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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.506 by jmc, Sun Jun 26 16:54:38 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 diagnostics pkg: change pointers so that 1 diagnostic can be used
8      several times with different frequencies.
9    o mnc-ify the thsice package as requested by Daniel Enderton
10      - the monitor--MNC output needs work
11      - many attributes need to be added (most are currently blank)
12    o mnc-ify theaim_v23 package as requested by Daniel Enderton
13      - many attributes need to be added (most are currently blank)
14    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
15    o add Sadourny like discretization to the 4th.O vorticity advection scheme
16    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
17      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
18         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
19    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
20     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
21    
22    checkpoint57i_post
23    o Diagnostics package was changed: diagnostic allocation is now deactivated
24      by setting an empty file name in the namelist (used to be by setting 0 frequency)
25    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
26      add 1rst Order upwind vertical Shear.
27    o add a quick fix for A/B checkpointing in OFFLINE mode
28    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
29      end-run around the C/Fortran linking horror in eesup/src/timers.F
30    o added pkg/runclock: allows user to terminate run based on wall clock
31    o added non-hydrostatic scaling parameter: nh_am2
32    o pkg/my82: futile attempt to make results compiler-independent by adding
33      some "_d 0", etc. no effect.
34    o for mnc output, fill the 'T' coordinate var with myTime and create a
35      separate 'iter' variable for iteration count
36    o pkg/diagnostics:
37      add new capability: output of Global/Regional & per-level statistics ;
38      tested against monitor output (including land & thSIce) on various exp.
39    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
40    
41    checkpoint57h_done
42      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
43      data.diagnostics, data.gchem, data.ptracers) is done.
44    
45    o pkg/diagnostics: prepare for Global/Regional statistics.
46      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
47    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
48      and rename it: DIFFERENT_MULTIPLE
49    
50    checkpoint57h_post
51    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
52    o pkg/diagnostics: change output frequency, now in seconds (instead
53      of Nb of iterations). This requires to change data.diagnostics.
54    checkpoint57h_pre
55    
56    o in mnc, let the user create the output dir if both mnc_outdir_date
57      and mnc_outdir_num are false
58    o add fflags() to pkg/diagnostics which allows one to specify, on a
59      per-file basis, the file precision [default behavior is unchanged]
60    o added diagnostics to pkg/kpp, including computation of mixed layer
61      depth based on a temperature/density criterion
62    o updated verification/natl_box to test the new pkg/kpp diagnostics
63    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
64    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
65    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
66      not mnc -- this mistake was found by JMC and is now corrected
67    
68    checkpoint57g_post
69    o add Adams-Bashforth 3rd Order time stepping:
70      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
71      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
72    checkpoint57g_pre
73    
74    o make lambda[Theta,Salt]ClimRelax spatially varying
75      (default remains spatially uniform constant based on tau)
76    o added new control variables
77      * init. uVel, vVel, etanN
78      * lambda[Theta,Salt]ClimRelax
79    o separate masks used for ctrl_pack/unpack 'from write_grid' output
80      (suggested by G. Forget)
81    
82    checkpoint57f_post
83    o add parameter "baseTime" = model base time = time at iteration zero
84      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
85      account for baseTime shift
86    o move Coriolis arrays from PARAMS.h to GRID.h
87    checkpoint57f_pre
88    
89    o mnc-ifying the seaice package
90    o introduced an alternative length scale calculation for use in the limiting
91      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
92    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
93    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
94      as well as grad(vort3).  Made it compatible with both approximate form
95      for the cubed sphere and full form of these gradients.  Added flag
96      useFullLeith to select between approximate and full form.  
97    o add "d0" in getcon.F to reduce differences between compilers/platforms
98      update output.txt of exp. fizhi-gridalt-hs
99    o change port_rand funtion to allow to set the seed.
100    o fix obscure MNC bug involving conversion between reals and integers
101      - it caused no problems with certain (eg. gcc, ifc) compilers but the
102        new version is now more standards-compliant
103    o adjoint-related modifications
104      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
105      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
106      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
107    
108    checkpoint57e_post
109    o Adding eddy stress controls a la Ferreira et al.
110    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
111    
112    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
113      update output.txt of exp. fizhi-gridalt-hs
114    o add more "Z" dimensions and associated coordinate vars to MNC
115    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
116    o parameter calendarDumps: when set, approximate months (30-31 days) and years
117      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
118      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
119      months and years.  Requires pkg/cal.
120    o diagnostics: add pickup functionality
121      - off by default for backwards compatibility
122      - current version only uses MDSIO -- MNC will be added
123    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
124    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
125    
126    checkpoint57d_post
127    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
128    o modify verification/ideal_2D_oce so that it tests the creation of mnc
129      output from the diagnostics package
130    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
131    o make genmake2 more portable by using ".$FS" instead of ".f" for more
132      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
133    o add coordinate variables to the MNC output from the diagnostics package
134    o change MNC-flags default value: true when useMNC=TRUE
135    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
136      the ability (off by default) to read the grid information using MNC
137    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
138    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
139    o do snap-shot diagnostics at the middle of the time-interval (instead of
140      at the end).
141    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
142      new test for AIM with thSIce + slab-ocean
143    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
144    o move state variable diagnostics to the beginning of the time step ;
145      (note: still needs some work specially for snap-shot diagnostics)
146      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
147    
148    checkpoint57c_post
149    o Change testing option (-ieee) to get closer agreement between g77 & ifort
150    o generate new output.txt files on faulks with g77 & the new -ieee option
151    checkpoint57c_pre
152    
153    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
154      update output.txt of exp. global_ocean.90x40x15
155    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
156      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
157    o add saltFlux(+File) forcing capability with periodicExternalForcing
158    o allow to use pkg diagnostics for GM-Redi & ThSIce output
159    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
160    o improvements for the MNC output from DIAGNOSTICS:
161      - correct handling of the unlimitied dimension
162      - all dims now have associated coordinate variables
163      - variables located at U, V, and Corner ("Z") points are now written
164        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
165        *all* data points are output
166    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
167    o added pkg/seaice/seaice_monitor.F
168    o mdsio_readfield.F can now read files visible only to master MPI process.
169    o pkg/seaice: some test code for ice-modified ocean stress
170    o exf_getffields interpolation defaults to bilinear for all scalar forcing
171      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
172      spurious negative numbers for precipitation and humidity.  Will cause
173      some small numerical differences for integrations using pkg/exf/exf_interp.F.
174    o pkg/ctrl/
175      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
176        May be enabled via doPackDiag
177      *  introduce z-scaling of
178         + gradient (doZscalePack) and
179         + control (doZscaleUnpack)
180    o pkg/mdsio/
181      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
182      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
183    
184    checkpoint57b_post
185    o simplify options in diagnostics_fill arguments (remove weird combinations)
186    o fix MNC coordinate variables so that they now contain per-face index
187      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
188      general, EXCH2 grids are only aligned to a "local" coordinate system
189    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
190    o Implement instantaneous output within pkg diagnostics:
191      setting a negative frequency in data.diagnostics produces
192     "snap-shot" output (as opposed to time-average if freq > 0)
193    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
194      NOTE: change ptracer diagnostics name: use 2 characters to work with
195            more than 9 tracers. Add also diagnostics of advect & diffus flux.
196    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
197      becomes the coordinate variable for the 'T' dimension
198    o add CF-style coordinate variables to MNC
199      - just a first cut:  numbers are meaningless on the cubesphere and
200        missing along the T axis but otherwise it works!
201    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
202    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
203    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
204      this is based directly on what the model compute, so that the content of
205      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
206    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
207    o clean up build options files for SunOS, in particular
208      - remove -traditional from xmakedepend
209      - change -xarch=v9 to -xarch=native for f77
210      - restore use of make (not gmake)
211      - add CC=gcc if using g77
212    o changes per discussion of AM, JMC, & EH3 today:
213      - move redundant "grid" variables out of "state" -- in preparation of
214        creating proper CF-style coordinate variables and in recognition
215        that any/all grid variables can be easily copied (eg. w/NCO) from
216        the grid files into any of the other NetCDF files
217      - *always* output grid variables with MDSIO (this will eventually be
218        changed)
219      - output MNC grid file if useMNC is true
220    o every instance of _END_MASTER() has been found and replaced with
221      _END_MASTER( myThid ) in order to satisfy certain picky Sun
222      preprocessors
223    o re-arrange diagnostics pkg initialisation:
224     - allow each package to extend the available diagnostics list
225     - add some checking and fix small problems (multi-threaded, ...)
226     - new S/R diagnostics_fill (replace fill_diagnostics):
227       look through the short list of active diag. (instead of the long list)
228       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
229    
230    checkpoint57a_post
231    o this set of changes restores TAMC compatibility
232      tested for global_ocean.90x40x15 adjoint on trough
233      (what a pain)
234    
235    checkpoint57a_pre
236    o some modifs in tools/build_options for sunos
237    o call ctrl_pack for ctrl at end for optimcycle=0
238    
239    checkpoint57
240    o add horizontal bi-harmonic viscosity for vertical velocity
241      - new parameter viscA4W (defaults to viscA4)
242      - affects only non-hydrostatic code
243      - to be done: no-slip lateral boundary conditions
244    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
245    o implement Implicit Vertical advection for pTracers
246    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
247      (implemented also for implicit vertical diffusion & advection)
248    o OBCS: extend application of tracer open boundary conditions
249      to a strip beyond the boundary of width Olx/Oly
250    o add call monitor to TAF set of required calls (flow directives)
251      and include in natl_box_adjoint
252    o untangle a few ifdefs related to cost, ctrl, autodiff
253      untangel a few ALLOW_ECCO_OPTIMIZATION
254    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
255      (theta2, salt2 in ecco_cost_weights)
256    
257    checkpoint56c_post
258    o OBCS as control variables
259      - update ctrl_ad_diff.list, obcs_ad_diff.list
260      - remove balance of obcs controls from default
261      - fix index bug nobcs in ctrl_init
262      - fix dummy fields filen in ctrl_pack
263      - add dummy weights for obcs
264    o lsopt: comment out fort.94 output
265    o optim:
266      - remove unnecessary header files
267      - adjusted namelists
268      - add xerbla.F to Makefile
269    o exf:
270      - multiple modifications of exf_check_range
271      - unit change in exf_init_runoff from [m/year] to [m/s]
272    o mdsio:
273      - i/o-vector change debugLevel from debLevA to debLevB
274    
275    checkpoint56b_post
276    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
277      is called from DO_THE_MODEL_IO
278      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
279      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
280      - clean up PTRACERS_WRITE_TIMEAVE a little
281    o add another verification experiment that tests both the cfc-pkg and
282      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
283      reactive tendencies treated inline with regular timestepping
284    o testreport previously did a lousy job of comparing small numbers, so
285      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
286      implemented in the little c-progam tmp_cmpnum.c which is embedded in
287      testreport.
288    o ptracers_monitor: bug fix for MPI
289    
290    checkpoint56a_post
291    o GCHEM: finish reorganizating the package
292      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
293        (introduces another 3D-array for each passive tracer, but only if
294        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
295        gchemTendency is not needed because the timestep is done separately)
296      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
297      - GCHEM is now---more or less cleanly---separate from PTRACERS
298      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
299        so clear to me how that should be done in a general way.
300    o CFC: improve formatting of output in CFC_ATMOS
301    o PTRACERS:
302      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
303        that ALL experiments with ptracers enable can be checked. This makes
304        GCHEM_MONITOR obsolete.
305      - include a runtime parameter PTRACERS_monitorFreq that defaults to
306        monitorFreq
307      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
308    o add PTRACERS (PTR0[1-5]) to testreport output
309    o exf_check_range:
310      * default changed to .TRUE.
311      * will check values for niter0 if debLevA, every timestep if debLevB
312      * STOP in exf_check_range if 'out of range'
313      * range chosen generous to allow for potential extema
314      TBD: a version with stricter range
315           permitted range would be runtime parameters
316    o GMredi:
317      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
318      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
319      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
320    o GCHEM:
321      - move call to GCHEM_FORCING_SEP, so that it is now called before
322        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
323      - introduced a useGCHEM runtime flag and applied it everywhere.
324      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
325        this flag is now only visible within GCHEM-pkg routines.
326      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
327        be replaced by a 3D array that is computed before thermodynamics; for
328        this, the tracer ID iTracer had to be included into the parameter list
329        of ptracers_forcing
330      - set up forward_step to call gchem_forcing, that will replace
331        gchem_forcing_int in ptracers_forcing
332      - cleaning up
333    o small cleaning of exch2: remove files that are also in eesupp/src
334    
335    checkpoint56
336    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
337    o mnc: cleanup "full" files--fixes out-of-memory problem
338    o ECCO-GODAE
339      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
340      * fully merged and updated from SIO code
341        windstress sign change affects
342        - exf_inscal_[u/v]stress
343        - sign of xx_tau[u/v] adjustments
344        - signs in cost_scat
345      * ctrl_get_gen: avoid update of tau[u/v] for first few days
346      * natl_box_adjoint updated and compressed
347      * 2-level checkpoint switch added
348        (tested in EXP. 1 of natl_box_adjoint)
349      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
350    o SVD
351      * first complete, non-hacked version for SVD calculations
352      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
353        performed via direct access files admtlm_vector.it????
354        (via ctrl_[un]pack)
355      * optimcycle is used for ARPACK iteration counter
356        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
357      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
358        and add linear transforms where necessary
359      * controls are initial/final SST, SSS (can be extended; need to check
360        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
361    o mdsio: filename info to both stderr, stdout
362    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
363      from sign change
364    
365    checkpoint55j_post
366    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
367      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
368    o add consistent build directories and .cvsignore files to verification
369    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
370    o make all subroutines 30 or less characters in length for certain older
371      compilers to work (a thorough search only turns up two routines in
372      pkg/ptracers)
373    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
374      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
375    
376    checkpoint55i_post
377    o change arrays for total vertical diffusivity (2.D if explicit,
378      3.D if implicit) ; each ptracer uses its own background value.
379    o added mnc/NetCDF output capability to ocn_compon_interf
380      - added bits to verification/cpl_aim+ocn so that it can run on
381        ITRDA and other clusters without the mpirun "-wd" option
382    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
383      configuration
384    o give MNC the ability to create additional files rather than
385      exceeding a specified file size limit "MNC_MAX_FILESIZE"
386      - the default is just less than 2GB which is a practical limit
387        on many systems
388    o Compute the non-local term using either KPP vertical diffusivity (=default)
389       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
390    
391    checkpoint55h_post
392    o add verification test "vermix"
393    o remove all the *_ioinc flags and replace with the single global
394      outputTypesInclusive flag
395    o allow to set a vertical profile of vertical diffusivity for T & S
396    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
397    o useMNC moved from data.mnc to data.pkg
398    
399    checkpoint55g_post
400    o Renaming carbon AD experiments to comply with testreport conventions
401    o Updating adjoint of Held-Suarez hs94.1x64x5
402    o Fixing directives for non-ECCO forward_step, after ECCO directives
403      have been fixed to avoid recomp. of do_oceanic_phys
404      Works well for global_ocean.90x40x15,
405      but recomp. issue remains for carbon
406    o Updating adjoint output for natl_box_adjoint after
407      pkg/ecco has been modified (see taga c55d_post)
408    
409    checkpoint55f_post
410    o rename to timeave_init_fixed
411    
412    checkpoint55e_post
413    o some delicate re-shuffle of store directives to avoid one
414      extra call of do_oceanic_physics
415      affects ecco_the_main_loop.F, do_oceanic_physics.F
416      checkpoint_lev1_directives.h
417    o NB: this may break global_ocean adjoint temporarily,
418      but it is clear how to fix it. Will do later, need this now.
419    
420    checkpoint55d_post
421    o ECCO specific cost function terms (up-to-date with 1x1 runs)
422    o ecco_cost_weights is modified to 1x1 runs
423    o modifs to allow observations to be read in as
424      single file or yearly files
425    o enable to read exf forcing fields as either
426      single file or yearly files (flag useExfYearlyFields)
427    checkpoint55d_pre
428    
429    o switch between 2-level and 3-level checkpointing
430    o add ability of MNC to write local and "partial" (eg. 2D slices where
431      the full 3D field is never actually stored) arrays to NetCDF files
432      with the correct (that is, the complete multi-dimensional) set of
433      array indicies
434      - used in mom_vecinv() to write the diagFreq output
435      - tested (demonstrated) in verification/aim.5l_cs
436    o further mnc-ification
437      - add verification/lab_sea to the list with mnc setups
438      - fix undefined mnc v-names in cd_code
439      - add kpp to mnc output (both snapshot and timeave)
440    o non-hydrostatic code
441      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
442        in calc_gw.F
443      - defaults to viscAh
444      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
445        friction or Leith) in non-hydrostatic mode, as long as there is
446        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
447    o pkg/cost
448      extend simple cost functions to treat time mean quantities
449      (T,U,V) via cost_accumulate_state from cost_tile
450    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
451        be 2 times larger than the minimum size the advection scheme requires.
452        now get a perfect conservation of salt in advect_cs test-exp (updated)
453    o GGL90 (Gaspar's TKE mixed layer)
454      - add horizontal diffusion of TKE, requires exchanges in
455        do_fields_blocking_exchanges, horizontal diffusivity is zero by
456        default. In OPA there is no horizontal diffusion of TKE but the
457        mixing coefficients are computed from a horizontal average of TKE of
458        6 points or so. I think that diffusion has a little more physical
459        justification.
460      - clean up ggl90_calc in the hope of reducing memory usage (this hope
461        was in vain)
462      - mask tke-variable in ggl90_init
463    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
464    o fix biharmonic diffusion on CS-grid.
465    o more obcs stuff
466      - added obcs_external_fields_load as an alternative to the EXF-pkg option
467        for reading boundary values. This routine is called from
468        obcs_prescribe_read
469      - updated obcs_check
470      - changed sponge layer relaxation parameter units for days to seconds
471      - turned off sponge layer by default
472      - changed argument list of OBCS_CALC to myTime+deltaTclock
473      - fixed about 35 bugs in obcs_external_fields_load
474    
475    checkpoint55c_post
476    o obcs stuff
477      - new runtime flags useOBCSprescribe, useOBCSbalance
478      - re-arranged obcs_calc
479      - moved exf_getobcs to obcs_prescibe_read
480        obcs_prescibe_read is called after ORLANSKI stuff
481        and independent of it (executable can contain all).
482      - updated obcs_check
483      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
484        These may be necessary only if tangential velocities are
485        prescribed at OB, not sure, needs testing.
486    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
487      which simplifies the calls and passes the ifc check-bounds test
488    
489    checkpoint55b_post
490    o add a 2D scalar, Z location, exchange_2 routine.
491    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
492      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
493      affects advect_cs results (for the wrong reason): update output.txt
494    o use a more standard discretization for biharmonic viscosity ;
495     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
496      affects results of dome set-up: update output.txt
497    o fix gad_advection.F (CubedSphere part), back to version 1.23
498    o fix bug in mom_vi_del2uv.F (CubedSphere part).
499    
500    checkpoint55a_post
501    o merged code to
502      * prescribe/read time-dependent open boundaries
503        (works in conjunction with exf, cal)
504      * sponge layer code for open boundaries
505      * each boundary N/S/E/W now has its own CPP option
506        (healthy for the adjoint)
507    
508    checkpoint55
509    o up-to-date adjoint of previous breaks
510      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
511      - global_ocean_ebm: adjoint still needs fix (TLM ok)
512      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
513      - carbon: * remove tr1-related adjoint verification
514                * add ptracer as control variable
515    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
516      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
517    
518    checkpoint54f_post
519    o in verification/carbin/ remove experiment related to
520      ALLOW_PASSIVE_TRACER (array tr1 etc)
521      code_ad/ input_ad/ results_ad
522    
523    o add two new packages
524      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
525        + subject to optimization (memory)
526      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
527        + subject to reordering (many GOTOs in the original code)
528        + so far opps is called for every (i,j) point, and then operates in
529          the vertical; one may want to reorder the scheme in order operate in
530          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
531          fields)
532    o overhaul of IO so that we now have flags for MDSIO and/or MNC
533      - all verification tests compile and run with linux_ia32_g77
534      - defaults are compatible with current input files--nothing
535        should change if you were not previously using MNC
536      - MNC output has been added in numerous places (eg. timeave)
537        but there are still a few writes not yet do-able with MNC
538        (this is in progress)
539      - flags now allow for either/or/both use of MDSIO and MNC and
540        documentation will soon follow
541      - numerous small formatting cleanups for ProTeX
542    o add version info (via BUILD_INFO.h) to MNC and stdout
543    
544    checkpoint54e_post
545    o add two new packages
546      - pp81 (Packanowski and Philander, 1981), Richardson number and
547        stratification dependent mixing
548      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
549      - these scheme operate in a similar manner as KPP (without ghat, of
550        course), however there is only one diffusivity that is used for both
551        temperature and salinity (and passive tracers)ç
552    o add offline package
553    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
554      provided by Stephanie Dutkiewicz
555    o genmake2: add ability to search for C compilers and cleanup test output
556      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
557    
558    checkpoint54d_post
559    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
560    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
561      leading to additional shift by 5 days each year of integration
562       (i.e. leading to considerable offset over the years)
563    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
564    o start with no AB and no initial filtering (staggerTimeStep):
565      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
566    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
567      (external loading & cpl import/export stay in forward_step.F)
568    o update coupling interface to work with new staggerTimeStep
569    o change MDSIO ptracers_pickup.
570    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
571    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
572    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
573    
574    checkpoint54c_post
575    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
576      this affects (truncation error) output.txt of test-exp:
577       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
578    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
579    o change Qnet to always be the net heat flux, (+upward).
580      affects (truncation error) output of natl_box exp.: updated
581    o define the max number of passive tracers in PTRACERS_SIZE.h
582    o start to test mnc routinely in exp0
583    o add sea-ice loading (sIceLoad) as a new forcing field.
584    
585    checkpoint54b_post
586    o add testreport "-j JOBS" option for parallel builds (tested and pretty
587       impressive on Altix and Opteron systems)
588    o diagnostics can now write NetCDF files through the mnc package
589    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
590    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
591    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
592      affects (truncation error) output of lab_sea & natl_box exp.: updated
593    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
594    
595    checkpoint54a_post
596    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
597    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
598    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
599    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
600      + internal_wave (shift in writing cg2d_ini_res)
601    checkpoint54a_pre
602    
603    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
604      - modified verification/lab_sea and natl_box_adjoint accordingly
605    
606    checkpoint54
607    checkpoint53g_post
608    o prepare splitting of thermodynamics: store convect.counter in common block
609    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
610      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
611    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
612    o new parameter "nShapS": allow to treat differently S from T (nShapT)
613    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
614    o restore adjointability
615    
616    checkpoint53f_post
617    o modifications that affect AIM experiment results (update output.txt):
618      - no advection of S at top interface Nr (pkg/generic_advdiff)
619      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
620    o AIM pkg:
621      - include stability function into surf.Flux derivative relative to Tsurf
622      - calculate clear-sky radiation & surface temp. change (for diagnostics)
623    
624    checkpoint53e_post
625    o merged cylindrical coord configuration
626    o added rotating_tank experiment
627    checkpoint53e_pre
628    
629    checkpoint53d_post
630    o faulks upgraded: re-generate output.txt that have changed:
631       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
632    o Added Bryan and Lewis, 1979, vertical diffusivity profile
633    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
634    o added Sadourny discretization of Coriolis
635      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
636      - re-enabled use of omega3 (useAbsVorticity)
637    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
638      vector-invariant equations
639      - note: does *NOT* yet use same variable visc. for no-slip BC's.
640    o recoded the lateral boundary conditions for non-hydrostatic w, this time
641      hopefully without new bugs
642      - still to do: biharmonic friction for non-hydrostatic w
643    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
644    o regenerated output for global_ocean_ebm (using -ieee)
645    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
646      of mom_common/
647      - simple re-arrangement of instructions within computing loop
648    checkpoint53d_pre
649    
650    checkpoint53c_post
651    o new version of coupler for AIM+thSIce and Ocean models
652     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
653     - land: change Evaporation of snow
654     - aim with thSIce: fix bug in snow-precip.
655    o changes to calc_gw.F
656     - bug fix for w^2 term near the bottom boundary
657     - (hopefully) improve the lateral slip boundary condtions for use with
658        partial/looped cells
659      - because the bug fix changes two verification experiments anyway (exp5
660        and plume on slope), change the lateral boundary condition from half slip
661        to the value of no_slip_sides
662    o ebm package wasnt quite up to the parallel task. Fixed that.
663    o Adjoint of EBM package + verification
664      * TLM OK
665      * ADM not sufficient accuracy yet (needs further testing)
666    
667    checkpoint53b_post
668    o Commiting new energy balance model to repository
669      * package is pkg/ebm
670      * verif. is verification/global_ocean_ebm
671      * references are in ebm_driver.F
672    C      * X. Wang, P. Stone and J. Marotzke, 1999:
673    C        Global thermohaline circulation. Part I:
674    C        Sensitivity to atmospheric moisture transport.
675    C        J. Climate 12(1), 71-82
676    C      * X. Wang, P. Stone and J. Marotzke, 1999:
677    C        Global thermohaline circulation. Part II:
678    C        Sensitivity with interactive transport.
679    C        J. Climate 12(1), 83-91
680    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
681    C        Destabilization of the thermohaline circulation
682    C        by atmospheric eddy transports.
683    C        J. Climate 7(12), 1870-1882
684    o Will need long integration testing.
685    checkpoint53b_pre
686    
687    o created pkg/mom_common in preparation for variable viscosity code
688    o renamed and split ini_mnc_io
689    o pkg/land: only liquid water can diffuse or run-off
690    o AIM using land: soil wetness availability account for snow
691    o added printMapIncludesZeros to EEPARMS namelist
692    
693    checkpoint53a_post
694    o restore TAMC compatiility for exf_constants.h
695      (no usage of _d in .h)
696    o Additional storing in KPP in an attempt to fix
697      TAMC problem with adjoint of KPP code.
698      (no success...)
699      Identical code works fine with TAF.
700    o Fixed verification/natl_box_adjoint experiments.
701      Initial conditions for Experiments 4 and 5 are now
702      set to "SEAICE_initialHEFF=0", which is more reasonable,
703      and hence gives results closer to that of Experiment 2.
704      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
705    
706    checkpoint53
707    o stable checkpoint with up to date adjoint
708      TLM tests only run for 1st grdchk at the moment. Its unclear if
709      this is a code problem or a problem with resetting code for g_
710      variables that is being autogenerated wrong.
711      Otherwise:
712       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
713       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
714         are both still in chaos following their security messes.
715    
716    checkpoint52n_post
717    o various build (mostly genmake2) changes including:
718      - ability to build/run more easily within Cygwin and MacOS X
719      - more complicated Makefiles with a stronger dependence on Gnu Make
720    o pkg/seaice modifications
721      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
722        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
723        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
724      - changed proxy for geostrophic velocity and updated
725        verification/lab_sea/results/* accordingly
726      - removed ADI dynamic solver from pkg/seaice
727      - replaced all occurrences of 1/CSTICE or 1/CSUICE
728        they caused a segmentation fault under certain circumstances
729      - removed unused field WATR
730    o bug fix in exf-package:
731      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
732         now reflect that.
733    o small fixes in the cal-package:
734      - set reference date to first of January for the 'model'-calendar
735      - failing of cal_CheckDate in cal_FullDate now actually results in a
736        warning
737    o small modifications in exf-package to increase flexibility:
738      - change climtempfreeze from a constant to a runtime parameter that
739        is specified in data.exf_clim (default = -1.9)
740      - introduce runtime parameter windstressmax (default = 2.0) that is
741        specified in data.exf
742    o fix in pkg/thsice:
743      - update Evap (Tsf changes) to be consistent with Latent heat flux
744      - maintain snow precipitation unchanged (even if Tsf >=0).
745     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
746    
747    checkpoint52m_post
748    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
749      this does not change any of the results, because myIter=0 in swfrac always
750      lead to jwtype=2 (the default anyway), but the call makes little sense
751      as a default
752    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
753    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
754      atmospheric model (AIM) to use it ; add a "slab ocean" component.
755    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
756    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
757    o extending useSingleCpuIO option to work with new exch2 I/O format
758      - old-style, missing-tile I/O is still accessible by defining CPP
759        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
760    o monitor package can write to NetCDF files and/or STDOUT
761    o fix re-definition bug in MNC_GRID_INIT_ALL()
762    o doc/api_reference added
763      - a framework for building an API Reference Manual using all
764        the "protex" comments embedded in the code
765      - see pkg/generic_advdiff, pkg/mnc for examples
766    o MNC:
767      - make myThid the last argument for all subroutines
768      - new default for the grid files: NO halos
769      - add useMNC and other run-time flags
770      - separate per-file-group handling of the unlimited dimension
771      - early initialization of MNC w/ flags read at the eeboot stage
772        and lookup tables set in initialize_fixed
773      - write all MNC output to a freshly-created directory
774    o thermodynamics sea-ice (thsice) is now tested with testreport.
775    o test exp. advect_cs: use the standard cs32 grid ; update output.
776    o Added functionality to grdchk:
777      pick global i,j,k position (or nearest wet) where to perform check.
778    
779    checkpoint52l_post
780    o new land formulation:
781      a) use ground enthalpy as prognostic variable to ensure exact
782         energy conservation.
783      b) account for water temperature and for latent heat of freezing
784         in all processes (rain, run-off, ground storage)
785      c) compute surface and ground temperature implicitly.
786    o aim_v23 modification for new land model:
787      a) Treat separately land / ocean / sea-ice surface fluxes
788         to allow implicit computation of land & sea-ice surface temp.
789      b) add snow precipitation.
790    checkpoint52l_pre
791    
792    o fix problem (when 1 tile is empty) in min/max monitor.
793    o fix bug in timeAve (u,vZetatave in common block)
794    o no restoring terms under ice for pkg/seaice
795    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
796    o bug fix for pkg/seaice pickups
797    o change MNC call locations and add coordinate attributes
798    o mask vorticity at the corner ; affects global_ocean.cs output
799    o fix ini_curvilinear_grid ; test CS experiments with mpi
800    o aim.5l_cs: modify sea-ice fraction input file ; update output
801    o exf: Adding simple range check routine for exf fields after read
802    
803    checkpoint52k_post
804    o removed top-level directory "diags"
805      - we migrated these functions to pkg/timeave a long time ago
806    o fixed bug introduced in pkg/monitor
807    o accuracy ctrlprec = 32 insuffient for gradient checks using
808      averaged fields (I/O via cost_averages)
809      -> use ctrl.h in active_file*.F to control I/O precision.
810    o paramter list of CALL ADTHE_MAIN_LOOP
811    o added initial do_the_model_io to ecco
812    o set all ...Freq to zero after cost_final
813      taveFreq, dumpFreq, pChkptFreq
814    o MAIN and ECCO differentiability restored
815    
816    checkpoint52j_post
817    o fix nchklev in tamc.h for global_ocean...
818    o Bringing flow and store directives up-to-date
819    o Really weird thing!
820      call do_the_model_io from the_main_loop with parameters
821      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
822      TAF places a faulty re-call of initialise_varia
823      after cost_final call which should not be there!
824    checkpoint52j_pre
825    
826    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
827      error messages
828    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
829    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
830      debug output
831    o modfied mdsio_writefield.F to handle non-global files under exch2
832    o update AIM Cubed-Sphere exp (aim.5l_cs):
833      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
834    o update AIM Equatorial Channel exp:
835      use standard aim_v23 pkg and change the SST fields to be more realistic.
836    o globalFile now works with exch2
837    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
838      mon_vort3.F to make exch2 friendly with >1 tile per cube face
839    o limit timeave output for hi-res integrations
840    
841    checkpoint52i_post
842    o removed CPP_EEOPTIONS.h from verification/*/code
843    o updated the tiling for global_ocean_pressure
844    checkpoint52i_pre
845    
846    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
847      the old pkg/aim).
848    
849    checkpoint52h_pre
850    o shortened offending lines in exch2_send_rx?.template
851    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
852    o genmake2: add build & execute test for NetCDF code
853    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
854      old grid files, moved CPP_EEMACROS.h to pkg/exch2
855    o added useSingleCPUIO flag to monitor.F and mon_out.F
856    o added temporary hack for sea-ice dynamics on the cube:
857      metric terms are ignored and it is assumed that
858      there is no sea-ice on cube faces 1, 2, 4, and 5.
859    
860    checkpoint52f_post
861    o added exch2 cube routines to pkg/exch2
862    o modified hs94.cs-32x32x5 to use it
863    o added new grid files to hs94.cs-32x32x5
864    checkpoint52f_pre
865    
866    checkpoint52e_post
867    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
868      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
869    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
870      to work with implicit vertical advection and AB ;
871    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
872    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
873     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
874    checkpoint52e_pre
875    
876    o fix bug in impldiff when Nr=1 or Nr=2.
877    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
878    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
879    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
880      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
881    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
882    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
883    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
884    
885    checkpoint52d_post
886    o re-tiled many expts to allow comparison in multi-processor mode
887      - updated output accordingly
888      - changed hs94.128x64x5 to use intial T from file rather than use the
889        random number generator
890    o add infrastructure in model routines for fizhi and gridalt packages
891    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
892    o changes to permit hi-res, cubed-sphere, configuration
893      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
894      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
895      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
896        of surface winds for the cube
897      (A verification experiment, based on global_ocean.cs32x15, but with
898       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
899       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
900       complete with example surface forcing files and matlab scripts to look
901       at the output and compare it with that of global_ocean.cs32x15.)
902    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
903       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
904       to conform to the common rule.
905    o check-in the first version of the coupler + interfaces for multi-components
906       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
907       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
908       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
909       - ocean and atmos. share the same horizontal grid (no interpolation).
910       - exchanges between component and coupler is done in forward_step
911    o new verification experiment, cpl_aim+ocn:
912       coupled ocean - AIM atmosphere on cs32 grid.
913    
914    checkpoint52d_pre
915    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
916    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
917    
918    checkpoint52c_post
919    o Fixing OPTIONS files for use of exf:
920      - ALLOW_ECCO not needed
921      - ECCO_CPPOPTIONS.h should not be included from
922        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
923        as has been the case in the past
924      - All cal/exf related options are currently set in
925        single header file. Should remain so until we
926        agree on a consistent new policy.
927    o Removed all CPP options for cal package.
928      cal has no more CPP options.
929    o modified STOREs in GAD_ADVECTION
930    o corrected key comp. for passkey
931    
932    checkpoint52b_post
933    o new version: "thsice" of thermodynamic sea-ice pkg:
934     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
935     - modify fluxes but do not change theta directly;
936     - light cleaning of bulk_force pkg (still needed with thsice).
937     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
938       + output_thsice.txt to test thsice & bulk_force pkgs.
939    o put back grid & coriolis monitor output.
940    checkpoint52b_pre
941    
942    o call "do_the_model_io" at the beginning (=> dump initial state)
943    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
944    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
945      (need info on NUMBER_OF_PTRACERS)
946    o missing PTRACERS headers in some routines
947    o default tamc.h in pkg/autodiff supposed to crash
948      to ensure proper customization
949    
950    checkpoint52a_post
951    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
952      - moved surfaceTendencyTice from pkg/seaice to main code
953      - subroutine FREEZE_SURFACE now limits only surface temperature
954        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
955        => new output.txt for global_ocean.cs32x15 & global_with_exf
956      - keep the old version of FREEZE for backward compatibility;
957        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
958      - corresponding modifs for TAF directives
959    o added surface flux output variables to TIMEAVE_STATVARS
960    o time-averaged output for pkg/ptracers
961    o fix problem with ECCO-related divided adjoint
962      snapshot file was missing some ad-variables,
963      but no warning issued by TAF
964    
965    checkpoint52a_pre
966    o some bug fixes for #undef REAL4_IS_SLOW
967    
968    checkpoint52 = ecco_c52_e35
969    o after testing adjoints of checkpoint51u_post
970    
971    checkpoint51u_post
972    o this is the post-merge tag of the ecco-branch
973      (needs another clean checkout and re-testing)
974    o various natl_box_adjoint configs and results
975      but no input fields
976    o obcs adjoint not yet merged!
977    o adding ECCO global 1x1 and 2x2 degree configs
978    o updated/extended some store directives for seaice
979    o pkg/ecco now containes ecco-specific part of cost function
980    o top level routines the_main_loop, forward_step
981      supersede those in model/src/
982      previous input data.cost now in data.ecco
983      (new namelist ecco_cost_nml)
984    o in ctrl/ cleaned some cross-dependencies and updated CPP options
985    
986    checkpoint51t_post
987    o this is the pre-merge tag of the ecco-branch
988    
989    checkpoint51s_post
990    o cleanup: removed various obsolete #define-s
991    o pkg/grdchk
992      - renamed 'ph-grd 3' to 'grad-res'
993      - merged from ecco-branch
994        (remaining bug fixes for obcs gradient checks)
995      - additional high-precision output for testreport
996        (grep for 'precision_grdchk_result')
997    
998    checkpoint51r_post
999    o cleaned up or removed CPP_OPTIONS.h files
1000    o updated results for some of the tests to reflect the new
1001      optfiles (-ieee: -O0 instead of -O3)
1002    
1003    checkpoint51q_post
1004    o cd_code:
1005      - moved cd_scheme.F -> cd_code_scheme.F
1006      - separate read_checkpoint from cd_code_ini_vars.F
1007      - separated cd_code part from write_checkpoint
1008      - updated AD_SOURCE, generated .flow
1009      - added CD_CODE_VARS.h to the_main_loop
1010      - Moving cd_code specific store dir.s to pkg/cd_code
1011    o ctrl package totally restructured
1012      - pack/unpack now optional and decoupled from
1013        xx_/adxx_ I/O
1014      - ctrl_pack/unpack cleaned
1015        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1016      - confined inclusion of AD_CONFIG.h to where necessary.
1017    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1018    
1019    checkpoint51p_post
1020    o create initial cd_code package
1021      - WARNING: the initialization of fields within packages
1022        is broken because INI_FIELDS (where READ_CHECKPOINT is
1023        called) is called *before* PACKAGES_INIT_VARIABLES.
1024        This seems to be backwards since
1025        1) its important to initially zero the entire field including
1026           the "halo" region
1027        2) zeroing needs to be done *before* reading pickup info
1028           and the pickup call might or might not happen in any
1029           particular run
1030      - this needs an overhaul for R2
1031    o cleanup verification/*/code/GMREDI_OPTIONS.h
1032    o cleanup testreport
1033    
1034    checkpoint51o_post
1035    o bringing AD-related verif's up to date with genmake2
1036      - carbon/
1037      - global_ocean.90x40x15/
1038      - hs.94.1x64x5/
1039      - (front_relax/ )
1040    o (more) consistent directory structure for AD-related verif.'s
1041    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1042    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1043    o bug fix in find_alpha.F for MDJWF:
1044      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1045        change rho -> rho-rhoConst
1046      - replace call find_rho to find_rhonum
1047    o initialisation of rFlx extended to full array (required by TAF)
1048      and shifted to thermodynamics
1049    o removed PTRACERS.h in ptracers routine
1050    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1051    o Correcting initialisations for fVerU, fVerV.
1052    o helping TAF to recognize dependency on kUp for
1053      fVerU, fVerV
1054    o Replacing delZ by delR in pkg/ctrl/
1055    checkpoint51o_pre
1056    
1057    o undid all of cp51 pending some cleanups and discussion
1058    o added the [#include "AD_CONFIG.h"] statement to all files that need
1059       it for adjoint/tl #defines
1060     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1061     o removed tools/genmake since it no longer works
1062    
1063    checkpoint51n_post
1064    o modifications to make FREEZE flux visible to pkg/kpp
1065      - moved surfaceTendencyTice from pkg/seaice to main code
1066      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1067      - subroutine FREEZE now limits only surface temperature
1068        (this means new output.txt for global_ocean.90x40x15,
1069         global_ocean.cs32x15, and global_with_exf)
1070    o added surface flux output variables to TIMEAVE_STATVARS
1071    
1072    checkpoint51n_pre
1073    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1074    o added [#include "AD_CONFIG.h"] to all files that use the following
1075      defines:
1076      - ALLOW_ADJOINT_RUN
1077      - ALLOW_TANGENTLINEAR_RUN
1078      - ALLOW_ECCO_OPTIMIZATION
1079    
1080    checkpoint51m_post
1081    o incorporating changes to get TAMC/TAF working in genmake2
1082      - added new TAMC/TAF targets to the Makefile
1083      - various cleanups related to package handling
1084      - these changes should have no impact on the forward model
1085    
1086    checkpoint51l_post
1087    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1088     - faster algorithm for cal_addtime.F
1089     - higher precision arithmetic, where needed
1090     - pkg/exf *startdate variables changed from calendar date to
1091       model integration time
1092    
1093    checkpoint51l_pre
1094    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1095    o enable to apply restoring on S & T only in a latitude band.
1096    o update output (external_forcing_surf modif. change truncation errors)
1097       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1098    
1099    checkpoint51k_post
1100    o change default to: useNHMTerms=.FALSE.
1101     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1102       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1103     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1104        exp1, ideal_2D_oce
1105     - change data file of oceanic exp (leave the results unchanged for now)
1106       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1107    o set gravitySign automatically according to the vertical coordinate used
1108      (and change sign: back to "logical" value: +1 when R increases downward)
1109    o added an include barrier to the default CPP_OPTIONS.h and
1110      removed the #include "PACKAGES_CONFIG.h" from it
1111    o fix a bug in mom_fluxform (from chk51j_post)
1112    
1113    checkpoint51j_post
1114    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1115    o adjusted some flow directives (dynamics, thermodynamics)
1116    o added cubed-sphere case to test cost function
1117    o heckpoint_lev?_directives.h now include
1118      pkg-specific directives, whenever those are enabled.
1119    o Moving pkg-specific flow directives to corresponding pkg
1120      Moving pkg-specific differentiation list to corresponding pkg
1121      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1122      ---> conventions are
1123           - pkg_ad.flow
1124           - pkg_ad_diff.list
1125           - pkg_ad_check_lev?_dir.h
1126    
1127    checkpoint51i_post
1128    o merge of the branch-genmake2
1129      - knowingly breaks the older genmake
1130      - automatic generation of all ALLOW_${PKG_NAME} defines
1131      - new testreport supersedes older testscript
1132    o large number of package inclusion and header cleanups
1133    checkpoint51i_pre
1134    
1135    o new output for adjoin of global ocean vector invariant
1136    o fix for checkpoint of thermodynamic seaice and bulk_force
1137    o Steph gchem various cleanups
1138    
1139    checkpoint 51h_pre
1140    o fixed some single quotes
1141    o modify gchem pkg to be more versatile
1142    o modifications to clean up dic pkg
1143    o add pkg/cfc
1144    
1145    checkpoint51g_post
1146    o provide links for ARPACK and ADM*TLM
1147    o start removing verification/vero/
1148    o update AD-related stuff
1149      (in particular some IF-statements in model/src/ routines)
1150    o adding to verification/global_ocean.90x40x15/ adjoint of
1151      vector invariant setup
1152    
1153    checkpoint51f_post
1154    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1155    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1156      of tracer Green's fucntions for ocean inversion project.
1157    
1158    checkpoint51f_pre
1159    o Added on-the-fly spatial interpolation capability
1160        "USE_EXF_INTERPOLATION" to pkg/exf.
1161      - This is a temporary Cartesian-grid hack until
1162        the super-duper ESMF coupler becomes available.
1163      - See verification/global_with_exf/README for usage example.
1164      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1165        flags and modified pkg/seaice accordingly.
1166    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1167        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1168        non-local transport term.
1169    
1170    checkpoint51e_post
1171    o pkg/mom_vecinv:
1172      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1173      - add time-ave diagnostic of vorticity advection.
1174    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1175    o atmospheric geopotential: - include water vapor effect;
1176                                - use p^kappa in p* scaling.
1177    o land pkg: read initial state from files.
1178    o AIM : add stratospheric drag in the upper level
1179    
1180    checkpoint51d_post
1181    o change function ILNBLNK (=> last non-blank char.) to return zero
1182      (instead of the string length) when the string. char is empty
1183    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1184    o modif's to restore TAMC compatibility
1185      - avoid "_d" constructs in PARAMETER declarations
1186      - avoid interrupting lines by comment lines
1187    o Use cluster local disks for purely local I/O
1188      vs. globally visible disks needed for ctrl stuff
1189      (merged from ecco-branch)
1190      - new active_file_loc... and mdsio_..._loc routines
1191      - affected packages: autodiff, ctrl, grdchk, mdsio
1192    
1193    checkpoint51c_post
1194    o introducing integer flag debugLevel
1195      - debLevZero: suppress all output
1196      - debLevA: standard
1197      - debLevB: equivalent to current debugMode=.TRUE.
1198    o introducing pathname variable mdsioLocalDir for mdsio
1199      that can be specified at runtime
1200      (relevant for cluster I/O to local disk)
1201    `
1202    >>>checkpoint51b_post
1203    adjoint of ptracers
1204    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1205    o extended state in checkpoint_lev?, etc.
1206    o alternative ctrl/cost with tr1 or ptracer
1207    o new comlev1_bibj_ptracers
1208    o new ptracers.flow
1209    o made ptracers_forcing same as external_forcing_s
1210    o added verification for adjoint with ptracers
1211      - adm. grdchk fail so far
1212      - tlm. grdchk OK
1213      - checked tapelev/comlev recomputations: OK
1214    <<<checkpoint51b_pre
1215    
1216    checkpoint51a_post
1217    o added code for biogeochemistry package
1218      - new pkgs: dic, gchem
1219      - new subroutine in ptracers
1220    o modify code for biogeo packages
1221      - in model/src and pkg/ptracers
1222    
1223    checkpoint51
1224    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1225      - autodiff, ctrl, exf, grdchk, seaice
1226      kept separate packages
1227      - cost, ecco, obcs
1228    o updating verification/internal_wave, verification/lab_sea
1229      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1230    
1231    checkpoint50i_post
1232    o Preparing next differentiable checkpoint and sync
1233      of MAIN vs. ecco-branch
1234      - 1st step: this one is differentiable
1235      - 2nd step: next(! not this) checkpoint will have updated packages
1236                  from ecco-branch)
1237    
1238    checkpoint50h_post
1239    o new package "land": provide surface BC for AIM.
1240    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1241    o AIM: use true log-P extrapolation for near surface temp (= as in
1242        F.Molteni paper) ; update aim.5l_cs output.
1243    o New variable in PARM03 for more flexible pickups
1244    o somewhat cleaned package initialisation sequence for
1245      ctrl/ cost/ ecco/ in packages_... routines
1246    
1247    checkpoint50g_post
1248    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1249      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1250      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1251        made the default because of faster convergence than ADI
1252    
1253    checkpoint50f_post
1254    o exf totally restructured
1255      - replaced all exf_set_ routines by one generic exf_set_gen.F
1256        and made sure it's still differentiable
1257      - split exf_getffields.F into new exf_bulkformulae.F
1258      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1259      - updated adjoint/makefile and relevant verif. accordingly
1260    
1261    checkpoint50f_pre
1262     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1263          + change Evap over land. (update aim.5l_cs output)
1264     o added missing .cvsignores and made uniform across expts
1265     o changed configuration of tidal_basin_2d expt
1266     o added pkg/debug functions for tracing code in fatal crashes
1267     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1268     o new fn in pkg/monitor to stop model if solution grows too big
1269     o removed lots of single quotes from comments
1270    
1271    checkpoint50e_post
1272    o make KPP work with PTRACERS
1273     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1274       nearly a copy of kpp_transport_s
1275     - there is no analogue to SurfaceTendencyS, so I have to use
1276       gPtr(of the surface layer) instead
1277    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1278    checkpoint50e_pre
1279    
1280    checkpoint50d_post
1281    o change kpp output from multiple-record state files to single-record state
1282      files analogous to write_state.F
1283    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1284      analogous to the cg2d-related output.
1285    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1286      so that writing to internal file fn (with length 512) fails.
1287    checkpoint50d_pre
1288    
1289    checkpoint50c_post
1290    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1291    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1292    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1293    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1294    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1295    
1296    checkpoint50c_pre
1297    Merging from release1_p13:
1298    o bug fix for pkg/seaice dynamic solver
1299    o Added SEAICE_initialHEFF to pkg/seaice
1300    
1301    checkpoint50b_post
1302    o store u*,v* in gU,V instead of in guNm1,gvNm1
1303    o in order to put the momForcing out of the Adams-Bashforth:
1304      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1305      to timestep.F
1306    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1307    o re-generate output for highly sensitive test-exp:
1308       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1309    
1310    checkpoint50b_pre
1311    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1312    o corrected CPP option mismatch in exf_Bulk... functions for case
1313      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1314    
1315    checkpoint50a_post
1316    o Bug fix for merging between c50 and KPP.
1317      ikey was passed from thermodynamics to kpp_calc via
1318      common block rather than being recomputed in kpp_calc,
1319      in contradiction with new key itdkey.
1320      New key ikppkey created, and tamc.h headers updated.
1321    
1322    checkpoint50
1323    - 2nd step of merge with ecco-branch:
1324      merge changes in ecco-branch back into main trunk
1325    - bug fix in find_alpha
1326    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1327    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1328    - merged some sliced AD support routines
1329    
1330    checkpoint49
1331    merged from ecco-branch:
1332    o exf:
1333      - Enable initialisation of forcing fields to constant
1334        (runtime) values.
1335      - in exf_getffields.F
1336        Reduce i-/j-loop to interior domain, discarding overlaps.
1337        That also fixes wrong TAF-key computations for key_1, key_2
1338        with bulf formulae.
1339      - exf_init.F modify #ifdef for exf_init_evap
1340      - exf_getffieldrec.F, ctrl_getrec.F
1341        The following INT-usages are not safe:
1342          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1343          fldcount = int(fldsecs/fldperiod) + 1
1344        and were modified.
1345    o autodiff: checkpoint_lev...
1346      - updated storing for bulk formulae (some arrays were missing)
1347      - added state for seaice package
1348      - synchronized with main branch
1349    o DIVA:
1350      Modif.s in
1351      - the_main_loop.F
1352      - the_model_main.F
1353      and added cost_final_restore.F cost_final_store.F
1354      o With these changes, it is possible to fully separate
1355        the first forward run to compute the cost function (mdthe_main_loop)
1356        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1357        into separate model executions.
1358        This enables better tuning of DIVA to given queue sizes.
1359      o Loss of cost function value in consecutive DIVA runs is
1360        fixed by storing to 'costfinal' file.
1361      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1362        beginning/end of adjoint integration is accounted for.
1363      The current changes apply to TAF-1.4.26.
1364      TAF has one remaining bug, requiring one manual change
1365      (see MITgcm manual).
1366    o cal: synchronized between MAIN and ecco-branch
1367    
1368    checkpoint48i_post
1369    o Changes to restore differentiability of code w.r.t. previous tag
1370      (mostly adding new routines to make list and replacing
1371      pressure by totPhiHyd).
1372    o Updated and merged grdchk package
1373      - has both ADM and TLM checks
1374      - works for single- and multi-proc.
1375      - output cleaned
1376      - worked successfully for parallel DIVA
1377    o genmake:
1378      - Adding -platform=SP4
1379      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1380    o Modif. for DIVA:
1381      ctrl_unpack should not be called in intermediate DIVA interval.
1382      (similar thing would apply for active files such as
1383      tbar, sbar, psbar, which should not be reinitialised;
1384      only relevant for ecco-branch)
1385    
1386    checkpoint48h_post
1387    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1388    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1389    o Added SEAICE_initialHEFF to pkg/seaice
1390    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1391    
1392    checkpoint48g_post
1393    --- EOS:
1394    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1395      store total Potential in totPhyHyd for diagnostics & EOS.
1396    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1397    --- Pressure/geopotential gradient:
1398    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1399    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1400      ( changes results of global_ocean_pressure )
1401    o NLFS + z-coord.: add eta*Rho' contribution.
1402    o accurate phiHyd when using interface-W at the middle between 2 centers
1403     ( changes results of ideal_2D_oce )
1404    o includes r* 2nd term in potential gradient.
1405    
1406    checkpoint48f_post
1407    Merging from release1_p12:
1408    o Modifications for using pkg/exf with pkg/seaice
1409      - improved description of the various forcing configurations
1410      - added basic radiation bulk formulae to pkg/exf
1411      - units/sign fix for evap computation in exf_getffields.F
1412      - updated verification/global_with_exf/results/output.txt
1413    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1414      (SBO) core products, including oceanic mass, center-of-mass,
1415      angular, and bottom pressure (see pkg/sbo/README.sbo).
1416    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1417      to avoid negative values in shallow regions.
1418      - updated verification/natl_box/results/output.txt
1419      - updated verification/lab_sea/results/output.txt
1420    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1421    o Added useSingleCpuIO option (see PARAMS.h).
1422    o Updated useSingleCpuIO option in mdsio_writefield.F to
1423      work with multi-field files, e.g., for single-file pickup.
1424    o pkg/seaice:
1425      - bug fix in growth.F: QNET for no shortwave case
1426      - added HeffFile for specifying initial sea-ice thickness
1427      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1428    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1429      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1430    o pkg/seaice:
1431      - adjoint-friendly modifications
1432      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1433    
1434    checkpoint48e_post
1435    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1436    o dynamics: change definition of computational domain & adapt mom_fluxform
1437      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1438    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1439        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1440        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1441        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1442        inverted_barometer solid-body.cs-32x32x1
1443      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1444    
1445    checkpoint48d_post
1446    o in preparation for r*:
1447     a) use pre-computed gradient of hydrostatic potential:
1448        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1449     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1450        => affects results of glob_oce_pressure (different truncation error)  
1451      update output.txt of ideal_2D_oce & global_ocean_pressure
1452    
1453    checkpoint48d_pre
1454    o in preparation for r*:
1455      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1456      pass the 2 comp. of the grad. as arguments to momentum S/R.
1457      but for the moment, only used if it does not change the results.
1458    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1459    
1460    checkpoint48c_post
1461    Modifications in treatment of initial flux forcing controls
1462    to avoid extra storing of flux fields.
1463    
1464    checkpoint48c_pre
1465    o Added tidal_basin_2d experiment (currently 1D!)
1466    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1467    
1468    checkpoint48b_post
1469    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1470     (modification to pressure gradient not yet implemented)
1471    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1472      (for U & V) that are used for vertical advection of momentum.
1473    
1474    checkpoint48a_post
1475    o In preparation for r*, use temp. array to compute vertical transport
1476       in flux-form momentum pkg. => change results of few test-exp.
1477      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1478                        lab_sea, natl_box & plume_on_slope
1479    
1480    checkpoint48
1481    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1482    
1483    checkpoint47j_post
1484    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1485    o moved adexch from forward_step to addummy_in_stepping
1486    o added exch in ctrl_map_...
1487    o aveFreq.=0. at end of cost_final to avoid overwrite in
1488      reverse checkpointing loop
1489    o Yet more changes in gmredi:
1490      * adgmredi_calc_tensor
1491        avoiding all recomputation of gmredi_slope_limit
1492      * adgmredi_x/y/rtransport
1493        added flag for excessive storing to avoid recomp. of
1494        u/v/rtans, dTdx/y/z
1495        -> this is not really necessary and very memory-consuming
1496      * adgmredi_slope_psi:
1497        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1498      * gmredi_slope_limit
1499        re-activated full calculation of taperfct for case 'ac02'
1500    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1501    
1502    checkpoint47i_post
1503    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1504    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1505      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1506    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1507    o gmredi: fix few bugs.
1508    
1509    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1510    This will be a good checkpoint to plug into the ecco-branch.
1511    o few modif.'s to get latest version adjointed
1512      (mainly kick out code in ini_linear_phisurf)
1513    o modif's to run adjoint with exactConserv
1514    o case GM_BOLUS_ADVEC should be cleaned
1515      S/R gmredi_slope_psi should be cleaned
1516    o verification/carbon now has exactConserv=.TRUE.
1517    
1518    checkpoint47g_post
1519    o time-average AIM output: becomes independent from statvars time-average
1520      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1521    o After TAF bug fix:
1522      Tested adjoint of gmredi package.
1523      Tests were done with checkpoint47 rather than with latest
1524      checkpoint47f_post since the latter is broken for the adjoint
1525      verification/carbon/ contains both ADM and TLM gradient checks.
1526    Here they are, before they get changed/lost/stolen.
1527    Mostly modif.'s to fix numerical sensitivities.
1528    Gradient checks OK for
1529    - GM_taper_scheme:
1530      * clipping
1531      * ac02
1532      * linear
1533      * glw91
1534      * dm95
1535      * ldd97
1536    - GMREDI_OPTIONS:
1537      * GM_VISBECK_VARIABLE_K
1538      * GM_NON_UNITY_DIAGONAL
1539      * GM_EXTRA_DIAGONAL
1540      * GM_BOLUS_ADVEC
1541    in conjunction with data.gmredi parameters to be checked in
1542    in a few minutes under verification/carbon/code/
1543    
1544    checkpoint47f_post
1545    Merging from release1_p10:
1546    o modifications for using pkg/exf with pkg/seaice
1547      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1548        and SEAICE_EXTERNAL_FLUXES
1549      - pkg/exf CPP options EXF_READ_EVAP and
1550        EXF_NO_BULK_COMPUTATIONS
1551      - usage examples are Experiments 8 and 9 in
1552        verification/lab_sea/README
1553      - verification/lab_sea default experiment now uses
1554        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1555    
1556    checkpoint47e_post
1557    o created a tag prior to creating a branch
1558    
1559    checkpoint47d_post
1560    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1561      at the bottom boundary had an erroneous half slip boundary condition
1562    o added bottom drag and no slip boundary condition capabilities to
1563      oceanic pressure coordinates code
1564    o added new verification experiment global_ocean_pressure, this experiment is
1565      also described in the tutorial section of the manual
1566    checkpoint47d_pre
1567    
1568    checkpoint47c_post
1569    o Added a verification experiment for a global cubed-sphere ocean run
1570      -  verification/global_ocean.cubed32x32x30
1571      -  uses pkg/therm_seaice and pkg/bulk_forcing
1572    
1573    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1574    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1575      when using P-coordinate; only implemented for atmospheric config.
1576    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1577      NOTES: requires option NONLIN_FRSURF to be "#define".
1578    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1579    
1580    checkpoint47b_post
1581    Merging from release1_p9:
1582    o pkg/seaice
1583      - removed GOTO's and added taf directives
1584      - double precision constants to reduce the g77 (Linux)
1585        to F77 (SGI) differences reported in release1_p8
1586    o tools/genmake
1587      - added SGI options
1588    o verification/testscript
1589      - updated to that of checkpoint47a_post
1590    o verification/global_ocean.90x40x15/input/eedata
1591      - modified for SGI f77 compatibility
1592    o verification/lab_sea
1593      - added description of sea-ice model
1594      - added missing matlab routines
1595      - added test of thermodynamics parallelization
1596    
1597    checkpoint47a_post
1598    o new pkg: aim_v23
1599     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1600       for now, keep the same surface forcing as before.
1601     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1602     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1603     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1604    o add diagnostic of surface correction term in monitor output
1605    
1606    o bulk_force and therm_seaice
1607    - Two packages:  bulk_force (Bulk forcing)
1608      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1609    - Earlier integration from Stephaine Dutkiewicz
1610      and Patrick Heimbach.
1611    - Two ifdef statements for compile time,
1612       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1613    
1614    checkpoint47
1615    differentiable version of checkpoint46n_post
1616    o bug fix in quasihydrostaticterms
1617    o * "clean" adjoint code (in terms of extensive recomputations)
1618        can now be obtained for all GMREDI options (i.e. for
1619        - GM_VISBECK_VARIABLE_K
1620        - GM_NON_UNITY_DIAGONAL
1621        - GM_EXTRA_DIAGONAL
1622        - GM_BOLUS_ADVEC )
1623      * However, wrong gradient check problem remains unsolved.
1624      * New CPP options have been introduced for different
1625        tapering schemes
1626    o external_fields_load now part of differentiation list
1627    o pressure needs multiple storing;
1628      would be nice to have store_pressure at beginning or
1629      end of forward_step, e.g. by having phiHyd global (5-dim.)
1630      (NB: pressure is needed for certain cases in find_rho,
1631      which is also invoked through convective_adjustment).
1632    o recomputations in find_rho for cases
1633     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1634    o #define ATMOSPHERIC_LOADING should be differentiable
1635    o ini_forcing shifted to begining of initialise_varia
1636    o Incorporating QNVS line search routines into MITgcm
1637      (this is separate code, and therefore not under pkg)
1638      lsopt/, optim/
1639    o Updated verification/carbon/
1640      - #define GM_VISBECK_VARIABLE_K
1641      - GM_taper_scheme    = 'ldd97'    
1642    
1643    checkpoint46n_post
1644    Merging from release1_p8:
1645    o verification/natl_box:
1646      updating new external_fields_load routine
1647    o New package: pkg/seaice
1648      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1649      The sea-ice code is based on Hibler (1979-1980).
1650      Two sea-ice dynamic solvers, ADI and LSR, are included.
1651      In addition to computing prognostic sea-ice variables and diagnosing
1652      the forcing/external data fields that drive the ocean model,
1653      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1654      The implied surface heat flux is then stored in variable
1655      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1656      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1657      non-local transport term.  Because this call precedes model
1658      thermodynamics, temperature under sea-ice may not be "exactly" at
1659      the freezing point by the time theta is dumped or time-averaged.
1660      N.B.: fairly large differences in accuracy occur across
1661            different platforms/compilers; comparison between
1662            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1663            generated output gives:
1664       T           S           U           V
1665      C D M    c        m  s        m  s        m  s        m  s
1666      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1667      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1668      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1669    
1670      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1671    o GAD:
1672      - generated new common blocks to account for call of
1673        same gad routines with differing traceridentities
1674        (needed to modify tracerIdentity indices in GAD.h)
1675      - generated separate common blocks for case useCubedSphereExchange
1676        (Department of Futurology)
1677      - parameter lists to gmredi_?transport: added tracerIdentity
1678      - added new key indices to tamc.h
1679    o external_fields_load:
1680      - added this routine to TAF list
1681      - needed to make some common blocks global and additional storing
1682        along the same lines as exf package (checkpoint_lev?_directives.h)
1683    o exf:
1684      updated external forcing package
1685      - bug fixes carried over from ecco-branch
1686        (missing OBCS_OPTIONS.h in two routines)
1687      - enable easy to use "no forcing".
1688      - added exf I/O for atmospheric loading
1689      - added exf I/O for runoff data
1690      - transfered scaling between exf <-> MITgcm to exf namelist
1691    o Adding new verification experiment global_with_exf.
1692      This verification experiment is almost identical to the
1693      global_ocean.90x40x15 experiment, except that it uses
1694      the exf (and cal) package instead of the
1695      external_fields_load routine (cf README file).
1696    
1697    checkpoint46m_post
1698    o modified testscript to return -- when there are no lines of "%MON" output
1699    o added new flag "quasiHydrostatic" for QH mode
1700      and new routine quasihydrostaticterms()
1701    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1702      New routine: mom_u_coriolis_nh()
1703    o fixed sign of non-hydrostatic metric terms in u and v equations.
1704      Depend on correct sign of gravitySign.
1705    o added work.pc* to .cvsignore in aim directories using ifc
1706    o introduced flag for controllin non-hydrostatic metric terms
1707    o removed gravitySign from PARM04
1708    o switched to g77/ifc from pgf77 in aim experiments
1709    
1710    checkpoint46l_post
1711    o made convective adjustment work with pressure coordinates:
1712     - changed the direction of k-loop in convective_adjustment.F for the
1713       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1714     - adjusted the reference pressure k-index in convective_adjustment.F
1715     - adjusted the convection condition in convect.F (in analogy to
1716       calc_ivdc.F)
1717     - convective_adjustment no longer computes anything on the halos
1718     - removed the warnings about negative salinity from find_rho.F and
1719       find_alpha.F; instead the new routine look_for_neg_salinity, called
1720       at the beginning of find_rho, find_alpha, and find_beta, does a
1721       check of the entire slice, if CPP-option
1722       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1723    checkpoint46l_pre
1724    
1725    checkpoint46k_post
1726    o fixed the verification/global_ocean.90x40x15 experiment:
1727     - new bathymetry (the world according to A., JMC, and M.)
1728     - new initial fields and forcing fields (*.bin files)
1729     - new POLY3.COEFFS (for the next release one should switch to a full
1730       equation of state: JMD95P or MDJWF)
1731     - fixed several errors and redundancies in the data file
1732     - experiment uses looped cells
1733     - added matlab directory with diagnostic scripts for plotting of output
1734    
1735    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1736     - read AIM physics parameters from a file (data.aimphys)
1737     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1738    
1739    checkpoint46j_post
1740    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1741    o move wVel computation at the end of the time step, in S/R integr_continuity
1742    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1743    o update timeave pkg for wVel diagnostic.
1744    checkpoint46j_pre
1745    
1746    checkpoint46i_post
1747    o Clean up AIM package (and keep the results unchanged):
1748      include CPP_OPTION and use IMPLICT NONE in all routines ;
1749      declare all the variables _RL ; use _d 0 for all numerical constants.
1750      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1751    
1752    checkpoint46h_post
1753    o cleaned up the use of rhoNil and rhoConst.
1754      - rhoNil should only appear in the LINEAR equation of state, everywhere
1755        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1756        and the dynamical equations are all divided by rhoConst
1757    o introduced new parameter rhoConstFresh, a reference density of fresh
1758      water, to remove the fresh water flux's dependence on rhoNil. The default
1759      value is 999.8 kg/m^3
1760    o cleanup up external_forcing.F and external_forcing_surf.F
1761      - can now be used by both OCEANIC and OCEANICP
1762    checkpoint46h_pre
1763    
1764     Added code to convert surface volume flux (fresh water) into
1765     a mass flux when using P coordinates in the ocean (OCEANICP).
1766     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1767    
1768    checkpoint46g_post
1769    o Include a new diagnostic variable phiHydLow for the ocean model
1770      - in z-coordinates, it is the bottom pressure anomaly
1771      - in p-coordinates, it is the sea surface elevation
1772      - in both cases, these variable have global drift, reflecting the mass
1773        drift in z-coordinates and the volume drift in p-coordinates
1774      - included time averaging for phiHydLow, be aware of the drift!
1775    o depth-dependent computation of Bo_surf for pressure coordinates
1776      in the ocean (buoyancyRelation='OCEANICP')
1777      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1778        Theta, Salinity, and Pressure in the parameter list. This routine is
1779        presently contained in find_rho.F. This routine does not give the
1780        correct density for 'POLY3', which would be a z-dependent reference
1781        density.
1782    o cleaned up find_rho
1783      - removed obsolete 'eqn' from the parameter list.
1784    o added two new verification experiments: gop and goz
1785      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1786    checkpoint46g_pre
1787    
1788    checkpoint46f_post
1789    o Enable tangent linear (forward mode) gradient checks:
1790      - extended active file handling to g_... files
1791      - added TANGENT_SIMULATION to theSimulationMode
1792      - extended grdchk package accordingly
1793    o added tangent linear setup in verification/carbon/code_ftl
1794    o added adjoint setup in verification/front_relax/code_ad
1795    
1796    checkpoint46e_post
1797    o Added new equation of state -> MDJWF
1798      - EOS of McDougall et al., 2002, JAOT, submitted
1799      - caveat: the equation of state is only valid for a smaller (more
1800        realistic?) range of values than JMD95P/Z and UNESCO
1801      - added masks to the calculation of pressure in store_pressure
1802      - added more check values for density in check_eos (ini_eos.F), some of
1803        the old check values are out of the range of the MDJWF-eos, so don't
1804        expect perfect matches for those
1805    checkpoint46e_pre
1806    
1807    checkpoint46d_post
1808    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1809      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1810      case of pressure coordinates. eosType='JMD95Z' in
1811      combination with buoyancyRelation='OCEANICP' now causes an error.
1812    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1813      in find_alpha/beta.
1814    checkpoint46d_pre
1815    
1816    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1817      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1818    
1819    checkpoint46c_post
1820    o Changes necessary for ocean in p-coordinates
1821     -  Added new buoyancy relation = 'OCEANICP'
1822     -  Added new parameters = gravitySign (this used to be contained inside
1823        the factor dRdZ which I added when we first switched to R coordinates).
1824     X GM/Redi is not compatible (yet)
1825     X bottom drag and no-slip need to be debugged.
1826    checkpoint46c_pre
1827    
1828    checkpoint46b_post
1829    o Added new equation of state -> JMD95Z and JMD95P
1830      - EOS of Jackett and McDougall, 1995, JAOT
1831      - moved all EOS parameters into EOS.h
1832      - new routines ini_eos.F, store_pressure.F
1833    o Added UNESCO EOS, but not recommended because it requires
1834      in-situ temperature (see JMD95)
1835    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1836      unesco.f to be used with POLY3
1837    checkpoint46b_pre
1838    
1839    checkpoint46a_post
1840    o Added (atmospheric) pressure loading
1841      - new field in FFIELDS.h, etc...
1842      - new cpp flag ATMOSPHERIC_LOADING
1843    o Changed hFacC to _hFacC in calc_phi_hyd.F
1844    o Added SHORTWAVE_HEATING to some files for consistency
1845    checkpoint46a_pre
1846    
1847    checkpoint46
1848    further merges from release1_p5
1849    o new ctrl package
1850      - adopted from ECCO environment to enable optimization
1851      - added Eliassen Palm fluxes to controls
1852    o added Eliassen Palm flux controls to gradient check package
1853    o cost package
1854      - Compatible with new ctrl package
1855      - added Eliassen Palm cost hooks
1856      - modif's of existing cost functions
1857    o Adjoint-related bug fixes in kpp:
1858      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1859      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1860    o autodiff package
1861      - flow directives:
1862        + new for S/R do_the_model_io
1863        + enhanced for S/R checkpoint
1864        + new gmredi.flow
1865      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1866        disable adcommon.h/g_common.h by default.
1867      - fixed problem for adjoint of global_max
1868    o modified verification/carbon/
1869    o New setup for adjoint of global_ocean
1870    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1871    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1872    o incorporated hooks for sponge layer code (external_forcing.F)
1873    
1874    checkpoint45d_post
1875    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1876    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1877      (affects plume_on_slope "cg2d" output)
1878    o add new parameter deltaTfreesurf for free-surface time stepping
1879    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1880  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1881  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
1882  o add new flags:  o add new flags:

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