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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.495 by edhill, Thu Jun 9 16:38:24 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 a quick fix for A/B checkpointing in OFFLINE mode
8    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
9      end-run around the C/Fortran linking horror in eesup/src/timers.F
10    o added pkg/runclock: allows user to terminate run based on wall clock
11    o added non-hydrostatic scaling parameter: nh_am2
12    o pkg/my82: futile attempt to make results compiler-independent by adding
13      some "_d 0", etc. no effect.
14    o for mnc output, fill the 'T' coordinate var with myTime and create a
15      separate 'iter' variable for iteration count
16    o pkg/diagnostics:
17      add new capability: output of Global/Regional & per-level statistics ;
18      tested against monitor output (including land & thSIce) on various exp.
19    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
20    
21    checkpoint57h_done
22      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
23      data.diagnostics, data.gchem, data.ptracers) is done.
24    
25    o pkg/diagnostics: prepare for Global/Regional statistics.
26      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
27    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
28      and rename it: DIFFERENT_MULTIPLE
29    
30    checkpoint57h_post
31    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
32    o pkg/diagnostics: change output frequency, now in seconds (instead
33      of Nb of iterations). This requires to change data.diagnostics.
34    checkpoint57h_pre
35    
36    o in mnc, let the user create the output dir if both mnc_outdir_date
37      and mnc_outdir_num are false
38    o add fflags() to pkg/diagnostics which allows one to specify, on a
39      per-file basis, the file precision [default behavior is unchanged]
40    o added diagnostics to pkg/kpp, including computation of mixed layer
41      depth based on a temperature/density criterion
42    o updated verification/natl_box to test the new pkg/kpp diagnostics
43    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
44    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
45    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
46      not mnc -- this mistake was found by JMC and is now corrected
47    
48    checkpoint57g_post
49    o add Adams-Bashforth 3rd Order time stepping:
50      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
51      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
52    checkpoint57g_pre
53    
54    o make lambda[Theta,Salt]ClimRelax spatially varying
55      (default remains spatially uniform constant based on tau)
56    o added new control variables
57      * init. uVel, vVel, etanN
58      * lambda[Theta,Salt]ClimRelax
59    o separate masks used for ctrl_pack/unpack 'from write_grid' output
60      (suggested by G. Forget)
61    
62    checkpoint57f_post
63    o add parameter "baseTime" = model base time = time at iteration zero
64      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
65      account for baseTime shift
66    o move Coriolis arrays from PARAMS.h to GRID.h
67    checkpoint57f_pre
68    
69    o mnc-ifying the seaice package
70    o introduced an alternative length scale calculation for use in the limiting
71      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
72    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
73    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
74      as well as grad(vort3).  Made it compatible with both approximate form
75      for the cubed sphere and full form of these gradients.  Added flag
76      useFullLeith to select between approximate and full form.  
77    o add "d0" in getcon.F to reduce differences between compilers/platforms
78      update output.txt of exp. fizhi-gridalt-hs
79    o change port_rand funtion to allow to set the seed.
80    o fix obscure MNC bug involving conversion between reals and integers
81      - it caused no problems with certain (eg. gcc, ifc) compilers but the
82        new version is now more standards-compliant
83    o adjoint-related modifications
84      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
85      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
86      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
87    
88    checkpoint57e_post
89    o Adding eddy stress controls a la Ferreira et al.
90    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
91    
92    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
93      update output.txt of exp. fizhi-gridalt-hs
94    o add more "Z" dimensions and associated coordinate vars to MNC
95    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
96    o parameter calendarDumps: when set, approximate months (30-31 days) and years
97      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
98      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
99      months and years.  Requires pkg/cal.
100    o diagnostics: add pickup functionality
101      - off by default for backwards compatibility
102      - current version only uses MDSIO -- MNC will be added
103    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
104    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
105    
106    checkpoint57d_post
107    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
108    o modify verification/ideal_2D_oce so that it tests the creation of mnc
109      output from the diagnostics package
110    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
111    o make genmake2 more portable by using ".$FS" instead of ".f" for more
112      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
113    o add coordinate variables to the MNC output from the diagnostics package
114    o change MNC-flags default value: true when useMNC=TRUE
115    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
116      the ability (off by default) to read the grid information using MNC
117    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
118    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
119    o do snap-shot diagnostics at the middle of the time-interval (instead of
120      at the end).
121    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
122      new test for AIM with thSIce + slab-ocean
123    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
124    o move state variable diagnostics to the beginning of the time step ;
125      (note: still needs some work specially for snap-shot diagnostics)
126      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
127    
128    checkpoint57c_post
129    o Change testing option (-ieee) to get closer agreement between g77 & ifort
130    o generate new output.txt files on faulks with g77 & the new -ieee option
131    checkpoint57c_pre
132    
133    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
134      update output.txt of exp. global_ocean.90x40x15
135    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
136      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
137    o add saltFlux(+File) forcing capability with periodicExternalForcing
138    o allow to use pkg diagnostics for GM-Redi & ThSIce output
139    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
140    o improvements for the MNC output from DIAGNOSTICS:
141      - correct handling of the unlimitied dimension
142      - all dims now have associated coordinate variables
143      - variables located at U, V, and Corner ("Z") points are now written
144        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
145        *all* data points are output
146    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
147    o added pkg/seaice/seaice_monitor.F
148    o mdsio_readfield.F can now read files visible only to master MPI process.
149    o pkg/seaice: some test code for ice-modified ocean stress
150    o exf_getffields interpolation defaults to bilinear for all scalar forcing
151      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
152      spurious negative numbers for precipitation and humidity.  Will cause
153      some small numerical differences for integrations using pkg/exf/exf_interp.F.
154    o pkg/ctrl/
155      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
156        May be enabled via doPackDiag
157      *  introduce z-scaling of
158         + gradient (doZscalePack) and
159         + control (doZscaleUnpack)
160    o pkg/mdsio/
161      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
162      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
163    
164    checkpoint57b_post
165    o simplify options in diagnostics_fill arguments (remove weird combinations)
166    o fix MNC coordinate variables so that they now contain per-face index
167      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
168      general, EXCH2 grids are only aligned to a "local" coordinate system
169    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
170    o Implement instantaneous output within pkg diagnostics:
171      setting a negative frequency in data.diagnostics produces
172     "snap-shot" output (as opposed to time-average if freq > 0)
173    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
174      NOTE: change ptracer diagnostics name: use 2 characters to work with
175            more than 9 tracers. Add also diagnostics of advect & diffus flux.
176    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
177      becomes the coordinate variable for the 'T' dimension
178    o add CF-style coordinate variables to MNC
179      - just a first cut:  numbers are meaningless on the cubesphere and
180        missing along the T axis but otherwise it works!
181    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
182    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
183    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
184      this is based directly on what the model compute, so that the content of
185      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
186    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
187    o clean up build options files for SunOS, in particular
188      - remove -traditional from xmakedepend
189      - change -xarch=v9 to -xarch=native for f77
190      - restore use of make (not gmake)
191      - add CC=gcc if using g77
192    o changes per discussion of AM, JMC, & EH3 today:
193      - move redundant "grid" variables out of "state" -- in preparation of
194        creating proper CF-style coordinate variables and in recognition
195        that any/all grid variables can be easily copied (eg. w/NCO) from
196        the grid files into any of the other NetCDF files
197      - *always* output grid variables with MDSIO (this will eventually be
198        changed)
199      - output MNC grid file if useMNC is true
200    o every instance of _END_MASTER() has been found and replaced with
201      _END_MASTER( myThid ) in order to satisfy certain picky Sun
202      preprocessors
203    o re-arrange diagnostics pkg initialisation:
204     - allow each package to extend the available diagnostics list
205     - add some checking and fix small problems (multi-threaded, ...)
206     - new S/R diagnostics_fill (replace fill_diagnostics):
207       look through the short list of active diag. (instead of the long list)
208       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
209    
210    checkpoint57a_post
211    o this set of changes restores TAMC compatibility
212      tested for global_ocean.90x40x15 adjoint on trough
213      (what a pain)
214    
215    checkpoint57a_pre
216    o some modifs in tools/build_options for sunos
217    o call ctrl_pack for ctrl at end for optimcycle=0
218    
219    checkpoint57
220    o add horizontal bi-harmonic viscosity for vertical velocity
221      - new parameter viscA4W (defaults to viscA4)
222      - affects only non-hydrostatic code
223      - to be done: no-slip lateral boundary conditions
224    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
225    o implement Implicit Vertical advection for pTracers
226    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
227      (implemented also for implicit vertical diffusion & advection)
228    o OBCS: extend application of tracer open boundary conditions
229      to a strip beyond the boundary of width Olx/Oly
230    o add call monitor to TAF set of required calls (flow directives)
231      and include in natl_box_adjoint
232    o untangle a few ifdefs related to cost, ctrl, autodiff
233      untangel a few ALLOW_ECCO_OPTIMIZATION
234    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
235      (theta2, salt2 in ecco_cost_weights)
236    
237    checkpoint56c_post
238    o OBCS as control variables
239      - update ctrl_ad_diff.list, obcs_ad_diff.list
240      - remove balance of obcs controls from default
241      - fix index bug nobcs in ctrl_init
242      - fix dummy fields filen in ctrl_pack
243      - add dummy weights for obcs
244    o lsopt: comment out fort.94 output
245    o optim:
246      - remove unnecessary header files
247      - adjusted namelists
248      - add xerbla.F to Makefile
249    o exf:
250      - multiple modifications of exf_check_range
251      - unit change in exf_init_runoff from [m/year] to [m/s]
252    o mdsio:
253      - i/o-vector change debugLevel from debLevA to debLevB
254    
255    checkpoint56b_post
256    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
257      is called from DO_THE_MODEL_IO
258      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
259      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
260      - clean up PTRACERS_WRITE_TIMEAVE a little
261    o add another verification experiment that tests both the cfc-pkg and
262      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
263      reactive tendencies treated inline with regular timestepping
264    o testreport previously did a lousy job of comparing small numbers, so
265      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
266      implemented in the little c-progam tmp_cmpnum.c which is embedded in
267      testreport.
268    o ptracers_monitor: bug fix for MPI
269    
270    checkpoint56a_post
271    o GCHEM: finish reorganizating the package
272      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
273        (introduces another 3D-array for each passive tracer, but only if
274        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
275        gchemTendency is not needed because the timestep is done separately)
276      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
277      - GCHEM is now---more or less cleanly---separate from PTRACERS
278      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
279        so clear to me how that should be done in a general way.
280    o CFC: improve formatting of output in CFC_ATMOS
281    o PTRACERS:
282      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
283        that ALL experiments with ptracers enable can be checked. This makes
284        GCHEM_MONITOR obsolete.
285      - include a runtime parameter PTRACERS_monitorFreq that defaults to
286        monitorFreq
287      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
288    o add PTRACERS (PTR0[1-5]) to testreport output
289    o exf_check_range:
290      * default changed to .TRUE.
291      * will check values for niter0 if debLevA, every timestep if debLevB
292      * STOP in exf_check_range if 'out of range'
293      * range chosen generous to allow for potential extema
294      TBD: a version with stricter range
295           permitted range would be runtime parameters
296    o GMredi:
297      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
298      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
299      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
300    o GCHEM:
301      - move call to GCHEM_FORCING_SEP, so that it is now called before
302        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
303      - introduced a useGCHEM runtime flag and applied it everywhere.
304      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
305        this flag is now only visible within GCHEM-pkg routines.
306      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
307        be replaced by a 3D array that is computed before thermodynamics; for
308        this, the tracer ID iTracer had to be included into the parameter list
309        of ptracers_forcing
310      - set up forward_step to call gchem_forcing, that will replace
311        gchem_forcing_int in ptracers_forcing
312      - cleaning up
313    o small cleaning of exch2: remove files that are also in eesupp/src
314    
315    checkpoint56
316    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
317    o mnc: cleanup "full" files--fixes out-of-memory problem
318    o ECCO-GODAE
319      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
320      * fully merged and updated from SIO code
321        windstress sign change affects
322        - exf_inscal_[u/v]stress
323        - sign of xx_tau[u/v] adjustments
324        - signs in cost_scat
325      * ctrl_get_gen: avoid update of tau[u/v] for first few days
326      * natl_box_adjoint updated and compressed
327      * 2-level checkpoint switch added
328        (tested in EXP. 1 of natl_box_adjoint)
329      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
330    o SVD
331      * first complete, non-hacked version for SVD calculations
332      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
333        performed via direct access files admtlm_vector.it????
334        (via ctrl_[un]pack)
335      * optimcycle is used for ARPACK iteration counter
336        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
337      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
338        and add linear transforms where necessary
339      * controls are initial/final SST, SSS (can be extended; need to check
340        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
341    o mdsio: filename info to both stderr, stdout
342    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
343      from sign change
344    
345    checkpoint55j_post
346    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
347      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
348    o add consistent build directories and .cvsignore files to verification
349    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
350    o make all subroutines 30 or less characters in length for certain older
351      compilers to work (a thorough search only turns up two routines in
352      pkg/ptracers)
353    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
354      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
355    
356    checkpoint55i_post
357    o change arrays for total vertical diffusivity (2.D if explicit,
358      3.D if implicit) ; each ptracer uses its own background value.
359    o added mnc/NetCDF output capability to ocn_compon_interf
360      - added bits to verification/cpl_aim+ocn so that it can run on
361        ITRDA and other clusters without the mpirun "-wd" option
362    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
363      configuration
364    o give MNC the ability to create additional files rather than
365      exceeding a specified file size limit "MNC_MAX_FILESIZE"
366      - the default is just less than 2GB which is a practical limit
367        on many systems
368    o Compute the non-local term using either KPP vertical diffusivity (=default)
369       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
370    
371    checkpoint55h_post
372    o add verification test "vermix"
373    o remove all the *_ioinc flags and replace with the single global
374      outputTypesInclusive flag
375    o allow to set a vertical profile of vertical diffusivity for T & S
376    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
377    o useMNC moved from data.mnc to data.pkg
378    
379    checkpoint55g_post
380    o Renaming carbon AD experiments to comply with testreport conventions
381    o Updating adjoint of Held-Suarez hs94.1x64x5
382    o Fixing directives for non-ECCO forward_step, after ECCO directives
383      have been fixed to avoid recomp. of do_oceanic_phys
384      Works well for global_ocean.90x40x15,
385      but recomp. issue remains for carbon
386    o Updating adjoint output for natl_box_adjoint after
387      pkg/ecco has been modified (see taga c55d_post)
388    
389    checkpoint55f_post
390    o rename to timeave_init_fixed
391    
392    checkpoint55e_post
393    o some delicate re-shuffle of store directives to avoid one
394      extra call of do_oceanic_physics
395      affects ecco_the_main_loop.F, do_oceanic_physics.F
396      checkpoint_lev1_directives.h
397    o NB: this may break global_ocean adjoint temporarily,
398      but it is clear how to fix it. Will do later, need this now.
399    
400    checkpoint55d_post
401    o ECCO specific cost function terms (up-to-date with 1x1 runs)
402    o ecco_cost_weights is modified to 1x1 runs
403    o modifs to allow observations to be read in as
404      single file or yearly files
405    o enable to read exf forcing fields as either
406      single file or yearly files (flag useExfYearlyFields)
407    checkpoint55d_pre
408    
409    o switch between 2-level and 3-level checkpointing
410    o add ability of MNC to write local and "partial" (eg. 2D slices where
411      the full 3D field is never actually stored) arrays to NetCDF files
412      with the correct (that is, the complete multi-dimensional) set of
413      array indicies
414      - used in mom_vecinv() to write the diagFreq output
415      - tested (demonstrated) in verification/aim.5l_cs
416    o further mnc-ification
417      - add verification/lab_sea to the list with mnc setups
418      - fix undefined mnc v-names in cd_code
419      - add kpp to mnc output (both snapshot and timeave)
420    o non-hydrostatic code
421      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
422        in calc_gw.F
423      - defaults to viscAh
424      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
425        friction or Leith) in non-hydrostatic mode, as long as there is
426        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
427    o pkg/cost
428      extend simple cost functions to treat time mean quantities
429      (T,U,V) via cost_accumulate_state from cost_tile
430    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
431        be 2 times larger than the minimum size the advection scheme requires.
432        now get a perfect conservation of salt in advect_cs test-exp (updated)
433    o GGL90 (Gaspar's TKE mixed layer)
434      - add horizontal diffusion of TKE, requires exchanges in
435        do_fields_blocking_exchanges, horizontal diffusivity is zero by
436        default. In OPA there is no horizontal diffusion of TKE but the
437        mixing coefficients are computed from a horizontal average of TKE of
438        6 points or so. I think that diffusion has a little more physical
439        justification.
440      - clean up ggl90_calc in the hope of reducing memory usage (this hope
441        was in vain)
442      - mask tke-variable in ggl90_init
443    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
444    o fix biharmonic diffusion on CS-grid.
445    o more obcs stuff
446      - added obcs_external_fields_load as an alternative to the EXF-pkg option
447        for reading boundary values. This routine is called from
448        obcs_prescribe_read
449      - updated obcs_check
450      - changed sponge layer relaxation parameter units for days to seconds
451      - turned off sponge layer by default
452      - changed argument list of OBCS_CALC to myTime+deltaTclock
453      - fixed about 35 bugs in obcs_external_fields_load
454    
455    checkpoint55c_post
456    o obcs stuff
457      - new runtime flags useOBCSprescribe, useOBCSbalance
458      - re-arranged obcs_calc
459      - moved exf_getobcs to obcs_prescibe_read
460        obcs_prescibe_read is called after ORLANSKI stuff
461        and independent of it (executable can contain all).
462      - updated obcs_check
463      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
464        These may be necessary only if tangential velocities are
465        prescribed at OB, not sure, needs testing.
466    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
467      which simplifies the calls and passes the ifc check-bounds test
468    
469    checkpoint55b_post
470    o add a 2D scalar, Z location, exchange_2 routine.
471    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
472      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
473      affects advect_cs results (for the wrong reason): update output.txt
474    o use a more standard discretization for biharmonic viscosity ;
475     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
476      affects results of dome set-up: update output.txt
477    o fix gad_advection.F (CubedSphere part), back to version 1.23
478    o fix bug in mom_vi_del2uv.F (CubedSphere part).
479    
480    checkpoint55a_post
481    o merged code to
482      * prescribe/read time-dependent open boundaries
483        (works in conjunction with exf, cal)
484      * sponge layer code for open boundaries
485      * each boundary N/S/E/W now has its own CPP option
486        (healthy for the adjoint)
487    
488    checkpoint55
489    o up-to-date adjoint of previous breaks
490      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
491      - global_ocean_ebm: adjoint still needs fix (TLM ok)
492      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
493      - carbon: * remove tr1-related adjoint verification
494                * add ptracer as control variable
495    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
496      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
497    
498    checkpoint54f_post
499    o in verification/carbin/ remove experiment related to
500      ALLOW_PASSIVE_TRACER (array tr1 etc)
501      code_ad/ input_ad/ results_ad
502    
503    o add two new packages
504      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
505        + subject to optimization (memory)
506      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
507        + subject to reordering (many GOTOs in the original code)
508        + so far opps is called for every (i,j) point, and then operates in
509          the vertical; one may want to reorder the scheme in order operate in
510          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
511          fields)
512    o overhaul of IO so that we now have flags for MDSIO and/or MNC
513      - all verification tests compile and run with linux_ia32_g77
514      - defaults are compatible with current input files--nothing
515        should change if you were not previously using MNC
516      - MNC output has been added in numerous places (eg. timeave)
517        but there are still a few writes not yet do-able with MNC
518        (this is in progress)
519      - flags now allow for either/or/both use of MDSIO and MNC and
520        documentation will soon follow
521      - numerous small formatting cleanups for ProTeX
522    o add version info (via BUILD_INFO.h) to MNC and stdout
523    
524    checkpoint54e_post
525    o add two new packages
526      - pp81 (Packanowski and Philander, 1981), Richardson number and
527        stratification dependent mixing
528      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
529      - these scheme operate in a similar manner as KPP (without ghat, of
530        course), however there is only one diffusivity that is used for both
531        temperature and salinity (and passive tracers)ç
532    o add offline package
533    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
534      provided by Stephanie Dutkiewicz
535    o genmake2: add ability to search for C compilers and cleanup test output
536      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
537    
538    checkpoint54d_post
539    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
540    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
541      leading to additional shift by 5 days each year of integration
542       (i.e. leading to considerable offset over the years)
543    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
544    o start with no AB and no initial filtering (staggerTimeStep):
545      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
546    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
547      (external loading & cpl import/export stay in forward_step.F)
548    o update coupling interface to work with new staggerTimeStep
549    o change MDSIO ptracers_pickup.
550    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
551    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
552    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
553    
554    checkpoint54c_post
555    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
556      this affects (truncation error) output.txt of test-exp:
557       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
558    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
559    o change Qnet to always be the net heat flux, (+upward).
560      affects (truncation error) output of natl_box exp.: updated
561    o define the max number of passive tracers in PTRACERS_SIZE.h
562    o start to test mnc routinely in exp0
563    o add sea-ice loading (sIceLoad) as a new forcing field.
564    
565    checkpoint54b_post
566    o add testreport "-j JOBS" option for parallel builds (tested and pretty
567       impressive on Altix and Opteron systems)
568    o diagnostics can now write NetCDF files through the mnc package
569    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
570    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
571    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
572      affects (truncation error) output of lab_sea & natl_box exp.: updated
573    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
574    
575    checkpoint54a_post
576    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
577    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
578    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
579    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
580      + internal_wave (shift in writing cg2d_ini_res)
581    checkpoint54a_pre
582    
583    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
584      - modified verification/lab_sea and natl_box_adjoint accordingly
585    
586    checkpoint54
587    checkpoint53g_post
588    o prepare splitting of thermodynamics: store convect.counter in common block
589    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
590      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
591    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
592    o new parameter "nShapS": allow to treat differently S from T (nShapT)
593    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
594    o restore adjointability
595    
596    checkpoint53f_post
597    o modifications that affect AIM experiment results (update output.txt):
598      - no advection of S at top interface Nr (pkg/generic_advdiff)
599      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
600    o AIM pkg:
601      - include stability function into surf.Flux derivative relative to Tsurf
602      - calculate clear-sky radiation & surface temp. change (for diagnostics)
603    
604    checkpoint53e_post
605    o merged cylindrical coord configuration
606    o added rotating_tank experiment
607    checkpoint53e_pre
608    
609    checkpoint53d_post
610    o faulks upgraded: re-generate output.txt that have changed:
611       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
612    o Added Bryan and Lewis, 1979, vertical diffusivity profile
613    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
614    o added Sadourny discretization of Coriolis
615      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
616      - re-enabled use of omega3 (useAbsVorticity)
617    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
618      vector-invariant equations
619      - note: does *NOT* yet use same variable visc. for no-slip BC's.
620    o recoded the lateral boundary conditions for non-hydrostatic w, this time
621      hopefully without new bugs
622      - still to do: biharmonic friction for non-hydrostatic w
623    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
624    o regenerated output for global_ocean_ebm (using -ieee)
625    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
626      of mom_common/
627      - simple re-arrangement of instructions within computing loop
628    checkpoint53d_pre
629    
630    checkpoint53c_post
631    o new version of coupler for AIM+thSIce and Ocean models
632     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
633     - land: change Evaporation of snow
634     - aim with thSIce: fix bug in snow-precip.
635    o changes to calc_gw.F
636     - bug fix for w^2 term near the bottom boundary
637     - (hopefully) improve the lateral slip boundary condtions for use with
638        partial/looped cells
639      - because the bug fix changes two verification experiments anyway (exp5
640        and plume on slope), change the lateral boundary condition from half slip
641        to the value of no_slip_sides
642    o ebm package wasnt quite up to the parallel task. Fixed that.
643    o Adjoint of EBM package + verification
644      * TLM OK
645      * ADM not sufficient accuracy yet (needs further testing)
646    
647    checkpoint53b_post
648    o Commiting new energy balance model to repository
649      * package is pkg/ebm
650      * verif. is verification/global_ocean_ebm
651      * references are in ebm_driver.F
652    C      * X. Wang, P. Stone and J. Marotzke, 1999:
653    C        Global thermohaline circulation. Part I:
654    C        Sensitivity to atmospheric moisture transport.
655    C        J. Climate 12(1), 71-82
656    C      * X. Wang, P. Stone and J. Marotzke, 1999:
657    C        Global thermohaline circulation. Part II:
658    C        Sensitivity with interactive transport.
659    C        J. Climate 12(1), 83-91
660    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
661    C        Destabilization of the thermohaline circulation
662    C        by atmospheric eddy transports.
663    C        J. Climate 7(12), 1870-1882
664    o Will need long integration testing.
665    checkpoint53b_pre
666    
667    o created pkg/mom_common in preparation for variable viscosity code
668    o renamed and split ini_mnc_io
669    o pkg/land: only liquid water can diffuse or run-off
670    o AIM using land: soil wetness availability account for snow
671    o added printMapIncludesZeros to EEPARMS namelist
672    
673    checkpoint53a_post
674    o restore TAMC compatiility for exf_constants.h
675      (no usage of _d in .h)
676    o Additional storing in KPP in an attempt to fix
677      TAMC problem with adjoint of KPP code.
678      (no success...)
679      Identical code works fine with TAF.
680    o Fixed verification/natl_box_adjoint experiments.
681      Initial conditions for Experiments 4 and 5 are now
682      set to "SEAICE_initialHEFF=0", which is more reasonable,
683      and hence gives results closer to that of Experiment 2.
684      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
685    
686    checkpoint53
687    o stable checkpoint with up to date adjoint
688      TLM tests only run for 1st grdchk at the moment. Its unclear if
689      this is a code problem or a problem with resetting code for g_
690      variables that is being autogenerated wrong.
691      Otherwise:
692       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
693       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
694         are both still in chaos following their security messes.
695    
696    checkpoint52n_post
697    o various build (mostly genmake2) changes including:
698      - ability to build/run more easily within Cygwin and MacOS X
699      - more complicated Makefiles with a stronger dependence on Gnu Make
700    o pkg/seaice modifications
701      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
702        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
703        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
704      - changed proxy for geostrophic velocity and updated
705        verification/lab_sea/results/* accordingly
706      - removed ADI dynamic solver from pkg/seaice
707      - replaced all occurrences of 1/CSTICE or 1/CSUICE
708        they caused a segmentation fault under certain circumstances
709      - removed unused field WATR
710    o bug fix in exf-package:
711      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
712         now reflect that.
713    o small fixes in the cal-package:
714      - set reference date to first of January for the 'model'-calendar
715      - failing of cal_CheckDate in cal_FullDate now actually results in a
716        warning
717    o small modifications in exf-package to increase flexibility:
718      - change climtempfreeze from a constant to a runtime parameter that
719        is specified in data.exf_clim (default = -1.9)
720      - introduce runtime parameter windstressmax (default = 2.0) that is
721        specified in data.exf
722    o fix in pkg/thsice:
723      - update Evap (Tsf changes) to be consistent with Latent heat flux
724      - maintain snow precipitation unchanged (even if Tsf >=0).
725     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
726    
727    checkpoint52m_post
728    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
729      this does not change any of the results, because myIter=0 in swfrac always
730      lead to jwtype=2 (the default anyway), but the call makes little sense
731      as a default
732    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
733    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
734      atmospheric model (AIM) to use it ; add a "slab ocean" component.
735    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
736    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
737    o extending useSingleCpuIO option to work with new exch2 I/O format
738      - old-style, missing-tile I/O is still accessible by defining CPP
739        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
740    o monitor package can write to NetCDF files and/or STDOUT
741    o fix re-definition bug in MNC_GRID_INIT_ALL()
742    o doc/api_reference added
743      - a framework for building an API Reference Manual using all
744        the "protex" comments embedded in the code
745      - see pkg/generic_advdiff, pkg/mnc for examples
746    o MNC:
747      - make myThid the last argument for all subroutines
748      - new default for the grid files: NO halos
749      - add useMNC and other run-time flags
750      - separate per-file-group handling of the unlimited dimension
751      - early initialization of MNC w/ flags read at the eeboot stage
752        and lookup tables set in initialize_fixed
753      - write all MNC output to a freshly-created directory
754    o thermodynamics sea-ice (thsice) is now tested with testreport.
755    o test exp. advect_cs: use the standard cs32 grid ; update output.
756    o Added functionality to grdchk:
757      pick global i,j,k position (or nearest wet) where to perform check.
758    
759    checkpoint52l_post
760    o new land formulation:
761      a) use ground enthalpy as prognostic variable to ensure exact
762         energy conservation.
763      b) account for water temperature and for latent heat of freezing
764         in all processes (rain, run-off, ground storage)
765      c) compute surface and ground temperature implicitly.
766    o aim_v23 modification for new land model:
767      a) Treat separately land / ocean / sea-ice surface fluxes
768         to allow implicit computation of land & sea-ice surface temp.
769      b) add snow precipitation.
770    checkpoint52l_pre
771    
772    o fix problem (when 1 tile is empty) in min/max monitor.
773    o fix bug in timeAve (u,vZetatave in common block)
774    o no restoring terms under ice for pkg/seaice
775    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
776    o bug fix for pkg/seaice pickups
777    o change MNC call locations and add coordinate attributes
778    o mask vorticity at the corner ; affects global_ocean.cs output
779    o fix ini_curvilinear_grid ; test CS experiments with mpi
780    o aim.5l_cs: modify sea-ice fraction input file ; update output
781    o exf: Adding simple range check routine for exf fields after read
782    
783    checkpoint52k_post
784    o removed top-level directory "diags"
785      - we migrated these functions to pkg/timeave a long time ago
786    o fixed bug introduced in pkg/monitor
787    o accuracy ctrlprec = 32 insuffient for gradient checks using
788      averaged fields (I/O via cost_averages)
789      -> use ctrl.h in active_file*.F to control I/O precision.
790    o paramter list of CALL ADTHE_MAIN_LOOP
791    o added initial do_the_model_io to ecco
792    o set all ...Freq to zero after cost_final
793      taveFreq, dumpFreq, pChkptFreq
794    o MAIN and ECCO differentiability restored
795    
796    checkpoint52j_post
797    o fix nchklev in tamc.h for global_ocean...
798    o Bringing flow and store directives up-to-date
799    o Really weird thing!
800      call do_the_model_io from the_main_loop with parameters
801      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
802      TAF places a faulty re-call of initialise_varia
803      after cost_final call which should not be there!
804    checkpoint52j_pre
805    
806    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
807      error messages
808    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
809    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
810      debug output
811    o modfied mdsio_writefield.F to handle non-global files under exch2
812    o update AIM Cubed-Sphere exp (aim.5l_cs):
813      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
814    o update AIM Equatorial Channel exp:
815      use standard aim_v23 pkg and change the SST fields to be more realistic.
816    o globalFile now works with exch2
817    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
818      mon_vort3.F to make exch2 friendly with >1 tile per cube face
819    o limit timeave output for hi-res integrations
820    
821    checkpoint52i_post
822    o removed CPP_EEOPTIONS.h from verification/*/code
823    o updated the tiling for global_ocean_pressure
824    checkpoint52i_pre
825    
826    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
827      the old pkg/aim).
828    
829    checkpoint52h_pre
830    o shortened offending lines in exch2_send_rx?.template
831    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
832    o genmake2: add build & execute test for NetCDF code
833    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
834      old grid files, moved CPP_EEMACROS.h to pkg/exch2
835    o added useSingleCPUIO flag to monitor.F and mon_out.F
836    o added temporary hack for sea-ice dynamics on the cube:
837      metric terms are ignored and it is assumed that
838      there is no sea-ice on cube faces 1, 2, 4, and 5.
839    
840    checkpoint52f_post
841    o added exch2 cube routines to pkg/exch2
842    o modified hs94.cs-32x32x5 to use it
843    o added new grid files to hs94.cs-32x32x5
844    checkpoint52f_pre
845    
846    checkpoint52e_post
847    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
848      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
849    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
850      to work with implicit vertical advection and AB ;
851    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
852    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
853     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
854    checkpoint52e_pre
855    
856    o fix bug in impldiff when Nr=1 or Nr=2.
857    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
858    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
859    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
860      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
861    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
862    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
863    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
864    
865    checkpoint52d_post
866    o re-tiled many expts to allow comparison in multi-processor mode
867      - updated output accordingly
868      - changed hs94.128x64x5 to use intial T from file rather than use the
869        random number generator
870    o add infrastructure in model routines for fizhi and gridalt packages
871    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
872    o changes to permit hi-res, cubed-sphere, configuration
873      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
874      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
875      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
876        of surface winds for the cube
877      (A verification experiment, based on global_ocean.cs32x15, but with
878       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
879       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
880       complete with example surface forcing files and matlab scripts to look
881       at the output and compare it with that of global_ocean.cs32x15.)
882    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
883       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
884       to conform to the common rule.
885    o check-in the first version of the coupler + interfaces for multi-components
886       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
887       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
888       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
889       - ocean and atmos. share the same horizontal grid (no interpolation).
890       - exchanges between component and coupler is done in forward_step
891    o new verification experiment, cpl_aim+ocn:
892       coupled ocean - AIM atmosphere on cs32 grid.
893    
894    checkpoint52d_pre
895    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
896    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
897    
898    checkpoint52c_post
899    o Fixing OPTIONS files for use of exf:
900      - ALLOW_ECCO not needed
901      - ECCO_CPPOPTIONS.h should not be included from
902        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
903        as has been the case in the past
904      - All cal/exf related options are currently set in
905        single header file. Should remain so until we
906        agree on a consistent new policy.
907    o Removed all CPP options for cal package.
908      cal has no more CPP options.
909    o modified STOREs in GAD_ADVECTION
910    o corrected key comp. for passkey
911    
912    checkpoint52b_post
913    o new version: "thsice" of thermodynamic sea-ice pkg:
914     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
915     - modify fluxes but do not change theta directly;
916     - light cleaning of bulk_force pkg (still needed with thsice).
917     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
918       + output_thsice.txt to test thsice & bulk_force pkgs.
919    o put back grid & coriolis monitor output.
920    checkpoint52b_pre
921    
922    o call "do_the_model_io" at the beginning (=> dump initial state)
923    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
924    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
925      (need info on NUMBER_OF_PTRACERS)
926    o missing PTRACERS headers in some routines
927    o default tamc.h in pkg/autodiff supposed to crash
928      to ensure proper customization
929    
930    checkpoint52a_post
931    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
932      - moved surfaceTendencyTice from pkg/seaice to main code
933      - subroutine FREEZE_SURFACE now limits only surface temperature
934        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
935        => new output.txt for global_ocean.cs32x15 & global_with_exf
936      - keep the old version of FREEZE for backward compatibility;
937        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
938      - corresponding modifs for TAF directives
939    o added surface flux output variables to TIMEAVE_STATVARS
940    o time-averaged output for pkg/ptracers
941    o fix problem with ECCO-related divided adjoint
942      snapshot file was missing some ad-variables,
943      but no warning issued by TAF
944    
945    checkpoint52a_pre
946    o some bug fixes for #undef REAL4_IS_SLOW
947    
948    checkpoint52 = ecco_c52_e35
949    o after testing adjoints of checkpoint51u_post
950    
951    checkpoint51u_post
952    o this is the post-merge tag of the ecco-branch
953      (needs another clean checkout and re-testing)
954    o various natl_box_adjoint configs and results
955      but no input fields
956    o obcs adjoint not yet merged!
957    o adding ECCO global 1x1 and 2x2 degree configs
958    o updated/extended some store directives for seaice
959    o pkg/ecco now containes ecco-specific part of cost function
960    o top level routines the_main_loop, forward_step
961      supersede those in model/src/
962      previous input data.cost now in data.ecco
963      (new namelist ecco_cost_nml)
964    o in ctrl/ cleaned some cross-dependencies and updated CPP options
965    
966    checkpoint51t_post
967    o this is the pre-merge tag of the ecco-branch
968    
969    checkpoint51s_post
970    o cleanup: removed various obsolete #define-s
971    o pkg/grdchk
972      - renamed 'ph-grd 3' to 'grad-res'
973      - merged from ecco-branch
974        (remaining bug fixes for obcs gradient checks)
975      - additional high-precision output for testreport
976        (grep for 'precision_grdchk_result')
977    
978    checkpoint51r_post
979    o cleaned up or removed CPP_OPTIONS.h files
980    o updated results for some of the tests to reflect the new
981      optfiles (-ieee: -O0 instead of -O3)
982    
983    checkpoint51q_post
984    o cd_code:
985      - moved cd_scheme.F -> cd_code_scheme.F
986      - separate read_checkpoint from cd_code_ini_vars.F
987      - separated cd_code part from write_checkpoint
988      - updated AD_SOURCE, generated .flow
989      - added CD_CODE_VARS.h to the_main_loop
990      - Moving cd_code specific store dir.s to pkg/cd_code
991    o ctrl package totally restructured
992      - pack/unpack now optional and decoupled from
993        xx_/adxx_ I/O
994      - ctrl_pack/unpack cleaned
995        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
996      - confined inclusion of AD_CONFIG.h to where necessary.
997    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
998    
999    checkpoint51p_post
1000    o create initial cd_code package
1001      - WARNING: the initialization of fields within packages
1002        is broken because INI_FIELDS (where READ_CHECKPOINT is
1003        called) is called *before* PACKAGES_INIT_VARIABLES.
1004        This seems to be backwards since
1005        1) its important to initially zero the entire field including
1006           the "halo" region
1007        2) zeroing needs to be done *before* reading pickup info
1008           and the pickup call might or might not happen in any
1009           particular run
1010      - this needs an overhaul for R2
1011    o cleanup verification/*/code/GMREDI_OPTIONS.h
1012    o cleanup testreport
1013    
1014    checkpoint51o_post
1015    o bringing AD-related verif's up to date with genmake2
1016      - carbon/
1017      - global_ocean.90x40x15/
1018      - hs.94.1x64x5/
1019      - (front_relax/ )
1020    o (more) consistent directory structure for AD-related verif.'s
1021    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1022    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1023    o bug fix in find_alpha.F for MDJWF:
1024      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1025        change rho -> rho-rhoConst
1026      - replace call find_rho to find_rhonum
1027    o initialisation of rFlx extended to full array (required by TAF)
1028      and shifted to thermodynamics
1029    o removed PTRACERS.h in ptracers routine
1030    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1031    o Correcting initialisations for fVerU, fVerV.
1032    o helping TAF to recognize dependency on kUp for
1033      fVerU, fVerV
1034    o Replacing delZ by delR in pkg/ctrl/
1035    checkpoint51o_pre
1036    
1037    o undid all of cp51 pending some cleanups and discussion
1038    o added the [#include "AD_CONFIG.h"] statement to all files that need
1039       it for adjoint/tl #defines
1040     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1041     o removed tools/genmake since it no longer works
1042    
1043    checkpoint51n_post
1044    o modifications to make FREEZE flux visible to pkg/kpp
1045      - moved surfaceTendencyTice from pkg/seaice to main code
1046      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1047      - subroutine FREEZE now limits only surface temperature
1048        (this means new output.txt for global_ocean.90x40x15,
1049         global_ocean.cs32x15, and global_with_exf)
1050    o added surface flux output variables to TIMEAVE_STATVARS
1051    
1052    checkpoint51n_pre
1053    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1054    o added [#include "AD_CONFIG.h"] to all files that use the following
1055      defines:
1056      - ALLOW_ADJOINT_RUN
1057      - ALLOW_TANGENTLINEAR_RUN
1058      - ALLOW_ECCO_OPTIMIZATION
1059    
1060    checkpoint51m_post
1061    o incorporating changes to get TAMC/TAF working in genmake2
1062      - added new TAMC/TAF targets to the Makefile
1063      - various cleanups related to package handling
1064      - these changes should have no impact on the forward model
1065    
1066    checkpoint51l_post
1067    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1068     - faster algorithm for cal_addtime.F
1069     - higher precision arithmetic, where needed
1070     - pkg/exf *startdate variables changed from calendar date to
1071       model integration time
1072    
1073    checkpoint51l_pre
1074    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1075    o enable to apply restoring on S & T only in a latitude band.
1076    o update output (external_forcing_surf modif. change truncation errors)
1077       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1078    
1079    checkpoint51k_post
1080    o change default to: useNHMTerms=.FALSE.
1081     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1082       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1083     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1084        exp1, ideal_2D_oce
1085     - change data file of oceanic exp (leave the results unchanged for now)
1086       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1087    o set gravitySign automatically according to the vertical coordinate used
1088      (and change sign: back to "logical" value: +1 when R increases downward)
1089    o added an include barrier to the default CPP_OPTIONS.h and
1090      removed the #include "PACKAGES_CONFIG.h" from it
1091    o fix a bug in mom_fluxform (from chk51j_post)
1092    
1093    checkpoint51j_post
1094    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1095    o adjusted some flow directives (dynamics, thermodynamics)
1096    o added cubed-sphere case to test cost function
1097    o heckpoint_lev?_directives.h now include
1098      pkg-specific directives, whenever those are enabled.
1099    o Moving pkg-specific flow directives to corresponding pkg
1100      Moving pkg-specific differentiation list to corresponding pkg
1101      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1102      ---> conventions are
1103           - pkg_ad.flow
1104           - pkg_ad_diff.list
1105           - pkg_ad_check_lev?_dir.h
1106    
1107    checkpoint51i_post
1108    o merge of the branch-genmake2
1109      - knowingly breaks the older genmake
1110      - automatic generation of all ALLOW_${PKG_NAME} defines
1111      - new testreport supersedes older testscript
1112    o large number of package inclusion and header cleanups
1113    checkpoint51i_pre
1114    
1115    o new output for adjoin of global ocean vector invariant
1116    o fix for checkpoint of thermodynamic seaice and bulk_force
1117    o Steph gchem various cleanups
1118    
1119    checkpoint 51h_pre
1120    o fixed some single quotes
1121    o modify gchem pkg to be more versatile
1122    o modifications to clean up dic pkg
1123    o add pkg/cfc
1124    
1125    checkpoint51g_post
1126    o provide links for ARPACK and ADM*TLM
1127    o start removing verification/vero/
1128    o update AD-related stuff
1129      (in particular some IF-statements in model/src/ routines)
1130    o adding to verification/global_ocean.90x40x15/ adjoint of
1131      vector invariant setup
1132    
1133    checkpoint51f_post
1134    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1135    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1136      of tracer Green's fucntions for ocean inversion project.
1137    
1138    checkpoint51f_pre
1139    o Added on-the-fly spatial interpolation capability
1140        "USE_EXF_INTERPOLATION" to pkg/exf.
1141      - This is a temporary Cartesian-grid hack until
1142        the super-duper ESMF coupler becomes available.
1143      - See verification/global_with_exf/README for usage example.
1144      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1145        flags and modified pkg/seaice accordingly.
1146    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1147        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1148        non-local transport term.
1149    
1150    checkpoint51e_post
1151    o pkg/mom_vecinv:
1152      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1153      - add time-ave diagnostic of vorticity advection.
1154    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1155    o atmospheric geopotential: - include water vapor effect;
1156                                - use p^kappa in p* scaling.
1157    o land pkg: read initial state from files.
1158    o AIM : add stratospheric drag in the upper level
1159    
1160    checkpoint51d_post
1161    o change function ILNBLNK (=> last non-blank char.) to return zero
1162      (instead of the string length) when the string. char is empty
1163    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1164    o modif's to restore TAMC compatibility
1165      - avoid "_d" constructs in PARAMETER declarations
1166      - avoid interrupting lines by comment lines
1167    o Use cluster local disks for purely local I/O
1168      vs. globally visible disks needed for ctrl stuff
1169      (merged from ecco-branch)
1170      - new active_file_loc... and mdsio_..._loc routines
1171      - affected packages: autodiff, ctrl, grdchk, mdsio
1172    
1173    checkpoint51c_post
1174    o introducing integer flag debugLevel
1175      - debLevZero: suppress all output
1176      - debLevA: standard
1177      - debLevB: equivalent to current debugMode=.TRUE.
1178    o introducing pathname variable mdsioLocalDir for mdsio
1179      that can be specified at runtime
1180      (relevant for cluster I/O to local disk)
1181    `
1182    >>>checkpoint51b_post
1183    adjoint of ptracers
1184    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1185    o extended state in checkpoint_lev?, etc.
1186    o alternative ctrl/cost with tr1 or ptracer
1187    o new comlev1_bibj_ptracers
1188    o new ptracers.flow
1189    o made ptracers_forcing same as external_forcing_s
1190    o added verification for adjoint with ptracers
1191      - adm. grdchk fail so far
1192      - tlm. grdchk OK
1193      - checked tapelev/comlev recomputations: OK
1194    <<<checkpoint51b_pre
1195    
1196    checkpoint51a_post
1197    o added code for biogeochemistry package
1198      - new pkgs: dic, gchem
1199      - new subroutine in ptracers
1200    o modify code for biogeo packages
1201      - in model/src and pkg/ptracers
1202    
1203    checkpoint51
1204    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1205      - autodiff, ctrl, exf, grdchk, seaice
1206      kept separate packages
1207      - cost, ecco, obcs
1208    o updating verification/internal_wave, verification/lab_sea
1209      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1210    
1211    checkpoint50i_post
1212    o Preparing next differentiable checkpoint and sync
1213      of MAIN vs. ecco-branch
1214      - 1st step: this one is differentiable
1215      - 2nd step: next(! not this) checkpoint will have updated packages
1216                  from ecco-branch)
1217    
1218    checkpoint50h_post
1219    o new package "land": provide surface BC for AIM.
1220    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1221    o AIM: use true log-P extrapolation for near surface temp (= as in
1222        F.Molteni paper) ; update aim.5l_cs output.
1223    o New variable in PARM03 for more flexible pickups
1224    o somewhat cleaned package initialisation sequence for
1225      ctrl/ cost/ ecco/ in packages_... routines
1226    
1227    checkpoint50g_post
1228    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1229      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1230      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1231        made the default because of faster convergence than ADI
1232    
1233    checkpoint50f_post
1234    o exf totally restructured
1235      - replaced all exf_set_ routines by one generic exf_set_gen.F
1236        and made sure it's still differentiable
1237      - split exf_getffields.F into new exf_bulkformulae.F
1238      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1239      - updated adjoint/makefile and relevant verif. accordingly
1240    
1241    checkpoint50f_pre
1242     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1243          + change Evap over land. (update aim.5l_cs output)
1244     o added missing .cvsignores and made uniform across expts
1245     o changed configuration of tidal_basin_2d expt
1246     o added pkg/debug functions for tracing code in fatal crashes
1247     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1248     o new fn in pkg/monitor to stop model if solution grows too big
1249     o removed lots of single quotes from comments
1250    
1251    checkpoint50e_post
1252    o make KPP work with PTRACERS
1253     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1254       nearly a copy of kpp_transport_s
1255     - there is no analogue to SurfaceTendencyS, so I have to use
1256       gPtr(of the surface layer) instead
1257    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1258    checkpoint50e_pre
1259    
1260    checkpoint50d_post
1261    o change kpp output from multiple-record state files to single-record state
1262      files analogous to write_state.F
1263    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1264      analogous to the cg2d-related output.
1265    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1266      so that writing to internal file fn (with length 512) fails.
1267    checkpoint50d_pre
1268    
1269    checkpoint50c_post
1270    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1271    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1272    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1273    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1274    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1275    
1276    checkpoint50c_pre
1277    Merging from release1_p13:
1278    o bug fix for pkg/seaice dynamic solver
1279    o Added SEAICE_initialHEFF to pkg/seaice
1280    
1281    checkpoint50b_post
1282    o store u*,v* in gU,V instead of in guNm1,gvNm1
1283    o in order to put the momForcing out of the Adams-Bashforth:
1284      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1285      to timestep.F
1286    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1287    o re-generate output for highly sensitive test-exp:
1288       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1289    
1290    checkpoint50b_pre
1291    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1292    o corrected CPP option mismatch in exf_Bulk... functions for case
1293      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1294    
1295    checkpoint50a_post
1296    o Bug fix for merging between c50 and KPP.
1297      ikey was passed from thermodynamics to kpp_calc via
1298      common block rather than being recomputed in kpp_calc,
1299      in contradiction with new key itdkey.
1300      New key ikppkey created, and tamc.h headers updated.
1301    
1302    checkpoint50
1303    - 2nd step of merge with ecco-branch:
1304      merge changes in ecco-branch back into main trunk
1305    - bug fix in find_alpha
1306    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1307    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1308    - merged some sliced AD support routines
1309    
1310    checkpoint49
1311    merged from ecco-branch:
1312    o exf:
1313      - Enable initialisation of forcing fields to constant
1314        (runtime) values.
1315      - in exf_getffields.F
1316        Reduce i-/j-loop to interior domain, discarding overlaps.
1317        That also fixes wrong TAF-key computations for key_1, key_2
1318        with bulf formulae.
1319      - exf_init.F modify #ifdef for exf_init_evap
1320      - exf_getffieldrec.F, ctrl_getrec.F
1321        The following INT-usages are not safe:
1322          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1323          fldcount = int(fldsecs/fldperiod) + 1
1324        and were modified.
1325    o autodiff: checkpoint_lev...
1326      - updated storing for bulk formulae (some arrays were missing)
1327      - added state for seaice package
1328      - synchronized with main branch
1329    o DIVA:
1330      Modif.s in
1331      - the_main_loop.F
1332      - the_model_main.F
1333      and added cost_final_restore.F cost_final_store.F
1334      o With these changes, it is possible to fully separate
1335        the first forward run to compute the cost function (mdthe_main_loop)
1336        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1337        into separate model executions.
1338        This enables better tuning of DIVA to given queue sizes.
1339      o Loss of cost function value in consecutive DIVA runs is
1340        fixed by storing to 'costfinal' file.
1341      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1342        beginning/end of adjoint integration is accounted for.
1343      The current changes apply to TAF-1.4.26.
1344      TAF has one remaining bug, requiring one manual change
1345      (see MITgcm manual).
1346    o cal: synchronized between MAIN and ecco-branch
1347    
1348    checkpoint48i_post
1349    o Changes to restore differentiability of code w.r.t. previous tag
1350      (mostly adding new routines to make list and replacing
1351      pressure by totPhiHyd).
1352    o Updated and merged grdchk package
1353      - has both ADM and TLM checks
1354      - works for single- and multi-proc.
1355      - output cleaned
1356      - worked successfully for parallel DIVA
1357    o genmake:
1358      - Adding -platform=SP4
1359      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1360    o Modif. for DIVA:
1361      ctrl_unpack should not be called in intermediate DIVA interval.
1362      (similar thing would apply for active files such as
1363      tbar, sbar, psbar, which should not be reinitialised;
1364      only relevant for ecco-branch)
1365    
1366    checkpoint48h_post
1367    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1368    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1369    o Added SEAICE_initialHEFF to pkg/seaice
1370    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1371    
1372    checkpoint48g_post
1373    --- EOS:
1374    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1375      store total Potential in totPhyHyd for diagnostics & EOS.
1376    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1377    --- Pressure/geopotential gradient:
1378    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1379    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1380      ( changes results of global_ocean_pressure )
1381    o NLFS + z-coord.: add eta*Rho' contribution.
1382    o accurate phiHyd when using interface-W at the middle between 2 centers
1383     ( changes results of ideal_2D_oce )
1384    o includes r* 2nd term in potential gradient.
1385    
1386    checkpoint48f_post
1387    Merging from release1_p12:
1388    o Modifications for using pkg/exf with pkg/seaice
1389      - improved description of the various forcing configurations
1390      - added basic radiation bulk formulae to pkg/exf
1391      - units/sign fix for evap computation in exf_getffields.F
1392      - updated verification/global_with_exf/results/output.txt
1393    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1394      (SBO) core products, including oceanic mass, center-of-mass,
1395      angular, and bottom pressure (see pkg/sbo/README.sbo).
1396    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1397      to avoid negative values in shallow regions.
1398      - updated verification/natl_box/results/output.txt
1399      - updated verification/lab_sea/results/output.txt
1400    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1401    o Added useSingleCpuIO option (see PARAMS.h).
1402    o Updated useSingleCpuIO option in mdsio_writefield.F to
1403      work with multi-field files, e.g., for single-file pickup.
1404    o pkg/seaice:
1405      - bug fix in growth.F: QNET for no shortwave case
1406      - added HeffFile for specifying initial sea-ice thickness
1407      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1408    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1409      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1410    o pkg/seaice:
1411      - adjoint-friendly modifications
1412      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1413    
1414    checkpoint48e_post
1415    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1416    o dynamics: change definition of computational domain & adapt mom_fluxform
1417      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1418    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1419        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1420        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1421        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1422        inverted_barometer solid-body.cs-32x32x1
1423      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1424    
1425    checkpoint48d_post
1426    o in preparation for r*:
1427     a) use pre-computed gradient of hydrostatic potential:
1428        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1429     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1430        => affects results of glob_oce_pressure (different truncation error)  
1431      update output.txt of ideal_2D_oce & global_ocean_pressure
1432    
1433    checkpoint48d_pre
1434    o in preparation for r*:
1435      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1436      pass the 2 comp. of the grad. as arguments to momentum S/R.
1437      but for the moment, only used if it does not change the results.
1438    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1439    
1440    checkpoint48c_post
1441    Modifications in treatment of initial flux forcing controls
1442    to avoid extra storing of flux fields.
1443    
1444    checkpoint48c_pre
1445    o Added tidal_basin_2d experiment (currently 1D!)
1446    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1447    
1448    checkpoint48b_post
1449    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1450     (modification to pressure gradient not yet implemented)
1451    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1452      (for U & V) that are used for vertical advection of momentum.
1453    
1454    checkpoint48a_post
1455    o In preparation for r*, use temp. array to compute vertical transport
1456       in flux-form momentum pkg. => change results of few test-exp.
1457      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1458                        lab_sea, natl_box & plume_on_slope
1459    
1460    checkpoint48
1461    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1462    
1463    checkpoint47j_post
1464    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1465    o moved adexch from forward_step to addummy_in_stepping
1466    o added exch in ctrl_map_...
1467    o aveFreq.=0. at end of cost_final to avoid overwrite in
1468      reverse checkpointing loop
1469    o Yet more changes in gmredi:
1470      * adgmredi_calc_tensor
1471        avoiding all recomputation of gmredi_slope_limit
1472      * adgmredi_x/y/rtransport
1473        added flag for excessive storing to avoid recomp. of
1474        u/v/rtans, dTdx/y/z
1475        -> this is not really necessary and very memory-consuming
1476      * adgmredi_slope_psi:
1477        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1478      * gmredi_slope_limit
1479        re-activated full calculation of taperfct for case 'ac02'
1480    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1481    
1482    checkpoint47i_post
1483    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1484    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1485      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1486    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1487    o gmredi: fix few bugs.
1488    
1489    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1490    This will be a good checkpoint to plug into the ecco-branch.
1491    o few modif.'s to get latest version adjointed
1492      (mainly kick out code in ini_linear_phisurf)
1493    o modif's to run adjoint with exactConserv
1494    o case GM_BOLUS_ADVEC should be cleaned
1495      S/R gmredi_slope_psi should be cleaned
1496    o verification/carbon now has exactConserv=.TRUE.
1497    
1498    checkpoint47g_post
1499    o time-average AIM output: becomes independent from statvars time-average
1500      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1501    o After TAF bug fix:
1502      Tested adjoint of gmredi package.
1503      Tests were done with checkpoint47 rather than with latest
1504      checkpoint47f_post since the latter is broken for the adjoint
1505      verification/carbon/ contains both ADM and TLM gradient checks.
1506    Here they are, before they get changed/lost/stolen.
1507    Mostly modif.'s to fix numerical sensitivities.
1508    Gradient checks OK for
1509    - GM_taper_scheme:
1510      * clipping
1511      * ac02
1512      * linear
1513      * glw91
1514      * dm95
1515      * ldd97
1516    - GMREDI_OPTIONS:
1517      * GM_VISBECK_VARIABLE_K
1518      * GM_NON_UNITY_DIAGONAL
1519      * GM_EXTRA_DIAGONAL
1520      * GM_BOLUS_ADVEC
1521    in conjunction with data.gmredi parameters to be checked in
1522    in a few minutes under verification/carbon/code/
1523    
1524    checkpoint47f_post
1525    Merging from release1_p10:
1526    o modifications for using pkg/exf with pkg/seaice
1527      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1528        and SEAICE_EXTERNAL_FLUXES
1529      - pkg/exf CPP options EXF_READ_EVAP and
1530        EXF_NO_BULK_COMPUTATIONS
1531      - usage examples are Experiments 8 and 9 in
1532        verification/lab_sea/README
1533      - verification/lab_sea default experiment now uses
1534        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1535    
1536    checkpoint47e_post
1537    o created a tag prior to creating a branch
1538    
1539    checkpoint47d_post
1540    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1541      at the bottom boundary had an erroneous half slip boundary condition
1542    o added bottom drag and no slip boundary condition capabilities to
1543      oceanic pressure coordinates code
1544    o added new verification experiment global_ocean_pressure, this experiment is
1545      also described in the tutorial section of the manual
1546    checkpoint47d_pre
1547    
1548    checkpoint47c_post
1549    o Added a verification experiment for a global cubed-sphere ocean run
1550      -  verification/global_ocean.cubed32x32x30
1551      -  uses pkg/therm_seaice and pkg/bulk_forcing
1552    
1553    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1554    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1555      when using P-coordinate; only implemented for atmospheric config.
1556    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1557      NOTES: requires option NONLIN_FRSURF to be "#define".
1558    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1559    
1560    checkpoint47b_post
1561    Merging from release1_p9:
1562    o pkg/seaice
1563      - removed GOTO's and added taf directives
1564      - double precision constants to reduce the g77 (Linux)
1565        to F77 (SGI) differences reported in release1_p8
1566    o tools/genmake
1567      - added SGI options
1568    o verification/testscript
1569      - updated to that of checkpoint47a_post
1570    o verification/global_ocean.90x40x15/input/eedata
1571      - modified for SGI f77 compatibility
1572    o verification/lab_sea
1573      - added description of sea-ice model
1574      - added missing matlab routines
1575      - added test of thermodynamics parallelization
1576    
1577    checkpoint47a_post
1578    o new pkg: aim_v23
1579     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1580       for now, keep the same surface forcing as before.
1581     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1582     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1583     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1584    o add diagnostic of surface correction term in monitor output
1585    
1586    o bulk_force and therm_seaice
1587    - Two packages:  bulk_force (Bulk forcing)
1588      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1589    - Earlier integration from Stephaine Dutkiewicz
1590      and Patrick Heimbach.
1591    - Two ifdef statements for compile time,
1592       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1593    
1594    checkpoint47
1595    differentiable version of checkpoint46n_post
1596    o bug fix in quasihydrostaticterms
1597    o * "clean" adjoint code (in terms of extensive recomputations)
1598        can now be obtained for all GMREDI options (i.e. for
1599        - GM_VISBECK_VARIABLE_K
1600        - GM_NON_UNITY_DIAGONAL
1601        - GM_EXTRA_DIAGONAL
1602        - GM_BOLUS_ADVEC )
1603      * However, wrong gradient check problem remains unsolved.
1604      * New CPP options have been introduced for different
1605        tapering schemes
1606    o external_fields_load now part of differentiation list
1607    o pressure needs multiple storing;
1608      would be nice to have store_pressure at beginning or
1609      end of forward_step, e.g. by having phiHyd global (5-dim.)
1610      (NB: pressure is needed for certain cases in find_rho,
1611      which is also invoked through convective_adjustment).
1612    o recomputations in find_rho for cases
1613     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1614    o #define ATMOSPHERIC_LOADING should be differentiable
1615    o ini_forcing shifted to begining of initialise_varia
1616    o Incorporating QNVS line search routines into MITgcm
1617      (this is separate code, and therefore not under pkg)
1618      lsopt/, optim/
1619    o Updated verification/carbon/
1620      - #define GM_VISBECK_VARIABLE_K
1621      - GM_taper_scheme    = 'ldd97'    
1622    
1623    checkpoint46n_post
1624    Merging from release1_p8:
1625    o verification/natl_box:
1626      updating new external_fields_load routine
1627    o New package: pkg/seaice
1628      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1629      The sea-ice code is based on Hibler (1979-1980).
1630      Two sea-ice dynamic solvers, ADI and LSR, are included.
1631      In addition to computing prognostic sea-ice variables and diagnosing
1632      the forcing/external data fields that drive the ocean model,
1633      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1634      The implied surface heat flux is then stored in variable
1635      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1636      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1637      non-local transport term.  Because this call precedes model
1638      thermodynamics, temperature under sea-ice may not be "exactly" at
1639      the freezing point by the time theta is dumped or time-averaged.
1640      N.B.: fairly large differences in accuracy occur across
1641            different platforms/compilers; comparison between
1642            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1643            generated output gives:
1644       T           S           U           V
1645      C D M    c        m  s        m  s        m  s        m  s
1646      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1647      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1648      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1649    
1650      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1651    o GAD:
1652      - generated new common blocks to account for call of
1653        same gad routines with differing traceridentities
1654        (needed to modify tracerIdentity indices in GAD.h)
1655      - generated separate common blocks for case useCubedSphereExchange
1656        (Department of Futurology)
1657      - parameter lists to gmredi_?transport: added tracerIdentity
1658      - added new key indices to tamc.h
1659    o external_fields_load:
1660      - added this routine to TAF list
1661      - needed to make some common blocks global and additional storing
1662        along the same lines as exf package (checkpoint_lev?_directives.h)
1663    o exf:
1664      updated external forcing package
1665      - bug fixes carried over from ecco-branch
1666        (missing OBCS_OPTIONS.h in two routines)
1667      - enable easy to use "no forcing".
1668      - added exf I/O for atmospheric loading
1669      - added exf I/O for runoff data
1670      - transfered scaling between exf <-> MITgcm to exf namelist
1671    o Adding new verification experiment global_with_exf.
1672      This verification experiment is almost identical to the
1673      global_ocean.90x40x15 experiment, except that it uses
1674      the exf (and cal) package instead of the
1675      external_fields_load routine (cf README file).
1676    
1677    checkpoint46m_post
1678    o modified testscript to return -- when there are no lines of "%MON" output
1679    o added new flag "quasiHydrostatic" for QH mode
1680      and new routine quasihydrostaticterms()
1681    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1682      New routine: mom_u_coriolis_nh()
1683    o fixed sign of non-hydrostatic metric terms in u and v equations.
1684      Depend on correct sign of gravitySign.
1685    o added work.pc* to .cvsignore in aim directories using ifc
1686    o introduced flag for controllin non-hydrostatic metric terms
1687    o removed gravitySign from PARM04
1688    o switched to g77/ifc from pgf77 in aim experiments
1689    
1690    checkpoint46l_post
1691    o made convective adjustment work with pressure coordinates:
1692     - changed the direction of k-loop in convective_adjustment.F for the
1693       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1694     - adjusted the reference pressure k-index in convective_adjustment.F
1695     - adjusted the convection condition in convect.F (in analogy to
1696       calc_ivdc.F)
1697     - convective_adjustment no longer computes anything on the halos
1698     - removed the warnings about negative salinity from find_rho.F and
1699       find_alpha.F; instead the new routine look_for_neg_salinity, called
1700       at the beginning of find_rho, find_alpha, and find_beta, does a
1701       check of the entire slice, if CPP-option
1702       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1703    checkpoint46l_pre
1704    
1705    checkpoint46k_post
1706    o fixed the verification/global_ocean.90x40x15 experiment:
1707     - new bathymetry (the world according to A., JMC, and M.)
1708     - new initial fields and forcing fields (*.bin files)
1709     - new POLY3.COEFFS (for the next release one should switch to a full
1710       equation of state: JMD95P or MDJWF)
1711     - fixed several errors and redundancies in the data file
1712     - experiment uses looped cells
1713     - added matlab directory with diagnostic scripts for plotting of output
1714    
1715    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1716     - read AIM physics parameters from a file (data.aimphys)
1717     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1718    
1719    checkpoint46j_post
1720    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1721    o move wVel computation at the end of the time step, in S/R integr_continuity
1722    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1723    o update timeave pkg for wVel diagnostic.
1724    checkpoint46j_pre
1725    
1726    checkpoint46i_post
1727    o Clean up AIM package (and keep the results unchanged):
1728      include CPP_OPTION and use IMPLICT NONE in all routines ;
1729      declare all the variables _RL ; use _d 0 for all numerical constants.
1730      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1731    
1732    checkpoint46h_post
1733    o cleaned up the use of rhoNil and rhoConst.
1734      - rhoNil should only appear in the LINEAR equation of state, everywhere
1735        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1736        and the dynamical equations are all divided by rhoConst
1737    o introduced new parameter rhoConstFresh, a reference density of fresh
1738      water, to remove the fresh water flux's dependence on rhoNil. The default
1739      value is 999.8 kg/m^3
1740    o cleanup up external_forcing.F and external_forcing_surf.F
1741      - can now be used by both OCEANIC and OCEANICP
1742    checkpoint46h_pre
1743    
1744     Added code to convert surface volume flux (fresh water) into
1745     a mass flux when using P coordinates in the ocean (OCEANICP).
1746     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1747    
1748    checkpoint46g_post
1749    o Include a new diagnostic variable phiHydLow for the ocean model
1750      - in z-coordinates, it is the bottom pressure anomaly
1751      - in p-coordinates, it is the sea surface elevation
1752      - in both cases, these variable have global drift, reflecting the mass
1753        drift in z-coordinates and the volume drift in p-coordinates
1754      - included time averaging for phiHydLow, be aware of the drift!
1755    o depth-dependent computation of Bo_surf for pressure coordinates
1756      in the ocean (buoyancyRelation='OCEANICP')
1757      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1758        Theta, Salinity, and Pressure in the parameter list. This routine is
1759        presently contained in find_rho.F. This routine does not give the
1760        correct density for 'POLY3', which would be a z-dependent reference
1761        density.
1762    o cleaned up find_rho
1763      - removed obsolete 'eqn' from the parameter list.
1764    o added two new verification experiments: gop and goz
1765      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1766    checkpoint46g_pre
1767    
1768    checkpoint46f_post
1769    o Enable tangent linear (forward mode) gradient checks:
1770      - extended active file handling to g_... files
1771      - added TANGENT_SIMULATION to theSimulationMode
1772      - extended grdchk package accordingly
1773    o added tangent linear setup in verification/carbon/code_ftl
1774    o added adjoint setup in verification/front_relax/code_ad
1775    
1776    checkpoint46e_post
1777    o Added new equation of state -> MDJWF
1778      - EOS of McDougall et al., 2002, JAOT, submitted
1779      - caveat: the equation of state is only valid for a smaller (more
1780        realistic?) range of values than JMD95P/Z and UNESCO
1781      - added masks to the calculation of pressure in store_pressure
1782      - added more check values for density in check_eos (ini_eos.F), some of
1783        the old check values are out of the range of the MDJWF-eos, so don't
1784        expect perfect matches for those
1785    checkpoint46e_pre
1786    
1787    checkpoint46d_post
1788    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1789      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1790      case of pressure coordinates. eosType='JMD95Z' in
1791      combination with buoyancyRelation='OCEANICP' now causes an error.
1792    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1793      in find_alpha/beta.
1794    checkpoint46d_pre
1795    
1796    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1797      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1798    
1799    checkpoint46c_post
1800    o Changes necessary for ocean in p-coordinates
1801     -  Added new buoyancy relation = 'OCEANICP'
1802     -  Added new parameters = gravitySign (this used to be contained inside
1803        the factor dRdZ which I added when we first switched to R coordinates).
1804     X GM/Redi is not compatible (yet)
1805     X bottom drag and no-slip need to be debugged.
1806    checkpoint46c_pre
1807    
1808    checkpoint46b_post
1809    o Added new equation of state -> JMD95Z and JMD95P
1810      - EOS of Jackett and McDougall, 1995, JAOT
1811      - moved all EOS parameters into EOS.h
1812      - new routines ini_eos.F, store_pressure.F
1813    o Added UNESCO EOS, but not recommended because it requires
1814      in-situ temperature (see JMD95)
1815    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1816      unesco.f to be used with POLY3
1817    checkpoint46b_pre
1818    
1819    checkpoint46a_post
1820    o Added (atmospheric) pressure loading
1821      - new field in FFIELDS.h, etc...
1822      - new cpp flag ATMOSPHERIC_LOADING
1823    o Changed hFacC to _hFacC in calc_phi_hyd.F
1824    o Added SHORTWAVE_HEATING to some files for consistency
1825    checkpoint46a_pre
1826    
1827    checkpoint46
1828    further merges from release1_p5
1829    o new ctrl package
1830      - adopted from ECCO environment to enable optimization
1831      - added Eliassen Palm fluxes to controls
1832    o added Eliassen Palm flux controls to gradient check package
1833    o cost package
1834      - Compatible with new ctrl package
1835      - added Eliassen Palm cost hooks
1836      - modif's of existing cost functions
1837    o Adjoint-related bug fixes in kpp:
1838      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1839      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1840    o autodiff package
1841      - flow directives:
1842        + new for S/R do_the_model_io
1843        + enhanced for S/R checkpoint
1844        + new gmredi.flow
1845      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1846        disable adcommon.h/g_common.h by default.
1847      - fixed problem for adjoint of global_max
1848    o modified verification/carbon/
1849    o New setup for adjoint of global_ocean
1850    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1851    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1852    o incorporated hooks for sponge layer code (external_forcing.F)
1853    
1854    checkpoint45d_post
1855    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1856    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1857      (affects plume_on_slope "cg2d" output)
1858    o add new parameter deltaTfreesurf for free-surface time stepping
1859    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1860    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1861    o change phiMin in exp1 (to agree with documentation)
1862    o add new flags:
1863     - T,S forcing inside/outside Adams-Bashforth
1864     - turn off temp,salt advection and/or forcing
1865     - for each tracer, define internal flag for multiDimAdvection & A-B
1866    o monitor: change definition of KE to check conservation of Energy
1867    
1868    checkpoint45c_post
1869    o Removed f90 comments ("!")
1870    o Modified initialisations to enable exf package for MITgcm
1871      (without invoking ECCO_PACKAGE).
1872    o modifications to gradient check package (Martin Losch)
1873      - enable centered differences
1874      - modified format of standard output
1875    
1876    checkpoint45b_post
1877    o cleaned exchange calls in cg2d
1878    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1879    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1880      to configure barotropic setup (Martin Losch)
1881    o moved some initialisations within bi,bj loop in dynamics
1882      (TAF flow dependency)
1883    o in initialise_varia, moved call packages_init_variables
1884      before convective_adjustment_init
1885      (corresponding adjustment of TAF tape initialisation).
1886    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1887    
1888    checkpoint45a_post
1889    o compute Rho over the whole domain (extend iMin,jMin indices)
1890    o specific exchange for X-slice domain (case Ny=1)
1891    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1892    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1893    
1894    checkpoint44h_post = checkpoint45
1895    o Fix to restore differentiability:
1896      place at which packages_init_variables is called in
1897      initialise_varia is crucial for reverse control flow.
1898    o modifications in GMRedi to enable stable adjoint
1899      (corresponding modif's in thermodynamics, dynamics)
1900    o added missing hook for sponge layer code in external_forcing
1901    o modified test cost functions
1902    o storing in gad_advection (plus removal of write(0,*)!
1903    o missing headers TR1.h added in convective_adjustment routines
1904    o errorMessageUnit set non-equal zero in eeboot
1905      (conflict on some platforms, e.g. IBM SP3)
1906    o modified carbon verif.
1907    
1908    checkpoint44h_pre
1909    o vertical grid option: allow to put the Interface at the middle between
1910      2 cell-centers ; replace delZ in pkg/kpp by drF.
1911    o GM Advective form: Tracers are advected using the residual transport (=
1912      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1913    
1914    checkpoint44g_post
1915    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1916      results) ; ifdef missing in thermodynamics.F
1917    
1918    checkpoint44f_pre,checkpoint44f_post
1919    o added PTRACERS package
1920      This allows an arbitrary number of passive tracers to be integrated
1921      forward simultaneously with the dynamicaly model.
1922      + Implemented so far:
1923        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1924        - I/O and checkpointing
1925        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1926      + Not implemented so far:
1927        - KPP
1928        - OBCS
1929      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1930        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1931        line in data.pkg.
1932      + This package is disabled by default since it increases storage.
1933    
1934    
1935    o testscript: added -cleanup option
1936    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1937                 b) enable to filter 2D fields.
1938    
1939    checkpoint44e_pre,post
1940    o re-wrote convective adjustment to use pre-calculated weights
1941      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1942      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1943      Original calls to convect() still in place.
1944    
1945    chkpt44d_pre,post
1946    o added missing EXCLUDE_MONITOR flags
1947    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1948      (incompatible typ in MIN/MAX expressions caused problems
1949      on IBM SP3)
1950    o in genmake added variable MAKEDEPEND
1951      plus resetting for case SunOS
1952    o added timer_stats.c routine for IBM SP3
1953    o removed variables in dynamics
1954    !!! I forgot to create tag chkpt44d_pre !!!
1955    !!! But chkpt44d_pre = chkpt44c_post    !!!
1956    
1957    o real fresh water flux implemented with non-linear free-surface.
1958    
1959    chkpt44c_pre,post
1960    o few fix (mask in shap_s2, EmPmR in external_field_load,
1961      USE_NATURAL_BCS in solve_for_P);
1962    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1963    
1964    checkpoint44b_pre/_post
1965    o merge of relevant stuff from the ecco-branch:
1966      - genmake: removed $S64 overwrite for case SunOS
1967      - pkg/exf: update and corrections for field swapping and obcs
1968      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1969                  harmonized between ECCO and MITgcm
1970      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1971                      updated checkpointing_lev... lists for obcs
1972      - model/src: minor changes in forward_step, plot_field
1973                   added directive for divided adjoint in the_main_loop
1974      - pkg/mdsio: added mdsio_gl_slice
1975    
1976    o check parameters & config (chkpt44a_pre,post)
1977    o OBC and NonLin_FrSurf.
1978    
1979    checkpoint44
1980    o fix bug in mom_vi_del2uv
1981    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1982    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1983    o update AIM experiments (NCEP input files)
1984    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1985    o added some stuff for AD
1986    
1987    checkpoint43
1988    o added two new advection tests
1989    o added global 4x4 degree ocean test
1990    o added test of H&S94 with free surface on cube
1991    o some final mods for gradient check, adjoint,...
1992    
1993    checkpoint42
1994      Fixed AD-related problems:
1995    o Store directives up-to-date with re-arranged Adams-Bashforth
1996      (mainly thermodynamics.F)
1997    o New store directives for multi-dim. advection schemes
1998      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1999      * new common block and key passkey
2000      (mainly gad_advection.F)
2001    o Modified store directives for split of dynamics/thermodynamics
2002      for the case ALLOW_KPP
2003    o Cleaned argument list for timestep_tracer.F
2004    
2005    checkpoint41
2006    o re-formatted/added comments in prologues of key subroutines
2007      to work with protex
2008    
2009    checkpoint40
2010    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2011    o added FLT (floats) package from Arne along with demo. experiment
2012    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2013      implementation of forward-in-time forcing terms
2014    o more mods for non-linear free-surface including new variable
2015    o modified multi-dim method to work on cube
2016    o bug fix in KPP (from DM)
2017    
2018    checkpoint40pre9
2019    o added DST advection schemes
2020    o fix MPI bug on SGI's
2021    o modifications for non-linear free-surface
2022    o fixed conditionals for fixed flow/passive tracer only mode
2023    o added tension/strain form of stress tensor
2024    o changes to commenting of arguments for TAF/TAMC
2025    o added/updated many matlab scripts
2026    o added multi-dimensional advection method for tracers
2027      
2028    checkpoint40pre8
2029    o new package rw/
2030      Added method for dumping intermediate local arrays:
2031      mdsio_writetile - same as mdsio_writefield except works from inside
2032                        bi,bj loop
2033      mdsio_writelocal - same as mdsio_writetile except works for local
2034                         arrays
2035      write_local_r? - higher-level wrapper for mdsio_writelocal
2036      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2037      Example given at end of mom_vecinv.F that dumps some local arrays.
2038    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2039      control flux-form versus vector invariant code.
2040      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2041      or genmake -DISABLE ...
2042    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2043      (additional storing is now needed for case vecinv;
2044      currently nothing implemented to switch this storing off
2045      in case fluxform is used since no CPP flag available).
2046    
2047    checkpoint40pre7
2048    o bug fix in dynamics.F
2049      calc_viscosity called before k=1,Nr loop.
2050    o added some #ifdef's ALLOW_PASSIVE_TRACER
2051    o cleaned initialisations in ctrl_map_ini
2052      related to TAF
2053    
2054    checkpoint40pre6
2055    o split dynamics into thermodynamics & dynamics
2056    o corresponding split of calc_diffusivity into
2057      calc_diffusivity, calc_viscosity
2058      (kpp_calc_diff, kpp_calc_visc).
2059    o Added diffkr, kapgm to control variables
2060    o bug fix in gmredi_slope_limit for ldd97
2061    
2062    checkpoint40pre5
2063    o proper initialization of Adams-Bashforth time stepping
2064      + uses forward step for very first step of model (iter=0)
2065    o re-generated *all* output since almost all output is modified by this
2066      change (sorry but we've been putting this one off for about 2 years)
2067      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2068        *not* regenerated since they are already out of date and I don't
2069        want to create the impression that they are suddenly working.
2070    o removed KAP stuff for DEC's
2071    o modified/added many .cvsignore files in */code and */input
2072    o added new expt "solid-body.cs-32x32x1"
2073      + this uses an alternative form of ini_curvilinear_grid.F which
2074        is not necessarily any better than the current one...
2075    
2076    checkpoint40pre4
2077    o added re-initialisations of utrans,vtrans,rtrans in
2078      calc_common_factors which are crucial for TAF.
2079    o extended iMin,jMin range for calc_common_factors,
2080      calc_diffusivity
2081    o added option ALLOW_PASSIVE_TRACER
2082    o a few minor updates and fixes
2083    
2084    checkpoint40pre3
2085    o created calc_gtr1.F for gad package
2086    o split the_main_loop and re-introduced forward_step
2087    o some recomputations of nIter0 for TAMC
2088    
2089  checkpoint40pre2  checkpoint40pre2
2090  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
2091  o Added gradient check package  o Added gradient check package

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