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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.490 by jmc, Mon May 23 03:08:58 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 pkg/diagnostics:
8      add new capability: output of Global/Regional & per-level statistics ;
9      tested against monitor output (including land & thSIce) on various exp.
10    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
11    
12    checkpoint57h_done
13      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
14      data.diagnostics, data.gchem, data.ptracers) is done.
15    
16    o pkg/diagnostics: prepare for Global/Regional statistics.
17      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
18    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
19      and rename it: DIFFERENT_MULTIPLE
20    
21    checkpoint57h_post
22    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
23    o pkg/diagnostics: change output frequency, now in seconds (instead
24      of Nb of iterations). This requires to change data.diagnostics.
25    checkpoint57h_pre
26    
27    o in mnc, let the user create the output dir if both mnc_outdir_date
28      and mnc_outdir_num are false
29    o add fflags() to pkg/diagnostics which allows one to specify, on a
30      per-file basis, the file precision [default behavior is unchanged]
31    o added diagnostics to pkg/kpp, including computation of mixed layer
32      depth based on a temperature/density criterion
33    o updated verification/natl_box to test the new pkg/kpp diagnostics
34    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
35    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
36    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
37      not mnc -- this mistake was found by JMC and is now corrected
38    
39    checkpoint57g_post
40    o add Adams-Bashforth 3rd Order time stepping:
41      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
42      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
43    checkpoint57g_pre
44    
45    o make lambda[Theta,Salt]ClimRelax spatially varying
46      (default remains spatially uniform constant based on tau)
47    o added new control variables
48      * init. uVel, vVel, etanN
49      * lambda[Theta,Salt]ClimRelax
50    o separate masks used for ctrl_pack/unpack 'from write_grid' output
51      (suggested by G. Forget)
52    
53    checkpoint57f_post
54    o add parameter "baseTime" = model base time = time at iteration zero
55      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
56      account for baseTime shift
57    o move Coriolis arrays from PARAMS.h to GRID.h
58    checkpoint57f_pre
59    
60    o mnc-ifying the seaice package
61    o introduced an alternative length scale calculation for use in the limiting
62      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
63    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
64    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
65      as well as grad(vort3).  Made it compatible with both approximate form
66      for the cubed sphere and full form of these gradients.  Added flag
67      useFullLeith to select between approximate and full form.  
68    o add "d0" in getcon.F to reduce differences between compilers/platforms
69      update output.txt of exp. fizhi-gridalt-hs
70    o change port_rand funtion to allow to set the seed.
71    o fix obscure MNC bug involving conversion between reals and integers
72      - it caused no problems with certain (eg. gcc, ifc) compilers but the
73        new version is now more standards-compliant
74    o adjoint-related modifications
75      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
76      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
77      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
78    
79    checkpoint57e_post
80    o Adding eddy stress controls a la Ferreira et al.
81    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
82    
83    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
84      update output.txt of exp. fizhi-gridalt-hs
85    o add more "Z" dimensions and associated coordinate vars to MNC
86    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
87    o parameter calendarDumps: when set, approximate months (30-31 days) and years
88      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
89      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
90      months and years.  Requires pkg/cal.
91    o diagnostics: add pickup functionality
92      - off by default for backwards compatibility
93      - current version only uses MDSIO -- MNC will be added
94    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
95    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
96    
97    checkpoint57d_post
98    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
99    o modify verification/ideal_2D_oce so that it tests the creation of mnc
100      output from the diagnostics package
101    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
102    o make genmake2 more portable by using ".$FS" instead of ".f" for more
103      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
104    o add coordinate variables to the MNC output from the diagnostics package
105    o change MNC-flags default value: true when useMNC=TRUE
106    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
107      the ability (off by default) to read the grid information using MNC
108    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
109    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
110    o do snap-shot diagnostics at the middle of the time-interval (instead of
111      at the end).
112    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
113      new test for AIM with thSIce + slab-ocean
114    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
115    o move state variable diagnostics to the beginning of the time step ;
116      (note: still needs some work specially for snap-shot diagnostics)
117      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
118    
119    checkpoint57c_post
120    o Change testing option (-ieee) to get closer agreement between g77 & ifort
121    o generate new output.txt files on faulks with g77 & the new -ieee option
122    checkpoint57c_pre
123    
124    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
125      update output.txt of exp. global_ocean.90x40x15
126    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
127      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
128    o add saltFlux(+File) forcing capability with periodicExternalForcing
129    o allow to use pkg diagnostics for GM-Redi & ThSIce output
130    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
131    o improvements for the MNC output from DIAGNOSTICS:
132      - correct handling of the unlimitied dimension
133      - all dims now have associated coordinate variables
134      - variables located at U, V, and Corner ("Z") points are now written
135        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
136        *all* data points are output
137    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
138    o added pkg/seaice/seaice_monitor.F
139    o mdsio_readfield.F can now read files visible only to master MPI process.
140    o pkg/seaice: some test code for ice-modified ocean stress
141    o exf_getffields interpolation defaults to bilinear for all scalar forcing
142      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
143      spurious negative numbers for precipitation and humidity.  Will cause
144      some small numerical differences for integrations using pkg/exf/exf_interp.F.
145    o pkg/ctrl/
146      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
147        May be enabled via doPackDiag
148      *  introduce z-scaling of
149         + gradient (doZscalePack) and
150         + control (doZscaleUnpack)
151    o pkg/mdsio/
152      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
153      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
154    
155    checkpoint57b_post
156    o simplify options in diagnostics_fill arguments (remove weird combinations)
157    o fix MNC coordinate variables so that they now contain per-face index
158      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
159      general, EXCH2 grids are only aligned to a "local" coordinate system
160    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
161    o Implement instantaneous output within pkg diagnostics:
162      setting a negative frequency in data.diagnostics produces
163     "snap-shot" output (as opposed to time-average if freq > 0)
164    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
165      NOTE: change ptracer diagnostics name: use 2 characters to work with
166            more than 9 tracers. Add also diagnostics of advect & diffus flux.
167    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
168      becomes the coordinate variable for the 'T' dimension
169    o add CF-style coordinate variables to MNC
170      - just a first cut:  numbers are meaningless on the cubesphere and
171        missing along the T axis but otherwise it works!
172    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
173    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
174    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
175      this is based directly on what the model compute, so that the content of
176      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
177    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
178    o clean up build options files for SunOS, in particular
179      - remove -traditional from xmakedepend
180      - change -xarch=v9 to -xarch=native for f77
181      - restore use of make (not gmake)
182      - add CC=gcc if using g77
183    o changes per discussion of AM, JMC, & EH3 today:
184      - move redundant "grid" variables out of "state" -- in preparation of
185        creating proper CF-style coordinate variables and in recognition
186        that any/all grid variables can be easily copied (eg. w/NCO) from
187        the grid files into any of the other NetCDF files
188      - *always* output grid variables with MDSIO (this will eventually be
189        changed)
190      - output MNC grid file if useMNC is true
191    o every instance of _END_MASTER() has been found and replaced with
192      _END_MASTER( myThid ) in order to satisfy certain picky Sun
193      preprocessors
194    o re-arrange diagnostics pkg initialisation:
195     - allow each package to extend the available diagnostics list
196     - add some checking and fix small problems (multi-threaded, ...)
197     - new S/R diagnostics_fill (replace fill_diagnostics):
198       look through the short list of active diag. (instead of the long list)
199       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
200    
201    checkpoint57a_post
202    o this set of changes restores TAMC compatibility
203      tested for global_ocean.90x40x15 adjoint on trough
204      (what a pain)
205    
206    checkpoint57a_pre
207    o some modifs in tools/build_options for sunos
208    o call ctrl_pack for ctrl at end for optimcycle=0
209    
210    checkpoint57
211    o add horizontal bi-harmonic viscosity for vertical velocity
212      - new parameter viscA4W (defaults to viscA4)
213      - affects only non-hydrostatic code
214      - to be done: no-slip lateral boundary conditions
215    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
216    o implement Implicit Vertical advection for pTracers
217    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
218      (implemented also for implicit vertical diffusion & advection)
219    o OBCS: extend application of tracer open boundary conditions
220      to a strip beyond the boundary of width Olx/Oly
221    o add call monitor to TAF set of required calls (flow directives)
222      and include in natl_box_adjoint
223    o untangle a few ifdefs related to cost, ctrl, autodiff
224      untangel a few ALLOW_ECCO_OPTIMIZATION
225    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
226      (theta2, salt2 in ecco_cost_weights)
227    
228    checkpoint56c_post
229    o OBCS as control variables
230      - update ctrl_ad_diff.list, obcs_ad_diff.list
231      - remove balance of obcs controls from default
232      - fix index bug nobcs in ctrl_init
233      - fix dummy fields filen in ctrl_pack
234      - add dummy weights for obcs
235    o lsopt: comment out fort.94 output
236    o optim:
237      - remove unnecessary header files
238      - adjusted namelists
239      - add xerbla.F to Makefile
240    o exf:
241      - multiple modifications of exf_check_range
242      - unit change in exf_init_runoff from [m/year] to [m/s]
243    o mdsio:
244      - i/o-vector change debugLevel from debLevA to debLevB
245    
246    checkpoint56b_post
247    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
248      is called from DO_THE_MODEL_IO
249      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
250      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
251      - clean up PTRACERS_WRITE_TIMEAVE a little
252    o add another verification experiment that tests both the cfc-pkg and
253      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
254      reactive tendencies treated inline with regular timestepping
255    o testreport previously did a lousy job of comparing small numbers, so
256      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
257      implemented in the little c-progam tmp_cmpnum.c which is embedded in
258      testreport.
259    o ptracers_monitor: bug fix for MPI
260    
261    checkpoint56a_post
262    o GCHEM: finish reorganizating the package
263      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
264        (introduces another 3D-array for each passive tracer, but only if
265        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
266        gchemTendency is not needed because the timestep is done separately)
267      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
268      - GCHEM is now---more or less cleanly---separate from PTRACERS
269      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
270        so clear to me how that should be done in a general way.
271    o CFC: improve formatting of output in CFC_ATMOS
272    o PTRACERS:
273      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
274        that ALL experiments with ptracers enable can be checked. This makes
275        GCHEM_MONITOR obsolete.
276      - include a runtime parameter PTRACERS_monitorFreq that defaults to
277        monitorFreq
278      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
279    o add PTRACERS (PTR0[1-5]) to testreport output
280    o exf_check_range:
281      * default changed to .TRUE.
282      * will check values for niter0 if debLevA, every timestep if debLevB
283      * STOP in exf_check_range if 'out of range'
284      * range chosen generous to allow for potential extema
285      TBD: a version with stricter range
286           permitted range would be runtime parameters
287    o GMredi:
288      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
289      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
290      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
291    o GCHEM:
292      - move call to GCHEM_FORCING_SEP, so that it is now called before
293        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
294      - introduced a useGCHEM runtime flag and applied it everywhere.
295      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
296        this flag is now only visible within GCHEM-pkg routines.
297      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
298        be replaced by a 3D array that is computed before thermodynamics; for
299        this, the tracer ID iTracer had to be included into the parameter list
300        of ptracers_forcing
301      - set up forward_step to call gchem_forcing, that will replace
302        gchem_forcing_int in ptracers_forcing
303      - cleaning up
304    o small cleaning of exch2: remove files that are also in eesupp/src
305    
306    checkpoint56
307    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
308    o mnc: cleanup "full" files--fixes out-of-memory problem
309    o ECCO-GODAE
310      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
311      * fully merged and updated from SIO code
312        windstress sign change affects
313        - exf_inscal_[u/v]stress
314        - sign of xx_tau[u/v] adjustments
315        - signs in cost_scat
316      * ctrl_get_gen: avoid update of tau[u/v] for first few days
317      * natl_box_adjoint updated and compressed
318      * 2-level checkpoint switch added
319        (tested in EXP. 1 of natl_box_adjoint)
320      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
321    o SVD
322      * first complete, non-hacked version for SVD calculations
323      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
324        performed via direct access files admtlm_vector.it????
325        (via ctrl_[un]pack)
326      * optimcycle is used for ARPACK iteration counter
327        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
328      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
329        and add linear transforms where necessary
330      * controls are initial/final SST, SSS (can be extended; need to check
331        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
332    o mdsio: filename info to both stderr, stdout
333    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
334      from sign change
335    
336    checkpoint55j_post
337    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
338      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
339    o add consistent build directories and .cvsignore files to verification
340    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
341    o make all subroutines 30 or less characters in length for certain older
342      compilers to work (a thorough search only turns up two routines in
343      pkg/ptracers)
344    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
345      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
346    
347    checkpoint55i_post
348    o change arrays for total vertical diffusivity (2.D if explicit,
349      3.D if implicit) ; each ptracer uses its own background value.
350    o added mnc/NetCDF output capability to ocn_compon_interf
351      - added bits to verification/cpl_aim+ocn so that it can run on
352        ITRDA and other clusters without the mpirun "-wd" option
353    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
354      configuration
355    o give MNC the ability to create additional files rather than
356      exceeding a specified file size limit "MNC_MAX_FILESIZE"
357      - the default is just less than 2GB which is a practical limit
358        on many systems
359    o Compute the non-local term using either KPP vertical diffusivity (=default)
360       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
361    
362    checkpoint55h_post
363    o add verification test "vermix"
364    o remove all the *_ioinc flags and replace with the single global
365      outputTypesInclusive flag
366    o allow to set a vertical profile of vertical diffusivity for T & S
367    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
368    o useMNC moved from data.mnc to data.pkg
369    
370    checkpoint55g_post
371    o Renaming carbon AD experiments to comply with testreport conventions
372    o Updating adjoint of Held-Suarez hs94.1x64x5
373    o Fixing directives for non-ECCO forward_step, after ECCO directives
374      have been fixed to avoid recomp. of do_oceanic_phys
375      Works well for global_ocean.90x40x15,
376      but recomp. issue remains for carbon
377    o Updating adjoint output for natl_box_adjoint after
378      pkg/ecco has been modified (see taga c55d_post)
379    
380    checkpoint55f_post
381    o rename to timeave_init_fixed
382    
383    checkpoint55e_post
384    o some delicate re-shuffle of store directives to avoid one
385      extra call of do_oceanic_physics
386      affects ecco_the_main_loop.F, do_oceanic_physics.F
387      checkpoint_lev1_directives.h
388    o NB: this may break global_ocean adjoint temporarily,
389      but it is clear how to fix it. Will do later, need this now.
390    
391    checkpoint55d_post
392    o ECCO specific cost function terms (up-to-date with 1x1 runs)
393    o ecco_cost_weights is modified to 1x1 runs
394    o modifs to allow observations to be read in as
395      single file or yearly files
396    o enable to read exf forcing fields as either
397      single file or yearly files (flag useExfYearlyFields)
398    checkpoint55d_pre
399    
400    o switch between 2-level and 3-level checkpointing
401    o add ability of MNC to write local and "partial" (eg. 2D slices where
402      the full 3D field is never actually stored) arrays to NetCDF files
403      with the correct (that is, the complete multi-dimensional) set of
404      array indicies
405      - used in mom_vecinv() to write the diagFreq output
406      - tested (demonstrated) in verification/aim.5l_cs
407    o further mnc-ification
408      - add verification/lab_sea to the list with mnc setups
409      - fix undefined mnc v-names in cd_code
410      - add kpp to mnc output (both snapshot and timeave)
411    o non-hydrostatic code
412      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
413        in calc_gw.F
414      - defaults to viscAh
415      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
416        friction or Leith) in non-hydrostatic mode, as long as there is
417        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
418    o pkg/cost
419      extend simple cost functions to treat time mean quantities
420      (T,U,V) via cost_accumulate_state from cost_tile
421    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
422        be 2 times larger than the minimum size the advection scheme requires.
423        now get a perfect conservation of salt in advect_cs test-exp (updated)
424    o GGL90 (Gaspar's TKE mixed layer)
425      - add horizontal diffusion of TKE, requires exchanges in
426        do_fields_blocking_exchanges, horizontal diffusivity is zero by
427        default. In OPA there is no horizontal diffusion of TKE but the
428        mixing coefficients are computed from a horizontal average of TKE of
429        6 points or so. I think that diffusion has a little more physical
430        justification.
431      - clean up ggl90_calc in the hope of reducing memory usage (this hope
432        was in vain)
433      - mask tke-variable in ggl90_init
434    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
435    o fix biharmonic diffusion on CS-grid.
436    o more obcs stuff
437      - added obcs_external_fields_load as an alternative to the EXF-pkg option
438        for reading boundary values. This routine is called from
439        obcs_prescribe_read
440      - updated obcs_check
441      - changed sponge layer relaxation parameter units for days to seconds
442      - turned off sponge layer by default
443      - changed argument list of OBCS_CALC to myTime+deltaTclock
444      - fixed about 35 bugs in obcs_external_fields_load
445    
446    checkpoint55c_post
447    o obcs stuff
448      - new runtime flags useOBCSprescribe, useOBCSbalance
449      - re-arranged obcs_calc
450      - moved exf_getobcs to obcs_prescibe_read
451        obcs_prescibe_read is called after ORLANSKI stuff
452        and independent of it (executable can contain all).
453      - updated obcs_check
454      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
455        These may be necessary only if tangential velocities are
456        prescribed at OB, not sure, needs testing.
457    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
458      which simplifies the calls and passes the ifc check-bounds test
459    
460    checkpoint55b_post
461    o add a 2D scalar, Z location, exchange_2 routine.
462    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
463      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
464      affects advect_cs results (for the wrong reason): update output.txt
465    o use a more standard discretization for biharmonic viscosity ;
466     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
467      affects results of dome set-up: update output.txt
468    o fix gad_advection.F (CubedSphere part), back to version 1.23
469    o fix bug in mom_vi_del2uv.F (CubedSphere part).
470    
471    checkpoint55a_post
472    o merged code to
473      * prescribe/read time-dependent open boundaries
474        (works in conjunction with exf, cal)
475      * sponge layer code for open boundaries
476      * each boundary N/S/E/W now has its own CPP option
477        (healthy for the adjoint)
478    
479    checkpoint55
480    o up-to-date adjoint of previous breaks
481      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
482      - global_ocean_ebm: adjoint still needs fix (TLM ok)
483      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
484      - carbon: * remove tr1-related adjoint verification
485                * add ptracer as control variable
486    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
487      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
488    
489    checkpoint54f_post
490    o in verification/carbin/ remove experiment related to
491      ALLOW_PASSIVE_TRACER (array tr1 etc)
492      code_ad/ input_ad/ results_ad
493    
494    o add two new packages
495      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
496        + subject to optimization (memory)
497      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
498        + subject to reordering (many GOTOs in the original code)
499        + so far opps is called for every (i,j) point, and then operates in
500          the vertical; one may want to reorder the scheme in order operate in
501          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
502          fields)
503    o overhaul of IO so that we now have flags for MDSIO and/or MNC
504      - all verification tests compile and run with linux_ia32_g77
505      - defaults are compatible with current input files--nothing
506        should change if you were not previously using MNC
507      - MNC output has been added in numerous places (eg. timeave)
508        but there are still a few writes not yet do-able with MNC
509        (this is in progress)
510      - flags now allow for either/or/both use of MDSIO and MNC and
511        documentation will soon follow
512      - numerous small formatting cleanups for ProTeX
513    o add version info (via BUILD_INFO.h) to MNC and stdout
514    
515    checkpoint54e_post
516    o add two new packages
517      - pp81 (Packanowski and Philander, 1981), Richardson number and
518        stratification dependent mixing
519      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
520      - these scheme operate in a similar manner as KPP (without ghat, of
521        course), however there is only one diffusivity that is used for both
522        temperature and salinity (and passive tracers)ç
523    o add offline package
524    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
525      provided by Stephanie Dutkiewicz
526    o genmake2: add ability to search for C compilers and cleanup test output
527      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
528    
529    checkpoint54d_post
530    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
531    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
532      leading to additional shift by 5 days each year of integration
533       (i.e. leading to considerable offset over the years)
534    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
535    o start with no AB and no initial filtering (staggerTimeStep):
536      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
537    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
538      (external loading & cpl import/export stay in forward_step.F)
539    o update coupling interface to work with new staggerTimeStep
540    o change MDSIO ptracers_pickup.
541    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
542    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
543    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
544    
545    checkpoint54c_post
546    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
547      this affects (truncation error) output.txt of test-exp:
548       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
549    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
550    o change Qnet to always be the net heat flux, (+upward).
551      affects (truncation error) output of natl_box exp.: updated
552    o define the max number of passive tracers in PTRACERS_SIZE.h
553    o start to test mnc routinely in exp0
554    o add sea-ice loading (sIceLoad) as a new forcing field.
555    
556    checkpoint54b_post
557    o add testreport "-j JOBS" option for parallel builds (tested and pretty
558       impressive on Altix and Opteron systems)
559    o diagnostics can now write NetCDF files through the mnc package
560    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
561    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
562    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
563      affects (truncation error) output of lab_sea & natl_box exp.: updated
564    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
565    
566    checkpoint54a_post
567    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
568    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
569    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
570    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
571      + internal_wave (shift in writing cg2d_ini_res)
572    checkpoint54a_pre
573    
574    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
575      - modified verification/lab_sea and natl_box_adjoint accordingly
576    
577    checkpoint54
578    checkpoint53g_post
579    o prepare splitting of thermodynamics: store convect.counter in common block
580    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
581      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
582    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
583    o new parameter "nShapS": allow to treat differently S from T (nShapT)
584    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
585    o restore adjointability
586    
587    checkpoint53f_post
588    o modifications that affect AIM experiment results (update output.txt):
589      - no advection of S at top interface Nr (pkg/generic_advdiff)
590      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
591    o AIM pkg:
592      - include stability function into surf.Flux derivative relative to Tsurf
593      - calculate clear-sky radiation & surface temp. change (for diagnostics)
594    
595    checkpoint53e_post
596    o merged cylindrical coord configuration
597    o added rotating_tank experiment
598    checkpoint53e_pre
599    
600    checkpoint53d_post
601    o faulks upgraded: re-generate output.txt that have changed:
602       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
603    o Added Bryan and Lewis, 1979, vertical diffusivity profile
604    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
605    o added Sadourny discretization of Coriolis
606      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
607      - re-enabled use of omega3 (useAbsVorticity)
608    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
609      vector-invariant equations
610      - note: does *NOT* yet use same variable visc. for no-slip BC's.
611    o recoded the lateral boundary conditions for non-hydrostatic w, this time
612      hopefully without new bugs
613      - still to do: biharmonic friction for non-hydrostatic w
614    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
615    o regenerated output for global_ocean_ebm (using -ieee)
616    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
617      of mom_common/
618      - simple re-arrangement of instructions within computing loop
619    checkpoint53d_pre
620    
621    checkpoint53c_post
622    o new version of coupler for AIM+thSIce and Ocean models
623     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
624     - land: change Evaporation of snow
625     - aim with thSIce: fix bug in snow-precip.
626    o changes to calc_gw.F
627     - bug fix for w^2 term near the bottom boundary
628     - (hopefully) improve the lateral slip boundary condtions for use with
629        partial/looped cells
630      - because the bug fix changes two verification experiments anyway (exp5
631        and plume on slope), change the lateral boundary condition from half slip
632        to the value of no_slip_sides
633    o ebm package wasnt quite up to the parallel task. Fixed that.
634    o Adjoint of EBM package + verification
635      * TLM OK
636      * ADM not sufficient accuracy yet (needs further testing)
637    
638    checkpoint53b_post
639    o Commiting new energy balance model to repository
640      * package is pkg/ebm
641      * verif. is verification/global_ocean_ebm
642      * references are in ebm_driver.F
643    C      * X. Wang, P. Stone and J. Marotzke, 1999:
644    C        Global thermohaline circulation. Part I:
645    C        Sensitivity to atmospheric moisture transport.
646    C        J. Climate 12(1), 71-82
647    C      * X. Wang, P. Stone and J. Marotzke, 1999:
648    C        Global thermohaline circulation. Part II:
649    C        Sensitivity with interactive transport.
650    C        J. Climate 12(1), 83-91
651    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
652    C        Destabilization of the thermohaline circulation
653    C        by atmospheric eddy transports.
654    C        J. Climate 7(12), 1870-1882
655    o Will need long integration testing.
656    checkpoint53b_pre
657    
658    o created pkg/mom_common in preparation for variable viscosity code
659    o renamed and split ini_mnc_io
660    o pkg/land: only liquid water can diffuse or run-off
661    o AIM using land: soil wetness availability account for snow
662    o added printMapIncludesZeros to EEPARMS namelist
663    
664    checkpoint53a_post
665    o restore TAMC compatiility for exf_constants.h
666      (no usage of _d in .h)
667    o Additional storing in KPP in an attempt to fix
668      TAMC problem with adjoint of KPP code.
669      (no success...)
670      Identical code works fine with TAF.
671    o Fixed verification/natl_box_adjoint experiments.
672      Initial conditions for Experiments 4 and 5 are now
673      set to "SEAICE_initialHEFF=0", which is more reasonable,
674      and hence gives results closer to that of Experiment 2.
675      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
676    
677    checkpoint53
678    o stable checkpoint with up to date adjoint
679      TLM tests only run for 1st grdchk at the moment. Its unclear if
680      this is a code problem or a problem with resetting code for g_
681      variables that is being autogenerated wrong.
682      Otherwise:
683       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
684       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
685         are both still in chaos following their security messes.
686    
687    checkpoint52n_post
688    o various build (mostly genmake2) changes including:
689      - ability to build/run more easily within Cygwin and MacOS X
690      - more complicated Makefiles with a stronger dependence on Gnu Make
691    o pkg/seaice modifications
692      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
693        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
694        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
695      - changed proxy for geostrophic velocity and updated
696        verification/lab_sea/results/* accordingly
697      - removed ADI dynamic solver from pkg/seaice
698      - replaced all occurrences of 1/CSTICE or 1/CSUICE
699        they caused a segmentation fault under certain circumstances
700      - removed unused field WATR
701    o bug fix in exf-package:
702      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
703         now reflect that.
704    o small fixes in the cal-package:
705      - set reference date to first of January for the 'model'-calendar
706      - failing of cal_CheckDate in cal_FullDate now actually results in a
707        warning
708    o small modifications in exf-package to increase flexibility:
709      - change climtempfreeze from a constant to a runtime parameter that
710        is specified in data.exf_clim (default = -1.9)
711      - introduce runtime parameter windstressmax (default = 2.0) that is
712        specified in data.exf
713    o fix in pkg/thsice:
714      - update Evap (Tsf changes) to be consistent with Latent heat flux
715      - maintain snow precipitation unchanged (even if Tsf >=0).
716     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
717    
718    checkpoint52m_post
719    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
720      this does not change any of the results, because myIter=0 in swfrac always
721      lead to jwtype=2 (the default anyway), but the call makes little sense
722      as a default
723    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
724    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
725      atmospheric model (AIM) to use it ; add a "slab ocean" component.
726    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
727    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
728    o extending useSingleCpuIO option to work with new exch2 I/O format
729      - old-style, missing-tile I/O is still accessible by defining CPP
730        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
731    o monitor package can write to NetCDF files and/or STDOUT
732    o fix re-definition bug in MNC_GRID_INIT_ALL()
733    o doc/api_reference added
734      - a framework for building an API Reference Manual using all
735        the "protex" comments embedded in the code
736      - see pkg/generic_advdiff, pkg/mnc for examples
737    o MNC:
738      - make myThid the last argument for all subroutines
739      - new default for the grid files: NO halos
740      - add useMNC and other run-time flags
741      - separate per-file-group handling of the unlimited dimension
742      - early initialization of MNC w/ flags read at the eeboot stage
743        and lookup tables set in initialize_fixed
744      - write all MNC output to a freshly-created directory
745    o thermodynamics sea-ice (thsice) is now tested with testreport.
746    o test exp. advect_cs: use the standard cs32 grid ; update output.
747    o Added functionality to grdchk:
748      pick global i,j,k position (or nearest wet) where to perform check.
749    
750    checkpoint52l_post
751    o new land formulation:
752      a) use ground enthalpy as prognostic variable to ensure exact
753         energy conservation.
754      b) account for water temperature and for latent heat of freezing
755         in all processes (rain, run-off, ground storage)
756      c) compute surface and ground temperature implicitly.
757    o aim_v23 modification for new land model:
758      a) Treat separately land / ocean / sea-ice surface fluxes
759         to allow implicit computation of land & sea-ice surface temp.
760      b) add snow precipitation.
761    checkpoint52l_pre
762    
763    o fix problem (when 1 tile is empty) in min/max monitor.
764    o fix bug in timeAve (u,vZetatave in common block)
765    o no restoring terms under ice for pkg/seaice
766    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
767    o bug fix for pkg/seaice pickups
768    o change MNC call locations and add coordinate attributes
769    o mask vorticity at the corner ; affects global_ocean.cs output
770    o fix ini_curvilinear_grid ; test CS experiments with mpi
771    o aim.5l_cs: modify sea-ice fraction input file ; update output
772    o exf: Adding simple range check routine for exf fields after read
773    
774    checkpoint52k_post
775    o removed top-level directory "diags"
776      - we migrated these functions to pkg/timeave a long time ago
777    o fixed bug introduced in pkg/monitor
778    o accuracy ctrlprec = 32 insuffient for gradient checks using
779      averaged fields (I/O via cost_averages)
780      -> use ctrl.h in active_file*.F to control I/O precision.
781    o paramter list of CALL ADTHE_MAIN_LOOP
782    o added initial do_the_model_io to ecco
783    o set all ...Freq to zero after cost_final
784      taveFreq, dumpFreq, pChkptFreq
785    o MAIN and ECCO differentiability restored
786    
787    checkpoint52j_post
788    o fix nchklev in tamc.h for global_ocean...
789    o Bringing flow and store directives up-to-date
790    o Really weird thing!
791      call do_the_model_io from the_main_loop with parameters
792      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
793      TAF places a faulty re-call of initialise_varia
794      after cost_final call which should not be there!
795    checkpoint52j_pre
796    
797    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
798      error messages
799    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
800    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
801      debug output
802    o modfied mdsio_writefield.F to handle non-global files under exch2
803    o update AIM Cubed-Sphere exp (aim.5l_cs):
804      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
805    o update AIM Equatorial Channel exp:
806      use standard aim_v23 pkg and change the SST fields to be more realistic.
807    o globalFile now works with exch2
808    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
809      mon_vort3.F to make exch2 friendly with >1 tile per cube face
810    o limit timeave output for hi-res integrations
811    
812    checkpoint52i_post
813    o removed CPP_EEOPTIONS.h from verification/*/code
814    o updated the tiling for global_ocean_pressure
815    checkpoint52i_pre
816    
817    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
818      the old pkg/aim).
819    
820    checkpoint52h_pre
821    o shortened offending lines in exch2_send_rx?.template
822    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
823    o genmake2: add build & execute test for NetCDF code
824    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
825      old grid files, moved CPP_EEMACROS.h to pkg/exch2
826    o added useSingleCPUIO flag to monitor.F and mon_out.F
827    o added temporary hack for sea-ice dynamics on the cube:
828      metric terms are ignored and it is assumed that
829      there is no sea-ice on cube faces 1, 2, 4, and 5.
830    
831    checkpoint52f_post
832    o added exch2 cube routines to pkg/exch2
833    o modified hs94.cs-32x32x5 to use it
834    o added new grid files to hs94.cs-32x32x5
835    checkpoint52f_pre
836    
837    checkpoint52e_post
838    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
839      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
840    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
841      to work with implicit vertical advection and AB ;
842    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
843    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
844     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
845    checkpoint52e_pre
846    
847    o fix bug in impldiff when Nr=1 or Nr=2.
848    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
849    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
850    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
851      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
852    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
853    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
854    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
855    
856    checkpoint52d_post
857    o re-tiled many expts to allow comparison in multi-processor mode
858      - updated output accordingly
859      - changed hs94.128x64x5 to use intial T from file rather than use the
860        random number generator
861    o add infrastructure in model routines for fizhi and gridalt packages
862    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
863    o changes to permit hi-res, cubed-sphere, configuration
864      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
865      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
866      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
867        of surface winds for the cube
868      (A verification experiment, based on global_ocean.cs32x15, but with
869       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
870       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
871       complete with example surface forcing files and matlab scripts to look
872       at the output and compare it with that of global_ocean.cs32x15.)
873    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
874       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
875       to conform to the common rule.
876    o check-in the first version of the coupler + interfaces for multi-components
877       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
878       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
879       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
880       - ocean and atmos. share the same horizontal grid (no interpolation).
881       - exchanges between component and coupler is done in forward_step
882    o new verification experiment, cpl_aim+ocn:
883       coupled ocean - AIM atmosphere on cs32 grid.
884    
885    checkpoint52d_pre
886    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
887    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
888    
889    checkpoint52c_post
890    o Fixing OPTIONS files for use of exf:
891      - ALLOW_ECCO not needed
892      - ECCO_CPPOPTIONS.h should not be included from
893        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
894        as has been the case in the past
895      - All cal/exf related options are currently set in
896        single header file. Should remain so until we
897        agree on a consistent new policy.
898    o Removed all CPP options for cal package.
899      cal has no more CPP options.
900    o modified STOREs in GAD_ADVECTION
901    o corrected key comp. for passkey
902    
903    checkpoint52b_post
904    o new version: "thsice" of thermodynamic sea-ice pkg:
905     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
906     - modify fluxes but do not change theta directly;
907     - light cleaning of bulk_force pkg (still needed with thsice).
908     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
909       + output_thsice.txt to test thsice & bulk_force pkgs.
910    o put back grid & coriolis monitor output.
911    checkpoint52b_pre
912    
913    o call "do_the_model_io" at the beginning (=> dump initial state)
914    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
915    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
916      (need info on NUMBER_OF_PTRACERS)
917    o missing PTRACERS headers in some routines
918    o default tamc.h in pkg/autodiff supposed to crash
919      to ensure proper customization
920    
921    checkpoint52a_post
922    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
923      - moved surfaceTendencyTice from pkg/seaice to main code
924      - subroutine FREEZE_SURFACE now limits only surface temperature
925        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
926        => new output.txt for global_ocean.cs32x15 & global_with_exf
927      - keep the old version of FREEZE for backward compatibility;
928        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
929      - corresponding modifs for TAF directives
930    o added surface flux output variables to TIMEAVE_STATVARS
931    o time-averaged output for pkg/ptracers
932    o fix problem with ECCO-related divided adjoint
933      snapshot file was missing some ad-variables,
934      but no warning issued by TAF
935    
936    checkpoint52a_pre
937    o some bug fixes for #undef REAL4_IS_SLOW
938    
939    checkpoint52 = ecco_c52_e35
940    o after testing adjoints of checkpoint51u_post
941    
942    checkpoint51u_post
943    o this is the post-merge tag of the ecco-branch
944      (needs another clean checkout and re-testing)
945    o various natl_box_adjoint configs and results
946      but no input fields
947    o obcs adjoint not yet merged!
948    o adding ECCO global 1x1 and 2x2 degree configs
949    o updated/extended some store directives for seaice
950    o pkg/ecco now containes ecco-specific part of cost function
951    o top level routines the_main_loop, forward_step
952      supersede those in model/src/
953      previous input data.cost now in data.ecco
954      (new namelist ecco_cost_nml)
955    o in ctrl/ cleaned some cross-dependencies and updated CPP options
956    
957    checkpoint51t_post
958    o this is the pre-merge tag of the ecco-branch
959    
960    checkpoint51s_post
961    o cleanup: removed various obsolete #define-s
962    o pkg/grdchk
963      - renamed 'ph-grd 3' to 'grad-res'
964      - merged from ecco-branch
965        (remaining bug fixes for obcs gradient checks)
966      - additional high-precision output for testreport
967        (grep for 'precision_grdchk_result')
968    
969    checkpoint51r_post
970    o cleaned up or removed CPP_OPTIONS.h files
971    o updated results for some of the tests to reflect the new
972      optfiles (-ieee: -O0 instead of -O3)
973    
974    checkpoint51q_post
975    o cd_code:
976      - moved cd_scheme.F -> cd_code_scheme.F
977      - separate read_checkpoint from cd_code_ini_vars.F
978      - separated cd_code part from write_checkpoint
979      - updated AD_SOURCE, generated .flow
980      - added CD_CODE_VARS.h to the_main_loop
981      - Moving cd_code specific store dir.s to pkg/cd_code
982    o ctrl package totally restructured
983      - pack/unpack now optional and decoupled from
984        xx_/adxx_ I/O
985      - ctrl_pack/unpack cleaned
986        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
987      - confined inclusion of AD_CONFIG.h to where necessary.
988    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
989    
990    checkpoint51p_post
991    o create initial cd_code package
992      - WARNING: the initialization of fields within packages
993        is broken because INI_FIELDS (where READ_CHECKPOINT is
994        called) is called *before* PACKAGES_INIT_VARIABLES.
995        This seems to be backwards since
996        1) its important to initially zero the entire field including
997           the "halo" region
998        2) zeroing needs to be done *before* reading pickup info
999           and the pickup call might or might not happen in any
1000           particular run
1001      - this needs an overhaul for R2
1002    o cleanup verification/*/code/GMREDI_OPTIONS.h
1003    o cleanup testreport
1004    
1005    checkpoint51o_post
1006    o bringing AD-related verif's up to date with genmake2
1007      - carbon/
1008      - global_ocean.90x40x15/
1009      - hs.94.1x64x5/
1010      - (front_relax/ )
1011    o (more) consistent directory structure for AD-related verif.'s
1012    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1013    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1014    o bug fix in find_alpha.F for MDJWF:
1015      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1016        change rho -> rho-rhoConst
1017      - replace call find_rho to find_rhonum
1018    o initialisation of rFlx extended to full array (required by TAF)
1019      and shifted to thermodynamics
1020    o removed PTRACERS.h in ptracers routine
1021    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1022    o Correcting initialisations for fVerU, fVerV.
1023    o helping TAF to recognize dependency on kUp for
1024      fVerU, fVerV
1025    o Replacing delZ by delR in pkg/ctrl/
1026    checkpoint51o_pre
1027    
1028    o undid all of cp51 pending some cleanups and discussion
1029    o added the [#include "AD_CONFIG.h"] statement to all files that need
1030       it for adjoint/tl #defines
1031     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1032     o removed tools/genmake since it no longer works
1033    
1034    checkpoint51n_post
1035    o modifications to make FREEZE flux visible to pkg/kpp
1036      - moved surfaceTendencyTice from pkg/seaice to main code
1037      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1038      - subroutine FREEZE now limits only surface temperature
1039        (this means new output.txt for global_ocean.90x40x15,
1040         global_ocean.cs32x15, and global_with_exf)
1041    o added surface flux output variables to TIMEAVE_STATVARS
1042    
1043    checkpoint51n_pre
1044    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1045    o added [#include "AD_CONFIG.h"] to all files that use the following
1046      defines:
1047      - ALLOW_ADJOINT_RUN
1048      - ALLOW_TANGENTLINEAR_RUN
1049      - ALLOW_ECCO_OPTIMIZATION
1050    
1051    checkpoint51m_post
1052    o incorporating changes to get TAMC/TAF working in genmake2
1053      - added new TAMC/TAF targets to the Makefile
1054      - various cleanups related to package handling
1055      - these changes should have no impact on the forward model
1056    
1057    checkpoint51l_post
1058    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1059     - faster algorithm for cal_addtime.F
1060     - higher precision arithmetic, where needed
1061     - pkg/exf *startdate variables changed from calendar date to
1062       model integration time
1063    
1064    checkpoint51l_pre
1065    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1066    o enable to apply restoring on S & T only in a latitude band.
1067    o update output (external_forcing_surf modif. change truncation errors)
1068       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1069    
1070    checkpoint51k_post
1071    o change default to: useNHMTerms=.FALSE.
1072     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1073       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1074     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1075        exp1, ideal_2D_oce
1076     - change data file of oceanic exp (leave the results unchanged for now)
1077       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1078    o set gravitySign automatically according to the vertical coordinate used
1079      (and change sign: back to "logical" value: +1 when R increases downward)
1080    o added an include barrier to the default CPP_OPTIONS.h and
1081      removed the #include "PACKAGES_CONFIG.h" from it
1082    o fix a bug in mom_fluxform (from chk51j_post)
1083    
1084    checkpoint51j_post
1085    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1086    o adjusted some flow directives (dynamics, thermodynamics)
1087    o added cubed-sphere case to test cost function
1088    o heckpoint_lev?_directives.h now include
1089      pkg-specific directives, whenever those are enabled.
1090    o Moving pkg-specific flow directives to corresponding pkg
1091      Moving pkg-specific differentiation list to corresponding pkg
1092      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1093      ---> conventions are
1094           - pkg_ad.flow
1095           - pkg_ad_diff.list
1096           - pkg_ad_check_lev?_dir.h
1097    
1098    checkpoint51i_post
1099    o merge of the branch-genmake2
1100      - knowingly breaks the older genmake
1101      - automatic generation of all ALLOW_${PKG_NAME} defines
1102      - new testreport supersedes older testscript
1103    o large number of package inclusion and header cleanups
1104    checkpoint51i_pre
1105    
1106    o new output for adjoin of global ocean vector invariant
1107    o fix for checkpoint of thermodynamic seaice and bulk_force
1108    o Steph gchem various cleanups
1109    
1110    checkpoint 51h_pre
1111    o fixed some single quotes
1112    o modify gchem pkg to be more versatile
1113    o modifications to clean up dic pkg
1114    o add pkg/cfc
1115    
1116    checkpoint51g_post
1117    o provide links for ARPACK and ADM*TLM
1118    o start removing verification/vero/
1119    o update AD-related stuff
1120      (in particular some IF-statements in model/src/ routines)
1121    o adding to verification/global_ocean.90x40x15/ adjoint of
1122      vector invariant setup
1123    
1124    checkpoint51f_post
1125    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1126    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1127      of tracer Green's fucntions for ocean inversion project.
1128    
1129    checkpoint51f_pre
1130    o Added on-the-fly spatial interpolation capability
1131        "USE_EXF_INTERPOLATION" to pkg/exf.
1132      - This is a temporary Cartesian-grid hack until
1133        the super-duper ESMF coupler becomes available.
1134      - See verification/global_with_exf/README for usage example.
1135      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1136        flags and modified pkg/seaice accordingly.
1137    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1138        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1139        non-local transport term.
1140    
1141    checkpoint51e_post
1142    o pkg/mom_vecinv:
1143      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1144      - add time-ave diagnostic of vorticity advection.
1145    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1146    o atmospheric geopotential: - include water vapor effect;
1147                                - use p^kappa in p* scaling.
1148    o land pkg: read initial state from files.
1149    o AIM : add stratospheric drag in the upper level
1150    
1151    checkpoint51d_post
1152    o change function ILNBLNK (=> last non-blank char.) to return zero
1153      (instead of the string length) when the string. char is empty
1154    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1155    o modif's to restore TAMC compatibility
1156      - avoid "_d" constructs in PARAMETER declarations
1157      - avoid interrupting lines by comment lines
1158    o Use cluster local disks for purely local I/O
1159      vs. globally visible disks needed for ctrl stuff
1160      (merged from ecco-branch)
1161      - new active_file_loc... and mdsio_..._loc routines
1162      - affected packages: autodiff, ctrl, grdchk, mdsio
1163    
1164    checkpoint51c_post
1165    o introducing integer flag debugLevel
1166      - debLevZero: suppress all output
1167      - debLevA: standard
1168      - debLevB: equivalent to current debugMode=.TRUE.
1169    o introducing pathname variable mdsioLocalDir for mdsio
1170      that can be specified at runtime
1171      (relevant for cluster I/O to local disk)
1172    `
1173    >>>checkpoint51b_post
1174    adjoint of ptracers
1175    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1176    o extended state in checkpoint_lev?, etc.
1177    o alternative ctrl/cost with tr1 or ptracer
1178    o new comlev1_bibj_ptracers
1179    o new ptracers.flow
1180    o made ptracers_forcing same as external_forcing_s
1181    o added verification for adjoint with ptracers
1182      - adm. grdchk fail so far
1183      - tlm. grdchk OK
1184      - checked tapelev/comlev recomputations: OK
1185    <<<checkpoint51b_pre
1186    
1187    checkpoint51a_post
1188    o added code for biogeochemistry package
1189      - new pkgs: dic, gchem
1190      - new subroutine in ptracers
1191    o modify code for biogeo packages
1192      - in model/src and pkg/ptracers
1193    
1194    checkpoint51
1195    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1196      - autodiff, ctrl, exf, grdchk, seaice
1197      kept separate packages
1198      - cost, ecco, obcs
1199    o updating verification/internal_wave, verification/lab_sea
1200      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1201    
1202    checkpoint50i_post
1203    o Preparing next differentiable checkpoint and sync
1204      of MAIN vs. ecco-branch
1205      - 1st step: this one is differentiable
1206      - 2nd step: next(! not this) checkpoint will have updated packages
1207                  from ecco-branch)
1208    
1209    checkpoint50h_post
1210    o new package "land": provide surface BC for AIM.
1211    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1212    o AIM: use true log-P extrapolation for near surface temp (= as in
1213        F.Molteni paper) ; update aim.5l_cs output.
1214    o New variable in PARM03 for more flexible pickups
1215    o somewhat cleaned package initialisation sequence for
1216      ctrl/ cost/ ecco/ in packages_... routines
1217    
1218    checkpoint50g_post
1219    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1220      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1221      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1222        made the default because of faster convergence than ADI
1223    
1224    checkpoint50f_post
1225    o exf totally restructured
1226      - replaced all exf_set_ routines by one generic exf_set_gen.F
1227        and made sure it's still differentiable
1228      - split exf_getffields.F into new exf_bulkformulae.F
1229      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1230      - updated adjoint/makefile and relevant verif. accordingly
1231    
1232    checkpoint50f_pre
1233     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1234          + change Evap over land. (update aim.5l_cs output)
1235     o added missing .cvsignores and made uniform across expts
1236     o changed configuration of tidal_basin_2d expt
1237     o added pkg/debug functions for tracing code in fatal crashes
1238     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1239     o new fn in pkg/monitor to stop model if solution grows too big
1240     o removed lots of single quotes from comments
1241    
1242    checkpoint50e_post
1243    o make KPP work with PTRACERS
1244     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1245       nearly a copy of kpp_transport_s
1246     - there is no analogue to SurfaceTendencyS, so I have to use
1247       gPtr(of the surface layer) instead
1248    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1249    checkpoint50e_pre
1250    
1251    checkpoint50d_post
1252    o change kpp output from multiple-record state files to single-record state
1253      files analogous to write_state.F
1254    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1255      analogous to the cg2d-related output.
1256    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1257      so that writing to internal file fn (with length 512) fails.
1258    checkpoint50d_pre
1259    
1260    checkpoint50c_post
1261    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1262    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1263    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1264    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1265    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1266    
1267    checkpoint50c_pre
1268    Merging from release1_p13:
1269    o bug fix for pkg/seaice dynamic solver
1270    o Added SEAICE_initialHEFF to pkg/seaice
1271    
1272    checkpoint50b_post
1273    o store u*,v* in gU,V instead of in guNm1,gvNm1
1274    o in order to put the momForcing out of the Adams-Bashforth:
1275      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1276      to timestep.F
1277    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1278    o re-generate output for highly sensitive test-exp:
1279       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1280    
1281    checkpoint50b_pre
1282    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1283    o corrected CPP option mismatch in exf_Bulk... functions for case
1284      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1285    
1286    checkpoint50a_post
1287    o Bug fix for merging between c50 and KPP.
1288      ikey was passed from thermodynamics to kpp_calc via
1289      common block rather than being recomputed in kpp_calc,
1290      in contradiction with new key itdkey.
1291      New key ikppkey created, and tamc.h headers updated.
1292    
1293    checkpoint50
1294    - 2nd step of merge with ecco-branch:
1295      merge changes in ecco-branch back into main trunk
1296    - bug fix in find_alpha
1297    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1298    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1299    - merged some sliced AD support routines
1300    
1301    checkpoint49
1302    merged from ecco-branch:
1303    o exf:
1304      - Enable initialisation of forcing fields to constant
1305        (runtime) values.
1306      - in exf_getffields.F
1307        Reduce i-/j-loop to interior domain, discarding overlaps.
1308        That also fixes wrong TAF-key computations for key_1, key_2
1309        with bulf formulae.
1310      - exf_init.F modify #ifdef for exf_init_evap
1311      - exf_getffieldrec.F, ctrl_getrec.F
1312        The following INT-usages are not safe:
1313          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1314          fldcount = int(fldsecs/fldperiod) + 1
1315        and were modified.
1316    o autodiff: checkpoint_lev...
1317      - updated storing for bulk formulae (some arrays were missing)
1318      - added state for seaice package
1319      - synchronized with main branch
1320    o DIVA:
1321      Modif.s in
1322      - the_main_loop.F
1323      - the_model_main.F
1324      and added cost_final_restore.F cost_final_store.F
1325      o With these changes, it is possible to fully separate
1326        the first forward run to compute the cost function (mdthe_main_loop)
1327        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1328        into separate model executions.
1329        This enables better tuning of DIVA to given queue sizes.
1330      o Loss of cost function value in consecutive DIVA runs is
1331        fixed by storing to 'costfinal' file.
1332      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1333        beginning/end of adjoint integration is accounted for.
1334      The current changes apply to TAF-1.4.26.
1335      TAF has one remaining bug, requiring one manual change
1336      (see MITgcm manual).
1337    o cal: synchronized between MAIN and ecco-branch
1338    
1339    checkpoint48i_post
1340    o Changes to restore differentiability of code w.r.t. previous tag
1341      (mostly adding new routines to make list and replacing
1342      pressure by totPhiHyd).
1343    o Updated and merged grdchk package
1344      - has both ADM and TLM checks
1345      - works for single- and multi-proc.
1346      - output cleaned
1347      - worked successfully for parallel DIVA
1348    o genmake:
1349      - Adding -platform=SP4
1350      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1351    o Modif. for DIVA:
1352      ctrl_unpack should not be called in intermediate DIVA interval.
1353      (similar thing would apply for active files such as
1354      tbar, sbar, psbar, which should not be reinitialised;
1355      only relevant for ecco-branch)
1356    
1357    checkpoint48h_post
1358    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1359    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1360    o Added SEAICE_initialHEFF to pkg/seaice
1361    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1362    
1363    checkpoint48g_post
1364    --- EOS:
1365    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1366      store total Potential in totPhyHyd for diagnostics & EOS.
1367    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1368    --- Pressure/geopotential gradient:
1369    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1370    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1371      ( changes results of global_ocean_pressure )
1372    o NLFS + z-coord.: add eta*Rho' contribution.
1373    o accurate phiHyd when using interface-W at the middle between 2 centers
1374     ( changes results of ideal_2D_oce )
1375    o includes r* 2nd term in potential gradient.
1376    
1377    checkpoint48f_post
1378    Merging from release1_p12:
1379    o Modifications for using pkg/exf with pkg/seaice
1380      - improved description of the various forcing configurations
1381      - added basic radiation bulk formulae to pkg/exf
1382      - units/sign fix for evap computation in exf_getffields.F
1383      - updated verification/global_with_exf/results/output.txt
1384    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1385      (SBO) core products, including oceanic mass, center-of-mass,
1386      angular, and bottom pressure (see pkg/sbo/README.sbo).
1387    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1388      to avoid negative values in shallow regions.
1389      - updated verification/natl_box/results/output.txt
1390      - updated verification/lab_sea/results/output.txt
1391    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1392    o Added useSingleCpuIO option (see PARAMS.h).
1393    o Updated useSingleCpuIO option in mdsio_writefield.F to
1394      work with multi-field files, e.g., for single-file pickup.
1395    o pkg/seaice:
1396      - bug fix in growth.F: QNET for no shortwave case
1397      - added HeffFile for specifying initial sea-ice thickness
1398      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1399    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1400      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1401    o pkg/seaice:
1402      - adjoint-friendly modifications
1403      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1404    
1405    checkpoint48e_post
1406    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1407    o dynamics: change definition of computational domain & adapt mom_fluxform
1408      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1409    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1410        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1411        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1412        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1413        inverted_barometer solid-body.cs-32x32x1
1414      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1415    
1416    checkpoint48d_post
1417    o in preparation for r*:
1418     a) use pre-computed gradient of hydrostatic potential:
1419        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1420     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1421        => affects results of glob_oce_pressure (different truncation error)  
1422      update output.txt of ideal_2D_oce & global_ocean_pressure
1423    
1424    checkpoint48d_pre
1425    o in preparation for r*:
1426      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1427      pass the 2 comp. of the grad. as arguments to momentum S/R.
1428      but for the moment, only used if it does not change the results.
1429    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1430    
1431    checkpoint48c_post
1432    Modifications in treatment of initial flux forcing controls
1433    to avoid extra storing of flux fields.
1434    
1435    checkpoint48c_pre
1436    o Added tidal_basin_2d experiment (currently 1D!)
1437    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1438    
1439    checkpoint48b_post
1440    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1441     (modification to pressure gradient not yet implemented)
1442    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1443      (for U & V) that are used for vertical advection of momentum.
1444    
1445    checkpoint48a_post
1446    o In preparation for r*, use temp. array to compute vertical transport
1447       in flux-form momentum pkg. => change results of few test-exp.
1448      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1449                        lab_sea, natl_box & plume_on_slope
1450    
1451    checkpoint48
1452    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1453    
1454    checkpoint47j_post
1455    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1456    o moved adexch from forward_step to addummy_in_stepping
1457    o added exch in ctrl_map_...
1458    o aveFreq.=0. at end of cost_final to avoid overwrite in
1459      reverse checkpointing loop
1460    o Yet more changes in gmredi:
1461      * adgmredi_calc_tensor
1462        avoiding all recomputation of gmredi_slope_limit
1463      * adgmredi_x/y/rtransport
1464        added flag for excessive storing to avoid recomp. of
1465        u/v/rtans, dTdx/y/z
1466        -> this is not really necessary and very memory-consuming
1467      * adgmredi_slope_psi:
1468        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1469      * gmredi_slope_limit
1470        re-activated full calculation of taperfct for case 'ac02'
1471    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1472    
1473    checkpoint47i_post
1474    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1475    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1476      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1477    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1478    o gmredi: fix few bugs.
1479    
1480    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1481    This will be a good checkpoint to plug into the ecco-branch.
1482    o few modif.'s to get latest version adjointed
1483      (mainly kick out code in ini_linear_phisurf)
1484    o modif's to run adjoint with exactConserv
1485    o case GM_BOLUS_ADVEC should be cleaned
1486      S/R gmredi_slope_psi should be cleaned
1487    o verification/carbon now has exactConserv=.TRUE.
1488    
1489    checkpoint47g_post
1490    o time-average AIM output: becomes independent from statvars time-average
1491      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1492    o After TAF bug fix:
1493      Tested adjoint of gmredi package.
1494      Tests were done with checkpoint47 rather than with latest
1495      checkpoint47f_post since the latter is broken for the adjoint
1496      verification/carbon/ contains both ADM and TLM gradient checks.
1497    Here they are, before they get changed/lost/stolen.
1498    Mostly modif.'s to fix numerical sensitivities.
1499    Gradient checks OK for
1500    - GM_taper_scheme:
1501      * clipping
1502      * ac02
1503      * linear
1504      * glw91
1505      * dm95
1506      * ldd97
1507    - GMREDI_OPTIONS:
1508      * GM_VISBECK_VARIABLE_K
1509      * GM_NON_UNITY_DIAGONAL
1510      * GM_EXTRA_DIAGONAL
1511      * GM_BOLUS_ADVEC
1512    in conjunction with data.gmredi parameters to be checked in
1513    in a few minutes under verification/carbon/code/
1514    
1515    checkpoint47f_post
1516    Merging from release1_p10:
1517    o modifications for using pkg/exf with pkg/seaice
1518      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1519        and SEAICE_EXTERNAL_FLUXES
1520      - pkg/exf CPP options EXF_READ_EVAP and
1521        EXF_NO_BULK_COMPUTATIONS
1522      - usage examples are Experiments 8 and 9 in
1523        verification/lab_sea/README
1524      - verification/lab_sea default experiment now uses
1525        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1526    
1527    checkpoint47e_post
1528    o created a tag prior to creating a branch
1529    
1530    checkpoint47d_post
1531    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1532      at the bottom boundary had an erroneous half slip boundary condition
1533    o added bottom drag and no slip boundary condition capabilities to
1534      oceanic pressure coordinates code
1535    o added new verification experiment global_ocean_pressure, this experiment is
1536      also described in the tutorial section of the manual
1537    checkpoint47d_pre
1538    
1539    checkpoint47c_post
1540    o Added a verification experiment for a global cubed-sphere ocean run
1541      -  verification/global_ocean.cubed32x32x30
1542      -  uses pkg/therm_seaice and pkg/bulk_forcing
1543    
1544    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1545    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1546      when using P-coordinate; only implemented for atmospheric config.
1547    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1548      NOTES: requires option NONLIN_FRSURF to be "#define".
1549    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1550    
1551    checkpoint47b_post
1552    Merging from release1_p9:
1553    o pkg/seaice
1554      - removed GOTO's and added taf directives
1555      - double precision constants to reduce the g77 (Linux)
1556        to F77 (SGI) differences reported in release1_p8
1557    o tools/genmake
1558      - added SGI options
1559    o verification/testscript
1560      - updated to that of checkpoint47a_post
1561    o verification/global_ocean.90x40x15/input/eedata
1562      - modified for SGI f77 compatibility
1563    o verification/lab_sea
1564      - added description of sea-ice model
1565      - added missing matlab routines
1566      - added test of thermodynamics parallelization
1567    
1568    checkpoint47a_post
1569    o new pkg: aim_v23
1570     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1571       for now, keep the same surface forcing as before.
1572     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1573     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1574     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1575    o add diagnostic of surface correction term in monitor output
1576    
1577    o bulk_force and therm_seaice
1578    - Two packages:  bulk_force (Bulk forcing)
1579      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1580    - Earlier integration from Stephaine Dutkiewicz
1581      and Patrick Heimbach.
1582    - Two ifdef statements for compile time,
1583       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1584    
1585    checkpoint47
1586    differentiable version of checkpoint46n_post
1587    o bug fix in quasihydrostaticterms
1588    o * "clean" adjoint code (in terms of extensive recomputations)
1589        can now be obtained for all GMREDI options (i.e. for
1590        - GM_VISBECK_VARIABLE_K
1591        - GM_NON_UNITY_DIAGONAL
1592        - GM_EXTRA_DIAGONAL
1593        - GM_BOLUS_ADVEC )
1594      * However, wrong gradient check problem remains unsolved.
1595      * New CPP options have been introduced for different
1596        tapering schemes
1597    o external_fields_load now part of differentiation list
1598    o pressure needs multiple storing;
1599      would be nice to have store_pressure at beginning or
1600      end of forward_step, e.g. by having phiHyd global (5-dim.)
1601      (NB: pressure is needed for certain cases in find_rho,
1602      which is also invoked through convective_adjustment).
1603    o recomputations in find_rho for cases
1604     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1605    o #define ATMOSPHERIC_LOADING should be differentiable
1606    o ini_forcing shifted to begining of initialise_varia
1607    o Incorporating QNVS line search routines into MITgcm
1608      (this is separate code, and therefore not under pkg)
1609      lsopt/, optim/
1610    o Updated verification/carbon/
1611      - #define GM_VISBECK_VARIABLE_K
1612      - GM_taper_scheme    = 'ldd97'    
1613    
1614    checkpoint46n_post
1615    Merging from release1_p8:
1616    o verification/natl_box:
1617      updating new external_fields_load routine
1618    o New package: pkg/seaice
1619      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1620      The sea-ice code is based on Hibler (1979-1980).
1621      Two sea-ice dynamic solvers, ADI and LSR, are included.
1622      In addition to computing prognostic sea-ice variables and diagnosing
1623      the forcing/external data fields that drive the ocean model,
1624      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1625      The implied surface heat flux is then stored in variable
1626      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1627      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1628      non-local transport term.  Because this call precedes model
1629      thermodynamics, temperature under sea-ice may not be "exactly" at
1630      the freezing point by the time theta is dumped or time-averaged.
1631      N.B.: fairly large differences in accuracy occur across
1632            different platforms/compilers; comparison between
1633            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1634            generated output gives:
1635       T           S           U           V
1636      C D M    c        m  s        m  s        m  s        m  s
1637      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1638      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1639      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1640    
1641      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1642    o GAD:
1643      - generated new common blocks to account for call of
1644        same gad routines with differing traceridentities
1645        (needed to modify tracerIdentity indices in GAD.h)
1646      - generated separate common blocks for case useCubedSphereExchange
1647        (Department of Futurology)
1648      - parameter lists to gmredi_?transport: added tracerIdentity
1649      - added new key indices to tamc.h
1650    o external_fields_load:
1651      - added this routine to TAF list
1652      - needed to make some common blocks global and additional storing
1653        along the same lines as exf package (checkpoint_lev?_directives.h)
1654    o exf:
1655      updated external forcing package
1656      - bug fixes carried over from ecco-branch
1657        (missing OBCS_OPTIONS.h in two routines)
1658      - enable easy to use "no forcing".
1659      - added exf I/O for atmospheric loading
1660      - added exf I/O for runoff data
1661      - transfered scaling between exf <-> MITgcm to exf namelist
1662    o Adding new verification experiment global_with_exf.
1663      This verification experiment is almost identical to the
1664      global_ocean.90x40x15 experiment, except that it uses
1665      the exf (and cal) package instead of the
1666      external_fields_load routine (cf README file).
1667    
1668    checkpoint46m_post
1669    o modified testscript to return -- when there are no lines of "%MON" output
1670    o added new flag "quasiHydrostatic" for QH mode
1671      and new routine quasihydrostaticterms()
1672    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1673      New routine: mom_u_coriolis_nh()
1674    o fixed sign of non-hydrostatic metric terms in u and v equations.
1675      Depend on correct sign of gravitySign.
1676    o added work.pc* to .cvsignore in aim directories using ifc
1677    o introduced flag for controllin non-hydrostatic metric terms
1678    o removed gravitySign from PARM04
1679    o switched to g77/ifc from pgf77 in aim experiments
1680    
1681    checkpoint46l_post
1682    o made convective adjustment work with pressure coordinates:
1683     - changed the direction of k-loop in convective_adjustment.F for the
1684       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1685     - adjusted the reference pressure k-index in convective_adjustment.F
1686     - adjusted the convection condition in convect.F (in analogy to
1687       calc_ivdc.F)
1688     - convective_adjustment no longer computes anything on the halos
1689     - removed the warnings about negative salinity from find_rho.F and
1690       find_alpha.F; instead the new routine look_for_neg_salinity, called
1691       at the beginning of find_rho, find_alpha, and find_beta, does a
1692       check of the entire slice, if CPP-option
1693       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1694    checkpoint46l_pre
1695    
1696    checkpoint46k_post
1697    o fixed the verification/global_ocean.90x40x15 experiment:
1698     - new bathymetry (the world according to A., JMC, and M.)
1699     - new initial fields and forcing fields (*.bin files)
1700     - new POLY3.COEFFS (for the next release one should switch to a full
1701       equation of state: JMD95P or MDJWF)
1702     - fixed several errors and redundancies in the data file
1703     - experiment uses looped cells
1704     - added matlab directory with diagnostic scripts for plotting of output
1705    
1706    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1707     - read AIM physics parameters from a file (data.aimphys)
1708     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1709    
1710    checkpoint46j_post
1711    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1712    o move wVel computation at the end of the time step, in S/R integr_continuity
1713    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1714    o update timeave pkg for wVel diagnostic.
1715    checkpoint46j_pre
1716    
1717    checkpoint46i_post
1718    o Clean up AIM package (and keep the results unchanged):
1719      include CPP_OPTION and use IMPLICT NONE in all routines ;
1720      declare all the variables _RL ; use _d 0 for all numerical constants.
1721      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1722    
1723    checkpoint46h_post
1724    o cleaned up the use of rhoNil and rhoConst.
1725      - rhoNil should only appear in the LINEAR equation of state, everywhere
1726        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1727        and the dynamical equations are all divided by rhoConst
1728    o introduced new parameter rhoConstFresh, a reference density of fresh
1729      water, to remove the fresh water flux's dependence on rhoNil. The default
1730      value is 999.8 kg/m^3
1731    o cleanup up external_forcing.F and external_forcing_surf.F
1732      - can now be used by both OCEANIC and OCEANICP
1733    checkpoint46h_pre
1734    
1735     Added code to convert surface volume flux (fresh water) into
1736     a mass flux when using P coordinates in the ocean (OCEANICP).
1737     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1738    
1739    checkpoint46g_post
1740    o Include a new diagnostic variable phiHydLow for the ocean model
1741      - in z-coordinates, it is the bottom pressure anomaly
1742      - in p-coordinates, it is the sea surface elevation
1743      - in both cases, these variable have global drift, reflecting the mass
1744        drift in z-coordinates and the volume drift in p-coordinates
1745      - included time averaging for phiHydLow, be aware of the drift!
1746    o depth-dependent computation of Bo_surf for pressure coordinates
1747      in the ocean (buoyancyRelation='OCEANICP')
1748      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1749        Theta, Salinity, and Pressure in the parameter list. This routine is
1750        presently contained in find_rho.F. This routine does not give the
1751        correct density for 'POLY3', which would be a z-dependent reference
1752        density.
1753    o cleaned up find_rho
1754      - removed obsolete 'eqn' from the parameter list.
1755    o added two new verification experiments: gop and goz
1756      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1757    checkpoint46g_pre
1758    
1759    checkpoint46f_post
1760    o Enable tangent linear (forward mode) gradient checks:
1761      - extended active file handling to g_... files
1762      - added TANGENT_SIMULATION to theSimulationMode
1763      - extended grdchk package accordingly
1764    o added tangent linear setup in verification/carbon/code_ftl
1765    o added adjoint setup in verification/front_relax/code_ad
1766    
1767    checkpoint46e_post
1768    o Added new equation of state -> MDJWF
1769      - EOS of McDougall et al., 2002, JAOT, submitted
1770      - caveat: the equation of state is only valid for a smaller (more
1771        realistic?) range of values than JMD95P/Z and UNESCO
1772      - added masks to the calculation of pressure in store_pressure
1773      - added more check values for density in check_eos (ini_eos.F), some of
1774        the old check values are out of the range of the MDJWF-eos, so don't
1775        expect perfect matches for those
1776    checkpoint46e_pre
1777    
1778    checkpoint46d_post
1779    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1780      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1781      case of pressure coordinates. eosType='JMD95Z' in
1782      combination with buoyancyRelation='OCEANICP' now causes an error.
1783    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1784      in find_alpha/beta.
1785    checkpoint46d_pre
1786    
1787    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1788      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1789    
1790    checkpoint46c_post
1791    o Changes necessary for ocean in p-coordinates
1792     -  Added new buoyancy relation = 'OCEANICP'
1793     -  Added new parameters = gravitySign (this used to be contained inside
1794        the factor dRdZ which I added when we first switched to R coordinates).
1795     X GM/Redi is not compatible (yet)
1796     X bottom drag and no-slip need to be debugged.
1797    checkpoint46c_pre
1798    
1799    checkpoint46b_post
1800    o Added new equation of state -> JMD95Z and JMD95P
1801      - EOS of Jackett and McDougall, 1995, JAOT
1802      - moved all EOS parameters into EOS.h
1803      - new routines ini_eos.F, store_pressure.F
1804    o Added UNESCO EOS, but not recommended because it requires
1805      in-situ temperature (see JMD95)
1806    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1807      unesco.f to be used with POLY3
1808    checkpoint46b_pre
1809    
1810    checkpoint46a_post
1811    o Added (atmospheric) pressure loading
1812      - new field in FFIELDS.h, etc...
1813      - new cpp flag ATMOSPHERIC_LOADING
1814    o Changed hFacC to _hFacC in calc_phi_hyd.F
1815    o Added SHORTWAVE_HEATING to some files for consistency
1816    checkpoint46a_pre
1817    
1818    checkpoint46
1819    further merges from release1_p5
1820    o new ctrl package
1821      - adopted from ECCO environment to enable optimization
1822      - added Eliassen Palm fluxes to controls
1823    o added Eliassen Palm flux controls to gradient check package
1824    o cost package
1825      - Compatible with new ctrl package
1826      - added Eliassen Palm cost hooks
1827      - modif's of existing cost functions
1828    o Adjoint-related bug fixes in kpp:
1829      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1830      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1831    o autodiff package
1832      - flow directives:
1833        + new for S/R do_the_model_io
1834        + enhanced for S/R checkpoint
1835        + new gmredi.flow
1836      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1837        disable adcommon.h/g_common.h by default.
1838      - fixed problem for adjoint of global_max
1839    o modified verification/carbon/
1840    o New setup for adjoint of global_ocean
1841    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1842    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1843    o incorporated hooks for sponge layer code (external_forcing.F)
1844    
1845    checkpoint45d_post
1846    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1847  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1848    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
1849    o add new parameter deltaTfreesurf for free-surface time stepping
1850    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1851  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1852  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
1853  o add new flags:  o add new flags:

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