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revision 1.123 by jmc, Fri Jan 24 17:55:25 2003 UTC revision 1.502 by jmc, Mon Jun 20 23:23:33 2005 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 add Sadourny like discretization to the 4th.O vorticity advection scheme
8    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
9      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
10         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
11    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
12     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
13    
14    checkpoint57i_post
15    o Diagnostics package was changed: diagnostic allocation is now deactivated
16      by setting an empty file name in the namelist (used to be by setting 0 frequency)
17    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
18      add 1rst Order upwind vertical Shear.
19    o add a quick fix for A/B checkpointing in OFFLINE mode
20    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
21      end-run around the C/Fortran linking horror in eesup/src/timers.F
22    o added pkg/runclock: allows user to terminate run based on wall clock
23    o added non-hydrostatic scaling parameter: nh_am2
24    o pkg/my82: futile attempt to make results compiler-independent by adding
25      some "_d 0", etc. no effect.
26    o for mnc output, fill the 'T' coordinate var with myTime and create a
27      separate 'iter' variable for iteration count
28    o pkg/diagnostics:
29      add new capability: output of Global/Regional & per-level statistics ;
30      tested against monitor output (including land & thSIce) on various exp.
31    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
32    
33    checkpoint57h_done
34      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
35      data.diagnostics, data.gchem, data.ptracers) is done.
36    
37    o pkg/diagnostics: prepare for Global/Regional statistics.
38      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
39    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
40      and rename it: DIFFERENT_MULTIPLE
41    
42    checkpoint57h_post
43    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
44    o pkg/diagnostics: change output frequency, now in seconds (instead
45      of Nb of iterations). This requires to change data.diagnostics.
46    checkpoint57h_pre
47    
48    o in mnc, let the user create the output dir if both mnc_outdir_date
49      and mnc_outdir_num are false
50    o add fflags() to pkg/diagnostics which allows one to specify, on a
51      per-file basis, the file precision [default behavior is unchanged]
52    o added diagnostics to pkg/kpp, including computation of mixed layer
53      depth based on a temperature/density criterion
54    o updated verification/natl_box to test the new pkg/kpp diagnostics
55    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
56    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
57    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
58      not mnc -- this mistake was found by JMC and is now corrected
59    
60    checkpoint57g_post
61    o add Adams-Bashforth 3rd Order time stepping:
62      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
63      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
64    checkpoint57g_pre
65    
66    o make lambda[Theta,Salt]ClimRelax spatially varying
67      (default remains spatially uniform constant based on tau)
68    o added new control variables
69      * init. uVel, vVel, etanN
70      * lambda[Theta,Salt]ClimRelax
71    o separate masks used for ctrl_pack/unpack 'from write_grid' output
72      (suggested by G. Forget)
73    
74    checkpoint57f_post
75    o add parameter "baseTime" = model base time = time at iteration zero
76      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
77      account for baseTime shift
78    o move Coriolis arrays from PARAMS.h to GRID.h
79    checkpoint57f_pre
80    
81    o mnc-ifying the seaice package
82    o introduced an alternative length scale calculation for use in the limiting
83      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
84    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
85    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
86      as well as grad(vort3).  Made it compatible with both approximate form
87      for the cubed sphere and full form of these gradients.  Added flag
88      useFullLeith to select between approximate and full form.  
89    o add "d0" in getcon.F to reduce differences between compilers/platforms
90      update output.txt of exp. fizhi-gridalt-hs
91    o change port_rand funtion to allow to set the seed.
92    o fix obscure MNC bug involving conversion between reals and integers
93      - it caused no problems with certain (eg. gcc, ifc) compilers but the
94        new version is now more standards-compliant
95    o adjoint-related modifications
96      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
97      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
98      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
99    
100    checkpoint57e_post
101    o Adding eddy stress controls a la Ferreira et al.
102    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
103    
104    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
105      update output.txt of exp. fizhi-gridalt-hs
106    o add more "Z" dimensions and associated coordinate vars to MNC
107    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
108    o parameter calendarDumps: when set, approximate months (30-31 days) and years
109      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
110      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
111      months and years.  Requires pkg/cal.
112    o diagnostics: add pickup functionality
113      - off by default for backwards compatibility
114      - current version only uses MDSIO -- MNC will be added
115    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
116    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
117    
118    checkpoint57d_post
119    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
120    o modify verification/ideal_2D_oce so that it tests the creation of mnc
121      output from the diagnostics package
122    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
123    o make genmake2 more portable by using ".$FS" instead of ".f" for more
124      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
125    o add coordinate variables to the MNC output from the diagnostics package
126    o change MNC-flags default value: true when useMNC=TRUE
127    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
128      the ability (off by default) to read the grid information using MNC
129    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
130    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
131    o do snap-shot diagnostics at the middle of the time-interval (instead of
132      at the end).
133    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
134      new test for AIM with thSIce + slab-ocean
135    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
136    o move state variable diagnostics to the beginning of the time step ;
137      (note: still needs some work specially for snap-shot diagnostics)
138      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
139    
140    checkpoint57c_post
141    o Change testing option (-ieee) to get closer agreement between g77 & ifort
142    o generate new output.txt files on faulks with g77 & the new -ieee option
143    checkpoint57c_pre
144    
145    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
146      update output.txt of exp. global_ocean.90x40x15
147    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
148      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
149    o add saltFlux(+File) forcing capability with periodicExternalForcing
150    o allow to use pkg diagnostics for GM-Redi & ThSIce output
151    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
152    o improvements for the MNC output from DIAGNOSTICS:
153      - correct handling of the unlimitied dimension
154      - all dims now have associated coordinate variables
155      - variables located at U, V, and Corner ("Z") points are now written
156        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
157        *all* data points are output
158    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
159    o added pkg/seaice/seaice_monitor.F
160    o mdsio_readfield.F can now read files visible only to master MPI process.
161    o pkg/seaice: some test code for ice-modified ocean stress
162    o exf_getffields interpolation defaults to bilinear for all scalar forcing
163      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
164      spurious negative numbers for precipitation and humidity.  Will cause
165      some small numerical differences for integrations using pkg/exf/exf_interp.F.
166    o pkg/ctrl/
167      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
168        May be enabled via doPackDiag
169      *  introduce z-scaling of
170         + gradient (doZscalePack) and
171         + control (doZscaleUnpack)
172    o pkg/mdsio/
173      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
174      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
175    
176    checkpoint57b_post
177    o simplify options in diagnostics_fill arguments (remove weird combinations)
178    o fix MNC coordinate variables so that they now contain per-face index
179      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
180      general, EXCH2 grids are only aligned to a "local" coordinate system
181    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
182    o Implement instantaneous output within pkg diagnostics:
183      setting a negative frequency in data.diagnostics produces
184     "snap-shot" output (as opposed to time-average if freq > 0)
185    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
186      NOTE: change ptracer diagnostics name: use 2 characters to work with
187            more than 9 tracers. Add also diagnostics of advect & diffus flux.
188    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
189      becomes the coordinate variable for the 'T' dimension
190    o add CF-style coordinate variables to MNC
191      - just a first cut:  numbers are meaningless on the cubesphere and
192        missing along the T axis but otherwise it works!
193    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
194    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
195    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
196      this is based directly on what the model compute, so that the content of
197      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
198    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
199    o clean up build options files for SunOS, in particular
200      - remove -traditional from xmakedepend
201      - change -xarch=v9 to -xarch=native for f77
202      - restore use of make (not gmake)
203      - add CC=gcc if using g77
204    o changes per discussion of AM, JMC, & EH3 today:
205      - move redundant "grid" variables out of "state" -- in preparation of
206        creating proper CF-style coordinate variables and in recognition
207        that any/all grid variables can be easily copied (eg. w/NCO) from
208        the grid files into any of the other NetCDF files
209      - *always* output grid variables with MDSIO (this will eventually be
210        changed)
211      - output MNC grid file if useMNC is true
212    o every instance of _END_MASTER() has been found and replaced with
213      _END_MASTER( myThid ) in order to satisfy certain picky Sun
214      preprocessors
215    o re-arrange diagnostics pkg initialisation:
216     - allow each package to extend the available diagnostics list
217     - add some checking and fix small problems (multi-threaded, ...)
218     - new S/R diagnostics_fill (replace fill_diagnostics):
219       look through the short list of active diag. (instead of the long list)
220       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
221    
222    checkpoint57a_post
223    o this set of changes restores TAMC compatibility
224      tested for global_ocean.90x40x15 adjoint on trough
225      (what a pain)
226    
227    checkpoint57a_pre
228    o some modifs in tools/build_options for sunos
229    o call ctrl_pack for ctrl at end for optimcycle=0
230    
231    checkpoint57
232    o add horizontal bi-harmonic viscosity for vertical velocity
233      - new parameter viscA4W (defaults to viscA4)
234      - affects only non-hydrostatic code
235      - to be done: no-slip lateral boundary conditions
236    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
237    o implement Implicit Vertical advection for pTracers
238    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
239      (implemented also for implicit vertical diffusion & advection)
240    o OBCS: extend application of tracer open boundary conditions
241      to a strip beyond the boundary of width Olx/Oly
242    o add call monitor to TAF set of required calls (flow directives)
243      and include in natl_box_adjoint
244    o untangle a few ifdefs related to cost, ctrl, autodiff
245      untangel a few ALLOW_ECCO_OPTIMIZATION
246    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
247      (theta2, salt2 in ecco_cost_weights)
248    
249    checkpoint56c_post
250    o OBCS as control variables
251      - update ctrl_ad_diff.list, obcs_ad_diff.list
252      - remove balance of obcs controls from default
253      - fix index bug nobcs in ctrl_init
254      - fix dummy fields filen in ctrl_pack
255      - add dummy weights for obcs
256    o lsopt: comment out fort.94 output
257    o optim:
258      - remove unnecessary header files
259      - adjusted namelists
260      - add xerbla.F to Makefile
261    o exf:
262      - multiple modifications of exf_check_range
263      - unit change in exf_init_runoff from [m/year] to [m/s]
264    o mdsio:
265      - i/o-vector change debugLevel from debLevA to debLevB
266    
267    checkpoint56b_post
268    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
269      is called from DO_THE_MODEL_IO
270      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
271      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
272      - clean up PTRACERS_WRITE_TIMEAVE a little
273    o add another verification experiment that tests both the cfc-pkg and
274      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
275      reactive tendencies treated inline with regular timestepping
276    o testreport previously did a lousy job of comparing small numbers, so
277      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
278      implemented in the little c-progam tmp_cmpnum.c which is embedded in
279      testreport.
280    o ptracers_monitor: bug fix for MPI
281    
282    checkpoint56a_post
283    o GCHEM: finish reorganizating the package
284      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
285        (introduces another 3D-array for each passive tracer, but only if
286        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
287        gchemTendency is not needed because the timestep is done separately)
288      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
289      - GCHEM is now---more or less cleanly---separate from PTRACERS
290      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
291        so clear to me how that should be done in a general way.
292    o CFC: improve formatting of output in CFC_ATMOS
293    o PTRACERS:
294      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
295        that ALL experiments with ptracers enable can be checked. This makes
296        GCHEM_MONITOR obsolete.
297      - include a runtime parameter PTRACERS_monitorFreq that defaults to
298        monitorFreq
299      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
300    o add PTRACERS (PTR0[1-5]) to testreport output
301    o exf_check_range:
302      * default changed to .TRUE.
303      * will check values for niter0 if debLevA, every timestep if debLevB
304      * STOP in exf_check_range if 'out of range'
305      * range chosen generous to allow for potential extema
306      TBD: a version with stricter range
307           permitted range would be runtime parameters
308    o GMredi:
309      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
310      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
311      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
312    o GCHEM:
313      - move call to GCHEM_FORCING_SEP, so that it is now called before
314        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
315      - introduced a useGCHEM runtime flag and applied it everywhere.
316      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
317        this flag is now only visible within GCHEM-pkg routines.
318      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
319        be replaced by a 3D array that is computed before thermodynamics; for
320        this, the tracer ID iTracer had to be included into the parameter list
321        of ptracers_forcing
322      - set up forward_step to call gchem_forcing, that will replace
323        gchem_forcing_int in ptracers_forcing
324      - cleaning up
325    o small cleaning of exch2: remove files that are also in eesupp/src
326    
327    checkpoint56
328    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
329    o mnc: cleanup "full" files--fixes out-of-memory problem
330    o ECCO-GODAE
331      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
332      * fully merged and updated from SIO code
333        windstress sign change affects
334        - exf_inscal_[u/v]stress
335        - sign of xx_tau[u/v] adjustments
336        - signs in cost_scat
337      * ctrl_get_gen: avoid update of tau[u/v] for first few days
338      * natl_box_adjoint updated and compressed
339      * 2-level checkpoint switch added
340        (tested in EXP. 1 of natl_box_adjoint)
341      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
342    o SVD
343      * first complete, non-hacked version for SVD calculations
344      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
345        performed via direct access files admtlm_vector.it????
346        (via ctrl_[un]pack)
347      * optimcycle is used for ARPACK iteration counter
348        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
349      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
350        and add linear transforms where necessary
351      * controls are initial/final SST, SSS (can be extended; need to check
352        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
353    o mdsio: filename info to both stderr, stdout
354    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
355      from sign change
356    
357    checkpoint55j_post
358    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
359      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
360    o add consistent build directories and .cvsignore files to verification
361    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
362    o make all subroutines 30 or less characters in length for certain older
363      compilers to work (a thorough search only turns up two routines in
364      pkg/ptracers)
365    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
366      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
367    
368    checkpoint55i_post
369    o change arrays for total vertical diffusivity (2.D if explicit,
370      3.D if implicit) ; each ptracer uses its own background value.
371    o added mnc/NetCDF output capability to ocn_compon_interf
372      - added bits to verification/cpl_aim+ocn so that it can run on
373        ITRDA and other clusters without the mpirun "-wd" option
374    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
375      configuration
376    o give MNC the ability to create additional files rather than
377      exceeding a specified file size limit "MNC_MAX_FILESIZE"
378      - the default is just less than 2GB which is a practical limit
379        on many systems
380    o Compute the non-local term using either KPP vertical diffusivity (=default)
381       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
382    
383    checkpoint55h_post
384    o add verification test "vermix"
385    o remove all the *_ioinc flags and replace with the single global
386      outputTypesInclusive flag
387    o allow to set a vertical profile of vertical diffusivity for T & S
388    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
389    o useMNC moved from data.mnc to data.pkg
390    
391    checkpoint55g_post
392    o Renaming carbon AD experiments to comply with testreport conventions
393    o Updating adjoint of Held-Suarez hs94.1x64x5
394    o Fixing directives for non-ECCO forward_step, after ECCO directives
395      have been fixed to avoid recomp. of do_oceanic_phys
396      Works well for global_ocean.90x40x15,
397      but recomp. issue remains for carbon
398    o Updating adjoint output for natl_box_adjoint after
399      pkg/ecco has been modified (see taga c55d_post)
400    
401    checkpoint55f_post
402    o rename to timeave_init_fixed
403    
404    checkpoint55e_post
405    o some delicate re-shuffle of store directives to avoid one
406      extra call of do_oceanic_physics
407      affects ecco_the_main_loop.F, do_oceanic_physics.F
408      checkpoint_lev1_directives.h
409    o NB: this may break global_ocean adjoint temporarily,
410      but it is clear how to fix it. Will do later, need this now.
411    
412    checkpoint55d_post
413    o ECCO specific cost function terms (up-to-date with 1x1 runs)
414    o ecco_cost_weights is modified to 1x1 runs
415    o modifs to allow observations to be read in as
416      single file or yearly files
417    o enable to read exf forcing fields as either
418      single file or yearly files (flag useExfYearlyFields)
419    checkpoint55d_pre
420    
421    o switch between 2-level and 3-level checkpointing
422    o add ability of MNC to write local and "partial" (eg. 2D slices where
423      the full 3D field is never actually stored) arrays to NetCDF files
424      with the correct (that is, the complete multi-dimensional) set of
425      array indicies
426      - used in mom_vecinv() to write the diagFreq output
427      - tested (demonstrated) in verification/aim.5l_cs
428    o further mnc-ification
429      - add verification/lab_sea to the list with mnc setups
430      - fix undefined mnc v-names in cd_code
431      - add kpp to mnc output (both snapshot and timeave)
432    o non-hydrostatic code
433      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
434        in calc_gw.F
435      - defaults to viscAh
436      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
437        friction or Leith) in non-hydrostatic mode, as long as there is
438        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
439    o pkg/cost
440      extend simple cost functions to treat time mean quantities
441      (T,U,V) via cost_accumulate_state from cost_tile
442    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
443        be 2 times larger than the minimum size the advection scheme requires.
444        now get a perfect conservation of salt in advect_cs test-exp (updated)
445    o GGL90 (Gaspar's TKE mixed layer)
446      - add horizontal diffusion of TKE, requires exchanges in
447        do_fields_blocking_exchanges, horizontal diffusivity is zero by
448        default. In OPA there is no horizontal diffusion of TKE but the
449        mixing coefficients are computed from a horizontal average of TKE of
450        6 points or so. I think that diffusion has a little more physical
451        justification.
452      - clean up ggl90_calc in the hope of reducing memory usage (this hope
453        was in vain)
454      - mask tke-variable in ggl90_init
455    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
456    o fix biharmonic diffusion on CS-grid.
457    o more obcs stuff
458      - added obcs_external_fields_load as an alternative to the EXF-pkg option
459        for reading boundary values. This routine is called from
460        obcs_prescribe_read
461      - updated obcs_check
462      - changed sponge layer relaxation parameter units for days to seconds
463      - turned off sponge layer by default
464      - changed argument list of OBCS_CALC to myTime+deltaTclock
465      - fixed about 35 bugs in obcs_external_fields_load
466    
467    checkpoint55c_post
468    o obcs stuff
469      - new runtime flags useOBCSprescribe, useOBCSbalance
470      - re-arranged obcs_calc
471      - moved exf_getobcs to obcs_prescibe_read
472        obcs_prescibe_read is called after ORLANSKI stuff
473        and independent of it (executable can contain all).
474      - updated obcs_check
475      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
476        These may be necessary only if tangential velocities are
477        prescribed at OB, not sure, needs testing.
478    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
479      which simplifies the calls and passes the ifc check-bounds test
480    
481    checkpoint55b_post
482    o add a 2D scalar, Z location, exchange_2 routine.
483    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
484      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
485      affects advect_cs results (for the wrong reason): update output.txt
486    o use a more standard discretization for biharmonic viscosity ;
487     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
488      affects results of dome set-up: update output.txt
489    o fix gad_advection.F (CubedSphere part), back to version 1.23
490    o fix bug in mom_vi_del2uv.F (CubedSphere part).
491    
492    checkpoint55a_post
493    o merged code to
494      * prescribe/read time-dependent open boundaries
495        (works in conjunction with exf, cal)
496      * sponge layer code for open boundaries
497      * each boundary N/S/E/W now has its own CPP option
498        (healthy for the adjoint)
499    
500    checkpoint55
501    o up-to-date adjoint of previous breaks
502      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
503      - global_ocean_ebm: adjoint still needs fix (TLM ok)
504      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
505      - carbon: * remove tr1-related adjoint verification
506                * add ptracer as control variable
507    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
508      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
509    
510    checkpoint54f_post
511    o in verification/carbin/ remove experiment related to
512      ALLOW_PASSIVE_TRACER (array tr1 etc)
513      code_ad/ input_ad/ results_ad
514    
515    o add two new packages
516      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
517        + subject to optimization (memory)
518      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
519        + subject to reordering (many GOTOs in the original code)
520        + so far opps is called for every (i,j) point, and then operates in
521          the vertical; one may want to reorder the scheme in order operate in
522          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
523          fields)
524    o overhaul of IO so that we now have flags for MDSIO and/or MNC
525      - all verification tests compile and run with linux_ia32_g77
526      - defaults are compatible with current input files--nothing
527        should change if you were not previously using MNC
528      - MNC output has been added in numerous places (eg. timeave)
529        but there are still a few writes not yet do-able with MNC
530        (this is in progress)
531      - flags now allow for either/or/both use of MDSIO and MNC and
532        documentation will soon follow
533      - numerous small formatting cleanups for ProTeX
534    o add version info (via BUILD_INFO.h) to MNC and stdout
535    
536    checkpoint54e_post
537    o add two new packages
538      - pp81 (Packanowski and Philander, 1981), Richardson number and
539        stratification dependent mixing
540      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
541      - these scheme operate in a similar manner as KPP (without ghat, of
542        course), however there is only one diffusivity that is used for both
543        temperature and salinity (and passive tracers)ç
544    o add offline package
545    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
546      provided by Stephanie Dutkiewicz
547    o genmake2: add ability to search for C compilers and cleanup test output
548      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
549    
550    checkpoint54d_post
551    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
552    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
553      leading to additional shift by 5 days each year of integration
554       (i.e. leading to considerable offset over the years)
555    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
556    o start with no AB and no initial filtering (staggerTimeStep):
557      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
558    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
559      (external loading & cpl import/export stay in forward_step.F)
560    o update coupling interface to work with new staggerTimeStep
561    o change MDSIO ptracers_pickup.
562    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
563    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
564    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
565    
566    checkpoint54c_post
567    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
568      this affects (truncation error) output.txt of test-exp:
569       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
570    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
571    o change Qnet to always be the net heat flux, (+upward).
572      affects (truncation error) output of natl_box exp.: updated
573    o define the max number of passive tracers in PTRACERS_SIZE.h
574    o start to test mnc routinely in exp0
575    o add sea-ice loading (sIceLoad) as a new forcing field.
576    
577    checkpoint54b_post
578    o add testreport "-j JOBS" option for parallel builds (tested and pretty
579       impressive on Altix and Opteron systems)
580    o diagnostics can now write NetCDF files through the mnc package
581    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
582    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
583    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
584      affects (truncation error) output of lab_sea & natl_box exp.: updated
585    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
586    
587    checkpoint54a_post
588    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
589    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
590    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
591    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
592      + internal_wave (shift in writing cg2d_ini_res)
593    checkpoint54a_pre
594    
595    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
596      - modified verification/lab_sea and natl_box_adjoint accordingly
597    
598    checkpoint54
599    checkpoint53g_post
600    o prepare splitting of thermodynamics: store convect.counter in common block
601    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
602      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
603    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
604    o new parameter "nShapS": allow to treat differently S from T (nShapT)
605    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
606    o restore adjointability
607    
608    checkpoint53f_post
609    o modifications that affect AIM experiment results (update output.txt):
610      - no advection of S at top interface Nr (pkg/generic_advdiff)
611      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
612    o AIM pkg:
613      - include stability function into surf.Flux derivative relative to Tsurf
614      - calculate clear-sky radiation & surface temp. change (for diagnostics)
615    
616    checkpoint53e_post
617    o merged cylindrical coord configuration
618    o added rotating_tank experiment
619    checkpoint53e_pre
620    
621    checkpoint53d_post
622    o faulks upgraded: re-generate output.txt that have changed:
623       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
624    o Added Bryan and Lewis, 1979, vertical diffusivity profile
625    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
626    o added Sadourny discretization of Coriolis
627      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
628      - re-enabled use of omega3 (useAbsVorticity)
629    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
630      vector-invariant equations
631      - note: does *NOT* yet use same variable visc. for no-slip BC's.
632    o recoded the lateral boundary conditions for non-hydrostatic w, this time
633      hopefully without new bugs
634      - still to do: biharmonic friction for non-hydrostatic w
635    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
636    o regenerated output for global_ocean_ebm (using -ieee)
637    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
638      of mom_common/
639      - simple re-arrangement of instructions within computing loop
640    checkpoint53d_pre
641    
642    checkpoint53c_post
643    o new version of coupler for AIM+thSIce and Ocean models
644     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
645     - land: change Evaporation of snow
646     - aim with thSIce: fix bug in snow-precip.
647    o changes to calc_gw.F
648     - bug fix for w^2 term near the bottom boundary
649     - (hopefully) improve the lateral slip boundary condtions for use with
650        partial/looped cells
651      - because the bug fix changes two verification experiments anyway (exp5
652        and plume on slope), change the lateral boundary condition from half slip
653        to the value of no_slip_sides
654    o ebm package wasnt quite up to the parallel task. Fixed that.
655    o Adjoint of EBM package + verification
656      * TLM OK
657      * ADM not sufficient accuracy yet (needs further testing)
658    
659    checkpoint53b_post
660    o Commiting new energy balance model to repository
661      * package is pkg/ebm
662      * verif. is verification/global_ocean_ebm
663      * references are in ebm_driver.F
664    C      * X. Wang, P. Stone and J. Marotzke, 1999:
665    C        Global thermohaline circulation. Part I:
666    C        Sensitivity to atmospheric moisture transport.
667    C        J. Climate 12(1), 71-82
668    C      * X. Wang, P. Stone and J. Marotzke, 1999:
669    C        Global thermohaline circulation. Part II:
670    C        Sensitivity with interactive transport.
671    C        J. Climate 12(1), 83-91
672    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
673    C        Destabilization of the thermohaline circulation
674    C        by atmospheric eddy transports.
675    C        J. Climate 7(12), 1870-1882
676    o Will need long integration testing.
677    checkpoint53b_pre
678    
679    o created pkg/mom_common in preparation for variable viscosity code
680    o renamed and split ini_mnc_io
681    o pkg/land: only liquid water can diffuse or run-off
682    o AIM using land: soil wetness availability account for snow
683    o added printMapIncludesZeros to EEPARMS namelist
684    
685    checkpoint53a_post
686    o restore TAMC compatiility for exf_constants.h
687      (no usage of _d in .h)
688    o Additional storing in KPP in an attempt to fix
689      TAMC problem with adjoint of KPP code.
690      (no success...)
691      Identical code works fine with TAF.
692    o Fixed verification/natl_box_adjoint experiments.
693      Initial conditions for Experiments 4 and 5 are now
694      set to "SEAICE_initialHEFF=0", which is more reasonable,
695      and hence gives results closer to that of Experiment 2.
696      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
697    
698    checkpoint53
699    o stable checkpoint with up to date adjoint
700      TLM tests only run for 1st grdchk at the moment. Its unclear if
701      this is a code problem or a problem with resetting code for g_
702      variables that is being autogenerated wrong.
703      Otherwise:
704       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
705       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
706         are both still in chaos following their security messes.
707    
708    checkpoint52n_post
709    o various build (mostly genmake2) changes including:
710      - ability to build/run more easily within Cygwin and MacOS X
711      - more complicated Makefiles with a stronger dependence on Gnu Make
712    o pkg/seaice modifications
713      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
714        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
715        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
716      - changed proxy for geostrophic velocity and updated
717        verification/lab_sea/results/* accordingly
718      - removed ADI dynamic solver from pkg/seaice
719      - replaced all occurrences of 1/CSTICE or 1/CSUICE
720        they caused a segmentation fault under certain circumstances
721      - removed unused field WATR
722    o bug fix in exf-package:
723      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
724         now reflect that.
725    o small fixes in the cal-package:
726      - set reference date to first of January for the 'model'-calendar
727      - failing of cal_CheckDate in cal_FullDate now actually results in a
728        warning
729    o small modifications in exf-package to increase flexibility:
730      - change climtempfreeze from a constant to a runtime parameter that
731        is specified in data.exf_clim (default = -1.9)
732      - introduce runtime parameter windstressmax (default = 2.0) that is
733        specified in data.exf
734    o fix in pkg/thsice:
735      - update Evap (Tsf changes) to be consistent with Latent heat flux
736      - maintain snow precipitation unchanged (even if Tsf >=0).
737     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
738    
739    checkpoint52m_post
740    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
741      this does not change any of the results, because myIter=0 in swfrac always
742      lead to jwtype=2 (the default anyway), but the call makes little sense
743      as a default
744    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
745    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
746      atmospheric model (AIM) to use it ; add a "slab ocean" component.
747    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
748    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
749    o extending useSingleCpuIO option to work with new exch2 I/O format
750      - old-style, missing-tile I/O is still accessible by defining CPP
751        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
752    o monitor package can write to NetCDF files and/or STDOUT
753    o fix re-definition bug in MNC_GRID_INIT_ALL()
754    o doc/api_reference added
755      - a framework for building an API Reference Manual using all
756        the "protex" comments embedded in the code
757      - see pkg/generic_advdiff, pkg/mnc for examples
758    o MNC:
759      - make myThid the last argument for all subroutines
760      - new default for the grid files: NO halos
761      - add useMNC and other run-time flags
762      - separate per-file-group handling of the unlimited dimension
763      - early initialization of MNC w/ flags read at the eeboot stage
764        and lookup tables set in initialize_fixed
765      - write all MNC output to a freshly-created directory
766    o thermodynamics sea-ice (thsice) is now tested with testreport.
767    o test exp. advect_cs: use the standard cs32 grid ; update output.
768    o Added functionality to grdchk:
769      pick global i,j,k position (or nearest wet) where to perform check.
770    
771    checkpoint52l_post
772    o new land formulation:
773      a) use ground enthalpy as prognostic variable to ensure exact
774         energy conservation.
775      b) account for water temperature and for latent heat of freezing
776         in all processes (rain, run-off, ground storage)
777      c) compute surface and ground temperature implicitly.
778    o aim_v23 modification for new land model:
779      a) Treat separately land / ocean / sea-ice surface fluxes
780         to allow implicit computation of land & sea-ice surface temp.
781      b) add snow precipitation.
782    checkpoint52l_pre
783    
784    o fix problem (when 1 tile is empty) in min/max monitor.
785    o fix bug in timeAve (u,vZetatave in common block)
786    o no restoring terms under ice for pkg/seaice
787    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
788    o bug fix for pkg/seaice pickups
789    o change MNC call locations and add coordinate attributes
790    o mask vorticity at the corner ; affects global_ocean.cs output
791    o fix ini_curvilinear_grid ; test CS experiments with mpi
792    o aim.5l_cs: modify sea-ice fraction input file ; update output
793    o exf: Adding simple range check routine for exf fields after read
794    
795    checkpoint52k_post
796    o removed top-level directory "diags"
797      - we migrated these functions to pkg/timeave a long time ago
798    o fixed bug introduced in pkg/monitor
799    o accuracy ctrlprec = 32 insuffient for gradient checks using
800      averaged fields (I/O via cost_averages)
801      -> use ctrl.h in active_file*.F to control I/O precision.
802    o paramter list of CALL ADTHE_MAIN_LOOP
803    o added initial do_the_model_io to ecco
804    o set all ...Freq to zero after cost_final
805      taveFreq, dumpFreq, pChkptFreq
806    o MAIN and ECCO differentiability restored
807    
808    checkpoint52j_post
809    o fix nchklev in tamc.h for global_ocean...
810    o Bringing flow and store directives up-to-date
811    o Really weird thing!
812      call do_the_model_io from the_main_loop with parameters
813      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
814      TAF places a faulty re-call of initialise_varia
815      after cost_final call which should not be there!
816    checkpoint52j_pre
817    
818    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
819      error messages
820    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
821    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
822      debug output
823    o modfied mdsio_writefield.F to handle non-global files under exch2
824    o update AIM Cubed-Sphere exp (aim.5l_cs):
825      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
826    o update AIM Equatorial Channel exp:
827      use standard aim_v23 pkg and change the SST fields to be more realistic.
828    o globalFile now works with exch2
829    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
830      mon_vort3.F to make exch2 friendly with >1 tile per cube face
831    o limit timeave output for hi-res integrations
832    
833    checkpoint52i_post
834    o removed CPP_EEOPTIONS.h from verification/*/code
835    o updated the tiling for global_ocean_pressure
836    checkpoint52i_pre
837    
838    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
839      the old pkg/aim).
840    
841    checkpoint52h_pre
842    o shortened offending lines in exch2_send_rx?.template
843    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
844    o genmake2: add build & execute test for NetCDF code
845    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
846      old grid files, moved CPP_EEMACROS.h to pkg/exch2
847    o added useSingleCPUIO flag to monitor.F and mon_out.F
848    o added temporary hack for sea-ice dynamics on the cube:
849      metric terms are ignored and it is assumed that
850      there is no sea-ice on cube faces 1, 2, 4, and 5.
851    
852    checkpoint52f_post
853    o added exch2 cube routines to pkg/exch2
854    o modified hs94.cs-32x32x5 to use it
855    o added new grid files to hs94.cs-32x32x5
856    checkpoint52f_pre
857    
858    checkpoint52e_post
859    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
860      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
861    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
862      to work with implicit vertical advection and AB ;
863    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
864    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
865     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
866    checkpoint52e_pre
867    
868    o fix bug in impldiff when Nr=1 or Nr=2.
869    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
870    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
871    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
872      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
873    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
874    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
875    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
876    
877    checkpoint52d_post
878    o re-tiled many expts to allow comparison in multi-processor mode
879      - updated output accordingly
880      - changed hs94.128x64x5 to use intial T from file rather than use the
881        random number generator
882    o add infrastructure in model routines for fizhi and gridalt packages
883    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
884    o changes to permit hi-res, cubed-sphere, configuration
885      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
886      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
887      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
888        of surface winds for the cube
889      (A verification experiment, based on global_ocean.cs32x15, but with
890       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
891       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
892       complete with example surface forcing files and matlab scripts to look
893       at the output and compare it with that of global_ocean.cs32x15.)
894    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
895       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
896       to conform to the common rule.
897    o check-in the first version of the coupler + interfaces for multi-components
898       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
899       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
900       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
901       - ocean and atmos. share the same horizontal grid (no interpolation).
902       - exchanges between component and coupler is done in forward_step
903    o new verification experiment, cpl_aim+ocn:
904       coupled ocean - AIM atmosphere on cs32 grid.
905    
906    checkpoint52d_pre
907    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
908    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
909    
910    checkpoint52c_post
911    o Fixing OPTIONS files for use of exf:
912      - ALLOW_ECCO not needed
913      - ECCO_CPPOPTIONS.h should not be included from
914        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
915        as has been the case in the past
916      - All cal/exf related options are currently set in
917        single header file. Should remain so until we
918        agree on a consistent new policy.
919    o Removed all CPP options for cal package.
920      cal has no more CPP options.
921    o modified STOREs in GAD_ADVECTION
922    o corrected key comp. for passkey
923    
924    checkpoint52b_post
925    o new version: "thsice" of thermodynamic sea-ice pkg:
926     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
927     - modify fluxes but do not change theta directly;
928     - light cleaning of bulk_force pkg (still needed with thsice).
929     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
930       + output_thsice.txt to test thsice & bulk_force pkgs.
931    o put back grid & coriolis monitor output.
932    checkpoint52b_pre
933    
934    o call "do_the_model_io" at the beginning (=> dump initial state)
935    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
936    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
937      (need info on NUMBER_OF_PTRACERS)
938    o missing PTRACERS headers in some routines
939    o default tamc.h in pkg/autodiff supposed to crash
940      to ensure proper customization
941    
942    checkpoint52a_post
943    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
944      - moved surfaceTendencyTice from pkg/seaice to main code
945      - subroutine FREEZE_SURFACE now limits only surface temperature
946        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
947        => new output.txt for global_ocean.cs32x15 & global_with_exf
948      - keep the old version of FREEZE for backward compatibility;
949        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
950      - corresponding modifs for TAF directives
951    o added surface flux output variables to TIMEAVE_STATVARS
952    o time-averaged output for pkg/ptracers
953    o fix problem with ECCO-related divided adjoint
954      snapshot file was missing some ad-variables,
955      but no warning issued by TAF
956    
957    checkpoint52a_pre
958    o some bug fixes for #undef REAL4_IS_SLOW
959    
960    checkpoint52 = ecco_c52_e35
961    o after testing adjoints of checkpoint51u_post
962    
963    checkpoint51u_post
964    o this is the post-merge tag of the ecco-branch
965      (needs another clean checkout and re-testing)
966    o various natl_box_adjoint configs and results
967      but no input fields
968    o obcs adjoint not yet merged!
969    o adding ECCO global 1x1 and 2x2 degree configs
970    o updated/extended some store directives for seaice
971    o pkg/ecco now containes ecco-specific part of cost function
972    o top level routines the_main_loop, forward_step
973      supersede those in model/src/
974      previous input data.cost now in data.ecco
975      (new namelist ecco_cost_nml)
976    o in ctrl/ cleaned some cross-dependencies and updated CPP options
977    
978    checkpoint51t_post
979    o this is the pre-merge tag of the ecco-branch
980    
981    checkpoint51s_post
982    o cleanup: removed various obsolete #define-s
983    o pkg/grdchk
984      - renamed 'ph-grd 3' to 'grad-res'
985      - merged from ecco-branch
986        (remaining bug fixes for obcs gradient checks)
987      - additional high-precision output for testreport
988        (grep for 'precision_grdchk_result')
989    
990    checkpoint51r_post
991    o cleaned up or removed CPP_OPTIONS.h files
992    o updated results for some of the tests to reflect the new
993      optfiles (-ieee: -O0 instead of -O3)
994    
995    checkpoint51q_post
996    o cd_code:
997      - moved cd_scheme.F -> cd_code_scheme.F
998      - separate read_checkpoint from cd_code_ini_vars.F
999      - separated cd_code part from write_checkpoint
1000      - updated AD_SOURCE, generated .flow
1001      - added CD_CODE_VARS.h to the_main_loop
1002      - Moving cd_code specific store dir.s to pkg/cd_code
1003    o ctrl package totally restructured
1004      - pack/unpack now optional and decoupled from
1005        xx_/adxx_ I/O
1006      - ctrl_pack/unpack cleaned
1007        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1008      - confined inclusion of AD_CONFIG.h to where necessary.
1009    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1010    
1011    checkpoint51p_post
1012    o create initial cd_code package
1013      - WARNING: the initialization of fields within packages
1014        is broken because INI_FIELDS (where READ_CHECKPOINT is
1015        called) is called *before* PACKAGES_INIT_VARIABLES.
1016        This seems to be backwards since
1017        1) its important to initially zero the entire field including
1018           the "halo" region
1019        2) zeroing needs to be done *before* reading pickup info
1020           and the pickup call might or might not happen in any
1021           particular run
1022      - this needs an overhaul for R2
1023    o cleanup verification/*/code/GMREDI_OPTIONS.h
1024    o cleanup testreport
1025    
1026    checkpoint51o_post
1027    o bringing AD-related verif's up to date with genmake2
1028      - carbon/
1029      - global_ocean.90x40x15/
1030      - hs.94.1x64x5/
1031      - (front_relax/ )
1032    o (more) consistent directory structure for AD-related verif.'s
1033    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1034    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1035    o bug fix in find_alpha.F for MDJWF:
1036      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1037        change rho -> rho-rhoConst
1038      - replace call find_rho to find_rhonum
1039    o initialisation of rFlx extended to full array (required by TAF)
1040      and shifted to thermodynamics
1041    o removed PTRACERS.h in ptracers routine
1042    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1043    o Correcting initialisations for fVerU, fVerV.
1044    o helping TAF to recognize dependency on kUp for
1045      fVerU, fVerV
1046    o Replacing delZ by delR in pkg/ctrl/
1047    checkpoint51o_pre
1048    
1049    o undid all of cp51 pending some cleanups and discussion
1050    o added the [#include "AD_CONFIG.h"] statement to all files that need
1051       it for adjoint/tl #defines
1052     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1053     o removed tools/genmake since it no longer works
1054    
1055    checkpoint51n_post
1056    o modifications to make FREEZE flux visible to pkg/kpp
1057      - moved surfaceTendencyTice from pkg/seaice to main code
1058      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1059      - subroutine FREEZE now limits only surface temperature
1060        (this means new output.txt for global_ocean.90x40x15,
1061         global_ocean.cs32x15, and global_with_exf)
1062    o added surface flux output variables to TIMEAVE_STATVARS
1063    
1064    checkpoint51n_pre
1065    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1066    o added [#include "AD_CONFIG.h"] to all files that use the following
1067      defines:
1068      - ALLOW_ADJOINT_RUN
1069      - ALLOW_TANGENTLINEAR_RUN
1070      - ALLOW_ECCO_OPTIMIZATION
1071    
1072    checkpoint51m_post
1073    o incorporating changes to get TAMC/TAF working in genmake2
1074      - added new TAMC/TAF targets to the Makefile
1075      - various cleanups related to package handling
1076      - these changes should have no impact on the forward model
1077    
1078    checkpoint51l_post
1079    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1080     - faster algorithm for cal_addtime.F
1081     - higher precision arithmetic, where needed
1082     - pkg/exf *startdate variables changed from calendar date to
1083       model integration time
1084    
1085    checkpoint51l_pre
1086    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1087    o enable to apply restoring on S & T only in a latitude band.
1088    o update output (external_forcing_surf modif. change truncation errors)
1089       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1090    
1091    checkpoint51k_post
1092    o change default to: useNHMTerms=.FALSE.
1093     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1094       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1095     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1096        exp1, ideal_2D_oce
1097     - change data file of oceanic exp (leave the results unchanged for now)
1098       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1099    o set gravitySign automatically according to the vertical coordinate used
1100      (and change sign: back to "logical" value: +1 when R increases downward)
1101    o added an include barrier to the default CPP_OPTIONS.h and
1102      removed the #include "PACKAGES_CONFIG.h" from it
1103    o fix a bug in mom_fluxform (from chk51j_post)
1104    
1105    checkpoint51j_post
1106    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1107    o adjusted some flow directives (dynamics, thermodynamics)
1108    o added cubed-sphere case to test cost function
1109    o heckpoint_lev?_directives.h now include
1110      pkg-specific directives, whenever those are enabled.
1111    o Moving pkg-specific flow directives to corresponding pkg
1112      Moving pkg-specific differentiation list to corresponding pkg
1113      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1114      ---> conventions are
1115           - pkg_ad.flow
1116           - pkg_ad_diff.list
1117           - pkg_ad_check_lev?_dir.h
1118    
1119    checkpoint51i_post
1120    o merge of the branch-genmake2
1121      - knowingly breaks the older genmake
1122      - automatic generation of all ALLOW_${PKG_NAME} defines
1123      - new testreport supersedes older testscript
1124    o large number of package inclusion and header cleanups
1125    checkpoint51i_pre
1126    
1127    o new output for adjoin of global ocean vector invariant
1128    o fix for checkpoint of thermodynamic seaice and bulk_force
1129    o Steph gchem various cleanups
1130    
1131    checkpoint 51h_pre
1132    o fixed some single quotes
1133    o modify gchem pkg to be more versatile
1134    o modifications to clean up dic pkg
1135    o add pkg/cfc
1136    
1137    checkpoint51g_post
1138    o provide links for ARPACK and ADM*TLM
1139    o start removing verification/vero/
1140    o update AD-related stuff
1141      (in particular some IF-statements in model/src/ routines)
1142    o adding to verification/global_ocean.90x40x15/ adjoint of
1143      vector invariant setup
1144    
1145    checkpoint51f_post
1146    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1147    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1148      of tracer Green's fucntions for ocean inversion project.
1149    
1150    checkpoint51f_pre
1151    o Added on-the-fly spatial interpolation capability
1152        "USE_EXF_INTERPOLATION" to pkg/exf.
1153      - This is a temporary Cartesian-grid hack until
1154        the super-duper ESMF coupler becomes available.
1155      - See verification/global_with_exf/README for usage example.
1156      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1157        flags and modified pkg/seaice accordingly.
1158    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1159        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1160        non-local transport term.
1161    
1162    checkpoint51e_post
1163    o pkg/mom_vecinv:
1164      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1165      - add time-ave diagnostic of vorticity advection.
1166    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1167    o atmospheric geopotential: - include water vapor effect;
1168                                - use p^kappa in p* scaling.
1169    o land pkg: read initial state from files.
1170    o AIM : add stratospheric drag in the upper level
1171    
1172    checkpoint51d_post
1173    o change function ILNBLNK (=> last non-blank char.) to return zero
1174      (instead of the string length) when the string. char is empty
1175    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1176    o modif's to restore TAMC compatibility
1177      - avoid "_d" constructs in PARAMETER declarations
1178      - avoid interrupting lines by comment lines
1179    o Use cluster local disks for purely local I/O
1180      vs. globally visible disks needed for ctrl stuff
1181      (merged from ecco-branch)
1182      - new active_file_loc... and mdsio_..._loc routines
1183      - affected packages: autodiff, ctrl, grdchk, mdsio
1184    
1185    checkpoint51c_post
1186    o introducing integer flag debugLevel
1187      - debLevZero: suppress all output
1188      - debLevA: standard
1189      - debLevB: equivalent to current debugMode=.TRUE.
1190    o introducing pathname variable mdsioLocalDir for mdsio
1191      that can be specified at runtime
1192      (relevant for cluster I/O to local disk)
1193    `
1194    >>>checkpoint51b_post
1195    adjoint of ptracers
1196    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1197    o extended state in checkpoint_lev?, etc.
1198    o alternative ctrl/cost with tr1 or ptracer
1199    o new comlev1_bibj_ptracers
1200    o new ptracers.flow
1201    o made ptracers_forcing same as external_forcing_s
1202    o added verification for adjoint with ptracers
1203      - adm. grdchk fail so far
1204      - tlm. grdchk OK
1205      - checked tapelev/comlev recomputations: OK
1206    <<<checkpoint51b_pre
1207    
1208    checkpoint51a_post
1209    o added code for biogeochemistry package
1210      - new pkgs: dic, gchem
1211      - new subroutine in ptracers
1212    o modify code for biogeo packages
1213      - in model/src and pkg/ptracers
1214    
1215    checkpoint51
1216    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1217      - autodiff, ctrl, exf, grdchk, seaice
1218      kept separate packages
1219      - cost, ecco, obcs
1220    o updating verification/internal_wave, verification/lab_sea
1221      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1222    
1223    checkpoint50i_post
1224    o Preparing next differentiable checkpoint and sync
1225      of MAIN vs. ecco-branch
1226      - 1st step: this one is differentiable
1227      - 2nd step: next(! not this) checkpoint will have updated packages
1228                  from ecco-branch)
1229    
1230    checkpoint50h_post
1231    o new package "land": provide surface BC for AIM.
1232    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1233    o AIM: use true log-P extrapolation for near surface temp (= as in
1234        F.Molteni paper) ; update aim.5l_cs output.
1235    o New variable in PARM03 for more flexible pickups
1236    o somewhat cleaned package initialisation sequence for
1237      ctrl/ cost/ ecco/ in packages_... routines
1238    
1239    checkpoint50g_post
1240    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1241      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1242      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1243        made the default because of faster convergence than ADI
1244    
1245    checkpoint50f_post
1246    o exf totally restructured
1247      - replaced all exf_set_ routines by one generic exf_set_gen.F
1248        and made sure it's still differentiable
1249      - split exf_getffields.F into new exf_bulkformulae.F
1250      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1251      - updated adjoint/makefile and relevant verif. accordingly
1252    
1253    checkpoint50f_pre
1254     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1255          + change Evap over land. (update aim.5l_cs output)
1256     o added missing .cvsignores and made uniform across expts
1257     o changed configuration of tidal_basin_2d expt
1258     o added pkg/debug functions for tracing code in fatal crashes
1259     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1260     o new fn in pkg/monitor to stop model if solution grows too big
1261     o removed lots of single quotes from comments
1262    
1263    checkpoint50e_post
1264    o make KPP work with PTRACERS
1265     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1266       nearly a copy of kpp_transport_s
1267     - there is no analogue to SurfaceTendencyS, so I have to use
1268       gPtr(of the surface layer) instead
1269    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1270    checkpoint50e_pre
1271    
1272    checkpoint50d_post
1273    o change kpp output from multiple-record state files to single-record state
1274      files analogous to write_state.F
1275    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1276      analogous to the cg2d-related output.
1277    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1278      so that writing to internal file fn (with length 512) fails.
1279    checkpoint50d_pre
1280    
1281    checkpoint50c_post
1282    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1283    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1284    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1285    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1286    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1287    
1288    checkpoint50c_pre
1289    Merging from release1_p13:
1290    o bug fix for pkg/seaice dynamic solver
1291    o Added SEAICE_initialHEFF to pkg/seaice
1292    
1293    checkpoint50b_post
1294    o store u*,v* in gU,V instead of in guNm1,gvNm1
1295    o in order to put the momForcing out of the Adams-Bashforth:
1296      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1297      to timestep.F
1298    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1299    o re-generate output for highly sensitive test-exp:
1300       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1301    
1302    checkpoint50b_pre
1303    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1304    o corrected CPP option mismatch in exf_Bulk... functions for case
1305      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1306    
1307    checkpoint50a_post
1308    o Bug fix for merging between c50 and KPP.
1309      ikey was passed from thermodynamics to kpp_calc via
1310      common block rather than being recomputed in kpp_calc,
1311      in contradiction with new key itdkey.
1312      New key ikppkey created, and tamc.h headers updated.
1313    
1314    checkpoint50
1315    - 2nd step of merge with ecco-branch:
1316      merge changes in ecco-branch back into main trunk
1317    - bug fix in find_alpha
1318    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1319    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1320    - merged some sliced AD support routines
1321    
1322    checkpoint49
1323    merged from ecco-branch:
1324    o exf:
1325      - Enable initialisation of forcing fields to constant
1326        (runtime) values.
1327      - in exf_getffields.F
1328        Reduce i-/j-loop to interior domain, discarding overlaps.
1329        That also fixes wrong TAF-key computations for key_1, key_2
1330        with bulf formulae.
1331      - exf_init.F modify #ifdef for exf_init_evap
1332      - exf_getffieldrec.F, ctrl_getrec.F
1333        The following INT-usages are not safe:
1334          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1335          fldcount = int(fldsecs/fldperiod) + 1
1336        and were modified.
1337    o autodiff: checkpoint_lev...
1338      - updated storing for bulk formulae (some arrays were missing)
1339      - added state for seaice package
1340      - synchronized with main branch
1341    o DIVA:
1342      Modif.s in
1343      - the_main_loop.F
1344      - the_model_main.F
1345      and added cost_final_restore.F cost_final_store.F
1346      o With these changes, it is possible to fully separate
1347        the first forward run to compute the cost function (mdthe_main_loop)
1348        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1349        into separate model executions.
1350        This enables better tuning of DIVA to given queue sizes.
1351      o Loss of cost function value in consecutive DIVA runs is
1352        fixed by storing to 'costfinal' file.
1353      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1354        beginning/end of adjoint integration is accounted for.
1355      The current changes apply to TAF-1.4.26.
1356      TAF has one remaining bug, requiring one manual change
1357      (see MITgcm manual).
1358    o cal: synchronized between MAIN and ecco-branch
1359    
1360    checkpoint48i_post
1361    o Changes to restore differentiability of code w.r.t. previous tag
1362      (mostly adding new routines to make list and replacing
1363      pressure by totPhiHyd).
1364    o Updated and merged grdchk package
1365      - has both ADM and TLM checks
1366      - works for single- and multi-proc.
1367      - output cleaned
1368      - worked successfully for parallel DIVA
1369    o genmake:
1370      - Adding -platform=SP4
1371      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1372    o Modif. for DIVA:
1373      ctrl_unpack should not be called in intermediate DIVA interval.
1374      (similar thing would apply for active files such as
1375      tbar, sbar, psbar, which should not be reinitialised;
1376      only relevant for ecco-branch)
1377    
1378    checkpoint48h_post
1379    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1380    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1381    o Added SEAICE_initialHEFF to pkg/seaice
1382    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1383    
1384    checkpoint48g_post
1385    --- EOS:
1386    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1387      store total Potential in totPhyHyd for diagnostics & EOS.
1388    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1389    --- Pressure/geopotential gradient:
1390    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1391    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1392      ( changes results of global_ocean_pressure )
1393    o NLFS + z-coord.: add eta*Rho' contribution.
1394    o accurate phiHyd when using interface-W at the middle between 2 centers
1395     ( changes results of ideal_2D_oce )
1396    o includes r* 2nd term in potential gradient.
1397    
1398    checkpoint48f_post
1399    Merging from release1_p12:
1400    o Modifications for using pkg/exf with pkg/seaice
1401      - improved description of the various forcing configurations
1402      - added basic radiation bulk formulae to pkg/exf
1403      - units/sign fix for evap computation in exf_getffields.F
1404      - updated verification/global_with_exf/results/output.txt
1405    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1406      (SBO) core products, including oceanic mass, center-of-mass,
1407      angular, and bottom pressure (see pkg/sbo/README.sbo).
1408    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1409      to avoid negative values in shallow regions.
1410      - updated verification/natl_box/results/output.txt
1411      - updated verification/lab_sea/results/output.txt
1412    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1413    o Added useSingleCpuIO option (see PARAMS.h).
1414    o Updated useSingleCpuIO option in mdsio_writefield.F to
1415      work with multi-field files, e.g., for single-file pickup.
1416    o pkg/seaice:
1417      - bug fix in growth.F: QNET for no shortwave case
1418      - added HeffFile for specifying initial sea-ice thickness
1419      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1420    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1421      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1422    o pkg/seaice:
1423      - adjoint-friendly modifications
1424      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1425    
1426    checkpoint48e_post
1427    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1428    o dynamics: change definition of computational domain & adapt mom_fluxform
1429      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1430    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1431        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1432        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1433        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1434        inverted_barometer solid-body.cs-32x32x1
1435      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1436    
1437    checkpoint48d_post
1438    o in preparation for r*:
1439     a) use pre-computed gradient of hydrostatic potential:
1440        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1441     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1442        => affects results of glob_oce_pressure (different truncation error)  
1443      update output.txt of ideal_2D_oce & global_ocean_pressure
1444    
1445    checkpoint48d_pre
1446    o in preparation for r*:
1447      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1448      pass the 2 comp. of the grad. as arguments to momentum S/R.
1449      but for the moment, only used if it does not change the results.
1450    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1451    
1452    checkpoint48c_post
1453    Modifications in treatment of initial flux forcing controls
1454    to avoid extra storing of flux fields.
1455    
1456    checkpoint48c_pre
1457    o Added tidal_basin_2d experiment (currently 1D!)
1458    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1459    
1460    checkpoint48b_post
1461    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1462     (modification to pressure gradient not yet implemented)
1463    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1464      (for U & V) that are used for vertical advection of momentum.
1465    
1466  checkpoint48a_post  checkpoint48a_post
1467  o In preparation for r*, use temp. array to compute vertical transport  o In preparation for r*, use temp. array to compute vertical transport
1468     in flux-form momentum pkg. => change results of few test-exp.     in flux-form momentum pkg. => change results of few test-exp.

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