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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.544 by edhill, Sat Sep 10 20:40:26 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 mnc-ify pkg/land as requested by Daniel
8    o various changes to mnc including:
9      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
10      - output can now be grouped so that all files within a group
11          change the ITER portion of their names in lock-step together
12      - can now read ("global") PER-FACE (in addition to PER-TILE) files
13          and works with both EXCH1 and EXCH2 (but needs more testing)
14      - writing works for all verification test cases w/ g77 on Linux
15    
16    checkpoint57r_post
17    o make MNC variable initialization happen earlier
18    o add diagnostics for (almost) each term of the momentum Eq.
19    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
20    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
21    o remove MINIMAL_TAVE_OUTPUT option ;
22      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
23    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
24      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
25    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
26    o add time-dependent SST, SSS control
27    o cost terms in ecco/ modularized (new cost_generic.F)
28    o cost_averages routines are modularized (new cost_averagesgeneric.F)
29    o new infrastructure for seaice model vs. obs misfits in seaice/
30      * driver from the_main_loop.F is seaice_cost_driver.F
31      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
32      * gradient check in Exp. 6a of natl_box_adjoint/
33    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
34      (see README file)
35    
36    checkpoint57q_post
37    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
38    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
39      - bug was reported by Jean-Michel and Ian Fenty
40    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
41      update exp. cpl_aim+ocn output.
42    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
43      Needed for high-res. runs with large global files
44      to be able to limit tapelev size
45    o Changed some tests for adjoint:
46      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
47      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
48      * global_ocean.90x40x15/ back to default 3-level checkpointing
49    o Modifications to enable scripted COMMON to MODULE conversion
50      * verification/OpenAD/code/ has necessary scripts and description;
51      * converts, compiles and runs successfully;
52    
53    checkpoint57p_post
54    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
55    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
56      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
57    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
58    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
59      (was already the case for dissipation with mom_vecinv,
60       and also the case for grad.PhiHyd when staggered-timeStep)
61      This will allow to put dissipation out-off the AB time-stepping.
62     Unfortunately, affects truncation error. Update output of exp. that "fails"
63      (cg2d matching number) and leave the others for later: front_relax(10),
64      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
65      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
66    
67    checkpoint57o_post
68    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
69      (2) its ready to be documented during the 20050801 DocFest
70    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
71      for ideal_2D_oce and lab_sea on linux_ia32_g77
72    o set to #undef CTRL_SET_OLD_MAXCVARS_30
73      in global1x1_tot/code_seaice_adj to access indices 32, 33
74      (worth another tag)
75    
76    checkpoint57n_post
77    o adding precip control xx_precip 32
78    o adding swflux control xx_swflux 33
79    o Replacing 10 forcing penalty cost routines by 1 generic.
80    o Implementing partitioning in time-mean and variable adjustment
81      for atmos. state.
82    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
83    o in natl_box_adjoint:
84      * updated exp 1 to 10
85        (but does not have time-mean vs. variable split results yet)
86    o updated global1x1/*_seaice_adj/
87      to incorporate latest changes
88    o enable useSingleCpuIO for mdsio vector routines
89      (applies in particular to tapelev I/O)
90    o removed inefficient K-loop in all active_file*control*.F
91    
92    checkpoint57m_post
93    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
94      and advect_cs (use EXCH-2 and standard cs-32 grid files).
95    o pkg/exch2: filling of face-corner halo regions is optional
96      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
97    
98    checkpoint57l_post
99     tag before updating tutorials (pre-release-2)
100    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
101       for output and interpolation of input fields onto model grid)
102    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
103       Affects results of exp. rotating_tank ; update output.txt.
104    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
105          and taking the square quantity and/or using a fraction-weight field.
106    o fix aim_diagnostics_init.F mate numbers.
107    o add mnc output capability to diagnostics/diagstat and update
108      our cvsignore files for the ACSII output generated
109    
110    checkpoint57k_post
111    o lab_sea now uses diagnostics package and provides a suite of
112      new EXF diagnostics output.
113    
114    checkpoint57j_post
115    o exf
116      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
117        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
118        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
119      * extended diagnostics output
120        - now includes all EXF variables
121        - hs, hl moved to common block
122        - separate S/R for diagnostics, called after ctrl vector is added
123        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
124        - EXFqnet contains true Qnet (i.e. includes qsw)
125      * updated verif. lab_sea, global_with_exf
126      * Rearranging hflux (exf_mapfields -> exf_getforcing)
127        to ensure that diagnostics sees a true EXFqnet
128    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
129    o diagnostics pkg: change pointers so that 1 diagnostic can be used
130      several times with different frequencies.
131    o mnc-ify the thsice package as requested by Daniel Enderton
132      - the monitor--MNC output needs work
133      - many attributes need to be added (most are currently blank)
134    o mnc-ify theaim_v23 package as requested by Daniel Enderton
135      - many attributes need to be added (most are currently blank)
136    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
137    o add Sadourny like discretization to the 4th.O vorticity advection scheme
138    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
139      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
140         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
141    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
142     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
143    
144    checkpoint57i_post
145    o Diagnostics package was changed: diagnostic allocation is now deactivated
146      by setting an empty file name in the namelist (used to be by setting 0 frequency)
147    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
148      add 1rst Order upwind vertical Shear.
149    o add a quick fix for A/B checkpointing in OFFLINE mode
150    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
151      end-run around the C/Fortran linking horror in eesup/src/timers.F
152    o added pkg/runclock: allows user to terminate run based on wall clock
153    o added non-hydrostatic scaling parameter: nh_am2
154    o pkg/my82: futile attempt to make results compiler-independent by adding
155      some "_d 0", etc. no effect.
156    o for mnc output, fill the 'T' coordinate var with myTime and create a
157      separate 'iter' variable for iteration count
158    o pkg/diagnostics:
159      add new capability: output of Global/Regional & per-level statistics ;
160      tested against monitor output (including land & thSIce) on various exp.
161    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
162    
163    checkpoint57h_done
164      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
165      data.diagnostics, data.gchem, data.ptracers) is done.
166    
167    o pkg/diagnostics: prepare for Global/Regional statistics.
168      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
169    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
170      and rename it: DIFFERENT_MULTIPLE
171    
172    checkpoint57h_post
173    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
174    o pkg/diagnostics: change output frequency, now in seconds (instead
175      of Nb of iterations). This requires to change data.diagnostics.
176    checkpoint57h_pre
177    
178    o in mnc, let the user create the output dir if both mnc_outdir_date
179      and mnc_outdir_num are false
180    o add fflags() to pkg/diagnostics which allows one to specify, on a
181      per-file basis, the file precision [default behavior is unchanged]
182    o added diagnostics to pkg/kpp, including computation of mixed layer
183      depth based on a temperature/density criterion
184    o updated verification/natl_box to test the new pkg/kpp diagnostics
185    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
186    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
187    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
188      not mnc -- this mistake was found by JMC and is now corrected
189    
190    checkpoint57g_post
191    o add Adams-Bashforth 3rd Order time stepping:
192      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
193      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
194    checkpoint57g_pre
195    
196    o make lambda[Theta,Salt]ClimRelax spatially varying
197      (default remains spatially uniform constant based on tau)
198    o added new control variables
199      * init. uVel, vVel, etanN
200      * lambda[Theta,Salt]ClimRelax
201    o separate masks used for ctrl_pack/unpack 'from write_grid' output
202      (suggested by G. Forget)
203    
204    checkpoint57f_post
205    o add parameter "baseTime" = model base time = time at iteration zero
206      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
207      account for baseTime shift
208    o move Coriolis arrays from PARAMS.h to GRID.h
209    checkpoint57f_pre
210    
211    o mnc-ifying the seaice package
212    o introduced an alternative length scale calculation for use in the limiting
213      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
214    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
215    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
216      as well as grad(vort3).  Made it compatible with both approximate form
217      for the cubed sphere and full form of these gradients.  Added flag
218      useFullLeith to select between approximate and full form.  
219    o add "d0" in getcon.F to reduce differences between compilers/platforms
220      update output.txt of exp. fizhi-gridalt-hs
221    o change port_rand funtion to allow to set the seed.
222    o fix obscure MNC bug involving conversion between reals and integers
223      - it caused no problems with certain (eg. gcc, ifc) compilers but the
224        new version is now more standards-compliant
225    o adjoint-related modifications
226      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
227      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
228      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
229    
230    checkpoint57e_post
231    o Adding eddy stress controls a la Ferreira et al.
232    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
233    
234    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
235      update output.txt of exp. fizhi-gridalt-hs
236    o add more "Z" dimensions and associated coordinate vars to MNC
237    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
238    o parameter calendarDumps: when set, approximate months (30-31 days) and years
239      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
240      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
241      months and years.  Requires pkg/cal.
242    o diagnostics: add pickup functionality
243      - off by default for backwards compatibility
244      - current version only uses MDSIO -- MNC will be added
245    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
246    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
247    
248    checkpoint57d_post
249    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
250    o modify verification/ideal_2D_oce so that it tests the creation of mnc
251      output from the diagnostics package
252    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
253    o make genmake2 more portable by using ".$FS" instead of ".f" for more
254      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
255    o add coordinate variables to the MNC output from the diagnostics package
256    o change MNC-flags default value: true when useMNC=TRUE
257    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
258      the ability (off by default) to read the grid information using MNC
259    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
260    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
261    o do snap-shot diagnostics at the middle of the time-interval (instead of
262      at the end).
263    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
264      new test for AIM with thSIce + slab-ocean
265    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
266    o move state variable diagnostics to the beginning of the time step ;
267      (note: still needs some work specially for snap-shot diagnostics)
268      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
269    
270    checkpoint57c_post
271    o Change testing option (-ieee) to get closer agreement between g77 & ifort
272    o generate new output.txt files on faulks with g77 & the new -ieee option
273    checkpoint57c_pre
274    
275    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
276      update output.txt of exp. global_ocean.90x40x15
277    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
278      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
279    o add saltFlux(+File) forcing capability with periodicExternalForcing
280    o allow to use pkg diagnostics for GM-Redi & ThSIce output
281    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
282    o improvements for the MNC output from DIAGNOSTICS:
283      - correct handling of the unlimitied dimension
284      - all dims now have associated coordinate variables
285      - variables located at U, V, and Corner ("Z") points are now written
286        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
287        *all* data points are output
288    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
289    o added pkg/seaice/seaice_monitor.F
290    o mdsio_readfield.F can now read files visible only to master MPI process.
291    o pkg/seaice: some test code for ice-modified ocean stress
292    o exf_getffields interpolation defaults to bilinear for all scalar forcing
293      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
294      spurious negative numbers for precipitation and humidity.  Will cause
295      some small numerical differences for integrations using pkg/exf/exf_interp.F.
296    o pkg/ctrl/
297      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
298        May be enabled via doPackDiag
299      *  introduce z-scaling of
300         + gradient (doZscalePack) and
301         + control (doZscaleUnpack)
302    o pkg/mdsio/
303      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
304      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
305    
306    checkpoint57b_post
307    o simplify options in diagnostics_fill arguments (remove weird combinations)
308    o fix MNC coordinate variables so that they now contain per-face index
309      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
310      general, EXCH2 grids are only aligned to a "local" coordinate system
311    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
312    o Implement instantaneous output within pkg diagnostics:
313      setting a negative frequency in data.diagnostics produces
314     "snap-shot" output (as opposed to time-average if freq > 0)
315    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
316      NOTE: change ptracer diagnostics name: use 2 characters to work with
317            more than 9 tracers. Add also diagnostics of advect & diffus flux.
318    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
319      becomes the coordinate variable for the 'T' dimension
320    o add CF-style coordinate variables to MNC
321      - just a first cut:  numbers are meaningless on the cubesphere and
322        missing along the T axis but otherwise it works!
323    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
324    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
325    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
326      this is based directly on what the model compute, so that the content of
327      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
328    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
329    o clean up build options files for SunOS, in particular
330      - remove -traditional from xmakedepend
331      - change -xarch=v9 to -xarch=native for f77
332      - restore use of make (not gmake)
333      - add CC=gcc if using g77
334    o changes per discussion of AM, JMC, & EH3 today:
335      - move redundant "grid" variables out of "state" -- in preparation of
336        creating proper CF-style coordinate variables and in recognition
337        that any/all grid variables can be easily copied (eg. w/NCO) from
338        the grid files into any of the other NetCDF files
339      - *always* output grid variables with MDSIO (this will eventually be
340        changed)
341      - output MNC grid file if useMNC is true
342    o every instance of _END_MASTER() has been found and replaced with
343      _END_MASTER( myThid ) in order to satisfy certain picky Sun
344      preprocessors
345    o re-arrange diagnostics pkg initialisation:
346     - allow each package to extend the available diagnostics list
347     - add some checking and fix small problems (multi-threaded, ...)
348     - new S/R diagnostics_fill (replace fill_diagnostics):
349       look through the short list of active diag. (instead of the long list)
350       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
351    
352    checkpoint57a_post
353    o this set of changes restores TAMC compatibility
354      tested for global_ocean.90x40x15 adjoint on trough
355      (what a pain)
356    
357    checkpoint57a_pre
358    o some modifs in tools/build_options for sunos
359    o call ctrl_pack for ctrl at end for optimcycle=0
360    
361    checkpoint57
362    o add horizontal bi-harmonic viscosity for vertical velocity
363      - new parameter viscA4W (defaults to viscA4)
364      - affects only non-hydrostatic code
365      - to be done: no-slip lateral boundary conditions
366    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
367    o implement Implicit Vertical advection for pTracers
368    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
369      (implemented also for implicit vertical diffusion & advection)
370    o OBCS: extend application of tracer open boundary conditions
371      to a strip beyond the boundary of width Olx/Oly
372    o add call monitor to TAF set of required calls (flow directives)
373      and include in natl_box_adjoint
374    o untangle a few ifdefs related to cost, ctrl, autodiff
375      untangel a few ALLOW_ECCO_OPTIMIZATION
376    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
377      (theta2, salt2 in ecco_cost_weights)
378    
379    checkpoint56c_post
380    o OBCS as control variables
381      - update ctrl_ad_diff.list, obcs_ad_diff.list
382      - remove balance of obcs controls from default
383      - fix index bug nobcs in ctrl_init
384      - fix dummy fields filen in ctrl_pack
385      - add dummy weights for obcs
386    o lsopt: comment out fort.94 output
387    o optim:
388      - remove unnecessary header files
389      - adjusted namelists
390      - add xerbla.F to Makefile
391    o exf:
392      - multiple modifications of exf_check_range
393      - unit change in exf_init_runoff from [m/year] to [m/s]
394    o mdsio:
395      - i/o-vector change debugLevel from debLevA to debLevB
396    
397    checkpoint56b_post
398    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
399      is called from DO_THE_MODEL_IO
400      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
401      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
402      - clean up PTRACERS_WRITE_TIMEAVE a little
403    o add another verification experiment that tests both the cfc-pkg and
404      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
405      reactive tendencies treated inline with regular timestepping
406    o testreport previously did a lousy job of comparing small numbers, so
407      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
408      implemented in the little c-progam tmp_cmpnum.c which is embedded in
409      testreport.
410    o ptracers_monitor: bug fix for MPI
411    
412    checkpoint56a_post
413    o GCHEM: finish reorganizating the package
414      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
415        (introduces another 3D-array for each passive tracer, but only if
416        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
417        gchemTendency is not needed because the timestep is done separately)
418      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
419      - GCHEM is now---more or less cleanly---separate from PTRACERS
420      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
421        so clear to me how that should be done in a general way.
422    o CFC: improve formatting of output in CFC_ATMOS
423    o PTRACERS:
424      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
425        that ALL experiments with ptracers enable can be checked. This makes
426        GCHEM_MONITOR obsolete.
427      - include a runtime parameter PTRACERS_monitorFreq that defaults to
428        monitorFreq
429      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
430    o add PTRACERS (PTR0[1-5]) to testreport output
431    o exf_check_range:
432      * default changed to .TRUE.
433      * will check values for niter0 if debLevA, every timestep if debLevB
434      * STOP in exf_check_range if 'out of range'
435      * range chosen generous to allow for potential extema
436      TBD: a version with stricter range
437           permitted range would be runtime parameters
438    o GMredi:
439      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
440      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
441      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
442    o GCHEM:
443      - move call to GCHEM_FORCING_SEP, so that it is now called before
444        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
445      - introduced a useGCHEM runtime flag and applied it everywhere.
446      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
447        this flag is now only visible within GCHEM-pkg routines.
448      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
449        be replaced by a 3D array that is computed before thermodynamics; for
450        this, the tracer ID iTracer had to be included into the parameter list
451        of ptracers_forcing
452      - set up forward_step to call gchem_forcing, that will replace
453        gchem_forcing_int in ptracers_forcing
454      - cleaning up
455    o small cleaning of exch2: remove files that are also in eesupp/src
456    
457    checkpoint56
458    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
459    o mnc: cleanup "full" files--fixes out-of-memory problem
460    o ECCO-GODAE
461      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
462      * fully merged and updated from SIO code
463        windstress sign change affects
464        - exf_inscal_[u/v]stress
465        - sign of xx_tau[u/v] adjustments
466        - signs in cost_scat
467      * ctrl_get_gen: avoid update of tau[u/v] for first few days
468      * natl_box_adjoint updated and compressed
469      * 2-level checkpoint switch added
470        (tested in EXP. 1 of natl_box_adjoint)
471      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
472    o SVD
473      * first complete, non-hacked version for SVD calculations
474      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
475        performed via direct access files admtlm_vector.it????
476        (via ctrl_[un]pack)
477      * optimcycle is used for ARPACK iteration counter
478        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
479      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
480        and add linear transforms where necessary
481      * controls are initial/final SST, SSS (can be extended; need to check
482        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
483    o mdsio: filename info to both stderr, stdout
484    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
485      from sign change
486    
487    checkpoint55j_post
488    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
489      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
490    o add consistent build directories and .cvsignore files to verification
491    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
492    o make all subroutines 30 or less characters in length for certain older
493      compilers to work (a thorough search only turns up two routines in
494      pkg/ptracers)
495    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
496      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
497    
498    checkpoint55i_post
499    o change arrays for total vertical diffusivity (2.D if explicit,
500      3.D if implicit) ; each ptracer uses its own background value.
501    o added mnc/NetCDF output capability to ocn_compon_interf
502      - added bits to verification/cpl_aim+ocn so that it can run on
503        ITRDA and other clusters without the mpirun "-wd" option
504    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
505      configuration
506    o give MNC the ability to create additional files rather than
507      exceeding a specified file size limit "MNC_MAX_FILESIZE"
508      - the default is just less than 2GB which is a practical limit
509        on many systems
510    o Compute the non-local term using either KPP vertical diffusivity (=default)
511       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
512    
513    checkpoint55h_post
514    o add verification test "vermix"
515    o remove all the *_ioinc flags and replace with the single global
516      outputTypesInclusive flag
517    o allow to set a vertical profile of vertical diffusivity for T & S
518    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
519    o useMNC moved from data.mnc to data.pkg
520    
521    checkpoint55g_post
522    o Renaming carbon AD experiments to comply with testreport conventions
523    o Updating adjoint of Held-Suarez hs94.1x64x5
524    o Fixing directives for non-ECCO forward_step, after ECCO directives
525      have been fixed to avoid recomp. of do_oceanic_phys
526      Works well for global_ocean.90x40x15,
527      but recomp. issue remains for carbon
528    o Updating adjoint output for natl_box_adjoint after
529      pkg/ecco has been modified (see taga c55d_post)
530    
531    checkpoint55f_post
532    o rename to timeave_init_fixed
533    
534    checkpoint55e_post
535    o some delicate re-shuffle of store directives to avoid one
536      extra call of do_oceanic_physics
537      affects ecco_the_main_loop.F, do_oceanic_physics.F
538      checkpoint_lev1_directives.h
539    o NB: this may break global_ocean adjoint temporarily,
540      but it is clear how to fix it. Will do later, need this now.
541    
542    checkpoint55d_post
543    o ECCO specific cost function terms (up-to-date with 1x1 runs)
544    o ecco_cost_weights is modified to 1x1 runs
545    o modifs to allow observations to be read in as
546      single file or yearly files
547    o enable to read exf forcing fields as either
548      single file or yearly files (flag useExfYearlyFields)
549    checkpoint55d_pre
550    
551    o switch between 2-level and 3-level checkpointing
552    o add ability of MNC to write local and "partial" (eg. 2D slices where
553      the full 3D field is never actually stored) arrays to NetCDF files
554      with the correct (that is, the complete multi-dimensional) set of
555      array indicies
556      - used in mom_vecinv() to write the diagFreq output
557      - tested (demonstrated) in verification/aim.5l_cs
558    o further mnc-ification
559      - add verification/lab_sea to the list with mnc setups
560      - fix undefined mnc v-names in cd_code
561      - add kpp to mnc output (both snapshot and timeave)
562    o non-hydrostatic code
563      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
564        in calc_gw.F
565      - defaults to viscAh
566      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
567        friction or Leith) in non-hydrostatic mode, as long as there is
568        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
569    o pkg/cost
570      extend simple cost functions to treat time mean quantities
571      (T,U,V) via cost_accumulate_state from cost_tile
572    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
573        be 2 times larger than the minimum size the advection scheme requires.
574        now get a perfect conservation of salt in advect_cs test-exp (updated)
575    o GGL90 (Gaspar's TKE mixed layer)
576      - add horizontal diffusion of TKE, requires exchanges in
577        do_fields_blocking_exchanges, horizontal diffusivity is zero by
578        default. In OPA there is no horizontal diffusion of TKE but the
579        mixing coefficients are computed from a horizontal average of TKE of
580        6 points or so. I think that diffusion has a little more physical
581        justification.
582      - clean up ggl90_calc in the hope of reducing memory usage (this hope
583        was in vain)
584      - mask tke-variable in ggl90_init
585    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
586    o fix biharmonic diffusion on CS-grid.
587    o more obcs stuff
588      - added obcs_external_fields_load as an alternative to the EXF-pkg option
589        for reading boundary values. This routine is called from
590        obcs_prescribe_read
591      - updated obcs_check
592      - changed sponge layer relaxation parameter units for days to seconds
593      - turned off sponge layer by default
594      - changed argument list of OBCS_CALC to myTime+deltaTclock
595      - fixed about 35 bugs in obcs_external_fields_load
596    
597    checkpoint55c_post
598    o obcs stuff
599      - new runtime flags useOBCSprescribe, useOBCSbalance
600      - re-arranged obcs_calc
601      - moved exf_getobcs to obcs_prescibe_read
602        obcs_prescibe_read is called after ORLANSKI stuff
603        and independent of it (executable can contain all).
604      - updated obcs_check
605      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
606        These may be necessary only if tangential velocities are
607        prescribed at OB, not sure, needs testing.
608    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
609      which simplifies the calls and passes the ifc check-bounds test
610    
611    checkpoint55b_post
612    o add a 2D scalar, Z location, exchange_2 routine.
613    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
614      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
615      affects advect_cs results (for the wrong reason): update output.txt
616    o use a more standard discretization for biharmonic viscosity ;
617     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
618      affects results of dome set-up: update output.txt
619    o fix gad_advection.F (CubedSphere part), back to version 1.23
620    o fix bug in mom_vi_del2uv.F (CubedSphere part).
621    
622    checkpoint55a_post
623    o merged code to
624      * prescribe/read time-dependent open boundaries
625        (works in conjunction with exf, cal)
626      * sponge layer code for open boundaries
627      * each boundary N/S/E/W now has its own CPP option
628        (healthy for the adjoint)
629    
630    checkpoint55
631    o up-to-date adjoint of previous breaks
632      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
633      - global_ocean_ebm: adjoint still needs fix (TLM ok)
634      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
635      - carbon: * remove tr1-related adjoint verification
636                * add ptracer as control variable
637    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
638      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
639    
640    checkpoint54f_post
641    o in verification/carbin/ remove experiment related to
642      ALLOW_PASSIVE_TRACER (array tr1 etc)
643      code_ad/ input_ad/ results_ad
644    
645    o add two new packages
646      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
647        + subject to optimization (memory)
648      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
649        + subject to reordering (many GOTOs in the original code)
650        + so far opps is called for every (i,j) point, and then operates in
651          the vertical; one may want to reorder the scheme in order operate in
652          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
653          fields)
654    o overhaul of IO so that we now have flags for MDSIO and/or MNC
655      - all verification tests compile and run with linux_ia32_g77
656      - defaults are compatible with current input files--nothing
657        should change if you were not previously using MNC
658      - MNC output has been added in numerous places (eg. timeave)
659        but there are still a few writes not yet do-able with MNC
660        (this is in progress)
661      - flags now allow for either/or/both use of MDSIO and MNC and
662        documentation will soon follow
663      - numerous small formatting cleanups for ProTeX
664    o add version info (via BUILD_INFO.h) to MNC and stdout
665    
666    checkpoint54e_post
667    o add two new packages
668      - pp81 (Packanowski and Philander, 1981), Richardson number and
669        stratification dependent mixing
670      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
671      - these scheme operate in a similar manner as KPP (without ghat, of
672        course), however there is only one diffusivity that is used for both
673        temperature and salinity (and passive tracers)ç
674    o add offline package
675    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
676      provided by Stephanie Dutkiewicz
677    o genmake2: add ability to search for C compilers and cleanup test output
678      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
679    
680    checkpoint54d_post
681    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
682    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
683      leading to additional shift by 5 days each year of integration
684       (i.e. leading to considerable offset over the years)
685    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
686    o start with no AB and no initial filtering (staggerTimeStep):
687      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
688    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
689      (external loading & cpl import/export stay in forward_step.F)
690    o update coupling interface to work with new staggerTimeStep
691    o change MDSIO ptracers_pickup.
692    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
693    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
694    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
695    
696    checkpoint54c_post
697    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
698      this affects (truncation error) output.txt of test-exp:
699       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
700    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
701    o change Qnet to always be the net heat flux, (+upward).
702      affects (truncation error) output of natl_box exp.: updated
703    o define the max number of passive tracers in PTRACERS_SIZE.h
704    o start to test mnc routinely in exp0
705    o add sea-ice loading (sIceLoad) as a new forcing field.
706    
707    checkpoint54b_post
708    o add testreport "-j JOBS" option for parallel builds (tested and pretty
709       impressive on Altix and Opteron systems)
710    o diagnostics can now write NetCDF files through the mnc package
711    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
712    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
713    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
714      affects (truncation error) output of lab_sea & natl_box exp.: updated
715    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
716    
717    checkpoint54a_post
718    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
719    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
720    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
721    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
722      + internal_wave (shift in writing cg2d_ini_res)
723    checkpoint54a_pre
724    
725    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
726      - modified verification/lab_sea and natl_box_adjoint accordingly
727    
728    checkpoint54
729    checkpoint53g_post
730    o prepare splitting of thermodynamics: store convect.counter in common block
731    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
732      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
733    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
734    o new parameter "nShapS": allow to treat differently S from T (nShapT)
735    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
736    o restore adjointability
737    
738    checkpoint53f_post
739    o modifications that affect AIM experiment results (update output.txt):
740      - no advection of S at top interface Nr (pkg/generic_advdiff)
741      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
742    o AIM pkg:
743      - include stability function into surf.Flux derivative relative to Tsurf
744      - calculate clear-sky radiation & surface temp. change (for diagnostics)
745    
746    checkpoint53e_post
747    o merged cylindrical coord configuration
748    o added rotating_tank experiment
749    checkpoint53e_pre
750    
751    checkpoint53d_post
752    o faulks upgraded: re-generate output.txt that have changed:
753       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
754    o Added Bryan and Lewis, 1979, vertical diffusivity profile
755    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
756    o added Sadourny discretization of Coriolis
757      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
758      - re-enabled use of omega3 (useAbsVorticity)
759    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
760      vector-invariant equations
761      - note: does *NOT* yet use same variable visc. for no-slip BC's.
762    o recoded the lateral boundary conditions for non-hydrostatic w, this time
763      hopefully without new bugs
764      - still to do: biharmonic friction for non-hydrostatic w
765    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
766    o regenerated output for global_ocean_ebm (using -ieee)
767    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
768      of mom_common/
769      - simple re-arrangement of instructions within computing loop
770    checkpoint53d_pre
771    
772    checkpoint53c_post
773    o new version of coupler for AIM+thSIce and Ocean models
774     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
775     - land: change Evaporation of snow
776     - aim with thSIce: fix bug in snow-precip.
777    o changes to calc_gw.F
778     - bug fix for w^2 term near the bottom boundary
779     - (hopefully) improve the lateral slip boundary condtions for use with
780        partial/looped cells
781      - because the bug fix changes two verification experiments anyway (exp5
782        and plume on slope), change the lateral boundary condition from half slip
783        to the value of no_slip_sides
784    o ebm package wasnt quite up to the parallel task. Fixed that.
785    o Adjoint of EBM package + verification
786      * TLM OK
787      * ADM not sufficient accuracy yet (needs further testing)
788    
789    checkpoint53b_post
790    o Commiting new energy balance model to repository
791      * package is pkg/ebm
792      * verif. is verification/global_ocean_ebm
793      * references are in ebm_driver.F
794    C      * X. Wang, P. Stone and J. Marotzke, 1999:
795    C        Global thermohaline circulation. Part I:
796    C        Sensitivity to atmospheric moisture transport.
797    C        J. Climate 12(1), 71-82
798    C      * X. Wang, P. Stone and J. Marotzke, 1999:
799    C        Global thermohaline circulation. Part II:
800    C        Sensitivity with interactive transport.
801    C        J. Climate 12(1), 83-91
802    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
803    C        Destabilization of the thermohaline circulation
804    C        by atmospheric eddy transports.
805    C        J. Climate 7(12), 1870-1882
806    o Will need long integration testing.
807    checkpoint53b_pre
808    
809    o created pkg/mom_common in preparation for variable viscosity code
810    o renamed and split ini_mnc_io
811    o pkg/land: only liquid water can diffuse or run-off
812    o AIM using land: soil wetness availability account for snow
813    o added printMapIncludesZeros to EEPARMS namelist
814    
815    checkpoint53a_post
816    o restore TAMC compatiility for exf_constants.h
817      (no usage of _d in .h)
818    o Additional storing in KPP in an attempt to fix
819      TAMC problem with adjoint of KPP code.
820      (no success...)
821      Identical code works fine with TAF.
822    o Fixed verification/natl_box_adjoint experiments.
823      Initial conditions for Experiments 4 and 5 are now
824      set to "SEAICE_initialHEFF=0", which is more reasonable,
825      and hence gives results closer to that of Experiment 2.
826      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
827    
828    checkpoint53
829    o stable checkpoint with up to date adjoint
830      TLM tests only run for 1st grdchk at the moment. Its unclear if
831      this is a code problem or a problem with resetting code for g_
832      variables that is being autogenerated wrong.
833      Otherwise:
834       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
835       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
836         are both still in chaos following their security messes.
837    
838    checkpoint52n_post
839    o various build (mostly genmake2) changes including:
840      - ability to build/run more easily within Cygwin and MacOS X
841      - more complicated Makefiles with a stronger dependence on Gnu Make
842    o pkg/seaice modifications
843      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
844        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
845        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
846      - changed proxy for geostrophic velocity and updated
847        verification/lab_sea/results/* accordingly
848      - removed ADI dynamic solver from pkg/seaice
849      - replaced all occurrences of 1/CSTICE or 1/CSUICE
850        they caused a segmentation fault under certain circumstances
851      - removed unused field WATR
852    o bug fix in exf-package:
853      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
854         now reflect that.
855    o small fixes in the cal-package:
856      - set reference date to first of January for the 'model'-calendar
857      - failing of cal_CheckDate in cal_FullDate now actually results in a
858        warning
859    o small modifications in exf-package to increase flexibility:
860      - change climtempfreeze from a constant to a runtime parameter that
861        is specified in data.exf_clim (default = -1.9)
862      - introduce runtime parameter windstressmax (default = 2.0) that is
863        specified in data.exf
864    o fix in pkg/thsice:
865      - update Evap (Tsf changes) to be consistent with Latent heat flux
866      - maintain snow precipitation unchanged (even if Tsf >=0).
867     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
868    
869    checkpoint52m_post
870    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
871      this does not change any of the results, because myIter=0 in swfrac always
872      lead to jwtype=2 (the default anyway), but the call makes little sense
873      as a default
874    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
875    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
876      atmospheric model (AIM) to use it ; add a "slab ocean" component.
877    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
878    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
879    o extending useSingleCpuIO option to work with new exch2 I/O format
880      - old-style, missing-tile I/O is still accessible by defining CPP
881        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
882    o monitor package can write to NetCDF files and/or STDOUT
883    o fix re-definition bug in MNC_GRID_INIT_ALL()
884    o doc/api_reference added
885      - a framework for building an API Reference Manual using all
886        the "protex" comments embedded in the code
887      - see pkg/generic_advdiff, pkg/mnc for examples
888    o MNC:
889      - make myThid the last argument for all subroutines
890      - new default for the grid files: NO halos
891      - add useMNC and other run-time flags
892      - separate per-file-group handling of the unlimited dimension
893      - early initialization of MNC w/ flags read at the eeboot stage
894        and lookup tables set in initialize_fixed
895      - write all MNC output to a freshly-created directory
896    o thermodynamics sea-ice (thsice) is now tested with testreport.
897    o test exp. advect_cs: use the standard cs32 grid ; update output.
898    o Added functionality to grdchk:
899      pick global i,j,k position (or nearest wet) where to perform check.
900    
901    checkpoint52l_post
902    o new land formulation:
903      a) use ground enthalpy as prognostic variable to ensure exact
904         energy conservation.
905      b) account for water temperature and for latent heat of freezing
906         in all processes (rain, run-off, ground storage)
907      c) compute surface and ground temperature implicitly.
908    o aim_v23 modification for new land model:
909      a) Treat separately land / ocean / sea-ice surface fluxes
910         to allow implicit computation of land & sea-ice surface temp.
911      b) add snow precipitation.
912    checkpoint52l_pre
913    
914    o fix problem (when 1 tile is empty) in min/max monitor.
915    o fix bug in timeAve (u,vZetatave in common block)
916    o no restoring terms under ice for pkg/seaice
917    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
918    o bug fix for pkg/seaice pickups
919    o change MNC call locations and add coordinate attributes
920    o mask vorticity at the corner ; affects global_ocean.cs output
921    o fix ini_curvilinear_grid ; test CS experiments with mpi
922    o aim.5l_cs: modify sea-ice fraction input file ; update output
923    o exf: Adding simple range check routine for exf fields after read
924    
925    checkpoint52k_post
926    o removed top-level directory "diags"
927      - we migrated these functions to pkg/timeave a long time ago
928    o fixed bug introduced in pkg/monitor
929    o accuracy ctrlprec = 32 insuffient for gradient checks using
930      averaged fields (I/O via cost_averages)
931      -> use ctrl.h in active_file*.F to control I/O precision.
932    o paramter list of CALL ADTHE_MAIN_LOOP
933    o added initial do_the_model_io to ecco
934    o set all ...Freq to zero after cost_final
935      taveFreq, dumpFreq, pChkptFreq
936    o MAIN and ECCO differentiability restored
937    
938    checkpoint52j_post
939    o fix nchklev in tamc.h for global_ocean...
940    o Bringing flow and store directives up-to-date
941    o Really weird thing!
942      call do_the_model_io from the_main_loop with parameters
943      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
944      TAF places a faulty re-call of initialise_varia
945      after cost_final call which should not be there!
946    checkpoint52j_pre
947    
948    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
949      error messages
950    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
951    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
952      debug output
953    o modfied mdsio_writefield.F to handle non-global files under exch2
954    o update AIM Cubed-Sphere exp (aim.5l_cs):
955      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
956    o update AIM Equatorial Channel exp:
957      use standard aim_v23 pkg and change the SST fields to be more realistic.
958    o globalFile now works with exch2
959    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
960      mon_vort3.F to make exch2 friendly with >1 tile per cube face
961    o limit timeave output for hi-res integrations
962    
963    checkpoint52i_post
964    o removed CPP_EEOPTIONS.h from verification/*/code
965    o updated the tiling for global_ocean_pressure
966    checkpoint52i_pre
967    
968    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
969      the old pkg/aim).
970    
971    checkpoint52h_pre
972    o shortened offending lines in exch2_send_rx?.template
973    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
974    o genmake2: add build & execute test for NetCDF code
975    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
976      old grid files, moved CPP_EEMACROS.h to pkg/exch2
977    o added useSingleCPUIO flag to monitor.F and mon_out.F
978    o added temporary hack for sea-ice dynamics on the cube:
979      metric terms are ignored and it is assumed that
980      there is no sea-ice on cube faces 1, 2, 4, and 5.
981    
982    checkpoint52f_post
983    o added exch2 cube routines to pkg/exch2
984    o modified hs94.cs-32x32x5 to use it
985    o added new grid files to hs94.cs-32x32x5
986    checkpoint52f_pre
987    
988    checkpoint52e_post
989    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
990      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
991    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
992      to work with implicit vertical advection and AB ;
993    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
994    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
995     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
996    checkpoint52e_pre
997    
998    o fix bug in impldiff when Nr=1 or Nr=2.
999    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1000    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1001    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1002      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1003    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1004    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1005    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1006    
1007    checkpoint52d_post
1008    o re-tiled many expts to allow comparison in multi-processor mode
1009      - updated output accordingly
1010      - changed hs94.128x64x5 to use intial T from file rather than use the
1011        random number generator
1012    o add infrastructure in model routines for fizhi and gridalt packages
1013    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1014    o changes to permit hi-res, cubed-sphere, configuration
1015      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1016      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1017      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1018        of surface winds for the cube
1019      (A verification experiment, based on global_ocean.cs32x15, but with
1020       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1021       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1022       complete with example surface forcing files and matlab scripts to look
1023       at the output and compare it with that of global_ocean.cs32x15.)
1024    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1025       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1026       to conform to the common rule.
1027    o check-in the first version of the coupler + interfaces for multi-components
1028       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1029       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1030       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1031       - ocean and atmos. share the same horizontal grid (no interpolation).
1032       - exchanges between component and coupler is done in forward_step
1033    o new verification experiment, cpl_aim+ocn:
1034       coupled ocean - AIM atmosphere on cs32 grid.
1035    
1036    checkpoint52d_pre
1037    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1038    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1039    
1040    checkpoint52c_post
1041    o Fixing OPTIONS files for use of exf:
1042      - ALLOW_ECCO not needed
1043      - ECCO_CPPOPTIONS.h should not be included from
1044        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1045        as has been the case in the past
1046      - All cal/exf related options are currently set in
1047        single header file. Should remain so until we
1048        agree on a consistent new policy.
1049    o Removed all CPP options for cal package.
1050      cal has no more CPP options.
1051    o modified STOREs in GAD_ADVECTION
1052    o corrected key comp. for passkey
1053    
1054    checkpoint52b_post
1055    o new version: "thsice" of thermodynamic sea-ice pkg:
1056     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1057     - modify fluxes but do not change theta directly;
1058     - light cleaning of bulk_force pkg (still needed with thsice).
1059     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1060       + output_thsice.txt to test thsice & bulk_force pkgs.
1061    o put back grid & coriolis monitor output.
1062    checkpoint52b_pre
1063    
1064    o call "do_the_model_io" at the beginning (=> dump initial state)
1065    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1066    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1067      (need info on NUMBER_OF_PTRACERS)
1068    o missing PTRACERS headers in some routines
1069    o default tamc.h in pkg/autodiff supposed to crash
1070      to ensure proper customization
1071    
1072    checkpoint52a_post
1073    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1074      - moved surfaceTendencyTice from pkg/seaice to main code
1075      - subroutine FREEZE_SURFACE now limits only surface temperature
1076        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1077        => new output.txt for global_ocean.cs32x15 & global_with_exf
1078      - keep the old version of FREEZE for backward compatibility;
1079        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1080      - corresponding modifs for TAF directives
1081    o added surface flux output variables to TIMEAVE_STATVARS
1082    o time-averaged output for pkg/ptracers
1083    o fix problem with ECCO-related divided adjoint
1084      snapshot file was missing some ad-variables,
1085      but no warning issued by TAF
1086    
1087    checkpoint52a_pre
1088    o some bug fixes for #undef REAL4_IS_SLOW
1089    
1090    checkpoint52 = ecco_c52_e35
1091    o after testing adjoints of checkpoint51u_post
1092    
1093    checkpoint51u_post
1094    o this is the post-merge tag of the ecco-branch
1095      (needs another clean checkout and re-testing)
1096    o various natl_box_adjoint configs and results
1097      but no input fields
1098    o obcs adjoint not yet merged!
1099    o adding ECCO global 1x1 and 2x2 degree configs
1100    o updated/extended some store directives for seaice
1101    o pkg/ecco now containes ecco-specific part of cost function
1102    o top level routines the_main_loop, forward_step
1103      supersede those in model/src/
1104      previous input data.cost now in data.ecco
1105      (new namelist ecco_cost_nml)
1106    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1107    
1108    checkpoint51t_post
1109    o this is the pre-merge tag of the ecco-branch
1110    
1111    checkpoint51s_post
1112    o cleanup: removed various obsolete #define-s
1113    o pkg/grdchk
1114      - renamed 'ph-grd 3' to 'grad-res'
1115      - merged from ecco-branch
1116        (remaining bug fixes for obcs gradient checks)
1117      - additional high-precision output for testreport
1118        (grep for 'precision_grdchk_result')
1119    
1120    checkpoint51r_post
1121    o cleaned up or removed CPP_OPTIONS.h files
1122    o updated results for some of the tests to reflect the new
1123      optfiles (-ieee: -O0 instead of -O3)
1124    
1125    checkpoint51q_post
1126    o cd_code:
1127      - moved cd_scheme.F -> cd_code_scheme.F
1128      - separate read_checkpoint from cd_code_ini_vars.F
1129      - separated cd_code part from write_checkpoint
1130      - updated AD_SOURCE, generated .flow
1131      - added CD_CODE_VARS.h to the_main_loop
1132      - Moving cd_code specific store dir.s to pkg/cd_code
1133    o ctrl package totally restructured
1134      - pack/unpack now optional and decoupled from
1135        xx_/adxx_ I/O
1136      - ctrl_pack/unpack cleaned
1137        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1138      - confined inclusion of AD_CONFIG.h to where necessary.
1139    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1140    
1141    checkpoint51p_post
1142    o create initial cd_code package
1143      - WARNING: the initialization of fields within packages
1144        is broken because INI_FIELDS (where READ_CHECKPOINT is
1145        called) is called *before* PACKAGES_INIT_VARIABLES.
1146        This seems to be backwards since
1147        1) its important to initially zero the entire field including
1148           the "halo" region
1149        2) zeroing needs to be done *before* reading pickup info
1150           and the pickup call might or might not happen in any
1151           particular run
1152      - this needs an overhaul for R2
1153    o cleanup verification/*/code/GMREDI_OPTIONS.h
1154    o cleanup testreport
1155    
1156    checkpoint51o_post
1157    o bringing AD-related verif's up to date with genmake2
1158      - carbon/
1159      - global_ocean.90x40x15/
1160      - hs.94.1x64x5/
1161      - (front_relax/ )
1162    o (more) consistent directory structure for AD-related verif.'s
1163    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1164    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1165    o bug fix in find_alpha.F for MDJWF:
1166      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1167        change rho -> rho-rhoConst
1168      - replace call find_rho to find_rhonum
1169    o initialisation of rFlx extended to full array (required by TAF)
1170      and shifted to thermodynamics
1171    o removed PTRACERS.h in ptracers routine
1172    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1173    o Correcting initialisations for fVerU, fVerV.
1174    o helping TAF to recognize dependency on kUp for
1175      fVerU, fVerV
1176    o Replacing delZ by delR in pkg/ctrl/
1177    checkpoint51o_pre
1178    
1179    o undid all of cp51 pending some cleanups and discussion
1180    o added the [#include "AD_CONFIG.h"] statement to all files that need
1181       it for adjoint/tl #defines
1182     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1183     o removed tools/genmake since it no longer works
1184    
1185    checkpoint51n_post
1186    o modifications to make FREEZE flux visible to pkg/kpp
1187      - moved surfaceTendencyTice from pkg/seaice to main code
1188      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1189      - subroutine FREEZE now limits only surface temperature
1190        (this means new output.txt for global_ocean.90x40x15,
1191         global_ocean.cs32x15, and global_with_exf)
1192    o added surface flux output variables to TIMEAVE_STATVARS
1193    
1194    checkpoint51n_pre
1195    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1196    o added [#include "AD_CONFIG.h"] to all files that use the following
1197      defines:
1198      - ALLOW_ADJOINT_RUN
1199      - ALLOW_TANGENTLINEAR_RUN
1200      - ALLOW_ECCO_OPTIMIZATION
1201    
1202    checkpoint51m_post
1203    o incorporating changes to get TAMC/TAF working in genmake2
1204      - added new TAMC/TAF targets to the Makefile
1205      - various cleanups related to package handling
1206      - these changes should have no impact on the forward model
1207    
1208    checkpoint51l_post
1209    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1210     - faster algorithm for cal_addtime.F
1211     - higher precision arithmetic, where needed
1212     - pkg/exf *startdate variables changed from calendar date to
1213       model integration time
1214    
1215    checkpoint51l_pre
1216    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1217    o enable to apply restoring on S & T only in a latitude band.
1218    o update output (external_forcing_surf modif. change truncation errors)
1219       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1220    
1221    checkpoint51k_post
1222    o change default to: useNHMTerms=.FALSE.
1223     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1224       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1225     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1226        exp1, ideal_2D_oce
1227     - change data file of oceanic exp (leave the results unchanged for now)
1228       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1229    o set gravitySign automatically according to the vertical coordinate used
1230      (and change sign: back to "logical" value: +1 when R increases downward)
1231    o added an include barrier to the default CPP_OPTIONS.h and
1232      removed the #include "PACKAGES_CONFIG.h" from it
1233    o fix a bug in mom_fluxform (from chk51j_post)
1234    
1235    checkpoint51j_post
1236    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1237    o adjusted some flow directives (dynamics, thermodynamics)
1238    o added cubed-sphere case to test cost function
1239    o heckpoint_lev?_directives.h now include
1240      pkg-specific directives, whenever those are enabled.
1241    o Moving pkg-specific flow directives to corresponding pkg
1242      Moving pkg-specific differentiation list to corresponding pkg
1243      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1244      ---> conventions are
1245           - pkg_ad.flow
1246           - pkg_ad_diff.list
1247           - pkg_ad_check_lev?_dir.h
1248    
1249    checkpoint51i_post
1250    o merge of the branch-genmake2
1251      - knowingly breaks the older genmake
1252      - automatic generation of all ALLOW_${PKG_NAME} defines
1253      - new testreport supersedes older testscript
1254    o large number of package inclusion and header cleanups
1255    checkpoint51i_pre
1256    
1257    o new output for adjoin of global ocean vector invariant
1258    o fix for checkpoint of thermodynamic seaice and bulk_force
1259    o Steph gchem various cleanups
1260    
1261    checkpoint 51h_pre
1262    o fixed some single quotes
1263    o modify gchem pkg to be more versatile
1264    o modifications to clean up dic pkg
1265    o add pkg/cfc
1266    
1267    checkpoint51g_post
1268    o provide links for ARPACK and ADM*TLM
1269    o start removing verification/vero/
1270    o update AD-related stuff
1271      (in particular some IF-statements in model/src/ routines)
1272    o adding to verification/global_ocean.90x40x15/ adjoint of
1273      vector invariant setup
1274    
1275    checkpoint51f_post
1276    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1277    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1278      of tracer Green's fucntions for ocean inversion project.
1279    
1280    checkpoint51f_pre
1281    o Added on-the-fly spatial interpolation capability
1282        "USE_EXF_INTERPOLATION" to pkg/exf.
1283      - This is a temporary Cartesian-grid hack until
1284        the super-duper ESMF coupler becomes available.
1285      - See verification/global_with_exf/README for usage example.
1286      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1287        flags and modified pkg/seaice accordingly.
1288    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1289        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1290        non-local transport term.
1291    
1292    checkpoint51e_post
1293    o pkg/mom_vecinv:
1294      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1295      - add time-ave diagnostic of vorticity advection.
1296    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1297    o atmospheric geopotential: - include water vapor effect;
1298                                - use p^kappa in p* scaling.
1299    o land pkg: read initial state from files.
1300    o AIM : add stratospheric drag in the upper level
1301    
1302    checkpoint51d_post
1303    o change function ILNBLNK (=> last non-blank char.) to return zero
1304      (instead of the string length) when the string. char is empty
1305    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1306    o modif's to restore TAMC compatibility
1307      - avoid "_d" constructs in PARAMETER declarations
1308      - avoid interrupting lines by comment lines
1309    o Use cluster local disks for purely local I/O
1310      vs. globally visible disks needed for ctrl stuff
1311      (merged from ecco-branch)
1312      - new active_file_loc... and mdsio_..._loc routines
1313      - affected packages: autodiff, ctrl, grdchk, mdsio
1314    
1315    checkpoint51c_post
1316    o introducing integer flag debugLevel
1317      - debLevZero: suppress all output
1318      - debLevA: standard
1319      - debLevB: equivalent to current debugMode=.TRUE.
1320    o introducing pathname variable mdsioLocalDir for mdsio
1321      that can be specified at runtime
1322      (relevant for cluster I/O to local disk)
1323    `
1324    >>>checkpoint51b_post
1325    adjoint of ptracers
1326    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1327    o extended state in checkpoint_lev?, etc.
1328    o alternative ctrl/cost with tr1 or ptracer
1329    o new comlev1_bibj_ptracers
1330    o new ptracers.flow
1331    o made ptracers_forcing same as external_forcing_s
1332    o added verification for adjoint with ptracers
1333      - adm. grdchk fail so far
1334      - tlm. grdchk OK
1335      - checked tapelev/comlev recomputations: OK
1336    <<<checkpoint51b_pre
1337    
1338    checkpoint51a_post
1339    o added code for biogeochemistry package
1340      - new pkgs: dic, gchem
1341      - new subroutine in ptracers
1342    o modify code for biogeo packages
1343      - in model/src and pkg/ptracers
1344    
1345    checkpoint51
1346    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1347      - autodiff, ctrl, exf, grdchk, seaice
1348      kept separate packages
1349      - cost, ecco, obcs
1350    o updating verification/internal_wave, verification/lab_sea
1351      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1352    
1353    checkpoint50i_post
1354    o Preparing next differentiable checkpoint and sync
1355      of MAIN vs. ecco-branch
1356      - 1st step: this one is differentiable
1357      - 2nd step: next(! not this) checkpoint will have updated packages
1358                  from ecco-branch)
1359    
1360    checkpoint50h_post
1361    o new package "land": provide surface BC for AIM.
1362    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1363    o AIM: use true log-P extrapolation for near surface temp (= as in
1364        F.Molteni paper) ; update aim.5l_cs output.
1365    o New variable in PARM03 for more flexible pickups
1366    o somewhat cleaned package initialisation sequence for
1367      ctrl/ cost/ ecco/ in packages_... routines
1368    
1369    checkpoint50g_post
1370    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1371      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1372      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1373        made the default because of faster convergence than ADI
1374    
1375    checkpoint50f_post
1376    o exf totally restructured
1377      - replaced all exf_set_ routines by one generic exf_set_gen.F
1378        and made sure it's still differentiable
1379      - split exf_getffields.F into new exf_bulkformulae.F
1380      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1381      - updated adjoint/makefile and relevant verif. accordingly
1382    
1383    checkpoint50f_pre
1384     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1385          + change Evap over land. (update aim.5l_cs output)
1386     o added missing .cvsignores and made uniform across expts
1387     o changed configuration of tidal_basin_2d expt
1388     o added pkg/debug functions for tracing code in fatal crashes
1389     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1390     o new fn in pkg/monitor to stop model if solution grows too big
1391     o removed lots of single quotes from comments
1392    
1393    checkpoint50e_post
1394    o make KPP work with PTRACERS
1395     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1396       nearly a copy of kpp_transport_s
1397     - there is no analogue to SurfaceTendencyS, so I have to use
1398       gPtr(of the surface layer) instead
1399    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1400    checkpoint50e_pre
1401    
1402    checkpoint50d_post
1403    o change kpp output from multiple-record state files to single-record state
1404      files analogous to write_state.F
1405    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1406      analogous to the cg2d-related output.
1407    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1408      so that writing to internal file fn (with length 512) fails.
1409    checkpoint50d_pre
1410    
1411    checkpoint50c_post
1412    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1413    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1414    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1415    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1416    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1417    
1418    checkpoint50c_pre
1419    Merging from release1_p13:
1420    o bug fix for pkg/seaice dynamic solver
1421    o Added SEAICE_initialHEFF to pkg/seaice
1422    
1423    checkpoint50b_post
1424    o store u*,v* in gU,V instead of in guNm1,gvNm1
1425    o in order to put the momForcing out of the Adams-Bashforth:
1426      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1427      to timestep.F
1428    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1429    o re-generate output for highly sensitive test-exp:
1430       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1431    
1432    checkpoint50b_pre
1433    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1434    o corrected CPP option mismatch in exf_Bulk... functions for case
1435      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1436    
1437    checkpoint50a_post
1438    o Bug fix for merging between c50 and KPP.
1439      ikey was passed from thermodynamics to kpp_calc via
1440      common block rather than being recomputed in kpp_calc,
1441      in contradiction with new key itdkey.
1442      New key ikppkey created, and tamc.h headers updated.
1443    
1444    checkpoint50
1445    - 2nd step of merge with ecco-branch:
1446      merge changes in ecco-branch back into main trunk
1447    - bug fix in find_alpha
1448    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1449    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1450    - merged some sliced AD support routines
1451    
1452    checkpoint49
1453    merged from ecco-branch:
1454    o exf:
1455      - Enable initialisation of forcing fields to constant
1456        (runtime) values.
1457      - in exf_getffields.F
1458        Reduce i-/j-loop to interior domain, discarding overlaps.
1459        That also fixes wrong TAF-key computations for key_1, key_2
1460        with bulf formulae.
1461      - exf_init.F modify #ifdef for exf_init_evap
1462      - exf_getffieldrec.F, ctrl_getrec.F
1463        The following INT-usages are not safe:
1464          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1465          fldcount = int(fldsecs/fldperiod) + 1
1466        and were modified.
1467    o autodiff: checkpoint_lev...
1468      - updated storing for bulk formulae (some arrays were missing)
1469      - added state for seaice package
1470      - synchronized with main branch
1471    o DIVA:
1472      Modif.s in
1473      - the_main_loop.F
1474      - the_model_main.F
1475      and added cost_final_restore.F cost_final_store.F
1476      o With these changes, it is possible to fully separate
1477        the first forward run to compute the cost function (mdthe_main_loop)
1478        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1479        into separate model executions.
1480        This enables better tuning of DIVA to given queue sizes.
1481      o Loss of cost function value in consecutive DIVA runs is
1482        fixed by storing to 'costfinal' file.
1483      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1484        beginning/end of adjoint integration is accounted for.
1485      The current changes apply to TAF-1.4.26.
1486      TAF has one remaining bug, requiring one manual change
1487      (see MITgcm manual).
1488    o cal: synchronized between MAIN and ecco-branch
1489    
1490    checkpoint48i_post
1491    o Changes to restore differentiability of code w.r.t. previous tag
1492      (mostly adding new routines to make list and replacing
1493      pressure by totPhiHyd).
1494    o Updated and merged grdchk package
1495      - has both ADM and TLM checks
1496      - works for single- and multi-proc.
1497      - output cleaned
1498      - worked successfully for parallel DIVA
1499    o genmake:
1500      - Adding -platform=SP4
1501      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1502    o Modif. for DIVA:
1503      ctrl_unpack should not be called in intermediate DIVA interval.
1504      (similar thing would apply for active files such as
1505      tbar, sbar, psbar, which should not be reinitialised;
1506      only relevant for ecco-branch)
1507    
1508    checkpoint48h_post
1509    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1510    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1511    o Added SEAICE_initialHEFF to pkg/seaice
1512    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1513    
1514    checkpoint48g_post
1515    --- EOS:
1516    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1517      store total Potential in totPhyHyd for diagnostics & EOS.
1518    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1519    --- Pressure/geopotential gradient:
1520    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1521    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1522      ( changes results of global_ocean_pressure )
1523    o NLFS + z-coord.: add eta*Rho' contribution.
1524    o accurate phiHyd when using interface-W at the middle between 2 centers
1525     ( changes results of ideal_2D_oce )
1526    o includes r* 2nd term in potential gradient.
1527    
1528    checkpoint48f_post
1529    Merging from release1_p12:
1530    o Modifications for using pkg/exf with pkg/seaice
1531      - improved description of the various forcing configurations
1532      - added basic radiation bulk formulae to pkg/exf
1533      - units/sign fix for evap computation in exf_getffields.F
1534      - updated verification/global_with_exf/results/output.txt
1535    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1536      (SBO) core products, including oceanic mass, center-of-mass,
1537      angular, and bottom pressure (see pkg/sbo/README.sbo).
1538    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1539      to avoid negative values in shallow regions.
1540      - updated verification/natl_box/results/output.txt
1541      - updated verification/lab_sea/results/output.txt
1542    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1543    o Added useSingleCpuIO option (see PARAMS.h).
1544    o Updated useSingleCpuIO option in mdsio_writefield.F to
1545      work with multi-field files, e.g., for single-file pickup.
1546    o pkg/seaice:
1547      - bug fix in growth.F: QNET for no shortwave case
1548      - added HeffFile for specifying initial sea-ice thickness
1549      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1550    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1551      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1552    o pkg/seaice:
1553      - adjoint-friendly modifications
1554      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1555    
1556    checkpoint48e_post
1557    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1558    o dynamics: change definition of computational domain & adapt mom_fluxform
1559      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1560    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1561        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1562        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1563        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1564        inverted_barometer solid-body.cs-32x32x1
1565      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1566    
1567    checkpoint48d_post
1568    o in preparation for r*:
1569     a) use pre-computed gradient of hydrostatic potential:
1570        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1571     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1572        => affects results of glob_oce_pressure (different truncation error)  
1573      update output.txt of ideal_2D_oce & global_ocean_pressure
1574    
1575    checkpoint48d_pre
1576    o in preparation for r*:
1577      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1578      pass the 2 comp. of the grad. as arguments to momentum S/R.
1579      but for the moment, only used if it does not change the results.
1580    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1581    
1582    checkpoint48c_post
1583    Modifications in treatment of initial flux forcing controls
1584    to avoid extra storing of flux fields.
1585    
1586    checkpoint48c_pre
1587    o Added tidal_basin_2d experiment (currently 1D!)
1588    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1589    
1590  checkpoint48b_post  checkpoint48b_post
1591  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
1592   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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