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revision 1.14 by cnh, Tue Sep 29 18:57:53 1998 UTC revision 1.481 by edhill, Mon May 2 21:24:12 2005 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o add fflags() to pkg/diagnostics which allows one to specify, on a
8      per-file basis, the file precision [default behavior is unchanged]
9    o added diagnostics to pkg/kpp, including computation of mixed layer
10      depth based on a temperature/density criterion
11    o updated verification/natl_box to test the new pkg/kpp diagnostics
12    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
13    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
14    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
15      not mnc -- this mistake was found by JMC and is now corrected
16    
17    checkpoint57g_post
18    o add Adams-Bashforth 3rd Order time stepping:
19      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
20      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
21    checkpoint57g_pre
22    
23    o make lambda[Theta,Salt]ClimRelax spatially varying
24      (default remains spatially uniform constant based on tau)
25    o added new control variables
26      * init. uVel, vVel, etanN
27      * lambda[Theta,Salt]ClimRelax
28    o separate masks used for ctrl_pack/unpack 'from write_grid' output
29      (suggested by G. Forget)
30    
31    checkpoint57f_post
32    o add parameter "baseTime" = model base time = time at iteration zero
33      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
34      account for baseTime shift
35    o move Coriolis arrays from PARAMS.h to GRID.h
36    checkpoint57f_pre
37    
38    o mnc-ifying the seaice package
39    o introduced an alternative length scale calculation for use in the limiting
40      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
41    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
42    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
43      as well as grad(vort3).  Made it compatible with both approximate form
44      for the cubed sphere and full form of these gradients.  Added flag
45      useFullLeith to select between approximate and full form.  
46    o add "d0" in getcon.F to reduce differences between compilers/platforms
47      update output.txt of exp. fizhi-gridalt-hs
48    o change port_rand funtion to allow to set the seed.
49    o fix obscure MNC bug involving conversion between reals and integers
50      - it caused no problems with certain (eg. gcc, ifc) compilers but the
51        new version is now more standards-compliant
52    o adjoint-related modifications
53      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
54      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
55      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
56    
57    checkpoint57e_post
58    o Adding eddy stress controls a la Ferreira et al.
59    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
60    
61    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
62      update output.txt of exp. fizhi-gridalt-hs
63    o add more "Z" dimensions and associated coordinate vars to MNC
64    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
65    o parameter calendarDumps: when set, approximate months (30-31 days) and years
66      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
67      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
68      months and years.  Requires pkg/cal.
69    o diagnostics: add pickup functionality
70      - off by default for backwards compatibility
71      - current version only uses MDSIO -- MNC will be added
72    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
73    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
74    
75    checkpoint57d_post
76    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
77    o modify verification/ideal_2D_oce so that it tests the creation of mnc
78      output from the diagnostics package
79    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
80    o make genmake2 more portable by using ".$FS" instead of ".f" for more
81      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
82    o add coordinate variables to the MNC output from the diagnostics package
83    o change MNC-flags default value: true when useMNC=TRUE
84    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
85      the ability (off by default) to read the grid information using MNC
86    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
87    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
88    o do snap-shot diagnostics at the middle of the time-interval (instead of
89      at the end).
90    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
91      new test for AIM with thSIce + slab-ocean
92    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
93    o move state variable diagnostics to the beginning of the time step ;
94      (note: still needs some work specially for snap-shot diagnostics)
95      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
96    
97    checkpoint57c_post
98    o Change testing option (-ieee) to get closer agreement between g77 & ifort
99    o generate new output.txt files on faulks with g77 & the new -ieee option
100    checkpoint57c_pre
101    
102    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
103      update output.txt of exp. global_ocean.90x40x15
104    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
105      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
106    o add saltFlux(+File) forcing capability with periodicExternalForcing
107    o allow to use pkg diagnostics for GM-Redi & ThSIce output
108    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
109    o improvements for the MNC output from DIAGNOSTICS:
110      - correct handling of the unlimitied dimension
111      - all dims now have associated coordinate variables
112      - variables located at U, V, and Corner ("Z") points are now written
113        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
114        *all* data points are output
115    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
116    o added pkg/seaice/seaice_monitor.F
117    o mdsio_readfield.F can now read files visible only to master MPI process.
118    o pkg/seaice: some test code for ice-modified ocean stress
119    o exf_getffields interpolation defaults to bilinear for all scalar forcing
120      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
121      spurious negative numbers for precipitation and humidity.  Will cause
122      some small numerical differences for integrations using pkg/exf/exf_interp.F.
123    o pkg/ctrl/
124      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
125        May be enabled via doPackDiag
126      *  introduce z-scaling of
127         + gradient (doZscalePack) and
128         + control (doZscaleUnpack)
129    o pkg/mdsio/
130      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
131      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
132    
133    checkpoint57b_post
134    o simplify options in diagnostics_fill arguments (remove weird combinations)
135    o fix MNC coordinate variables so that they now contain per-face index
136      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
137      general, EXCH2 grids are only aligned to a "local" coordinate system
138    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
139    o Implement instantaneous output within pkg diagnostics:
140      setting a negative frequency in data.diagnostics produces
141     "snap-shot" output (as opposed to time-average if freq > 0)
142    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
143      NOTE: change ptracer diagnostics name: use 2 characters to work with
144            more than 9 tracers. Add also diagnostics of advect & diffus flux.
145    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
146      becomes the coordinate variable for the 'T' dimension
147    o add CF-style coordinate variables to MNC
148      - just a first cut:  numbers are meaningless on the cubesphere and
149        missing along the T axis but otherwise it works!
150    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
151    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
152    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
153      this is based directly on what the model compute, so that the content of
154      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
155    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
156    o clean up build options files for SunOS, in particular
157      - remove -traditional from xmakedepend
158      - change -xarch=v9 to -xarch=native for f77
159      - restore use of make (not gmake)
160      - add CC=gcc if using g77
161    o changes per discussion of AM, JMC, & EH3 today:
162      - move redundant "grid" variables out of "state" -- in preparation of
163        creating proper CF-style coordinate variables and in recognition
164        that any/all grid variables can be easily copied (eg. w/NCO) from
165        the grid files into any of the other NetCDF files
166      - *always* output grid variables with MDSIO (this will eventually be
167        changed)
168      - output MNC grid file if useMNC is true
169    o every instance of _END_MASTER() has been found and replaced with
170      _END_MASTER( myThid ) in order to satisfy certain picky Sun
171      preprocessors
172    o re-arrange diagnostics pkg initialisation:
173     - allow each package to extend the available diagnostics list
174     - add some checking and fix small problems (multi-threaded, ...)
175     - new S/R diagnostics_fill (replace fill_diagnostics):
176       look through the short list of active diag. (instead of the long list)
177       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
178    
179    checkpoint57a_post
180    o this set of changes restores TAMC compatibility
181      tested for global_ocean.90x40x15 adjoint on trough
182      (what a pain)
183    
184    checkpoint57a_pre
185    o some modifs in tools/build_options for sunos
186    o call ctrl_pack for ctrl at end for optimcycle=0
187    
188    checkpoint57
189    o add horizontal bi-harmonic viscosity for vertical velocity
190      - new parameter viscA4W (defaults to viscA4)
191      - affects only non-hydrostatic code
192      - to be done: no-slip lateral boundary conditions
193    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
194    o implement Implicit Vertical advection for pTracers
195    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
196      (implemented also for implicit vertical diffusion & advection)
197    o OBCS: extend application of tracer open boundary conditions
198      to a strip beyond the boundary of width Olx/Oly
199    o add call monitor to TAF set of required calls (flow directives)
200      and include in natl_box_adjoint
201    o untangle a few ifdefs related to cost, ctrl, autodiff
202      untangel a few ALLOW_ECCO_OPTIMIZATION
203    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
204      (theta2, salt2 in ecco_cost_weights)
205    
206    checkpoint56c_post
207    o OBCS as control variables
208      - update ctrl_ad_diff.list, obcs_ad_diff.list
209      - remove balance of obcs controls from default
210      - fix index bug nobcs in ctrl_init
211      - fix dummy fields filen in ctrl_pack
212      - add dummy weights for obcs
213    o lsopt: comment out fort.94 output
214    o optim:
215      - remove unnecessary header files
216      - adjusted namelists
217      - add xerbla.F to Makefile
218    o exf:
219      - multiple modifications of exf_check_range
220      - unit change in exf_init_runoff from [m/year] to [m/s]
221    o mdsio:
222      - i/o-vector change debugLevel from debLevA to debLevB
223    
224    checkpoint56b_post
225    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
226      is called from DO_THE_MODEL_IO
227      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
228      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
229      - clean up PTRACERS_WRITE_TIMEAVE a little
230    o add another verification experiment that tests both the cfc-pkg and
231      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
232      reactive tendencies treated inline with regular timestepping
233    o testreport previously did a lousy job of comparing small numbers, so
234      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
235      implemented in the little c-progam tmp_cmpnum.c which is embedded in
236      testreport.
237    o ptracers_monitor: bug fix for MPI
238    
239    checkpoint56a_post
240    o GCHEM: finish reorganizating the package
241      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
242        (introduces another 3D-array for each passive tracer, but only if
243        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
244        gchemTendency is not needed because the timestep is done separately)
245      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
246      - GCHEM is now---more or less cleanly---separate from PTRACERS
247      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
248        so clear to me how that should be done in a general way.
249    o CFC: improve formatting of output in CFC_ATMOS
250    o PTRACERS:
251      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
252        that ALL experiments with ptracers enable can be checked. This makes
253        GCHEM_MONITOR obsolete.
254      - include a runtime parameter PTRACERS_monitorFreq that defaults to
255        monitorFreq
256      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
257    o add PTRACERS (PTR0[1-5]) to testreport output
258    o exf_check_range:
259      * default changed to .TRUE.
260      * will check values for niter0 if debLevA, every timestep if debLevB
261      * STOP in exf_check_range if 'out of range'
262      * range chosen generous to allow for potential extema
263      TBD: a version with stricter range
264           permitted range would be runtime parameters
265    o GMredi:
266      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
267      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
268      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
269    o GCHEM:
270      - move call to GCHEM_FORCING_SEP, so that it is now called before
271        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
272      - introduced a useGCHEM runtime flag and applied it everywhere.
273      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
274        this flag is now only visible within GCHEM-pkg routines.
275      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
276        be replaced by a 3D array that is computed before thermodynamics; for
277        this, the tracer ID iTracer had to be included into the parameter list
278        of ptracers_forcing
279      - set up forward_step to call gchem_forcing, that will replace
280        gchem_forcing_int in ptracers_forcing
281      - cleaning up
282    o small cleaning of exch2: remove files that are also in eesupp/src
283    
284    checkpoint56
285    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
286    o mnc: cleanup "full" files--fixes out-of-memory problem
287    o ECCO-GODAE
288      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
289      * fully merged and updated from SIO code
290        windstress sign change affects
291        - exf_inscal_[u/v]stress
292        - sign of xx_tau[u/v] adjustments
293        - signs in cost_scat
294      * ctrl_get_gen: avoid update of tau[u/v] for first few days
295      * natl_box_adjoint updated and compressed
296      * 2-level checkpoint switch added
297        (tested in EXP. 1 of natl_box_adjoint)
298      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
299    o SVD
300      * first complete, non-hacked version for SVD calculations
301      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
302        performed via direct access files admtlm_vector.it????
303        (via ctrl_[un]pack)
304      * optimcycle is used for ARPACK iteration counter
305        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
306      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
307        and add linear transforms where necessary
308      * controls are initial/final SST, SSS (can be extended; need to check
309        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
310    o mdsio: filename info to both stderr, stdout
311    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
312      from sign change
313    
314    checkpoint55j_post
315    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
316      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
317    o add consistent build directories and .cvsignore files to verification
318    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
319    o make all subroutines 30 or less characters in length for certain older
320      compilers to work (a thorough search only turns up two routines in
321      pkg/ptracers)
322    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
323      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
324    
325    checkpoint55i_post
326    o change arrays for total vertical diffusivity (2.D if explicit,
327      3.D if implicit) ; each ptracer uses its own background value.
328    o added mnc/NetCDF output capability to ocn_compon_interf
329      - added bits to verification/cpl_aim+ocn so that it can run on
330        ITRDA and other clusters without the mpirun "-wd" option
331    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
332      configuration
333    o give MNC the ability to create additional files rather than
334      exceeding a specified file size limit "MNC_MAX_FILESIZE"
335      - the default is just less than 2GB which is a practical limit
336        on many systems
337    o Compute the non-local term using either KPP vertical diffusivity (=default)
338       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
339    
340    checkpoint55h_post
341    o add verification test "vermix"
342    o remove all the *_ioinc flags and replace with the single global
343      outputTypesInclusive flag
344    o allow to set a vertical profile of vertical diffusivity for T & S
345    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
346    o useMNC moved from data.mnc to data.pkg
347    
348    checkpoint55g_post
349    o Renaming carbon AD experiments to comply with testreport conventions
350    o Updating adjoint of Held-Suarez hs94.1x64x5
351    o Fixing directives for non-ECCO forward_step, after ECCO directives
352      have been fixed to avoid recomp. of do_oceanic_phys
353      Works well for global_ocean.90x40x15,
354      but recomp. issue remains for carbon
355    o Updating adjoint output for natl_box_adjoint after
356      pkg/ecco has been modified (see taga c55d_post)
357    
358    checkpoint55f_post
359    o rename to timeave_init_fixed
360    
361    checkpoint55e_post
362    o some delicate re-shuffle of store directives to avoid one
363      extra call of do_oceanic_physics
364      affects ecco_the_main_loop.F, do_oceanic_physics.F
365      checkpoint_lev1_directives.h
366    o NB: this may break global_ocean adjoint temporarily,
367      but it is clear how to fix it. Will do later, need this now.
368    
369    checkpoint55d_post
370    o ECCO specific cost function terms (up-to-date with 1x1 runs)
371    o ecco_cost_weights is modified to 1x1 runs
372    o modifs to allow observations to be read in as
373      single file or yearly files
374    o enable to read exf forcing fields as either
375      single file or yearly files (flag useExfYearlyFields)
376    checkpoint55d_pre
377    
378    o switch between 2-level and 3-level checkpointing
379    o add ability of MNC to write local and "partial" (eg. 2D slices where
380      the full 3D field is never actually stored) arrays to NetCDF files
381      with the correct (that is, the complete multi-dimensional) set of
382      array indicies
383      - used in mom_vecinv() to write the diagFreq output
384      - tested (demonstrated) in verification/aim.5l_cs
385    o further mnc-ification
386      - add verification/lab_sea to the list with mnc setups
387      - fix undefined mnc v-names in cd_code
388      - add kpp to mnc output (both snapshot and timeave)
389    o non-hydrostatic code
390      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
391        in calc_gw.F
392      - defaults to viscAh
393      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
394        friction or Leith) in non-hydrostatic mode, as long as there is
395        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
396    o pkg/cost
397      extend simple cost functions to treat time mean quantities
398      (T,U,V) via cost_accumulate_state from cost_tile
399    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
400        be 2 times larger than the minimum size the advection scheme requires.
401        now get a perfect conservation of salt in advect_cs test-exp (updated)
402    o GGL90 (Gaspar's TKE mixed layer)
403      - add horizontal diffusion of TKE, requires exchanges in
404        do_fields_blocking_exchanges, horizontal diffusivity is zero by
405        default. In OPA there is no horizontal diffusion of TKE but the
406        mixing coefficients are computed from a horizontal average of TKE of
407        6 points or so. I think that diffusion has a little more physical
408        justification.
409      - clean up ggl90_calc in the hope of reducing memory usage (this hope
410        was in vain)
411      - mask tke-variable in ggl90_init
412    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
413    o fix biharmonic diffusion on CS-grid.
414    o more obcs stuff
415      - added obcs_external_fields_load as an alternative to the EXF-pkg option
416        for reading boundary values. This routine is called from
417        obcs_prescribe_read
418      - updated obcs_check
419      - changed sponge layer relaxation parameter units for days to seconds
420      - turned off sponge layer by default
421      - changed argument list of OBCS_CALC to myTime+deltaTclock
422      - fixed about 35 bugs in obcs_external_fields_load
423    
424    checkpoint55c_post
425    o obcs stuff
426      - new runtime flags useOBCSprescribe, useOBCSbalance
427      - re-arranged obcs_calc
428      - moved exf_getobcs to obcs_prescibe_read
429        obcs_prescibe_read is called after ORLANSKI stuff
430        and independent of it (executable can contain all).
431      - updated obcs_check
432      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
433        These may be necessary only if tangential velocities are
434        prescribed at OB, not sure, needs testing.
435    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
436      which simplifies the calls and passes the ifc check-bounds test
437    
438    checkpoint55b_post
439    o add a 2D scalar, Z location, exchange_2 routine.
440    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
441      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
442      affects advect_cs results (for the wrong reason): update output.txt
443    o use a more standard discretization for biharmonic viscosity ;
444     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
445      affects results of dome set-up: update output.txt
446    o fix gad_advection.F (CubedSphere part), back to version 1.23
447    o fix bug in mom_vi_del2uv.F (CubedSphere part).
448    
449    checkpoint55a_post
450    o merged code to
451      * prescribe/read time-dependent open boundaries
452        (works in conjunction with exf, cal)
453      * sponge layer code for open boundaries
454      * each boundary N/S/E/W now has its own CPP option
455        (healthy for the adjoint)
456    
457    checkpoint55
458    o up-to-date adjoint of previous breaks
459      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
460      - global_ocean_ebm: adjoint still needs fix (TLM ok)
461      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
462      - carbon: * remove tr1-related adjoint verification
463                * add ptracer as control variable
464    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
465      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
466    
467    checkpoint54f_post
468    o in verification/carbin/ remove experiment related to
469      ALLOW_PASSIVE_TRACER (array tr1 etc)
470      code_ad/ input_ad/ results_ad
471    
472    o add two new packages
473      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
474        + subject to optimization (memory)
475      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
476        + subject to reordering (many GOTOs in the original code)
477        + so far opps is called for every (i,j) point, and then operates in
478          the vertical; one may want to reorder the scheme in order operate in
479          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
480          fields)
481    o overhaul of IO so that we now have flags for MDSIO and/or MNC
482      - all verification tests compile and run with linux_ia32_g77
483      - defaults are compatible with current input files--nothing
484        should change if you were not previously using MNC
485      - MNC output has been added in numerous places (eg. timeave)
486        but there are still a few writes not yet do-able with MNC
487        (this is in progress)
488      - flags now allow for either/or/both use of MDSIO and MNC and
489        documentation will soon follow
490      - numerous small formatting cleanups for ProTeX
491    o add version info (via BUILD_INFO.h) to MNC and stdout
492    
493    checkpoint54e_post
494    o add two new packages
495      - pp81 (Packanowski and Philander, 1981), Richardson number and
496        stratification dependent mixing
497      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
498      - these scheme operate in a similar manner as KPP (without ghat, of
499        course), however there is only one diffusivity that is used for both
500        temperature and salinity (and passive tracers)ç
501    o add offline package
502    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
503      provided by Stephanie Dutkiewicz
504    o genmake2: add ability to search for C compilers and cleanup test output
505      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
506    
507    checkpoint54d_post
508    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
509    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
510      leading to additional shift by 5 days each year of integration
511       (i.e. leading to considerable offset over the years)
512    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
513    o start with no AB and no initial filtering (staggerTimeStep):
514      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
515    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
516      (external loading & cpl import/export stay in forward_step.F)
517    o update coupling interface to work with new staggerTimeStep
518    o change MDSIO ptracers_pickup.
519    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
520    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
521    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
522    
523    checkpoint54c_post
524    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
525      this affects (truncation error) output.txt of test-exp:
526       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
527    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
528    o change Qnet to always be the net heat flux, (+upward).
529      affects (truncation error) output of natl_box exp.: updated
530    o define the max number of passive tracers in PTRACERS_SIZE.h
531    o start to test mnc routinely in exp0
532    o add sea-ice loading (sIceLoad) as a new forcing field.
533    
534    checkpoint54b_post
535    o add testreport "-j JOBS" option for parallel builds (tested and pretty
536       impressive on Altix and Opteron systems)
537    o diagnostics can now write NetCDF files through the mnc package
538    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
539    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
540    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
541      affects (truncation error) output of lab_sea & natl_box exp.: updated
542    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
543    
544    checkpoint54a_post
545    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
546    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
547    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
548    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
549      + internal_wave (shift in writing cg2d_ini_res)
550    checkpoint54a_pre
551    
552    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
553      - modified verification/lab_sea and natl_box_adjoint accordingly
554    
555    checkpoint54
556    checkpoint53g_post
557    o prepare splitting of thermodynamics: store convect.counter in common block
558    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
559      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
560    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
561    o new parameter "nShapS": allow to treat differently S from T (nShapT)
562    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
563    o restore adjointability
564    
565    checkpoint53f_post
566    o modifications that affect AIM experiment results (update output.txt):
567      - no advection of S at top interface Nr (pkg/generic_advdiff)
568      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
569    o AIM pkg:
570      - include stability function into surf.Flux derivative relative to Tsurf
571      - calculate clear-sky radiation & surface temp. change (for diagnostics)
572    
573    checkpoint53e_post
574    o merged cylindrical coord configuration
575    o added rotating_tank experiment
576    checkpoint53e_pre
577    
578    checkpoint53d_post
579    o faulks upgraded: re-generate output.txt that have changed:
580       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
581    o Added Bryan and Lewis, 1979, vertical diffusivity profile
582    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
583    o added Sadourny discretization of Coriolis
584      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
585      - re-enabled use of omega3 (useAbsVorticity)
586    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
587      vector-invariant equations
588      - note: does *NOT* yet use same variable visc. for no-slip BC's.
589    o recoded the lateral boundary conditions for non-hydrostatic w, this time
590      hopefully without new bugs
591      - still to do: biharmonic friction for non-hydrostatic w
592    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
593    o regenerated output for global_ocean_ebm (using -ieee)
594    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
595      of mom_common/
596      - simple re-arrangement of instructions within computing loop
597    checkpoint53d_pre
598    
599    checkpoint53c_post
600    o new version of coupler for AIM+thSIce and Ocean models
601     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
602     - land: change Evaporation of snow
603     - aim with thSIce: fix bug in snow-precip.
604    o changes to calc_gw.F
605     - bug fix for w^2 term near the bottom boundary
606     - (hopefully) improve the lateral slip boundary condtions for use with
607        partial/looped cells
608      - because the bug fix changes two verification experiments anyway (exp5
609        and plume on slope), change the lateral boundary condition from half slip
610        to the value of no_slip_sides
611    o ebm package wasnt quite up to the parallel task. Fixed that.
612    o Adjoint of EBM package + verification
613      * TLM OK
614      * ADM not sufficient accuracy yet (needs further testing)
615    
616    checkpoint53b_post
617    o Commiting new energy balance model to repository
618      * package is pkg/ebm
619      * verif. is verification/global_ocean_ebm
620      * references are in ebm_driver.F
621    C      * X. Wang, P. Stone and J. Marotzke, 1999:
622    C        Global thermohaline circulation. Part I:
623    C        Sensitivity to atmospheric moisture transport.
624    C        J. Climate 12(1), 71-82
625    C      * X. Wang, P. Stone and J. Marotzke, 1999:
626    C        Global thermohaline circulation. Part II:
627    C        Sensitivity with interactive transport.
628    C        J. Climate 12(1), 83-91
629    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
630    C        Destabilization of the thermohaline circulation
631    C        by atmospheric eddy transports.
632    C        J. Climate 7(12), 1870-1882
633    o Will need long integration testing.
634    checkpoint53b_pre
635    
636    o created pkg/mom_common in preparation for variable viscosity code
637    o renamed and split ini_mnc_io
638    o pkg/land: only liquid water can diffuse or run-off
639    o AIM using land: soil wetness availability account for snow
640    o added printMapIncludesZeros to EEPARMS namelist
641    
642    checkpoint53a_post
643    o restore TAMC compatiility for exf_constants.h
644      (no usage of _d in .h)
645    o Additional storing in KPP in an attempt to fix
646      TAMC problem with adjoint of KPP code.
647      (no success...)
648      Identical code works fine with TAF.
649    o Fixed verification/natl_box_adjoint experiments.
650      Initial conditions for Experiments 4 and 5 are now
651      set to "SEAICE_initialHEFF=0", which is more reasonable,
652      and hence gives results closer to that of Experiment 2.
653      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
654    
655    checkpoint53
656    o stable checkpoint with up to date adjoint
657      TLM tests only run for 1st grdchk at the moment. Its unclear if
658      this is a code problem or a problem with resetting code for g_
659      variables that is being autogenerated wrong.
660      Otherwise:
661       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
662       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
663         are both still in chaos following their security messes.
664    
665    checkpoint52n_post
666    o various build (mostly genmake2) changes including:
667      - ability to build/run more easily within Cygwin and MacOS X
668      - more complicated Makefiles with a stronger dependence on Gnu Make
669    o pkg/seaice modifications
670      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
671        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
672        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
673      - changed proxy for geostrophic velocity and updated
674        verification/lab_sea/results/* accordingly
675      - removed ADI dynamic solver from pkg/seaice
676      - replaced all occurrences of 1/CSTICE or 1/CSUICE
677        they caused a segmentation fault under certain circumstances
678      - removed unused field WATR
679    o bug fix in exf-package:
680      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
681         now reflect that.
682    o small fixes in the cal-package:
683      - set reference date to first of January for the 'model'-calendar
684      - failing of cal_CheckDate in cal_FullDate now actually results in a
685        warning
686    o small modifications in exf-package to increase flexibility:
687      - change climtempfreeze from a constant to a runtime parameter that
688        is specified in data.exf_clim (default = -1.9)
689      - introduce runtime parameter windstressmax (default = 2.0) that is
690        specified in data.exf
691    o fix in pkg/thsice:
692      - update Evap (Tsf changes) to be consistent with Latent heat flux
693      - maintain snow precipitation unchanged (even if Tsf >=0).
694     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
695    
696    checkpoint52m_post
697    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
698      this does not change any of the results, because myIter=0 in swfrac always
699      lead to jwtype=2 (the default anyway), but the call makes little sense
700      as a default
701    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
702    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
703      atmospheric model (AIM) to use it ; add a "slab ocean" component.
704    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
705    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
706    o extending useSingleCpuIO option to work with new exch2 I/O format
707      - old-style, missing-tile I/O is still accessible by defining CPP
708        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
709    o monitor package can write to NetCDF files and/or STDOUT
710    o fix re-definition bug in MNC_GRID_INIT_ALL()
711    o doc/api_reference added
712      - a framework for building an API Reference Manual using all
713        the "protex" comments embedded in the code
714      - see pkg/generic_advdiff, pkg/mnc for examples
715    o MNC:
716      - make myThid the last argument for all subroutines
717      - new default for the grid files: NO halos
718      - add useMNC and other run-time flags
719      - separate per-file-group handling of the unlimited dimension
720      - early initialization of MNC w/ flags read at the eeboot stage
721        and lookup tables set in initialize_fixed
722      - write all MNC output to a freshly-created directory
723    o thermodynamics sea-ice (thsice) is now tested with testreport.
724    o test exp. advect_cs: use the standard cs32 grid ; update output.
725    o Added functionality to grdchk:
726      pick global i,j,k position (or nearest wet) where to perform check.
727    
728    checkpoint52l_post
729    o new land formulation:
730      a) use ground enthalpy as prognostic variable to ensure exact
731         energy conservation.
732      b) account for water temperature and for latent heat of freezing
733         in all processes (rain, run-off, ground storage)
734      c) compute surface and ground temperature implicitly.
735    o aim_v23 modification for new land model:
736      a) Treat separately land / ocean / sea-ice surface fluxes
737         to allow implicit computation of land & sea-ice surface temp.
738      b) add snow precipitation.
739    checkpoint52l_pre
740    
741    o fix problem (when 1 tile is empty) in min/max monitor.
742    o fix bug in timeAve (u,vZetatave in common block)
743    o no restoring terms under ice for pkg/seaice
744    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
745    o bug fix for pkg/seaice pickups
746    o change MNC call locations and add coordinate attributes
747    o mask vorticity at the corner ; affects global_ocean.cs output
748    o fix ini_curvilinear_grid ; test CS experiments with mpi
749    o aim.5l_cs: modify sea-ice fraction input file ; update output
750    o exf: Adding simple range check routine for exf fields after read
751    
752    checkpoint52k_post
753    o removed top-level directory "diags"
754      - we migrated these functions to pkg/timeave a long time ago
755    o fixed bug introduced in pkg/monitor
756    o accuracy ctrlprec = 32 insuffient for gradient checks using
757      averaged fields (I/O via cost_averages)
758      -> use ctrl.h in active_file*.F to control I/O precision.
759    o paramter list of CALL ADTHE_MAIN_LOOP
760    o added initial do_the_model_io to ecco
761    o set all ...Freq to zero after cost_final
762      taveFreq, dumpFreq, pChkptFreq
763    o MAIN and ECCO differentiability restored
764    
765    checkpoint52j_post
766    o fix nchklev in tamc.h for global_ocean...
767    o Bringing flow and store directives up-to-date
768    o Really weird thing!
769      call do_the_model_io from the_main_loop with parameters
770      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
771      TAF places a faulty re-call of initialise_varia
772      after cost_final call which should not be there!
773    checkpoint52j_pre
774    
775    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
776      error messages
777    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
778    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
779      debug output
780    o modfied mdsio_writefield.F to handle non-global files under exch2
781    o update AIM Cubed-Sphere exp (aim.5l_cs):
782      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
783    o update AIM Equatorial Channel exp:
784      use standard aim_v23 pkg and change the SST fields to be more realistic.
785    o globalFile now works with exch2
786    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
787      mon_vort3.F to make exch2 friendly with >1 tile per cube face
788    o limit timeave output for hi-res integrations
789    
790    checkpoint52i_post
791    o removed CPP_EEOPTIONS.h from verification/*/code
792    o updated the tiling for global_ocean_pressure
793    checkpoint52i_pre
794    
795    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
796      the old pkg/aim).
797    
798    checkpoint52h_pre
799    o shortened offending lines in exch2_send_rx?.template
800    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
801    o genmake2: add build & execute test for NetCDF code
802    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
803      old grid files, moved CPP_EEMACROS.h to pkg/exch2
804    o added useSingleCPUIO flag to monitor.F and mon_out.F
805    o added temporary hack for sea-ice dynamics on the cube:
806      metric terms are ignored and it is assumed that
807      there is no sea-ice on cube faces 1, 2, 4, and 5.
808    
809    checkpoint52f_post
810    o added exch2 cube routines to pkg/exch2
811    o modified hs94.cs-32x32x5 to use it
812    o added new grid files to hs94.cs-32x32x5
813    checkpoint52f_pre
814    
815    checkpoint52e_post
816    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
817      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
818    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
819      to work with implicit vertical advection and AB ;
820    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
821    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
822     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
823    checkpoint52e_pre
824    
825    o fix bug in impldiff when Nr=1 or Nr=2.
826    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
827    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
828    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
829      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
830    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
831    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
832    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
833    
834    checkpoint52d_post
835    o re-tiled many expts to allow comparison in multi-processor mode
836      - updated output accordingly
837      - changed hs94.128x64x5 to use intial T from file rather than use the
838        random number generator
839    o add infrastructure in model routines for fizhi and gridalt packages
840    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
841    o changes to permit hi-res, cubed-sphere, configuration
842      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
843      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
844      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
845        of surface winds for the cube
846      (A verification experiment, based on global_ocean.cs32x15, but with
847       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
848       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
849       complete with example surface forcing files and matlab scripts to look
850       at the output and compare it with that of global_ocean.cs32x15.)
851    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
852       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
853       to conform to the common rule.
854    o check-in the first version of the coupler + interfaces for multi-components
855       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
856       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
857       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
858       - ocean and atmos. share the same horizontal grid (no interpolation).
859       - exchanges between component and coupler is done in forward_step
860    o new verification experiment, cpl_aim+ocn:
861       coupled ocean - AIM atmosphere on cs32 grid.
862    
863    checkpoint52d_pre
864    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
865    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
866    
867    checkpoint52c_post
868    o Fixing OPTIONS files for use of exf:
869      - ALLOW_ECCO not needed
870      - ECCO_CPPOPTIONS.h should not be included from
871        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
872        as has been the case in the past
873      - All cal/exf related options are currently set in
874        single header file. Should remain so until we
875        agree on a consistent new policy.
876    o Removed all CPP options for cal package.
877      cal has no more CPP options.
878    o modified STOREs in GAD_ADVECTION
879    o corrected key comp. for passkey
880    
881    checkpoint52b_post
882    o new version: "thsice" of thermodynamic sea-ice pkg:
883     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
884     - modify fluxes but do not change theta directly;
885     - light cleaning of bulk_force pkg (still needed with thsice).
886     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
887       + output_thsice.txt to test thsice & bulk_force pkgs.
888    o put back grid & coriolis monitor output.
889    checkpoint52b_pre
890    
891    o call "do_the_model_io" at the beginning (=> dump initial state)
892    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
893    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
894      (need info on NUMBER_OF_PTRACERS)
895    o missing PTRACERS headers in some routines
896    o default tamc.h in pkg/autodiff supposed to crash
897      to ensure proper customization
898    
899    checkpoint52a_post
900    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
901      - moved surfaceTendencyTice from pkg/seaice to main code
902      - subroutine FREEZE_SURFACE now limits only surface temperature
903        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
904        => new output.txt for global_ocean.cs32x15 & global_with_exf
905      - keep the old version of FREEZE for backward compatibility;
906        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
907      - corresponding modifs for TAF directives
908    o added surface flux output variables to TIMEAVE_STATVARS
909    o time-averaged output for pkg/ptracers
910    o fix problem with ECCO-related divided adjoint
911      snapshot file was missing some ad-variables,
912      but no warning issued by TAF
913    
914    checkpoint52a_pre
915    o some bug fixes for #undef REAL4_IS_SLOW
916    
917    checkpoint52 = ecco_c52_e35
918    o after testing adjoints of checkpoint51u_post
919    
920    checkpoint51u_post
921    o this is the post-merge tag of the ecco-branch
922      (needs another clean checkout and re-testing)
923    o various natl_box_adjoint configs and results
924      but no input fields
925    o obcs adjoint not yet merged!
926    o adding ECCO global 1x1 and 2x2 degree configs
927    o updated/extended some store directives for seaice
928    o pkg/ecco now containes ecco-specific part of cost function
929    o top level routines the_main_loop, forward_step
930      supersede those in model/src/
931      previous input data.cost now in data.ecco
932      (new namelist ecco_cost_nml)
933    o in ctrl/ cleaned some cross-dependencies and updated CPP options
934    
935    checkpoint51t_post
936    o this is the pre-merge tag of the ecco-branch
937    
938    checkpoint51s_post
939    o cleanup: removed various obsolete #define-s
940    o pkg/grdchk
941      - renamed 'ph-grd 3' to 'grad-res'
942      - merged from ecco-branch
943        (remaining bug fixes for obcs gradient checks)
944      - additional high-precision output for testreport
945        (grep for 'precision_grdchk_result')
946    
947    checkpoint51r_post
948    o cleaned up or removed CPP_OPTIONS.h files
949    o updated results for some of the tests to reflect the new
950      optfiles (-ieee: -O0 instead of -O3)
951    
952    checkpoint51q_post
953    o cd_code:
954      - moved cd_scheme.F -> cd_code_scheme.F
955      - separate read_checkpoint from cd_code_ini_vars.F
956      - separated cd_code part from write_checkpoint
957      - updated AD_SOURCE, generated .flow
958      - added CD_CODE_VARS.h to the_main_loop
959      - Moving cd_code specific store dir.s to pkg/cd_code
960    o ctrl package totally restructured
961      - pack/unpack now optional and decoupled from
962        xx_/adxx_ I/O
963      - ctrl_pack/unpack cleaned
964        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
965      - confined inclusion of AD_CONFIG.h to where necessary.
966    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
967    
968    checkpoint51p_post
969    o create initial cd_code package
970      - WARNING: the initialization of fields within packages
971        is broken because INI_FIELDS (where READ_CHECKPOINT is
972        called) is called *before* PACKAGES_INIT_VARIABLES.
973        This seems to be backwards since
974        1) its important to initially zero the entire field including
975           the "halo" region
976        2) zeroing needs to be done *before* reading pickup info
977           and the pickup call might or might not happen in any
978           particular run
979      - this needs an overhaul for R2
980    o cleanup verification/*/code/GMREDI_OPTIONS.h
981    o cleanup testreport
982    
983    checkpoint51o_post
984    o bringing AD-related verif's up to date with genmake2
985      - carbon/
986      - global_ocean.90x40x15/
987      - hs.94.1x64x5/
988      - (front_relax/ )
989    o (more) consistent directory structure for AD-related verif.'s
990    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
991    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
992    o bug fix in find_alpha.F for MDJWF:
993      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
994        change rho -> rho-rhoConst
995      - replace call find_rho to find_rhonum
996    o initialisation of rFlx extended to full array (required by TAF)
997      and shifted to thermodynamics
998    o removed PTRACERS.h in ptracers routine
999    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1000    o Correcting initialisations for fVerU, fVerV.
1001    o helping TAF to recognize dependency on kUp for
1002      fVerU, fVerV
1003    o Replacing delZ by delR in pkg/ctrl/
1004    checkpoint51o_pre
1005    
1006    o undid all of cp51 pending some cleanups and discussion
1007    o added the [#include "AD_CONFIG.h"] statement to all files that need
1008       it for adjoint/tl #defines
1009     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1010     o removed tools/genmake since it no longer works
1011    
1012    checkpoint51n_post
1013    o modifications to make FREEZE flux visible to pkg/kpp
1014      - moved surfaceTendencyTice from pkg/seaice to main code
1015      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1016      - subroutine FREEZE now limits only surface temperature
1017        (this means new output.txt for global_ocean.90x40x15,
1018         global_ocean.cs32x15, and global_with_exf)
1019    o added surface flux output variables to TIMEAVE_STATVARS
1020    
1021    checkpoint51n_pre
1022    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1023    o added [#include "AD_CONFIG.h"] to all files that use the following
1024      defines:
1025      - ALLOW_ADJOINT_RUN
1026      - ALLOW_TANGENTLINEAR_RUN
1027      - ALLOW_ECCO_OPTIMIZATION
1028    
1029    checkpoint51m_post
1030    o incorporating changes to get TAMC/TAF working in genmake2
1031      - added new TAMC/TAF targets to the Makefile
1032      - various cleanups related to package handling
1033      - these changes should have no impact on the forward model
1034    
1035    checkpoint51l_post
1036    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1037     - faster algorithm for cal_addtime.F
1038     - higher precision arithmetic, where needed
1039     - pkg/exf *startdate variables changed from calendar date to
1040       model integration time
1041    
1042    checkpoint51l_pre
1043    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1044    o enable to apply restoring on S & T only in a latitude band.
1045    o update output (external_forcing_surf modif. change truncation errors)
1046       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1047    
1048    checkpoint51k_post
1049    o change default to: useNHMTerms=.FALSE.
1050     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1051       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1052     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1053        exp1, ideal_2D_oce
1054     - change data file of oceanic exp (leave the results unchanged for now)
1055       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1056    o set gravitySign automatically according to the vertical coordinate used
1057      (and change sign: back to "logical" value: +1 when R increases downward)
1058    o added an include barrier to the default CPP_OPTIONS.h and
1059      removed the #include "PACKAGES_CONFIG.h" from it
1060    o fix a bug in mom_fluxform (from chk51j_post)
1061    
1062    checkpoint51j_post
1063    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1064    o adjusted some flow directives (dynamics, thermodynamics)
1065    o added cubed-sphere case to test cost function
1066    o heckpoint_lev?_directives.h now include
1067      pkg-specific directives, whenever those are enabled.
1068    o Moving pkg-specific flow directives to corresponding pkg
1069      Moving pkg-specific differentiation list to corresponding pkg
1070      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1071      ---> conventions are
1072           - pkg_ad.flow
1073           - pkg_ad_diff.list
1074           - pkg_ad_check_lev?_dir.h
1075    
1076    checkpoint51i_post
1077    o merge of the branch-genmake2
1078      - knowingly breaks the older genmake
1079      - automatic generation of all ALLOW_${PKG_NAME} defines
1080      - new testreport supersedes older testscript
1081    o large number of package inclusion and header cleanups
1082    checkpoint51i_pre
1083    
1084    o new output for adjoin of global ocean vector invariant
1085    o fix for checkpoint of thermodynamic seaice and bulk_force
1086    o Steph gchem various cleanups
1087    
1088    checkpoint 51h_pre
1089    o fixed some single quotes
1090    o modify gchem pkg to be more versatile
1091    o modifications to clean up dic pkg
1092    o add pkg/cfc
1093    
1094    checkpoint51g_post
1095    o provide links for ARPACK and ADM*TLM
1096    o start removing verification/vero/
1097    o update AD-related stuff
1098      (in particular some IF-statements in model/src/ routines)
1099    o adding to verification/global_ocean.90x40x15/ adjoint of
1100      vector invariant setup
1101    
1102    checkpoint51f_post
1103    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1104    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1105      of tracer Green's fucntions for ocean inversion project.
1106    
1107    checkpoint51f_pre
1108    o Added on-the-fly spatial interpolation capability
1109        "USE_EXF_INTERPOLATION" to pkg/exf.
1110      - This is a temporary Cartesian-grid hack until
1111        the super-duper ESMF coupler becomes available.
1112      - See verification/global_with_exf/README for usage example.
1113      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1114        flags and modified pkg/seaice accordingly.
1115    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1116        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1117        non-local transport term.
1118    
1119    checkpoint51e_post
1120    o pkg/mom_vecinv:
1121      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1122      - add time-ave diagnostic of vorticity advection.
1123    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1124    o atmospheric geopotential: - include water vapor effect;
1125                                - use p^kappa in p* scaling.
1126    o land pkg: read initial state from files.
1127    o AIM : add stratospheric drag in the upper level
1128    
1129    checkpoint51d_post
1130    o change function ILNBLNK (=> last non-blank char.) to return zero
1131      (instead of the string length) when the string. char is empty
1132    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1133    o modif's to restore TAMC compatibility
1134      - avoid "_d" constructs in PARAMETER declarations
1135      - avoid interrupting lines by comment lines
1136    o Use cluster local disks for purely local I/O
1137      vs. globally visible disks needed for ctrl stuff
1138      (merged from ecco-branch)
1139      - new active_file_loc... and mdsio_..._loc routines
1140      - affected packages: autodiff, ctrl, grdchk, mdsio
1141    
1142    checkpoint51c_post
1143    o introducing integer flag debugLevel
1144      - debLevZero: suppress all output
1145      - debLevA: standard
1146      - debLevB: equivalent to current debugMode=.TRUE.
1147    o introducing pathname variable mdsioLocalDir for mdsio
1148      that can be specified at runtime
1149      (relevant for cluster I/O to local disk)
1150    `
1151    >>>checkpoint51b_post
1152    adjoint of ptracers
1153    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1154    o extended state in checkpoint_lev?, etc.
1155    o alternative ctrl/cost with tr1 or ptracer
1156    o new comlev1_bibj_ptracers
1157    o new ptracers.flow
1158    o made ptracers_forcing same as external_forcing_s
1159    o added verification for adjoint with ptracers
1160      - adm. grdchk fail so far
1161      - tlm. grdchk OK
1162      - checked tapelev/comlev recomputations: OK
1163    <<<checkpoint51b_pre
1164    
1165    checkpoint51a_post
1166    o added code for biogeochemistry package
1167      - new pkgs: dic, gchem
1168      - new subroutine in ptracers
1169    o modify code for biogeo packages
1170      - in model/src and pkg/ptracers
1171    
1172    checkpoint51
1173    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1174      - autodiff, ctrl, exf, grdchk, seaice
1175      kept separate packages
1176      - cost, ecco, obcs
1177    o updating verification/internal_wave, verification/lab_sea
1178      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1179    
1180    checkpoint50i_post
1181    o Preparing next differentiable checkpoint and sync
1182      of MAIN vs. ecco-branch
1183      - 1st step: this one is differentiable
1184      - 2nd step: next(! not this) checkpoint will have updated packages
1185                  from ecco-branch)
1186    
1187    checkpoint50h_post
1188    o new package "land": provide surface BC for AIM.
1189    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1190    o AIM: use true log-P extrapolation for near surface temp (= as in
1191        F.Molteni paper) ; update aim.5l_cs output.
1192    o New variable in PARM03 for more flexible pickups
1193    o somewhat cleaned package initialisation sequence for
1194      ctrl/ cost/ ecco/ in packages_... routines
1195    
1196    checkpoint50g_post
1197    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1198      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1199      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1200        made the default because of faster convergence than ADI
1201    
1202    checkpoint50f_post
1203    o exf totally restructured
1204      - replaced all exf_set_ routines by one generic exf_set_gen.F
1205        and made sure it's still differentiable
1206      - split exf_getffields.F into new exf_bulkformulae.F
1207      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1208      - updated adjoint/makefile and relevant verif. accordingly
1209    
1210    checkpoint50f_pre
1211     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1212          + change Evap over land. (update aim.5l_cs output)
1213     o added missing .cvsignores and made uniform across expts
1214     o changed configuration of tidal_basin_2d expt
1215     o added pkg/debug functions for tracing code in fatal crashes
1216     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1217     o new fn in pkg/monitor to stop model if solution grows too big
1218     o removed lots of single quotes from comments
1219    
1220    checkpoint50e_post
1221    o make KPP work with PTRACERS
1222     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1223       nearly a copy of kpp_transport_s
1224     - there is no analogue to SurfaceTendencyS, so I have to use
1225       gPtr(of the surface layer) instead
1226    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1227    checkpoint50e_pre
1228    
1229    checkpoint50d_post
1230    o change kpp output from multiple-record state files to single-record state
1231      files analogous to write_state.F
1232    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1233      analogous to the cg2d-related output.
1234    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1235      so that writing to internal file fn (with length 512) fails.
1236    checkpoint50d_pre
1237    
1238    checkpoint50c_post
1239    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1240    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1241    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1242    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1243    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1244    
1245    checkpoint50c_pre
1246    Merging from release1_p13:
1247    o bug fix for pkg/seaice dynamic solver
1248    o Added SEAICE_initialHEFF to pkg/seaice
1249    
1250    checkpoint50b_post
1251    o store u*,v* in gU,V instead of in guNm1,gvNm1
1252    o in order to put the momForcing out of the Adams-Bashforth:
1253      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1254      to timestep.F
1255    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1256    o re-generate output for highly sensitive test-exp:
1257       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1258    
1259    checkpoint50b_pre
1260    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1261    o corrected CPP option mismatch in exf_Bulk... functions for case
1262      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1263    
1264    checkpoint50a_post
1265    o Bug fix for merging between c50 and KPP.
1266      ikey was passed from thermodynamics to kpp_calc via
1267      common block rather than being recomputed in kpp_calc,
1268      in contradiction with new key itdkey.
1269      New key ikppkey created, and tamc.h headers updated.
1270    
1271    checkpoint50
1272    - 2nd step of merge with ecco-branch:
1273      merge changes in ecco-branch back into main trunk
1274    - bug fix in find_alpha
1275    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1276    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1277    - merged some sliced AD support routines
1278    
1279    checkpoint49
1280    merged from ecco-branch:
1281    o exf:
1282      - Enable initialisation of forcing fields to constant
1283        (runtime) values.
1284      - in exf_getffields.F
1285        Reduce i-/j-loop to interior domain, discarding overlaps.
1286        That also fixes wrong TAF-key computations for key_1, key_2
1287        with bulf formulae.
1288      - exf_init.F modify #ifdef for exf_init_evap
1289      - exf_getffieldrec.F, ctrl_getrec.F
1290        The following INT-usages are not safe:
1291          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1292          fldcount = int(fldsecs/fldperiod) + 1
1293        and were modified.
1294    o autodiff: checkpoint_lev...
1295      - updated storing for bulk formulae (some arrays were missing)
1296      - added state for seaice package
1297      - synchronized with main branch
1298    o DIVA:
1299      Modif.s in
1300      - the_main_loop.F
1301      - the_model_main.F
1302      and added cost_final_restore.F cost_final_store.F
1303      o With these changes, it is possible to fully separate
1304        the first forward run to compute the cost function (mdthe_main_loop)
1305        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1306        into separate model executions.
1307        This enables better tuning of DIVA to given queue sizes.
1308      o Loss of cost function value in consecutive DIVA runs is
1309        fixed by storing to 'costfinal' file.
1310      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1311        beginning/end of adjoint integration is accounted for.
1312      The current changes apply to TAF-1.4.26.
1313      TAF has one remaining bug, requiring one manual change
1314      (see MITgcm manual).
1315    o cal: synchronized between MAIN and ecco-branch
1316    
1317    checkpoint48i_post
1318    o Changes to restore differentiability of code w.r.t. previous tag
1319      (mostly adding new routines to make list and replacing
1320      pressure by totPhiHyd).
1321    o Updated and merged grdchk package
1322      - has both ADM and TLM checks
1323      - works for single- and multi-proc.
1324      - output cleaned
1325      - worked successfully for parallel DIVA
1326    o genmake:
1327      - Adding -platform=SP4
1328      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1329    o Modif. for DIVA:
1330      ctrl_unpack should not be called in intermediate DIVA interval.
1331      (similar thing would apply for active files such as
1332      tbar, sbar, psbar, which should not be reinitialised;
1333      only relevant for ecco-branch)
1334    
1335    checkpoint48h_post
1336    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1337    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1338    o Added SEAICE_initialHEFF to pkg/seaice
1339    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1340    
1341    checkpoint48g_post
1342    --- EOS:
1343    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1344      store total Potential in totPhyHyd for diagnostics & EOS.
1345    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1346    --- Pressure/geopotential gradient:
1347    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1348    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1349      ( changes results of global_ocean_pressure )
1350    o NLFS + z-coord.: add eta*Rho' contribution.
1351    o accurate phiHyd when using interface-W at the middle between 2 centers
1352     ( changes results of ideal_2D_oce )
1353    o includes r* 2nd term in potential gradient.
1354    
1355    checkpoint48f_post
1356    Merging from release1_p12:
1357    o Modifications for using pkg/exf with pkg/seaice
1358      - improved description of the various forcing configurations
1359      - added basic radiation bulk formulae to pkg/exf
1360      - units/sign fix for evap computation in exf_getffields.F
1361      - updated verification/global_with_exf/results/output.txt
1362    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1363      (SBO) core products, including oceanic mass, center-of-mass,
1364      angular, and bottom pressure (see pkg/sbo/README.sbo).
1365    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1366      to avoid negative values in shallow regions.
1367      - updated verification/natl_box/results/output.txt
1368      - updated verification/lab_sea/results/output.txt
1369    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1370    o Added useSingleCpuIO option (see PARAMS.h).
1371    o Updated useSingleCpuIO option in mdsio_writefield.F to
1372      work with multi-field files, e.g., for single-file pickup.
1373    o pkg/seaice:
1374      - bug fix in growth.F: QNET for no shortwave case
1375      - added HeffFile for specifying initial sea-ice thickness
1376      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1377    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1378      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1379    o pkg/seaice:
1380      - adjoint-friendly modifications
1381      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1382    
1383    checkpoint48e_post
1384    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1385    o dynamics: change definition of computational domain & adapt mom_fluxform
1386      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1387    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1388        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1389        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1390        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1391        inverted_barometer solid-body.cs-32x32x1
1392      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1393    
1394    checkpoint48d_post
1395    o in preparation for r*:
1396     a) use pre-computed gradient of hydrostatic potential:
1397        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1398     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1399        => affects results of glob_oce_pressure (different truncation error)  
1400      update output.txt of ideal_2D_oce & global_ocean_pressure
1401    
1402    checkpoint48d_pre
1403    o in preparation for r*:
1404      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1405      pass the 2 comp. of the grad. as arguments to momentum S/R.
1406      but for the moment, only used if it does not change the results.
1407    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1408    
1409    checkpoint48c_post
1410    Modifications in treatment of initial flux forcing controls
1411    to avoid extra storing of flux fields.
1412    
1413    checkpoint48c_pre
1414    o Added tidal_basin_2d experiment (currently 1D!)
1415    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1416    
1417    checkpoint48b_post
1418    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1419     (modification to pressure gradient not yet implemented)
1420    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1421      (for U & V) that are used for vertical advection of momentum.
1422    
1423    checkpoint48a_post
1424    o In preparation for r*, use temp. array to compute vertical transport
1425       in flux-form momentum pkg. => change results of few test-exp.
1426      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1427                        lab_sea, natl_box & plume_on_slope
1428    
1429    checkpoint48
1430    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1431    
1432    checkpoint47j_post
1433    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1434    o moved adexch from forward_step to addummy_in_stepping
1435    o added exch in ctrl_map_...
1436    o aveFreq.=0. at end of cost_final to avoid overwrite in
1437      reverse checkpointing loop
1438    o Yet more changes in gmredi:
1439      * adgmredi_calc_tensor
1440        avoiding all recomputation of gmredi_slope_limit
1441      * adgmredi_x/y/rtransport
1442        added flag for excessive storing to avoid recomp. of
1443        u/v/rtans, dTdx/y/z
1444        -> this is not really necessary and very memory-consuming
1445      * adgmredi_slope_psi:
1446        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1447      * gmredi_slope_limit
1448        re-activated full calculation of taperfct for case 'ac02'
1449    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1450    
1451    checkpoint47i_post
1452    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1453    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1454      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1455    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1456    o gmredi: fix few bugs.
1457    
1458    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1459    This will be a good checkpoint to plug into the ecco-branch.
1460    o few modif.'s to get latest version adjointed
1461      (mainly kick out code in ini_linear_phisurf)
1462    o modif's to run adjoint with exactConserv
1463    o case GM_BOLUS_ADVEC should be cleaned
1464      S/R gmredi_slope_psi should be cleaned
1465    o verification/carbon now has exactConserv=.TRUE.
1466    
1467    checkpoint47g_post
1468    o time-average AIM output: becomes independent from statvars time-average
1469      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1470    o After TAF bug fix:
1471      Tested adjoint of gmredi package.
1472      Tests were done with checkpoint47 rather than with latest
1473      checkpoint47f_post since the latter is broken for the adjoint
1474      verification/carbon/ contains both ADM and TLM gradient checks.
1475    Here they are, before they get changed/lost/stolen.
1476    Mostly modif.'s to fix numerical sensitivities.
1477    Gradient checks OK for
1478    - GM_taper_scheme:
1479      * clipping
1480      * ac02
1481      * linear
1482      * glw91
1483      * dm95
1484      * ldd97
1485    - GMREDI_OPTIONS:
1486      * GM_VISBECK_VARIABLE_K
1487      * GM_NON_UNITY_DIAGONAL
1488      * GM_EXTRA_DIAGONAL
1489      * GM_BOLUS_ADVEC
1490    in conjunction with data.gmredi parameters to be checked in
1491    in a few minutes under verification/carbon/code/
1492    
1493    checkpoint47f_post
1494    Merging from release1_p10:
1495    o modifications for using pkg/exf with pkg/seaice
1496      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1497        and SEAICE_EXTERNAL_FLUXES
1498      - pkg/exf CPP options EXF_READ_EVAP and
1499        EXF_NO_BULK_COMPUTATIONS
1500      - usage examples are Experiments 8 and 9 in
1501        verification/lab_sea/README
1502      - verification/lab_sea default experiment now uses
1503        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1504    
1505    checkpoint47e_post
1506    o created a tag prior to creating a branch
1507    
1508    checkpoint47d_post
1509    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1510      at the bottom boundary had an erroneous half slip boundary condition
1511    o added bottom drag and no slip boundary condition capabilities to
1512      oceanic pressure coordinates code
1513    o added new verification experiment global_ocean_pressure, this experiment is
1514      also described in the tutorial section of the manual
1515    checkpoint47d_pre
1516    
1517    checkpoint47c_post
1518    o Added a verification experiment for a global cubed-sphere ocean run
1519      -  verification/global_ocean.cubed32x32x30
1520      -  uses pkg/therm_seaice and pkg/bulk_forcing
1521    
1522    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1523    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1524      when using P-coordinate; only implemented for atmospheric config.
1525    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1526      NOTES: requires option NONLIN_FRSURF to be "#define".
1527    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1528    
1529    checkpoint47b_post
1530    Merging from release1_p9:
1531    o pkg/seaice
1532      - removed GOTO's and added taf directives
1533      - double precision constants to reduce the g77 (Linux)
1534        to F77 (SGI) differences reported in release1_p8
1535    o tools/genmake
1536      - added SGI options
1537    o verification/testscript
1538      - updated to that of checkpoint47a_post
1539    o verification/global_ocean.90x40x15/input/eedata
1540      - modified for SGI f77 compatibility
1541    o verification/lab_sea
1542      - added description of sea-ice model
1543      - added missing matlab routines
1544      - added test of thermodynamics parallelization
1545    
1546    checkpoint47a_post
1547    o new pkg: aim_v23
1548     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1549       for now, keep the same surface forcing as before.
1550     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1551     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1552     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1553    o add diagnostic of surface correction term in monitor output
1554    
1555    o bulk_force and therm_seaice
1556    - Two packages:  bulk_force (Bulk forcing)
1557      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1558    - Earlier integration from Stephaine Dutkiewicz
1559      and Patrick Heimbach.
1560    - Two ifdef statements for compile time,
1561       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1562    
1563    checkpoint47
1564    differentiable version of checkpoint46n_post
1565    o bug fix in quasihydrostaticterms
1566    o * "clean" adjoint code (in terms of extensive recomputations)
1567        can now be obtained for all GMREDI options (i.e. for
1568        - GM_VISBECK_VARIABLE_K
1569        - GM_NON_UNITY_DIAGONAL
1570        - GM_EXTRA_DIAGONAL
1571        - GM_BOLUS_ADVEC )
1572      * However, wrong gradient check problem remains unsolved.
1573      * New CPP options have been introduced for different
1574        tapering schemes
1575    o external_fields_load now part of differentiation list
1576    o pressure needs multiple storing;
1577      would be nice to have store_pressure at beginning or
1578      end of forward_step, e.g. by having phiHyd global (5-dim.)
1579      (NB: pressure is needed for certain cases in find_rho,
1580      which is also invoked through convective_adjustment).
1581    o recomputations in find_rho for cases
1582     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1583    o #define ATMOSPHERIC_LOADING should be differentiable
1584    o ini_forcing shifted to begining of initialise_varia
1585    o Incorporating QNVS line search routines into MITgcm
1586      (this is separate code, and therefore not under pkg)
1587      lsopt/, optim/
1588    o Updated verification/carbon/
1589      - #define GM_VISBECK_VARIABLE_K
1590      - GM_taper_scheme    = 'ldd97'    
1591    
1592    checkpoint46n_post
1593    Merging from release1_p8:
1594    o verification/natl_box:
1595      updating new external_fields_load routine
1596    o New package: pkg/seaice
1597      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1598      The sea-ice code is based on Hibler (1979-1980).
1599      Two sea-ice dynamic solvers, ADI and LSR, are included.
1600      In addition to computing prognostic sea-ice variables and diagnosing
1601      the forcing/external data fields that drive the ocean model,
1602      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1603      The implied surface heat flux is then stored in variable
1604      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1605      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1606      non-local transport term.  Because this call precedes model
1607      thermodynamics, temperature under sea-ice may not be "exactly" at
1608      the freezing point by the time theta is dumped or time-averaged.
1609      N.B.: fairly large differences in accuracy occur across
1610            different platforms/compilers; comparison between
1611            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1612            generated output gives:
1613       T           S           U           V
1614      C D M    c        m  s        m  s        m  s        m  s
1615      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1616      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1617      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1618    
1619      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1620    o GAD:
1621      - generated new common blocks to account for call of
1622        same gad routines with differing traceridentities
1623        (needed to modify tracerIdentity indices in GAD.h)
1624      - generated separate common blocks for case useCubedSphereExchange
1625        (Department of Futurology)
1626      - parameter lists to gmredi_?transport: added tracerIdentity
1627      - added new key indices to tamc.h
1628    o external_fields_load:
1629      - added this routine to TAF list
1630      - needed to make some common blocks global and additional storing
1631        along the same lines as exf package (checkpoint_lev?_directives.h)
1632    o exf:
1633      updated external forcing package
1634      - bug fixes carried over from ecco-branch
1635        (missing OBCS_OPTIONS.h in two routines)
1636      - enable easy to use "no forcing".
1637      - added exf I/O for atmospheric loading
1638      - added exf I/O for runoff data
1639      - transfered scaling between exf <-> MITgcm to exf namelist
1640    o Adding new verification experiment global_with_exf.
1641      This verification experiment is almost identical to the
1642      global_ocean.90x40x15 experiment, except that it uses
1643      the exf (and cal) package instead of the
1644      external_fields_load routine (cf README file).
1645    
1646    checkpoint46m_post
1647    o modified testscript to return -- when there are no lines of "%MON" output
1648    o added new flag "quasiHydrostatic" for QH mode
1649      and new routine quasihydrostaticterms()
1650    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1651      New routine: mom_u_coriolis_nh()
1652    o fixed sign of non-hydrostatic metric terms in u and v equations.
1653      Depend on correct sign of gravitySign.
1654    o added work.pc* to .cvsignore in aim directories using ifc
1655    o introduced flag for controllin non-hydrostatic metric terms
1656    o removed gravitySign from PARM04
1657    o switched to g77/ifc from pgf77 in aim experiments
1658    
1659    checkpoint46l_post
1660    o made convective adjustment work with pressure coordinates:
1661     - changed the direction of k-loop in convective_adjustment.F for the
1662       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1663     - adjusted the reference pressure k-index in convective_adjustment.F
1664     - adjusted the convection condition in convect.F (in analogy to
1665       calc_ivdc.F)
1666     - convective_adjustment no longer computes anything on the halos
1667     - removed the warnings about negative salinity from find_rho.F and
1668       find_alpha.F; instead the new routine look_for_neg_salinity, called
1669       at the beginning of find_rho, find_alpha, and find_beta, does a
1670       check of the entire slice, if CPP-option
1671       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1672    checkpoint46l_pre
1673    
1674    checkpoint46k_post
1675    o fixed the verification/global_ocean.90x40x15 experiment:
1676     - new bathymetry (the world according to A., JMC, and M.)
1677     - new initial fields and forcing fields (*.bin files)
1678     - new POLY3.COEFFS (for the next release one should switch to a full
1679       equation of state: JMD95P or MDJWF)
1680     - fixed several errors and redundancies in the data file
1681     - experiment uses looped cells
1682     - added matlab directory with diagnostic scripts for plotting of output
1683    
1684    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1685     - read AIM physics parameters from a file (data.aimphys)
1686     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1687    
1688    checkpoint46j_post
1689    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1690    o move wVel computation at the end of the time step, in S/R integr_continuity
1691    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1692    o update timeave pkg for wVel diagnostic.
1693    checkpoint46j_pre
1694    
1695    checkpoint46i_post
1696    o Clean up AIM package (and keep the results unchanged):
1697      include CPP_OPTION and use IMPLICT NONE in all routines ;
1698      declare all the variables _RL ; use _d 0 for all numerical constants.
1699      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1700    
1701    checkpoint46h_post
1702    o cleaned up the use of rhoNil and rhoConst.
1703      - rhoNil should only appear in the LINEAR equation of state, everywhere
1704        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1705        and the dynamical equations are all divided by rhoConst
1706    o introduced new parameter rhoConstFresh, a reference density of fresh
1707      water, to remove the fresh water flux's dependence on rhoNil. The default
1708      value is 999.8 kg/m^3
1709    o cleanup up external_forcing.F and external_forcing_surf.F
1710      - can now be used by both OCEANIC and OCEANICP
1711    checkpoint46h_pre
1712    
1713     Added code to convert surface volume flux (fresh water) into
1714     a mass flux when using P coordinates in the ocean (OCEANICP).
1715     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1716    
1717    checkpoint46g_post
1718    o Include a new diagnostic variable phiHydLow for the ocean model
1719      - in z-coordinates, it is the bottom pressure anomaly
1720      - in p-coordinates, it is the sea surface elevation
1721      - in both cases, these variable have global drift, reflecting the mass
1722        drift in z-coordinates and the volume drift in p-coordinates
1723      - included time averaging for phiHydLow, be aware of the drift!
1724    o depth-dependent computation of Bo_surf for pressure coordinates
1725      in the ocean (buoyancyRelation='OCEANICP')
1726      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1727        Theta, Salinity, and Pressure in the parameter list. This routine is
1728        presently contained in find_rho.F. This routine does not give the
1729        correct density for 'POLY3', which would be a z-dependent reference
1730        density.
1731    o cleaned up find_rho
1732      - removed obsolete 'eqn' from the parameter list.
1733    o added two new verification experiments: gop and goz
1734      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1735    checkpoint46g_pre
1736    
1737    checkpoint46f_post
1738    o Enable tangent linear (forward mode) gradient checks:
1739      - extended active file handling to g_... files
1740      - added TANGENT_SIMULATION to theSimulationMode
1741      - extended grdchk package accordingly
1742    o added tangent linear setup in verification/carbon/code_ftl
1743    o added adjoint setup in verification/front_relax/code_ad
1744    
1745    checkpoint46e_post
1746    o Added new equation of state -> MDJWF
1747      - EOS of McDougall et al., 2002, JAOT, submitted
1748      - caveat: the equation of state is only valid for a smaller (more
1749        realistic?) range of values than JMD95P/Z and UNESCO
1750      - added masks to the calculation of pressure in store_pressure
1751      - added more check values for density in check_eos (ini_eos.F), some of
1752        the old check values are out of the range of the MDJWF-eos, so don't
1753        expect perfect matches for those
1754    checkpoint46e_pre
1755    
1756    checkpoint46d_post
1757    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1758      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1759      case of pressure coordinates. eosType='JMD95Z' in
1760      combination with buoyancyRelation='OCEANICP' now causes an error.
1761    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1762      in find_alpha/beta.
1763    checkpoint46d_pre
1764    
1765    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1766      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1767    
1768    checkpoint46c_post
1769    o Changes necessary for ocean in p-coordinates
1770     -  Added new buoyancy relation = 'OCEANICP'
1771     -  Added new parameters = gravitySign (this used to be contained inside
1772        the factor dRdZ which I added when we first switched to R coordinates).
1773     X GM/Redi is not compatible (yet)
1774     X bottom drag and no-slip need to be debugged.
1775    checkpoint46c_pre
1776    
1777    checkpoint46b_post
1778    o Added new equation of state -> JMD95Z and JMD95P
1779      - EOS of Jackett and McDougall, 1995, JAOT
1780      - moved all EOS parameters into EOS.h
1781      - new routines ini_eos.F, store_pressure.F
1782    o Added UNESCO EOS, but not recommended because it requires
1783      in-situ temperature (see JMD95)
1784    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1785      unesco.f to be used with POLY3
1786    checkpoint46b_pre
1787    
1788    checkpoint46a_post
1789    o Added (atmospheric) pressure loading
1790      - new field in FFIELDS.h, etc...
1791      - new cpp flag ATMOSPHERIC_LOADING
1792    o Changed hFacC to _hFacC in calc_phi_hyd.F
1793    o Added SHORTWAVE_HEATING to some files for consistency
1794    checkpoint46a_pre
1795    
1796    checkpoint46
1797    further merges from release1_p5
1798    o new ctrl package
1799      - adopted from ECCO environment to enable optimization
1800      - added Eliassen Palm fluxes to controls
1801    o added Eliassen Palm flux controls to gradient check package
1802    o cost package
1803      - Compatible with new ctrl package
1804      - added Eliassen Palm cost hooks
1805      - modif's of existing cost functions
1806    o Adjoint-related bug fixes in kpp:
1807      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1808      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1809    o autodiff package
1810      - flow directives:
1811        + new for S/R do_the_model_io
1812        + enhanced for S/R checkpoint
1813        + new gmredi.flow
1814      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1815        disable adcommon.h/g_common.h by default.
1816      - fixed problem for adjoint of global_max
1817    o modified verification/carbon/
1818    o New setup for adjoint of global_ocean
1819    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1820    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1821    o incorporated hooks for sponge layer code (external_forcing.F)
1822    
1823    checkpoint45d_post
1824    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1825    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1826      (affects plume_on_slope "cg2d" output)
1827    o add new parameter deltaTfreesurf for free-surface time stepping
1828    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1829    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1830    o change phiMin in exp1 (to agree with documentation)
1831    o add new flags:
1832     - T,S forcing inside/outside Adams-Bashforth
1833     - turn off temp,salt advection and/or forcing
1834     - for each tracer, define internal flag for multiDimAdvection & A-B
1835    o monitor: change definition of KE to check conservation of Energy
1836    
1837    checkpoint45c_post
1838    o Removed f90 comments ("!")
1839    o Modified initialisations to enable exf package for MITgcm
1840      (without invoking ECCO_PACKAGE).
1841    o modifications to gradient check package (Martin Losch)
1842      - enable centered differences
1843      - modified format of standard output
1844    
1845    checkpoint45b_post
1846    o cleaned exchange calls in cg2d
1847    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1848    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1849      to configure barotropic setup (Martin Losch)
1850    o moved some initialisations within bi,bj loop in dynamics
1851      (TAF flow dependency)
1852    o in initialise_varia, moved call packages_init_variables
1853      before convective_adjustment_init
1854      (corresponding adjustment of TAF tape initialisation).
1855    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1856    
1857    checkpoint45a_post
1858    o compute Rho over the whole domain (extend iMin,jMin indices)
1859    o specific exchange for X-slice domain (case Ny=1)
1860    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1861    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1862    
1863    checkpoint44h_post = checkpoint45
1864    o Fix to restore differentiability:
1865      place at which packages_init_variables is called in
1866      initialise_varia is crucial for reverse control flow.
1867    o modifications in GMRedi to enable stable adjoint
1868      (corresponding modif's in thermodynamics, dynamics)
1869    o added missing hook for sponge layer code in external_forcing
1870    o modified test cost functions
1871    o storing in gad_advection (plus removal of write(0,*)!
1872    o missing headers TR1.h added in convective_adjustment routines
1873    o errorMessageUnit set non-equal zero in eeboot
1874      (conflict on some platforms, e.g. IBM SP3)
1875    o modified carbon verif.
1876    
1877    checkpoint44h_pre
1878    o vertical grid option: allow to put the Interface at the middle between
1879      2 cell-centers ; replace delZ in pkg/kpp by drF.
1880    o GM Advective form: Tracers are advected using the residual transport (=
1881      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1882    
1883    checkpoint44g_post
1884    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1885      results) ; ifdef missing in thermodynamics.F
1886    
1887    checkpoint44f_pre,checkpoint44f_post
1888    o added PTRACERS package
1889      This allows an arbitrary number of passive tracers to be integrated
1890      forward simultaneously with the dynamicaly model.
1891      + Implemented so far:
1892        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1893        - I/O and checkpointing
1894        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1895      + Not implemented so far:
1896        - KPP
1897        - OBCS
1898      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1899        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1900        line in data.pkg.
1901      + This package is disabled by default since it increases storage.
1902    
1903    
1904    o testscript: added -cleanup option
1905    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1906                 b) enable to filter 2D fields.
1907    
1908    checkpoint44e_pre,post
1909    o re-wrote convective adjustment to use pre-calculated weights
1910      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1911      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1912      Original calls to convect() still in place.
1913    
1914    chkpt44d_pre,post
1915    o added missing EXCLUDE_MONITOR flags
1916    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1917      (incompatible typ in MIN/MAX expressions caused problems
1918      on IBM SP3)
1919    o in genmake added variable MAKEDEPEND
1920      plus resetting for case SunOS
1921    o added timer_stats.c routine for IBM SP3
1922    o removed variables in dynamics
1923    !!! I forgot to create tag chkpt44d_pre !!!
1924    !!! But chkpt44d_pre = chkpt44c_post    !!!
1925    
1926    o real fresh water flux implemented with non-linear free-surface.
1927    
1928    chkpt44c_pre,post
1929    o few fix (mask in shap_s2, EmPmR in external_field_load,
1930      USE_NATURAL_BCS in solve_for_P);
1931    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1932    
1933    checkpoint44b_pre/_post
1934    o merge of relevant stuff from the ecco-branch:
1935      - genmake: removed $S64 overwrite for case SunOS
1936      - pkg/exf: update and corrections for field swapping and obcs
1937      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1938                  harmonized between ECCO and MITgcm
1939      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1940                      updated checkpointing_lev... lists for obcs
1941      - model/src: minor changes in forward_step, plot_field
1942                   added directive for divided adjoint in the_main_loop
1943      - pkg/mdsio: added mdsio_gl_slice
1944    
1945    o check parameters & config (chkpt44a_pre,post)
1946    o OBC and NonLin_FrSurf.
1947    
1948    checkpoint44
1949    o fix bug in mom_vi_del2uv
1950    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1951    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1952    o update AIM experiments (NCEP input files)
1953    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1954    o added some stuff for AD
1955    
1956    checkpoint43
1957    o added two new advection tests
1958    o added global 4x4 degree ocean test
1959    o added test of H&S94 with free surface on cube
1960    o some final mods for gradient check, adjoint,...
1961    
1962    checkpoint42
1963      Fixed AD-related problems:
1964    o Store directives up-to-date with re-arranged Adams-Bashforth
1965      (mainly thermodynamics.F)
1966    o New store directives for multi-dim. advection schemes
1967      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1968      * new common block and key passkey
1969      (mainly gad_advection.F)
1970    o Modified store directives for split of dynamics/thermodynamics
1971      for the case ALLOW_KPP
1972    o Cleaned argument list for timestep_tracer.F
1973    
1974    checkpoint41
1975    o re-formatted/added comments in prologues of key subroutines
1976      to work with protex
1977    
1978    checkpoint40
1979    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1980    o added FLT (floats) package from Arne along with demo. experiment
1981    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1982      implementation of forward-in-time forcing terms
1983    o more mods for non-linear free-surface including new variable
1984    o modified multi-dim method to work on cube
1985    o bug fix in KPP (from DM)
1986    
1987    checkpoint40pre9
1988    o added DST advection schemes
1989    o fix MPI bug on SGI's
1990    o modifications for non-linear free-surface
1991    o fixed conditionals for fixed flow/passive tracer only mode
1992    o added tension/strain form of stress tensor
1993    o changes to commenting of arguments for TAF/TAMC
1994    o added/updated many matlab scripts
1995    o added multi-dimensional advection method for tracers
1996      
1997    checkpoint40pre8
1998    o new package rw/
1999      Added method for dumping intermediate local arrays:
2000      mdsio_writetile - same as mdsio_writefield except works from inside
2001                        bi,bj loop
2002      mdsio_writelocal - same as mdsio_writetile except works for local
2003                         arrays
2004      write_local_r? - higher-level wrapper for mdsio_writelocal
2005      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2006      Example given at end of mom_vecinv.F that dumps some local arrays.
2007    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2008      control flux-form versus vector invariant code.
2009      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2010      or genmake -DISABLE ...
2011    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2012      (additional storing is now needed for case vecinv;
2013      currently nothing implemented to switch this storing off
2014      in case fluxform is used since no CPP flag available).
2015    
2016    checkpoint40pre7
2017    o bug fix in dynamics.F
2018      calc_viscosity called before k=1,Nr loop.
2019    o added some #ifdef's ALLOW_PASSIVE_TRACER
2020    o cleaned initialisations in ctrl_map_ini
2021      related to TAF
2022    
2023    checkpoint40pre6
2024    o split dynamics into thermodynamics & dynamics
2025    o corresponding split of calc_diffusivity into
2026      calc_diffusivity, calc_viscosity
2027      (kpp_calc_diff, kpp_calc_visc).
2028    o Added diffkr, kapgm to control variables
2029    o bug fix in gmredi_slope_limit for ldd97
2030    
2031    checkpoint40pre5
2032    o proper initialization of Adams-Bashforth time stepping
2033      + uses forward step for very first step of model (iter=0)
2034    o re-generated *all* output since almost all output is modified by this
2035      change (sorry but we've been putting this one off for about 2 years)
2036      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2037        *not* regenerated since they are already out of date and I don't
2038        want to create the impression that they are suddenly working.
2039    o removed KAP stuff for DEC's
2040    o modified/added many .cvsignore files in */code and */input
2041    o added new expt "solid-body.cs-32x32x1"
2042      + this uses an alternative form of ini_curvilinear_grid.F which
2043        is not necessarily any better than the current one...
2044    
2045    checkpoint40pre4
2046    o added re-initialisations of utrans,vtrans,rtrans in
2047      calc_common_factors which are crucial for TAF.
2048    o extended iMin,jMin range for calc_common_factors,
2049      calc_diffusivity
2050    o added option ALLOW_PASSIVE_TRACER
2051    o a few minor updates and fixes
2052    
2053    checkpoint40pre3
2054    o created calc_gtr1.F for gad package
2055    o split the_main_loop and re-introduced forward_step
2056    o some recomputations of nIter0 for TAMC
2057    
2058    checkpoint40pre2
2059    o Updated to latest branch of AJA, JMC
2060    o Added gradient check package
2061    o Added routines for passive tracer handling
2062    o Added carbon sequestration sensitivity experiment
2063    
2064    checkpoint39
2065     o Modifications and fixes to support TAMC
2066       (mainly missing or wrong directives)
2067     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2068       in addummy_in_stepping
2069     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2070     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2071     o Included following packages:
2072       cal: calendar
2073       exf: external forcing
2074       ecco: essential routines to control use of cal, exf
2075             (NB: this is not the full ECCO environment)
2076     o disabled some packages by default in genmake
2077    
2078    checkpoint38
2079     o see notes_c37_adj.txt
2080     o corrected wrong layer index in external_forcing_t
2081     o replaced the_main_loop/forward_step by the_main_loop
2082     o removed forceoutput from write_state
2083       (replaced criteria for initial/final state)
2084     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2085    
2086    checkpoint37
2087     o mdsio.F routine split and packaged in pkg/mdsio
2088       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2089        used unless genmake -disable=mdsio)
2090     o allow a more precise surface-geopotential gradient for the atmosphere
2091       taking into account the change in space of Alpha (=1/rho) at the surface.
2092     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2093       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2094     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2095       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2096       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2097     o Time-Average diagnostics defined as a pseudo package "timeave".
2098     o pickup files : old pickup (before c35) did not work with new code (c35
2099       and after) unless activating 2 commented lines in initialise-varia.
2100     o Non-Hydrostatic pickup file Pb fixed.
2101     o bug with Rigid-lid version (since c35) fixed.  
2102    
2103    checkpoint36
2104     o implement Crank-Nickelson barotropic time-stepping
2105     o recover Time-Average diagnostics
2106     o fix Pb in checkpoint (PR#19)
2107     o AIM become a standard package ; clean unused CPP_kees
2108    
2109    checkpoint35
2110     o subtantial rewrite of dynamics.f
2111     o allows staggered time-stepping
2112     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2113     o added bottom drag (linear + quadratic)
2114    
2115    checkpoint34
2116     o Modified exchange routines for correct reverse simulation.
2117     o Added verification output to comply with bug fix in impldiff.F
2118       as of c33 (exp2, natl_box).
2119     o Corrected store directives in dynamics.F
2120     o Corrected array boundaries in impldiff.F
2121     o Corrected array dimensions in gmredi.
2122       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2123     o Added routine GLOBAL_SUM_INT to global_sum.F
2124     o Added mdsio_gl.F for ECCO purposes.
2125    
2126    checkpoint33
2127     o Fixed bug in lower BC in impldiff.F
2128     o Fixed confusion about units of forcing arrays in FFIELDS.h
2129       namely Fu,Fv,Qnet,Qsw,EmPmR:
2130       - Removed verification/natl_box/code/external_fields_scale.F
2131         (did not differ from that in model/src)
2132       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2133         (see FFIELDS.h for description)
2134       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2135         kpp_calc.F and kpp_transport_t.F
2136       - Removed model/src/external_fields_scale.F and calls to it
2137       - verification/natl_box uses flux data with "atmospheric" sign so
2138         a special version of external_fields_load.F is used to
2139         change the data as it's read in. This way, the arrays
2140         have the right units and signs at all times tha a user could
2141         possibly use them.
2142     o Corrected genmake to delete a temporary file during configuration
2143    
2144    checkpoint32
2145     o Scaling of forcing fields moved from external_forcing.F to
2146       external_fields_scale.F, called directly after loading fields.
2147     o Surface relaxation terms added to surface tendency fields in
2148       extra subroutine.
2149     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2150       fields.
2151     o Changes in GMRedi to comply with packaging structure.
2152     o Modifications and bug fixes in KPP package.
2153     o Verification experiment for KPP added (verification/nat_box/)
2154    
2155    checkpoint31
2156     o Packages interface brought in line with defined standard
2157       -> new routines packages_...F
2158       -> changes in initialise_fixed.F, initialise_varia.F
2159       -> enables initialisation interface for ECCO package
2160     o Rescaling of external forcing fields immediately after read
2161       (removed from external_forcing.F)
2162       -> new: surface_fields_scale.F
2163       -> affects ini_foorcing.F, external_fields_load.F
2164     o Computation of surface tendencies before tendency updates.
2165       -> new: external_forcing_surf.F
2166     o Change of variable names useGMRedi, useKPP, useECCO
2167     o Further changes in dynamics.F, impldiff.F for TAMC
2168     o Tested for experiments 0, 2, 4.
2169       - not yet tested for GMRedi.
2170       - not yet tested for KPP.
2171    
2172    checkpoint30
2173     o Updates for OBCs
2174     o New experiment for test OBCs (internal_wave)
2175     o New output.txt in verification/exp4/results/
2176     o Updates for KPP: calculation of viscosity corrected, new variables
2177       kpp_dumpFreq and kpp_taveFreq
2178     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2179       and entry for T90 in genmake
2180    
2181    checkpoint29
2182     o packaged KPP and GM/Redi
2183    
2184    checkpoint28
2185     o Corrected initialization of hFacMin for difference vertical coordinates
2186     o Modified calculation of partial cell thickness to more robust algorithm
2187     o config_summary.F: replaced write_1D_... by write_0D_...
2188       read_write.F: added subroutines write_0D_...
2189     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2190       included some initialisations required for TAMC.
2191     o routine calc_isoslopes: modified sqrt computation to make it
2192       differentiable for zero argument.
2193     o routines dynamics, impldiff:
2194       included store directives and tape key computations required for TAMC.
2195     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2196    
2197    checkpoint27
2198     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2199       formulation works properly with variable resolution.
2200     o restructured the calling tree between the_model_main() and dynamics()
2201     o split initialise() into initialise_fixed() and initialise_varia()
2202     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2203       in new routine ini_psurf()
2204    
2205    checkpoint26
2206     o moved some #ifdef in optional routines to encompass everything
2207       except the argument declarations. This was using up some memory.
2208     o fixed macros like _ADT to work with both versions of Linux cpp
2209     o cleaned up some unused and uninitialized variables
2210       (helps when debugging with strict compile options)
2211     o split up CPP_EEOPTIONS.h into options and macros
2212       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2213     o patch for 2 processor JAM mode
2214    
2215    checkpoint25
2216     o updates for OBCs and NH
2217     o dramatically reduced memory usage
2218     o added "JAM" routines for use on Artic network
2219     o parameterization of convection by implicit vertical diffusion
2220     o added a diagnostic of convective index
2221     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2222       (this is was partly for OBCs and NH but also in anticipation of
2223        an explicit free-surface option)
2224     o initial state input files for U and V
2225    
2226    checkpoint24
2227     o Removed some spurious "REAL"s
2228     o Updated KPP to latest version from JPL
2229     o Added a COS(latitude) in horizontal viscosity
2230    
2231    checkpoint23
2232     o Added del^4 diffusion for salt and temperature
2233     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2234    
2235    checkpoint22
2236     o Made many small changes: implicit none, format(i5), etc...
2237     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2238    
2239    checkpoint21
2240     o Introduced new I/O package that supports direct-access records (mdsio.F)
2241     o Split-up mid-level I/O routines
2242     o Updated input data for experiments 0,1,2,4 and 5
2243     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2244    
2245    checkpoint20
2246     o Tidied up open-boundaries some more
2247     o Added non-hydrostatic code
2248     o Fixed some input data
2249     o Modified MPI start-up to work in "coupled" context.
2250    
2251    checkpoint19
2252     o Tidied up directory structure for verification experiments.
2253     o Added new code for open boundaries.
2254     o Corrected advective terms near boundaries.
2255     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2256     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2257     o Split default parameters out of ini_parms.F into set_defaults.F.
2258    
2259    checkpoint18
2260     o Further changes for optional code generation with
2261       CPP - ugh!
2262    
2263    checkpoint17
2264     o Beginning to incorporating modularity
2265       for supporting atmos. and ocean configs.
2266     o Small changes for TAMC complinace
2267     o New ultra simple test case. Barotropic box
2268       configuration "exp0".
2269    
2270    checkpoint16
2271     o Minor changes to exchange routines to support
2272       accumulation in reverse mode. Adjoint of an
2273       assignment is an addition.
2274     o Changes to support compilation by TAMC (LR(1)
2275       syntax) and by g77 under Linux ( 72 character
2276       limit ).
2277    
2278  checkpoint15  checkpoint15
2279   Rewrote exchange routines to allow   Rewrote exchange routines to allow
2280   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.

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