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revision 1.60 by jmc, Sun Feb 10 20:07:14 2002 UTC revision 1.482 by edhill, Wed May 11 00:43:04 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 in mnc, let the user create the output dir if both mnc_outdir_date
8      and mnc_outdir_num are false
9    o add fflags() to pkg/diagnostics which allows one to specify, on a
10      per-file basis, the file precision [default behavior is unchanged]
11    o added diagnostics to pkg/kpp, including computation of mixed layer
12      depth based on a temperature/density criterion
13    o updated verification/natl_box to test the new pkg/kpp diagnostics
14    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
15    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
16    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
17      not mnc -- this mistake was found by JMC and is now corrected
18    
19    checkpoint57g_post
20    o add Adams-Bashforth 3rd Order time stepping:
21      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
22      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
23    checkpoint57g_pre
24    
25    o make lambda[Theta,Salt]ClimRelax spatially varying
26      (default remains spatially uniform constant based on tau)
27    o added new control variables
28      * init. uVel, vVel, etanN
29      * lambda[Theta,Salt]ClimRelax
30    o separate masks used for ctrl_pack/unpack 'from write_grid' output
31      (suggested by G. Forget)
32    
33    checkpoint57f_post
34    o add parameter "baseTime" = model base time = time at iteration zero
35      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
36      account for baseTime shift
37    o move Coriolis arrays from PARAMS.h to GRID.h
38    checkpoint57f_pre
39    
40    o mnc-ifying the seaice package
41    o introduced an alternative length scale calculation for use in the limiting
42      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
43    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
44    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
45      as well as grad(vort3).  Made it compatible with both approximate form
46      for the cubed sphere and full form of these gradients.  Added flag
47      useFullLeith to select between approximate and full form.  
48    o add "d0" in getcon.F to reduce differences between compilers/platforms
49      update output.txt of exp. fizhi-gridalt-hs
50    o change port_rand funtion to allow to set the seed.
51    o fix obscure MNC bug involving conversion between reals and integers
52      - it caused no problems with certain (eg. gcc, ifc) compilers but the
53        new version is now more standards-compliant
54    o adjoint-related modifications
55      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
56      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
57      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
58    
59    checkpoint57e_post
60    o Adding eddy stress controls a la Ferreira et al.
61    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
62    
63    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
64      update output.txt of exp. fizhi-gridalt-hs
65    o add more "Z" dimensions and associated coordinate vars to MNC
66    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
67    o parameter calendarDumps: when set, approximate months (30-31 days) and years
68      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
69      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
70      months and years.  Requires pkg/cal.
71    o diagnostics: add pickup functionality
72      - off by default for backwards compatibility
73      - current version only uses MDSIO -- MNC will be added
74    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
75    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
76    
77    checkpoint57d_post
78    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
79    o modify verification/ideal_2D_oce so that it tests the creation of mnc
80      output from the diagnostics package
81    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
82    o make genmake2 more portable by using ".$FS" instead of ".f" for more
83      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
84    o add coordinate variables to the MNC output from the diagnostics package
85    o change MNC-flags default value: true when useMNC=TRUE
86    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
87      the ability (off by default) to read the grid information using MNC
88    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
89    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
90    o do snap-shot diagnostics at the middle of the time-interval (instead of
91      at the end).
92    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
93      new test for AIM with thSIce + slab-ocean
94    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
95    o move state variable diagnostics to the beginning of the time step ;
96      (note: still needs some work specially for snap-shot diagnostics)
97      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
98    
99    checkpoint57c_post
100    o Change testing option (-ieee) to get closer agreement between g77 & ifort
101    o generate new output.txt files on faulks with g77 & the new -ieee option
102    checkpoint57c_pre
103    
104    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
105      update output.txt of exp. global_ocean.90x40x15
106    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
107      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
108    o add saltFlux(+File) forcing capability with periodicExternalForcing
109    o allow to use pkg diagnostics for GM-Redi & ThSIce output
110    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
111    o improvements for the MNC output from DIAGNOSTICS:
112      - correct handling of the unlimitied dimension
113      - all dims now have associated coordinate variables
114      - variables located at U, V, and Corner ("Z") points are now written
115        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
116        *all* data points are output
117    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
118    o added pkg/seaice/seaice_monitor.F
119    o mdsio_readfield.F can now read files visible only to master MPI process.
120    o pkg/seaice: some test code for ice-modified ocean stress
121    o exf_getffields interpolation defaults to bilinear for all scalar forcing
122      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
123      spurious negative numbers for precipitation and humidity.  Will cause
124      some small numerical differences for integrations using pkg/exf/exf_interp.F.
125    o pkg/ctrl/
126      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
127        May be enabled via doPackDiag
128      *  introduce z-scaling of
129         + gradient (doZscalePack) and
130         + control (doZscaleUnpack)
131    o pkg/mdsio/
132      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
133      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
134    
135    checkpoint57b_post
136    o simplify options in diagnostics_fill arguments (remove weird combinations)
137    o fix MNC coordinate variables so that they now contain per-face index
138      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
139      general, EXCH2 grids are only aligned to a "local" coordinate system
140    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
141    o Implement instantaneous output within pkg diagnostics:
142      setting a negative frequency in data.diagnostics produces
143     "snap-shot" output (as opposed to time-average if freq > 0)
144    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
145      NOTE: change ptracer diagnostics name: use 2 characters to work with
146            more than 9 tracers. Add also diagnostics of advect & diffus flux.
147    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
148      becomes the coordinate variable for the 'T' dimension
149    o add CF-style coordinate variables to MNC
150      - just a first cut:  numbers are meaningless on the cubesphere and
151        missing along the T axis but otherwise it works!
152    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
153    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
154    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
155      this is based directly on what the model compute, so that the content of
156      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
157    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
158    o clean up build options files for SunOS, in particular
159      - remove -traditional from xmakedepend
160      - change -xarch=v9 to -xarch=native for f77
161      - restore use of make (not gmake)
162      - add CC=gcc if using g77
163    o changes per discussion of AM, JMC, & EH3 today:
164      - move redundant "grid" variables out of "state" -- in preparation of
165        creating proper CF-style coordinate variables and in recognition
166        that any/all grid variables can be easily copied (eg. w/NCO) from
167        the grid files into any of the other NetCDF files
168      - *always* output grid variables with MDSIO (this will eventually be
169        changed)
170      - output MNC grid file if useMNC is true
171    o every instance of _END_MASTER() has been found and replaced with
172      _END_MASTER( myThid ) in order to satisfy certain picky Sun
173      preprocessors
174    o re-arrange diagnostics pkg initialisation:
175     - allow each package to extend the available diagnostics list
176     - add some checking and fix small problems (multi-threaded, ...)
177     - new S/R diagnostics_fill (replace fill_diagnostics):
178       look through the short list of active diag. (instead of the long list)
179       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
180    
181    checkpoint57a_post
182    o this set of changes restores TAMC compatibility
183      tested for global_ocean.90x40x15 adjoint on trough
184      (what a pain)
185    
186    checkpoint57a_pre
187    o some modifs in tools/build_options for sunos
188    o call ctrl_pack for ctrl at end for optimcycle=0
189    
190    checkpoint57
191    o add horizontal bi-harmonic viscosity for vertical velocity
192      - new parameter viscA4W (defaults to viscA4)
193      - affects only non-hydrostatic code
194      - to be done: no-slip lateral boundary conditions
195    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
196    o implement Implicit Vertical advection for pTracers
197    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
198      (implemented also for implicit vertical diffusion & advection)
199    o OBCS: extend application of tracer open boundary conditions
200      to a strip beyond the boundary of width Olx/Oly
201    o add call monitor to TAF set of required calls (flow directives)
202      and include in natl_box_adjoint
203    o untangle a few ifdefs related to cost, ctrl, autodiff
204      untangel a few ALLOW_ECCO_OPTIMIZATION
205    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
206      (theta2, salt2 in ecco_cost_weights)
207    
208    checkpoint56c_post
209    o OBCS as control variables
210      - update ctrl_ad_diff.list, obcs_ad_diff.list
211      - remove balance of obcs controls from default
212      - fix index bug nobcs in ctrl_init
213      - fix dummy fields filen in ctrl_pack
214      - add dummy weights for obcs
215    o lsopt: comment out fort.94 output
216    o optim:
217      - remove unnecessary header files
218      - adjusted namelists
219      - add xerbla.F to Makefile
220    o exf:
221      - multiple modifications of exf_check_range
222      - unit change in exf_init_runoff from [m/year] to [m/s]
223    o mdsio:
224      - i/o-vector change debugLevel from debLevA to debLevB
225    
226    checkpoint56b_post
227    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
228      is called from DO_THE_MODEL_IO
229      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
230      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
231      - clean up PTRACERS_WRITE_TIMEAVE a little
232    o add another verification experiment that tests both the cfc-pkg and
233      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
234      reactive tendencies treated inline with regular timestepping
235    o testreport previously did a lousy job of comparing small numbers, so
236      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
237      implemented in the little c-progam tmp_cmpnum.c which is embedded in
238      testreport.
239    o ptracers_monitor: bug fix for MPI
240    
241    checkpoint56a_post
242    o GCHEM: finish reorganizating the package
243      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
244        (introduces another 3D-array for each passive tracer, but only if
245        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
246        gchemTendency is not needed because the timestep is done separately)
247      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
248      - GCHEM is now---more or less cleanly---separate from PTRACERS
249      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
250        so clear to me how that should be done in a general way.
251    o CFC: improve formatting of output in CFC_ATMOS
252    o PTRACERS:
253      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
254        that ALL experiments with ptracers enable can be checked. This makes
255        GCHEM_MONITOR obsolete.
256      - include a runtime parameter PTRACERS_monitorFreq that defaults to
257        monitorFreq
258      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
259    o add PTRACERS (PTR0[1-5]) to testreport output
260    o exf_check_range:
261      * default changed to .TRUE.
262      * will check values for niter0 if debLevA, every timestep if debLevB
263      * STOP in exf_check_range if 'out of range'
264      * range chosen generous to allow for potential extema
265      TBD: a version with stricter range
266           permitted range would be runtime parameters
267    o GMredi:
268      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
269      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
270      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
271    o GCHEM:
272      - move call to GCHEM_FORCING_SEP, so that it is now called before
273        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
274      - introduced a useGCHEM runtime flag and applied it everywhere.
275      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
276        this flag is now only visible within GCHEM-pkg routines.
277      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
278        be replaced by a 3D array that is computed before thermodynamics; for
279        this, the tracer ID iTracer had to be included into the parameter list
280        of ptracers_forcing
281      - set up forward_step to call gchem_forcing, that will replace
282        gchem_forcing_int in ptracers_forcing
283      - cleaning up
284    o small cleaning of exch2: remove files that are also in eesupp/src
285    
286    checkpoint56
287    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
288    o mnc: cleanup "full" files--fixes out-of-memory problem
289    o ECCO-GODAE
290      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
291      * fully merged and updated from SIO code
292        windstress sign change affects
293        - exf_inscal_[u/v]stress
294        - sign of xx_tau[u/v] adjustments
295        - signs in cost_scat
296      * ctrl_get_gen: avoid update of tau[u/v] for first few days
297      * natl_box_adjoint updated and compressed
298      * 2-level checkpoint switch added
299        (tested in EXP. 1 of natl_box_adjoint)
300      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
301    o SVD
302      * first complete, non-hacked version for SVD calculations
303      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
304        performed via direct access files admtlm_vector.it????
305        (via ctrl_[un]pack)
306      * optimcycle is used for ARPACK iteration counter
307        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
308      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
309        and add linear transforms where necessary
310      * controls are initial/final SST, SSS (can be extended; need to check
311        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
312    o mdsio: filename info to both stderr, stdout
313    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
314      from sign change
315    
316    checkpoint55j_post
317    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
318      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
319    o add consistent build directories and .cvsignore files to verification
320    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
321    o make all subroutines 30 or less characters in length for certain older
322      compilers to work (a thorough search only turns up two routines in
323      pkg/ptracers)
324    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
325      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
326    
327    checkpoint55i_post
328    o change arrays for total vertical diffusivity (2.D if explicit,
329      3.D if implicit) ; each ptracer uses its own background value.
330    o added mnc/NetCDF output capability to ocn_compon_interf
331      - added bits to verification/cpl_aim+ocn so that it can run on
332        ITRDA and other clusters without the mpirun "-wd" option
333    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
334      configuration
335    o give MNC the ability to create additional files rather than
336      exceeding a specified file size limit "MNC_MAX_FILESIZE"
337      - the default is just less than 2GB which is a practical limit
338        on many systems
339    o Compute the non-local term using either KPP vertical diffusivity (=default)
340       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
341    
342    checkpoint55h_post
343    o add verification test "vermix"
344    o remove all the *_ioinc flags and replace with the single global
345      outputTypesInclusive flag
346    o allow to set a vertical profile of vertical diffusivity for T & S
347    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
348    o useMNC moved from data.mnc to data.pkg
349    
350    checkpoint55g_post
351    o Renaming carbon AD experiments to comply with testreport conventions
352    o Updating adjoint of Held-Suarez hs94.1x64x5
353    o Fixing directives for non-ECCO forward_step, after ECCO directives
354      have been fixed to avoid recomp. of do_oceanic_phys
355      Works well for global_ocean.90x40x15,
356      but recomp. issue remains for carbon
357    o Updating adjoint output for natl_box_adjoint after
358      pkg/ecco has been modified (see taga c55d_post)
359    
360    checkpoint55f_post
361    o rename to timeave_init_fixed
362    
363    checkpoint55e_post
364    o some delicate re-shuffle of store directives to avoid one
365      extra call of do_oceanic_physics
366      affects ecco_the_main_loop.F, do_oceanic_physics.F
367      checkpoint_lev1_directives.h
368    o NB: this may break global_ocean adjoint temporarily,
369      but it is clear how to fix it. Will do later, need this now.
370    
371    checkpoint55d_post
372    o ECCO specific cost function terms (up-to-date with 1x1 runs)
373    o ecco_cost_weights is modified to 1x1 runs
374    o modifs to allow observations to be read in as
375      single file or yearly files
376    o enable to read exf forcing fields as either
377      single file or yearly files (flag useExfYearlyFields)
378    checkpoint55d_pre
379    
380    o switch between 2-level and 3-level checkpointing
381    o add ability of MNC to write local and "partial" (eg. 2D slices where
382      the full 3D field is never actually stored) arrays to NetCDF files
383      with the correct (that is, the complete multi-dimensional) set of
384      array indicies
385      - used in mom_vecinv() to write the diagFreq output
386      - tested (demonstrated) in verification/aim.5l_cs
387    o further mnc-ification
388      - add verification/lab_sea to the list with mnc setups
389      - fix undefined mnc v-names in cd_code
390      - add kpp to mnc output (both snapshot and timeave)
391    o non-hydrostatic code
392      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
393        in calc_gw.F
394      - defaults to viscAh
395      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
396        friction or Leith) in non-hydrostatic mode, as long as there is
397        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
398    o pkg/cost
399      extend simple cost functions to treat time mean quantities
400      (T,U,V) via cost_accumulate_state from cost_tile
401    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
402        be 2 times larger than the minimum size the advection scheme requires.
403        now get a perfect conservation of salt in advect_cs test-exp (updated)
404    o GGL90 (Gaspar's TKE mixed layer)
405      - add horizontal diffusion of TKE, requires exchanges in
406        do_fields_blocking_exchanges, horizontal diffusivity is zero by
407        default. In OPA there is no horizontal diffusion of TKE but the
408        mixing coefficients are computed from a horizontal average of TKE of
409        6 points or so. I think that diffusion has a little more physical
410        justification.
411      - clean up ggl90_calc in the hope of reducing memory usage (this hope
412        was in vain)
413      - mask tke-variable in ggl90_init
414    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
415    o fix biharmonic diffusion on CS-grid.
416    o more obcs stuff
417      - added obcs_external_fields_load as an alternative to the EXF-pkg option
418        for reading boundary values. This routine is called from
419        obcs_prescribe_read
420      - updated obcs_check
421      - changed sponge layer relaxation parameter units for days to seconds
422      - turned off sponge layer by default
423      - changed argument list of OBCS_CALC to myTime+deltaTclock
424      - fixed about 35 bugs in obcs_external_fields_load
425    
426    checkpoint55c_post
427    o obcs stuff
428      - new runtime flags useOBCSprescribe, useOBCSbalance
429      - re-arranged obcs_calc
430      - moved exf_getobcs to obcs_prescibe_read
431        obcs_prescibe_read is called after ORLANSKI stuff
432        and independent of it (executable can contain all).
433      - updated obcs_check
434      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
435        These may be necessary only if tangential velocities are
436        prescribed at OB, not sure, needs testing.
437    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
438      which simplifies the calls and passes the ifc check-bounds test
439    
440    checkpoint55b_post
441    o add a 2D scalar, Z location, exchange_2 routine.
442    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
443      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
444      affects advect_cs results (for the wrong reason): update output.txt
445    o use a more standard discretization for biharmonic viscosity ;
446     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
447      affects results of dome set-up: update output.txt
448    o fix gad_advection.F (CubedSphere part), back to version 1.23
449    o fix bug in mom_vi_del2uv.F (CubedSphere part).
450    
451    checkpoint55a_post
452    o merged code to
453      * prescribe/read time-dependent open boundaries
454        (works in conjunction with exf, cal)
455      * sponge layer code for open boundaries
456      * each boundary N/S/E/W now has its own CPP option
457        (healthy for the adjoint)
458    
459    checkpoint55
460    o up-to-date adjoint of previous breaks
461      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
462      - global_ocean_ebm: adjoint still needs fix (TLM ok)
463      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
464      - carbon: * remove tr1-related adjoint verification
465                * add ptracer as control variable
466    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
467      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
468    
469    checkpoint54f_post
470    o in verification/carbin/ remove experiment related to
471      ALLOW_PASSIVE_TRACER (array tr1 etc)
472      code_ad/ input_ad/ results_ad
473    
474    o add two new packages
475      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
476        + subject to optimization (memory)
477      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
478        + subject to reordering (many GOTOs in the original code)
479        + so far opps is called for every (i,j) point, and then operates in
480          the vertical; one may want to reorder the scheme in order operate in
481          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
482          fields)
483    o overhaul of IO so that we now have flags for MDSIO and/or MNC
484      - all verification tests compile and run with linux_ia32_g77
485      - defaults are compatible with current input files--nothing
486        should change if you were not previously using MNC
487      - MNC output has been added in numerous places (eg. timeave)
488        but there are still a few writes not yet do-able with MNC
489        (this is in progress)
490      - flags now allow for either/or/both use of MDSIO and MNC and
491        documentation will soon follow
492      - numerous small formatting cleanups for ProTeX
493    o add version info (via BUILD_INFO.h) to MNC and stdout
494    
495    checkpoint54e_post
496    o add two new packages
497      - pp81 (Packanowski and Philander, 1981), Richardson number and
498        stratification dependent mixing
499      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
500      - these scheme operate in a similar manner as KPP (without ghat, of
501        course), however there is only one diffusivity that is used for both
502        temperature and salinity (and passive tracers)ç
503    o add offline package
504    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
505      provided by Stephanie Dutkiewicz
506    o genmake2: add ability to search for C compilers and cleanup test output
507      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
508    
509    checkpoint54d_post
510    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
511    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
512      leading to additional shift by 5 days each year of integration
513       (i.e. leading to considerable offset over the years)
514    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
515    o start with no AB and no initial filtering (staggerTimeStep):
516      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
517    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
518      (external loading & cpl import/export stay in forward_step.F)
519    o update coupling interface to work with new staggerTimeStep
520    o change MDSIO ptracers_pickup.
521    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
522    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
523    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
524    
525    checkpoint54c_post
526    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
527      this affects (truncation error) output.txt of test-exp:
528       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
529    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
530    o change Qnet to always be the net heat flux, (+upward).
531      affects (truncation error) output of natl_box exp.: updated
532    o define the max number of passive tracers in PTRACERS_SIZE.h
533    o start to test mnc routinely in exp0
534    o add sea-ice loading (sIceLoad) as a new forcing field.
535    
536    checkpoint54b_post
537    o add testreport "-j JOBS" option for parallel builds (tested and pretty
538       impressive on Altix and Opteron systems)
539    o diagnostics can now write NetCDF files through the mnc package
540    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
541    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
542    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
543      affects (truncation error) output of lab_sea & natl_box exp.: updated
544    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
545    
546    checkpoint54a_post
547    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
548    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
549    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
550    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
551      + internal_wave (shift in writing cg2d_ini_res)
552    checkpoint54a_pre
553    
554    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
555      - modified verification/lab_sea and natl_box_adjoint accordingly
556    
557    checkpoint54
558    checkpoint53g_post
559    o prepare splitting of thermodynamics: store convect.counter in common block
560    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
561      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
562    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
563    o new parameter "nShapS": allow to treat differently S from T (nShapT)
564    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
565    o restore adjointability
566    
567    checkpoint53f_post
568    o modifications that affect AIM experiment results (update output.txt):
569      - no advection of S at top interface Nr (pkg/generic_advdiff)
570      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
571    o AIM pkg:
572      - include stability function into surf.Flux derivative relative to Tsurf
573      - calculate clear-sky radiation & surface temp. change (for diagnostics)
574    
575    checkpoint53e_post
576    o merged cylindrical coord configuration
577    o added rotating_tank experiment
578    checkpoint53e_pre
579    
580    checkpoint53d_post
581    o faulks upgraded: re-generate output.txt that have changed:
582       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
583    o Added Bryan and Lewis, 1979, vertical diffusivity profile
584    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
585    o added Sadourny discretization of Coriolis
586      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
587      - re-enabled use of omega3 (useAbsVorticity)
588    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
589      vector-invariant equations
590      - note: does *NOT* yet use same variable visc. for no-slip BC's.
591    o recoded the lateral boundary conditions for non-hydrostatic w, this time
592      hopefully without new bugs
593      - still to do: biharmonic friction for non-hydrostatic w
594    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
595    o regenerated output for global_ocean_ebm (using -ieee)
596    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
597      of mom_common/
598      - simple re-arrangement of instructions within computing loop
599    checkpoint53d_pre
600    
601    checkpoint53c_post
602    o new version of coupler for AIM+thSIce and Ocean models
603     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
604     - land: change Evaporation of snow
605     - aim with thSIce: fix bug in snow-precip.
606    o changes to calc_gw.F
607     - bug fix for w^2 term near the bottom boundary
608     - (hopefully) improve the lateral slip boundary condtions for use with
609        partial/looped cells
610      - because the bug fix changes two verification experiments anyway (exp5
611        and plume on slope), change the lateral boundary condition from half slip
612        to the value of no_slip_sides
613    o ebm package wasnt quite up to the parallel task. Fixed that.
614    o Adjoint of EBM package + verification
615      * TLM OK
616      * ADM not sufficient accuracy yet (needs further testing)
617    
618    checkpoint53b_post
619    o Commiting new energy balance model to repository
620      * package is pkg/ebm
621      * verif. is verification/global_ocean_ebm
622      * references are in ebm_driver.F
623    C      * X. Wang, P. Stone and J. Marotzke, 1999:
624    C        Global thermohaline circulation. Part I:
625    C        Sensitivity to atmospheric moisture transport.
626    C        J. Climate 12(1), 71-82
627    C      * X. Wang, P. Stone and J. Marotzke, 1999:
628    C        Global thermohaline circulation. Part II:
629    C        Sensitivity with interactive transport.
630    C        J. Climate 12(1), 83-91
631    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
632    C        Destabilization of the thermohaline circulation
633    C        by atmospheric eddy transports.
634    C        J. Climate 7(12), 1870-1882
635    o Will need long integration testing.
636    checkpoint53b_pre
637    
638    o created pkg/mom_common in preparation for variable viscosity code
639    o renamed and split ini_mnc_io
640    o pkg/land: only liquid water can diffuse or run-off
641    o AIM using land: soil wetness availability account for snow
642    o added printMapIncludesZeros to EEPARMS namelist
643    
644    checkpoint53a_post
645    o restore TAMC compatiility for exf_constants.h
646      (no usage of _d in .h)
647    o Additional storing in KPP in an attempt to fix
648      TAMC problem with adjoint of KPP code.
649      (no success...)
650      Identical code works fine with TAF.
651    o Fixed verification/natl_box_adjoint experiments.
652      Initial conditions for Experiments 4 and 5 are now
653      set to "SEAICE_initialHEFF=0", which is more reasonable,
654      and hence gives results closer to that of Experiment 2.
655      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
656    
657    checkpoint53
658    o stable checkpoint with up to date adjoint
659      TLM tests only run for 1st grdchk at the moment. Its unclear if
660      this is a code problem or a problem with resetting code for g_
661      variables that is being autogenerated wrong.
662      Otherwise:
663       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
664       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
665         are both still in chaos following their security messes.
666    
667    checkpoint52n_post
668    o various build (mostly genmake2) changes including:
669      - ability to build/run more easily within Cygwin and MacOS X
670      - more complicated Makefiles with a stronger dependence on Gnu Make
671    o pkg/seaice modifications
672      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
673        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
674        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
675      - changed proxy for geostrophic velocity and updated
676        verification/lab_sea/results/* accordingly
677      - removed ADI dynamic solver from pkg/seaice
678      - replaced all occurrences of 1/CSTICE or 1/CSUICE
679        they caused a segmentation fault under certain circumstances
680      - removed unused field WATR
681    o bug fix in exf-package:
682      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
683         now reflect that.
684    o small fixes in the cal-package:
685      - set reference date to first of January for the 'model'-calendar
686      - failing of cal_CheckDate in cal_FullDate now actually results in a
687        warning
688    o small modifications in exf-package to increase flexibility:
689      - change climtempfreeze from a constant to a runtime parameter that
690        is specified in data.exf_clim (default = -1.9)
691      - introduce runtime parameter windstressmax (default = 2.0) that is
692        specified in data.exf
693    o fix in pkg/thsice:
694      - update Evap (Tsf changes) to be consistent with Latent heat flux
695      - maintain snow precipitation unchanged (even if Tsf >=0).
696     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
697    
698    checkpoint52m_post
699    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
700      this does not change any of the results, because myIter=0 in swfrac always
701      lead to jwtype=2 (the default anyway), but the call makes little sense
702      as a default
703    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
704    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
705      atmospheric model (AIM) to use it ; add a "slab ocean" component.
706    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
707    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
708    o extending useSingleCpuIO option to work with new exch2 I/O format
709      - old-style, missing-tile I/O is still accessible by defining CPP
710        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
711    o monitor package can write to NetCDF files and/or STDOUT
712    o fix re-definition bug in MNC_GRID_INIT_ALL()
713    o doc/api_reference added
714      - a framework for building an API Reference Manual using all
715        the "protex" comments embedded in the code
716      - see pkg/generic_advdiff, pkg/mnc for examples
717    o MNC:
718      - make myThid the last argument for all subroutines
719      - new default for the grid files: NO halos
720      - add useMNC and other run-time flags
721      - separate per-file-group handling of the unlimited dimension
722      - early initialization of MNC w/ flags read at the eeboot stage
723        and lookup tables set in initialize_fixed
724      - write all MNC output to a freshly-created directory
725    o thermodynamics sea-ice (thsice) is now tested with testreport.
726    o test exp. advect_cs: use the standard cs32 grid ; update output.
727    o Added functionality to grdchk:
728      pick global i,j,k position (or nearest wet) where to perform check.
729    
730    checkpoint52l_post
731    o new land formulation:
732      a) use ground enthalpy as prognostic variable to ensure exact
733         energy conservation.
734      b) account for water temperature and for latent heat of freezing
735         in all processes (rain, run-off, ground storage)
736      c) compute surface and ground temperature implicitly.
737    o aim_v23 modification for new land model:
738      a) Treat separately land / ocean / sea-ice surface fluxes
739         to allow implicit computation of land & sea-ice surface temp.
740      b) add snow precipitation.
741    checkpoint52l_pre
742    
743    o fix problem (when 1 tile is empty) in min/max monitor.
744    o fix bug in timeAve (u,vZetatave in common block)
745    o no restoring terms under ice for pkg/seaice
746    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
747    o bug fix for pkg/seaice pickups
748    o change MNC call locations and add coordinate attributes
749    o mask vorticity at the corner ; affects global_ocean.cs output
750    o fix ini_curvilinear_grid ; test CS experiments with mpi
751    o aim.5l_cs: modify sea-ice fraction input file ; update output
752    o exf: Adding simple range check routine for exf fields after read
753    
754    checkpoint52k_post
755    o removed top-level directory "diags"
756      - we migrated these functions to pkg/timeave a long time ago
757    o fixed bug introduced in pkg/monitor
758    o accuracy ctrlprec = 32 insuffient for gradient checks using
759      averaged fields (I/O via cost_averages)
760      -> use ctrl.h in active_file*.F to control I/O precision.
761    o paramter list of CALL ADTHE_MAIN_LOOP
762    o added initial do_the_model_io to ecco
763    o set all ...Freq to zero after cost_final
764      taveFreq, dumpFreq, pChkptFreq
765    o MAIN and ECCO differentiability restored
766    
767    checkpoint52j_post
768    o fix nchklev in tamc.h for global_ocean...
769    o Bringing flow and store directives up-to-date
770    o Really weird thing!
771      call do_the_model_io from the_main_loop with parameters
772      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
773      TAF places a faulty re-call of initialise_varia
774      after cost_final call which should not be there!
775    checkpoint52j_pre
776    
777    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
778      error messages
779    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
780    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
781      debug output
782    o modfied mdsio_writefield.F to handle non-global files under exch2
783    o update AIM Cubed-Sphere exp (aim.5l_cs):
784      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
785    o update AIM Equatorial Channel exp:
786      use standard aim_v23 pkg and change the SST fields to be more realistic.
787    o globalFile now works with exch2
788    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
789      mon_vort3.F to make exch2 friendly with >1 tile per cube face
790    o limit timeave output for hi-res integrations
791    
792    checkpoint52i_post
793    o removed CPP_EEOPTIONS.h from verification/*/code
794    o updated the tiling for global_ocean_pressure
795    checkpoint52i_pre
796    
797    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
798      the old pkg/aim).
799    
800    checkpoint52h_pre
801    o shortened offending lines in exch2_send_rx?.template
802    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
803    o genmake2: add build & execute test for NetCDF code
804    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
805      old grid files, moved CPP_EEMACROS.h to pkg/exch2
806    o added useSingleCPUIO flag to monitor.F and mon_out.F
807    o added temporary hack for sea-ice dynamics on the cube:
808      metric terms are ignored and it is assumed that
809      there is no sea-ice on cube faces 1, 2, 4, and 5.
810    
811    checkpoint52f_post
812    o added exch2 cube routines to pkg/exch2
813    o modified hs94.cs-32x32x5 to use it
814    o added new grid files to hs94.cs-32x32x5
815    checkpoint52f_pre
816    
817    checkpoint52e_post
818    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
819      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
820    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
821      to work with implicit vertical advection and AB ;
822    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
823    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
824     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
825    checkpoint52e_pre
826    
827    o fix bug in impldiff when Nr=1 or Nr=2.
828    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
829    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
830    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
831      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
832    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
833    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
834    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
835    
836    checkpoint52d_post
837    o re-tiled many expts to allow comparison in multi-processor mode
838      - updated output accordingly
839      - changed hs94.128x64x5 to use intial T from file rather than use the
840        random number generator
841    o add infrastructure in model routines for fizhi and gridalt packages
842    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
843    o changes to permit hi-res, cubed-sphere, configuration
844      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
845      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
846      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
847        of surface winds for the cube
848      (A verification experiment, based on global_ocean.cs32x15, but with
849       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
850       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
851       complete with example surface forcing files and matlab scripts to look
852       at the output and compare it with that of global_ocean.cs32x15.)
853    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
854       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
855       to conform to the common rule.
856    o check-in the first version of the coupler + interfaces for multi-components
857       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
858       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
859       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
860       - ocean and atmos. share the same horizontal grid (no interpolation).
861       - exchanges between component and coupler is done in forward_step
862    o new verification experiment, cpl_aim+ocn:
863       coupled ocean - AIM atmosphere on cs32 grid.
864    
865    checkpoint52d_pre
866    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
867    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
868    
869    checkpoint52c_post
870    o Fixing OPTIONS files for use of exf:
871      - ALLOW_ECCO not needed
872      - ECCO_CPPOPTIONS.h should not be included from
873        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
874        as has been the case in the past
875      - All cal/exf related options are currently set in
876        single header file. Should remain so until we
877        agree on a consistent new policy.
878    o Removed all CPP options for cal package.
879      cal has no more CPP options.
880    o modified STOREs in GAD_ADVECTION
881    o corrected key comp. for passkey
882    
883    checkpoint52b_post
884    o new version: "thsice" of thermodynamic sea-ice pkg:
885     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
886     - modify fluxes but do not change theta directly;
887     - light cleaning of bulk_force pkg (still needed with thsice).
888     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
889       + output_thsice.txt to test thsice & bulk_force pkgs.
890    o put back grid & coriolis monitor output.
891    checkpoint52b_pre
892    
893    o call "do_the_model_io" at the beginning (=> dump initial state)
894    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
895    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
896      (need info on NUMBER_OF_PTRACERS)
897    o missing PTRACERS headers in some routines
898    o default tamc.h in pkg/autodiff supposed to crash
899      to ensure proper customization
900    
901    checkpoint52a_post
902    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
903      - moved surfaceTendencyTice from pkg/seaice to main code
904      - subroutine FREEZE_SURFACE now limits only surface temperature
905        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
906        => new output.txt for global_ocean.cs32x15 & global_with_exf
907      - keep the old version of FREEZE for backward compatibility;
908        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
909      - corresponding modifs for TAF directives
910    o added surface flux output variables to TIMEAVE_STATVARS
911    o time-averaged output for pkg/ptracers
912    o fix problem with ECCO-related divided adjoint
913      snapshot file was missing some ad-variables,
914      but no warning issued by TAF
915    
916    checkpoint52a_pre
917    o some bug fixes for #undef REAL4_IS_SLOW
918    
919    checkpoint52 = ecco_c52_e35
920    o after testing adjoints of checkpoint51u_post
921    
922    checkpoint51u_post
923    o this is the post-merge tag of the ecco-branch
924      (needs another clean checkout and re-testing)
925    o various natl_box_adjoint configs and results
926      but no input fields
927    o obcs adjoint not yet merged!
928    o adding ECCO global 1x1 and 2x2 degree configs
929    o updated/extended some store directives for seaice
930    o pkg/ecco now containes ecco-specific part of cost function
931    o top level routines the_main_loop, forward_step
932      supersede those in model/src/
933      previous input data.cost now in data.ecco
934      (new namelist ecco_cost_nml)
935    o in ctrl/ cleaned some cross-dependencies and updated CPP options
936    
937    checkpoint51t_post
938    o this is the pre-merge tag of the ecco-branch
939    
940    checkpoint51s_post
941    o cleanup: removed various obsolete #define-s
942    o pkg/grdchk
943      - renamed 'ph-grd 3' to 'grad-res'
944      - merged from ecco-branch
945        (remaining bug fixes for obcs gradient checks)
946      - additional high-precision output for testreport
947        (grep for 'precision_grdchk_result')
948    
949    checkpoint51r_post
950    o cleaned up or removed CPP_OPTIONS.h files
951    o updated results for some of the tests to reflect the new
952      optfiles (-ieee: -O0 instead of -O3)
953    
954    checkpoint51q_post
955    o cd_code:
956      - moved cd_scheme.F -> cd_code_scheme.F
957      - separate read_checkpoint from cd_code_ini_vars.F
958      - separated cd_code part from write_checkpoint
959      - updated AD_SOURCE, generated .flow
960      - added CD_CODE_VARS.h to the_main_loop
961      - Moving cd_code specific store dir.s to pkg/cd_code
962    o ctrl package totally restructured
963      - pack/unpack now optional and decoupled from
964        xx_/adxx_ I/O
965      - ctrl_pack/unpack cleaned
966        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
967      - confined inclusion of AD_CONFIG.h to where necessary.
968    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
969    
970    checkpoint51p_post
971    o create initial cd_code package
972      - WARNING: the initialization of fields within packages
973        is broken because INI_FIELDS (where READ_CHECKPOINT is
974        called) is called *before* PACKAGES_INIT_VARIABLES.
975        This seems to be backwards since
976        1) its important to initially zero the entire field including
977           the "halo" region
978        2) zeroing needs to be done *before* reading pickup info
979           and the pickup call might or might not happen in any
980           particular run
981      - this needs an overhaul for R2
982    o cleanup verification/*/code/GMREDI_OPTIONS.h
983    o cleanup testreport
984    
985    checkpoint51o_post
986    o bringing AD-related verif's up to date with genmake2
987      - carbon/
988      - global_ocean.90x40x15/
989      - hs.94.1x64x5/
990      - (front_relax/ )
991    o (more) consistent directory structure for AD-related verif.'s
992    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
993    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
994    o bug fix in find_alpha.F for MDJWF:
995      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
996        change rho -> rho-rhoConst
997      - replace call find_rho to find_rhonum
998    o initialisation of rFlx extended to full array (required by TAF)
999      and shifted to thermodynamics
1000    o removed PTRACERS.h in ptracers routine
1001    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1002    o Correcting initialisations for fVerU, fVerV.
1003    o helping TAF to recognize dependency on kUp for
1004      fVerU, fVerV
1005    o Replacing delZ by delR in pkg/ctrl/
1006    checkpoint51o_pre
1007    
1008    o undid all of cp51 pending some cleanups and discussion
1009    o added the [#include "AD_CONFIG.h"] statement to all files that need
1010       it for adjoint/tl #defines
1011     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1012     o removed tools/genmake since it no longer works
1013    
1014    checkpoint51n_post
1015    o modifications to make FREEZE flux visible to pkg/kpp
1016      - moved surfaceTendencyTice from pkg/seaice to main code
1017      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1018      - subroutine FREEZE now limits only surface temperature
1019        (this means new output.txt for global_ocean.90x40x15,
1020         global_ocean.cs32x15, and global_with_exf)
1021    o added surface flux output variables to TIMEAVE_STATVARS
1022    
1023    checkpoint51n_pre
1024    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1025    o added [#include "AD_CONFIG.h"] to all files that use the following
1026      defines:
1027      - ALLOW_ADJOINT_RUN
1028      - ALLOW_TANGENTLINEAR_RUN
1029      - ALLOW_ECCO_OPTIMIZATION
1030    
1031    checkpoint51m_post
1032    o incorporating changes to get TAMC/TAF working in genmake2
1033      - added new TAMC/TAF targets to the Makefile
1034      - various cleanups related to package handling
1035      - these changes should have no impact on the forward model
1036    
1037    checkpoint51l_post
1038    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1039     - faster algorithm for cal_addtime.F
1040     - higher precision arithmetic, where needed
1041     - pkg/exf *startdate variables changed from calendar date to
1042       model integration time
1043    
1044    checkpoint51l_pre
1045    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1046    o enable to apply restoring on S & T only in a latitude band.
1047    o update output (external_forcing_surf modif. change truncation errors)
1048       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1049    
1050    checkpoint51k_post
1051    o change default to: useNHMTerms=.FALSE.
1052     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1053       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1054     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1055        exp1, ideal_2D_oce
1056     - change data file of oceanic exp (leave the results unchanged for now)
1057       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1058    o set gravitySign automatically according to the vertical coordinate used
1059      (and change sign: back to "logical" value: +1 when R increases downward)
1060    o added an include barrier to the default CPP_OPTIONS.h and
1061      removed the #include "PACKAGES_CONFIG.h" from it
1062    o fix a bug in mom_fluxform (from chk51j_post)
1063    
1064    checkpoint51j_post
1065    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1066    o adjusted some flow directives (dynamics, thermodynamics)
1067    o added cubed-sphere case to test cost function
1068    o heckpoint_lev?_directives.h now include
1069      pkg-specific directives, whenever those are enabled.
1070    o Moving pkg-specific flow directives to corresponding pkg
1071      Moving pkg-specific differentiation list to corresponding pkg
1072      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1073      ---> conventions are
1074           - pkg_ad.flow
1075           - pkg_ad_diff.list
1076           - pkg_ad_check_lev?_dir.h
1077    
1078    checkpoint51i_post
1079    o merge of the branch-genmake2
1080      - knowingly breaks the older genmake
1081      - automatic generation of all ALLOW_${PKG_NAME} defines
1082      - new testreport supersedes older testscript
1083    o large number of package inclusion and header cleanups
1084    checkpoint51i_pre
1085    
1086    o new output for adjoin of global ocean vector invariant
1087    o fix for checkpoint of thermodynamic seaice and bulk_force
1088    o Steph gchem various cleanups
1089    
1090    checkpoint 51h_pre
1091    o fixed some single quotes
1092    o modify gchem pkg to be more versatile
1093    o modifications to clean up dic pkg
1094    o add pkg/cfc
1095    
1096    checkpoint51g_post
1097    o provide links for ARPACK and ADM*TLM
1098    o start removing verification/vero/
1099    o update AD-related stuff
1100      (in particular some IF-statements in model/src/ routines)
1101    o adding to verification/global_ocean.90x40x15/ adjoint of
1102      vector invariant setup
1103    
1104    checkpoint51f_post
1105    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1106    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1107      of tracer Green's fucntions for ocean inversion project.
1108    
1109    checkpoint51f_pre
1110    o Added on-the-fly spatial interpolation capability
1111        "USE_EXF_INTERPOLATION" to pkg/exf.
1112      - This is a temporary Cartesian-grid hack until
1113        the super-duper ESMF coupler becomes available.
1114      - See verification/global_with_exf/README for usage example.
1115      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1116        flags and modified pkg/seaice accordingly.
1117    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1118        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1119        non-local transport term.
1120    
1121    checkpoint51e_post
1122    o pkg/mom_vecinv:
1123      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1124      - add time-ave diagnostic of vorticity advection.
1125    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1126    o atmospheric geopotential: - include water vapor effect;
1127                                - use p^kappa in p* scaling.
1128    o land pkg: read initial state from files.
1129    o AIM : add stratospheric drag in the upper level
1130    
1131    checkpoint51d_post
1132    o change function ILNBLNK (=> last non-blank char.) to return zero
1133      (instead of the string length) when the string. char is empty
1134    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1135    o modif's to restore TAMC compatibility
1136      - avoid "_d" constructs in PARAMETER declarations
1137      - avoid interrupting lines by comment lines
1138    o Use cluster local disks for purely local I/O
1139      vs. globally visible disks needed for ctrl stuff
1140      (merged from ecco-branch)
1141      - new active_file_loc... and mdsio_..._loc routines
1142      - affected packages: autodiff, ctrl, grdchk, mdsio
1143    
1144    checkpoint51c_post
1145    o introducing integer flag debugLevel
1146      - debLevZero: suppress all output
1147      - debLevA: standard
1148      - debLevB: equivalent to current debugMode=.TRUE.
1149    o introducing pathname variable mdsioLocalDir for mdsio
1150      that can be specified at runtime
1151      (relevant for cluster I/O to local disk)
1152    `
1153    >>>checkpoint51b_post
1154    adjoint of ptracers
1155    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1156    o extended state in checkpoint_lev?, etc.
1157    o alternative ctrl/cost with tr1 or ptracer
1158    o new comlev1_bibj_ptracers
1159    o new ptracers.flow
1160    o made ptracers_forcing same as external_forcing_s
1161    o added verification for adjoint with ptracers
1162      - adm. grdchk fail so far
1163      - tlm. grdchk OK
1164      - checked tapelev/comlev recomputations: OK
1165    <<<checkpoint51b_pre
1166    
1167    checkpoint51a_post
1168    o added code for biogeochemistry package
1169      - new pkgs: dic, gchem
1170      - new subroutine in ptracers
1171    o modify code for biogeo packages
1172      - in model/src and pkg/ptracers
1173    
1174    checkpoint51
1175    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1176      - autodiff, ctrl, exf, grdchk, seaice
1177      kept separate packages
1178      - cost, ecco, obcs
1179    o updating verification/internal_wave, verification/lab_sea
1180      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1181    
1182    checkpoint50i_post
1183    o Preparing next differentiable checkpoint and sync
1184      of MAIN vs. ecco-branch
1185      - 1st step: this one is differentiable
1186      - 2nd step: next(! not this) checkpoint will have updated packages
1187                  from ecco-branch)
1188    
1189    checkpoint50h_post
1190    o new package "land": provide surface BC for AIM.
1191    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1192    o AIM: use true log-P extrapolation for near surface temp (= as in
1193        F.Molteni paper) ; update aim.5l_cs output.
1194    o New variable in PARM03 for more flexible pickups
1195    o somewhat cleaned package initialisation sequence for
1196      ctrl/ cost/ ecco/ in packages_... routines
1197    
1198    checkpoint50g_post
1199    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1200      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1201      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1202        made the default because of faster convergence than ADI
1203    
1204    checkpoint50f_post
1205    o exf totally restructured
1206      - replaced all exf_set_ routines by one generic exf_set_gen.F
1207        and made sure it's still differentiable
1208      - split exf_getffields.F into new exf_bulkformulae.F
1209      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1210      - updated adjoint/makefile and relevant verif. accordingly
1211    
1212    checkpoint50f_pre
1213     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1214          + change Evap over land. (update aim.5l_cs output)
1215     o added missing .cvsignores and made uniform across expts
1216     o changed configuration of tidal_basin_2d expt
1217     o added pkg/debug functions for tracing code in fatal crashes
1218     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1219     o new fn in pkg/monitor to stop model if solution grows too big
1220     o removed lots of single quotes from comments
1221    
1222    checkpoint50e_post
1223    o make KPP work with PTRACERS
1224     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1225       nearly a copy of kpp_transport_s
1226     - there is no analogue to SurfaceTendencyS, so I have to use
1227       gPtr(of the surface layer) instead
1228    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1229    checkpoint50e_pre
1230    
1231    checkpoint50d_post
1232    o change kpp output from multiple-record state files to single-record state
1233      files analogous to write_state.F
1234    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1235      analogous to the cg2d-related output.
1236    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1237      so that writing to internal file fn (with length 512) fails.
1238    checkpoint50d_pre
1239    
1240    checkpoint50c_post
1241    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1242    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1243    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1244    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1245    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1246    
1247    checkpoint50c_pre
1248    Merging from release1_p13:
1249    o bug fix for pkg/seaice dynamic solver
1250    o Added SEAICE_initialHEFF to pkg/seaice
1251    
1252    checkpoint50b_post
1253    o store u*,v* in gU,V instead of in guNm1,gvNm1
1254    o in order to put the momForcing out of the Adams-Bashforth:
1255      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1256      to timestep.F
1257    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1258    o re-generate output for highly sensitive test-exp:
1259       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1260    
1261    checkpoint50b_pre
1262    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1263    o corrected CPP option mismatch in exf_Bulk... functions for case
1264      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1265    
1266    checkpoint50a_post
1267    o Bug fix for merging between c50 and KPP.
1268      ikey was passed from thermodynamics to kpp_calc via
1269      common block rather than being recomputed in kpp_calc,
1270      in contradiction with new key itdkey.
1271      New key ikppkey created, and tamc.h headers updated.
1272    
1273    checkpoint50
1274    - 2nd step of merge with ecco-branch:
1275      merge changes in ecco-branch back into main trunk
1276    - bug fix in find_alpha
1277    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1278    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1279    - merged some sliced AD support routines
1280    
1281    checkpoint49
1282    merged from ecco-branch:
1283    o exf:
1284      - Enable initialisation of forcing fields to constant
1285        (runtime) values.
1286      - in exf_getffields.F
1287        Reduce i-/j-loop to interior domain, discarding overlaps.
1288        That also fixes wrong TAF-key computations for key_1, key_2
1289        with bulf formulae.
1290      - exf_init.F modify #ifdef for exf_init_evap
1291      - exf_getffieldrec.F, ctrl_getrec.F
1292        The following INT-usages are not safe:
1293          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1294          fldcount = int(fldsecs/fldperiod) + 1
1295        and were modified.
1296    o autodiff: checkpoint_lev...
1297      - updated storing for bulk formulae (some arrays were missing)
1298      - added state for seaice package
1299      - synchronized with main branch
1300    o DIVA:
1301      Modif.s in
1302      - the_main_loop.F
1303      - the_model_main.F
1304      and added cost_final_restore.F cost_final_store.F
1305      o With these changes, it is possible to fully separate
1306        the first forward run to compute the cost function (mdthe_main_loop)
1307        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1308        into separate model executions.
1309        This enables better tuning of DIVA to given queue sizes.
1310      o Loss of cost function value in consecutive DIVA runs is
1311        fixed by storing to 'costfinal' file.
1312      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1313        beginning/end of adjoint integration is accounted for.
1314      The current changes apply to TAF-1.4.26.
1315      TAF has one remaining bug, requiring one manual change
1316      (see MITgcm manual).
1317    o cal: synchronized between MAIN and ecco-branch
1318    
1319    checkpoint48i_post
1320    o Changes to restore differentiability of code w.r.t. previous tag
1321      (mostly adding new routines to make list and replacing
1322      pressure by totPhiHyd).
1323    o Updated and merged grdchk package
1324      - has both ADM and TLM checks
1325      - works for single- and multi-proc.
1326      - output cleaned
1327      - worked successfully for parallel DIVA
1328    o genmake:
1329      - Adding -platform=SP4
1330      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1331    o Modif. for DIVA:
1332      ctrl_unpack should not be called in intermediate DIVA interval.
1333      (similar thing would apply for active files such as
1334      tbar, sbar, psbar, which should not be reinitialised;
1335      only relevant for ecco-branch)
1336    
1337    checkpoint48h_post
1338    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1339    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1340    o Added SEAICE_initialHEFF to pkg/seaice
1341    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1342    
1343    checkpoint48g_post
1344    --- EOS:
1345    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1346      store total Potential in totPhyHyd for diagnostics & EOS.
1347    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1348    --- Pressure/geopotential gradient:
1349    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1350    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1351      ( changes results of global_ocean_pressure )
1352    o NLFS + z-coord.: add eta*Rho' contribution.
1353    o accurate phiHyd when using interface-W at the middle between 2 centers
1354     ( changes results of ideal_2D_oce )
1355    o includes r* 2nd term in potential gradient.
1356    
1357    checkpoint48f_post
1358    Merging from release1_p12:
1359    o Modifications for using pkg/exf with pkg/seaice
1360      - improved description of the various forcing configurations
1361      - added basic radiation bulk formulae to pkg/exf
1362      - units/sign fix for evap computation in exf_getffields.F
1363      - updated verification/global_with_exf/results/output.txt
1364    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1365      (SBO) core products, including oceanic mass, center-of-mass,
1366      angular, and bottom pressure (see pkg/sbo/README.sbo).
1367    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1368      to avoid negative values in shallow regions.
1369      - updated verification/natl_box/results/output.txt
1370      - updated verification/lab_sea/results/output.txt
1371    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1372    o Added useSingleCpuIO option (see PARAMS.h).
1373    o Updated useSingleCpuIO option in mdsio_writefield.F to
1374      work with multi-field files, e.g., for single-file pickup.
1375    o pkg/seaice:
1376      - bug fix in growth.F: QNET for no shortwave case
1377      - added HeffFile for specifying initial sea-ice thickness
1378      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1379    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1380      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1381    o pkg/seaice:
1382      - adjoint-friendly modifications
1383      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1384    
1385    checkpoint48e_post
1386    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1387    o dynamics: change definition of computational domain & adapt mom_fluxform
1388      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1389    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1390        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1391        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1392        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1393        inverted_barometer solid-body.cs-32x32x1
1394      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1395    
1396    checkpoint48d_post
1397    o in preparation for r*:
1398     a) use pre-computed gradient of hydrostatic potential:
1399        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1400     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1401        => affects results of glob_oce_pressure (different truncation error)  
1402      update output.txt of ideal_2D_oce & global_ocean_pressure
1403    
1404    checkpoint48d_pre
1405    o in preparation for r*:
1406      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1407      pass the 2 comp. of the grad. as arguments to momentum S/R.
1408      but for the moment, only used if it does not change the results.
1409    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1410    
1411    checkpoint48c_post
1412    Modifications in treatment of initial flux forcing controls
1413    to avoid extra storing of flux fields.
1414    
1415    checkpoint48c_pre
1416    o Added tidal_basin_2d experiment (currently 1D!)
1417    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1418    
1419    checkpoint48b_post
1420    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1421     (modification to pressure gradient not yet implemented)
1422    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1423      (for U & V) that are used for vertical advection of momentum.
1424    
1425    checkpoint48a_post
1426    o In preparation for r*, use temp. array to compute vertical transport
1427       in flux-form momentum pkg. => change results of few test-exp.
1428      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1429                        lab_sea, natl_box & plume_on_slope
1430    
1431    checkpoint48
1432    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1433    
1434    checkpoint47j_post
1435    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1436    o moved adexch from forward_step to addummy_in_stepping
1437    o added exch in ctrl_map_...
1438    o aveFreq.=0. at end of cost_final to avoid overwrite in
1439      reverse checkpointing loop
1440    o Yet more changes in gmredi:
1441      * adgmredi_calc_tensor
1442        avoiding all recomputation of gmredi_slope_limit
1443      * adgmredi_x/y/rtransport
1444        added flag for excessive storing to avoid recomp. of
1445        u/v/rtans, dTdx/y/z
1446        -> this is not really necessary and very memory-consuming
1447      * adgmredi_slope_psi:
1448        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1449      * gmredi_slope_limit
1450        re-activated full calculation of taperfct for case 'ac02'
1451    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1452    
1453    checkpoint47i_post
1454    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1455    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1456      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1457    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1458    o gmredi: fix few bugs.
1459    
1460    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1461    This will be a good checkpoint to plug into the ecco-branch.
1462    o few modif.'s to get latest version adjointed
1463      (mainly kick out code in ini_linear_phisurf)
1464    o modif's to run adjoint with exactConserv
1465    o case GM_BOLUS_ADVEC should be cleaned
1466      S/R gmredi_slope_psi should be cleaned
1467    o verification/carbon now has exactConserv=.TRUE.
1468    
1469    checkpoint47g_post
1470    o time-average AIM output: becomes independent from statvars time-average
1471      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1472    o After TAF bug fix:
1473      Tested adjoint of gmredi package.
1474      Tests were done with checkpoint47 rather than with latest
1475      checkpoint47f_post since the latter is broken for the adjoint
1476      verification/carbon/ contains both ADM and TLM gradient checks.
1477    Here they are, before they get changed/lost/stolen.
1478    Mostly modif.'s to fix numerical sensitivities.
1479    Gradient checks OK for
1480    - GM_taper_scheme:
1481      * clipping
1482      * ac02
1483      * linear
1484      * glw91
1485      * dm95
1486      * ldd97
1487    - GMREDI_OPTIONS:
1488      * GM_VISBECK_VARIABLE_K
1489      * GM_NON_UNITY_DIAGONAL
1490      * GM_EXTRA_DIAGONAL
1491      * GM_BOLUS_ADVEC
1492    in conjunction with data.gmredi parameters to be checked in
1493    in a few minutes under verification/carbon/code/
1494    
1495    checkpoint47f_post
1496    Merging from release1_p10:
1497    o modifications for using pkg/exf with pkg/seaice
1498      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1499        and SEAICE_EXTERNAL_FLUXES
1500      - pkg/exf CPP options EXF_READ_EVAP and
1501        EXF_NO_BULK_COMPUTATIONS
1502      - usage examples are Experiments 8 and 9 in
1503        verification/lab_sea/README
1504      - verification/lab_sea default experiment now uses
1505        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1506    
1507    checkpoint47e_post
1508    o created a tag prior to creating a branch
1509    
1510    checkpoint47d_post
1511    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1512      at the bottom boundary had an erroneous half slip boundary condition
1513    o added bottom drag and no slip boundary condition capabilities to
1514      oceanic pressure coordinates code
1515    o added new verification experiment global_ocean_pressure, this experiment is
1516      also described in the tutorial section of the manual
1517    checkpoint47d_pre
1518    
1519    checkpoint47c_post
1520    o Added a verification experiment for a global cubed-sphere ocean run
1521      -  verification/global_ocean.cubed32x32x30
1522      -  uses pkg/therm_seaice and pkg/bulk_forcing
1523    
1524    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1525    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1526      when using P-coordinate; only implemented for atmospheric config.
1527    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1528      NOTES: requires option NONLIN_FRSURF to be "#define".
1529    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1530    
1531    checkpoint47b_post
1532    Merging from release1_p9:
1533    o pkg/seaice
1534      - removed GOTO's and added taf directives
1535      - double precision constants to reduce the g77 (Linux)
1536        to F77 (SGI) differences reported in release1_p8
1537    o tools/genmake
1538      - added SGI options
1539    o verification/testscript
1540      - updated to that of checkpoint47a_post
1541    o verification/global_ocean.90x40x15/input/eedata
1542      - modified for SGI f77 compatibility
1543    o verification/lab_sea
1544      - added description of sea-ice model
1545      - added missing matlab routines
1546      - added test of thermodynamics parallelization
1547    
1548    checkpoint47a_post
1549    o new pkg: aim_v23
1550     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1551       for now, keep the same surface forcing as before.
1552     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1553     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1554     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1555    o add diagnostic of surface correction term in monitor output
1556    
1557    o bulk_force and therm_seaice
1558    - Two packages:  bulk_force (Bulk forcing)
1559      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1560    - Earlier integration from Stephaine Dutkiewicz
1561      and Patrick Heimbach.
1562    - Two ifdef statements for compile time,
1563       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1564    
1565    checkpoint47
1566    differentiable version of checkpoint46n_post
1567    o bug fix in quasihydrostaticterms
1568    o * "clean" adjoint code (in terms of extensive recomputations)
1569        can now be obtained for all GMREDI options (i.e. for
1570        - GM_VISBECK_VARIABLE_K
1571        - GM_NON_UNITY_DIAGONAL
1572        - GM_EXTRA_DIAGONAL
1573        - GM_BOLUS_ADVEC )
1574      * However, wrong gradient check problem remains unsolved.
1575      * New CPP options have been introduced for different
1576        tapering schemes
1577    o external_fields_load now part of differentiation list
1578    o pressure needs multiple storing;
1579      would be nice to have store_pressure at beginning or
1580      end of forward_step, e.g. by having phiHyd global (5-dim.)
1581      (NB: pressure is needed for certain cases in find_rho,
1582      which is also invoked through convective_adjustment).
1583    o recomputations in find_rho for cases
1584     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1585    o #define ATMOSPHERIC_LOADING should be differentiable
1586    o ini_forcing shifted to begining of initialise_varia
1587    o Incorporating QNVS line search routines into MITgcm
1588      (this is separate code, and therefore not under pkg)
1589      lsopt/, optim/
1590    o Updated verification/carbon/
1591      - #define GM_VISBECK_VARIABLE_K
1592      - GM_taper_scheme    = 'ldd97'    
1593    
1594    checkpoint46n_post
1595    Merging from release1_p8:
1596    o verification/natl_box:
1597      updating new external_fields_load routine
1598    o New package: pkg/seaice
1599      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1600      The sea-ice code is based on Hibler (1979-1980).
1601      Two sea-ice dynamic solvers, ADI and LSR, are included.
1602      In addition to computing prognostic sea-ice variables and diagnosing
1603      the forcing/external data fields that drive the ocean model,
1604      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1605      The implied surface heat flux is then stored in variable
1606      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1607      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1608      non-local transport term.  Because this call precedes model
1609      thermodynamics, temperature under sea-ice may not be "exactly" at
1610      the freezing point by the time theta is dumped or time-averaged.
1611      N.B.: fairly large differences in accuracy occur across
1612            different platforms/compilers; comparison between
1613            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1614            generated output gives:
1615       T           S           U           V
1616      C D M    c        m  s        m  s        m  s        m  s
1617      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1618      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1619      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1620    
1621      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1622    o GAD:
1623      - generated new common blocks to account for call of
1624        same gad routines with differing traceridentities
1625        (needed to modify tracerIdentity indices in GAD.h)
1626      - generated separate common blocks for case useCubedSphereExchange
1627        (Department of Futurology)
1628      - parameter lists to gmredi_?transport: added tracerIdentity
1629      - added new key indices to tamc.h
1630    o external_fields_load:
1631      - added this routine to TAF list
1632      - needed to make some common blocks global and additional storing
1633        along the same lines as exf package (checkpoint_lev?_directives.h)
1634    o exf:
1635      updated external forcing package
1636      - bug fixes carried over from ecco-branch
1637        (missing OBCS_OPTIONS.h in two routines)
1638      - enable easy to use "no forcing".
1639      - added exf I/O for atmospheric loading
1640      - added exf I/O for runoff data
1641      - transfered scaling between exf <-> MITgcm to exf namelist
1642    o Adding new verification experiment global_with_exf.
1643      This verification experiment is almost identical to the
1644      global_ocean.90x40x15 experiment, except that it uses
1645      the exf (and cal) package instead of the
1646      external_fields_load routine (cf README file).
1647    
1648    checkpoint46m_post
1649    o modified testscript to return -- when there are no lines of "%MON" output
1650    o added new flag "quasiHydrostatic" for QH mode
1651      and new routine quasihydrostaticterms()
1652    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1653      New routine: mom_u_coriolis_nh()
1654    o fixed sign of non-hydrostatic metric terms in u and v equations.
1655      Depend on correct sign of gravitySign.
1656    o added work.pc* to .cvsignore in aim directories using ifc
1657    o introduced flag for controllin non-hydrostatic metric terms
1658    o removed gravitySign from PARM04
1659    o switched to g77/ifc from pgf77 in aim experiments
1660    
1661    checkpoint46l_post
1662    o made convective adjustment work with pressure coordinates:
1663     - changed the direction of k-loop in convective_adjustment.F for the
1664       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1665     - adjusted the reference pressure k-index in convective_adjustment.F
1666     - adjusted the convection condition in convect.F (in analogy to
1667       calc_ivdc.F)
1668     - convective_adjustment no longer computes anything on the halos
1669     - removed the warnings about negative salinity from find_rho.F and
1670       find_alpha.F; instead the new routine look_for_neg_salinity, called
1671       at the beginning of find_rho, find_alpha, and find_beta, does a
1672       check of the entire slice, if CPP-option
1673       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1674    checkpoint46l_pre
1675    
1676    checkpoint46k_post
1677    o fixed the verification/global_ocean.90x40x15 experiment:
1678     - new bathymetry (the world according to A., JMC, and M.)
1679     - new initial fields and forcing fields (*.bin files)
1680     - new POLY3.COEFFS (for the next release one should switch to a full
1681       equation of state: JMD95P or MDJWF)
1682     - fixed several errors and redundancies in the data file
1683     - experiment uses looped cells
1684     - added matlab directory with diagnostic scripts for plotting of output
1685    
1686    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1687     - read AIM physics parameters from a file (data.aimphys)
1688     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1689    
1690    checkpoint46j_post
1691    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1692    o move wVel computation at the end of the time step, in S/R integr_continuity
1693    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1694    o update timeave pkg for wVel diagnostic.
1695    checkpoint46j_pre
1696    
1697    checkpoint46i_post
1698    o Clean up AIM package (and keep the results unchanged):
1699      include CPP_OPTION and use IMPLICT NONE in all routines ;
1700      declare all the variables _RL ; use _d 0 for all numerical constants.
1701      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1702    
1703    checkpoint46h_post
1704    o cleaned up the use of rhoNil and rhoConst.
1705      - rhoNil should only appear in the LINEAR equation of state, everywhere
1706        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1707        and the dynamical equations are all divided by rhoConst
1708    o introduced new parameter rhoConstFresh, a reference density of fresh
1709      water, to remove the fresh water flux's dependence on rhoNil. The default
1710      value is 999.8 kg/m^3
1711    o cleanup up external_forcing.F and external_forcing_surf.F
1712      - can now be used by both OCEANIC and OCEANICP
1713    checkpoint46h_pre
1714    
1715     Added code to convert surface volume flux (fresh water) into
1716     a mass flux when using P coordinates in the ocean (OCEANICP).
1717     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1718    
1719    checkpoint46g_post
1720    o Include a new diagnostic variable phiHydLow for the ocean model
1721      - in z-coordinates, it is the bottom pressure anomaly
1722      - in p-coordinates, it is the sea surface elevation
1723      - in both cases, these variable have global drift, reflecting the mass
1724        drift in z-coordinates and the volume drift in p-coordinates
1725      - included time averaging for phiHydLow, be aware of the drift!
1726    o depth-dependent computation of Bo_surf for pressure coordinates
1727      in the ocean (buoyancyRelation='OCEANICP')
1728      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1729        Theta, Salinity, and Pressure in the parameter list. This routine is
1730        presently contained in find_rho.F. This routine does not give the
1731        correct density for 'POLY3', which would be a z-dependent reference
1732        density.
1733    o cleaned up find_rho
1734      - removed obsolete 'eqn' from the parameter list.
1735    o added two new verification experiments: gop and goz
1736      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1737    checkpoint46g_pre
1738    
1739    checkpoint46f_post
1740    o Enable tangent linear (forward mode) gradient checks:
1741      - extended active file handling to g_... files
1742      - added TANGENT_SIMULATION to theSimulationMode
1743      - extended grdchk package accordingly
1744    o added tangent linear setup in verification/carbon/code_ftl
1745    o added adjoint setup in verification/front_relax/code_ad
1746    
1747    checkpoint46e_post
1748    o Added new equation of state -> MDJWF
1749      - EOS of McDougall et al., 2002, JAOT, submitted
1750      - caveat: the equation of state is only valid for a smaller (more
1751        realistic?) range of values than JMD95P/Z and UNESCO
1752      - added masks to the calculation of pressure in store_pressure
1753      - added more check values for density in check_eos (ini_eos.F), some of
1754        the old check values are out of the range of the MDJWF-eos, so don't
1755        expect perfect matches for those
1756    checkpoint46e_pre
1757    
1758    checkpoint46d_post
1759    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1760      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1761      case of pressure coordinates. eosType='JMD95Z' in
1762      combination with buoyancyRelation='OCEANICP' now causes an error.
1763    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1764      in find_alpha/beta.
1765    checkpoint46d_pre
1766    
1767    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1768      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1769    
1770    checkpoint46c_post
1771    o Changes necessary for ocean in p-coordinates
1772     -  Added new buoyancy relation = 'OCEANICP'
1773     -  Added new parameters = gravitySign (this used to be contained inside
1774        the factor dRdZ which I added when we first switched to R coordinates).
1775     X GM/Redi is not compatible (yet)
1776     X bottom drag and no-slip need to be debugged.
1777    checkpoint46c_pre
1778    
1779    checkpoint46b_post
1780    o Added new equation of state -> JMD95Z and JMD95P
1781      - EOS of Jackett and McDougall, 1995, JAOT
1782      - moved all EOS parameters into EOS.h
1783      - new routines ini_eos.F, store_pressure.F
1784    o Added UNESCO EOS, but not recommended because it requires
1785      in-situ temperature (see JMD95)
1786    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1787      unesco.f to be used with POLY3
1788    checkpoint46b_pre
1789    
1790    checkpoint46a_post
1791    o Added (atmospheric) pressure loading
1792      - new field in FFIELDS.h, etc...
1793      - new cpp flag ATMOSPHERIC_LOADING
1794    o Changed hFacC to _hFacC in calc_phi_hyd.F
1795    o Added SHORTWAVE_HEATING to some files for consistency
1796    checkpoint46a_pre
1797    
1798    checkpoint46
1799    further merges from release1_p5
1800    o new ctrl package
1801      - adopted from ECCO environment to enable optimization
1802      - added Eliassen Palm fluxes to controls
1803    o added Eliassen Palm flux controls to gradient check package
1804    o cost package
1805      - Compatible with new ctrl package
1806      - added Eliassen Palm cost hooks
1807      - modif's of existing cost functions
1808    o Adjoint-related bug fixes in kpp:
1809      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1810      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1811    o autodiff package
1812      - flow directives:
1813        + new for S/R do_the_model_io
1814        + enhanced for S/R checkpoint
1815        + new gmredi.flow
1816      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1817        disable adcommon.h/g_common.h by default.
1818      - fixed problem for adjoint of global_max
1819    o modified verification/carbon/
1820    o New setup for adjoint of global_ocean
1821    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1822    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1823    o incorporated hooks for sponge layer code (external_forcing.F)
1824    
1825    checkpoint45d_post
1826    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1827    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1828      (affects plume_on_slope "cg2d" output)
1829    o add new parameter deltaTfreesurf for free-surface time stepping
1830    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1831    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1832    o change phiMin in exp1 (to agree with documentation)
1833    o add new flags:
1834     - T,S forcing inside/outside Adams-Bashforth
1835     - turn off temp,salt advection and/or forcing
1836     - for each tracer, define internal flag for multiDimAdvection & A-B
1837    o monitor: change definition of KE to check conservation of Energy
1838    
1839    checkpoint45c_post
1840    o Removed f90 comments ("!")
1841    o Modified initialisations to enable exf package for MITgcm
1842      (without invoking ECCO_PACKAGE).
1843    o modifications to gradient check package (Martin Losch)
1844      - enable centered differences
1845      - modified format of standard output
1846    
1847    checkpoint45b_post
1848    o cleaned exchange calls in cg2d
1849    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1850    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1851      to configure barotropic setup (Martin Losch)
1852    o moved some initialisations within bi,bj loop in dynamics
1853      (TAF flow dependency)
1854    o in initialise_varia, moved call packages_init_variables
1855      before convective_adjustment_init
1856      (corresponding adjustment of TAF tape initialisation).
1857    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1858    
1859    checkpoint45a_post
1860    o compute Rho over the whole domain (extend iMin,jMin indices)
1861    o specific exchange for X-slice domain (case Ny=1)
1862    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1863    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1864    
1865    checkpoint44h_post = checkpoint45
1866    o Fix to restore differentiability:
1867      place at which packages_init_variables is called in
1868      initialise_varia is crucial for reverse control flow.
1869    o modifications in GMRedi to enable stable adjoint
1870      (corresponding modif's in thermodynamics, dynamics)
1871    o added missing hook for sponge layer code in external_forcing
1872    o modified test cost functions
1873    o storing in gad_advection (plus removal of write(0,*)!
1874    o missing headers TR1.h added in convective_adjustment routines
1875    o errorMessageUnit set non-equal zero in eeboot
1876      (conflict on some platforms, e.g. IBM SP3)
1877    o modified carbon verif.
1878    
1879    checkpoint44h_pre
1880    o vertical grid option: allow to put the Interface at the middle between
1881      2 cell-centers ; replace delZ in pkg/kpp by drF.
1882    o GM Advective form: Tracers are advected using the residual transport (=
1883      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1884    
1885    checkpoint44g_post
1886    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1887      results) ; ifdef missing in thermodynamics.F
1888    
1889    checkpoint44f_pre,checkpoint44f_post
1890    o added PTRACERS package
1891      This allows an arbitrary number of passive tracers to be integrated
1892      forward simultaneously with the dynamicaly model.
1893      + Implemented so far:
1894        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1895        - I/O and checkpointing
1896        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1897      + Not implemented so far:
1898        - KPP
1899        - OBCS
1900      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1901        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1902        line in data.pkg.
1903      + This package is disabled by default since it increases storage.
1904    
1905    
1906    o testscript: added -cleanup option
1907    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1908                 b) enable to filter 2D fields.
1909    
1910    checkpoint44e_pre,post
1911    o re-wrote convective adjustment to use pre-calculated weights
1912      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1913      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1914      Original calls to convect() still in place.
1915    
1916    chkpt44d_pre,post
1917    o added missing EXCLUDE_MONITOR flags
1918    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1919      (incompatible typ in MIN/MAX expressions caused problems
1920      on IBM SP3)
1921    o in genmake added variable MAKEDEPEND
1922      plus resetting for case SunOS
1923    o added timer_stats.c routine for IBM SP3
1924    o removed variables in dynamics
1925    !!! I forgot to create tag chkpt44d_pre !!!
1926    !!! But chkpt44d_pre = chkpt44c_post    !!!
1927    
1928  o real fresh water flux implemented with non-linear free-surface.  o real fresh water flux implemented with non-linear free-surface.
1929    
1930  chkpt44c_pre,post  chkpt44c_pre,post

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