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revision 1.6 by adcroft, Mon Jun 22 16:09:37 1998 UTC revision 1.467 by adcroft, Mon Mar 28 15:48:14 2005 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o introduced an alternative length scale calculation for use in the limiting
7      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
8    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
9    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
10      as well as grad(vort3).  Made it compatible with both approximate form
11      for the cubed sphere and full form of these gradients.  Added flag
12      useFullLeith to select between approximate and full form.  
13    o add "d0" in getcon.F to reduce differences between compilers/platforms
14      update output.txt of exp. fizhi-gridalt-hs
15    o change port_rand funtion to allow to set the seed.
16    o fix obscure MNC bug involving conversion between reals and integers
17      - it caused no problems with certain (eg. gcc, ifc) compilers but the
18        new version is now more standards-compliant
19    
20    checkpoint57e_post
21    o Adding eddy stress controls a la Ferreira et al.
22    checkpoint57e_pre
23    
24    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
25      update output.txt of exp. fizhi-gridalt-hs
26    o add more "Z" dimensions and associated coordinate vars to MNC
27    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
28    o parameter calendarDumps: when set, approximate months (30-31 days) and years
29      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
30      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
31      months and years.  Requires pkg/cal.
32    o diagnostics: add pickup functionality
33      - off by default for backwards compatibility
34      - current version only uses MDSIO -- MNC will be added
35    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
36    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
37    
38    checkpoint57d_post
39    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
40    o modify verification/ideal_2D_oce so that it tests the creation of mnc
41      output from the diagnostics package
42    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
43    o make genmake2 more portable by using ".$FS" instead of ".f" for more
44      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
45    o add coordinate variables to the MNC output from the diagnostics package
46    o change MNC-flags default value: true when useMNC=TRUE
47    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
48      the ability (off by default) to read the grid information using MNC
49    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
50    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
51    o do snap-shot diagnostics at the middle of the time-interval (instead of
52      at the end).
53    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
54      new test for AIM with thSIce + slab-ocean
55    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
56    o move state variable diagnostics to the beginning of the time step ;
57      (note: still needs some work specially for snap-shot diagnostics)
58      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
59    
60    checkpoint57c_post
61    o Change testing option (-ieee) to get closer agreement between g77 & ifort
62    o generate new output.txt files on faulks with g77 & the new -ieee option
63    checkpoint57c_pre
64    
65    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
66      update output.txt of exp. global_ocean.90x40x15
67    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
68      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
69    o add saltFlux(+File) forcing capability with periodicExternalForcing
70    o allow to use pkg diagnostics for GM-Redi & ThSIce output
71    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
72    o improvements for the MNC output from DIAGNOSTICS:
73      - correct handling of the unlimitied dimension
74      - all dims now have associated coordinate variables
75      - variables located at U, V, and Corner ("Z") points are now written
76        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
77        *all* data points are output
78    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
79    o added pkg/seaice/seaice_monitor.F
80    o mdsio_readfield.F can now read files visible only to master MPI process.
81    o pkg/seaice: some test code for ice-modified ocean stress
82    o exf_getffields interpolation defaults to bilinear for all scalar forcing
83      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
84      spurious negative numbers for precipitation and humidity.  Will cause
85      some small numerical differences for integrations using pkg/exf/exf_interp.F.
86    o pkg/ctrl/
87      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
88        May be enabled via doPackDiag
89      *  introduce z-scaling of
90         + gradient (doZscalePack) and
91         + control (doZscaleUnpack)
92    o pkg/mdsio/
93      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
94      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
95    
96    checkpoint57b_post
97    o simplify options in diagnostics_fill arguments (remove weird combinations)
98    o fix MNC coordinate variables so that they now contain per-face index
99      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
100      general, EXCH2 grids are only aligned to a "local" coordinate system
101    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
102    o Implement instantaneous output within pkg diagnostics:
103      setting a negative frequency in data.diagnostics produces
104     "snap-shot" output (as opposed to time-average if freq > 0)
105    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
106      NOTE: change ptracer diagnostics name: use 2 characters to work with
107            more than 9 tracers. Add also diagnostics of advect & diffus flux.
108    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
109      becomes the coordinate variable for the 'T' dimension
110    o add CF-style coordinate variables to MNC
111      - just a first cut:  numbers are meaningless on the cubesphere and
112        missing along the T axis but otherwise it works!
113    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
114    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
115    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
116      this is based directly on what the model compute, so that the content of
117      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
118    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
119    o clean up build options files for SunOS, in particular
120      - remove -traditional from xmakedepend
121      - change -xarch=v9 to -xarch=native for f77
122      - restore use of make (not gmake)
123      - add CC=gcc if using g77
124    o changes per discussion of AM, JMC, & EH3 today:
125      - move redundant "grid" variables out of "state" -- in preparation of
126        creating proper CF-style coordinate variables and in recognition
127        that any/all grid variables can be easily copied (eg. w/NCO) from
128        the grid files into any of the other NetCDF files
129      - *always* output grid variables with MDSIO (this will eventually be
130        changed)
131      - output MNC grid file if useMNC is true
132    o every instance of _END_MASTER() has been found and replaced with
133      _END_MASTER( myThid ) in order to satisfy certain picky Sun
134      preprocessors
135    o re-arrange diagnostics pkg initialisation:
136     - allow each package to extend the available diagnostics list
137     - add some checking and fix small problems (multi-threaded, ...)
138     - new S/R diagnostics_fill (replace fill_diagnostics):
139       look through the short list of active diag. (instead of the long list)
140       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
141    
142    checkpoint57a_post
143    o this set of changes restores TAMC compatibility
144      tested for global_ocean.90x40x15 adjoint on trough
145      (what a pain)
146    
147    checkpoint57a_pre
148    o some modifs in tools/build_options for sunos
149    o call ctrl_pack for ctrl at end for optimcycle=0
150    
151    checkpoint57
152    o add horizontal bi-harmonic viscosity for vertical velocity
153      - new parameter viscA4W (defaults to viscA4)
154      - affects only non-hydrostatic code
155      - to be done: no-slip lateral boundary conditions
156    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
157    o implement Implicit Vertical advection for pTracers
158    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
159      (implemented also for implicit vertical diffusion & advection)
160    o OBCS: extend application of tracer open boundary conditions
161      to a strip beyond the boundary of width Olx/Oly
162    o add call monitor to TAF set of required calls (flow directives)
163      and include in natl_box_adjoint
164    o untangle a few ifdefs related to cost, ctrl, autodiff
165      untangel a few ALLOW_ECCO_OPTIMIZATION
166    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
167      (theta2, salt2 in ecco_cost_weights)
168    
169    checkpoint56c_post
170    o OBCS as control variables
171      - update ctrl_ad_diff.list, obcs_ad_diff.list
172      - remove balance of obcs controls from default
173      - fix index bug nobcs in ctrl_init
174      - fix dummy fields filen in ctrl_pack
175      - add dummy weights for obcs
176    o lsopt: comment out fort.94 output
177    o optim:
178      - remove unnecessary header files
179      - adjusted namelists
180      - add xerbla.F to Makefile
181    o exf:
182      - multiple modifications of exf_check_range
183      - unit change in exf_init_runoff from [m/year] to [m/s]
184    o mdsio:
185      - i/o-vector change debugLevel from debLevA to debLevB
186    
187    checkpoint56b_post
188    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
189      is called from DO_THE_MODEL_IO
190      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
191      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
192      - clean up PTRACERS_WRITE_TIMEAVE a little
193    o add another verification experiment that tests both the cfc-pkg and
194      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
195      reactive tendencies treated inline with regular timestepping
196    o testreport previously did a lousy job of comparing small numbers, so
197      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
198      implemented in the little c-progam tmp_cmpnum.c which is embedded in
199      testreport.
200    o ptracers_monitor: bug fix for MPI
201    
202    checkpoint56a_post
203    o GCHEM: finish reorganizating the package
204      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
205        (introduces another 3D-array for each passive tracer, but only if
206        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
207        gchemTendency is not needed because the timestep is done separately)
208      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
209      - GCHEM is now---more or less cleanly---separate from PTRACERS
210      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
211        so clear to me how that should be done in a general way.
212    o CFC: improve formatting of output in CFC_ATMOS
213    o PTRACERS:
214      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
215        that ALL experiments with ptracers enable can be checked. This makes
216        GCHEM_MONITOR obsolete.
217      - include a runtime parameter PTRACERS_monitorFreq that defaults to
218        monitorFreq
219      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
220    o add PTRACERS (PTR0[1-5]) to testreport output
221    o exf_check_range:
222      * default changed to .TRUE.
223      * will check values for niter0 if debLevA, every timestep if debLevB
224      * STOP in exf_check_range if 'out of range'
225      * range chosen generous to allow for potential extema
226      TBD: a version with stricter range
227           permitted range would be runtime parameters
228    o GMredi:
229      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
230      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
231      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
232    o GCHEM:
233      - move call to GCHEM_FORCING_SEP, so that it is now called before
234        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
235      - introduced a useGCHEM runtime flag and applied it everywhere.
236      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
237        this flag is now only visible within GCHEM-pkg routines.
238      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
239        be replaced by a 3D array that is computed before thermodynamics; for
240        this, the tracer ID iTracer had to be included into the parameter list
241        of ptracers_forcing
242      - set up forward_step to call gchem_forcing, that will replace
243        gchem_forcing_int in ptracers_forcing
244      - cleaning up
245    o small cleaning of exch2: remove files that are also in eesupp/src
246    
247    checkpoint56
248    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
249    o mnc: cleanup "full" files--fixes out-of-memory problem
250    o ECCO-GODAE
251      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
252      * fully merged and updated from SIO code
253        windstress sign change affects
254        - exf_inscal_[u/v]stress
255        - sign of xx_tau[u/v] adjustments
256        - signs in cost_scat
257      * ctrl_get_gen: avoid update of tau[u/v] for first few days
258      * natl_box_adjoint updated and compressed
259      * 2-level checkpoint switch added
260        (tested in EXP. 1 of natl_box_adjoint)
261      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
262    o SVD
263      * first complete, non-hacked version for SVD calculations
264      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
265        performed via direct access files admtlm_vector.it????
266        (via ctrl_[un]pack)
267      * optimcycle is used for ARPACK iteration counter
268        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
269      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
270        and add linear transforms where necessary
271      * controls are initial/final SST, SSS (can be extended; need to check
272        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
273    o mdsio: filename info to both stderr, stdout
274    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
275      from sign change
276    
277    checkpoint55j_post
278    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
279      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
280    o add consistent build directories and .cvsignore files to verification
281    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
282    o make all subroutines 30 or less characters in length for certain older
283      compilers to work (a thorough search only turns up two routines in
284      pkg/ptracers)
285    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
286      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
287    
288    checkpoint55i_post
289    o change arrays for total vertical diffusivity (2.D if explicit,
290      3.D if implicit) ; each ptracer uses its own background value.
291    o added mnc/NetCDF output capability to ocn_compon_interf
292      - added bits to verification/cpl_aim+ocn so that it can run on
293        ITRDA and other clusters without the mpirun "-wd" option
294    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
295      configuration
296    o give MNC the ability to create additional files rather than
297      exceeding a specified file size limit "MNC_MAX_FILESIZE"
298      - the default is just less than 2GB which is a practical limit
299        on many systems
300    o Compute the non-local term using either KPP vertical diffusivity (=default)
301       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
302    
303    checkpoint55h_post
304    o add verification test "vermix"
305    o remove all the *_ioinc flags and replace with the single global
306      outputTypesInclusive flag
307    o allow to set a vertical profile of vertical diffusivity for T & S
308    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
309    o useMNC moved from data.mnc to data.pkg
310    
311    checkpoint55g_post
312    o Renaming carbon AD experiments to comply with testreport conventions
313    o Updating adjoint of Held-Suarez hs94.1x64x5
314    o Fixing directives for non-ECCO forward_step, after ECCO directives
315      have been fixed to avoid recomp. of do_oceanic_phys
316      Works well for global_ocean.90x40x15,
317      but recomp. issue remains for carbon
318    o Updating adjoint output for natl_box_adjoint after
319      pkg/ecco has been modified (see taga c55d_post)
320    
321    checkpoint55f_post
322    o rename to timeave_init_fixed
323    
324    checkpoint55e_post
325    o some delicate re-shuffle of store directives to avoid one
326      extra call of do_oceanic_physics
327      affects ecco_the_main_loop.F, do_oceanic_physics.F
328      checkpoint_lev1_directives.h
329    o NB: this may break global_ocean adjoint temporarily,
330      but it is clear how to fix it. Will do later, need this now.
331    
332    checkpoint55d_post
333    o ECCO specific cost function terms (up-to-date with 1x1 runs)
334    o ecco_cost_weights is modified to 1x1 runs
335    o modifs to allow observations to be read in as
336      single file or yearly files
337    o enable to read exf forcing fields as either
338      single file or yearly files (flag useExfYearlyFields)
339    checkpoint55d_pre
340    
341    o switch between 2-level and 3-level checkpointing
342    o add ability of MNC to write local and "partial" (eg. 2D slices where
343      the full 3D field is never actually stored) arrays to NetCDF files
344      with the correct (that is, the complete multi-dimensional) set of
345      array indicies
346      - used in mom_vecinv() to write the diagFreq output
347      - tested (demonstrated) in verification/aim.5l_cs
348    o further mnc-ification
349      - add verification/lab_sea to the list with mnc setups
350      - fix undefined mnc v-names in cd_code
351      - add kpp to mnc output (both snapshot and timeave)
352    o non-hydrostatic code
353      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
354        in calc_gw.F
355      - defaults to viscAh
356      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
357        friction or Leith) in non-hydrostatic mode, as long as there is
358        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
359    o pkg/cost
360      extend simple cost functions to treat time mean quantities
361      (T,U,V) via cost_accumulate_state from cost_tile
362    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
363        be 2 times larger than the minimum size the advection scheme requires.
364        now get a perfect conservation of salt in advect_cs test-exp (updated)
365    o GGL90 (Gaspar's TKE mixed layer)
366      - add horizontal diffusion of TKE, requires exchanges in
367        do_fields_blocking_exchanges, horizontal diffusivity is zero by
368        default. In OPA there is no horizontal diffusion of TKE but the
369        mixing coefficients are computed from a horizontal average of TKE of
370        6 points or so. I think that diffusion has a little more physical
371        justification.
372      - clean up ggl90_calc in the hope of reducing memory usage (this hope
373        was in vain)
374      - mask tke-variable in ggl90_init
375    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
376    o fix biharmonic diffusion on CS-grid.
377    o more obcs stuff
378      - added obcs_external_fields_load as an alternative to the EXF-pkg option
379        for reading boundary values. This routine is called from
380        obcs_prescribe_read
381      - updated obcs_check
382      - changed sponge layer relaxation parameter units for days to seconds
383      - turned off sponge layer by default
384      - changed argument list of OBCS_CALC to myTime+deltaTclock
385      - fixed about 35 bugs in obcs_external_fields_load
386    
387    checkpoint55c_post
388    o obcs stuff
389      - new runtime flags useOBCSprescribe, useOBCSbalance
390      - re-arranged obcs_calc
391      - moved exf_getobcs to obcs_prescibe_read
392        obcs_prescibe_read is called after ORLANSKI stuff
393        and independent of it (executable can contain all).
394      - updated obcs_check
395      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
396        These may be necessary only if tangential velocities are
397        prescribed at OB, not sure, needs testing.
398    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
399      which simplifies the calls and passes the ifc check-bounds test
400    
401    checkpoint55b_post
402    o add a 2D scalar, Z location, exchange_2 routine.
403    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
404      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
405      affects advect_cs results (for the wrong reason): update output.txt
406    o use a more standard discretization for biharmonic viscosity ;
407     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
408      affects results of dome set-up: update output.txt
409    o fix gad_advection.F (CubedSphere part), back to version 1.23
410    o fix bug in mom_vi_del2uv.F (CubedSphere part).
411    
412    checkpoint55a_post
413    o merged code to
414      * prescribe/read time-dependent open boundaries
415        (works in conjunction with exf, cal)
416      * sponge layer code for open boundaries
417      * each boundary N/S/E/W now has its own CPP option
418        (healthy for the adjoint)
419    
420    checkpoint55
421    o up-to-date adjoint of previous breaks
422      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
423      - global_ocean_ebm: adjoint still needs fix (TLM ok)
424      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
425      - carbon: * remove tr1-related adjoint verification
426                * add ptracer as control variable
427    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
428      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
429    
430    checkpoint54f_post
431    o in verification/carbin/ remove experiment related to
432      ALLOW_PASSIVE_TRACER (array tr1 etc)
433      code_ad/ input_ad/ results_ad
434    
435    o add two new packages
436      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
437        + subject to optimization (memory)
438      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
439        + subject to reordering (many GOTOs in the original code)
440        + so far opps is called for every (i,j) point, and then operates in
441          the vertical; one may want to reorder the scheme in order operate in
442          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
443          fields)
444    o overhaul of IO so that we now have flags for MDSIO and/or MNC
445      - all verification tests compile and run with linux_ia32_g77
446      - defaults are compatible with current input files--nothing
447        should change if you were not previously using MNC
448      - MNC output has been added in numerous places (eg. timeave)
449        but there are still a few writes not yet do-able with MNC
450        (this is in progress)
451      - flags now allow for either/or/both use of MDSIO and MNC and
452        documentation will soon follow
453      - numerous small formatting cleanups for ProTeX
454    o add version info (via BUILD_INFO.h) to MNC and stdout
455    
456    checkpoint54e_post
457    o add two new packages
458      - pp81 (Packanowski and Philander, 1981), Richardson number and
459        stratification dependent mixing
460      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
461      - these scheme operate in a similar manner as KPP (without ghat, of
462        course), however there is only one diffusivity that is used for both
463        temperature and salinity (and passive tracers)ç
464    o add offline package
465    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
466      provided by Stephanie Dutkiewicz
467    o genmake2: add ability to search for C compilers and cleanup test output
468      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
469    
470    checkpoint54d_post
471    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
472    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
473      leading to additional shift by 5 days each year of integration
474       (i.e. leading to considerable offset over the years)
475    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
476    o start with no AB and no initial filtering (staggerTimeStep):
477      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
478    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
479      (external loading & cpl import/export stay in forward_step.F)
480    o update coupling interface to work with new staggerTimeStep
481    o change MDSIO ptracers_pickup.
482    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
483    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
484    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
485    
486    checkpoint54c_post
487    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
488      this affects (truncation error) output.txt of test-exp:
489       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
490    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
491    o change Qnet to always be the net heat flux, (+upward).
492      affects (truncation error) output of natl_box exp.: updated
493    o define the max number of passive tracers in PTRACERS_SIZE.h
494    o start to test mnc routinely in exp0
495    o add sea-ice loading (sIceLoad) as a new forcing field.
496    
497    checkpoint54b_post
498    o add testreport "-j JOBS" option for parallel builds (tested and pretty
499       impressive on Altix and Opteron systems)
500    o diagnostics can now write NetCDF files through the mnc package
501    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
502    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
503    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
504      affects (truncation error) output of lab_sea & natl_box exp.: updated
505    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
506    
507    checkpoint54a_post
508    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
509    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
510    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
511    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
512      + internal_wave (shift in writing cg2d_ini_res)
513    checkpoint54a_pre
514    
515    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
516      - modified verification/lab_sea and natl_box_adjoint accordingly
517    
518    checkpoint54
519    checkpoint53g_post
520    o prepare splitting of thermodynamics: store convect.counter in common block
521    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
522      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
523    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
524    o new parameter "nShapS": allow to treat differently S from T (nShapT)
525    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
526    o restore adjointability
527    
528    checkpoint53f_post
529    o modifications that affect AIM experiment results (update output.txt):
530      - no advection of S at top interface Nr (pkg/generic_advdiff)
531      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
532    o AIM pkg:
533      - include stability function into surf.Flux derivative relative to Tsurf
534      - calculate clear-sky radiation & surface temp. change (for diagnostics)
535    
536    checkpoint53e_post
537    o merged cylindrical coord configuration
538    o added rotating_tank experiment
539    checkpoint53e_pre
540    
541    checkpoint53d_post
542    o faulks upgraded: re-generate output.txt that have changed:
543       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
544    o Added Bryan and Lewis, 1979, vertical diffusivity profile
545    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
546    o added Sadourny discretization of Coriolis
547      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
548      - re-enabled use of omega3 (useAbsVorticity)
549    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
550      vector-invariant equations
551      - note: does *NOT* yet use same variable visc. for no-slip BC's.
552    o recoded the lateral boundary conditions for non-hydrostatic w, this time
553      hopefully without new bugs
554      - still to do: biharmonic friction for non-hydrostatic w
555    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
556    o regenerated output for global_ocean_ebm (using -ieee)
557    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
558      of mom_common/
559      - simple re-arrangement of instructions within computing loop
560    checkpoint53d_pre
561    
562    checkpoint53c_post
563    o new version of coupler for AIM+thSIce and Ocean models
564     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
565     - land: change Evaporation of snow
566     - aim with thSIce: fix bug in snow-precip.
567    o changes to calc_gw.F
568     - bug fix for w^2 term near the bottom boundary
569     - (hopefully) improve the lateral slip boundary condtions for use with
570        partial/looped cells
571      - because the bug fix changes two verification experiments anyway (exp5
572        and plume on slope), change the lateral boundary condition from half slip
573        to the value of no_slip_sides
574    o ebm package wasnt quite up to the parallel task. Fixed that.
575    o Adjoint of EBM package + verification
576      * TLM OK
577      * ADM not sufficient accuracy yet (needs further testing)
578    
579    checkpoint53b_post
580    o Commiting new energy balance model to repository
581      * package is pkg/ebm
582      * verif. is verification/global_ocean_ebm
583      * references are in ebm_driver.F
584    C      * X. Wang, P. Stone and J. Marotzke, 1999:
585    C        Global thermohaline circulation. Part I:
586    C        Sensitivity to atmospheric moisture transport.
587    C        J. Climate 12(1), 71-82
588    C      * X. Wang, P. Stone and J. Marotzke, 1999:
589    C        Global thermohaline circulation. Part II:
590    C        Sensitivity with interactive transport.
591    C        J. Climate 12(1), 83-91
592    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
593    C        Destabilization of the thermohaline circulation
594    C        by atmospheric eddy transports.
595    C        J. Climate 7(12), 1870-1882
596    o Will need long integration testing.
597    checkpoint53b_pre
598    
599    o created pkg/mom_common in preparation for variable viscosity code
600    o renamed and split ini_mnc_io
601    o pkg/land: only liquid water can diffuse or run-off
602    o AIM using land: soil wetness availability account for snow
603    o added printMapIncludesZeros to EEPARMS namelist
604    
605    checkpoint53a_post
606    o restore TAMC compatiility for exf_constants.h
607      (no usage of _d in .h)
608    o Additional storing in KPP in an attempt to fix
609      TAMC problem with adjoint of KPP code.
610      (no success...)
611      Identical code works fine with TAF.
612    o Fixed verification/natl_box_adjoint experiments.
613      Initial conditions for Experiments 4 and 5 are now
614      set to "SEAICE_initialHEFF=0", which is more reasonable,
615      and hence gives results closer to that of Experiment 2.
616      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
617    
618    checkpoint53
619    o stable checkpoint with up to date adjoint
620      TLM tests only run for 1st grdchk at the moment. Its unclear if
621      this is a code problem or a problem with resetting code for g_
622      variables that is being autogenerated wrong.
623      Otherwise:
624       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
625       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
626         are both still in chaos following their security messes.
627    
628    checkpoint52n_post
629    o various build (mostly genmake2) changes including:
630      - ability to build/run more easily within Cygwin and MacOS X
631      - more complicated Makefiles with a stronger dependence on Gnu Make
632    o pkg/seaice modifications
633      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
634        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
635        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
636      - changed proxy for geostrophic velocity and updated
637        verification/lab_sea/results/* accordingly
638      - removed ADI dynamic solver from pkg/seaice
639      - replaced all occurrences of 1/CSTICE or 1/CSUICE
640        they caused a segmentation fault under certain circumstances
641      - removed unused field WATR
642    o bug fix in exf-package:
643      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
644         now reflect that.
645    o small fixes in the cal-package:
646      - set reference date to first of January for the 'model'-calendar
647      - failing of cal_CheckDate in cal_FullDate now actually results in a
648        warning
649    o small modifications in exf-package to increase flexibility:
650      - change climtempfreeze from a constant to a runtime parameter that
651        is specified in data.exf_clim (default = -1.9)
652      - introduce runtime parameter windstressmax (default = 2.0) that is
653        specified in data.exf
654    o fix in pkg/thsice:
655      - update Evap (Tsf changes) to be consistent with Latent heat flux
656      - maintain snow precipitation unchanged (even if Tsf >=0).
657     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
658    
659    checkpoint52m_post
660    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
661      this does not change any of the results, because myIter=0 in swfrac always
662      lead to jwtype=2 (the default anyway), but the call makes little sense
663      as a default
664    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
665    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
666      atmospheric model (AIM) to use it ; add a "slab ocean" component.
667    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
668    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
669    o extending useSingleCpuIO option to work with new exch2 I/O format
670      - old-style, missing-tile I/O is still accessible by defining CPP
671        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
672    o monitor package can write to NetCDF files and/or STDOUT
673    o fix re-definition bug in MNC_GRID_INIT_ALL()
674    o doc/api_reference added
675      - a framework for building an API Reference Manual using all
676        the "protex" comments embedded in the code
677      - see pkg/generic_advdiff, pkg/mnc for examples
678    o MNC:
679      - make myThid the last argument for all subroutines
680      - new default for the grid files: NO halos
681      - add useMNC and other run-time flags
682      - separate per-file-group handling of the unlimited dimension
683      - early initialization of MNC w/ flags read at the eeboot stage
684        and lookup tables set in initialize_fixed
685      - write all MNC output to a freshly-created directory
686    o thermodynamics sea-ice (thsice) is now tested with testreport.
687    o test exp. advect_cs: use the standard cs32 grid ; update output.
688    o Added functionality to grdchk:
689      pick global i,j,k position (or nearest wet) where to perform check.
690    
691    checkpoint52l_post
692    o new land formulation:
693      a) use ground enthalpy as prognostic variable to ensure exact
694         energy conservation.
695      b) account for water temperature and for latent heat of freezing
696         in all processes (rain, run-off, ground storage)
697      c) compute surface and ground temperature implicitly.
698    o aim_v23 modification for new land model:
699      a) Treat separately land / ocean / sea-ice surface fluxes
700         to allow implicit computation of land & sea-ice surface temp.
701      b) add snow precipitation.
702    checkpoint52l_pre
703    
704    o fix problem (when 1 tile is empty) in min/max monitor.
705    o fix bug in timeAve (u,vZetatave in common block)
706    o no restoring terms under ice for pkg/seaice
707    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
708    o bug fix for pkg/seaice pickups
709    o change MNC call locations and add coordinate attributes
710    o mask vorticity at the corner ; affects global_ocean.cs output
711    o fix ini_curvilinear_grid ; test CS experiments with mpi
712    o aim.5l_cs: modify sea-ice fraction input file ; update output
713    o exf: Adding simple range check routine for exf fields after read
714    
715    checkpoint52k_post
716    o removed top-level directory "diags"
717      - we migrated these functions to pkg/timeave a long time ago
718    o fixed bug introduced in pkg/monitor
719    o accuracy ctrlprec = 32 insuffient for gradient checks using
720      averaged fields (I/O via cost_averages)
721      -> use ctrl.h in active_file*.F to control I/O precision.
722    o paramter list of CALL ADTHE_MAIN_LOOP
723    o added initial do_the_model_io to ecco
724    o set all ...Freq to zero after cost_final
725      taveFreq, dumpFreq, pChkptFreq
726    o MAIN and ECCO differentiability restored
727    
728    checkpoint52j_post
729    o fix nchklev in tamc.h for global_ocean...
730    o Bringing flow and store directives up-to-date
731    o Really weird thing!
732      call do_the_model_io from the_main_loop with parameters
733      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
734      TAF places a faulty re-call of initialise_varia
735      after cost_final call which should not be there!
736    checkpoint52j_pre
737    
738    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
739      error messages
740    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
741    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
742      debug output
743    o modfied mdsio_writefield.F to handle non-global files under exch2
744    o update AIM Cubed-Sphere exp (aim.5l_cs):
745      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
746    o update AIM Equatorial Channel exp:
747      use standard aim_v23 pkg and change the SST fields to be more realistic.
748    o globalFile now works with exch2
749    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
750      mon_vort3.F to make exch2 friendly with >1 tile per cube face
751    o limit timeave output for hi-res integrations
752    
753    checkpoint52i_post
754    o removed CPP_EEOPTIONS.h from verification/*/code
755    o updated the tiling for global_ocean_pressure
756    checkpoint52i_pre
757    
758    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
759      the old pkg/aim).
760    
761    checkpoint52h_pre
762    o shortened offending lines in exch2_send_rx?.template
763    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
764    o genmake2: add build & execute test for NetCDF code
765    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
766      old grid files, moved CPP_EEMACROS.h to pkg/exch2
767    o added useSingleCPUIO flag to monitor.F and mon_out.F
768    o added temporary hack for sea-ice dynamics on the cube:
769      metric terms are ignored and it is assumed that
770      there is no sea-ice on cube faces 1, 2, 4, and 5.
771    
772    checkpoint52f_post
773    o added exch2 cube routines to pkg/exch2
774    o modified hs94.cs-32x32x5 to use it
775    o added new grid files to hs94.cs-32x32x5
776    checkpoint52f_pre
777    
778    checkpoint52e_post
779    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
780      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
781    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
782      to work with implicit vertical advection and AB ;
783    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
784    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
785     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
786    checkpoint52e_pre
787    
788    o fix bug in impldiff when Nr=1 or Nr=2.
789    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
790    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
791    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
792      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
793    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
794    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
795    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
796    
797    checkpoint52d_post
798    o re-tiled many expts to allow comparison in multi-processor mode
799      - updated output accordingly
800      - changed hs94.128x64x5 to use intial T from file rather than use the
801        random number generator
802    o add infrastructure in model routines for fizhi and gridalt packages
803    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
804    o changes to permit hi-res, cubed-sphere, configuration
805      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
806      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
807      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
808        of surface winds for the cube
809      (A verification experiment, based on global_ocean.cs32x15, but with
810       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
811       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
812       complete with example surface forcing files and matlab scripts to look
813       at the output and compare it with that of global_ocean.cs32x15.)
814    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
815       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
816       to conform to the common rule.
817    o check-in the first version of the coupler + interfaces for multi-components
818       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
819       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
820       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
821       - ocean and atmos. share the same horizontal grid (no interpolation).
822       - exchanges between component and coupler is done in forward_step
823    o new verification experiment, cpl_aim+ocn:
824       coupled ocean - AIM atmosphere on cs32 grid.
825    
826    checkpoint52d_pre
827    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
828    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
829    
830    checkpoint52c_post
831    o Fixing OPTIONS files for use of exf:
832      - ALLOW_ECCO not needed
833      - ECCO_CPPOPTIONS.h should not be included from
834        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
835        as has been the case in the past
836      - All cal/exf related options are currently set in
837        single header file. Should remain so until we
838        agree on a consistent new policy.
839    o Removed all CPP options for cal package.
840      cal has no more CPP options.
841    o modified STOREs in GAD_ADVECTION
842    o corrected key comp. for passkey
843    
844    checkpoint52b_post
845    o new version: "thsice" of thermodynamic sea-ice pkg:
846     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
847     - modify fluxes but do not change theta directly;
848     - light cleaning of bulk_force pkg (still needed with thsice).
849     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
850       + output_thsice.txt to test thsice & bulk_force pkgs.
851    o put back grid & coriolis monitor output.
852    checkpoint52b_pre
853    
854    o call "do_the_model_io" at the beginning (=> dump initial state)
855    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
856    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
857      (need info on NUMBER_OF_PTRACERS)
858    o missing PTRACERS headers in some routines
859    o default tamc.h in pkg/autodiff supposed to crash
860      to ensure proper customization
861    
862    checkpoint52a_post
863    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
864      - moved surfaceTendencyTice from pkg/seaice to main code
865      - subroutine FREEZE_SURFACE now limits only surface temperature
866        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
867        => new output.txt for global_ocean.cs32x15 & global_with_exf
868      - keep the old version of FREEZE for backward compatibility;
869        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
870      - corresponding modifs for TAF directives
871    o added surface flux output variables to TIMEAVE_STATVARS
872    o time-averaged output for pkg/ptracers
873    o fix problem with ECCO-related divided adjoint
874      snapshot file was missing some ad-variables,
875      but no warning issued by TAF
876    
877    checkpoint52a_pre
878    o some bug fixes for #undef REAL4_IS_SLOW
879    
880    checkpoint52 = ecco_c52_e35
881    o after testing adjoints of checkpoint51u_post
882    
883    checkpoint51u_post
884    o this is the post-merge tag of the ecco-branch
885      (needs another clean checkout and re-testing)
886    o various natl_box_adjoint configs and results
887      but no input fields
888    o obcs adjoint not yet merged!
889    o adding ECCO global 1x1 and 2x2 degree configs
890    o updated/extended some store directives for seaice
891    o pkg/ecco now containes ecco-specific part of cost function
892    o top level routines the_main_loop, forward_step
893      supersede those in model/src/
894      previous input data.cost now in data.ecco
895      (new namelist ecco_cost_nml)
896    o in ctrl/ cleaned some cross-dependencies and updated CPP options
897    
898    checkpoint51t_post
899    o this is the pre-merge tag of the ecco-branch
900    
901    checkpoint51s_post
902    o cleanup: removed various obsolete #define-s
903    o pkg/grdchk
904      - renamed 'ph-grd 3' to 'grad-res'
905      - merged from ecco-branch
906        (remaining bug fixes for obcs gradient checks)
907      - additional high-precision output for testreport
908        (grep for 'precision_grdchk_result')
909    
910    checkpoint51r_post
911    o cleaned up or removed CPP_OPTIONS.h files
912    o updated results for some of the tests to reflect the new
913      optfiles (-ieee: -O0 instead of -O3)
914    
915    checkpoint51q_post
916    o cd_code:
917      - moved cd_scheme.F -> cd_code_scheme.F
918      - separate read_checkpoint from cd_code_ini_vars.F
919      - separated cd_code part from write_checkpoint
920      - updated AD_SOURCE, generated .flow
921      - added CD_CODE_VARS.h to the_main_loop
922      - Moving cd_code specific store dir.s to pkg/cd_code
923    o ctrl package totally restructured
924      - pack/unpack now optional and decoupled from
925        xx_/adxx_ I/O
926      - ctrl_pack/unpack cleaned
927        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
928      - confined inclusion of AD_CONFIG.h to where necessary.
929    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
930    
931    checkpoint51p_post
932    o create initial cd_code package
933      - WARNING: the initialization of fields within packages
934        is broken because INI_FIELDS (where READ_CHECKPOINT is
935        called) is called *before* PACKAGES_INIT_VARIABLES.
936        This seems to be backwards since
937        1) its important to initially zero the entire field including
938           the "halo" region
939        2) zeroing needs to be done *before* reading pickup info
940           and the pickup call might or might not happen in any
941           particular run
942      - this needs an overhaul for R2
943    o cleanup verification/*/code/GMREDI_OPTIONS.h
944    o cleanup testreport
945    
946    checkpoint51o_post
947    o bringing AD-related verif's up to date with genmake2
948      - carbon/
949      - global_ocean.90x40x15/
950      - hs.94.1x64x5/
951      - (front_relax/ )
952    o (more) consistent directory structure for AD-related verif.'s
953    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
954    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
955    o bug fix in find_alpha.F for MDJWF:
956      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
957        change rho -> rho-rhoConst
958      - replace call find_rho to find_rhonum
959    o initialisation of rFlx extended to full array (required by TAF)
960      and shifted to thermodynamics
961    o removed PTRACERS.h in ptracers routine
962    o added surfacetendencyPtr to S/R parameter list pracers_forcing
963    o Correcting initialisations for fVerU, fVerV.
964    o helping TAF to recognize dependency on kUp for
965      fVerU, fVerV
966    o Replacing delZ by delR in pkg/ctrl/
967    checkpoint51o_pre
968    
969    o undid all of cp51 pending some cleanups and discussion
970    o added the [#include "AD_CONFIG.h"] statement to all files that need
971       it for adjoint/tl #defines
972     o re-worked the build logic in genmake2 to support AD_CONFIG.h
973     o removed tools/genmake since it no longer works
974    
975    checkpoint51n_post
976    o modifications to make FREEZE flux visible to pkg/kpp
977      - moved surfaceTendencyTice from pkg/seaice to main code
978      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
979      - subroutine FREEZE now limits only surface temperature
980        (this means new output.txt for global_ocean.90x40x15,
981         global_ocean.cs32x15, and global_with_exf)
982    o added surface flux output variables to TIMEAVE_STATVARS
983    
984    checkpoint51n_pre
985    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
986    o added [#include "AD_CONFIG.h"] to all files that use the following
987      defines:
988      - ALLOW_ADJOINT_RUN
989      - ALLOW_TANGENTLINEAR_RUN
990      - ALLOW_ECCO_OPTIMIZATION
991    
992    checkpoint51m_post
993    o incorporating changes to get TAMC/TAF working in genmake2
994      - added new TAMC/TAF targets to the Makefile
995      - various cleanups related to package handling
996      - these changes should have no impact on the forward model
997    
998    checkpoint51l_post
999    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1000     - faster algorithm for cal_addtime.F
1001     - higher precision arithmetic, where needed
1002     - pkg/exf *startdate variables changed from calendar date to
1003       model integration time
1004    
1005    checkpoint51l_pre
1006    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1007    o enable to apply restoring on S & T only in a latitude band.
1008    o update output (external_forcing_surf modif. change truncation errors)
1009       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1010    
1011    checkpoint51k_post
1012    o change default to: useNHMTerms=.FALSE.
1013     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1014       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1015     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1016        exp1, ideal_2D_oce
1017     - change data file of oceanic exp (leave the results unchanged for now)
1018       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1019    o set gravitySign automatically according to the vertical coordinate used
1020      (and change sign: back to "logical" value: +1 when R increases downward)
1021    o added an include barrier to the default CPP_OPTIONS.h and
1022      removed the #include "PACKAGES_CONFIG.h" from it
1023    o fix a bug in mom_fluxform (from chk51j_post)
1024    
1025    checkpoint51j_post
1026    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1027    o adjusted some flow directives (dynamics, thermodynamics)
1028    o added cubed-sphere case to test cost function
1029    o heckpoint_lev?_directives.h now include
1030      pkg-specific directives, whenever those are enabled.
1031    o Moving pkg-specific flow directives to corresponding pkg
1032      Moving pkg-specific differentiation list to corresponding pkg
1033      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1034      ---> conventions are
1035           - pkg_ad.flow
1036           - pkg_ad_diff.list
1037           - pkg_ad_check_lev?_dir.h
1038    
1039    checkpoint51i_post
1040    o merge of the branch-genmake2
1041      - knowingly breaks the older genmake
1042      - automatic generation of all ALLOW_${PKG_NAME} defines
1043      - new testreport supersedes older testscript
1044    o large number of package inclusion and header cleanups
1045    checkpoint51i_pre
1046    
1047    o new output for adjoin of global ocean vector invariant
1048    o fix for checkpoint of thermodynamic seaice and bulk_force
1049    o Steph gchem various cleanups
1050    
1051    checkpoint 51h_pre
1052    o fixed some single quotes
1053    o modify gchem pkg to be more versatile
1054    o modifications to clean up dic pkg
1055    o add pkg/cfc
1056    
1057    checkpoint51g_post
1058    o provide links for ARPACK and ADM*TLM
1059    o start removing verification/vero/
1060    o update AD-related stuff
1061      (in particular some IF-statements in model/src/ routines)
1062    o adding to verification/global_ocean.90x40x15/ adjoint of
1063      vector invariant setup
1064    
1065    checkpoint51f_post
1066    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1067    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1068      of tracer Green's fucntions for ocean inversion project.
1069    
1070    checkpoint51f_pre
1071    o Added on-the-fly spatial interpolation capability
1072        "USE_EXF_INTERPOLATION" to pkg/exf.
1073      - This is a temporary Cartesian-grid hack until
1074        the super-duper ESMF coupler becomes available.
1075      - See verification/global_with_exf/README for usage example.
1076      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1077        flags and modified pkg/seaice accordingly.
1078    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1079        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1080        non-local transport term.
1081    
1082    checkpoint51e_post
1083    o pkg/mom_vecinv:
1084      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1085      - add time-ave diagnostic of vorticity advection.
1086    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1087    o atmospheric geopotential: - include water vapor effect;
1088                                - use p^kappa in p* scaling.
1089    o land pkg: read initial state from files.
1090    o AIM : add stratospheric drag in the upper level
1091    
1092    checkpoint51d_post
1093    o change function ILNBLNK (=> last non-blank char.) to return zero
1094      (instead of the string length) when the string. char is empty
1095    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1096    o modif's to restore TAMC compatibility
1097      - avoid "_d" constructs in PARAMETER declarations
1098      - avoid interrupting lines by comment lines
1099    o Use cluster local disks for purely local I/O
1100      vs. globally visible disks needed for ctrl stuff
1101      (merged from ecco-branch)
1102      - new active_file_loc... and mdsio_..._loc routines
1103      - affected packages: autodiff, ctrl, grdchk, mdsio
1104    
1105    checkpoint51c_post
1106    o introducing integer flag debugLevel
1107      - debLevZero: suppress all output
1108      - debLevA: standard
1109      - debLevB: equivalent to current debugMode=.TRUE.
1110    o introducing pathname variable mdsioLocalDir for mdsio
1111      that can be specified at runtime
1112      (relevant for cluster I/O to local disk)
1113    `
1114    >>>checkpoint51b_post
1115    adjoint of ptracers
1116    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1117    o extended state in checkpoint_lev?, etc.
1118    o alternative ctrl/cost with tr1 or ptracer
1119    o new comlev1_bibj_ptracers
1120    o new ptracers.flow
1121    o made ptracers_forcing same as external_forcing_s
1122    o added verification for adjoint with ptracers
1123      - adm. grdchk fail so far
1124      - tlm. grdchk OK
1125      - checked tapelev/comlev recomputations: OK
1126    <<<checkpoint51b_pre
1127    
1128    checkpoint51a_post
1129    o added code for biogeochemistry package
1130      - new pkgs: dic, gchem
1131      - new subroutine in ptracers
1132    o modify code for biogeo packages
1133      - in model/src and pkg/ptracers
1134    
1135    checkpoint51
1136    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1137      - autodiff, ctrl, exf, grdchk, seaice
1138      kept separate packages
1139      - cost, ecco, obcs
1140    o updating verification/internal_wave, verification/lab_sea
1141      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1142    
1143    checkpoint50i_post
1144    o Preparing next differentiable checkpoint and sync
1145      of MAIN vs. ecco-branch
1146      - 1st step: this one is differentiable
1147      - 2nd step: next(! not this) checkpoint will have updated packages
1148                  from ecco-branch)
1149    
1150    checkpoint50h_post
1151    o new package "land": provide surface BC for AIM.
1152    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1153    o AIM: use true log-P extrapolation for near surface temp (= as in
1154        F.Molteni paper) ; update aim.5l_cs output.
1155    o New variable in PARM03 for more flexible pickups
1156    o somewhat cleaned package initialisation sequence for
1157      ctrl/ cost/ ecco/ in packages_... routines
1158    
1159    checkpoint50g_post
1160    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1161      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1162      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1163        made the default because of faster convergence than ADI
1164    
1165    checkpoint50f_post
1166    o exf totally restructured
1167      - replaced all exf_set_ routines by one generic exf_set_gen.F
1168        and made sure it's still differentiable
1169      - split exf_getffields.F into new exf_bulkformulae.F
1170      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1171      - updated adjoint/makefile and relevant verif. accordingly
1172    
1173    checkpoint50f_pre
1174     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1175          + change Evap over land. (update aim.5l_cs output)
1176     o added missing .cvsignores and made uniform across expts
1177     o changed configuration of tidal_basin_2d expt
1178     o added pkg/debug functions for tracing code in fatal crashes
1179     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1180     o new fn in pkg/monitor to stop model if solution grows too big
1181     o removed lots of single quotes from comments
1182    
1183    checkpoint50e_post
1184    o make KPP work with PTRACERS
1185     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1186       nearly a copy of kpp_transport_s
1187     - there is no analogue to SurfaceTendencyS, so I have to use
1188       gPtr(of the surface layer) instead
1189    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1190    checkpoint50e_pre
1191    
1192    checkpoint50d_post
1193    o change kpp output from multiple-record state files to single-record state
1194      files analogous to write_state.F
1195    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1196      analogous to the cg2d-related output.
1197    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1198      so that writing to internal file fn (with length 512) fails.
1199    checkpoint50d_pre
1200    
1201    checkpoint50c_post
1202    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1203    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1204    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1205    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1206    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1207    
1208    checkpoint50c_pre
1209    Merging from release1_p13:
1210    o bug fix for pkg/seaice dynamic solver
1211    o Added SEAICE_initialHEFF to pkg/seaice
1212    
1213    checkpoint50b_post
1214    o store u*,v* in gU,V instead of in guNm1,gvNm1
1215    o in order to put the momForcing out of the Adams-Bashforth:
1216      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1217      to timestep.F
1218    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1219    o re-generate output for highly sensitive test-exp:
1220       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1221    
1222    checkpoint50b_pre
1223    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1224    o corrected CPP option mismatch in exf_Bulk... functions for case
1225      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1226    
1227    checkpoint50a_post
1228    o Bug fix for merging between c50 and KPP.
1229      ikey was passed from thermodynamics to kpp_calc via
1230      common block rather than being recomputed in kpp_calc,
1231      in contradiction with new key itdkey.
1232      New key ikppkey created, and tamc.h headers updated.
1233    
1234    checkpoint50
1235    - 2nd step of merge with ecco-branch:
1236      merge changes in ecco-branch back into main trunk
1237    - bug fix in find_alpha
1238    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1239    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1240    - merged some sliced AD support routines
1241    
1242    checkpoint49
1243    merged from ecco-branch:
1244    o exf:
1245      - Enable initialisation of forcing fields to constant
1246        (runtime) values.
1247      - in exf_getffields.F
1248        Reduce i-/j-loop to interior domain, discarding overlaps.
1249        That also fixes wrong TAF-key computations for key_1, key_2
1250        with bulf formulae.
1251      - exf_init.F modify #ifdef for exf_init_evap
1252      - exf_getffieldrec.F, ctrl_getrec.F
1253        The following INT-usages are not safe:
1254          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1255          fldcount = int(fldsecs/fldperiod) + 1
1256        and were modified.
1257    o autodiff: checkpoint_lev...
1258      - updated storing for bulk formulae (some arrays were missing)
1259      - added state for seaice package
1260      - synchronized with main branch
1261    o DIVA:
1262      Modif.s in
1263      - the_main_loop.F
1264      - the_model_main.F
1265      and added cost_final_restore.F cost_final_store.F
1266      o With these changes, it is possible to fully separate
1267        the first forward run to compute the cost function (mdthe_main_loop)
1268        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1269        into separate model executions.
1270        This enables better tuning of DIVA to given queue sizes.
1271      o Loss of cost function value in consecutive DIVA runs is
1272        fixed by storing to 'costfinal' file.
1273      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1274        beginning/end of adjoint integration is accounted for.
1275      The current changes apply to TAF-1.4.26.
1276      TAF has one remaining bug, requiring one manual change
1277      (see MITgcm manual).
1278    o cal: synchronized between MAIN and ecco-branch
1279    
1280    checkpoint48i_post
1281    o Changes to restore differentiability of code w.r.t. previous tag
1282      (mostly adding new routines to make list and replacing
1283      pressure by totPhiHyd).
1284    o Updated and merged grdchk package
1285      - has both ADM and TLM checks
1286      - works for single- and multi-proc.
1287      - output cleaned
1288      - worked successfully for parallel DIVA
1289    o genmake:
1290      - Adding -platform=SP4
1291      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1292    o Modif. for DIVA:
1293      ctrl_unpack should not be called in intermediate DIVA interval.
1294      (similar thing would apply for active files such as
1295      tbar, sbar, psbar, which should not be reinitialised;
1296      only relevant for ecco-branch)
1297    
1298    checkpoint48h_post
1299    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1300    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1301    o Added SEAICE_initialHEFF to pkg/seaice
1302    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1303    
1304    checkpoint48g_post
1305    --- EOS:
1306    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1307      store total Potential in totPhyHyd for diagnostics & EOS.
1308    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1309    --- Pressure/geopotential gradient:
1310    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1311    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1312      ( changes results of global_ocean_pressure )
1313    o NLFS + z-coord.: add eta*Rho' contribution.
1314    o accurate phiHyd when using interface-W at the middle between 2 centers
1315     ( changes results of ideal_2D_oce )
1316    o includes r* 2nd term in potential gradient.
1317    
1318    checkpoint48f_post
1319    Merging from release1_p12:
1320    o Modifications for using pkg/exf with pkg/seaice
1321      - improved description of the various forcing configurations
1322      - added basic radiation bulk formulae to pkg/exf
1323      - units/sign fix for evap computation in exf_getffields.F
1324      - updated verification/global_with_exf/results/output.txt
1325    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1326      (SBO) core products, including oceanic mass, center-of-mass,
1327      angular, and bottom pressure (see pkg/sbo/README.sbo).
1328    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1329      to avoid negative values in shallow regions.
1330      - updated verification/natl_box/results/output.txt
1331      - updated verification/lab_sea/results/output.txt
1332    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1333    o Added useSingleCpuIO option (see PARAMS.h).
1334    o Updated useSingleCpuIO option in mdsio_writefield.F to
1335      work with multi-field files, e.g., for single-file pickup.
1336    o pkg/seaice:
1337      - bug fix in growth.F: QNET for no shortwave case
1338      - added HeffFile for specifying initial sea-ice thickness
1339      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1340    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1341      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1342    o pkg/seaice:
1343      - adjoint-friendly modifications
1344      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1345    
1346    checkpoint48e_post
1347    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1348    o dynamics: change definition of computational domain & adapt mom_fluxform
1349      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1350    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1351        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1352        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1353        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1354        inverted_barometer solid-body.cs-32x32x1
1355      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1356    
1357    checkpoint48d_post
1358    o in preparation for r*:
1359     a) use pre-computed gradient of hydrostatic potential:
1360        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1361     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1362        => affects results of glob_oce_pressure (different truncation error)  
1363      update output.txt of ideal_2D_oce & global_ocean_pressure
1364    
1365    checkpoint48d_pre
1366    o in preparation for r*:
1367      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1368      pass the 2 comp. of the grad. as arguments to momentum S/R.
1369      but for the moment, only used if it does not change the results.
1370    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1371    
1372    checkpoint48c_post
1373    Modifications in treatment of initial flux forcing controls
1374    to avoid extra storing of flux fields.
1375    
1376    checkpoint48c_pre
1377    o Added tidal_basin_2d experiment (currently 1D!)
1378    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1379    
1380    checkpoint48b_post
1381    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1382     (modification to pressure gradient not yet implemented)
1383    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1384      (for U & V) that are used for vertical advection of momentum.
1385    
1386    checkpoint48a_post
1387    o In preparation for r*, use temp. array to compute vertical transport
1388       in flux-form momentum pkg. => change results of few test-exp.
1389      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1390                        lab_sea, natl_box & plume_on_slope
1391    
1392    checkpoint48
1393    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1394    
1395    checkpoint47j_post
1396    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1397    o moved adexch from forward_step to addummy_in_stepping
1398    o added exch in ctrl_map_...
1399    o aveFreq.=0. at end of cost_final to avoid overwrite in
1400      reverse checkpointing loop
1401    o Yet more changes in gmredi:
1402      * adgmredi_calc_tensor
1403        avoiding all recomputation of gmredi_slope_limit
1404      * adgmredi_x/y/rtransport
1405        added flag for excessive storing to avoid recomp. of
1406        u/v/rtans, dTdx/y/z
1407        -> this is not really necessary and very memory-consuming
1408      * adgmredi_slope_psi:
1409        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1410      * gmredi_slope_limit
1411        re-activated full calculation of taperfct for case 'ac02'
1412    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1413    
1414    checkpoint47i_post
1415    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1416    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1417      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1418    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1419    o gmredi: fix few bugs.
1420    
1421    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1422    This will be a good checkpoint to plug into the ecco-branch.
1423    o few modif.'s to get latest version adjointed
1424      (mainly kick out code in ini_linear_phisurf)
1425    o modif's to run adjoint with exactConserv
1426    o case GM_BOLUS_ADVEC should be cleaned
1427      S/R gmredi_slope_psi should be cleaned
1428    o verification/carbon now has exactConserv=.TRUE.
1429    
1430    checkpoint47g_post
1431    o time-average AIM output: becomes independent from statvars time-average
1432      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1433    o After TAF bug fix:
1434      Tested adjoint of gmredi package.
1435      Tests were done with checkpoint47 rather than with latest
1436      checkpoint47f_post since the latter is broken for the adjoint
1437      verification/carbon/ contains both ADM and TLM gradient checks.
1438    Here they are, before they get changed/lost/stolen.
1439    Mostly modif.'s to fix numerical sensitivities.
1440    Gradient checks OK for
1441    - GM_taper_scheme:
1442      * clipping
1443      * ac02
1444      * linear
1445      * glw91
1446      * dm95
1447      * ldd97
1448    - GMREDI_OPTIONS:
1449      * GM_VISBECK_VARIABLE_K
1450      * GM_NON_UNITY_DIAGONAL
1451      * GM_EXTRA_DIAGONAL
1452      * GM_BOLUS_ADVEC
1453    in conjunction with data.gmredi parameters to be checked in
1454    in a few minutes under verification/carbon/code/
1455    
1456    checkpoint47f_post
1457    Merging from release1_p10:
1458    o modifications for using pkg/exf with pkg/seaice
1459      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1460        and SEAICE_EXTERNAL_FLUXES
1461      - pkg/exf CPP options EXF_READ_EVAP and
1462        EXF_NO_BULK_COMPUTATIONS
1463      - usage examples are Experiments 8 and 9 in
1464        verification/lab_sea/README
1465      - verification/lab_sea default experiment now uses
1466        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1467    
1468    checkpoint47e_post
1469    o created a tag prior to creating a branch
1470    
1471    checkpoint47d_post
1472    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1473      at the bottom boundary had an erroneous half slip boundary condition
1474    o added bottom drag and no slip boundary condition capabilities to
1475      oceanic pressure coordinates code
1476    o added new verification experiment global_ocean_pressure, this experiment is
1477      also described in the tutorial section of the manual
1478    checkpoint47d_pre
1479    
1480    checkpoint47c_post
1481    o Added a verification experiment for a global cubed-sphere ocean run
1482      -  verification/global_ocean.cubed32x32x30
1483      -  uses pkg/therm_seaice and pkg/bulk_forcing
1484    
1485    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1486    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1487      when using P-coordinate; only implemented for atmospheric config.
1488    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1489      NOTES: requires option NONLIN_FRSURF to be "#define".
1490    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1491    
1492    checkpoint47b_post
1493    Merging from release1_p9:
1494    o pkg/seaice
1495      - removed GOTO's and added taf directives
1496      - double precision constants to reduce the g77 (Linux)
1497        to F77 (SGI) differences reported in release1_p8
1498    o tools/genmake
1499      - added SGI options
1500    o verification/testscript
1501      - updated to that of checkpoint47a_post
1502    o verification/global_ocean.90x40x15/input/eedata
1503      - modified for SGI f77 compatibility
1504    o verification/lab_sea
1505      - added description of sea-ice model
1506      - added missing matlab routines
1507      - added test of thermodynamics parallelization
1508    
1509    checkpoint47a_post
1510    o new pkg: aim_v23
1511     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1512       for now, keep the same surface forcing as before.
1513     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1514     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1515     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1516    o add diagnostic of surface correction term in monitor output
1517    
1518    o bulk_force and therm_seaice
1519    - Two packages:  bulk_force (Bulk forcing)
1520      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1521    - Earlier integration from Stephaine Dutkiewicz
1522      and Patrick Heimbach.
1523    - Two ifdef statements for compile time,
1524       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1525    
1526    checkpoint47
1527    differentiable version of checkpoint46n_post
1528    o bug fix in quasihydrostaticterms
1529    o * "clean" adjoint code (in terms of extensive recomputations)
1530        can now be obtained for all GMREDI options (i.e. for
1531        - GM_VISBECK_VARIABLE_K
1532        - GM_NON_UNITY_DIAGONAL
1533        - GM_EXTRA_DIAGONAL
1534        - GM_BOLUS_ADVEC )
1535      * However, wrong gradient check problem remains unsolved.
1536      * New CPP options have been introduced for different
1537        tapering schemes
1538    o external_fields_load now part of differentiation list
1539    o pressure needs multiple storing;
1540      would be nice to have store_pressure at beginning or
1541      end of forward_step, e.g. by having phiHyd global (5-dim.)
1542      (NB: pressure is needed for certain cases in find_rho,
1543      which is also invoked through convective_adjustment).
1544    o recomputations in find_rho for cases
1545     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1546    o #define ATMOSPHERIC_LOADING should be differentiable
1547    o ini_forcing shifted to begining of initialise_varia
1548    o Incorporating QNVS line search routines into MITgcm
1549      (this is separate code, and therefore not under pkg)
1550      lsopt/, optim/
1551    o Updated verification/carbon/
1552      - #define GM_VISBECK_VARIABLE_K
1553      - GM_taper_scheme    = 'ldd97'    
1554    
1555    checkpoint46n_post
1556    Merging from release1_p8:
1557    o verification/natl_box:
1558      updating new external_fields_load routine
1559    o New package: pkg/seaice
1560      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1561      The sea-ice code is based on Hibler (1979-1980).
1562      Two sea-ice dynamic solvers, ADI and LSR, are included.
1563      In addition to computing prognostic sea-ice variables and diagnosing
1564      the forcing/external data fields that drive the ocean model,
1565      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1566      The implied surface heat flux is then stored in variable
1567      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1568      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1569      non-local transport term.  Because this call precedes model
1570      thermodynamics, temperature under sea-ice may not be "exactly" at
1571      the freezing point by the time theta is dumped or time-averaged.
1572      N.B.: fairly large differences in accuracy occur across
1573            different platforms/compilers; comparison between
1574            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1575            generated output gives:
1576       T           S           U           V
1577      C D M    c        m  s        m  s        m  s        m  s
1578      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1579      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1580      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1581    
1582      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1583    o GAD:
1584      - generated new common blocks to account for call of
1585        same gad routines with differing traceridentities
1586        (needed to modify tracerIdentity indices in GAD.h)
1587      - generated separate common blocks for case useCubedSphereExchange
1588        (Department of Futurology)
1589      - parameter lists to gmredi_?transport: added tracerIdentity
1590      - added new key indices to tamc.h
1591    o external_fields_load:
1592      - added this routine to TAF list
1593      - needed to make some common blocks global and additional storing
1594        along the same lines as exf package (checkpoint_lev?_directives.h)
1595    o exf:
1596      updated external forcing package
1597      - bug fixes carried over from ecco-branch
1598        (missing OBCS_OPTIONS.h in two routines)
1599      - enable easy to use "no forcing".
1600      - added exf I/O for atmospheric loading
1601      - added exf I/O for runoff data
1602      - transfered scaling between exf <-> MITgcm to exf namelist
1603    o Adding new verification experiment global_with_exf.
1604      This verification experiment is almost identical to the
1605      global_ocean.90x40x15 experiment, except that it uses
1606      the exf (and cal) package instead of the
1607      external_fields_load routine (cf README file).
1608    
1609    checkpoint46m_post
1610    o modified testscript to return -- when there are no lines of "%MON" output
1611    o added new flag "quasiHydrostatic" for QH mode
1612      and new routine quasihydrostaticterms()
1613    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1614      New routine: mom_u_coriolis_nh()
1615    o fixed sign of non-hydrostatic metric terms in u and v equations.
1616      Depend on correct sign of gravitySign.
1617    o added work.pc* to .cvsignore in aim directories using ifc
1618    o introduced flag for controllin non-hydrostatic metric terms
1619    o removed gravitySign from PARM04
1620    o switched to g77/ifc from pgf77 in aim experiments
1621    
1622    checkpoint46l_post
1623    o made convective adjustment work with pressure coordinates:
1624     - changed the direction of k-loop in convective_adjustment.F for the
1625       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1626     - adjusted the reference pressure k-index in convective_adjustment.F
1627     - adjusted the convection condition in convect.F (in analogy to
1628       calc_ivdc.F)
1629     - convective_adjustment no longer computes anything on the halos
1630     - removed the warnings about negative salinity from find_rho.F and
1631       find_alpha.F; instead the new routine look_for_neg_salinity, called
1632       at the beginning of find_rho, find_alpha, and find_beta, does a
1633       check of the entire slice, if CPP-option
1634       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1635    checkpoint46l_pre
1636    
1637    checkpoint46k_post
1638    o fixed the verification/global_ocean.90x40x15 experiment:
1639     - new bathymetry (the world according to A., JMC, and M.)
1640     - new initial fields and forcing fields (*.bin files)
1641     - new POLY3.COEFFS (for the next release one should switch to a full
1642       equation of state: JMD95P or MDJWF)
1643     - fixed several errors and redundancies in the data file
1644     - experiment uses looped cells
1645     - added matlab directory with diagnostic scripts for plotting of output
1646    
1647    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1648     - read AIM physics parameters from a file (data.aimphys)
1649     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1650    
1651    checkpoint46j_post
1652    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1653    o move wVel computation at the end of the time step, in S/R integr_continuity
1654    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1655    o update timeave pkg for wVel diagnostic.
1656    checkpoint46j_pre
1657    
1658    checkpoint46i_post
1659    o Clean up AIM package (and keep the results unchanged):
1660      include CPP_OPTION and use IMPLICT NONE in all routines ;
1661      declare all the variables _RL ; use _d 0 for all numerical constants.
1662      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1663    
1664    checkpoint46h_post
1665    o cleaned up the use of rhoNil and rhoConst.
1666      - rhoNil should only appear in the LINEAR equation of state, everywhere
1667        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1668        and the dynamical equations are all divided by rhoConst
1669    o introduced new parameter rhoConstFresh, a reference density of fresh
1670      water, to remove the fresh water flux's dependence on rhoNil. The default
1671      value is 999.8 kg/m^3
1672    o cleanup up external_forcing.F and external_forcing_surf.F
1673      - can now be used by both OCEANIC and OCEANICP
1674    checkpoint46h_pre
1675    
1676     Added code to convert surface volume flux (fresh water) into
1677     a mass flux when using P coordinates in the ocean (OCEANICP).
1678     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1679    
1680    checkpoint46g_post
1681    o Include a new diagnostic variable phiHydLow for the ocean model
1682      - in z-coordinates, it is the bottom pressure anomaly
1683      - in p-coordinates, it is the sea surface elevation
1684      - in both cases, these variable have global drift, reflecting the mass
1685        drift in z-coordinates and the volume drift in p-coordinates
1686      - included time averaging for phiHydLow, be aware of the drift!
1687    o depth-dependent computation of Bo_surf for pressure coordinates
1688      in the ocean (buoyancyRelation='OCEANICP')
1689      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1690        Theta, Salinity, and Pressure in the parameter list. This routine is
1691        presently contained in find_rho.F. This routine does not give the
1692        correct density for 'POLY3', which would be a z-dependent reference
1693        density.
1694    o cleaned up find_rho
1695      - removed obsolete 'eqn' from the parameter list.
1696    o added two new verification experiments: gop and goz
1697      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1698    checkpoint46g_pre
1699    
1700    checkpoint46f_post
1701    o Enable tangent linear (forward mode) gradient checks:
1702      - extended active file handling to g_... files
1703      - added TANGENT_SIMULATION to theSimulationMode
1704      - extended grdchk package accordingly
1705    o added tangent linear setup in verification/carbon/code_ftl
1706    o added adjoint setup in verification/front_relax/code_ad
1707    
1708    checkpoint46e_post
1709    o Added new equation of state -> MDJWF
1710      - EOS of McDougall et al., 2002, JAOT, submitted
1711      - caveat: the equation of state is only valid for a smaller (more
1712        realistic?) range of values than JMD95P/Z and UNESCO
1713      - added masks to the calculation of pressure in store_pressure
1714      - added more check values for density in check_eos (ini_eos.F), some of
1715        the old check values are out of the range of the MDJWF-eos, so don't
1716        expect perfect matches for those
1717    checkpoint46e_pre
1718    
1719    checkpoint46d_post
1720    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1721      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1722      case of pressure coordinates. eosType='JMD95Z' in
1723      combination with buoyancyRelation='OCEANICP' now causes an error.
1724    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1725      in find_alpha/beta.
1726    checkpoint46d_pre
1727    
1728    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1729      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1730    
1731    checkpoint46c_post
1732    o Changes necessary for ocean in p-coordinates
1733     -  Added new buoyancy relation = 'OCEANICP'
1734     -  Added new parameters = gravitySign (this used to be contained inside
1735        the factor dRdZ which I added when we first switched to R coordinates).
1736     X GM/Redi is not compatible (yet)
1737     X bottom drag and no-slip need to be debugged.
1738    checkpoint46c_pre
1739    
1740    checkpoint46b_post
1741    o Added new equation of state -> JMD95Z and JMD95P
1742      - EOS of Jackett and McDougall, 1995, JAOT
1743      - moved all EOS parameters into EOS.h
1744      - new routines ini_eos.F, store_pressure.F
1745    o Added UNESCO EOS, but not recommended because it requires
1746      in-situ temperature (see JMD95)
1747    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1748      unesco.f to be used with POLY3
1749    checkpoint46b_pre
1750    
1751    checkpoint46a_post
1752    o Added (atmospheric) pressure loading
1753      - new field in FFIELDS.h, etc...
1754      - new cpp flag ATMOSPHERIC_LOADING
1755    o Changed hFacC to _hFacC in calc_phi_hyd.F
1756    o Added SHORTWAVE_HEATING to some files for consistency
1757    checkpoint46a_pre
1758    
1759    checkpoint46
1760    further merges from release1_p5
1761    o new ctrl package
1762      - adopted from ECCO environment to enable optimization
1763      - added Eliassen Palm fluxes to controls
1764    o added Eliassen Palm flux controls to gradient check package
1765    o cost package
1766      - Compatible with new ctrl package
1767      - added Eliassen Palm cost hooks
1768      - modif's of existing cost functions
1769    o Adjoint-related bug fixes in kpp:
1770      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1771      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1772    o autodiff package
1773      - flow directives:
1774        + new for S/R do_the_model_io
1775        + enhanced for S/R checkpoint
1776        + new gmredi.flow
1777      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1778        disable adcommon.h/g_common.h by default.
1779      - fixed problem for adjoint of global_max
1780    o modified verification/carbon/
1781    o New setup for adjoint of global_ocean
1782    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1783    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1784    o incorporated hooks for sponge layer code (external_forcing.F)
1785    
1786    checkpoint45d_post
1787    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1788    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1789      (affects plume_on_slope "cg2d" output)
1790    o add new parameter deltaTfreesurf for free-surface time stepping
1791    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1792    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1793    o change phiMin in exp1 (to agree with documentation)
1794    o add new flags:
1795     - T,S forcing inside/outside Adams-Bashforth
1796     - turn off temp,salt advection and/or forcing
1797     - for each tracer, define internal flag for multiDimAdvection & A-B
1798    o monitor: change definition of KE to check conservation of Energy
1799    
1800    checkpoint45c_post
1801    o Removed f90 comments ("!")
1802    o Modified initialisations to enable exf package for MITgcm
1803      (without invoking ECCO_PACKAGE).
1804    o modifications to gradient check package (Martin Losch)
1805      - enable centered differences
1806      - modified format of standard output
1807    
1808    checkpoint45b_post
1809    o cleaned exchange calls in cg2d
1810    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1811    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1812      to configure barotropic setup (Martin Losch)
1813    o moved some initialisations within bi,bj loop in dynamics
1814      (TAF flow dependency)
1815    o in initialise_varia, moved call packages_init_variables
1816      before convective_adjustment_init
1817      (corresponding adjustment of TAF tape initialisation).
1818    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1819    
1820    checkpoint45a_post
1821    o compute Rho over the whole domain (extend iMin,jMin indices)
1822    o specific exchange for X-slice domain (case Ny=1)
1823    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1824    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1825    
1826    checkpoint44h_post = checkpoint45
1827    o Fix to restore differentiability:
1828      place at which packages_init_variables is called in
1829      initialise_varia is crucial for reverse control flow.
1830    o modifications in GMRedi to enable stable adjoint
1831      (corresponding modif's in thermodynamics, dynamics)
1832    o added missing hook for sponge layer code in external_forcing
1833    o modified test cost functions
1834    o storing in gad_advection (plus removal of write(0,*)!
1835    o missing headers TR1.h added in convective_adjustment routines
1836    o errorMessageUnit set non-equal zero in eeboot
1837      (conflict on some platforms, e.g. IBM SP3)
1838    o modified carbon verif.
1839    
1840    checkpoint44h_pre
1841    o vertical grid option: allow to put the Interface at the middle between
1842      2 cell-centers ; replace delZ in pkg/kpp by drF.
1843    o GM Advective form: Tracers are advected using the residual transport (=
1844      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1845    
1846    checkpoint44g_post
1847    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1848      results) ; ifdef missing in thermodynamics.F
1849    
1850    checkpoint44f_pre,checkpoint44f_post
1851    o added PTRACERS package
1852      This allows an arbitrary number of passive tracers to be integrated
1853      forward simultaneously with the dynamicaly model.
1854      + Implemented so far:
1855        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1856        - I/O and checkpointing
1857        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1858      + Not implemented so far:
1859        - KPP
1860        - OBCS
1861      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1862        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1863        line in data.pkg.
1864      + This package is disabled by default since it increases storage.
1865    
1866    
1867    o testscript: added -cleanup option
1868    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1869                 b) enable to filter 2D fields.
1870    
1871    checkpoint44e_pre,post
1872    o re-wrote convective adjustment to use pre-calculated weights
1873      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1874      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1875      Original calls to convect() still in place.
1876    
1877    chkpt44d_pre,post
1878    o added missing EXCLUDE_MONITOR flags
1879    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1880      (incompatible typ in MIN/MAX expressions caused problems
1881      on IBM SP3)
1882    o in genmake added variable MAKEDEPEND
1883      plus resetting for case SunOS
1884    o added timer_stats.c routine for IBM SP3
1885    o removed variables in dynamics
1886    !!! I forgot to create tag chkpt44d_pre !!!
1887    !!! But chkpt44d_pre = chkpt44c_post    !!!
1888    
1889    o real fresh water flux implemented with non-linear free-surface.
1890    
1891    chkpt44c_pre,post
1892    o few fix (mask in shap_s2, EmPmR in external_field_load,
1893      USE_NATURAL_BCS in solve_for_P);
1894    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1895    
1896    checkpoint44b_pre/_post
1897    o merge of relevant stuff from the ecco-branch:
1898      - genmake: removed $S64 overwrite for case SunOS
1899      - pkg/exf: update and corrections for field swapping and obcs
1900      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1901                  harmonized between ECCO and MITgcm
1902      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1903                      updated checkpointing_lev... lists for obcs
1904      - model/src: minor changes in forward_step, plot_field
1905                   added directive for divided adjoint in the_main_loop
1906      - pkg/mdsio: added mdsio_gl_slice
1907    
1908    o check parameters & config (chkpt44a_pre,post)
1909    o OBC and NonLin_FrSurf.
1910    
1911    checkpoint44
1912    o fix bug in mom_vi_del2uv
1913    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1914    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1915    o update AIM experiments (NCEP input files)
1916    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1917    o added some stuff for AD
1918    
1919    checkpoint43
1920    o added two new advection tests
1921    o added global 4x4 degree ocean test
1922    o added test of H&S94 with free surface on cube
1923    o some final mods for gradient check, adjoint,...
1924    
1925    checkpoint42
1926      Fixed AD-related problems:
1927    o Store directives up-to-date with re-arranged Adams-Bashforth
1928      (mainly thermodynamics.F)
1929    o New store directives for multi-dim. advection schemes
1930      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1931      * new common block and key passkey
1932      (mainly gad_advection.F)
1933    o Modified store directives for split of dynamics/thermodynamics
1934      for the case ALLOW_KPP
1935    o Cleaned argument list for timestep_tracer.F
1936    
1937    checkpoint41
1938    o re-formatted/added comments in prologues of key subroutines
1939      to work with protex
1940    
1941    checkpoint40
1942    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1943    o added FLT (floats) package from Arne along with demo. experiment
1944    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1945      implementation of forward-in-time forcing terms
1946    o more mods for non-linear free-surface including new variable
1947    o modified multi-dim method to work on cube
1948    o bug fix in KPP (from DM)
1949    
1950    checkpoint40pre9
1951    o added DST advection schemes
1952    o fix MPI bug on SGI's
1953    o modifications for non-linear free-surface
1954    o fixed conditionals for fixed flow/passive tracer only mode
1955    o added tension/strain form of stress tensor
1956    o changes to commenting of arguments for TAF/TAMC
1957    o added/updated many matlab scripts
1958    o added multi-dimensional advection method for tracers
1959      
1960    checkpoint40pre8
1961    o new package rw/
1962      Added method for dumping intermediate local arrays:
1963      mdsio_writetile - same as mdsio_writefield except works from inside
1964                        bi,bj loop
1965      mdsio_writelocal - same as mdsio_writetile except works for local
1966                         arrays
1967      write_local_r? - higher-level wrapper for mdsio_writelocal
1968      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1969      Example given at end of mom_vecinv.F that dumps some local arrays.
1970    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1971      control flux-form versus vector invariant code.
1972      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1973      or genmake -DISABLE ...
1974    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1975      (additional storing is now needed for case vecinv;
1976      currently nothing implemented to switch this storing off
1977      in case fluxform is used since no CPP flag available).
1978    
1979    checkpoint40pre7
1980    o bug fix in dynamics.F
1981      calc_viscosity called before k=1,Nr loop.
1982    o added some #ifdef's ALLOW_PASSIVE_TRACER
1983    o cleaned initialisations in ctrl_map_ini
1984      related to TAF
1985    
1986    checkpoint40pre6
1987    o split dynamics into thermodynamics & dynamics
1988    o corresponding split of calc_diffusivity into
1989      calc_diffusivity, calc_viscosity
1990      (kpp_calc_diff, kpp_calc_visc).
1991    o Added diffkr, kapgm to control variables
1992    o bug fix in gmredi_slope_limit for ldd97
1993    
1994    checkpoint40pre5
1995    o proper initialization of Adams-Bashforth time stepping
1996      + uses forward step for very first step of model (iter=0)
1997    o re-generated *all* output since almost all output is modified by this
1998      change (sorry but we've been putting this one off for about 2 years)
1999      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2000        *not* regenerated since they are already out of date and I don't
2001        want to create the impression that they are suddenly working.
2002    o removed KAP stuff for DEC's
2003    o modified/added many .cvsignore files in */code and */input
2004    o added new expt "solid-body.cs-32x32x1"
2005      + this uses an alternative form of ini_curvilinear_grid.F which
2006        is not necessarily any better than the current one...
2007    
2008    checkpoint40pre4
2009    o added re-initialisations of utrans,vtrans,rtrans in
2010      calc_common_factors which are crucial for TAF.
2011    o extended iMin,jMin range for calc_common_factors,
2012      calc_diffusivity
2013    o added option ALLOW_PASSIVE_TRACER
2014    o a few minor updates and fixes
2015    
2016    checkpoint40pre3
2017    o created calc_gtr1.F for gad package
2018    o split the_main_loop and re-introduced forward_step
2019    o some recomputations of nIter0 for TAMC
2020    
2021    checkpoint40pre2
2022    o Updated to latest branch of AJA, JMC
2023    o Added gradient check package
2024    o Added routines for passive tracer handling
2025    o Added carbon sequestration sensitivity experiment
2026    
2027    checkpoint39
2028     o Modifications and fixes to support TAMC
2029       (mainly missing or wrong directives)
2030     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2031       in addummy_in_stepping
2032     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2033     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2034     o Included following packages:
2035       cal: calendar
2036       exf: external forcing
2037       ecco: essential routines to control use of cal, exf
2038             (NB: this is not the full ECCO environment)
2039     o disabled some packages by default in genmake
2040    
2041    checkpoint38
2042     o see notes_c37_adj.txt
2043     o corrected wrong layer index in external_forcing_t
2044     o replaced the_main_loop/forward_step by the_main_loop
2045     o removed forceoutput from write_state
2046       (replaced criteria for initial/final state)
2047     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2048    
2049    checkpoint37
2050     o mdsio.F routine split and packaged in pkg/mdsio
2051       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2052        used unless genmake -disable=mdsio)
2053     o allow a more precise surface-geopotential gradient for the atmosphere
2054       taking into account the change in space of Alpha (=1/rho) at the surface.
2055     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2056       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2057     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2058       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2059       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2060     o Time-Average diagnostics defined as a pseudo package "timeave".
2061     o pickup files : old pickup (before c35) did not work with new code (c35
2062       and after) unless activating 2 commented lines in initialise-varia.
2063     o Non-Hydrostatic pickup file Pb fixed.
2064     o bug with Rigid-lid version (since c35) fixed.  
2065    
2066    checkpoint36
2067     o implement Crank-Nickelson barotropic time-stepping
2068     o recover Time-Average diagnostics
2069     o fix Pb in checkpoint (PR#19)
2070     o AIM become a standard package ; clean unused CPP_kees
2071    
2072    checkpoint35
2073     o subtantial rewrite of dynamics.f
2074     o allows staggered time-stepping
2075     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2076     o added bottom drag (linear + quadratic)
2077    
2078    checkpoint34
2079     o Modified exchange routines for correct reverse simulation.
2080     o Added verification output to comply with bug fix in impldiff.F
2081       as of c33 (exp2, natl_box).
2082     o Corrected store directives in dynamics.F
2083     o Corrected array boundaries in impldiff.F
2084     o Corrected array dimensions in gmredi.
2085       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2086     o Added routine GLOBAL_SUM_INT to global_sum.F
2087     o Added mdsio_gl.F for ECCO purposes.
2088    
2089    checkpoint33
2090     o Fixed bug in lower BC in impldiff.F
2091     o Fixed confusion about units of forcing arrays in FFIELDS.h
2092       namely Fu,Fv,Qnet,Qsw,EmPmR:
2093       - Removed verification/natl_box/code/external_fields_scale.F
2094         (did not differ from that in model/src)
2095       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2096         (see FFIELDS.h for description)
2097       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2098         kpp_calc.F and kpp_transport_t.F
2099       - Removed model/src/external_fields_scale.F and calls to it
2100       - verification/natl_box uses flux data with "atmospheric" sign so
2101         a special version of external_fields_load.F is used to
2102         change the data as it's read in. This way, the arrays
2103         have the right units and signs at all times tha a user could
2104         possibly use them.
2105     o Corrected genmake to delete a temporary file during configuration
2106    
2107    checkpoint32
2108     o Scaling of forcing fields moved from external_forcing.F to
2109       external_fields_scale.F, called directly after loading fields.
2110     o Surface relaxation terms added to surface tendency fields in
2111       extra subroutine.
2112     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2113       fields.
2114     o Changes in GMRedi to comply with packaging structure.
2115     o Modifications and bug fixes in KPP package.
2116     o Verification experiment for KPP added (verification/nat_box/)
2117    
2118    checkpoint31
2119     o Packages interface brought in line with defined standard
2120       -> new routines packages_...F
2121       -> changes in initialise_fixed.F, initialise_varia.F
2122       -> enables initialisation interface for ECCO package
2123     o Rescaling of external forcing fields immediately after read
2124       (removed from external_forcing.F)
2125       -> new: surface_fields_scale.F
2126       -> affects ini_foorcing.F, external_fields_load.F
2127     o Computation of surface tendencies before tendency updates.
2128       -> new: external_forcing_surf.F
2129     o Change of variable names useGMRedi, useKPP, useECCO
2130     o Further changes in dynamics.F, impldiff.F for TAMC
2131     o Tested for experiments 0, 2, 4.
2132       - not yet tested for GMRedi.
2133       - not yet tested for KPP.
2134    
2135    checkpoint30
2136     o Updates for OBCs
2137     o New experiment for test OBCs (internal_wave)
2138     o New output.txt in verification/exp4/results/
2139     o Updates for KPP: calculation of viscosity corrected, new variables
2140       kpp_dumpFreq and kpp_taveFreq
2141     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2142       and entry for T90 in genmake
2143    
2144    checkpoint29
2145     o packaged KPP and GM/Redi
2146    
2147    checkpoint28
2148     o Corrected initialization of hFacMin for difference vertical coordinates
2149     o Modified calculation of partial cell thickness to more robust algorithm
2150     o config_summary.F: replaced write_1D_... by write_0D_...
2151       read_write.F: added subroutines write_0D_...
2152     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2153       included some initialisations required for TAMC.
2154     o routine calc_isoslopes: modified sqrt computation to make it
2155       differentiable for zero argument.
2156     o routines dynamics, impldiff:
2157       included store directives and tape key computations required for TAMC.
2158     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2159    
2160    checkpoint27
2161     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2162       formulation works properly with variable resolution.
2163     o restructured the calling tree between the_model_main() and dynamics()
2164     o split initialise() into initialise_fixed() and initialise_varia()
2165     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2166       in new routine ini_psurf()
2167    
2168    checkpoint26
2169     o moved some #ifdef in optional routines to encompass everything
2170       except the argument declarations. This was using up some memory.
2171     o fixed macros like _ADT to work with both versions of Linux cpp
2172     o cleaned up some unused and uninitialized variables
2173       (helps when debugging with strict compile options)
2174     o split up CPP_EEOPTIONS.h into options and macros
2175       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2176     o patch for 2 processor JAM mode
2177    
2178    checkpoint25
2179     o updates for OBCs and NH
2180     o dramatically reduced memory usage
2181     o added "JAM" routines for use on Artic network
2182     o parameterization of convection by implicit vertical diffusion
2183     o added a diagnostic of convective index
2184     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2185       (this is was partly for OBCs and NH but also in anticipation of
2186        an explicit free-surface option)
2187     o initial state input files for U and V
2188    
2189    checkpoint24
2190     o Removed some spurious "REAL"s
2191     o Updated KPP to latest version from JPL
2192     o Added a COS(latitude) in horizontal viscosity
2193    
2194    checkpoint23
2195     o Added del^4 diffusion for salt and temperature
2196     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2197    
2198    checkpoint22
2199     o Made many small changes: implicit none, format(i5), etc...
2200     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2201    
2202    checkpoint21
2203     o Introduced new I/O package that supports direct-access records (mdsio.F)
2204     o Split-up mid-level I/O routines
2205     o Updated input data for experiments 0,1,2,4 and 5
2206     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2207    
2208    checkpoint20
2209     o Tidied up open-boundaries some more
2210     o Added non-hydrostatic code
2211     o Fixed some input data
2212     o Modified MPI start-up to work in "coupled" context.
2213    
2214    checkpoint19
2215     o Tidied up directory structure for verification experiments.
2216     o Added new code for open boundaries.
2217     o Corrected advective terms near boundaries.
2218     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2219     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2220     o Split default parameters out of ini_parms.F into set_defaults.F.
2221    
2222    checkpoint18
2223     o Further changes for optional code generation with
2224       CPP - ugh!
2225    
2226    checkpoint17
2227     o Beginning to incorporating modularity
2228       for supporting atmos. and ocean configs.
2229     o Small changes for TAMC complinace
2230     o New ultra simple test case. Barotropic box
2231       configuration "exp0".
2232    
2233    checkpoint16
2234     o Minor changes to exchange routines to support
2235       accumulation in reverse mode. Adjoint of an
2236       assignment is an addition.
2237     o Changes to support compilation by TAMC (LR(1)
2238       syntax) and by g77 under Linux ( 72 character
2239       limit ).
2240    
2241    checkpoint15
2242     Rewrote exchange routines to allow
2243     o General tile <-> tile connectivity.
2244     o TAMC reverse mode flag ( is this really needed? )
2245     o Variable width overlap and exchange region widths.
2246     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2247       shmput/shmget, VIA, SYSV shmem and every other cool
2248       communication method.
2249    
2250    checkpoint14
2251     Consistent isomorphism chages made. These allow dynamical core
2252     to support both pressure and meters as a vertical coordinate.
2253    
2254    checkpoint13
2255     Release which corrects global_max problem and a couple
2256     of KGM time-averaging diagnostic errors. Also contains
2257     a double-gyre experiment setup as well as the baseline
2258     4 degree global template. The double gyre template is
2259     organised to allow it to be applied automatically to
2260     the baseline configuration.
2261    
2262    branch-point-rdot
2263     A few tidy-ups have been made bt the real point of this
2264     check-point (excuse the pun) is to allow a branch to be
2265     made for the purposes of adding the rDot alterations.
2266     I don't want to commit the rDot to the main-trunk until
2267     we've actually tested it...
2268    
2269    checkpoint12
2270     Tidy up and added generic genmake script (formerly
2271     configure script).
2272     Released to testers.
2273    
2274    checkpoint11
2275     Re-arranged initialise() and introduced ini_vertical_grid()
2276     and ini_masks_etc().
2277    
2278    checkpoint10
2279     Introduced the configure script.
2280     Separated out the diags package.
2281     Added template for writing time-averages of tile/intermediate quantities.
2282     Updated SIZE.h in exp2 and made the data big-endian.
2283    
2284    checkpoint9
2285     MPI fix. Filename changes (meta/data). salbin*y stuff.
2286     General tidy-up.
2287     SST.bin SSS.bin added to verification/exp2
2288    
2289  checkpoint8  checkpoint8
2290   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.
2291   Works at 4x4 and 2.8125x2.8125 global   Works at 4x4 and 2.8125x2.8125 global

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