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revision 1.198 by edhill, Tue Oct 28 22:57:59 2003 UTC revision 1.843 by jmc, Thu Jun 21 00:56:25 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    checkpoint59d
8    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
9     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
10     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
11    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
12     and change default value of parameter "GM_Small_Number";
13     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
14       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
15       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
16    o pkg/ecco: cost function when applying pkg/smooth to controls
17    o pkg/ctrl: add forcingPrecond run time parameter
18    o pkg/seaice:
19     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
20     - fix bug in metric terms of u-equation in LSR solver (implicit part),
21       changes verification/lab_sea
22     - rearrange implicit part of u-equation in LSR solver to make it easier to
23       read, understand, and debug. This causes changes at the truncation level.
24     - fix (serious) bug in the boundary conditions (sign error in the implicit
25       part) of the LSR solver. Changes all LSR results.
26     - fixed problem with HSNOW initialization to avoid thick snow when AREA
27       is initilized with small values - does not change lab_sea results.
28     - added HsnowFile initialization capability
29    o pkg/smooth: addition to model/src and pkg/ctrl so allow
30     initialization of pkg/smooth and application to control vector
31    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
32    o dependencies: pkg/profiles requires pkg/cal
33    o pkg/profiles:
34     - added option ALLOW_PROFILES_GENERICGRID
35         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
36         that interpolation information (grid points and coefficients) is provided
37         within the netcdf input files.
38         -> sample matlab scripts can be found in MITgcm_contrib/gael
39         that allow you to prepare netcdf input files.
40     - also modified: cleaner include statements, cleaner error print statements,
41       cleaner stops when error, and more tests of the netcdf input files consistency.
42    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
43    o pkg/seaice:
44     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
45       requires a new routine: seaice_diagnostics_fill.F
46     - make sure that seaice does not move if not forced (pressure replacement
47       method, Hibler and Ip, 1995), changes results
48     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
49     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
50       It is turned off by default (=-1.), because it changes the results.
51     - make it possible to read AREA from a file, too.
52    
53    checkpoint59c
54    o add S/R and diagnostics for oceanic mixed-layer depth
55    o move GMRedi call after all vertical mixing schemes (including KPP)
56    o pkg/thsice:
57     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
58      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
59    o pkg/obcs:
60     - bug fix for balance code
61    o pkg/seaice:
62      - allow values of SEAICE_elasticParm > 1
63      - add new parameter SEAICE_evpTauRelax as an alternative
64        to SEAICE_elasticParm
65      - make lsr boundary conditions free slip (by default), changes result
66      - add code for no slip boundary conditions for lsr
67      - set minimum of zeta to zero (and not 4e8) (changes results)
68      - add a cap on AREA after advecting AREA if seaice_growth is not called
69    o change calculation of Visbeck K:
70      - no longer depend on tapering scheme; instead, compute slope (limited
71        by GM_maxSlope). this is equivalent to what was comuted before with
72        clipping or linear tappering.
73      - fix vertical averaging (wrong by 1/2 level)
74      - leave the old version (but will not be maintained) within
75        #ifdef OLD_VISBECK_CALC / #endif
76      - update output of exp. ideal_2D_oce
77    o change error catch in calc_r_star to improve vectorization
78    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
79      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
80    o adjoint:
81      Re-organized adjoint checkpointing according to Matt Mazloff
82      (but with modifs/completions/cleanups)
83      Storing is now bundled into large arrays to optimized I/O
84      (and second step in cleanup of the_main_loop)
85    
86    checkpoint59b
87    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
88      - export/import (between ocean & coupler) fields needed for ocean DIC.
89    o pkg/seaice:
90      - get rid of three more exchanges seaice_calc_viscosities (required
91        different loop boundaries in seaice_lsr and seaice_ocean_stress)
92      - bug fix in seaice_ocean_stress (update of lab_sea required)
93      - reduce loop boundaries to necessary minimum also in seaice_evp
94      - go back to the old way of computing deltaC/Z as the adjoint likes that
95        better
96    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
97      passive tracer to an Age Tracer) + update output.txt
98    o pkg/exf:
99      - implement A-grid / C-grid selection for wind-stress input files.
100      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
101      for now, in exf_bulk_largeyeager04.F only :
102      - change implementation for case where windspeed + 2. components wind-stress
103        are read-in. AND use rhoConstFresh to convert evap.
104    o pkg/seaice:
105      - use correct EXCH_UV for wind-forcing (on A-grid).
106      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
107        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
108    o pkg/exf:
109      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
110      EXF_INTERPOLATION:
111      - merge global_with_exf/code version of exf_interp_read.F
112        to the main code ;
113      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
114        reading the file ; Important: This options needs to be defined to recover
115        previous code.
116        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
117      - no longer loose real*8 precision along the way when using exf_iprec=64.
118    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
119      - change discretisation of evp-solver in order to avoid another exchange
120        (changes lab_sea) and clean up a little
121      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
122        help the adjoint (this also changes the results slightly)
123      - add a few "_d 0" where they had been missing in seaice_evp.F
124      - cleaning up: remove unused seaice_calc_rhs.F
125    o pkg/exf: some cleaning-up:
126      - change various "constants" into runtime parameters
127      - cleaned-up Large&Yeager04 routine which should eventually
128        replace exf_bulkformulae.F (changed names of S/R and CPP)
129        and merged various ALLOW_ATM_WIND options
130     only used with thsice pkg (in thsice_get_exf.F):
131      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
132        which are used when useStabilityFct_overIce=TRUE (= the default)
133      - change default values of ice & snow emissivity and scale downward LW
134        by ice & snow emissivity.
135    o pkg/thsice:
136     fix few little problems, in thsice_calc_thickn.F:
137      - growth vertically (and not laterally) if iceFrac == iceMaskMax
138      - melt only laterally if hIce < hThinIce (as the comments say)
139      and in thsice_extend.F:
140      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
141      - start to form ice as soon as the minimum ice-volume is reachable.
142     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
143      and cpl_aim+ocn
144    o pkg/kpp
145     - move computation of surface related input fields to KPP into a new
146       subroutine kpp_forcing_surf.F
147     - remove wrong (within bi,bj loops) EXCH calls.
148     - little cleaning (add argument myThid in last position, cvs header ...)
149     - for now, fix conservation problem by exchanging KPPviscAz (may not
150       be the best fix)
151    o pkg/seaice
152     - check for inconsistent evp parameter/cpp-flag combination
153     - remove leftover errIO flat for obsolete name list error handling
154    o OpenAD
155     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
156    
157    checkpoint59a
158    o pkg/seaice: some parameter clarifications and a little bit of clean up
159    o pkg/thsice: rename run-time parameters:
160       himin       -> hIceMin
161       himin0      -> hThinIce
162       hihig       -> hThickIce
163       i0          -> i0swFrac
164       transCoef   -> bMeltCoef
165       frac_energy -> fracMelting
166      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
167       with default values (for now) that do not change the results.
168      remove old version of thsice vars advection in pkg/seaice.
169    o in FFIELDS.h:
170      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
171      - make pLoad & sIceLoad always available (but still only used if
172         ATMOSPHERIC_LOADING is #define).
173    o pkg/kpp: replaced _KPP_RL with _RL
174    o bug fixes for vertical diffusivity computations when both KPP and
175        3D diffusivity arrays are used.
176    o pkg/seaice: fix bug in evp solver, while doing that
177      - change (improve?) discretization of stress computations for both
178        cgrid-lsr and evp solver
179      - add a new routine to compute strain rates
180      - the above changes lab_sea results
181      - add no slip conditions for evp solver (off by default), lsr-version
182        may follow
183      - fix exchange for shear at Z-points (does not change lab_sea)
184      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
185        (to force the user to pick a time step since there is not "safe" way
186        of choosing it)
187      - add principal stress diagnostics
188      - rearrange fields for evp a little to avoid having to call a: too many
189        exchanges and b: exchanges for stress trensor components which we do
190        not have.
191      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
192        of evp, complete rewrite for lsr case (latter is does not yet work
193        in all cases)
194    o pkg/kpp: add code to have mixing in shelf ice caverns
195      - add myThid to all kpp routines (long overdue)
196    
197    checkpoint59
198    o pkg/exf:
199      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
200        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
201      - move exf header files from lower_case.h to UPPER_CASE.h ;
202        add missing cvs Header & Name
203      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
204      - add namelist param. selectStressGridPosition, exf_monFreq
205      - retire many _CLIM routines, and remove data.exf_clim
206        + params moved to data.exf
207        + climsst, climsss now handled by exf_set_gen, i.e.
208          climss?period=0 refers to constant field,
209          climss?period=-12 to monthly forcing
210      - split up namelists in data.exf
211    o pkg/seaice:
212      - remove seaice_exch and seaice_exch_uv
213      - remove superfluous exchange of theta
214      - add myThid to seaice_budget_ocean/ice
215      - add new interface for atmospheric wind forcing (C-grid only)
216        + new routine
217        + two new field (taux, tauy for stress over ice)
218        + removed one global field (DAIRN) for C-grid case only
219    o pkg/thsise
220      - 2nd set of modifs for thsice adjoint in conjunction with exf
221    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
222    
223    checkpoint58y_post
224    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
225      vertical diffusivity, similar to that in MOM4; turned on using
226      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
227      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
228    o Added capability for 3D specification of background vertical diffusion
229      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
230      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
231      "data" file that contains the 3D vertical diffusivity coefficients.
232    o ice dynamics (pkg/seaice) with thsice thermodynamics:
233      - add code within pkg thsice to advect & diffuse sea-ice fields
234      similar to (and will replace) what has been added in  seaice_advdiff.F,
235      but: - conserving Mass, Heat & Salt.
236           - better when using non-linear advection scheme (not yet fully tested)
237           - can also be used in atmospheric set-up (for now, only the diffusion).
238    
239    checkpoint58x_post
240    o IO option for global-file compact format:
241      - add options when generating topology (utils/exch2/matlab-topology-generator)
242      - add I/O capability (pkg/mdsio).
243      - adapt utils/matlab/rdmds.m to read this format.
244      for now long-line format not yet supported by pkg/mdsio (& exch2).
245    o shelfice: add a few diagnostics
246    
247    checkpoint58w_post
248    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
249      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
250      (and replace horiVertRatio in NH code).
251      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
252                         and tutorial_plume_on_slope (sensitive to truncation)
253    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
254      directly to drive seaice model (C-grid only)
255    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
256     - reintroduce computation of wind from stress,
257     - compute tau (in exf_bulkformulae.F) from windstress averaged to
258       mass points to avoid tau = 0
259     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
260    o rdmnc.m: make it work with "global" files created with gluemnc
261    o rdmnc.m : some improvements in dealing with singleton dimension
262      (tested on all testreport mnc output files).
263    o genmake2: disable pkg/profiles if netcdf test fails.
264    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
265    o move call to cal_readparms up to make calendar parameters/variable available
266      to all packages
267    
268    checkpoint58v_post
269    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
270      useDynP_inEos_Zc tested.
271    o pkg/exf: changes to properly interpolate/mask/scale initial fields
272    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
273      and portions thereof.  See read_cs.txt for description and examples.
274    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
275      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
276      following the great-circle arc between those 2 points.
277    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
278      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
279    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
280     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
281     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
282     - still needs work (not working with some options ; efficiency to improve)
283       and serious testing.
284     - use this scheme for temperature & salinity in 2 advection test exp.:
285       advect_xy & advect_xz, respectively.
286    
287    checkpoint58u_post
288    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
289    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
290    o testreport: add option "-skipdir" to skip some test.
291    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
292      momentum calculation.
293    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
294    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
295      remove checkpoint.F and the_correction_step.F (no longer used);
296      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
297    o add option (linFSConserveTr) to correct for tracer source/sink due to
298      Linear Free surface
299    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
300    o pkg/thsice: fix reading mnc-pickups
301    
302    checkpoint58t_post
303    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
304    o pkg/mdsio:
305     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
306       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
307       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
308     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
309     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
310       either MDS_READ_FIELD or MDS_WRITE_FIELD )
311     - new S/R (to replace MDSWRITEMETA), which allows to write more
312       informations (variable names, time ...) to meta files.
313     - modify rdmds.m to give back the meta file content.
314    o pkg/diagnostics: change vertical interpolation to be safer, and more
315       flexible (define p-levels to interpolate to in data.diagnostics);
316      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
317       diagnostic pointer.
318    o pkg/seaice: more cleaning up of seaice_growth, added many comments
319    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
320    o fix multi-category seaice:
321     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
322       SEAICE_MULTICATEGORY
323     - fix short wave heat flux
324    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
325       and allow to use EVP solver. Change forward lab_sea: test both EVP
326       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
327    o Initial check-in of lab_sea adjoint
328      (very similar to natl_box_adjoint/code_seaice)
329      * used C-grid and EVP solver
330      * used KPP, GM/Redi
331      * uses inAdExact=.TRUE.
332      * gradient checks fail for both ADM and TLM
333        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
334        f.d. gradients actually seem more problematic than ADM, TLM gradients;
335        issue is related to forward mismatch between g77 an ifort
336    o pkg/seaice: overhaul of thermodynamics
337     - growth.F and groatb.F are replaced by new routine seaice_growth.F
338     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
339     - move a few global fields out of SEAICE.h into seaice_growth.F and
340       make them 2D (FICE/QNETO/ ...)
341     - remove FO (it is the same as QNETO)
342     - introduce a few local fields to avoid modifying external fields such
343       as atemp, etc.
344    
345    checkpoint58s_post
346    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
347      changed exf_set_gen.F so that
348        genperiod=0 means input file is one time-constant field and
349        genperiod=-12 means input file contains 12 monthly means
350    o CG2D: use pre-computed solver main-diagonal (stored in common block);
351      this affects truncation error ; generate new output file for exp. which
352      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
353        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
354        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
355        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
356        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
357        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
358    o start implementation of deep-atmosphere and anelastic formulation
359    o verification: remove 2nd copy of input files and use script "prepare_run"
360      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
361    o mom_common/vecinv/fluxform: fix a few initialisation isssues
362    o profiles: fix for multithreaded case
363    
364    o diagnostics: rename few diags:
365      s/'PRESSURE'/'RCENTER '/g
366      s/'TICE    '/'oceFreez'/g
367      s/'TAUX    '/'oceTAUX '/g
368      s/'TAUY    '/'oceTAUY '/g
369      s/'SWFLUX  '/'oceQsw  '/g
370      s/DIFx/DFxE/g
371      s/DIFy/DFyE/g
372      and add few ocean-forcing diagnostics:
373      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
374    o modifications to pkg/seaice/growth.F and budget.F, which change results of
375      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
376      as actual snow thickness.  It now refers everywhere to effective snow
377      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
378    
379    checkpoint58r_post
380    o modifications to pkg/seaice/growth.F, which change results of
381      lab_sea experiment: fixes pertain to melting snow over open water, to
382      masking EVAP under sea ice, and to using the correct AREA variable for
383      computations of EVAP, PRECIP, HSNOW, and GHEFF
384    o add ability to read bathy, salt, and theta using MNC (off by def)
385    o add flooding algorithm and advection of HSNOW for pkg/seaice;
386      both are turned off by default and do no change any results
387    o seaice advection with pkg/thsice: a step toward the use of non-linear
388      advection scheme, but #ifdef or commented out for now (requires more EXCH).
389    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
390      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
391      in natl_box (affects results @ truncation level: update output.txt)
392    o multi-threading and IO:
393      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
394      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
395        (needed to work with SingleCpuIO): tested in all verif. exp.
396    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
397      affects the results (but none of the verification test uses this scheme).
398    o Adding some pkg/diagnostics capability to pkg/seaice
399      (will certainly be subject to changes)
400    o ctrl: adding new control variables:
401      lwflux, lwdown, evap, snowprecip, apressure, runoff
402    
403    checkpoint58q_post
404    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
405      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
406      high_res_cube configuration by 4% on Columbia.
407    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
408      add (in global_with_exf/code) a version of EXF_INTERP_READ without
409      dynamical allocation (seems to work in multi-threaded).
410    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
411      single CPU io) so that TAF does not have to see EESUPPORT.h
412    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
413    
414    checkpoint58p_post
415    o obcs: stop if obcs is used with useCDscheme = .true.
416    o shelfice:
417     - fix a sign error so that no slip at shelfice interface works
418     - remove stop for combination non-hydrostatic code and shelfice. That does
419       not mean, that the results are correct, but at least they are numerically
420       stable
421    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
422    o added adjoint exch routined for all exch*3d* routines
423      and updated flow directives
424    
425    checkpoint58o_post
426    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
427      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
428    o change controling S/R for writing pickup file (new S/R do_write_pickup)
429      and clean-up reading/writing of pickup files.
430    o fix local version of read/write pickup (NH part) in rotating_tank/code
431    o simplify EXCH interface:
432     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
433     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
434    o added the regrid package
435    o shelfice:
436     - add a simple boundary layer scheme to reduce noise
437     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
438    
439    checkpoint58n_post
440    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
441       local variable (not in common block).
442    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
443      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
444      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
445        to work with SingleCpuIO.
446    o add "_d 0" to real constant of pkg/cfc subroutines ;
447       update exp. cfc_exemple & tutorial_cfc_offline output files.
448    o multi-threading and IO:
449      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
450        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
451      - barrier before and after reading.
452      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
453      - avoid using MDS_WRITELOCAL for LAND pkg output.
454      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
455        common-block variables ; Allows multi-threading with master-thread IO.
456    o change default MAX_NO_THREADS from 32 to 4 ;
457      and stop cleanly when MAX_NO_THREADS is too small.
458    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
459    
460    checkpoint58m_post
461    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
462       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
463    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
464       keep global_ocean.90x40x15 (for AD testing) with former secondary test
465       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
466    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
467        add MITgcm_tutorials (= code + all the tutorials)
468    o ecco, option to compute cost for total ssh (mean+anom)
469    o consistent with addition of ptracer and ssh in pkg/profiles
470    o profiles: adding ptracer and ssh
471    o testreport: change multi-test output-file name
472      (from output.txt.{name} to output.{name}.txt)
473    o profiles: now ok for mutli-tiles case
474    o seaice: add 4 parameters for different advection schemes for area,
475      (effective) seaice thickness, enthalphy, and snow height. Their default
476      is the standard parameter SEAICEadvScheme
477    o calc_gw:
478     - add cosFacU in zonal viscous flux (harmonic.visc.).
479     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
480       of tutorial_plume_on_slope.
481    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
482    o calc_gw: true flux-form, account for horizontal grid spacing.
483      update rotating_tank results, but not plume_on_slope (affected at
484      truncation level, 11 digits).
485    
486    checkpoint58l_post
487    o calc_gw:
488     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
489     - remove side-drag for now (need to fix it); update plume_on_slope results.
490     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
491    o commit code to make SST/SSS weights spatially variable
492      (based on either variable in-situ or variable initial T/S weights)
493    o pkg/ecco:
494      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
495        now based on horizontally varying weights wthetaLev, wsaltLev
496      * cost_averagesflags now returns year indices in addition to day, month
497      * sflux balance is performed on annual basis
498        (sflxumm, sfluxmm2, bal_sfluxmm)
499      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
500        including separate counting and multipliers
501    o pkg/rbcs
502      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
503    
504    checkpoint58k_post
505    o testreport:
506     - always build in dir. "build" (if not there, mkdir build instead of building
507       & running in input)
508     - run in dir run (if it exists), in build otherwise.
509     - call prepare_run (if input/prepare_run exists)
510     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
511    o pkg/exf modifications to interpolation and rotation routines for more
512       reasonable treatment of North Pole singularity: for tracers North Pole
513       value is set to northernmost zonal-mean value, for zonal velocity it is
514       set to zero, and for meridional velocity it is set to northernmost value.
515    o pkg/exf/exf_check_range.F
516     - add tile index to diagnostics and move stop statement to the very
517       end of the routine.
518    o pkg/diagnostics: (diagnostics_main_init.F)
519      define title of isomorphic variables according to the current config.
520    o pkg/thsice with pkg/seaice dynamics:
521    - fix domain of computation (interior only, required for exf) and do exchanges
522    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
523    o towards a standard way of dealing with multi-threading in MONITOR
524      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
525    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
526       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
527    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
528    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
529    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
530       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
531    o tracer advection:
532     - clean-up and simplify calc_common_factors.F
533     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
534       advection subroutine (but still not used within DST advection S/R)
535    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
536    
537    checkpoint58j_post
538    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
539      from file (collects calls previously in FORWARD_STEP)
540    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
541    o adjoint store dir. adjusted accordingly
542    o genmake2
543      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
544    
545    checkpoint58i_post
546    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
547      on wind stress (SEAICEstressFactor defaults to 1.)
548    o Total number of Timers is finite (<=40): comment out 2 non-essential one
549      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
550    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
551      on CS-grid: no longer loosing mass.
552    o exf & curvilinear-grid: no longer modify longitude xC & xG.
553    o pkg/ggl90: fix sloppy output and fix a bug
554    o pkg/seaice: added SEAICEuseEVPpickup parameter
555      - Set to false in order to start EVP solver with
556        non-EVP pickup files when using SEAICEuseEVP
557      - fix sign error in diffusion in seaice_calc_rhs
558    
559    checkpoint58h_post
560    * Modifications for bottom topography control
561      o replace hFacC by _hFacC at various places
562      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
563      o add non-self-adjoint cg2d_nsa
564      o update autodiff support routines
565      o re-initialise hfac after ctrl_depth_ini
566      o works for 5x5 box, doesnt work for global_ocean.90x40x15
567    * Adding verification for 5x5 box (4-layer) bottom topography control
568    
569    checkpoint58g_post
570    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
571       used for mean seasonal cycle, mean diurnal cycle); add an example
572       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
573    o pkg/ggl90:
574      - add parameter (minimum surface kinetic energy)
575      - fix bug (avoiding division by zero)
576    o couple pkg/thsice to pkg/seaice:
577      - modify advection in seaice to accomodate new scalar fields to be advected
578      - only muliDimAdection scheme work with seaice/thsice
579      - mapping of thsice-variables to seaice-variables, back and forth
580      - does not break the verification experiments, but does not give the
581        desired results either
582    o pkg/seaice
583      - make (default) second order advection a bit less confusing?
584    
585    checkpoint58f_post
586    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
587      to pkg/seaice):
588      - new routines thsice_map_exf and thsice_get_exf provide the interface
589      - add an additional formal parameter to thsice_solve4temp
590    o pkg/exf:
591      - add new fields wspeed, snowprecip (to be able to couple to thsice)
592      - correct Stefan-Boltzmann constant
593      - new parameter for longwave surface emittance
594      - separate some stuff from exf_bulkformulae into new routines  
595        exf_radiation, exf_wind
596      - add new parameters and constants: longwave emissivity for ocean, ice
597        and snow, evaporation parameters over ice
598      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
599        either wind from stress or stress from wind
600    o pkg/thSIce:
601    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
602    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
603       and THSICE_CALC_THICKN
604    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
605    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
606      to make debugging easier.
607    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
608    o pkg/bulk_force:
609      - clean-up comments and parameters ;
610      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
611    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
612      generate new output for test-experiment: aim.5l_cs.thSI
613    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
614      testreport accordingly
615    
616    checkpoint58e_post
617    o SEAICE_CGRID adjoint done
618    o R_STAR adjoint implemented.
619      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
620      * need to sort out init. of h0facc, etc.
621    o Make pkg/profile fully independent of ecco,cost, etc. stuff
622      to be able to use it in pure forward.
623    
624    checkpoint58d_post
625    o upgrade simple test-experiment to tutorial example:
626     step.1: duplicate the experiment and (step.2) will remove the old copy.
627      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
628      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
629      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
630      tutorial_global_oce_biogeo    <- copy of dic_example
631      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
632      tutorial_plume_on_slope       <- copy of plume_on_slope
633      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
634      tutorial_global_oce_optim     <- empty for now (David ?)
635      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
636     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
637    o correct a sign problem in cost_scat.F
638    o obcs and ptracers: fix boundary conditions for advections schemes
639      with larger stencil
640    o thsice adjoint: start
641    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
642      completeness
643    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
644      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
645    o ptracers adjoint:
646      * avoid extensive recomputatations
647      * fix missing re-init. of gptr (missed by TAF)
648    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
649      me to turn off the excessive output to STDOUT that this package produces
650    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
651      and add those terms in Vector-Invariant formulation.
652    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
653      if the control period (xx_hfluxperiod etc) is 0
654    o in profiles pkg, clean routines and fix details
655    o in ecco pkg, reading ssh data:
656      fix problem in case the model does not start at iter0=0
657    o fix mnc-pickup/restart for ptracers
658    o new package prifiles:
659      code to compute profile-based cost by Gael Forget
660      (modifs in ecco, ctrl, autodiff)
661    o Benign bug fix in initialization (spotted by M. Mazloff) of
662      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
663    
664    checkpoint58c_post
665    o adjoint: finish NLFS adjoint and provide reference output in
666      verification/global_ocean.90x40x15/results_ad_nlfs
667    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
668      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
669      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
670      with SEAICE_CGRID defined.
671    o move calendarDumps from "data" to "data.cal" and clean-up the code
672      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
673    o add useEXF & useCAL flags (for now, set in hard-coded way)
674    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
675      (were missing in NH mode, and wrong in quasihydrostatic mode).
676      waiting for Chris updated version of calc_gw to add those CALLs.
677    o fix bug in quasihydrostatic S/R ;
678      add a test for this option: global_ocean.90x40x15.qshyd
679    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
680      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
681    o add on/off flag useOffLine for package OFFLINE
682    o seaice:
683      - modify advection so that it works also on the C-grid
684      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
685        problem in multi-tile runs with C-grid
686      - add flags for clipping ice velocities and/or masking solver forcing
687      - fix drag (ocean on ice) formulation and a bug that caused noise in the
688        C-grid solver
689      - added a few comments to seaice_diffusion.F
690      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
691        are now exclusive)
692      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
693        required re-ordering the code a little:
694       + make DAIRN global variable (defined in SEAICE)
695       + move computation of the viscosities eta and zeta into a new separate
696         routine (because I need to recompute them in seaice_ocean_stress.F)
697    
698    checkpoint58b_post
699    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
700      update output.txt of exp. aim.5l_cs.thSI
701    o various mnc cleanups and improvements:
702      + shrink lookup tables by factor of ~4
703      + better error reporting when running out of lookup space
704      + able to handle longer path/file names (up to 500 chars)
705    o adjoint:
706      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
707      - TBD: "hidden" mom_vecinv recomp. in dynamics
708    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
709     (allow to differentiate between forcing components using new integer flags:
710      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
711     and add new flag to put Dissipation tendency out of Adams-Bashforth.
712    o ecco
713      - enable trend removal from SSH anomaly obs.
714    o adjoint
715      - a fix for PmEpR when #undef EXACT_CONSERV
716      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
717      - try to fix "hidden" recomp. in forward_step for NLFS
718        (NLFS seems broken sometimes after I checked it in)
719    o seaice:
720     - add c-grid version of the dynamic solver:
721       + three new routines that are the c-grid substitute lsr, dynsolver
722         and ostres
723       + put a few fields that were local to dynsolver into global common
724         blocks, so that I can move the computation of stresses etc into
725         seaice_lsr (saves coding but may break the adjoint).
726     - replace more hardwired parameters by runtime parameters
727     - add ice masks that mask the rhs of the implicit solvers where there
728       is no ice (commented out in seaice_dynsolver, because i am not sure
729       if this works properly), eventually this should replace the clipping
730       of ice velocities in seaice_dynsolver to +/-40cm/s.
731    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
732      include it only where its needed
733    o move balancing of fluxes before the call of external_forcing_surf
734    o seaice:
735      - correct units of turning angles (now they are really in degrees)
736      - move computation of GWATX/Y out of main routine into dynsolver
737      - initialize GWATX/Y in seaice_init
738    o Apply mask on Fresh-Water flux (needed for SSH forcing).
739      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
740    o seaice: add runtime flags for turning angles (default to zero)
741    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
742      and trend from exf forcing and ctrl control adjustments
743    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
744      (since checkpoint57x_post)
745    o change the default rotation period to 86164.s = the Earth rotation
746    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
747      and based on a reference stratification. Tested within hs94.cs-32x32x5.
748    o seaice advection: add code for choosing between the default (2nd order
749      central differences) and multiDim advection schemes provided by
750      pkg/generic_advdiff
751    o seaice:
752      - removed all references to SEAICE_GRID.h fields from
753        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
754        (cubed-sphere configuration will change a little)
755      - grid computations in seaice_init are obsolete now.
756      - cleaned up code a little so that is easier to read (hopefully).
757      - added new (better?) discretizations of default advection and diffusion
758        (turn on with SEAICEuseFluxForm)
759      - replace 1 in 3d global fields by kSurface in growth.F
760      
761    checkpoint58a_post
762    o seaice:
763      - bug fix in advect.F
764    o shelfice:
765      - separate shelfice load anomaly from pload (breaks with time
766        dependent forcing), => introduce constant field shelficeLoadAnomaly.
767        Its default is 0., but it may be computed more cleverly from (unknown)
768        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
769        done offline. A good approximation of the pressure load anomaly is
770        necessary to avoid large initial adjustment processes underneath
771        deep-reaching shelfice.
772      - small fix in ISOMIP shelfice_thermodynamics
773      - add more sophisticated thermodynamics of Hellmer (1989), this is
774        now the default
775      - give a few constants more intuitive names
776    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
777      if bulk formulae are used in long integration (especially EmPmR). Turn
778      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
779      if balancePrintMean, the imbalance that is substracted is printed to
780      STDOUT.
781    o fix bug (typo) in obcs_apply_eta.F
782    o add a new package shelfice which enables us to model the circulation
783      underneath shelf-ice with draughts of hundreds of meters.
784     - works
785     - to do: + include improved thermodynamics
786              + check whether kSurfC (from model/inc/SURFACE.h) can be used
787                instead of new field kTopC
788              + can we use topoFile, Ro_surf and existing code in ini_depth.F
789                instead of new field R_shelfIce and new code in ini_depth.F
790                and ini_mask_etc.F?
791              + adjust vertical mixing schemes?
792    o seaice pkg:
793     - add a cpp-flag to include a simple formula for a salinity dependent
794       freezing point of sea water at the surface
795     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
796       meridional stresses are now different (and hopefully correct)
797    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
798       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
799       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
800    o pkg/diagnostics: add options and parameters for regional-statistics
801       diagnostics ; define regions by reading a region-mask from a file
802       (might add other options later)
803    o pkg/bulk_force:
804     - add option and parameters to use AIM surface-flux formulae.
805     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
806       others forcing fields (defined in PARM05, parameter file "data") are loaded
807       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
808     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
809     - use the right EXCH call for uwind,vwind (to work on CS-grid).
810     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
811       and parameters (note: calcWindStress replaces .NOT.readwindstress).
812     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
813    
814    checkpoint58
815    o add "--embed-source" option to genmake2 which, when the supporting
816      tools can be compiled (as determined by genmake2) will turn on the
817      embed_files package which then embeds the entire MITgcm source code
818      (*.[fFhc] + Makefile) used for the build within the executable
819      - requested by CNH but off by default
820      - adds a paltry <9MB to the mitgcmuv executable in most cases
821      - only writes the output when useEMBEDSRC in eedata is true
822    o clean up 3-dim. relaxation codes:
823      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
824      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
825      * Thanks to Tom Haine for testing!
826    
827    checkpoint57z_post
828    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
829      affects output (@ truncation level) of exp. plume_on_slope ; updated.
830    o fix the pickup behavior for obcs in combination with ptracers
831    o fix a bug in ptracers_external_fields_load
832    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
833      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
834    o transfered surface NH pressure to eta field (if exactConserv).
835    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
836         and update lab_sea output.txt file.
837    o completing 3-dim. relaxation code: additional term
838         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
839      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
840      * At compile time, in "EXF_OPTIONS.h" set
841          #define  ALLOW_CLIMTEMP_RELAXATION
842          #define  ALLOW_CLIMSALT_RELAXATION
843      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
844          tauThetaClimRelax3Dim = 15552000.0,
845          tauSaltClimRelax3Dim  = 15552000.0,
846      * 3 cases:
847          1) Use a constant-in-time 3-dim. field
848          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
849          3) Real-time relax. to time-evolving prescribed field
850    o Adding Laplacian-type smoothness constraint on
851      initial and boundary (forcing) controls (ic, bc)
852      * enable at compile-time via
853        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
854      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
855      * Absolute scale somewhat unclear so far
856      * no area weighting was included since no other cost term does so far
857    
858    checkpoint57y_post
859    First step for a NLFS adjoint
860    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
861    o new init. routines for calc_r_star, calc_surf_dr
862    o still need to deal with ini_masks_etc
863    o testreport seemed happy
864    checkpoint57y_pre
865    
866    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
867    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
868    o add new offset feature to offline pkg (plus minor cleanup)
869    o cfc fixes for final year of integration
870    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
871      be in GCHEM_OPTIONS).
872    
873    checkpoint57x_post
874    o fix testreport Pb in multiple test experiment.
875    o cleanup our namelist syntax in verification:
876      - make it more F95 standards compliant (some work still needed)
877      - allows the vast majority of our tests to work with gfortran
878    o Non-Hydrostatic:
879     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
880     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
881    o Allow to apply AB on T,S rather than on AB(gT,gS):
882     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
883     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
884       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
885     - need a "clever" read_pickup to restart from the other AB formulation
886    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
887    o remove some unused variables (reduces number of compiler warnings)
888    o adjoint
889      * Disable useVariableViscosity for adjoint for time being
890        (there are a number of extensive recomputations)
891      * Initialize certain variables needed for adjoint
892    
893    checkpoint57w_post
894    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
895                 fix the singleCpuIO RS version of MDSWRITEFIELD
896       and add a WARNING if using globalFiles=T with multi-processors.
897    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
898      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
899    o tracer advection scheme:
900      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
901       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
902       was not very convenient).
903      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
904       (further tests needed for the implicit DST & Flux-Limiter schemes).
905    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
906      and sRef for convenience, handy, when you want to initialize
907      ptracers in a large domain with a constant non-zero value. Also,
908      untangle ptracers_init.F a little.
909    
910    checkpoint57v_post
911    o change dome exp. to use variable viscosity in side-drag terms.
912    o remove all the files from the cfc_offline test since they are now
913      incorporated into tutorial_cfc_offline which has been producing
914      identical results for a few days of testing
915    o add new parameter: sideDragFactor to enable half-slip-side BC
916      and change side-drag S/R to use viscosity from mom_calc_visc
917      (can switch back by setting sideDragFactor=0.); affects results at
918      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
919       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
920    o vorticity & strain are now computed without masking, to account for
921      no-slip-side BC in variable viscosity calculation ; mask is applied
922      anyway later on, before computing advection/coriolis terms.
923    o modify exp4 to test new obcs support for reading from external files
924      and for passive tracers
925    o fix behavior of ptracers_monitor when monitor output is written to a
926      netcdf-file; still not independent of monitor.F (writes in the same
927      file).
928    o change default value of tRef (put a uniform, meaningful value for ocean
929      & atmos) and initialize sRef (was missing, as Martin mentioned).
930    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
931      to be proportional to enstrophy dissipation length.  Thus,
932       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
933      This is now consistent with Smagorinsky and with the manual.
934    
935    checkpoint57u_post
936    o OBCS and PTRACERS: add open boundary support for passive tracers
937      - either use homogenous (pseudo) v.Neumann conditions or prescribe
938        OB-values from file; this is not different from the way theta and salinity
939        are treated
940      - however, Orlanski-radiation conditions are not supported, and the model
941        will stop if you use pTracers and Orlanski at the same time.
942      - beefed up the rountine obcs_external_fields_load: now only those open
943        boundary values are overwritten with values from files for which there
944        are really files, otherwise the OB-fields remain untouched. This makes
945        it possible to use different OBs at different ends of the domain (as
946        with EXF)
947    o reduce number of exch calls in shap_filt (s2).
948    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
949      truncation level) 4/5 MLAdjust test results (11&12 digits match).
950    
951    checkpoint57t_post
952    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
953    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
954      same truncation, independent of the face number: affects affects several
955      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
956    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
957      note that biharmonic viscosity + no-slip was not tested in any experiment.
958    o fix bug in non-linear free-surf side-drag ; generate new output for
959      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
960    o make mnc honor the writeBinaryPrec flag for most kinds of output
961    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
962    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
963      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
964    o add brackets in multi-terms sum to get same truncation, independent of
965      the face number (manage to get exactly same value of gU,gV at the cs-edge)
966      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
967    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
968      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
969      a maximum grid-scale Reynolds number.  Also, changes all length calculations
970      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
971      Suggested values of viscosity parameters found in mom_calc_visc.
972      Many new viscosity diagnostics available.
973    
974    checkpoint57s_post
975    o Add clearing-house for viscosity calculations, mom_calc_visc and
976      correct numerous bugs in LeithD and Smagorinsky discretizations.  
977      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
978      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
979      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
980      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
981      The Strain-Tension form is now called with useStrainTensonVisc=.true.
982      ViscAhStrain and viscAhTension are now retired.
983    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
984    o In response to JMC's bug report, genmake2 now ignores any soft-links
985      that it finds in the *current* directory when searching for files.
986      Soft-links found in any other source directories will still work as
987      they did before.
988    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
989      a C routine to unlimit the stack size
990    o mnc-ify pkg/aim snapshot vars
991    o mnc-ify pkg/land as requested by Daniel
992    o various changes to mnc including:
993      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
994      - output can now be grouped so that all files within a group
995          change the ITER portion of their names in lock-step together
996      - can now read ("global") PER-FACE (in addition to PER-TILE) files
997          and works with both EXCH1 and EXCH2 (but needs more testing)
998      - writing works for all verification test cases w/ g77 on Linux
999    
1000    checkpoint57r_post
1001    o make MNC variable initialization happen earlier
1002    o add diagnostics for (almost) each term of the momentum Eq.
1003    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1004    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1005    o remove MINIMAL_TAVE_OUTPUT option ;
1006      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1007    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1008      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1009    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1010    o add time-dependent SST, SSS control
1011    o cost terms in ecco/ modularized (new cost_generic.F)
1012    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1013    o new infrastructure for seaice model vs. obs misfits in seaice/
1014      * driver from the_main_loop.F is seaice_cost_driver.F
1015      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1016      * gradient check in Exp. 6a of natl_box_adjoint/
1017    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1018      (see README file)
1019    
1020    checkpoint57q_post
1021    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1022    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1023      - bug was reported by Jean-Michel and Ian Fenty
1024    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1025      update exp. cpl_aim+ocn output.
1026    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1027      Needed for high-res. runs with large global files
1028      to be able to limit tapelev size
1029    o Changed some tests for adjoint:
1030      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1031      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1032      * global_ocean.90x40x15/ back to default 3-level checkpointing
1033    o Modifications to enable scripted COMMON to MODULE conversion
1034      * verification/OpenAD/code/ has necessary scripts and description;
1035      * converts, compiles and runs successfully;
1036    
1037    checkpoint57p_post
1038    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1039    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1040      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1041    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1042    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1043      (was already the case for dissipation with mom_vecinv,
1044       and also the case for grad.PhiHyd when staggered-timeStep)
1045      This will allow to put dissipation out-off the AB time-stepping.
1046     Unfortunately, affects truncation error. Update output of exp. that "fails"
1047      (cg2d matching number) and leave the others for later: front_relax(10),
1048      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1049      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1050    
1051    checkpoint57o_post
1052    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1053      (2) its ready to be documented during the 20050801 DocFest
1054    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1055      for ideal_2D_oce and lab_sea on linux_ia32_g77
1056    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1057      in global1x1_tot/code_seaice_adj to access indices 32, 33
1058      (worth another tag)
1059    
1060    checkpoint57n_post
1061    o adding precip control xx_precip 32
1062    o adding swflux control xx_swflux 33
1063    o Replacing 10 forcing penalty cost routines by 1 generic.
1064    o Implementing partitioning in time-mean and variable adjustment
1065      for atmos. state.
1066    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1067    o in natl_box_adjoint:
1068      * updated exp 1 to 10
1069        (but does not have time-mean vs. variable split results yet)
1070    o updated global1x1/*_seaice_adj/
1071      to incorporate latest changes
1072    o enable useSingleCpuIO for mdsio vector routines
1073      (applies in particular to tapelev I/O)
1074    o removed inefficient K-loop in all active_file*control*.F
1075    
1076    checkpoint57m_post
1077    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1078      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1079    o pkg/exch2: filling of face-corner halo regions is optional
1080      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1081    
1082    checkpoint57l_post
1083     tag before updating tutorials (pre-release-2)
1084    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1085       for output and interpolation of input fields onto model grid)
1086    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1087       Affects results of exp. rotating_tank ; update output.txt.
1088    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1089          and taking the square quantity and/or using a fraction-weight field.
1090    o fix aim_diagnostics_init.F mate numbers.
1091    o add mnc output capability to diagnostics/diagstat and update
1092      our cvsignore files for the ACSII output generated
1093    
1094    checkpoint57k_post
1095    o lab_sea now uses diagnostics package and provides a suite of
1096      new EXF diagnostics output.
1097    
1098    checkpoint57j_post
1099    o exf
1100      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1101        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1102        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1103      * extended diagnostics output
1104        - now includes all EXF variables
1105        - hs, hl moved to common block
1106        - separate S/R for diagnostics, called after ctrl vector is added
1107        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1108        - EXFqnet contains true Qnet (i.e. includes qsw)
1109      * updated verif. lab_sea, global_with_exf
1110      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1111        to ensure that diagnostics sees a true EXFqnet
1112    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1113    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1114      several times with different frequencies.
1115    o mnc-ify the thsice package as requested by Daniel Enderton
1116      - the monitor--MNC output needs work
1117      - many attributes need to be added (most are currently blank)
1118    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1119      - many attributes need to be added (most are currently blank)
1120    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1121    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1122    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1123      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1124         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1125    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1126     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1127    
1128    checkpoint57i_post
1129    o Diagnostics package was changed: diagnostic allocation is now deactivated
1130      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1131    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1132      add 1rst Order upwind vertical Shear.
1133    o add a quick fix for A/B checkpointing in OFFLINE mode
1134    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1135      end-run around the C/Fortran linking horror in eesup/src/timers.F
1136    o added pkg/runclock: allows user to terminate run based on wall clock
1137    o added non-hydrostatic scaling parameter: nh_am2
1138    o pkg/my82: futile attempt to make results compiler-independent by adding
1139      some "_d 0", etc. no effect.
1140    o for mnc output, fill the 'T' coordinate var with myTime and create a
1141      separate 'iter' variable for iteration count
1142    o pkg/diagnostics:
1143      add new capability: output of Global/Regional & per-level statistics ;
1144      tested against monitor output (including land & thSIce) on various exp.
1145    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1146    
1147    checkpoint57h_done
1148      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1149      data.diagnostics, data.gchem, data.ptracers) is done.
1150    
1151    o pkg/diagnostics: prepare for Global/Regional statistics.
1152      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1153    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1154      and rename it: DIFFERENT_MULTIPLE
1155    
1156    checkpoint57h_post
1157    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1158    o pkg/diagnostics: change output frequency, now in seconds (instead
1159      of Nb of iterations). This requires to change data.diagnostics.
1160    checkpoint57h_pre
1161    
1162    o in mnc, let the user create the output dir if both mnc_outdir_date
1163      and mnc_outdir_num are false
1164    o add fflags() to pkg/diagnostics which allows one to specify, on a
1165      per-file basis, the file precision [default behavior is unchanged]
1166    o added diagnostics to pkg/kpp, including computation of mixed layer
1167      depth based on a temperature/density criterion
1168    o updated verification/natl_box to test the new pkg/kpp diagnostics
1169    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1170    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1171    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1172      not mnc -- this mistake was found by JMC and is now corrected
1173    
1174    checkpoint57g_post
1175    o add Adams-Bashforth 3rd Order time stepping:
1176      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1177      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1178    checkpoint57g_pre
1179    
1180    o make lambda[Theta,Salt]ClimRelax spatially varying
1181      (default remains spatially uniform constant based on tau)
1182    o added new control variables
1183      * init. uVel, vVel, etanN
1184      * lambda[Theta,Salt]ClimRelax
1185    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1186      (suggested by G. Forget)
1187    
1188    checkpoint57f_post
1189    o add parameter "baseTime" = model base time = time at iteration zero
1190      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1191      account for baseTime shift
1192    o move Coriolis arrays from PARAMS.h to GRID.h
1193    checkpoint57f_pre
1194    
1195    o mnc-ifying the seaice package
1196    o introduced an alternative length scale calculation for use in the limiting
1197      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1198    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1199    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1200      as well as grad(vort3).  Made it compatible with both approximate form
1201      for the cubed sphere and full form of these gradients.  Added flag
1202      useFullLeith to select between approximate and full form.  
1203    o add "d0" in getcon.F to reduce differences between compilers/platforms
1204      update output.txt of exp. fizhi-gridalt-hs
1205    o change port_rand funtion to allow to set the seed.
1206    o fix obscure MNC bug involving conversion between reals and integers
1207      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1208        new version is now more standards-compliant
1209    o adjoint-related modifications
1210      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1211      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1212      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1213    
1214    checkpoint57e_post
1215    o Adding eddy stress controls a la Ferreira et al.
1216    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1217    
1218    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1219      update output.txt of exp. fizhi-gridalt-hs
1220    o add more "Z" dimensions and associated coordinate vars to MNC
1221    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1222    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1223      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1224      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1225      months and years.  Requires pkg/cal.
1226    o diagnostics: add pickup functionality
1227      - off by default for backwards compatibility
1228      - current version only uses MDSIO -- MNC will be added
1229    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1230    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1231    
1232    checkpoint57d_post
1233    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1234    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1235      output from the diagnostics package
1236    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1237    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1238      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1239    o add coordinate variables to the MNC output from the diagnostics package
1240    o change MNC-flags default value: true when useMNC=TRUE
1241    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1242      the ability (off by default) to read the grid information using MNC
1243    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1244    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1245    o do snap-shot diagnostics at the middle of the time-interval (instead of
1246      at the end).
1247    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1248      new test for AIM with thSIce + slab-ocean
1249    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1250    o move state variable diagnostics to the beginning of the time step ;
1251      (note: still needs some work specially for snap-shot diagnostics)
1252      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1253    
1254    checkpoint57c_post
1255    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1256    o generate new output.txt files on faulks with g77 & the new -ieee option
1257    checkpoint57c_pre
1258    
1259    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1260      update output.txt of exp. global_ocean.90x40x15
1261    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1262      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1263    o add saltFlux(+File) forcing capability with periodicExternalForcing
1264    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1265    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1266    o improvements for the MNC output from DIAGNOSTICS:
1267      - correct handling of the unlimitied dimension
1268      - all dims now have associated coordinate variables
1269      - variables located at U, V, and Corner ("Z") points are now written
1270        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1271        *all* data points are output
1272    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1273    o added pkg/seaice/seaice_monitor.F
1274    o mdsio_readfield.F can now read files visible only to master MPI process.
1275    o pkg/seaice: some test code for ice-modified ocean stress
1276    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1277      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1278      spurious negative numbers for precipitation and humidity.  Will cause
1279      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1280    o pkg/ctrl/
1281      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1282        May be enabled via doPackDiag
1283      *  introduce z-scaling of
1284         + gradient (doZscalePack) and
1285         + control (doZscaleUnpack)
1286    o pkg/mdsio/
1287      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1288      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1289    
1290    checkpoint57b_post
1291    o simplify options in diagnostics_fill arguments (remove weird combinations)
1292    o fix MNC coordinate variables so that they now contain per-face index
1293      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1294      general, EXCH2 grids are only aligned to a "local" coordinate system
1295    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1296    o Implement instantaneous output within pkg diagnostics:
1297      setting a negative frequency in data.diagnostics produces
1298     "snap-shot" output (as opposed to time-average if freq > 0)
1299    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1300      NOTE: change ptracer diagnostics name: use 2 characters to work with
1301            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1302    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1303      becomes the coordinate variable for the 'T' dimension
1304    o add CF-style coordinate variables to MNC
1305      - just a first cut:  numbers are meaningless on the cubesphere and
1306        missing along the T axis but otherwise it works!
1307    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1308    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1309    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1310      this is based directly on what the model compute, so that the content of
1311      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1312    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1313    o clean up build options files for SunOS, in particular
1314      - remove -traditional from xmakedepend
1315      - change -xarch=v9 to -xarch=native for f77
1316      - restore use of make (not gmake)
1317      - add CC=gcc if using g77
1318    o changes per discussion of AM, JMC, & EH3 today:
1319      - move redundant "grid" variables out of "state" -- in preparation of
1320        creating proper CF-style coordinate variables and in recognition
1321        that any/all grid variables can be easily copied (eg. w/NCO) from
1322        the grid files into any of the other NetCDF files
1323      - *always* output grid variables with MDSIO (this will eventually be
1324        changed)
1325      - output MNC grid file if useMNC is true
1326    o every instance of _END_MASTER() has been found and replaced with
1327      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1328      preprocessors
1329    o re-arrange diagnostics pkg initialisation:
1330     - allow each package to extend the available diagnostics list
1331     - add some checking and fix small problems (multi-threaded, ...)
1332     - new S/R diagnostics_fill (replace fill_diagnostics):
1333       look through the short list of active diag. (instead of the long list)
1334       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1335    
1336    checkpoint57a_post
1337    o this set of changes restores TAMC compatibility
1338      tested for global_ocean.90x40x15 adjoint on trough
1339      (what a pain)
1340    
1341    checkpoint57a_pre
1342    o some modifs in tools/build_options for sunos
1343    o call ctrl_pack for ctrl at end for optimcycle=0
1344    
1345    checkpoint57
1346    o add horizontal bi-harmonic viscosity for vertical velocity
1347      - new parameter viscA4W (defaults to viscA4)
1348      - affects only non-hydrostatic code
1349      - to be done: no-slip lateral boundary conditions
1350    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1351    o implement Implicit Vertical advection for pTracers
1352    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1353      (implemented also for implicit vertical diffusion & advection)
1354    o OBCS: extend application of tracer open boundary conditions
1355      to a strip beyond the boundary of width Olx/Oly
1356    o add call monitor to TAF set of required calls (flow directives)
1357      and include in natl_box_adjoint
1358    o untangle a few ifdefs related to cost, ctrl, autodiff
1359      untangel a few ALLOW_ECCO_OPTIMIZATION
1360    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1361      (theta2, salt2 in ecco_cost_weights)
1362    
1363    checkpoint56c_post
1364    o OBCS as control variables
1365      - update ctrl_ad_diff.list, obcs_ad_diff.list
1366      - remove balance of obcs controls from default
1367      - fix index bug nobcs in ctrl_init
1368      - fix dummy fields filen in ctrl_pack
1369      - add dummy weights for obcs
1370    o lsopt: comment out fort.94 output
1371    o optim:
1372      - remove unnecessary header files
1373      - adjusted namelists
1374      - add xerbla.F to Makefile
1375    o exf:
1376      - multiple modifications of exf_check_range
1377      - unit change in exf_init_runoff from [m/year] to [m/s]
1378    o mdsio:
1379      - i/o-vector change debugLevel from debLevA to debLevB
1380    
1381    checkpoint56b_post
1382    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1383      is called from DO_THE_MODEL_IO
1384      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1385      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1386      - clean up PTRACERS_WRITE_TIMEAVE a little
1387    o add another verification experiment that tests both the cfc-pkg and
1388      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1389      reactive tendencies treated inline with regular timestepping
1390    o testreport previously did a lousy job of comparing small numbers, so
1391      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1392      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1393      testreport.
1394    o ptracers_monitor: bug fix for MPI
1395    
1396    checkpoint56a_post
1397    o GCHEM: finish reorganizating the package
1398      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1399        (introduces another 3D-array for each passive tracer, but only if
1400        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1401        gchemTendency is not needed because the timestep is done separately)
1402      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1403      - GCHEM is now---more or less cleanly---separate from PTRACERS
1404      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1405        so clear to me how that should be done in a general way.
1406    o CFC: improve formatting of output in CFC_ATMOS
1407    o PTRACERS:
1408      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1409        that ALL experiments with ptracers enable can be checked. This makes
1410        GCHEM_MONITOR obsolete.
1411      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1412        monitorFreq
1413      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1414    o add PTRACERS (PTR0[1-5]) to testreport output
1415    o exf_check_range:
1416      * default changed to .TRUE.
1417      * will check values for niter0 if debLevA, every timestep if debLevB
1418      * STOP in exf_check_range if 'out of range'
1419      * range chosen generous to allow for potential extema
1420      TBD: a version with stricter range
1421           permitted range would be runtime parameters
1422    o GMredi:
1423      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1424      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1425      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1426    o GCHEM:
1427      - move call to GCHEM_FORCING_SEP, so that it is now called before
1428        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1429      - introduced a useGCHEM runtime flag and applied it everywhere.
1430      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1431        this flag is now only visible within GCHEM-pkg routines.
1432      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1433        be replaced by a 3D array that is computed before thermodynamics; for
1434        this, the tracer ID iTracer had to be included into the parameter list
1435        of ptracers_forcing
1436      - set up forward_step to call gchem_forcing, that will replace
1437        gchem_forcing_int in ptracers_forcing
1438      - cleaning up
1439    o small cleaning of exch2: remove files that are also in eesupp/src
1440    
1441    checkpoint56
1442    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1443    o mnc: cleanup "full" files--fixes out-of-memory problem
1444    o ECCO-GODAE
1445      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1446      * fully merged and updated from SIO code
1447        windstress sign change affects
1448        - exf_inscal_[u/v]stress
1449        - sign of xx_tau[u/v] adjustments
1450        - signs in cost_scat
1451      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1452      * natl_box_adjoint updated and compressed
1453      * 2-level checkpoint switch added
1454        (tested in EXP. 1 of natl_box_adjoint)
1455      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1456    o SVD
1457      * first complete, non-hacked version for SVD calculations
1458      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1459        performed via direct access files admtlm_vector.it????
1460        (via ctrl_[un]pack)
1461      * optimcycle is used for ARPACK iteration counter
1462        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1463      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1464        and add linear transforms where necessary
1465      * controls are initial/final SST, SSS (can be extended; need to check
1466        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1467    o mdsio: filename info to both stderr, stdout
1468    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1469      from sign change
1470    
1471    checkpoint55j_post
1472    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1473      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1474    o add consistent build directories and .cvsignore files to verification
1475    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1476    o make all subroutines 30 or less characters in length for certain older
1477      compilers to work (a thorough search only turns up two routines in
1478      pkg/ptracers)
1479    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1480      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1481    
1482    checkpoint55i_post
1483    o change arrays for total vertical diffusivity (2.D if explicit,
1484      3.D if implicit) ; each ptracer uses its own background value.
1485    o added mnc/NetCDF output capability to ocn_compon_interf
1486      - added bits to verification/cpl_aim+ocn so that it can run on
1487        ITRDA and other clusters without the mpirun "-wd" option
1488    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1489      configuration
1490    o give MNC the ability to create additional files rather than
1491      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1492      - the default is just less than 2GB which is a practical limit
1493        on many systems
1494    o Compute the non-local term using either KPP vertical diffusivity (=default)
1495       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1496    
1497    checkpoint55h_post
1498    o add verification test "vermix"
1499    o remove all the *_ioinc flags and replace with the single global
1500      outputTypesInclusive flag
1501    o allow to set a vertical profile of vertical diffusivity for T & S
1502    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1503    o useMNC moved from data.mnc to data.pkg
1504    
1505    checkpoint55g_post
1506    o Renaming carbon AD experiments to comply with testreport conventions
1507    o Updating adjoint of Held-Suarez hs94.1x64x5
1508    o Fixing directives for non-ECCO forward_step, after ECCO directives
1509      have been fixed to avoid recomp. of do_oceanic_phys
1510      Works well for global_ocean.90x40x15,
1511      but recomp. issue remains for carbon
1512    o Updating adjoint output for natl_box_adjoint after
1513      pkg/ecco has been modified (see taga c55d_post)
1514    
1515    checkpoint55f_post
1516    o rename to timeave_init_fixed
1517    
1518    checkpoint55e_post
1519    o some delicate re-shuffle of store directives to avoid one
1520      extra call of do_oceanic_physics
1521      affects ecco_the_main_loop.F, do_oceanic_physics.F
1522      checkpoint_lev1_directives.h
1523    o NB: this may break global_ocean adjoint temporarily,
1524      but it is clear how to fix it. Will do later, need this now.
1525    
1526    checkpoint55d_post
1527    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1528    o ecco_cost_weights is modified to 1x1 runs
1529    o modifs to allow observations to be read in as
1530      single file or yearly files
1531    o enable to read exf forcing fields as either
1532      single file or yearly files (flag useExfYearlyFields)
1533    checkpoint55d_pre
1534    
1535    o switch between 2-level and 3-level checkpointing
1536    o add ability of MNC to write local and "partial" (eg. 2D slices where
1537      the full 3D field is never actually stored) arrays to NetCDF files
1538      with the correct (that is, the complete multi-dimensional) set of
1539      array indicies
1540      - used in mom_vecinv() to write the diagFreq output
1541      - tested (demonstrated) in verification/aim.5l_cs
1542    o further mnc-ification
1543      - add verification/lab_sea to the list with mnc setups
1544      - fix undefined mnc v-names in cd_code
1545      - add kpp to mnc output (both snapshot and timeave)
1546    o non-hydrostatic code
1547      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1548        in calc_gw.F
1549      - defaults to viscAh
1550      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1551        friction or Leith) in non-hydrostatic mode, as long as there is
1552        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1553    o pkg/cost
1554      extend simple cost functions to treat time mean quantities
1555      (T,U,V) via cost_accumulate_state from cost_tile
1556    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1557        be 2 times larger than the minimum size the advection scheme requires.
1558        now get a perfect conservation of salt in advect_cs test-exp (updated)
1559    o GGL90 (Gaspar's TKE mixed layer)
1560      - add horizontal diffusion of TKE, requires exchanges in
1561        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1562        default. In OPA there is no horizontal diffusion of TKE but the
1563        mixing coefficients are computed from a horizontal average of TKE of
1564        6 points or so. I think that diffusion has a little more physical
1565        justification.
1566      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1567        was in vain)
1568      - mask tke-variable in ggl90_init
1569    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1570    o fix biharmonic diffusion on CS-grid.
1571    o more obcs stuff
1572      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1573        for reading boundary values. This routine is called from
1574        obcs_prescribe_read
1575      - updated obcs_check
1576      - changed sponge layer relaxation parameter units for days to seconds
1577      - turned off sponge layer by default
1578      - changed argument list of OBCS_CALC to myTime+deltaTclock
1579      - fixed about 35 bugs in obcs_external_fields_load
1580    
1581    checkpoint55c_post
1582    o obcs stuff
1583      - new runtime flags useOBCSprescribe, useOBCSbalance
1584      - re-arranged obcs_calc
1585      - moved exf_getobcs to obcs_prescibe_read
1586        obcs_prescibe_read is called after ORLANSKI stuff
1587        and independent of it (executable can contain all).
1588      - updated obcs_check
1589      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1590        These may be necessary only if tangential velocities are
1591        prescribed at OB, not sure, needs testing.
1592    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1593      which simplifies the calls and passes the ifc check-bounds test
1594    
1595    checkpoint55b_post
1596    o add a 2D scalar, Z location, exchange_2 routine.
1597    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1598      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1599      affects advect_cs results (for the wrong reason): update output.txt
1600    o use a more standard discretization for biharmonic viscosity ;
1601     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1602      affects results of dome set-up: update output.txt
1603    o fix gad_advection.F (CubedSphere part), back to version 1.23
1604    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1605    
1606    checkpoint55a_post
1607    o merged code to
1608      * prescribe/read time-dependent open boundaries
1609        (works in conjunction with exf, cal)
1610      * sponge layer code for open boundaries
1611      * each boundary N/S/E/W now has its own CPP option
1612        (healthy for the adjoint)
1613    
1614    checkpoint55
1615    o up-to-date adjoint of previous breaks
1616      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1617      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1618      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1619      - carbon: * remove tr1-related adjoint verification
1620                * add ptracer as control variable
1621    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1622      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1623    
1624    checkpoint54f_post
1625    o in verification/carbin/ remove experiment related to
1626      ALLOW_PASSIVE_TRACER (array tr1 etc)
1627      code_ad/ input_ad/ results_ad
1628    
1629    o add two new packages
1630      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1631        + subject to optimization (memory)
1632      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1633        + subject to reordering (many GOTOs in the original code)
1634        + so far opps is called for every (i,j) point, and then operates in
1635          the vertical; one may want to reorder the scheme in order operate in
1636          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1637          fields)
1638    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1639      - all verification tests compile and run with linux_ia32_g77
1640      - defaults are compatible with current input files--nothing
1641        should change if you were not previously using MNC
1642      - MNC output has been added in numerous places (eg. timeave)
1643        but there are still a few writes not yet do-able with MNC
1644        (this is in progress)
1645      - flags now allow for either/or/both use of MDSIO and MNC and
1646        documentation will soon follow
1647      - numerous small formatting cleanups for ProTeX
1648    o add version info (via BUILD_INFO.h) to MNC and stdout
1649    
1650    checkpoint54e_post
1651    o add two new packages
1652      - pp81 (Packanowski and Philander, 1981), Richardson number and
1653        stratification dependent mixing
1654      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1655      - these scheme operate in a similar manner as KPP (without ghat, of
1656        course), however there is only one diffusivity that is used for both
1657        temperature and salinity (and passive tracers)ç
1658    o add offline package
1659    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1660      provided by Stephanie Dutkiewicz
1661    o genmake2: add ability to search for C compilers and cleanup test output
1662      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1663    
1664    checkpoint54d_post
1665    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1666    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1667      leading to additional shift by 5 days each year of integration
1668       (i.e. leading to considerable offset over the years)
1669    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1670    o start with no AB and no initial filtering (staggerTimeStep):
1671      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1672    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1673      (external loading & cpl import/export stay in forward_step.F)
1674    o update coupling interface to work with new staggerTimeStep
1675    o change MDSIO ptracers_pickup.
1676    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1677    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1678    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1679    
1680    checkpoint54c_post
1681    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1682      this affects (truncation error) output.txt of test-exp:
1683       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1684    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1685    o change Qnet to always be the net heat flux, (+upward).
1686      affects (truncation error) output of natl_box exp.: updated
1687    o define the max number of passive tracers in PTRACERS_SIZE.h
1688    o start to test mnc routinely in exp0
1689    o add sea-ice loading (sIceLoad) as a new forcing field.
1690    
1691    checkpoint54b_post
1692    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1693       impressive on Altix and Opteron systems)
1694    o diagnostics can now write NetCDF files through the mnc package
1695    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1696    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1697    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1698      affects (truncation error) output of lab_sea & natl_box exp.: updated
1699    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1700    
1701    checkpoint54a_post
1702    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1703    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1704    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1705    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1706      + internal_wave (shift in writing cg2d_ini_res)
1707    checkpoint54a_pre
1708    
1709    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1710      - modified verification/lab_sea and natl_box_adjoint accordingly
1711    
1712    checkpoint54
1713    checkpoint53g_post
1714    o prepare splitting of thermodynamics: store convect.counter in common block
1715    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1716      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1717    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1718    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1719    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1720    o restore adjointability
1721    
1722    checkpoint53f_post
1723    o modifications that affect AIM experiment results (update output.txt):
1724      - no advection of S at top interface Nr (pkg/generic_advdiff)
1725      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1726    o AIM pkg:
1727      - include stability function into surf.Flux derivative relative to Tsurf
1728      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1729    
1730    checkpoint53e_post
1731    o merged cylindrical coord configuration
1732    o added rotating_tank experiment
1733    checkpoint53e_pre
1734    
1735    checkpoint53d_post
1736    o faulks upgraded: re-generate output.txt that have changed:
1737       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1738    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1739    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1740    o added Sadourny discretization of Coriolis
1741      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1742      - re-enabled use of omega3 (useAbsVorticity)
1743    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1744      vector-invariant equations
1745      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1746    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1747      hopefully without new bugs
1748      - still to do: biharmonic friction for non-hydrostatic w
1749    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1750    o regenerated output for global_ocean_ebm (using -ieee)
1751    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1752      of mom_common/
1753      - simple re-arrangement of instructions within computing loop
1754    checkpoint53d_pre
1755    
1756    checkpoint53c_post
1757    o new version of coupler for AIM+thSIce and Ocean models
1758     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1759     - land: change Evaporation of snow
1760     - aim with thSIce: fix bug in snow-precip.
1761    o changes to calc_gw.F
1762     - bug fix for w^2 term near the bottom boundary
1763     - (hopefully) improve the lateral slip boundary condtions for use with
1764        partial/looped cells
1765      - because the bug fix changes two verification experiments anyway (exp5
1766        and plume on slope), change the lateral boundary condition from half slip
1767        to the value of no_slip_sides
1768    o ebm package wasnt quite up to the parallel task. Fixed that.
1769    o Adjoint of EBM package + verification
1770      * TLM OK
1771      * ADM not sufficient accuracy yet (needs further testing)
1772    
1773    checkpoint53b_post
1774    o Commiting new energy balance model to repository
1775      * package is pkg/ebm
1776      * verif. is verification/global_ocean_ebm
1777      * references are in ebm_driver.F
1778    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1779    C        Global thermohaline circulation. Part I:
1780    C        Sensitivity to atmospheric moisture transport.
1781    C        J. Climate 12(1), 71-82
1782    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1783    C        Global thermohaline circulation. Part II:
1784    C        Sensitivity with interactive transport.
1785    C        J. Climate 12(1), 83-91
1786    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1787    C        Destabilization of the thermohaline circulation
1788    C        by atmospheric eddy transports.
1789    C        J. Climate 7(12), 1870-1882
1790    o Will need long integration testing.
1791    checkpoint53b_pre
1792    
1793    o created pkg/mom_common in preparation for variable viscosity code
1794    o renamed and split ini_mnc_io
1795    o pkg/land: only liquid water can diffuse or run-off
1796    o AIM using land: soil wetness availability account for snow
1797    o added printMapIncludesZeros to EEPARMS namelist
1798    
1799    checkpoint53a_post
1800    o restore TAMC compatiility for exf_constants.h
1801      (no usage of _d in .h)
1802    o Additional storing in KPP in an attempt to fix
1803      TAMC problem with adjoint of KPP code.
1804      (no success...)
1805      Identical code works fine with TAF.
1806    o Fixed verification/natl_box_adjoint experiments.
1807      Initial conditions for Experiments 4 and 5 are now
1808      set to "SEAICE_initialHEFF=0", which is more reasonable,
1809      and hence gives results closer to that of Experiment 2.
1810      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1811    
1812    checkpoint53
1813    o stable checkpoint with up to date adjoint
1814      TLM tests only run for 1st grdchk at the moment. Its unclear if
1815      this is a code problem or a problem with resetting code for g_
1816      variables that is being autogenerated wrong.
1817      Otherwise:
1818       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1819       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1820         are both still in chaos following their security messes.
1821    
1822    checkpoint52n_post
1823    o various build (mostly genmake2) changes including:
1824      - ability to build/run more easily within Cygwin and MacOS X
1825      - more complicated Makefiles with a stronger dependence on Gnu Make
1826    o pkg/seaice modifications
1827      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1828        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1829        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1830      - changed proxy for geostrophic velocity and updated
1831        verification/lab_sea/results/* accordingly
1832      - removed ADI dynamic solver from pkg/seaice
1833      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1834        they caused a segmentation fault under certain circumstances
1835      - removed unused field WATR
1836    o bug fix in exf-package:
1837      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1838         now reflect that.
1839    o small fixes in the cal-package:
1840      - set reference date to first of January for the 'model'-calendar
1841      - failing of cal_CheckDate in cal_FullDate now actually results in a
1842        warning
1843    o small modifications in exf-package to increase flexibility:
1844      - change climtempfreeze from a constant to a runtime parameter that
1845        is specified in data.exf_clim (default = -1.9)
1846      - introduce runtime parameter windstressmax (default = 2.0) that is
1847        specified in data.exf
1848    o fix in pkg/thsice:
1849      - update Evap (Tsf changes) to be consistent with Latent heat flux
1850      - maintain snow precipitation unchanged (even if Tsf >=0).
1851     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1852    
1853    checkpoint52m_post
1854    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1855      this does not change any of the results, because myIter=0 in swfrac always
1856      lead to jwtype=2 (the default anyway), but the call makes little sense
1857      as a default
1858    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1859    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1860      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1861    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1862    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1863    o extending useSingleCpuIO option to work with new exch2 I/O format
1864      - old-style, missing-tile I/O is still accessible by defining CPP
1865        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1866    o monitor package can write to NetCDF files and/or STDOUT
1867    o fix re-definition bug in MNC_GRID_INIT_ALL()
1868    o doc/api_reference added
1869      - a framework for building an API Reference Manual using all
1870        the "protex" comments embedded in the code
1871      - see pkg/generic_advdiff, pkg/mnc for examples
1872    o MNC:
1873      - make myThid the last argument for all subroutines
1874      - new default for the grid files: NO halos
1875      - add useMNC and other run-time flags
1876      - separate per-file-group handling of the unlimited dimension
1877      - early initialization of MNC w/ flags read at the eeboot stage
1878        and lookup tables set in initialize_fixed
1879      - write all MNC output to a freshly-created directory
1880    o thermodynamics sea-ice (thsice) is now tested with testreport.
1881    o test exp. advect_cs: use the standard cs32 grid ; update output.
1882    o Added functionality to grdchk:
1883      pick global i,j,k position (or nearest wet) where to perform check.
1884    
1885    checkpoint52l_post
1886    o new land formulation:
1887      a) use ground enthalpy as prognostic variable to ensure exact
1888         energy conservation.
1889      b) account for water temperature and for latent heat of freezing
1890         in all processes (rain, run-off, ground storage)
1891      c) compute surface and ground temperature implicitly.
1892    o aim_v23 modification for new land model:
1893      a) Treat separately land / ocean / sea-ice surface fluxes
1894         to allow implicit computation of land & sea-ice surface temp.
1895      b) add snow precipitation.
1896    checkpoint52l_pre
1897    
1898    o fix problem (when 1 tile is empty) in min/max monitor.
1899    o fix bug in timeAve (u,vZetatave in common block)
1900    o no restoring terms under ice for pkg/seaice
1901    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1902    o bug fix for pkg/seaice pickups
1903    o change MNC call locations and add coordinate attributes
1904    o mask vorticity at the corner ; affects global_ocean.cs output
1905    o fix ini_curvilinear_grid ; test CS experiments with mpi
1906    o aim.5l_cs: modify sea-ice fraction input file ; update output
1907    o exf: Adding simple range check routine for exf fields after read
1908    
1909    checkpoint52k_post
1910    o removed top-level directory "diags"
1911      - we migrated these functions to pkg/timeave a long time ago
1912    o fixed bug introduced in pkg/monitor
1913    o accuracy ctrlprec = 32 insuffient for gradient checks using
1914      averaged fields (I/O via cost_averages)
1915      -> use ctrl.h in active_file*.F to control I/O precision.
1916    o paramter list of CALL ADTHE_MAIN_LOOP
1917    o added initial do_the_model_io to ecco
1918    o set all ...Freq to zero after cost_final
1919      taveFreq, dumpFreq, pChkptFreq
1920    o MAIN and ECCO differentiability restored
1921    
1922    checkpoint52j_post
1923    o fix nchklev in tamc.h for global_ocean...
1924    o Bringing flow and store directives up-to-date
1925    o Really weird thing!
1926      call do_the_model_io from the_main_loop with parameters
1927      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1928      TAF places a faulty re-call of initialise_varia
1929      after cost_final call which should not be there!
1930    checkpoint52j_pre
1931    
1932    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1933      error messages
1934    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1935    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1936      debug output
1937    o modfied mdsio_writefield.F to handle non-global files under exch2
1938    o update AIM Cubed-Sphere exp (aim.5l_cs):
1939      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1940    o update AIM Equatorial Channel exp:
1941      use standard aim_v23 pkg and change the SST fields to be more realistic.
1942    o globalFile now works with exch2
1943    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1944      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1945    o limit timeave output for hi-res integrations
1946    
1947    checkpoint52i_post
1948    o removed CPP_EEOPTIONS.h from verification/*/code
1949    o updated the tiling for global_ocean_pressure
1950    checkpoint52i_pre
1951    
1952    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1953      the old pkg/aim).
1954    
1955    checkpoint52h_pre
1956    o shortened offending lines in exch2_send_rx?.template
1957    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1958    o genmake2: add build & execute test for NetCDF code
1959    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1960      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1961    o added useSingleCPUIO flag to monitor.F and mon_out.F
1962    o added temporary hack for sea-ice dynamics on the cube:
1963      metric terms are ignored and it is assumed that
1964      there is no sea-ice on cube faces 1, 2, 4, and 5.
1965    
1966    checkpoint52f_post
1967    o added exch2 cube routines to pkg/exch2
1968    o modified hs94.cs-32x32x5 to use it
1969    o added new grid files to hs94.cs-32x32x5
1970    checkpoint52f_pre
1971    
1972    checkpoint52e_post
1973    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1974      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1975    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1976      to work with implicit vertical advection and AB ;
1977    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1978    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1979     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1980    checkpoint52e_pre
1981    
1982    o fix bug in impldiff when Nr=1 or Nr=2.
1983    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1984    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1985    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1986      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1987    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1988    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1989    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1990    
1991    checkpoint52d_post
1992    o re-tiled many expts to allow comparison in multi-processor mode
1993      - updated output accordingly
1994      - changed hs94.128x64x5 to use intial T from file rather than use the
1995        random number generator
1996    o add infrastructure in model routines for fizhi and gridalt packages
1997    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1998    o changes to permit hi-res, cubed-sphere, configuration
1999      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2000      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2001      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2002        of surface winds for the cube
2003      (A verification experiment, based on global_ocean.cs32x15, but with
2004       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2005       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2006       complete with example surface forcing files and matlab scripts to look
2007       at the output and compare it with that of global_ocean.cs32x15.)
2008    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2009       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2010       to conform to the common rule.
2011    o check-in the first version of the coupler + interfaces for multi-components
2012       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2013       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2014       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2015       - ocean and atmos. share the same horizontal grid (no interpolation).
2016       - exchanges between component and coupler is done in forward_step
2017    o new verification experiment, cpl_aim+ocn:
2018       coupled ocean - AIM atmosphere on cs32 grid.
2019    
2020    checkpoint52d_pre
2021    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2022    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2023    
2024    checkpoint52c_post
2025    o Fixing OPTIONS files for use of exf:
2026      - ALLOW_ECCO not needed
2027      - ECCO_CPPOPTIONS.h should not be included from
2028        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2029        as has been the case in the past
2030      - All cal/exf related options are currently set in
2031        single header file. Should remain so until we
2032        agree on a consistent new policy.
2033    o Removed all CPP options for cal package.
2034      cal has no more CPP options.
2035    o modified STOREs in GAD_ADVECTION
2036    o corrected key comp. for passkey
2037    
2038    checkpoint52b_post
2039    o new version: "thsice" of thermodynamic sea-ice pkg:
2040     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2041     - modify fluxes but do not change theta directly;
2042     - light cleaning of bulk_force pkg (still needed with thsice).
2043     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2044       + output_thsice.txt to test thsice & bulk_force pkgs.
2045    o put back grid & coriolis monitor output.
2046    checkpoint52b_pre
2047    
2048    o call "do_the_model_io" at the beginning (=> dump initial state)
2049    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2050    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2051      (need info on NUMBER_OF_PTRACERS)
2052    o missing PTRACERS headers in some routines
2053    o default tamc.h in pkg/autodiff supposed to crash
2054      to ensure proper customization
2055    
2056    checkpoint52a_post
2057    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2058      - moved surfaceTendencyTice from pkg/seaice to main code
2059      - subroutine FREEZE_SURFACE now limits only surface temperature
2060        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2061        => new output.txt for global_ocean.cs32x15 & global_with_exf
2062      - keep the old version of FREEZE for backward compatibility;
2063        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2064      - corresponding modifs for TAF directives
2065    o added surface flux output variables to TIMEAVE_STATVARS
2066    o time-averaged output for pkg/ptracers
2067    o fix problem with ECCO-related divided adjoint
2068      snapshot file was missing some ad-variables,
2069      but no warning issued by TAF
2070    
2071    checkpoint52a_pre
2072    o some bug fixes for #undef REAL4_IS_SLOW
2073    
2074    checkpoint52 = ecco_c52_e35
2075    o after testing adjoints of checkpoint51u_post
2076    
2077    checkpoint51u_post
2078    o this is the post-merge tag of the ecco-branch
2079      (needs another clean checkout and re-testing)
2080    o various natl_box_adjoint configs and results
2081      but no input fields
2082    o obcs adjoint not yet merged!
2083    o adding ECCO global 1x1 and 2x2 degree configs
2084    o updated/extended some store directives for seaice
2085    o pkg/ecco now containes ecco-specific part of cost function
2086    o top level routines the_main_loop, forward_step
2087      supersede those in model/src/
2088      previous input data.cost now in data.ecco
2089      (new namelist ecco_cost_nml)
2090    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2091    
2092    checkpoint51t_post
2093    o this is the pre-merge tag of the ecco-branch
2094    
2095    checkpoint51s_post
2096    o cleanup: removed various obsolete #define-s
2097    o pkg/grdchk
2098      - renamed 'ph-grd 3' to 'grad-res'
2099      - merged from ecco-branch
2100        (remaining bug fixes for obcs gradient checks)
2101      - additional high-precision output for testreport
2102        (grep for 'precision_grdchk_result')
2103    
2104    checkpoint51r_post
2105    o cleaned up or removed CPP_OPTIONS.h files
2106    o updated results for some of the tests to reflect the new
2107      optfiles (-ieee: -O0 instead of -O3)
2108    
2109    checkpoint51q_post
2110    o cd_code:
2111      - moved cd_scheme.F -> cd_code_scheme.F
2112      - separate read_checkpoint from cd_code_ini_vars.F
2113      - separated cd_code part from write_checkpoint
2114      - updated AD_SOURCE, generated .flow
2115      - added CD_CODE_VARS.h to the_main_loop
2116      - Moving cd_code specific store dir.s to pkg/cd_code
2117    o ctrl package totally restructured
2118      - pack/unpack now optional and decoupled from
2119        xx_/adxx_ I/O
2120      - ctrl_pack/unpack cleaned
2121        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2122      - confined inclusion of AD_CONFIG.h to where necessary.
2123    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2124    
2125    checkpoint51p_post
2126  o create initial cd_code package  o create initial cd_code package
2127      - WARNING: the initialization of fields within packages
2128        is broken because INI_FIELDS (where READ_CHECKPOINT is
2129        called) is called *before* PACKAGES_INIT_VARIABLES.
2130        This seems to be backwards since
2131        1) its important to initially zero the entire field including
2132           the "halo" region
2133        2) zeroing needs to be done *before* reading pickup info
2134           and the pickup call might or might not happen in any
2135           particular run
2136      - this needs an overhaul for R2
2137  o cleanup verification/*/code/GMREDI_OPTIONS.h  o cleanup verification/*/code/GMREDI_OPTIONS.h
2138  o cleanup testreport  o cleanup testreport
2139    

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