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revision 1.159 by heimbach, Fri May 23 18:44:58 2003 UTC revision 1.463 by jmc, Tue Mar 1 16:54:32 2005 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o change port_rand funtion to allow to set the seed.
7    o fix obscure MNC bug involving conversion between reals and integers
8      - it caused no problems with certain (eg. gcc, ifc) compilers but the
9        new version is now more standards-compliant
10    
11    checkpoint57e_post
12    o Adding eddy stress controls a la Ferreira et al.
13    checkpoint57e_pre
14    
15    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
16      update output.txt of exp. fizhi-gridalt-hs
17    o add more "Z" dimensions and associated coordinate vars to MNC
18    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
19    o parameter calendarDumps: when set, approximate months (30-31 days) and years
20      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
21      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
22      months and years.  Requires pkg/cal.
23    o diagnostics: add pickup functionality
24      - off by default for backwards compatibility
25      - current version only uses MDSIO -- MNC will be added
26    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
27    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
28    
29    checkpoint57d_post
30    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
31    o modify verification/ideal_2D_oce so that it tests the creation of mnc
32      output from the diagnostics package
33    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
34    o make genmake2 more portable by using ".$FS" instead of ".f" for more
35      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
36    o add coordinate variables to the MNC output from the diagnostics package
37    o change MNC-flags default value: true when useMNC=TRUE
38    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
39      the ability (off by default) to read the grid information using MNC
40    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
41    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
42    o do snap-shot diagnostics at the middle of the time-interval (instead of
43      at the end).
44    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
45      new test for AIM with thSIce + slab-ocean
46    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
47    o move state variable diagnostics to the beginning of the time step ;
48      (note: still needs some work specially for snap-shot diagnostics)
49      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
50    
51    checkpoint57c_post
52    o Change testing option (-ieee) to get closer agreement between g77 & ifort
53    o generate new output.txt files on faulks with g77 & the new -ieee option
54    checkpoint57c_pre
55    
56    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
57      update output.txt of exp. global_ocean.90x40x15
58    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
59      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
60    o add saltFlux(+File) forcing capability with periodicExternalForcing
61    o allow to use pkg diagnostics for GM-Redi & ThSIce output
62    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
63    o improvements for the MNC output from DIAGNOSTICS:
64      - correct handling of the unlimitied dimension
65      - all dims now have associated coordinate variables
66      - variables located at U, V, and Corner ("Z") points are now written
67        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
68        *all* data points are output
69    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
70    o added pkg/seaice/seaice_monitor.F
71    o mdsio_readfield.F can now read files visible only to master MPI process.
72    o pkg/seaice: some test code for ice-modified ocean stress
73    o exf_getffields interpolation defaults to bilinear for all scalar forcing
74      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
75      spurious negative numbers for precipitation and humidity.  Will cause
76      some small numerical differences for integrations using pkg/exf/exf_interp.F.
77    o pkg/ctrl/
78      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
79        May be enabled via doPackDiag
80      *  introduce z-scaling of
81         + gradient (doZscalePack) and
82         + control (doZscaleUnpack)
83    o pkg/mdsio/
84      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
85      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
86    
87    checkpoint57b_post
88    o simplify options in diagnostics_fill arguments (remove weird combinations)
89    o fix MNC coordinate variables so that they now contain per-face index
90      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
91      general, EXCH2 grids are only aligned to a "local" coordinate system
92    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
93    o Implement instantaneous output within pkg diagnostics:
94      setting a negative frequency in data.diagnostics produces
95     "snap-shot" output (as opposed to time-average if freq > 0)
96    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
97      NOTE: change ptracer diagnostics name: use 2 characters to work with
98            more than 9 tracers. Add also diagnostics of advect & diffus flux.
99    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
100      becomes the coordinate variable for the 'T' dimension
101    o add CF-style coordinate variables to MNC
102      - just a first cut:  numbers are meaningless on the cubesphere and
103        missing along the T axis but otherwise it works!
104    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
105    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
106    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
107      this is based directly on what the model compute, so that the content of
108      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
109    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
110    o clean up build options files for SunOS, in particular
111      - remove -traditional from xmakedepend
112      - change -xarch=v9 to -xarch=native for f77
113      - restore use of make (not gmake)
114      - add CC=gcc if using g77
115    o changes per discussion of AM, JMC, & EH3 today:
116      - move redundant "grid" variables out of "state" -- in preparation of
117        creating proper CF-style coordinate variables and in recognition
118        that any/all grid variables can be easily copied (eg. w/NCO) from
119        the grid files into any of the other NetCDF files
120      - *always* output grid variables with MDSIO (this will eventually be
121        changed)
122      - output MNC grid file if useMNC is true
123    o every instance of _END_MASTER() has been found and replaced with
124      _END_MASTER( myThid ) in order to satisfy certain picky Sun
125      preprocessors
126    o re-arrange diagnostics pkg initialisation:
127     - allow each package to extend the available diagnostics list
128     - add some checking and fix small problems (multi-threaded, ...)
129     - new S/R diagnostics_fill (replace fill_diagnostics):
130       look through the short list of active diag. (instead of the long list)
131       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
132    
133    checkpoint57a_post
134    o this set of changes restores TAMC compatibility
135      tested for global_ocean.90x40x15 adjoint on trough
136      (what a pain)
137    
138    checkpoint57a_pre
139    o some modifs in tools/build_options for sunos
140    o call ctrl_pack for ctrl at end for optimcycle=0
141    
142    checkpoint57
143    o add horizontal bi-harmonic viscosity for vertical velocity
144      - new parameter viscA4W (defaults to viscA4)
145      - affects only non-hydrostatic code
146      - to be done: no-slip lateral boundary conditions
147    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
148    o implement Implicit Vertical advection for pTracers
149    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
150      (implemented also for implicit vertical diffusion & advection)
151    o OBCS: extend application of tracer open boundary conditions
152      to a strip beyond the boundary of width Olx/Oly
153    o add call monitor to TAF set of required calls (flow directives)
154      and include in natl_box_adjoint
155    o untangle a few ifdefs related to cost, ctrl, autodiff
156      untangel a few ALLOW_ECCO_OPTIMIZATION
157    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
158      (theta2, salt2 in ecco_cost_weights)
159    
160    checkpoint56c_post
161    o OBCS as control variables
162      - update ctrl_ad_diff.list, obcs_ad_diff.list
163      - remove balance of obcs controls from default
164      - fix index bug nobcs in ctrl_init
165      - fix dummy fields filen in ctrl_pack
166      - add dummy weights for obcs
167    o lsopt: comment out fort.94 output
168    o optim:
169      - remove unnecessary header files
170      - adjusted namelists
171      - add xerbla.F to Makefile
172    o exf:
173      - multiple modifications of exf_check_range
174      - unit change in exf_init_runoff from [m/year] to [m/s]
175    o mdsio:
176      - i/o-vector change debugLevel from debLevA to debLevB
177    
178    checkpoint56b_post
179    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
180      is called from DO_THE_MODEL_IO
181      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
182      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
183      - clean up PTRACERS_WRITE_TIMEAVE a little
184    o add another verification experiment that tests both the cfc-pkg and
185      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
186      reactive tendencies treated inline with regular timestepping
187    o testreport previously did a lousy job of comparing small numbers, so
188      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
189      implemented in the little c-progam tmp_cmpnum.c which is embedded in
190      testreport.
191    o ptracers_monitor: bug fix for MPI
192    
193    checkpoint56a_post
194    o GCHEM: finish reorganizating the package
195      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
196        (introduces another 3D-array for each passive tracer, but only if
197        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
198        gchemTendency is not needed because the timestep is done separately)
199      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
200      - GCHEM is now---more or less cleanly---separate from PTRACERS
201      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
202        so clear to me how that should be done in a general way.
203    o CFC: improve formatting of output in CFC_ATMOS
204    o PTRACERS:
205      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
206        that ALL experiments with ptracers enable can be checked. This makes
207        GCHEM_MONITOR obsolete.
208      - include a runtime parameter PTRACERS_monitorFreq that defaults to
209        monitorFreq
210      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
211    o add PTRACERS (PTR0[1-5]) to testreport output
212    o exf_check_range:
213      * default changed to .TRUE.
214      * will check values for niter0 if debLevA, every timestep if debLevB
215      * STOP in exf_check_range if 'out of range'
216      * range chosen generous to allow for potential extema
217      TBD: a version with stricter range
218           permitted range would be runtime parameters
219    o GMredi:
220      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
221      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
222      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
223    o GCHEM:
224      - move call to GCHEM_FORCING_SEP, so that it is now called before
225        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
226      - introduced a useGCHEM runtime flag and applied it everywhere.
227      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
228        this flag is now only visible within GCHEM-pkg routines.
229      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
230        be replaced by a 3D array that is computed before thermodynamics; for
231        this, the tracer ID iTracer had to be included into the parameter list
232        of ptracers_forcing
233      - set up forward_step to call gchem_forcing, that will replace
234        gchem_forcing_int in ptracers_forcing
235      - cleaning up
236    o small cleaning of exch2: remove files that are also in eesupp/src
237    
238    checkpoint56
239    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
240    o mnc: cleanup "full" files--fixes out-of-memory problem
241    o ECCO-GODAE
242      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
243      * fully merged and updated from SIO code
244        windstress sign change affects
245        - exf_inscal_[u/v]stress
246        - sign of xx_tau[u/v] adjustments
247        - signs in cost_scat
248      * ctrl_get_gen: avoid update of tau[u/v] for first few days
249      * natl_box_adjoint updated and compressed
250      * 2-level checkpoint switch added
251        (tested in EXP. 1 of natl_box_adjoint)
252      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
253    o SVD
254      * first complete, non-hacked version for SVD calculations
255      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
256        performed via direct access files admtlm_vector.it????
257        (via ctrl_[un]pack)
258      * optimcycle is used for ARPACK iteration counter
259        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
260      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
261        and add linear transforms where necessary
262      * controls are initial/final SST, SSS (can be extended; need to check
263        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
264    o mdsio: filename info to both stderr, stdout
265    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
266      from sign change
267    
268    checkpoint55j_post
269    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
270      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
271    o add consistent build directories and .cvsignore files to verification
272    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
273    o make all subroutines 30 or less characters in length for certain older
274      compilers to work (a thorough search only turns up two routines in
275      pkg/ptracers)
276    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
277      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
278    
279    checkpoint55i_post
280    o change arrays for total vertical diffusivity (2.D if explicit,
281      3.D if implicit) ; each ptracer uses its own background value.
282    o added mnc/NetCDF output capability to ocn_compon_interf
283      - added bits to verification/cpl_aim+ocn so that it can run on
284        ITRDA and other clusters without the mpirun "-wd" option
285    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
286      configuration
287    o give MNC the ability to create additional files rather than
288      exceeding a specified file size limit "MNC_MAX_FILESIZE"
289      - the default is just less than 2GB which is a practical limit
290        on many systems
291    o Compute the non-local term using either KPP vertical diffusivity (=default)
292       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
293    
294    checkpoint55h_post
295    o add verification test "vermix"
296    o remove all the *_ioinc flags and replace with the single global
297      outputTypesInclusive flag
298    o allow to set a vertical profile of vertical diffusivity for T & S
299    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
300    o useMNC moved from data.mnc to data.pkg
301    
302    checkpoint55g_post
303    o Renaming carbon AD experiments to comply with testreport conventions
304    o Updating adjoint of Held-Suarez hs94.1x64x5
305    o Fixing directives for non-ECCO forward_step, after ECCO directives
306      have been fixed to avoid recomp. of do_oceanic_phys
307      Works well for global_ocean.90x40x15,
308      but recomp. issue remains for carbon
309    o Updating adjoint output for natl_box_adjoint after
310      pkg/ecco has been modified (see taga c55d_post)
311    
312    checkpoint55f_post
313    o rename to timeave_init_fixed
314    
315    checkpoint55e_post
316    o some delicate re-shuffle of store directives to avoid one
317      extra call of do_oceanic_physics
318      affects ecco_the_main_loop.F, do_oceanic_physics.F
319      checkpoint_lev1_directives.h
320    o NB: this may break global_ocean adjoint temporarily,
321      but it is clear how to fix it. Will do later, need this now.
322    
323    checkpoint55d_post
324    o ECCO specific cost function terms (up-to-date with 1x1 runs)
325    o ecco_cost_weights is modified to 1x1 runs
326    o modifs to allow observations to be read in as
327      single file or yearly files
328    o enable to read exf forcing fields as either
329      single file or yearly files (flag useExfYearlyFields)
330    checkpoint55d_pre
331    
332    o switch between 2-level and 3-level checkpointing
333    o add ability of MNC to write local and "partial" (eg. 2D slices where
334      the full 3D field is never actually stored) arrays to NetCDF files
335      with the correct (that is, the complete multi-dimensional) set of
336      array indicies
337      - used in mom_vecinv() to write the diagFreq output
338      - tested (demonstrated) in verification/aim.5l_cs
339    o further mnc-ification
340      - add verification/lab_sea to the list with mnc setups
341      - fix undefined mnc v-names in cd_code
342      - add kpp to mnc output (both snapshot and timeave)
343    o non-hydrostatic code
344      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
345        in calc_gw.F
346      - defaults to viscAh
347      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
348        friction or Leith) in non-hydrostatic mode, as long as there is
349        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
350    o pkg/cost
351      extend simple cost functions to treat time mean quantities
352      (T,U,V) via cost_accumulate_state from cost_tile
353    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
354        be 2 times larger than the minimum size the advection scheme requires.
355        now get a perfect conservation of salt in advect_cs test-exp (updated)
356    o GGL90 (Gaspar's TKE mixed layer)
357      - add horizontal diffusion of TKE, requires exchanges in
358        do_fields_blocking_exchanges, horizontal diffusivity is zero by
359        default. In OPA there is no horizontal diffusion of TKE but the
360        mixing coefficients are computed from a horizontal average of TKE of
361        6 points or so. I think that diffusion has a little more physical
362        justification.
363      - clean up ggl90_calc in the hope of reducing memory usage (this hope
364        was in vain)
365      - mask tke-variable in ggl90_init
366    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
367    o fix biharmonic diffusion on CS-grid.
368    o more obcs stuff
369      - added obcs_external_fields_load as an alternative to the EXF-pkg option
370        for reading boundary values. This routine is called from
371        obcs_prescribe_read
372      - updated obcs_check
373      - changed sponge layer relaxation parameter units for days to seconds
374      - turned off sponge layer by default
375      - changed argument list of OBCS_CALC to myTime+deltaTclock
376      - fixed about 35 bugs in obcs_external_fields_load
377    
378    checkpoint55c_post
379    o obcs stuff
380      - new runtime flags useOBCSprescribe, useOBCSbalance
381      - re-arranged obcs_calc
382      - moved exf_getobcs to obcs_prescibe_read
383        obcs_prescibe_read is called after ORLANSKI stuff
384        and independent of it (executable can contain all).
385      - updated obcs_check
386      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
387        These may be necessary only if tangential velocities are
388        prescribed at OB, not sure, needs testing.
389    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
390      which simplifies the calls and passes the ifc check-bounds test
391    
392    checkpoint55b_post
393    o add a 2D scalar, Z location, exchange_2 routine.
394    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
395      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
396      affects advect_cs results (for the wrong reason): update output.txt
397    o use a more standard discretization for biharmonic viscosity ;
398     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
399      affects results of dome set-up: update output.txt
400    o fix gad_advection.F (CubedSphere part), back to version 1.23
401    o fix bug in mom_vi_del2uv.F (CubedSphere part).
402    
403    checkpoint55a_post
404    o merged code to
405      * prescribe/read time-dependent open boundaries
406        (works in conjunction with exf, cal)
407      * sponge layer code for open boundaries
408      * each boundary N/S/E/W now has its own CPP option
409        (healthy for the adjoint)
410    
411    checkpoint55
412    o up-to-date adjoint of previous breaks
413      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
414      - global_ocean_ebm: adjoint still needs fix (TLM ok)
415      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
416      - carbon: * remove tr1-related adjoint verification
417                * add ptracer as control variable
418    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
419      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
420    
421    checkpoint54f_post
422    o in verification/carbin/ remove experiment related to
423      ALLOW_PASSIVE_TRACER (array tr1 etc)
424      code_ad/ input_ad/ results_ad
425    
426    o add two new packages
427      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
428        + subject to optimization (memory)
429      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
430        + subject to reordering (many GOTOs in the original code)
431        + so far opps is called for every (i,j) point, and then operates in
432          the vertical; one may want to reorder the scheme in order operate in
433          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
434          fields)
435    o overhaul of IO so that we now have flags for MDSIO and/or MNC
436      - all verification tests compile and run with linux_ia32_g77
437      - defaults are compatible with current input files--nothing
438        should change if you were not previously using MNC
439      - MNC output has been added in numerous places (eg. timeave)
440        but there are still a few writes not yet do-able with MNC
441        (this is in progress)
442      - flags now allow for either/or/both use of MDSIO and MNC and
443        documentation will soon follow
444      - numerous small formatting cleanups for ProTeX
445    o add version info (via BUILD_INFO.h) to MNC and stdout
446    
447    checkpoint54e_post
448    o add two new packages
449      - pp81 (Packanowski and Philander, 1981), Richardson number and
450        stratification dependent mixing
451      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
452      - these scheme operate in a similar manner as KPP (without ghat, of
453        course), however there is only one diffusivity that is used for both
454        temperature and salinity (and passive tracers)ç
455    o add offline package
456    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
457      provided by Stephanie Dutkiewicz
458    o genmake2: add ability to search for C compilers and cleanup test output
459      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
460    
461    checkpoint54d_post
462    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
463    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
464      leading to additional shift by 5 days each year of integration
465       (i.e. leading to considerable offset over the years)
466    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
467    o start with no AB and no initial filtering (staggerTimeStep):
468      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
469    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
470      (external loading & cpl import/export stay in forward_step.F)
471    o update coupling interface to work with new staggerTimeStep
472    o change MDSIO ptracers_pickup.
473    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
474    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
475    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
476    
477    checkpoint54c_post
478    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
479      this affects (truncation error) output.txt of test-exp:
480       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
481    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
482    o change Qnet to always be the net heat flux, (+upward).
483      affects (truncation error) output of natl_box exp.: updated
484    o define the max number of passive tracers in PTRACERS_SIZE.h
485    o start to test mnc routinely in exp0
486    o add sea-ice loading (sIceLoad) as a new forcing field.
487    
488    checkpoint54b_post
489    o add testreport "-j JOBS" option for parallel builds (tested and pretty
490       impressive on Altix and Opteron systems)
491    o diagnostics can now write NetCDF files through the mnc package
492    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
493    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
494    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
495      affects (truncation error) output of lab_sea & natl_box exp.: updated
496    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
497    
498    checkpoint54a_post
499    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
500    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
501    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
502    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
503      + internal_wave (shift in writing cg2d_ini_res)
504    checkpoint54a_pre
505    
506    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
507      - modified verification/lab_sea and natl_box_adjoint accordingly
508    
509    checkpoint54
510    checkpoint53g_post
511    o prepare splitting of thermodynamics: store convect.counter in common block
512    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
513      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
514    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
515    o new parameter "nShapS": allow to treat differently S from T (nShapT)
516    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
517    o restore adjointability
518    
519    checkpoint53f_post
520    o modifications that affect AIM experiment results (update output.txt):
521      - no advection of S at top interface Nr (pkg/generic_advdiff)
522      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
523    o AIM pkg:
524      - include stability function into surf.Flux derivative relative to Tsurf
525      - calculate clear-sky radiation & surface temp. change (for diagnostics)
526    
527    checkpoint53e_post
528    o merged cylindrical coord configuration
529    o added rotating_tank experiment
530    checkpoint53e_pre
531    
532    checkpoint53d_post
533    o faulks upgraded: re-generate output.txt that have changed:
534       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
535    o Added Bryan and Lewis, 1979, vertical diffusivity profile
536    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
537    o added Sadourny discretization of Coriolis
538      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
539      - re-enabled use of omega3 (useAbsVorticity)
540    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
541      vector-invariant equations
542      - note: does *NOT* yet use same variable visc. for no-slip BC's.
543    o recoded the lateral boundary conditions for non-hydrostatic w, this time
544      hopefully without new bugs
545      - still to do: biharmonic friction for non-hydrostatic w
546    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
547    o regenerated output for global_ocean_ebm (using -ieee)
548    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
549      of mom_common/
550      - simple re-arrangement of instructions within computing loop
551    checkpoint53d_pre
552    
553    checkpoint53c_post
554    o new version of coupler for AIM+thSIce and Ocean models
555     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
556     - land: change Evaporation of snow
557     - aim with thSIce: fix bug in snow-precip.
558    o changes to calc_gw.F
559     - bug fix for w^2 term near the bottom boundary
560     - (hopefully) improve the lateral slip boundary condtions for use with
561        partial/looped cells
562      - because the bug fix changes two verification experiments anyway (exp5
563        and plume on slope), change the lateral boundary condition from half slip
564        to the value of no_slip_sides
565    o ebm package wasnt quite up to the parallel task. Fixed that.
566    o Adjoint of EBM package + verification
567      * TLM OK
568      * ADM not sufficient accuracy yet (needs further testing)
569    
570    checkpoint53b_post
571    o Commiting new energy balance model to repository
572      * package is pkg/ebm
573      * verif. is verification/global_ocean_ebm
574      * references are in ebm_driver.F
575    C      * X. Wang, P. Stone and J. Marotzke, 1999:
576    C        Global thermohaline circulation. Part I:
577    C        Sensitivity to atmospheric moisture transport.
578    C        J. Climate 12(1), 71-82
579    C      * X. Wang, P. Stone and J. Marotzke, 1999:
580    C        Global thermohaline circulation. Part II:
581    C        Sensitivity with interactive transport.
582    C        J. Climate 12(1), 83-91
583    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
584    C        Destabilization of the thermohaline circulation
585    C        by atmospheric eddy transports.
586    C        J. Climate 7(12), 1870-1882
587    o Will need long integration testing.
588    checkpoint53b_pre
589    
590    o created pkg/mom_common in preparation for variable viscosity code
591    o renamed and split ini_mnc_io
592    o pkg/land: only liquid water can diffuse or run-off
593    o AIM using land: soil wetness availability account for snow
594    o added printMapIncludesZeros to EEPARMS namelist
595    
596    checkpoint53a_post
597    o restore TAMC compatiility for exf_constants.h
598      (no usage of _d in .h)
599    o Additional storing in KPP in an attempt to fix
600      TAMC problem with adjoint of KPP code.
601      (no success...)
602      Identical code works fine with TAF.
603    o Fixed verification/natl_box_adjoint experiments.
604      Initial conditions for Experiments 4 and 5 are now
605      set to "SEAICE_initialHEFF=0", which is more reasonable,
606      and hence gives results closer to that of Experiment 2.
607      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
608    
609    checkpoint53
610    o stable checkpoint with up to date adjoint
611      TLM tests only run for 1st grdchk at the moment. Its unclear if
612      this is a code problem or a problem with resetting code for g_
613      variables that is being autogenerated wrong.
614      Otherwise:
615       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
616       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
617         are both still in chaos following their security messes.
618    
619    checkpoint52n_post
620    o various build (mostly genmake2) changes including:
621      - ability to build/run more easily within Cygwin and MacOS X
622      - more complicated Makefiles with a stronger dependence on Gnu Make
623    o pkg/seaice modifications
624      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
625        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
626        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
627      - changed proxy for geostrophic velocity and updated
628        verification/lab_sea/results/* accordingly
629      - removed ADI dynamic solver from pkg/seaice
630      - replaced all occurrences of 1/CSTICE or 1/CSUICE
631        they caused a segmentation fault under certain circumstances
632      - removed unused field WATR
633    o bug fix in exf-package:
634      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
635         now reflect that.
636    o small fixes in the cal-package:
637      - set reference date to first of January for the 'model'-calendar
638      - failing of cal_CheckDate in cal_FullDate now actually results in a
639        warning
640    o small modifications in exf-package to increase flexibility:
641      - change climtempfreeze from a constant to a runtime parameter that
642        is specified in data.exf_clim (default = -1.9)
643      - introduce runtime parameter windstressmax (default = 2.0) that is
644        specified in data.exf
645    o fix in pkg/thsice:
646      - update Evap (Tsf changes) to be consistent with Latent heat flux
647      - maintain snow precipitation unchanged (even if Tsf >=0).
648     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
649    
650    checkpoint52m_post
651    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
652      this does not change any of the results, because myIter=0 in swfrac always
653      lead to jwtype=2 (the default anyway), but the call makes little sense
654      as a default
655    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
656    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
657      atmospheric model (AIM) to use it ; add a "slab ocean" component.
658    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
659    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
660    o extending useSingleCpuIO option to work with new exch2 I/O format
661      - old-style, missing-tile I/O is still accessible by defining CPP
662        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
663    o monitor package can write to NetCDF files and/or STDOUT
664    o fix re-definition bug in MNC_GRID_INIT_ALL()
665    o doc/api_reference added
666      - a framework for building an API Reference Manual using all
667        the "protex" comments embedded in the code
668      - see pkg/generic_advdiff, pkg/mnc for examples
669    o MNC:
670      - make myThid the last argument for all subroutines
671      - new default for the grid files: NO halos
672      - add useMNC and other run-time flags
673      - separate per-file-group handling of the unlimited dimension
674      - early initialization of MNC w/ flags read at the eeboot stage
675        and lookup tables set in initialize_fixed
676      - write all MNC output to a freshly-created directory
677    o thermodynamics sea-ice (thsice) is now tested with testreport.
678    o test exp. advect_cs: use the standard cs32 grid ; update output.
679    o Added functionality to grdchk:
680      pick global i,j,k position (or nearest wet) where to perform check.
681    
682    checkpoint52l_post
683    o new land formulation:
684      a) use ground enthalpy as prognostic variable to ensure exact
685         energy conservation.
686      b) account for water temperature and for latent heat of freezing
687         in all processes (rain, run-off, ground storage)
688      c) compute surface and ground temperature implicitly.
689    o aim_v23 modification for new land model:
690      a) Treat separately land / ocean / sea-ice surface fluxes
691         to allow implicit computation of land & sea-ice surface temp.
692      b) add snow precipitation.
693    checkpoint52l_pre
694    
695    o fix problem (when 1 tile is empty) in min/max monitor.
696    o fix bug in timeAve (u,vZetatave in common block)
697    o no restoring terms under ice for pkg/seaice
698    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
699    o bug fix for pkg/seaice pickups
700    o change MNC call locations and add coordinate attributes
701    o mask vorticity at the corner ; affects global_ocean.cs output
702    o fix ini_curvilinear_grid ; test CS experiments with mpi
703    o aim.5l_cs: modify sea-ice fraction input file ; update output
704    o exf: Adding simple range check routine for exf fields after read
705    
706    checkpoint52k_post
707    o removed top-level directory "diags"
708      - we migrated these functions to pkg/timeave a long time ago
709    o fixed bug introduced in pkg/monitor
710    o accuracy ctrlprec = 32 insuffient for gradient checks using
711      averaged fields (I/O via cost_averages)
712      -> use ctrl.h in active_file*.F to control I/O precision.
713    o paramter list of CALL ADTHE_MAIN_LOOP
714    o added initial do_the_model_io to ecco
715    o set all ...Freq to zero after cost_final
716      taveFreq, dumpFreq, pChkptFreq
717    o MAIN and ECCO differentiability restored
718    
719    checkpoint52j_post
720    o fix nchklev in tamc.h for global_ocean...
721    o Bringing flow and store directives up-to-date
722    o Really weird thing!
723      call do_the_model_io from the_main_loop with parameters
724      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
725      TAF places a faulty re-call of initialise_varia
726      after cost_final call which should not be there!
727    checkpoint52j_pre
728    
729    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
730      error messages
731    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
732    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
733      debug output
734    o modfied mdsio_writefield.F to handle non-global files under exch2
735    o update AIM Cubed-Sphere exp (aim.5l_cs):
736      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
737    o update AIM Equatorial Channel exp:
738      use standard aim_v23 pkg and change the SST fields to be more realistic.
739    o globalFile now works with exch2
740    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
741      mon_vort3.F to make exch2 friendly with >1 tile per cube face
742    o limit timeave output for hi-res integrations
743    
744    checkpoint52i_post
745    o removed CPP_EEOPTIONS.h from verification/*/code
746    o updated the tiling for global_ocean_pressure
747    checkpoint52i_pre
748    
749    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
750      the old pkg/aim).
751    
752    checkpoint52h_pre
753    o shortened offending lines in exch2_send_rx?.template
754    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
755    o genmake2: add build & execute test for NetCDF code
756    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
757      old grid files, moved CPP_EEMACROS.h to pkg/exch2
758    o added useSingleCPUIO flag to monitor.F and mon_out.F
759    o added temporary hack for sea-ice dynamics on the cube:
760      metric terms are ignored and it is assumed that
761      there is no sea-ice on cube faces 1, 2, 4, and 5.
762    
763    checkpoint52f_post
764    o added exch2 cube routines to pkg/exch2
765    o modified hs94.cs-32x32x5 to use it
766    o added new grid files to hs94.cs-32x32x5
767    checkpoint52f_pre
768    
769    checkpoint52e_post
770    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
771      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
772    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
773      to work with implicit vertical advection and AB ;
774    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
775    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
776     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
777    checkpoint52e_pre
778    
779    o fix bug in impldiff when Nr=1 or Nr=2.
780    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
781    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
782    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
783      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
784    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
785    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
786    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
787    
788    checkpoint52d_post
789    o re-tiled many expts to allow comparison in multi-processor mode
790      - updated output accordingly
791      - changed hs94.128x64x5 to use intial T from file rather than use the
792        random number generator
793    o add infrastructure in model routines for fizhi and gridalt packages
794    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
795    o changes to permit hi-res, cubed-sphere, configuration
796      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
797      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
798      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
799        of surface winds for the cube
800      (A verification experiment, based on global_ocean.cs32x15, but with
801       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
802       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
803       complete with example surface forcing files and matlab scripts to look
804       at the output and compare it with that of global_ocean.cs32x15.)
805    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
806       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
807       to conform to the common rule.
808    o check-in the first version of the coupler + interfaces for multi-components
809       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
810       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
811       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
812       - ocean and atmos. share the same horizontal grid (no interpolation).
813       - exchanges between component and coupler is done in forward_step
814    o new verification experiment, cpl_aim+ocn:
815       coupled ocean - AIM atmosphere on cs32 grid.
816    
817    checkpoint52d_pre
818    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
819    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
820    
821    checkpoint52c_post
822    o Fixing OPTIONS files for use of exf:
823      - ALLOW_ECCO not needed
824      - ECCO_CPPOPTIONS.h should not be included from
825        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
826        as has been the case in the past
827      - All cal/exf related options are currently set in
828        single header file. Should remain so until we
829        agree on a consistent new policy.
830    o Removed all CPP options for cal package.
831      cal has no more CPP options.
832    o modified STOREs in GAD_ADVECTION
833    o corrected key comp. for passkey
834    
835    checkpoint52b_post
836    o new version: "thsice" of thermodynamic sea-ice pkg:
837     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
838     - modify fluxes but do not change theta directly;
839     - light cleaning of bulk_force pkg (still needed with thsice).
840     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
841       + output_thsice.txt to test thsice & bulk_force pkgs.
842    o put back grid & coriolis monitor output.
843    checkpoint52b_pre
844    
845    o call "do_the_model_io" at the beginning (=> dump initial state)
846    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
847    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
848      (need info on NUMBER_OF_PTRACERS)
849    o missing PTRACERS headers in some routines
850    o default tamc.h in pkg/autodiff supposed to crash
851      to ensure proper customization
852    
853    checkpoint52a_post
854    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
855      - moved surfaceTendencyTice from pkg/seaice to main code
856      - subroutine FREEZE_SURFACE now limits only surface temperature
857        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
858        => new output.txt for global_ocean.cs32x15 & global_with_exf
859      - keep the old version of FREEZE for backward compatibility;
860        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
861      - corresponding modifs for TAF directives
862    o added surface flux output variables to TIMEAVE_STATVARS
863    o time-averaged output for pkg/ptracers
864    o fix problem with ECCO-related divided adjoint
865      snapshot file was missing some ad-variables,
866      but no warning issued by TAF
867    
868    checkpoint52a_pre
869    o some bug fixes for #undef REAL4_IS_SLOW
870    
871    checkpoint52 = ecco_c52_e35
872    o after testing adjoints of checkpoint51u_post
873    
874    checkpoint51u_post
875    o this is the post-merge tag of the ecco-branch
876      (needs another clean checkout and re-testing)
877    o various natl_box_adjoint configs and results
878      but no input fields
879    o obcs adjoint not yet merged!
880    o adding ECCO global 1x1 and 2x2 degree configs
881    o updated/extended some store directives for seaice
882    o pkg/ecco now containes ecco-specific part of cost function
883    o top level routines the_main_loop, forward_step
884      supersede those in model/src/
885      previous input data.cost now in data.ecco
886      (new namelist ecco_cost_nml)
887    o in ctrl/ cleaned some cross-dependencies and updated CPP options
888    
889    checkpoint51t_post
890    o this is the pre-merge tag of the ecco-branch
891    
892    checkpoint51s_post
893    o cleanup: removed various obsolete #define-s
894    o pkg/grdchk
895      - renamed 'ph-grd 3' to 'grad-res'
896      - merged from ecco-branch
897        (remaining bug fixes for obcs gradient checks)
898      - additional high-precision output for testreport
899        (grep for 'precision_grdchk_result')
900    
901    checkpoint51r_post
902    o cleaned up or removed CPP_OPTIONS.h files
903    o updated results for some of the tests to reflect the new
904      optfiles (-ieee: -O0 instead of -O3)
905    
906    checkpoint51q_post
907    o cd_code:
908      - moved cd_scheme.F -> cd_code_scheme.F
909      - separate read_checkpoint from cd_code_ini_vars.F
910      - separated cd_code part from write_checkpoint
911      - updated AD_SOURCE, generated .flow
912      - added CD_CODE_VARS.h to the_main_loop
913      - Moving cd_code specific store dir.s to pkg/cd_code
914    o ctrl package totally restructured
915      - pack/unpack now optional and decoupled from
916        xx_/adxx_ I/O
917      - ctrl_pack/unpack cleaned
918        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
919      - confined inclusion of AD_CONFIG.h to where necessary.
920    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
921    
922    checkpoint51p_post
923    o create initial cd_code package
924      - WARNING: the initialization of fields within packages
925        is broken because INI_FIELDS (where READ_CHECKPOINT is
926        called) is called *before* PACKAGES_INIT_VARIABLES.
927        This seems to be backwards since
928        1) its important to initially zero the entire field including
929           the "halo" region
930        2) zeroing needs to be done *before* reading pickup info
931           and the pickup call might or might not happen in any
932           particular run
933      - this needs an overhaul for R2
934    o cleanup verification/*/code/GMREDI_OPTIONS.h
935    o cleanup testreport
936    
937    checkpoint51o_post
938    o bringing AD-related verif's up to date with genmake2
939      - carbon/
940      - global_ocean.90x40x15/
941      - hs.94.1x64x5/
942      - (front_relax/ )
943    o (more) consistent directory structure for AD-related verif.'s
944    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
945    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
946    o bug fix in find_alpha.F for MDJWF:
947      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
948        change rho -> rho-rhoConst
949      - replace call find_rho to find_rhonum
950    o initialisation of rFlx extended to full array (required by TAF)
951      and shifted to thermodynamics
952    o removed PTRACERS.h in ptracers routine
953    o added surfacetendencyPtr to S/R parameter list pracers_forcing
954    o Correcting initialisations for fVerU, fVerV.
955    o helping TAF to recognize dependency on kUp for
956      fVerU, fVerV
957    o Replacing delZ by delR in pkg/ctrl/
958    checkpoint51o_pre
959    
960    o undid all of cp51 pending some cleanups and discussion
961    o added the [#include "AD_CONFIG.h"] statement to all files that need
962       it for adjoint/tl #defines
963     o re-worked the build logic in genmake2 to support AD_CONFIG.h
964     o removed tools/genmake since it no longer works
965    
966    checkpoint51n_post
967    o modifications to make FREEZE flux visible to pkg/kpp
968      - moved surfaceTendencyTice from pkg/seaice to main code
969      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
970      - subroutine FREEZE now limits only surface temperature
971        (this means new output.txt for global_ocean.90x40x15,
972         global_ocean.cs32x15, and global_with_exf)
973    o added surface flux output variables to TIMEAVE_STATVARS
974    
975    checkpoint51n_pre
976    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
977    o added [#include "AD_CONFIG.h"] to all files that use the following
978      defines:
979      - ALLOW_ADJOINT_RUN
980      - ALLOW_TANGENTLINEAR_RUN
981      - ALLOW_ECCO_OPTIMIZATION
982    
983    checkpoint51m_post
984    o incorporating changes to get TAMC/TAF working in genmake2
985      - added new TAMC/TAF targets to the Makefile
986      - various cleanups related to package handling
987      - these changes should have no impact on the forward model
988    
989    checkpoint51l_post
990    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
991     - faster algorithm for cal_addtime.F
992     - higher precision arithmetic, where needed
993     - pkg/exf *startdate variables changed from calendar date to
994       model integration time
995    
996    checkpoint51l_pre
997    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
998    o enable to apply restoring on S & T only in a latitude band.
999    o update output (external_forcing_surf modif. change truncation errors)
1000       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1001    
1002    checkpoint51k_post
1003    o change default to: useNHMTerms=.FALSE.
1004     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1005       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1006     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1007        exp1, ideal_2D_oce
1008     - change data file of oceanic exp (leave the results unchanged for now)
1009       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1010    o set gravitySign automatically according to the vertical coordinate used
1011      (and change sign: back to "logical" value: +1 when R increases downward)
1012    o added an include barrier to the default CPP_OPTIONS.h and
1013      removed the #include "PACKAGES_CONFIG.h" from it
1014    o fix a bug in mom_fluxform (from chk51j_post)
1015    
1016    checkpoint51j_post
1017    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1018    o adjusted some flow directives (dynamics, thermodynamics)
1019    o added cubed-sphere case to test cost function
1020    o heckpoint_lev?_directives.h now include
1021      pkg-specific directives, whenever those are enabled.
1022    o Moving pkg-specific flow directives to corresponding pkg
1023      Moving pkg-specific differentiation list to corresponding pkg
1024      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1025      ---> conventions are
1026           - pkg_ad.flow
1027           - pkg_ad_diff.list
1028           - pkg_ad_check_lev?_dir.h
1029    
1030    checkpoint51i_post
1031    o merge of the branch-genmake2
1032      - knowingly breaks the older genmake
1033      - automatic generation of all ALLOW_${PKG_NAME} defines
1034      - new testreport supersedes older testscript
1035    o large number of package inclusion and header cleanups
1036    checkpoint51i_pre
1037    
1038    o new output for adjoin of global ocean vector invariant
1039    o fix for checkpoint of thermodynamic seaice and bulk_force
1040    o Steph gchem various cleanups
1041    
1042    checkpoint 51h_pre
1043    o fixed some single quotes
1044    o modify gchem pkg to be more versatile
1045    o modifications to clean up dic pkg
1046    o add pkg/cfc
1047    
1048    checkpoint51g_post
1049    o provide links for ARPACK and ADM*TLM
1050    o start removing verification/vero/
1051    o update AD-related stuff
1052      (in particular some IF-statements in model/src/ routines)
1053    o adding to verification/global_ocean.90x40x15/ adjoint of
1054      vector invariant setup
1055    
1056    checkpoint51f_post
1057    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1058    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1059      of tracer Green's fucntions for ocean inversion project.
1060    
1061    checkpoint51f_pre
1062    o Added on-the-fly spatial interpolation capability
1063        "USE_EXF_INTERPOLATION" to pkg/exf.
1064      - This is a temporary Cartesian-grid hack until
1065        the super-duper ESMF coupler becomes available.
1066      - See verification/global_with_exf/README for usage example.
1067      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1068        flags and modified pkg/seaice accordingly.
1069    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1070        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1071        non-local transport term.
1072    
1073    checkpoint51e_post
1074    o pkg/mom_vecinv:
1075      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1076      - add time-ave diagnostic of vorticity advection.
1077    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1078    o atmospheric geopotential: - include water vapor effect;
1079                                - use p^kappa in p* scaling.
1080    o land pkg: read initial state from files.
1081    o AIM : add stratospheric drag in the upper level
1082    
1083    checkpoint51d_post
1084    o change function ILNBLNK (=> last non-blank char.) to return zero
1085      (instead of the string length) when the string. char is empty
1086    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1087    o modif's to restore TAMC compatibility
1088      - avoid "_d" constructs in PARAMETER declarations
1089      - avoid interrupting lines by comment lines
1090    o Use cluster local disks for purely local I/O
1091      vs. globally visible disks needed for ctrl stuff
1092      (merged from ecco-branch)
1093      - new active_file_loc... and mdsio_..._loc routines
1094      - affected packages: autodiff, ctrl, grdchk, mdsio
1095    
1096    checkpoint51c_post
1097    o introducing integer flag debugLevel
1098      - debLevZero: suppress all output
1099      - debLevA: standard
1100      - debLevB: equivalent to current debugMode=.TRUE.
1101    o introducing pathname variable mdsioLocalDir for mdsio
1102      that can be specified at runtime
1103      (relevant for cluster I/O to local disk)
1104    `
1105    >>>checkpoint51b_post
1106    adjoint of ptracers
1107    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1108    o extended state in checkpoint_lev?, etc.
1109    o alternative ctrl/cost with tr1 or ptracer
1110    o new comlev1_bibj_ptracers
1111    o new ptracers.flow
1112    o made ptracers_forcing same as external_forcing_s
1113    o added verification for adjoint with ptracers
1114      - adm. grdchk fail so far
1115      - tlm. grdchk OK
1116      - checked tapelev/comlev recomputations: OK
1117    <<<checkpoint51b_pre
1118    
1119    checkpoint51a_post
1120    o added code for biogeochemistry package
1121      - new pkgs: dic, gchem
1122      - new subroutine in ptracers
1123    o modify code for biogeo packages
1124      - in model/src and pkg/ptracers
1125    
1126    checkpoint51
1127    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1128      - autodiff, ctrl, exf, grdchk, seaice
1129      kept separate packages
1130      - cost, ecco, obcs
1131    o updating verification/internal_wave, verification/lab_sea
1132      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1133    
1134    checkpoint50i_post
1135    o Preparing next differentiable checkpoint and sync
1136      of MAIN vs. ecco-branch
1137      - 1st step: this one is differentiable
1138      - 2nd step: next(! not this) checkpoint will have updated packages
1139                  from ecco-branch)
1140    
1141    checkpoint50h_post
1142    o new package "land": provide surface BC for AIM.
1143    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1144    o AIM: use true log-P extrapolation for near surface temp (= as in
1145        F.Molteni paper) ; update aim.5l_cs output.
1146    o New variable in PARM03 for more flexible pickups
1147    o somewhat cleaned package initialisation sequence for
1148      ctrl/ cost/ ecco/ in packages_... routines
1149    
1150    checkpoint50g_post
1151    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1152      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1153      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1154        made the default because of faster convergence than ADI
1155    
1156  checkpoint50f_post  checkpoint50f_post
1157  o exf totally restructured  o exf totally restructured
1158    - replaced all exf_set_ routines by one generic exf_set_gen.F    - replaced all exf_set_ routines by one generic exf_set_gen.F

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