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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.484 by jmc, Sat May 14 21:15:47 2005 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/diagnostics: change output frequency, now in seconds (instead
8      of Nb of iterations). This requires to change data.diagnostics.
9    checkpoint57h_pre
10    
11    o in mnc, let the user create the output dir if both mnc_outdir_date
12      and mnc_outdir_num are false
13    o add fflags() to pkg/diagnostics which allows one to specify, on a
14      per-file basis, the file precision [default behavior is unchanged]
15    o added diagnostics to pkg/kpp, including computation of mixed layer
16      depth based on a temperature/density criterion
17    o updated verification/natl_box to test the new pkg/kpp diagnostics
18    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
19    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
20    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
21      not mnc -- this mistake was found by JMC and is now corrected
22    
23    checkpoint57g_post
24    o add Adams-Bashforth 3rd Order time stepping:
25      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
26      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
27    checkpoint57g_pre
28    
29    o make lambda[Theta,Salt]ClimRelax spatially varying
30      (default remains spatially uniform constant based on tau)
31    o added new control variables
32      * init. uVel, vVel, etanN
33      * lambda[Theta,Salt]ClimRelax
34    o separate masks used for ctrl_pack/unpack 'from write_grid' output
35      (suggested by G. Forget)
36    
37    checkpoint57f_post
38    o add parameter "baseTime" = model base time = time at iteration zero
39      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
40      account for baseTime shift
41    o move Coriolis arrays from PARAMS.h to GRID.h
42    checkpoint57f_pre
43    
44    o mnc-ifying the seaice package
45    o introduced an alternative length scale calculation for use in the limiting
46      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
47    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
48    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
49      as well as grad(vort3).  Made it compatible with both approximate form
50      for the cubed sphere and full form of these gradients.  Added flag
51      useFullLeith to select between approximate and full form.  
52    o add "d0" in getcon.F to reduce differences between compilers/platforms
53      update output.txt of exp. fizhi-gridalt-hs
54    o change port_rand funtion to allow to set the seed.
55    o fix obscure MNC bug involving conversion between reals and integers
56      - it caused no problems with certain (eg. gcc, ifc) compilers but the
57        new version is now more standards-compliant
58    o adjoint-related modifications
59      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
60      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
61      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
62    
63    checkpoint57e_post
64    o Adding eddy stress controls a la Ferreira et al.
65    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
66    
67    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
68      update output.txt of exp. fizhi-gridalt-hs
69    o add more "Z" dimensions and associated coordinate vars to MNC
70    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
71    o parameter calendarDumps: when set, approximate months (30-31 days) and years
72      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
73      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
74      months and years.  Requires pkg/cal.
75    o diagnostics: add pickup functionality
76      - off by default for backwards compatibility
77      - current version only uses MDSIO -- MNC will be added
78    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
79    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
80    
81    checkpoint57d_post
82    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
83    o modify verification/ideal_2D_oce so that it tests the creation of mnc
84      output from the diagnostics package
85    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
86    o make genmake2 more portable by using ".$FS" instead of ".f" for more
87      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
88    o add coordinate variables to the MNC output from the diagnostics package
89    o change MNC-flags default value: true when useMNC=TRUE
90    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
91      the ability (off by default) to read the grid information using MNC
92    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
93    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
94    o do snap-shot diagnostics at the middle of the time-interval (instead of
95      at the end).
96    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
97      new test for AIM with thSIce + slab-ocean
98    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
99    o move state variable diagnostics to the beginning of the time step ;
100      (note: still needs some work specially for snap-shot diagnostics)
101      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
102    
103    checkpoint57c_post
104    o Change testing option (-ieee) to get closer agreement between g77 & ifort
105    o generate new output.txt files on faulks with g77 & the new -ieee option
106    checkpoint57c_pre
107    
108    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
109      update output.txt of exp. global_ocean.90x40x15
110    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
111      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
112    o add saltFlux(+File) forcing capability with periodicExternalForcing
113    o allow to use pkg diagnostics for GM-Redi & ThSIce output
114    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
115    o improvements for the MNC output from DIAGNOSTICS:
116      - correct handling of the unlimitied dimension
117      - all dims now have associated coordinate variables
118      - variables located at U, V, and Corner ("Z") points are now written
119        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
120        *all* data points are output
121    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
122    o added pkg/seaice/seaice_monitor.F
123    o mdsio_readfield.F can now read files visible only to master MPI process.
124    o pkg/seaice: some test code for ice-modified ocean stress
125    o exf_getffields interpolation defaults to bilinear for all scalar forcing
126      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
127      spurious negative numbers for precipitation and humidity.  Will cause
128      some small numerical differences for integrations using pkg/exf/exf_interp.F.
129    o pkg/ctrl/
130      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
131        May be enabled via doPackDiag
132      *  introduce z-scaling of
133         + gradient (doZscalePack) and
134         + control (doZscaleUnpack)
135    o pkg/mdsio/
136      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
137      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
138    
139    checkpoint57b_post
140    o simplify options in diagnostics_fill arguments (remove weird combinations)
141    o fix MNC coordinate variables so that they now contain per-face index
142      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
143      general, EXCH2 grids are only aligned to a "local" coordinate system
144    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
145    o Implement instantaneous output within pkg diagnostics:
146      setting a negative frequency in data.diagnostics produces
147     "snap-shot" output (as opposed to time-average if freq > 0)
148    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
149      NOTE: change ptracer diagnostics name: use 2 characters to work with
150            more than 9 tracers. Add also diagnostics of advect & diffus flux.
151    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
152      becomes the coordinate variable for the 'T' dimension
153    o add CF-style coordinate variables to MNC
154      - just a first cut:  numbers are meaningless on the cubesphere and
155        missing along the T axis but otherwise it works!
156    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
157    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
158    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
159      this is based directly on what the model compute, so that the content of
160      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
161    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
162    o clean up build options files for SunOS, in particular
163      - remove -traditional from xmakedepend
164      - change -xarch=v9 to -xarch=native for f77
165      - restore use of make (not gmake)
166      - add CC=gcc if using g77
167    o changes per discussion of AM, JMC, & EH3 today:
168      - move redundant "grid" variables out of "state" -- in preparation of
169        creating proper CF-style coordinate variables and in recognition
170        that any/all grid variables can be easily copied (eg. w/NCO) from
171        the grid files into any of the other NetCDF files
172      - *always* output grid variables with MDSIO (this will eventually be
173        changed)
174      - output MNC grid file if useMNC is true
175    o every instance of _END_MASTER() has been found and replaced with
176      _END_MASTER( myThid ) in order to satisfy certain picky Sun
177      preprocessors
178    o re-arrange diagnostics pkg initialisation:
179     - allow each package to extend the available diagnostics list
180     - add some checking and fix small problems (multi-threaded, ...)
181     - new S/R diagnostics_fill (replace fill_diagnostics):
182       look through the short list of active diag. (instead of the long list)
183       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
184    
185    checkpoint57a_post
186    o this set of changes restores TAMC compatibility
187      tested for global_ocean.90x40x15 adjoint on trough
188      (what a pain)
189    
190    checkpoint57a_pre
191    o some modifs in tools/build_options for sunos
192    o call ctrl_pack for ctrl at end for optimcycle=0
193    
194    checkpoint57
195    o add horizontal bi-harmonic viscosity for vertical velocity
196      - new parameter viscA4W (defaults to viscA4)
197      - affects only non-hydrostatic code
198      - to be done: no-slip lateral boundary conditions
199    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
200    o implement Implicit Vertical advection for pTracers
201    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
202      (implemented also for implicit vertical diffusion & advection)
203    o OBCS: extend application of tracer open boundary conditions
204      to a strip beyond the boundary of width Olx/Oly
205    o add call monitor to TAF set of required calls (flow directives)
206      and include in natl_box_adjoint
207    o untangle a few ifdefs related to cost, ctrl, autodiff
208      untangel a few ALLOW_ECCO_OPTIMIZATION
209    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
210      (theta2, salt2 in ecco_cost_weights)
211    
212    checkpoint56c_post
213    o OBCS as control variables
214      - update ctrl_ad_diff.list, obcs_ad_diff.list
215      - remove balance of obcs controls from default
216      - fix index bug nobcs in ctrl_init
217      - fix dummy fields filen in ctrl_pack
218      - add dummy weights for obcs
219    o lsopt: comment out fort.94 output
220    o optim:
221      - remove unnecessary header files
222      - adjusted namelists
223      - add xerbla.F to Makefile
224    o exf:
225      - multiple modifications of exf_check_range
226      - unit change in exf_init_runoff from [m/year] to [m/s]
227    o mdsio:
228      - i/o-vector change debugLevel from debLevA to debLevB
229    
230    checkpoint56b_post
231    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
232      is called from DO_THE_MODEL_IO
233      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
234      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
235      - clean up PTRACERS_WRITE_TIMEAVE a little
236    o add another verification experiment that tests both the cfc-pkg and
237      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
238      reactive tendencies treated inline with regular timestepping
239    o testreport previously did a lousy job of comparing small numbers, so
240      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
241      implemented in the little c-progam tmp_cmpnum.c which is embedded in
242      testreport.
243    o ptracers_monitor: bug fix for MPI
244    
245    checkpoint56a_post
246    o GCHEM: finish reorganizating the package
247      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
248        (introduces another 3D-array for each passive tracer, but only if
249        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
250        gchemTendency is not needed because the timestep is done separately)
251      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
252      - GCHEM is now---more or less cleanly---separate from PTRACERS
253      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
254        so clear to me how that should be done in a general way.
255    o CFC: improve formatting of output in CFC_ATMOS
256    o PTRACERS:
257      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
258        that ALL experiments with ptracers enable can be checked. This makes
259        GCHEM_MONITOR obsolete.
260      - include a runtime parameter PTRACERS_monitorFreq that defaults to
261        monitorFreq
262      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
263    o add PTRACERS (PTR0[1-5]) to testreport output
264    o exf_check_range:
265      * default changed to .TRUE.
266      * will check values for niter0 if debLevA, every timestep if debLevB
267      * STOP in exf_check_range if 'out of range'
268      * range chosen generous to allow for potential extema
269      TBD: a version with stricter range
270           permitted range would be runtime parameters
271    o GMredi:
272      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
273      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
274      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
275    o GCHEM:
276      - move call to GCHEM_FORCING_SEP, so that it is now called before
277        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
278      - introduced a useGCHEM runtime flag and applied it everywhere.
279      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
280        this flag is now only visible within GCHEM-pkg routines.
281      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
282        be replaced by a 3D array that is computed before thermodynamics; for
283        this, the tracer ID iTracer had to be included into the parameter list
284        of ptracers_forcing
285      - set up forward_step to call gchem_forcing, that will replace
286        gchem_forcing_int in ptracers_forcing
287      - cleaning up
288    o small cleaning of exch2: remove files that are also in eesupp/src
289    
290    checkpoint56
291    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
292    o mnc: cleanup "full" files--fixes out-of-memory problem
293    o ECCO-GODAE
294      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
295      * fully merged and updated from SIO code
296        windstress sign change affects
297        - exf_inscal_[u/v]stress
298        - sign of xx_tau[u/v] adjustments
299        - signs in cost_scat
300      * ctrl_get_gen: avoid update of tau[u/v] for first few days
301      * natl_box_adjoint updated and compressed
302      * 2-level checkpoint switch added
303        (tested in EXP. 1 of natl_box_adjoint)
304      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
305    o SVD
306      * first complete, non-hacked version for SVD calculations
307      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
308        performed via direct access files admtlm_vector.it????
309        (via ctrl_[un]pack)
310      * optimcycle is used for ARPACK iteration counter
311        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
312      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
313        and add linear transforms where necessary
314      * controls are initial/final SST, SSS (can be extended; need to check
315        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
316    o mdsio: filename info to both stderr, stdout
317    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
318      from sign change
319    
320    checkpoint55j_post
321    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
322      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
323    o add consistent build directories and .cvsignore files to verification
324    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
325    o make all subroutines 30 or less characters in length for certain older
326      compilers to work (a thorough search only turns up two routines in
327      pkg/ptracers)
328    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
329      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
330    
331    checkpoint55i_post
332    o change arrays for total vertical diffusivity (2.D if explicit,
333      3.D if implicit) ; each ptracer uses its own background value.
334    o added mnc/NetCDF output capability to ocn_compon_interf
335      - added bits to verification/cpl_aim+ocn so that it can run on
336        ITRDA and other clusters without the mpirun "-wd" option
337    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
338      configuration
339    o give MNC the ability to create additional files rather than
340      exceeding a specified file size limit "MNC_MAX_FILESIZE"
341      - the default is just less than 2GB which is a practical limit
342        on many systems
343    o Compute the non-local term using either KPP vertical diffusivity (=default)
344       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
345    
346    checkpoint55h_post
347    o add verification test "vermix"
348    o remove all the *_ioinc flags and replace with the single global
349      outputTypesInclusive flag
350    o allow to set a vertical profile of vertical diffusivity for T & S
351    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
352    o useMNC moved from data.mnc to data.pkg
353    
354    checkpoint55g_post
355    o Renaming carbon AD experiments to comply with testreport conventions
356    o Updating adjoint of Held-Suarez hs94.1x64x5
357    o Fixing directives for non-ECCO forward_step, after ECCO directives
358      have been fixed to avoid recomp. of do_oceanic_phys
359      Works well for global_ocean.90x40x15,
360      but recomp. issue remains for carbon
361    o Updating adjoint output for natl_box_adjoint after
362      pkg/ecco has been modified (see taga c55d_post)
363    
364    checkpoint55f_post
365    o rename to timeave_init_fixed
366    
367    checkpoint55e_post
368    o some delicate re-shuffle of store directives to avoid one
369      extra call of do_oceanic_physics
370      affects ecco_the_main_loop.F, do_oceanic_physics.F
371      checkpoint_lev1_directives.h
372    o NB: this may break global_ocean adjoint temporarily,
373      but it is clear how to fix it. Will do later, need this now.
374    
375    checkpoint55d_post
376    o ECCO specific cost function terms (up-to-date with 1x1 runs)
377    o ecco_cost_weights is modified to 1x1 runs
378    o modifs to allow observations to be read in as
379      single file or yearly files
380    o enable to read exf forcing fields as either
381      single file or yearly files (flag useExfYearlyFields)
382    checkpoint55d_pre
383    
384    o switch between 2-level and 3-level checkpointing
385    o add ability of MNC to write local and "partial" (eg. 2D slices where
386      the full 3D field is never actually stored) arrays to NetCDF files
387      with the correct (that is, the complete multi-dimensional) set of
388      array indicies
389      - used in mom_vecinv() to write the diagFreq output
390      - tested (demonstrated) in verification/aim.5l_cs
391    o further mnc-ification
392      - add verification/lab_sea to the list with mnc setups
393      - fix undefined mnc v-names in cd_code
394      - add kpp to mnc output (both snapshot and timeave)
395    o non-hydrostatic code
396      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
397        in calc_gw.F
398      - defaults to viscAh
399      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
400        friction or Leith) in non-hydrostatic mode, as long as there is
401        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
402    o pkg/cost
403      extend simple cost functions to treat time mean quantities
404      (T,U,V) via cost_accumulate_state from cost_tile
405    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
406        be 2 times larger than the minimum size the advection scheme requires.
407        now get a perfect conservation of salt in advect_cs test-exp (updated)
408    o GGL90 (Gaspar's TKE mixed layer)
409      - add horizontal diffusion of TKE, requires exchanges in
410        do_fields_blocking_exchanges, horizontal diffusivity is zero by
411        default. In OPA there is no horizontal diffusion of TKE but the
412        mixing coefficients are computed from a horizontal average of TKE of
413        6 points or so. I think that diffusion has a little more physical
414        justification.
415      - clean up ggl90_calc in the hope of reducing memory usage (this hope
416        was in vain)
417      - mask tke-variable in ggl90_init
418    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
419    o fix biharmonic diffusion on CS-grid.
420    o more obcs stuff
421      - added obcs_external_fields_load as an alternative to the EXF-pkg option
422        for reading boundary values. This routine is called from
423        obcs_prescribe_read
424      - updated obcs_check
425      - changed sponge layer relaxation parameter units for days to seconds
426      - turned off sponge layer by default
427      - changed argument list of OBCS_CALC to myTime+deltaTclock
428      - fixed about 35 bugs in obcs_external_fields_load
429    
430    checkpoint55c_post
431    o obcs stuff
432      - new runtime flags useOBCSprescribe, useOBCSbalance
433      - re-arranged obcs_calc
434      - moved exf_getobcs to obcs_prescibe_read
435        obcs_prescibe_read is called after ORLANSKI stuff
436        and independent of it (executable can contain all).
437      - updated obcs_check
438      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
439        These may be necessary only if tangential velocities are
440        prescribed at OB, not sure, needs testing.
441    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
442      which simplifies the calls and passes the ifc check-bounds test
443    
444    checkpoint55b_post
445    o add a 2D scalar, Z location, exchange_2 routine.
446    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
447      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
448      affects advect_cs results (for the wrong reason): update output.txt
449    o use a more standard discretization for biharmonic viscosity ;
450     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
451      affects results of dome set-up: update output.txt
452    o fix gad_advection.F (CubedSphere part), back to version 1.23
453    o fix bug in mom_vi_del2uv.F (CubedSphere part).
454    
455    checkpoint55a_post
456    o merged code to
457      * prescribe/read time-dependent open boundaries
458        (works in conjunction with exf, cal)
459      * sponge layer code for open boundaries
460      * each boundary N/S/E/W now has its own CPP option
461        (healthy for the adjoint)
462    
463    checkpoint55
464    o up-to-date adjoint of previous breaks
465      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
466      - global_ocean_ebm: adjoint still needs fix (TLM ok)
467      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
468      - carbon: * remove tr1-related adjoint verification
469                * add ptracer as control variable
470    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
471      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
472    
473    checkpoint54f_post
474    o in verification/carbin/ remove experiment related to
475      ALLOW_PASSIVE_TRACER (array tr1 etc)
476      code_ad/ input_ad/ results_ad
477    
478    o add two new packages
479      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
480        + subject to optimization (memory)
481      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
482        + subject to reordering (many GOTOs in the original code)
483        + so far opps is called for every (i,j) point, and then operates in
484          the vertical; one may want to reorder the scheme in order operate in
485          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
486          fields)
487    o overhaul of IO so that we now have flags for MDSIO and/or MNC
488      - all verification tests compile and run with linux_ia32_g77
489      - defaults are compatible with current input files--nothing
490        should change if you were not previously using MNC
491      - MNC output has been added in numerous places (eg. timeave)
492        but there are still a few writes not yet do-able with MNC
493        (this is in progress)
494      - flags now allow for either/or/both use of MDSIO and MNC and
495        documentation will soon follow
496      - numerous small formatting cleanups for ProTeX
497    o add version info (via BUILD_INFO.h) to MNC and stdout
498    
499    checkpoint54e_post
500    o add two new packages
501      - pp81 (Packanowski and Philander, 1981), Richardson number and
502        stratification dependent mixing
503      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
504      - these scheme operate in a similar manner as KPP (without ghat, of
505        course), however there is only one diffusivity that is used for both
506        temperature and salinity (and passive tracers)ç
507    o add offline package
508    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
509      provided by Stephanie Dutkiewicz
510    o genmake2: add ability to search for C compilers and cleanup test output
511      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
512    
513    checkpoint54d_post
514    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
515    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
516      leading to additional shift by 5 days each year of integration
517       (i.e. leading to considerable offset over the years)
518    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
519    o start with no AB and no initial filtering (staggerTimeStep):
520      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
521    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
522      (external loading & cpl import/export stay in forward_step.F)
523    o update coupling interface to work with new staggerTimeStep
524    o change MDSIO ptracers_pickup.
525    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
526    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
527    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
528    
529    checkpoint54c_post
530    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
531      this affects (truncation error) output.txt of test-exp:
532       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
533    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
534    o change Qnet to always be the net heat flux, (+upward).
535      affects (truncation error) output of natl_box exp.: updated
536    o define the max number of passive tracers in PTRACERS_SIZE.h
537    o start to test mnc routinely in exp0
538    o add sea-ice loading (sIceLoad) as a new forcing field.
539    
540    checkpoint54b_post
541    o add testreport "-j JOBS" option for parallel builds (tested and pretty
542       impressive on Altix and Opteron systems)
543    o diagnostics can now write NetCDF files through the mnc package
544    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
545    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
546    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
547      affects (truncation error) output of lab_sea & natl_box exp.: updated
548    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
549    
550    checkpoint54a_post
551    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
552    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
553    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
554    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
555      + internal_wave (shift in writing cg2d_ini_res)
556    checkpoint54a_pre
557    
558    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
559      - modified verification/lab_sea and natl_box_adjoint accordingly
560    
561    checkpoint54
562    checkpoint53g_post
563    o prepare splitting of thermodynamics: store convect.counter in common block
564    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
565      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
566    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
567    o new parameter "nShapS": allow to treat differently S from T (nShapT)
568    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
569    o restore adjointability
570    
571    checkpoint53f_post
572    o modifications that affect AIM experiment results (update output.txt):
573      - no advection of S at top interface Nr (pkg/generic_advdiff)
574      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
575    o AIM pkg:
576      - include stability function into surf.Flux derivative relative to Tsurf
577      - calculate clear-sky radiation & surface temp. change (for diagnostics)
578    
579    checkpoint53e_post
580    o merged cylindrical coord configuration
581    o added rotating_tank experiment
582    checkpoint53e_pre
583    
584    checkpoint53d_post
585    o faulks upgraded: re-generate output.txt that have changed:
586       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
587    o Added Bryan and Lewis, 1979, vertical diffusivity profile
588    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
589    o added Sadourny discretization of Coriolis
590      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
591      - re-enabled use of omega3 (useAbsVorticity)
592    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
593      vector-invariant equations
594      - note: does *NOT* yet use same variable visc. for no-slip BC's.
595    o recoded the lateral boundary conditions for non-hydrostatic w, this time
596      hopefully without new bugs
597      - still to do: biharmonic friction for non-hydrostatic w
598    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
599    o regenerated output for global_ocean_ebm (using -ieee)
600    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
601      of mom_common/
602      - simple re-arrangement of instructions within computing loop
603    checkpoint53d_pre
604    
605    checkpoint53c_post
606    o new version of coupler for AIM+thSIce and Ocean models
607     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
608     - land: change Evaporation of snow
609     - aim with thSIce: fix bug in snow-precip.
610    o changes to calc_gw.F
611     - bug fix for w^2 term near the bottom boundary
612     - (hopefully) improve the lateral slip boundary condtions for use with
613        partial/looped cells
614      - because the bug fix changes two verification experiments anyway (exp5
615        and plume on slope), change the lateral boundary condition from half slip
616        to the value of no_slip_sides
617    o ebm package wasnt quite up to the parallel task. Fixed that.
618    o Adjoint of EBM package + verification
619      * TLM OK
620      * ADM not sufficient accuracy yet (needs further testing)
621    
622    checkpoint53b_post
623    o Commiting new energy balance model to repository
624      * package is pkg/ebm
625      * verif. is verification/global_ocean_ebm
626      * references are in ebm_driver.F
627    C      * X. Wang, P. Stone and J. Marotzke, 1999:
628    C        Global thermohaline circulation. Part I:
629    C        Sensitivity to atmospheric moisture transport.
630    C        J. Climate 12(1), 71-82
631    C      * X. Wang, P. Stone and J. Marotzke, 1999:
632    C        Global thermohaline circulation. Part II:
633    C        Sensitivity with interactive transport.
634    C        J. Climate 12(1), 83-91
635    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
636    C        Destabilization of the thermohaline circulation
637    C        by atmospheric eddy transports.
638    C        J. Climate 7(12), 1870-1882
639    o Will need long integration testing.
640    checkpoint53b_pre
641    
642    o created pkg/mom_common in preparation for variable viscosity code
643    o renamed and split ini_mnc_io
644    o pkg/land: only liquid water can diffuse or run-off
645    o AIM using land: soil wetness availability account for snow
646    o added printMapIncludesZeros to EEPARMS namelist
647    
648    checkpoint53a_post
649    o restore TAMC compatiility for exf_constants.h
650      (no usage of _d in .h)
651    o Additional storing in KPP in an attempt to fix
652      TAMC problem with adjoint of KPP code.
653      (no success...)
654      Identical code works fine with TAF.
655    o Fixed verification/natl_box_adjoint experiments.
656      Initial conditions for Experiments 4 and 5 are now
657      set to "SEAICE_initialHEFF=0", which is more reasonable,
658      and hence gives results closer to that of Experiment 2.
659      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
660    
661    checkpoint53
662    o stable checkpoint with up to date adjoint
663      TLM tests only run for 1st grdchk at the moment. Its unclear if
664      this is a code problem or a problem with resetting code for g_
665      variables that is being autogenerated wrong.
666      Otherwise:
667       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
668       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
669         are both still in chaos following their security messes.
670    
671    checkpoint52n_post
672    o various build (mostly genmake2) changes including:
673      - ability to build/run more easily within Cygwin and MacOS X
674      - more complicated Makefiles with a stronger dependence on Gnu Make
675    o pkg/seaice modifications
676      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
677        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
678        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
679      - changed proxy for geostrophic velocity and updated
680        verification/lab_sea/results/* accordingly
681      - removed ADI dynamic solver from pkg/seaice
682      - replaced all occurrences of 1/CSTICE or 1/CSUICE
683        they caused a segmentation fault under certain circumstances
684      - removed unused field WATR
685    o bug fix in exf-package:
686      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
687         now reflect that.
688    o small fixes in the cal-package:
689      - set reference date to first of January for the 'model'-calendar
690      - failing of cal_CheckDate in cal_FullDate now actually results in a
691        warning
692    o small modifications in exf-package to increase flexibility:
693      - change climtempfreeze from a constant to a runtime parameter that
694        is specified in data.exf_clim (default = -1.9)
695      - introduce runtime parameter windstressmax (default = 2.0) that is
696        specified in data.exf
697    o fix in pkg/thsice:
698      - update Evap (Tsf changes) to be consistent with Latent heat flux
699      - maintain snow precipitation unchanged (even if Tsf >=0).
700     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
701    
702    checkpoint52m_post
703    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
704      this does not change any of the results, because myIter=0 in swfrac always
705      lead to jwtype=2 (the default anyway), but the call makes little sense
706      as a default
707    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
708    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
709      atmospheric model (AIM) to use it ; add a "slab ocean" component.
710    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
711    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
712    o extending useSingleCpuIO option to work with new exch2 I/O format
713      - old-style, missing-tile I/O is still accessible by defining CPP
714        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
715    o monitor package can write to NetCDF files and/or STDOUT
716    o fix re-definition bug in MNC_GRID_INIT_ALL()
717    o doc/api_reference added
718      - a framework for building an API Reference Manual using all
719        the "protex" comments embedded in the code
720      - see pkg/generic_advdiff, pkg/mnc for examples
721    o MNC:
722      - make myThid the last argument for all subroutines
723      - new default for the grid files: NO halos
724      - add useMNC and other run-time flags
725      - separate per-file-group handling of the unlimited dimension
726      - early initialization of MNC w/ flags read at the eeboot stage
727        and lookup tables set in initialize_fixed
728      - write all MNC output to a freshly-created directory
729    o thermodynamics sea-ice (thsice) is now tested with testreport.
730    o test exp. advect_cs: use the standard cs32 grid ; update output.
731    o Added functionality to grdchk:
732      pick global i,j,k position (or nearest wet) where to perform check.
733    
734    checkpoint52l_post
735    o new land formulation:
736      a) use ground enthalpy as prognostic variable to ensure exact
737         energy conservation.
738      b) account for water temperature and for latent heat of freezing
739         in all processes (rain, run-off, ground storage)
740      c) compute surface and ground temperature implicitly.
741    o aim_v23 modification for new land model:
742      a) Treat separately land / ocean / sea-ice surface fluxes
743         to allow implicit computation of land & sea-ice surface temp.
744      b) add snow precipitation.
745    checkpoint52l_pre
746    
747    o fix problem (when 1 tile is empty) in min/max monitor.
748    o fix bug in timeAve (u,vZetatave in common block)
749    o no restoring terms under ice for pkg/seaice
750    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
751    o bug fix for pkg/seaice pickups
752    o change MNC call locations and add coordinate attributes
753    o mask vorticity at the corner ; affects global_ocean.cs output
754    o fix ini_curvilinear_grid ; test CS experiments with mpi
755    o aim.5l_cs: modify sea-ice fraction input file ; update output
756    o exf: Adding simple range check routine for exf fields after read
757    
758    checkpoint52k_post
759    o removed top-level directory "diags"
760      - we migrated these functions to pkg/timeave a long time ago
761    o fixed bug introduced in pkg/monitor
762    o accuracy ctrlprec = 32 insuffient for gradient checks using
763      averaged fields (I/O via cost_averages)
764      -> use ctrl.h in active_file*.F to control I/O precision.
765    o paramter list of CALL ADTHE_MAIN_LOOP
766    o added initial do_the_model_io to ecco
767    o set all ...Freq to zero after cost_final
768      taveFreq, dumpFreq, pChkptFreq
769    o MAIN and ECCO differentiability restored
770    
771    checkpoint52j_post
772    o fix nchklev in tamc.h for global_ocean...
773    o Bringing flow and store directives up-to-date
774    o Really weird thing!
775      call do_the_model_io from the_main_loop with parameters
776      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
777      TAF places a faulty re-call of initialise_varia
778      after cost_final call which should not be there!
779    checkpoint52j_pre
780    
781    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
782      error messages
783    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
784    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
785      debug output
786    o modfied mdsio_writefield.F to handle non-global files under exch2
787    o update AIM Cubed-Sphere exp (aim.5l_cs):
788      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
789    o update AIM Equatorial Channel exp:
790      use standard aim_v23 pkg and change the SST fields to be more realistic.
791    o globalFile now works with exch2
792    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
793      mon_vort3.F to make exch2 friendly with >1 tile per cube face
794    o limit timeave output for hi-res integrations
795    
796    checkpoint52i_post
797    o removed CPP_EEOPTIONS.h from verification/*/code
798    o updated the tiling for global_ocean_pressure
799    checkpoint52i_pre
800    
801    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
802      the old pkg/aim).
803    
804    checkpoint52h_pre
805    o shortened offending lines in exch2_send_rx?.template
806    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
807    o genmake2: add build & execute test for NetCDF code
808    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
809      old grid files, moved CPP_EEMACROS.h to pkg/exch2
810    o added useSingleCPUIO flag to monitor.F and mon_out.F
811    o added temporary hack for sea-ice dynamics on the cube:
812      metric terms are ignored and it is assumed that
813      there is no sea-ice on cube faces 1, 2, 4, and 5.
814    
815    checkpoint52f_post
816    o added exch2 cube routines to pkg/exch2
817    o modified hs94.cs-32x32x5 to use it
818    o added new grid files to hs94.cs-32x32x5
819    checkpoint52f_pre
820    
821    checkpoint52e_post
822    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
823      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
824    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
825      to work with implicit vertical advection and AB ;
826    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
827    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
828     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
829    checkpoint52e_pre
830    
831    o fix bug in impldiff when Nr=1 or Nr=2.
832    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
833    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
834    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
835      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
836    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
837    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
838    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
839    
840    checkpoint52d_post
841    o re-tiled many expts to allow comparison in multi-processor mode
842      - updated output accordingly
843      - changed hs94.128x64x5 to use intial T from file rather than use the
844        random number generator
845    o add infrastructure in model routines for fizhi and gridalt packages
846    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
847    o changes to permit hi-res, cubed-sphere, configuration
848      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
849      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
850      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
851        of surface winds for the cube
852      (A verification experiment, based on global_ocean.cs32x15, but with
853       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
854       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
855       complete with example surface forcing files and matlab scripts to look
856       at the output and compare it with that of global_ocean.cs32x15.)
857    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
858       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
859       to conform to the common rule.
860    o check-in the first version of the coupler + interfaces for multi-components
861       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
862       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
863       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
864       - ocean and atmos. share the same horizontal grid (no interpolation).
865       - exchanges between component and coupler is done in forward_step
866    o new verification experiment, cpl_aim+ocn:
867       coupled ocean - AIM atmosphere on cs32 grid.
868    
869    checkpoint52d_pre
870    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
871    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
872    
873    checkpoint52c_post
874    o Fixing OPTIONS files for use of exf:
875      - ALLOW_ECCO not needed
876      - ECCO_CPPOPTIONS.h should not be included from
877        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
878        as has been the case in the past
879      - All cal/exf related options are currently set in
880        single header file. Should remain so until we
881        agree on a consistent new policy.
882    o Removed all CPP options for cal package.
883      cal has no more CPP options.
884    o modified STOREs in GAD_ADVECTION
885    o corrected key comp. for passkey
886    
887    checkpoint52b_post
888    o new version: "thsice" of thermodynamic sea-ice pkg:
889     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
890     - modify fluxes but do not change theta directly;
891     - light cleaning of bulk_force pkg (still needed with thsice).
892     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
893       + output_thsice.txt to test thsice & bulk_force pkgs.
894    o put back grid & coriolis monitor output.
895    checkpoint52b_pre
896    
897    o call "do_the_model_io" at the beginning (=> dump initial state)
898    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
899    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
900      (need info on NUMBER_OF_PTRACERS)
901    o missing PTRACERS headers in some routines
902    o default tamc.h in pkg/autodiff supposed to crash
903      to ensure proper customization
904    
905    checkpoint52a_post
906    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
907      - moved surfaceTendencyTice from pkg/seaice to main code
908      - subroutine FREEZE_SURFACE now limits only surface temperature
909        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
910        => new output.txt for global_ocean.cs32x15 & global_with_exf
911      - keep the old version of FREEZE for backward compatibility;
912        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
913      - corresponding modifs for TAF directives
914    o added surface flux output variables to TIMEAVE_STATVARS
915    o time-averaged output for pkg/ptracers
916    o fix problem with ECCO-related divided adjoint
917      snapshot file was missing some ad-variables,
918      but no warning issued by TAF
919    
920    checkpoint52a_pre
921    o some bug fixes for #undef REAL4_IS_SLOW
922    
923    checkpoint52 = ecco_c52_e35
924    o after testing adjoints of checkpoint51u_post
925    
926    checkpoint51u_post
927    o this is the post-merge tag of the ecco-branch
928      (needs another clean checkout and re-testing)
929    o various natl_box_adjoint configs and results
930      but no input fields
931    o obcs adjoint not yet merged!
932    o adding ECCO global 1x1 and 2x2 degree configs
933    o updated/extended some store directives for seaice
934    o pkg/ecco now containes ecco-specific part of cost function
935    o top level routines the_main_loop, forward_step
936      supersede those in model/src/
937      previous input data.cost now in data.ecco
938      (new namelist ecco_cost_nml)
939    o in ctrl/ cleaned some cross-dependencies and updated CPP options
940    
941    checkpoint51t_post
942    o this is the pre-merge tag of the ecco-branch
943    
944    checkpoint51s_post
945    o cleanup: removed various obsolete #define-s
946    o pkg/grdchk
947      - renamed 'ph-grd 3' to 'grad-res'
948      - merged from ecco-branch
949        (remaining bug fixes for obcs gradient checks)
950      - additional high-precision output for testreport
951        (grep for 'precision_grdchk_result')
952    
953    checkpoint51r_post
954    o cleaned up or removed CPP_OPTIONS.h files
955    o updated results for some of the tests to reflect the new
956      optfiles (-ieee: -O0 instead of -O3)
957    
958    checkpoint51q_post
959    o cd_code:
960      - moved cd_scheme.F -> cd_code_scheme.F
961      - separate read_checkpoint from cd_code_ini_vars.F
962      - separated cd_code part from write_checkpoint
963      - updated AD_SOURCE, generated .flow
964      - added CD_CODE_VARS.h to the_main_loop
965      - Moving cd_code specific store dir.s to pkg/cd_code
966    o ctrl package totally restructured
967      - pack/unpack now optional and decoupled from
968        xx_/adxx_ I/O
969      - ctrl_pack/unpack cleaned
970        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
971      - confined inclusion of AD_CONFIG.h to where necessary.
972    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
973    
974    checkpoint51p_post
975    o create initial cd_code package
976      - WARNING: the initialization of fields within packages
977        is broken because INI_FIELDS (where READ_CHECKPOINT is
978        called) is called *before* PACKAGES_INIT_VARIABLES.
979        This seems to be backwards since
980        1) its important to initially zero the entire field including
981           the "halo" region
982        2) zeroing needs to be done *before* reading pickup info
983           and the pickup call might or might not happen in any
984           particular run
985      - this needs an overhaul for R2
986    o cleanup verification/*/code/GMREDI_OPTIONS.h
987    o cleanup testreport
988    
989    checkpoint51o_post
990    o bringing AD-related verif's up to date with genmake2
991      - carbon/
992      - global_ocean.90x40x15/
993      - hs.94.1x64x5/
994      - (front_relax/ )
995    o (more) consistent directory structure for AD-related verif.'s
996    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
997    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
998    o bug fix in find_alpha.F for MDJWF:
999      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1000        change rho -> rho-rhoConst
1001      - replace call find_rho to find_rhonum
1002    o initialisation of rFlx extended to full array (required by TAF)
1003      and shifted to thermodynamics
1004    o removed PTRACERS.h in ptracers routine
1005    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1006    o Correcting initialisations for fVerU, fVerV.
1007    o helping TAF to recognize dependency on kUp for
1008      fVerU, fVerV
1009    o Replacing delZ by delR in pkg/ctrl/
1010    checkpoint51o_pre
1011    
1012    o undid all of cp51 pending some cleanups and discussion
1013    o added the [#include "AD_CONFIG.h"] statement to all files that need
1014       it for adjoint/tl #defines
1015     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1016     o removed tools/genmake since it no longer works
1017    
1018    checkpoint51n_post
1019    o modifications to make FREEZE flux visible to pkg/kpp
1020      - moved surfaceTendencyTice from pkg/seaice to main code
1021      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1022      - subroutine FREEZE now limits only surface temperature
1023        (this means new output.txt for global_ocean.90x40x15,
1024         global_ocean.cs32x15, and global_with_exf)
1025    o added surface flux output variables to TIMEAVE_STATVARS
1026    
1027    checkpoint51n_pre
1028    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1029    o added [#include "AD_CONFIG.h"] to all files that use the following
1030      defines:
1031      - ALLOW_ADJOINT_RUN
1032      - ALLOW_TANGENTLINEAR_RUN
1033      - ALLOW_ECCO_OPTIMIZATION
1034    
1035    checkpoint51m_post
1036    o incorporating changes to get TAMC/TAF working in genmake2
1037      - added new TAMC/TAF targets to the Makefile
1038      - various cleanups related to package handling
1039      - these changes should have no impact on the forward model
1040    
1041    checkpoint51l_post
1042    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1043     - faster algorithm for cal_addtime.F
1044     - higher precision arithmetic, where needed
1045     - pkg/exf *startdate variables changed from calendar date to
1046       model integration time
1047    
1048    checkpoint51l_pre
1049    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1050    o enable to apply restoring on S & T only in a latitude band.
1051    o update output (external_forcing_surf modif. change truncation errors)
1052       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1053    
1054    checkpoint51k_post
1055    o change default to: useNHMTerms=.FALSE.
1056     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1057       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1058     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1059        exp1, ideal_2D_oce
1060     - change data file of oceanic exp (leave the results unchanged for now)
1061       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1062    o set gravitySign automatically according to the vertical coordinate used
1063      (and change sign: back to "logical" value: +1 when R increases downward)
1064    o added an include barrier to the default CPP_OPTIONS.h and
1065      removed the #include "PACKAGES_CONFIG.h" from it
1066    o fix a bug in mom_fluxform (from chk51j_post)
1067    
1068    checkpoint51j_post
1069    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1070    o adjusted some flow directives (dynamics, thermodynamics)
1071    o added cubed-sphere case to test cost function
1072    o heckpoint_lev?_directives.h now include
1073      pkg-specific directives, whenever those are enabled.
1074    o Moving pkg-specific flow directives to corresponding pkg
1075      Moving pkg-specific differentiation list to corresponding pkg
1076      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1077      ---> conventions are
1078           - pkg_ad.flow
1079           - pkg_ad_diff.list
1080           - pkg_ad_check_lev?_dir.h
1081    
1082    checkpoint51i_post
1083    o merge of the branch-genmake2
1084      - knowingly breaks the older genmake
1085      - automatic generation of all ALLOW_${PKG_NAME} defines
1086      - new testreport supersedes older testscript
1087    o large number of package inclusion and header cleanups
1088    checkpoint51i_pre
1089    
1090    o new output for adjoin of global ocean vector invariant
1091    o fix for checkpoint of thermodynamic seaice and bulk_force
1092    o Steph gchem various cleanups
1093    
1094    checkpoint 51h_pre
1095    o fixed some single quotes
1096    o modify gchem pkg to be more versatile
1097    o modifications to clean up dic pkg
1098    o add pkg/cfc
1099    
1100    checkpoint51g_post
1101    o provide links for ARPACK and ADM*TLM
1102    o start removing verification/vero/
1103    o update AD-related stuff
1104      (in particular some IF-statements in model/src/ routines)
1105    o adding to verification/global_ocean.90x40x15/ adjoint of
1106      vector invariant setup
1107    
1108    checkpoint51f_post
1109    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1110    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1111      of tracer Green's fucntions for ocean inversion project.
1112    
1113    checkpoint51f_pre
1114    o Added on-the-fly spatial interpolation capability
1115        "USE_EXF_INTERPOLATION" to pkg/exf.
1116      - This is a temporary Cartesian-grid hack until
1117        the super-duper ESMF coupler becomes available.
1118      - See verification/global_with_exf/README for usage example.
1119      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1120        flags and modified pkg/seaice accordingly.
1121    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1122        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1123        non-local transport term.
1124    
1125    checkpoint51e_post
1126    o pkg/mom_vecinv:
1127      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1128      - add time-ave diagnostic of vorticity advection.
1129    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1130    o atmospheric geopotential: - include water vapor effect;
1131                                - use p^kappa in p* scaling.
1132    o land pkg: read initial state from files.
1133    o AIM : add stratospheric drag in the upper level
1134    
1135    checkpoint51d_post
1136    o change function ILNBLNK (=> last non-blank char.) to return zero
1137      (instead of the string length) when the string. char is empty
1138    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1139    o modif's to restore TAMC compatibility
1140      - avoid "_d" constructs in PARAMETER declarations
1141      - avoid interrupting lines by comment lines
1142    o Use cluster local disks for purely local I/O
1143      vs. globally visible disks needed for ctrl stuff
1144      (merged from ecco-branch)
1145      - new active_file_loc... and mdsio_..._loc routines
1146      - affected packages: autodiff, ctrl, grdchk, mdsio
1147    
1148    checkpoint51c_post
1149    o introducing integer flag debugLevel
1150      - debLevZero: suppress all output
1151      - debLevA: standard
1152      - debLevB: equivalent to current debugMode=.TRUE.
1153    o introducing pathname variable mdsioLocalDir for mdsio
1154      that can be specified at runtime
1155      (relevant for cluster I/O to local disk)
1156    `
1157    >>>checkpoint51b_post
1158    adjoint of ptracers
1159    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1160    o extended state in checkpoint_lev?, etc.
1161    o alternative ctrl/cost with tr1 or ptracer
1162    o new comlev1_bibj_ptracers
1163    o new ptracers.flow
1164    o made ptracers_forcing same as external_forcing_s
1165    o added verification for adjoint with ptracers
1166      - adm. grdchk fail so far
1167      - tlm. grdchk OK
1168      - checked tapelev/comlev recomputations: OK
1169    <<<checkpoint51b_pre
1170    
1171    checkpoint51a_post
1172    o added code for biogeochemistry package
1173      - new pkgs: dic, gchem
1174      - new subroutine in ptracers
1175    o modify code for biogeo packages
1176      - in model/src and pkg/ptracers
1177    
1178    checkpoint51
1179    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1180      - autodiff, ctrl, exf, grdchk, seaice
1181      kept separate packages
1182      - cost, ecco, obcs
1183    o updating verification/internal_wave, verification/lab_sea
1184      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1185    
1186    checkpoint50i_post
1187    o Preparing next differentiable checkpoint and sync
1188      of MAIN vs. ecco-branch
1189      - 1st step: this one is differentiable
1190      - 2nd step: next(! not this) checkpoint will have updated packages
1191                  from ecco-branch)
1192    
1193    checkpoint50h_post
1194    o new package "land": provide surface BC for AIM.
1195    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1196    o AIM: use true log-P extrapolation for near surface temp (= as in
1197        F.Molteni paper) ; update aim.5l_cs output.
1198    o New variable in PARM03 for more flexible pickups
1199    o somewhat cleaned package initialisation sequence for
1200      ctrl/ cost/ ecco/ in packages_... routines
1201    
1202    checkpoint50g_post
1203    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1204      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1205      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1206        made the default because of faster convergence than ADI
1207    
1208    checkpoint50f_post
1209    o exf totally restructured
1210      - replaced all exf_set_ routines by one generic exf_set_gen.F
1211        and made sure it's still differentiable
1212      - split exf_getffields.F into new exf_bulkformulae.F
1213      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1214      - updated adjoint/makefile and relevant verif. accordingly
1215    
1216    checkpoint50f_pre
1217     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1218          + change Evap over land. (update aim.5l_cs output)
1219     o added missing .cvsignores and made uniform across expts
1220     o changed configuration of tidal_basin_2d expt
1221     o added pkg/debug functions for tracing code in fatal crashes
1222     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1223     o new fn in pkg/monitor to stop model if solution grows too big
1224     o removed lots of single quotes from comments
1225    
1226    checkpoint50e_post
1227    o make KPP work with PTRACERS
1228     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1229       nearly a copy of kpp_transport_s
1230     - there is no analogue to SurfaceTendencyS, so I have to use
1231       gPtr(of the surface layer) instead
1232    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1233    checkpoint50e_pre
1234    
1235    checkpoint50d_post
1236    o change kpp output from multiple-record state files to single-record state
1237      files analogous to write_state.F
1238    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1239      analogous to the cg2d-related output.
1240    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1241      so that writing to internal file fn (with length 512) fails.
1242    checkpoint50d_pre
1243    
1244    checkpoint50c_post
1245    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1246    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1247    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1248    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1249    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1250    
1251    checkpoint50c_pre
1252    Merging from release1_p13:
1253    o bug fix for pkg/seaice dynamic solver
1254    o Added SEAICE_initialHEFF to pkg/seaice
1255    
1256    checkpoint50b_post
1257    o store u*,v* in gU,V instead of in guNm1,gvNm1
1258    o in order to put the momForcing out of the Adams-Bashforth:
1259      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1260      to timestep.F
1261    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1262    o re-generate output for highly sensitive test-exp:
1263       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1264    
1265    checkpoint50b_pre
1266    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1267    o corrected CPP option mismatch in exf_Bulk... functions for case
1268      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1269    
1270    checkpoint50a_post
1271    o Bug fix for merging between c50 and KPP.
1272      ikey was passed from thermodynamics to kpp_calc via
1273      common block rather than being recomputed in kpp_calc,
1274      in contradiction with new key itdkey.
1275      New key ikppkey created, and tamc.h headers updated.
1276    
1277    checkpoint50
1278    - 2nd step of merge with ecco-branch:
1279      merge changes in ecco-branch back into main trunk
1280    - bug fix in find_alpha
1281    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1282    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1283    - merged some sliced AD support routines
1284    
1285    checkpoint49
1286    merged from ecco-branch:
1287    o exf:
1288      - Enable initialisation of forcing fields to constant
1289        (runtime) values.
1290      - in exf_getffields.F
1291        Reduce i-/j-loop to interior domain, discarding overlaps.
1292        That also fixes wrong TAF-key computations for key_1, key_2
1293        with bulf formulae.
1294      - exf_init.F modify #ifdef for exf_init_evap
1295      - exf_getffieldrec.F, ctrl_getrec.F
1296        The following INT-usages are not safe:
1297          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1298          fldcount = int(fldsecs/fldperiod) + 1
1299        and were modified.
1300    o autodiff: checkpoint_lev...
1301      - updated storing for bulk formulae (some arrays were missing)
1302      - added state for seaice package
1303      - synchronized with main branch
1304    o DIVA:
1305      Modif.s in
1306      - the_main_loop.F
1307      - the_model_main.F
1308      and added cost_final_restore.F cost_final_store.F
1309      o With these changes, it is possible to fully separate
1310        the first forward run to compute the cost function (mdthe_main_loop)
1311        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1312        into separate model executions.
1313        This enables better tuning of DIVA to given queue sizes.
1314      o Loss of cost function value in consecutive DIVA runs is
1315        fixed by storing to 'costfinal' file.
1316      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1317        beginning/end of adjoint integration is accounted for.
1318      The current changes apply to TAF-1.4.26.
1319      TAF has one remaining bug, requiring one manual change
1320      (see MITgcm manual).
1321    o cal: synchronized between MAIN and ecco-branch
1322    
1323    checkpoint48i_post
1324    o Changes to restore differentiability of code w.r.t. previous tag
1325      (mostly adding new routines to make list and replacing
1326      pressure by totPhiHyd).
1327    o Updated and merged grdchk package
1328      - has both ADM and TLM checks
1329      - works for single- and multi-proc.
1330      - output cleaned
1331      - worked successfully for parallel DIVA
1332    o genmake:
1333      - Adding -platform=SP4
1334      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1335    o Modif. for DIVA:
1336      ctrl_unpack should not be called in intermediate DIVA interval.
1337      (similar thing would apply for active files such as
1338      tbar, sbar, psbar, which should not be reinitialised;
1339      only relevant for ecco-branch)
1340    
1341    checkpoint48h_post
1342    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1343    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1344    o Added SEAICE_initialHEFF to pkg/seaice
1345    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1346    
1347    checkpoint48g_post
1348    --- EOS:
1349    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1350      store total Potential in totPhyHyd for diagnostics & EOS.
1351    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1352    --- Pressure/geopotential gradient:
1353    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1354    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1355      ( changes results of global_ocean_pressure )
1356    o NLFS + z-coord.: add eta*Rho' contribution.
1357    o accurate phiHyd when using interface-W at the middle between 2 centers
1358     ( changes results of ideal_2D_oce )
1359    o includes r* 2nd term in potential gradient.
1360    
1361    checkpoint48f_post
1362    Merging from release1_p12:
1363    o Modifications for using pkg/exf with pkg/seaice
1364      - improved description of the various forcing configurations
1365      - added basic radiation bulk formulae to pkg/exf
1366      - units/sign fix for evap computation in exf_getffields.F
1367      - updated verification/global_with_exf/results/output.txt
1368    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1369      (SBO) core products, including oceanic mass, center-of-mass,
1370      angular, and bottom pressure (see pkg/sbo/README.sbo).
1371    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1372      to avoid negative values in shallow regions.
1373      - updated verification/natl_box/results/output.txt
1374      - updated verification/lab_sea/results/output.txt
1375    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1376    o Added useSingleCpuIO option (see PARAMS.h).
1377    o Updated useSingleCpuIO option in mdsio_writefield.F to
1378      work with multi-field files, e.g., for single-file pickup.
1379    o pkg/seaice:
1380      - bug fix in growth.F: QNET for no shortwave case
1381      - added HeffFile for specifying initial sea-ice thickness
1382      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1383    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1384      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1385    o pkg/seaice:
1386      - adjoint-friendly modifications
1387      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1388    
1389    checkpoint48e_post
1390    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1391    o dynamics: change definition of computational domain & adapt mom_fluxform
1392      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1393    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1394        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1395        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1396        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1397        inverted_barometer solid-body.cs-32x32x1
1398      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1399    
1400    checkpoint48d_post
1401    o in preparation for r*:
1402     a) use pre-computed gradient of hydrostatic potential:
1403        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1404     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1405        => affects results of glob_oce_pressure (different truncation error)  
1406      update output.txt of ideal_2D_oce & global_ocean_pressure
1407    
1408    checkpoint48d_pre
1409    o in preparation for r*:
1410      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1411      pass the 2 comp. of the grad. as arguments to momentum S/R.
1412      but for the moment, only used if it does not change the results.
1413    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1414    
1415    checkpoint48c_post
1416    Modifications in treatment of initial flux forcing controls
1417    to avoid extra storing of flux fields.
1418    
1419    checkpoint48c_pre
1420    o Added tidal_basin_2d experiment (currently 1D!)
1421    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1422    
1423    checkpoint48b_post
1424    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1425     (modification to pressure gradient not yet implemented)
1426    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1427      (for U & V) that are used for vertical advection of momentum.
1428    
1429    checkpoint48a_post
1430    o In preparation for r*, use temp. array to compute vertical transport
1431       in flux-form momentum pkg. => change results of few test-exp.
1432      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1433                        lab_sea, natl_box & plume_on_slope
1434    
1435    checkpoint48
1436    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1437    
1438    checkpoint47j_post
1439    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1440    o moved adexch from forward_step to addummy_in_stepping
1441    o added exch in ctrl_map_...
1442    o aveFreq.=0. at end of cost_final to avoid overwrite in
1443      reverse checkpointing loop
1444    o Yet more changes in gmredi:
1445      * adgmredi_calc_tensor
1446        avoiding all recomputation of gmredi_slope_limit
1447      * adgmredi_x/y/rtransport
1448        added flag for excessive storing to avoid recomp. of
1449        u/v/rtans, dTdx/y/z
1450        -> this is not really necessary and very memory-consuming
1451      * adgmredi_slope_psi:
1452        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1453      * gmredi_slope_limit
1454        re-activated full calculation of taperfct for case 'ac02'
1455    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1456    
1457    checkpoint47i_post
1458    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1459    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1460      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1461    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1462    o gmredi: fix few bugs.
1463    
1464    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1465    This will be a good checkpoint to plug into the ecco-branch.
1466    o few modif.'s to get latest version adjointed
1467      (mainly kick out code in ini_linear_phisurf)
1468    o modif's to run adjoint with exactConserv
1469    o case GM_BOLUS_ADVEC should be cleaned
1470      S/R gmredi_slope_psi should be cleaned
1471    o verification/carbon now has exactConserv=.TRUE.
1472    
1473    checkpoint47g_post
1474    o time-average AIM output: becomes independent from statvars time-average
1475      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1476    o After TAF bug fix:
1477      Tested adjoint of gmredi package.
1478      Tests were done with checkpoint47 rather than with latest
1479      checkpoint47f_post since the latter is broken for the adjoint
1480      verification/carbon/ contains both ADM and TLM gradient checks.
1481    Here they are, before they get changed/lost/stolen.
1482    Mostly modif.'s to fix numerical sensitivities.
1483    Gradient checks OK for
1484    - GM_taper_scheme:
1485      * clipping
1486      * ac02
1487      * linear
1488      * glw91
1489      * dm95
1490      * ldd97
1491    - GMREDI_OPTIONS:
1492      * GM_VISBECK_VARIABLE_K
1493      * GM_NON_UNITY_DIAGONAL
1494      * GM_EXTRA_DIAGONAL
1495      * GM_BOLUS_ADVEC
1496    in conjunction with data.gmredi parameters to be checked in
1497    in a few minutes under verification/carbon/code/
1498    
1499    checkpoint47f_post
1500    Merging from release1_p10:
1501    o modifications for using pkg/exf with pkg/seaice
1502      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1503        and SEAICE_EXTERNAL_FLUXES
1504      - pkg/exf CPP options EXF_READ_EVAP and
1505        EXF_NO_BULK_COMPUTATIONS
1506      - usage examples are Experiments 8 and 9 in
1507        verification/lab_sea/README
1508      - verification/lab_sea default experiment now uses
1509        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1510    
1511    checkpoint47e_post
1512    o created a tag prior to creating a branch
1513    
1514    checkpoint47d_post
1515    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1516      at the bottom boundary had an erroneous half slip boundary condition
1517    o added bottom drag and no slip boundary condition capabilities to
1518      oceanic pressure coordinates code
1519    o added new verification experiment global_ocean_pressure, this experiment is
1520      also described in the tutorial section of the manual
1521    checkpoint47d_pre
1522    
1523    checkpoint47c_post
1524    o Added a verification experiment for a global cubed-sphere ocean run
1525      -  verification/global_ocean.cubed32x32x30
1526      -  uses pkg/therm_seaice and pkg/bulk_forcing
1527    
1528    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1529    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1530      when using P-coordinate; only implemented for atmospheric config.
1531    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1532      NOTES: requires option NONLIN_FRSURF to be "#define".
1533    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1534    
1535    checkpoint47b_post
1536    Merging from release1_p9:
1537    o pkg/seaice
1538      - removed GOTO's and added taf directives
1539      - double precision constants to reduce the g77 (Linux)
1540        to F77 (SGI) differences reported in release1_p8
1541    o tools/genmake
1542      - added SGI options
1543    o verification/testscript
1544      - updated to that of checkpoint47a_post
1545    o verification/global_ocean.90x40x15/input/eedata
1546      - modified for SGI f77 compatibility
1547    o verification/lab_sea
1548      - added description of sea-ice model
1549      - added missing matlab routines
1550      - added test of thermodynamics parallelization
1551    
1552    checkpoint47a_post
1553    o new pkg: aim_v23
1554     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1555       for now, keep the same surface forcing as before.
1556     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1557     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1558     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1559    o add diagnostic of surface correction term in monitor output
1560    
1561    o bulk_force and therm_seaice
1562    - Two packages:  bulk_force (Bulk forcing)
1563      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1564    - Earlier integration from Stephaine Dutkiewicz
1565      and Patrick Heimbach.
1566    - Two ifdef statements for compile time,
1567       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1568    
1569    checkpoint47
1570    differentiable version of checkpoint46n_post
1571    o bug fix in quasihydrostaticterms
1572    o * "clean" adjoint code (in terms of extensive recomputations)
1573        can now be obtained for all GMREDI options (i.e. for
1574        - GM_VISBECK_VARIABLE_K
1575        - GM_NON_UNITY_DIAGONAL
1576        - GM_EXTRA_DIAGONAL
1577        - GM_BOLUS_ADVEC )
1578      * However, wrong gradient check problem remains unsolved.
1579      * New CPP options have been introduced for different
1580        tapering schemes
1581    o external_fields_load now part of differentiation list
1582    o pressure needs multiple storing;
1583      would be nice to have store_pressure at beginning or
1584      end of forward_step, e.g. by having phiHyd global (5-dim.)
1585      (NB: pressure is needed for certain cases in find_rho,
1586      which is also invoked through convective_adjustment).
1587    o recomputations in find_rho for cases
1588     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1589    o #define ATMOSPHERIC_LOADING should be differentiable
1590    o ini_forcing shifted to begining of initialise_varia
1591    o Incorporating QNVS line search routines into MITgcm
1592      (this is separate code, and therefore not under pkg)
1593      lsopt/, optim/
1594    o Updated verification/carbon/
1595      - #define GM_VISBECK_VARIABLE_K
1596      - GM_taper_scheme    = 'ldd97'    
1597    
1598    checkpoint46n_post
1599    Merging from release1_p8:
1600    o verification/natl_box:
1601      updating new external_fields_load routine
1602    o New package: pkg/seaice
1603      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1604      The sea-ice code is based on Hibler (1979-1980).
1605      Two sea-ice dynamic solvers, ADI and LSR, are included.
1606      In addition to computing prognostic sea-ice variables and diagnosing
1607      the forcing/external data fields that drive the ocean model,
1608      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1609      The implied surface heat flux is then stored in variable
1610      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1611      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1612      non-local transport term.  Because this call precedes model
1613      thermodynamics, temperature under sea-ice may not be "exactly" at
1614      the freezing point by the time theta is dumped or time-averaged.
1615      N.B.: fairly large differences in accuracy occur across
1616            different platforms/compilers; comparison between
1617            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1618            generated output gives:
1619       T           S           U           V
1620      C D M    c        m  s        m  s        m  s        m  s
1621      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1622      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1623      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1624    
1625      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1626    o GAD:
1627      - generated new common blocks to account for call of
1628        same gad routines with differing traceridentities
1629        (needed to modify tracerIdentity indices in GAD.h)
1630      - generated separate common blocks for case useCubedSphereExchange
1631        (Department of Futurology)
1632      - parameter lists to gmredi_?transport: added tracerIdentity
1633      - added new key indices to tamc.h
1634    o external_fields_load:
1635      - added this routine to TAF list
1636      - needed to make some common blocks global and additional storing
1637        along the same lines as exf package (checkpoint_lev?_directives.h)
1638    o exf:
1639      updated external forcing package
1640      - bug fixes carried over from ecco-branch
1641        (missing OBCS_OPTIONS.h in two routines)
1642      - enable easy to use "no forcing".
1643      - added exf I/O for atmospheric loading
1644      - added exf I/O for runoff data
1645      - transfered scaling between exf <-> MITgcm to exf namelist
1646    o Adding new verification experiment global_with_exf.
1647      This verification experiment is almost identical to the
1648      global_ocean.90x40x15 experiment, except that it uses
1649      the exf (and cal) package instead of the
1650      external_fields_load routine (cf README file).
1651    
1652    checkpoint46m_post
1653    o modified testscript to return -- when there are no lines of "%MON" output
1654    o added new flag "quasiHydrostatic" for QH mode
1655      and new routine quasihydrostaticterms()
1656    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1657      New routine: mom_u_coriolis_nh()
1658    o fixed sign of non-hydrostatic metric terms in u and v equations.
1659      Depend on correct sign of gravitySign.
1660    o added work.pc* to .cvsignore in aim directories using ifc
1661    o introduced flag for controllin non-hydrostatic metric terms
1662    o removed gravitySign from PARM04
1663    o switched to g77/ifc from pgf77 in aim experiments
1664    
1665    checkpoint46l_post
1666    o made convective adjustment work with pressure coordinates:
1667     - changed the direction of k-loop in convective_adjustment.F for the
1668       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1669     - adjusted the reference pressure k-index in convective_adjustment.F
1670     - adjusted the convection condition in convect.F (in analogy to
1671       calc_ivdc.F)
1672     - convective_adjustment no longer computes anything on the halos
1673     - removed the warnings about negative salinity from find_rho.F and
1674       find_alpha.F; instead the new routine look_for_neg_salinity, called
1675       at the beginning of find_rho, find_alpha, and find_beta, does a
1676       check of the entire slice, if CPP-option
1677       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1678    checkpoint46l_pre
1679    
1680    checkpoint46k_post
1681    o fixed the verification/global_ocean.90x40x15 experiment:
1682     - new bathymetry (the world according to A., JMC, and M.)
1683     - new initial fields and forcing fields (*.bin files)
1684     - new POLY3.COEFFS (for the next release one should switch to a full
1685       equation of state: JMD95P or MDJWF)
1686     - fixed several errors and redundancies in the data file
1687     - experiment uses looped cells
1688     - added matlab directory with diagnostic scripts for plotting of output
1689    
1690    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1691     - read AIM physics parameters from a file (data.aimphys)
1692     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1693    
1694    checkpoint46j_post
1695    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1696    o move wVel computation at the end of the time step, in S/R integr_continuity
1697    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1698    o update timeave pkg for wVel diagnostic.
1699    checkpoint46j_pre
1700    
1701    checkpoint46i_post
1702    o Clean up AIM package (and keep the results unchanged):
1703      include CPP_OPTION and use IMPLICT NONE in all routines ;
1704      declare all the variables _RL ; use _d 0 for all numerical constants.
1705      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1706    
1707    checkpoint46h_post
1708    o cleaned up the use of rhoNil and rhoConst.
1709      - rhoNil should only appear in the LINEAR equation of state, everywhere
1710        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1711        and the dynamical equations are all divided by rhoConst
1712    o introduced new parameter rhoConstFresh, a reference density of fresh
1713      water, to remove the fresh water flux's dependence on rhoNil. The default
1714      value is 999.8 kg/m^3
1715    o cleanup up external_forcing.F and external_forcing_surf.F
1716      - can now be used by both OCEANIC and OCEANICP
1717    checkpoint46h_pre
1718    
1719     Added code to convert surface volume flux (fresh water) into
1720     a mass flux when using P coordinates in the ocean (OCEANICP).
1721     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1722    
1723    checkpoint46g_post
1724    o Include a new diagnostic variable phiHydLow for the ocean model
1725      - in z-coordinates, it is the bottom pressure anomaly
1726      - in p-coordinates, it is the sea surface elevation
1727      - in both cases, these variable have global drift, reflecting the mass
1728        drift in z-coordinates and the volume drift in p-coordinates
1729      - included time averaging for phiHydLow, be aware of the drift!
1730    o depth-dependent computation of Bo_surf for pressure coordinates
1731      in the ocean (buoyancyRelation='OCEANICP')
1732      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1733        Theta, Salinity, and Pressure in the parameter list. This routine is
1734        presently contained in find_rho.F. This routine does not give the
1735        correct density for 'POLY3', which would be a z-dependent reference
1736        density.
1737    o cleaned up find_rho
1738      - removed obsolete 'eqn' from the parameter list.
1739    o added two new verification experiments: gop and goz
1740      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1741    checkpoint46g_pre
1742    
1743    checkpoint46f_post
1744    o Enable tangent linear (forward mode) gradient checks:
1745      - extended active file handling to g_... files
1746      - added TANGENT_SIMULATION to theSimulationMode
1747      - extended grdchk package accordingly
1748    o added tangent linear setup in verification/carbon/code_ftl
1749    o added adjoint setup in verification/front_relax/code_ad
1750    
1751    checkpoint46e_post
1752    o Added new equation of state -> MDJWF
1753      - EOS of McDougall et al., 2002, JAOT, submitted
1754      - caveat: the equation of state is only valid for a smaller (more
1755        realistic?) range of values than JMD95P/Z and UNESCO
1756      - added masks to the calculation of pressure in store_pressure
1757      - added more check values for density in check_eos (ini_eos.F), some of
1758        the old check values are out of the range of the MDJWF-eos, so don't
1759        expect perfect matches for those
1760    checkpoint46e_pre
1761    
1762    checkpoint46d_post
1763    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1764      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1765      case of pressure coordinates. eosType='JMD95Z' in
1766      combination with buoyancyRelation='OCEANICP' now causes an error.
1767    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1768      in find_alpha/beta.
1769    checkpoint46d_pre
1770    
1771    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1772      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1773    
1774    checkpoint46c_post
1775    o Changes necessary for ocean in p-coordinates
1776     -  Added new buoyancy relation = 'OCEANICP'
1777     -  Added new parameters = gravitySign (this used to be contained inside
1778        the factor dRdZ which I added when we first switched to R coordinates).
1779     X GM/Redi is not compatible (yet)
1780     X bottom drag and no-slip need to be debugged.
1781    checkpoint46c_pre
1782    
1783    checkpoint46b_post
1784    o Added new equation of state -> JMD95Z and JMD95P
1785      - EOS of Jackett and McDougall, 1995, JAOT
1786      - moved all EOS parameters into EOS.h
1787      - new routines ini_eos.F, store_pressure.F
1788    o Added UNESCO EOS, but not recommended because it requires
1789      in-situ temperature (see JMD95)
1790    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1791      unesco.f to be used with POLY3
1792    checkpoint46b_pre
1793    
1794    checkpoint46a_post
1795    o Added (atmospheric) pressure loading
1796      - new field in FFIELDS.h, etc...
1797      - new cpp flag ATMOSPHERIC_LOADING
1798    o Changed hFacC to _hFacC in calc_phi_hyd.F
1799    o Added SHORTWAVE_HEATING to some files for consistency
1800    checkpoint46a_pre
1801    
1802    checkpoint46
1803    further merges from release1_p5
1804    o new ctrl package
1805      - adopted from ECCO environment to enable optimization
1806      - added Eliassen Palm fluxes to controls
1807    o added Eliassen Palm flux controls to gradient check package
1808    o cost package
1809      - Compatible with new ctrl package
1810      - added Eliassen Palm cost hooks
1811      - modif's of existing cost functions
1812    o Adjoint-related bug fixes in kpp:
1813      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1814      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1815    o autodiff package
1816      - flow directives:
1817        + new for S/R do_the_model_io
1818        + enhanced for S/R checkpoint
1819        + new gmredi.flow
1820      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1821        disable adcommon.h/g_common.h by default.
1822      - fixed problem for adjoint of global_max
1823    o modified verification/carbon/
1824    o New setup for adjoint of global_ocean
1825    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1826    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1827    o incorporated hooks for sponge layer code (external_forcing.F)
1828    
1829    checkpoint45d_post
1830    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1831    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1832      (affects plume_on_slope "cg2d" output)
1833    o add new parameter deltaTfreesurf for free-surface time stepping
1834    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1835    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1836    o change phiMin in exp1 (to agree with documentation)
1837    o add new flags:
1838     - T,S forcing inside/outside Adams-Bashforth
1839     - turn off temp,salt advection and/or forcing
1840     - for each tracer, define internal flag for multiDimAdvection & A-B
1841    o monitor: change definition of KE to check conservation of Energy
1842    
1843    checkpoint45c_post
1844    o Removed f90 comments ("!")
1845    o Modified initialisations to enable exf package for MITgcm
1846      (without invoking ECCO_PACKAGE).
1847    o modifications to gradient check package (Martin Losch)
1848      - enable centered differences
1849      - modified format of standard output
1850    
1851    checkpoint45b_post
1852    o cleaned exchange calls in cg2d
1853    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1854    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1855      to configure barotropic setup (Martin Losch)
1856    o moved some initialisations within bi,bj loop in dynamics
1857      (TAF flow dependency)
1858    o in initialise_varia, moved call packages_init_variables
1859      before convective_adjustment_init
1860      (corresponding adjustment of TAF tape initialisation).
1861    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1862    
1863    checkpoint45a_post
1864    o compute Rho over the whole domain (extend iMin,jMin indices)
1865    o specific exchange for X-slice domain (case Ny=1)
1866    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1867    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1868    
1869    checkpoint44h_post = checkpoint45
1870    o Fix to restore differentiability:
1871      place at which packages_init_variables is called in
1872      initialise_varia is crucial for reverse control flow.
1873    o modifications in GMRedi to enable stable adjoint
1874      (corresponding modif's in thermodynamics, dynamics)
1875    o added missing hook for sponge layer code in external_forcing
1876    o modified test cost functions
1877    o storing in gad_advection (plus removal of write(0,*)!
1878    o missing headers TR1.h added in convective_adjustment routines
1879    o errorMessageUnit set non-equal zero in eeboot
1880      (conflict on some platforms, e.g. IBM SP3)
1881    o modified carbon verif.
1882    
1883    checkpoint44h_pre
1884    o vertical grid option: allow to put the Interface at the middle between
1885      2 cell-centers ; replace delZ in pkg/kpp by drF.
1886    o GM Advective form: Tracers are advected using the residual transport (=
1887      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1888    
1889    checkpoint44g_post
1890    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1891      results) ; ifdef missing in thermodynamics.F
1892    
1893    checkpoint44f_pre,checkpoint44f_post
1894    o added PTRACERS package
1895      This allows an arbitrary number of passive tracers to be integrated
1896      forward simultaneously with the dynamicaly model.
1897      + Implemented so far:
1898        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1899        - I/O and checkpointing
1900        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1901      + Not implemented so far:
1902        - KPP
1903        - OBCS
1904      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1905        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1906        line in data.pkg.
1907      + This package is disabled by default since it increases storage.
1908    
1909    
1910    o testscript: added -cleanup option
1911    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1912                 b) enable to filter 2D fields.
1913    
1914    checkpoint44e_pre,post
1915    o re-wrote convective adjustment to use pre-calculated weights
1916      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1917      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1918      Original calls to convect() still in place.
1919    
1920    chkpt44d_pre,post
1921    o added missing EXCLUDE_MONITOR flags
1922    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1923      (incompatible typ in MIN/MAX expressions caused problems
1924      on IBM SP3)
1925    o in genmake added variable MAKEDEPEND
1926      plus resetting for case SunOS
1927    o added timer_stats.c routine for IBM SP3
1928    o removed variables in dynamics
1929    !!! I forgot to create tag chkpt44d_pre !!!
1930    !!! But chkpt44d_pre = chkpt44c_post    !!!
1931    
1932    o real fresh water flux implemented with non-linear free-surface.
1933    
1934    chkpt44c_pre,post
1935    o few fix (mask in shap_s2, EmPmR in external_field_load,
1936      USE_NATURAL_BCS in solve_for_P);
1937    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1938    
1939    checkpoint44b_pre/_post
1940    o merge of relevant stuff from the ecco-branch:
1941      - genmake: removed $S64 overwrite for case SunOS
1942      - pkg/exf: update and corrections for field swapping and obcs
1943      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1944                  harmonized between ECCO and MITgcm
1945      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1946                      updated checkpointing_lev... lists for obcs
1947      - model/src: minor changes in forward_step, plot_field
1948                   added directive for divided adjoint in the_main_loop
1949      - pkg/mdsio: added mdsio_gl_slice
1950    
1951    o check parameters & config (chkpt44a_pre,post)
1952    o OBC and NonLin_FrSurf.
1953    
1954    checkpoint44
1955    o fix bug in mom_vi_del2uv
1956    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1957    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1958    o update AIM experiments (NCEP input files)
1959    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1960    o added some stuff for AD
1961    
1962    checkpoint43
1963    o added two new advection tests
1964    o added global 4x4 degree ocean test
1965    o added test of H&S94 with free surface on cube
1966    o some final mods for gradient check, adjoint,...
1967    
1968    checkpoint42
1969      Fixed AD-related problems:
1970    o Store directives up-to-date with re-arranged Adams-Bashforth
1971      (mainly thermodynamics.F)
1972    o New store directives for multi-dim. advection schemes
1973      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1974      * new common block and key passkey
1975      (mainly gad_advection.F)
1976    o Modified store directives for split of dynamics/thermodynamics
1977      for the case ALLOW_KPP
1978    o Cleaned argument list for timestep_tracer.F
1979    
1980    checkpoint41
1981    o re-formatted/added comments in prologues of key subroutines
1982      to work with protex
1983    
1984  checkpoint40  checkpoint40
1985  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
1986    o added FLT (floats) package from Arne along with demo. experiment
1987    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1988      implementation of forward-in-time forcing terms
1989    o more mods for non-linear free-surface including new variable
1990    o modified multi-dim method to work on cube
1991    o bug fix in KPP (from DM)
1992    
1993    checkpoint40pre9
1994    o added DST advection schemes
1995    o fix MPI bug on SGI's
1996    o modifications for non-linear free-surface
1997    o fixed conditionals for fixed flow/passive tracer only mode
1998    o added tension/strain form of stress tensor
1999    o changes to commenting of arguments for TAF/TAMC
2000    o added/updated many matlab scripts
2001    o added multi-dimensional advection method for tracers
2002      
2003    checkpoint40pre8
2004  o new package rw/  o new package rw/
2005    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
2006    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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