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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.468 by edhill, Sun Apr 3 05:16:43 2005 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o mnc-ifying the seaice package
7    o introduced an alternative length scale calculation for use in the limiting
8      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
9    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
10    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
11      as well as grad(vort3).  Made it compatible with both approximate form
12      for the cubed sphere and full form of these gradients.  Added flag
13      useFullLeith to select between approximate and full form.  
14    o add "d0" in getcon.F to reduce differences between compilers/platforms
15      update output.txt of exp. fizhi-gridalt-hs
16    o change port_rand funtion to allow to set the seed.
17    o fix obscure MNC bug involving conversion between reals and integers
18      - it caused no problems with certain (eg. gcc, ifc) compilers but the
19        new version is now more standards-compliant
20    
21    checkpoint57e_post
22    o Adding eddy stress controls a la Ferreira et al.
23    checkpoint57e_pre
24    
25    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
26      update output.txt of exp. fizhi-gridalt-hs
27    o add more "Z" dimensions and associated coordinate vars to MNC
28    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
29    o parameter calendarDumps: when set, approximate months (30-31 days) and years
30      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
31      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
32      months and years.  Requires pkg/cal.
33    o diagnostics: add pickup functionality
34      - off by default for backwards compatibility
35      - current version only uses MDSIO -- MNC will be added
36    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
37    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
38    
39    checkpoint57d_post
40    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
41    o modify verification/ideal_2D_oce so that it tests the creation of mnc
42      output from the diagnostics package
43    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
44    o make genmake2 more portable by using ".$FS" instead of ".f" for more
45      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
46    o add coordinate variables to the MNC output from the diagnostics package
47    o change MNC-flags default value: true when useMNC=TRUE
48    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
49      the ability (off by default) to read the grid information using MNC
50    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
51    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
52    o do snap-shot diagnostics at the middle of the time-interval (instead of
53      at the end).
54    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
55      new test for AIM with thSIce + slab-ocean
56    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
57    o move state variable diagnostics to the beginning of the time step ;
58      (note: still needs some work specially for snap-shot diagnostics)
59      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
60    
61    checkpoint57c_post
62    o Change testing option (-ieee) to get closer agreement between g77 & ifort
63    o generate new output.txt files on faulks with g77 & the new -ieee option
64    checkpoint57c_pre
65    
66    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
67      update output.txt of exp. global_ocean.90x40x15
68    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
69      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
70    o add saltFlux(+File) forcing capability with periodicExternalForcing
71    o allow to use pkg diagnostics for GM-Redi & ThSIce output
72    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
73    o improvements for the MNC output from DIAGNOSTICS:
74      - correct handling of the unlimitied dimension
75      - all dims now have associated coordinate variables
76      - variables located at U, V, and Corner ("Z") points are now written
77        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
78        *all* data points are output
79    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
80    o added pkg/seaice/seaice_monitor.F
81    o mdsio_readfield.F can now read files visible only to master MPI process.
82    o pkg/seaice: some test code for ice-modified ocean stress
83    o exf_getffields interpolation defaults to bilinear for all scalar forcing
84      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
85      spurious negative numbers for precipitation and humidity.  Will cause
86      some small numerical differences for integrations using pkg/exf/exf_interp.F.
87    o pkg/ctrl/
88      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
89        May be enabled via doPackDiag
90      *  introduce z-scaling of
91         + gradient (doZscalePack) and
92         + control (doZscaleUnpack)
93    o pkg/mdsio/
94      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
95      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
96    
97    checkpoint57b_post
98    o simplify options in diagnostics_fill arguments (remove weird combinations)
99    o fix MNC coordinate variables so that they now contain per-face index
100      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
101      general, EXCH2 grids are only aligned to a "local" coordinate system
102    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
103    o Implement instantaneous output within pkg diagnostics:
104      setting a negative frequency in data.diagnostics produces
105     "snap-shot" output (as opposed to time-average if freq > 0)
106    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
107      NOTE: change ptracer diagnostics name: use 2 characters to work with
108            more than 9 tracers. Add also diagnostics of advect & diffus flux.
109    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
110      becomes the coordinate variable for the 'T' dimension
111    o add CF-style coordinate variables to MNC
112      - just a first cut:  numbers are meaningless on the cubesphere and
113        missing along the T axis but otherwise it works!
114    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
115    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
116    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
117      this is based directly on what the model compute, so that the content of
118      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
119    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
120    o clean up build options files for SunOS, in particular
121      - remove -traditional from xmakedepend
122      - change -xarch=v9 to -xarch=native for f77
123      - restore use of make (not gmake)
124      - add CC=gcc if using g77
125    o changes per discussion of AM, JMC, & EH3 today:
126      - move redundant "grid" variables out of "state" -- in preparation of
127        creating proper CF-style coordinate variables and in recognition
128        that any/all grid variables can be easily copied (eg. w/NCO) from
129        the grid files into any of the other NetCDF files
130      - *always* output grid variables with MDSIO (this will eventually be
131        changed)
132      - output MNC grid file if useMNC is true
133    o every instance of _END_MASTER() has been found and replaced with
134      _END_MASTER( myThid ) in order to satisfy certain picky Sun
135      preprocessors
136    o re-arrange diagnostics pkg initialisation:
137     - allow each package to extend the available diagnostics list
138     - add some checking and fix small problems (multi-threaded, ...)
139     - new S/R diagnostics_fill (replace fill_diagnostics):
140       look through the short list of active diag. (instead of the long list)
141       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
142    
143    checkpoint57a_post
144    o this set of changes restores TAMC compatibility
145      tested for global_ocean.90x40x15 adjoint on trough
146      (what a pain)
147    
148    checkpoint57a_pre
149    o some modifs in tools/build_options for sunos
150    o call ctrl_pack for ctrl at end for optimcycle=0
151    
152    checkpoint57
153    o add horizontal bi-harmonic viscosity for vertical velocity
154      - new parameter viscA4W (defaults to viscA4)
155      - affects only non-hydrostatic code
156      - to be done: no-slip lateral boundary conditions
157    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
158    o implement Implicit Vertical advection for pTracers
159    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
160      (implemented also for implicit vertical diffusion & advection)
161    o OBCS: extend application of tracer open boundary conditions
162      to a strip beyond the boundary of width Olx/Oly
163    o add call monitor to TAF set of required calls (flow directives)
164      and include in natl_box_adjoint
165    o untangle a few ifdefs related to cost, ctrl, autodiff
166      untangel a few ALLOW_ECCO_OPTIMIZATION
167    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
168      (theta2, salt2 in ecco_cost_weights)
169    
170    checkpoint56c_post
171    o OBCS as control variables
172      - update ctrl_ad_diff.list, obcs_ad_diff.list
173      - remove balance of obcs controls from default
174      - fix index bug nobcs in ctrl_init
175      - fix dummy fields filen in ctrl_pack
176      - add dummy weights for obcs
177    o lsopt: comment out fort.94 output
178    o optim:
179      - remove unnecessary header files
180      - adjusted namelists
181      - add xerbla.F to Makefile
182    o exf:
183      - multiple modifications of exf_check_range
184      - unit change in exf_init_runoff from [m/year] to [m/s]
185    o mdsio:
186      - i/o-vector change debugLevel from debLevA to debLevB
187    
188    checkpoint56b_post
189    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
190      is called from DO_THE_MODEL_IO
191      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
192      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
193      - clean up PTRACERS_WRITE_TIMEAVE a little
194    o add another verification experiment that tests both the cfc-pkg and
195      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
196      reactive tendencies treated inline with regular timestepping
197    o testreport previously did a lousy job of comparing small numbers, so
198      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
199      implemented in the little c-progam tmp_cmpnum.c which is embedded in
200      testreport.
201    o ptracers_monitor: bug fix for MPI
202    
203    checkpoint56a_post
204    o GCHEM: finish reorganizating the package
205      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
206        (introduces another 3D-array for each passive tracer, but only if
207        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
208        gchemTendency is not needed because the timestep is done separately)
209      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
210      - GCHEM is now---more or less cleanly---separate from PTRACERS
211      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
212        so clear to me how that should be done in a general way.
213    o CFC: improve formatting of output in CFC_ATMOS
214    o PTRACERS:
215      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
216        that ALL experiments with ptracers enable can be checked. This makes
217        GCHEM_MONITOR obsolete.
218      - include a runtime parameter PTRACERS_monitorFreq that defaults to
219        monitorFreq
220      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
221    o add PTRACERS (PTR0[1-5]) to testreport output
222    o exf_check_range:
223      * default changed to .TRUE.
224      * will check values for niter0 if debLevA, every timestep if debLevB
225      * STOP in exf_check_range if 'out of range'
226      * range chosen generous to allow for potential extema
227      TBD: a version with stricter range
228           permitted range would be runtime parameters
229    o GMredi:
230      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
231      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
232      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
233    o GCHEM:
234      - move call to GCHEM_FORCING_SEP, so that it is now called before
235        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
236      - introduced a useGCHEM runtime flag and applied it everywhere.
237      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
238        this flag is now only visible within GCHEM-pkg routines.
239      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
240        be replaced by a 3D array that is computed before thermodynamics; for
241        this, the tracer ID iTracer had to be included into the parameter list
242        of ptracers_forcing
243      - set up forward_step to call gchem_forcing, that will replace
244        gchem_forcing_int in ptracers_forcing
245      - cleaning up
246    o small cleaning of exch2: remove files that are also in eesupp/src
247    
248    checkpoint56
249    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
250    o mnc: cleanup "full" files--fixes out-of-memory problem
251    o ECCO-GODAE
252      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
253      * fully merged and updated from SIO code
254        windstress sign change affects
255        - exf_inscal_[u/v]stress
256        - sign of xx_tau[u/v] adjustments
257        - signs in cost_scat
258      * ctrl_get_gen: avoid update of tau[u/v] for first few days
259      * natl_box_adjoint updated and compressed
260      * 2-level checkpoint switch added
261        (tested in EXP. 1 of natl_box_adjoint)
262      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
263    o SVD
264      * first complete, non-hacked version for SVD calculations
265      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
266        performed via direct access files admtlm_vector.it????
267        (via ctrl_[un]pack)
268      * optimcycle is used for ARPACK iteration counter
269        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
270      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
271        and add linear transforms where necessary
272      * controls are initial/final SST, SSS (can be extended; need to check
273        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
274    o mdsio: filename info to both stderr, stdout
275    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
276      from sign change
277    
278    checkpoint55j_post
279    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
280      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
281    o add consistent build directories and .cvsignore files to verification
282    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
283    o make all subroutines 30 or less characters in length for certain older
284      compilers to work (a thorough search only turns up two routines in
285      pkg/ptracers)
286    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
287      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
288    
289    checkpoint55i_post
290    o change arrays for total vertical diffusivity (2.D if explicit,
291      3.D if implicit) ; each ptracer uses its own background value.
292    o added mnc/NetCDF output capability to ocn_compon_interf
293      - added bits to verification/cpl_aim+ocn so that it can run on
294        ITRDA and other clusters without the mpirun "-wd" option
295    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
296      configuration
297    o give MNC the ability to create additional files rather than
298      exceeding a specified file size limit "MNC_MAX_FILESIZE"
299      - the default is just less than 2GB which is a practical limit
300        on many systems
301    o Compute the non-local term using either KPP vertical diffusivity (=default)
302       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
303    
304    checkpoint55h_post
305    o add verification test "vermix"
306    o remove all the *_ioinc flags and replace with the single global
307      outputTypesInclusive flag
308    o allow to set a vertical profile of vertical diffusivity for T & S
309    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
310    o useMNC moved from data.mnc to data.pkg
311    
312    checkpoint55g_post
313    o Renaming carbon AD experiments to comply with testreport conventions
314    o Updating adjoint of Held-Suarez hs94.1x64x5
315    o Fixing directives for non-ECCO forward_step, after ECCO directives
316      have been fixed to avoid recomp. of do_oceanic_phys
317      Works well for global_ocean.90x40x15,
318      but recomp. issue remains for carbon
319    o Updating adjoint output for natl_box_adjoint after
320      pkg/ecco has been modified (see taga c55d_post)
321    
322    checkpoint55f_post
323    o rename to timeave_init_fixed
324    
325    checkpoint55e_post
326    o some delicate re-shuffle of store directives to avoid one
327      extra call of do_oceanic_physics
328      affects ecco_the_main_loop.F, do_oceanic_physics.F
329      checkpoint_lev1_directives.h
330    o NB: this may break global_ocean adjoint temporarily,
331      but it is clear how to fix it. Will do later, need this now.
332    
333    checkpoint55d_post
334    o ECCO specific cost function terms (up-to-date with 1x1 runs)
335    o ecco_cost_weights is modified to 1x1 runs
336    o modifs to allow observations to be read in as
337      single file or yearly files
338    o enable to read exf forcing fields as either
339      single file or yearly files (flag useExfYearlyFields)
340    checkpoint55d_pre
341    
342    o switch between 2-level and 3-level checkpointing
343    o add ability of MNC to write local and "partial" (eg. 2D slices where
344      the full 3D field is never actually stored) arrays to NetCDF files
345      with the correct (that is, the complete multi-dimensional) set of
346      array indicies
347      - used in mom_vecinv() to write the diagFreq output
348      - tested (demonstrated) in verification/aim.5l_cs
349    o further mnc-ification
350      - add verification/lab_sea to the list with mnc setups
351      - fix undefined mnc v-names in cd_code
352      - add kpp to mnc output (both snapshot and timeave)
353    o non-hydrostatic code
354      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
355        in calc_gw.F
356      - defaults to viscAh
357      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
358        friction or Leith) in non-hydrostatic mode, as long as there is
359        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
360    o pkg/cost
361      extend simple cost functions to treat time mean quantities
362      (T,U,V) via cost_accumulate_state from cost_tile
363    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
364        be 2 times larger than the minimum size the advection scheme requires.
365        now get a perfect conservation of salt in advect_cs test-exp (updated)
366    o GGL90 (Gaspar's TKE mixed layer)
367      - add horizontal diffusion of TKE, requires exchanges in
368        do_fields_blocking_exchanges, horizontal diffusivity is zero by
369        default. In OPA there is no horizontal diffusion of TKE but the
370        mixing coefficients are computed from a horizontal average of TKE of
371        6 points or so. I think that diffusion has a little more physical
372        justification.
373      - clean up ggl90_calc in the hope of reducing memory usage (this hope
374        was in vain)
375      - mask tke-variable in ggl90_init
376    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
377    o fix biharmonic diffusion on CS-grid.
378    o more obcs stuff
379      - added obcs_external_fields_load as an alternative to the EXF-pkg option
380        for reading boundary values. This routine is called from
381        obcs_prescribe_read
382      - updated obcs_check
383      - changed sponge layer relaxation parameter units for days to seconds
384      - turned off sponge layer by default
385      - changed argument list of OBCS_CALC to myTime+deltaTclock
386      - fixed about 35 bugs in obcs_external_fields_load
387    
388    checkpoint55c_post
389    o obcs stuff
390      - new runtime flags useOBCSprescribe, useOBCSbalance
391      - re-arranged obcs_calc
392      - moved exf_getobcs to obcs_prescibe_read
393        obcs_prescibe_read is called after ORLANSKI stuff
394        and independent of it (executable can contain all).
395      - updated obcs_check
396      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
397        These may be necessary only if tangential velocities are
398        prescribed at OB, not sure, needs testing.
399    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
400      which simplifies the calls and passes the ifc check-bounds test
401    
402    checkpoint55b_post
403    o add a 2D scalar, Z location, exchange_2 routine.
404    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
405      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
406      affects advect_cs results (for the wrong reason): update output.txt
407    o use a more standard discretization for biharmonic viscosity ;
408     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
409      affects results of dome set-up: update output.txt
410    o fix gad_advection.F (CubedSphere part), back to version 1.23
411    o fix bug in mom_vi_del2uv.F (CubedSphere part).
412    
413    checkpoint55a_post
414    o merged code to
415      * prescribe/read time-dependent open boundaries
416        (works in conjunction with exf, cal)
417      * sponge layer code for open boundaries
418      * each boundary N/S/E/W now has its own CPP option
419        (healthy for the adjoint)
420    
421    checkpoint55
422    o up-to-date adjoint of previous breaks
423      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
424      - global_ocean_ebm: adjoint still needs fix (TLM ok)
425      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
426      - carbon: * remove tr1-related adjoint verification
427                * add ptracer as control variable
428    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
429      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
430    
431    checkpoint54f_post
432    o in verification/carbin/ remove experiment related to
433      ALLOW_PASSIVE_TRACER (array tr1 etc)
434      code_ad/ input_ad/ results_ad
435    
436    o add two new packages
437      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
438        + subject to optimization (memory)
439      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
440        + subject to reordering (many GOTOs in the original code)
441        + so far opps is called for every (i,j) point, and then operates in
442          the vertical; one may want to reorder the scheme in order operate in
443          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
444          fields)
445    o overhaul of IO so that we now have flags for MDSIO and/or MNC
446      - all verification tests compile and run with linux_ia32_g77
447      - defaults are compatible with current input files--nothing
448        should change if you were not previously using MNC
449      - MNC output has been added in numerous places (eg. timeave)
450        but there are still a few writes not yet do-able with MNC
451        (this is in progress)
452      - flags now allow for either/or/both use of MDSIO and MNC and
453        documentation will soon follow
454      - numerous small formatting cleanups for ProTeX
455    o add version info (via BUILD_INFO.h) to MNC and stdout
456    
457    checkpoint54e_post
458    o add two new packages
459      - pp81 (Packanowski and Philander, 1981), Richardson number and
460        stratification dependent mixing
461      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
462      - these scheme operate in a similar manner as KPP (without ghat, of
463        course), however there is only one diffusivity that is used for both
464        temperature and salinity (and passive tracers)ç
465    o add offline package
466    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
467      provided by Stephanie Dutkiewicz
468    o genmake2: add ability to search for C compilers and cleanup test output
469      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
470    
471    checkpoint54d_post
472    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
473    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
474      leading to additional shift by 5 days each year of integration
475       (i.e. leading to considerable offset over the years)
476    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
477    o start with no AB and no initial filtering (staggerTimeStep):
478      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
479    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
480      (external loading & cpl import/export stay in forward_step.F)
481    o update coupling interface to work with new staggerTimeStep
482    o change MDSIO ptracers_pickup.
483    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
484    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
485    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
486    
487    checkpoint54c_post
488    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
489      this affects (truncation error) output.txt of test-exp:
490       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
491    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
492    o change Qnet to always be the net heat flux, (+upward).
493      affects (truncation error) output of natl_box exp.: updated
494    o define the max number of passive tracers in PTRACERS_SIZE.h
495    o start to test mnc routinely in exp0
496    o add sea-ice loading (sIceLoad) as a new forcing field.
497    
498    checkpoint54b_post
499    o add testreport "-j JOBS" option for parallel builds (tested and pretty
500       impressive on Altix and Opteron systems)
501    o diagnostics can now write NetCDF files through the mnc package
502    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
503    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
504    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
505      affects (truncation error) output of lab_sea & natl_box exp.: updated
506    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
507    
508    checkpoint54a_post
509    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
510    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
511    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
512    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
513      + internal_wave (shift in writing cg2d_ini_res)
514    checkpoint54a_pre
515    
516    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
517      - modified verification/lab_sea and natl_box_adjoint accordingly
518    
519    checkpoint54
520    checkpoint53g_post
521    o prepare splitting of thermodynamics: store convect.counter in common block
522    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
523      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
524    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
525    o new parameter "nShapS": allow to treat differently S from T (nShapT)
526    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
527    o restore adjointability
528    
529    checkpoint53f_post
530    o modifications that affect AIM experiment results (update output.txt):
531      - no advection of S at top interface Nr (pkg/generic_advdiff)
532      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
533    o AIM pkg:
534      - include stability function into surf.Flux derivative relative to Tsurf
535      - calculate clear-sky radiation & surface temp. change (for diagnostics)
536    
537    checkpoint53e_post
538    o merged cylindrical coord configuration
539    o added rotating_tank experiment
540    checkpoint53e_pre
541    
542    checkpoint53d_post
543    o faulks upgraded: re-generate output.txt that have changed:
544       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
545    o Added Bryan and Lewis, 1979, vertical diffusivity profile
546    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
547    o added Sadourny discretization of Coriolis
548      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
549      - re-enabled use of omega3 (useAbsVorticity)
550    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
551      vector-invariant equations
552      - note: does *NOT* yet use same variable visc. for no-slip BC's.
553    o recoded the lateral boundary conditions for non-hydrostatic w, this time
554      hopefully without new bugs
555      - still to do: biharmonic friction for non-hydrostatic w
556    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
557    o regenerated output for global_ocean_ebm (using -ieee)
558    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
559      of mom_common/
560      - simple re-arrangement of instructions within computing loop
561    checkpoint53d_pre
562    
563    checkpoint53c_post
564    o new version of coupler for AIM+thSIce and Ocean models
565     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
566     - land: change Evaporation of snow
567     - aim with thSIce: fix bug in snow-precip.
568    o changes to calc_gw.F
569     - bug fix for w^2 term near the bottom boundary
570     - (hopefully) improve the lateral slip boundary condtions for use with
571        partial/looped cells
572      - because the bug fix changes two verification experiments anyway (exp5
573        and plume on slope), change the lateral boundary condition from half slip
574        to the value of no_slip_sides
575    o ebm package wasnt quite up to the parallel task. Fixed that.
576    o Adjoint of EBM package + verification
577      * TLM OK
578      * ADM not sufficient accuracy yet (needs further testing)
579    
580    checkpoint53b_post
581    o Commiting new energy balance model to repository
582      * package is pkg/ebm
583      * verif. is verification/global_ocean_ebm
584      * references are in ebm_driver.F
585    C      * X. Wang, P. Stone and J. Marotzke, 1999:
586    C        Global thermohaline circulation. Part I:
587    C        Sensitivity to atmospheric moisture transport.
588    C        J. Climate 12(1), 71-82
589    C      * X. Wang, P. Stone and J. Marotzke, 1999:
590    C        Global thermohaline circulation. Part II:
591    C        Sensitivity with interactive transport.
592    C        J. Climate 12(1), 83-91
593    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
594    C        Destabilization of the thermohaline circulation
595    C        by atmospheric eddy transports.
596    C        J. Climate 7(12), 1870-1882
597    o Will need long integration testing.
598    checkpoint53b_pre
599    
600    o created pkg/mom_common in preparation for variable viscosity code
601    o renamed and split ini_mnc_io
602    o pkg/land: only liquid water can diffuse or run-off
603    o AIM using land: soil wetness availability account for snow
604    o added printMapIncludesZeros to EEPARMS namelist
605    
606    checkpoint53a_post
607    o restore TAMC compatiility for exf_constants.h
608      (no usage of _d in .h)
609    o Additional storing in KPP in an attempt to fix
610      TAMC problem with adjoint of KPP code.
611      (no success...)
612      Identical code works fine with TAF.
613    o Fixed verification/natl_box_adjoint experiments.
614      Initial conditions for Experiments 4 and 5 are now
615      set to "SEAICE_initialHEFF=0", which is more reasonable,
616      and hence gives results closer to that of Experiment 2.
617      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
618    
619    checkpoint53
620    o stable checkpoint with up to date adjoint
621      TLM tests only run for 1st grdchk at the moment. Its unclear if
622      this is a code problem or a problem with resetting code for g_
623      variables that is being autogenerated wrong.
624      Otherwise:
625       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
626       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
627         are both still in chaos following their security messes.
628    
629    checkpoint52n_post
630    o various build (mostly genmake2) changes including:
631      - ability to build/run more easily within Cygwin and MacOS X
632      - more complicated Makefiles with a stronger dependence on Gnu Make
633    o pkg/seaice modifications
634      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
635        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
636        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
637      - changed proxy for geostrophic velocity and updated
638        verification/lab_sea/results/* accordingly
639      - removed ADI dynamic solver from pkg/seaice
640      - replaced all occurrences of 1/CSTICE or 1/CSUICE
641        they caused a segmentation fault under certain circumstances
642      - removed unused field WATR
643    o bug fix in exf-package:
644      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
645         now reflect that.
646    o small fixes in the cal-package:
647      - set reference date to first of January for the 'model'-calendar
648      - failing of cal_CheckDate in cal_FullDate now actually results in a
649        warning
650    o small modifications in exf-package to increase flexibility:
651      - change climtempfreeze from a constant to a runtime parameter that
652        is specified in data.exf_clim (default = -1.9)
653      - introduce runtime parameter windstressmax (default = 2.0) that is
654        specified in data.exf
655    o fix in pkg/thsice:
656      - update Evap (Tsf changes) to be consistent with Latent heat flux
657      - maintain snow precipitation unchanged (even if Tsf >=0).
658     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
659    
660    checkpoint52m_post
661    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
662      this does not change any of the results, because myIter=0 in swfrac always
663      lead to jwtype=2 (the default anyway), but the call makes little sense
664      as a default
665    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
666    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
667      atmospheric model (AIM) to use it ; add a "slab ocean" component.
668    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
669    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
670    o extending useSingleCpuIO option to work with new exch2 I/O format
671      - old-style, missing-tile I/O is still accessible by defining CPP
672        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
673    o monitor package can write to NetCDF files and/or STDOUT
674    o fix re-definition bug in MNC_GRID_INIT_ALL()
675    o doc/api_reference added
676      - a framework for building an API Reference Manual using all
677        the "protex" comments embedded in the code
678      - see pkg/generic_advdiff, pkg/mnc for examples
679    o MNC:
680      - make myThid the last argument for all subroutines
681      - new default for the grid files: NO halos
682      - add useMNC and other run-time flags
683      - separate per-file-group handling of the unlimited dimension
684      - early initialization of MNC w/ flags read at the eeboot stage
685        and lookup tables set in initialize_fixed
686      - write all MNC output to a freshly-created directory
687    o thermodynamics sea-ice (thsice) is now tested with testreport.
688    o test exp. advect_cs: use the standard cs32 grid ; update output.
689    o Added functionality to grdchk:
690      pick global i,j,k position (or nearest wet) where to perform check.
691    
692    checkpoint52l_post
693    o new land formulation:
694      a) use ground enthalpy as prognostic variable to ensure exact
695         energy conservation.
696      b) account for water temperature and for latent heat of freezing
697         in all processes (rain, run-off, ground storage)
698      c) compute surface and ground temperature implicitly.
699    o aim_v23 modification for new land model:
700      a) Treat separately land / ocean / sea-ice surface fluxes
701         to allow implicit computation of land & sea-ice surface temp.
702      b) add snow precipitation.
703    checkpoint52l_pre
704    
705    o fix problem (when 1 tile is empty) in min/max monitor.
706    o fix bug in timeAve (u,vZetatave in common block)
707    o no restoring terms under ice for pkg/seaice
708    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
709    o bug fix for pkg/seaice pickups
710    o change MNC call locations and add coordinate attributes
711    o mask vorticity at the corner ; affects global_ocean.cs output
712    o fix ini_curvilinear_grid ; test CS experiments with mpi
713    o aim.5l_cs: modify sea-ice fraction input file ; update output
714    o exf: Adding simple range check routine for exf fields after read
715    
716    checkpoint52k_post
717    o removed top-level directory "diags"
718      - we migrated these functions to pkg/timeave a long time ago
719    o fixed bug introduced in pkg/monitor
720    o accuracy ctrlprec = 32 insuffient for gradient checks using
721      averaged fields (I/O via cost_averages)
722      -> use ctrl.h in active_file*.F to control I/O precision.
723    o paramter list of CALL ADTHE_MAIN_LOOP
724    o added initial do_the_model_io to ecco
725    o set all ...Freq to zero after cost_final
726      taveFreq, dumpFreq, pChkptFreq
727    o MAIN and ECCO differentiability restored
728    
729    checkpoint52j_post
730    o fix nchklev in tamc.h for global_ocean...
731    o Bringing flow and store directives up-to-date
732    o Really weird thing!
733      call do_the_model_io from the_main_loop with parameters
734      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
735      TAF places a faulty re-call of initialise_varia
736      after cost_final call which should not be there!
737    checkpoint52j_pre
738    
739    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
740      error messages
741    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
742    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
743      debug output
744    o modfied mdsio_writefield.F to handle non-global files under exch2
745    o update AIM Cubed-Sphere exp (aim.5l_cs):
746      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
747    o update AIM Equatorial Channel exp:
748      use standard aim_v23 pkg and change the SST fields to be more realistic.
749    o globalFile now works with exch2
750    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
751      mon_vort3.F to make exch2 friendly with >1 tile per cube face
752    o limit timeave output for hi-res integrations
753    
754    checkpoint52i_post
755    o removed CPP_EEOPTIONS.h from verification/*/code
756    o updated the tiling for global_ocean_pressure
757    checkpoint52i_pre
758    
759    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
760      the old pkg/aim).
761    
762    checkpoint52h_pre
763    o shortened offending lines in exch2_send_rx?.template
764    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
765    o genmake2: add build & execute test for NetCDF code
766    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
767      old grid files, moved CPP_EEMACROS.h to pkg/exch2
768    o added useSingleCPUIO flag to monitor.F and mon_out.F
769    o added temporary hack for sea-ice dynamics on the cube:
770      metric terms are ignored and it is assumed that
771      there is no sea-ice on cube faces 1, 2, 4, and 5.
772    
773    checkpoint52f_post
774    o added exch2 cube routines to pkg/exch2
775    o modified hs94.cs-32x32x5 to use it
776    o added new grid files to hs94.cs-32x32x5
777    checkpoint52f_pre
778    
779    checkpoint52e_post
780    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
781      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
782    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
783      to work with implicit vertical advection and AB ;
784    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
785    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
786     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
787    checkpoint52e_pre
788    
789    o fix bug in impldiff when Nr=1 or Nr=2.
790    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
791    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
792    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
793      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
794    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
795    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
796    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
797    
798    checkpoint52d_post
799    o re-tiled many expts to allow comparison in multi-processor mode
800      - updated output accordingly
801      - changed hs94.128x64x5 to use intial T from file rather than use the
802        random number generator
803    o add infrastructure in model routines for fizhi and gridalt packages
804    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
805    o changes to permit hi-res, cubed-sphere, configuration
806      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
807      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
808      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
809        of surface winds for the cube
810      (A verification experiment, based on global_ocean.cs32x15, but with
811       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
812       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
813       complete with example surface forcing files and matlab scripts to look
814       at the output and compare it with that of global_ocean.cs32x15.)
815    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
816       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
817       to conform to the common rule.
818    o check-in the first version of the coupler + interfaces for multi-components
819       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
820       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
821       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
822       - ocean and atmos. share the same horizontal grid (no interpolation).
823       - exchanges between component and coupler is done in forward_step
824    o new verification experiment, cpl_aim+ocn:
825       coupled ocean - AIM atmosphere on cs32 grid.
826    
827    checkpoint52d_pre
828    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
829    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
830    
831    checkpoint52c_post
832    o Fixing OPTIONS files for use of exf:
833      - ALLOW_ECCO not needed
834      - ECCO_CPPOPTIONS.h should not be included from
835        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
836        as has been the case in the past
837      - All cal/exf related options are currently set in
838        single header file. Should remain so until we
839        agree on a consistent new policy.
840    o Removed all CPP options for cal package.
841      cal has no more CPP options.
842    o modified STOREs in GAD_ADVECTION
843    o corrected key comp. for passkey
844    
845    checkpoint52b_post
846    o new version: "thsice" of thermodynamic sea-ice pkg:
847     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
848     - modify fluxes but do not change theta directly;
849     - light cleaning of bulk_force pkg (still needed with thsice).
850     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
851       + output_thsice.txt to test thsice & bulk_force pkgs.
852    o put back grid & coriolis monitor output.
853    checkpoint52b_pre
854    
855    o call "do_the_model_io" at the beginning (=> dump initial state)
856    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
857    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
858      (need info on NUMBER_OF_PTRACERS)
859    o missing PTRACERS headers in some routines
860    o default tamc.h in pkg/autodiff supposed to crash
861      to ensure proper customization
862    
863    checkpoint52a_post
864    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
865      - moved surfaceTendencyTice from pkg/seaice to main code
866      - subroutine FREEZE_SURFACE now limits only surface temperature
867        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
868        => new output.txt for global_ocean.cs32x15 & global_with_exf
869      - keep the old version of FREEZE for backward compatibility;
870        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
871      - corresponding modifs for TAF directives
872    o added surface flux output variables to TIMEAVE_STATVARS
873    o time-averaged output for pkg/ptracers
874    o fix problem with ECCO-related divided adjoint
875      snapshot file was missing some ad-variables,
876      but no warning issued by TAF
877    
878    checkpoint52a_pre
879    o some bug fixes for #undef REAL4_IS_SLOW
880    
881    checkpoint52 = ecco_c52_e35
882    o after testing adjoints of checkpoint51u_post
883    
884    checkpoint51u_post
885    o this is the post-merge tag of the ecco-branch
886      (needs another clean checkout and re-testing)
887    o various natl_box_adjoint configs and results
888      but no input fields
889    o obcs adjoint not yet merged!
890    o adding ECCO global 1x1 and 2x2 degree configs
891    o updated/extended some store directives for seaice
892    o pkg/ecco now containes ecco-specific part of cost function
893    o top level routines the_main_loop, forward_step
894      supersede those in model/src/
895      previous input data.cost now in data.ecco
896      (new namelist ecco_cost_nml)
897    o in ctrl/ cleaned some cross-dependencies and updated CPP options
898    
899    checkpoint51t_post
900    o this is the pre-merge tag of the ecco-branch
901    
902    checkpoint51s_post
903    o cleanup: removed various obsolete #define-s
904    o pkg/grdchk
905      - renamed 'ph-grd 3' to 'grad-res'
906      - merged from ecco-branch
907        (remaining bug fixes for obcs gradient checks)
908      - additional high-precision output for testreport
909        (grep for 'precision_grdchk_result')
910    
911    checkpoint51r_post
912    o cleaned up or removed CPP_OPTIONS.h files
913    o updated results for some of the tests to reflect the new
914      optfiles (-ieee: -O0 instead of -O3)
915    
916    checkpoint51q_post
917    o cd_code:
918      - moved cd_scheme.F -> cd_code_scheme.F
919      - separate read_checkpoint from cd_code_ini_vars.F
920      - separated cd_code part from write_checkpoint
921      - updated AD_SOURCE, generated .flow
922      - added CD_CODE_VARS.h to the_main_loop
923      - Moving cd_code specific store dir.s to pkg/cd_code
924    o ctrl package totally restructured
925      - pack/unpack now optional and decoupled from
926        xx_/adxx_ I/O
927      - ctrl_pack/unpack cleaned
928        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
929      - confined inclusion of AD_CONFIG.h to where necessary.
930    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
931    
932    checkpoint51p_post
933    o create initial cd_code package
934      - WARNING: the initialization of fields within packages
935        is broken because INI_FIELDS (where READ_CHECKPOINT is
936        called) is called *before* PACKAGES_INIT_VARIABLES.
937        This seems to be backwards since
938        1) its important to initially zero the entire field including
939           the "halo" region
940        2) zeroing needs to be done *before* reading pickup info
941           and the pickup call might or might not happen in any
942           particular run
943      - this needs an overhaul for R2
944    o cleanup verification/*/code/GMREDI_OPTIONS.h
945    o cleanup testreport
946    
947    checkpoint51o_post
948    o bringing AD-related verif's up to date with genmake2
949      - carbon/
950      - global_ocean.90x40x15/
951      - hs.94.1x64x5/
952      - (front_relax/ )
953    o (more) consistent directory structure for AD-related verif.'s
954    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
955    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
956    o bug fix in find_alpha.F for MDJWF:
957      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
958        change rho -> rho-rhoConst
959      - replace call find_rho to find_rhonum
960    o initialisation of rFlx extended to full array (required by TAF)
961      and shifted to thermodynamics
962    o removed PTRACERS.h in ptracers routine
963    o added surfacetendencyPtr to S/R parameter list pracers_forcing
964    o Correcting initialisations for fVerU, fVerV.
965    o helping TAF to recognize dependency on kUp for
966      fVerU, fVerV
967    o Replacing delZ by delR in pkg/ctrl/
968    checkpoint51o_pre
969    
970    o undid all of cp51 pending some cleanups and discussion
971    o added the [#include "AD_CONFIG.h"] statement to all files that need
972       it for adjoint/tl #defines
973     o re-worked the build logic in genmake2 to support AD_CONFIG.h
974     o removed tools/genmake since it no longer works
975    
976    checkpoint51n_post
977    o modifications to make FREEZE flux visible to pkg/kpp
978      - moved surfaceTendencyTice from pkg/seaice to main code
979      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
980      - subroutine FREEZE now limits only surface temperature
981        (this means new output.txt for global_ocean.90x40x15,
982         global_ocean.cs32x15, and global_with_exf)
983    o added surface flux output variables to TIMEAVE_STATVARS
984    
985    checkpoint51n_pre
986    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
987    o added [#include "AD_CONFIG.h"] to all files that use the following
988      defines:
989      - ALLOW_ADJOINT_RUN
990      - ALLOW_TANGENTLINEAR_RUN
991      - ALLOW_ECCO_OPTIMIZATION
992    
993    checkpoint51m_post
994    o incorporating changes to get TAMC/TAF working in genmake2
995      - added new TAMC/TAF targets to the Makefile
996      - various cleanups related to package handling
997      - these changes should have no impact on the forward model
998    
999    checkpoint51l_post
1000    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1001     - faster algorithm for cal_addtime.F
1002     - higher precision arithmetic, where needed
1003     - pkg/exf *startdate variables changed from calendar date to
1004       model integration time
1005    
1006    checkpoint51l_pre
1007    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1008    o enable to apply restoring on S & T only in a latitude band.
1009    o update output (external_forcing_surf modif. change truncation errors)
1010       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1011    
1012    checkpoint51k_post
1013    o change default to: useNHMTerms=.FALSE.
1014     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1015       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1016     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1017        exp1, ideal_2D_oce
1018     - change data file of oceanic exp (leave the results unchanged for now)
1019       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1020    o set gravitySign automatically according to the vertical coordinate used
1021      (and change sign: back to "logical" value: +1 when R increases downward)
1022    o added an include barrier to the default CPP_OPTIONS.h and
1023      removed the #include "PACKAGES_CONFIG.h" from it
1024    o fix a bug in mom_fluxform (from chk51j_post)
1025    
1026    checkpoint51j_post
1027    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1028    o adjusted some flow directives (dynamics, thermodynamics)
1029    o added cubed-sphere case to test cost function
1030    o heckpoint_lev?_directives.h now include
1031      pkg-specific directives, whenever those are enabled.
1032    o Moving pkg-specific flow directives to corresponding pkg
1033      Moving pkg-specific differentiation list to corresponding pkg
1034      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1035      ---> conventions are
1036           - pkg_ad.flow
1037           - pkg_ad_diff.list
1038           - pkg_ad_check_lev?_dir.h
1039    
1040    checkpoint51i_post
1041    o merge of the branch-genmake2
1042      - knowingly breaks the older genmake
1043      - automatic generation of all ALLOW_${PKG_NAME} defines
1044      - new testreport supersedes older testscript
1045    o large number of package inclusion and header cleanups
1046    checkpoint51i_pre
1047    
1048    o new output for adjoin of global ocean vector invariant
1049    o fix for checkpoint of thermodynamic seaice and bulk_force
1050    o Steph gchem various cleanups
1051    
1052    checkpoint 51h_pre
1053    o fixed some single quotes
1054    o modify gchem pkg to be more versatile
1055    o modifications to clean up dic pkg
1056    o add pkg/cfc
1057    
1058    checkpoint51g_post
1059    o provide links for ARPACK and ADM*TLM
1060    o start removing verification/vero/
1061    o update AD-related stuff
1062      (in particular some IF-statements in model/src/ routines)
1063    o adding to verification/global_ocean.90x40x15/ adjoint of
1064      vector invariant setup
1065    
1066    checkpoint51f_post
1067    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1068    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1069      of tracer Green's fucntions for ocean inversion project.
1070    
1071    checkpoint51f_pre
1072    o Added on-the-fly spatial interpolation capability
1073        "USE_EXF_INTERPOLATION" to pkg/exf.
1074      - This is a temporary Cartesian-grid hack until
1075        the super-duper ESMF coupler becomes available.
1076      - See verification/global_with_exf/README for usage example.
1077      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1078        flags and modified pkg/seaice accordingly.
1079    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1080        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1081        non-local transport term.
1082    
1083    checkpoint51e_post
1084    o pkg/mom_vecinv:
1085      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1086      - add time-ave diagnostic of vorticity advection.
1087    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1088    o atmospheric geopotential: - include water vapor effect;
1089                                - use p^kappa in p* scaling.
1090    o land pkg: read initial state from files.
1091    o AIM : add stratospheric drag in the upper level
1092    
1093    checkpoint51d_post
1094    o change function ILNBLNK (=> last non-blank char.) to return zero
1095      (instead of the string length) when the string. char is empty
1096    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1097    o modif's to restore TAMC compatibility
1098      - avoid "_d" constructs in PARAMETER declarations
1099      - avoid interrupting lines by comment lines
1100    o Use cluster local disks for purely local I/O
1101      vs. globally visible disks needed for ctrl stuff
1102      (merged from ecco-branch)
1103      - new active_file_loc... and mdsio_..._loc routines
1104      - affected packages: autodiff, ctrl, grdchk, mdsio
1105    
1106    checkpoint51c_post
1107    o introducing integer flag debugLevel
1108      - debLevZero: suppress all output
1109      - debLevA: standard
1110      - debLevB: equivalent to current debugMode=.TRUE.
1111    o introducing pathname variable mdsioLocalDir for mdsio
1112      that can be specified at runtime
1113      (relevant for cluster I/O to local disk)
1114    `
1115    >>>checkpoint51b_post
1116    adjoint of ptracers
1117    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1118    o extended state in checkpoint_lev?, etc.
1119    o alternative ctrl/cost with tr1 or ptracer
1120    o new comlev1_bibj_ptracers
1121    o new ptracers.flow
1122    o made ptracers_forcing same as external_forcing_s
1123    o added verification for adjoint with ptracers
1124      - adm. grdchk fail so far
1125      - tlm. grdchk OK
1126      - checked tapelev/comlev recomputations: OK
1127    <<<checkpoint51b_pre
1128    
1129    checkpoint51a_post
1130    o added code for biogeochemistry package
1131      - new pkgs: dic, gchem
1132      - new subroutine in ptracers
1133    o modify code for biogeo packages
1134      - in model/src and pkg/ptracers
1135    
1136    checkpoint51
1137    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1138      - autodiff, ctrl, exf, grdchk, seaice
1139      kept separate packages
1140      - cost, ecco, obcs
1141    o updating verification/internal_wave, verification/lab_sea
1142      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1143    
1144    checkpoint50i_post
1145    o Preparing next differentiable checkpoint and sync
1146      of MAIN vs. ecco-branch
1147      - 1st step: this one is differentiable
1148      - 2nd step: next(! not this) checkpoint will have updated packages
1149                  from ecco-branch)
1150    
1151    checkpoint50h_post
1152    o new package "land": provide surface BC for AIM.
1153    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1154    o AIM: use true log-P extrapolation for near surface temp (= as in
1155        F.Molteni paper) ; update aim.5l_cs output.
1156    o New variable in PARM03 for more flexible pickups
1157    o somewhat cleaned package initialisation sequence for
1158      ctrl/ cost/ ecco/ in packages_... routines
1159    
1160    checkpoint50g_post
1161    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1162      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1163      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1164        made the default because of faster convergence than ADI
1165    
1166    checkpoint50f_post
1167    o exf totally restructured
1168      - replaced all exf_set_ routines by one generic exf_set_gen.F
1169        and made sure it's still differentiable
1170      - split exf_getffields.F into new exf_bulkformulae.F
1171      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1172      - updated adjoint/makefile and relevant verif. accordingly
1173    
1174    checkpoint50f_pre
1175     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1176          + change Evap over land. (update aim.5l_cs output)
1177     o added missing .cvsignores and made uniform across expts
1178     o changed configuration of tidal_basin_2d expt
1179     o added pkg/debug functions for tracing code in fatal crashes
1180     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1181     o new fn in pkg/monitor to stop model if solution grows too big
1182     o removed lots of single quotes from comments
1183    
1184    checkpoint50e_post
1185    o make KPP work with PTRACERS
1186     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1187       nearly a copy of kpp_transport_s
1188     - there is no analogue to SurfaceTendencyS, so I have to use
1189       gPtr(of the surface layer) instead
1190    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1191    checkpoint50e_pre
1192    
1193    checkpoint50d_post
1194    o change kpp output from multiple-record state files to single-record state
1195      files analogous to write_state.F
1196    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1197      analogous to the cg2d-related output.
1198    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1199      so that writing to internal file fn (with length 512) fails.
1200    checkpoint50d_pre
1201    
1202    checkpoint50c_post
1203    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1204    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1205    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1206    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1207    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1208    
1209    checkpoint50c_pre
1210    Merging from release1_p13:
1211    o bug fix for pkg/seaice dynamic solver
1212    o Added SEAICE_initialHEFF to pkg/seaice
1213    
1214    checkpoint50b_post
1215    o store u*,v* in gU,V instead of in guNm1,gvNm1
1216    o in order to put the momForcing out of the Adams-Bashforth:
1217      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1218      to timestep.F
1219    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1220    o re-generate output for highly sensitive test-exp:
1221       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1222    
1223    checkpoint50b_pre
1224    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1225    o corrected CPP option mismatch in exf_Bulk... functions for case
1226      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1227    
1228    checkpoint50a_post
1229    o Bug fix for merging between c50 and KPP.
1230      ikey was passed from thermodynamics to kpp_calc via
1231      common block rather than being recomputed in kpp_calc,
1232      in contradiction with new key itdkey.
1233      New key ikppkey created, and tamc.h headers updated.
1234    
1235    checkpoint50
1236    - 2nd step of merge with ecco-branch:
1237      merge changes in ecco-branch back into main trunk
1238    - bug fix in find_alpha
1239    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1240    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1241    - merged some sliced AD support routines
1242    
1243    checkpoint49
1244    merged from ecco-branch:
1245    o exf:
1246      - Enable initialisation of forcing fields to constant
1247        (runtime) values.
1248      - in exf_getffields.F
1249        Reduce i-/j-loop to interior domain, discarding overlaps.
1250        That also fixes wrong TAF-key computations for key_1, key_2
1251        with bulf formulae.
1252      - exf_init.F modify #ifdef for exf_init_evap
1253      - exf_getffieldrec.F, ctrl_getrec.F
1254        The following INT-usages are not safe:
1255          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1256          fldcount = int(fldsecs/fldperiod) + 1
1257        and were modified.
1258    o autodiff: checkpoint_lev...
1259      - updated storing for bulk formulae (some arrays were missing)
1260      - added state for seaice package
1261      - synchronized with main branch
1262    o DIVA:
1263      Modif.s in
1264      - the_main_loop.F
1265      - the_model_main.F
1266      and added cost_final_restore.F cost_final_store.F
1267      o With these changes, it is possible to fully separate
1268        the first forward run to compute the cost function (mdthe_main_loop)
1269        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1270        into separate model executions.
1271        This enables better tuning of DIVA to given queue sizes.
1272      o Loss of cost function value in consecutive DIVA runs is
1273        fixed by storing to 'costfinal' file.
1274      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1275        beginning/end of adjoint integration is accounted for.
1276      The current changes apply to TAF-1.4.26.
1277      TAF has one remaining bug, requiring one manual change
1278      (see MITgcm manual).
1279    o cal: synchronized between MAIN and ecco-branch
1280    
1281    checkpoint48i_post
1282    o Changes to restore differentiability of code w.r.t. previous tag
1283      (mostly adding new routines to make list and replacing
1284      pressure by totPhiHyd).
1285    o Updated and merged grdchk package
1286      - has both ADM and TLM checks
1287      - works for single- and multi-proc.
1288      - output cleaned
1289      - worked successfully for parallel DIVA
1290    o genmake:
1291      - Adding -platform=SP4
1292      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1293    o Modif. for DIVA:
1294      ctrl_unpack should not be called in intermediate DIVA interval.
1295      (similar thing would apply for active files such as
1296      tbar, sbar, psbar, which should not be reinitialised;
1297      only relevant for ecco-branch)
1298    
1299    checkpoint48h_post
1300    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1301    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1302    o Added SEAICE_initialHEFF to pkg/seaice
1303    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1304    
1305    checkpoint48g_post
1306    --- EOS:
1307    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1308      store total Potential in totPhyHyd for diagnostics & EOS.
1309    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1310    --- Pressure/geopotential gradient:
1311    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1312    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1313      ( changes results of global_ocean_pressure )
1314    o NLFS + z-coord.: add eta*Rho' contribution.
1315    o accurate phiHyd when using interface-W at the middle between 2 centers
1316     ( changes results of ideal_2D_oce )
1317    o includes r* 2nd term in potential gradient.
1318    
1319    checkpoint48f_post
1320    Merging from release1_p12:
1321    o Modifications for using pkg/exf with pkg/seaice
1322      - improved description of the various forcing configurations
1323      - added basic radiation bulk formulae to pkg/exf
1324      - units/sign fix for evap computation in exf_getffields.F
1325      - updated verification/global_with_exf/results/output.txt
1326    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1327      (SBO) core products, including oceanic mass, center-of-mass,
1328      angular, and bottom pressure (see pkg/sbo/README.sbo).
1329    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1330      to avoid negative values in shallow regions.
1331      - updated verification/natl_box/results/output.txt
1332      - updated verification/lab_sea/results/output.txt
1333    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1334    o Added useSingleCpuIO option (see PARAMS.h).
1335    o Updated useSingleCpuIO option in mdsio_writefield.F to
1336      work with multi-field files, e.g., for single-file pickup.
1337    o pkg/seaice:
1338      - bug fix in growth.F: QNET for no shortwave case
1339      - added HeffFile for specifying initial sea-ice thickness
1340      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1341    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1342      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1343    o pkg/seaice:
1344      - adjoint-friendly modifications
1345      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1346    
1347    checkpoint48e_post
1348    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1349    o dynamics: change definition of computational domain & adapt mom_fluxform
1350      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1351    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1352        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1353        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1354        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1355        inverted_barometer solid-body.cs-32x32x1
1356      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1357    
1358    checkpoint48d_post
1359    o in preparation for r*:
1360     a) use pre-computed gradient of hydrostatic potential:
1361        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1362     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1363        => affects results of glob_oce_pressure (different truncation error)  
1364      update output.txt of ideal_2D_oce & global_ocean_pressure
1365    
1366    checkpoint48d_pre
1367    o in preparation for r*:
1368      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1369      pass the 2 comp. of the grad. as arguments to momentum S/R.
1370      but for the moment, only used if it does not change the results.
1371    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1372    
1373    checkpoint48c_post
1374    Modifications in treatment of initial flux forcing controls
1375    to avoid extra storing of flux fields.
1376    
1377    checkpoint48c_pre
1378    o Added tidal_basin_2d experiment (currently 1D!)
1379    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1380    
1381    checkpoint48b_post
1382    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1383     (modification to pressure gradient not yet implemented)
1384    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1385      (for U & V) that are used for vertical advection of momentum.
1386    
1387    checkpoint48a_post
1388    o In preparation for r*, use temp. array to compute vertical transport
1389       in flux-form momentum pkg. => change results of few test-exp.
1390      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1391                        lab_sea, natl_box & plume_on_slope
1392    
1393    checkpoint48
1394    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1395    
1396    checkpoint47j_post
1397    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1398    o moved adexch from forward_step to addummy_in_stepping
1399    o added exch in ctrl_map_...
1400    o aveFreq.=0. at end of cost_final to avoid overwrite in
1401      reverse checkpointing loop
1402    o Yet more changes in gmredi:
1403      * adgmredi_calc_tensor
1404        avoiding all recomputation of gmredi_slope_limit
1405      * adgmredi_x/y/rtransport
1406        added flag for excessive storing to avoid recomp. of
1407        u/v/rtans, dTdx/y/z
1408        -> this is not really necessary and very memory-consuming
1409      * adgmredi_slope_psi:
1410        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1411      * gmredi_slope_limit
1412        re-activated full calculation of taperfct for case 'ac02'
1413    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1414    
1415    checkpoint47i_post
1416    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1417    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1418      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1419    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1420    o gmredi: fix few bugs.
1421    
1422    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1423    This will be a good checkpoint to plug into the ecco-branch.
1424    o few modif.'s to get latest version adjointed
1425      (mainly kick out code in ini_linear_phisurf)
1426    o modif's to run adjoint with exactConserv
1427    o case GM_BOLUS_ADVEC should be cleaned
1428      S/R gmredi_slope_psi should be cleaned
1429    o verification/carbon now has exactConserv=.TRUE.
1430    
1431    checkpoint47g_post
1432    o time-average AIM output: becomes independent from statvars time-average
1433      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1434    o After TAF bug fix:
1435      Tested adjoint of gmredi package.
1436      Tests were done with checkpoint47 rather than with latest
1437      checkpoint47f_post since the latter is broken for the adjoint
1438      verification/carbon/ contains both ADM and TLM gradient checks.
1439    Here they are, before they get changed/lost/stolen.
1440    Mostly modif.'s to fix numerical sensitivities.
1441    Gradient checks OK for
1442    - GM_taper_scheme:
1443      * clipping
1444      * ac02
1445      * linear
1446      * glw91
1447      * dm95
1448      * ldd97
1449    - GMREDI_OPTIONS:
1450      * GM_VISBECK_VARIABLE_K
1451      * GM_NON_UNITY_DIAGONAL
1452      * GM_EXTRA_DIAGONAL
1453      * GM_BOLUS_ADVEC
1454    in conjunction with data.gmredi parameters to be checked in
1455    in a few minutes under verification/carbon/code/
1456    
1457    checkpoint47f_post
1458    Merging from release1_p10:
1459    o modifications for using pkg/exf with pkg/seaice
1460      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1461        and SEAICE_EXTERNAL_FLUXES
1462      - pkg/exf CPP options EXF_READ_EVAP and
1463        EXF_NO_BULK_COMPUTATIONS
1464      - usage examples are Experiments 8 and 9 in
1465        verification/lab_sea/README
1466      - verification/lab_sea default experiment now uses
1467        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1468    
1469    checkpoint47e_post
1470    o created a tag prior to creating a branch
1471    
1472    checkpoint47d_post
1473    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1474      at the bottom boundary had an erroneous half slip boundary condition
1475    o added bottom drag and no slip boundary condition capabilities to
1476      oceanic pressure coordinates code
1477    o added new verification experiment global_ocean_pressure, this experiment is
1478      also described in the tutorial section of the manual
1479    checkpoint47d_pre
1480    
1481    checkpoint47c_post
1482    o Added a verification experiment for a global cubed-sphere ocean run
1483      -  verification/global_ocean.cubed32x32x30
1484      -  uses pkg/therm_seaice and pkg/bulk_forcing
1485    
1486    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1487    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1488      when using P-coordinate; only implemented for atmospheric config.
1489    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1490      NOTES: requires option NONLIN_FRSURF to be "#define".
1491    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1492    
1493    checkpoint47b_post
1494    Merging from release1_p9:
1495    o pkg/seaice
1496      - removed GOTO's and added taf directives
1497      - double precision constants to reduce the g77 (Linux)
1498        to F77 (SGI) differences reported in release1_p8
1499    o tools/genmake
1500      - added SGI options
1501    o verification/testscript
1502      - updated to that of checkpoint47a_post
1503    o verification/global_ocean.90x40x15/input/eedata
1504      - modified for SGI f77 compatibility
1505    o verification/lab_sea
1506      - added description of sea-ice model
1507      - added missing matlab routines
1508      - added test of thermodynamics parallelization
1509    
1510    checkpoint47a_post
1511    o new pkg: aim_v23
1512     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1513       for now, keep the same surface forcing as before.
1514     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1515     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1516     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1517    o add diagnostic of surface correction term in monitor output
1518    
1519    o bulk_force and therm_seaice
1520    - Two packages:  bulk_force (Bulk forcing)
1521      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1522    - Earlier integration from Stephaine Dutkiewicz
1523      and Patrick Heimbach.
1524    - Two ifdef statements for compile time,
1525       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1526    
1527    checkpoint47
1528    differentiable version of checkpoint46n_post
1529    o bug fix in quasihydrostaticterms
1530    o * "clean" adjoint code (in terms of extensive recomputations)
1531        can now be obtained for all GMREDI options (i.e. for
1532        - GM_VISBECK_VARIABLE_K
1533        - GM_NON_UNITY_DIAGONAL
1534        - GM_EXTRA_DIAGONAL
1535        - GM_BOLUS_ADVEC )
1536      * However, wrong gradient check problem remains unsolved.
1537      * New CPP options have been introduced for different
1538        tapering schemes
1539    o external_fields_load now part of differentiation list
1540    o pressure needs multiple storing;
1541      would be nice to have store_pressure at beginning or
1542      end of forward_step, e.g. by having phiHyd global (5-dim.)
1543      (NB: pressure is needed for certain cases in find_rho,
1544      which is also invoked through convective_adjustment).
1545    o recomputations in find_rho for cases
1546     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1547    o #define ATMOSPHERIC_LOADING should be differentiable
1548    o ini_forcing shifted to begining of initialise_varia
1549    o Incorporating QNVS line search routines into MITgcm
1550      (this is separate code, and therefore not under pkg)
1551      lsopt/, optim/
1552    o Updated verification/carbon/
1553      - #define GM_VISBECK_VARIABLE_K
1554      - GM_taper_scheme    = 'ldd97'    
1555    
1556    checkpoint46n_post
1557    Merging from release1_p8:
1558    o verification/natl_box:
1559      updating new external_fields_load routine
1560    o New package: pkg/seaice
1561      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1562      The sea-ice code is based on Hibler (1979-1980).
1563      Two sea-ice dynamic solvers, ADI and LSR, are included.
1564      In addition to computing prognostic sea-ice variables and diagnosing
1565      the forcing/external data fields that drive the ocean model,
1566      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1567      The implied surface heat flux is then stored in variable
1568      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1569      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1570      non-local transport term.  Because this call precedes model
1571      thermodynamics, temperature under sea-ice may not be "exactly" at
1572      the freezing point by the time theta is dumped or time-averaged.
1573      N.B.: fairly large differences in accuracy occur across
1574            different platforms/compilers; comparison between
1575            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1576            generated output gives:
1577       T           S           U           V
1578      C D M    c        m  s        m  s        m  s        m  s
1579      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1580      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1581      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1582    
1583      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1584    o GAD:
1585      - generated new common blocks to account for call of
1586        same gad routines with differing traceridentities
1587        (needed to modify tracerIdentity indices in GAD.h)
1588      - generated separate common blocks for case useCubedSphereExchange
1589        (Department of Futurology)
1590      - parameter lists to gmredi_?transport: added tracerIdentity
1591      - added new key indices to tamc.h
1592    o external_fields_load:
1593      - added this routine to TAF list
1594      - needed to make some common blocks global and additional storing
1595        along the same lines as exf package (checkpoint_lev?_directives.h)
1596    o exf:
1597      updated external forcing package
1598      - bug fixes carried over from ecco-branch
1599        (missing OBCS_OPTIONS.h in two routines)
1600      - enable easy to use "no forcing".
1601      - added exf I/O for atmospheric loading
1602      - added exf I/O for runoff data
1603      - transfered scaling between exf <-> MITgcm to exf namelist
1604    o Adding new verification experiment global_with_exf.
1605      This verification experiment is almost identical to the
1606      global_ocean.90x40x15 experiment, except that it uses
1607      the exf (and cal) package instead of the
1608      external_fields_load routine (cf README file).
1609    
1610    checkpoint46m_post
1611    o modified testscript to return -- when there are no lines of "%MON" output
1612    o added new flag "quasiHydrostatic" for QH mode
1613      and new routine quasihydrostaticterms()
1614    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1615      New routine: mom_u_coriolis_nh()
1616    o fixed sign of non-hydrostatic metric terms in u and v equations.
1617      Depend on correct sign of gravitySign.
1618    o added work.pc* to .cvsignore in aim directories using ifc
1619    o introduced flag for controllin non-hydrostatic metric terms
1620    o removed gravitySign from PARM04
1621    o switched to g77/ifc from pgf77 in aim experiments
1622    
1623    checkpoint46l_post
1624    o made convective adjustment work with pressure coordinates:
1625     - changed the direction of k-loop in convective_adjustment.F for the
1626       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1627     - adjusted the reference pressure k-index in convective_adjustment.F
1628     - adjusted the convection condition in convect.F (in analogy to
1629       calc_ivdc.F)
1630     - convective_adjustment no longer computes anything on the halos
1631     - removed the warnings about negative salinity from find_rho.F and
1632       find_alpha.F; instead the new routine look_for_neg_salinity, called
1633       at the beginning of find_rho, find_alpha, and find_beta, does a
1634       check of the entire slice, if CPP-option
1635       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1636    checkpoint46l_pre
1637    
1638    checkpoint46k_post
1639    o fixed the verification/global_ocean.90x40x15 experiment:
1640     - new bathymetry (the world according to A., JMC, and M.)
1641     - new initial fields and forcing fields (*.bin files)
1642     - new POLY3.COEFFS (for the next release one should switch to a full
1643       equation of state: JMD95P or MDJWF)
1644     - fixed several errors and redundancies in the data file
1645     - experiment uses looped cells
1646     - added matlab directory with diagnostic scripts for plotting of output
1647    
1648    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1649     - read AIM physics parameters from a file (data.aimphys)
1650     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1651    
1652    checkpoint46j_post
1653    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1654    o move wVel computation at the end of the time step, in S/R integr_continuity
1655    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1656    o update timeave pkg for wVel diagnostic.
1657    checkpoint46j_pre
1658    
1659    checkpoint46i_post
1660    o Clean up AIM package (and keep the results unchanged):
1661      include CPP_OPTION and use IMPLICT NONE in all routines ;
1662      declare all the variables _RL ; use _d 0 for all numerical constants.
1663      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1664    
1665    checkpoint46h_post
1666    o cleaned up the use of rhoNil and rhoConst.
1667      - rhoNil should only appear in the LINEAR equation of state, everywhere
1668        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1669        and the dynamical equations are all divided by rhoConst
1670    o introduced new parameter rhoConstFresh, a reference density of fresh
1671      water, to remove the fresh water flux's dependence on rhoNil. The default
1672      value is 999.8 kg/m^3
1673    o cleanup up external_forcing.F and external_forcing_surf.F
1674      - can now be used by both OCEANIC and OCEANICP
1675    checkpoint46h_pre
1676    
1677     Added code to convert surface volume flux (fresh water) into
1678     a mass flux when using P coordinates in the ocean (OCEANICP).
1679     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1680    
1681    checkpoint46g_post
1682    o Include a new diagnostic variable phiHydLow for the ocean model
1683      - in z-coordinates, it is the bottom pressure anomaly
1684      - in p-coordinates, it is the sea surface elevation
1685      - in both cases, these variable have global drift, reflecting the mass
1686        drift in z-coordinates and the volume drift in p-coordinates
1687      - included time averaging for phiHydLow, be aware of the drift!
1688    o depth-dependent computation of Bo_surf for pressure coordinates
1689      in the ocean (buoyancyRelation='OCEANICP')
1690      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1691        Theta, Salinity, and Pressure in the parameter list. This routine is
1692        presently contained in find_rho.F. This routine does not give the
1693        correct density for 'POLY3', which would be a z-dependent reference
1694        density.
1695    o cleaned up find_rho
1696      - removed obsolete 'eqn' from the parameter list.
1697    o added two new verification experiments: gop and goz
1698      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1699    checkpoint46g_pre
1700    
1701    checkpoint46f_post
1702    o Enable tangent linear (forward mode) gradient checks:
1703      - extended active file handling to g_... files
1704      - added TANGENT_SIMULATION to theSimulationMode
1705      - extended grdchk package accordingly
1706    o added tangent linear setup in verification/carbon/code_ftl
1707    o added adjoint setup in verification/front_relax/code_ad
1708    
1709    checkpoint46e_post
1710    o Added new equation of state -> MDJWF
1711      - EOS of McDougall et al., 2002, JAOT, submitted
1712      - caveat: the equation of state is only valid for a smaller (more
1713        realistic?) range of values than JMD95P/Z and UNESCO
1714      - added masks to the calculation of pressure in store_pressure
1715      - added more check values for density in check_eos (ini_eos.F), some of
1716        the old check values are out of the range of the MDJWF-eos, so don't
1717        expect perfect matches for those
1718    checkpoint46e_pre
1719    
1720    checkpoint46d_post
1721    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1722      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1723      case of pressure coordinates. eosType='JMD95Z' in
1724      combination with buoyancyRelation='OCEANICP' now causes an error.
1725    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1726      in find_alpha/beta.
1727    checkpoint46d_pre
1728    
1729    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1730      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1731    
1732    checkpoint46c_post
1733    o Changes necessary for ocean in p-coordinates
1734     -  Added new buoyancy relation = 'OCEANICP'
1735     -  Added new parameters = gravitySign (this used to be contained inside
1736        the factor dRdZ which I added when we first switched to R coordinates).
1737     X GM/Redi is not compatible (yet)
1738     X bottom drag and no-slip need to be debugged.
1739    checkpoint46c_pre
1740    
1741    checkpoint46b_post
1742    o Added new equation of state -> JMD95Z and JMD95P
1743      - EOS of Jackett and McDougall, 1995, JAOT
1744      - moved all EOS parameters into EOS.h
1745      - new routines ini_eos.F, store_pressure.F
1746    o Added UNESCO EOS, but not recommended because it requires
1747      in-situ temperature (see JMD95)
1748    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1749      unesco.f to be used with POLY3
1750    checkpoint46b_pre
1751    
1752    checkpoint46a_post
1753    o Added (atmospheric) pressure loading
1754      - new field in FFIELDS.h, etc...
1755      - new cpp flag ATMOSPHERIC_LOADING
1756    o Changed hFacC to _hFacC in calc_phi_hyd.F
1757    o Added SHORTWAVE_HEATING to some files for consistency
1758    checkpoint46a_pre
1759    
1760    checkpoint46
1761    further merges from release1_p5
1762    o new ctrl package
1763      - adopted from ECCO environment to enable optimization
1764      - added Eliassen Palm fluxes to controls
1765    o added Eliassen Palm flux controls to gradient check package
1766    o cost package
1767      - Compatible with new ctrl package
1768      - added Eliassen Palm cost hooks
1769      - modif's of existing cost functions
1770    o Adjoint-related bug fixes in kpp:
1771      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1772      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1773    o autodiff package
1774      - flow directives:
1775        + new for S/R do_the_model_io
1776        + enhanced for S/R checkpoint
1777        + new gmredi.flow
1778      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1779        disable adcommon.h/g_common.h by default.
1780      - fixed problem for adjoint of global_max
1781    o modified verification/carbon/
1782    o New setup for adjoint of global_ocean
1783    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1784    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1785    o incorporated hooks for sponge layer code (external_forcing.F)
1786    
1787    checkpoint45d_post
1788    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1789    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1790      (affects plume_on_slope "cg2d" output)
1791    o add new parameter deltaTfreesurf for free-surface time stepping
1792    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1793    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1794    o change phiMin in exp1 (to agree with documentation)
1795    o add new flags:
1796     - T,S forcing inside/outside Adams-Bashforth
1797     - turn off temp,salt advection and/or forcing
1798     - for each tracer, define internal flag for multiDimAdvection & A-B
1799    o monitor: change definition of KE to check conservation of Energy
1800    
1801    checkpoint45c_post
1802    o Removed f90 comments ("!")
1803    o Modified initialisations to enable exf package for MITgcm
1804      (without invoking ECCO_PACKAGE).
1805    o modifications to gradient check package (Martin Losch)
1806      - enable centered differences
1807      - modified format of standard output
1808    
1809    checkpoint45b_post
1810    o cleaned exchange calls in cg2d
1811    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1812    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1813      to configure barotropic setup (Martin Losch)
1814    o moved some initialisations within bi,bj loop in dynamics
1815      (TAF flow dependency)
1816    o in initialise_varia, moved call packages_init_variables
1817      before convective_adjustment_init
1818      (corresponding adjustment of TAF tape initialisation).
1819    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1820    
1821    checkpoint45a_post
1822    o compute Rho over the whole domain (extend iMin,jMin indices)
1823    o specific exchange for X-slice domain (case Ny=1)
1824    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1825    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1826    
1827    checkpoint44h_post = checkpoint45
1828    o Fix to restore differentiability:
1829      place at which packages_init_variables is called in
1830      initialise_varia is crucial for reverse control flow.
1831    o modifications in GMRedi to enable stable adjoint
1832      (corresponding modif's in thermodynamics, dynamics)
1833    o added missing hook for sponge layer code in external_forcing
1834    o modified test cost functions
1835    o storing in gad_advection (plus removal of write(0,*)!
1836    o missing headers TR1.h added in convective_adjustment routines
1837    o errorMessageUnit set non-equal zero in eeboot
1838      (conflict on some platforms, e.g. IBM SP3)
1839    o modified carbon verif.
1840    
1841    checkpoint44h_pre
1842    o vertical grid option: allow to put the Interface at the middle between
1843      2 cell-centers ; replace delZ in pkg/kpp by drF.
1844    o GM Advective form: Tracers are advected using the residual transport (=
1845      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1846    
1847    checkpoint44g_post
1848    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1849      results) ; ifdef missing in thermodynamics.F
1850    
1851    checkpoint44f_pre,checkpoint44f_post
1852    o added PTRACERS package
1853      This allows an arbitrary number of passive tracers to be integrated
1854      forward simultaneously with the dynamicaly model.
1855      + Implemented so far:
1856        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1857        - I/O and checkpointing
1858        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1859      + Not implemented so far:
1860        - KPP
1861        - OBCS
1862      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1863        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1864        line in data.pkg.
1865      + This package is disabled by default since it increases storage.
1866    
1867    
1868    o testscript: added -cleanup option
1869    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1870                 b) enable to filter 2D fields.
1871    
1872    checkpoint44e_pre,post
1873    o re-wrote convective adjustment to use pre-calculated weights
1874      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1875      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1876      Original calls to convect() still in place.
1877    
1878    chkpt44d_pre,post
1879    o added missing EXCLUDE_MONITOR flags
1880    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1881      (incompatible typ in MIN/MAX expressions caused problems
1882      on IBM SP3)
1883    o in genmake added variable MAKEDEPEND
1884      plus resetting for case SunOS
1885    o added timer_stats.c routine for IBM SP3
1886    o removed variables in dynamics
1887    !!! I forgot to create tag chkpt44d_pre !!!
1888    !!! But chkpt44d_pre = chkpt44c_post    !!!
1889    
1890    o real fresh water flux implemented with non-linear free-surface.
1891    
1892    chkpt44c_pre,post
1893    o few fix (mask in shap_s2, EmPmR in external_field_load,
1894      USE_NATURAL_BCS in solve_for_P);
1895    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1896    
1897    checkpoint44b_pre/_post
1898    o merge of relevant stuff from the ecco-branch:
1899      - genmake: removed $S64 overwrite for case SunOS
1900      - pkg/exf: update and corrections for field swapping and obcs
1901      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1902                  harmonized between ECCO and MITgcm
1903      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1904                      updated checkpointing_lev... lists for obcs
1905      - model/src: minor changes in forward_step, plot_field
1906                   added directive for divided adjoint in the_main_loop
1907      - pkg/mdsio: added mdsio_gl_slice
1908    
1909    o check parameters & config (chkpt44a_pre,post)
1910    o OBC and NonLin_FrSurf.
1911    
1912    checkpoint44
1913    o fix bug in mom_vi_del2uv
1914    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1915    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1916    o update AIM experiments (NCEP input files)
1917    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1918    o added some stuff for AD
1919    
1920    checkpoint43
1921    o added two new advection tests
1922    o added global 4x4 degree ocean test
1923    o added test of H&S94 with free surface on cube
1924    o some final mods for gradient check, adjoint,...
1925    
1926    checkpoint42
1927      Fixed AD-related problems:
1928    o Store directives up-to-date with re-arranged Adams-Bashforth
1929      (mainly thermodynamics.F)
1930    o New store directives for multi-dim. advection schemes
1931      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1932      * new common block and key passkey
1933      (mainly gad_advection.F)
1934    o Modified store directives for split of dynamics/thermodynamics
1935      for the case ALLOW_KPP
1936    o Cleaned argument list for timestep_tracer.F
1937    
1938    checkpoint41
1939    o re-formatted/added comments in prologues of key subroutines
1940      to work with protex
1941    
1942    checkpoint40
1943    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1944    o added FLT (floats) package from Arne along with demo. experiment
1945    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1946      implementation of forward-in-time forcing terms
1947    o more mods for non-linear free-surface including new variable
1948    o modified multi-dim method to work on cube
1949    o bug fix in KPP (from DM)
1950    
1951    checkpoint40pre9
1952    o added DST advection schemes
1953    o fix MPI bug on SGI's
1954    o modifications for non-linear free-surface
1955    o fixed conditionals for fixed flow/passive tracer only mode
1956    o added tension/strain form of stress tensor
1957    o changes to commenting of arguments for TAF/TAMC
1958    o added/updated many matlab scripts
1959    o added multi-dimensional advection method for tracers
1960      
1961    checkpoint40pre8
1962    o new package rw/
1963      Added method for dumping intermediate local arrays:
1964      mdsio_writetile - same as mdsio_writefield except works from inside
1965                        bi,bj loop
1966      mdsio_writelocal - same as mdsio_writetile except works for local
1967                         arrays
1968      write_local_r? - higher-level wrapper for mdsio_writelocal
1969      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1970      Example given at end of mom_vecinv.F that dumps some local arrays.
1971    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1972      control flux-form versus vector invariant code.
1973      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1974      or genmake -DISABLE ...
1975    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1976      (additional storing is now needed for case vecinv;
1977      currently nothing implemented to switch this storing off
1978      in case fluxform is used since no CPP flag available).
1979    
1980    checkpoint40pre7
1981    o bug fix in dynamics.F
1982      calc_viscosity called before k=1,Nr loop.
1983    o added some #ifdef's ALLOW_PASSIVE_TRACER
1984    o cleaned initialisations in ctrl_map_ini
1985      related to TAF
1986    
1987    checkpoint40pre6
1988    o split dynamics into thermodynamics & dynamics
1989    o corresponding split of calc_diffusivity into
1990      calc_diffusivity, calc_viscosity
1991      (kpp_calc_diff, kpp_calc_visc).
1992    o Added diffkr, kapgm to control variables
1993    o bug fix in gmredi_slope_limit for ldd97
1994    
1995    checkpoint40pre5
1996    o proper initialization of Adams-Bashforth time stepping
1997      + uses forward step for very first step of model (iter=0)
1998    o re-generated *all* output since almost all output is modified by this
1999      change (sorry but we've been putting this one off for about 2 years)
2000      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2001        *not* regenerated since they are already out of date and I don't
2002        want to create the impression that they are suddenly working.
2003    o removed KAP stuff for DEC's
2004    o modified/added many .cvsignore files in */code and */input
2005    o added new expt "solid-body.cs-32x32x1"
2006      + this uses an alternative form of ini_curvilinear_grid.F which
2007        is not necessarily any better than the current one...
2008    
2009    checkpoint40pre4
2010    o added re-initialisations of utrans,vtrans,rtrans in
2011      calc_common_factors which are crucial for TAF.
2012    o extended iMin,jMin range for calc_common_factors,
2013      calc_diffusivity
2014    o added option ALLOW_PASSIVE_TRACER
2015    o a few minor updates and fixes
2016    
2017    checkpoint40pre3
2018    o created calc_gtr1.F for gad package
2019    o split the_main_loop and re-introduced forward_step
2020    o some recomputations of nIter0 for TAMC
2021    
2022  checkpoint40pre2  checkpoint40pre2
2023  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
2024  o Added gradient check package  o Added gradient check package

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