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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.534 by heimbach, Fri Aug 19 23:49:45 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    checkpoint57q_post
8    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
9    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
10      - bug was reported by Jean-Michel and Ian Fenty
11    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
12      update exp. cpl_aim+ocn output.
13    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
14      Needed for high-res. runs with large global files
15      to be able to limit tapelev size
16    o Changed some tests for adjoint:
17      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
18      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
19      * global_ocean.90x40x15/ back to default 3-level checkpointing
20    o Modifications to enable scripted COMMON to MODULE conversion
21      * verification/OpenAD/code/ has necessary scripts and description;
22      * converts, compiles and runs successfully;
23    
24    checkpoint57p_post
25    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
26    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
27      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
28    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
29    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
30      (was already the case for dissipation with mom_vecinv,
31       and also the case for grad.PhiHyd when staggered-timeStep)
32      This will allow to put dissipation out-off the AB time-stepping.
33     Unfortunately, affects truncation error. Update output of exp. that "fails"
34      (cg2d matching number) and leave the others for later: front_relax(10),
35      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
36      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
37    
38    checkpoint57o_post
39    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
40      (2) its ready to be documented during the 20050801 DocFest
41    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
42      for ideal_2D_oce and lab_sea on linux_ia32_g77
43    o set to #undef CTRL_SET_OLD_MAXCVARS_30
44      in global1x1_tot/code_seaice_adj to access indices 32, 33
45      (worth another tag)
46    
47    checkpoint57n_post
48    o adding precip control xx_precip 32
49    o adding swflux control xx_swflux 33
50    o Replacing 10 forcing penalty cost routines by 1 generic.
51    o Implementing partitioning in time-mean and variable adjustment
52      for atmos. state.
53    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
54    o in natl_box_adjoint:
55      * updated exp 1 to 10
56        (but does not have time-mean vs. variable split results yet)
57    o updated global1x1/*_seaice_adj/
58      to incorporate latest changes
59    o enable useSingleCpuIO for mdsio vector routines
60      (applies in particular to tapelev I/O)
61    o removed inefficient K-loop in all active_file*control*.F
62    
63    checkpoint57m_post
64    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
65      and advect_cs (use EXCH-2 and standard cs-32 grid files).
66    o pkg/exch2: filling of face-corner halo regions is optional
67      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
68    
69    checkpoint57l_post
70     tag before updating tutorials (pre-release-2)
71    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
72       for output and interpolation of input fields onto model grid)
73    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
74       Affects results of exp. rotating_tank ; update output.txt.
75    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
76          and taking the square quantity and/or using a fraction-weight field.
77    o fix aim_diagnostics_init.F mate numbers.
78    o add mnc output capability to diagnostics/diagstat and update
79      our cvsignore files for the ACSII output generated
80    
81    checkpoint57k_post
82    o lab_sea now uses diagnostics package and provides a suite of
83      new EXF diagnostics output.
84    
85    checkpoint57j_post
86    o exf
87      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
88        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
89        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
90      * extended diagnostics output
91        - now includes all EXF variables
92        - hs, hl moved to common block
93        - separate S/R for diagnostics, called after ctrl vector is added
94        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
95        - EXFqnet contains true Qnet (i.e. includes qsw)
96      * updated verif. lab_sea, global_with_exf
97      * Rearranging hflux (exf_mapfields -> exf_getforcing)
98        to ensure that diagnostics sees a true EXFqnet
99    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
100    o diagnostics pkg: change pointers so that 1 diagnostic can be used
101      several times with different frequencies.
102    o mnc-ify the thsice package as requested by Daniel Enderton
103      - the monitor--MNC output needs work
104      - many attributes need to be added (most are currently blank)
105    o mnc-ify theaim_v23 package as requested by Daniel Enderton
106      - many attributes need to be added (most are currently blank)
107    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
108    o add Sadourny like discretization to the 4th.O vorticity advection scheme
109    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
110      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
111         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
112    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
113     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
114    
115    checkpoint57i_post
116    o Diagnostics package was changed: diagnostic allocation is now deactivated
117      by setting an empty file name in the namelist (used to be by setting 0 frequency)
118    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
119      add 1rst Order upwind vertical Shear.
120    o add a quick fix for A/B checkpointing in OFFLINE mode
121    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
122      end-run around the C/Fortran linking horror in eesup/src/timers.F
123    o added pkg/runclock: allows user to terminate run based on wall clock
124    o added non-hydrostatic scaling parameter: nh_am2
125    o pkg/my82: futile attempt to make results compiler-independent by adding
126      some "_d 0", etc. no effect.
127    o for mnc output, fill the 'T' coordinate var with myTime and create a
128      separate 'iter' variable for iteration count
129    o pkg/diagnostics:
130      add new capability: output of Global/Regional & per-level statistics ;
131      tested against monitor output (including land & thSIce) on various exp.
132    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
133    
134    checkpoint57h_done
135      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
136      data.diagnostics, data.gchem, data.ptracers) is done.
137    
138    o pkg/diagnostics: prepare for Global/Regional statistics.
139      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
140    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
141      and rename it: DIFFERENT_MULTIPLE
142    
143    checkpoint57h_post
144    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
145    o pkg/diagnostics: change output frequency, now in seconds (instead
146      of Nb of iterations). This requires to change data.diagnostics.
147    checkpoint57h_pre
148    
149    o in mnc, let the user create the output dir if both mnc_outdir_date
150      and mnc_outdir_num are false
151    o add fflags() to pkg/diagnostics which allows one to specify, on a
152      per-file basis, the file precision [default behavior is unchanged]
153    o added diagnostics to pkg/kpp, including computation of mixed layer
154      depth based on a temperature/density criterion
155    o updated verification/natl_box to test the new pkg/kpp diagnostics
156    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
157    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
158    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
159      not mnc -- this mistake was found by JMC and is now corrected
160    
161    checkpoint57g_post
162    o add Adams-Bashforth 3rd Order time stepping:
163      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
164      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
165    checkpoint57g_pre
166    
167    o make lambda[Theta,Salt]ClimRelax spatially varying
168      (default remains spatially uniform constant based on tau)
169    o added new control variables
170      * init. uVel, vVel, etanN
171      * lambda[Theta,Salt]ClimRelax
172    o separate masks used for ctrl_pack/unpack 'from write_grid' output
173      (suggested by G. Forget)
174    
175    checkpoint57f_post
176    o add parameter "baseTime" = model base time = time at iteration zero
177      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
178      account for baseTime shift
179    o move Coriolis arrays from PARAMS.h to GRID.h
180    checkpoint57f_pre
181    
182    o mnc-ifying the seaice package
183    o introduced an alternative length scale calculation for use in the limiting
184      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
185    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
186    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
187      as well as grad(vort3).  Made it compatible with both approximate form
188      for the cubed sphere and full form of these gradients.  Added flag
189      useFullLeith to select between approximate and full form.  
190    o add "d0" in getcon.F to reduce differences between compilers/platforms
191      update output.txt of exp. fizhi-gridalt-hs
192    o change port_rand funtion to allow to set the seed.
193    o fix obscure MNC bug involving conversion between reals and integers
194      - it caused no problems with certain (eg. gcc, ifc) compilers but the
195        new version is now more standards-compliant
196    o adjoint-related modifications
197      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
198      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
199      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
200    
201    checkpoint57e_post
202    o Adding eddy stress controls a la Ferreira et al.
203    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
204    
205    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
206      update output.txt of exp. fizhi-gridalt-hs
207    o add more "Z" dimensions and associated coordinate vars to MNC
208    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
209    o parameter calendarDumps: when set, approximate months (30-31 days) and years
210      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
211      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
212      months and years.  Requires pkg/cal.
213    o diagnostics: add pickup functionality
214      - off by default for backwards compatibility
215      - current version only uses MDSIO -- MNC will be added
216    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
217    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
218    
219    checkpoint57d_post
220    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
221    o modify verification/ideal_2D_oce so that it tests the creation of mnc
222      output from the diagnostics package
223    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
224    o make genmake2 more portable by using ".$FS" instead of ".f" for more
225      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
226    o add coordinate variables to the MNC output from the diagnostics package
227    o change MNC-flags default value: true when useMNC=TRUE
228    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
229      the ability (off by default) to read the grid information using MNC
230    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
231    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
232    o do snap-shot diagnostics at the middle of the time-interval (instead of
233      at the end).
234    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
235      new test for AIM with thSIce + slab-ocean
236    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
237    o move state variable diagnostics to the beginning of the time step ;
238      (note: still needs some work specially for snap-shot diagnostics)
239      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
240    
241    checkpoint57c_post
242    o Change testing option (-ieee) to get closer agreement between g77 & ifort
243    o generate new output.txt files on faulks with g77 & the new -ieee option
244    checkpoint57c_pre
245    
246    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
247      update output.txt of exp. global_ocean.90x40x15
248    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
249      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
250    o add saltFlux(+File) forcing capability with periodicExternalForcing
251    o allow to use pkg diagnostics for GM-Redi & ThSIce output
252    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
253    o improvements for the MNC output from DIAGNOSTICS:
254      - correct handling of the unlimitied dimension
255      - all dims now have associated coordinate variables
256      - variables located at U, V, and Corner ("Z") points are now written
257        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
258        *all* data points are output
259    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
260    o added pkg/seaice/seaice_monitor.F
261    o mdsio_readfield.F can now read files visible only to master MPI process.
262    o pkg/seaice: some test code for ice-modified ocean stress
263    o exf_getffields interpolation defaults to bilinear for all scalar forcing
264      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
265      spurious negative numbers for precipitation and humidity.  Will cause
266      some small numerical differences for integrations using pkg/exf/exf_interp.F.
267    o pkg/ctrl/
268      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
269        May be enabled via doPackDiag
270      *  introduce z-scaling of
271         + gradient (doZscalePack) and
272         + control (doZscaleUnpack)
273    o pkg/mdsio/
274      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
275      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
276    
277    checkpoint57b_post
278    o simplify options in diagnostics_fill arguments (remove weird combinations)
279    o fix MNC coordinate variables so that they now contain per-face index
280      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
281      general, EXCH2 grids are only aligned to a "local" coordinate system
282    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
283    o Implement instantaneous output within pkg diagnostics:
284      setting a negative frequency in data.diagnostics produces
285     "snap-shot" output (as opposed to time-average if freq > 0)
286    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
287      NOTE: change ptracer diagnostics name: use 2 characters to work with
288            more than 9 tracers. Add also diagnostics of advect & diffus flux.
289    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
290      becomes the coordinate variable for the 'T' dimension
291    o add CF-style coordinate variables to MNC
292      - just a first cut:  numbers are meaningless on the cubesphere and
293        missing along the T axis but otherwise it works!
294    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
295    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
296    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
297      this is based directly on what the model compute, so that the content of
298      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
299    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
300    o clean up build options files for SunOS, in particular
301      - remove -traditional from xmakedepend
302      - change -xarch=v9 to -xarch=native for f77
303      - restore use of make (not gmake)
304      - add CC=gcc if using g77
305    o changes per discussion of AM, JMC, & EH3 today:
306      - move redundant "grid" variables out of "state" -- in preparation of
307        creating proper CF-style coordinate variables and in recognition
308        that any/all grid variables can be easily copied (eg. w/NCO) from
309        the grid files into any of the other NetCDF files
310      - *always* output grid variables with MDSIO (this will eventually be
311        changed)
312      - output MNC grid file if useMNC is true
313    o every instance of _END_MASTER() has been found and replaced with
314      _END_MASTER( myThid ) in order to satisfy certain picky Sun
315      preprocessors
316    o re-arrange diagnostics pkg initialisation:
317     - allow each package to extend the available diagnostics list
318     - add some checking and fix small problems (multi-threaded, ...)
319     - new S/R diagnostics_fill (replace fill_diagnostics):
320       look through the short list of active diag. (instead of the long list)
321       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
322    
323    checkpoint57a_post
324    o this set of changes restores TAMC compatibility
325      tested for global_ocean.90x40x15 adjoint on trough
326      (what a pain)
327    
328    checkpoint57a_pre
329    o some modifs in tools/build_options for sunos
330    o call ctrl_pack for ctrl at end for optimcycle=0
331    
332    checkpoint57
333    o add horizontal bi-harmonic viscosity for vertical velocity
334      - new parameter viscA4W (defaults to viscA4)
335      - affects only non-hydrostatic code
336      - to be done: no-slip lateral boundary conditions
337    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
338    o implement Implicit Vertical advection for pTracers
339    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
340      (implemented also for implicit vertical diffusion & advection)
341    o OBCS: extend application of tracer open boundary conditions
342      to a strip beyond the boundary of width Olx/Oly
343    o add call monitor to TAF set of required calls (flow directives)
344      and include in natl_box_adjoint
345    o untangle a few ifdefs related to cost, ctrl, autodiff
346      untangel a few ALLOW_ECCO_OPTIMIZATION
347    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
348      (theta2, salt2 in ecco_cost_weights)
349    
350    checkpoint56c_post
351    o OBCS as control variables
352      - update ctrl_ad_diff.list, obcs_ad_diff.list
353      - remove balance of obcs controls from default
354      - fix index bug nobcs in ctrl_init
355      - fix dummy fields filen in ctrl_pack
356      - add dummy weights for obcs
357    o lsopt: comment out fort.94 output
358    o optim:
359      - remove unnecessary header files
360      - adjusted namelists
361      - add xerbla.F to Makefile
362    o exf:
363      - multiple modifications of exf_check_range
364      - unit change in exf_init_runoff from [m/year] to [m/s]
365    o mdsio:
366      - i/o-vector change debugLevel from debLevA to debLevB
367    
368    checkpoint56b_post
369    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
370      is called from DO_THE_MODEL_IO
371      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
372      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
373      - clean up PTRACERS_WRITE_TIMEAVE a little
374    o add another verification experiment that tests both the cfc-pkg and
375      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
376      reactive tendencies treated inline with regular timestepping
377    o testreport previously did a lousy job of comparing small numbers, so
378      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
379      implemented in the little c-progam tmp_cmpnum.c which is embedded in
380      testreport.
381    o ptracers_monitor: bug fix for MPI
382    
383    checkpoint56a_post
384    o GCHEM: finish reorganizating the package
385      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
386        (introduces another 3D-array for each passive tracer, but only if
387        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
388        gchemTendency is not needed because the timestep is done separately)
389      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
390      - GCHEM is now---more or less cleanly---separate from PTRACERS
391      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
392        so clear to me how that should be done in a general way.
393    o CFC: improve formatting of output in CFC_ATMOS
394    o PTRACERS:
395      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
396        that ALL experiments with ptracers enable can be checked. This makes
397        GCHEM_MONITOR obsolete.
398      - include a runtime parameter PTRACERS_monitorFreq that defaults to
399        monitorFreq
400      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
401    o add PTRACERS (PTR0[1-5]) to testreport output
402    o exf_check_range:
403      * default changed to .TRUE.
404      * will check values for niter0 if debLevA, every timestep if debLevB
405      * STOP in exf_check_range if 'out of range'
406      * range chosen generous to allow for potential extema
407      TBD: a version with stricter range
408           permitted range would be runtime parameters
409    o GMredi:
410      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
411      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
412      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
413    o GCHEM:
414      - move call to GCHEM_FORCING_SEP, so that it is now called before
415        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
416      - introduced a useGCHEM runtime flag and applied it everywhere.
417      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
418        this flag is now only visible within GCHEM-pkg routines.
419      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
420        be replaced by a 3D array that is computed before thermodynamics; for
421        this, the tracer ID iTracer had to be included into the parameter list
422        of ptracers_forcing
423      - set up forward_step to call gchem_forcing, that will replace
424        gchem_forcing_int in ptracers_forcing
425      - cleaning up
426    o small cleaning of exch2: remove files that are also in eesupp/src
427    
428    checkpoint56
429    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
430    o mnc: cleanup "full" files--fixes out-of-memory problem
431    o ECCO-GODAE
432      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
433      * fully merged and updated from SIO code
434        windstress sign change affects
435        - exf_inscal_[u/v]stress
436        - sign of xx_tau[u/v] adjustments
437        - signs in cost_scat
438      * ctrl_get_gen: avoid update of tau[u/v] for first few days
439      * natl_box_adjoint updated and compressed
440      * 2-level checkpoint switch added
441        (tested in EXP. 1 of natl_box_adjoint)
442      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
443    o SVD
444      * first complete, non-hacked version for SVD calculations
445      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
446        performed via direct access files admtlm_vector.it????
447        (via ctrl_[un]pack)
448      * optimcycle is used for ARPACK iteration counter
449        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
450      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
451        and add linear transforms where necessary
452      * controls are initial/final SST, SSS (can be extended; need to check
453        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
454    o mdsio: filename info to both stderr, stdout
455    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
456      from sign change
457    
458    checkpoint55j_post
459    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
460      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
461    o add consistent build directories and .cvsignore files to verification
462    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
463    o make all subroutines 30 or less characters in length for certain older
464      compilers to work (a thorough search only turns up two routines in
465      pkg/ptracers)
466    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
467      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
468    
469    checkpoint55i_post
470    o change arrays for total vertical diffusivity (2.D if explicit,
471      3.D if implicit) ; each ptracer uses its own background value.
472    o added mnc/NetCDF output capability to ocn_compon_interf
473      - added bits to verification/cpl_aim+ocn so that it can run on
474        ITRDA and other clusters without the mpirun "-wd" option
475    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
476      configuration
477    o give MNC the ability to create additional files rather than
478      exceeding a specified file size limit "MNC_MAX_FILESIZE"
479      - the default is just less than 2GB which is a practical limit
480        on many systems
481    o Compute the non-local term using either KPP vertical diffusivity (=default)
482       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
483    
484    checkpoint55h_post
485    o add verification test "vermix"
486    o remove all the *_ioinc flags and replace with the single global
487      outputTypesInclusive flag
488    o allow to set a vertical profile of vertical diffusivity for T & S
489    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
490    o useMNC moved from data.mnc to data.pkg
491    
492    checkpoint55g_post
493    o Renaming carbon AD experiments to comply with testreport conventions
494    o Updating adjoint of Held-Suarez hs94.1x64x5
495    o Fixing directives for non-ECCO forward_step, after ECCO directives
496      have been fixed to avoid recomp. of do_oceanic_phys
497      Works well for global_ocean.90x40x15,
498      but recomp. issue remains for carbon
499    o Updating adjoint output for natl_box_adjoint after
500      pkg/ecco has been modified (see taga c55d_post)
501    
502    checkpoint55f_post
503    o rename to timeave_init_fixed
504    
505    checkpoint55e_post
506    o some delicate re-shuffle of store directives to avoid one
507      extra call of do_oceanic_physics
508      affects ecco_the_main_loop.F, do_oceanic_physics.F
509      checkpoint_lev1_directives.h
510    o NB: this may break global_ocean adjoint temporarily,
511      but it is clear how to fix it. Will do later, need this now.
512    
513    checkpoint55d_post
514    o ECCO specific cost function terms (up-to-date with 1x1 runs)
515    o ecco_cost_weights is modified to 1x1 runs
516    o modifs to allow observations to be read in as
517      single file or yearly files
518    o enable to read exf forcing fields as either
519      single file or yearly files (flag useExfYearlyFields)
520    checkpoint55d_pre
521    
522    o switch between 2-level and 3-level checkpointing
523    o add ability of MNC to write local and "partial" (eg. 2D slices where
524      the full 3D field is never actually stored) arrays to NetCDF files
525      with the correct (that is, the complete multi-dimensional) set of
526      array indicies
527      - used in mom_vecinv() to write the diagFreq output
528      - tested (demonstrated) in verification/aim.5l_cs
529    o further mnc-ification
530      - add verification/lab_sea to the list with mnc setups
531      - fix undefined mnc v-names in cd_code
532      - add kpp to mnc output (both snapshot and timeave)
533    o non-hydrostatic code
534      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
535        in calc_gw.F
536      - defaults to viscAh
537      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
538        friction or Leith) in non-hydrostatic mode, as long as there is
539        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
540    o pkg/cost
541      extend simple cost functions to treat time mean quantities
542      (T,U,V) via cost_accumulate_state from cost_tile
543    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
544        be 2 times larger than the minimum size the advection scheme requires.
545        now get a perfect conservation of salt in advect_cs test-exp (updated)
546    o GGL90 (Gaspar's TKE mixed layer)
547      - add horizontal diffusion of TKE, requires exchanges in
548        do_fields_blocking_exchanges, horizontal diffusivity is zero by
549        default. In OPA there is no horizontal diffusion of TKE but the
550        mixing coefficients are computed from a horizontal average of TKE of
551        6 points or so. I think that diffusion has a little more physical
552        justification.
553      - clean up ggl90_calc in the hope of reducing memory usage (this hope
554        was in vain)
555      - mask tke-variable in ggl90_init
556    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
557    o fix biharmonic diffusion on CS-grid.
558    o more obcs stuff
559      - added obcs_external_fields_load as an alternative to the EXF-pkg option
560        for reading boundary values. This routine is called from
561        obcs_prescribe_read
562      - updated obcs_check
563      - changed sponge layer relaxation parameter units for days to seconds
564      - turned off sponge layer by default
565      - changed argument list of OBCS_CALC to myTime+deltaTclock
566      - fixed about 35 bugs in obcs_external_fields_load
567    
568    checkpoint55c_post
569    o obcs stuff
570      - new runtime flags useOBCSprescribe, useOBCSbalance
571      - re-arranged obcs_calc
572      - moved exf_getobcs to obcs_prescibe_read
573        obcs_prescibe_read is called after ORLANSKI stuff
574        and independent of it (executable can contain all).
575      - updated obcs_check
576      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
577        These may be necessary only if tangential velocities are
578        prescribed at OB, not sure, needs testing.
579    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
580      which simplifies the calls and passes the ifc check-bounds test
581    
582    checkpoint55b_post
583    o add a 2D scalar, Z location, exchange_2 routine.
584    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
585      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
586      affects advect_cs results (for the wrong reason): update output.txt
587    o use a more standard discretization for biharmonic viscosity ;
588     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
589      affects results of dome set-up: update output.txt
590    o fix gad_advection.F (CubedSphere part), back to version 1.23
591    o fix bug in mom_vi_del2uv.F (CubedSphere part).
592    
593    checkpoint55a_post
594    o merged code to
595      * prescribe/read time-dependent open boundaries
596        (works in conjunction with exf, cal)
597      * sponge layer code for open boundaries
598      * each boundary N/S/E/W now has its own CPP option
599        (healthy for the adjoint)
600    
601    checkpoint55
602    o up-to-date adjoint of previous breaks
603      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
604      - global_ocean_ebm: adjoint still needs fix (TLM ok)
605      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
606      - carbon: * remove tr1-related adjoint verification
607                * add ptracer as control variable
608    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
609      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
610    
611    checkpoint54f_post
612    o in verification/carbin/ remove experiment related to
613      ALLOW_PASSIVE_TRACER (array tr1 etc)
614      code_ad/ input_ad/ results_ad
615    
616    o add two new packages
617      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
618        + subject to optimization (memory)
619      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
620        + subject to reordering (many GOTOs in the original code)
621        + so far opps is called for every (i,j) point, and then operates in
622          the vertical; one may want to reorder the scheme in order operate in
623          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
624          fields)
625    o overhaul of IO so that we now have flags for MDSIO and/or MNC
626      - all verification tests compile and run with linux_ia32_g77
627      - defaults are compatible with current input files--nothing
628        should change if you were not previously using MNC
629      - MNC output has been added in numerous places (eg. timeave)
630        but there are still a few writes not yet do-able with MNC
631        (this is in progress)
632      - flags now allow for either/or/both use of MDSIO and MNC and
633        documentation will soon follow
634      - numerous small formatting cleanups for ProTeX
635    o add version info (via BUILD_INFO.h) to MNC and stdout
636    
637    checkpoint54e_post
638    o add two new packages
639      - pp81 (Packanowski and Philander, 1981), Richardson number and
640        stratification dependent mixing
641      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
642      - these scheme operate in a similar manner as KPP (without ghat, of
643        course), however there is only one diffusivity that is used for both
644        temperature and salinity (and passive tracers)ç
645    o add offline package
646    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
647      provided by Stephanie Dutkiewicz
648    o genmake2: add ability to search for C compilers and cleanup test output
649      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
650    
651    checkpoint54d_post
652    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
653    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
654      leading to additional shift by 5 days each year of integration
655       (i.e. leading to considerable offset over the years)
656    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
657    o start with no AB and no initial filtering (staggerTimeStep):
658      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
659    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
660      (external loading & cpl import/export stay in forward_step.F)
661    o update coupling interface to work with new staggerTimeStep
662    o change MDSIO ptracers_pickup.
663    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
664    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
665    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
666    
667    checkpoint54c_post
668    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
669      this affects (truncation error) output.txt of test-exp:
670       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
671    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
672    o change Qnet to always be the net heat flux, (+upward).
673      affects (truncation error) output of natl_box exp.: updated
674    o define the max number of passive tracers in PTRACERS_SIZE.h
675    o start to test mnc routinely in exp0
676    o add sea-ice loading (sIceLoad) as a new forcing field.
677    
678    checkpoint54b_post
679    o add testreport "-j JOBS" option for parallel builds (tested and pretty
680       impressive on Altix and Opteron systems)
681    o diagnostics can now write NetCDF files through the mnc package
682    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
683    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
684    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
685      affects (truncation error) output of lab_sea & natl_box exp.: updated
686    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
687    
688    checkpoint54a_post
689    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
690    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
691    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
692    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
693      + internal_wave (shift in writing cg2d_ini_res)
694    checkpoint54a_pre
695    
696    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
697      - modified verification/lab_sea and natl_box_adjoint accordingly
698    
699    checkpoint54
700    checkpoint53g_post
701    o prepare splitting of thermodynamics: store convect.counter in common block
702    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
703      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
704    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
705    o new parameter "nShapS": allow to treat differently S from T (nShapT)
706    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
707    o restore adjointability
708    
709    checkpoint53f_post
710    o modifications that affect AIM experiment results (update output.txt):
711      - no advection of S at top interface Nr (pkg/generic_advdiff)
712      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
713    o AIM pkg:
714      - include stability function into surf.Flux derivative relative to Tsurf
715      - calculate clear-sky radiation & surface temp. change (for diagnostics)
716    
717    checkpoint53e_post
718    o merged cylindrical coord configuration
719    o added rotating_tank experiment
720    checkpoint53e_pre
721    
722    checkpoint53d_post
723    o faulks upgraded: re-generate output.txt that have changed:
724       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
725    o Added Bryan and Lewis, 1979, vertical diffusivity profile
726    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
727    o added Sadourny discretization of Coriolis
728      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
729      - re-enabled use of omega3 (useAbsVorticity)
730    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
731      vector-invariant equations
732      - note: does *NOT* yet use same variable visc. for no-slip BC's.
733    o recoded the lateral boundary conditions for non-hydrostatic w, this time
734      hopefully without new bugs
735      - still to do: biharmonic friction for non-hydrostatic w
736    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
737    o regenerated output for global_ocean_ebm (using -ieee)
738    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
739      of mom_common/
740      - simple re-arrangement of instructions within computing loop
741    checkpoint53d_pre
742    
743    checkpoint53c_post
744    o new version of coupler for AIM+thSIce and Ocean models
745     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
746     - land: change Evaporation of snow
747     - aim with thSIce: fix bug in snow-precip.
748    o changes to calc_gw.F
749     - bug fix for w^2 term near the bottom boundary
750     - (hopefully) improve the lateral slip boundary condtions for use with
751        partial/looped cells
752      - because the bug fix changes two verification experiments anyway (exp5
753        and plume on slope), change the lateral boundary condition from half slip
754        to the value of no_slip_sides
755    o ebm package wasnt quite up to the parallel task. Fixed that.
756    o Adjoint of EBM package + verification
757      * TLM OK
758      * ADM not sufficient accuracy yet (needs further testing)
759    
760    checkpoint53b_post
761    o Commiting new energy balance model to repository
762      * package is pkg/ebm
763      * verif. is verification/global_ocean_ebm
764      * references are in ebm_driver.F
765    C      * X. Wang, P. Stone and J. Marotzke, 1999:
766    C        Global thermohaline circulation. Part I:
767    C        Sensitivity to atmospheric moisture transport.
768    C        J. Climate 12(1), 71-82
769    C      * X. Wang, P. Stone and J. Marotzke, 1999:
770    C        Global thermohaline circulation. Part II:
771    C        Sensitivity with interactive transport.
772    C        J. Climate 12(1), 83-91
773    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
774    C        Destabilization of the thermohaline circulation
775    C        by atmospheric eddy transports.
776    C        J. Climate 7(12), 1870-1882
777    o Will need long integration testing.
778    checkpoint53b_pre
779    
780    o created pkg/mom_common in preparation for variable viscosity code
781    o renamed and split ini_mnc_io
782    o pkg/land: only liquid water can diffuse or run-off
783    o AIM using land: soil wetness availability account for snow
784    o added printMapIncludesZeros to EEPARMS namelist
785    
786    checkpoint53a_post
787    o restore TAMC compatiility for exf_constants.h
788      (no usage of _d in .h)
789    o Additional storing in KPP in an attempt to fix
790      TAMC problem with adjoint of KPP code.
791      (no success...)
792      Identical code works fine with TAF.
793    o Fixed verification/natl_box_adjoint experiments.
794      Initial conditions for Experiments 4 and 5 are now
795      set to "SEAICE_initialHEFF=0", which is more reasonable,
796      and hence gives results closer to that of Experiment 2.
797      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
798    
799    checkpoint53
800    o stable checkpoint with up to date adjoint
801      TLM tests only run for 1st grdchk at the moment. Its unclear if
802      this is a code problem or a problem with resetting code for g_
803      variables that is being autogenerated wrong.
804      Otherwise:
805       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
806       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
807         are both still in chaos following their security messes.
808    
809    checkpoint52n_post
810    o various build (mostly genmake2) changes including:
811      - ability to build/run more easily within Cygwin and MacOS X
812      - more complicated Makefiles with a stronger dependence on Gnu Make
813    o pkg/seaice modifications
814      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
815        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
816        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
817      - changed proxy for geostrophic velocity and updated
818        verification/lab_sea/results/* accordingly
819      - removed ADI dynamic solver from pkg/seaice
820      - replaced all occurrences of 1/CSTICE or 1/CSUICE
821        they caused a segmentation fault under certain circumstances
822      - removed unused field WATR
823    o bug fix in exf-package:
824      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
825         now reflect that.
826    o small fixes in the cal-package:
827      - set reference date to first of January for the 'model'-calendar
828      - failing of cal_CheckDate in cal_FullDate now actually results in a
829        warning
830    o small modifications in exf-package to increase flexibility:
831      - change climtempfreeze from a constant to a runtime parameter that
832        is specified in data.exf_clim (default = -1.9)
833      - introduce runtime parameter windstressmax (default = 2.0) that is
834        specified in data.exf
835    o fix in pkg/thsice:
836      - update Evap (Tsf changes) to be consistent with Latent heat flux
837      - maintain snow precipitation unchanged (even if Tsf >=0).
838     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
839    
840    checkpoint52m_post
841    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
842      this does not change any of the results, because myIter=0 in swfrac always
843      lead to jwtype=2 (the default anyway), but the call makes little sense
844      as a default
845    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
846    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
847      atmospheric model (AIM) to use it ; add a "slab ocean" component.
848    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
849    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
850    o extending useSingleCpuIO option to work with new exch2 I/O format
851      - old-style, missing-tile I/O is still accessible by defining CPP
852        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
853    o monitor package can write to NetCDF files and/or STDOUT
854    o fix re-definition bug in MNC_GRID_INIT_ALL()
855    o doc/api_reference added
856      - a framework for building an API Reference Manual using all
857        the "protex" comments embedded in the code
858      - see pkg/generic_advdiff, pkg/mnc for examples
859    o MNC:
860      - make myThid the last argument for all subroutines
861      - new default for the grid files: NO halos
862      - add useMNC and other run-time flags
863      - separate per-file-group handling of the unlimited dimension
864      - early initialization of MNC w/ flags read at the eeboot stage
865        and lookup tables set in initialize_fixed
866      - write all MNC output to a freshly-created directory
867    o thermodynamics sea-ice (thsice) is now tested with testreport.
868    o test exp. advect_cs: use the standard cs32 grid ; update output.
869    o Added functionality to grdchk:
870      pick global i,j,k position (or nearest wet) where to perform check.
871    
872    checkpoint52l_post
873    o new land formulation:
874      a) use ground enthalpy as prognostic variable to ensure exact
875         energy conservation.
876      b) account for water temperature and for latent heat of freezing
877         in all processes (rain, run-off, ground storage)
878      c) compute surface and ground temperature implicitly.
879    o aim_v23 modification for new land model:
880      a) Treat separately land / ocean / sea-ice surface fluxes
881         to allow implicit computation of land & sea-ice surface temp.
882      b) add snow precipitation.
883    checkpoint52l_pre
884    
885    o fix problem (when 1 tile is empty) in min/max monitor.
886    o fix bug in timeAve (u,vZetatave in common block)
887    o no restoring terms under ice for pkg/seaice
888    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
889    o bug fix for pkg/seaice pickups
890    o change MNC call locations and add coordinate attributes
891    o mask vorticity at the corner ; affects global_ocean.cs output
892    o fix ini_curvilinear_grid ; test CS experiments with mpi
893    o aim.5l_cs: modify sea-ice fraction input file ; update output
894    o exf: Adding simple range check routine for exf fields after read
895    
896    checkpoint52k_post
897    o removed top-level directory "diags"
898      - we migrated these functions to pkg/timeave a long time ago
899    o fixed bug introduced in pkg/monitor
900    o accuracy ctrlprec = 32 insuffient for gradient checks using
901      averaged fields (I/O via cost_averages)
902      -> use ctrl.h in active_file*.F to control I/O precision.
903    o paramter list of CALL ADTHE_MAIN_LOOP
904    o added initial do_the_model_io to ecco
905    o set all ...Freq to zero after cost_final
906      taveFreq, dumpFreq, pChkptFreq
907    o MAIN and ECCO differentiability restored
908    
909    checkpoint52j_post
910    o fix nchklev in tamc.h for global_ocean...
911    o Bringing flow and store directives up-to-date
912    o Really weird thing!
913      call do_the_model_io from the_main_loop with parameters
914      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
915      TAF places a faulty re-call of initialise_varia
916      after cost_final call which should not be there!
917    checkpoint52j_pre
918    
919    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
920      error messages
921    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
922    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
923      debug output
924    o modfied mdsio_writefield.F to handle non-global files under exch2
925    o update AIM Cubed-Sphere exp (aim.5l_cs):
926      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
927    o update AIM Equatorial Channel exp:
928      use standard aim_v23 pkg and change the SST fields to be more realistic.
929    o globalFile now works with exch2
930    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
931      mon_vort3.F to make exch2 friendly with >1 tile per cube face
932    o limit timeave output for hi-res integrations
933    
934    checkpoint52i_post
935    o removed CPP_EEOPTIONS.h from verification/*/code
936    o updated the tiling for global_ocean_pressure
937    checkpoint52i_pre
938    
939    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
940      the old pkg/aim).
941    
942    checkpoint52h_pre
943    o shortened offending lines in exch2_send_rx?.template
944    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
945    o genmake2: add build & execute test for NetCDF code
946    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
947      old grid files, moved CPP_EEMACROS.h to pkg/exch2
948    o added useSingleCPUIO flag to monitor.F and mon_out.F
949    o added temporary hack for sea-ice dynamics on the cube:
950      metric terms are ignored and it is assumed that
951      there is no sea-ice on cube faces 1, 2, 4, and 5.
952    
953    checkpoint52f_post
954    o added exch2 cube routines to pkg/exch2
955    o modified hs94.cs-32x32x5 to use it
956    o added new grid files to hs94.cs-32x32x5
957    checkpoint52f_pre
958    
959    checkpoint52e_post
960    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
961      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
962    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
963      to work with implicit vertical advection and AB ;
964    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
965    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
966     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
967    checkpoint52e_pre
968    
969    o fix bug in impldiff when Nr=1 or Nr=2.
970    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
971    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
972    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
973      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
974    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
975    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
976    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
977    
978    checkpoint52d_post
979    o re-tiled many expts to allow comparison in multi-processor mode
980      - updated output accordingly
981      - changed hs94.128x64x5 to use intial T from file rather than use the
982        random number generator
983    o add infrastructure in model routines for fizhi and gridalt packages
984    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
985    o changes to permit hi-res, cubed-sphere, configuration
986      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
987      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
988      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
989        of surface winds for the cube
990      (A verification experiment, based on global_ocean.cs32x15, but with
991       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
992       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
993       complete with example surface forcing files and matlab scripts to look
994       at the output and compare it with that of global_ocean.cs32x15.)
995    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
996       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
997       to conform to the common rule.
998    o check-in the first version of the coupler + interfaces for multi-components
999       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1000       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1001       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1002       - ocean and atmos. share the same horizontal grid (no interpolation).
1003       - exchanges between component and coupler is done in forward_step
1004    o new verification experiment, cpl_aim+ocn:
1005       coupled ocean - AIM atmosphere on cs32 grid.
1006    
1007    checkpoint52d_pre
1008    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1009    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1010    
1011    checkpoint52c_post
1012    o Fixing OPTIONS files for use of exf:
1013      - ALLOW_ECCO not needed
1014      - ECCO_CPPOPTIONS.h should not be included from
1015        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1016        as has been the case in the past
1017      - All cal/exf related options are currently set in
1018        single header file. Should remain so until we
1019        agree on a consistent new policy.
1020    o Removed all CPP options for cal package.
1021      cal has no more CPP options.
1022    o modified STOREs in GAD_ADVECTION
1023    o corrected key comp. for passkey
1024    
1025    checkpoint52b_post
1026    o new version: "thsice" of thermodynamic sea-ice pkg:
1027     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1028     - modify fluxes but do not change theta directly;
1029     - light cleaning of bulk_force pkg (still needed with thsice).
1030     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1031       + output_thsice.txt to test thsice & bulk_force pkgs.
1032    o put back grid & coriolis monitor output.
1033    checkpoint52b_pre
1034    
1035    o call "do_the_model_io" at the beginning (=> dump initial state)
1036    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1037    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1038      (need info on NUMBER_OF_PTRACERS)
1039    o missing PTRACERS headers in some routines
1040    o default tamc.h in pkg/autodiff supposed to crash
1041      to ensure proper customization
1042    
1043    checkpoint52a_post
1044    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1045      - moved surfaceTendencyTice from pkg/seaice to main code
1046      - subroutine FREEZE_SURFACE now limits only surface temperature
1047        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1048        => new output.txt for global_ocean.cs32x15 & global_with_exf
1049      - keep the old version of FREEZE for backward compatibility;
1050        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1051      - corresponding modifs for TAF directives
1052    o added surface flux output variables to TIMEAVE_STATVARS
1053    o time-averaged output for pkg/ptracers
1054    o fix problem with ECCO-related divided adjoint
1055      snapshot file was missing some ad-variables,
1056      but no warning issued by TAF
1057    
1058    checkpoint52a_pre
1059    o some bug fixes for #undef REAL4_IS_SLOW
1060    
1061    checkpoint52 = ecco_c52_e35
1062    o after testing adjoints of checkpoint51u_post
1063    
1064    checkpoint51u_post
1065    o this is the post-merge tag of the ecco-branch
1066      (needs another clean checkout and re-testing)
1067    o various natl_box_adjoint configs and results
1068      but no input fields
1069    o obcs adjoint not yet merged!
1070    o adding ECCO global 1x1 and 2x2 degree configs
1071    o updated/extended some store directives for seaice
1072    o pkg/ecco now containes ecco-specific part of cost function
1073    o top level routines the_main_loop, forward_step
1074      supersede those in model/src/
1075      previous input data.cost now in data.ecco
1076      (new namelist ecco_cost_nml)
1077    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1078    
1079    checkpoint51t_post
1080    o this is the pre-merge tag of the ecco-branch
1081    
1082    checkpoint51s_post
1083    o cleanup: removed various obsolete #define-s
1084    o pkg/grdchk
1085      - renamed 'ph-grd 3' to 'grad-res'
1086      - merged from ecco-branch
1087        (remaining bug fixes for obcs gradient checks)
1088      - additional high-precision output for testreport
1089        (grep for 'precision_grdchk_result')
1090    
1091    checkpoint51r_post
1092    o cleaned up or removed CPP_OPTIONS.h files
1093    o updated results for some of the tests to reflect the new
1094      optfiles (-ieee: -O0 instead of -O3)
1095    
1096    checkpoint51q_post
1097    o cd_code:
1098      - moved cd_scheme.F -> cd_code_scheme.F
1099      - separate read_checkpoint from cd_code_ini_vars.F
1100      - separated cd_code part from write_checkpoint
1101      - updated AD_SOURCE, generated .flow
1102      - added CD_CODE_VARS.h to the_main_loop
1103      - Moving cd_code specific store dir.s to pkg/cd_code
1104    o ctrl package totally restructured
1105      - pack/unpack now optional and decoupled from
1106        xx_/adxx_ I/O
1107      - ctrl_pack/unpack cleaned
1108        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1109      - confined inclusion of AD_CONFIG.h to where necessary.
1110    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1111    
1112    checkpoint51p_post
1113    o create initial cd_code package
1114      - WARNING: the initialization of fields within packages
1115        is broken because INI_FIELDS (where READ_CHECKPOINT is
1116        called) is called *before* PACKAGES_INIT_VARIABLES.
1117        This seems to be backwards since
1118        1) its important to initially zero the entire field including
1119           the "halo" region
1120        2) zeroing needs to be done *before* reading pickup info
1121           and the pickup call might or might not happen in any
1122           particular run
1123      - this needs an overhaul for R2
1124    o cleanup verification/*/code/GMREDI_OPTIONS.h
1125    o cleanup testreport
1126    
1127    checkpoint51o_post
1128    o bringing AD-related verif's up to date with genmake2
1129      - carbon/
1130      - global_ocean.90x40x15/
1131      - hs.94.1x64x5/
1132      - (front_relax/ )
1133    o (more) consistent directory structure for AD-related verif.'s
1134    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1135    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1136    o bug fix in find_alpha.F for MDJWF:
1137      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1138        change rho -> rho-rhoConst
1139      - replace call find_rho to find_rhonum
1140    o initialisation of rFlx extended to full array (required by TAF)
1141      and shifted to thermodynamics
1142    o removed PTRACERS.h in ptracers routine
1143    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1144    o Correcting initialisations for fVerU, fVerV.
1145    o helping TAF to recognize dependency on kUp for
1146      fVerU, fVerV
1147    o Replacing delZ by delR in pkg/ctrl/
1148    checkpoint51o_pre
1149    
1150    o undid all of cp51 pending some cleanups and discussion
1151    o added the [#include "AD_CONFIG.h"] statement to all files that need
1152       it for adjoint/tl #defines
1153     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1154     o removed tools/genmake since it no longer works
1155    
1156    checkpoint51n_post
1157    o modifications to make FREEZE flux visible to pkg/kpp
1158      - moved surfaceTendencyTice from pkg/seaice to main code
1159      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1160      - subroutine FREEZE now limits only surface temperature
1161        (this means new output.txt for global_ocean.90x40x15,
1162         global_ocean.cs32x15, and global_with_exf)
1163    o added surface flux output variables to TIMEAVE_STATVARS
1164    
1165    checkpoint51n_pre
1166    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1167    o added [#include "AD_CONFIG.h"] to all files that use the following
1168      defines:
1169      - ALLOW_ADJOINT_RUN
1170      - ALLOW_TANGENTLINEAR_RUN
1171      - ALLOW_ECCO_OPTIMIZATION
1172    
1173    checkpoint51m_post
1174    o incorporating changes to get TAMC/TAF working in genmake2
1175      - added new TAMC/TAF targets to the Makefile
1176      - various cleanups related to package handling
1177      - these changes should have no impact on the forward model
1178    
1179    checkpoint51l_post
1180    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1181     - faster algorithm for cal_addtime.F
1182     - higher precision arithmetic, where needed
1183     - pkg/exf *startdate variables changed from calendar date to
1184       model integration time
1185    
1186    checkpoint51l_pre
1187    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1188    o enable to apply restoring on S & T only in a latitude band.
1189    o update output (external_forcing_surf modif. change truncation errors)
1190       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1191    
1192    checkpoint51k_post
1193    o change default to: useNHMTerms=.FALSE.
1194     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1195       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1196     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1197        exp1, ideal_2D_oce
1198     - change data file of oceanic exp (leave the results unchanged for now)
1199       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1200    o set gravitySign automatically according to the vertical coordinate used
1201      (and change sign: back to "logical" value: +1 when R increases downward)
1202    o added an include barrier to the default CPP_OPTIONS.h and
1203      removed the #include "PACKAGES_CONFIG.h" from it
1204    o fix a bug in mom_fluxform (from chk51j_post)
1205    
1206    checkpoint51j_post
1207    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1208    o adjusted some flow directives (dynamics, thermodynamics)
1209    o added cubed-sphere case to test cost function
1210    o heckpoint_lev?_directives.h now include
1211      pkg-specific directives, whenever those are enabled.
1212    o Moving pkg-specific flow directives to corresponding pkg
1213      Moving pkg-specific differentiation list to corresponding pkg
1214      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1215      ---> conventions are
1216           - pkg_ad.flow
1217           - pkg_ad_diff.list
1218           - pkg_ad_check_lev?_dir.h
1219    
1220    checkpoint51i_post
1221    o merge of the branch-genmake2
1222      - knowingly breaks the older genmake
1223      - automatic generation of all ALLOW_${PKG_NAME} defines
1224      - new testreport supersedes older testscript
1225    o large number of package inclusion and header cleanups
1226    checkpoint51i_pre
1227    
1228    o new output for adjoin of global ocean vector invariant
1229    o fix for checkpoint of thermodynamic seaice and bulk_force
1230    o Steph gchem various cleanups
1231    
1232    checkpoint 51h_pre
1233    o fixed some single quotes
1234    o modify gchem pkg to be more versatile
1235    o modifications to clean up dic pkg
1236    o add pkg/cfc
1237    
1238    checkpoint51g_post
1239    o provide links for ARPACK and ADM*TLM
1240    o start removing verification/vero/
1241    o update AD-related stuff
1242      (in particular some IF-statements in model/src/ routines)
1243    o adding to verification/global_ocean.90x40x15/ adjoint of
1244      vector invariant setup
1245    
1246    checkpoint51f_post
1247    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1248    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1249      of tracer Green's fucntions for ocean inversion project.
1250    
1251    checkpoint51f_pre
1252    o Added on-the-fly spatial interpolation capability
1253        "USE_EXF_INTERPOLATION" to pkg/exf.
1254      - This is a temporary Cartesian-grid hack until
1255        the super-duper ESMF coupler becomes available.
1256      - See verification/global_with_exf/README for usage example.
1257      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1258        flags and modified pkg/seaice accordingly.
1259    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1260        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1261        non-local transport term.
1262    
1263    checkpoint51e_post
1264    o pkg/mom_vecinv:
1265      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1266      - add time-ave diagnostic of vorticity advection.
1267    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1268    o atmospheric geopotential: - include water vapor effect;
1269                                - use p^kappa in p* scaling.
1270    o land pkg: read initial state from files.
1271    o AIM : add stratospheric drag in the upper level
1272    
1273    checkpoint51d_post
1274    o change function ILNBLNK (=> last non-blank char.) to return zero
1275      (instead of the string length) when the string. char is empty
1276    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1277    o modif's to restore TAMC compatibility
1278      - avoid "_d" constructs in PARAMETER declarations
1279      - avoid interrupting lines by comment lines
1280    o Use cluster local disks for purely local I/O
1281      vs. globally visible disks needed for ctrl stuff
1282      (merged from ecco-branch)
1283      - new active_file_loc... and mdsio_..._loc routines
1284      - affected packages: autodiff, ctrl, grdchk, mdsio
1285    
1286    checkpoint51c_post
1287    o introducing integer flag debugLevel
1288      - debLevZero: suppress all output
1289      - debLevA: standard
1290      - debLevB: equivalent to current debugMode=.TRUE.
1291    o introducing pathname variable mdsioLocalDir for mdsio
1292      that can be specified at runtime
1293      (relevant for cluster I/O to local disk)
1294    `
1295    >>>checkpoint51b_post
1296    adjoint of ptracers
1297    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1298    o extended state in checkpoint_lev?, etc.
1299    o alternative ctrl/cost with tr1 or ptracer
1300    o new comlev1_bibj_ptracers
1301    o new ptracers.flow
1302    o made ptracers_forcing same as external_forcing_s
1303    o added verification for adjoint with ptracers
1304      - adm. grdchk fail so far
1305      - tlm. grdchk OK
1306      - checked tapelev/comlev recomputations: OK
1307    <<<checkpoint51b_pre
1308    
1309    checkpoint51a_post
1310    o added code for biogeochemistry package
1311      - new pkgs: dic, gchem
1312      - new subroutine in ptracers
1313    o modify code for biogeo packages
1314      - in model/src and pkg/ptracers
1315    
1316    checkpoint51
1317    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1318      - autodiff, ctrl, exf, grdchk, seaice
1319      kept separate packages
1320      - cost, ecco, obcs
1321    o updating verification/internal_wave, verification/lab_sea
1322      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1323    
1324    checkpoint50i_post
1325    o Preparing next differentiable checkpoint and sync
1326      of MAIN vs. ecco-branch
1327      - 1st step: this one is differentiable
1328      - 2nd step: next(! not this) checkpoint will have updated packages
1329                  from ecco-branch)
1330    
1331    checkpoint50h_post
1332    o new package "land": provide surface BC for AIM.
1333    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1334    o AIM: use true log-P extrapolation for near surface temp (= as in
1335        F.Molteni paper) ; update aim.5l_cs output.
1336    o New variable in PARM03 for more flexible pickups
1337    o somewhat cleaned package initialisation sequence for
1338      ctrl/ cost/ ecco/ in packages_... routines
1339    
1340    checkpoint50g_post
1341    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1342      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1343      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1344        made the default because of faster convergence than ADI
1345    
1346    checkpoint50f_post
1347    o exf totally restructured
1348      - replaced all exf_set_ routines by one generic exf_set_gen.F
1349        and made sure it's still differentiable
1350      - split exf_getffields.F into new exf_bulkformulae.F
1351      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1352      - updated adjoint/makefile and relevant verif. accordingly
1353    
1354    checkpoint50f_pre
1355     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1356          + change Evap over land. (update aim.5l_cs output)
1357     o added missing .cvsignores and made uniform across expts
1358     o changed configuration of tidal_basin_2d expt
1359     o added pkg/debug functions for tracing code in fatal crashes
1360     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1361     o new fn in pkg/monitor to stop model if solution grows too big
1362     o removed lots of single quotes from comments
1363    
1364    checkpoint50e_post
1365    o make KPP work with PTRACERS
1366     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1367       nearly a copy of kpp_transport_s
1368     - there is no analogue to SurfaceTendencyS, so I have to use
1369       gPtr(of the surface layer) instead
1370    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1371    checkpoint50e_pre
1372    
1373    checkpoint50d_post
1374    o change kpp output from multiple-record state files to single-record state
1375      files analogous to write_state.F
1376    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1377      analogous to the cg2d-related output.
1378    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1379      so that writing to internal file fn (with length 512) fails.
1380    checkpoint50d_pre
1381    
1382    checkpoint50c_post
1383    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1384    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1385    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1386    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1387    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1388    
1389    checkpoint50c_pre
1390    Merging from release1_p13:
1391    o bug fix for pkg/seaice dynamic solver
1392    o Added SEAICE_initialHEFF to pkg/seaice
1393    
1394    checkpoint50b_post
1395    o store u*,v* in gU,V instead of in guNm1,gvNm1
1396    o in order to put the momForcing out of the Adams-Bashforth:
1397      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1398      to timestep.F
1399    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1400    o re-generate output for highly sensitive test-exp:
1401       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1402    
1403    checkpoint50b_pre
1404    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1405    o corrected CPP option mismatch in exf_Bulk... functions for case
1406      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1407    
1408    checkpoint50a_post
1409    o Bug fix for merging between c50 and KPP.
1410      ikey was passed from thermodynamics to kpp_calc via
1411      common block rather than being recomputed in kpp_calc,
1412      in contradiction with new key itdkey.
1413      New key ikppkey created, and tamc.h headers updated.
1414    
1415    checkpoint50
1416    - 2nd step of merge with ecco-branch:
1417      merge changes in ecco-branch back into main trunk
1418    - bug fix in find_alpha
1419    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1420    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1421    - merged some sliced AD support routines
1422    
1423    checkpoint49
1424    merged from ecco-branch:
1425    o exf:
1426      - Enable initialisation of forcing fields to constant
1427        (runtime) values.
1428      - in exf_getffields.F
1429        Reduce i-/j-loop to interior domain, discarding overlaps.
1430        That also fixes wrong TAF-key computations for key_1, key_2
1431        with bulf formulae.
1432      - exf_init.F modify #ifdef for exf_init_evap
1433      - exf_getffieldrec.F, ctrl_getrec.F
1434        The following INT-usages are not safe:
1435          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1436          fldcount = int(fldsecs/fldperiod) + 1
1437        and were modified.
1438    o autodiff: checkpoint_lev...
1439      - updated storing for bulk formulae (some arrays were missing)
1440      - added state for seaice package
1441      - synchronized with main branch
1442    o DIVA:
1443      Modif.s in
1444      - the_main_loop.F
1445      - the_model_main.F
1446      and added cost_final_restore.F cost_final_store.F
1447      o With these changes, it is possible to fully separate
1448        the first forward run to compute the cost function (mdthe_main_loop)
1449        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1450        into separate model executions.
1451        This enables better tuning of DIVA to given queue sizes.
1452      o Loss of cost function value in consecutive DIVA runs is
1453        fixed by storing to 'costfinal' file.
1454      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1455        beginning/end of adjoint integration is accounted for.
1456      The current changes apply to TAF-1.4.26.
1457      TAF has one remaining bug, requiring one manual change
1458      (see MITgcm manual).
1459    o cal: synchronized between MAIN and ecco-branch
1460    
1461    checkpoint48i_post
1462    o Changes to restore differentiability of code w.r.t. previous tag
1463      (mostly adding new routines to make list and replacing
1464      pressure by totPhiHyd).
1465    o Updated and merged grdchk package
1466      - has both ADM and TLM checks
1467      - works for single- and multi-proc.
1468      - output cleaned
1469      - worked successfully for parallel DIVA
1470    o genmake:
1471      - Adding -platform=SP4
1472      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1473    o Modif. for DIVA:
1474      ctrl_unpack should not be called in intermediate DIVA interval.
1475      (similar thing would apply for active files such as
1476      tbar, sbar, psbar, which should not be reinitialised;
1477      only relevant for ecco-branch)
1478    
1479    checkpoint48h_post
1480    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1481    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1482    o Added SEAICE_initialHEFF to pkg/seaice
1483    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1484    
1485    checkpoint48g_post
1486    --- EOS:
1487    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1488      store total Potential in totPhyHyd for diagnostics & EOS.
1489    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1490    --- Pressure/geopotential gradient:
1491    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1492    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1493      ( changes results of global_ocean_pressure )
1494    o NLFS + z-coord.: add eta*Rho' contribution.
1495    o accurate phiHyd when using interface-W at the middle between 2 centers
1496     ( changes results of ideal_2D_oce )
1497    o includes r* 2nd term in potential gradient.
1498    
1499    checkpoint48f_post
1500    Merging from release1_p12:
1501    o Modifications for using pkg/exf with pkg/seaice
1502      - improved description of the various forcing configurations
1503      - added basic radiation bulk formulae to pkg/exf
1504      - units/sign fix for evap computation in exf_getffields.F
1505      - updated verification/global_with_exf/results/output.txt
1506    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1507      (SBO) core products, including oceanic mass, center-of-mass,
1508      angular, and bottom pressure (see pkg/sbo/README.sbo).
1509    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1510      to avoid negative values in shallow regions.
1511      - updated verification/natl_box/results/output.txt
1512      - updated verification/lab_sea/results/output.txt
1513    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1514    o Added useSingleCpuIO option (see PARAMS.h).
1515    o Updated useSingleCpuIO option in mdsio_writefield.F to
1516      work with multi-field files, e.g., for single-file pickup.
1517    o pkg/seaice:
1518      - bug fix in growth.F: QNET for no shortwave case
1519      - added HeffFile for specifying initial sea-ice thickness
1520      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1521    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1522      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1523    o pkg/seaice:
1524      - adjoint-friendly modifications
1525      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1526    
1527    checkpoint48e_post
1528    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1529    o dynamics: change definition of computational domain & adapt mom_fluxform
1530      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1531    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1532        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1533        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1534        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1535        inverted_barometer solid-body.cs-32x32x1
1536      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1537    
1538    checkpoint48d_post
1539    o in preparation for r*:
1540     a) use pre-computed gradient of hydrostatic potential:
1541        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1542     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1543        => affects results of glob_oce_pressure (different truncation error)  
1544      update output.txt of ideal_2D_oce & global_ocean_pressure
1545    
1546    checkpoint48d_pre
1547    o in preparation for r*:
1548      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1549      pass the 2 comp. of the grad. as arguments to momentum S/R.
1550      but for the moment, only used if it does not change the results.
1551    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1552    
1553    checkpoint48c_post
1554    Modifications in treatment of initial flux forcing controls
1555    to avoid extra storing of flux fields.
1556    
1557    checkpoint48c_pre
1558    o Added tidal_basin_2d experiment (currently 1D!)
1559    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1560    
1561    checkpoint48b_post
1562    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1563     (modification to pressure gradient not yet implemented)
1564    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1565      (for U & V) that are used for vertical advection of momentum.
1566    
1567    checkpoint48a_post
1568    o In preparation for r*, use temp. array to compute vertical transport
1569       in flux-form momentum pkg. => change results of few test-exp.
1570      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1571                        lab_sea, natl_box & plume_on_slope
1572    
1573    checkpoint48
1574    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1575    
1576    checkpoint47j_post
1577    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1578    o moved adexch from forward_step to addummy_in_stepping
1579    o added exch in ctrl_map_...
1580    o aveFreq.=0. at end of cost_final to avoid overwrite in
1581      reverse checkpointing loop
1582    o Yet more changes in gmredi:
1583      * adgmredi_calc_tensor
1584        avoiding all recomputation of gmredi_slope_limit
1585      * adgmredi_x/y/rtransport
1586        added flag for excessive storing to avoid recomp. of
1587        u/v/rtans, dTdx/y/z
1588        -> this is not really necessary and very memory-consuming
1589      * adgmredi_slope_psi:
1590        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1591      * gmredi_slope_limit
1592        re-activated full calculation of taperfct for case 'ac02'
1593    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1594    
1595    checkpoint47i_post
1596    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1597    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1598      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1599    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1600    o gmredi: fix few bugs.
1601    
1602    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1603    This will be a good checkpoint to plug into the ecco-branch.
1604    o few modif.'s to get latest version adjointed
1605      (mainly kick out code in ini_linear_phisurf)
1606    o modif's to run adjoint with exactConserv
1607    o case GM_BOLUS_ADVEC should be cleaned
1608      S/R gmredi_slope_psi should be cleaned
1609    o verification/carbon now has exactConserv=.TRUE.
1610    
1611    checkpoint47g_post
1612    o time-average AIM output: becomes independent from statvars time-average
1613      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1614    o After TAF bug fix:
1615      Tested adjoint of gmredi package.
1616      Tests were done with checkpoint47 rather than with latest
1617      checkpoint47f_post since the latter is broken for the adjoint
1618      verification/carbon/ contains both ADM and TLM gradient checks.
1619    Here they are, before they get changed/lost/stolen.
1620    Mostly modif.'s to fix numerical sensitivities.
1621    Gradient checks OK for
1622    - GM_taper_scheme:
1623      * clipping
1624      * ac02
1625      * linear
1626      * glw91
1627      * dm95
1628      * ldd97
1629    - GMREDI_OPTIONS:
1630      * GM_VISBECK_VARIABLE_K
1631      * GM_NON_UNITY_DIAGONAL
1632      * GM_EXTRA_DIAGONAL
1633      * GM_BOLUS_ADVEC
1634    in conjunction with data.gmredi parameters to be checked in
1635    in a few minutes under verification/carbon/code/
1636    
1637    checkpoint47f_post
1638    Merging from release1_p10:
1639    o modifications for using pkg/exf with pkg/seaice
1640      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1641        and SEAICE_EXTERNAL_FLUXES
1642      - pkg/exf CPP options EXF_READ_EVAP and
1643        EXF_NO_BULK_COMPUTATIONS
1644      - usage examples are Experiments 8 and 9 in
1645        verification/lab_sea/README
1646      - verification/lab_sea default experiment now uses
1647        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1648    
1649    checkpoint47e_post
1650    o created a tag prior to creating a branch
1651    
1652    checkpoint47d_post
1653    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1654      at the bottom boundary had an erroneous half slip boundary condition
1655    o added bottom drag and no slip boundary condition capabilities to
1656      oceanic pressure coordinates code
1657    o added new verification experiment global_ocean_pressure, this experiment is
1658      also described in the tutorial section of the manual
1659    checkpoint47d_pre
1660    
1661    checkpoint47c_post
1662    o Added a verification experiment for a global cubed-sphere ocean run
1663      -  verification/global_ocean.cubed32x32x30
1664      -  uses pkg/therm_seaice and pkg/bulk_forcing
1665    
1666    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1667    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1668      when using P-coordinate; only implemented for atmospheric config.
1669    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1670      NOTES: requires option NONLIN_FRSURF to be "#define".
1671    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1672    
1673    checkpoint47b_post
1674    Merging from release1_p9:
1675    o pkg/seaice
1676      - removed GOTO's and added taf directives
1677      - double precision constants to reduce the g77 (Linux)
1678        to F77 (SGI) differences reported in release1_p8
1679    o tools/genmake
1680      - added SGI options
1681    o verification/testscript
1682      - updated to that of checkpoint47a_post
1683    o verification/global_ocean.90x40x15/input/eedata
1684      - modified for SGI f77 compatibility
1685    o verification/lab_sea
1686      - added description of sea-ice model
1687      - added missing matlab routines
1688      - added test of thermodynamics parallelization
1689    
1690    checkpoint47a_post
1691    o new pkg: aim_v23
1692     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1693       for now, keep the same surface forcing as before.
1694     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1695     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1696     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1697    o add diagnostic of surface correction term in monitor output
1698    
1699    o bulk_force and therm_seaice
1700    - Two packages:  bulk_force (Bulk forcing)
1701      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1702    - Earlier integration from Stephaine Dutkiewicz
1703      and Patrick Heimbach.
1704    - Two ifdef statements for compile time,
1705       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1706    
1707    checkpoint47
1708    differentiable version of checkpoint46n_post
1709    o bug fix in quasihydrostaticterms
1710    o * "clean" adjoint code (in terms of extensive recomputations)
1711        can now be obtained for all GMREDI options (i.e. for
1712        - GM_VISBECK_VARIABLE_K
1713        - GM_NON_UNITY_DIAGONAL
1714        - GM_EXTRA_DIAGONAL
1715        - GM_BOLUS_ADVEC )
1716      * However, wrong gradient check problem remains unsolved.
1717      * New CPP options have been introduced for different
1718        tapering schemes
1719    o external_fields_load now part of differentiation list
1720    o pressure needs multiple storing;
1721      would be nice to have store_pressure at beginning or
1722      end of forward_step, e.g. by having phiHyd global (5-dim.)
1723      (NB: pressure is needed for certain cases in find_rho,
1724      which is also invoked through convective_adjustment).
1725    o recomputations in find_rho for cases
1726     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1727    o #define ATMOSPHERIC_LOADING should be differentiable
1728    o ini_forcing shifted to begining of initialise_varia
1729    o Incorporating QNVS line search routines into MITgcm
1730      (this is separate code, and therefore not under pkg)
1731      lsopt/, optim/
1732    o Updated verification/carbon/
1733      - #define GM_VISBECK_VARIABLE_K
1734      - GM_taper_scheme    = 'ldd97'    
1735    
1736    checkpoint46n_post
1737    Merging from release1_p8:
1738    o verification/natl_box:
1739      updating new external_fields_load routine
1740    o New package: pkg/seaice
1741      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1742      The sea-ice code is based on Hibler (1979-1980).
1743      Two sea-ice dynamic solvers, ADI and LSR, are included.
1744      In addition to computing prognostic sea-ice variables and diagnosing
1745      the forcing/external data fields that drive the ocean model,
1746      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1747      The implied surface heat flux is then stored in variable
1748      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1749      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1750      non-local transport term.  Because this call precedes model
1751      thermodynamics, temperature under sea-ice may not be "exactly" at
1752      the freezing point by the time theta is dumped or time-averaged.
1753      N.B.: fairly large differences in accuracy occur across
1754            different platforms/compilers; comparison between
1755            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1756            generated output gives:
1757       T           S           U           V
1758      C D M    c        m  s        m  s        m  s        m  s
1759      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1760      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1761      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1762    
1763      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1764    o GAD:
1765      - generated new common blocks to account for call of
1766        same gad routines with differing traceridentities
1767        (needed to modify tracerIdentity indices in GAD.h)
1768      - generated separate common blocks for case useCubedSphereExchange
1769        (Department of Futurology)
1770      - parameter lists to gmredi_?transport: added tracerIdentity
1771      - added new key indices to tamc.h
1772    o external_fields_load:
1773      - added this routine to TAF list
1774      - needed to make some common blocks global and additional storing
1775        along the same lines as exf package (checkpoint_lev?_directives.h)
1776    o exf:
1777      updated external forcing package
1778      - bug fixes carried over from ecco-branch
1779        (missing OBCS_OPTIONS.h in two routines)
1780      - enable easy to use "no forcing".
1781      - added exf I/O for atmospheric loading
1782      - added exf I/O for runoff data
1783      - transfered scaling between exf <-> MITgcm to exf namelist
1784    o Adding new verification experiment global_with_exf.
1785      This verification experiment is almost identical to the
1786      global_ocean.90x40x15 experiment, except that it uses
1787      the exf (and cal) package instead of the
1788      external_fields_load routine (cf README file).
1789    
1790    checkpoint46m_post
1791    o modified testscript to return -- when there are no lines of "%MON" output
1792    o added new flag "quasiHydrostatic" for QH mode
1793      and new routine quasihydrostaticterms()
1794    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1795      New routine: mom_u_coriolis_nh()
1796    o fixed sign of non-hydrostatic metric terms in u and v equations.
1797      Depend on correct sign of gravitySign.
1798    o added work.pc* to .cvsignore in aim directories using ifc
1799    o introduced flag for controllin non-hydrostatic metric terms
1800    o removed gravitySign from PARM04
1801    o switched to g77/ifc from pgf77 in aim experiments
1802    
1803    checkpoint46l_post
1804    o made convective adjustment work with pressure coordinates:
1805     - changed the direction of k-loop in convective_adjustment.F for the
1806       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1807     - adjusted the reference pressure k-index in convective_adjustment.F
1808     - adjusted the convection condition in convect.F (in analogy to
1809       calc_ivdc.F)
1810     - convective_adjustment no longer computes anything on the halos
1811     - removed the warnings about negative salinity from find_rho.F and
1812       find_alpha.F; instead the new routine look_for_neg_salinity, called
1813       at the beginning of find_rho, find_alpha, and find_beta, does a
1814       check of the entire slice, if CPP-option
1815       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1816    checkpoint46l_pre
1817    
1818    checkpoint46k_post
1819    o fixed the verification/global_ocean.90x40x15 experiment:
1820     - new bathymetry (the world according to A., JMC, and M.)
1821     - new initial fields and forcing fields (*.bin files)
1822     - new POLY3.COEFFS (for the next release one should switch to a full
1823       equation of state: JMD95P or MDJWF)
1824     - fixed several errors and redundancies in the data file
1825     - experiment uses looped cells
1826     - added matlab directory with diagnostic scripts for plotting of output
1827    
1828    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1829     - read AIM physics parameters from a file (data.aimphys)
1830     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1831    
1832    checkpoint46j_post
1833    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1834    o move wVel computation at the end of the time step, in S/R integr_continuity
1835    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1836    o update timeave pkg for wVel diagnostic.
1837    checkpoint46j_pre
1838    
1839    checkpoint46i_post
1840    o Clean up AIM package (and keep the results unchanged):
1841      include CPP_OPTION and use IMPLICT NONE in all routines ;
1842      declare all the variables _RL ; use _d 0 for all numerical constants.
1843      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1844    
1845    checkpoint46h_post
1846    o cleaned up the use of rhoNil and rhoConst.
1847      - rhoNil should only appear in the LINEAR equation of state, everywhere
1848        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1849        and the dynamical equations are all divided by rhoConst
1850    o introduced new parameter rhoConstFresh, a reference density of fresh
1851      water, to remove the fresh water flux's dependence on rhoNil. The default
1852      value is 999.8 kg/m^3
1853    o cleanup up external_forcing.F and external_forcing_surf.F
1854      - can now be used by both OCEANIC and OCEANICP
1855    checkpoint46h_pre
1856    
1857     Added code to convert surface volume flux (fresh water) into
1858     a mass flux when using P coordinates in the ocean (OCEANICP).
1859     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1860    
1861    checkpoint46g_post
1862    o Include a new diagnostic variable phiHydLow for the ocean model
1863      - in z-coordinates, it is the bottom pressure anomaly
1864      - in p-coordinates, it is the sea surface elevation
1865      - in both cases, these variable have global drift, reflecting the mass
1866        drift in z-coordinates and the volume drift in p-coordinates
1867      - included time averaging for phiHydLow, be aware of the drift!
1868    o depth-dependent computation of Bo_surf for pressure coordinates
1869      in the ocean (buoyancyRelation='OCEANICP')
1870      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1871        Theta, Salinity, and Pressure in the parameter list. This routine is
1872        presently contained in find_rho.F. This routine does not give the
1873        correct density for 'POLY3', which would be a z-dependent reference
1874        density.
1875    o cleaned up find_rho
1876      - removed obsolete 'eqn' from the parameter list.
1877    o added two new verification experiments: gop and goz
1878      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1879    checkpoint46g_pre
1880    
1881    checkpoint46f_post
1882    o Enable tangent linear (forward mode) gradient checks:
1883      - extended active file handling to g_... files
1884      - added TANGENT_SIMULATION to theSimulationMode
1885      - extended grdchk package accordingly
1886    o added tangent linear setup in verification/carbon/code_ftl
1887    o added adjoint setup in verification/front_relax/code_ad
1888    
1889    checkpoint46e_post
1890    o Added new equation of state -> MDJWF
1891      - EOS of McDougall et al., 2002, JAOT, submitted
1892      - caveat: the equation of state is only valid for a smaller (more
1893        realistic?) range of values than JMD95P/Z and UNESCO
1894      - added masks to the calculation of pressure in store_pressure
1895      - added more check values for density in check_eos (ini_eos.F), some of
1896        the old check values are out of the range of the MDJWF-eos, so don't
1897        expect perfect matches for those
1898    checkpoint46e_pre
1899    
1900    checkpoint46d_post
1901    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1902      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1903      case of pressure coordinates. eosType='JMD95Z' in
1904      combination with buoyancyRelation='OCEANICP' now causes an error.
1905    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1906      in find_alpha/beta.
1907    checkpoint46d_pre
1908    
1909    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1910      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1911    
1912    checkpoint46c_post
1913    o Changes necessary for ocean in p-coordinates
1914     -  Added new buoyancy relation = 'OCEANICP'
1915     -  Added new parameters = gravitySign (this used to be contained inside
1916        the factor dRdZ which I added when we first switched to R coordinates).
1917     X GM/Redi is not compatible (yet)
1918     X bottom drag and no-slip need to be debugged.
1919    checkpoint46c_pre
1920    
1921    checkpoint46b_post
1922    o Added new equation of state -> JMD95Z and JMD95P
1923      - EOS of Jackett and McDougall, 1995, JAOT
1924      - moved all EOS parameters into EOS.h
1925      - new routines ini_eos.F, store_pressure.F
1926    o Added UNESCO EOS, but not recommended because it requires
1927      in-situ temperature (see JMD95)
1928    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1929      unesco.f to be used with POLY3
1930    checkpoint46b_pre
1931    
1932    checkpoint46a_post
1933    o Added (atmospheric) pressure loading
1934      - new field in FFIELDS.h, etc...
1935      - new cpp flag ATMOSPHERIC_LOADING
1936    o Changed hFacC to _hFacC in calc_phi_hyd.F
1937    o Added SHORTWAVE_HEATING to some files for consistency
1938    checkpoint46a_pre
1939    
1940    checkpoint46
1941    further merges from release1_p5
1942    o new ctrl package
1943      - adopted from ECCO environment to enable optimization
1944      - added Eliassen Palm fluxes to controls
1945    o added Eliassen Palm flux controls to gradient check package
1946    o cost package
1947      - Compatible with new ctrl package
1948      - added Eliassen Palm cost hooks
1949      - modif's of existing cost functions
1950    o Adjoint-related bug fixes in kpp:
1951      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1952      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1953    o autodiff package
1954      - flow directives:
1955        + new for S/R do_the_model_io
1956        + enhanced for S/R checkpoint
1957        + new gmredi.flow
1958      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1959        disable adcommon.h/g_common.h by default.
1960      - fixed problem for adjoint of global_max
1961    o modified verification/carbon/
1962    o New setup for adjoint of global_ocean
1963    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1964    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1965    o incorporated hooks for sponge layer code (external_forcing.F)
1966    
1967    checkpoint45d_post
1968    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1969    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1970      (affects plume_on_slope "cg2d" output)
1971    o add new parameter deltaTfreesurf for free-surface time stepping
1972    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1973    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1974    o change phiMin in exp1 (to agree with documentation)
1975    o add new flags:
1976     - T,S forcing inside/outside Adams-Bashforth
1977     - turn off temp,salt advection and/or forcing
1978     - for each tracer, define internal flag for multiDimAdvection & A-B
1979    o monitor: change definition of KE to check conservation of Energy
1980    
1981    checkpoint45c_post
1982    o Removed f90 comments ("!")
1983    o Modified initialisations to enable exf package for MITgcm
1984      (without invoking ECCO_PACKAGE).
1985    o modifications to gradient check package (Martin Losch)
1986      - enable centered differences
1987      - modified format of standard output
1988    
1989    checkpoint45b_post
1990    o cleaned exchange calls in cg2d
1991    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1992    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1993      to configure barotropic setup (Martin Losch)
1994    o moved some initialisations within bi,bj loop in dynamics
1995      (TAF flow dependency)
1996    o in initialise_varia, moved call packages_init_variables
1997      before convective_adjustment_init
1998      (corresponding adjustment of TAF tape initialisation).
1999    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2000    
2001    checkpoint45a_post
2002    o compute Rho over the whole domain (extend iMin,jMin indices)
2003    o specific exchange for X-slice domain (case Ny=1)
2004    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2005    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2006    
2007    checkpoint44h_post = checkpoint45
2008    o Fix to restore differentiability:
2009      place at which packages_init_variables is called in
2010      initialise_varia is crucial for reverse control flow.
2011    o modifications in GMRedi to enable stable adjoint
2012      (corresponding modif's in thermodynamics, dynamics)
2013    o added missing hook for sponge layer code in external_forcing
2014    o modified test cost functions
2015    o storing in gad_advection (plus removal of write(0,*)!
2016    o missing headers TR1.h added in convective_adjustment routines
2017    o errorMessageUnit set non-equal zero in eeboot
2018      (conflict on some platforms, e.g. IBM SP3)
2019    o modified carbon verif.
2020    
2021    checkpoint44h_pre
2022    o vertical grid option: allow to put the Interface at the middle between
2023      2 cell-centers ; replace delZ in pkg/kpp by drF.
2024    o GM Advective form: Tracers are advected using the residual transport (=
2025      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2026    
2027    checkpoint44g_post
2028    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2029      results) ; ifdef missing in thermodynamics.F
2030    
2031    checkpoint44f_pre,checkpoint44f_post
2032    o added PTRACERS package
2033      This allows an arbitrary number of passive tracers to be integrated
2034      forward simultaneously with the dynamicaly model.
2035      + Implemented so far:
2036        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2037        - I/O and checkpointing
2038        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2039      + Not implemented so far:
2040        - KPP
2041        - OBCS
2042      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2043        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2044        line in data.pkg.
2045      + This package is disabled by default since it increases storage.
2046    
2047    
2048    o testscript: added -cleanup option
2049    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2050                 b) enable to filter 2D fields.
2051    
2052    checkpoint44e_pre,post
2053    o re-wrote convective adjustment to use pre-calculated weights
2054      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2055      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2056      Original calls to convect() still in place.
2057    
2058    chkpt44d_pre,post
2059    o added missing EXCLUDE_MONITOR flags
2060    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2061      (incompatible typ in MIN/MAX expressions caused problems
2062      on IBM SP3)
2063    o in genmake added variable MAKEDEPEND
2064      plus resetting for case SunOS
2065    o added timer_stats.c routine for IBM SP3
2066    o removed variables in dynamics
2067    !!! I forgot to create tag chkpt44d_pre !!!
2068    !!! But chkpt44d_pre = chkpt44c_post    !!!
2069    
2070    o real fresh water flux implemented with non-linear free-surface.
2071    
2072    chkpt44c_pre,post
2073    o few fix (mask in shap_s2, EmPmR in external_field_load,
2074      USE_NATURAL_BCS in solve_for_P);
2075    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2076    
2077    checkpoint44b_pre/_post
2078    o merge of relevant stuff from the ecco-branch:
2079      - genmake: removed $S64 overwrite for case SunOS
2080      - pkg/exf: update and corrections for field swapping and obcs
2081      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2082                  harmonized between ECCO and MITgcm
2083      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2084                      updated checkpointing_lev... lists for obcs
2085      - model/src: minor changes in forward_step, plot_field
2086                   added directive for divided adjoint in the_main_loop
2087      - pkg/mdsio: added mdsio_gl_slice
2088    
2089    o check parameters & config (chkpt44a_pre,post)
2090    o OBC and NonLin_FrSurf.
2091    
2092    checkpoint44
2093    o fix bug in mom_vi_del2uv
2094    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2095    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2096    o update AIM experiments (NCEP input files)
2097    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2098    o added some stuff for AD
2099    
2100    checkpoint43
2101    o added two new advection tests
2102    o added global 4x4 degree ocean test
2103    o added test of H&S94 with free surface on cube
2104    o some final mods for gradient check, adjoint,...
2105    
2106    checkpoint42
2107      Fixed AD-related problems:
2108    o Store directives up-to-date with re-arranged Adams-Bashforth
2109      (mainly thermodynamics.F)
2110    o New store directives for multi-dim. advection schemes
2111      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2112      * new common block and key passkey
2113      (mainly gad_advection.F)
2114    o Modified store directives for split of dynamics/thermodynamics
2115      for the case ALLOW_KPP
2116    o Cleaned argument list for timestep_tracer.F
2117    
2118    checkpoint41
2119    o re-formatted/added comments in prologues of key subroutines
2120      to work with protex
2121    
2122    checkpoint40
2123    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2124    o added FLT (floats) package from Arne along with demo. experiment
2125    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2126      implementation of forward-in-time forcing terms
2127    o more mods for non-linear free-surface including new variable
2128    o modified multi-dim method to work on cube
2129    o bug fix in KPP (from DM)
2130    
2131    checkpoint40pre9
2132    o added DST advection schemes
2133    o fix MPI bug on SGI's
2134    o modifications for non-linear free-surface
2135    o fixed conditionals for fixed flow/passive tracer only mode
2136    o added tension/strain form of stress tensor
2137    o changes to commenting of arguments for TAF/TAMC
2138    o added/updated many matlab scripts
2139    o added multi-dimensional advection method for tracers
2140      
2141    checkpoint40pre8
2142    o new package rw/
2143      Added method for dumping intermediate local arrays:
2144      mdsio_writetile - same as mdsio_writefield except works from inside
2145                        bi,bj loop
2146      mdsio_writelocal - same as mdsio_writetile except works for local
2147                         arrays
2148      write_local_r? - higher-level wrapper for mdsio_writelocal
2149      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2150      Example given at end of mom_vecinv.F that dumps some local arrays.
2151    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2152      control flux-form versus vector invariant code.
2153      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2154      or genmake -DISABLE ...
2155    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2156      (additional storing is now needed for case vecinv;
2157      currently nothing implemented to switch this storing off
2158      in case fluxform is used since no CPP flag available).
2159    
2160    checkpoint40pre7
2161    o bug fix in dynamics.F
2162      calc_viscosity called before k=1,Nr loop.
2163    o added some #ifdef's ALLOW_PASSIVE_TRACER
2164    o cleaned initialisations in ctrl_map_ini
2165      related to TAF
2166    
2167    checkpoint40pre6
2168    o split dynamics into thermodynamics & dynamics
2169    o corresponding split of calc_diffusivity into
2170      calc_diffusivity, calc_viscosity
2171      (kpp_calc_diff, kpp_calc_visc).
2172    o Added diffkr, kapgm to control variables
2173    o bug fix in gmredi_slope_limit for ldd97
2174    
2175    checkpoint40pre5
2176    o proper initialization of Adams-Bashforth time stepping
2177      + uses forward step for very first step of model (iter=0)
2178    o re-generated *all* output since almost all output is modified by this
2179      change (sorry but we've been putting this one off for about 2 years)
2180      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2181        *not* regenerated since they are already out of date and I don't
2182        want to create the impression that they are suddenly working.
2183    o removed KAP stuff for DEC's
2184    o modified/added many .cvsignore files in */code and */input
2185    o added new expt "solid-body.cs-32x32x1"
2186      + this uses an alternative form of ini_curvilinear_grid.F which
2187        is not necessarily any better than the current one...
2188    
2189    checkpoint40pre4
2190    o added re-initialisations of utrans,vtrans,rtrans in
2191      calc_common_factors which are crucial for TAF.
2192    o extended iMin,jMin range for calc_common_factors,
2193      calc_diffusivity
2194    o added option ALLOW_PASSIVE_TRACER
2195    o a few minor updates and fixes
2196    
2197    checkpoint40pre3
2198    o created calc_gtr1.F for gad package
2199    o split the_main_loop and re-introduced forward_step
2200    o some recomputations of nIter0 for TAMC
2201    
2202  checkpoint40pre2  checkpoint40pre2
2203  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
2204  o Added gradient check package  o Added gradient check package

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