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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.493 by adcroft, Tue May 31 18:27:24 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 added pkg/runclock: allows user to terminate run based on wall clock
8    o added non-hydrostatic scaling parameter: nh_am2
9    o pkg/my82: futile attempt to make results compiler-independent by adding
10      some "_d 0", etc. no effect.
11    o for mnc output, fill the 'T' coordinate var with myTime and create a
12      separate 'iter' variable for iteration count
13    o pkg/diagnostics:
14      add new capability: output of Global/Regional & per-level statistics ;
15      tested against monitor output (including land & thSIce) on various exp.
16    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
17    
18    checkpoint57h_done
19      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
20      data.diagnostics, data.gchem, data.ptracers) is done.
21    
22    o pkg/diagnostics: prepare for Global/Regional statistics.
23      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
24    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
25      and rename it: DIFFERENT_MULTIPLE
26    
27    checkpoint57h_post
28    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
29    o pkg/diagnostics: change output frequency, now in seconds (instead
30      of Nb of iterations). This requires to change data.diagnostics.
31    checkpoint57h_pre
32    
33    o in mnc, let the user create the output dir if both mnc_outdir_date
34      and mnc_outdir_num are false
35    o add fflags() to pkg/diagnostics which allows one to specify, on a
36      per-file basis, the file precision [default behavior is unchanged]
37    o added diagnostics to pkg/kpp, including computation of mixed layer
38      depth based on a temperature/density criterion
39    o updated verification/natl_box to test the new pkg/kpp diagnostics
40    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
41    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
42    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
43      not mnc -- this mistake was found by JMC and is now corrected
44    
45    checkpoint57g_post
46    o add Adams-Bashforth 3rd Order time stepping:
47      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
48      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
49    checkpoint57g_pre
50    
51    o make lambda[Theta,Salt]ClimRelax spatially varying
52      (default remains spatially uniform constant based on tau)
53    o added new control variables
54      * init. uVel, vVel, etanN
55      * lambda[Theta,Salt]ClimRelax
56    o separate masks used for ctrl_pack/unpack 'from write_grid' output
57      (suggested by G. Forget)
58    
59    checkpoint57f_post
60    o add parameter "baseTime" = model base time = time at iteration zero
61      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
62      account for baseTime shift
63    o move Coriolis arrays from PARAMS.h to GRID.h
64    checkpoint57f_pre
65    
66    o mnc-ifying the seaice package
67    o introduced an alternative length scale calculation for use in the limiting
68      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
69    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
70    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
71      as well as grad(vort3).  Made it compatible with both approximate form
72      for the cubed sphere and full form of these gradients.  Added flag
73      useFullLeith to select between approximate and full form.  
74    o add "d0" in getcon.F to reduce differences between compilers/platforms
75      update output.txt of exp. fizhi-gridalt-hs
76    o change port_rand funtion to allow to set the seed.
77    o fix obscure MNC bug involving conversion between reals and integers
78      - it caused no problems with certain (eg. gcc, ifc) compilers but the
79        new version is now more standards-compliant
80    o adjoint-related modifications
81      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
82      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
83      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
84    
85    checkpoint57e_post
86    o Adding eddy stress controls a la Ferreira et al.
87    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
88    
89    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
90      update output.txt of exp. fizhi-gridalt-hs
91    o add more "Z" dimensions and associated coordinate vars to MNC
92    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
93    o parameter calendarDumps: when set, approximate months (30-31 days) and years
94      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
95      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
96      months and years.  Requires pkg/cal.
97    o diagnostics: add pickup functionality
98      - off by default for backwards compatibility
99      - current version only uses MDSIO -- MNC will be added
100    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
101    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
102    
103    checkpoint57d_post
104    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
105    o modify verification/ideal_2D_oce so that it tests the creation of mnc
106      output from the diagnostics package
107    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
108    o make genmake2 more portable by using ".$FS" instead of ".f" for more
109      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
110    o add coordinate variables to the MNC output from the diagnostics package
111    o change MNC-flags default value: true when useMNC=TRUE
112    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
113      the ability (off by default) to read the grid information using MNC
114    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
115    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
116    o do snap-shot diagnostics at the middle of the time-interval (instead of
117      at the end).
118    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
119      new test for AIM with thSIce + slab-ocean
120    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
121    o move state variable diagnostics to the beginning of the time step ;
122      (note: still needs some work specially for snap-shot diagnostics)
123      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
124    
125    checkpoint57c_post
126    o Change testing option (-ieee) to get closer agreement between g77 & ifort
127    o generate new output.txt files on faulks with g77 & the new -ieee option
128    checkpoint57c_pre
129    
130    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
131      update output.txt of exp. global_ocean.90x40x15
132    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
133      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
134    o add saltFlux(+File) forcing capability with periodicExternalForcing
135    o allow to use pkg diagnostics for GM-Redi & ThSIce output
136    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
137    o improvements for the MNC output from DIAGNOSTICS:
138      - correct handling of the unlimitied dimension
139      - all dims now have associated coordinate variables
140      - variables located at U, V, and Corner ("Z") points are now written
141        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
142        *all* data points are output
143    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
144    o added pkg/seaice/seaice_monitor.F
145    o mdsio_readfield.F can now read files visible only to master MPI process.
146    o pkg/seaice: some test code for ice-modified ocean stress
147    o exf_getffields interpolation defaults to bilinear for all scalar forcing
148      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
149      spurious negative numbers for precipitation and humidity.  Will cause
150      some small numerical differences for integrations using pkg/exf/exf_interp.F.
151    o pkg/ctrl/
152      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
153        May be enabled via doPackDiag
154      *  introduce z-scaling of
155         + gradient (doZscalePack) and
156         + control (doZscaleUnpack)
157    o pkg/mdsio/
158      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
159      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
160    
161    checkpoint57b_post
162    o simplify options in diagnostics_fill arguments (remove weird combinations)
163    o fix MNC coordinate variables so that they now contain per-face index
164      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
165      general, EXCH2 grids are only aligned to a "local" coordinate system
166    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
167    o Implement instantaneous output within pkg diagnostics:
168      setting a negative frequency in data.diagnostics produces
169     "snap-shot" output (as opposed to time-average if freq > 0)
170    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
171      NOTE: change ptracer diagnostics name: use 2 characters to work with
172            more than 9 tracers. Add also diagnostics of advect & diffus flux.
173    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
174      becomes the coordinate variable for the 'T' dimension
175    o add CF-style coordinate variables to MNC
176      - just a first cut:  numbers are meaningless on the cubesphere and
177        missing along the T axis but otherwise it works!
178    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
179    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
180    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
181      this is based directly on what the model compute, so that the content of
182      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
183    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
184    o clean up build options files for SunOS, in particular
185      - remove -traditional from xmakedepend
186      - change -xarch=v9 to -xarch=native for f77
187      - restore use of make (not gmake)
188      - add CC=gcc if using g77
189    o changes per discussion of AM, JMC, & EH3 today:
190      - move redundant "grid" variables out of "state" -- in preparation of
191        creating proper CF-style coordinate variables and in recognition
192        that any/all grid variables can be easily copied (eg. w/NCO) from
193        the grid files into any of the other NetCDF files
194      - *always* output grid variables with MDSIO (this will eventually be
195        changed)
196      - output MNC grid file if useMNC is true
197    o every instance of _END_MASTER() has been found and replaced with
198      _END_MASTER( myThid ) in order to satisfy certain picky Sun
199      preprocessors
200    o re-arrange diagnostics pkg initialisation:
201     - allow each package to extend the available diagnostics list
202     - add some checking and fix small problems (multi-threaded, ...)
203     - new S/R diagnostics_fill (replace fill_diagnostics):
204       look through the short list of active diag. (instead of the long list)
205       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
206    
207    checkpoint57a_post
208    o this set of changes restores TAMC compatibility
209      tested for global_ocean.90x40x15 adjoint on trough
210      (what a pain)
211    
212    checkpoint57a_pre
213    o some modifs in tools/build_options for sunos
214    o call ctrl_pack for ctrl at end for optimcycle=0
215    
216    checkpoint57
217    o add horizontal bi-harmonic viscosity for vertical velocity
218      - new parameter viscA4W (defaults to viscA4)
219      - affects only non-hydrostatic code
220      - to be done: no-slip lateral boundary conditions
221    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
222    o implement Implicit Vertical advection for pTracers
223    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
224      (implemented also for implicit vertical diffusion & advection)
225    o OBCS: extend application of tracer open boundary conditions
226      to a strip beyond the boundary of width Olx/Oly
227    o add call monitor to TAF set of required calls (flow directives)
228      and include in natl_box_adjoint
229    o untangle a few ifdefs related to cost, ctrl, autodiff
230      untangel a few ALLOW_ECCO_OPTIMIZATION
231    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
232      (theta2, salt2 in ecco_cost_weights)
233    
234    checkpoint56c_post
235    o OBCS as control variables
236      - update ctrl_ad_diff.list, obcs_ad_diff.list
237      - remove balance of obcs controls from default
238      - fix index bug nobcs in ctrl_init
239      - fix dummy fields filen in ctrl_pack
240      - add dummy weights for obcs
241    o lsopt: comment out fort.94 output
242    o optim:
243      - remove unnecessary header files
244      - adjusted namelists
245      - add xerbla.F to Makefile
246    o exf:
247      - multiple modifications of exf_check_range
248      - unit change in exf_init_runoff from [m/year] to [m/s]
249    o mdsio:
250      - i/o-vector change debugLevel from debLevA to debLevB
251    
252    checkpoint56b_post
253    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
254      is called from DO_THE_MODEL_IO
255      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
256      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
257      - clean up PTRACERS_WRITE_TIMEAVE a little
258    o add another verification experiment that tests both the cfc-pkg and
259      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
260      reactive tendencies treated inline with regular timestepping
261    o testreport previously did a lousy job of comparing small numbers, so
262      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
263      implemented in the little c-progam tmp_cmpnum.c which is embedded in
264      testreport.
265    o ptracers_monitor: bug fix for MPI
266    
267    checkpoint56a_post
268    o GCHEM: finish reorganizating the package
269      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
270        (introduces another 3D-array for each passive tracer, but only if
271        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
272        gchemTendency is not needed because the timestep is done separately)
273      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
274      - GCHEM is now---more or less cleanly---separate from PTRACERS
275      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
276        so clear to me how that should be done in a general way.
277    o CFC: improve formatting of output in CFC_ATMOS
278    o PTRACERS:
279      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
280        that ALL experiments with ptracers enable can be checked. This makes
281        GCHEM_MONITOR obsolete.
282      - include a runtime parameter PTRACERS_monitorFreq that defaults to
283        monitorFreq
284      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
285    o add PTRACERS (PTR0[1-5]) to testreport output
286    o exf_check_range:
287      * default changed to .TRUE.
288      * will check values for niter0 if debLevA, every timestep if debLevB
289      * STOP in exf_check_range if 'out of range'
290      * range chosen generous to allow for potential extema
291      TBD: a version with stricter range
292           permitted range would be runtime parameters
293    o GMredi:
294      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
295      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
296      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
297    o GCHEM:
298      - move call to GCHEM_FORCING_SEP, so that it is now called before
299        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
300      - introduced a useGCHEM runtime flag and applied it everywhere.
301      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
302        this flag is now only visible within GCHEM-pkg routines.
303      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
304        be replaced by a 3D array that is computed before thermodynamics; for
305        this, the tracer ID iTracer had to be included into the parameter list
306        of ptracers_forcing
307      - set up forward_step to call gchem_forcing, that will replace
308        gchem_forcing_int in ptracers_forcing
309      - cleaning up
310    o small cleaning of exch2: remove files that are also in eesupp/src
311    
312    checkpoint56
313    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
314    o mnc: cleanup "full" files--fixes out-of-memory problem
315    o ECCO-GODAE
316      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
317      * fully merged and updated from SIO code
318        windstress sign change affects
319        - exf_inscal_[u/v]stress
320        - sign of xx_tau[u/v] adjustments
321        - signs in cost_scat
322      * ctrl_get_gen: avoid update of tau[u/v] for first few days
323      * natl_box_adjoint updated and compressed
324      * 2-level checkpoint switch added
325        (tested in EXP. 1 of natl_box_adjoint)
326      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
327    o SVD
328      * first complete, non-hacked version for SVD calculations
329      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
330        performed via direct access files admtlm_vector.it????
331        (via ctrl_[un]pack)
332      * optimcycle is used for ARPACK iteration counter
333        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
334      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
335        and add linear transforms where necessary
336      * controls are initial/final SST, SSS (can be extended; need to check
337        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
338    o mdsio: filename info to both stderr, stdout
339    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
340      from sign change
341    
342    checkpoint55j_post
343    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
344      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
345    o add consistent build directories and .cvsignore files to verification
346    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
347    o make all subroutines 30 or less characters in length for certain older
348      compilers to work (a thorough search only turns up two routines in
349      pkg/ptracers)
350    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
351      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
352    
353    checkpoint55i_post
354    o change arrays for total vertical diffusivity (2.D if explicit,
355      3.D if implicit) ; each ptracer uses its own background value.
356    o added mnc/NetCDF output capability to ocn_compon_interf
357      - added bits to verification/cpl_aim+ocn so that it can run on
358        ITRDA and other clusters without the mpirun "-wd" option
359    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
360      configuration
361    o give MNC the ability to create additional files rather than
362      exceeding a specified file size limit "MNC_MAX_FILESIZE"
363      - the default is just less than 2GB which is a practical limit
364        on many systems
365    o Compute the non-local term using either KPP vertical diffusivity (=default)
366       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
367    
368    checkpoint55h_post
369    o add verification test "vermix"
370    o remove all the *_ioinc flags and replace with the single global
371      outputTypesInclusive flag
372    o allow to set a vertical profile of vertical diffusivity for T & S
373    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
374    o useMNC moved from data.mnc to data.pkg
375    
376    checkpoint55g_post
377    o Renaming carbon AD experiments to comply with testreport conventions
378    o Updating adjoint of Held-Suarez hs94.1x64x5
379    o Fixing directives for non-ECCO forward_step, after ECCO directives
380      have been fixed to avoid recomp. of do_oceanic_phys
381      Works well for global_ocean.90x40x15,
382      but recomp. issue remains for carbon
383    o Updating adjoint output for natl_box_adjoint after
384      pkg/ecco has been modified (see taga c55d_post)
385    
386    checkpoint55f_post
387    o rename to timeave_init_fixed
388    
389    checkpoint55e_post
390    o some delicate re-shuffle of store directives to avoid one
391      extra call of do_oceanic_physics
392      affects ecco_the_main_loop.F, do_oceanic_physics.F
393      checkpoint_lev1_directives.h
394    o NB: this may break global_ocean adjoint temporarily,
395      but it is clear how to fix it. Will do later, need this now.
396    
397    checkpoint55d_post
398    o ECCO specific cost function terms (up-to-date with 1x1 runs)
399    o ecco_cost_weights is modified to 1x1 runs
400    o modifs to allow observations to be read in as
401      single file or yearly files
402    o enable to read exf forcing fields as either
403      single file or yearly files (flag useExfYearlyFields)
404    checkpoint55d_pre
405    
406    o switch between 2-level and 3-level checkpointing
407    o add ability of MNC to write local and "partial" (eg. 2D slices where
408      the full 3D field is never actually stored) arrays to NetCDF files
409      with the correct (that is, the complete multi-dimensional) set of
410      array indicies
411      - used in mom_vecinv() to write the diagFreq output
412      - tested (demonstrated) in verification/aim.5l_cs
413    o further mnc-ification
414      - add verification/lab_sea to the list with mnc setups
415      - fix undefined mnc v-names in cd_code
416      - add kpp to mnc output (both snapshot and timeave)
417    o non-hydrostatic code
418      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
419        in calc_gw.F
420      - defaults to viscAh
421      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
422        friction or Leith) in non-hydrostatic mode, as long as there is
423        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
424    o pkg/cost
425      extend simple cost functions to treat time mean quantities
426      (T,U,V) via cost_accumulate_state from cost_tile
427    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
428        be 2 times larger than the minimum size the advection scheme requires.
429        now get a perfect conservation of salt in advect_cs test-exp (updated)
430    o GGL90 (Gaspar's TKE mixed layer)
431      - add horizontal diffusion of TKE, requires exchanges in
432        do_fields_blocking_exchanges, horizontal diffusivity is zero by
433        default. In OPA there is no horizontal diffusion of TKE but the
434        mixing coefficients are computed from a horizontal average of TKE of
435        6 points or so. I think that diffusion has a little more physical
436        justification.
437      - clean up ggl90_calc in the hope of reducing memory usage (this hope
438        was in vain)
439      - mask tke-variable in ggl90_init
440    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
441    o fix biharmonic diffusion on CS-grid.
442    o more obcs stuff
443      - added obcs_external_fields_load as an alternative to the EXF-pkg option
444        for reading boundary values. This routine is called from
445        obcs_prescribe_read
446      - updated obcs_check
447      - changed sponge layer relaxation parameter units for days to seconds
448      - turned off sponge layer by default
449      - changed argument list of OBCS_CALC to myTime+deltaTclock
450      - fixed about 35 bugs in obcs_external_fields_load
451    
452    checkpoint55c_post
453    o obcs stuff
454      - new runtime flags useOBCSprescribe, useOBCSbalance
455      - re-arranged obcs_calc
456      - moved exf_getobcs to obcs_prescibe_read
457        obcs_prescibe_read is called after ORLANSKI stuff
458        and independent of it (executable can contain all).
459      - updated obcs_check
460      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
461        These may be necessary only if tangential velocities are
462        prescribed at OB, not sure, needs testing.
463    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
464      which simplifies the calls and passes the ifc check-bounds test
465    
466    checkpoint55b_post
467    o add a 2D scalar, Z location, exchange_2 routine.
468    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
469      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
470      affects advect_cs results (for the wrong reason): update output.txt
471    o use a more standard discretization for biharmonic viscosity ;
472     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
473      affects results of dome set-up: update output.txt
474    o fix gad_advection.F (CubedSphere part), back to version 1.23
475    o fix bug in mom_vi_del2uv.F (CubedSphere part).
476    
477    checkpoint55a_post
478    o merged code to
479      * prescribe/read time-dependent open boundaries
480        (works in conjunction with exf, cal)
481      * sponge layer code for open boundaries
482      * each boundary N/S/E/W now has its own CPP option
483        (healthy for the adjoint)
484    
485    checkpoint55
486    o up-to-date adjoint of previous breaks
487      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
488      - global_ocean_ebm: adjoint still needs fix (TLM ok)
489      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
490      - carbon: * remove tr1-related adjoint verification
491                * add ptracer as control variable
492    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
493      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
494    
495    checkpoint54f_post
496    o in verification/carbin/ remove experiment related to
497      ALLOW_PASSIVE_TRACER (array tr1 etc)
498      code_ad/ input_ad/ results_ad
499    
500    o add two new packages
501      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
502        + subject to optimization (memory)
503      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
504        + subject to reordering (many GOTOs in the original code)
505        + so far opps is called for every (i,j) point, and then operates in
506          the vertical; one may want to reorder the scheme in order operate in
507          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
508          fields)
509    o overhaul of IO so that we now have flags for MDSIO and/or MNC
510      - all verification tests compile and run with linux_ia32_g77
511      - defaults are compatible with current input files--nothing
512        should change if you were not previously using MNC
513      - MNC output has been added in numerous places (eg. timeave)
514        but there are still a few writes not yet do-able with MNC
515        (this is in progress)
516      - flags now allow for either/or/both use of MDSIO and MNC and
517        documentation will soon follow
518      - numerous small formatting cleanups for ProTeX
519    o add version info (via BUILD_INFO.h) to MNC and stdout
520    
521    checkpoint54e_post
522    o add two new packages
523      - pp81 (Packanowski and Philander, 1981), Richardson number and
524        stratification dependent mixing
525      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
526      - these scheme operate in a similar manner as KPP (without ghat, of
527        course), however there is only one diffusivity that is used for both
528        temperature and salinity (and passive tracers)ç
529    o add offline package
530    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
531      provided by Stephanie Dutkiewicz
532    o genmake2: add ability to search for C compilers and cleanup test output
533      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
534    
535    checkpoint54d_post
536    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
537    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
538      leading to additional shift by 5 days each year of integration
539       (i.e. leading to considerable offset over the years)
540    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
541    o start with no AB and no initial filtering (staggerTimeStep):
542      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
543    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
544      (external loading & cpl import/export stay in forward_step.F)
545    o update coupling interface to work with new staggerTimeStep
546    o change MDSIO ptracers_pickup.
547    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
548    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
549    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
550    
551    checkpoint54c_post
552    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
553      this affects (truncation error) output.txt of test-exp:
554       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
555    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
556    o change Qnet to always be the net heat flux, (+upward).
557      affects (truncation error) output of natl_box exp.: updated
558    o define the max number of passive tracers in PTRACERS_SIZE.h
559    o start to test mnc routinely in exp0
560    o add sea-ice loading (sIceLoad) as a new forcing field.
561    
562    checkpoint54b_post
563    o add testreport "-j JOBS" option for parallel builds (tested and pretty
564       impressive on Altix and Opteron systems)
565    o diagnostics can now write NetCDF files through the mnc package
566    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
567    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
568    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
569      affects (truncation error) output of lab_sea & natl_box exp.: updated
570    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
571    
572    checkpoint54a_post
573    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
574    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
575    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
576    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
577      + internal_wave (shift in writing cg2d_ini_res)
578    checkpoint54a_pre
579    
580    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
581      - modified verification/lab_sea and natl_box_adjoint accordingly
582    
583    checkpoint54
584    checkpoint53g_post
585    o prepare splitting of thermodynamics: store convect.counter in common block
586    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
587      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
588    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
589    o new parameter "nShapS": allow to treat differently S from T (nShapT)
590    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
591    o restore adjointability
592    
593    checkpoint53f_post
594    o modifications that affect AIM experiment results (update output.txt):
595      - no advection of S at top interface Nr (pkg/generic_advdiff)
596      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
597    o AIM pkg:
598      - include stability function into surf.Flux derivative relative to Tsurf
599      - calculate clear-sky radiation & surface temp. change (for diagnostics)
600    
601    checkpoint53e_post
602    o merged cylindrical coord configuration
603    o added rotating_tank experiment
604    checkpoint53e_pre
605    
606    checkpoint53d_post
607    o faulks upgraded: re-generate output.txt that have changed:
608       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
609    o Added Bryan and Lewis, 1979, vertical diffusivity profile
610    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
611    o added Sadourny discretization of Coriolis
612      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
613      - re-enabled use of omega3 (useAbsVorticity)
614    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
615      vector-invariant equations
616      - note: does *NOT* yet use same variable visc. for no-slip BC's.
617    o recoded the lateral boundary conditions for non-hydrostatic w, this time
618      hopefully without new bugs
619      - still to do: biharmonic friction for non-hydrostatic w
620    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
621    o regenerated output for global_ocean_ebm (using -ieee)
622    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
623      of mom_common/
624      - simple re-arrangement of instructions within computing loop
625    checkpoint53d_pre
626    
627    checkpoint53c_post
628    o new version of coupler for AIM+thSIce and Ocean models
629     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
630     - land: change Evaporation of snow
631     - aim with thSIce: fix bug in snow-precip.
632    o changes to calc_gw.F
633     - bug fix for w^2 term near the bottom boundary
634     - (hopefully) improve the lateral slip boundary condtions for use with
635        partial/looped cells
636      - because the bug fix changes two verification experiments anyway (exp5
637        and plume on slope), change the lateral boundary condition from half slip
638        to the value of no_slip_sides
639    o ebm package wasnt quite up to the parallel task. Fixed that.
640    o Adjoint of EBM package + verification
641      * TLM OK
642      * ADM not sufficient accuracy yet (needs further testing)
643    
644    checkpoint53b_post
645    o Commiting new energy balance model to repository
646      * package is pkg/ebm
647      * verif. is verification/global_ocean_ebm
648      * references are in ebm_driver.F
649    C      * X. Wang, P. Stone and J. Marotzke, 1999:
650    C        Global thermohaline circulation. Part I:
651    C        Sensitivity to atmospheric moisture transport.
652    C        J. Climate 12(1), 71-82
653    C      * X. Wang, P. Stone and J. Marotzke, 1999:
654    C        Global thermohaline circulation. Part II:
655    C        Sensitivity with interactive transport.
656    C        J. Climate 12(1), 83-91
657    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
658    C        Destabilization of the thermohaline circulation
659    C        by atmospheric eddy transports.
660    C        J. Climate 7(12), 1870-1882
661    o Will need long integration testing.
662    checkpoint53b_pre
663    
664    o created pkg/mom_common in preparation for variable viscosity code
665    o renamed and split ini_mnc_io
666    o pkg/land: only liquid water can diffuse or run-off
667    o AIM using land: soil wetness availability account for snow
668    o added printMapIncludesZeros to EEPARMS namelist
669    
670    checkpoint53a_post
671    o restore TAMC compatiility for exf_constants.h
672      (no usage of _d in .h)
673    o Additional storing in KPP in an attempt to fix
674      TAMC problem with adjoint of KPP code.
675      (no success...)
676      Identical code works fine with TAF.
677    o Fixed verification/natl_box_adjoint experiments.
678      Initial conditions for Experiments 4 and 5 are now
679      set to "SEAICE_initialHEFF=0", which is more reasonable,
680      and hence gives results closer to that of Experiment 2.
681      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
682    
683    checkpoint53
684    o stable checkpoint with up to date adjoint
685      TLM tests only run for 1st grdchk at the moment. Its unclear if
686      this is a code problem or a problem with resetting code for g_
687      variables that is being autogenerated wrong.
688      Otherwise:
689       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
690       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
691         are both still in chaos following their security messes.
692    
693    checkpoint52n_post
694    o various build (mostly genmake2) changes including:
695      - ability to build/run more easily within Cygwin and MacOS X
696      - more complicated Makefiles with a stronger dependence on Gnu Make
697    o pkg/seaice modifications
698      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
699        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
700        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
701      - changed proxy for geostrophic velocity and updated
702        verification/lab_sea/results/* accordingly
703      - removed ADI dynamic solver from pkg/seaice
704      - replaced all occurrences of 1/CSTICE or 1/CSUICE
705        they caused a segmentation fault under certain circumstances
706      - removed unused field WATR
707    o bug fix in exf-package:
708      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
709         now reflect that.
710    o small fixes in the cal-package:
711      - set reference date to first of January for the 'model'-calendar
712      - failing of cal_CheckDate in cal_FullDate now actually results in a
713        warning
714    o small modifications in exf-package to increase flexibility:
715      - change climtempfreeze from a constant to a runtime parameter that
716        is specified in data.exf_clim (default = -1.9)
717      - introduce runtime parameter windstressmax (default = 2.0) that is
718        specified in data.exf
719    o fix in pkg/thsice:
720      - update Evap (Tsf changes) to be consistent with Latent heat flux
721      - maintain snow precipitation unchanged (even if Tsf >=0).
722     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
723    
724    checkpoint52m_post
725    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
726      this does not change any of the results, because myIter=0 in swfrac always
727      lead to jwtype=2 (the default anyway), but the call makes little sense
728      as a default
729    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
730    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
731      atmospheric model (AIM) to use it ; add a "slab ocean" component.
732    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
733    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
734    o extending useSingleCpuIO option to work with new exch2 I/O format
735      - old-style, missing-tile I/O is still accessible by defining CPP
736        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
737    o monitor package can write to NetCDF files and/or STDOUT
738    o fix re-definition bug in MNC_GRID_INIT_ALL()
739    o doc/api_reference added
740      - a framework for building an API Reference Manual using all
741        the "protex" comments embedded in the code
742      - see pkg/generic_advdiff, pkg/mnc for examples
743    o MNC:
744      - make myThid the last argument for all subroutines
745      - new default for the grid files: NO halos
746      - add useMNC and other run-time flags
747      - separate per-file-group handling of the unlimited dimension
748      - early initialization of MNC w/ flags read at the eeboot stage
749        and lookup tables set in initialize_fixed
750      - write all MNC output to a freshly-created directory
751    o thermodynamics sea-ice (thsice) is now tested with testreport.
752    o test exp. advect_cs: use the standard cs32 grid ; update output.
753    o Added functionality to grdchk:
754      pick global i,j,k position (or nearest wet) where to perform check.
755    
756    checkpoint52l_post
757    o new land formulation:
758      a) use ground enthalpy as prognostic variable to ensure exact
759         energy conservation.
760      b) account for water temperature and for latent heat of freezing
761         in all processes (rain, run-off, ground storage)
762      c) compute surface and ground temperature implicitly.
763    o aim_v23 modification for new land model:
764      a) Treat separately land / ocean / sea-ice surface fluxes
765         to allow implicit computation of land & sea-ice surface temp.
766      b) add snow precipitation.
767    checkpoint52l_pre
768    
769    o fix problem (when 1 tile is empty) in min/max monitor.
770    o fix bug in timeAve (u,vZetatave in common block)
771    o no restoring terms under ice for pkg/seaice
772    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
773    o bug fix for pkg/seaice pickups
774    o change MNC call locations and add coordinate attributes
775    o mask vorticity at the corner ; affects global_ocean.cs output
776    o fix ini_curvilinear_grid ; test CS experiments with mpi
777    o aim.5l_cs: modify sea-ice fraction input file ; update output
778    o exf: Adding simple range check routine for exf fields after read
779    
780    checkpoint52k_post
781    o removed top-level directory "diags"
782      - we migrated these functions to pkg/timeave a long time ago
783    o fixed bug introduced in pkg/monitor
784    o accuracy ctrlprec = 32 insuffient for gradient checks using
785      averaged fields (I/O via cost_averages)
786      -> use ctrl.h in active_file*.F to control I/O precision.
787    o paramter list of CALL ADTHE_MAIN_LOOP
788    o added initial do_the_model_io to ecco
789    o set all ...Freq to zero after cost_final
790      taveFreq, dumpFreq, pChkptFreq
791    o MAIN and ECCO differentiability restored
792    
793    checkpoint52j_post
794    o fix nchklev in tamc.h for global_ocean...
795    o Bringing flow and store directives up-to-date
796    o Really weird thing!
797      call do_the_model_io from the_main_loop with parameters
798      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
799      TAF places a faulty re-call of initialise_varia
800      after cost_final call which should not be there!
801    checkpoint52j_pre
802    
803    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
804      error messages
805    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
806    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
807      debug output
808    o modfied mdsio_writefield.F to handle non-global files under exch2
809    o update AIM Cubed-Sphere exp (aim.5l_cs):
810      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
811    o update AIM Equatorial Channel exp:
812      use standard aim_v23 pkg and change the SST fields to be more realistic.
813    o globalFile now works with exch2
814    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
815      mon_vort3.F to make exch2 friendly with >1 tile per cube face
816    o limit timeave output for hi-res integrations
817    
818    checkpoint52i_post
819    o removed CPP_EEOPTIONS.h from verification/*/code
820    o updated the tiling for global_ocean_pressure
821    checkpoint52i_pre
822    
823    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
824      the old pkg/aim).
825    
826    checkpoint52h_pre
827    o shortened offending lines in exch2_send_rx?.template
828    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
829    o genmake2: add build & execute test for NetCDF code
830    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
831      old grid files, moved CPP_EEMACROS.h to pkg/exch2
832    o added useSingleCPUIO flag to monitor.F and mon_out.F
833    o added temporary hack for sea-ice dynamics on the cube:
834      metric terms are ignored and it is assumed that
835      there is no sea-ice on cube faces 1, 2, 4, and 5.
836    
837    checkpoint52f_post
838    o added exch2 cube routines to pkg/exch2
839    o modified hs94.cs-32x32x5 to use it
840    o added new grid files to hs94.cs-32x32x5
841    checkpoint52f_pre
842    
843    checkpoint52e_post
844    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
845      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
846    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
847      to work with implicit vertical advection and AB ;
848    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
849    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
850     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
851    checkpoint52e_pre
852    
853    o fix bug in impldiff when Nr=1 or Nr=2.
854    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
855    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
856    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
857      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
858    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
859    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
860    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
861    
862    checkpoint52d_post
863    o re-tiled many expts to allow comparison in multi-processor mode
864      - updated output accordingly
865      - changed hs94.128x64x5 to use intial T from file rather than use the
866        random number generator
867    o add infrastructure in model routines for fizhi and gridalt packages
868    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
869    o changes to permit hi-res, cubed-sphere, configuration
870      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
871      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
872      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
873        of surface winds for the cube
874      (A verification experiment, based on global_ocean.cs32x15, but with
875       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
876       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
877       complete with example surface forcing files and matlab scripts to look
878       at the output and compare it with that of global_ocean.cs32x15.)
879    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
880       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
881       to conform to the common rule.
882    o check-in the first version of the coupler + interfaces for multi-components
883       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
884       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
885       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
886       - ocean and atmos. share the same horizontal grid (no interpolation).
887       - exchanges between component and coupler is done in forward_step
888    o new verification experiment, cpl_aim+ocn:
889       coupled ocean - AIM atmosphere on cs32 grid.
890    
891    checkpoint52d_pre
892    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
893    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
894    
895    checkpoint52c_post
896    o Fixing OPTIONS files for use of exf:
897      - ALLOW_ECCO not needed
898      - ECCO_CPPOPTIONS.h should not be included from
899        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
900        as has been the case in the past
901      - All cal/exf related options are currently set in
902        single header file. Should remain so until we
903        agree on a consistent new policy.
904    o Removed all CPP options for cal package.
905      cal has no more CPP options.
906    o modified STOREs in GAD_ADVECTION
907    o corrected key comp. for passkey
908    
909    checkpoint52b_post
910    o new version: "thsice" of thermodynamic sea-ice pkg:
911     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
912     - modify fluxes but do not change theta directly;
913     - light cleaning of bulk_force pkg (still needed with thsice).
914     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
915       + output_thsice.txt to test thsice & bulk_force pkgs.
916    o put back grid & coriolis monitor output.
917    checkpoint52b_pre
918    
919    o call "do_the_model_io" at the beginning (=> dump initial state)
920    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
921    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
922      (need info on NUMBER_OF_PTRACERS)
923    o missing PTRACERS headers in some routines
924    o default tamc.h in pkg/autodiff supposed to crash
925      to ensure proper customization
926    
927    checkpoint52a_post
928    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
929      - moved surfaceTendencyTice from pkg/seaice to main code
930      - subroutine FREEZE_SURFACE now limits only surface temperature
931        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
932        => new output.txt for global_ocean.cs32x15 & global_with_exf
933      - keep the old version of FREEZE for backward compatibility;
934        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
935      - corresponding modifs for TAF directives
936    o added surface flux output variables to TIMEAVE_STATVARS
937    o time-averaged output for pkg/ptracers
938    o fix problem with ECCO-related divided adjoint
939      snapshot file was missing some ad-variables,
940      but no warning issued by TAF
941    
942    checkpoint52a_pre
943    o some bug fixes for #undef REAL4_IS_SLOW
944    
945    checkpoint52 = ecco_c52_e35
946    o after testing adjoints of checkpoint51u_post
947    
948    checkpoint51u_post
949    o this is the post-merge tag of the ecco-branch
950      (needs another clean checkout and re-testing)
951    o various natl_box_adjoint configs and results
952      but no input fields
953    o obcs adjoint not yet merged!
954    o adding ECCO global 1x1 and 2x2 degree configs
955    o updated/extended some store directives for seaice
956    o pkg/ecco now containes ecco-specific part of cost function
957    o top level routines the_main_loop, forward_step
958      supersede those in model/src/
959      previous input data.cost now in data.ecco
960      (new namelist ecco_cost_nml)
961    o in ctrl/ cleaned some cross-dependencies and updated CPP options
962    
963    checkpoint51t_post
964    o this is the pre-merge tag of the ecco-branch
965    
966    checkpoint51s_post
967    o cleanup: removed various obsolete #define-s
968    o pkg/grdchk
969      - renamed 'ph-grd 3' to 'grad-res'
970      - merged from ecco-branch
971        (remaining bug fixes for obcs gradient checks)
972      - additional high-precision output for testreport
973        (grep for 'precision_grdchk_result')
974    
975    checkpoint51r_post
976    o cleaned up or removed CPP_OPTIONS.h files
977    o updated results for some of the tests to reflect the new
978      optfiles (-ieee: -O0 instead of -O3)
979    
980    checkpoint51q_post
981    o cd_code:
982      - moved cd_scheme.F -> cd_code_scheme.F
983      - separate read_checkpoint from cd_code_ini_vars.F
984      - separated cd_code part from write_checkpoint
985      - updated AD_SOURCE, generated .flow
986      - added CD_CODE_VARS.h to the_main_loop
987      - Moving cd_code specific store dir.s to pkg/cd_code
988    o ctrl package totally restructured
989      - pack/unpack now optional and decoupled from
990        xx_/adxx_ I/O
991      - ctrl_pack/unpack cleaned
992        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
993      - confined inclusion of AD_CONFIG.h to where necessary.
994    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
995    
996    checkpoint51p_post
997    o create initial cd_code package
998      - WARNING: the initialization of fields within packages
999        is broken because INI_FIELDS (where READ_CHECKPOINT is
1000        called) is called *before* PACKAGES_INIT_VARIABLES.
1001        This seems to be backwards since
1002        1) its important to initially zero the entire field including
1003           the "halo" region
1004        2) zeroing needs to be done *before* reading pickup info
1005           and the pickup call might or might not happen in any
1006           particular run
1007      - this needs an overhaul for R2
1008    o cleanup verification/*/code/GMREDI_OPTIONS.h
1009    o cleanup testreport
1010    
1011    checkpoint51o_post
1012    o bringing AD-related verif's up to date with genmake2
1013      - carbon/
1014      - global_ocean.90x40x15/
1015      - hs.94.1x64x5/
1016      - (front_relax/ )
1017    o (more) consistent directory structure for AD-related verif.'s
1018    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1019    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1020    o bug fix in find_alpha.F for MDJWF:
1021      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1022        change rho -> rho-rhoConst
1023      - replace call find_rho to find_rhonum
1024    o initialisation of rFlx extended to full array (required by TAF)
1025      and shifted to thermodynamics
1026    o removed PTRACERS.h in ptracers routine
1027    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1028    o Correcting initialisations for fVerU, fVerV.
1029    o helping TAF to recognize dependency on kUp for
1030      fVerU, fVerV
1031    o Replacing delZ by delR in pkg/ctrl/
1032    checkpoint51o_pre
1033    
1034    o undid all of cp51 pending some cleanups and discussion
1035    o added the [#include "AD_CONFIG.h"] statement to all files that need
1036       it for adjoint/tl #defines
1037     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1038     o removed tools/genmake since it no longer works
1039    
1040    checkpoint51n_post
1041    o modifications to make FREEZE flux visible to pkg/kpp
1042      - moved surfaceTendencyTice from pkg/seaice to main code
1043      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1044      - subroutine FREEZE now limits only surface temperature
1045        (this means new output.txt for global_ocean.90x40x15,
1046         global_ocean.cs32x15, and global_with_exf)
1047    o added surface flux output variables to TIMEAVE_STATVARS
1048    
1049    checkpoint51n_pre
1050    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1051    o added [#include "AD_CONFIG.h"] to all files that use the following
1052      defines:
1053      - ALLOW_ADJOINT_RUN
1054      - ALLOW_TANGENTLINEAR_RUN
1055      - ALLOW_ECCO_OPTIMIZATION
1056    
1057    checkpoint51m_post
1058    o incorporating changes to get TAMC/TAF working in genmake2
1059      - added new TAMC/TAF targets to the Makefile
1060      - various cleanups related to package handling
1061      - these changes should have no impact on the forward model
1062    
1063    checkpoint51l_post
1064    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1065     - faster algorithm for cal_addtime.F
1066     - higher precision arithmetic, where needed
1067     - pkg/exf *startdate variables changed from calendar date to
1068       model integration time
1069    
1070    checkpoint51l_pre
1071    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1072    o enable to apply restoring on S & T only in a latitude band.
1073    o update output (external_forcing_surf modif. change truncation errors)
1074       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1075    
1076    checkpoint51k_post
1077    o change default to: useNHMTerms=.FALSE.
1078     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1079       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1080     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1081        exp1, ideal_2D_oce
1082     - change data file of oceanic exp (leave the results unchanged for now)
1083       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1084    o set gravitySign automatically according to the vertical coordinate used
1085      (and change sign: back to "logical" value: +1 when R increases downward)
1086    o added an include barrier to the default CPP_OPTIONS.h and
1087      removed the #include "PACKAGES_CONFIG.h" from it
1088    o fix a bug in mom_fluxform (from chk51j_post)
1089    
1090    checkpoint51j_post
1091    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1092    o adjusted some flow directives (dynamics, thermodynamics)
1093    o added cubed-sphere case to test cost function
1094    o heckpoint_lev?_directives.h now include
1095      pkg-specific directives, whenever those are enabled.
1096    o Moving pkg-specific flow directives to corresponding pkg
1097      Moving pkg-specific differentiation list to corresponding pkg
1098      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1099      ---> conventions are
1100           - pkg_ad.flow
1101           - pkg_ad_diff.list
1102           - pkg_ad_check_lev?_dir.h
1103    
1104    checkpoint51i_post
1105    o merge of the branch-genmake2
1106      - knowingly breaks the older genmake
1107      - automatic generation of all ALLOW_${PKG_NAME} defines
1108      - new testreport supersedes older testscript
1109    o large number of package inclusion and header cleanups
1110    checkpoint51i_pre
1111    
1112    o new output for adjoin of global ocean vector invariant
1113    o fix for checkpoint of thermodynamic seaice and bulk_force
1114    o Steph gchem various cleanups
1115    
1116    checkpoint 51h_pre
1117    o fixed some single quotes
1118    o modify gchem pkg to be more versatile
1119    o modifications to clean up dic pkg
1120    o add pkg/cfc
1121    
1122    checkpoint51g_post
1123    o provide links for ARPACK and ADM*TLM
1124    o start removing verification/vero/
1125    o update AD-related stuff
1126      (in particular some IF-statements in model/src/ routines)
1127    o adding to verification/global_ocean.90x40x15/ adjoint of
1128      vector invariant setup
1129    
1130    checkpoint51f_post
1131    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1132    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1133      of tracer Green's fucntions for ocean inversion project.
1134    
1135    checkpoint51f_pre
1136    o Added on-the-fly spatial interpolation capability
1137        "USE_EXF_INTERPOLATION" to pkg/exf.
1138      - This is a temporary Cartesian-grid hack until
1139        the super-duper ESMF coupler becomes available.
1140      - See verification/global_with_exf/README for usage example.
1141      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1142        flags and modified pkg/seaice accordingly.
1143    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1144        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1145        non-local transport term.
1146    
1147    checkpoint51e_post
1148    o pkg/mom_vecinv:
1149      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1150      - add time-ave diagnostic of vorticity advection.
1151    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1152    o atmospheric geopotential: - include water vapor effect;
1153                                - use p^kappa in p* scaling.
1154    o land pkg: read initial state from files.
1155    o AIM : add stratospheric drag in the upper level
1156    
1157    checkpoint51d_post
1158    o change function ILNBLNK (=> last non-blank char.) to return zero
1159      (instead of the string length) when the string. char is empty
1160    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1161    o modif's to restore TAMC compatibility
1162      - avoid "_d" constructs in PARAMETER declarations
1163      - avoid interrupting lines by comment lines
1164    o Use cluster local disks for purely local I/O
1165      vs. globally visible disks needed for ctrl stuff
1166      (merged from ecco-branch)
1167      - new active_file_loc... and mdsio_..._loc routines
1168      - affected packages: autodiff, ctrl, grdchk, mdsio
1169    
1170    checkpoint51c_post
1171    o introducing integer flag debugLevel
1172      - debLevZero: suppress all output
1173      - debLevA: standard
1174      - debLevB: equivalent to current debugMode=.TRUE.
1175    o introducing pathname variable mdsioLocalDir for mdsio
1176      that can be specified at runtime
1177      (relevant for cluster I/O to local disk)
1178    `
1179    >>>checkpoint51b_post
1180    adjoint of ptracers
1181    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1182    o extended state in checkpoint_lev?, etc.
1183    o alternative ctrl/cost with tr1 or ptracer
1184    o new comlev1_bibj_ptracers
1185    o new ptracers.flow
1186    o made ptracers_forcing same as external_forcing_s
1187    o added verification for adjoint with ptracers
1188      - adm. grdchk fail so far
1189      - tlm. grdchk OK
1190      - checked tapelev/comlev recomputations: OK
1191    <<<checkpoint51b_pre
1192    
1193    checkpoint51a_post
1194    o added code for biogeochemistry package
1195      - new pkgs: dic, gchem
1196      - new subroutine in ptracers
1197    o modify code for biogeo packages
1198      - in model/src and pkg/ptracers
1199    
1200    checkpoint51
1201    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1202      - autodiff, ctrl, exf, grdchk, seaice
1203      kept separate packages
1204      - cost, ecco, obcs
1205    o updating verification/internal_wave, verification/lab_sea
1206      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1207    
1208    checkpoint50i_post
1209    o Preparing next differentiable checkpoint and sync
1210      of MAIN vs. ecco-branch
1211      - 1st step: this one is differentiable
1212      - 2nd step: next(! not this) checkpoint will have updated packages
1213                  from ecco-branch)
1214    
1215    checkpoint50h_post
1216    o new package "land": provide surface BC for AIM.
1217    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1218    o AIM: use true log-P extrapolation for near surface temp (= as in
1219        F.Molteni paper) ; update aim.5l_cs output.
1220    o New variable in PARM03 for more flexible pickups
1221    o somewhat cleaned package initialisation sequence for
1222      ctrl/ cost/ ecco/ in packages_... routines
1223    
1224    checkpoint50g_post
1225    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1226      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1227      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1228        made the default because of faster convergence than ADI
1229    
1230    checkpoint50f_post
1231    o exf totally restructured
1232      - replaced all exf_set_ routines by one generic exf_set_gen.F
1233        and made sure it's still differentiable
1234      - split exf_getffields.F into new exf_bulkformulae.F
1235      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1236      - updated adjoint/makefile and relevant verif. accordingly
1237    
1238    checkpoint50f_pre
1239     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1240          + change Evap over land. (update aim.5l_cs output)
1241     o added missing .cvsignores and made uniform across expts
1242     o changed configuration of tidal_basin_2d expt
1243     o added pkg/debug functions for tracing code in fatal crashes
1244     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1245     o new fn in pkg/monitor to stop model if solution grows too big
1246     o removed lots of single quotes from comments
1247    
1248    checkpoint50e_post
1249    o make KPP work with PTRACERS
1250     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1251       nearly a copy of kpp_transport_s
1252     - there is no analogue to SurfaceTendencyS, so I have to use
1253       gPtr(of the surface layer) instead
1254    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1255    checkpoint50e_pre
1256    
1257    checkpoint50d_post
1258    o change kpp output from multiple-record state files to single-record state
1259      files analogous to write_state.F
1260    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1261      analogous to the cg2d-related output.
1262    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1263      so that writing to internal file fn (with length 512) fails.
1264    checkpoint50d_pre
1265    
1266    checkpoint50c_post
1267    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1268    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1269    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1270    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1271    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1272    
1273    checkpoint50c_pre
1274    Merging from release1_p13:
1275    o bug fix for pkg/seaice dynamic solver
1276    o Added SEAICE_initialHEFF to pkg/seaice
1277    
1278    checkpoint50b_post
1279    o store u*,v* in gU,V instead of in guNm1,gvNm1
1280    o in order to put the momForcing out of the Adams-Bashforth:
1281      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1282      to timestep.F
1283    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1284    o re-generate output for highly sensitive test-exp:
1285       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1286    
1287    checkpoint50b_pre
1288    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1289    o corrected CPP option mismatch in exf_Bulk... functions for case
1290      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1291    
1292    checkpoint50a_post
1293    o Bug fix for merging between c50 and KPP.
1294      ikey was passed from thermodynamics to kpp_calc via
1295      common block rather than being recomputed in kpp_calc,
1296      in contradiction with new key itdkey.
1297      New key ikppkey created, and tamc.h headers updated.
1298    
1299    checkpoint50
1300    - 2nd step of merge with ecco-branch:
1301      merge changes in ecco-branch back into main trunk
1302    - bug fix in find_alpha
1303    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1304    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1305    - merged some sliced AD support routines
1306    
1307    checkpoint49
1308    merged from ecco-branch:
1309    o exf:
1310      - Enable initialisation of forcing fields to constant
1311        (runtime) values.
1312      - in exf_getffields.F
1313        Reduce i-/j-loop to interior domain, discarding overlaps.
1314        That also fixes wrong TAF-key computations for key_1, key_2
1315        with bulf formulae.
1316      - exf_init.F modify #ifdef for exf_init_evap
1317      - exf_getffieldrec.F, ctrl_getrec.F
1318        The following INT-usages are not safe:
1319          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1320          fldcount = int(fldsecs/fldperiod) + 1
1321        and were modified.
1322    o autodiff: checkpoint_lev...
1323      - updated storing for bulk formulae (some arrays were missing)
1324      - added state for seaice package
1325      - synchronized with main branch
1326    o DIVA:
1327      Modif.s in
1328      - the_main_loop.F
1329      - the_model_main.F
1330      and added cost_final_restore.F cost_final_store.F
1331      o With these changes, it is possible to fully separate
1332        the first forward run to compute the cost function (mdthe_main_loop)
1333        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1334        into separate model executions.
1335        This enables better tuning of DIVA to given queue sizes.
1336      o Loss of cost function value in consecutive DIVA runs is
1337        fixed by storing to 'costfinal' file.
1338      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1339        beginning/end of adjoint integration is accounted for.
1340      The current changes apply to TAF-1.4.26.
1341      TAF has one remaining bug, requiring one manual change
1342      (see MITgcm manual).
1343    o cal: synchronized between MAIN and ecco-branch
1344    
1345    checkpoint48i_post
1346    o Changes to restore differentiability of code w.r.t. previous tag
1347      (mostly adding new routines to make list and replacing
1348      pressure by totPhiHyd).
1349    o Updated and merged grdchk package
1350      - has both ADM and TLM checks
1351      - works for single- and multi-proc.
1352      - output cleaned
1353      - worked successfully for parallel DIVA
1354    o genmake:
1355      - Adding -platform=SP4
1356      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1357    o Modif. for DIVA:
1358      ctrl_unpack should not be called in intermediate DIVA interval.
1359      (similar thing would apply for active files such as
1360      tbar, sbar, psbar, which should not be reinitialised;
1361      only relevant for ecco-branch)
1362    
1363    checkpoint48h_post
1364    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1365    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1366    o Added SEAICE_initialHEFF to pkg/seaice
1367    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1368    
1369    checkpoint48g_post
1370    --- EOS:
1371    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1372      store total Potential in totPhyHyd for diagnostics & EOS.
1373    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1374    --- Pressure/geopotential gradient:
1375    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1376    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1377      ( changes results of global_ocean_pressure )
1378    o NLFS + z-coord.: add eta*Rho' contribution.
1379    o accurate phiHyd when using interface-W at the middle between 2 centers
1380     ( changes results of ideal_2D_oce )
1381    o includes r* 2nd term in potential gradient.
1382    
1383    checkpoint48f_post
1384    Merging from release1_p12:
1385    o Modifications for using pkg/exf with pkg/seaice
1386      - improved description of the various forcing configurations
1387      - added basic radiation bulk formulae to pkg/exf
1388      - units/sign fix for evap computation in exf_getffields.F
1389      - updated verification/global_with_exf/results/output.txt
1390    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1391      (SBO) core products, including oceanic mass, center-of-mass,
1392      angular, and bottom pressure (see pkg/sbo/README.sbo).
1393    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1394      to avoid negative values in shallow regions.
1395      - updated verification/natl_box/results/output.txt
1396      - updated verification/lab_sea/results/output.txt
1397    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1398    o Added useSingleCpuIO option (see PARAMS.h).
1399    o Updated useSingleCpuIO option in mdsio_writefield.F to
1400      work with multi-field files, e.g., for single-file pickup.
1401    o pkg/seaice:
1402      - bug fix in growth.F: QNET for no shortwave case
1403      - added HeffFile for specifying initial sea-ice thickness
1404      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1405    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1406      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1407    o pkg/seaice:
1408      - adjoint-friendly modifications
1409      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1410    
1411    checkpoint48e_post
1412    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1413    o dynamics: change definition of computational domain & adapt mom_fluxform
1414      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1415    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1416        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1417        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1418        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1419        inverted_barometer solid-body.cs-32x32x1
1420      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1421    
1422    checkpoint48d_post
1423    o in preparation for r*:
1424     a) use pre-computed gradient of hydrostatic potential:
1425        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1426     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1427        => affects results of glob_oce_pressure (different truncation error)  
1428      update output.txt of ideal_2D_oce & global_ocean_pressure
1429    
1430    checkpoint48d_pre
1431    o in preparation for r*:
1432      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1433      pass the 2 comp. of the grad. as arguments to momentum S/R.
1434      but for the moment, only used if it does not change the results.
1435    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1436    
1437    checkpoint48c_post
1438    Modifications in treatment of initial flux forcing controls
1439    to avoid extra storing of flux fields.
1440    
1441    checkpoint48c_pre
1442    o Added tidal_basin_2d experiment (currently 1D!)
1443    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1444    
1445    checkpoint48b_post
1446    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1447     (modification to pressure gradient not yet implemented)
1448    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1449      (for U & V) that are used for vertical advection of momentum.
1450    
1451    checkpoint48a_post
1452    o In preparation for r*, use temp. array to compute vertical transport
1453       in flux-form momentum pkg. => change results of few test-exp.
1454      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1455                        lab_sea, natl_box & plume_on_slope
1456    
1457    checkpoint48
1458    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1459    
1460    checkpoint47j_post
1461    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1462    o moved adexch from forward_step to addummy_in_stepping
1463    o added exch in ctrl_map_...
1464    o aveFreq.=0. at end of cost_final to avoid overwrite in
1465      reverse checkpointing loop
1466    o Yet more changes in gmredi:
1467      * adgmredi_calc_tensor
1468        avoiding all recomputation of gmredi_slope_limit
1469      * adgmredi_x/y/rtransport
1470        added flag for excessive storing to avoid recomp. of
1471        u/v/rtans, dTdx/y/z
1472        -> this is not really necessary and very memory-consuming
1473      * adgmredi_slope_psi:
1474        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1475      * gmredi_slope_limit
1476        re-activated full calculation of taperfct for case 'ac02'
1477    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1478    
1479    checkpoint47i_post
1480    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1481    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1482      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1483    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1484    o gmredi: fix few bugs.
1485    
1486    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1487    This will be a good checkpoint to plug into the ecco-branch.
1488    o few modif.'s to get latest version adjointed
1489      (mainly kick out code in ini_linear_phisurf)
1490    o modif's to run adjoint with exactConserv
1491    o case GM_BOLUS_ADVEC should be cleaned
1492      S/R gmredi_slope_psi should be cleaned
1493    o verification/carbon now has exactConserv=.TRUE.
1494    
1495    checkpoint47g_post
1496    o time-average AIM output: becomes independent from statvars time-average
1497      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1498    o After TAF bug fix:
1499      Tested adjoint of gmredi package.
1500      Tests were done with checkpoint47 rather than with latest
1501      checkpoint47f_post since the latter is broken for the adjoint
1502      verification/carbon/ contains both ADM and TLM gradient checks.
1503    Here they are, before they get changed/lost/stolen.
1504    Mostly modif.'s to fix numerical sensitivities.
1505    Gradient checks OK for
1506    - GM_taper_scheme:
1507      * clipping
1508      * ac02
1509      * linear
1510      * glw91
1511      * dm95
1512      * ldd97
1513    - GMREDI_OPTIONS:
1514      * GM_VISBECK_VARIABLE_K
1515      * GM_NON_UNITY_DIAGONAL
1516      * GM_EXTRA_DIAGONAL
1517      * GM_BOLUS_ADVEC
1518    in conjunction with data.gmredi parameters to be checked in
1519    in a few minutes under verification/carbon/code/
1520    
1521    checkpoint47f_post
1522    Merging from release1_p10:
1523    o modifications for using pkg/exf with pkg/seaice
1524      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1525        and SEAICE_EXTERNAL_FLUXES
1526      - pkg/exf CPP options EXF_READ_EVAP and
1527        EXF_NO_BULK_COMPUTATIONS
1528      - usage examples are Experiments 8 and 9 in
1529        verification/lab_sea/README
1530      - verification/lab_sea default experiment now uses
1531        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1532    
1533    checkpoint47e_post
1534    o created a tag prior to creating a branch
1535    
1536    checkpoint47d_post
1537    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1538      at the bottom boundary had an erroneous half slip boundary condition
1539    o added bottom drag and no slip boundary condition capabilities to
1540      oceanic pressure coordinates code
1541    o added new verification experiment global_ocean_pressure, this experiment is
1542      also described in the tutorial section of the manual
1543    checkpoint47d_pre
1544    
1545    checkpoint47c_post
1546    o Added a verification experiment for a global cubed-sphere ocean run
1547      -  verification/global_ocean.cubed32x32x30
1548      -  uses pkg/therm_seaice and pkg/bulk_forcing
1549    
1550    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1551    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1552      when using P-coordinate; only implemented for atmospheric config.
1553    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1554      NOTES: requires option NONLIN_FRSURF to be "#define".
1555    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1556    
1557    checkpoint47b_post
1558    Merging from release1_p9:
1559    o pkg/seaice
1560      - removed GOTO's and added taf directives
1561      - double precision constants to reduce the g77 (Linux)
1562        to F77 (SGI) differences reported in release1_p8
1563    o tools/genmake
1564      - added SGI options
1565    o verification/testscript
1566      - updated to that of checkpoint47a_post
1567    o verification/global_ocean.90x40x15/input/eedata
1568      - modified for SGI f77 compatibility
1569    o verification/lab_sea
1570      - added description of sea-ice model
1571      - added missing matlab routines
1572      - added test of thermodynamics parallelization
1573    
1574    checkpoint47a_post
1575    o new pkg: aim_v23
1576     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1577       for now, keep the same surface forcing as before.
1578     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1579     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1580     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1581    o add diagnostic of surface correction term in monitor output
1582    
1583    o bulk_force and therm_seaice
1584    - Two packages:  bulk_force (Bulk forcing)
1585      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1586    - Earlier integration from Stephaine Dutkiewicz
1587      and Patrick Heimbach.
1588    - Two ifdef statements for compile time,
1589       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1590    
1591    checkpoint47
1592    differentiable version of checkpoint46n_post
1593    o bug fix in quasihydrostaticterms
1594    o * "clean" adjoint code (in terms of extensive recomputations)
1595        can now be obtained for all GMREDI options (i.e. for
1596        - GM_VISBECK_VARIABLE_K
1597        - GM_NON_UNITY_DIAGONAL
1598        - GM_EXTRA_DIAGONAL
1599        - GM_BOLUS_ADVEC )
1600      * However, wrong gradient check problem remains unsolved.
1601      * New CPP options have been introduced for different
1602        tapering schemes
1603    o external_fields_load now part of differentiation list
1604    o pressure needs multiple storing;
1605      would be nice to have store_pressure at beginning or
1606      end of forward_step, e.g. by having phiHyd global (5-dim.)
1607      (NB: pressure is needed for certain cases in find_rho,
1608      which is also invoked through convective_adjustment).
1609    o recomputations in find_rho for cases
1610     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1611    o #define ATMOSPHERIC_LOADING should be differentiable
1612    o ini_forcing shifted to begining of initialise_varia
1613    o Incorporating QNVS line search routines into MITgcm
1614      (this is separate code, and therefore not under pkg)
1615      lsopt/, optim/
1616    o Updated verification/carbon/
1617      - #define GM_VISBECK_VARIABLE_K
1618      - GM_taper_scheme    = 'ldd97'    
1619    
1620    checkpoint46n_post
1621    Merging from release1_p8:
1622    o verification/natl_box:
1623      updating new external_fields_load routine
1624    o New package: pkg/seaice
1625      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1626      The sea-ice code is based on Hibler (1979-1980).
1627      Two sea-ice dynamic solvers, ADI and LSR, are included.
1628      In addition to computing prognostic sea-ice variables and diagnosing
1629      the forcing/external data fields that drive the ocean model,
1630      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1631      The implied surface heat flux is then stored in variable
1632      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1633      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1634      non-local transport term.  Because this call precedes model
1635      thermodynamics, temperature under sea-ice may not be "exactly" at
1636      the freezing point by the time theta is dumped or time-averaged.
1637      N.B.: fairly large differences in accuracy occur across
1638            different platforms/compilers; comparison between
1639            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1640            generated output gives:
1641       T           S           U           V
1642      C D M    c        m  s        m  s        m  s        m  s
1643      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1644      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1645      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1646    
1647      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1648    o GAD:
1649      - generated new common blocks to account for call of
1650        same gad routines with differing traceridentities
1651        (needed to modify tracerIdentity indices in GAD.h)
1652      - generated separate common blocks for case useCubedSphereExchange
1653        (Department of Futurology)
1654      - parameter lists to gmredi_?transport: added tracerIdentity
1655      - added new key indices to tamc.h
1656    o external_fields_load:
1657      - added this routine to TAF list
1658      - needed to make some common blocks global and additional storing
1659        along the same lines as exf package (checkpoint_lev?_directives.h)
1660    o exf:
1661      updated external forcing package
1662      - bug fixes carried over from ecco-branch
1663        (missing OBCS_OPTIONS.h in two routines)
1664      - enable easy to use "no forcing".
1665      - added exf I/O for atmospheric loading
1666      - added exf I/O for runoff data
1667      - transfered scaling between exf <-> MITgcm to exf namelist
1668    o Adding new verification experiment global_with_exf.
1669      This verification experiment is almost identical to the
1670      global_ocean.90x40x15 experiment, except that it uses
1671      the exf (and cal) package instead of the
1672      external_fields_load routine (cf README file).
1673    
1674    checkpoint46m_post
1675    o modified testscript to return -- when there are no lines of "%MON" output
1676    o added new flag "quasiHydrostatic" for QH mode
1677      and new routine quasihydrostaticterms()
1678    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1679      New routine: mom_u_coriolis_nh()
1680    o fixed sign of non-hydrostatic metric terms in u and v equations.
1681      Depend on correct sign of gravitySign.
1682    o added work.pc* to .cvsignore in aim directories using ifc
1683    o introduced flag for controllin non-hydrostatic metric terms
1684    o removed gravitySign from PARM04
1685    o switched to g77/ifc from pgf77 in aim experiments
1686    
1687    checkpoint46l_post
1688    o made convective adjustment work with pressure coordinates:
1689     - changed the direction of k-loop in convective_adjustment.F for the
1690       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1691     - adjusted the reference pressure k-index in convective_adjustment.F
1692     - adjusted the convection condition in convect.F (in analogy to
1693       calc_ivdc.F)
1694     - convective_adjustment no longer computes anything on the halos
1695     - removed the warnings about negative salinity from find_rho.F and
1696       find_alpha.F; instead the new routine look_for_neg_salinity, called
1697       at the beginning of find_rho, find_alpha, and find_beta, does a
1698       check of the entire slice, if CPP-option
1699       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1700    checkpoint46l_pre
1701    
1702    checkpoint46k_post
1703    o fixed the verification/global_ocean.90x40x15 experiment:
1704     - new bathymetry (the world according to A., JMC, and M.)
1705     - new initial fields and forcing fields (*.bin files)
1706     - new POLY3.COEFFS (for the next release one should switch to a full
1707       equation of state: JMD95P or MDJWF)
1708     - fixed several errors and redundancies in the data file
1709     - experiment uses looped cells
1710     - added matlab directory with diagnostic scripts for plotting of output
1711    
1712    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1713     - read AIM physics parameters from a file (data.aimphys)
1714     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1715    
1716    checkpoint46j_post
1717    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1718    o move wVel computation at the end of the time step, in S/R integr_continuity
1719    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1720    o update timeave pkg for wVel diagnostic.
1721    checkpoint46j_pre
1722    
1723    checkpoint46i_post
1724    o Clean up AIM package (and keep the results unchanged):
1725      include CPP_OPTION and use IMPLICT NONE in all routines ;
1726      declare all the variables _RL ; use _d 0 for all numerical constants.
1727      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1728    
1729    checkpoint46h_post
1730    o cleaned up the use of rhoNil and rhoConst.
1731      - rhoNil should only appear in the LINEAR equation of state, everywhere
1732        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1733        and the dynamical equations are all divided by rhoConst
1734    o introduced new parameter rhoConstFresh, a reference density of fresh
1735      water, to remove the fresh water flux's dependence on rhoNil. The default
1736      value is 999.8 kg/m^3
1737    o cleanup up external_forcing.F and external_forcing_surf.F
1738      - can now be used by both OCEANIC and OCEANICP
1739    checkpoint46h_pre
1740    
1741     Added code to convert surface volume flux (fresh water) into
1742     a mass flux when using P coordinates in the ocean (OCEANICP).
1743     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1744    
1745    checkpoint46g_post
1746    o Include a new diagnostic variable phiHydLow for the ocean model
1747      - in z-coordinates, it is the bottom pressure anomaly
1748      - in p-coordinates, it is the sea surface elevation
1749      - in both cases, these variable have global drift, reflecting the mass
1750        drift in z-coordinates and the volume drift in p-coordinates
1751      - included time averaging for phiHydLow, be aware of the drift!
1752    o depth-dependent computation of Bo_surf for pressure coordinates
1753      in the ocean (buoyancyRelation='OCEANICP')
1754      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1755        Theta, Salinity, and Pressure in the parameter list. This routine is
1756        presently contained in find_rho.F. This routine does not give the
1757        correct density for 'POLY3', which would be a z-dependent reference
1758        density.
1759    o cleaned up find_rho
1760      - removed obsolete 'eqn' from the parameter list.
1761    o added two new verification experiments: gop and goz
1762      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1763    checkpoint46g_pre
1764    
1765    checkpoint46f_post
1766    o Enable tangent linear (forward mode) gradient checks:
1767      - extended active file handling to g_... files
1768      - added TANGENT_SIMULATION to theSimulationMode
1769      - extended grdchk package accordingly
1770    o added tangent linear setup in verification/carbon/code_ftl
1771    o added adjoint setup in verification/front_relax/code_ad
1772    
1773    checkpoint46e_post
1774    o Added new equation of state -> MDJWF
1775      - EOS of McDougall et al., 2002, JAOT, submitted
1776      - caveat: the equation of state is only valid for a smaller (more
1777        realistic?) range of values than JMD95P/Z and UNESCO
1778      - added masks to the calculation of pressure in store_pressure
1779      - added more check values for density in check_eos (ini_eos.F), some of
1780        the old check values are out of the range of the MDJWF-eos, so don't
1781        expect perfect matches for those
1782    checkpoint46e_pre
1783    
1784    checkpoint46d_post
1785    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1786      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1787      case of pressure coordinates. eosType='JMD95Z' in
1788      combination with buoyancyRelation='OCEANICP' now causes an error.
1789    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1790      in find_alpha/beta.
1791    checkpoint46d_pre
1792    
1793    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1794      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1795    
1796    checkpoint46c_post
1797    o Changes necessary for ocean in p-coordinates
1798     -  Added new buoyancy relation = 'OCEANICP'
1799     -  Added new parameters = gravitySign (this used to be contained inside
1800        the factor dRdZ which I added when we first switched to R coordinates).
1801     X GM/Redi is not compatible (yet)
1802     X bottom drag and no-slip need to be debugged.
1803    checkpoint46c_pre
1804    
1805    checkpoint46b_post
1806    o Added new equation of state -> JMD95Z and JMD95P
1807      - EOS of Jackett and McDougall, 1995, JAOT
1808      - moved all EOS parameters into EOS.h
1809      - new routines ini_eos.F, store_pressure.F
1810    o Added UNESCO EOS, but not recommended because it requires
1811      in-situ temperature (see JMD95)
1812    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1813      unesco.f to be used with POLY3
1814    checkpoint46b_pre
1815    
1816    checkpoint46a_post
1817    o Added (atmospheric) pressure loading
1818      - new field in FFIELDS.h, etc...
1819      - new cpp flag ATMOSPHERIC_LOADING
1820    o Changed hFacC to _hFacC in calc_phi_hyd.F
1821    o Added SHORTWAVE_HEATING to some files for consistency
1822    checkpoint46a_pre
1823    
1824    checkpoint46
1825    further merges from release1_p5
1826    o new ctrl package
1827      - adopted from ECCO environment to enable optimization
1828      - added Eliassen Palm fluxes to controls
1829    o added Eliassen Palm flux controls to gradient check package
1830    o cost package
1831      - Compatible with new ctrl package
1832      - added Eliassen Palm cost hooks
1833      - modif's of existing cost functions
1834    o Adjoint-related bug fixes in kpp:
1835      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1836      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1837    o autodiff package
1838      - flow directives:
1839        + new for S/R do_the_model_io
1840        + enhanced for S/R checkpoint
1841        + new gmredi.flow
1842      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1843        disable adcommon.h/g_common.h by default.
1844      - fixed problem for adjoint of global_max
1845    o modified verification/carbon/
1846    o New setup for adjoint of global_ocean
1847    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1848    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1849    o incorporated hooks for sponge layer code (external_forcing.F)
1850    
1851    checkpoint45d_post
1852    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1853    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1854      (affects plume_on_slope "cg2d" output)
1855    o add new parameter deltaTfreesurf for free-surface time stepping
1856    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1857    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1858    o change phiMin in exp1 (to agree with documentation)
1859    o add new flags:
1860     - T,S forcing inside/outside Adams-Bashforth
1861     - turn off temp,salt advection and/or forcing
1862     - for each tracer, define internal flag for multiDimAdvection & A-B
1863    o monitor: change definition of KE to check conservation of Energy
1864    
1865    checkpoint45c_post
1866    o Removed f90 comments ("!")
1867    o Modified initialisations to enable exf package for MITgcm
1868      (without invoking ECCO_PACKAGE).
1869    o modifications to gradient check package (Martin Losch)
1870      - enable centered differences
1871      - modified format of standard output
1872    
1873    checkpoint45b_post
1874    o cleaned exchange calls in cg2d
1875    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1876    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1877      to configure barotropic setup (Martin Losch)
1878    o moved some initialisations within bi,bj loop in dynamics
1879      (TAF flow dependency)
1880    o in initialise_varia, moved call packages_init_variables
1881      before convective_adjustment_init
1882      (corresponding adjustment of TAF tape initialisation).
1883    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1884    
1885    checkpoint45a_post
1886    o compute Rho over the whole domain (extend iMin,jMin indices)
1887    o specific exchange for X-slice domain (case Ny=1)
1888    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1889    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1890    
1891    checkpoint44h_post = checkpoint45
1892    o Fix to restore differentiability:
1893      place at which packages_init_variables is called in
1894      initialise_varia is crucial for reverse control flow.
1895    o modifications in GMRedi to enable stable adjoint
1896      (corresponding modif's in thermodynamics, dynamics)
1897    o added missing hook for sponge layer code in external_forcing
1898    o modified test cost functions
1899    o storing in gad_advection (plus removal of write(0,*)!
1900    o missing headers TR1.h added in convective_adjustment routines
1901    o errorMessageUnit set non-equal zero in eeboot
1902      (conflict on some platforms, e.g. IBM SP3)
1903    o modified carbon verif.
1904    
1905    checkpoint44h_pre
1906    o vertical grid option: allow to put the Interface at the middle between
1907      2 cell-centers ; replace delZ in pkg/kpp by drF.
1908    o GM Advective form: Tracers are advected using the residual transport (=
1909      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1910    
1911    checkpoint44g_post
1912    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1913      results) ; ifdef missing in thermodynamics.F
1914    
1915    checkpoint44f_pre,checkpoint44f_post
1916    o added PTRACERS package
1917      This allows an arbitrary number of passive tracers to be integrated
1918      forward simultaneously with the dynamicaly model.
1919      + Implemented so far:
1920        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1921        - I/O and checkpointing
1922        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1923      + Not implemented so far:
1924        - KPP
1925        - OBCS
1926      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1927        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1928        line in data.pkg.
1929      + This package is disabled by default since it increases storage.
1930    
1931    
1932    o testscript: added -cleanup option
1933    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1934                 b) enable to filter 2D fields.
1935    
1936    checkpoint44e_pre,post
1937    o re-wrote convective adjustment to use pre-calculated weights
1938      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1939      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1940      Original calls to convect() still in place.
1941    
1942    chkpt44d_pre,post
1943    o added missing EXCLUDE_MONITOR flags
1944    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1945      (incompatible typ in MIN/MAX expressions caused problems
1946      on IBM SP3)
1947    o in genmake added variable MAKEDEPEND
1948      plus resetting for case SunOS
1949    o added timer_stats.c routine for IBM SP3
1950    o removed variables in dynamics
1951    !!! I forgot to create tag chkpt44d_pre !!!
1952    !!! But chkpt44d_pre = chkpt44c_post    !!!
1953    
1954    o real fresh water flux implemented with non-linear free-surface.
1955    
1956    chkpt44c_pre,post
1957    o few fix (mask in shap_s2, EmPmR in external_field_load,
1958      USE_NATURAL_BCS in solve_for_P);
1959    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1960    
1961    checkpoint44b_pre/_post
1962    o merge of relevant stuff from the ecco-branch:
1963      - genmake: removed $S64 overwrite for case SunOS
1964      - pkg/exf: update and corrections for field swapping and obcs
1965      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1966                  harmonized between ECCO and MITgcm
1967      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1968                      updated checkpointing_lev... lists for obcs
1969      - model/src: minor changes in forward_step, plot_field
1970                   added directive for divided adjoint in the_main_loop
1971      - pkg/mdsio: added mdsio_gl_slice
1972    
1973    o check parameters & config (chkpt44a_pre,post)
1974    o OBC and NonLin_FrSurf.
1975    
1976    checkpoint44
1977    o fix bug in mom_vi_del2uv
1978    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1979    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1980    o update AIM experiments (NCEP input files)
1981    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1982    o added some stuff for AD
1983    
1984    checkpoint43
1985    o added two new advection tests
1986    o added global 4x4 degree ocean test
1987    o added test of H&S94 with free surface on cube
1988    o some final mods for gradient check, adjoint,...
1989    
1990    checkpoint42
1991      Fixed AD-related problems:
1992    o Store directives up-to-date with re-arranged Adams-Bashforth
1993      (mainly thermodynamics.F)
1994    o New store directives for multi-dim. advection schemes
1995      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1996      * new common block and key passkey
1997      (mainly gad_advection.F)
1998    o Modified store directives for split of dynamics/thermodynamics
1999      for the case ALLOW_KPP
2000    o Cleaned argument list for timestep_tracer.F
2001    
2002    checkpoint41
2003    o re-formatted/added comments in prologues of key subroutines
2004      to work with protex
2005    
2006    checkpoint40
2007    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2008    o added FLT (floats) package from Arne along with demo. experiment
2009    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2010      implementation of forward-in-time forcing terms
2011    o more mods for non-linear free-surface including new variable
2012    o modified multi-dim method to work on cube
2013    o bug fix in KPP (from DM)
2014    
2015    checkpoint40pre9
2016    o added DST advection schemes
2017    o fix MPI bug on SGI's
2018    o modifications for non-linear free-surface
2019    o fixed conditionals for fixed flow/passive tracer only mode
2020    o added tension/strain form of stress tensor
2021    o changes to commenting of arguments for TAF/TAMC
2022    o added/updated many matlab scripts
2023    o added multi-dimensional advection method for tracers
2024      
2025    checkpoint40pre8
2026    o new package rw/
2027      Added method for dumping intermediate local arrays:
2028      mdsio_writetile - same as mdsio_writefield except works from inside
2029                        bi,bj loop
2030      mdsio_writelocal - same as mdsio_writetile except works for local
2031                         arrays
2032      write_local_r? - higher-level wrapper for mdsio_writelocal
2033      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2034      Example given at end of mom_vecinv.F that dumps some local arrays.
2035    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2036      control flux-form versus vector invariant code.
2037      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2038      or genmake -DISABLE ...
2039    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2040      (additional storing is now needed for case vecinv;
2041      currently nothing implemented to switch this storing off
2042      in case fluxform is used since no CPP flag available).
2043    
2044    checkpoint40pre7
2045    o bug fix in dynamics.F
2046      calc_viscosity called before k=1,Nr loop.
2047    o added some #ifdef's ALLOW_PASSIVE_TRACER
2048    o cleaned initialisations in ctrl_map_ini
2049      related to TAF
2050    
2051    checkpoint40pre6
2052    o split dynamics into thermodynamics & dynamics
2053    o corresponding split of calc_diffusivity into
2054      calc_diffusivity, calc_viscosity
2055      (kpp_calc_diff, kpp_calc_visc).
2056    o Added diffkr, kapgm to control variables
2057    o bug fix in gmredi_slope_limit for ldd97
2058    
2059    checkpoint40pre5
2060    o proper initialization of Adams-Bashforth time stepping
2061      + uses forward step for very first step of model (iter=0)
2062    o re-generated *all* output since almost all output is modified by this
2063      change (sorry but we've been putting this one off for about 2 years)
2064      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2065        *not* regenerated since they are already out of date and I don't
2066        want to create the impression that they are suddenly working.
2067    o removed KAP stuff for DEC's
2068    o modified/added many .cvsignore files in */code and */input
2069    o added new expt "solid-body.cs-32x32x1"
2070      + this uses an alternative form of ini_curvilinear_grid.F which
2071        is not necessarily any better than the current one...
2072    
2073    checkpoint40pre4
2074    o added re-initialisations of utrans,vtrans,rtrans in
2075      calc_common_factors which are crucial for TAF.
2076    o extended iMin,jMin range for calc_common_factors,
2077      calc_diffusivity
2078    o added option ALLOW_PASSIVE_TRACER
2079    o a few minor updates and fixes
2080    
2081    checkpoint40pre3
2082    o created calc_gtr1.F for gad package
2083    o split the_main_loop and re-introduced forward_step
2084    o some recomputations of nIter0 for TAMC
2085    
2086    checkpoint40pre2
2087    o Updated to latest branch of AJA, JMC
2088    o Added gradient check package
2089    o Added routines for passive tracer handling
2090    o Added carbon sequestration sensitivity experiment
2091    
2092    checkpoint39
2093     o Modifications and fixes to support TAMC
2094       (mainly missing or wrong directives)
2095     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2096       in addummy_in_stepping
2097     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2098     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2099     o Included following packages:
2100       cal: calendar
2101       exf: external forcing
2102       ecco: essential routines to control use of cal, exf
2103             (NB: this is not the full ECCO environment)
2104     o disabled some packages by default in genmake
2105    
2106    checkpoint38
2107     o see notes_c37_adj.txt
2108     o corrected wrong layer index in external_forcing_t
2109     o replaced the_main_loop/forward_step by the_main_loop
2110     o removed forceoutput from write_state
2111       (replaced criteria for initial/final state)
2112     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2113    
2114    checkpoint37
2115     o mdsio.F routine split and packaged in pkg/mdsio
2116       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2117        used unless genmake -disable=mdsio)
2118     o allow a more precise surface-geopotential gradient for the atmosphere
2119       taking into account the change in space of Alpha (=1/rho) at the surface.
2120     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2121       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2122     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2123       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2124       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2125     o Time-Average diagnostics defined as a pseudo package "timeave".
2126     o pickup files : old pickup (before c35) did not work with new code (c35
2127       and after) unless activating 2 commented lines in initialise-varia.
2128     o Non-Hydrostatic pickup file Pb fixed.
2129     o bug with Rigid-lid version (since c35) fixed.  
2130    
2131    checkpoint36
2132     o implement Crank-Nickelson barotropic time-stepping
2133     o recover Time-Average diagnostics
2134     o fix Pb in checkpoint (PR#19)
2135     o AIM become a standard package ; clean unused CPP_kees
2136    
2137    checkpoint35
2138     o subtantial rewrite of dynamics.f
2139     o allows staggered time-stepping
2140     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2141     o added bottom drag (linear + quadratic)
2142    
2143    checkpoint34
2144     o Modified exchange routines for correct reverse simulation.
2145     o Added verification output to comply with bug fix in impldiff.F
2146       as of c33 (exp2, natl_box).
2147     o Corrected store directives in dynamics.F
2148     o Corrected array boundaries in impldiff.F
2149     o Corrected array dimensions in gmredi.
2150       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2151     o Added routine GLOBAL_SUM_INT to global_sum.F
2152     o Added mdsio_gl.F for ECCO purposes.
2153    
2154  checkpoint33  checkpoint33
2155   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
2156   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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