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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.849 by dimitri, Wed Jul 18 22:26:05 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 gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8  o moved ptracer ctrl index 17 -> 32    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:
17      * added computation of saltFlux in seaice_growth;
18        For time being, sea ice salinity is assumed constant
19        contribution of snow flooding to freshening of sea ice is neglected.
20        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
21        defaults to 0.0 in order to maintain backward compatibility.
22        Typical values for SEAICE_salinity are 4 to 10 g/kg.
23      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
24      * added SEAICE_availHeatFrac, which specifies fraction of surface level
25        heat content used to melt or grow ice
26      * commented out cap of HICE: it helps keep ice thinner
27      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
28    
29    checkpoint59d
30    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
31     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
32     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
33    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
34     and change default value of parameter "GM_Small_Number";
35     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
36       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
37       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
38    o pkg/ecco: cost function when applying pkg/smooth to controls
39    o pkg/ctrl: add forcingPrecond run time parameter
40    o pkg/seaice:
41     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
42     - fix bug in metric terms of u-equation in LSR solver (implicit part),
43       changes verification/lab_sea
44     - rearrange implicit part of u-equation in LSR solver to make it easier to
45       read, understand, and debug. This causes changes at the truncation level.
46     - fix (serious) bug in the boundary conditions (sign error in the implicit
47       part) of the LSR solver. Changes all LSR results.
48     - fixed problem with HSNOW initialization to avoid thick snow when AREA
49       is initilized with small values - does not change lab_sea results.
50     - added HsnowFile initialization capability
51    o pkg/smooth: addition to model/src and pkg/ctrl so allow
52     initialization of pkg/smooth and application to control vector
53    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
54    o dependencies: pkg/profiles requires pkg/cal
55    o pkg/profiles:
56     - added option ALLOW_PROFILES_GENERICGRID
57         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
58         that interpolation information (grid points and coefficients) is provided
59         within the netcdf input files.
60         -> sample matlab scripts can be found in MITgcm_contrib/gael
61         that allow you to prepare netcdf input files.
62     - also modified: cleaner include statements, cleaner error print statements,
63       cleaner stops when error, and more tests of the netcdf input files consistency.
64    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
65    o pkg/seaice:
66     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
67       requires a new routine: seaice_diagnostics_fill.F
68     - make sure that seaice does not move if not forced (pressure replacement
69       method, Hibler and Ip, 1995), changes results
70     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
71     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
72       It is turned off by default (=-1.), because it changes the results.
73     - make it possible to read AREA from a file, too.
74    
75    checkpoint59c
76    o add S/R and diagnostics for oceanic mixed-layer depth
77    o move GMRedi call after all vertical mixing schemes (including KPP)
78    o pkg/thsice:
79     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
80      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
81    o pkg/obcs:
82     - bug fix for balance code
83    o pkg/seaice:
84      - allow values of SEAICE_elasticParm > 1
85      - add new parameter SEAICE_evpTauRelax as an alternative
86        to SEAICE_elasticParm
87      - make lsr boundary conditions free slip (by default), changes result
88      - add code for no slip boundary conditions for lsr
89      - set minimum of zeta to zero (and not 4e8) (changes results)
90      - add a cap on AREA after advecting AREA if seaice_growth is not called
91    o change calculation of Visbeck K:
92      - no longer depend on tapering scheme; instead, compute slope (limited
93        by GM_maxSlope). this is equivalent to what was comuted before with
94        clipping or linear tappering.
95      - fix vertical averaging (wrong by 1/2 level)
96      - leave the old version (but will not be maintained) within
97        #ifdef OLD_VISBECK_CALC / #endif
98      - update output of exp. ideal_2D_oce
99    o change error catch in calc_r_star to improve vectorization
100    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
101      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
102    o adjoint:
103      Re-organized adjoint checkpointing according to Matt Mazloff
104      (but with modifs/completions/cleanups)
105      Storing is now bundled into large arrays to optimized I/O
106      (and second step in cleanup of the_main_loop)
107    
108    checkpoint59b
109    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
110      - export/import (between ocean & coupler) fields needed for ocean DIC.
111    o pkg/seaice:
112      - get rid of three more exchanges seaice_calc_viscosities (required
113        different loop boundaries in seaice_lsr and seaice_ocean_stress)
114      - bug fix in seaice_ocean_stress (update of lab_sea required)
115      - reduce loop boundaries to necessary minimum also in seaice_evp
116      - go back to the old way of computing deltaC/Z as the adjoint likes that
117        better
118    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
119      passive tracer to an Age Tracer) + update output.txt
120    o pkg/exf:
121      - implement A-grid / C-grid selection for wind-stress input files.
122      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
123      for now, in exf_bulk_largeyeager04.F only :
124      - change implementation for case where windspeed + 2. components wind-stress
125        are read-in. AND use rhoConstFresh to convert evap.
126    o pkg/seaice:
127      - use correct EXCH_UV for wind-forcing (on A-grid).
128      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
129        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
130    o pkg/exf:
131      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
132      EXF_INTERPOLATION:
133      - merge global_with_exf/code version of exf_interp_read.F
134        to the main code ;
135      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
136        reading the file ; Important: This options needs to be defined to recover
137        previous code.
138        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
139      - no longer loose real*8 precision along the way when using exf_iprec=64.
140    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
141      - change discretisation of evp-solver in order to avoid another exchange
142        (changes lab_sea) and clean up a little
143      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
144        help the adjoint (this also changes the results slightly)
145      - add a few "_d 0" where they had been missing in seaice_evp.F
146      - cleaning up: remove unused seaice_calc_rhs.F
147    o pkg/exf: some cleaning-up:
148      - change various "constants" into runtime parameters
149      - cleaned-up Large&Yeager04 routine which should eventually
150        replace exf_bulkformulae.F (changed names of S/R and CPP)
151        and merged various ALLOW_ATM_WIND options
152     only used with thsice pkg (in thsice_get_exf.F):
153      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
154        which are used when useStabilityFct_overIce=TRUE (= the default)
155      - change default values of ice & snow emissivity and scale downward LW
156        by ice & snow emissivity.
157    o pkg/thsice:
158     fix few little problems, in thsice_calc_thickn.F:
159      - growth vertically (and not laterally) if iceFrac == iceMaskMax
160      - melt only laterally if hIce < hThinIce (as the comments say)
161      and in thsice_extend.F:
162      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
163      - start to form ice as soon as the minimum ice-volume is reachable.
164     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
165      and cpl_aim+ocn
166    o pkg/kpp
167     - move computation of surface related input fields to KPP into a new
168       subroutine kpp_forcing_surf.F
169     - remove wrong (within bi,bj loops) EXCH calls.
170     - little cleaning (add argument myThid in last position, cvs header ...)
171     - for now, fix conservation problem by exchanging KPPviscAz (may not
172       be the best fix)
173    o pkg/seaice
174     - check for inconsistent evp parameter/cpp-flag combination
175     - remove leftover errIO flat for obsolete name list error handling
176    o OpenAD
177     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
178    
179    checkpoint59a
180    o pkg/seaice: some parameter clarifications and a little bit of clean up
181    o pkg/thsice: rename run-time parameters:
182       himin       -> hIceMin
183       himin0      -> hThinIce
184       hihig       -> hThickIce
185       i0          -> i0swFrac
186       transCoef   -> bMeltCoef
187       frac_energy -> fracMelting
188      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
189       with default values (for now) that do not change the results.
190      remove old version of thsice vars advection in pkg/seaice.
191    o in FFIELDS.h:
192      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
193      - make pLoad & sIceLoad always available (but still only used if
194         ATMOSPHERIC_LOADING is #define).
195    o pkg/kpp: replaced _KPP_RL with _RL
196    o bug fixes for vertical diffusivity computations when both KPP and
197        3D diffusivity arrays are used.
198    o pkg/seaice: fix bug in evp solver, while doing that
199      - change (improve?) discretization of stress computations for both
200        cgrid-lsr and evp solver
201      - add a new routine to compute strain rates
202      - the above changes lab_sea results
203      - add no slip conditions for evp solver (off by default), lsr-version
204        may follow
205      - fix exchange for shear at Z-points (does not change lab_sea)
206      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
207        (to force the user to pick a time step since there is not "safe" way
208        of choosing it)
209      - add principal stress diagnostics
210      - rearrange fields for evp a little to avoid having to call a: too many
211        exchanges and b: exchanges for stress trensor components which we do
212        not have.
213      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
214        of evp, complete rewrite for lsr case (latter is does not yet work
215        in all cases)
216    o pkg/kpp: add code to have mixing in shelf ice caverns
217      - add myThid to all kpp routines (long overdue)
218    
219    checkpoint59
220    o pkg/exf:
221      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
222        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
223      - move exf header files from lower_case.h to UPPER_CASE.h ;
224        add missing cvs Header & Name
225      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
226      - add namelist param. selectStressGridPosition, exf_monFreq
227      - retire many _CLIM routines, and remove data.exf_clim
228        + params moved to data.exf
229        + climsst, climsss now handled by exf_set_gen, i.e.
230          climss?period=0 refers to constant field,
231          climss?period=-12 to monthly forcing
232      - split up namelists in data.exf
233    o pkg/seaice:
234      - remove seaice_exch and seaice_exch_uv
235      - remove superfluous exchange of theta
236      - add myThid to seaice_budget_ocean/ice
237      - add new interface for atmospheric wind forcing (C-grid only)
238        + new routine
239        + two new field (taux, tauy for stress over ice)
240        + removed one global field (DAIRN) for C-grid case only
241    o pkg/thsise
242      - 2nd set of modifs for thsice adjoint in conjunction with exf
243    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
244    
245    checkpoint58y_post
246    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
247      vertical diffusivity, similar to that in MOM4; turned on using
248      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
249      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
250    o Added capability for 3D specification of background vertical diffusion
251      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
252      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
253      "data" file that contains the 3D vertical diffusivity coefficients.
254    o ice dynamics (pkg/seaice) with thsice thermodynamics:
255      - add code within pkg thsice to advect & diffuse sea-ice fields
256      similar to (and will replace) what has been added in  seaice_advdiff.F,
257      but: - conserving Mass, Heat & Salt.
258           - better when using non-linear advection scheme (not yet fully tested)
259           - can also be used in atmospheric set-up (for now, only the diffusion).
260    
261    checkpoint58x_post
262    o IO option for global-file compact format:
263      - add options when generating topology (utils/exch2/matlab-topology-generator)
264      - add I/O capability (pkg/mdsio).
265      - adapt utils/matlab/rdmds.m to read this format.
266      for now long-line format not yet supported by pkg/mdsio (& exch2).
267    o shelfice: add a few diagnostics
268    
269    checkpoint58w_post
270    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
271      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
272      (and replace horiVertRatio in NH code).
273      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
274                         and tutorial_plume_on_slope (sensitive to truncation)
275    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
276      directly to drive seaice model (C-grid only)
277    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
278     - reintroduce computation of wind from stress,
279     - compute tau (in exf_bulkformulae.F) from windstress averaged to
280       mass points to avoid tau = 0
281     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
282    o rdmnc.m: make it work with "global" files created with gluemnc
283    o rdmnc.m : some improvements in dealing with singleton dimension
284      (tested on all testreport mnc output files).
285    o genmake2: disable pkg/profiles if netcdf test fails.
286    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
287    o move call to cal_readparms up to make calendar parameters/variable available
288      to all packages
289    
290    checkpoint58v_post
291    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
292      useDynP_inEos_Zc tested.
293    o pkg/exf: changes to properly interpolate/mask/scale initial fields
294    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
295      and portions thereof.  See read_cs.txt for description and examples.
296    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
297      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
298      following the great-circle arc between those 2 points.
299    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
300      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
301    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
302     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
303     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
304     - still needs work (not working with some options ; efficiency to improve)
305       and serious testing.
306     - use this scheme for temperature & salinity in 2 advection test exp.:
307       advect_xy & advect_xz, respectively.
308    
309    checkpoint58u_post
310    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
311    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
312    o testreport: add option "-skipdir" to skip some test.
313    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
314      momentum calculation.
315    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
316    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
317      remove checkpoint.F and the_correction_step.F (no longer used);
318      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
319    o add option (linFSConserveTr) to correct for tracer source/sink due to
320      Linear Free surface
321    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
322    o pkg/thsice: fix reading mnc-pickups
323    
324    checkpoint58t_post
325    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
326    o pkg/mdsio:
327     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
328       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
329       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
330     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
331     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
332       either MDS_READ_FIELD or MDS_WRITE_FIELD )
333     - new S/R (to replace MDSWRITEMETA), which allows to write more
334       informations (variable names, time ...) to meta files.
335     - modify rdmds.m to give back the meta file content.
336    o pkg/diagnostics: change vertical interpolation to be safer, and more
337       flexible (define p-levels to interpolate to in data.diagnostics);
338      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
339       diagnostic pointer.
340    o pkg/seaice: more cleaning up of seaice_growth, added many comments
341    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
342    o fix multi-category seaice:
343     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
344       SEAICE_MULTICATEGORY
345     - fix short wave heat flux
346    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
347       and allow to use EVP solver. Change forward lab_sea: test both EVP
348       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
349    o Initial check-in of lab_sea adjoint
350      (very similar to natl_box_adjoint/code_seaice)
351      * used C-grid and EVP solver
352      * used KPP, GM/Redi
353      * uses inAdExact=.TRUE.
354      * gradient checks fail for both ADM and TLM
355        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
356        f.d. gradients actually seem more problematic than ADM, TLM gradients;
357        issue is related to forward mismatch between g77 an ifort
358    o pkg/seaice: overhaul of thermodynamics
359     - growth.F and groatb.F are replaced by new routine seaice_growth.F
360     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
361     - move a few global fields out of SEAICE.h into seaice_growth.F and
362       make them 2D (FICE/QNETO/ ...)
363     - remove FO (it is the same as QNETO)
364     - introduce a few local fields to avoid modifying external fields such
365       as atemp, etc.
366    
367    checkpoint58s_post
368    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
369      changed exf_set_gen.F so that
370        genperiod=0 means input file is one time-constant field and
371        genperiod=-12 means input file contains 12 monthly means
372    o CG2D: use pre-computed solver main-diagonal (stored in common block);
373      this affects truncation error ; generate new output file for exp. which
374      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
375        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
376        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
377        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
378        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
379        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
380    o start implementation of deep-atmosphere and anelastic formulation
381    o verification: remove 2nd copy of input files and use script "prepare_run"
382      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
383    o mom_common/vecinv/fluxform: fix a few initialisation isssues
384    o profiles: fix for multithreaded case
385    
386    o diagnostics: rename few diags:
387      s/'PRESSURE'/'RCENTER '/g
388      s/'TICE    '/'oceFreez'/g
389      s/'TAUX    '/'oceTAUX '/g
390      s/'TAUY    '/'oceTAUY '/g
391      s/'SWFLUX  '/'oceQsw  '/g
392      s/DIFx/DFxE/g
393      s/DIFy/DFyE/g
394      and add few ocean-forcing diagnostics:
395      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
396    o modifications to pkg/seaice/growth.F and budget.F, which change results of
397      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
398      as actual snow thickness.  It now refers everywhere to effective snow
399      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
400    
401    checkpoint58r_post
402    o modifications to pkg/seaice/growth.F, which change results of
403      lab_sea experiment: fixes pertain to melting snow over open water, to
404      masking EVAP under sea ice, and to using the correct AREA variable for
405      computations of EVAP, PRECIP, HSNOW, and GHEFF
406    o add ability to read bathy, salt, and theta using MNC (off by def)
407    o add flooding algorithm and advection of HSNOW for pkg/seaice;
408      both are turned off by default and do no change any results
409    o seaice advection with pkg/thsice: a step toward the use of non-linear
410      advection scheme, but #ifdef or commented out for now (requires more EXCH).
411    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
412      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
413      in natl_box (affects results @ truncation level: update output.txt)
414    o multi-threading and IO:
415      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
416      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
417        (needed to work with SingleCpuIO): tested in all verif. exp.
418    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
419      affects the results (but none of the verification test uses this scheme).
420    o Adding some pkg/diagnostics capability to pkg/seaice
421      (will certainly be subject to changes)
422    o ctrl: adding new control variables:
423      lwflux, lwdown, evap, snowprecip, apressure, runoff
424    
425    checkpoint58q_post
426    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
427      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
428      high_res_cube configuration by 4% on Columbia.
429    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
430      add (in global_with_exf/code) a version of EXF_INTERP_READ without
431      dynamical allocation (seems to work in multi-threaded).
432    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
433      single CPU io) so that TAF does not have to see EESUPPORT.h
434    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
435    
436    checkpoint58p_post
437    o obcs: stop if obcs is used with useCDscheme = .true.
438    o shelfice:
439     - fix a sign error so that no slip at shelfice interface works
440     - remove stop for combination non-hydrostatic code and shelfice. That does
441       not mean, that the results are correct, but at least they are numerically
442       stable
443    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
444    o added adjoint exch routined for all exch*3d* routines
445      and updated flow directives
446    
447    checkpoint58o_post
448    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
449      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
450    o change controling S/R for writing pickup file (new S/R do_write_pickup)
451      and clean-up reading/writing of pickup files.
452    o fix local version of read/write pickup (NH part) in rotating_tank/code
453    o simplify EXCH interface:
454     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
455     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
456    o added the regrid package
457    o shelfice:
458     - add a simple boundary layer scheme to reduce noise
459     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
460    
461    checkpoint58n_post
462    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
463       local variable (not in common block).
464    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
465      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
466      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
467        to work with SingleCpuIO.
468    o add "_d 0" to real constant of pkg/cfc subroutines ;
469       update exp. cfc_exemple & tutorial_cfc_offline output files.
470    o multi-threading and IO:
471      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
472        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
473      - barrier before and after reading.
474      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
475      - avoid using MDS_WRITELOCAL for LAND pkg output.
476      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
477        common-block variables ; Allows multi-threading with master-thread IO.
478    o change default MAX_NO_THREADS from 32 to 4 ;
479      and stop cleanly when MAX_NO_THREADS is too small.
480    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
481    
482    checkpoint58m_post
483    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
484       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
485    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
486       keep global_ocean.90x40x15 (for AD testing) with former secondary test
487       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
488    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
489        add MITgcm_tutorials (= code + all the tutorials)
490    o ecco, option to compute cost for total ssh (mean+anom)
491    o consistent with addition of ptracer and ssh in pkg/profiles
492    o profiles: adding ptracer and ssh
493    o testreport: change multi-test output-file name
494      (from output.txt.{name} to output.{name}.txt)
495    o profiles: now ok for mutli-tiles case
496    o seaice: add 4 parameters for different advection schemes for area,
497      (effective) seaice thickness, enthalphy, and snow height. Their default
498      is the standard parameter SEAICEadvScheme
499    o calc_gw:
500     - add cosFacU in zonal viscous flux (harmonic.visc.).
501     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
502       of tutorial_plume_on_slope.
503    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
504    o calc_gw: true flux-form, account for horizontal grid spacing.
505      update rotating_tank results, but not plume_on_slope (affected at
506      truncation level, 11 digits).
507    
508    checkpoint58l_post
509    o calc_gw:
510     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
511     - remove side-drag for now (need to fix it); update plume_on_slope results.
512     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
513    o commit code to make SST/SSS weights spatially variable
514      (based on either variable in-situ or variable initial T/S weights)
515    o pkg/ecco:
516      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
517        now based on horizontally varying weights wthetaLev, wsaltLev
518      * cost_averagesflags now returns year indices in addition to day, month
519      * sflux balance is performed on annual basis
520        (sflxumm, sfluxmm2, bal_sfluxmm)
521      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
522        including separate counting and multipliers
523    o pkg/rbcs
524      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
525    
526    checkpoint58k_post
527    o testreport:
528     - always build in dir. "build" (if not there, mkdir build instead of building
529       & running in input)
530     - run in dir run (if it exists), in build otherwise.
531     - call prepare_run (if input/prepare_run exists)
532     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
533    o pkg/exf modifications to interpolation and rotation routines for more
534       reasonable treatment of North Pole singularity: for tracers North Pole
535       value is set to northernmost zonal-mean value, for zonal velocity it is
536       set to zero, and for meridional velocity it is set to northernmost value.
537    o pkg/exf/exf_check_range.F
538     - add tile index to diagnostics and move stop statement to the very
539       end of the routine.
540    o pkg/diagnostics: (diagnostics_main_init.F)
541      define title of isomorphic variables according to the current config.
542    o pkg/thsice with pkg/seaice dynamics:
543    - fix domain of computation (interior only, required for exf) and do exchanges
544    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
545    o towards a standard way of dealing with multi-threading in MONITOR
546      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
547    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
548       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
549    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
550    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
551    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
552       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
553    o tracer advection:
554     - clean-up and simplify calc_common_factors.F
555     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
556       advection subroutine (but still not used within DST advection S/R)
557    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
558    
559    checkpoint58j_post
560    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
561      from file (collects calls previously in FORWARD_STEP)
562    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
563    o adjoint store dir. adjusted accordingly
564    o genmake2
565      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
566    
567    checkpoint58i_post
568    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
569      on wind stress (SEAICEstressFactor defaults to 1.)
570    o Total number of Timers is finite (<=40): comment out 2 non-essential one
571      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
572    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
573      on CS-grid: no longer loosing mass.
574    o exf & curvilinear-grid: no longer modify longitude xC & xG.
575    o pkg/ggl90: fix sloppy output and fix a bug
576    o pkg/seaice: added SEAICEuseEVPpickup parameter
577      - Set to false in order to start EVP solver with
578        non-EVP pickup files when using SEAICEuseEVP
579      - fix sign error in diffusion in seaice_calc_rhs
580    
581    checkpoint58h_post
582    * Modifications for bottom topography control
583      o replace hFacC by _hFacC at various places
584      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
585      o add non-self-adjoint cg2d_nsa
586      o update autodiff support routines
587      o re-initialise hfac after ctrl_depth_ini
588      o works for 5x5 box, doesnt work for global_ocean.90x40x15
589    * Adding verification for 5x5 box (4-layer) bottom topography control
590    
591    checkpoint58g_post
592    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
593       used for mean seasonal cycle, mean diurnal cycle); add an example
594       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
595    o pkg/ggl90:
596      - add parameter (minimum surface kinetic energy)
597      - fix bug (avoiding division by zero)
598    o couple pkg/thsice to pkg/seaice:
599      - modify advection in seaice to accomodate new scalar fields to be advected
600      - only muliDimAdection scheme work with seaice/thsice
601      - mapping of thsice-variables to seaice-variables, back and forth
602      - does not break the verification experiments, but does not give the
603        desired results either
604    o pkg/seaice
605      - make (default) second order advection a bit less confusing?
606    
607    checkpoint58f_post
608    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
609      to pkg/seaice):
610      - new routines thsice_map_exf and thsice_get_exf provide the interface
611      - add an additional formal parameter to thsice_solve4temp
612    o pkg/exf:
613      - add new fields wspeed, snowprecip (to be able to couple to thsice)
614      - correct Stefan-Boltzmann constant
615      - new parameter for longwave surface emittance
616      - separate some stuff from exf_bulkformulae into new routines  
617        exf_radiation, exf_wind
618      - add new parameters and constants: longwave emissivity for ocean, ice
619        and snow, evaporation parameters over ice
620      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
621        either wind from stress or stress from wind
622    o pkg/thSIce:
623    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
624    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
625       and THSICE_CALC_THICKN
626    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
627    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
628      to make debugging easier.
629    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
630    o pkg/bulk_force:
631      - clean-up comments and parameters ;
632      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
633    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
634      generate new output for test-experiment: aim.5l_cs.thSI
635    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
636      testreport accordingly
637    
638    checkpoint58e_post
639    o SEAICE_CGRID adjoint done
640    o R_STAR adjoint implemented.
641      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
642      * need to sort out init. of h0facc, etc.
643    o Make pkg/profile fully independent of ecco,cost, etc. stuff
644      to be able to use it in pure forward.
645    
646    checkpoint58d_post
647    o upgrade simple test-experiment to tutorial example:
648     step.1: duplicate the experiment and (step.2) will remove the old copy.
649      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
650      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
651      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
652      tutorial_global_oce_biogeo    <- copy of dic_example
653      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
654      tutorial_plume_on_slope       <- copy of plume_on_slope
655      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
656      tutorial_global_oce_optim     <- empty for now (David ?)
657      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
658     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
659    o correct a sign problem in cost_scat.F
660    o obcs and ptracers: fix boundary conditions for advections schemes
661      with larger stencil
662    o thsice adjoint: start
663    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
664      completeness
665    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
666      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
667    o ptracers adjoint:
668      * avoid extensive recomputatations
669      * fix missing re-init. of gptr (missed by TAF)
670    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
671      me to turn off the excessive output to STDOUT that this package produces
672    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
673      and add those terms in Vector-Invariant formulation.
674    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
675      if the control period (xx_hfluxperiod etc) is 0
676    o in profiles pkg, clean routines and fix details
677    o in ecco pkg, reading ssh data:
678      fix problem in case the model does not start at iter0=0
679    o fix mnc-pickup/restart for ptracers
680    o new package prifiles:
681      code to compute profile-based cost by Gael Forget
682      (modifs in ecco, ctrl, autodiff)
683    o Benign bug fix in initialization (spotted by M. Mazloff) of
684      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
685    
686    checkpoint58c_post
687    o adjoint: finish NLFS adjoint and provide reference output in
688      verification/global_ocean.90x40x15/results_ad_nlfs
689    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
690      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
691      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
692      with SEAICE_CGRID defined.
693    o move calendarDumps from "data" to "data.cal" and clean-up the code
694      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
695    o add useEXF & useCAL flags (for now, set in hard-coded way)
696    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
697      (were missing in NH mode, and wrong in quasihydrostatic mode).
698      waiting for Chris updated version of calc_gw to add those CALLs.
699    o fix bug in quasihydrostatic S/R ;
700      add a test for this option: global_ocean.90x40x15.qshyd
701    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
702      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
703    o add on/off flag useOffLine for package OFFLINE
704    o seaice:
705      - modify advection so that it works also on the C-grid
706      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
707        problem in multi-tile runs with C-grid
708      - add flags for clipping ice velocities and/or masking solver forcing
709      - fix drag (ocean on ice) formulation and a bug that caused noise in the
710        C-grid solver
711      - added a few comments to seaice_diffusion.F
712      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
713        are now exclusive)
714      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
715        required re-ordering the code a little:
716       + make DAIRN global variable (defined in SEAICE)
717       + move computation of the viscosities eta and zeta into a new separate
718         routine (because I need to recompute them in seaice_ocean_stress.F)
719    
720    checkpoint58b_post
721    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
722      update output.txt of exp. aim.5l_cs.thSI
723    o various mnc cleanups and improvements:
724      + shrink lookup tables by factor of ~4
725      + better error reporting when running out of lookup space
726      + able to handle longer path/file names (up to 500 chars)
727    o adjoint:
728      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
729      - TBD: "hidden" mom_vecinv recomp. in dynamics
730    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
731     (allow to differentiate between forcing components using new integer flags:
732      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
733     and add new flag to put Dissipation tendency out of Adams-Bashforth.
734    o ecco
735      - enable trend removal from SSH anomaly obs.
736    o adjoint
737      - a fix for PmEpR when #undef EXACT_CONSERV
738      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
739      - try to fix "hidden" recomp. in forward_step for NLFS
740        (NLFS seems broken sometimes after I checked it in)
741    o seaice:
742     - add c-grid version of the dynamic solver:
743       + three new routines that are the c-grid substitute lsr, dynsolver
744         and ostres
745       + put a few fields that were local to dynsolver into global common
746         blocks, so that I can move the computation of stresses etc into
747         seaice_lsr (saves coding but may break the adjoint).
748     - replace more hardwired parameters by runtime parameters
749     - add ice masks that mask the rhs of the implicit solvers where there
750       is no ice (commented out in seaice_dynsolver, because i am not sure
751       if this works properly), eventually this should replace the clipping
752       of ice velocities in seaice_dynsolver to +/-40cm/s.
753    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
754      include it only where its needed
755    o move balancing of fluxes before the call of external_forcing_surf
756    o seaice:
757      - correct units of turning angles (now they are really in degrees)
758      - move computation of GWATX/Y out of main routine into dynsolver
759      - initialize GWATX/Y in seaice_init
760    o Apply mask on Fresh-Water flux (needed for SSH forcing).
761      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
762    o seaice: add runtime flags for turning angles (default to zero)
763    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
764      and trend from exf forcing and ctrl control adjustments
765    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
766      (since checkpoint57x_post)
767    o change the default rotation period to 86164.s = the Earth rotation
768    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
769      and based on a reference stratification. Tested within hs94.cs-32x32x5.
770    o seaice advection: add code for choosing between the default (2nd order
771      central differences) and multiDim advection schemes provided by
772      pkg/generic_advdiff
773    o seaice:
774      - removed all references to SEAICE_GRID.h fields from
775        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
776        (cubed-sphere configuration will change a little)
777      - grid computations in seaice_init are obsolete now.
778      - cleaned up code a little so that is easier to read (hopefully).
779      - added new (better?) discretizations of default advection and diffusion
780        (turn on with SEAICEuseFluxForm)
781      - replace 1 in 3d global fields by kSurface in growth.F
782      
783    checkpoint58a_post
784    o seaice:
785      - bug fix in advect.F
786    o shelfice:
787      - separate shelfice load anomaly from pload (breaks with time
788        dependent forcing), => introduce constant field shelficeLoadAnomaly.
789        Its default is 0., but it may be computed more cleverly from (unknown)
790        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
791        done offline. A good approximation of the pressure load anomaly is
792        necessary to avoid large initial adjustment processes underneath
793        deep-reaching shelfice.
794      - small fix in ISOMIP shelfice_thermodynamics
795      - add more sophisticated thermodynamics of Hellmer (1989), this is
796        now the default
797      - give a few constants more intuitive names
798    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
799      if bulk formulae are used in long integration (especially EmPmR). Turn
800      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
801      if balancePrintMean, the imbalance that is substracted is printed to
802      STDOUT.
803    o fix bug (typo) in obcs_apply_eta.F
804    o add a new package shelfice which enables us to model the circulation
805      underneath shelf-ice with draughts of hundreds of meters.
806     - works
807     - to do: + include improved thermodynamics
808              + check whether kSurfC (from model/inc/SURFACE.h) can be used
809                instead of new field kTopC
810              + can we use topoFile, Ro_surf and existing code in ini_depth.F
811                instead of new field R_shelfIce and new code in ini_depth.F
812                and ini_mask_etc.F?
813              + adjust vertical mixing schemes?
814    o seaice pkg:
815     - add a cpp-flag to include a simple formula for a salinity dependent
816       freezing point of sea water at the surface
817     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
818       meridional stresses are now different (and hopefully correct)
819    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
820       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
821       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
822    o pkg/diagnostics: add options and parameters for regional-statistics
823       diagnostics ; define regions by reading a region-mask from a file
824       (might add other options later)
825    o pkg/bulk_force:
826     - add option and parameters to use AIM surface-flux formulae.
827     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
828       others forcing fields (defined in PARM05, parameter file "data") are loaded
829       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
830     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
831     - use the right EXCH call for uwind,vwind (to work on CS-grid).
832     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
833       and parameters (note: calcWindStress replaces .NOT.readwindstress).
834     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
835    
836    checkpoint58
837    o add "--embed-source" option to genmake2 which, when the supporting
838      tools can be compiled (as determined by genmake2) will turn on the
839      embed_files package which then embeds the entire MITgcm source code
840      (*.[fFhc] + Makefile) used for the build within the executable
841      - requested by CNH but off by default
842      - adds a paltry <9MB to the mitgcmuv executable in most cases
843      - only writes the output when useEMBEDSRC in eedata is true
844    o clean up 3-dim. relaxation codes:
845      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
846      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
847      * Thanks to Tom Haine for testing!
848    
849    checkpoint57z_post
850    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
851      affects output (@ truncation level) of exp. plume_on_slope ; updated.
852    o fix the pickup behavior for obcs in combination with ptracers
853    o fix a bug in ptracers_external_fields_load
854    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
855      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
856    o transfered surface NH pressure to eta field (if exactConserv).
857    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
858         and update lab_sea output.txt file.
859    o completing 3-dim. relaxation code: additional term
860         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
861      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
862      * At compile time, in "EXF_OPTIONS.h" set
863          #define  ALLOW_CLIMTEMP_RELAXATION
864          #define  ALLOW_CLIMSALT_RELAXATION
865      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
866          tauThetaClimRelax3Dim = 15552000.0,
867          tauSaltClimRelax3Dim  = 15552000.0,
868      * 3 cases:
869          1) Use a constant-in-time 3-dim. field
870          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
871          3) Real-time relax. to time-evolving prescribed field
872    o Adding Laplacian-type smoothness constraint on
873      initial and boundary (forcing) controls (ic, bc)
874      * enable at compile-time via
875        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
876      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
877      * Absolute scale somewhat unclear so far
878      * no area weighting was included since no other cost term does so far
879    
880    checkpoint57y_post
881    First step for a NLFS adjoint
882    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
883    o new init. routines for calc_r_star, calc_surf_dr
884    o still need to deal with ini_masks_etc
885    o testreport seemed happy
886    checkpoint57y_pre
887    
888    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
889    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
890    o add new offset feature to offline pkg (plus minor cleanup)
891    o cfc fixes for final year of integration
892    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
893      be in GCHEM_OPTIONS).
894    
895    checkpoint57x_post
896    o fix testreport Pb in multiple test experiment.
897    o cleanup our namelist syntax in verification:
898      - make it more F95 standards compliant (some work still needed)
899      - allows the vast majority of our tests to work with gfortran
900    o Non-Hydrostatic:
901     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
902     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
903    o Allow to apply AB on T,S rather than on AB(gT,gS):
904     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
905     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
906       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
907     - need a "clever" read_pickup to restart from the other AB formulation
908    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
909    o remove some unused variables (reduces number of compiler warnings)
910    o adjoint
911      * Disable useVariableViscosity for adjoint for time being
912        (there are a number of extensive recomputations)
913      * Initialize certain variables needed for adjoint
914    
915    checkpoint57w_post
916    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
917                 fix the singleCpuIO RS version of MDSWRITEFIELD
918       and add a WARNING if using globalFiles=T with multi-processors.
919    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
920      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
921    o tracer advection scheme:
922      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
923       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
924       was not very convenient).
925      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
926       (further tests needed for the implicit DST & Flux-Limiter schemes).
927    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
928      and sRef for convenience, handy, when you want to initialize
929      ptracers in a large domain with a constant non-zero value. Also,
930      untangle ptracers_init.F a little.
931    
932    checkpoint57v_post
933    o change dome exp. to use variable viscosity in side-drag terms.
934    o remove all the files from the cfc_offline test since they are now
935      incorporated into tutorial_cfc_offline which has been producing
936      identical results for a few days of testing
937    o add new parameter: sideDragFactor to enable half-slip-side BC
938      and change side-drag S/R to use viscosity from mom_calc_visc
939      (can switch back by setting sideDragFactor=0.); affects results at
940      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
941       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
942    o vorticity & strain are now computed without masking, to account for
943      no-slip-side BC in variable viscosity calculation ; mask is applied
944      anyway later on, before computing advection/coriolis terms.
945    o modify exp4 to test new obcs support for reading from external files
946      and for passive tracers
947    o fix behavior of ptracers_monitor when monitor output is written to a
948      netcdf-file; still not independent of monitor.F (writes in the same
949      file).
950    o change default value of tRef (put a uniform, meaningful value for ocean
951      & atmos) and initialize sRef (was missing, as Martin mentioned).
952    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
953      to be proportional to enstrophy dissipation length.  Thus,
954       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
955      This is now consistent with Smagorinsky and with the manual.
956    
957    checkpoint57u_post
958    o OBCS and PTRACERS: add open boundary support for passive tracers
959      - either use homogenous (pseudo) v.Neumann conditions or prescribe
960        OB-values from file; this is not different from the way theta and salinity
961        are treated
962      - however, Orlanski-radiation conditions are not supported, and the model
963        will stop if you use pTracers and Orlanski at the same time.
964      - beefed up the rountine obcs_external_fields_load: now only those open
965        boundary values are overwritten with values from files for which there
966        are really files, otherwise the OB-fields remain untouched. This makes
967        it possible to use different OBs at different ends of the domain (as
968        with EXF)
969    o reduce number of exch calls in shap_filt (s2).
970    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
971      truncation level) 4/5 MLAdjust test results (11&12 digits match).
972    
973    checkpoint57t_post
974    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
975    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
976      same truncation, independent of the face number: affects affects several
977      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
978    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
979      note that biharmonic viscosity + no-slip was not tested in any experiment.
980    o fix bug in non-linear free-surf side-drag ; generate new output for
981      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
982    o make mnc honor the writeBinaryPrec flag for most kinds of output
983    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
984    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
985      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
986    o add brackets in multi-terms sum to get same truncation, independent of
987      the face number (manage to get exactly same value of gU,gV at the cs-edge)
988      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
989    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
990      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
991      a maximum grid-scale Reynolds number.  Also, changes all length calculations
992      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
993      Suggested values of viscosity parameters found in mom_calc_visc.
994      Many new viscosity diagnostics available.
995    
996    checkpoint57s_post
997    o Add clearing-house for viscosity calculations, mom_calc_visc and
998      correct numerous bugs in LeithD and Smagorinsky discretizations.  
999      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1000      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1001      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1002      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1003      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1004      ViscAhStrain and viscAhTension are now retired.
1005    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1006    o In response to JMC's bug report, genmake2 now ignores any soft-links
1007      that it finds in the *current* directory when searching for files.
1008      Soft-links found in any other source directories will still work as
1009      they did before.
1010    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1011      a C routine to unlimit the stack size
1012    o mnc-ify pkg/aim snapshot vars
1013    o mnc-ify pkg/land as requested by Daniel
1014    o various changes to mnc including:
1015      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1016      - output can now be grouped so that all files within a group
1017          change the ITER portion of their names in lock-step together
1018      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1019          and works with both EXCH1 and EXCH2 (but needs more testing)
1020      - writing works for all verification test cases w/ g77 on Linux
1021    
1022    checkpoint57r_post
1023    o make MNC variable initialization happen earlier
1024    o add diagnostics for (almost) each term of the momentum Eq.
1025    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1026    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1027    o remove MINIMAL_TAVE_OUTPUT option ;
1028      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1029    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1030      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1031    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1032    o add time-dependent SST, SSS control
1033    o cost terms in ecco/ modularized (new cost_generic.F)
1034    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1035    o new infrastructure for seaice model vs. obs misfits in seaice/
1036      * driver from the_main_loop.F is seaice_cost_driver.F
1037      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1038      * gradient check in Exp. 6a of natl_box_adjoint/
1039    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1040      (see README file)
1041    
1042    checkpoint57q_post
1043    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1044    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1045      - bug was reported by Jean-Michel and Ian Fenty
1046    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1047      update exp. cpl_aim+ocn output.
1048    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1049      Needed for high-res. runs with large global files
1050      to be able to limit tapelev size
1051    o Changed some tests for adjoint:
1052      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1053      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1054      * global_ocean.90x40x15/ back to default 3-level checkpointing
1055    o Modifications to enable scripted COMMON to MODULE conversion
1056      * verification/OpenAD/code/ has necessary scripts and description;
1057      * converts, compiles and runs successfully;
1058    
1059    checkpoint57p_post
1060    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1061    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1062      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1063    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1064    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1065      (was already the case for dissipation with mom_vecinv,
1066       and also the case for grad.PhiHyd when staggered-timeStep)
1067      This will allow to put dissipation out-off the AB time-stepping.
1068     Unfortunately, affects truncation error. Update output of exp. that "fails"
1069      (cg2d matching number) and leave the others for later: front_relax(10),
1070      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1071      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1072    
1073    checkpoint57o_post
1074    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1075      (2) its ready to be documented during the 20050801 DocFest
1076    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1077      for ideal_2D_oce and lab_sea on linux_ia32_g77
1078    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1079      in global1x1_tot/code_seaice_adj to access indices 32, 33
1080      (worth another tag)
1081    
1082    checkpoint57n_post
1083    o adding precip control xx_precip 32
1084    o adding swflux control xx_swflux 33
1085    o Replacing 10 forcing penalty cost routines by 1 generic.
1086    o Implementing partitioning in time-mean and variable adjustment
1087      for atmos. state.
1088    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1089  o in natl_box_adjoint:  o in natl_box_adjoint:
1090    * updated: results_bulk/    * updated exp 1 to 10
1091    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1092    o updated global1x1/*_seaice_adj/
1093      to incorporate latest changes
1094    o enable useSingleCpuIO for mdsio vector routines
1095      (applies in particular to tapelev I/O)
1096    o removed inefficient K-loop in all active_file*control*.F
1097    
1098  checkpoint57m_post  checkpoint57m_post
1099  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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