entire slice, if CPP-option
2678       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2679    checkpoint46l_pre
2680    
2681    checkpoint46k_post
2682    o fixed the verification/global_ocean.90x40x15 experiment:
2683     - new bathymetry (the world according to A., JMC, and M.)
2684     - new initial fields and forcing fields (*.bin files)
2685     - new POLY3.COEFFS (for the next release one should switch to a full
2686       equation of state: JMD95P or MDJWF)
2687     - fixed several errors and redundancies in the data file
2688     - experiment uses looped cells
2689     - added matlab directory with diagnostic scripts for plotting of output
2690    
2691    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2692     - read AIM physics parameters from a file (data.aimphys)
2693     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2694    
2695    checkpoint46j_post
2696    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2697    o move wVel computation at the end of the time step, in S/R integr_continuity
2698    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2699    o update timeave pkg for wVel diagnostic.
2700    checkpoint46j_pre
2701    
2702    checkpoint46i_post
2703    o Clean up AIM package (and keep the results unchanged):
2704      include CPP_OPTION and use IMPLICT NONE in all routines ;
2705      declare all the variables _RL ; use _d 0 for all numerical constants.
2706      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2707    
2708    checkpoint46h_post
2709    o cleaned up the use of rhoNil and rhoConst.
2710      - rhoNil should only appear in the LINEAR equation of state, everywhere
2711        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2712        and the dynamical equations are all divided by rhoConst
2713    o introduced new parameter rhoConstFresh, a reference density of fresh
2714      water, to remove the fresh water flux's dependence on rhoNil. The default
2715      value is 999.8 kg/m^3
2716    o cleanup up external_forcing.F and external_forcing_surf.F
2717      - can now be used by both OCEANIC and OCEANICP
2718    checkpoint46h_pre
2719    
2720     Added code to convert surface volume flux (fresh water) into
2721     a mass flux when using P coordinates in the ocean (OCEANICP).
2722     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2723    
2724    checkpoint46g_post
2725    o Include a new diagnostic variable phiHydLow for the ocean model
2726      - in z-coordinates, it is the bottom pressure anomaly
2727      - in p-coordinates, it is the sea surface elevation
2728      - in both cases, these variable have global drift, reflecting the mass
2729        drift in z-coordinates and the volume drift in p-coordinates
2730      - included time averaging for phiHydLow, be aware of the drift!
2731    o depth-dependent computation of Bo_surf for pressure coordinates
2732      in the ocean (buoyancyRelation='OCEANICP')
2733      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2734        Theta, Salinity, and Pressure in the parameter list. This routine is
2735        presently contained in find_rho.F. This routine does not give the
2736        correct density for 'POLY3', which would be a z-dependent reference
2737        density.
2738    o cleaned up find_rho
2739      - removed obsolete 'eqn' from the parameter list.
2740    o added two new verification experiments: gop and goz
2741      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2742    checkpoint46g_pre
2743    
2744    checkpoint46f_post
2745    o Enable tangent linear (forward mode) gradient checks:
2746      - extended active file handling to g_... files
2747      - added TANGENT_SIMULATION to theSimulationMode
2748      - extended grdchk package accordingly
2749    o added tangent linear setup in verification/carbon/code_ftl
2750    o added adjoint setup in verification/front_relax/code_ad
2751    
2752    checkpoint46e_post
2753    o Added new equation of state -> MDJWF
2754      - EOS of McDougall et al., 2002, JAOT, submitted
2755      - caveat: the equation of state is only valid for a smaller (more
2756        realistic?) range of values than JMD95P/Z and UNESCO
2757      - added masks to the calculation of pressure in store_pressure
2758      - added more check values for density in check_eos (ini_eos.F), some of
2759        the old check values are out of the range of the MDJWF-eos, so don't
2760        expect perfect matches for those
2761    checkpoint46e_pre
2762    
2763    checkpoint46d_post
2764    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2765      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2766      case of pressure coordinates. eosType='JMD95Z' in
2767      combination with buoyancyRelation='OCEANICP' now causes an error.
2768    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2769      in find_alpha/beta.
2770    checkpoint46d_pre
2771    
2772    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2773      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2774    
2775    checkpoint46c_post
2776    o Changes necessary for ocean in p-coordinates
2777     -  Added new buoyancy relation = 'OCEANICP'
2778     -  Added new parameters = gravitySign (this used to be contained inside
2779        the factor dRdZ which I added when we first switched to R coordinates).
2780     X GM/Redi is not compatible (yet)
2781     X bottom drag and no-slip need to be debugged.
2782    checkpoint46c_pre
2783    
2784    checkpoint46b_post
2785    o Added new equation of state -> JMD95Z and JMD95P
2786      - EOS of Jackett and McDougall, 1995, JAOT
2787      - moved all EOS parameters into EOS.h
2788      - new routines ini_eos.F, store_pressure.F
2789    o Added UNESCO EOS, but not recommended because it requires
2790      in-situ temperature (see JMD95)
2791    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2792      unesco.f to be used with POLY3
2793    checkpoint46b_pre
2794    
2795    checkpoint46a_post
2796    o Added (atmospheric) pressure loading
2797      - new field in FFIELDS.h, etc...
2798      - new cpp flag ATMOSPHERIC_LOADING
2799    o Changed hFacC to _hFacC in calc_phi_hyd.F
2800    o Added SHORTWAVE_HEATING to some files for consistency
2801    checkpoint46a_pre
2802    
2803    checkpoint46
2804    further merges from release1_p5
2805    o new ctrl package
2806      - adopted from ECCO environment to enable optimization
2807      - added Eliassen Palm fluxes to controls
2808    o added Eliassen Palm flux controls to gradient check package
2809    o cost package
2810      - Compatible with new ctrl package
2811      - added Eliassen Palm cost hooks
2812      - modif's of existing cost functions
2813    o Adjoint-related bug fixes in kpp:
2814      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2815      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2816    o autodiff package
2817      - flow directives:
2818        + new for S/R do_the_model_io
2819        + enhanced for S/R checkpoint
2820        + new gmredi.flow
2821      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2822        disable adcommon.h/g_common.h by default.
2823      - fixed problem for adjoint of global_max
2824    o modified verification/carbon/
2825    o New setup for adjoint of global_ocean
2826    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2827    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2828    o incorporated hooks for sponge layer code (external_forcing.F)
2829    
2830    checkpoint45d_post
2831    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2832    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2833      (affects plume_on_slope "cg2d" output)
2834    o add new parameter deltaTfreesurf for free-surface time stepping
2835    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2836  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2837  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2838  o add new flags:  o add new flags:

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