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revision 1.319 by heimbach, Fri Jul 2 17:59:46 2004 UTC revision 1.897 by dimitri, Tue Oct 23 08:25:28 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 added open boundary conditions capability for seaice HSNOW and HSALT
8    
9    checkpoint59i
10    o adjoint:
11      * fix multiDimAdvection adjoint
12        (partial recomputation problem by TAF for fVerT(:,:,kDown)
13        and comlev1 size definition (maxpass vs. max. number of tracers)
14      * verification/global_ocean.90x45x15 adjoint now tests
15        NLFS and multiDimAdvection using DST3 (=30)
16      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
17    o pkg/kpp: add "_d 0" to real constant (if missing);
18      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
19      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
20    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
21      for internal parameters related to restart process (formerly from PARAMS.h)
22      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
23    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
24      as argument. (only atm2d & obcs write_pickup have not yet been updated)
25    o pkg/monitor:
26      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
27      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
28      - account for deep Atmosphere factor and density factor (anelastic)
29    o added open boundary conditions capability for seaice HEFF and AREA
30    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
31      thermodynamics
32      - requires a little reorganization, which affects the testreport results
33        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
34        so that now the conservative form is tested
35      - add a few comments
36    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
37    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
38    o add new diagnostics to seaice: advective, diffusive fluxes (only for
39      multidim-advection, for scheme 2 they are not filled) and transports,
40      thermodynamic growth rates
41    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
42      leave input file unchanged. Affects results @ truncation level (cg2d match)
43      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
44      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
45      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
46      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
47    
48    checkpoint59h
49    o pkg/exf:
50      - improve vectorization by moving if-statement out of loops in
51        exf_mapfields, exf_radiation
52      - exf_bulkformulae.F: introduce 2D fields and vectorize code
53    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
54    o testreport:
55      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
56        monitor & update offline_exf_seaice exp. output.
57      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
58    o pkg/seaice:
59      - bug fix in the evp solver: boundary conditions were affected be
60        masking of zMax/zMin (changes results)
61      - minor bug fix in boundary conditions in seaice_calc_strainrates
62        (changes results for no_slip)
63      - seaice_lsr.F: make interpolation of eta dependent on boundaries
64      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
65      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
66        stress formulation and no-slip boundary conditions
67    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
68      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
69    o pkg/seaice: a first HSALT time stepping equation has been checked in
70    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
71      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
72      without requiring DO-IF statements
73    o pkg/thsice:
74      use continuous power-law function for partition of energy between lateral
75      melting/freezing and thinning/thickening ; old code using step function
76      still available with #undef THSICE_FRACEN_POWERLAW
77      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
78    o testreport: change AD testing : check against results/output_adm.txt
79      using same scripts as for forward test.
80    
81    checkpoint59g
82    o adjoint testing: in preparation for changing testreport:
83      - output format: cost and grad written on separated lines
84      - ad output results in directory "results" (instead of "results_ad")
85    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
86    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
87    o pkg/ecco: allow user defined cost function contributions
88    o testreport:
89      Allow to choose (per experiment) the list of tested output variables
90       and the main variable (used to issue a pass/FAIL ) ;
91      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
92      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
93      Also modify printing of summary:
94       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
95       b) echo the list of tested variables in the individual summary.txt of
96          each experiment.
97    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
98      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
99      (but still depend on the tile decompostion of the domain).
100    o pkg/seaice: change a discretization detail to make the B-grid code
101      "more symmetric". This change is likely to remove all "ridges/leads" that
102      where quasi-aligned with the grid in B-grid solutions. It may also be
103      the solution to the stress coupling issues with the B-grid.
104    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
105      remove .cvsignore from input dir. (since testreport no longer run here).
106    o pkg/thsice:
107     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
108     - fix reshaping of sea-ice just after advection:
109       melt all the ice only if ice-volume is too small.
110     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
111       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
112     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
113    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
114      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
115    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
116      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
117      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
118      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
119      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
120      -> update output.txt
121    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
122     this affects truncation error: -> update output.txt of exp:
123      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
124      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
125    
126    checkpoint59f
127    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
128    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
129      a bounded range (in forward mode)
130    o pkg/ecco, ctrl, autodiff and mom_common:
131     internal parameter controls, completements of implementations
132    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
133    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
134      (not seem any difference in testing results).
135    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
136       at face corners.
137    o pkg/generic_advdiff:
138     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
139      loop range indices for computing vertical advection tendency
140      and do the calculation in the interior only (no overlap) ;
141      for now, only implemented for SOM advection (to save CPU time).
142     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
143    o exch2 adjoint
144      First set of changes:
145      - add exch2 hand-written adjoint templates
146      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
147        This will require cleanup in pkg/autodiff/*.F
148        (changed routines currently kept separate in verif. code/)
149      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
150        that used to hide exch2 or cubed-sphere specific code
151        (commented via 'cph-exch2')
152    o pkg/seaice
153      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
154    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
155       output of global_ocean.cs32x15.thsice .
156    
157    checkpoint59e
158    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
159      for B-grid vector (not yet tested) and C-grid vector (<- only used
160      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
161    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
162      (#ifdef ALLOW_SALT_PLUME)
163    o gather_2d/scatter_2d: removed halo regions
164    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
165      scheme and the corresponding test case (under front_relax dir). For now,
166      only available with Skew-flux form and not yet tested in realistic set-up.
167      adjoint: store directives updated, but gradient checks deteriorated,
168      so maybe GM/Redi adjoint is now broken.
169    o seaice adjoint
170      * add AREA, HEFF, HSNOW as control variable
171        (should not change lab_sea results)
172      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
173    o pkg/seaice:
174      * added computation of saltFlux in seaice_growth;
175        For time being, sea ice salinity is assumed constant
176        contribution of snow flooding to freshening of sea ice is neglected.
177        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
178        defaults to 0.0 in order to maintain backward compatibility.
179        Typical values for SEAICE_salinity are 4 to 10 g/kg.
180      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
181      * added SEAICE_availHeatFrac, which specifies fraction of surface level
182        heat content used to melt or grow ice
183      * commented out cap of HICE: it helps keep ice thinner
184      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
185      * applied OBCS T/S mask to HEFFM sea ice mask
186    
187    checkpoint59d
188    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
189     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
190     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
191    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
192     and change default value of parameter "GM_Small_Number";
193     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
194       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
195       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
196    o pkg/ecco: cost function when applying pkg/smooth to controls
197    o pkg/ctrl: add forcingPrecond run time parameter
198    o pkg/seaice:
199     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
200     - fix bug in metric terms of u-equation in LSR solver (implicit part),
201       changes verification/lab_sea
202     - rearrange implicit part of u-equation in LSR solver to make it easier to
203       read, understand, and debug. This causes changes at the truncation level.
204     - fix (serious) bug in the boundary conditions (sign error in the implicit
205       part) of the LSR solver. Changes all LSR results.
206     - fixed problem with HSNOW initialization to avoid thick snow when AREA
207       is initilized with small values - does not change lab_sea results.
208     - added HsnowFile initialization capability
209    o pkg/smooth: addition to model/src and pkg/ctrl so allow
210     initialization of pkg/smooth and application to control vector
211    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
212    o dependencies: pkg/profiles requires pkg/cal
213    o pkg/profiles:
214     - added option ALLOW_PROFILES_GENERICGRID
215         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
216         that interpolation information (grid points and coefficients) is provided
217         within the netcdf input files.
218         -> sample matlab scripts can be found in MITgcm_contrib/gael
219         that allow you to prepare netcdf input files.
220     - also modified: cleaner include statements, cleaner error print statements,
221       cleaner stops when error, and more tests of the netcdf input files consistency.
222    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
223    o pkg/seaice:
224     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
225       requires a new routine: seaice_diagnostics_fill.F
226     - make sure that seaice does not move if not forced (pressure replacement
227       method, Hibler and Ip, 1995), changes results
228     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
229     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
230       It is turned off by default (=-1.), because it changes the results.
231     - make it possible to read AREA from a file, too.
232    
233    checkpoint59c
234    o add S/R and diagnostics for oceanic mixed-layer depth
235    o move GMRedi call after all vertical mixing schemes (including KPP)
236    o pkg/thsice:
237     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
238      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
239    o pkg/obcs:
240     - bug fix for balance code
241    o pkg/seaice:
242      - allow values of SEAICE_elasticParm > 1
243      - add new parameter SEAICE_evpTauRelax as an alternative
244        to SEAICE_elasticParm
245      - make lsr boundary conditions free slip (by default), changes result
246      - add code for no slip boundary conditions for lsr
247      - set minimum of zeta to zero (and not 4e8) (changes results)
248      - add a cap on AREA after advecting AREA if seaice_growth is not called
249    o change calculation of Visbeck K:
250      - no longer depend on tapering scheme; instead, compute slope (limited
251        by GM_maxSlope). this is equivalent to what was comuted before with
252        clipping or linear tappering.
253      - fix vertical averaging (wrong by 1/2 level)
254      - leave the old version (but will not be maintained) within
255        #ifdef OLD_VISBECK_CALC / #endif
256      - update output of exp. ideal_2D_oce
257    o change error catch in calc_r_star to improve vectorization
258    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
259      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
260    o adjoint:
261      Re-organized adjoint checkpointing according to Matt Mazloff
262      (but with modifs/completions/cleanups)
263      Storing is now bundled into large arrays to optimized I/O
264      (and second step in cleanup of the_main_loop)
265    
266    checkpoint59b
267    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
268      - export/import (between ocean & coupler) fields needed for ocean DIC.
269    o pkg/seaice:
270      - get rid of three more exchanges seaice_calc_viscosities (required
271        different loop boundaries in seaice_lsr and seaice_ocean_stress)
272      - bug fix in seaice_ocean_stress (update of lab_sea required)
273      - reduce loop boundaries to necessary minimum also in seaice_evp
274      - go back to the old way of computing deltaC/Z as the adjoint likes that
275        better
276    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
277      passive tracer to an Age Tracer) + update output.txt
278    o pkg/exf:
279      - implement A-grid / C-grid selection for wind-stress input files.
280      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
281      for now, in exf_bulk_largeyeager04.F only :
282      - change implementation for case where windspeed + 2. components wind-stress
283        are read-in. AND use rhoConstFresh to convert evap.
284    o pkg/seaice:
285      - use correct EXCH_UV for wind-forcing (on A-grid).
286      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
287        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
288    o pkg/exf:
289      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
290      EXF_INTERPOLATION:
291      - merge global_with_exf/code version of exf_interp_read.F
292        to the main code ;
293      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
294        reading the file ; Important: This options needs to be defined to recover
295        previous code.
296        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
297      - no longer loose real*8 precision along the way when using exf_iprec=64.
298    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
299      - change discretisation of evp-solver in order to avoid another exchange
300        (changes lab_sea) and clean up a little
301      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
302        help the adjoint (this also changes the results slightly)
303      - add a few "_d 0" where they had been missing in seaice_evp.F
304      - cleaning up: remove unused seaice_calc_rhs.F
305    o pkg/exf: some cleaning-up:
306      - change various "constants" into runtime parameters
307      - cleaned-up Large&Yeager04 routine which should eventually
308        replace exf_bulkformulae.F (changed names of S/R and CPP)
309        and merged various ALLOW_ATM_WIND options
310     only used with thsice pkg (in thsice_get_exf.F):
311      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
312        which are used when useStabilityFct_overIce=TRUE (= the default)
313      - change default values of ice & snow emissivity and scale downward LW
314        by ice & snow emissivity.
315    o pkg/thsice:
316     fix few little problems, in thsice_calc_thickn.F:
317      - growth vertically (and not laterally) if iceFrac == iceMaskMax
318      - melt only laterally if hIce < hThinIce (as the comments say)
319      and in thsice_extend.F:
320      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
321      - start to form ice as soon as the minimum ice-volume is reachable.
322     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
323      and cpl_aim+ocn
324    o pkg/kpp
325     - move computation of surface related input fields to KPP into a new
326       subroutine kpp_forcing_surf.F
327     - remove wrong (within bi,bj loops) EXCH calls.
328     - little cleaning (add argument myThid in last position, cvs header ...)
329     - for now, fix conservation problem by exchanging KPPviscAz (may not
330       be the best fix)
331    o pkg/seaice
332     - check for inconsistent evp parameter/cpp-flag combination
333     - remove leftover errIO flat for obsolete name list error handling
334    o OpenAD
335     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
336    
337    checkpoint59a
338    o pkg/seaice: some parameter clarifications and a little bit of clean up
339    o pkg/thsice: rename run-time parameters:
340       himin       -> hIceMin
341       himin0      -> hThinIce
342       hihig       -> hThickIce
343       i0          -> i0swFrac
344       transCoef   -> bMeltCoef
345       frac_energy -> fracMelting
346      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
347       with default values (for now) that do not change the results.
348      remove old version of thsice vars advection in pkg/seaice.
349    o in FFIELDS.h:
350      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
351      - make pLoad & sIceLoad always available (but still only used if
352         ATMOSPHERIC_LOADING is #define).
353    o pkg/kpp: replaced _KPP_RL with _RL
354    o bug fixes for vertical diffusivity computations when both KPP and
355        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
356        are no longer updating the vertical diffusivity array
357        (passed as argument) but are (re-) setting those arrays.
358    o pkg/seaice: fix bug in evp solver, while doing that
359      - change (improve?) discretization of stress computations for both
360        cgrid-lsr and evp solver
361      - add a new routine to compute strain rates
362      - the above changes lab_sea results
363      - add no slip conditions for evp solver (off by default), lsr-version
364        may follow
365      - fix exchange for shear at Z-points (does not change lab_sea)
366      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
367        (to force the user to pick a time step since there is not "safe" way
368        of choosing it)
369      - add principal stress diagnostics
370      - rearrange fields for evp a little to avoid having to call a: too many
371        exchanges and b: exchanges for stress trensor components which we do
372        not have.
373      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
374        of evp, complete rewrite for lsr case (latter is does not yet work
375        in all cases)
376    o pkg/kpp: add code to have mixing in shelf ice caverns
377      - add myThid to all kpp routines (long overdue)
378    
379    checkpoint59
380    o pkg/exf:
381      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
382        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
383      - move exf header files from lower_case.h to UPPER_CASE.h ;
384        add missing cvs Header & Name
385      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
386      - add namelist param. selectStressGridPosition, exf_monFreq
387      - retire many _CLIM routines, and remove data.exf_clim
388        + params moved to data.exf
389        + climsst, climsss now handled by exf_set_gen, i.e.
390          climss?period=0 refers to constant field,
391          climss?period=-12 to monthly forcing
392      - split up namelists in data.exf
393    o pkg/seaice:
394      - remove seaice_exch and seaice_exch_uv
395      - remove superfluous exchange of theta
396      - add myThid to seaice_budget_ocean/ice
397      - add new interface for atmospheric wind forcing (C-grid only)
398        + new routine
399        + two new field (taux, tauy for stress over ice)
400        + removed one global field (DAIRN) for C-grid case only
401    o pkg/thsise
402      - 2nd set of modifs for thsice adjoint in conjunction with exf
403    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
404    
405    checkpoint58y_post
406    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
407      vertical diffusivity, similar to that in MOM4; turned on using
408      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
409      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
410    o Added capability for 3D specification of background vertical diffusion
411      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
412      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
413      "data" file that contains the 3D vertical diffusivity coefficients.
414    o ice dynamics (pkg/seaice) with thsice thermodynamics:
415      - add code within pkg thsice to advect & diffuse sea-ice fields
416      similar to (and will replace) what has been added in  seaice_advdiff.F,
417      but: - conserving Mass, Heat & Salt.
418           - better when using non-linear advection scheme (not yet fully tested)
419           - can also be used in atmospheric set-up (for now, only the diffusion).
420    
421    checkpoint58x_post
422    o IO option for global-file compact format:
423      - add options when generating topology (utils/exch2/matlab-topology-generator)
424      - add I/O capability (pkg/mdsio).
425      - adapt utils/matlab/rdmds.m to read this format.
426      for now long-line format not yet supported by pkg/mdsio (& exch2).
427    o shelfice: add a few diagnostics
428    
429    checkpoint58w_post
430    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
431      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
432      (and replace horiVertRatio in NH code).
433      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
434                         and tutorial_plume_on_slope (sensitive to truncation)
435    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
436      directly to drive seaice model (C-grid only)
437    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
438     - reintroduce computation of wind from stress,
439     - compute tau (in exf_bulkformulae.F) from windstress averaged to
440       mass points to avoid tau = 0
441     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
442    o rdmnc.m: make it work with "global" files created with gluemnc
443    o rdmnc.m : some improvements in dealing with singleton dimension
444      (tested on all testreport mnc output files).
445    o genmake2: disable pkg/profiles if netcdf test fails.
446    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
447    o move call to cal_readparms up to make calendar parameters/variable available
448      to all packages
449    
450    checkpoint58v_post
451    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
452      useDynP_inEos_Zc tested.
453    o pkg/exf: changes to properly interpolate/mask/scale initial fields
454    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
455      and portions thereof.  See read_cs.txt for description and examples.
456    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
457      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
458      following the great-circle arc between those 2 points.
459    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
460      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
461    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
462     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
463     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
464     - still needs work (not working with some options ; efficiency to improve)
465       and serious testing.
466     - use this scheme for temperature & salinity in 2 advection test exp.:
467       advect_xy & advect_xz, respectively.
468    
469    checkpoint58u_post
470    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
471    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
472    o testreport: add option "-skipdir" to skip some test.
473    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
474      momentum calculation.
475    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
476    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
477      remove checkpoint.F and the_correction_step.F (no longer used);
478      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
479    o add option (linFSConserveTr) to correct for tracer source/sink due to
480      Linear Free surface
481    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
482    o pkg/thsice: fix reading mnc-pickups
483    
484    checkpoint58t_post
485    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
486    o pkg/mdsio:
487     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
488       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
489       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
490     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
491     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
492       either MDS_READ_FIELD or MDS_WRITE_FIELD )
493     - new S/R (to replace MDSWRITEMETA), which allows to write more
494       informations (variable names, time ...) to meta files.
495     - modify rdmds.m to give back the meta file content.
496    o pkg/diagnostics: change vertical interpolation to be safer, and more
497       flexible (define p-levels to interpolate to in data.diagnostics);
498      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
499       diagnostic pointer.
500    o pkg/seaice: more cleaning up of seaice_growth, added many comments
501    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
502    o fix multi-category seaice:
503     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
504       SEAICE_MULTICATEGORY
505     - fix short wave heat flux
506    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
507       and allow to use EVP solver. Change forward lab_sea: test both EVP
508       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
509    o Initial check-in of lab_sea adjoint
510      (very similar to natl_box_adjoint/code_seaice)
511      * used C-grid and EVP solver
512      * used KPP, GM/Redi
513      * uses inAdExact=.TRUE.
514      * gradient checks fail for both ADM and TLM
515        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
516        f.d. gradients actually seem more problematic than ADM, TLM gradients;
517        issue is related to forward mismatch between g77 an ifort
518    o pkg/seaice: overhaul of thermodynamics
519     - growth.F and groatb.F are replaced by new routine seaice_growth.F
520     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
521     - move a few global fields out of SEAICE.h into seaice_growth.F and
522       make them 2D (FICE/QNETO/ ...)
523     - remove FO (it is the same as QNETO)
524     - introduce a few local fields to avoid modifying external fields such
525       as atemp, etc.
526    
527    checkpoint58s_post
528    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
529      changed exf_set_gen.F so that
530        genperiod=0 means input file is one time-constant field and
531        genperiod=-12 means input file contains 12 monthly means
532    o CG2D: use pre-computed solver main-diagonal (stored in common block);
533      this affects truncation error ; generate new output file for exp. which
534      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
535        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
536        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
537        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
538        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
539        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
540    o start implementation of deep-atmosphere and anelastic formulation
541    o verification: remove 2nd copy of input files and use script "prepare_run"
542      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
543    o mom_common/vecinv/fluxform: fix a few initialisation isssues
544    o profiles: fix for multithreaded case
545    
546    o diagnostics: rename few diags:
547      s/'PRESSURE'/'RCENTER '/g
548      s/'TICE    '/'oceFreez'/g
549      s/'TAUX    '/'oceTAUX '/g
550      s/'TAUY    '/'oceTAUY '/g
551      s/'SWFLUX  '/'oceQsw  '/g
552      s/DIFx/DFxE/g
553      s/DIFy/DFyE/g
554      and add few ocean-forcing diagnostics:
555      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
556    o modifications to pkg/seaice/growth.F and budget.F, which change results of
557      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
558      as actual snow thickness.  It now refers everywhere to effective snow
559      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
560    
561    checkpoint58r_post
562    o modifications to pkg/seaice/growth.F, which change results of
563      lab_sea experiment: fixes pertain to melting snow over open water, to
564      masking EVAP under sea ice, and to using the correct AREA variable for
565      computations of EVAP, PRECIP, HSNOW, and GHEFF
566    o add ability to read bathy, salt, and theta using MNC (off by def)
567    o add flooding algorithm and advection of HSNOW for pkg/seaice;
568      both are turned off by default and do no change any results
569    o seaice advection with pkg/thsice: a step toward the use of non-linear
570      advection scheme, but #ifdef or commented out for now (requires more EXCH).
571    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
572      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
573      in natl_box (affects results @ truncation level: update output.txt)
574    o multi-threading and IO:
575      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
576      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
577        (needed to work with SingleCpuIO): tested in all verif. exp.
578    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
579      affects the results (but none of the verification test uses this scheme).
580    o Adding some pkg/diagnostics capability to pkg/seaice
581      (will certainly be subject to changes)
582    o ctrl: adding new control variables:
583      lwflux, lwdown, evap, snowprecip, apressure, runoff
584    
585    checkpoint58q_post
586    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
587      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
588      high_res_cube configuration by 4% on Columbia.
589    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
590      add (in global_with_exf/code) a version of EXF_INTERP_READ without
591      dynamical allocation (seems to work in multi-threaded).
592    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
593      single CPU io) so that TAF does not have to see EESUPPORT.h
594    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
595    
596    checkpoint58p_post
597    o obcs: stop if obcs is used with useCDscheme = .true.
598    o shelfice:
599     - fix a sign error so that no slip at shelfice interface works
600     - remove stop for combination non-hydrostatic code and shelfice. That does
601       not mean, that the results are correct, but at least they are numerically
602       stable
603    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
604    o added adjoint exch routined for all exch*3d* routines
605      and updated flow directives
606    
607    checkpoint58o_post
608    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
609      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
610    o change controling S/R for writing pickup file (new S/R do_write_pickup)
611      and clean-up reading/writing of pickup files.
612    o fix local version of read/write pickup (NH part) in rotating_tank/code
613    o simplify EXCH interface:
614     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
615     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
616    o added the regrid package
617    o shelfice:
618     - add a simple boundary layer scheme to reduce noise
619     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
620    
621    checkpoint58n_post
622    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
623       local variable (not in common block).
624    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
625      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
626      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
627        to work with SingleCpuIO.
628    o add "_d 0" to real constant of pkg/cfc subroutines ;
629       update exp. cfc_exemple & tutorial_cfc_offline output files.
630    o multi-threading and IO:
631      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
632        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
633      - barrier before and after reading.
634      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
635      - avoid using MDS_WRITELOCAL for LAND pkg output.
636      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
637        common-block variables ; Allows multi-threading with master-thread IO.
638    o change default MAX_NO_THREADS from 32 to 4 ;
639      and stop cleanly when MAX_NO_THREADS is too small.
640    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
641    
642    checkpoint58m_post
643    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
644       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
645    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
646       keep global_ocean.90x40x15 (for AD testing) with former secondary test
647       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
648    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
649        add MITgcm_tutorials (= code + all the tutorials)
650    o ecco, option to compute cost for total ssh (mean+anom)
651    o consistent with addition of ptracer and ssh in pkg/profiles
652    o profiles: adding ptracer and ssh
653    o testreport: change multi-test output-file name
654      (from output.txt.{name} to output.{name}.txt)
655    o profiles: now ok for mutli-tiles case
656    o seaice: add 4 parameters for different advection schemes for area,
657      (effective) seaice thickness, enthalphy, and snow height. Their default
658      is the standard parameter SEAICEadvScheme
659    o calc_gw:
660     - add cosFacU in zonal viscous flux (harmonic.visc.).
661     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
662       of tutorial_plume_on_slope.
663    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
664    o calc_gw: true flux-form, account for horizontal grid spacing.
665      update rotating_tank results, but not plume_on_slope (affected at
666      truncation level, 11 digits).
667    
668    checkpoint58l_post
669    o calc_gw:
670     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
671     - remove side-drag for now (need to fix it); update plume_on_slope results.
672     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
673    o commit code to make SST/SSS weights spatially variable
674      (based on either variable in-situ or variable initial T/S weights)
675    o pkg/ecco:
676      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
677        now based on horizontally varying weights wthetaLev, wsaltLev
678      * cost_averagesflags now returns year indices in addition to day, month
679      * sflux balance is performed on annual basis
680        (sflxumm, sfluxmm2, bal_sfluxmm)
681      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
682        including separate counting and multipliers
683    o pkg/rbcs
684      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
685    
686    checkpoint58k_post
687    o testreport:
688     - always build in dir. "build" (if not there, mkdir build instead of building
689       & running in input)
690     - run in dir run (if it exists), in build otherwise.
691     - call prepare_run (if input/prepare_run exists)
692     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
693    o pkg/exf modifications to interpolation and rotation routines for more
694       reasonable treatment of North Pole singularity: for tracers North Pole
695       value is set to northernmost zonal-mean value, for zonal velocity it is
696       set to zero, and for meridional velocity it is set to northernmost value.
697    o pkg/exf/exf_check_range.F
698     - add tile index to diagnostics and move stop statement to the very
699       end of the routine.
700    o pkg/diagnostics: (diagnostics_main_init.F)
701      define title of isomorphic variables according to the current config.
702    o pkg/thsice with pkg/seaice dynamics:
703    - fix domain of computation (interior only, required for exf) and do exchanges
704    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
705    o towards a standard way of dealing with multi-threading in MONITOR
706      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
707    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
708       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
709    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
710    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
711    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
712       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
713    o tracer advection:
714     - clean-up and simplify calc_common_factors.F
715     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
716       advection subroutine (but still not used within DST advection S/R)
717    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
718    
719    checkpoint58j_post
720    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
721      from file (collects calls previously in FORWARD_STEP)
722    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
723    o adjoint store dir. adjusted accordingly
724    o genmake2
725      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
726    
727    checkpoint58i_post
728    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
729      on wind stress (SEAICEstressFactor defaults to 1.)
730    o Total number of Timers is finite (<=40): comment out 2 non-essential one
731      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
732    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
733      on CS-grid: no longer loosing mass.
734    o exf & curvilinear-grid: no longer modify longitude xC & xG.
735    o pkg/ggl90: fix sloppy output and fix a bug
736    o pkg/seaice: added SEAICEuseEVPpickup parameter
737      - Set to false in order to start EVP solver with
738        non-EVP pickup files when using SEAICEuseEVP
739      - fix sign error in diffusion in seaice_calc_rhs
740    
741    checkpoint58h_post
742    * Modifications for bottom topography control
743      o replace hFacC by _hFacC at various places
744      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
745      o add non-self-adjoint cg2d_nsa
746      o update autodiff support routines
747      o re-initialise hfac after ctrl_depth_ini
748      o works for 5x5 box, doesnt work for global_ocean.90x40x15
749    * Adding verification for 5x5 box (4-layer) bottom topography control
750    
751    checkpoint58g_post
752    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
753       used for mean seasonal cycle, mean diurnal cycle); add an example
754       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
755    o pkg/ggl90:
756      - add parameter (minimum surface kinetic energy)
757      - fix bug (avoiding division by zero)
758    o couple pkg/thsice to pkg/seaice:
759      - modify advection in seaice to accomodate new scalar fields to be advected
760      - only muliDimAdection scheme work with seaice/thsice
761      - mapping of thsice-variables to seaice-variables, back and forth
762      - does not break the verification experiments, but does not give the
763        desired results either
764    o pkg/seaice
765      - make (default) second order advection a bit less confusing?
766    
767    checkpoint58f_post
768    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
769      to pkg/seaice):
770      - new routines thsice_map_exf and thsice_get_exf provide the interface
771      - add an additional formal parameter to thsice_solve4temp
772    o pkg/exf:
773      - add new fields wspeed, snowprecip (to be able to couple to thsice)
774      - correct Stefan-Boltzmann constant
775      - new parameter for longwave surface emittance
776      - separate some stuff from exf_bulkformulae into new routines  
777        exf_radiation, exf_wind
778      - add new parameters and constants: longwave emissivity for ocean, ice
779        and snow, evaporation parameters over ice
780      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
781        either wind from stress or stress from wind
782    o pkg/thSIce:
783    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
784    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
785       and THSICE_CALC_THICKN
786    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
787    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
788      to make debugging easier.
789    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
790    o pkg/bulk_force:
791      - clean-up comments and parameters ;
792      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
793    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
794      generate new output for test-experiment: aim.5l_cs.thSI
795    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
796      testreport accordingly
797    
798    checkpoint58e_post
799    o SEAICE_CGRID adjoint done
800    o R_STAR adjoint implemented.
801      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
802      * need to sort out init. of h0facc, etc.
803    o Make pkg/profile fully independent of ecco,cost, etc. stuff
804      to be able to use it in pure forward.
805    
806    checkpoint58d_post
807    o upgrade simple test-experiment to tutorial example:
808     step.1: duplicate the experiment and (step.2) will remove the old copy.
809      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
810      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
811      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
812      tutorial_global_oce_biogeo    <- copy of dic_example
813      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
814      tutorial_plume_on_slope       <- copy of plume_on_slope
815      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
816      tutorial_global_oce_optim     <- empty for now (David ?)
817      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
818     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
819    o correct a sign problem in cost_scat.F
820    o obcs and ptracers: fix boundary conditions for advections schemes
821      with larger stencil
822    o thsice adjoint: start
823    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
824      completeness
825    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
826      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
827    o ptracers adjoint:
828      * avoid extensive recomputatations
829      * fix missing re-init. of gptr (missed by TAF)
830    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
831      me to turn off the excessive output to STDOUT that this package produces
832    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
833      and add those terms in Vector-Invariant formulation.
834    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
835      if the control period (xx_hfluxperiod etc) is 0
836    o in profiles pkg, clean routines and fix details
837    o in ecco pkg, reading ssh data:
838      fix problem in case the model does not start at iter0=0
839    o fix mnc-pickup/restart for ptracers
840    o new package prifiles:
841      code to compute profile-based cost by Gael Forget
842      (modifs in ecco, ctrl, autodiff)
843    o Benign bug fix in initialization (spotted by M. Mazloff) of
844      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
845    
846    checkpoint58c_post
847    o adjoint: finish NLFS adjoint and provide reference output in
848      verification/global_ocean.90x40x15/results_ad_nlfs
849    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
850      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
851      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
852      with SEAICE_CGRID defined.
853    o move calendarDumps from "data" to "data.cal" and clean-up the code
854      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
855    o add useEXF & useCAL flags (for now, set in hard-coded way)
856    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
857      (were missing in NH mode, and wrong in quasihydrostatic mode).
858      waiting for Chris updated version of calc_gw to add those CALLs.
859    o fix bug in quasihydrostatic S/R ;
860      add a test for this option: global_ocean.90x40x15.qshyd
861    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
862      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
863    o add on/off flag useOffLine for package OFFLINE
864    o seaice:
865      - modify advection so that it works also on the C-grid
866      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
867        problem in multi-tile runs with C-grid
868      - add flags for clipping ice velocities and/or masking solver forcing
869      - fix drag (ocean on ice) formulation and a bug that caused noise in the
870        C-grid solver
871      - added a few comments to seaice_diffusion.F
872      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
873        are now exclusive)
874      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
875        required re-ordering the code a little:
876       + make DAIRN global variable (defined in SEAICE)
877       + move computation of the viscosities eta and zeta into a new separate
878         routine (because I need to recompute them in seaice_ocean_stress.F)
879    
880    checkpoint58b_post
881    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
882      update output.txt of exp. aim.5l_cs.thSI
883    o various mnc cleanups and improvements:
884      + shrink lookup tables by factor of ~4
885      + better error reporting when running out of lookup space
886      + able to handle longer path/file names (up to 500 chars)
887    o adjoint:
888      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
889      - TBD: "hidden" mom_vecinv recomp. in dynamics
890    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
891     (allow to differentiate between forcing components using new integer flags:
892      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
893     and add new flag to put Dissipation tendency out of Adams-Bashforth.
894    o ecco
895      - enable trend removal from SSH anomaly obs.
896    o adjoint
897      - a fix for PmEpR when #undef EXACT_CONSERV
898      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
899      - try to fix "hidden" recomp. in forward_step for NLFS
900        (NLFS seems broken sometimes after I checked it in)
901    o seaice:
902     - add c-grid version of the dynamic solver:
903       + three new routines that are the c-grid substitute lsr, dynsolver
904         and ostres
905       + put a few fields that were local to dynsolver into global common
906         blocks, so that I can move the computation of stresses etc into
907         seaice_lsr (saves coding but may break the adjoint).
908     - replace more hardwired parameters by runtime parameters
909     - add ice masks that mask the rhs of the implicit solvers where there
910       is no ice (commented out in seaice_dynsolver, because i am not sure
911       if this works properly), eventually this should replace the clipping
912       of ice velocities in seaice_dynsolver to +/-40cm/s.
913    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
914      include it only where its needed
915    o move balancing of fluxes before the call of external_forcing_surf
916    o seaice:
917      - correct units of turning angles (now they are really in degrees)
918      - move computation of GWATX/Y out of main routine into dynsolver
919      - initialize GWATX/Y in seaice_init
920    o Apply mask on Fresh-Water flux (needed for SSH forcing).
921      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
922    o seaice: add runtime flags for turning angles (default to zero)
923    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
924      and trend from exf forcing and ctrl control adjustments
925    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
926      (since checkpoint57x_post)
927    o change the default rotation period to 86164.s = the Earth rotation
928    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
929      and based on a reference stratification. Tested within hs94.cs-32x32x5.
930    o seaice advection: add code for choosing between the default (2nd order
931      central differences) and multiDim advection schemes provided by
932      pkg/generic_advdiff
933    o seaice:
934      - removed all references to SEAICE_GRID.h fields from
935        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
936        (cubed-sphere configuration will change a little)
937      - grid computations in seaice_init are obsolete now.
938      - cleaned up code a little so that is easier to read (hopefully).
939      - added new (better?) discretizations of default advection and diffusion
940        (turn on with SEAICEuseFluxForm)
941      - replace 1 in 3d global fields by kSurface in growth.F
942      
943    checkpoint58a_post
944    o seaice:
945      - bug fix in advect.F
946    o shelfice:
947      - separate shelfice load anomaly from pload (breaks with time
948        dependent forcing), => introduce constant field shelficeLoadAnomaly.
949        Its default is 0., but it may be computed more cleverly from (unknown)
950        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
951        done offline. A good approximation of the pressure load anomaly is
952        necessary to avoid large initial adjustment processes underneath
953        deep-reaching shelfice.
954      - small fix in ISOMIP shelfice_thermodynamics
955      - add more sophisticated thermodynamics of Hellmer (1989), this is
956        now the default
957      - give a few constants more intuitive names
958    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
959      if bulk formulae are used in long integration (especially EmPmR). Turn
960      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
961      if balancePrintMean, the imbalance that is substracted is printed to
962      STDOUT.
963    o fix bug (typo) in obcs_apply_eta.F
964    o add a new package shelfice which enables us to model the circulation
965      underneath shelf-ice with draughts of hundreds of meters.
966     - works
967     - to do: + include improved thermodynamics
968              + check whether kSurfC (from model/inc/SURFACE.h) can be used
969                instead of new field kTopC
970              + can we use topoFile, Ro_surf and existing code in ini_depth.F
971                instead of new field R_shelfIce and new code in ini_depth.F
972                and ini_mask_etc.F?
973              + adjust vertical mixing schemes?
974    o seaice pkg:
975     - add a cpp-flag to include a simple formula for a salinity dependent
976       freezing point of sea water at the surface
977     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
978       meridional stresses are now different (and hopefully correct)
979    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
980       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
981       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
982    o pkg/diagnostics: add options and parameters for regional-statistics
983       diagnostics ; define regions by reading a region-mask from a file
984       (might add other options later)
985    o pkg/bulk_force:
986     - add option and parameters to use AIM surface-flux formulae.
987     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
988       others forcing fields (defined in PARM05, parameter file "data") are loaded
989       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
990     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
991     - use the right EXCH call for uwind,vwind (to work on CS-grid).
992     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
993       and parameters (note: calcWindStress replaces .NOT.readwindstress).
994     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
995    
996    checkpoint58
997    o add "--embed-source" option to genmake2 which, when the supporting
998      tools can be compiled (as determined by genmake2) will turn on the
999      embed_files package which then embeds the entire MITgcm source code
1000      (*.[fFhc] + Makefile) used for the build within the executable
1001      - requested by CNH but off by default
1002      - adds a paltry <9MB to the mitgcmuv executable in most cases
1003      - only writes the output when useEMBEDSRC in eedata is true
1004    o clean up 3-dim. relaxation codes:
1005      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1006      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1007      * Thanks to Tom Haine for testing!
1008    
1009    checkpoint57z_post
1010    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1011      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1012    o fix the pickup behavior for obcs in combination with ptracers
1013    o fix a bug in ptracers_external_fields_load
1014    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1015      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1016    o transfered surface NH pressure to eta field (if exactConserv).
1017    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1018         and update lab_sea output.txt file.
1019    o completing 3-dim. relaxation code: additional term
1020         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1021      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1022      * At compile time, in "EXF_OPTIONS.h" set
1023          #define  ALLOW_CLIMTEMP_RELAXATION
1024          #define  ALLOW_CLIMSALT_RELAXATION
1025      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1026          tauThetaClimRelax3Dim = 15552000.0,
1027          tauSaltClimRelax3Dim  = 15552000.0,
1028      * 3 cases:
1029          1) Use a constant-in-time 3-dim. field
1030          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1031          3) Real-time relax. to time-evolving prescribed field
1032    o Adding Laplacian-type smoothness constraint on
1033      initial and boundary (forcing) controls (ic, bc)
1034      * enable at compile-time via
1035        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1036      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1037      * Absolute scale somewhat unclear so far
1038      * no area weighting was included since no other cost term does so far
1039    
1040    checkpoint57y_post
1041    First step for a NLFS adjoint
1042    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1043    o new init. routines for calc_r_star, calc_surf_dr
1044    o still need to deal with ini_masks_etc
1045    o testreport seemed happy
1046    checkpoint57y_pre
1047    
1048    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1049    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1050    o add new offset feature to offline pkg (plus minor cleanup)
1051    o cfc fixes for final year of integration
1052    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1053      be in GCHEM_OPTIONS).
1054    
1055    checkpoint57x_post
1056    o fix testreport Pb in multiple test experiment.
1057    o cleanup our namelist syntax in verification:
1058      - make it more F95 standards compliant (some work still needed)
1059      - allows the vast majority of our tests to work with gfortran
1060    o Non-Hydrostatic:
1061     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1062     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1063    o Allow to apply AB on T,S rather than on AB(gT,gS):
1064     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1065     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1066       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1067     - need a "clever" read_pickup to restart from the other AB formulation
1068    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1069    o remove some unused variables (reduces number of compiler warnings)
1070    o adjoint
1071      * Disable useVariableViscosity for adjoint for time being
1072        (there are a number of extensive recomputations)
1073      * Initialize certain variables needed for adjoint
1074    
1075    checkpoint57w_post
1076    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1077                 fix the singleCpuIO RS version of MDSWRITEFIELD
1078       and add a WARNING if using globalFiles=T with multi-processors.
1079    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1080      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1081    o tracer advection scheme:
1082      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1083       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1084       was not very convenient).
1085      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1086       (further tests needed for the implicit DST & Flux-Limiter schemes).
1087    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1088      and sRef for convenience, handy, when you want to initialize
1089      ptracers in a large domain with a constant non-zero value. Also,
1090      untangle ptracers_init.F a little.
1091    
1092    checkpoint57v_post
1093    o change dome exp. to use variable viscosity in side-drag terms.
1094    o remove all the files from the cfc_offline test since they are now
1095      incorporated into tutorial_cfc_offline which has been producing
1096      identical results for a few days of testing
1097    o add new parameter: sideDragFactor to enable half-slip-side BC
1098      and change side-drag S/R to use viscosity from mom_calc_visc
1099      (can switch back by setting sideDragFactor=0.); affects results at
1100      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1101       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1102    o vorticity & strain are now computed without masking, to account for
1103      no-slip-side BC in variable viscosity calculation ; mask is applied
1104      anyway later on, before computing advection/coriolis terms.
1105    o modify exp4 to test new obcs support for reading from external files
1106      and for passive tracers
1107    o fix behavior of ptracers_monitor when monitor output is written to a
1108      netcdf-file; still not independent of monitor.F (writes in the same
1109      file).
1110    o change default value of tRef (put a uniform, meaningful value for ocean
1111      & atmos) and initialize sRef (was missing, as Martin mentioned).
1112    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1113      to be proportional to enstrophy dissipation length.  Thus,
1114       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1115      This is now consistent with Smagorinsky and with the manual.
1116    
1117    checkpoint57u_post
1118    o OBCS and PTRACERS: add open boundary support for passive tracers
1119      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1120        OB-values from file; this is not different from the way theta and salinity
1121        are treated
1122      - however, Orlanski-radiation conditions are not supported, and the model
1123        will stop if you use pTracers and Orlanski at the same time.
1124      - beefed up the rountine obcs_external_fields_load: now only those open
1125        boundary values are overwritten with values from files for which there
1126        are really files, otherwise the OB-fields remain untouched. This makes
1127        it possible to use different OBs at different ends of the domain (as
1128        with EXF)
1129    o reduce number of exch calls in shap_filt (s2).
1130    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1131      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1132    
1133    checkpoint57t_post
1134    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1135    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1136      same truncation, independent of the face number: affects affects several
1137      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1138    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1139      note that biharmonic viscosity + no-slip was not tested in any experiment.
1140    o fix bug in non-linear free-surf side-drag ; generate new output for
1141      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1142    o make mnc honor the writeBinaryPrec flag for most kinds of output
1143    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1144    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1145      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1146    o add brackets in multi-terms sum to get same truncation, independent of
1147      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1148      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1149    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1150      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1151      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1152      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1153      Suggested values of viscosity parameters found in mom_calc_visc.
1154      Many new viscosity diagnostics available.
1155    
1156    checkpoint57s_post
1157    o Add clearing-house for viscosity calculations, mom_calc_visc and
1158      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1159      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1160      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1161      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1162      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1163      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1164      ViscAhStrain and viscAhTension are now retired.
1165    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1166    o In response to JMC's bug report, genmake2 now ignores any soft-links
1167      that it finds in the *current* directory when searching for files.
1168      Soft-links found in any other source directories will still work as
1169      they did before.
1170    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1171      a C routine to unlimit the stack size
1172    o mnc-ify pkg/aim snapshot vars
1173    o mnc-ify pkg/land as requested by Daniel
1174    o various changes to mnc including:
1175      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1176      - output can now be grouped so that all files within a group
1177          change the ITER portion of their names in lock-step together
1178      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1179          and works with both EXCH1 and EXCH2 (but needs more testing)
1180      - writing works for all verification test cases w/ g77 on Linux
1181    
1182    checkpoint57r_post
1183    o make MNC variable initialization happen earlier
1184    o add diagnostics for (almost) each term of the momentum Eq.
1185    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1186    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1187    o remove MINIMAL_TAVE_OUTPUT option ;
1188      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1189    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1190      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1191    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1192    o add time-dependent SST, SSS control
1193    o cost terms in ecco/ modularized (new cost_generic.F)
1194    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1195    o new infrastructure for seaice model vs. obs misfits in seaice/
1196      * driver from the_main_loop.F is seaice_cost_driver.F
1197      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1198      * gradient check in Exp. 6a of natl_box_adjoint/
1199    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1200      (see README file)
1201    
1202    checkpoint57q_post
1203    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1204    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1205      - bug was reported by Jean-Michel and Ian Fenty
1206    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1207      update exp. cpl_aim+ocn output.
1208    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1209      Needed for high-res. runs with large global files
1210      to be able to limit tapelev size
1211    o Changed some tests for adjoint:
1212      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1213      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1214      * global_ocean.90x40x15/ back to default 3-level checkpointing
1215    o Modifications to enable scripted COMMON to MODULE conversion
1216      * verification/OpenAD/code/ has necessary scripts and description;
1217      * converts, compiles and runs successfully;
1218    
1219    checkpoint57p_post
1220    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1221    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1222      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1223    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1224    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1225      (was already the case for dissipation with mom_vecinv,
1226       and also the case for grad.PhiHyd when staggered-timeStep)
1227      This will allow to put dissipation out-off the AB time-stepping.
1228     Unfortunately, affects truncation error. Update output of exp. that "fails"
1229      (cg2d matching number) and leave the others for later: front_relax(10),
1230      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1231      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1232    
1233    checkpoint57o_post
1234    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1235      (2) its ready to be documented during the 20050801 DocFest
1236    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1237      for ideal_2D_oce and lab_sea on linux_ia32_g77
1238    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1239      in global1x1_tot/code_seaice_adj to access indices 32, 33
1240      (worth another tag)
1241    
1242    checkpoint57n_post
1243    o adding precip control xx_precip 32
1244    o adding swflux control xx_swflux 33
1245    o Replacing 10 forcing penalty cost routines by 1 generic.
1246    o Implementing partitioning in time-mean and variable adjustment
1247      for atmos. state.
1248    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1249    o in natl_box_adjoint:
1250      * updated exp 1 to 10
1251        (but does not have time-mean vs. variable split results yet)
1252    o updated global1x1/*_seaice_adj/
1253      to incorporate latest changes
1254    o enable useSingleCpuIO for mdsio vector routines
1255      (applies in particular to tapelev I/O)
1256    o removed inefficient K-loop in all active_file*control*.F
1257    
1258    checkpoint57m_post
1259    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1260      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1261    o pkg/exch2: filling of face-corner halo regions is optional
1262      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1263    
1264    checkpoint57l_post
1265     tag before updating tutorials (pre-release-2)
1266    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1267       for output and interpolation of input fields onto model grid)
1268    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1269       Affects results of exp. rotating_tank ; update output.txt.
1270    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1271          and taking the square quantity and/or using a fraction-weight field.
1272    o fix aim_diagnostics_init.F mate numbers.
1273    o add mnc output capability to diagnostics/diagstat and update
1274      our cvsignore files for the ACSII output generated
1275    
1276    checkpoint57k_post
1277    o lab_sea now uses diagnostics package and provides a suite of
1278      new EXF diagnostics output.
1279    
1280    checkpoint57j_post
1281    o exf
1282      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1283        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1284        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1285      * extended diagnostics output
1286        - now includes all EXF variables
1287        - hs, hl moved to common block
1288        - separate S/R for diagnostics, called after ctrl vector is added
1289        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1290        - EXFqnet contains true Qnet (i.e. includes qsw)
1291      * updated verif. lab_sea, global_with_exf
1292      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1293        to ensure that diagnostics sees a true EXFqnet
1294    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1295    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1296      several times with different frequencies.
1297    o mnc-ify the thsice package as requested by Daniel Enderton
1298      - the monitor--MNC output needs work
1299      - many attributes need to be added (most are currently blank)
1300    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1301      - many attributes need to be added (most are currently blank)
1302    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1303    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1304    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1305      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1306         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1307    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1308     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1309    
1310    checkpoint57i_post
1311    o Diagnostics package was changed: diagnostic allocation is now deactivated
1312      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1313    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1314      add 1rst Order upwind vertical Shear.
1315    o add a quick fix for A/B checkpointing in OFFLINE mode
1316    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1317      end-run around the C/Fortran linking horror in eesup/src/timers.F
1318    o added pkg/runclock: allows user to terminate run based on wall clock
1319    o added non-hydrostatic scaling parameter: nh_am2
1320    o pkg/my82: futile attempt to make results compiler-independent by adding
1321      some "_d 0", etc. no effect.
1322    o for mnc output, fill the 'T' coordinate var with myTime and create a
1323      separate 'iter' variable for iteration count
1324    o pkg/diagnostics:
1325      add new capability: output of Global/Regional & per-level statistics ;
1326      tested against monitor output (including land & thSIce) on various exp.
1327    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1328    
1329    checkpoint57h_done
1330      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1331      data.diagnostics, data.gchem, data.ptracers) is done.
1332    
1333    o pkg/diagnostics: prepare for Global/Regional statistics.
1334      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1335    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1336      and rename it: DIFFERENT_MULTIPLE
1337    
1338    checkpoint57h_post
1339    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1340    o pkg/diagnostics: change output frequency, now in seconds (instead
1341      of Nb of iterations). This requires to change data.diagnostics.
1342    checkpoint57h_pre
1343    
1344    o in mnc, let the user create the output dir if both mnc_outdir_date
1345      and mnc_outdir_num are false
1346    o add fflags() to pkg/diagnostics which allows one to specify, on a
1347      per-file basis, the file precision [default behavior is unchanged]
1348    o added diagnostics to pkg/kpp, including computation of mixed layer
1349      depth based on a temperature/density criterion
1350    o updated verification/natl_box to test the new pkg/kpp diagnostics
1351    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1352    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1353    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1354      not mnc -- this mistake was found by JMC and is now corrected
1355    
1356    checkpoint57g_post
1357    o add Adams-Bashforth 3rd Order time stepping:
1358      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1359      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1360    checkpoint57g_pre
1361    
1362    o make lambda[Theta,Salt]ClimRelax spatially varying
1363      (default remains spatially uniform constant based on tau)
1364    o added new control variables
1365      * init. uVel, vVel, etanN
1366      * lambda[Theta,Salt]ClimRelax
1367    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1368      (suggested by G. Forget)
1369    
1370    checkpoint57f_post
1371    o add parameter "baseTime" = model base time = time at iteration zero
1372      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1373      account for baseTime shift
1374    o move Coriolis arrays from PARAMS.h to GRID.h
1375    checkpoint57f_pre
1376    
1377    o mnc-ifying the seaice package
1378    o introduced an alternative length scale calculation for use in the limiting
1379      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1380    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1381    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1382      as well as grad(vort3).  Made it compatible with both approximate form
1383      for the cubed sphere and full form of these gradients.  Added flag
1384      useFullLeith to select between approximate and full form.  
1385    o add "d0" in getcon.F to reduce differences between compilers/platforms
1386      update output.txt of exp. fizhi-gridalt-hs
1387    o change port_rand funtion to allow to set the seed.
1388    o fix obscure MNC bug involving conversion between reals and integers
1389      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1390        new version is now more standards-compliant
1391    o adjoint-related modifications
1392      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1393      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1394      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1395    
1396    checkpoint57e_post
1397    o Adding eddy stress controls a la Ferreira et al.
1398    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1399    
1400    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1401      update output.txt of exp. fizhi-gridalt-hs
1402    o add more "Z" dimensions and associated coordinate vars to MNC
1403    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1404    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1405      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1406      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1407      months and years.  Requires pkg/cal.
1408    o diagnostics: add pickup functionality
1409      - off by default for backwards compatibility
1410      - current version only uses MDSIO -- MNC will be added
1411    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1412    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1413    
1414    checkpoint57d_post
1415    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1416    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1417      output from the diagnostics package
1418    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1419    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1420      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1421    o add coordinate variables to the MNC output from the diagnostics package
1422    o change MNC-flags default value: true when useMNC=TRUE
1423    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1424      the ability (off by default) to read the grid information using MNC
1425    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1426    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1427    o do snap-shot diagnostics at the middle of the time-interval (instead of
1428      at the end).
1429    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1430      new test for AIM with thSIce + slab-ocean
1431    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1432    o move state variable diagnostics to the beginning of the time step ;
1433      (note: still needs some work specially for snap-shot diagnostics)
1434      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1435    
1436    checkpoint57c_post
1437    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1438    o generate new output.txt files on faulks with g77 & the new -ieee option
1439    checkpoint57c_pre
1440    
1441    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1442      update output.txt of exp. global_ocean.90x40x15
1443    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1444      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1445    o add saltFlux(+File) forcing capability with periodicExternalForcing
1446    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1447    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1448    o improvements for the MNC output from DIAGNOSTICS:
1449      - correct handling of the unlimitied dimension
1450      - all dims now have associated coordinate variables
1451      - variables located at U, V, and Corner ("Z") points are now written
1452        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1453        *all* data points are output
1454    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1455    o added pkg/seaice/seaice_monitor.F
1456    o mdsio_readfield.F can now read files visible only to master MPI process.
1457    o pkg/seaice: some test code for ice-modified ocean stress
1458    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1459      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1460      spurious negative numbers for precipitation and humidity.  Will cause
1461      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1462    o pkg/ctrl/
1463      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1464        May be enabled via doPackDiag
1465      *  introduce z-scaling of
1466         + gradient (doZscalePack) and
1467         + control (doZscaleUnpack)
1468    o pkg/mdsio/
1469      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1470      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1471    
1472    checkpoint57b_post
1473    o simplify options in diagnostics_fill arguments (remove weird combinations)
1474    o fix MNC coordinate variables so that they now contain per-face index
1475      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1476      general, EXCH2 grids are only aligned to a "local" coordinate system
1477    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1478    o Implement instantaneous output within pkg diagnostics:
1479      setting a negative frequency in data.diagnostics produces
1480     "snap-shot" output (as opposed to time-average if freq > 0)
1481    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1482      NOTE: change ptracer diagnostics name: use 2 characters to work with
1483            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1484    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1485      becomes the coordinate variable for the 'T' dimension
1486    o add CF-style coordinate variables to MNC
1487      - just a first cut:  numbers are meaningless on the cubesphere and
1488        missing along the T axis but otherwise it works!
1489    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1490    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1491    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1492      this is based directly on what the model compute, so that the content of
1493      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1494    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1495    o clean up build options files for SunOS, in particular
1496      - remove -traditional from xmakedepend
1497      - change -xarch=v9 to -xarch=native for f77
1498      - restore use of make (not gmake)
1499      - add CC=gcc if using g77
1500    o changes per discussion of AM, JMC, & EH3 today:
1501      - move redundant "grid" variables out of "state" -- in preparation of
1502        creating proper CF-style coordinate variables and in recognition
1503        that any/all grid variables can be easily copied (eg. w/NCO) from
1504        the grid files into any of the other NetCDF files
1505      - *always* output grid variables with MDSIO (this will eventually be
1506        changed)
1507      - output MNC grid file if useMNC is true
1508    o every instance of _END_MASTER() has been found and replaced with
1509      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1510      preprocessors
1511    o re-arrange diagnostics pkg initialisation:
1512     - allow each package to extend the available diagnostics list
1513     - add some checking and fix small problems (multi-threaded, ...)
1514     - new S/R diagnostics_fill (replace fill_diagnostics):
1515       look through the short list of active diag. (instead of the long list)
1516       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1517    
1518    checkpoint57a_post
1519    o this set of changes restores TAMC compatibility
1520      tested for global_ocean.90x40x15 adjoint on trough
1521      (what a pain)
1522    
1523    checkpoint57a_pre
1524    o some modifs in tools/build_options for sunos
1525    o call ctrl_pack for ctrl at end for optimcycle=0
1526    
1527    checkpoint57
1528    o add horizontal bi-harmonic viscosity for vertical velocity
1529      - new parameter viscA4W (defaults to viscA4)
1530      - affects only non-hydrostatic code
1531      - to be done: no-slip lateral boundary conditions
1532    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1533    o implement Implicit Vertical advection for pTracers
1534    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1535      (implemented also for implicit vertical diffusion & advection)
1536    o OBCS: extend application of tracer open boundary conditions
1537      to a strip beyond the boundary of width Olx/Oly
1538    o add call monitor to TAF set of required calls (flow directives)
1539      and include in natl_box_adjoint
1540    o untangle a few ifdefs related to cost, ctrl, autodiff
1541      untangel a few ALLOW_ECCO_OPTIMIZATION
1542    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1543      (theta2, salt2 in ecco_cost_weights)
1544    
1545    checkpoint56c_post
1546    o OBCS as control variables
1547      - update ctrl_ad_diff.list, obcs_ad_diff.list
1548      - remove balance of obcs controls from default
1549      - fix index bug nobcs in ctrl_init
1550      - fix dummy fields filen in ctrl_pack
1551      - add dummy weights for obcs
1552    o lsopt: comment out fort.94 output
1553    o optim:
1554      - remove unnecessary header files
1555      - adjusted namelists
1556      - add xerbla.F to Makefile
1557    o exf:
1558      - multiple modifications of exf_check_range
1559      - unit change in exf_init_runoff from [m/year] to [m/s]
1560    o mdsio:
1561      - i/o-vector change debugLevel from debLevA to debLevB
1562    
1563    checkpoint56b_post
1564    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1565      is called from DO_THE_MODEL_IO
1566      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1567      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1568      - clean up PTRACERS_WRITE_TIMEAVE a little
1569    o add another verification experiment that tests both the cfc-pkg and
1570      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1571      reactive tendencies treated inline with regular timestepping
1572    o testreport previously did a lousy job of comparing small numbers, so
1573      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1574      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1575      testreport.
1576    o ptracers_monitor: bug fix for MPI
1577    
1578    checkpoint56a_post
1579    o GCHEM: finish reorganizating the package
1580      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1581        (introduces another 3D-array for each passive tracer, but only if
1582        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1583        gchemTendency is not needed because the timestep is done separately)
1584      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1585      - GCHEM is now---more or less cleanly---separate from PTRACERS
1586      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1587        so clear to me how that should be done in a general way.
1588    o CFC: improve formatting of output in CFC_ATMOS
1589    o PTRACERS:
1590      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1591        that ALL experiments with ptracers enable can be checked. This makes
1592        GCHEM_MONITOR obsolete.
1593      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1594        monitorFreq
1595      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1596    o add PTRACERS (PTR0[1-5]) to testreport output
1597    o exf_check_range:
1598      * default changed to .TRUE.
1599      * will check values for niter0 if debLevA, every timestep if debLevB
1600      * STOP in exf_check_range if 'out of range'
1601      * range chosen generous to allow for potential extema
1602      TBD: a version with stricter range
1603           permitted range would be runtime parameters
1604    o GMredi:
1605      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1606      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1607      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1608    o GCHEM:
1609      - move call to GCHEM_FORCING_SEP, so that it is now called before
1610        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1611      - introduced a useGCHEM runtime flag and applied it everywhere.
1612      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1613        this flag is now only visible within GCHEM-pkg routines.
1614      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1615        be replaced by a 3D array that is computed before thermodynamics; for
1616        this, the tracer ID iTracer had to be included into the parameter list
1617        of ptracers_forcing
1618      - set up forward_step to call gchem_forcing, that will replace
1619        gchem_forcing_int in ptracers_forcing
1620      - cleaning up
1621    o small cleaning of exch2: remove files that are also in eesupp/src
1622    
1623    checkpoint56
1624    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1625    o mnc: cleanup "full" files--fixes out-of-memory problem
1626    o ECCO-GODAE
1627      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1628      * fully merged and updated from SIO code
1629        windstress sign change affects
1630        - exf_inscal_[u/v]stress
1631        - sign of xx_tau[u/v] adjustments
1632        - signs in cost_scat
1633      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1634      * natl_box_adjoint updated and compressed
1635      * 2-level checkpoint switch added
1636        (tested in EXP. 1 of natl_box_adjoint)
1637      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1638    o SVD
1639      * first complete, non-hacked version for SVD calculations
1640      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1641        performed via direct access files admtlm_vector.it????
1642        (via ctrl_[un]pack)
1643      * optimcycle is used for ARPACK iteration counter
1644        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1645      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1646        and add linear transforms where necessary
1647      * controls are initial/final SST, SSS (can be extended; need to check
1648        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1649    o mdsio: filename info to both stderr, stdout
1650    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1651      from sign change
1652    
1653    checkpoint55j_post
1654    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1655      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1656    o add consistent build directories and .cvsignore files to verification
1657    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1658    o make all subroutines 30 or less characters in length for certain older
1659      compilers to work (a thorough search only turns up two routines in
1660      pkg/ptracers)
1661    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1662      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1663    
1664    checkpoint55i_post
1665    o change arrays for total vertical diffusivity (2.D if explicit,
1666      3.D if implicit) ; each ptracer uses its own background value.
1667    o added mnc/NetCDF output capability to ocn_compon_interf
1668      - added bits to verification/cpl_aim+ocn so that it can run on
1669        ITRDA and other clusters without the mpirun "-wd" option
1670    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1671      configuration
1672    o give MNC the ability to create additional files rather than
1673      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1674      - the default is just less than 2GB which is a practical limit
1675        on many systems
1676    o Compute the non-local term using either KPP vertical diffusivity (=default)
1677       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1678    
1679    checkpoint55h_post
1680    o add verification test "vermix"
1681    o remove all the *_ioinc flags and replace with the single global
1682      outputTypesInclusive flag
1683    o allow to set a vertical profile of vertical diffusivity for T & S
1684    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1685    o useMNC moved from data.mnc to data.pkg
1686    
1687    checkpoint55g_post
1688    o Renaming carbon AD experiments to comply with testreport conventions
1689    o Updating adjoint of Held-Suarez hs94.1x64x5
1690    o Fixing directives for non-ECCO forward_step, after ECCO directives
1691      have been fixed to avoid recomp. of do_oceanic_phys
1692      Works well for global_ocean.90x40x15,
1693      but recomp. issue remains for carbon
1694    o Updating adjoint output for natl_box_adjoint after
1695      pkg/ecco has been modified (see taga c55d_post)
1696    
1697    checkpoint55f_post
1698    o rename to timeave_init_fixed
1699    
1700    checkpoint55e_post
1701    o some delicate re-shuffle of store directives to avoid one
1702      extra call of do_oceanic_physics
1703      affects ecco_the_main_loop.F, do_oceanic_physics.F
1704      checkpoint_lev1_directives.h
1705    o NB: this may break global_ocean adjoint temporarily,
1706      but it is clear how to fix it. Will do later, need this now.
1707    
1708    checkpoint55d_post
1709    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1710    o ecco_cost_weights is modified to 1x1 runs
1711    o modifs to allow observations to be read in as
1712      single file or yearly files
1713    o enable to read exf forcing fields as either
1714      single file or yearly files (flag useExfYearlyFields)
1715    checkpoint55d_pre
1716    
1717    o switch between 2-level and 3-level checkpointing
1718    o add ability of MNC to write local and "partial" (eg. 2D slices where
1719      the full 3D field is never actually stored) arrays to NetCDF files
1720      with the correct (that is, the complete multi-dimensional) set of
1721      array indicies
1722      - used in mom_vecinv() to write the diagFreq output
1723      - tested (demonstrated) in verification/aim.5l_cs
1724    o further mnc-ification
1725      - add verification/lab_sea to the list with mnc setups
1726      - fix undefined mnc v-names in cd_code
1727      - add kpp to mnc output (both snapshot and timeave)
1728    o non-hydrostatic code
1729      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1730        in calc_gw.F
1731      - defaults to viscAh
1732      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1733        friction or Leith) in non-hydrostatic mode, as long as there is
1734        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1735    o pkg/cost
1736      extend simple cost functions to treat time mean quantities
1737      (T,U,V) via cost_accumulate_state from cost_tile
1738    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1739        be 2 times larger than the minimum size the advection scheme requires.
1740        now get a perfect conservation of salt in advect_cs test-exp (updated)
1741    o GGL90 (Gaspar's TKE mixed layer)
1742      - add horizontal diffusion of TKE, requires exchanges in
1743        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1744        default. In OPA there is no horizontal diffusion of TKE but the
1745        mixing coefficients are computed from a horizontal average of TKE of
1746        6 points or so. I think that diffusion has a little more physical
1747        justification.
1748      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1749        was in vain)
1750      - mask tke-variable in ggl90_init
1751    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1752    o fix biharmonic diffusion on CS-grid.
1753    o more obcs stuff
1754      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1755        for reading boundary values. This routine is called from
1756        obcs_prescribe_read
1757      - updated obcs_check
1758      - changed sponge layer relaxation parameter units for days to seconds
1759      - turned off sponge layer by default
1760      - changed argument list of OBCS_CALC to myTime+deltaTclock
1761      - fixed about 35 bugs in obcs_external_fields_load
1762    
1763    checkpoint55c_post
1764    o obcs stuff
1765      - new runtime flags useOBCSprescribe, useOBCSbalance
1766      - re-arranged obcs_calc
1767      - moved exf_getobcs to obcs_prescibe_read
1768        obcs_prescibe_read is called after ORLANSKI stuff
1769        and independent of it (executable can contain all).
1770      - updated obcs_check
1771      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1772        These may be necessary only if tangential velocities are
1773        prescribed at OB, not sure, needs testing.
1774    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1775      which simplifies the calls and passes the ifc check-bounds test
1776    
1777    checkpoint55b_post
1778    o add a 2D scalar, Z location, exchange_2 routine.
1779    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1780      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1781      affects advect_cs results (for the wrong reason): update output.txt
1782    o use a more standard discretization for biharmonic viscosity ;
1783     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1784      affects results of dome set-up: update output.txt
1785    o fix gad_advection.F (CubedSphere part), back to version 1.23
1786    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1787    
1788    checkpoint55a_post
1789    o merged code to
1790      * prescribe/read time-dependent open boundaries
1791        (works in conjunction with exf, cal)
1792      * sponge layer code for open boundaries
1793      * each boundary N/S/E/W now has its own CPP option
1794        (healthy for the adjoint)
1795    
1796    checkpoint55
1797    o up-to-date adjoint of previous breaks
1798      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1799      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1800      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1801      - carbon: * remove tr1-related adjoint verification
1802                * add ptracer as control variable
1803    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1804      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1805    
1806    checkpoint54f_post
1807    o in verification/carbin/ remove experiment related to
1808      ALLOW_PASSIVE_TRACER (array tr1 etc)
1809      code_ad/ input_ad/ results_ad
1810    
1811    o add two new packages
1812      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1813        + subject to optimization (memory)
1814      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1815        + subject to reordering (many GOTOs in the original code)
1816        + so far opps is called for every (i,j) point, and then operates in
1817          the vertical; one may want to reorder the scheme in order operate in
1818          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1819          fields)
1820    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1821      - all verification tests compile and run with linux_ia32_g77
1822      - defaults are compatible with current input files--nothing
1823        should change if you were not previously using MNC
1824      - MNC output has been added in numerous places (eg. timeave)
1825        but there are still a few writes not yet do-able with MNC
1826        (this is in progress)
1827      - flags now allow for either/or/both use of MDSIO and MNC and
1828        documentation will soon follow
1829      - numerous small formatting cleanups for ProTeX
1830    o add version info (via BUILD_INFO.h) to MNC and stdout
1831    
1832    checkpoint54e_post
1833    o add two new packages
1834      - pp81 (Packanowski and Philander, 1981), Richardson number and
1835        stratification dependent mixing
1836      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1837      - these scheme operate in a similar manner as KPP (without ghat, of
1838        course), however there is only one diffusivity that is used for both
1839        temperature and salinity (and passive tracers)ç
1840    o add offline package
1841    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1842      provided by Stephanie Dutkiewicz
1843    o genmake2: add ability to search for C compilers and cleanup test output
1844      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1845    
1846    checkpoint54d_post
1847    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1848    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1849      leading to additional shift by 5 days each year of integration
1850       (i.e. leading to considerable offset over the years)
1851    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1852    o start with no AB and no initial filtering (staggerTimeStep):
1853      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1854    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1855      (external loading & cpl import/export stay in forward_step.F)
1856    o update coupling interface to work with new staggerTimeStep
1857    o change MDSIO ptracers_pickup.
1858    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1859    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1860    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1861    
1862    checkpoint54c_post
1863    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1864      this affects (truncation error) output.txt of test-exp:
1865       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1866    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1867    o change Qnet to always be the net heat flux, (+upward).
1868      affects (truncation error) output of natl_box exp.: updated
1869    o define the max number of passive tracers in PTRACERS_SIZE.h
1870    o start to test mnc routinely in exp0
1871    o add sea-ice loading (sIceLoad) as a new forcing field.
1872    
1873    checkpoint54b_post
1874    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1875       impressive on Altix and Opteron systems)
1876    o diagnostics can now write NetCDF files through the mnc package
1877    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1878    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1879    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1880      affects (truncation error) output of lab_sea & natl_box exp.: updated
1881    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1882    
1883    checkpoint54a_post
1884    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1885    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1886    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1887    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1888      + internal_wave (shift in writing cg2d_ini_res)
1889    checkpoint54a_pre
1890    
1891    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1892      - modified verification/lab_sea and natl_box_adjoint accordingly
1893    
1894  checkpoint54  checkpoint54
1895  checkpoint53g_post  checkpoint53g_post
1896  o prepare splitting of thermodynamics: store convect.counter in common block  o prepare splitting of thermodynamics: store convect.counter in common block

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