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revision 1.207 by dimitri, Thu Nov 13 06:35:13 2003 UTC revision 1.435 by jmc, Wed Jan 19 02:21:28 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 modifications to make FREEZE flux visible to pkg/kpp  o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
7      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
8    o add saltFlux(+File) forcing capability with periodicExternalForcing
9    o allow to use pkg diagnostics for GM-Redi & ThSIce output
10    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
11    o improvements for the MNC output from DIAGNOSTICS:
12      - correct handling of the unlimitied dimension
13      - all dims now have associated coordinate variables
14      - variables located at U, V, and Corner ("Z") points are now written
15        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
16        *all* data points are output
17    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
18    o added pkg/seaice/seaice_monitor.F
19    o mdsio_readfield.F can now read files visible only to master MPI process.
20    o pkg/seaice: some test code for ice-modified ocean stress
21    o exf_getffields interpolation defaults to bilinear for all scalar forcing
22      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
23      spurious negative numbers for precipitation and humidity.  Will cause
24      some small numerical differences for integrations using pkg/exf/exf_interp.F.
25    o pkg/ctrl/
26      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
27        May be enabled via doPackDiag
28      *  introduce z-scaling of
29         + gradient (doZscalePack) and
30         + control (doZscaleUnpack)
31    o pkg/mdsio/
32      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
33      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
34    
35    checkpoint57b_post
36    o simplify options in diagnostics_fill arguments (remove weird combinations)
37    o fix MNC coordinate variables so that they now contain per-face index
38      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
39      general, EXCH2 grids are only aligned to a "local" coordinate system
40    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
41    o Implement instantaneous output within pkg diagnostics:
42      setting a negative frequency in data.diagnostics produces
43     "snap-shot" output (as opposed to time-average if freq > 0)
44    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
45      NOTE: change ptracer diagnostics name: use 2 characters to work with
46            more than 9 tracers. Add also diagnostics of advect & diffus flux.
47    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
48      becomes the coordinate variable for the 'T' dimension
49    o add CF-style coordinate variables to MNC
50      - just a first cut:  numbers are meaningless on the cubesphere and
51        missing along the T axis but otherwise it works!
52    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
53    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
54    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
55      this is based directly on what the model compute, so that the content of
56      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
57    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
58    o clean up build options files for SunOS, in particular
59      - remove -traditional from xmakedepend
60      - change -xarch=v9 to -xarch=native for f77
61      - restore use of make (not gmake)
62      - add CC=gcc if using g77
63    o changes per discussion of AM, JMC, & EH3 today:
64      - move redundant "grid" variables out of "state" -- in preparation of
65        creating proper CF-style coordinate variables and in recognition
66        that any/all grid variables can be easily copied (eg. w/NCO) from
67        the grid files into any of the other NetCDF files
68      - *always* output grid variables with MDSIO (this will eventually be
69        changed)
70      - output MNC grid file if useMNC is true
71    o every instance of _END_MASTER() has been found and replaced with
72      _END_MASTER( myThid ) in order to satisfy certain picky Sun
73      preprocessors
74    o re-arrange diagnostics pkg initialisation:
75     - allow each package to extend the available diagnostics list
76     - add some checking and fix small problems (multi-threaded, ...)
77     - new S/R diagnostics_fill (replace fill_diagnostics):
78       look through the short list of active diag. (instead of the long list)
79       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
80    
81    checkpoint57a_post
82    o this set of changes restores TAMC compatibility
83      tested for global_ocean.90x40x15 adjoint on trough
84      (what a pain)
85    
86    checkpoint57a_pre
87    o some modifs in tools/build_options for sunos
88    o call ctrl_pack for ctrl at end for optimcycle=0
89    
90    checkpoint57
91    o add horizontal bi-harmonic viscosity for vertical velocity
92      - new parameter viscA4W (defaults to viscA4)
93      - affects only non-hydrostatic code
94      - to be done: no-slip lateral boundary conditions
95    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
96    o implement Implicit Vertical advection for pTracers
97    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
98      (implemented also for implicit vertical diffusion & advection)
99    o OBCS: extend application of tracer open boundary conditions
100      to a strip beyond the boundary of width Olx/Oly
101    o add call monitor to TAF set of required calls (flow directives)
102      and include in natl_box_adjoint
103    o untangle a few ifdefs related to cost, ctrl, autodiff
104      untangel a few ALLOW_ECCO_OPTIMIZATION
105    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
106      (theta2, salt2 in ecco_cost_weights)
107    
108    checkpoint56c_post
109    o OBCS as control variables
110      - update ctrl_ad_diff.list, obcs_ad_diff.list
111      - remove balance of obcs controls from default
112      - fix index bug nobcs in ctrl_init
113      - fix dummy fields filen in ctrl_pack
114      - add dummy weights for obcs
115    o lsopt: comment out fort.94 output
116    o optim:
117      - remove unnecessary header files
118      - adjusted namelists
119      - add xerbla.F to Makefile
120    o exf:
121      - multiple modifications of exf_check_range
122      - unit change in exf_init_runoff from [m/year] to [m/s]
123    o mdsio:
124      - i/o-vector change debugLevel from debLevA to debLevB
125    
126    checkpoint56b_post
127    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
128      is called from DO_THE_MODEL_IO
129      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
130      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
131      - clean up PTRACERS_WRITE_TIMEAVE a little
132    o add another verification experiment that tests both the cfc-pkg and
133      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
134      reactive tendencies treated inline with regular timestepping
135    o testreport previously did a lousy job of comparing small numbers, so
136      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
137      implemented in the little c-progam tmp_cmpnum.c which is embedded in
138      testreport.
139    o ptracers_monitor: bug fix for MPI
140    
141    checkpoint56a_post
142    o GCHEM: finish reorganizating the package
143      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
144        (introduces another 3D-array for each passive tracer, but only if
145        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
146        gchemTendency is not needed because the timestep is done separately)
147      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
148      - GCHEM is now---more or less cleanly---separate from PTRACERS
149      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
150        so clear to me how that should be done in a general way.
151    o CFC: improve formatting of output in CFC_ATMOS
152    o PTRACERS:
153      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
154        that ALL experiments with ptracers enable can be checked. This makes
155        GCHEM_MONITOR obsolete.
156      - include a runtime parameter PTRACERS_monitorFreq that defaults to
157        monitorFreq
158      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
159    o add PTRACERS (PTR0[1-5]) to testreport output
160    o exf_check_range:
161      * default changed to .TRUE.
162      * will check values for niter0 if debLevA, every timestep if debLevB
163      * STOP in exf_check_range if 'out of range'
164      * range chosen generous to allow for potential extema
165      TBD: a version with stricter range
166           permitted range would be runtime parameters
167    o GMredi:
168      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
169      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
170      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
171    o GCHEM:
172      - move call to GCHEM_FORCING_SEP, so that it is now called before
173        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
174      - introduced a useGCHEM runtime flag and applied it everywhere.
175      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
176        this flag is now only visible within GCHEM-pkg routines.
177      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
178        be replaced by a 3D array that is computed before thermodynamics; for
179        this, the tracer ID iTracer had to be included into the parameter list
180        of ptracers_forcing
181      - set up forward_step to call gchem_forcing, that will replace
182        gchem_forcing_int in ptracers_forcing
183      - cleaning up
184    o small cleaning of exch2: remove files that are also in eesupp/src
185    
186    checkpoint56
187    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
188    o mnc: cleanup "full" files--fixes out-of-memory problem
189    o ECCO-GODAE
190      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
191      * fully merged and updated from SIO code
192        windstress sign change affects
193        - exf_inscal_[u/v]stress
194        - sign of xx_tau[u/v] adjustments
195        - signs in cost_scat
196      * ctrl_get_gen: avoid update of tau[u/v] for first few days
197      * natl_box_adjoint updated and compressed
198      * 2-level checkpoint switch added
199        (tested in EXP. 1 of natl_box_adjoint)
200      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
201    o SVD
202      * first complete, non-hacked version for SVD calculations
203      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
204        performed via direct access files admtlm_vector.it????
205        (via ctrl_[un]pack)
206      * optimcycle is used for ARPACK iteration counter
207        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
208      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
209        and add linear transforms where necessary
210      * controls are initial/final SST, SSS (can be extended; need to check
211        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
212    o mdsio: filename info to both stderr, stdout
213    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
214      from sign change
215    
216    checkpoint55j_post
217    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
218      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
219    o add consistent build directories and .cvsignore files to verification
220    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
221    o make all subroutines 30 or less characters in length for certain older
222      compilers to work (a thorough search only turns up two routines in
223      pkg/ptracers)
224    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
225      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
226    
227    checkpoint55i_post
228    o change arrays for total vertical diffusivity (2.D if explicit,
229      3.D if implicit) ; each ptracer uses its own background value.
230    o added mnc/NetCDF output capability to ocn_compon_interf
231      - added bits to verification/cpl_aim+ocn so that it can run on
232        ITRDA and other clusters without the mpirun "-wd" option
233    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
234      configuration
235    o give MNC the ability to create additional files rather than
236      exceeding a specified file size limit "MNC_MAX_FILESIZE"
237      - the default is just less than 2GB which is a practical limit
238        on many systems
239    o Compute the non-local term using either KPP vertical diffusivity (=default)
240       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
241    
242    checkpoint55h_post
243    o add verification test "vermix"
244    o remove all the *_ioinc flags and replace with the single global
245      outputTypesInclusive flag
246    o allow to set a vertical profile of vertical diffusivity for T & S
247    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
248    o useMNC moved from data.mnc to data.pkg
249    
250    checkpoint55g_post
251    o Renaming carbon AD experiments to comply with testreport conventions
252    o Updating adjoint of Held-Suarez hs94.1x64x5
253    o Fixing directives for non-ECCO forward_step, after ECCO directives
254      have been fixed to avoid recomp. of do_oceanic_phys
255      Works well for global_ocean.90x40x15,
256      but recomp. issue remains for carbon
257    o Updating adjoint output for natl_box_adjoint after
258      pkg/ecco has been modified (see taga c55d_post)
259    
260    checkpoint55f_post
261    o rename to timeave_init_fixed
262    
263    checkpoint55e_post
264    o some delicate re-shuffle of store directives to avoid one
265      extra call of do_oceanic_physics
266      affects ecco_the_main_loop.F, do_oceanic_physics.F
267      checkpoint_lev1_directives.h
268    o NB: this may break global_ocean adjoint temporarily,
269      but it is clear how to fix it. Will do later, need this now.
270    
271    checkpoint55d_post
272    o ECCO specific cost function terms (up-to-date with 1x1 runs)
273    o ecco_cost_weights is modified to 1x1 runs
274    o modifs to allow observations to be read in as
275      single file or yearly files
276    o enable to read exf forcing fields as either
277      single file or yearly files (flag useExfYearlyFields)
278    checkpoint55d_pre
279    
280    o switch between 2-level and 3-level checkpointing
281    o add ability of MNC to write local and "partial" (eg. 2D slices where
282      the full 3D field is never actually stored) arrays to NetCDF files
283      with the correct (that is, the complete multi-dimensional) set of
284      array indicies
285      - used in mom_vecinv() to write the diagFreq output
286      - tested (demonstrated) in verification/aim.5l_cs
287    o further mnc-ification
288      - add verification/lab_sea to the list with mnc setups
289      - fix undefined mnc v-names in cd_code
290      - add kpp to mnc output (both snapshot and timeave)
291    o non-hydrostatic code
292      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
293        in calc_gw.F
294      - defaults to viscAh
295      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
296        friction or Leith) in non-hydrostatic mode, as long as there is
297        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
298    o pkg/cost
299      extend simple cost functions to treat time mean quantities
300      (T,U,V) via cost_accumulate_state from cost_tile
301    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
302        be 2 times larger than the minimum size the advection scheme requires.
303        now get a perfect conservation of salt in advect_cs test-exp (updated)
304    o GGL90 (Gaspar's TKE mixed layer)
305      - add horizontal diffusion of TKE, requires exchanges in
306        do_fields_blocking_exchanges, horizontal diffusivity is zero by
307        default. In OPA there is no horizontal diffusion of TKE but the
308        mixing coefficients are computed from a horizontal average of TKE of
309        6 points or so. I think that diffusion has a little more physical
310        justification.
311      - clean up ggl90_calc in the hope of reducing memory usage (this hope
312        was in vain)
313      - mask tke-variable in ggl90_init
314    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
315    o fix biharmonic diffusion on CS-grid.
316    o more obcs stuff
317      - added obcs_external_fields_load as an alternative to the EXF-pkg option
318        for reading boundary values. This routine is called from
319        obcs_prescribe_read
320      - updated obcs_check
321      - changed sponge layer relaxation parameter units for days to seconds
322      - turned off sponge layer by default
323      - changed argument list of OBCS_CALC to myTime+deltaTclock
324      - fixed about 35 bugs in obcs_external_fields_load
325    
326    checkpoint55c_post
327    o obcs stuff
328      - new runtime flags useOBCSprescribe, useOBCSbalance
329      - re-arranged obcs_calc
330      - moved exf_getobcs to obcs_prescibe_read
331        obcs_prescibe_read is called after ORLANSKI stuff
332        and independent of it (executable can contain all).
333      - updated obcs_check
334      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
335        These may be necessary only if tangential velocities are
336        prescribed at OB, not sure, needs testing.
337    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
338      which simplifies the calls and passes the ifc check-bounds test
339    
340    checkpoint55b_post
341    o add a 2D scalar, Z location, exchange_2 routine.
342    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
343      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
344      affects advect_cs results (for the wrong reason): update output.txt
345    o use a more standard discretization for biharmonic viscosity ;
346     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
347      affects results of dome set-up: update output.txt
348    o fix gad_advection.F (CubedSphere part), back to version 1.23
349    o fix bug in mom_vi_del2uv.F (CubedSphere part).
350    
351    checkpoint55a_post
352    o merged code to
353      * prescribe/read time-dependent open boundaries
354        (works in conjunction with exf, cal)
355      * sponge layer code for open boundaries
356      * each boundary N/S/E/W now has its own CPP option
357        (healthy for the adjoint)
358    
359    checkpoint55
360    o up-to-date adjoint of previous breaks
361      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
362      - global_ocean_ebm: adjoint still needs fix (TLM ok)
363      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
364      - carbon: * remove tr1-related adjoint verification
365                * add ptracer as control variable
366    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
367      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
368    
369    checkpoint54f_post
370    o in verification/carbin/ remove experiment related to
371      ALLOW_PASSIVE_TRACER (array tr1 etc)
372      code_ad/ input_ad/ results_ad
373    
374    o add two new packages
375      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
376        + subject to optimization (memory)
377      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
378        + subject to reordering (many GOTOs in the original code)
379        + so far opps is called for every (i,j) point, and then operates in
380          the vertical; one may want to reorder the scheme in order operate in
381          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
382          fields)
383    o overhaul of IO so that we now have flags for MDSIO and/or MNC
384      - all verification tests compile and run with linux_ia32_g77
385      - defaults are compatible with current input files--nothing
386        should change if you were not previously using MNC
387      - MNC output has been added in numerous places (eg. timeave)
388        but there are still a few writes not yet do-able with MNC
389        (this is in progress)
390      - flags now allow for either/or/both use of MDSIO and MNC and
391        documentation will soon follow
392      - numerous small formatting cleanups for ProTeX
393    o add version info (via BUILD_INFO.h) to MNC and stdout
394    
395    checkpoint54e_post
396    o add two new packages
397      - pp81 (Packanowski and Philander, 1981), Richardson number and
398        stratification dependent mixing
399      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
400      - these scheme operate in a similar manner as KPP (without ghat, of
401        course), however there is only one diffusivity that is used for both
402        temperature and salinity (and passive tracers)ç
403    o add offline package
404    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
405      provided by Stephanie Dutkiewicz
406    o genmake2: add ability to search for C compilers and cleanup test output
407      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
408    
409    checkpoint54d_post
410    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
411    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
412      leading to additional shift by 5 days each year of integration
413       (i.e. leading to considerable offset over the years)
414    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
415    o start with no AB and no initial filtering (staggerTimeStep):
416      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
417    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
418      (external loading & cpl import/export stay in forward_step.F)
419    o update coupling interface to work with new staggerTimeStep
420    o change MDSIO ptracers_pickup.
421    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
422    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
423    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
424    
425    checkpoint54c_post
426    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
427      this affects (truncation error) output.txt of test-exp:
428       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
429    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
430    o change Qnet to always be the net heat flux, (+upward).
431      affects (truncation error) output of natl_box exp.: updated
432    o define the max number of passive tracers in PTRACERS_SIZE.h
433    o start to test mnc routinely in exp0
434    o add sea-ice loading (sIceLoad) as a new forcing field.
435    
436    checkpoint54b_post
437    o add testreport "-j JOBS" option for parallel builds (tested and pretty
438       impressive on Altix and Opteron systems)
439    o diagnostics can now write NetCDF files through the mnc package
440    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
441    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
442    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
443      affects (truncation error) output of lab_sea & natl_box exp.: updated
444    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
445    
446    checkpoint54a_post
447    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
448    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
449    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
450    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
451      + internal_wave (shift in writing cg2d_ini_res)
452    checkpoint54a_pre
453    
454    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
455      - modified verification/lab_sea and natl_box_adjoint accordingly
456    
457    checkpoint54
458    checkpoint53g_post
459    o prepare splitting of thermodynamics: store convect.counter in common block
460    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
461      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
462    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
463    o new parameter "nShapS": allow to treat differently S from T (nShapT)
464    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
465    o restore adjointability
466    
467    checkpoint53f_post
468    o modifications that affect AIM experiment results (update output.txt):
469      - no advection of S at top interface Nr (pkg/generic_advdiff)
470      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
471    o AIM pkg:
472      - include stability function into surf.Flux derivative relative to Tsurf
473      - calculate clear-sky radiation & surface temp. change (for diagnostics)
474    
475    checkpoint53e_post
476    o merged cylindrical coord configuration
477    o added rotating_tank experiment
478    checkpoint53e_pre
479    
480    checkpoint53d_post
481    o faulks upgraded: re-generate output.txt that have changed:
482       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
483    o Added Bryan and Lewis, 1979, vertical diffusivity profile
484    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
485    o added Sadourny discretization of Coriolis
486      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
487      - re-enabled use of omega3 (useAbsVorticity)
488    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
489      vector-invariant equations
490      - note: does *NOT* yet use same variable visc. for no-slip BC's.
491    o recoded the lateral boundary conditions for non-hydrostatic w, this time
492      hopefully without new bugs
493      - still to do: biharmonic friction for non-hydrostatic w
494    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
495    o regenerated output for global_ocean_ebm (using -ieee)
496    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
497      of mom_common/
498      - simple re-arrangement of instructions within computing loop
499    checkpoint53d_pre
500    
501    checkpoint53c_post
502    o new version of coupler for AIM+thSIce and Ocean models
503     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
504     - land: change Evaporation of snow
505     - aim with thSIce: fix bug in snow-precip.
506    o changes to calc_gw.F
507     - bug fix for w^2 term near the bottom boundary
508     - (hopefully) improve the lateral slip boundary condtions for use with
509        partial/looped cells
510      - because the bug fix changes two verification experiments anyway (exp5
511        and plume on slope), change the lateral boundary condition from half slip
512        to the value of no_slip_sides
513    o ebm package wasnt quite up to the parallel task. Fixed that.
514    o Adjoint of EBM package + verification
515      * TLM OK
516      * ADM not sufficient accuracy yet (needs further testing)
517    
518    checkpoint53b_post
519    o Commiting new energy balance model to repository
520      * package is pkg/ebm
521      * verif. is verification/global_ocean_ebm
522      * references are in ebm_driver.F
523    C      * X. Wang, P. Stone and J. Marotzke, 1999:
524    C        Global thermohaline circulation. Part I:
525    C        Sensitivity to atmospheric moisture transport.
526    C        J. Climate 12(1), 71-82
527    C      * X. Wang, P. Stone and J. Marotzke, 1999:
528    C        Global thermohaline circulation. Part II:
529    C        Sensitivity with interactive transport.
530    C        J. Climate 12(1), 83-91
531    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
532    C        Destabilization of the thermohaline circulation
533    C        by atmospheric eddy transports.
534    C        J. Climate 7(12), 1870-1882
535    o Will need long integration testing.
536    checkpoint53b_pre
537    
538    o created pkg/mom_common in preparation for variable viscosity code
539    o renamed and split ini_mnc_io
540    o pkg/land: only liquid water can diffuse or run-off
541    o AIM using land: soil wetness availability account for snow
542    o added printMapIncludesZeros to EEPARMS namelist
543    
544    checkpoint53a_post
545    o restore TAMC compatiility for exf_constants.h
546      (no usage of _d in .h)
547    o Additional storing in KPP in an attempt to fix
548      TAMC problem with adjoint of KPP code.
549      (no success...)
550      Identical code works fine with TAF.
551    o Fixed verification/natl_box_adjoint experiments.
552      Initial conditions for Experiments 4 and 5 are now
553      set to "SEAICE_initialHEFF=0", which is more reasonable,
554      and hence gives results closer to that of Experiment 2.
555      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
556    
557    checkpoint53
558    o stable checkpoint with up to date adjoint
559      TLM tests only run for 1st grdchk at the moment. Its unclear if
560      this is a code problem or a problem with resetting code for g_
561      variables that is being autogenerated wrong.
562      Otherwise:
563       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
564       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
565         are both still in chaos following their security messes.
566    
567    checkpoint52n_post
568    o various build (mostly genmake2) changes including:
569      - ability to build/run more easily within Cygwin and MacOS X
570      - more complicated Makefiles with a stronger dependence on Gnu Make
571    o pkg/seaice modifications
572      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
573        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
574        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
575      - changed proxy for geostrophic velocity and updated
576        verification/lab_sea/results/* accordingly
577      - removed ADI dynamic solver from pkg/seaice
578      - replaced all occurrences of 1/CSTICE or 1/CSUICE
579        they caused a segmentation fault under certain circumstances
580      - removed unused field WATR
581    o bug fix in exf-package:
582      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
583         now reflect that.
584    o small fixes in the cal-package:
585      - set reference date to first of January for the 'model'-calendar
586      - failing of cal_CheckDate in cal_FullDate now actually results in a
587        warning
588    o small modifications in exf-package to increase flexibility:
589      - change climtempfreeze from a constant to a runtime parameter that
590        is specified in data.exf_clim (default = -1.9)
591      - introduce runtime parameter windstressmax (default = 2.0) that is
592        specified in data.exf
593    o fix in pkg/thsice:
594      - update Evap (Tsf changes) to be consistent with Latent heat flux
595      - maintain snow precipitation unchanged (even if Tsf >=0).
596     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
597    
598    checkpoint52m_post
599    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
600      this does not change any of the results, because myIter=0 in swfrac always
601      lead to jwtype=2 (the default anyway), but the call makes little sense
602      as a default
603    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
604    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
605      atmospheric model (AIM) to use it ; add a "slab ocean" component.
606    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
607    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
608    o extending useSingleCpuIO option to work with new exch2 I/O format
609      - old-style, missing-tile I/O is still accessible by defining CPP
610        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
611    o monitor package can write to NetCDF files and/or STDOUT
612    o fix re-definition bug in MNC_GRID_INIT_ALL()
613    o doc/api_reference added
614      - a framework for building an API Reference Manual using all
615        the "protex" comments embedded in the code
616      - see pkg/generic_advdiff, pkg/mnc for examples
617    o MNC:
618      - make myThid the last argument for all subroutines
619      - new default for the grid files: NO halos
620      - add useMNC and other run-time flags
621      - separate per-file-group handling of the unlimited dimension
622      - early initialization of MNC w/ flags read at the eeboot stage
623        and lookup tables set in initialize_fixed
624      - write all MNC output to a freshly-created directory
625    o thermodynamics sea-ice (thsice) is now tested with testreport.
626    o test exp. advect_cs: use the standard cs32 grid ; update output.
627    o Added functionality to grdchk:
628      pick global i,j,k position (or nearest wet) where to perform check.
629    
630    checkpoint52l_post
631    o new land formulation:
632      a) use ground enthalpy as prognostic variable to ensure exact
633         energy conservation.
634      b) account for water temperature and for latent heat of freezing
635         in all processes (rain, run-off, ground storage)
636      c) compute surface and ground temperature implicitly.
637    o aim_v23 modification for new land model:
638      a) Treat separately land / ocean / sea-ice surface fluxes
639         to allow implicit computation of land & sea-ice surface temp.
640      b) add snow precipitation.
641    checkpoint52l_pre
642    
643    o fix problem (when 1 tile is empty) in min/max monitor.
644    o fix bug in timeAve (u,vZetatave in common block)
645    o no restoring terms under ice for pkg/seaice
646    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
647    o bug fix for pkg/seaice pickups
648    o change MNC call locations and add coordinate attributes
649    o mask vorticity at the corner ; affects global_ocean.cs output
650    o fix ini_curvilinear_grid ; test CS experiments with mpi
651    o aim.5l_cs: modify sea-ice fraction input file ; update output
652    o exf: Adding simple range check routine for exf fields after read
653    
654    checkpoint52k_post
655    o removed top-level directory "diags"
656      - we migrated these functions to pkg/timeave a long time ago
657    o fixed bug introduced in pkg/monitor
658    o accuracy ctrlprec = 32 insuffient for gradient checks using
659      averaged fields (I/O via cost_averages)
660      -> use ctrl.h in active_file*.F to control I/O precision.
661    o paramter list of CALL ADTHE_MAIN_LOOP
662    o added initial do_the_model_io to ecco
663    o set all ...Freq to zero after cost_final
664      taveFreq, dumpFreq, pChkptFreq
665    o MAIN and ECCO differentiability restored
666    
667    checkpoint52j_post
668    o fix nchklev in tamc.h for global_ocean...
669    o Bringing flow and store directives up-to-date
670    o Really weird thing!
671      call do_the_model_io from the_main_loop with parameters
672      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
673      TAF places a faulty re-call of initialise_varia
674      after cost_final call which should not be there!
675    checkpoint52j_pre
676    
677    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
678      error messages
679    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
680    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
681      debug output
682    o modfied mdsio_writefield.F to handle non-global files under exch2
683    o update AIM Cubed-Sphere exp (aim.5l_cs):
684      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
685    o update AIM Equatorial Channel exp:
686      use standard aim_v23 pkg and change the SST fields to be more realistic.
687    o globalFile now works with exch2
688    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
689      mon_vort3.F to make exch2 friendly with >1 tile per cube face
690    o limit timeave output for hi-res integrations
691    
692    checkpoint52i_post
693    o removed CPP_EEOPTIONS.h from verification/*/code
694    o updated the tiling for global_ocean_pressure
695    checkpoint52i_pre
696    
697    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
698      the old pkg/aim).
699    
700    checkpoint52h_pre
701    o shortened offending lines in exch2_send_rx?.template
702    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
703    o genmake2: add build & execute test for NetCDF code
704    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
705      old grid files, moved CPP_EEMACROS.h to pkg/exch2
706    o added useSingleCPUIO flag to monitor.F and mon_out.F
707    o added temporary hack for sea-ice dynamics on the cube:
708      metric terms are ignored and it is assumed that
709      there is no sea-ice on cube faces 1, 2, 4, and 5.
710    
711    checkpoint52f_post
712    o added exch2 cube routines to pkg/exch2
713    o modified hs94.cs-32x32x5 to use it
714    o added new grid files to hs94.cs-32x32x5
715    checkpoint52f_pre
716    
717    checkpoint52e_post
718    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
719      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
720    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
721      to work with implicit vertical advection and AB ;
722    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
723    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
724     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
725    checkpoint52e_pre
726    
727    o fix bug in impldiff when Nr=1 or Nr=2.
728    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
729    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
730    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
731      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
732    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
733    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
734    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
735    
736    checkpoint52d_post
737    o re-tiled many expts to allow comparison in multi-processor mode
738      - updated output accordingly
739      - changed hs94.128x64x5 to use intial T from file rather than use the
740        random number generator
741    o add infrastructure in model routines for fizhi and gridalt packages
742    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
743    o changes to permit hi-res, cubed-sphere, configuration
744      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
745      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
746      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
747        of surface winds for the cube
748      (A verification experiment, based on global_ocean.cs32x15, but with
749       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
750       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
751       complete with example surface forcing files and matlab scripts to look
752       at the output and compare it with that of global_ocean.cs32x15.)
753    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
754       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
755       to conform to the common rule.
756    o check-in the first version of the coupler + interfaces for multi-components
757       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
758       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
759       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
760       - ocean and atmos. share the same horizontal grid (no interpolation).
761       - exchanges between component and coupler is done in forward_step
762    o new verification experiment, cpl_aim+ocn:
763       coupled ocean - AIM atmosphere on cs32 grid.
764    
765    checkpoint52d_pre
766    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
767    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
768    
769    checkpoint52c_post
770    o Fixing OPTIONS files for use of exf:
771      - ALLOW_ECCO not needed
772      - ECCO_CPPOPTIONS.h should not be included from
773        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
774        as has been the case in the past
775      - All cal/exf related options are currently set in
776        single header file. Should remain so until we
777        agree on a consistent new policy.
778    o Removed all CPP options for cal package.
779      cal has no more CPP options.
780    o modified STOREs in GAD_ADVECTION
781    o corrected key comp. for passkey
782    
783    checkpoint52b_post
784    o new version: "thsice" of thermodynamic sea-ice pkg:
785     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
786     - modify fluxes but do not change theta directly;
787     - light cleaning of bulk_force pkg (still needed with thsice).
788     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
789       + output_thsice.txt to test thsice & bulk_force pkgs.
790    o put back grid & coriolis monitor output.
791    checkpoint52b_pre
792    
793    o call "do_the_model_io" at the beginning (=> dump initial state)
794    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
795    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
796      (need info on NUMBER_OF_PTRACERS)
797    o missing PTRACERS headers in some routines
798    o default tamc.h in pkg/autodiff supposed to crash
799      to ensure proper customization
800    
801    checkpoint52a_post
802    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
803    - moved surfaceTendencyTice from pkg/seaice to main code    - moved surfaceTendencyTice from pkg/seaice to main code
804    - FREEZE moved to FORWARD_STEP    - subroutine FREEZE_SURFACE now limits only surface temperature
805    - subroutine FREEZE now limits only surface temperature      and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
806      this means new output.txt for global_ocean.90x40x15,      => new output.txt for global_ocean.cs32x15 & global_with_exf
807      global_ocean.cs32x15, and global_with_exf, but note    - keep the old version of FREEZE for backward compatibility;
808      that results for these three experiments remain      global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
809      bit-identical to before if allowFreezing=.FALSE.    - corresponding modifs for TAF directives
810  o added surface flux output variables to TIMEAVE_STATVARS  o added surface flux output variables to TIMEAVE_STATVARS
811  o time-averaged output for pkg/ptracers  o time-averaged output for pkg/ptracers
812    o fix problem with ECCO-related divided adjoint
813      snapshot file was missing some ad-variables,
814      but no warning issued by TAF
815    
816  checkpoint52a_pre  checkpoint52a_pre
817  o some bug fixes for #undef REAL4_IS_SLOW  o some bug fixes for #undef REAL4_IS_SLOW

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