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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.458 by edhill, Wed Feb 23 05:17:36 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 add more "Z" dimensions and associated coordinate vars to MNC
7    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
8    o parameter calendarDumps: when set, approximate months (30-31 days) and years
9      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
10      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
11      months and years.  Requires pkg/cal.
12    o diagnostics: add pickup functionality
13      - off by default for backwards compatibility
14      - current version only uses MDSIO -- MNC will be added
15    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
16    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
17    
18    checkpoint57d_post
19    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
20    o modify verification/ideal_2D_oce so that it tests the creation of mnc
21      output from the diagnostics package
22    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
23    o make genmake2 more portable by using ".$FS" instead of ".f" for more
24      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
25    o add coordinate variables to the MNC output from the diagnostics package
26    o change MNC-flags default value: true when useMNC=TRUE
27    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
28      the ability (off by default) to read the grid information using MNC
29    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
30    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
31    o do snap-shot diagnostics at the middle of the time-interval (instead of
32      at the end).
33    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
34      new test for AIM with thSIce + slab-ocean
35    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
36    o move state variable diagnostics to the beginning of the time step ;
37      (note: still needs some work specially for snap-shot diagnostics)
38      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
39    
40    checkpoint57c_post
41    o Change testing option (-ieee) to get closer agreement between g77 & ifort
42    o generate new output.txt files on faulks with g77 & the new -ieee option
43    checkpoint57c_pre
44    
45    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
46      update output.txt of exp. global_ocean.90x40x15
47    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
48      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
49    o add saltFlux(+File) forcing capability with periodicExternalForcing
50    o allow to use pkg diagnostics for GM-Redi & ThSIce output
51    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
52    o improvements for the MNC output from DIAGNOSTICS:
53      - correct handling of the unlimitied dimension
54      - all dims now have associated coordinate variables
55      - variables located at U, V, and Corner ("Z") points are now written
56        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
57        *all* data points are output
58    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
59    o added pkg/seaice/seaice_monitor.F
60    o mdsio_readfield.F can now read files visible only to master MPI process.
61    o pkg/seaice: some test code for ice-modified ocean stress
62    o exf_getffields interpolation defaults to bilinear for all scalar forcing
63      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
64      spurious negative numbers for precipitation and humidity.  Will cause
65      some small numerical differences for integrations using pkg/exf/exf_interp.F.
66    o pkg/ctrl/
67      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
68        May be enabled via doPackDiag
69      *  introduce z-scaling of
70         + gradient (doZscalePack) and
71         + control (doZscaleUnpack)
72    o pkg/mdsio/
73      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
74      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
75    
76    checkpoint57b_post
77    o simplify options in diagnostics_fill arguments (remove weird combinations)
78    o fix MNC coordinate variables so that they now contain per-face index
79      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
80      general, EXCH2 grids are only aligned to a "local" coordinate system
81    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
82    o Implement instantaneous output within pkg diagnostics:
83      setting a negative frequency in data.diagnostics produces
84     "snap-shot" output (as opposed to time-average if freq > 0)
85    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
86      NOTE: change ptracer diagnostics name: use 2 characters to work with
87            more than 9 tracers. Add also diagnostics of advect & diffus flux.
88    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
89      becomes the coordinate variable for the 'T' dimension
90    o add CF-style coordinate variables to MNC
91      - just a first cut:  numbers are meaningless on the cubesphere and
92        missing along the T axis but otherwise it works!
93    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
94    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
95    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
96      this is based directly on what the model compute, so that the content of
97      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
98    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
99    o clean up build options files for SunOS, in particular
100      - remove -traditional from xmakedepend
101      - change -xarch=v9 to -xarch=native for f77
102      - restore use of make (not gmake)
103      - add CC=gcc if using g77
104    o changes per discussion of AM, JMC, & EH3 today:
105      - move redundant "grid" variables out of "state" -- in preparation of
106        creating proper CF-style coordinate variables and in recognition
107        that any/all grid variables can be easily copied (eg. w/NCO) from
108        the grid files into any of the other NetCDF files
109      - *always* output grid variables with MDSIO (this will eventually be
110        changed)
111      - output MNC grid file if useMNC is true
112    o every instance of _END_MASTER() has been found and replaced with
113      _END_MASTER( myThid ) in order to satisfy certain picky Sun
114      preprocessors
115    o re-arrange diagnostics pkg initialisation:
116     - allow each package to extend the available diagnostics list
117     - add some checking and fix small problems (multi-threaded, ...)
118     - new S/R diagnostics_fill (replace fill_diagnostics):
119       look through the short list of active diag. (instead of the long list)
120       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
121    
122    checkpoint57a_post
123    o this set of changes restores TAMC compatibility
124      tested for global_ocean.90x40x15 adjoint on trough
125      (what a pain)
126    
127    checkpoint57a_pre
128    o some modifs in tools/build_options for sunos
129    o call ctrl_pack for ctrl at end for optimcycle=0
130    
131    checkpoint57
132    o add horizontal bi-harmonic viscosity for vertical velocity
133      - new parameter viscA4W (defaults to viscA4)
134      - affects only non-hydrostatic code
135      - to be done: no-slip lateral boundary conditions
136    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
137    o implement Implicit Vertical advection for pTracers
138    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
139      (implemented also for implicit vertical diffusion & advection)
140    o OBCS: extend application of tracer open boundary conditions
141      to a strip beyond the boundary of width Olx/Oly
142    o add call monitor to TAF set of required calls (flow directives)
143      and include in natl_box_adjoint
144    o untangle a few ifdefs related to cost, ctrl, autodiff
145      untangel a few ALLOW_ECCO_OPTIMIZATION
146    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
147      (theta2, salt2 in ecco_cost_weights)
148    
149    checkpoint56c_post
150    o OBCS as control variables
151      - update ctrl_ad_diff.list, obcs_ad_diff.list
152      - remove balance of obcs controls from default
153      - fix index bug nobcs in ctrl_init
154      - fix dummy fields filen in ctrl_pack
155      - add dummy weights for obcs
156    o lsopt: comment out fort.94 output
157    o optim:
158      - remove unnecessary header files
159      - adjusted namelists
160      - add xerbla.F to Makefile
161    o exf:
162      - multiple modifications of exf_check_range
163      - unit change in exf_init_runoff from [m/year] to [m/s]
164    o mdsio:
165      - i/o-vector change debugLevel from debLevA to debLevB
166    
167    checkpoint56b_post
168    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
169      is called from DO_THE_MODEL_IO
170      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
171      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
172      - clean up PTRACERS_WRITE_TIMEAVE a little
173    o add another verification experiment that tests both the cfc-pkg and
174      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
175      reactive tendencies treated inline with regular timestepping
176    o testreport previously did a lousy job of comparing small numbers, so
177      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
178      implemented in the little c-progam tmp_cmpnum.c which is embedded in
179      testreport.
180    o ptracers_monitor: bug fix for MPI
181    
182    checkpoint56a_post
183    o GCHEM: finish reorganizating the package
184      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
185        (introduces another 3D-array for each passive tracer, but only if
186        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
187        gchemTendency is not needed because the timestep is done separately)
188      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
189      - GCHEM is now---more or less cleanly---separate from PTRACERS
190      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
191        so clear to me how that should be done in a general way.
192    o CFC: improve formatting of output in CFC_ATMOS
193    o PTRACERS:
194      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
195        that ALL experiments with ptracers enable can be checked. This makes
196        GCHEM_MONITOR obsolete.
197      - include a runtime parameter PTRACERS_monitorFreq that defaults to
198        monitorFreq
199      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
200    o add PTRACERS (PTR0[1-5]) to testreport output
201    o exf_check_range:
202      * default changed to .TRUE.
203      * will check values for niter0 if debLevA, every timestep if debLevB
204      * STOP in exf_check_range if 'out of range'
205      * range chosen generous to allow for potential extema
206      TBD: a version with stricter range
207           permitted range would be runtime parameters
208    o GMredi:
209      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
210      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
211      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
212    o GCHEM:
213      - move call to GCHEM_FORCING_SEP, so that it is now called before
214        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
215      - introduced a useGCHEM runtime flag and applied it everywhere.
216      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
217        this flag is now only visible within GCHEM-pkg routines.
218      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
219        be replaced by a 3D array that is computed before thermodynamics; for
220        this, the tracer ID iTracer had to be included into the parameter list
221        of ptracers_forcing
222      - set up forward_step to call gchem_forcing, that will replace
223        gchem_forcing_int in ptracers_forcing
224      - cleaning up
225    o small cleaning of exch2: remove files that are also in eesupp/src
226    
227    checkpoint56
228    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
229    o mnc: cleanup "full" files--fixes out-of-memory problem
230    o ECCO-GODAE
231      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
232      * fully merged and updated from SIO code
233        windstress sign change affects
234        - exf_inscal_[u/v]stress
235        - sign of xx_tau[u/v] adjustments
236        - signs in cost_scat
237      * ctrl_get_gen: avoid update of tau[u/v] for first few days
238      * natl_box_adjoint updated and compressed
239      * 2-level checkpoint switch added
240        (tested in EXP. 1 of natl_box_adjoint)
241      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
242    o SVD
243      * first complete, non-hacked version for SVD calculations
244      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
245        performed via direct access files admtlm_vector.it????
246        (via ctrl_[un]pack)
247      * optimcycle is used for ARPACK iteration counter
248        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
249      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
250        and add linear transforms where necessary
251      * controls are initial/final SST, SSS (can be extended; need to check
252        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
253    o mdsio: filename info to both stderr, stdout
254    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
255      from sign change
256    
257    checkpoint55j_post
258    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
259      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
260    o add consistent build directories and .cvsignore files to verification
261    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
262    o make all subroutines 30 or less characters in length for certain older
263      compilers to work (a thorough search only turns up two routines in
264      pkg/ptracers)
265    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
266      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
267    
268    checkpoint55i_post
269    o change arrays for total vertical diffusivity (2.D if explicit,
270      3.D if implicit) ; each ptracer uses its own background value.
271    o added mnc/NetCDF output capability to ocn_compon_interf
272      - added bits to verification/cpl_aim+ocn so that it can run on
273        ITRDA and other clusters without the mpirun "-wd" option
274    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
275      configuration
276    o give MNC the ability to create additional files rather than
277      exceeding a specified file size limit "MNC_MAX_FILESIZE"
278      - the default is just less than 2GB which is a practical limit
279        on many systems
280    o Compute the non-local term using either KPP vertical diffusivity (=default)
281       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
282    
283    checkpoint55h_post
284    o add verification test "vermix"
285    o remove all the *_ioinc flags and replace with the single global
286      outputTypesInclusive flag
287    o allow to set a vertical profile of vertical diffusivity for T & S
288    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
289    o useMNC moved from data.mnc to data.pkg
290    
291    checkpoint55g_post
292    o Renaming carbon AD experiments to comply with testreport conventions
293    o Updating adjoint of Held-Suarez hs94.1x64x5
294    o Fixing directives for non-ECCO forward_step, after ECCO directives
295      have been fixed to avoid recomp. of do_oceanic_phys
296      Works well for global_ocean.90x40x15,
297      but recomp. issue remains for carbon
298    o Updating adjoint output for natl_box_adjoint after
299      pkg/ecco has been modified (see taga c55d_post)
300    
301    checkpoint55f_post
302    o rename to timeave_init_fixed
303    
304    checkpoint55e_post
305    o some delicate re-shuffle of store directives to avoid one
306      extra call of do_oceanic_physics
307      affects ecco_the_main_loop.F, do_oceanic_physics.F
308      checkpoint_lev1_directives.h
309    o NB: this may break global_ocean adjoint temporarily,
310      but it is clear how to fix it. Will do later, need this now.
311    
312    checkpoint55d_post
313    o ECCO specific cost function terms (up-to-date with 1x1 runs)
314    o ecco_cost_weights is modified to 1x1 runs
315    o modifs to allow observations to be read in as
316      single file or yearly files
317    o enable to read exf forcing fields as either
318      single file or yearly files (flag useExfYearlyFields)
319    checkpoint55d_pre
320    
321    o switch between 2-level and 3-level checkpointing
322    o add ability of MNC to write local and "partial" (eg. 2D slices where
323      the full 3D field is never actually stored) arrays to NetCDF files
324      with the correct (that is, the complete multi-dimensional) set of
325      array indicies
326      - used in mom_vecinv() to write the diagFreq output
327      - tested (demonstrated) in verification/aim.5l_cs
328    o further mnc-ification
329      - add verification/lab_sea to the list with mnc setups
330      - fix undefined mnc v-names in cd_code
331      - add kpp to mnc output (both snapshot and timeave)
332    o non-hydrostatic code
333      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
334        in calc_gw.F
335      - defaults to viscAh
336      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
337        friction or Leith) in non-hydrostatic mode, as long as there is
338        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
339    o pkg/cost
340      extend simple cost functions to treat time mean quantities
341      (T,U,V) via cost_accumulate_state from cost_tile
342    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
343        be 2 times larger than the minimum size the advection scheme requires.
344        now get a perfect conservation of salt in advect_cs test-exp (updated)
345    o GGL90 (Gaspar's TKE mixed layer)
346      - add horizontal diffusion of TKE, requires exchanges in
347        do_fields_blocking_exchanges, horizontal diffusivity is zero by
348        default. In OPA there is no horizontal diffusion of TKE but the
349        mixing coefficients are computed from a horizontal average of TKE of
350        6 points or so. I think that diffusion has a little more physical
351        justification.
352      - clean up ggl90_calc in the hope of reducing memory usage (this hope
353        was in vain)
354      - mask tke-variable in ggl90_init
355    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
356    o fix biharmonic diffusion on CS-grid.
357    o more obcs stuff
358      - added obcs_external_fields_load as an alternative to the EXF-pkg option
359        for reading boundary values. This routine is called from
360        obcs_prescribe_read
361      - updated obcs_check
362      - changed sponge layer relaxation parameter units for days to seconds
363      - turned off sponge layer by default
364      - changed argument list of OBCS_CALC to myTime+deltaTclock
365      - fixed about 35 bugs in obcs_external_fields_load
366    
367    checkpoint55c_post
368    o obcs stuff
369      - new runtime flags useOBCSprescribe, useOBCSbalance
370      - re-arranged obcs_calc
371      - moved exf_getobcs to obcs_prescibe_read
372        obcs_prescibe_read is called after ORLANSKI stuff
373        and independent of it (executable can contain all).
374      - updated obcs_check
375      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
376        These may be necessary only if tangential velocities are
377        prescribed at OB, not sure, needs testing.
378    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
379      which simplifies the calls and passes the ifc check-bounds test
380    
381    checkpoint55b_post
382    o add a 2D scalar, Z location, exchange_2 routine.
383    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
384      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
385      affects advect_cs results (for the wrong reason): update output.txt
386    o use a more standard discretization for biharmonic viscosity ;
387     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
388      affects results of dome set-up: update output.txt
389    o fix gad_advection.F (CubedSphere part), back to version 1.23
390    o fix bug in mom_vi_del2uv.F (CubedSphere part).
391    
392    checkpoint55a_post
393    o merged code to
394      * prescribe/read time-dependent open boundaries
395        (works in conjunction with exf, cal)
396      * sponge layer code for open boundaries
397      * each boundary N/S/E/W now has its own CPP option
398        (healthy for the adjoint)
399    
400    checkpoint55
401    o up-to-date adjoint of previous breaks
402      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
403      - global_ocean_ebm: adjoint still needs fix (TLM ok)
404      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
405      - carbon: * remove tr1-related adjoint verification
406                * add ptracer as control variable
407    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
408      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
409    
410    checkpoint54f_post
411    o in verification/carbin/ remove experiment related to
412      ALLOW_PASSIVE_TRACER (array tr1 etc)
413      code_ad/ input_ad/ results_ad
414    
415    o add two new packages
416      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
417        + subject to optimization (memory)
418      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
419        + subject to reordering (many GOTOs in the original code)
420        + so far opps is called for every (i,j) point, and then operates in
421          the vertical; one may want to reorder the scheme in order operate in
422          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
423          fields)
424    o overhaul of IO so that we now have flags for MDSIO and/or MNC
425      - all verification tests compile and run with linux_ia32_g77
426      - defaults are compatible with current input files--nothing
427        should change if you were not previously using MNC
428      - MNC output has been added in numerous places (eg. timeave)
429        but there are still a few writes not yet do-able with MNC
430        (this is in progress)
431      - flags now allow for either/or/both use of MDSIO and MNC and
432        documentation will soon follow
433      - numerous small formatting cleanups for ProTeX
434    o add version info (via BUILD_INFO.h) to MNC and stdout
435    
436    checkpoint54e_post
437    o add two new packages
438      - pp81 (Packanowski and Philander, 1981), Richardson number and
439        stratification dependent mixing
440      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
441      - these scheme operate in a similar manner as KPP (without ghat, of
442        course), however there is only one diffusivity that is used for both
443        temperature and salinity (and passive tracers)ç
444    o add offline package
445    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
446      provided by Stephanie Dutkiewicz
447    o genmake2: add ability to search for C compilers and cleanup test output
448      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
449    
450    checkpoint54d_post
451    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
452    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
453      leading to additional shift by 5 days each year of integration
454       (i.e. leading to considerable offset over the years)
455    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
456    o start with no AB and no initial filtering (staggerTimeStep):
457      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
458    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
459      (external loading & cpl import/export stay in forward_step.F)
460    o update coupling interface to work with new staggerTimeStep
461    o change MDSIO ptracers_pickup.
462    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
463    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
464    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
465    
466    checkpoint54c_post
467    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
468      this affects (truncation error) output.txt of test-exp:
469       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
470    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
471    o change Qnet to always be the net heat flux, (+upward).
472      affects (truncation error) output of natl_box exp.: updated
473    o define the max number of passive tracers in PTRACERS_SIZE.h
474    o start to test mnc routinely in exp0
475    o add sea-ice loading (sIceLoad) as a new forcing field.
476    
477    checkpoint54b_post
478    o add testreport "-j JOBS" option for parallel builds (tested and pretty
479       impressive on Altix and Opteron systems)
480    o diagnostics can now write NetCDF files through the mnc package
481    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
482    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
483    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
484      affects (truncation error) output of lab_sea & natl_box exp.: updated
485    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
486    
487    checkpoint54a_post
488    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
489    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
490    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
491    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
492      + internal_wave (shift in writing cg2d_ini_res)
493    checkpoint54a_pre
494    
495    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
496      - modified verification/lab_sea and natl_box_adjoint accordingly
497    
498    checkpoint54
499    checkpoint53g_post
500    o prepare splitting of thermodynamics: store convect.counter in common block
501    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
502      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
503    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
504    o new parameter "nShapS": allow to treat differently S from T (nShapT)
505    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
506    o restore adjointability
507    
508    checkpoint53f_post
509    o modifications that affect AIM experiment results (update output.txt):
510      - no advection of S at top interface Nr (pkg/generic_advdiff)
511      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
512    o AIM pkg:
513      - include stability function into surf.Flux derivative relative to Tsurf
514      - calculate clear-sky radiation & surface temp. change (for diagnostics)
515    
516    checkpoint53e_post
517    o merged cylindrical coord configuration
518    o added rotating_tank experiment
519    checkpoint53e_pre
520    
521    checkpoint53d_post
522    o faulks upgraded: re-generate output.txt that have changed:
523       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
524    o Added Bryan and Lewis, 1979, vertical diffusivity profile
525    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
526    o added Sadourny discretization of Coriolis
527      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
528      - re-enabled use of omega3 (useAbsVorticity)
529    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
530      vector-invariant equations
531      - note: does *NOT* yet use same variable visc. for no-slip BC's.
532    o recoded the lateral boundary conditions for non-hydrostatic w, this time
533      hopefully without new bugs
534      - still to do: biharmonic friction for non-hydrostatic w
535    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
536    o regenerated output for global_ocean_ebm (using -ieee)
537    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
538      of mom_common/
539      - simple re-arrangement of instructions within computing loop
540    checkpoint53d_pre
541    
542    checkpoint53c_post
543    o new version of coupler for AIM+thSIce and Ocean models
544     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
545     - land: change Evaporation of snow
546     - aim with thSIce: fix bug in snow-precip.
547    o changes to calc_gw.F
548     - bug fix for w^2 term near the bottom boundary
549     - (hopefully) improve the lateral slip boundary condtions for use with
550        partial/looped cells
551      - because the bug fix changes two verification experiments anyway (exp5
552        and plume on slope), change the lateral boundary condition from half slip
553        to the value of no_slip_sides
554    o ebm package wasnt quite up to the parallel task. Fixed that.
555    o Adjoint of EBM package + verification
556      * TLM OK
557      * ADM not sufficient accuracy yet (needs further testing)
558    
559    checkpoint53b_post
560    o Commiting new energy balance model to repository
561      * package is pkg/ebm
562      * verif. is verification/global_ocean_ebm
563      * references are in ebm_driver.F
564    C      * X. Wang, P. Stone and J. Marotzke, 1999:
565    C        Global thermohaline circulation. Part I:
566    C        Sensitivity to atmospheric moisture transport.
567    C        J. Climate 12(1), 71-82
568    C      * X. Wang, P. Stone and J. Marotzke, 1999:
569    C        Global thermohaline circulation. Part II:
570    C        Sensitivity with interactive transport.
571    C        J. Climate 12(1), 83-91
572    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
573    C        Destabilization of the thermohaline circulation
574    C        by atmospheric eddy transports.
575    C        J. Climate 7(12), 1870-1882
576    o Will need long integration testing.
577    checkpoint53b_pre
578    
579    o created pkg/mom_common in preparation for variable viscosity code
580    o renamed and split ini_mnc_io
581    o pkg/land: only liquid water can diffuse or run-off
582    o AIM using land: soil wetness availability account for snow
583    o added printMapIncludesZeros to EEPARMS namelist
584    
585    checkpoint53a_post
586    o restore TAMC compatiility for exf_constants.h
587      (no usage of _d in .h)
588    o Additional storing in KPP in an attempt to fix
589      TAMC problem with adjoint of KPP code.
590      (no success...)
591      Identical code works fine with TAF.
592    o Fixed verification/natl_box_adjoint experiments.
593      Initial conditions for Experiments 4 and 5 are now
594      set to "SEAICE_initialHEFF=0", which is more reasonable,
595      and hence gives results closer to that of Experiment 2.
596      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
597    
598    checkpoint53
599    o stable checkpoint with up to date adjoint
600      TLM tests only run for 1st grdchk at the moment. Its unclear if
601      this is a code problem or a problem with resetting code for g_
602      variables that is being autogenerated wrong.
603      Otherwise:
604       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
605       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
606         are both still in chaos following their security messes.
607    
608    checkpoint52n_post
609    o various build (mostly genmake2) changes including:
610      - ability to build/run more easily within Cygwin and MacOS X
611      - more complicated Makefiles with a stronger dependence on Gnu Make
612    o pkg/seaice modifications
613      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
614        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
615        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
616      - changed proxy for geostrophic velocity and updated
617        verification/lab_sea/results/* accordingly
618      - removed ADI dynamic solver from pkg/seaice
619      - replaced all occurrences of 1/CSTICE or 1/CSUICE
620        they caused a segmentation fault under certain circumstances
621      - removed unused field WATR
622    o bug fix in exf-package:
623      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
624         now reflect that.
625    o small fixes in the cal-package:
626      - set reference date to first of January for the 'model'-calendar
627      - failing of cal_CheckDate in cal_FullDate now actually results in a
628        warning
629    o small modifications in exf-package to increase flexibility:
630      - change climtempfreeze from a constant to a runtime parameter that
631        is specified in data.exf_clim (default = -1.9)
632      - introduce runtime parameter windstressmax (default = 2.0) that is
633        specified in data.exf
634    o fix in pkg/thsice:
635      - update Evap (Tsf changes) to be consistent with Latent heat flux
636      - maintain snow precipitation unchanged (even if Tsf >=0).
637     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
638    
639    checkpoint52m_post
640    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
641      this does not change any of the results, because myIter=0 in swfrac always
642      lead to jwtype=2 (the default anyway), but the call makes little sense
643      as a default
644    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
645    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
646      atmospheric model (AIM) to use it ; add a "slab ocean" component.
647    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
648    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
649    o extending useSingleCpuIO option to work with new exch2 I/O format
650      - old-style, missing-tile I/O is still accessible by defining CPP
651        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
652    o monitor package can write to NetCDF files and/or STDOUT
653    o fix re-definition bug in MNC_GRID_INIT_ALL()
654    o doc/api_reference added
655      - a framework for building an API Reference Manual using all
656        the "protex" comments embedded in the code
657      - see pkg/generic_advdiff, pkg/mnc for examples
658    o MNC:
659      - make myThid the last argument for all subroutines
660      - new default for the grid files: NO halos
661      - add useMNC and other run-time flags
662      - separate per-file-group handling of the unlimited dimension
663      - early initialization of MNC w/ flags read at the eeboot stage
664        and lookup tables set in initialize_fixed
665      - write all MNC output to a freshly-created directory
666    o thermodynamics sea-ice (thsice) is now tested with testreport.
667    o test exp. advect_cs: use the standard cs32 grid ; update output.
668    o Added functionality to grdchk:
669      pick global i,j,k position (or nearest wet) where to perform check.
670    
671    checkpoint52l_post
672    o new land formulation:
673      a) use ground enthalpy as prognostic variable to ensure exact
674         energy conservation.
675      b) account for water temperature and for latent heat of freezing
676         in all processes (rain, run-off, ground storage)
677      c) compute surface and ground temperature implicitly.
678    o aim_v23 modification for new land model:
679      a) Treat separately land / ocean / sea-ice surface fluxes
680         to allow implicit computation of land & sea-ice surface temp.
681      b) add snow precipitation.
682    checkpoint52l_pre
683    
684    o fix problem (when 1 tile is empty) in min/max monitor.
685    o fix bug in timeAve (u,vZetatave in common block)
686    o no restoring terms under ice for pkg/seaice
687    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
688    o bug fix for pkg/seaice pickups
689    o change MNC call locations and add coordinate attributes
690    o mask vorticity at the corner ; affects global_ocean.cs output
691    o fix ini_curvilinear_grid ; test CS experiments with mpi
692    o aim.5l_cs: modify sea-ice fraction input file ; update output
693    o exf: Adding simple range check routine for exf fields after read
694    
695    checkpoint52k_post
696    o removed top-level directory "diags"
697      - we migrated these functions to pkg/timeave a long time ago
698    o fixed bug introduced in pkg/monitor
699    o accuracy ctrlprec = 32 insuffient for gradient checks using
700      averaged fields (I/O via cost_averages)
701      -> use ctrl.h in active_file*.F to control I/O precision.
702    o paramter list of CALL ADTHE_MAIN_LOOP
703    o added initial do_the_model_io to ecco
704    o set all ...Freq to zero after cost_final
705      taveFreq, dumpFreq, pChkptFreq
706    o MAIN and ECCO differentiability restored
707    
708    checkpoint52j_post
709    o fix nchklev in tamc.h for global_ocean...
710    o Bringing flow and store directives up-to-date
711    o Really weird thing!
712      call do_the_model_io from the_main_loop with parameters
713      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
714      TAF places a faulty re-call of initialise_varia
715      after cost_final call which should not be there!
716    checkpoint52j_pre
717    
718    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
719      error messages
720    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
721    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
722      debug output
723    o modfied mdsio_writefield.F to handle non-global files under exch2
724    o update AIM Cubed-Sphere exp (aim.5l_cs):
725      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
726    o update AIM Equatorial Channel exp:
727      use standard aim_v23 pkg and change the SST fields to be more realistic.
728    o globalFile now works with exch2
729    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
730      mon_vort3.F to make exch2 friendly with >1 tile per cube face
731    o limit timeave output for hi-res integrations
732    
733    checkpoint52i_post
734    o removed CPP_EEOPTIONS.h from verification/*/code
735    o updated the tiling for global_ocean_pressure
736    checkpoint52i_pre
737    
738    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
739      the old pkg/aim).
740    
741    checkpoint52h_pre
742    o shortened offending lines in exch2_send_rx?.template
743    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
744    o genmake2: add build & execute test for NetCDF code
745    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
746      old grid files, moved CPP_EEMACROS.h to pkg/exch2
747    o added useSingleCPUIO flag to monitor.F and mon_out.F
748    o added temporary hack for sea-ice dynamics on the cube:
749      metric terms are ignored and it is assumed that
750      there is no sea-ice on cube faces 1, 2, 4, and 5.
751    
752    checkpoint52f_post
753    o added exch2 cube routines to pkg/exch2
754    o modified hs94.cs-32x32x5 to use it
755    o added new grid files to hs94.cs-32x32x5
756    checkpoint52f_pre
757    
758    checkpoint52e_post
759    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
760      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
761    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
762      to work with implicit vertical advection and AB ;
763    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
764    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
765     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
766    checkpoint52e_pre
767    
768    o fix bug in impldiff when Nr=1 or Nr=2.
769    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
770    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
771    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
772      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
773    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
774    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
775    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
776    
777    checkpoint52d_post
778    o re-tiled many expts to allow comparison in multi-processor mode
779      - updated output accordingly
780      - changed hs94.128x64x5 to use intial T from file rather than use the
781        random number generator
782    o add infrastructure in model routines for fizhi and gridalt packages
783    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
784    o changes to permit hi-res, cubed-sphere, configuration
785      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
786      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
787      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
788        of surface winds for the cube
789      (A verification experiment, based on global_ocean.cs32x15, but with
790       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
791       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
792       complete with example surface forcing files and matlab scripts to look
793       at the output and compare it with that of global_ocean.cs32x15.)
794    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
795       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
796       to conform to the common rule.
797    o check-in the first version of the coupler + interfaces for multi-components
798       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
799       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
800       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
801       - ocean and atmos. share the same horizontal grid (no interpolation).
802       - exchanges between component and coupler is done in forward_step
803    o new verification experiment, cpl_aim+ocn:
804       coupled ocean - AIM atmosphere on cs32 grid.
805    
806    checkpoint52d_pre
807    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
808    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
809    
810    checkpoint52c_post
811    o Fixing OPTIONS files for use of exf:
812      - ALLOW_ECCO not needed
813      - ECCO_CPPOPTIONS.h should not be included from
814        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
815        as has been the case in the past
816      - All cal/exf related options are currently set in
817        single header file. Should remain so until we
818        agree on a consistent new policy.
819    o Removed all CPP options for cal package.
820      cal has no more CPP options.
821    o modified STOREs in GAD_ADVECTION
822    o corrected key comp. for passkey
823    
824    checkpoint52b_post
825    o new version: "thsice" of thermodynamic sea-ice pkg:
826     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
827     - modify fluxes but do not change theta directly;
828     - light cleaning of bulk_force pkg (still needed with thsice).
829     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
830       + output_thsice.txt to test thsice & bulk_force pkgs.
831    o put back grid & coriolis monitor output.
832    checkpoint52b_pre
833    
834    o call "do_the_model_io" at the beginning (=> dump initial state)
835    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
836    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
837      (need info on NUMBER_OF_PTRACERS)
838    o missing PTRACERS headers in some routines
839    o default tamc.h in pkg/autodiff supposed to crash
840      to ensure proper customization
841    
842    checkpoint52a_post
843    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
844      - moved surfaceTendencyTice from pkg/seaice to main code
845      - subroutine FREEZE_SURFACE now limits only surface temperature
846        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
847        => new output.txt for global_ocean.cs32x15 & global_with_exf
848      - keep the old version of FREEZE for backward compatibility;
849        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
850      - corresponding modifs for TAF directives
851    o added surface flux output variables to TIMEAVE_STATVARS
852    o time-averaged output for pkg/ptracers
853    o fix problem with ECCO-related divided adjoint
854      snapshot file was missing some ad-variables,
855      but no warning issued by TAF
856    
857    checkpoint52a_pre
858    o some bug fixes for #undef REAL4_IS_SLOW
859    
860    checkpoint52 = ecco_c52_e35
861    o after testing adjoints of checkpoint51u_post
862    
863    checkpoint51u_post
864    o this is the post-merge tag of the ecco-branch
865      (needs another clean checkout and re-testing)
866    o various natl_box_adjoint configs and results
867      but no input fields
868    o obcs adjoint not yet merged!
869    o adding ECCO global 1x1 and 2x2 degree configs
870    o updated/extended some store directives for seaice
871    o pkg/ecco now containes ecco-specific part of cost function
872    o top level routines the_main_loop, forward_step
873      supersede those in model/src/
874      previous input data.cost now in data.ecco
875      (new namelist ecco_cost_nml)
876    o in ctrl/ cleaned some cross-dependencies and updated CPP options
877    
878    checkpoint51t_post
879    o this is the pre-merge tag of the ecco-branch
880    
881    checkpoint51s_post
882    o cleanup: removed various obsolete #define-s
883    o pkg/grdchk
884      - renamed 'ph-grd 3' to 'grad-res'
885      - merged from ecco-branch
886        (remaining bug fixes for obcs gradient checks)
887      - additional high-precision output for testreport
888        (grep for 'precision_grdchk_result')
889    
890    checkpoint51r_post
891    o cleaned up or removed CPP_OPTIONS.h files
892    o updated results for some of the tests to reflect the new
893      optfiles (-ieee: -O0 instead of -O3)
894    
895    checkpoint51q_post
896    o cd_code:
897      - moved cd_scheme.F -> cd_code_scheme.F
898      - separate read_checkpoint from cd_code_ini_vars.F
899      - separated cd_code part from write_checkpoint
900      - updated AD_SOURCE, generated .flow
901      - added CD_CODE_VARS.h to the_main_loop
902      - Moving cd_code specific store dir.s to pkg/cd_code
903    o ctrl package totally restructured
904      - pack/unpack now optional and decoupled from
905        xx_/adxx_ I/O
906      - ctrl_pack/unpack cleaned
907        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
908      - confined inclusion of AD_CONFIG.h to where necessary.
909    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
910    
911    checkpoint51p_post
912    o create initial cd_code package
913      - WARNING: the initialization of fields within packages
914        is broken because INI_FIELDS (where READ_CHECKPOINT is
915        called) is called *before* PACKAGES_INIT_VARIABLES.
916        This seems to be backwards since
917        1) its important to initially zero the entire field including
918           the "halo" region
919        2) zeroing needs to be done *before* reading pickup info
920           and the pickup call might or might not happen in any
921           particular run
922      - this needs an overhaul for R2
923    o cleanup verification/*/code/GMREDI_OPTIONS.h
924    o cleanup testreport
925    
926    checkpoint51o_post
927    o bringing AD-related verif's up to date with genmake2
928      - carbon/
929      - global_ocean.90x40x15/
930      - hs.94.1x64x5/
931      - (front_relax/ )
932    o (more) consistent directory structure for AD-related verif.'s
933    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
934    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
935    o bug fix in find_alpha.F for MDJWF:
936      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
937        change rho -> rho-rhoConst
938      - replace call find_rho to find_rhonum
939    o initialisation of rFlx extended to full array (required by TAF)
940      and shifted to thermodynamics
941    o removed PTRACERS.h in ptracers routine
942    o added surfacetendencyPtr to S/R parameter list pracers_forcing
943    o Correcting initialisations for fVerU, fVerV.
944    o helping TAF to recognize dependency on kUp for
945      fVerU, fVerV
946    o Replacing delZ by delR in pkg/ctrl/
947    checkpoint51o_pre
948    
949    o undid all of cp51 pending some cleanups and discussion
950    o added the [#include "AD_CONFIG.h"] statement to all files that need
951       it for adjoint/tl #defines
952     o re-worked the build logic in genmake2 to support AD_CONFIG.h
953     o removed tools/genmake since it no longer works
954    
955    checkpoint51n_post
956    o modifications to make FREEZE flux visible to pkg/kpp
957      - moved surfaceTendencyTice from pkg/seaice to main code
958      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
959      - subroutine FREEZE now limits only surface temperature
960        (this means new output.txt for global_ocean.90x40x15,
961         global_ocean.cs32x15, and global_with_exf)
962    o added surface flux output variables to TIMEAVE_STATVARS
963    
964    checkpoint51n_pre
965    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
966    o added [#include "AD_CONFIG.h"] to all files that use the following
967      defines:
968      - ALLOW_ADJOINT_RUN
969      - ALLOW_TANGENTLINEAR_RUN
970      - ALLOW_ECCO_OPTIMIZATION
971    
972    checkpoint51m_post
973    o incorporating changes to get TAMC/TAF working in genmake2
974      - added new TAMC/TAF targets to the Makefile
975      - various cleanups related to package handling
976      - these changes should have no impact on the forward model
977    
978    checkpoint51l_post
979    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
980     - faster algorithm for cal_addtime.F
981     - higher precision arithmetic, where needed
982     - pkg/exf *startdate variables changed from calendar date to
983       model integration time
984    
985    checkpoint51l_pre
986    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
987    o enable to apply restoring on S & T only in a latitude band.
988    o update output (external_forcing_surf modif. change truncation errors)
989       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
990    
991    checkpoint51k_post
992    o change default to: useNHMTerms=.FALSE.
993     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
994       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
995     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
996        exp1, ideal_2D_oce
997     - change data file of oceanic exp (leave the results unchanged for now)
998       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
999    o set gravitySign automatically according to the vertical coordinate used
1000      (and change sign: back to "logical" value: +1 when R increases downward)
1001    o added an include barrier to the default CPP_OPTIONS.h and
1002      removed the #include "PACKAGES_CONFIG.h" from it
1003    o fix a bug in mom_fluxform (from chk51j_post)
1004    
1005    checkpoint51j_post
1006    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1007    o adjusted some flow directives (dynamics, thermodynamics)
1008    o added cubed-sphere case to test cost function
1009    o heckpoint_lev?_directives.h now include
1010      pkg-specific directives, whenever those are enabled.
1011    o Moving pkg-specific flow directives to corresponding pkg
1012      Moving pkg-specific differentiation list to corresponding pkg
1013      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1014      ---> conventions are
1015           - pkg_ad.flow
1016           - pkg_ad_diff.list
1017           - pkg_ad_check_lev?_dir.h
1018    
1019    checkpoint51i_post
1020    o merge of the branch-genmake2
1021      - knowingly breaks the older genmake
1022      - automatic generation of all ALLOW_${PKG_NAME} defines
1023      - new testreport supersedes older testscript
1024    o large number of package inclusion and header cleanups
1025    checkpoint51i_pre
1026    
1027    o new output for adjoin of global ocean vector invariant
1028    o fix for checkpoint of thermodynamic seaice and bulk_force
1029    o Steph gchem various cleanups
1030    
1031    checkpoint 51h_pre
1032    o fixed some single quotes
1033    o modify gchem pkg to be more versatile
1034    o modifications to clean up dic pkg
1035    o add pkg/cfc
1036    
1037    checkpoint51g_post
1038    o provide links for ARPACK and ADM*TLM
1039    o start removing verification/vero/
1040    o update AD-related stuff
1041      (in particular some IF-statements in model/src/ routines)
1042    o adding to verification/global_ocean.90x40x15/ adjoint of
1043      vector invariant setup
1044    
1045    checkpoint51f_post
1046    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1047    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1048      of tracer Green's fucntions for ocean inversion project.
1049    
1050    checkpoint51f_pre
1051    o Added on-the-fly spatial interpolation capability
1052        "USE_EXF_INTERPOLATION" to pkg/exf.
1053      - This is a temporary Cartesian-grid hack until
1054        the super-duper ESMF coupler becomes available.
1055      - See verification/global_with_exf/README for usage example.
1056      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1057        flags and modified pkg/seaice accordingly.
1058    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1059        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1060        non-local transport term.
1061    
1062    checkpoint51e_post
1063    o pkg/mom_vecinv:
1064      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1065      - add time-ave diagnostic of vorticity advection.
1066    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1067    o atmospheric geopotential: - include water vapor effect;
1068                                - use p^kappa in p* scaling.
1069    o land pkg: read initial state from files.
1070    o AIM : add stratospheric drag in the upper level
1071    
1072    checkpoint51d_post
1073    o change function ILNBLNK (=> last non-blank char.) to return zero
1074      (instead of the string length) when the string. char is empty
1075    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1076    o modif's to restore TAMC compatibility
1077      - avoid "_d" constructs in PARAMETER declarations
1078      - avoid interrupting lines by comment lines
1079    o Use cluster local disks for purely local I/O
1080      vs. globally visible disks needed for ctrl stuff
1081      (merged from ecco-branch)
1082      - new active_file_loc... and mdsio_..._loc routines
1083      - affected packages: autodiff, ctrl, grdchk, mdsio
1084    
1085    checkpoint51c_post
1086    o introducing integer flag debugLevel
1087      - debLevZero: suppress all output
1088      - debLevA: standard
1089      - debLevB: equivalent to current debugMode=.TRUE.
1090    o introducing pathname variable mdsioLocalDir for mdsio
1091      that can be specified at runtime
1092      (relevant for cluster I/O to local disk)
1093    `
1094    >>>checkpoint51b_post
1095    adjoint of ptracers
1096    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1097    o extended state in checkpoint_lev?, etc.
1098    o alternative ctrl/cost with tr1 or ptracer
1099    o new comlev1_bibj_ptracers
1100    o new ptracers.flow
1101    o made ptracers_forcing same as external_forcing_s
1102    o added verification for adjoint with ptracers
1103      - adm. grdchk fail so far
1104      - tlm. grdchk OK
1105      - checked tapelev/comlev recomputations: OK
1106    <<<checkpoint51b_pre
1107    
1108    checkpoint51a_post
1109    o added code for biogeochemistry package
1110      - new pkgs: dic, gchem
1111      - new subroutine in ptracers
1112    o modify code for biogeo packages
1113      - in model/src and pkg/ptracers
1114    
1115    checkpoint51
1116    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1117      - autodiff, ctrl, exf, grdchk, seaice
1118      kept separate packages
1119      - cost, ecco, obcs
1120    o updating verification/internal_wave, verification/lab_sea
1121      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1122    
1123    checkpoint50i_post
1124    o Preparing next differentiable checkpoint and sync
1125      of MAIN vs. ecco-branch
1126      - 1st step: this one is differentiable
1127      - 2nd step: next(! not this) checkpoint will have updated packages
1128                  from ecco-branch)
1129    
1130    checkpoint50h_post
1131    o new package "land": provide surface BC for AIM.
1132    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1133    o AIM: use true log-P extrapolation for near surface temp (= as in
1134        F.Molteni paper) ; update aim.5l_cs output.
1135    o New variable in PARM03 for more flexible pickups
1136    o somewhat cleaned package initialisation sequence for
1137      ctrl/ cost/ ecco/ in packages_... routines
1138    
1139    checkpoint50g_post
1140    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1141      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1142      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1143        made the default because of faster convergence than ADI
1144    
1145    checkpoint50f_post
1146    o exf totally restructured
1147      - replaced all exf_set_ routines by one generic exf_set_gen.F
1148        and made sure it's still differentiable
1149      - split exf_getffields.F into new exf_bulkformulae.F
1150      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1151      - updated adjoint/makefile and relevant verif. accordingly
1152    
1153    checkpoint50f_pre
1154     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1155          + change Evap over land. (update aim.5l_cs output)
1156     o added missing .cvsignores and made uniform across expts
1157     o changed configuration of tidal_basin_2d expt
1158     o added pkg/debug functions for tracing code in fatal crashes
1159     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1160     o new fn in pkg/monitor to stop model if solution grows too big
1161     o removed lots of single quotes from comments
1162    
1163    checkpoint50e_post
1164    o make KPP work with PTRACERS
1165     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1166       nearly a copy of kpp_transport_s
1167     - there is no analogue to SurfaceTendencyS, so I have to use
1168       gPtr(of the surface layer) instead
1169    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1170    checkpoint50e_pre
1171    
1172    checkpoint50d_post
1173    o change kpp output from multiple-record state files to single-record state
1174      files analogous to write_state.F
1175    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1176      analogous to the cg2d-related output.
1177    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1178      so that writing to internal file fn (with length 512) fails.
1179    checkpoint50d_pre
1180    
1181    checkpoint50c_post
1182    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1183    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1184    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1185    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1186    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1187    
1188    checkpoint50c_pre
1189    Merging from release1_p13:
1190    o bug fix for pkg/seaice dynamic solver
1191    o Added SEAICE_initialHEFF to pkg/seaice
1192    
1193    checkpoint50b_post
1194    o store u*,v* in gU,V instead of in guNm1,gvNm1
1195    o in order to put the momForcing out of the Adams-Bashforth:
1196      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1197      to timestep.F
1198    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1199    o re-generate output for highly sensitive test-exp:
1200       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1201    
1202    checkpoint50b_pre
1203    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1204    o corrected CPP option mismatch in exf_Bulk... functions for case
1205      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1206    
1207    checkpoint50a_post
1208    o Bug fix for merging between c50 and KPP.
1209      ikey was passed from thermodynamics to kpp_calc via
1210      common block rather than being recomputed in kpp_calc,
1211      in contradiction with new key itdkey.
1212      New key ikppkey created, and tamc.h headers updated.
1213    
1214    checkpoint50
1215    - 2nd step of merge with ecco-branch:
1216      merge changes in ecco-branch back into main trunk
1217    - bug fix in find_alpha
1218    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1219    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1220    - merged some sliced AD support routines
1221    
1222    checkpoint49
1223    merged from ecco-branch:
1224    o exf:
1225      - Enable initialisation of forcing fields to constant
1226        (runtime) values.
1227      - in exf_getffields.F
1228        Reduce i-/j-loop to interior domain, discarding overlaps.
1229        That also fixes wrong TAF-key computations for key_1, key_2
1230        with bulf formulae.
1231      - exf_init.F modify #ifdef for exf_init_evap
1232      - exf_getffieldrec.F, ctrl_getrec.F
1233        The following INT-usages are not safe:
1234          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1235          fldcount = int(fldsecs/fldperiod) + 1
1236        and were modified.
1237    o autodiff: checkpoint_lev...
1238      - updated storing for bulk formulae (some arrays were missing)
1239      - added state for seaice package
1240      - synchronized with main branch
1241    o DIVA:
1242      Modif.s in
1243      - the_main_loop.F
1244      - the_model_main.F
1245      and added cost_final_restore.F cost_final_store.F
1246      o With these changes, it is possible to fully separate
1247        the first forward run to compute the cost function (mdthe_main_loop)
1248        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1249        into separate model executions.
1250        This enables better tuning of DIVA to given queue sizes.
1251      o Loss of cost function value in consecutive DIVA runs is
1252        fixed by storing to 'costfinal' file.
1253      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1254        beginning/end of adjoint integration is accounted for.
1255      The current changes apply to TAF-1.4.26.
1256      TAF has one remaining bug, requiring one manual change
1257      (see MITgcm manual).
1258    o cal: synchronized between MAIN and ecco-branch
1259    
1260    checkpoint48i_post
1261    o Changes to restore differentiability of code w.r.t. previous tag
1262      (mostly adding new routines to make list and replacing
1263      pressure by totPhiHyd).
1264    o Updated and merged grdchk package
1265      - has both ADM and TLM checks
1266      - works for single- and multi-proc.
1267      - output cleaned
1268      - worked successfully for parallel DIVA
1269    o genmake:
1270      - Adding -platform=SP4
1271      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1272    o Modif. for DIVA:
1273      ctrl_unpack should not be called in intermediate DIVA interval.
1274      (similar thing would apply for active files such as
1275      tbar, sbar, psbar, which should not be reinitialised;
1276      only relevant for ecco-branch)
1277    
1278    checkpoint48h_post
1279    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1280    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1281    o Added SEAICE_initialHEFF to pkg/seaice
1282    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1283    
1284    checkpoint48g_post
1285    --- EOS:
1286    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1287      store total Potential in totPhyHyd for diagnostics & EOS.
1288    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1289    --- Pressure/geopotential gradient:
1290    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1291    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1292      ( changes results of global_ocean_pressure )
1293    o NLFS + z-coord.: add eta*Rho' contribution.
1294    o accurate phiHyd when using interface-W at the middle between 2 centers
1295     ( changes results of ideal_2D_oce )
1296    o includes r* 2nd term in potential gradient.
1297    
1298    checkpoint48f_post
1299    Merging from release1_p12:
1300    o Modifications for using pkg/exf with pkg/seaice
1301      - improved description of the various forcing configurations
1302      - added basic radiation bulk formulae to pkg/exf
1303      - units/sign fix for evap computation in exf_getffields.F
1304      - updated verification/global_with_exf/results/output.txt
1305    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1306      (SBO) core products, including oceanic mass, center-of-mass,
1307      angular, and bottom pressure (see pkg/sbo/README.sbo).
1308    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1309      to avoid negative values in shallow regions.
1310      - updated verification/natl_box/results/output.txt
1311      - updated verification/lab_sea/results/output.txt
1312    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1313    o Added useSingleCpuIO option (see PARAMS.h).
1314    o Updated useSingleCpuIO option in mdsio_writefield.F to
1315      work with multi-field files, e.g., for single-file pickup.
1316    o pkg/seaice:
1317      - bug fix in growth.F: QNET for no shortwave case
1318      - added HeffFile for specifying initial sea-ice thickness
1319      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1320    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1321      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1322    o pkg/seaice:
1323      - adjoint-friendly modifications
1324      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1325    
1326    checkpoint48e_post
1327    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1328    o dynamics: change definition of computational domain & adapt mom_fluxform
1329      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1330    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1331        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1332        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1333        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1334        inverted_barometer solid-body.cs-32x32x1
1335      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1336    
1337    checkpoint48d_post
1338    o in preparation for r*:
1339     a) use pre-computed gradient of hydrostatic potential:
1340        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1341     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1342        => affects results of glob_oce_pressure (different truncation error)  
1343      update output.txt of ideal_2D_oce & global_ocean_pressure
1344    
1345    checkpoint48d_pre
1346    o in preparation for r*:
1347      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1348      pass the 2 comp. of the grad. as arguments to momentum S/R.
1349      but for the moment, only used if it does not change the results.
1350    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1351    
1352    checkpoint48c_post
1353    Modifications in treatment of initial flux forcing controls
1354    to avoid extra storing of flux fields.
1355    
1356    checkpoint48c_pre
1357    o Added tidal_basin_2d experiment (currently 1D!)
1358    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1359    
1360    checkpoint48b_post
1361    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1362     (modification to pressure gradient not yet implemented)
1363    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1364      (for U & V) that are used for vertical advection of momentum.
1365    
1366    checkpoint48a_post
1367    o In preparation for r*, use temp. array to compute vertical transport
1368       in flux-form momentum pkg. => change results of few test-exp.
1369      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1370                        lab_sea, natl_box & plume_on_slope
1371    
1372    checkpoint48
1373    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1374    
1375    checkpoint47j_post
1376    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1377    o moved adexch from forward_step to addummy_in_stepping
1378    o added exch in ctrl_map_...
1379    o aveFreq.=0. at end of cost_final to avoid overwrite in
1380      reverse checkpointing loop
1381    o Yet more changes in gmredi:
1382      * adgmredi_calc_tensor
1383        avoiding all recomputation of gmredi_slope_limit
1384      * adgmredi_x/y/rtransport
1385        added flag for excessive storing to avoid recomp. of
1386        u/v/rtans, dTdx/y/z
1387        -> this is not really necessary and very memory-consuming
1388      * adgmredi_slope_psi:
1389        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1390      * gmredi_slope_limit
1391        re-activated full calculation of taperfct for case 'ac02'
1392    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1393    
1394    checkpoint47i_post
1395    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1396    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1397      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1398    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1399    o gmredi: fix few bugs.
1400    
1401    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1402    This will be a good checkpoint to plug into the ecco-branch.
1403    o few modif.'s to get latest version adjointed
1404      (mainly kick out code in ini_linear_phisurf)
1405    o modif's to run adjoint with exactConserv
1406    o case GM_BOLUS_ADVEC should be cleaned
1407      S/R gmredi_slope_psi should be cleaned
1408    o verification/carbon now has exactConserv=.TRUE.
1409    
1410    checkpoint47g_post
1411    o time-average AIM output: becomes independent from statvars time-average
1412      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1413    o After TAF bug fix:
1414      Tested adjoint of gmredi package.
1415      Tests were done with checkpoint47 rather than with latest
1416      checkpoint47f_post since the latter is broken for the adjoint
1417      verification/carbon/ contains both ADM and TLM gradient checks.
1418    Here they are, before they get changed/lost/stolen.
1419    Mostly modif.'s to fix numerical sensitivities.
1420    Gradient checks OK for
1421    - GM_taper_scheme:
1422      * clipping
1423      * ac02
1424      * linear
1425      * glw91
1426      * dm95
1427      * ldd97
1428    - GMREDI_OPTIONS:
1429      * GM_VISBECK_VARIABLE_K
1430      * GM_NON_UNITY_DIAGONAL
1431      * GM_EXTRA_DIAGONAL
1432      * GM_BOLUS_ADVEC
1433    in conjunction with data.gmredi parameters to be checked in
1434    in a few minutes under verification/carbon/code/
1435    
1436    checkpoint47f_post
1437    Merging from release1_p10:
1438    o modifications for using pkg/exf with pkg/seaice
1439      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1440        and SEAICE_EXTERNAL_FLUXES
1441      - pkg/exf CPP options EXF_READ_EVAP and
1442        EXF_NO_BULK_COMPUTATIONS
1443      - usage examples are Experiments 8 and 9 in
1444        verification/lab_sea/README
1445      - verification/lab_sea default experiment now uses
1446        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1447    
1448    checkpoint47e_post
1449    o created a tag prior to creating a branch
1450    
1451    checkpoint47d_post
1452    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1453      at the bottom boundary had an erroneous half slip boundary condition
1454    o added bottom drag and no slip boundary condition capabilities to
1455      oceanic pressure coordinates code
1456    o added new verification experiment global_ocean_pressure, this experiment is
1457      also described in the tutorial section of the manual
1458    checkpoint47d_pre
1459    
1460    checkpoint47c_post
1461    o Added a verification experiment for a global cubed-sphere ocean run
1462      -  verification/global_ocean.cubed32x32x30
1463      -  uses pkg/therm_seaice and pkg/bulk_forcing
1464    
1465    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1466    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1467      when using P-coordinate; only implemented for atmospheric config.
1468    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1469      NOTES: requires option NONLIN_FRSURF to be "#define".
1470    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1471    
1472    checkpoint47b_post
1473    Merging from release1_p9:
1474    o pkg/seaice
1475      - removed GOTO's and added taf directives
1476      - double precision constants to reduce the g77 (Linux)
1477        to F77 (SGI) differences reported in release1_p8
1478    o tools/genmake
1479      - added SGI options
1480    o verification/testscript
1481      - updated to that of checkpoint47a_post
1482    o verification/global_ocean.90x40x15/input/eedata
1483      - modified for SGI f77 compatibility
1484    o verification/lab_sea
1485      - added description of sea-ice model
1486      - added missing matlab routines
1487      - added test of thermodynamics parallelization
1488    
1489    checkpoint47a_post
1490    o new pkg: aim_v23
1491     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1492       for now, keep the same surface forcing as before.
1493     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1494     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1495     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1496    o add diagnostic of surface correction term in monitor output
1497    
1498    o bulk_force and therm_seaice
1499    - Two packages:  bulk_force (Bulk forcing)
1500      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1501    - Earlier integration from Stephaine Dutkiewicz
1502      and Patrick Heimbach.
1503    - Two ifdef statements for compile time,
1504       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1505    
1506    checkpoint47
1507    differentiable version of checkpoint46n_post
1508    o bug fix in quasihydrostaticterms
1509    o * "clean" adjoint code (in terms of extensive recomputations)
1510        can now be obtained for all GMREDI options (i.e. for
1511        - GM_VISBECK_VARIABLE_K
1512        - GM_NON_UNITY_DIAGONAL
1513        - GM_EXTRA_DIAGONAL
1514        - GM_BOLUS_ADVEC )
1515      * However, wrong gradient check problem remains unsolved.
1516      * New CPP options have been introduced for different
1517        tapering schemes
1518    o external_fields_load now part of differentiation list
1519    o pressure needs multiple storing;
1520      would be nice to have store_pressure at beginning or
1521      end of forward_step, e.g. by having phiHyd global (5-dim.)
1522      (NB: pressure is needed for certain cases in find_rho,
1523      which is also invoked through convective_adjustment).
1524    o recomputations in find_rho for cases
1525     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1526    o #define ATMOSPHERIC_LOADING should be differentiable
1527    o ini_forcing shifted to begining of initialise_varia
1528    o Incorporating QNVS line search routines into MITgcm
1529      (this is separate code, and therefore not under pkg)
1530      lsopt/, optim/
1531    o Updated verification/carbon/
1532      - #define GM_VISBECK_VARIABLE_K
1533      - GM_taper_scheme    = 'ldd97'    
1534    
1535    checkpoint46n_post
1536    Merging from release1_p8:
1537    o verification/natl_box:
1538      updating new external_fields_load routine
1539    o New package: pkg/seaice
1540      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1541      The sea-ice code is based on Hibler (1979-1980).
1542      Two sea-ice dynamic solvers, ADI and LSR, are included.
1543      In addition to computing prognostic sea-ice variables and diagnosing
1544      the forcing/external data fields that drive the ocean model,
1545      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1546      The implied surface heat flux is then stored in variable
1547      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1548      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1549      non-local transport term.  Because this call precedes model
1550      thermodynamics, temperature under sea-ice may not be "exactly" at
1551      the freezing point by the time theta is dumped or time-averaged.
1552      N.B.: fairly large differences in accuracy occur across
1553            different platforms/compilers; comparison between
1554            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1555            generated output gives:
1556       T           S           U           V
1557      C D M    c        m  s        m  s        m  s        m  s
1558      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1559      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1560      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1561    
1562      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1563    o GAD:
1564      - generated new common blocks to account for call of
1565        same gad routines with differing traceridentities
1566        (needed to modify tracerIdentity indices in GAD.h)
1567      - generated separate common blocks for case useCubedSphereExchange
1568        (Department of Futurology)
1569      - parameter lists to gmredi_?transport: added tracerIdentity
1570      - added new key indices to tamc.h
1571    o external_fields_load:
1572      - added this routine to TAF list
1573      - needed to make some common blocks global and additional storing
1574        along the same lines as exf package (checkpoint_lev?_directives.h)
1575    o exf:
1576      updated external forcing package
1577      - bug fixes carried over from ecco-branch
1578        (missing OBCS_OPTIONS.h in two routines)
1579      - enable easy to use "no forcing".
1580      - added exf I/O for atmospheric loading
1581      - added exf I/O for runoff data
1582      - transfered scaling between exf <-> MITgcm to exf namelist
1583    o Adding new verification experiment global_with_exf.
1584      This verification experiment is almost identical to the
1585      global_ocean.90x40x15 experiment, except that it uses
1586      the exf (and cal) package instead of the
1587      external_fields_load routine (cf README file).
1588    
1589    checkpoint46m_post
1590    o modified testscript to return -- when there are no lines of "%MON" output
1591    o added new flag "quasiHydrostatic" for QH mode
1592      and new routine quasihydrostaticterms()
1593    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1594      New routine: mom_u_coriolis_nh()
1595    o fixed sign of non-hydrostatic metric terms in u and v equations.
1596      Depend on correct sign of gravitySign.
1597    o added work.pc* to .cvsignore in aim directories using ifc
1598    o introduced flag for controllin non-hydrostatic metric terms
1599    o removed gravitySign from PARM04
1600    o switched to g77/ifc from pgf77 in aim experiments
1601    
1602    checkpoint46l_post
1603    o made convective adjustment work with pressure coordinates:
1604     - changed the direction of k-loop in convective_adjustment.F for the
1605       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1606     - adjusted the reference pressure k-index in convective_adjustment.F
1607     - adjusted the convection condition in convect.F (in analogy to
1608       calc_ivdc.F)
1609     - convective_adjustment no longer computes anything on the halos
1610     - removed the warnings about negative salinity from find_rho.F and
1611       find_alpha.F; instead the new routine look_for_neg_salinity, called
1612       at the beginning of find_rho, find_alpha, and find_beta, does a
1613       check of the entire slice, if CPP-option
1614       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1615    checkpoint46l_pre
1616    
1617    checkpoint46k_post
1618    o fixed the verification/global_ocean.90x40x15 experiment:
1619     - new bathymetry (the world according to A., JMC, and M.)
1620     - new initial fields and forcing fields (*.bin files)
1621     - new POLY3.COEFFS (for the next release one should switch to a full
1622       equation of state: JMD95P or MDJWF)
1623     - fixed several errors and redundancies in the data file
1624     - experiment uses looped cells
1625     - added matlab directory with diagnostic scripts for plotting of output
1626    
1627    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1628     - read AIM physics parameters from a file (data.aimphys)
1629     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1630    
1631    checkpoint46j_post
1632    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1633    o move wVel computation at the end of the time step, in S/R integr_continuity
1634    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1635    o update timeave pkg for wVel diagnostic.
1636    checkpoint46j_pre
1637    
1638    checkpoint46i_post
1639    o Clean up AIM package (and keep the results unchanged):
1640      include CPP_OPTION and use IMPLICT NONE in all routines ;
1641      declare all the variables _RL ; use _d 0 for all numerical constants.
1642      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1643    
1644    checkpoint46h_post
1645    o cleaned up the use of rhoNil and rhoConst.
1646      - rhoNil should only appear in the LINEAR equation of state, everywhere
1647        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1648        and the dynamical equations are all divided by rhoConst
1649    o introduced new parameter rhoConstFresh, a reference density of fresh
1650      water, to remove the fresh water flux's dependence on rhoNil. The default
1651      value is 999.8 kg/m^3
1652    o cleanup up external_forcing.F and external_forcing_surf.F
1653      - can now be used by both OCEANIC and OCEANICP
1654    checkpoint46h_pre
1655    
1656     Added code to convert surface volume flux (fresh water) into
1657     a mass flux when using P coordinates in the ocean (OCEANICP).
1658     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1659    
1660    checkpoint46g_post
1661    o Include a new diagnostic variable phiHydLow for the ocean model
1662      - in z-coordinates, it is the bottom pressure anomaly
1663      - in p-coordinates, it is the sea surface elevation
1664      - in both cases, these variable have global drift, reflecting the mass
1665        drift in z-coordinates and the volume drift in p-coordinates
1666      - included time averaging for phiHydLow, be aware of the drift!
1667    o depth-dependent computation of Bo_surf for pressure coordinates
1668      in the ocean (buoyancyRelation='OCEANICP')
1669      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1670        Theta, Salinity, and Pressure in the parameter list. This routine is
1671        presently contained in find_rho.F. This routine does not give the
1672        correct density for 'POLY3', which would be a z-dependent reference
1673        density.
1674    o cleaned up find_rho
1675      - removed obsolete 'eqn' from the parameter list.
1676    o added two new verification experiments: gop and goz
1677      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1678    checkpoint46g_pre
1679    
1680    checkpoint46f_post
1681    o Enable tangent linear (forward mode) gradient checks:
1682      - extended active file handling to g_... files
1683      - added TANGENT_SIMULATION to theSimulationMode
1684      - extended grdchk package accordingly
1685    o added tangent linear setup in verification/carbon/code_ftl
1686    o added adjoint setup in verification/front_relax/code_ad
1687    
1688    checkpoint46e_post
1689    o Added new equation of state -> MDJWF
1690      - EOS of McDougall et al., 2002, JAOT, submitted
1691      - caveat: the equation of state is only valid for a smaller (more
1692        realistic?) range of values than JMD95P/Z and UNESCO
1693      - added masks to the calculation of pressure in store_pressure
1694      - added more check values for density in check_eos (ini_eos.F), some of
1695        the old check values are out of the range of the MDJWF-eos, so don't
1696        expect perfect matches for those
1697    checkpoint46e_pre
1698    
1699    checkpoint46d_post
1700    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1701      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1702      case of pressure coordinates. eosType='JMD95Z' in
1703      combination with buoyancyRelation='OCEANICP' now causes an error.
1704    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1705      in find_alpha/beta.
1706    checkpoint46d_pre
1707    
1708    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1709      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1710    
1711    checkpoint46c_post
1712    o Changes necessary for ocean in p-coordinates
1713     -  Added new buoyancy relation = 'OCEANICP'
1714     -  Added new parameters = gravitySign (this used to be contained inside
1715        the factor dRdZ which I added when we first switched to R coordinates).
1716     X GM/Redi is not compatible (yet)
1717     X bottom drag and no-slip need to be debugged.
1718    checkpoint46c_pre
1719    
1720    checkpoint46b_post
1721    o Added new equation of state -> JMD95Z and JMD95P
1722      - EOS of Jackett and McDougall, 1995, JAOT
1723      - moved all EOS parameters into EOS.h
1724      - new routines ini_eos.F, store_pressure.F
1725    o Added UNESCO EOS, but not recommended because it requires
1726      in-situ temperature (see JMD95)
1727    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1728      unesco.f to be used with POLY3
1729    checkpoint46b_pre
1730    
1731    checkpoint46a_post
1732    o Added (atmospheric) pressure loading
1733      - new field in FFIELDS.h, etc...
1734      - new cpp flag ATMOSPHERIC_LOADING
1735    o Changed hFacC to _hFacC in calc_phi_hyd.F
1736    o Added SHORTWAVE_HEATING to some files for consistency
1737    checkpoint46a_pre
1738    
1739    checkpoint46
1740    further merges from release1_p5
1741    o new ctrl package
1742      - adopted from ECCO environment to enable optimization
1743      - added Eliassen Palm fluxes to controls
1744    o added Eliassen Palm flux controls to gradient check package
1745    o cost package
1746      - Compatible with new ctrl package
1747      - added Eliassen Palm cost hooks
1748      - modif's of existing cost functions
1749    o Adjoint-related bug fixes in kpp:
1750      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1751      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1752    o autodiff package
1753      - flow directives:
1754        + new for S/R do_the_model_io
1755        + enhanced for S/R checkpoint
1756        + new gmredi.flow
1757      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1758        disable adcommon.h/g_common.h by default.
1759      - fixed problem for adjoint of global_max
1760    o modified verification/carbon/
1761    o New setup for adjoint of global_ocean
1762    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1763    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1764    o incorporated hooks for sponge layer code (external_forcing.F)
1765    
1766    checkpoint45d_post
1767    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1768    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1769      (affects plume_on_slope "cg2d" output)
1770    o add new parameter deltaTfreesurf for free-surface time stepping
1771    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1772    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1773    o change phiMin in exp1 (to agree with documentation)
1774    o add new flags:
1775     - T,S forcing inside/outside Adams-Bashforth
1776     - turn off temp,salt advection and/or forcing
1777     - for each tracer, define internal flag for multiDimAdvection & A-B
1778    o monitor: change definition of KE to check conservation of Energy
1779    
1780    checkpoint45c_post
1781    o Removed f90 comments ("!")
1782    o Modified initialisations to enable exf package for MITgcm
1783      (without invoking ECCO_PACKAGE).
1784    o modifications to gradient check package (Martin Losch)
1785      - enable centered differences
1786      - modified format of standard output
1787    
1788    checkpoint45b_post
1789    o cleaned exchange calls in cg2d
1790    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1791    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1792      to configure barotropic setup (Martin Losch)
1793    o moved some initialisations within bi,bj loop in dynamics
1794      (TAF flow dependency)
1795    o in initialise_varia, moved call packages_init_variables
1796      before convective_adjustment_init
1797      (corresponding adjustment of TAF tape initialisation).
1798    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1799    
1800    checkpoint45a_post
1801    o compute Rho over the whole domain (extend iMin,jMin indices)
1802    o specific exchange for X-slice domain (case Ny=1)
1803    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1804    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1805    
1806    checkpoint44h_post = checkpoint45
1807    o Fix to restore differentiability:
1808      place at which packages_init_variables is called in
1809      initialise_varia is crucial for reverse control flow.
1810    o modifications in GMRedi to enable stable adjoint
1811      (corresponding modif's in thermodynamics, dynamics)
1812    o added missing hook for sponge layer code in external_forcing
1813    o modified test cost functions
1814    o storing in gad_advection (plus removal of write(0,*)!
1815    o missing headers TR1.h added in convective_adjustment routines
1816    o errorMessageUnit set non-equal zero in eeboot
1817      (conflict on some platforms, e.g. IBM SP3)
1818    o modified carbon verif.
1819    
1820    checkpoint44h_pre
1821    o vertical grid option: allow to put the Interface at the middle between
1822      2 cell-centers ; replace delZ in pkg/kpp by drF.
1823    o GM Advective form: Tracers are advected using the residual transport (=
1824      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1825    
1826    checkpoint44g_post
1827    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1828      results) ; ifdef missing in thermodynamics.F
1829    
1830    checkpoint44f_pre,checkpoint44f_post
1831    o added PTRACERS package
1832      This allows an arbitrary number of passive tracers to be integrated
1833      forward simultaneously with the dynamicaly model.
1834      + Implemented so far:
1835        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1836        - I/O and checkpointing
1837        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1838      + Not implemented so far:
1839        - KPP
1840        - OBCS
1841      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1842        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1843        line in data.pkg.
1844      + This package is disabled by default since it increases storage.
1845    
1846    
1847    o testscript: added -cleanup option
1848    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1849                 b) enable to filter 2D fields.
1850    
1851    checkpoint44e_pre,post
1852    o re-wrote convective adjustment to use pre-calculated weights
1853      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1854      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1855      Original calls to convect() still in place.
1856    
1857    chkpt44d_pre,post
1858    o added missing EXCLUDE_MONITOR flags
1859    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1860      (incompatible typ in MIN/MAX expressions caused problems
1861      on IBM SP3)
1862    o in genmake added variable MAKEDEPEND
1863      plus resetting for case SunOS
1864    o added timer_stats.c routine for IBM SP3
1865    o removed variables in dynamics
1866    !!! I forgot to create tag chkpt44d_pre !!!
1867    !!! But chkpt44d_pre = chkpt44c_post    !!!
1868    
1869    o real fresh water flux implemented with non-linear free-surface.
1870    
1871    chkpt44c_pre,post
1872    o few fix (mask in shap_s2, EmPmR in external_field_load,
1873      USE_NATURAL_BCS in solve_for_P);
1874    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1875    
1876    checkpoint44b_pre/_post
1877    o merge of relevant stuff from the ecco-branch:
1878      - genmake: removed $S64 overwrite for case SunOS
1879      - pkg/exf: update and corrections for field swapping and obcs
1880      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1881                  harmonized between ECCO and MITgcm
1882      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1883                      updated checkpointing_lev... lists for obcs
1884      - model/src: minor changes in forward_step, plot_field
1885                   added directive for divided adjoint in the_main_loop
1886      - pkg/mdsio: added mdsio_gl_slice
1887    
1888    o check parameters & config (chkpt44a_pre,post)
1889    o OBC and NonLin_FrSurf.
1890    
1891    checkpoint44
1892    o fix bug in mom_vi_del2uv
1893    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1894    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1895    o update AIM experiments (NCEP input files)
1896    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1897    o added some stuff for AD
1898    
1899    checkpoint43
1900    o added two new advection tests
1901    o added global 4x4 degree ocean test
1902    o added test of H&S94 with free surface on cube
1903    o some final mods for gradient check, adjoint,...
1904    
1905    checkpoint42
1906      Fixed AD-related problems:
1907    o Store directives up-to-date with re-arranged Adams-Bashforth
1908      (mainly thermodynamics.F)
1909    o New store directives for multi-dim. advection schemes
1910      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1911      * new common block and key passkey
1912      (mainly gad_advection.F)
1913    o Modified store directives for split of dynamics/thermodynamics
1914      for the case ALLOW_KPP
1915    o Cleaned argument list for timestep_tracer.F
1916    
1917    checkpoint41
1918    o re-formatted/added comments in prologues of key subroutines
1919      to work with protex
1920    
1921  checkpoint40  checkpoint40
1922  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
1923    o added FLT (floats) package from Arne along with demo. experiment
1924    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1925      implementation of forward-in-time forcing terms
1926    o more mods for non-linear free-surface including new variable
1927    o modified multi-dim method to work on cube
1928    o bug fix in KPP (from DM)
1929    
1930    checkpoint40pre9
1931    o added DST advection schemes
1932    o fix MPI bug on SGI's
1933    o modifications for non-linear free-surface
1934    o fixed conditionals for fixed flow/passive tracer only mode
1935    o added tension/strain form of stress tensor
1936    o changes to commenting of arguments for TAF/TAMC
1937    o added/updated many matlab scripts
1938    o added multi-dimensional advection method for tracers
1939      
1940    checkpoint40pre8
1941  o new package rw/  o new package rw/
1942    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
1943    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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