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revision 1.271 by heimbach, Tue Mar 23 19:47:05 2004 UTC revision 1.833 by mlosch, Thu Jun 7 14:02:06 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     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
9       requires a new routine: seaice_diagnostics_fill.F
10     - make sure that seaice does not move if not forced (pressure replacement
11       method, Hibler and Ip, 1995), changes results
12     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
13     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
14       It is turned off by default (=-1.), because it changes the results.
15     - make it possible to read AREA from a file, too.
16    
17    checkpoint59c
18    o add S/R and diagnostics for oceanic mixed-layer depth
19    o move GMRedi call after all vertical mixing schemes (including KPP)
20    o pkg/thsice:
21     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
22      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
23    o pkg/obcs:
24     - bug fix for balance code
25    o pkg/seaice:
26      - allow values of SEAICE_elasticParm > 1
27      - add new parameter SEAICE_evpTauRelax as an alternative
28        to SEAICE_elasticParm
29      - make lsr boundary conditions free slip (by default), changes result
30      - add code for no slip boundary conditions for lsr
31      - set minimum of zeta to zero (and not 4e8) (changes results)
32      - add a cap on AREA after advecting AREA if seaice_growth is not called
33    o change calculation of Visbeck K:
34      - no longer depend on tapering scheme; instead, compute slope (limited
35        by GM_maxSlope). this is equivalent to what was comuted before with
36        clipping or linear tappering.
37      - fix vertical averaging (wrong by 1/2 level)
38      - leave the old version (but will not be maintained) within
39        #ifdef OLD_VISBECK_CALC / #endif
40      - update output of exp. ideal_2D_oce
41    o change error catch in calc_r_star to improve vectorization
42    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
43      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
44    o adjoint:
45      Re-organized adjoint checkpointing according to Matt Mazloff
46      (but with modifs/completions/cleanups)
47      Storing is now bundled into large arrays to optimized I/O
48      (and second step in cleanup of the_main_loop)
49    
50    checkpoint59b
51    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
52      - export/import (between ocean & coupler) fields needed for ocean DIC.
53    o pkg/seaice:
54      - get rid of three more exchanges seaice_calc_viscosities (required
55        different loop boundaries in seaice_lsr and seaice_ocean_stress)
56      - bug fix in seaice_ocean_stress (update of lab_sea required)
57      - reduce loop boundaries to necessary minimum also in seaice_evp
58      - go back to the old way of computing deltaC/Z as the adjoint likes that
59        better
60    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
61      passive tracer to an Age Tracer) + update output.txt
62    o pkg/exf:
63      - implement A-grid / C-grid selection for wind-stress input files.
64      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
65      for now, in exf_bulk_largeyeager04.F only :
66      - change implementation for case where windspeed + 2. components wind-stress
67        are read-in. AND use rhoConstFresh to convert evap.
68    o pkg/seaice:
69      - use correct EXCH_UV for wind-forcing (on A-grid).
70      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
71        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
72    o pkg/exf:
73      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
74      EXF_INTERPOLATION:
75      - merge global_with_exf/code version of exf_interp_read.F
76        to the main code ;
77      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
78        reading the file ; Important: This options needs to be defined to recover
79        previous code.
80        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
81      - no longer loose real*8 precision along the way when using exf_iprec=64.
82    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
83      - change discretisation of evp-solver in order to avoid another exchange
84        (changes lab_sea) and clean up a little
85      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
86        help the adjoint (this also changes the results slightly)
87      - add a few "_d 0" where they had been missing in seaice_evp.F
88      - cleaning up: remove unused seaice_calc_rhs.F
89    o pkg/exf: some cleaning-up:
90      - change various "constants" into runtime parameters
91      - cleaned-up Large&Yeager04 routine which should eventually
92        replace exf_bulkformulae.F (changed names of S/R and CPP)
93        and merged various ALLOW_ATM_WIND options
94     only used with thsice pkg (in thsice_get_exf.F):
95      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
96        which are used when useStabilityFct_overIce=TRUE (= the default)
97      - change default values of ice & snow emissivity and scale downward LW
98        by ice & snow emissivity.
99    o pkg/thsice:
100     fix few little problems, in thsice_calc_thickn.F:
101      - growth vertically (and not laterally) if iceFrac == iceMaskMax
102      - melt only laterally if hIce < hThinIce (as the comments say)
103      and in thsice_extend.F:
104      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
105      - start to form ice as soon as the minimum ice-volume is reachable.
106     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
107      and cpl_aim+ocn
108    o pkg/kpp
109     - move computation of surface related input fields to KPP into a new
110       subroutine kpp_forcing_surf.F
111     - remove wrong (within bi,bj loops) EXCH calls.
112     - little cleaning (add argument myThid in last position, cvs header ...)
113     - for now, fix conservation problem by exchanging KPPviscAz (may not
114       be the best fix)
115    o pkg/seaice
116     - check for inconsistent evp parameter/cpp-flag combination
117     - remove leftover errIO flat for obsolete name list error handling
118    o OpenAD
119     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
120    
121    checkpoint59a
122    o pkg/seaice: some parameter clarifications and a little bit of clean up
123    o pkg/thsice: rename run-time parameters:
124       himin       -> hIceMin
125       himin0      -> hThinIce
126       hihig       -> hThickIce
127       i0          -> i0swFrac
128       transCoef   -> bMeltCoef
129       frac_energy -> fracMelting
130      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
131       with default values (for now) that do not change the results.
132      remove old version of thsice vars advection in pkg/seaice.
133    o in FFIELDS.h:
134      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
135      - make pLoad & sIceLoad always available (but still only used if
136         ATMOSPHERIC_LOADING is #define).
137    o pkg/kpp: replaced _KPP_RL with _RL
138    o bug fixes for vertical diffusivity computations when both KPP and
139        3D diffusivity arrays are used.
140    o pkg/seaice: fix bug in evp solver, while doing that
141      - change (improve?) discretization of stress computations for both
142        cgrid-lsr and evp solver
143      - add a new routine to compute strain rates
144      - the above changes lab_sea results
145      - add no slip conditions for evp solver (off by default), lsr-version
146        may follow
147      - fix exchange for shear at Z-points (does not change lab_sea)
148      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
149        (to force the user to pick a time step since there is not "safe" way
150        of choosing it)
151      - add principal stress diagnostics
152      - rearrange fields for evp a little to avoid having to call a: too many
153        exchanges and b: exchanges for stress trensor components which we do
154        not have.
155      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
156        of evp, complete rewrite for lsr case (latter is does not yet work
157        in all cases)
158    o pkg/kpp: add code to have mixing in shelf ice caverns
159      - add myThid to all kpp routines (long overdue)
160    
161    checkpoint59
162    o pkg/exf:
163      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
164        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
165      - move exf header files from lower_case.h to UPPER_CASE.h ;
166        add missing cvs Header & Name
167      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
168      - add namelist param. selectStressGridPosition, exf_monFreq
169      - retire many _CLIM routines, and remove data.exf_clim
170        + params moved to data.exf
171        + climsst, climsss now handled by exf_set_gen, i.e.
172          climss?period=0 refers to constant field,
173          climss?period=-12 to monthly forcing
174      - split up namelists in data.exf
175    o pkg/seaice:
176      - remove seaice_exch and seaice_exch_uv
177      - remove superfluous exchange of theta
178      - add myThid to seaice_budget_ocean/ice
179      - add new interface for atmospheric wind forcing (C-grid only)
180        + new routine
181        + two new field (taux, tauy for stress over ice)
182        + removed one global field (DAIRN) for C-grid case only
183    o pkg/thsise
184      - 2nd set of modifs for thsice adjoint in conjunction with exf
185    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
186    
187    checkpoint58y_post
188    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
189      vertical diffusivity, similar to that in MOM4; turned on using
190      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
191      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
192    o Added capability for 3D specification of background vertical diffusion
193      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
194      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
195      "data" file that contains the 3D vertical diffusivity coefficients.
196    o ice dynamics (pkg/seaice) with thsice thermodynamics:
197      - add code within pkg thsice to advect & diffuse sea-ice fields
198      similar to (and will replace) what has been added in  seaice_advdiff.F,
199      but: - conserving Mass, Heat & Salt.
200           - better when using non-linear advection scheme (not yet fully tested)
201           - can also be used in atmospheric set-up (for now, only the diffusion).
202    
203    checkpoint58x_post
204    o IO option for global-file compact format:
205      - add options when generating topology (utils/exch2/matlab-topology-generator)
206      - add I/O capability (pkg/mdsio).
207      - adapt utils/matlab/rdmds.m to read this format.
208      for now long-line format not yet supported by pkg/mdsio (& exch2).
209    o shelfice: add a few diagnostics
210    
211    checkpoint58w_post
212    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
213      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
214      (and replace horiVertRatio in NH code).
215      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
216                         and tutorial_plume_on_slope (sensitive to truncation)
217    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
218      directly to drive seaice model (C-grid only)
219    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
220     - reintroduce computation of wind from stress,
221     - compute tau (in exf_bulkformulae.F) from windstress averaged to
222       mass points to avoid tau = 0
223     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
224    o rdmnc.m: make it work with "global" files created with gluemnc
225    o rdmnc.m : some improvements in dealing with singleton dimension
226      (tested on all testreport mnc output files).
227    o genmake2: disable pkg/profiles if netcdf test fails.
228    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
229    o move call to cal_readparms up to make calendar parameters/variable available
230      to all packages
231    
232    checkpoint58v_post
233    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
234      useDynP_inEos_Zc tested.
235    o pkg/exf: changes to properly interpolate/mask/scale initial fields
236    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
237      and portions thereof.  See read_cs.txt for description and examples.
238    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
239      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
240      following the great-circle arc between those 2 points.
241    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
242      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
243    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
244     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
245     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
246     - still needs work (not working with some options ; efficiency to improve)
247       and serious testing.
248     - use this scheme for temperature & salinity in 2 advection test exp.:
249       advect_xy & advect_xz, respectively.
250    
251    checkpoint58u_post
252    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
253    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
254    o testreport: add option "-skipdir" to skip some test.
255    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
256      momentum calculation.
257    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
258    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
259      remove checkpoint.F and the_correction_step.F (no longer used);
260      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
261    o add option (linFSConserveTr) to correct for tracer source/sink due to
262      Linear Free surface
263    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
264    o pkg/thsice: fix reading mnc-pickups
265    
266    checkpoint58t_post
267    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
268    o pkg/mdsio:
269     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
270       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
271       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
272     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
273     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
274       either MDS_READ_FIELD or MDS_WRITE_FIELD )
275     - new S/R (to replace MDSWRITEMETA), which allows to write more
276       informations (variable names, time ...) to meta files.
277     - modify rdmds.m to give back the meta file content.
278    o pkg/diagnostics: change vertical interpolation to be safer, and more
279       flexible (define p-levels to interpolate to in data.diagnostics);
280      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
281       diagnostic pointer.
282    o pkg/seaice: more cleaning up of seaice_growth, added many comments
283    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
284    o fix multi-category seaice:
285     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
286       SEAICE_MULTICATEGORY
287     - fix short wave heat flux
288    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
289       and allow to use EVP solver. Change forward lab_sea: test both EVP
290       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
291    o Initial check-in of lab_sea adjoint
292      (very similar to natl_box_adjoint/code_seaice)
293      * used C-grid and EVP solver
294      * used KPP, GM/Redi
295      * uses inAdExact=.TRUE.
296      * gradient checks fail for both ADM and TLM
297        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
298        f.d. gradients actually seem more problematic than ADM, TLM gradients;
299        issue is related to forward mismatch between g77 an ifort
300    o pkg/seaice: overhaul of thermodynamics
301     - growth.F and groatb.F are replaced by new routine seaice_growth.F
302     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
303     - move a few global fields out of SEAICE.h into seaice_growth.F and
304       make them 2D (FICE/QNETO/ ...)
305     - remove FO (it is the same as QNETO)
306     - introduce a few local fields to avoid modifying external fields such
307       as atemp, etc.
308    
309    checkpoint58s_post
310    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
311      changed exf_set_gen.F so that
312        genperiod=0 means input file is one time-constant field and
313        genperiod=-12 means input file contains 12 monthly means
314    o CG2D: use pre-computed solver main-diagonal (stored in common block);
315      this affects truncation error ; generate new output file for exp. which
316      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
317        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
318        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
319        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
320        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
321        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
322    o start implementation of deep-atmosphere and anelastic formulation
323    o verification: remove 2nd copy of input files and use script "prepare_run"
324      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
325    o mom_common/vecinv/fluxform: fix a few initialisation isssues
326    o profiles: fix for multithreaded case
327    
328    o diagnostics: rename few diags:
329      s/'PRESSURE'/'RCENTER '/g
330      s/'TICE    '/'oceFreez'/g
331      s/'TAUX    '/'oceTAUX '/g
332      s/'TAUY    '/'oceTAUY '/g
333      s/'SWFLUX  '/'oceQsw  '/g
334      s/DIFx/DFxE/g
335      s/DIFy/DFyE/g
336      and add few ocean-forcing diagnostics:
337      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
338    o modifications to pkg/seaice/growth.F and budget.F, which change results of
339      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
340      as actual snow thickness.  It now refers everywhere to effective snow
341      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
342    
343    checkpoint58r_post
344    o modifications to pkg/seaice/growth.F, which change results of
345      lab_sea experiment: fixes pertain to melting snow over open water, to
346      masking EVAP under sea ice, and to using the correct AREA variable for
347      computations of EVAP, PRECIP, HSNOW, and GHEFF
348    o add ability to read bathy, salt, and theta using MNC (off by def)
349    o add flooding algorithm and advection of HSNOW for pkg/seaice;
350      both are turned off by default and do no change any results
351    o seaice advection with pkg/thsice: a step toward the use of non-linear
352      advection scheme, but #ifdef or commented out for now (requires more EXCH).
353    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
354      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
355      in natl_box (affects results @ truncation level: update output.txt)
356    o multi-threading and IO:
357      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
358      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
359        (needed to work with SingleCpuIO): tested in all verif. exp.
360    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
361      affects the results (but none of the verification test uses this scheme).
362    o Adding some pkg/diagnostics capability to pkg/seaice
363      (will certainly be subject to changes)
364    o ctrl: adding new control variables:
365      lwflux, lwdown, evap, snowprecip, apressure, runoff
366    
367    checkpoint58q_post
368    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
369      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
370      high_res_cube configuration by 4% on Columbia.
371    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
372      add (in global_with_exf/code) a version of EXF_INTERP_READ without
373      dynamical allocation (seems to work in multi-threaded).
374    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
375      single CPU io) so that TAF does not have to see EESUPPORT.h
376    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
377    
378    checkpoint58p_post
379    o obcs: stop if obcs is used with useCDscheme = .true.
380    o shelfice:
381     - fix a sign error so that no slip at shelfice interface works
382     - remove stop for combination non-hydrostatic code and shelfice. That does
383       not mean, that the results are correct, but at least they are numerically
384       stable
385    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
386    o added adjoint exch routined for all exch*3d* routines
387      and updated flow directives
388    
389    checkpoint58o_post
390    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
391      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
392    o change controling S/R for writing pickup file (new S/R do_write_pickup)
393      and clean-up reading/writing of pickup files.
394    o fix local version of read/write pickup (NH part) in rotating_tank/code
395    o simplify EXCH interface:
396     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
397     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
398    o added the regrid package
399    o shelfice:
400     - add a simple boundary layer scheme to reduce noise
401     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
402    
403    checkpoint58n_post
404    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
405       local variable (not in common block).
406    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
407      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
408      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
409        to work with SingleCpuIO.
410    o add "_d 0" to real constant of pkg/cfc subroutines ;
411       update exp. cfc_exemple & tutorial_cfc_offline output files.
412    o multi-threading and IO:
413      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
414        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
415      - barrier before and after reading.
416      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
417      - avoid using MDS_WRITELOCAL for LAND pkg output.
418      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
419        common-block variables ; Allows multi-threading with master-thread IO.
420    o change default MAX_NO_THREADS from 32 to 4 ;
421      and stop cleanly when MAX_NO_THREADS is too small.
422    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
423    
424    checkpoint58m_post
425    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
426       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
427    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
428       keep global_ocean.90x40x15 (for AD testing) with former secondary test
429       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
430    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
431        add MITgcm_tutorials (= code + all the tutorials)
432    o ecco, option to compute cost for total ssh (mean+anom)
433    o consistent with addition of ptracer and ssh in pkg/profiles
434    o profiles: adding ptracer and ssh
435    o testreport: change multi-test output-file name
436      (from output.txt.{name} to output.{name}.txt)
437    o profiles: now ok for mutli-tiles case
438    o seaice: add 4 parameters for different advection schemes for area,
439      (effective) seaice thickness, enthalphy, and snow height. Their default
440      is the standard parameter SEAICEadvScheme
441    o calc_gw:
442     - add cosFacU in zonal viscous flux (harmonic.visc.).
443     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
444       of tutorial_plume_on_slope.
445    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
446    o calc_gw: true flux-form, account for horizontal grid spacing.
447      update rotating_tank results, but not plume_on_slope (affected at
448      truncation level, 11 digits).
449    
450    checkpoint58l_post
451    o calc_gw:
452     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
453     - remove side-drag for now (need to fix it); update plume_on_slope results.
454     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
455    o commit code to make SST/SSS weights spatially variable
456      (based on either variable in-situ or variable initial T/S weights)
457    o pkg/ecco:
458      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
459        now based on horizontally varying weights wthetaLev, wsaltLev
460      * cost_averagesflags now returns year indices in addition to day, month
461      * sflux balance is performed on annual basis
462        (sflxumm, sfluxmm2, bal_sfluxmm)
463      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
464        including separate counting and multipliers
465    o pkg/rbcs
466      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
467    
468    checkpoint58k_post
469    o testreport:
470     - always build in dir. "build" (if not there, mkdir build instead of building
471       & running in input)
472     - run in dir run (if it exists), in build otherwise.
473     - call prepare_run (if input/prepare_run exists)
474     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
475    o pkg/exf modifications to interpolation and rotation routines for more
476       reasonable treatment of North Pole singularity: for tracers North Pole
477       value is set to northernmost zonal-mean value, for zonal velocity it is
478       set to zero, and for meridional velocity it is set to northernmost value.
479    o pkg/exf/exf_check_range.F
480     - add tile index to diagnostics and move stop statement to the very
481       end of the routine.
482    o pkg/diagnostics: (diagnostics_main_init.F)
483      define title of isomorphic variables according to the current config.
484    o pkg/thsice with pkg/seaice dynamics:
485    - fix domain of computation (interior only, required for exf) and do exchanges
486    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
487    o towards a standard way of dealing with multi-threading in MONITOR
488      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
489    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
490       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
491    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
492    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
493    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
494       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
495    o tracer advection:
496     - clean-up and simplify calc_common_factors.F
497     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
498       advection subroutine (but still not used within DST advection S/R)
499    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
500    
501    checkpoint58j_post
502    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
503      from file (collects calls previously in FORWARD_STEP)
504    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
505    o adjoint store dir. adjusted accordingly
506    o genmake2
507      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
508    
509    checkpoint58i_post
510    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
511      on wind stress (SEAICEstressFactor defaults to 1.)
512    o Total number of Timers is finite (<=40): comment out 2 non-essential one
513      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
514    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
515      on CS-grid: no longer loosing mass.
516    o exf & curvilinear-grid: no longer modify longitude xC & xG.
517    o pkg/ggl90: fix sloppy output and fix a bug
518    o pkg/seaice: added SEAICEuseEVPpickup parameter
519      - Set to false in order to start EVP solver with
520        non-EVP pickup files when using SEAICEuseEVP
521      - fix sign error in diffusion in seaice_calc_rhs
522    
523    checkpoint58h_post
524    * Modifications for bottom topography control
525      o replace hFacC by _hFacC at various places
526      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
527      o add non-self-adjoint cg2d_nsa
528      o update autodiff support routines
529      o re-initialise hfac after ctrl_depth_ini
530      o works for 5x5 box, doesnt work for global_ocean.90x40x15
531    * Adding verification for 5x5 box (4-layer) bottom topography control
532    
533    checkpoint58g_post
534    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
535       used for mean seasonal cycle, mean diurnal cycle); add an example
536       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
537    o pkg/ggl90:
538      - add parameter (minimum surface kinetic energy)
539      - fix bug (avoiding division by zero)
540    o couple pkg/thsice to pkg/seaice:
541      - modify advection in seaice to accomodate new scalar fields to be advected
542      - only muliDimAdection scheme work with seaice/thsice
543      - mapping of thsice-variables to seaice-variables, back and forth
544      - does not break the verification experiments, but does not give the
545        desired results either
546    o pkg/seaice
547      - make (default) second order advection a bit less confusing?
548    
549    checkpoint58f_post
550    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
551      to pkg/seaice):
552      - new routines thsice_map_exf and thsice_get_exf provide the interface
553      - add an additional formal parameter to thsice_solve4temp
554    o pkg/exf:
555      - add new fields wspeed, snowprecip (to be able to couple to thsice)
556      - correct Stefan-Boltzmann constant
557      - new parameter for longwave surface emittance
558      - separate some stuff from exf_bulkformulae into new routines  
559        exf_radiation, exf_wind
560      - add new parameters and constants: longwave emissivity for ocean, ice
561        and snow, evaporation parameters over ice
562      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
563        either wind from stress or stress from wind
564    o pkg/thSIce:
565    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
566    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
567       and THSICE_CALC_THICKN
568    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
569    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
570      to make debugging easier.
571    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
572    o pkg/bulk_force:
573      - clean-up comments and parameters ;
574      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
575    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
576      generate new output for test-experiment: aim.5l_cs.thSI
577    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
578      testreport accordingly
579    
580    checkpoint58e_post
581    o SEAICE_CGRID adjoint done
582    o R_STAR adjoint implemented.
583      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
584      * need to sort out init. of h0facc, etc.
585    o Make pkg/profile fully independent of ecco,cost, etc. stuff
586      to be able to use it in pure forward.
587    
588    checkpoint58d_post
589    o upgrade simple test-experiment to tutorial example:
590     step.1: duplicate the experiment and (step.2) will remove the old copy.
591      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
592      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
593      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
594      tutorial_global_oce_biogeo    <- copy of dic_example
595      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
596      tutorial_plume_on_slope       <- copy of plume_on_slope
597      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
598      tutorial_global_oce_optim     <- empty for now (David ?)
599      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
600     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
601    o correct a sign problem in cost_scat.F
602    o obcs and ptracers: fix boundary conditions for advections schemes
603      with larger stencil
604    o thsice adjoint: start
605    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
606      completeness
607    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
608      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
609    o ptracers adjoint:
610      * avoid extensive recomputatations
611      * fix missing re-init. of gptr (missed by TAF)
612    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
613      me to turn off the excessive output to STDOUT that this package produces
614    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
615      and add those terms in Vector-Invariant formulation.
616    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
617      if the control period (xx_hfluxperiod etc) is 0
618    o in profiles pkg, clean routines and fix details
619    o in ecco pkg, reading ssh data:
620      fix problem in case the model does not start at iter0=0
621    o fix mnc-pickup/restart for ptracers
622    o new package prifiles:
623      code to compute profile-based cost by Gael Forget
624      (modifs in ecco, ctrl, autodiff)
625    o Benign bug fix in initialization (spotted by M. Mazloff) of
626      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
627    
628    checkpoint58c_post
629    o adjoint: finish NLFS adjoint and provide reference output in
630      verification/global_ocean.90x40x15/results_ad_nlfs
631    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
632      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
633      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
634      with SEAICE_CGRID defined.
635    o move calendarDumps from "data" to "data.cal" and clean-up the code
636      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
637    o add useEXF & useCAL flags (for now, set in hard-coded way)
638    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
639      (were missing in NH mode, and wrong in quasihydrostatic mode).
640      waiting for Chris updated version of calc_gw to add those CALLs.
641    o fix bug in quasihydrostatic S/R ;
642      add a test for this option: global_ocean.90x40x15.qshyd
643    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
644      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
645    o add on/off flag useOffLine for package OFFLINE
646    o seaice:
647      - modify advection so that it works also on the C-grid
648      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
649        problem in multi-tile runs with C-grid
650      - add flags for clipping ice velocities and/or masking solver forcing
651      - fix drag (ocean on ice) formulation and a bug that caused noise in the
652        C-grid solver
653      - added a few comments to seaice_diffusion.F
654      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
655        are now exclusive)
656      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
657        required re-ordering the code a little:
658       + make DAIRN global variable (defined in SEAICE)
659       + move computation of the viscosities eta and zeta into a new separate
660         routine (because I need to recompute them in seaice_ocean_stress.F)
661    
662    checkpoint58b_post
663    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
664      update output.txt of exp. aim.5l_cs.thSI
665    o various mnc cleanups and improvements:
666      + shrink lookup tables by factor of ~4
667      + better error reporting when running out of lookup space
668      + able to handle longer path/file names (up to 500 chars)
669    o adjoint:
670      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
671      - TBD: "hidden" mom_vecinv recomp. in dynamics
672    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
673     (allow to differentiate between forcing components using new integer flags:
674      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
675     and add new flag to put Dissipation tendency out of Adams-Bashforth.
676    o ecco
677      - enable trend removal from SSH anomaly obs.
678    o adjoint
679      - a fix for PmEpR when #undef EXACT_CONSERV
680      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
681      - try to fix "hidden" recomp. in forward_step for NLFS
682        (NLFS seems broken sometimes after I checked it in)
683    o seaice:
684     - add c-grid version of the dynamic solver:
685       + three new routines that are the c-grid substitute lsr, dynsolver
686         and ostres
687       + put a few fields that were local to dynsolver into global common
688         blocks, so that I can move the computation of stresses etc into
689         seaice_lsr (saves coding but may break the adjoint).
690     - replace more hardwired parameters by runtime parameters
691     - add ice masks that mask the rhs of the implicit solvers where there
692       is no ice (commented out in seaice_dynsolver, because i am not sure
693       if this works properly), eventually this should replace the clipping
694       of ice velocities in seaice_dynsolver to +/-40cm/s.
695    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
696      include it only where its needed
697    o move balancing of fluxes before the call of external_forcing_surf
698    o seaice:
699      - correct units of turning angles (now they are really in degrees)
700      - move computation of GWATX/Y out of main routine into dynsolver
701      - initialize GWATX/Y in seaice_init
702    o Apply mask on Fresh-Water flux (needed for SSH forcing).
703      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
704    o seaice: add runtime flags for turning angles (default to zero)
705    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
706      and trend from exf forcing and ctrl control adjustments
707    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
708      (since checkpoint57x_post)
709    o change the default rotation period to 86164.s = the Earth rotation
710    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
711      and based on a reference stratification. Tested within hs94.cs-32x32x5.
712    o seaice advection: add code for choosing between the default (2nd order
713      central differences) and multiDim advection schemes provided by
714      pkg/generic_advdiff
715    o seaice:
716      - removed all references to SEAICE_GRID.h fields from
717        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
718        (cubed-sphere configuration will change a little)
719      - grid computations in seaice_init are obsolete now.
720      - cleaned up code a little so that is easier to read (hopefully).
721      - added new (better?) discretizations of default advection and diffusion
722        (turn on with SEAICEuseFluxForm)
723      - replace 1 in 3d global fields by kSurface in growth.F
724      
725    checkpoint58a_post
726    o seaice:
727      - bug fix in advect.F
728    o shelfice:
729      - separate shelfice load anomaly from pload (breaks with time
730        dependent forcing), => introduce constant field shelficeLoadAnomaly.
731        Its default is 0., but it may be computed more cleverly from (unknown)
732        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
733        done offline. A good approximation of the pressure load anomaly is
734        necessary to avoid large initial adjustment processes underneath
735        deep-reaching shelfice.
736      - small fix in ISOMIP shelfice_thermodynamics
737      - add more sophisticated thermodynamics of Hellmer (1989), this is
738        now the default
739      - give a few constants more intuitive names
740    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
741      if bulk formulae are used in long integration (especially EmPmR). Turn
742      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
743      if balancePrintMean, the imbalance that is substracted is printed to
744      STDOUT.
745    o fix bug (typo) in obcs_apply_eta.F
746    o add a new package shelfice which enables us to model the circulation
747      underneath shelf-ice with draughts of hundreds of meters.
748     - works
749     - to do: + include improved thermodynamics
750              + check whether kSurfC (from model/inc/SURFACE.h) can be used
751                instead of new field kTopC
752              + can we use topoFile, Ro_surf and existing code in ini_depth.F
753                instead of new field R_shelfIce and new code in ini_depth.F
754                and ini_mask_etc.F?
755              + adjust vertical mixing schemes?
756    o seaice pkg:
757     - add a cpp-flag to include a simple formula for a salinity dependent
758       freezing point of sea water at the surface
759     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
760       meridional stresses are now different (and hopefully correct)
761    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
762       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
763       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
764    o pkg/diagnostics: add options and parameters for regional-statistics
765       diagnostics ; define regions by reading a region-mask from a file
766       (might add other options later)
767    o pkg/bulk_force:
768     - add option and parameters to use AIM surface-flux formulae.
769     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
770       others forcing fields (defined in PARM05, parameter file "data") are loaded
771       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
772     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
773     - use the right EXCH call for uwind,vwind (to work on CS-grid).
774     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
775       and parameters (note: calcWindStress replaces .NOT.readwindstress).
776     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
777    
778    checkpoint58
779    o add "--embed-source" option to genmake2 which, when the supporting
780      tools can be compiled (as determined by genmake2) will turn on the
781      embed_files package which then embeds the entire MITgcm source code
782      (*.[fFhc] + Makefile) used for the build within the executable
783      - requested by CNH but off by default
784      - adds a paltry <9MB to the mitgcmuv executable in most cases
785      - only writes the output when useEMBEDSRC in eedata is true
786    o clean up 3-dim. relaxation codes:
787      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
788      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
789      * Thanks to Tom Haine for testing!
790    
791    checkpoint57z_post
792    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
793      affects output (@ truncation level) of exp. plume_on_slope ; updated.
794    o fix the pickup behavior for obcs in combination with ptracers
795    o fix a bug in ptracers_external_fields_load
796    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
797      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
798    o transfered surface NH pressure to eta field (if exactConserv).
799    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
800         and update lab_sea output.txt file.
801    o completing 3-dim. relaxation code: additional term
802         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
803      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
804      * At compile time, in "EXF_OPTIONS.h" set
805          #define  ALLOW_CLIMTEMP_RELAXATION
806          #define  ALLOW_CLIMSALT_RELAXATION
807      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
808          tauThetaClimRelax3Dim = 15552000.0,
809          tauSaltClimRelax3Dim  = 15552000.0,
810      * 3 cases:
811          1) Use a constant-in-time 3-dim. field
812          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
813          3) Real-time relax. to time-evolving prescribed field
814    o Adding Laplacian-type smoothness constraint on
815      initial and boundary (forcing) controls (ic, bc)
816      * enable at compile-time via
817        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
818      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
819      * Absolute scale somewhat unclear so far
820      * no area weighting was included since no other cost term does so far
821    
822    checkpoint57y_post
823    First step for a NLFS adjoint
824    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
825    o new init. routines for calc_r_star, calc_surf_dr
826    o still need to deal with ini_masks_etc
827    o testreport seemed happy
828    checkpoint57y_pre
829    
830    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
831    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
832    o add new offset feature to offline pkg (plus minor cleanup)
833    o cfc fixes for final year of integration
834    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
835      be in GCHEM_OPTIONS).
836    
837    checkpoint57x_post
838    o fix testreport Pb in multiple test experiment.
839    o cleanup our namelist syntax in verification:
840      - make it more F95 standards compliant (some work still needed)
841      - allows the vast majority of our tests to work with gfortran
842    o Non-Hydrostatic:
843     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
844     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
845    o Allow to apply AB on T,S rather than on AB(gT,gS):
846     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
847     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
848       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
849     - need a "clever" read_pickup to restart from the other AB formulation
850    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
851    o remove some unused variables (reduces number of compiler warnings)
852    o adjoint
853      * Disable useVariableViscosity for adjoint for time being
854        (there are a number of extensive recomputations)
855      * Initialize certain variables needed for adjoint
856    
857    checkpoint57w_post
858    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
859                 fix the singleCpuIO RS version of MDSWRITEFIELD
860       and add a WARNING if using globalFiles=T with multi-processors.
861    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
862      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
863    o tracer advection scheme:
864      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
865       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
866       was not very convenient).
867      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
868       (further tests needed for the implicit DST & Flux-Limiter schemes).
869    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
870      and sRef for convenience, handy, when you want to initialize
871      ptracers in a large domain with a constant non-zero value. Also,
872      untangle ptracers_init.F a little.
873    
874    checkpoint57v_post
875    o change dome exp. to use variable viscosity in side-drag terms.
876    o remove all the files from the cfc_offline test since they are now
877      incorporated into tutorial_cfc_offline which has been producing
878      identical results for a few days of testing
879    o add new parameter: sideDragFactor to enable half-slip-side BC
880      and change side-drag S/R to use viscosity from mom_calc_visc
881      (can switch back by setting sideDragFactor=0.); affects results at
882      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
883       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
884    o vorticity & strain are now computed without masking, to account for
885      no-slip-side BC in variable viscosity calculation ; mask is applied
886      anyway later on, before computing advection/coriolis terms.
887    o modify exp4 to test new obcs support for reading from external files
888      and for passive tracers
889    o fix behavior of ptracers_monitor when monitor output is written to a
890      netcdf-file; still not independent of monitor.F (writes in the same
891      file).
892    o change default value of tRef (put a uniform, meaningful value for ocean
893      & atmos) and initialize sRef (was missing, as Martin mentioned).
894    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
895      to be proportional to enstrophy dissipation length.  Thus,
896       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
897      This is now consistent with Smagorinsky and with the manual.
898    
899    checkpoint57u_post
900    o OBCS and PTRACERS: add open boundary support for passive tracers
901      - either use homogenous (pseudo) v.Neumann conditions or prescribe
902        OB-values from file; this is not different from the way theta and salinity
903        are treated
904      - however, Orlanski-radiation conditions are not supported, and the model
905        will stop if you use pTracers and Orlanski at the same time.
906      - beefed up the rountine obcs_external_fields_load: now only those open
907        boundary values are overwritten with values from files for which there
908        are really files, otherwise the OB-fields remain untouched. This makes
909        it possible to use different OBs at different ends of the domain (as
910        with EXF)
911    o reduce number of exch calls in shap_filt (s2).
912    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
913      truncation level) 4/5 MLAdjust test results (11&12 digits match).
914    
915    checkpoint57t_post
916    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
917    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
918      same truncation, independent of the face number: affects affects several
919      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
920    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
921      note that biharmonic viscosity + no-slip was not tested in any experiment.
922    o fix bug in non-linear free-surf side-drag ; generate new output for
923      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
924    o make mnc honor the writeBinaryPrec flag for most kinds of output
925    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
926    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
927      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
928    o add brackets in multi-terms sum to get same truncation, independent of
929      the face number (manage to get exactly same value of gU,gV at the cs-edge)
930      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
931    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
932      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
933      a maximum grid-scale Reynolds number.  Also, changes all length calculations
934      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
935      Suggested values of viscosity parameters found in mom_calc_visc.
936      Many new viscosity diagnostics available.
937    
938    checkpoint57s_post
939    o Add clearing-house for viscosity calculations, mom_calc_visc and
940      correct numerous bugs in LeithD and Smagorinsky discretizations.  
941      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
942      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
943      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
944      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
945      The Strain-Tension form is now called with useStrainTensonVisc=.true.
946      ViscAhStrain and viscAhTension are now retired.
947    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
948    o In response to JMC's bug report, genmake2 now ignores any soft-links
949      that it finds in the *current* directory when searching for files.
950      Soft-links found in any other source directories will still work as
951      they did before.
952    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
953      a C routine to unlimit the stack size
954    o mnc-ify pkg/aim snapshot vars
955    o mnc-ify pkg/land as requested by Daniel
956    o various changes to mnc including:
957      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
958      - output can now be grouped so that all files within a group
959          change the ITER portion of their names in lock-step together
960      - can now read ("global") PER-FACE (in addition to PER-TILE) files
961          and works with both EXCH1 and EXCH2 (but needs more testing)
962      - writing works for all verification test cases w/ g77 on Linux
963    
964    checkpoint57r_post
965    o make MNC variable initialization happen earlier
966    o add diagnostics for (almost) each term of the momentum Eq.
967    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
968    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
969    o remove MINIMAL_TAVE_OUTPUT option ;
970      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
971    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
972      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
973    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
974    o add time-dependent SST, SSS control
975    o cost terms in ecco/ modularized (new cost_generic.F)
976    o cost_averages routines are modularized (new cost_averagesgeneric.F)
977    o new infrastructure for seaice model vs. obs misfits in seaice/
978      * driver from the_main_loop.F is seaice_cost_driver.F
979      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
980      * gradient check in Exp. 6a of natl_box_adjoint/
981    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
982      (see README file)
983    
984    checkpoint57q_post
985    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
986    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
987      - bug was reported by Jean-Michel and Ian Fenty
988    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
989      update exp. cpl_aim+ocn output.
990    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
991      Needed for high-res. runs with large global files
992      to be able to limit tapelev size
993    o Changed some tests for adjoint:
994      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
995      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
996      * global_ocean.90x40x15/ back to default 3-level checkpointing
997    o Modifications to enable scripted COMMON to MODULE conversion
998      * verification/OpenAD/code/ has necessary scripts and description;
999      * converts, compiles and runs successfully;
1000    
1001    checkpoint57p_post
1002    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1003    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1004      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1005    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1006    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1007      (was already the case for dissipation with mom_vecinv,
1008       and also the case for grad.PhiHyd when staggered-timeStep)
1009      This will allow to put dissipation out-off the AB time-stepping.
1010     Unfortunately, affects truncation error. Update output of exp. that "fails"
1011      (cg2d matching number) and leave the others for later: front_relax(10),
1012      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1013      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1014    
1015    checkpoint57o_post
1016    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1017      (2) its ready to be documented during the 20050801 DocFest
1018    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1019      for ideal_2D_oce and lab_sea on linux_ia32_g77
1020    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1021      in global1x1_tot/code_seaice_adj to access indices 32, 33
1022      (worth another tag)
1023    
1024    checkpoint57n_post
1025    o adding precip control xx_precip 32
1026    o adding swflux control xx_swflux 33
1027    o Replacing 10 forcing penalty cost routines by 1 generic.
1028    o Implementing partitioning in time-mean and variable adjustment
1029      for atmos. state.
1030    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1031    o in natl_box_adjoint:
1032      * updated exp 1 to 10
1033        (but does not have time-mean vs. variable split results yet)
1034    o updated global1x1/*_seaice_adj/
1035      to incorporate latest changes
1036    o enable useSingleCpuIO for mdsio vector routines
1037      (applies in particular to tapelev I/O)
1038    o removed inefficient K-loop in all active_file*control*.F
1039    
1040    checkpoint57m_post
1041    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1042      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1043    o pkg/exch2: filling of face-corner halo regions is optional
1044      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1045    
1046    checkpoint57l_post
1047     tag before updating tutorials (pre-release-2)
1048    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1049       for output and interpolation of input fields onto model grid)
1050    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1051       Affects results of exp. rotating_tank ; update output.txt.
1052    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1053          and taking the square quantity and/or using a fraction-weight field.
1054    o fix aim_diagnostics_init.F mate numbers.
1055    o add mnc output capability to diagnostics/diagstat and update
1056      our cvsignore files for the ACSII output generated
1057    
1058    checkpoint57k_post
1059    o lab_sea now uses diagnostics package and provides a suite of
1060      new EXF diagnostics output.
1061    
1062    checkpoint57j_post
1063    o exf
1064      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1065        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1066        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1067      * extended diagnostics output
1068        - now includes all EXF variables
1069        - hs, hl moved to common block
1070        - separate S/R for diagnostics, called after ctrl vector is added
1071        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1072        - EXFqnet contains true Qnet (i.e. includes qsw)
1073      * updated verif. lab_sea, global_with_exf
1074      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1075        to ensure that diagnostics sees a true EXFqnet
1076    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1077    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1078      several times with different frequencies.
1079    o mnc-ify the thsice package as requested by Daniel Enderton
1080      - the monitor--MNC output needs work
1081      - many attributes need to be added (most are currently blank)
1082    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1083      - many attributes need to be added (most are currently blank)
1084    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1085    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1086    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1087      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1088         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1089    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1090     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1091    
1092    checkpoint57i_post
1093    o Diagnostics package was changed: diagnostic allocation is now deactivated
1094      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1095    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1096      add 1rst Order upwind vertical Shear.
1097    o add a quick fix for A/B checkpointing in OFFLINE mode
1098    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1099      end-run around the C/Fortran linking horror in eesup/src/timers.F
1100    o added pkg/runclock: allows user to terminate run based on wall clock
1101    o added non-hydrostatic scaling parameter: nh_am2
1102    o pkg/my82: futile attempt to make results compiler-independent by adding
1103      some "_d 0", etc. no effect.
1104    o for mnc output, fill the 'T' coordinate var with myTime and create a
1105      separate 'iter' variable for iteration count
1106    o pkg/diagnostics:
1107      add new capability: output of Global/Regional & per-level statistics ;
1108      tested against monitor output (including land & thSIce) on various exp.
1109    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1110    
1111    checkpoint57h_done
1112      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1113      data.diagnostics, data.gchem, data.ptracers) is done.
1114    
1115    o pkg/diagnostics: prepare for Global/Regional statistics.
1116      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1117    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1118      and rename it: DIFFERENT_MULTIPLE
1119    
1120    checkpoint57h_post
1121    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1122    o pkg/diagnostics: change output frequency, now in seconds (instead
1123      of Nb of iterations). This requires to change data.diagnostics.
1124    checkpoint57h_pre
1125    
1126    o in mnc, let the user create the output dir if both mnc_outdir_date
1127      and mnc_outdir_num are false
1128    o add fflags() to pkg/diagnostics which allows one to specify, on a
1129      per-file basis, the file precision [default behavior is unchanged]
1130    o added diagnostics to pkg/kpp, including computation of mixed layer
1131      depth based on a temperature/density criterion
1132    o updated verification/natl_box to test the new pkg/kpp diagnostics
1133    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1134    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1135    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1136      not mnc -- this mistake was found by JMC and is now corrected
1137    
1138    checkpoint57g_post
1139    o add Adams-Bashforth 3rd Order time stepping:
1140      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1141      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1142    checkpoint57g_pre
1143    
1144    o make lambda[Theta,Salt]ClimRelax spatially varying
1145      (default remains spatially uniform constant based on tau)
1146    o added new control variables
1147      * init. uVel, vVel, etanN
1148      * lambda[Theta,Salt]ClimRelax
1149    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1150      (suggested by G. Forget)
1151    
1152    checkpoint57f_post
1153    o add parameter "baseTime" = model base time = time at iteration zero
1154      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1155      account for baseTime shift
1156    o move Coriolis arrays from PARAMS.h to GRID.h
1157    checkpoint57f_pre
1158    
1159    o mnc-ifying the seaice package
1160    o introduced an alternative length scale calculation for use in the limiting
1161      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1162    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1163    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1164      as well as grad(vort3).  Made it compatible with both approximate form
1165      for the cubed sphere and full form of these gradients.  Added flag
1166      useFullLeith to select between approximate and full form.  
1167    o add "d0" in getcon.F to reduce differences between compilers/platforms
1168      update output.txt of exp. fizhi-gridalt-hs
1169    o change port_rand funtion to allow to set the seed.
1170    o fix obscure MNC bug involving conversion between reals and integers
1171      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1172        new version is now more standards-compliant
1173    o adjoint-related modifications
1174      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1175      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1176      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1177    
1178    checkpoint57e_post
1179    o Adding eddy stress controls a la Ferreira et al.
1180    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1181    
1182    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1183      update output.txt of exp. fizhi-gridalt-hs
1184    o add more "Z" dimensions and associated coordinate vars to MNC
1185    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1186    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1187      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1188      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1189      months and years.  Requires pkg/cal.
1190    o diagnostics: add pickup functionality
1191      - off by default for backwards compatibility
1192      - current version only uses MDSIO -- MNC will be added
1193    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1194    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1195    
1196    checkpoint57d_post
1197    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1198    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1199      output from the diagnostics package
1200    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1201    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1202      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1203    o add coordinate variables to the MNC output from the diagnostics package
1204    o change MNC-flags default value: true when useMNC=TRUE
1205    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1206      the ability (off by default) to read the grid information using MNC
1207    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1208    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1209    o do snap-shot diagnostics at the middle of the time-interval (instead of
1210      at the end).
1211    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1212      new test for AIM with thSIce + slab-ocean
1213    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1214    o move state variable diagnostics to the beginning of the time step ;
1215      (note: still needs some work specially for snap-shot diagnostics)
1216      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1217    
1218    checkpoint57c_post
1219    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1220    o generate new output.txt files on faulks with g77 & the new -ieee option
1221    checkpoint57c_pre
1222    
1223    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1224      update output.txt of exp. global_ocean.90x40x15
1225    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1226      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1227    o add saltFlux(+File) forcing capability with periodicExternalForcing
1228    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1229    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1230    o improvements for the MNC output from DIAGNOSTICS:
1231      - correct handling of the unlimitied dimension
1232      - all dims now have associated coordinate variables
1233      - variables located at U, V, and Corner ("Z") points are now written
1234        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1235        *all* data points are output
1236    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1237    o added pkg/seaice/seaice_monitor.F
1238    o mdsio_readfield.F can now read files visible only to master MPI process.
1239    o pkg/seaice: some test code for ice-modified ocean stress
1240    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1241      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1242      spurious negative numbers for precipitation and humidity.  Will cause
1243      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1244    o pkg/ctrl/
1245      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1246        May be enabled via doPackDiag
1247      *  introduce z-scaling of
1248         + gradient (doZscalePack) and
1249         + control (doZscaleUnpack)
1250    o pkg/mdsio/
1251      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1252      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1253    
1254    checkpoint57b_post
1255    o simplify options in diagnostics_fill arguments (remove weird combinations)
1256    o fix MNC coordinate variables so that they now contain per-face index
1257      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1258      general, EXCH2 grids are only aligned to a "local" coordinate system
1259    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1260    o Implement instantaneous output within pkg diagnostics:
1261      setting a negative frequency in data.diagnostics produces
1262     "snap-shot" output (as opposed to time-average if freq > 0)
1263    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1264      NOTE: change ptracer diagnostics name: use 2 characters to work with
1265            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1266    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1267      becomes the coordinate variable for the 'T' dimension
1268    o add CF-style coordinate variables to MNC
1269      - just a first cut:  numbers are meaningless on the cubesphere and
1270        missing along the T axis but otherwise it works!
1271    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1272    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1273    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1274      this is based directly on what the model compute, so that the content of
1275      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1276    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1277    o clean up build options files for SunOS, in particular
1278      - remove -traditional from xmakedepend
1279      - change -xarch=v9 to -xarch=native for f77
1280      - restore use of make (not gmake)
1281      - add CC=gcc if using g77
1282    o changes per discussion of AM, JMC, & EH3 today:
1283      - move redundant "grid" variables out of "state" -- in preparation of
1284        creating proper CF-style coordinate variables and in recognition
1285        that any/all grid variables can be easily copied (eg. w/NCO) from
1286        the grid files into any of the other NetCDF files
1287      - *always* output grid variables with MDSIO (this will eventually be
1288        changed)
1289      - output MNC grid file if useMNC is true
1290    o every instance of _END_MASTER() has been found and replaced with
1291      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1292      preprocessors
1293    o re-arrange diagnostics pkg initialisation:
1294     - allow each package to extend the available diagnostics list
1295     - add some checking and fix small problems (multi-threaded, ...)
1296     - new S/R diagnostics_fill (replace fill_diagnostics):
1297       look through the short list of active diag. (instead of the long list)
1298       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1299    
1300    checkpoint57a_post
1301    o this set of changes restores TAMC compatibility
1302      tested for global_ocean.90x40x15 adjoint on trough
1303      (what a pain)
1304    
1305    checkpoint57a_pre
1306    o some modifs in tools/build_options for sunos
1307    o call ctrl_pack for ctrl at end for optimcycle=0
1308    
1309    checkpoint57
1310    o add horizontal bi-harmonic viscosity for vertical velocity
1311      - new parameter viscA4W (defaults to viscA4)
1312      - affects only non-hydrostatic code
1313      - to be done: no-slip lateral boundary conditions
1314    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1315    o implement Implicit Vertical advection for pTracers
1316    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1317      (implemented also for implicit vertical diffusion & advection)
1318    o OBCS: extend application of tracer open boundary conditions
1319      to a strip beyond the boundary of width Olx/Oly
1320    o add call monitor to TAF set of required calls (flow directives)
1321      and include in natl_box_adjoint
1322    o untangle a few ifdefs related to cost, ctrl, autodiff
1323      untangel a few ALLOW_ECCO_OPTIMIZATION
1324    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1325      (theta2, salt2 in ecco_cost_weights)
1326    
1327    checkpoint56c_post
1328    o OBCS as control variables
1329      - update ctrl_ad_diff.list, obcs_ad_diff.list
1330      - remove balance of obcs controls from default
1331      - fix index bug nobcs in ctrl_init
1332      - fix dummy fields filen in ctrl_pack
1333      - add dummy weights for obcs
1334    o lsopt: comment out fort.94 output
1335    o optim:
1336      - remove unnecessary header files
1337      - adjusted namelists
1338      - add xerbla.F to Makefile
1339    o exf:
1340      - multiple modifications of exf_check_range
1341      - unit change in exf_init_runoff from [m/year] to [m/s]
1342    o mdsio:
1343      - i/o-vector change debugLevel from debLevA to debLevB
1344    
1345    checkpoint56b_post
1346    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1347      is called from DO_THE_MODEL_IO
1348      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1349      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1350      - clean up PTRACERS_WRITE_TIMEAVE a little
1351    o add another verification experiment that tests both the cfc-pkg and
1352      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1353      reactive tendencies treated inline with regular timestepping
1354    o testreport previously did a lousy job of comparing small numbers, so
1355      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1356      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1357      testreport.
1358    o ptracers_monitor: bug fix for MPI
1359    
1360    checkpoint56a_post
1361    o GCHEM: finish reorganizating the package
1362      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1363        (introduces another 3D-array for each passive tracer, but only if
1364        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1365        gchemTendency is not needed because the timestep is done separately)
1366      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1367      - GCHEM is now---more or less cleanly---separate from PTRACERS
1368      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1369        so clear to me how that should be done in a general way.
1370    o CFC: improve formatting of output in CFC_ATMOS
1371    o PTRACERS:
1372      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1373        that ALL experiments with ptracers enable can be checked. This makes
1374        GCHEM_MONITOR obsolete.
1375      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1376        monitorFreq
1377      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1378    o add PTRACERS (PTR0[1-5]) to testreport output
1379    o exf_check_range:
1380      * default changed to .TRUE.
1381      * will check values for niter0 if debLevA, every timestep if debLevB
1382      * STOP in exf_check_range if 'out of range'
1383      * range chosen generous to allow for potential extema
1384      TBD: a version with stricter range
1385           permitted range would be runtime parameters
1386    o GMredi:
1387      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1388      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1389      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1390    o GCHEM:
1391      - move call to GCHEM_FORCING_SEP, so that it is now called before
1392        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1393      - introduced a useGCHEM runtime flag and applied it everywhere.
1394      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1395        this flag is now only visible within GCHEM-pkg routines.
1396      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1397        be replaced by a 3D array that is computed before thermodynamics; for
1398        this, the tracer ID iTracer had to be included into the parameter list
1399        of ptracers_forcing
1400      - set up forward_step to call gchem_forcing, that will replace
1401        gchem_forcing_int in ptracers_forcing
1402      - cleaning up
1403    o small cleaning of exch2: remove files that are also in eesupp/src
1404    
1405    checkpoint56
1406    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1407    o mnc: cleanup "full" files--fixes out-of-memory problem
1408    o ECCO-GODAE
1409      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1410      * fully merged and updated from SIO code
1411        windstress sign change affects
1412        - exf_inscal_[u/v]stress
1413        - sign of xx_tau[u/v] adjustments
1414        - signs in cost_scat
1415      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1416      * natl_box_adjoint updated and compressed
1417      * 2-level checkpoint switch added
1418        (tested in EXP. 1 of natl_box_adjoint)
1419      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1420    o SVD
1421      * first complete, non-hacked version for SVD calculations
1422      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1423        performed via direct access files admtlm_vector.it????
1424        (via ctrl_[un]pack)
1425      * optimcycle is used for ARPACK iteration counter
1426        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1427      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1428        and add linear transforms where necessary
1429      * controls are initial/final SST, SSS (can be extended; need to check
1430        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1431    o mdsio: filename info to both stderr, stdout
1432    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1433      from sign change
1434    
1435    checkpoint55j_post
1436    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1437      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1438    o add consistent build directories and .cvsignore files to verification
1439    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1440    o make all subroutines 30 or less characters in length for certain older
1441      compilers to work (a thorough search only turns up two routines in
1442      pkg/ptracers)
1443    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1444      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1445    
1446    checkpoint55i_post
1447    o change arrays for total vertical diffusivity (2.D if explicit,
1448      3.D if implicit) ; each ptracer uses its own background value.
1449    o added mnc/NetCDF output capability to ocn_compon_interf
1450      - added bits to verification/cpl_aim+ocn so that it can run on
1451        ITRDA and other clusters without the mpirun "-wd" option
1452    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1453      configuration
1454    o give MNC the ability to create additional files rather than
1455      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1456      - the default is just less than 2GB which is a practical limit
1457        on many systems
1458    o Compute the non-local term using either KPP vertical diffusivity (=default)
1459       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1460    
1461    checkpoint55h_post
1462    o add verification test "vermix"
1463    o remove all the *_ioinc flags and replace with the single global
1464      outputTypesInclusive flag
1465    o allow to set a vertical profile of vertical diffusivity for T & S
1466    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1467    o useMNC moved from data.mnc to data.pkg
1468    
1469    checkpoint55g_post
1470    o Renaming carbon AD experiments to comply with testreport conventions
1471    o Updating adjoint of Held-Suarez hs94.1x64x5
1472    o Fixing directives for non-ECCO forward_step, after ECCO directives
1473      have been fixed to avoid recomp. of do_oceanic_phys
1474      Works well for global_ocean.90x40x15,
1475      but recomp. issue remains for carbon
1476    o Updating adjoint output for natl_box_adjoint after
1477      pkg/ecco has been modified (see taga c55d_post)
1478    
1479    checkpoint55f_post
1480    o rename to timeave_init_fixed
1481    
1482    checkpoint55e_post
1483    o some delicate re-shuffle of store directives to avoid one
1484      extra call of do_oceanic_physics
1485      affects ecco_the_main_loop.F, do_oceanic_physics.F
1486      checkpoint_lev1_directives.h
1487    o NB: this may break global_ocean adjoint temporarily,
1488      but it is clear how to fix it. Will do later, need this now.
1489    
1490    checkpoint55d_post
1491    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1492    o ecco_cost_weights is modified to 1x1 runs
1493    o modifs to allow observations to be read in as
1494      single file or yearly files
1495    o enable to read exf forcing fields as either
1496      single file or yearly files (flag useExfYearlyFields)
1497    checkpoint55d_pre
1498    
1499    o switch between 2-level and 3-level checkpointing
1500    o add ability of MNC to write local and "partial" (eg. 2D slices where
1501      the full 3D field is never actually stored) arrays to NetCDF files
1502      with the correct (that is, the complete multi-dimensional) set of
1503      array indicies
1504      - used in mom_vecinv() to write the diagFreq output
1505      - tested (demonstrated) in verification/aim.5l_cs
1506    o further mnc-ification
1507      - add verification/lab_sea to the list with mnc setups
1508      - fix undefined mnc v-names in cd_code
1509      - add kpp to mnc output (both snapshot and timeave)
1510    o non-hydrostatic code
1511      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1512        in calc_gw.F
1513      - defaults to viscAh
1514      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1515        friction or Leith) in non-hydrostatic mode, as long as there is
1516        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1517    o pkg/cost
1518      extend simple cost functions to treat time mean quantities
1519      (T,U,V) via cost_accumulate_state from cost_tile
1520    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1521        be 2 times larger than the minimum size the advection scheme requires.
1522        now get a perfect conservation of salt in advect_cs test-exp (updated)
1523    o GGL90 (Gaspar's TKE mixed layer)
1524      - add horizontal diffusion of TKE, requires exchanges in
1525        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1526        default. In OPA there is no horizontal diffusion of TKE but the
1527        mixing coefficients are computed from a horizontal average of TKE of
1528        6 points or so. I think that diffusion has a little more physical
1529        justification.
1530      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1531        was in vain)
1532      - mask tke-variable in ggl90_init
1533    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1534    o fix biharmonic diffusion on CS-grid.
1535    o more obcs stuff
1536      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1537        for reading boundary values. This routine is called from
1538        obcs_prescribe_read
1539      - updated obcs_check
1540      - changed sponge layer relaxation parameter units for days to seconds
1541      - turned off sponge layer by default
1542      - changed argument list of OBCS_CALC to myTime+deltaTclock
1543      - fixed about 35 bugs in obcs_external_fields_load
1544    
1545    checkpoint55c_post
1546    o obcs stuff
1547      - new runtime flags useOBCSprescribe, useOBCSbalance
1548      - re-arranged obcs_calc
1549      - moved exf_getobcs to obcs_prescibe_read
1550        obcs_prescibe_read is called after ORLANSKI stuff
1551        and independent of it (executable can contain all).
1552      - updated obcs_check
1553      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1554        These may be necessary only if tangential velocities are
1555        prescribed at OB, not sure, needs testing.
1556    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1557      which simplifies the calls and passes the ifc check-bounds test
1558    
1559    checkpoint55b_post
1560    o add a 2D scalar, Z location, exchange_2 routine.
1561    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1562      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1563      affects advect_cs results (for the wrong reason): update output.txt
1564    o use a more standard discretization for biharmonic viscosity ;
1565     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1566      affects results of dome set-up: update output.txt
1567    o fix gad_advection.F (CubedSphere part), back to version 1.23
1568    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1569    
1570    checkpoint55a_post
1571    o merged code to
1572      * prescribe/read time-dependent open boundaries
1573        (works in conjunction with exf, cal)
1574      * sponge layer code for open boundaries
1575      * each boundary N/S/E/W now has its own CPP option
1576        (healthy for the adjoint)
1577    
1578    checkpoint55
1579    o up-to-date adjoint of previous breaks
1580      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1581      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1582      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1583      - carbon: * remove tr1-related adjoint verification
1584                * add ptracer as control variable
1585    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1586      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1587    
1588    checkpoint54f_post
1589    o in verification/carbin/ remove experiment related to
1590      ALLOW_PASSIVE_TRACER (array tr1 etc)
1591      code_ad/ input_ad/ results_ad
1592    
1593    o add two new packages
1594      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1595        + subject to optimization (memory)
1596      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1597        + subject to reordering (many GOTOs in the original code)
1598        + so far opps is called for every (i,j) point, and then operates in
1599          the vertical; one may want to reorder the scheme in order operate in
1600          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1601          fields)
1602    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1603      - all verification tests compile and run with linux_ia32_g77
1604      - defaults are compatible with current input files--nothing
1605        should change if you were not previously using MNC
1606      - MNC output has been added in numerous places (eg. timeave)
1607        but there are still a few writes not yet do-able with MNC
1608        (this is in progress)
1609      - flags now allow for either/or/both use of MDSIO and MNC and
1610        documentation will soon follow
1611      - numerous small formatting cleanups for ProTeX
1612    o add version info (via BUILD_INFO.h) to MNC and stdout
1613    
1614    checkpoint54e_post
1615    o add two new packages
1616      - pp81 (Packanowski and Philander, 1981), Richardson number and
1617        stratification dependent mixing
1618      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1619      - these scheme operate in a similar manner as KPP (without ghat, of
1620        course), however there is only one diffusivity that is used for both
1621        temperature and salinity (and passive tracers)ç
1622    o add offline package
1623    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1624      provided by Stephanie Dutkiewicz
1625    o genmake2: add ability to search for C compilers and cleanup test output
1626      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1627    
1628    checkpoint54d_post
1629    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1630    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1631      leading to additional shift by 5 days each year of integration
1632       (i.e. leading to considerable offset over the years)
1633    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1634    o start with no AB and no initial filtering (staggerTimeStep):
1635      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1636    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1637      (external loading & cpl import/export stay in forward_step.F)
1638    o update coupling interface to work with new staggerTimeStep
1639    o change MDSIO ptracers_pickup.
1640    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1641    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1642    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1643    
1644    checkpoint54c_post
1645    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1646      this affects (truncation error) output.txt of test-exp:
1647       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1648    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1649    o change Qnet to always be the net heat flux, (+upward).
1650      affects (truncation error) output of natl_box exp.: updated
1651    o define the max number of passive tracers in PTRACERS_SIZE.h
1652    o start to test mnc routinely in exp0
1653    o add sea-ice loading (sIceLoad) as a new forcing field.
1654    
1655    checkpoint54b_post
1656    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1657       impressive on Altix and Opteron systems)
1658    o diagnostics can now write NetCDF files through the mnc package
1659    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1660    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1661    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1662      affects (truncation error) output of lab_sea & natl_box exp.: updated
1663    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1664    
1665    checkpoint54a_post
1666    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1667    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1668    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1669    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1670      + internal_wave (shift in writing cg2d_ini_res)
1671    checkpoint54a_pre
1672    
1673    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1674      - modified verification/lab_sea and natl_box_adjoint accordingly
1675    
1676    checkpoint54
1677    checkpoint53g_post
1678    o prepare splitting of thermodynamics: store convect.counter in common block
1679    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1680      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1681    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1682    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1683    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1684    o restore adjointability
1685    
1686    checkpoint53f_post
1687    o modifications that affect AIM experiment results (update output.txt):
1688      - no advection of S at top interface Nr (pkg/generic_advdiff)
1689      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1690    o AIM pkg:
1691      - include stability function into surf.Flux derivative relative to Tsurf
1692      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1693    
1694    checkpoint53e_post
1695    o merged cylindrical coord configuration
1696    o added rotating_tank experiment
1697    checkpoint53e_pre
1698    
1699    checkpoint53d_post
1700    o faulks upgraded: re-generate output.txt that have changed:
1701       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1702    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1703    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1704    o added Sadourny discretization of Coriolis
1705      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1706      - re-enabled use of omega3 (useAbsVorticity)
1707    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1708      vector-invariant equations
1709      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1710    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1711      hopefully without new bugs
1712      - still to do: biharmonic friction for non-hydrostatic w
1713    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1714    o regenerated output for global_ocean_ebm (using -ieee)
1715    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1716      of mom_common/
1717      - simple re-arrangement of instructions within computing loop
1718    checkpoint53d_pre
1719    
1720    checkpoint53c_post
1721    o new version of coupler for AIM+thSIce and Ocean models
1722     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1723     - land: change Evaporation of snow
1724     - aim with thSIce: fix bug in snow-precip.
1725    o changes to calc_gw.F
1726     - bug fix for w^2 term near the bottom boundary
1727     - (hopefully) improve the lateral slip boundary condtions for use with
1728        partial/looped cells
1729      - because the bug fix changes two verification experiments anyway (exp5
1730        and plume on slope), change the lateral boundary condition from half slip
1731        to the value of no_slip_sides
1732    o ebm package wasnt quite up to the parallel task. Fixed that.
1733    o Adjoint of EBM package + verification
1734      * TLM OK
1735      * ADM not sufficient accuracy yet (needs further testing)
1736    
1737    checkpoint53b_post
1738    o Commiting new energy balance model to repository
1739      * package is pkg/ebm
1740      * verif. is verification/global_ocean_ebm
1741      * references are in ebm_driver.F
1742    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1743    C        Global thermohaline circulation. Part I:
1744    C        Sensitivity to atmospheric moisture transport.
1745    C        J. Climate 12(1), 71-82
1746    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1747    C        Global thermohaline circulation. Part II:
1748    C        Sensitivity with interactive transport.
1749    C        J. Climate 12(1), 83-91
1750    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1751    C        Destabilization of the thermohaline circulation
1752    C        by atmospheric eddy transports.
1753    C        J. Climate 7(12), 1870-1882
1754    o Will need long integration testing.
1755    checkpoint53b_pre
1756    
1757    o created pkg/mom_common in preparation for variable viscosity code
1758    o renamed and split ini_mnc_io
1759    o pkg/land: only liquid water can diffuse or run-off
1760    o AIM using land: soil wetness availability account for snow
1761    o added printMapIncludesZeros to EEPARMS namelist
1762    
1763    checkpoint53a_post
1764    o restore TAMC compatiility for exf_constants.h
1765      (no usage of _d in .h)
1766    o Additional storing in KPP in an attempt to fix
1767      TAMC problem with adjoint of KPP code.
1768      (no success...)
1769      Identical code works fine with TAF.
1770    o Fixed verification/natl_box_adjoint experiments.
1771      Initial conditions for Experiments 4 and 5 are now
1772      set to "SEAICE_initialHEFF=0", which is more reasonable,
1773      and hence gives results closer to that of Experiment 2.
1774      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1775    
1776    checkpoint53
1777    o stable checkpoint with up to date adjoint
1778      TLM tests only run for 1st grdchk at the moment. Its unclear if
1779      this is a code problem or a problem with resetting code for g_
1780      variables that is being autogenerated wrong.
1781      Otherwise:
1782       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1783       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1784         are both still in chaos following their security messes.
1785    
1786    checkpoint52n_post
1787    o various build (mostly genmake2) changes including:
1788      - ability to build/run more easily within Cygwin and MacOS X
1789      - more complicated Makefiles with a stronger dependence on Gnu Make
1790    o pkg/seaice modifications
1791      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1792        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1793        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1794      - changed proxy for geostrophic velocity and updated
1795        verification/lab_sea/results/* accordingly
1796      - removed ADI dynamic solver from pkg/seaice
1797      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1798        they caused a segmentation fault under certain circumstances
1799      - removed unused field WATR
1800    o bug fix in exf-package:
1801      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1802         now reflect that.
1803    o small fixes in the cal-package:
1804      - set reference date to first of January for the 'model'-calendar
1805      - failing of cal_CheckDate in cal_FullDate now actually results in a
1806        warning
1807    o small modifications in exf-package to increase flexibility:
1808      - change climtempfreeze from a constant to a runtime parameter that
1809        is specified in data.exf_clim (default = -1.9)
1810      - introduce runtime parameter windstressmax (default = 2.0) that is
1811        specified in data.exf
1812    o fix in pkg/thsice:
1813      - update Evap (Tsf changes) to be consistent with Latent heat flux
1814      - maintain snow precipitation unchanged (even if Tsf >=0).
1815     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1816    
1817    checkpoint52m_post
1818    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1819      this does not change any of the results, because myIter=0 in swfrac always
1820      lead to jwtype=2 (the default anyway), but the call makes little sense
1821      as a default
1822    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1823    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1824      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1825    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1826    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1827    o extending useSingleCpuIO option to work with new exch2 I/O format
1828      - old-style, missing-tile I/O is still accessible by defining CPP
1829        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1830    o monitor package can write to NetCDF files and/or STDOUT
1831    o fix re-definition bug in MNC_GRID_INIT_ALL()
1832    o doc/api_reference added
1833      - a framework for building an API Reference Manual using all
1834        the "protex" comments embedded in the code
1835      - see pkg/generic_advdiff, pkg/mnc for examples
1836  o MNC:  o MNC:
1837    - make myThid the last argument for all subroutines    - make myThid the last argument for all subroutines
1838    - new default for the grid files: NO halos    - new default for the grid files: NO halos

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