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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.883 by dimitri, Thu Sep 27 14:42:59 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf: improve vectorization by moving if-statement out of loops
8    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
9    o testreport:
10      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
11        monitor & update offline_exf_seaice exp. output.
12      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
13    o pkg/seaice:
14      - bug fix in the evp solver: boundary conditions were affected be
15        masking of zMax/zMin (changes results)
16      - minor bug fix in boundary conditions in seaice_calc_strainrates
17        (changes results for no_slip)
18      - seaice_lsr.F: make interpolation of eta dependent on boundaries
19      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
20      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
21        stress formulation and no-slip boundary conditions
22    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
23      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
24    o pkg/seaice: a first HSALT time stepping equation has been checked in
25    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
26      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
27      without requiring DO-IF statements
28    o pkg/thsice:
29      use continuous power-law function for partition of energy between lateral
30      melting/freezing and thinning/thickening ; old code using step function
31      still available with #undef THSICE_FRACEN_POWERLAW
32      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
33    o testreport: change AD testing : check against results/output_adm.txt
34      using same scripts as for forward test.
35    
36    checkpoint59g
37    o adjoint testing: in preparation for changing testreport:
38      - output format: cost and grad written on separated lines
39      - ad output results in directory "results" (instead of "results_ad")
40    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
41    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
42    o pkg/ecco: allow user defined cost function contributions
43    o testreport:
44      Allow to choose (per experiment) the list of tested output variables
45       and the main variable (used to issue a pass/FAIL ) ;
46      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
47      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
48      Also modify printing of summary:
49       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
50       b) echo the list of tested variables in the individual summary.txt of
51          each experiment.
52    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
53      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
54      (but still depend on the tile decompostion of the domain).
55    o pkg/seaice: change a discretization detail to make the B-grid code
56      "more symmetric". This change is likely to remove all "ridges/leads" that
57      where quasi-aligned with the grid in B-grid solutions. It may also be
58      the solution to the stress coupling issues with the B-grid.
59    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
60      remove .cvsignore from input dir. (since testreport no longer run here).
61    o pkg/thsice:
62     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
63     - fix reshaping of sea-ice just after advection:
64       melt all the ice only if ice-volume is too small.
65     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
66       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
67     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
68    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
69      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
70    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
71      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
72      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
73      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
74      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
75      -> update output.txt
76    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
77     this affects truncation error: -> update output.txt of exp:
78      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
79      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
80    
81    checkpoint59f
82    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
83    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
84      a bounded range (in forward mode)
85    o pkg/ecco, ctrl, autodiff and mom_common:
86     internal parameter controls, completements of implementations
87    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
88    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
89      (not seem any difference in testing results).
90    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
91       at face corners.
92    o pkg/generic_advdiff:
93     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
94      loop range indices for computing vertical advection tendency
95      and do the calculation in the interior only (no overlap) ;
96      for now, only implemented for SOM advection (to save CPU time).
97     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
98    o exch2 adjoint
99      First set of changes:
100      - add exch2 hand-written adjoint templates
101      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
102        This will require cleanup in pkg/autodiff/*.F
103        (changed routines currently kept separate in verif. code/)
104      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
105        that used to hide exch2 or cubed-sphere specific code
106        (commented via 'cph-exch2')
107    o pkg/seaice
108      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
109    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
110       output of global_ocean.cs32x15.thsice .
111    
112    checkpoint59e
113    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
114      for B-grid vector (not yet tested) and C-grid vector (<- only used
115      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
116    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
117      (#ifdef ALLOW_SALT_PLUME)
118    o gather_2d/scatter_2d: removed halo regions
119    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
120      scheme and the corresponding test case (under front_relax dir). For now,
121      only available with Skew-flux form and not yet tested in realistic set-up.
122      adjoint: store directives updated, but gradient checks deteriorated,
123      so maybe GM/Redi adjoint is now broken.
124    o seaice adjoint
125      * add AREA, HEFF, HSNOW as control variable
126        (should not change lab_sea results)
127      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
128    o pkg/seaice:
129      * added computation of saltFlux in seaice_growth;
130        For time being, sea ice salinity is assumed constant
131        contribution of snow flooding to freshening of sea ice is neglected.
132        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
133        defaults to 0.0 in order to maintain backward compatibility.
134        Typical values for SEAICE_salinity are 4 to 10 g/kg.
135      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
136      * added SEAICE_availHeatFrac, which specifies fraction of surface level
137        heat content used to melt or grow ice
138      * commented out cap of HICE: it helps keep ice thinner
139      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
140      * applied OBCS T/S mask to HEFFM sea ice mask
141    
142    checkpoint59d
143    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
144     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
145     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
146    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
147     and change default value of parameter "GM_Small_Number";
148     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
149       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
150       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
151    o pkg/ecco: cost function when applying pkg/smooth to controls
152    o pkg/ctrl: add forcingPrecond run time parameter
153    o pkg/seaice:
154     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
155     - fix bug in metric terms of u-equation in LSR solver (implicit part),
156       changes verification/lab_sea
157     - rearrange implicit part of u-equation in LSR solver to make it easier to
158       read, understand, and debug. This causes changes at the truncation level.
159     - fix (serious) bug in the boundary conditions (sign error in the implicit
160       part) of the LSR solver. Changes all LSR results.
161     - fixed problem with HSNOW initialization to avoid thick snow when AREA
162       is initilized with small values - does not change lab_sea results.
163     - added HsnowFile initialization capability
164    o pkg/smooth: addition to model/src and pkg/ctrl so allow
165     initialization of pkg/smooth and application to control vector
166    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
167    o dependencies: pkg/profiles requires pkg/cal
168    o pkg/profiles:
169     - added option ALLOW_PROFILES_GENERICGRID
170         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
171         that interpolation information (grid points and coefficients) is provided
172         within the netcdf input files.
173         -> sample matlab scripts can be found in MITgcm_contrib/gael
174         that allow you to prepare netcdf input files.
175     - also modified: cleaner include statements, cleaner error print statements,
176       cleaner stops when error, and more tests of the netcdf input files consistency.
177    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
178    o pkg/seaice:
179     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
180       requires a new routine: seaice_diagnostics_fill.F
181     - make sure that seaice does not move if not forced (pressure replacement
182       method, Hibler and Ip, 1995), changes results
183     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
184     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
185       It is turned off by default (=-1.), because it changes the results.
186     - make it possible to read AREA from a file, too.
187    
188    checkpoint59c
189    o add S/R and diagnostics for oceanic mixed-layer depth
190    o move GMRedi call after all vertical mixing schemes (including KPP)
191    o pkg/thsice:
192     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
193      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
194    o pkg/obcs:
195     - bug fix for balance code
196    o pkg/seaice:
197      - allow values of SEAICE_elasticParm > 1
198      - add new parameter SEAICE_evpTauRelax as an alternative
199        to SEAICE_elasticParm
200      - make lsr boundary conditions free slip (by default), changes result
201      - add code for no slip boundary conditions for lsr
202      - set minimum of zeta to zero (and not 4e8) (changes results)
203      - add a cap on AREA after advecting AREA if seaice_growth is not called
204    o change calculation of Visbeck K:
205      - no longer depend on tapering scheme; instead, compute slope (limited
206        by GM_maxSlope). this is equivalent to what was comuted before with
207        clipping or linear tappering.
208      - fix vertical averaging (wrong by 1/2 level)
209      - leave the old version (but will not be maintained) within
210        #ifdef OLD_VISBECK_CALC / #endif
211      - update output of exp. ideal_2D_oce
212    o change error catch in calc_r_star to improve vectorization
213    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
214      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
215    o adjoint:
216      Re-organized adjoint checkpointing according to Matt Mazloff
217      (but with modifs/completions/cleanups)
218      Storing is now bundled into large arrays to optimized I/O
219      (and second step in cleanup of the_main_loop)
220    
221    checkpoint59b
222    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
223      - export/import (between ocean & coupler) fields needed for ocean DIC.
224    o pkg/seaice:
225      - get rid of three more exchanges seaice_calc_viscosities (required
226        different loop boundaries in seaice_lsr and seaice_ocean_stress)
227      - bug fix in seaice_ocean_stress (update of lab_sea required)
228      - reduce loop boundaries to necessary minimum also in seaice_evp
229      - go back to the old way of computing deltaC/Z as the adjoint likes that
230        better
231    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
232      passive tracer to an Age Tracer) + update output.txt
233    o pkg/exf:
234      - implement A-grid / C-grid selection for wind-stress input files.
235      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
236      for now, in exf_bulk_largeyeager04.F only :
237      - change implementation for case where windspeed + 2. components wind-stress
238        are read-in. AND use rhoConstFresh to convert evap.
239    o pkg/seaice:
240      - use correct EXCH_UV for wind-forcing (on A-grid).
241      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
242        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
243    o pkg/exf:
244      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
245      EXF_INTERPOLATION:
246      - merge global_with_exf/code version of exf_interp_read.F
247        to the main code ;
248      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
249        reading the file ; Important: This options needs to be defined to recover
250        previous code.
251        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
252      - no longer loose real*8 precision along the way when using exf_iprec=64.
253    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
254      - change discretisation of evp-solver in order to avoid another exchange
255        (changes lab_sea) and clean up a little
256      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
257        help the adjoint (this also changes the results slightly)
258      - add a few "_d 0" where they had been missing in seaice_evp.F
259      - cleaning up: remove unused seaice_calc_rhs.F
260    o pkg/exf: some cleaning-up:
261      - change various "constants" into runtime parameters
262      - cleaned-up Large&Yeager04 routine which should eventually
263        replace exf_bulkformulae.F (changed names of S/R and CPP)
264        and merged various ALLOW_ATM_WIND options
265     only used with thsice pkg (in thsice_get_exf.F):
266      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
267        which are used when useStabilityFct_overIce=TRUE (= the default)
268      - change default values of ice & snow emissivity and scale downward LW
269        by ice & snow emissivity.
270    o pkg/thsice:
271     fix few little problems, in thsice_calc_thickn.F:
272      - growth vertically (and not laterally) if iceFrac == iceMaskMax
273      - melt only laterally if hIce < hThinIce (as the comments say)
274      and in thsice_extend.F:
275      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
276      - start to form ice as soon as the minimum ice-volume is reachable.
277     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
278      and cpl_aim+ocn
279    o pkg/kpp
280     - move computation of surface related input fields to KPP into a new
281       subroutine kpp_forcing_surf.F
282     - remove wrong (within bi,bj loops) EXCH calls.
283     - little cleaning (add argument myThid in last position, cvs header ...)
284     - for now, fix conservation problem by exchanging KPPviscAz (may not
285       be the best fix)
286    o pkg/seaice
287     - check for inconsistent evp parameter/cpp-flag combination
288     - remove leftover errIO flat for obsolete name list error handling
289    o OpenAD
290     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
291    
292    checkpoint59a
293    o pkg/seaice: some parameter clarifications and a little bit of clean up
294    o pkg/thsice: rename run-time parameters:
295       himin       -> hIceMin
296       himin0      -> hThinIce
297       hihig       -> hThickIce
298       i0          -> i0swFrac
299       transCoef   -> bMeltCoef
300       frac_energy -> fracMelting
301      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
302       with default values (for now) that do not change the results.
303      remove old version of thsice vars advection in pkg/seaice.
304    o in FFIELDS.h:
305      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
306      - make pLoad & sIceLoad always available (but still only used if
307         ATMOSPHERIC_LOADING is #define).
308    o pkg/kpp: replaced _KPP_RL with _RL
309    o bug fixes for vertical diffusivity computations when both KPP and
310        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
311        are no longer updating the vertical diffusivity array
312        (passed as argument) but are (re-) setting those arrays.
313    o pkg/seaice: fix bug in evp solver, while doing that
314      - change (improve?) discretization of stress computations for both
315        cgrid-lsr and evp solver
316      - add a new routine to compute strain rates
317      - the above changes lab_sea results
318      - add no slip conditions for evp solver (off by default), lsr-version
319        may follow
320      - fix exchange for shear at Z-points (does not change lab_sea)
321      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
322        (to force the user to pick a time step since there is not "safe" way
323        of choosing it)
324      - add principal stress diagnostics
325      - rearrange fields for evp a little to avoid having to call a: too many
326        exchanges and b: exchanges for stress trensor components which we do
327        not have.
328      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
329        of evp, complete rewrite for lsr case (latter is does not yet work
330        in all cases)
331    o pkg/kpp: add code to have mixing in shelf ice caverns
332      - add myThid to all kpp routines (long overdue)
333    
334    checkpoint59
335    o pkg/exf:
336      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
337        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
338      - move exf header files from lower_case.h to UPPER_CASE.h ;
339        add missing cvs Header & Name
340      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
341      - add namelist param. selectStressGridPosition, exf_monFreq
342      - retire many _CLIM routines, and remove data.exf_clim
343        + params moved to data.exf
344        + climsst, climsss now handled by exf_set_gen, i.e.
345          climss?period=0 refers to constant field,
346          climss?period=-12 to monthly forcing
347      - split up namelists in data.exf
348    o pkg/seaice:
349      - remove seaice_exch and seaice_exch_uv
350      - remove superfluous exchange of theta
351      - add myThid to seaice_budget_ocean/ice
352      - add new interface for atmospheric wind forcing (C-grid only)
353        + new routine
354        + two new field (taux, tauy for stress over ice)
355        + removed one global field (DAIRN) for C-grid case only
356    o pkg/thsise
357      - 2nd set of modifs for thsice adjoint in conjunction with exf
358    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
359    
360    checkpoint58y_post
361    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
362      vertical diffusivity, similar to that in MOM4; turned on using
363      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
364      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
365    o Added capability for 3D specification of background vertical diffusion
366      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
367      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
368      "data" file that contains the 3D vertical diffusivity coefficients.
369    o ice dynamics (pkg/seaice) with thsice thermodynamics:
370      - add code within pkg thsice to advect & diffuse sea-ice fields
371      similar to (and will replace) what has been added in  seaice_advdiff.F,
372      but: - conserving Mass, Heat & Salt.
373           - better when using non-linear advection scheme (not yet fully tested)
374           - can also be used in atmospheric set-up (for now, only the diffusion).
375    
376    checkpoint58x_post
377    o IO option for global-file compact format:
378      - add options when generating topology (utils/exch2/matlab-topology-generator)
379      - add I/O capability (pkg/mdsio).
380      - adapt utils/matlab/rdmds.m to read this format.
381      for now long-line format not yet supported by pkg/mdsio (& exch2).
382    o shelfice: add a few diagnostics
383    
384    checkpoint58w_post
385    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
386      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
387      (and replace horiVertRatio in NH code).
388      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
389                         and tutorial_plume_on_slope (sensitive to truncation)
390    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
391      directly to drive seaice model (C-grid only)
392    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
393     - reintroduce computation of wind from stress,
394     - compute tau (in exf_bulkformulae.F) from windstress averaged to
395       mass points to avoid tau = 0
396     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
397    o rdmnc.m: make it work with "global" files created with gluemnc
398    o rdmnc.m : some improvements in dealing with singleton dimension
399      (tested on all testreport mnc output files).
400    o genmake2: disable pkg/profiles if netcdf test fails.
401    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
402    o move call to cal_readparms up to make calendar parameters/variable available
403      to all packages
404    
405    checkpoint58v_post
406    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
407      useDynP_inEos_Zc tested.
408    o pkg/exf: changes to properly interpolate/mask/scale initial fields
409    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
410      and portions thereof.  See read_cs.txt for description and examples.
411    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
412      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
413      following the great-circle arc between those 2 points.
414    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
415      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
416    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
417     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
418     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
419     - still needs work (not working with some options ; efficiency to improve)
420       and serious testing.
421     - use this scheme for temperature & salinity in 2 advection test exp.:
422       advect_xy & advect_xz, respectively.
423    
424    checkpoint58u_post
425    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
426    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
427    o testreport: add option "-skipdir" to skip some test.
428    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
429      momentum calculation.
430    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
431    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
432      remove checkpoint.F and the_correction_step.F (no longer used);
433      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
434    o add option (linFSConserveTr) to correct for tracer source/sink due to
435      Linear Free surface
436    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
437    o pkg/thsice: fix reading mnc-pickups
438    
439    checkpoint58t_post
440    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
441    o pkg/mdsio:
442     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
443       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
444       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
445     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
446     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
447       either MDS_READ_FIELD or MDS_WRITE_FIELD )
448     - new S/R (to replace MDSWRITEMETA), which allows to write more
449       informations (variable names, time ...) to meta files.
450     - modify rdmds.m to give back the meta file content.
451    o pkg/diagnostics: change vertical interpolation to be safer, and more
452       flexible (define p-levels to interpolate to in data.diagnostics);
453      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
454       diagnostic pointer.
455    o pkg/seaice: more cleaning up of seaice_growth, added many comments
456    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
457    o fix multi-category seaice:
458     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
459       SEAICE_MULTICATEGORY
460     - fix short wave heat flux
461    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
462       and allow to use EVP solver. Change forward lab_sea: test both EVP
463       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
464    o Initial check-in of lab_sea adjoint
465      (very similar to natl_box_adjoint/code_seaice)
466      * used C-grid and EVP solver
467      * used KPP, GM/Redi
468      * uses inAdExact=.TRUE.
469      * gradient checks fail for both ADM and TLM
470        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
471        f.d. gradients actually seem more problematic than ADM, TLM gradients;
472        issue is related to forward mismatch between g77 an ifort
473    o pkg/seaice: overhaul of thermodynamics
474     - growth.F and groatb.F are replaced by new routine seaice_growth.F
475     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
476     - move a few global fields out of SEAICE.h into seaice_growth.F and
477       make them 2D (FICE/QNETO/ ...)
478     - remove FO (it is the same as QNETO)
479     - introduce a few local fields to avoid modifying external fields such
480       as atemp, etc.
481    
482    checkpoint58s_post
483    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
484      changed exf_set_gen.F so that
485        genperiod=0 means input file is one time-constant field and
486        genperiod=-12 means input file contains 12 monthly means
487    o CG2D: use pre-computed solver main-diagonal (stored in common block);
488      this affects truncation error ; generate new output file for exp. which
489      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
490        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
491        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
492        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
493        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
494        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
495    o start implementation of deep-atmosphere and anelastic formulation
496    o verification: remove 2nd copy of input files and use script "prepare_run"
497      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
498    o mom_common/vecinv/fluxform: fix a few initialisation isssues
499    o profiles: fix for multithreaded case
500    
501    o diagnostics: rename few diags:
502      s/'PRESSURE'/'RCENTER '/g
503      s/'TICE    '/'oceFreez'/g
504      s/'TAUX    '/'oceTAUX '/g
505      s/'TAUY    '/'oceTAUY '/g
506      s/'SWFLUX  '/'oceQsw  '/g
507      s/DIFx/DFxE/g
508      s/DIFy/DFyE/g
509      and add few ocean-forcing diagnostics:
510      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
511    o modifications to pkg/seaice/growth.F and budget.F, which change results of
512      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
513      as actual snow thickness.  It now refers everywhere to effective snow
514      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
515    
516    checkpoint58r_post
517    o modifications to pkg/seaice/growth.F, which change results of
518      lab_sea experiment: fixes pertain to melting snow over open water, to
519      masking EVAP under sea ice, and to using the correct AREA variable for
520      computations of EVAP, PRECIP, HSNOW, and GHEFF
521    o add ability to read bathy, salt, and theta using MNC (off by def)
522    o add flooding algorithm and advection of HSNOW for pkg/seaice;
523      both are turned off by default and do no change any results
524    o seaice advection with pkg/thsice: a step toward the use of non-linear
525      advection scheme, but #ifdef or commented out for now (requires more EXCH).
526    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
527      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
528      in natl_box (affects results @ truncation level: update output.txt)
529    o multi-threading and IO:
530      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
531      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
532        (needed to work with SingleCpuIO): tested in all verif. exp.
533    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
534      affects the results (but none of the verification test uses this scheme).
535    o Adding some pkg/diagnostics capability to pkg/seaice
536      (will certainly be subject to changes)
537    o ctrl: adding new control variables:
538      lwflux, lwdown, evap, snowprecip, apressure, runoff
539    
540    checkpoint58q_post
541    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
542      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
543      high_res_cube configuration by 4% on Columbia.
544    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
545      add (in global_with_exf/code) a version of EXF_INTERP_READ without
546      dynamical allocation (seems to work in multi-threaded).
547    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
548      single CPU io) so that TAF does not have to see EESUPPORT.h
549    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
550    
551    checkpoint58p_post
552    o obcs: stop if obcs is used with useCDscheme = .true.
553    o shelfice:
554     - fix a sign error so that no slip at shelfice interface works
555     - remove stop for combination non-hydrostatic code and shelfice. That does
556       not mean, that the results are correct, but at least they are numerically
557       stable
558    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
559    o added adjoint exch routined for all exch*3d* routines
560      and updated flow directives
561    
562    checkpoint58o_post
563    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
564      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
565    o change controling S/R for writing pickup file (new S/R do_write_pickup)
566      and clean-up reading/writing of pickup files.
567    o fix local version of read/write pickup (NH part) in rotating_tank/code
568    o simplify EXCH interface:
569     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
570     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
571    o added the regrid package
572    o shelfice:
573     - add a simple boundary layer scheme to reduce noise
574     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
575    
576    checkpoint58n_post
577    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
578       local variable (not in common block).
579    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
580      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
581      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
582        to work with SingleCpuIO.
583    o add "_d 0" to real constant of pkg/cfc subroutines ;
584       update exp. cfc_exemple & tutorial_cfc_offline output files.
585    o multi-threading and IO:
586      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
587        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
588      - barrier before and after reading.
589      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
590      - avoid using MDS_WRITELOCAL for LAND pkg output.
591      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
592        common-block variables ; Allows multi-threading with master-thread IO.
593    o change default MAX_NO_THREADS from 32 to 4 ;
594      and stop cleanly when MAX_NO_THREADS is too small.
595    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
596    
597    checkpoint58m_post
598    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
599       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
600    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
601       keep global_ocean.90x40x15 (for AD testing) with former secondary test
602       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
603    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
604        add MITgcm_tutorials (= code + all the tutorials)
605    o ecco, option to compute cost for total ssh (mean+anom)
606    o consistent with addition of ptracer and ssh in pkg/profiles
607    o profiles: adding ptracer and ssh
608    o testreport: change multi-test output-file name
609      (from output.txt.{name} to output.{name}.txt)
610    o profiles: now ok for mutli-tiles case
611    o seaice: add 4 parameters for different advection schemes for area,
612      (effective) seaice thickness, enthalphy, and snow height. Their default
613      is the standard parameter SEAICEadvScheme
614    o calc_gw:
615     - add cosFacU in zonal viscous flux (harmonic.visc.).
616     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
617       of tutorial_plume_on_slope.
618    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
619    o calc_gw: true flux-form, account for horizontal grid spacing.
620      update rotating_tank results, but not plume_on_slope (affected at
621      truncation level, 11 digits).
622    
623    checkpoint58l_post
624    o calc_gw:
625     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
626     - remove side-drag for now (need to fix it); update plume_on_slope results.
627     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
628    o commit code to make SST/SSS weights spatially variable
629      (based on either variable in-situ or variable initial T/S weights)
630    o pkg/ecco:
631      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
632        now based on horizontally varying weights wthetaLev, wsaltLev
633      * cost_averagesflags now returns year indices in addition to day, month
634      * sflux balance is performed on annual basis
635        (sflxumm, sfluxmm2, bal_sfluxmm)
636      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
637        including separate counting and multipliers
638    o pkg/rbcs
639      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
640    
641    checkpoint58k_post
642    o testreport:
643     - always build in dir. "build" (if not there, mkdir build instead of building
644       & running in input)
645     - run in dir run (if it exists), in build otherwise.
646     - call prepare_run (if input/prepare_run exists)
647     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
648    o pkg/exf modifications to interpolation and rotation routines for more
649       reasonable treatment of North Pole singularity: for tracers North Pole
650       value is set to northernmost zonal-mean value, for zonal velocity it is
651       set to zero, and for meridional velocity it is set to northernmost value.
652    o pkg/exf/exf_check_range.F
653     - add tile index to diagnostics and move stop statement to the very
654       end of the routine.
655    o pkg/diagnostics: (diagnostics_main_init.F)
656      define title of isomorphic variables according to the current config.
657    o pkg/thsice with pkg/seaice dynamics:
658    - fix domain of computation (interior only, required for exf) and do exchanges
659    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
660    o towards a standard way of dealing with multi-threading in MONITOR
661      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
662    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
663       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
664    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
665    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
666    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
667       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
668    o tracer advection:
669     - clean-up and simplify calc_common_factors.F
670     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
671       advection subroutine (but still not used within DST advection S/R)
672    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
673    
674    checkpoint58j_post
675    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
676      from file (collects calls previously in FORWARD_STEP)
677    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
678    o adjoint store dir. adjusted accordingly
679    o genmake2
680      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
681    
682    checkpoint58i_post
683    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
684      on wind stress (SEAICEstressFactor defaults to 1.)
685    o Total number of Timers is finite (<=40): comment out 2 non-essential one
686      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
687    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
688      on CS-grid: no longer loosing mass.
689    o exf & curvilinear-grid: no longer modify longitude xC & xG.
690    o pkg/ggl90: fix sloppy output and fix a bug
691    o pkg/seaice: added SEAICEuseEVPpickup parameter
692      - Set to false in order to start EVP solver with
693        non-EVP pickup files when using SEAICEuseEVP
694      - fix sign error in diffusion in seaice_calc_rhs
695    
696    checkpoint58h_post
697    * Modifications for bottom topography control
698      o replace hFacC by _hFacC at various places
699      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
700      o add non-self-adjoint cg2d_nsa
701      o update autodiff support routines
702      o re-initialise hfac after ctrl_depth_ini
703      o works for 5x5 box, doesnt work for global_ocean.90x40x15
704    * Adding verification for 5x5 box (4-layer) bottom topography control
705    
706    checkpoint58g_post
707    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
708       used for mean seasonal cycle, mean diurnal cycle); add an example
709       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
710    o pkg/ggl90:
711      - add parameter (minimum surface kinetic energy)
712      - fix bug (avoiding division by zero)
713    o couple pkg/thsice to pkg/seaice:
714      - modify advection in seaice to accomodate new scalar fields to be advected
715      - only muliDimAdection scheme work with seaice/thsice
716      - mapping of thsice-variables to seaice-variables, back and forth
717      - does not break the verification experiments, but does not give the
718        desired results either
719    o pkg/seaice
720      - make (default) second order advection a bit less confusing?
721    
722    checkpoint58f_post
723    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
724      to pkg/seaice):
725      - new routines thsice_map_exf and thsice_get_exf provide the interface
726      - add an additional formal parameter to thsice_solve4temp
727    o pkg/exf:
728      - add new fields wspeed, snowprecip (to be able to couple to thsice)
729      - correct Stefan-Boltzmann constant
730      - new parameter for longwave surface emittance
731      - separate some stuff from exf_bulkformulae into new routines  
732        exf_radiation, exf_wind
733      - add new parameters and constants: longwave emissivity for ocean, ice
734        and snow, evaporation parameters over ice
735      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
736        either wind from stress or stress from wind
737    o pkg/thSIce:
738    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
739    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
740       and THSICE_CALC_THICKN
741    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
742    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
743      to make debugging easier.
744    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
745    o pkg/bulk_force:
746      - clean-up comments and parameters ;
747      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
748    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
749      generate new output for test-experiment: aim.5l_cs.thSI
750    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
751      testreport accordingly
752    
753    checkpoint58e_post
754    o SEAICE_CGRID adjoint done
755    o R_STAR adjoint implemented.
756      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
757      * need to sort out init. of h0facc, etc.
758    o Make pkg/profile fully independent of ecco,cost, etc. stuff
759      to be able to use it in pure forward.
760    
761    checkpoint58d_post
762    o upgrade simple test-experiment to tutorial example:
763     step.1: duplicate the experiment and (step.2) will remove the old copy.
764      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
765      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
766      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
767      tutorial_global_oce_biogeo    <- copy of dic_example
768      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
769      tutorial_plume_on_slope       <- copy of plume_on_slope
770      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
771      tutorial_global_oce_optim     <- empty for now (David ?)
772      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
773     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
774    o correct a sign problem in cost_scat.F
775    o obcs and ptracers: fix boundary conditions for advections schemes
776      with larger stencil
777    o thsice adjoint: start
778    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
779      completeness
780    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
781      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
782    o ptracers adjoint:
783      * avoid extensive recomputatations
784      * fix missing re-init. of gptr (missed by TAF)
785    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
786      me to turn off the excessive output to STDOUT that this package produces
787    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
788      and add those terms in Vector-Invariant formulation.
789    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
790      if the control period (xx_hfluxperiod etc) is 0
791    o in profiles pkg, clean routines and fix details
792    o in ecco pkg, reading ssh data:
793      fix problem in case the model does not start at iter0=0
794    o fix mnc-pickup/restart for ptracers
795    o new package prifiles:
796      code to compute profile-based cost by Gael Forget
797      (modifs in ecco, ctrl, autodiff)
798    o Benign bug fix in initialization (spotted by M. Mazloff) of
799      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
800    
801    checkpoint58c_post
802    o adjoint: finish NLFS adjoint and provide reference output in
803      verification/global_ocean.90x40x15/results_ad_nlfs
804    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
805      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
806      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
807      with SEAICE_CGRID defined.
808    o move calendarDumps from "data" to "data.cal" and clean-up the code
809      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
810    o add useEXF & useCAL flags (for now, set in hard-coded way)
811    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
812      (were missing in NH mode, and wrong in quasihydrostatic mode).
813      waiting for Chris updated version of calc_gw to add those CALLs.
814    o fix bug in quasihydrostatic S/R ;
815      add a test for this option: global_ocean.90x40x15.qshyd
816    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
817      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
818    o add on/off flag useOffLine for package OFFLINE
819    o seaice:
820      - modify advection so that it works also on the C-grid
821      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
822        problem in multi-tile runs with C-grid
823      - add flags for clipping ice velocities and/or masking solver forcing
824      - fix drag (ocean on ice) formulation and a bug that caused noise in the
825        C-grid solver
826      - added a few comments to seaice_diffusion.F
827      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
828        are now exclusive)
829      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
830        required re-ordering the code a little:
831       + make DAIRN global variable (defined in SEAICE)
832       + move computation of the viscosities eta and zeta into a new separate
833         routine (because I need to recompute them in seaice_ocean_stress.F)
834    
835    checkpoint58b_post
836    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
837      update output.txt of exp. aim.5l_cs.thSI
838    o various mnc cleanups and improvements:
839      + shrink lookup tables by factor of ~4
840      + better error reporting when running out of lookup space
841      + able to handle longer path/file names (up to 500 chars)
842    o adjoint:
843      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
844      - TBD: "hidden" mom_vecinv recomp. in dynamics
845    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
846     (allow to differentiate between forcing components using new integer flags:
847      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
848     and add new flag to put Dissipation tendency out of Adams-Bashforth.
849    o ecco
850      - enable trend removal from SSH anomaly obs.
851    o adjoint
852      - a fix for PmEpR when #undef EXACT_CONSERV
853      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
854      - try to fix "hidden" recomp. in forward_step for NLFS
855        (NLFS seems broken sometimes after I checked it in)
856    o seaice:
857     - add c-grid version of the dynamic solver:
858       + three new routines that are the c-grid substitute lsr, dynsolver
859         and ostres
860       + put a few fields that were local to dynsolver into global common
861         blocks, so that I can move the computation of stresses etc into
862         seaice_lsr (saves coding but may break the adjoint).
863     - replace more hardwired parameters by runtime parameters
864     - add ice masks that mask the rhs of the implicit solvers where there
865       is no ice (commented out in seaice_dynsolver, because i am not sure
866       if this works properly), eventually this should replace the clipping
867       of ice velocities in seaice_dynsolver to +/-40cm/s.
868    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
869      include it only where its needed
870    o move balancing of fluxes before the call of external_forcing_surf
871    o seaice:
872      - correct units of turning angles (now they are really in degrees)
873      - move computation of GWATX/Y out of main routine into dynsolver
874      - initialize GWATX/Y in seaice_init
875    o Apply mask on Fresh-Water flux (needed for SSH forcing).
876      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
877    o seaice: add runtime flags for turning angles (default to zero)
878    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
879      and trend from exf forcing and ctrl control adjustments
880    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
881      (since checkpoint57x_post)
882    o change the default rotation period to 86164.s = the Earth rotation
883    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
884      and based on a reference stratification. Tested within hs94.cs-32x32x5.
885    o seaice advection: add code for choosing between the default (2nd order
886      central differences) and multiDim advection schemes provided by
887      pkg/generic_advdiff
888    o seaice:
889      - removed all references to SEAICE_GRID.h fields from
890        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
891        (cubed-sphere configuration will change a little)
892      - grid computations in seaice_init are obsolete now.
893      - cleaned up code a little so that is easier to read (hopefully).
894      - added new (better?) discretizations of default advection and diffusion
895        (turn on with SEAICEuseFluxForm)
896      - replace 1 in 3d global fields by kSurface in growth.F
897      
898    checkpoint58a_post
899    o seaice:
900      - bug fix in advect.F
901    o shelfice:
902      - separate shelfice load anomaly from pload (breaks with time
903        dependent forcing), => introduce constant field shelficeLoadAnomaly.
904        Its default is 0., but it may be computed more cleverly from (unknown)
905        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
906        done offline. A good approximation of the pressure load anomaly is
907        necessary to avoid large initial adjustment processes underneath
908        deep-reaching shelfice.
909      - small fix in ISOMIP shelfice_thermodynamics
910      - add more sophisticated thermodynamics of Hellmer (1989), this is
911        now the default
912      - give a few constants more intuitive names
913    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
914      if bulk formulae are used in long integration (especially EmPmR). Turn
915      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
916      if balancePrintMean, the imbalance that is substracted is printed to
917      STDOUT.
918    o fix bug (typo) in obcs_apply_eta.F
919    o add a new package shelfice which enables us to model the circulation
920      underneath shelf-ice with draughts of hundreds of meters.
921     - works
922     - to do: + include improved thermodynamics
923              + check whether kSurfC (from model/inc/SURFACE.h) can be used
924                instead of new field kTopC
925              + can we use topoFile, Ro_surf and existing code in ini_depth.F
926                instead of new field R_shelfIce and new code in ini_depth.F
927                and ini_mask_etc.F?
928              + adjust vertical mixing schemes?
929    o seaice pkg:
930     - add a cpp-flag to include a simple formula for a salinity dependent
931       freezing point of sea water at the surface
932     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
933       meridional stresses are now different (and hopefully correct)
934    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
935       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
936       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
937    o pkg/diagnostics: add options and parameters for regional-statistics
938       diagnostics ; define regions by reading a region-mask from a file
939       (might add other options later)
940    o pkg/bulk_force:
941     - add option and parameters to use AIM surface-flux formulae.
942     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
943       others forcing fields (defined in PARM05, parameter file "data") are loaded
944       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
945     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
946     - use the right EXCH call for uwind,vwind (to work on CS-grid).
947     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
948       and parameters (note: calcWindStress replaces .NOT.readwindstress).
949     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
950    
951    checkpoint58
952    o add "--embed-source" option to genmake2 which, when the supporting
953      tools can be compiled (as determined by genmake2) will turn on the
954      embed_files package which then embeds the entire MITgcm source code
955      (*.[fFhc] + Makefile) used for the build within the executable
956      - requested by CNH but off by default
957      - adds a paltry <9MB to the mitgcmuv executable in most cases
958      - only writes the output when useEMBEDSRC in eedata is true
959    o clean up 3-dim. relaxation codes:
960      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
961      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
962      * Thanks to Tom Haine for testing!
963    
964    checkpoint57z_post
965    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
966      affects output (@ truncation level) of exp. plume_on_slope ; updated.
967    o fix the pickup behavior for obcs in combination with ptracers
968    o fix a bug in ptracers_external_fields_load
969    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
970      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
971    o transfered surface NH pressure to eta field (if exactConserv).
972    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
973         and update lab_sea output.txt file.
974    o completing 3-dim. relaxation code: additional term
975         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
976      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
977      * At compile time, in "EXF_OPTIONS.h" set
978          #define  ALLOW_CLIMTEMP_RELAXATION
979          #define  ALLOW_CLIMSALT_RELAXATION
980      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
981          tauThetaClimRelax3Dim = 15552000.0,
982          tauSaltClimRelax3Dim  = 15552000.0,
983      * 3 cases:
984          1) Use a constant-in-time 3-dim. field
985          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
986          3) Real-time relax. to time-evolving prescribed field
987    o Adding Laplacian-type smoothness constraint on
988      initial and boundary (forcing) controls (ic, bc)
989      * enable at compile-time via
990        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
991      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
992      * Absolute scale somewhat unclear so far
993      * no area weighting was included since no other cost term does so far
994    
995    checkpoint57y_post
996    First step for a NLFS adjoint
997    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
998    o new init. routines for calc_r_star, calc_surf_dr
999    o still need to deal with ini_masks_etc
1000    o testreport seemed happy
1001    checkpoint57y_pre
1002    
1003    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1004    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1005    o add new offset feature to offline pkg (plus minor cleanup)
1006    o cfc fixes for final year of integration
1007    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1008      be in GCHEM_OPTIONS).
1009    
1010    checkpoint57x_post
1011    o fix testreport Pb in multiple test experiment.
1012    o cleanup our namelist syntax in verification:
1013      - make it more F95 standards compliant (some work still needed)
1014      - allows the vast majority of our tests to work with gfortran
1015    o Non-Hydrostatic:
1016     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1017     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1018    o Allow to apply AB on T,S rather than on AB(gT,gS):
1019     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1020     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1021       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1022     - need a "clever" read_pickup to restart from the other AB formulation
1023    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1024    o remove some unused variables (reduces number of compiler warnings)
1025    o adjoint
1026      * Disable useVariableViscosity for adjoint for time being
1027        (there are a number of extensive recomputations)
1028      * Initialize certain variables needed for adjoint
1029    
1030    checkpoint57w_post
1031    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1032                 fix the singleCpuIO RS version of MDSWRITEFIELD
1033       and add a WARNING if using globalFiles=T with multi-processors.
1034    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1035      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1036    o tracer advection scheme:
1037      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1038       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1039       was not very convenient).
1040      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1041       (further tests needed for the implicit DST & Flux-Limiter schemes).
1042    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1043      and sRef for convenience, handy, when you want to initialize
1044      ptracers in a large domain with a constant non-zero value. Also,
1045      untangle ptracers_init.F a little.
1046    
1047    checkpoint57v_post
1048    o change dome exp. to use variable viscosity in side-drag terms.
1049    o remove all the files from the cfc_offline test since they are now
1050      incorporated into tutorial_cfc_offline which has been producing
1051      identical results for a few days of testing
1052    o add new parameter: sideDragFactor to enable half-slip-side BC
1053      and change side-drag S/R to use viscosity from mom_calc_visc
1054      (can switch back by setting sideDragFactor=0.); affects results at
1055      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1056       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1057    o vorticity & strain are now computed without masking, to account for
1058      no-slip-side BC in variable viscosity calculation ; mask is applied
1059      anyway later on, before computing advection/coriolis terms.
1060    o modify exp4 to test new obcs support for reading from external files
1061      and for passive tracers
1062    o fix behavior of ptracers_monitor when monitor output is written to a
1063      netcdf-file; still not independent of monitor.F (writes in the same
1064      file).
1065    o change default value of tRef (put a uniform, meaningful value for ocean
1066      & atmos) and initialize sRef (was missing, as Martin mentioned).
1067    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1068      to be proportional to enstrophy dissipation length.  Thus,
1069       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1070      This is now consistent with Smagorinsky and with the manual.
1071    
1072    checkpoint57u_post
1073    o OBCS and PTRACERS: add open boundary support for passive tracers
1074      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1075        OB-values from file; this is not different from the way theta and salinity
1076        are treated
1077      - however, Orlanski-radiation conditions are not supported, and the model
1078        will stop if you use pTracers and Orlanski at the same time.
1079      - beefed up the rountine obcs_external_fields_load: now only those open
1080        boundary values are overwritten with values from files for which there
1081        are really files, otherwise the OB-fields remain untouched. This makes
1082        it possible to use different OBs at different ends of the domain (as
1083        with EXF)
1084    o reduce number of exch calls in shap_filt (s2).
1085    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1086      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1087    
1088    checkpoint57t_post
1089    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1090    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1091      same truncation, independent of the face number: affects affects several
1092      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1093    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1094      note that biharmonic viscosity + no-slip was not tested in any experiment.
1095    o fix bug in non-linear free-surf side-drag ; generate new output for
1096      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1097    o make mnc honor the writeBinaryPrec flag for most kinds of output
1098    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1099    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1100      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1101    o add brackets in multi-terms sum to get same truncation, independent of
1102      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1103      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1104    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1105      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1106      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1107      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1108      Suggested values of viscosity parameters found in mom_calc_visc.
1109      Many new viscosity diagnostics available.
1110    
1111    checkpoint57s_post
1112    o Add clearing-house for viscosity calculations, mom_calc_visc and
1113      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1114      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1115      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1116      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1117      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1118      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1119      ViscAhStrain and viscAhTension are now retired.
1120    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1121    o In response to JMC's bug report, genmake2 now ignores any soft-links
1122      that it finds in the *current* directory when searching for files.
1123      Soft-links found in any other source directories will still work as
1124      they did before.
1125    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1126      a C routine to unlimit the stack size
1127    o mnc-ify pkg/aim snapshot vars
1128    o mnc-ify pkg/land as requested by Daniel
1129    o various changes to mnc including:
1130      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1131      - output can now be grouped so that all files within a group
1132          change the ITER portion of their names in lock-step together
1133      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1134          and works with both EXCH1 and EXCH2 (but needs more testing)
1135      - writing works for all verification test cases w/ g77 on Linux
1136    
1137    checkpoint57r_post
1138    o make MNC variable initialization happen earlier
1139    o add diagnostics for (almost) each term of the momentum Eq.
1140    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1141    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1142    o remove MINIMAL_TAVE_OUTPUT option ;
1143      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1144    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1145      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1146    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1147    o add time-dependent SST, SSS control
1148    o cost terms in ecco/ modularized (new cost_generic.F)
1149    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1150    o new infrastructure for seaice model vs. obs misfits in seaice/
1151      * driver from the_main_loop.F is seaice_cost_driver.F
1152      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1153      * gradient check in Exp. 6a of natl_box_adjoint/
1154    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1155      (see README file)
1156    
1157    checkpoint57q_post
1158    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1159    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1160      - bug was reported by Jean-Michel and Ian Fenty
1161    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1162      update exp. cpl_aim+ocn output.
1163    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1164      Needed for high-res. runs with large global files
1165      to be able to limit tapelev size
1166    o Changed some tests for adjoint:
1167      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1168      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1169      * global_ocean.90x40x15/ back to default 3-level checkpointing
1170    o Modifications to enable scripted COMMON to MODULE conversion
1171      * verification/OpenAD/code/ has necessary scripts and description;
1172      * converts, compiles and runs successfully;
1173    
1174    checkpoint57p_post
1175    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1176    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1177      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1178    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1179    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1180      (was already the case for dissipation with mom_vecinv,
1181       and also the case for grad.PhiHyd when staggered-timeStep)
1182      This will allow to put dissipation out-off the AB time-stepping.
1183     Unfortunately, affects truncation error. Update output of exp. that "fails"
1184      (cg2d matching number) and leave the others for later: front_relax(10),
1185      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1186      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1187    
1188    checkpoint57o_post
1189    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1190      (2) its ready to be documented during the 20050801 DocFest
1191    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1192      for ideal_2D_oce and lab_sea on linux_ia32_g77
1193    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1194      in global1x1_tot/code_seaice_adj to access indices 32, 33
1195      (worth another tag)
1196    
1197    checkpoint57n_post
1198    o adding precip control xx_precip 32
1199    o adding swflux control xx_swflux 33
1200    o Replacing 10 forcing penalty cost routines by 1 generic.
1201    o Implementing partitioning in time-mean and variable adjustment
1202      for atmos. state.
1203    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1204    o in natl_box_adjoint:
1205      * updated exp 1 to 10
1206        (but does not have time-mean vs. variable split results yet)
1207    o updated global1x1/*_seaice_adj/
1208      to incorporate latest changes
1209    o enable useSingleCpuIO for mdsio vector routines
1210      (applies in particular to tapelev I/O)
1211    o removed inefficient K-loop in all active_file*control*.F
1212    
1213    checkpoint57m_post
1214    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1215      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1216    o pkg/exch2: filling of face-corner halo regions is optional
1217      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1218    
1219    checkpoint57l_post
1220     tag before updating tutorials (pre-release-2)
1221    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1222       for output and interpolation of input fields onto model grid)
1223    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1224       Affects results of exp. rotating_tank ; update output.txt.
1225    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1226          and taking the square quantity and/or using a fraction-weight field.
1227    o fix aim_diagnostics_init.F mate numbers.
1228    o add mnc output capability to diagnostics/diagstat and update
1229      our cvsignore files for the ACSII output generated
1230    
1231    checkpoint57k_post
1232    o lab_sea now uses diagnostics package and provides a suite of
1233      new EXF diagnostics output.
1234    
1235    checkpoint57j_post
1236    o exf
1237      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1238        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1239        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1240      * extended diagnostics output
1241        - now includes all EXF variables
1242        - hs, hl moved to common block
1243        - separate S/R for diagnostics, called after ctrl vector is added
1244        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1245        - EXFqnet contains true Qnet (i.e. includes qsw)
1246      * updated verif. lab_sea, global_with_exf
1247      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1248        to ensure that diagnostics sees a true EXFqnet
1249    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1250    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1251      several times with different frequencies.
1252    o mnc-ify the thsice package as requested by Daniel Enderton
1253      - the monitor--MNC output needs work
1254      - many attributes need to be added (most are currently blank)
1255    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1256      - many attributes need to be added (most are currently blank)
1257    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1258    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1259    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1260      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1261         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1262    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1263     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1264    
1265    checkpoint57i_post
1266    o Diagnostics package was changed: diagnostic allocation is now deactivated
1267      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1268    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1269      add 1rst Order upwind vertical Shear.
1270    o add a quick fix for A/B checkpointing in OFFLINE mode
1271    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1272      end-run around the C/Fortran linking horror in eesup/src/timers.F
1273    o added pkg/runclock: allows user to terminate run based on wall clock
1274    o added non-hydrostatic scaling parameter: nh_am2
1275    o pkg/my82: futile attempt to make results compiler-independent by adding
1276      some "_d 0", etc. no effect.
1277    o for mnc output, fill the 'T' coordinate var with myTime and create a
1278      separate 'iter' variable for iteration count
1279    o pkg/diagnostics:
1280      add new capability: output of Global/Regional & per-level statistics ;
1281      tested against monitor output (including land & thSIce) on various exp.
1282    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1283    
1284    checkpoint57h_done
1285      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1286      data.diagnostics, data.gchem, data.ptracers) is done.
1287    
1288    o pkg/diagnostics: prepare for Global/Regional statistics.
1289      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1290    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1291      and rename it: DIFFERENT_MULTIPLE
1292    
1293    checkpoint57h_post
1294    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1295    o pkg/diagnostics: change output frequency, now in seconds (instead
1296      of Nb of iterations). This requires to change data.diagnostics.
1297    checkpoint57h_pre
1298    
1299    o in mnc, let the user create the output dir if both mnc_outdir_date
1300      and mnc_outdir_num are false
1301    o add fflags() to pkg/diagnostics which allows one to specify, on a
1302      per-file basis, the file precision [default behavior is unchanged]
1303    o added diagnostics to pkg/kpp, including computation of mixed layer
1304      depth based on a temperature/density criterion
1305    o updated verification/natl_box to test the new pkg/kpp diagnostics
1306    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1307    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1308    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1309      not mnc -- this mistake was found by JMC and is now corrected
1310    
1311    checkpoint57g_post
1312    o add Adams-Bashforth 3rd Order time stepping:
1313      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1314      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1315    checkpoint57g_pre
1316    
1317    o make lambda[Theta,Salt]ClimRelax spatially varying
1318      (default remains spatially uniform constant based on tau)
1319    o added new control variables
1320      * init. uVel, vVel, etanN
1321      * lambda[Theta,Salt]ClimRelax
1322    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1323      (suggested by G. Forget)
1324    
1325    checkpoint57f_post
1326    o add parameter "baseTime" = model base time = time at iteration zero
1327      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1328      account for baseTime shift
1329    o move Coriolis arrays from PARAMS.h to GRID.h
1330    checkpoint57f_pre
1331    
1332    o mnc-ifying the seaice package
1333    o introduced an alternative length scale calculation for use in the limiting
1334      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1335    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1336    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1337      as well as grad(vort3).  Made it compatible with both approximate form
1338      for the cubed sphere and full form of these gradients.  Added flag
1339      useFullLeith to select between approximate and full form.  
1340    o add "d0" in getcon.F to reduce differences between compilers/platforms
1341      update output.txt of exp. fizhi-gridalt-hs
1342    o change port_rand funtion to allow to set the seed.
1343    o fix obscure MNC bug involving conversion between reals and integers
1344      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1345        new version is now more standards-compliant
1346    o adjoint-related modifications
1347      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1348      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1349      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1350    
1351    checkpoint57e_post
1352    o Adding eddy stress controls a la Ferreira et al.
1353    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1354    
1355    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1356      update output.txt of exp. fizhi-gridalt-hs
1357    o add more "Z" dimensions and associated coordinate vars to MNC
1358    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1359    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1360      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1361      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1362      months and years.  Requires pkg/cal.
1363    o diagnostics: add pickup functionality
1364      - off by default for backwards compatibility
1365      - current version only uses MDSIO -- MNC will be added
1366    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1367    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1368    
1369    checkpoint57d_post
1370    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1371    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1372      output from the diagnostics package
1373    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1374    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1375      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1376    o add coordinate variables to the MNC output from the diagnostics package
1377    o change MNC-flags default value: true when useMNC=TRUE
1378    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1379      the ability (off by default) to read the grid information using MNC
1380    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1381    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1382    o do snap-shot diagnostics at the middle of the time-interval (instead of
1383      at the end).
1384    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1385      new test for AIM with thSIce + slab-ocean
1386    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1387    o move state variable diagnostics to the beginning of the time step ;
1388      (note: still needs some work specially for snap-shot diagnostics)
1389      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1390    
1391    checkpoint57c_post
1392    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1393    o generate new output.txt files on faulks with g77 & the new -ieee option
1394    checkpoint57c_pre
1395    
1396    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1397      update output.txt of exp. global_ocean.90x40x15
1398    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1399      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1400    o add saltFlux(+File) forcing capability with periodicExternalForcing
1401    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1402    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1403    o improvements for the MNC output from DIAGNOSTICS:
1404      - correct handling of the unlimitied dimension
1405      - all dims now have associated coordinate variables
1406      - variables located at U, V, and Corner ("Z") points are now written
1407        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1408        *all* data points are output
1409    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1410    o added pkg/seaice/seaice_monitor.F
1411    o mdsio_readfield.F can now read files visible only to master MPI process.
1412    o pkg/seaice: some test code for ice-modified ocean stress
1413    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1414      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1415      spurious negative numbers for precipitation and humidity.  Will cause
1416      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1417    o pkg/ctrl/
1418      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1419        May be enabled via doPackDiag
1420      *  introduce z-scaling of
1421         + gradient (doZscalePack) and
1422         + control (doZscaleUnpack)
1423    o pkg/mdsio/
1424      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1425      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1426    
1427    checkpoint57b_post
1428    o simplify options in diagnostics_fill arguments (remove weird combinations)
1429    o fix MNC coordinate variables so that they now contain per-face index
1430      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1431      general, EXCH2 grids are only aligned to a "local" coordinate system
1432    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1433    o Implement instantaneous output within pkg diagnostics:
1434      setting a negative frequency in data.diagnostics produces
1435     "snap-shot" output (as opposed to time-average if freq > 0)
1436    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1437      NOTE: change ptracer diagnostics name: use 2 characters to work with
1438            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1439    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1440      becomes the coordinate variable for the 'T' dimension
1441    o add CF-style coordinate variables to MNC
1442      - just a first cut:  numbers are meaningless on the cubesphere and
1443        missing along the T axis but otherwise it works!
1444    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1445    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1446    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1447      this is based directly on what the model compute, so that the content of
1448      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1449    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1450    o clean up build options files for SunOS, in particular
1451      - remove -traditional from xmakedepend
1452      - change -xarch=v9 to -xarch=native for f77
1453      - restore use of make (not gmake)
1454      - add CC=gcc if using g77
1455    o changes per discussion of AM, JMC, & EH3 today:
1456      - move redundant "grid" variables out of "state" -- in preparation of
1457        creating proper CF-style coordinate variables and in recognition
1458        that any/all grid variables can be easily copied (eg. w/NCO) from
1459        the grid files into any of the other NetCDF files
1460      - *always* output grid variables with MDSIO (this will eventually be
1461        changed)
1462      - output MNC grid file if useMNC is true
1463    o every instance of _END_MASTER() has been found and replaced with
1464      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1465      preprocessors
1466    o re-arrange diagnostics pkg initialisation:
1467     - allow each package to extend the available diagnostics list
1468     - add some checking and fix small problems (multi-threaded, ...)
1469     - new S/R diagnostics_fill (replace fill_diagnostics):
1470       look through the short list of active diag. (instead of the long list)
1471       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1472    
1473    checkpoint57a_post
1474    o this set of changes restores TAMC compatibility
1475      tested for global_ocean.90x40x15 adjoint on trough
1476      (what a pain)
1477    
1478    checkpoint57a_pre
1479    o some modifs in tools/build_options for sunos
1480    o call ctrl_pack for ctrl at end for optimcycle=0
1481    
1482    checkpoint57
1483    o add horizontal bi-harmonic viscosity for vertical velocity
1484      - new parameter viscA4W (defaults to viscA4)
1485      - affects only non-hydrostatic code
1486      - to be done: no-slip lateral boundary conditions
1487    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1488    o implement Implicit Vertical advection for pTracers
1489    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1490      (implemented also for implicit vertical diffusion & advection)
1491    o OBCS: extend application of tracer open boundary conditions
1492      to a strip beyond the boundary of width Olx/Oly
1493    o add call monitor to TAF set of required calls (flow directives)
1494      and include in natl_box_adjoint
1495    o untangle a few ifdefs related to cost, ctrl, autodiff
1496      untangel a few ALLOW_ECCO_OPTIMIZATION
1497    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1498      (theta2, salt2 in ecco_cost_weights)
1499    
1500    checkpoint56c_post
1501    o OBCS as control variables
1502      - update ctrl_ad_diff.list, obcs_ad_diff.list
1503      - remove balance of obcs controls from default
1504      - fix index bug nobcs in ctrl_init
1505      - fix dummy fields filen in ctrl_pack
1506      - add dummy weights for obcs
1507    o lsopt: comment out fort.94 output
1508    o optim:
1509      - remove unnecessary header files
1510      - adjusted namelists
1511      - add xerbla.F to Makefile
1512    o exf:
1513      - multiple modifications of exf_check_range
1514      - unit change in exf_init_runoff from [m/year] to [m/s]
1515    o mdsio:
1516      - i/o-vector change debugLevel from debLevA to debLevB
1517    
1518    checkpoint56b_post
1519    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1520      is called from DO_THE_MODEL_IO
1521      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1522      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1523      - clean up PTRACERS_WRITE_TIMEAVE a little
1524    o add another verification experiment that tests both the cfc-pkg and
1525      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1526      reactive tendencies treated inline with regular timestepping
1527    o testreport previously did a lousy job of comparing small numbers, so
1528      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1529      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1530      testreport.
1531    o ptracers_monitor: bug fix for MPI
1532    
1533    checkpoint56a_post
1534    o GCHEM: finish reorganizating the package
1535      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1536        (introduces another 3D-array for each passive tracer, but only if
1537        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1538        gchemTendency is not needed because the timestep is done separately)
1539      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1540      - GCHEM is now---more or less cleanly---separate from PTRACERS
1541      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1542        so clear to me how that should be done in a general way.
1543    o CFC: improve formatting of output in CFC_ATMOS
1544    o PTRACERS:
1545      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1546        that ALL experiments with ptracers enable can be checked. This makes
1547        GCHEM_MONITOR obsolete.
1548      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1549        monitorFreq
1550      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1551    o add PTRACERS (PTR0[1-5]) to testreport output
1552    o exf_check_range:
1553      * default changed to .TRUE.
1554      * will check values for niter0 if debLevA, every timestep if debLevB
1555      * STOP in exf_check_range if 'out of range'
1556      * range chosen generous to allow for potential extema
1557      TBD: a version with stricter range
1558           permitted range would be runtime parameters
1559    o GMredi:
1560      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1561      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1562      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1563    o GCHEM:
1564      - move call to GCHEM_FORCING_SEP, so that it is now called before
1565        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1566      - introduced a useGCHEM runtime flag and applied it everywhere.
1567      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1568        this flag is now only visible within GCHEM-pkg routines.
1569      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1570        be replaced by a 3D array that is computed before thermodynamics; for
1571        this, the tracer ID iTracer had to be included into the parameter list
1572        of ptracers_forcing
1573      - set up forward_step to call gchem_forcing, that will replace
1574        gchem_forcing_int in ptracers_forcing
1575      - cleaning up
1576    o small cleaning of exch2: remove files that are also in eesupp/src
1577    
1578    checkpoint56
1579    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1580    o mnc: cleanup "full" files--fixes out-of-memory problem
1581    o ECCO-GODAE
1582      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1583      * fully merged and updated from SIO code
1584        windstress sign change affects
1585        - exf_inscal_[u/v]stress
1586        - sign of xx_tau[u/v] adjustments
1587        - signs in cost_scat
1588      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1589      * natl_box_adjoint updated and compressed
1590      * 2-level checkpoint switch added
1591        (tested in EXP. 1 of natl_box_adjoint)
1592      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1593    o SVD
1594      * first complete, non-hacked version for SVD calculations
1595      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1596        performed via direct access files admtlm_vector.it????
1597        (via ctrl_[un]pack)
1598      * optimcycle is used for ARPACK iteration counter
1599        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1600      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1601        and add linear transforms where necessary
1602      * controls are initial/final SST, SSS (can be extended; need to check
1603        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1604    o mdsio: filename info to both stderr, stdout
1605    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1606      from sign change
1607    
1608    checkpoint55j_post
1609    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1610      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1611    o add consistent build directories and .cvsignore files to verification
1612    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1613    o make all subroutines 30 or less characters in length for certain older
1614      compilers to work (a thorough search only turns up two routines in
1615      pkg/ptracers)
1616    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1617      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1618    
1619    checkpoint55i_post
1620    o change arrays for total vertical diffusivity (2.D if explicit,
1621      3.D if implicit) ; each ptracer uses its own background value.
1622    o added mnc/NetCDF output capability to ocn_compon_interf
1623      - added bits to verification/cpl_aim+ocn so that it can run on
1624        ITRDA and other clusters without the mpirun "-wd" option
1625    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1626      configuration
1627    o give MNC the ability to create additional files rather than
1628      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1629      - the default is just less than 2GB which is a practical limit
1630        on many systems
1631    o Compute the non-local term using either KPP vertical diffusivity (=default)
1632       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1633    
1634    checkpoint55h_post
1635    o add verification test "vermix"
1636    o remove all the *_ioinc flags and replace with the single global
1637      outputTypesInclusive flag
1638    o allow to set a vertical profile of vertical diffusivity for T & S
1639    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1640    o useMNC moved from data.mnc to data.pkg
1641    
1642    checkpoint55g_post
1643    o Renaming carbon AD experiments to comply with testreport conventions
1644    o Updating adjoint of Held-Suarez hs94.1x64x5
1645    o Fixing directives for non-ECCO forward_step, after ECCO directives
1646      have been fixed to avoid recomp. of do_oceanic_phys
1647      Works well for global_ocean.90x40x15,
1648      but recomp. issue remains for carbon
1649    o Updating adjoint output for natl_box_adjoint after
1650      pkg/ecco has been modified (see taga c55d_post)
1651    
1652    checkpoint55f_post
1653    o rename to timeave_init_fixed
1654    
1655    checkpoint55e_post
1656    o some delicate re-shuffle of store directives to avoid one
1657      extra call of do_oceanic_physics
1658      affects ecco_the_main_loop.F, do_oceanic_physics.F
1659      checkpoint_lev1_directives.h
1660    o NB: this may break global_ocean adjoint temporarily,
1661      but it is clear how to fix it. Will do later, need this now.
1662    
1663    checkpoint55d_post
1664    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1665    o ecco_cost_weights is modified to 1x1 runs
1666    o modifs to allow observations to be read in as
1667      single file or yearly files
1668    o enable to read exf forcing fields as either
1669      single file or yearly files (flag useExfYearlyFields)
1670    checkpoint55d_pre
1671    
1672    o switch between 2-level and 3-level checkpointing
1673    o add ability of MNC to write local and "partial" (eg. 2D slices where
1674      the full 3D field is never actually stored) arrays to NetCDF files
1675      with the correct (that is, the complete multi-dimensional) set of
1676      array indicies
1677      - used in mom_vecinv() to write the diagFreq output
1678      - tested (demonstrated) in verification/aim.5l_cs
1679    o further mnc-ification
1680      - add verification/lab_sea to the list with mnc setups
1681      - fix undefined mnc v-names in cd_code
1682      - add kpp to mnc output (both snapshot and timeave)
1683    o non-hydrostatic code
1684      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1685        in calc_gw.F
1686      - defaults to viscAh
1687      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1688        friction or Leith) in non-hydrostatic mode, as long as there is
1689        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1690    o pkg/cost
1691      extend simple cost functions to treat time mean quantities
1692      (T,U,V) via cost_accumulate_state from cost_tile
1693    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1694        be 2 times larger than the minimum size the advection scheme requires.
1695        now get a perfect conservation of salt in advect_cs test-exp (updated)
1696    o GGL90 (Gaspar's TKE mixed layer)
1697      - add horizontal diffusion of TKE, requires exchanges in
1698        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1699        default. In OPA there is no horizontal diffusion of TKE but the
1700        mixing coefficients are computed from a horizontal average of TKE of
1701        6 points or so. I think that diffusion has a little more physical
1702        justification.
1703      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1704        was in vain)
1705      - mask tke-variable in ggl90_init
1706    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1707    o fix biharmonic diffusion on CS-grid.
1708    o more obcs stuff
1709      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1710        for reading boundary values. This routine is called from
1711        obcs_prescribe_read
1712      - updated obcs_check
1713      - changed sponge layer relaxation parameter units for days to seconds
1714      - turned off sponge layer by default
1715      - changed argument list of OBCS_CALC to myTime+deltaTclock
1716      - fixed about 35 bugs in obcs_external_fields_load
1717    
1718    checkpoint55c_post
1719    o obcs stuff
1720      - new runtime flags useOBCSprescribe, useOBCSbalance
1721      - re-arranged obcs_calc
1722      - moved exf_getobcs to obcs_prescibe_read
1723        obcs_prescibe_read is called after ORLANSKI stuff
1724        and independent of it (executable can contain all).
1725      - updated obcs_check
1726      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1727        These may be necessary only if tangential velocities are
1728        prescribed at OB, not sure, needs testing.
1729    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1730      which simplifies the calls and passes the ifc check-bounds test
1731    
1732    checkpoint55b_post
1733    o add a 2D scalar, Z location, exchange_2 routine.
1734    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1735      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1736      affects advect_cs results (for the wrong reason): update output.txt
1737    o use a more standard discretization for biharmonic viscosity ;
1738     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1739      affects results of dome set-up: update output.txt
1740    o fix gad_advection.F (CubedSphere part), back to version 1.23
1741    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1742    
1743    checkpoint55a_post
1744    o merged code to
1745      * prescribe/read time-dependent open boundaries
1746        (works in conjunction with exf, cal)
1747      * sponge layer code for open boundaries
1748      * each boundary N/S/E/W now has its own CPP option
1749        (healthy for the adjoint)
1750    
1751    checkpoint55
1752    o up-to-date adjoint of previous breaks
1753      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1754      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1755      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1756      - carbon: * remove tr1-related adjoint verification
1757                * add ptracer as control variable
1758    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1759      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1760    
1761    checkpoint54f_post
1762    o in verification/carbin/ remove experiment related to
1763      ALLOW_PASSIVE_TRACER (array tr1 etc)
1764      code_ad/ input_ad/ results_ad
1765    
1766    o add two new packages
1767      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1768        + subject to optimization (memory)
1769      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1770        + subject to reordering (many GOTOs in the original code)
1771        + so far opps is called for every (i,j) point, and then operates in
1772          the vertical; one may want to reorder the scheme in order operate in
1773          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1774          fields)
1775    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1776      - all verification tests compile and run with linux_ia32_g77
1777      - defaults are compatible with current input files--nothing
1778        should change if you were not previously using MNC
1779      - MNC output has been added in numerous places (eg. timeave)
1780        but there are still a few writes not yet do-able with MNC
1781        (this is in progress)
1782      - flags now allow for either/or/both use of MDSIO and MNC and
1783        documentation will soon follow
1784      - numerous small formatting cleanups for ProTeX
1785    o add version info (via BUILD_INFO.h) to MNC and stdout
1786    
1787    checkpoint54e_post
1788    o add two new packages
1789      - pp81 (Packanowski and Philander, 1981), Richardson number and
1790        stratification dependent mixing
1791      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1792      - these scheme operate in a similar manner as KPP (without ghat, of
1793        course), however there is only one diffusivity that is used for both
1794        temperature and salinity (and passive tracers)ç
1795    o add offline package
1796    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1797      provided by Stephanie Dutkiewicz
1798    o genmake2: add ability to search for C compilers and cleanup test output
1799      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1800    
1801    checkpoint54d_post
1802    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1803    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1804      leading to additional shift by 5 days each year of integration
1805       (i.e. leading to considerable offset over the years)
1806    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1807    o start with no AB and no initial filtering (staggerTimeStep):
1808      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1809    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1810      (external loading & cpl import/export stay in forward_step.F)
1811    o update coupling interface to work with new staggerTimeStep
1812    o change MDSIO ptracers_pickup.
1813    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1814    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1815    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1816    
1817    checkpoint54c_post
1818    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1819      this affects (truncation error) output.txt of test-exp:
1820       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1821    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1822    o change Qnet to always be the net heat flux, (+upward).
1823      affects (truncation error) output of natl_box exp.: updated
1824    o define the max number of passive tracers in PTRACERS_SIZE.h
1825    o start to test mnc routinely in exp0
1826    o add sea-ice loading (sIceLoad) as a new forcing field.
1827    
1828    checkpoint54b_post
1829    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1830       impressive on Altix and Opteron systems)
1831    o diagnostics can now write NetCDF files through the mnc package
1832    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1833    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1834    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1835      affects (truncation error) output of lab_sea & natl_box exp.: updated
1836    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1837    
1838    checkpoint54a_post
1839    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1840    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1841    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1842    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1843      + internal_wave (shift in writing cg2d_ini_res)
1844    checkpoint54a_pre
1845    
1846    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1847      - modified verification/lab_sea and natl_box_adjoint accordingly
1848    
1849    checkpoint54
1850    checkpoint53g_post
1851    o prepare splitting of thermodynamics: store convect.counter in common block
1852    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1853      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1854    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1855    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1856    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1857    o restore adjointability
1858    
1859    checkpoint53f_post
1860    o modifications that affect AIM experiment results (update output.txt):
1861      - no advection of S at top interface Nr (pkg/generic_advdiff)
1862      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1863    o AIM pkg:
1864      - include stability function into surf.Flux derivative relative to Tsurf
1865      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1866    
1867    checkpoint53e_post
1868    o merged cylindrical coord configuration
1869    o added rotating_tank experiment
1870    checkpoint53e_pre
1871    
1872    checkpoint53d_post
1873    o faulks upgraded: re-generate output.txt that have changed:
1874       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1875    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1876    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1877    o added Sadourny discretization of Coriolis
1878      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1879      - re-enabled use of omega3 (useAbsVorticity)
1880    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1881      vector-invariant equations
1882      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1883    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1884      hopefully without new bugs
1885      - still to do: biharmonic friction for non-hydrostatic w
1886    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1887    o regenerated output for global_ocean_ebm (using -ieee)
1888    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1889      of mom_common/
1890      - simple re-arrangement of instructions within computing loop
1891    checkpoint53d_pre
1892    
1893    checkpoint53c_post
1894    o new version of coupler for AIM+thSIce and Ocean models
1895     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1896     - land: change Evaporation of snow
1897     - aim with thSIce: fix bug in snow-precip.
1898    o changes to calc_gw.F
1899     - bug fix for w^2 term near the bottom boundary
1900     - (hopefully) improve the lateral slip boundary condtions for use with
1901        partial/looped cells
1902      - because the bug fix changes two verification experiments anyway (exp5
1903        and plume on slope), change the lateral boundary condition from half slip
1904        to the value of no_slip_sides
1905    o ebm package wasnt quite up to the parallel task. Fixed that.
1906    o Adjoint of EBM package + verification
1907      * TLM OK
1908      * ADM not sufficient accuracy yet (needs further testing)
1909    
1910    checkpoint53b_post
1911    o Commiting new energy balance model to repository
1912      * package is pkg/ebm
1913      * verif. is verification/global_ocean_ebm
1914      * references are in ebm_driver.F
1915    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1916    C        Global thermohaline circulation. Part I:
1917    C        Sensitivity to atmospheric moisture transport.
1918    C        J. Climate 12(1), 71-82
1919    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1920    C        Global thermohaline circulation. Part II:
1921    C        Sensitivity with interactive transport.
1922    C        J. Climate 12(1), 83-91
1923    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1924    C        Destabilization of the thermohaline circulation
1925    C        by atmospheric eddy transports.
1926    C        J. Climate 7(12), 1870-1882
1927    o Will need long integration testing.
1928    checkpoint53b_pre
1929    
1930    o created pkg/mom_common in preparation for variable viscosity code
1931    o renamed and split ini_mnc_io
1932    o pkg/land: only liquid water can diffuse or run-off
1933    o AIM using land: soil wetness availability account for snow
1934    o added printMapIncludesZeros to EEPARMS namelist
1935    
1936    checkpoint53a_post
1937    o restore TAMC compatiility for exf_constants.h
1938      (no usage of _d in .h)
1939    o Additional storing in KPP in an attempt to fix
1940      TAMC problem with adjoint of KPP code.
1941      (no success...)
1942      Identical code works fine with TAF.
1943    o Fixed verification/natl_box_adjoint experiments.
1944      Initial conditions for Experiments 4 and 5 are now
1945      set to "SEAICE_initialHEFF=0", which is more reasonable,
1946      and hence gives results closer to that of Experiment 2.
1947      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1948    
1949    checkpoint53
1950    o stable checkpoint with up to date adjoint
1951      TLM tests only run for 1st grdchk at the moment. Its unclear if
1952      this is a code problem or a problem with resetting code for g_
1953      variables that is being autogenerated wrong.
1954      Otherwise:
1955       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1956       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1957         are both still in chaos following their security messes.
1958    
1959    checkpoint52n_post
1960    o various build (mostly genmake2) changes including:
1961      - ability to build/run more easily within Cygwin and MacOS X
1962      - more complicated Makefiles with a stronger dependence on Gnu Make
1963    o pkg/seaice modifications
1964      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1965        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1966        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1967      - changed proxy for geostrophic velocity and updated
1968        verification/lab_sea/results/* accordingly
1969      - removed ADI dynamic solver from pkg/seaice
1970      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1971        they caused a segmentation fault under certain circumstances
1972      - removed unused field WATR
1973    o bug fix in exf-package:
1974      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1975         now reflect that.
1976    o small fixes in the cal-package:
1977      - set reference date to first of January for the 'model'-calendar
1978      - failing of cal_CheckDate in cal_FullDate now actually results in a
1979        warning
1980    o small modifications in exf-package to increase flexibility:
1981      - change climtempfreeze from a constant to a runtime parameter that
1982        is specified in data.exf_clim (default = -1.9)
1983      - introduce runtime parameter windstressmax (default = 2.0) that is
1984        specified in data.exf
1985    o fix in pkg/thsice:
1986      - update Evap (Tsf changes) to be consistent with Latent heat flux
1987      - maintain snow precipitation unchanged (even if Tsf >=0).
1988     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1989    
1990    checkpoint52m_post
1991    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1992      this does not change any of the results, because myIter=0 in swfrac always
1993      lead to jwtype=2 (the default anyway), but the call makes little sense
1994      as a default
1995    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1996    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1997      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1998    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1999    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2000    o extending useSingleCpuIO option to work with new exch2 I/O format
2001      - old-style, missing-tile I/O is still accessible by defining CPP
2002        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2003    o monitor package can write to NetCDF files and/or STDOUT
2004    o fix re-definition bug in MNC_GRID_INIT_ALL()
2005    o doc/api_reference added
2006      - a framework for building an API Reference Manual using all
2007        the "protex" comments embedded in the code
2008      - see pkg/generic_advdiff, pkg/mnc for examples
2009    o MNC:
2010      - make myThid the last argument for all subroutines
2011      - new default for the grid files: NO halos
2012      - add useMNC and other run-time flags
2013      - separate per-file-group handling of the unlimited dimension
2014      - early initialization of MNC w/ flags read at the eeboot stage
2015        and lookup tables set in initialize_fixed
2016      - write all MNC output to a freshly-created directory
2017    o thermodynamics sea-ice (thsice) is now tested with testreport.
2018    o test exp. advect_cs: use the standard cs32 grid ; update output.
2019    o Added functionality to grdchk:
2020      pick global i,j,k position (or nearest wet) where to perform check.
2021    
2022    checkpoint52l_post
2023    o new land formulation:
2024      a) use ground enthalpy as prognostic variable to ensure exact
2025         energy conservation.
2026      b) account for water temperature and for latent heat of freezing
2027         in all processes (rain, run-off, ground storage)
2028      c) compute surface and ground temperature implicitly.
2029    o aim_v23 modification for new land model:
2030      a) Treat separately land / ocean / sea-ice surface fluxes
2031         to allow implicit computation of land & sea-ice surface temp.
2032      b) add snow precipitation.
2033    checkpoint52l_pre
2034    
2035    o fix problem (when 1 tile is empty) in min/max monitor.
2036    o fix bug in timeAve (u,vZetatave in common block)
2037    o no restoring terms under ice for pkg/seaice
2038    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2039    o bug fix for pkg/seaice pickups
2040    o change MNC call locations and add coordinate attributes
2041    o mask vorticity at the corner ; affects global_ocean.cs output
2042    o fix ini_curvilinear_grid ; test CS experiments with mpi
2043    o aim.5l_cs: modify sea-ice fraction input file ; update output
2044    o exf: Adding simple range check routine for exf fields after read
2045    
2046    checkpoint52k_post
2047    o removed top-level directory "diags"
2048      - we migrated these functions to pkg/timeave a long time ago
2049    o fixed bug introduced in pkg/monitor
2050    o accuracy ctrlprec = 32 insuffient for gradient checks using
2051      averaged fields (I/O via cost_averages)
2052      -> use ctrl.h in active_file*.F to control I/O precision.
2053    o paramter list of CALL ADTHE_MAIN_LOOP
2054    o added initial do_the_model_io to ecco
2055    o set all ...Freq to zero after cost_final
2056      taveFreq, dumpFreq, pChkptFreq
2057    o MAIN and ECCO differentiability restored
2058    
2059    checkpoint52j_post
2060    o fix nchklev in tamc.h for global_ocean...
2061    o Bringing flow and store directives up-to-date
2062    o Really weird thing!
2063      call do_the_model_io from the_main_loop with parameters
2064      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2065      TAF places a faulty re-call of initialise_varia
2066      after cost_final call which should not be there!
2067    checkpoint52j_pre
2068    
2069    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2070      error messages
2071    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2072    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2073      debug output
2074    o modfied mdsio_writefield.F to handle non-global files under exch2
2075    o update AIM Cubed-Sphere exp (aim.5l_cs):
2076      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2077    o update AIM Equatorial Channel exp:
2078      use standard aim_v23 pkg and change the SST fields to be more realistic.
2079    o globalFile now works with exch2
2080    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2081      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2082    o limit timeave output for hi-res integrations
2083    
2084    checkpoint52i_post
2085    o removed CPP_EEOPTIONS.h from verification/*/code
2086    o updated the tiling for global_ocean_pressure
2087    checkpoint52i_pre
2088    
2089    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2090      the old pkg/aim).
2091    
2092    checkpoint52h_pre
2093    o shortened offending lines in exch2_send_rx?.template
2094    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2095    o genmake2: add build & execute test for NetCDF code
2096    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2097      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2098    o added useSingleCPUIO flag to monitor.F and mon_out.F
2099    o added temporary hack for sea-ice dynamics on the cube:
2100      metric terms are ignored and it is assumed that
2101      there is no sea-ice on cube faces 1, 2, 4, and 5.
2102    
2103    checkpoint52f_post
2104    o added exch2 cube routines to pkg/exch2
2105    o modified hs94.cs-32x32x5 to use it
2106    o added new grid files to hs94.cs-32x32x5
2107    checkpoint52f_pre
2108    
2109    checkpoint52e_post
2110    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2111      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2112    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2113      to work with implicit vertical advection and AB ;
2114    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2115    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2116     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2117    checkpoint52e_pre
2118    
2119    o fix bug in impldiff when Nr=1 or Nr=2.
2120    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2121    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2122    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2123      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2124    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2125    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2126    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2127    
2128    checkpoint52d_post
2129    o re-tiled many expts to allow comparison in multi-processor mode
2130      - updated output accordingly
2131      - changed hs94.128x64x5 to use intial T from file rather than use the
2132        random number generator
2133    o add infrastructure in model routines for fizhi and gridalt packages
2134    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2135    o changes to permit hi-res, cubed-sphere, configuration
2136      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2137      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2138      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2139        of surface winds for the cube
2140      (A verification experiment, based on global_ocean.cs32x15, but with
2141       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2142       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2143       complete with example surface forcing files and matlab scripts to look
2144       at the output and compare it with that of global_ocean.cs32x15.)
2145    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2146       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2147       to conform to the common rule.
2148    o check-in the first version of the coupler + interfaces for multi-components
2149       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2150       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2151       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2152       - ocean and atmos. share the same horizontal grid (no interpolation).
2153       - exchanges between component and coupler is done in forward_step
2154    o new verification experiment, cpl_aim+ocn:
2155       coupled ocean - AIM atmosphere on cs32 grid.
2156    
2157    checkpoint52d_pre
2158    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2159    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2160    
2161    checkpoint52c_post
2162    o Fixing OPTIONS files for use of exf:
2163      - ALLOW_ECCO not needed
2164      - ECCO_CPPOPTIONS.h should not be included from
2165        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2166        as has been the case in the past
2167      - All cal/exf related options are currently set in
2168        single header file. Should remain so until we
2169        agree on a consistent new policy.
2170    o Removed all CPP options for cal package.
2171      cal has no more CPP options.
2172    o modified STOREs in GAD_ADVECTION
2173    o corrected key comp. for passkey
2174    
2175    checkpoint52b_post
2176    o new version: "thsice" of thermodynamic sea-ice pkg:
2177     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2178     - modify fluxes but do not change theta directly;
2179     - light cleaning of bulk_force pkg (still needed with thsice).
2180     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2181       + output_thsice.txt to test thsice & bulk_force pkgs.
2182    o put back grid & coriolis monitor output.
2183    checkpoint52b_pre
2184    
2185    o call "do_the_model_io" at the beginning (=> dump initial state)
2186    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2187    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2188      (need info on NUMBER_OF_PTRACERS)
2189    o missing PTRACERS headers in some routines
2190    o default tamc.h in pkg/autodiff supposed to crash
2191      to ensure proper customization
2192    
2193    checkpoint52a_post
2194    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2195      - moved surfaceTendencyTice from pkg/seaice to main code
2196      - subroutine FREEZE_SURFACE now limits only surface temperature
2197        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2198        => new output.txt for global_ocean.cs32x15 & global_with_exf
2199      - keep the old version of FREEZE for backward compatibility;
2200        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2201      - corresponding modifs for TAF directives
2202    o added surface flux output variables to TIMEAVE_STATVARS
2203    o time-averaged output for pkg/ptracers
2204    o fix problem with ECCO-related divided adjoint
2205      snapshot file was missing some ad-variables,
2206      but no warning issued by TAF
2207    
2208    checkpoint52a_pre
2209    o some bug fixes for #undef REAL4_IS_SLOW
2210    
2211    checkpoint52 = ecco_c52_e35
2212    o after testing adjoints of checkpoint51u_post
2213    
2214    checkpoint51u_post
2215    o this is the post-merge tag of the ecco-branch
2216      (needs another clean checkout and re-testing)
2217    o various natl_box_adjoint configs and results
2218      but no input fields
2219    o obcs adjoint not yet merged!
2220    o adding ECCO global 1x1 and 2x2 degree configs
2221    o updated/extended some store directives for seaice
2222    o pkg/ecco now containes ecco-specific part of cost function
2223    o top level routines the_main_loop, forward_step
2224      supersede those in model/src/
2225      previous input data.cost now in data.ecco
2226      (new namelist ecco_cost_nml)
2227    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2228    
2229    checkpoint51t_post
2230    o this is the pre-merge tag of the ecco-branch
2231    
2232    checkpoint51s_post
2233    o cleanup: removed various obsolete #define-s
2234    o pkg/grdchk
2235      - renamed 'ph-grd 3' to 'grad-res'
2236      - merged from ecco-branch
2237        (remaining bug fixes for obcs gradient checks)
2238      - additional high-precision output for testreport
2239        (grep for 'precision_grdchk_result')
2240    
2241    checkpoint51r_post
2242    o cleaned up or removed CPP_OPTIONS.h files
2243    o updated results for some of the tests to reflect the new
2244      optfiles (-ieee: -O0 instead of -O3)
2245    
2246    checkpoint51q_post
2247    o cd_code:
2248      - moved cd_scheme.F -> cd_code_scheme.F
2249      - separate read_checkpoint from cd_code_ini_vars.F
2250      - separated cd_code part from write_checkpoint
2251      - updated AD_SOURCE, generated .flow
2252      - added CD_CODE_VARS.h to the_main_loop
2253      - Moving cd_code specific store dir.s to pkg/cd_code
2254    o ctrl package totally restructured
2255      - pack/unpack now optional and decoupled from
2256        xx_/adxx_ I/O
2257      - ctrl_pack/unpack cleaned
2258        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2259      - confined inclusion of AD_CONFIG.h to where necessary.
2260    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2261    
2262    checkpoint51p_post
2263    o create initial cd_code package
2264      - WARNING: the initialization of fields within packages
2265        is broken because INI_FIELDS (where READ_CHECKPOINT is
2266        called) is called *before* PACKAGES_INIT_VARIABLES.
2267        This seems to be backwards since
2268        1) its important to initially zero the entire field including
2269           the "halo" region
2270        2) zeroing needs to be done *before* reading pickup info
2271           and the pickup call might or might not happen in any
2272           particular run
2273      - this needs an overhaul for R2
2274    o cleanup verification/*/code/GMREDI_OPTIONS.h
2275    o cleanup testreport
2276    
2277    checkpoint51o_post
2278    o bringing AD-related verif's up to date with genmake2
2279      - carbon/
2280      - global_ocean.90x40x15/
2281      - hs.94.1x64x5/
2282      - (front_relax/ )
2283    o (more) consistent directory structure for AD-related verif.'s
2284    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2285    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2286    o bug fix in find_alpha.F for MDJWF:
2287      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2288        change rho -> rho-rhoConst
2289      - replace call find_rho to find_rhonum
2290    o initialisation of rFlx extended to full array (required by TAF)
2291      and shifted to thermodynamics
2292    o removed PTRACERS.h in ptracers routine
2293    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2294    o Correcting initialisations for fVerU, fVerV.
2295    o helping TAF to recognize dependency on kUp for
2296      fVerU, fVerV
2297    o Replacing delZ by delR in pkg/ctrl/
2298    checkpoint51o_pre
2299    
2300    o undid all of cp51 pending some cleanups and discussion
2301    o added the [#include "AD_CONFIG.h"] statement to all files that need
2302       it for adjoint/tl #defines
2303     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2304     o removed tools/genmake since it no longer works
2305    
2306    checkpoint51n_post
2307    o modifications to make FREEZE flux visible to pkg/kpp
2308      - moved surfaceTendencyTice from pkg/seaice to main code
2309      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2310      - subroutine FREEZE now limits only surface temperature
2311        (this means new output.txt for global_ocean.90x40x15,
2312         global_ocean.cs32x15, and global_with_exf)
2313    o added surface flux output variables to TIMEAVE_STATVARS
2314    
2315    checkpoint51n_pre
2316    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2317    o added [#include "AD_CONFIG.h"] to all files that use the following
2318      defines:
2319      - ALLOW_ADJOINT_RUN
2320      - ALLOW_TANGENTLINEAR_RUN
2321      - ALLOW_ECCO_OPTIMIZATION
2322    
2323    checkpoint51m_post
2324    o incorporating changes to get TAMC/TAF working in genmake2
2325      - added new TAMC/TAF targets to the Makefile
2326      - various cleanups related to package handling
2327      - these changes should have no impact on the forward model
2328    
2329    checkpoint51l_post
2330    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2331     - faster algorithm for cal_addtime.F
2332     - higher precision arithmetic, where needed
2333     - pkg/exf *startdate variables changed from calendar date to
2334       model integration time
2335    
2336    checkpoint51l_pre
2337    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2338    o enable to apply restoring on S & T only in a latitude band.
2339    o update output (external_forcing_surf modif. change truncation errors)
2340       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2341    
2342    checkpoint51k_post
2343    o change default to: useNHMTerms=.FALSE.
2344     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2345       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2346     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2347        exp1, ideal_2D_oce
2348     - change data file of oceanic exp (leave the results unchanged for now)
2349       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2350    o set gravitySign automatically according to the vertical coordinate used
2351      (and change sign: back to "logical" value: +1 when R increases downward)
2352    o added an include barrier to the default CPP_OPTIONS.h and
2353      removed the #include "PACKAGES_CONFIG.h" from it
2354    o fix a bug in mom_fluxform (from chk51j_post)
2355    
2356    checkpoint51j_post
2357    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2358    o adjusted some flow directives (dynamics, thermodynamics)
2359    o added cubed-sphere case to test cost function
2360    o heckpoint_lev?_directives.h now include
2361      pkg-specific directives, whenever those are enabled.
2362    o Moving pkg-specific flow directives to corresponding pkg
2363      Moving pkg-specific differentiation list to corresponding pkg
2364      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2365      ---> conventions are
2366           - pkg_ad.flow
2367           - pkg_ad_diff.list
2368           - pkg_ad_check_lev?_dir.h
2369    
2370    checkpoint51i_post
2371    o merge of the branch-genmake2
2372      - knowingly breaks the older genmake
2373      - automatic generation of all ALLOW_${PKG_NAME} defines
2374      - new testreport supersedes older testscript
2375    o large number of package inclusion and header cleanups
2376    checkpoint51i_pre
2377    
2378    o new output for adjoin of global ocean vector invariant
2379    o fix for checkpoint of thermodynamic seaice and bulk_force
2380    o Steph gchem various cleanups
2381    
2382    checkpoint 51h_pre
2383    o fixed some single quotes
2384    o modify gchem pkg to be more versatile
2385    o modifications to clean up dic pkg
2386    o add pkg/cfc
2387    
2388    checkpoint51g_post
2389    o provide links for ARPACK and ADM*TLM
2390    o start removing verification/vero/
2391    o update AD-related stuff
2392      (in particular some IF-statements in model/src/ routines)
2393    o adding to verification/global_ocean.90x40x15/ adjoint of
2394      vector invariant setup
2395    
2396    checkpoint51f_post
2397    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2398    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2399      of tracer Green's fucntions for ocean inversion project.
2400    
2401    checkpoint51f_pre
2402    o Added on-the-fly spatial interpolation capability
2403        "USE_EXF_INTERPOLATION" to pkg/exf.
2404      - This is a temporary Cartesian-grid hack until
2405        the super-duper ESMF coupler becomes available.
2406      - See verification/global_with_exf/README for usage example.
2407      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2408        flags and modified pkg/seaice accordingly.
2409    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2410        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2411        non-local transport term.
2412    
2413    checkpoint51e_post
2414    o pkg/mom_vecinv:
2415      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2416      - add time-ave diagnostic of vorticity advection.
2417    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2418    o atmospheric geopotential: - include water vapor effect;
2419                                - use p^kappa in p* scaling.
2420    o land pkg: read initial state from files.
2421    o AIM : add stratospheric drag in the upper level
2422    
2423    checkpoint51d_post
2424    o change function ILNBLNK (=> last non-blank char.) to return zero
2425      (instead of the string length) when the string. char is empty
2426    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2427    o modif's to restore TAMC compatibility
2428      - avoid "_d" constructs in PARAMETER declarations
2429      - avoid interrupting lines by comment lines
2430    o Use cluster local disks for purely local I/O
2431      vs. globally visible disks needed for ctrl stuff
2432      (merged from ecco-branch)
2433      - new active_file_loc... and mdsio_..._loc routines
2434      - affected packages: autodiff, ctrl, grdchk, mdsio
2435    
2436    checkpoint51c_post
2437    o introducing integer flag debugLevel
2438      - debLevZero: suppress all output
2439      - debLevA: standard
2440      - debLevB: equivalent to current debugMode=.TRUE.
2441    o introducing pathname variable mdsioLocalDir for mdsio
2442      that can be specified at runtime
2443      (relevant for cluster I/O to local disk)
2444    `
2445    >>>checkpoint51b_post
2446    adjoint of ptracers
2447    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2448    o extended state in checkpoint_lev?, etc.
2449    o alternative ctrl/cost with tr1 or ptracer
2450    o new comlev1_bibj_ptracers
2451    o new ptracers.flow
2452    o made ptracers_forcing same as external_forcing_s
2453    o added verification for adjoint with ptracers
2454      - adm. grdchk fail so far
2455      - tlm. grdchk OK
2456      - checked tapelev/comlev recomputations: OK
2457    <<<checkpoint51b_pre
2458    
2459    checkpoint51a_post
2460    o added code for biogeochemistry package
2461      - new pkgs: dic, gchem
2462      - new subroutine in ptracers
2463    o modify code for biogeo packages
2464      - in model/src and pkg/ptracers
2465    
2466    checkpoint51
2467    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2468      - autodiff, ctrl, exf, grdchk, seaice
2469      kept separate packages
2470      - cost, ecco, obcs
2471    o updating verification/internal_wave, verification/lab_sea
2472      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2473    
2474    checkpoint50i_post
2475    o Preparing next differentiable checkpoint and sync
2476      of MAIN vs. ecco-branch
2477      - 1st step: this one is differentiable
2478      - 2nd step: next(! not this) checkpoint will have updated packages
2479                  from ecco-branch)
2480    
2481    checkpoint50h_post
2482    o new package "land": provide surface BC for AIM.
2483    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2484    o AIM: use true log-P extrapolation for near surface temp (= as in
2485        F.Molteni paper) ; update aim.5l_cs output.
2486    o New variable in PARM03 for more flexible pickups
2487    o somewhat cleaned package initialisation sequence for
2488      ctrl/ cost/ ecco/ in packages_... routines
2489    
2490    checkpoint50g_post
2491    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2492      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2493      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2494        made the default because of faster convergence than ADI
2495    
2496    checkpoint50f_post
2497    o exf totally restructured
2498      - replaced all exf_set_ routines by one generic exf_set_gen.F
2499        and made sure it's still differentiable
2500      - split exf_getffields.F into new exf_bulkformulae.F
2501      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2502      - updated adjoint/makefile and relevant verif. accordingly
2503    
2504    checkpoint50f_pre
2505     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2506          + change Evap over land. (update aim.5l_cs output)
2507     o added missing .cvsignores and made uniform across expts
2508     o changed configuration of tidal_basin_2d expt
2509     o added pkg/debug functions for tracing code in fatal crashes
2510     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2511     o new fn in pkg/monitor to stop model if solution grows too big
2512     o removed lots of single quotes from comments
2513    
2514    checkpoint50e_post
2515    o make KPP work with PTRACERS
2516     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2517       nearly a copy of kpp_transport_s
2518     - there is no analogue to SurfaceTendencyS, so I have to use
2519       gPtr(of the surface layer) instead
2520    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2521    checkpoint50e_pre
2522    
2523    checkpoint50d_post
2524    o change kpp output from multiple-record state files to single-record state
2525      files analogous to write_state.F
2526    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2527      analogous to the cg2d-related output.
2528    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2529      so that writing to internal file fn (with length 512) fails.
2530    checkpoint50d_pre
2531    
2532    checkpoint50c_post
2533    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2534    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2535    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2536    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2537    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2538    
2539    checkpoint50c_pre
2540    Merging from release1_p13:
2541    o bug fix for pkg/seaice dynamic solver
2542    o Added SEAICE_initialHEFF to pkg/seaice
2543    
2544    checkpoint50b_post
2545    o store u*,v* in gU,V instead of in guNm1,gvNm1
2546    o in order to put the momForcing out of the Adams-Bashforth:
2547      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2548      to timestep.F
2549    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2550    o re-generate output for highly sensitive test-exp:
2551       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2552    
2553    checkpoint50b_pre
2554    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2555    o corrected CPP option mismatch in exf_Bulk... functions for case
2556      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2557    
2558    checkpoint50a_post
2559    o Bug fix for merging between c50 and KPP.
2560      ikey was passed from thermodynamics to kpp_calc via
2561      common block rather than being recomputed in kpp_calc,
2562      in contradiction with new key itdkey.
2563      New key ikppkey created, and tamc.h headers updated.
2564    
2565    checkpoint50
2566    - 2nd step of merge with ecco-branch:
2567      merge changes in ecco-branch back into main trunk
2568    - bug fix in find_alpha
2569    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2570    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2571    - merged some sliced AD support routines
2572    
2573    checkpoint49
2574    merged from ecco-branch:
2575    o exf:
2576      - Enable initialisation of forcing fields to constant
2577        (runtime) values.
2578      - in exf_getffields.F
2579        Reduce i-/j-loop to interior domain, discarding overlaps.
2580        That also fixes wrong TAF-key computations for key_1, key_2
2581        with bulf formulae.
2582      - exf_init.F modify #ifdef for exf_init_evap
2583      - exf_getffieldrec.F, ctrl_getrec.F
2584        The following INT-usages are not safe:
2585          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2586          fldcount = int(fldsecs/fldperiod) + 1
2587        and were modified.
2588    o autodiff: checkpoint_lev...
2589      - updated storing for bulk formulae (some arrays were missing)
2590      - added state for seaice package
2591      - synchronized with main branch
2592    o DIVA:
2593      Modif.s in
2594      - the_main_loop.F
2595      - the_model_main.F
2596      and added cost_final_restore.F cost_final_store.F
2597      o With these changes, it is possible to fully separate
2598        the first forward run to compute the cost function (mdthe_main_loop)
2599        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2600        into separate model executions.
2601        This enables better tuning of DIVA to given queue sizes.
2602      o Loss of cost function value in consecutive DIVA runs is
2603        fixed by storing to 'costfinal' file.
2604      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2605        beginning/end of adjoint integration is accounted for.
2606      The current changes apply to TAF-1.4.26.
2607      TAF has one remaining bug, requiring one manual change
2608      (see MITgcm manual).
2609    o cal: synchronized between MAIN and ecco-branch
2610    
2611    checkpoint48i_post
2612    o Changes to restore differentiability of code w.r.t. previous tag
2613      (mostly adding new routines to make list and replacing
2614      pressure by totPhiHyd).
2615    o Updated and merged grdchk package
2616      - has both ADM and TLM checks
2617      - works for single- and multi-proc.
2618      - output cleaned
2619      - worked successfully for parallel DIVA
2620    o genmake:
2621      - Adding -platform=SP4
2622      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2623    o Modif. for DIVA:
2624      ctrl_unpack should not be called in intermediate DIVA interval.
2625      (similar thing would apply for active files such as
2626      tbar, sbar, psbar, which should not be reinitialised;
2627      only relevant for ecco-branch)
2628    
2629    checkpoint48h_post
2630    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2631    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2632    o Added SEAICE_initialHEFF to pkg/seaice
2633    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2634    
2635    checkpoint48g_post
2636    --- EOS:
2637    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2638      store total Potential in totPhyHyd for diagnostics & EOS.
2639    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2640    --- Pressure/geopotential gradient:
2641    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2642    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2643      ( changes results of global_ocean_pressure )
2644    o NLFS + z-coord.: add eta*Rho' contribution.
2645    o accurate phiHyd when using interface-W at the middle between 2 centers
2646     ( changes results of ideal_2D_oce )
2647    o includes r* 2nd term in potential gradient.
2648    
2649    checkpoint48f_post
2650    Merging from release1_p12:
2651    o Modifications for using pkg/exf with pkg/seaice
2652      - improved description of the various forcing configurations
2653      - added basic radiation bulk formulae to pkg/exf
2654      - units/sign fix for evap computation in exf_getffields.F
2655      - updated verification/global_with_exf/results/output.txt
2656    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2657      (SBO) core products, including oceanic mass, center-of-mass,
2658      angular, and bottom pressure (see pkg/sbo/README.sbo).
2659    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2660      to avoid negative values in shallow regions.
2661      - updated verification/natl_box/results/output.txt
2662      - updated verification/lab_sea/results/output.txt
2663    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2664    o Added useSingleCpuIO option (see PARAMS.h).
2665    o Updated useSingleCpuIO option in mdsio_writefield.F to
2666      work with multi-field files, e.g., for single-file pickup.
2667    o pkg/seaice:
2668      - bug fix in growth.F: QNET for no shortwave case
2669      - added HeffFile for specifying initial sea-ice thickness
2670      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2671    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2672      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2673    o pkg/seaice:
2674      - adjoint-friendly modifications
2675      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2676    
2677    checkpoint48e_post
2678    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2679    o dynamics: change definition of computational domain & adapt mom_fluxform
2680      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2681    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2682        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2683        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2684        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2685        inverted_barometer solid-body.cs-32x32x1
2686      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2687    
2688    checkpoint48d_post
2689    o in preparation for r*:
2690     a) use pre-computed gradient of hydrostatic potential:
2691        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2692     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2693        => affects results of glob_oce_pressure (different truncation error)  
2694      update output.txt of ideal_2D_oce & global_ocean_pressure
2695    
2696    checkpoint48d_pre
2697    o in preparation for r*:
2698      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2699      pass the 2 comp. of the grad. as arguments to momentum S/R.
2700      but for the moment, only used if it does not change the results.
2701    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2702    
2703    checkpoint48c_post
2704    Modifications in treatment of initial flux forcing controls
2705    to avoid extra storing of flux fields.
2706    
2707    checkpoint48c_pre
2708    o Added tidal_basin_2d experiment (currently 1D!)
2709    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2710    
2711    checkpoint48b_post
2712    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2713     (modification to pressure gradient not yet implemented)
2714    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2715      (for U & V) that are used for vertical advection of momentum.
2716    
2717    checkpoint48a_post
2718    o In preparation for r*, use temp. array to compute vertical transport
2719       in flux-form momentum pkg. => change results of few test-exp.
2720      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2721                        lab_sea, natl_box & plume_on_slope
2722    
2723    checkpoint48
2724    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2725    
2726  checkpoint47j_post  checkpoint47j_post
2727  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2728  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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