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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.845 by jmc, Thu Jun 21 18:34:24 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8      scheme and the corresponding test case (under front_relax dir). For now,
9      only available with Skew-flux form and not yet tested in realistic set-up.
10    o seaice adjoint
11      * add AREA, HEFF, HSNOW as control variable
12        (should not change lab_sea results)
13      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
14    
15    checkpoint59d
16    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
17     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
18     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
19    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
20     and change default value of parameter "GM_Small_Number";
21     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
22       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
23       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
24    o pkg/ecco: cost function when applying pkg/smooth to controls
25    o pkg/ctrl: add forcingPrecond run time parameter
26    o pkg/seaice:
27     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
28     - fix bug in metric terms of u-equation in LSR solver (implicit part),
29       changes verification/lab_sea
30     - rearrange implicit part of u-equation in LSR solver to make it easier to
31       read, understand, and debug. This causes changes at the truncation level.
32     - fix (serious) bug in the boundary conditions (sign error in the implicit
33       part) of the LSR solver. Changes all LSR results.
34     - fixed problem with HSNOW initialization to avoid thick snow when AREA
35       is initilized with small values - does not change lab_sea results.
36     - added HsnowFile initialization capability
37    o pkg/smooth: addition to model/src and pkg/ctrl so allow
38     initialization of pkg/smooth and application to control vector
39    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
40    o dependencies: pkg/profiles requires pkg/cal
41    o pkg/profiles:
42     - added option ALLOW_PROFILES_GENERICGRID
43         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
44         that interpolation information (grid points and coefficients) is provided
45         within the netcdf input files.
46         -> sample matlab scripts can be found in MITgcm_contrib/gael
47         that allow you to prepare netcdf input files.
48     - also modified: cleaner include statements, cleaner error print statements,
49       cleaner stops when error, and more tests of the netcdf input files consistency.
50    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
51    o pkg/seaice:
52     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
53       requires a new routine: seaice_diagnostics_fill.F
54     - make sure that seaice does not move if not forced (pressure replacement
55       method, Hibler and Ip, 1995), changes results
56     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
57     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
58       It is turned off by default (=-1.), because it changes the results.
59     - make it possible to read AREA from a file, too.
60    
61    checkpoint59c
62    o add S/R and diagnostics for oceanic mixed-layer depth
63    o move GMRedi call after all vertical mixing schemes (including KPP)
64    o pkg/thsice:
65     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
66      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
67    o pkg/obcs:
68     - bug fix for balance code
69    o pkg/seaice:
70      - allow values of SEAICE_elasticParm > 1
71      - add new parameter SEAICE_evpTauRelax as an alternative
72        to SEAICE_elasticParm
73      - make lsr boundary conditions free slip (by default), changes result
74      - add code for no slip boundary conditions for lsr
75      - set minimum of zeta to zero (and not 4e8) (changes results)
76      - add a cap on AREA after advecting AREA if seaice_growth is not called
77    o change calculation of Visbeck K:
78      - no longer depend on tapering scheme; instead, compute slope (limited
79        by GM_maxSlope). this is equivalent to what was comuted before with
80        clipping or linear tappering.
81      - fix vertical averaging (wrong by 1/2 level)
82      - leave the old version (but will not be maintained) within
83        #ifdef OLD_VISBECK_CALC / #endif
84      - update output of exp. ideal_2D_oce
85    o change error catch in calc_r_star to improve vectorization
86    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
87      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
88    o adjoint:
89      Re-organized adjoint checkpointing according to Matt Mazloff
90      (but with modifs/completions/cleanups)
91      Storing is now bundled into large arrays to optimized I/O
92      (and second step in cleanup of the_main_loop)
93    
94    checkpoint59b
95    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
96      - export/import (between ocean & coupler) fields needed for ocean DIC.
97    o pkg/seaice:
98      - get rid of three more exchanges seaice_calc_viscosities (required
99        different loop boundaries in seaice_lsr and seaice_ocean_stress)
100      - bug fix in seaice_ocean_stress (update of lab_sea required)
101      - reduce loop boundaries to necessary minimum also in seaice_evp
102      - go back to the old way of computing deltaC/Z as the adjoint likes that
103        better
104    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
105      passive tracer to an Age Tracer) + update output.txt
106    o pkg/exf:
107      - implement A-grid / C-grid selection for wind-stress input files.
108      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
109      for now, in exf_bulk_largeyeager04.F only :
110      - change implementation for case where windspeed + 2. components wind-stress
111        are read-in. AND use rhoConstFresh to convert evap.
112    o pkg/seaice:
113      - use correct EXCH_UV for wind-forcing (on A-grid).
114      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
115        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
116    o pkg/exf:
117      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
118      EXF_INTERPOLATION:
119      - merge global_with_exf/code version of exf_interp_read.F
120        to the main code ;
121      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
122        reading the file ; Important: This options needs to be defined to recover
123        previous code.
124        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
125      - no longer loose real*8 precision along the way when using exf_iprec=64.
126    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
127      - change discretisation of evp-solver in order to avoid another exchange
128        (changes lab_sea) and clean up a little
129      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
130        help the adjoint (this also changes the results slightly)
131      - add a few "_d 0" where they had been missing in seaice_evp.F
132      - cleaning up: remove unused seaice_calc_rhs.F
133    o pkg/exf: some cleaning-up:
134      - change various "constants" into runtime parameters
135      - cleaned-up Large&Yeager04 routine which should eventually
136        replace exf_bulkformulae.F (changed names of S/R and CPP)
137        and merged various ALLOW_ATM_WIND options
138     only used with thsice pkg (in thsice_get_exf.F):
139      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
140        which are used when useStabilityFct_overIce=TRUE (= the default)
141      - change default values of ice & snow emissivity and scale downward LW
142        by ice & snow emissivity.
143    o pkg/thsice:
144     fix few little problems, in thsice_calc_thickn.F:
145      - growth vertically (and not laterally) if iceFrac == iceMaskMax
146      - melt only laterally if hIce < hThinIce (as the comments say)
147      and in thsice_extend.F:
148      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
149      - start to form ice as soon as the minimum ice-volume is reachable.
150     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
151      and cpl_aim+ocn
152    o pkg/kpp
153     - move computation of surface related input fields to KPP into a new
154       subroutine kpp_forcing_surf.F
155     - remove wrong (within bi,bj loops) EXCH calls.
156     - little cleaning (add argument myThid in last position, cvs header ...)
157     - for now, fix conservation problem by exchanging KPPviscAz (may not
158       be the best fix)
159    o pkg/seaice
160     - check for inconsistent evp parameter/cpp-flag combination
161     - remove leftover errIO flat for obsolete name list error handling
162    o OpenAD
163     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
164    
165    checkpoint59a
166    o pkg/seaice: some parameter clarifications and a little bit of clean up
167    o pkg/thsice: rename run-time parameters:
168       himin       -> hIceMin
169       himin0      -> hThinIce
170       hihig       -> hThickIce
171       i0          -> i0swFrac
172       transCoef   -> bMeltCoef
173       frac_energy -> fracMelting
174      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
175       with default values (for now) that do not change the results.
176      remove old version of thsice vars advection in pkg/seaice.
177    o in FFIELDS.h:
178      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
179      - make pLoad & sIceLoad always available (but still only used if
180         ATMOSPHERIC_LOADING is #define).
181    o pkg/kpp: replaced _KPP_RL with _RL
182    o bug fixes for vertical diffusivity computations when both KPP and
183        3D diffusivity arrays are used.
184    o pkg/seaice: fix bug in evp solver, while doing that
185      - change (improve?) discretization of stress computations for both
186        cgrid-lsr and evp solver
187      - add a new routine to compute strain rates
188      - the above changes lab_sea results
189      - add no slip conditions for evp solver (off by default), lsr-version
190        may follow
191      - fix exchange for shear at Z-points (does not change lab_sea)
192      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
193        (to force the user to pick a time step since there is not "safe" way
194        of choosing it)
195      - add principal stress diagnostics
196      - rearrange fields for evp a little to avoid having to call a: too many
197        exchanges and b: exchanges for stress trensor components which we do
198        not have.
199      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
200        of evp, complete rewrite for lsr case (latter is does not yet work
201        in all cases)
202    o pkg/kpp: add code to have mixing in shelf ice caverns
203      - add myThid to all kpp routines (long overdue)
204    
205    checkpoint59
206    o pkg/exf:
207      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
208        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
209      - move exf header files from lower_case.h to UPPER_CASE.h ;
210        add missing cvs Header & Name
211      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
212      - add namelist param. selectStressGridPosition, exf_monFreq
213      - retire many _CLIM routines, and remove data.exf_clim
214        + params moved to data.exf
215        + climsst, climsss now handled by exf_set_gen, i.e.
216          climss?period=0 refers to constant field,
217          climss?period=-12 to monthly forcing
218      - split up namelists in data.exf
219    o pkg/seaice:
220      - remove seaice_exch and seaice_exch_uv
221      - remove superfluous exchange of theta
222      - add myThid to seaice_budget_ocean/ice
223      - add new interface for atmospheric wind forcing (C-grid only)
224        + new routine
225        + two new field (taux, tauy for stress over ice)
226        + removed one global field (DAIRN) for C-grid case only
227    o pkg/thsise
228      - 2nd set of modifs for thsice adjoint in conjunction with exf
229    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
230    
231    checkpoint58y_post
232    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
233      vertical diffusivity, similar to that in MOM4; turned on using
234      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
235      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
236    o Added capability for 3D specification of background vertical diffusion
237      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
238      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
239      "data" file that contains the 3D vertical diffusivity coefficients.
240    o ice dynamics (pkg/seaice) with thsice thermodynamics:
241      - add code within pkg thsice to advect & diffuse sea-ice fields
242      similar to (and will replace) what has been added in  seaice_advdiff.F,
243      but: - conserving Mass, Heat & Salt.
244           - better when using non-linear advection scheme (not yet fully tested)
245           - can also be used in atmospheric set-up (for now, only the diffusion).
246    
247    checkpoint58x_post
248    o IO option for global-file compact format:
249      - add options when generating topology (utils/exch2/matlab-topology-generator)
250      - add I/O capability (pkg/mdsio).
251      - adapt utils/matlab/rdmds.m to read this format.
252      for now long-line format not yet supported by pkg/mdsio (& exch2).
253    o shelfice: add a few diagnostics
254    
255    checkpoint58w_post
256    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
257      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
258      (and replace horiVertRatio in NH code).
259      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
260                         and tutorial_plume_on_slope (sensitive to truncation)
261    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
262      directly to drive seaice model (C-grid only)
263    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
264     - reintroduce computation of wind from stress,
265     - compute tau (in exf_bulkformulae.F) from windstress averaged to
266       mass points to avoid tau = 0
267     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
268    o rdmnc.m: make it work with "global" files created with gluemnc
269    o rdmnc.m : some improvements in dealing with singleton dimension
270      (tested on all testreport mnc output files).
271    o genmake2: disable pkg/profiles if netcdf test fails.
272    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
273    o move call to cal_readparms up to make calendar parameters/variable available
274      to all packages
275    
276    checkpoint58v_post
277    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
278      useDynP_inEos_Zc tested.
279    o pkg/exf: changes to properly interpolate/mask/scale initial fields
280    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
281      and portions thereof.  See read_cs.txt for description and examples.
282    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
283      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
284      following the great-circle arc between those 2 points.
285    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
286      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
287    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
288     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
289     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
290     - still needs work (not working with some options ; efficiency to improve)
291       and serious testing.
292     - use this scheme for temperature & salinity in 2 advection test exp.:
293       advect_xy & advect_xz, respectively.
294    
295    checkpoint58u_post
296    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
297    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
298    o testreport: add option "-skipdir" to skip some test.
299    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
300      momentum calculation.
301    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
302    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
303      remove checkpoint.F and the_correction_step.F (no longer used);
304      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
305    o add option (linFSConserveTr) to correct for tracer source/sink due to
306      Linear Free surface
307    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
308    o pkg/thsice: fix reading mnc-pickups
309    
310    checkpoint58t_post
311    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
312    o pkg/mdsio:
313     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
314       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
315       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
316     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
317     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
318       either MDS_READ_FIELD or MDS_WRITE_FIELD )
319     - new S/R (to replace MDSWRITEMETA), which allows to write more
320       informations (variable names, time ...) to meta files.
321     - modify rdmds.m to give back the meta file content.
322    o pkg/diagnostics: change vertical interpolation to be safer, and more
323       flexible (define p-levels to interpolate to in data.diagnostics);
324      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
325       diagnostic pointer.
326    o pkg/seaice: more cleaning up of seaice_growth, added many comments
327    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
328    o fix multi-category seaice:
329     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
330       SEAICE_MULTICATEGORY
331     - fix short wave heat flux
332    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
333       and allow to use EVP solver. Change forward lab_sea: test both EVP
334       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
335    o Initial check-in of lab_sea adjoint
336      (very similar to natl_box_adjoint/code_seaice)
337      * used C-grid and EVP solver
338      * used KPP, GM/Redi
339      * uses inAdExact=.TRUE.
340      * gradient checks fail for both ADM and TLM
341        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
342        f.d. gradients actually seem more problematic than ADM, TLM gradients;
343        issue is related to forward mismatch between g77 an ifort
344    o pkg/seaice: overhaul of thermodynamics
345     - growth.F and groatb.F are replaced by new routine seaice_growth.F
346     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
347     - move a few global fields out of SEAICE.h into seaice_growth.F and
348       make them 2D (FICE/QNETO/ ...)
349     - remove FO (it is the same as QNETO)
350     - introduce a few local fields to avoid modifying external fields such
351       as atemp, etc.
352    
353    checkpoint58s_post
354    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
355      changed exf_set_gen.F so that
356        genperiod=0 means input file is one time-constant field and
357        genperiod=-12 means input file contains 12 monthly means
358    o CG2D: use pre-computed solver main-diagonal (stored in common block);
359      this affects truncation error ; generate new output file for exp. which
360      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
361        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
362        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
363        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
364        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
365        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
366    o start implementation of deep-atmosphere and anelastic formulation
367    o verification: remove 2nd copy of input files and use script "prepare_run"
368      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
369    o mom_common/vecinv/fluxform: fix a few initialisation isssues
370    o profiles: fix for multithreaded case
371    
372    o diagnostics: rename few diags:
373      s/'PRESSURE'/'RCENTER '/g
374      s/'TICE    '/'oceFreez'/g
375      s/'TAUX    '/'oceTAUX '/g
376      s/'TAUY    '/'oceTAUY '/g
377      s/'SWFLUX  '/'oceQsw  '/g
378      s/DIFx/DFxE/g
379      s/DIFy/DFyE/g
380      and add few ocean-forcing diagnostics:
381      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
382    o modifications to pkg/seaice/growth.F and budget.F, which change results of
383      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
384      as actual snow thickness.  It now refers everywhere to effective snow
385      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
386    
387    checkpoint58r_post
388    o modifications to pkg/seaice/growth.F, which change results of
389      lab_sea experiment: fixes pertain to melting snow over open water, to
390      masking EVAP under sea ice, and to using the correct AREA variable for
391      computations of EVAP, PRECIP, HSNOW, and GHEFF
392    o add ability to read bathy, salt, and theta using MNC (off by def)
393    o add flooding algorithm and advection of HSNOW for pkg/seaice;
394      both are turned off by default and do no change any results
395    o seaice advection with pkg/thsice: a step toward the use of non-linear
396      advection scheme, but #ifdef or commented out for now (requires more EXCH).
397    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
398      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
399      in natl_box (affects results @ truncation level: update output.txt)
400    o multi-threading and IO:
401      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
402      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
403        (needed to work with SingleCpuIO): tested in all verif. exp.
404    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
405      affects the results (but none of the verification test uses this scheme).
406    o Adding some pkg/diagnostics capability to pkg/seaice
407      (will certainly be subject to changes)
408    o ctrl: adding new control variables:
409      lwflux, lwdown, evap, snowprecip, apressure, runoff
410    
411    checkpoint58q_post
412    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
413      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
414      high_res_cube configuration by 4% on Columbia.
415    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
416      add (in global_with_exf/code) a version of EXF_INTERP_READ without
417      dynamical allocation (seems to work in multi-threaded).
418    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
419      single CPU io) so that TAF does not have to see EESUPPORT.h
420    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
421    
422    checkpoint58p_post
423    o obcs: stop if obcs is used with useCDscheme = .true.
424    o shelfice:
425     - fix a sign error so that no slip at shelfice interface works
426     - remove stop for combination non-hydrostatic code and shelfice. That does
427       not mean, that the results are correct, but at least they are numerically
428       stable
429    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
430    o added adjoint exch routined for all exch*3d* routines
431      and updated flow directives
432    
433    checkpoint58o_post
434    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
435      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
436    o change controling S/R for writing pickup file (new S/R do_write_pickup)
437      and clean-up reading/writing of pickup files.
438    o fix local version of read/write pickup (NH part) in rotating_tank/code
439    o simplify EXCH interface:
440     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
441     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
442    o added the regrid package
443    o shelfice:
444     - add a simple boundary layer scheme to reduce noise
445     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
446    
447    checkpoint58n_post
448    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
449       local variable (not in common block).
450    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
451      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
452      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
453        to work with SingleCpuIO.
454    o add "_d 0" to real constant of pkg/cfc subroutines ;
455       update exp. cfc_exemple & tutorial_cfc_offline output files.
456    o multi-threading and IO:
457      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
458        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
459      - barrier before and after reading.
460      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
461      - avoid using MDS_WRITELOCAL for LAND pkg output.
462      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
463        common-block variables ; Allows multi-threading with master-thread IO.
464    o change default MAX_NO_THREADS from 32 to 4 ;
465      and stop cleanly when MAX_NO_THREADS is too small.
466    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
467    
468    checkpoint58m_post
469    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
470       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
471    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
472       keep global_ocean.90x40x15 (for AD testing) with former secondary test
473       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
474    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
475        add MITgcm_tutorials (= code + all the tutorials)
476    o ecco, option to compute cost for total ssh (mean+anom)
477    o consistent with addition of ptracer and ssh in pkg/profiles
478    o profiles: adding ptracer and ssh
479    o testreport: change multi-test output-file name
480      (from output.txt.{name} to output.{name}.txt)
481    o profiles: now ok for mutli-tiles case
482    o seaice: add 4 parameters for different advection schemes for area,
483      (effective) seaice thickness, enthalphy, and snow height. Their default
484      is the standard parameter SEAICEadvScheme
485    o calc_gw:
486     - add cosFacU in zonal viscous flux (harmonic.visc.).
487     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
488       of tutorial_plume_on_slope.
489    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
490    o calc_gw: true flux-form, account for horizontal grid spacing.
491      update rotating_tank results, but not plume_on_slope (affected at
492      truncation level, 11 digits).
493    
494    checkpoint58l_post
495    o calc_gw:
496     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
497     - remove side-drag for now (need to fix it); update plume_on_slope results.
498     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
499    o commit code to make SST/SSS weights spatially variable
500      (based on either variable in-situ or variable initial T/S weights)
501    o pkg/ecco:
502      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
503        now based on horizontally varying weights wthetaLev, wsaltLev
504      * cost_averagesflags now returns year indices in addition to day, month
505      * sflux balance is performed on annual basis
506        (sflxumm, sfluxmm2, bal_sfluxmm)
507      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
508        including separate counting and multipliers
509    o pkg/rbcs
510      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
511    
512    checkpoint58k_post
513    o testreport:
514     - always build in dir. "build" (if not there, mkdir build instead of building
515       & running in input)
516     - run in dir run (if it exists), in build otherwise.
517     - call prepare_run (if input/prepare_run exists)
518     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
519    o pkg/exf modifications to interpolation and rotation routines for more
520       reasonable treatment of North Pole singularity: for tracers North Pole
521       value is set to northernmost zonal-mean value, for zonal velocity it is
522       set to zero, and for meridional velocity it is set to northernmost value.
523    o pkg/exf/exf_check_range.F
524     - add tile index to diagnostics and move stop statement to the very
525       end of the routine.
526    o pkg/diagnostics: (diagnostics_main_init.F)
527      define title of isomorphic variables according to the current config.
528    o pkg/thsice with pkg/seaice dynamics:
529    - fix domain of computation (interior only, required for exf) and do exchanges
530    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
531    o towards a standard way of dealing with multi-threading in MONITOR
532      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
533    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
534       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
535    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
536    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
537    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
538       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
539    o tracer advection:
540     - clean-up and simplify calc_common_factors.F
541     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
542       advection subroutine (but still not used within DST advection S/R)
543    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
544    
545    checkpoint58j_post
546    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
547      from file (collects calls previously in FORWARD_STEP)
548    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
549    o adjoint store dir. adjusted accordingly
550    o genmake2
551      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
552    
553    checkpoint58i_post
554    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
555      on wind stress (SEAICEstressFactor defaults to 1.)
556    o Total number of Timers is finite (<=40): comment out 2 non-essential one
557      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
558    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
559      on CS-grid: no longer loosing mass.
560    o exf & curvilinear-grid: no longer modify longitude xC & xG.
561    o pkg/ggl90: fix sloppy output and fix a bug
562    o pkg/seaice: added SEAICEuseEVPpickup parameter
563      - Set to false in order to start EVP solver with
564        non-EVP pickup files when using SEAICEuseEVP
565      - fix sign error in diffusion in seaice_calc_rhs
566    
567    checkpoint58h_post
568    * Modifications for bottom topography control
569      o replace hFacC by _hFacC at various places
570      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
571      o add non-self-adjoint cg2d_nsa
572      o update autodiff support routines
573      o re-initialise hfac after ctrl_depth_ini
574      o works for 5x5 box, doesnt work for global_ocean.90x40x15
575    * Adding verification for 5x5 box (4-layer) bottom topography control
576    
577    checkpoint58g_post
578    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
579       used for mean seasonal cycle, mean diurnal cycle); add an example
580       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
581    o pkg/ggl90:
582      - add parameter (minimum surface kinetic energy)
583      - fix bug (avoiding division by zero)
584    o couple pkg/thsice to pkg/seaice:
585      - modify advection in seaice to accomodate new scalar fields to be advected
586      - only muliDimAdection scheme work with seaice/thsice
587      - mapping of thsice-variables to seaice-variables, back and forth
588      - does not break the verification experiments, but does not give the
589        desired results either
590    o pkg/seaice
591      - make (default) second order advection a bit less confusing?
592    
593    checkpoint58f_post
594    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
595      to pkg/seaice):
596      - new routines thsice_map_exf and thsice_get_exf provide the interface
597      - add an additional formal parameter to thsice_solve4temp
598    o pkg/exf:
599      - add new fields wspeed, snowprecip (to be able to couple to thsice)
600      - correct Stefan-Boltzmann constant
601      - new parameter for longwave surface emittance
602      - separate some stuff from exf_bulkformulae into new routines  
603        exf_radiation, exf_wind
604      - add new parameters and constants: longwave emissivity for ocean, ice
605        and snow, evaporation parameters over ice
606      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
607        either wind from stress or stress from wind
608    o pkg/thSIce:
609    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
610    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
611       and THSICE_CALC_THICKN
612    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
613    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
614      to make debugging easier.
615    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
616    o pkg/bulk_force:
617      - clean-up comments and parameters ;
618      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
619    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
620      generate new output for test-experiment: aim.5l_cs.thSI
621    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
622      testreport accordingly
623    
624    checkpoint58e_post
625    o SEAICE_CGRID adjoint done
626    o R_STAR adjoint implemented.
627      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
628      * need to sort out init. of h0facc, etc.
629    o Make pkg/profile fully independent of ecco,cost, etc. stuff
630      to be able to use it in pure forward.
631    
632    checkpoint58d_post
633    o upgrade simple test-experiment to tutorial example:
634     step.1: duplicate the experiment and (step.2) will remove the old copy.
635      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
636      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
637      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
638      tutorial_global_oce_biogeo    <- copy of dic_example
639      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
640      tutorial_plume_on_slope       <- copy of plume_on_slope
641      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
642      tutorial_global_oce_optim     <- empty for now (David ?)
643      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
644     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
645    o correct a sign problem in cost_scat.F
646    o obcs and ptracers: fix boundary conditions for advections schemes
647      with larger stencil
648    o thsice adjoint: start
649    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
650      completeness
651    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
652      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
653    o ptracers adjoint:
654      * avoid extensive recomputatations
655      * fix missing re-init. of gptr (missed by TAF)
656    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
657      me to turn off the excessive output to STDOUT that this package produces
658    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
659      and add those terms in Vector-Invariant formulation.
660    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
661      if the control period (xx_hfluxperiod etc) is 0
662    o in profiles pkg, clean routines and fix details
663    o in ecco pkg, reading ssh data:
664      fix problem in case the model does not start at iter0=0
665    o fix mnc-pickup/restart for ptracers
666    o new package prifiles:
667      code to compute profile-based cost by Gael Forget
668      (modifs in ecco, ctrl, autodiff)
669    o Benign bug fix in initialization (spotted by M. Mazloff) of
670      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
671    
672    checkpoint58c_post
673    o adjoint: finish NLFS adjoint and provide reference output in
674      verification/global_ocean.90x40x15/results_ad_nlfs
675    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
676      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
677      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
678      with SEAICE_CGRID defined.
679    o move calendarDumps from "data" to "data.cal" and clean-up the code
680      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
681    o add useEXF & useCAL flags (for now, set in hard-coded way)
682    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
683      (were missing in NH mode, and wrong in quasihydrostatic mode).
684      waiting for Chris updated version of calc_gw to add those CALLs.
685    o fix bug in quasihydrostatic S/R ;
686      add a test for this option: global_ocean.90x40x15.qshyd
687    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
688      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
689    o add on/off flag useOffLine for package OFFLINE
690    o seaice:
691      - modify advection so that it works also on the C-grid
692      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
693        problem in multi-tile runs with C-grid
694      - add flags for clipping ice velocities and/or masking solver forcing
695      - fix drag (ocean on ice) formulation and a bug that caused noise in the
696        C-grid solver
697      - added a few comments to seaice_diffusion.F
698      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
699        are now exclusive)
700      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
701        required re-ordering the code a little:
702       + make DAIRN global variable (defined in SEAICE)
703       + move computation of the viscosities eta and zeta into a new separate
704         routine (because I need to recompute them in seaice_ocean_stress.F)
705    
706    checkpoint58b_post
707    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
708      update output.txt of exp. aim.5l_cs.thSI
709    o various mnc cleanups and improvements:
710      + shrink lookup tables by factor of ~4
711      + better error reporting when running out of lookup space
712      + able to handle longer path/file names (up to 500 chars)
713    o adjoint:
714      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
715      - TBD: "hidden" mom_vecinv recomp. in dynamics
716    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
717     (allow to differentiate between forcing components using new integer flags:
718      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
719     and add new flag to put Dissipation tendency out of Adams-Bashforth.
720    o ecco
721      - enable trend removal from SSH anomaly obs.
722    o adjoint
723      - a fix for PmEpR when #undef EXACT_CONSERV
724      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
725      - try to fix "hidden" recomp. in forward_step for NLFS
726        (NLFS seems broken sometimes after I checked it in)
727    o seaice:
728     - add c-grid version of the dynamic solver:
729       + three new routines that are the c-grid substitute lsr, dynsolver
730         and ostres
731       + put a few fields that were local to dynsolver into global common
732         blocks, so that I can move the computation of stresses etc into
733         seaice_lsr (saves coding but may break the adjoint).
734     - replace more hardwired parameters by runtime parameters
735     - add ice masks that mask the rhs of the implicit solvers where there
736       is no ice (commented out in seaice_dynsolver, because i am not sure
737       if this works properly), eventually this should replace the clipping
738       of ice velocities in seaice_dynsolver to +/-40cm/s.
739    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
740      include it only where its needed
741    o move balancing of fluxes before the call of external_forcing_surf
742    o seaice:
743      - correct units of turning angles (now they are really in degrees)
744      - move computation of GWATX/Y out of main routine into dynsolver
745      - initialize GWATX/Y in seaice_init
746    o Apply mask on Fresh-Water flux (needed for SSH forcing).
747      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
748    o seaice: add runtime flags for turning angles (default to zero)
749    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
750      and trend from exf forcing and ctrl control adjustments
751    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
752      (since checkpoint57x_post)
753    o change the default rotation period to 86164.s = the Earth rotation
754    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
755      and based on a reference stratification. Tested within hs94.cs-32x32x5.
756    o seaice advection: add code for choosing between the default (2nd order
757      central differences) and multiDim advection schemes provided by
758      pkg/generic_advdiff
759    o seaice:
760      - removed all references to SEAICE_GRID.h fields from
761        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
762        (cubed-sphere configuration will change a little)
763      - grid computations in seaice_init are obsolete now.
764      - cleaned up code a little so that is easier to read (hopefully).
765      - added new (better?) discretizations of default advection and diffusion
766        (turn on with SEAICEuseFluxForm)
767      - replace 1 in 3d global fields by kSurface in growth.F
768      
769    checkpoint58a_post
770    o seaice:
771      - bug fix in advect.F
772    o shelfice:
773      - separate shelfice load anomaly from pload (breaks with time
774        dependent forcing), => introduce constant field shelficeLoadAnomaly.
775        Its default is 0., but it may be computed more cleverly from (unknown)
776        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
777        done offline. A good approximation of the pressure load anomaly is
778        necessary to avoid large initial adjustment processes underneath
779        deep-reaching shelfice.
780      - small fix in ISOMIP shelfice_thermodynamics
781      - add more sophisticated thermodynamics of Hellmer (1989), this is
782        now the default
783      - give a few constants more intuitive names
784    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
785      if bulk formulae are used in long integration (especially EmPmR). Turn
786      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
787      if balancePrintMean, the imbalance that is substracted is printed to
788      STDOUT.
789    o fix bug (typo) in obcs_apply_eta.F
790    o add a new package shelfice which enables us to model the circulation
791      underneath shelf-ice with draughts of hundreds of meters.
792     - works
793     - to do: + include improved thermodynamics
794              + check whether kSurfC (from model/inc/SURFACE.h) can be used
795                instead of new field kTopC
796              + can we use topoFile, Ro_surf and existing code in ini_depth.F
797                instead of new field R_shelfIce and new code in ini_depth.F
798                and ini_mask_etc.F?
799              + adjust vertical mixing schemes?
800    o seaice pkg:
801     - add a cpp-flag to include a simple formula for a salinity dependent
802       freezing point of sea water at the surface
803     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
804       meridional stresses are now different (and hopefully correct)
805    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
806       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
807       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
808    o pkg/diagnostics: add options and parameters for regional-statistics
809       diagnostics ; define regions by reading a region-mask from a file
810       (might add other options later)
811    o pkg/bulk_force:
812     - add option and parameters to use AIM surface-flux formulae.
813     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
814       others forcing fields (defined in PARM05, parameter file "data") are loaded
815       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
816     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
817     - use the right EXCH call for uwind,vwind (to work on CS-grid).
818     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
819       and parameters (note: calcWindStress replaces .NOT.readwindstress).
820     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
821    
822    checkpoint58
823    o add "--embed-source" option to genmake2 which, when the supporting
824      tools can be compiled (as determined by genmake2) will turn on the
825      embed_files package which then embeds the entire MITgcm source code
826      (*.[fFhc] + Makefile) used for the build within the executable
827      - requested by CNH but off by default
828      - adds a paltry <9MB to the mitgcmuv executable in most cases
829      - only writes the output when useEMBEDSRC in eedata is true
830    o clean up 3-dim. relaxation codes:
831      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
832      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
833      * Thanks to Tom Haine for testing!
834    
835    checkpoint57z_post
836    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
837      affects output (@ truncation level) of exp. plume_on_slope ; updated.
838    o fix the pickup behavior for obcs in combination with ptracers
839    o fix a bug in ptracers_external_fields_load
840    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
841      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
842    o transfered surface NH pressure to eta field (if exactConserv).
843    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
844         and update lab_sea output.txt file.
845    o completing 3-dim. relaxation code: additional term
846         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
847      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
848      * At compile time, in "EXF_OPTIONS.h" set
849          #define  ALLOW_CLIMTEMP_RELAXATION
850          #define  ALLOW_CLIMSALT_RELAXATION
851      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
852          tauThetaClimRelax3Dim = 15552000.0,
853          tauSaltClimRelax3Dim  = 15552000.0,
854      * 3 cases:
855          1) Use a constant-in-time 3-dim. field
856          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
857          3) Real-time relax. to time-evolving prescribed field
858    o Adding Laplacian-type smoothness constraint on
859      initial and boundary (forcing) controls (ic, bc)
860      * enable at compile-time via
861        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
862      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
863      * Absolute scale somewhat unclear so far
864      * no area weighting was included since no other cost term does so far
865    
866    checkpoint57y_post
867    First step for a NLFS adjoint
868    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
869    o new init. routines for calc_r_star, calc_surf_dr
870    o still need to deal with ini_masks_etc
871    o testreport seemed happy
872    checkpoint57y_pre
873    
874    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
875    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
876    o add new offset feature to offline pkg (plus minor cleanup)
877    o cfc fixes for final year of integration
878    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
879      be in GCHEM_OPTIONS).
880    
881    checkpoint57x_post
882    o fix testreport Pb in multiple test experiment.
883    o cleanup our namelist syntax in verification:
884      - make it more F95 standards compliant (some work still needed)
885      - allows the vast majority of our tests to work with gfortran
886    o Non-Hydrostatic:
887     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
888     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
889    o Allow to apply AB on T,S rather than on AB(gT,gS):
890     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
891     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
892       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
893     - need a "clever" read_pickup to restart from the other AB formulation
894    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
895    o remove some unused variables (reduces number of compiler warnings)
896    o adjoint
897      * Disable useVariableViscosity for adjoint for time being
898        (there are a number of extensive recomputations)
899      * Initialize certain variables needed for adjoint
900    
901    checkpoint57w_post
902    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
903                 fix the singleCpuIO RS version of MDSWRITEFIELD
904       and add a WARNING if using globalFiles=T with multi-processors.
905    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
906      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
907    o tracer advection scheme:
908      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
909       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
910       was not very convenient).
911      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
912       (further tests needed for the implicit DST & Flux-Limiter schemes).
913    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
914      and sRef for convenience, handy, when you want to initialize
915      ptracers in a large domain with a constant non-zero value. Also,
916      untangle ptracers_init.F a little.
917    
918    checkpoint57v_post
919    o change dome exp. to use variable viscosity in side-drag terms.
920    o remove all the files from the cfc_offline test since they are now
921      incorporated into tutorial_cfc_offline which has been producing
922      identical results for a few days of testing
923    o add new parameter: sideDragFactor to enable half-slip-side BC
924      and change side-drag S/R to use viscosity from mom_calc_visc
925      (can switch back by setting sideDragFactor=0.); affects results at
926      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
927       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
928    o vorticity & strain are now computed without masking, to account for
929      no-slip-side BC in variable viscosity calculation ; mask is applied
930      anyway later on, before computing advection/coriolis terms.
931    o modify exp4 to test new obcs support for reading from external files
932      and for passive tracers
933    o fix behavior of ptracers_monitor when monitor output is written to a
934      netcdf-file; still not independent of monitor.F (writes in the same
935      file).
936    o change default value of tRef (put a uniform, meaningful value for ocean
937      & atmos) and initialize sRef (was missing, as Martin mentioned).
938    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
939      to be proportional to enstrophy dissipation length.  Thus,
940       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
941      This is now consistent with Smagorinsky and with the manual.
942    
943    checkpoint57u_post
944    o OBCS and PTRACERS: add open boundary support for passive tracers
945      - either use homogenous (pseudo) v.Neumann conditions or prescribe
946        OB-values from file; this is not different from the way theta and salinity
947        are treated
948      - however, Orlanski-radiation conditions are not supported, and the model
949        will stop if you use pTracers and Orlanski at the same time.
950      - beefed up the rountine obcs_external_fields_load: now only those open
951        boundary values are overwritten with values from files for which there
952        are really files, otherwise the OB-fields remain untouched. This makes
953        it possible to use different OBs at different ends of the domain (as
954        with EXF)
955    o reduce number of exch calls in shap_filt (s2).
956    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
957      truncation level) 4/5 MLAdjust test results (11&12 digits match).
958    
959    checkpoint57t_post
960    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
961    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
962      same truncation, independent of the face number: affects affects several
963      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
964    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
965      note that biharmonic viscosity + no-slip was not tested in any experiment.
966    o fix bug in non-linear free-surf side-drag ; generate new output for
967      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
968    o make mnc honor the writeBinaryPrec flag for most kinds of output
969    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
970    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
971      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
972    o add brackets in multi-terms sum to get same truncation, independent of
973      the face number (manage to get exactly same value of gU,gV at the cs-edge)
974      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
975    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
976      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
977      a maximum grid-scale Reynolds number.  Also, changes all length calculations
978      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
979      Suggested values of viscosity parameters found in mom_calc_visc.
980      Many new viscosity diagnostics available.
981    
982    checkpoint57s_post
983    o Add clearing-house for viscosity calculations, mom_calc_visc and
984      correct numerous bugs in LeithD and Smagorinsky discretizations.  
985      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
986      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
987      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
988      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
989      The Strain-Tension form is now called with useStrainTensonVisc=.true.
990      ViscAhStrain and viscAhTension are now retired.
991    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
992    o In response to JMC's bug report, genmake2 now ignores any soft-links
993      that it finds in the *current* directory when searching for files.
994      Soft-links found in any other source directories will still work as
995      they did before.
996    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
997      a C routine to unlimit the stack size
998    o mnc-ify pkg/aim snapshot vars
999    o mnc-ify pkg/land as requested by Daniel
1000    o various changes to mnc including:
1001      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1002      - output can now be grouped so that all files within a group
1003          change the ITER portion of their names in lock-step together
1004      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1005          and works with both EXCH1 and EXCH2 (but needs more testing)
1006      - writing works for all verification test cases w/ g77 on Linux
1007    
1008    checkpoint57r_post
1009    o make MNC variable initialization happen earlier
1010    o add diagnostics for (almost) each term of the momentum Eq.
1011    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1012    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1013    o remove MINIMAL_TAVE_OUTPUT option ;
1014      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1015    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1016      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1017    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1018    o add time-dependent SST, SSS control
1019    o cost terms in ecco/ modularized (new cost_generic.F)
1020    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1021    o new infrastructure for seaice model vs. obs misfits in seaice/
1022      * driver from the_main_loop.F is seaice_cost_driver.F
1023      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1024      * gradient check in Exp. 6a of natl_box_adjoint/
1025    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1026      (see README file)
1027    
1028    checkpoint57q_post
1029    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1030    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1031      - bug was reported by Jean-Michel and Ian Fenty
1032    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1033      update exp. cpl_aim+ocn output.
1034    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1035      Needed for high-res. runs with large global files
1036      to be able to limit tapelev size
1037    o Changed some tests for adjoint:
1038      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1039      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1040      * global_ocean.90x40x15/ back to default 3-level checkpointing
1041    o Modifications to enable scripted COMMON to MODULE conversion
1042      * verification/OpenAD/code/ has necessary scripts and description;
1043      * converts, compiles and runs successfully;
1044    
1045    checkpoint57p_post
1046    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1047    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1048      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1049    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1050    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1051      (was already the case for dissipation with mom_vecinv,
1052       and also the case for grad.PhiHyd when staggered-timeStep)
1053      This will allow to put dissipation out-off the AB time-stepping.
1054     Unfortunately, affects truncation error. Update output of exp. that "fails"
1055      (cg2d matching number) and leave the others for later: front_relax(10),
1056      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1057      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1058    
1059    checkpoint57o_post
1060    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1061      (2) its ready to be documented during the 20050801 DocFest
1062    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1063      for ideal_2D_oce and lab_sea on linux_ia32_g77
1064    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1065      in global1x1_tot/code_seaice_adj to access indices 32, 33
1066      (worth another tag)
1067    
1068    checkpoint57n_post
1069    o adding precip control xx_precip 32
1070    o adding swflux control xx_swflux 33
1071    o Replacing 10 forcing penalty cost routines by 1 generic.
1072    o Implementing partitioning in time-mean and variable adjustment
1073      for atmos. state.
1074    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1075    o in natl_box_adjoint:
1076      * updated exp 1 to 10
1077        (but does not have time-mean vs. variable split results yet)
1078    o updated global1x1/*_seaice_adj/
1079      to incorporate latest changes
1080    o enable useSingleCpuIO for mdsio vector routines
1081      (applies in particular to tapelev I/O)
1082    o removed inefficient K-loop in all active_file*control*.F
1083    
1084    checkpoint57m_post
1085    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1086      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1087    o pkg/exch2: filling of face-corner halo regions is optional
1088      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1089    
1090    checkpoint57l_post
1091     tag before updating tutorials (pre-release-2)
1092    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1093       for output and interpolation of input fields onto model grid)
1094    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1095       Affects results of exp. rotating_tank ; update output.txt.
1096    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1097          and taking the square quantity and/or using a fraction-weight field.
1098    o fix aim_diagnostics_init.F mate numbers.
1099    o add mnc output capability to diagnostics/diagstat and update
1100      our cvsignore files for the ACSII output generated
1101    
1102    checkpoint57k_post
1103    o lab_sea now uses diagnostics package and provides a suite of
1104      new EXF diagnostics output.
1105    
1106    checkpoint57j_post
1107    o exf
1108      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1109        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1110        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1111      * extended diagnostics output
1112        - now includes all EXF variables
1113        - hs, hl moved to common block
1114        - separate S/R for diagnostics, called after ctrl vector is added
1115        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1116        - EXFqnet contains true Qnet (i.e. includes qsw)
1117      * updated verif. lab_sea, global_with_exf
1118      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1119        to ensure that diagnostics sees a true EXFqnet
1120    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1121    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1122      several times with different frequencies.
1123    o mnc-ify the thsice package as requested by Daniel Enderton
1124      - the monitor--MNC output needs work
1125      - many attributes need to be added (most are currently blank)
1126    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1127      - many attributes need to be added (most are currently blank)
1128    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1129    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1130    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1131      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1132         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1133    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1134     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1135    
1136    checkpoint57i_post
1137    o Diagnostics package was changed: diagnostic allocation is now deactivated
1138      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1139    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1140      add 1rst Order upwind vertical Shear.
1141    o add a quick fix for A/B checkpointing in OFFLINE mode
1142    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1143      end-run around the C/Fortran linking horror in eesup/src/timers.F
1144    o added pkg/runclock: allows user to terminate run based on wall clock
1145    o added non-hydrostatic scaling parameter: nh_am2
1146    o pkg/my82: futile attempt to make results compiler-independent by adding
1147      some "_d 0", etc. no effect.
1148    o for mnc output, fill the 'T' coordinate var with myTime and create a
1149      separate 'iter' variable for iteration count
1150    o pkg/diagnostics:
1151      add new capability: output of Global/Regional & per-level statistics ;
1152      tested against monitor output (including land & thSIce) on various exp.
1153    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1154    
1155    checkpoint57h_done
1156      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1157      data.diagnostics, data.gchem, data.ptracers) is done.
1158    
1159    o pkg/diagnostics: prepare for Global/Regional statistics.
1160      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1161    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1162      and rename it: DIFFERENT_MULTIPLE
1163    
1164    checkpoint57h_post
1165    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1166    o pkg/diagnostics: change output frequency, now in seconds (instead
1167      of Nb of iterations). This requires to change data.diagnostics.
1168    checkpoint57h_pre
1169    
1170    o in mnc, let the user create the output dir if both mnc_outdir_date
1171      and mnc_outdir_num are false
1172    o add fflags() to pkg/diagnostics which allows one to specify, on a
1173      per-file basis, the file precision [default behavior is unchanged]
1174    o added diagnostics to pkg/kpp, including computation of mixed layer
1175      depth based on a temperature/density criterion
1176    o updated verification/natl_box to test the new pkg/kpp diagnostics
1177    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1178    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1179    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1180      not mnc -- this mistake was found by JMC and is now corrected
1181    
1182    checkpoint57g_post
1183    o add Adams-Bashforth 3rd Order time stepping:
1184      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1185      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1186    checkpoint57g_pre
1187    
1188    o make lambda[Theta,Salt]ClimRelax spatially varying
1189      (default remains spatially uniform constant based on tau)
1190    o added new control variables
1191      * init. uVel, vVel, etanN
1192      * lambda[Theta,Salt]ClimRelax
1193    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1194      (suggested by G. Forget)
1195    
1196    checkpoint57f_post
1197    o add parameter "baseTime" = model base time = time at iteration zero
1198      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1199      account for baseTime shift
1200    o move Coriolis arrays from PARAMS.h to GRID.h
1201    checkpoint57f_pre
1202    
1203    o mnc-ifying the seaice package
1204    o introduced an alternative length scale calculation for use in the limiting
1205      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1206    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1207    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1208      as well as grad(vort3).  Made it compatible with both approximate form
1209      for the cubed sphere and full form of these gradients.  Added flag
1210      useFullLeith to select between approximate and full form.  
1211    o add "d0" in getcon.F to reduce differences between compilers/platforms
1212      update output.txt of exp. fizhi-gridalt-hs
1213    o change port_rand funtion to allow to set the seed.
1214    o fix obscure MNC bug involving conversion between reals and integers
1215      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1216        new version is now more standards-compliant
1217    o adjoint-related modifications
1218      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1219      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1220      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1221    
1222    checkpoint57e_post
1223    o Adding eddy stress controls a la Ferreira et al.
1224    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1225    
1226    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1227      update output.txt of exp. fizhi-gridalt-hs
1228    o add more "Z" dimensions and associated coordinate vars to MNC
1229    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1230    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1231      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1232      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1233      months and years.  Requires pkg/cal.
1234    o diagnostics: add pickup functionality
1235      - off by default for backwards compatibility
1236      - current version only uses MDSIO -- MNC will be added
1237    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1238    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1239    
1240    checkpoint57d_post
1241    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1242    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1243      output from the diagnostics package
1244    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1245    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1246      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1247    o add coordinate variables to the MNC output from the diagnostics package
1248    o change MNC-flags default value: true when useMNC=TRUE
1249    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1250      the ability (off by default) to read the grid information using MNC
1251    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1252    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1253    o do snap-shot diagnostics at the middle of the time-interval (instead of
1254      at the end).
1255    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1256      new test for AIM with thSIce + slab-ocean
1257    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1258    o move state variable diagnostics to the beginning of the time step ;
1259      (note: still needs some work specially for snap-shot diagnostics)
1260      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1261    
1262    checkpoint57c_post
1263    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1264    o generate new output.txt files on faulks with g77 & the new -ieee option
1265    checkpoint57c_pre
1266    
1267    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1268      update output.txt of exp. global_ocean.90x40x15
1269    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1270      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1271    o add saltFlux(+File) forcing capability with periodicExternalForcing
1272    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1273    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1274    o improvements for the MNC output from DIAGNOSTICS:
1275      - correct handling of the unlimitied dimension
1276      - all dims now have associated coordinate variables
1277      - variables located at U, V, and Corner ("Z") points are now written
1278        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1279        *all* data points are output
1280    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1281    o added pkg/seaice/seaice_monitor.F
1282    o mdsio_readfield.F can now read files visible only to master MPI process.
1283    o pkg/seaice: some test code for ice-modified ocean stress
1284    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1285      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1286      spurious negative numbers for precipitation and humidity.  Will cause
1287      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1288    o pkg/ctrl/
1289      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1290        May be enabled via doPackDiag
1291      *  introduce z-scaling of
1292         + gradient (doZscalePack) and
1293         + control (doZscaleUnpack)
1294    o pkg/mdsio/
1295      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1296      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1297    
1298    checkpoint57b_post
1299    o simplify options in diagnostics_fill arguments (remove weird combinations)
1300    o fix MNC coordinate variables so that they now contain per-face index
1301      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1302      general, EXCH2 grids are only aligned to a "local" coordinate system
1303    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1304    o Implement instantaneous output within pkg diagnostics:
1305      setting a negative frequency in data.diagnostics produces
1306     "snap-shot" output (as opposed to time-average if freq > 0)
1307    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1308      NOTE: change ptracer diagnostics name: use 2 characters to work with
1309            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1310    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1311      becomes the coordinate variable for the 'T' dimension
1312    o add CF-style coordinate variables to MNC
1313      - just a first cut:  numbers are meaningless on the cubesphere and
1314        missing along the T axis but otherwise it works!
1315    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1316    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1317    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1318      this is based directly on what the model compute, so that the content of
1319      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1320    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1321    o clean up build options files for SunOS, in particular
1322      - remove -traditional from xmakedepend
1323      - change -xarch=v9 to -xarch=native for f77
1324      - restore use of make (not gmake)
1325      - add CC=gcc if using g77
1326    o changes per discussion of AM, JMC, & EH3 today:
1327      - move redundant "grid" variables out of "state" -- in preparation of
1328        creating proper CF-style coordinate variables and in recognition
1329        that any/all grid variables can be easily copied (eg. w/NCO) from
1330        the grid files into any of the other NetCDF files
1331      - *always* output grid variables with MDSIO (this will eventually be
1332        changed)
1333      - output MNC grid file if useMNC is true
1334    o every instance of _END_MASTER() has been found and replaced with
1335      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1336      preprocessors
1337    o re-arrange diagnostics pkg initialisation:
1338     - allow each package to extend the available diagnostics list
1339     - add some checking and fix small problems (multi-threaded, ...)
1340     - new S/R diagnostics_fill (replace fill_diagnostics):
1341       look through the short list of active diag. (instead of the long list)
1342       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1343    
1344    checkpoint57a_post
1345    o this set of changes restores TAMC compatibility
1346      tested for global_ocean.90x40x15 adjoint on trough
1347      (what a pain)
1348    
1349    checkpoint57a_pre
1350    o some modifs in tools/build_options for sunos
1351    o call ctrl_pack for ctrl at end for optimcycle=0
1352    
1353    checkpoint57
1354    o add horizontal bi-harmonic viscosity for vertical velocity
1355      - new parameter viscA4W (defaults to viscA4)
1356      - affects only non-hydrostatic code
1357      - to be done: no-slip lateral boundary conditions
1358    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1359    o implement Implicit Vertical advection for pTracers
1360    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1361      (implemented also for implicit vertical diffusion & advection)
1362    o OBCS: extend application of tracer open boundary conditions
1363      to a strip beyond the boundary of width Olx/Oly
1364    o add call monitor to TAF set of required calls (flow directives)
1365      and include in natl_box_adjoint
1366    o untangle a few ifdefs related to cost, ctrl, autodiff
1367      untangel a few ALLOW_ECCO_OPTIMIZATION
1368    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1369      (theta2, salt2 in ecco_cost_weights)
1370    
1371    checkpoint56c_post
1372    o OBCS as control variables
1373      - update ctrl_ad_diff.list, obcs_ad_diff.list
1374      - remove balance of obcs controls from default
1375      - fix index bug nobcs in ctrl_init
1376      - fix dummy fields filen in ctrl_pack
1377      - add dummy weights for obcs
1378    o lsopt: comment out fort.94 output
1379    o optim:
1380      - remove unnecessary header files
1381      - adjusted namelists
1382      - add xerbla.F to Makefile
1383    o exf:
1384      - multiple modifications of exf_check_range
1385      - unit change in exf_init_runoff from [m/year] to [m/s]
1386    o mdsio:
1387      - i/o-vector change debugLevel from debLevA to debLevB
1388    
1389    checkpoint56b_post
1390    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1391      is called from DO_THE_MODEL_IO
1392      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1393      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1394      - clean up PTRACERS_WRITE_TIMEAVE a little
1395    o add another verification experiment that tests both the cfc-pkg and
1396      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1397      reactive tendencies treated inline with regular timestepping
1398    o testreport previously did a lousy job of comparing small numbers, so
1399      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1400      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1401      testreport.
1402    o ptracers_monitor: bug fix for MPI
1403    
1404    checkpoint56a_post
1405    o GCHEM: finish reorganizating the package
1406      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1407        (introduces another 3D-array for each passive tracer, but only if
1408        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1409        gchemTendency is not needed because the timestep is done separately)
1410      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1411      - GCHEM is now---more or less cleanly---separate from PTRACERS
1412      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1413        so clear to me how that should be done in a general way.
1414    o CFC: improve formatting of output in CFC_ATMOS
1415    o PTRACERS:
1416      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1417        that ALL experiments with ptracers enable can be checked. This makes
1418        GCHEM_MONITOR obsolete.
1419      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1420        monitorFreq
1421      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1422    o add PTRACERS (PTR0[1-5]) to testreport output
1423    o exf_check_range:
1424      * default changed to .TRUE.
1425      * will check values for niter0 if debLevA, every timestep if debLevB
1426      * STOP in exf_check_range if 'out of range'
1427      * range chosen generous to allow for potential extema
1428      TBD: a version with stricter range
1429           permitted range would be runtime parameters
1430  o GMredi:  o GMredi:
1431    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1432    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 1435  o GCHEM:
1435    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
1436      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1437    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
1438      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1439        this flag is now only visible within GCHEM-pkg routines.
1440      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1441        be replaced by a 3D array that is computed before thermodynamics; for
1442        this, the tracer ID iTracer had to be included into the parameter list
1443        of ptracers_forcing
1444      - set up forward_step to call gchem_forcing, that will replace
1445        gchem_forcing_int in ptracers_forcing
1446      - cleaning up
1447  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
1448    
1449  checkpoint56  checkpoint56

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