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revision 1.287 by dimitri, Wed May 5 00:23:37 2004 UTC revision 1.817 by mlosch, Tue May 15 14:34:44 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8      - get rid of three more exchanges seaice_calc_viscosities (required
9        different loop boundaries in seaice_lsr and seaice_ocean_stress)
10      - bug fix in seaice_ocean_stress (update of lab_sea required)
11      - reduce loop boundaries to necessary minimum also in seaice_evp
12      - go back to the old way of computing deltaC/Z as the adjoint likes that
13        better
14    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
15      passive tracer to an Age Tracer) + update output.txt
16    o pkg/exf:
17      - implement A-grid / C-grid selection for wind-stress input files.
18      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
19      for now, in exf_bulk_largeyeager04.F only :
20      - change implementation for case where windspeed + 2. components wind-stress
21        are read-in. AND use rhoConstFresh to convert evap.
22    o pkg/seaice:
23      - use correct EXCH_UV for wind-forcing (on A-grid).
24      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
25        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
26    o pkg/exf:
27      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
28      EXF_INTERPOLATION:
29      - merge global_with_exf/code version of exf_interp_read.F
30        to the main code ;
31      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
32        reading the file ; Important: This options needs to be defined to recover
33        previous code.
34        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
35      - no longer loose real*8 precision along the way when using exf_iprec=64.
36    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
37      - change discretisation of evp-solver in order to avoid another exchange
38        (changes lab_sea) and clean up a little
39      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
40        help the adjoint (this also changes the results slightly)
41      - add a few "_d 0" where they had been missing in seaice_evp.F
42      - cleaning up: remove unused seaice_calc_rhs.F
43    o pkg/exf: some cleaning-up:
44      - change various "constants" into runtime parameters
45      - cleaned-up Large&Yeager04 routine which should eventually
46        replace exf_bulkformulae.F (changed names of S/R and CPP)
47        and merged various ALLOW_ATM_WIND options
48     only used with thsice pkg (in thsice_get_exf.F):
49      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
50        which are used when useStabilityFct_overIce=TRUE (= the default)
51      - change default values of ice & snow emissivity and scale downward LW
52        by ice & snow emissivity.
53    o pkg/thsice:
54     fix few little problems, in thsice_calc_thickn.F:
55      - growth vertically (and not laterally) if iceFrac == iceMaskMax
56      - melt laterally only if hIce < hThinIce (as the comments say)
57      and in thsice_extend.F:
58      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
59      - start to form ice as soon as the minimum ice-volume is reachable.
60     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
61      and cpl_aim+ocn
62    o pkg/kpp
63     - move computation of surface related input fields to KPP into a new
64       subroutine kpp_forcing_surf.F
65     - remove wrong (within bi,bj loops) EXCH calls.
66     - little cleaning (add argument myThid in last position, cvs header ...)
67     - for now, fix conservation problem by exchanging KPPviscAz (may not
68       be the best fix)
69    o pkg/seaice
70     - check for inconsistent evp parameter/cpp-flag combination
71     - remove leftover errIO flat for obsolete name list error handling
72    o OpenAD
73     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
74    
75    checkpoint59a
76    o pkg/seaice: some parameter clarifications and a little bit of clean up
77    o pkg/thsice: rename run-time parameters:
78       himin       -> hIceMin
79       himin0      -> hThinIce
80       hihig       -> hThickIce
81       i0          -> i0swFrac
82       transCoef   -> bMeltCoef
83       frac_energy -> fracMelting
84      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
85       with default values (for now) that do not change the results.
86      remove old version of thsice vars advection in pkg/seaice.
87    o in FFIELDS.h:
88      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
89      - make pLoad & sIceLoad always available (but still only used if
90         ATMOSPHERIC_LOADING is #define).
91    o pkg/kpp: replaced _KPP_RL with _RL
92    o bug fixes for vertical diffusivity computations when both KPP and
93        3D diffusivity arrays are used.
94    o pkg/seaice: fix bug in evp solver, while doing that
95      - change (improve?) discretization of stress computations for both
96        cgrid-lsr and evp solver
97      - add a new routine to compute strain rates
98      - the above changes lab_sea results
99      - add no slip conditions for evp solver (off by default), lsr-version
100        may follow
101      - fix exchange for shear at Z-points (does not change lab_sea)
102      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
103        (to force the user to pick a time step since there is not "safe" way
104        of choosing it)
105      - add principal stress diagnostics
106      - rearrange fields for evp a little to avoid having to call a: too many
107        exchanges and b: exchanges for stress trensor components which we do
108        not have.
109      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
110        of evp, complete rewrite for lsr case (latter is does not yet work
111        in all cases)
112    o pkg/kpp: add code to have mixing in shelf ice caverns
113      - add myThid to all kpp routines (long overdue)
114    
115    checkpoint59
116    o pkg/exf:
117      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
118        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
119      - move exf header files from lower_case.h to UPPER_CASE.h ;
120        add missing cvs Header & Name
121      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
122      - add namelist param. selectStressGridPosition, exf_monFreq
123      - retire many _CLIM routines, and remove data.exf_clim
124        + params moved to data.exf
125        + climsst, climsss now handled by exf_set_gen, i.e.
126          climss?period=0 refers to constant field,
127          climss?period=-12 to monthly forcing
128      - split up namelists in data.exf
129    o pkg/seaice:
130      - remove seaice_exch and seaice_exch_uv
131      - remove superfluous exchange of theta
132      - add myThid to seaice_budget_ocean/ice
133      - add new interface for atmospheric wind forcing (C-grid only)
134        + new routine
135        + two new field (taux, tauy for stress over ice)
136        + removed one global field (DAIRN) for C-grid case only
137    o pkg/thsise
138      - 2nd set of modifs for thsice adjoint in conjunction with exf
139    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
140    
141    checkpoint58y_post
142    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
143      vertical diffusivity, similar to that in MOM4; turned on using
144      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
145      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
146    o Added capability for 3D specification of background vertical diffusion
147      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
148      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
149      "data" file that contains the 3D vertical diffusivity coefficients.
150    o ice dynamics (pkg/seaice) with thsice thermodynamics:
151      - add code within pkg thsice to advect & diffuse sea-ice fields
152      similar to (and will replace) what has been added in  seaice_advdiff.F,
153      but: - conserving Mass, Heat & Salt.
154           - better when using non-linear advection scheme (not yet fully tested)
155           - can also be used in atmospheric set-up (for now, only the diffusion).
156    
157    checkpoint58x_post
158    o IO option for global-file compact format:
159      - add options when generating topology (utils/exch2/matlab-topology-generator)
160      - add I/O capability (pkg/mdsio).
161      - adapt utils/matlab/rdmds.m to read this format.
162      for now long-line format not yet supported by pkg/mdsio (& exch2).
163    o shelfice: add a few diagnostics
164    
165    checkpoint58w_post
166    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
167      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
168      (and replace horiVertRatio in NH code).
169      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
170                         and tutorial_plume_on_slope (sensitive to truncation)
171    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
172      directly to drive seaice model (C-grid only)
173    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
174     - reintroduce computation of wind from stress,
175     - compute tau (in exf_bulkformulae.F) from windstress averaged to
176       mass points to avoid tau = 0
177     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
178    o rdmnc.m: make it work with "global" files created with gluemnc
179    o rdmnc.m : some improvements in dealing with singleton dimension
180      (tested on all testreport mnc output files).
181    o genmake2: disable pkg/profiles if netcdf test fails.
182    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
183    o move call to cal_readparms up to make calendar parameters/variable available
184      to all packages
185    
186    checkpoint58v_post
187    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
188      useDynP_inEos_Zc tested.
189    o pkg/exf: changes to properly interpolate/mask/scale initial fields
190    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
191      and portions thereof.  See read_cs.txt for description and examples.
192    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
193      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
194      following the great-circle arc between those 2 points.
195    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
196      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
197    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
198     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
199     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
200     - still needs work (not working with some options ; efficiency to improve)
201       and serious testing.
202     - use this scheme for temperature & salinity in 2 advection test exp.:
203       advect_xy & advect_xz, respectively.
204    
205    checkpoint58u_post
206    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
207    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
208    o testreport: add option "-skipdir" to skip some test.
209    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
210      momentum calculation.
211    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
212    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
213      remove checkpoint.F and the_correction_step.F (no longer used);
214      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
215    o add option (linFSConserveTr) to correct for tracer source/sink due to
216      Linear Free surface
217    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
218    o pkg/thsice: fix reading mnc-pickups
219    
220    checkpoint58t_post
221    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
222    o pkg/mdsio:
223     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
224       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
225       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
226     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
227     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
228       either MDS_READ_FIELD or MDS_WRITE_FIELD )
229     - new S/R (to replace MDSWRITEMETA), which allows to write more
230       informations (variable names, time ...) to meta files.
231     - modify rdmds.m to give back the meta file content.
232    o pkg/diagnostics: change vertical interpolation to be safer, and more
233       flexible (define p-levels to interpolate to in data.diagnostics);
234      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
235       diagnostic pointer.
236    o pkg/seaice: more cleaning up of seaice_growth, added many comments
237    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
238    o fix multi-category seaice:
239     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
240       SEAICE_MULTICATEGORY
241     - fix short wave heat flux
242    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
243       and allow to use EVP solver. Change forward lab_sea: test both EVP
244       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
245    o Initial check-in of lab_sea adjoint
246      (very similar to natl_box_adjoint/code_seaice)
247      * used C-grid and EVP solver
248      * used KPP, GM/Redi
249      * uses inAdExact=.TRUE.
250      * gradient checks fail for both ADM and TLM
251        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
252        f.d. gradients actually seem more problematic than ADM, TLM gradients;
253        issue is related to forward mismatch between g77 an ifort
254    o pkg/seaice: overhaul of thermodynamics
255     - growth.F and groatb.F are replaced by new routine seaice_growth.F
256     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
257     - move a few global fields out of SEAICE.h into seaice_growth.F and
258       make them 2D (FICE/QNETO/ ...)
259     - remove FO (it is the same as QNETO)
260     - introduce a few local fields to avoid modifying external fields such
261       as atemp, etc.
262    
263    checkpoint58s_post
264    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
265      changed exf_set_gen.F so that
266        genperiod=0 means input file is one time-constant field and
267        genperiod=-12 means input file contains 12 monthly means
268    o CG2D: use pre-computed solver main-diagonal (stored in common block);
269      this affects truncation error ; generate new output file for exp. which
270      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
271        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
272        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
273        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
274        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
275        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
276    o start implementation of deep-atmosphere and anelastic formulation
277    o verification: remove 2nd copy of input files and use script "prepare_run"
278      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
279    o mom_common/vecinv/fluxform: fix a few initialisation isssues
280    o profiles: fix for multithreaded case
281    
282    o diagnostics: rename few diags:
283      s/'PRESSURE'/'RCENTER '/g
284      s/'TICE    '/'oceFreez'/g
285      s/'TAUX    '/'oceTAUX '/g
286      s/'TAUY    '/'oceTAUY '/g
287      s/'SWFLUX  '/'oceQsw  '/g
288      s/DIFx/DFxE/g
289      s/DIFy/DFyE/g
290      and add few ocean-forcing diagnostics:
291      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
292    o modifications to pkg/seaice/growth.F and budget.F, which change results of
293      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
294      as actual snow thickness.  It now refers everywhere to effective snow
295      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
296    
297    checkpoint58r_post
298    o modifications to pkg/seaice/growth.F, which change results of
299      lab_sea experiment: fixes pertain to melting snow over open water, to
300      masking EVAP under sea ice, and to using the correct AREA variable for
301      computations of EVAP, PRECIP, HSNOW, and GHEFF
302    o add ability to read bathy, salt, and theta using MNC (off by def)
303    o add flooding algorithm and advection of HSNOW for pkg/seaice;
304      both are turned off by default and do no change any results
305    o seaice advection with pkg/thsice: a step toward the use of non-linear
306      advection scheme, but #ifdef or commented out for now (requires more EXCH).
307    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
308      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
309      in natl_box (affects results @ truncation level: update output.txt)
310    o multi-threading and IO:
311      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
312      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
313        (needed to work with SingleCpuIO): tested in all verif. exp.
314    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
315      affects the results (but none of the verification test uses this scheme).
316    o Adding some pkg/diagnostics capability to pkg/seaice
317      (will certainly be subject to changes)
318    o ctrl: adding new control variables:
319      lwflux, lwdown, evap, snowprecip, apressure, runoff
320    
321    checkpoint58q_post
322    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
323      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
324      high_res_cube configuration by 4% on Columbia.
325    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
326      add (in global_with_exf/code) a version of EXF_INTERP_READ without
327      dynamical allocation (seems to work in multi-threaded).
328    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
329      single CPU io) so that TAF does not have to see EESUPPORT.h
330    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
331    
332    checkpoint58p_post
333    o obcs: stop if obcs is used with useCDscheme = .true.
334    o shelfice:
335     - fix a sign error so that no slip at shelfice interface works
336     - remove stop for combination non-hydrostatic code and shelfice. That does
337       not mean, that the results are correct, but at least they are numerically
338       stable
339    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
340    o added adjoint exch routined for all exch*3d* routines
341      and updated flow directives
342    
343    checkpoint58o_post
344    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
345      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
346    o change controling S/R for writing pickup file (new S/R do_write_pickup)
347      and clean-up reading/writing of pickup files.
348    o fix local version of read/write pickup (NH part) in rotating_tank/code
349    o simplify EXCH interface:
350     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
351     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
352    o added the regrid package
353    o shelfice:
354     - add a simple boundary layer scheme to reduce noise
355     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
356    
357    checkpoint58n_post
358    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
359       local variable (not in common block).
360    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
361      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
362      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
363        to work with SingleCpuIO.
364    o add "_d 0" to real constant of pkg/cfc subroutines ;
365       update exp. cfc_exemple & tutorial_cfc_offline output files.
366    o multi-threading and IO:
367      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
368        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
369      - barrier before and after reading.
370      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
371      - avoid using MDS_WRITELOCAL for LAND pkg output.
372      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
373        common-block variables ; Allows multi-threading with master-thread IO.
374    o change default MAX_NO_THREADS from 32 to 4 ;
375      and stop cleanly when MAX_NO_THREADS is too small.
376    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
377    
378    checkpoint58m_post
379    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
380       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
381    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
382       keep global_ocean.90x40x15 (for AD testing) with former secondary test
383       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
384    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
385        add MITgcm_tutorials (= code + all the tutorials)
386    o ecco, option to compute cost for total ssh (mean+anom)
387    o consistent with addition of ptracer and ssh in pkg/profiles
388    o profiles: adding ptracer and ssh
389    o testreport: change multi-test output-file name
390      (from output.txt.{name} to output.{name}.txt)
391    o profiles: now ok for mutli-tiles case
392    o seaice: add 4 parameters for different advection schemes for area,
393      (effective) seaice thickness, enthalphy, and snow height. Their default
394      is the standard parameter SEAICEadvScheme
395    o calc_gw:
396     - add cosFacU in zonal viscous flux (harmonic.visc.).
397     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
398       of tutorial_plume_on_slope.
399    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
400    o calc_gw: true flux-form, account for horizontal grid spacing.
401      update rotating_tank results, but not plume_on_slope (affected at
402      truncation level, 11 digits).
403    
404    checkpoint58l_post
405    o calc_gw:
406     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
407     - remove side-drag for now (need to fix it); update plume_on_slope results.
408     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
409    o commit code to make SST/SSS weights spatially variable
410      (based on either variable in-situ or variable initial T/S weights)
411    o pkg/ecco:
412      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
413        now based on horizontally varying weights wthetaLev, wsaltLev
414      * cost_averagesflags now returns year indices in addition to day, month
415      * sflux balance is performed on annual basis
416        (sflxumm, sfluxmm2, bal_sfluxmm)
417      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
418        including separate counting and multipliers
419    o pkg/rbcs
420      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
421    
422    checkpoint58k_post
423    o testreport:
424     - always build in dir. "build" (if not there, mkdir build instead of building
425       & running in input)
426     - run in dir run (if it exists), in build otherwise.
427     - call prepare_run (if input/prepare_run exists)
428     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
429    o pkg/exf modifications to interpolation and rotation routines for more
430       reasonable treatment of North Pole singularity: for tracers North Pole
431       value is set to northernmost zonal-mean value, for zonal velocity it is
432       set to zero, and for meridional velocity it is set to northernmost value.
433    o pkg/exf/exf_check_range.F
434     - add tile index to diagnostics and move stop statement to the very
435       end of the routine.
436    o pkg/diagnostics: (diagnostics_main_init.F)
437      define title of isomorphic variables according to the current config.
438    o pkg/thsice with pkg/seaice dynamics:
439    - fix domain of computation (interior only, required for exf) and do exchanges
440    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
441    o towards a standard way of dealing with multi-threading in MONITOR
442      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
443    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
444       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
445    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
446    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
447    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
448       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
449    o tracer advection:
450     - clean-up and simplify calc_common_factors.F
451     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
452       advection subroutine (but still not used within DST advection S/R)
453    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
454    
455    checkpoint58j_post
456    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
457      from file (collects calls previously in FORWARD_STEP)
458    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
459    o adjoint store dir. adjusted accordingly
460    o genmake2
461      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
462    
463    checkpoint58i_post
464    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
465      on wind stress (SEAICEstressFactor defaults to 1.)
466    o Total number of Timers is finite (<=40): comment out 2 non-essential one
467      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
468    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
469      on CS-grid: no longer loosing mass.
470    o exf & curvilinear-grid: no longer modify longitude xC & xG.
471    o pkg/ggl90: fix sloppy output and fix a bug
472    o pkg/seaice: added SEAICEuseEVPpickup parameter
473      - Set to false in order to start EVP solver with
474        non-EVP pickup files when using SEAICEuseEVP
475      - fix sign error in diffusion in seaice_calc_rhs
476    
477    checkpoint58h_post
478    * Modifications for bottom topography control
479      o replace hFacC by _hFacC at various places
480      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
481      o add non-self-adjoint cg2d_nsa
482      o update autodiff support routines
483      o re-initialise hfac after ctrl_depth_ini
484      o works for 5x5 box, doesnt work for global_ocean.90x40x15
485    * Adding verification for 5x5 box (4-layer) bottom topography control
486    
487    checkpoint58g_post
488    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
489       used for mean seasonal cycle, mean diurnal cycle); add an example
490       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
491    o pkg/ggl90:
492      - add parameter (minimum surface kinetic energy)
493      - fix bug (avoiding division by zero)
494    o couple pkg/thsice to pkg/seaice:
495      - modify advection in seaice to accomodate new scalar fields to be advected
496      - only muliDimAdection scheme work with seaice/thsice
497      - mapping of thsice-variables to seaice-variables, back and forth
498      - does not break the verification experiments, but does not give the
499        desired results either
500    o pkg/seaice
501      - make (default) second order advection a bit less confusing?
502    
503    checkpoint58f_post
504    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
505      to pkg/seaice):
506      - new routines thsice_map_exf and thsice_get_exf provide the interface
507      - add an additional formal parameter to thsice_solve4temp
508    o pkg/exf:
509      - add new fields wspeed, snowprecip (to be able to couple to thsice)
510      - correct Stefan-Boltzmann constant
511      - new parameter for longwave surface emittance
512      - separate some stuff from exf_bulkformulae into new routines  
513        exf_radiation, exf_wind
514      - add new parameters and constants: longwave emissivity for ocean, ice
515        and snow, evaporation parameters over ice
516      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
517        either wind from stress or stress from wind
518    o pkg/thSIce:
519    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
520    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
521       and THSICE_CALC_THICKN
522    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
523    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
524      to make debugging easier.
525    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
526    o pkg/bulk_force:
527      - clean-up comments and parameters ;
528      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
529    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
530      generate new output for test-experiment: aim.5l_cs.thSI
531    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
532      testreport accordingly
533    
534    checkpoint58e_post
535    o SEAICE_CGRID adjoint done
536    o R_STAR adjoint implemented.
537      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
538      * need to sort out init. of h0facc, etc.
539    o Make pkg/profile fully independent of ecco,cost, etc. stuff
540      to be able to use it in pure forward.
541    
542    checkpoint58d_post
543    o upgrade simple test-experiment to tutorial example:
544     step.1: duplicate the experiment and (step.2) will remove the old copy.
545      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
546      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
547      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
548      tutorial_global_oce_biogeo    <- copy of dic_example
549      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
550      tutorial_plume_on_slope       <- copy of plume_on_slope
551      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
552      tutorial_global_oce_optim     <- empty for now (David ?)
553      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
554     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
555    o correct a sign problem in cost_scat.F
556    o obcs and ptracers: fix boundary conditions for advections schemes
557      with larger stencil
558    o thsice adjoint: start
559    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
560      completeness
561    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
562      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
563    o ptracers adjoint:
564      * avoid extensive recomputatations
565      * fix missing re-init. of gptr (missed by TAF)
566    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
567      me to turn off the excessive output to STDOUT that this package produces
568    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
569      and add those terms in Vector-Invariant formulation.
570    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
571      if the control period (xx_hfluxperiod etc) is 0
572    o in profiles pkg, clean routines and fix details
573    o in ecco pkg, reading ssh data:
574      fix problem in case the model does not start at iter0=0
575    o fix mnc-pickup/restart for ptracers
576    o new package prifiles:
577      code to compute profile-based cost by Gael Forget
578      (modifs in ecco, ctrl, autodiff)
579    o Benign bug fix in initialization (spotted by M. Mazloff) of
580      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
581    
582    checkpoint58c_post
583    o adjoint: finish NLFS adjoint and provide reference output in
584      verification/global_ocean.90x40x15/results_ad_nlfs
585    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
586      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
587      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
588      with SEAICE_CGRID defined.
589    o move calendarDumps from "data" to "data.cal" and clean-up the code
590      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
591    o add useEXF & useCAL flags (for now, set in hard-coded way)
592    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
593      (were missing in NH mode, and wrong in quasihydrostatic mode).
594      waiting for Chris updated version of calc_gw to add those CALLs.
595    o fix bug in quasihydrostatic S/R ;
596      add a test for this option: global_ocean.90x40x15.qshyd
597    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
598      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
599    o add on/off flag useOffLine for package OFFLINE
600    o seaice:
601      - modify advection so that it works also on the C-grid
602      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
603        problem in multi-tile runs with C-grid
604      - add flags for clipping ice velocities and/or masking solver forcing
605      - fix drag (ocean on ice) formulation and a bug that caused noise in the
606        C-grid solver
607      - added a few comments to seaice_diffusion.F
608      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
609        are now exclusive)
610      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
611        required re-ordering the code a little:
612       + make DAIRN global variable (defined in SEAICE)
613       + move computation of the viscosities eta and zeta into a new separate
614         routine (because I need to recompute them in seaice_ocean_stress.F)
615    
616    checkpoint58b_post
617    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
618      update output.txt of exp. aim.5l_cs.thSI
619    o various mnc cleanups and improvements:
620      + shrink lookup tables by factor of ~4
621      + better error reporting when running out of lookup space
622      + able to handle longer path/file names (up to 500 chars)
623    o adjoint:
624      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
625      - TBD: "hidden" mom_vecinv recomp. in dynamics
626    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
627     (allow to differentiate between forcing components using new integer flags:
628      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
629     and add new flag to put Dissipation tendency out of Adams-Bashforth.
630    o ecco
631      - enable trend removal from SSH anomaly obs.
632    o adjoint
633      - a fix for PmEpR when #undef EXACT_CONSERV
634      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
635      - try to fix "hidden" recomp. in forward_step for NLFS
636        (NLFS seems broken sometimes after I checked it in)
637    o seaice:
638     - add c-grid version of the dynamic solver:
639       + three new routines that are the c-grid substitute lsr, dynsolver
640         and ostres
641       + put a few fields that were local to dynsolver into global common
642         blocks, so that I can move the computation of stresses etc into
643         seaice_lsr (saves coding but may break the adjoint).
644     - replace more hardwired parameters by runtime parameters
645     - add ice masks that mask the rhs of the implicit solvers where there
646       is no ice (commented out in seaice_dynsolver, because i am not sure
647       if this works properly), eventually this should replace the clipping
648       of ice velocities in seaice_dynsolver to +/-40cm/s.
649    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
650      include it only where its needed
651    o move balancing of fluxes before the call of external_forcing_surf
652    o seaice:
653      - correct units of turning angles (now they are really in degrees)
654      - move computation of GWATX/Y out of main routine into dynsolver
655      - initialize GWATX/Y in seaice_init
656    o Apply mask on Fresh-Water flux (needed for SSH forcing).
657      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
658    o seaice: add runtime flags for turning angles (default to zero)
659    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
660      and trend from exf forcing and ctrl control adjustments
661    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
662      (since checkpoint57x_post)
663    o change the default rotation period to 86164.s = the Earth rotation
664    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
665      and based on a reference stratification. Tested within hs94.cs-32x32x5.
666    o seaice advection: add code for choosing between the default (2nd order
667      central differences) and multiDim advection schemes provided by
668      pkg/generic_advdiff
669    o seaice:
670      - removed all references to SEAICE_GRID.h fields from
671        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
672        (cubed-sphere configuration will change a little)
673      - grid computations in seaice_init are obsolete now.
674      - cleaned up code a little so that is easier to read (hopefully).
675      - added new (better?) discretizations of default advection and diffusion
676        (turn on with SEAICEuseFluxForm)
677      - replace 1 in 3d global fields by kSurface in growth.F
678      
679    checkpoint58a_post
680    o seaice:
681      - bug fix in advect.F
682    o shelfice:
683      - separate shelfice load anomaly from pload (breaks with time
684        dependent forcing), => introduce constant field shelficeLoadAnomaly.
685        Its default is 0., but it may be computed more cleverly from (unknown)
686        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
687        done offline. A good approximation of the pressure load anomaly is
688        necessary to avoid large initial adjustment processes underneath
689        deep-reaching shelfice.
690      - small fix in ISOMIP shelfice_thermodynamics
691      - add more sophisticated thermodynamics of Hellmer (1989), this is
692        now the default
693      - give a few constants more intuitive names
694    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
695      if bulk formulae are used in long integration (especially EmPmR). Turn
696      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
697      if balancePrintMean, the imbalance that is substracted is printed to
698      STDOUT.
699    o fix bug (typo) in obcs_apply_eta.F
700    o add a new package shelfice which enables us to model the circulation
701      underneath shelf-ice with draughts of hundreds of meters.
702     - works
703     - to do: + include improved thermodynamics
704              + check whether kSurfC (from model/inc/SURFACE.h) can be used
705                instead of new field kTopC
706              + can we use topoFile, Ro_surf and existing code in ini_depth.F
707                instead of new field R_shelfIce and new code in ini_depth.F
708                and ini_mask_etc.F?
709              + adjust vertical mixing schemes?
710    o seaice pkg:
711     - add a cpp-flag to include a simple formula for a salinity dependent
712       freezing point of sea water at the surface
713     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
714       meridional stresses are now different (and hopefully correct)
715    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
716       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
717       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
718    o pkg/diagnostics: add options and parameters for regional-statistics
719       diagnostics ; define regions by reading a region-mask from a file
720       (might add other options later)
721    o pkg/bulk_force:
722     - add option and parameters to use AIM surface-flux formulae.
723     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
724       others forcing fields (defined in PARM05, parameter file "data") are loaded
725       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
726     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
727     - use the right EXCH call for uwind,vwind (to work on CS-grid).
728     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
729       and parameters (note: calcWindStress replaces .NOT.readwindstress).
730     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
731    
732    checkpoint58
733    o add "--embed-source" option to genmake2 which, when the supporting
734      tools can be compiled (as determined by genmake2) will turn on the
735      embed_files package which then embeds the entire MITgcm source code
736      (*.[fFhc] + Makefile) used for the build within the executable
737      - requested by CNH but off by default
738      - adds a paltry <9MB to the mitgcmuv executable in most cases
739      - only writes the output when useEMBEDSRC in eedata is true
740    o clean up 3-dim. relaxation codes:
741      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
742      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
743      * Thanks to Tom Haine for testing!
744    
745    checkpoint57z_post
746    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
747      affects output (@ truncation level) of exp. plume_on_slope ; updated.
748    o fix the pickup behavior for obcs in combination with ptracers
749    o fix a bug in ptracers_external_fields_load
750    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
751      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
752    o transfered surface NH pressure to eta field (if exactConserv).
753    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
754         and update lab_sea output.txt file.
755    o completing 3-dim. relaxation code: additional term
756         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
757      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
758      * At compile time, in "EXF_OPTIONS.h" set
759          #define  ALLOW_CLIMTEMP_RELAXATION
760          #define  ALLOW_CLIMSALT_RELAXATION
761      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
762          tauThetaClimRelax3Dim = 15552000.0,
763          tauSaltClimRelax3Dim  = 15552000.0,
764      * 3 cases:
765          1) Use a constant-in-time 3-dim. field
766          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
767          3) Real-time relax. to time-evolving prescribed field
768    o Adding Laplacian-type smoothness constraint on
769      initial and boundary (forcing) controls (ic, bc)
770      * enable at compile-time via
771        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
772      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
773      * Absolute scale somewhat unclear so far
774      * no area weighting was included since no other cost term does so far
775    
776    checkpoint57y_post
777    First step for a NLFS adjoint
778    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
779    o new init. routines for calc_r_star, calc_surf_dr
780    o still need to deal with ini_masks_etc
781    o testreport seemed happy
782    checkpoint57y_pre
783    
784    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
785    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
786    o add new offset feature to offline pkg (plus minor cleanup)
787    o cfc fixes for final year of integration
788    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
789      be in GCHEM_OPTIONS).
790    
791    checkpoint57x_post
792    o fix testreport Pb in multiple test experiment.
793    o cleanup our namelist syntax in verification:
794      - make it more F95 standards compliant (some work still needed)
795      - allows the vast majority of our tests to work with gfortran
796    o Non-Hydrostatic:
797     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
798     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
799    o Allow to apply AB on T,S rather than on AB(gT,gS):
800     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
801     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
802       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
803     - need a "clever" read_pickup to restart from the other AB formulation
804    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
805    o remove some unused variables (reduces number of compiler warnings)
806    o adjoint
807      * Disable useVariableViscosity for adjoint for time being
808        (there are a number of extensive recomputations)
809      * Initialize certain variables needed for adjoint
810    
811    checkpoint57w_post
812    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
813                 fix the singleCpuIO RS version of MDSWRITEFIELD
814       and add a WARNING if using globalFiles=T with multi-processors.
815    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
816      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
817    o tracer advection scheme:
818      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
819       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
820       was not very convenient).
821      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
822       (further tests needed for the implicit DST & Flux-Limiter schemes).
823    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
824      and sRef for convenience, handy, when you want to initialize
825      ptracers in a large domain with a constant non-zero value. Also,
826      untangle ptracers_init.F a little.
827    
828    checkpoint57v_post
829    o change dome exp. to use variable viscosity in side-drag terms.
830    o remove all the files from the cfc_offline test since they are now
831      incorporated into tutorial_cfc_offline which has been producing
832      identical results for a few days of testing
833    o add new parameter: sideDragFactor to enable half-slip-side BC
834      and change side-drag S/R to use viscosity from mom_calc_visc
835      (can switch back by setting sideDragFactor=0.); affects results at
836      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
837       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
838    o vorticity & strain are now computed without masking, to account for
839      no-slip-side BC in variable viscosity calculation ; mask is applied
840      anyway later on, before computing advection/coriolis terms.
841    o modify exp4 to test new obcs support for reading from external files
842      and for passive tracers
843    o fix behavior of ptracers_monitor when monitor output is written to a
844      netcdf-file; still not independent of monitor.F (writes in the same
845      file).
846    o change default value of tRef (put a uniform, meaningful value for ocean
847      & atmos) and initialize sRef (was missing, as Martin mentioned).
848    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
849      to be proportional to enstrophy dissipation length.  Thus,
850       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
851      This is now consistent with Smagorinsky and with the manual.
852    
853    checkpoint57u_post
854    o OBCS and PTRACERS: add open boundary support for passive tracers
855      - either use homogenous (pseudo) v.Neumann conditions or prescribe
856        OB-values from file; this is not different from the way theta and salinity
857        are treated
858      - however, Orlanski-radiation conditions are not supported, and the model
859        will stop if you use pTracers and Orlanski at the same time.
860      - beefed up the rountine obcs_external_fields_load: now only those open
861        boundary values are overwritten with values from files for which there
862        are really files, otherwise the OB-fields remain untouched. This makes
863        it possible to use different OBs at different ends of the domain (as
864        with EXF)
865    o reduce number of exch calls in shap_filt (s2).
866    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
867      truncation level) 4/5 MLAdjust test results (11&12 digits match).
868    
869    checkpoint57t_post
870    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
871    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
872      same truncation, independent of the face number: affects affects several
873      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
874    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
875      note that biharmonic viscosity + no-slip was not tested in any experiment.
876    o fix bug in non-linear free-surf side-drag ; generate new output for
877      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
878    o make mnc honor the writeBinaryPrec flag for most kinds of output
879    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
880    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
881      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
882    o add brackets in multi-terms sum to get same truncation, independent of
883      the face number (manage to get exactly same value of gU,gV at the cs-edge)
884      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
885    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
886      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
887      a maximum grid-scale Reynolds number.  Also, changes all length calculations
888      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
889      Suggested values of viscosity parameters found in mom_calc_visc.
890      Many new viscosity diagnostics available.
891    
892    checkpoint57s_post
893    o Add clearing-house for viscosity calculations, mom_calc_visc and
894      correct numerous bugs in LeithD and Smagorinsky discretizations.  
895      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
896      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
897      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
898      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
899      The Strain-Tension form is now called with useStrainTensonVisc=.true.
900      ViscAhStrain and viscAhTension are now retired.
901    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
902    o In response to JMC's bug report, genmake2 now ignores any soft-links
903      that it finds in the *current* directory when searching for files.
904      Soft-links found in any other source directories will still work as
905      they did before.
906    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
907      a C routine to unlimit the stack size
908    o mnc-ify pkg/aim snapshot vars
909    o mnc-ify pkg/land as requested by Daniel
910    o various changes to mnc including:
911      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
912      - output can now be grouped so that all files within a group
913          change the ITER portion of their names in lock-step together
914      - can now read ("global") PER-FACE (in addition to PER-TILE) files
915          and works with both EXCH1 and EXCH2 (but needs more testing)
916      - writing works for all verification test cases w/ g77 on Linux
917    
918    checkpoint57r_post
919    o make MNC variable initialization happen earlier
920    o add diagnostics for (almost) each term of the momentum Eq.
921    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
922    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
923    o remove MINIMAL_TAVE_OUTPUT option ;
924      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
925    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
926      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
927    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
928    o add time-dependent SST, SSS control
929    o cost terms in ecco/ modularized (new cost_generic.F)
930    o cost_averages routines are modularized (new cost_averagesgeneric.F)
931    o new infrastructure for seaice model vs. obs misfits in seaice/
932      * driver from the_main_loop.F is seaice_cost_driver.F
933      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
934      * gradient check in Exp. 6a of natl_box_adjoint/
935    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
936      (see README file)
937    
938    checkpoint57q_post
939    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
940    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
941      - bug was reported by Jean-Michel and Ian Fenty
942    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
943      update exp. cpl_aim+ocn output.
944    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
945      Needed for high-res. runs with large global files
946      to be able to limit tapelev size
947    o Changed some tests for adjoint:
948      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
949      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
950      * global_ocean.90x40x15/ back to default 3-level checkpointing
951    o Modifications to enable scripted COMMON to MODULE conversion
952      * verification/OpenAD/code/ has necessary scripts and description;
953      * converts, compiles and runs successfully;
954    
955    checkpoint57p_post
956    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
957    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
958      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
959    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
960    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
961      (was already the case for dissipation with mom_vecinv,
962       and also the case for grad.PhiHyd when staggered-timeStep)
963      This will allow to put dissipation out-off the AB time-stepping.
964     Unfortunately, affects truncation error. Update output of exp. that "fails"
965      (cg2d matching number) and leave the others for later: front_relax(10),
966      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
967      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
968    
969    checkpoint57o_post
970    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
971      (2) its ready to be documented during the 20050801 DocFest
972    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
973      for ideal_2D_oce and lab_sea on linux_ia32_g77
974    o set to #undef CTRL_SET_OLD_MAXCVARS_30
975      in global1x1_tot/code_seaice_adj to access indices 32, 33
976      (worth another tag)
977    
978    checkpoint57n_post
979    o adding precip control xx_precip 32
980    o adding swflux control xx_swflux 33
981    o Replacing 10 forcing penalty cost routines by 1 generic.
982    o Implementing partitioning in time-mean and variable adjustment
983      for atmos. state.
984    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
985    o in natl_box_adjoint:
986      * updated exp 1 to 10
987        (but does not have time-mean vs. variable split results yet)
988    o updated global1x1/*_seaice_adj/
989      to incorporate latest changes
990    o enable useSingleCpuIO for mdsio vector routines
991      (applies in particular to tapelev I/O)
992    o removed inefficient K-loop in all active_file*control*.F
993    
994    checkpoint57m_post
995    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
996      and advect_cs (use EXCH-2 and standard cs-32 grid files).
997    o pkg/exch2: filling of face-corner halo regions is optional
998      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
999    
1000    checkpoint57l_post
1001     tag before updating tutorials (pre-release-2)
1002    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1003       for output and interpolation of input fields onto model grid)
1004    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1005       Affects results of exp. rotating_tank ; update output.txt.
1006    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1007          and taking the square quantity and/or using a fraction-weight field.
1008    o fix aim_diagnostics_init.F mate numbers.
1009    o add mnc output capability to diagnostics/diagstat and update
1010      our cvsignore files for the ACSII output generated
1011    
1012    checkpoint57k_post
1013    o lab_sea now uses diagnostics package and provides a suite of
1014      new EXF diagnostics output.
1015    
1016    checkpoint57j_post
1017    o exf
1018      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1019        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1020        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1021      * extended diagnostics output
1022        - now includes all EXF variables
1023        - hs, hl moved to common block
1024        - separate S/R for diagnostics, called after ctrl vector is added
1025        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1026        - EXFqnet contains true Qnet (i.e. includes qsw)
1027      * updated verif. lab_sea, global_with_exf
1028      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1029        to ensure that diagnostics sees a true EXFqnet
1030    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1031    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1032      several times with different frequencies.
1033    o mnc-ify the thsice package as requested by Daniel Enderton
1034      - the monitor--MNC output needs work
1035      - many attributes need to be added (most are currently blank)
1036    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1037      - many attributes need to be added (most are currently blank)
1038    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1039    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1040    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1041      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1042         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1043    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1044     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1045    
1046    checkpoint57i_post
1047    o Diagnostics package was changed: diagnostic allocation is now deactivated
1048      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1049    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1050      add 1rst Order upwind vertical Shear.
1051    o add a quick fix for A/B checkpointing in OFFLINE mode
1052    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1053      end-run around the C/Fortran linking horror in eesup/src/timers.F
1054    o added pkg/runclock: allows user to terminate run based on wall clock
1055    o added non-hydrostatic scaling parameter: nh_am2
1056    o pkg/my82: futile attempt to make results compiler-independent by adding
1057      some "_d 0", etc. no effect.
1058    o for mnc output, fill the 'T' coordinate var with myTime and create a
1059      separate 'iter' variable for iteration count
1060    o pkg/diagnostics:
1061      add new capability: output of Global/Regional & per-level statistics ;
1062      tested against monitor output (including land & thSIce) on various exp.
1063    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1064    
1065    checkpoint57h_done
1066      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1067      data.diagnostics, data.gchem, data.ptracers) is done.
1068    
1069    o pkg/diagnostics: prepare for Global/Regional statistics.
1070      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1071    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1072      and rename it: DIFFERENT_MULTIPLE
1073    
1074    checkpoint57h_post
1075    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1076    o pkg/diagnostics: change output frequency, now in seconds (instead
1077      of Nb of iterations). This requires to change data.diagnostics.
1078    checkpoint57h_pre
1079    
1080    o in mnc, let the user create the output dir if both mnc_outdir_date
1081      and mnc_outdir_num are false
1082    o add fflags() to pkg/diagnostics which allows one to specify, on a
1083      per-file basis, the file precision [default behavior is unchanged]
1084    o added diagnostics to pkg/kpp, including computation of mixed layer
1085      depth based on a temperature/density criterion
1086    o updated verification/natl_box to test the new pkg/kpp diagnostics
1087    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1088    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1089    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1090      not mnc -- this mistake was found by JMC and is now corrected
1091    
1092    checkpoint57g_post
1093    o add Adams-Bashforth 3rd Order time stepping:
1094      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1095      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1096    checkpoint57g_pre
1097    
1098    o make lambda[Theta,Salt]ClimRelax spatially varying
1099      (default remains spatially uniform constant based on tau)
1100    o added new control variables
1101      * init. uVel, vVel, etanN
1102      * lambda[Theta,Salt]ClimRelax
1103    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1104      (suggested by G. Forget)
1105    
1106    checkpoint57f_post
1107    o add parameter "baseTime" = model base time = time at iteration zero
1108      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1109      account for baseTime shift
1110    o move Coriolis arrays from PARAMS.h to GRID.h
1111    checkpoint57f_pre
1112    
1113    o mnc-ifying the seaice package
1114    o introduced an alternative length scale calculation for use in the limiting
1115      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1116    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1117    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1118      as well as grad(vort3).  Made it compatible with both approximate form
1119      for the cubed sphere and full form of these gradients.  Added flag
1120      useFullLeith to select between approximate and full form.  
1121    o add "d0" in getcon.F to reduce differences between compilers/platforms
1122      update output.txt of exp. fizhi-gridalt-hs
1123    o change port_rand funtion to allow to set the seed.
1124    o fix obscure MNC bug involving conversion between reals and integers
1125      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1126        new version is now more standards-compliant
1127    o adjoint-related modifications
1128      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1129      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1130      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1131    
1132    checkpoint57e_post
1133    o Adding eddy stress controls a la Ferreira et al.
1134    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1135    
1136    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1137      update output.txt of exp. fizhi-gridalt-hs
1138    o add more "Z" dimensions and associated coordinate vars to MNC
1139    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1140    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1141      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1142      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1143      months and years.  Requires pkg/cal.
1144    o diagnostics: add pickup functionality
1145      - off by default for backwards compatibility
1146      - current version only uses MDSIO -- MNC will be added
1147    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1148    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1149    
1150    checkpoint57d_post
1151    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1152    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1153      output from the diagnostics package
1154    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1155    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1156      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1157    o add coordinate variables to the MNC output from the diagnostics package
1158    o change MNC-flags default value: true when useMNC=TRUE
1159    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1160      the ability (off by default) to read the grid information using MNC
1161    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1162    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1163    o do snap-shot diagnostics at the middle of the time-interval (instead of
1164      at the end).
1165    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1166      new test for AIM with thSIce + slab-ocean
1167    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1168    o move state variable diagnostics to the beginning of the time step ;
1169      (note: still needs some work specially for snap-shot diagnostics)
1170      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1171    
1172    checkpoint57c_post
1173    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1174    o generate new output.txt files on faulks with g77 & the new -ieee option
1175    checkpoint57c_pre
1176    
1177    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1178      update output.txt of exp. global_ocean.90x40x15
1179    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1180      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1181    o add saltFlux(+File) forcing capability with periodicExternalForcing
1182    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1183    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1184    o improvements for the MNC output from DIAGNOSTICS:
1185      - correct handling of the unlimitied dimension
1186      - all dims now have associated coordinate variables
1187      - variables located at U, V, and Corner ("Z") points are now written
1188        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1189        *all* data points are output
1190    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1191    o added pkg/seaice/seaice_monitor.F
1192    o mdsio_readfield.F can now read files visible only to master MPI process.
1193    o pkg/seaice: some test code for ice-modified ocean stress
1194    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1195      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1196      spurious negative numbers for precipitation and humidity.  Will cause
1197      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1198    o pkg/ctrl/
1199      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1200        May be enabled via doPackDiag
1201      *  introduce z-scaling of
1202         + gradient (doZscalePack) and
1203         + control (doZscaleUnpack)
1204    o pkg/mdsio/
1205      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1206      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1207    
1208    checkpoint57b_post
1209    o simplify options in diagnostics_fill arguments (remove weird combinations)
1210    o fix MNC coordinate variables so that they now contain per-face index
1211      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1212      general, EXCH2 grids are only aligned to a "local" coordinate system
1213    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1214    o Implement instantaneous output within pkg diagnostics:
1215      setting a negative frequency in data.diagnostics produces
1216     "snap-shot" output (as opposed to time-average if freq > 0)
1217    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1218      NOTE: change ptracer diagnostics name: use 2 characters to work with
1219            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1220    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1221      becomes the coordinate variable for the 'T' dimension
1222    o add CF-style coordinate variables to MNC
1223      - just a first cut:  numbers are meaningless on the cubesphere and
1224        missing along the T axis but otherwise it works!
1225    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1226    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1227    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1228      this is based directly on what the model compute, so that the content of
1229      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1230    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1231    o clean up build options files for SunOS, in particular
1232      - remove -traditional from xmakedepend
1233      - change -xarch=v9 to -xarch=native for f77
1234      - restore use of make (not gmake)
1235      - add CC=gcc if using g77
1236    o changes per discussion of AM, JMC, & EH3 today:
1237      - move redundant "grid" variables out of "state" -- in preparation of
1238        creating proper CF-style coordinate variables and in recognition
1239        that any/all grid variables can be easily copied (eg. w/NCO) from
1240        the grid files into any of the other NetCDF files
1241      - *always* output grid variables with MDSIO (this will eventually be
1242        changed)
1243      - output MNC grid file if useMNC is true
1244    o every instance of _END_MASTER() has been found and replaced with
1245      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1246      preprocessors
1247    o re-arrange diagnostics pkg initialisation:
1248     - allow each package to extend the available diagnostics list
1249     - add some checking and fix small problems (multi-threaded, ...)
1250     - new S/R diagnostics_fill (replace fill_diagnostics):
1251       look through the short list of active diag. (instead of the long list)
1252       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1253    
1254    checkpoint57a_post
1255    o this set of changes restores TAMC compatibility
1256      tested for global_ocean.90x40x15 adjoint on trough
1257      (what a pain)
1258    
1259    checkpoint57a_pre
1260    o some modifs in tools/build_options for sunos
1261    o call ctrl_pack for ctrl at end for optimcycle=0
1262    
1263    checkpoint57
1264    o add horizontal bi-harmonic viscosity for vertical velocity
1265      - new parameter viscA4W (defaults to viscA4)
1266      - affects only non-hydrostatic code
1267      - to be done: no-slip lateral boundary conditions
1268    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1269    o implement Implicit Vertical advection for pTracers
1270    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1271      (implemented also for implicit vertical diffusion & advection)
1272    o OBCS: extend application of tracer open boundary conditions
1273      to a strip beyond the boundary of width Olx/Oly
1274    o add call monitor to TAF set of required calls (flow directives)
1275      and include in natl_box_adjoint
1276    o untangle a few ifdefs related to cost, ctrl, autodiff
1277      untangel a few ALLOW_ECCO_OPTIMIZATION
1278    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1279      (theta2, salt2 in ecco_cost_weights)
1280    
1281    checkpoint56c_post
1282    o OBCS as control variables
1283      - update ctrl_ad_diff.list, obcs_ad_diff.list
1284      - remove balance of obcs controls from default
1285      - fix index bug nobcs in ctrl_init
1286      - fix dummy fields filen in ctrl_pack
1287      - add dummy weights for obcs
1288    o lsopt: comment out fort.94 output
1289    o optim:
1290      - remove unnecessary header files
1291      - adjusted namelists
1292      - add xerbla.F to Makefile
1293    o exf:
1294      - multiple modifications of exf_check_range
1295      - unit change in exf_init_runoff from [m/year] to [m/s]
1296    o mdsio:
1297      - i/o-vector change debugLevel from debLevA to debLevB
1298    
1299    checkpoint56b_post
1300    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1301      is called from DO_THE_MODEL_IO
1302      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1303      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1304      - clean up PTRACERS_WRITE_TIMEAVE a little
1305    o add another verification experiment that tests both the cfc-pkg and
1306      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1307      reactive tendencies treated inline with regular timestepping
1308    o testreport previously did a lousy job of comparing small numbers, so
1309      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1310      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1311      testreport.
1312    o ptracers_monitor: bug fix for MPI
1313    
1314    checkpoint56a_post
1315    o GCHEM: finish reorganizating the package
1316      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1317        (introduces another 3D-array for each passive tracer, but only if
1318        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1319        gchemTendency is not needed because the timestep is done separately)
1320      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1321      - GCHEM is now---more or less cleanly---separate from PTRACERS
1322      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1323        so clear to me how that should be done in a general way.
1324    o CFC: improve formatting of output in CFC_ATMOS
1325    o PTRACERS:
1326      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1327        that ALL experiments with ptracers enable can be checked. This makes
1328        GCHEM_MONITOR obsolete.
1329      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1330        monitorFreq
1331      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1332    o add PTRACERS (PTR0[1-5]) to testreport output
1333    o exf_check_range:
1334      * default changed to .TRUE.
1335      * will check values for niter0 if debLevA, every timestep if debLevB
1336      * STOP in exf_check_range if 'out of range'
1337      * range chosen generous to allow for potential extema
1338      TBD: a version with stricter range
1339           permitted range would be runtime parameters
1340    o GMredi:
1341      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1342      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1343      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1344    o GCHEM:
1345      - move call to GCHEM_FORCING_SEP, so that it is now called before
1346        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1347      - introduced a useGCHEM runtime flag and applied it everywhere.
1348      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1349        this flag is now only visible within GCHEM-pkg routines.
1350      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1351        be replaced by a 3D array that is computed before thermodynamics; for
1352        this, the tracer ID iTracer had to be included into the parameter list
1353        of ptracers_forcing
1354      - set up forward_step to call gchem_forcing, that will replace
1355        gchem_forcing_int in ptracers_forcing
1356      - cleaning up
1357    o small cleaning of exch2: remove files that are also in eesupp/src
1358    
1359    checkpoint56
1360    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1361    o mnc: cleanup "full" files--fixes out-of-memory problem
1362    o ECCO-GODAE
1363      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1364      * fully merged and updated from SIO code
1365        windstress sign change affects
1366        - exf_inscal_[u/v]stress
1367        - sign of xx_tau[u/v] adjustments
1368        - signs in cost_scat
1369      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1370      * natl_box_adjoint updated and compressed
1371      * 2-level checkpoint switch added
1372        (tested in EXP. 1 of natl_box_adjoint)
1373      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1374    o SVD
1375      * first complete, non-hacked version for SVD calculations
1376      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1377        performed via direct access files admtlm_vector.it????
1378        (via ctrl_[un]pack)
1379      * optimcycle is used for ARPACK iteration counter
1380        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1381      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1382        and add linear transforms where necessary
1383      * controls are initial/final SST, SSS (can be extended; need to check
1384        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1385    o mdsio: filename info to both stderr, stdout
1386    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1387      from sign change
1388    
1389    checkpoint55j_post
1390    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1391      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1392    o add consistent build directories and .cvsignore files to verification
1393    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1394    o make all subroutines 30 or less characters in length for certain older
1395      compilers to work (a thorough search only turns up two routines in
1396      pkg/ptracers)
1397    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1398      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1399    
1400    checkpoint55i_post
1401    o change arrays for total vertical diffusivity (2.D if explicit,
1402      3.D if implicit) ; each ptracer uses its own background value.
1403    o added mnc/NetCDF output capability to ocn_compon_interf
1404      - added bits to verification/cpl_aim+ocn so that it can run on
1405        ITRDA and other clusters without the mpirun "-wd" option
1406    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1407      configuration
1408    o give MNC the ability to create additional files rather than
1409      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1410      - the default is just less than 2GB which is a practical limit
1411        on many systems
1412    o Compute the non-local term using either KPP vertical diffusivity (=default)
1413       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1414    
1415    checkpoint55h_post
1416    o add verification test "vermix"
1417    o remove all the *_ioinc flags and replace with the single global
1418      outputTypesInclusive flag
1419    o allow to set a vertical profile of vertical diffusivity for T & S
1420    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1421    o useMNC moved from data.mnc to data.pkg
1422    
1423    checkpoint55g_post
1424    o Renaming carbon AD experiments to comply with testreport conventions
1425    o Updating adjoint of Held-Suarez hs94.1x64x5
1426    o Fixing directives for non-ECCO forward_step, after ECCO directives
1427      have been fixed to avoid recomp. of do_oceanic_phys
1428      Works well for global_ocean.90x40x15,
1429      but recomp. issue remains for carbon
1430    o Updating adjoint output for natl_box_adjoint after
1431      pkg/ecco has been modified (see taga c55d_post)
1432    
1433    checkpoint55f_post
1434    o rename to timeave_init_fixed
1435    
1436    checkpoint55e_post
1437    o some delicate re-shuffle of store directives to avoid one
1438      extra call of do_oceanic_physics
1439      affects ecco_the_main_loop.F, do_oceanic_physics.F
1440      checkpoint_lev1_directives.h
1441    o NB: this may break global_ocean adjoint temporarily,
1442      but it is clear how to fix it. Will do later, need this now.
1443    
1444    checkpoint55d_post
1445    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1446    o ecco_cost_weights is modified to 1x1 runs
1447    o modifs to allow observations to be read in as
1448      single file or yearly files
1449    o enable to read exf forcing fields as either
1450      single file or yearly files (flag useExfYearlyFields)
1451    checkpoint55d_pre
1452    
1453    o switch between 2-level and 3-level checkpointing
1454    o add ability of MNC to write local and "partial" (eg. 2D slices where
1455      the full 3D field is never actually stored) arrays to NetCDF files
1456      with the correct (that is, the complete multi-dimensional) set of
1457      array indicies
1458      - used in mom_vecinv() to write the diagFreq output
1459      - tested (demonstrated) in verification/aim.5l_cs
1460    o further mnc-ification
1461      - add verification/lab_sea to the list with mnc setups
1462      - fix undefined mnc v-names in cd_code
1463      - add kpp to mnc output (both snapshot and timeave)
1464    o non-hydrostatic code
1465      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1466        in calc_gw.F
1467      - defaults to viscAh
1468      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1469        friction or Leith) in non-hydrostatic mode, as long as there is
1470        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1471    o pkg/cost
1472      extend simple cost functions to treat time mean quantities
1473      (T,U,V) via cost_accumulate_state from cost_tile
1474    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1475        be 2 times larger than the minimum size the advection scheme requires.
1476        now get a perfect conservation of salt in advect_cs test-exp (updated)
1477    o GGL90 (Gaspar's TKE mixed layer)
1478      - add horizontal diffusion of TKE, requires exchanges in
1479        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1480        default. In OPA there is no horizontal diffusion of TKE but the
1481        mixing coefficients are computed from a horizontal average of TKE of
1482        6 points or so. I think that diffusion has a little more physical
1483        justification.
1484      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1485        was in vain)
1486      - mask tke-variable in ggl90_init
1487    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1488    o fix biharmonic diffusion on CS-grid.
1489    o more obcs stuff
1490      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1491        for reading boundary values. This routine is called from
1492        obcs_prescribe_read
1493      - updated obcs_check
1494      - changed sponge layer relaxation parameter units for days to seconds
1495      - turned off sponge layer by default
1496      - changed argument list of OBCS_CALC to myTime+deltaTclock
1497      - fixed about 35 bugs in obcs_external_fields_load
1498    
1499    checkpoint55c_post
1500    o obcs stuff
1501      - new runtime flags useOBCSprescribe, useOBCSbalance
1502      - re-arranged obcs_calc
1503      - moved exf_getobcs to obcs_prescibe_read
1504        obcs_prescibe_read is called after ORLANSKI stuff
1505        and independent of it (executable can contain all).
1506      - updated obcs_check
1507      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1508        These may be necessary only if tangential velocities are
1509        prescribed at OB, not sure, needs testing.
1510    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1511      which simplifies the calls and passes the ifc check-bounds test
1512    
1513    checkpoint55b_post
1514    o add a 2D scalar, Z location, exchange_2 routine.
1515    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1516      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1517      affects advect_cs results (for the wrong reason): update output.txt
1518    o use a more standard discretization for biharmonic viscosity ;
1519     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1520      affects results of dome set-up: update output.txt
1521    o fix gad_advection.F (CubedSphere part), back to version 1.23
1522    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1523    
1524    checkpoint55a_post
1525    o merged code to
1526      * prescribe/read time-dependent open boundaries
1527        (works in conjunction with exf, cal)
1528      * sponge layer code for open boundaries
1529      * each boundary N/S/E/W now has its own CPP option
1530        (healthy for the adjoint)
1531    
1532    checkpoint55
1533    o up-to-date adjoint of previous breaks
1534      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1535      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1536      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1537      - carbon: * remove tr1-related adjoint verification
1538                * add ptracer as control variable
1539    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1540      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1541    
1542    checkpoint54f_post
1543    o in verification/carbin/ remove experiment related to
1544      ALLOW_PASSIVE_TRACER (array tr1 etc)
1545      code_ad/ input_ad/ results_ad
1546    
1547    o add two new packages
1548      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1549        + subject to optimization (memory)
1550      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1551        + subject to reordering (many GOTOs in the original code)
1552        + so far opps is called for every (i,j) point, and then operates in
1553          the vertical; one may want to reorder the scheme in order operate in
1554          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1555          fields)
1556    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1557      - all verification tests compile and run with linux_ia32_g77
1558      - defaults are compatible with current input files--nothing
1559        should change if you were not previously using MNC
1560      - MNC output has been added in numerous places (eg. timeave)
1561        but there are still a few writes not yet do-able with MNC
1562        (this is in progress)
1563      - flags now allow for either/or/both use of MDSIO and MNC and
1564        documentation will soon follow
1565      - numerous small formatting cleanups for ProTeX
1566    o add version info (via BUILD_INFO.h) to MNC and stdout
1567    
1568    checkpoint54e_post
1569    o add two new packages
1570      - pp81 (Packanowski and Philander, 1981), Richardson number and
1571        stratification dependent mixing
1572      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1573      - these scheme operate in a similar manner as KPP (without ghat, of
1574        course), however there is only one diffusivity that is used for both
1575        temperature and salinity (and passive tracers)ç
1576    o add offline package
1577    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1578      provided by Stephanie Dutkiewicz
1579    o genmake2: add ability to search for C compilers and cleanup test output
1580      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1581    
1582    checkpoint54d_post
1583    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1584    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1585      leading to additional shift by 5 days each year of integration
1586       (i.e. leading to considerable offset over the years)
1587    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1588    o start with no AB and no initial filtering (staggerTimeStep):
1589      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1590    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1591      (external loading & cpl import/export stay in forward_step.F)
1592    o update coupling interface to work with new staggerTimeStep
1593    o change MDSIO ptracers_pickup.
1594    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1595    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1596    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1597    
1598    checkpoint54c_post
1599    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1600      this affects (truncation error) output.txt of test-exp:
1601       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1602    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1603    o change Qnet to always be the net heat flux, (+upward).
1604      affects (truncation error) output of natl_box exp.: updated
1605    o define the max number of passive tracers in PTRACERS_SIZE.h
1606    o start to test mnc routinely in exp0
1607    o add sea-ice loading (sIceLoad) as a new forcing field.
1608    
1609    checkpoint54b_post
1610    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1611       impressive on Altix and Opteron systems)
1612    o diagnostics can now write NetCDF files through the mnc package
1613    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1614    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1615    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1616      affects (truncation error) output of lab_sea & natl_box exp.: updated
1617    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1618    
1619    checkpoint54a_post
1620    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1621    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1622    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1623    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1624      + internal_wave (shift in writing cg2d_ini_res)
1625    checkpoint54a_pre
1626    
1627    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1628      - modified verification/lab_sea and natl_box_adjoint accordingly
1629    
1630    checkpoint54
1631    checkpoint53g_post
1632    o prepare splitting of thermodynamics: store convect.counter in common block
1633    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1634      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1635    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1636    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1637    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1638    o restore adjointability
1639    
1640    checkpoint53f_post
1641    o modifications that affect AIM experiment results (update output.txt):
1642      - no advection of S at top interface Nr (pkg/generic_advdiff)
1643      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1644    o AIM pkg:
1645      - include stability function into surf.Flux derivative relative to Tsurf
1646      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1647    
1648    checkpoint53e_post
1649    o merged cylindrical coord configuration
1650    o added rotating_tank experiment
1651    checkpoint53e_pre
1652    
1653    checkpoint53d_post
1654    o faulks upgraded: re-generate output.txt that have changed:
1655       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1656    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1657    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1658    o added Sadourny discretization of Coriolis
1659      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1660      - re-enabled use of omega3 (useAbsVorticity)
1661    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1662      vector-invariant equations
1663      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1664    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1665      hopefully without new bugs
1666      - still to do: biharmonic friction for non-hydrostatic w
1667    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1668    o regenerated output for global_ocean_ebm (using -ieee)
1669    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1670      of mom_common/
1671      - simple re-arrangement of instructions within computing loop
1672    checkpoint53d_pre
1673    
1674    checkpoint53c_post
1675    o new version of coupler for AIM+thSIce and Ocean models
1676     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1677     - land: change Evaporation of snow
1678     - aim with thSIce: fix bug in snow-precip.
1679    o changes to calc_gw.F
1680     - bug fix for w^2 term near the bottom boundary
1681     - (hopefully) improve the lateral slip boundary condtions for use with
1682        partial/looped cells
1683      - because the bug fix changes two verification experiments anyway (exp5
1684        and plume on slope), change the lateral boundary condition from half slip
1685        to the value of no_slip_sides
1686    o ebm package wasnt quite up to the parallel task. Fixed that.
1687    o Adjoint of EBM package + verification
1688      * TLM OK
1689      * ADM not sufficient accuracy yet (needs further testing)
1690    
1691    checkpoint53b_post
1692    o Commiting new energy balance model to repository
1693      * package is pkg/ebm
1694      * verif. is verification/global_ocean_ebm
1695      * references are in ebm_driver.F
1696    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1697    C        Global thermohaline circulation. Part I:
1698    C        Sensitivity to atmospheric moisture transport.
1699    C        J. Climate 12(1), 71-82
1700    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1701    C        Global thermohaline circulation. Part II:
1702    C        Sensitivity with interactive transport.
1703    C        J. Climate 12(1), 83-91
1704    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1705    C        Destabilization of the thermohaline circulation
1706    C        by atmospheric eddy transports.
1707    C        J. Climate 7(12), 1870-1882
1708    o Will need long integration testing.
1709    checkpoint53b_pre
1710    
1711    o created pkg/mom_common in preparation for variable viscosity code
1712    o renamed and split ini_mnc_io
1713    o pkg/land: only liquid water can diffuse or run-off
1714    o AIM using land: soil wetness availability account for snow
1715    o added printMapIncludesZeros to EEPARMS namelist
1716    
1717    checkpoint53a_post
1718    o restore TAMC compatiility for exf_constants.h
1719      (no usage of _d in .h)
1720    o Additional storing in KPP in an attempt to fix
1721      TAMC problem with adjoint of KPP code.
1722      (no success...)
1723      Identical code works fine with TAF.
1724    o Fixed verification/natl_box_adjoint experiments.
1725      Initial conditions for Experiments 4 and 5 are now
1726      set to "SEAICE_initialHEFF=0", which is more reasonable,
1727      and hence gives results closer to that of Experiment 2.
1728      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1729    
1730    checkpoint53
1731    o stable checkpoint with up to date adjoint
1732      TLM tests only run for 1st grdchk at the moment. Its unclear if
1733      this is a code problem or a problem with resetting code for g_
1734      variables that is being autogenerated wrong.
1735      Otherwise:
1736       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1737       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1738         are both still in chaos following their security messes.
1739    
1740    checkpoint52n_post
1741    o various build (mostly genmake2) changes including:
1742      - ability to build/run more easily within Cygwin and MacOS X
1743      - more complicated Makefiles with a stronger dependence on Gnu Make
1744  o pkg/seaice modifications  o pkg/seaice modifications
1745    - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost    - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1746      of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer      of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer

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