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revision 1.198 by edhill, Tue Oct 28 22:57:59 2003 UTC revision 1.955 by gforget, Sat Feb 9 23:31:18 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/ctrl:
8      - Rewrite of ctrl_map_ini_ecco.F,
9        introducing a generic routine (ctrl_map_ini_gen.F).
10      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
11    checkpoint59n
12    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
13      number in dedicate array "hdiag":
14      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
15        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
16      - many small changes (integer format) for large number of diagnostics
17      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
18        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
19    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
20      usingSphericalGrid, this allows to define the rotated grid coordinates
21      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
22      geographical coordinates according to the inverse of the rotation defined
23      by the Euler angles, so that Coriolis parameter and online-interpolation by
24      exf works with the geographical coordinates on XC/YC/XG/YG.
25      Naturally, this feature does not work with all packages, so some
26      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
27      profiles), because there the coordinates are assumed to be regular
28      spherical grid coordinates.
29    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
30      - introduce isopycnal diffusion coefficient control.
31    o tools/adjoint_options:
32      - additional control vector components.
33    o pkg/mnc: have mnc create marginally meaning full coordinate variables
34      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
35    o pkg/mypackage:
36      - add example of read/write pickup for state-var ;
37      - add entry points to the main code for state-vars diags & write-pickup.
38    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
39      transitions for useExfYearlyFields
40      - add new subroutine that determines the file to read from for
41        use*YearlyFields = .TRUE. and .FALSE.
42      - add a verification experiment to global_with_exf that tests
43        useExfYearlyFields with USE_EXF_INTERPOLATION defined
44    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
45      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
46      subroutines (which could be generated from a template, because they are
47      almost identical), for now they are included in obcs_prescribe_read.F for
48      simplicity
49    o pkg/exf:
50      - add a little more diagnostic to exf_interp_read (in analogy to
51        mds_read_field, can be turned off with debugLevel < debugLevA=1)
52      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
53        ugly but fast by unrolling short inner loops, inserting a unroll=8
54        directive in routine lagran, and splitting a loop and making do while the
55        outermost loop (the latter requires the intoduction of index arrays)
56    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
57    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
58      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
59    o verification/seaice_obcs: updated for restart test and latest options
60    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
61      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
62      for now this is only available for the C-grid code and also within
63      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
64    
65    checkpoint59m
66    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
67      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
68    o gad_som : fix flux output (& diagnostics) to have same units as other  
69      advection scheme fluxes (was previously multiplied by deltaT).  
70    o added verification/seaice_obcs both to test seaice open boundaries
71      and to provide an example matlab scrpt for generating them
72    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
73    o pkg/salt_plume: clean up salt_plume_frac.F to
74      remove redundancy in PlumeMethod 1 and 4
75    o pkg/kpp: added saltplume diagnostics
76    o pkg/obcs and pkg/seaice:
77      - do not set uice and vice to zero when OB*icefile are unspecified
78      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
79      - moved seaice tracer obcs after call to seaice_growth
80    o pkg/salt_plume: added various options for salt plume depth
81      criterion and for vertical distribution of the salt
82    
83    checkpoint59l
84    o pkg/ptracers: new version of ptracers pickup:
85      read meta file and write only fields which are needed to restart.
86      ( same logic as main pickup file ; also using pickupStrictlyMatch )
87    o pkg/seaice:
88      - add timescale for melting due to warm mixed layer as a means of
89        setting SEAICE_availHeatFrac more conveniently
90      - add a CPP-flag/runtime parameter check for flooding algorithm
91      - reformulated availHeat in seaice_growth.F to be independent of AREA
92    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
93      unit changes
94    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
95    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
96      SX vector computer.
97    o pkg/seaice:
98      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
99        seaice forcing fields can now be read only through pkg/exf
100      - removed some unused halos
101    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
102    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
103      or U/VICE from U/VWIND before computing U/VSTRESS
104    
105    checkpoint59k
106    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
107      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
108    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
109      all experiments pass when compile with un-initialised var. checking option.
110    o added pkg/salt_plume
111    o script to test restart (for now, in MITgcm_contrib/jmc_script)
112    o pkg/seaice: new read/write pickup version.
113      read meta file and write only fields which are needed to restart.
114      ( same logic as main pickup file ; also using pickupStrictlyMatch )
115    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
116    o lab_sea.hb87: modify the domain & update output.hb87.txt :
117      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
118      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
119      process. Fixed here by closing the domain at the Northern boundary.
120    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
121    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
122      a set of consecutive levels in/from a 3-D array.
123    o pkg/ptracers:
124      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
125      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
126    
127    checkpoint59j
128    o in pkgs: dic, obcs, offline, rbcs:
129      standard way to compute coeff. for time interpolation between 2 time reccords
130      which retains full precision (& make results less dependent on compiler).
131      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
132    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
133      packages instead of reading ice cover and wind speed separately
134    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
135     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
136      to allow to compile customized code before the update)
137    o cleaning-up:
138      - fix CPP instruction syntax in pkg/obcs
139      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
140        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
141      - fix some threads issue in IO parts.
142    o pkg/dic:
143      - add tons of "_d 0" (--> much better testreports !)
144       and then update outputs of tutorial_global_oce_biogeo
145    o pkg/mom_fluxform:
146      add a special version of momentum advection intended to conserve momentum
147      next to a bathymetry step or a coastline edge. (default = off = #undef)
148    o new read/write pickup version:
149      - for now, only implemented for main (mdsio) pickup file.
150      - write out only what is needed to restart; merge pickup_nh , pickup_ph
151        and main pickup together.
152      - read meta file; read only what is needed to restart; stop if a field
153        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
154        if it make sense (even if the restart is not perfect).
155      - if no meta file, assume that pickup to read corresponds exactly to
156        a pickup that would currently be written.
157      - read pickup written in the old format (until checkpoint59i) if it
158        recognizes an old meta file (no field-list).
159      - add a meta file in exp. which starts from a pickup: 2 cases:
160        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
161         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
162        b) a meta file describing the content of the associated pickup file
163         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
164    o pkg/mdsio & pkg/rw:
165      - new routine to read a meta file ; new set of routine to read
166        Multiple-fields file (with meta file).
167    o added open boundary conditions capability for seaice
168        HSNOW, HSALT, UICE, and VICE
169    
170    checkpoint59i
171    o adjoint:
172      * fix multiDimAdvection adjoint
173        (partial recomputation problem by TAF for fVerT(:,:,kDown)
174        and comlev1 size definition (maxpass vs. max. number of tracers)
175      * verification/global_ocean.90x45x15 adjoint now tests
176        NLFS and multiDimAdvection using DST3 (=30)
177      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
178    o pkg/kpp: add "_d 0" to real constant (if missing);
179      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
180      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
181    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
182      for internal parameters related to restart process (formerly from PARAMS.h)
183      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
184    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
185      as argument. (only atm2d & obcs write_pickup have not yet been updated)
186    o pkg/monitor:
187      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
188      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
189      - account for deep Atmosphere factor and density factor (anelastic)
190    o added open boundary conditions capability for seaice HEFF and AREA
191    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
192      thermodynamics
193      - requires a little reorganization, which affects the testreport results
194        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
195        so that now the conservative form is tested
196      - add a few comments
197    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
198    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
199    o add new diagnostics to seaice: advective, diffusive fluxes (only for
200      multidim-advection, for scheme 2 they are not filled) and transports,
201      thermodynamic growth rates
202    o change units of EmPmR (inside the code, + within coupling interface)
203      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
204      Affects results @ truncation level (cg2d match) and update output of
205       experiments: lab_sea(6), global_ocean.90x40x15(10),
206      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
207      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
208      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
209      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
210    
211    checkpoint59h
212    o pkg/exf:
213      - improve vectorization by moving if-statement out of loops in
214        exf_mapfields, exf_radiation
215      - exf_bulkformulae.F: introduce 2D fields and vectorize code
216    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
217    o testreport:
218      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
219        monitor & update offline_exf_seaice exp. output.
220      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
221    o pkg/seaice:
222      - bug fix in the evp solver: boundary conditions were affected be
223        masking of zMax/zMin (changes results)
224      - minor bug fix in boundary conditions in seaice_calc_strainrates
225        (changes results for no_slip)
226      - seaice_lsr.F: make interpolation of eta dependent on boundaries
227      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
228      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
229        stress formulation and no-slip boundary conditions
230    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
231      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
232    o pkg/seaice: a first HSALT time stepping equation has been checked in
233    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
234      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
235      without requiring DO-IF statements
236    o pkg/thsice:
237      use continuous power-law function for partition of energy between lateral
238      melting/freezing and thinning/thickening ; old code using step function
239      still available with #undef THSICE_FRACEN_POWERLAW
240      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
241    o testreport: change AD testing : check against results/output_adm.txt
242      using same scripts as for forward test.
243    
244    checkpoint59g
245    o adjoint testing: in preparation for changing testreport:
246      - output format: cost and grad written on separated lines
247      - ad output results in directory "results" (instead of "results_ad")
248    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
249    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
250    o pkg/ecco: allow user defined cost function contributions
251    o testreport:
252      Allow to choose (per experiment) the list of tested output variables
253       and the main variable (used to issue a pass/FAIL ) ;
254      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
255      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
256      Also modify printing of summary:
257       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
258       b) echo the list of tested variables in the individual summary.txt of
259          each experiment.
260    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
261      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
262      (but still depend on the tile decompostion of the domain).
263    o pkg/seaice: change a discretization detail to make the B-grid code
264      "more symmetric". This change is likely to remove all "ridges/leads" that
265      where quasi-aligned with the grid in B-grid solutions. It may also be
266      the solution to the stress coupling issues with the B-grid.
267    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
268      remove .cvsignore from input dir. (since testreport no longer run here).
269    o pkg/thsice:
270     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
271     - fix reshaping of sea-ice just after advection:
272       melt all the ice only if ice-volume is too small.
273     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
274       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
275     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
276    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
277      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
278    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
279      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
280      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
281      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
282      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
283      -> update output.txt
284    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
285     this affects truncation error: -> update output.txt of exp:
286      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
287      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
288    
289    checkpoint59f
290    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
291    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
292      a bounded range (in forward mode)
293    o pkg/ecco, ctrl, autodiff and mom_common:
294     internal parameter controls, completements of implementations
295    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
296    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
297      (not seem any difference in testing results).
298    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
299       at face corners.
300    o pkg/generic_advdiff:
301     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
302      loop range indices for computing vertical advection tendency
303      and do the calculation in the interior only (no overlap) ;
304      for now, only implemented for SOM advection (to save CPU time).
305     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
306    o exch2 adjoint
307      First set of changes:
308      - add exch2 hand-written adjoint templates
309      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
310        This will require cleanup in pkg/autodiff/*.F
311        (changed routines currently kept separate in verif. code/)
312      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
313        that used to hide exch2 or cubed-sphere specific code
314        (commented via 'cph-exch2')
315    o pkg/seaice
316      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
317    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
318       output of global_ocean.cs32x15.thsice .
319    
320    checkpoint59e
321    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
322      for B-grid vector (not yet tested) and C-grid vector (<- only used
323      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
324    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
325      (#ifdef ALLOW_SALT_PLUME)
326    o gather_2d/scatter_2d: removed halo regions
327    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
328      scheme and the corresponding test case (under front_relax dir). For now,
329      only available with Skew-flux form and not yet tested in realistic set-up.
330      adjoint: store directives updated, but gradient checks deteriorated,
331      so maybe GM/Redi adjoint is now broken.
332    o seaice adjoint
333      * add AREA, HEFF, HSNOW as control variable
334        (should not change lab_sea results)
335      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
336    o pkg/seaice:
337      * added computation of saltFlux in seaice_growth;
338        For time being, sea ice salinity is assumed constant
339        contribution of snow flooding to freshening of sea ice is neglected.
340        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
341        defaults to 0.0 in order to maintain backward compatibility.
342        Typical values for SEAICE_salinity are 4 to 10 g/kg.
343      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
344      * added SEAICE_availHeatFrac, which specifies fraction of surface level
345        heat content used to melt or grow ice
346      * commented out cap of HICE: it helps keep ice thinner
347      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
348      * applied OBCS T/S mask to HEFFM sea ice mask
349    
350    checkpoint59d
351    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
352     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
353     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
354    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
355     and change default value of parameter "GM_Small_Number";
356     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
357       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
358       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
359    o pkg/ecco: cost function when applying pkg/smooth to controls
360    o pkg/ctrl: add forcingPrecond run time parameter
361    o pkg/seaice:
362     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
363     - fix bug in metric terms of u-equation in LSR solver (implicit part),
364       changes verification/lab_sea
365     - rearrange implicit part of u-equation in LSR solver to make it easier to
366       read, understand, and debug. This causes changes at the truncation level.
367     - fix (serious) bug in the boundary conditions (sign error in the implicit
368       part) of the LSR solver. Changes all LSR results.
369     - fixed problem with HSNOW initialization to avoid thick snow when AREA
370       is initilized with small values - does not change lab_sea results.
371     - added HsnowFile initialization capability
372    o pkg/smooth: addition to model/src and pkg/ctrl so allow
373     initialization of pkg/smooth and application to control vector
374    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
375    o dependencies: pkg/profiles requires pkg/cal
376    o pkg/profiles:
377     - added option ALLOW_PROFILES_GENERICGRID
378         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
379         that interpolation information (grid points and coefficients) is provided
380         within the netcdf input files.
381         -> sample matlab scripts can be found in MITgcm_contrib/gael
382         that allow you to prepare netcdf input files.
383     - also modified: cleaner include statements, cleaner error print statements,
384       cleaner stops when error, and more tests of the netcdf input files consistency.
385    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
386    o pkg/seaice:
387     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
388       requires a new routine: seaice_diagnostics_fill.F
389     - make sure that seaice does not move if not forced (pressure replacement
390       method, Hibler and Ip, 1995), changes results
391     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
392     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
393       It is turned off by default (=-1.), because it changes the results.
394     - make it possible to read AREA from a file, too.
395    
396    checkpoint59c
397    o add S/R and diagnostics for oceanic mixed-layer depth
398    o move GMRedi call after all vertical mixing schemes (including KPP)
399    o pkg/thsice:
400     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
401      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
402    o pkg/obcs:
403     - bug fix for balance code
404    o pkg/seaice:
405      - allow values of SEAICE_elasticParm > 1
406      - add new parameter SEAICE_evpTauRelax as an alternative
407        to SEAICE_elasticParm
408      - make lsr boundary conditions free slip (by default), changes result
409      - add code for no slip boundary conditions for lsr
410      - set minimum of zeta to zero (and not 4e8) (changes results)
411      - add a cap on AREA after advecting AREA if seaice_growth is not called
412    o change calculation of Visbeck K:
413      - no longer depend on tapering scheme; instead, compute slope (limited
414        by GM_maxSlope). this is equivalent to what was comuted before with
415        clipping or linear tappering.
416      - fix vertical averaging (wrong by 1/2 level)
417      - leave the old version (but will not be maintained) within
418        #ifdef OLD_VISBECK_CALC / #endif
419      - update output of exp. ideal_2D_oce
420    o change error catch in calc_r_star to improve vectorization
421    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
422      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
423    o adjoint:
424      Re-organized adjoint checkpointing according to Matt Mazloff
425      (but with modifs/completions/cleanups)
426      Storing is now bundled into large arrays to optimized I/O
427      (and second step in cleanup of the_main_loop)
428    
429    checkpoint59b
430    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
431      - export/import (between ocean & coupler) fields needed for ocean DIC.
432    o pkg/seaice:
433      - get rid of three more exchanges seaice_calc_viscosities (required
434        different loop boundaries in seaice_lsr and seaice_ocean_stress)
435      - bug fix in seaice_ocean_stress (update of lab_sea required)
436      - reduce loop boundaries to necessary minimum also in seaice_evp
437      - go back to the old way of computing deltaC/Z as the adjoint likes that
438        better
439    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
440      passive tracer to an Age Tracer) + update output.txt
441    o pkg/exf:
442      - implement A-grid / C-grid selection for wind-stress input files.
443      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
444      for now, in exf_bulk_largeyeager04.F only :
445      - change implementation for case where windspeed + 2. components wind-stress
446        are read-in. AND use rhoConstFresh to convert evap.
447    o pkg/seaice:
448      - use correct EXCH_UV for wind-forcing (on A-grid).
449      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
450        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
451    o pkg/exf:
452      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
453      EXF_INTERPOLATION:
454      - merge global_with_exf/code version of exf_interp_read.F
455        to the main code ;
456      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
457        reading the file ; Important: This options needs to be defined to recover
458        previous code.
459        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
460      - no longer loose real*8 precision along the way when using exf_iprec=64.
461    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
462      - change discretisation of evp-solver in order to avoid another exchange
463        (changes lab_sea) and clean up a little
464      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
465        help the adjoint (this also changes the results slightly)
466      - add a few "_d 0" where they had been missing in seaice_evp.F
467      - cleaning up: remove unused seaice_calc_rhs.F
468    o pkg/exf: some cleaning-up:
469      - change various "constants" into runtime parameters
470      - cleaned-up Large&Yeager04 routine which should eventually
471        replace exf_bulkformulae.F (changed names of S/R and CPP)
472        and merged various ALLOW_ATM_WIND options
473     only used with thsice pkg (in thsice_get_exf.F):
474      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
475        which are used when useStabilityFct_overIce=TRUE (= the default)
476      - change default values of ice & snow emissivity and scale downward LW
477        by ice & snow emissivity.
478    o pkg/thsice:
479     fix few little problems, in thsice_calc_thickn.F:
480      - growth vertically (and not laterally) if iceFrac == iceMaskMax
481      - melt only laterally if hIce < hThinIce (as the comments say)
482      and in thsice_extend.F:
483      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
484      - start to form ice as soon as the minimum ice-volume is reachable.
485     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
486      and cpl_aim+ocn
487    o pkg/kpp
488     - move computation of surface related input fields to KPP into a new
489       subroutine kpp_forcing_surf.F
490     - remove wrong (within bi,bj loops) EXCH calls.
491     - little cleaning (add argument myThid in last position, cvs header ...)
492     - for now, fix conservation problem by exchanging KPPviscAz (may not
493       be the best fix)
494    o pkg/seaice
495     - check for inconsistent evp parameter/cpp-flag combination
496     - remove leftover errIO flat for obsolete name list error handling
497    o OpenAD
498     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
499    
500    checkpoint59a
501    o pkg/seaice: some parameter clarifications and a little bit of clean up
502    o pkg/thsice: rename run-time parameters:
503       himin       -> hIceMin
504       himin0      -> hThinIce
505       hihig       -> hThickIce
506       i0          -> i0swFrac
507       transCoef   -> bMeltCoef
508       frac_energy -> fracMelting
509      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
510       with default values (for now) that do not change the results.
511      remove old version of thsice vars advection in pkg/seaice.
512    o in FFIELDS.h:
513      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
514      - make pLoad & sIceLoad always available (but still only used if
515         ATMOSPHERIC_LOADING is #define).
516    o pkg/kpp: replaced _KPP_RL with _RL
517    o bug fixes for vertical diffusivity computations when both KPP and
518        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
519        are no longer updating the vertical diffusivity array
520        (passed as argument) but are (re-) setting those arrays.
521    o pkg/seaice: fix bug in evp solver, while doing that
522      - change (improve?) discretization of stress computations for both
523        cgrid-lsr and evp solver
524      - add a new routine to compute strain rates
525      - the above changes lab_sea results
526      - add no slip conditions for evp solver (off by default), lsr-version
527        may follow
528      - fix exchange for shear at Z-points (does not change lab_sea)
529      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
530        (to force the user to pick a time step since there is not "safe" way
531        of choosing it)
532      - add principal stress diagnostics
533      - rearrange fields for evp a little to avoid having to call a: too many
534        exchanges and b: exchanges for stress trensor components which we do
535        not have.
536      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
537        of evp, complete rewrite for lsr case (latter is does not yet work
538        in all cases)
539    o pkg/kpp: add code to have mixing in shelf ice caverns
540      - add myThid to all kpp routines (long overdue)
541    
542    checkpoint59
543    o pkg/exf:
544      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
545        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
546      - move exf header files from lower_case.h to UPPER_CASE.h ;
547        add missing cvs Header & Name
548      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
549      - add namelist param. selectStressGridPosition, exf_monFreq
550      - retire many _CLIM routines, and remove data.exf_clim
551        + params moved to data.exf
552        + climsst, climsss now handled by exf_set_gen, i.e.
553          climss?period=0 refers to constant field,
554          climss?period=-12 to monthly forcing
555      - split up namelists in data.exf
556    o pkg/seaice:
557      - remove seaice_exch and seaice_exch_uv
558      - remove superfluous exchange of theta
559      - add myThid to seaice_budget_ocean/ice
560      - add new interface for atmospheric wind forcing (C-grid only)
561        + new routine
562        + two new field (taux, tauy for stress over ice)
563        + removed one global field (DAIRN) for C-grid case only
564    o pkg/thsise
565      - 2nd set of modifs for thsice adjoint in conjunction with exf
566    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
567    
568    checkpoint58y_post
569    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
570      vertical diffusivity, similar to that in MOM4; turned on using
571      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
572      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
573    o Added capability for 3D specification of background vertical diffusion
574      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
575      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
576      "data" file that contains the 3D vertical diffusivity coefficients.
577    o ice dynamics (pkg/seaice) with thsice thermodynamics:
578      - add code within pkg thsice to advect & diffuse sea-ice fields
579      similar to (and will replace) what has been added in  seaice_advdiff.F,
580      but: - conserving Mass, Heat & Salt.
581           - better when using non-linear advection scheme (not yet fully tested)
582           - can also be used in atmospheric set-up (for now, only the diffusion).
583    
584    checkpoint58x_post
585    o IO option for global-file compact format:
586      - add options when generating topology (utils/exch2/matlab-topology-generator)
587      - add I/O capability (pkg/mdsio).
588      - adapt utils/matlab/rdmds.m to read this format.
589      for now long-line format not yet supported by pkg/mdsio (& exch2).
590    o shelfice: add a few diagnostics
591    
592    checkpoint58w_post
593    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
594      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
595      (and replace horiVertRatio in NH code).
596      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
597                         and tutorial_plume_on_slope (sensitive to truncation)
598    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
599      directly to drive seaice model (C-grid only)
600    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
601     - reintroduce computation of wind from stress,
602     - compute tau (in exf_bulkformulae.F) from windstress averaged to
603       mass points to avoid tau = 0
604     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
605    o rdmnc.m: make it work with "global" files created with gluemnc
606    o rdmnc.m : some improvements in dealing with singleton dimension
607      (tested on all testreport mnc output files).
608    o genmake2: disable pkg/profiles if netcdf test fails.
609    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
610    o move call to cal_readparms up to make calendar parameters/variable available
611      to all packages
612    
613    checkpoint58v_post
614    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
615      useDynP_inEos_Zc tested.
616    o pkg/exf: changes to properly interpolate/mask/scale initial fields
617    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
618      and portions thereof.  See read_cs.txt for description and examples.
619    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
620      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
621      following the great-circle arc between those 2 points.
622    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
623      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
624    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
625     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
626     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
627     - still needs work (not working with some options ; efficiency to improve)
628       and serious testing.
629     - use this scheme for temperature & salinity in 2 advection test exp.:
630       advect_xy & advect_xz, respectively.
631    
632    checkpoint58u_post
633    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
634    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
635    o testreport: add option "-skipdir" to skip some test.
636    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
637      momentum calculation.
638    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
639    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
640      remove checkpoint.F and the_correction_step.F (no longer used);
641      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
642    o add option (linFSConserveTr) to correct for tracer source/sink due to
643      Linear Free surface
644    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
645    o pkg/thsice: fix reading mnc-pickups
646    
647    checkpoint58t_post
648    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
649    o pkg/mdsio:
650     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
651       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
652       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
653     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
654     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
655       either MDS_READ_FIELD or MDS_WRITE_FIELD )
656     - new S/R (to replace MDSWRITEMETA), which allows to write more
657       informations (variable names, time ...) to meta files.
658     - modify rdmds.m to give back the meta file content.
659    o pkg/diagnostics: change vertical interpolation to be safer, and more
660       flexible (define p-levels to interpolate to in data.diagnostics);
661      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
662       diagnostic pointer.
663    o pkg/seaice: more cleaning up of seaice_growth, added many comments
664    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
665    o fix multi-category seaice:
666     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
667       SEAICE_MULTICATEGORY
668     - fix short wave heat flux
669    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
670       and allow to use EVP solver. Change forward lab_sea: test both EVP
671       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
672    o Initial check-in of lab_sea adjoint
673      (very similar to natl_box_adjoint/code_seaice)
674      * used C-grid and EVP solver
675      * used KPP, GM/Redi
676      * uses inAdExact=.TRUE.
677      * gradient checks fail for both ADM and TLM
678        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
679        f.d. gradients actually seem more problematic than ADM, TLM gradients;
680        issue is related to forward mismatch between g77 an ifort
681    o pkg/seaice: overhaul of thermodynamics
682     - growth.F and groatb.F are replaced by new routine seaice_growth.F
683     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
684     - move a few global fields out of SEAICE.h into seaice_growth.F and
685       make them 2D (FICE/QNETO/ ...)
686     - remove FO (it is the same as QNETO)
687     - introduce a few local fields to avoid modifying external fields such
688       as atemp, etc.
689    
690    checkpoint58s_post
691    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
692      changed exf_set_gen.F so that
693        genperiod=0 means input file is one time-constant field and
694        genperiod=-12 means input file contains 12 monthly means
695    o CG2D: use pre-computed solver main-diagonal (stored in common block);
696      this affects truncation error ; generate new output file for exp. which
697      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
698        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
699        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
700        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
701        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
702        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
703    o start implementation of deep-atmosphere and anelastic formulation
704    o verification: remove 2nd copy of input files and use script "prepare_run"
705      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
706    o mom_common/vecinv/fluxform: fix a few initialisation isssues
707    o profiles: fix for multithreaded case
708    
709    o diagnostics: rename few diags:
710      s/'PRESSURE'/'RCENTER '/g
711      s/'TICE    '/'oceFreez'/g
712      s/'TAUX    '/'oceTAUX '/g
713      s/'TAUY    '/'oceTAUY '/g
714      s/'SWFLUX  '/'oceQsw  '/g
715      s/DIFx/DFxE/g
716      s/DIFy/DFyE/g
717      and add few ocean-forcing diagnostics:
718      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
719    o modifications to pkg/seaice/growth.F and budget.F, which change results of
720      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
721      as actual snow thickness.  It now refers everywhere to effective snow
722      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
723    
724    checkpoint58r_post
725    o modifications to pkg/seaice/growth.F, which change results of
726      lab_sea experiment: fixes pertain to melting snow over open water, to
727      masking EVAP under sea ice, and to using the correct AREA variable for
728      computations of EVAP, PRECIP, HSNOW, and GHEFF
729    o add ability to read bathy, salt, and theta using MNC (off by def)
730    o add flooding algorithm and advection of HSNOW for pkg/seaice;
731      both are turned off by default and do no change any results
732    o seaice advection with pkg/thsice: a step toward the use of non-linear
733      advection scheme, but #ifdef or commented out for now (requires more EXCH).
734    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
735      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
736      in natl_box (affects results @ truncation level: update output.txt)
737    o multi-threading and IO:
738      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
739      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
740        (needed to work with SingleCpuIO): tested in all verif. exp.
741    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
742      affects the results (but none of the verification test uses this scheme).
743    o Adding some pkg/diagnostics capability to pkg/seaice
744      (will certainly be subject to changes)
745    o ctrl: adding new control variables:
746      lwflux, lwdown, evap, snowprecip, apressure, runoff
747    
748    checkpoint58q_post
749    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
750      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
751      high_res_cube configuration by 4% on Columbia.
752    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
753      add (in global_with_exf/code) a version of EXF_INTERP_READ without
754      dynamical allocation (seems to work in multi-threaded).
755    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
756      single CPU io) so that TAF does not have to see EESUPPORT.h
757    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
758    
759    checkpoint58p_post
760    o obcs: stop if obcs is used with useCDscheme = .true.
761    o shelfice:
762     - fix a sign error so that no slip at shelfice interface works
763     - remove stop for combination non-hydrostatic code and shelfice. That does
764       not mean, that the results are correct, but at least they are numerically
765       stable
766    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
767    o added adjoint exch routined for all exch*3d* routines
768      and updated flow directives
769    
770    checkpoint58o_post
771    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
772      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
773    o change controling S/R for writing pickup file (new S/R do_write_pickup)
774      and clean-up reading/writing of pickup files.
775    o fix local version of read/write pickup (NH part) in rotating_tank/code
776    o simplify EXCH interface:
777     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
778     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
779    o added the regrid package
780    o shelfice:
781     - add a simple boundary layer scheme to reduce noise
782     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
783    
784    checkpoint58n_post
785    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
786       local variable (not in common block).
787    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
788      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
789      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
790        to work with SingleCpuIO.
791    o add "_d 0" to real constant of pkg/cfc subroutines ;
792       update exp. cfc_exemple & tutorial_cfc_offline output files.
793    o multi-threading and IO:
794      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
795        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
796      - barrier before and after reading.
797      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
798      - avoid using MDS_WRITELOCAL for LAND pkg output.
799      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
800        common-block variables ; Allows multi-threading with master-thread IO.
801    o change default MAX_NO_THREADS from 32 to 4 ;
802      and stop cleanly when MAX_NO_THREADS is too small.
803    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
804    
805    checkpoint58m_post
806    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
807       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
808    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
809       keep global_ocean.90x40x15 (for AD testing) with former secondary test
810       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
811    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
812        add MITgcm_tutorials (= code + all the tutorials)
813    o ecco, option to compute cost for total ssh (mean+anom)
814    o consistent with addition of ptracer and ssh in pkg/profiles
815    o profiles: adding ptracer and ssh
816    o testreport: change multi-test output-file name
817      (from output.txt.{name} to output.{name}.txt)
818    o profiles: now ok for mutli-tiles case
819    o seaice: add 4 parameters for different advection schemes for area,
820      (effective) seaice thickness, enthalphy, and snow height. Their default
821      is the standard parameter SEAICEadvScheme
822    o calc_gw:
823     - add cosFacU in zonal viscous flux (harmonic.visc.).
824     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
825       of tutorial_plume_on_slope.
826    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
827    o calc_gw: true flux-form, account for horizontal grid spacing.
828      update rotating_tank results, but not plume_on_slope (affected at
829      truncation level, 11 digits).
830    
831    checkpoint58l_post
832    o calc_gw:
833     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
834     - remove side-drag for now (need to fix it); update plume_on_slope results.
835     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
836    o commit code to make SST/SSS weights spatially variable
837      (based on either variable in-situ or variable initial T/S weights)
838    o pkg/ecco:
839      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
840        now based on horizontally varying weights wthetaLev, wsaltLev
841      * cost_averagesflags now returns year indices in addition to day, month
842      * sflux balance is performed on annual basis
843        (sflxumm, sfluxmm2, bal_sfluxmm)
844      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
845        including separate counting and multipliers
846    o pkg/rbcs
847      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
848    
849    checkpoint58k_post
850    o testreport:
851     - always build in dir. "build" (if not there, mkdir build instead of building
852       & running in input)
853     - run in dir run (if it exists), in build otherwise.
854     - call prepare_run (if input/prepare_run exists)
855     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
856    o pkg/exf modifications to interpolation and rotation routines for more
857       reasonable treatment of North Pole singularity: for tracers North Pole
858       value is set to northernmost zonal-mean value, for zonal velocity it is
859       set to zero, and for meridional velocity it is set to northernmost value.
860    o pkg/exf/exf_check_range.F
861     - add tile index to diagnostics and move stop statement to the very
862       end of the routine.
863    o pkg/diagnostics: (diagnostics_main_init.F)
864      define title of isomorphic variables according to the current config.
865    o pkg/thsice with pkg/seaice dynamics:
866    - fix domain of computation (interior only, required for exf) and do exchanges
867    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
868    o towards a standard way of dealing with multi-threading in MONITOR
869      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
870    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
871       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
872    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
873    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
874    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
875       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
876    o tracer advection:
877     - clean-up and simplify calc_common_factors.F
878     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
879       advection subroutine (but still not used within DST advection S/R)
880    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
881    
882    checkpoint58j_post
883    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
884      from file (collects calls previously in FORWARD_STEP)
885    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
886    o adjoint store dir. adjusted accordingly
887    o genmake2
888      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
889    
890    checkpoint58i_post
891    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
892      on wind stress (SEAICEstressFactor defaults to 1.)
893    o Total number of Timers is finite (<=40): comment out 2 non-essential one
894      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
895    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
896      on CS-grid: no longer loosing mass.
897    o exf & curvilinear-grid: no longer modify longitude xC & xG.
898    o pkg/ggl90: fix sloppy output and fix a bug
899    o pkg/seaice: added SEAICEuseEVPpickup parameter
900      - Set to false in order to start EVP solver with
901        non-EVP pickup files when using SEAICEuseEVP
902      - fix sign error in diffusion in seaice_calc_rhs
903    
904    checkpoint58h_post
905    * Modifications for bottom topography control
906      o replace hFacC by _hFacC at various places
907      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
908      o add non-self-adjoint cg2d_nsa
909      o update autodiff support routines
910      o re-initialise hfac after ctrl_depth_ini
911      o works for 5x5 box, doesnt work for global_ocean.90x40x15
912    * Adding verification for 5x5 box (4-layer) bottom topography control
913    
914    checkpoint58g_post
915    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
916       used for mean seasonal cycle, mean diurnal cycle); add an example
917       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
918    o pkg/ggl90:
919      - add parameter (minimum surface kinetic energy)
920      - fix bug (avoiding division by zero)
921    o couple pkg/thsice to pkg/seaice:
922      - modify advection in seaice to accomodate new scalar fields to be advected
923      - only muliDimAdection scheme work with seaice/thsice
924      - mapping of thsice-variables to seaice-variables, back and forth
925      - does not break the verification experiments, but does not give the
926        desired results either
927    o pkg/seaice
928      - make (default) second order advection a bit less confusing?
929    
930    checkpoint58f_post
931    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
932      to pkg/seaice):
933      - new routines thsice_map_exf and thsice_get_exf provide the interface
934      - add an additional formal parameter to thsice_solve4temp
935    o pkg/exf:
936      - add new fields wspeed, snowprecip (to be able to couple to thsice)
937      - correct Stefan-Boltzmann constant
938      - new parameter for longwave surface emittance
939      - separate some stuff from exf_bulkformulae into new routines  
940        exf_radiation, exf_wind
941      - add new parameters and constants: longwave emissivity for ocean, ice
942        and snow, evaporation parameters over ice
943      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
944        either wind from stress or stress from wind
945    o pkg/thSIce:
946    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
947    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
948       and THSICE_CALC_THICKN
949    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
950    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
951      to make debugging easier.
952    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
953    o pkg/bulk_force:
954      - clean-up comments and parameters ;
955      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
956    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
957      generate new output for test-experiment: aim.5l_cs.thSI
958    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
959      testreport accordingly
960    
961    checkpoint58e_post
962    o SEAICE_CGRID adjoint done
963    o R_STAR adjoint implemented.
964      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
965      * need to sort out init. of h0facc, etc.
966    o Make pkg/profile fully independent of ecco,cost, etc. stuff
967      to be able to use it in pure forward.
968    
969    checkpoint58d_post
970    o upgrade simple test-experiment to tutorial example:
971     step.1: duplicate the experiment and (step.2) will remove the old copy.
972      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
973      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
974      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
975      tutorial_global_oce_biogeo    <- copy of dic_example
976      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
977      tutorial_plume_on_slope       <- copy of plume_on_slope
978      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
979      tutorial_global_oce_optim     <- empty for now (David ?)
980      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
981     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
982    o correct a sign problem in cost_scat.F
983    o obcs and ptracers: fix boundary conditions for advections schemes
984      with larger stencil
985    o thsice adjoint: start
986    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
987      completeness
988    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
989      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
990    o ptracers adjoint:
991      * avoid extensive recomputatations
992      * fix missing re-init. of gptr (missed by TAF)
993    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
994      me to turn off the excessive output to STDOUT that this package produces
995    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
996      and add those terms in Vector-Invariant formulation.
997    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
998      if the control period (xx_hfluxperiod etc) is 0
999    o in profiles pkg, clean routines and fix details
1000    o in ecco pkg, reading ssh data:
1001      fix problem in case the model does not start at iter0=0
1002    o fix mnc-pickup/restart for ptracers
1003    o new package prifiles:
1004      code to compute profile-based cost by Gael Forget
1005      (modifs in ecco, ctrl, autodiff)
1006    o Benign bug fix in initialization (spotted by M. Mazloff) of
1007      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1008    
1009    checkpoint58c_post
1010    o adjoint: finish NLFS adjoint and provide reference output in
1011      verification/global_ocean.90x40x15/results_ad_nlfs
1012    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1013      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1014      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1015      with SEAICE_CGRID defined.
1016    o move calendarDumps from "data" to "data.cal" and clean-up the code
1017      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1018    o add useEXF & useCAL flags (for now, set in hard-coded way)
1019    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1020      (were missing in NH mode, and wrong in quasihydrostatic mode).
1021      waiting for Chris updated version of calc_gw to add those CALLs.
1022    o fix bug in quasihydrostatic S/R ;
1023      add a test for this option: global_ocean.90x40x15.qshyd
1024    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1025      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1026    o add on/off flag useOffLine for package OFFLINE
1027    o seaice:
1028      - modify advection so that it works also on the C-grid
1029      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1030        problem in multi-tile runs with C-grid
1031      - add flags for clipping ice velocities and/or masking solver forcing
1032      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1033        C-grid solver
1034      - added a few comments to seaice_diffusion.F
1035      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1036        are now exclusive)
1037      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1038        required re-ordering the code a little:
1039       + make DAIRN global variable (defined in SEAICE)
1040       + move computation of the viscosities eta and zeta into a new separate
1041         routine (because I need to recompute them in seaice_ocean_stress.F)
1042    
1043    checkpoint58b_post
1044    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1045      update output.txt of exp. aim.5l_cs.thSI
1046    o various mnc cleanups and improvements:
1047      + shrink lookup tables by factor of ~4
1048      + better error reporting when running out of lookup space
1049      + able to handle longer path/file names (up to 500 chars)
1050    o adjoint:
1051      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1052      - TBD: "hidden" mom_vecinv recomp. in dynamics
1053    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1054     (allow to differentiate between forcing components using new integer flags:
1055      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1056     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1057    o ecco
1058      - enable trend removal from SSH anomaly obs.
1059    o adjoint
1060      - a fix for PmEpR when #undef EXACT_CONSERV
1061      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1062      - try to fix "hidden" recomp. in forward_step for NLFS
1063        (NLFS seems broken sometimes after I checked it in)
1064    o seaice:
1065     - add c-grid version of the dynamic solver:
1066       + three new routines that are the c-grid substitute lsr, dynsolver
1067         and ostres
1068       + put a few fields that were local to dynsolver into global common
1069         blocks, so that I can move the computation of stresses etc into
1070         seaice_lsr (saves coding but may break the adjoint).
1071     - replace more hardwired parameters by runtime parameters
1072     - add ice masks that mask the rhs of the implicit solvers where there
1073       is no ice (commented out in seaice_dynsolver, because i am not sure
1074       if this works properly), eventually this should replace the clipping
1075       of ice velocities in seaice_dynsolver to +/-40cm/s.
1076    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1077      include it only where its needed
1078    o move balancing of fluxes before the call of external_forcing_surf
1079    o seaice:
1080      - correct units of turning angles (now they are really in degrees)
1081      - move computation of GWATX/Y out of main routine into dynsolver
1082      - initialize GWATX/Y in seaice_init
1083    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1084      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1085    o seaice: add runtime flags for turning angles (default to zero)
1086    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1087      and trend from exf forcing and ctrl control adjustments
1088    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1089      (since checkpoint57x_post)
1090    o change the default rotation period to 86164.s = the Earth rotation
1091    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1092      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1093    o seaice advection: add code for choosing between the default (2nd order
1094      central differences) and multiDim advection schemes provided by
1095      pkg/generic_advdiff
1096    o seaice:
1097      - removed all references to SEAICE_GRID.h fields from
1098        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1099        (cubed-sphere configuration will change a little)
1100      - grid computations in seaice_init are obsolete now.
1101      - cleaned up code a little so that is easier to read (hopefully).
1102      - added new (better?) discretizations of default advection and diffusion
1103        (turn on with SEAICEuseFluxForm)
1104      - replace 1 in 3d global fields by kSurface in growth.F
1105      
1106    checkpoint58a_post
1107    o seaice:
1108      - bug fix in advect.F
1109    o shelfice:
1110      - separate shelfice load anomaly from pload (breaks with time
1111        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1112        Its default is 0., but it may be computed more cleverly from (unknown)
1113        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1114        done offline. A good approximation of the pressure load anomaly is
1115        necessary to avoid large initial adjustment processes underneath
1116        deep-reaching shelfice.
1117      - small fix in ISOMIP shelfice_thermodynamics
1118      - add more sophisticated thermodynamics of Hellmer (1989), this is
1119        now the default
1120      - give a few constants more intuitive names
1121    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1122      if bulk formulae are used in long integration (especially EmPmR). Turn
1123      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1124      if balancePrintMean, the imbalance that is substracted is printed to
1125      STDOUT.
1126    o fix bug (typo) in obcs_apply_eta.F
1127    o add a new package shelfice which enables us to model the circulation
1128      underneath shelf-ice with draughts of hundreds of meters.
1129     - works
1130     - to do: + include improved thermodynamics
1131              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1132                instead of new field kTopC
1133              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1134                instead of new field R_shelfIce and new code in ini_depth.F
1135                and ini_mask_etc.F?
1136              + adjust vertical mixing schemes?
1137    o seaice pkg:
1138     - add a cpp-flag to include a simple formula for a salinity dependent
1139       freezing point of sea water at the surface
1140     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1141       meridional stresses are now different (and hopefully correct)
1142    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1143       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1144       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1145    o pkg/diagnostics: add options and parameters for regional-statistics
1146       diagnostics ; define regions by reading a region-mask from a file
1147       (might add other options later)
1148    o pkg/bulk_force:
1149     - add option and parameters to use AIM surface-flux formulae.
1150     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1151       others forcing fields (defined in PARM05, parameter file "data") are loaded
1152       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1153     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1154     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1155     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1156       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1157     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1158    
1159    checkpoint58
1160    o add "--embed-source" option to genmake2 which, when the supporting
1161      tools can be compiled (as determined by genmake2) will turn on the
1162      embed_files package which then embeds the entire MITgcm source code
1163      (*.[fFhc] + Makefile) used for the build within the executable
1164      - requested by CNH but off by default
1165      - adds a paltry <9MB to the mitgcmuv executable in most cases
1166      - only writes the output when useEMBEDSRC in eedata is true
1167    o clean up 3-dim. relaxation codes:
1168      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1169      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1170      * Thanks to Tom Haine for testing!
1171    
1172    checkpoint57z_post
1173    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1174      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1175    o fix the pickup behavior for obcs in combination with ptracers
1176    o fix a bug in ptracers_external_fields_load
1177    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1178      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1179    o transfered surface NH pressure to eta field (if exactConserv).
1180    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1181         and update lab_sea output.txt file.
1182    o completing 3-dim. relaxation code: additional term
1183         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1184      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1185      * At compile time, in "EXF_OPTIONS.h" set
1186          #define  ALLOW_CLIMTEMP_RELAXATION
1187          #define  ALLOW_CLIMSALT_RELAXATION
1188      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1189          tauThetaClimRelax3Dim = 15552000.0,
1190          tauSaltClimRelax3Dim  = 15552000.0,
1191      * 3 cases:
1192          1) Use a constant-in-time 3-dim. field
1193          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1194          3) Real-time relax. to time-evolving prescribed field
1195    o Adding Laplacian-type smoothness constraint on
1196      initial and boundary (forcing) controls (ic, bc)
1197      * enable at compile-time via
1198        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1199      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1200      * Absolute scale somewhat unclear so far
1201      * no area weighting was included since no other cost term does so far
1202    
1203    checkpoint57y_post
1204    First step for a NLFS adjoint
1205    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1206    o new init. routines for calc_r_star, calc_surf_dr
1207    o still need to deal with ini_masks_etc
1208    o testreport seemed happy
1209    checkpoint57y_pre
1210    
1211    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1212    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1213    o add new offset feature to offline pkg (plus minor cleanup)
1214    o cfc fixes for final year of integration
1215    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1216      be in GCHEM_OPTIONS).
1217    
1218    checkpoint57x_post
1219    o fix testreport Pb in multiple test experiment.
1220    o cleanup our namelist syntax in verification:
1221      - make it more F95 standards compliant (some work still needed)
1222      - allows the vast majority of our tests to work with gfortran
1223    o Non-Hydrostatic:
1224     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1225     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1226    o Allow to apply AB on T,S rather than on AB(gT,gS):
1227     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1228     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1229       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1230     - need a "clever" read_pickup to restart from the other AB formulation
1231    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1232    o remove some unused variables (reduces number of compiler warnings)
1233    o adjoint
1234      * Disable useVariableViscosity for adjoint for time being
1235        (there are a number of extensive recomputations)
1236      * Initialize certain variables needed for adjoint
1237    
1238    checkpoint57w_post
1239    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1240                 fix the singleCpuIO RS version of MDSWRITEFIELD
1241       and add a WARNING if using globalFiles=T with multi-processors.
1242    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1243      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1244    o tracer advection scheme:
1245      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1246       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1247       was not very convenient).
1248      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1249       (further tests needed for the implicit DST & Flux-Limiter schemes).
1250    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1251      and sRef for convenience, handy, when you want to initialize
1252      ptracers in a large domain with a constant non-zero value. Also,
1253      untangle ptracers_init.F a little.
1254    
1255    checkpoint57v_post
1256    o change dome exp. to use variable viscosity in side-drag terms.
1257    o remove all the files from the cfc_offline test since they are now
1258      incorporated into tutorial_cfc_offline which has been producing
1259      identical results for a few days of testing
1260    o add new parameter: sideDragFactor to enable half-slip-side BC
1261      and change side-drag S/R to use viscosity from mom_calc_visc
1262      (can switch back by setting sideDragFactor=0.); affects results at
1263      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1264       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1265    o vorticity & strain are now computed without masking, to account for
1266      no-slip-side BC in variable viscosity calculation ; mask is applied
1267      anyway later on, before computing advection/coriolis terms.
1268    o modify exp4 to test new obcs support for reading from external files
1269      and for passive tracers
1270    o fix behavior of ptracers_monitor when monitor output is written to a
1271      netcdf-file; still not independent of monitor.F (writes in the same
1272      file).
1273    o change default value of tRef (put a uniform, meaningful value for ocean
1274      & atmos) and initialize sRef (was missing, as Martin mentioned).
1275    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1276      to be proportional to enstrophy dissipation length.  Thus,
1277       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1278      This is now consistent with Smagorinsky and with the manual.
1279    
1280    checkpoint57u_post
1281    o OBCS and PTRACERS: add open boundary support for passive tracers
1282      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1283        OB-values from file; this is not different from the way theta and salinity
1284        are treated
1285      - however, Orlanski-radiation conditions are not supported, and the model
1286        will stop if you use pTracers and Orlanski at the same time.
1287      - beefed up the rountine obcs_external_fields_load: now only those open
1288        boundary values are overwritten with values from files for which there
1289        are really files, otherwise the OB-fields remain untouched. This makes
1290        it possible to use different OBs at different ends of the domain (as
1291        with EXF)
1292    o reduce number of exch calls in shap_filt (s2).
1293    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1294      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1295    
1296    checkpoint57t_post
1297    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1298    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1299      same truncation, independent of the face number: affects affects several
1300      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1301    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1302      note that biharmonic viscosity + no-slip was not tested in any experiment.
1303    o fix bug in non-linear free-surf side-drag ; generate new output for
1304      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1305    o make mnc honor the writeBinaryPrec flag for most kinds of output
1306    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1307    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1308      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1309    o add brackets in multi-terms sum to get same truncation, independent of
1310      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1311      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1312    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1313      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1314      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1315      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1316      Suggested values of viscosity parameters found in mom_calc_visc.
1317      Many new viscosity diagnostics available.
1318    
1319    checkpoint57s_post
1320    o Add clearing-house for viscosity calculations, mom_calc_visc and
1321      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1322      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1323      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1324      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1325      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1326      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1327      ViscAhStrain and viscAhTension are now retired.
1328    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1329    o In response to JMC's bug report, genmake2 now ignores any soft-links
1330      that it finds in the *current* directory when searching for files.
1331      Soft-links found in any other source directories will still work as
1332      they did before.
1333    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1334      a C routine to unlimit the stack size
1335    o mnc-ify pkg/aim snapshot vars
1336    o mnc-ify pkg/land as requested by Daniel
1337    o various changes to mnc including:
1338      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1339      - output can now be grouped so that all files within a group
1340          change the ITER portion of their names in lock-step together
1341      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1342          and works with both EXCH1 and EXCH2 (but needs more testing)
1343      - writing works for all verification test cases w/ g77 on Linux
1344    
1345    checkpoint57r_post
1346    o make MNC variable initialization happen earlier
1347    o add diagnostics for (almost) each term of the momentum Eq.
1348    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1349    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1350    o remove MINIMAL_TAVE_OUTPUT option ;
1351      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1352    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1353      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1354    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1355    o add time-dependent SST, SSS control
1356    o cost terms in ecco/ modularized (new cost_generic.F)
1357    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1358    o new infrastructure for seaice model vs. obs misfits in seaice/
1359      * driver from the_main_loop.F is seaice_cost_driver.F
1360      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1361      * gradient check in Exp. 6a of natl_box_adjoint/
1362    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1363      (see README file)
1364    
1365    checkpoint57q_post
1366    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1367    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1368      - bug was reported by Jean-Michel and Ian Fenty
1369    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1370      update exp. cpl_aim+ocn output.
1371    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1372      Needed for high-res. runs with large global files
1373      to be able to limit tapelev size
1374    o Changed some tests for adjoint:
1375      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1376      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1377      * global_ocean.90x40x15/ back to default 3-level checkpointing
1378    o Modifications to enable scripted COMMON to MODULE conversion
1379      * verification/OpenAD/code/ has necessary scripts and description;
1380      * converts, compiles and runs successfully;
1381    
1382    checkpoint57p_post
1383    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1384    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1385      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1386    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1387    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1388      (was already the case for dissipation with mom_vecinv,
1389       and also the case for grad.PhiHyd when staggered-timeStep)
1390      This will allow to put dissipation out-off the AB time-stepping.
1391     Unfortunately, affects truncation error. Update output of exp. that "fails"
1392      (cg2d matching number) and leave the others for later: front_relax(10),
1393      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1394      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1395    
1396    checkpoint57o_post
1397    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1398      (2) its ready to be documented during the 20050801 DocFest
1399    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1400      for ideal_2D_oce and lab_sea on linux_ia32_g77
1401    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1402      in global1x1_tot/code_seaice_adj to access indices 32, 33
1403      (worth another tag)
1404    
1405    checkpoint57n_post
1406    o adding precip control xx_precip 32
1407    o adding swflux control xx_swflux 33
1408    o Replacing 10 forcing penalty cost routines by 1 generic.
1409    o Implementing partitioning in time-mean and variable adjustment
1410      for atmos. state.
1411    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1412    o in natl_box_adjoint:
1413      * updated exp 1 to 10
1414        (but does not have time-mean vs. variable split results yet)
1415    o updated global1x1/*_seaice_adj/
1416      to incorporate latest changes
1417    o enable useSingleCpuIO for mdsio vector routines
1418      (applies in particular to tapelev I/O)
1419    o removed inefficient K-loop in all active_file*control*.F
1420    
1421    checkpoint57m_post
1422    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1423      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1424    o pkg/exch2: filling of face-corner halo regions is optional
1425      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1426    
1427    checkpoint57l_post
1428     tag before updating tutorials (pre-release-2)
1429    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1430       for output and interpolation of input fields onto model grid)
1431    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1432       Affects results of exp. rotating_tank ; update output.txt.
1433    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1434          and taking the square quantity and/or using a fraction-weight field.
1435    o fix aim_diagnostics_init.F mate numbers.
1436    o add mnc output capability to diagnostics/diagstat and update
1437      our cvsignore files for the ACSII output generated
1438    
1439    checkpoint57k_post
1440    o lab_sea now uses diagnostics package and provides a suite of
1441      new EXF diagnostics output.
1442    
1443    checkpoint57j_post
1444    o exf
1445      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1446        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1447        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1448      * extended diagnostics output
1449        - now includes all EXF variables
1450        - hs, hl moved to common block
1451        - separate S/R for diagnostics, called after ctrl vector is added
1452        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1453        - EXFqnet contains true Qnet (i.e. includes qsw)
1454      * updated verif. lab_sea, global_with_exf
1455      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1456        to ensure that diagnostics sees a true EXFqnet
1457    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1458    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1459      several times with different frequencies.
1460    o mnc-ify the thsice package as requested by Daniel Enderton
1461      - the monitor--MNC output needs work
1462      - many attributes need to be added (most are currently blank)
1463    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1464      - many attributes need to be added (most are currently blank)
1465    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1466    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1467    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1468      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1469         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1470    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1471     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1472    
1473    checkpoint57i_post
1474    o Diagnostics package was changed: diagnostic allocation is now deactivated
1475      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1476    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1477      add 1rst Order upwind vertical Shear.
1478    o add a quick fix for A/B checkpointing in OFFLINE mode
1479    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1480      end-run around the C/Fortran linking horror in eesup/src/timers.F
1481    o added pkg/runclock: allows user to terminate run based on wall clock
1482    o added non-hydrostatic scaling parameter: nh_am2
1483    o pkg/my82: futile attempt to make results compiler-independent by adding
1484      some "_d 0", etc. no effect.
1485    o for mnc output, fill the 'T' coordinate var with myTime and create a
1486      separate 'iter' variable for iteration count
1487    o pkg/diagnostics:
1488      add new capability: output of Global/Regional & per-level statistics ;
1489      tested against monitor output (including land & thSIce) on various exp.
1490    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1491    
1492    checkpoint57h_done
1493      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1494      data.diagnostics, data.gchem, data.ptracers) is done.
1495    
1496    o pkg/diagnostics: prepare for Global/Regional statistics.
1497      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1498    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1499      and rename it: DIFFERENT_MULTIPLE
1500    
1501    checkpoint57h_post
1502    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1503    o pkg/diagnostics: change output frequency, now in seconds (instead
1504      of Nb of iterations). This requires to change data.diagnostics.
1505    checkpoint57h_pre
1506    
1507    o in mnc, let the user create the output dir if both mnc_outdir_date
1508      and mnc_outdir_num are false
1509    o add fflags() to pkg/diagnostics which allows one to specify, on a
1510      per-file basis, the file precision [default behavior is unchanged]
1511    o added diagnostics to pkg/kpp, including computation of mixed layer
1512      depth based on a temperature/density criterion
1513    o updated verification/natl_box to test the new pkg/kpp diagnostics
1514    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1515    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1516    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1517      not mnc -- this mistake was found by JMC and is now corrected
1518    
1519    checkpoint57g_post
1520    o add Adams-Bashforth 3rd Order time stepping:
1521      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1522      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1523    checkpoint57g_pre
1524    
1525    o make lambda[Theta,Salt]ClimRelax spatially varying
1526      (default remains spatially uniform constant based on tau)
1527    o added new control variables
1528      * init. uVel, vVel, etanN
1529      * lambda[Theta,Salt]ClimRelax
1530    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1531      (suggested by G. Forget)
1532    
1533    checkpoint57f_post
1534    o add parameter "baseTime" = model base time = time at iteration zero
1535      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1536      account for baseTime shift
1537    o move Coriolis arrays from PARAMS.h to GRID.h
1538    checkpoint57f_pre
1539    
1540    o mnc-ifying the seaice package
1541    o introduced an alternative length scale calculation for use in the limiting
1542      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1543    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1544    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1545      as well as grad(vort3).  Made it compatible with both approximate form
1546      for the cubed sphere and full form of these gradients.  Added flag
1547      useFullLeith to select between approximate and full form.  
1548    o add "d0" in getcon.F to reduce differences between compilers/platforms
1549      update output.txt of exp. fizhi-gridalt-hs
1550    o change port_rand funtion to allow to set the seed.
1551    o fix obscure MNC bug involving conversion between reals and integers
1552      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1553        new version is now more standards-compliant
1554    o adjoint-related modifications
1555      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1556      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1557      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1558    
1559    checkpoint57e_post
1560    o Adding eddy stress controls a la Ferreira et al.
1561    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1562    
1563    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1564      update output.txt of exp. fizhi-gridalt-hs
1565    o add more "Z" dimensions and associated coordinate vars to MNC
1566    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1567    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1568      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1569      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1570      months and years.  Requires pkg/cal.
1571    o diagnostics: add pickup functionality
1572      - off by default for backwards compatibility
1573      - current version only uses MDSIO -- MNC will be added
1574    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1575    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1576    
1577    checkpoint57d_post
1578    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1579    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1580      output from the diagnostics package
1581    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1582    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1583      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1584    o add coordinate variables to the MNC output from the diagnostics package
1585    o change MNC-flags default value: true when useMNC=TRUE
1586    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1587      the ability (off by default) to read the grid information using MNC
1588    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1589    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1590    o do snap-shot diagnostics at the middle of the time-interval (instead of
1591      at the end).
1592    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1593      new test for AIM with thSIce + slab-ocean
1594    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1595    o move state variable diagnostics to the beginning of the time step ;
1596      (note: still needs some work specially for snap-shot diagnostics)
1597      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1598    
1599    checkpoint57c_post
1600    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1601    o generate new output.txt files on faulks with g77 & the new -ieee option
1602    checkpoint57c_pre
1603    
1604    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1605      update output.txt of exp. global_ocean.90x40x15
1606    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1607      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1608    o add saltFlux(+File) forcing capability with periodicExternalForcing
1609    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1610    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1611    o improvements for the MNC output from DIAGNOSTICS:
1612      - correct handling of the unlimitied dimension
1613      - all dims now have associated coordinate variables
1614      - variables located at U, V, and Corner ("Z") points are now written
1615        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1616        *all* data points are output
1617    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1618    o added pkg/seaice/seaice_monitor.F
1619    o mdsio_readfield.F can now read files visible only to master MPI process.
1620    o pkg/seaice: some test code for ice-modified ocean stress
1621    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1622      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1623      spurious negative numbers for precipitation and humidity.  Will cause
1624      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1625    o pkg/ctrl/
1626      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1627        May be enabled via doPackDiag
1628      *  introduce z-scaling of
1629         + gradient (doZscalePack) and
1630         + control (doZscaleUnpack)
1631    o pkg/mdsio/
1632      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1633      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1634    
1635    checkpoint57b_post
1636    o simplify options in diagnostics_fill arguments (remove weird combinations)
1637    o fix MNC coordinate variables so that they now contain per-face index
1638      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1639      general, EXCH2 grids are only aligned to a "local" coordinate system
1640    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1641    o Implement instantaneous output within pkg diagnostics:
1642      setting a negative frequency in data.diagnostics produces
1643     "snap-shot" output (as opposed to time-average if freq > 0)
1644    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1645      NOTE: change ptracer diagnostics name: use 2 characters to work with
1646            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1647    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1648      becomes the coordinate variable for the 'T' dimension
1649    o add CF-style coordinate variables to MNC
1650      - just a first cut:  numbers are meaningless on the cubesphere and
1651        missing along the T axis but otherwise it works!
1652    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1653    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1654    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1655      this is based directly on what the model compute, so that the content of
1656      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1657    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1658    o clean up build options files for SunOS, in particular
1659      - remove -traditional from xmakedepend
1660      - change -xarch=v9 to -xarch=native for f77
1661      - restore use of make (not gmake)
1662      - add CC=gcc if using g77
1663    o changes per discussion of AM, JMC, & EH3 today:
1664      - move redundant "grid" variables out of "state" -- in preparation of
1665        creating proper CF-style coordinate variables and in recognition
1666        that any/all grid variables can be easily copied (eg. w/NCO) from
1667        the grid files into any of the other NetCDF files
1668      - *always* output grid variables with MDSIO (this will eventually be
1669        changed)
1670      - output MNC grid file if useMNC is true
1671    o every instance of _END_MASTER() has been found and replaced with
1672      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1673      preprocessors
1674    o re-arrange diagnostics pkg initialisation:
1675     - allow each package to extend the available diagnostics list
1676     - add some checking and fix small problems (multi-threaded, ...)
1677     - new S/R diagnostics_fill (replace fill_diagnostics):
1678       look through the short list of active diag. (instead of the long list)
1679       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1680    
1681    checkpoint57a_post
1682    o this set of changes restores TAMC compatibility
1683      tested for global_ocean.90x40x15 adjoint on trough
1684      (what a pain)
1685    
1686    checkpoint57a_pre
1687    o some modifs in tools/build_options for sunos
1688    o call ctrl_pack for ctrl at end for optimcycle=0
1689    
1690    checkpoint57
1691    o add horizontal bi-harmonic viscosity for vertical velocity
1692      - new parameter viscA4W (defaults to viscA4)
1693      - affects only non-hydrostatic code
1694      - to be done: no-slip lateral boundary conditions
1695    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1696    o implement Implicit Vertical advection for pTracers
1697    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1698      (implemented also for implicit vertical diffusion & advection)
1699    o OBCS: extend application of tracer open boundary conditions
1700      to a strip beyond the boundary of width Olx/Oly
1701    o add call monitor to TAF set of required calls (flow directives)
1702      and include in natl_box_adjoint
1703    o untangle a few ifdefs related to cost, ctrl, autodiff
1704      untangel a few ALLOW_ECCO_OPTIMIZATION
1705    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1706      (theta2, salt2 in ecco_cost_weights)
1707    
1708    checkpoint56c_post
1709    o OBCS as control variables
1710      - update ctrl_ad_diff.list, obcs_ad_diff.list
1711      - remove balance of obcs controls from default
1712      - fix index bug nobcs in ctrl_init
1713      - fix dummy fields filen in ctrl_pack
1714      - add dummy weights for obcs
1715    o lsopt: comment out fort.94 output
1716    o optim:
1717      - remove unnecessary header files
1718      - adjusted namelists
1719      - add xerbla.F to Makefile
1720    o exf:
1721      - multiple modifications of exf_check_range
1722      - unit change in exf_init_runoff from [m/year] to [m/s]
1723    o mdsio:
1724      - i/o-vector change debugLevel from debLevA to debLevB
1725    
1726    checkpoint56b_post
1727    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1728      is called from DO_THE_MODEL_IO
1729      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1730      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1731      - clean up PTRACERS_WRITE_TIMEAVE a little
1732    o add another verification experiment that tests both the cfc-pkg and
1733      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1734      reactive tendencies treated inline with regular timestepping
1735    o testreport previously did a lousy job of comparing small numbers, so
1736      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1737      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1738      testreport.
1739    o ptracers_monitor: bug fix for MPI
1740    
1741    checkpoint56a_post
1742    o GCHEM: finish reorganizating the package
1743      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1744        (introduces another 3D-array for each passive tracer, but only if
1745        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1746        gchemTendency is not needed because the timestep is done separately)
1747      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1748      - GCHEM is now---more or less cleanly---separate from PTRACERS
1749      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1750        so clear to me how that should be done in a general way.
1751    o CFC: improve formatting of output in CFC_ATMOS
1752    o PTRACERS:
1753      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1754        that ALL experiments with ptracers enable can be checked. This makes
1755        GCHEM_MONITOR obsolete.
1756      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1757        monitorFreq
1758      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1759    o add PTRACERS (PTR0[1-5]) to testreport output
1760    o exf_check_range:
1761      * default changed to .TRUE.
1762      * will check values for niter0 if debLevA, every timestep if debLevB
1763      * STOP in exf_check_range if 'out of range'
1764      * range chosen generous to allow for potential extema
1765      TBD: a version with stricter range
1766           permitted range would be runtime parameters
1767    o GMredi:
1768      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1769      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1770      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1771    o GCHEM:
1772      - move call to GCHEM_FORCING_SEP, so that it is now called before
1773        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1774      - introduced a useGCHEM runtime flag and applied it everywhere.
1775      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1776        this flag is now only visible within GCHEM-pkg routines.
1777      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1778        be replaced by a 3D array that is computed before thermodynamics; for
1779        this, the tracer ID iTracer had to be included into the parameter list
1780        of ptracers_forcing
1781      - set up forward_step to call gchem_forcing, that will replace
1782        gchem_forcing_int in ptracers_forcing
1783      - cleaning up
1784    o small cleaning of exch2: remove files that are also in eesupp/src
1785    
1786    checkpoint56
1787    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1788    o mnc: cleanup "full" files--fixes out-of-memory problem
1789    o ECCO-GODAE
1790      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1791      * fully merged and updated from SIO code
1792        windstress sign change affects
1793        - exf_inscal_[u/v]stress
1794        - sign of xx_tau[u/v] adjustments
1795        - signs in cost_scat
1796      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1797      * natl_box_adjoint updated and compressed
1798      * 2-level checkpoint switch added
1799        (tested in EXP. 1 of natl_box_adjoint)
1800      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1801    o SVD
1802      * first complete, non-hacked version for SVD calculations
1803      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1804        performed via direct access files admtlm_vector.it????
1805        (via ctrl_[un]pack)
1806      * optimcycle is used for ARPACK iteration counter
1807        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1808      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1809        and add linear transforms where necessary
1810      * controls are initial/final SST, SSS (can be extended; need to check
1811        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1812    o mdsio: filename info to both stderr, stdout
1813    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1814      from sign change
1815    
1816    checkpoint55j_post
1817    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1818      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1819    o add consistent build directories and .cvsignore files to verification
1820    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1821    o make all subroutines 30 or less characters in length for certain older
1822      compilers to work (a thorough search only turns up two routines in
1823      pkg/ptracers)
1824    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1825      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1826    
1827    checkpoint55i_post
1828    o change arrays for total vertical diffusivity (2.D if explicit,
1829      3.D if implicit) ; each ptracer uses its own background value.
1830    o added mnc/NetCDF output capability to ocn_compon_interf
1831      - added bits to verification/cpl_aim+ocn so that it can run on
1832        ITRDA and other clusters without the mpirun "-wd" option
1833    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1834      configuration
1835    o give MNC the ability to create additional files rather than
1836      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1837      - the default is just less than 2GB which is a practical limit
1838        on many systems
1839    o Compute the non-local term using either KPP vertical diffusivity (=default)
1840       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1841    
1842    checkpoint55h_post
1843    o add verification test "vermix"
1844    o remove all the *_ioinc flags and replace with the single global
1845      outputTypesInclusive flag
1846    o allow to set a vertical profile of vertical diffusivity for T & S
1847    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1848    o useMNC moved from data.mnc to data.pkg
1849    
1850    checkpoint55g_post
1851    o Renaming carbon AD experiments to comply with testreport conventions
1852    o Updating adjoint of Held-Suarez hs94.1x64x5
1853    o Fixing directives for non-ECCO forward_step, after ECCO directives
1854      have been fixed to avoid recomp. of do_oceanic_phys
1855      Works well for global_ocean.90x40x15,
1856      but recomp. issue remains for carbon
1857    o Updating adjoint output for natl_box_adjoint after
1858      pkg/ecco has been modified (see taga c55d_post)
1859    
1860    checkpoint55f_post
1861    o rename to timeave_init_fixed
1862    
1863    checkpoint55e_post
1864    o some delicate re-shuffle of store directives to avoid one
1865      extra call of do_oceanic_physics
1866      affects ecco_the_main_loop.F, do_oceanic_physics.F
1867      checkpoint_lev1_directives.h
1868    o NB: this may break global_ocean adjoint temporarily,
1869      but it is clear how to fix it. Will do later, need this now.
1870    
1871    checkpoint55d_post
1872    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1873    o ecco_cost_weights is modified to 1x1 runs
1874    o modifs to allow observations to be read in as
1875      single file or yearly files
1876    o enable to read exf forcing fields as either
1877      single file or yearly files (flag useExfYearlyFields)
1878    checkpoint55d_pre
1879    
1880    o switch between 2-level and 3-level checkpointing
1881    o add ability of MNC to write local and "partial" (eg. 2D slices where
1882      the full 3D field is never actually stored) arrays to NetCDF files
1883      with the correct (that is, the complete multi-dimensional) set of
1884      array indicies
1885      - used in mom_vecinv() to write the diagFreq output
1886      - tested (demonstrated) in verification/aim.5l_cs
1887    o further mnc-ification
1888      - add verification/lab_sea to the list with mnc setups
1889      - fix undefined mnc v-names in cd_code
1890      - add kpp to mnc output (both snapshot and timeave)
1891    o non-hydrostatic code
1892      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1893        in calc_gw.F
1894      - defaults to viscAh
1895      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1896        friction or Leith) in non-hydrostatic mode, as long as there is
1897        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1898    o pkg/cost
1899      extend simple cost functions to treat time mean quantities
1900      (T,U,V) via cost_accumulate_state from cost_tile
1901    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1902        be 2 times larger than the minimum size the advection scheme requires.
1903        now get a perfect conservation of salt in advect_cs test-exp (updated)
1904    o GGL90 (Gaspar's TKE mixed layer)
1905      - add horizontal diffusion of TKE, requires exchanges in
1906        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1907        default. In OPA there is no horizontal diffusion of TKE but the
1908        mixing coefficients are computed from a horizontal average of TKE of
1909        6 points or so. I think that diffusion has a little more physical
1910        justification.
1911      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1912        was in vain)
1913      - mask tke-variable in ggl90_init
1914    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1915    o fix biharmonic diffusion on CS-grid.
1916    o more obcs stuff
1917      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1918        for reading boundary values. This routine is called from
1919        obcs_prescribe_read
1920      - updated obcs_check
1921      - changed sponge layer relaxation parameter units for days to seconds
1922      - turned off sponge layer by default
1923      - changed argument list of OBCS_CALC to myTime+deltaTclock
1924      - fixed about 35 bugs in obcs_external_fields_load
1925    
1926    checkpoint55c_post
1927    o obcs stuff
1928      - new runtime flags useOBCSprescribe, useOBCSbalance
1929      - re-arranged obcs_calc
1930      - moved exf_getobcs to obcs_prescibe_read
1931        obcs_prescibe_read is called after ORLANSKI stuff
1932        and independent of it (executable can contain all).
1933      - updated obcs_check
1934      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1935        These may be necessary only if tangential velocities are
1936        prescribed at OB, not sure, needs testing.
1937    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1938      which simplifies the calls and passes the ifc check-bounds test
1939    
1940    checkpoint55b_post
1941    o add a 2D scalar, Z location, exchange_2 routine.
1942    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1943      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1944      affects advect_cs results (for the wrong reason): update output.txt
1945    o use a more standard discretization for biharmonic viscosity ;
1946     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1947      affects results of dome set-up: update output.txt
1948    o fix gad_advection.F (CubedSphere part), back to version 1.23
1949    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1950    
1951    checkpoint55a_post
1952    o merged code to
1953      * prescribe/read time-dependent open boundaries
1954        (works in conjunction with exf, cal)
1955      * sponge layer code for open boundaries
1956      * each boundary N/S/E/W now has its own CPP option
1957        (healthy for the adjoint)
1958    
1959    checkpoint55
1960    o up-to-date adjoint of previous breaks
1961      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1962      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1963      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1964      - carbon: * remove tr1-related adjoint verification
1965                * add ptracer as control variable
1966    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1967      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1968    
1969    checkpoint54f_post
1970    o in verification/carbin/ remove experiment related to
1971      ALLOW_PASSIVE_TRACER (array tr1 etc)
1972      code_ad/ input_ad/ results_ad
1973    
1974    o add two new packages
1975      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1976        + subject to optimization (memory)
1977      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1978        + subject to reordering (many GOTOs in the original code)
1979        + so far opps is called for every (i,j) point, and then operates in
1980          the vertical; one may want to reorder the scheme in order operate in
1981          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1982          fields)
1983    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1984      - all verification tests compile and run with linux_ia32_g77
1985      - defaults are compatible with current input files--nothing
1986        should change if you were not previously using MNC
1987      - MNC output has been added in numerous places (eg. timeave)
1988        but there are still a few writes not yet do-able with MNC
1989        (this is in progress)
1990      - flags now allow for either/or/both use of MDSIO and MNC and
1991        documentation will soon follow
1992      - numerous small formatting cleanups for ProTeX
1993    o add version info (via BUILD_INFO.h) to MNC and stdout
1994    
1995    checkpoint54e_post
1996    o add two new packages
1997      - pp81 (Packanowski and Philander, 1981), Richardson number and
1998        stratification dependent mixing
1999      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2000      - these scheme operate in a similar manner as KPP (without ghat, of
2001        course), however there is only one diffusivity that is used for both
2002        temperature and salinity (and passive tracers)ç
2003    o add offline package
2004    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2005      provided by Stephanie Dutkiewicz
2006    o genmake2: add ability to search for C compilers and cleanup test output
2007      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2008    
2009    checkpoint54d_post
2010    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2011    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2012      leading to additional shift by 5 days each year of integration
2013       (i.e. leading to considerable offset over the years)
2014    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2015    o start with no AB and no initial filtering (staggerTimeStep):
2016      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2017    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2018      (external loading & cpl import/export stay in forward_step.F)
2019    o update coupling interface to work with new staggerTimeStep
2020    o change MDSIO ptracers_pickup.
2021    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2022    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2023    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2024    
2025    checkpoint54c_post
2026    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2027      this affects (truncation error) output.txt of test-exp:
2028       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2029    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2030    o change Qnet to always be the net heat flux, (+upward).
2031      affects (truncation error) output of natl_box exp.: updated
2032    o define the max number of passive tracers in PTRACERS_SIZE.h
2033    o start to test mnc routinely in exp0
2034    o add sea-ice loading (sIceLoad) as a new forcing field.
2035    
2036    checkpoint54b_post
2037    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2038       impressive on Altix and Opteron systems)
2039    o diagnostics can now write NetCDF files through the mnc package
2040    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2041    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2042    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2043      affects (truncation error) output of lab_sea & natl_box exp.: updated
2044    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2045    
2046    checkpoint54a_post
2047    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2048    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2049    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2050    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2051      + internal_wave (shift in writing cg2d_ini_res)
2052    checkpoint54a_pre
2053    
2054    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2055      - modified verification/lab_sea and natl_box_adjoint accordingly
2056    
2057    checkpoint54
2058    checkpoint53g_post
2059    o prepare splitting of thermodynamics: store convect.counter in common block
2060    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2061      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2062    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2063    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2064    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2065    o restore adjointability
2066    
2067    checkpoint53f_post
2068    o modifications that affect AIM experiment results (update output.txt):
2069      - no advection of S at top interface Nr (pkg/generic_advdiff)
2070      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2071    o AIM pkg:
2072      - include stability function into surf.Flux derivative relative to Tsurf
2073      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2074    
2075    checkpoint53e_post
2076    o merged cylindrical coord configuration
2077    o added rotating_tank experiment
2078    checkpoint53e_pre
2079    
2080    checkpoint53d_post
2081    o faulks upgraded: re-generate output.txt that have changed:
2082       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2083    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2084    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2085    o added Sadourny discretization of Coriolis
2086      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2087      - re-enabled use of omega3 (useAbsVorticity)
2088    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2089      vector-invariant equations
2090      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2091    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2092      hopefully without new bugs
2093      - still to do: biharmonic friction for non-hydrostatic w
2094    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2095    o regenerated output for global_ocean_ebm (using -ieee)
2096    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2097      of mom_common/
2098      - simple re-arrangement of instructions within computing loop
2099    checkpoint53d_pre
2100    
2101    checkpoint53c_post
2102    o new version of coupler for AIM+thSIce and Ocean models
2103     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2104     - land: change Evaporation of snow
2105     - aim with thSIce: fix bug in snow-precip.
2106    o changes to calc_gw.F
2107     - bug fix for w^2 term near the bottom boundary
2108     - (hopefully) improve the lateral slip boundary condtions for use with
2109        partial/looped cells
2110      - because the bug fix changes two verification experiments anyway (exp5
2111        and plume on slope), change the lateral boundary condition from half slip
2112        to the value of no_slip_sides
2113    o ebm package wasnt quite up to the parallel task. Fixed that.
2114    o Adjoint of EBM package + verification
2115      * TLM OK
2116      * ADM not sufficient accuracy yet (needs further testing)
2117    
2118    checkpoint53b_post
2119    o Commiting new energy balance model to repository
2120      * package is pkg/ebm
2121      * verif. is verification/global_ocean_ebm
2122      * references are in ebm_driver.F
2123    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2124    C        Global thermohaline circulation. Part I:
2125    C        Sensitivity to atmospheric moisture transport.
2126    C        J. Climate 12(1), 71-82
2127    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2128    C        Global thermohaline circulation. Part II:
2129    C        Sensitivity with interactive transport.
2130    C        J. Climate 12(1), 83-91
2131    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2132    C        Destabilization of the thermohaline circulation
2133    C        by atmospheric eddy transports.
2134    C        J. Climate 7(12), 1870-1882
2135    o Will need long integration testing.
2136    checkpoint53b_pre
2137    
2138    o created pkg/mom_common in preparation for variable viscosity code
2139    o renamed and split ini_mnc_io
2140    o pkg/land: only liquid water can diffuse or run-off
2141    o AIM using land: soil wetness availability account for snow
2142    o added printMapIncludesZeros to EEPARMS namelist
2143    
2144    checkpoint53a_post
2145    o restore TAMC compatiility for exf_constants.h
2146      (no usage of _d in .h)
2147    o Additional storing in KPP in an attempt to fix
2148      TAMC problem with adjoint of KPP code.
2149      (no success...)
2150      Identical code works fine with TAF.
2151    o Fixed verification/natl_box_adjoint experiments.
2152      Initial conditions for Experiments 4 and 5 are now
2153      set to "SEAICE_initialHEFF=0", which is more reasonable,
2154      and hence gives results closer to that of Experiment 2.
2155      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2156    
2157    checkpoint53
2158    o stable checkpoint with up to date adjoint
2159      TLM tests only run for 1st grdchk at the moment. Its unclear if
2160      this is a code problem or a problem with resetting code for g_
2161      variables that is being autogenerated wrong.
2162      Otherwise:
2163       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2164       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2165         are both still in chaos following their security messes.
2166    
2167    checkpoint52n_post
2168    o various build (mostly genmake2) changes including:
2169      - ability to build/run more easily within Cygwin and MacOS X
2170      - more complicated Makefiles with a stronger dependence on Gnu Make
2171    o pkg/seaice modifications
2172      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2173        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2174        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2175      - changed proxy for geostrophic velocity and updated
2176        verification/lab_sea/results/* accordingly
2177      - removed ADI dynamic solver from pkg/seaice
2178      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2179        they caused a segmentation fault under certain circumstances
2180      - removed unused field WATR
2181    o bug fix in exf-package:
2182      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2183         now reflect that.
2184    o small fixes in the cal-package:
2185      - set reference date to first of January for the 'model'-calendar
2186      - failing of cal_CheckDate in cal_FullDate now actually results in a
2187        warning
2188    o small modifications in exf-package to increase flexibility:
2189      - change climtempfreeze from a constant to a runtime parameter that
2190        is specified in data.exf_clim (default = -1.9)
2191      - introduce runtime parameter windstressmax (default = 2.0) that is
2192        specified in data.exf
2193    o fix in pkg/thsice:
2194      - update Evap (Tsf changes) to be consistent with Latent heat flux
2195      - maintain snow precipitation unchanged (even if Tsf >=0).
2196     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2197    
2198    checkpoint52m_post
2199    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2200      this does not change any of the results, because myIter=0 in swfrac always
2201      lead to jwtype=2 (the default anyway), but the call makes little sense
2202      as a default
2203    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2204    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2205      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2206    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2207    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2208    o extending useSingleCpuIO option to work with new exch2 I/O format
2209      - old-style, missing-tile I/O is still accessible by defining CPP
2210        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2211    o monitor package can write to NetCDF files and/or STDOUT
2212    o fix re-definition bug in MNC_GRID_INIT_ALL()
2213    o doc/api_reference added
2214      - a framework for building an API Reference Manual using all
2215        the "protex" comments embedded in the code
2216      - see pkg/generic_advdiff, pkg/mnc for examples
2217    o MNC:
2218      - make myThid the last argument for all subroutines
2219      - new default for the grid files: NO halos
2220      - add useMNC and other run-time flags
2221      - separate per-file-group handling of the unlimited dimension
2222      - early initialization of MNC w/ flags read at the eeboot stage
2223        and lookup tables set in initialize_fixed
2224      - write all MNC output to a freshly-created directory
2225    o thermodynamics sea-ice (thsice) is now tested with testreport.
2226    o test exp. advect_cs: use the standard cs32 grid ; update output.
2227    o Added functionality to grdchk:
2228      pick global i,j,k position (or nearest wet) where to perform check.
2229    
2230    checkpoint52l_post
2231    o new land formulation:
2232      a) use ground enthalpy as prognostic variable to ensure exact
2233         energy conservation.
2234      b) account for water temperature and for latent heat of freezing
2235         in all processes (rain, run-off, ground storage)
2236      c) compute surface and ground temperature implicitly.
2237    o aim_v23 modification for new land model:
2238      a) Treat separately land / ocean / sea-ice surface fluxes
2239         to allow implicit computation of land & sea-ice surface temp.
2240      b) add snow precipitation.
2241    checkpoint52l_pre
2242    
2243    o fix problem (when 1 tile is empty) in min/max monitor.
2244    o fix bug in timeAve (u,vZetatave in common block)
2245    o no restoring terms under ice for pkg/seaice
2246    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2247    o bug fix for pkg/seaice pickups
2248    o change MNC call locations and add coordinate attributes
2249    o mask vorticity at the corner ; affects global_ocean.cs output
2250    o fix ini_curvilinear_grid ; test CS experiments with mpi
2251    o aim.5l_cs: modify sea-ice fraction input file ; update output
2252    o exf: Adding simple range check routine for exf fields after read
2253    
2254    checkpoint52k_post
2255    o removed top-level directory "diags"
2256      - we migrated these functions to pkg/timeave a long time ago
2257    o fixed bug introduced in pkg/monitor
2258    o accuracy ctrlprec = 32 insuffient for gradient checks using
2259      averaged fields (I/O via cost_averages)
2260      -> use ctrl.h in active_file*.F to control I/O precision.
2261    o paramter list of CALL ADTHE_MAIN_LOOP
2262    o added initial do_the_model_io to ecco
2263    o set all ...Freq to zero after cost_final
2264      taveFreq, dumpFreq, pChkptFreq
2265    o MAIN and ECCO differentiability restored
2266    
2267    checkpoint52j_post
2268    o fix nchklev in tamc.h for global_ocean...
2269    o Bringing flow and store directives up-to-date
2270    o Really weird thing!
2271      call do_the_model_io from the_main_loop with parameters
2272      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2273      TAF places a faulty re-call of initialise_varia
2274      after cost_final call which should not be there!
2275    checkpoint52j_pre
2276    
2277    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2278      error messages
2279    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2280    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2281      debug output
2282    o modfied mdsio_writefield.F to handle non-global files under exch2
2283    o update AIM Cubed-Sphere exp (aim.5l_cs):
2284      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2285    o update AIM Equatorial Channel exp:
2286      use standard aim_v23 pkg and change the SST fields to be more realistic.
2287    o globalFile now works with exch2
2288    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2289      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2290    o limit timeave output for hi-res integrations
2291    
2292    checkpoint52i_post
2293    o removed CPP_EEOPTIONS.h from verification/*/code
2294    o updated the tiling for global_ocean_pressure
2295    checkpoint52i_pre
2296    
2297    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2298      the old pkg/aim).
2299    
2300    checkpoint52h_pre
2301    o shortened offending lines in exch2_send_rx?.template
2302    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2303    o genmake2: add build & execute test for NetCDF code
2304    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2305      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2306    o added useSingleCPUIO flag to monitor.F and mon_out.F
2307    o added temporary hack for sea-ice dynamics on the cube:
2308      metric terms are ignored and it is assumed that
2309      there is no sea-ice on cube faces 1, 2, 4, and 5.
2310    
2311    checkpoint52f_post
2312    o added exch2 cube routines to pkg/exch2
2313    o modified hs94.cs-32x32x5 to use it
2314    o added new grid files to hs94.cs-32x32x5
2315    checkpoint52f_pre
2316    
2317    checkpoint52e_post
2318    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2319      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2320    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2321      to work with implicit vertical advection and AB ;
2322    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2323    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2324     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2325    checkpoint52e_pre
2326    
2327    o fix bug in impldiff when Nr=1 or Nr=2.
2328    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2329    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2330    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2331      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2332    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2333    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2334    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2335    
2336    checkpoint52d_post
2337    o re-tiled many expts to allow comparison in multi-processor mode
2338      - updated output accordingly
2339      - changed hs94.128x64x5 to use intial T from file rather than use the
2340        random number generator
2341    o add infrastructure in model routines for fizhi and gridalt packages
2342    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2343    o changes to permit hi-res, cubed-sphere, configuration
2344      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2345      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2346      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2347        of surface winds for the cube
2348      (A verification experiment, based on global_ocean.cs32x15, but with
2349       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2350       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2351       complete with example surface forcing files and matlab scripts to look
2352       at the output and compare it with that of global_ocean.cs32x15.)
2353    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2354       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2355       to conform to the common rule.
2356    o check-in the first version of the coupler + interfaces for multi-components
2357       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2358       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2359       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2360       - ocean and atmos. share the same horizontal grid (no interpolation).
2361       - exchanges between component and coupler is done in forward_step
2362    o new verification experiment, cpl_aim+ocn:
2363       coupled ocean - AIM atmosphere on cs32 grid.
2364    
2365    checkpoint52d_pre
2366    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2367    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2368    
2369    checkpoint52c_post
2370    o Fixing OPTIONS files for use of exf:
2371      - ALLOW_ECCO not needed
2372      - ECCO_CPPOPTIONS.h should not be included from
2373        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2374        as has been the case in the past
2375      - All cal/exf related options are currently set in
2376        single header file. Should remain so until we
2377        agree on a consistent new policy.
2378    o Removed all CPP options for cal package.
2379      cal has no more CPP options.
2380    o modified STOREs in GAD_ADVECTION
2381    o corrected key comp. for passkey
2382    
2383    checkpoint52b_post
2384    o new version: "thsice" of thermodynamic sea-ice pkg:
2385     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2386     - modify fluxes but do not change theta directly;
2387     - light cleaning of bulk_force pkg (still needed with thsice).
2388     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2389       + output_thsice.txt to test thsice & bulk_force pkgs.
2390    o put back grid & coriolis monitor output.
2391    checkpoint52b_pre
2392    
2393    o call "do_the_model_io" at the beginning (=> dump initial state)
2394    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2395    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2396      (need info on NUMBER_OF_PTRACERS)
2397    o missing PTRACERS headers in some routines
2398    o default tamc.h in pkg/autodiff supposed to crash
2399      to ensure proper customization
2400    
2401    checkpoint52a_post
2402    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2403      - moved surfaceTendencyTice from pkg/seaice to main code
2404      - subroutine FREEZE_SURFACE now limits only surface temperature
2405        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2406        => new output.txt for global_ocean.cs32x15 & global_with_exf
2407      - keep the old version of FREEZE for backward compatibility;
2408        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2409      - corresponding modifs for TAF directives
2410    o added surface flux output variables to TIMEAVE_STATVARS
2411    o time-averaged output for pkg/ptracers
2412    o fix problem with ECCO-related divided adjoint
2413      snapshot file was missing some ad-variables,
2414      but no warning issued by TAF
2415    
2416    checkpoint52a_pre
2417    o some bug fixes for #undef REAL4_IS_SLOW
2418    
2419    checkpoint52 = ecco_c52_e35
2420    o after testing adjoints of checkpoint51u_post
2421    
2422    checkpoint51u_post
2423    o this is the post-merge tag of the ecco-branch
2424      (needs another clean checkout and re-testing)
2425    o various natl_box_adjoint configs and results
2426      but no input fields
2427    o obcs adjoint not yet merged!
2428    o adding ECCO global 1x1 and 2x2 degree configs
2429    o updated/extended some store directives for seaice
2430    o pkg/ecco now containes ecco-specific part of cost function
2431    o top level routines the_main_loop, forward_step
2432      supersede those in model/src/
2433      previous input data.cost now in data.ecco
2434      (new namelist ecco_cost_nml)
2435    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2436    
2437    checkpoint51t_post
2438    o this is the pre-merge tag of the ecco-branch
2439    
2440    checkpoint51s_post
2441    o cleanup: removed various obsolete #define-s
2442    o pkg/grdchk
2443      - renamed 'ph-grd 3' to 'grad-res'
2444      - merged from ecco-branch
2445        (remaining bug fixes for obcs gradient checks)
2446      - additional high-precision output for testreport
2447        (grep for 'precision_grdchk_result')
2448    
2449    checkpoint51r_post
2450    o cleaned up or removed CPP_OPTIONS.h files
2451    o updated results for some of the tests to reflect the new
2452      optfiles (-ieee: -O0 instead of -O3)
2453    
2454    checkpoint51q_post
2455    o cd_code:
2456      - moved cd_scheme.F -> cd_code_scheme.F
2457      - separate read_checkpoint from cd_code_ini_vars.F
2458      - separated cd_code part from write_checkpoint
2459      - updated AD_SOURCE, generated .flow
2460      - added CD_CODE_VARS.h to the_main_loop
2461      - Moving cd_code specific store dir.s to pkg/cd_code
2462    o ctrl package totally restructured
2463      - pack/unpack now optional and decoupled from
2464        xx_/adxx_ I/O
2465      - ctrl_pack/unpack cleaned
2466        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2467      - confined inclusion of AD_CONFIG.h to where necessary.
2468    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2469    
2470    checkpoint51p_post
2471  o create initial cd_code package  o create initial cd_code package
2472      - WARNING: the initialization of fields within packages
2473        is broken because INI_FIELDS (where READ_CHECKPOINT is
2474        called) is called *before* PACKAGES_INIT_VARIABLES.
2475        This seems to be backwards since
2476        1) its important to initially zero the entire field including
2477           the "halo" region
2478        2) zeroing needs to be done *before* reading pickup info
2479           and the pickup call might or might not happen in any
2480           particular run
2481      - this needs an overhaul for R2
2482  o cleanup verification/*/code/GMREDI_OPTIONS.h  o cleanup verification/*/code/GMREDI_OPTIONS.h
2483  o cleanup testreport  o cleanup testreport
2484    

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