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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.516 by jmc, Wed Jul 27 21:16:47 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 re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
8      and advect_cs (use EXCH-2 and standard cs-32 grid files).
9    o pkg/exch2: filling of face-corner halo regions is optional
10      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
11    
12    checkpoint57l_post
13     tag before updating tutorials (pre-release-2)
14    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
15       for output and interpolation of input fields onto model grid)
16    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
17       Affects results of exp. rotating_tank ; update output.txt.
18    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
19          and taking the square quantity and/or using a fraction-weight field.
20    o fix aim_diagnostics_init.F mate numbers.
21    o add mnc output capability to diagnostics/diagstat and update
22      our cvsignore files for the ACSII output generated
23    
24    checkpoint57k_post
25    o lab_sea now uses diagnostics package and provides a suite of
26      new EXF diagnostics output.
27    
28    checkpoint57j_post
29    o exf
30      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
31        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
32        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
33      * extended diagnostics output
34        - now includes all EXF variables
35        - hs, hl moved to common block
36        - separate S/R for diagnostics, called after ctrl vector is added
37        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
38        - EXFqnet contains true Qnet (i.e. includes qsw)
39      * updated verif. lab_sea, global_with_exf
40      * Rearranging hflux (exf_mapfields -> exf_getforcing)
41        to ensure that diagnostics sees a true EXFqnet
42    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
43    o diagnostics pkg: change pointers so that 1 diagnostic can be used
44      several times with different frequencies.
45    o mnc-ify the thsice package as requested by Daniel Enderton
46      - the monitor--MNC output needs work
47      - many attributes need to be added (most are currently blank)
48    o mnc-ify theaim_v23 package as requested by Daniel Enderton
49      - many attributes need to be added (most are currently blank)
50    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
51    o add Sadourny like discretization to the 4th.O vorticity advection scheme
52    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
53      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
54         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
55    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
56     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
57    
58    checkpoint57i_post
59    o Diagnostics package was changed: diagnostic allocation is now deactivated
60      by setting an empty file name in the namelist (used to be by setting 0 frequency)
61    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
62      add 1rst Order upwind vertical Shear.
63    o add a quick fix for A/B checkpointing in OFFLINE mode
64    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
65      end-run around the C/Fortran linking horror in eesup/src/timers.F
66    o added pkg/runclock: allows user to terminate run based on wall clock
67    o added non-hydrostatic scaling parameter: nh_am2
68    o pkg/my82: futile attempt to make results compiler-independent by adding
69      some "_d 0", etc. no effect.
70    o for mnc output, fill the 'T' coordinate var with myTime and create a
71      separate 'iter' variable for iteration count
72    o pkg/diagnostics:
73      add new capability: output of Global/Regional & per-level statistics ;
74      tested against monitor output (including land & thSIce) on various exp.
75    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
76    
77    checkpoint57h_done
78      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
79      data.diagnostics, data.gchem, data.ptracers) is done.
80    
81    o pkg/diagnostics: prepare for Global/Regional statistics.
82      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
83    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
84      and rename it: DIFFERENT_MULTIPLE
85    
86    checkpoint57h_post
87    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
88    o pkg/diagnostics: change output frequency, now in seconds (instead
89      of Nb of iterations). This requires to change data.diagnostics.
90    checkpoint57h_pre
91    
92    o in mnc, let the user create the output dir if both mnc_outdir_date
93      and mnc_outdir_num are false
94    o add fflags() to pkg/diagnostics which allows one to specify, on a
95      per-file basis, the file precision [default behavior is unchanged]
96    o added diagnostics to pkg/kpp, including computation of mixed layer
97      depth based on a temperature/density criterion
98    o updated verification/natl_box to test the new pkg/kpp diagnostics
99    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
100    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
101    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
102      not mnc -- this mistake was found by JMC and is now corrected
103    
104    checkpoint57g_post
105    o add Adams-Bashforth 3rd Order time stepping:
106      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
107      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
108    checkpoint57g_pre
109    
110    o make lambda[Theta,Salt]ClimRelax spatially varying
111      (default remains spatially uniform constant based on tau)
112    o added new control variables
113      * init. uVel, vVel, etanN
114      * lambda[Theta,Salt]ClimRelax
115    o separate masks used for ctrl_pack/unpack 'from write_grid' output
116      (suggested by G. Forget)
117    
118    checkpoint57f_post
119    o add parameter "baseTime" = model base time = time at iteration zero
120      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
121      account for baseTime shift
122    o move Coriolis arrays from PARAMS.h to GRID.h
123    checkpoint57f_pre
124    
125    o mnc-ifying the seaice package
126    o introduced an alternative length scale calculation for use in the limiting
127      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
128    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
129    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
130      as well as grad(vort3).  Made it compatible with both approximate form
131      for the cubed sphere and full form of these gradients.  Added flag
132      useFullLeith to select between approximate and full form.  
133    o add "d0" in getcon.F to reduce differences between compilers/platforms
134      update output.txt of exp. fizhi-gridalt-hs
135    o change port_rand funtion to allow to set the seed.
136    o fix obscure MNC bug involving conversion between reals and integers
137      - it caused no problems with certain (eg. gcc, ifc) compilers but the
138        new version is now more standards-compliant
139    o adjoint-related modifications
140      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
141      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
142      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
143    
144    checkpoint57e_post
145    o Adding eddy stress controls a la Ferreira et al.
146    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
147    
148    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
149      update output.txt of exp. fizhi-gridalt-hs
150    o add more "Z" dimensions and associated coordinate vars to MNC
151    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
152    o parameter calendarDumps: when set, approximate months (30-31 days) and years
153      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
154      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
155      months and years.  Requires pkg/cal.
156    o diagnostics: add pickup functionality
157      - off by default for backwards compatibility
158      - current version only uses MDSIO -- MNC will be added
159    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
160    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
161    
162    checkpoint57d_post
163    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
164    o modify verification/ideal_2D_oce so that it tests the creation of mnc
165      output from the diagnostics package
166    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
167    o make genmake2 more portable by using ".$FS" instead of ".f" for more
168      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
169    o add coordinate variables to the MNC output from the diagnostics package
170    o change MNC-flags default value: true when useMNC=TRUE
171    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
172      the ability (off by default) to read the grid information using MNC
173    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
174    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
175    o do snap-shot diagnostics at the middle of the time-interval (instead of
176      at the end).
177    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
178      new test for AIM with thSIce + slab-ocean
179    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
180    o move state variable diagnostics to the beginning of the time step ;
181      (note: still needs some work specially for snap-shot diagnostics)
182      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
183    
184    checkpoint57c_post
185    o Change testing option (-ieee) to get closer agreement between g77 & ifort
186    o generate new output.txt files on faulks with g77 & the new -ieee option
187    checkpoint57c_pre
188    
189    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
190      update output.txt of exp. global_ocean.90x40x15
191    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
192      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
193    o add saltFlux(+File) forcing capability with periodicExternalForcing
194    o allow to use pkg diagnostics for GM-Redi & ThSIce output
195    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
196    o improvements for the MNC output from DIAGNOSTICS:
197      - correct handling of the unlimitied dimension
198      - all dims now have associated coordinate variables
199      - variables located at U, V, and Corner ("Z") points are now written
200        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
201        *all* data points are output
202    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
203    o added pkg/seaice/seaice_monitor.F
204    o mdsio_readfield.F can now read files visible only to master MPI process.
205    o pkg/seaice: some test code for ice-modified ocean stress
206    o exf_getffields interpolation defaults to bilinear for all scalar forcing
207      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
208      spurious negative numbers for precipitation and humidity.  Will cause
209      some small numerical differences for integrations using pkg/exf/exf_interp.F.
210    o pkg/ctrl/
211      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
212        May be enabled via doPackDiag
213      *  introduce z-scaling of
214         + gradient (doZscalePack) and
215         + control (doZscaleUnpack)
216    o pkg/mdsio/
217      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
218      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
219    
220    checkpoint57b_post
221    o simplify options in diagnostics_fill arguments (remove weird combinations)
222    o fix MNC coordinate variables so that they now contain per-face index
223      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
224      general, EXCH2 grids are only aligned to a "local" coordinate system
225    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
226    o Implement instantaneous output within pkg diagnostics:
227      setting a negative frequency in data.diagnostics produces
228     "snap-shot" output (as opposed to time-average if freq > 0)
229    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
230      NOTE: change ptracer diagnostics name: use 2 characters to work with
231            more than 9 tracers. Add also diagnostics of advect & diffus flux.
232    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
233      becomes the coordinate variable for the 'T' dimension
234    o add CF-style coordinate variables to MNC
235      - just a first cut:  numbers are meaningless on the cubesphere and
236        missing along the T axis but otherwise it works!
237    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
238    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
239    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
240      this is based directly on what the model compute, so that the content of
241      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
242    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
243    o clean up build options files for SunOS, in particular
244      - remove -traditional from xmakedepend
245      - change -xarch=v9 to -xarch=native for f77
246      - restore use of make (not gmake)
247      - add CC=gcc if using g77
248    o changes per discussion of AM, JMC, & EH3 today:
249      - move redundant "grid" variables out of "state" -- in preparation of
250        creating proper CF-style coordinate variables and in recognition
251        that any/all grid variables can be easily copied (eg. w/NCO) from
252        the grid files into any of the other NetCDF files
253      - *always* output grid variables with MDSIO (this will eventually be
254        changed)
255      - output MNC grid file if useMNC is true
256    o every instance of _END_MASTER() has been found and replaced with
257      _END_MASTER( myThid ) in order to satisfy certain picky Sun
258      preprocessors
259    o re-arrange diagnostics pkg initialisation:
260     - allow each package to extend the available diagnostics list
261     - add some checking and fix small problems (multi-threaded, ...)
262     - new S/R diagnostics_fill (replace fill_diagnostics):
263       look through the short list of active diag. (instead of the long list)
264       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
265    
266    checkpoint57a_post
267    o this set of changes restores TAMC compatibility
268      tested for global_ocean.90x40x15 adjoint on trough
269      (what a pain)
270    
271    checkpoint57a_pre
272    o some modifs in tools/build_options for sunos
273    o call ctrl_pack for ctrl at end for optimcycle=0
274    
275    checkpoint57
276    o add horizontal bi-harmonic viscosity for vertical velocity
277      - new parameter viscA4W (defaults to viscA4)
278      - affects only non-hydrostatic code
279      - to be done: no-slip lateral boundary conditions
280    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
281    o implement Implicit Vertical advection for pTracers
282    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
283      (implemented also for implicit vertical diffusion & advection)
284    o OBCS: extend application of tracer open boundary conditions
285      to a strip beyond the boundary of width Olx/Oly
286    o add call monitor to TAF set of required calls (flow directives)
287      and include in natl_box_adjoint
288    o untangle a few ifdefs related to cost, ctrl, autodiff
289      untangel a few ALLOW_ECCO_OPTIMIZATION
290    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
291      (theta2, salt2 in ecco_cost_weights)
292    
293    checkpoint56c_post
294    o OBCS as control variables
295      - update ctrl_ad_diff.list, obcs_ad_diff.list
296      - remove balance of obcs controls from default
297      - fix index bug nobcs in ctrl_init
298      - fix dummy fields filen in ctrl_pack
299      - add dummy weights for obcs
300    o lsopt: comment out fort.94 output
301    o optim:
302      - remove unnecessary header files
303      - adjusted namelists
304      - add xerbla.F to Makefile
305    o exf:
306      - multiple modifications of exf_check_range
307      - unit change in exf_init_runoff from [m/year] to [m/s]
308    o mdsio:
309      - i/o-vector change debugLevel from debLevA to debLevB
310    
311    checkpoint56b_post
312    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
313      is called from DO_THE_MODEL_IO
314      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
315      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
316      - clean up PTRACERS_WRITE_TIMEAVE a little
317    o add another verification experiment that tests both the cfc-pkg and
318      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
319      reactive tendencies treated inline with regular timestepping
320    o testreport previously did a lousy job of comparing small numbers, so
321      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
322      implemented in the little c-progam tmp_cmpnum.c which is embedded in
323      testreport.
324    o ptracers_monitor: bug fix for MPI
325    
326    checkpoint56a_post
327    o GCHEM: finish reorganizating the package
328      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
329        (introduces another 3D-array for each passive tracer, but only if
330        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
331        gchemTendency is not needed because the timestep is done separately)
332      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
333      - GCHEM is now---more or less cleanly---separate from PTRACERS
334      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
335        so clear to me how that should be done in a general way.
336    o CFC: improve formatting of output in CFC_ATMOS
337    o PTRACERS:
338      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
339        that ALL experiments with ptracers enable can be checked. This makes
340        GCHEM_MONITOR obsolete.
341      - include a runtime parameter PTRACERS_monitorFreq that defaults to
342        monitorFreq
343      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
344    o add PTRACERS (PTR0[1-5]) to testreport output
345    o exf_check_range:
346      * default changed to .TRUE.
347      * will check values for niter0 if debLevA, every timestep if debLevB
348      * STOP in exf_check_range if 'out of range'
349      * range chosen generous to allow for potential extema
350      TBD: a version with stricter range
351           permitted range would be runtime parameters
352    o GMredi:
353      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
354      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
355      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
356    o GCHEM:
357      - move call to GCHEM_FORCING_SEP, so that it is now called before
358        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
359      - introduced a useGCHEM runtime flag and applied it everywhere.
360      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
361        this flag is now only visible within GCHEM-pkg routines.
362      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
363        be replaced by a 3D array that is computed before thermodynamics; for
364        this, the tracer ID iTracer had to be included into the parameter list
365        of ptracers_forcing
366      - set up forward_step to call gchem_forcing, that will replace
367        gchem_forcing_int in ptracers_forcing
368      - cleaning up
369    o small cleaning of exch2: remove files that are also in eesupp/src
370    
371    checkpoint56
372    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
373    o mnc: cleanup "full" files--fixes out-of-memory problem
374    o ECCO-GODAE
375      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
376      * fully merged and updated from SIO code
377        windstress sign change affects
378        - exf_inscal_[u/v]stress
379        - sign of xx_tau[u/v] adjustments
380        - signs in cost_scat
381      * ctrl_get_gen: avoid update of tau[u/v] for first few days
382      * natl_box_adjoint updated and compressed
383      * 2-level checkpoint switch added
384        (tested in EXP. 1 of natl_box_adjoint)
385      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
386    o SVD
387      * first complete, non-hacked version for SVD calculations
388      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
389        performed via direct access files admtlm_vector.it????
390        (via ctrl_[un]pack)
391      * optimcycle is used for ARPACK iteration counter
392        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
393      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
394        and add linear transforms where necessary
395      * controls are initial/final SST, SSS (can be extended; need to check
396        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
397    o mdsio: filename info to both stderr, stdout
398    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
399      from sign change
400    
401    checkpoint55j_post
402    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
403      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
404    o add consistent build directories and .cvsignore files to verification
405    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
406    o make all subroutines 30 or less characters in length for certain older
407      compilers to work (a thorough search only turns up two routines in
408      pkg/ptracers)
409    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
410      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
411    
412    checkpoint55i_post
413    o change arrays for total vertical diffusivity (2.D if explicit,
414      3.D if implicit) ; each ptracer uses its own background value.
415    o added mnc/NetCDF output capability to ocn_compon_interf
416      - added bits to verification/cpl_aim+ocn so that it can run on
417        ITRDA and other clusters without the mpirun "-wd" option
418    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
419      configuration
420    o give MNC the ability to create additional files rather than
421      exceeding a specified file size limit "MNC_MAX_FILESIZE"
422      - the default is just less than 2GB which is a practical limit
423        on many systems
424    o Compute the non-local term using either KPP vertical diffusivity (=default)
425       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
426    
427    checkpoint55h_post
428    o add verification test "vermix"
429    o remove all the *_ioinc flags and replace with the single global
430      outputTypesInclusive flag
431    o allow to set a vertical profile of vertical diffusivity for T & S
432    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
433    o useMNC moved from data.mnc to data.pkg
434    
435    checkpoint55g_post
436    o Renaming carbon AD experiments to comply with testreport conventions
437    o Updating adjoint of Held-Suarez hs94.1x64x5
438    o Fixing directives for non-ECCO forward_step, after ECCO directives
439      have been fixed to avoid recomp. of do_oceanic_phys
440      Works well for global_ocean.90x40x15,
441      but recomp. issue remains for carbon
442    o Updating adjoint output for natl_box_adjoint after
443      pkg/ecco has been modified (see taga c55d_post)
444    
445    checkpoint55f_post
446    o rename to timeave_init_fixed
447    
448    checkpoint55e_post
449    o some delicate re-shuffle of store directives to avoid one
450      extra call of do_oceanic_physics
451      affects ecco_the_main_loop.F, do_oceanic_physics.F
452      checkpoint_lev1_directives.h
453    o NB: this may break global_ocean adjoint temporarily,
454      but it is clear how to fix it. Will do later, need this now.
455    
456    checkpoint55d_post
457    o ECCO specific cost function terms (up-to-date with 1x1 runs)
458    o ecco_cost_weights is modified to 1x1 runs
459    o modifs to allow observations to be read in as
460      single file or yearly files
461    o enable to read exf forcing fields as either
462      single file or yearly files (flag useExfYearlyFields)
463    checkpoint55d_pre
464    
465    o switch between 2-level and 3-level checkpointing
466    o add ability of MNC to write local and "partial" (eg. 2D slices where
467      the full 3D field is never actually stored) arrays to NetCDF files
468      with the correct (that is, the complete multi-dimensional) set of
469      array indicies
470      - used in mom_vecinv() to write the diagFreq output
471      - tested (demonstrated) in verification/aim.5l_cs
472    o further mnc-ification
473      - add verification/lab_sea to the list with mnc setups
474      - fix undefined mnc v-names in cd_code
475      - add kpp to mnc output (both snapshot and timeave)
476    o non-hydrostatic code
477      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
478        in calc_gw.F
479      - defaults to viscAh
480      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
481        friction or Leith) in non-hydrostatic mode, as long as there is
482        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
483    o pkg/cost
484      extend simple cost functions to treat time mean quantities
485      (T,U,V) via cost_accumulate_state from cost_tile
486    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
487        be 2 times larger than the minimum size the advection scheme requires.
488        now get a perfect conservation of salt in advect_cs test-exp (updated)
489    o GGL90 (Gaspar's TKE mixed layer)
490      - add horizontal diffusion of TKE, requires exchanges in
491        do_fields_blocking_exchanges, horizontal diffusivity is zero by
492        default. In OPA there is no horizontal diffusion of TKE but the
493        mixing coefficients are computed from a horizontal average of TKE of
494        6 points or so. I think that diffusion has a little more physical
495        justification.
496      - clean up ggl90_calc in the hope of reducing memory usage (this hope
497        was in vain)
498      - mask tke-variable in ggl90_init
499    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
500    o fix biharmonic diffusion on CS-grid.
501    o more obcs stuff
502      - added obcs_external_fields_load as an alternative to the EXF-pkg option
503        for reading boundary values. This routine is called from
504        obcs_prescribe_read
505      - updated obcs_check
506      - changed sponge layer relaxation parameter units for days to seconds
507      - turned off sponge layer by default
508      - changed argument list of OBCS_CALC to myTime+deltaTclock
509      - fixed about 35 bugs in obcs_external_fields_load
510    
511    checkpoint55c_post
512    o obcs stuff
513      - new runtime flags useOBCSprescribe, useOBCSbalance
514      - re-arranged obcs_calc
515      - moved exf_getobcs to obcs_prescibe_read
516        obcs_prescibe_read is called after ORLANSKI stuff
517        and independent of it (executable can contain all).
518      - updated obcs_check
519      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
520        These may be necessary only if tangential velocities are
521        prescribed at OB, not sure, needs testing.
522    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
523      which simplifies the calls and passes the ifc check-bounds test
524    
525    checkpoint55b_post
526    o add a 2D scalar, Z location, exchange_2 routine.
527    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
528      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
529      affects advect_cs results (for the wrong reason): update output.txt
530    o use a more standard discretization for biharmonic viscosity ;
531     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
532      affects results of dome set-up: update output.txt
533    o fix gad_advection.F (CubedSphere part), back to version 1.23
534    o fix bug in mom_vi_del2uv.F (CubedSphere part).
535    
536    checkpoint55a_post
537    o merged code to
538      * prescribe/read time-dependent open boundaries
539        (works in conjunction with exf, cal)
540      * sponge layer code for open boundaries
541      * each boundary N/S/E/W now has its own CPP option
542        (healthy for the adjoint)
543    
544    checkpoint55
545    o up-to-date adjoint of previous breaks
546      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
547      - global_ocean_ebm: adjoint still needs fix (TLM ok)
548      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
549      - carbon: * remove tr1-related adjoint verification
550                * add ptracer as control variable
551    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
552      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
553    
554    checkpoint54f_post
555    o in verification/carbin/ remove experiment related to
556      ALLOW_PASSIVE_TRACER (array tr1 etc)
557      code_ad/ input_ad/ results_ad
558    
559    o add two new packages
560      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
561        + subject to optimization (memory)
562      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
563        + subject to reordering (many GOTOs in the original code)
564        + so far opps is called for every (i,j) point, and then operates in
565          the vertical; one may want to reorder the scheme in order operate in
566          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
567          fields)
568    o overhaul of IO so that we now have flags for MDSIO and/or MNC
569      - all verification tests compile and run with linux_ia32_g77
570      - defaults are compatible with current input files--nothing
571        should change if you were not previously using MNC
572      - MNC output has been added in numerous places (eg. timeave)
573        but there are still a few writes not yet do-able with MNC
574        (this is in progress)
575      - flags now allow for either/or/both use of MDSIO and MNC and
576        documentation will soon follow
577      - numerous small formatting cleanups for ProTeX
578    o add version info (via BUILD_INFO.h) to MNC and stdout
579    
580    checkpoint54e_post
581    o add two new packages
582      - pp81 (Packanowski and Philander, 1981), Richardson number and
583        stratification dependent mixing
584      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
585      - these scheme operate in a similar manner as KPP (without ghat, of
586        course), however there is only one diffusivity that is used for both
587        temperature and salinity (and passive tracers)ç
588    o add offline package
589    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
590      provided by Stephanie Dutkiewicz
591    o genmake2: add ability to search for C compilers and cleanup test output
592      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
593    
594    checkpoint54d_post
595    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
596    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
597      leading to additional shift by 5 days each year of integration
598       (i.e. leading to considerable offset over the years)
599    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
600    o start with no AB and no initial filtering (staggerTimeStep):
601      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
602    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
603      (external loading & cpl import/export stay in forward_step.F)
604    o update coupling interface to work with new staggerTimeStep
605    o change MDSIO ptracers_pickup.
606    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
607    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
608    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
609    
610    checkpoint54c_post
611    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
612      this affects (truncation error) output.txt of test-exp:
613       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
614    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
615    o change Qnet to always be the net heat flux, (+upward).
616      affects (truncation error) output of natl_box exp.: updated
617    o define the max number of passive tracers in PTRACERS_SIZE.h
618    o start to test mnc routinely in exp0
619    o add sea-ice loading (sIceLoad) as a new forcing field.
620    
621    checkpoint54b_post
622    o add testreport "-j JOBS" option for parallel builds (tested and pretty
623       impressive on Altix and Opteron systems)
624    o diagnostics can now write NetCDF files through the mnc package
625    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
626    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
627    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
628      affects (truncation error) output of lab_sea & natl_box exp.: updated
629    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
630    
631    checkpoint54a_post
632    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
633    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
634    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
635    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
636      + internal_wave (shift in writing cg2d_ini_res)
637    checkpoint54a_pre
638    
639    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
640      - modified verification/lab_sea and natl_box_adjoint accordingly
641    
642    checkpoint54
643    checkpoint53g_post
644    o prepare splitting of thermodynamics: store convect.counter in common block
645    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
646      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
647    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
648    o new parameter "nShapS": allow to treat differently S from T (nShapT)
649    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
650    o restore adjointability
651    
652    checkpoint53f_post
653    o modifications that affect AIM experiment results (update output.txt):
654      - no advection of S at top interface Nr (pkg/generic_advdiff)
655      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
656    o AIM pkg:
657      - include stability function into surf.Flux derivative relative to Tsurf
658      - calculate clear-sky radiation & surface temp. change (for diagnostics)
659    
660    checkpoint53e_post
661    o merged cylindrical coord configuration
662    o added rotating_tank experiment
663    checkpoint53e_pre
664    
665    checkpoint53d_post
666    o faulks upgraded: re-generate output.txt that have changed:
667       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
668    o Added Bryan and Lewis, 1979, vertical diffusivity profile
669    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
670    o added Sadourny discretization of Coriolis
671      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
672      - re-enabled use of omega3 (useAbsVorticity)
673    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
674      vector-invariant equations
675      - note: does *NOT* yet use same variable visc. for no-slip BC's.
676    o recoded the lateral boundary conditions for non-hydrostatic w, this time
677      hopefully without new bugs
678      - still to do: biharmonic friction for non-hydrostatic w
679    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
680    o regenerated output for global_ocean_ebm (using -ieee)
681    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
682      of mom_common/
683      - simple re-arrangement of instructions within computing loop
684    checkpoint53d_pre
685    
686    checkpoint53c_post
687    o new version of coupler for AIM+thSIce and Ocean models
688     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
689     - land: change Evaporation of snow
690     - aim with thSIce: fix bug in snow-precip.
691    o changes to calc_gw.F
692     - bug fix for w^2 term near the bottom boundary
693     - (hopefully) improve the lateral slip boundary condtions for use with
694        partial/looped cells
695      - because the bug fix changes two verification experiments anyway (exp5
696        and plume on slope), change the lateral boundary condition from half slip
697        to the value of no_slip_sides
698    o ebm package wasnt quite up to the parallel task. Fixed that.
699    o Adjoint of EBM package + verification
700      * TLM OK
701      * ADM not sufficient accuracy yet (needs further testing)
702    
703    checkpoint53b_post
704    o Commiting new energy balance model to repository
705      * package is pkg/ebm
706      * verif. is verification/global_ocean_ebm
707      * references are in ebm_driver.F
708    C      * X. Wang, P. Stone and J. Marotzke, 1999:
709    C        Global thermohaline circulation. Part I:
710    C        Sensitivity to atmospheric moisture transport.
711    C        J. Climate 12(1), 71-82
712    C      * X. Wang, P. Stone and J. Marotzke, 1999:
713    C        Global thermohaline circulation. Part II:
714    C        Sensitivity with interactive transport.
715    C        J. Climate 12(1), 83-91
716    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
717    C        Destabilization of the thermohaline circulation
718    C        by atmospheric eddy transports.
719    C        J. Climate 7(12), 1870-1882
720    o Will need long integration testing.
721    checkpoint53b_pre
722    
723    o created pkg/mom_common in preparation for variable viscosity code
724    o renamed and split ini_mnc_io
725    o pkg/land: only liquid water can diffuse or run-off
726    o AIM using land: soil wetness availability account for snow
727    o added printMapIncludesZeros to EEPARMS namelist
728    
729    checkpoint53a_post
730    o restore TAMC compatiility for exf_constants.h
731      (no usage of _d in .h)
732    o Additional storing in KPP in an attempt to fix
733      TAMC problem with adjoint of KPP code.
734      (no success...)
735      Identical code works fine with TAF.
736    o Fixed verification/natl_box_adjoint experiments.
737      Initial conditions for Experiments 4 and 5 are now
738      set to "SEAICE_initialHEFF=0", which is more reasonable,
739      and hence gives results closer to that of Experiment 2.
740      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
741    
742    checkpoint53
743    o stable checkpoint with up to date adjoint
744      TLM tests only run for 1st grdchk at the moment. Its unclear if
745      this is a code problem or a problem with resetting code for g_
746      variables that is being autogenerated wrong.
747      Otherwise:
748       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
749       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
750         are both still in chaos following their security messes.
751    
752    checkpoint52n_post
753    o various build (mostly genmake2) changes including:
754      - ability to build/run more easily within Cygwin and MacOS X
755      - more complicated Makefiles with a stronger dependence on Gnu Make
756    o pkg/seaice modifications
757      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
758        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
759        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
760      - changed proxy for geostrophic velocity and updated
761        verification/lab_sea/results/* accordingly
762      - removed ADI dynamic solver from pkg/seaice
763      - replaced all occurrences of 1/CSTICE or 1/CSUICE
764        they caused a segmentation fault under certain circumstances
765      - removed unused field WATR
766    o bug fix in exf-package:
767      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
768         now reflect that.
769    o small fixes in the cal-package:
770      - set reference date to first of January for the 'model'-calendar
771      - failing of cal_CheckDate in cal_FullDate now actually results in a
772        warning
773    o small modifications in exf-package to increase flexibility:
774      - change climtempfreeze from a constant to a runtime parameter that
775        is specified in data.exf_clim (default = -1.9)
776      - introduce runtime parameter windstressmax (default = 2.0) that is
777        specified in data.exf
778    o fix in pkg/thsice:
779      - update Evap (Tsf changes) to be consistent with Latent heat flux
780      - maintain snow precipitation unchanged (even if Tsf >=0).
781     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
782    
783    checkpoint52m_post
784    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
785      this does not change any of the results, because myIter=0 in swfrac always
786      lead to jwtype=2 (the default anyway), but the call makes little sense
787      as a default
788    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
789    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
790      atmospheric model (AIM) to use it ; add a "slab ocean" component.
791    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
792    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
793    o extending useSingleCpuIO option to work with new exch2 I/O format
794      - old-style, missing-tile I/O is still accessible by defining CPP
795        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
796    o monitor package can write to NetCDF files and/or STDOUT
797    o fix re-definition bug in MNC_GRID_INIT_ALL()
798    o doc/api_reference added
799      - a framework for building an API Reference Manual using all
800        the "protex" comments embedded in the code
801      - see pkg/generic_advdiff, pkg/mnc for examples
802    o MNC:
803      - make myThid the last argument for all subroutines
804      - new default for the grid files: NO halos
805      - add useMNC and other run-time flags
806      - separate per-file-group handling of the unlimited dimension
807      - early initialization of MNC w/ flags read at the eeboot stage
808        and lookup tables set in initialize_fixed
809      - write all MNC output to a freshly-created directory
810    o thermodynamics sea-ice (thsice) is now tested with testreport.
811    o test exp. advect_cs: use the standard cs32 grid ; update output.
812    o Added functionality to grdchk:
813      pick global i,j,k position (or nearest wet) where to perform check.
814    
815    checkpoint52l_post
816    o new land formulation:
817      a) use ground enthalpy as prognostic variable to ensure exact
818         energy conservation.
819      b) account for water temperature and for latent heat of freezing
820         in all processes (rain, run-off, ground storage)
821      c) compute surface and ground temperature implicitly.
822    o aim_v23 modification for new land model:
823      a) Treat separately land / ocean / sea-ice surface fluxes
824         to allow implicit computation of land & sea-ice surface temp.
825      b) add snow precipitation.
826    checkpoint52l_pre
827    
828    o fix problem (when 1 tile is empty) in min/max monitor.
829    o fix bug in timeAve (u,vZetatave in common block)
830    o no restoring terms under ice for pkg/seaice
831    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
832    o bug fix for pkg/seaice pickups
833    o change MNC call locations and add coordinate attributes
834    o mask vorticity at the corner ; affects global_ocean.cs output
835    o fix ini_curvilinear_grid ; test CS experiments with mpi
836    o aim.5l_cs: modify sea-ice fraction input file ; update output
837    o exf: Adding simple range check routine for exf fields after read
838    
839    checkpoint52k_post
840    o removed top-level directory "diags"
841      - we migrated these functions to pkg/timeave a long time ago
842    o fixed bug introduced in pkg/monitor
843    o accuracy ctrlprec = 32 insuffient for gradient checks using
844      averaged fields (I/O via cost_averages)
845      -> use ctrl.h in active_file*.F to control I/O precision.
846    o paramter list of CALL ADTHE_MAIN_LOOP
847    o added initial do_the_model_io to ecco
848    o set all ...Freq to zero after cost_final
849      taveFreq, dumpFreq, pChkptFreq
850    o MAIN and ECCO differentiability restored
851    
852    checkpoint52j_post
853    o fix nchklev in tamc.h for global_ocean...
854    o Bringing flow and store directives up-to-date
855    o Really weird thing!
856      call do_the_model_io from the_main_loop with parameters
857      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
858      TAF places a faulty re-call of initialise_varia
859      after cost_final call which should not be there!
860    checkpoint52j_pre
861    
862    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
863      error messages
864    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
865    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
866      debug output
867    o modfied mdsio_writefield.F to handle non-global files under exch2
868    o update AIM Cubed-Sphere exp (aim.5l_cs):
869      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
870    o update AIM Equatorial Channel exp:
871      use standard aim_v23 pkg and change the SST fields to be more realistic.
872    o globalFile now works with exch2
873    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
874      mon_vort3.F to make exch2 friendly with >1 tile per cube face
875    o limit timeave output for hi-res integrations
876    
877    checkpoint52i_post
878    o removed CPP_EEOPTIONS.h from verification/*/code
879    o updated the tiling for global_ocean_pressure
880    checkpoint52i_pre
881    
882    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
883      the old pkg/aim).
884    
885    checkpoint52h_pre
886    o shortened offending lines in exch2_send_rx?.template
887    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
888    o genmake2: add build & execute test for NetCDF code
889    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
890      old grid files, moved CPP_EEMACROS.h to pkg/exch2
891    o added useSingleCPUIO flag to monitor.F and mon_out.F
892    o added temporary hack for sea-ice dynamics on the cube:
893      metric terms are ignored and it is assumed that
894      there is no sea-ice on cube faces 1, 2, 4, and 5.
895    
896    checkpoint52f_post
897    o added exch2 cube routines to pkg/exch2
898    o modified hs94.cs-32x32x5 to use it
899    o added new grid files to hs94.cs-32x32x5
900    checkpoint52f_pre
901    
902    checkpoint52e_post
903    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
904      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
905    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
906      to work with implicit vertical advection and AB ;
907    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
908    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
909     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
910    checkpoint52e_pre
911    
912    o fix bug in impldiff when Nr=1 or Nr=2.
913    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
914    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
915    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
916      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
917    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
918    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
919    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
920    
921    checkpoint52d_post
922    o re-tiled many expts to allow comparison in multi-processor mode
923      - updated output accordingly
924      - changed hs94.128x64x5 to use intial T from file rather than use the
925        random number generator
926    o add infrastructure in model routines for fizhi and gridalt packages
927    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
928    o changes to permit hi-res, cubed-sphere, configuration
929      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
930      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
931      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
932        of surface winds for the cube
933      (A verification experiment, based on global_ocean.cs32x15, but with
934       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
935       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
936       complete with example surface forcing files and matlab scripts to look
937       at the output and compare it with that of global_ocean.cs32x15.)
938    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
939       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
940       to conform to the common rule.
941    o check-in the first version of the coupler + interfaces for multi-components
942       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
943       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
944       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
945       - ocean and atmos. share the same horizontal grid (no interpolation).
946       - exchanges between component and coupler is done in forward_step
947    o new verification experiment, cpl_aim+ocn:
948       coupled ocean - AIM atmosphere on cs32 grid.
949    
950    checkpoint52d_pre
951    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
952    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
953    
954    checkpoint52c_post
955    o Fixing OPTIONS files for use of exf:
956      - ALLOW_ECCO not needed
957      - ECCO_CPPOPTIONS.h should not be included from
958        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
959        as has been the case in the past
960      - All cal/exf related options are currently set in
961        single header file. Should remain so until we
962        agree on a consistent new policy.
963    o Removed all CPP options for cal package.
964      cal has no more CPP options.
965    o modified STOREs in GAD_ADVECTION
966    o corrected key comp. for passkey
967    
968    checkpoint52b_post
969    o new version: "thsice" of thermodynamic sea-ice pkg:
970     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
971     - modify fluxes but do not change theta directly;
972     - light cleaning of bulk_force pkg (still needed with thsice).
973     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
974       + output_thsice.txt to test thsice & bulk_force pkgs.
975    o put back grid & coriolis monitor output.
976    checkpoint52b_pre
977    
978    o call "do_the_model_io" at the beginning (=> dump initial state)
979    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
980    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
981      (need info on NUMBER_OF_PTRACERS)
982    o missing PTRACERS headers in some routines
983    o default tamc.h in pkg/autodiff supposed to crash
984      to ensure proper customization
985    
986    checkpoint52a_post
987    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
988      - moved surfaceTendencyTice from pkg/seaice to main code
989      - subroutine FREEZE_SURFACE now limits only surface temperature
990        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
991        => new output.txt for global_ocean.cs32x15 & global_with_exf
992      - keep the old version of FREEZE for backward compatibility;
993        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
994      - corresponding modifs for TAF directives
995    o added surface flux output variables to TIMEAVE_STATVARS
996    o time-averaged output for pkg/ptracers
997    o fix problem with ECCO-related divided adjoint
998      snapshot file was missing some ad-variables,
999      but no warning issued by TAF
1000    
1001    checkpoint52a_pre
1002    o some bug fixes for #undef REAL4_IS_SLOW
1003    
1004    checkpoint52 = ecco_c52_e35
1005    o after testing adjoints of checkpoint51u_post
1006    
1007    checkpoint51u_post
1008    o this is the post-merge tag of the ecco-branch
1009      (needs another clean checkout and re-testing)
1010    o various natl_box_adjoint configs and results
1011      but no input fields
1012    o obcs adjoint not yet merged!
1013    o adding ECCO global 1x1 and 2x2 degree configs
1014    o updated/extended some store directives for seaice
1015    o pkg/ecco now containes ecco-specific part of cost function
1016    o top level routines the_main_loop, forward_step
1017      supersede those in model/src/
1018      previous input data.cost now in data.ecco
1019      (new namelist ecco_cost_nml)
1020    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1021    
1022    checkpoint51t_post
1023    o this is the pre-merge tag of the ecco-branch
1024    
1025    checkpoint51s_post
1026    o cleanup: removed various obsolete #define-s
1027    o pkg/grdchk
1028      - renamed 'ph-grd 3' to 'grad-res'
1029      - merged from ecco-branch
1030        (remaining bug fixes for obcs gradient checks)
1031      - additional high-precision output for testreport
1032        (grep for 'precision_grdchk_result')
1033    
1034    checkpoint51r_post
1035    o cleaned up or removed CPP_OPTIONS.h files
1036    o updated results for some of the tests to reflect the new
1037      optfiles (-ieee: -O0 instead of -O3)
1038    
1039    checkpoint51q_post
1040    o cd_code:
1041      - moved cd_scheme.F -> cd_code_scheme.F
1042      - separate read_checkpoint from cd_code_ini_vars.F
1043      - separated cd_code part from write_checkpoint
1044      - updated AD_SOURCE, generated .flow
1045      - added CD_CODE_VARS.h to the_main_loop
1046      - Moving cd_code specific store dir.s to pkg/cd_code
1047    o ctrl package totally restructured
1048      - pack/unpack now optional and decoupled from
1049        xx_/adxx_ I/O
1050      - ctrl_pack/unpack cleaned
1051        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1052      - confined inclusion of AD_CONFIG.h to where necessary.
1053    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1054    
1055    checkpoint51p_post
1056    o create initial cd_code package
1057      - WARNING: the initialization of fields within packages
1058        is broken because INI_FIELDS (where READ_CHECKPOINT is
1059        called) is called *before* PACKAGES_INIT_VARIABLES.
1060        This seems to be backwards since
1061        1) its important to initially zero the entire field including
1062           the "halo" region
1063        2) zeroing needs to be done *before* reading pickup info
1064           and the pickup call might or might not happen in any
1065           particular run
1066      - this needs an overhaul for R2
1067    o cleanup verification/*/code/GMREDI_OPTIONS.h
1068    o cleanup testreport
1069    
1070    checkpoint51o_post
1071    o bringing AD-related verif's up to date with genmake2
1072      - carbon/
1073      - global_ocean.90x40x15/
1074      - hs.94.1x64x5/
1075      - (front_relax/ )
1076    o (more) consistent directory structure for AD-related verif.'s
1077    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1078    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1079    o bug fix in find_alpha.F for MDJWF:
1080      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1081        change rho -> rho-rhoConst
1082      - replace call find_rho to find_rhonum
1083    o initialisation of rFlx extended to full array (required by TAF)
1084      and shifted to thermodynamics
1085    o removed PTRACERS.h in ptracers routine
1086    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1087    o Correcting initialisations for fVerU, fVerV.
1088    o helping TAF to recognize dependency on kUp for
1089      fVerU, fVerV
1090    o Replacing delZ by delR in pkg/ctrl/
1091    checkpoint51o_pre
1092    
1093    o undid all of cp51 pending some cleanups and discussion
1094    o added the [#include "AD_CONFIG.h"] statement to all files that need
1095       it for adjoint/tl #defines
1096     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1097     o removed tools/genmake since it no longer works
1098    
1099    checkpoint51n_post
1100    o modifications to make FREEZE flux visible to pkg/kpp
1101      - moved surfaceTendencyTice from pkg/seaice to main code
1102      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1103      - subroutine FREEZE now limits only surface temperature
1104        (this means new output.txt for global_ocean.90x40x15,
1105         global_ocean.cs32x15, and global_with_exf)
1106    o added surface flux output variables to TIMEAVE_STATVARS
1107    
1108    checkpoint51n_pre
1109    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1110    o added [#include "AD_CONFIG.h"] to all files that use the following
1111      defines:
1112      - ALLOW_ADJOINT_RUN
1113      - ALLOW_TANGENTLINEAR_RUN
1114      - ALLOW_ECCO_OPTIMIZATION
1115    
1116    checkpoint51m_post
1117    o incorporating changes to get TAMC/TAF working in genmake2
1118      - added new TAMC/TAF targets to the Makefile
1119      - various cleanups related to package handling
1120      - these changes should have no impact on the forward model
1121    
1122    checkpoint51l_post
1123    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1124     - faster algorithm for cal_addtime.F
1125     - higher precision arithmetic, where needed
1126     - pkg/exf *startdate variables changed from calendar date to
1127       model integration time
1128    
1129    checkpoint51l_pre
1130    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1131    o enable to apply restoring on S & T only in a latitude band.
1132    o update output (external_forcing_surf modif. change truncation errors)
1133       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1134    
1135    checkpoint51k_post
1136    o change default to: useNHMTerms=.FALSE.
1137     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1138       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1139     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1140        exp1, ideal_2D_oce
1141     - change data file of oceanic exp (leave the results unchanged for now)
1142       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1143    o set gravitySign automatically according to the vertical coordinate used
1144      (and change sign: back to "logical" value: +1 when R increases downward)
1145    o added an include barrier to the default CPP_OPTIONS.h and
1146      removed the #include "PACKAGES_CONFIG.h" from it
1147    o fix a bug in mom_fluxform (from chk51j_post)
1148    
1149    checkpoint51j_post
1150    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1151    o adjusted some flow directives (dynamics, thermodynamics)
1152    o added cubed-sphere case to test cost function
1153    o heckpoint_lev?_directives.h now include
1154      pkg-specific directives, whenever those are enabled.
1155    o Moving pkg-specific flow directives to corresponding pkg
1156      Moving pkg-specific differentiation list to corresponding pkg
1157      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1158      ---> conventions are
1159           - pkg_ad.flow
1160           - pkg_ad_diff.list
1161           - pkg_ad_check_lev?_dir.h
1162    
1163    checkpoint51i_post
1164    o merge of the branch-genmake2
1165      - knowingly breaks the older genmake
1166      - automatic generation of all ALLOW_${PKG_NAME} defines
1167      - new testreport supersedes older testscript
1168    o large number of package inclusion and header cleanups
1169    checkpoint51i_pre
1170    
1171    o new output for adjoin of global ocean vector invariant
1172    o fix for checkpoint of thermodynamic seaice and bulk_force
1173    o Steph gchem various cleanups
1174    
1175    checkpoint 51h_pre
1176    o fixed some single quotes
1177    o modify gchem pkg to be more versatile
1178    o modifications to clean up dic pkg
1179    o add pkg/cfc
1180    
1181    checkpoint51g_post
1182    o provide links for ARPACK and ADM*TLM
1183    o start removing verification/vero/
1184    o update AD-related stuff
1185      (in particular some IF-statements in model/src/ routines)
1186    o adding to verification/global_ocean.90x40x15/ adjoint of
1187      vector invariant setup
1188    
1189    checkpoint51f_post
1190    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1191    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1192      of tracer Green's fucntions for ocean inversion project.
1193    
1194    checkpoint51f_pre
1195    o Added on-the-fly spatial interpolation capability
1196        "USE_EXF_INTERPOLATION" to pkg/exf.
1197      - This is a temporary Cartesian-grid hack until
1198        the super-duper ESMF coupler becomes available.
1199      - See verification/global_with_exf/README for usage example.
1200      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1201        flags and modified pkg/seaice accordingly.
1202    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1203        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1204        non-local transport term.
1205    
1206    checkpoint51e_post
1207    o pkg/mom_vecinv:
1208      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1209      - add time-ave diagnostic of vorticity advection.
1210    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1211    o atmospheric geopotential: - include water vapor effect;
1212                                - use p^kappa in p* scaling.
1213    o land pkg: read initial state from files.
1214    o AIM : add stratospheric drag in the upper level
1215    
1216    checkpoint51d_post
1217    o change function ILNBLNK (=> last non-blank char.) to return zero
1218      (instead of the string length) when the string. char is empty
1219    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1220    o modif's to restore TAMC compatibility
1221      - avoid "_d" constructs in PARAMETER declarations
1222      - avoid interrupting lines by comment lines
1223    o Use cluster local disks for purely local I/O
1224      vs. globally visible disks needed for ctrl stuff
1225      (merged from ecco-branch)
1226      - new active_file_loc... and mdsio_..._loc routines
1227      - affected packages: autodiff, ctrl, grdchk, mdsio
1228    
1229    checkpoint51c_post
1230    o introducing integer flag debugLevel
1231      - debLevZero: suppress all output
1232      - debLevA: standard
1233      - debLevB: equivalent to current debugMode=.TRUE.
1234    o introducing pathname variable mdsioLocalDir for mdsio
1235      that can be specified at runtime
1236      (relevant for cluster I/O to local disk)
1237    `
1238    >>>checkpoint51b_post
1239    adjoint of ptracers
1240    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1241    o extended state in checkpoint_lev?, etc.
1242    o alternative ctrl/cost with tr1 or ptracer
1243    o new comlev1_bibj_ptracers
1244    o new ptracers.flow
1245    o made ptracers_forcing same as external_forcing_s
1246    o added verification for adjoint with ptracers
1247      - adm. grdchk fail so far
1248      - tlm. grdchk OK
1249      - checked tapelev/comlev recomputations: OK
1250    <<<checkpoint51b_pre
1251    
1252    checkpoint51a_post
1253    o added code for biogeochemistry package
1254      - new pkgs: dic, gchem
1255      - new subroutine in ptracers
1256    o modify code for biogeo packages
1257      - in model/src and pkg/ptracers
1258    
1259    checkpoint51
1260    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1261      - autodiff, ctrl, exf, grdchk, seaice
1262      kept separate packages
1263      - cost, ecco, obcs
1264    o updating verification/internal_wave, verification/lab_sea
1265      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1266    
1267    checkpoint50i_post
1268    o Preparing next differentiable checkpoint and sync
1269      of MAIN vs. ecco-branch
1270      - 1st step: this one is differentiable
1271      - 2nd step: next(! not this) checkpoint will have updated packages
1272                  from ecco-branch)
1273    
1274    checkpoint50h_post
1275    o new package "land": provide surface BC for AIM.
1276    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1277    o AIM: use true log-P extrapolation for near surface temp (= as in
1278        F.Molteni paper) ; update aim.5l_cs output.
1279    o New variable in PARM03 for more flexible pickups
1280    o somewhat cleaned package initialisation sequence for
1281      ctrl/ cost/ ecco/ in packages_... routines
1282    
1283    checkpoint50g_post
1284    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1285      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1286      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1287        made the default because of faster convergence than ADI
1288    
1289    checkpoint50f_post
1290    o exf totally restructured
1291      - replaced all exf_set_ routines by one generic exf_set_gen.F
1292        and made sure it's still differentiable
1293      - split exf_getffields.F into new exf_bulkformulae.F
1294      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1295      - updated adjoint/makefile and relevant verif. accordingly
1296    
1297    checkpoint50f_pre
1298     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1299          + change Evap over land. (update aim.5l_cs output)
1300     o added missing .cvsignores and made uniform across expts
1301     o changed configuration of tidal_basin_2d expt
1302     o added pkg/debug functions for tracing code in fatal crashes
1303     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1304     o new fn in pkg/monitor to stop model if solution grows too big
1305     o removed lots of single quotes from comments
1306    
1307    checkpoint50e_post
1308    o make KPP work with PTRACERS
1309     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1310       nearly a copy of kpp_transport_s
1311     - there is no analogue to SurfaceTendencyS, so I have to use
1312       gPtr(of the surface layer) instead
1313    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1314    checkpoint50e_pre
1315    
1316    checkpoint50d_post
1317    o change kpp output from multiple-record state files to single-record state
1318      files analogous to write_state.F
1319    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1320      analogous to the cg2d-related output.
1321    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1322      so that writing to internal file fn (with length 512) fails.
1323    checkpoint50d_pre
1324    
1325    checkpoint50c_post
1326    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1327    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1328    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1329    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1330    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1331    
1332    checkpoint50c_pre
1333    Merging from release1_p13:
1334    o bug fix for pkg/seaice dynamic solver
1335    o Added SEAICE_initialHEFF to pkg/seaice
1336    
1337    checkpoint50b_post
1338    o store u*,v* in gU,V instead of in guNm1,gvNm1
1339    o in order to put the momForcing out of the Adams-Bashforth:
1340      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1341      to timestep.F
1342    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1343    o re-generate output for highly sensitive test-exp:
1344       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1345    
1346    checkpoint50b_pre
1347    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1348    o corrected CPP option mismatch in exf_Bulk... functions for case
1349      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1350    
1351    checkpoint50a_post
1352    o Bug fix for merging between c50 and KPP.
1353      ikey was passed from thermodynamics to kpp_calc via
1354      common block rather than being recomputed in kpp_calc,
1355      in contradiction with new key itdkey.
1356      New key ikppkey created, and tamc.h headers updated.
1357    
1358    checkpoint50
1359    - 2nd step of merge with ecco-branch:
1360      merge changes in ecco-branch back into main trunk
1361    - bug fix in find_alpha
1362    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1363    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1364    - merged some sliced AD support routines
1365    
1366    checkpoint49
1367    merged from ecco-branch:
1368    o exf:
1369      - Enable initialisation of forcing fields to constant
1370        (runtime) values.
1371      - in exf_getffields.F
1372        Reduce i-/j-loop to interior domain, discarding overlaps.
1373        That also fixes wrong TAF-key computations for key_1, key_2
1374        with bulf formulae.
1375      - exf_init.F modify #ifdef for exf_init_evap
1376      - exf_getffieldrec.F, ctrl_getrec.F
1377        The following INT-usages are not safe:
1378          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1379          fldcount = int(fldsecs/fldperiod) + 1
1380        and were modified.
1381    o autodiff: checkpoint_lev...
1382      - updated storing for bulk formulae (some arrays were missing)
1383      - added state for seaice package
1384      - synchronized with main branch
1385    o DIVA:
1386      Modif.s in
1387      - the_main_loop.F
1388      - the_model_main.F
1389      and added cost_final_restore.F cost_final_store.F
1390      o With these changes, it is possible to fully separate
1391        the first forward run to compute the cost function (mdthe_main_loop)
1392        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1393        into separate model executions.
1394        This enables better tuning of DIVA to given queue sizes.
1395      o Loss of cost function value in consecutive DIVA runs is
1396        fixed by storing to 'costfinal' file.
1397      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1398        beginning/end of adjoint integration is accounted for.
1399      The current changes apply to TAF-1.4.26.
1400      TAF has one remaining bug, requiring one manual change
1401      (see MITgcm manual).
1402    o cal: synchronized between MAIN and ecco-branch
1403    
1404    checkpoint48i_post
1405    o Changes to restore differentiability of code w.r.t. previous tag
1406      (mostly adding new routines to make list and replacing
1407      pressure by totPhiHyd).
1408    o Updated and merged grdchk package
1409      - has both ADM and TLM checks
1410      - works for single- and multi-proc.
1411      - output cleaned
1412      - worked successfully for parallel DIVA
1413    o genmake:
1414      - Adding -platform=SP4
1415      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1416    o Modif. for DIVA:
1417      ctrl_unpack should not be called in intermediate DIVA interval.
1418      (similar thing would apply for active files such as
1419      tbar, sbar, psbar, which should not be reinitialised;
1420      only relevant for ecco-branch)
1421    
1422    checkpoint48h_post
1423    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1424    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1425    o Added SEAICE_initialHEFF to pkg/seaice
1426    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1427    
1428    checkpoint48g_post
1429    --- EOS:
1430    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1431      store total Potential in totPhyHyd for diagnostics & EOS.
1432    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1433    --- Pressure/geopotential gradient:
1434    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1435    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1436      ( changes results of global_ocean_pressure )
1437    o NLFS + z-coord.: add eta*Rho' contribution.
1438    o accurate phiHyd when using interface-W at the middle between 2 centers
1439     ( changes results of ideal_2D_oce )
1440    o includes r* 2nd term in potential gradient.
1441    
1442    checkpoint48f_post
1443    Merging from release1_p12:
1444    o Modifications for using pkg/exf with pkg/seaice
1445      - improved description of the various forcing configurations
1446      - added basic radiation bulk formulae to pkg/exf
1447      - units/sign fix for evap computation in exf_getffields.F
1448      - updated verification/global_with_exf/results/output.txt
1449    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1450      (SBO) core products, including oceanic mass, center-of-mass,
1451      angular, and bottom pressure (see pkg/sbo/README.sbo).
1452    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1453      to avoid negative values in shallow regions.
1454      - updated verification/natl_box/results/output.txt
1455      - updated verification/lab_sea/results/output.txt
1456    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1457    o Added useSingleCpuIO option (see PARAMS.h).
1458    o Updated useSingleCpuIO option in mdsio_writefield.F to
1459      work with multi-field files, e.g., for single-file pickup.
1460    o pkg/seaice:
1461      - bug fix in growth.F: QNET for no shortwave case
1462      - added HeffFile for specifying initial sea-ice thickness
1463      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1464    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1465      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1466    o pkg/seaice:
1467      - adjoint-friendly modifications
1468      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1469    
1470    checkpoint48e_post
1471    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1472    o dynamics: change definition of computational domain & adapt mom_fluxform
1473      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1474    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1475        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1476        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1477        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1478        inverted_barometer solid-body.cs-32x32x1
1479      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1480    
1481    checkpoint48d_post
1482    o in preparation for r*:
1483     a) use pre-computed gradient of hydrostatic potential:
1484        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1485     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1486        => affects results of glob_oce_pressure (different truncation error)  
1487      update output.txt of ideal_2D_oce & global_ocean_pressure
1488    
1489    checkpoint48d_pre
1490    o in preparation for r*:
1491      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1492      pass the 2 comp. of the grad. as arguments to momentum S/R.
1493      but for the moment, only used if it does not change the results.
1494    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1495    
1496    checkpoint48c_post
1497    Modifications in treatment of initial flux forcing controls
1498    to avoid extra storing of flux fields.
1499    
1500    checkpoint48c_pre
1501    o Added tidal_basin_2d experiment (currently 1D!)
1502    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1503    
1504    checkpoint48b_post
1505    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1506     (modification to pressure gradient not yet implemented)
1507    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1508      (for U & V) that are used for vertical advection of momentum.
1509    
1510    checkpoint48a_post
1511    o In preparation for r*, use temp. array to compute vertical transport
1512       in flux-form momentum pkg. => change results of few test-exp.
1513      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1514                        lab_sea, natl_box & plume_on_slope
1515    
1516    checkpoint48
1517    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1518    
1519    checkpoint47j_post
1520    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1521    o moved adexch from forward_step to addummy_in_stepping
1522    o added exch in ctrl_map_...
1523    o aveFreq.=0. at end of cost_final to avoid overwrite in
1524      reverse checkpointing loop
1525    o Yet more changes in gmredi:
1526      * adgmredi_calc_tensor
1527        avoiding all recomputation of gmredi_slope_limit
1528      * adgmredi_x/y/rtransport
1529        added flag for excessive storing to avoid recomp. of
1530        u/v/rtans, dTdx/y/z
1531        -> this is not really necessary and very memory-consuming
1532      * adgmredi_slope_psi:
1533        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1534      * gmredi_slope_limit
1535        re-activated full calculation of taperfct for case 'ac02'
1536    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1537    
1538    checkpoint47i_post
1539    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1540    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1541      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1542    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1543    o gmredi: fix few bugs.
1544    
1545    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1546    This will be a good checkpoint to plug into the ecco-branch.
1547    o few modif.'s to get latest version adjointed
1548      (mainly kick out code in ini_linear_phisurf)
1549    o modif's to run adjoint with exactConserv
1550    o case GM_BOLUS_ADVEC should be cleaned
1551      S/R gmredi_slope_psi should be cleaned
1552    o verification/carbon now has exactConserv=.TRUE.
1553    
1554    checkpoint47g_post
1555    o time-average AIM output: becomes independent from statvars time-average
1556      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1557    o After TAF bug fix:
1558      Tested adjoint of gmredi package.
1559      Tests were done with checkpoint47 rather than with latest
1560      checkpoint47f_post since the latter is broken for the adjoint
1561      verification/carbon/ contains both ADM and TLM gradient checks.
1562    Here they are, before they get changed/lost/stolen.
1563    Mostly modif.'s to fix numerical sensitivities.
1564    Gradient checks OK for
1565    - GM_taper_scheme:
1566      * clipping
1567      * ac02
1568      * linear
1569      * glw91
1570      * dm95
1571      * ldd97
1572    - GMREDI_OPTIONS:
1573      * GM_VISBECK_VARIABLE_K
1574      * GM_NON_UNITY_DIAGONAL
1575      * GM_EXTRA_DIAGONAL
1576      * GM_BOLUS_ADVEC
1577    in conjunction with data.gmredi parameters to be checked in
1578    in a few minutes under verification/carbon/code/
1579    
1580    checkpoint47f_post
1581    Merging from release1_p10:
1582    o modifications for using pkg/exf with pkg/seaice
1583      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1584        and SEAICE_EXTERNAL_FLUXES
1585      - pkg/exf CPP options EXF_READ_EVAP and
1586        EXF_NO_BULK_COMPUTATIONS
1587      - usage examples are Experiments 8 and 9 in
1588        verification/lab_sea/README
1589      - verification/lab_sea default experiment now uses
1590        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1591    
1592    checkpoint47e_post
1593    o created a tag prior to creating a branch
1594    
1595    checkpoint47d_post
1596    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1597      at the bottom boundary had an erroneous half slip boundary condition
1598    o added bottom drag and no slip boundary condition capabilities to
1599      oceanic pressure coordinates code
1600    o added new verification experiment global_ocean_pressure, this experiment is
1601      also described in the tutorial section of the manual
1602    checkpoint47d_pre
1603    
1604    checkpoint47c_post
1605    o Added a verification experiment for a global cubed-sphere ocean run
1606      -  verification/global_ocean.cubed32x32x30
1607      -  uses pkg/therm_seaice and pkg/bulk_forcing
1608    
1609    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1610    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1611      when using P-coordinate; only implemented for atmospheric config.
1612    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1613      NOTES: requires option NONLIN_FRSURF to be "#define".
1614    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1615    
1616    checkpoint47b_post
1617    Merging from release1_p9:
1618    o pkg/seaice
1619      - removed GOTO's and added taf directives
1620      - double precision constants to reduce the g77 (Linux)
1621        to F77 (SGI) differences reported in release1_p8
1622    o tools/genmake
1623      - added SGI options
1624    o verification/testscript
1625      - updated to that of checkpoint47a_post
1626    o verification/global_ocean.90x40x15/input/eedata
1627      - modified for SGI f77 compatibility
1628    o verification/lab_sea
1629      - added description of sea-ice model
1630      - added missing matlab routines
1631      - added test of thermodynamics parallelization
1632    
1633    checkpoint47a_post
1634    o new pkg: aim_v23
1635     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1636       for now, keep the same surface forcing as before.
1637     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1638     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1639     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1640    o add diagnostic of surface correction term in monitor output
1641    
1642    o bulk_force and therm_seaice
1643    - Two packages:  bulk_force (Bulk forcing)
1644      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1645    - Earlier integration from Stephaine Dutkiewicz
1646      and Patrick Heimbach.
1647    - Two ifdef statements for compile time,
1648       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1649    
1650    checkpoint47
1651    differentiable version of checkpoint46n_post
1652    o bug fix in quasihydrostaticterms
1653    o * "clean" adjoint code (in terms of extensive recomputations)
1654        can now be obtained for all GMREDI options (i.e. for
1655        - GM_VISBECK_VARIABLE_K
1656        - GM_NON_UNITY_DIAGONAL
1657        - GM_EXTRA_DIAGONAL
1658        - GM_BOLUS_ADVEC )
1659      * However, wrong gradient check problem remains unsolved.
1660      * New CPP options have been introduced for different
1661        tapering schemes
1662    o external_fields_load now part of differentiation list
1663    o pressure needs multiple storing;
1664      would be nice to have store_pressure at beginning or
1665      end of forward_step, e.g. by having phiHyd global (5-dim.)
1666      (NB: pressure is needed for certain cases in find_rho,
1667      which is also invoked through convective_adjustment).
1668    o recomputations in find_rho for cases
1669     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1670    o #define ATMOSPHERIC_LOADING should be differentiable
1671    o ini_forcing shifted to begining of initialise_varia
1672    o Incorporating QNVS line search routines into MITgcm
1673      (this is separate code, and therefore not under pkg)
1674      lsopt/, optim/
1675    o Updated verification/carbon/
1676      - #define GM_VISBECK_VARIABLE_K
1677      - GM_taper_scheme    = 'ldd97'    
1678    
1679    checkpoint46n_post
1680    Merging from release1_p8:
1681    o verification/natl_box:
1682      updating new external_fields_load routine
1683    o New package: pkg/seaice
1684      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1685      The sea-ice code is based on Hibler (1979-1980).
1686      Two sea-ice dynamic solvers, ADI and LSR, are included.
1687      In addition to computing prognostic sea-ice variables and diagnosing
1688      the forcing/external data fields that drive the ocean model,
1689      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1690      The implied surface heat flux is then stored in variable
1691      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1692      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1693      non-local transport term.  Because this call precedes model
1694      thermodynamics, temperature under sea-ice may not be "exactly" at
1695      the freezing point by the time theta is dumped or time-averaged.
1696      N.B.: fairly large differences in accuracy occur across
1697            different platforms/compilers; comparison between
1698            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1699            generated output gives:
1700       T           S           U           V
1701      C D M    c        m  s        m  s        m  s        m  s
1702      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1703      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1704      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1705    
1706      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1707    o GAD:
1708      - generated new common blocks to account for call of
1709        same gad routines with differing traceridentities
1710        (needed to modify tracerIdentity indices in GAD.h)
1711      - generated separate common blocks for case useCubedSphereExchange
1712        (Department of Futurology)
1713      - parameter lists to gmredi_?transport: added tracerIdentity
1714      - added new key indices to tamc.h
1715    o external_fields_load:
1716      - added this routine to TAF list
1717      - needed to make some common blocks global and additional storing
1718        along the same lines as exf package (checkpoint_lev?_directives.h)
1719    o exf:
1720      updated external forcing package
1721      - bug fixes carried over from ecco-branch
1722        (missing OBCS_OPTIONS.h in two routines)
1723      - enable easy to use "no forcing".
1724      - added exf I/O for atmospheric loading
1725      - added exf I/O for runoff data
1726      - transfered scaling between exf <-> MITgcm to exf namelist
1727    o Adding new verification experiment global_with_exf.
1728      This verification experiment is almost identical to the
1729      global_ocean.90x40x15 experiment, except that it uses
1730      the exf (and cal) package instead of the
1731      external_fields_load routine (cf README file).
1732    
1733    checkpoint46m_post
1734    o modified testscript to return -- when there are no lines of "%MON" output
1735    o added new flag "quasiHydrostatic" for QH mode
1736      and new routine quasihydrostaticterms()
1737    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1738      New routine: mom_u_coriolis_nh()
1739    o fixed sign of non-hydrostatic metric terms in u and v equations.
1740      Depend on correct sign of gravitySign.
1741    o added work.pc* to .cvsignore in aim directories using ifc
1742    o introduced flag for controllin non-hydrostatic metric terms
1743    o removed gravitySign from PARM04
1744    o switched to g77/ifc from pgf77 in aim experiments
1745    
1746    checkpoint46l_post
1747    o made convective adjustment work with pressure coordinates:
1748     - changed the direction of k-loop in convective_adjustment.F for the
1749       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1750     - adjusted the reference pressure k-index in convective_adjustment.F
1751     - adjusted the convection condition in convect.F (in analogy to
1752       calc_ivdc.F)
1753     - convective_adjustment no longer computes anything on the halos
1754     - removed the warnings about negative salinity from find_rho.F and
1755       find_alpha.F; instead the new routine look_for_neg_salinity, called
1756       at the beginning of find_rho, find_alpha, and find_beta, does a
1757       check of the entire slice, if CPP-option
1758       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1759    checkpoint46l_pre
1760    
1761    checkpoint46k_post
1762    o fixed the verification/global_ocean.90x40x15 experiment:
1763     - new bathymetry (the world according to A., JMC, and M.)
1764     - new initial fields and forcing fields (*.bin files)
1765     - new POLY3.COEFFS (for the next release one should switch to a full
1766       equation of state: JMD95P or MDJWF)
1767     - fixed several errors and redundancies in the data file
1768     - experiment uses looped cells
1769     - added matlab directory with diagnostic scripts for plotting of output
1770    
1771    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1772     - read AIM physics parameters from a file (data.aimphys)
1773     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1774    
1775    checkpoint46j_post
1776    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1777    o move wVel computation at the end of the time step, in S/R integr_continuity
1778    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1779    o update timeave pkg for wVel diagnostic.
1780    checkpoint46j_pre
1781    
1782    checkpoint46i_post
1783    o Clean up AIM package (and keep the results unchanged):
1784      include CPP_OPTION and use IMPLICT NONE in all routines ;
1785      declare all the variables _RL ; use _d 0 for all numerical constants.
1786      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1787    
1788    checkpoint46h_post
1789    o cleaned up the use of rhoNil and rhoConst.
1790      - rhoNil should only appear in the LINEAR equation of state, everywhere
1791        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1792        and the dynamical equations are all divided by rhoConst
1793    o introduced new parameter rhoConstFresh, a reference density of fresh
1794      water, to remove the fresh water flux's dependence on rhoNil. The default
1795      value is 999.8 kg/m^3
1796    o cleanup up external_forcing.F and external_forcing_surf.F
1797      - can now be used by both OCEANIC and OCEANICP
1798    checkpoint46h_pre
1799    
1800     Added code to convert surface volume flux (fresh water) into
1801     a mass flux when using P coordinates in the ocean (OCEANICP).
1802     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1803    
1804    checkpoint46g_post
1805    o Include a new diagnostic variable phiHydLow for the ocean model
1806      - in z-coordinates, it is the bottom pressure anomaly
1807      - in p-coordinates, it is the sea surface elevation
1808      - in both cases, these variable have global drift, reflecting the mass
1809        drift in z-coordinates and the volume drift in p-coordinates
1810      - included time averaging for phiHydLow, be aware of the drift!
1811    o depth-dependent computation of Bo_surf for pressure coordinates
1812      in the ocean (buoyancyRelation='OCEANICP')
1813      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1814        Theta, Salinity, and Pressure in the parameter list. This routine is
1815        presently contained in find_rho.F. This routine does not give the
1816        correct density for 'POLY3', which would be a z-dependent reference
1817        density.
1818    o cleaned up find_rho
1819      - removed obsolete 'eqn' from the parameter list.
1820    o added two new verification experiments: gop and goz
1821      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1822    checkpoint46g_pre
1823    
1824    checkpoint46f_post
1825    o Enable tangent linear (forward mode) gradient checks:
1826      - extended active file handling to g_... files
1827      - added TANGENT_SIMULATION to theSimulationMode
1828      - extended grdchk package accordingly
1829    o added tangent linear setup in verification/carbon/code_ftl
1830    o added adjoint setup in verification/front_relax/code_ad
1831    
1832    checkpoint46e_post
1833    o Added new equation of state -> MDJWF
1834      - EOS of McDougall et al., 2002, JAOT, submitted
1835      - caveat: the equation of state is only valid for a smaller (more
1836        realistic?) range of values than JMD95P/Z and UNESCO
1837      - added masks to the calculation of pressure in store_pressure
1838      - added more check values for density in check_eos (ini_eos.F), some of
1839        the old check values are out of the range of the MDJWF-eos, so don't
1840        expect perfect matches for those
1841    checkpoint46e_pre
1842    
1843    checkpoint46d_post
1844    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1845      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1846      case of pressure coordinates. eosType='JMD95Z' in
1847      combination with buoyancyRelation='OCEANICP' now causes an error.
1848    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1849      in find_alpha/beta.
1850    checkpoint46d_pre
1851    
1852    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1853      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1854    
1855    checkpoint46c_post
1856    o Changes necessary for ocean in p-coordinates
1857     -  Added new buoyancy relation = 'OCEANICP'
1858     -  Added new parameters = gravitySign (this used to be contained inside
1859        the factor dRdZ which I added when we first switched to R coordinates).
1860     X GM/Redi is not compatible (yet)
1861     X bottom drag and no-slip need to be debugged.
1862    checkpoint46c_pre
1863    
1864    checkpoint46b_post
1865    o Added new equation of state -> JMD95Z and JMD95P
1866      - EOS of Jackett and McDougall, 1995, JAOT
1867      - moved all EOS parameters into EOS.h
1868      - new routines ini_eos.F, store_pressure.F
1869    o Added UNESCO EOS, but not recommended because it requires
1870      in-situ temperature (see JMD95)
1871    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1872      unesco.f to be used with POLY3
1873    checkpoint46b_pre
1874    
1875    checkpoint46a_post
1876    o Added (atmospheric) pressure loading
1877      - new field in FFIELDS.h, etc...
1878      - new cpp flag ATMOSPHERIC_LOADING
1879    o Changed hFacC to _hFacC in calc_phi_hyd.F
1880    o Added SHORTWAVE_HEATING to some files for consistency
1881    checkpoint46a_pre
1882    
1883    checkpoint46
1884    further merges from release1_p5
1885    o new ctrl package
1886      - adopted from ECCO environment to enable optimization
1887      - added Eliassen Palm fluxes to controls
1888    o added Eliassen Palm flux controls to gradient check package
1889    o cost package
1890      - Compatible with new ctrl package
1891      - added Eliassen Palm cost hooks
1892      - modif's of existing cost functions
1893    o Adjoint-related bug fixes in kpp:
1894      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1895      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1896    o autodiff package
1897      - flow directives:
1898        + new for S/R do_the_model_io
1899        + enhanced for S/R checkpoint
1900        + new gmredi.flow
1901      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1902        disable adcommon.h/g_common.h by default.
1903      - fixed problem for adjoint of global_max
1904    o modified verification/carbon/
1905    o New setup for adjoint of global_ocean
1906    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1907    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1908    o incorporated hooks for sponge layer code (external_forcing.F)
1909    
1910    checkpoint45d_post
1911    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1912    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1913      (affects plume_on_slope "cg2d" output)
1914    o add new parameter deltaTfreesurf for free-surface time stepping
1915    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1916    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1917    o change phiMin in exp1 (to agree with documentation)
1918    o add new flags:
1919     - T,S forcing inside/outside Adams-Bashforth
1920     - turn off temp,salt advection and/or forcing
1921     - for each tracer, define internal flag for multiDimAdvection & A-B
1922    o monitor: change definition of KE to check conservation of Energy
1923    
1924    checkpoint45c_post
1925    o Removed f90 comments ("!")
1926    o Modified initialisations to enable exf package for MITgcm
1927      (without invoking ECCO_PACKAGE).
1928    o modifications to gradient check package (Martin Losch)
1929      - enable centered differences
1930      - modified format of standard output
1931    
1932    checkpoint45b_post
1933    o cleaned exchange calls in cg2d
1934    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1935    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1936      to configure barotropic setup (Martin Losch)
1937    o moved some initialisations within bi,bj loop in dynamics
1938      (TAF flow dependency)
1939    o in initialise_varia, moved call packages_init_variables
1940      before convective_adjustment_init
1941      (corresponding adjustment of TAF tape initialisation).
1942    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1943    
1944    checkpoint45a_post
1945    o compute Rho over the whole domain (extend iMin,jMin indices)
1946    o specific exchange for X-slice domain (case Ny=1)
1947    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1948    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1949    
1950    checkpoint44h_post = checkpoint45
1951    o Fix to restore differentiability:
1952      place at which packages_init_variables is called in
1953      initialise_varia is crucial for reverse control flow.
1954    o modifications in GMRedi to enable stable adjoint
1955      (corresponding modif's in thermodynamics, dynamics)
1956    o added missing hook for sponge layer code in external_forcing
1957    o modified test cost functions
1958    o storing in gad_advection (plus removal of write(0,*)!
1959    o missing headers TR1.h added in convective_adjustment routines
1960    o errorMessageUnit set non-equal zero in eeboot
1961      (conflict on some platforms, e.g. IBM SP3)
1962    o modified carbon verif.
1963    
1964    checkpoint44h_pre
1965    o vertical grid option: allow to put the Interface at the middle between
1966      2 cell-centers ; replace delZ in pkg/kpp by drF.
1967    o GM Advective form: Tracers are advected using the residual transport (=
1968      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1969    
1970    checkpoint44g_post
1971    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1972      results) ; ifdef missing in thermodynamics.F
1973    
1974    checkpoint44f_pre,checkpoint44f_post
1975    o added PTRACERS package
1976      This allows an arbitrary number of passive tracers to be integrated
1977      forward simultaneously with the dynamicaly model.
1978      + Implemented so far:
1979        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1980        - I/O and checkpointing
1981        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1982      + Not implemented so far:
1983        - KPP
1984        - OBCS
1985      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1986        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1987        line in data.pkg.
1988      + This package is disabled by default since it increases storage.
1989    
1990    
1991    o testscript: added -cleanup option
1992    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1993                 b) enable to filter 2D fields.
1994    
1995    checkpoint44e_pre,post
1996    o re-wrote convective adjustment to use pre-calculated weights
1997      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1998      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1999      Original calls to convect() still in place.
2000    
2001    chkpt44d_pre,post
2002    o added missing EXCLUDE_MONITOR flags
2003    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2004      (incompatible typ in MIN/MAX expressions caused problems
2005      on IBM SP3)
2006    o in genmake added variable MAKEDEPEND
2007      plus resetting for case SunOS
2008    o added timer_stats.c routine for IBM SP3
2009    o removed variables in dynamics
2010    !!! I forgot to create tag chkpt44d_pre !!!
2011    !!! But chkpt44d_pre = chkpt44c_post    !!!
2012    
2013    o real fresh water flux implemented with non-linear free-surface.
2014    
2015    chkpt44c_pre,post
2016    o few fix (mask in shap_s2, EmPmR in external_field_load,
2017      USE_NATURAL_BCS in solve_for_P);
2018    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2019    
2020    checkpoint44b_pre/_post
2021    o merge of relevant stuff from the ecco-branch:
2022      - genmake: removed $S64 overwrite for case SunOS
2023      - pkg/exf: update and corrections for field swapping and obcs
2024      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2025                  harmonized between ECCO and MITgcm
2026      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2027                      updated checkpointing_lev... lists for obcs
2028      - model/src: minor changes in forward_step, plot_field
2029                   added directive for divided adjoint in the_main_loop
2030      - pkg/mdsio: added mdsio_gl_slice
2031    
2032    o check parameters & config (chkpt44a_pre,post)
2033    o OBC and NonLin_FrSurf.
2034    
2035    checkpoint44
2036    o fix bug in mom_vi_del2uv
2037    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2038    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2039    o update AIM experiments (NCEP input files)
2040    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2041    o added some stuff for AD
2042    
2043    checkpoint43
2044    o added two new advection tests
2045    o added global 4x4 degree ocean test
2046    o added test of H&S94 with free surface on cube
2047    o some final mods for gradient check, adjoint,...
2048    
2049    checkpoint42
2050      Fixed AD-related problems:
2051    o Store directives up-to-date with re-arranged Adams-Bashforth
2052      (mainly thermodynamics.F)
2053    o New store directives for multi-dim. advection schemes
2054      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2055      * new common block and key passkey
2056      (mainly gad_advection.F)
2057    o Modified store directives for split of dynamics/thermodynamics
2058      for the case ALLOW_KPP
2059    o Cleaned argument list for timestep_tracer.F
2060    
2061    checkpoint41
2062    o re-formatted/added comments in prologues of key subroutines
2063      to work with protex
2064    
2065    checkpoint40
2066    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2067    o added FLT (floats) package from Arne along with demo. experiment
2068    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2069      implementation of forward-in-time forcing terms
2070    o more mods for non-linear free-surface including new variable
2071    o modified multi-dim method to work on cube
2072    o bug fix in KPP (from DM)
2073    
2074    checkpoint40pre9
2075    o added DST advection schemes
2076    o fix MPI bug on SGI's
2077    o modifications for non-linear free-surface
2078    o fixed conditionals for fixed flow/passive tracer only mode
2079    o added tension/strain form of stress tensor
2080    o changes to commenting of arguments for TAF/TAMC
2081    o added/updated many matlab scripts
2082    o added multi-dimensional advection method for tracers
2083      
2084    checkpoint40pre8
2085    o new package rw/
2086      Added method for dumping intermediate local arrays:
2087      mdsio_writetile - same as mdsio_writefield except works from inside
2088                        bi,bj loop
2089      mdsio_writelocal - same as mdsio_writetile except works for local
2090                         arrays
2091      write_local_r? - higher-level wrapper for mdsio_writelocal
2092      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2093      Example given at end of mom_vecinv.F that dumps some local arrays.
2094    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2095      control flux-form versus vector invariant code.
2096      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2097      or genmake -DISABLE ...
2098    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2099      (additional storing is now needed for case vecinv;
2100      currently nothing implemented to switch this storing off
2101      in case fluxform is used since no CPP flag available).
2102    
2103    checkpoint40pre7
2104    o bug fix in dynamics.F
2105      calc_viscosity called before k=1,Nr loop.
2106    o added some #ifdef's ALLOW_PASSIVE_TRACER
2107    o cleaned initialisations in ctrl_map_ini
2108      related to TAF
2109    
2110    checkpoint40pre6
2111    o split dynamics into thermodynamics & dynamics
2112    o corresponding split of calc_diffusivity into
2113      calc_diffusivity, calc_viscosity
2114      (kpp_calc_diff, kpp_calc_visc).
2115    o Added diffkr, kapgm to control variables
2116    o bug fix in gmredi_slope_limit for ldd97
2117    
2118    checkpoint40pre5
2119    o proper initialization of Adams-Bashforth time stepping
2120      + uses forward step for very first step of model (iter=0)
2121    o re-generated *all* output since almost all output is modified by this
2122      change (sorry but we've been putting this one off for about 2 years)
2123      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2124        *not* regenerated since they are already out of date and I don't
2125        want to create the impression that they are suddenly working.
2126    o removed KAP stuff for DEC's
2127    o modified/added many .cvsignore files in */code and */input
2128    o added new expt "solid-body.cs-32x32x1"
2129      + this uses an alternative form of ini_curvilinear_grid.F which
2130        is not necessarily any better than the current one...
2131    
2132    checkpoint40pre4
2133    o added re-initialisations of utrans,vtrans,rtrans in
2134      calc_common_factors which are crucial for TAF.
2135    o extended iMin,jMin range for calc_common_factors,
2136      calc_diffusivity
2137    o added option ALLOW_PASSIVE_TRACER
2138    o a few minor updates and fixes
2139    
2140    checkpoint40pre3
2141    o created calc_gtr1.F for gad package
2142    o split the_main_loop and re-introduced forward_step
2143    o some recomputations of nIter0 for TAMC
2144    
2145    checkpoint40pre2
2146    o Updated to latest branch of AJA, JMC
2147    o Added gradient check package
2148    o Added routines for passive tracer handling
2149    o Added carbon sequestration sensitivity experiment
2150    
2151    checkpoint39
2152     o Modifications and fixes to support TAMC
2153       (mainly missing or wrong directives)
2154     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2155       in addummy_in_stepping
2156     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2157     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2158     o Included following packages:
2159       cal: calendar
2160       exf: external forcing
2161       ecco: essential routines to control use of cal, exf
2162             (NB: this is not the full ECCO environment)
2163     o disabled some packages by default in genmake
2164    
2165    checkpoint38
2166     o see notes_c37_adj.txt
2167     o corrected wrong layer index in external_forcing_t
2168     o replaced the_main_loop/forward_step by the_main_loop
2169     o removed forceoutput from write_state
2170       (replaced criteria for initial/final state)
2171     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2172    
2173    checkpoint37
2174     o mdsio.F routine split and packaged in pkg/mdsio
2175       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2176        used unless genmake -disable=mdsio)
2177     o allow a more precise surface-geopotential gradient for the atmosphere
2178       taking into account the change in space of Alpha (=1/rho) at the surface.
2179     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2180       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2181     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2182       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2183       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2184     o Time-Average diagnostics defined as a pseudo package "timeave".
2185     o pickup files : old pickup (before c35) did not work with new code (c35
2186       and after) unless activating 2 commented lines in initialise-varia.
2187     o Non-Hydrostatic pickup file Pb fixed.
2188     o bug with Rigid-lid version (since c35) fixed.  
2189    
2190    checkpoint36
2191     o implement Crank-Nickelson barotropic time-stepping
2192     o recover Time-Average diagnostics
2193     o fix Pb in checkpoint (PR#19)
2194     o AIM become a standard package ; clean unused CPP_kees
2195    
2196    checkpoint35
2197     o subtantial rewrite of dynamics.f
2198     o allows staggered time-stepping
2199     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2200     o added bottom drag (linear + quadratic)
2201    
2202    checkpoint34
2203     o Modified exchange routines for correct reverse simulation.
2204     o Added verification output to comply with bug fix in impldiff.F
2205       as of c33 (exp2, natl_box).
2206     o Corrected store directives in dynamics.F
2207     o Corrected array boundaries in impldiff.F
2208     o Corrected array dimensions in gmredi.
2209       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2210     o Added routine GLOBAL_SUM_INT to global_sum.F
2211     o Added mdsio_gl.F for ECCO purposes.
2212    
2213  checkpoint33  checkpoint33
2214   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
2215   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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