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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.815 by jmc, Mon May 14 20:44:45 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf:
8      - implement A-grid / C-grid selection for wind-stress input files.
9      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
10      for now, in exf_bulk_largeyeager04.F only :
11      - change implementation for case where windspeed + 2. components wind-stress
12        are read-in. AND use rhoConstFresh to convert evap.
13    o pkg/seaice:
14      - use correct EXCH_UV for wind-forcing (on A-grid).
15      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
16        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
17    o pkg/exf:
18      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
19      EXF_INTERPOLATION:
20      - merge global_with_exf/code version of exf_interp_read.F
21        to the main code ;
22      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
23        reading the file ; Important: This options needs to be defined to recover
24        previous code.
25        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
26      - no longer loose real*8 precision along the way when using exf_iprec=64.
27    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
28      - change discretisation of evp-solver in order to avoid another exchange
29        (changes lab_sea) and clean up a little
30      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
31        help the adjoint (this also changes the results slightly)
32      - add a few "_d 0" where they had been missing in seaice_evp.F
33      - cleaning up: remove unused seaice_calc_rhs.F
34    o pkg/exf: some cleaning-up:
35      - change various "constants" into runtime parameters
36      - cleaned-up Large&Yeager04 routine which should eventually
37        replace exf_bulkformulae.F (changed names of S/R and CPP)
38        and merged various ALLOW_ATM_WIND options
39     only used with thsice pkg (in thsice_get_exf.F):
40      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
41        which are used when useStabilityFct_overIce=TRUE (= the default)
42      - change default values of ice & snow emissivity and scale downward LW
43        by ice & snow emissivity.
44    o pkg/thsice:
45     fix few little problems, in thsice_calc_thickn.F:
46      - growth vertically (and not laterally) if iceFrac == iceMaskMax
47      - melt laterally only if hIce < hThinIce (as the comments say)
48      and in thsice_extend.F:
49      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
50      - start to form ice as soon as the minimum ice-volume is reachable.
51     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
52      and cpl_aim+ocn
53    o pkg/kpp
54     - move computation of surface related input fields to KPP into a new
55       subroutine kpp_forcing_surf.F
56     - remove wrong (within bi,bj loops) EXCH calls.
57     - little cleaning (add argument myThid in last position, cvs header ...)
58     - for now, fix conservation problem by exchanging KPPviscAz (may not
59       be the best fix)
60    o pkg/seaice
61     - check for inconsistent evp parameter/cpp-flag combination
62     - remove leftover errIO flat for obsolete name list error handling
63    o OpenAD
64     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
65    
66    checkpoint59a
67    o pkg/seaice: some parameter clarifications and a little bit of clean up
68    o pkg/thsice: rename run-time parameters:
69       himin       -> hIceMin
70       himin0      -> hThinIce
71       hihig       -> hThickIce
72       i0          -> i0swFrac
73       transCoef   -> bMeltCoef
74       frac_energy -> fracMelting
75      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
76       with default values (for now) that do not change the results.
77      remove old version of thsice vars advection in pkg/seaice.
78    o in FFIELDS.h:
79      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
80      - make pLoad & sIceLoad always available (but still only used if
81         ATMOSPHERIC_LOADING is #define).
82    o pkg/kpp: replaced _KPP_RL with _RL
83    o bug fixes for vertical diffusivity computations when both KPP and
84        3D diffusivity arrays are used.
85    o pkg/seaice: fix bug in evp solver, while doing that
86      - change (improve?) discretization of stress computations for both
87        cgrid-lsr and evp solver
88      - add a new routine to compute strain rates
89      - the above changes lab_sea results
90      - add no slip conditions for evp solver (off by default), lsr-version
91        may follow
92      - fix exchange for shear at Z-points (does not change lab_sea)
93      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
94        (to force the user to pick a time step since there is not "safe" way
95        of choosing it)
96      - add principal stress diagnostics
97      - rearrange fields for evp a little to avoid having to call a: too many
98        exchanges and b: exchanges for stress trensor components which we do
99        not have.
100      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
101        of evp, complete rewrite for lsr case (latter is does not yet work
102        in all cases)
103    o pkg/kpp: add code to have mixing in shelf ice caverns
104      - add myThid to all kpp routines (long overdue)
105    
106    checkpoint59
107    o pkg/exf:
108      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
109        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
110      - move exf header files from lower_case.h to UPPER_CASE.h ;
111        add missing cvs Header & Name
112      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
113      - add namelist param. selectStressGridPosition, exf_monFreq
114      - retire many _CLIM routines, and remove data.exf_clim
115        + params moved to data.exf
116        + climsst, climsss now handled by exf_set_gen, i.e.
117          climss?period=0 refers to constant field,
118          climss?period=-12 to monthly forcing
119      - split up namelists in data.exf
120    o pkg/seaice:
121      - remove seaice_exch and seaice_exch_uv
122      - remove superfluous exchange of theta
123      - add myThid to seaice_budget_ocean/ice
124      - add new interface for atmospheric wind forcing (C-grid only)
125        + new routine
126        + two new field (taux, tauy for stress over ice)
127        + removed one global field (DAIRN) for C-grid case only
128    o pkg/thsise
129      - 2nd set of modifs for thsice adjoint in conjunction with exf
130    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
131    
132    checkpoint58y_post
133    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
134      vertical diffusivity, similar to that in MOM4; turned on using
135      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
136      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
137    o Added capability for 3D specification of background vertical diffusion
138      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
139      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
140      "data" file that contains the 3D vertical diffusivity coefficients.
141    o ice dynamics (pkg/seaice) with thsice thermodynamics:
142      - add code within pkg thsice to advect & diffuse sea-ice fields
143      similar to (and will replace) what has been added in  seaice_advdiff.F,
144      but: - conserving Mass, Heat & Salt.
145           - better when using non-linear advection scheme (not yet fully tested)
146           - can also be used in atmospheric set-up (for now, only the diffusion).
147    
148    checkpoint58x_post
149    o IO option for global-file compact format:
150      - add options when generating topology (utils/exch2/matlab-topology-generator)
151      - add I/O capability (pkg/mdsio).
152      - adapt utils/matlab/rdmds.m to read this format.
153      for now long-line format not yet supported by pkg/mdsio (& exch2).
154    o shelfice: add a few diagnostics
155    
156    checkpoint58w_post
157    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
158      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
159      (and replace horiVertRatio in NH code).
160      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
161                         and tutorial_plume_on_slope (sensitive to truncation)
162    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
163      directly to drive seaice model (C-grid only)
164    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
165     - reintroduce computation of wind from stress,
166     - compute tau (in exf_bulkformulae.F) from windstress averaged to
167       mass points to avoid tau = 0
168     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
169    o rdmnc.m: make it work with "global" files created with gluemnc
170    o rdmnc.m : some improvements in dealing with singleton dimension
171      (tested on all testreport mnc output files).
172    o genmake2: disable pkg/profiles if netcdf test fails.
173    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
174    o move call to cal_readparms up to make calendar parameters/variable available
175      to all packages
176    
177    checkpoint58v_post
178    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
179      useDynP_inEos_Zc tested.
180    o pkg/exf: changes to properly interpolate/mask/scale initial fields
181    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
182      and portions thereof.  See read_cs.txt for description and examples.
183    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
184      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
185      following the great-circle arc between those 2 points.
186    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
187      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
188    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
189     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
190     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
191     - still needs work (not working with some options ; efficiency to improve)
192       and serious testing.
193     - use this scheme for temperature & salinity in 2 advection test exp.:
194       advect_xy & advect_xz, respectively.
195    
196    checkpoint58u_post
197    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
198    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
199    o testreport: add option "-skipdir" to skip some test.
200    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
201      momentum calculation.
202    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
203    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
204      remove checkpoint.F and the_correction_step.F (no longer used);
205      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
206    o add option (linFSConserveTr) to correct for tracer source/sink due to
207      Linear Free surface
208    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
209    o pkg/thsice: fix reading mnc-pickups
210    
211    checkpoint58t_post
212    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
213    o pkg/mdsio:
214     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
215       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
216       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
217     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
218     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
219       either MDS_READ_FIELD or MDS_WRITE_FIELD )
220     - new S/R (to replace MDSWRITEMETA), which allows to write more
221       informations (variable names, time ...) to meta files.
222     - modify rdmds.m to give back the meta file content.
223    o pkg/diagnostics: change vertical interpolation to be safer, and more
224       flexible (define p-levels to interpolate to in data.diagnostics);
225      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
226       diagnostic pointer.
227    o pkg/seaice: more cleaning up of seaice_growth, added many comments
228    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
229    o fix multi-category seaice:
230     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
231       SEAICE_MULTICATEGORY
232     - fix short wave heat flux
233    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
234       and allow to use EVP solver. Change forward lab_sea: test both EVP
235       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
236    o Initial check-in of lab_sea adjoint
237      (very similar to natl_box_adjoint/code_seaice)
238      * used C-grid and EVP solver
239      * used KPP, GM/Redi
240      * uses inAdExact=.TRUE.
241      * gradient checks fail for both ADM and TLM
242        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
243        f.d. gradients actually seem more problematic than ADM, TLM gradients;
244        issue is related to forward mismatch between g77 an ifort
245    o pkg/seaice: overhaul of thermodynamics
246     - growth.F and groatb.F are replaced by new routine seaice_growth.F
247     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
248     - move a few global fields out of SEAICE.h into seaice_growth.F and
249       make them 2D (FICE/QNETO/ ...)
250     - remove FO (it is the same as QNETO)
251     - introduce a few local fields to avoid modifying external fields such
252       as atemp, etc.
253    
254    checkpoint58s_post
255    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
256      changed exf_set_gen.F so that
257        genperiod=0 means input file is one time-constant field and
258        genperiod=-12 means input file contains 12 monthly means
259    o CG2D: use pre-computed solver main-diagonal (stored in common block);
260      this affects truncation error ; generate new output file for exp. which
261      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
262        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
263        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
264        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
265        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
266        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
267    o start implementation of deep-atmosphere and anelastic formulation
268    o verification: remove 2nd copy of input files and use script "prepare_run"
269      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
270    o mom_common/vecinv/fluxform: fix a few initialisation isssues
271    o profiles: fix for multithreaded case
272    
273    o diagnostics: rename few diags:
274      s/'PRESSURE'/'RCENTER '/g
275      s/'TICE    '/'oceFreez'/g
276      s/'TAUX    '/'oceTAUX '/g
277      s/'TAUY    '/'oceTAUY '/g
278      s/'SWFLUX  '/'oceQsw  '/g
279      s/DIFx/DFxE/g
280      s/DIFy/DFyE/g
281      and add few ocean-forcing diagnostics:
282      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
283    o modifications to pkg/seaice/growth.F and budget.F, which change results of
284      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
285      as actual snow thickness.  It now refers everywhere to effective snow
286      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
287    
288    checkpoint58r_post
289    o modifications to pkg/seaice/growth.F, which change results of
290      lab_sea experiment: fixes pertain to melting snow over open water, to
291      masking EVAP under sea ice, and to using the correct AREA variable for
292      computations of EVAP, PRECIP, HSNOW, and GHEFF
293    o add ability to read bathy, salt, and theta using MNC (off by def)
294    o add flooding algorithm and advection of HSNOW for pkg/seaice;
295      both are turned off by default and do no change any results
296    o seaice advection with pkg/thsice: a step toward the use of non-linear
297      advection scheme, but #ifdef or commented out for now (requires more EXCH).
298    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
299      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
300      in natl_box (affects results @ truncation level: update output.txt)
301    o multi-threading and IO:
302      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
303      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
304        (needed to work with SingleCpuIO): tested in all verif. exp.
305    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
306      affects the results (but none of the verification test uses this scheme).
307    o Adding some pkg/diagnostics capability to pkg/seaice
308      (will certainly be subject to changes)
309    o ctrl: adding new control variables:
310      lwflux, lwdown, evap, snowprecip, apressure, runoff
311    
312    checkpoint58q_post
313    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
314      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
315      high_res_cube configuration by 4% on Columbia.
316    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
317      add (in global_with_exf/code) a version of EXF_INTERP_READ without
318      dynamical allocation (seems to work in multi-threaded).
319    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
320      single CPU io) so that TAF does not have to see EESUPPORT.h
321    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
322    
323    checkpoint58p_post
324    o obcs: stop if obcs is used with useCDscheme = .true.
325    o shelfice:
326     - fix a sign error so that no slip at shelfice interface works
327     - remove stop for combination non-hydrostatic code and shelfice. That does
328       not mean, that the results are correct, but at least they are numerically
329       stable
330    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
331    o added adjoint exch routined for all exch*3d* routines
332      and updated flow directives
333    
334    checkpoint58o_post
335    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
336      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
337    o change controling S/R for writing pickup file (new S/R do_write_pickup)
338      and clean-up reading/writing of pickup files.
339    o fix local version of read/write pickup (NH part) in rotating_tank/code
340    o simplify EXCH interface:
341     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
342     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
343    o added the regrid package
344    o shelfice:
345     - add a simple boundary layer scheme to reduce noise
346     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
347    
348    checkpoint58n_post
349    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
350       local variable (not in common block).
351    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
352      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
353      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
354        to work with SingleCpuIO.
355    o add "_d 0" to real constant of pkg/cfc subroutines ;
356       update exp. cfc_exemple & tutorial_cfc_offline output files.
357    o multi-threading and IO:
358      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
359        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
360      - barrier before and after reading.
361      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
362      - avoid using MDS_WRITELOCAL for LAND pkg output.
363      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
364        common-block variables ; Allows multi-threading with master-thread IO.
365    o change default MAX_NO_THREADS from 32 to 4 ;
366      and stop cleanly when MAX_NO_THREADS is too small.
367    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
368    
369    checkpoint58m_post
370    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
371       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
372    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
373       keep global_ocean.90x40x15 (for AD testing) with former secondary test
374       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
375    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
376        add MITgcm_tutorials (= code + all the tutorials)
377    o ecco, option to compute cost for total ssh (mean+anom)
378    o consistent with addition of ptracer and ssh in pkg/profiles
379    o profiles: adding ptracer and ssh
380    o testreport: change multi-test output-file name
381      (from output.txt.{name} to output.{name}.txt)
382    o profiles: now ok for mutli-tiles case
383    o seaice: add 4 parameters for different advection schemes for area,
384      (effective) seaice thickness, enthalphy, and snow height. Their default
385      is the standard parameter SEAICEadvScheme
386    o calc_gw:
387     - add cosFacU in zonal viscous flux (harmonic.visc.).
388     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
389       of tutorial_plume_on_slope.
390    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
391    o calc_gw: true flux-form, account for horizontal grid spacing.
392      update rotating_tank results, but not plume_on_slope (affected at
393      truncation level, 11 digits).
394    
395    checkpoint58l_post
396    o calc_gw:
397     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
398     - remove side-drag for now (need to fix it); update plume_on_slope results.
399     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
400    o commit code to make SST/SSS weights spatially variable
401      (based on either variable in-situ or variable initial T/S weights)
402    o pkg/ecco:
403      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
404        now based on horizontally varying weights wthetaLev, wsaltLev
405      * cost_averagesflags now returns year indices in addition to day, month
406      * sflux balance is performed on annual basis
407        (sflxumm, sfluxmm2, bal_sfluxmm)
408      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
409        including separate counting and multipliers
410    o pkg/rbcs
411      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
412    
413    checkpoint58k_post
414    o testreport:
415     - always build in dir. "build" (if not there, mkdir build instead of building
416       & running in input)
417     - run in dir run (if it exists), in build otherwise.
418     - call prepare_run (if input/prepare_run exists)
419     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
420    o pkg/exf modifications to interpolation and rotation routines for more
421       reasonable treatment of North Pole singularity: for tracers North Pole
422       value is set to northernmost zonal-mean value, for zonal velocity it is
423       set to zero, and for meridional velocity it is set to northernmost value.
424    o pkg/exf/exf_check_range.F
425     - add tile index to diagnostics and move stop statement to the very
426       end of the routine.
427    o pkg/diagnostics: (diagnostics_main_init.F)
428      define title of isomorphic variables according to the current config.
429    o pkg/thsice with pkg/seaice dynamics:
430    - fix domain of computation (interior only, required for exf) and do exchanges
431    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
432    o towards a standard way of dealing with multi-threading in MONITOR
433      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
434    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
435       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
436    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
437    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
438    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
439       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
440    o tracer advection:
441     - clean-up and simplify calc_common_factors.F
442     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
443       advection subroutine (but still not used within DST advection S/R)
444    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
445    
446    checkpoint58j_post
447    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
448      from file (collects calls previously in FORWARD_STEP)
449    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
450    o adjoint store dir. adjusted accordingly
451    o genmake2
452      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
453    
454    checkpoint58i_post
455    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
456      on wind stress (SEAICEstressFactor defaults to 1.)
457    o Total number of Timers is finite (<=40): comment out 2 non-essential one
458      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
459    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
460      on CS-grid: no longer loosing mass.
461    o exf & curvilinear-grid: no longer modify longitude xC & xG.
462    o pkg/ggl90: fix sloppy output and fix a bug
463    o pkg/seaice: added SEAICEuseEVPpickup parameter
464      - Set to false in order to start EVP solver with
465        non-EVP pickup files when using SEAICEuseEVP
466      - fix sign error in diffusion in seaice_calc_rhs
467    
468    checkpoint58h_post
469    * Modifications for bottom topography control
470      o replace hFacC by _hFacC at various places
471      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
472      o add non-self-adjoint cg2d_nsa
473      o update autodiff support routines
474      o re-initialise hfac after ctrl_depth_ini
475      o works for 5x5 box, doesnt work for global_ocean.90x40x15
476    * Adding verification for 5x5 box (4-layer) bottom topography control
477    
478    checkpoint58g_post
479    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
480       used for mean seasonal cycle, mean diurnal cycle); add an example
481       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
482    o pkg/ggl90:
483      - add parameter (minimum surface kinetic energy)
484      - fix bug (avoiding division by zero)
485    o couple pkg/thsice to pkg/seaice:
486      - modify advection in seaice to accomodate new scalar fields to be advected
487      - only muliDimAdection scheme work with seaice/thsice
488      - mapping of thsice-variables to seaice-variables, back and forth
489      - does not break the verification experiments, but does not give the
490        desired results either
491    o pkg/seaice
492      - make (default) second order advection a bit less confusing?
493    
494    checkpoint58f_post
495    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
496      to pkg/seaice):
497      - new routines thsice_map_exf and thsice_get_exf provide the interface
498      - add an additional formal parameter to thsice_solve4temp
499    o pkg/exf:
500      - add new fields wspeed, snowprecip (to be able to couple to thsice)
501      - correct Stefan-Boltzmann constant
502      - new parameter for longwave surface emittance
503      - separate some stuff from exf_bulkformulae into new routines  
504        exf_radiation, exf_wind
505      - add new parameters and constants: longwave emissivity for ocean, ice
506        and snow, evaporation parameters over ice
507      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
508        either wind from stress or stress from wind
509    o pkg/thSIce:
510    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
511    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
512       and THSICE_CALC_THICKN
513    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
514    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
515      to make debugging easier.
516    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
517    o pkg/bulk_force:
518      - clean-up comments and parameters ;
519      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
520    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
521      generate new output for test-experiment: aim.5l_cs.thSI
522    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
523      testreport accordingly
524    
525    checkpoint58e_post
526    o SEAICE_CGRID adjoint done
527    o R_STAR adjoint implemented.
528      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
529      * need to sort out init. of h0facc, etc.
530    o Make pkg/profile fully independent of ecco,cost, etc. stuff
531      to be able to use it in pure forward.
532    
533    checkpoint58d_post
534    o upgrade simple test-experiment to tutorial example:
535     step.1: duplicate the experiment and (step.2) will remove the old copy.
536      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
537      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
538      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
539      tutorial_global_oce_biogeo    <- copy of dic_example
540      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
541      tutorial_plume_on_slope       <- copy of plume_on_slope
542      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
543      tutorial_global_oce_optim     <- empty for now (David ?)
544      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
545     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
546    o correct a sign problem in cost_scat.F
547    o obcs and ptracers: fix boundary conditions for advections schemes
548      with larger stencil
549    o thsice adjoint: start
550    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
551      completeness
552    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
553      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
554    o ptracers adjoint:
555      * avoid extensive recomputatations
556      * fix missing re-init. of gptr (missed by TAF)
557    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
558      me to turn off the excessive output to STDOUT that this package produces
559    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
560      and add those terms in Vector-Invariant formulation.
561    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
562      if the control period (xx_hfluxperiod etc) is 0
563    o in profiles pkg, clean routines and fix details
564    o in ecco pkg, reading ssh data:
565      fix problem in case the model does not start at iter0=0
566    o fix mnc-pickup/restart for ptracers
567    o new package prifiles:
568      code to compute profile-based cost by Gael Forget
569      (modifs in ecco, ctrl, autodiff)
570    o Benign bug fix in initialization (spotted by M. Mazloff) of
571      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
572    
573    checkpoint58c_post
574    o adjoint: finish NLFS adjoint and provide reference output in
575      verification/global_ocean.90x40x15/results_ad_nlfs
576    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
577      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
578      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
579      with SEAICE_CGRID defined.
580    o move calendarDumps from "data" to "data.cal" and clean-up the code
581      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
582    o add useEXF & useCAL flags (for now, set in hard-coded way)
583    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
584      (were missing in NH mode, and wrong in quasihydrostatic mode).
585      waiting for Chris updated version of calc_gw to add those CALLs.
586    o fix bug in quasihydrostatic S/R ;
587      add a test for this option: global_ocean.90x40x15.qshyd
588    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
589      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
590    o add on/off flag useOffLine for package OFFLINE
591    o seaice:
592      - modify advection so that it works also on the C-grid
593      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
594        problem in multi-tile runs with C-grid
595      - add flags for clipping ice velocities and/or masking solver forcing
596      - fix drag (ocean on ice) formulation and a bug that caused noise in the
597        C-grid solver
598      - added a few comments to seaice_diffusion.F
599      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
600        are now exclusive)
601      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
602        required re-ordering the code a little:
603       + make DAIRN global variable (defined in SEAICE)
604       + move computation of the viscosities eta and zeta into a new separate
605         routine (because I need to recompute them in seaice_ocean_stress.F)
606    
607    checkpoint58b_post
608    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
609      update output.txt of exp. aim.5l_cs.thSI
610    o various mnc cleanups and improvements:
611      + shrink lookup tables by factor of ~4
612      + better error reporting when running out of lookup space
613      + able to handle longer path/file names (up to 500 chars)
614    o adjoint:
615      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
616      - TBD: "hidden" mom_vecinv recomp. in dynamics
617    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
618     (allow to differentiate between forcing components using new integer flags:
619      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
620     and add new flag to put Dissipation tendency out of Adams-Bashforth.
621    o ecco
622      - enable trend removal from SSH anomaly obs.
623    o adjoint
624      - a fix for PmEpR when #undef EXACT_CONSERV
625      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
626      - try to fix "hidden" recomp. in forward_step for NLFS
627        (NLFS seems broken sometimes after I checked it in)
628    o seaice:
629     - add c-grid version of the dynamic solver:
630       + three new routines that are the c-grid substitute lsr, dynsolver
631         and ostres
632       + put a few fields that were local to dynsolver into global common
633         blocks, so that I can move the computation of stresses etc into
634         seaice_lsr (saves coding but may break the adjoint).
635     - replace more hardwired parameters by runtime parameters
636     - add ice masks that mask the rhs of the implicit solvers where there
637       is no ice (commented out in seaice_dynsolver, because i am not sure
638       if this works properly), eventually this should replace the clipping
639       of ice velocities in seaice_dynsolver to +/-40cm/s.
640    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
641      include it only where its needed
642    o move balancing of fluxes before the call of external_forcing_surf
643    o seaice:
644      - correct units of turning angles (now they are really in degrees)
645      - move computation of GWATX/Y out of main routine into dynsolver
646      - initialize GWATX/Y in seaice_init
647    o Apply mask on Fresh-Water flux (needed for SSH forcing).
648      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
649    o seaice: add runtime flags for turning angles (default to zero)
650    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
651      and trend from exf forcing and ctrl control adjustments
652    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
653      (since checkpoint57x_post)
654    o change the default rotation period to 86164.s = the Earth rotation
655    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
656      and based on a reference stratification. Tested within hs94.cs-32x32x5.
657    o seaice advection: add code for choosing between the default (2nd order
658      central differences) and multiDim advection schemes provided by
659      pkg/generic_advdiff
660    o seaice:
661      - removed all references to SEAICE_GRID.h fields from
662        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
663        (cubed-sphere configuration will change a little)
664      - grid computations in seaice_init are obsolete now.
665      - cleaned up code a little so that is easier to read (hopefully).
666      - added new (better?) discretizations of default advection and diffusion
667        (turn on with SEAICEuseFluxForm)
668      - replace 1 in 3d global fields by kSurface in growth.F
669      
670    checkpoint58a_post
671    o seaice:
672      - bug fix in advect.F
673    o shelfice:
674      - separate shelfice load anomaly from pload (breaks with time
675        dependent forcing), => introduce constant field shelficeLoadAnomaly.
676        Its default is 0., but it may be computed more cleverly from (unknown)
677        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
678        done offline. A good approximation of the pressure load anomaly is
679        necessary to avoid large initial adjustment processes underneath
680        deep-reaching shelfice.
681      - small fix in ISOMIP shelfice_thermodynamics
682      - add more sophisticated thermodynamics of Hellmer (1989), this is
683        now the default
684      - give a few constants more intuitive names
685    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
686      if bulk formulae are used in long integration (especially EmPmR). Turn
687      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
688      if balancePrintMean, the imbalance that is substracted is printed to
689      STDOUT.
690    o fix bug (typo) in obcs_apply_eta.F
691    o add a new package shelfice which enables us to model the circulation
692      underneath shelf-ice with draughts of hundreds of meters.
693     - works
694     - to do: + include improved thermodynamics
695              + check whether kSurfC (from model/inc/SURFACE.h) can be used
696                instead of new field kTopC
697              + can we use topoFile, Ro_surf and existing code in ini_depth.F
698                instead of new field R_shelfIce and new code in ini_depth.F
699                and ini_mask_etc.F?
700              + adjust vertical mixing schemes?
701    o seaice pkg:
702     - add a cpp-flag to include a simple formula for a salinity dependent
703       freezing point of sea water at the surface
704     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
705       meridional stresses are now different (and hopefully correct)
706    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
707       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
708       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
709    o pkg/diagnostics: add options and parameters for regional-statistics
710       diagnostics ; define regions by reading a region-mask from a file
711       (might add other options later)
712    o pkg/bulk_force:
713     - add option and parameters to use AIM surface-flux formulae.
714     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
715       others forcing fields (defined in PARM05, parameter file "data") are loaded
716       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
717     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
718     - use the right EXCH call for uwind,vwind (to work on CS-grid).
719     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
720       and parameters (note: calcWindStress replaces .NOT.readwindstress).
721     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
722    
723    checkpoint58
724    o add "--embed-source" option to genmake2 which, when the supporting
725      tools can be compiled (as determined by genmake2) will turn on the
726      embed_files package which then embeds the entire MITgcm source code
727      (*.[fFhc] + Makefile) used for the build within the executable
728      - requested by CNH but off by default
729      - adds a paltry <9MB to the mitgcmuv executable in most cases
730      - only writes the output when useEMBEDSRC in eedata is true
731    o clean up 3-dim. relaxation codes:
732      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
733      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
734      * Thanks to Tom Haine for testing!
735    
736    checkpoint57z_post
737    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
738      affects output (@ truncation level) of exp. plume_on_slope ; updated.
739    o fix the pickup behavior for obcs in combination with ptracers
740    o fix a bug in ptracers_external_fields_load
741    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
742      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
743    o transfered surface NH pressure to eta field (if exactConserv).
744    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
745         and update lab_sea output.txt file.
746    o completing 3-dim. relaxation code: additional term
747         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
748      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
749      * At compile time, in "EXF_OPTIONS.h" set
750          #define  ALLOW_CLIMTEMP_RELAXATION
751          #define  ALLOW_CLIMSALT_RELAXATION
752      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
753          tauThetaClimRelax3Dim = 15552000.0,
754          tauSaltClimRelax3Dim  = 15552000.0,
755      * 3 cases:
756          1) Use a constant-in-time 3-dim. field
757          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
758          3) Real-time relax. to time-evolving prescribed field
759    o Adding Laplacian-type smoothness constraint on
760      initial and boundary (forcing) controls (ic, bc)
761      * enable at compile-time via
762        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
763      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
764      * Absolute scale somewhat unclear so far
765      * no area weighting was included since no other cost term does so far
766    
767    checkpoint57y_post
768    First step for a NLFS adjoint
769    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
770    o new init. routines for calc_r_star, calc_surf_dr
771    o still need to deal with ini_masks_etc
772    o testreport seemed happy
773    checkpoint57y_pre
774    
775    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
776    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
777    o add new offset feature to offline pkg (plus minor cleanup)
778    o cfc fixes for final year of integration
779    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
780      be in GCHEM_OPTIONS).
781    
782    checkpoint57x_post
783    o fix testreport Pb in multiple test experiment.
784    o cleanup our namelist syntax in verification:
785      - make it more F95 standards compliant (some work still needed)
786      - allows the vast majority of our tests to work with gfortran
787    o Non-Hydrostatic:
788     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
789     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
790    o Allow to apply AB on T,S rather than on AB(gT,gS):
791     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
792     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
793       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
794     - need a "clever" read_pickup to restart from the other AB formulation
795    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
796    o remove some unused variables (reduces number of compiler warnings)
797    o adjoint
798      * Disable useVariableViscosity for adjoint for time being
799        (there are a number of extensive recomputations)
800      * Initialize certain variables needed for adjoint
801    
802    checkpoint57w_post
803    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
804                 fix the singleCpuIO RS version of MDSWRITEFIELD
805       and add a WARNING if using globalFiles=T with multi-processors.
806    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
807      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
808    o tracer advection scheme:
809      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
810       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
811       was not very convenient).
812      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
813       (further tests needed for the implicit DST & Flux-Limiter schemes).
814    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
815      and sRef for convenience, handy, when you want to initialize
816      ptracers in a large domain with a constant non-zero value. Also,
817      untangle ptracers_init.F a little.
818    
819    checkpoint57v_post
820    o change dome exp. to use variable viscosity in side-drag terms.
821    o remove all the files from the cfc_offline test since they are now
822      incorporated into tutorial_cfc_offline which has been producing
823      identical results for a few days of testing
824    o add new parameter: sideDragFactor to enable half-slip-side BC
825      and change side-drag S/R to use viscosity from mom_calc_visc
826      (can switch back by setting sideDragFactor=0.); affects results at
827      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
828       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
829    o vorticity & strain are now computed without masking, to account for
830      no-slip-side BC in variable viscosity calculation ; mask is applied
831      anyway later on, before computing advection/coriolis terms.
832    o modify exp4 to test new obcs support for reading from external files
833      and for passive tracers
834    o fix behavior of ptracers_monitor when monitor output is written to a
835      netcdf-file; still not independent of monitor.F (writes in the same
836      file).
837    o change default value of tRef (put a uniform, meaningful value for ocean
838      & atmos) and initialize sRef (was missing, as Martin mentioned).
839    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
840      to be proportional to enstrophy dissipation length.  Thus,
841       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
842      This is now consistent with Smagorinsky and with the manual.
843    
844    checkpoint57u_post
845    o OBCS and PTRACERS: add open boundary support for passive tracers
846      - either use homogenous (pseudo) v.Neumann conditions or prescribe
847        OB-values from file; this is not different from the way theta and salinity
848        are treated
849      - however, Orlanski-radiation conditions are not supported, and the model
850        will stop if you use pTracers and Orlanski at the same time.
851      - beefed up the rountine obcs_external_fields_load: now only those open
852        boundary values are overwritten with values from files for which there
853        are really files, otherwise the OB-fields remain untouched. This makes
854        it possible to use different OBs at different ends of the domain (as
855        with EXF)
856    o reduce number of exch calls in shap_filt (s2).
857    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
858      truncation level) 4/5 MLAdjust test results (11&12 digits match).
859    
860    checkpoint57t_post
861    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
862    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
863      same truncation, independent of the face number: affects affects several
864      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
865    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
866      note that biharmonic viscosity + no-slip was not tested in any experiment.
867    o fix bug in non-linear free-surf side-drag ; generate new output for
868      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
869    o make mnc honor the writeBinaryPrec flag for most kinds of output
870    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
871    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
872      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
873    o add brackets in multi-terms sum to get same truncation, independent of
874      the face number (manage to get exactly same value of gU,gV at the cs-edge)
875      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
876    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
877      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
878      a maximum grid-scale Reynolds number.  Also, changes all length calculations
879      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
880      Suggested values of viscosity parameters found in mom_calc_visc.
881      Many new viscosity diagnostics available.
882    
883    checkpoint57s_post
884    o Add clearing-house for viscosity calculations, mom_calc_visc and
885      correct numerous bugs in LeithD and Smagorinsky discretizations.  
886      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
887      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
888      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
889      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
890      The Strain-Tension form is now called with useStrainTensonVisc=.true.
891      ViscAhStrain and viscAhTension are now retired.
892    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
893    o In response to JMC's bug report, genmake2 now ignores any soft-links
894      that it finds in the *current* directory when searching for files.
895      Soft-links found in any other source directories will still work as
896      they did before.
897    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
898      a C routine to unlimit the stack size
899    o mnc-ify pkg/aim snapshot vars
900    o mnc-ify pkg/land as requested by Daniel
901    o various changes to mnc including:
902      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
903      - output can now be grouped so that all files within a group
904          change the ITER portion of their names in lock-step together
905      - can now read ("global") PER-FACE (in addition to PER-TILE) files
906          and works with both EXCH1 and EXCH2 (but needs more testing)
907      - writing works for all verification test cases w/ g77 on Linux
908    
909    checkpoint57r_post
910    o make MNC variable initialization happen earlier
911    o add diagnostics for (almost) each term of the momentum Eq.
912    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
913    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
914    o remove MINIMAL_TAVE_OUTPUT option ;
915      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
916    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
917      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
918    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
919    o add time-dependent SST, SSS control
920    o cost terms in ecco/ modularized (new cost_generic.F)
921    o cost_averages routines are modularized (new cost_averagesgeneric.F)
922    o new infrastructure for seaice model vs. obs misfits in seaice/
923      * driver from the_main_loop.F is seaice_cost_driver.F
924      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
925      * gradient check in Exp. 6a of natl_box_adjoint/
926    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
927      (see README file)
928    
929    checkpoint57q_post
930    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
931    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
932      - bug was reported by Jean-Michel and Ian Fenty
933    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
934      update exp. cpl_aim+ocn output.
935    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
936      Needed for high-res. runs with large global files
937      to be able to limit tapelev size
938    o Changed some tests for adjoint:
939      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
940      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
941      * global_ocean.90x40x15/ back to default 3-level checkpointing
942    o Modifications to enable scripted COMMON to MODULE conversion
943      * verification/OpenAD/code/ has necessary scripts and description;
944      * converts, compiles and runs successfully;
945    
946    checkpoint57p_post
947    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
948    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
949      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
950    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
951    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
952      (was already the case for dissipation with mom_vecinv,
953       and also the case for grad.PhiHyd when staggered-timeStep)
954      This will allow to put dissipation out-off the AB time-stepping.
955     Unfortunately, affects truncation error. Update output of exp. that "fails"
956      (cg2d matching number) and leave the others for later: front_relax(10),
957      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
958      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
959    
960    checkpoint57o_post
961    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
962      (2) its ready to be documented during the 20050801 DocFest
963    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
964      for ideal_2D_oce and lab_sea on linux_ia32_g77
965    o set to #undef CTRL_SET_OLD_MAXCVARS_30
966      in global1x1_tot/code_seaice_adj to access indices 32, 33
967      (worth another tag)
968    
969    checkpoint57n_post
970    o adding precip control xx_precip 32
971    o adding swflux control xx_swflux 33
972    o Replacing 10 forcing penalty cost routines by 1 generic.
973    o Implementing partitioning in time-mean and variable adjustment
974      for atmos. state.
975    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
976    o in natl_box_adjoint:
977      * updated exp 1 to 10
978        (but does not have time-mean vs. variable split results yet)
979    o updated global1x1/*_seaice_adj/
980      to incorporate latest changes
981    o enable useSingleCpuIO for mdsio vector routines
982      (applies in particular to tapelev I/O)
983    o removed inefficient K-loop in all active_file*control*.F
984    
985    checkpoint57m_post
986    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
987      and advect_cs (use EXCH-2 and standard cs-32 grid files).
988    o pkg/exch2: filling of face-corner halo regions is optional
989      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
990    
991    checkpoint57l_post
992     tag before updating tutorials (pre-release-2)
993    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
994       for output and interpolation of input fields onto model grid)
995    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
996       Affects results of exp. rotating_tank ; update output.txt.
997    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
998          and taking the square quantity and/or using a fraction-weight field.
999    o fix aim_diagnostics_init.F mate numbers.
1000    o add mnc output capability to diagnostics/diagstat and update
1001      our cvsignore files for the ACSII output generated
1002    
1003    checkpoint57k_post
1004    o lab_sea now uses diagnostics package and provides a suite of
1005      new EXF diagnostics output.
1006    
1007    checkpoint57j_post
1008    o exf
1009      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1010        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1011        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1012      * extended diagnostics output
1013        - now includes all EXF variables
1014        - hs, hl moved to common block
1015        - separate S/R for diagnostics, called after ctrl vector is added
1016        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1017        - EXFqnet contains true Qnet (i.e. includes qsw)
1018      * updated verif. lab_sea, global_with_exf
1019      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1020        to ensure that diagnostics sees a true EXFqnet
1021    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1022    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1023      several times with different frequencies.
1024    o mnc-ify the thsice package as requested by Daniel Enderton
1025      - the monitor--MNC output needs work
1026      - many attributes need to be added (most are currently blank)
1027    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1028      - many attributes need to be added (most are currently blank)
1029    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1030    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1031    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1032      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1033         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1034    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1035     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1036    
1037    checkpoint57i_post
1038    o Diagnostics package was changed: diagnostic allocation is now deactivated
1039      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1040    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1041      add 1rst Order upwind vertical Shear.
1042    o add a quick fix for A/B checkpointing in OFFLINE mode
1043    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1044      end-run around the C/Fortran linking horror in eesup/src/timers.F
1045    o added pkg/runclock: allows user to terminate run based on wall clock
1046    o added non-hydrostatic scaling parameter: nh_am2
1047    o pkg/my82: futile attempt to make results compiler-independent by adding
1048      some "_d 0", etc. no effect.
1049    o for mnc output, fill the 'T' coordinate var with myTime and create a
1050      separate 'iter' variable for iteration count
1051    o pkg/diagnostics:
1052      add new capability: output of Global/Regional & per-level statistics ;
1053      tested against monitor output (including land & thSIce) on various exp.
1054    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1055    
1056    checkpoint57h_done
1057      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1058      data.diagnostics, data.gchem, data.ptracers) is done.
1059    
1060    o pkg/diagnostics: prepare for Global/Regional statistics.
1061      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1062    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1063      and rename it: DIFFERENT_MULTIPLE
1064    
1065    checkpoint57h_post
1066    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1067    o pkg/diagnostics: change output frequency, now in seconds (instead
1068      of Nb of iterations). This requires to change data.diagnostics.
1069    checkpoint57h_pre
1070    
1071    o in mnc, let the user create the output dir if both mnc_outdir_date
1072      and mnc_outdir_num are false
1073    o add fflags() to pkg/diagnostics which allows one to specify, on a
1074      per-file basis, the file precision [default behavior is unchanged]
1075    o added diagnostics to pkg/kpp, including computation of mixed layer
1076      depth based on a temperature/density criterion
1077    o updated verification/natl_box to test the new pkg/kpp diagnostics
1078    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1079    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1080    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1081      not mnc -- this mistake was found by JMC and is now corrected
1082    
1083    checkpoint57g_post
1084    o add Adams-Bashforth 3rd Order time stepping:
1085      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1086      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1087    checkpoint57g_pre
1088    
1089    o make lambda[Theta,Salt]ClimRelax spatially varying
1090      (default remains spatially uniform constant based on tau)
1091    o added new control variables
1092      * init. uVel, vVel, etanN
1093      * lambda[Theta,Salt]ClimRelax
1094    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1095      (suggested by G. Forget)
1096    
1097    checkpoint57f_post
1098    o add parameter "baseTime" = model base time = time at iteration zero
1099      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1100      account for baseTime shift
1101    o move Coriolis arrays from PARAMS.h to GRID.h
1102    checkpoint57f_pre
1103    
1104    o mnc-ifying the seaice package
1105    o introduced an alternative length scale calculation for use in the limiting
1106      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1107    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1108    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1109      as well as grad(vort3).  Made it compatible with both approximate form
1110      for the cubed sphere and full form of these gradients.  Added flag
1111      useFullLeith to select between approximate and full form.  
1112    o add "d0" in getcon.F to reduce differences between compilers/platforms
1113      update output.txt of exp. fizhi-gridalt-hs
1114    o change port_rand funtion to allow to set the seed.
1115    o fix obscure MNC bug involving conversion between reals and integers
1116      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1117        new version is now more standards-compliant
1118    o adjoint-related modifications
1119      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1120      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1121      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1122    
1123    checkpoint57e_post
1124    o Adding eddy stress controls a la Ferreira et al.
1125    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1126    
1127    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1128      update output.txt of exp. fizhi-gridalt-hs
1129    o add more "Z" dimensions and associated coordinate vars to MNC
1130    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1131    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1132      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1133      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1134      months and years.  Requires pkg/cal.
1135    o diagnostics: add pickup functionality
1136      - off by default for backwards compatibility
1137      - current version only uses MDSIO -- MNC will be added
1138    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1139    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1140    
1141    checkpoint57d_post
1142    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1143    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1144      output from the diagnostics package
1145    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1146    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1147      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1148    o add coordinate variables to the MNC output from the diagnostics package
1149    o change MNC-flags default value: true when useMNC=TRUE
1150    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1151      the ability (off by default) to read the grid information using MNC
1152    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1153    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1154    o do snap-shot diagnostics at the middle of the time-interval (instead of
1155      at the end).
1156    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1157      new test for AIM with thSIce + slab-ocean
1158    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1159    o move state variable diagnostics to the beginning of the time step ;
1160      (note: still needs some work specially for snap-shot diagnostics)
1161      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1162    
1163    checkpoint57c_post
1164    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1165    o generate new output.txt files on faulks with g77 & the new -ieee option
1166    checkpoint57c_pre
1167    
1168    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1169      update output.txt of exp. global_ocean.90x40x15
1170    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1171      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1172    o add saltFlux(+File) forcing capability with periodicExternalForcing
1173    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1174    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1175    o improvements for the MNC output from DIAGNOSTICS:
1176      - correct handling of the unlimitied dimension
1177      - all dims now have associated coordinate variables
1178      - variables located at U, V, and Corner ("Z") points are now written
1179        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1180        *all* data points are output
1181    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1182    o added pkg/seaice/seaice_monitor.F
1183    o mdsio_readfield.F can now read files visible only to master MPI process.
1184    o pkg/seaice: some test code for ice-modified ocean stress
1185    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1186      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1187      spurious negative numbers for precipitation and humidity.  Will cause
1188      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1189    o pkg/ctrl/
1190      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1191        May be enabled via doPackDiag
1192      *  introduce z-scaling of
1193         + gradient (doZscalePack) and
1194         + control (doZscaleUnpack)
1195    o pkg/mdsio/
1196      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1197      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1198    
1199    checkpoint57b_post
1200    o simplify options in diagnostics_fill arguments (remove weird combinations)
1201    o fix MNC coordinate variables so that they now contain per-face index
1202      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1203      general, EXCH2 grids are only aligned to a "local" coordinate system
1204    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1205    o Implement instantaneous output within pkg diagnostics:
1206      setting a negative frequency in data.diagnostics produces
1207     "snap-shot" output (as opposed to time-average if freq > 0)
1208    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1209      NOTE: change ptracer diagnostics name: use 2 characters to work with
1210            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1211    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1212      becomes the coordinate variable for the 'T' dimension
1213    o add CF-style coordinate variables to MNC
1214      - just a first cut:  numbers are meaningless on the cubesphere and
1215        missing along the T axis but otherwise it works!
1216    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1217    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1218    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1219      this is based directly on what the model compute, so that the content of
1220      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1221    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1222    o clean up build options files for SunOS, in particular
1223      - remove -traditional from xmakedepend
1224      - change -xarch=v9 to -xarch=native for f77
1225      - restore use of make (not gmake)
1226      - add CC=gcc if using g77
1227    o changes per discussion of AM, JMC, & EH3 today:
1228      - move redundant "grid" variables out of "state" -- in preparation of
1229        creating proper CF-style coordinate variables and in recognition
1230        that any/all grid variables can be easily copied (eg. w/NCO) from
1231        the grid files into any of the other NetCDF files
1232      - *always* output grid variables with MDSIO (this will eventually be
1233        changed)
1234      - output MNC grid file if useMNC is true
1235    o every instance of _END_MASTER() has been found and replaced with
1236      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1237      preprocessors
1238    o re-arrange diagnostics pkg initialisation:
1239     - allow each package to extend the available diagnostics list
1240     - add some checking and fix small problems (multi-threaded, ...)
1241     - new S/R diagnostics_fill (replace fill_diagnostics):
1242       look through the short list of active diag. (instead of the long list)
1243       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1244    
1245    checkpoint57a_post
1246    o this set of changes restores TAMC compatibility
1247      tested for global_ocean.90x40x15 adjoint on trough
1248      (what a pain)
1249    
1250    checkpoint57a_pre
1251    o some modifs in tools/build_options for sunos
1252    o call ctrl_pack for ctrl at end for optimcycle=0
1253    
1254    checkpoint57
1255    o add horizontal bi-harmonic viscosity for vertical velocity
1256      - new parameter viscA4W (defaults to viscA4)
1257      - affects only non-hydrostatic code
1258      - to be done: no-slip lateral boundary conditions
1259    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1260    o implement Implicit Vertical advection for pTracers
1261    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1262      (implemented also for implicit vertical diffusion & advection)
1263    o OBCS: extend application of tracer open boundary conditions
1264      to a strip beyond the boundary of width Olx/Oly
1265    o add call monitor to TAF set of required calls (flow directives)
1266      and include in natl_box_adjoint
1267    o untangle a few ifdefs related to cost, ctrl, autodiff
1268      untangel a few ALLOW_ECCO_OPTIMIZATION
1269    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1270      (theta2, salt2 in ecco_cost_weights)
1271    
1272    checkpoint56c_post
1273    o OBCS as control variables
1274      - update ctrl_ad_diff.list, obcs_ad_diff.list
1275      - remove balance of obcs controls from default
1276      - fix index bug nobcs in ctrl_init
1277      - fix dummy fields filen in ctrl_pack
1278      - add dummy weights for obcs
1279    o lsopt: comment out fort.94 output
1280    o optim:
1281      - remove unnecessary header files
1282      - adjusted namelists
1283      - add xerbla.F to Makefile
1284    o exf:
1285      - multiple modifications of exf_check_range
1286      - unit change in exf_init_runoff from [m/year] to [m/s]
1287    o mdsio:
1288      - i/o-vector change debugLevel from debLevA to debLevB
1289    
1290    checkpoint56b_post
1291    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1292      is called from DO_THE_MODEL_IO
1293      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1294      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1295      - clean up PTRACERS_WRITE_TIMEAVE a little
1296    o add another verification experiment that tests both the cfc-pkg and
1297      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1298      reactive tendencies treated inline with regular timestepping
1299    o testreport previously did a lousy job of comparing small numbers, so
1300      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1301      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1302      testreport.
1303    o ptracers_monitor: bug fix for MPI
1304    
1305    checkpoint56a_post
1306    o GCHEM: finish reorganizating the package
1307      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1308        (introduces another 3D-array for each passive tracer, but only if
1309        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1310        gchemTendency is not needed because the timestep is done separately)
1311      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1312      - GCHEM is now---more or less cleanly---separate from PTRACERS
1313      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1314        so clear to me how that should be done in a general way.
1315    o CFC: improve formatting of output in CFC_ATMOS
1316    o PTRACERS:
1317      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1318        that ALL experiments with ptracers enable can be checked. This makes
1319        GCHEM_MONITOR obsolete.
1320      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1321        monitorFreq
1322      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1323    o add PTRACERS (PTR0[1-5]) to testreport output
1324    o exf_check_range:
1325      * default changed to .TRUE.
1326      * will check values for niter0 if debLevA, every timestep if debLevB
1327      * STOP in exf_check_range if 'out of range'
1328      * range chosen generous to allow for potential extema
1329      TBD: a version with stricter range
1330           permitted range would be runtime parameters
1331    o GMredi:
1332      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1333      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1334      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1335    o GCHEM:
1336      - move call to GCHEM_FORCING_SEP, so that it is now called before
1337        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1338      - introduced a useGCHEM runtime flag and applied it everywhere.
1339      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1340        this flag is now only visible within GCHEM-pkg routines.
1341      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1342        be replaced by a 3D array that is computed before thermodynamics; for
1343        this, the tracer ID iTracer had to be included into the parameter list
1344        of ptracers_forcing
1345      - set up forward_step to call gchem_forcing, that will replace
1346        gchem_forcing_int in ptracers_forcing
1347      - cleaning up
1348    o small cleaning of exch2: remove files that are also in eesupp/src
1349    
1350    checkpoint56
1351    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1352    o mnc: cleanup "full" files--fixes out-of-memory problem
1353    o ECCO-GODAE
1354      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1355      * fully merged and updated from SIO code
1356        windstress sign change affects
1357        - exf_inscal_[u/v]stress
1358        - sign of xx_tau[u/v] adjustments
1359        - signs in cost_scat
1360      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1361      * natl_box_adjoint updated and compressed
1362      * 2-level checkpoint switch added
1363        (tested in EXP. 1 of natl_box_adjoint)
1364      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1365    o SVD
1366      * first complete, non-hacked version for SVD calculations
1367      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1368        performed via direct access files admtlm_vector.it????
1369        (via ctrl_[un]pack)
1370      * optimcycle is used for ARPACK iteration counter
1371        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1372      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1373        and add linear transforms where necessary
1374      * controls are initial/final SST, SSS (can be extended; need to check
1375        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1376    o mdsio: filename info to both stderr, stdout
1377    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1378      from sign change
1379    
1380    checkpoint55j_post
1381    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1382      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1383    o add consistent build directories and .cvsignore files to verification
1384    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1385    o make all subroutines 30 or less characters in length for certain older
1386      compilers to work (a thorough search only turns up two routines in
1387      pkg/ptracers)
1388    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1389      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1390    
1391    checkpoint55i_post
1392    o change arrays for total vertical diffusivity (2.D if explicit,
1393      3.D if implicit) ; each ptracer uses its own background value.
1394    o added mnc/NetCDF output capability to ocn_compon_interf
1395      - added bits to verification/cpl_aim+ocn so that it can run on
1396        ITRDA and other clusters without the mpirun "-wd" option
1397    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1398      configuration
1399    o give MNC the ability to create additional files rather than
1400      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1401      - the default is just less than 2GB which is a practical limit
1402        on many systems
1403    o Compute the non-local term using either KPP vertical diffusivity (=default)
1404       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1405    
1406    checkpoint55h_post
1407    o add verification test "vermix"
1408    o remove all the *_ioinc flags and replace with the single global
1409      outputTypesInclusive flag
1410    o allow to set a vertical profile of vertical diffusivity for T & S
1411    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1412    o useMNC moved from data.mnc to data.pkg
1413    
1414    checkpoint55g_post
1415    o Renaming carbon AD experiments to comply with testreport conventions
1416    o Updating adjoint of Held-Suarez hs94.1x64x5
1417    o Fixing directives for non-ECCO forward_step, after ECCO directives
1418      have been fixed to avoid recomp. of do_oceanic_phys
1419      Works well for global_ocean.90x40x15,
1420      but recomp. issue remains for carbon
1421    o Updating adjoint output for natl_box_adjoint after
1422      pkg/ecco has been modified (see taga c55d_post)
1423    
1424    checkpoint55f_post
1425    o rename to timeave_init_fixed
1426    
1427    checkpoint55e_post
1428    o some delicate re-shuffle of store directives to avoid one
1429      extra call of do_oceanic_physics
1430      affects ecco_the_main_loop.F, do_oceanic_physics.F
1431      checkpoint_lev1_directives.h
1432    o NB: this may break global_ocean adjoint temporarily,
1433      but it is clear how to fix it. Will do later, need this now.
1434    
1435    checkpoint55d_post
1436    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1437    o ecco_cost_weights is modified to 1x1 runs
1438    o modifs to allow observations to be read in as
1439      single file or yearly files
1440    o enable to read exf forcing fields as either
1441      single file or yearly files (flag useExfYearlyFields)
1442    checkpoint55d_pre
1443    
1444    o switch between 2-level and 3-level checkpointing
1445    o add ability of MNC to write local and "partial" (eg. 2D slices where
1446      the full 3D field is never actually stored) arrays to NetCDF files
1447      with the correct (that is, the complete multi-dimensional) set of
1448      array indicies
1449      - used in mom_vecinv() to write the diagFreq output
1450      - tested (demonstrated) in verification/aim.5l_cs
1451    o further mnc-ification
1452      - add verification/lab_sea to the list with mnc setups
1453      - fix undefined mnc v-names in cd_code
1454      - add kpp to mnc output (both snapshot and timeave)
1455    o non-hydrostatic code
1456      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1457        in calc_gw.F
1458      - defaults to viscAh
1459      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1460        friction or Leith) in non-hydrostatic mode, as long as there is
1461        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1462    o pkg/cost
1463      extend simple cost functions to treat time mean quantities
1464      (T,U,V) via cost_accumulate_state from cost_tile
1465    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1466        be 2 times larger than the minimum size the advection scheme requires.
1467        now get a perfect conservation of salt in advect_cs test-exp (updated)
1468    o GGL90 (Gaspar's TKE mixed layer)
1469      - add horizontal diffusion of TKE, requires exchanges in
1470        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1471        default. In OPA there is no horizontal diffusion of TKE but the
1472        mixing coefficients are computed from a horizontal average of TKE of
1473        6 points or so. I think that diffusion has a little more physical
1474        justification.
1475      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1476        was in vain)
1477      - mask tke-variable in ggl90_init
1478    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1479    o fix biharmonic diffusion on CS-grid.
1480    o more obcs stuff
1481      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1482        for reading boundary values. This routine is called from
1483        obcs_prescribe_read
1484      - updated obcs_check
1485      - changed sponge layer relaxation parameter units for days to seconds
1486      - turned off sponge layer by default
1487      - changed argument list of OBCS_CALC to myTime+deltaTclock
1488      - fixed about 35 bugs in obcs_external_fields_load
1489    
1490    checkpoint55c_post
1491    o obcs stuff
1492      - new runtime flags useOBCSprescribe, useOBCSbalance
1493      - re-arranged obcs_calc
1494      - moved exf_getobcs to obcs_prescibe_read
1495        obcs_prescibe_read is called after ORLANSKI stuff
1496        and independent of it (executable can contain all).
1497      - updated obcs_check
1498      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1499        These may be necessary only if tangential velocities are
1500        prescribed at OB, not sure, needs testing.
1501    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1502      which simplifies the calls and passes the ifc check-bounds test
1503    
1504    checkpoint55b_post
1505    o add a 2D scalar, Z location, exchange_2 routine.
1506    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1507      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1508      affects advect_cs results (for the wrong reason): update output.txt
1509    o use a more standard discretization for biharmonic viscosity ;
1510     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1511      affects results of dome set-up: update output.txt
1512    o fix gad_advection.F (CubedSphere part), back to version 1.23
1513    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1514    
1515    checkpoint55a_post
1516    o merged code to
1517      * prescribe/read time-dependent open boundaries
1518        (works in conjunction with exf, cal)
1519      * sponge layer code for open boundaries
1520      * each boundary N/S/E/W now has its own CPP option
1521        (healthy for the adjoint)
1522    
1523    checkpoint55
1524    o up-to-date adjoint of previous breaks
1525      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1526      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1527      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1528      - carbon: * remove tr1-related adjoint verification
1529                * add ptracer as control variable
1530    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1531      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1532    
1533    checkpoint54f_post
1534    o in verification/carbin/ remove experiment related to
1535      ALLOW_PASSIVE_TRACER (array tr1 etc)
1536      code_ad/ input_ad/ results_ad
1537    
1538    o add two new packages
1539      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1540        + subject to optimization (memory)
1541      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1542        + subject to reordering (many GOTOs in the original code)
1543        + so far opps is called for every (i,j) point, and then operates in
1544          the vertical; one may want to reorder the scheme in order operate in
1545          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1546          fields)
1547    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1548      - all verification tests compile and run with linux_ia32_g77
1549      - defaults are compatible with current input files--nothing
1550        should change if you were not previously using MNC
1551      - MNC output has been added in numerous places (eg. timeave)
1552        but there are still a few writes not yet do-able with MNC
1553        (this is in progress)
1554      - flags now allow for either/or/both use of MDSIO and MNC and
1555        documentation will soon follow
1556      - numerous small formatting cleanups for ProTeX
1557    o add version info (via BUILD_INFO.h) to MNC and stdout
1558    
1559    checkpoint54e_post
1560    o add two new packages
1561      - pp81 (Packanowski and Philander, 1981), Richardson number and
1562        stratification dependent mixing
1563      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1564      - these scheme operate in a similar manner as KPP (without ghat, of
1565        course), however there is only one diffusivity that is used for both
1566        temperature and salinity (and passive tracers)ç
1567    o add offline package
1568    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1569      provided by Stephanie Dutkiewicz
1570    o genmake2: add ability to search for C compilers and cleanup test output
1571      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1572    
1573    checkpoint54d_post
1574    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1575    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1576      leading to additional shift by 5 days each year of integration
1577       (i.e. leading to considerable offset over the years)
1578    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1579    o start with no AB and no initial filtering (staggerTimeStep):
1580      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1581    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1582      (external loading & cpl import/export stay in forward_step.F)
1583    o update coupling interface to work with new staggerTimeStep
1584    o change MDSIO ptracers_pickup.
1585    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1586    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1587    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1588    
1589    checkpoint54c_post
1590    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1591      this affects (truncation error) output.txt of test-exp:
1592       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1593    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1594    o change Qnet to always be the net heat flux, (+upward).
1595      affects (truncation error) output of natl_box exp.: updated
1596    o define the max number of passive tracers in PTRACERS_SIZE.h
1597    o start to test mnc routinely in exp0
1598    o add sea-ice loading (sIceLoad) as a new forcing field.
1599    
1600    checkpoint54b_post
1601    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1602       impressive on Altix and Opteron systems)
1603    o diagnostics can now write NetCDF files through the mnc package
1604    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1605    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1606    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1607      affects (truncation error) output of lab_sea & natl_box exp.: updated
1608    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1609    
1610    checkpoint54a_post
1611    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1612    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1613    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1614    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1615      + internal_wave (shift in writing cg2d_ini_res)
1616    checkpoint54a_pre
1617    
1618    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1619      - modified verification/lab_sea and natl_box_adjoint accordingly
1620    
1621    checkpoint54
1622    checkpoint53g_post
1623    o prepare splitting of thermodynamics: store convect.counter in common block
1624    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1625      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1626    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1627    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1628    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1629    o restore adjointability
1630    
1631    checkpoint53f_post
1632    o modifications that affect AIM experiment results (update output.txt):
1633      - no advection of S at top interface Nr (pkg/generic_advdiff)
1634      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1635    o AIM pkg:
1636      - include stability function into surf.Flux derivative relative to Tsurf
1637      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1638    
1639    checkpoint53e_post
1640    o merged cylindrical coord configuration
1641    o added rotating_tank experiment
1642    checkpoint53e_pre
1643    
1644    checkpoint53d_post
1645    o faulks upgraded: re-generate output.txt that have changed:
1646       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1647    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1648    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1649    o added Sadourny discretization of Coriolis
1650      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1651      - re-enabled use of omega3 (useAbsVorticity)
1652    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1653      vector-invariant equations
1654      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1655    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1656      hopefully without new bugs
1657      - still to do: biharmonic friction for non-hydrostatic w
1658    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1659    o regenerated output for global_ocean_ebm (using -ieee)
1660    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1661      of mom_common/
1662      - simple re-arrangement of instructions within computing loop
1663    checkpoint53d_pre
1664    
1665    checkpoint53c_post
1666    o new version of coupler for AIM+thSIce and Ocean models
1667     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1668     - land: change Evaporation of snow
1669     - aim with thSIce: fix bug in snow-precip.
1670    o changes to calc_gw.F
1671     - bug fix for w^2 term near the bottom boundary
1672     - (hopefully) improve the lateral slip boundary condtions for use with
1673        partial/looped cells
1674      - because the bug fix changes two verification experiments anyway (exp5
1675        and plume on slope), change the lateral boundary condition from half slip
1676        to the value of no_slip_sides
1677    o ebm package wasnt quite up to the parallel task. Fixed that.
1678    o Adjoint of EBM package + verification
1679      * TLM OK
1680      * ADM not sufficient accuracy yet (needs further testing)
1681    
1682    checkpoint53b_post
1683    o Commiting new energy balance model to repository
1684      * package is pkg/ebm
1685      * verif. is verification/global_ocean_ebm
1686      * references are in ebm_driver.F
1687    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1688    C        Global thermohaline circulation. Part I:
1689    C        Sensitivity to atmospheric moisture transport.
1690    C        J. Climate 12(1), 71-82
1691    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1692    C        Global thermohaline circulation. Part II:
1693    C        Sensitivity with interactive transport.
1694    C        J. Climate 12(1), 83-91
1695    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1696    C        Destabilization of the thermohaline circulation
1697    C        by atmospheric eddy transports.
1698    C        J. Climate 7(12), 1870-1882
1699    o Will need long integration testing.
1700    checkpoint53b_pre
1701    
1702    o created pkg/mom_common in preparation for variable viscosity code
1703    o renamed and split ini_mnc_io
1704    o pkg/land: only liquid water can diffuse or run-off
1705    o AIM using land: soil wetness availability account for snow
1706    o added printMapIncludesZeros to EEPARMS namelist
1707    
1708    checkpoint53a_post
1709    o restore TAMC compatiility for exf_constants.h
1710      (no usage of _d in .h)
1711    o Additional storing in KPP in an attempt to fix
1712      TAMC problem with adjoint of KPP code.
1713      (no success...)
1714      Identical code works fine with TAF.
1715    o Fixed verification/natl_box_adjoint experiments.
1716      Initial conditions for Experiments 4 and 5 are now
1717      set to "SEAICE_initialHEFF=0", which is more reasonable,
1718      and hence gives results closer to that of Experiment 2.
1719      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1720    
1721    checkpoint53
1722    o stable checkpoint with up to date adjoint
1723      TLM tests only run for 1st grdchk at the moment. Its unclear if
1724      this is a code problem or a problem with resetting code for g_
1725      variables that is being autogenerated wrong.
1726      Otherwise:
1727       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1728       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1729         are both still in chaos following their security messes.
1730    
1731    checkpoint52n_post
1732    o various build (mostly genmake2) changes including:
1733      - ability to build/run more easily within Cygwin and MacOS X
1734      - more complicated Makefiles with a stronger dependence on Gnu Make
1735    o pkg/seaice modifications
1736      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1737        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1738        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1739      - changed proxy for geostrophic velocity and updated
1740        verification/lab_sea/results/* accordingly
1741      - removed ADI dynamic solver from pkg/seaice
1742      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1743        they caused a segmentation fault under certain circumstances
1744      - removed unused field WATR
1745    o bug fix in exf-package:
1746      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1747         now reflect that.
1748    o small fixes in the cal-package:
1749      - set reference date to first of January for the 'model'-calendar
1750      - failing of cal_CheckDate in cal_FullDate now actually results in a
1751        warning
1752    o small modifications in exf-package to increase flexibility:
1753      - change climtempfreeze from a constant to a runtime parameter that
1754        is specified in data.exf_clim (default = -1.9)
1755      - introduce runtime parameter windstressmax (default = 2.0) that is
1756        specified in data.exf
1757    o fix in pkg/thsice:
1758      - update Evap (Tsf changes) to be consistent with Latent heat flux
1759      - maintain snow precipitation unchanged (even if Tsf >=0).
1760     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1761    
1762    checkpoint52m_post
1763    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1764      this does not change any of the results, because myIter=0 in swfrac always
1765      lead to jwtype=2 (the default anyway), but the call makes little sense
1766      as a default
1767    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1768    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1769      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1770    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1771    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1772    o extending useSingleCpuIO option to work with new exch2 I/O format
1773      - old-style, missing-tile I/O is still accessible by defining CPP
1774        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1775    o monitor package can write to NetCDF files and/or STDOUT
1776    o fix re-definition bug in MNC_GRID_INIT_ALL()
1777    o doc/api_reference added
1778      - a framework for building an API Reference Manual using all
1779        the "protex" comments embedded in the code
1780      - see pkg/generic_advdiff, pkg/mnc for examples
1781    o MNC:
1782      - make myThid the last argument for all subroutines
1783      - new default for the grid files: NO halos
1784      - add useMNC and other run-time flags
1785      - separate per-file-group handling of the unlimited dimension
1786      - early initialization of MNC w/ flags read at the eeboot stage
1787        and lookup tables set in initialize_fixed
1788      - write all MNC output to a freshly-created directory
1789    o thermodynamics sea-ice (thsice) is now tested with testreport.
1790    o test exp. advect_cs: use the standard cs32 grid ; update output.
1791    o Added functionality to grdchk:
1792      pick global i,j,k position (or nearest wet) where to perform check.
1793    
1794    checkpoint52l_post
1795    o new land formulation:
1796      a) use ground enthalpy as prognostic variable to ensure exact
1797         energy conservation.
1798      b) account for water temperature and for latent heat of freezing
1799         in all processes (rain, run-off, ground storage)
1800      c) compute surface and ground temperature implicitly.
1801    o aim_v23 modification for new land model:
1802      a) Treat separately land / ocean / sea-ice surface fluxes
1803         to allow implicit computation of land & sea-ice surface temp.
1804      b) add snow precipitation.
1805    checkpoint52l_pre
1806    
1807    o fix problem (when 1 tile is empty) in min/max monitor.
1808    o fix bug in timeAve (u,vZetatave in common block)
1809    o no restoring terms under ice for pkg/seaice
1810    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1811    o bug fix for pkg/seaice pickups
1812    o change MNC call locations and add coordinate attributes
1813    o mask vorticity at the corner ; affects global_ocean.cs output
1814    o fix ini_curvilinear_grid ; test CS experiments with mpi
1815    o aim.5l_cs: modify sea-ice fraction input file ; update output
1816    o exf: Adding simple range check routine for exf fields after read
1817    
1818    checkpoint52k_post
1819    o removed top-level directory "diags"
1820      - we migrated these functions to pkg/timeave a long time ago
1821    o fixed bug introduced in pkg/monitor
1822    o accuracy ctrlprec = 32 insuffient for gradient checks using
1823      averaged fields (I/O via cost_averages)
1824      -> use ctrl.h in active_file*.F to control I/O precision.
1825    o paramter list of CALL ADTHE_MAIN_LOOP
1826    o added initial do_the_model_io to ecco
1827    o set all ...Freq to zero after cost_final
1828      taveFreq, dumpFreq, pChkptFreq
1829    o MAIN and ECCO differentiability restored
1830    
1831    checkpoint52j_post
1832    o fix nchklev in tamc.h for global_ocean...
1833    o Bringing flow and store directives up-to-date
1834    o Really weird thing!
1835      call do_the_model_io from the_main_loop with parameters
1836      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1837      TAF places a faulty re-call of initialise_varia
1838      after cost_final call which should not be there!
1839    checkpoint52j_pre
1840    
1841    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1842      error messages
1843    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1844    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1845      debug output
1846    o modfied mdsio_writefield.F to handle non-global files under exch2
1847    o update AIM Cubed-Sphere exp (aim.5l_cs):
1848      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1849    o update AIM Equatorial Channel exp:
1850      use standard aim_v23 pkg and change the SST fields to be more realistic.
1851    o globalFile now works with exch2
1852    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1853      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1854    o limit timeave output for hi-res integrations
1855    
1856    checkpoint52i_post
1857    o removed CPP_EEOPTIONS.h from verification/*/code
1858    o updated the tiling for global_ocean_pressure
1859    checkpoint52i_pre
1860    
1861    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1862      the old pkg/aim).
1863    
1864    checkpoint52h_pre
1865    o shortened offending lines in exch2_send_rx?.template
1866    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1867    o genmake2: add build & execute test for NetCDF code
1868    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1869      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1870    o added useSingleCPUIO flag to monitor.F and mon_out.F
1871    o added temporary hack for sea-ice dynamics on the cube:
1872      metric terms are ignored and it is assumed that
1873      there is no sea-ice on cube faces 1, 2, 4, and 5.
1874    
1875    checkpoint52f_post
1876    o added exch2 cube routines to pkg/exch2
1877    o modified hs94.cs-32x32x5 to use it
1878    o added new grid files to hs94.cs-32x32x5
1879    checkpoint52f_pre
1880    
1881    checkpoint52e_post
1882    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1883      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1884    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1885      to work with implicit vertical advection and AB ;
1886    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1887    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1888     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1889    checkpoint52e_pre
1890    
1891    o fix bug in impldiff when Nr=1 or Nr=2.
1892    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1893    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1894    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1895      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1896    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1897    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1898    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1899    
1900    checkpoint52d_post
1901    o re-tiled many expts to allow comparison in multi-processor mode
1902      - updated output accordingly
1903      - changed hs94.128x64x5 to use intial T from file rather than use the
1904        random number generator
1905    o add infrastructure in model routines for fizhi and gridalt packages
1906    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1907    o changes to permit hi-res, cubed-sphere, configuration
1908      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1909      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1910      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1911        of surface winds for the cube
1912      (A verification experiment, based on global_ocean.cs32x15, but with
1913       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1914       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1915       complete with example surface forcing files and matlab scripts to look
1916       at the output and compare it with that of global_ocean.cs32x15.)
1917    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1918       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1919       to conform to the common rule.
1920    o check-in the first version of the coupler + interfaces for multi-components
1921       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1922       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1923       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1924       - ocean and atmos. share the same horizontal grid (no interpolation).
1925       - exchanges between component and coupler is done in forward_step
1926    o new verification experiment, cpl_aim+ocn:
1927       coupled ocean - AIM atmosphere on cs32 grid.
1928    
1929    checkpoint52d_pre
1930    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1931    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1932    
1933    checkpoint52c_post
1934    o Fixing OPTIONS files for use of exf:
1935      - ALLOW_ECCO not needed
1936      - ECCO_CPPOPTIONS.h should not be included from
1937        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1938        as has been the case in the past
1939      - All cal/exf related options are currently set in
1940        single header file. Should remain so until we
1941        agree on a consistent new policy.
1942    o Removed all CPP options for cal package.
1943      cal has no more CPP options.
1944    o modified STOREs in GAD_ADVECTION
1945    o corrected key comp. for passkey
1946    
1947    checkpoint52b_post
1948    o new version: "thsice" of thermodynamic sea-ice pkg:
1949     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1950     - modify fluxes but do not change theta directly;
1951     - light cleaning of bulk_force pkg (still needed with thsice).
1952     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1953       + output_thsice.txt to test thsice & bulk_force pkgs.
1954    o put back grid & coriolis monitor output.
1955    checkpoint52b_pre
1956    
1957    o call "do_the_model_io" at the beginning (=> dump initial state)
1958    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1959    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1960      (need info on NUMBER_OF_PTRACERS)
1961    o missing PTRACERS headers in some routines
1962    o default tamc.h in pkg/autodiff supposed to crash
1963      to ensure proper customization
1964    
1965    checkpoint52a_post
1966    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1967      - moved surfaceTendencyTice from pkg/seaice to main code
1968      - subroutine FREEZE_SURFACE now limits only surface temperature
1969        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1970        => new output.txt for global_ocean.cs32x15 & global_with_exf
1971      - keep the old version of FREEZE for backward compatibility;
1972        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1973      - corresponding modifs for TAF directives
1974    o added surface flux output variables to TIMEAVE_STATVARS
1975    o time-averaged output for pkg/ptracers
1976    o fix problem with ECCO-related divided adjoint
1977      snapshot file was missing some ad-variables,
1978      but no warning issued by TAF
1979    
1980    checkpoint52a_pre
1981    o some bug fixes for #undef REAL4_IS_SLOW
1982    
1983    checkpoint52 = ecco_c52_e35
1984    o after testing adjoints of checkpoint51u_post
1985    
1986    checkpoint51u_post
1987    o this is the post-merge tag of the ecco-branch
1988      (needs another clean checkout and re-testing)
1989    o various natl_box_adjoint configs and results
1990      but no input fields
1991    o obcs adjoint not yet merged!
1992    o adding ECCO global 1x1 and 2x2 degree configs
1993    o updated/extended some store directives for seaice
1994    o pkg/ecco now containes ecco-specific part of cost function
1995    o top level routines the_main_loop, forward_step
1996      supersede those in model/src/
1997      previous input data.cost now in data.ecco
1998      (new namelist ecco_cost_nml)
1999    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2000    
2001    checkpoint51t_post
2002    o this is the pre-merge tag of the ecco-branch
2003    
2004    checkpoint51s_post
2005    o cleanup: removed various obsolete #define-s
2006    o pkg/grdchk
2007      - renamed 'ph-grd 3' to 'grad-res'
2008      - merged from ecco-branch
2009        (remaining bug fixes for obcs gradient checks)
2010      - additional high-precision output for testreport
2011        (grep for 'precision_grdchk_result')
2012    
2013    checkpoint51r_post
2014    o cleaned up or removed CPP_OPTIONS.h files
2015    o updated results for some of the tests to reflect the new
2016      optfiles (-ieee: -O0 instead of -O3)
2017    
2018    checkpoint51q_post
2019    o cd_code:
2020      - moved cd_scheme.F -> cd_code_scheme.F
2021      - separate read_checkpoint from cd_code_ini_vars.F
2022      - separated cd_code part from write_checkpoint
2023      - updated AD_SOURCE, generated .flow
2024      - added CD_CODE_VARS.h to the_main_loop
2025      - Moving cd_code specific store dir.s to pkg/cd_code
2026    o ctrl package totally restructured
2027      - pack/unpack now optional and decoupled from
2028        xx_/adxx_ I/O
2029      - ctrl_pack/unpack cleaned
2030        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2031      - confined inclusion of AD_CONFIG.h to where necessary.
2032    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2033    
2034    checkpoint51p_post
2035    o create initial cd_code package
2036      - WARNING: the initialization of fields within packages
2037        is broken because INI_FIELDS (where READ_CHECKPOINT is
2038        called) is called *before* PACKAGES_INIT_VARIABLES.
2039        This seems to be backwards since
2040        1) its important to initially zero the entire field including
2041           the "halo" region
2042        2) zeroing needs to be done *before* reading pickup info
2043           and the pickup call might or might not happen in any
2044           particular run
2045      - this needs an overhaul for R2
2046    o cleanup verification/*/code/GMREDI_OPTIONS.h
2047    o cleanup testreport
2048    
2049    checkpoint51o_post
2050    o bringing AD-related verif's up to date with genmake2
2051      - carbon/
2052      - global_ocean.90x40x15/
2053      - hs.94.1x64x5/
2054      - (front_relax/ )
2055    o (more) consistent directory structure for AD-related verif.'s
2056    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2057    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2058    o bug fix in find_alpha.F for MDJWF:
2059      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2060        change rho -> rho-rhoConst
2061      - replace call find_rho to find_rhonum
2062    o initialisation of rFlx extended to full array (required by TAF)
2063      and shifted to thermodynamics
2064    o removed PTRACERS.h in ptracers routine
2065    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2066    o Correcting initialisations for fVerU, fVerV.
2067    o helping TAF to recognize dependency on kUp for
2068      fVerU, fVerV
2069    o Replacing delZ by delR in pkg/ctrl/
2070    checkpoint51o_pre
2071    
2072    o undid all of cp51 pending some cleanups and discussion
2073    o added the [#include "AD_CONFIG.h"] statement to all files that need
2074       it for adjoint/tl #defines
2075     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2076     o removed tools/genmake since it no longer works
2077    
2078    checkpoint51n_post
2079    o modifications to make FREEZE flux visible to pkg/kpp
2080      - moved surfaceTendencyTice from pkg/seaice to main code
2081      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2082      - subroutine FREEZE now limits only surface temperature
2083        (this means new output.txt for global_ocean.90x40x15,
2084         global_ocean.cs32x15, and global_with_exf)
2085    o added surface flux output variables to TIMEAVE_STATVARS
2086    
2087    checkpoint51n_pre
2088    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2089    o added [#include "AD_CONFIG.h"] to all files that use the following
2090      defines:
2091      - ALLOW_ADJOINT_RUN
2092      - ALLOW_TANGENTLINEAR_RUN
2093      - ALLOW_ECCO_OPTIMIZATION
2094    
2095    checkpoint51m_post
2096    o incorporating changes to get TAMC/TAF working in genmake2
2097      - added new TAMC/TAF targets to the Makefile
2098      - various cleanups related to package handling
2099      - these changes should have no impact on the forward model
2100    
2101    checkpoint51l_post
2102    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2103     - faster algorithm for cal_addtime.F
2104     - higher precision arithmetic, where needed
2105     - pkg/exf *startdate variables changed from calendar date to
2106       model integration time
2107    
2108    checkpoint51l_pre
2109    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2110    o enable to apply restoring on S & T only in a latitude band.
2111    o update output (external_forcing_surf modif. change truncation errors)
2112       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2113    
2114    checkpoint51k_post
2115    o change default to: useNHMTerms=.FALSE.
2116     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2117       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2118     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2119        exp1, ideal_2D_oce
2120     - change data file of oceanic exp (leave the results unchanged for now)
2121       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2122    o set gravitySign automatically according to the vertical coordinate used
2123      (and change sign: back to "logical" value: +1 when R increases downward)
2124    o added an include barrier to the default CPP_OPTIONS.h and
2125      removed the #include "PACKAGES_CONFIG.h" from it
2126    o fix a bug in mom_fluxform (from chk51j_post)
2127    
2128    checkpoint51j_post
2129    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2130    o adjusted some flow directives (dynamics, thermodynamics)
2131    o added cubed-sphere case to test cost function
2132    o heckpoint_lev?_directives.h now include
2133      pkg-specific directives, whenever those are enabled.
2134    o Moving pkg-specific flow directives to corresponding pkg
2135      Moving pkg-specific differentiation list to corresponding pkg
2136      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2137      ---> conventions are
2138           - pkg_ad.flow
2139           - pkg_ad_diff.list
2140           - pkg_ad_check_lev?_dir.h
2141    
2142    checkpoint51i_post
2143    o merge of the branch-genmake2
2144      - knowingly breaks the older genmake
2145      - automatic generation of all ALLOW_${PKG_NAME} defines
2146      - new testreport supersedes older testscript
2147    o large number of package inclusion and header cleanups
2148    checkpoint51i_pre
2149    
2150    o new output for adjoin of global ocean vector invariant
2151    o fix for checkpoint of thermodynamic seaice and bulk_force
2152    o Steph gchem various cleanups
2153    
2154    checkpoint 51h_pre
2155    o fixed some single quotes
2156    o modify gchem pkg to be more versatile
2157    o modifications to clean up dic pkg
2158    o add pkg/cfc
2159    
2160    checkpoint51g_post
2161    o provide links for ARPACK and ADM*TLM
2162    o start removing verification/vero/
2163    o update AD-related stuff
2164      (in particular some IF-statements in model/src/ routines)
2165    o adding to verification/global_ocean.90x40x15/ adjoint of
2166      vector invariant setup
2167    
2168    checkpoint51f_post
2169    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2170    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2171      of tracer Green's fucntions for ocean inversion project.
2172    
2173    checkpoint51f_pre
2174    o Added on-the-fly spatial interpolation capability
2175        "USE_EXF_INTERPOLATION" to pkg/exf.
2176      - This is a temporary Cartesian-grid hack until
2177        the super-duper ESMF coupler becomes available.
2178      - See verification/global_with_exf/README for usage example.
2179      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2180        flags and modified pkg/seaice accordingly.
2181    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2182        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2183        non-local transport term.
2184    
2185    checkpoint51e_post
2186    o pkg/mom_vecinv:
2187      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2188      - add time-ave diagnostic of vorticity advection.
2189    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2190    o atmospheric geopotential: - include water vapor effect;
2191                                - use p^kappa in p* scaling.
2192    o land pkg: read initial state from files.
2193    o AIM : add stratospheric drag in the upper level
2194    
2195    checkpoint51d_post
2196    o change function ILNBLNK (=> last non-blank char.) to return zero
2197      (instead of the string length) when the string. char is empty
2198    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2199    o modif's to restore TAMC compatibility
2200      - avoid "_d" constructs in PARAMETER declarations
2201      - avoid interrupting lines by comment lines
2202    o Use cluster local disks for purely local I/O
2203      vs. globally visible disks needed for ctrl stuff
2204      (merged from ecco-branch)
2205      - new active_file_loc... and mdsio_..._loc routines
2206      - affected packages: autodiff, ctrl, grdchk, mdsio
2207    
2208    checkpoint51c_post
2209    o introducing integer flag debugLevel
2210      - debLevZero: suppress all output
2211      - debLevA: standard
2212      - debLevB: equivalent to current debugMode=.TRUE.
2213    o introducing pathname variable mdsioLocalDir for mdsio
2214      that can be specified at runtime
2215      (relevant for cluster I/O to local disk)
2216    `
2217    >>>checkpoint51b_post
2218    adjoint of ptracers
2219    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2220    o extended state in checkpoint_lev?, etc.
2221    o alternative ctrl/cost with tr1 or ptracer
2222    o new comlev1_bibj_ptracers
2223    o new ptracers.flow
2224    o made ptracers_forcing same as external_forcing_s
2225    o added verification for adjoint with ptracers
2226      - adm. grdchk fail so far
2227      - tlm. grdchk OK
2228      - checked tapelev/comlev recomputations: OK
2229    <<<checkpoint51b_pre
2230    
2231    checkpoint51a_post
2232    o added code for biogeochemistry package
2233      - new pkgs: dic, gchem
2234      - new subroutine in ptracers
2235    o modify code for biogeo packages
2236      - in model/src and pkg/ptracers
2237    
2238    checkpoint51
2239    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2240      - autodiff, ctrl, exf, grdchk, seaice
2241      kept separate packages
2242      - cost, ecco, obcs
2243    o updating verification/internal_wave, verification/lab_sea
2244      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2245    
2246    checkpoint50i_post
2247    o Preparing next differentiable checkpoint and sync
2248      of MAIN vs. ecco-branch
2249      - 1st step: this one is differentiable
2250      - 2nd step: next(! not this) checkpoint will have updated packages
2251                  from ecco-branch)
2252    
2253    checkpoint50h_post
2254    o new package "land": provide surface BC for AIM.
2255    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2256    o AIM: use true log-P extrapolation for near surface temp (= as in
2257        F.Molteni paper) ; update aim.5l_cs output.
2258    o New variable in PARM03 for more flexible pickups
2259    o somewhat cleaned package initialisation sequence for
2260      ctrl/ cost/ ecco/ in packages_... routines
2261    
2262    checkpoint50g_post
2263    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2264      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2265      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2266        made the default because of faster convergence than ADI
2267    
2268    checkpoint50f_post
2269    o exf totally restructured
2270      - replaced all exf_set_ routines by one generic exf_set_gen.F
2271        and made sure it's still differentiable
2272      - split exf_getffields.F into new exf_bulkformulae.F
2273      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2274      - updated adjoint/makefile and relevant verif. accordingly
2275    
2276    checkpoint50f_pre
2277     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2278          + change Evap over land. (update aim.5l_cs output)
2279     o added missing .cvsignores and made uniform across expts
2280     o changed configuration of tidal_basin_2d expt
2281     o added pkg/debug functions for tracing code in fatal crashes
2282     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2283     o new fn in pkg/monitor to stop model if solution grows too big
2284     o removed lots of single quotes from comments
2285    
2286    checkpoint50e_post
2287    o make KPP work with PTRACERS
2288     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2289       nearly a copy of kpp_transport_s
2290     - there is no analogue to SurfaceTendencyS, so I have to use
2291       gPtr(of the surface layer) instead
2292    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2293    checkpoint50e_pre
2294    
2295    checkpoint50d_post
2296    o change kpp output from multiple-record state files to single-record state
2297      files analogous to write_state.F
2298    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2299      analogous to the cg2d-related output.
2300    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2301      so that writing to internal file fn (with length 512) fails.
2302    checkpoint50d_pre
2303    
2304    checkpoint50c_post
2305    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2306    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2307    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2308    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2309    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2310    
2311    checkpoint50c_pre
2312    Merging from release1_p13:
2313    o bug fix for pkg/seaice dynamic solver
2314    o Added SEAICE_initialHEFF to pkg/seaice
2315    
2316    checkpoint50b_post
2317    o store u*,v* in gU,V instead of in guNm1,gvNm1
2318    o in order to put the momForcing out of the Adams-Bashforth:
2319      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2320      to timestep.F
2321    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2322    o re-generate output for highly sensitive test-exp:
2323       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2324    
2325    checkpoint50b_pre
2326    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2327    o corrected CPP option mismatch in exf_Bulk... functions for case
2328      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2329    
2330    checkpoint50a_post
2331    o Bug fix for merging between c50 and KPP.
2332      ikey was passed from thermodynamics to kpp_calc via
2333      common block rather than being recomputed in kpp_calc,
2334      in contradiction with new key itdkey.
2335      New key ikppkey created, and tamc.h headers updated.
2336    
2337    checkpoint50
2338    - 2nd step of merge with ecco-branch:
2339      merge changes in ecco-branch back into main trunk
2340    - bug fix in find_alpha
2341    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2342    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2343    - merged some sliced AD support routines
2344    
2345    checkpoint49
2346    merged from ecco-branch:
2347    o exf:
2348      - Enable initialisation of forcing fields to constant
2349        (runtime) values.
2350      - in exf_getffields.F
2351        Reduce i-/j-loop to interior domain, discarding overlaps.
2352        That also fixes wrong TAF-key computations for key_1, key_2
2353        with bulf formulae.
2354      - exf_init.F modify #ifdef for exf_init_evap
2355      - exf_getffieldrec.F, ctrl_getrec.F
2356        The following INT-usages are not safe:
2357          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2358          fldcount = int(fldsecs/fldperiod) + 1
2359        and were modified.
2360    o autodiff: checkpoint_lev...
2361      - updated storing for bulk formulae (some arrays were missing)
2362      - added state for seaice package
2363      - synchronized with main branch
2364    o DIVA:
2365      Modif.s in
2366      - the_main_loop.F
2367      - the_model_main.F
2368      and added cost_final_restore.F cost_final_store.F
2369      o With these changes, it is possible to fully separate
2370        the first forward run to compute the cost function (mdthe_main_loop)
2371        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2372        into separate model executions.
2373        This enables better tuning of DIVA to given queue sizes.
2374      o Loss of cost function value in consecutive DIVA runs is
2375        fixed by storing to 'costfinal' file.
2376      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2377        beginning/end of adjoint integration is accounted for.
2378      The current changes apply to TAF-1.4.26.
2379      TAF has one remaining bug, requiring one manual change
2380      (see MITgcm manual).
2381    o cal: synchronized between MAIN and ecco-branch
2382    
2383    checkpoint48i_post
2384    o Changes to restore differentiability of code w.r.t. previous tag
2385      (mostly adding new routines to make list and replacing
2386      pressure by totPhiHyd).
2387    o Updated and merged grdchk package
2388      - has both ADM and TLM checks
2389      - works for single- and multi-proc.
2390      - output cleaned
2391      - worked successfully for parallel DIVA
2392    o genmake:
2393      - Adding -platform=SP4
2394      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2395    o Modif. for DIVA:
2396      ctrl_unpack should not be called in intermediate DIVA interval.
2397      (similar thing would apply for active files such as
2398      tbar, sbar, psbar, which should not be reinitialised;
2399      only relevant for ecco-branch)
2400    
2401    checkpoint48h_post
2402    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2403    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2404    o Added SEAICE_initialHEFF to pkg/seaice
2405    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2406    
2407    checkpoint48g_post
2408    --- EOS:
2409    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2410      store total Potential in totPhyHyd for diagnostics & EOS.
2411    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2412    --- Pressure/geopotential gradient:
2413    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2414    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2415      ( changes results of global_ocean_pressure )
2416    o NLFS + z-coord.: add eta*Rho' contribution.
2417    o accurate phiHyd when using interface-W at the middle between 2 centers
2418     ( changes results of ideal_2D_oce )
2419    o includes r* 2nd term in potential gradient.
2420    
2421    checkpoint48f_post
2422    Merging from release1_p12:
2423    o Modifications for using pkg/exf with pkg/seaice
2424      - improved description of the various forcing configurations
2425      - added basic radiation bulk formulae to pkg/exf
2426      - units/sign fix for evap computation in exf_getffields.F
2427      - updated verification/global_with_exf/results/output.txt
2428    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2429      (SBO) core products, including oceanic mass, center-of-mass,
2430      angular, and bottom pressure (see pkg/sbo/README.sbo).
2431    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2432      to avoid negative values in shallow regions.
2433      - updated verification/natl_box/results/output.txt
2434      - updated verification/lab_sea/results/output.txt
2435    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2436    o Added useSingleCpuIO option (see PARAMS.h).
2437    o Updated useSingleCpuIO option in mdsio_writefield.F to
2438      work with multi-field files, e.g., for single-file pickup.
2439    o pkg/seaice:
2440      - bug fix in growth.F: QNET for no shortwave case
2441      - added HeffFile for specifying initial sea-ice thickness
2442      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2443    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2444      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2445    o pkg/seaice:
2446      - adjoint-friendly modifications
2447      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2448    
2449    checkpoint48e_post
2450    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2451    o dynamics: change definition of computational domain & adapt mom_fluxform
2452      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2453    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2454        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2455        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2456        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2457        inverted_barometer solid-body.cs-32x32x1
2458      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2459    
2460    checkpoint48d_post
2461    o in preparation for r*:
2462     a) use pre-computed gradient of hydrostatic potential:
2463        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2464     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2465        => affects results of glob_oce_pressure (different truncation error)  
2466      update output.txt of ideal_2D_oce & global_ocean_pressure
2467    
2468    checkpoint48d_pre
2469    o in preparation for r*:
2470      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2471      pass the 2 comp. of the grad. as arguments to momentum S/R.
2472      but for the moment, only used if it does not change the results.
2473    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2474    
2475    checkpoint48c_post
2476    Modifications in treatment of initial flux forcing controls
2477    to avoid extra storing of flux fields.
2478    
2479    checkpoint48c_pre
2480    o Added tidal_basin_2d experiment (currently 1D!)
2481    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2482    
2483    checkpoint48b_post
2484    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2485     (modification to pressure gradient not yet implemented)
2486    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2487      (for U & V) that are used for vertical advection of momentum.
2488    
2489    checkpoint48a_post
2490    o In preparation for r*, use temp. array to compute vertical transport
2491       in flux-form momentum pkg. => change results of few test-exp.
2492      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2493                        lab_sea, natl_box & plume_on_slope
2494    
2495    checkpoint48
2496    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2497    
2498  checkpoint47j_post  checkpoint47j_post
2499  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2500  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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