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revision 1.70 by jmc, Sat Apr 6 01:36:25 2002 UTC revision 1.541 by edhill, Tue Sep 6 02:16:09 2005 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o make MNC variable initialization happen earlier
8    o add diagnostics for (almost) each term of the momentum Eq.
9    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
10    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
11    o remove MINIMAL_TAVE_OUTPUT option ;
12      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
13    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
14      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
15    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
16    o add time-dependent SST, SSS control
17    o cost terms in ecco/ modularized (new cost_generic.F)
18    o cost_averages routines are modularized (new cost_averagesgeneric.F)
19    o new infrastructure for seaice model vs. obs misfits in seaice/
20      * driver from the_main_loop.F is seaice_cost_driver.F
21      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
22      * gradient check in Exp. 6a of natl_box_adjoint/
23    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
24      (see README file)
25    
26    checkpoint57q_post
27    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
28    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
29      - bug was reported by Jean-Michel and Ian Fenty
30    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
31      update exp. cpl_aim+ocn output.
32    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
33      Needed for high-res. runs with large global files
34      to be able to limit tapelev size
35    o Changed some tests for adjoint:
36      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
37      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
38      * global_ocean.90x40x15/ back to default 3-level checkpointing
39    o Modifications to enable scripted COMMON to MODULE conversion
40      * verification/OpenAD/code/ has necessary scripts and description;
41      * converts, compiles and runs successfully;
42    
43    checkpoint57p_post
44    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
45    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
46      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
47    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
48    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
49      (was already the case for dissipation with mom_vecinv,
50       and also the case for grad.PhiHyd when staggered-timeStep)
51      This will allow to put dissipation out-off the AB time-stepping.
52     Unfortunately, affects truncation error. Update output of exp. that "fails"
53      (cg2d matching number) and leave the others for later: front_relax(10),
54      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
55      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
56    
57    checkpoint57o_post
58    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
59      (2) its ready to be documented during the 20050801 DocFest
60    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
61      for ideal_2D_oce and lab_sea on linux_ia32_g77
62    o set to #undef CTRL_SET_OLD_MAXCVARS_30
63      in global1x1_tot/code_seaice_adj to access indices 32, 33
64      (worth another tag)
65    
66    checkpoint57n_post
67    o adding precip control xx_precip 32
68    o adding swflux control xx_swflux 33
69    o Replacing 10 forcing penalty cost routines by 1 generic.
70    o Implementing partitioning in time-mean and variable adjustment
71      for atmos. state.
72    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
73    o in natl_box_adjoint:
74      * updated exp 1 to 10
75        (but does not have time-mean vs. variable split results yet)
76    o updated global1x1/*_seaice_adj/
77      to incorporate latest changes
78    o enable useSingleCpuIO for mdsio vector routines
79      (applies in particular to tapelev I/O)
80    o removed inefficient K-loop in all active_file*control*.F
81    
82    checkpoint57m_post
83    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
84      and advect_cs (use EXCH-2 and standard cs-32 grid files).
85    o pkg/exch2: filling of face-corner halo regions is optional
86      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
87    
88    checkpoint57l_post
89     tag before updating tutorials (pre-release-2)
90    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
91       for output and interpolation of input fields onto model grid)
92    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
93       Affects results of exp. rotating_tank ; update output.txt.
94    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
95          and taking the square quantity and/or using a fraction-weight field.
96    o fix aim_diagnostics_init.F mate numbers.
97    o add mnc output capability to diagnostics/diagstat and update
98      our cvsignore files for the ACSII output generated
99    
100    checkpoint57k_post
101    o lab_sea now uses diagnostics package and provides a suite of
102      new EXF diagnostics output.
103    
104    checkpoint57j_post
105    o exf
106      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
107        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
108        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
109      * extended diagnostics output
110        - now includes all EXF variables
111        - hs, hl moved to common block
112        - separate S/R for diagnostics, called after ctrl vector is added
113        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
114        - EXFqnet contains true Qnet (i.e. includes qsw)
115      * updated verif. lab_sea, global_with_exf
116      * Rearranging hflux (exf_mapfields -> exf_getforcing)
117        to ensure that diagnostics sees a true EXFqnet
118    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
119    o diagnostics pkg: change pointers so that 1 diagnostic can be used
120      several times with different frequencies.
121    o mnc-ify the thsice package as requested by Daniel Enderton
122      - the monitor--MNC output needs work
123      - many attributes need to be added (most are currently blank)
124    o mnc-ify theaim_v23 package as requested by Daniel Enderton
125      - many attributes need to be added (most are currently blank)
126    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
127    o add Sadourny like discretization to the 4th.O vorticity advection scheme
128    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
129      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
130         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
131    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
132     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
133    
134    checkpoint57i_post
135    o Diagnostics package was changed: diagnostic allocation is now deactivated
136      by setting an empty file name in the namelist (used to be by setting 0 frequency)
137    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
138      add 1rst Order upwind vertical Shear.
139    o add a quick fix for A/B checkpointing in OFFLINE mode
140    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
141      end-run around the C/Fortran linking horror in eesup/src/timers.F
142    o added pkg/runclock: allows user to terminate run based on wall clock
143    o added non-hydrostatic scaling parameter: nh_am2
144    o pkg/my82: futile attempt to make results compiler-independent by adding
145      some "_d 0", etc. no effect.
146    o for mnc output, fill the 'T' coordinate var with myTime and create a
147      separate 'iter' variable for iteration count
148    o pkg/diagnostics:
149      add new capability: output of Global/Regional & per-level statistics ;
150      tested against monitor output (including land & thSIce) on various exp.
151    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
152    
153    checkpoint57h_done
154      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
155      data.diagnostics, data.gchem, data.ptracers) is done.
156    
157    o pkg/diagnostics: prepare for Global/Regional statistics.
158      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
159    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
160      and rename it: DIFFERENT_MULTIPLE
161    
162    checkpoint57h_post
163    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
164    o pkg/diagnostics: change output frequency, now in seconds (instead
165      of Nb of iterations). This requires to change data.diagnostics.
166    checkpoint57h_pre
167    
168    o in mnc, let the user create the output dir if both mnc_outdir_date
169      and mnc_outdir_num are false
170    o add fflags() to pkg/diagnostics which allows one to specify, on a
171      per-file basis, the file precision [default behavior is unchanged]
172    o added diagnostics to pkg/kpp, including computation of mixed layer
173      depth based on a temperature/density criterion
174    o updated verification/natl_box to test the new pkg/kpp diagnostics
175    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
176    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
177    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
178      not mnc -- this mistake was found by JMC and is now corrected
179    
180    checkpoint57g_post
181    o add Adams-Bashforth 3rd Order time stepping:
182      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
183      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
184    checkpoint57g_pre
185    
186    o make lambda[Theta,Salt]ClimRelax spatially varying
187      (default remains spatially uniform constant based on tau)
188    o added new control variables
189      * init. uVel, vVel, etanN
190      * lambda[Theta,Salt]ClimRelax
191    o separate masks used for ctrl_pack/unpack 'from write_grid' output
192      (suggested by G. Forget)
193    
194    checkpoint57f_post
195    o add parameter "baseTime" = model base time = time at iteration zero
196      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
197      account for baseTime shift
198    o move Coriolis arrays from PARAMS.h to GRID.h
199    checkpoint57f_pre
200    
201    o mnc-ifying the seaice package
202    o introduced an alternative length scale calculation for use in the limiting
203      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
204    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
205    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
206      as well as grad(vort3).  Made it compatible with both approximate form
207      for the cubed sphere and full form of these gradients.  Added flag
208      useFullLeith to select between approximate and full form.  
209    o add "d0" in getcon.F to reduce differences between compilers/platforms
210      update output.txt of exp. fizhi-gridalt-hs
211    o change port_rand funtion to allow to set the seed.
212    o fix obscure MNC bug involving conversion between reals and integers
213      - it caused no problems with certain (eg. gcc, ifc) compilers but the
214        new version is now more standards-compliant
215    o adjoint-related modifications
216      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
217      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
218      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
219    
220    checkpoint57e_post
221    o Adding eddy stress controls a la Ferreira et al.
222    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
223    
224    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
225      update output.txt of exp. fizhi-gridalt-hs
226    o add more "Z" dimensions and associated coordinate vars to MNC
227    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
228    o parameter calendarDumps: when set, approximate months (30-31 days) and years
229      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
230      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
231      months and years.  Requires pkg/cal.
232    o diagnostics: add pickup functionality
233      - off by default for backwards compatibility
234      - current version only uses MDSIO -- MNC will be added
235    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
236    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
237    
238    checkpoint57d_post
239    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
240    o modify verification/ideal_2D_oce so that it tests the creation of mnc
241      output from the diagnostics package
242    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
243    o make genmake2 more portable by using ".$FS" instead of ".f" for more
244      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
245    o add coordinate variables to the MNC output from the diagnostics package
246    o change MNC-flags default value: true when useMNC=TRUE
247    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
248      the ability (off by default) to read the grid information using MNC
249    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
250    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
251    o do snap-shot diagnostics at the middle of the time-interval (instead of
252      at the end).
253    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
254      new test for AIM with thSIce + slab-ocean
255    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
256    o move state variable diagnostics to the beginning of the time step ;
257      (note: still needs some work specially for snap-shot diagnostics)
258      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
259    
260    checkpoint57c_post
261    o Change testing option (-ieee) to get closer agreement between g77 & ifort
262    o generate new output.txt files on faulks with g77 & the new -ieee option
263    checkpoint57c_pre
264    
265    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
266      update output.txt of exp. global_ocean.90x40x15
267    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
268      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
269    o add saltFlux(+File) forcing capability with periodicExternalForcing
270    o allow to use pkg diagnostics for GM-Redi & ThSIce output
271    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
272    o improvements for the MNC output from DIAGNOSTICS:
273      - correct handling of the unlimitied dimension
274      - all dims now have associated coordinate variables
275      - variables located at U, V, and Corner ("Z") points are now written
276        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
277        *all* data points are output
278    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
279    o added pkg/seaice/seaice_monitor.F
280    o mdsio_readfield.F can now read files visible only to master MPI process.
281    o pkg/seaice: some test code for ice-modified ocean stress
282    o exf_getffields interpolation defaults to bilinear for all scalar forcing
283      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
284      spurious negative numbers for precipitation and humidity.  Will cause
285      some small numerical differences for integrations using pkg/exf/exf_interp.F.
286    o pkg/ctrl/
287      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
288        May be enabled via doPackDiag
289      *  introduce z-scaling of
290         + gradient (doZscalePack) and
291         + control (doZscaleUnpack)
292    o pkg/mdsio/
293      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
294      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
295    
296    checkpoint57b_post
297    o simplify options in diagnostics_fill arguments (remove weird combinations)
298    o fix MNC coordinate variables so that they now contain per-face index
299      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
300      general, EXCH2 grids are only aligned to a "local" coordinate system
301    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
302    o Implement instantaneous output within pkg diagnostics:
303      setting a negative frequency in data.diagnostics produces
304     "snap-shot" output (as opposed to time-average if freq > 0)
305    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
306      NOTE: change ptracer diagnostics name: use 2 characters to work with
307            more than 9 tracers. Add also diagnostics of advect & diffus flux.
308    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
309      becomes the coordinate variable for the 'T' dimension
310    o add CF-style coordinate variables to MNC
311      - just a first cut:  numbers are meaningless on the cubesphere and
312        missing along the T axis but otherwise it works!
313    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
314    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
315    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
316      this is based directly on what the model compute, so that the content of
317      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
318    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
319    o clean up build options files for SunOS, in particular
320      - remove -traditional from xmakedepend
321      - change -xarch=v9 to -xarch=native for f77
322      - restore use of make (not gmake)
323      - add CC=gcc if using g77
324    o changes per discussion of AM, JMC, & EH3 today:
325      - move redundant "grid" variables out of "state" -- in preparation of
326        creating proper CF-style coordinate variables and in recognition
327        that any/all grid variables can be easily copied (eg. w/NCO) from
328        the grid files into any of the other NetCDF files
329      - *always* output grid variables with MDSIO (this will eventually be
330        changed)
331      - output MNC grid file if useMNC is true
332    o every instance of _END_MASTER() has been found and replaced with
333      _END_MASTER( myThid ) in order to satisfy certain picky Sun
334      preprocessors
335    o re-arrange diagnostics pkg initialisation:
336     - allow each package to extend the available diagnostics list
337     - add some checking and fix small problems (multi-threaded, ...)
338     - new S/R diagnostics_fill (replace fill_diagnostics):
339       look through the short list of active diag. (instead of the long list)
340       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
341    
342    checkpoint57a_post
343    o this set of changes restores TAMC compatibility
344      tested for global_ocean.90x40x15 adjoint on trough
345      (what a pain)
346    
347    checkpoint57a_pre
348    o some modifs in tools/build_options for sunos
349    o call ctrl_pack for ctrl at end for optimcycle=0
350    
351    checkpoint57
352    o add horizontal bi-harmonic viscosity for vertical velocity
353      - new parameter viscA4W (defaults to viscA4)
354      - affects only non-hydrostatic code
355      - to be done: no-slip lateral boundary conditions
356    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
357    o implement Implicit Vertical advection for pTracers
358    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
359      (implemented also for implicit vertical diffusion & advection)
360    o OBCS: extend application of tracer open boundary conditions
361      to a strip beyond the boundary of width Olx/Oly
362    o add call monitor to TAF set of required calls (flow directives)
363      and include in natl_box_adjoint
364    o untangle a few ifdefs related to cost, ctrl, autodiff
365      untangel a few ALLOW_ECCO_OPTIMIZATION
366    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
367      (theta2, salt2 in ecco_cost_weights)
368    
369    checkpoint56c_post
370    o OBCS as control variables
371      - update ctrl_ad_diff.list, obcs_ad_diff.list
372      - remove balance of obcs controls from default
373      - fix index bug nobcs in ctrl_init
374      - fix dummy fields filen in ctrl_pack
375      - add dummy weights for obcs
376    o lsopt: comment out fort.94 output
377    o optim:
378      - remove unnecessary header files
379      - adjusted namelists
380      - add xerbla.F to Makefile
381    o exf:
382      - multiple modifications of exf_check_range
383      - unit change in exf_init_runoff from [m/year] to [m/s]
384    o mdsio:
385      - i/o-vector change debugLevel from debLevA to debLevB
386    
387    checkpoint56b_post
388    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
389      is called from DO_THE_MODEL_IO
390      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
391      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
392      - clean up PTRACERS_WRITE_TIMEAVE a little
393    o add another verification experiment that tests both the cfc-pkg and
394      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
395      reactive tendencies treated inline with regular timestepping
396    o testreport previously did a lousy job of comparing small numbers, so
397      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
398      implemented in the little c-progam tmp_cmpnum.c which is embedded in
399      testreport.
400    o ptracers_monitor: bug fix for MPI
401    
402    checkpoint56a_post
403    o GCHEM: finish reorganizating the package
404      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
405        (introduces another 3D-array for each passive tracer, but only if
406        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
407        gchemTendency is not needed because the timestep is done separately)
408      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
409      - GCHEM is now---more or less cleanly---separate from PTRACERS
410      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
411        so clear to me how that should be done in a general way.
412    o CFC: improve formatting of output in CFC_ATMOS
413    o PTRACERS:
414      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
415        that ALL experiments with ptracers enable can be checked. This makes
416        GCHEM_MONITOR obsolete.
417      - include a runtime parameter PTRACERS_monitorFreq that defaults to
418        monitorFreq
419      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
420    o add PTRACERS (PTR0[1-5]) to testreport output
421    o exf_check_range:
422      * default changed to .TRUE.
423      * will check values for niter0 if debLevA, every timestep if debLevB
424      * STOP in exf_check_range if 'out of range'
425      * range chosen generous to allow for potential extema
426      TBD: a version with stricter range
427           permitted range would be runtime parameters
428    o GMredi:
429      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
430      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
431      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
432    o GCHEM:
433      - move call to GCHEM_FORCING_SEP, so that it is now called before
434        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
435      - introduced a useGCHEM runtime flag and applied it everywhere.
436      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
437        this flag is now only visible within GCHEM-pkg routines.
438      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
439        be replaced by a 3D array that is computed before thermodynamics; for
440        this, the tracer ID iTracer had to be included into the parameter list
441        of ptracers_forcing
442      - set up forward_step to call gchem_forcing, that will replace
443        gchem_forcing_int in ptracers_forcing
444      - cleaning up
445    o small cleaning of exch2: remove files that are also in eesupp/src
446    
447    checkpoint56
448    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
449    o mnc: cleanup "full" files--fixes out-of-memory problem
450    o ECCO-GODAE
451      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
452      * fully merged and updated from SIO code
453        windstress sign change affects
454        - exf_inscal_[u/v]stress
455        - sign of xx_tau[u/v] adjustments
456        - signs in cost_scat
457      * ctrl_get_gen: avoid update of tau[u/v] for first few days
458      * natl_box_adjoint updated and compressed
459      * 2-level checkpoint switch added
460        (tested in EXP. 1 of natl_box_adjoint)
461      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
462    o SVD
463      * first complete, non-hacked version for SVD calculations
464      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
465        performed via direct access files admtlm_vector.it????
466        (via ctrl_[un]pack)
467      * optimcycle is used for ARPACK iteration counter
468        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
469      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
470        and add linear transforms where necessary
471      * controls are initial/final SST, SSS (can be extended; need to check
472        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
473    o mdsio: filename info to both stderr, stdout
474    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
475      from sign change
476    
477    checkpoint55j_post
478    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
479      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
480    o add consistent build directories and .cvsignore files to verification
481    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
482    o make all subroutines 30 or less characters in length for certain older
483      compilers to work (a thorough search only turns up two routines in
484      pkg/ptracers)
485    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
486      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
487    
488    checkpoint55i_post
489    o change arrays for total vertical diffusivity (2.D if explicit,
490      3.D if implicit) ; each ptracer uses its own background value.
491    o added mnc/NetCDF output capability to ocn_compon_interf
492      - added bits to verification/cpl_aim+ocn so that it can run on
493        ITRDA and other clusters without the mpirun "-wd" option
494    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
495      configuration
496    o give MNC the ability to create additional files rather than
497      exceeding a specified file size limit "MNC_MAX_FILESIZE"
498      - the default is just less than 2GB which is a practical limit
499        on many systems
500    o Compute the non-local term using either KPP vertical diffusivity (=default)
501       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
502    
503    checkpoint55h_post
504    o add verification test "vermix"
505    o remove all the *_ioinc flags and replace with the single global
506      outputTypesInclusive flag
507    o allow to set a vertical profile of vertical diffusivity for T & S
508    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
509    o useMNC moved from data.mnc to data.pkg
510    
511    checkpoint55g_post
512    o Renaming carbon AD experiments to comply with testreport conventions
513    o Updating adjoint of Held-Suarez hs94.1x64x5
514    o Fixing directives for non-ECCO forward_step, after ECCO directives
515      have been fixed to avoid recomp. of do_oceanic_phys
516      Works well for global_ocean.90x40x15,
517      but recomp. issue remains for carbon
518    o Updating adjoint output for natl_box_adjoint after
519      pkg/ecco has been modified (see taga c55d_post)
520    
521    checkpoint55f_post
522    o rename to timeave_init_fixed
523    
524    checkpoint55e_post
525    o some delicate re-shuffle of store directives to avoid one
526      extra call of do_oceanic_physics
527      affects ecco_the_main_loop.F, do_oceanic_physics.F
528      checkpoint_lev1_directives.h
529    o NB: this may break global_ocean adjoint temporarily,
530      but it is clear how to fix it. Will do later, need this now.
531    
532    checkpoint55d_post
533    o ECCO specific cost function terms (up-to-date with 1x1 runs)
534    o ecco_cost_weights is modified to 1x1 runs
535    o modifs to allow observations to be read in as
536      single file or yearly files
537    o enable to read exf forcing fields as either
538      single file or yearly files (flag useExfYearlyFields)
539    checkpoint55d_pre
540    
541    o switch between 2-level and 3-level checkpointing
542    o add ability of MNC to write local and "partial" (eg. 2D slices where
543      the full 3D field is never actually stored) arrays to NetCDF files
544      with the correct (that is, the complete multi-dimensional) set of
545      array indicies
546      - used in mom_vecinv() to write the diagFreq output
547      - tested (demonstrated) in verification/aim.5l_cs
548    o further mnc-ification
549      - add verification/lab_sea to the list with mnc setups
550      - fix undefined mnc v-names in cd_code
551      - add kpp to mnc output (both snapshot and timeave)
552    o non-hydrostatic code
553      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
554        in calc_gw.F
555      - defaults to viscAh
556      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
557        friction or Leith) in non-hydrostatic mode, as long as there is
558        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
559    o pkg/cost
560      extend simple cost functions to treat time mean quantities
561      (T,U,V) via cost_accumulate_state from cost_tile
562    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
563        be 2 times larger than the minimum size the advection scheme requires.
564        now get a perfect conservation of salt in advect_cs test-exp (updated)
565    o GGL90 (Gaspar's TKE mixed layer)
566      - add horizontal diffusion of TKE, requires exchanges in
567        do_fields_blocking_exchanges, horizontal diffusivity is zero by
568        default. In OPA there is no horizontal diffusion of TKE but the
569        mixing coefficients are computed from a horizontal average of TKE of
570        6 points or so. I think that diffusion has a little more physical
571        justification.
572      - clean up ggl90_calc in the hope of reducing memory usage (this hope
573        was in vain)
574      - mask tke-variable in ggl90_init
575    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
576    o fix biharmonic diffusion on CS-grid.
577    o more obcs stuff
578      - added obcs_external_fields_load as an alternative to the EXF-pkg option
579        for reading boundary values. This routine is called from
580        obcs_prescribe_read
581      - updated obcs_check
582      - changed sponge layer relaxation parameter units for days to seconds
583      - turned off sponge layer by default
584      - changed argument list of OBCS_CALC to myTime+deltaTclock
585      - fixed about 35 bugs in obcs_external_fields_load
586    
587    checkpoint55c_post
588    o obcs stuff
589      - new runtime flags useOBCSprescribe, useOBCSbalance
590      - re-arranged obcs_calc
591      - moved exf_getobcs to obcs_prescibe_read
592        obcs_prescibe_read is called after ORLANSKI stuff
593        and independent of it (executable can contain all).
594      - updated obcs_check
595      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
596        These may be necessary only if tangential velocities are
597        prescribed at OB, not sure, needs testing.
598    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
599      which simplifies the calls and passes the ifc check-bounds test
600    
601    checkpoint55b_post
602    o add a 2D scalar, Z location, exchange_2 routine.
603    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
604      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
605      affects advect_cs results (for the wrong reason): update output.txt
606    o use a more standard discretization for biharmonic viscosity ;
607     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
608      affects results of dome set-up: update output.txt
609    o fix gad_advection.F (CubedSphere part), back to version 1.23
610    o fix bug in mom_vi_del2uv.F (CubedSphere part).
611    
612    checkpoint55a_post
613    o merged code to
614      * prescribe/read time-dependent open boundaries
615        (works in conjunction with exf, cal)
616      * sponge layer code for open boundaries
617      * each boundary N/S/E/W now has its own CPP option
618        (healthy for the adjoint)
619    
620    checkpoint55
621    o up-to-date adjoint of previous breaks
622      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
623      - global_ocean_ebm: adjoint still needs fix (TLM ok)
624      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
625      - carbon: * remove tr1-related adjoint verification
626                * add ptracer as control variable
627    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
628      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
629    
630    checkpoint54f_post
631    o in verification/carbin/ remove experiment related to
632      ALLOW_PASSIVE_TRACER (array tr1 etc)
633      code_ad/ input_ad/ results_ad
634    
635    o add two new packages
636      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
637        + subject to optimization (memory)
638      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
639        + subject to reordering (many GOTOs in the original code)
640        + so far opps is called for every (i,j) point, and then operates in
641          the vertical; one may want to reorder the scheme in order operate in
642          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
643          fields)
644    o overhaul of IO so that we now have flags for MDSIO and/or MNC
645      - all verification tests compile and run with linux_ia32_g77
646      - defaults are compatible with current input files--nothing
647        should change if you were not previously using MNC
648      - MNC output has been added in numerous places (eg. timeave)
649        but there are still a few writes not yet do-able with MNC
650        (this is in progress)
651      - flags now allow for either/or/both use of MDSIO and MNC and
652        documentation will soon follow
653      - numerous small formatting cleanups for ProTeX
654    o add version info (via BUILD_INFO.h) to MNC and stdout
655    
656    checkpoint54e_post
657    o add two new packages
658      - pp81 (Packanowski and Philander, 1981), Richardson number and
659        stratification dependent mixing
660      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
661      - these scheme operate in a similar manner as KPP (without ghat, of
662        course), however there is only one diffusivity that is used for both
663        temperature and salinity (and passive tracers)ç
664    o add offline package
665    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
666      provided by Stephanie Dutkiewicz
667    o genmake2: add ability to search for C compilers and cleanup test output
668      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
669    
670    checkpoint54d_post
671    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
672    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
673      leading to additional shift by 5 days each year of integration
674       (i.e. leading to considerable offset over the years)
675    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
676    o start with no AB and no initial filtering (staggerTimeStep):
677      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
678    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
679      (external loading & cpl import/export stay in forward_step.F)
680    o update coupling interface to work with new staggerTimeStep
681    o change MDSIO ptracers_pickup.
682    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
683    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
684    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
685    
686    checkpoint54c_post
687    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
688      this affects (truncation error) output.txt of test-exp:
689       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
690    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
691    o change Qnet to always be the net heat flux, (+upward).
692      affects (truncation error) output of natl_box exp.: updated
693    o define the max number of passive tracers in PTRACERS_SIZE.h
694    o start to test mnc routinely in exp0
695    o add sea-ice loading (sIceLoad) as a new forcing field.
696    
697    checkpoint54b_post
698    o add testreport "-j JOBS" option for parallel builds (tested and pretty
699       impressive on Altix and Opteron systems)
700    o diagnostics can now write NetCDF files through the mnc package
701    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
702    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
703    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
704      affects (truncation error) output of lab_sea & natl_box exp.: updated
705    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
706    
707    checkpoint54a_post
708    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
709    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
710    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
711    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
712      + internal_wave (shift in writing cg2d_ini_res)
713    checkpoint54a_pre
714    
715    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
716      - modified verification/lab_sea and natl_box_adjoint accordingly
717    
718    checkpoint54
719    checkpoint53g_post
720    o prepare splitting of thermodynamics: store convect.counter in common block
721    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
722      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
723    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
724    o new parameter "nShapS": allow to treat differently S from T (nShapT)
725    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
726    o restore adjointability
727    
728    checkpoint53f_post
729    o modifications that affect AIM experiment results (update output.txt):
730      - no advection of S at top interface Nr (pkg/generic_advdiff)
731      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
732    o AIM pkg:
733      - include stability function into surf.Flux derivative relative to Tsurf
734      - calculate clear-sky radiation & surface temp. change (for diagnostics)
735    
736    checkpoint53e_post
737    o merged cylindrical coord configuration
738    o added rotating_tank experiment
739    checkpoint53e_pre
740    
741    checkpoint53d_post
742    o faulks upgraded: re-generate output.txt that have changed:
743       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
744    o Added Bryan and Lewis, 1979, vertical diffusivity profile
745    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
746    o added Sadourny discretization of Coriolis
747      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
748      - re-enabled use of omega3 (useAbsVorticity)
749    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
750      vector-invariant equations
751      - note: does *NOT* yet use same variable visc. for no-slip BC's.
752    o recoded the lateral boundary conditions for non-hydrostatic w, this time
753      hopefully without new bugs
754      - still to do: biharmonic friction for non-hydrostatic w
755    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
756    o regenerated output for global_ocean_ebm (using -ieee)
757    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
758      of mom_common/
759      - simple re-arrangement of instructions within computing loop
760    checkpoint53d_pre
761    
762    checkpoint53c_post
763    o new version of coupler for AIM+thSIce and Ocean models
764     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
765     - land: change Evaporation of snow
766     - aim with thSIce: fix bug in snow-precip.
767    o changes to calc_gw.F
768     - bug fix for w^2 term near the bottom boundary
769     - (hopefully) improve the lateral slip boundary condtions for use with
770        partial/looped cells
771      - because the bug fix changes two verification experiments anyway (exp5
772        and plume on slope), change the lateral boundary condition from half slip
773        to the value of no_slip_sides
774    o ebm package wasnt quite up to the parallel task. Fixed that.
775    o Adjoint of EBM package + verification
776      * TLM OK
777      * ADM not sufficient accuracy yet (needs further testing)
778    
779    checkpoint53b_post
780    o Commiting new energy balance model to repository
781      * package is pkg/ebm
782      * verif. is verification/global_ocean_ebm
783      * references are in ebm_driver.F
784    C      * X. Wang, P. Stone and J. Marotzke, 1999:
785    C        Global thermohaline circulation. Part I:
786    C        Sensitivity to atmospheric moisture transport.
787    C        J. Climate 12(1), 71-82
788    C      * X. Wang, P. Stone and J. Marotzke, 1999:
789    C        Global thermohaline circulation. Part II:
790    C        Sensitivity with interactive transport.
791    C        J. Climate 12(1), 83-91
792    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
793    C        Destabilization of the thermohaline circulation
794    C        by atmospheric eddy transports.
795    C        J. Climate 7(12), 1870-1882
796    o Will need long integration testing.
797    checkpoint53b_pre
798    
799    o created pkg/mom_common in preparation for variable viscosity code
800    o renamed and split ini_mnc_io
801    o pkg/land: only liquid water can diffuse or run-off
802    o AIM using land: soil wetness availability account for snow
803    o added printMapIncludesZeros to EEPARMS namelist
804    
805    checkpoint53a_post
806    o restore TAMC compatiility for exf_constants.h
807      (no usage of _d in .h)
808    o Additional storing in KPP in an attempt to fix
809      TAMC problem with adjoint of KPP code.
810      (no success...)
811      Identical code works fine with TAF.
812    o Fixed verification/natl_box_adjoint experiments.
813      Initial conditions for Experiments 4 and 5 are now
814      set to "SEAICE_initialHEFF=0", which is more reasonable,
815      and hence gives results closer to that of Experiment 2.
816      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
817    
818    checkpoint53
819    o stable checkpoint with up to date adjoint
820      TLM tests only run for 1st grdchk at the moment. Its unclear if
821      this is a code problem or a problem with resetting code for g_
822      variables that is being autogenerated wrong.
823      Otherwise:
824       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
825       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
826         are both still in chaos following their security messes.
827    
828    checkpoint52n_post
829    o various build (mostly genmake2) changes including:
830      - ability to build/run more easily within Cygwin and MacOS X
831      - more complicated Makefiles with a stronger dependence on Gnu Make
832    o pkg/seaice modifications
833      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
834        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
835        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
836      - changed proxy for geostrophic velocity and updated
837        verification/lab_sea/results/* accordingly
838      - removed ADI dynamic solver from pkg/seaice
839      - replaced all occurrences of 1/CSTICE or 1/CSUICE
840        they caused a segmentation fault under certain circumstances
841      - removed unused field WATR
842    o bug fix in exf-package:
843      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
844         now reflect that.
845    o small fixes in the cal-package:
846      - set reference date to first of January for the 'model'-calendar
847      - failing of cal_CheckDate in cal_FullDate now actually results in a
848        warning
849    o small modifications in exf-package to increase flexibility:
850      - change climtempfreeze from a constant to a runtime parameter that
851        is specified in data.exf_clim (default = -1.9)
852      - introduce runtime parameter windstressmax (default = 2.0) that is
853        specified in data.exf
854    o fix in pkg/thsice:
855      - update Evap (Tsf changes) to be consistent with Latent heat flux
856      - maintain snow precipitation unchanged (even if Tsf >=0).
857     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
858    
859    checkpoint52m_post
860    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
861      this does not change any of the results, because myIter=0 in swfrac always
862      lead to jwtype=2 (the default anyway), but the call makes little sense
863      as a default
864    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
865    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
866      atmospheric model (AIM) to use it ; add a "slab ocean" component.
867    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
868    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
869    o extending useSingleCpuIO option to work with new exch2 I/O format
870      - old-style, missing-tile I/O is still accessible by defining CPP
871        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
872    o monitor package can write to NetCDF files and/or STDOUT
873    o fix re-definition bug in MNC_GRID_INIT_ALL()
874    o doc/api_reference added
875      - a framework for building an API Reference Manual using all
876        the "protex" comments embedded in the code
877      - see pkg/generic_advdiff, pkg/mnc for examples
878    o MNC:
879      - make myThid the last argument for all subroutines
880      - new default for the grid files: NO halos
881      - add useMNC and other run-time flags
882      - separate per-file-group handling of the unlimited dimension
883      - early initialization of MNC w/ flags read at the eeboot stage
884        and lookup tables set in initialize_fixed
885      - write all MNC output to a freshly-created directory
886    o thermodynamics sea-ice (thsice) is now tested with testreport.
887    o test exp. advect_cs: use the standard cs32 grid ; update output.
888    o Added functionality to grdchk:
889      pick global i,j,k position (or nearest wet) where to perform check.
890    
891    checkpoint52l_post
892    o new land formulation:
893      a) use ground enthalpy as prognostic variable to ensure exact
894         energy conservation.
895      b) account for water temperature and for latent heat of freezing
896         in all processes (rain, run-off, ground storage)
897      c) compute surface and ground temperature implicitly.
898    o aim_v23 modification for new land model:
899      a) Treat separately land / ocean / sea-ice surface fluxes
900         to allow implicit computation of land & sea-ice surface temp.
901      b) add snow precipitation.
902    checkpoint52l_pre
903    
904    o fix problem (when 1 tile is empty) in min/max monitor.
905    o fix bug in timeAve (u,vZetatave in common block)
906    o no restoring terms under ice for pkg/seaice
907    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
908    o bug fix for pkg/seaice pickups
909    o change MNC call locations and add coordinate attributes
910    o mask vorticity at the corner ; affects global_ocean.cs output
911    o fix ini_curvilinear_grid ; test CS experiments with mpi
912    o aim.5l_cs: modify sea-ice fraction input file ; update output
913    o exf: Adding simple range check routine for exf fields after read
914    
915    checkpoint52k_post
916    o removed top-level directory "diags"
917      - we migrated these functions to pkg/timeave a long time ago
918    o fixed bug introduced in pkg/monitor
919    o accuracy ctrlprec = 32 insuffient for gradient checks using
920      averaged fields (I/O via cost_averages)
921      -> use ctrl.h in active_file*.F to control I/O precision.
922    o paramter list of CALL ADTHE_MAIN_LOOP
923    o added initial do_the_model_io to ecco
924    o set all ...Freq to zero after cost_final
925      taveFreq, dumpFreq, pChkptFreq
926    o MAIN and ECCO differentiability restored
927    
928    checkpoint52j_post
929    o fix nchklev in tamc.h for global_ocean...
930    o Bringing flow and store directives up-to-date
931    o Really weird thing!
932      call do_the_model_io from the_main_loop with parameters
933      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
934      TAF places a faulty re-call of initialise_varia
935      after cost_final call which should not be there!
936    checkpoint52j_pre
937    
938    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
939      error messages
940    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
941    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
942      debug output
943    o modfied mdsio_writefield.F to handle non-global files under exch2
944    o update AIM Cubed-Sphere exp (aim.5l_cs):
945      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
946    o update AIM Equatorial Channel exp:
947      use standard aim_v23 pkg and change the SST fields to be more realistic.
948    o globalFile now works with exch2
949    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
950      mon_vort3.F to make exch2 friendly with >1 tile per cube face
951    o limit timeave output for hi-res integrations
952    
953    checkpoint52i_post
954    o removed CPP_EEOPTIONS.h from verification/*/code
955    o updated the tiling for global_ocean_pressure
956    checkpoint52i_pre
957    
958    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
959      the old pkg/aim).
960    
961    checkpoint52h_pre
962    o shortened offending lines in exch2_send_rx?.template
963    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
964    o genmake2: add build & execute test for NetCDF code
965    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
966      old grid files, moved CPP_EEMACROS.h to pkg/exch2
967    o added useSingleCPUIO flag to monitor.F and mon_out.F
968    o added temporary hack for sea-ice dynamics on the cube:
969      metric terms are ignored and it is assumed that
970      there is no sea-ice on cube faces 1, 2, 4, and 5.
971    
972    checkpoint52f_post
973    o added exch2 cube routines to pkg/exch2
974    o modified hs94.cs-32x32x5 to use it
975    o added new grid files to hs94.cs-32x32x5
976    checkpoint52f_pre
977    
978    checkpoint52e_post
979    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
980      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
981    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
982      to work with implicit vertical advection and AB ;
983    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
984    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
985     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
986    checkpoint52e_pre
987    
988    o fix bug in impldiff when Nr=1 or Nr=2.
989    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
990    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
991    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
992      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
993    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
994    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
995    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
996    
997    checkpoint52d_post
998    o re-tiled many expts to allow comparison in multi-processor mode
999      - updated output accordingly
1000      - changed hs94.128x64x5 to use intial T from file rather than use the
1001        random number generator
1002    o add infrastructure in model routines for fizhi and gridalt packages
1003    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1004    o changes to permit hi-res, cubed-sphere, configuration
1005      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1006      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1007      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1008        of surface winds for the cube
1009      (A verification experiment, based on global_ocean.cs32x15, but with
1010       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1011       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1012       complete with example surface forcing files and matlab scripts to look
1013       at the output and compare it with that of global_ocean.cs32x15.)
1014    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1015       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1016       to conform to the common rule.
1017    o check-in the first version of the coupler + interfaces for multi-components
1018       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1019       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1020       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1021       - ocean and atmos. share the same horizontal grid (no interpolation).
1022       - exchanges between component and coupler is done in forward_step
1023    o new verification experiment, cpl_aim+ocn:
1024       coupled ocean - AIM atmosphere on cs32 grid.
1025    
1026    checkpoint52d_pre
1027    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1028    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1029    
1030    checkpoint52c_post
1031    o Fixing OPTIONS files for use of exf:
1032      - ALLOW_ECCO not needed
1033      - ECCO_CPPOPTIONS.h should not be included from
1034        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1035        as has been the case in the past
1036      - All cal/exf related options are currently set in
1037        single header file. Should remain so until we
1038        agree on a consistent new policy.
1039    o Removed all CPP options for cal package.
1040      cal has no more CPP options.
1041    o modified STOREs in GAD_ADVECTION
1042    o corrected key comp. for passkey
1043    
1044    checkpoint52b_post
1045    o new version: "thsice" of thermodynamic sea-ice pkg:
1046     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1047     - modify fluxes but do not change theta directly;
1048     - light cleaning of bulk_force pkg (still needed with thsice).
1049     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1050       + output_thsice.txt to test thsice & bulk_force pkgs.
1051    o put back grid & coriolis monitor output.
1052    checkpoint52b_pre
1053    
1054    o call "do_the_model_io" at the beginning (=> dump initial state)
1055    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1056    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1057      (need info on NUMBER_OF_PTRACERS)
1058    o missing PTRACERS headers in some routines
1059    o default tamc.h in pkg/autodiff supposed to crash
1060      to ensure proper customization
1061    
1062    checkpoint52a_post
1063    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1064      - moved surfaceTendencyTice from pkg/seaice to main code
1065      - subroutine FREEZE_SURFACE now limits only surface temperature
1066        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1067        => new output.txt for global_ocean.cs32x15 & global_with_exf
1068      - keep the old version of FREEZE for backward compatibility;
1069        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1070      - corresponding modifs for TAF directives
1071    o added surface flux output variables to TIMEAVE_STATVARS
1072    o time-averaged output for pkg/ptracers
1073    o fix problem with ECCO-related divided adjoint
1074      snapshot file was missing some ad-variables,
1075      but no warning issued by TAF
1076    
1077    checkpoint52a_pre
1078    o some bug fixes for #undef REAL4_IS_SLOW
1079    
1080    checkpoint52 = ecco_c52_e35
1081    o after testing adjoints of checkpoint51u_post
1082    
1083    checkpoint51u_post
1084    o this is the post-merge tag of the ecco-branch
1085      (needs another clean checkout and re-testing)
1086    o various natl_box_adjoint configs and results
1087      but no input fields
1088    o obcs adjoint not yet merged!
1089    o adding ECCO global 1x1 and 2x2 degree configs
1090    o updated/extended some store directives for seaice
1091    o pkg/ecco now containes ecco-specific part of cost function
1092    o top level routines the_main_loop, forward_step
1093      supersede those in model/src/
1094      previous input data.cost now in data.ecco
1095      (new namelist ecco_cost_nml)
1096    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1097    
1098    checkpoint51t_post
1099    o this is the pre-merge tag of the ecco-branch
1100    
1101    checkpoint51s_post
1102    o cleanup: removed various obsolete #define-s
1103    o pkg/grdchk
1104      - renamed 'ph-grd 3' to 'grad-res'
1105      - merged from ecco-branch
1106        (remaining bug fixes for obcs gradient checks)
1107      - additional high-precision output for testreport
1108        (grep for 'precision_grdchk_result')
1109    
1110    checkpoint51r_post
1111    o cleaned up or removed CPP_OPTIONS.h files
1112    o updated results for some of the tests to reflect the new
1113      optfiles (-ieee: -O0 instead of -O3)
1114    
1115    checkpoint51q_post
1116    o cd_code:
1117      - moved cd_scheme.F -> cd_code_scheme.F
1118      - separate read_checkpoint from cd_code_ini_vars.F
1119      - separated cd_code part from write_checkpoint
1120      - updated AD_SOURCE, generated .flow
1121      - added CD_CODE_VARS.h to the_main_loop
1122      - Moving cd_code specific store dir.s to pkg/cd_code
1123    o ctrl package totally restructured
1124      - pack/unpack now optional and decoupled from
1125        xx_/adxx_ I/O
1126      - ctrl_pack/unpack cleaned
1127        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1128      - confined inclusion of AD_CONFIG.h to where necessary.
1129    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1130    
1131    checkpoint51p_post
1132    o create initial cd_code package
1133      - WARNING: the initialization of fields within packages
1134        is broken because INI_FIELDS (where READ_CHECKPOINT is
1135        called) is called *before* PACKAGES_INIT_VARIABLES.
1136        This seems to be backwards since
1137        1) its important to initially zero the entire field including
1138           the "halo" region
1139        2) zeroing needs to be done *before* reading pickup info
1140           and the pickup call might or might not happen in any
1141           particular run
1142      - this needs an overhaul for R2
1143    o cleanup verification/*/code/GMREDI_OPTIONS.h
1144    o cleanup testreport
1145    
1146    checkpoint51o_post
1147    o bringing AD-related verif's up to date with genmake2
1148      - carbon/
1149      - global_ocean.90x40x15/
1150      - hs.94.1x64x5/
1151      - (front_relax/ )
1152    o (more) consistent directory structure for AD-related verif.'s
1153    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1154    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1155    o bug fix in find_alpha.F for MDJWF:
1156      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1157        change rho -> rho-rhoConst
1158      - replace call find_rho to find_rhonum
1159    o initialisation of rFlx extended to full array (required by TAF)
1160      and shifted to thermodynamics
1161    o removed PTRACERS.h in ptracers routine
1162    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1163    o Correcting initialisations for fVerU, fVerV.
1164    o helping TAF to recognize dependency on kUp for
1165      fVerU, fVerV
1166    o Replacing delZ by delR in pkg/ctrl/
1167    checkpoint51o_pre
1168    
1169    o undid all of cp51 pending some cleanups and discussion
1170    o added the [#include "AD_CONFIG.h"] statement to all files that need
1171       it for adjoint/tl #defines
1172     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1173     o removed tools/genmake since it no longer works
1174    
1175    checkpoint51n_post
1176    o modifications to make FREEZE flux visible to pkg/kpp
1177      - moved surfaceTendencyTice from pkg/seaice to main code
1178      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1179      - subroutine FREEZE now limits only surface temperature
1180        (this means new output.txt for global_ocean.90x40x15,
1181         global_ocean.cs32x15, and global_with_exf)
1182    o added surface flux output variables to TIMEAVE_STATVARS
1183    
1184    checkpoint51n_pre
1185    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1186    o added [#include "AD_CONFIG.h"] to all files that use the following
1187      defines:
1188      - ALLOW_ADJOINT_RUN
1189      - ALLOW_TANGENTLINEAR_RUN
1190      - ALLOW_ECCO_OPTIMIZATION
1191    
1192    checkpoint51m_post
1193    o incorporating changes to get TAMC/TAF working in genmake2
1194      - added new TAMC/TAF targets to the Makefile
1195      - various cleanups related to package handling
1196      - these changes should have no impact on the forward model
1197    
1198    checkpoint51l_post
1199    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1200     - faster algorithm for cal_addtime.F
1201     - higher precision arithmetic, where needed
1202     - pkg/exf *startdate variables changed from calendar date to
1203       model integration time
1204    
1205    checkpoint51l_pre
1206    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1207    o enable to apply restoring on S & T only in a latitude band.
1208    o update output (external_forcing_surf modif. change truncation errors)
1209       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1210    
1211    checkpoint51k_post
1212    o change default to: useNHMTerms=.FALSE.
1213     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1214       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1215     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1216        exp1, ideal_2D_oce
1217     - change data file of oceanic exp (leave the results unchanged for now)
1218       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1219    o set gravitySign automatically according to the vertical coordinate used
1220      (and change sign: back to "logical" value: +1 when R increases downward)
1221    o added an include barrier to the default CPP_OPTIONS.h and
1222      removed the #include "PACKAGES_CONFIG.h" from it
1223    o fix a bug in mom_fluxform (from chk51j_post)
1224    
1225    checkpoint51j_post
1226    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1227    o adjusted some flow directives (dynamics, thermodynamics)
1228    o added cubed-sphere case to test cost function
1229    o heckpoint_lev?_directives.h now include
1230      pkg-specific directives, whenever those are enabled.
1231    o Moving pkg-specific flow directives to corresponding pkg
1232      Moving pkg-specific differentiation list to corresponding pkg
1233      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1234      ---> conventions are
1235           - pkg_ad.flow
1236           - pkg_ad_diff.list
1237           - pkg_ad_check_lev?_dir.h
1238    
1239    checkpoint51i_post
1240    o merge of the branch-genmake2
1241      - knowingly breaks the older genmake
1242      - automatic generation of all ALLOW_${PKG_NAME} defines
1243      - new testreport supersedes older testscript
1244    o large number of package inclusion and header cleanups
1245    checkpoint51i_pre
1246    
1247    o new output for adjoin of global ocean vector invariant
1248    o fix for checkpoint of thermodynamic seaice and bulk_force
1249    o Steph gchem various cleanups
1250    
1251    checkpoint 51h_pre
1252    o fixed some single quotes
1253    o modify gchem pkg to be more versatile
1254    o modifications to clean up dic pkg
1255    o add pkg/cfc
1256    
1257    checkpoint51g_post
1258    o provide links for ARPACK and ADM*TLM
1259    o start removing verification/vero/
1260    o update AD-related stuff
1261      (in particular some IF-statements in model/src/ routines)
1262    o adding to verification/global_ocean.90x40x15/ adjoint of
1263      vector invariant setup
1264    
1265    checkpoint51f_post
1266    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1267    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1268      of tracer Green's fucntions for ocean inversion project.
1269    
1270    checkpoint51f_pre
1271    o Added on-the-fly spatial interpolation capability
1272        "USE_EXF_INTERPOLATION" to pkg/exf.
1273      - This is a temporary Cartesian-grid hack until
1274        the super-duper ESMF coupler becomes available.
1275      - See verification/global_with_exf/README for usage example.
1276      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1277        flags and modified pkg/seaice accordingly.
1278    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1279        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1280        non-local transport term.
1281    
1282    checkpoint51e_post
1283    o pkg/mom_vecinv:
1284      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1285      - add time-ave diagnostic of vorticity advection.
1286    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1287    o atmospheric geopotential: - include water vapor effect;
1288                                - use p^kappa in p* scaling.
1289    o land pkg: read initial state from files.
1290    o AIM : add stratospheric drag in the upper level
1291    
1292    checkpoint51d_post
1293    o change function ILNBLNK (=> last non-blank char.) to return zero
1294      (instead of the string length) when the string. char is empty
1295    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1296    o modif's to restore TAMC compatibility
1297      - avoid "_d" constructs in PARAMETER declarations
1298      - avoid interrupting lines by comment lines
1299    o Use cluster local disks for purely local I/O
1300      vs. globally visible disks needed for ctrl stuff
1301      (merged from ecco-branch)
1302      - new active_file_loc... and mdsio_..._loc routines
1303      - affected packages: autodiff, ctrl, grdchk, mdsio
1304    
1305    checkpoint51c_post
1306    o introducing integer flag debugLevel
1307      - debLevZero: suppress all output
1308      - debLevA: standard
1309      - debLevB: equivalent to current debugMode=.TRUE.
1310    o introducing pathname variable mdsioLocalDir for mdsio
1311      that can be specified at runtime
1312      (relevant for cluster I/O to local disk)
1313    `
1314    >>>checkpoint51b_post
1315    adjoint of ptracers
1316    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1317    o extended state in checkpoint_lev?, etc.
1318    o alternative ctrl/cost with tr1 or ptracer
1319    o new comlev1_bibj_ptracers
1320    o new ptracers.flow
1321    o made ptracers_forcing same as external_forcing_s
1322    o added verification for adjoint with ptracers
1323      - adm. grdchk fail so far
1324      - tlm. grdchk OK
1325      - checked tapelev/comlev recomputations: OK
1326    <<<checkpoint51b_pre
1327    
1328    checkpoint51a_post
1329    o added code for biogeochemistry package
1330      - new pkgs: dic, gchem
1331      - new subroutine in ptracers
1332    o modify code for biogeo packages
1333      - in model/src and pkg/ptracers
1334    
1335    checkpoint51
1336    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1337      - autodiff, ctrl, exf, grdchk, seaice
1338      kept separate packages
1339      - cost, ecco, obcs
1340    o updating verification/internal_wave, verification/lab_sea
1341      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1342    
1343    checkpoint50i_post
1344    o Preparing next differentiable checkpoint and sync
1345      of MAIN vs. ecco-branch
1346      - 1st step: this one is differentiable
1347      - 2nd step: next(! not this) checkpoint will have updated packages
1348                  from ecco-branch)
1349    
1350    checkpoint50h_post
1351    o new package "land": provide surface BC for AIM.
1352    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1353    o AIM: use true log-P extrapolation for near surface temp (= as in
1354        F.Molteni paper) ; update aim.5l_cs output.
1355    o New variable in PARM03 for more flexible pickups
1356    o somewhat cleaned package initialisation sequence for
1357      ctrl/ cost/ ecco/ in packages_... routines
1358    
1359    checkpoint50g_post
1360    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1361      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1362      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1363        made the default because of faster convergence than ADI
1364    
1365    checkpoint50f_post
1366    o exf totally restructured
1367      - replaced all exf_set_ routines by one generic exf_set_gen.F
1368        and made sure it's still differentiable
1369      - split exf_getffields.F into new exf_bulkformulae.F
1370      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1371      - updated adjoint/makefile and relevant verif. accordingly
1372    
1373    checkpoint50f_pre
1374     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1375          + change Evap over land. (update aim.5l_cs output)
1376     o added missing .cvsignores and made uniform across expts
1377     o changed configuration of tidal_basin_2d expt
1378     o added pkg/debug functions for tracing code in fatal crashes
1379     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1380     o new fn in pkg/monitor to stop model if solution grows too big
1381     o removed lots of single quotes from comments
1382    
1383    checkpoint50e_post
1384    o make KPP work with PTRACERS
1385     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1386       nearly a copy of kpp_transport_s
1387     - there is no analogue to SurfaceTendencyS, so I have to use
1388       gPtr(of the surface layer) instead
1389    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1390    checkpoint50e_pre
1391    
1392    checkpoint50d_post
1393    o change kpp output from multiple-record state files to single-record state
1394      files analogous to write_state.F
1395    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1396      analogous to the cg2d-related output.
1397    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1398      so that writing to internal file fn (with length 512) fails.
1399    checkpoint50d_pre
1400    
1401    checkpoint50c_post
1402    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1403    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1404    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1405    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1406    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1407    
1408    checkpoint50c_pre
1409    Merging from release1_p13:
1410    o bug fix for pkg/seaice dynamic solver
1411    o Added SEAICE_initialHEFF to pkg/seaice
1412    
1413    checkpoint50b_post
1414    o store u*,v* in gU,V instead of in guNm1,gvNm1
1415    o in order to put the momForcing out of the Adams-Bashforth:
1416      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1417      to timestep.F
1418    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1419    o re-generate output for highly sensitive test-exp:
1420       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1421    
1422    checkpoint50b_pre
1423    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1424    o corrected CPP option mismatch in exf_Bulk... functions for case
1425      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1426    
1427    checkpoint50a_post
1428    o Bug fix for merging between c50 and KPP.
1429      ikey was passed from thermodynamics to kpp_calc via
1430      common block rather than being recomputed in kpp_calc,
1431      in contradiction with new key itdkey.
1432      New key ikppkey created, and tamc.h headers updated.
1433    
1434    checkpoint50
1435    - 2nd step of merge with ecco-branch:
1436      merge changes in ecco-branch back into main trunk
1437    - bug fix in find_alpha
1438    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1439    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1440    - merged some sliced AD support routines
1441    
1442    checkpoint49
1443    merged from ecco-branch:
1444    o exf:
1445      - Enable initialisation of forcing fields to constant
1446        (runtime) values.
1447      - in exf_getffields.F
1448        Reduce i-/j-loop to interior domain, discarding overlaps.
1449        That also fixes wrong TAF-key computations for key_1, key_2
1450        with bulf formulae.
1451      - exf_init.F modify #ifdef for exf_init_evap
1452      - exf_getffieldrec.F, ctrl_getrec.F
1453        The following INT-usages are not safe:
1454          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1455          fldcount = int(fldsecs/fldperiod) + 1
1456        and were modified.
1457    o autodiff: checkpoint_lev...
1458      - updated storing for bulk formulae (some arrays were missing)
1459      - added state for seaice package
1460      - synchronized with main branch
1461    o DIVA:
1462      Modif.s in
1463      - the_main_loop.F
1464      - the_model_main.F
1465      and added cost_final_restore.F cost_final_store.F
1466      o With these changes, it is possible to fully separate
1467        the first forward run to compute the cost function (mdthe_main_loop)
1468        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1469        into separate model executions.
1470        This enables better tuning of DIVA to given queue sizes.
1471      o Loss of cost function value in consecutive DIVA runs is
1472        fixed by storing to 'costfinal' file.
1473      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1474        beginning/end of adjoint integration is accounted for.
1475      The current changes apply to TAF-1.4.26.
1476      TAF has one remaining bug, requiring one manual change
1477      (see MITgcm manual).
1478    o cal: synchronized between MAIN and ecco-branch
1479    
1480    checkpoint48i_post
1481    o Changes to restore differentiability of code w.r.t. previous tag
1482      (mostly adding new routines to make list and replacing
1483      pressure by totPhiHyd).
1484    o Updated and merged grdchk package
1485      - has both ADM and TLM checks
1486      - works for single- and multi-proc.
1487      - output cleaned
1488      - worked successfully for parallel DIVA
1489    o genmake:
1490      - Adding -platform=SP4
1491      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1492    o Modif. for DIVA:
1493      ctrl_unpack should not be called in intermediate DIVA interval.
1494      (similar thing would apply for active files such as
1495      tbar, sbar, psbar, which should not be reinitialised;
1496      only relevant for ecco-branch)
1497    
1498    checkpoint48h_post
1499    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1500    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1501    o Added SEAICE_initialHEFF to pkg/seaice
1502    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1503    
1504    checkpoint48g_post
1505    --- EOS:
1506    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1507      store total Potential in totPhyHyd for diagnostics & EOS.
1508    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1509    --- Pressure/geopotential gradient:
1510    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1511    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1512      ( changes results of global_ocean_pressure )
1513    o NLFS + z-coord.: add eta*Rho' contribution.
1514    o accurate phiHyd when using interface-W at the middle between 2 centers
1515     ( changes results of ideal_2D_oce )
1516    o includes r* 2nd term in potential gradient.
1517    
1518    checkpoint48f_post
1519    Merging from release1_p12:
1520    o Modifications for using pkg/exf with pkg/seaice
1521      - improved description of the various forcing configurations
1522      - added basic radiation bulk formulae to pkg/exf
1523      - units/sign fix for evap computation in exf_getffields.F
1524      - updated verification/global_with_exf/results/output.txt
1525    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1526      (SBO) core products, including oceanic mass, center-of-mass,
1527      angular, and bottom pressure (see pkg/sbo/README.sbo).
1528    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1529      to avoid negative values in shallow regions.
1530      - updated verification/natl_box/results/output.txt
1531      - updated verification/lab_sea/results/output.txt
1532    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1533    o Added useSingleCpuIO option (see PARAMS.h).
1534    o Updated useSingleCpuIO option in mdsio_writefield.F to
1535      work with multi-field files, e.g., for single-file pickup.
1536    o pkg/seaice:
1537      - bug fix in growth.F: QNET for no shortwave case
1538      - added HeffFile for specifying initial sea-ice thickness
1539      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1540    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1541      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1542    o pkg/seaice:
1543      - adjoint-friendly modifications
1544      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1545    
1546    checkpoint48e_post
1547    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1548    o dynamics: change definition of computational domain & adapt mom_fluxform
1549      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1550    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1551        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1552        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1553        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1554        inverted_barometer solid-body.cs-32x32x1
1555      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1556    
1557    checkpoint48d_post
1558    o in preparation for r*:
1559     a) use pre-computed gradient of hydrostatic potential:
1560        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1561     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1562        => affects results of glob_oce_pressure (different truncation error)  
1563      update output.txt of ideal_2D_oce & global_ocean_pressure
1564    
1565    checkpoint48d_pre
1566    o in preparation for r*:
1567      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1568      pass the 2 comp. of the grad. as arguments to momentum S/R.
1569      but for the moment, only used if it does not change the results.
1570    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1571    
1572    checkpoint48c_post
1573    Modifications in treatment of initial flux forcing controls
1574    to avoid extra storing of flux fields.
1575    
1576    checkpoint48c_pre
1577    o Added tidal_basin_2d experiment (currently 1D!)
1578    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1579    
1580    checkpoint48b_post
1581    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1582     (modification to pressure gradient not yet implemented)
1583    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1584      (for U & V) that are used for vertical advection of momentum.
1585    
1586    checkpoint48a_post
1587    o In preparation for r*, use temp. array to compute vertical transport
1588       in flux-form momentum pkg. => change results of few test-exp.
1589      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1590                        lab_sea, natl_box & plume_on_slope
1591    
1592    checkpoint48
1593    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1594    
1595    checkpoint47j_post
1596    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1597    o moved adexch from forward_step to addummy_in_stepping
1598    o added exch in ctrl_map_...
1599    o aveFreq.=0. at end of cost_final to avoid overwrite in
1600      reverse checkpointing loop
1601    o Yet more changes in gmredi:
1602      * adgmredi_calc_tensor
1603        avoiding all recomputation of gmredi_slope_limit
1604      * adgmredi_x/y/rtransport
1605        added flag for excessive storing to avoid recomp. of
1606        u/v/rtans, dTdx/y/z
1607        -> this is not really necessary and very memory-consuming
1608      * adgmredi_slope_psi:
1609        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1610      * gmredi_slope_limit
1611        re-activated full calculation of taperfct for case 'ac02'
1612    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1613    
1614    checkpoint47i_post
1615    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1616    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1617      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1618    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1619    o gmredi: fix few bugs.
1620    
1621    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1622    This will be a good checkpoint to plug into the ecco-branch.
1623    o few modif.'s to get latest version adjointed
1624      (mainly kick out code in ini_linear_phisurf)
1625    o modif's to run adjoint with exactConserv
1626    o case GM_BOLUS_ADVEC should be cleaned
1627      S/R gmredi_slope_psi should be cleaned
1628    o verification/carbon now has exactConserv=.TRUE.
1629    
1630    checkpoint47g_post
1631    o time-average AIM output: becomes independent from statvars time-average
1632      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1633    o After TAF bug fix:
1634      Tested adjoint of gmredi package.
1635      Tests were done with checkpoint47 rather than with latest
1636      checkpoint47f_post since the latter is broken for the adjoint
1637      verification/carbon/ contains both ADM and TLM gradient checks.
1638    Here they are, before they get changed/lost/stolen.
1639    Mostly modif.'s to fix numerical sensitivities.
1640    Gradient checks OK for
1641    - GM_taper_scheme:
1642      * clipping
1643      * ac02
1644      * linear
1645      * glw91
1646      * dm95
1647      * ldd97
1648    - GMREDI_OPTIONS:
1649      * GM_VISBECK_VARIABLE_K
1650      * GM_NON_UNITY_DIAGONAL
1651      * GM_EXTRA_DIAGONAL
1652      * GM_BOLUS_ADVEC
1653    in conjunction with data.gmredi parameters to be checked in
1654    in a few minutes under verification/carbon/code/
1655    
1656    checkpoint47f_post
1657    Merging from release1_p10:
1658    o modifications for using pkg/exf with pkg/seaice
1659      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1660        and SEAICE_EXTERNAL_FLUXES
1661      - pkg/exf CPP options EXF_READ_EVAP and
1662        EXF_NO_BULK_COMPUTATIONS
1663      - usage examples are Experiments 8 and 9 in
1664        verification/lab_sea/README
1665      - verification/lab_sea default experiment now uses
1666        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1667    
1668    checkpoint47e_post
1669    o created a tag prior to creating a branch
1670    
1671    checkpoint47d_post
1672    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1673      at the bottom boundary had an erroneous half slip boundary condition
1674    o added bottom drag and no slip boundary condition capabilities to
1675      oceanic pressure coordinates code
1676    o added new verification experiment global_ocean_pressure, this experiment is
1677      also described in the tutorial section of the manual
1678    checkpoint47d_pre
1679    
1680    checkpoint47c_post
1681    o Added a verification experiment for a global cubed-sphere ocean run
1682      -  verification/global_ocean.cubed32x32x30
1683      -  uses pkg/therm_seaice and pkg/bulk_forcing
1684    
1685    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1686    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1687      when using P-coordinate; only implemented for atmospheric config.
1688    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1689      NOTES: requires option NONLIN_FRSURF to be "#define".
1690    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1691    
1692    checkpoint47b_post
1693    Merging from release1_p9:
1694    o pkg/seaice
1695      - removed GOTO's and added taf directives
1696      - double precision constants to reduce the g77 (Linux)
1697        to F77 (SGI) differences reported in release1_p8
1698    o tools/genmake
1699      - added SGI options
1700    o verification/testscript
1701      - updated to that of checkpoint47a_post
1702    o verification/global_ocean.90x40x15/input/eedata
1703      - modified for SGI f77 compatibility
1704    o verification/lab_sea
1705      - added description of sea-ice model
1706      - added missing matlab routines
1707      - added test of thermodynamics parallelization
1708    
1709    checkpoint47a_post
1710    o new pkg: aim_v23
1711     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1712       for now, keep the same surface forcing as before.
1713     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1714     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1715     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1716    o add diagnostic of surface correction term in monitor output
1717    
1718    o bulk_force and therm_seaice
1719    - Two packages:  bulk_force (Bulk forcing)
1720      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1721    - Earlier integration from Stephaine Dutkiewicz
1722      and Patrick Heimbach.
1723    - Two ifdef statements for compile time,
1724       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1725    
1726    checkpoint47
1727    differentiable version of checkpoint46n_post
1728    o bug fix in quasihydrostaticterms
1729    o * "clean" adjoint code (in terms of extensive recomputations)
1730        can now be obtained for all GMREDI options (i.e. for
1731        - GM_VISBECK_VARIABLE_K
1732        - GM_NON_UNITY_DIAGONAL
1733        - GM_EXTRA_DIAGONAL
1734        - GM_BOLUS_ADVEC )
1735      * However, wrong gradient check problem remains unsolved.
1736      * New CPP options have been introduced for different
1737        tapering schemes
1738    o external_fields_load now part of differentiation list
1739    o pressure needs multiple storing;
1740      would be nice to have store_pressure at beginning or
1741      end of forward_step, e.g. by having phiHyd global (5-dim.)
1742      (NB: pressure is needed for certain cases in find_rho,
1743      which is also invoked through convective_adjustment).
1744    o recomputations in find_rho for cases
1745     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1746    o #define ATMOSPHERIC_LOADING should be differentiable
1747    o ini_forcing shifted to begining of initialise_varia
1748    o Incorporating QNVS line search routines into MITgcm
1749      (this is separate code, and therefore not under pkg)
1750      lsopt/, optim/
1751    o Updated verification/carbon/
1752      - #define GM_VISBECK_VARIABLE_K
1753      - GM_taper_scheme    = 'ldd97'    
1754    
1755    checkpoint46n_post
1756    Merging from release1_p8:
1757    o verification/natl_box:
1758      updating new external_fields_load routine
1759    o New package: pkg/seaice
1760      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1761      The sea-ice code is based on Hibler (1979-1980).
1762      Two sea-ice dynamic solvers, ADI and LSR, are included.
1763      In addition to computing prognostic sea-ice variables and diagnosing
1764      the forcing/external data fields that drive the ocean model,
1765      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1766      The implied surface heat flux is then stored in variable
1767      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1768      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1769      non-local transport term.  Because this call precedes model
1770      thermodynamics, temperature under sea-ice may not be "exactly" at
1771      the freezing point by the time theta is dumped or time-averaged.
1772      N.B.: fairly large differences in accuracy occur across
1773            different platforms/compilers; comparison between
1774            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1775            generated output gives:
1776       T           S           U           V
1777      C D M    c        m  s        m  s        m  s        m  s
1778      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1779      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1780      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1781    
1782      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1783    o GAD:
1784      - generated new common blocks to account for call of
1785        same gad routines with differing traceridentities
1786        (needed to modify tracerIdentity indices in GAD.h)
1787      - generated separate common blocks for case useCubedSphereExchange
1788        (Department of Futurology)
1789      - parameter lists to gmredi_?transport: added tracerIdentity
1790      - added new key indices to tamc.h
1791    o external_fields_load:
1792      - added this routine to TAF list
1793      - needed to make some common blocks global and additional storing
1794        along the same lines as exf package (checkpoint_lev?_directives.h)
1795    o exf:
1796      updated external forcing package
1797      - bug fixes carried over from ecco-branch
1798        (missing OBCS_OPTIONS.h in two routines)
1799      - enable easy to use "no forcing".
1800      - added exf I/O for atmospheric loading
1801      - added exf I/O for runoff data
1802      - transfered scaling between exf <-> MITgcm to exf namelist
1803    o Adding new verification experiment global_with_exf.
1804      This verification experiment is almost identical to the
1805      global_ocean.90x40x15 experiment, except that it uses
1806      the exf (and cal) package instead of the
1807      external_fields_load routine (cf README file).
1808    
1809    checkpoint46m_post
1810    o modified testscript to return -- when there are no lines of "%MON" output
1811    o added new flag "quasiHydrostatic" for QH mode
1812      and new routine quasihydrostaticterms()
1813    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1814      New routine: mom_u_coriolis_nh()
1815    o fixed sign of non-hydrostatic metric terms in u and v equations.
1816      Depend on correct sign of gravitySign.
1817    o added work.pc* to .cvsignore in aim directories using ifc
1818    o introduced flag for controllin non-hydrostatic metric terms
1819    o removed gravitySign from PARM04
1820    o switched to g77/ifc from pgf77 in aim experiments
1821    
1822    checkpoint46l_post
1823    o made convective adjustment work with pressure coordinates:
1824     - changed the direction of k-loop in convective_adjustment.F for the
1825       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1826     - adjusted the reference pressure k-index in convective_adjustment.F
1827     - adjusted the convection condition in convect.F (in analogy to
1828       calc_ivdc.F)
1829     - convective_adjustment no longer computes anything on the halos
1830     - removed the warnings about negative salinity from find_rho.F and
1831       find_alpha.F; instead the new routine look_for_neg_salinity, called
1832       at the beginning of find_rho, find_alpha, and find_beta, does a
1833       check of the entire slice, if CPP-option
1834       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1835    checkpoint46l_pre
1836    
1837    checkpoint46k_post
1838    o fixed the verification/global_ocean.90x40x15 experiment:
1839     - new bathymetry (the world according to A., JMC, and M.)
1840     - new initial fields and forcing fields (*.bin files)
1841     - new POLY3.COEFFS (for the next release one should switch to a full
1842       equation of state: JMD95P or MDJWF)
1843     - fixed several errors and redundancies in the data file
1844     - experiment uses looped cells
1845     - added matlab directory with diagnostic scripts for plotting of output
1846    
1847    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1848     - read AIM physics parameters from a file (data.aimphys)
1849     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1850    
1851    checkpoint46j_post
1852    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1853    o move wVel computation at the end of the time step, in S/R integr_continuity
1854    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1855    o update timeave pkg for wVel diagnostic.
1856    checkpoint46j_pre
1857    
1858    checkpoint46i_post
1859    o Clean up AIM package (and keep the results unchanged):
1860      include CPP_OPTION and use IMPLICT NONE in all routines ;
1861      declare all the variables _RL ; use _d 0 for all numerical constants.
1862      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1863    
1864    checkpoint46h_post
1865    o cleaned up the use of rhoNil and rhoConst.
1866      - rhoNil should only appear in the LINEAR equation of state, everywhere
1867        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1868        and the dynamical equations are all divided by rhoConst
1869    o introduced new parameter rhoConstFresh, a reference density of fresh
1870      water, to remove the fresh water flux's dependence on rhoNil. The default
1871      value is 999.8 kg/m^3
1872    o cleanup up external_forcing.F and external_forcing_surf.F
1873      - can now be used by both OCEANIC and OCEANICP
1874    checkpoint46h_pre
1875    
1876     Added code to convert surface volume flux (fresh water) into
1877     a mass flux when using P coordinates in the ocean (OCEANICP).
1878     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1879    
1880    checkpoint46g_post
1881    o Include a new diagnostic variable phiHydLow for the ocean model
1882      - in z-coordinates, it is the bottom pressure anomaly
1883      - in p-coordinates, it is the sea surface elevation
1884      - in both cases, these variable have global drift, reflecting the mass
1885        drift in z-coordinates and the volume drift in p-coordinates
1886      - included time averaging for phiHydLow, be aware of the drift!
1887    o depth-dependent computation of Bo_surf for pressure coordinates
1888      in the ocean (buoyancyRelation='OCEANICP')
1889      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1890        Theta, Salinity, and Pressure in the parameter list. This routine is
1891        presently contained in find_rho.F. This routine does not give the
1892        correct density for 'POLY3', which would be a z-dependent reference
1893        density.
1894    o cleaned up find_rho
1895      - removed obsolete 'eqn' from the parameter list.
1896    o added two new verification experiments: gop and goz
1897      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1898    checkpoint46g_pre
1899    
1900    checkpoint46f_post
1901    o Enable tangent linear (forward mode) gradient checks:
1902      - extended active file handling to g_... files
1903      - added TANGENT_SIMULATION to theSimulationMode
1904      - extended grdchk package accordingly
1905    o added tangent linear setup in verification/carbon/code_ftl
1906    o added adjoint setup in verification/front_relax/code_ad
1907    
1908    checkpoint46e_post
1909    o Added new equation of state -> MDJWF
1910      - EOS of McDougall et al., 2002, JAOT, submitted
1911      - caveat: the equation of state is only valid for a smaller (more
1912        realistic?) range of values than JMD95P/Z and UNESCO
1913      - added masks to the calculation of pressure in store_pressure
1914      - added more check values for density in check_eos (ini_eos.F), some of
1915        the old check values are out of the range of the MDJWF-eos, so don't
1916        expect perfect matches for those
1917    checkpoint46e_pre
1918    
1919    checkpoint46d_post
1920    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1921      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1922      case of pressure coordinates. eosType='JMD95Z' in
1923      combination with buoyancyRelation='OCEANICP' now causes an error.
1924    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1925      in find_alpha/beta.
1926    checkpoint46d_pre
1927    
1928    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1929      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1930    
1931    checkpoint46c_post
1932    o Changes necessary for ocean in p-coordinates
1933     -  Added new buoyancy relation = 'OCEANICP'
1934     -  Added new parameters = gravitySign (this used to be contained inside
1935        the factor dRdZ which I added when we first switched to R coordinates).
1936     X GM/Redi is not compatible (yet)
1937     X bottom drag and no-slip need to be debugged.
1938    checkpoint46c_pre
1939    
1940    checkpoint46b_post
1941    o Added new equation of state -> JMD95Z and JMD95P
1942      - EOS of Jackett and McDougall, 1995, JAOT
1943      - moved all EOS parameters into EOS.h
1944      - new routines ini_eos.F, store_pressure.F
1945    o Added UNESCO EOS, but not recommended because it requires
1946      in-situ temperature (see JMD95)
1947    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1948      unesco.f to be used with POLY3
1949    checkpoint46b_pre
1950    
1951    checkpoint46a_post
1952    o Added (atmospheric) pressure loading
1953      - new field in FFIELDS.h, etc...
1954      - new cpp flag ATMOSPHERIC_LOADING
1955    o Changed hFacC to _hFacC in calc_phi_hyd.F
1956    o Added SHORTWAVE_HEATING to some files for consistency
1957    checkpoint46a_pre
1958    
1959    checkpoint46
1960    further merges from release1_p5
1961    o new ctrl package
1962      - adopted from ECCO environment to enable optimization
1963      - added Eliassen Palm fluxes to controls
1964    o added Eliassen Palm flux controls to gradient check package
1965    o cost package
1966      - Compatible with new ctrl package
1967      - added Eliassen Palm cost hooks
1968      - modif's of existing cost functions
1969    o Adjoint-related bug fixes in kpp:
1970      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1971      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1972    o autodiff package
1973      - flow directives:
1974        + new for S/R do_the_model_io
1975        + enhanced for S/R checkpoint
1976        + new gmredi.flow
1977      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1978        disable adcommon.h/g_common.h by default.
1979      - fixed problem for adjoint of global_max
1980    o modified verification/carbon/
1981    o New setup for adjoint of global_ocean
1982    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1983    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1984    o incorporated hooks for sponge layer code (external_forcing.F)
1985    
1986    checkpoint45d_post
1987    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1988    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1989      (affects plume_on_slope "cg2d" output)
1990    o add new parameter deltaTfreesurf for free-surface time stepping
1991    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1992    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1993    o change phiMin in exp1 (to agree with documentation)
1994    o add new flags:
1995     - T,S forcing inside/outside Adams-Bashforth
1996     - turn off temp,salt advection and/or forcing
1997     - for each tracer, define internal flag for multiDimAdvection & A-B
1998    o monitor: change definition of KE to check conservation of Energy
1999    
2000    checkpoint45c_post
2001    o Removed f90 comments ("!")
2002    o Modified initialisations to enable exf package for MITgcm
2003      (without invoking ECCO_PACKAGE).
2004    o modifications to gradient check package (Martin Losch)
2005      - enable centered differences
2006      - modified format of standard output
2007    
2008    checkpoint45b_post
2009    o cleaned exchange calls in cg2d
2010    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2011    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2012      to configure barotropic setup (Martin Losch)
2013    o moved some initialisations within bi,bj loop in dynamics
2014      (TAF flow dependency)
2015    o in initialise_varia, moved call packages_init_variables
2016      before convective_adjustment_init
2017      (corresponding adjustment of TAF tape initialisation).
2018    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2019    
2020    checkpoint45a_post
2021    o compute Rho over the whole domain (extend iMin,jMin indices)
2022    o specific exchange for X-slice domain (case Ny=1)
2023  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2024  o solve_for_pressure : set cg2d_x to zero where OBCS are applied  o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2025    

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