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revision 1.66 by jmc, Tue Mar 5 15:36:06 2002 UTC revision 1.543 by edhill, Sat Sep 10 18:30:05 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 various changes to mnc including:
8      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
9      - output can now be grouped so that all files within a group
10          change the ITER portion of their names in lock-step together
11      - can now read ("global") PER-FACE (in addition to PER-TILE) files
12          and works with both EXCH1 and EXCH2 (but needs more testing)
13      - writing works for all verification test cases w/ g77 on Linux
14    
15    checkpoint57r_post
16    o make MNC variable initialization happen earlier
17    o add diagnostics for (almost) each term of the momentum Eq.
18    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
19    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
20    o remove MINIMAL_TAVE_OUTPUT option ;
21      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
22    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
23      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
24    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
25    o add time-dependent SST, SSS control
26    o cost terms in ecco/ modularized (new cost_generic.F)
27    o cost_averages routines are modularized (new cost_averagesgeneric.F)
28    o new infrastructure for seaice model vs. obs misfits in seaice/
29      * driver from the_main_loop.F is seaice_cost_driver.F
30      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
31      * gradient check in Exp. 6a of natl_box_adjoint/
32    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
33      (see README file)
34    
35    checkpoint57q_post
36    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
37    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
38      - bug was reported by Jean-Michel and Ian Fenty
39    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
40      update exp. cpl_aim+ocn output.
41    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
42      Needed for high-res. runs with large global files
43      to be able to limit tapelev size
44    o Changed some tests for adjoint:
45      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
46      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
47      * global_ocean.90x40x15/ back to default 3-level checkpointing
48    o Modifications to enable scripted COMMON to MODULE conversion
49      * verification/OpenAD/code/ has necessary scripts and description;
50      * converts, compiles and runs successfully;
51    
52    checkpoint57p_post
53    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
54    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
55      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
56    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
57    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
58      (was already the case for dissipation with mom_vecinv,
59       and also the case for grad.PhiHyd when staggered-timeStep)
60      This will allow to put dissipation out-off the AB time-stepping.
61     Unfortunately, affects truncation error. Update output of exp. that "fails"
62      (cg2d matching number) and leave the others for later: front_relax(10),
63      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
64      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
65    
66    checkpoint57o_post
67    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
68      (2) its ready to be documented during the 20050801 DocFest
69    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
70      for ideal_2D_oce and lab_sea on linux_ia32_g77
71    o set to #undef CTRL_SET_OLD_MAXCVARS_30
72      in global1x1_tot/code_seaice_adj to access indices 32, 33
73      (worth another tag)
74    
75    checkpoint57n_post
76    o adding precip control xx_precip 32
77    o adding swflux control xx_swflux 33
78    o Replacing 10 forcing penalty cost routines by 1 generic.
79    o Implementing partitioning in time-mean and variable adjustment
80      for atmos. state.
81    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
82    o in natl_box_adjoint:
83      * updated exp 1 to 10
84        (but does not have time-mean vs. variable split results yet)
85    o updated global1x1/*_seaice_adj/
86      to incorporate latest changes
87    o enable useSingleCpuIO for mdsio vector routines
88      (applies in particular to tapelev I/O)
89    o removed inefficient K-loop in all active_file*control*.F
90    
91    checkpoint57m_post
92    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
93      and advect_cs (use EXCH-2 and standard cs-32 grid files).
94    o pkg/exch2: filling of face-corner halo regions is optional
95      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
96    
97    checkpoint57l_post
98     tag before updating tutorials (pre-release-2)
99    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
100       for output and interpolation of input fields onto model grid)
101    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
102       Affects results of exp. rotating_tank ; update output.txt.
103    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
104          and taking the square quantity and/or using a fraction-weight field.
105    o fix aim_diagnostics_init.F mate numbers.
106    o add mnc output capability to diagnostics/diagstat and update
107      our cvsignore files for the ACSII output generated
108    
109    checkpoint57k_post
110    o lab_sea now uses diagnostics package and provides a suite of
111      new EXF diagnostics output.
112    
113    checkpoint57j_post
114    o exf
115      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
116        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
117        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
118      * extended diagnostics output
119        - now includes all EXF variables
120        - hs, hl moved to common block
121        - separate S/R for diagnostics, called after ctrl vector is added
122        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
123        - EXFqnet contains true Qnet (i.e. includes qsw)
124      * updated verif. lab_sea, global_with_exf
125      * Rearranging hflux (exf_mapfields -> exf_getforcing)
126        to ensure that diagnostics sees a true EXFqnet
127    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
128    o diagnostics pkg: change pointers so that 1 diagnostic can be used
129      several times with different frequencies.
130    o mnc-ify the thsice package as requested by Daniel Enderton
131      - the monitor--MNC output needs work
132      - many attributes need to be added (most are currently blank)
133    o mnc-ify theaim_v23 package as requested by Daniel Enderton
134      - many attributes need to be added (most are currently blank)
135    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
136    o add Sadourny like discretization to the 4th.O vorticity advection scheme
137    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
138      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
139         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
140    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
141     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
142    
143    checkpoint57i_post
144    o Diagnostics package was changed: diagnostic allocation is now deactivated
145      by setting an empty file name in the namelist (used to be by setting 0 frequency)
146    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
147      add 1rst Order upwind vertical Shear.
148    o add a quick fix for A/B checkpointing in OFFLINE mode
149    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
150      end-run around the C/Fortran linking horror in eesup/src/timers.F
151    o added pkg/runclock: allows user to terminate run based on wall clock
152    o added non-hydrostatic scaling parameter: nh_am2
153    o pkg/my82: futile attempt to make results compiler-independent by adding
154      some "_d 0", etc. no effect.
155    o for mnc output, fill the 'T' coordinate var with myTime and create a
156      separate 'iter' variable for iteration count
157    o pkg/diagnostics:
158      add new capability: output of Global/Regional & per-level statistics ;
159      tested against monitor output (including land & thSIce) on various exp.
160    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
161    
162    checkpoint57h_done
163      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
164      data.diagnostics, data.gchem, data.ptracers) is done.
165    
166    o pkg/diagnostics: prepare for Global/Regional statistics.
167      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
168    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
169      and rename it: DIFFERENT_MULTIPLE
170    
171    checkpoint57h_post
172    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
173    o pkg/diagnostics: change output frequency, now in seconds (instead
174      of Nb of iterations). This requires to change data.diagnostics.
175    checkpoint57h_pre
176    
177    o in mnc, let the user create the output dir if both mnc_outdir_date
178      and mnc_outdir_num are false
179    o add fflags() to pkg/diagnostics which allows one to specify, on a
180      per-file basis, the file precision [default behavior is unchanged]
181    o added diagnostics to pkg/kpp, including computation of mixed layer
182      depth based on a temperature/density criterion
183    o updated verification/natl_box to test the new pkg/kpp diagnostics
184    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
185    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
186    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
187      not mnc -- this mistake was found by JMC and is now corrected
188    
189    checkpoint57g_post
190    o add Adams-Bashforth 3rd Order time stepping:
191      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
192      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
193    checkpoint57g_pre
194    
195    o make lambda[Theta,Salt]ClimRelax spatially varying
196      (default remains spatially uniform constant based on tau)
197    o added new control variables
198      * init. uVel, vVel, etanN
199      * lambda[Theta,Salt]ClimRelax
200    o separate masks used for ctrl_pack/unpack 'from write_grid' output
201      (suggested by G. Forget)
202    
203    checkpoint57f_post
204    o add parameter "baseTime" = model base time = time at iteration zero
205      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
206      account for baseTime shift
207    o move Coriolis arrays from PARAMS.h to GRID.h
208    checkpoint57f_pre
209    
210    o mnc-ifying the seaice package
211    o introduced an alternative length scale calculation for use in the limiting
212      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
213    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
214    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
215      as well as grad(vort3).  Made it compatible with both approximate form
216      for the cubed sphere and full form of these gradients.  Added flag
217      useFullLeith to select between approximate and full form.  
218    o add "d0" in getcon.F to reduce differences between compilers/platforms
219      update output.txt of exp. fizhi-gridalt-hs
220    o change port_rand funtion to allow to set the seed.
221    o fix obscure MNC bug involving conversion between reals and integers
222      - it caused no problems with certain (eg. gcc, ifc) compilers but the
223        new version is now more standards-compliant
224    o adjoint-related modifications
225      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
226      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
227      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
228    
229    checkpoint57e_post
230    o Adding eddy stress controls a la Ferreira et al.
231    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
232    
233    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
234      update output.txt of exp. fizhi-gridalt-hs
235    o add more "Z" dimensions and associated coordinate vars to MNC
236    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
237    o parameter calendarDumps: when set, approximate months (30-31 days) and years
238      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
239      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
240      months and years.  Requires pkg/cal.
241    o diagnostics: add pickup functionality
242      - off by default for backwards compatibility
243      - current version only uses MDSIO -- MNC will be added
244    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
245    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
246    
247    checkpoint57d_post
248    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
249    o modify verification/ideal_2D_oce so that it tests the creation of mnc
250      output from the diagnostics package
251    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
252    o make genmake2 more portable by using ".$FS" instead of ".f" for more
253      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
254    o add coordinate variables to the MNC output from the diagnostics package
255    o change MNC-flags default value: true when useMNC=TRUE
256    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
257      the ability (off by default) to read the grid information using MNC
258    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
259    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
260    o do snap-shot diagnostics at the middle of the time-interval (instead of
261      at the end).
262    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
263      new test for AIM with thSIce + slab-ocean
264    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
265    o move state variable diagnostics to the beginning of the time step ;
266      (note: still needs some work specially for snap-shot diagnostics)
267      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
268    
269    checkpoint57c_post
270    o Change testing option (-ieee) to get closer agreement between g77 & ifort
271    o generate new output.txt files on faulks with g77 & the new -ieee option
272    checkpoint57c_pre
273    
274    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
275      update output.txt of exp. global_ocean.90x40x15
276    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
277      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
278    o add saltFlux(+File) forcing capability with periodicExternalForcing
279    o allow to use pkg diagnostics for GM-Redi & ThSIce output
280    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
281    o improvements for the MNC output from DIAGNOSTICS:
282      - correct handling of the unlimitied dimension
283      - all dims now have associated coordinate variables
284      - variables located at U, V, and Corner ("Z") points are now written
285        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
286        *all* data points are output
287    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
288    o added pkg/seaice/seaice_monitor.F
289    o mdsio_readfield.F can now read files visible only to master MPI process.
290    o pkg/seaice: some test code for ice-modified ocean stress
291    o exf_getffields interpolation defaults to bilinear for all scalar forcing
292      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
293      spurious negative numbers for precipitation and humidity.  Will cause
294      some small numerical differences for integrations using pkg/exf/exf_interp.F.
295    o pkg/ctrl/
296      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
297        May be enabled via doPackDiag
298      *  introduce z-scaling of
299         + gradient (doZscalePack) and
300         + control (doZscaleUnpack)
301    o pkg/mdsio/
302      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
303      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
304    
305    checkpoint57b_post
306    o simplify options in diagnostics_fill arguments (remove weird combinations)
307    o fix MNC coordinate variables so that they now contain per-face index
308      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
309      general, EXCH2 grids are only aligned to a "local" coordinate system
310    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
311    o Implement instantaneous output within pkg diagnostics:
312      setting a negative frequency in data.diagnostics produces
313     "snap-shot" output (as opposed to time-average if freq > 0)
314    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
315      NOTE: change ptracer diagnostics name: use 2 characters to work with
316            more than 9 tracers. Add also diagnostics of advect & diffus flux.
317    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
318      becomes the coordinate variable for the 'T' dimension
319    o add CF-style coordinate variables to MNC
320      - just a first cut:  numbers are meaningless on the cubesphere and
321        missing along the T axis but otherwise it works!
322    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
323    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
324    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
325      this is based directly on what the model compute, so that the content of
326      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
327    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
328    o clean up build options files for SunOS, in particular
329      - remove -traditional from xmakedepend
330      - change -xarch=v9 to -xarch=native for f77
331      - restore use of make (not gmake)
332      - add CC=gcc if using g77
333    o changes per discussion of AM, JMC, & EH3 today:
334      - move redundant "grid" variables out of "state" -- in preparation of
335        creating proper CF-style coordinate variables and in recognition
336        that any/all grid variables can be easily copied (eg. w/NCO) from
337        the grid files into any of the other NetCDF files
338      - *always* output grid variables with MDSIO (this will eventually be
339        changed)
340      - output MNC grid file if useMNC is true
341    o every instance of _END_MASTER() has been found and replaced with
342      _END_MASTER( myThid ) in order to satisfy certain picky Sun
343      preprocessors
344    o re-arrange diagnostics pkg initialisation:
345     - allow each package to extend the available diagnostics list
346     - add some checking and fix small problems (multi-threaded, ...)
347     - new S/R diagnostics_fill (replace fill_diagnostics):
348       look through the short list of active diag. (instead of the long list)
349       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
350    
351    checkpoint57a_post
352    o this set of changes restores TAMC compatibility
353      tested for global_ocean.90x40x15 adjoint on trough
354      (what a pain)
355    
356    checkpoint57a_pre
357    o some modifs in tools/build_options for sunos
358    o call ctrl_pack for ctrl at end for optimcycle=0
359    
360    checkpoint57
361    o add horizontal bi-harmonic viscosity for vertical velocity
362      - new parameter viscA4W (defaults to viscA4)
363      - affects only non-hydrostatic code
364      - to be done: no-slip lateral boundary conditions
365    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
366    o implement Implicit Vertical advection for pTracers
367    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
368      (implemented also for implicit vertical diffusion & advection)
369    o OBCS: extend application of tracer open boundary conditions
370      to a strip beyond the boundary of width Olx/Oly
371    o add call monitor to TAF set of required calls (flow directives)
372      and include in natl_box_adjoint
373    o untangle a few ifdefs related to cost, ctrl, autodiff
374      untangel a few ALLOW_ECCO_OPTIMIZATION
375    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
376      (theta2, salt2 in ecco_cost_weights)
377    
378    checkpoint56c_post
379    o OBCS as control variables
380      - update ctrl_ad_diff.list, obcs_ad_diff.list
381      - remove balance of obcs controls from default
382      - fix index bug nobcs in ctrl_init
383      - fix dummy fields filen in ctrl_pack
384      - add dummy weights for obcs
385    o lsopt: comment out fort.94 output
386    o optim:
387      - remove unnecessary header files
388      - adjusted namelists
389      - add xerbla.F to Makefile
390    o exf:
391      - multiple modifications of exf_check_range
392      - unit change in exf_init_runoff from [m/year] to [m/s]
393    o mdsio:
394      - i/o-vector change debugLevel from debLevA to debLevB
395    
396    checkpoint56b_post
397    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
398      is called from DO_THE_MODEL_IO
399      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
400      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
401      - clean up PTRACERS_WRITE_TIMEAVE a little
402    o add another verification experiment that tests both the cfc-pkg and
403      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
404      reactive tendencies treated inline with regular timestepping
405    o testreport previously did a lousy job of comparing small numbers, so
406      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
407      implemented in the little c-progam tmp_cmpnum.c which is embedded in
408      testreport.
409    o ptracers_monitor: bug fix for MPI
410    
411    checkpoint56a_post
412    o GCHEM: finish reorganizating the package
413      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
414        (introduces another 3D-array for each passive tracer, but only if
415        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
416        gchemTendency is not needed because the timestep is done separately)
417      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
418      - GCHEM is now---more or less cleanly---separate from PTRACERS
419      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
420        so clear to me how that should be done in a general way.
421    o CFC: improve formatting of output in CFC_ATMOS
422    o PTRACERS:
423      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
424        that ALL experiments with ptracers enable can be checked. This makes
425        GCHEM_MONITOR obsolete.
426      - include a runtime parameter PTRACERS_monitorFreq that defaults to
427        monitorFreq
428      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
429    o add PTRACERS (PTR0[1-5]) to testreport output
430    o exf_check_range:
431      * default changed to .TRUE.
432      * will check values for niter0 if debLevA, every timestep if debLevB
433      * STOP in exf_check_range if 'out of range'
434      * range chosen generous to allow for potential extema
435      TBD: a version with stricter range
436           permitted range would be runtime parameters
437    o GMredi:
438      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
439      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
440      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
441    o GCHEM:
442      - move call to GCHEM_FORCING_SEP, so that it is now called before
443        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
444      - introduced a useGCHEM runtime flag and applied it everywhere.
445      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
446        this flag is now only visible within GCHEM-pkg routines.
447      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
448        be replaced by a 3D array that is computed before thermodynamics; for
449        this, the tracer ID iTracer had to be included into the parameter list
450        of ptracers_forcing
451      - set up forward_step to call gchem_forcing, that will replace
452        gchem_forcing_int in ptracers_forcing
453      - cleaning up
454    o small cleaning of exch2: remove files that are also in eesupp/src
455    
456    checkpoint56
457    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
458    o mnc: cleanup "full" files--fixes out-of-memory problem
459    o ECCO-GODAE
460      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
461      * fully merged and updated from SIO code
462        windstress sign change affects
463        - exf_inscal_[u/v]stress
464        - sign of xx_tau[u/v] adjustments
465        - signs in cost_scat
466      * ctrl_get_gen: avoid update of tau[u/v] for first few days
467      * natl_box_adjoint updated and compressed
468      * 2-level checkpoint switch added
469        (tested in EXP. 1 of natl_box_adjoint)
470      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
471    o SVD
472      * first complete, non-hacked version for SVD calculations
473      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
474        performed via direct access files admtlm_vector.it????
475        (via ctrl_[un]pack)
476      * optimcycle is used for ARPACK iteration counter
477        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
478      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
479        and add linear transforms where necessary
480      * controls are initial/final SST, SSS (can be extended; need to check
481        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
482    o mdsio: filename info to both stderr, stdout
483    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
484      from sign change
485    
486    checkpoint55j_post
487    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
488      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
489    o add consistent build directories and .cvsignore files to verification
490    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
491    o make all subroutines 30 or less characters in length for certain older
492      compilers to work (a thorough search only turns up two routines in
493      pkg/ptracers)
494    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
495      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
496    
497    checkpoint55i_post
498    o change arrays for total vertical diffusivity (2.D if explicit,
499      3.D if implicit) ; each ptracer uses its own background value.
500    o added mnc/NetCDF output capability to ocn_compon_interf
501      - added bits to verification/cpl_aim+ocn so that it can run on
502        ITRDA and other clusters without the mpirun "-wd" option
503    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
504      configuration
505    o give MNC the ability to create additional files rather than
506      exceeding a specified file size limit "MNC_MAX_FILESIZE"
507      - the default is just less than 2GB which is a practical limit
508        on many systems
509    o Compute the non-local term using either KPP vertical diffusivity (=default)
510       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
511    
512    checkpoint55h_post
513    o add verification test "vermix"
514    o remove all the *_ioinc flags and replace with the single global
515      outputTypesInclusive flag
516    o allow to set a vertical profile of vertical diffusivity for T & S
517    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
518    o useMNC moved from data.mnc to data.pkg
519    
520    checkpoint55g_post
521    o Renaming carbon AD experiments to comply with testreport conventions
522    o Updating adjoint of Held-Suarez hs94.1x64x5
523    o Fixing directives for non-ECCO forward_step, after ECCO directives
524      have been fixed to avoid recomp. of do_oceanic_phys
525      Works well for global_ocean.90x40x15,
526      but recomp. issue remains for carbon
527    o Updating adjoint output for natl_box_adjoint after
528      pkg/ecco has been modified (see taga c55d_post)
529    
530    checkpoint55f_post
531    o rename to timeave_init_fixed
532    
533    checkpoint55e_post
534    o some delicate re-shuffle of store directives to avoid one
535      extra call of do_oceanic_physics
536      affects ecco_the_main_loop.F, do_oceanic_physics.F
537      checkpoint_lev1_directives.h
538    o NB: this may break global_ocean adjoint temporarily,
539      but it is clear how to fix it. Will do later, need this now.
540    
541    checkpoint55d_post
542    o ECCO specific cost function terms (up-to-date with 1x1 runs)
543    o ecco_cost_weights is modified to 1x1 runs
544    o modifs to allow observations to be read in as
545      single file or yearly files
546    o enable to read exf forcing fields as either
547      single file or yearly files (flag useExfYearlyFields)
548    checkpoint55d_pre
549    
550    o switch between 2-level and 3-level checkpointing
551    o add ability of MNC to write local and "partial" (eg. 2D slices where
552      the full 3D field is never actually stored) arrays to NetCDF files
553      with the correct (that is, the complete multi-dimensional) set of
554      array indicies
555      - used in mom_vecinv() to write the diagFreq output
556      - tested (demonstrated) in verification/aim.5l_cs
557    o further mnc-ification
558      - add verification/lab_sea to the list with mnc setups
559      - fix undefined mnc v-names in cd_code
560      - add kpp to mnc output (both snapshot and timeave)
561    o non-hydrostatic code
562      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
563        in calc_gw.F
564      - defaults to viscAh
565      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
566        friction or Leith) in non-hydrostatic mode, as long as there is
567        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
568    o pkg/cost
569      extend simple cost functions to treat time mean quantities
570      (T,U,V) via cost_accumulate_state from cost_tile
571    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
572        be 2 times larger than the minimum size the advection scheme requires.
573        now get a perfect conservation of salt in advect_cs test-exp (updated)
574    o GGL90 (Gaspar's TKE mixed layer)
575      - add horizontal diffusion of TKE, requires exchanges in
576        do_fields_blocking_exchanges, horizontal diffusivity is zero by
577        default. In OPA there is no horizontal diffusion of TKE but the
578        mixing coefficients are computed from a horizontal average of TKE of
579        6 points or so. I think that diffusion has a little more physical
580        justification.
581      - clean up ggl90_calc in the hope of reducing memory usage (this hope
582        was in vain)
583      - mask tke-variable in ggl90_init
584    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
585    o fix biharmonic diffusion on CS-grid.
586    o more obcs stuff
587      - added obcs_external_fields_load as an alternative to the EXF-pkg option
588        for reading boundary values. This routine is called from
589        obcs_prescribe_read
590      - updated obcs_check
591      - changed sponge layer relaxation parameter units for days to seconds
592      - turned off sponge layer by default
593      - changed argument list of OBCS_CALC to myTime+deltaTclock
594      - fixed about 35 bugs in obcs_external_fields_load
595    
596    checkpoint55c_post
597    o obcs stuff
598      - new runtime flags useOBCSprescribe, useOBCSbalance
599      - re-arranged obcs_calc
600      - moved exf_getobcs to obcs_prescibe_read
601        obcs_prescibe_read is called after ORLANSKI stuff
602        and independent of it (executable can contain all).
603      - updated obcs_check
604      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
605        These may be necessary only if tangential velocities are
606        prescribed at OB, not sure, needs testing.
607    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
608      which simplifies the calls and passes the ifc check-bounds test
609    
610    checkpoint55b_post
611    o add a 2D scalar, Z location, exchange_2 routine.
612    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
613      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
614      affects advect_cs results (for the wrong reason): update output.txt
615    o use a more standard discretization for biharmonic viscosity ;
616     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
617      affects results of dome set-up: update output.txt
618    o fix gad_advection.F (CubedSphere part), back to version 1.23
619    o fix bug in mom_vi_del2uv.F (CubedSphere part).
620    
621    checkpoint55a_post
622    o merged code to
623      * prescribe/read time-dependent open boundaries
624        (works in conjunction with exf, cal)
625      * sponge layer code for open boundaries
626      * each boundary N/S/E/W now has its own CPP option
627        (healthy for the adjoint)
628    
629    checkpoint55
630    o up-to-date adjoint of previous breaks
631      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
632      - global_ocean_ebm: adjoint still needs fix (TLM ok)
633      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
634      - carbon: * remove tr1-related adjoint verification
635                * add ptracer as control variable
636    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
637      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
638    
639    checkpoint54f_post
640    o in verification/carbin/ remove experiment related to
641      ALLOW_PASSIVE_TRACER (array tr1 etc)
642      code_ad/ input_ad/ results_ad
643    
644    o add two new packages
645      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
646        + subject to optimization (memory)
647      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
648        + subject to reordering (many GOTOs in the original code)
649        + so far opps is called for every (i,j) point, and then operates in
650          the vertical; one may want to reorder the scheme in order operate in
651          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
652          fields)
653    o overhaul of IO so that we now have flags for MDSIO and/or MNC
654      - all verification tests compile and run with linux_ia32_g77
655      - defaults are compatible with current input files--nothing
656        should change if you were not previously using MNC
657      - MNC output has been added in numerous places (eg. timeave)
658        but there are still a few writes not yet do-able with MNC
659        (this is in progress)
660      - flags now allow for either/or/both use of MDSIO and MNC and
661        documentation will soon follow
662      - numerous small formatting cleanups for ProTeX
663    o add version info (via BUILD_INFO.h) to MNC and stdout
664    
665    checkpoint54e_post
666    o add two new packages
667      - pp81 (Packanowski and Philander, 1981), Richardson number and
668        stratification dependent mixing
669      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
670      - these scheme operate in a similar manner as KPP (without ghat, of
671        course), however there is only one diffusivity that is used for both
672        temperature and salinity (and passive tracers)ç
673    o add offline package
674    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
675      provided by Stephanie Dutkiewicz
676    o genmake2: add ability to search for C compilers and cleanup test output
677      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
678    
679    checkpoint54d_post
680    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
681    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
682      leading to additional shift by 5 days each year of integration
683       (i.e. leading to considerable offset over the years)
684    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
685    o start with no AB and no initial filtering (staggerTimeStep):
686      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
687    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
688      (external loading & cpl import/export stay in forward_step.F)
689    o update coupling interface to work with new staggerTimeStep
690    o change MDSIO ptracers_pickup.
691    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
692    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
693    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
694    
695    checkpoint54c_post
696    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
697      this affects (truncation error) output.txt of test-exp:
698       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
699    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
700    o change Qnet to always be the net heat flux, (+upward).
701      affects (truncation error) output of natl_box exp.: updated
702    o define the max number of passive tracers in PTRACERS_SIZE.h
703    o start to test mnc routinely in exp0
704    o add sea-ice loading (sIceLoad) as a new forcing field.
705    
706    checkpoint54b_post
707    o add testreport "-j JOBS" option for parallel builds (tested and pretty
708       impressive on Altix and Opteron systems)
709    o diagnostics can now write NetCDF files through the mnc package
710    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
711    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
712    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
713      affects (truncation error) output of lab_sea & natl_box exp.: updated
714    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
715    
716    checkpoint54a_post
717    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
718    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
719    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
720    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
721      + internal_wave (shift in writing cg2d_ini_res)
722    checkpoint54a_pre
723    
724    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
725      - modified verification/lab_sea and natl_box_adjoint accordingly
726    
727    checkpoint54
728    checkpoint53g_post
729    o prepare splitting of thermodynamics: store convect.counter in common block
730    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
731      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
732    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
733    o new parameter "nShapS": allow to treat differently S from T (nShapT)
734    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
735    o restore adjointability
736    
737    checkpoint53f_post
738    o modifications that affect AIM experiment results (update output.txt):
739      - no advection of S at top interface Nr (pkg/generic_advdiff)
740      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
741    o AIM pkg:
742      - include stability function into surf.Flux derivative relative to Tsurf
743      - calculate clear-sky radiation & surface temp. change (for diagnostics)
744    
745    checkpoint53e_post
746    o merged cylindrical coord configuration
747    o added rotating_tank experiment
748    checkpoint53e_pre
749    
750    checkpoint53d_post
751    o faulks upgraded: re-generate output.txt that have changed:
752       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
753    o Added Bryan and Lewis, 1979, vertical diffusivity profile
754    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
755    o added Sadourny discretization of Coriolis
756      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
757      - re-enabled use of omega3 (useAbsVorticity)
758    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
759      vector-invariant equations
760      - note: does *NOT* yet use same variable visc. for no-slip BC's.
761    o recoded the lateral boundary conditions for non-hydrostatic w, this time
762      hopefully without new bugs
763      - still to do: biharmonic friction for non-hydrostatic w
764    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
765    o regenerated output for global_ocean_ebm (using -ieee)
766    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
767      of mom_common/
768      - simple re-arrangement of instructions within computing loop
769    checkpoint53d_pre
770    
771    checkpoint53c_post
772    o new version of coupler for AIM+thSIce and Ocean models
773     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
774     - land: change Evaporation of snow
775     - aim with thSIce: fix bug in snow-precip.
776    o changes to calc_gw.F
777     - bug fix for w^2 term near the bottom boundary
778     - (hopefully) improve the lateral slip boundary condtions for use with
779        partial/looped cells
780      - because the bug fix changes two verification experiments anyway (exp5
781        and plume on slope), change the lateral boundary condition from half slip
782        to the value of no_slip_sides
783    o ebm package wasnt quite up to the parallel task. Fixed that.
784    o Adjoint of EBM package + verification
785      * TLM OK
786      * ADM not sufficient accuracy yet (needs further testing)
787    
788    checkpoint53b_post
789    o Commiting new energy balance model to repository
790      * package is pkg/ebm
791      * verif. is verification/global_ocean_ebm
792      * references are in ebm_driver.F
793    C      * X. Wang, P. Stone and J. Marotzke, 1999:
794    C        Global thermohaline circulation. Part I:
795    C        Sensitivity to atmospheric moisture transport.
796    C        J. Climate 12(1), 71-82
797    C      * X. Wang, P. Stone and J. Marotzke, 1999:
798    C        Global thermohaline circulation. Part II:
799    C        Sensitivity with interactive transport.
800    C        J. Climate 12(1), 83-91
801    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
802    C        Destabilization of the thermohaline circulation
803    C        by atmospheric eddy transports.
804    C        J. Climate 7(12), 1870-1882
805    o Will need long integration testing.
806    checkpoint53b_pre
807    
808    o created pkg/mom_common in preparation for variable viscosity code
809    o renamed and split ini_mnc_io
810    o pkg/land: only liquid water can diffuse or run-off
811    o AIM using land: soil wetness availability account for snow
812    o added printMapIncludesZeros to EEPARMS namelist
813    
814    checkpoint53a_post
815    o restore TAMC compatiility for exf_constants.h
816      (no usage of _d in .h)
817    o Additional storing in KPP in an attempt to fix
818      TAMC problem with adjoint of KPP code.
819      (no success...)
820      Identical code works fine with TAF.
821    o Fixed verification/natl_box_adjoint experiments.
822      Initial conditions for Experiments 4 and 5 are now
823      set to "SEAICE_initialHEFF=0", which is more reasonable,
824      and hence gives results closer to that of Experiment 2.
825      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
826    
827    checkpoint53
828    o stable checkpoint with up to date adjoint
829      TLM tests only run for 1st grdchk at the moment. Its unclear if
830      this is a code problem or a problem with resetting code for g_
831      variables that is being autogenerated wrong.
832      Otherwise:
833       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
834       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
835         are both still in chaos following their security messes.
836    
837    checkpoint52n_post
838    o various build (mostly genmake2) changes including:
839      - ability to build/run more easily within Cygwin and MacOS X
840      - more complicated Makefiles with a stronger dependence on Gnu Make
841    o pkg/seaice modifications
842      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
843        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
844        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
845      - changed proxy for geostrophic velocity and updated
846        verification/lab_sea/results/* accordingly
847      - removed ADI dynamic solver from pkg/seaice
848      - replaced all occurrences of 1/CSTICE or 1/CSUICE
849        they caused a segmentation fault under certain circumstances
850      - removed unused field WATR
851    o bug fix in exf-package:
852      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
853         now reflect that.
854    o small fixes in the cal-package:
855      - set reference date to first of January for the 'model'-calendar
856      - failing of cal_CheckDate in cal_FullDate now actually results in a
857        warning
858    o small modifications in exf-package to increase flexibility:
859      - change climtempfreeze from a constant to a runtime parameter that
860        is specified in data.exf_clim (default = -1.9)
861      - introduce runtime parameter windstressmax (default = 2.0) that is
862        specified in data.exf
863    o fix in pkg/thsice:
864      - update Evap (Tsf changes) to be consistent with Latent heat flux
865      - maintain snow precipitation unchanged (even if Tsf >=0).
866     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
867    
868    checkpoint52m_post
869    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
870      this does not change any of the results, because myIter=0 in swfrac always
871      lead to jwtype=2 (the default anyway), but the call makes little sense
872      as a default
873    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
874    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
875      atmospheric model (AIM) to use it ; add a "slab ocean" component.
876    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
877    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
878    o extending useSingleCpuIO option to work with new exch2 I/O format
879      - old-style, missing-tile I/O is still accessible by defining CPP
880        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
881    o monitor package can write to NetCDF files and/or STDOUT
882    o fix re-definition bug in MNC_GRID_INIT_ALL()
883    o doc/api_reference added
884      - a framework for building an API Reference Manual using all
885        the "protex" comments embedded in the code
886      - see pkg/generic_advdiff, pkg/mnc for examples
887    o MNC:
888      - make myThid the last argument for all subroutines
889      - new default for the grid files: NO halos
890      - add useMNC and other run-time flags
891      - separate per-file-group handling of the unlimited dimension
892      - early initialization of MNC w/ flags read at the eeboot stage
893        and lookup tables set in initialize_fixed
894      - write all MNC output to a freshly-created directory
895    o thermodynamics sea-ice (thsice) is now tested with testreport.
896    o test exp. advect_cs: use the standard cs32 grid ; update output.
897    o Added functionality to grdchk:
898      pick global i,j,k position (or nearest wet) where to perform check.
899    
900    checkpoint52l_post
901    o new land formulation:
902      a) use ground enthalpy as prognostic variable to ensure exact
903         energy conservation.
904      b) account for water temperature and for latent heat of freezing
905         in all processes (rain, run-off, ground storage)
906      c) compute surface and ground temperature implicitly.
907    o aim_v23 modification for new land model:
908      a) Treat separately land / ocean / sea-ice surface fluxes
909         to allow implicit computation of land & sea-ice surface temp.
910      b) add snow precipitation.
911    checkpoint52l_pre
912    
913    o fix problem (when 1 tile is empty) in min/max monitor.
914    o fix bug in timeAve (u,vZetatave in common block)
915    o no restoring terms under ice for pkg/seaice
916    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
917    o bug fix for pkg/seaice pickups
918    o change MNC call locations and add coordinate attributes
919    o mask vorticity at the corner ; affects global_ocean.cs output
920    o fix ini_curvilinear_grid ; test CS experiments with mpi
921    o aim.5l_cs: modify sea-ice fraction input file ; update output
922    o exf: Adding simple range check routine for exf fields after read
923    
924    checkpoint52k_post
925    o removed top-level directory "diags"
926      - we migrated these functions to pkg/timeave a long time ago
927    o fixed bug introduced in pkg/monitor
928    o accuracy ctrlprec = 32 insuffient for gradient checks using
929      averaged fields (I/O via cost_averages)
930      -> use ctrl.h in active_file*.F to control I/O precision.
931    o paramter list of CALL ADTHE_MAIN_LOOP
932    o added initial do_the_model_io to ecco
933    o set all ...Freq to zero after cost_final
934      taveFreq, dumpFreq, pChkptFreq
935    o MAIN and ECCO differentiability restored
936    
937    checkpoint52j_post
938    o fix nchklev in tamc.h for global_ocean...
939    o Bringing flow and store directives up-to-date
940    o Really weird thing!
941      call do_the_model_io from the_main_loop with parameters
942      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
943      TAF places a faulty re-call of initialise_varia
944      after cost_final call which should not be there!
945    checkpoint52j_pre
946    
947    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
948      error messages
949    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
950    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
951      debug output
952    o modfied mdsio_writefield.F to handle non-global files under exch2
953    o update AIM Cubed-Sphere exp (aim.5l_cs):
954      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
955    o update AIM Equatorial Channel exp:
956      use standard aim_v23 pkg and change the SST fields to be more realistic.
957    o globalFile now works with exch2
958    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
959      mon_vort3.F to make exch2 friendly with >1 tile per cube face
960    o limit timeave output for hi-res integrations
961    
962    checkpoint52i_post
963    o removed CPP_EEOPTIONS.h from verification/*/code
964    o updated the tiling for global_ocean_pressure
965    checkpoint52i_pre
966    
967    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
968      the old pkg/aim).
969    
970    checkpoint52h_pre
971    o shortened offending lines in exch2_send_rx?.template
972    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
973    o genmake2: add build & execute test for NetCDF code
974    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
975      old grid files, moved CPP_EEMACROS.h to pkg/exch2
976    o added useSingleCPUIO flag to monitor.F and mon_out.F
977    o added temporary hack for sea-ice dynamics on the cube:
978      metric terms are ignored and it is assumed that
979      there is no sea-ice on cube faces 1, 2, 4, and 5.
980    
981    checkpoint52f_post
982    o added exch2 cube routines to pkg/exch2
983    o modified hs94.cs-32x32x5 to use it
984    o added new grid files to hs94.cs-32x32x5
985    checkpoint52f_pre
986    
987    checkpoint52e_post
988    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
989      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
990    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
991      to work with implicit vertical advection and AB ;
992    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
993    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
994     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
995    checkpoint52e_pre
996    
997    o fix bug in impldiff when Nr=1 or Nr=2.
998    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
999    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1000    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1001      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1002    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1003    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1004    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1005    
1006    checkpoint52d_post
1007    o re-tiled many expts to allow comparison in multi-processor mode
1008      - updated output accordingly
1009      - changed hs94.128x64x5 to use intial T from file rather than use the
1010        random number generator
1011    o add infrastructure in model routines for fizhi and gridalt packages
1012    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1013    o changes to permit hi-res, cubed-sphere, configuration
1014      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1015      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1016      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1017        of surface winds for the cube
1018      (A verification experiment, based on global_ocean.cs32x15, but with
1019       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1020       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1021       complete with example surface forcing files and matlab scripts to look
1022       at the output and compare it with that of global_ocean.cs32x15.)
1023    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1024       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1025       to conform to the common rule.
1026    o check-in the first version of the coupler + interfaces for multi-components
1027       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1028       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1029       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1030       - ocean and atmos. share the same horizontal grid (no interpolation).
1031       - exchanges between component and coupler is done in forward_step
1032    o new verification experiment, cpl_aim+ocn:
1033       coupled ocean - AIM atmosphere on cs32 grid.
1034    
1035    checkpoint52d_pre
1036    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1037    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1038    
1039    checkpoint52c_post
1040    o Fixing OPTIONS files for use of exf:
1041      - ALLOW_ECCO not needed
1042      - ECCO_CPPOPTIONS.h should not be included from
1043        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1044        as has been the case in the past
1045      - All cal/exf related options are currently set in
1046        single header file. Should remain so until we
1047        agree on a consistent new policy.
1048    o Removed all CPP options for cal package.
1049      cal has no more CPP options.
1050    o modified STOREs in GAD_ADVECTION
1051    o corrected key comp. for passkey
1052    
1053    checkpoint52b_post
1054    o new version: "thsice" of thermodynamic sea-ice pkg:
1055     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1056     - modify fluxes but do not change theta directly;
1057     - light cleaning of bulk_force pkg (still needed with thsice).
1058     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1059       + output_thsice.txt to test thsice & bulk_force pkgs.
1060    o put back grid & coriolis monitor output.
1061    checkpoint52b_pre
1062    
1063    o call "do_the_model_io" at the beginning (=> dump initial state)
1064    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1065    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1066      (need info on NUMBER_OF_PTRACERS)
1067    o missing PTRACERS headers in some routines
1068    o default tamc.h in pkg/autodiff supposed to crash
1069      to ensure proper customization
1070    
1071    checkpoint52a_post
1072    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1073      - moved surfaceTendencyTice from pkg/seaice to main code
1074      - subroutine FREEZE_SURFACE now limits only surface temperature
1075        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1076        => new output.txt for global_ocean.cs32x15 & global_with_exf
1077      - keep the old version of FREEZE for backward compatibility;
1078        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1079      - corresponding modifs for TAF directives
1080    o added surface flux output variables to TIMEAVE_STATVARS
1081    o time-averaged output for pkg/ptracers
1082    o fix problem with ECCO-related divided adjoint
1083      snapshot file was missing some ad-variables,
1084      but no warning issued by TAF
1085    
1086    checkpoint52a_pre
1087    o some bug fixes for #undef REAL4_IS_SLOW
1088    
1089    checkpoint52 = ecco_c52_e35
1090    o after testing adjoints of checkpoint51u_post
1091    
1092    checkpoint51u_post
1093    o this is the post-merge tag of the ecco-branch
1094      (needs another clean checkout and re-testing)
1095    o various natl_box_adjoint configs and results
1096      but no input fields
1097    o obcs adjoint not yet merged!
1098    o adding ECCO global 1x1 and 2x2 degree configs
1099    o updated/extended some store directives for seaice
1100    o pkg/ecco now containes ecco-specific part of cost function
1101    o top level routines the_main_loop, forward_step
1102      supersede those in model/src/
1103      previous input data.cost now in data.ecco
1104      (new namelist ecco_cost_nml)
1105    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1106    
1107    checkpoint51t_post
1108    o this is the pre-merge tag of the ecco-branch
1109    
1110    checkpoint51s_post
1111    o cleanup: removed various obsolete #define-s
1112    o pkg/grdchk
1113      - renamed 'ph-grd 3' to 'grad-res'
1114      - merged from ecco-branch
1115        (remaining bug fixes for obcs gradient checks)
1116      - additional high-precision output for testreport
1117        (grep for 'precision_grdchk_result')
1118    
1119    checkpoint51r_post
1120    o cleaned up or removed CPP_OPTIONS.h files
1121    o updated results for some of the tests to reflect the new
1122      optfiles (-ieee: -O0 instead of -O3)
1123    
1124    checkpoint51q_post
1125    o cd_code:
1126      - moved cd_scheme.F -> cd_code_scheme.F
1127      - separate read_checkpoint from cd_code_ini_vars.F
1128      - separated cd_code part from write_checkpoint
1129      - updated AD_SOURCE, generated .flow
1130      - added CD_CODE_VARS.h to the_main_loop
1131      - Moving cd_code specific store dir.s to pkg/cd_code
1132    o ctrl package totally restructured
1133      - pack/unpack now optional and decoupled from
1134        xx_/adxx_ I/O
1135      - ctrl_pack/unpack cleaned
1136        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1137      - confined inclusion of AD_CONFIG.h to where necessary.
1138    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1139    
1140    checkpoint51p_post
1141    o create initial cd_code package
1142      - WARNING: the initialization of fields within packages
1143        is broken because INI_FIELDS (where READ_CHECKPOINT is
1144        called) is called *before* PACKAGES_INIT_VARIABLES.
1145        This seems to be backwards since
1146        1) its important to initially zero the entire field including
1147           the "halo" region
1148        2) zeroing needs to be done *before* reading pickup info
1149           and the pickup call might or might not happen in any
1150           particular run
1151      - this needs an overhaul for R2
1152    o cleanup verification/*/code/GMREDI_OPTIONS.h
1153    o cleanup testreport
1154    
1155    checkpoint51o_post
1156    o bringing AD-related verif's up to date with genmake2
1157      - carbon/
1158      - global_ocean.90x40x15/
1159      - hs.94.1x64x5/
1160      - (front_relax/ )
1161    o (more) consistent directory structure for AD-related verif.'s
1162    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1163    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1164    o bug fix in find_alpha.F for MDJWF:
1165      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1166        change rho -> rho-rhoConst
1167      - replace call find_rho to find_rhonum
1168    o initialisation of rFlx extended to full array (required by TAF)
1169      and shifted to thermodynamics
1170    o removed PTRACERS.h in ptracers routine
1171    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1172    o Correcting initialisations for fVerU, fVerV.
1173    o helping TAF to recognize dependency on kUp for
1174      fVerU, fVerV
1175    o Replacing delZ by delR in pkg/ctrl/
1176    checkpoint51o_pre
1177    
1178    o undid all of cp51 pending some cleanups and discussion
1179    o added the [#include "AD_CONFIG.h"] statement to all files that need
1180       it for adjoint/tl #defines
1181     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1182     o removed tools/genmake since it no longer works
1183    
1184    checkpoint51n_post
1185    o modifications to make FREEZE flux visible to pkg/kpp
1186      - moved surfaceTendencyTice from pkg/seaice to main code
1187      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1188      - subroutine FREEZE now limits only surface temperature
1189        (this means new output.txt for global_ocean.90x40x15,
1190         global_ocean.cs32x15, and global_with_exf)
1191    o added surface flux output variables to TIMEAVE_STATVARS
1192    
1193    checkpoint51n_pre
1194    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1195    o added [#include "AD_CONFIG.h"] to all files that use the following
1196      defines:
1197      - ALLOW_ADJOINT_RUN
1198      - ALLOW_TANGENTLINEAR_RUN
1199      - ALLOW_ECCO_OPTIMIZATION
1200    
1201    checkpoint51m_post
1202    o incorporating changes to get TAMC/TAF working in genmake2
1203      - added new TAMC/TAF targets to the Makefile
1204      - various cleanups related to package handling
1205      - these changes should have no impact on the forward model
1206    
1207    checkpoint51l_post
1208    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1209     - faster algorithm for cal_addtime.F
1210     - higher precision arithmetic, where needed
1211     - pkg/exf *startdate variables changed from calendar date to
1212       model integration time
1213    
1214    checkpoint51l_pre
1215    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1216    o enable to apply restoring on S & T only in a latitude band.
1217    o update output (external_forcing_surf modif. change truncation errors)
1218       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1219    
1220    checkpoint51k_post
1221    o change default to: useNHMTerms=.FALSE.
1222     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1223       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1224     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1225        exp1, ideal_2D_oce
1226     - change data file of oceanic exp (leave the results unchanged for now)
1227       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1228    o set gravitySign automatically according to the vertical coordinate used
1229      (and change sign: back to "logical" value: +1 when R increases downward)
1230    o added an include barrier to the default CPP_OPTIONS.h and
1231      removed the #include "PACKAGES_CONFIG.h" from it
1232    o fix a bug in mom_fluxform (from chk51j_post)
1233    
1234    checkpoint51j_post
1235    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1236    o adjusted some flow directives (dynamics, thermodynamics)
1237    o added cubed-sphere case to test cost function
1238    o heckpoint_lev?_directives.h now include
1239      pkg-specific directives, whenever those are enabled.
1240    o Moving pkg-specific flow directives to corresponding pkg
1241      Moving pkg-specific differentiation list to corresponding pkg
1242      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1243      ---> conventions are
1244           - pkg_ad.flow
1245           - pkg_ad_diff.list
1246           - pkg_ad_check_lev?_dir.h
1247    
1248    checkpoint51i_post
1249    o merge of the branch-genmake2
1250      - knowingly breaks the older genmake
1251      - automatic generation of all ALLOW_${PKG_NAME} defines
1252      - new testreport supersedes older testscript
1253    o large number of package inclusion and header cleanups
1254    checkpoint51i_pre
1255    
1256    o new output for adjoin of global ocean vector invariant
1257    o fix for checkpoint of thermodynamic seaice and bulk_force
1258    o Steph gchem various cleanups
1259    
1260    checkpoint 51h_pre
1261    o fixed some single quotes
1262    o modify gchem pkg to be more versatile
1263    o modifications to clean up dic pkg
1264    o add pkg/cfc
1265    
1266    checkpoint51g_post
1267    o provide links for ARPACK and ADM*TLM
1268    o start removing verification/vero/
1269    o update AD-related stuff
1270      (in particular some IF-statements in model/src/ routines)
1271    o adding to verification/global_ocean.90x40x15/ adjoint of
1272      vector invariant setup
1273    
1274    checkpoint51f_post
1275    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1276    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1277      of tracer Green's fucntions for ocean inversion project.
1278    
1279    checkpoint51f_pre
1280    o Added on-the-fly spatial interpolation capability
1281        "USE_EXF_INTERPOLATION" to pkg/exf.
1282      - This is a temporary Cartesian-grid hack until
1283        the super-duper ESMF coupler becomes available.
1284      - See verification/global_with_exf/README for usage example.
1285      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1286        flags and modified pkg/seaice accordingly.
1287    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1288        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1289        non-local transport term.
1290    
1291    checkpoint51e_post
1292    o pkg/mom_vecinv:
1293      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1294      - add time-ave diagnostic of vorticity advection.
1295    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1296    o atmospheric geopotential: - include water vapor effect;
1297                                - use p^kappa in p* scaling.
1298    o land pkg: read initial state from files.
1299    o AIM : add stratospheric drag in the upper level
1300    
1301    checkpoint51d_post
1302    o change function ILNBLNK (=> last non-blank char.) to return zero
1303      (instead of the string length) when the string. char is empty
1304    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1305    o modif's to restore TAMC compatibility
1306      - avoid "_d" constructs in PARAMETER declarations
1307      - avoid interrupting lines by comment lines
1308    o Use cluster local disks for purely local I/O
1309      vs. globally visible disks needed for ctrl stuff
1310      (merged from ecco-branch)
1311      - new active_file_loc... and mdsio_..._loc routines
1312      - affected packages: autodiff, ctrl, grdchk, mdsio
1313    
1314    checkpoint51c_post
1315    o introducing integer flag debugLevel
1316      - debLevZero: suppress all output
1317      - debLevA: standard
1318      - debLevB: equivalent to current debugMode=.TRUE.
1319    o introducing pathname variable mdsioLocalDir for mdsio
1320      that can be specified at runtime
1321      (relevant for cluster I/O to local disk)
1322    `
1323    >>>checkpoint51b_post
1324    adjoint of ptracers
1325    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1326    o extended state in checkpoint_lev?, etc.
1327    o alternative ctrl/cost with tr1 or ptracer
1328    o new comlev1_bibj_ptracers
1329    o new ptracers.flow
1330    o made ptracers_forcing same as external_forcing_s
1331    o added verification for adjoint with ptracers
1332      - adm. grdchk fail so far
1333      - tlm. grdchk OK
1334      - checked tapelev/comlev recomputations: OK
1335    <<<checkpoint51b_pre
1336    
1337    checkpoint51a_post
1338    o added code for biogeochemistry package
1339      - new pkgs: dic, gchem
1340      - new subroutine in ptracers
1341    o modify code for biogeo packages
1342      - in model/src and pkg/ptracers
1343    
1344    checkpoint51
1345    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1346      - autodiff, ctrl, exf, grdchk, seaice
1347      kept separate packages
1348      - cost, ecco, obcs
1349    o updating verification/internal_wave, verification/lab_sea
1350      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1351    
1352    checkpoint50i_post
1353    o Preparing next differentiable checkpoint and sync
1354      of MAIN vs. ecco-branch
1355      - 1st step: this one is differentiable
1356      - 2nd step: next(! not this) checkpoint will have updated packages
1357                  from ecco-branch)
1358    
1359    checkpoint50h_post
1360    o new package "land": provide surface BC for AIM.
1361    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1362    o AIM: use true log-P extrapolation for near surface temp (= as in
1363        F.Molteni paper) ; update aim.5l_cs output.
1364    o New variable in PARM03 for more flexible pickups
1365    o somewhat cleaned package initialisation sequence for
1366      ctrl/ cost/ ecco/ in packages_... routines
1367    
1368    checkpoint50g_post
1369    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1370      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1371      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1372        made the default because of faster convergence than ADI
1373    
1374    checkpoint50f_post
1375    o exf totally restructured
1376      - replaced all exf_set_ routines by one generic exf_set_gen.F
1377        and made sure it's still differentiable
1378      - split exf_getffields.F into new exf_bulkformulae.F
1379      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1380      - updated adjoint/makefile and relevant verif. accordingly
1381    
1382    checkpoint50f_pre
1383     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1384          + change Evap over land. (update aim.5l_cs output)
1385     o added missing .cvsignores and made uniform across expts
1386     o changed configuration of tidal_basin_2d expt
1387     o added pkg/debug functions for tracing code in fatal crashes
1388     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1389     o new fn in pkg/monitor to stop model if solution grows too big
1390     o removed lots of single quotes from comments
1391    
1392    checkpoint50e_post
1393    o make KPP work with PTRACERS
1394     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1395       nearly a copy of kpp_transport_s
1396     - there is no analogue to SurfaceTendencyS, so I have to use
1397       gPtr(of the surface layer) instead
1398    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1399    checkpoint50e_pre
1400    
1401    checkpoint50d_post
1402    o change kpp output from multiple-record state files to single-record state
1403      files analogous to write_state.F
1404    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1405      analogous to the cg2d-related output.
1406    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1407      so that writing to internal file fn (with length 512) fails.
1408    checkpoint50d_pre
1409    
1410    checkpoint50c_post
1411    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1412    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1413    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1414    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1415    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1416    
1417    checkpoint50c_pre
1418    Merging from release1_p13:
1419    o bug fix for pkg/seaice dynamic solver
1420    o Added SEAICE_initialHEFF to pkg/seaice
1421    
1422    checkpoint50b_post
1423    o store u*,v* in gU,V instead of in guNm1,gvNm1
1424    o in order to put the momForcing out of the Adams-Bashforth:
1425      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1426      to timestep.F
1427    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1428    o re-generate output for highly sensitive test-exp:
1429       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1430    
1431    checkpoint50b_pre
1432    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1433    o corrected CPP option mismatch in exf_Bulk... functions for case
1434      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1435    
1436    checkpoint50a_post
1437    o Bug fix for merging between c50 and KPP.
1438      ikey was passed from thermodynamics to kpp_calc via
1439      common block rather than being recomputed in kpp_calc,
1440      in contradiction with new key itdkey.
1441      New key ikppkey created, and tamc.h headers updated.
1442    
1443    checkpoint50
1444    - 2nd step of merge with ecco-branch:
1445      merge changes in ecco-branch back into main trunk
1446    - bug fix in find_alpha
1447    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1448    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1449    - merged some sliced AD support routines
1450    
1451    checkpoint49
1452    merged from ecco-branch:
1453    o exf:
1454      - Enable initialisation of forcing fields to constant
1455        (runtime) values.
1456      - in exf_getffields.F
1457        Reduce i-/j-loop to interior domain, discarding overlaps.
1458        That also fixes wrong TAF-key computations for key_1, key_2
1459        with bulf formulae.
1460      - exf_init.F modify #ifdef for exf_init_evap
1461      - exf_getffieldrec.F, ctrl_getrec.F
1462        The following INT-usages are not safe:
1463          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1464          fldcount = int(fldsecs/fldperiod) + 1
1465        and were modified.
1466    o autodiff: checkpoint_lev...
1467      - updated storing for bulk formulae (some arrays were missing)
1468      - added state for seaice package
1469      - synchronized with main branch
1470    o DIVA:
1471      Modif.s in
1472      - the_main_loop.F
1473      - the_model_main.F
1474      and added cost_final_restore.F cost_final_store.F
1475      o With these changes, it is possible to fully separate
1476        the first forward run to compute the cost function (mdthe_main_loop)
1477        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1478        into separate model executions.
1479        This enables better tuning of DIVA to given queue sizes.
1480      o Loss of cost function value in consecutive DIVA runs is
1481        fixed by storing to 'costfinal' file.
1482      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1483        beginning/end of adjoint integration is accounted for.
1484      The current changes apply to TAF-1.4.26.
1485      TAF has one remaining bug, requiring one manual change
1486      (see MITgcm manual).
1487    o cal: synchronized between MAIN and ecco-branch
1488    
1489    checkpoint48i_post
1490    o Changes to restore differentiability of code w.r.t. previous tag
1491      (mostly adding new routines to make list and replacing
1492      pressure by totPhiHyd).
1493    o Updated and merged grdchk package
1494      - has both ADM and TLM checks
1495      - works for single- and multi-proc.
1496      - output cleaned
1497      - worked successfully for parallel DIVA
1498    o genmake:
1499      - Adding -platform=SP4
1500      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1501    o Modif. for DIVA:
1502      ctrl_unpack should not be called in intermediate DIVA interval.
1503      (similar thing would apply for active files such as
1504      tbar, sbar, psbar, which should not be reinitialised;
1505      only relevant for ecco-branch)
1506    
1507    checkpoint48h_post
1508    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1509    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1510    o Added SEAICE_initialHEFF to pkg/seaice
1511    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1512    
1513    checkpoint48g_post
1514    --- EOS:
1515    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1516      store total Potential in totPhyHyd for diagnostics & EOS.
1517    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1518    --- Pressure/geopotential gradient:
1519    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1520    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1521      ( changes results of global_ocean_pressure )
1522    o NLFS + z-coord.: add eta*Rho' contribution.
1523    o accurate phiHyd when using interface-W at the middle between 2 centers
1524     ( changes results of ideal_2D_oce )
1525    o includes r* 2nd term in potential gradient.
1526    
1527    checkpoint48f_post
1528    Merging from release1_p12:
1529    o Modifications for using pkg/exf with pkg/seaice
1530      - improved description of the various forcing configurations
1531      - added basic radiation bulk formulae to pkg/exf
1532      - units/sign fix for evap computation in exf_getffields.F
1533      - updated verification/global_with_exf/results/output.txt
1534    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1535      (SBO) core products, including oceanic mass, center-of-mass,
1536      angular, and bottom pressure (see pkg/sbo/README.sbo).
1537    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1538      to avoid negative values in shallow regions.
1539      - updated verification/natl_box/results/output.txt
1540      - updated verification/lab_sea/results/output.txt
1541    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1542    o Added useSingleCpuIO option (see PARAMS.h).
1543    o Updated useSingleCpuIO option in mdsio_writefield.F to
1544      work with multi-field files, e.g., for single-file pickup.
1545    o pkg/seaice:
1546      - bug fix in growth.F: QNET for no shortwave case
1547      - added HeffFile for specifying initial sea-ice thickness
1548      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1549    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1550      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1551    o pkg/seaice:
1552      - adjoint-friendly modifications
1553      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1554    
1555    checkpoint48e_post
1556    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1557    o dynamics: change definition of computational domain & adapt mom_fluxform
1558      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1559    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1560        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1561        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1562        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1563        inverted_barometer solid-body.cs-32x32x1
1564      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1565    
1566    checkpoint48d_post
1567    o in preparation for r*:
1568     a) use pre-computed gradient of hydrostatic potential:
1569        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1570     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1571        => affects results of glob_oce_pressure (different truncation error)  
1572      update output.txt of ideal_2D_oce & global_ocean_pressure
1573    
1574    checkpoint48d_pre
1575    o in preparation for r*:
1576      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1577      pass the 2 comp. of the grad. as arguments to momentum S/R.
1578      but for the moment, only used if it does not change the results.
1579    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1580    
1581    checkpoint48c_post
1582    Modifications in treatment of initial flux forcing controls
1583    to avoid extra storing of flux fields.
1584    
1585    checkpoint48c_pre
1586    o Added tidal_basin_2d experiment (currently 1D!)
1587    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1588    
1589    checkpoint48b_post
1590    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1591     (modification to pressure gradient not yet implemented)
1592    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1593      (for U & V) that are used for vertical advection of momentum.
1594    
1595    checkpoint48a_post
1596    o In preparation for r*, use temp. array to compute vertical transport
1597       in flux-form momentum pkg. => change results of few test-exp.
1598      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1599                        lab_sea, natl_box & plume_on_slope
1600    
1601    checkpoint48
1602    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1603    
1604    checkpoint47j_post
1605    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1606    o moved adexch from forward_step to addummy_in_stepping
1607    o added exch in ctrl_map_...
1608    o aveFreq.=0. at end of cost_final to avoid overwrite in
1609      reverse checkpointing loop
1610    o Yet more changes in gmredi:
1611      * adgmredi_calc_tensor
1612        avoiding all recomputation of gmredi_slope_limit
1613      * adgmredi_x/y/rtransport
1614        added flag for excessive storing to avoid recomp. of
1615        u/v/rtans, dTdx/y/z
1616        -> this is not really necessary and very memory-consuming
1617      * adgmredi_slope_psi:
1618        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1619      * gmredi_slope_limit
1620        re-activated full calculation of taperfct for case 'ac02'
1621    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1622    
1623    checkpoint47i_post
1624    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1625    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1626      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1627    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1628    o gmredi: fix few bugs.
1629    
1630    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1631    This will be a good checkpoint to plug into the ecco-branch.
1632    o few modif.'s to get latest version adjointed
1633      (mainly kick out code in ini_linear_phisurf)
1634    o modif's to run adjoint with exactConserv
1635    o case GM_BOLUS_ADVEC should be cleaned
1636      S/R gmredi_slope_psi should be cleaned
1637    o verification/carbon now has exactConserv=.TRUE.
1638    
1639    checkpoint47g_post
1640    o time-average AIM output: becomes independent from statvars time-average
1641      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1642    o After TAF bug fix:
1643      Tested adjoint of gmredi package.
1644      Tests were done with checkpoint47 rather than with latest
1645      checkpoint47f_post since the latter is broken for the adjoint
1646      verification/carbon/ contains both ADM and TLM gradient checks.
1647    Here they are, before they get changed/lost/stolen.
1648    Mostly modif.'s to fix numerical sensitivities.
1649    Gradient checks OK for
1650    - GM_taper_scheme:
1651      * clipping
1652      * ac02
1653      * linear
1654      * glw91
1655      * dm95
1656      * ldd97
1657    - GMREDI_OPTIONS:
1658      * GM_VISBECK_VARIABLE_K
1659      * GM_NON_UNITY_DIAGONAL
1660      * GM_EXTRA_DIAGONAL
1661      * GM_BOLUS_ADVEC
1662    in conjunction with data.gmredi parameters to be checked in
1663    in a few minutes under verification/carbon/code/
1664    
1665    checkpoint47f_post
1666    Merging from release1_p10:
1667    o modifications for using pkg/exf with pkg/seaice
1668      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1669        and SEAICE_EXTERNAL_FLUXES
1670      - pkg/exf CPP options EXF_READ_EVAP and
1671        EXF_NO_BULK_COMPUTATIONS
1672      - usage examples are Experiments 8 and 9 in
1673        verification/lab_sea/README
1674      - verification/lab_sea default experiment now uses
1675        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1676    
1677    checkpoint47e_post
1678    o created a tag prior to creating a branch
1679    
1680    checkpoint47d_post
1681    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1682      at the bottom boundary had an erroneous half slip boundary condition
1683    o added bottom drag and no slip boundary condition capabilities to
1684      oceanic pressure coordinates code
1685    o added new verification experiment global_ocean_pressure, this experiment is
1686      also described in the tutorial section of the manual
1687    checkpoint47d_pre
1688    
1689    checkpoint47c_post
1690    o Added a verification experiment for a global cubed-sphere ocean run
1691      -  verification/global_ocean.cubed32x32x30
1692      -  uses pkg/therm_seaice and pkg/bulk_forcing
1693    
1694    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1695    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1696      when using P-coordinate; only implemented for atmospheric config.
1697    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1698      NOTES: requires option NONLIN_FRSURF to be "#define".
1699    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1700    
1701    checkpoint47b_post
1702    Merging from release1_p9:
1703    o pkg/seaice
1704      - removed GOTO's and added taf directives
1705      - double precision constants to reduce the g77 (Linux)
1706        to F77 (SGI) differences reported in release1_p8
1707    o tools/genmake
1708      - added SGI options
1709    o verification/testscript
1710      - updated to that of checkpoint47a_post
1711    o verification/global_ocean.90x40x15/input/eedata
1712      - modified for SGI f77 compatibility
1713    o verification/lab_sea
1714      - added description of sea-ice model
1715      - added missing matlab routines
1716      - added test of thermodynamics parallelization
1717    
1718    checkpoint47a_post
1719    o new pkg: aim_v23
1720     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1721       for now, keep the same surface forcing as before.
1722     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1723     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1724     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1725    o add diagnostic of surface correction term in monitor output
1726    
1727    o bulk_force and therm_seaice
1728    - Two packages:  bulk_force (Bulk forcing)
1729      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1730    - Earlier integration from Stephaine Dutkiewicz
1731      and Patrick Heimbach.
1732    - Two ifdef statements for compile time,
1733       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1734    
1735    checkpoint47
1736    differentiable version of checkpoint46n_post
1737    o bug fix in quasihydrostaticterms
1738    o * "clean" adjoint code (in terms of extensive recomputations)
1739        can now be obtained for all GMREDI options (i.e. for
1740        - GM_VISBECK_VARIABLE_K
1741        - GM_NON_UNITY_DIAGONAL
1742        - GM_EXTRA_DIAGONAL
1743        - GM_BOLUS_ADVEC )
1744      * However, wrong gradient check problem remains unsolved.
1745      * New CPP options have been introduced for different
1746        tapering schemes
1747    o external_fields_load now part of differentiation list
1748    o pressure needs multiple storing;
1749      would be nice to have store_pressure at beginning or
1750      end of forward_step, e.g. by having phiHyd global (5-dim.)
1751      (NB: pressure is needed for certain cases in find_rho,
1752      which is also invoked through convective_adjustment).
1753    o recomputations in find_rho for cases
1754     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1755    o #define ATMOSPHERIC_LOADING should be differentiable
1756    o ini_forcing shifted to begining of initialise_varia
1757    o Incorporating QNVS line search routines into MITgcm
1758      (this is separate code, and therefore not under pkg)
1759      lsopt/, optim/
1760    o Updated verification/carbon/
1761      - #define GM_VISBECK_VARIABLE_K
1762      - GM_taper_scheme    = 'ldd97'    
1763    
1764    checkpoint46n_post
1765    Merging from release1_p8:
1766    o verification/natl_box:
1767      updating new external_fields_load routine
1768    o New package: pkg/seaice
1769      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1770      The sea-ice code is based on Hibler (1979-1980).
1771      Two sea-ice dynamic solvers, ADI and LSR, are included.
1772      In addition to computing prognostic sea-ice variables and diagnosing
1773      the forcing/external data fields that drive the ocean model,
1774      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1775      The implied surface heat flux is then stored in variable
1776      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1777      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1778      non-local transport term.  Because this call precedes model
1779      thermodynamics, temperature under sea-ice may not be "exactly" at
1780      the freezing point by the time theta is dumped or time-averaged.
1781      N.B.: fairly large differences in accuracy occur across
1782            different platforms/compilers; comparison between
1783            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1784            generated output gives:
1785       T           S           U           V
1786      C D M    c        m  s        m  s        m  s        m  s
1787      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1788      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1789      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1790    
1791      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1792    o GAD:
1793      - generated new common blocks to account for call of
1794        same gad routines with differing traceridentities
1795        (needed to modify tracerIdentity indices in GAD.h)
1796      - generated separate common blocks for case useCubedSphereExchange
1797        (Department of Futurology)
1798      - parameter lists to gmredi_?transport: added tracerIdentity
1799      - added new key indices to tamc.h
1800    o external_fields_load:
1801      - added this routine to TAF list
1802      - needed to make some common blocks global and additional storing
1803        along the same lines as exf package (checkpoint_lev?_directives.h)
1804    o exf:
1805      updated external forcing package
1806      - bug fixes carried over from ecco-branch
1807        (missing OBCS_OPTIONS.h in two routines)
1808      - enable easy to use "no forcing".
1809      - added exf I/O for atmospheric loading
1810      - added exf I/O for runoff data
1811      - transfered scaling between exf <-> MITgcm to exf namelist
1812    o Adding new verification experiment global_with_exf.
1813      This verification experiment is almost identical to the
1814      global_ocean.90x40x15 experiment, except that it uses
1815      the exf (and cal) package instead of the
1816      external_fields_load routine (cf README file).
1817    
1818    checkpoint46m_post
1819    o modified testscript to return -- when there are no lines of "%MON" output
1820    o added new flag "quasiHydrostatic" for QH mode
1821      and new routine quasihydrostaticterms()
1822    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1823      New routine: mom_u_coriolis_nh()
1824    o fixed sign of non-hydrostatic metric terms in u and v equations.
1825      Depend on correct sign of gravitySign.
1826    o added work.pc* to .cvsignore in aim directories using ifc
1827    o introduced flag for controllin non-hydrostatic metric terms
1828    o removed gravitySign from PARM04
1829    o switched to g77/ifc from pgf77 in aim experiments
1830    
1831    checkpoint46l_post
1832    o made convective adjustment work with pressure coordinates:
1833     - changed the direction of k-loop in convective_adjustment.F for the
1834       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1835     - adjusted the reference pressure k-index in convective_adjustment.F
1836     - adjusted the convection condition in convect.F (in analogy to
1837       calc_ivdc.F)
1838     - convective_adjustment no longer computes anything on the halos
1839     - removed the warnings about negative salinity from find_rho.F and
1840       find_alpha.F; instead the new routine look_for_neg_salinity, called
1841       at the beginning of find_rho, find_alpha, and find_beta, does a
1842       check of the entire slice, if CPP-option
1843       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1844    checkpoint46l_pre
1845    
1846    checkpoint46k_post
1847    o fixed the verification/global_ocean.90x40x15 experiment:
1848     - new bathymetry (the world according to A., JMC, and M.)
1849     - new initial fields and forcing fields (*.bin files)
1850     - new POLY3.COEFFS (for the next release one should switch to a full
1851       equation of state: JMD95P or MDJWF)
1852     - fixed several errors and redundancies in the data file
1853     - experiment uses looped cells
1854     - added matlab directory with diagnostic scripts for plotting of output
1855    
1856    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1857     - read AIM physics parameters from a file (data.aimphys)
1858     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1859    
1860    checkpoint46j_post
1861    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1862    o move wVel computation at the end of the time step, in S/R integr_continuity
1863    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1864    o update timeave pkg for wVel diagnostic.
1865    checkpoint46j_pre
1866    
1867    checkpoint46i_post
1868    o Clean up AIM package (and keep the results unchanged):
1869      include CPP_OPTION and use IMPLICT NONE in all routines ;
1870      declare all the variables _RL ; use _d 0 for all numerical constants.
1871      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1872    
1873    checkpoint46h_post
1874    o cleaned up the use of rhoNil and rhoConst.
1875      - rhoNil should only appear in the LINEAR equation of state, everywhere
1876        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1877        and the dynamical equations are all divided by rhoConst
1878    o introduced new parameter rhoConstFresh, a reference density of fresh
1879      water, to remove the fresh water flux's dependence on rhoNil. The default
1880      value is 999.8 kg/m^3
1881    o cleanup up external_forcing.F and external_forcing_surf.F
1882      - can now be used by both OCEANIC and OCEANICP
1883    checkpoint46h_pre
1884    
1885     Added code to convert surface volume flux (fresh water) into
1886     a mass flux when using P coordinates in the ocean (OCEANICP).
1887     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1888    
1889    checkpoint46g_post
1890    o Include a new diagnostic variable phiHydLow for the ocean model
1891      - in z-coordinates, it is the bottom pressure anomaly
1892      - in p-coordinates, it is the sea surface elevation
1893      - in both cases, these variable have global drift, reflecting the mass
1894        drift in z-coordinates and the volume drift in p-coordinates
1895      - included time averaging for phiHydLow, be aware of the drift!
1896    o depth-dependent computation of Bo_surf for pressure coordinates
1897      in the ocean (buoyancyRelation='OCEANICP')
1898      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1899        Theta, Salinity, and Pressure in the parameter list. This routine is
1900        presently contained in find_rho.F. This routine does not give the
1901        correct density for 'POLY3', which would be a z-dependent reference
1902        density.
1903    o cleaned up find_rho
1904      - removed obsolete 'eqn' from the parameter list.
1905    o added two new verification experiments: gop and goz
1906      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1907    checkpoint46g_pre
1908    
1909    checkpoint46f_post
1910    o Enable tangent linear (forward mode) gradient checks:
1911      - extended active file handling to g_... files
1912      - added TANGENT_SIMULATION to theSimulationMode
1913      - extended grdchk package accordingly
1914    o added tangent linear setup in verification/carbon/code_ftl
1915    o added adjoint setup in verification/front_relax/code_ad
1916    
1917    checkpoint46e_post
1918    o Added new equation of state -> MDJWF
1919      - EOS of McDougall et al., 2002, JAOT, submitted
1920      - caveat: the equation of state is only valid for a smaller (more
1921        realistic?) range of values than JMD95P/Z and UNESCO
1922      - added masks to the calculation of pressure in store_pressure
1923      - added more check values for density in check_eos (ini_eos.F), some of
1924        the old check values are out of the range of the MDJWF-eos, so don't
1925        expect perfect matches for those
1926    checkpoint46e_pre
1927    
1928    checkpoint46d_post
1929    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1930      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1931      case of pressure coordinates. eosType='JMD95Z' in
1932      combination with buoyancyRelation='OCEANICP' now causes an error.
1933    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1934      in find_alpha/beta.
1935    checkpoint46d_pre
1936    
1937    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1938      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1939    
1940    checkpoint46c_post
1941    o Changes necessary for ocean in p-coordinates
1942     -  Added new buoyancy relation = 'OCEANICP'
1943     -  Added new parameters = gravitySign (this used to be contained inside
1944        the factor dRdZ which I added when we first switched to R coordinates).
1945     X GM/Redi is not compatible (yet)
1946     X bottom drag and no-slip need to be debugged.
1947    checkpoint46c_pre
1948    
1949    checkpoint46b_post
1950    o Added new equation of state -> JMD95Z and JMD95P
1951      - EOS of Jackett and McDougall, 1995, JAOT
1952      - moved all EOS parameters into EOS.h
1953      - new routines ini_eos.F, store_pressure.F
1954    o Added UNESCO EOS, but not recommended because it requires
1955      in-situ temperature (see JMD95)
1956    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1957      unesco.f to be used with POLY3
1958    checkpoint46b_pre
1959    
1960    checkpoint46a_post
1961    o Added (atmospheric) pressure loading
1962      - new field in FFIELDS.h, etc...
1963      - new cpp flag ATMOSPHERIC_LOADING
1964    o Changed hFacC to _hFacC in calc_phi_hyd.F
1965    o Added SHORTWAVE_HEATING to some files for consistency
1966    checkpoint46a_pre
1967    
1968    checkpoint46
1969    further merges from release1_p5
1970    o new ctrl package
1971      - adopted from ECCO environment to enable optimization
1972      - added Eliassen Palm fluxes to controls
1973    o added Eliassen Palm flux controls to gradient check package
1974    o cost package
1975      - Compatible with new ctrl package
1976      - added Eliassen Palm cost hooks
1977      - modif's of existing cost functions
1978    o Adjoint-related bug fixes in kpp:
1979      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1980      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1981    o autodiff package
1982      - flow directives:
1983        + new for S/R do_the_model_io
1984        + enhanced for S/R checkpoint
1985        + new gmredi.flow
1986      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1987        disable adcommon.h/g_common.h by default.
1988      - fixed problem for adjoint of global_max
1989    o modified verification/carbon/
1990    o New setup for adjoint of global_ocean
1991    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1992    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1993    o incorporated hooks for sponge layer code (external_forcing.F)
1994    
1995    checkpoint45d_post
1996    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1997    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1998      (affects plume_on_slope "cg2d" output)
1999    o add new parameter deltaTfreesurf for free-surface time stepping
2000    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2001    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2002    o change phiMin in exp1 (to agree with documentation)
2003    o add new flags:
2004     - T,S forcing inside/outside Adams-Bashforth
2005     - turn off temp,salt advection and/or forcing
2006     - for each tracer, define internal flag for multiDimAdvection & A-B
2007    o monitor: change definition of KE to check conservation of Energy
2008    
2009    checkpoint45c_post
2010    o Removed f90 comments ("!")
2011    o Modified initialisations to enable exf package for MITgcm
2012      (without invoking ECCO_PACKAGE).
2013    o modifications to gradient check package (Martin Losch)
2014      - enable centered differences
2015      - modified format of standard output
2016    
2017    checkpoint45b_post
2018    o cleaned exchange calls in cg2d
2019    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2020    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2021      to configure barotropic setup (Martin Losch)
2022    o moved some initialisations within bi,bj loop in dynamics
2023      (TAF flow dependency)
2024    o in initialise_varia, moved call packages_init_variables
2025      before convective_adjustment_init
2026      (corresponding adjustment of TAF tape initialisation).
2027    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2028    
2029    checkpoint45a_post
2030    o compute Rho over the whole domain (extend iMin,jMin indices)
2031    o specific exchange for X-slice domain (case Ny=1)
2032    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2033    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2034    
2035    checkpoint44h_post = checkpoint45
2036    o Fix to restore differentiability:
2037      place at which packages_init_variables is called in
2038      initialise_varia is crucial for reverse control flow.
2039    o modifications in GMRedi to enable stable adjoint
2040      (corresponding modif's in thermodynamics, dynamics)
2041    o added missing hook for sponge layer code in external_forcing
2042    o modified test cost functions
2043    o storing in gad_advection (plus removal of write(0,*)!
2044    o missing headers TR1.h added in convective_adjustment routines
2045    o errorMessageUnit set non-equal zero in eeboot
2046      (conflict on some platforms, e.g. IBM SP3)
2047    o modified carbon verif.
2048    
2049    checkpoint44h_pre
2050    o vertical grid option: allow to put the Interface at the middle between
2051      2 cell-centers ; replace delZ in pkg/kpp by drF.
2052    o GM Advective form: Tracers are advected using the residual transport (=
2053      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2054    
2055  checkpoint44g_post  checkpoint44g_post
2056  o fix surface correction term in multiDimAdvection (affects plume_on_slope  o fix surface correction term in multiDimAdvection (affects plume_on_slope
2057    results) ; ifdef missing in thermodynamics.F    results) ; ifdef missing in thermodynamics.F

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