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revision 1.10 by cnh, Wed Jul 8 15:40:09 1998 UTC revision 1.510 by edhill, Wed Jul 6 02:13:52 2005 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o add mnc output capability to diagnostics/diagstat and update
8      our cvsignore files for the ACSII output generated
9    
10    checkpoint57k_post
11    o lab_sea now uses diagnostics package and provides a suite of
12      new EXF diagnostics output.
13    
14    checkpoint57j_post
15    o exf
16      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
17        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
18        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
19      * extended diagnostics output
20        - now includes all EXF variables
21        - hs, hl moved to common block
22        - separate S/R for diagnostics, called after ctrl vector is added
23        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
24        - EXFqnet contains true Qnet (i.e. includes qsw)
25      * updated verif. lab_sea, global_with_exf
26      * Rearranging hflux (exf_mapfields -> exf_getforcing)
27        to ensure that diagnostics sees a true EXFqnet
28    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
29    o diagnostics pkg: change pointers so that 1 diagnostic can be used
30      several times with different frequencies.
31    o mnc-ify the thsice package as requested by Daniel Enderton
32      - the monitor--MNC output needs work
33      - many attributes need to be added (most are currently blank)
34    o mnc-ify theaim_v23 package as requested by Daniel Enderton
35      - many attributes need to be added (most are currently blank)
36    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
37    o add Sadourny like discretization to the 4th.O vorticity advection scheme
38    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
39      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
40         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
41    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
42     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
43    
44    checkpoint57i_post
45    o Diagnostics package was changed: diagnostic allocation is now deactivated
46      by setting an empty file name in the namelist (used to be by setting 0 frequency)
47    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
48      add 1rst Order upwind vertical Shear.
49    o add a quick fix for A/B checkpointing in OFFLINE mode
50    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
51      end-run around the C/Fortran linking horror in eesup/src/timers.F
52    o added pkg/runclock: allows user to terminate run based on wall clock
53    o added non-hydrostatic scaling parameter: nh_am2
54    o pkg/my82: futile attempt to make results compiler-independent by adding
55      some "_d 0", etc. no effect.
56    o for mnc output, fill the 'T' coordinate var with myTime and create a
57      separate 'iter' variable for iteration count
58    o pkg/diagnostics:
59      add new capability: output of Global/Regional & per-level statistics ;
60      tested against monitor output (including land & thSIce) on various exp.
61    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
62    
63    checkpoint57h_done
64      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
65      data.diagnostics, data.gchem, data.ptracers) is done.
66    
67    o pkg/diagnostics: prepare for Global/Regional statistics.
68      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
69    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
70      and rename it: DIFFERENT_MULTIPLE
71    
72    checkpoint57h_post
73    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
74    o pkg/diagnostics: change output frequency, now in seconds (instead
75      of Nb of iterations). This requires to change data.diagnostics.
76    checkpoint57h_pre
77    
78    o in mnc, let the user create the output dir if both mnc_outdir_date
79      and mnc_outdir_num are false
80    o add fflags() to pkg/diagnostics which allows one to specify, on a
81      per-file basis, the file precision [default behavior is unchanged]
82    o added diagnostics to pkg/kpp, including computation of mixed layer
83      depth based on a temperature/density criterion
84    o updated verification/natl_box to test the new pkg/kpp diagnostics
85    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
86    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
87    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
88      not mnc -- this mistake was found by JMC and is now corrected
89    
90    checkpoint57g_post
91    o add Adams-Bashforth 3rd Order time stepping:
92      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
93      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
94    checkpoint57g_pre
95    
96    o make lambda[Theta,Salt]ClimRelax spatially varying
97      (default remains spatially uniform constant based on tau)
98    o added new control variables
99      * init. uVel, vVel, etanN
100      * lambda[Theta,Salt]ClimRelax
101    o separate masks used for ctrl_pack/unpack 'from write_grid' output
102      (suggested by G. Forget)
103    
104    checkpoint57f_post
105    o add parameter "baseTime" = model base time = time at iteration zero
106      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
107      account for baseTime shift
108    o move Coriolis arrays from PARAMS.h to GRID.h
109    checkpoint57f_pre
110    
111    o mnc-ifying the seaice package
112    o introduced an alternative length scale calculation for use in the limiting
113      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
114    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
115    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
116      as well as grad(vort3).  Made it compatible with both approximate form
117      for the cubed sphere and full form of these gradients.  Added flag
118      useFullLeith to select between approximate and full form.  
119    o add "d0" in getcon.F to reduce differences between compilers/platforms
120      update output.txt of exp. fizhi-gridalt-hs
121    o change port_rand funtion to allow to set the seed.
122    o fix obscure MNC bug involving conversion between reals and integers
123      - it caused no problems with certain (eg. gcc, ifc) compilers but the
124        new version is now more standards-compliant
125    o adjoint-related modifications
126      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
127      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
128      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
129    
130    checkpoint57e_post
131    o Adding eddy stress controls a la Ferreira et al.
132    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
133    
134    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
135      update output.txt of exp. fizhi-gridalt-hs
136    o add more "Z" dimensions and associated coordinate vars to MNC
137    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
138    o parameter calendarDumps: when set, approximate months (30-31 days) and years
139      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
140      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
141      months and years.  Requires pkg/cal.
142    o diagnostics: add pickup functionality
143      - off by default for backwards compatibility
144      - current version only uses MDSIO -- MNC will be added
145    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
146    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
147    
148    checkpoint57d_post
149    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
150    o modify verification/ideal_2D_oce so that it tests the creation of mnc
151      output from the diagnostics package
152    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
153    o make genmake2 more portable by using ".$FS" instead of ".f" for more
154      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
155    o add coordinate variables to the MNC output from the diagnostics package
156    o change MNC-flags default value: true when useMNC=TRUE
157    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
158      the ability (off by default) to read the grid information using MNC
159    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
160    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
161    o do snap-shot diagnostics at the middle of the time-interval (instead of
162      at the end).
163    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
164      new test for AIM with thSIce + slab-ocean
165    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
166    o move state variable diagnostics to the beginning of the time step ;
167      (note: still needs some work specially for snap-shot diagnostics)
168      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
169    
170    checkpoint57c_post
171    o Change testing option (-ieee) to get closer agreement between g77 & ifort
172    o generate new output.txt files on faulks with g77 & the new -ieee option
173    checkpoint57c_pre
174    
175    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
176      update output.txt of exp. global_ocean.90x40x15
177    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
178      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
179    o add saltFlux(+File) forcing capability with periodicExternalForcing
180    o allow to use pkg diagnostics for GM-Redi & ThSIce output
181    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
182    o improvements for the MNC output from DIAGNOSTICS:
183      - correct handling of the unlimitied dimension
184      - all dims now have associated coordinate variables
185      - variables located at U, V, and Corner ("Z") points are now written
186        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
187        *all* data points are output
188    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
189    o added pkg/seaice/seaice_monitor.F
190    o mdsio_readfield.F can now read files visible only to master MPI process.
191    o pkg/seaice: some test code for ice-modified ocean stress
192    o exf_getffields interpolation defaults to bilinear for all scalar forcing
193      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
194      spurious negative numbers for precipitation and humidity.  Will cause
195      some small numerical differences for integrations using pkg/exf/exf_interp.F.
196    o pkg/ctrl/
197      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
198        May be enabled via doPackDiag
199      *  introduce z-scaling of
200         + gradient (doZscalePack) and
201         + control (doZscaleUnpack)
202    o pkg/mdsio/
203      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
204      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
205    
206    checkpoint57b_post
207    o simplify options in diagnostics_fill arguments (remove weird combinations)
208    o fix MNC coordinate variables so that they now contain per-face index
209      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
210      general, EXCH2 grids are only aligned to a "local" coordinate system
211    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
212    o Implement instantaneous output within pkg diagnostics:
213      setting a negative frequency in data.diagnostics produces
214     "snap-shot" output (as opposed to time-average if freq > 0)
215    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
216      NOTE: change ptracer diagnostics name: use 2 characters to work with
217            more than 9 tracers. Add also diagnostics of advect & diffus flux.
218    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
219      becomes the coordinate variable for the 'T' dimension
220    o add CF-style coordinate variables to MNC
221      - just a first cut:  numbers are meaningless on the cubesphere and
222        missing along the T axis but otherwise it works!
223    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
224    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
225    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
226      this is based directly on what the model compute, so that the content of
227      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
228    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
229    o clean up build options files for SunOS, in particular
230      - remove -traditional from xmakedepend
231      - change -xarch=v9 to -xarch=native for f77
232      - restore use of make (not gmake)
233      - add CC=gcc if using g77
234    o changes per discussion of AM, JMC, & EH3 today:
235      - move redundant "grid" variables out of "state" -- in preparation of
236        creating proper CF-style coordinate variables and in recognition
237        that any/all grid variables can be easily copied (eg. w/NCO) from
238        the grid files into any of the other NetCDF files
239      - *always* output grid variables with MDSIO (this will eventually be
240        changed)
241      - output MNC grid file if useMNC is true
242    o every instance of _END_MASTER() has been found and replaced with
243      _END_MASTER( myThid ) in order to satisfy certain picky Sun
244      preprocessors
245    o re-arrange diagnostics pkg initialisation:
246     - allow each package to extend the available diagnostics list
247     - add some checking and fix small problems (multi-threaded, ...)
248     - new S/R diagnostics_fill (replace fill_diagnostics):
249       look through the short list of active diag. (instead of the long list)
250       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
251    
252    checkpoint57a_post
253    o this set of changes restores TAMC compatibility
254      tested for global_ocean.90x40x15 adjoint on trough
255      (what a pain)
256    
257    checkpoint57a_pre
258    o some modifs in tools/build_options for sunos
259    o call ctrl_pack for ctrl at end for optimcycle=0
260    
261    checkpoint57
262    o add horizontal bi-harmonic viscosity for vertical velocity
263      - new parameter viscA4W (defaults to viscA4)
264      - affects only non-hydrostatic code
265      - to be done: no-slip lateral boundary conditions
266    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
267    o implement Implicit Vertical advection for pTracers
268    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
269      (implemented also for implicit vertical diffusion & advection)
270    o OBCS: extend application of tracer open boundary conditions
271      to a strip beyond the boundary of width Olx/Oly
272    o add call monitor to TAF set of required calls (flow directives)
273      and include in natl_box_adjoint
274    o untangle a few ifdefs related to cost, ctrl, autodiff
275      untangel a few ALLOW_ECCO_OPTIMIZATION
276    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
277      (theta2, salt2 in ecco_cost_weights)
278    
279    checkpoint56c_post
280    o OBCS as control variables
281      - update ctrl_ad_diff.list, obcs_ad_diff.list
282      - remove balance of obcs controls from default
283      - fix index bug nobcs in ctrl_init
284      - fix dummy fields filen in ctrl_pack
285      - add dummy weights for obcs
286    o lsopt: comment out fort.94 output
287    o optim:
288      - remove unnecessary header files
289      - adjusted namelists
290      - add xerbla.F to Makefile
291    o exf:
292      - multiple modifications of exf_check_range
293      - unit change in exf_init_runoff from [m/year] to [m/s]
294    o mdsio:
295      - i/o-vector change debugLevel from debLevA to debLevB
296    
297    checkpoint56b_post
298    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
299      is called from DO_THE_MODEL_IO
300      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
301      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
302      - clean up PTRACERS_WRITE_TIMEAVE a little
303    o add another verification experiment that tests both the cfc-pkg and
304      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
305      reactive tendencies treated inline with regular timestepping
306    o testreport previously did a lousy job of comparing small numbers, so
307      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
308      implemented in the little c-progam tmp_cmpnum.c which is embedded in
309      testreport.
310    o ptracers_monitor: bug fix for MPI
311    
312    checkpoint56a_post
313    o GCHEM: finish reorganizating the package
314      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
315        (introduces another 3D-array for each passive tracer, but only if
316        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
317        gchemTendency is not needed because the timestep is done separately)
318      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
319      - GCHEM is now---more or less cleanly---separate from PTRACERS
320      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
321        so clear to me how that should be done in a general way.
322    o CFC: improve formatting of output in CFC_ATMOS
323    o PTRACERS:
324      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
325        that ALL experiments with ptracers enable can be checked. This makes
326        GCHEM_MONITOR obsolete.
327      - include a runtime parameter PTRACERS_monitorFreq that defaults to
328        monitorFreq
329      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
330    o add PTRACERS (PTR0[1-5]) to testreport output
331    o exf_check_range:
332      * default changed to .TRUE.
333      * will check values for niter0 if debLevA, every timestep if debLevB
334      * STOP in exf_check_range if 'out of range'
335      * range chosen generous to allow for potential extema
336      TBD: a version with stricter range
337           permitted range would be runtime parameters
338    o GMredi:
339      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
340      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
341      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
342    o GCHEM:
343      - move call to GCHEM_FORCING_SEP, so that it is now called before
344        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
345      - introduced a useGCHEM runtime flag and applied it everywhere.
346      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
347        this flag is now only visible within GCHEM-pkg routines.
348      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
349        be replaced by a 3D array that is computed before thermodynamics; for
350        this, the tracer ID iTracer had to be included into the parameter list
351        of ptracers_forcing
352      - set up forward_step to call gchem_forcing, that will replace
353        gchem_forcing_int in ptracers_forcing
354      - cleaning up
355    o small cleaning of exch2: remove files that are also in eesupp/src
356    
357    checkpoint56
358    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
359    o mnc: cleanup "full" files--fixes out-of-memory problem
360    o ECCO-GODAE
361      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
362      * fully merged and updated from SIO code
363        windstress sign change affects
364        - exf_inscal_[u/v]stress
365        - sign of xx_tau[u/v] adjustments
366        - signs in cost_scat
367      * ctrl_get_gen: avoid update of tau[u/v] for first few days
368      * natl_box_adjoint updated and compressed
369      * 2-level checkpoint switch added
370        (tested in EXP. 1 of natl_box_adjoint)
371      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
372    o SVD
373      * first complete, non-hacked version for SVD calculations
374      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
375        performed via direct access files admtlm_vector.it????
376        (via ctrl_[un]pack)
377      * optimcycle is used for ARPACK iteration counter
378        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
379      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
380        and add linear transforms where necessary
381      * controls are initial/final SST, SSS (can be extended; need to check
382        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
383    o mdsio: filename info to both stderr, stdout
384    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
385      from sign change
386    
387    checkpoint55j_post
388    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
389      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
390    o add consistent build directories and .cvsignore files to verification
391    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
392    o make all subroutines 30 or less characters in length for certain older
393      compilers to work (a thorough search only turns up two routines in
394      pkg/ptracers)
395    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
396      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
397    
398    checkpoint55i_post
399    o change arrays for total vertical diffusivity (2.D if explicit,
400      3.D if implicit) ; each ptracer uses its own background value.
401    o added mnc/NetCDF output capability to ocn_compon_interf
402      - added bits to verification/cpl_aim+ocn so that it can run on
403        ITRDA and other clusters without the mpirun "-wd" option
404    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
405      configuration
406    o give MNC the ability to create additional files rather than
407      exceeding a specified file size limit "MNC_MAX_FILESIZE"
408      - the default is just less than 2GB which is a practical limit
409        on many systems
410    o Compute the non-local term using either KPP vertical diffusivity (=default)
411       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
412    
413    checkpoint55h_post
414    o add verification test "vermix"
415    o remove all the *_ioinc flags and replace with the single global
416      outputTypesInclusive flag
417    o allow to set a vertical profile of vertical diffusivity for T & S
418    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
419    o useMNC moved from data.mnc to data.pkg
420    
421    checkpoint55g_post
422    o Renaming carbon AD experiments to comply with testreport conventions
423    o Updating adjoint of Held-Suarez hs94.1x64x5
424    o Fixing directives for non-ECCO forward_step, after ECCO directives
425      have been fixed to avoid recomp. of do_oceanic_phys
426      Works well for global_ocean.90x40x15,
427      but recomp. issue remains for carbon
428    o Updating adjoint output for natl_box_adjoint after
429      pkg/ecco has been modified (see taga c55d_post)
430    
431    checkpoint55f_post
432    o rename to timeave_init_fixed
433    
434    checkpoint55e_post
435    o some delicate re-shuffle of store directives to avoid one
436      extra call of do_oceanic_physics
437      affects ecco_the_main_loop.F, do_oceanic_physics.F
438      checkpoint_lev1_directives.h
439    o NB: this may break global_ocean adjoint temporarily,
440      but it is clear how to fix it. Will do later, need this now.
441    
442    checkpoint55d_post
443    o ECCO specific cost function terms (up-to-date with 1x1 runs)
444    o ecco_cost_weights is modified to 1x1 runs
445    o modifs to allow observations to be read in as
446      single file or yearly files
447    o enable to read exf forcing fields as either
448      single file or yearly files (flag useExfYearlyFields)
449    checkpoint55d_pre
450    
451    o switch between 2-level and 3-level checkpointing
452    o add ability of MNC to write local and "partial" (eg. 2D slices where
453      the full 3D field is never actually stored) arrays to NetCDF files
454      with the correct (that is, the complete multi-dimensional) set of
455      array indicies
456      - used in mom_vecinv() to write the diagFreq output
457      - tested (demonstrated) in verification/aim.5l_cs
458    o further mnc-ification
459      - add verification/lab_sea to the list with mnc setups
460      - fix undefined mnc v-names in cd_code
461      - add kpp to mnc output (both snapshot and timeave)
462    o non-hydrostatic code
463      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
464        in calc_gw.F
465      - defaults to viscAh
466      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
467        friction or Leith) in non-hydrostatic mode, as long as there is
468        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
469    o pkg/cost
470      extend simple cost functions to treat time mean quantities
471      (T,U,V) via cost_accumulate_state from cost_tile
472    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
473        be 2 times larger than the minimum size the advection scheme requires.
474        now get a perfect conservation of salt in advect_cs test-exp (updated)
475    o GGL90 (Gaspar's TKE mixed layer)
476      - add horizontal diffusion of TKE, requires exchanges in
477        do_fields_blocking_exchanges, horizontal diffusivity is zero by
478        default. In OPA there is no horizontal diffusion of TKE but the
479        mixing coefficients are computed from a horizontal average of TKE of
480        6 points or so. I think that diffusion has a little more physical
481        justification.
482      - clean up ggl90_calc in the hope of reducing memory usage (this hope
483        was in vain)
484      - mask tke-variable in ggl90_init
485    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
486    o fix biharmonic diffusion on CS-grid.
487    o more obcs stuff
488      - added obcs_external_fields_load as an alternative to the EXF-pkg option
489        for reading boundary values. This routine is called from
490        obcs_prescribe_read
491      - updated obcs_check
492      - changed sponge layer relaxation parameter units for days to seconds
493      - turned off sponge layer by default
494      - changed argument list of OBCS_CALC to myTime+deltaTclock
495      - fixed about 35 bugs in obcs_external_fields_load
496    
497    checkpoint55c_post
498    o obcs stuff
499      - new runtime flags useOBCSprescribe, useOBCSbalance
500      - re-arranged obcs_calc
501      - moved exf_getobcs to obcs_prescibe_read
502        obcs_prescibe_read is called after ORLANSKI stuff
503        and independent of it (executable can contain all).
504      - updated obcs_check
505      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
506        These may be necessary only if tangential velocities are
507        prescribed at OB, not sure, needs testing.
508    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
509      which simplifies the calls and passes the ifc check-bounds test
510    
511    checkpoint55b_post
512    o add a 2D scalar, Z location, exchange_2 routine.
513    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
514      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
515      affects advect_cs results (for the wrong reason): update output.txt
516    o use a more standard discretization for biharmonic viscosity ;
517     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
518      affects results of dome set-up: update output.txt
519    o fix gad_advection.F (CubedSphere part), back to version 1.23
520    o fix bug in mom_vi_del2uv.F (CubedSphere part).
521    
522    checkpoint55a_post
523    o merged code to
524      * prescribe/read time-dependent open boundaries
525        (works in conjunction with exf, cal)
526      * sponge layer code for open boundaries
527      * each boundary N/S/E/W now has its own CPP option
528        (healthy for the adjoint)
529    
530    checkpoint55
531    o up-to-date adjoint of previous breaks
532      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
533      - global_ocean_ebm: adjoint still needs fix (TLM ok)
534      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
535      - carbon: * remove tr1-related adjoint verification
536                * add ptracer as control variable
537    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
538      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
539    
540    checkpoint54f_post
541    o in verification/carbin/ remove experiment related to
542      ALLOW_PASSIVE_TRACER (array tr1 etc)
543      code_ad/ input_ad/ results_ad
544    
545    o add two new packages
546      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
547        + subject to optimization (memory)
548      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
549        + subject to reordering (many GOTOs in the original code)
550        + so far opps is called for every (i,j) point, and then operates in
551          the vertical; one may want to reorder the scheme in order operate in
552          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
553          fields)
554    o overhaul of IO so that we now have flags for MDSIO and/or MNC
555      - all verification tests compile and run with linux_ia32_g77
556      - defaults are compatible with current input files--nothing
557        should change if you were not previously using MNC
558      - MNC output has been added in numerous places (eg. timeave)
559        but there are still a few writes not yet do-able with MNC
560        (this is in progress)
561      - flags now allow for either/or/both use of MDSIO and MNC and
562        documentation will soon follow
563      - numerous small formatting cleanups for ProTeX
564    o add version info (via BUILD_INFO.h) to MNC and stdout
565    
566    checkpoint54e_post
567    o add two new packages
568      - pp81 (Packanowski and Philander, 1981), Richardson number and
569        stratification dependent mixing
570      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
571      - these scheme operate in a similar manner as KPP (without ghat, of
572        course), however there is only one diffusivity that is used for both
573        temperature and salinity (and passive tracers)ç
574    o add offline package
575    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
576      provided by Stephanie Dutkiewicz
577    o genmake2: add ability to search for C compilers and cleanup test output
578      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
579    
580    checkpoint54d_post
581    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
582    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
583      leading to additional shift by 5 days each year of integration
584       (i.e. leading to considerable offset over the years)
585    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
586    o start with no AB and no initial filtering (staggerTimeStep):
587      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
588    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
589      (external loading & cpl import/export stay in forward_step.F)
590    o update coupling interface to work with new staggerTimeStep
591    o change MDSIO ptracers_pickup.
592    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
593    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
594    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
595    
596    checkpoint54c_post
597    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
598      this affects (truncation error) output.txt of test-exp:
599       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
600    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
601    o change Qnet to always be the net heat flux, (+upward).
602      affects (truncation error) output of natl_box exp.: updated
603    o define the max number of passive tracers in PTRACERS_SIZE.h
604    o start to test mnc routinely in exp0
605    o add sea-ice loading (sIceLoad) as a new forcing field.
606    
607    checkpoint54b_post
608    o add testreport "-j JOBS" option for parallel builds (tested and pretty
609       impressive on Altix and Opteron systems)
610    o diagnostics can now write NetCDF files through the mnc package
611    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
612    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
613    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
614      affects (truncation error) output of lab_sea & natl_box exp.: updated
615    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
616    
617    checkpoint54a_post
618    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
619    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
620    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
621    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
622      + internal_wave (shift in writing cg2d_ini_res)
623    checkpoint54a_pre
624    
625    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
626      - modified verification/lab_sea and natl_box_adjoint accordingly
627    
628    checkpoint54
629    checkpoint53g_post
630    o prepare splitting of thermodynamics: store convect.counter in common block
631    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
632      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
633    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
634    o new parameter "nShapS": allow to treat differently S from T (nShapT)
635    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
636    o restore adjointability
637    
638    checkpoint53f_post
639    o modifications that affect AIM experiment results (update output.txt):
640      - no advection of S at top interface Nr (pkg/generic_advdiff)
641      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
642    o AIM pkg:
643      - include stability function into surf.Flux derivative relative to Tsurf
644      - calculate clear-sky radiation & surface temp. change (for diagnostics)
645    
646    checkpoint53e_post
647    o merged cylindrical coord configuration
648    o added rotating_tank experiment
649    checkpoint53e_pre
650    
651    checkpoint53d_post
652    o faulks upgraded: re-generate output.txt that have changed:
653       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
654    o Added Bryan and Lewis, 1979, vertical diffusivity profile
655    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
656    o added Sadourny discretization of Coriolis
657      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
658      - re-enabled use of omega3 (useAbsVorticity)
659    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
660      vector-invariant equations
661      - note: does *NOT* yet use same variable visc. for no-slip BC's.
662    o recoded the lateral boundary conditions for non-hydrostatic w, this time
663      hopefully without new bugs
664      - still to do: biharmonic friction for non-hydrostatic w
665    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
666    o regenerated output for global_ocean_ebm (using -ieee)
667    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
668      of mom_common/
669      - simple re-arrangement of instructions within computing loop
670    checkpoint53d_pre
671    
672    checkpoint53c_post
673    o new version of coupler for AIM+thSIce and Ocean models
674     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
675     - land: change Evaporation of snow
676     - aim with thSIce: fix bug in snow-precip.
677    o changes to calc_gw.F
678     - bug fix for w^2 term near the bottom boundary
679     - (hopefully) improve the lateral slip boundary condtions for use with
680        partial/looped cells
681      - because the bug fix changes two verification experiments anyway (exp5
682        and plume on slope), change the lateral boundary condition from half slip
683        to the value of no_slip_sides
684    o ebm package wasnt quite up to the parallel task. Fixed that.
685    o Adjoint of EBM package + verification
686      * TLM OK
687      * ADM not sufficient accuracy yet (needs further testing)
688    
689    checkpoint53b_post
690    o Commiting new energy balance model to repository
691      * package is pkg/ebm
692      * verif. is verification/global_ocean_ebm
693      * references are in ebm_driver.F
694    C      * X. Wang, P. Stone and J. Marotzke, 1999:
695    C        Global thermohaline circulation. Part I:
696    C        Sensitivity to atmospheric moisture transport.
697    C        J. Climate 12(1), 71-82
698    C      * X. Wang, P. Stone and J. Marotzke, 1999:
699    C        Global thermohaline circulation. Part II:
700    C        Sensitivity with interactive transport.
701    C        J. Climate 12(1), 83-91
702    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
703    C        Destabilization of the thermohaline circulation
704    C        by atmospheric eddy transports.
705    C        J. Climate 7(12), 1870-1882
706    o Will need long integration testing.
707    checkpoint53b_pre
708    
709    o created pkg/mom_common in preparation for variable viscosity code
710    o renamed and split ini_mnc_io
711    o pkg/land: only liquid water can diffuse or run-off
712    o AIM using land: soil wetness availability account for snow
713    o added printMapIncludesZeros to EEPARMS namelist
714    
715    checkpoint53a_post
716    o restore TAMC compatiility for exf_constants.h
717      (no usage of _d in .h)
718    o Additional storing in KPP in an attempt to fix
719      TAMC problem with adjoint of KPP code.
720      (no success...)
721      Identical code works fine with TAF.
722    o Fixed verification/natl_box_adjoint experiments.
723      Initial conditions for Experiments 4 and 5 are now
724      set to "SEAICE_initialHEFF=0", which is more reasonable,
725      and hence gives results closer to that of Experiment 2.
726      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
727    
728    checkpoint53
729    o stable checkpoint with up to date adjoint
730      TLM tests only run for 1st grdchk at the moment. Its unclear if
731      this is a code problem or a problem with resetting code for g_
732      variables that is being autogenerated wrong.
733      Otherwise:
734       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
735       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
736         are both still in chaos following their security messes.
737    
738    checkpoint52n_post
739    o various build (mostly genmake2) changes including:
740      - ability to build/run more easily within Cygwin and MacOS X
741      - more complicated Makefiles with a stronger dependence on Gnu Make
742    o pkg/seaice modifications
743      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
744        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
745        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
746      - changed proxy for geostrophic velocity and updated
747        verification/lab_sea/results/* accordingly
748      - removed ADI dynamic solver from pkg/seaice
749      - replaced all occurrences of 1/CSTICE or 1/CSUICE
750        they caused a segmentation fault under certain circumstances
751      - removed unused field WATR
752    o bug fix in exf-package:
753      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
754         now reflect that.
755    o small fixes in the cal-package:
756      - set reference date to first of January for the 'model'-calendar
757      - failing of cal_CheckDate in cal_FullDate now actually results in a
758        warning
759    o small modifications in exf-package to increase flexibility:
760      - change climtempfreeze from a constant to a runtime parameter that
761        is specified in data.exf_clim (default = -1.9)
762      - introduce runtime parameter windstressmax (default = 2.0) that is
763        specified in data.exf
764    o fix in pkg/thsice:
765      - update Evap (Tsf changes) to be consistent with Latent heat flux
766      - maintain snow precipitation unchanged (even if Tsf >=0).
767     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
768    
769    checkpoint52m_post
770    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
771      this does not change any of the results, because myIter=0 in swfrac always
772      lead to jwtype=2 (the default anyway), but the call makes little sense
773      as a default
774    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
775    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
776      atmospheric model (AIM) to use it ; add a "slab ocean" component.
777    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
778    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
779    o extending useSingleCpuIO option to work with new exch2 I/O format
780      - old-style, missing-tile I/O is still accessible by defining CPP
781        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
782    o monitor package can write to NetCDF files and/or STDOUT
783    o fix re-definition bug in MNC_GRID_INIT_ALL()
784    o doc/api_reference added
785      - a framework for building an API Reference Manual using all
786        the "protex" comments embedded in the code
787      - see pkg/generic_advdiff, pkg/mnc for examples
788    o MNC:
789      - make myThid the last argument for all subroutines
790      - new default for the grid files: NO halos
791      - add useMNC and other run-time flags
792      - separate per-file-group handling of the unlimited dimension
793      - early initialization of MNC w/ flags read at the eeboot stage
794        and lookup tables set in initialize_fixed
795      - write all MNC output to a freshly-created directory
796    o thermodynamics sea-ice (thsice) is now tested with testreport.
797    o test exp. advect_cs: use the standard cs32 grid ; update output.
798    o Added functionality to grdchk:
799      pick global i,j,k position (or nearest wet) where to perform check.
800    
801    checkpoint52l_post
802    o new land formulation:
803      a) use ground enthalpy as prognostic variable to ensure exact
804         energy conservation.
805      b) account for water temperature and for latent heat of freezing
806         in all processes (rain, run-off, ground storage)
807      c) compute surface and ground temperature implicitly.
808    o aim_v23 modification for new land model:
809      a) Treat separately land / ocean / sea-ice surface fluxes
810         to allow implicit computation of land & sea-ice surface temp.
811      b) add snow precipitation.
812    checkpoint52l_pre
813    
814    o fix problem (when 1 tile is empty) in min/max monitor.
815    o fix bug in timeAve (u,vZetatave in common block)
816    o no restoring terms under ice for pkg/seaice
817    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
818    o bug fix for pkg/seaice pickups
819    o change MNC call locations and add coordinate attributes
820    o mask vorticity at the corner ; affects global_ocean.cs output
821    o fix ini_curvilinear_grid ; test CS experiments with mpi
822    o aim.5l_cs: modify sea-ice fraction input file ; update output
823    o exf: Adding simple range check routine for exf fields after read
824    
825    checkpoint52k_post
826    o removed top-level directory "diags"
827      - we migrated these functions to pkg/timeave a long time ago
828    o fixed bug introduced in pkg/monitor
829    o accuracy ctrlprec = 32 insuffient for gradient checks using
830      averaged fields (I/O via cost_averages)
831      -> use ctrl.h in active_file*.F to control I/O precision.
832    o paramter list of CALL ADTHE_MAIN_LOOP
833    o added initial do_the_model_io to ecco
834    o set all ...Freq to zero after cost_final
835      taveFreq, dumpFreq, pChkptFreq
836    o MAIN and ECCO differentiability restored
837    
838    checkpoint52j_post
839    o fix nchklev in tamc.h for global_ocean...
840    o Bringing flow and store directives up-to-date
841    o Really weird thing!
842      call do_the_model_io from the_main_loop with parameters
843      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
844      TAF places a faulty re-call of initialise_varia
845      after cost_final call which should not be there!
846    checkpoint52j_pre
847    
848    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
849      error messages
850    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
851    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
852      debug output
853    o modfied mdsio_writefield.F to handle non-global files under exch2
854    o update AIM Cubed-Sphere exp (aim.5l_cs):
855      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
856    o update AIM Equatorial Channel exp:
857      use standard aim_v23 pkg and change the SST fields to be more realistic.
858    o globalFile now works with exch2
859    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
860      mon_vort3.F to make exch2 friendly with >1 tile per cube face
861    o limit timeave output for hi-res integrations
862    
863    checkpoint52i_post
864    o removed CPP_EEOPTIONS.h from verification/*/code
865    o updated the tiling for global_ocean_pressure
866    checkpoint52i_pre
867    
868    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
869      the old pkg/aim).
870    
871    checkpoint52h_pre
872    o shortened offending lines in exch2_send_rx?.template
873    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
874    o genmake2: add build & execute test for NetCDF code
875    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
876      old grid files, moved CPP_EEMACROS.h to pkg/exch2
877    o added useSingleCPUIO flag to monitor.F and mon_out.F
878    o added temporary hack for sea-ice dynamics on the cube:
879      metric terms are ignored and it is assumed that
880      there is no sea-ice on cube faces 1, 2, 4, and 5.
881    
882    checkpoint52f_post
883    o added exch2 cube routines to pkg/exch2
884    o modified hs94.cs-32x32x5 to use it
885    o added new grid files to hs94.cs-32x32x5
886    checkpoint52f_pre
887    
888    checkpoint52e_post
889    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
890      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
891    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
892      to work with implicit vertical advection and AB ;
893    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
894    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
895     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
896    checkpoint52e_pre
897    
898    o fix bug in impldiff when Nr=1 or Nr=2.
899    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
900    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
901    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
902      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
903    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
904    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
905    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
906    
907    checkpoint52d_post
908    o re-tiled many expts to allow comparison in multi-processor mode
909      - updated output accordingly
910      - changed hs94.128x64x5 to use intial T from file rather than use the
911        random number generator
912    o add infrastructure in model routines for fizhi and gridalt packages
913    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
914    o changes to permit hi-res, cubed-sphere, configuration
915      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
916      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
917      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
918        of surface winds for the cube
919      (A verification experiment, based on global_ocean.cs32x15, but with
920       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
921       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
922       complete with example surface forcing files and matlab scripts to look
923       at the output and compare it with that of global_ocean.cs32x15.)
924    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
925       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
926       to conform to the common rule.
927    o check-in the first version of the coupler + interfaces for multi-components
928       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
929       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
930       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
931       - ocean and atmos. share the same horizontal grid (no interpolation).
932       - exchanges between component and coupler is done in forward_step
933    o new verification experiment, cpl_aim+ocn:
934       coupled ocean - AIM atmosphere on cs32 grid.
935    
936    checkpoint52d_pre
937    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
938    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
939    
940    checkpoint52c_post
941    o Fixing OPTIONS files for use of exf:
942      - ALLOW_ECCO not needed
943      - ECCO_CPPOPTIONS.h should not be included from
944        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
945        as has been the case in the past
946      - All cal/exf related options are currently set in
947        single header file. Should remain so until we
948        agree on a consistent new policy.
949    o Removed all CPP options for cal package.
950      cal has no more CPP options.
951    o modified STOREs in GAD_ADVECTION
952    o corrected key comp. for passkey
953    
954    checkpoint52b_post
955    o new version: "thsice" of thermodynamic sea-ice pkg:
956     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
957     - modify fluxes but do not change theta directly;
958     - light cleaning of bulk_force pkg (still needed with thsice).
959     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
960       + output_thsice.txt to test thsice & bulk_force pkgs.
961    o put back grid & coriolis monitor output.
962    checkpoint52b_pre
963    
964    o call "do_the_model_io" at the beginning (=> dump initial state)
965    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
966    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
967      (need info on NUMBER_OF_PTRACERS)
968    o missing PTRACERS headers in some routines
969    o default tamc.h in pkg/autodiff supposed to crash
970      to ensure proper customization
971    
972    checkpoint52a_post
973    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
974      - moved surfaceTendencyTice from pkg/seaice to main code
975      - subroutine FREEZE_SURFACE now limits only surface temperature
976        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
977        => new output.txt for global_ocean.cs32x15 & global_with_exf
978      - keep the old version of FREEZE for backward compatibility;
979        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
980      - corresponding modifs for TAF directives
981    o added surface flux output variables to TIMEAVE_STATVARS
982    o time-averaged output for pkg/ptracers
983    o fix problem with ECCO-related divided adjoint
984      snapshot file was missing some ad-variables,
985      but no warning issued by TAF
986    
987    checkpoint52a_pre
988    o some bug fixes for #undef REAL4_IS_SLOW
989    
990    checkpoint52 = ecco_c52_e35
991    o after testing adjoints of checkpoint51u_post
992    
993    checkpoint51u_post
994    o this is the post-merge tag of the ecco-branch
995      (needs another clean checkout and re-testing)
996    o various natl_box_adjoint configs and results
997      but no input fields
998    o obcs adjoint not yet merged!
999    o adding ECCO global 1x1 and 2x2 degree configs
1000    o updated/extended some store directives for seaice
1001    o pkg/ecco now containes ecco-specific part of cost function
1002    o top level routines the_main_loop, forward_step
1003      supersede those in model/src/
1004      previous input data.cost now in data.ecco
1005      (new namelist ecco_cost_nml)
1006    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1007    
1008    checkpoint51t_post
1009    o this is the pre-merge tag of the ecco-branch
1010    
1011    checkpoint51s_post
1012    o cleanup: removed various obsolete #define-s
1013    o pkg/grdchk
1014      - renamed 'ph-grd 3' to 'grad-res'
1015      - merged from ecco-branch
1016        (remaining bug fixes for obcs gradient checks)
1017      - additional high-precision output for testreport
1018        (grep for 'precision_grdchk_result')
1019    
1020    checkpoint51r_post
1021    o cleaned up or removed CPP_OPTIONS.h files
1022    o updated results for some of the tests to reflect the new
1023      optfiles (-ieee: -O0 instead of -O3)
1024    
1025    checkpoint51q_post
1026    o cd_code:
1027      - moved cd_scheme.F -> cd_code_scheme.F
1028      - separate read_checkpoint from cd_code_ini_vars.F
1029      - separated cd_code part from write_checkpoint
1030      - updated AD_SOURCE, generated .flow
1031      - added CD_CODE_VARS.h to the_main_loop
1032      - Moving cd_code specific store dir.s to pkg/cd_code
1033    o ctrl package totally restructured
1034      - pack/unpack now optional and decoupled from
1035        xx_/adxx_ I/O
1036      - ctrl_pack/unpack cleaned
1037        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1038      - confined inclusion of AD_CONFIG.h to where necessary.
1039    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1040    
1041    checkpoint51p_post
1042    o create initial cd_code package
1043      - WARNING: the initialization of fields within packages
1044        is broken because INI_FIELDS (where READ_CHECKPOINT is
1045        called) is called *before* PACKAGES_INIT_VARIABLES.
1046        This seems to be backwards since
1047        1) its important to initially zero the entire field including
1048           the "halo" region
1049        2) zeroing needs to be done *before* reading pickup info
1050           and the pickup call might or might not happen in any
1051           particular run
1052      - this needs an overhaul for R2
1053    o cleanup verification/*/code/GMREDI_OPTIONS.h
1054    o cleanup testreport
1055    
1056    checkpoint51o_post
1057    o bringing AD-related verif's up to date with genmake2
1058      - carbon/
1059      - global_ocean.90x40x15/
1060      - hs.94.1x64x5/
1061      - (front_relax/ )
1062    o (more) consistent directory structure for AD-related verif.'s
1063    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1064    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1065    o bug fix in find_alpha.F for MDJWF:
1066      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1067        change rho -> rho-rhoConst
1068      - replace call find_rho to find_rhonum
1069    o initialisation of rFlx extended to full array (required by TAF)
1070      and shifted to thermodynamics
1071    o removed PTRACERS.h in ptracers routine
1072    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1073    o Correcting initialisations for fVerU, fVerV.
1074    o helping TAF to recognize dependency on kUp for
1075      fVerU, fVerV
1076    o Replacing delZ by delR in pkg/ctrl/
1077    checkpoint51o_pre
1078    
1079    o undid all of cp51 pending some cleanups and discussion
1080    o added the [#include "AD_CONFIG.h"] statement to all files that need
1081       it for adjoint/tl #defines
1082     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1083     o removed tools/genmake since it no longer works
1084    
1085    checkpoint51n_post
1086    o modifications to make FREEZE flux visible to pkg/kpp
1087      - moved surfaceTendencyTice from pkg/seaice to main code
1088      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1089      - subroutine FREEZE now limits only surface temperature
1090        (this means new output.txt for global_ocean.90x40x15,
1091         global_ocean.cs32x15, and global_with_exf)
1092    o added surface flux output variables to TIMEAVE_STATVARS
1093    
1094    checkpoint51n_pre
1095    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1096    o added [#include "AD_CONFIG.h"] to all files that use the following
1097      defines:
1098      - ALLOW_ADJOINT_RUN
1099      - ALLOW_TANGENTLINEAR_RUN
1100      - ALLOW_ECCO_OPTIMIZATION
1101    
1102    checkpoint51m_post
1103    o incorporating changes to get TAMC/TAF working in genmake2
1104      - added new TAMC/TAF targets to the Makefile
1105      - various cleanups related to package handling
1106      - these changes should have no impact on the forward model
1107    
1108    checkpoint51l_post
1109    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1110     - faster algorithm for cal_addtime.F
1111     - higher precision arithmetic, where needed
1112     - pkg/exf *startdate variables changed from calendar date to
1113       model integration time
1114    
1115    checkpoint51l_pre
1116    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1117    o enable to apply restoring on S & T only in a latitude band.
1118    o update output (external_forcing_surf modif. change truncation errors)
1119       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1120    
1121    checkpoint51k_post
1122    o change default to: useNHMTerms=.FALSE.
1123     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1124       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1125     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1126        exp1, ideal_2D_oce
1127     - change data file of oceanic exp (leave the results unchanged for now)
1128       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1129    o set gravitySign automatically according to the vertical coordinate used
1130      (and change sign: back to "logical" value: +1 when R increases downward)
1131    o added an include barrier to the default CPP_OPTIONS.h and
1132      removed the #include "PACKAGES_CONFIG.h" from it
1133    o fix a bug in mom_fluxform (from chk51j_post)
1134    
1135    checkpoint51j_post
1136    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1137    o adjusted some flow directives (dynamics, thermodynamics)
1138    o added cubed-sphere case to test cost function
1139    o heckpoint_lev?_directives.h now include
1140      pkg-specific directives, whenever those are enabled.
1141    o Moving pkg-specific flow directives to corresponding pkg
1142      Moving pkg-specific differentiation list to corresponding pkg
1143      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1144      ---> conventions are
1145           - pkg_ad.flow
1146           - pkg_ad_diff.list
1147           - pkg_ad_check_lev?_dir.h
1148    
1149    checkpoint51i_post
1150    o merge of the branch-genmake2
1151      - knowingly breaks the older genmake
1152      - automatic generation of all ALLOW_${PKG_NAME} defines
1153      - new testreport supersedes older testscript
1154    o large number of package inclusion and header cleanups
1155    checkpoint51i_pre
1156    
1157    o new output for adjoin of global ocean vector invariant
1158    o fix for checkpoint of thermodynamic seaice and bulk_force
1159    o Steph gchem various cleanups
1160    
1161    checkpoint 51h_pre
1162    o fixed some single quotes
1163    o modify gchem pkg to be more versatile
1164    o modifications to clean up dic pkg
1165    o add pkg/cfc
1166    
1167    checkpoint51g_post
1168    o provide links for ARPACK and ADM*TLM
1169    o start removing verification/vero/
1170    o update AD-related stuff
1171      (in particular some IF-statements in model/src/ routines)
1172    o adding to verification/global_ocean.90x40x15/ adjoint of
1173      vector invariant setup
1174    
1175    checkpoint51f_post
1176    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1177    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1178      of tracer Green's fucntions for ocean inversion project.
1179    
1180    checkpoint51f_pre
1181    o Added on-the-fly spatial interpolation capability
1182        "USE_EXF_INTERPOLATION" to pkg/exf.
1183      - This is a temporary Cartesian-grid hack until
1184        the super-duper ESMF coupler becomes available.
1185      - See verification/global_with_exf/README for usage example.
1186      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1187        flags and modified pkg/seaice accordingly.
1188    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1189        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1190        non-local transport term.
1191    
1192    checkpoint51e_post
1193    o pkg/mom_vecinv:
1194      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1195      - add time-ave diagnostic of vorticity advection.
1196    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1197    o atmospheric geopotential: - include water vapor effect;
1198                                - use p^kappa in p* scaling.
1199    o land pkg: read initial state from files.
1200    o AIM : add stratospheric drag in the upper level
1201    
1202    checkpoint51d_post
1203    o change function ILNBLNK (=> last non-blank char.) to return zero
1204      (instead of the string length) when the string. char is empty
1205    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1206    o modif's to restore TAMC compatibility
1207      - avoid "_d" constructs in PARAMETER declarations
1208      - avoid interrupting lines by comment lines
1209    o Use cluster local disks for purely local I/O
1210      vs. globally visible disks needed for ctrl stuff
1211      (merged from ecco-branch)
1212      - new active_file_loc... and mdsio_..._loc routines
1213      - affected packages: autodiff, ctrl, grdchk, mdsio
1214    
1215    checkpoint51c_post
1216    o introducing integer flag debugLevel
1217      - debLevZero: suppress all output
1218      - debLevA: standard
1219      - debLevB: equivalent to current debugMode=.TRUE.
1220    o introducing pathname variable mdsioLocalDir for mdsio
1221      that can be specified at runtime
1222      (relevant for cluster I/O to local disk)
1223    `
1224    >>>checkpoint51b_post
1225    adjoint of ptracers
1226    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1227    o extended state in checkpoint_lev?, etc.
1228    o alternative ctrl/cost with tr1 or ptracer
1229    o new comlev1_bibj_ptracers
1230    o new ptracers.flow
1231    o made ptracers_forcing same as external_forcing_s
1232    o added verification for adjoint with ptracers
1233      - adm. grdchk fail so far
1234      - tlm. grdchk OK
1235      - checked tapelev/comlev recomputations: OK
1236    <<<checkpoint51b_pre
1237    
1238    checkpoint51a_post
1239    o added code for biogeochemistry package
1240      - new pkgs: dic, gchem
1241      - new subroutine in ptracers
1242    o modify code for biogeo packages
1243      - in model/src and pkg/ptracers
1244    
1245    checkpoint51
1246    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1247      - autodiff, ctrl, exf, grdchk, seaice
1248      kept separate packages
1249      - cost, ecco, obcs
1250    o updating verification/internal_wave, verification/lab_sea
1251      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1252    
1253    checkpoint50i_post
1254    o Preparing next differentiable checkpoint and sync
1255      of MAIN vs. ecco-branch
1256      - 1st step: this one is differentiable
1257      - 2nd step: next(! not this) checkpoint will have updated packages
1258                  from ecco-branch)
1259    
1260    checkpoint50h_post
1261    o new package "land": provide surface BC for AIM.
1262    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1263    o AIM: use true log-P extrapolation for near surface temp (= as in
1264        F.Molteni paper) ; update aim.5l_cs output.
1265    o New variable in PARM03 for more flexible pickups
1266    o somewhat cleaned package initialisation sequence for
1267      ctrl/ cost/ ecco/ in packages_... routines
1268    
1269    checkpoint50g_post
1270    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1271      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1272      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1273        made the default because of faster convergence than ADI
1274    
1275    checkpoint50f_post
1276    o exf totally restructured
1277      - replaced all exf_set_ routines by one generic exf_set_gen.F
1278        and made sure it's still differentiable
1279      - split exf_getffields.F into new exf_bulkformulae.F
1280      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1281      - updated adjoint/makefile and relevant verif. accordingly
1282    
1283    checkpoint50f_pre
1284     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1285          + change Evap over land. (update aim.5l_cs output)
1286     o added missing .cvsignores and made uniform across expts
1287     o changed configuration of tidal_basin_2d expt
1288     o added pkg/debug functions for tracing code in fatal crashes
1289     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1290     o new fn in pkg/monitor to stop model if solution grows too big
1291     o removed lots of single quotes from comments
1292    
1293    checkpoint50e_post
1294    o make KPP work with PTRACERS
1295     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1296       nearly a copy of kpp_transport_s
1297     - there is no analogue to SurfaceTendencyS, so I have to use
1298       gPtr(of the surface layer) instead
1299    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1300    checkpoint50e_pre
1301    
1302    checkpoint50d_post
1303    o change kpp output from multiple-record state files to single-record state
1304      files analogous to write_state.F
1305    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1306      analogous to the cg2d-related output.
1307    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1308      so that writing to internal file fn (with length 512) fails.
1309    checkpoint50d_pre
1310    
1311    checkpoint50c_post
1312    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1313    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1314    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1315    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1316    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1317    
1318    checkpoint50c_pre
1319    Merging from release1_p13:
1320    o bug fix for pkg/seaice dynamic solver
1321    o Added SEAICE_initialHEFF to pkg/seaice
1322    
1323    checkpoint50b_post
1324    o store u*,v* in gU,V instead of in guNm1,gvNm1
1325    o in order to put the momForcing out of the Adams-Bashforth:
1326      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1327      to timestep.F
1328    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1329    o re-generate output for highly sensitive test-exp:
1330       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1331    
1332    checkpoint50b_pre
1333    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1334    o corrected CPP option mismatch in exf_Bulk... functions for case
1335      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1336    
1337    checkpoint50a_post
1338    o Bug fix for merging between c50 and KPP.
1339      ikey was passed from thermodynamics to kpp_calc via
1340      common block rather than being recomputed in kpp_calc,
1341      in contradiction with new key itdkey.
1342      New key ikppkey created, and tamc.h headers updated.
1343    
1344    checkpoint50
1345    - 2nd step of merge with ecco-branch:
1346      merge changes in ecco-branch back into main trunk
1347    - bug fix in find_alpha
1348    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1349    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1350    - merged some sliced AD support routines
1351    
1352    checkpoint49
1353    merged from ecco-branch:
1354    o exf:
1355      - Enable initialisation of forcing fields to constant
1356        (runtime) values.
1357      - in exf_getffields.F
1358        Reduce i-/j-loop to interior domain, discarding overlaps.
1359        That also fixes wrong TAF-key computations for key_1, key_2
1360        with bulf formulae.
1361      - exf_init.F modify #ifdef for exf_init_evap
1362      - exf_getffieldrec.F, ctrl_getrec.F
1363        The following INT-usages are not safe:
1364          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1365          fldcount = int(fldsecs/fldperiod) + 1
1366        and were modified.
1367    o autodiff: checkpoint_lev...
1368      - updated storing for bulk formulae (some arrays were missing)
1369      - added state for seaice package
1370      - synchronized with main branch
1371    o DIVA:
1372      Modif.s in
1373      - the_main_loop.F
1374      - the_model_main.F
1375      and added cost_final_restore.F cost_final_store.F
1376      o With these changes, it is possible to fully separate
1377        the first forward run to compute the cost function (mdthe_main_loop)
1378        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1379        into separate model executions.
1380        This enables better tuning of DIVA to given queue sizes.
1381      o Loss of cost function value in consecutive DIVA runs is
1382        fixed by storing to 'costfinal' file.
1383      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1384        beginning/end of adjoint integration is accounted for.
1385      The current changes apply to TAF-1.4.26.
1386      TAF has one remaining bug, requiring one manual change
1387      (see MITgcm manual).
1388    o cal: synchronized between MAIN and ecco-branch
1389    
1390    checkpoint48i_post
1391    o Changes to restore differentiability of code w.r.t. previous tag
1392      (mostly adding new routines to make list and replacing
1393      pressure by totPhiHyd).
1394    o Updated and merged grdchk package
1395      - has both ADM and TLM checks
1396      - works for single- and multi-proc.
1397      - output cleaned
1398      - worked successfully for parallel DIVA
1399    o genmake:
1400      - Adding -platform=SP4
1401      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1402    o Modif. for DIVA:
1403      ctrl_unpack should not be called in intermediate DIVA interval.
1404      (similar thing would apply for active files such as
1405      tbar, sbar, psbar, which should not be reinitialised;
1406      only relevant for ecco-branch)
1407    
1408    checkpoint48h_post
1409    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1410    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1411    o Added SEAICE_initialHEFF to pkg/seaice
1412    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1413    
1414    checkpoint48g_post
1415    --- EOS:
1416    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1417      store total Potential in totPhyHyd for diagnostics & EOS.
1418    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1419    --- Pressure/geopotential gradient:
1420    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1421    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1422      ( changes results of global_ocean_pressure )
1423    o NLFS + z-coord.: add eta*Rho' contribution.
1424    o accurate phiHyd when using interface-W at the middle between 2 centers
1425     ( changes results of ideal_2D_oce )
1426    o includes r* 2nd term in potential gradient.
1427    
1428    checkpoint48f_post
1429    Merging from release1_p12:
1430    o Modifications for using pkg/exf with pkg/seaice
1431      - improved description of the various forcing configurations
1432      - added basic radiation bulk formulae to pkg/exf
1433      - units/sign fix for evap computation in exf_getffields.F
1434      - updated verification/global_with_exf/results/output.txt
1435    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1436      (SBO) core products, including oceanic mass, center-of-mass,
1437      angular, and bottom pressure (see pkg/sbo/README.sbo).
1438    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1439      to avoid negative values in shallow regions.
1440      - updated verification/natl_box/results/output.txt
1441      - updated verification/lab_sea/results/output.txt
1442    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1443    o Added useSingleCpuIO option (see PARAMS.h).
1444    o Updated useSingleCpuIO option in mdsio_writefield.F to
1445      work with multi-field files, e.g., for single-file pickup.
1446    o pkg/seaice:
1447      - bug fix in growth.F: QNET for no shortwave case
1448      - added HeffFile for specifying initial sea-ice thickness
1449      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1450    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1451      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1452    o pkg/seaice:
1453      - adjoint-friendly modifications
1454      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1455    
1456    checkpoint48e_post
1457    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1458    o dynamics: change definition of computational domain & adapt mom_fluxform
1459      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1460    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1461        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1462        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1463        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1464        inverted_barometer solid-body.cs-32x32x1
1465      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1466    
1467    checkpoint48d_post
1468    o in preparation for r*:
1469     a) use pre-computed gradient of hydrostatic potential:
1470        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1471     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1472        => affects results of glob_oce_pressure (different truncation error)  
1473      update output.txt of ideal_2D_oce & global_ocean_pressure
1474    
1475    checkpoint48d_pre
1476    o in preparation for r*:
1477      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1478      pass the 2 comp. of the grad. as arguments to momentum S/R.
1479      but for the moment, only used if it does not change the results.
1480    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1481    
1482    checkpoint48c_post
1483    Modifications in treatment of initial flux forcing controls
1484    to avoid extra storing of flux fields.
1485    
1486    checkpoint48c_pre
1487    o Added tidal_basin_2d experiment (currently 1D!)
1488    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1489    
1490    checkpoint48b_post
1491    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1492     (modification to pressure gradient not yet implemented)
1493    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1494      (for U & V) that are used for vertical advection of momentum.
1495    
1496    checkpoint48a_post
1497    o In preparation for r*, use temp. array to compute vertical transport
1498       in flux-form momentum pkg. => change results of few test-exp.
1499      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1500                        lab_sea, natl_box & plume_on_slope
1501    
1502    checkpoint48
1503    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1504    
1505    checkpoint47j_post
1506    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1507    o moved adexch from forward_step to addummy_in_stepping
1508    o added exch in ctrl_map_...
1509    o aveFreq.=0. at end of cost_final to avoid overwrite in
1510      reverse checkpointing loop
1511    o Yet more changes in gmredi:
1512      * adgmredi_calc_tensor
1513        avoiding all recomputation of gmredi_slope_limit
1514      * adgmredi_x/y/rtransport
1515        added flag for excessive storing to avoid recomp. of
1516        u/v/rtans, dTdx/y/z
1517        -> this is not really necessary and very memory-consuming
1518      * adgmredi_slope_psi:
1519        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1520      * gmredi_slope_limit
1521        re-activated full calculation of taperfct for case 'ac02'
1522    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1523    
1524    checkpoint47i_post
1525    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1526    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1527      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1528    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1529    o gmredi: fix few bugs.
1530    
1531    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1532    This will be a good checkpoint to plug into the ecco-branch.
1533    o few modif.'s to get latest version adjointed
1534      (mainly kick out code in ini_linear_phisurf)
1535    o modif's to run adjoint with exactConserv
1536    o case GM_BOLUS_ADVEC should be cleaned
1537      S/R gmredi_slope_psi should be cleaned
1538    o verification/carbon now has exactConserv=.TRUE.
1539    
1540    checkpoint47g_post
1541    o time-average AIM output: becomes independent from statvars time-average
1542      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1543    o After TAF bug fix:
1544      Tested adjoint of gmredi package.
1545      Tests were done with checkpoint47 rather than with latest
1546      checkpoint47f_post since the latter is broken for the adjoint
1547      verification/carbon/ contains both ADM and TLM gradient checks.
1548    Here they are, before they get changed/lost/stolen.
1549    Mostly modif.'s to fix numerical sensitivities.
1550    Gradient checks OK for
1551    - GM_taper_scheme:
1552      * clipping
1553      * ac02
1554      * linear
1555      * glw91
1556      * dm95
1557      * ldd97
1558    - GMREDI_OPTIONS:
1559      * GM_VISBECK_VARIABLE_K
1560      * GM_NON_UNITY_DIAGONAL
1561      * GM_EXTRA_DIAGONAL
1562      * GM_BOLUS_ADVEC
1563    in conjunction with data.gmredi parameters to be checked in
1564    in a few minutes under verification/carbon/code/
1565    
1566    checkpoint47f_post
1567    Merging from release1_p10:
1568    o modifications for using pkg/exf with pkg/seaice
1569      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1570        and SEAICE_EXTERNAL_FLUXES
1571      - pkg/exf CPP options EXF_READ_EVAP and
1572        EXF_NO_BULK_COMPUTATIONS
1573      - usage examples are Experiments 8 and 9 in
1574        verification/lab_sea/README
1575      - verification/lab_sea default experiment now uses
1576        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1577    
1578    checkpoint47e_post
1579    o created a tag prior to creating a branch
1580    
1581    checkpoint47d_post
1582    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1583      at the bottom boundary had an erroneous half slip boundary condition
1584    o added bottom drag and no slip boundary condition capabilities to
1585      oceanic pressure coordinates code
1586    o added new verification experiment global_ocean_pressure, this experiment is
1587      also described in the tutorial section of the manual
1588    checkpoint47d_pre
1589    
1590    checkpoint47c_post
1591    o Added a verification experiment for a global cubed-sphere ocean run
1592      -  verification/global_ocean.cubed32x32x30
1593      -  uses pkg/therm_seaice and pkg/bulk_forcing
1594    
1595    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1596    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1597      when using P-coordinate; only implemented for atmospheric config.
1598    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1599      NOTES: requires option NONLIN_FRSURF to be "#define".
1600    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1601    
1602    checkpoint47b_post
1603    Merging from release1_p9:
1604    o pkg/seaice
1605      - removed GOTO's and added taf directives
1606      - double precision constants to reduce the g77 (Linux)
1607        to F77 (SGI) differences reported in release1_p8
1608    o tools/genmake
1609      - added SGI options
1610    o verification/testscript
1611      - updated to that of checkpoint47a_post
1612    o verification/global_ocean.90x40x15/input/eedata
1613      - modified for SGI f77 compatibility
1614    o verification/lab_sea
1615      - added description of sea-ice model
1616      - added missing matlab routines
1617      - added test of thermodynamics parallelization
1618    
1619    checkpoint47a_post
1620    o new pkg: aim_v23
1621     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1622       for now, keep the same surface forcing as before.
1623     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1624     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1625     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1626    o add diagnostic of surface correction term in monitor output
1627    
1628    o bulk_force and therm_seaice
1629    - Two packages:  bulk_force (Bulk forcing)
1630      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1631    - Earlier integration from Stephaine Dutkiewicz
1632      and Patrick Heimbach.
1633    - Two ifdef statements for compile time,
1634       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1635    
1636    checkpoint47
1637    differentiable version of checkpoint46n_post
1638    o bug fix in quasihydrostaticterms
1639    o * "clean" adjoint code (in terms of extensive recomputations)
1640        can now be obtained for all GMREDI options (i.e. for
1641        - GM_VISBECK_VARIABLE_K
1642        - GM_NON_UNITY_DIAGONAL
1643        - GM_EXTRA_DIAGONAL
1644        - GM_BOLUS_ADVEC )
1645      * However, wrong gradient check problem remains unsolved.
1646      * New CPP options have been introduced for different
1647        tapering schemes
1648    o external_fields_load now part of differentiation list
1649    o pressure needs multiple storing;
1650      would be nice to have store_pressure at beginning or
1651      end of forward_step, e.g. by having phiHyd global (5-dim.)
1652      (NB: pressure is needed for certain cases in find_rho,
1653      which is also invoked through convective_adjustment).
1654    o recomputations in find_rho for cases
1655     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1656    o #define ATMOSPHERIC_LOADING should be differentiable
1657    o ini_forcing shifted to begining of initialise_varia
1658    o Incorporating QNVS line search routines into MITgcm
1659      (this is separate code, and therefore not under pkg)
1660      lsopt/, optim/
1661    o Updated verification/carbon/
1662      - #define GM_VISBECK_VARIABLE_K
1663      - GM_taper_scheme    = 'ldd97'    
1664    
1665    checkpoint46n_post
1666    Merging from release1_p8:
1667    o verification/natl_box:
1668      updating new external_fields_load routine
1669    o New package: pkg/seaice
1670      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1671      The sea-ice code is based on Hibler (1979-1980).
1672      Two sea-ice dynamic solvers, ADI and LSR, are included.
1673      In addition to computing prognostic sea-ice variables and diagnosing
1674      the forcing/external data fields that drive the ocean model,
1675      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1676      The implied surface heat flux is then stored in variable
1677      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1678      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1679      non-local transport term.  Because this call precedes model
1680      thermodynamics, temperature under sea-ice may not be "exactly" at
1681      the freezing point by the time theta is dumped or time-averaged.
1682      N.B.: fairly large differences in accuracy occur across
1683            different platforms/compilers; comparison between
1684            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1685            generated output gives:
1686       T           S           U           V
1687      C D M    c        m  s        m  s        m  s        m  s
1688      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1689      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1690      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1691    
1692      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1693    o GAD:
1694      - generated new common blocks to account for call of
1695        same gad routines with differing traceridentities
1696        (needed to modify tracerIdentity indices in GAD.h)
1697      - generated separate common blocks for case useCubedSphereExchange
1698        (Department of Futurology)
1699      - parameter lists to gmredi_?transport: added tracerIdentity
1700      - added new key indices to tamc.h
1701    o external_fields_load:
1702      - added this routine to TAF list
1703      - needed to make some common blocks global and additional storing
1704        along the same lines as exf package (checkpoint_lev?_directives.h)
1705    o exf:
1706      updated external forcing package
1707      - bug fixes carried over from ecco-branch
1708        (missing OBCS_OPTIONS.h in two routines)
1709      - enable easy to use "no forcing".
1710      - added exf I/O for atmospheric loading
1711      - added exf I/O for runoff data
1712      - transfered scaling between exf <-> MITgcm to exf namelist
1713    o Adding new verification experiment global_with_exf.
1714      This verification experiment is almost identical to the
1715      global_ocean.90x40x15 experiment, except that it uses
1716      the exf (and cal) package instead of the
1717      external_fields_load routine (cf README file).
1718    
1719    checkpoint46m_post
1720    o modified testscript to return -- when there are no lines of "%MON" output
1721    o added new flag "quasiHydrostatic" for QH mode
1722      and new routine quasihydrostaticterms()
1723    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1724      New routine: mom_u_coriolis_nh()
1725    o fixed sign of non-hydrostatic metric terms in u and v equations.
1726      Depend on correct sign of gravitySign.
1727    o added work.pc* to .cvsignore in aim directories using ifc
1728    o introduced flag for controllin non-hydrostatic metric terms
1729    o removed gravitySign from PARM04
1730    o switched to g77/ifc from pgf77 in aim experiments
1731    
1732    checkpoint46l_post
1733    o made convective adjustment work with pressure coordinates:
1734     - changed the direction of k-loop in convective_adjustment.F for the
1735       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1736     - adjusted the reference pressure k-index in convective_adjustment.F
1737     - adjusted the convection condition in convect.F (in analogy to
1738       calc_ivdc.F)
1739     - convective_adjustment no longer computes anything on the halos
1740     - removed the warnings about negative salinity from find_rho.F and
1741       find_alpha.F; instead the new routine look_for_neg_salinity, called
1742       at the beginning of find_rho, find_alpha, and find_beta, does a
1743       check of the entire slice, if CPP-option
1744       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1745    checkpoint46l_pre
1746    
1747    checkpoint46k_post
1748    o fixed the verification/global_ocean.90x40x15 experiment:
1749     - new bathymetry (the world according to A., JMC, and M.)
1750     - new initial fields and forcing fields (*.bin files)
1751     - new POLY3.COEFFS (for the next release one should switch to a full
1752       equation of state: JMD95P or MDJWF)
1753     - fixed several errors and redundancies in the data file
1754     - experiment uses looped cells
1755     - added matlab directory with diagnostic scripts for plotting of output
1756    
1757    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1758     - read AIM physics parameters from a file (data.aimphys)
1759     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1760    
1761    checkpoint46j_post
1762    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1763    o move wVel computation at the end of the time step, in S/R integr_continuity
1764    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1765    o update timeave pkg for wVel diagnostic.
1766    checkpoint46j_pre
1767    
1768    checkpoint46i_post
1769    o Clean up AIM package (and keep the results unchanged):
1770      include CPP_OPTION and use IMPLICT NONE in all routines ;
1771      declare all the variables _RL ; use _d 0 for all numerical constants.
1772      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1773    
1774    checkpoint46h_post
1775    o cleaned up the use of rhoNil and rhoConst.
1776      - rhoNil should only appear in the LINEAR equation of state, everywhere
1777        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1778        and the dynamical equations are all divided by rhoConst
1779    o introduced new parameter rhoConstFresh, a reference density of fresh
1780      water, to remove the fresh water flux's dependence on rhoNil. The default
1781      value is 999.8 kg/m^3
1782    o cleanup up external_forcing.F and external_forcing_surf.F
1783      - can now be used by both OCEANIC and OCEANICP
1784    checkpoint46h_pre
1785    
1786     Added code to convert surface volume flux (fresh water) into
1787     a mass flux when using P coordinates in the ocean (OCEANICP).
1788     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1789    
1790    checkpoint46g_post
1791    o Include a new diagnostic variable phiHydLow for the ocean model
1792      - in z-coordinates, it is the bottom pressure anomaly
1793      - in p-coordinates, it is the sea surface elevation
1794      - in both cases, these variable have global drift, reflecting the mass
1795        drift in z-coordinates and the volume drift in p-coordinates
1796      - included time averaging for phiHydLow, be aware of the drift!
1797    o depth-dependent computation of Bo_surf for pressure coordinates
1798      in the ocean (buoyancyRelation='OCEANICP')
1799      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1800        Theta, Salinity, and Pressure in the parameter list. This routine is
1801        presently contained in find_rho.F. This routine does not give the
1802        correct density for 'POLY3', which would be a z-dependent reference
1803        density.
1804    o cleaned up find_rho
1805      - removed obsolete 'eqn' from the parameter list.
1806    o added two new verification experiments: gop and goz
1807      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1808    checkpoint46g_pre
1809    
1810    checkpoint46f_post
1811    o Enable tangent linear (forward mode) gradient checks:
1812      - extended active file handling to g_... files
1813      - added TANGENT_SIMULATION to theSimulationMode
1814      - extended grdchk package accordingly
1815    o added tangent linear setup in verification/carbon/code_ftl
1816    o added adjoint setup in verification/front_relax/code_ad
1817    
1818    checkpoint46e_post
1819    o Added new equation of state -> MDJWF
1820      - EOS of McDougall et al., 2002, JAOT, submitted
1821      - caveat: the equation of state is only valid for a smaller (more
1822        realistic?) range of values than JMD95P/Z and UNESCO
1823      - added masks to the calculation of pressure in store_pressure
1824      - added more check values for density in check_eos (ini_eos.F), some of
1825        the old check values are out of the range of the MDJWF-eos, so don't
1826        expect perfect matches for those
1827    checkpoint46e_pre
1828    
1829    checkpoint46d_post
1830    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1831      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1832      case of pressure coordinates. eosType='JMD95Z' in
1833      combination with buoyancyRelation='OCEANICP' now causes an error.
1834    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1835      in find_alpha/beta.
1836    checkpoint46d_pre
1837    
1838    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1839      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1840    
1841    checkpoint46c_post
1842    o Changes necessary for ocean in p-coordinates
1843     -  Added new buoyancy relation = 'OCEANICP'
1844     -  Added new parameters = gravitySign (this used to be contained inside
1845        the factor dRdZ which I added when we first switched to R coordinates).
1846     X GM/Redi is not compatible (yet)
1847     X bottom drag and no-slip need to be debugged.
1848    checkpoint46c_pre
1849    
1850    checkpoint46b_post
1851    o Added new equation of state -> JMD95Z and JMD95P
1852      - EOS of Jackett and McDougall, 1995, JAOT
1853      - moved all EOS parameters into EOS.h
1854      - new routines ini_eos.F, store_pressure.F
1855    o Added UNESCO EOS, but not recommended because it requires
1856      in-situ temperature (see JMD95)
1857    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1858      unesco.f to be used with POLY3
1859    checkpoint46b_pre
1860    
1861    checkpoint46a_post
1862    o Added (atmospheric) pressure loading
1863      - new field in FFIELDS.h, etc...
1864      - new cpp flag ATMOSPHERIC_LOADING
1865    o Changed hFacC to _hFacC in calc_phi_hyd.F
1866    o Added SHORTWAVE_HEATING to some files for consistency
1867    checkpoint46a_pre
1868    
1869    checkpoint46
1870    further merges from release1_p5
1871    o new ctrl package
1872      - adopted from ECCO environment to enable optimization
1873      - added Eliassen Palm fluxes to controls
1874    o added Eliassen Palm flux controls to gradient check package
1875    o cost package
1876      - Compatible with new ctrl package
1877      - added Eliassen Palm cost hooks
1878      - modif's of existing cost functions
1879    o Adjoint-related bug fixes in kpp:
1880      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1881      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1882    o autodiff package
1883      - flow directives:
1884        + new for S/R do_the_model_io
1885        + enhanced for S/R checkpoint
1886        + new gmredi.flow
1887      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1888        disable adcommon.h/g_common.h by default.
1889      - fixed problem for adjoint of global_max
1890    o modified verification/carbon/
1891    o New setup for adjoint of global_ocean
1892    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1893    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1894    o incorporated hooks for sponge layer code (external_forcing.F)
1895    
1896    checkpoint45d_post
1897    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1898    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1899      (affects plume_on_slope "cg2d" output)
1900    o add new parameter deltaTfreesurf for free-surface time stepping
1901    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1902    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1903    o change phiMin in exp1 (to agree with documentation)
1904    o add new flags:
1905     - T,S forcing inside/outside Adams-Bashforth
1906     - turn off temp,salt advection and/or forcing
1907     - for each tracer, define internal flag for multiDimAdvection & A-B
1908    o monitor: change definition of KE to check conservation of Energy
1909    
1910    checkpoint45c_post
1911    o Removed f90 comments ("!")
1912    o Modified initialisations to enable exf package for MITgcm
1913      (without invoking ECCO_PACKAGE).
1914    o modifications to gradient check package (Martin Losch)
1915      - enable centered differences
1916      - modified format of standard output
1917    
1918    checkpoint45b_post
1919    o cleaned exchange calls in cg2d
1920    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1921    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1922      to configure barotropic setup (Martin Losch)
1923    o moved some initialisations within bi,bj loop in dynamics
1924      (TAF flow dependency)
1925    o in initialise_varia, moved call packages_init_variables
1926      before convective_adjustment_init
1927      (corresponding adjustment of TAF tape initialisation).
1928    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1929    
1930    checkpoint45a_post
1931    o compute Rho over the whole domain (extend iMin,jMin indices)
1932    o specific exchange for X-slice domain (case Ny=1)
1933    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1934    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1935    
1936    checkpoint44h_post = checkpoint45
1937    o Fix to restore differentiability:
1938      place at which packages_init_variables is called in
1939      initialise_varia is crucial for reverse control flow.
1940    o modifications in GMRedi to enable stable adjoint
1941      (corresponding modif's in thermodynamics, dynamics)
1942    o added missing hook for sponge layer code in external_forcing
1943    o modified test cost functions
1944    o storing in gad_advection (plus removal of write(0,*)!
1945    o missing headers TR1.h added in convective_adjustment routines
1946    o errorMessageUnit set non-equal zero in eeboot
1947      (conflict on some platforms, e.g. IBM SP3)
1948    o modified carbon verif.
1949    
1950    checkpoint44h_pre
1951    o vertical grid option: allow to put the Interface at the middle between
1952      2 cell-centers ; replace delZ in pkg/kpp by drF.
1953    o GM Advective form: Tracers are advected using the residual transport (=
1954      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1955    
1956    checkpoint44g_post
1957    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1958      results) ; ifdef missing in thermodynamics.F
1959    
1960    checkpoint44f_pre,checkpoint44f_post
1961    o added PTRACERS package
1962      This allows an arbitrary number of passive tracers to be integrated
1963      forward simultaneously with the dynamicaly model.
1964      + Implemented so far:
1965        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1966        - I/O and checkpointing
1967        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1968      + Not implemented so far:
1969        - KPP
1970        - OBCS
1971      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1972        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1973        line in data.pkg.
1974      + This package is disabled by default since it increases storage.
1975    
1976    
1977    o testscript: added -cleanup option
1978    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1979                 b) enable to filter 2D fields.
1980    
1981    checkpoint44e_pre,post
1982    o re-wrote convective adjustment to use pre-calculated weights
1983      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1984      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1985      Original calls to convect() still in place.
1986    
1987    chkpt44d_pre,post
1988    o added missing EXCLUDE_MONITOR flags
1989    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1990      (incompatible typ in MIN/MAX expressions caused problems
1991      on IBM SP3)
1992    o in genmake added variable MAKEDEPEND
1993      plus resetting for case SunOS
1994    o added timer_stats.c routine for IBM SP3
1995    o removed variables in dynamics
1996    !!! I forgot to create tag chkpt44d_pre !!!
1997    !!! But chkpt44d_pre = chkpt44c_post    !!!
1998    
1999    o real fresh water flux implemented with non-linear free-surface.
2000    
2001    chkpt44c_pre,post
2002    o few fix (mask in shap_s2, EmPmR in external_field_load,
2003      USE_NATURAL_BCS in solve_for_P);
2004    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2005    
2006    checkpoint44b_pre/_post
2007    o merge of relevant stuff from the ecco-branch:
2008      - genmake: removed $S64 overwrite for case SunOS
2009      - pkg/exf: update and corrections for field swapping and obcs
2010      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2011                  harmonized between ECCO and MITgcm
2012      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2013                      updated checkpointing_lev... lists for obcs
2014      - model/src: minor changes in forward_step, plot_field
2015                   added directive for divided adjoint in the_main_loop
2016      - pkg/mdsio: added mdsio_gl_slice
2017    
2018    o check parameters & config (chkpt44a_pre,post)
2019    o OBC and NonLin_FrSurf.
2020    
2021    checkpoint44
2022    o fix bug in mom_vi_del2uv
2023    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2024    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2025    o update AIM experiments (NCEP input files)
2026    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2027    o added some stuff for AD
2028    
2029    checkpoint43
2030    o added two new advection tests
2031    o added global 4x4 degree ocean test
2032    o added test of H&S94 with free surface on cube
2033    o some final mods for gradient check, adjoint,...
2034    
2035    checkpoint42
2036      Fixed AD-related problems:
2037    o Store directives up-to-date with re-arranged Adams-Bashforth
2038      (mainly thermodynamics.F)
2039    o New store directives for multi-dim. advection schemes
2040      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2041      * new common block and key passkey
2042      (mainly gad_advection.F)
2043    o Modified store directives for split of dynamics/thermodynamics
2044      for the case ALLOW_KPP
2045    o Cleaned argument list for timestep_tracer.F
2046    
2047    checkpoint41
2048    o re-formatted/added comments in prologues of key subroutines
2049      to work with protex
2050    
2051    checkpoint40
2052    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2053    o added FLT (floats) package from Arne along with demo. experiment
2054    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2055      implementation of forward-in-time forcing terms
2056    o more mods for non-linear free-surface including new variable
2057    o modified multi-dim method to work on cube
2058    o bug fix in KPP (from DM)
2059    
2060    checkpoint40pre9
2061    o added DST advection schemes
2062    o fix MPI bug on SGI's
2063    o modifications for non-linear free-surface
2064    o fixed conditionals for fixed flow/passive tracer only mode
2065    o added tension/strain form of stress tensor
2066    o changes to commenting of arguments for TAF/TAMC
2067    o added/updated many matlab scripts
2068    o added multi-dimensional advection method for tracers
2069      
2070    checkpoint40pre8
2071    o new package rw/
2072      Added method for dumping intermediate local arrays:
2073      mdsio_writetile - same as mdsio_writefield except works from inside
2074                        bi,bj loop
2075      mdsio_writelocal - same as mdsio_writetile except works for local
2076                         arrays
2077      write_local_r? - higher-level wrapper for mdsio_writelocal
2078      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2079      Example given at end of mom_vecinv.F that dumps some local arrays.
2080    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2081      control flux-form versus vector invariant code.
2082      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2083      or genmake -DISABLE ...
2084    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2085      (additional storing is now needed for case vecinv;
2086      currently nothing implemented to switch this storing off
2087      in case fluxform is used since no CPP flag available).
2088    
2089    checkpoint40pre7
2090    o bug fix in dynamics.F
2091      calc_viscosity called before k=1,Nr loop.
2092    o added some #ifdef's ALLOW_PASSIVE_TRACER
2093    o cleaned initialisations in ctrl_map_ini
2094      related to TAF
2095    
2096    checkpoint40pre6
2097    o split dynamics into thermodynamics & dynamics
2098    o corresponding split of calc_diffusivity into
2099      calc_diffusivity, calc_viscosity
2100      (kpp_calc_diff, kpp_calc_visc).
2101    o Added diffkr, kapgm to control variables
2102    o bug fix in gmredi_slope_limit for ldd97
2103    
2104    checkpoint40pre5
2105    o proper initialization of Adams-Bashforth time stepping
2106      + uses forward step for very first step of model (iter=0)
2107    o re-generated *all* output since almost all output is modified by this
2108      change (sorry but we've been putting this one off for about 2 years)
2109      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2110        *not* regenerated since they are already out of date and I don't
2111        want to create the impression that they are suddenly working.
2112    o removed KAP stuff for DEC's
2113    o modified/added many .cvsignore files in */code and */input
2114    o added new expt "solid-body.cs-32x32x1"
2115      + this uses an alternative form of ini_curvilinear_grid.F which
2116        is not necessarily any better than the current one...
2117    
2118    checkpoint40pre4
2119    o added re-initialisations of utrans,vtrans,rtrans in
2120      calc_common_factors which are crucial for TAF.
2121    o extended iMin,jMin range for calc_common_factors,
2122      calc_diffusivity
2123    o added option ALLOW_PASSIVE_TRACER
2124    o a few minor updates and fixes
2125    
2126    checkpoint40pre3
2127    o created calc_gtr1.F for gad package
2128    o split the_main_loop and re-introduced forward_step
2129    o some recomputations of nIter0 for TAMC
2130    
2131    checkpoint40pre2
2132    o Updated to latest branch of AJA, JMC
2133    o Added gradient check package
2134    o Added routines for passive tracer handling
2135    o Added carbon sequestration sensitivity experiment
2136    
2137    checkpoint39
2138     o Modifications and fixes to support TAMC
2139       (mainly missing or wrong directives)
2140     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2141       in addummy_in_stepping
2142     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2143     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2144     o Included following packages:
2145       cal: calendar
2146       exf: external forcing
2147       ecco: essential routines to control use of cal, exf
2148             (NB: this is not the full ECCO environment)
2149     o disabled some packages by default in genmake
2150    
2151    checkpoint38
2152     o see notes_c37_adj.txt
2153     o corrected wrong layer index in external_forcing_t
2154     o replaced the_main_loop/forward_step by the_main_loop
2155     o removed forceoutput from write_state
2156       (replaced criteria for initial/final state)
2157     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2158    
2159    checkpoint37
2160     o mdsio.F routine split and packaged in pkg/mdsio
2161       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2162        used unless genmake -disable=mdsio)
2163     o allow a more precise surface-geopotential gradient for the atmosphere
2164       taking into account the change in space of Alpha (=1/rho) at the surface.
2165     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2166       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2167     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2168       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2169       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2170     o Time-Average diagnostics defined as a pseudo package "timeave".
2171     o pickup files : old pickup (before c35) did not work with new code (c35
2172       and after) unless activating 2 commented lines in initialise-varia.
2173     o Non-Hydrostatic pickup file Pb fixed.
2174     o bug with Rigid-lid version (since c35) fixed.  
2175    
2176    checkpoint36
2177     o implement Crank-Nickelson barotropic time-stepping
2178     o recover Time-Average diagnostics
2179     o fix Pb in checkpoint (PR#19)
2180     o AIM become a standard package ; clean unused CPP_kees
2181    
2182    checkpoint35
2183     o subtantial rewrite of dynamics.f
2184     o allows staggered time-stepping
2185     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2186     o added bottom drag (linear + quadratic)
2187    
2188    checkpoint34
2189     o Modified exchange routines for correct reverse simulation.
2190     o Added verification output to comply with bug fix in impldiff.F
2191       as of c33 (exp2, natl_box).
2192     o Corrected store directives in dynamics.F
2193     o Corrected array boundaries in impldiff.F
2194     o Corrected array dimensions in gmredi.
2195       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2196     o Added routine GLOBAL_SUM_INT to global_sum.F
2197     o Added mdsio_gl.F for ECCO purposes.
2198    
2199    checkpoint33
2200     o Fixed bug in lower BC in impldiff.F
2201     o Fixed confusion about units of forcing arrays in FFIELDS.h
2202       namely Fu,Fv,Qnet,Qsw,EmPmR:
2203       - Removed verification/natl_box/code/external_fields_scale.F
2204         (did not differ from that in model/src)
2205       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2206         (see FFIELDS.h for description)
2207       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2208         kpp_calc.F and kpp_transport_t.F
2209       - Removed model/src/external_fields_scale.F and calls to it
2210       - verification/natl_box uses flux data with "atmospheric" sign so
2211         a special version of external_fields_load.F is used to
2212         change the data as it's read in. This way, the arrays
2213         have the right units and signs at all times tha a user could
2214         possibly use them.
2215     o Corrected genmake to delete a temporary file during configuration
2216    
2217    checkpoint32
2218     o Scaling of forcing fields moved from external_forcing.F to
2219       external_fields_scale.F, called directly after loading fields.
2220     o Surface relaxation terms added to surface tendency fields in
2221       extra subroutine.
2222     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2223       fields.
2224     o Changes in GMRedi to comply with packaging structure.
2225     o Modifications and bug fixes in KPP package.
2226     o Verification experiment for KPP added (verification/nat_box/)
2227    
2228    checkpoint31
2229     o Packages interface brought in line with defined standard
2230       -> new routines packages_...F
2231       -> changes in initialise_fixed.F, initialise_varia.F
2232       -> enables initialisation interface for ECCO package
2233     o Rescaling of external forcing fields immediately after read
2234       (removed from external_forcing.F)
2235       -> new: surface_fields_scale.F
2236       -> affects ini_foorcing.F, external_fields_load.F
2237     o Computation of surface tendencies before tendency updates.
2238       -> new: external_forcing_surf.F
2239     o Change of variable names useGMRedi, useKPP, useECCO
2240     o Further changes in dynamics.F, impldiff.F for TAMC
2241     o Tested for experiments 0, 2, 4.
2242       - not yet tested for GMRedi.
2243       - not yet tested for KPP.
2244    
2245    checkpoint30
2246     o Updates for OBCs
2247     o New experiment for test OBCs (internal_wave)
2248     o New output.txt in verification/exp4/results/
2249     o Updates for KPP: calculation of viscosity corrected, new variables
2250       kpp_dumpFreq and kpp_taveFreq
2251     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2252       and entry for T90 in genmake
2253    
2254    checkpoint29
2255     o packaged KPP and GM/Redi
2256    
2257    checkpoint28
2258     o Corrected initialization of hFacMin for difference vertical coordinates
2259     o Modified calculation of partial cell thickness to more robust algorithm
2260     o config_summary.F: replaced write_1D_... by write_0D_...
2261       read_write.F: added subroutines write_0D_...
2262     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2263       included some initialisations required for TAMC.
2264     o routine calc_isoslopes: modified sqrt computation to make it
2265       differentiable for zero argument.
2266     o routines dynamics, impldiff:
2267       included store directives and tape key computations required for TAMC.
2268     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2269    
2270    checkpoint27
2271     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2272       formulation works properly with variable resolution.
2273     o restructured the calling tree between the_model_main() and dynamics()
2274     o split initialise() into initialise_fixed() and initialise_varia()
2275     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2276       in new routine ini_psurf()
2277    
2278    checkpoint26
2279     o moved some #ifdef in optional routines to encompass everything
2280       except the argument declarations. This was using up some memory.
2281     o fixed macros like _ADT to work with both versions of Linux cpp
2282     o cleaned up some unused and uninitialized variables
2283       (helps when debugging with strict compile options)
2284     o split up CPP_EEOPTIONS.h into options and macros
2285       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2286     o patch for 2 processor JAM mode
2287    
2288    checkpoint25
2289     o updates for OBCs and NH
2290     o dramatically reduced memory usage
2291     o added "JAM" routines for use on Artic network
2292     o parameterization of convection by implicit vertical diffusion
2293     o added a diagnostic of convective index
2294     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2295       (this is was partly for OBCs and NH but also in anticipation of
2296        an explicit free-surface option)
2297     o initial state input files for U and V
2298    
2299    checkpoint24
2300     o Removed some spurious "REAL"s
2301     o Updated KPP to latest version from JPL
2302     o Added a COS(latitude) in horizontal viscosity
2303    
2304    checkpoint23
2305     o Added del^4 diffusion for salt and temperature
2306     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2307    
2308    checkpoint22
2309     o Made many small changes: implicit none, format(i5), etc...
2310     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2311    
2312    checkpoint21
2313     o Introduced new I/O package that supports direct-access records (mdsio.F)
2314     o Split-up mid-level I/O routines
2315     o Updated input data for experiments 0,1,2,4 and 5
2316     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2317    
2318    checkpoint20
2319     o Tidied up open-boundaries some more
2320     o Added non-hydrostatic code
2321     o Fixed some input data
2322     o Modified MPI start-up to work in "coupled" context.
2323    
2324    checkpoint19
2325     o Tidied up directory structure for verification experiments.
2326     o Added new code for open boundaries.
2327     o Corrected advective terms near boundaries.
2328     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2329     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2330     o Split default parameters out of ini_parms.F into set_defaults.F.
2331    
2332    checkpoint18
2333     o Further changes for optional code generation with
2334       CPP - ugh!
2335    
2336    checkpoint17
2337     o Beginning to incorporating modularity
2338       for supporting atmos. and ocean configs.
2339     o Small changes for TAMC complinace
2340     o New ultra simple test case. Barotropic box
2341       configuration "exp0".
2342    
2343    checkpoint16
2344     o Minor changes to exchange routines to support
2345       accumulation in reverse mode. Adjoint of an
2346       assignment is an addition.
2347     o Changes to support compilation by TAMC (LR(1)
2348       syntax) and by g77 under Linux ( 72 character
2349       limit ).
2350    
2351    checkpoint15
2352     Rewrote exchange routines to allow
2353     o General tile <-> tile connectivity.
2354     o TAMC reverse mode flag ( is this really needed? )
2355     o Variable width overlap and exchange region widths.
2356     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2357       shmput/shmget, VIA, SYSV shmem and every other cool
2358       communication method.
2359    
2360    checkpoint14
2361     Consistent isomorphism chages made. These allow dynamical core
2362     to support both pressure and meters as a vertical coordinate.
2363    
2364    checkpoint13
2365     Release which corrects global_max problem and a couple
2366     of KGM time-averaging diagnostic errors. Also contains
2367     a double-gyre experiment setup as well as the baseline
2368     4 degree global template. The double gyre template is
2369     organised to allow it to be applied automatically to
2370     the baseline configuration.
2371    
2372    branch-point-rdot
2373     A few tidy-ups have been made bt the real point of this
2374     check-point (excuse the pun) is to allow a branch to be
2375     made for the purposes of adding the rDot alterations.
2376     I don't want to commit the rDot to the main-trunk until
2377     we've actually tested it...
2378    
2379  checkpoint12  checkpoint12
2380   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
2381   configure script).   configure script).

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