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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.860 by gforget, Fri Aug 17 21:39:33 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/ecco, ctrl, autodiff and mom_common:
8  o moved ptracer ctrl index 17 -> 32   internal parameter controls, completements of implementations
9    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
10    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
11       at face corners.
12    o pkg/generic_advdiff:
13     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
14      loop range indices for computing vertical advection tendency
15      and do the calculation in the interior only (no overlap) ;
16      for now, only implemented for SOM advection (to save CPU time).
17     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
18    o exch2 adjoint
19      First set of changes:
20      - add exch2 hand-written adjoint templates
21      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
22        This will require cleanup in pkg/autodiff/*.F
23        (changed routines currently kept separate in verif. code/)
24      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
25        that used to hide exch2 or cubed-sphere specific code
26        (commented via 'cph-exch2')
27    o pkg/seaice
28      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
29    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
30       output of global_ocean.cs32x15.thsice .
31    
32    checkpoint59e
33    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
34      for B-grid vector (not yet tested) and C-grid vector (<- only used
35      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
36    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
37      (#ifdef ALLOW_SALT_PLUME)
38    o gather_2d/scatter_2d: removed halo regions
39    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
40      scheme and the corresponding test case (under front_relax dir). For now,
41      only available with Skew-flux form and not yet tested in realistic set-up.
42      adjoint: store directives updated, but gradient checks deteriorated,
43      so maybe GM/Redi adjoint is now broken.
44    o seaice adjoint
45      * add AREA, HEFF, HSNOW as control variable
46        (should not change lab_sea results)
47      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
48    o pkg/seaice:
49      * added computation of saltFlux in seaice_growth;
50        For time being, sea ice salinity is assumed constant
51        contribution of snow flooding to freshening of sea ice is neglected.
52        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
53        defaults to 0.0 in order to maintain backward compatibility.
54        Typical values for SEAICE_salinity are 4 to 10 g/kg.
55      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
56      * added SEAICE_availHeatFrac, which specifies fraction of surface level
57        heat content used to melt or grow ice
58      * commented out cap of HICE: it helps keep ice thinner
59      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
60      * applied OBCS T/S mask to HEFFM sea ice mask
61    
62    checkpoint59d
63    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
64     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
65     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
66    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
67     and change default value of parameter "GM_Small_Number";
68     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
69       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
70       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
71    o pkg/ecco: cost function when applying pkg/smooth to controls
72    o pkg/ctrl: add forcingPrecond run time parameter
73    o pkg/seaice:
74     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
75     - fix bug in metric terms of u-equation in LSR solver (implicit part),
76       changes verification/lab_sea
77     - rearrange implicit part of u-equation in LSR solver to make it easier to
78       read, understand, and debug. This causes changes at the truncation level.
79     - fix (serious) bug in the boundary conditions (sign error in the implicit
80       part) of the LSR solver. Changes all LSR results.
81     - fixed problem with HSNOW initialization to avoid thick snow when AREA
82       is initilized with small values - does not change lab_sea results.
83     - added HsnowFile initialization capability
84    o pkg/smooth: addition to model/src and pkg/ctrl so allow
85     initialization of pkg/smooth and application to control vector
86    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
87    o dependencies: pkg/profiles requires pkg/cal
88    o pkg/profiles:
89     - added option ALLOW_PROFILES_GENERICGRID
90         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
91         that interpolation information (grid points and coefficients) is provided
92         within the netcdf input files.
93         -> sample matlab scripts can be found in MITgcm_contrib/gael
94         that allow you to prepare netcdf input files.
95     - also modified: cleaner include statements, cleaner error print statements,
96       cleaner stops when error, and more tests of the netcdf input files consistency.
97    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
98    o pkg/seaice:
99     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
100       requires a new routine: seaice_diagnostics_fill.F
101     - make sure that seaice does not move if not forced (pressure replacement
102       method, Hibler and Ip, 1995), changes results
103     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
104     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
105       It is turned off by default (=-1.), because it changes the results.
106     - make it possible to read AREA from a file, too.
107    
108    checkpoint59c
109    o add S/R and diagnostics for oceanic mixed-layer depth
110    o move GMRedi call after all vertical mixing schemes (including KPP)
111    o pkg/thsice:
112     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
113      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
114    o pkg/obcs:
115     - bug fix for balance code
116    o pkg/seaice:
117      - allow values of SEAICE_elasticParm > 1
118      - add new parameter SEAICE_evpTauRelax as an alternative
119        to SEAICE_elasticParm
120      - make lsr boundary conditions free slip (by default), changes result
121      - add code for no slip boundary conditions for lsr
122      - set minimum of zeta to zero (and not 4e8) (changes results)
123      - add a cap on AREA after advecting AREA if seaice_growth is not called
124    o change calculation of Visbeck K:
125      - no longer depend on tapering scheme; instead, compute slope (limited
126        by GM_maxSlope). this is equivalent to what was comuted before with
127        clipping or linear tappering.
128      - fix vertical averaging (wrong by 1/2 level)
129      - leave the old version (but will not be maintained) within
130        #ifdef OLD_VISBECK_CALC / #endif
131      - update output of exp. ideal_2D_oce
132    o change error catch in calc_r_star to improve vectorization
133    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
134      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
135    o adjoint:
136      Re-organized adjoint checkpointing according to Matt Mazloff
137      (but with modifs/completions/cleanups)
138      Storing is now bundled into large arrays to optimized I/O
139      (and second step in cleanup of the_main_loop)
140    
141    checkpoint59b
142    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
143      - export/import (between ocean & coupler) fields needed for ocean DIC.
144    o pkg/seaice:
145      - get rid of three more exchanges seaice_calc_viscosities (required
146        different loop boundaries in seaice_lsr and seaice_ocean_stress)
147      - bug fix in seaice_ocean_stress (update of lab_sea required)
148      - reduce loop boundaries to necessary minimum also in seaice_evp
149      - go back to the old way of computing deltaC/Z as the adjoint likes that
150        better
151    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
152      passive tracer to an Age Tracer) + update output.txt
153    o pkg/exf:
154      - implement A-grid / C-grid selection for wind-stress input files.
155      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
156      for now, in exf_bulk_largeyeager04.F only :
157      - change implementation for case where windspeed + 2. components wind-stress
158        are read-in. AND use rhoConstFresh to convert evap.
159    o pkg/seaice:
160      - use correct EXCH_UV for wind-forcing (on A-grid).
161      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
162        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
163    o pkg/exf:
164      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
165      EXF_INTERPOLATION:
166      - merge global_with_exf/code version of exf_interp_read.F
167        to the main code ;
168      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
169        reading the file ; Important: This options needs to be defined to recover
170        previous code.
171        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
172      - no longer loose real*8 precision along the way when using exf_iprec=64.
173    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
174      - change discretisation of evp-solver in order to avoid another exchange
175        (changes lab_sea) and clean up a little
176      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
177        help the adjoint (this also changes the results slightly)
178      - add a few "_d 0" where they had been missing in seaice_evp.F
179      - cleaning up: remove unused seaice_calc_rhs.F
180    o pkg/exf: some cleaning-up:
181      - change various "constants" into runtime parameters
182      - cleaned-up Large&Yeager04 routine which should eventually
183        replace exf_bulkformulae.F (changed names of S/R and CPP)
184        and merged various ALLOW_ATM_WIND options
185     only used with thsice pkg (in thsice_get_exf.F):
186      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
187        which are used when useStabilityFct_overIce=TRUE (= the default)
188      - change default values of ice & snow emissivity and scale downward LW
189        by ice & snow emissivity.
190    o pkg/thsice:
191     fix few little problems, in thsice_calc_thickn.F:
192      - growth vertically (and not laterally) if iceFrac == iceMaskMax
193      - melt only laterally if hIce < hThinIce (as the comments say)
194      and in thsice_extend.F:
195      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
196      - start to form ice as soon as the minimum ice-volume is reachable.
197     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
198      and cpl_aim+ocn
199    o pkg/kpp
200     - move computation of surface related input fields to KPP into a new
201       subroutine kpp_forcing_surf.F
202     - remove wrong (within bi,bj loops) EXCH calls.
203     - little cleaning (add argument myThid in last position, cvs header ...)
204     - for now, fix conservation problem by exchanging KPPviscAz (may not
205       be the best fix)
206    o pkg/seaice
207     - check for inconsistent evp parameter/cpp-flag combination
208     - remove leftover errIO flat for obsolete name list error handling
209    o OpenAD
210     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
211    
212    checkpoint59a
213    o pkg/seaice: some parameter clarifications and a little bit of clean up
214    o pkg/thsice: rename run-time parameters:
215       himin       -> hIceMin
216       himin0      -> hThinIce
217       hihig       -> hThickIce
218       i0          -> i0swFrac
219       transCoef   -> bMeltCoef
220       frac_energy -> fracMelting
221      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
222       with default values (for now) that do not change the results.
223      remove old version of thsice vars advection in pkg/seaice.
224    o in FFIELDS.h:
225      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
226      - make pLoad & sIceLoad always available (but still only used if
227         ATMOSPHERIC_LOADING is #define).
228    o pkg/kpp: replaced _KPP_RL with _RL
229    o bug fixes for vertical diffusivity computations when both KPP and
230        3D diffusivity arrays are used.
231    o pkg/seaice: fix bug in evp solver, while doing that
232      - change (improve?) discretization of stress computations for both
233        cgrid-lsr and evp solver
234      - add a new routine to compute strain rates
235      - the above changes lab_sea results
236      - add no slip conditions for evp solver (off by default), lsr-version
237        may follow
238      - fix exchange for shear at Z-points (does not change lab_sea)
239      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
240        (to force the user to pick a time step since there is not "safe" way
241        of choosing it)
242      - add principal stress diagnostics
243      - rearrange fields for evp a little to avoid having to call a: too many
244        exchanges and b: exchanges for stress trensor components which we do
245        not have.
246      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
247        of evp, complete rewrite for lsr case (latter is does not yet work
248        in all cases)
249    o pkg/kpp: add code to have mixing in shelf ice caverns
250      - add myThid to all kpp routines (long overdue)
251    
252    checkpoint59
253    o pkg/exf:
254      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
255        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
256      - move exf header files from lower_case.h to UPPER_CASE.h ;
257        add missing cvs Header & Name
258      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
259      - add namelist param. selectStressGridPosition, exf_monFreq
260      - retire many _CLIM routines, and remove data.exf_clim
261        + params moved to data.exf
262        + climsst, climsss now handled by exf_set_gen, i.e.
263          climss?period=0 refers to constant field,
264          climss?period=-12 to monthly forcing
265      - split up namelists in data.exf
266    o pkg/seaice:
267      - remove seaice_exch and seaice_exch_uv
268      - remove superfluous exchange of theta
269      - add myThid to seaice_budget_ocean/ice
270      - add new interface for atmospheric wind forcing (C-grid only)
271        + new routine
272        + two new field (taux, tauy for stress over ice)
273        + removed one global field (DAIRN) for C-grid case only
274    o pkg/thsise
275      - 2nd set of modifs for thsice adjoint in conjunction with exf
276    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
277    
278    checkpoint58y_post
279    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
280      vertical diffusivity, similar to that in MOM4; turned on using
281      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
282      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
283    o Added capability for 3D specification of background vertical diffusion
284      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
285      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
286      "data" file that contains the 3D vertical diffusivity coefficients.
287    o ice dynamics (pkg/seaice) with thsice thermodynamics:
288      - add code within pkg thsice to advect & diffuse sea-ice fields
289      similar to (and will replace) what has been added in  seaice_advdiff.F,
290      but: - conserving Mass, Heat & Salt.
291           - better when using non-linear advection scheme (not yet fully tested)
292           - can also be used in atmospheric set-up (for now, only the diffusion).
293    
294    checkpoint58x_post
295    o IO option for global-file compact format:
296      - add options when generating topology (utils/exch2/matlab-topology-generator)
297      - add I/O capability (pkg/mdsio).
298      - adapt utils/matlab/rdmds.m to read this format.
299      for now long-line format not yet supported by pkg/mdsio (& exch2).
300    o shelfice: add a few diagnostics
301    
302    checkpoint58w_post
303    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
304      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
305      (and replace horiVertRatio in NH code).
306      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
307                         and tutorial_plume_on_slope (sensitive to truncation)
308    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
309      directly to drive seaice model (C-grid only)
310    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
311     - reintroduce computation of wind from stress,
312     - compute tau (in exf_bulkformulae.F) from windstress averaged to
313       mass points to avoid tau = 0
314     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
315    o rdmnc.m: make it work with "global" files created with gluemnc
316    o rdmnc.m : some improvements in dealing with singleton dimension
317      (tested on all testreport mnc output files).
318    o genmake2: disable pkg/profiles if netcdf test fails.
319    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
320    o move call to cal_readparms up to make calendar parameters/variable available
321      to all packages
322    
323    checkpoint58v_post
324    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
325      useDynP_inEos_Zc tested.
326    o pkg/exf: changes to properly interpolate/mask/scale initial fields
327    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
328      and portions thereof.  See read_cs.txt for description and examples.
329    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
330      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
331      following the great-circle arc between those 2 points.
332    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
333      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
334    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
335     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
336     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
337     - still needs work (not working with some options ; efficiency to improve)
338       and serious testing.
339     - use this scheme for temperature & salinity in 2 advection test exp.:
340       advect_xy & advect_xz, respectively.
341    
342    checkpoint58u_post
343    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
344    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
345    o testreport: add option "-skipdir" to skip some test.
346    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
347      momentum calculation.
348    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
349    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
350      remove checkpoint.F and the_correction_step.F (no longer used);
351      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
352    o add option (linFSConserveTr) to correct for tracer source/sink due to
353      Linear Free surface
354    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
355    o pkg/thsice: fix reading mnc-pickups
356    
357    checkpoint58t_post
358    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
359    o pkg/mdsio:
360     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
361       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
362       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
363     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
364     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
365       either MDS_READ_FIELD or MDS_WRITE_FIELD )
366     - new S/R (to replace MDSWRITEMETA), which allows to write more
367       informations (variable names, time ...) to meta files.
368     - modify rdmds.m to give back the meta file content.
369    o pkg/diagnostics: change vertical interpolation to be safer, and more
370       flexible (define p-levels to interpolate to in data.diagnostics);
371      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
372       diagnostic pointer.
373    o pkg/seaice: more cleaning up of seaice_growth, added many comments
374    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
375    o fix multi-category seaice:
376     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
377       SEAICE_MULTICATEGORY
378     - fix short wave heat flux
379    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
380       and allow to use EVP solver. Change forward lab_sea: test both EVP
381       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
382    o Initial check-in of lab_sea adjoint
383      (very similar to natl_box_adjoint/code_seaice)
384      * used C-grid and EVP solver
385      * used KPP, GM/Redi
386      * uses inAdExact=.TRUE.
387      * gradient checks fail for both ADM and TLM
388        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
389        f.d. gradients actually seem more problematic than ADM, TLM gradients;
390        issue is related to forward mismatch between g77 an ifort
391    o pkg/seaice: overhaul of thermodynamics
392     - growth.F and groatb.F are replaced by new routine seaice_growth.F
393     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
394     - move a few global fields out of SEAICE.h into seaice_growth.F and
395       make them 2D (FICE/QNETO/ ...)
396     - remove FO (it is the same as QNETO)
397     - introduce a few local fields to avoid modifying external fields such
398       as atemp, etc.
399    
400    checkpoint58s_post
401    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
402      changed exf_set_gen.F so that
403        genperiod=0 means input file is one time-constant field and
404        genperiod=-12 means input file contains 12 monthly means
405    o CG2D: use pre-computed solver main-diagonal (stored in common block);
406      this affects truncation error ; generate new output file for exp. which
407      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
408        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
409        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
410        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
411        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
412        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
413    o start implementation of deep-atmosphere and anelastic formulation
414    o verification: remove 2nd copy of input files and use script "prepare_run"
415      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
416    o mom_common/vecinv/fluxform: fix a few initialisation isssues
417    o profiles: fix for multithreaded case
418    
419    o diagnostics: rename few diags:
420      s/'PRESSURE'/'RCENTER '/g
421      s/'TICE    '/'oceFreez'/g
422      s/'TAUX    '/'oceTAUX '/g
423      s/'TAUY    '/'oceTAUY '/g
424      s/'SWFLUX  '/'oceQsw  '/g
425      s/DIFx/DFxE/g
426      s/DIFy/DFyE/g
427      and add few ocean-forcing diagnostics:
428      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
429    o modifications to pkg/seaice/growth.F and budget.F, which change results of
430      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
431      as actual snow thickness.  It now refers everywhere to effective snow
432      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
433    
434    checkpoint58r_post
435    o modifications to pkg/seaice/growth.F, which change results of
436      lab_sea experiment: fixes pertain to melting snow over open water, to
437      masking EVAP under sea ice, and to using the correct AREA variable for
438      computations of EVAP, PRECIP, HSNOW, and GHEFF
439    o add ability to read bathy, salt, and theta using MNC (off by def)
440    o add flooding algorithm and advection of HSNOW for pkg/seaice;
441      both are turned off by default and do no change any results
442    o seaice advection with pkg/thsice: a step toward the use of non-linear
443      advection scheme, but #ifdef or commented out for now (requires more EXCH).
444    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
445      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
446      in natl_box (affects results @ truncation level: update output.txt)
447    o multi-threading and IO:
448      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
449      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
450        (needed to work with SingleCpuIO): tested in all verif. exp.
451    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
452      affects the results (but none of the verification test uses this scheme).
453    o Adding some pkg/diagnostics capability to pkg/seaice
454      (will certainly be subject to changes)
455    o ctrl: adding new control variables:
456      lwflux, lwdown, evap, snowprecip, apressure, runoff
457    
458    checkpoint58q_post
459    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
460      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
461      high_res_cube configuration by 4% on Columbia.
462    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
463      add (in global_with_exf/code) a version of EXF_INTERP_READ without
464      dynamical allocation (seems to work in multi-threaded).
465    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
466      single CPU io) so that TAF does not have to see EESUPPORT.h
467    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
468    
469    checkpoint58p_post
470    o obcs: stop if obcs is used with useCDscheme = .true.
471    o shelfice:
472     - fix a sign error so that no slip at shelfice interface works
473     - remove stop for combination non-hydrostatic code and shelfice. That does
474       not mean, that the results are correct, but at least they are numerically
475       stable
476    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
477    o added adjoint exch routined for all exch*3d* routines
478      and updated flow directives
479    
480    checkpoint58o_post
481    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
482      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
483    o change controling S/R for writing pickup file (new S/R do_write_pickup)
484      and clean-up reading/writing of pickup files.
485    o fix local version of read/write pickup (NH part) in rotating_tank/code
486    o simplify EXCH interface:
487     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
488     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
489    o added the regrid package
490    o shelfice:
491     - add a simple boundary layer scheme to reduce noise
492     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
493    
494    checkpoint58n_post
495    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
496       local variable (not in common block).
497    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
498      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
499      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
500        to work with SingleCpuIO.
501    o add "_d 0" to real constant of pkg/cfc subroutines ;
502       update exp. cfc_exemple & tutorial_cfc_offline output files.
503    o multi-threading and IO:
504      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
505        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
506      - barrier before and after reading.
507      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
508      - avoid using MDS_WRITELOCAL for LAND pkg output.
509      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
510        common-block variables ; Allows multi-threading with master-thread IO.
511    o change default MAX_NO_THREADS from 32 to 4 ;
512      and stop cleanly when MAX_NO_THREADS is too small.
513    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
514    
515    checkpoint58m_post
516    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
517       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
518    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
519       keep global_ocean.90x40x15 (for AD testing) with former secondary test
520       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
521    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
522        add MITgcm_tutorials (= code + all the tutorials)
523    o ecco, option to compute cost for total ssh (mean+anom)
524    o consistent with addition of ptracer and ssh in pkg/profiles
525    o profiles: adding ptracer and ssh
526    o testreport: change multi-test output-file name
527      (from output.txt.{name} to output.{name}.txt)
528    o profiles: now ok for mutli-tiles case
529    o seaice: add 4 parameters for different advection schemes for area,
530      (effective) seaice thickness, enthalphy, and snow height. Their default
531      is the standard parameter SEAICEadvScheme
532    o calc_gw:
533     - add cosFacU in zonal viscous flux (harmonic.visc.).
534     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
535       of tutorial_plume_on_slope.
536    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
537    o calc_gw: true flux-form, account for horizontal grid spacing.
538      update rotating_tank results, but not plume_on_slope (affected at
539      truncation level, 11 digits).
540    
541    checkpoint58l_post
542    o calc_gw:
543     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
544     - remove side-drag for now (need to fix it); update plume_on_slope results.
545     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
546    o commit code to make SST/SSS weights spatially variable
547      (based on either variable in-situ or variable initial T/S weights)
548    o pkg/ecco:
549      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
550        now based on horizontally varying weights wthetaLev, wsaltLev
551      * cost_averagesflags now returns year indices in addition to day, month
552      * sflux balance is performed on annual basis
553        (sflxumm, sfluxmm2, bal_sfluxmm)
554      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
555        including separate counting and multipliers
556    o pkg/rbcs
557      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
558    
559    checkpoint58k_post
560    o testreport:
561     - always build in dir. "build" (if not there, mkdir build instead of building
562       & running in input)
563     - run in dir run (if it exists), in build otherwise.
564     - call prepare_run (if input/prepare_run exists)
565     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
566    o pkg/exf modifications to interpolation and rotation routines for more
567       reasonable treatment of North Pole singularity: for tracers North Pole
568       value is set to northernmost zonal-mean value, for zonal velocity it is
569       set to zero, and for meridional velocity it is set to northernmost value.
570    o pkg/exf/exf_check_range.F
571     - add tile index to diagnostics and move stop statement to the very
572       end of the routine.
573    o pkg/diagnostics: (diagnostics_main_init.F)
574      define title of isomorphic variables according to the current config.
575    o pkg/thsice with pkg/seaice dynamics:
576    - fix domain of computation (interior only, required for exf) and do exchanges
577    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
578    o towards a standard way of dealing with multi-threading in MONITOR
579      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
580    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
581       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
582    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
583    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
584    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
585       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
586    o tracer advection:
587     - clean-up and simplify calc_common_factors.F
588     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
589       advection subroutine (but still not used within DST advection S/R)
590    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
591    
592    checkpoint58j_post
593    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
594      from file (collects calls previously in FORWARD_STEP)
595    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
596    o adjoint store dir. adjusted accordingly
597    o genmake2
598      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
599    
600    checkpoint58i_post
601    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
602      on wind stress (SEAICEstressFactor defaults to 1.)
603    o Total number of Timers is finite (<=40): comment out 2 non-essential one
604      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
605    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
606      on CS-grid: no longer loosing mass.
607    o exf & curvilinear-grid: no longer modify longitude xC & xG.
608    o pkg/ggl90: fix sloppy output and fix a bug
609    o pkg/seaice: added SEAICEuseEVPpickup parameter
610      - Set to false in order to start EVP solver with
611        non-EVP pickup files when using SEAICEuseEVP
612      - fix sign error in diffusion in seaice_calc_rhs
613    
614    checkpoint58h_post
615    * Modifications for bottom topography control
616      o replace hFacC by _hFacC at various places
617      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
618      o add non-self-adjoint cg2d_nsa
619      o update autodiff support routines
620      o re-initialise hfac after ctrl_depth_ini
621      o works for 5x5 box, doesnt work for global_ocean.90x40x15
622    * Adding verification for 5x5 box (4-layer) bottom topography control
623    
624    checkpoint58g_post
625    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
626       used for mean seasonal cycle, mean diurnal cycle); add an example
627       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
628    o pkg/ggl90:
629      - add parameter (minimum surface kinetic energy)
630      - fix bug (avoiding division by zero)
631    o couple pkg/thsice to pkg/seaice:
632      - modify advection in seaice to accomodate new scalar fields to be advected
633      - only muliDimAdection scheme work with seaice/thsice
634      - mapping of thsice-variables to seaice-variables, back and forth
635      - does not break the verification experiments, but does not give the
636        desired results either
637    o pkg/seaice
638      - make (default) second order advection a bit less confusing?
639    
640    checkpoint58f_post
641    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
642      to pkg/seaice):
643      - new routines thsice_map_exf and thsice_get_exf provide the interface
644      - add an additional formal parameter to thsice_solve4temp
645    o pkg/exf:
646      - add new fields wspeed, snowprecip (to be able to couple to thsice)
647      - correct Stefan-Boltzmann constant
648      - new parameter for longwave surface emittance
649      - separate some stuff from exf_bulkformulae into new routines  
650        exf_radiation, exf_wind
651      - add new parameters and constants: longwave emissivity for ocean, ice
652        and snow, evaporation parameters over ice
653      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
654        either wind from stress or stress from wind
655    o pkg/thSIce:
656    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
657    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
658       and THSICE_CALC_THICKN
659    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
660    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
661      to make debugging easier.
662    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
663    o pkg/bulk_force:
664      - clean-up comments and parameters ;
665      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
666    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
667      generate new output for test-experiment: aim.5l_cs.thSI
668    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
669      testreport accordingly
670    
671    checkpoint58e_post
672    o SEAICE_CGRID adjoint done
673    o R_STAR adjoint implemented.
674      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
675      * need to sort out init. of h0facc, etc.
676    o Make pkg/profile fully independent of ecco,cost, etc. stuff
677      to be able to use it in pure forward.
678    
679    checkpoint58d_post
680    o upgrade simple test-experiment to tutorial example:
681     step.1: duplicate the experiment and (step.2) will remove the old copy.
682      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
683      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
684      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
685      tutorial_global_oce_biogeo    <- copy of dic_example
686      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
687      tutorial_plume_on_slope       <- copy of plume_on_slope
688      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
689      tutorial_global_oce_optim     <- empty for now (David ?)
690      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
691     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
692    o correct a sign problem in cost_scat.F
693    o obcs and ptracers: fix boundary conditions for advections schemes
694      with larger stencil
695    o thsice adjoint: start
696    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
697      completeness
698    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
699      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
700    o ptracers adjoint:
701      * avoid extensive recomputatations
702      * fix missing re-init. of gptr (missed by TAF)
703    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
704      me to turn off the excessive output to STDOUT that this package produces
705    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
706      and add those terms in Vector-Invariant formulation.
707    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
708      if the control period (xx_hfluxperiod etc) is 0
709    o in profiles pkg, clean routines and fix details
710    o in ecco pkg, reading ssh data:
711      fix problem in case the model does not start at iter0=0
712    o fix mnc-pickup/restart for ptracers
713    o new package prifiles:
714      code to compute profile-based cost by Gael Forget
715      (modifs in ecco, ctrl, autodiff)
716    o Benign bug fix in initialization (spotted by M. Mazloff) of
717      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
718    
719    checkpoint58c_post
720    o adjoint: finish NLFS adjoint and provide reference output in
721      verification/global_ocean.90x40x15/results_ad_nlfs
722    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
723      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
724      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
725      with SEAICE_CGRID defined.
726    o move calendarDumps from "data" to "data.cal" and clean-up the code
727      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
728    o add useEXF & useCAL flags (for now, set in hard-coded way)
729    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
730      (were missing in NH mode, and wrong in quasihydrostatic mode).
731      waiting for Chris updated version of calc_gw to add those CALLs.
732    o fix bug in quasihydrostatic S/R ;
733      add a test for this option: global_ocean.90x40x15.qshyd
734    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
735      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
736    o add on/off flag useOffLine for package OFFLINE
737    o seaice:
738      - modify advection so that it works also on the C-grid
739      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
740        problem in multi-tile runs with C-grid
741      - add flags for clipping ice velocities and/or masking solver forcing
742      - fix drag (ocean on ice) formulation and a bug that caused noise in the
743        C-grid solver
744      - added a few comments to seaice_diffusion.F
745      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
746        are now exclusive)
747      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
748        required re-ordering the code a little:
749       + make DAIRN global variable (defined in SEAICE)
750       + move computation of the viscosities eta and zeta into a new separate
751         routine (because I need to recompute them in seaice_ocean_stress.F)
752    
753    checkpoint58b_post
754    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
755      update output.txt of exp. aim.5l_cs.thSI
756    o various mnc cleanups and improvements:
757      + shrink lookup tables by factor of ~4
758      + better error reporting when running out of lookup space
759      + able to handle longer path/file names (up to 500 chars)
760    o adjoint:
761      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
762      - TBD: "hidden" mom_vecinv recomp. in dynamics
763    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
764     (allow to differentiate between forcing components using new integer flags:
765      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
766     and add new flag to put Dissipation tendency out of Adams-Bashforth.
767    o ecco
768      - enable trend removal from SSH anomaly obs.
769    o adjoint
770      - a fix for PmEpR when #undef EXACT_CONSERV
771      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
772      - try to fix "hidden" recomp. in forward_step for NLFS
773        (NLFS seems broken sometimes after I checked it in)
774    o seaice:
775     - add c-grid version of the dynamic solver:
776       + three new routines that are the c-grid substitute lsr, dynsolver
777         and ostres
778       + put a few fields that were local to dynsolver into global common
779         blocks, so that I can move the computation of stresses etc into
780         seaice_lsr (saves coding but may break the adjoint).
781     - replace more hardwired parameters by runtime parameters
782     - add ice masks that mask the rhs of the implicit solvers where there
783       is no ice (commented out in seaice_dynsolver, because i am not sure
784       if this works properly), eventually this should replace the clipping
785       of ice velocities in seaice_dynsolver to +/-40cm/s.
786    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
787      include it only where its needed
788    o move balancing of fluxes before the call of external_forcing_surf
789    o seaice:
790      - correct units of turning angles (now they are really in degrees)
791      - move computation of GWATX/Y out of main routine into dynsolver
792      - initialize GWATX/Y in seaice_init
793    o Apply mask on Fresh-Water flux (needed for SSH forcing).
794      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
795    o seaice: add runtime flags for turning angles (default to zero)
796    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
797      and trend from exf forcing and ctrl control adjustments
798    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
799      (since checkpoint57x_post)
800    o change the default rotation period to 86164.s = the Earth rotation
801    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
802      and based on a reference stratification. Tested within hs94.cs-32x32x5.
803    o seaice advection: add code for choosing between the default (2nd order
804      central differences) and multiDim advection schemes provided by
805      pkg/generic_advdiff
806    o seaice:
807      - removed all references to SEAICE_GRID.h fields from
808        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
809        (cubed-sphere configuration will change a little)
810      - grid computations in seaice_init are obsolete now.
811      - cleaned up code a little so that is easier to read (hopefully).
812      - added new (better?) discretizations of default advection and diffusion
813        (turn on with SEAICEuseFluxForm)
814      - replace 1 in 3d global fields by kSurface in growth.F
815      
816    checkpoint58a_post
817    o seaice:
818      - bug fix in advect.F
819    o shelfice:
820      - separate shelfice load anomaly from pload (breaks with time
821        dependent forcing), => introduce constant field shelficeLoadAnomaly.
822        Its default is 0., but it may be computed more cleverly from (unknown)
823        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
824        done offline. A good approximation of the pressure load anomaly is
825        necessary to avoid large initial adjustment processes underneath
826        deep-reaching shelfice.
827      - small fix in ISOMIP shelfice_thermodynamics
828      - add more sophisticated thermodynamics of Hellmer (1989), this is
829        now the default
830      - give a few constants more intuitive names
831    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
832      if bulk formulae are used in long integration (especially EmPmR). Turn
833      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
834      if balancePrintMean, the imbalance that is substracted is printed to
835      STDOUT.
836    o fix bug (typo) in obcs_apply_eta.F
837    o add a new package shelfice which enables us to model the circulation
838      underneath shelf-ice with draughts of hundreds of meters.
839     - works
840     - to do: + include improved thermodynamics
841              + check whether kSurfC (from model/inc/SURFACE.h) can be used
842                instead of new field kTopC
843              + can we use topoFile, Ro_surf and existing code in ini_depth.F
844                instead of new field R_shelfIce and new code in ini_depth.F
845                and ini_mask_etc.F?
846              + adjust vertical mixing schemes?
847    o seaice pkg:
848     - add a cpp-flag to include a simple formula for a salinity dependent
849       freezing point of sea water at the surface
850     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
851       meridional stresses are now different (and hopefully correct)
852    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
853       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
854       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
855    o pkg/diagnostics: add options and parameters for regional-statistics
856       diagnostics ; define regions by reading a region-mask from a file
857       (might add other options later)
858    o pkg/bulk_force:
859     - add option and parameters to use AIM surface-flux formulae.
860     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
861       others forcing fields (defined in PARM05, parameter file "data") are loaded
862       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
863     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
864     - use the right EXCH call for uwind,vwind (to work on CS-grid).
865     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
866       and parameters (note: calcWindStress replaces .NOT.readwindstress).
867     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
868    
869    checkpoint58
870    o add "--embed-source" option to genmake2 which, when the supporting
871      tools can be compiled (as determined by genmake2) will turn on the
872      embed_files package which then embeds the entire MITgcm source code
873      (*.[fFhc] + Makefile) used for the build within the executable
874      - requested by CNH but off by default
875      - adds a paltry <9MB to the mitgcmuv executable in most cases
876      - only writes the output when useEMBEDSRC in eedata is true
877    o clean up 3-dim. relaxation codes:
878      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
879      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
880      * Thanks to Tom Haine for testing!
881    
882    checkpoint57z_post
883    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
884      affects output (@ truncation level) of exp. plume_on_slope ; updated.
885    o fix the pickup behavior for obcs in combination with ptracers
886    o fix a bug in ptracers_external_fields_load
887    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
888      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
889    o transfered surface NH pressure to eta field (if exactConserv).
890    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
891         and update lab_sea output.txt file.
892    o completing 3-dim. relaxation code: additional term
893         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
894      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
895      * At compile time, in "EXF_OPTIONS.h" set
896          #define  ALLOW_CLIMTEMP_RELAXATION
897          #define  ALLOW_CLIMSALT_RELAXATION
898      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
899          tauThetaClimRelax3Dim = 15552000.0,
900          tauSaltClimRelax3Dim  = 15552000.0,
901      * 3 cases:
902          1) Use a constant-in-time 3-dim. field
903          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
904          3) Real-time relax. to time-evolving prescribed field
905    o Adding Laplacian-type smoothness constraint on
906      initial and boundary (forcing) controls (ic, bc)
907      * enable at compile-time via
908        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
909      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
910      * Absolute scale somewhat unclear so far
911      * no area weighting was included since no other cost term does so far
912    
913    checkpoint57y_post
914    First step for a NLFS adjoint
915    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
916    o new init. routines for calc_r_star, calc_surf_dr
917    o still need to deal with ini_masks_etc
918    o testreport seemed happy
919    checkpoint57y_pre
920    
921    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
922    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
923    o add new offset feature to offline pkg (plus minor cleanup)
924    o cfc fixes for final year of integration
925    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
926      be in GCHEM_OPTIONS).
927    
928    checkpoint57x_post
929    o fix testreport Pb in multiple test experiment.
930    o cleanup our namelist syntax in verification:
931      - make it more F95 standards compliant (some work still needed)
932      - allows the vast majority of our tests to work with gfortran
933    o Non-Hydrostatic:
934     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
935     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
936    o Allow to apply AB on T,S rather than on AB(gT,gS):
937     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
938     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
939       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
940     - need a "clever" read_pickup to restart from the other AB formulation
941    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
942    o remove some unused variables (reduces number of compiler warnings)
943    o adjoint
944      * Disable useVariableViscosity for adjoint for time being
945        (there are a number of extensive recomputations)
946      * Initialize certain variables needed for adjoint
947    
948    checkpoint57w_post
949    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
950                 fix the singleCpuIO RS version of MDSWRITEFIELD
951       and add a WARNING if using globalFiles=T with multi-processors.
952    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
953      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
954    o tracer advection scheme:
955      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
956       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
957       was not very convenient).
958      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
959       (further tests needed for the implicit DST & Flux-Limiter schemes).
960    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
961      and sRef for convenience, handy, when you want to initialize
962      ptracers in a large domain with a constant non-zero value. Also,
963      untangle ptracers_init.F a little.
964    
965    checkpoint57v_post
966    o change dome exp. to use variable viscosity in side-drag terms.
967    o remove all the files from the cfc_offline test since they are now
968      incorporated into tutorial_cfc_offline which has been producing
969      identical results for a few days of testing
970    o add new parameter: sideDragFactor to enable half-slip-side BC
971      and change side-drag S/R to use viscosity from mom_calc_visc
972      (can switch back by setting sideDragFactor=0.); affects results at
973      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
974       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
975    o vorticity & strain are now computed without masking, to account for
976      no-slip-side BC in variable viscosity calculation ; mask is applied
977      anyway later on, before computing advection/coriolis terms.
978    o modify exp4 to test new obcs support for reading from external files
979      and for passive tracers
980    o fix behavior of ptracers_monitor when monitor output is written to a
981      netcdf-file; still not independent of monitor.F (writes in the same
982      file).
983    o change default value of tRef (put a uniform, meaningful value for ocean
984      & atmos) and initialize sRef (was missing, as Martin mentioned).
985    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
986      to be proportional to enstrophy dissipation length.  Thus,
987       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
988      This is now consistent with Smagorinsky and with the manual.
989    
990    checkpoint57u_post
991    o OBCS and PTRACERS: add open boundary support for passive tracers
992      - either use homogenous (pseudo) v.Neumann conditions or prescribe
993        OB-values from file; this is not different from the way theta and salinity
994        are treated
995      - however, Orlanski-radiation conditions are not supported, and the model
996        will stop if you use pTracers and Orlanski at the same time.
997      - beefed up the rountine obcs_external_fields_load: now only those open
998        boundary values are overwritten with values from files for which there
999        are really files, otherwise the OB-fields remain untouched. This makes
1000        it possible to use different OBs at different ends of the domain (as
1001        with EXF)
1002    o reduce number of exch calls in shap_filt (s2).
1003    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1004      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1005    
1006    checkpoint57t_post
1007    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1008    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1009      same truncation, independent of the face number: affects affects several
1010      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1011    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1012      note that biharmonic viscosity + no-slip was not tested in any experiment.
1013    o fix bug in non-linear free-surf side-drag ; generate new output for
1014      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1015    o make mnc honor the writeBinaryPrec flag for most kinds of output
1016    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1017    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1018      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1019    o add brackets in multi-terms sum to get same truncation, independent of
1020      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1021      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1022    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1023      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1024      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1025      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1026      Suggested values of viscosity parameters found in mom_calc_visc.
1027      Many new viscosity diagnostics available.
1028    
1029    checkpoint57s_post
1030    o Add clearing-house for viscosity calculations, mom_calc_visc and
1031      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1032      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1033      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1034      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1035      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1036      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1037      ViscAhStrain and viscAhTension are now retired.
1038    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1039    o In response to JMC's bug report, genmake2 now ignores any soft-links
1040      that it finds in the *current* directory when searching for files.
1041      Soft-links found in any other source directories will still work as
1042      they did before.
1043    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1044      a C routine to unlimit the stack size
1045    o mnc-ify pkg/aim snapshot vars
1046    o mnc-ify pkg/land as requested by Daniel
1047    o various changes to mnc including:
1048      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1049      - output can now be grouped so that all files within a group
1050          change the ITER portion of their names in lock-step together
1051      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1052          and works with both EXCH1 and EXCH2 (but needs more testing)
1053      - writing works for all verification test cases w/ g77 on Linux
1054    
1055    checkpoint57r_post
1056    o make MNC variable initialization happen earlier
1057    o add diagnostics for (almost) each term of the momentum Eq.
1058    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1059    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1060    o remove MINIMAL_TAVE_OUTPUT option ;
1061      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1062    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1063      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1064    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1065    o add time-dependent SST, SSS control
1066    o cost terms in ecco/ modularized (new cost_generic.F)
1067    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1068    o new infrastructure for seaice model vs. obs misfits in seaice/
1069      * driver from the_main_loop.F is seaice_cost_driver.F
1070      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1071      * gradient check in Exp. 6a of natl_box_adjoint/
1072    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1073      (see README file)
1074    
1075    checkpoint57q_post
1076    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1077    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1078      - bug was reported by Jean-Michel and Ian Fenty
1079    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1080      update exp. cpl_aim+ocn output.
1081    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1082      Needed for high-res. runs with large global files
1083      to be able to limit tapelev size
1084    o Changed some tests for adjoint:
1085      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1086      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1087      * global_ocean.90x40x15/ back to default 3-level checkpointing
1088    o Modifications to enable scripted COMMON to MODULE conversion
1089      * verification/OpenAD/code/ has necessary scripts and description;
1090      * converts, compiles and runs successfully;
1091    
1092    checkpoint57p_post
1093    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1094    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1095      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1096    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1097    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1098      (was already the case for dissipation with mom_vecinv,
1099       and also the case for grad.PhiHyd when staggered-timeStep)
1100      This will allow to put dissipation out-off the AB time-stepping.
1101     Unfortunately, affects truncation error. Update output of exp. that "fails"
1102      (cg2d matching number) and leave the others for later: front_relax(10),
1103      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1104      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1105    
1106    checkpoint57o_post
1107    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1108      (2) its ready to be documented during the 20050801 DocFest
1109    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1110      for ideal_2D_oce and lab_sea on linux_ia32_g77
1111    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1112      in global1x1_tot/code_seaice_adj to access indices 32, 33
1113      (worth another tag)
1114    
1115    checkpoint57n_post
1116    o adding precip control xx_precip 32
1117    o adding swflux control xx_swflux 33
1118    o Replacing 10 forcing penalty cost routines by 1 generic.
1119    o Implementing partitioning in time-mean and variable adjustment
1120      for atmos. state.
1121    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1122  o in natl_box_adjoint:  o in natl_box_adjoint:
1123    * updated: results_bulk/    * updated exp 1 to 10
1124    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1125    o updated global1x1/*_seaice_adj/
1126      to incorporate latest changes
1127    o enable useSingleCpuIO for mdsio vector routines
1128      (applies in particular to tapelev I/O)
1129    o removed inefficient K-loop in all active_file*control*.F
1130    
1131  checkpoint57m_post  checkpoint57m_post
1132  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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