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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.513 by jmc, Wed Jul 13 00:50:58 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 cos & sin of grid-direction orientation angle (curvilinear grid only,
8       for output and interpolation of input fields onto model grid)
9    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
10       Affects results of exp. rotating_tank ; update output.txt.
11    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
12          and taking the square quantity and/or using a fraction-weight field.
13    o fix aim_diagnostics_init.F mate numbers.
14    o add mnc output capability to diagnostics/diagstat and update
15      our cvsignore files for the ACSII output generated
16    
17    checkpoint57k_post
18    o lab_sea now uses diagnostics package and provides a suite of
19      new EXF diagnostics output.
20    
21    checkpoint57j_post
22    o exf
23      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
24        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
25        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
26      * extended diagnostics output
27        - now includes all EXF variables
28        - hs, hl moved to common block
29        - separate S/R for diagnostics, called after ctrl vector is added
30        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
31        - EXFqnet contains true Qnet (i.e. includes qsw)
32      * updated verif. lab_sea, global_with_exf
33      * Rearranging hflux (exf_mapfields -> exf_getforcing)
34        to ensure that diagnostics sees a true EXFqnet
35    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
36    o diagnostics pkg: change pointers so that 1 diagnostic can be used
37      several times with different frequencies.
38    o mnc-ify the thsice package as requested by Daniel Enderton
39      - the monitor--MNC output needs work
40      - many attributes need to be added (most are currently blank)
41    o mnc-ify theaim_v23 package as requested by Daniel Enderton
42      - many attributes need to be added (most are currently blank)
43    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
44    o add Sadourny like discretization to the 4th.O vorticity advection scheme
45    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
46      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
47         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
48    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
49     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
50    
51    checkpoint57i_post
52    o Diagnostics package was changed: diagnostic allocation is now deactivated
53      by setting an empty file name in the namelist (used to be by setting 0 frequency)
54    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
55      add 1rst Order upwind vertical Shear.
56    o add a quick fix for A/B checkpointing in OFFLINE mode
57    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
58      end-run around the C/Fortran linking horror in eesup/src/timers.F
59    o added pkg/runclock: allows user to terminate run based on wall clock
60    o added non-hydrostatic scaling parameter: nh_am2
61    o pkg/my82: futile attempt to make results compiler-independent by adding
62      some "_d 0", etc. no effect.
63    o for mnc output, fill the 'T' coordinate var with myTime and create a
64      separate 'iter' variable for iteration count
65    o pkg/diagnostics:
66      add new capability: output of Global/Regional & per-level statistics ;
67      tested against monitor output (including land & thSIce) on various exp.
68    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
69    
70    checkpoint57h_done
71      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
72      data.diagnostics, data.gchem, data.ptracers) is done.
73    
74    o pkg/diagnostics: prepare for Global/Regional statistics.
75      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
76    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
77      and rename it: DIFFERENT_MULTIPLE
78    
79    checkpoint57h_post
80    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
81    o pkg/diagnostics: change output frequency, now in seconds (instead
82      of Nb of iterations). This requires to change data.diagnostics.
83    checkpoint57h_pre
84    
85    o in mnc, let the user create the output dir if both mnc_outdir_date
86      and mnc_outdir_num are false
87    o add fflags() to pkg/diagnostics which allows one to specify, on a
88      per-file basis, the file precision [default behavior is unchanged]
89    o added diagnostics to pkg/kpp, including computation of mixed layer
90      depth based on a temperature/density criterion
91    o updated verification/natl_box to test the new pkg/kpp diagnostics
92    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
93    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
94    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
95      not mnc -- this mistake was found by JMC and is now corrected
96    
97    checkpoint57g_post
98    o add Adams-Bashforth 3rd Order time stepping:
99      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
100      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
101    checkpoint57g_pre
102    
103    o make lambda[Theta,Salt]ClimRelax spatially varying
104      (default remains spatially uniform constant based on tau)
105    o added new control variables
106      * init. uVel, vVel, etanN
107      * lambda[Theta,Salt]ClimRelax
108    o separate masks used for ctrl_pack/unpack 'from write_grid' output
109      (suggested by G. Forget)
110    
111    checkpoint57f_post
112    o add parameter "baseTime" = model base time = time at iteration zero
113      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
114      account for baseTime shift
115    o move Coriolis arrays from PARAMS.h to GRID.h
116    checkpoint57f_pre
117    
118    o mnc-ifying the seaice package
119    o introduced an alternative length scale calculation for use in the limiting
120      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
121    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
122    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
123      as well as grad(vort3).  Made it compatible with both approximate form
124      for the cubed sphere and full form of these gradients.  Added flag
125      useFullLeith to select between approximate and full form.  
126    o add "d0" in getcon.F to reduce differences between compilers/platforms
127      update output.txt of exp. fizhi-gridalt-hs
128    o change port_rand funtion to allow to set the seed.
129    o fix obscure MNC bug involving conversion between reals and integers
130      - it caused no problems with certain (eg. gcc, ifc) compilers but the
131        new version is now more standards-compliant
132    o adjoint-related modifications
133      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
134      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
135      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
136    
137    checkpoint57e_post
138    o Adding eddy stress controls a la Ferreira et al.
139    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
140    
141    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
142      update output.txt of exp. fizhi-gridalt-hs
143    o add more "Z" dimensions and associated coordinate vars to MNC
144    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
145    o parameter calendarDumps: when set, approximate months (30-31 days) and years
146      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
147      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
148      months and years.  Requires pkg/cal.
149    o diagnostics: add pickup functionality
150      - off by default for backwards compatibility
151      - current version only uses MDSIO -- MNC will be added
152    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
153    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
154    
155    checkpoint57d_post
156    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
157    o modify verification/ideal_2D_oce so that it tests the creation of mnc
158      output from the diagnostics package
159    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
160    o make genmake2 more portable by using ".$FS" instead of ".f" for more
161      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
162    o add coordinate variables to the MNC output from the diagnostics package
163    o change MNC-flags default value: true when useMNC=TRUE
164    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
165      the ability (off by default) to read the grid information using MNC
166    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
167    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
168    o do snap-shot diagnostics at the middle of the time-interval (instead of
169      at the end).
170    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
171      new test for AIM with thSIce + slab-ocean
172    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
173    o move state variable diagnostics to the beginning of the time step ;
174      (note: still needs some work specially for snap-shot diagnostics)
175      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
176    
177    checkpoint57c_post
178    o Change testing option (-ieee) to get closer agreement between g77 & ifort
179    o generate new output.txt files on faulks with g77 & the new -ieee option
180    checkpoint57c_pre
181    
182    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
183      update output.txt of exp. global_ocean.90x40x15
184    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
185      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
186    o add saltFlux(+File) forcing capability with periodicExternalForcing
187    o allow to use pkg diagnostics for GM-Redi & ThSIce output
188    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
189    o improvements for the MNC output from DIAGNOSTICS:
190      - correct handling of the unlimitied dimension
191      - all dims now have associated coordinate variables
192      - variables located at U, V, and Corner ("Z") points are now written
193        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
194        *all* data points are output
195    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
196    o added pkg/seaice/seaice_monitor.F
197    o mdsio_readfield.F can now read files visible only to master MPI process.
198    o pkg/seaice: some test code for ice-modified ocean stress
199    o exf_getffields interpolation defaults to bilinear for all scalar forcing
200      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
201      spurious negative numbers for precipitation and humidity.  Will cause
202      some small numerical differences for integrations using pkg/exf/exf_interp.F.
203    o pkg/ctrl/
204      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
205        May be enabled via doPackDiag
206      *  introduce z-scaling of
207         + gradient (doZscalePack) and
208         + control (doZscaleUnpack)
209    o pkg/mdsio/
210      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
211      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
212    
213    checkpoint57b_post
214    o simplify options in diagnostics_fill arguments (remove weird combinations)
215    o fix MNC coordinate variables so that they now contain per-face index
216      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
217      general, EXCH2 grids are only aligned to a "local" coordinate system
218    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
219    o Implement instantaneous output within pkg diagnostics:
220      setting a negative frequency in data.diagnostics produces
221     "snap-shot" output (as opposed to time-average if freq > 0)
222    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
223      NOTE: change ptracer diagnostics name: use 2 characters to work with
224            more than 9 tracers. Add also diagnostics of advect & diffus flux.
225    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
226      becomes the coordinate variable for the 'T' dimension
227    o add CF-style coordinate variables to MNC
228      - just a first cut:  numbers are meaningless on the cubesphere and
229        missing along the T axis but otherwise it works!
230    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
231    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
232    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
233      this is based directly on what the model compute, so that the content of
234      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
235    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
236    o clean up build options files for SunOS, in particular
237      - remove -traditional from xmakedepend
238      - change -xarch=v9 to -xarch=native for f77
239      - restore use of make (not gmake)
240      - add CC=gcc if using g77
241    o changes per discussion of AM, JMC, & EH3 today:
242      - move redundant "grid" variables out of "state" -- in preparation of
243        creating proper CF-style coordinate variables and in recognition
244        that any/all grid variables can be easily copied (eg. w/NCO) from
245        the grid files into any of the other NetCDF files
246      - *always* output grid variables with MDSIO (this will eventually be
247        changed)
248      - output MNC grid file if useMNC is true
249    o every instance of _END_MASTER() has been found and replaced with
250      _END_MASTER( myThid ) in order to satisfy certain picky Sun
251      preprocessors
252    o re-arrange diagnostics pkg initialisation:
253     - allow each package to extend the available diagnostics list
254     - add some checking and fix small problems (multi-threaded, ...)
255     - new S/R diagnostics_fill (replace fill_diagnostics):
256       look through the short list of active diag. (instead of the long list)
257       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
258    
259    checkpoint57a_post
260    o this set of changes restores TAMC compatibility
261      tested for global_ocean.90x40x15 adjoint on trough
262      (what a pain)
263    
264    checkpoint57a_pre
265    o some modifs in tools/build_options for sunos
266    o call ctrl_pack for ctrl at end for optimcycle=0
267    
268    checkpoint57
269    o add horizontal bi-harmonic viscosity for vertical velocity
270      - new parameter viscA4W (defaults to viscA4)
271      - affects only non-hydrostatic code
272      - to be done: no-slip lateral boundary conditions
273    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
274    o implement Implicit Vertical advection for pTracers
275    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
276      (implemented also for implicit vertical diffusion & advection)
277    o OBCS: extend application of tracer open boundary conditions
278      to a strip beyond the boundary of width Olx/Oly
279    o add call monitor to TAF set of required calls (flow directives)
280      and include in natl_box_adjoint
281    o untangle a few ifdefs related to cost, ctrl, autodiff
282      untangel a few ALLOW_ECCO_OPTIMIZATION
283    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
284      (theta2, salt2 in ecco_cost_weights)
285    
286    checkpoint56c_post
287    o OBCS as control variables
288      - update ctrl_ad_diff.list, obcs_ad_diff.list
289      - remove balance of obcs controls from default
290      - fix index bug nobcs in ctrl_init
291      - fix dummy fields filen in ctrl_pack
292      - add dummy weights for obcs
293    o lsopt: comment out fort.94 output
294    o optim:
295      - remove unnecessary header files
296      - adjusted namelists
297      - add xerbla.F to Makefile
298    o exf:
299      - multiple modifications of exf_check_range
300      - unit change in exf_init_runoff from [m/year] to [m/s]
301    o mdsio:
302      - i/o-vector change debugLevel from debLevA to debLevB
303    
304    checkpoint56b_post
305    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
306      is called from DO_THE_MODEL_IO
307      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
308      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
309      - clean up PTRACERS_WRITE_TIMEAVE a little
310    o add another verification experiment that tests both the cfc-pkg and
311      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
312      reactive tendencies treated inline with regular timestepping
313    o testreport previously did a lousy job of comparing small numbers, so
314      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
315      implemented in the little c-progam tmp_cmpnum.c which is embedded in
316      testreport.
317    o ptracers_monitor: bug fix for MPI
318    
319    checkpoint56a_post
320    o GCHEM: finish reorganizating the package
321      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
322        (introduces another 3D-array for each passive tracer, but only if
323        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
324        gchemTendency is not needed because the timestep is done separately)
325      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
326      - GCHEM is now---more or less cleanly---separate from PTRACERS
327      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
328        so clear to me how that should be done in a general way.
329    o CFC: improve formatting of output in CFC_ATMOS
330    o PTRACERS:
331      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
332        that ALL experiments with ptracers enable can be checked. This makes
333        GCHEM_MONITOR obsolete.
334      - include a runtime parameter PTRACERS_monitorFreq that defaults to
335        monitorFreq
336      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
337    o add PTRACERS (PTR0[1-5]) to testreport output
338    o exf_check_range:
339      * default changed to .TRUE.
340      * will check values for niter0 if debLevA, every timestep if debLevB
341      * STOP in exf_check_range if 'out of range'
342      * range chosen generous to allow for potential extema
343      TBD: a version with stricter range
344           permitted range would be runtime parameters
345    o GMredi:
346      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
347      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
348      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
349    o GCHEM:
350      - move call to GCHEM_FORCING_SEP, so that it is now called before
351        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
352      - introduced a useGCHEM runtime flag and applied it everywhere.
353      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
354        this flag is now only visible within GCHEM-pkg routines.
355      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
356        be replaced by a 3D array that is computed before thermodynamics; for
357        this, the tracer ID iTracer had to be included into the parameter list
358        of ptracers_forcing
359      - set up forward_step to call gchem_forcing, that will replace
360        gchem_forcing_int in ptracers_forcing
361      - cleaning up
362    o small cleaning of exch2: remove files that are also in eesupp/src
363    
364    checkpoint56
365    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
366    o mnc: cleanup "full" files--fixes out-of-memory problem
367    o ECCO-GODAE
368      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
369      * fully merged and updated from SIO code
370        windstress sign change affects
371        - exf_inscal_[u/v]stress
372        - sign of xx_tau[u/v] adjustments
373        - signs in cost_scat
374      * ctrl_get_gen: avoid update of tau[u/v] for first few days
375      * natl_box_adjoint updated and compressed
376      * 2-level checkpoint switch added
377        (tested in EXP. 1 of natl_box_adjoint)
378      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
379    o SVD
380      * first complete, non-hacked version for SVD calculations
381      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
382        performed via direct access files admtlm_vector.it????
383        (via ctrl_[un]pack)
384      * optimcycle is used for ARPACK iteration counter
385        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
386      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
387        and add linear transforms where necessary
388      * controls are initial/final SST, SSS (can be extended; need to check
389        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
390    o mdsio: filename info to both stderr, stdout
391    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
392      from sign change
393    
394    checkpoint55j_post
395    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
396      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
397    o add consistent build directories and .cvsignore files to verification
398    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
399    o make all subroutines 30 or less characters in length for certain older
400      compilers to work (a thorough search only turns up two routines in
401      pkg/ptracers)
402    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
403      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
404    
405    checkpoint55i_post
406    o change arrays for total vertical diffusivity (2.D if explicit,
407      3.D if implicit) ; each ptracer uses its own background value.
408    o added mnc/NetCDF output capability to ocn_compon_interf
409      - added bits to verification/cpl_aim+ocn so that it can run on
410        ITRDA and other clusters without the mpirun "-wd" option
411    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
412      configuration
413    o give MNC the ability to create additional files rather than
414      exceeding a specified file size limit "MNC_MAX_FILESIZE"
415      - the default is just less than 2GB which is a practical limit
416        on many systems
417    o Compute the non-local term using either KPP vertical diffusivity (=default)
418       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
419    
420    checkpoint55h_post
421    o add verification test "vermix"
422    o remove all the *_ioinc flags and replace with the single global
423      outputTypesInclusive flag
424    o allow to set a vertical profile of vertical diffusivity for T & S
425    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
426    o useMNC moved from data.mnc to data.pkg
427    
428    checkpoint55g_post
429    o Renaming carbon AD experiments to comply with testreport conventions
430    o Updating adjoint of Held-Suarez hs94.1x64x5
431    o Fixing directives for non-ECCO forward_step, after ECCO directives
432      have been fixed to avoid recomp. of do_oceanic_phys
433      Works well for global_ocean.90x40x15,
434      but recomp. issue remains for carbon
435    o Updating adjoint output for natl_box_adjoint after
436      pkg/ecco has been modified (see taga c55d_post)
437    
438    checkpoint55f_post
439    o rename to timeave_init_fixed
440    
441    checkpoint55e_post
442    o some delicate re-shuffle of store directives to avoid one
443      extra call of do_oceanic_physics
444      affects ecco_the_main_loop.F, do_oceanic_physics.F
445      checkpoint_lev1_directives.h
446    o NB: this may break global_ocean adjoint temporarily,
447      but it is clear how to fix it. Will do later, need this now.
448    
449    checkpoint55d_post
450    o ECCO specific cost function terms (up-to-date with 1x1 runs)
451    o ecco_cost_weights is modified to 1x1 runs
452    o modifs to allow observations to be read in as
453      single file or yearly files
454    o enable to read exf forcing fields as either
455      single file or yearly files (flag useExfYearlyFields)
456    checkpoint55d_pre
457    
458    o switch between 2-level and 3-level checkpointing
459    o add ability of MNC to write local and "partial" (eg. 2D slices where
460      the full 3D field is never actually stored) arrays to NetCDF files
461      with the correct (that is, the complete multi-dimensional) set of
462      array indicies
463      - used in mom_vecinv() to write the diagFreq output
464      - tested (demonstrated) in verification/aim.5l_cs
465    o further mnc-ification
466      - add verification/lab_sea to the list with mnc setups
467      - fix undefined mnc v-names in cd_code
468      - add kpp to mnc output (both snapshot and timeave)
469    o non-hydrostatic code
470      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
471        in calc_gw.F
472      - defaults to viscAh
473      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
474        friction or Leith) in non-hydrostatic mode, as long as there is
475        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
476    o pkg/cost
477      extend simple cost functions to treat time mean quantities
478      (T,U,V) via cost_accumulate_state from cost_tile
479    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
480        be 2 times larger than the minimum size the advection scheme requires.
481        now get a perfect conservation of salt in advect_cs test-exp (updated)
482    o GGL90 (Gaspar's TKE mixed layer)
483      - add horizontal diffusion of TKE, requires exchanges in
484        do_fields_blocking_exchanges, horizontal diffusivity is zero by
485        default. In OPA there is no horizontal diffusion of TKE but the
486        mixing coefficients are computed from a horizontal average of TKE of
487        6 points or so. I think that diffusion has a little more physical
488        justification.
489      - clean up ggl90_calc in the hope of reducing memory usage (this hope
490        was in vain)
491      - mask tke-variable in ggl90_init
492    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
493    o fix biharmonic diffusion on CS-grid.
494    o more obcs stuff
495      - added obcs_external_fields_load as an alternative to the EXF-pkg option
496        for reading boundary values. This routine is called from
497        obcs_prescribe_read
498      - updated obcs_check
499      - changed sponge layer relaxation parameter units for days to seconds
500      - turned off sponge layer by default
501      - changed argument list of OBCS_CALC to myTime+deltaTclock
502      - fixed about 35 bugs in obcs_external_fields_load
503    
504    checkpoint55c_post
505    o obcs stuff
506      - new runtime flags useOBCSprescribe, useOBCSbalance
507      - re-arranged obcs_calc
508      - moved exf_getobcs to obcs_prescibe_read
509        obcs_prescibe_read is called after ORLANSKI stuff
510        and independent of it (executable can contain all).
511      - updated obcs_check
512      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
513        These may be necessary only if tangential velocities are
514        prescribed at OB, not sure, needs testing.
515    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
516      which simplifies the calls and passes the ifc check-bounds test
517    
518    checkpoint55b_post
519    o add a 2D scalar, Z location, exchange_2 routine.
520    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
521      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
522      affects advect_cs results (for the wrong reason): update output.txt
523    o use a more standard discretization for biharmonic viscosity ;
524     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
525      affects results of dome set-up: update output.txt
526    o fix gad_advection.F (CubedSphere part), back to version 1.23
527    o fix bug in mom_vi_del2uv.F (CubedSphere part).
528    
529    checkpoint55a_post
530    o merged code to
531      * prescribe/read time-dependent open boundaries
532        (works in conjunction with exf, cal)
533      * sponge layer code for open boundaries
534      * each boundary N/S/E/W now has its own CPP option
535        (healthy for the adjoint)
536    
537    checkpoint55
538    o up-to-date adjoint of previous breaks
539      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
540      - global_ocean_ebm: adjoint still needs fix (TLM ok)
541      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
542      - carbon: * remove tr1-related adjoint verification
543                * add ptracer as control variable
544    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
545      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
546    
547    checkpoint54f_post
548    o in verification/carbin/ remove experiment related to
549      ALLOW_PASSIVE_TRACER (array tr1 etc)
550      code_ad/ input_ad/ results_ad
551    
552    o add two new packages
553      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
554        + subject to optimization (memory)
555      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
556        + subject to reordering (many GOTOs in the original code)
557        + so far opps is called for every (i,j) point, and then operates in
558          the vertical; one may want to reorder the scheme in order operate in
559          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
560          fields)
561    o overhaul of IO so that we now have flags for MDSIO and/or MNC
562      - all verification tests compile and run with linux_ia32_g77
563      - defaults are compatible with current input files--nothing
564        should change if you were not previously using MNC
565      - MNC output has been added in numerous places (eg. timeave)
566        but there are still a few writes not yet do-able with MNC
567        (this is in progress)
568      - flags now allow for either/or/both use of MDSIO and MNC and
569        documentation will soon follow
570      - numerous small formatting cleanups for ProTeX
571    o add version info (via BUILD_INFO.h) to MNC and stdout
572    
573    checkpoint54e_post
574    o add two new packages
575      - pp81 (Packanowski and Philander, 1981), Richardson number and
576        stratification dependent mixing
577      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
578      - these scheme operate in a similar manner as KPP (without ghat, of
579        course), however there is only one diffusivity that is used for both
580        temperature and salinity (and passive tracers)ç
581    o add offline package
582    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
583      provided by Stephanie Dutkiewicz
584    o genmake2: add ability to search for C compilers and cleanup test output
585      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
586    
587    checkpoint54d_post
588    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
589    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
590      leading to additional shift by 5 days each year of integration
591       (i.e. leading to considerable offset over the years)
592    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
593    o start with no AB and no initial filtering (staggerTimeStep):
594      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
595    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
596      (external loading & cpl import/export stay in forward_step.F)
597    o update coupling interface to work with new staggerTimeStep
598    o change MDSIO ptracers_pickup.
599    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
600    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
601    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
602    
603    checkpoint54c_post
604    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
605      this affects (truncation error) output.txt of test-exp:
606       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
607    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
608    o change Qnet to always be the net heat flux, (+upward).
609      affects (truncation error) output of natl_box exp.: updated
610    o define the max number of passive tracers in PTRACERS_SIZE.h
611    o start to test mnc routinely in exp0
612    o add sea-ice loading (sIceLoad) as a new forcing field.
613    
614    checkpoint54b_post
615    o add testreport "-j JOBS" option for parallel builds (tested and pretty
616       impressive on Altix and Opteron systems)
617    o diagnostics can now write NetCDF files through the mnc package
618    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
619    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
620    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
621      affects (truncation error) output of lab_sea & natl_box exp.: updated
622    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
623    
624    checkpoint54a_post
625    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
626    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
627    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
628    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
629      + internal_wave (shift in writing cg2d_ini_res)
630    checkpoint54a_pre
631    
632    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
633      - modified verification/lab_sea and natl_box_adjoint accordingly
634    
635    checkpoint54
636    checkpoint53g_post
637    o prepare splitting of thermodynamics: store convect.counter in common block
638    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
639      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
640    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
641    o new parameter "nShapS": allow to treat differently S from T (nShapT)
642    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
643    o restore adjointability
644    
645    checkpoint53f_post
646    o modifications that affect AIM experiment results (update output.txt):
647      - no advection of S at top interface Nr (pkg/generic_advdiff)
648      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
649    o AIM pkg:
650      - include stability function into surf.Flux derivative relative to Tsurf
651      - calculate clear-sky radiation & surface temp. change (for diagnostics)
652    
653    checkpoint53e_post
654    o merged cylindrical coord configuration
655    o added rotating_tank experiment
656    checkpoint53e_pre
657    
658    checkpoint53d_post
659    o faulks upgraded: re-generate output.txt that have changed:
660       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
661    o Added Bryan and Lewis, 1979, vertical diffusivity profile
662    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
663    o added Sadourny discretization of Coriolis
664      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
665      - re-enabled use of omega3 (useAbsVorticity)
666    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
667      vector-invariant equations
668      - note: does *NOT* yet use same variable visc. for no-slip BC's.
669    o recoded the lateral boundary conditions for non-hydrostatic w, this time
670      hopefully without new bugs
671      - still to do: biharmonic friction for non-hydrostatic w
672    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
673    o regenerated output for global_ocean_ebm (using -ieee)
674    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
675      of mom_common/
676      - simple re-arrangement of instructions within computing loop
677    checkpoint53d_pre
678    
679    checkpoint53c_post
680    o new version of coupler for AIM+thSIce and Ocean models
681     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
682     - land: change Evaporation of snow
683     - aim with thSIce: fix bug in snow-precip.
684    o changes to calc_gw.F
685     - bug fix for w^2 term near the bottom boundary
686     - (hopefully) improve the lateral slip boundary condtions for use with
687        partial/looped cells
688      - because the bug fix changes two verification experiments anyway (exp5
689        and plume on slope), change the lateral boundary condition from half slip
690        to the value of no_slip_sides
691    o ebm package wasnt quite up to the parallel task. Fixed that.
692    o Adjoint of EBM package + verification
693      * TLM OK
694      * ADM not sufficient accuracy yet (needs further testing)
695    
696    checkpoint53b_post
697    o Commiting new energy balance model to repository
698      * package is pkg/ebm
699      * verif. is verification/global_ocean_ebm
700      * references are in ebm_driver.F
701    C      * X. Wang, P. Stone and J. Marotzke, 1999:
702    C        Global thermohaline circulation. Part I:
703    C        Sensitivity to atmospheric moisture transport.
704    C        J. Climate 12(1), 71-82
705    C      * X. Wang, P. Stone and J. Marotzke, 1999:
706    C        Global thermohaline circulation. Part II:
707    C        Sensitivity with interactive transport.
708    C        J. Climate 12(1), 83-91
709    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
710    C        Destabilization of the thermohaline circulation
711    C        by atmospheric eddy transports.
712    C        J. Climate 7(12), 1870-1882
713    o Will need long integration testing.
714    checkpoint53b_pre
715    
716    o created pkg/mom_common in preparation for variable viscosity code
717    o renamed and split ini_mnc_io
718    o pkg/land: only liquid water can diffuse or run-off
719    o AIM using land: soil wetness availability account for snow
720    o added printMapIncludesZeros to EEPARMS namelist
721    
722    checkpoint53a_post
723    o restore TAMC compatiility for exf_constants.h
724      (no usage of _d in .h)
725    o Additional storing in KPP in an attempt to fix
726      TAMC problem with adjoint of KPP code.
727      (no success...)
728      Identical code works fine with TAF.
729    o Fixed verification/natl_box_adjoint experiments.
730      Initial conditions for Experiments 4 and 5 are now
731      set to "SEAICE_initialHEFF=0", which is more reasonable,
732      and hence gives results closer to that of Experiment 2.
733      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
734    
735    checkpoint53
736    o stable checkpoint with up to date adjoint
737      TLM tests only run for 1st grdchk at the moment. Its unclear if
738      this is a code problem or a problem with resetting code for g_
739      variables that is being autogenerated wrong.
740      Otherwise:
741       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
742       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
743         are both still in chaos following their security messes.
744    
745    checkpoint52n_post
746    o various build (mostly genmake2) changes including:
747      - ability to build/run more easily within Cygwin and MacOS X
748      - more complicated Makefiles with a stronger dependence on Gnu Make
749    o pkg/seaice modifications
750      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
751        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
752        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
753      - changed proxy for geostrophic velocity and updated
754        verification/lab_sea/results/* accordingly
755      - removed ADI dynamic solver from pkg/seaice
756      - replaced all occurrences of 1/CSTICE or 1/CSUICE
757        they caused a segmentation fault under certain circumstances
758      - removed unused field WATR
759    o bug fix in exf-package:
760      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
761         now reflect that.
762    o small fixes in the cal-package:
763      - set reference date to first of January for the 'model'-calendar
764      - failing of cal_CheckDate in cal_FullDate now actually results in a
765        warning
766    o small modifications in exf-package to increase flexibility:
767      - change climtempfreeze from a constant to a runtime parameter that
768        is specified in data.exf_clim (default = -1.9)
769      - introduce runtime parameter windstressmax (default = 2.0) that is
770        specified in data.exf
771    o fix in pkg/thsice:
772      - update Evap (Tsf changes) to be consistent with Latent heat flux
773      - maintain snow precipitation unchanged (even if Tsf >=0).
774     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
775    
776    checkpoint52m_post
777    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
778      this does not change any of the results, because myIter=0 in swfrac always
779      lead to jwtype=2 (the default anyway), but the call makes little sense
780      as a default
781    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
782    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
783      atmospheric model (AIM) to use it ; add a "slab ocean" component.
784    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
785    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
786    o extending useSingleCpuIO option to work with new exch2 I/O format
787      - old-style, missing-tile I/O is still accessible by defining CPP
788        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
789    o monitor package can write to NetCDF files and/or STDOUT
790    o fix re-definition bug in MNC_GRID_INIT_ALL()
791    o doc/api_reference added
792      - a framework for building an API Reference Manual using all
793        the "protex" comments embedded in the code
794      - see pkg/generic_advdiff, pkg/mnc for examples
795    o MNC:
796      - make myThid the last argument for all subroutines
797      - new default for the grid files: NO halos
798      - add useMNC and other run-time flags
799      - separate per-file-group handling of the unlimited dimension
800      - early initialization of MNC w/ flags read at the eeboot stage
801        and lookup tables set in initialize_fixed
802      - write all MNC output to a freshly-created directory
803    o thermodynamics sea-ice (thsice) is now tested with testreport.
804    o test exp. advect_cs: use the standard cs32 grid ; update output.
805    o Added functionality to grdchk:
806      pick global i,j,k position (or nearest wet) where to perform check.
807    
808    checkpoint52l_post
809    o new land formulation:
810      a) use ground enthalpy as prognostic variable to ensure exact
811         energy conservation.
812      b) account for water temperature and for latent heat of freezing
813         in all processes (rain, run-off, ground storage)
814      c) compute surface and ground temperature implicitly.
815    o aim_v23 modification for new land model:
816      a) Treat separately land / ocean / sea-ice surface fluxes
817         to allow implicit computation of land & sea-ice surface temp.
818      b) add snow precipitation.
819    checkpoint52l_pre
820    
821    o fix problem (when 1 tile is empty) in min/max monitor.
822    o fix bug in timeAve (u,vZetatave in common block)
823    o no restoring terms under ice for pkg/seaice
824    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
825    o bug fix for pkg/seaice pickups
826    o change MNC call locations and add coordinate attributes
827    o mask vorticity at the corner ; affects global_ocean.cs output
828    o fix ini_curvilinear_grid ; test CS experiments with mpi
829    o aim.5l_cs: modify sea-ice fraction input file ; update output
830    o exf: Adding simple range check routine for exf fields after read
831    
832    checkpoint52k_post
833    o removed top-level directory "diags"
834      - we migrated these functions to pkg/timeave a long time ago
835    o fixed bug introduced in pkg/monitor
836    o accuracy ctrlprec = 32 insuffient for gradient checks using
837      averaged fields (I/O via cost_averages)
838      -> use ctrl.h in active_file*.F to control I/O precision.
839    o paramter list of CALL ADTHE_MAIN_LOOP
840    o added initial do_the_model_io to ecco
841    o set all ...Freq to zero after cost_final
842      taveFreq, dumpFreq, pChkptFreq
843    o MAIN and ECCO differentiability restored
844    
845    checkpoint52j_post
846    o fix nchklev in tamc.h for global_ocean...
847    o Bringing flow and store directives up-to-date
848    o Really weird thing!
849      call do_the_model_io from the_main_loop with parameters
850      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
851      TAF places a faulty re-call of initialise_varia
852      after cost_final call which should not be there!
853    checkpoint52j_pre
854    
855    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
856      error messages
857    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
858    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
859      debug output
860    o modfied mdsio_writefield.F to handle non-global files under exch2
861    o update AIM Cubed-Sphere exp (aim.5l_cs):
862      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
863    o update AIM Equatorial Channel exp:
864      use standard aim_v23 pkg and change the SST fields to be more realistic.
865    o globalFile now works with exch2
866    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
867      mon_vort3.F to make exch2 friendly with >1 tile per cube face
868    o limit timeave output for hi-res integrations
869    
870    checkpoint52i_post
871    o removed CPP_EEOPTIONS.h from verification/*/code
872    o updated the tiling for global_ocean_pressure
873    checkpoint52i_pre
874    
875    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
876      the old pkg/aim).
877    
878    checkpoint52h_pre
879    o shortened offending lines in exch2_send_rx?.template
880    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
881    o genmake2: add build & execute test for NetCDF code
882    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
883      old grid files, moved CPP_EEMACROS.h to pkg/exch2
884    o added useSingleCPUIO flag to monitor.F and mon_out.F
885    o added temporary hack for sea-ice dynamics on the cube:
886      metric terms are ignored and it is assumed that
887      there is no sea-ice on cube faces 1, 2, 4, and 5.
888    
889    checkpoint52f_post
890    o added exch2 cube routines to pkg/exch2
891    o modified hs94.cs-32x32x5 to use it
892    o added new grid files to hs94.cs-32x32x5
893    checkpoint52f_pre
894    
895    checkpoint52e_post
896    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
897      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
898    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
899      to work with implicit vertical advection and AB ;
900    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
901    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
902     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
903    checkpoint52e_pre
904    
905    o fix bug in impldiff when Nr=1 or Nr=2.
906    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
907    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
908    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
909      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
910    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
911    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
912    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
913    
914    checkpoint52d_post
915    o re-tiled many expts to allow comparison in multi-processor mode
916      - updated output accordingly
917      - changed hs94.128x64x5 to use intial T from file rather than use the
918        random number generator
919    o add infrastructure in model routines for fizhi and gridalt packages
920    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
921    o changes to permit hi-res, cubed-sphere, configuration
922      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
923      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
924      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
925        of surface winds for the cube
926      (A verification experiment, based on global_ocean.cs32x15, but with
927       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
928       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
929       complete with example surface forcing files and matlab scripts to look
930       at the output and compare it with that of global_ocean.cs32x15.)
931    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
932       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
933       to conform to the common rule.
934    o check-in the first version of the coupler + interfaces for multi-components
935       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
936       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
937       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
938       - ocean and atmos. share the same horizontal grid (no interpolation).
939       - exchanges between component and coupler is done in forward_step
940    o new verification experiment, cpl_aim+ocn:
941       coupled ocean - AIM atmosphere on cs32 grid.
942    
943    checkpoint52d_pre
944    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
945    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
946    
947    checkpoint52c_post
948    o Fixing OPTIONS files for use of exf:
949      - ALLOW_ECCO not needed
950      - ECCO_CPPOPTIONS.h should not be included from
951        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
952        as has been the case in the past
953      - All cal/exf related options are currently set in
954        single header file. Should remain so until we
955        agree on a consistent new policy.
956    o Removed all CPP options for cal package.
957      cal has no more CPP options.
958    o modified STOREs in GAD_ADVECTION
959    o corrected key comp. for passkey
960    
961    checkpoint52b_post
962    o new version: "thsice" of thermodynamic sea-ice pkg:
963     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
964     - modify fluxes but do not change theta directly;
965     - light cleaning of bulk_force pkg (still needed with thsice).
966     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
967       + output_thsice.txt to test thsice & bulk_force pkgs.
968    o put back grid & coriolis monitor output.
969    checkpoint52b_pre
970    
971    o call "do_the_model_io" at the beginning (=> dump initial state)
972    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
973    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
974      (need info on NUMBER_OF_PTRACERS)
975    o missing PTRACERS headers in some routines
976    o default tamc.h in pkg/autodiff supposed to crash
977      to ensure proper customization
978    
979    checkpoint52a_post
980    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
981      - moved surfaceTendencyTice from pkg/seaice to main code
982      - subroutine FREEZE_SURFACE now limits only surface temperature
983        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
984        => new output.txt for global_ocean.cs32x15 & global_with_exf
985      - keep the old version of FREEZE for backward compatibility;
986        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
987      - corresponding modifs for TAF directives
988    o added surface flux output variables to TIMEAVE_STATVARS
989    o time-averaged output for pkg/ptracers
990    o fix problem with ECCO-related divided adjoint
991      snapshot file was missing some ad-variables,
992      but no warning issued by TAF
993    
994    checkpoint52a_pre
995    o some bug fixes for #undef REAL4_IS_SLOW
996    
997    checkpoint52 = ecco_c52_e35
998    o after testing adjoints of checkpoint51u_post
999    
1000    checkpoint51u_post
1001    o this is the post-merge tag of the ecco-branch
1002      (needs another clean checkout and re-testing)
1003    o various natl_box_adjoint configs and results
1004      but no input fields
1005    o obcs adjoint not yet merged!
1006    o adding ECCO global 1x1 and 2x2 degree configs
1007    o updated/extended some store directives for seaice
1008    o pkg/ecco now containes ecco-specific part of cost function
1009    o top level routines the_main_loop, forward_step
1010      supersede those in model/src/
1011      previous input data.cost now in data.ecco
1012      (new namelist ecco_cost_nml)
1013    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1014    
1015    checkpoint51t_post
1016    o this is the pre-merge tag of the ecco-branch
1017    
1018    checkpoint51s_post
1019    o cleanup: removed various obsolete #define-s
1020    o pkg/grdchk
1021      - renamed 'ph-grd 3' to 'grad-res'
1022      - merged from ecco-branch
1023        (remaining bug fixes for obcs gradient checks)
1024      - additional high-precision output for testreport
1025        (grep for 'precision_grdchk_result')
1026    
1027    checkpoint51r_post
1028    o cleaned up or removed CPP_OPTIONS.h files
1029    o updated results for some of the tests to reflect the new
1030      optfiles (-ieee: -O0 instead of -O3)
1031    
1032    checkpoint51q_post
1033    o cd_code:
1034      - moved cd_scheme.F -> cd_code_scheme.F
1035      - separate read_checkpoint from cd_code_ini_vars.F
1036      - separated cd_code part from write_checkpoint
1037      - updated AD_SOURCE, generated .flow
1038      - added CD_CODE_VARS.h to the_main_loop
1039      - Moving cd_code specific store dir.s to pkg/cd_code
1040    o ctrl package totally restructured
1041      - pack/unpack now optional and decoupled from
1042        xx_/adxx_ I/O
1043      - ctrl_pack/unpack cleaned
1044        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1045      - confined inclusion of AD_CONFIG.h to where necessary.
1046    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1047    
1048    checkpoint51p_post
1049    o create initial cd_code package
1050      - WARNING: the initialization of fields within packages
1051        is broken because INI_FIELDS (where READ_CHECKPOINT is
1052        called) is called *before* PACKAGES_INIT_VARIABLES.
1053        This seems to be backwards since
1054        1) its important to initially zero the entire field including
1055           the "halo" region
1056        2) zeroing needs to be done *before* reading pickup info
1057           and the pickup call might or might not happen in any
1058           particular run
1059      - this needs an overhaul for R2
1060    o cleanup verification/*/code/GMREDI_OPTIONS.h
1061    o cleanup testreport
1062    
1063    checkpoint51o_post
1064    o bringing AD-related verif's up to date with genmake2
1065      - carbon/
1066      - global_ocean.90x40x15/
1067      - hs.94.1x64x5/
1068      - (front_relax/ )
1069    o (more) consistent directory structure for AD-related verif.'s
1070    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1071    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1072    o bug fix in find_alpha.F for MDJWF:
1073      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1074        change rho -> rho-rhoConst
1075      - replace call find_rho to find_rhonum
1076    o initialisation of rFlx extended to full array (required by TAF)
1077      and shifted to thermodynamics
1078    o removed PTRACERS.h in ptracers routine
1079    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1080    o Correcting initialisations for fVerU, fVerV.
1081    o helping TAF to recognize dependency on kUp for
1082      fVerU, fVerV
1083    o Replacing delZ by delR in pkg/ctrl/
1084    checkpoint51o_pre
1085    
1086    o undid all of cp51 pending some cleanups and discussion
1087    o added the [#include "AD_CONFIG.h"] statement to all files that need
1088       it for adjoint/tl #defines
1089     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1090     o removed tools/genmake since it no longer works
1091    
1092    checkpoint51n_post
1093    o modifications to make FREEZE flux visible to pkg/kpp
1094      - moved surfaceTendencyTice from pkg/seaice to main code
1095      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1096      - subroutine FREEZE now limits only surface temperature
1097        (this means new output.txt for global_ocean.90x40x15,
1098         global_ocean.cs32x15, and global_with_exf)
1099    o added surface flux output variables to TIMEAVE_STATVARS
1100    
1101    checkpoint51n_pre
1102    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1103    o added [#include "AD_CONFIG.h"] to all files that use the following
1104      defines:
1105      - ALLOW_ADJOINT_RUN
1106      - ALLOW_TANGENTLINEAR_RUN
1107      - ALLOW_ECCO_OPTIMIZATION
1108    
1109    checkpoint51m_post
1110    o incorporating changes to get TAMC/TAF working in genmake2
1111      - added new TAMC/TAF targets to the Makefile
1112      - various cleanups related to package handling
1113      - these changes should have no impact on the forward model
1114    
1115    checkpoint51l_post
1116    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1117     - faster algorithm for cal_addtime.F
1118     - higher precision arithmetic, where needed
1119     - pkg/exf *startdate variables changed from calendar date to
1120       model integration time
1121    
1122    checkpoint51l_pre
1123    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1124    o enable to apply restoring on S & T only in a latitude band.
1125    o update output (external_forcing_surf modif. change truncation errors)
1126       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1127    
1128    checkpoint51k_post
1129    o change default to: useNHMTerms=.FALSE.
1130     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1131       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1132     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1133        exp1, ideal_2D_oce
1134     - change data file of oceanic exp (leave the results unchanged for now)
1135       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1136    o set gravitySign automatically according to the vertical coordinate used
1137      (and change sign: back to "logical" value: +1 when R increases downward)
1138    o added an include barrier to the default CPP_OPTIONS.h and
1139      removed the #include "PACKAGES_CONFIG.h" from it
1140    o fix a bug in mom_fluxform (from chk51j_post)
1141    
1142    checkpoint51j_post
1143    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1144    o adjusted some flow directives (dynamics, thermodynamics)
1145    o added cubed-sphere case to test cost function
1146    o heckpoint_lev?_directives.h now include
1147      pkg-specific directives, whenever those are enabled.
1148    o Moving pkg-specific flow directives to corresponding pkg
1149      Moving pkg-specific differentiation list to corresponding pkg
1150      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1151      ---> conventions are
1152           - pkg_ad.flow
1153           - pkg_ad_diff.list
1154           - pkg_ad_check_lev?_dir.h
1155    
1156    checkpoint51i_post
1157    o merge of the branch-genmake2
1158      - knowingly breaks the older genmake
1159      - automatic generation of all ALLOW_${PKG_NAME} defines
1160      - new testreport supersedes older testscript
1161    o large number of package inclusion and header cleanups
1162    checkpoint51i_pre
1163    
1164    o new output for adjoin of global ocean vector invariant
1165    o fix for checkpoint of thermodynamic seaice and bulk_force
1166    o Steph gchem various cleanups
1167    
1168    checkpoint 51h_pre
1169    o fixed some single quotes
1170    o modify gchem pkg to be more versatile
1171    o modifications to clean up dic pkg
1172    o add pkg/cfc
1173    
1174    checkpoint51g_post
1175    o provide links for ARPACK and ADM*TLM
1176    o start removing verification/vero/
1177    o update AD-related stuff
1178      (in particular some IF-statements in model/src/ routines)
1179    o adding to verification/global_ocean.90x40x15/ adjoint of
1180      vector invariant setup
1181    
1182    checkpoint51f_post
1183    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1184    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1185      of tracer Green's fucntions for ocean inversion project.
1186    
1187    checkpoint51f_pre
1188    o Added on-the-fly spatial interpolation capability
1189        "USE_EXF_INTERPOLATION" to pkg/exf.
1190      - This is a temporary Cartesian-grid hack until
1191        the super-duper ESMF coupler becomes available.
1192      - See verification/global_with_exf/README for usage example.
1193      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1194        flags and modified pkg/seaice accordingly.
1195    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1196        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1197        non-local transport term.
1198    
1199    checkpoint51e_post
1200    o pkg/mom_vecinv:
1201      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1202      - add time-ave diagnostic of vorticity advection.
1203    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1204    o atmospheric geopotential: - include water vapor effect;
1205                                - use p^kappa in p* scaling.
1206    o land pkg: read initial state from files.
1207    o AIM : add stratospheric drag in the upper level
1208    
1209    checkpoint51d_post
1210    o change function ILNBLNK (=> last non-blank char.) to return zero
1211      (instead of the string length) when the string. char is empty
1212    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1213    o modif's to restore TAMC compatibility
1214      - avoid "_d" constructs in PARAMETER declarations
1215      - avoid interrupting lines by comment lines
1216    o Use cluster local disks for purely local I/O
1217      vs. globally visible disks needed for ctrl stuff
1218      (merged from ecco-branch)
1219      - new active_file_loc... and mdsio_..._loc routines
1220      - affected packages: autodiff, ctrl, grdchk, mdsio
1221    
1222    checkpoint51c_post
1223    o introducing integer flag debugLevel
1224      - debLevZero: suppress all output
1225      - debLevA: standard
1226      - debLevB: equivalent to current debugMode=.TRUE.
1227    o introducing pathname variable mdsioLocalDir for mdsio
1228      that can be specified at runtime
1229      (relevant for cluster I/O to local disk)
1230    `
1231    >>>checkpoint51b_post
1232    adjoint of ptracers
1233    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1234    o extended state in checkpoint_lev?, etc.
1235    o alternative ctrl/cost with tr1 or ptracer
1236    o new comlev1_bibj_ptracers
1237    o new ptracers.flow
1238    o made ptracers_forcing same as external_forcing_s
1239    o added verification for adjoint with ptracers
1240      - adm. grdchk fail so far
1241      - tlm. grdchk OK
1242      - checked tapelev/comlev recomputations: OK
1243    <<<checkpoint51b_pre
1244    
1245    checkpoint51a_post
1246    o added code for biogeochemistry package
1247      - new pkgs: dic, gchem
1248      - new subroutine in ptracers
1249    o modify code for biogeo packages
1250      - in model/src and pkg/ptracers
1251    
1252    checkpoint51
1253    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1254      - autodiff, ctrl, exf, grdchk, seaice
1255      kept separate packages
1256      - cost, ecco, obcs
1257    o updating verification/internal_wave, verification/lab_sea
1258      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1259    
1260    checkpoint50i_post
1261    o Preparing next differentiable checkpoint and sync
1262      of MAIN vs. ecco-branch
1263      - 1st step: this one is differentiable
1264      - 2nd step: next(! not this) checkpoint will have updated packages
1265                  from ecco-branch)
1266    
1267    checkpoint50h_post
1268    o new package "land": provide surface BC for AIM.
1269    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1270    o AIM: use true log-P extrapolation for near surface temp (= as in
1271        F.Molteni paper) ; update aim.5l_cs output.
1272    o New variable in PARM03 for more flexible pickups
1273    o somewhat cleaned package initialisation sequence for
1274      ctrl/ cost/ ecco/ in packages_... routines
1275    
1276    checkpoint50g_post
1277    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1278      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1279      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1280        made the default because of faster convergence than ADI
1281    
1282    checkpoint50f_post
1283    o exf totally restructured
1284      - replaced all exf_set_ routines by one generic exf_set_gen.F
1285        and made sure it's still differentiable
1286      - split exf_getffields.F into new exf_bulkformulae.F
1287      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1288      - updated adjoint/makefile and relevant verif. accordingly
1289    
1290    checkpoint50f_pre
1291     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1292          + change Evap over land. (update aim.5l_cs output)
1293     o added missing .cvsignores and made uniform across expts
1294     o changed configuration of tidal_basin_2d expt
1295     o added pkg/debug functions for tracing code in fatal crashes
1296     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1297     o new fn in pkg/monitor to stop model if solution grows too big
1298     o removed lots of single quotes from comments
1299    
1300    checkpoint50e_post
1301    o make KPP work with PTRACERS
1302     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1303       nearly a copy of kpp_transport_s
1304     - there is no analogue to SurfaceTendencyS, so I have to use
1305       gPtr(of the surface layer) instead
1306    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1307    checkpoint50e_pre
1308    
1309    checkpoint50d_post
1310    o change kpp output from multiple-record state files to single-record state
1311      files analogous to write_state.F
1312    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1313      analogous to the cg2d-related output.
1314    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1315      so that writing to internal file fn (with length 512) fails.
1316    checkpoint50d_pre
1317    
1318    checkpoint50c_post
1319    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1320    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1321    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1322    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1323    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1324    
1325    checkpoint50c_pre
1326    Merging from release1_p13:
1327    o bug fix for pkg/seaice dynamic solver
1328    o Added SEAICE_initialHEFF to pkg/seaice
1329    
1330    checkpoint50b_post
1331    o store u*,v* in gU,V instead of in guNm1,gvNm1
1332    o in order to put the momForcing out of the Adams-Bashforth:
1333      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1334      to timestep.F
1335    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1336    o re-generate output for highly sensitive test-exp:
1337       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1338    
1339    checkpoint50b_pre
1340    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1341    o corrected CPP option mismatch in exf_Bulk... functions for case
1342      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1343    
1344    checkpoint50a_post
1345    o Bug fix for merging between c50 and KPP.
1346      ikey was passed from thermodynamics to kpp_calc via
1347      common block rather than being recomputed in kpp_calc,
1348      in contradiction with new key itdkey.
1349      New key ikppkey created, and tamc.h headers updated.
1350    
1351    checkpoint50
1352    - 2nd step of merge with ecco-branch:
1353      merge changes in ecco-branch back into main trunk
1354    - bug fix in find_alpha
1355    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1356    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1357    - merged some sliced AD support routines
1358    
1359    checkpoint49
1360    merged from ecco-branch:
1361    o exf:
1362      - Enable initialisation of forcing fields to constant
1363        (runtime) values.
1364      - in exf_getffields.F
1365        Reduce i-/j-loop to interior domain, discarding overlaps.
1366        That also fixes wrong TAF-key computations for key_1, key_2
1367        with bulf formulae.
1368      - exf_init.F modify #ifdef for exf_init_evap
1369      - exf_getffieldrec.F, ctrl_getrec.F
1370        The following INT-usages are not safe:
1371          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1372          fldcount = int(fldsecs/fldperiod) + 1
1373        and were modified.
1374    o autodiff: checkpoint_lev...
1375      - updated storing for bulk formulae (some arrays were missing)
1376      - added state for seaice package
1377      - synchronized with main branch
1378    o DIVA:
1379      Modif.s in
1380      - the_main_loop.F
1381      - the_model_main.F
1382      and added cost_final_restore.F cost_final_store.F
1383      o With these changes, it is possible to fully separate
1384        the first forward run to compute the cost function (mdthe_main_loop)
1385        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1386        into separate model executions.
1387        This enables better tuning of DIVA to given queue sizes.
1388      o Loss of cost function value in consecutive DIVA runs is
1389        fixed by storing to 'costfinal' file.
1390      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1391        beginning/end of adjoint integration is accounted for.
1392      The current changes apply to TAF-1.4.26.
1393      TAF has one remaining bug, requiring one manual change
1394      (see MITgcm manual).
1395    o cal: synchronized between MAIN and ecco-branch
1396    
1397    checkpoint48i_post
1398    o Changes to restore differentiability of code w.r.t. previous tag
1399      (mostly adding new routines to make list and replacing
1400      pressure by totPhiHyd).
1401    o Updated and merged grdchk package
1402      - has both ADM and TLM checks
1403      - works for single- and multi-proc.
1404      - output cleaned
1405      - worked successfully for parallel DIVA
1406    o genmake:
1407      - Adding -platform=SP4
1408      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1409    o Modif. for DIVA:
1410      ctrl_unpack should not be called in intermediate DIVA interval.
1411      (similar thing would apply for active files such as
1412      tbar, sbar, psbar, which should not be reinitialised;
1413      only relevant for ecco-branch)
1414    
1415    checkpoint48h_post
1416    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1417    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1418    o Added SEAICE_initialHEFF to pkg/seaice
1419    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1420    
1421    checkpoint48g_post
1422    --- EOS:
1423    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1424      store total Potential in totPhyHyd for diagnostics & EOS.
1425    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1426    --- Pressure/geopotential gradient:
1427    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1428    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1429      ( changes results of global_ocean_pressure )
1430    o NLFS + z-coord.: add eta*Rho' contribution.
1431    o accurate phiHyd when using interface-W at the middle between 2 centers
1432     ( changes results of ideal_2D_oce )
1433    o includes r* 2nd term in potential gradient.
1434    
1435    checkpoint48f_post
1436    Merging from release1_p12:
1437    o Modifications for using pkg/exf with pkg/seaice
1438      - improved description of the various forcing configurations
1439      - added basic radiation bulk formulae to pkg/exf
1440      - units/sign fix for evap computation in exf_getffields.F
1441      - updated verification/global_with_exf/results/output.txt
1442    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1443      (SBO) core products, including oceanic mass, center-of-mass,
1444      angular, and bottom pressure (see pkg/sbo/README.sbo).
1445    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1446      to avoid negative values in shallow regions.
1447      - updated verification/natl_box/results/output.txt
1448      - updated verification/lab_sea/results/output.txt
1449    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1450    o Added useSingleCpuIO option (see PARAMS.h).
1451    o Updated useSingleCpuIO option in mdsio_writefield.F to
1452      work with multi-field files, e.g., for single-file pickup.
1453    o pkg/seaice:
1454      - bug fix in growth.F: QNET for no shortwave case
1455      - added HeffFile for specifying initial sea-ice thickness
1456      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1457    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1458      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1459    o pkg/seaice:
1460      - adjoint-friendly modifications
1461      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1462    
1463    checkpoint48e_post
1464    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1465    o dynamics: change definition of computational domain & adapt mom_fluxform
1466      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1467    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1468        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1469        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1470        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1471        inverted_barometer solid-body.cs-32x32x1
1472      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1473    
1474    checkpoint48d_post
1475    o in preparation for r*:
1476     a) use pre-computed gradient of hydrostatic potential:
1477        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1478     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1479        => affects results of glob_oce_pressure (different truncation error)  
1480      update output.txt of ideal_2D_oce & global_ocean_pressure
1481    
1482    checkpoint48d_pre
1483    o in preparation for r*:
1484      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1485      pass the 2 comp. of the grad. as arguments to momentum S/R.
1486      but for the moment, only used if it does not change the results.
1487    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1488    
1489    checkpoint48c_post
1490    Modifications in treatment of initial flux forcing controls
1491    to avoid extra storing of flux fields.
1492    
1493    checkpoint48c_pre
1494    o Added tidal_basin_2d experiment (currently 1D!)
1495    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1496    
1497  checkpoint48b_post  checkpoint48b_post
1498  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
1499   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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