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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.512 by jmc, Mon Jul 11 20:32:19 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 pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
8          and taking the square quantity and/or using a fraction-weight field.
9    o fix aim_diagnostics_init.F mate numbers.
10    o add mnc output capability to diagnostics/diagstat and update
11      our cvsignore files for the ACSII output generated
12    
13    checkpoint57k_post
14    o lab_sea now uses diagnostics package and provides a suite of
15      new EXF diagnostics output.
16    
17    checkpoint57j_post
18    o exf
19      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
20        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
21        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
22      * extended diagnostics output
23        - now includes all EXF variables
24        - hs, hl moved to common block
25        - separate S/R for diagnostics, called after ctrl vector is added
26        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
27        - EXFqnet contains true Qnet (i.e. includes qsw)
28      * updated verif. lab_sea, global_with_exf
29      * Rearranging hflux (exf_mapfields -> exf_getforcing)
30        to ensure that diagnostics sees a true EXFqnet
31    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
32    o diagnostics pkg: change pointers so that 1 diagnostic can be used
33      several times with different frequencies.
34    o mnc-ify the thsice package as requested by Daniel Enderton
35      - the monitor--MNC output needs work
36      - many attributes need to be added (most are currently blank)
37    o mnc-ify theaim_v23 package as requested by Daniel Enderton
38      - many attributes need to be added (most are currently blank)
39    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
40    o add Sadourny like discretization to the 4th.O vorticity advection scheme
41    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
42      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
43         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
44    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
45     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
46    
47    checkpoint57i_post
48    o Diagnostics package was changed: diagnostic allocation is now deactivated
49      by setting an empty file name in the namelist (used to be by setting 0 frequency)
50    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
51      add 1rst Order upwind vertical Shear.
52    o add a quick fix for A/B checkpointing in OFFLINE mode
53    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
54      end-run around the C/Fortran linking horror in eesup/src/timers.F
55    o added pkg/runclock: allows user to terminate run based on wall clock
56    o added non-hydrostatic scaling parameter: nh_am2
57    o pkg/my82: futile attempt to make results compiler-independent by adding
58      some "_d 0", etc. no effect.
59    o for mnc output, fill the 'T' coordinate var with myTime and create a
60      separate 'iter' variable for iteration count
61    o pkg/diagnostics:
62      add new capability: output of Global/Regional & per-level statistics ;
63      tested against monitor output (including land & thSIce) on various exp.
64    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
65    
66    checkpoint57h_done
67      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
68      data.diagnostics, data.gchem, data.ptracers) is done.
69    
70    o pkg/diagnostics: prepare for Global/Regional statistics.
71      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
72    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
73      and rename it: DIFFERENT_MULTIPLE
74    
75    checkpoint57h_post
76    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
77    o pkg/diagnostics: change output frequency, now in seconds (instead
78      of Nb of iterations). This requires to change data.diagnostics.
79    checkpoint57h_pre
80    
81    o in mnc, let the user create the output dir if both mnc_outdir_date
82      and mnc_outdir_num are false
83    o add fflags() to pkg/diagnostics which allows one to specify, on a
84      per-file basis, the file precision [default behavior is unchanged]
85    o added diagnostics to pkg/kpp, including computation of mixed layer
86      depth based on a temperature/density criterion
87    o updated verification/natl_box to test the new pkg/kpp diagnostics
88    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
89    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
90    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
91      not mnc -- this mistake was found by JMC and is now corrected
92    
93    checkpoint57g_post
94    o add Adams-Bashforth 3rd Order time stepping:
95      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
96      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
97    checkpoint57g_pre
98    
99    o make lambda[Theta,Salt]ClimRelax spatially varying
100      (default remains spatially uniform constant based on tau)
101    o added new control variables
102      * init. uVel, vVel, etanN
103      * lambda[Theta,Salt]ClimRelax
104    o separate masks used for ctrl_pack/unpack 'from write_grid' output
105      (suggested by G. Forget)
106    
107    checkpoint57f_post
108    o add parameter "baseTime" = model base time = time at iteration zero
109      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
110      account for baseTime shift
111    o move Coriolis arrays from PARAMS.h to GRID.h
112    checkpoint57f_pre
113    
114    o mnc-ifying the seaice package
115    o introduced an alternative length scale calculation for use in the limiting
116      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
117    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
118    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
119      as well as grad(vort3).  Made it compatible with both approximate form
120      for the cubed sphere and full form of these gradients.  Added flag
121      useFullLeith to select between approximate and full form.  
122    o add "d0" in getcon.F to reduce differences between compilers/platforms
123      update output.txt of exp. fizhi-gridalt-hs
124    o change port_rand funtion to allow to set the seed.
125    o fix obscure MNC bug involving conversion between reals and integers
126      - it caused no problems with certain (eg. gcc, ifc) compilers but the
127        new version is now more standards-compliant
128    o adjoint-related modifications
129      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
130      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
131      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
132    
133    checkpoint57e_post
134    o Adding eddy stress controls a la Ferreira et al.
135    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
136    
137    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
138      update output.txt of exp. fizhi-gridalt-hs
139    o add more "Z" dimensions and associated coordinate vars to MNC
140    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
141    o parameter calendarDumps: when set, approximate months (30-31 days) and years
142      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
143      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
144      months and years.  Requires pkg/cal.
145    o diagnostics: add pickup functionality
146      - off by default for backwards compatibility
147      - current version only uses MDSIO -- MNC will be added
148    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
149    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
150    
151    checkpoint57d_post
152    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
153    o modify verification/ideal_2D_oce so that it tests the creation of mnc
154      output from the diagnostics package
155    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
156    o make genmake2 more portable by using ".$FS" instead of ".f" for more
157      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
158    o add coordinate variables to the MNC output from the diagnostics package
159    o change MNC-flags default value: true when useMNC=TRUE
160    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
161      the ability (off by default) to read the grid information using MNC
162    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
163    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
164    o do snap-shot diagnostics at the middle of the time-interval (instead of
165      at the end).
166    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
167      new test for AIM with thSIce + slab-ocean
168    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
169    o move state variable diagnostics to the beginning of the time step ;
170      (note: still needs some work specially for snap-shot diagnostics)
171      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
172    
173    checkpoint57c_post
174    o Change testing option (-ieee) to get closer agreement between g77 & ifort
175    o generate new output.txt files on faulks with g77 & the new -ieee option
176    checkpoint57c_pre
177    
178    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
179      update output.txt of exp. global_ocean.90x40x15
180    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
181      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
182    o add saltFlux(+File) forcing capability with periodicExternalForcing
183    o allow to use pkg diagnostics for GM-Redi & ThSIce output
184    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
185    o improvements for the MNC output from DIAGNOSTICS:
186      - correct handling of the unlimitied dimension
187      - all dims now have associated coordinate variables
188      - variables located at U, V, and Corner ("Z") points are now written
189        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
190        *all* data points are output
191    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
192    o added pkg/seaice/seaice_monitor.F
193    o mdsio_readfield.F can now read files visible only to master MPI process.
194    o pkg/seaice: some test code for ice-modified ocean stress
195    o exf_getffields interpolation defaults to bilinear for all scalar forcing
196      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
197      spurious negative numbers for precipitation and humidity.  Will cause
198      some small numerical differences for integrations using pkg/exf/exf_interp.F.
199    o pkg/ctrl/
200      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
201        May be enabled via doPackDiag
202      *  introduce z-scaling of
203         + gradient (doZscalePack) and
204         + control (doZscaleUnpack)
205    o pkg/mdsio/
206      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
207      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
208    
209    checkpoint57b_post
210    o simplify options in diagnostics_fill arguments (remove weird combinations)
211    o fix MNC coordinate variables so that they now contain per-face index
212      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
213      general, EXCH2 grids are only aligned to a "local" coordinate system
214    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
215    o Implement instantaneous output within pkg diagnostics:
216      setting a negative frequency in data.diagnostics produces
217     "snap-shot" output (as opposed to time-average if freq > 0)
218    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
219      NOTE: change ptracer diagnostics name: use 2 characters to work with
220            more than 9 tracers. Add also diagnostics of advect & diffus flux.
221    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
222      becomes the coordinate variable for the 'T' dimension
223    o add CF-style coordinate variables to MNC
224      - just a first cut:  numbers are meaningless on the cubesphere and
225        missing along the T axis but otherwise it works!
226    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
227    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
228    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
229      this is based directly on what the model compute, so that the content of
230      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
231    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
232    o clean up build options files for SunOS, in particular
233      - remove -traditional from xmakedepend
234      - change -xarch=v9 to -xarch=native for f77
235      - restore use of make (not gmake)
236      - add CC=gcc if using g77
237    o changes per discussion of AM, JMC, & EH3 today:
238      - move redundant "grid" variables out of "state" -- in preparation of
239        creating proper CF-style coordinate variables and in recognition
240        that any/all grid variables can be easily copied (eg. w/NCO) from
241        the grid files into any of the other NetCDF files
242      - *always* output grid variables with MDSIO (this will eventually be
243        changed)
244      - output MNC grid file if useMNC is true
245    o every instance of _END_MASTER() has been found and replaced with
246      _END_MASTER( myThid ) in order to satisfy certain picky Sun
247      preprocessors
248    o re-arrange diagnostics pkg initialisation:
249     - allow each package to extend the available diagnostics list
250     - add some checking and fix small problems (multi-threaded, ...)
251     - new S/R diagnostics_fill (replace fill_diagnostics):
252       look through the short list of active diag. (instead of the long list)
253       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
254    
255    checkpoint57a_post
256    o this set of changes restores TAMC compatibility
257      tested for global_ocean.90x40x15 adjoint on trough
258      (what a pain)
259    
260    checkpoint57a_pre
261    o some modifs in tools/build_options for sunos
262    o call ctrl_pack for ctrl at end for optimcycle=0
263    
264    checkpoint57
265    o add horizontal bi-harmonic viscosity for vertical velocity
266      - new parameter viscA4W (defaults to viscA4)
267      - affects only non-hydrostatic code
268      - to be done: no-slip lateral boundary conditions
269    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
270    o implement Implicit Vertical advection for pTracers
271    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
272      (implemented also for implicit vertical diffusion & advection)
273    o OBCS: extend application of tracer open boundary conditions
274      to a strip beyond the boundary of width Olx/Oly
275    o add call monitor to TAF set of required calls (flow directives)
276      and include in natl_box_adjoint
277    o untangle a few ifdefs related to cost, ctrl, autodiff
278      untangel a few ALLOW_ECCO_OPTIMIZATION
279    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
280      (theta2, salt2 in ecco_cost_weights)
281    
282    checkpoint56c_post
283    o OBCS as control variables
284      - update ctrl_ad_diff.list, obcs_ad_diff.list
285      - remove balance of obcs controls from default
286      - fix index bug nobcs in ctrl_init
287      - fix dummy fields filen in ctrl_pack
288      - add dummy weights for obcs
289    o lsopt: comment out fort.94 output
290    o optim:
291      - remove unnecessary header files
292      - adjusted namelists
293      - add xerbla.F to Makefile
294    o exf:
295      - multiple modifications of exf_check_range
296      - unit change in exf_init_runoff from [m/year] to [m/s]
297    o mdsio:
298      - i/o-vector change debugLevel from debLevA to debLevB
299    
300    checkpoint56b_post
301    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
302      is called from DO_THE_MODEL_IO
303      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
304      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
305      - clean up PTRACERS_WRITE_TIMEAVE a little
306    o add another verification experiment that tests both the cfc-pkg and
307      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
308      reactive tendencies treated inline with regular timestepping
309    o testreport previously did a lousy job of comparing small numbers, so
310      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
311      implemented in the little c-progam tmp_cmpnum.c which is embedded in
312      testreport.
313    o ptracers_monitor: bug fix for MPI
314    
315    checkpoint56a_post
316    o GCHEM: finish reorganizating the package
317      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
318        (introduces another 3D-array for each passive tracer, but only if
319        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
320        gchemTendency is not needed because the timestep is done separately)
321      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
322      - GCHEM is now---more or less cleanly---separate from PTRACERS
323      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
324        so clear to me how that should be done in a general way.
325    o CFC: improve formatting of output in CFC_ATMOS
326    o PTRACERS:
327      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
328        that ALL experiments with ptracers enable can be checked. This makes
329        GCHEM_MONITOR obsolete.
330      - include a runtime parameter PTRACERS_monitorFreq that defaults to
331        monitorFreq
332      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
333    o add PTRACERS (PTR0[1-5]) to testreport output
334    o exf_check_range:
335      * default changed to .TRUE.
336      * will check values for niter0 if debLevA, every timestep if debLevB
337      * STOP in exf_check_range if 'out of range'
338      * range chosen generous to allow for potential extema
339      TBD: a version with stricter range
340           permitted range would be runtime parameters
341    o GMredi:
342      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
343      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
344      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
345    o GCHEM:
346      - move call to GCHEM_FORCING_SEP, so that it is now called before
347        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
348      - introduced a useGCHEM runtime flag and applied it everywhere.
349      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
350        this flag is now only visible within GCHEM-pkg routines.
351      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
352        be replaced by a 3D array that is computed before thermodynamics; for
353        this, the tracer ID iTracer had to be included into the parameter list
354        of ptracers_forcing
355      - set up forward_step to call gchem_forcing, that will replace
356        gchem_forcing_int in ptracers_forcing
357      - cleaning up
358    o small cleaning of exch2: remove files that are also in eesupp/src
359    
360    checkpoint56
361    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
362    o mnc: cleanup "full" files--fixes out-of-memory problem
363    o ECCO-GODAE
364      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
365      * fully merged and updated from SIO code
366        windstress sign change affects
367        - exf_inscal_[u/v]stress
368        - sign of xx_tau[u/v] adjustments
369        - signs in cost_scat
370      * ctrl_get_gen: avoid update of tau[u/v] for first few days
371      * natl_box_adjoint updated and compressed
372      * 2-level checkpoint switch added
373        (tested in EXP. 1 of natl_box_adjoint)
374      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
375    o SVD
376      * first complete, non-hacked version for SVD calculations
377      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
378        performed via direct access files admtlm_vector.it????
379        (via ctrl_[un]pack)
380      * optimcycle is used for ARPACK iteration counter
381        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
382      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
383        and add linear transforms where necessary
384      * controls are initial/final SST, SSS (can be extended; need to check
385        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
386    o mdsio: filename info to both stderr, stdout
387    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
388      from sign change
389    
390    checkpoint55j_post
391    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
392      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
393    o add consistent build directories and .cvsignore files to verification
394    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
395    o make all subroutines 30 or less characters in length for certain older
396      compilers to work (a thorough search only turns up two routines in
397      pkg/ptracers)
398    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
399      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
400    
401    checkpoint55i_post
402    o change arrays for total vertical diffusivity (2.D if explicit,
403      3.D if implicit) ; each ptracer uses its own background value.
404    o added mnc/NetCDF output capability to ocn_compon_interf
405      - added bits to verification/cpl_aim+ocn so that it can run on
406        ITRDA and other clusters without the mpirun "-wd" option
407    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
408      configuration
409    o give MNC the ability to create additional files rather than
410      exceeding a specified file size limit "MNC_MAX_FILESIZE"
411      - the default is just less than 2GB which is a practical limit
412        on many systems
413    o Compute the non-local term using either KPP vertical diffusivity (=default)
414       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
415    
416    checkpoint55h_post
417    o add verification test "vermix"
418    o remove all the *_ioinc flags and replace with the single global
419      outputTypesInclusive flag
420    o allow to set a vertical profile of vertical diffusivity for T & S
421    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
422    o useMNC moved from data.mnc to data.pkg
423    
424    checkpoint55g_post
425    o Renaming carbon AD experiments to comply with testreport conventions
426    o Updating adjoint of Held-Suarez hs94.1x64x5
427    o Fixing directives for non-ECCO forward_step, after ECCO directives
428      have been fixed to avoid recomp. of do_oceanic_phys
429      Works well for global_ocean.90x40x15,
430      but recomp. issue remains for carbon
431    o Updating adjoint output for natl_box_adjoint after
432      pkg/ecco has been modified (see taga c55d_post)
433    
434    checkpoint55f_post
435    o rename to timeave_init_fixed
436    
437    checkpoint55e_post
438    o some delicate re-shuffle of store directives to avoid one
439      extra call of do_oceanic_physics
440      affects ecco_the_main_loop.F, do_oceanic_physics.F
441      checkpoint_lev1_directives.h
442    o NB: this may break global_ocean adjoint temporarily,
443      but it is clear how to fix it. Will do later, need this now.
444    
445    checkpoint55d_post
446    o ECCO specific cost function terms (up-to-date with 1x1 runs)
447    o ecco_cost_weights is modified to 1x1 runs
448    o modifs to allow observations to be read in as
449      single file or yearly files
450    o enable to read exf forcing fields as either
451      single file or yearly files (flag useExfYearlyFields)
452    checkpoint55d_pre
453    
454    o switch between 2-level and 3-level checkpointing
455    o add ability of MNC to write local and "partial" (eg. 2D slices where
456      the full 3D field is never actually stored) arrays to NetCDF files
457      with the correct (that is, the complete multi-dimensional) set of
458      array indicies
459      - used in mom_vecinv() to write the diagFreq output
460      - tested (demonstrated) in verification/aim.5l_cs
461    o further mnc-ification
462      - add verification/lab_sea to the list with mnc setups
463      - fix undefined mnc v-names in cd_code
464      - add kpp to mnc output (both snapshot and timeave)
465    o non-hydrostatic code
466      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
467        in calc_gw.F
468      - defaults to viscAh
469      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
470        friction or Leith) in non-hydrostatic mode, as long as there is
471        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
472    o pkg/cost
473      extend simple cost functions to treat time mean quantities
474      (T,U,V) via cost_accumulate_state from cost_tile
475    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
476        be 2 times larger than the minimum size the advection scheme requires.
477        now get a perfect conservation of salt in advect_cs test-exp (updated)
478    o GGL90 (Gaspar's TKE mixed layer)
479      - add horizontal diffusion of TKE, requires exchanges in
480        do_fields_blocking_exchanges, horizontal diffusivity is zero by
481        default. In OPA there is no horizontal diffusion of TKE but the
482        mixing coefficients are computed from a horizontal average of TKE of
483        6 points or so. I think that diffusion has a little more physical
484        justification.
485      - clean up ggl90_calc in the hope of reducing memory usage (this hope
486        was in vain)
487      - mask tke-variable in ggl90_init
488    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
489    o fix biharmonic diffusion on CS-grid.
490    o more obcs stuff
491      - added obcs_external_fields_load as an alternative to the EXF-pkg option
492        for reading boundary values. This routine is called from
493        obcs_prescribe_read
494      - updated obcs_check
495      - changed sponge layer relaxation parameter units for days to seconds
496      - turned off sponge layer by default
497      - changed argument list of OBCS_CALC to myTime+deltaTclock
498      - fixed about 35 bugs in obcs_external_fields_load
499    
500    checkpoint55c_post
501    o obcs stuff
502      - new runtime flags useOBCSprescribe, useOBCSbalance
503      - re-arranged obcs_calc
504      - moved exf_getobcs to obcs_prescibe_read
505        obcs_prescibe_read is called after ORLANSKI stuff
506        and independent of it (executable can contain all).
507      - updated obcs_check
508      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
509        These may be necessary only if tangential velocities are
510        prescribed at OB, not sure, needs testing.
511    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
512      which simplifies the calls and passes the ifc check-bounds test
513    
514    checkpoint55b_post
515    o add a 2D scalar, Z location, exchange_2 routine.
516    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
517      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
518      affects advect_cs results (for the wrong reason): update output.txt
519    o use a more standard discretization for biharmonic viscosity ;
520     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
521      affects results of dome set-up: update output.txt
522    o fix gad_advection.F (CubedSphere part), back to version 1.23
523    o fix bug in mom_vi_del2uv.F (CubedSphere part).
524    
525    checkpoint55a_post
526    o merged code to
527      * prescribe/read time-dependent open boundaries
528        (works in conjunction with exf, cal)
529      * sponge layer code for open boundaries
530      * each boundary N/S/E/W now has its own CPP option
531        (healthy for the adjoint)
532    
533    checkpoint55
534    o up-to-date adjoint of previous breaks
535      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
536      - global_ocean_ebm: adjoint still needs fix (TLM ok)
537      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
538      - carbon: * remove tr1-related adjoint verification
539                * add ptracer as control variable
540    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
541      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
542    
543    checkpoint54f_post
544    o in verification/carbin/ remove experiment related to
545      ALLOW_PASSIVE_TRACER (array tr1 etc)
546      code_ad/ input_ad/ results_ad
547    
548    o add two new packages
549      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
550        + subject to optimization (memory)
551      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
552        + subject to reordering (many GOTOs in the original code)
553        + so far opps is called for every (i,j) point, and then operates in
554          the vertical; one may want to reorder the scheme in order operate in
555          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
556          fields)
557    o overhaul of IO so that we now have flags for MDSIO and/or MNC
558      - all verification tests compile and run with linux_ia32_g77
559      - defaults are compatible with current input files--nothing
560        should change if you were not previously using MNC
561      - MNC output has been added in numerous places (eg. timeave)
562        but there are still a few writes not yet do-able with MNC
563        (this is in progress)
564      - flags now allow for either/or/both use of MDSIO and MNC and
565        documentation will soon follow
566      - numerous small formatting cleanups for ProTeX
567    o add version info (via BUILD_INFO.h) to MNC and stdout
568    
569    checkpoint54e_post
570    o add two new packages
571      - pp81 (Packanowski and Philander, 1981), Richardson number and
572        stratification dependent mixing
573      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
574      - these scheme operate in a similar manner as KPP (without ghat, of
575        course), however there is only one diffusivity that is used for both
576        temperature and salinity (and passive tracers)ç
577    o add offline package
578    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
579      provided by Stephanie Dutkiewicz
580    o genmake2: add ability to search for C compilers and cleanup test output
581      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
582    
583    checkpoint54d_post
584    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
585    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
586      leading to additional shift by 5 days each year of integration
587       (i.e. leading to considerable offset over the years)
588    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
589    o start with no AB and no initial filtering (staggerTimeStep):
590      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
591    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
592      (external loading & cpl import/export stay in forward_step.F)
593    o update coupling interface to work with new staggerTimeStep
594    o change MDSIO ptracers_pickup.
595    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
596    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
597    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
598    
599    checkpoint54c_post
600    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
601      this affects (truncation error) output.txt of test-exp:
602       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
603    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
604    o change Qnet to always be the net heat flux, (+upward).
605      affects (truncation error) output of natl_box exp.: updated
606    o define the max number of passive tracers in PTRACERS_SIZE.h
607    o start to test mnc routinely in exp0
608    o add sea-ice loading (sIceLoad) as a new forcing field.
609    
610    checkpoint54b_post
611    o add testreport "-j JOBS" option for parallel builds (tested and pretty
612       impressive on Altix and Opteron systems)
613    o diagnostics can now write NetCDF files through the mnc package
614    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
615    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
616    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
617      affects (truncation error) output of lab_sea & natl_box exp.: updated
618    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
619    
620    checkpoint54a_post
621    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
622    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
623    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
624    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
625      + internal_wave (shift in writing cg2d_ini_res)
626    checkpoint54a_pre
627    
628    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
629      - modified verification/lab_sea and natl_box_adjoint accordingly
630    
631    checkpoint54
632    checkpoint53g_post
633    o prepare splitting of thermodynamics: store convect.counter in common block
634    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
635      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
636    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
637    o new parameter "nShapS": allow to treat differently S from T (nShapT)
638    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
639    o restore adjointability
640    
641    checkpoint53f_post
642    o modifications that affect AIM experiment results (update output.txt):
643      - no advection of S at top interface Nr (pkg/generic_advdiff)
644      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
645    o AIM pkg:
646      - include stability function into surf.Flux derivative relative to Tsurf
647      - calculate clear-sky radiation & surface temp. change (for diagnostics)
648    
649    checkpoint53e_post
650    o merged cylindrical coord configuration
651    o added rotating_tank experiment
652    checkpoint53e_pre
653    
654    checkpoint53d_post
655    o faulks upgraded: re-generate output.txt that have changed:
656       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
657    o Added Bryan and Lewis, 1979, vertical diffusivity profile
658    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
659    o added Sadourny discretization of Coriolis
660      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
661      - re-enabled use of omega3 (useAbsVorticity)
662    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
663      vector-invariant equations
664      - note: does *NOT* yet use same variable visc. for no-slip BC's.
665    o recoded the lateral boundary conditions for non-hydrostatic w, this time
666      hopefully without new bugs
667      - still to do: biharmonic friction for non-hydrostatic w
668    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
669    o regenerated output for global_ocean_ebm (using -ieee)
670    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
671      of mom_common/
672      - simple re-arrangement of instructions within computing loop
673    checkpoint53d_pre
674    
675    checkpoint53c_post
676    o new version of coupler for AIM+thSIce and Ocean models
677     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
678     - land: change Evaporation of snow
679     - aim with thSIce: fix bug in snow-precip.
680    o changes to calc_gw.F
681     - bug fix for w^2 term near the bottom boundary
682     - (hopefully) improve the lateral slip boundary condtions for use with
683        partial/looped cells
684      - because the bug fix changes two verification experiments anyway (exp5
685        and plume on slope), change the lateral boundary condition from half slip
686        to the value of no_slip_sides
687    o ebm package wasnt quite up to the parallel task. Fixed that.
688    o Adjoint of EBM package + verification
689      * TLM OK
690      * ADM not sufficient accuracy yet (needs further testing)
691    
692    checkpoint53b_post
693    o Commiting new energy balance model to repository
694      * package is pkg/ebm
695      * verif. is verification/global_ocean_ebm
696      * references are in ebm_driver.F
697    C      * X. Wang, P. Stone and J. Marotzke, 1999:
698    C        Global thermohaline circulation. Part I:
699    C        Sensitivity to atmospheric moisture transport.
700    C        J. Climate 12(1), 71-82
701    C      * X. Wang, P. Stone and J. Marotzke, 1999:
702    C        Global thermohaline circulation. Part II:
703    C        Sensitivity with interactive transport.
704    C        J. Climate 12(1), 83-91
705    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
706    C        Destabilization of the thermohaline circulation
707    C        by atmospheric eddy transports.
708    C        J. Climate 7(12), 1870-1882
709    o Will need long integration testing.
710    checkpoint53b_pre
711    
712    o created pkg/mom_common in preparation for variable viscosity code
713    o renamed and split ini_mnc_io
714    o pkg/land: only liquid water can diffuse or run-off
715    o AIM using land: soil wetness availability account for snow
716    o added printMapIncludesZeros to EEPARMS namelist
717    
718    checkpoint53a_post
719    o restore TAMC compatiility for exf_constants.h
720      (no usage of _d in .h)
721    o Additional storing in KPP in an attempt to fix
722      TAMC problem with adjoint of KPP code.
723      (no success...)
724      Identical code works fine with TAF.
725    o Fixed verification/natl_box_adjoint experiments.
726      Initial conditions for Experiments 4 and 5 are now
727      set to "SEAICE_initialHEFF=0", which is more reasonable,
728      and hence gives results closer to that of Experiment 2.
729      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
730    
731    checkpoint53
732    o stable checkpoint with up to date adjoint
733      TLM tests only run for 1st grdchk at the moment. Its unclear if
734      this is a code problem or a problem with resetting code for g_
735      variables that is being autogenerated wrong.
736      Otherwise:
737       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
738       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
739         are both still in chaos following their security messes.
740    
741    checkpoint52n_post
742    o various build (mostly genmake2) changes including:
743      - ability to build/run more easily within Cygwin and MacOS X
744      - more complicated Makefiles with a stronger dependence on Gnu Make
745    o pkg/seaice modifications
746      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
747        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
748        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
749      - changed proxy for geostrophic velocity and updated
750        verification/lab_sea/results/* accordingly
751      - removed ADI dynamic solver from pkg/seaice
752      - replaced all occurrences of 1/CSTICE or 1/CSUICE
753        they caused a segmentation fault under certain circumstances
754      - removed unused field WATR
755    o bug fix in exf-package:
756      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
757         now reflect that.
758    o small fixes in the cal-package:
759      - set reference date to first of January for the 'model'-calendar
760      - failing of cal_CheckDate in cal_FullDate now actually results in a
761        warning
762    o small modifications in exf-package to increase flexibility:
763      - change climtempfreeze from a constant to a runtime parameter that
764        is specified in data.exf_clim (default = -1.9)
765      - introduce runtime parameter windstressmax (default = 2.0) that is
766        specified in data.exf
767    o fix in pkg/thsice:
768      - update Evap (Tsf changes) to be consistent with Latent heat flux
769      - maintain snow precipitation unchanged (even if Tsf >=0).
770     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
771    
772    checkpoint52m_post
773    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
774      this does not change any of the results, because myIter=0 in swfrac always
775      lead to jwtype=2 (the default anyway), but the call makes little sense
776      as a default
777    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
778    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
779      atmospheric model (AIM) to use it ; add a "slab ocean" component.
780    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
781    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
782    o extending useSingleCpuIO option to work with new exch2 I/O format
783      - old-style, missing-tile I/O is still accessible by defining CPP
784        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
785    o monitor package can write to NetCDF files and/or STDOUT
786    o fix re-definition bug in MNC_GRID_INIT_ALL()
787    o doc/api_reference added
788      - a framework for building an API Reference Manual using all
789        the "protex" comments embedded in the code
790      - see pkg/generic_advdiff, pkg/mnc for examples
791    o MNC:
792      - make myThid the last argument for all subroutines
793      - new default for the grid files: NO halos
794      - add useMNC and other run-time flags
795      - separate per-file-group handling of the unlimited dimension
796      - early initialization of MNC w/ flags read at the eeboot stage
797        and lookup tables set in initialize_fixed
798      - write all MNC output to a freshly-created directory
799    o thermodynamics sea-ice (thsice) is now tested with testreport.
800    o test exp. advect_cs: use the standard cs32 grid ; update output.
801    o Added functionality to grdchk:
802      pick global i,j,k position (or nearest wet) where to perform check.
803    
804    checkpoint52l_post
805    o new land formulation:
806      a) use ground enthalpy as prognostic variable to ensure exact
807         energy conservation.
808      b) account for water temperature and for latent heat of freezing
809         in all processes (rain, run-off, ground storage)
810      c) compute surface and ground temperature implicitly.
811    o aim_v23 modification for new land model:
812      a) Treat separately land / ocean / sea-ice surface fluxes
813         to allow implicit computation of land & sea-ice surface temp.
814      b) add snow precipitation.
815    checkpoint52l_pre
816    
817    o fix problem (when 1 tile is empty) in min/max monitor.
818    o fix bug in timeAve (u,vZetatave in common block)
819    o no restoring terms under ice for pkg/seaice
820    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
821    o bug fix for pkg/seaice pickups
822    o change MNC call locations and add coordinate attributes
823    o mask vorticity at the corner ; affects global_ocean.cs output
824    o fix ini_curvilinear_grid ; test CS experiments with mpi
825    o aim.5l_cs: modify sea-ice fraction input file ; update output
826    o exf: Adding simple range check routine for exf fields after read
827    
828    checkpoint52k_post
829    o removed top-level directory "diags"
830      - we migrated these functions to pkg/timeave a long time ago
831    o fixed bug introduced in pkg/monitor
832    o accuracy ctrlprec = 32 insuffient for gradient checks using
833      averaged fields (I/O via cost_averages)
834      -> use ctrl.h in active_file*.F to control I/O precision.
835    o paramter list of CALL ADTHE_MAIN_LOOP
836    o added initial do_the_model_io to ecco
837    o set all ...Freq to zero after cost_final
838      taveFreq, dumpFreq, pChkptFreq
839    o MAIN and ECCO differentiability restored
840    
841    checkpoint52j_post
842    o fix nchklev in tamc.h for global_ocean...
843    o Bringing flow and store directives up-to-date
844    o Really weird thing!
845      call do_the_model_io from the_main_loop with parameters
846      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
847      TAF places a faulty re-call of initialise_varia
848      after cost_final call which should not be there!
849    checkpoint52j_pre
850    
851    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
852      error messages
853    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
854    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
855      debug output
856    o modfied mdsio_writefield.F to handle non-global files under exch2
857    o update AIM Cubed-Sphere exp (aim.5l_cs):
858      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
859    o update AIM Equatorial Channel exp:
860      use standard aim_v23 pkg and change the SST fields to be more realistic.
861    o globalFile now works with exch2
862    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
863      mon_vort3.F to make exch2 friendly with >1 tile per cube face
864    o limit timeave output for hi-res integrations
865    
866    checkpoint52i_post
867    o removed CPP_EEOPTIONS.h from verification/*/code
868    o updated the tiling for global_ocean_pressure
869    checkpoint52i_pre
870    
871    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
872      the old pkg/aim).
873    
874    checkpoint52h_pre
875    o shortened offending lines in exch2_send_rx?.template
876    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
877    o genmake2: add build & execute test for NetCDF code
878    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
879      old grid files, moved CPP_EEMACROS.h to pkg/exch2
880    o added useSingleCPUIO flag to monitor.F and mon_out.F
881    o added temporary hack for sea-ice dynamics on the cube:
882      metric terms are ignored and it is assumed that
883      there is no sea-ice on cube faces 1, 2, 4, and 5.
884    
885    checkpoint52f_post
886    o added exch2 cube routines to pkg/exch2
887    o modified hs94.cs-32x32x5 to use it
888    o added new grid files to hs94.cs-32x32x5
889    checkpoint52f_pre
890    
891    checkpoint52e_post
892    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
893      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
894    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
895      to work with implicit vertical advection and AB ;
896    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
897    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
898     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
899    checkpoint52e_pre
900    
901    o fix bug in impldiff when Nr=1 or Nr=2.
902    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
903    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
904    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
905      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
906    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
907    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
908    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
909    
910    checkpoint52d_post
911    o re-tiled many expts to allow comparison in multi-processor mode
912      - updated output accordingly
913      - changed hs94.128x64x5 to use intial T from file rather than use the
914        random number generator
915    o add infrastructure in model routines for fizhi and gridalt packages
916    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
917    o changes to permit hi-res, cubed-sphere, configuration
918      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
919      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
920      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
921        of surface winds for the cube
922      (A verification experiment, based on global_ocean.cs32x15, but with
923       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
924       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
925       complete with example surface forcing files and matlab scripts to look
926       at the output and compare it with that of global_ocean.cs32x15.)
927    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
928       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
929       to conform to the common rule.
930    o check-in the first version of the coupler + interfaces for multi-components
931       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
932       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
933       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
934       - ocean and atmos. share the same horizontal grid (no interpolation).
935       - exchanges between component and coupler is done in forward_step
936    o new verification experiment, cpl_aim+ocn:
937       coupled ocean - AIM atmosphere on cs32 grid.
938    
939    checkpoint52d_pre
940    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
941    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
942    
943    checkpoint52c_post
944    o Fixing OPTIONS files for use of exf:
945      - ALLOW_ECCO not needed
946      - ECCO_CPPOPTIONS.h should not be included from
947        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
948        as has been the case in the past
949      - All cal/exf related options are currently set in
950        single header file. Should remain so until we
951        agree on a consistent new policy.
952    o Removed all CPP options for cal package.
953      cal has no more CPP options.
954    o modified STOREs in GAD_ADVECTION
955    o corrected key comp. for passkey
956    
957    checkpoint52b_post
958    o new version: "thsice" of thermodynamic sea-ice pkg:
959     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
960     - modify fluxes but do not change theta directly;
961     - light cleaning of bulk_force pkg (still needed with thsice).
962     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
963       + output_thsice.txt to test thsice & bulk_force pkgs.
964    o put back grid & coriolis monitor output.
965    checkpoint52b_pre
966    
967    o call "do_the_model_io" at the beginning (=> dump initial state)
968    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
969    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
970      (need info on NUMBER_OF_PTRACERS)
971    o missing PTRACERS headers in some routines
972    o default tamc.h in pkg/autodiff supposed to crash
973      to ensure proper customization
974    
975    checkpoint52a_post
976    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
977      - moved surfaceTendencyTice from pkg/seaice to main code
978      - subroutine FREEZE_SURFACE now limits only surface temperature
979        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
980        => new output.txt for global_ocean.cs32x15 & global_with_exf
981      - keep the old version of FREEZE for backward compatibility;
982        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
983      - corresponding modifs for TAF directives
984    o added surface flux output variables to TIMEAVE_STATVARS
985    o time-averaged output for pkg/ptracers
986    o fix problem with ECCO-related divided adjoint
987      snapshot file was missing some ad-variables,
988      but no warning issued by TAF
989    
990    checkpoint52a_pre
991    o some bug fixes for #undef REAL4_IS_SLOW
992    
993    checkpoint52 = ecco_c52_e35
994    o after testing adjoints of checkpoint51u_post
995    
996    checkpoint51u_post
997    o this is the post-merge tag of the ecco-branch
998      (needs another clean checkout and re-testing)
999    o various natl_box_adjoint configs and results
1000      but no input fields
1001    o obcs adjoint not yet merged!
1002    o adding ECCO global 1x1 and 2x2 degree configs
1003    o updated/extended some store directives for seaice
1004    o pkg/ecco now containes ecco-specific part of cost function
1005    o top level routines the_main_loop, forward_step
1006      supersede those in model/src/
1007      previous input data.cost now in data.ecco
1008      (new namelist ecco_cost_nml)
1009    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1010    
1011    checkpoint51t_post
1012    o this is the pre-merge tag of the ecco-branch
1013    
1014    checkpoint51s_post
1015    o cleanup: removed various obsolete #define-s
1016    o pkg/grdchk
1017      - renamed 'ph-grd 3' to 'grad-res'
1018      - merged from ecco-branch
1019        (remaining bug fixes for obcs gradient checks)
1020      - additional high-precision output for testreport
1021        (grep for 'precision_grdchk_result')
1022    
1023    checkpoint51r_post
1024    o cleaned up or removed CPP_OPTIONS.h files
1025    o updated results for some of the tests to reflect the new
1026      optfiles (-ieee: -O0 instead of -O3)
1027    
1028    checkpoint51q_post
1029    o cd_code:
1030      - moved cd_scheme.F -> cd_code_scheme.F
1031      - separate read_checkpoint from cd_code_ini_vars.F
1032      - separated cd_code part from write_checkpoint
1033      - updated AD_SOURCE, generated .flow
1034      - added CD_CODE_VARS.h to the_main_loop
1035      - Moving cd_code specific store dir.s to pkg/cd_code
1036    o ctrl package totally restructured
1037      - pack/unpack now optional and decoupled from
1038        xx_/adxx_ I/O
1039      - ctrl_pack/unpack cleaned
1040        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1041      - confined inclusion of AD_CONFIG.h to where necessary.
1042    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1043    
1044    checkpoint51p_post
1045    o create initial cd_code package
1046      - WARNING: the initialization of fields within packages
1047        is broken because INI_FIELDS (where READ_CHECKPOINT is
1048        called) is called *before* PACKAGES_INIT_VARIABLES.
1049        This seems to be backwards since
1050        1) its important to initially zero the entire field including
1051           the "halo" region
1052        2) zeroing needs to be done *before* reading pickup info
1053           and the pickup call might or might not happen in any
1054           particular run
1055      - this needs an overhaul for R2
1056    o cleanup verification/*/code/GMREDI_OPTIONS.h
1057    o cleanup testreport
1058    
1059    checkpoint51o_post
1060    o bringing AD-related verif's up to date with genmake2
1061      - carbon/
1062      - global_ocean.90x40x15/
1063      - hs.94.1x64x5/
1064      - (front_relax/ )
1065    o (more) consistent directory structure for AD-related verif.'s
1066    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1067    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1068    o bug fix in find_alpha.F for MDJWF:
1069      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1070        change rho -> rho-rhoConst
1071      - replace call find_rho to find_rhonum
1072    o initialisation of rFlx extended to full array (required by TAF)
1073      and shifted to thermodynamics
1074    o removed PTRACERS.h in ptracers routine
1075    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1076    o Correcting initialisations for fVerU, fVerV.
1077    o helping TAF to recognize dependency on kUp for
1078      fVerU, fVerV
1079    o Replacing delZ by delR in pkg/ctrl/
1080    checkpoint51o_pre
1081    
1082    o undid all of cp51 pending some cleanups and discussion
1083    o added the [#include "AD_CONFIG.h"] statement to all files that need
1084       it for adjoint/tl #defines
1085     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1086     o removed tools/genmake since it no longer works
1087    
1088    checkpoint51n_post
1089    o modifications to make FREEZE flux visible to pkg/kpp
1090      - moved surfaceTendencyTice from pkg/seaice to main code
1091      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1092      - subroutine FREEZE now limits only surface temperature
1093        (this means new output.txt for global_ocean.90x40x15,
1094         global_ocean.cs32x15, and global_with_exf)
1095    o added surface flux output variables to TIMEAVE_STATVARS
1096    
1097    checkpoint51n_pre
1098    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1099    o added [#include "AD_CONFIG.h"] to all files that use the following
1100      defines:
1101      - ALLOW_ADJOINT_RUN
1102      - ALLOW_TANGENTLINEAR_RUN
1103      - ALLOW_ECCO_OPTIMIZATION
1104    
1105    checkpoint51m_post
1106    o incorporating changes to get TAMC/TAF working in genmake2
1107      - added new TAMC/TAF targets to the Makefile
1108      - various cleanups related to package handling
1109      - these changes should have no impact on the forward model
1110    
1111    checkpoint51l_post
1112    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1113     - faster algorithm for cal_addtime.F
1114     - higher precision arithmetic, where needed
1115     - pkg/exf *startdate variables changed from calendar date to
1116       model integration time
1117    
1118    checkpoint51l_pre
1119    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1120    o enable to apply restoring on S & T only in a latitude band.
1121    o update output (external_forcing_surf modif. change truncation errors)
1122       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1123    
1124    checkpoint51k_post
1125    o change default to: useNHMTerms=.FALSE.
1126     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1127       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1128     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1129        exp1, ideal_2D_oce
1130     - change data file of oceanic exp (leave the results unchanged for now)
1131       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1132    o set gravitySign automatically according to the vertical coordinate used
1133      (and change sign: back to "logical" value: +1 when R increases downward)
1134    o added an include barrier to the default CPP_OPTIONS.h and
1135      removed the #include "PACKAGES_CONFIG.h" from it
1136    o fix a bug in mom_fluxform (from chk51j_post)
1137    
1138    checkpoint51j_post
1139    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1140    o adjusted some flow directives (dynamics, thermodynamics)
1141    o added cubed-sphere case to test cost function
1142    o heckpoint_lev?_directives.h now include
1143      pkg-specific directives, whenever those are enabled.
1144    o Moving pkg-specific flow directives to corresponding pkg
1145      Moving pkg-specific differentiation list to corresponding pkg
1146      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1147      ---> conventions are
1148           - pkg_ad.flow
1149           - pkg_ad_diff.list
1150           - pkg_ad_check_lev?_dir.h
1151    
1152    checkpoint51i_post
1153    o merge of the branch-genmake2
1154      - knowingly breaks the older genmake
1155      - automatic generation of all ALLOW_${PKG_NAME} defines
1156      - new testreport supersedes older testscript
1157    o large number of package inclusion and header cleanups
1158    checkpoint51i_pre
1159    
1160    o new output for adjoin of global ocean vector invariant
1161    o fix for checkpoint of thermodynamic seaice and bulk_force
1162    o Steph gchem various cleanups
1163    
1164    checkpoint 51h_pre
1165    o fixed some single quotes
1166    o modify gchem pkg to be more versatile
1167    o modifications to clean up dic pkg
1168    o add pkg/cfc
1169    
1170    checkpoint51g_post
1171    o provide links for ARPACK and ADM*TLM
1172    o start removing verification/vero/
1173    o update AD-related stuff
1174      (in particular some IF-statements in model/src/ routines)
1175    o adding to verification/global_ocean.90x40x15/ adjoint of
1176      vector invariant setup
1177    
1178    checkpoint51f_post
1179    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1180    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1181      of tracer Green's fucntions for ocean inversion project.
1182    
1183    checkpoint51f_pre
1184    o Added on-the-fly spatial interpolation capability
1185        "USE_EXF_INTERPOLATION" to pkg/exf.
1186      - This is a temporary Cartesian-grid hack until
1187        the super-duper ESMF coupler becomes available.
1188      - See verification/global_with_exf/README for usage example.
1189      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1190        flags and modified pkg/seaice accordingly.
1191    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1192        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1193        non-local transport term.
1194    
1195    checkpoint51e_post
1196    o pkg/mom_vecinv:
1197      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1198      - add time-ave diagnostic of vorticity advection.
1199    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1200    o atmospheric geopotential: - include water vapor effect;
1201                                - use p^kappa in p* scaling.
1202    o land pkg: read initial state from files.
1203    o AIM : add stratospheric drag in the upper level
1204    
1205    checkpoint51d_post
1206    o change function ILNBLNK (=> last non-blank char.) to return zero
1207      (instead of the string length) when the string. char is empty
1208    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1209    o modif's to restore TAMC compatibility
1210      - avoid "_d" constructs in PARAMETER declarations
1211      - avoid interrupting lines by comment lines
1212    o Use cluster local disks for purely local I/O
1213      vs. globally visible disks needed for ctrl stuff
1214      (merged from ecco-branch)
1215      - new active_file_loc... and mdsio_..._loc routines
1216      - affected packages: autodiff, ctrl, grdchk, mdsio
1217    
1218    checkpoint51c_post
1219    o introducing integer flag debugLevel
1220      - debLevZero: suppress all output
1221      - debLevA: standard
1222      - debLevB: equivalent to current debugMode=.TRUE.
1223    o introducing pathname variable mdsioLocalDir for mdsio
1224      that can be specified at runtime
1225      (relevant for cluster I/O to local disk)
1226    `
1227    >>>checkpoint51b_post
1228    adjoint of ptracers
1229    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1230    o extended state in checkpoint_lev?, etc.
1231    o alternative ctrl/cost with tr1 or ptracer
1232    o new comlev1_bibj_ptracers
1233    o new ptracers.flow
1234    o made ptracers_forcing same as external_forcing_s
1235    o added verification for adjoint with ptracers
1236      - adm. grdchk fail so far
1237      - tlm. grdchk OK
1238      - checked tapelev/comlev recomputations: OK
1239    <<<checkpoint51b_pre
1240    
1241    checkpoint51a_post
1242    o added code for biogeochemistry package
1243      - new pkgs: dic, gchem
1244      - new subroutine in ptracers
1245    o modify code for biogeo packages
1246      - in model/src and pkg/ptracers
1247    
1248    checkpoint51
1249    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1250      - autodiff, ctrl, exf, grdchk, seaice
1251      kept separate packages
1252      - cost, ecco, obcs
1253    o updating verification/internal_wave, verification/lab_sea
1254      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1255    
1256    checkpoint50i_post
1257    o Preparing next differentiable checkpoint and sync
1258      of MAIN vs. ecco-branch
1259      - 1st step: this one is differentiable
1260      - 2nd step: next(! not this) checkpoint will have updated packages
1261                  from ecco-branch)
1262    
1263    checkpoint50h_post
1264    o new package "land": provide surface BC for AIM.
1265    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1266    o AIM: use true log-P extrapolation for near surface temp (= as in
1267        F.Molteni paper) ; update aim.5l_cs output.
1268    o New variable in PARM03 for more flexible pickups
1269    o somewhat cleaned package initialisation sequence for
1270      ctrl/ cost/ ecco/ in packages_... routines
1271    
1272    checkpoint50g_post
1273    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1274      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1275      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1276        made the default because of faster convergence than ADI
1277    
1278    checkpoint50f_post
1279    o exf totally restructured
1280      - replaced all exf_set_ routines by one generic exf_set_gen.F
1281        and made sure it's still differentiable
1282      - split exf_getffields.F into new exf_bulkformulae.F
1283      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1284      - updated adjoint/makefile and relevant verif. accordingly
1285    
1286    checkpoint50f_pre
1287     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1288          + change Evap over land. (update aim.5l_cs output)
1289     o added missing .cvsignores and made uniform across expts
1290     o changed configuration of tidal_basin_2d expt
1291     o added pkg/debug functions for tracing code in fatal crashes
1292     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1293     o new fn in pkg/monitor to stop model if solution grows too big
1294     o removed lots of single quotes from comments
1295    
1296    checkpoint50e_post
1297    o make KPP work with PTRACERS
1298     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1299       nearly a copy of kpp_transport_s
1300     - there is no analogue to SurfaceTendencyS, so I have to use
1301       gPtr(of the surface layer) instead
1302    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1303    checkpoint50e_pre
1304    
1305    checkpoint50d_post
1306    o change kpp output from multiple-record state files to single-record state
1307      files analogous to write_state.F
1308    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1309      analogous to the cg2d-related output.
1310    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1311      so that writing to internal file fn (with length 512) fails.
1312    checkpoint50d_pre
1313    
1314    checkpoint50c_post
1315    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1316    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1317    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1318    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1319    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1320    
1321    checkpoint50c_pre
1322    Merging from release1_p13:
1323    o bug fix for pkg/seaice dynamic solver
1324    o Added SEAICE_initialHEFF to pkg/seaice
1325    
1326    checkpoint50b_post
1327    o store u*,v* in gU,V instead of in guNm1,gvNm1
1328    o in order to put the momForcing out of the Adams-Bashforth:
1329      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1330      to timestep.F
1331    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1332    o re-generate output for highly sensitive test-exp:
1333       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1334    
1335    checkpoint50b_pre
1336    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1337    o corrected CPP option mismatch in exf_Bulk... functions for case
1338      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1339    
1340    checkpoint50a_post
1341    o Bug fix for merging between c50 and KPP.
1342      ikey was passed from thermodynamics to kpp_calc via
1343      common block rather than being recomputed in kpp_calc,
1344      in contradiction with new key itdkey.
1345      New key ikppkey created, and tamc.h headers updated.
1346    
1347    checkpoint50
1348    - 2nd step of merge with ecco-branch:
1349      merge changes in ecco-branch back into main trunk
1350    - bug fix in find_alpha
1351    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1352    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1353    - merged some sliced AD support routines
1354    
1355    checkpoint49
1356    merged from ecco-branch:
1357    o exf:
1358      - Enable initialisation of forcing fields to constant
1359        (runtime) values.
1360      - in exf_getffields.F
1361        Reduce i-/j-loop to interior domain, discarding overlaps.
1362        That also fixes wrong TAF-key computations for key_1, key_2
1363        with bulf formulae.
1364      - exf_init.F modify #ifdef for exf_init_evap
1365      - exf_getffieldrec.F, ctrl_getrec.F
1366        The following INT-usages are not safe:
1367          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1368          fldcount = int(fldsecs/fldperiod) + 1
1369        and were modified.
1370    o autodiff: checkpoint_lev...
1371      - updated storing for bulk formulae (some arrays were missing)
1372      - added state for seaice package
1373      - synchronized with main branch
1374    o DIVA:
1375      Modif.s in
1376      - the_main_loop.F
1377      - the_model_main.F
1378      and added cost_final_restore.F cost_final_store.F
1379      o With these changes, it is possible to fully separate
1380        the first forward run to compute the cost function (mdthe_main_loop)
1381        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1382        into separate model executions.
1383        This enables better tuning of DIVA to given queue sizes.
1384      o Loss of cost function value in consecutive DIVA runs is
1385        fixed by storing to 'costfinal' file.
1386      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1387        beginning/end of adjoint integration is accounted for.
1388      The current changes apply to TAF-1.4.26.
1389      TAF has one remaining bug, requiring one manual change
1390      (see MITgcm manual).
1391    o cal: synchronized between MAIN and ecco-branch
1392    
1393    checkpoint48i_post
1394    o Changes to restore differentiability of code w.r.t. previous tag
1395      (mostly adding new routines to make list and replacing
1396      pressure by totPhiHyd).
1397    o Updated and merged grdchk package
1398      - has both ADM and TLM checks
1399      - works for single- and multi-proc.
1400      - output cleaned
1401      - worked successfully for parallel DIVA
1402    o genmake:
1403      - Adding -platform=SP4
1404      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1405    o Modif. for DIVA:
1406      ctrl_unpack should not be called in intermediate DIVA interval.
1407      (similar thing would apply for active files such as
1408      tbar, sbar, psbar, which should not be reinitialised;
1409      only relevant for ecco-branch)
1410    
1411    checkpoint48h_post
1412    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1413    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1414    o Added SEAICE_initialHEFF to pkg/seaice
1415    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1416    
1417    checkpoint48g_post
1418    --- EOS:
1419    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1420      store total Potential in totPhyHyd for diagnostics & EOS.
1421    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1422    --- Pressure/geopotential gradient:
1423    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1424    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1425      ( changes results of global_ocean_pressure )
1426    o NLFS + z-coord.: add eta*Rho' contribution.
1427    o accurate phiHyd when using interface-W at the middle between 2 centers
1428     ( changes results of ideal_2D_oce )
1429    o includes r* 2nd term in potential gradient.
1430    
1431    checkpoint48f_post
1432    Merging from release1_p12:
1433    o Modifications for using pkg/exf with pkg/seaice
1434      - improved description of the various forcing configurations
1435      - added basic radiation bulk formulae to pkg/exf
1436      - units/sign fix for evap computation in exf_getffields.F
1437      - updated verification/global_with_exf/results/output.txt
1438    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1439      (SBO) core products, including oceanic mass, center-of-mass,
1440      angular, and bottom pressure (see pkg/sbo/README.sbo).
1441    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1442      to avoid negative values in shallow regions.
1443      - updated verification/natl_box/results/output.txt
1444      - updated verification/lab_sea/results/output.txt
1445    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1446    o Added useSingleCpuIO option (see PARAMS.h).
1447    o Updated useSingleCpuIO option in mdsio_writefield.F to
1448      work with multi-field files, e.g., for single-file pickup.
1449    o pkg/seaice:
1450      - bug fix in growth.F: QNET for no shortwave case
1451      - added HeffFile for specifying initial sea-ice thickness
1452      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1453    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1454      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1455    o pkg/seaice:
1456      - adjoint-friendly modifications
1457      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1458    
1459    checkpoint48e_post
1460    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1461    o dynamics: change definition of computational domain & adapt mom_fluxform
1462      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1463    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1464        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1465        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1466        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1467        inverted_barometer solid-body.cs-32x32x1
1468      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1469    
1470    checkpoint48d_post
1471    o in preparation for r*:
1472     a) use pre-computed gradient of hydrostatic potential:
1473        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1474     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1475        => affects results of glob_oce_pressure (different truncation error)  
1476      update output.txt of ideal_2D_oce & global_ocean_pressure
1477    
1478    checkpoint48d_pre
1479    o in preparation for r*:
1480      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1481      pass the 2 comp. of the grad. as arguments to momentum S/R.
1482      but for the moment, only used if it does not change the results.
1483    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1484    
1485    checkpoint48c_post
1486    Modifications in treatment of initial flux forcing controls
1487    to avoid extra storing of flux fields.
1488    
1489    checkpoint48c_pre
1490    o Added tidal_basin_2d experiment (currently 1D!)
1491    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1492    
1493    checkpoint48b_post
1494    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1495     (modification to pressure gradient not yet implemented)
1496    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1497      (for U & V) that are used for vertical advection of momentum.
1498    
1499    checkpoint48a_post
1500    o In preparation for r*, use temp. array to compute vertical transport
1501       in flux-form momentum pkg. => change results of few test-exp.
1502      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1503                        lab_sea, natl_box & plume_on_slope
1504    
1505    checkpoint48
1506    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1507    
1508    checkpoint47j_post
1509    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1510    o moved adexch from forward_step to addummy_in_stepping
1511    o added exch in ctrl_map_...
1512    o aveFreq.=0. at end of cost_final to avoid overwrite in
1513      reverse checkpointing loop
1514    o Yet more changes in gmredi:
1515      * adgmredi_calc_tensor
1516        avoiding all recomputation of gmredi_slope_limit
1517      * adgmredi_x/y/rtransport
1518        added flag for excessive storing to avoid recomp. of
1519        u/v/rtans, dTdx/y/z
1520        -> this is not really necessary and very memory-consuming
1521      * adgmredi_slope_psi:
1522        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1523      * gmredi_slope_limit
1524        re-activated full calculation of taperfct for case 'ac02'
1525    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1526    
1527    checkpoint47i_post
1528    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1529    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1530      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1531    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1532    o gmredi: fix few bugs.
1533    
1534    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1535    This will be a good checkpoint to plug into the ecco-branch.
1536    o few modif.'s to get latest version adjointed
1537      (mainly kick out code in ini_linear_phisurf)
1538    o modif's to run adjoint with exactConserv
1539    o case GM_BOLUS_ADVEC should be cleaned
1540      S/R gmredi_slope_psi should be cleaned
1541    o verification/carbon now has exactConserv=.TRUE.
1542    
1543    checkpoint47g_post
1544    o time-average AIM output: becomes independent from statvars time-average
1545      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1546    o After TAF bug fix:
1547      Tested adjoint of gmredi package.
1548      Tests were done with checkpoint47 rather than with latest
1549      checkpoint47f_post since the latter is broken for the adjoint
1550      verification/carbon/ contains both ADM and TLM gradient checks.
1551    Here they are, before they get changed/lost/stolen.
1552    Mostly modif.'s to fix numerical sensitivities.
1553    Gradient checks OK for
1554    - GM_taper_scheme:
1555      * clipping
1556      * ac02
1557      * linear
1558      * glw91
1559      * dm95
1560      * ldd97
1561    - GMREDI_OPTIONS:
1562      * GM_VISBECK_VARIABLE_K
1563      * GM_NON_UNITY_DIAGONAL
1564      * GM_EXTRA_DIAGONAL
1565      * GM_BOLUS_ADVEC
1566    in conjunction with data.gmredi parameters to be checked in
1567    in a few minutes under verification/carbon/code/
1568    
1569    checkpoint47f_post
1570    Merging from release1_p10:
1571    o modifications for using pkg/exf with pkg/seaice
1572      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1573        and SEAICE_EXTERNAL_FLUXES
1574      - pkg/exf CPP options EXF_READ_EVAP and
1575        EXF_NO_BULK_COMPUTATIONS
1576      - usage examples are Experiments 8 and 9 in
1577        verification/lab_sea/README
1578      - verification/lab_sea default experiment now uses
1579        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1580    
1581    checkpoint47e_post
1582    o created a tag prior to creating a branch
1583    
1584    checkpoint47d_post
1585    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1586      at the bottom boundary had an erroneous half slip boundary condition
1587    o added bottom drag and no slip boundary condition capabilities to
1588      oceanic pressure coordinates code
1589    o added new verification experiment global_ocean_pressure, this experiment is
1590      also described in the tutorial section of the manual
1591    checkpoint47d_pre
1592    
1593    checkpoint47c_post
1594    o Added a verification experiment for a global cubed-sphere ocean run
1595      -  verification/global_ocean.cubed32x32x30
1596      -  uses pkg/therm_seaice and pkg/bulk_forcing
1597    
1598    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1599    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1600      when using P-coordinate; only implemented for atmospheric config.
1601    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1602      NOTES: requires option NONLIN_FRSURF to be "#define".
1603    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1604    
1605    checkpoint47b_post
1606    Merging from release1_p9:
1607    o pkg/seaice
1608      - removed GOTO's and added taf directives
1609      - double precision constants to reduce the g77 (Linux)
1610        to F77 (SGI) differences reported in release1_p8
1611    o tools/genmake
1612      - added SGI options
1613    o verification/testscript
1614      - updated to that of checkpoint47a_post
1615    o verification/global_ocean.90x40x15/input/eedata
1616      - modified for SGI f77 compatibility
1617    o verification/lab_sea
1618      - added description of sea-ice model
1619      - added missing matlab routines
1620      - added test of thermodynamics parallelization
1621    
1622    checkpoint47a_post
1623    o new pkg: aim_v23
1624     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1625       for now, keep the same surface forcing as before.
1626     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1627     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1628     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1629    o add diagnostic of surface correction term in monitor output
1630    
1631    o bulk_force and therm_seaice
1632    - Two packages:  bulk_force (Bulk forcing)
1633      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1634    - Earlier integration from Stephaine Dutkiewicz
1635      and Patrick Heimbach.
1636    - Two ifdef statements for compile time,
1637       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1638    
1639    checkpoint47
1640    differentiable version of checkpoint46n_post
1641    o bug fix in quasihydrostaticterms
1642    o * "clean" adjoint code (in terms of extensive recomputations)
1643        can now be obtained for all GMREDI options (i.e. for
1644        - GM_VISBECK_VARIABLE_K
1645        - GM_NON_UNITY_DIAGONAL
1646        - GM_EXTRA_DIAGONAL
1647        - GM_BOLUS_ADVEC )
1648      * However, wrong gradient check problem remains unsolved.
1649      * New CPP options have been introduced for different
1650        tapering schemes
1651    o external_fields_load now part of differentiation list
1652    o pressure needs multiple storing;
1653      would be nice to have store_pressure at beginning or
1654      end of forward_step, e.g. by having phiHyd global (5-dim.)
1655      (NB: pressure is needed for certain cases in find_rho,
1656      which is also invoked through convective_adjustment).
1657    o recomputations in find_rho for cases
1658     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1659    o #define ATMOSPHERIC_LOADING should be differentiable
1660    o ini_forcing shifted to begining of initialise_varia
1661    o Incorporating QNVS line search routines into MITgcm
1662      (this is separate code, and therefore not under pkg)
1663      lsopt/, optim/
1664    o Updated verification/carbon/
1665      - #define GM_VISBECK_VARIABLE_K
1666      - GM_taper_scheme    = 'ldd97'    
1667    
1668    checkpoint46n_post
1669    Merging from release1_p8:
1670    o verification/natl_box:
1671      updating new external_fields_load routine
1672    o New package: pkg/seaice
1673      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1674      The sea-ice code is based on Hibler (1979-1980).
1675      Two sea-ice dynamic solvers, ADI and LSR, are included.
1676      In addition to computing prognostic sea-ice variables and diagnosing
1677      the forcing/external data fields that drive the ocean model,
1678      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1679      The implied surface heat flux is then stored in variable
1680      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1681      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1682      non-local transport term.  Because this call precedes model
1683      thermodynamics, temperature under sea-ice may not be "exactly" at
1684      the freezing point by the time theta is dumped or time-averaged.
1685      N.B.: fairly large differences in accuracy occur across
1686            different platforms/compilers; comparison between
1687            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1688            generated output gives:
1689       T           S           U           V
1690      C D M    c        m  s        m  s        m  s        m  s
1691      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1692      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1693      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1694    
1695      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1696    o GAD:
1697      - generated new common blocks to account for call of
1698        same gad routines with differing traceridentities
1699        (needed to modify tracerIdentity indices in GAD.h)
1700      - generated separate common blocks for case useCubedSphereExchange
1701        (Department of Futurology)
1702      - parameter lists to gmredi_?transport: added tracerIdentity
1703      - added new key indices to tamc.h
1704    o external_fields_load:
1705      - added this routine to TAF list
1706      - needed to make some common blocks global and additional storing
1707        along the same lines as exf package (checkpoint_lev?_directives.h)
1708    o exf:
1709      updated external forcing package
1710      - bug fixes carried over from ecco-branch
1711        (missing OBCS_OPTIONS.h in two routines)
1712      - enable easy to use "no forcing".
1713      - added exf I/O for atmospheric loading
1714      - added exf I/O for runoff data
1715      - transfered scaling between exf <-> MITgcm to exf namelist
1716    o Adding new verification experiment global_with_exf.
1717      This verification experiment is almost identical to the
1718      global_ocean.90x40x15 experiment, except that it uses
1719      the exf (and cal) package instead of the
1720      external_fields_load routine (cf README file).
1721    
1722    checkpoint46m_post
1723    o modified testscript to return -- when there are no lines of "%MON" output
1724    o added new flag "quasiHydrostatic" for QH mode
1725      and new routine quasihydrostaticterms()
1726    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1727      New routine: mom_u_coriolis_nh()
1728    o fixed sign of non-hydrostatic metric terms in u and v equations.
1729      Depend on correct sign of gravitySign.
1730    o added work.pc* to .cvsignore in aim directories using ifc
1731    o introduced flag for controllin non-hydrostatic metric terms
1732    o removed gravitySign from PARM04
1733    o switched to g77/ifc from pgf77 in aim experiments
1734    
1735    checkpoint46l_post
1736    o made convective adjustment work with pressure coordinates:
1737     - changed the direction of k-loop in convective_adjustment.F for the
1738       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1739     - adjusted the reference pressure k-index in convective_adjustment.F
1740     - adjusted the convection condition in convect.F (in analogy to
1741       calc_ivdc.F)
1742     - convective_adjustment no longer computes anything on the halos
1743     - removed the warnings about negative salinity from find_rho.F and
1744       find_alpha.F; instead the new routine look_for_neg_salinity, called
1745       at the beginning of find_rho, find_alpha, and find_beta, does a
1746       check of the entire slice, if CPP-option
1747       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1748    checkpoint46l_pre
1749    
1750    checkpoint46k_post
1751    o fixed the verification/global_ocean.90x40x15 experiment:
1752     - new bathymetry (the world according to A., JMC, and M.)
1753     - new initial fields and forcing fields (*.bin files)
1754     - new POLY3.COEFFS (for the next release one should switch to a full
1755       equation of state: JMD95P or MDJWF)
1756     - fixed several errors and redundancies in the data file
1757     - experiment uses looped cells
1758     - added matlab directory with diagnostic scripts for plotting of output
1759    
1760    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1761     - read AIM physics parameters from a file (data.aimphys)
1762     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1763    
1764    checkpoint46j_post
1765    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1766    o move wVel computation at the end of the time step, in S/R integr_continuity
1767    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1768    o update timeave pkg for wVel diagnostic.
1769    checkpoint46j_pre
1770    
1771    checkpoint46i_post
1772    o Clean up AIM package (and keep the results unchanged):
1773      include CPP_OPTION and use IMPLICT NONE in all routines ;
1774      declare all the variables _RL ; use _d 0 for all numerical constants.
1775      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1776    
1777    checkpoint46h_post
1778    o cleaned up the use of rhoNil and rhoConst.
1779      - rhoNil should only appear in the LINEAR equation of state, everywhere
1780        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1781        and the dynamical equations are all divided by rhoConst
1782    o introduced new parameter rhoConstFresh, a reference density of fresh
1783      water, to remove the fresh water flux's dependence on rhoNil. The default
1784      value is 999.8 kg/m^3
1785    o cleanup up external_forcing.F and external_forcing_surf.F
1786      - can now be used by both OCEANIC and OCEANICP
1787    checkpoint46h_pre
1788    
1789     Added code to convert surface volume flux (fresh water) into
1790     a mass flux when using P coordinates in the ocean (OCEANICP).
1791     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1792    
1793    checkpoint46g_post
1794    o Include a new diagnostic variable phiHydLow for the ocean model
1795      - in z-coordinates, it is the bottom pressure anomaly
1796      - in p-coordinates, it is the sea surface elevation
1797      - in both cases, these variable have global drift, reflecting the mass
1798        drift in z-coordinates and the volume drift in p-coordinates
1799      - included time averaging for phiHydLow, be aware of the drift!
1800    o depth-dependent computation of Bo_surf for pressure coordinates
1801      in the ocean (buoyancyRelation='OCEANICP')
1802      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1803        Theta, Salinity, and Pressure in the parameter list. This routine is
1804        presently contained in find_rho.F. This routine does not give the
1805        correct density for 'POLY3', which would be a z-dependent reference
1806        density.
1807    o cleaned up find_rho
1808      - removed obsolete 'eqn' from the parameter list.
1809    o added two new verification experiments: gop and goz
1810      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1811    checkpoint46g_pre
1812    
1813    checkpoint46f_post
1814    o Enable tangent linear (forward mode) gradient checks:
1815      - extended active file handling to g_... files
1816      - added TANGENT_SIMULATION to theSimulationMode
1817      - extended grdchk package accordingly
1818    o added tangent linear setup in verification/carbon/code_ftl
1819    o added adjoint setup in verification/front_relax/code_ad
1820    
1821    checkpoint46e_post
1822    o Added new equation of state -> MDJWF
1823      - EOS of McDougall et al., 2002, JAOT, submitted
1824      - caveat: the equation of state is only valid for a smaller (more
1825        realistic?) range of values than JMD95P/Z and UNESCO
1826      - added masks to the calculation of pressure in store_pressure
1827      - added more check values for density in check_eos (ini_eos.F), some of
1828        the old check values are out of the range of the MDJWF-eos, so don't
1829        expect perfect matches for those
1830    checkpoint46e_pre
1831    
1832    checkpoint46d_post
1833    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1834      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1835      case of pressure coordinates. eosType='JMD95Z' in
1836      combination with buoyancyRelation='OCEANICP' now causes an error.
1837    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1838      in find_alpha/beta.
1839    checkpoint46d_pre
1840    
1841    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1842      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1843    
1844    checkpoint46c_post
1845    o Changes necessary for ocean in p-coordinates
1846     -  Added new buoyancy relation = 'OCEANICP'
1847     -  Added new parameters = gravitySign (this used to be contained inside
1848        the factor dRdZ which I added when we first switched to R coordinates).
1849     X GM/Redi is not compatible (yet)
1850     X bottom drag and no-slip need to be debugged.
1851    checkpoint46c_pre
1852    
1853    checkpoint46b_post
1854    o Added new equation of state -> JMD95Z and JMD95P
1855      - EOS of Jackett and McDougall, 1995, JAOT
1856      - moved all EOS parameters into EOS.h
1857      - new routines ini_eos.F, store_pressure.F
1858    o Added UNESCO EOS, but not recommended because it requires
1859      in-situ temperature (see JMD95)
1860    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1861      unesco.f to be used with POLY3
1862    checkpoint46b_pre
1863    
1864    checkpoint46a_post
1865    o Added (atmospheric) pressure loading
1866      - new field in FFIELDS.h, etc...
1867      - new cpp flag ATMOSPHERIC_LOADING
1868    o Changed hFacC to _hFacC in calc_phi_hyd.F
1869    o Added SHORTWAVE_HEATING to some files for consistency
1870    checkpoint46a_pre
1871    
1872    checkpoint46
1873    further merges from release1_p5
1874    o new ctrl package
1875      - adopted from ECCO environment to enable optimization
1876      - added Eliassen Palm fluxes to controls
1877    o added Eliassen Palm flux controls to gradient check package
1878    o cost package
1879      - Compatible with new ctrl package
1880      - added Eliassen Palm cost hooks
1881      - modif's of existing cost functions
1882    o Adjoint-related bug fixes in kpp:
1883      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1884      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1885    o autodiff package
1886      - flow directives:
1887        + new for S/R do_the_model_io
1888        + enhanced for S/R checkpoint
1889        + new gmredi.flow
1890      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1891        disable adcommon.h/g_common.h by default.
1892      - fixed problem for adjoint of global_max
1893    o modified verification/carbon/
1894    o New setup for adjoint of global_ocean
1895    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1896    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1897    o incorporated hooks for sponge layer code (external_forcing.F)
1898    
1899    checkpoint45d_post
1900    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1901    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1902      (affects plume_on_slope "cg2d" output)
1903    o add new parameter deltaTfreesurf for free-surface time stepping
1904    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1905    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1906    o change phiMin in exp1 (to agree with documentation)
1907    o add new flags:
1908     - T,S forcing inside/outside Adams-Bashforth
1909     - turn off temp,salt advection and/or forcing
1910     - for each tracer, define internal flag for multiDimAdvection & A-B
1911    o monitor: change definition of KE to check conservation of Energy
1912    
1913    checkpoint45c_post
1914    o Removed f90 comments ("!")
1915    o Modified initialisations to enable exf package for MITgcm
1916      (without invoking ECCO_PACKAGE).
1917    o modifications to gradient check package (Martin Losch)
1918      - enable centered differences
1919      - modified format of standard output
1920    
1921    checkpoint45b_post
1922    o cleaned exchange calls in cg2d
1923    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1924    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1925      to configure barotropic setup (Martin Losch)
1926    o moved some initialisations within bi,bj loop in dynamics
1927      (TAF flow dependency)
1928    o in initialise_varia, moved call packages_init_variables
1929      before convective_adjustment_init
1930      (corresponding adjustment of TAF tape initialisation).
1931    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1932    
1933    checkpoint45a_post
1934    o compute Rho over the whole domain (extend iMin,jMin indices)
1935    o specific exchange for X-slice domain (case Ny=1)
1936    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1937    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1938    
1939    checkpoint44h_post = checkpoint45
1940    o Fix to restore differentiability:
1941      place at which packages_init_variables is called in
1942      initialise_varia is crucial for reverse control flow.
1943    o modifications in GMRedi to enable stable adjoint
1944      (corresponding modif's in thermodynamics, dynamics)
1945    o added missing hook for sponge layer code in external_forcing
1946    o modified test cost functions
1947    o storing in gad_advection (plus removal of write(0,*)!
1948    o missing headers TR1.h added in convective_adjustment routines
1949    o errorMessageUnit set non-equal zero in eeboot
1950      (conflict on some platforms, e.g. IBM SP3)
1951    o modified carbon verif.
1952    
1953    checkpoint44h_pre
1954    o vertical grid option: allow to put the Interface at the middle between
1955      2 cell-centers ; replace delZ in pkg/kpp by drF.
1956    o GM Advective form: Tracers are advected using the residual transport (=
1957      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1958    
1959    checkpoint44g_post
1960    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1961      results) ; ifdef missing in thermodynamics.F
1962    
1963    checkpoint44f_pre,checkpoint44f_post
1964    o added PTRACERS package
1965      This allows an arbitrary number of passive tracers to be integrated
1966      forward simultaneously with the dynamicaly model.
1967      + Implemented so far:
1968        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1969        - I/O and checkpointing
1970        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1971      + Not implemented so far:
1972        - KPP
1973        - OBCS
1974      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1975        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1976        line in data.pkg.
1977      + This package is disabled by default since it increases storage.
1978    
1979    
1980    o testscript: added -cleanup option
1981    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1982                 b) enable to filter 2D fields.
1983    
1984    checkpoint44e_pre,post
1985    o re-wrote convective adjustment to use pre-calculated weights
1986      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1987      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1988      Original calls to convect() still in place.
1989    
1990    chkpt44d_pre,post
1991    o added missing EXCLUDE_MONITOR flags
1992    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1993      (incompatible typ in MIN/MAX expressions caused problems
1994      on IBM SP3)
1995    o in genmake added variable MAKEDEPEND
1996      plus resetting for case SunOS
1997    o added timer_stats.c routine for IBM SP3
1998    o removed variables in dynamics
1999    !!! I forgot to create tag chkpt44d_pre !!!
2000    !!! But chkpt44d_pre = chkpt44c_post    !!!
2001    
2002    o real fresh water flux implemented with non-linear free-surface.
2003    
2004    chkpt44c_pre,post
2005    o few fix (mask in shap_s2, EmPmR in external_field_load,
2006      USE_NATURAL_BCS in solve_for_P);
2007    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2008    
2009    checkpoint44b_pre/_post
2010    o merge of relevant stuff from the ecco-branch:
2011      - genmake: removed $S64 overwrite for case SunOS
2012      - pkg/exf: update and corrections for field swapping and obcs
2013      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2014                  harmonized between ECCO and MITgcm
2015      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2016                      updated checkpointing_lev... lists for obcs
2017      - model/src: minor changes in forward_step, plot_field
2018                   added directive for divided adjoint in the_main_loop
2019      - pkg/mdsio: added mdsio_gl_slice
2020    
2021    o check parameters & config (chkpt44a_pre,post)
2022    o OBC and NonLin_FrSurf.
2023    
2024    checkpoint44
2025    o fix bug in mom_vi_del2uv
2026    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2027    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2028    o update AIM experiments (NCEP input files)
2029    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2030    o added some stuff for AD
2031    
2032    checkpoint43
2033    o added two new advection tests
2034    o added global 4x4 degree ocean test
2035    o added test of H&S94 with free surface on cube
2036    o some final mods for gradient check, adjoint,...
2037    
2038    checkpoint42
2039      Fixed AD-related problems:
2040    o Store directives up-to-date with re-arranged Adams-Bashforth
2041      (mainly thermodynamics.F)
2042    o New store directives for multi-dim. advection schemes
2043      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2044      * new common block and key passkey
2045      (mainly gad_advection.F)
2046    o Modified store directives for split of dynamics/thermodynamics
2047      for the case ALLOW_KPP
2048    o Cleaned argument list for timestep_tracer.F
2049    
2050    checkpoint41
2051    o re-formatted/added comments in prologues of key subroutines
2052      to work with protex
2053    
2054    checkpoint40
2055    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2056    o added FLT (floats) package from Arne along with demo. experiment
2057    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2058      implementation of forward-in-time forcing terms
2059    o more mods for non-linear free-surface including new variable
2060    o modified multi-dim method to work on cube
2061    o bug fix in KPP (from DM)
2062    
2063    checkpoint40pre9
2064    o added DST advection schemes
2065    o fix MPI bug on SGI's
2066    o modifications for non-linear free-surface
2067    o fixed conditionals for fixed flow/passive tracer only mode
2068    o added tension/strain form of stress tensor
2069    o changes to commenting of arguments for TAF/TAMC
2070    o added/updated many matlab scripts
2071    o added multi-dimensional advection method for tracers
2072      
2073    checkpoint40pre8
2074    o new package rw/
2075      Added method for dumping intermediate local arrays:
2076      mdsio_writetile - same as mdsio_writefield except works from inside
2077                        bi,bj loop
2078      mdsio_writelocal - same as mdsio_writetile except works for local
2079                         arrays
2080      write_local_r? - higher-level wrapper for mdsio_writelocal
2081      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2082      Example given at end of mom_vecinv.F that dumps some local arrays.
2083    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2084      control flux-form versus vector invariant code.
2085      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2086      or genmake -DISABLE ...
2087    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2088      (additional storing is now needed for case vecinv;
2089      currently nothing implemented to switch this storing off
2090      in case fluxform is used since no CPP flag available).
2091    
2092    checkpoint40pre7
2093    o bug fix in dynamics.F
2094      calc_viscosity called before k=1,Nr loop.
2095    o added some #ifdef's ALLOW_PASSIVE_TRACER
2096    o cleaned initialisations in ctrl_map_ini
2097      related to TAF
2098    
2099    checkpoint40pre6
2100    o split dynamics into thermodynamics & dynamics
2101    o corresponding split of calc_diffusivity into
2102      calc_diffusivity, calc_viscosity
2103      (kpp_calc_diff, kpp_calc_visc).
2104    o Added diffkr, kapgm to control variables
2105    o bug fix in gmredi_slope_limit for ldd97
2106    
2107    checkpoint40pre5
2108    o proper initialization of Adams-Bashforth time stepping
2109      + uses forward step for very first step of model (iter=0)
2110    o re-generated *all* output since almost all output is modified by this
2111      change (sorry but we've been putting this one off for about 2 years)
2112      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2113        *not* regenerated since they are already out of date and I don't
2114        want to create the impression that they are suddenly working.
2115    o removed KAP stuff for DEC's
2116    o modified/added many .cvsignore files in */code and */input
2117    o added new expt "solid-body.cs-32x32x1"
2118      + this uses an alternative form of ini_curvilinear_grid.F which
2119        is not necessarily any better than the current one...
2120    
2121    checkpoint40pre4
2122    o added re-initialisations of utrans,vtrans,rtrans in
2123      calc_common_factors which are crucial for TAF.
2124    o extended iMin,jMin range for calc_common_factors,
2125      calc_diffusivity
2126    o added option ALLOW_PASSIVE_TRACER
2127    o a few minor updates and fixes
2128    
2129    checkpoint40pre3
2130    o created calc_gtr1.F for gad package
2131    o split the_main_loop and re-introduced forward_step
2132    o some recomputations of nIter0 for TAMC
2133    
2134    checkpoint40pre2
2135    o Updated to latest branch of AJA, JMC
2136    o Added gradient check package
2137    o Added routines for passive tracer handling
2138    o Added carbon sequestration sensitivity experiment
2139    
2140    checkpoint39
2141     o Modifications and fixes to support TAMC
2142       (mainly missing or wrong directives)
2143     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2144       in addummy_in_stepping
2145     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2146     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2147     o Included following packages:
2148       cal: calendar
2149       exf: external forcing
2150       ecco: essential routines to control use of cal, exf
2151             (NB: this is not the full ECCO environment)
2152     o disabled some packages by default in genmake
2153    
2154  checkpoint38  checkpoint38
2155   o see notes_c37_adj.txt   o see notes_c37_adj.txt
2156   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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