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revision 1.232 by jmc, Wed Dec 31 20:29:54 2003 UTC revision 1.373 by edhill, Thu Oct 21 13:38:45 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o give MNC the ability to create additional files rather than
7      exceeding a specified file size limit "MNC_MAX_FILESIZE"
8      - the default is just less than 2GB which is a practical limit
9        on many systems
10    o Compute the non-local term using either KPP vertical diffusivity (=default)
11       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
12    
13    checkpoint55h_post
14    o add verification test "vermix"
15    o remove all the *_ioinc flags and replace with the single global
16      outputTypesInclusive flag
17    o allow to set a vertical profile of vertical diffusivity for T & S
18    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
19    o useMNC moved from data.mnc to data.pkg
20    
21    checkpoint55g_post
22    o Renaming carbon AD experiments to comply with testreport conventions
23    o Updating adjoint of Held-Suarez hs94.1x64x5
24    o Fixing directives for non-ECCO forward_step, after ECCO directives
25      have been fixed to avoid recomp. of do_oceanic_phys
26      Works well for global_ocean.90x40x15,
27      but recomp. issue remains for carbon
28    o Updating adjoint output for natl_box_adjoint after
29      pkg/ecco has been modified (see taga c55d_post)
30    
31    checkpoint55f_post
32    o rename to timeave_init_fixed
33    
34    checkpoint55e_post
35    o some delicate re-shuffle of store directives to avoid one
36      extra call of do_oceanic_physics
37      affects ecco_the_main_loop.F, do_oceanic_physics.F
38      checkpoint_lev1_directives.h
39    o NB: this may break global_ocean adjoint temporarily,
40      but it is clear how to fix it. Will do later, need this now.
41    
42    checkpoint55d_post
43    o ECCO specific cost function terms (up-to-date with 1x1 runs)
44    o ecco_cost_weights is modified to 1x1 runs
45    o modifs to allow observations to be read in as
46      single file or yearly files
47    o enable to read exf forcing fields as either
48      single file or yearly files (flag useExfYearlyFields)
49    checkpoint55d_pre
50    
51    o switch between 2-level and 3-level checkpointing
52    o add ability of MNC to write local and "partial" (eg. 2D slices where
53      the full 3D field is never actually stored) arrays to NetCDF files
54      with the correct (that is, the complete multi-dimensional) set of
55      array indicies
56      - used in mom_vecinv() to write the diagFreq output
57      - tested (demonstrated) in verification/aim.5l_cs
58    o further mnc-ification
59      - add verification/lab_sea to the list with mnc setups
60      - fix undefined mnc v-names in cd_code
61      - add kpp to mnc output (both snapshot and timeave)
62    o non-hydrostatic code
63      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
64        in calc_gw.F
65      - defaults to viscAh
66      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
67        friction or Leith) in non-hydrostatic mode, as long as there is
68        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
69    o pkg/cost
70      extend simple cost functions to treat time mean quantities
71      (T,U,V) via cost_accumulate_state from cost_tile
72    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
73        be 2 times larger than the minimum size the advection scheme requires.
74        now get a perfect conservation of salt in advect_cs test-exp (updated)
75    o GGL90 (Gaspar's TKE mixed layer)
76      - add horizontal diffusion of TKE, requires exchanges in
77        do_fields_blocking_exchanges, horizontal diffusivity is zero by
78        default. In OPA there is no horizontal diffusion of TKE but the
79        mixing coefficients are computed from a horizontal average of TKE of
80        6 points or so. I think that diffusion has a little more physical
81        justification.
82      - clean up ggl90_calc in the hope of reducing memory usage (this hope
83        was in vain)
84      - mask tke-variable in ggl90_init
85    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
86    o fix biharmonic diffusion on CS-grid.
87    o more obcs stuff
88      - added obcs_external_fields_load as an alternative to the EXF-pkg option
89        for reading boundary values. This routine is called from
90        obcs_prescribe_read
91      - updated obcs_check
92      - changed sponge layer relaxation parameter units for days to seconds
93      - turned off sponge layer by default
94      - changed argument list of OBCS_CALC to myTime+deltaTclock
95      - fixed about 35 bugs in obcs_external_fields_load
96    
97    checkpoint55c_post
98    o obcs stuff
99      - new runtime flags useOBCSprescribe, useOBCSbalance
100      - re-arranged obcs_calc
101      - moved exf_getobcs to obcs_prescibe_read
102        obcs_prescibe_read is called after ORLANSKI stuff
103        and independent of it (executable can contain all).
104      - updated obcs_check
105      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
106        These may be necessary only if tangential velocities are
107        prescribed at OB, not sure, needs testing.
108    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
109      which simplifies the calls and passes the ifc check-bounds test
110    
111    checkpoint55b_post
112    o add a 2D scalar, Z location, exchange_2 routine.
113    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
114      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
115      affects advect_cs results (for the wrong reason): update output.txt
116    o use a more standard discretization for biharmonic viscosity ;
117     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
118      affects results of dome set-up: update output.txt
119    o fix gad_advection.F (CubedSphere part), back to version 1.23
120    o fix bug in mom_vi_del2uv.F (CubedSphere part).
121    
122    checkpoint55a_post
123    o merged code to
124      * prescribe/read time-dependent open boundaries
125        (works in conjunction with exf, cal)
126      * sponge layer code for open boundaries
127      * each boundary N/S/E/W now has its own CPP option
128        (healthy for the adjoint)
129    
130    checkpoint55
131    o up-to-date adjoint of previous breaks
132      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
133      - global_ocean_ebm: adjoint still needs fix (TLM ok)
134      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
135      - carbon: * remove tr1-related adjoint verification
136                * add ptracer as control variable
137    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
138      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
139    
140    checkpoint54f_post
141    o in verification/carbin/ remove experiment related to
142      ALLOW_PASSIVE_TRACER (array tr1 etc)
143      code_ad/ input_ad/ results_ad
144    
145    o add two new packages
146      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
147        + subject to optimization (memory)
148      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
149        + subject to reordering (many GOTOs in the original code)
150        + so far opps is called for every (i,j) point, and then operates in
151          the vertical; one may want to reorder the scheme in order operate in
152          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
153          fields)
154    o overhaul of IO so that we now have flags for MDSIO and/or MNC
155      - all verification tests compile and run with linux_ia32_g77
156      - defaults are compatible with current input files--nothing
157        should change if you were not previously using MNC
158      - MNC output has been added in numerous places (eg. timeave)
159        but there are still a few writes not yet do-able with MNC
160        (this is in progress)
161      - flags now allow for either/or/both use of MDSIO and MNC and
162        documentation will soon follow
163      - numerous small formatting cleanups for ProTeX
164    o add version info (via BUILD_INFO.h) to MNC and stdout
165    
166    checkpoint54e_post
167    o add two new packages
168      - pp81 (Packanowski and Philander, 1981), Richardson number and
169        stratification dependent mixing
170      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
171      - these scheme operate in a similar manner as KPP (without ghat, of
172        course), however there is only one diffusivity that is used for both
173        temperature and salinity (and passive tracers)ç
174    o add offline package
175    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
176      provided by Stephanie Dutkiewicz
177    o genmake2: add ability to search for C compilers and cleanup test output
178      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
179    
180    checkpoint54d_post
181    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
182    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
183      leading to additional shift by 5 days each year of integration
184       (i.e. leading to considerable offset over the years)
185    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
186    o start with no AB and no initial filtering (staggerTimeStep):
187      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
188    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
189      (external loading & cpl import/export stay in forward_step.F)
190    o update coupling interface to work with new staggerTimeStep
191    o change MDSIO ptracers_pickup.
192    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
193    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
194    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
195    
196    checkpoint54c_post
197    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
198      this affects (truncation error) output.txt of test-exp:
199       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
200    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
201    o change Qnet to always be the net heat flux, (+upward).
202      affects (truncation error) output of natl_box exp.: updated
203    o define the max number of passive tracers in PTRACERS_SIZE.h
204    o start to test mnc routinely in exp0
205    o add sea-ice loading (sIceLoad) as a new forcing field.
206    
207    checkpoint54b_post
208    o add testreport "-j JOBS" option for parallel builds (tested and pretty
209       impressive on Altix and Opteron systems)
210    o diagnostics can now write NetCDF files through the mnc package
211    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
212    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
213    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
214      affects (truncation error) output of lab_sea & natl_box exp.: updated
215    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
216    
217    checkpoint54a_post
218    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
219    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
220    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
221    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
222      + internal_wave (shift in writing cg2d_ini_res)
223    checkpoint54a_pre
224    
225    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
226      - modified verification/lab_sea and natl_box_adjoint accordingly
227    
228    checkpoint54
229    checkpoint53g_post
230    o prepare splitting of thermodynamics: store convect.counter in common block
231    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
232      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
233    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
234    o new parameter "nShapS": allow to treat differently S from T (nShapT)
235    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
236    o restore adjointability
237    
238    checkpoint53f_post
239    o modifications that affect AIM experiment results (update output.txt):
240      - no advection of S at top interface Nr (pkg/generic_advdiff)
241      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
242    o AIM pkg:
243      - include stability function into surf.Flux derivative relative to Tsurf
244      - calculate clear-sky radiation & surface temp. change (for diagnostics)
245    
246    checkpoint53e_post
247    o merged cylindrical coord configuration
248    o added rotating_tank experiment
249    checkpoint53e_pre
250    
251    checkpoint53d_post
252    o faulks upgraded: re-generate output.txt that have changed:
253       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
254    o Added Bryan and Lewis, 1979, vertical diffusivity profile
255    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
256    o added Sadourny discretization of Coriolis
257      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
258      - re-enabled use of omega3 (useAbsVorticity)
259    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
260      vector-invariant equations
261      - note: does *NOT* yet use same variable visc. for no-slip BC's.
262    o recoded the lateral boundary conditions for non-hydrostatic w, this time
263      hopefully without new bugs
264      - still to do: biharmonic friction for non-hydrostatic w
265    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
266    o regenerated output for global_ocean_ebm (using -ieee)
267    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
268      of mom_common/
269      - simple re-arrangement of instructions within computing loop
270    checkpoint53d_pre
271    
272    checkpoint53c_post
273    o new version of coupler for AIM+thSIce and Ocean models
274     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
275     - land: change Evaporation of snow
276     - aim with thSIce: fix bug in snow-precip.
277    o changes to calc_gw.F
278     - bug fix for w^2 term near the bottom boundary
279     - (hopefully) improve the lateral slip boundary condtions for use with
280        partial/looped cells
281      - because the bug fix changes two verification experiments anyway (exp5
282        and plume on slope), change the lateral boundary condition from half slip
283        to the value of no_slip_sides
284    o ebm package wasnt quite up to the parallel task. Fixed that.
285    o Adjoint of EBM package + verification
286      * TLM OK
287      * ADM not sufficient accuracy yet (needs further testing)
288    
289    checkpoint53b_post
290    o Commiting new energy balance model to repository
291      * package is pkg/ebm
292      * verif. is verification/global_ocean_ebm
293      * references are in ebm_driver.F
294    C      * X. Wang, P. Stone and J. Marotzke, 1999:
295    C        Global thermohaline circulation. Part I:
296    C        Sensitivity to atmospheric moisture transport.
297    C        J. Climate 12(1), 71-82
298    C      * X. Wang, P. Stone and J. Marotzke, 1999:
299    C        Global thermohaline circulation. Part II:
300    C        Sensitivity with interactive transport.
301    C        J. Climate 12(1), 83-91
302    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
303    C        Destabilization of the thermohaline circulation
304    C        by atmospheric eddy transports.
305    C        J. Climate 7(12), 1870-1882
306    o Will need long integration testing.
307    checkpoint53b_pre
308    
309    o created pkg/mom_common in preparation for variable viscosity code
310    o renamed and split ini_mnc_io
311    o pkg/land: only liquid water can diffuse or run-off
312    o AIM using land: soil wetness availability account for snow
313    o added printMapIncludesZeros to EEPARMS namelist
314    
315    checkpoint53a_post
316    o restore TAMC compatiility for exf_constants.h
317      (no usage of _d in .h)
318    o Additional storing in KPP in an attempt to fix
319      TAMC problem with adjoint of KPP code.
320      (no success...)
321      Identical code works fine with TAF.
322    o Fixed verification/natl_box_adjoint experiments.
323      Initial conditions for Experiments 4 and 5 are now
324      set to "SEAICE_initialHEFF=0", which is more reasonable,
325      and hence gives results closer to that of Experiment 2.
326      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
327    
328    checkpoint53
329    o stable checkpoint with up to date adjoint
330      TLM tests only run for 1st grdchk at the moment. Its unclear if
331      this is a code problem or a problem with resetting code for g_
332      variables that is being autogenerated wrong.
333      Otherwise:
334       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
335       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
336         are both still in chaos following their security messes.
337    
338    checkpoint52n_post
339    o various build (mostly genmake2) changes including:
340      - ability to build/run more easily within Cygwin and MacOS X
341      - more complicated Makefiles with a stronger dependence on Gnu Make
342    o pkg/seaice modifications
343      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
344        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
345        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
346      - changed proxy for geostrophic velocity and updated
347        verification/lab_sea/results/* accordingly
348      - removed ADI dynamic solver from pkg/seaice
349      - replaced all occurrences of 1/CSTICE or 1/CSUICE
350        they caused a segmentation fault under certain circumstances
351      - removed unused field WATR
352    o bug fix in exf-package:
353      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
354         now reflect that.
355    o small fixes in the cal-package:
356      - set reference date to first of January for the 'model'-calendar
357      - failing of cal_CheckDate in cal_FullDate now actually results in a
358        warning
359    o small modifications in exf-package to increase flexibility:
360      - change climtempfreeze from a constant to a runtime parameter that
361        is specified in data.exf_clim (default = -1.9)
362      - introduce runtime parameter windstressmax (default = 2.0) that is
363        specified in data.exf
364    o fix in pkg/thsice:
365      - update Evap (Tsf changes) to be consistent with Latent heat flux
366      - maintain snow precipitation unchanged (even if Tsf >=0).
367     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
368    
369    checkpoint52m_post
370    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
371      this does not change any of the results, because myIter=0 in swfrac always
372      lead to jwtype=2 (the default anyway), but the call makes little sense
373      as a default
374    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
375    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
376      atmospheric model (AIM) to use it ; add a "slab ocean" component.
377    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
378    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
379    o extending useSingleCpuIO option to work with new exch2 I/O format
380      - old-style, missing-tile I/O is still accessible by defining CPP
381        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
382    o monitor package can write to NetCDF files and/or STDOUT
383    o fix re-definition bug in MNC_GRID_INIT_ALL()
384    o doc/api_reference added
385      - a framework for building an API Reference Manual using all
386        the "protex" comments embedded in the code
387      - see pkg/generic_advdiff, pkg/mnc for examples
388    o MNC:
389      - make myThid the last argument for all subroutines
390      - new default for the grid files: NO halos
391      - add useMNC and other run-time flags
392      - separate per-file-group handling of the unlimited dimension
393      - early initialization of MNC w/ flags read at the eeboot stage
394        and lookup tables set in initialize_fixed
395      - write all MNC output to a freshly-created directory
396    o thermodynamics sea-ice (thsice) is now tested with testreport.
397    o test exp. advect_cs: use the standard cs32 grid ; update output.
398    o Added functionality to grdchk:
399      pick global i,j,k position (or nearest wet) where to perform check.
400    
401    checkpoint52l_post
402    o new land formulation:
403      a) use ground enthalpy as prognostic variable to ensure exact
404         energy conservation.
405      b) account for water temperature and for latent heat of freezing
406         in all processes (rain, run-off, ground storage)
407      c) compute surface and ground temperature implicitly.
408    o aim_v23 modification for new land model:
409      a) Treat separately land / ocean / sea-ice surface fluxes
410         to allow implicit computation of land & sea-ice surface temp.
411      b) add snow precipitation.
412    checkpoint52l_pre
413    
414    o fix problem (when 1 tile is empty) in min/max monitor.
415    o fix bug in timeAve (u,vZetatave in common block)
416    o no restoring terms under ice for pkg/seaice
417    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
418    o bug fix for pkg/seaice pickups
419    o change MNC call locations and add coordinate attributes
420    o mask vorticity at the corner ; affects global_ocean.cs output
421    o fix ini_curvilinear_grid ; test CS experiments with mpi
422    o aim.5l_cs: modify sea-ice fraction input file ; update output
423    o exf: Adding simple range check routine for exf fields after read
424    
425    checkpoint52k_post
426    o removed top-level directory "diags"
427      - we migrated these functions to pkg/timeave a long time ago
428    o fixed bug introduced in pkg/monitor
429    o accuracy ctrlprec = 32 insuffient for gradient checks using
430      averaged fields (I/O via cost_averages)
431      -> use ctrl.h in active_file*.F to control I/O precision.
432    o paramter list of CALL ADTHE_MAIN_LOOP
433    o added initial do_the_model_io to ecco
434    o set all ...Freq to zero after cost_final
435      taveFreq, dumpFreq, pChkptFreq
436    o MAIN and ECCO differentiability restored
437    
438    checkpoint52j_post
439    o fix nchklev in tamc.h for global_ocean...
440    o Bringing flow and store directives up-to-date
441    o Really weird thing!
442      call do_the_model_io from the_main_loop with parameters
443      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
444      TAF places a faulty re-call of initialise_varia
445      after cost_final call which should not be there!
446    checkpoint52j_pre
447    
448    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
449      error messages
450    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
451    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
452      debug output
453    o modfied mdsio_writefield.F to handle non-global files under exch2
454    o update AIM Cubed-Sphere exp (aim.5l_cs):
455      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
456    o update AIM Equatorial Channel exp:
457      use standard aim_v23 pkg and change the SST fields to be more realistic.
458    o globalFile now works with exch2
459    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
460      mon_vort3.F to make exch2 friendly with >1 tile per cube face
461    o limit timeave output for hi-res integrations
462    
463    checkpoint52i_post
464    o removed CPP_EEOPTIONS.h from verification/*/code
465    o updated the tiling for global_ocean_pressure
466    checkpoint52i_pre
467    
468    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
469      the old pkg/aim).
470    
471    checkpoint52h_pre
472    o shortened offending lines in exch2_send_rx?.template
473    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
474    o genmake2: add build & execute test for NetCDF code
475    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
476      old grid files, moved CPP_EEMACROS.h to pkg/exch2
477    o added useSingleCPUIO flag to monitor.F and mon_out.F
478    o added temporary hack for sea-ice dynamics on the cube:
479      metric terms are ignored and it is assumed that
480      there is no sea-ice on cube faces 1, 2, 4, and 5.
481    
482    checkpoint52f_post
483    o added exch2 cube routines to pkg/exch2
484    o modified hs94.cs-32x32x5 to use it
485    o added new grid files to hs94.cs-32x32x5
486    checkpoint52f_pre
487    
488    checkpoint52e_post
489    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
490      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
491    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
492      to work with implicit vertical advection and AB ;
493    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
494    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
495     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
496    checkpoint52e_pre
497    
498    o fix bug in impldiff when Nr=1 or Nr=2.
499  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
500  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
501  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2

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