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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.862 by jmc, Tue Aug 21 14:39:43 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    checkpoint59f
8    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
9    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
10      a bounded range (in forward mode)
11    o pkg/ecco, ctrl, autodiff and mom_common:
12     internal parameter controls, completements of implementations
13    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
14    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
15      (not seem any difference in testing results).
16    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
17       at face corners.
18    o pkg/generic_advdiff:
19     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
20      loop range indices for computing vertical advection tendency
21      and do the calculation in the interior only (no overlap) ;
22      for now, only implemented for SOM advection (to save CPU time).
23     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
24    o exch2 adjoint
25      First set of changes:
26      - add exch2 hand-written adjoint templates
27      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
28        This will require cleanup in pkg/autodiff/*.F
29        (changed routines currently kept separate in verif. code/)
30      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
31        that used to hide exch2 or cubed-sphere specific code
32        (commented via 'cph-exch2')
33    o pkg/seaice
34      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
35    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
36       output of global_ocean.cs32x15.thsice .
37    
38    checkpoint59e
39    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
40      for B-grid vector (not yet tested) and C-grid vector (<- only used
41      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
42    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
43      (#ifdef ALLOW_SALT_PLUME)
44    o gather_2d/scatter_2d: removed halo regions
45    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
46      scheme and the corresponding test case (under front_relax dir). For now,
47      only available with Skew-flux form and not yet tested in realistic set-up.
48      adjoint: store directives updated, but gradient checks deteriorated,
49      so maybe GM/Redi adjoint is now broken.
50    o seaice adjoint
51      * add AREA, HEFF, HSNOW as control variable
52        (should not change lab_sea results)
53      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
54    o pkg/seaice:
55      * added computation of saltFlux in seaice_growth;
56        For time being, sea ice salinity is assumed constant
57        contribution of snow flooding to freshening of sea ice is neglected.
58        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
59        defaults to 0.0 in order to maintain backward compatibility.
60        Typical values for SEAICE_salinity are 4 to 10 g/kg.
61      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
62      * added SEAICE_availHeatFrac, which specifies fraction of surface level
63        heat content used to melt or grow ice
64      * commented out cap of HICE: it helps keep ice thinner
65      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
66      * applied OBCS T/S mask to HEFFM sea ice mask
67    
68    checkpoint59d
69    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
70     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
71     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
72    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
73     and change default value of parameter "GM_Small_Number";
74     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
75       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
76       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
77    o pkg/ecco: cost function when applying pkg/smooth to controls
78    o pkg/ctrl: add forcingPrecond run time parameter
79    o pkg/seaice:
80     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
81     - fix bug in metric terms of u-equation in LSR solver (implicit part),
82       changes verification/lab_sea
83     - rearrange implicit part of u-equation in LSR solver to make it easier to
84       read, understand, and debug. This causes changes at the truncation level.
85     - fix (serious) bug in the boundary conditions (sign error in the implicit
86       part) of the LSR solver. Changes all LSR results.
87     - fixed problem with HSNOW initialization to avoid thick snow when AREA
88       is initilized with small values - does not change lab_sea results.
89     - added HsnowFile initialization capability
90    o pkg/smooth: addition to model/src and pkg/ctrl so allow
91     initialization of pkg/smooth and application to control vector
92    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
93    o dependencies: pkg/profiles requires pkg/cal
94    o pkg/profiles:
95     - added option ALLOW_PROFILES_GENERICGRID
96         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
97         that interpolation information (grid points and coefficients) is provided
98         within the netcdf input files.
99         -> sample matlab scripts can be found in MITgcm_contrib/gael
100         that allow you to prepare netcdf input files.
101     - also modified: cleaner include statements, cleaner error print statements,
102       cleaner stops when error, and more tests of the netcdf input files consistency.
103    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
104    o pkg/seaice:
105     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
106       requires a new routine: seaice_diagnostics_fill.F
107     - make sure that seaice does not move if not forced (pressure replacement
108       method, Hibler and Ip, 1995), changes results
109     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
110     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
111       It is turned off by default (=-1.), because it changes the results.
112     - make it possible to read AREA from a file, too.
113    
114    checkpoint59c
115    o add S/R and diagnostics for oceanic mixed-layer depth
116    o move GMRedi call after all vertical mixing schemes (including KPP)
117    o pkg/thsice:
118     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
119      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
120    o pkg/obcs:
121     - bug fix for balance code
122    o pkg/seaice:
123      - allow values of SEAICE_elasticParm > 1
124      - add new parameter SEAICE_evpTauRelax as an alternative
125        to SEAICE_elasticParm
126      - make lsr boundary conditions free slip (by default), changes result
127      - add code for no slip boundary conditions for lsr
128      - set minimum of zeta to zero (and not 4e8) (changes results)
129      - add a cap on AREA after advecting AREA if seaice_growth is not called
130    o change calculation of Visbeck K:
131      - no longer depend on tapering scheme; instead, compute slope (limited
132        by GM_maxSlope). this is equivalent to what was comuted before with
133        clipping or linear tappering.
134      - fix vertical averaging (wrong by 1/2 level)
135      - leave the old version (but will not be maintained) within
136        #ifdef OLD_VISBECK_CALC / #endif
137      - update output of exp. ideal_2D_oce
138    o change error catch in calc_r_star to improve vectorization
139    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
140      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
141    o adjoint:
142      Re-organized adjoint checkpointing according to Matt Mazloff
143      (but with modifs/completions/cleanups)
144      Storing is now bundled into large arrays to optimized I/O
145      (and second step in cleanup of the_main_loop)
146    
147    checkpoint59b
148    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
149      - export/import (between ocean & coupler) fields needed for ocean DIC.
150    o pkg/seaice:
151      - get rid of three more exchanges seaice_calc_viscosities (required
152        different loop boundaries in seaice_lsr and seaice_ocean_stress)
153      - bug fix in seaice_ocean_stress (update of lab_sea required)
154      - reduce loop boundaries to necessary minimum also in seaice_evp
155      - go back to the old way of computing deltaC/Z as the adjoint likes that
156        better
157    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
158      passive tracer to an Age Tracer) + update output.txt
159    o pkg/exf:
160      - implement A-grid / C-grid selection for wind-stress input files.
161      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
162      for now, in exf_bulk_largeyeager04.F only :
163      - change implementation for case where windspeed + 2. components wind-stress
164        are read-in. AND use rhoConstFresh to convert evap.
165    o pkg/seaice:
166      - use correct EXCH_UV for wind-forcing (on A-grid).
167      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
168        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
169    o pkg/exf:
170      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
171      EXF_INTERPOLATION:
172      - merge global_with_exf/code version of exf_interp_read.F
173        to the main code ;
174      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
175        reading the file ; Important: This options needs to be defined to recover
176        previous code.
177        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
178      - no longer loose real*8 precision along the way when using exf_iprec=64.
179    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
180      - change discretisation of evp-solver in order to avoid another exchange
181        (changes lab_sea) and clean up a little
182      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
183        help the adjoint (this also changes the results slightly)
184      - add a few "_d 0" where they had been missing in seaice_evp.F
185      - cleaning up: remove unused seaice_calc_rhs.F
186    o pkg/exf: some cleaning-up:
187      - change various "constants" into runtime parameters
188      - cleaned-up Large&Yeager04 routine which should eventually
189        replace exf_bulkformulae.F (changed names of S/R and CPP)
190        and merged various ALLOW_ATM_WIND options
191     only used with thsice pkg (in thsice_get_exf.F):
192      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
193        which are used when useStabilityFct_overIce=TRUE (= the default)
194      - change default values of ice & snow emissivity and scale downward LW
195        by ice & snow emissivity.
196    o pkg/thsice:
197     fix few little problems, in thsice_calc_thickn.F:
198      - growth vertically (and not laterally) if iceFrac == iceMaskMax
199      - melt only laterally if hIce < hThinIce (as the comments say)
200      and in thsice_extend.F:
201      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
202      - start to form ice as soon as the minimum ice-volume is reachable.
203     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
204      and cpl_aim+ocn
205    o pkg/kpp
206     - move computation of surface related input fields to KPP into a new
207       subroutine kpp_forcing_surf.F
208     - remove wrong (within bi,bj loops) EXCH calls.
209     - little cleaning (add argument myThid in last position, cvs header ...)
210     - for now, fix conservation problem by exchanging KPPviscAz (may not
211       be the best fix)
212    o pkg/seaice
213     - check for inconsistent evp parameter/cpp-flag combination
214     - remove leftover errIO flat for obsolete name list error handling
215    o OpenAD
216     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
217    
218    checkpoint59a
219    o pkg/seaice: some parameter clarifications and a little bit of clean up
220    o pkg/thsice: rename run-time parameters:
221       himin       -> hIceMin
222       himin0      -> hThinIce
223       hihig       -> hThickIce
224       i0          -> i0swFrac
225       transCoef   -> bMeltCoef
226       frac_energy -> fracMelting
227      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
228       with default values (for now) that do not change the results.
229      remove old version of thsice vars advection in pkg/seaice.
230    o in FFIELDS.h:
231      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
232      - make pLoad & sIceLoad always available (but still only used if
233         ATMOSPHERIC_LOADING is #define).
234    o pkg/kpp: replaced _KPP_RL with _RL
235    o bug fixes for vertical diffusivity computations when both KPP and
236        3D diffusivity arrays are used.
237    o pkg/seaice: fix bug in evp solver, while doing that
238      - change (improve?) discretization of stress computations for both
239        cgrid-lsr and evp solver
240      - add a new routine to compute strain rates
241      - the above changes lab_sea results
242      - add no slip conditions for evp solver (off by default), lsr-version
243        may follow
244      - fix exchange for shear at Z-points (does not change lab_sea)
245      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
246        (to force the user to pick a time step since there is not "safe" way
247        of choosing it)
248      - add principal stress diagnostics
249      - rearrange fields for evp a little to avoid having to call a: too many
250        exchanges and b: exchanges for stress trensor components which we do
251        not have.
252      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
253        of evp, complete rewrite for lsr case (latter is does not yet work
254        in all cases)
255    o pkg/kpp: add code to have mixing in shelf ice caverns
256      - add myThid to all kpp routines (long overdue)
257    
258    checkpoint59
259    o pkg/exf:
260      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
261        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
262      - move exf header files from lower_case.h to UPPER_CASE.h ;
263        add missing cvs Header & Name
264      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
265      - add namelist param. selectStressGridPosition, exf_monFreq
266      - retire many _CLIM routines, and remove data.exf_clim
267        + params moved to data.exf
268        + climsst, climsss now handled by exf_set_gen, i.e.
269          climss?period=0 refers to constant field,
270          climss?period=-12 to monthly forcing
271      - split up namelists in data.exf
272    o pkg/seaice:
273      - remove seaice_exch and seaice_exch_uv
274      - remove superfluous exchange of theta
275      - add myThid to seaice_budget_ocean/ice
276      - add new interface for atmospheric wind forcing (C-grid only)
277        + new routine
278        + two new field (taux, tauy for stress over ice)
279        + removed one global field (DAIRN) for C-grid case only
280    o pkg/thsise
281      - 2nd set of modifs for thsice adjoint in conjunction with exf
282    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
283    
284    checkpoint58y_post
285    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
286      vertical diffusivity, similar to that in MOM4; turned on using
287      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
288      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
289    o Added capability for 3D specification of background vertical diffusion
290      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
291      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
292      "data" file that contains the 3D vertical diffusivity coefficients.
293    o ice dynamics (pkg/seaice) with thsice thermodynamics:
294      - add code within pkg thsice to advect & diffuse sea-ice fields
295      similar to (and will replace) what has been added in  seaice_advdiff.F,
296      but: - conserving Mass, Heat & Salt.
297           - better when using non-linear advection scheme (not yet fully tested)
298           - can also be used in atmospheric set-up (for now, only the diffusion).
299    
300    checkpoint58x_post
301    o IO option for global-file compact format:
302      - add options when generating topology (utils/exch2/matlab-topology-generator)
303      - add I/O capability (pkg/mdsio).
304      - adapt utils/matlab/rdmds.m to read this format.
305      for now long-line format not yet supported by pkg/mdsio (& exch2).
306    o shelfice: add a few diagnostics
307    
308    checkpoint58w_post
309    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
310      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
311      (and replace horiVertRatio in NH code).
312      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
313                         and tutorial_plume_on_slope (sensitive to truncation)
314    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
315      directly to drive seaice model (C-grid only)
316    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
317     - reintroduce computation of wind from stress,
318     - compute tau (in exf_bulkformulae.F) from windstress averaged to
319       mass points to avoid tau = 0
320     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
321    o rdmnc.m: make it work with "global" files created with gluemnc
322    o rdmnc.m : some improvements in dealing with singleton dimension
323      (tested on all testreport mnc output files).
324    o genmake2: disable pkg/profiles if netcdf test fails.
325    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
326    o move call to cal_readparms up to make calendar parameters/variable available
327      to all packages
328    
329    checkpoint58v_post
330    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
331      useDynP_inEos_Zc tested.
332    o pkg/exf: changes to properly interpolate/mask/scale initial fields
333    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
334      and portions thereof.  See read_cs.txt for description and examples.
335    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
336      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
337      following the great-circle arc between those 2 points.
338    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
339      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
340    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
341     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
342     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
343     - still needs work (not working with some options ; efficiency to improve)
344       and serious testing.
345     - use this scheme for temperature & salinity in 2 advection test exp.:
346       advect_xy & advect_xz, respectively.
347    
348    checkpoint58u_post
349    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
350    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
351    o testreport: add option "-skipdir" to skip some test.
352    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
353      momentum calculation.
354    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
355    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
356      remove checkpoint.F and the_correction_step.F (no longer used);
357      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
358    o add option (linFSConserveTr) to correct for tracer source/sink due to
359      Linear Free surface
360    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
361    o pkg/thsice: fix reading mnc-pickups
362    
363    checkpoint58t_post
364    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
365    o pkg/mdsio:
366     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
367       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
368       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
369     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
370     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
371       either MDS_READ_FIELD or MDS_WRITE_FIELD )
372     - new S/R (to replace MDSWRITEMETA), which allows to write more
373       informations (variable names, time ...) to meta files.
374     - modify rdmds.m to give back the meta file content.
375    o pkg/diagnostics: change vertical interpolation to be safer, and more
376       flexible (define p-levels to interpolate to in data.diagnostics);
377      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
378       diagnostic pointer.
379    o pkg/seaice: more cleaning up of seaice_growth, added many comments
380    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
381    o fix multi-category seaice:
382     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
383       SEAICE_MULTICATEGORY
384     - fix short wave heat flux
385    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
386       and allow to use EVP solver. Change forward lab_sea: test both EVP
387       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
388    o Initial check-in of lab_sea adjoint
389      (very similar to natl_box_adjoint/code_seaice)
390      * used C-grid and EVP solver
391      * used KPP, GM/Redi
392      * uses inAdExact=.TRUE.
393      * gradient checks fail for both ADM and TLM
394        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
395        f.d. gradients actually seem more problematic than ADM, TLM gradients;
396        issue is related to forward mismatch between g77 an ifort
397    o pkg/seaice: overhaul of thermodynamics
398     - growth.F and groatb.F are replaced by new routine seaice_growth.F
399     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
400     - move a few global fields out of SEAICE.h into seaice_growth.F and
401       make them 2D (FICE/QNETO/ ...)
402     - remove FO (it is the same as QNETO)
403     - introduce a few local fields to avoid modifying external fields such
404       as atemp, etc.
405    
406    checkpoint58s_post
407    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
408      changed exf_set_gen.F so that
409        genperiod=0 means input file is one time-constant field and
410        genperiod=-12 means input file contains 12 monthly means
411    o CG2D: use pre-computed solver main-diagonal (stored in common block);
412      this affects truncation error ; generate new output file for exp. which
413      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
414        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
415        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
416        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
417        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
418        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
419    o start implementation of deep-atmosphere and anelastic formulation
420    o verification: remove 2nd copy of input files and use script "prepare_run"
421      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
422    o mom_common/vecinv/fluxform: fix a few initialisation isssues
423    o profiles: fix for multithreaded case
424    
425    o diagnostics: rename few diags:
426      s/'PRESSURE'/'RCENTER '/g
427      s/'TICE    '/'oceFreez'/g
428      s/'TAUX    '/'oceTAUX '/g
429      s/'TAUY    '/'oceTAUY '/g
430      s/'SWFLUX  '/'oceQsw  '/g
431      s/DIFx/DFxE/g
432      s/DIFy/DFyE/g
433      and add few ocean-forcing diagnostics:
434      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
435    o modifications to pkg/seaice/growth.F and budget.F, which change results of
436      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
437      as actual snow thickness.  It now refers everywhere to effective snow
438      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
439    
440    checkpoint58r_post
441    o modifications to pkg/seaice/growth.F, which change results of
442      lab_sea experiment: fixes pertain to melting snow over open water, to
443      masking EVAP under sea ice, and to using the correct AREA variable for
444      computations of EVAP, PRECIP, HSNOW, and GHEFF
445    o add ability to read bathy, salt, and theta using MNC (off by def)
446    o add flooding algorithm and advection of HSNOW for pkg/seaice;
447      both are turned off by default and do no change any results
448    o seaice advection with pkg/thsice: a step toward the use of non-linear
449      advection scheme, but #ifdef or commented out for now (requires more EXCH).
450    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
451      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
452      in natl_box (affects results @ truncation level: update output.txt)
453    o multi-threading and IO:
454      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
455      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
456        (needed to work with SingleCpuIO): tested in all verif. exp.
457    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
458      affects the results (but none of the verification test uses this scheme).
459    o Adding some pkg/diagnostics capability to pkg/seaice
460      (will certainly be subject to changes)
461    o ctrl: adding new control variables:
462      lwflux, lwdown, evap, snowprecip, apressure, runoff
463    
464    checkpoint58q_post
465    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
466      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
467      high_res_cube configuration by 4% on Columbia.
468    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
469      add (in global_with_exf/code) a version of EXF_INTERP_READ without
470      dynamical allocation (seems to work in multi-threaded).
471    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
472      single CPU io) so that TAF does not have to see EESUPPORT.h
473    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
474    
475    checkpoint58p_post
476    o obcs: stop if obcs is used with useCDscheme = .true.
477    o shelfice:
478     - fix a sign error so that no slip at shelfice interface works
479     - remove stop for combination non-hydrostatic code and shelfice. That does
480       not mean, that the results are correct, but at least they are numerically
481       stable
482    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
483    o added adjoint exch routined for all exch*3d* routines
484      and updated flow directives
485    
486    checkpoint58o_post
487    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
488      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
489    o change controling S/R for writing pickup file (new S/R do_write_pickup)
490      and clean-up reading/writing of pickup files.
491    o fix local version of read/write pickup (NH part) in rotating_tank/code
492    o simplify EXCH interface:
493     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
494     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
495    o added the regrid package
496    o shelfice:
497     - add a simple boundary layer scheme to reduce noise
498     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
499    
500    checkpoint58n_post
501    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
502       local variable (not in common block).
503    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
504      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
505      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
506        to work with SingleCpuIO.
507    o add "_d 0" to real constant of pkg/cfc subroutines ;
508       update exp. cfc_exemple & tutorial_cfc_offline output files.
509    o multi-threading and IO:
510      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
511        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
512      - barrier before and after reading.
513      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
514      - avoid using MDS_WRITELOCAL for LAND pkg output.
515      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
516        common-block variables ; Allows multi-threading with master-thread IO.
517    o change default MAX_NO_THREADS from 32 to 4 ;
518      and stop cleanly when MAX_NO_THREADS is too small.
519    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
520    
521    checkpoint58m_post
522    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
523       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
524    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
525       keep global_ocean.90x40x15 (for AD testing) with former secondary test
526       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
527    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
528        add MITgcm_tutorials (= code + all the tutorials)
529    o ecco, option to compute cost for total ssh (mean+anom)
530    o consistent with addition of ptracer and ssh in pkg/profiles
531    o profiles: adding ptracer and ssh
532    o testreport: change multi-test output-file name
533      (from output.txt.{name} to output.{name}.txt)
534    o profiles: now ok for mutli-tiles case
535    o seaice: add 4 parameters for different advection schemes for area,
536      (effective) seaice thickness, enthalphy, and snow height. Their default
537      is the standard parameter SEAICEadvScheme
538    o calc_gw:
539     - add cosFacU in zonal viscous flux (harmonic.visc.).
540     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
541       of tutorial_plume_on_slope.
542    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
543    o calc_gw: true flux-form, account for horizontal grid spacing.
544      update rotating_tank results, but not plume_on_slope (affected at
545      truncation level, 11 digits).
546    
547    checkpoint58l_post
548    o calc_gw:
549     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
550     - remove side-drag for now (need to fix it); update plume_on_slope results.
551     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
552    o commit code to make SST/SSS weights spatially variable
553      (based on either variable in-situ or variable initial T/S weights)
554    o pkg/ecco:
555      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
556        now based on horizontally varying weights wthetaLev, wsaltLev
557      * cost_averagesflags now returns year indices in addition to day, month
558      * sflux balance is performed on annual basis
559        (sflxumm, sfluxmm2, bal_sfluxmm)
560      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
561        including separate counting and multipliers
562    o pkg/rbcs
563      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
564    
565    checkpoint58k_post
566    o testreport:
567     - always build in dir. "build" (if not there, mkdir build instead of building
568       & running in input)
569     - run in dir run (if it exists), in build otherwise.
570     - call prepare_run (if input/prepare_run exists)
571     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
572    o pkg/exf modifications to interpolation and rotation routines for more
573       reasonable treatment of North Pole singularity: for tracers North Pole
574       value is set to northernmost zonal-mean value, for zonal velocity it is
575       set to zero, and for meridional velocity it is set to northernmost value.
576    o pkg/exf/exf_check_range.F
577     - add tile index to diagnostics and move stop statement to the very
578       end of the routine.
579    o pkg/diagnostics: (diagnostics_main_init.F)
580      define title of isomorphic variables according to the current config.
581    o pkg/thsice with pkg/seaice dynamics:
582    - fix domain of computation (interior only, required for exf) and do exchanges
583    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
584    o towards a standard way of dealing with multi-threading in MONITOR
585      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
586    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
587       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
588    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
589    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
590    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
591       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
592    o tracer advection:
593     - clean-up and simplify calc_common_factors.F
594     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
595       advection subroutine (but still not used within DST advection S/R)
596    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
597    
598    checkpoint58j_post
599    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
600      from file (collects calls previously in FORWARD_STEP)
601    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
602    o adjoint store dir. adjusted accordingly
603    o genmake2
604      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
605    
606    checkpoint58i_post
607    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
608      on wind stress (SEAICEstressFactor defaults to 1.)
609    o Total number of Timers is finite (<=40): comment out 2 non-essential one
610      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
611    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
612      on CS-grid: no longer loosing mass.
613    o exf & curvilinear-grid: no longer modify longitude xC & xG.
614    o pkg/ggl90: fix sloppy output and fix a bug
615    o pkg/seaice: added SEAICEuseEVPpickup parameter
616      - Set to false in order to start EVP solver with
617        non-EVP pickup files when using SEAICEuseEVP
618      - fix sign error in diffusion in seaice_calc_rhs
619    
620    checkpoint58h_post
621    * Modifications for bottom topography control
622      o replace hFacC by _hFacC at various places
623      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
624      o add non-self-adjoint cg2d_nsa
625      o update autodiff support routines
626      o re-initialise hfac after ctrl_depth_ini
627      o works for 5x5 box, doesnt work for global_ocean.90x40x15
628    * Adding verification for 5x5 box (4-layer) bottom topography control
629    
630    checkpoint58g_post
631    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
632       used for mean seasonal cycle, mean diurnal cycle); add an example
633       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
634    o pkg/ggl90:
635      - add parameter (minimum surface kinetic energy)
636      - fix bug (avoiding division by zero)
637    o couple pkg/thsice to pkg/seaice:
638      - modify advection in seaice to accomodate new scalar fields to be advected
639      - only muliDimAdection scheme work with seaice/thsice
640      - mapping of thsice-variables to seaice-variables, back and forth
641      - does not break the verification experiments, but does not give the
642        desired results either
643    o pkg/seaice
644      - make (default) second order advection a bit less confusing?
645    
646    checkpoint58f_post
647    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
648      to pkg/seaice):
649      - new routines thsice_map_exf and thsice_get_exf provide the interface
650      - add an additional formal parameter to thsice_solve4temp
651    o pkg/exf:
652      - add new fields wspeed, snowprecip (to be able to couple to thsice)
653      - correct Stefan-Boltzmann constant
654      - new parameter for longwave surface emittance
655      - separate some stuff from exf_bulkformulae into new routines  
656        exf_radiation, exf_wind
657      - add new parameters and constants: longwave emissivity for ocean, ice
658        and snow, evaporation parameters over ice
659      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
660        either wind from stress or stress from wind
661    o pkg/thSIce:
662    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
663    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
664       and THSICE_CALC_THICKN
665    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
666    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
667      to make debugging easier.
668    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
669    o pkg/bulk_force:
670      - clean-up comments and parameters ;
671      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
672    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
673      generate new output for test-experiment: aim.5l_cs.thSI
674    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
675      testreport accordingly
676    
677    checkpoint58e_post
678    o SEAICE_CGRID adjoint done
679    o R_STAR adjoint implemented.
680      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
681      * need to sort out init. of h0facc, etc.
682    o Make pkg/profile fully independent of ecco,cost, etc. stuff
683      to be able to use it in pure forward.
684    
685    checkpoint58d_post
686    o upgrade simple test-experiment to tutorial example:
687     step.1: duplicate the experiment and (step.2) will remove the old copy.
688      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
689      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
690      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
691      tutorial_global_oce_biogeo    <- copy of dic_example
692      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
693      tutorial_plume_on_slope       <- copy of plume_on_slope
694      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
695      tutorial_global_oce_optim     <- empty for now (David ?)
696      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
697     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
698    o correct a sign problem in cost_scat.F
699    o obcs and ptracers: fix boundary conditions for advections schemes
700      with larger stencil
701    o thsice adjoint: start
702    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
703      completeness
704    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
705      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
706    o ptracers adjoint:
707      * avoid extensive recomputatations
708      * fix missing re-init. of gptr (missed by TAF)
709    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
710      me to turn off the excessive output to STDOUT that this package produces
711    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
712      and add those terms in Vector-Invariant formulation.
713    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
714      if the control period (xx_hfluxperiod etc) is 0
715    o in profiles pkg, clean routines and fix details
716    o in ecco pkg, reading ssh data:
717      fix problem in case the model does not start at iter0=0
718    o fix mnc-pickup/restart for ptracers
719    o new package prifiles:
720      code to compute profile-based cost by Gael Forget
721      (modifs in ecco, ctrl, autodiff)
722    o Benign bug fix in initialization (spotted by M. Mazloff) of
723      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
724    
725    checkpoint58c_post
726    o adjoint: finish NLFS adjoint and provide reference output in
727      verification/global_ocean.90x40x15/results_ad_nlfs
728    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
729      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
730      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
731      with SEAICE_CGRID defined.
732    o move calendarDumps from "data" to "data.cal" and clean-up the code
733      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
734    o add useEXF & useCAL flags (for now, set in hard-coded way)
735    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
736      (were missing in NH mode, and wrong in quasihydrostatic mode).
737      waiting for Chris updated version of calc_gw to add those CALLs.
738    o fix bug in quasihydrostatic S/R ;
739      add a test for this option: global_ocean.90x40x15.qshyd
740    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
741      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
742    o add on/off flag useOffLine for package OFFLINE
743    o seaice:
744      - modify advection so that it works also on the C-grid
745      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
746        problem in multi-tile runs with C-grid
747      - add flags for clipping ice velocities and/or masking solver forcing
748      - fix drag (ocean on ice) formulation and a bug that caused noise in the
749        C-grid solver
750      - added a few comments to seaice_diffusion.F
751      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
752        are now exclusive)
753      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
754        required re-ordering the code a little:
755       + make DAIRN global variable (defined in SEAICE)
756       + move computation of the viscosities eta and zeta into a new separate
757         routine (because I need to recompute them in seaice_ocean_stress.F)
758    
759    checkpoint58b_post
760    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
761      update output.txt of exp. aim.5l_cs.thSI
762    o various mnc cleanups and improvements:
763      + shrink lookup tables by factor of ~4
764      + better error reporting when running out of lookup space
765      + able to handle longer path/file names (up to 500 chars)
766    o adjoint:
767      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
768      - TBD: "hidden" mom_vecinv recomp. in dynamics
769    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
770     (allow to differentiate between forcing components using new integer flags:
771      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
772     and add new flag to put Dissipation tendency out of Adams-Bashforth.
773    o ecco
774      - enable trend removal from SSH anomaly obs.
775    o adjoint
776      - a fix for PmEpR when #undef EXACT_CONSERV
777      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
778      - try to fix "hidden" recomp. in forward_step for NLFS
779        (NLFS seems broken sometimes after I checked it in)
780    o seaice:
781     - add c-grid version of the dynamic solver:
782       + three new routines that are the c-grid substitute lsr, dynsolver
783         and ostres
784       + put a few fields that were local to dynsolver into global common
785         blocks, so that I can move the computation of stresses etc into
786         seaice_lsr (saves coding but may break the adjoint).
787     - replace more hardwired parameters by runtime parameters
788     - add ice masks that mask the rhs of the implicit solvers where there
789       is no ice (commented out in seaice_dynsolver, because i am not sure
790       if this works properly), eventually this should replace the clipping
791       of ice velocities in seaice_dynsolver to +/-40cm/s.
792    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
793      include it only where its needed
794    o move balancing of fluxes before the call of external_forcing_surf
795    o seaice:
796      - correct units of turning angles (now they are really in degrees)
797      - move computation of GWATX/Y out of main routine into dynsolver
798      - initialize GWATX/Y in seaice_init
799    o Apply mask on Fresh-Water flux (needed for SSH forcing).
800      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
801    o seaice: add runtime flags for turning angles (default to zero)
802    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
803      and trend from exf forcing and ctrl control adjustments
804    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
805      (since checkpoint57x_post)
806    o change the default rotation period to 86164.s = the Earth rotation
807    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
808      and based on a reference stratification. Tested within hs94.cs-32x32x5.
809    o seaice advection: add code for choosing between the default (2nd order
810      central differences) and multiDim advection schemes provided by
811      pkg/generic_advdiff
812    o seaice:
813      - removed all references to SEAICE_GRID.h fields from
814        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
815        (cubed-sphere configuration will change a little)
816      - grid computations in seaice_init are obsolete now.
817      - cleaned up code a little so that is easier to read (hopefully).
818      - added new (better?) discretizations of default advection and diffusion
819        (turn on with SEAICEuseFluxForm)
820      - replace 1 in 3d global fields by kSurface in growth.F
821      
822    checkpoint58a_post
823    o seaice:
824      - bug fix in advect.F
825    o shelfice:
826      - separate shelfice load anomaly from pload (breaks with time
827        dependent forcing), => introduce constant field shelficeLoadAnomaly.
828        Its default is 0., but it may be computed more cleverly from (unknown)
829        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
830        done offline. A good approximation of the pressure load anomaly is
831        necessary to avoid large initial adjustment processes underneath
832        deep-reaching shelfice.
833      - small fix in ISOMIP shelfice_thermodynamics
834      - add more sophisticated thermodynamics of Hellmer (1989), this is
835        now the default
836      - give a few constants more intuitive names
837    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
838      if bulk formulae are used in long integration (especially EmPmR). Turn
839      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
840      if balancePrintMean, the imbalance that is substracted is printed to
841      STDOUT.
842    o fix bug (typo) in obcs_apply_eta.F
843    o add a new package shelfice which enables us to model the circulation
844      underneath shelf-ice with draughts of hundreds of meters.
845     - works
846     - to do: + include improved thermodynamics
847              + check whether kSurfC (from model/inc/SURFACE.h) can be used
848                instead of new field kTopC
849              + can we use topoFile, Ro_surf and existing code in ini_depth.F
850                instead of new field R_shelfIce and new code in ini_depth.F
851                and ini_mask_etc.F?
852              + adjust vertical mixing schemes?
853    o seaice pkg:
854     - add a cpp-flag to include a simple formula for a salinity dependent
855       freezing point of sea water at the surface
856     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
857       meridional stresses are now different (and hopefully correct)
858    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
859       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
860       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
861    o pkg/diagnostics: add options and parameters for regional-statistics
862       diagnostics ; define regions by reading a region-mask from a file
863       (might add other options later)
864    o pkg/bulk_force:
865     - add option and parameters to use AIM surface-flux formulae.
866     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
867       others forcing fields (defined in PARM05, parameter file "data") are loaded
868       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
869     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
870     - use the right EXCH call for uwind,vwind (to work on CS-grid).
871     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
872       and parameters (note: calcWindStress replaces .NOT.readwindstress).
873     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
874    
875    checkpoint58
876    o add "--embed-source" option to genmake2 which, when the supporting
877      tools can be compiled (as determined by genmake2) will turn on the
878      embed_files package which then embeds the entire MITgcm source code
879      (*.[fFhc] + Makefile) used for the build within the executable
880      - requested by CNH but off by default
881      - adds a paltry <9MB to the mitgcmuv executable in most cases
882      - only writes the output when useEMBEDSRC in eedata is true
883    o clean up 3-dim. relaxation codes:
884      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
885      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
886      * Thanks to Tom Haine for testing!
887    
888    checkpoint57z_post
889    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
890      affects output (@ truncation level) of exp. plume_on_slope ; updated.
891    o fix the pickup behavior for obcs in combination with ptracers
892    o fix a bug in ptracers_external_fields_load
893    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
894      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
895    o transfered surface NH pressure to eta field (if exactConserv).
896    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
897         and update lab_sea output.txt file.
898    o completing 3-dim. relaxation code: additional term
899         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
900      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
901      * At compile time, in "EXF_OPTIONS.h" set
902          #define  ALLOW_CLIMTEMP_RELAXATION
903          #define  ALLOW_CLIMSALT_RELAXATION
904      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
905          tauThetaClimRelax3Dim = 15552000.0,
906          tauSaltClimRelax3Dim  = 15552000.0,
907      * 3 cases:
908          1) Use a constant-in-time 3-dim. field
909          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
910          3) Real-time relax. to time-evolving prescribed field
911    o Adding Laplacian-type smoothness constraint on
912      initial and boundary (forcing) controls (ic, bc)
913      * enable at compile-time via
914        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
915      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
916      * Absolute scale somewhat unclear so far
917      * no area weighting was included since no other cost term does so far
918    
919    checkpoint57y_post
920    First step for a NLFS adjoint
921    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
922    o new init. routines for calc_r_star, calc_surf_dr
923    o still need to deal with ini_masks_etc
924    o testreport seemed happy
925    checkpoint57y_pre
926    
927    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
928    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
929    o add new offset feature to offline pkg (plus minor cleanup)
930    o cfc fixes for final year of integration
931    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
932      be in GCHEM_OPTIONS).
933    
934    checkpoint57x_post
935    o fix testreport Pb in multiple test experiment.
936    o cleanup our namelist syntax in verification:
937      - make it more F95 standards compliant (some work still needed)
938      - allows the vast majority of our tests to work with gfortran
939    o Non-Hydrostatic:
940     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
941     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
942    o Allow to apply AB on T,S rather than on AB(gT,gS):
943     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
944     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
945       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
946     - need a "clever" read_pickup to restart from the other AB formulation
947    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
948    o remove some unused variables (reduces number of compiler warnings)
949    o adjoint
950      * Disable useVariableViscosity for adjoint for time being
951        (there are a number of extensive recomputations)
952      * Initialize certain variables needed for adjoint
953    
954    checkpoint57w_post
955    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
956                 fix the singleCpuIO RS version of MDSWRITEFIELD
957       and add a WARNING if using globalFiles=T with multi-processors.
958    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
959      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
960    o tracer advection scheme:
961      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
962       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
963       was not very convenient).
964      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
965       (further tests needed for the implicit DST & Flux-Limiter schemes).
966    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
967      and sRef for convenience, handy, when you want to initialize
968      ptracers in a large domain with a constant non-zero value. Also,
969      untangle ptracers_init.F a little.
970    
971    checkpoint57v_post
972    o change dome exp. to use variable viscosity in side-drag terms.
973    o remove all the files from the cfc_offline test since they are now
974      incorporated into tutorial_cfc_offline which has been producing
975      identical results for a few days of testing
976    o add new parameter: sideDragFactor to enable half-slip-side BC
977      and change side-drag S/R to use viscosity from mom_calc_visc
978      (can switch back by setting sideDragFactor=0.); affects results at
979      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
980       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
981    o vorticity & strain are now computed without masking, to account for
982      no-slip-side BC in variable viscosity calculation ; mask is applied
983      anyway later on, before computing advection/coriolis terms.
984    o modify exp4 to test new obcs support for reading from external files
985      and for passive tracers
986    o fix behavior of ptracers_monitor when monitor output is written to a
987      netcdf-file; still not independent of monitor.F (writes in the same
988      file).
989    o change default value of tRef (put a uniform, meaningful value for ocean
990      & atmos) and initialize sRef (was missing, as Martin mentioned).
991    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
992      to be proportional to enstrophy dissipation length.  Thus,
993       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
994      This is now consistent with Smagorinsky and with the manual.
995    
996    checkpoint57u_post
997    o OBCS and PTRACERS: add open boundary support for passive tracers
998      - either use homogenous (pseudo) v.Neumann conditions or prescribe
999        OB-values from file; this is not different from the way theta and salinity
1000        are treated
1001      - however, Orlanski-radiation conditions are not supported, and the model
1002        will stop if you use pTracers and Orlanski at the same time.
1003      - beefed up the rountine obcs_external_fields_load: now only those open
1004        boundary values are overwritten with values from files for which there
1005        are really files, otherwise the OB-fields remain untouched. This makes
1006        it possible to use different OBs at different ends of the domain (as
1007        with EXF)
1008    o reduce number of exch calls in shap_filt (s2).
1009    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1010      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1011    
1012    checkpoint57t_post
1013    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1014    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1015      same truncation, independent of the face number: affects affects several
1016      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1017    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1018      note that biharmonic viscosity + no-slip was not tested in any experiment.
1019    o fix bug in non-linear free-surf side-drag ; generate new output for
1020      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1021    o make mnc honor the writeBinaryPrec flag for most kinds of output
1022    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1023    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1024      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1025    o add brackets in multi-terms sum to get same truncation, independent of
1026      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1027      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1028    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1029      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1030      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1031      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1032      Suggested values of viscosity parameters found in mom_calc_visc.
1033      Many new viscosity diagnostics available.
1034    
1035    checkpoint57s_post
1036    o Add clearing-house for viscosity calculations, mom_calc_visc and
1037      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1038      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1039      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1040      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1041      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1042      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1043      ViscAhStrain and viscAhTension are now retired.
1044    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1045    o In response to JMC's bug report, genmake2 now ignores any soft-links
1046      that it finds in the *current* directory when searching for files.
1047      Soft-links found in any other source directories will still work as
1048      they did before.
1049    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1050      a C routine to unlimit the stack size
1051    o mnc-ify pkg/aim snapshot vars
1052    o mnc-ify pkg/land as requested by Daniel
1053    o various changes to mnc including:
1054      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1055      - output can now be grouped so that all files within a group
1056          change the ITER portion of their names in lock-step together
1057      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1058          and works with both EXCH1 and EXCH2 (but needs more testing)
1059      - writing works for all verification test cases w/ g77 on Linux
1060    
1061    checkpoint57r_post
1062    o make MNC variable initialization happen earlier
1063    o add diagnostics for (almost) each term of the momentum Eq.
1064    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1065    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1066    o remove MINIMAL_TAVE_OUTPUT option ;
1067      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1068    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1069      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1070    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1071    o add time-dependent SST, SSS control
1072    o cost terms in ecco/ modularized (new cost_generic.F)
1073    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1074    o new infrastructure for seaice model vs. obs misfits in seaice/
1075      * driver from the_main_loop.F is seaice_cost_driver.F
1076      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1077      * gradient check in Exp. 6a of natl_box_adjoint/
1078    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1079      (see README file)
1080    
1081    checkpoint57q_post
1082    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1083    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1084      - bug was reported by Jean-Michel and Ian Fenty
1085    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1086      update exp. cpl_aim+ocn output.
1087    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1088      Needed for high-res. runs with large global files
1089      to be able to limit tapelev size
1090    o Changed some tests for adjoint:
1091      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1092      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1093      * global_ocean.90x40x15/ back to default 3-level checkpointing
1094    o Modifications to enable scripted COMMON to MODULE conversion
1095      * verification/OpenAD/code/ has necessary scripts and description;
1096      * converts, compiles and runs successfully;
1097    
1098    checkpoint57p_post
1099    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1100    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1101      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1102    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1103    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1104      (was already the case for dissipation with mom_vecinv,
1105       and also the case for grad.PhiHyd when staggered-timeStep)
1106      This will allow to put dissipation out-off the AB time-stepping.
1107     Unfortunately, affects truncation error. Update output of exp. that "fails"
1108      (cg2d matching number) and leave the others for later: front_relax(10),
1109      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1110      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1111    
1112    checkpoint57o_post
1113    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1114      (2) its ready to be documented during the 20050801 DocFest
1115    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1116      for ideal_2D_oce and lab_sea on linux_ia32_g77
1117    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1118      in global1x1_tot/code_seaice_adj to access indices 32, 33
1119      (worth another tag)
1120    
1121    checkpoint57n_post
1122    o adding precip control xx_precip 32
1123    o adding swflux control xx_swflux 33
1124    o Replacing 10 forcing penalty cost routines by 1 generic.
1125    o Implementing partitioning in time-mean and variable adjustment
1126      for atmos. state.
1127    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1128    o in natl_box_adjoint:
1129      * updated exp 1 to 10
1130        (but does not have time-mean vs. variable split results yet)
1131    o updated global1x1/*_seaice_adj/
1132      to incorporate latest changes
1133    o enable useSingleCpuIO for mdsio vector routines
1134      (applies in particular to tapelev I/O)
1135    o removed inefficient K-loop in all active_file*control*.F
1136    
1137    checkpoint57m_post
1138    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1139      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1140    o pkg/exch2: filling of face-corner halo regions is optional
1141      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1142    
1143    checkpoint57l_post
1144     tag before updating tutorials (pre-release-2)
1145    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1146       for output and interpolation of input fields onto model grid)
1147    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1148       Affects results of exp. rotating_tank ; update output.txt.
1149    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1150          and taking the square quantity and/or using a fraction-weight field.
1151    o fix aim_diagnostics_init.F mate numbers.
1152    o add mnc output capability to diagnostics/diagstat and update
1153      our cvsignore files for the ACSII output generated
1154    
1155    checkpoint57k_post
1156    o lab_sea now uses diagnostics package and provides a suite of
1157      new EXF diagnostics output.
1158    
1159    checkpoint57j_post
1160    o exf
1161      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1162        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1163        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1164      * extended diagnostics output
1165        - now includes all EXF variables
1166        - hs, hl moved to common block
1167        - separate S/R for diagnostics, called after ctrl vector is added
1168        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1169        - EXFqnet contains true Qnet (i.e. includes qsw)
1170      * updated verif. lab_sea, global_with_exf
1171      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1172        to ensure that diagnostics sees a true EXFqnet
1173    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1174    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1175      several times with different frequencies.
1176    o mnc-ify the thsice package as requested by Daniel Enderton
1177      - the monitor--MNC output needs work
1178      - many attributes need to be added (most are currently blank)
1179    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1180      - many attributes need to be added (most are currently blank)
1181    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1182    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1183    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1184      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1185         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1186    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1187     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1188    
1189    checkpoint57i_post
1190    o Diagnostics package was changed: diagnostic allocation is now deactivated
1191      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1192    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1193      add 1rst Order upwind vertical Shear.
1194    o add a quick fix for A/B checkpointing in OFFLINE mode
1195    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1196      end-run around the C/Fortran linking horror in eesup/src/timers.F
1197    o added pkg/runclock: allows user to terminate run based on wall clock
1198    o added non-hydrostatic scaling parameter: nh_am2
1199    o pkg/my82: futile attempt to make results compiler-independent by adding
1200      some "_d 0", etc. no effect.
1201    o for mnc output, fill the 'T' coordinate var with myTime and create a
1202      separate 'iter' variable for iteration count
1203    o pkg/diagnostics:
1204      add new capability: output of Global/Regional & per-level statistics ;
1205      tested against monitor output (including land & thSIce) on various exp.
1206    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1207    
1208    checkpoint57h_done
1209      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1210      data.diagnostics, data.gchem, data.ptracers) is done.
1211    
1212    o pkg/diagnostics: prepare for Global/Regional statistics.
1213      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1214    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1215      and rename it: DIFFERENT_MULTIPLE
1216    
1217    checkpoint57h_post
1218    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1219    o pkg/diagnostics: change output frequency, now in seconds (instead
1220      of Nb of iterations). This requires to change data.diagnostics.
1221    checkpoint57h_pre
1222    
1223    o in mnc, let the user create the output dir if both mnc_outdir_date
1224      and mnc_outdir_num are false
1225    o add fflags() to pkg/diagnostics which allows one to specify, on a
1226      per-file basis, the file precision [default behavior is unchanged]
1227    o added diagnostics to pkg/kpp, including computation of mixed layer
1228      depth based on a temperature/density criterion
1229    o updated verification/natl_box to test the new pkg/kpp diagnostics
1230    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1231    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1232    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1233      not mnc -- this mistake was found by JMC and is now corrected
1234    
1235    checkpoint57g_post
1236    o add Adams-Bashforth 3rd Order time stepping:
1237      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1238      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1239    checkpoint57g_pre
1240    
1241    o make lambda[Theta,Salt]ClimRelax spatially varying
1242      (default remains spatially uniform constant based on tau)
1243    o added new control variables
1244      * init. uVel, vVel, etanN
1245      * lambda[Theta,Salt]ClimRelax
1246    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1247      (suggested by G. Forget)
1248    
1249    checkpoint57f_post
1250    o add parameter "baseTime" = model base time = time at iteration zero
1251      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1252      account for baseTime shift
1253    o move Coriolis arrays from PARAMS.h to GRID.h
1254    checkpoint57f_pre
1255    
1256    o mnc-ifying the seaice package
1257    o introduced an alternative length scale calculation for use in the limiting
1258      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1259    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1260    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1261      as well as grad(vort3).  Made it compatible with both approximate form
1262      for the cubed sphere and full form of these gradients.  Added flag
1263      useFullLeith to select between approximate and full form.  
1264    o add "d0" in getcon.F to reduce differences between compilers/platforms
1265      update output.txt of exp. fizhi-gridalt-hs
1266    o change port_rand funtion to allow to set the seed.
1267    o fix obscure MNC bug involving conversion between reals and integers
1268      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1269        new version is now more standards-compliant
1270    o adjoint-related modifications
1271      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1272      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1273      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1274    
1275    checkpoint57e_post
1276    o Adding eddy stress controls a la Ferreira et al.
1277    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1278    
1279    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1280      update output.txt of exp. fizhi-gridalt-hs
1281    o add more "Z" dimensions and associated coordinate vars to MNC
1282    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1283    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1284      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1285      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1286      months and years.  Requires pkg/cal.
1287    o diagnostics: add pickup functionality
1288      - off by default for backwards compatibility
1289      - current version only uses MDSIO -- MNC will be added
1290    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1291    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1292    
1293    checkpoint57d_post
1294    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1295    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1296      output from the diagnostics package
1297    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1298    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1299      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1300    o add coordinate variables to the MNC output from the diagnostics package
1301    o change MNC-flags default value: true when useMNC=TRUE
1302    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1303      the ability (off by default) to read the grid information using MNC
1304    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1305    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1306    o do snap-shot diagnostics at the middle of the time-interval (instead of
1307      at the end).
1308    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1309      new test for AIM with thSIce + slab-ocean
1310    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1311    o move state variable diagnostics to the beginning of the time step ;
1312      (note: still needs some work specially for snap-shot diagnostics)
1313      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1314    
1315    checkpoint57c_post
1316    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1317    o generate new output.txt files on faulks with g77 & the new -ieee option
1318    checkpoint57c_pre
1319    
1320    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1321      update output.txt of exp. global_ocean.90x40x15
1322    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1323      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1324    o add saltFlux(+File) forcing capability with periodicExternalForcing
1325    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1326    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1327    o improvements for the MNC output from DIAGNOSTICS:
1328      - correct handling of the unlimitied dimension
1329      - all dims now have associated coordinate variables
1330      - variables located at U, V, and Corner ("Z") points are now written
1331        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1332        *all* data points are output
1333    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1334    o added pkg/seaice/seaice_monitor.F
1335    o mdsio_readfield.F can now read files visible only to master MPI process.
1336    o pkg/seaice: some test code for ice-modified ocean stress
1337    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1338      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1339      spurious negative numbers for precipitation and humidity.  Will cause
1340      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1341    o pkg/ctrl/
1342      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1343        May be enabled via doPackDiag
1344      *  introduce z-scaling of
1345         + gradient (doZscalePack) and
1346         + control (doZscaleUnpack)
1347    o pkg/mdsio/
1348      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1349      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1350    
1351    checkpoint57b_post
1352    o simplify options in diagnostics_fill arguments (remove weird combinations)
1353    o fix MNC coordinate variables so that they now contain per-face index
1354      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1355      general, EXCH2 grids are only aligned to a "local" coordinate system
1356    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1357    o Implement instantaneous output within pkg diagnostics:
1358      setting a negative frequency in data.diagnostics produces
1359     "snap-shot" output (as opposed to time-average if freq > 0)
1360    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1361      NOTE: change ptracer diagnostics name: use 2 characters to work with
1362            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1363    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1364      becomes the coordinate variable for the 'T' dimension
1365    o add CF-style coordinate variables to MNC
1366      - just a first cut:  numbers are meaningless on the cubesphere and
1367        missing along the T axis but otherwise it works!
1368    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1369    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1370    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1371      this is based directly on what the model compute, so that the content of
1372      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1373    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1374    o clean up build options files for SunOS, in particular
1375      - remove -traditional from xmakedepend
1376      - change -xarch=v9 to -xarch=native for f77
1377      - restore use of make (not gmake)
1378      - add CC=gcc if using g77
1379    o changes per discussion of AM, JMC, & EH3 today:
1380      - move redundant "grid" variables out of "state" -- in preparation of
1381        creating proper CF-style coordinate variables and in recognition
1382        that any/all grid variables can be easily copied (eg. w/NCO) from
1383        the grid files into any of the other NetCDF files
1384      - *always* output grid variables with MDSIO (this will eventually be
1385        changed)
1386      - output MNC grid file if useMNC is true
1387    o every instance of _END_MASTER() has been found and replaced with
1388      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1389      preprocessors
1390    o re-arrange diagnostics pkg initialisation:
1391     - allow each package to extend the available diagnostics list
1392     - add some checking and fix small problems (multi-threaded, ...)
1393     - new S/R diagnostics_fill (replace fill_diagnostics):
1394       look through the short list of active diag. (instead of the long list)
1395       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1396    
1397    checkpoint57a_post
1398    o this set of changes restores TAMC compatibility
1399      tested for global_ocean.90x40x15 adjoint on trough
1400      (what a pain)
1401    
1402    checkpoint57a_pre
1403    o some modifs in tools/build_options for sunos
1404    o call ctrl_pack for ctrl at end for optimcycle=0
1405    
1406    checkpoint57
1407    o add horizontal bi-harmonic viscosity for vertical velocity
1408      - new parameter viscA4W (defaults to viscA4)
1409      - affects only non-hydrostatic code
1410      - to be done: no-slip lateral boundary conditions
1411    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1412    o implement Implicit Vertical advection for pTracers
1413    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1414      (implemented also for implicit vertical diffusion & advection)
1415    o OBCS: extend application of tracer open boundary conditions
1416      to a strip beyond the boundary of width Olx/Oly
1417    o add call monitor to TAF set of required calls (flow directives)
1418      and include in natl_box_adjoint
1419    o untangle a few ifdefs related to cost, ctrl, autodiff
1420      untangel a few ALLOW_ECCO_OPTIMIZATION
1421    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1422      (theta2, salt2 in ecco_cost_weights)
1423    
1424    checkpoint56c_post
1425    o OBCS as control variables
1426      - update ctrl_ad_diff.list, obcs_ad_diff.list
1427      - remove balance of obcs controls from default
1428      - fix index bug nobcs in ctrl_init
1429      - fix dummy fields filen in ctrl_pack
1430      - add dummy weights for obcs
1431    o lsopt: comment out fort.94 output
1432    o optim:
1433      - remove unnecessary header files
1434      - adjusted namelists
1435      - add xerbla.F to Makefile
1436    o exf:
1437      - multiple modifications of exf_check_range
1438      - unit change in exf_init_runoff from [m/year] to [m/s]
1439    o mdsio:
1440      - i/o-vector change debugLevel from debLevA to debLevB
1441    
1442    checkpoint56b_post
1443    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1444      is called from DO_THE_MODEL_IO
1445      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1446      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1447      - clean up PTRACERS_WRITE_TIMEAVE a little
1448    o add another verification experiment that tests both the cfc-pkg and
1449      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1450      reactive tendencies treated inline with regular timestepping
1451    o testreport previously did a lousy job of comparing small numbers, so
1452      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1453      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1454      testreport.
1455    o ptracers_monitor: bug fix for MPI
1456    
1457    checkpoint56a_post
1458    o GCHEM: finish reorganizating the package
1459      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1460        (introduces another 3D-array for each passive tracer, but only if
1461        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1462        gchemTendency is not needed because the timestep is done separately)
1463      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1464      - GCHEM is now---more or less cleanly---separate from PTRACERS
1465      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1466        so clear to me how that should be done in a general way.
1467    o CFC: improve formatting of output in CFC_ATMOS
1468    o PTRACERS:
1469      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1470        that ALL experiments with ptracers enable can be checked. This makes
1471        GCHEM_MONITOR obsolete.
1472      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1473        monitorFreq
1474      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1475    o add PTRACERS (PTR0[1-5]) to testreport output
1476    o exf_check_range:
1477      * default changed to .TRUE.
1478      * will check values for niter0 if debLevA, every timestep if debLevB
1479      * STOP in exf_check_range if 'out of range'
1480      * range chosen generous to allow for potential extema
1481      TBD: a version with stricter range
1482           permitted range would be runtime parameters
1483    o GMredi:
1484      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1485      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1486      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1487    o GCHEM:
1488      - move call to GCHEM_FORCING_SEP, so that it is now called before
1489        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1490      - introduced a useGCHEM runtime flag and applied it everywhere.
1491      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1492        this flag is now only visible within GCHEM-pkg routines.
1493      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1494        be replaced by a 3D array that is computed before thermodynamics; for
1495        this, the tracer ID iTracer had to be included into the parameter list
1496        of ptracers_forcing
1497      - set up forward_step to call gchem_forcing, that will replace
1498        gchem_forcing_int in ptracers_forcing
1499      - cleaning up
1500    o small cleaning of exch2: remove files that are also in eesupp/src
1501    
1502    checkpoint56
1503    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1504    o mnc: cleanup "full" files--fixes out-of-memory problem
1505    o ECCO-GODAE
1506      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1507      * fully merged and updated from SIO code
1508        windstress sign change affects
1509        - exf_inscal_[u/v]stress
1510        - sign of xx_tau[u/v] adjustments
1511        - signs in cost_scat
1512      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1513      * natl_box_adjoint updated and compressed
1514      * 2-level checkpoint switch added
1515        (tested in EXP. 1 of natl_box_adjoint)
1516      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1517    o SVD
1518      * first complete, non-hacked version for SVD calculations
1519      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1520        performed via direct access files admtlm_vector.it????
1521        (via ctrl_[un]pack)
1522      * optimcycle is used for ARPACK iteration counter
1523        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1524      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1525        and add linear transforms where necessary
1526      * controls are initial/final SST, SSS (can be extended; need to check
1527        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1528    o mdsio: filename info to both stderr, stdout
1529    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1530      from sign change
1531    
1532    checkpoint55j_post
1533    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1534      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1535    o add consistent build directories and .cvsignore files to verification
1536    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1537    o make all subroutines 30 or less characters in length for certain older
1538      compilers to work (a thorough search only turns up two routines in
1539      pkg/ptracers)
1540    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1541      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1542    
1543    checkpoint55i_post
1544    o change arrays for total vertical diffusivity (2.D if explicit,
1545      3.D if implicit) ; each ptracer uses its own background value.
1546    o added mnc/NetCDF output capability to ocn_compon_interf
1547      - added bits to verification/cpl_aim+ocn so that it can run on
1548        ITRDA and other clusters without the mpirun "-wd" option
1549    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1550      configuration
1551    o give MNC the ability to create additional files rather than
1552      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1553      - the default is just less than 2GB which is a practical limit
1554        on many systems
1555    o Compute the non-local term using either KPP vertical diffusivity (=default)
1556       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1557    
1558    checkpoint55h_post
1559    o add verification test "vermix"
1560    o remove all the *_ioinc flags and replace with the single global
1561      outputTypesInclusive flag
1562    o allow to set a vertical profile of vertical diffusivity for T & S
1563    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1564    o useMNC moved from data.mnc to data.pkg
1565    
1566    checkpoint55g_post
1567    o Renaming carbon AD experiments to comply with testreport conventions
1568    o Updating adjoint of Held-Suarez hs94.1x64x5
1569    o Fixing directives for non-ECCO forward_step, after ECCO directives
1570      have been fixed to avoid recomp. of do_oceanic_phys
1571      Works well for global_ocean.90x40x15,
1572      but recomp. issue remains for carbon
1573    o Updating adjoint output for natl_box_adjoint after
1574      pkg/ecco has been modified (see taga c55d_post)
1575    
1576    checkpoint55f_post
1577    o rename to timeave_init_fixed
1578    
1579    checkpoint55e_post
1580    o some delicate re-shuffle of store directives to avoid one
1581      extra call of do_oceanic_physics
1582      affects ecco_the_main_loop.F, do_oceanic_physics.F
1583      checkpoint_lev1_directives.h
1584    o NB: this may break global_ocean adjoint temporarily,
1585      but it is clear how to fix it. Will do later, need this now.
1586    
1587    checkpoint55d_post
1588    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1589    o ecco_cost_weights is modified to 1x1 runs
1590    o modifs to allow observations to be read in as
1591      single file or yearly files
1592    o enable to read exf forcing fields as either
1593      single file or yearly files (flag useExfYearlyFields)
1594    checkpoint55d_pre
1595    
1596    o switch between 2-level and 3-level checkpointing
1597    o add ability of MNC to write local and "partial" (eg. 2D slices where
1598      the full 3D field is never actually stored) arrays to NetCDF files
1599      with the correct (that is, the complete multi-dimensional) set of
1600      array indicies
1601      - used in mom_vecinv() to write the diagFreq output
1602      - tested (demonstrated) in verification/aim.5l_cs
1603    o further mnc-ification
1604      - add verification/lab_sea to the list with mnc setups
1605      - fix undefined mnc v-names in cd_code
1606      - add kpp to mnc output (both snapshot and timeave)
1607    o non-hydrostatic code
1608      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1609        in calc_gw.F
1610      - defaults to viscAh
1611      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1612        friction or Leith) in non-hydrostatic mode, as long as there is
1613        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1614    o pkg/cost
1615      extend simple cost functions to treat time mean quantities
1616      (T,U,V) via cost_accumulate_state from cost_tile
1617    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1618        be 2 times larger than the minimum size the advection scheme requires.
1619        now get a perfect conservation of salt in advect_cs test-exp (updated)
1620    o GGL90 (Gaspar's TKE mixed layer)
1621      - add horizontal diffusion of TKE, requires exchanges in
1622        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1623        default. In OPA there is no horizontal diffusion of TKE but the
1624        mixing coefficients are computed from a horizontal average of TKE of
1625        6 points or so. I think that diffusion has a little more physical
1626        justification.
1627      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1628        was in vain)
1629      - mask tke-variable in ggl90_init
1630    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1631    o fix biharmonic diffusion on CS-grid.
1632    o more obcs stuff
1633      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1634        for reading boundary values. This routine is called from
1635        obcs_prescribe_read
1636      - updated obcs_check
1637      - changed sponge layer relaxation parameter units for days to seconds
1638      - turned off sponge layer by default
1639      - changed argument list of OBCS_CALC to myTime+deltaTclock
1640      - fixed about 35 bugs in obcs_external_fields_load
1641    
1642    checkpoint55c_post
1643    o obcs stuff
1644      - new runtime flags useOBCSprescribe, useOBCSbalance
1645      - re-arranged obcs_calc
1646      - moved exf_getobcs to obcs_prescibe_read
1647        obcs_prescibe_read is called after ORLANSKI stuff
1648        and independent of it (executable can contain all).
1649      - updated obcs_check
1650      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1651        These may be necessary only if tangential velocities are
1652        prescribed at OB, not sure, needs testing.
1653    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1654      which simplifies the calls and passes the ifc check-bounds test
1655    
1656    checkpoint55b_post
1657    o add a 2D scalar, Z location, exchange_2 routine.
1658    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1659      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1660      affects advect_cs results (for the wrong reason): update output.txt
1661    o use a more standard discretization for biharmonic viscosity ;
1662     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1663      affects results of dome set-up: update output.txt
1664    o fix gad_advection.F (CubedSphere part), back to version 1.23
1665    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1666    
1667    checkpoint55a_post
1668    o merged code to
1669      * prescribe/read time-dependent open boundaries
1670        (works in conjunction with exf, cal)
1671      * sponge layer code for open boundaries
1672      * each boundary N/S/E/W now has its own CPP option
1673        (healthy for the adjoint)
1674    
1675    checkpoint55
1676    o up-to-date adjoint of previous breaks
1677      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1678      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1679      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1680      - carbon: * remove tr1-related adjoint verification
1681                * add ptracer as control variable
1682    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1683      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1684    
1685    checkpoint54f_post
1686    o in verification/carbin/ remove experiment related to
1687      ALLOW_PASSIVE_TRACER (array tr1 etc)
1688      code_ad/ input_ad/ results_ad
1689    
1690    o add two new packages
1691      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1692        + subject to optimization (memory)
1693      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1694        + subject to reordering (many GOTOs in the original code)
1695        + so far opps is called for every (i,j) point, and then operates in
1696          the vertical; one may want to reorder the scheme in order operate in
1697          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1698          fields)
1699    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1700      - all verification tests compile and run with linux_ia32_g77
1701      - defaults are compatible with current input files--nothing
1702        should change if you were not previously using MNC
1703      - MNC output has been added in numerous places (eg. timeave)
1704        but there are still a few writes not yet do-able with MNC
1705        (this is in progress)
1706      - flags now allow for either/or/both use of MDSIO and MNC and
1707        documentation will soon follow
1708      - numerous small formatting cleanups for ProTeX
1709    o add version info (via BUILD_INFO.h) to MNC and stdout
1710    
1711    checkpoint54e_post
1712    o add two new packages
1713      - pp81 (Packanowski and Philander, 1981), Richardson number and
1714        stratification dependent mixing
1715      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1716      - these scheme operate in a similar manner as KPP (without ghat, of
1717        course), however there is only one diffusivity that is used for both
1718        temperature and salinity (and passive tracers)ç
1719    o add offline package
1720    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1721      provided by Stephanie Dutkiewicz
1722    o genmake2: add ability to search for C compilers and cleanup test output
1723      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1724    
1725    checkpoint54d_post
1726    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1727    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1728      leading to additional shift by 5 days each year of integration
1729       (i.e. leading to considerable offset over the years)
1730    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1731    o start with no AB and no initial filtering (staggerTimeStep):
1732      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1733    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1734      (external loading & cpl import/export stay in forward_step.F)
1735    o update coupling interface to work with new staggerTimeStep
1736    o change MDSIO ptracers_pickup.
1737    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1738    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1739    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1740    
1741    checkpoint54c_post
1742    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1743      this affects (truncation error) output.txt of test-exp:
1744       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1745    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1746    o change Qnet to always be the net heat flux, (+upward).
1747      affects (truncation error) output of natl_box exp.: updated
1748    o define the max number of passive tracers in PTRACERS_SIZE.h
1749    o start to test mnc routinely in exp0
1750    o add sea-ice loading (sIceLoad) as a new forcing field.
1751    
1752    checkpoint54b_post
1753    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1754       impressive on Altix and Opteron systems)
1755    o diagnostics can now write NetCDF files through the mnc package
1756    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1757    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1758    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1759      affects (truncation error) output of lab_sea & natl_box exp.: updated
1760    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1761    
1762    checkpoint54a_post
1763    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1764    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1765    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1766    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1767      + internal_wave (shift in writing cg2d_ini_res)
1768    checkpoint54a_pre
1769    
1770    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1771      - modified verification/lab_sea and natl_box_adjoint accordingly
1772    
1773    checkpoint54
1774    checkpoint53g_post
1775    o prepare splitting of thermodynamics: store convect.counter in common block
1776    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1777      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1778    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1779    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1780    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1781    o restore adjointability
1782    
1783    checkpoint53f_post
1784    o modifications that affect AIM experiment results (update output.txt):
1785      - no advection of S at top interface Nr (pkg/generic_advdiff)
1786      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1787    o AIM pkg:
1788      - include stability function into surf.Flux derivative relative to Tsurf
1789      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1790    
1791    checkpoint53e_post
1792    o merged cylindrical coord configuration
1793    o added rotating_tank experiment
1794    checkpoint53e_pre
1795    
1796    checkpoint53d_post
1797    o faulks upgraded: re-generate output.txt that have changed:
1798       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1799    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1800    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1801    o added Sadourny discretization of Coriolis
1802      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1803      - re-enabled use of omega3 (useAbsVorticity)
1804    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1805      vector-invariant equations
1806      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1807    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1808      hopefully without new bugs
1809      - still to do: biharmonic friction for non-hydrostatic w
1810    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1811    o regenerated output for global_ocean_ebm (using -ieee)
1812    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1813      of mom_common/
1814      - simple re-arrangement of instructions within computing loop
1815    checkpoint53d_pre
1816    
1817    checkpoint53c_post
1818    o new version of coupler for AIM+thSIce and Ocean models
1819     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1820     - land: change Evaporation of snow
1821     - aim with thSIce: fix bug in snow-precip.
1822    o changes to calc_gw.F
1823     - bug fix for w^2 term near the bottom boundary
1824     - (hopefully) improve the lateral slip boundary condtions for use with
1825        partial/looped cells
1826      - because the bug fix changes two verification experiments anyway (exp5
1827        and plume on slope), change the lateral boundary condition from half slip
1828        to the value of no_slip_sides
1829    o ebm package wasnt quite up to the parallel task. Fixed that.
1830    o Adjoint of EBM package + verification
1831      * TLM OK
1832      * ADM not sufficient accuracy yet (needs further testing)
1833    
1834    checkpoint53b_post
1835    o Commiting new energy balance model to repository
1836      * package is pkg/ebm
1837      * verif. is verification/global_ocean_ebm
1838      * references are in ebm_driver.F
1839    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1840    C        Global thermohaline circulation. Part I:
1841    C        Sensitivity to atmospheric moisture transport.
1842    C        J. Climate 12(1), 71-82
1843    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1844    C        Global thermohaline circulation. Part II:
1845    C        Sensitivity with interactive transport.
1846    C        J. Climate 12(1), 83-91
1847    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1848    C        Destabilization of the thermohaline circulation
1849    C        by atmospheric eddy transports.
1850    C        J. Climate 7(12), 1870-1882
1851    o Will need long integration testing.
1852    checkpoint53b_pre
1853    
1854    o created pkg/mom_common in preparation for variable viscosity code
1855    o renamed and split ini_mnc_io
1856    o pkg/land: only liquid water can diffuse or run-off
1857    o AIM using land: soil wetness availability account for snow
1858    o added printMapIncludesZeros to EEPARMS namelist
1859    
1860    checkpoint53a_post
1861    o restore TAMC compatiility for exf_constants.h
1862      (no usage of _d in .h)
1863    o Additional storing in KPP in an attempt to fix
1864      TAMC problem with adjoint of KPP code.
1865      (no success...)
1866      Identical code works fine with TAF.
1867    o Fixed verification/natl_box_adjoint experiments.
1868      Initial conditions for Experiments 4 and 5 are now
1869      set to "SEAICE_initialHEFF=0", which is more reasonable,
1870      and hence gives results closer to that of Experiment 2.
1871      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1872    
1873    checkpoint53
1874    o stable checkpoint with up to date adjoint
1875      TLM tests only run for 1st grdchk at the moment. Its unclear if
1876      this is a code problem or a problem with resetting code for g_
1877      variables that is being autogenerated wrong.
1878      Otherwise:
1879       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1880       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1881         are both still in chaos following their security messes.
1882    
1883    checkpoint52n_post
1884    o various build (mostly genmake2) changes including:
1885      - ability to build/run more easily within Cygwin and MacOS X
1886      - more complicated Makefiles with a stronger dependence on Gnu Make
1887    o pkg/seaice modifications
1888      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1889        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1890        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1891      - changed proxy for geostrophic velocity and updated
1892        verification/lab_sea/results/* accordingly
1893      - removed ADI dynamic solver from pkg/seaice
1894      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1895        they caused a segmentation fault under certain circumstances
1896      - removed unused field WATR
1897    o bug fix in exf-package:
1898      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1899         now reflect that.
1900    o small fixes in the cal-package:
1901      - set reference date to first of January for the 'model'-calendar
1902      - failing of cal_CheckDate in cal_FullDate now actually results in a
1903        warning
1904    o small modifications in exf-package to increase flexibility:
1905      - change climtempfreeze from a constant to a runtime parameter that
1906        is specified in data.exf_clim (default = -1.9)
1907      - introduce runtime parameter windstressmax (default = 2.0) that is
1908        specified in data.exf
1909    o fix in pkg/thsice:
1910      - update Evap (Tsf changes) to be consistent with Latent heat flux
1911      - maintain snow precipitation unchanged (even if Tsf >=0).
1912     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1913    
1914    checkpoint52m_post
1915    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1916      this does not change any of the results, because myIter=0 in swfrac always
1917      lead to jwtype=2 (the default anyway), but the call makes little sense
1918      as a default
1919    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1920    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1921      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1922    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1923    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1924    o extending useSingleCpuIO option to work with new exch2 I/O format
1925      - old-style, missing-tile I/O is still accessible by defining CPP
1926        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1927    o monitor package can write to NetCDF files and/or STDOUT
1928    o fix re-definition bug in MNC_GRID_INIT_ALL()
1929    o doc/api_reference added
1930      - a framework for building an API Reference Manual using all
1931        the "protex" comments embedded in the code
1932      - see pkg/generic_advdiff, pkg/mnc for examples
1933    o MNC:
1934      - make myThid the last argument for all subroutines
1935      - new default for the grid files: NO halos
1936      - add useMNC and other run-time flags
1937      - separate per-file-group handling of the unlimited dimension
1938      - early initialization of MNC w/ flags read at the eeboot stage
1939        and lookup tables set in initialize_fixed
1940      - write all MNC output to a freshly-created directory
1941    o thermodynamics sea-ice (thsice) is now tested with testreport.
1942    o test exp. advect_cs: use the standard cs32 grid ; update output.
1943    o Added functionality to grdchk:
1944      pick global i,j,k position (or nearest wet) where to perform check.
1945    
1946    checkpoint52l_post
1947    o new land formulation:
1948      a) use ground enthalpy as prognostic variable to ensure exact
1949         energy conservation.
1950      b) account for water temperature and for latent heat of freezing
1951         in all processes (rain, run-off, ground storage)
1952      c) compute surface and ground temperature implicitly.
1953    o aim_v23 modification for new land model:
1954      a) Treat separately land / ocean / sea-ice surface fluxes
1955         to allow implicit computation of land & sea-ice surface temp.
1956      b) add snow precipitation.
1957    checkpoint52l_pre
1958    
1959    o fix problem (when 1 tile is empty) in min/max monitor.
1960    o fix bug in timeAve (u,vZetatave in common block)
1961    o no restoring terms under ice for pkg/seaice
1962    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1963    o bug fix for pkg/seaice pickups
1964    o change MNC call locations and add coordinate attributes
1965    o mask vorticity at the corner ; affects global_ocean.cs output
1966    o fix ini_curvilinear_grid ; test CS experiments with mpi
1967    o aim.5l_cs: modify sea-ice fraction input file ; update output
1968    o exf: Adding simple range check routine for exf fields after read
1969    
1970    checkpoint52k_post
1971    o removed top-level directory "diags"
1972      - we migrated these functions to pkg/timeave a long time ago
1973    o fixed bug introduced in pkg/monitor
1974    o accuracy ctrlprec = 32 insuffient for gradient checks using
1975      averaged fields (I/O via cost_averages)
1976      -> use ctrl.h in active_file*.F to control I/O precision.
1977    o paramter list of CALL ADTHE_MAIN_LOOP
1978    o added initial do_the_model_io to ecco
1979    o set all ...Freq to zero after cost_final
1980      taveFreq, dumpFreq, pChkptFreq
1981    o MAIN and ECCO differentiability restored
1982    
1983    checkpoint52j_post
1984    o fix nchklev in tamc.h for global_ocean...
1985    o Bringing flow and store directives up-to-date
1986    o Really weird thing!
1987      call do_the_model_io from the_main_loop with parameters
1988      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1989      TAF places a faulty re-call of initialise_varia
1990      after cost_final call which should not be there!
1991    checkpoint52j_pre
1992    
1993    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1994      error messages
1995    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1996    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1997      debug output
1998    o modfied mdsio_writefield.F to handle non-global files under exch2
1999    o update AIM Cubed-Sphere exp (aim.5l_cs):
2000      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2001    o update AIM Equatorial Channel exp:
2002      use standard aim_v23 pkg and change the SST fields to be more realistic.
2003    o globalFile now works with exch2
2004    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2005      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2006    o limit timeave output for hi-res integrations
2007    
2008    checkpoint52i_post
2009    o removed CPP_EEOPTIONS.h from verification/*/code
2010    o updated the tiling for global_ocean_pressure
2011    checkpoint52i_pre
2012    
2013    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2014      the old pkg/aim).
2015    
2016    checkpoint52h_pre
2017    o shortened offending lines in exch2_send_rx?.template
2018    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2019    o genmake2: add build & execute test for NetCDF code
2020    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2021      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2022    o added useSingleCPUIO flag to monitor.F and mon_out.F
2023    o added temporary hack for sea-ice dynamics on the cube:
2024      metric terms are ignored and it is assumed that
2025      there is no sea-ice on cube faces 1, 2, 4, and 5.
2026    
2027    checkpoint52f_post
2028    o added exch2 cube routines to pkg/exch2
2029    o modified hs94.cs-32x32x5 to use it
2030    o added new grid files to hs94.cs-32x32x5
2031    checkpoint52f_pre
2032    
2033    checkpoint52e_post
2034    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2035      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2036    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2037      to work with implicit vertical advection and AB ;
2038    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2039    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2040     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2041    checkpoint52e_pre
2042    
2043    o fix bug in impldiff when Nr=1 or Nr=2.
2044    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2045    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2046    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2047      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2048    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2049    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2050    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2051    
2052    checkpoint52d_post
2053    o re-tiled many expts to allow comparison in multi-processor mode
2054      - updated output accordingly
2055      - changed hs94.128x64x5 to use intial T from file rather than use the
2056        random number generator
2057    o add infrastructure in model routines for fizhi and gridalt packages
2058    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2059    o changes to permit hi-res, cubed-sphere, configuration
2060      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2061      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2062      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2063        of surface winds for the cube
2064      (A verification experiment, based on global_ocean.cs32x15, but with
2065       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2066       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2067       complete with example surface forcing files and matlab scripts to look
2068       at the output and compare it with that of global_ocean.cs32x15.)
2069    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2070       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2071       to conform to the common rule.
2072    o check-in the first version of the coupler + interfaces for multi-components
2073       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2074       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2075       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2076       - ocean and atmos. share the same horizontal grid (no interpolation).
2077       - exchanges between component and coupler is done in forward_step
2078    o new verification experiment, cpl_aim+ocn:
2079       coupled ocean - AIM atmosphere on cs32 grid.
2080    
2081    checkpoint52d_pre
2082    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2083    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2084    
2085    checkpoint52c_post
2086    o Fixing OPTIONS files for use of exf:
2087      - ALLOW_ECCO not needed
2088      - ECCO_CPPOPTIONS.h should not be included from
2089        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2090        as has been the case in the past
2091      - All cal/exf related options are currently set in
2092        single header file. Should remain so until we
2093        agree on a consistent new policy.
2094    o Removed all CPP options for cal package.
2095      cal has no more CPP options.
2096    o modified STOREs in GAD_ADVECTION
2097    o corrected key comp. for passkey
2098    
2099    checkpoint52b_post
2100    o new version: "thsice" of thermodynamic sea-ice pkg:
2101     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2102     - modify fluxes but do not change theta directly;
2103     - light cleaning of bulk_force pkg (still needed with thsice).
2104     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2105       + output_thsice.txt to test thsice & bulk_force pkgs.
2106    o put back grid & coriolis monitor output.
2107    checkpoint52b_pre
2108    
2109    o call "do_the_model_io" at the beginning (=> dump initial state)
2110    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2111    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2112      (need info on NUMBER_OF_PTRACERS)
2113    o missing PTRACERS headers in some routines
2114    o default tamc.h in pkg/autodiff supposed to crash
2115      to ensure proper customization
2116    
2117    checkpoint52a_post
2118    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2119      - moved surfaceTendencyTice from pkg/seaice to main code
2120      - subroutine FREEZE_SURFACE now limits only surface temperature
2121        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2122        => new output.txt for global_ocean.cs32x15 & global_with_exf
2123      - keep the old version of FREEZE for backward compatibility;
2124        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2125      - corresponding modifs for TAF directives
2126    o added surface flux output variables to TIMEAVE_STATVARS
2127    o time-averaged output for pkg/ptracers
2128    o fix problem with ECCO-related divided adjoint
2129      snapshot file was missing some ad-variables,
2130      but no warning issued by TAF
2131    
2132    checkpoint52a_pre
2133    o some bug fixes for #undef REAL4_IS_SLOW
2134    
2135    checkpoint52 = ecco_c52_e35
2136    o after testing adjoints of checkpoint51u_post
2137    
2138    checkpoint51u_post
2139    o this is the post-merge tag of the ecco-branch
2140      (needs another clean checkout and re-testing)
2141    o various natl_box_adjoint configs and results
2142      but no input fields
2143    o obcs adjoint not yet merged!
2144    o adding ECCO global 1x1 and 2x2 degree configs
2145    o updated/extended some store directives for seaice
2146    o pkg/ecco now containes ecco-specific part of cost function
2147    o top level routines the_main_loop, forward_step
2148      supersede those in model/src/
2149      previous input data.cost now in data.ecco
2150      (new namelist ecco_cost_nml)
2151    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2152    
2153    checkpoint51t_post
2154    o this is the pre-merge tag of the ecco-branch
2155    
2156    checkpoint51s_post
2157    o cleanup: removed various obsolete #define-s
2158    o pkg/grdchk
2159      - renamed 'ph-grd 3' to 'grad-res'
2160      - merged from ecco-branch
2161        (remaining bug fixes for obcs gradient checks)
2162      - additional high-precision output for testreport
2163        (grep for 'precision_grdchk_result')
2164    
2165    checkpoint51r_post
2166    o cleaned up or removed CPP_OPTIONS.h files
2167    o updated results for some of the tests to reflect the new
2168      optfiles (-ieee: -O0 instead of -O3)
2169    
2170    checkpoint51q_post
2171    o cd_code:
2172      - moved cd_scheme.F -> cd_code_scheme.F
2173      - separate read_checkpoint from cd_code_ini_vars.F
2174      - separated cd_code part from write_checkpoint
2175      - updated AD_SOURCE, generated .flow
2176      - added CD_CODE_VARS.h to the_main_loop
2177      - Moving cd_code specific store dir.s to pkg/cd_code
2178    o ctrl package totally restructured
2179      - pack/unpack now optional and decoupled from
2180        xx_/adxx_ I/O
2181      - ctrl_pack/unpack cleaned
2182        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2183      - confined inclusion of AD_CONFIG.h to where necessary.
2184    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2185    
2186    checkpoint51p_post
2187    o create initial cd_code package
2188      - WARNING: the initialization of fields within packages
2189        is broken because INI_FIELDS (where READ_CHECKPOINT is
2190        called) is called *before* PACKAGES_INIT_VARIABLES.
2191        This seems to be backwards since
2192        1) its important to initially zero the entire field including
2193           the "halo" region
2194        2) zeroing needs to be done *before* reading pickup info
2195           and the pickup call might or might not happen in any
2196           particular run
2197      - this needs an overhaul for R2
2198    o cleanup verification/*/code/GMREDI_OPTIONS.h
2199    o cleanup testreport
2200    
2201    checkpoint51o_post
2202    o bringing AD-related verif's up to date with genmake2
2203      - carbon/
2204      - global_ocean.90x40x15/
2205      - hs.94.1x64x5/
2206      - (front_relax/ )
2207    o (more) consistent directory structure for AD-related verif.'s
2208    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2209    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2210    o bug fix in find_alpha.F for MDJWF:
2211      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2212        change rho -> rho-rhoConst
2213      - replace call find_rho to find_rhonum
2214    o initialisation of rFlx extended to full array (required by TAF)
2215      and shifted to thermodynamics
2216    o removed PTRACERS.h in ptracers routine
2217    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2218    o Correcting initialisations for fVerU, fVerV.
2219    o helping TAF to recognize dependency on kUp for
2220      fVerU, fVerV
2221    o Replacing delZ by delR in pkg/ctrl/
2222    checkpoint51o_pre
2223    
2224    o undid all of cp51 pending some cleanups and discussion
2225    o added the [#include "AD_CONFIG.h"] statement to all files that need
2226       it for adjoint/tl #defines
2227     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2228     o removed tools/genmake since it no longer works
2229    
2230    checkpoint51n_post
2231    o modifications to make FREEZE flux visible to pkg/kpp
2232      - moved surfaceTendencyTice from pkg/seaice to main code
2233      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2234      - subroutine FREEZE now limits only surface temperature
2235        (this means new output.txt for global_ocean.90x40x15,
2236         global_ocean.cs32x15, and global_with_exf)
2237    o added surface flux output variables to TIMEAVE_STATVARS
2238    
2239    checkpoint51n_pre
2240    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2241    o added [#include "AD_CONFIG.h"] to all files that use the following
2242      defines:
2243      - ALLOW_ADJOINT_RUN
2244      - ALLOW_TANGENTLINEAR_RUN
2245      - ALLOW_ECCO_OPTIMIZATION
2246    
2247    checkpoint51m_post
2248    o incorporating changes to get TAMC/TAF working in genmake2
2249      - added new TAMC/TAF targets to the Makefile
2250      - various cleanups related to package handling
2251      - these changes should have no impact on the forward model
2252    
2253    checkpoint51l_post
2254    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2255     - faster algorithm for cal_addtime.F
2256     - higher precision arithmetic, where needed
2257     - pkg/exf *startdate variables changed from calendar date to
2258       model integration time
2259    
2260    checkpoint51l_pre
2261    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2262    o enable to apply restoring on S & T only in a latitude band.
2263    o update output (external_forcing_surf modif. change truncation errors)
2264       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2265    
2266    checkpoint51k_post
2267    o change default to: useNHMTerms=.FALSE.
2268     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2269       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2270     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2271        exp1, ideal_2D_oce
2272     - change data file of oceanic exp (leave the results unchanged for now)
2273       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2274    o set gravitySign automatically according to the vertical coordinate used
2275      (and change sign: back to "logical" value: +1 when R increases downward)
2276    o added an include barrier to the default CPP_OPTIONS.h and
2277      removed the #include "PACKAGES_CONFIG.h" from it
2278    o fix a bug in mom_fluxform (from chk51j_post)
2279    
2280    checkpoint51j_post
2281    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2282    o adjusted some flow directives (dynamics, thermodynamics)
2283    o added cubed-sphere case to test cost function
2284    o heckpoint_lev?_directives.h now include
2285      pkg-specific directives, whenever those are enabled.
2286    o Moving pkg-specific flow directives to corresponding pkg
2287      Moving pkg-specific differentiation list to corresponding pkg
2288      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2289      ---> conventions are
2290           - pkg_ad.flow
2291           - pkg_ad_diff.list
2292           - pkg_ad_check_lev?_dir.h
2293    
2294    checkpoint51i_post
2295    o merge of the branch-genmake2
2296      - knowingly breaks the older genmake
2297      - automatic generation of all ALLOW_${PKG_NAME} defines
2298      - new testreport supersedes older testscript
2299    o large number of package inclusion and header cleanups
2300    checkpoint51i_pre
2301    
2302    o new output for adjoin of global ocean vector invariant
2303    o fix for checkpoint of thermodynamic seaice and bulk_force
2304    o Steph gchem various cleanups
2305    
2306    checkpoint 51h_pre
2307    o fixed some single quotes
2308    o modify gchem pkg to be more versatile
2309    o modifications to clean up dic pkg
2310    o add pkg/cfc
2311    
2312    checkpoint51g_post
2313    o provide links for ARPACK and ADM*TLM
2314    o start removing verification/vero/
2315    o update AD-related stuff
2316      (in particular some IF-statements in model/src/ routines)
2317    o adding to verification/global_ocean.90x40x15/ adjoint of
2318      vector invariant setup
2319    
2320    checkpoint51f_post
2321    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2322    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2323      of tracer Green's fucntions for ocean inversion project.
2324    
2325    checkpoint51f_pre
2326    o Added on-the-fly spatial interpolation capability
2327        "USE_EXF_INTERPOLATION" to pkg/exf.
2328      - This is a temporary Cartesian-grid hack until
2329        the super-duper ESMF coupler becomes available.
2330      - See verification/global_with_exf/README for usage example.
2331      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2332        flags and modified pkg/seaice accordingly.
2333    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2334        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2335        non-local transport term.
2336    
2337    checkpoint51e_post
2338    o pkg/mom_vecinv:
2339      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2340      - add time-ave diagnostic of vorticity advection.
2341    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2342    o atmospheric geopotential: - include water vapor effect;
2343                                - use p^kappa in p* scaling.
2344    o land pkg: read initial state from files.
2345    o AIM : add stratospheric drag in the upper level
2346    
2347    checkpoint51d_post
2348    o change function ILNBLNK (=> last non-blank char.) to return zero
2349      (instead of the string length) when the string. char is empty
2350    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2351    o modif's to restore TAMC compatibility
2352      - avoid "_d" constructs in PARAMETER declarations
2353      - avoid interrupting lines by comment lines
2354    o Use cluster local disks for purely local I/O
2355      vs. globally visible disks needed for ctrl stuff
2356      (merged from ecco-branch)
2357      - new active_file_loc... and mdsio_..._loc routines
2358      - affected packages: autodiff, ctrl, grdchk, mdsio
2359    
2360    checkpoint51c_post
2361    o introducing integer flag debugLevel
2362      - debLevZero: suppress all output
2363      - debLevA: standard
2364      - debLevB: equivalent to current debugMode=.TRUE.
2365    o introducing pathname variable mdsioLocalDir for mdsio
2366      that can be specified at runtime
2367      (relevant for cluster I/O to local disk)
2368    `
2369    >>>checkpoint51b_post
2370    adjoint of ptracers
2371    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2372    o extended state in checkpoint_lev?, etc.
2373    o alternative ctrl/cost with tr1 or ptracer
2374    o new comlev1_bibj_ptracers
2375    o new ptracers.flow
2376    o made ptracers_forcing same as external_forcing_s
2377    o added verification for adjoint with ptracers
2378      - adm. grdchk fail so far
2379      - tlm. grdchk OK
2380      - checked tapelev/comlev recomputations: OK
2381    <<<checkpoint51b_pre
2382    
2383    checkpoint51a_post
2384    o added code for biogeochemistry package
2385      - new pkgs: dic, gchem
2386      - new subroutine in ptracers
2387    o modify code for biogeo packages
2388      - in model/src and pkg/ptracers
2389    
2390    checkpoint51
2391    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2392      - autodiff, ctrl, exf, grdchk, seaice
2393      kept separate packages
2394      - cost, ecco, obcs
2395    o updating verification/internal_wave, verification/lab_sea
2396      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2397    
2398    checkpoint50i_post
2399    o Preparing next differentiable checkpoint and sync
2400      of MAIN vs. ecco-branch
2401      - 1st step: this one is differentiable
2402      - 2nd step: next(! not this) checkpoint will have updated packages
2403                  from ecco-branch)
2404    
2405    checkpoint50h_post
2406    o new package "land": provide surface BC for AIM.
2407    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2408    o AIM: use true log-P extrapolation for near surface temp (= as in
2409        F.Molteni paper) ; update aim.5l_cs output.
2410    o New variable in PARM03 for more flexible pickups
2411    o somewhat cleaned package initialisation sequence for
2412      ctrl/ cost/ ecco/ in packages_... routines
2413    
2414    checkpoint50g_post
2415    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2416      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2417      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2418        made the default because of faster convergence than ADI
2419    
2420    checkpoint50f_post
2421    o exf totally restructured
2422      - replaced all exf_set_ routines by one generic exf_set_gen.F
2423        and made sure it's still differentiable
2424      - split exf_getffields.F into new exf_bulkformulae.F
2425      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2426      - updated adjoint/makefile and relevant verif. accordingly
2427    
2428    checkpoint50f_pre
2429     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2430          + change Evap over land. (update aim.5l_cs output)
2431     o added missing .cvsignores and made uniform across expts
2432     o changed configuration of tidal_basin_2d expt
2433     o added pkg/debug functions for tracing code in fatal crashes
2434     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2435     o new fn in pkg/monitor to stop model if solution grows too big
2436     o removed lots of single quotes from comments
2437    
2438    checkpoint50e_post
2439    o make KPP work with PTRACERS
2440     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2441       nearly a copy of kpp_transport_s
2442     - there is no analogue to SurfaceTendencyS, so I have to use
2443       gPtr(of the surface layer) instead
2444    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2445    checkpoint50e_pre
2446    
2447    checkpoint50d_post
2448    o change kpp output from multiple-record state files to single-record state
2449      files analogous to write_state.F
2450    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2451      analogous to the cg2d-related output.
2452    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2453      so that writing to internal file fn (with length 512) fails.
2454    checkpoint50d_pre
2455    
2456    checkpoint50c_post
2457    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2458    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2459    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2460    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2461    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2462    
2463    checkpoint50c_pre
2464    Merging from release1_p13:
2465    o bug fix for pkg/seaice dynamic solver
2466    o Added SEAICE_initialHEFF to pkg/seaice
2467    
2468    checkpoint50b_post
2469    o store u*,v* in gU,V instead of in guNm1,gvNm1
2470    o in order to put the momForcing out of the Adams-Bashforth:
2471      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2472      to timestep.F
2473    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2474    o re-generate output for highly sensitive test-exp:
2475       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2476    
2477    checkpoint50b_pre
2478    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2479    o corrected CPP option mismatch in exf_Bulk... functions for case
2480      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2481    
2482    checkpoint50a_post
2483    o Bug fix for merging between c50 and KPP.
2484      ikey was passed from thermodynamics to kpp_calc via
2485      common block rather than being recomputed in kpp_calc,
2486      in contradiction with new key itdkey.
2487      New key ikppkey created, and tamc.h headers updated.
2488    
2489    checkpoint50
2490    - 2nd step of merge with ecco-branch:
2491      merge changes in ecco-branch back into main trunk
2492    - bug fix in find_alpha
2493    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2494    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2495    - merged some sliced AD support routines
2496    
2497    checkpoint49
2498    merged from ecco-branch:
2499    o exf:
2500      - Enable initialisation of forcing fields to constant
2501        (runtime) values.
2502      - in exf_getffields.F
2503        Reduce i-/j-loop to interior domain, discarding overlaps.
2504        That also fixes wrong TAF-key computations for key_1, key_2
2505        with bulf formulae.
2506      - exf_init.F modify #ifdef for exf_init_evap
2507      - exf_getffieldrec.F, ctrl_getrec.F
2508        The following INT-usages are not safe:
2509          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2510          fldcount = int(fldsecs/fldperiod) + 1
2511        and were modified.
2512    o autodiff: checkpoint_lev...
2513      - updated storing for bulk formulae (some arrays were missing)
2514      - added state for seaice package
2515      - synchronized with main branch
2516    o DIVA:
2517      Modif.s in
2518      - the_main_loop.F
2519      - the_model_main.F
2520      and added cost_final_restore.F cost_final_store.F
2521      o With these changes, it is possible to fully separate
2522        the first forward run to compute the cost function (mdthe_main_loop)
2523        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2524        into separate model executions.
2525        This enables better tuning of DIVA to given queue sizes.
2526      o Loss of cost function value in consecutive DIVA runs is
2527        fixed by storing to 'costfinal' file.
2528      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2529        beginning/end of adjoint integration is accounted for.
2530      The current changes apply to TAF-1.4.26.
2531      TAF has one remaining bug, requiring one manual change
2532      (see MITgcm manual).
2533    o cal: synchronized between MAIN and ecco-branch
2534    
2535    checkpoint48i_post
2536    o Changes to restore differentiability of code w.r.t. previous tag
2537      (mostly adding new routines to make list and replacing
2538      pressure by totPhiHyd).
2539    o Updated and merged grdchk package
2540      - has both ADM and TLM checks
2541      - works for single- and multi-proc.
2542      - output cleaned
2543      - worked successfully for parallel DIVA
2544    o genmake:
2545      - Adding -platform=SP4
2546      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2547    o Modif. for DIVA:
2548      ctrl_unpack should not be called in intermediate DIVA interval.
2549      (similar thing would apply for active files such as
2550      tbar, sbar, psbar, which should not be reinitialised;
2551      only relevant for ecco-branch)
2552    
2553    checkpoint48h_post
2554    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2555    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2556    o Added SEAICE_initialHEFF to pkg/seaice
2557    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2558    
2559    checkpoint48g_post
2560    --- EOS:
2561    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2562      store total Potential in totPhyHyd for diagnostics & EOS.
2563    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2564    --- Pressure/geopotential gradient:
2565    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2566    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2567      ( changes results of global_ocean_pressure )
2568    o NLFS + z-coord.: add eta*Rho' contribution.
2569    o accurate phiHyd when using interface-W at the middle between 2 centers
2570     ( changes results of ideal_2D_oce )
2571    o includes r* 2nd term in potential gradient.
2572    
2573    checkpoint48f_post
2574    Merging from release1_p12:
2575    o Modifications for using pkg/exf with pkg/seaice
2576      - improved description of the various forcing configurations
2577      - added basic radiation bulk formulae to pkg/exf
2578      - units/sign fix for evap computation in exf_getffields.F
2579      - updated verification/global_with_exf/results/output.txt
2580    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2581      (SBO) core products, including oceanic mass, center-of-mass,
2582      angular, and bottom pressure (see pkg/sbo/README.sbo).
2583    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2584      to avoid negative values in shallow regions.
2585      - updated verification/natl_box/results/output.txt
2586      - updated verification/lab_sea/results/output.txt
2587    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2588    o Added useSingleCpuIO option (see PARAMS.h).
2589    o Updated useSingleCpuIO option in mdsio_writefield.F to
2590      work with multi-field files, e.g., for single-file pickup.
2591    o pkg/seaice:
2592      - bug fix in growth.F: QNET for no shortwave case
2593      - added HeffFile for specifying initial sea-ice thickness
2594      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2595    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2596      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2597    o pkg/seaice:
2598      - adjoint-friendly modifications
2599      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2600    
2601    checkpoint48e_post
2602    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2603    o dynamics: change definition of computational domain & adapt mom_fluxform
2604      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2605    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2606        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2607        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2608        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2609        inverted_barometer solid-body.cs-32x32x1
2610      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2611    
2612    checkpoint48d_post
2613    o in preparation for r*:
2614     a) use pre-computed gradient of hydrostatic potential:
2615        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2616     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2617        => affects results of glob_oce_pressure (different truncation error)  
2618      update output.txt of ideal_2D_oce & global_ocean_pressure
2619    
2620    checkpoint48d_pre
2621    o in preparation for r*:
2622      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2623      pass the 2 comp. of the grad. as arguments to momentum S/R.
2624      but for the moment, only used if it does not change the results.
2625    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2626    
2627    checkpoint48c_post
2628    Modifications in treatment of initial flux forcing controls
2629    to avoid extra storing of flux fields.
2630    
2631    checkpoint48c_pre
2632    o Added tidal_basin_2d experiment (currently 1D!)
2633    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2634    
2635  checkpoint48b_post  checkpoint48b_post
2636  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
2637   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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