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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.879 by mlosch, Wed Sep 19 09:41:50 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/seaice:
8      - bug fix in the evp solver: boundary conditions were affected be
9        masking of zMax/zMin (changes results)
10      - minor bug fix in boundary conditions in seaice_calc_strainrates
11        (changes results for no_slip)
12      - seaice_lsr.F: make interpolation of eta dependent on boundaries
13      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
14      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
15        stress formulation and no-slip boundary conditions
16    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
17      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
18    o pkg/seaice: a first HSALT time stepping equation has been checked in
19    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
20      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
21      without requiring DO-IF statements
22    o pkg/thsice:
23      use continuous power-law function for partition of energy between lateral
24      melting/freezing and thinning/thickening ; old code using step function
25      still available with #undef THSICE_FRACEN_POWERLAW
26      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
27    o testreport: change AD testing : check against results/output_adm.txt
28      using same scripts as for forward test.
29    
30    checkpoint59g
31    o adjoint testing: in preparation for changing testreport:
32      - output format: cost and grad written on separated lines
33      - ad output results in directory "results" (instead of "results_ad")
34    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
35    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
36    o pkg/ecco: allow user defined cost function contributions
37    o testreport:
38      Allow to choose (per experiment) the list of tested output variables
39       and the main variable (used to issue a pass/FAIL ) ;
40      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
41      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
42      Also modify printing of summary:
43       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
44       b) echo the list of tested variables in the individual summary.txt of
45          each experiment.
46    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
47      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
48      (but still depend on the tile decompostion of the domain).
49    o pkg/seaice: change a discretization detail to make the B-grid code
50      "more symmetric". This change is likely to remove all "ridges/leads" that
51      where quasi-aligned with the grid in B-grid solutions. It may also be
52      the solution to the stress coupling issues with the B-grid.
53    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
54      remove .cvsignore from input dir. (since testreport no longer run here).
55    o pkg/thsice:
56     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
57     - fix reshaping of sea-ice just after advection:
58       melt all the ice only if ice-volume is too small.
59     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
60       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
61     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
62    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
63      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
64    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
65      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
66      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
67      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
68      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
69      -> update output.txt
70    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
71     this affects truncation error: -> update output.txt of exp:
72      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
73      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
74    
75    checkpoint59f
76    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
77    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
78      a bounded range (in forward mode)
79    o pkg/ecco, ctrl, autodiff and mom_common:
80     internal parameter controls, completements of implementations
81    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
82    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
83      (not seem any difference in testing results).
84    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
85       at face corners.
86    o pkg/generic_advdiff:
87     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
88      loop range indices for computing vertical advection tendency
89      and do the calculation in the interior only (no overlap) ;
90      for now, only implemented for SOM advection (to save CPU time).
91     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
92    o exch2 adjoint
93      First set of changes:
94      - add exch2 hand-written adjoint templates
95      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
96        This will require cleanup in pkg/autodiff/*.F
97        (changed routines currently kept separate in verif. code/)
98      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
99        that used to hide exch2 or cubed-sphere specific code
100        (commented via 'cph-exch2')
101    o pkg/seaice
102      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
103    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
104       output of global_ocean.cs32x15.thsice .
105    
106    checkpoint59e
107    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
108      for B-grid vector (not yet tested) and C-grid vector (<- only used
109      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
110    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
111      (#ifdef ALLOW_SALT_PLUME)
112    o gather_2d/scatter_2d: removed halo regions
113    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
114      scheme and the corresponding test case (under front_relax dir). For now,
115      only available with Skew-flux form and not yet tested in realistic set-up.
116      adjoint: store directives updated, but gradient checks deteriorated,
117      so maybe GM/Redi adjoint is now broken.
118    o seaice adjoint
119      * add AREA, HEFF, HSNOW as control variable
120        (should not change lab_sea results)
121      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
122    o pkg/seaice:
123      * added computation of saltFlux in seaice_growth;
124        For time being, sea ice salinity is assumed constant
125        contribution of snow flooding to freshening of sea ice is neglected.
126        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
127        defaults to 0.0 in order to maintain backward compatibility.
128        Typical values for SEAICE_salinity are 4 to 10 g/kg.
129      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
130      * added SEAICE_availHeatFrac, which specifies fraction of surface level
131        heat content used to melt or grow ice
132      * commented out cap of HICE: it helps keep ice thinner
133      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
134      * applied OBCS T/S mask to HEFFM sea ice mask
135    
136    checkpoint59d
137    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
138     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
139     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
140    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
141     and change default value of parameter "GM_Small_Number";
142     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
143       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
144       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
145    o pkg/ecco: cost function when applying pkg/smooth to controls
146    o pkg/ctrl: add forcingPrecond run time parameter
147    o pkg/seaice:
148     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
149     - fix bug in metric terms of u-equation in LSR solver (implicit part),
150       changes verification/lab_sea
151     - rearrange implicit part of u-equation in LSR solver to make it easier to
152       read, understand, and debug. This causes changes at the truncation level.
153     - fix (serious) bug in the boundary conditions (sign error in the implicit
154       part) of the LSR solver. Changes all LSR results.
155     - fixed problem with HSNOW initialization to avoid thick snow when AREA
156       is initilized with small values - does not change lab_sea results.
157     - added HsnowFile initialization capability
158    o pkg/smooth: addition to model/src and pkg/ctrl so allow
159     initialization of pkg/smooth and application to control vector
160    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
161    o dependencies: pkg/profiles requires pkg/cal
162    o pkg/profiles:
163     - added option ALLOW_PROFILES_GENERICGRID
164         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
165         that interpolation information (grid points and coefficients) is provided
166         within the netcdf input files.
167         -> sample matlab scripts can be found in MITgcm_contrib/gael
168         that allow you to prepare netcdf input files.
169     - also modified: cleaner include statements, cleaner error print statements,
170       cleaner stops when error, and more tests of the netcdf input files consistency.
171    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
172    o pkg/seaice:
173     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
174       requires a new routine: seaice_diagnostics_fill.F
175     - make sure that seaice does not move if not forced (pressure replacement
176       method, Hibler and Ip, 1995), changes results
177     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
178     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
179       It is turned off by default (=-1.), because it changes the results.
180     - make it possible to read AREA from a file, too.
181    
182    checkpoint59c
183    o add S/R and diagnostics for oceanic mixed-layer depth
184    o move GMRedi call after all vertical mixing schemes (including KPP)
185    o pkg/thsice:
186     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
187      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
188    o pkg/obcs:
189     - bug fix for balance code
190    o pkg/seaice:
191      - allow values of SEAICE_elasticParm > 1
192      - add new parameter SEAICE_evpTauRelax as an alternative
193        to SEAICE_elasticParm
194      - make lsr boundary conditions free slip (by default), changes result
195      - add code for no slip boundary conditions for lsr
196      - set minimum of zeta to zero (and not 4e8) (changes results)
197      - add a cap on AREA after advecting AREA if seaice_growth is not called
198    o change calculation of Visbeck K:
199      - no longer depend on tapering scheme; instead, compute slope (limited
200        by GM_maxSlope). this is equivalent to what was comuted before with
201        clipping or linear tappering.
202      - fix vertical averaging (wrong by 1/2 level)
203      - leave the old version (but will not be maintained) within
204        #ifdef OLD_VISBECK_CALC / #endif
205      - update output of exp. ideal_2D_oce
206    o change error catch in calc_r_star to improve vectorization
207    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
208      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
209    o adjoint:
210      Re-organized adjoint checkpointing according to Matt Mazloff
211      (but with modifs/completions/cleanups)
212      Storing is now bundled into large arrays to optimized I/O
213      (and second step in cleanup of the_main_loop)
214    
215    checkpoint59b
216    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
217      - export/import (between ocean & coupler) fields needed for ocean DIC.
218    o pkg/seaice:
219      - get rid of three more exchanges seaice_calc_viscosities (required
220        different loop boundaries in seaice_lsr and seaice_ocean_stress)
221      - bug fix in seaice_ocean_stress (update of lab_sea required)
222      - reduce loop boundaries to necessary minimum also in seaice_evp
223      - go back to the old way of computing deltaC/Z as the adjoint likes that
224        better
225    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
226      passive tracer to an Age Tracer) + update output.txt
227    o pkg/exf:
228      - implement A-grid / C-grid selection for wind-stress input files.
229      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
230      for now, in exf_bulk_largeyeager04.F only :
231      - change implementation for case where windspeed + 2. components wind-stress
232        are read-in. AND use rhoConstFresh to convert evap.
233    o pkg/seaice:
234      - use correct EXCH_UV for wind-forcing (on A-grid).
235      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
236        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
237    o pkg/exf:
238      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
239      EXF_INTERPOLATION:
240      - merge global_with_exf/code version of exf_interp_read.F
241        to the main code ;
242      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
243        reading the file ; Important: This options needs to be defined to recover
244        previous code.
245        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
246      - no longer loose real*8 precision along the way when using exf_iprec=64.
247    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
248      - change discretisation of evp-solver in order to avoid another exchange
249        (changes lab_sea) and clean up a little
250      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
251        help the adjoint (this also changes the results slightly)
252      - add a few "_d 0" where they had been missing in seaice_evp.F
253      - cleaning up: remove unused seaice_calc_rhs.F
254    o pkg/exf: some cleaning-up:
255      - change various "constants" into runtime parameters
256      - cleaned-up Large&Yeager04 routine which should eventually
257        replace exf_bulkformulae.F (changed names of S/R and CPP)
258        and merged various ALLOW_ATM_WIND options
259     only used with thsice pkg (in thsice_get_exf.F):
260      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
261        which are used when useStabilityFct_overIce=TRUE (= the default)
262      - change default values of ice & snow emissivity and scale downward LW
263        by ice & snow emissivity.
264    o pkg/thsice:
265     fix few little problems, in thsice_calc_thickn.F:
266      - growth vertically (and not laterally) if iceFrac == iceMaskMax
267      - melt only laterally if hIce < hThinIce (as the comments say)
268      and in thsice_extend.F:
269      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
270      - start to form ice as soon as the minimum ice-volume is reachable.
271     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
272      and cpl_aim+ocn
273    o pkg/kpp
274     - move computation of surface related input fields to KPP into a new
275       subroutine kpp_forcing_surf.F
276     - remove wrong (within bi,bj loops) EXCH calls.
277     - little cleaning (add argument myThid in last position, cvs header ...)
278     - for now, fix conservation problem by exchanging KPPviscAz (may not
279       be the best fix)
280    o pkg/seaice
281     - check for inconsistent evp parameter/cpp-flag combination
282     - remove leftover errIO flat for obsolete name list error handling
283    o OpenAD
284     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
285    
286    checkpoint59a
287    o pkg/seaice: some parameter clarifications and a little bit of clean up
288    o pkg/thsice: rename run-time parameters:
289       himin       -> hIceMin
290       himin0      -> hThinIce
291       hihig       -> hThickIce
292       i0          -> i0swFrac
293       transCoef   -> bMeltCoef
294       frac_energy -> fracMelting
295      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
296       with default values (for now) that do not change the results.
297      remove old version of thsice vars advection in pkg/seaice.
298    o in FFIELDS.h:
299      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
300      - make pLoad & sIceLoad always available (but still only used if
301         ATMOSPHERIC_LOADING is #define).
302    o pkg/kpp: replaced _KPP_RL with _RL
303    o bug fixes for vertical diffusivity computations when both KPP and
304        3D diffusivity arrays are used.
305    o pkg/seaice: fix bug in evp solver, while doing that
306      - change (improve?) discretization of stress computations for both
307        cgrid-lsr and evp solver
308      - add a new routine to compute strain rates
309      - the above changes lab_sea results
310      - add no slip conditions for evp solver (off by default), lsr-version
311        may follow
312      - fix exchange for shear at Z-points (does not change lab_sea)
313      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
314        (to force the user to pick a time step since there is not "safe" way
315        of choosing it)
316      - add principal stress diagnostics
317      - rearrange fields for evp a little to avoid having to call a: too many
318        exchanges and b: exchanges for stress trensor components which we do
319        not have.
320      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
321        of evp, complete rewrite for lsr case (latter is does not yet work
322        in all cases)
323    o pkg/kpp: add code to have mixing in shelf ice caverns
324      - add myThid to all kpp routines (long overdue)
325    
326    checkpoint59
327    o pkg/exf:
328      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
329        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
330      - move exf header files from lower_case.h to UPPER_CASE.h ;
331        add missing cvs Header & Name
332      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
333      - add namelist param. selectStressGridPosition, exf_monFreq
334      - retire many _CLIM routines, and remove data.exf_clim
335        + params moved to data.exf
336        + climsst, climsss now handled by exf_set_gen, i.e.
337          climss?period=0 refers to constant field,
338          climss?period=-12 to monthly forcing
339      - split up namelists in data.exf
340    o pkg/seaice:
341      - remove seaice_exch and seaice_exch_uv
342      - remove superfluous exchange of theta
343      - add myThid to seaice_budget_ocean/ice
344      - add new interface for atmospheric wind forcing (C-grid only)
345        + new routine
346        + two new field (taux, tauy for stress over ice)
347        + removed one global field (DAIRN) for C-grid case only
348    o pkg/thsise
349      - 2nd set of modifs for thsice adjoint in conjunction with exf
350    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
351    
352    checkpoint58y_post
353    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
354      vertical diffusivity, similar to that in MOM4; turned on using
355      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
356      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
357    o Added capability for 3D specification of background vertical diffusion
358      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
359      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
360      "data" file that contains the 3D vertical diffusivity coefficients.
361    o ice dynamics (pkg/seaice) with thsice thermodynamics:
362      - add code within pkg thsice to advect & diffuse sea-ice fields
363      similar to (and will replace) what has been added in  seaice_advdiff.F,
364      but: - conserving Mass, Heat & Salt.
365           - better when using non-linear advection scheme (not yet fully tested)
366           - can also be used in atmospheric set-up (for now, only the diffusion).
367    
368    checkpoint58x_post
369    o IO option for global-file compact format:
370      - add options when generating topology (utils/exch2/matlab-topology-generator)
371      - add I/O capability (pkg/mdsio).
372      - adapt utils/matlab/rdmds.m to read this format.
373      for now long-line format not yet supported by pkg/mdsio (& exch2).
374    o shelfice: add a few diagnostics
375    
376    checkpoint58w_post
377    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
378      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
379      (and replace horiVertRatio in NH code).
380      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
381                         and tutorial_plume_on_slope (sensitive to truncation)
382    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
383      directly to drive seaice model (C-grid only)
384    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
385     - reintroduce computation of wind from stress,
386     - compute tau (in exf_bulkformulae.F) from windstress averaged to
387       mass points to avoid tau = 0
388     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
389    o rdmnc.m: make it work with "global" files created with gluemnc
390    o rdmnc.m : some improvements in dealing with singleton dimension
391      (tested on all testreport mnc output files).
392    o genmake2: disable pkg/profiles if netcdf test fails.
393    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
394    o move call to cal_readparms up to make calendar parameters/variable available
395      to all packages
396    
397    checkpoint58v_post
398    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
399      useDynP_inEos_Zc tested.
400    o pkg/exf: changes to properly interpolate/mask/scale initial fields
401    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
402      and portions thereof.  See read_cs.txt for description and examples.
403    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
404      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
405      following the great-circle arc between those 2 points.
406    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
407      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
408    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
409     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
410     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
411     - still needs work (not working with some options ; efficiency to improve)
412       and serious testing.
413     - use this scheme for temperature & salinity in 2 advection test exp.:
414       advect_xy & advect_xz, respectively.
415    
416    checkpoint58u_post
417    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
418    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
419    o testreport: add option "-skipdir" to skip some test.
420    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
421      momentum calculation.
422    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
423    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
424      remove checkpoint.F and the_correction_step.F (no longer used);
425      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
426    o add option (linFSConserveTr) to correct for tracer source/sink due to
427      Linear Free surface
428    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
429    o pkg/thsice: fix reading mnc-pickups
430    
431    checkpoint58t_post
432    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
433    o pkg/mdsio:
434     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
435       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
436       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
437     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
438     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
439       either MDS_READ_FIELD or MDS_WRITE_FIELD )
440     - new S/R (to replace MDSWRITEMETA), which allows to write more
441       informations (variable names, time ...) to meta files.
442     - modify rdmds.m to give back the meta file content.
443    o pkg/diagnostics: change vertical interpolation to be safer, and more
444       flexible (define p-levels to interpolate to in data.diagnostics);
445      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
446       diagnostic pointer.
447    o pkg/seaice: more cleaning up of seaice_growth, added many comments
448    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
449    o fix multi-category seaice:
450     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
451       SEAICE_MULTICATEGORY
452     - fix short wave heat flux
453    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
454       and allow to use EVP solver. Change forward lab_sea: test both EVP
455       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
456    o Initial check-in of lab_sea adjoint
457      (very similar to natl_box_adjoint/code_seaice)
458      * used C-grid and EVP solver
459      * used KPP, GM/Redi
460      * uses inAdExact=.TRUE.
461      * gradient checks fail for both ADM and TLM
462        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
463        f.d. gradients actually seem more problematic than ADM, TLM gradients;
464        issue is related to forward mismatch between g77 an ifort
465    o pkg/seaice: overhaul of thermodynamics
466     - growth.F and groatb.F are replaced by new routine seaice_growth.F
467     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
468     - move a few global fields out of SEAICE.h into seaice_growth.F and
469       make them 2D (FICE/QNETO/ ...)
470     - remove FO (it is the same as QNETO)
471     - introduce a few local fields to avoid modifying external fields such
472       as atemp, etc.
473    
474    checkpoint58s_post
475    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
476      changed exf_set_gen.F so that
477        genperiod=0 means input file is one time-constant field and
478        genperiod=-12 means input file contains 12 monthly means
479    o CG2D: use pre-computed solver main-diagonal (stored in common block);
480      this affects truncation error ; generate new output file for exp. which
481      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
482        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
483        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
484        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
485        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
486        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
487    o start implementation of deep-atmosphere and anelastic formulation
488    o verification: remove 2nd copy of input files and use script "prepare_run"
489      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
490    o mom_common/vecinv/fluxform: fix a few initialisation isssues
491    o profiles: fix for multithreaded case
492    
493    o diagnostics: rename few diags:
494      s/'PRESSURE'/'RCENTER '/g
495      s/'TICE    '/'oceFreez'/g
496      s/'TAUX    '/'oceTAUX '/g
497      s/'TAUY    '/'oceTAUY '/g
498      s/'SWFLUX  '/'oceQsw  '/g
499      s/DIFx/DFxE/g
500      s/DIFy/DFyE/g
501      and add few ocean-forcing diagnostics:
502      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
503    o modifications to pkg/seaice/growth.F and budget.F, which change results of
504      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
505      as actual snow thickness.  It now refers everywhere to effective snow
506      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
507    
508    checkpoint58r_post
509    o modifications to pkg/seaice/growth.F, which change results of
510      lab_sea experiment: fixes pertain to melting snow over open water, to
511      masking EVAP under sea ice, and to using the correct AREA variable for
512      computations of EVAP, PRECIP, HSNOW, and GHEFF
513    o add ability to read bathy, salt, and theta using MNC (off by def)
514    o add flooding algorithm and advection of HSNOW for pkg/seaice;
515      both are turned off by default and do no change any results
516    o seaice advection with pkg/thsice: a step toward the use of non-linear
517      advection scheme, but #ifdef or commented out for now (requires more EXCH).
518    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
519      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
520      in natl_box (affects results @ truncation level: update output.txt)
521    o multi-threading and IO:
522      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
523      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
524        (needed to work with SingleCpuIO): tested in all verif. exp.
525    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
526      affects the results (but none of the verification test uses this scheme).
527    o Adding some pkg/diagnostics capability to pkg/seaice
528      (will certainly be subject to changes)
529    o ctrl: adding new control variables:
530      lwflux, lwdown, evap, snowprecip, apressure, runoff
531    
532    checkpoint58q_post
533    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
534      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
535      high_res_cube configuration by 4% on Columbia.
536    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
537      add (in global_with_exf/code) a version of EXF_INTERP_READ without
538      dynamical allocation (seems to work in multi-threaded).
539    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
540      single CPU io) so that TAF does not have to see EESUPPORT.h
541    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
542    
543    checkpoint58p_post
544    o obcs: stop if obcs is used with useCDscheme = .true.
545    o shelfice:
546     - fix a sign error so that no slip at shelfice interface works
547     - remove stop for combination non-hydrostatic code and shelfice. That does
548       not mean, that the results are correct, but at least they are numerically
549       stable
550    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
551    o added adjoint exch routined for all exch*3d* routines
552      and updated flow directives
553    
554    checkpoint58o_post
555    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
556      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
557    o change controling S/R for writing pickup file (new S/R do_write_pickup)
558      and clean-up reading/writing of pickup files.
559    o fix local version of read/write pickup (NH part) in rotating_tank/code
560    o simplify EXCH interface:
561     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
562     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
563    o added the regrid package
564    o shelfice:
565     - add a simple boundary layer scheme to reduce noise
566     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
567    
568    checkpoint58n_post
569    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
570       local variable (not in common block).
571    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
572      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
573      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
574        to work with SingleCpuIO.
575    o add "_d 0" to real constant of pkg/cfc subroutines ;
576       update exp. cfc_exemple & tutorial_cfc_offline output files.
577    o multi-threading and IO:
578      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
579        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
580      - barrier before and after reading.
581      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
582      - avoid using MDS_WRITELOCAL for LAND pkg output.
583      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
584        common-block variables ; Allows multi-threading with master-thread IO.
585    o change default MAX_NO_THREADS from 32 to 4 ;
586      and stop cleanly when MAX_NO_THREADS is too small.
587    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
588    
589    checkpoint58m_post
590    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
591       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
592    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
593       keep global_ocean.90x40x15 (for AD testing) with former secondary test
594       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
595    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
596        add MITgcm_tutorials (= code + all the tutorials)
597    o ecco, option to compute cost for total ssh (mean+anom)
598    o consistent with addition of ptracer and ssh in pkg/profiles
599    o profiles: adding ptracer and ssh
600    o testreport: change multi-test output-file name
601      (from output.txt.{name} to output.{name}.txt)
602    o profiles: now ok for mutli-tiles case
603    o seaice: add 4 parameters for different advection schemes for area,
604      (effective) seaice thickness, enthalphy, and snow height. Their default
605      is the standard parameter SEAICEadvScheme
606    o calc_gw:
607     - add cosFacU in zonal viscous flux (harmonic.visc.).
608     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
609       of tutorial_plume_on_slope.
610    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
611    o calc_gw: true flux-form, account for horizontal grid spacing.
612      update rotating_tank results, but not plume_on_slope (affected at
613      truncation level, 11 digits).
614    
615    checkpoint58l_post
616    o calc_gw:
617     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
618     - remove side-drag for now (need to fix it); update plume_on_slope results.
619     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
620    o commit code to make SST/SSS weights spatially variable
621      (based on either variable in-situ or variable initial T/S weights)
622    o pkg/ecco:
623      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
624        now based on horizontally varying weights wthetaLev, wsaltLev
625      * cost_averagesflags now returns year indices in addition to day, month
626      * sflux balance is performed on annual basis
627        (sflxumm, sfluxmm2, bal_sfluxmm)
628      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
629        including separate counting and multipliers
630    o pkg/rbcs
631      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
632    
633    checkpoint58k_post
634    o testreport:
635     - always build in dir. "build" (if not there, mkdir build instead of building
636       & running in input)
637     - run in dir run (if it exists), in build otherwise.
638     - call prepare_run (if input/prepare_run exists)
639     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
640    o pkg/exf modifications to interpolation and rotation routines for more
641       reasonable treatment of North Pole singularity: for tracers North Pole
642       value is set to northernmost zonal-mean value, for zonal velocity it is
643       set to zero, and for meridional velocity it is set to northernmost value.
644    o pkg/exf/exf_check_range.F
645     - add tile index to diagnostics and move stop statement to the very
646       end of the routine.
647    o pkg/diagnostics: (diagnostics_main_init.F)
648      define title of isomorphic variables according to the current config.
649    o pkg/thsice with pkg/seaice dynamics:
650    - fix domain of computation (interior only, required for exf) and do exchanges
651    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
652    o towards a standard way of dealing with multi-threading in MONITOR
653      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
654    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
655       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
656    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
657    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
658    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
659       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
660    o tracer advection:
661     - clean-up and simplify calc_common_factors.F
662     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
663       advection subroutine (but still not used within DST advection S/R)
664    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
665    
666    checkpoint58j_post
667    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
668      from file (collects calls previously in FORWARD_STEP)
669    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
670    o adjoint store dir. adjusted accordingly
671    o genmake2
672      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
673    
674    checkpoint58i_post
675    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
676      on wind stress (SEAICEstressFactor defaults to 1.)
677    o Total number of Timers is finite (<=40): comment out 2 non-essential one
678      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
679    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
680      on CS-grid: no longer loosing mass.
681    o exf & curvilinear-grid: no longer modify longitude xC & xG.
682    o pkg/ggl90: fix sloppy output and fix a bug
683    o pkg/seaice: added SEAICEuseEVPpickup parameter
684      - Set to false in order to start EVP solver with
685        non-EVP pickup files when using SEAICEuseEVP
686      - fix sign error in diffusion in seaice_calc_rhs
687    
688    checkpoint58h_post
689    * Modifications for bottom topography control
690      o replace hFacC by _hFacC at various places
691      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
692      o add non-self-adjoint cg2d_nsa
693      o update autodiff support routines
694      o re-initialise hfac after ctrl_depth_ini
695      o works for 5x5 box, doesnt work for global_ocean.90x40x15
696    * Adding verification for 5x5 box (4-layer) bottom topography control
697    
698    checkpoint58g_post
699    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
700       used for mean seasonal cycle, mean diurnal cycle); add an example
701       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
702    o pkg/ggl90:
703      - add parameter (minimum surface kinetic energy)
704      - fix bug (avoiding division by zero)
705    o couple pkg/thsice to pkg/seaice:
706      - modify advection in seaice to accomodate new scalar fields to be advected
707      - only muliDimAdection scheme work with seaice/thsice
708      - mapping of thsice-variables to seaice-variables, back and forth
709      - does not break the verification experiments, but does not give the
710        desired results either
711    o pkg/seaice
712      - make (default) second order advection a bit less confusing?
713    
714    checkpoint58f_post
715    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
716      to pkg/seaice):
717      - new routines thsice_map_exf and thsice_get_exf provide the interface
718      - add an additional formal parameter to thsice_solve4temp
719    o pkg/exf:
720      - add new fields wspeed, snowprecip (to be able to couple to thsice)
721      - correct Stefan-Boltzmann constant
722      - new parameter for longwave surface emittance
723      - separate some stuff from exf_bulkformulae into new routines  
724        exf_radiation, exf_wind
725      - add new parameters and constants: longwave emissivity for ocean, ice
726        and snow, evaporation parameters over ice
727      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
728        either wind from stress or stress from wind
729    o pkg/thSIce:
730    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
731    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
732       and THSICE_CALC_THICKN
733    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
734    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
735      to make debugging easier.
736    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
737    o pkg/bulk_force:
738      - clean-up comments and parameters ;
739      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
740    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
741      generate new output for test-experiment: aim.5l_cs.thSI
742    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
743      testreport accordingly
744    
745    checkpoint58e_post
746    o SEAICE_CGRID adjoint done
747    o R_STAR adjoint implemented.
748      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
749      * need to sort out init. of h0facc, etc.
750    o Make pkg/profile fully independent of ecco,cost, etc. stuff
751      to be able to use it in pure forward.
752    
753    checkpoint58d_post
754    o upgrade simple test-experiment to tutorial example:
755     step.1: duplicate the experiment and (step.2) will remove the old copy.
756      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
757      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
758      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
759      tutorial_global_oce_biogeo    <- copy of dic_example
760      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
761      tutorial_plume_on_slope       <- copy of plume_on_slope
762      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
763      tutorial_global_oce_optim     <- empty for now (David ?)
764      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
765     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
766    o correct a sign problem in cost_scat.F
767    o obcs and ptracers: fix boundary conditions for advections schemes
768      with larger stencil
769    o thsice adjoint: start
770    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
771      completeness
772    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
773      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
774    o ptracers adjoint:
775      * avoid extensive recomputatations
776      * fix missing re-init. of gptr (missed by TAF)
777    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
778      me to turn off the excessive output to STDOUT that this package produces
779    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
780      and add those terms in Vector-Invariant formulation.
781    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
782      if the control period (xx_hfluxperiod etc) is 0
783    o in profiles pkg, clean routines and fix details
784    o in ecco pkg, reading ssh data:
785      fix problem in case the model does not start at iter0=0
786    o fix mnc-pickup/restart for ptracers
787    o new package prifiles:
788      code to compute profile-based cost by Gael Forget
789      (modifs in ecco, ctrl, autodiff)
790    o Benign bug fix in initialization (spotted by M. Mazloff) of
791      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
792    
793    checkpoint58c_post
794    o adjoint: finish NLFS adjoint and provide reference output in
795      verification/global_ocean.90x40x15/results_ad_nlfs
796    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
797      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
798      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
799      with SEAICE_CGRID defined.
800    o move calendarDumps from "data" to "data.cal" and clean-up the code
801      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
802    o add useEXF & useCAL flags (for now, set in hard-coded way)
803    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
804      (were missing in NH mode, and wrong in quasihydrostatic mode).
805      waiting for Chris updated version of calc_gw to add those CALLs.
806    o fix bug in quasihydrostatic S/R ;
807      add a test for this option: global_ocean.90x40x15.qshyd
808    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
809      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
810    o add on/off flag useOffLine for package OFFLINE
811    o seaice:
812      - modify advection so that it works also on the C-grid
813      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
814        problem in multi-tile runs with C-grid
815      - add flags for clipping ice velocities and/or masking solver forcing
816      - fix drag (ocean on ice) formulation and a bug that caused noise in the
817        C-grid solver
818      - added a few comments to seaice_diffusion.F
819      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
820        are now exclusive)
821      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
822        required re-ordering the code a little:
823       + make DAIRN global variable (defined in SEAICE)
824       + move computation of the viscosities eta and zeta into a new separate
825         routine (because I need to recompute them in seaice_ocean_stress.F)
826    
827    checkpoint58b_post
828    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
829      update output.txt of exp. aim.5l_cs.thSI
830    o various mnc cleanups and improvements:
831      + shrink lookup tables by factor of ~4
832      + better error reporting when running out of lookup space
833      + able to handle longer path/file names (up to 500 chars)
834    o adjoint:
835      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
836      - TBD: "hidden" mom_vecinv recomp. in dynamics
837    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
838     (allow to differentiate between forcing components using new integer flags:
839      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
840     and add new flag to put Dissipation tendency out of Adams-Bashforth.
841    o ecco
842      - enable trend removal from SSH anomaly obs.
843    o adjoint
844      - a fix for PmEpR when #undef EXACT_CONSERV
845      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
846      - try to fix "hidden" recomp. in forward_step for NLFS
847        (NLFS seems broken sometimes after I checked it in)
848    o seaice:
849     - add c-grid version of the dynamic solver:
850       + three new routines that are the c-grid substitute lsr, dynsolver
851         and ostres
852       + put a few fields that were local to dynsolver into global common
853         blocks, so that I can move the computation of stresses etc into
854         seaice_lsr (saves coding but may break the adjoint).
855     - replace more hardwired parameters by runtime parameters
856     - add ice masks that mask the rhs of the implicit solvers where there
857       is no ice (commented out in seaice_dynsolver, because i am not sure
858       if this works properly), eventually this should replace the clipping
859       of ice velocities in seaice_dynsolver to +/-40cm/s.
860    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
861      include it only where its needed
862    o move balancing of fluxes before the call of external_forcing_surf
863    o seaice:
864      - correct units of turning angles (now they are really in degrees)
865      - move computation of GWATX/Y out of main routine into dynsolver
866      - initialize GWATX/Y in seaice_init
867    o Apply mask on Fresh-Water flux (needed for SSH forcing).
868      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
869    o seaice: add runtime flags for turning angles (default to zero)
870    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
871      and trend from exf forcing and ctrl control adjustments
872    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
873      (since checkpoint57x_post)
874    o change the default rotation period to 86164.s = the Earth rotation
875    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
876      and based on a reference stratification. Tested within hs94.cs-32x32x5.
877    o seaice advection: add code for choosing between the default (2nd order
878      central differences) and multiDim advection schemes provided by
879      pkg/generic_advdiff
880    o seaice:
881      - removed all references to SEAICE_GRID.h fields from
882        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
883        (cubed-sphere configuration will change a little)
884      - grid computations in seaice_init are obsolete now.
885      - cleaned up code a little so that is easier to read (hopefully).
886      - added new (better?) discretizations of default advection and diffusion
887        (turn on with SEAICEuseFluxForm)
888      - replace 1 in 3d global fields by kSurface in growth.F
889      
890    checkpoint58a_post
891    o seaice:
892      - bug fix in advect.F
893    o shelfice:
894      - separate shelfice load anomaly from pload (breaks with time
895        dependent forcing), => introduce constant field shelficeLoadAnomaly.
896        Its default is 0., but it may be computed more cleverly from (unknown)
897        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
898        done offline. A good approximation of the pressure load anomaly is
899        necessary to avoid large initial adjustment processes underneath
900        deep-reaching shelfice.
901      - small fix in ISOMIP shelfice_thermodynamics
902      - add more sophisticated thermodynamics of Hellmer (1989), this is
903        now the default
904      - give a few constants more intuitive names
905    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
906      if bulk formulae are used in long integration (especially EmPmR). Turn
907      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
908      if balancePrintMean, the imbalance that is substracted is printed to
909      STDOUT.
910    o fix bug (typo) in obcs_apply_eta.F
911    o add a new package shelfice which enables us to model the circulation
912      underneath shelf-ice with draughts of hundreds of meters.
913     - works
914     - to do: + include improved thermodynamics
915              + check whether kSurfC (from model/inc/SURFACE.h) can be used
916                instead of new field kTopC
917              + can we use topoFile, Ro_surf and existing code in ini_depth.F
918                instead of new field R_shelfIce and new code in ini_depth.F
919                and ini_mask_etc.F?
920              + adjust vertical mixing schemes?
921    o seaice pkg:
922     - add a cpp-flag to include a simple formula for a salinity dependent
923       freezing point of sea water at the surface
924     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
925       meridional stresses are now different (and hopefully correct)
926    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
927       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
928       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
929    o pkg/diagnostics: add options and parameters for regional-statistics
930       diagnostics ; define regions by reading a region-mask from a file
931       (might add other options later)
932    o pkg/bulk_force:
933     - add option and parameters to use AIM surface-flux formulae.
934     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
935       others forcing fields (defined in PARM05, parameter file "data") are loaded
936       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
937     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
938     - use the right EXCH call for uwind,vwind (to work on CS-grid).
939     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
940       and parameters (note: calcWindStress replaces .NOT.readwindstress).
941     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
942    
943    checkpoint58
944    o add "--embed-source" option to genmake2 which, when the supporting
945      tools can be compiled (as determined by genmake2) will turn on the
946      embed_files package which then embeds the entire MITgcm source code
947      (*.[fFhc] + Makefile) used for the build within the executable
948      - requested by CNH but off by default
949      - adds a paltry <9MB to the mitgcmuv executable in most cases
950      - only writes the output when useEMBEDSRC in eedata is true
951    o clean up 3-dim. relaxation codes:
952      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
953      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
954      * Thanks to Tom Haine for testing!
955    
956    checkpoint57z_post
957    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
958      affects output (@ truncation level) of exp. plume_on_slope ; updated.
959    o fix the pickup behavior for obcs in combination with ptracers
960    o fix a bug in ptracers_external_fields_load
961    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
962      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
963    o transfered surface NH pressure to eta field (if exactConserv).
964    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
965         and update lab_sea output.txt file.
966    o completing 3-dim. relaxation code: additional term
967         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
968      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
969      * At compile time, in "EXF_OPTIONS.h" set
970          #define  ALLOW_CLIMTEMP_RELAXATION
971          #define  ALLOW_CLIMSALT_RELAXATION
972      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
973          tauThetaClimRelax3Dim = 15552000.0,
974          tauSaltClimRelax3Dim  = 15552000.0,
975      * 3 cases:
976          1) Use a constant-in-time 3-dim. field
977          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
978          3) Real-time relax. to time-evolving prescribed field
979    o Adding Laplacian-type smoothness constraint on
980      initial and boundary (forcing) controls (ic, bc)
981      * enable at compile-time via
982        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
983      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
984      * Absolute scale somewhat unclear so far
985      * no area weighting was included since no other cost term does so far
986    
987    checkpoint57y_post
988    First step for a NLFS adjoint
989    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
990    o new init. routines for calc_r_star, calc_surf_dr
991    o still need to deal with ini_masks_etc
992    o testreport seemed happy
993    checkpoint57y_pre
994    
995    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
996    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
997    o add new offset feature to offline pkg (plus minor cleanup)
998    o cfc fixes for final year of integration
999    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1000      be in GCHEM_OPTIONS).
1001    
1002    checkpoint57x_post
1003    o fix testreport Pb in multiple test experiment.
1004    o cleanup our namelist syntax in verification:
1005      - make it more F95 standards compliant (some work still needed)
1006      - allows the vast majority of our tests to work with gfortran
1007    o Non-Hydrostatic:
1008     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1009     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1010    o Allow to apply AB on T,S rather than on AB(gT,gS):
1011     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1012     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1013       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1014     - need a "clever" read_pickup to restart from the other AB formulation
1015    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1016    o remove some unused variables (reduces number of compiler warnings)
1017    o adjoint
1018      * Disable useVariableViscosity for adjoint for time being
1019        (there are a number of extensive recomputations)
1020      * Initialize certain variables needed for adjoint
1021    
1022    checkpoint57w_post
1023    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1024                 fix the singleCpuIO RS version of MDSWRITEFIELD
1025       and add a WARNING if using globalFiles=T with multi-processors.
1026    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1027      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1028    o tracer advection scheme:
1029      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1030       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1031       was not very convenient).
1032      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1033       (further tests needed for the implicit DST & Flux-Limiter schemes).
1034    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1035      and sRef for convenience, handy, when you want to initialize
1036      ptracers in a large domain with a constant non-zero value. Also,
1037      untangle ptracers_init.F a little.
1038    
1039    checkpoint57v_post
1040    o change dome exp. to use variable viscosity in side-drag terms.
1041    o remove all the files from the cfc_offline test since they are now
1042      incorporated into tutorial_cfc_offline which has been producing
1043      identical results for a few days of testing
1044    o add new parameter: sideDragFactor to enable half-slip-side BC
1045      and change side-drag S/R to use viscosity from mom_calc_visc
1046      (can switch back by setting sideDragFactor=0.); affects results at
1047      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1048       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1049    o vorticity & strain are now computed without masking, to account for
1050      no-slip-side BC in variable viscosity calculation ; mask is applied
1051      anyway later on, before computing advection/coriolis terms.
1052    o modify exp4 to test new obcs support for reading from external files
1053      and for passive tracers
1054    o fix behavior of ptracers_monitor when monitor output is written to a
1055      netcdf-file; still not independent of monitor.F (writes in the same
1056      file).
1057    o change default value of tRef (put a uniform, meaningful value for ocean
1058      & atmos) and initialize sRef (was missing, as Martin mentioned).
1059    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1060      to be proportional to enstrophy dissipation length.  Thus,
1061       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1062      This is now consistent with Smagorinsky and with the manual.
1063    
1064    checkpoint57u_post
1065    o OBCS and PTRACERS: add open boundary support for passive tracers
1066      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1067        OB-values from file; this is not different from the way theta and salinity
1068        are treated
1069      - however, Orlanski-radiation conditions are not supported, and the model
1070        will stop if you use pTracers and Orlanski at the same time.
1071      - beefed up the rountine obcs_external_fields_load: now only those open
1072        boundary values are overwritten with values from files for which there
1073        are really files, otherwise the OB-fields remain untouched. This makes
1074        it possible to use different OBs at different ends of the domain (as
1075        with EXF)
1076    o reduce number of exch calls in shap_filt (s2).
1077    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1078      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1079    
1080    checkpoint57t_post
1081    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1082    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1083      same truncation, independent of the face number: affects affects several
1084      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1085    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1086      note that biharmonic viscosity + no-slip was not tested in any experiment.
1087    o fix bug in non-linear free-surf side-drag ; generate new output for
1088      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1089    o make mnc honor the writeBinaryPrec flag for most kinds of output
1090    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1091    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1092      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1093    o add brackets in multi-terms sum to get same truncation, independent of
1094      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1095      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1096    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1097      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1098      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1099      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1100      Suggested values of viscosity parameters found in mom_calc_visc.
1101      Many new viscosity diagnostics available.
1102    
1103    checkpoint57s_post
1104    o Add clearing-house for viscosity calculations, mom_calc_visc and
1105      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1106      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1107      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1108      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1109      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1110      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1111      ViscAhStrain and viscAhTension are now retired.
1112    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1113    o In response to JMC's bug report, genmake2 now ignores any soft-links
1114      that it finds in the *current* directory when searching for files.
1115      Soft-links found in any other source directories will still work as
1116      they did before.
1117    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1118      a C routine to unlimit the stack size
1119    o mnc-ify pkg/aim snapshot vars
1120    o mnc-ify pkg/land as requested by Daniel
1121    o various changes to mnc including:
1122      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1123      - output can now be grouped so that all files within a group
1124          change the ITER portion of their names in lock-step together
1125      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1126          and works with both EXCH1 and EXCH2 (but needs more testing)
1127      - writing works for all verification test cases w/ g77 on Linux
1128    
1129    checkpoint57r_post
1130    o make MNC variable initialization happen earlier
1131    o add diagnostics for (almost) each term of the momentum Eq.
1132    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1133    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1134    o remove MINIMAL_TAVE_OUTPUT option ;
1135      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1136    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1137      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1138    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1139    o add time-dependent SST, SSS control
1140    o cost terms in ecco/ modularized (new cost_generic.F)
1141    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1142    o new infrastructure for seaice model vs. obs misfits in seaice/
1143      * driver from the_main_loop.F is seaice_cost_driver.F
1144      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1145      * gradient check in Exp. 6a of natl_box_adjoint/
1146    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1147      (see README file)
1148    
1149    checkpoint57q_post
1150    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1151    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1152      - bug was reported by Jean-Michel and Ian Fenty
1153    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1154      update exp. cpl_aim+ocn output.
1155    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1156      Needed for high-res. runs with large global files
1157      to be able to limit tapelev size
1158    o Changed some tests for adjoint:
1159      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1160      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1161      * global_ocean.90x40x15/ back to default 3-level checkpointing
1162    o Modifications to enable scripted COMMON to MODULE conversion
1163      * verification/OpenAD/code/ has necessary scripts and description;
1164      * converts, compiles and runs successfully;
1165    
1166    checkpoint57p_post
1167    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1168    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1169      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1170    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1171    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1172      (was already the case for dissipation with mom_vecinv,
1173       and also the case for grad.PhiHyd when staggered-timeStep)
1174      This will allow to put dissipation out-off the AB time-stepping.
1175     Unfortunately, affects truncation error. Update output of exp. that "fails"
1176      (cg2d matching number) and leave the others for later: front_relax(10),
1177      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1178      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1179    
1180    checkpoint57o_post
1181    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1182      (2) its ready to be documented during the 20050801 DocFest
1183    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1184      for ideal_2D_oce and lab_sea on linux_ia32_g77
1185    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1186      in global1x1_tot/code_seaice_adj to access indices 32, 33
1187      (worth another tag)
1188    
1189    checkpoint57n_post
1190    o adding precip control xx_precip 32
1191    o adding swflux control xx_swflux 33
1192    o Replacing 10 forcing penalty cost routines by 1 generic.
1193    o Implementing partitioning in time-mean and variable adjustment
1194      for atmos. state.
1195    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1196    o in natl_box_adjoint:
1197      * updated exp 1 to 10
1198        (but does not have time-mean vs. variable split results yet)
1199    o updated global1x1/*_seaice_adj/
1200      to incorporate latest changes
1201    o enable useSingleCpuIO for mdsio vector routines
1202      (applies in particular to tapelev I/O)
1203    o removed inefficient K-loop in all active_file*control*.F
1204    
1205    checkpoint57m_post
1206    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1207      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1208    o pkg/exch2: filling of face-corner halo regions is optional
1209      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1210    
1211    checkpoint57l_post
1212     tag before updating tutorials (pre-release-2)
1213    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1214       for output and interpolation of input fields onto model grid)
1215    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1216       Affects results of exp. rotating_tank ; update output.txt.
1217    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1218          and taking the square quantity and/or using a fraction-weight field.
1219    o fix aim_diagnostics_init.F mate numbers.
1220    o add mnc output capability to diagnostics/diagstat and update
1221      our cvsignore files for the ACSII output generated
1222    
1223    checkpoint57k_post
1224    o lab_sea now uses diagnostics package and provides a suite of
1225      new EXF diagnostics output.
1226    
1227    checkpoint57j_post
1228    o exf
1229      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1230        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1231        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1232      * extended diagnostics output
1233        - now includes all EXF variables
1234        - hs, hl moved to common block
1235        - separate S/R for diagnostics, called after ctrl vector is added
1236        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1237        - EXFqnet contains true Qnet (i.e. includes qsw)
1238      * updated verif. lab_sea, global_with_exf
1239      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1240        to ensure that diagnostics sees a true EXFqnet
1241    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1242    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1243      several times with different frequencies.
1244    o mnc-ify the thsice package as requested by Daniel Enderton
1245      - the monitor--MNC output needs work
1246      - many attributes need to be added (most are currently blank)
1247    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1248      - many attributes need to be added (most are currently blank)
1249    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1250    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1251    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1252      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1253         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1254    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1255     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1256    
1257    checkpoint57i_post
1258    o Diagnostics package was changed: diagnostic allocation is now deactivated
1259      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1260    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1261      add 1rst Order upwind vertical Shear.
1262    o add a quick fix for A/B checkpointing in OFFLINE mode
1263    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1264      end-run around the C/Fortran linking horror in eesup/src/timers.F
1265    o added pkg/runclock: allows user to terminate run based on wall clock
1266    o added non-hydrostatic scaling parameter: nh_am2
1267    o pkg/my82: futile attempt to make results compiler-independent by adding
1268      some "_d 0", etc. no effect.
1269    o for mnc output, fill the 'T' coordinate var with myTime and create a
1270      separate 'iter' variable for iteration count
1271    o pkg/diagnostics:
1272      add new capability: output of Global/Regional & per-level statistics ;
1273      tested against monitor output (including land & thSIce) on various exp.
1274    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1275    
1276    checkpoint57h_done
1277      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1278      data.diagnostics, data.gchem, data.ptracers) is done.
1279    
1280    o pkg/diagnostics: prepare for Global/Regional statistics.
1281      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1282    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1283      and rename it: DIFFERENT_MULTIPLE
1284    
1285    checkpoint57h_post
1286    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1287    o pkg/diagnostics: change output frequency, now in seconds (instead
1288      of Nb of iterations). This requires to change data.diagnostics.
1289    checkpoint57h_pre
1290    
1291    o in mnc, let the user create the output dir if both mnc_outdir_date
1292      and mnc_outdir_num are false
1293    o add fflags() to pkg/diagnostics which allows one to specify, on a
1294      per-file basis, the file precision [default behavior is unchanged]
1295    o added diagnostics to pkg/kpp, including computation of mixed layer
1296      depth based on a temperature/density criterion
1297    o updated verification/natl_box to test the new pkg/kpp diagnostics
1298    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1299    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1300    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1301      not mnc -- this mistake was found by JMC and is now corrected
1302    
1303    checkpoint57g_post
1304    o add Adams-Bashforth 3rd Order time stepping:
1305      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1306      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1307    checkpoint57g_pre
1308    
1309    o make lambda[Theta,Salt]ClimRelax spatially varying
1310      (default remains spatially uniform constant based on tau)
1311    o added new control variables
1312      * init. uVel, vVel, etanN
1313      * lambda[Theta,Salt]ClimRelax
1314    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1315      (suggested by G. Forget)
1316    
1317    checkpoint57f_post
1318    o add parameter "baseTime" = model base time = time at iteration zero
1319      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1320      account for baseTime shift
1321    o move Coriolis arrays from PARAMS.h to GRID.h
1322    checkpoint57f_pre
1323    
1324    o mnc-ifying the seaice package
1325    o introduced an alternative length scale calculation for use in the limiting
1326      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1327    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1328    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1329      as well as grad(vort3).  Made it compatible with both approximate form
1330      for the cubed sphere and full form of these gradients.  Added flag
1331      useFullLeith to select between approximate and full form.  
1332    o add "d0" in getcon.F to reduce differences between compilers/platforms
1333      update output.txt of exp. fizhi-gridalt-hs
1334    o change port_rand funtion to allow to set the seed.
1335    o fix obscure MNC bug involving conversion between reals and integers
1336      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1337        new version is now more standards-compliant
1338    o adjoint-related modifications
1339      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1340      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1341      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1342    
1343    checkpoint57e_post
1344    o Adding eddy stress controls a la Ferreira et al.
1345    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1346    
1347    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1348      update output.txt of exp. fizhi-gridalt-hs
1349    o add more "Z" dimensions and associated coordinate vars to MNC
1350    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1351    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1352      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1353      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1354      months and years.  Requires pkg/cal.
1355    o diagnostics: add pickup functionality
1356      - off by default for backwards compatibility
1357      - current version only uses MDSIO -- MNC will be added
1358    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1359    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1360    
1361    checkpoint57d_post
1362    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1363    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1364      output from the diagnostics package
1365    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1366    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1367      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1368    o add coordinate variables to the MNC output from the diagnostics package
1369    o change MNC-flags default value: true when useMNC=TRUE
1370    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1371      the ability (off by default) to read the grid information using MNC
1372    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1373    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1374    o do snap-shot diagnostics at the middle of the time-interval (instead of
1375      at the end).
1376    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1377      new test for AIM with thSIce + slab-ocean
1378    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1379    o move state variable diagnostics to the beginning of the time step ;
1380      (note: still needs some work specially for snap-shot diagnostics)
1381      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1382    
1383    checkpoint57c_post
1384    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1385    o generate new output.txt files on faulks with g77 & the new -ieee option
1386    checkpoint57c_pre
1387    
1388    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1389      update output.txt of exp. global_ocean.90x40x15
1390    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1391      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1392    o add saltFlux(+File) forcing capability with periodicExternalForcing
1393    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1394    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1395    o improvements for the MNC output from DIAGNOSTICS:
1396      - correct handling of the unlimitied dimension
1397      - all dims now have associated coordinate variables
1398      - variables located at U, V, and Corner ("Z") points are now written
1399        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1400        *all* data points are output
1401    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1402    o added pkg/seaice/seaice_monitor.F
1403    o mdsio_readfield.F can now read files visible only to master MPI process.
1404    o pkg/seaice: some test code for ice-modified ocean stress
1405    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1406      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1407      spurious negative numbers for precipitation and humidity.  Will cause
1408      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1409    o pkg/ctrl/
1410      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1411        May be enabled via doPackDiag
1412      *  introduce z-scaling of
1413         + gradient (doZscalePack) and
1414         + control (doZscaleUnpack)
1415    o pkg/mdsio/
1416      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1417      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1418    
1419    checkpoint57b_post
1420    o simplify options in diagnostics_fill arguments (remove weird combinations)
1421    o fix MNC coordinate variables so that they now contain per-face index
1422      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1423      general, EXCH2 grids are only aligned to a "local" coordinate system
1424    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1425    o Implement instantaneous output within pkg diagnostics:
1426      setting a negative frequency in data.diagnostics produces
1427     "snap-shot" output (as opposed to time-average if freq > 0)
1428    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1429      NOTE: change ptracer diagnostics name: use 2 characters to work with
1430            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1431    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1432      becomes the coordinate variable for the 'T' dimension
1433    o add CF-style coordinate variables to MNC
1434      - just a first cut:  numbers are meaningless on the cubesphere and
1435        missing along the T axis but otherwise it works!
1436    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1437    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1438    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1439      this is based directly on what the model compute, so that the content of
1440      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1441    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1442    o clean up build options files for SunOS, in particular
1443      - remove -traditional from xmakedepend
1444      - change -xarch=v9 to -xarch=native for f77
1445      - restore use of make (not gmake)
1446      - add CC=gcc if using g77
1447    o changes per discussion of AM, JMC, & EH3 today:
1448      - move redundant "grid" variables out of "state" -- in preparation of
1449        creating proper CF-style coordinate variables and in recognition
1450        that any/all grid variables can be easily copied (eg. w/NCO) from
1451        the grid files into any of the other NetCDF files
1452      - *always* output grid variables with MDSIO (this will eventually be
1453        changed)
1454      - output MNC grid file if useMNC is true
1455    o every instance of _END_MASTER() has been found and replaced with
1456      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1457      preprocessors
1458    o re-arrange diagnostics pkg initialisation:
1459     - allow each package to extend the available diagnostics list
1460     - add some checking and fix small problems (multi-threaded, ...)
1461     - new S/R diagnostics_fill (replace fill_diagnostics):
1462       look through the short list of active diag. (instead of the long list)
1463       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1464    
1465    checkpoint57a_post
1466    o this set of changes restores TAMC compatibility
1467      tested for global_ocean.90x40x15 adjoint on trough
1468      (what a pain)
1469    
1470    checkpoint57a_pre
1471    o some modifs in tools/build_options for sunos
1472    o call ctrl_pack for ctrl at end for optimcycle=0
1473    
1474    checkpoint57
1475    o add horizontal bi-harmonic viscosity for vertical velocity
1476      - new parameter viscA4W (defaults to viscA4)
1477      - affects only non-hydrostatic code
1478      - to be done: no-slip lateral boundary conditions
1479    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1480    o implement Implicit Vertical advection for pTracers
1481    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1482      (implemented also for implicit vertical diffusion & advection)
1483    o OBCS: extend application of tracer open boundary conditions
1484      to a strip beyond the boundary of width Olx/Oly
1485    o add call monitor to TAF set of required calls (flow directives)
1486      and include in natl_box_adjoint
1487    o untangle a few ifdefs related to cost, ctrl, autodiff
1488      untangel a few ALLOW_ECCO_OPTIMIZATION
1489    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1490      (theta2, salt2 in ecco_cost_weights)
1491    
1492    checkpoint56c_post
1493    o OBCS as control variables
1494      - update ctrl_ad_diff.list, obcs_ad_diff.list
1495      - remove balance of obcs controls from default
1496      - fix index bug nobcs in ctrl_init
1497      - fix dummy fields filen in ctrl_pack
1498      - add dummy weights for obcs
1499    o lsopt: comment out fort.94 output
1500    o optim:
1501      - remove unnecessary header files
1502      - adjusted namelists
1503      - add xerbla.F to Makefile
1504    o exf:
1505      - multiple modifications of exf_check_range
1506      - unit change in exf_init_runoff from [m/year] to [m/s]
1507    o mdsio:
1508      - i/o-vector change debugLevel from debLevA to debLevB
1509    
1510    checkpoint56b_post
1511    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1512      is called from DO_THE_MODEL_IO
1513      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1514      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1515      - clean up PTRACERS_WRITE_TIMEAVE a little
1516    o add another verification experiment that tests both the cfc-pkg and
1517      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1518      reactive tendencies treated inline with regular timestepping
1519    o testreport previously did a lousy job of comparing small numbers, so
1520      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1521      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1522      testreport.
1523    o ptracers_monitor: bug fix for MPI
1524    
1525    checkpoint56a_post
1526    o GCHEM: finish reorganizating the package
1527      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1528        (introduces another 3D-array for each passive tracer, but only if
1529        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1530        gchemTendency is not needed because the timestep is done separately)
1531      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1532      - GCHEM is now---more or less cleanly---separate from PTRACERS
1533      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1534        so clear to me how that should be done in a general way.
1535    o CFC: improve formatting of output in CFC_ATMOS
1536    o PTRACERS:
1537      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1538        that ALL experiments with ptracers enable can be checked. This makes
1539        GCHEM_MONITOR obsolete.
1540      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1541        monitorFreq
1542      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1543    o add PTRACERS (PTR0[1-5]) to testreport output
1544    o exf_check_range:
1545      * default changed to .TRUE.
1546      * will check values for niter0 if debLevA, every timestep if debLevB
1547      * STOP in exf_check_range if 'out of range'
1548      * range chosen generous to allow for potential extema
1549      TBD: a version with stricter range
1550           permitted range would be runtime parameters
1551    o GMredi:
1552      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1553      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1554      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1555    o GCHEM:
1556      - move call to GCHEM_FORCING_SEP, so that it is now called before
1557        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1558      - introduced a useGCHEM runtime flag and applied it everywhere.
1559      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1560        this flag is now only visible within GCHEM-pkg routines.
1561      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1562        be replaced by a 3D array that is computed before thermodynamics; for
1563        this, the tracer ID iTracer had to be included into the parameter list
1564        of ptracers_forcing
1565      - set up forward_step to call gchem_forcing, that will replace
1566        gchem_forcing_int in ptracers_forcing
1567      - cleaning up
1568    o small cleaning of exch2: remove files that are also in eesupp/src
1569    
1570    checkpoint56
1571    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1572    o mnc: cleanup "full" files--fixes out-of-memory problem
1573    o ECCO-GODAE
1574      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1575      * fully merged and updated from SIO code
1576        windstress sign change affects
1577        - exf_inscal_[u/v]stress
1578        - sign of xx_tau[u/v] adjustments
1579        - signs in cost_scat
1580      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1581      * natl_box_adjoint updated and compressed
1582      * 2-level checkpoint switch added
1583        (tested in EXP. 1 of natl_box_adjoint)
1584      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1585    o SVD
1586      * first complete, non-hacked version for SVD calculations
1587      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1588        performed via direct access files admtlm_vector.it????
1589        (via ctrl_[un]pack)
1590      * optimcycle is used for ARPACK iteration counter
1591        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1592      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1593        and add linear transforms where necessary
1594      * controls are initial/final SST, SSS (can be extended; need to check
1595        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1596    o mdsio: filename info to both stderr, stdout
1597    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1598      from sign change
1599    
1600    checkpoint55j_post
1601    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1602      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1603    o add consistent build directories and .cvsignore files to verification
1604    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1605    o make all subroutines 30 or less characters in length for certain older
1606      compilers to work (a thorough search only turns up two routines in
1607      pkg/ptracers)
1608    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1609      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1610    
1611    checkpoint55i_post
1612    o change arrays for total vertical diffusivity (2.D if explicit,
1613      3.D if implicit) ; each ptracer uses its own background value.
1614    o added mnc/NetCDF output capability to ocn_compon_interf
1615      - added bits to verification/cpl_aim+ocn so that it can run on
1616        ITRDA and other clusters without the mpirun "-wd" option
1617    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1618      configuration
1619    o give MNC the ability to create additional files rather than
1620      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1621      - the default is just less than 2GB which is a practical limit
1622        on many systems
1623    o Compute the non-local term using either KPP vertical diffusivity (=default)
1624       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1625    
1626    checkpoint55h_post
1627    o add verification test "vermix"
1628    o remove all the *_ioinc flags and replace with the single global
1629      outputTypesInclusive flag
1630    o allow to set a vertical profile of vertical diffusivity for T & S
1631    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1632    o useMNC moved from data.mnc to data.pkg
1633    
1634    checkpoint55g_post
1635    o Renaming carbon AD experiments to comply with testreport conventions
1636    o Updating adjoint of Held-Suarez hs94.1x64x5
1637    o Fixing directives for non-ECCO forward_step, after ECCO directives
1638      have been fixed to avoid recomp. of do_oceanic_phys
1639      Works well for global_ocean.90x40x15,
1640      but recomp. issue remains for carbon
1641    o Updating adjoint output for natl_box_adjoint after
1642      pkg/ecco has been modified (see taga c55d_post)
1643    
1644    checkpoint55f_post
1645    o rename to timeave_init_fixed
1646    
1647    checkpoint55e_post
1648    o some delicate re-shuffle of store directives to avoid one
1649      extra call of do_oceanic_physics
1650      affects ecco_the_main_loop.F, do_oceanic_physics.F
1651      checkpoint_lev1_directives.h
1652    o NB: this may break global_ocean adjoint temporarily,
1653      but it is clear how to fix it. Will do later, need this now.
1654    
1655    checkpoint55d_post
1656    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1657    o ecco_cost_weights is modified to 1x1 runs
1658    o modifs to allow observations to be read in as
1659      single file or yearly files
1660    o enable to read exf forcing fields as either
1661      single file or yearly files (flag useExfYearlyFields)
1662    checkpoint55d_pre
1663    
1664    o switch between 2-level and 3-level checkpointing
1665    o add ability of MNC to write local and "partial" (eg. 2D slices where
1666      the full 3D field is never actually stored) arrays to NetCDF files
1667      with the correct (that is, the complete multi-dimensional) set of
1668      array indicies
1669      - used in mom_vecinv() to write the diagFreq output
1670      - tested (demonstrated) in verification/aim.5l_cs
1671    o further mnc-ification
1672      - add verification/lab_sea to the list with mnc setups
1673      - fix undefined mnc v-names in cd_code
1674      - add kpp to mnc output (both snapshot and timeave)
1675    o non-hydrostatic code
1676      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1677        in calc_gw.F
1678      - defaults to viscAh
1679      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1680        friction or Leith) in non-hydrostatic mode, as long as there is
1681        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1682    o pkg/cost
1683      extend simple cost functions to treat time mean quantities
1684      (T,U,V) via cost_accumulate_state from cost_tile
1685    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1686        be 2 times larger than the minimum size the advection scheme requires.
1687        now get a perfect conservation of salt in advect_cs test-exp (updated)
1688    o GGL90 (Gaspar's TKE mixed layer)
1689      - add horizontal diffusion of TKE, requires exchanges in
1690        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1691        default. In OPA there is no horizontal diffusion of TKE but the
1692        mixing coefficients are computed from a horizontal average of TKE of
1693        6 points or so. I think that diffusion has a little more physical
1694        justification.
1695      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1696        was in vain)
1697      - mask tke-variable in ggl90_init
1698    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1699    o fix biharmonic diffusion on CS-grid.
1700    o more obcs stuff
1701      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1702        for reading boundary values. This routine is called from
1703        obcs_prescribe_read
1704      - updated obcs_check
1705      - changed sponge layer relaxation parameter units for days to seconds
1706      - turned off sponge layer by default
1707      - changed argument list of OBCS_CALC to myTime+deltaTclock
1708      - fixed about 35 bugs in obcs_external_fields_load
1709    
1710    checkpoint55c_post
1711    o obcs stuff
1712      - new runtime flags useOBCSprescribe, useOBCSbalance
1713      - re-arranged obcs_calc
1714      - moved exf_getobcs to obcs_prescibe_read
1715        obcs_prescibe_read is called after ORLANSKI stuff
1716        and independent of it (executable can contain all).
1717      - updated obcs_check
1718      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1719        These may be necessary only if tangential velocities are
1720        prescribed at OB, not sure, needs testing.
1721    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1722      which simplifies the calls and passes the ifc check-bounds test
1723    
1724    checkpoint55b_post
1725    o add a 2D scalar, Z location, exchange_2 routine.
1726    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1727      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1728      affects advect_cs results (for the wrong reason): update output.txt
1729    o use a more standard discretization for biharmonic viscosity ;
1730     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1731      affects results of dome set-up: update output.txt
1732    o fix gad_advection.F (CubedSphere part), back to version 1.23
1733    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1734    
1735    checkpoint55a_post
1736    o merged code to
1737      * prescribe/read time-dependent open boundaries
1738        (works in conjunction with exf, cal)
1739      * sponge layer code for open boundaries
1740      * each boundary N/S/E/W now has its own CPP option
1741        (healthy for the adjoint)
1742    
1743    checkpoint55
1744    o up-to-date adjoint of previous breaks
1745      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1746      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1747      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1748      - carbon: * remove tr1-related adjoint verification
1749                * add ptracer as control variable
1750    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1751      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1752    
1753    checkpoint54f_post
1754    o in verification/carbin/ remove experiment related to
1755      ALLOW_PASSIVE_TRACER (array tr1 etc)
1756      code_ad/ input_ad/ results_ad
1757    
1758    o add two new packages
1759      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1760        + subject to optimization (memory)
1761      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1762        + subject to reordering (many GOTOs in the original code)
1763        + so far opps is called for every (i,j) point, and then operates in
1764          the vertical; one may want to reorder the scheme in order operate in
1765          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1766          fields)
1767    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1768      - all verification tests compile and run with linux_ia32_g77
1769      - defaults are compatible with current input files--nothing
1770        should change if you were not previously using MNC
1771      - MNC output has been added in numerous places (eg. timeave)
1772        but there are still a few writes not yet do-able with MNC
1773        (this is in progress)
1774      - flags now allow for either/or/both use of MDSIO and MNC and
1775        documentation will soon follow
1776      - numerous small formatting cleanups for ProTeX
1777    o add version info (via BUILD_INFO.h) to MNC and stdout
1778    
1779    checkpoint54e_post
1780    o add two new packages
1781      - pp81 (Packanowski and Philander, 1981), Richardson number and
1782        stratification dependent mixing
1783      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1784      - these scheme operate in a similar manner as KPP (without ghat, of
1785        course), however there is only one diffusivity that is used for both
1786        temperature and salinity (and passive tracers)ç
1787    o add offline package
1788    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1789      provided by Stephanie Dutkiewicz
1790    o genmake2: add ability to search for C compilers and cleanup test output
1791      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1792    
1793    checkpoint54d_post
1794    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1795    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1796      leading to additional shift by 5 days each year of integration
1797       (i.e. leading to considerable offset over the years)
1798    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1799    o start with no AB and no initial filtering (staggerTimeStep):
1800      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1801    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1802      (external loading & cpl import/export stay in forward_step.F)
1803    o update coupling interface to work with new staggerTimeStep
1804    o change MDSIO ptracers_pickup.
1805    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1806    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1807    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1808    
1809    checkpoint54c_post
1810    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1811      this affects (truncation error) output.txt of test-exp:
1812       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1813    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1814    o change Qnet to always be the net heat flux, (+upward).
1815      affects (truncation error) output of natl_box exp.: updated
1816    o define the max number of passive tracers in PTRACERS_SIZE.h
1817    o start to test mnc routinely in exp0
1818    o add sea-ice loading (sIceLoad) as a new forcing field.
1819    
1820    checkpoint54b_post
1821    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1822       impressive on Altix and Opteron systems)
1823    o diagnostics can now write NetCDF files through the mnc package
1824    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1825    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1826    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1827      affects (truncation error) output of lab_sea & natl_box exp.: updated
1828    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1829    
1830    checkpoint54a_post
1831    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1832    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1833    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1834    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1835      + internal_wave (shift in writing cg2d_ini_res)
1836    checkpoint54a_pre
1837    
1838    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1839      - modified verification/lab_sea and natl_box_adjoint accordingly
1840    
1841    checkpoint54
1842    checkpoint53g_post
1843    o prepare splitting of thermodynamics: store convect.counter in common block
1844    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1845      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1846    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1847    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1848    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1849    o restore adjointability
1850    
1851    checkpoint53f_post
1852    o modifications that affect AIM experiment results (update output.txt):
1853      - no advection of S at top interface Nr (pkg/generic_advdiff)
1854      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1855    o AIM pkg:
1856      - include stability function into surf.Flux derivative relative to Tsurf
1857      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1858    
1859    checkpoint53e_post
1860    o merged cylindrical coord configuration
1861    o added rotating_tank experiment
1862    checkpoint53e_pre
1863    
1864    checkpoint53d_post
1865    o faulks upgraded: re-generate output.txt that have changed:
1866       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1867    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1868    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1869    o added Sadourny discretization of Coriolis
1870      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1871      - re-enabled use of omega3 (useAbsVorticity)
1872    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1873      vector-invariant equations
1874      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1875    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1876      hopefully without new bugs
1877      - still to do: biharmonic friction for non-hydrostatic w
1878    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1879    o regenerated output for global_ocean_ebm (using -ieee)
1880    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1881      of mom_common/
1882      - simple re-arrangement of instructions within computing loop
1883    checkpoint53d_pre
1884    
1885    checkpoint53c_post
1886    o new version of coupler for AIM+thSIce and Ocean models
1887     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1888     - land: change Evaporation of snow
1889     - aim with thSIce: fix bug in snow-precip.
1890    o changes to calc_gw.F
1891     - bug fix for w^2 term near the bottom boundary
1892     - (hopefully) improve the lateral slip boundary condtions for use with
1893        partial/looped cells
1894      - because the bug fix changes two verification experiments anyway (exp5
1895        and plume on slope), change the lateral boundary condition from half slip
1896        to the value of no_slip_sides
1897    o ebm package wasnt quite up to the parallel task. Fixed that.
1898    o Adjoint of EBM package + verification
1899      * TLM OK
1900      * ADM not sufficient accuracy yet (needs further testing)
1901    
1902    checkpoint53b_post
1903    o Commiting new energy balance model to repository
1904      * package is pkg/ebm
1905      * verif. is verification/global_ocean_ebm
1906      * references are in ebm_driver.F
1907    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1908    C        Global thermohaline circulation. Part I:
1909    C        Sensitivity to atmospheric moisture transport.
1910    C        J. Climate 12(1), 71-82
1911    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1912    C        Global thermohaline circulation. Part II:
1913    C        Sensitivity with interactive transport.
1914    C        J. Climate 12(1), 83-91
1915    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1916    C        Destabilization of the thermohaline circulation
1917    C        by atmospheric eddy transports.
1918    C        J. Climate 7(12), 1870-1882
1919    o Will need long integration testing.
1920    checkpoint53b_pre
1921    
1922    o created pkg/mom_common in preparation for variable viscosity code
1923    o renamed and split ini_mnc_io
1924    o pkg/land: only liquid water can diffuse or run-off
1925    o AIM using land: soil wetness availability account for snow
1926    o added printMapIncludesZeros to EEPARMS namelist
1927    
1928    checkpoint53a_post
1929    o restore TAMC compatiility for exf_constants.h
1930      (no usage of _d in .h)
1931    o Additional storing in KPP in an attempt to fix
1932      TAMC problem with adjoint of KPP code.
1933      (no success...)
1934      Identical code works fine with TAF.
1935    o Fixed verification/natl_box_adjoint experiments.
1936      Initial conditions for Experiments 4 and 5 are now
1937      set to "SEAICE_initialHEFF=0", which is more reasonable,
1938      and hence gives results closer to that of Experiment 2.
1939      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1940    
1941    checkpoint53
1942    o stable checkpoint with up to date adjoint
1943      TLM tests only run for 1st grdchk at the moment. Its unclear if
1944      this is a code problem or a problem with resetting code for g_
1945      variables that is being autogenerated wrong.
1946      Otherwise:
1947       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1948       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1949         are both still in chaos following their security messes.
1950    
1951    checkpoint52n_post
1952    o various build (mostly genmake2) changes including:
1953      - ability to build/run more easily within Cygwin and MacOS X
1954      - more complicated Makefiles with a stronger dependence on Gnu Make
1955    o pkg/seaice modifications
1956      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1957        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1958        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1959      - changed proxy for geostrophic velocity and updated
1960        verification/lab_sea/results/* accordingly
1961      - removed ADI dynamic solver from pkg/seaice
1962      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1963        they caused a segmentation fault under certain circumstances
1964      - removed unused field WATR
1965    o bug fix in exf-package:
1966      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1967         now reflect that.
1968    o small fixes in the cal-package:
1969      - set reference date to first of January for the 'model'-calendar
1970      - failing of cal_CheckDate in cal_FullDate now actually results in a
1971        warning
1972    o small modifications in exf-package to increase flexibility:
1973      - change climtempfreeze from a constant to a runtime parameter that
1974        is specified in data.exf_clim (default = -1.9)
1975      - introduce runtime parameter windstressmax (default = 2.0) that is
1976        specified in data.exf
1977    o fix in pkg/thsice:
1978      - update Evap (Tsf changes) to be consistent with Latent heat flux
1979      - maintain snow precipitation unchanged (even if Tsf >=0).
1980     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1981    
1982    checkpoint52m_post
1983    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1984      this does not change any of the results, because myIter=0 in swfrac always
1985      lead to jwtype=2 (the default anyway), but the call makes little sense
1986      as a default
1987    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1988    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1989      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1990    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1991    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1992    o extending useSingleCpuIO option to work with new exch2 I/O format
1993      - old-style, missing-tile I/O is still accessible by defining CPP
1994        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1995    o monitor package can write to NetCDF files and/or STDOUT
1996    o fix re-definition bug in MNC_GRID_INIT_ALL()
1997    o doc/api_reference added
1998      - a framework for building an API Reference Manual using all
1999        the "protex" comments embedded in the code
2000      - see pkg/generic_advdiff, pkg/mnc for examples
2001    o MNC:
2002      - make myThid the last argument for all subroutines
2003      - new default for the grid files: NO halos
2004      - add useMNC and other run-time flags
2005      - separate per-file-group handling of the unlimited dimension
2006      - early initialization of MNC w/ flags read at the eeboot stage
2007        and lookup tables set in initialize_fixed
2008      - write all MNC output to a freshly-created directory
2009    o thermodynamics sea-ice (thsice) is now tested with testreport.
2010    o test exp. advect_cs: use the standard cs32 grid ; update output.
2011    o Added functionality to grdchk:
2012      pick global i,j,k position (or nearest wet) where to perform check.
2013    
2014    checkpoint52l_post
2015    o new land formulation:
2016      a) use ground enthalpy as prognostic variable to ensure exact
2017         energy conservation.
2018      b) account for water temperature and for latent heat of freezing
2019         in all processes (rain, run-off, ground storage)
2020      c) compute surface and ground temperature implicitly.
2021    o aim_v23 modification for new land model:
2022      a) Treat separately land / ocean / sea-ice surface fluxes
2023         to allow implicit computation of land & sea-ice surface temp.
2024      b) add snow precipitation.
2025    checkpoint52l_pre
2026    
2027    o fix problem (when 1 tile is empty) in min/max monitor.
2028    o fix bug in timeAve (u,vZetatave in common block)
2029    o no restoring terms under ice for pkg/seaice
2030    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2031    o bug fix for pkg/seaice pickups
2032    o change MNC call locations and add coordinate attributes
2033    o mask vorticity at the corner ; affects global_ocean.cs output
2034    o fix ini_curvilinear_grid ; test CS experiments with mpi
2035    o aim.5l_cs: modify sea-ice fraction input file ; update output
2036    o exf: Adding simple range check routine for exf fields after read
2037    
2038    checkpoint52k_post
2039    o removed top-level directory "diags"
2040      - we migrated these functions to pkg/timeave a long time ago
2041    o fixed bug introduced in pkg/monitor
2042    o accuracy ctrlprec = 32 insuffient for gradient checks using
2043      averaged fields (I/O via cost_averages)
2044      -> use ctrl.h in active_file*.F to control I/O precision.
2045    o paramter list of CALL ADTHE_MAIN_LOOP
2046    o added initial do_the_model_io to ecco
2047    o set all ...Freq to zero after cost_final
2048      taveFreq, dumpFreq, pChkptFreq
2049    o MAIN and ECCO differentiability restored
2050    
2051    checkpoint52j_post
2052    o fix nchklev in tamc.h for global_ocean...
2053    o Bringing flow and store directives up-to-date
2054    o Really weird thing!
2055      call do_the_model_io from the_main_loop with parameters
2056      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2057      TAF places a faulty re-call of initialise_varia
2058      after cost_final call which should not be there!
2059    checkpoint52j_pre
2060    
2061    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2062      error messages
2063    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2064    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2065      debug output
2066    o modfied mdsio_writefield.F to handle non-global files under exch2
2067    o update AIM Cubed-Sphere exp (aim.5l_cs):
2068      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2069    o update AIM Equatorial Channel exp:
2070      use standard aim_v23 pkg and change the SST fields to be more realistic.
2071    o globalFile now works with exch2
2072    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2073      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2074    o limit timeave output for hi-res integrations
2075    
2076    checkpoint52i_post
2077    o removed CPP_EEOPTIONS.h from verification/*/code
2078    o updated the tiling for global_ocean_pressure
2079    checkpoint52i_pre
2080    
2081    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2082      the old pkg/aim).
2083    
2084    checkpoint52h_pre
2085    o shortened offending lines in exch2_send_rx?.template
2086    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2087    o genmake2: add build & execute test for NetCDF code
2088    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2089      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2090    o added useSingleCPUIO flag to monitor.F and mon_out.F
2091    o added temporary hack for sea-ice dynamics on the cube:
2092      metric terms are ignored and it is assumed that
2093      there is no sea-ice on cube faces 1, 2, 4, and 5.
2094    
2095    checkpoint52f_post
2096    o added exch2 cube routines to pkg/exch2
2097    o modified hs94.cs-32x32x5 to use it
2098    o added new grid files to hs94.cs-32x32x5
2099    checkpoint52f_pre
2100    
2101    checkpoint52e_post
2102    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2103      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2104    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2105      to work with implicit vertical advection and AB ;
2106    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2107    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2108     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2109    checkpoint52e_pre
2110    
2111    o fix bug in impldiff when Nr=1 or Nr=2.
2112    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2113    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2114    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2115      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2116    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2117    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2118    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2119    
2120    checkpoint52d_post
2121    o re-tiled many expts to allow comparison in multi-processor mode
2122      - updated output accordingly
2123      - changed hs94.128x64x5 to use intial T from file rather than use the
2124        random number generator
2125    o add infrastructure in model routines for fizhi and gridalt packages
2126    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2127    o changes to permit hi-res, cubed-sphere, configuration
2128      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2129      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2130      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2131        of surface winds for the cube
2132      (A verification experiment, based on global_ocean.cs32x15, but with
2133       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2134       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2135       complete with example surface forcing files and matlab scripts to look
2136       at the output and compare it with that of global_ocean.cs32x15.)
2137    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2138       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2139       to conform to the common rule.
2140    o check-in the first version of the coupler + interfaces for multi-components
2141       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2142       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2143       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2144       - ocean and atmos. share the same horizontal grid (no interpolation).
2145       - exchanges between component and coupler is done in forward_step
2146    o new verification experiment, cpl_aim+ocn:
2147       coupled ocean - AIM atmosphere on cs32 grid.
2148    
2149    checkpoint52d_pre
2150    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2151    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2152    
2153    checkpoint52c_post
2154    o Fixing OPTIONS files for use of exf:
2155      - ALLOW_ECCO not needed
2156      - ECCO_CPPOPTIONS.h should not be included from
2157        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2158        as has been the case in the past
2159      - All cal/exf related options are currently set in
2160        single header file. Should remain so until we
2161        agree on a consistent new policy.
2162    o Removed all CPP options for cal package.
2163      cal has no more CPP options.
2164    o modified STOREs in GAD_ADVECTION
2165    o corrected key comp. for passkey
2166    
2167    checkpoint52b_post
2168    o new version: "thsice" of thermodynamic sea-ice pkg:
2169     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2170     - modify fluxes but do not change theta directly;
2171     - light cleaning of bulk_force pkg (still needed with thsice).
2172     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2173       + output_thsice.txt to test thsice & bulk_force pkgs.
2174    o put back grid & coriolis monitor output.
2175    checkpoint52b_pre
2176    
2177    o call "do_the_model_io" at the beginning (=> dump initial state)
2178    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2179    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2180      (need info on NUMBER_OF_PTRACERS)
2181    o missing PTRACERS headers in some routines
2182    o default tamc.h in pkg/autodiff supposed to crash
2183      to ensure proper customization
2184    
2185    checkpoint52a_post
2186    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2187      - moved surfaceTendencyTice from pkg/seaice to main code
2188      - subroutine FREEZE_SURFACE now limits only surface temperature
2189        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2190        => new output.txt for global_ocean.cs32x15 & global_with_exf
2191      - keep the old version of FREEZE for backward compatibility;
2192        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2193      - corresponding modifs for TAF directives
2194    o added surface flux output variables to TIMEAVE_STATVARS
2195    o time-averaged output for pkg/ptracers
2196    o fix problem with ECCO-related divided adjoint
2197      snapshot file was missing some ad-variables,
2198      but no warning issued by TAF
2199    
2200    checkpoint52a_pre
2201    o some bug fixes for #undef REAL4_IS_SLOW
2202    
2203    checkpoint52 = ecco_c52_e35
2204    o after testing adjoints of checkpoint51u_post
2205    
2206    checkpoint51u_post
2207    o this is the post-merge tag of the ecco-branch
2208      (needs another clean checkout and re-testing)
2209    o various natl_box_adjoint configs and results
2210      but no input fields
2211    o obcs adjoint not yet merged!
2212    o adding ECCO global 1x1 and 2x2 degree configs
2213    o updated/extended some store directives for seaice
2214    o pkg/ecco now containes ecco-specific part of cost function
2215    o top level routines the_main_loop, forward_step
2216      supersede those in model/src/
2217      previous input data.cost now in data.ecco
2218      (new namelist ecco_cost_nml)
2219    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2220    
2221    checkpoint51t_post
2222    o this is the pre-merge tag of the ecco-branch
2223    
2224    checkpoint51s_post
2225    o cleanup: removed various obsolete #define-s
2226    o pkg/grdchk
2227      - renamed 'ph-grd 3' to 'grad-res'
2228      - merged from ecco-branch
2229        (remaining bug fixes for obcs gradient checks)
2230      - additional high-precision output for testreport
2231        (grep for 'precision_grdchk_result')
2232    
2233    checkpoint51r_post
2234    o cleaned up or removed CPP_OPTIONS.h files
2235    o updated results for some of the tests to reflect the new
2236      optfiles (-ieee: -O0 instead of -O3)
2237    
2238    checkpoint51q_post
2239    o cd_code:
2240      - moved cd_scheme.F -> cd_code_scheme.F
2241      - separate read_checkpoint from cd_code_ini_vars.F
2242      - separated cd_code part from write_checkpoint
2243      - updated AD_SOURCE, generated .flow
2244      - added CD_CODE_VARS.h to the_main_loop
2245      - Moving cd_code specific store dir.s to pkg/cd_code
2246    o ctrl package totally restructured
2247      - pack/unpack now optional and decoupled from
2248        xx_/adxx_ I/O
2249      - ctrl_pack/unpack cleaned
2250        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2251      - confined inclusion of AD_CONFIG.h to where necessary.
2252    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2253    
2254    checkpoint51p_post
2255    o create initial cd_code package
2256      - WARNING: the initialization of fields within packages
2257        is broken because INI_FIELDS (where READ_CHECKPOINT is
2258        called) is called *before* PACKAGES_INIT_VARIABLES.
2259        This seems to be backwards since
2260        1) its important to initially zero the entire field including
2261           the "halo" region
2262        2) zeroing needs to be done *before* reading pickup info
2263           and the pickup call might or might not happen in any
2264           particular run
2265      - this needs an overhaul for R2
2266    o cleanup verification/*/code/GMREDI_OPTIONS.h
2267    o cleanup testreport
2268    
2269    checkpoint51o_post
2270    o bringing AD-related verif's up to date with genmake2
2271      - carbon/
2272      - global_ocean.90x40x15/
2273      - hs.94.1x64x5/
2274      - (front_relax/ )
2275    o (more) consistent directory structure for AD-related verif.'s
2276    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2277    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2278    o bug fix in find_alpha.F for MDJWF:
2279      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2280        change rho -> rho-rhoConst
2281      - replace call find_rho to find_rhonum
2282    o initialisation of rFlx extended to full array (required by TAF)
2283      and shifted to thermodynamics
2284    o removed PTRACERS.h in ptracers routine
2285    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2286    o Correcting initialisations for fVerU, fVerV.
2287    o helping TAF to recognize dependency on kUp for
2288      fVerU, fVerV
2289    o Replacing delZ by delR in pkg/ctrl/
2290    checkpoint51o_pre
2291    
2292    o undid all of cp51 pending some cleanups and discussion
2293    o added the [#include "AD_CONFIG.h"] statement to all files that need
2294       it for adjoint/tl #defines
2295     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2296     o removed tools/genmake since it no longer works
2297    
2298    checkpoint51n_post
2299    o modifications to make FREEZE flux visible to pkg/kpp
2300      - moved surfaceTendencyTice from pkg/seaice to main code
2301      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2302      - subroutine FREEZE now limits only surface temperature
2303        (this means new output.txt for global_ocean.90x40x15,
2304         global_ocean.cs32x15, and global_with_exf)
2305    o added surface flux output variables to TIMEAVE_STATVARS
2306    
2307    checkpoint51n_pre
2308    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2309    o added [#include "AD_CONFIG.h"] to all files that use the following
2310      defines:
2311      - ALLOW_ADJOINT_RUN
2312      - ALLOW_TANGENTLINEAR_RUN
2313      - ALLOW_ECCO_OPTIMIZATION
2314    
2315    checkpoint51m_post
2316    o incorporating changes to get TAMC/TAF working in genmake2
2317      - added new TAMC/TAF targets to the Makefile
2318      - various cleanups related to package handling
2319      - these changes should have no impact on the forward model
2320    
2321    checkpoint51l_post
2322    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2323     - faster algorithm for cal_addtime.F
2324     - higher precision arithmetic, where needed
2325     - pkg/exf *startdate variables changed from calendar date to
2326       model integration time
2327    
2328    checkpoint51l_pre
2329    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2330    o enable to apply restoring on S & T only in a latitude band.
2331    o update output (external_forcing_surf modif. change truncation errors)
2332       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2333    
2334    checkpoint51k_post
2335    o change default to: useNHMTerms=.FALSE.
2336     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2337       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2338     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2339        exp1, ideal_2D_oce
2340     - change data file of oceanic exp (leave the results unchanged for now)
2341       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2342    o set gravitySign automatically according to the vertical coordinate used
2343      (and change sign: back to "logical" value: +1 when R increases downward)
2344    o added an include barrier to the default CPP_OPTIONS.h and
2345      removed the #include "PACKAGES_CONFIG.h" from it
2346    o fix a bug in mom_fluxform (from chk51j_post)
2347    
2348    checkpoint51j_post
2349    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2350    o adjusted some flow directives (dynamics, thermodynamics)
2351    o added cubed-sphere case to test cost function
2352    o heckpoint_lev?_directives.h now include
2353      pkg-specific directives, whenever those are enabled.
2354    o Moving pkg-specific flow directives to corresponding pkg
2355      Moving pkg-specific differentiation list to corresponding pkg
2356      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2357      ---> conventions are
2358           - pkg_ad.flow
2359           - pkg_ad_diff.list
2360           - pkg_ad_check_lev?_dir.h
2361    
2362    checkpoint51i_post
2363    o merge of the branch-genmake2
2364      - knowingly breaks the older genmake
2365      - automatic generation of all ALLOW_${PKG_NAME} defines
2366      - new testreport supersedes older testscript
2367    o large number of package inclusion and header cleanups
2368    checkpoint51i_pre
2369    
2370    o new output for adjoin of global ocean vector invariant
2371    o fix for checkpoint of thermodynamic seaice and bulk_force
2372    o Steph gchem various cleanups
2373    
2374    checkpoint 51h_pre
2375    o fixed some single quotes
2376    o modify gchem pkg to be more versatile
2377    o modifications to clean up dic pkg
2378    o add pkg/cfc
2379    
2380    checkpoint51g_post
2381    o provide links for ARPACK and ADM*TLM
2382    o start removing verification/vero/
2383    o update AD-related stuff
2384      (in particular some IF-statements in model/src/ routines)
2385    o adding to verification/global_ocean.90x40x15/ adjoint of
2386      vector invariant setup
2387    
2388    checkpoint51f_post
2389    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2390    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2391      of tracer Green's fucntions for ocean inversion project.
2392    
2393    checkpoint51f_pre
2394    o Added on-the-fly spatial interpolation capability
2395        "USE_EXF_INTERPOLATION" to pkg/exf.
2396      - This is a temporary Cartesian-grid hack until
2397        the super-duper ESMF coupler becomes available.
2398      - See verification/global_with_exf/README for usage example.
2399      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2400        flags and modified pkg/seaice accordingly.
2401    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2402        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2403        non-local transport term.
2404    
2405    checkpoint51e_post
2406    o pkg/mom_vecinv:
2407      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2408      - add time-ave diagnostic of vorticity advection.
2409    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2410    o atmospheric geopotential: - include water vapor effect;
2411                                - use p^kappa in p* scaling.
2412    o land pkg: read initial state from files.
2413    o AIM : add stratospheric drag in the upper level
2414    
2415    checkpoint51d_post
2416    o change function ILNBLNK (=> last non-blank char.) to return zero
2417      (instead of the string length) when the string. char is empty
2418    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2419    o modif's to restore TAMC compatibility
2420      - avoid "_d" constructs in PARAMETER declarations
2421      - avoid interrupting lines by comment lines
2422    o Use cluster local disks for purely local I/O
2423      vs. globally visible disks needed for ctrl stuff
2424      (merged from ecco-branch)
2425      - new active_file_loc... and mdsio_..._loc routines
2426      - affected packages: autodiff, ctrl, grdchk, mdsio
2427    
2428    checkpoint51c_post
2429    o introducing integer flag debugLevel
2430      - debLevZero: suppress all output
2431      - debLevA: standard
2432      - debLevB: equivalent to current debugMode=.TRUE.
2433    o introducing pathname variable mdsioLocalDir for mdsio
2434      that can be specified at runtime
2435      (relevant for cluster I/O to local disk)
2436    `
2437    >>>checkpoint51b_post
2438    adjoint of ptracers
2439    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2440    o extended state in checkpoint_lev?, etc.
2441    o alternative ctrl/cost with tr1 or ptracer
2442    o new comlev1_bibj_ptracers
2443    o new ptracers.flow
2444    o made ptracers_forcing same as external_forcing_s
2445    o added verification for adjoint with ptracers
2446      - adm. grdchk fail so far
2447      - tlm. grdchk OK
2448      - checked tapelev/comlev recomputations: OK
2449    <<<checkpoint51b_pre
2450    
2451    checkpoint51a_post
2452    o added code for biogeochemistry package
2453      - new pkgs: dic, gchem
2454      - new subroutine in ptracers
2455    o modify code for biogeo packages
2456      - in model/src and pkg/ptracers
2457    
2458    checkpoint51
2459    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2460      - autodiff, ctrl, exf, grdchk, seaice
2461      kept separate packages
2462      - cost, ecco, obcs
2463    o updating verification/internal_wave, verification/lab_sea
2464      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2465    
2466    checkpoint50i_post
2467    o Preparing next differentiable checkpoint and sync
2468      of MAIN vs. ecco-branch
2469      - 1st step: this one is differentiable
2470      - 2nd step: next(! not this) checkpoint will have updated packages
2471                  from ecco-branch)
2472    
2473    checkpoint50h_post
2474    o new package "land": provide surface BC for AIM.
2475    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2476    o AIM: use true log-P extrapolation for near surface temp (= as in
2477        F.Molteni paper) ; update aim.5l_cs output.
2478    o New variable in PARM03 for more flexible pickups
2479    o somewhat cleaned package initialisation sequence for
2480      ctrl/ cost/ ecco/ in packages_... routines
2481    
2482    checkpoint50g_post
2483    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2484      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2485      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2486        made the default because of faster convergence than ADI
2487    
2488    checkpoint50f_post
2489    o exf totally restructured
2490      - replaced all exf_set_ routines by one generic exf_set_gen.F
2491        and made sure it's still differentiable
2492      - split exf_getffields.F into new exf_bulkformulae.F
2493      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2494      - updated adjoint/makefile and relevant verif. accordingly
2495    
2496    checkpoint50f_pre
2497     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2498          + change Evap over land. (update aim.5l_cs output)
2499     o added missing .cvsignores and made uniform across expts
2500     o changed configuration of tidal_basin_2d expt
2501     o added pkg/debug functions for tracing code in fatal crashes
2502     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2503     o new fn in pkg/monitor to stop model if solution grows too big
2504     o removed lots of single quotes from comments
2505    
2506    checkpoint50e_post
2507    o make KPP work with PTRACERS
2508     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2509       nearly a copy of kpp_transport_s
2510     - there is no analogue to SurfaceTendencyS, so I have to use
2511       gPtr(of the surface layer) instead
2512    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2513    checkpoint50e_pre
2514    
2515    checkpoint50d_post
2516    o change kpp output from multiple-record state files to single-record state
2517      files analogous to write_state.F
2518    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2519      analogous to the cg2d-related output.
2520    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2521      so that writing to internal file fn (with length 512) fails.
2522    checkpoint50d_pre
2523    
2524    checkpoint50c_post
2525    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2526    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2527    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2528    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2529    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2530    
2531    checkpoint50c_pre
2532    Merging from release1_p13:
2533    o bug fix for pkg/seaice dynamic solver
2534    o Added SEAICE_initialHEFF to pkg/seaice
2535    
2536    checkpoint50b_post
2537    o store u*,v* in gU,V instead of in guNm1,gvNm1
2538    o in order to put the momForcing out of the Adams-Bashforth:
2539      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2540      to timestep.F
2541    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2542    o re-generate output for highly sensitive test-exp:
2543       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2544    
2545    checkpoint50b_pre
2546    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2547    o corrected CPP option mismatch in exf_Bulk... functions for case
2548      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2549    
2550    checkpoint50a_post
2551    o Bug fix for merging between c50 and KPP.
2552      ikey was passed from thermodynamics to kpp_calc via
2553      common block rather than being recomputed in kpp_calc,
2554      in contradiction with new key itdkey.
2555      New key ikppkey created, and tamc.h headers updated.
2556    
2557    checkpoint50
2558    - 2nd step of merge with ecco-branch:
2559      merge changes in ecco-branch back into main trunk
2560    - bug fix in find_alpha
2561    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2562    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2563    - merged some sliced AD support routines
2564    
2565    checkpoint49
2566    merged from ecco-branch:
2567    o exf:
2568      - Enable initialisation of forcing fields to constant
2569        (runtime) values.
2570      - in exf_getffields.F
2571        Reduce i-/j-loop to interior domain, discarding overlaps.
2572        That also fixes wrong TAF-key computations for key_1, key_2
2573        with bulf formulae.
2574      - exf_init.F modify #ifdef for exf_init_evap
2575      - exf_getffieldrec.F, ctrl_getrec.F
2576        The following INT-usages are not safe:
2577          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2578          fldcount = int(fldsecs/fldperiod) + 1
2579        and were modified.
2580    o autodiff: checkpoint_lev...
2581      - updated storing for bulk formulae (some arrays were missing)
2582      - added state for seaice package
2583      - synchronized with main branch
2584    o DIVA:
2585      Modif.s in
2586      - the_main_loop.F
2587      - the_model_main.F
2588      and added cost_final_restore.F cost_final_store.F
2589      o With these changes, it is possible to fully separate
2590        the first forward run to compute the cost function (mdthe_main_loop)
2591        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2592        into separate model executions.
2593        This enables better tuning of DIVA to given queue sizes.
2594      o Loss of cost function value in consecutive DIVA runs is
2595        fixed by storing to 'costfinal' file.
2596      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2597        beginning/end of adjoint integration is accounted for.
2598      The current changes apply to TAF-1.4.26.
2599      TAF has one remaining bug, requiring one manual change
2600      (see MITgcm manual).
2601    o cal: synchronized between MAIN and ecco-branch
2602    
2603    checkpoint48i_post
2604    o Changes to restore differentiability of code w.r.t. previous tag
2605      (mostly adding new routines to make list and replacing
2606      pressure by totPhiHyd).
2607    o Updated and merged grdchk package
2608      - has both ADM and TLM checks
2609      - works for single- and multi-proc.
2610      - output cleaned
2611      - worked successfully for parallel DIVA
2612    o genmake:
2613      - Adding -platform=SP4
2614      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2615    o Modif. for DIVA:
2616      ctrl_unpack should not be called in intermediate DIVA interval.
2617      (similar thing would apply for active files such as
2618      tbar, sbar, psbar, which should not be reinitialised;
2619      only relevant for ecco-branch)
2620    
2621    checkpoint48h_post
2622    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2623    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2624    o Added SEAICE_initialHEFF to pkg/seaice
2625    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2626    
2627    checkpoint48g_post
2628    --- EOS:
2629    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2630      store total Potential in totPhyHyd for diagnostics & EOS.
2631    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2632    --- Pressure/geopotential gradient:
2633    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2634    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2635      ( changes results of global_ocean_pressure )
2636    o NLFS + z-coord.: add eta*Rho' contribution.
2637    o accurate phiHyd when using interface-W at the middle between 2 centers
2638     ( changes results of ideal_2D_oce )
2639    o includes r* 2nd term in potential gradient.
2640    
2641    checkpoint48f_post
2642    Merging from release1_p12:
2643    o Modifications for using pkg/exf with pkg/seaice
2644      - improved description of the various forcing configurations
2645      - added basic radiation bulk formulae to pkg/exf
2646      - units/sign fix for evap computation in exf_getffields.F
2647      - updated verification/global_with_exf/results/output.txt
2648    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2649      (SBO) core products, including oceanic mass, center-of-mass,
2650      angular, and bottom pressure (see pkg/sbo/README.sbo).
2651    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2652      to avoid negative values in shallow regions.
2653      - updated verification/natl_box/results/output.txt
2654      - updated verification/lab_sea/results/output.txt
2655    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2656    o Added useSingleCpuIO option (see PARAMS.h).
2657    o Updated useSingleCpuIO option in mdsio_writefield.F to
2658      work with multi-field files, e.g., for single-file pickup.
2659    o pkg/seaice:
2660      - bug fix in growth.F: QNET for no shortwave case
2661      - added HeffFile for specifying initial sea-ice thickness
2662      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2663    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2664      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2665    o pkg/seaice:
2666      - adjoint-friendly modifications
2667      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2668    
2669    checkpoint48e_post
2670    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2671    o dynamics: change definition of computational domain & adapt mom_fluxform
2672      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2673    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2674        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2675        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2676        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2677        inverted_barometer solid-body.cs-32x32x1
2678      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2679    
2680    checkpoint48d_post
2681    o in preparation for r*:
2682     a) use pre-computed gradient of hydrostatic potential:
2683        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2684     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2685        => affects results of glob_oce_pressure (different truncation error)  
2686      update output.txt of ideal_2D_oce & global_ocean_pressure
2687    
2688    checkpoint48d_pre
2689    o in preparation for r*:
2690      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2691      pass the 2 comp. of the grad. as arguments to momentum S/R.
2692      but for the moment, only used if it does not change the results.
2693    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2694    
2695    checkpoint48c_post
2696    Modifications in treatment of initial flux forcing controls
2697    to avoid extra storing of flux fields.
2698    
2699    checkpoint48c_pre
2700    o Added tidal_basin_2d experiment (currently 1D!)
2701    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2702    
2703    checkpoint48b_post
2704    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2705     (modification to pressure gradient not yet implemented)
2706    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2707      (for U & V) that are used for vertical advection of momentum.
2708    
2709    checkpoint48a_post
2710    o In preparation for r*, use temp. array to compute vertical transport
2711       in flux-form momentum pkg. => change results of few test-exp.
2712      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2713                        lab_sea, natl_box & plume_on_slope
2714    
2715    checkpoint48
2716    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2717    
2718    checkpoint47j_post
2719    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2720    o moved adexch from forward_step to addummy_in_stepping
2721    o added exch in ctrl_map_...
2722    o aveFreq.=0. at end of cost_final to avoid overwrite in
2723      reverse checkpointing loop
2724    o Yet more changes in gmredi:
2725      * adgmredi_calc_tensor
2726        avoiding all recomputation of gmredi_slope_limit
2727      * adgmredi_x/y/rtransport
2728        added flag for excessive storing to avoid recomp. of
2729        u/v/rtans, dTdx/y/z
2730        -> this is not really necessary and very memory-consuming
2731      * adgmredi_slope_psi:
2732        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2733      * gmredi_slope_limit
2734        re-activated full calculation of taperfct for case 'ac02'
2735    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2736    
2737    checkpoint47i_post
2738    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2739    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2740      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2741    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2742    o gmredi: fix few bugs.
2743    
2744    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2745    This will be a good checkpoint to plug into the ecco-branch.
2746    o few modif.'s to get latest version adjointed
2747      (mainly kick out code in ini_linear_phisurf)
2748    o modif's to run adjoint with exactConserv
2749    o case GM_BOLUS_ADVEC should be cleaned
2750      S/R gmredi_slope_psi should be cleaned
2751    o verification/carbon now has exactConserv=.TRUE.
2752    
2753    checkpoint47g_post
2754    o time-average AIM output: becomes independent from statvars time-average
2755      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2756    o After TAF bug fix:
2757      Tested adjoint of gmredi package.
2758      Tests were done with checkpoint47 rather than with latest
2759      checkpoint47f_post since the latter is broken for the adjoint
2760      verification/carbon/ contains both ADM and TLM gradient checks.
2761    Here they are, before they get changed/lost/stolen.
2762    Mostly modif.'s to fix numerical sensitivities.
2763    Gradient checks OK for
2764    - GM_taper_scheme:
2765      * clipping
2766      * ac02
2767      * linear
2768      * glw91
2769      * dm95
2770      * ldd97
2771    - GMREDI_OPTIONS:
2772      * GM_VISBECK_VARIABLE_K
2773      * GM_NON_UNITY_DIAGONAL
2774      * GM_EXTRA_DIAGONAL
2775      * GM_BOLUS_ADVEC
2776    in conjunction with data.gmredi parameters to be checked in
2777    in a few minutes under verification/carbon/code/
2778    
2779    checkpoint47f_post
2780    Merging from release1_p10:
2781    o modifications for using pkg/exf with pkg/seaice
2782      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2783        and SEAICE_EXTERNAL_FLUXES
2784      - pkg/exf CPP options EXF_READ_EVAP and
2785        EXF_NO_BULK_COMPUTATIONS
2786      - usage examples are Experiments 8 and 9 in
2787        verification/lab_sea/README
2788      - verification/lab_sea default experiment now uses
2789        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2790    
2791    checkpoint47e_post
2792    o created a tag prior to creating a branch
2793    
2794    checkpoint47d_post
2795    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2796      at the bottom boundary had an erroneous half slip boundary condition
2797    o added bottom drag and no slip boundary condition capabilities to
2798      oceanic pressure coordinates code
2799    o added new verification experiment global_ocean_pressure, this experiment is
2800      also described in the tutorial section of the manual
2801    checkpoint47d_pre
2802    
2803    checkpoint47c_post
2804    o Added a verification experiment for a global cubed-sphere ocean run
2805      -  verification/global_ocean.cubed32x32x30
2806      -  uses pkg/therm_seaice and pkg/bulk_forcing
2807    
2808    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2809    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2810      when using P-coordinate; only implemented for atmospheric config.
2811    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2812      NOTES: requires option NONLIN_FRSURF to be "#define".
2813    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2814    
2815    checkpoint47b_post
2816    Merging from release1_p9:
2817    o pkg/seaice
2818      - removed GOTO's and added taf directives
2819      - double precision constants to reduce the g77 (Linux)
2820        to F77 (SGI) differences reported in release1_p8
2821    o tools/genmake
2822      - added SGI options
2823    o verification/testscript
2824      - updated to that of checkpoint47a_post
2825    o verification/global_ocean.90x40x15/input/eedata
2826      - modified for SGI f77 compatibility
2827    o verification/lab_sea
2828      - added description of sea-ice model
2829      - added missing matlab routines
2830      - added test of thermodynamics parallelization
2831    
2832    checkpoint47a_post
2833    o new pkg: aim_v23
2834     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2835       for now, keep the same surface forcing as before.
2836     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2837     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2838     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2839    o add diagnostic of surface correction term in monitor output
2840    
2841    o bulk_force and therm_seaice
2842    - Two packages:  bulk_force (Bulk forcing)
2843      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2844    - Earlier integration from Stephaine Dutkiewicz
2845      and Patrick Heimbach.
2846    - Two ifdef statements for compile time,
2847       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2848    
2849    checkpoint47
2850    differentiable version of checkpoint46n_post
2851    o bug fix in quasihydrostaticterms
2852    o * "clean" adjoint code (in terms of extensive recomputations)
2853        can now be obtained for all GMREDI options (i.e. for
2854        - GM_VISBECK_VARIABLE_K
2855        - GM_NON_UNITY_DIAGONAL
2856        - GM_EXTRA_DIAGONAL
2857        - GM_BOLUS_ADVEC )
2858      * However, wrong gradient check problem remains unsolved.
2859      * New CPP options have been introduced for different
2860        tapering schemes
2861    o external_fields_load now part of differentiation list
2862    o pressure needs multiple storing;
2863      would be nice to have store_pressure at beginning or
2864      end of forward_step, e.g. by having phiHyd global (5-dim.)
2865      (NB: pressure is needed for certain cases in find_rho,
2866      which is also invoked through convective_adjustment).
2867    o recomputations in find_rho for cases
2868     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2869    o #define ATMOSPHERIC_LOADING should be differentiable
2870    o ini_forcing shifted to begining of initialise_varia
2871    o Incorporating QNVS line search routines into MITgcm
2872      (this is separate code, and therefore not under pkg)
2873      lsopt/, optim/
2874    o Updated verification/carbon/
2875      - #define GM_VISBECK_VARIABLE_K
2876      - GM_taper_scheme    = 'ldd97'    
2877    
2878    checkpoint46n_post
2879    Merging from release1_p8:
2880    o verification/natl_box:
2881      updating new external_fields_load routine
2882    o New package: pkg/seaice
2883      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2884      The sea-ice code is based on Hibler (1979-1980).
2885      Two sea-ice dynamic solvers, ADI and LSR, are included.
2886      In addition to computing prognostic sea-ice variables and diagnosing
2887      the forcing/external data fields that drive the ocean model,
2888      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2889      The implied surface heat flux is then stored in variable
2890      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2891      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2892      non-local transport term.  Because this call precedes model
2893      thermodynamics, temperature under sea-ice may not be "exactly" at
2894      the freezing point by the time theta is dumped or time-averaged.
2895      N.B.: fairly large differences in accuracy occur across
2896            different platforms/compilers; comparison between
2897            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2898            generated output gives:
2899       T           S           U           V
2900      C D M    c        m  s        m  s        m  s        m  s
2901      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2902      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2903      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2904    
2905      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2906    o GAD:
2907      - generated new common blocks to account for call of
2908        same gad routines with differing traceridentities
2909        (needed to modify tracerIdentity indices in GAD.h)
2910      - generated separate common blocks for case useCubedSphereExchange
2911        (Department of Futurology)
2912      - parameter lists to gmredi_?transport: added tracerIdentity
2913      - added new key indices to tamc.h
2914    o external_fields_load:
2915      - added this routine to TAF list
2916      - needed to make some common blocks global and additional storing
2917        along the same lines as exf package (checkpoint_lev?_directives.h)
2918    o exf:
2919      updated external forcing package
2920      - bug fixes carried over from ecco-branch
2921        (missing OBCS_OPTIONS.h in two routines)
2922      - enable easy to use "no forcing".
2923      - added exf I/O for atmospheric loading
2924      - added exf I/O for runoff data
2925      - transfered scaling between exf <-> MITgcm to exf namelist
2926    o Adding new verification experiment global_with_exf.
2927      This verification experiment is almost identical to the
2928      global_ocean.90x40x15 experiment, except that it uses
2929      the exf (and cal) package instead of the
2930      external_fields_load routine (cf README file).
2931    
2932    checkpoint46m_post
2933    o modified testscript to return -- when there are no lines of "%MON" output
2934    o added new flag "quasiHydrostatic" for QH mode
2935      and new routine quasihydrostaticterms()
2936    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2937      New routine: mom_u_coriolis_nh()
2938    o fixed sign of non-hydrostatic metric terms in u and v equations.
2939      Depend on correct sign of gravitySign.
2940    o added work.pc* to .cvsignore in aim directories using ifc
2941    o introduced flag for controllin non-hydrostatic metric terms
2942    o removed gravitySign from PARM04
2943    o switched to g77/ifc from pgf77 in aim experiments
2944    
2945    checkpoint46l_post
2946    o made convective adjustment work with pressure coordinates:
2947     - changed the direction of k-loop in convective_adjustment.F for the
2948       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2949     - adjusted the reference pressure k-index in convective_adjustment.F
2950     - adjusted the convection condition in convect.F (in analogy to
2951       calc_ivdc.F)
2952     - convective_adjustment no longer computes anything on the halos
2953     - removed the warnings about negative salinity from find_rho.F and
2954       find_alpha.F; instead the new routine look_for_neg_salinity, called
2955       at the beginning of find_rho, find_alpha, and find_beta, does a
2956       check of the entire slice, if CPP-option
2957       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2958    checkpoint46l_pre
2959    
2960    checkpoint46k_post
2961    o fixed the verification/global_ocean.90x40x15 experiment:
2962     - new bathymetry (the world according to A., JMC, and M.)
2963     - new initial fields and forcing fields (*.bin files)
2964     - new POLY3.COEFFS (for the next release one should switch to a full
2965       equation of state: JMD95P or MDJWF)
2966     - fixed several errors and redundancies in the data file
2967     - experiment uses looped cells
2968     - added matlab directory with diagnostic scripts for plotting of output
2969    
2970    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2971     - read AIM physics parameters from a file (data.aimphys)
2972     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2973    
2974    checkpoint46j_post
2975    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2976    o move wVel computation at the end of the time step, in S/R integr_continuity
2977    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2978    o update timeave pkg for wVel diagnostic.
2979    checkpoint46j_pre
2980    
2981    checkpoint46i_post
2982    o Clean up AIM package (and keep the results unchanged):
2983      include CPP_OPTION and use IMPLICT NONE in all routines ;
2984      declare all the variables _RL ; use _d 0 for all numerical constants.
2985      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2986    
2987    checkpoint46h_post
2988    o cleaned up the use of rhoNil and rhoConst.
2989      - rhoNil should only appear in the LINEAR equation of state, everywhere
2990        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2991        and the dynamical equations are all divided by rhoConst
2992    o introduced new parameter rhoConstFresh, a reference density of fresh
2993      water, to remove the fresh water flux's dependence on rhoNil. The default
2994      value is 999.8 kg/m^3
2995    o cleanup up external_forcing.F and external_forcing_surf.F
2996      - can now be used by both OCEANIC and OCEANICP
2997    checkpoint46h_pre
2998    
2999     Added code to convert surface volume flux (fresh water) into
3000     a mass flux when using P coordinates in the ocean (OCEANICP).
3001     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3002    
3003    checkpoint46g_post
3004    o Include a new diagnostic variable phiHydLow for the ocean model
3005      - in z-coordinates, it is the bottom pressure anomaly
3006      - in p-coordinates, it is the sea surface elevation
3007      - in both cases, these variable have global drift, reflecting the mass
3008        drift in z-coordinates and the volume drift in p-coordinates
3009      - included time averaging for phiHydLow, be aware of the drift!
3010    o depth-dependent computation of Bo_surf for pressure coordinates
3011      in the ocean (buoyancyRelation='OCEANICP')
3012      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3013        Theta, Salinity, and Pressure in the parameter list. This routine is
3014        presently contained in find_rho.F. This routine does not give the
3015        correct density for 'POLY3', which would be a z-dependent reference
3016        density.
3017    o cleaned up find_rho
3018      - removed obsolete 'eqn' from the parameter list.
3019    o added two new verification experiments: gop and goz
3020      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3021    checkpoint46g_pre
3022    
3023    checkpoint46f_post
3024    o Enable tangent linear (forward mode) gradient checks:
3025      - extended active file handling to g_... files
3026      - added TANGENT_SIMULATION to theSimulationMode
3027      - extended grdchk package accordingly
3028    o added tangent linear setup in verification/carbon/code_ftl
3029    o added adjoint setup in verification/front_relax/code_ad
3030    
3031    checkpoint46e_post
3032    o Added new equation of state -> MDJWF
3033      - EOS of McDougall et al., 2002, JAOT, submitted
3034      - caveat: the equation of state is only valid for a smaller (more
3035        realistic?) range of values than JMD95P/Z and UNESCO
3036      - added masks to the calculation of pressure in store_pressure
3037      - added more check values for density in check_eos (ini_eos.F), some of
3038        the old check values are out of the range of the MDJWF-eos, so don't
3039        expect perfect matches for those
3040    checkpoint46e_pre
3041    
3042    checkpoint46d_post
3043    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3044      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3045      case of pressure coordinates. eosType='JMD95Z' in
3046      combination with buoyancyRelation='OCEANICP' now causes an error.
3047    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3048      in find_alpha/beta.
3049    checkpoint46d_pre
3050    
3051    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3052      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3053    
3054    checkpoint46c_post
3055    o Changes necessary for ocean in p-coordinates
3056     -  Added new buoyancy relation = 'OCEANICP'
3057     -  Added new parameters = gravitySign (this used to be contained inside
3058        the factor dRdZ which I added when we first switched to R coordinates).
3059     X GM/Redi is not compatible (yet)
3060     X bottom drag and no-slip need to be debugged.
3061    checkpoint46c_pre
3062    
3063    checkpoint46b_post
3064    o Added new equation of state -> JMD95Z and JMD95P
3065      - EOS of Jackett and McDougall, 1995, JAOT
3066      - moved all EOS parameters into EOS.h
3067      - new routines ini_eos.F, store_pressure.F
3068    o Added UNESCO EOS, but not recommended because it requires
3069      in-situ temperature (see JMD95)
3070    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3071      unesco.f to be used with POLY3
3072    checkpoint46b_pre
3073    
3074    checkpoint46a_post
3075    o Added (atmospheric) pressure loading
3076      - new field in FFIELDS.h, etc...
3077      - new cpp flag ATMOSPHERIC_LOADING
3078    o Changed hFacC to _hFacC in calc_phi_hyd.F
3079    o Added SHORTWAVE_HEATING to some files for consistency
3080    checkpoint46a_pre
3081    
3082    checkpoint46
3083    further merges from release1_p5
3084    o new ctrl package
3085      - adopted from ECCO environment to enable optimization
3086      - added Eliassen Palm fluxes to controls
3087    o added Eliassen Palm flux controls to gradient check package
3088    o cost package
3089      - Compatible with new ctrl package
3090      - added Eliassen Palm cost hooks
3091      - modif's of existing cost functions
3092    o Adjoint-related bug fixes in kpp:
3093      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3094      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3095    o autodiff package
3096      - flow directives:
3097        + new for S/R do_the_model_io
3098        + enhanced for S/R checkpoint
3099        + new gmredi.flow
3100      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3101        disable adcommon.h/g_common.h by default.
3102      - fixed problem for adjoint of global_max
3103    o modified verification/carbon/
3104    o New setup for adjoint of global_ocean
3105    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3106    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3107    o incorporated hooks for sponge layer code (external_forcing.F)
3108    
3109    checkpoint45d_post
3110    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3111    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3112      (affects plume_on_slope "cg2d" output)
3113    o add new parameter deltaTfreesurf for free-surface time stepping
3114    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3115  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3116  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3117  o add new flags:  o add new flags:

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