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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.853 by jmc, Wed Jul 25 21:23:29 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
8      for B-grid vector (not yet tested) and C-grid vector (<- only used
9      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
10    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
11      (#ifdef ALLOW_SALT_PLUME)
12    o gather_2d/scatter_2d: removed halo regions
13    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
14      scheme and the corresponding test case (under front_relax dir). For now,
15      only available with Skew-flux form and not yet tested in realistic set-up.
16      adjoint: store directives updated, but gradient checks deteriorated,
17      so maybe GM/Redi adjoint is now broken.
18    o seaice adjoint
19      * add AREA, HEFF, HSNOW as control variable
20        (should not change lab_sea results)
21      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
22    o pkg/seaice:
23      * added computation of saltFlux in seaice_growth;
24        For time being, sea ice salinity is assumed constant
25        contribution of snow flooding to freshening of sea ice is neglected.
26        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
27        defaults to 0.0 in order to maintain backward compatibility.
28        Typical values for SEAICE_salinity are 4 to 10 g/kg.
29      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
30      * added SEAICE_availHeatFrac, which specifies fraction of surface level
31        heat content used to melt or grow ice
32      * commented out cap of HICE: it helps keep ice thinner
33      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
34      * applied OBCS T/S mask to HEFFM sea ice mask
35    
36    checkpoint59d
37    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
38     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
39     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
40    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
41     and change default value of parameter "GM_Small_Number";
42     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
43       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
44       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
45    o pkg/ecco: cost function when applying pkg/smooth to controls
46    o pkg/ctrl: add forcingPrecond run time parameter
47    o pkg/seaice:
48     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
49     - fix bug in metric terms of u-equation in LSR solver (implicit part),
50       changes verification/lab_sea
51     - rearrange implicit part of u-equation in LSR solver to make it easier to
52       read, understand, and debug. This causes changes at the truncation level.
53     - fix (serious) bug in the boundary conditions (sign error in the implicit
54       part) of the LSR solver. Changes all LSR results.
55     - fixed problem with HSNOW initialization to avoid thick snow when AREA
56       is initilized with small values - does not change lab_sea results.
57     - added HsnowFile initialization capability
58    o pkg/smooth: addition to model/src and pkg/ctrl so allow
59     initialization of pkg/smooth and application to control vector
60    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
61    o dependencies: pkg/profiles requires pkg/cal
62    o pkg/profiles:
63     - added option ALLOW_PROFILES_GENERICGRID
64         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
65         that interpolation information (grid points and coefficients) is provided
66         within the netcdf input files.
67         -> sample matlab scripts can be found in MITgcm_contrib/gael
68         that allow you to prepare netcdf input files.
69     - also modified: cleaner include statements, cleaner error print statements,
70       cleaner stops when error, and more tests of the netcdf input files consistency.
71    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
72    o pkg/seaice:
73     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
74       requires a new routine: seaice_diagnostics_fill.F
75     - make sure that seaice does not move if not forced (pressure replacement
76       method, Hibler and Ip, 1995), changes results
77     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
78     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
79       It is turned off by default (=-1.), because it changes the results.
80     - make it possible to read AREA from a file, too.
81    
82    checkpoint59c
83    o add S/R and diagnostics for oceanic mixed-layer depth
84    o move GMRedi call after all vertical mixing schemes (including KPP)
85    o pkg/thsice:
86     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
87      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
88    o pkg/obcs:
89     - bug fix for balance code
90    o pkg/seaice:
91      - allow values of SEAICE_elasticParm > 1
92      - add new parameter SEAICE_evpTauRelax as an alternative
93        to SEAICE_elasticParm
94      - make lsr boundary conditions free slip (by default), changes result
95      - add code for no slip boundary conditions for lsr
96      - set minimum of zeta to zero (and not 4e8) (changes results)
97      - add a cap on AREA after advecting AREA if seaice_growth is not called
98    o change calculation of Visbeck K:
99      - no longer depend on tapering scheme; instead, compute slope (limited
100        by GM_maxSlope). this is equivalent to what was comuted before with
101        clipping or linear tappering.
102      - fix vertical averaging (wrong by 1/2 level)
103      - leave the old version (but will not be maintained) within
104        #ifdef OLD_VISBECK_CALC / #endif
105      - update output of exp. ideal_2D_oce
106    o change error catch in calc_r_star to improve vectorization
107    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
108      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
109    o adjoint:
110      Re-organized adjoint checkpointing according to Matt Mazloff
111      (but with modifs/completions/cleanups)
112      Storing is now bundled into large arrays to optimized I/O
113      (and second step in cleanup of the_main_loop)
114    
115    checkpoint59b
116    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
117      - export/import (between ocean & coupler) fields needed for ocean DIC.
118    o pkg/seaice:
119      - get rid of three more exchanges seaice_calc_viscosities (required
120        different loop boundaries in seaice_lsr and seaice_ocean_stress)
121      - bug fix in seaice_ocean_stress (update of lab_sea required)
122      - reduce loop boundaries to necessary minimum also in seaice_evp
123      - go back to the old way of computing deltaC/Z as the adjoint likes that
124        better
125    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
126      passive tracer to an Age Tracer) + update output.txt
127    o pkg/exf:
128      - implement A-grid / C-grid selection for wind-stress input files.
129      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
130      for now, in exf_bulk_largeyeager04.F only :
131      - change implementation for case where windspeed + 2. components wind-stress
132        are read-in. AND use rhoConstFresh to convert evap.
133    o pkg/seaice:
134      - use correct EXCH_UV for wind-forcing (on A-grid).
135      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
136        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
137    o pkg/exf:
138      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
139      EXF_INTERPOLATION:
140      - merge global_with_exf/code version of exf_interp_read.F
141        to the main code ;
142      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
143        reading the file ; Important: This options needs to be defined to recover
144        previous code.
145        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
146      - no longer loose real*8 precision along the way when using exf_iprec=64.
147    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
148      - change discretisation of evp-solver in order to avoid another exchange
149        (changes lab_sea) and clean up a little
150      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
151        help the adjoint (this also changes the results slightly)
152      - add a few "_d 0" where they had been missing in seaice_evp.F
153      - cleaning up: remove unused seaice_calc_rhs.F
154    o pkg/exf: some cleaning-up:
155      - change various "constants" into runtime parameters
156      - cleaned-up Large&Yeager04 routine which should eventually
157        replace exf_bulkformulae.F (changed names of S/R and CPP)
158        and merged various ALLOW_ATM_WIND options
159     only used with thsice pkg (in thsice_get_exf.F):
160      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
161        which are used when useStabilityFct_overIce=TRUE (= the default)
162      - change default values of ice & snow emissivity and scale downward LW
163        by ice & snow emissivity.
164    o pkg/thsice:
165     fix few little problems, in thsice_calc_thickn.F:
166      - growth vertically (and not laterally) if iceFrac == iceMaskMax
167      - melt only laterally if hIce < hThinIce (as the comments say)
168      and in thsice_extend.F:
169      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
170      - start to form ice as soon as the minimum ice-volume is reachable.
171     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
172      and cpl_aim+ocn
173    o pkg/kpp
174     - move computation of surface related input fields to KPP into a new
175       subroutine kpp_forcing_surf.F
176     - remove wrong (within bi,bj loops) EXCH calls.
177     - little cleaning (add argument myThid in last position, cvs header ...)
178     - for now, fix conservation problem by exchanging KPPviscAz (may not
179       be the best fix)
180    o pkg/seaice
181     - check for inconsistent evp parameter/cpp-flag combination
182     - remove leftover errIO flat for obsolete name list error handling
183    o OpenAD
184     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
185    
186    checkpoint59a
187    o pkg/seaice: some parameter clarifications and a little bit of clean up
188    o pkg/thsice: rename run-time parameters:
189       himin       -> hIceMin
190       himin0      -> hThinIce
191       hihig       -> hThickIce
192       i0          -> i0swFrac
193       transCoef   -> bMeltCoef
194       frac_energy -> fracMelting
195      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
196       with default values (for now) that do not change the results.
197      remove old version of thsice vars advection in pkg/seaice.
198    o in FFIELDS.h:
199      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
200      - make pLoad & sIceLoad always available (but still only used if
201         ATMOSPHERIC_LOADING is #define).
202    o pkg/kpp: replaced _KPP_RL with _RL
203    o bug fixes for vertical diffusivity computations when both KPP and
204        3D diffusivity arrays are used.
205    o pkg/seaice: fix bug in evp solver, while doing that
206      - change (improve?) discretization of stress computations for both
207        cgrid-lsr and evp solver
208      - add a new routine to compute strain rates
209      - the above changes lab_sea results
210      - add no slip conditions for evp solver (off by default), lsr-version
211        may follow
212      - fix exchange for shear at Z-points (does not change lab_sea)
213      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
214        (to force the user to pick a time step since there is not "safe" way
215        of choosing it)
216      - add principal stress diagnostics
217      - rearrange fields for evp a little to avoid having to call a: too many
218        exchanges and b: exchanges for stress trensor components which we do
219        not have.
220      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
221        of evp, complete rewrite for lsr case (latter is does not yet work
222        in all cases)
223    o pkg/kpp: add code to have mixing in shelf ice caverns
224      - add myThid to all kpp routines (long overdue)
225    
226    checkpoint59
227    o pkg/exf:
228      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
229        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
230      - move exf header files from lower_case.h to UPPER_CASE.h ;
231        add missing cvs Header & Name
232      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
233      - add namelist param. selectStressGridPosition, exf_monFreq
234      - retire many _CLIM routines, and remove data.exf_clim
235        + params moved to data.exf
236        + climsst, climsss now handled by exf_set_gen, i.e.
237          climss?period=0 refers to constant field,
238          climss?period=-12 to monthly forcing
239      - split up namelists in data.exf
240    o pkg/seaice:
241      - remove seaice_exch and seaice_exch_uv
242      - remove superfluous exchange of theta
243      - add myThid to seaice_budget_ocean/ice
244      - add new interface for atmospheric wind forcing (C-grid only)
245        + new routine
246        + two new field (taux, tauy for stress over ice)
247        + removed one global field (DAIRN) for C-grid case only
248    o pkg/thsise
249      - 2nd set of modifs for thsice adjoint in conjunction with exf
250    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
251    
252    checkpoint58y_post
253    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
254      vertical diffusivity, similar to that in MOM4; turned on using
255      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
256      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
257    o Added capability for 3D specification of background vertical diffusion
258      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
259      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
260      "data" file that contains the 3D vertical diffusivity coefficients.
261    o ice dynamics (pkg/seaice) with thsice thermodynamics:
262      - add code within pkg thsice to advect & diffuse sea-ice fields
263      similar to (and will replace) what has been added in  seaice_advdiff.F,
264      but: - conserving Mass, Heat & Salt.
265           - better when using non-linear advection scheme (not yet fully tested)
266           - can also be used in atmospheric set-up (for now, only the diffusion).
267    
268    checkpoint58x_post
269    o IO option for global-file compact format:
270      - add options when generating topology (utils/exch2/matlab-topology-generator)
271      - add I/O capability (pkg/mdsio).
272      - adapt utils/matlab/rdmds.m to read this format.
273      for now long-line format not yet supported by pkg/mdsio (& exch2).
274    o shelfice: add a few diagnostics
275    
276    checkpoint58w_post
277    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
278      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
279      (and replace horiVertRatio in NH code).
280      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
281                         and tutorial_plume_on_slope (sensitive to truncation)
282    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
283      directly to drive seaice model (C-grid only)
284    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
285     - reintroduce computation of wind from stress,
286     - compute tau (in exf_bulkformulae.F) from windstress averaged to
287       mass points to avoid tau = 0
288     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
289    o rdmnc.m: make it work with "global" files created with gluemnc
290    o rdmnc.m : some improvements in dealing with singleton dimension
291      (tested on all testreport mnc output files).
292    o genmake2: disable pkg/profiles if netcdf test fails.
293    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
294    o move call to cal_readparms up to make calendar parameters/variable available
295      to all packages
296    
297    checkpoint58v_post
298    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
299      useDynP_inEos_Zc tested.
300    o pkg/exf: changes to properly interpolate/mask/scale initial fields
301    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
302      and portions thereof.  See read_cs.txt for description and examples.
303    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
304      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
305      following the great-circle arc between those 2 points.
306    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
307      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
308    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
309     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
310     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
311     - still needs work (not working with some options ; efficiency to improve)
312       and serious testing.
313     - use this scheme for temperature & salinity in 2 advection test exp.:
314       advect_xy & advect_xz, respectively.
315    
316    checkpoint58u_post
317    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
318    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
319    o testreport: add option "-skipdir" to skip some test.
320    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
321      momentum calculation.
322    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
323    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
324      remove checkpoint.F and the_correction_step.F (no longer used);
325      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
326    o add option (linFSConserveTr) to correct for tracer source/sink due to
327      Linear Free surface
328    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
329    o pkg/thsice: fix reading mnc-pickups
330    
331    checkpoint58t_post
332    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
333    o pkg/mdsio:
334     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
335       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
336       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
337     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
338     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
339       either MDS_READ_FIELD or MDS_WRITE_FIELD )
340     - new S/R (to replace MDSWRITEMETA), which allows to write more
341       informations (variable names, time ...) to meta files.
342     - modify rdmds.m to give back the meta file content.
343    o pkg/diagnostics: change vertical interpolation to be safer, and more
344       flexible (define p-levels to interpolate to in data.diagnostics);
345      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
346       diagnostic pointer.
347    o pkg/seaice: more cleaning up of seaice_growth, added many comments
348    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
349    o fix multi-category seaice:
350     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
351       SEAICE_MULTICATEGORY
352     - fix short wave heat flux
353    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
354       and allow to use EVP solver. Change forward lab_sea: test both EVP
355       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
356    o Initial check-in of lab_sea adjoint
357      (very similar to natl_box_adjoint/code_seaice)
358      * used C-grid and EVP solver
359      * used KPP, GM/Redi
360      * uses inAdExact=.TRUE.
361      * gradient checks fail for both ADM and TLM
362        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
363        f.d. gradients actually seem more problematic than ADM, TLM gradients;
364        issue is related to forward mismatch between g77 an ifort
365    o pkg/seaice: overhaul of thermodynamics
366     - growth.F and groatb.F are replaced by new routine seaice_growth.F
367     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
368     - move a few global fields out of SEAICE.h into seaice_growth.F and
369       make them 2D (FICE/QNETO/ ...)
370     - remove FO (it is the same as QNETO)
371     - introduce a few local fields to avoid modifying external fields such
372       as atemp, etc.
373    
374    checkpoint58s_post
375    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
376      changed exf_set_gen.F so that
377        genperiod=0 means input file is one time-constant field and
378        genperiod=-12 means input file contains 12 monthly means
379    o CG2D: use pre-computed solver main-diagonal (stored in common block);
380      this affects truncation error ; generate new output file for exp. which
381      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
382        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
383        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
384        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
385        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
386        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
387    o start implementation of deep-atmosphere and anelastic formulation
388    o verification: remove 2nd copy of input files and use script "prepare_run"
389      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
390    o mom_common/vecinv/fluxform: fix a few initialisation isssues
391    o profiles: fix for multithreaded case
392    
393    o diagnostics: rename few diags:
394      s/'PRESSURE'/'RCENTER '/g
395      s/'TICE    '/'oceFreez'/g
396      s/'TAUX    '/'oceTAUX '/g
397      s/'TAUY    '/'oceTAUY '/g
398      s/'SWFLUX  '/'oceQsw  '/g
399      s/DIFx/DFxE/g
400      s/DIFy/DFyE/g
401      and add few ocean-forcing diagnostics:
402      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
403    o modifications to pkg/seaice/growth.F and budget.F, which change results of
404      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
405      as actual snow thickness.  It now refers everywhere to effective snow
406      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
407    
408    checkpoint58r_post
409    o modifications to pkg/seaice/growth.F, which change results of
410      lab_sea experiment: fixes pertain to melting snow over open water, to
411      masking EVAP under sea ice, and to using the correct AREA variable for
412      computations of EVAP, PRECIP, HSNOW, and GHEFF
413    o add ability to read bathy, salt, and theta using MNC (off by def)
414    o add flooding algorithm and advection of HSNOW for pkg/seaice;
415      both are turned off by default and do no change any results
416    o seaice advection with pkg/thsice: a step toward the use of non-linear
417      advection scheme, but #ifdef or commented out for now (requires more EXCH).
418    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
419      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
420      in natl_box (affects results @ truncation level: update output.txt)
421    o multi-threading and IO:
422      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
423      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
424        (needed to work with SingleCpuIO): tested in all verif. exp.
425    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
426      affects the results (but none of the verification test uses this scheme).
427    o Adding some pkg/diagnostics capability to pkg/seaice
428      (will certainly be subject to changes)
429    o ctrl: adding new control variables:
430      lwflux, lwdown, evap, snowprecip, apressure, runoff
431    
432    checkpoint58q_post
433    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
434      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
435      high_res_cube configuration by 4% on Columbia.
436    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
437      add (in global_with_exf/code) a version of EXF_INTERP_READ without
438      dynamical allocation (seems to work in multi-threaded).
439    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
440      single CPU io) so that TAF does not have to see EESUPPORT.h
441    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
442    
443    checkpoint58p_post
444    o obcs: stop if obcs is used with useCDscheme = .true.
445    o shelfice:
446     - fix a sign error so that no slip at shelfice interface works
447     - remove stop for combination non-hydrostatic code and shelfice. That does
448       not mean, that the results are correct, but at least they are numerically
449       stable
450    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
451    o added adjoint exch routined for all exch*3d* routines
452      and updated flow directives
453    
454    checkpoint58o_post
455    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
456      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
457    o change controling S/R for writing pickup file (new S/R do_write_pickup)
458      and clean-up reading/writing of pickup files.
459    o fix local version of read/write pickup (NH part) in rotating_tank/code
460    o simplify EXCH interface:
461     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
462     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
463    o added the regrid package
464    o shelfice:
465     - add a simple boundary layer scheme to reduce noise
466     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
467    
468    checkpoint58n_post
469    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
470       local variable (not in common block).
471    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
472      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
473      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
474        to work with SingleCpuIO.
475    o add "_d 0" to real constant of pkg/cfc subroutines ;
476       update exp. cfc_exemple & tutorial_cfc_offline output files.
477    o multi-threading and IO:
478      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
479        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
480      - barrier before and after reading.
481      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
482      - avoid using MDS_WRITELOCAL for LAND pkg output.
483      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
484        common-block variables ; Allows multi-threading with master-thread IO.
485    o change default MAX_NO_THREADS from 32 to 4 ;
486      and stop cleanly when MAX_NO_THREADS is too small.
487    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
488    
489    checkpoint58m_post
490    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
491       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
492    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
493       keep global_ocean.90x40x15 (for AD testing) with former secondary test
494       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
495    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
496        add MITgcm_tutorials (= code + all the tutorials)
497    o ecco, option to compute cost for total ssh (mean+anom)
498    o consistent with addition of ptracer and ssh in pkg/profiles
499    o profiles: adding ptracer and ssh
500    o testreport: change multi-test output-file name
501      (from output.txt.{name} to output.{name}.txt)
502    o profiles: now ok for mutli-tiles case
503    o seaice: add 4 parameters for different advection schemes for area,
504      (effective) seaice thickness, enthalphy, and snow height. Their default
505      is the standard parameter SEAICEadvScheme
506    o calc_gw:
507     - add cosFacU in zonal viscous flux (harmonic.visc.).
508     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
509       of tutorial_plume_on_slope.
510    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
511    o calc_gw: true flux-form, account for horizontal grid spacing.
512      update rotating_tank results, but not plume_on_slope (affected at
513      truncation level, 11 digits).
514    
515    checkpoint58l_post
516    o calc_gw:
517     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
518     - remove side-drag for now (need to fix it); update plume_on_slope results.
519     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
520    o commit code to make SST/SSS weights spatially variable
521      (based on either variable in-situ or variable initial T/S weights)
522    o pkg/ecco:
523      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
524        now based on horizontally varying weights wthetaLev, wsaltLev
525      * cost_averagesflags now returns year indices in addition to day, month
526      * sflux balance is performed on annual basis
527        (sflxumm, sfluxmm2, bal_sfluxmm)
528      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
529        including separate counting and multipliers
530    o pkg/rbcs
531      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
532    
533    checkpoint58k_post
534    o testreport:
535     - always build in dir. "build" (if not there, mkdir build instead of building
536       & running in input)
537     - run in dir run (if it exists), in build otherwise.
538     - call prepare_run (if input/prepare_run exists)
539     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
540    o pkg/exf modifications to interpolation and rotation routines for more
541       reasonable treatment of North Pole singularity: for tracers North Pole
542       value is set to northernmost zonal-mean value, for zonal velocity it is
543       set to zero, and for meridional velocity it is set to northernmost value.
544    o pkg/exf/exf_check_range.F
545     - add tile index to diagnostics and move stop statement to the very
546       end of the routine.
547    o pkg/diagnostics: (diagnostics_main_init.F)
548      define title of isomorphic variables according to the current config.
549    o pkg/thsice with pkg/seaice dynamics:
550    - fix domain of computation (interior only, required for exf) and do exchanges
551    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
552    o towards a standard way of dealing with multi-threading in MONITOR
553      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
554    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
555       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
556    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
557    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
558    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
559       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
560    o tracer advection:
561     - clean-up and simplify calc_common_factors.F
562     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
563       advection subroutine (but still not used within DST advection S/R)
564    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
565    
566    checkpoint58j_post
567    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
568      from file (collects calls previously in FORWARD_STEP)
569    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
570    o adjoint store dir. adjusted accordingly
571    o genmake2
572      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
573    
574    checkpoint58i_post
575    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
576      on wind stress (SEAICEstressFactor defaults to 1.)
577    o Total number of Timers is finite (<=40): comment out 2 non-essential one
578      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
579    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
580      on CS-grid: no longer loosing mass.
581    o exf & curvilinear-grid: no longer modify longitude xC & xG.
582    o pkg/ggl90: fix sloppy output and fix a bug
583    o pkg/seaice: added SEAICEuseEVPpickup parameter
584      - Set to false in order to start EVP solver with
585        non-EVP pickup files when using SEAICEuseEVP
586      - fix sign error in diffusion in seaice_calc_rhs
587    
588    checkpoint58h_post
589    * Modifications for bottom topography control
590      o replace hFacC by _hFacC at various places
591      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
592      o add non-self-adjoint cg2d_nsa
593      o update autodiff support routines
594      o re-initialise hfac after ctrl_depth_ini
595      o works for 5x5 box, doesnt work for global_ocean.90x40x15
596    * Adding verification for 5x5 box (4-layer) bottom topography control
597    
598    checkpoint58g_post
599    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
600       used for mean seasonal cycle, mean diurnal cycle); add an example
601       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
602    o pkg/ggl90:
603      - add parameter (minimum surface kinetic energy)
604      - fix bug (avoiding division by zero)
605    o couple pkg/thsice to pkg/seaice:
606      - modify advection in seaice to accomodate new scalar fields to be advected
607      - only muliDimAdection scheme work with seaice/thsice
608      - mapping of thsice-variables to seaice-variables, back and forth
609      - does not break the verification experiments, but does not give the
610        desired results either
611    o pkg/seaice
612      - make (default) second order advection a bit less confusing?
613    
614    checkpoint58f_post
615    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
616      to pkg/seaice):
617      - new routines thsice_map_exf and thsice_get_exf provide the interface
618      - add an additional formal parameter to thsice_solve4temp
619    o pkg/exf:
620      - add new fields wspeed, snowprecip (to be able to couple to thsice)
621      - correct Stefan-Boltzmann constant
622      - new parameter for longwave surface emittance
623      - separate some stuff from exf_bulkformulae into new routines  
624        exf_radiation, exf_wind
625      - add new parameters and constants: longwave emissivity for ocean, ice
626        and snow, evaporation parameters over ice
627      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
628        either wind from stress or stress from wind
629    o pkg/thSIce:
630    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
631    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
632       and THSICE_CALC_THICKN
633    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
634    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
635      to make debugging easier.
636    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
637    o pkg/bulk_force:
638      - clean-up comments and parameters ;
639      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
640    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
641      generate new output for test-experiment: aim.5l_cs.thSI
642    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
643      testreport accordingly
644    
645    checkpoint58e_post
646    o SEAICE_CGRID adjoint done
647    o R_STAR adjoint implemented.
648      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
649      * need to sort out init. of h0facc, etc.
650    o Make pkg/profile fully independent of ecco,cost, etc. stuff
651      to be able to use it in pure forward.
652    
653    checkpoint58d_post
654    o upgrade simple test-experiment to tutorial example:
655     step.1: duplicate the experiment and (step.2) will remove the old copy.
656      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
657      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
658      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
659      tutorial_global_oce_biogeo    <- copy of dic_example
660      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
661      tutorial_plume_on_slope       <- copy of plume_on_slope
662      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
663      tutorial_global_oce_optim     <- empty for now (David ?)
664      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
665     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
666    o correct a sign problem in cost_scat.F
667    o obcs and ptracers: fix boundary conditions for advections schemes
668      with larger stencil
669    o thsice adjoint: start
670    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
671      completeness
672    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
673      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
674    o ptracers adjoint:
675      * avoid extensive recomputatations
676      * fix missing re-init. of gptr (missed by TAF)
677    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
678      me to turn off the excessive output to STDOUT that this package produces
679    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
680      and add those terms in Vector-Invariant formulation.
681    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
682      if the control period (xx_hfluxperiod etc) is 0
683    o in profiles pkg, clean routines and fix details
684    o in ecco pkg, reading ssh data:
685      fix problem in case the model does not start at iter0=0
686    o fix mnc-pickup/restart for ptracers
687    o new package prifiles:
688      code to compute profile-based cost by Gael Forget
689      (modifs in ecco, ctrl, autodiff)
690    o Benign bug fix in initialization (spotted by M. Mazloff) of
691      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
692    
693    checkpoint58c_post
694    o adjoint: finish NLFS adjoint and provide reference output in
695      verification/global_ocean.90x40x15/results_ad_nlfs
696    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
697      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
698      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
699      with SEAICE_CGRID defined.
700    o move calendarDumps from "data" to "data.cal" and clean-up the code
701      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
702    o add useEXF & useCAL flags (for now, set in hard-coded way)
703    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
704      (were missing in NH mode, and wrong in quasihydrostatic mode).
705      waiting for Chris updated version of calc_gw to add those CALLs.
706    o fix bug in quasihydrostatic S/R ;
707      add a test for this option: global_ocean.90x40x15.qshyd
708    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
709      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
710    o add on/off flag useOffLine for package OFFLINE
711    o seaice:
712      - modify advection so that it works also on the C-grid
713      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
714        problem in multi-tile runs with C-grid
715      - add flags for clipping ice velocities and/or masking solver forcing
716      - fix drag (ocean on ice) formulation and a bug that caused noise in the
717        C-grid solver
718      - added a few comments to seaice_diffusion.F
719      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
720        are now exclusive)
721      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
722        required re-ordering the code a little:
723       + make DAIRN global variable (defined in SEAICE)
724       + move computation of the viscosities eta and zeta into a new separate
725         routine (because I need to recompute them in seaice_ocean_stress.F)
726    
727    checkpoint58b_post
728    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
729      update output.txt of exp. aim.5l_cs.thSI
730    o various mnc cleanups and improvements:
731      + shrink lookup tables by factor of ~4
732      + better error reporting when running out of lookup space
733      + able to handle longer path/file names (up to 500 chars)
734    o adjoint:
735      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
736      - TBD: "hidden" mom_vecinv recomp. in dynamics
737    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
738     (allow to differentiate between forcing components using new integer flags:
739      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
740     and add new flag to put Dissipation tendency out of Adams-Bashforth.
741    o ecco
742      - enable trend removal from SSH anomaly obs.
743    o adjoint
744      - a fix for PmEpR when #undef EXACT_CONSERV
745      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
746      - try to fix "hidden" recomp. in forward_step for NLFS
747        (NLFS seems broken sometimes after I checked it in)
748    o seaice:
749     - add c-grid version of the dynamic solver:
750       + three new routines that are the c-grid substitute lsr, dynsolver
751         and ostres
752       + put a few fields that were local to dynsolver into global common
753         blocks, so that I can move the computation of stresses etc into
754         seaice_lsr (saves coding but may break the adjoint).
755     - replace more hardwired parameters by runtime parameters
756     - add ice masks that mask the rhs of the implicit solvers where there
757       is no ice (commented out in seaice_dynsolver, because i am not sure
758       if this works properly), eventually this should replace the clipping
759       of ice velocities in seaice_dynsolver to +/-40cm/s.
760    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
761      include it only where its needed
762    o move balancing of fluxes before the call of external_forcing_surf
763    o seaice:
764      - correct units of turning angles (now they are really in degrees)
765      - move computation of GWATX/Y out of main routine into dynsolver
766      - initialize GWATX/Y in seaice_init
767    o Apply mask on Fresh-Water flux (needed for SSH forcing).
768      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
769    o seaice: add runtime flags for turning angles (default to zero)
770    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
771      and trend from exf forcing and ctrl control adjustments
772    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
773      (since checkpoint57x_post)
774    o change the default rotation period to 86164.s = the Earth rotation
775    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
776      and based on a reference stratification. Tested within hs94.cs-32x32x5.
777    o seaice advection: add code for choosing between the default (2nd order
778      central differences) and multiDim advection schemes provided by
779      pkg/generic_advdiff
780    o seaice:
781      - removed all references to SEAICE_GRID.h fields from
782        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
783        (cubed-sphere configuration will change a little)
784      - grid computations in seaice_init are obsolete now.
785      - cleaned up code a little so that is easier to read (hopefully).
786      - added new (better?) discretizations of default advection and diffusion
787        (turn on with SEAICEuseFluxForm)
788      - replace 1 in 3d global fields by kSurface in growth.F
789      
790    checkpoint58a_post
791    o seaice:
792      - bug fix in advect.F
793    o shelfice:
794      - separate shelfice load anomaly from pload (breaks with time
795        dependent forcing), => introduce constant field shelficeLoadAnomaly.
796        Its default is 0., but it may be computed more cleverly from (unknown)
797        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
798        done offline. A good approximation of the pressure load anomaly is
799        necessary to avoid large initial adjustment processes underneath
800        deep-reaching shelfice.
801      - small fix in ISOMIP shelfice_thermodynamics
802      - add more sophisticated thermodynamics of Hellmer (1989), this is
803        now the default
804      - give a few constants more intuitive names
805    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
806      if bulk formulae are used in long integration (especially EmPmR). Turn
807      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
808      if balancePrintMean, the imbalance that is substracted is printed to
809      STDOUT.
810    o fix bug (typo) in obcs_apply_eta.F
811    o add a new package shelfice which enables us to model the circulation
812      underneath shelf-ice with draughts of hundreds of meters.
813     - works
814     - to do: + include improved thermodynamics
815              + check whether kSurfC (from model/inc/SURFACE.h) can be used
816                instead of new field kTopC
817              + can we use topoFile, Ro_surf and existing code in ini_depth.F
818                instead of new field R_shelfIce and new code in ini_depth.F
819                and ini_mask_etc.F?
820              + adjust vertical mixing schemes?
821    o seaice pkg:
822     - add a cpp-flag to include a simple formula for a salinity dependent
823       freezing point of sea water at the surface
824     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
825       meridional stresses are now different (and hopefully correct)
826    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
827       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
828       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
829    o pkg/diagnostics: add options and parameters for regional-statistics
830       diagnostics ; define regions by reading a region-mask from a file
831       (might add other options later)
832    o pkg/bulk_force:
833     - add option and parameters to use AIM surface-flux formulae.
834     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
835       others forcing fields (defined in PARM05, parameter file "data") are loaded
836       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
837     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
838     - use the right EXCH call for uwind,vwind (to work on CS-grid).
839     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
840       and parameters (note: calcWindStress replaces .NOT.readwindstress).
841     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
842    
843    checkpoint58
844    o add "--embed-source" option to genmake2 which, when the supporting
845      tools can be compiled (as determined by genmake2) will turn on the
846      embed_files package which then embeds the entire MITgcm source code
847      (*.[fFhc] + Makefile) used for the build within the executable
848      - requested by CNH but off by default
849      - adds a paltry <9MB to the mitgcmuv executable in most cases
850      - only writes the output when useEMBEDSRC in eedata is true
851    o clean up 3-dim. relaxation codes:
852      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
853      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
854      * Thanks to Tom Haine for testing!
855    
856    checkpoint57z_post
857    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
858      affects output (@ truncation level) of exp. plume_on_slope ; updated.
859    o fix the pickup behavior for obcs in combination with ptracers
860    o fix a bug in ptracers_external_fields_load
861    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
862      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
863    o transfered surface NH pressure to eta field (if exactConserv).
864    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
865         and update lab_sea output.txt file.
866    o completing 3-dim. relaxation code: additional term
867         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
868      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
869      * At compile time, in "EXF_OPTIONS.h" set
870          #define  ALLOW_CLIMTEMP_RELAXATION
871          #define  ALLOW_CLIMSALT_RELAXATION
872      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
873          tauThetaClimRelax3Dim = 15552000.0,
874          tauSaltClimRelax3Dim  = 15552000.0,
875      * 3 cases:
876          1) Use a constant-in-time 3-dim. field
877          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
878          3) Real-time relax. to time-evolving prescribed field
879    o Adding Laplacian-type smoothness constraint on
880      initial and boundary (forcing) controls (ic, bc)
881      * enable at compile-time via
882        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
883      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
884      * Absolute scale somewhat unclear so far
885      * no area weighting was included since no other cost term does so far
886    
887    checkpoint57y_post
888    First step for a NLFS adjoint
889    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
890    o new init. routines for calc_r_star, calc_surf_dr
891    o still need to deal with ini_masks_etc
892    o testreport seemed happy
893    checkpoint57y_pre
894    
895    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
896    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
897    o add new offset feature to offline pkg (plus minor cleanup)
898    o cfc fixes for final year of integration
899    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
900      be in GCHEM_OPTIONS).
901    
902    checkpoint57x_post
903    o fix testreport Pb in multiple test experiment.
904    o cleanup our namelist syntax in verification:
905      - make it more F95 standards compliant (some work still needed)
906      - allows the vast majority of our tests to work with gfortran
907    o Non-Hydrostatic:
908     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
909     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
910    o Allow to apply AB on T,S rather than on AB(gT,gS):
911     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
912     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
913       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
914     - need a "clever" read_pickup to restart from the other AB formulation
915    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
916    o remove some unused variables (reduces number of compiler warnings)
917    o adjoint
918      * Disable useVariableViscosity for adjoint for time being
919        (there are a number of extensive recomputations)
920      * Initialize certain variables needed for adjoint
921    
922    checkpoint57w_post
923    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
924                 fix the singleCpuIO RS version of MDSWRITEFIELD
925       and add a WARNING if using globalFiles=T with multi-processors.
926    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
927      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
928    o tracer advection scheme:
929      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
930       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
931       was not very convenient).
932      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
933       (further tests needed for the implicit DST & Flux-Limiter schemes).
934    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
935      and sRef for convenience, handy, when you want to initialize
936      ptracers in a large domain with a constant non-zero value. Also,
937      untangle ptracers_init.F a little.
938    
939    checkpoint57v_post
940    o change dome exp. to use variable viscosity in side-drag terms.
941    o remove all the files from the cfc_offline test since they are now
942      incorporated into tutorial_cfc_offline which has been producing
943      identical results for a few days of testing
944    o add new parameter: sideDragFactor to enable half-slip-side BC
945      and change side-drag S/R to use viscosity from mom_calc_visc
946      (can switch back by setting sideDragFactor=0.); affects results at
947      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
948       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
949    o vorticity & strain are now computed without masking, to account for
950      no-slip-side BC in variable viscosity calculation ; mask is applied
951      anyway later on, before computing advection/coriolis terms.
952    o modify exp4 to test new obcs support for reading from external files
953      and for passive tracers
954    o fix behavior of ptracers_monitor when monitor output is written to a
955      netcdf-file; still not independent of monitor.F (writes in the same
956      file).
957    o change default value of tRef (put a uniform, meaningful value for ocean
958      & atmos) and initialize sRef (was missing, as Martin mentioned).
959    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
960      to be proportional to enstrophy dissipation length.  Thus,
961       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
962      This is now consistent with Smagorinsky and with the manual.
963    
964    checkpoint57u_post
965    o OBCS and PTRACERS: add open boundary support for passive tracers
966      - either use homogenous (pseudo) v.Neumann conditions or prescribe
967        OB-values from file; this is not different from the way theta and salinity
968        are treated
969      - however, Orlanski-radiation conditions are not supported, and the model
970        will stop if you use pTracers and Orlanski at the same time.
971      - beefed up the rountine obcs_external_fields_load: now only those open
972        boundary values are overwritten with values from files for which there
973        are really files, otherwise the OB-fields remain untouched. This makes
974        it possible to use different OBs at different ends of the domain (as
975        with EXF)
976    o reduce number of exch calls in shap_filt (s2).
977    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
978      truncation level) 4/5 MLAdjust test results (11&12 digits match).
979    
980    checkpoint57t_post
981    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
982    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
983      same truncation, independent of the face number: affects affects several
984      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
985    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
986      note that biharmonic viscosity + no-slip was not tested in any experiment.
987    o fix bug in non-linear free-surf side-drag ; generate new output for
988      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
989    o make mnc honor the writeBinaryPrec flag for most kinds of output
990    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
991    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
992      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
993    o add brackets in multi-terms sum to get same truncation, independent of
994      the face number (manage to get exactly same value of gU,gV at the cs-edge)
995      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
996    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
997      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
998      a maximum grid-scale Reynolds number.  Also, changes all length calculations
999      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1000      Suggested values of viscosity parameters found in mom_calc_visc.
1001      Many new viscosity diagnostics available.
1002    
1003    checkpoint57s_post
1004    o Add clearing-house for viscosity calculations, mom_calc_visc and
1005      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1006      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1007      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1008      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1009      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1010      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1011      ViscAhStrain and viscAhTension are now retired.
1012    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1013    o In response to JMC's bug report, genmake2 now ignores any soft-links
1014      that it finds in the *current* directory when searching for files.
1015      Soft-links found in any other source directories will still work as
1016      they did before.
1017    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1018      a C routine to unlimit the stack size
1019    o mnc-ify pkg/aim snapshot vars
1020    o mnc-ify pkg/land as requested by Daniel
1021    o various changes to mnc including:
1022      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1023      - output can now be grouped so that all files within a group
1024          change the ITER portion of their names in lock-step together
1025      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1026          and works with both EXCH1 and EXCH2 (but needs more testing)
1027      - writing works for all verification test cases w/ g77 on Linux
1028    
1029    checkpoint57r_post
1030    o make MNC variable initialization happen earlier
1031    o add diagnostics for (almost) each term of the momentum Eq.
1032    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1033    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1034    o remove MINIMAL_TAVE_OUTPUT option ;
1035      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1036    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1037      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1038    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1039    o add time-dependent SST, SSS control
1040    o cost terms in ecco/ modularized (new cost_generic.F)
1041    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1042    o new infrastructure for seaice model vs. obs misfits in seaice/
1043      * driver from the_main_loop.F is seaice_cost_driver.F
1044      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1045      * gradient check in Exp. 6a of natl_box_adjoint/
1046    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1047      (see README file)
1048    
1049    checkpoint57q_post
1050    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1051    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1052      - bug was reported by Jean-Michel and Ian Fenty
1053    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1054      update exp. cpl_aim+ocn output.
1055    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1056      Needed for high-res. runs with large global files
1057      to be able to limit tapelev size
1058    o Changed some tests for adjoint:
1059      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1060      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1061      * global_ocean.90x40x15/ back to default 3-level checkpointing
1062    o Modifications to enable scripted COMMON to MODULE conversion
1063      * verification/OpenAD/code/ has necessary scripts and description;
1064      * converts, compiles and runs successfully;
1065    
1066    checkpoint57p_post
1067    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1068    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1069      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1070    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1071    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1072      (was already the case for dissipation with mom_vecinv,
1073       and also the case for grad.PhiHyd when staggered-timeStep)
1074      This will allow to put dissipation out-off the AB time-stepping.
1075     Unfortunately, affects truncation error. Update output of exp. that "fails"
1076      (cg2d matching number) and leave the others for later: front_relax(10),
1077      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1078      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1079    
1080    checkpoint57o_post
1081    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1082      (2) its ready to be documented during the 20050801 DocFest
1083    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1084      for ideal_2D_oce and lab_sea on linux_ia32_g77
1085    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1086      in global1x1_tot/code_seaice_adj to access indices 32, 33
1087      (worth another tag)
1088    
1089    checkpoint57n_post
1090    o adding precip control xx_precip 32
1091    o adding swflux control xx_swflux 33
1092    o Replacing 10 forcing penalty cost routines by 1 generic.
1093    o Implementing partitioning in time-mean and variable adjustment
1094      for atmos. state.
1095    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1096    o in natl_box_adjoint:
1097      * updated exp 1 to 10
1098        (but does not have time-mean vs. variable split results yet)
1099    o updated global1x1/*_seaice_adj/
1100      to incorporate latest changes
1101    o enable useSingleCpuIO for mdsio vector routines
1102      (applies in particular to tapelev I/O)
1103    o removed inefficient K-loop in all active_file*control*.F
1104    
1105    checkpoint57m_post
1106    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1107      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1108    o pkg/exch2: filling of face-corner halo regions is optional
1109      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1110    
1111    checkpoint57l_post
1112     tag before updating tutorials (pre-release-2)
1113    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1114       for output and interpolation of input fields onto model grid)
1115    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1116       Affects results of exp. rotating_tank ; update output.txt.
1117    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1118          and taking the square quantity and/or using a fraction-weight field.
1119    o fix aim_diagnostics_init.F mate numbers.
1120    o add mnc output capability to diagnostics/diagstat and update
1121      our cvsignore files for the ACSII output generated
1122    
1123    checkpoint57k_post
1124    o lab_sea now uses diagnostics package and provides a suite of
1125      new EXF diagnostics output.
1126    
1127    checkpoint57j_post
1128    o exf
1129      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1130        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1131        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1132      * extended diagnostics output
1133        - now includes all EXF variables
1134        - hs, hl moved to common block
1135        - separate S/R for diagnostics, called after ctrl vector is added
1136        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1137        - EXFqnet contains true Qnet (i.e. includes qsw)
1138      * updated verif. lab_sea, global_with_exf
1139      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1140        to ensure that diagnostics sees a true EXFqnet
1141    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1142    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1143      several times with different frequencies.
1144    o mnc-ify the thsice package as requested by Daniel Enderton
1145      - the monitor--MNC output needs work
1146      - many attributes need to be added (most are currently blank)
1147    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1148      - many attributes need to be added (most are currently blank)
1149    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1150    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1151    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1152      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1153         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1154    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1155     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1156    
1157    checkpoint57i_post
1158    o Diagnostics package was changed: diagnostic allocation is now deactivated
1159      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1160    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1161      add 1rst Order upwind vertical Shear.
1162    o add a quick fix for A/B checkpointing in OFFLINE mode
1163    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1164      end-run around the C/Fortran linking horror in eesup/src/timers.F
1165    o added pkg/runclock: allows user to terminate run based on wall clock
1166    o added non-hydrostatic scaling parameter: nh_am2
1167    o pkg/my82: futile attempt to make results compiler-independent by adding
1168      some "_d 0", etc. no effect.
1169    o for mnc output, fill the 'T' coordinate var with myTime and create a
1170      separate 'iter' variable for iteration count
1171    o pkg/diagnostics:
1172      add new capability: output of Global/Regional & per-level statistics ;
1173      tested against monitor output (including land & thSIce) on various exp.
1174    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1175    
1176    checkpoint57h_done
1177      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1178      data.diagnostics, data.gchem, data.ptracers) is done.
1179    
1180    o pkg/diagnostics: prepare for Global/Regional statistics.
1181      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1182    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1183      and rename it: DIFFERENT_MULTIPLE
1184    
1185    checkpoint57h_post
1186    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1187    o pkg/diagnostics: change output frequency, now in seconds (instead
1188      of Nb of iterations). This requires to change data.diagnostics.
1189    checkpoint57h_pre
1190    
1191    o in mnc, let the user create the output dir if both mnc_outdir_date
1192      and mnc_outdir_num are false
1193    o add fflags() to pkg/diagnostics which allows one to specify, on a
1194      per-file basis, the file precision [default behavior is unchanged]
1195    o added diagnostics to pkg/kpp, including computation of mixed layer
1196      depth based on a temperature/density criterion
1197    o updated verification/natl_box to test the new pkg/kpp diagnostics
1198    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1199    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1200    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1201      not mnc -- this mistake was found by JMC and is now corrected
1202    
1203    checkpoint57g_post
1204    o add Adams-Bashforth 3rd Order time stepping:
1205      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1206      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1207    checkpoint57g_pre
1208    
1209    o make lambda[Theta,Salt]ClimRelax spatially varying
1210      (default remains spatially uniform constant based on tau)
1211    o added new control variables
1212      * init. uVel, vVel, etanN
1213      * lambda[Theta,Salt]ClimRelax
1214    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1215      (suggested by G. Forget)
1216    
1217    checkpoint57f_post
1218    o add parameter "baseTime" = model base time = time at iteration zero
1219      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1220      account for baseTime shift
1221    o move Coriolis arrays from PARAMS.h to GRID.h
1222    checkpoint57f_pre
1223    
1224    o mnc-ifying the seaice package
1225    o introduced an alternative length scale calculation for use in the limiting
1226      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1227    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1228    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1229      as well as grad(vort3).  Made it compatible with both approximate form
1230      for the cubed sphere and full form of these gradients.  Added flag
1231      useFullLeith to select between approximate and full form.  
1232    o add "d0" in getcon.F to reduce differences between compilers/platforms
1233      update output.txt of exp. fizhi-gridalt-hs
1234    o change port_rand funtion to allow to set the seed.
1235    o fix obscure MNC bug involving conversion between reals and integers
1236      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1237        new version is now more standards-compliant
1238    o adjoint-related modifications
1239      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1240      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1241      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1242    
1243    checkpoint57e_post
1244    o Adding eddy stress controls a la Ferreira et al.
1245    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1246    
1247    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1248      update output.txt of exp. fizhi-gridalt-hs
1249    o add more "Z" dimensions and associated coordinate vars to MNC
1250    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1251    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1252      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1253      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1254      months and years.  Requires pkg/cal.
1255    o diagnostics: add pickup functionality
1256      - off by default for backwards compatibility
1257      - current version only uses MDSIO -- MNC will be added
1258    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1259    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1260    
1261    checkpoint57d_post
1262    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1263    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1264      output from the diagnostics package
1265    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1266    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1267      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1268    o add coordinate variables to the MNC output from the diagnostics package
1269    o change MNC-flags default value: true when useMNC=TRUE
1270    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1271      the ability (off by default) to read the grid information using MNC
1272    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1273    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1274    o do snap-shot diagnostics at the middle of the time-interval (instead of
1275      at the end).
1276    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1277      new test for AIM with thSIce + slab-ocean
1278    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1279    o move state variable diagnostics to the beginning of the time step ;
1280      (note: still needs some work specially for snap-shot diagnostics)
1281      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1282    
1283    checkpoint57c_post
1284    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1285    o generate new output.txt files on faulks with g77 & the new -ieee option
1286    checkpoint57c_pre
1287    
1288    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1289      update output.txt of exp. global_ocean.90x40x15
1290    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1291      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1292    o add saltFlux(+File) forcing capability with periodicExternalForcing
1293    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1294    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1295    o improvements for the MNC output from DIAGNOSTICS:
1296      - correct handling of the unlimitied dimension
1297      - all dims now have associated coordinate variables
1298      - variables located at U, V, and Corner ("Z") points are now written
1299        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1300        *all* data points are output
1301    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1302    o added pkg/seaice/seaice_monitor.F
1303    o mdsio_readfield.F can now read files visible only to master MPI process.
1304    o pkg/seaice: some test code for ice-modified ocean stress
1305    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1306      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1307      spurious negative numbers for precipitation and humidity.  Will cause
1308      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1309    o pkg/ctrl/
1310      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1311        May be enabled via doPackDiag
1312      *  introduce z-scaling of
1313         + gradient (doZscalePack) and
1314         + control (doZscaleUnpack)
1315    o pkg/mdsio/
1316      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1317      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1318    
1319    checkpoint57b_post
1320    o simplify options in diagnostics_fill arguments (remove weird combinations)
1321    o fix MNC coordinate variables so that they now contain per-face index
1322      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1323      general, EXCH2 grids are only aligned to a "local" coordinate system
1324    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1325    o Implement instantaneous output within pkg diagnostics:
1326      setting a negative frequency in data.diagnostics produces
1327     "snap-shot" output (as opposed to time-average if freq > 0)
1328    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1329      NOTE: change ptracer diagnostics name: use 2 characters to work with
1330            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1331    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1332      becomes the coordinate variable for the 'T' dimension
1333    o add CF-style coordinate variables to MNC
1334      - just a first cut:  numbers are meaningless on the cubesphere and
1335        missing along the T axis but otherwise it works!
1336    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1337    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1338    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1339      this is based directly on what the model compute, so that the content of
1340      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1341    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1342    o clean up build options files for SunOS, in particular
1343      - remove -traditional from xmakedepend
1344      - change -xarch=v9 to -xarch=native for f77
1345      - restore use of make (not gmake)
1346      - add CC=gcc if using g77
1347    o changes per discussion of AM, JMC, & EH3 today:
1348      - move redundant "grid" variables out of "state" -- in preparation of
1349        creating proper CF-style coordinate variables and in recognition
1350        that any/all grid variables can be easily copied (eg. w/NCO) from
1351        the grid files into any of the other NetCDF files
1352      - *always* output grid variables with MDSIO (this will eventually be
1353        changed)
1354      - output MNC grid file if useMNC is true
1355    o every instance of _END_MASTER() has been found and replaced with
1356      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1357      preprocessors
1358    o re-arrange diagnostics pkg initialisation:
1359     - allow each package to extend the available diagnostics list
1360     - add some checking and fix small problems (multi-threaded, ...)
1361     - new S/R diagnostics_fill (replace fill_diagnostics):
1362       look through the short list of active diag. (instead of the long list)
1363       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1364    
1365    checkpoint57a_post
1366    o this set of changes restores TAMC compatibility
1367      tested for global_ocean.90x40x15 adjoint on trough
1368      (what a pain)
1369    
1370    checkpoint57a_pre
1371    o some modifs in tools/build_options for sunos
1372    o call ctrl_pack for ctrl at end for optimcycle=0
1373    
1374    checkpoint57
1375    o add horizontal bi-harmonic viscosity for vertical velocity
1376      - new parameter viscA4W (defaults to viscA4)
1377      - affects only non-hydrostatic code
1378      - to be done: no-slip lateral boundary conditions
1379    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1380    o implement Implicit Vertical advection for pTracers
1381    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1382      (implemented also for implicit vertical diffusion & advection)
1383    o OBCS: extend application of tracer open boundary conditions
1384      to a strip beyond the boundary of width Olx/Oly
1385    o add call monitor to TAF set of required calls (flow directives)
1386      and include in natl_box_adjoint
1387    o untangle a few ifdefs related to cost, ctrl, autodiff
1388      untangel a few ALLOW_ECCO_OPTIMIZATION
1389    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1390      (theta2, salt2 in ecco_cost_weights)
1391    
1392    checkpoint56c_post
1393    o OBCS as control variables
1394      - update ctrl_ad_diff.list, obcs_ad_diff.list
1395      - remove balance of obcs controls from default
1396      - fix index bug nobcs in ctrl_init
1397      - fix dummy fields filen in ctrl_pack
1398      - add dummy weights for obcs
1399    o lsopt: comment out fort.94 output
1400    o optim:
1401      - remove unnecessary header files
1402      - adjusted namelists
1403      - add xerbla.F to Makefile
1404    o exf:
1405      - multiple modifications of exf_check_range
1406      - unit change in exf_init_runoff from [m/year] to [m/s]
1407    o mdsio:
1408      - i/o-vector change debugLevel from debLevA to debLevB
1409    
1410    checkpoint56b_post
1411    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1412      is called from DO_THE_MODEL_IO
1413      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1414      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1415      - clean up PTRACERS_WRITE_TIMEAVE a little
1416    o add another verification experiment that tests both the cfc-pkg and
1417      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1418      reactive tendencies treated inline with regular timestepping
1419    o testreport previously did a lousy job of comparing small numbers, so
1420      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1421      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1422      testreport.
1423    o ptracers_monitor: bug fix for MPI
1424    
1425    checkpoint56a_post
1426    o GCHEM: finish reorganizating the package
1427      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1428        (introduces another 3D-array for each passive tracer, but only if
1429        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1430        gchemTendency is not needed because the timestep is done separately)
1431      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1432      - GCHEM is now---more or less cleanly---separate from PTRACERS
1433      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1434        so clear to me how that should be done in a general way.
1435    o CFC: improve formatting of output in CFC_ATMOS
1436    o PTRACERS:
1437      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1438        that ALL experiments with ptracers enable can be checked. This makes
1439        GCHEM_MONITOR obsolete.
1440      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1441        monitorFreq
1442      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1443    o add PTRACERS (PTR0[1-5]) to testreport output
1444    o exf_check_range:
1445      * default changed to .TRUE.
1446      * will check values for niter0 if debLevA, every timestep if debLevB
1447      * STOP in exf_check_range if 'out of range'
1448      * range chosen generous to allow for potential extema
1449      TBD: a version with stricter range
1450           permitted range would be runtime parameters
1451    o GMredi:
1452      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1453      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1454      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1455    o GCHEM:
1456      - move call to GCHEM_FORCING_SEP, so that it is now called before
1457        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1458      - introduced a useGCHEM runtime flag and applied it everywhere.
1459      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1460        this flag is now only visible within GCHEM-pkg routines.
1461      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1462        be replaced by a 3D array that is computed before thermodynamics; for
1463        this, the tracer ID iTracer had to be included into the parameter list
1464        of ptracers_forcing
1465      - set up forward_step to call gchem_forcing, that will replace
1466        gchem_forcing_int in ptracers_forcing
1467      - cleaning up
1468    o small cleaning of exch2: remove files that are also in eesupp/src
1469    
1470    checkpoint56
1471    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1472    o mnc: cleanup "full" files--fixes out-of-memory problem
1473    o ECCO-GODAE
1474      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1475      * fully merged and updated from SIO code
1476        windstress sign change affects
1477        - exf_inscal_[u/v]stress
1478        - sign of xx_tau[u/v] adjustments
1479        - signs in cost_scat
1480      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1481      * natl_box_adjoint updated and compressed
1482      * 2-level checkpoint switch added
1483        (tested in EXP. 1 of natl_box_adjoint)
1484      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1485    o SVD
1486      * first complete, non-hacked version for SVD calculations
1487      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1488        performed via direct access files admtlm_vector.it????
1489        (via ctrl_[un]pack)
1490      * optimcycle is used for ARPACK iteration counter
1491        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1492      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1493        and add linear transforms where necessary
1494      * controls are initial/final SST, SSS (can be extended; need to check
1495        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1496    o mdsio: filename info to both stderr, stdout
1497    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1498      from sign change
1499    
1500    checkpoint55j_post
1501    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1502      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1503    o add consistent build directories and .cvsignore files to verification
1504    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1505    o make all subroutines 30 or less characters in length for certain older
1506      compilers to work (a thorough search only turns up two routines in
1507      pkg/ptracers)
1508    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1509      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1510    
1511    checkpoint55i_post
1512    o change arrays for total vertical diffusivity (2.D if explicit,
1513      3.D if implicit) ; each ptracer uses its own background value.
1514    o added mnc/NetCDF output capability to ocn_compon_interf
1515      - added bits to verification/cpl_aim+ocn so that it can run on
1516        ITRDA and other clusters without the mpirun "-wd" option
1517    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1518      configuration
1519    o give MNC the ability to create additional files rather than
1520      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1521      - the default is just less than 2GB which is a practical limit
1522        on many systems
1523    o Compute the non-local term using either KPP vertical diffusivity (=default)
1524       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1525    
1526    checkpoint55h_post
1527    o add verification test "vermix"
1528    o remove all the *_ioinc flags and replace with the single global
1529      outputTypesInclusive flag
1530    o allow to set a vertical profile of vertical diffusivity for T & S
1531    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1532    o useMNC moved from data.mnc to data.pkg
1533    
1534    checkpoint55g_post
1535    o Renaming carbon AD experiments to comply with testreport conventions
1536    o Updating adjoint of Held-Suarez hs94.1x64x5
1537    o Fixing directives for non-ECCO forward_step, after ECCO directives
1538      have been fixed to avoid recomp. of do_oceanic_phys
1539      Works well for global_ocean.90x40x15,
1540      but recomp. issue remains for carbon
1541    o Updating adjoint output for natl_box_adjoint after
1542      pkg/ecco has been modified (see taga c55d_post)
1543    
1544    checkpoint55f_post
1545    o rename to timeave_init_fixed
1546    
1547    checkpoint55e_post
1548    o some delicate re-shuffle of store directives to avoid one
1549      extra call of do_oceanic_physics
1550      affects ecco_the_main_loop.F, do_oceanic_physics.F
1551      checkpoint_lev1_directives.h
1552    o NB: this may break global_ocean adjoint temporarily,
1553      but it is clear how to fix it. Will do later, need this now.
1554    
1555    checkpoint55d_post
1556    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1557    o ecco_cost_weights is modified to 1x1 runs
1558    o modifs to allow observations to be read in as
1559      single file or yearly files
1560    o enable to read exf forcing fields as either
1561      single file or yearly files (flag useExfYearlyFields)
1562    checkpoint55d_pre
1563    
1564    o switch between 2-level and 3-level checkpointing
1565    o add ability of MNC to write local and "partial" (eg. 2D slices where
1566      the full 3D field is never actually stored) arrays to NetCDF files
1567      with the correct (that is, the complete multi-dimensional) set of
1568      array indicies
1569      - used in mom_vecinv() to write the diagFreq output
1570      - tested (demonstrated) in verification/aim.5l_cs
1571    o further mnc-ification
1572      - add verification/lab_sea to the list with mnc setups
1573      - fix undefined mnc v-names in cd_code
1574      - add kpp to mnc output (both snapshot and timeave)
1575    o non-hydrostatic code
1576      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1577        in calc_gw.F
1578      - defaults to viscAh
1579      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1580        friction or Leith) in non-hydrostatic mode, as long as there is
1581        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1582    o pkg/cost
1583      extend simple cost functions to treat time mean quantities
1584      (T,U,V) via cost_accumulate_state from cost_tile
1585    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1586        be 2 times larger than the minimum size the advection scheme requires.
1587        now get a perfect conservation of salt in advect_cs test-exp (updated)
1588    o GGL90 (Gaspar's TKE mixed layer)
1589      - add horizontal diffusion of TKE, requires exchanges in
1590        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1591        default. In OPA there is no horizontal diffusion of TKE but the
1592        mixing coefficients are computed from a horizontal average of TKE of
1593        6 points or so. I think that diffusion has a little more physical
1594        justification.
1595      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1596        was in vain)
1597      - mask tke-variable in ggl90_init
1598    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1599    o fix biharmonic diffusion on CS-grid.
1600    o more obcs stuff
1601      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1602        for reading boundary values. This routine is called from
1603        obcs_prescribe_read
1604      - updated obcs_check
1605      - changed sponge layer relaxation parameter units for days to seconds
1606      - turned off sponge layer by default
1607      - changed argument list of OBCS_CALC to myTime+deltaTclock
1608      - fixed about 35 bugs in obcs_external_fields_load
1609    
1610    checkpoint55c_post
1611    o obcs stuff
1612      - new runtime flags useOBCSprescribe, useOBCSbalance
1613      - re-arranged obcs_calc
1614      - moved exf_getobcs to obcs_prescibe_read
1615        obcs_prescibe_read is called after ORLANSKI stuff
1616        and independent of it (executable can contain all).
1617      - updated obcs_check
1618      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1619        These may be necessary only if tangential velocities are
1620        prescribed at OB, not sure, needs testing.
1621    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1622      which simplifies the calls and passes the ifc check-bounds test
1623    
1624    checkpoint55b_post
1625    o add a 2D scalar, Z location, exchange_2 routine.
1626    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1627      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1628      affects advect_cs results (for the wrong reason): update output.txt
1629    o use a more standard discretization for biharmonic viscosity ;
1630     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1631      affects results of dome set-up: update output.txt
1632    o fix gad_advection.F (CubedSphere part), back to version 1.23
1633    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1634    
1635    checkpoint55a_post
1636    o merged code to
1637      * prescribe/read time-dependent open boundaries
1638        (works in conjunction with exf, cal)
1639      * sponge layer code for open boundaries
1640      * each boundary N/S/E/W now has its own CPP option
1641        (healthy for the adjoint)
1642    
1643    checkpoint55
1644    o up-to-date adjoint of previous breaks
1645      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1646      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1647      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1648      - carbon: * remove tr1-related adjoint verification
1649                * add ptracer as control variable
1650    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1651      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1652    
1653    checkpoint54f_post
1654    o in verification/carbin/ remove experiment related to
1655      ALLOW_PASSIVE_TRACER (array tr1 etc)
1656      code_ad/ input_ad/ results_ad
1657    
1658    o add two new packages
1659      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1660        + subject to optimization (memory)
1661      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1662        + subject to reordering (many GOTOs in the original code)
1663        + so far opps is called for every (i,j) point, and then operates in
1664          the vertical; one may want to reorder the scheme in order operate in
1665          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1666          fields)
1667    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1668      - all verification tests compile and run with linux_ia32_g77
1669      - defaults are compatible with current input files--nothing
1670        should change if you were not previously using MNC
1671      - MNC output has been added in numerous places (eg. timeave)
1672        but there are still a few writes not yet do-able with MNC
1673        (this is in progress)
1674      - flags now allow for either/or/both use of MDSIO and MNC and
1675        documentation will soon follow
1676      - numerous small formatting cleanups for ProTeX
1677    o add version info (via BUILD_INFO.h) to MNC and stdout
1678    
1679    checkpoint54e_post
1680    o add two new packages
1681      - pp81 (Packanowski and Philander, 1981), Richardson number and
1682        stratification dependent mixing
1683      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1684      - these scheme operate in a similar manner as KPP (without ghat, of
1685        course), however there is only one diffusivity that is used for both
1686        temperature and salinity (and passive tracers)ç
1687    o add offline package
1688    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1689      provided by Stephanie Dutkiewicz
1690    o genmake2: add ability to search for C compilers and cleanup test output
1691      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1692    
1693    checkpoint54d_post
1694    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1695    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1696      leading to additional shift by 5 days each year of integration
1697       (i.e. leading to considerable offset over the years)
1698    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1699    o start with no AB and no initial filtering (staggerTimeStep):
1700      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1701    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1702      (external loading & cpl import/export stay in forward_step.F)
1703    o update coupling interface to work with new staggerTimeStep
1704    o change MDSIO ptracers_pickup.
1705    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1706    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1707    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1708    
1709    checkpoint54c_post
1710    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1711      this affects (truncation error) output.txt of test-exp:
1712       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1713    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1714    o change Qnet to always be the net heat flux, (+upward).
1715      affects (truncation error) output of natl_box exp.: updated
1716    o define the max number of passive tracers in PTRACERS_SIZE.h
1717    o start to test mnc routinely in exp0
1718    o add sea-ice loading (sIceLoad) as a new forcing field.
1719    
1720    checkpoint54b_post
1721    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1722       impressive on Altix and Opteron systems)
1723    o diagnostics can now write NetCDF files through the mnc package
1724    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1725    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1726    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1727      affects (truncation error) output of lab_sea & natl_box exp.: updated
1728    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1729    
1730    checkpoint54a_post
1731    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1732    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1733    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1734    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1735      + internal_wave (shift in writing cg2d_ini_res)
1736    checkpoint54a_pre
1737    
1738    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1739      - modified verification/lab_sea and natl_box_adjoint accordingly
1740    
1741    checkpoint54
1742    checkpoint53g_post
1743    o prepare splitting of thermodynamics: store convect.counter in common block
1744    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1745      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1746    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1747    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1748    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1749    o restore adjointability
1750    
1751    checkpoint53f_post
1752    o modifications that affect AIM experiment results (update output.txt):
1753      - no advection of S at top interface Nr (pkg/generic_advdiff)
1754      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1755    o AIM pkg:
1756      - include stability function into surf.Flux derivative relative to Tsurf
1757      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1758    
1759    checkpoint53e_post
1760    o merged cylindrical coord configuration
1761    o added rotating_tank experiment
1762    checkpoint53e_pre
1763    
1764    checkpoint53d_post
1765    o faulks upgraded: re-generate output.txt that have changed:
1766       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1767    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1768    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1769    o added Sadourny discretization of Coriolis
1770      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1771      - re-enabled use of omega3 (useAbsVorticity)
1772    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1773      vector-invariant equations
1774      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1775    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1776      hopefully without new bugs
1777      - still to do: biharmonic friction for non-hydrostatic w
1778    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1779    o regenerated output for global_ocean_ebm (using -ieee)
1780    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1781      of mom_common/
1782      - simple re-arrangement of instructions within computing loop
1783    checkpoint53d_pre
1784    
1785    checkpoint53c_post
1786    o new version of coupler for AIM+thSIce and Ocean models
1787     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1788     - land: change Evaporation of snow
1789     - aim with thSIce: fix bug in snow-precip.
1790    o changes to calc_gw.F
1791     - bug fix for w^2 term near the bottom boundary
1792     - (hopefully) improve the lateral slip boundary condtions for use with
1793        partial/looped cells
1794      - because the bug fix changes two verification experiments anyway (exp5
1795        and plume on slope), change the lateral boundary condition from half slip
1796        to the value of no_slip_sides
1797    o ebm package wasnt quite up to the parallel task. Fixed that.
1798    o Adjoint of EBM package + verification
1799      * TLM OK
1800      * ADM not sufficient accuracy yet (needs further testing)
1801    
1802    checkpoint53b_post
1803    o Commiting new energy balance model to repository
1804      * package is pkg/ebm
1805      * verif. is verification/global_ocean_ebm
1806      * references are in ebm_driver.F
1807    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1808    C        Global thermohaline circulation. Part I:
1809    C        Sensitivity to atmospheric moisture transport.
1810    C        J. Climate 12(1), 71-82
1811    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1812    C        Global thermohaline circulation. Part II:
1813    C        Sensitivity with interactive transport.
1814    C        J. Climate 12(1), 83-91
1815    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1816    C        Destabilization of the thermohaline circulation
1817    C        by atmospheric eddy transports.
1818    C        J. Climate 7(12), 1870-1882
1819    o Will need long integration testing.
1820    checkpoint53b_pre
1821    
1822    o created pkg/mom_common in preparation for variable viscosity code
1823    o renamed and split ini_mnc_io
1824    o pkg/land: only liquid water can diffuse or run-off
1825    o AIM using land: soil wetness availability account for snow
1826    o added printMapIncludesZeros to EEPARMS namelist
1827    
1828    checkpoint53a_post
1829    o restore TAMC compatiility for exf_constants.h
1830      (no usage of _d in .h)
1831    o Additional storing in KPP in an attempt to fix
1832      TAMC problem with adjoint of KPP code.
1833      (no success...)
1834      Identical code works fine with TAF.
1835    o Fixed verification/natl_box_adjoint experiments.
1836      Initial conditions for Experiments 4 and 5 are now
1837      set to "SEAICE_initialHEFF=0", which is more reasonable,
1838      and hence gives results closer to that of Experiment 2.
1839      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1840    
1841    checkpoint53
1842    o stable checkpoint with up to date adjoint
1843      TLM tests only run for 1st grdchk at the moment. Its unclear if
1844      this is a code problem or a problem with resetting code for g_
1845      variables that is being autogenerated wrong.
1846      Otherwise:
1847       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1848       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1849         are both still in chaos following their security messes.
1850    
1851    checkpoint52n_post
1852    o various build (mostly genmake2) changes including:
1853      - ability to build/run more easily within Cygwin and MacOS X
1854      - more complicated Makefiles with a stronger dependence on Gnu Make
1855    o pkg/seaice modifications
1856      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1857        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1858        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1859      - changed proxy for geostrophic velocity and updated
1860        verification/lab_sea/results/* accordingly
1861      - removed ADI dynamic solver from pkg/seaice
1862      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1863        they caused a segmentation fault under certain circumstances
1864      - removed unused field WATR
1865    o bug fix in exf-package:
1866      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1867         now reflect that.
1868    o small fixes in the cal-package:
1869      - set reference date to first of January for the 'model'-calendar
1870      - failing of cal_CheckDate in cal_FullDate now actually results in a
1871        warning
1872    o small modifications in exf-package to increase flexibility:
1873      - change climtempfreeze from a constant to a runtime parameter that
1874        is specified in data.exf_clim (default = -1.9)
1875      - introduce runtime parameter windstressmax (default = 2.0) that is
1876        specified in data.exf
1877    o fix in pkg/thsice:
1878      - update Evap (Tsf changes) to be consistent with Latent heat flux
1879      - maintain snow precipitation unchanged (even if Tsf >=0).
1880     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1881    
1882    checkpoint52m_post
1883    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1884      this does not change any of the results, because myIter=0 in swfrac always
1885      lead to jwtype=2 (the default anyway), but the call makes little sense
1886      as a default
1887    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1888    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1889      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1890    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1891    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1892    o extending useSingleCpuIO option to work with new exch2 I/O format
1893      - old-style, missing-tile I/O is still accessible by defining CPP
1894        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1895    o monitor package can write to NetCDF files and/or STDOUT
1896    o fix re-definition bug in MNC_GRID_INIT_ALL()
1897    o doc/api_reference added
1898      - a framework for building an API Reference Manual using all
1899        the "protex" comments embedded in the code
1900      - see pkg/generic_advdiff, pkg/mnc for examples
1901    o MNC:
1902      - make myThid the last argument for all subroutines
1903      - new default for the grid files: NO halos
1904      - add useMNC and other run-time flags
1905      - separate per-file-group handling of the unlimited dimension
1906      - early initialization of MNC w/ flags read at the eeboot stage
1907        and lookup tables set in initialize_fixed
1908      - write all MNC output to a freshly-created directory
1909    o thermodynamics sea-ice (thsice) is now tested with testreport.
1910    o test exp. advect_cs: use the standard cs32 grid ; update output.
1911    o Added functionality to grdchk:
1912      pick global i,j,k position (or nearest wet) where to perform check.
1913    
1914    checkpoint52l_post
1915    o new land formulation:
1916      a) use ground enthalpy as prognostic variable to ensure exact
1917         energy conservation.
1918      b) account for water temperature and for latent heat of freezing
1919         in all processes (rain, run-off, ground storage)
1920      c) compute surface and ground temperature implicitly.
1921    o aim_v23 modification for new land model:
1922      a) Treat separately land / ocean / sea-ice surface fluxes
1923         to allow implicit computation of land & sea-ice surface temp.
1924      b) add snow precipitation.
1925    checkpoint52l_pre
1926    
1927    o fix problem (when 1 tile is empty) in min/max monitor.
1928    o fix bug in timeAve (u,vZetatave in common block)
1929    o no restoring terms under ice for pkg/seaice
1930    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1931    o bug fix for pkg/seaice pickups
1932    o change MNC call locations and add coordinate attributes
1933    o mask vorticity at the corner ; affects global_ocean.cs output
1934    o fix ini_curvilinear_grid ; test CS experiments with mpi
1935    o aim.5l_cs: modify sea-ice fraction input file ; update output
1936    o exf: Adding simple range check routine for exf fields after read
1937    
1938    checkpoint52k_post
1939    o removed top-level directory "diags"
1940      - we migrated these functions to pkg/timeave a long time ago
1941    o fixed bug introduced in pkg/monitor
1942    o accuracy ctrlprec = 32 insuffient for gradient checks using
1943      averaged fields (I/O via cost_averages)
1944      -> use ctrl.h in active_file*.F to control I/O precision.
1945    o paramter list of CALL ADTHE_MAIN_LOOP
1946    o added initial do_the_model_io to ecco
1947    o set all ...Freq to zero after cost_final
1948      taveFreq, dumpFreq, pChkptFreq
1949    o MAIN and ECCO differentiability restored
1950    
1951    checkpoint52j_post
1952    o fix nchklev in tamc.h for global_ocean...
1953    o Bringing flow and store directives up-to-date
1954    o Really weird thing!
1955      call do_the_model_io from the_main_loop with parameters
1956      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1957      TAF places a faulty re-call of initialise_varia
1958      after cost_final call which should not be there!
1959    checkpoint52j_pre
1960    
1961    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1962      error messages
1963    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1964    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1965      debug output
1966    o modfied mdsio_writefield.F to handle non-global files under exch2
1967    o update AIM Cubed-Sphere exp (aim.5l_cs):
1968      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1969    o update AIM Equatorial Channel exp:
1970      use standard aim_v23 pkg and change the SST fields to be more realistic.
1971    o globalFile now works with exch2
1972    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1973      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1974    o limit timeave output for hi-res integrations
1975    
1976    checkpoint52i_post
1977    o removed CPP_EEOPTIONS.h from verification/*/code
1978    o updated the tiling for global_ocean_pressure
1979    checkpoint52i_pre
1980    
1981    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1982      the old pkg/aim).
1983    
1984    checkpoint52h_pre
1985    o shortened offending lines in exch2_send_rx?.template
1986    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1987    o genmake2: add build & execute test for NetCDF code
1988    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1989      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1990    o added useSingleCPUIO flag to monitor.F and mon_out.F
1991    o added temporary hack for sea-ice dynamics on the cube:
1992      metric terms are ignored and it is assumed that
1993      there is no sea-ice on cube faces 1, 2, 4, and 5.
1994    
1995    checkpoint52f_post
1996    o added exch2 cube routines to pkg/exch2
1997    o modified hs94.cs-32x32x5 to use it
1998    o added new grid files to hs94.cs-32x32x5
1999    checkpoint52f_pre
2000    
2001    checkpoint52e_post
2002    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2003      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2004    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2005      to work with implicit vertical advection and AB ;
2006    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2007    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2008     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2009    checkpoint52e_pre
2010    
2011    o fix bug in impldiff when Nr=1 or Nr=2.
2012    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2013    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2014    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2015      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2016    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2017    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2018    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2019    
2020    checkpoint52d_post
2021    o re-tiled many expts to allow comparison in multi-processor mode
2022      - updated output accordingly
2023      - changed hs94.128x64x5 to use intial T from file rather than use the
2024        random number generator
2025    o add infrastructure in model routines for fizhi and gridalt packages
2026    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2027    o changes to permit hi-res, cubed-sphere, configuration
2028      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2029      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2030      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2031        of surface winds for the cube
2032      (A verification experiment, based on global_ocean.cs32x15, but with
2033       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2034       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2035       complete with example surface forcing files and matlab scripts to look
2036       at the output and compare it with that of global_ocean.cs32x15.)
2037    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2038       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2039       to conform to the common rule.
2040    o check-in the first version of the coupler + interfaces for multi-components
2041       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2042       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2043       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2044       - ocean and atmos. share the same horizontal grid (no interpolation).
2045       - exchanges between component and coupler is done in forward_step
2046    o new verification experiment, cpl_aim+ocn:
2047       coupled ocean - AIM atmosphere on cs32 grid.
2048    
2049    checkpoint52d_pre
2050    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2051    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2052    
2053    checkpoint52c_post
2054    o Fixing OPTIONS files for use of exf:
2055      - ALLOW_ECCO not needed
2056      - ECCO_CPPOPTIONS.h should not be included from
2057        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2058        as has been the case in the past
2059      - All cal/exf related options are currently set in
2060        single header file. Should remain so until we
2061        agree on a consistent new policy.
2062    o Removed all CPP options for cal package.
2063      cal has no more CPP options.
2064    o modified STOREs in GAD_ADVECTION
2065    o corrected key comp. for passkey
2066    
2067    checkpoint52b_post
2068    o new version: "thsice" of thermodynamic sea-ice pkg:
2069     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2070     - modify fluxes but do not change theta directly;
2071     - light cleaning of bulk_force pkg (still needed with thsice).
2072     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2073       + output_thsice.txt to test thsice & bulk_force pkgs.
2074    o put back grid & coriolis monitor output.
2075    checkpoint52b_pre
2076    
2077    o call "do_the_model_io" at the beginning (=> dump initial state)
2078    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2079    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2080      (need info on NUMBER_OF_PTRACERS)
2081    o missing PTRACERS headers in some routines
2082    o default tamc.h in pkg/autodiff supposed to crash
2083      to ensure proper customization
2084    
2085    checkpoint52a_post
2086    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2087      - moved surfaceTendencyTice from pkg/seaice to main code
2088      - subroutine FREEZE_SURFACE now limits only surface temperature
2089        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2090        => new output.txt for global_ocean.cs32x15 & global_with_exf
2091      - keep the old version of FREEZE for backward compatibility;
2092        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2093      - corresponding modifs for TAF directives
2094    o added surface flux output variables to TIMEAVE_STATVARS
2095    o time-averaged output for pkg/ptracers
2096    o fix problem with ECCO-related divided adjoint
2097      snapshot file was missing some ad-variables,
2098      but no warning issued by TAF
2099    
2100    checkpoint52a_pre
2101    o some bug fixes for #undef REAL4_IS_SLOW
2102    
2103    checkpoint52 = ecco_c52_e35
2104    o after testing adjoints of checkpoint51u_post
2105    
2106    checkpoint51u_post
2107    o this is the post-merge tag of the ecco-branch
2108      (needs another clean checkout and re-testing)
2109    o various natl_box_adjoint configs and results
2110      but no input fields
2111    o obcs adjoint not yet merged!
2112    o adding ECCO global 1x1 and 2x2 degree configs
2113    o updated/extended some store directives for seaice
2114    o pkg/ecco now containes ecco-specific part of cost function
2115    o top level routines the_main_loop, forward_step
2116      supersede those in model/src/
2117      previous input data.cost now in data.ecco
2118      (new namelist ecco_cost_nml)
2119    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2120    
2121    checkpoint51t_post
2122    o this is the pre-merge tag of the ecco-branch
2123    
2124    checkpoint51s_post
2125    o cleanup: removed various obsolete #define-s
2126    o pkg/grdchk
2127      - renamed 'ph-grd 3' to 'grad-res'
2128      - merged from ecco-branch
2129        (remaining bug fixes for obcs gradient checks)
2130      - additional high-precision output for testreport
2131        (grep for 'precision_grdchk_result')
2132    
2133    checkpoint51r_post
2134    o cleaned up or removed CPP_OPTIONS.h files
2135    o updated results for some of the tests to reflect the new
2136      optfiles (-ieee: -O0 instead of -O3)
2137    
2138    checkpoint51q_post
2139    o cd_code:
2140      - moved cd_scheme.F -> cd_code_scheme.F
2141      - separate read_checkpoint from cd_code_ini_vars.F
2142      - separated cd_code part from write_checkpoint
2143      - updated AD_SOURCE, generated .flow
2144      - added CD_CODE_VARS.h to the_main_loop
2145      - Moving cd_code specific store dir.s to pkg/cd_code
2146    o ctrl package totally restructured
2147      - pack/unpack now optional and decoupled from
2148        xx_/adxx_ I/O
2149      - ctrl_pack/unpack cleaned
2150        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2151      - confined inclusion of AD_CONFIG.h to where necessary.
2152    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2153    
2154    checkpoint51p_post
2155    o create initial cd_code package
2156      - WARNING: the initialization of fields within packages
2157        is broken because INI_FIELDS (where READ_CHECKPOINT is
2158        called) is called *before* PACKAGES_INIT_VARIABLES.
2159        This seems to be backwards since
2160        1) its important to initially zero the entire field including
2161           the "halo" region
2162        2) zeroing needs to be done *before* reading pickup info
2163           and the pickup call might or might not happen in any
2164           particular run
2165      - this needs an overhaul for R2
2166    o cleanup verification/*/code/GMREDI_OPTIONS.h
2167    o cleanup testreport
2168    
2169    checkpoint51o_post
2170    o bringing AD-related verif's up to date with genmake2
2171      - carbon/
2172      - global_ocean.90x40x15/
2173      - hs.94.1x64x5/
2174      - (front_relax/ )
2175    o (more) consistent directory structure for AD-related verif.'s
2176    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2177    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2178    o bug fix in find_alpha.F for MDJWF:
2179      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2180        change rho -> rho-rhoConst
2181      - replace call find_rho to find_rhonum
2182    o initialisation of rFlx extended to full array (required by TAF)
2183      and shifted to thermodynamics
2184    o removed PTRACERS.h in ptracers routine
2185    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2186    o Correcting initialisations for fVerU, fVerV.
2187    o helping TAF to recognize dependency on kUp for
2188      fVerU, fVerV
2189    o Replacing delZ by delR in pkg/ctrl/
2190    checkpoint51o_pre
2191    
2192    o undid all of cp51 pending some cleanups and discussion
2193    o added the [#include "AD_CONFIG.h"] statement to all files that need
2194       it for adjoint/tl #defines
2195     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2196     o removed tools/genmake since it no longer works
2197    
2198    checkpoint51n_post
2199    o modifications to make FREEZE flux visible to pkg/kpp
2200      - moved surfaceTendencyTice from pkg/seaice to main code
2201      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2202      - subroutine FREEZE now limits only surface temperature
2203        (this means new output.txt for global_ocean.90x40x15,
2204         global_ocean.cs32x15, and global_with_exf)
2205    o added surface flux output variables to TIMEAVE_STATVARS
2206    
2207    checkpoint51n_pre
2208    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2209    o added [#include "AD_CONFIG.h"] to all files that use the following
2210      defines:
2211      - ALLOW_ADJOINT_RUN
2212      - ALLOW_TANGENTLINEAR_RUN
2213      - ALLOW_ECCO_OPTIMIZATION
2214    
2215    checkpoint51m_post
2216    o incorporating changes to get TAMC/TAF working in genmake2
2217      - added new TAMC/TAF targets to the Makefile
2218      - various cleanups related to package handling
2219      - these changes should have no impact on the forward model
2220    
2221    checkpoint51l_post
2222    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2223     - faster algorithm for cal_addtime.F
2224     - higher precision arithmetic, where needed
2225     - pkg/exf *startdate variables changed from calendar date to
2226       model integration time
2227    
2228    checkpoint51l_pre
2229    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2230    o enable to apply restoring on S & T only in a latitude band.
2231    o update output (external_forcing_surf modif. change truncation errors)
2232       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2233    
2234    checkpoint51k_post
2235    o change default to: useNHMTerms=.FALSE.
2236     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2237       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2238     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2239        exp1, ideal_2D_oce
2240     - change data file of oceanic exp (leave the results unchanged for now)
2241       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2242    o set gravitySign automatically according to the vertical coordinate used
2243      (and change sign: back to "logical" value: +1 when R increases downward)
2244    o added an include barrier to the default CPP_OPTIONS.h and
2245      removed the #include "PACKAGES_CONFIG.h" from it
2246    o fix a bug in mom_fluxform (from chk51j_post)
2247    
2248    checkpoint51j_post
2249    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2250    o adjusted some flow directives (dynamics, thermodynamics)
2251    o added cubed-sphere case to test cost function
2252    o heckpoint_lev?_directives.h now include
2253      pkg-specific directives, whenever those are enabled.
2254    o Moving pkg-specific flow directives to corresponding pkg
2255      Moving pkg-specific differentiation list to corresponding pkg
2256      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2257      ---> conventions are
2258           - pkg_ad.flow
2259           - pkg_ad_diff.list
2260           - pkg_ad_check_lev?_dir.h
2261    
2262    checkpoint51i_post
2263    o merge of the branch-genmake2
2264      - knowingly breaks the older genmake
2265      - automatic generation of all ALLOW_${PKG_NAME} defines
2266      - new testreport supersedes older testscript
2267    o large number of package inclusion and header cleanups
2268    checkpoint51i_pre
2269    
2270    o new output for adjoin of global ocean vector invariant
2271    o fix for checkpoint of thermodynamic seaice and bulk_force
2272    o Steph gchem various cleanups
2273    
2274    checkpoint 51h_pre
2275    o fixed some single quotes
2276    o modify gchem pkg to be more versatile
2277    o modifications to clean up dic pkg
2278    o add pkg/cfc
2279    
2280    checkpoint51g_post
2281    o provide links for ARPACK and ADM*TLM
2282    o start removing verification/vero/
2283    o update AD-related stuff
2284      (in particular some IF-statements in model/src/ routines)
2285    o adding to verification/global_ocean.90x40x15/ adjoint of
2286      vector invariant setup
2287    
2288    checkpoint51f_post
2289    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2290    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2291      of tracer Green's fucntions for ocean inversion project.
2292    
2293    checkpoint51f_pre
2294    o Added on-the-fly spatial interpolation capability
2295        "USE_EXF_INTERPOLATION" to pkg/exf.
2296      - This is a temporary Cartesian-grid hack until
2297        the super-duper ESMF coupler becomes available.
2298      - See verification/global_with_exf/README for usage example.
2299      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2300        flags and modified pkg/seaice accordingly.
2301    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2302        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2303        non-local transport term.
2304    
2305    checkpoint51e_post
2306    o pkg/mom_vecinv:
2307      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2308      - add time-ave diagnostic of vorticity advection.
2309    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2310    o atmospheric geopotential: - include water vapor effect;
2311                                - use p^kappa in p* scaling.
2312    o land pkg: read initial state from files.
2313    o AIM : add stratospheric drag in the upper level
2314    
2315    checkpoint51d_post
2316    o change function ILNBLNK (=> last non-blank char.) to return zero
2317      (instead of the string length) when the string. char is empty
2318    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2319    o modif's to restore TAMC compatibility
2320      - avoid "_d" constructs in PARAMETER declarations
2321      - avoid interrupting lines by comment lines
2322    o Use cluster local disks for purely local I/O
2323      vs. globally visible disks needed for ctrl stuff
2324      (merged from ecco-branch)
2325      - new active_file_loc... and mdsio_..._loc routines
2326      - affected packages: autodiff, ctrl, grdchk, mdsio
2327    
2328    checkpoint51c_post
2329    o introducing integer flag debugLevel
2330      - debLevZero: suppress all output
2331      - debLevA: standard
2332      - debLevB: equivalent to current debugMode=.TRUE.
2333    o introducing pathname variable mdsioLocalDir for mdsio
2334      that can be specified at runtime
2335      (relevant for cluster I/O to local disk)
2336    `
2337    >>>checkpoint51b_post
2338    adjoint of ptracers
2339    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2340    o extended state in checkpoint_lev?, etc.
2341    o alternative ctrl/cost with tr1 or ptracer
2342    o new comlev1_bibj_ptracers
2343    o new ptracers.flow
2344    o made ptracers_forcing same as external_forcing_s
2345    o added verification for adjoint with ptracers
2346      - adm. grdchk fail so far
2347      - tlm. grdchk OK
2348      - checked tapelev/comlev recomputations: OK
2349    <<<checkpoint51b_pre
2350    
2351    checkpoint51a_post
2352    o added code for biogeochemistry package
2353      - new pkgs: dic, gchem
2354      - new subroutine in ptracers
2355    o modify code for biogeo packages
2356      - in model/src and pkg/ptracers
2357    
2358    checkpoint51
2359    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2360      - autodiff, ctrl, exf, grdchk, seaice
2361      kept separate packages
2362      - cost, ecco, obcs
2363    o updating verification/internal_wave, verification/lab_sea
2364      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2365    
2366    checkpoint50i_post
2367    o Preparing next differentiable checkpoint and sync
2368      of MAIN vs. ecco-branch
2369      - 1st step: this one is differentiable
2370      - 2nd step: next(! not this) checkpoint will have updated packages
2371                  from ecco-branch)
2372    
2373    checkpoint50h_post
2374    o new package "land": provide surface BC for AIM.
2375    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2376    o AIM: use true log-P extrapolation for near surface temp (= as in
2377        F.Molteni paper) ; update aim.5l_cs output.
2378    o New variable in PARM03 for more flexible pickups
2379    o somewhat cleaned package initialisation sequence for
2380      ctrl/ cost/ ecco/ in packages_... routines
2381    
2382    checkpoint50g_post
2383    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2384      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2385      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2386        made the default because of faster convergence than ADI
2387    
2388    checkpoint50f_post
2389    o exf totally restructured
2390      - replaced all exf_set_ routines by one generic exf_set_gen.F
2391        and made sure it's still differentiable
2392      - split exf_getffields.F into new exf_bulkformulae.F
2393      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2394      - updated adjoint/makefile and relevant verif. accordingly
2395    
2396    checkpoint50f_pre
2397     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2398          + change Evap over land. (update aim.5l_cs output)
2399     o added missing .cvsignores and made uniform across expts
2400     o changed configuration of tidal_basin_2d expt
2401     o added pkg/debug functions for tracing code in fatal crashes
2402     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2403     o new fn in pkg/monitor to stop model if solution grows too big
2404     o removed lots of single quotes from comments
2405    
2406    checkpoint50e_post
2407    o make KPP work with PTRACERS
2408     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2409       nearly a copy of kpp_transport_s
2410     - there is no analogue to SurfaceTendencyS, so I have to use
2411       gPtr(of the surface layer) instead
2412    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2413    checkpoint50e_pre
2414    
2415    checkpoint50d_post
2416    o change kpp output from multiple-record state files to single-record state
2417      files analogous to write_state.F
2418    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2419      analogous to the cg2d-related output.
2420    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2421      so that writing to internal file fn (with length 512) fails.
2422    checkpoint50d_pre
2423    
2424    checkpoint50c_post
2425    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2426    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2427    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2428    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2429    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2430    
2431    checkpoint50c_pre
2432    Merging from release1_p13:
2433    o bug fix for pkg/seaice dynamic solver
2434    o Added SEAICE_initialHEFF to pkg/seaice
2435    
2436    checkpoint50b_post
2437    o store u*,v* in gU,V instead of in guNm1,gvNm1
2438    o in order to put the momForcing out of the Adams-Bashforth:
2439      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2440      to timestep.F
2441    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2442    o re-generate output for highly sensitive test-exp:
2443       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2444    
2445    checkpoint50b_pre
2446    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2447    o corrected CPP option mismatch in exf_Bulk... functions for case
2448      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2449    
2450    checkpoint50a_post
2451    o Bug fix for merging between c50 and KPP.
2452      ikey was passed from thermodynamics to kpp_calc via
2453      common block rather than being recomputed in kpp_calc,
2454      in contradiction with new key itdkey.
2455      New key ikppkey created, and tamc.h headers updated.
2456    
2457    checkpoint50
2458    - 2nd step of merge with ecco-branch:
2459      merge changes in ecco-branch back into main trunk
2460    - bug fix in find_alpha
2461    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2462    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2463    - merged some sliced AD support routines
2464    
2465    checkpoint49
2466    merged from ecco-branch:
2467    o exf:
2468      - Enable initialisation of forcing fields to constant
2469        (runtime) values.
2470      - in exf_getffields.F
2471        Reduce i-/j-loop to interior domain, discarding overlaps.
2472        That also fixes wrong TAF-key computations for key_1, key_2
2473        with bulf formulae.
2474      - exf_init.F modify #ifdef for exf_init_evap
2475      - exf_getffieldrec.F, ctrl_getrec.F
2476        The following INT-usages are not safe:
2477          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2478          fldcount = int(fldsecs/fldperiod) + 1
2479        and were modified.
2480    o autodiff: checkpoint_lev...
2481      - updated storing for bulk formulae (some arrays were missing)
2482      - added state for seaice package
2483      - synchronized with main branch
2484    o DIVA:
2485      Modif.s in
2486      - the_main_loop.F
2487      - the_model_main.F
2488      and added cost_final_restore.F cost_final_store.F
2489      o With these changes, it is possible to fully separate
2490        the first forward run to compute the cost function (mdthe_main_loop)
2491        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2492        into separate model executions.
2493        This enables better tuning of DIVA to given queue sizes.
2494      o Loss of cost function value in consecutive DIVA runs is
2495        fixed by storing to 'costfinal' file.
2496      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2497        beginning/end of adjoint integration is accounted for.
2498      The current changes apply to TAF-1.4.26.
2499      TAF has one remaining bug, requiring one manual change
2500      (see MITgcm manual).
2501    o cal: synchronized between MAIN and ecco-branch
2502    
2503    checkpoint48i_post
2504    o Changes to restore differentiability of code w.r.t. previous tag
2505      (mostly adding new routines to make list and replacing
2506      pressure by totPhiHyd).
2507    o Updated and merged grdchk package
2508      - has both ADM and TLM checks
2509      - works for single- and multi-proc.
2510      - output cleaned
2511      - worked successfully for parallel DIVA
2512    o genmake:
2513      - Adding -platform=SP4
2514      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2515    o Modif. for DIVA:
2516      ctrl_unpack should not be called in intermediate DIVA interval.
2517      (similar thing would apply for active files such as
2518      tbar, sbar, psbar, which should not be reinitialised;
2519      only relevant for ecco-branch)
2520    
2521    checkpoint48h_post
2522    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2523    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2524    o Added SEAICE_initialHEFF to pkg/seaice
2525    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2526    
2527    checkpoint48g_post
2528    --- EOS:
2529    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2530      store total Potential in totPhyHyd for diagnostics & EOS.
2531    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2532    --- Pressure/geopotential gradient:
2533    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2534    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2535      ( changes results of global_ocean_pressure )
2536    o NLFS + z-coord.: add eta*Rho' contribution.
2537    o accurate phiHyd when using interface-W at the middle between 2 centers
2538     ( changes results of ideal_2D_oce )
2539    o includes r* 2nd term in potential gradient.
2540    
2541    checkpoint48f_post
2542    Merging from release1_p12:
2543    o Modifications for using pkg/exf with pkg/seaice
2544      - improved description of the various forcing configurations
2545      - added basic radiation bulk formulae to pkg/exf
2546      - units/sign fix for evap computation in exf_getffields.F
2547      - updated verification/global_with_exf/results/output.txt
2548    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2549      (SBO) core products, including oceanic mass, center-of-mass,
2550      angular, and bottom pressure (see pkg/sbo/README.sbo).
2551    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2552      to avoid negative values in shallow regions.
2553      - updated verification/natl_box/results/output.txt
2554      - updated verification/lab_sea/results/output.txt
2555    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2556    o Added useSingleCpuIO option (see PARAMS.h).
2557    o Updated useSingleCpuIO option in mdsio_writefield.F to
2558      work with multi-field files, e.g., for single-file pickup.
2559    o pkg/seaice:
2560      - bug fix in growth.F: QNET for no shortwave case
2561      - added HeffFile for specifying initial sea-ice thickness
2562      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2563    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2564      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2565    o pkg/seaice:
2566      - adjoint-friendly modifications
2567      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2568    
2569    checkpoint48e_post
2570    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2571    o dynamics: change definition of computational domain & adapt mom_fluxform
2572      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2573    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2574        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2575        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2576        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2577        inverted_barometer solid-body.cs-32x32x1
2578      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2579    
2580    checkpoint48d_post
2581    o in preparation for r*:
2582     a) use pre-computed gradient of hydrostatic potential:
2583        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2584     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2585        => affects results of glob_oce_pressure (different truncation error)  
2586      update output.txt of ideal_2D_oce & global_ocean_pressure
2587    
2588    checkpoint48d_pre
2589    o in preparation for r*:
2590      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2591      pass the 2 comp. of the grad. as arguments to momentum S/R.
2592      but for the moment, only used if it does not change the results.
2593    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2594    
2595    checkpoint48c_post
2596    Modifications in treatment of initial flux forcing controls
2597    to avoid extra storing of flux fields.
2598    
2599    checkpoint48c_pre
2600    o Added tidal_basin_2d experiment (currently 1D!)
2601    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2602    
2603    checkpoint48b_post
2604    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2605     (modification to pressure gradient not yet implemented)
2606    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2607      (for U & V) that are used for vertical advection of momentum.
2608    
2609    checkpoint48a_post
2610    o In preparation for r*, use temp. array to compute vertical transport
2611       in flux-form momentum pkg. => change results of few test-exp.
2612      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2613                        lab_sea, natl_box & plume_on_slope
2614    
2615    checkpoint48
2616    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2617    
2618    checkpoint47j_post
2619    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2620    o moved adexch from forward_step to addummy_in_stepping
2621    o added exch in ctrl_map_...
2622    o aveFreq.=0. at end of cost_final to avoid overwrite in
2623      reverse checkpointing loop
2624    o Yet more changes in gmredi:
2625      * adgmredi_calc_tensor
2626        avoiding all recomputation of gmredi_slope_limit
2627      * adgmredi_x/y/rtransport
2628        added flag for excessive storing to avoid recomp. of
2629        u/v/rtans, dTdx/y/z
2630        -> this is not really necessary and very memory-consuming
2631      * adgmredi_slope_psi:
2632        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2633      * gmredi_slope_limit
2634        re-activated full calculation of taperfct for case 'ac02'
2635    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2636    
2637    checkpoint47i_post
2638    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2639    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2640      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2641    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2642    o gmredi: fix few bugs.
2643    
2644    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2645    This will be a good checkpoint to plug into the ecco-branch.
2646    o few modif.'s to get latest version adjointed
2647      (mainly kick out code in ini_linear_phisurf)
2648    o modif's to run adjoint with exactConserv
2649    o case GM_BOLUS_ADVEC should be cleaned
2650      S/R gmredi_slope_psi should be cleaned
2651    o verification/carbon now has exactConserv=.TRUE.
2652    
2653    checkpoint47g_post
2654    o time-average AIM output: becomes independent from statvars time-average
2655      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2656    o After TAF bug fix:
2657      Tested adjoint of gmredi package.
2658      Tests were done with checkpoint47 rather than with latest
2659      checkpoint47f_post since the latter is broken for the adjoint
2660      verification/carbon/ contains both ADM and TLM gradient checks.
2661    Here they are, before they get changed/lost/stolen.
2662    Mostly modif.'s to fix numerical sensitivities.
2663    Gradient checks OK for
2664    - GM_taper_scheme:
2665      * clipping
2666      * ac02
2667      * linear
2668      * glw91
2669      * dm95
2670      * ldd97
2671    - GMREDI_OPTIONS:
2672      * GM_VISBECK_VARIABLE_K
2673      * GM_NON_UNITY_DIAGONAL
2674      * GM_EXTRA_DIAGONAL
2675      * GM_BOLUS_ADVEC
2676    in conjunction with data.gmredi parameters to be checked in
2677    in a few minutes under verification/carbon/code/
2678    
2679    checkpoint47f_post
2680    Merging from release1_p10:
2681    o modifications for using pkg/exf with pkg/seaice
2682      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2683        and SEAICE_EXTERNAL_FLUXES
2684      - pkg/exf CPP options EXF_READ_EVAP and
2685        EXF_NO_BULK_COMPUTATIONS
2686      - usage examples are Experiments 8 and 9 in
2687        verification/lab_sea/README
2688      - verification/lab_sea default experiment now uses
2689        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2690    
2691    checkpoint47e_post
2692    o created a tag prior to creating a branch
2693    
2694    checkpoint47d_post
2695    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2696      at the bottom boundary had an erroneous half slip boundary condition
2697    o added bottom drag and no slip boundary condition capabilities to
2698      oceanic pressure coordinates code
2699    o added new verification experiment global_ocean_pressure, this experiment is
2700      also described in the tutorial section of the manual
2701    checkpoint47d_pre
2702    
2703    checkpoint47c_post
2704    o Added a verification experiment for a global cubed-sphere ocean run
2705      -  verification/global_ocean.cubed32x32x30
2706      -  uses pkg/therm_seaice and pkg/bulk_forcing
2707    
2708    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2709    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2710      when using P-coordinate; only implemented for atmospheric config.
2711    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2712      NOTES: requires option NONLIN_FRSURF to be "#define".
2713    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2714    
2715    checkpoint47b_post
2716    Merging from release1_p9:
2717    o pkg/seaice
2718      - removed GOTO's and added taf directives
2719      - double precision constants to reduce the g77 (Linux)
2720        to F77 (SGI) differences reported in release1_p8
2721    o tools/genmake
2722      - added SGI options
2723    o verification/testscript
2724      - updated to that of checkpoint47a_post
2725    o verification/global_ocean.90x40x15/input/eedata
2726      - modified for SGI f77 compatibility
2727    o verification/lab_sea
2728      - added description of sea-ice model
2729      - added missing matlab routines
2730      - added test of thermodynamics parallelization
2731    
2732    checkpoint47a_post
2733    o new pkg: aim_v23
2734     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2735       for now, keep the same surface forcing as before.
2736     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2737     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2738     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2739    o add diagnostic of surface correction term in monitor output
2740    
2741    o bulk_force and therm_seaice
2742    - Two packages:  bulk_force (Bulk forcing)
2743      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2744    - Earlier integration from Stephaine Dutkiewicz
2745      and Patrick Heimbach.
2746    - Two ifdef statements for compile time,
2747       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2748    
2749    checkpoint47
2750    differentiable version of checkpoint46n_post
2751    o bug fix in quasihydrostaticterms
2752    o * "clean" adjoint code (in terms of extensive recomputations)
2753        can now be obtained for all GMREDI options (i.e. for
2754        - GM_VISBECK_VARIABLE_K
2755        - GM_NON_UNITY_DIAGONAL
2756        - GM_EXTRA_DIAGONAL
2757        - GM_BOLUS_ADVEC )
2758      * However, wrong gradient check problem remains unsolved.
2759      * New CPP options have been introduced for different
2760        tapering schemes
2761    o external_fields_load now part of differentiation list
2762    o pressure needs multiple storing;
2763      would be nice to have store_pressure at beginning or
2764      end of forward_step, e.g. by having phiHyd global (5-dim.)
2765      (NB: pressure is needed for certain cases in find_rho,
2766      which is also invoked through convective_adjustment).
2767    o recomputations in find_rho for cases
2768     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2769    o #define ATMOSPHERIC_LOADING should be differentiable
2770    o ini_forcing shifted to begining of initialise_varia
2771    o Incorporating QNVS line search routines into MITgcm
2772      (this is separate code, and therefore not under pkg)
2773      lsopt/, optim/
2774    o Updated verification/carbon/
2775      - #define GM_VISBECK_VARIABLE_K
2776      - GM_taper_scheme    = 'ldd97'    
2777    
2778    checkpoint46n_post
2779    Merging from release1_p8:
2780    o verification/natl_box:
2781      updating new external_fields_load routine
2782    o New package: pkg/seaice
2783      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2784      The sea-ice code is based on Hibler (1979-1980).
2785      Two sea-ice dynamic solvers, ADI and LSR, are included.
2786      In addition to computing prognostic sea-ice variables and diagnosing
2787      the forcing/external data fields that drive the ocean model,
2788      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2789      The implied surface heat flux is then stored in variable
2790      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2791      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2792      non-local transport term.  Because this call precedes model
2793      thermodynamics, temperature under sea-ice may not be "exactly" at
2794      the freezing point by the time theta is dumped or time-averaged.
2795      N.B.: fairly large differences in accuracy occur across
2796            different platforms/compilers; comparison between
2797            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2798            generated output gives:
2799       T           S           U           V
2800      C D M    c        m  s        m  s        m  s        m  s
2801      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2802      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2803      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2804    
2805      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2806    o GAD:
2807      - generated new common blocks to account for call of
2808        same gad routines with differing traceridentities
2809        (needed to modify tracerIdentity indices in GAD.h)
2810      - generated separate common blocks for case useCubedSphereExchange
2811        (Department of Futurology)
2812      - parameter lists to gmredi_?transport: added tracerIdentity
2813      - added new key indices to tamc.h
2814    o external_fields_load:
2815      - added this routine to TAF list
2816      - needed to make some common blocks global and additional storing
2817        along the same lines as exf package (checkpoint_lev?_directives.h)
2818    o exf:
2819      updated external forcing package
2820      - bug fixes carried over from ecco-branch
2821        (missing OBCS_OPTIONS.h in two routines)
2822      - enable easy to use "no forcing".
2823      - added exf I/O for atmospheric loading
2824      - added exf I/O for runoff data
2825      - transfered scaling between exf <-> MITgcm to exf namelist
2826    o Adding new verification experiment global_with_exf.
2827      This verification experiment is almost identical to the
2828      global_ocean.90x40x15 experiment, except that it uses
2829      the exf (and cal) package instead of the
2830      external_fields_load routine (cf README file).
2831    
2832    checkpoint46m_post
2833    o modified testscript to return -- when there are no lines of "%MON" output
2834    o added new flag "quasiHydrostatic" for QH mode
2835      and new routine quasihydrostaticterms()
2836    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2837      New routine: mom_u_coriolis_nh()
2838    o fixed sign of non-hydrostatic metric terms in u and v equations.
2839      Depend on correct sign of gravitySign.
2840    o added work.pc* to .cvsignore in aim directories using ifc
2841    o introduced flag for controllin non-hydrostatic metric terms
2842    o removed gravitySign from PARM04
2843    o switched to g77/ifc from pgf77 in aim experiments
2844    
2845    checkpoint46l_post
2846    o made convective adjustment work with pressure coordinates:
2847     - changed the direction of k-loop in convective_adjustment.F for the
2848       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2849     - adjusted the reference pressure k-index in convective_adjustment.F
2850     - adjusted the convection condition in convect.F (in analogy to
2851       calc_ivdc.F)
2852     - convective_adjustment no longer computes anything on the halos
2853     - removed the warnings about negative salinity from find_rho.F and
2854       find_alpha.F; instead the new routine look_for_neg_salinity, called
2855       at the beginning of find_rho, find_alpha, and find_beta, does a
2856       check of the entire slice, if CPP-option
2857       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2858    checkpoint46l_pre
2859    
2860    checkpoint46k_post
2861    o fixed the verification/global_ocean.90x40x15 experiment:
2862     - new bathymetry (the world according to A., JMC, and M.)
2863     - new initial fields and forcing fields (*.bin files)
2864     - new POLY3.COEFFS (for the next release one should switch to a full
2865       equation of state: JMD95P or MDJWF)
2866     - fixed several errors and redundancies in the data file
2867     - experiment uses looped cells
2868     - added matlab directory with diagnostic scripts for plotting of output
2869    
2870    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2871     - read AIM physics parameters from a file (data.aimphys)
2872     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2873    
2874    checkpoint46j_post
2875    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2876    o move wVel computation at the end of the time step, in S/R integr_continuity
2877    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2878    o update timeave pkg for wVel diagnostic.
2879    checkpoint46j_pre
2880    
2881    checkpoint46i_post
2882    o Clean up AIM package (and keep the results unchanged):
2883      include CPP_OPTION and use IMPLICT NONE in all routines ;
2884      declare all the variables _RL ; use _d 0 for all numerical constants.
2885      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2886    
2887    checkpoint46h_post
2888    o cleaned up the use of rhoNil and rhoConst.
2889      - rhoNil should only appear in the LINEAR equation of state, everywhere
2890        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2891        and the dynamical equations are all divided by rhoConst
2892    o introduced new parameter rhoConstFresh, a reference density of fresh
2893      water, to remove the fresh water flux's dependence on rhoNil. The default
2894      value is 999.8 kg/m^3
2895    o cleanup up external_forcing.F and external_forcing_surf.F
2896      - can now be used by both OCEANIC and OCEANICP
2897    checkpoint46h_pre
2898    
2899     Added code to convert surface volume flux (fresh water) into
2900     a mass flux when using P coordinates in the ocean (OCEANICP).
2901     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2902    
2903    checkpoint46g_post
2904    o Include a new diagnostic variable phiHydLow for the ocean model
2905      - in z-coordinates, it is the bottom pressure anomaly
2906      - in p-coordinates, it is the sea surface elevation
2907      - in both cases, these variable have global drift, reflecting the mass
2908        drift in z-coordinates and the volume drift in p-coordinates
2909      - included time averaging for phiHydLow, be aware of the drift!
2910    o depth-dependent computation of Bo_surf for pressure coordinates
2911      in the ocean (buoyancyRelation='OCEANICP')
2912      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2913        Theta, Salinity, and Pressure in the parameter list. This routine is
2914        presently contained in find_rho.F. This routine does not give the
2915        correct density for 'POLY3', which would be a z-dependent reference
2916        density.
2917    o cleaned up find_rho
2918      - removed obsolete 'eqn' from the parameter list.
2919    o added two new verification experiments: gop and goz
2920      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2921    checkpoint46g_pre
2922    
2923    checkpoint46f_post
2924    o Enable tangent linear (forward mode) gradient checks:
2925      - extended active file handling to g_... files
2926      - added TANGENT_SIMULATION to theSimulationMode
2927      - extended grdchk package accordingly
2928    o added tangent linear setup in verification/carbon/code_ftl
2929    o added adjoint setup in verification/front_relax/code_ad
2930    
2931    checkpoint46e_post
2932    o Added new equation of state -> MDJWF
2933      - EOS of McDougall et al., 2002, JAOT, submitted
2934      - caveat: the equation of state is only valid for a smaller (more
2935        realistic?) range of values than JMD95P/Z and UNESCO
2936      - added masks to the calculation of pressure in store_pressure
2937      - added more check values for density in check_eos (ini_eos.F), some of
2938        the old check values are out of the range of the MDJWF-eos, so don't
2939        expect perfect matches for those
2940    checkpoint46e_pre
2941    
2942    checkpoint46d_post
2943    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2944      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2945      case of pressure coordinates. eosType='JMD95Z' in
2946      combination with buoyancyRelation='OCEANICP' now causes an error.
2947    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2948      in find_alpha/beta.
2949    checkpoint46d_pre
2950    
2951    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2952      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2953    
2954    checkpoint46c_post
2955    o Changes necessary for ocean in p-coordinates
2956     -  Added new buoyancy relation = 'OCEANICP'
2957     -  Added new parameters = gravitySign (this used to be contained inside
2958        the factor dRdZ which I added when we first switched to R coordinates).
2959     X GM/Redi is not compatible (yet)
2960     X bottom drag and no-slip need to be debugged.
2961    checkpoint46c_pre
2962    
2963    checkpoint46b_post
2964    o Added new equation of state -> JMD95Z and JMD95P
2965      - EOS of Jackett and McDougall, 1995, JAOT
2966      - moved all EOS parameters into EOS.h
2967      - new routines ini_eos.F, store_pressure.F
2968    o Added UNESCO EOS, but not recommended because it requires
2969      in-situ temperature (see JMD95)
2970    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2971      unesco.f to be used with POLY3
2972    checkpoint46b_pre
2973    
2974    checkpoint46a_post
2975    o Added (atmospheric) pressure loading
2976      - new field in FFIELDS.h, etc...
2977      - new cpp flag ATMOSPHERIC_LOADING
2978    o Changed hFacC to _hFacC in calc_phi_hyd.F
2979    o Added SHORTWAVE_HEATING to some files for consistency
2980    checkpoint46a_pre
2981    
2982    checkpoint46
2983    further merges from release1_p5
2984    o new ctrl package
2985      - adopted from ECCO environment to enable optimization
2986      - added Eliassen Palm fluxes to controls
2987    o added Eliassen Palm flux controls to gradient check package
2988    o cost package
2989      - Compatible with new ctrl package
2990      - added Eliassen Palm cost hooks
2991      - modif's of existing cost functions
2992    o Adjoint-related bug fixes in kpp:
2993      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2994      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2995    o autodiff package
2996      - flow directives:
2997        + new for S/R do_the_model_io
2998        + enhanced for S/R checkpoint
2999        + new gmredi.flow
3000      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3001        disable adcommon.h/g_common.h by default.
3002      - fixed problem for adjoint of global_max
3003    o modified verification/carbon/
3004    o New setup for adjoint of global_ocean
3005    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3006    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3007    o incorporated hooks for sponge layer code (external_forcing.F)
3008    
3009    checkpoint45d_post
3010    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3011  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3012    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3013    o add new parameter deltaTfreesurf for free-surface time stepping
3014    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3015  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3016  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3017  o add new flags:  o add new flags:

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