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revision 1.82 by mlosch, Mon Aug 19 14:21:30 2002 UTC revision 1.496 by jmc, Thu Jun 9 17:51:34 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 momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
8      add 1rst Order upwind vertical Shear.
9    o add a quick fix for A/B checkpointing in OFFLINE mode
10    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
11      end-run around the C/Fortran linking horror in eesup/src/timers.F
12    o added pkg/runclock: allows user to terminate run based on wall clock
13    o added non-hydrostatic scaling parameter: nh_am2
14    o pkg/my82: futile attempt to make results compiler-independent by adding
15      some "_d 0", etc. no effect.
16    o for mnc output, fill the 'T' coordinate var with myTime and create a
17      separate 'iter' variable for iteration count
18    o pkg/diagnostics:
19      add new capability: output of Global/Regional & per-level statistics ;
20      tested against monitor output (including land & thSIce) on various exp.
21    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
22    
23    checkpoint57h_done
24      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
25      data.diagnostics, data.gchem, data.ptracers) is done.
26    
27    o pkg/diagnostics: prepare for Global/Regional statistics.
28      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
29    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
30      and rename it: DIFFERENT_MULTIPLE
31    
32    checkpoint57h_post
33    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
34    o pkg/diagnostics: change output frequency, now in seconds (instead
35      of Nb of iterations). This requires to change data.diagnostics.
36    checkpoint57h_pre
37    
38    o in mnc, let the user create the output dir if both mnc_outdir_date
39      and mnc_outdir_num are false
40    o add fflags() to pkg/diagnostics which allows one to specify, on a
41      per-file basis, the file precision [default behavior is unchanged]
42    o added diagnostics to pkg/kpp, including computation of mixed layer
43      depth based on a temperature/density criterion
44    o updated verification/natl_box to test the new pkg/kpp diagnostics
45    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
46    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
47    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
48      not mnc -- this mistake was found by JMC and is now corrected
49    
50    checkpoint57g_post
51    o add Adams-Bashforth 3rd Order time stepping:
52      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
53      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
54    checkpoint57g_pre
55    
56    o make lambda[Theta,Salt]ClimRelax spatially varying
57      (default remains spatially uniform constant based on tau)
58    o added new control variables
59      * init. uVel, vVel, etanN
60      * lambda[Theta,Salt]ClimRelax
61    o separate masks used for ctrl_pack/unpack 'from write_grid' output
62      (suggested by G. Forget)
63    
64    checkpoint57f_post
65    o add parameter "baseTime" = model base time = time at iteration zero
66      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
67      account for baseTime shift
68    o move Coriolis arrays from PARAMS.h to GRID.h
69    checkpoint57f_pre
70    
71    o mnc-ifying the seaice package
72    o introduced an alternative length scale calculation for use in the limiting
73      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
74    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
75    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
76      as well as grad(vort3).  Made it compatible with both approximate form
77      for the cubed sphere and full form of these gradients.  Added flag
78      useFullLeith to select between approximate and full form.  
79    o add "d0" in getcon.F to reduce differences between compilers/platforms
80      update output.txt of exp. fizhi-gridalt-hs
81    o change port_rand funtion to allow to set the seed.
82    o fix obscure MNC bug involving conversion between reals and integers
83      - it caused no problems with certain (eg. gcc, ifc) compilers but the
84        new version is now more standards-compliant
85    o adjoint-related modifications
86      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
87      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
88      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
89    
90    checkpoint57e_post
91    o Adding eddy stress controls a la Ferreira et al.
92    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
93    
94    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
95      update output.txt of exp. fizhi-gridalt-hs
96    o add more "Z" dimensions and associated coordinate vars to MNC
97    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
98    o parameter calendarDumps: when set, approximate months (30-31 days) and years
99      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
100      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
101      months and years.  Requires pkg/cal.
102    o diagnostics: add pickup functionality
103      - off by default for backwards compatibility
104      - current version only uses MDSIO -- MNC will be added
105    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
106    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
107    
108    checkpoint57d_post
109    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
110    o modify verification/ideal_2D_oce so that it tests the creation of mnc
111      output from the diagnostics package
112    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
113    o make genmake2 more portable by using ".$FS" instead of ".f" for more
114      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
115    o add coordinate variables to the MNC output from the diagnostics package
116    o change MNC-flags default value: true when useMNC=TRUE
117    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
118      the ability (off by default) to read the grid information using MNC
119    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
120    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
121    o do snap-shot diagnostics at the middle of the time-interval (instead of
122      at the end).
123    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
124      new test for AIM with thSIce + slab-ocean
125    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
126    o move state variable diagnostics to the beginning of the time step ;
127      (note: still needs some work specially for snap-shot diagnostics)
128      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
129    
130    checkpoint57c_post
131    o Change testing option (-ieee) to get closer agreement between g77 & ifort
132    o generate new output.txt files on faulks with g77 & the new -ieee option
133    checkpoint57c_pre
134    
135    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
136      update output.txt of exp. global_ocean.90x40x15
137    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
138      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
139    o add saltFlux(+File) forcing capability with periodicExternalForcing
140    o allow to use pkg diagnostics for GM-Redi & ThSIce output
141    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
142    o improvements for the MNC output from DIAGNOSTICS:
143      - correct handling of the unlimitied dimension
144      - all dims now have associated coordinate variables
145      - variables located at U, V, and Corner ("Z") points are now written
146        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
147        *all* data points are output
148    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
149    o added pkg/seaice/seaice_monitor.F
150    o mdsio_readfield.F can now read files visible only to master MPI process.
151    o pkg/seaice: some test code for ice-modified ocean stress
152    o exf_getffields interpolation defaults to bilinear for all scalar forcing
153      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
154      spurious negative numbers for precipitation and humidity.  Will cause
155      some small numerical differences for integrations using pkg/exf/exf_interp.F.
156    o pkg/ctrl/
157      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
158        May be enabled via doPackDiag
159      *  introduce z-scaling of
160         + gradient (doZscalePack) and
161         + control (doZscaleUnpack)
162    o pkg/mdsio/
163      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
164      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
165    
166    checkpoint57b_post
167    o simplify options in diagnostics_fill arguments (remove weird combinations)
168    o fix MNC coordinate variables so that they now contain per-face index
169      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
170      general, EXCH2 grids are only aligned to a "local" coordinate system
171    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
172    o Implement instantaneous output within pkg diagnostics:
173      setting a negative frequency in data.diagnostics produces
174     "snap-shot" output (as opposed to time-average if freq > 0)
175    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
176      NOTE: change ptracer diagnostics name: use 2 characters to work with
177            more than 9 tracers. Add also diagnostics of advect & diffus flux.
178    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
179      becomes the coordinate variable for the 'T' dimension
180    o add CF-style coordinate variables to MNC
181      - just a first cut:  numbers are meaningless on the cubesphere and
182        missing along the T axis but otherwise it works!
183    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
184    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
185    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
186      this is based directly on what the model compute, so that the content of
187      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
188    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
189    o clean up build options files for SunOS, in particular
190      - remove -traditional from xmakedepend
191      - change -xarch=v9 to -xarch=native for f77
192      - restore use of make (not gmake)
193      - add CC=gcc if using g77
194    o changes per discussion of AM, JMC, & EH3 today:
195      - move redundant "grid" variables out of "state" -- in preparation of
196        creating proper CF-style coordinate variables and in recognition
197        that any/all grid variables can be easily copied (eg. w/NCO) from
198        the grid files into any of the other NetCDF files
199      - *always* output grid variables with MDSIO (this will eventually be
200        changed)
201      - output MNC grid file if useMNC is true
202    o every instance of _END_MASTER() has been found and replaced with
203      _END_MASTER( myThid ) in order to satisfy certain picky Sun
204      preprocessors
205    o re-arrange diagnostics pkg initialisation:
206     - allow each package to extend the available diagnostics list
207     - add some checking and fix small problems (multi-threaded, ...)
208     - new S/R diagnostics_fill (replace fill_diagnostics):
209       look through the short list of active diag. (instead of the long list)
210       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
211    
212    checkpoint57a_post
213    o this set of changes restores TAMC compatibility
214      tested for global_ocean.90x40x15 adjoint on trough
215      (what a pain)
216    
217    checkpoint57a_pre
218    o some modifs in tools/build_options for sunos
219    o call ctrl_pack for ctrl at end for optimcycle=0
220    
221    checkpoint57
222    o add horizontal bi-harmonic viscosity for vertical velocity
223      - new parameter viscA4W (defaults to viscA4)
224      - affects only non-hydrostatic code
225      - to be done: no-slip lateral boundary conditions
226    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
227    o implement Implicit Vertical advection for pTracers
228    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
229      (implemented also for implicit vertical diffusion & advection)
230    o OBCS: extend application of tracer open boundary conditions
231      to a strip beyond the boundary of width Olx/Oly
232    o add call monitor to TAF set of required calls (flow directives)
233      and include in natl_box_adjoint
234    o untangle a few ifdefs related to cost, ctrl, autodiff
235      untangel a few ALLOW_ECCO_OPTIMIZATION
236    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
237      (theta2, salt2 in ecco_cost_weights)
238    
239    checkpoint56c_post
240    o OBCS as control variables
241      - update ctrl_ad_diff.list, obcs_ad_diff.list
242      - remove balance of obcs controls from default
243      - fix index bug nobcs in ctrl_init
244      - fix dummy fields filen in ctrl_pack
245      - add dummy weights for obcs
246    o lsopt: comment out fort.94 output
247    o optim:
248      - remove unnecessary header files
249      - adjusted namelists
250      - add xerbla.F to Makefile
251    o exf:
252      - multiple modifications of exf_check_range
253      - unit change in exf_init_runoff from [m/year] to [m/s]
254    o mdsio:
255      - i/o-vector change debugLevel from debLevA to debLevB
256    
257    checkpoint56b_post
258    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
259      is called from DO_THE_MODEL_IO
260      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
261      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
262      - clean up PTRACERS_WRITE_TIMEAVE a little
263    o add another verification experiment that tests both the cfc-pkg and
264      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
265      reactive tendencies treated inline with regular timestepping
266    o testreport previously did a lousy job of comparing small numbers, so
267      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
268      implemented in the little c-progam tmp_cmpnum.c which is embedded in
269      testreport.
270    o ptracers_monitor: bug fix for MPI
271    
272    checkpoint56a_post
273    o GCHEM: finish reorganizating the package
274      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
275        (introduces another 3D-array for each passive tracer, but only if
276        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
277        gchemTendency is not needed because the timestep is done separately)
278      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
279      - GCHEM is now---more or less cleanly---separate from PTRACERS
280      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
281        so clear to me how that should be done in a general way.
282    o CFC: improve formatting of output in CFC_ATMOS
283    o PTRACERS:
284      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
285        that ALL experiments with ptracers enable can be checked. This makes
286        GCHEM_MONITOR obsolete.
287      - include a runtime parameter PTRACERS_monitorFreq that defaults to
288        monitorFreq
289      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
290    o add PTRACERS (PTR0[1-5]) to testreport output
291    o exf_check_range:
292      * default changed to .TRUE.
293      * will check values for niter0 if debLevA, every timestep if debLevB
294      * STOP in exf_check_range if 'out of range'
295      * range chosen generous to allow for potential extema
296      TBD: a version with stricter range
297           permitted range would be runtime parameters
298    o GMredi:
299      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
300      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
301      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
302    o GCHEM:
303      - move call to GCHEM_FORCING_SEP, so that it is now called before
304        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
305      - introduced a useGCHEM runtime flag and applied it everywhere.
306      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
307        this flag is now only visible within GCHEM-pkg routines.
308      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
309        be replaced by a 3D array that is computed before thermodynamics; for
310        this, the tracer ID iTracer had to be included into the parameter list
311        of ptracers_forcing
312      - set up forward_step to call gchem_forcing, that will replace
313        gchem_forcing_int in ptracers_forcing
314      - cleaning up
315    o small cleaning of exch2: remove files that are also in eesupp/src
316    
317    checkpoint56
318    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
319    o mnc: cleanup "full" files--fixes out-of-memory problem
320    o ECCO-GODAE
321      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
322      * fully merged and updated from SIO code
323        windstress sign change affects
324        - exf_inscal_[u/v]stress
325        - sign of xx_tau[u/v] adjustments
326        - signs in cost_scat
327      * ctrl_get_gen: avoid update of tau[u/v] for first few days
328      * natl_box_adjoint updated and compressed
329      * 2-level checkpoint switch added
330        (tested in EXP. 1 of natl_box_adjoint)
331      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
332    o SVD
333      * first complete, non-hacked version for SVD calculations
334      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
335        performed via direct access files admtlm_vector.it????
336        (via ctrl_[un]pack)
337      * optimcycle is used for ARPACK iteration counter
338        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
339      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
340        and add linear transforms where necessary
341      * controls are initial/final SST, SSS (can be extended; need to check
342        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
343    o mdsio: filename info to both stderr, stdout
344    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
345      from sign change
346    
347    checkpoint55j_post
348    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
349      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
350    o add consistent build directories and .cvsignore files to verification
351    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
352    o make all subroutines 30 or less characters in length for certain older
353      compilers to work (a thorough search only turns up two routines in
354      pkg/ptracers)
355    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
356      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
357    
358    checkpoint55i_post
359    o change arrays for total vertical diffusivity (2.D if explicit,
360      3.D if implicit) ; each ptracer uses its own background value.
361    o added mnc/NetCDF output capability to ocn_compon_interf
362      - added bits to verification/cpl_aim+ocn so that it can run on
363        ITRDA and other clusters without the mpirun "-wd" option
364    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
365      configuration
366    o give MNC the ability to create additional files rather than
367      exceeding a specified file size limit "MNC_MAX_FILESIZE"
368      - the default is just less than 2GB which is a practical limit
369        on many systems
370    o Compute the non-local term using either KPP vertical diffusivity (=default)
371       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
372    
373    checkpoint55h_post
374    o add verification test "vermix"
375    o remove all the *_ioinc flags and replace with the single global
376      outputTypesInclusive flag
377    o allow to set a vertical profile of vertical diffusivity for T & S
378    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
379    o useMNC moved from data.mnc to data.pkg
380    
381    checkpoint55g_post
382    o Renaming carbon AD experiments to comply with testreport conventions
383    o Updating adjoint of Held-Suarez hs94.1x64x5
384    o Fixing directives for non-ECCO forward_step, after ECCO directives
385      have been fixed to avoid recomp. of do_oceanic_phys
386      Works well for global_ocean.90x40x15,
387      but recomp. issue remains for carbon
388    o Updating adjoint output for natl_box_adjoint after
389      pkg/ecco has been modified (see taga c55d_post)
390    
391    checkpoint55f_post
392    o rename to timeave_init_fixed
393    
394    checkpoint55e_post
395    o some delicate re-shuffle of store directives to avoid one
396      extra call of do_oceanic_physics
397      affects ecco_the_main_loop.F, do_oceanic_physics.F
398      checkpoint_lev1_directives.h
399    o NB: this may break global_ocean adjoint temporarily,
400      but it is clear how to fix it. Will do later, need this now.
401    
402    checkpoint55d_post
403    o ECCO specific cost function terms (up-to-date with 1x1 runs)
404    o ecco_cost_weights is modified to 1x1 runs
405    o modifs to allow observations to be read in as
406      single file or yearly files
407    o enable to read exf forcing fields as either
408      single file or yearly files (flag useExfYearlyFields)
409    checkpoint55d_pre
410    
411    o switch between 2-level and 3-level checkpointing
412    o add ability of MNC to write local and "partial" (eg. 2D slices where
413      the full 3D field is never actually stored) arrays to NetCDF files
414      with the correct (that is, the complete multi-dimensional) set of
415      array indicies
416      - used in mom_vecinv() to write the diagFreq output
417      - tested (demonstrated) in verification/aim.5l_cs
418    o further mnc-ification
419      - add verification/lab_sea to the list with mnc setups
420      - fix undefined mnc v-names in cd_code
421      - add kpp to mnc output (both snapshot and timeave)
422    o non-hydrostatic code
423      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
424        in calc_gw.F
425      - defaults to viscAh
426      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
427        friction or Leith) in non-hydrostatic mode, as long as there is
428        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
429    o pkg/cost
430      extend simple cost functions to treat time mean quantities
431      (T,U,V) via cost_accumulate_state from cost_tile
432    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
433        be 2 times larger than the minimum size the advection scheme requires.
434        now get a perfect conservation of salt in advect_cs test-exp (updated)
435    o GGL90 (Gaspar's TKE mixed layer)
436      - add horizontal diffusion of TKE, requires exchanges in
437        do_fields_blocking_exchanges, horizontal diffusivity is zero by
438        default. In OPA there is no horizontal diffusion of TKE but the
439        mixing coefficients are computed from a horizontal average of TKE of
440        6 points or so. I think that diffusion has a little more physical
441        justification.
442      - clean up ggl90_calc in the hope of reducing memory usage (this hope
443        was in vain)
444      - mask tke-variable in ggl90_init
445    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
446    o fix biharmonic diffusion on CS-grid.
447    o more obcs stuff
448      - added obcs_external_fields_load as an alternative to the EXF-pkg option
449        for reading boundary values. This routine is called from
450        obcs_prescribe_read
451      - updated obcs_check
452      - changed sponge layer relaxation parameter units for days to seconds
453      - turned off sponge layer by default
454      - changed argument list of OBCS_CALC to myTime+deltaTclock
455      - fixed about 35 bugs in obcs_external_fields_load
456    
457    checkpoint55c_post
458    o obcs stuff
459      - new runtime flags useOBCSprescribe, useOBCSbalance
460      - re-arranged obcs_calc
461      - moved exf_getobcs to obcs_prescibe_read
462        obcs_prescibe_read is called after ORLANSKI stuff
463        and independent of it (executable can contain all).
464      - updated obcs_check
465      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
466        These may be necessary only if tangential velocities are
467        prescribed at OB, not sure, needs testing.
468    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
469      which simplifies the calls and passes the ifc check-bounds test
470    
471    checkpoint55b_post
472    o add a 2D scalar, Z location, exchange_2 routine.
473    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
474      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
475      affects advect_cs results (for the wrong reason): update output.txt
476    o use a more standard discretization for biharmonic viscosity ;
477     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
478      affects results of dome set-up: update output.txt
479    o fix gad_advection.F (CubedSphere part), back to version 1.23
480    o fix bug in mom_vi_del2uv.F (CubedSphere part).
481    
482    checkpoint55a_post
483    o merged code to
484      * prescribe/read time-dependent open boundaries
485        (works in conjunction with exf, cal)
486      * sponge layer code for open boundaries
487      * each boundary N/S/E/W now has its own CPP option
488        (healthy for the adjoint)
489    
490    checkpoint55
491    o up-to-date adjoint of previous breaks
492      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
493      - global_ocean_ebm: adjoint still needs fix (TLM ok)
494      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
495      - carbon: * remove tr1-related adjoint verification
496                * add ptracer as control variable
497    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
498      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
499    
500    checkpoint54f_post
501    o in verification/carbin/ remove experiment related to
502      ALLOW_PASSIVE_TRACER (array tr1 etc)
503      code_ad/ input_ad/ results_ad
504    
505    o add two new packages
506      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
507        + subject to optimization (memory)
508      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
509        + subject to reordering (many GOTOs in the original code)
510        + so far opps is called for every (i,j) point, and then operates in
511          the vertical; one may want to reorder the scheme in order operate in
512          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
513          fields)
514    o overhaul of IO so that we now have flags for MDSIO and/or MNC
515      - all verification tests compile and run with linux_ia32_g77
516      - defaults are compatible with current input files--nothing
517        should change if you were not previously using MNC
518      - MNC output has been added in numerous places (eg. timeave)
519        but there are still a few writes not yet do-able with MNC
520        (this is in progress)
521      - flags now allow for either/or/both use of MDSIO and MNC and
522        documentation will soon follow
523      - numerous small formatting cleanups for ProTeX
524    o add version info (via BUILD_INFO.h) to MNC and stdout
525    
526    checkpoint54e_post
527    o add two new packages
528      - pp81 (Packanowski and Philander, 1981), Richardson number and
529        stratification dependent mixing
530      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
531      - these scheme operate in a similar manner as KPP (without ghat, of
532        course), however there is only one diffusivity that is used for both
533        temperature and salinity (and passive tracers)ç
534    o add offline package
535    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
536      provided by Stephanie Dutkiewicz
537    o genmake2: add ability to search for C compilers and cleanup test output
538      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
539    
540    checkpoint54d_post
541    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
542    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
543      leading to additional shift by 5 days each year of integration
544       (i.e. leading to considerable offset over the years)
545    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
546    o start with no AB and no initial filtering (staggerTimeStep):
547      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
548    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
549      (external loading & cpl import/export stay in forward_step.F)
550    o update coupling interface to work with new staggerTimeStep
551    o change MDSIO ptracers_pickup.
552    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
553    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
554    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
555    
556    checkpoint54c_post
557    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
558      this affects (truncation error) output.txt of test-exp:
559       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
560    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
561    o change Qnet to always be the net heat flux, (+upward).
562      affects (truncation error) output of natl_box exp.: updated
563    o define the max number of passive tracers in PTRACERS_SIZE.h
564    o start to test mnc routinely in exp0
565    o add sea-ice loading (sIceLoad) as a new forcing field.
566    
567    checkpoint54b_post
568    o add testreport "-j JOBS" option for parallel builds (tested and pretty
569       impressive on Altix and Opteron systems)
570    o diagnostics can now write NetCDF files through the mnc package
571    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
572    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
573    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
574      affects (truncation error) output of lab_sea & natl_box exp.: updated
575    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
576    
577    checkpoint54a_post
578    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
579    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
580    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
581    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
582      + internal_wave (shift in writing cg2d_ini_res)
583    checkpoint54a_pre
584    
585    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
586      - modified verification/lab_sea and natl_box_adjoint accordingly
587    
588    checkpoint54
589    checkpoint53g_post
590    o prepare splitting of thermodynamics: store convect.counter in common block
591    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
592      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
593    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
594    o new parameter "nShapS": allow to treat differently S from T (nShapT)
595    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
596    o restore adjointability
597    
598    checkpoint53f_post
599    o modifications that affect AIM experiment results (update output.txt):
600      - no advection of S at top interface Nr (pkg/generic_advdiff)
601      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
602    o AIM pkg:
603      - include stability function into surf.Flux derivative relative to Tsurf
604      - calculate clear-sky radiation & surface temp. change (for diagnostics)
605    
606    checkpoint53e_post
607    o merged cylindrical coord configuration
608    o added rotating_tank experiment
609    checkpoint53e_pre
610    
611    checkpoint53d_post
612    o faulks upgraded: re-generate output.txt that have changed:
613       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
614    o Added Bryan and Lewis, 1979, vertical diffusivity profile
615    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
616    o added Sadourny discretization of Coriolis
617      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
618      - re-enabled use of omega3 (useAbsVorticity)
619    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
620      vector-invariant equations
621      - note: does *NOT* yet use same variable visc. for no-slip BC's.
622    o recoded the lateral boundary conditions for non-hydrostatic w, this time
623      hopefully without new bugs
624      - still to do: biharmonic friction for non-hydrostatic w
625    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
626    o regenerated output for global_ocean_ebm (using -ieee)
627    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
628      of mom_common/
629      - simple re-arrangement of instructions within computing loop
630    checkpoint53d_pre
631    
632    checkpoint53c_post
633    o new version of coupler for AIM+thSIce and Ocean models
634     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
635     - land: change Evaporation of snow
636     - aim with thSIce: fix bug in snow-precip.
637    o changes to calc_gw.F
638     - bug fix for w^2 term near the bottom boundary
639     - (hopefully) improve the lateral slip boundary condtions for use with
640        partial/looped cells
641      - because the bug fix changes two verification experiments anyway (exp5
642        and plume on slope), change the lateral boundary condition from half slip
643        to the value of no_slip_sides
644    o ebm package wasnt quite up to the parallel task. Fixed that.
645    o Adjoint of EBM package + verification
646      * TLM OK
647      * ADM not sufficient accuracy yet (needs further testing)
648    
649    checkpoint53b_post
650    o Commiting new energy balance model to repository
651      * package is pkg/ebm
652      * verif. is verification/global_ocean_ebm
653      * references are in ebm_driver.F
654    C      * X. Wang, P. Stone and J. Marotzke, 1999:
655    C        Global thermohaline circulation. Part I:
656    C        Sensitivity to atmospheric moisture transport.
657    C        J. Climate 12(1), 71-82
658    C      * X. Wang, P. Stone and J. Marotzke, 1999:
659    C        Global thermohaline circulation. Part II:
660    C        Sensitivity with interactive transport.
661    C        J. Climate 12(1), 83-91
662    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
663    C        Destabilization of the thermohaline circulation
664    C        by atmospheric eddy transports.
665    C        J. Climate 7(12), 1870-1882
666    o Will need long integration testing.
667    checkpoint53b_pre
668    
669    o created pkg/mom_common in preparation for variable viscosity code
670    o renamed and split ini_mnc_io
671    o pkg/land: only liquid water can diffuse or run-off
672    o AIM using land: soil wetness availability account for snow
673    o added printMapIncludesZeros to EEPARMS namelist
674    
675    checkpoint53a_post
676    o restore TAMC compatiility for exf_constants.h
677      (no usage of _d in .h)
678    o Additional storing in KPP in an attempt to fix
679      TAMC problem with adjoint of KPP code.
680      (no success...)
681      Identical code works fine with TAF.
682    o Fixed verification/natl_box_adjoint experiments.
683      Initial conditions for Experiments 4 and 5 are now
684      set to "SEAICE_initialHEFF=0", which is more reasonable,
685      and hence gives results closer to that of Experiment 2.
686      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
687    
688    checkpoint53
689    o stable checkpoint with up to date adjoint
690      TLM tests only run for 1st grdchk at the moment. Its unclear if
691      this is a code problem or a problem with resetting code for g_
692      variables that is being autogenerated wrong.
693      Otherwise:
694       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
695       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
696         are both still in chaos following their security messes.
697    
698    checkpoint52n_post
699    o various build (mostly genmake2) changes including:
700      - ability to build/run more easily within Cygwin and MacOS X
701      - more complicated Makefiles with a stronger dependence on Gnu Make
702    o pkg/seaice modifications
703      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
704        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
705        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
706      - changed proxy for geostrophic velocity and updated
707        verification/lab_sea/results/* accordingly
708      - removed ADI dynamic solver from pkg/seaice
709      - replaced all occurrences of 1/CSTICE or 1/CSUICE
710        they caused a segmentation fault under certain circumstances
711      - removed unused field WATR
712    o bug fix in exf-package:
713      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
714         now reflect that.
715    o small fixes in the cal-package:
716      - set reference date to first of January for the 'model'-calendar
717      - failing of cal_CheckDate in cal_FullDate now actually results in a
718        warning
719    o small modifications in exf-package to increase flexibility:
720      - change climtempfreeze from a constant to a runtime parameter that
721        is specified in data.exf_clim (default = -1.9)
722      - introduce runtime parameter windstressmax (default = 2.0) that is
723        specified in data.exf
724    o fix in pkg/thsice:
725      - update Evap (Tsf changes) to be consistent with Latent heat flux
726      - maintain snow precipitation unchanged (even if Tsf >=0).
727     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
728    
729    checkpoint52m_post
730    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
731      this does not change any of the results, because myIter=0 in swfrac always
732      lead to jwtype=2 (the default anyway), but the call makes little sense
733      as a default
734    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
735    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
736      atmospheric model (AIM) to use it ; add a "slab ocean" component.
737    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
738    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
739    o extending useSingleCpuIO option to work with new exch2 I/O format
740      - old-style, missing-tile I/O is still accessible by defining CPP
741        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
742    o monitor package can write to NetCDF files and/or STDOUT
743    o fix re-definition bug in MNC_GRID_INIT_ALL()
744    o doc/api_reference added
745      - a framework for building an API Reference Manual using all
746        the "protex" comments embedded in the code
747      - see pkg/generic_advdiff, pkg/mnc for examples
748    o MNC:
749      - make myThid the last argument for all subroutines
750      - new default for the grid files: NO halos
751      - add useMNC and other run-time flags
752      - separate per-file-group handling of the unlimited dimension
753      - early initialization of MNC w/ flags read at the eeboot stage
754        and lookup tables set in initialize_fixed
755      - write all MNC output to a freshly-created directory
756    o thermodynamics sea-ice (thsice) is now tested with testreport.
757    o test exp. advect_cs: use the standard cs32 grid ; update output.
758    o Added functionality to grdchk:
759      pick global i,j,k position (or nearest wet) where to perform check.
760    
761    checkpoint52l_post
762    o new land formulation:
763      a) use ground enthalpy as prognostic variable to ensure exact
764         energy conservation.
765      b) account for water temperature and for latent heat of freezing
766         in all processes (rain, run-off, ground storage)
767      c) compute surface and ground temperature implicitly.
768    o aim_v23 modification for new land model:
769      a) Treat separately land / ocean / sea-ice surface fluxes
770         to allow implicit computation of land & sea-ice surface temp.
771      b) add snow precipitation.
772    checkpoint52l_pre
773    
774    o fix problem (when 1 tile is empty) in min/max monitor.
775    o fix bug in timeAve (u,vZetatave in common block)
776    o no restoring terms under ice for pkg/seaice
777    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
778    o bug fix for pkg/seaice pickups
779    o change MNC call locations and add coordinate attributes
780    o mask vorticity at the corner ; affects global_ocean.cs output
781    o fix ini_curvilinear_grid ; test CS experiments with mpi
782    o aim.5l_cs: modify sea-ice fraction input file ; update output
783    o exf: Adding simple range check routine for exf fields after read
784    
785    checkpoint52k_post
786    o removed top-level directory "diags"
787      - we migrated these functions to pkg/timeave a long time ago
788    o fixed bug introduced in pkg/monitor
789    o accuracy ctrlprec = 32 insuffient for gradient checks using
790      averaged fields (I/O via cost_averages)
791      -> use ctrl.h in active_file*.F to control I/O precision.
792    o paramter list of CALL ADTHE_MAIN_LOOP
793    o added initial do_the_model_io to ecco
794    o set all ...Freq to zero after cost_final
795      taveFreq, dumpFreq, pChkptFreq
796    o MAIN and ECCO differentiability restored
797    
798    checkpoint52j_post
799    o fix nchklev in tamc.h for global_ocean...
800    o Bringing flow and store directives up-to-date
801    o Really weird thing!
802      call do_the_model_io from the_main_loop with parameters
803      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
804      TAF places a faulty re-call of initialise_varia
805      after cost_final call which should not be there!
806    checkpoint52j_pre
807    
808    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
809      error messages
810    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
811    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
812      debug output
813    o modfied mdsio_writefield.F to handle non-global files under exch2
814    o update AIM Cubed-Sphere exp (aim.5l_cs):
815      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
816    o update AIM Equatorial Channel exp:
817      use standard aim_v23 pkg and change the SST fields to be more realistic.
818    o globalFile now works with exch2
819    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
820      mon_vort3.F to make exch2 friendly with >1 tile per cube face
821    o limit timeave output for hi-res integrations
822    
823    checkpoint52i_post
824    o removed CPP_EEOPTIONS.h from verification/*/code
825    o updated the tiling for global_ocean_pressure
826    checkpoint52i_pre
827    
828    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
829      the old pkg/aim).
830    
831    checkpoint52h_pre
832    o shortened offending lines in exch2_send_rx?.template
833    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
834    o genmake2: add build & execute test for NetCDF code
835    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
836      old grid files, moved CPP_EEMACROS.h to pkg/exch2
837    o added useSingleCPUIO flag to monitor.F and mon_out.F
838    o added temporary hack for sea-ice dynamics on the cube:
839      metric terms are ignored and it is assumed that
840      there is no sea-ice on cube faces 1, 2, 4, and 5.
841    
842    checkpoint52f_post
843    o added exch2 cube routines to pkg/exch2
844    o modified hs94.cs-32x32x5 to use it
845    o added new grid files to hs94.cs-32x32x5
846    checkpoint52f_pre
847    
848    checkpoint52e_post
849    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
850      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
851    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
852      to work with implicit vertical advection and AB ;
853    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
854    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
855     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
856    checkpoint52e_pre
857    
858    o fix bug in impldiff when Nr=1 or Nr=2.
859    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
860    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
861    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
862      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
863    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
864    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
865    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
866    
867    checkpoint52d_post
868    o re-tiled many expts to allow comparison in multi-processor mode
869      - updated output accordingly
870      - changed hs94.128x64x5 to use intial T from file rather than use the
871        random number generator
872    o add infrastructure in model routines for fizhi and gridalt packages
873    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
874    o changes to permit hi-res, cubed-sphere, configuration
875      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
876      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
877      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
878        of surface winds for the cube
879      (A verification experiment, based on global_ocean.cs32x15, but with
880       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
881       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
882       complete with example surface forcing files and matlab scripts to look
883       at the output and compare it with that of global_ocean.cs32x15.)
884    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
885       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
886       to conform to the common rule.
887    o check-in the first version of the coupler + interfaces for multi-components
888       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
889       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
890       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
891       - ocean and atmos. share the same horizontal grid (no interpolation).
892       - exchanges between component and coupler is done in forward_step
893    o new verification experiment, cpl_aim+ocn:
894       coupled ocean - AIM atmosphere on cs32 grid.
895    
896    checkpoint52d_pre
897    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
898    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
899    
900    checkpoint52c_post
901    o Fixing OPTIONS files for use of exf:
902      - ALLOW_ECCO not needed
903      - ECCO_CPPOPTIONS.h should not be included from
904        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
905        as has been the case in the past
906      - All cal/exf related options are currently set in
907        single header file. Should remain so until we
908        agree on a consistent new policy.
909    o Removed all CPP options for cal package.
910      cal has no more CPP options.
911    o modified STOREs in GAD_ADVECTION
912    o corrected key comp. for passkey
913    
914    checkpoint52b_post
915    o new version: "thsice" of thermodynamic sea-ice pkg:
916     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
917     - modify fluxes but do not change theta directly;
918     - light cleaning of bulk_force pkg (still needed with thsice).
919     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
920       + output_thsice.txt to test thsice & bulk_force pkgs.
921    o put back grid & coriolis monitor output.
922    checkpoint52b_pre
923    
924    o call "do_the_model_io" at the beginning (=> dump initial state)
925    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
926    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
927      (need info on NUMBER_OF_PTRACERS)
928    o missing PTRACERS headers in some routines
929    o default tamc.h in pkg/autodiff supposed to crash
930      to ensure proper customization
931    
932    checkpoint52a_post
933    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
934      - moved surfaceTendencyTice from pkg/seaice to main code
935      - subroutine FREEZE_SURFACE now limits only surface temperature
936        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
937        => new output.txt for global_ocean.cs32x15 & global_with_exf
938      - keep the old version of FREEZE for backward compatibility;
939        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
940      - corresponding modifs for TAF directives
941    o added surface flux output variables to TIMEAVE_STATVARS
942    o time-averaged output for pkg/ptracers
943    o fix problem with ECCO-related divided adjoint
944      snapshot file was missing some ad-variables,
945      but no warning issued by TAF
946    
947    checkpoint52a_pre
948    o some bug fixes for #undef REAL4_IS_SLOW
949    
950    checkpoint52 = ecco_c52_e35
951    o after testing adjoints of checkpoint51u_post
952    
953    checkpoint51u_post
954    o this is the post-merge tag of the ecco-branch
955      (needs another clean checkout and re-testing)
956    o various natl_box_adjoint configs and results
957      but no input fields
958    o obcs adjoint not yet merged!
959    o adding ECCO global 1x1 and 2x2 degree configs
960    o updated/extended some store directives for seaice
961    o pkg/ecco now containes ecco-specific part of cost function
962    o top level routines the_main_loop, forward_step
963      supersede those in model/src/
964      previous input data.cost now in data.ecco
965      (new namelist ecco_cost_nml)
966    o in ctrl/ cleaned some cross-dependencies and updated CPP options
967    
968    checkpoint51t_post
969    o this is the pre-merge tag of the ecco-branch
970    
971    checkpoint51s_post
972    o cleanup: removed various obsolete #define-s
973    o pkg/grdchk
974      - renamed 'ph-grd 3' to 'grad-res'
975      - merged from ecco-branch
976        (remaining bug fixes for obcs gradient checks)
977      - additional high-precision output for testreport
978        (grep for 'precision_grdchk_result')
979    
980    checkpoint51r_post
981    o cleaned up or removed CPP_OPTIONS.h files
982    o updated results for some of the tests to reflect the new
983      optfiles (-ieee: -O0 instead of -O3)
984    
985    checkpoint51q_post
986    o cd_code:
987      - moved cd_scheme.F -> cd_code_scheme.F
988      - separate read_checkpoint from cd_code_ini_vars.F
989      - separated cd_code part from write_checkpoint
990      - updated AD_SOURCE, generated .flow
991      - added CD_CODE_VARS.h to the_main_loop
992      - Moving cd_code specific store dir.s to pkg/cd_code
993    o ctrl package totally restructured
994      - pack/unpack now optional and decoupled from
995        xx_/adxx_ I/O
996      - ctrl_pack/unpack cleaned
997        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
998      - confined inclusion of AD_CONFIG.h to where necessary.
999    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1000    
1001    checkpoint51p_post
1002    o create initial cd_code package
1003      - WARNING: the initialization of fields within packages
1004        is broken because INI_FIELDS (where READ_CHECKPOINT is
1005        called) is called *before* PACKAGES_INIT_VARIABLES.
1006        This seems to be backwards since
1007        1) its important to initially zero the entire field including
1008           the "halo" region
1009        2) zeroing needs to be done *before* reading pickup info
1010           and the pickup call might or might not happen in any
1011           particular run
1012      - this needs an overhaul for R2
1013    o cleanup verification/*/code/GMREDI_OPTIONS.h
1014    o cleanup testreport
1015    
1016    checkpoint51o_post
1017    o bringing AD-related verif's up to date with genmake2
1018      - carbon/
1019      - global_ocean.90x40x15/
1020      - hs.94.1x64x5/
1021      - (front_relax/ )
1022    o (more) consistent directory structure for AD-related verif.'s
1023    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1024    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1025    o bug fix in find_alpha.F for MDJWF:
1026      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1027        change rho -> rho-rhoConst
1028      - replace call find_rho to find_rhonum
1029    o initialisation of rFlx extended to full array (required by TAF)
1030      and shifted to thermodynamics
1031    o removed PTRACERS.h in ptracers routine
1032    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1033    o Correcting initialisations for fVerU, fVerV.
1034    o helping TAF to recognize dependency on kUp for
1035      fVerU, fVerV
1036    o Replacing delZ by delR in pkg/ctrl/
1037    checkpoint51o_pre
1038    
1039    o undid all of cp51 pending some cleanups and discussion
1040    o added the [#include "AD_CONFIG.h"] statement to all files that need
1041       it for adjoint/tl #defines
1042     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1043     o removed tools/genmake since it no longer works
1044    
1045    checkpoint51n_post
1046    o modifications to make FREEZE flux visible to pkg/kpp
1047      - moved surfaceTendencyTice from pkg/seaice to main code
1048      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1049      - subroutine FREEZE now limits only surface temperature
1050        (this means new output.txt for global_ocean.90x40x15,
1051         global_ocean.cs32x15, and global_with_exf)
1052    o added surface flux output variables to TIMEAVE_STATVARS
1053    
1054    checkpoint51n_pre
1055    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1056    o added [#include "AD_CONFIG.h"] to all files that use the following
1057      defines:
1058      - ALLOW_ADJOINT_RUN
1059      - ALLOW_TANGENTLINEAR_RUN
1060      - ALLOW_ECCO_OPTIMIZATION
1061    
1062    checkpoint51m_post
1063    o incorporating changes to get TAMC/TAF working in genmake2
1064      - added new TAMC/TAF targets to the Makefile
1065      - various cleanups related to package handling
1066      - these changes should have no impact on the forward model
1067    
1068    checkpoint51l_post
1069    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1070     - faster algorithm for cal_addtime.F
1071     - higher precision arithmetic, where needed
1072     - pkg/exf *startdate variables changed from calendar date to
1073       model integration time
1074    
1075    checkpoint51l_pre
1076    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1077    o enable to apply restoring on S & T only in a latitude band.
1078    o update output (external_forcing_surf modif. change truncation errors)
1079       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1080    
1081    checkpoint51k_post
1082    o change default to: useNHMTerms=.FALSE.
1083     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1084       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1085     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1086        exp1, ideal_2D_oce
1087     - change data file of oceanic exp (leave the results unchanged for now)
1088       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1089    o set gravitySign automatically according to the vertical coordinate used
1090      (and change sign: back to "logical" value: +1 when R increases downward)
1091    o added an include barrier to the default CPP_OPTIONS.h and
1092      removed the #include "PACKAGES_CONFIG.h" from it
1093    o fix a bug in mom_fluxform (from chk51j_post)
1094    
1095    checkpoint51j_post
1096    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1097    o adjusted some flow directives (dynamics, thermodynamics)
1098    o added cubed-sphere case to test cost function
1099    o heckpoint_lev?_directives.h now include
1100      pkg-specific directives, whenever those are enabled.
1101    o Moving pkg-specific flow directives to corresponding pkg
1102      Moving pkg-specific differentiation list to corresponding pkg
1103      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1104      ---> conventions are
1105           - pkg_ad.flow
1106           - pkg_ad_diff.list
1107           - pkg_ad_check_lev?_dir.h
1108    
1109    checkpoint51i_post
1110    o merge of the branch-genmake2
1111      - knowingly breaks the older genmake
1112      - automatic generation of all ALLOW_${PKG_NAME} defines
1113      - new testreport supersedes older testscript
1114    o large number of package inclusion and header cleanups
1115    checkpoint51i_pre
1116    
1117    o new output for adjoin of global ocean vector invariant
1118    o fix for checkpoint of thermodynamic seaice and bulk_force
1119    o Steph gchem various cleanups
1120    
1121    checkpoint 51h_pre
1122    o fixed some single quotes
1123    o modify gchem pkg to be more versatile
1124    o modifications to clean up dic pkg
1125    o add pkg/cfc
1126    
1127    checkpoint51g_post
1128    o provide links for ARPACK and ADM*TLM
1129    o start removing verification/vero/
1130    o update AD-related stuff
1131      (in particular some IF-statements in model/src/ routines)
1132    o adding to verification/global_ocean.90x40x15/ adjoint of
1133      vector invariant setup
1134    
1135    checkpoint51f_post
1136    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1137    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1138      of tracer Green's fucntions for ocean inversion project.
1139    
1140    checkpoint51f_pre
1141    o Added on-the-fly spatial interpolation capability
1142        "USE_EXF_INTERPOLATION" to pkg/exf.
1143      - This is a temporary Cartesian-grid hack until
1144        the super-duper ESMF coupler becomes available.
1145      - See verification/global_with_exf/README for usage example.
1146      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1147        flags and modified pkg/seaice accordingly.
1148    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1149        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1150        non-local transport term.
1151    
1152    checkpoint51e_post
1153    o pkg/mom_vecinv:
1154      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1155      - add time-ave diagnostic of vorticity advection.
1156    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1157    o atmospheric geopotential: - include water vapor effect;
1158                                - use p^kappa in p* scaling.
1159    o land pkg: read initial state from files.
1160    o AIM : add stratospheric drag in the upper level
1161    
1162    checkpoint51d_post
1163    o change function ILNBLNK (=> last non-blank char.) to return zero
1164      (instead of the string length) when the string. char is empty
1165    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1166    o modif's to restore TAMC compatibility
1167      - avoid "_d" constructs in PARAMETER declarations
1168      - avoid interrupting lines by comment lines
1169    o Use cluster local disks for purely local I/O
1170      vs. globally visible disks needed for ctrl stuff
1171      (merged from ecco-branch)
1172      - new active_file_loc... and mdsio_..._loc routines
1173      - affected packages: autodiff, ctrl, grdchk, mdsio
1174    
1175    checkpoint51c_post
1176    o introducing integer flag debugLevel
1177      - debLevZero: suppress all output
1178      - debLevA: standard
1179      - debLevB: equivalent to current debugMode=.TRUE.
1180    o introducing pathname variable mdsioLocalDir for mdsio
1181      that can be specified at runtime
1182      (relevant for cluster I/O to local disk)
1183    `
1184    >>>checkpoint51b_post
1185    adjoint of ptracers
1186    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1187    o extended state in checkpoint_lev?, etc.
1188    o alternative ctrl/cost with tr1 or ptracer
1189    o new comlev1_bibj_ptracers
1190    o new ptracers.flow
1191    o made ptracers_forcing same as external_forcing_s
1192    o added verification for adjoint with ptracers
1193      - adm. grdchk fail so far
1194      - tlm. grdchk OK
1195      - checked tapelev/comlev recomputations: OK
1196    <<<checkpoint51b_pre
1197    
1198    checkpoint51a_post
1199    o added code for biogeochemistry package
1200      - new pkgs: dic, gchem
1201      - new subroutine in ptracers
1202    o modify code for biogeo packages
1203      - in model/src and pkg/ptracers
1204    
1205    checkpoint51
1206    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1207      - autodiff, ctrl, exf, grdchk, seaice
1208      kept separate packages
1209      - cost, ecco, obcs
1210    o updating verification/internal_wave, verification/lab_sea
1211      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1212    
1213    checkpoint50i_post
1214    o Preparing next differentiable checkpoint and sync
1215      of MAIN vs. ecco-branch
1216      - 1st step: this one is differentiable
1217      - 2nd step: next(! not this) checkpoint will have updated packages
1218                  from ecco-branch)
1219    
1220    checkpoint50h_post
1221    o new package "land": provide surface BC for AIM.
1222    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1223    o AIM: use true log-P extrapolation for near surface temp (= as in
1224        F.Molteni paper) ; update aim.5l_cs output.
1225    o New variable in PARM03 for more flexible pickups
1226    o somewhat cleaned package initialisation sequence for
1227      ctrl/ cost/ ecco/ in packages_... routines
1228    
1229    checkpoint50g_post
1230    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1231      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1232      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1233        made the default because of faster convergence than ADI
1234    
1235    checkpoint50f_post
1236    o exf totally restructured
1237      - replaced all exf_set_ routines by one generic exf_set_gen.F
1238        and made sure it's still differentiable
1239      - split exf_getffields.F into new exf_bulkformulae.F
1240      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1241      - updated adjoint/makefile and relevant verif. accordingly
1242    
1243    checkpoint50f_pre
1244     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1245          + change Evap over land. (update aim.5l_cs output)
1246     o added missing .cvsignores and made uniform across expts
1247     o changed configuration of tidal_basin_2d expt
1248     o added pkg/debug functions for tracing code in fatal crashes
1249     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1250     o new fn in pkg/monitor to stop model if solution grows too big
1251     o removed lots of single quotes from comments
1252    
1253    checkpoint50e_post
1254    o make KPP work with PTRACERS
1255     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1256       nearly a copy of kpp_transport_s
1257     - there is no analogue to SurfaceTendencyS, so I have to use
1258       gPtr(of the surface layer) instead
1259    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1260    checkpoint50e_pre
1261    
1262    checkpoint50d_post
1263    o change kpp output from multiple-record state files to single-record state
1264      files analogous to write_state.F
1265    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1266      analogous to the cg2d-related output.
1267    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1268      so that writing to internal file fn (with length 512) fails.
1269    checkpoint50d_pre
1270    
1271    checkpoint50c_post
1272    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1273    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1274    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1275    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1276    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1277    
1278    checkpoint50c_pre
1279    Merging from release1_p13:
1280    o bug fix for pkg/seaice dynamic solver
1281    o Added SEAICE_initialHEFF to pkg/seaice
1282    
1283    checkpoint50b_post
1284    o store u*,v* in gU,V instead of in guNm1,gvNm1
1285    o in order to put the momForcing out of the Adams-Bashforth:
1286      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1287      to timestep.F
1288    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1289    o re-generate output for highly sensitive test-exp:
1290       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1291    
1292    checkpoint50b_pre
1293    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1294    o corrected CPP option mismatch in exf_Bulk... functions for case
1295      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1296    
1297    checkpoint50a_post
1298    o Bug fix for merging between c50 and KPP.
1299      ikey was passed from thermodynamics to kpp_calc via
1300      common block rather than being recomputed in kpp_calc,
1301      in contradiction with new key itdkey.
1302      New key ikppkey created, and tamc.h headers updated.
1303    
1304    checkpoint50
1305    - 2nd step of merge with ecco-branch:
1306      merge changes in ecco-branch back into main trunk
1307    - bug fix in find_alpha
1308    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1309    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1310    - merged some sliced AD support routines
1311    
1312    checkpoint49
1313    merged from ecco-branch:
1314    o exf:
1315      - Enable initialisation of forcing fields to constant
1316        (runtime) values.
1317      - in exf_getffields.F
1318        Reduce i-/j-loop to interior domain, discarding overlaps.
1319        That also fixes wrong TAF-key computations for key_1, key_2
1320        with bulf formulae.
1321      - exf_init.F modify #ifdef for exf_init_evap
1322      - exf_getffieldrec.F, ctrl_getrec.F
1323        The following INT-usages are not safe:
1324          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1325          fldcount = int(fldsecs/fldperiod) + 1
1326        and were modified.
1327    o autodiff: checkpoint_lev...
1328      - updated storing for bulk formulae (some arrays were missing)
1329      - added state for seaice package
1330      - synchronized with main branch
1331    o DIVA:
1332      Modif.s in
1333      - the_main_loop.F
1334      - the_model_main.F
1335      and added cost_final_restore.F cost_final_store.F
1336      o With these changes, it is possible to fully separate
1337        the first forward run to compute the cost function (mdthe_main_loop)
1338        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1339        into separate model executions.
1340        This enables better tuning of DIVA to given queue sizes.
1341      o Loss of cost function value in consecutive DIVA runs is
1342        fixed by storing to 'costfinal' file.
1343      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1344        beginning/end of adjoint integration is accounted for.
1345      The current changes apply to TAF-1.4.26.
1346      TAF has one remaining bug, requiring one manual change
1347      (see MITgcm manual).
1348    o cal: synchronized between MAIN and ecco-branch
1349    
1350    checkpoint48i_post
1351    o Changes to restore differentiability of code w.r.t. previous tag
1352      (mostly adding new routines to make list and replacing
1353      pressure by totPhiHyd).
1354    o Updated and merged grdchk package
1355      - has both ADM and TLM checks
1356      - works for single- and multi-proc.
1357      - output cleaned
1358      - worked successfully for parallel DIVA
1359    o genmake:
1360      - Adding -platform=SP4
1361      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1362    o Modif. for DIVA:
1363      ctrl_unpack should not be called in intermediate DIVA interval.
1364      (similar thing would apply for active files such as
1365      tbar, sbar, psbar, which should not be reinitialised;
1366      only relevant for ecco-branch)
1367    
1368    checkpoint48h_post
1369    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1370    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1371    o Added SEAICE_initialHEFF to pkg/seaice
1372    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1373    
1374    checkpoint48g_post
1375    --- EOS:
1376    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1377      store total Potential in totPhyHyd for diagnostics & EOS.
1378    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1379    --- Pressure/geopotential gradient:
1380    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1381    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1382      ( changes results of global_ocean_pressure )
1383    o NLFS + z-coord.: add eta*Rho' contribution.
1384    o accurate phiHyd when using interface-W at the middle between 2 centers
1385     ( changes results of ideal_2D_oce )
1386    o includes r* 2nd term in potential gradient.
1387    
1388    checkpoint48f_post
1389    Merging from release1_p12:
1390    o Modifications for using pkg/exf with pkg/seaice
1391      - improved description of the various forcing configurations
1392      - added basic radiation bulk formulae to pkg/exf
1393      - units/sign fix for evap computation in exf_getffields.F
1394      - updated verification/global_with_exf/results/output.txt
1395    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1396      (SBO) core products, including oceanic mass, center-of-mass,
1397      angular, and bottom pressure (see pkg/sbo/README.sbo).
1398    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1399      to avoid negative values in shallow regions.
1400      - updated verification/natl_box/results/output.txt
1401      - updated verification/lab_sea/results/output.txt
1402    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1403    o Added useSingleCpuIO option (see PARAMS.h).
1404    o Updated useSingleCpuIO option in mdsio_writefield.F to
1405      work with multi-field files, e.g., for single-file pickup.
1406    o pkg/seaice:
1407      - bug fix in growth.F: QNET for no shortwave case
1408      - added HeffFile for specifying initial sea-ice thickness
1409      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1410    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1411      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1412    o pkg/seaice:
1413      - adjoint-friendly modifications
1414      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1415    
1416    checkpoint48e_post
1417    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1418    o dynamics: change definition of computational domain & adapt mom_fluxform
1419      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1420    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1421        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1422        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1423        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1424        inverted_barometer solid-body.cs-32x32x1
1425      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1426    
1427    checkpoint48d_post
1428    o in preparation for r*:
1429     a) use pre-computed gradient of hydrostatic potential:
1430        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1431     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1432        => affects results of glob_oce_pressure (different truncation error)  
1433      update output.txt of ideal_2D_oce & global_ocean_pressure
1434    
1435    checkpoint48d_pre
1436    o in preparation for r*:
1437      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1438      pass the 2 comp. of the grad. as arguments to momentum S/R.
1439      but for the moment, only used if it does not change the results.
1440    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1441    
1442    checkpoint48c_post
1443    Modifications in treatment of initial flux forcing controls
1444    to avoid extra storing of flux fields.
1445    
1446    checkpoint48c_pre
1447    o Added tidal_basin_2d experiment (currently 1D!)
1448    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1449    
1450    checkpoint48b_post
1451    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1452     (modification to pressure gradient not yet implemented)
1453    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1454      (for U & V) that are used for vertical advection of momentum.
1455    
1456    checkpoint48a_post
1457    o In preparation for r*, use temp. array to compute vertical transport
1458       in flux-form momentum pkg. => change results of few test-exp.
1459      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1460                        lab_sea, natl_box & plume_on_slope
1461    
1462    checkpoint48
1463    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1464    
1465    checkpoint47j_post
1466    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1467    o moved adexch from forward_step to addummy_in_stepping
1468    o added exch in ctrl_map_...
1469    o aveFreq.=0. at end of cost_final to avoid overwrite in
1470      reverse checkpointing loop
1471    o Yet more changes in gmredi:
1472      * adgmredi_calc_tensor
1473        avoiding all recomputation of gmredi_slope_limit
1474      * adgmredi_x/y/rtransport
1475        added flag for excessive storing to avoid recomp. of
1476        u/v/rtans, dTdx/y/z
1477        -> this is not really necessary and very memory-consuming
1478      * adgmredi_slope_psi:
1479        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1480      * gmredi_slope_limit
1481        re-activated full calculation of taperfct for case 'ac02'
1482    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1483    
1484    checkpoint47i_post
1485    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1486    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1487      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1488    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1489    o gmredi: fix few bugs.
1490    
1491    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1492    This will be a good checkpoint to plug into the ecco-branch.
1493    o few modif.'s to get latest version adjointed
1494      (mainly kick out code in ini_linear_phisurf)
1495    o modif's to run adjoint with exactConserv
1496    o case GM_BOLUS_ADVEC should be cleaned
1497      S/R gmredi_slope_psi should be cleaned
1498    o verification/carbon now has exactConserv=.TRUE.
1499    
1500    checkpoint47g_post
1501    o time-average AIM output: becomes independent from statvars time-average
1502      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1503    o After TAF bug fix:
1504      Tested adjoint of gmredi package.
1505      Tests were done with checkpoint47 rather than with latest
1506      checkpoint47f_post since the latter is broken for the adjoint
1507      verification/carbon/ contains both ADM and TLM gradient checks.
1508    Here they are, before they get changed/lost/stolen.
1509    Mostly modif.'s to fix numerical sensitivities.
1510    Gradient checks OK for
1511    - GM_taper_scheme:
1512      * clipping
1513      * ac02
1514      * linear
1515      * glw91
1516      * dm95
1517      * ldd97
1518    - GMREDI_OPTIONS:
1519      * GM_VISBECK_VARIABLE_K
1520      * GM_NON_UNITY_DIAGONAL
1521      * GM_EXTRA_DIAGONAL
1522      * GM_BOLUS_ADVEC
1523    in conjunction with data.gmredi parameters to be checked in
1524    in a few minutes under verification/carbon/code/
1525    
1526    checkpoint47f_post
1527    Merging from release1_p10:
1528    o modifications for using pkg/exf with pkg/seaice
1529      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1530        and SEAICE_EXTERNAL_FLUXES
1531      - pkg/exf CPP options EXF_READ_EVAP and
1532        EXF_NO_BULK_COMPUTATIONS
1533      - usage examples are Experiments 8 and 9 in
1534        verification/lab_sea/README
1535      - verification/lab_sea default experiment now uses
1536        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1537    
1538    checkpoint47e_post
1539    o created a tag prior to creating a branch
1540    
1541    checkpoint47d_post
1542    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1543      at the bottom boundary had an erroneous half slip boundary condition
1544    o added bottom drag and no slip boundary condition capabilities to
1545      oceanic pressure coordinates code
1546    o added new verification experiment global_ocean_pressure, this experiment is
1547      also described in the tutorial section of the manual
1548    checkpoint47d_pre
1549    
1550    checkpoint47c_post
1551    o Added a verification experiment for a global cubed-sphere ocean run
1552      -  verification/global_ocean.cubed32x32x30
1553      -  uses pkg/therm_seaice and pkg/bulk_forcing
1554    
1555    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1556    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1557      when using P-coordinate; only implemented for atmospheric config.
1558    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1559      NOTES: requires option NONLIN_FRSURF to be "#define".
1560    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1561    
1562    checkpoint47b_post
1563    Merging from release1_p9:
1564    o pkg/seaice
1565      - removed GOTO's and added taf directives
1566      - double precision constants to reduce the g77 (Linux)
1567        to F77 (SGI) differences reported in release1_p8
1568    o tools/genmake
1569      - added SGI options
1570    o verification/testscript
1571      - updated to that of checkpoint47a_post
1572    o verification/global_ocean.90x40x15/input/eedata
1573      - modified for SGI f77 compatibility
1574    o verification/lab_sea
1575      - added description of sea-ice model
1576      - added missing matlab routines
1577      - added test of thermodynamics parallelization
1578    
1579    checkpoint47a_post
1580    o new pkg: aim_v23
1581     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1582       for now, keep the same surface forcing as before.
1583     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1584     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1585     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1586    o add diagnostic of surface correction term in monitor output
1587    
1588    o bulk_force and therm_seaice
1589    - Two packages:  bulk_force (Bulk forcing)
1590      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1591    - Earlier integration from Stephaine Dutkiewicz
1592      and Patrick Heimbach.
1593    - Two ifdef statements for compile time,
1594       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1595    
1596    checkpoint47
1597    differentiable version of checkpoint46n_post
1598    o bug fix in quasihydrostaticterms
1599    o * "clean" adjoint code (in terms of extensive recomputations)
1600        can now be obtained for all GMREDI options (i.e. for
1601        - GM_VISBECK_VARIABLE_K
1602        - GM_NON_UNITY_DIAGONAL
1603        - GM_EXTRA_DIAGONAL
1604        - GM_BOLUS_ADVEC )
1605      * However, wrong gradient check problem remains unsolved.
1606      * New CPP options have been introduced for different
1607        tapering schemes
1608    o external_fields_load now part of differentiation list
1609    o pressure needs multiple storing;
1610      would be nice to have store_pressure at beginning or
1611      end of forward_step, e.g. by having phiHyd global (5-dim.)
1612      (NB: pressure is needed for certain cases in find_rho,
1613      which is also invoked through convective_adjustment).
1614    o recomputations in find_rho for cases
1615     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1616    o #define ATMOSPHERIC_LOADING should be differentiable
1617    o ini_forcing shifted to begining of initialise_varia
1618    o Incorporating QNVS line search routines into MITgcm
1619      (this is separate code, and therefore not under pkg)
1620      lsopt/, optim/
1621    o Updated verification/carbon/
1622      - #define GM_VISBECK_VARIABLE_K
1623      - GM_taper_scheme    = 'ldd97'    
1624    
1625    checkpoint46n_post
1626    Merging from release1_p8:
1627    o verification/natl_box:
1628      updating new external_fields_load routine
1629    o New package: pkg/seaice
1630      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1631      The sea-ice code is based on Hibler (1979-1980).
1632      Two sea-ice dynamic solvers, ADI and LSR, are included.
1633      In addition to computing prognostic sea-ice variables and diagnosing
1634      the forcing/external data fields that drive the ocean model,
1635      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1636      The implied surface heat flux is then stored in variable
1637      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1638      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1639      non-local transport term.  Because this call precedes model
1640      thermodynamics, temperature under sea-ice may not be "exactly" at
1641      the freezing point by the time theta is dumped or time-averaged.
1642      N.B.: fairly large differences in accuracy occur across
1643            different platforms/compilers; comparison between
1644            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1645            generated output gives:
1646       T           S           U           V
1647      C D M    c        m  s        m  s        m  s        m  s
1648      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1649      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1650      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1651    
1652      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1653    o GAD:
1654      - generated new common blocks to account for call of
1655        same gad routines with differing traceridentities
1656        (needed to modify tracerIdentity indices in GAD.h)
1657      - generated separate common blocks for case useCubedSphereExchange
1658        (Department of Futurology)
1659      - parameter lists to gmredi_?transport: added tracerIdentity
1660      - added new key indices to tamc.h
1661    o external_fields_load:
1662      - added this routine to TAF list
1663      - needed to make some common blocks global and additional storing
1664        along the same lines as exf package (checkpoint_lev?_directives.h)
1665    o exf:
1666      updated external forcing package
1667      - bug fixes carried over from ecco-branch
1668        (missing OBCS_OPTIONS.h in two routines)
1669      - enable easy to use "no forcing".
1670      - added exf I/O for atmospheric loading
1671      - added exf I/O for runoff data
1672      - transfered scaling between exf <-> MITgcm to exf namelist
1673    o Adding new verification experiment global_with_exf.
1674      This verification experiment is almost identical to the
1675      global_ocean.90x40x15 experiment, except that it uses
1676      the exf (and cal) package instead of the
1677      external_fields_load routine (cf README file).
1678    
1679    checkpoint46m_post
1680    o modified testscript to return -- when there are no lines of "%MON" output
1681    o added new flag "quasiHydrostatic" for QH mode
1682      and new routine quasihydrostaticterms()
1683    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1684      New routine: mom_u_coriolis_nh()
1685    o fixed sign of non-hydrostatic metric terms in u and v equations.
1686      Depend on correct sign of gravitySign.
1687    o added work.pc* to .cvsignore in aim directories using ifc
1688    o introduced flag for controllin non-hydrostatic metric terms
1689    o removed gravitySign from PARM04
1690    o switched to g77/ifc from pgf77 in aim experiments
1691    
1692    checkpoint46l_post
1693    o made convective adjustment work with pressure coordinates:
1694     - changed the direction of k-loop in convective_adjustment.F for the
1695       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1696     - adjusted the reference pressure k-index in convective_adjustment.F
1697     - adjusted the convection condition in convect.F (in analogy to
1698       calc_ivdc.F)
1699     - convective_adjustment no longer computes anything on the halos
1700     - removed the warnings about negative salinity from find_rho.F and
1701       find_alpha.F; instead the new routine look_for_neg_salinity, called
1702       at the beginning of find_rho, find_alpha, and find_beta, does a
1703       check of the entire slice, if CPP-option
1704       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1705    checkpoint46l_pre
1706    
1707    checkpoint46k_post
1708    o fixed the verification/global_ocean.90x40x15 experiment:
1709     - new bathymetry (the world according to A., JMC, and M.)
1710     - new initial fields and forcing fields (*.bin files)
1711     - new POLY3.COEFFS (for the next release one should switch to a full
1712       equation of state: JMD95P or MDJWF)
1713     - fixed several errors and redundancies in the data file
1714     - experiment uses looped cells
1715     - added matlab directory with diagnostic scripts for plotting of output
1716    
1717    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1718     - read AIM physics parameters from a file (data.aimphys)
1719     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1720    
1721    checkpoint46j_post
1722    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1723    o move wVel computation at the end of the time step, in S/R integr_continuity
1724    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1725    o update timeave pkg for wVel diagnostic.
1726    checkpoint46j_pre
1727    
1728    checkpoint46i_post
1729    o Clean up AIM package (and keep the results unchanged):
1730      include CPP_OPTION and use IMPLICT NONE in all routines ;
1731      declare all the variables _RL ; use _d 0 for all numerical constants.
1732      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1733    
1734    checkpoint46h_post
1735    o cleaned up the use of rhoNil and rhoConst.
1736      - rhoNil should only appear in the LINEAR equation of state, everywhere
1737        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1738        and the dynamical equations are all divided by rhoConst
1739    o introduced new parameter rhoConstFresh, a reference density of fresh
1740      water, to remove the fresh water flux's dependence on rhoNil. The default
1741      value is 999.8 kg/m^3
1742    o cleanup up external_forcing.F and external_forcing_surf.F
1743      - can now be used by both OCEANIC and OCEANICP
1744    checkpoint46h_pre
1745    
1746     Added code to convert surface volume flux (fresh water) into
1747     a mass flux when using P coordinates in the ocean (OCEANICP).
1748     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1749    
1750    checkpoint46g_post
1751    o Include a new diagnostic variable phiHydLow for the ocean model
1752      - in z-coordinates, it is the bottom pressure anomaly
1753      - in p-coordinates, it is the sea surface elevation
1754      - in both cases, these variable have global drift, reflecting the mass
1755        drift in z-coordinates and the volume drift in p-coordinates
1756      - included time averaging for phiHydLow, be aware of the drift!
1757    o depth-dependent computation of Bo_surf for pressure coordinates
1758      in the ocean (buoyancyRelation='OCEANICP')
1759      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1760        Theta, Salinity, and Pressure in the parameter list. This routine is
1761        presently contained in find_rho.F. This routine does not give the
1762        correct density for 'POLY3', which would be a z-dependent reference
1763        density.
1764    o cleaned up find_rho
1765      - removed obsolete 'eqn' from the parameter list.
1766    o added two new verification experiments: gop and goz
1767      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1768    checkpoint46g_pre
1769    
1770    checkpoint46f_post
1771    o Enable tangent linear (forward mode) gradient checks:
1772      - extended active file handling to g_... files
1773      - added TANGENT_SIMULATION to theSimulationMode
1774      - extended grdchk package accordingly
1775    o added tangent linear setup in verification/carbon/code_ftl
1776    o added adjoint setup in verification/front_relax/code_ad
1777    
1778    checkpoint46e_post
1779    o Added new equation of state -> MDJWF
1780      - EOS of McDougall et al., 2002, JAOT, submitted
1781      - caveat: the equation of state is only valid for a smaller (more
1782        realistic?) range of values than JMD95P/Z and UNESCO
1783      - added masks to the calculation of pressure in store_pressure
1784      - added more check values for density in check_eos (ini_eos.F), some of
1785        the old check values are out of the range of the MDJWF-eos, so don't
1786        expect perfect matches for those
1787    checkpoint46e_pre
1788    
1789  checkpoint46d_post  checkpoint46d_post
1790  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1791    'OCEANICP', also initialised field pressure correctly in ini_eos in the    'OCEANICP', also initialised field pressure correctly in ini_eos in the
# Line 26  checkpoint46c_pre Line 1809  checkpoint46c_pre
1809    
1810  checkpoint46b_post  checkpoint46b_post
1811  o Added new equation of state -> JMD95Z and JMD95P  o Added new equation of state -> JMD95Z and JMD95P
1812    - EOS of Jackett and McDougall, 1995, JPO    - EOS of Jackett and McDougall, 1995, JAOT
1813    - moved all EOS parameters into EOS.h    - moved all EOS parameters into EOS.h
1814    - new routines ini_eos.F, store_pressure.F    - new routines ini_eos.F, store_pressure.F
1815  o Added UNESCO EOS, but not recommended because it requires  o Added UNESCO EOS, but not recommended because it requires

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