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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.847 by heimbach, Thu Jun 28 00:35:07 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      adjoint: store directives updated, but gradient checks deteriorated,
11      so maybe GM/Redi adjoint is now broken.
12    o seaice adjoint
13      * add AREA, HEFF, HSNOW as control variable
14        (should not change lab_sea results)
15      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
16    o pkg/seaice: added computation of saltFlux in seaice_growth;
17       For time being, sea ice salinity is assumed constant
18       contribution of snow flooding to freshening of sea ice is neglected.
19       SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
20       defaults to 0.0 in order to maintain backward compatibility.
21       Typical values for SEAICE_salinity are 4 to 10 g/kg.
22    
23    checkpoint59d
24    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
25     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
26     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
27    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
28     and change default value of parameter "GM_Small_Number";
29     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
30       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
31       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
32    o pkg/ecco: cost function when applying pkg/smooth to controls
33    o pkg/ctrl: add forcingPrecond run time parameter
34    o pkg/seaice:
35     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
36     - fix bug in metric terms of u-equation in LSR solver (implicit part),
37       changes verification/lab_sea
38     - rearrange implicit part of u-equation in LSR solver to make it easier to
39       read, understand, and debug. This causes changes at the truncation level.
40     - fix (serious) bug in the boundary conditions (sign error in the implicit
41       part) of the LSR solver. Changes all LSR results.
42     - fixed problem with HSNOW initialization to avoid thick snow when AREA
43       is initilized with small values - does not change lab_sea results.
44     - added HsnowFile initialization capability
45    o pkg/smooth: addition to model/src and pkg/ctrl so allow
46     initialization of pkg/smooth and application to control vector
47    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
48    o dependencies: pkg/profiles requires pkg/cal
49    o pkg/profiles:
50     - added option ALLOW_PROFILES_GENERICGRID
51         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
52         that interpolation information (grid points and coefficients) is provided
53         within the netcdf input files.
54         -> sample matlab scripts can be found in MITgcm_contrib/gael
55         that allow you to prepare netcdf input files.
56     - also modified: cleaner include statements, cleaner error print statements,
57       cleaner stops when error, and more tests of the netcdf input files consistency.
58    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
59    o pkg/seaice:
60     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
61       requires a new routine: seaice_diagnostics_fill.F
62     - make sure that seaice does not move if not forced (pressure replacement
63       method, Hibler and Ip, 1995), changes results
64     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
65     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
66       It is turned off by default (=-1.), because it changes the results.
67     - make it possible to read AREA from a file, too.
68    
69    checkpoint59c
70    o add S/R and diagnostics for oceanic mixed-layer depth
71    o move GMRedi call after all vertical mixing schemes (including KPP)
72    o pkg/thsice:
73     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
74      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
75    o pkg/obcs:
76     - bug fix for balance code
77    o pkg/seaice:
78      - allow values of SEAICE_elasticParm > 1
79      - add new parameter SEAICE_evpTauRelax as an alternative
80        to SEAICE_elasticParm
81      - make lsr boundary conditions free slip (by default), changes result
82      - add code for no slip boundary conditions for lsr
83      - set minimum of zeta to zero (and not 4e8) (changes results)
84      - add a cap on AREA after advecting AREA if seaice_growth is not called
85    o change calculation of Visbeck K:
86      - no longer depend on tapering scheme; instead, compute slope (limited
87        by GM_maxSlope). this is equivalent to what was comuted before with
88        clipping or linear tappering.
89      - fix vertical averaging (wrong by 1/2 level)
90      - leave the old version (but will not be maintained) within
91        #ifdef OLD_VISBECK_CALC / #endif
92      - update output of exp. ideal_2D_oce
93    o change error catch in calc_r_star to improve vectorization
94    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
95      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
96    o adjoint:
97      Re-organized adjoint checkpointing according to Matt Mazloff
98      (but with modifs/completions/cleanups)
99      Storing is now bundled into large arrays to optimized I/O
100      (and second step in cleanup of the_main_loop)
101    
102    checkpoint59b
103    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
104      - export/import (between ocean & coupler) fields needed for ocean DIC.
105    o pkg/seaice:
106      - get rid of three more exchanges seaice_calc_viscosities (required
107        different loop boundaries in seaice_lsr and seaice_ocean_stress)
108      - bug fix in seaice_ocean_stress (update of lab_sea required)
109      - reduce loop boundaries to necessary minimum also in seaice_evp
110      - go back to the old way of computing deltaC/Z as the adjoint likes that
111        better
112    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
113      passive tracer to an Age Tracer) + update output.txt
114    o pkg/exf:
115      - implement A-grid / C-grid selection for wind-stress input files.
116      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
117      for now, in exf_bulk_largeyeager04.F only :
118      - change implementation for case where windspeed + 2. components wind-stress
119        are read-in. AND use rhoConstFresh to convert evap.
120    o pkg/seaice:
121      - use correct EXCH_UV for wind-forcing (on A-grid).
122      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
123        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
124    o pkg/exf:
125      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
126      EXF_INTERPOLATION:
127      - merge global_with_exf/code version of exf_interp_read.F
128        to the main code ;
129      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
130        reading the file ; Important: This options needs to be defined to recover
131        previous code.
132        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
133      - no longer loose real*8 precision along the way when using exf_iprec=64.
134    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
135      - change discretisation of evp-solver in order to avoid another exchange
136        (changes lab_sea) and clean up a little
137      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
138        help the adjoint (this also changes the results slightly)
139      - add a few "_d 0" where they had been missing in seaice_evp.F
140      - cleaning up: remove unused seaice_calc_rhs.F
141    o pkg/exf: some cleaning-up:
142      - change various "constants" into runtime parameters
143      - cleaned-up Large&Yeager04 routine which should eventually
144        replace exf_bulkformulae.F (changed names of S/R and CPP)
145        and merged various ALLOW_ATM_WIND options
146     only used with thsice pkg (in thsice_get_exf.F):
147      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
148        which are used when useStabilityFct_overIce=TRUE (= the default)
149      - change default values of ice & snow emissivity and scale downward LW
150        by ice & snow emissivity.
151    o pkg/thsice:
152     fix few little problems, in thsice_calc_thickn.F:
153      - growth vertically (and not laterally) if iceFrac == iceMaskMax
154      - melt only laterally if hIce < hThinIce (as the comments say)
155      and in thsice_extend.F:
156      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
157      - start to form ice as soon as the minimum ice-volume is reachable.
158     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
159      and cpl_aim+ocn
160    o pkg/kpp
161     - move computation of surface related input fields to KPP into a new
162       subroutine kpp_forcing_surf.F
163     - remove wrong (within bi,bj loops) EXCH calls.
164     - little cleaning (add argument myThid in last position, cvs header ...)
165     - for now, fix conservation problem by exchanging KPPviscAz (may not
166       be the best fix)
167    o pkg/seaice
168     - check for inconsistent evp parameter/cpp-flag combination
169     - remove leftover errIO flat for obsolete name list error handling
170    o OpenAD
171     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
172    
173    checkpoint59a
174    o pkg/seaice: some parameter clarifications and a little bit of clean up
175    o pkg/thsice: rename run-time parameters:
176       himin       -> hIceMin
177       himin0      -> hThinIce
178       hihig       -> hThickIce
179       i0          -> i0swFrac
180       transCoef   -> bMeltCoef
181       frac_energy -> fracMelting
182      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
183       with default values (for now) that do not change the results.
184      remove old version of thsice vars advection in pkg/seaice.
185    o in FFIELDS.h:
186      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
187      - make pLoad & sIceLoad always available (but still only used if
188         ATMOSPHERIC_LOADING is #define).
189    o pkg/kpp: replaced _KPP_RL with _RL
190    o bug fixes for vertical diffusivity computations when both KPP and
191        3D diffusivity arrays are used.
192    o pkg/seaice: fix bug in evp solver, while doing that
193      - change (improve?) discretization of stress computations for both
194        cgrid-lsr and evp solver
195      - add a new routine to compute strain rates
196      - the above changes lab_sea results
197      - add no slip conditions for evp solver (off by default), lsr-version
198        may follow
199      - fix exchange for shear at Z-points (does not change lab_sea)
200      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
201        (to force the user to pick a time step since there is not "safe" way
202        of choosing it)
203      - add principal stress diagnostics
204      - rearrange fields for evp a little to avoid having to call a: too many
205        exchanges and b: exchanges for stress trensor components which we do
206        not have.
207      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
208        of evp, complete rewrite for lsr case (latter is does not yet work
209        in all cases)
210    o pkg/kpp: add code to have mixing in shelf ice caverns
211      - add myThid to all kpp routines (long overdue)
212    
213    checkpoint59
214    o pkg/exf:
215      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
216        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
217      - move exf header files from lower_case.h to UPPER_CASE.h ;
218        add missing cvs Header & Name
219      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
220      - add namelist param. selectStressGridPosition, exf_monFreq
221      - retire many _CLIM routines, and remove data.exf_clim
222        + params moved to data.exf
223        + climsst, climsss now handled by exf_set_gen, i.e.
224          climss?period=0 refers to constant field,
225          climss?period=-12 to monthly forcing
226      - split up namelists in data.exf
227    o pkg/seaice:
228      - remove seaice_exch and seaice_exch_uv
229      - remove superfluous exchange of theta
230      - add myThid to seaice_budget_ocean/ice
231      - add new interface for atmospheric wind forcing (C-grid only)
232        + new routine
233        + two new field (taux, tauy for stress over ice)
234        + removed one global field (DAIRN) for C-grid case only
235    o pkg/thsise
236      - 2nd set of modifs for thsice adjoint in conjunction with exf
237    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
238    
239    checkpoint58y_post
240    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
241      vertical diffusivity, similar to that in MOM4; turned on using
242      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
243      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
244    o Added capability for 3D specification of background vertical diffusion
245      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
246      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
247      "data" file that contains the 3D vertical diffusivity coefficients.
248    o ice dynamics (pkg/seaice) with thsice thermodynamics:
249      - add code within pkg thsice to advect & diffuse sea-ice fields
250      similar to (and will replace) what has been added in  seaice_advdiff.F,
251      but: - conserving Mass, Heat & Salt.
252           - better when using non-linear advection scheme (not yet fully tested)
253           - can also be used in atmospheric set-up (for now, only the diffusion).
254    
255    checkpoint58x_post
256    o IO option for global-file compact format:
257      - add options when generating topology (utils/exch2/matlab-topology-generator)
258      - add I/O capability (pkg/mdsio).
259      - adapt utils/matlab/rdmds.m to read this format.
260      for now long-line format not yet supported by pkg/mdsio (& exch2).
261    o shelfice: add a few diagnostics
262    
263    checkpoint58w_post
264    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
265      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
266      (and replace horiVertRatio in NH code).
267      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
268                         and tutorial_plume_on_slope (sensitive to truncation)
269    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
270      directly to drive seaice model (C-grid only)
271    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
272     - reintroduce computation of wind from stress,
273     - compute tau (in exf_bulkformulae.F) from windstress averaged to
274       mass points to avoid tau = 0
275     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
276    o rdmnc.m: make it work with "global" files created with gluemnc
277    o rdmnc.m : some improvements in dealing with singleton dimension
278      (tested on all testreport mnc output files).
279    o genmake2: disable pkg/profiles if netcdf test fails.
280    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
281    o move call to cal_readparms up to make calendar parameters/variable available
282      to all packages
283    
284    checkpoint58v_post
285    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
286      useDynP_inEos_Zc tested.
287    o pkg/exf: changes to properly interpolate/mask/scale initial fields
288    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
289      and portions thereof.  See read_cs.txt for description and examples.
290    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
291      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
292      following the great-circle arc between those 2 points.
293    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
294      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
295    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
296     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
297     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
298     - still needs work (not working with some options ; efficiency to improve)
299       and serious testing.
300     - use this scheme for temperature & salinity in 2 advection test exp.:
301       advect_xy & advect_xz, respectively.
302    
303    checkpoint58u_post
304    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
305    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
306    o testreport: add option "-skipdir" to skip some test.
307    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
308      momentum calculation.
309    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
310    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
311      remove checkpoint.F and the_correction_step.F (no longer used);
312      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
313    o add option (linFSConserveTr) to correct for tracer source/sink due to
314      Linear Free surface
315    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
316    o pkg/thsice: fix reading mnc-pickups
317    
318    checkpoint58t_post
319    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
320    o pkg/mdsio:
321     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
322       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
323       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
324     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
325     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
326       either MDS_READ_FIELD or MDS_WRITE_FIELD )
327     - new S/R (to replace MDSWRITEMETA), which allows to write more
328       informations (variable names, time ...) to meta files.
329     - modify rdmds.m to give back the meta file content.
330    o pkg/diagnostics: change vertical interpolation to be safer, and more
331       flexible (define p-levels to interpolate to in data.diagnostics);
332      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
333       diagnostic pointer.
334    o pkg/seaice: more cleaning up of seaice_growth, added many comments
335    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
336    o fix multi-category seaice:
337     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
338       SEAICE_MULTICATEGORY
339     - fix short wave heat flux
340    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
341       and allow to use EVP solver. Change forward lab_sea: test both EVP
342       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
343    o Initial check-in of lab_sea adjoint
344      (very similar to natl_box_adjoint/code_seaice)
345      * used C-grid and EVP solver
346      * used KPP, GM/Redi
347      * uses inAdExact=.TRUE.
348      * gradient checks fail for both ADM and TLM
349        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
350        f.d. gradients actually seem more problematic than ADM, TLM gradients;
351        issue is related to forward mismatch between g77 an ifort
352    o pkg/seaice: overhaul of thermodynamics
353     - growth.F and groatb.F are replaced by new routine seaice_growth.F
354     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
355     - move a few global fields out of SEAICE.h into seaice_growth.F and
356       make them 2D (FICE/QNETO/ ...)
357     - remove FO (it is the same as QNETO)
358     - introduce a few local fields to avoid modifying external fields such
359       as atemp, etc.
360    
361    checkpoint58s_post
362    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
363      changed exf_set_gen.F so that
364        genperiod=0 means input file is one time-constant field and
365        genperiod=-12 means input file contains 12 monthly means
366    o CG2D: use pre-computed solver main-diagonal (stored in common block);
367      this affects truncation error ; generate new output file for exp. which
368      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
369        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
370        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
371        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
372        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
373        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
374    o start implementation of deep-atmosphere and anelastic formulation
375    o verification: remove 2nd copy of input files and use script "prepare_run"
376      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
377    o mom_common/vecinv/fluxform: fix a few initialisation isssues
378    o profiles: fix for multithreaded case
379    
380    o diagnostics: rename few diags:
381      s/'PRESSURE'/'RCENTER '/g
382      s/'TICE    '/'oceFreez'/g
383      s/'TAUX    '/'oceTAUX '/g
384      s/'TAUY    '/'oceTAUY '/g
385      s/'SWFLUX  '/'oceQsw  '/g
386      s/DIFx/DFxE/g
387      s/DIFy/DFyE/g
388      and add few ocean-forcing diagnostics:
389      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
390    o modifications to pkg/seaice/growth.F and budget.F, which change results of
391      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
392      as actual snow thickness.  It now refers everywhere to effective snow
393      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
394    
395    checkpoint58r_post
396    o modifications to pkg/seaice/growth.F, which change results of
397      lab_sea experiment: fixes pertain to melting snow over open water, to
398      masking EVAP under sea ice, and to using the correct AREA variable for
399      computations of EVAP, PRECIP, HSNOW, and GHEFF
400    o add ability to read bathy, salt, and theta using MNC (off by def)
401    o add flooding algorithm and advection of HSNOW for pkg/seaice;
402      both are turned off by default and do no change any results
403    o seaice advection with pkg/thsice: a step toward the use of non-linear
404      advection scheme, but #ifdef or commented out for now (requires more EXCH).
405    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
406      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
407      in natl_box (affects results @ truncation level: update output.txt)
408    o multi-threading and IO:
409      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
410      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
411        (needed to work with SingleCpuIO): tested in all verif. exp.
412    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
413      affects the results (but none of the verification test uses this scheme).
414    o Adding some pkg/diagnostics capability to pkg/seaice
415      (will certainly be subject to changes)
416    o ctrl: adding new control variables:
417      lwflux, lwdown, evap, snowprecip, apressure, runoff
418    
419    checkpoint58q_post
420    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
421      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
422      high_res_cube configuration by 4% on Columbia.
423    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
424      add (in global_with_exf/code) a version of EXF_INTERP_READ without
425      dynamical allocation (seems to work in multi-threaded).
426    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
427      single CPU io) so that TAF does not have to see EESUPPORT.h
428    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
429    
430    checkpoint58p_post
431    o obcs: stop if obcs is used with useCDscheme = .true.
432    o shelfice:
433     - fix a sign error so that no slip at shelfice interface works
434     - remove stop for combination non-hydrostatic code and shelfice. That does
435       not mean, that the results are correct, but at least they are numerically
436       stable
437    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
438    o added adjoint exch routined for all exch*3d* routines
439      and updated flow directives
440    
441    checkpoint58o_post
442    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
443      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
444    o change controling S/R for writing pickup file (new S/R do_write_pickup)
445      and clean-up reading/writing of pickup files.
446    o fix local version of read/write pickup (NH part) in rotating_tank/code
447    o simplify EXCH interface:
448     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
449     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
450    o added the regrid package
451    o shelfice:
452     - add a simple boundary layer scheme to reduce noise
453     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
454    
455    checkpoint58n_post
456    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
457       local variable (not in common block).
458    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
459      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
460      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
461        to work with SingleCpuIO.
462    o add "_d 0" to real constant of pkg/cfc subroutines ;
463       update exp. cfc_exemple & tutorial_cfc_offline output files.
464    o multi-threading and IO:
465      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
466        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
467      - barrier before and after reading.
468      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
469      - avoid using MDS_WRITELOCAL for LAND pkg output.
470      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
471        common-block variables ; Allows multi-threading with master-thread IO.
472    o change default MAX_NO_THREADS from 32 to 4 ;
473      and stop cleanly when MAX_NO_THREADS is too small.
474    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
475    
476    checkpoint58m_post
477    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
478       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
479    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
480       keep global_ocean.90x40x15 (for AD testing) with former secondary test
481       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
482    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
483        add MITgcm_tutorials (= code + all the tutorials)
484    o ecco, option to compute cost for total ssh (mean+anom)
485    o consistent with addition of ptracer and ssh in pkg/profiles
486    o profiles: adding ptracer and ssh
487    o testreport: change multi-test output-file name
488      (from output.txt.{name} to output.{name}.txt)
489    o profiles: now ok for mutli-tiles case
490    o seaice: add 4 parameters for different advection schemes for area,
491      (effective) seaice thickness, enthalphy, and snow height. Their default
492      is the standard parameter SEAICEadvScheme
493    o calc_gw:
494     - add cosFacU in zonal viscous flux (harmonic.visc.).
495     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
496       of tutorial_plume_on_slope.
497    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
498    o calc_gw: true flux-form, account for horizontal grid spacing.
499      update rotating_tank results, but not plume_on_slope (affected at
500      truncation level, 11 digits).
501    
502    checkpoint58l_post
503    o calc_gw:
504     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
505     - remove side-drag for now (need to fix it); update plume_on_slope results.
506     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
507    o commit code to make SST/SSS weights spatially variable
508      (based on either variable in-situ or variable initial T/S weights)
509    o pkg/ecco:
510      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
511        now based on horizontally varying weights wthetaLev, wsaltLev
512      * cost_averagesflags now returns year indices in addition to day, month
513      * sflux balance is performed on annual basis
514        (sflxumm, sfluxmm2, bal_sfluxmm)
515      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
516        including separate counting and multipliers
517    o pkg/rbcs
518      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
519    
520    checkpoint58k_post
521    o testreport:
522     - always build in dir. "build" (if not there, mkdir build instead of building
523       & running in input)
524     - run in dir run (if it exists), in build otherwise.
525     - call prepare_run (if input/prepare_run exists)
526     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
527    o pkg/exf modifications to interpolation and rotation routines for more
528       reasonable treatment of North Pole singularity: for tracers North Pole
529       value is set to northernmost zonal-mean value, for zonal velocity it is
530       set to zero, and for meridional velocity it is set to northernmost value.
531    o pkg/exf/exf_check_range.F
532     - add tile index to diagnostics and move stop statement to the very
533       end of the routine.
534    o pkg/diagnostics: (diagnostics_main_init.F)
535      define title of isomorphic variables according to the current config.
536    o pkg/thsice with pkg/seaice dynamics:
537    - fix domain of computation (interior only, required for exf) and do exchanges
538    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
539    o towards a standard way of dealing with multi-threading in MONITOR
540      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
541    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
542       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
543    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
544    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
545    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
546       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
547    o tracer advection:
548     - clean-up and simplify calc_common_factors.F
549     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
550       advection subroutine (but still not used within DST advection S/R)
551    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
552    
553    checkpoint58j_post
554    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
555      from file (collects calls previously in FORWARD_STEP)
556    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
557    o adjoint store dir. adjusted accordingly
558    o genmake2
559      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
560    
561    checkpoint58i_post
562    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
563      on wind stress (SEAICEstressFactor defaults to 1.)
564    o Total number of Timers is finite (<=40): comment out 2 non-essential one
565      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
566    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
567      on CS-grid: no longer loosing mass.
568    o exf & curvilinear-grid: no longer modify longitude xC & xG.
569    o pkg/ggl90: fix sloppy output and fix a bug
570    o pkg/seaice: added SEAICEuseEVPpickup parameter
571      - Set to false in order to start EVP solver with
572        non-EVP pickup files when using SEAICEuseEVP
573      - fix sign error in diffusion in seaice_calc_rhs
574    
575    checkpoint58h_post
576    * Modifications for bottom topography control
577      o replace hFacC by _hFacC at various places
578      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
579      o add non-self-adjoint cg2d_nsa
580      o update autodiff support routines
581      o re-initialise hfac after ctrl_depth_ini
582      o works for 5x5 box, doesnt work for global_ocean.90x40x15
583    * Adding verification for 5x5 box (4-layer) bottom topography control
584    
585    checkpoint58g_post
586    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
587       used for mean seasonal cycle, mean diurnal cycle); add an example
588       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
589    o pkg/ggl90:
590      - add parameter (minimum surface kinetic energy)
591      - fix bug (avoiding division by zero)
592    o couple pkg/thsice to pkg/seaice:
593      - modify advection in seaice to accomodate new scalar fields to be advected
594      - only muliDimAdection scheme work with seaice/thsice
595      - mapping of thsice-variables to seaice-variables, back and forth
596      - does not break the verification experiments, but does not give the
597        desired results either
598    o pkg/seaice
599      - make (default) second order advection a bit less confusing?
600    
601    checkpoint58f_post
602    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
603      to pkg/seaice):
604      - new routines thsice_map_exf and thsice_get_exf provide the interface
605      - add an additional formal parameter to thsice_solve4temp
606    o pkg/exf:
607      - add new fields wspeed, snowprecip (to be able to couple to thsice)
608      - correct Stefan-Boltzmann constant
609      - new parameter for longwave surface emittance
610      - separate some stuff from exf_bulkformulae into new routines  
611        exf_radiation, exf_wind
612      - add new parameters and constants: longwave emissivity for ocean, ice
613        and snow, evaporation parameters over ice
614      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
615        either wind from stress or stress from wind
616    o pkg/thSIce:
617    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
618    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
619       and THSICE_CALC_THICKN
620    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
621    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
622      to make debugging easier.
623    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
624    o pkg/bulk_force:
625      - clean-up comments and parameters ;
626      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
627    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
628      generate new output for test-experiment: aim.5l_cs.thSI
629    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
630      testreport accordingly
631    
632    checkpoint58e_post
633    o SEAICE_CGRID adjoint done
634    o R_STAR adjoint implemented.
635      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
636      * need to sort out init. of h0facc, etc.
637    o Make pkg/profile fully independent of ecco,cost, etc. stuff
638      to be able to use it in pure forward.
639    
640    checkpoint58d_post
641    o upgrade simple test-experiment to tutorial example:
642     step.1: duplicate the experiment and (step.2) will remove the old copy.
643      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
644      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
645      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
646      tutorial_global_oce_biogeo    <- copy of dic_example
647      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
648      tutorial_plume_on_slope       <- copy of plume_on_slope
649      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
650      tutorial_global_oce_optim     <- empty for now (David ?)
651      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
652     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
653    o correct a sign problem in cost_scat.F
654    o obcs and ptracers: fix boundary conditions for advections schemes
655      with larger stencil
656    o thsice adjoint: start
657    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
658      completeness
659    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
660      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
661    o ptracers adjoint:
662      * avoid extensive recomputatations
663      * fix missing re-init. of gptr (missed by TAF)
664    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
665      me to turn off the excessive output to STDOUT that this package produces
666    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
667      and add those terms in Vector-Invariant formulation.
668    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
669      if the control period (xx_hfluxperiod etc) is 0
670    o in profiles pkg, clean routines and fix details
671    o in ecco pkg, reading ssh data:
672      fix problem in case the model does not start at iter0=0
673    o fix mnc-pickup/restart for ptracers
674    o new package prifiles:
675      code to compute profile-based cost by Gael Forget
676      (modifs in ecco, ctrl, autodiff)
677    o Benign bug fix in initialization (spotted by M. Mazloff) of
678      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
679    
680    checkpoint58c_post
681    o adjoint: finish NLFS adjoint and provide reference output in
682      verification/global_ocean.90x40x15/results_ad_nlfs
683    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
684      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
685      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
686      with SEAICE_CGRID defined.
687    o move calendarDumps from "data" to "data.cal" and clean-up the code
688      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
689    o add useEXF & useCAL flags (for now, set in hard-coded way)
690    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
691      (were missing in NH mode, and wrong in quasihydrostatic mode).
692      waiting for Chris updated version of calc_gw to add those CALLs.
693    o fix bug in quasihydrostatic S/R ;
694      add a test for this option: global_ocean.90x40x15.qshyd
695    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
696      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
697    o add on/off flag useOffLine for package OFFLINE
698    o seaice:
699      - modify advection so that it works also on the C-grid
700      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
701        problem in multi-tile runs with C-grid
702      - add flags for clipping ice velocities and/or masking solver forcing
703      - fix drag (ocean on ice) formulation and a bug that caused noise in the
704        C-grid solver
705      - added a few comments to seaice_diffusion.F
706      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
707        are now exclusive)
708      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
709        required re-ordering the code a little:
710       + make DAIRN global variable (defined in SEAICE)
711       + move computation of the viscosities eta and zeta into a new separate
712         routine (because I need to recompute them in seaice_ocean_stress.F)
713    
714    checkpoint58b_post
715    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
716      update output.txt of exp. aim.5l_cs.thSI
717    o various mnc cleanups and improvements:
718      + shrink lookup tables by factor of ~4
719      + better error reporting when running out of lookup space
720      + able to handle longer path/file names (up to 500 chars)
721    o adjoint:
722      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
723      - TBD: "hidden" mom_vecinv recomp. in dynamics
724    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
725     (allow to differentiate between forcing components using new integer flags:
726      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
727     and add new flag to put Dissipation tendency out of Adams-Bashforth.
728    o ecco
729      - enable trend removal from SSH anomaly obs.
730    o adjoint
731      - a fix for PmEpR when #undef EXACT_CONSERV
732      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
733      - try to fix "hidden" recomp. in forward_step for NLFS
734        (NLFS seems broken sometimes after I checked it in)
735    o seaice:
736     - add c-grid version of the dynamic solver:
737       + three new routines that are the c-grid substitute lsr, dynsolver
738         and ostres
739       + put a few fields that were local to dynsolver into global common
740         blocks, so that I can move the computation of stresses etc into
741         seaice_lsr (saves coding but may break the adjoint).
742     - replace more hardwired parameters by runtime parameters
743     - add ice masks that mask the rhs of the implicit solvers where there
744       is no ice (commented out in seaice_dynsolver, because i am not sure
745       if this works properly), eventually this should replace the clipping
746       of ice velocities in seaice_dynsolver to +/-40cm/s.
747    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
748      include it only where its needed
749    o move balancing of fluxes before the call of external_forcing_surf
750    o seaice:
751      - correct units of turning angles (now they are really in degrees)
752      - move computation of GWATX/Y out of main routine into dynsolver
753      - initialize GWATX/Y in seaice_init
754    o Apply mask on Fresh-Water flux (needed for SSH forcing).
755      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
756    o seaice: add runtime flags for turning angles (default to zero)
757    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
758      and trend from exf forcing and ctrl control adjustments
759    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
760      (since checkpoint57x_post)
761    o change the default rotation period to 86164.s = the Earth rotation
762    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
763      and based on a reference stratification. Tested within hs94.cs-32x32x5.
764    o seaice advection: add code for choosing between the default (2nd order
765      central differences) and multiDim advection schemes provided by
766      pkg/generic_advdiff
767    o seaice:
768      - removed all references to SEAICE_GRID.h fields from
769        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
770        (cubed-sphere configuration will change a little)
771      - grid computations in seaice_init are obsolete now.
772      - cleaned up code a little so that is easier to read (hopefully).
773      - added new (better?) discretizations of default advection and diffusion
774        (turn on with SEAICEuseFluxForm)
775      - replace 1 in 3d global fields by kSurface in growth.F
776      
777    checkpoint58a_post
778    o seaice:
779      - bug fix in advect.F
780    o shelfice:
781      - separate shelfice load anomaly from pload (breaks with time
782        dependent forcing), => introduce constant field shelficeLoadAnomaly.
783        Its default is 0., but it may be computed more cleverly from (unknown)
784        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
785        done offline. A good approximation of the pressure load anomaly is
786        necessary to avoid large initial adjustment processes underneath
787        deep-reaching shelfice.
788      - small fix in ISOMIP shelfice_thermodynamics
789      - add more sophisticated thermodynamics of Hellmer (1989), this is
790        now the default
791      - give a few constants more intuitive names
792    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
793      if bulk formulae are used in long integration (especially EmPmR). Turn
794      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
795      if balancePrintMean, the imbalance that is substracted is printed to
796      STDOUT.
797    o fix bug (typo) in obcs_apply_eta.F
798    o add a new package shelfice which enables us to model the circulation
799      underneath shelf-ice with draughts of hundreds of meters.
800     - works
801     - to do: + include improved thermodynamics
802              + check whether kSurfC (from model/inc/SURFACE.h) can be used
803                instead of new field kTopC
804              + can we use topoFile, Ro_surf and existing code in ini_depth.F
805                instead of new field R_shelfIce and new code in ini_depth.F
806                and ini_mask_etc.F?
807              + adjust vertical mixing schemes?
808    o seaice pkg:
809     - add a cpp-flag to include a simple formula for a salinity dependent
810       freezing point of sea water at the surface
811     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
812       meridional stresses are now different (and hopefully correct)
813    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
814       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
815       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
816    o pkg/diagnostics: add options and parameters for regional-statistics
817       diagnostics ; define regions by reading a region-mask from a file
818       (might add other options later)
819    o pkg/bulk_force:
820     - add option and parameters to use AIM surface-flux formulae.
821     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
822       others forcing fields (defined in PARM05, parameter file "data") are loaded
823       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
824     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
825     - use the right EXCH call for uwind,vwind (to work on CS-grid).
826     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
827       and parameters (note: calcWindStress replaces .NOT.readwindstress).
828     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
829    
830    checkpoint58
831    o add "--embed-source" option to genmake2 which, when the supporting
832      tools can be compiled (as determined by genmake2) will turn on the
833      embed_files package which then embeds the entire MITgcm source code
834      (*.[fFhc] + Makefile) used for the build within the executable
835      - requested by CNH but off by default
836      - adds a paltry <9MB to the mitgcmuv executable in most cases
837      - only writes the output when useEMBEDSRC in eedata is true
838    o clean up 3-dim. relaxation codes:
839      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
840      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
841      * Thanks to Tom Haine for testing!
842    
843    checkpoint57z_post
844    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
845      affects output (@ truncation level) of exp. plume_on_slope ; updated.
846    o fix the pickup behavior for obcs in combination with ptracers
847    o fix a bug in ptracers_external_fields_load
848    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
849      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
850    o transfered surface NH pressure to eta field (if exactConserv).
851    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
852         and update lab_sea output.txt file.
853    o completing 3-dim. relaxation code: additional term
854         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
855      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
856      * At compile time, in "EXF_OPTIONS.h" set
857          #define  ALLOW_CLIMTEMP_RELAXATION
858          #define  ALLOW_CLIMSALT_RELAXATION
859      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
860          tauThetaClimRelax3Dim = 15552000.0,
861          tauSaltClimRelax3Dim  = 15552000.0,
862      * 3 cases:
863          1) Use a constant-in-time 3-dim. field
864          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
865          3) Real-time relax. to time-evolving prescribed field
866    o Adding Laplacian-type smoothness constraint on
867      initial and boundary (forcing) controls (ic, bc)
868      * enable at compile-time via
869        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
870      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
871      * Absolute scale somewhat unclear so far
872      * no area weighting was included since no other cost term does so far
873    
874    checkpoint57y_post
875    First step for a NLFS adjoint
876    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
877    o new init. routines for calc_r_star, calc_surf_dr
878    o still need to deal with ini_masks_etc
879    o testreport seemed happy
880    checkpoint57y_pre
881    
882    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
883    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
884    o add new offset feature to offline pkg (plus minor cleanup)
885    o cfc fixes for final year of integration
886    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
887      be in GCHEM_OPTIONS).
888    
889    checkpoint57x_post
890    o fix testreport Pb in multiple test experiment.
891    o cleanup our namelist syntax in verification:
892      - make it more F95 standards compliant (some work still needed)
893      - allows the vast majority of our tests to work with gfortran
894    o Non-Hydrostatic:
895     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
896     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
897    o Allow to apply AB on T,S rather than on AB(gT,gS):
898     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
899     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
900       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
901     - need a "clever" read_pickup to restart from the other AB formulation
902    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
903    o remove some unused variables (reduces number of compiler warnings)
904    o adjoint
905      * Disable useVariableViscosity for adjoint for time being
906        (there are a number of extensive recomputations)
907      * Initialize certain variables needed for adjoint
908    
909    checkpoint57w_post
910    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
911                 fix the singleCpuIO RS version of MDSWRITEFIELD
912       and add a WARNING if using globalFiles=T with multi-processors.
913    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
914      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
915    o tracer advection scheme:
916      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
917       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
918       was not very convenient).
919      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
920       (further tests needed for the implicit DST & Flux-Limiter schemes).
921    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
922      and sRef for convenience, handy, when you want to initialize
923      ptracers in a large domain with a constant non-zero value. Also,
924      untangle ptracers_init.F a little.
925    
926    checkpoint57v_post
927    o change dome exp. to use variable viscosity in side-drag terms.
928    o remove all the files from the cfc_offline test since they are now
929      incorporated into tutorial_cfc_offline which has been producing
930      identical results for a few days of testing
931    o add new parameter: sideDragFactor to enable half-slip-side BC
932      and change side-drag S/R to use viscosity from mom_calc_visc
933      (can switch back by setting sideDragFactor=0.); affects results at
934      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
935       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
936    o vorticity & strain are now computed without masking, to account for
937      no-slip-side BC in variable viscosity calculation ; mask is applied
938      anyway later on, before computing advection/coriolis terms.
939    o modify exp4 to test new obcs support for reading from external files
940      and for passive tracers
941    o fix behavior of ptracers_monitor when monitor output is written to a
942      netcdf-file; still not independent of monitor.F (writes in the same
943      file).
944    o change default value of tRef (put a uniform, meaningful value for ocean
945      & atmos) and initialize sRef (was missing, as Martin mentioned).
946    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
947      to be proportional to enstrophy dissipation length.  Thus,
948       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
949      This is now consistent with Smagorinsky and with the manual.
950    
951    checkpoint57u_post
952    o OBCS and PTRACERS: add open boundary support for passive tracers
953      - either use homogenous (pseudo) v.Neumann conditions or prescribe
954        OB-values from file; this is not different from the way theta and salinity
955        are treated
956      - however, Orlanski-radiation conditions are not supported, and the model
957        will stop if you use pTracers and Orlanski at the same time.
958      - beefed up the rountine obcs_external_fields_load: now only those open
959        boundary values are overwritten with values from files for which there
960        are really files, otherwise the OB-fields remain untouched. This makes
961        it possible to use different OBs at different ends of the domain (as
962        with EXF)
963    o reduce number of exch calls in shap_filt (s2).
964    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
965      truncation level) 4/5 MLAdjust test results (11&12 digits match).
966    
967    checkpoint57t_post
968    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
969    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
970      same truncation, independent of the face number: affects affects several
971      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
972    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
973      note that biharmonic viscosity + no-slip was not tested in any experiment.
974    o fix bug in non-linear free-surf side-drag ; generate new output for
975      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
976    o make mnc honor the writeBinaryPrec flag for most kinds of output
977    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
978    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
979      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
980    o add brackets in multi-terms sum to get same truncation, independent of
981      the face number (manage to get exactly same value of gU,gV at the cs-edge)
982      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
983    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
984      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
985      a maximum grid-scale Reynolds number.  Also, changes all length calculations
986      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
987      Suggested values of viscosity parameters found in mom_calc_visc.
988      Many new viscosity diagnostics available.
989    
990    checkpoint57s_post
991    o Add clearing-house for viscosity calculations, mom_calc_visc and
992      correct numerous bugs in LeithD and Smagorinsky discretizations.  
993      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
994      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
995      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
996      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
997      The Strain-Tension form is now called with useStrainTensonVisc=.true.
998      ViscAhStrain and viscAhTension are now retired.
999    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1000    o In response to JMC's bug report, genmake2 now ignores any soft-links
1001      that it finds in the *current* directory when searching for files.
1002      Soft-links found in any other source directories will still work as
1003      they did before.
1004    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1005      a C routine to unlimit the stack size
1006    o mnc-ify pkg/aim snapshot vars
1007    o mnc-ify pkg/land as requested by Daniel
1008    o various changes to mnc including:
1009      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1010      - output can now be grouped so that all files within a group
1011          change the ITER portion of their names in lock-step together
1012      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1013          and works with both EXCH1 and EXCH2 (but needs more testing)
1014      - writing works for all verification test cases w/ g77 on Linux
1015    
1016    checkpoint57r_post
1017    o make MNC variable initialization happen earlier
1018    o add diagnostics for (almost) each term of the momentum Eq.
1019    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1020    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1021    o remove MINIMAL_TAVE_OUTPUT option ;
1022      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1023    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1024      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1025    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1026    o add time-dependent SST, SSS control
1027    o cost terms in ecco/ modularized (new cost_generic.F)
1028    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1029    o new infrastructure for seaice model vs. obs misfits in seaice/
1030      * driver from the_main_loop.F is seaice_cost_driver.F
1031      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1032      * gradient check in Exp. 6a of natl_box_adjoint/
1033    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1034      (see README file)
1035    
1036    checkpoint57q_post
1037    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1038    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1039      - bug was reported by Jean-Michel and Ian Fenty
1040    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1041      update exp. cpl_aim+ocn output.
1042    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1043      Needed for high-res. runs with large global files
1044      to be able to limit tapelev size
1045    o Changed some tests for adjoint:
1046      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1047      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1048      * global_ocean.90x40x15/ back to default 3-level checkpointing
1049    o Modifications to enable scripted COMMON to MODULE conversion
1050      * verification/OpenAD/code/ has necessary scripts and description;
1051      * converts, compiles and runs successfully;
1052    
1053    checkpoint57p_post
1054    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1055    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1056      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1057    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1058    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1059      (was already the case for dissipation with mom_vecinv,
1060       and also the case for grad.PhiHyd when staggered-timeStep)
1061      This will allow to put dissipation out-off the AB time-stepping.
1062     Unfortunately, affects truncation error. Update output of exp. that "fails"
1063      (cg2d matching number) and leave the others for later: front_relax(10),
1064      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1065      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1066    
1067    checkpoint57o_post
1068    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1069      (2) its ready to be documented during the 20050801 DocFest
1070    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1071      for ideal_2D_oce and lab_sea on linux_ia32_g77
1072    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1073      in global1x1_tot/code_seaice_adj to access indices 32, 33
1074      (worth another tag)
1075    
1076    checkpoint57n_post
1077    o adding precip control xx_precip 32
1078    o adding swflux control xx_swflux 33
1079    o Replacing 10 forcing penalty cost routines by 1 generic.
1080    o Implementing partitioning in time-mean and variable adjustment
1081      for atmos. state.
1082    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1083    o in natl_box_adjoint:
1084      * updated exp 1 to 10
1085        (but does not have time-mean vs. variable split results yet)
1086    o updated global1x1/*_seaice_adj/
1087      to incorporate latest changes
1088    o enable useSingleCpuIO for mdsio vector routines
1089      (applies in particular to tapelev I/O)
1090    o removed inefficient K-loop in all active_file*control*.F
1091    
1092    checkpoint57m_post
1093    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1094      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1095    o pkg/exch2: filling of face-corner halo regions is optional
1096      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1097    
1098    checkpoint57l_post
1099     tag before updating tutorials (pre-release-2)
1100    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1101       for output and interpolation of input fields onto model grid)
1102    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1103       Affects results of exp. rotating_tank ; update output.txt.
1104    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1105          and taking the square quantity and/or using a fraction-weight field.
1106    o fix aim_diagnostics_init.F mate numbers.
1107    o add mnc output capability to diagnostics/diagstat and update
1108      our cvsignore files for the ACSII output generated
1109    
1110    checkpoint57k_post
1111    o lab_sea now uses diagnostics package and provides a suite of
1112      new EXF diagnostics output.
1113    
1114    checkpoint57j_post
1115    o exf
1116      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1117        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1118        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1119      * extended diagnostics output
1120        - now includes all EXF variables
1121        - hs, hl moved to common block
1122        - separate S/R for diagnostics, called after ctrl vector is added
1123        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1124        - EXFqnet contains true Qnet (i.e. includes qsw)
1125      * updated verif. lab_sea, global_with_exf
1126      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1127        to ensure that diagnostics sees a true EXFqnet
1128    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1129    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1130      several times with different frequencies.
1131    o mnc-ify the thsice package as requested by Daniel Enderton
1132      - the monitor--MNC output needs work
1133      - many attributes need to be added (most are currently blank)
1134    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1135      - many attributes need to be added (most are currently blank)
1136    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1137    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1138    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1139      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1140         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1141    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1142     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1143    
1144    checkpoint57i_post
1145    o Diagnostics package was changed: diagnostic allocation is now deactivated
1146      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1147    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1148      add 1rst Order upwind vertical Shear.
1149    o add a quick fix for A/B checkpointing in OFFLINE mode
1150    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1151      end-run around the C/Fortran linking horror in eesup/src/timers.F
1152    o added pkg/runclock: allows user to terminate run based on wall clock
1153    o added non-hydrostatic scaling parameter: nh_am2
1154    o pkg/my82: futile attempt to make results compiler-independent by adding
1155      some "_d 0", etc. no effect.
1156    o for mnc output, fill the 'T' coordinate var with myTime and create a
1157      separate 'iter' variable for iteration count
1158    o pkg/diagnostics:
1159      add new capability: output of Global/Regional & per-level statistics ;
1160      tested against monitor output (including land & thSIce) on various exp.
1161    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1162    
1163    checkpoint57h_done
1164      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1165      data.diagnostics, data.gchem, data.ptracers) is done.
1166    
1167    o pkg/diagnostics: prepare for Global/Regional statistics.
1168      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1169    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1170      and rename it: DIFFERENT_MULTIPLE
1171    
1172    checkpoint57h_post
1173    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1174    o pkg/diagnostics: change output frequency, now in seconds (instead
1175      of Nb of iterations). This requires to change data.diagnostics.
1176    checkpoint57h_pre
1177    
1178    o in mnc, let the user create the output dir if both mnc_outdir_date
1179      and mnc_outdir_num are false
1180    o add fflags() to pkg/diagnostics which allows one to specify, on a
1181      per-file basis, the file precision [default behavior is unchanged]
1182    o added diagnostics to pkg/kpp, including computation of mixed layer
1183      depth based on a temperature/density criterion
1184    o updated verification/natl_box to test the new pkg/kpp diagnostics
1185    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1186    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1187    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1188      not mnc -- this mistake was found by JMC and is now corrected
1189    
1190    checkpoint57g_post
1191    o add Adams-Bashforth 3rd Order time stepping:
1192      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1193      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1194    checkpoint57g_pre
1195    
1196    o make lambda[Theta,Salt]ClimRelax spatially varying
1197      (default remains spatially uniform constant based on tau)
1198    o added new control variables
1199      * init. uVel, vVel, etanN
1200      * lambda[Theta,Salt]ClimRelax
1201    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1202      (suggested by G. Forget)
1203    
1204    checkpoint57f_post
1205    o add parameter "baseTime" = model base time = time at iteration zero
1206      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1207      account for baseTime shift
1208    o move Coriolis arrays from PARAMS.h to GRID.h
1209    checkpoint57f_pre
1210    
1211    o mnc-ifying the seaice package
1212    o introduced an alternative length scale calculation for use in the limiting
1213      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1214    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1215    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1216      as well as grad(vort3).  Made it compatible with both approximate form
1217      for the cubed sphere and full form of these gradients.  Added flag
1218      useFullLeith to select between approximate and full form.  
1219    o add "d0" in getcon.F to reduce differences between compilers/platforms
1220      update output.txt of exp. fizhi-gridalt-hs
1221    o change port_rand funtion to allow to set the seed.
1222    o fix obscure MNC bug involving conversion between reals and integers
1223      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1224        new version is now more standards-compliant
1225    o adjoint-related modifications
1226      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1227      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1228      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1229    
1230    checkpoint57e_post
1231    o Adding eddy stress controls a la Ferreira et al.
1232    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1233    
1234    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1235      update output.txt of exp. fizhi-gridalt-hs
1236    o add more "Z" dimensions and associated coordinate vars to MNC
1237    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1238    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1239      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1240      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1241      months and years.  Requires pkg/cal.
1242    o diagnostics: add pickup functionality
1243      - off by default for backwards compatibility
1244      - current version only uses MDSIO -- MNC will be added
1245    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1246    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1247    
1248    checkpoint57d_post
1249    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1250    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1251      output from the diagnostics package
1252    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1253    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1254      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1255    o add coordinate variables to the MNC output from the diagnostics package
1256    o change MNC-flags default value: true when useMNC=TRUE
1257    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1258      the ability (off by default) to read the grid information using MNC
1259    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1260    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1261    o do snap-shot diagnostics at the middle of the time-interval (instead of
1262      at the end).
1263    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1264      new test for AIM with thSIce + slab-ocean
1265    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1266    o move state variable diagnostics to the beginning of the time step ;
1267      (note: still needs some work specially for snap-shot diagnostics)
1268      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1269    
1270    checkpoint57c_post
1271    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1272    o generate new output.txt files on faulks with g77 & the new -ieee option
1273    checkpoint57c_pre
1274    
1275    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1276      update output.txt of exp. global_ocean.90x40x15
1277    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1278      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1279    o add saltFlux(+File) forcing capability with periodicExternalForcing
1280    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1281    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1282    o improvements for the MNC output from DIAGNOSTICS:
1283      - correct handling of the unlimitied dimension
1284      - all dims now have associated coordinate variables
1285      - variables located at U, V, and Corner ("Z") points are now written
1286        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1287        *all* data points are output
1288    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1289    o added pkg/seaice/seaice_monitor.F
1290    o mdsio_readfield.F can now read files visible only to master MPI process.
1291    o pkg/seaice: some test code for ice-modified ocean stress
1292    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1293      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1294      spurious negative numbers for precipitation and humidity.  Will cause
1295      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1296    o pkg/ctrl/
1297      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1298        May be enabled via doPackDiag
1299      *  introduce z-scaling of
1300         + gradient (doZscalePack) and
1301         + control (doZscaleUnpack)
1302    o pkg/mdsio/
1303      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1304      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1305    
1306    checkpoint57b_post
1307    o simplify options in diagnostics_fill arguments (remove weird combinations)
1308    o fix MNC coordinate variables so that they now contain per-face index
1309      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1310      general, EXCH2 grids are only aligned to a "local" coordinate system
1311    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1312    o Implement instantaneous output within pkg diagnostics:
1313      setting a negative frequency in data.diagnostics produces
1314     "snap-shot" output (as opposed to time-average if freq > 0)
1315    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1316      NOTE: change ptracer diagnostics name: use 2 characters to work with
1317            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1318    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1319      becomes the coordinate variable for the 'T' dimension
1320    o add CF-style coordinate variables to MNC
1321      - just a first cut:  numbers are meaningless on the cubesphere and
1322        missing along the T axis but otherwise it works!
1323    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1324    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1325    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1326      this is based directly on what the model compute, so that the content of
1327      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1328    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1329    o clean up build options files for SunOS, in particular
1330      - remove -traditional from xmakedepend
1331      - change -xarch=v9 to -xarch=native for f77
1332      - restore use of make (not gmake)
1333      - add CC=gcc if using g77
1334    o changes per discussion of AM, JMC, & EH3 today:
1335      - move redundant "grid" variables out of "state" -- in preparation of
1336        creating proper CF-style coordinate variables and in recognition
1337        that any/all grid variables can be easily copied (eg. w/NCO) from
1338        the grid files into any of the other NetCDF files
1339      - *always* output grid variables with MDSIO (this will eventually be
1340        changed)
1341      - output MNC grid file if useMNC is true
1342    o every instance of _END_MASTER() has been found and replaced with
1343      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1344      preprocessors
1345    o re-arrange diagnostics pkg initialisation:
1346     - allow each package to extend the available diagnostics list
1347     - add some checking and fix small problems (multi-threaded, ...)
1348     - new S/R diagnostics_fill (replace fill_diagnostics):
1349       look through the short list of active diag. (instead of the long list)
1350       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1351    
1352    checkpoint57a_post
1353    o this set of changes restores TAMC compatibility
1354      tested for global_ocean.90x40x15 adjoint on trough
1355      (what a pain)
1356    
1357    checkpoint57a_pre
1358    o some modifs in tools/build_options for sunos
1359    o call ctrl_pack for ctrl at end for optimcycle=0
1360    
1361    checkpoint57
1362    o add horizontal bi-harmonic viscosity for vertical velocity
1363      - new parameter viscA4W (defaults to viscA4)
1364      - affects only non-hydrostatic code
1365      - to be done: no-slip lateral boundary conditions
1366    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1367    o implement Implicit Vertical advection for pTracers
1368    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1369      (implemented also for implicit vertical diffusion & advection)
1370    o OBCS: extend application of tracer open boundary conditions
1371      to a strip beyond the boundary of width Olx/Oly
1372    o add call monitor to TAF set of required calls (flow directives)
1373      and include in natl_box_adjoint
1374    o untangle a few ifdefs related to cost, ctrl, autodiff
1375      untangel a few ALLOW_ECCO_OPTIMIZATION
1376    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1377      (theta2, salt2 in ecco_cost_weights)
1378    
1379    checkpoint56c_post
1380    o OBCS as control variables
1381      - update ctrl_ad_diff.list, obcs_ad_diff.list
1382      - remove balance of obcs controls from default
1383      - fix index bug nobcs in ctrl_init
1384      - fix dummy fields filen in ctrl_pack
1385      - add dummy weights for obcs
1386    o lsopt: comment out fort.94 output
1387    o optim:
1388      - remove unnecessary header files
1389      - adjusted namelists
1390      - add xerbla.F to Makefile
1391    o exf:
1392      - multiple modifications of exf_check_range
1393      - unit change in exf_init_runoff from [m/year] to [m/s]
1394    o mdsio:
1395      - i/o-vector change debugLevel from debLevA to debLevB
1396    
1397    checkpoint56b_post
1398    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1399      is called from DO_THE_MODEL_IO
1400      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1401      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1402      - clean up PTRACERS_WRITE_TIMEAVE a little
1403    o add another verification experiment that tests both the cfc-pkg and
1404      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1405      reactive tendencies treated inline with regular timestepping
1406    o testreport previously did a lousy job of comparing small numbers, so
1407      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1408      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1409      testreport.
1410    o ptracers_monitor: bug fix for MPI
1411    
1412    checkpoint56a_post
1413    o GCHEM: finish reorganizating the package
1414      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1415        (introduces another 3D-array for each passive tracer, but only if
1416        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1417        gchemTendency is not needed because the timestep is done separately)
1418      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1419      - GCHEM is now---more or less cleanly---separate from PTRACERS
1420      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1421        so clear to me how that should be done in a general way.
1422    o CFC: improve formatting of output in CFC_ATMOS
1423    o PTRACERS:
1424      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1425        that ALL experiments with ptracers enable can be checked. This makes
1426        GCHEM_MONITOR obsolete.
1427      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1428        monitorFreq
1429      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1430    o add PTRACERS (PTR0[1-5]) to testreport output
1431    o exf_check_range:
1432      * default changed to .TRUE.
1433      * will check values for niter0 if debLevA, every timestep if debLevB
1434      * STOP in exf_check_range if 'out of range'
1435      * range chosen generous to allow for potential extema
1436      TBD: a version with stricter range
1437           permitted range would be runtime parameters
1438  o GMredi:  o GMredi:
1439    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1440    - 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 1443  o GCHEM:
1443    - 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
1444      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1445    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
1446      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1447        this flag is now only visible within GCHEM-pkg routines.
1448      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1449        be replaced by a 3D array that is computed before thermodynamics; for
1450        this, the tracer ID iTracer had to be included into the parameter list
1451        of ptracers_forcing
1452      - set up forward_step to call gchem_forcing, that will replace
1453        gchem_forcing_int in ptracers_forcing
1454      - cleaning up
1455  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
1456    
1457  checkpoint56  checkpoint56

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