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revision 1.113 by dimitri, Sat Dec 28 10:11:10 2002 UTC revision 1.400 by mlosch, Fri Dec 3 16:47:45 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 OBCS: extend application of tracer open boundary conditions
7      to a strip beyond the boundary of width Olx/Oly
8    
9    checkpoint56c_post
10    o OBCS as control variables
11      - update ctrl_ad_diff.list, obcs_ad_diff.list
12      - remove balance of obcs controls from default
13      - fix index bug nobcs in ctrl_init
14      - fix dummy fields filen in ctrl_pack
15      - add dummy weights for obcs
16    o lsopt: comment out fort.94 output
17    o optim:
18      - remove unnecessary header files
19      - adjusted namelists
20      - add xerbla.F to Makefile
21    o exf:
22      - multiple modifications of exf_check_range
23      - unit change in exf_init_runoff from [m/year] to [m/s]
24    o mdsio:
25      - i/o-vector change debugLevel from debLevA to debLevB
26    
27    checkpoint56b_post
28    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
29      is called from DO_THE_MODEL_IO
30      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
31      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
32      - clean up PTRACERS_WRITE_TIMEAVE a little
33    o add another verification experiment that tests both the cfc-pkg and
34      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
35      reactive tendencies treated inline with regular timestepping
36    o testreport previously did a lousy job of comparing small numbers, so
37      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
38      implemented in the little c-progam tmp_cmpnum.c which is embedded in
39      testreport.
40    o ptracers_monitor: bug fix for MPI
41    
42    checkpoint56a_post
43    o GCHEM: finish reorganizating the package
44      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
45        (introduces another 3D-array for each passive tracer, but only if
46        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
47        gchemTendency is not needed because the timestep is done separately)
48      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
49      - GCHEM is now---more or less cleanly---separate from PTRACERS
50      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
51        so clear to me how that should be done in a general way.
52    o CFC: improve formatting of output in CFC_ATMOS
53    o PTRACERS:
54      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
55        that ALL experiments with ptracers enable can be checked. This makes
56        GCHEM_MONITOR obsolete.
57      - include a runtime parameter PTRACERS_monitorFreq that defaults to
58        monitorFreq
59      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
60    o add PTRACERS (PTR0[1-5]) to testreport output
61    o exf_check_range:
62      * default changed to .TRUE.
63      * will check values for niter0 if debLevA, every timestep if debLevB
64      * STOP in exf_check_range if 'out of range'
65      * range chosen generous to allow for potential extema
66      TBD: a version with stricter range
67           permitted range would be runtime parameters
68    o GMredi:
69      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
70      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
71      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
72    o GCHEM:
73      - move call to GCHEM_FORCING_SEP, so that it is now called before
74        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
75      - introduced a useGCHEM runtime flag and applied it everywhere.
76      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
77        this flag is now only visible within GCHEM-pkg routines.
78      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
79        be replaced by a 3D array that is computed before thermodynamics; for
80        this, the tracer ID iTracer had to be included into the parameter list
81        of ptracers_forcing
82      - set up forward_step to call gchem_forcing, that will replace
83        gchem_forcing_int in ptracers_forcing
84      - cleaning up
85    o small cleaning of exch2: remove files that are also in eesupp/src
86    
87    checkpoint56
88    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
89    o mnc: cleanup "full" files--fixes out-of-memory problem
90    o ECCO-GODAE
91      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
92      * fully merged and updated from SIO code
93        windstress sign change affects
94        - exf_inscal_[u/v]stress
95        - sign of xx_tau[u/v] adjustments
96        - signs in cost_scat
97      * ctrl_get_gen: avoid update of tau[u/v] for first few days
98      * natl_box_adjoint updated and compressed
99      * 2-level checkpoint switch added
100        (tested in EXP. 1 of natl_box_adjoint)
101      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
102    o SVD
103      * first complete, non-hacked version for SVD calculations
104      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
105        performed via direct access files admtlm_vector.it????
106        (via ctrl_[un]pack)
107      * optimcycle is used for ARPACK iteration counter
108        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
109      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
110        and add linear transforms where necessary
111      * controls are initial/final SST, SSS (can be extended; need to check
112        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
113    o mdsio: filename info to both stderr, stdout
114    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
115      from sign change
116    
117    checkpoint55j_post
118    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
119      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
120    o add consistent build directories and .cvsignore files to verification
121    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
122    o make all subroutines 30 or less characters in length for certain older
123      compilers to work (a thorough search only turns up two routines in
124      pkg/ptracers)
125    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
126      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
127    
128    checkpoint55i_post
129    o change arrays for total vertical diffusivity (2.D if explicit,
130      3.D if implicit) ; each ptracer uses its own background value.
131    o added mnc/NetCDF output capability to ocn_compon_interf
132      - added bits to verification/cpl_aim+ocn so that it can run on
133        ITRDA and other clusters without the mpirun "-wd" option
134    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
135      configuration
136    o give MNC the ability to create additional files rather than
137      exceeding a specified file size limit "MNC_MAX_FILESIZE"
138      - the default is just less than 2GB which is a practical limit
139        on many systems
140    o Compute the non-local term using either KPP vertical diffusivity (=default)
141       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
142    
143    checkpoint55h_post
144    o add verification test "vermix"
145    o remove all the *_ioinc flags and replace with the single global
146      outputTypesInclusive flag
147    o allow to set a vertical profile of vertical diffusivity for T & S
148    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
149    o useMNC moved from data.mnc to data.pkg
150    
151    checkpoint55g_post
152    o Renaming carbon AD experiments to comply with testreport conventions
153    o Updating adjoint of Held-Suarez hs94.1x64x5
154    o Fixing directives for non-ECCO forward_step, after ECCO directives
155      have been fixed to avoid recomp. of do_oceanic_phys
156      Works well for global_ocean.90x40x15,
157      but recomp. issue remains for carbon
158    o Updating adjoint output for natl_box_adjoint after
159      pkg/ecco has been modified (see taga c55d_post)
160    
161    checkpoint55f_post
162    o rename to timeave_init_fixed
163    
164    checkpoint55e_post
165    o some delicate re-shuffle of store directives to avoid one
166      extra call of do_oceanic_physics
167      affects ecco_the_main_loop.F, do_oceanic_physics.F
168      checkpoint_lev1_directives.h
169    o NB: this may break global_ocean adjoint temporarily,
170      but it is clear how to fix it. Will do later, need this now.
171    
172    checkpoint55d_post
173    o ECCO specific cost function terms (up-to-date with 1x1 runs)
174    o ecco_cost_weights is modified to 1x1 runs
175    o modifs to allow observations to be read in as
176      single file or yearly files
177    o enable to read exf forcing fields as either
178      single file or yearly files (flag useExfYearlyFields)
179    checkpoint55d_pre
180    
181    o switch between 2-level and 3-level checkpointing
182    o add ability of MNC to write local and "partial" (eg. 2D slices where
183      the full 3D field is never actually stored) arrays to NetCDF files
184      with the correct (that is, the complete multi-dimensional) set of
185      array indicies
186      - used in mom_vecinv() to write the diagFreq output
187      - tested (demonstrated) in verification/aim.5l_cs
188    o further mnc-ification
189      - add verification/lab_sea to the list with mnc setups
190      - fix undefined mnc v-names in cd_code
191      - add kpp to mnc output (both snapshot and timeave)
192    o non-hydrostatic code
193      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
194        in calc_gw.F
195      - defaults to viscAh
196      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
197        friction or Leith) in non-hydrostatic mode, as long as there is
198        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
199    o pkg/cost
200      extend simple cost functions to treat time mean quantities
201      (T,U,V) via cost_accumulate_state from cost_tile
202    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
203        be 2 times larger than the minimum size the advection scheme requires.
204        now get a perfect conservation of salt in advect_cs test-exp (updated)
205    o GGL90 (Gaspar's TKE mixed layer)
206      - add horizontal diffusion of TKE, requires exchanges in
207        do_fields_blocking_exchanges, horizontal diffusivity is zero by
208        default. In OPA there is no horizontal diffusion of TKE but the
209        mixing coefficients are computed from a horizontal average of TKE of
210        6 points or so. I think that diffusion has a little more physical
211        justification.
212      - clean up ggl90_calc in the hope of reducing memory usage (this hope
213        was in vain)
214      - mask tke-variable in ggl90_init
215    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
216    o fix biharmonic diffusion on CS-grid.
217    o more obcs stuff
218      - added obcs_external_fields_load as an alternative to the EXF-pkg option
219        for reading boundary values. This routine is called from
220        obcs_prescribe_read
221      - updated obcs_check
222      - changed sponge layer relaxation parameter units for days to seconds
223      - turned off sponge layer by default
224      - changed argument list of OBCS_CALC to myTime+deltaTclock
225      - fixed about 35 bugs in obcs_external_fields_load
226    
227    checkpoint55c_post
228    o obcs stuff
229      - new runtime flags useOBCSprescribe, useOBCSbalance
230      - re-arranged obcs_calc
231      - moved exf_getobcs to obcs_prescibe_read
232        obcs_prescibe_read is called after ORLANSKI stuff
233        and independent of it (executable can contain all).
234      - updated obcs_check
235      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
236        These may be necessary only if tangential velocities are
237        prescribed at OB, not sure, needs testing.
238    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
239      which simplifies the calls and passes the ifc check-bounds test
240    
241    checkpoint55b_post
242    o add a 2D scalar, Z location, exchange_2 routine.
243    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
244      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
245      affects advect_cs results (for the wrong reason): update output.txt
246    o use a more standard discretization for biharmonic viscosity ;
247     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
248      affects results of dome set-up: update output.txt
249    o fix gad_advection.F (CubedSphere part), back to version 1.23
250    o fix bug in mom_vi_del2uv.F (CubedSphere part).
251    
252    checkpoint55a_post
253    o merged code to
254      * prescribe/read time-dependent open boundaries
255        (works in conjunction with exf, cal)
256      * sponge layer code for open boundaries
257      * each boundary N/S/E/W now has its own CPP option
258        (healthy for the adjoint)
259    
260    checkpoint55
261    o up-to-date adjoint of previous breaks
262      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
263      - global_ocean_ebm: adjoint still needs fix (TLM ok)
264      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
265      - carbon: * remove tr1-related adjoint verification
266                * add ptracer as control variable
267    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
268      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
269    
270    checkpoint54f_post
271    o in verification/carbin/ remove experiment related to
272      ALLOW_PASSIVE_TRACER (array tr1 etc)
273      code_ad/ input_ad/ results_ad
274    
275    o add two new packages
276      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
277        + subject to optimization (memory)
278      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
279        + subject to reordering (many GOTOs in the original code)
280        + so far opps is called for every (i,j) point, and then operates in
281          the vertical; one may want to reorder the scheme in order operate in
282          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
283          fields)
284    o overhaul of IO so that we now have flags for MDSIO and/or MNC
285      - all verification tests compile and run with linux_ia32_g77
286      - defaults are compatible with current input files--nothing
287        should change if you were not previously using MNC
288      - MNC output has been added in numerous places (eg. timeave)
289        but there are still a few writes not yet do-able with MNC
290        (this is in progress)
291      - flags now allow for either/or/both use of MDSIO and MNC and
292        documentation will soon follow
293      - numerous small formatting cleanups for ProTeX
294    o add version info (via BUILD_INFO.h) to MNC and stdout
295    
296    checkpoint54e_post
297    o add two new packages
298      - pp81 (Packanowski and Philander, 1981), Richardson number and
299        stratification dependent mixing
300      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
301      - these scheme operate in a similar manner as KPP (without ghat, of
302        course), however there is only one diffusivity that is used for both
303        temperature and salinity (and passive tracers)ç
304    o add offline package
305    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
306      provided by Stephanie Dutkiewicz
307    o genmake2: add ability to search for C compilers and cleanup test output
308      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
309    
310    checkpoint54d_post
311    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
312    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
313      leading to additional shift by 5 days each year of integration
314       (i.e. leading to considerable offset over the years)
315    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
316    o start with no AB and no initial filtering (staggerTimeStep):
317      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
318    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
319      (external loading & cpl import/export stay in forward_step.F)
320    o update coupling interface to work with new staggerTimeStep
321    o change MDSIO ptracers_pickup.
322    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
323    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
324    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
325    
326    checkpoint54c_post
327    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
328      this affects (truncation error) output.txt of test-exp:
329       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
330    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
331    o change Qnet to always be the net heat flux, (+upward).
332      affects (truncation error) output of natl_box exp.: updated
333    o define the max number of passive tracers in PTRACERS_SIZE.h
334    o start to test mnc routinely in exp0
335    o add sea-ice loading (sIceLoad) as a new forcing field.
336    
337    checkpoint54b_post
338    o add testreport "-j JOBS" option for parallel builds (tested and pretty
339       impressive on Altix and Opteron systems)
340    o diagnostics can now write NetCDF files through the mnc package
341    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
342    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
343    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
344      affects (truncation error) output of lab_sea & natl_box exp.: updated
345    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
346    
347    checkpoint54a_post
348    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
349    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
350    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
351    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
352      + internal_wave (shift in writing cg2d_ini_res)
353    checkpoint54a_pre
354    
355    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
356      - modified verification/lab_sea and natl_box_adjoint accordingly
357    
358    checkpoint54
359    checkpoint53g_post
360    o prepare splitting of thermodynamics: store convect.counter in common block
361    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
362      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
363    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
364    o new parameter "nShapS": allow to treat differently S from T (nShapT)
365    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
366    o restore adjointability
367    
368    checkpoint53f_post
369    o modifications that affect AIM experiment results (update output.txt):
370      - no advection of S at top interface Nr (pkg/generic_advdiff)
371      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
372    o AIM pkg:
373      - include stability function into surf.Flux derivative relative to Tsurf
374      - calculate clear-sky radiation & surface temp. change (for diagnostics)
375    
376    checkpoint53e_post
377    o merged cylindrical coord configuration
378    o added rotating_tank experiment
379    checkpoint53e_pre
380    
381    checkpoint53d_post
382    o faulks upgraded: re-generate output.txt that have changed:
383       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
384    o Added Bryan and Lewis, 1979, vertical diffusivity profile
385    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
386    o added Sadourny discretization of Coriolis
387      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
388      - re-enabled use of omega3 (useAbsVorticity)
389    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
390      vector-invariant equations
391      - note: does *NOT* yet use same variable visc. for no-slip BC's.
392    o recoded the lateral boundary conditions for non-hydrostatic w, this time
393      hopefully without new bugs
394      - still to do: biharmonic friction for non-hydrostatic w
395    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
396    o regenerated output for global_ocean_ebm (using -ieee)
397    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
398      of mom_common/
399      - simple re-arrangement of instructions within computing loop
400    checkpoint53d_pre
401    
402    checkpoint53c_post
403    o new version of coupler for AIM+thSIce and Ocean models
404     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
405     - land: change Evaporation of snow
406     - aim with thSIce: fix bug in snow-precip.
407    o changes to calc_gw.F
408     - bug fix for w^2 term near the bottom boundary
409     - (hopefully) improve the lateral slip boundary condtions for use with
410        partial/looped cells
411      - because the bug fix changes two verification experiments anyway (exp5
412        and plume on slope), change the lateral boundary condition from half slip
413        to the value of no_slip_sides
414    o ebm package wasnt quite up to the parallel task. Fixed that.
415    o Adjoint of EBM package + verification
416      * TLM OK
417      * ADM not sufficient accuracy yet (needs further testing)
418    
419    checkpoint53b_post
420    o Commiting new energy balance model to repository
421      * package is pkg/ebm
422      * verif. is verification/global_ocean_ebm
423      * references are in ebm_driver.F
424    C      * X. Wang, P. Stone and J. Marotzke, 1999:
425    C        Global thermohaline circulation. Part I:
426    C        Sensitivity to atmospheric moisture transport.
427    C        J. Climate 12(1), 71-82
428    C      * X. Wang, P. Stone and J. Marotzke, 1999:
429    C        Global thermohaline circulation. Part II:
430    C        Sensitivity with interactive transport.
431    C        J. Climate 12(1), 83-91
432    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
433    C        Destabilization of the thermohaline circulation
434    C        by atmospheric eddy transports.
435    C        J. Climate 7(12), 1870-1882
436    o Will need long integration testing.
437    checkpoint53b_pre
438    
439    o created pkg/mom_common in preparation for variable viscosity code
440    o renamed and split ini_mnc_io
441    o pkg/land: only liquid water can diffuse or run-off
442    o AIM using land: soil wetness availability account for snow
443    o added printMapIncludesZeros to EEPARMS namelist
444    
445    checkpoint53a_post
446    o restore TAMC compatiility for exf_constants.h
447      (no usage of _d in .h)
448    o Additional storing in KPP in an attempt to fix
449      TAMC problem with adjoint of KPP code.
450      (no success...)
451      Identical code works fine with TAF.
452    o Fixed verification/natl_box_adjoint experiments.
453      Initial conditions for Experiments 4 and 5 are now
454      set to "SEAICE_initialHEFF=0", which is more reasonable,
455      and hence gives results closer to that of Experiment 2.
456      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
457    
458    checkpoint53
459    o stable checkpoint with up to date adjoint
460      TLM tests only run for 1st grdchk at the moment. Its unclear if
461      this is a code problem or a problem with resetting code for g_
462      variables that is being autogenerated wrong.
463      Otherwise:
464       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
465       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
466         are both still in chaos following their security messes.
467    
468    checkpoint52n_post
469    o various build (mostly genmake2) changes including:
470      - ability to build/run more easily within Cygwin and MacOS X
471      - more complicated Makefiles with a stronger dependence on Gnu Make
472    o pkg/seaice modifications
473      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
474        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
475        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
476      - changed proxy for geostrophic velocity and updated
477        verification/lab_sea/results/* accordingly
478      - removed ADI dynamic solver from pkg/seaice
479      - replaced all occurrences of 1/CSTICE or 1/CSUICE
480        they caused a segmentation fault under certain circumstances
481      - removed unused field WATR
482    o bug fix in exf-package:
483      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
484         now reflect that.
485    o small fixes in the cal-package:
486      - set reference date to first of January for the 'model'-calendar
487      - failing of cal_CheckDate in cal_FullDate now actually results in a
488        warning
489    o small modifications in exf-package to increase flexibility:
490      - change climtempfreeze from a constant to a runtime parameter that
491        is specified in data.exf_clim (default = -1.9)
492      - introduce runtime parameter windstressmax (default = 2.0) that is
493        specified in data.exf
494    o fix in pkg/thsice:
495      - update Evap (Tsf changes) to be consistent with Latent heat flux
496      - maintain snow precipitation unchanged (even if Tsf >=0).
497     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
498    
499    checkpoint52m_post
500    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
501      this does not change any of the results, because myIter=0 in swfrac always
502      lead to jwtype=2 (the default anyway), but the call makes little sense
503      as a default
504    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
505    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
506      atmospheric model (AIM) to use it ; add a "slab ocean" component.
507    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
508    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
509    o extending useSingleCpuIO option to work with new exch2 I/O format
510      - old-style, missing-tile I/O is still accessible by defining CPP
511        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
512    o monitor package can write to NetCDF files and/or STDOUT
513    o fix re-definition bug in MNC_GRID_INIT_ALL()
514    o doc/api_reference added
515      - a framework for building an API Reference Manual using all
516        the "protex" comments embedded in the code
517      - see pkg/generic_advdiff, pkg/mnc for examples
518    o MNC:
519      - make myThid the last argument for all subroutines
520      - new default for the grid files: NO halos
521      - add useMNC and other run-time flags
522      - separate per-file-group handling of the unlimited dimension
523      - early initialization of MNC w/ flags read at the eeboot stage
524        and lookup tables set in initialize_fixed
525      - write all MNC output to a freshly-created directory
526    o thermodynamics sea-ice (thsice) is now tested with testreport.
527    o test exp. advect_cs: use the standard cs32 grid ; update output.
528    o Added functionality to grdchk:
529      pick global i,j,k position (or nearest wet) where to perform check.
530    
531    checkpoint52l_post
532    o new land formulation:
533      a) use ground enthalpy as prognostic variable to ensure exact
534         energy conservation.
535      b) account for water temperature and for latent heat of freezing
536         in all processes (rain, run-off, ground storage)
537      c) compute surface and ground temperature implicitly.
538    o aim_v23 modification for new land model:
539      a) Treat separately land / ocean / sea-ice surface fluxes
540         to allow implicit computation of land & sea-ice surface temp.
541      b) add snow precipitation.
542    checkpoint52l_pre
543    
544    o fix problem (when 1 tile is empty) in min/max monitor.
545    o fix bug in timeAve (u,vZetatave in common block)
546    o no restoring terms under ice for pkg/seaice
547    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
548    o bug fix for pkg/seaice pickups
549    o change MNC call locations and add coordinate attributes
550    o mask vorticity at the corner ; affects global_ocean.cs output
551    o fix ini_curvilinear_grid ; test CS experiments with mpi
552    o aim.5l_cs: modify sea-ice fraction input file ; update output
553    o exf: Adding simple range check routine for exf fields after read
554    
555    checkpoint52k_post
556    o removed top-level directory "diags"
557      - we migrated these functions to pkg/timeave a long time ago
558    o fixed bug introduced in pkg/monitor
559    o accuracy ctrlprec = 32 insuffient for gradient checks using
560      averaged fields (I/O via cost_averages)
561      -> use ctrl.h in active_file*.F to control I/O precision.
562    o paramter list of CALL ADTHE_MAIN_LOOP
563    o added initial do_the_model_io to ecco
564    o set all ...Freq to zero after cost_final
565      taveFreq, dumpFreq, pChkptFreq
566    o MAIN and ECCO differentiability restored
567    
568    checkpoint52j_post
569    o fix nchklev in tamc.h for global_ocean...
570    o Bringing flow and store directives up-to-date
571    o Really weird thing!
572      call do_the_model_io from the_main_loop with parameters
573      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
574      TAF places a faulty re-call of initialise_varia
575      after cost_final call which should not be there!
576    checkpoint52j_pre
577    
578    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
579      error messages
580    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
581    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
582      debug output
583    o modfied mdsio_writefield.F to handle non-global files under exch2
584    o update AIM Cubed-Sphere exp (aim.5l_cs):
585      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
586    o update AIM Equatorial Channel exp:
587      use standard aim_v23 pkg and change the SST fields to be more realistic.
588    o globalFile now works with exch2
589    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
590      mon_vort3.F to make exch2 friendly with >1 tile per cube face
591    o limit timeave output for hi-res integrations
592    
593    checkpoint52i_post
594    o removed CPP_EEOPTIONS.h from verification/*/code
595    o updated the tiling for global_ocean_pressure
596    checkpoint52i_pre
597    
598    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
599      the old pkg/aim).
600    
601    checkpoint52h_pre
602    o shortened offending lines in exch2_send_rx?.template
603    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
604    o genmake2: add build & execute test for NetCDF code
605    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
606      old grid files, moved CPP_EEMACROS.h to pkg/exch2
607    o added useSingleCPUIO flag to monitor.F and mon_out.F
608    o added temporary hack for sea-ice dynamics on the cube:
609      metric terms are ignored and it is assumed that
610      there is no sea-ice on cube faces 1, 2, 4, and 5.
611    
612    checkpoint52f_post
613    o added exch2 cube routines to pkg/exch2
614    o modified hs94.cs-32x32x5 to use it
615    o added new grid files to hs94.cs-32x32x5
616    checkpoint52f_pre
617    
618    checkpoint52e_post
619    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
620      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
621    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
622      to work with implicit vertical advection and AB ;
623    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
624    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
625     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
626    checkpoint52e_pre
627    
628    o fix bug in impldiff when Nr=1 or Nr=2.
629    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
630    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
631    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
632      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
633    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
634    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
635    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
636    
637    checkpoint52d_post
638    o re-tiled many expts to allow comparison in multi-processor mode
639      - updated output accordingly
640      - changed hs94.128x64x5 to use intial T from file rather than use the
641        random number generator
642    o add infrastructure in model routines for fizhi and gridalt packages
643    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
644    o changes to permit hi-res, cubed-sphere, configuration
645      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
646      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
647      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
648        of surface winds for the cube
649      (A verification experiment, based on global_ocean.cs32x15, but with
650       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
651       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
652       complete with example surface forcing files and matlab scripts to look
653       at the output and compare it with that of global_ocean.cs32x15.)
654    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
655       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
656       to conform to the common rule.
657    o check-in the first version of the coupler + interfaces for multi-components
658       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
659       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
660       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
661       - ocean and atmos. share the same horizontal grid (no interpolation).
662       - exchanges between component and coupler is done in forward_step
663    o new verification experiment, cpl_aim+ocn:
664       coupled ocean - AIM atmosphere on cs32 grid.
665    
666    checkpoint52d_pre
667    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
668    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
669    
670    checkpoint52c_post
671    o Fixing OPTIONS files for use of exf:
672      - ALLOW_ECCO not needed
673      - ECCO_CPPOPTIONS.h should not be included from
674        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
675        as has been the case in the past
676      - All cal/exf related options are currently set in
677        single header file. Should remain so until we
678        agree on a consistent new policy.
679    o Removed all CPP options for cal package.
680      cal has no more CPP options.
681    o modified STOREs in GAD_ADVECTION
682    o corrected key comp. for passkey
683    
684    checkpoint52b_post
685    o new version: "thsice" of thermodynamic sea-ice pkg:
686     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
687     - modify fluxes but do not change theta directly;
688     - light cleaning of bulk_force pkg (still needed with thsice).
689     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
690       + output_thsice.txt to test thsice & bulk_force pkgs.
691    o put back grid & coriolis monitor output.
692    checkpoint52b_pre
693    
694    o call "do_the_model_io" at the beginning (=> dump initial state)
695    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
696    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
697      (need info on NUMBER_OF_PTRACERS)
698    o missing PTRACERS headers in some routines
699    o default tamc.h in pkg/autodiff supposed to crash
700      to ensure proper customization
701    
702    checkpoint52a_post
703    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
704      - moved surfaceTendencyTice from pkg/seaice to main code
705      - subroutine FREEZE_SURFACE now limits only surface temperature
706        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
707        => new output.txt for global_ocean.cs32x15 & global_with_exf
708      - keep the old version of FREEZE for backward compatibility;
709        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
710      - corresponding modifs for TAF directives
711    o added surface flux output variables to TIMEAVE_STATVARS
712    o time-averaged output for pkg/ptracers
713    o fix problem with ECCO-related divided adjoint
714      snapshot file was missing some ad-variables,
715      but no warning issued by TAF
716    
717    checkpoint52a_pre
718    o some bug fixes for #undef REAL4_IS_SLOW
719    
720    checkpoint52 = ecco_c52_e35
721    o after testing adjoints of checkpoint51u_post
722    
723    checkpoint51u_post
724    o this is the post-merge tag of the ecco-branch
725      (needs another clean checkout and re-testing)
726    o various natl_box_adjoint configs and results
727      but no input fields
728    o obcs adjoint not yet merged!
729    o adding ECCO global 1x1 and 2x2 degree configs
730    o updated/extended some store directives for seaice
731    o pkg/ecco now containes ecco-specific part of cost function
732    o top level routines the_main_loop, forward_step
733      supersede those in model/src/
734      previous input data.cost now in data.ecco
735      (new namelist ecco_cost_nml)
736    o in ctrl/ cleaned some cross-dependencies and updated CPP options
737    
738    checkpoint51t_post
739    o this is the pre-merge tag of the ecco-branch
740    
741    checkpoint51s_post
742    o cleanup: removed various obsolete #define-s
743    o pkg/grdchk
744      - renamed 'ph-grd 3' to 'grad-res'
745      - merged from ecco-branch
746        (remaining bug fixes for obcs gradient checks)
747      - additional high-precision output for testreport
748        (grep for 'precision_grdchk_result')
749    
750    checkpoint51r_post
751    o cleaned up or removed CPP_OPTIONS.h files
752    o updated results for some of the tests to reflect the new
753      optfiles (-ieee: -O0 instead of -O3)
754    
755    checkpoint51q_post
756    o cd_code:
757      - moved cd_scheme.F -> cd_code_scheme.F
758      - separate read_checkpoint from cd_code_ini_vars.F
759      - separated cd_code part from write_checkpoint
760      - updated AD_SOURCE, generated .flow
761      - added CD_CODE_VARS.h to the_main_loop
762      - Moving cd_code specific store dir.s to pkg/cd_code
763    o ctrl package totally restructured
764      - pack/unpack now optional and decoupled from
765        xx_/adxx_ I/O
766      - ctrl_pack/unpack cleaned
767        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
768      - confined inclusion of AD_CONFIG.h to where necessary.
769    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
770    
771    checkpoint51p_post
772    o create initial cd_code package
773      - WARNING: the initialization of fields within packages
774        is broken because INI_FIELDS (where READ_CHECKPOINT is
775        called) is called *before* PACKAGES_INIT_VARIABLES.
776        This seems to be backwards since
777        1) its important to initially zero the entire field including
778           the "halo" region
779        2) zeroing needs to be done *before* reading pickup info
780           and the pickup call might or might not happen in any
781           particular run
782      - this needs an overhaul for R2
783    o cleanup verification/*/code/GMREDI_OPTIONS.h
784    o cleanup testreport
785    
786    checkpoint51o_post
787    o bringing AD-related verif's up to date with genmake2
788      - carbon/
789      - global_ocean.90x40x15/
790      - hs.94.1x64x5/
791      - (front_relax/ )
792    o (more) consistent directory structure for AD-related verif.'s
793    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
794    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
795    o bug fix in find_alpha.F for MDJWF:
796      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
797        change rho -> rho-rhoConst
798      - replace call find_rho to find_rhonum
799    o initialisation of rFlx extended to full array (required by TAF)
800      and shifted to thermodynamics
801    o removed PTRACERS.h in ptracers routine
802    o added surfacetendencyPtr to S/R parameter list pracers_forcing
803    o Correcting initialisations for fVerU, fVerV.
804    o helping TAF to recognize dependency on kUp for
805      fVerU, fVerV
806    o Replacing delZ by delR in pkg/ctrl/
807    checkpoint51o_pre
808    
809    o undid all of cp51 pending some cleanups and discussion
810    o added the [#include "AD_CONFIG.h"] statement to all files that need
811       it for adjoint/tl #defines
812     o re-worked the build logic in genmake2 to support AD_CONFIG.h
813     o removed tools/genmake since it no longer works
814    
815    checkpoint51n_post
816    o modifications to make FREEZE flux visible to pkg/kpp
817      - moved surfaceTendencyTice from pkg/seaice to main code
818      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
819      - subroutine FREEZE now limits only surface temperature
820        (this means new output.txt for global_ocean.90x40x15,
821         global_ocean.cs32x15, and global_with_exf)
822    o added surface flux output variables to TIMEAVE_STATVARS
823    
824    checkpoint51n_pre
825    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
826    o added [#include "AD_CONFIG.h"] to all files that use the following
827      defines:
828      - ALLOW_ADJOINT_RUN
829      - ALLOW_TANGENTLINEAR_RUN
830      - ALLOW_ECCO_OPTIMIZATION
831    
832    checkpoint51m_post
833    o incorporating changes to get TAMC/TAF working in genmake2
834      - added new TAMC/TAF targets to the Makefile
835      - various cleanups related to package handling
836      - these changes should have no impact on the forward model
837    
838    checkpoint51l_post
839    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
840     - faster algorithm for cal_addtime.F
841     - higher precision arithmetic, where needed
842     - pkg/exf *startdate variables changed from calendar date to
843       model integration time
844    
845    checkpoint51l_pre
846    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
847    o enable to apply restoring on S & T only in a latitude band.
848    o update output (external_forcing_surf modif. change truncation errors)
849       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
850    
851    checkpoint51k_post
852    o change default to: useNHMTerms=.FALSE.
853     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
854       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
855     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
856        exp1, ideal_2D_oce
857     - change data file of oceanic exp (leave the results unchanged for now)
858       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
859    o set gravitySign automatically according to the vertical coordinate used
860      (and change sign: back to "logical" value: +1 when R increases downward)
861    o added an include barrier to the default CPP_OPTIONS.h and
862      removed the #include "PACKAGES_CONFIG.h" from it
863    o fix a bug in mom_fluxform (from chk51j_post)
864    
865    checkpoint51j_post
866    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
867    o adjusted some flow directives (dynamics, thermodynamics)
868    o added cubed-sphere case to test cost function
869    o heckpoint_lev?_directives.h now include
870      pkg-specific directives, whenever those are enabled.
871    o Moving pkg-specific flow directives to corresponding pkg
872      Moving pkg-specific differentiation list to corresponding pkg
873      Moving pkg-specific checkpoint-lev storing to corresponding pkg
874      ---> conventions are
875           - pkg_ad.flow
876           - pkg_ad_diff.list
877           - pkg_ad_check_lev?_dir.h
878    
879    checkpoint51i_post
880    o merge of the branch-genmake2
881      - knowingly breaks the older genmake
882      - automatic generation of all ALLOW_${PKG_NAME} defines
883      - new testreport supersedes older testscript
884    o large number of package inclusion and header cleanups
885    checkpoint51i_pre
886    
887    o new output for adjoin of global ocean vector invariant
888    o fix for checkpoint of thermodynamic seaice and bulk_force
889    o Steph gchem various cleanups
890    
891    checkpoint 51h_pre
892    o fixed some single quotes
893    o modify gchem pkg to be more versatile
894    o modifications to clean up dic pkg
895    o add pkg/cfc
896    
897    checkpoint51g_post
898    o provide links for ARPACK and ADM*TLM
899    o start removing verification/vero/
900    o update AD-related stuff
901      (in particular some IF-statements in model/src/ routines)
902    o adding to verification/global_ocean.90x40x15/ adjoint of
903      vector invariant setup
904    
905    checkpoint51f_post
906    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
907    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
908      of tracer Green's fucntions for ocean inversion project.
909    
910    checkpoint51f_pre
911    o Added on-the-fly spatial interpolation capability
912        "USE_EXF_INTERPOLATION" to pkg/exf.
913      - This is a temporary Cartesian-grid hack until
914        the super-duper ESMF coupler becomes available.
915      - See verification/global_with_exf/README for usage example.
916      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
917        flags and modified pkg/seaice accordingly.
918    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
919        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
920        non-local transport term.
921    
922    checkpoint51e_post
923    o pkg/mom_vecinv:
924      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
925      - add time-ave diagnostic of vorticity advection.
926    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
927    o atmospheric geopotential: - include water vapor effect;
928                                - use p^kappa in p* scaling.
929    o land pkg: read initial state from files.
930    o AIM : add stratospheric drag in the upper level
931    
932    checkpoint51d_post
933    o change function ILNBLNK (=> last non-blank char.) to return zero
934      (instead of the string length) when the string. char is empty
935    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
936    o modif's to restore TAMC compatibility
937      - avoid "_d" constructs in PARAMETER declarations
938      - avoid interrupting lines by comment lines
939    o Use cluster local disks for purely local I/O
940      vs. globally visible disks needed for ctrl stuff
941      (merged from ecco-branch)
942      - new active_file_loc... and mdsio_..._loc routines
943      - affected packages: autodiff, ctrl, grdchk, mdsio
944    
945    checkpoint51c_post
946    o introducing integer flag debugLevel
947      - debLevZero: suppress all output
948      - debLevA: standard
949      - debLevB: equivalent to current debugMode=.TRUE.
950    o introducing pathname variable mdsioLocalDir for mdsio
951      that can be specified at runtime
952      (relevant for cluster I/O to local disk)
953    `
954    >>>checkpoint51b_post
955    adjoint of ptracers
956    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
957    o extended state in checkpoint_lev?, etc.
958    o alternative ctrl/cost with tr1 or ptracer
959    o new comlev1_bibj_ptracers
960    o new ptracers.flow
961    o made ptracers_forcing same as external_forcing_s
962    o added verification for adjoint with ptracers
963      - adm. grdchk fail so far
964      - tlm. grdchk OK
965      - checked tapelev/comlev recomputations: OK
966    <<<checkpoint51b_pre
967    
968    checkpoint51a_post
969    o added code for biogeochemistry package
970      - new pkgs: dic, gchem
971      - new subroutine in ptracers
972    o modify code for biogeo packages
973      - in model/src and pkg/ptracers
974    
975    checkpoint51
976    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
977      - autodiff, ctrl, exf, grdchk, seaice
978      kept separate packages
979      - cost, ecco, obcs
980    o updating verification/internal_wave, verification/lab_sea
981      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
982    
983    checkpoint50i_post
984    o Preparing next differentiable checkpoint and sync
985      of MAIN vs. ecco-branch
986      - 1st step: this one is differentiable
987      - 2nd step: next(! not this) checkpoint will have updated packages
988                  from ecco-branch)
989    
990    checkpoint50h_post
991    o new package "land": provide surface BC for AIM.
992    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
993    o AIM: use true log-P extrapolation for near surface temp (= as in
994        F.Molteni paper) ; update aim.5l_cs output.
995    o New variable in PARM03 for more flexible pickups
996    o somewhat cleaned package initialisation sequence for
997      ctrl/ cost/ ecco/ in packages_... routines
998    
999    checkpoint50g_post
1000    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1001      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1002      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1003        made the default because of faster convergence than ADI
1004    
1005    checkpoint50f_post
1006    o exf totally restructured
1007      - replaced all exf_set_ routines by one generic exf_set_gen.F
1008        and made sure it's still differentiable
1009      - split exf_getffields.F into new exf_bulkformulae.F
1010      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1011      - updated adjoint/makefile and relevant verif. accordingly
1012    
1013    checkpoint50f_pre
1014     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1015          + change Evap over land. (update aim.5l_cs output)
1016     o added missing .cvsignores and made uniform across expts
1017     o changed configuration of tidal_basin_2d expt
1018     o added pkg/debug functions for tracing code in fatal crashes
1019     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1020     o new fn in pkg/monitor to stop model if solution grows too big
1021     o removed lots of single quotes from comments
1022    
1023    checkpoint50e_post
1024    o make KPP work with PTRACERS
1025     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1026       nearly a copy of kpp_transport_s
1027     - there is no analogue to SurfaceTendencyS, so I have to use
1028       gPtr(of the surface layer) instead
1029    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1030    checkpoint50e_pre
1031    
1032    checkpoint50d_post
1033    o change kpp output from multiple-record state files to single-record state
1034      files analogous to write_state.F
1035    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1036      analogous to the cg2d-related output.
1037    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1038      so that writing to internal file fn (with length 512) fails.
1039    checkpoint50d_pre
1040    
1041    checkpoint50c_post
1042    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1043    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1044    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1045    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1046    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1047    
1048    checkpoint50c_pre
1049    Merging from release1_p13:
1050    o bug fix for pkg/seaice dynamic solver
1051    o Added SEAICE_initialHEFF to pkg/seaice
1052    
1053    checkpoint50b_post
1054    o store u*,v* in gU,V instead of in guNm1,gvNm1
1055    o in order to put the momForcing out of the Adams-Bashforth:
1056      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1057      to timestep.F
1058    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1059    o re-generate output for highly sensitive test-exp:
1060       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1061    
1062    checkpoint50b_pre
1063    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1064    o corrected CPP option mismatch in exf_Bulk... functions for case
1065      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1066    
1067    checkpoint50a_post
1068    o Bug fix for merging between c50 and KPP.
1069      ikey was passed from thermodynamics to kpp_calc via
1070      common block rather than being recomputed in kpp_calc,
1071      in contradiction with new key itdkey.
1072      New key ikppkey created, and tamc.h headers updated.
1073    
1074    checkpoint50
1075    - 2nd step of merge with ecco-branch:
1076      merge changes in ecco-branch back into main trunk
1077    - bug fix in find_alpha
1078    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1079    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1080    - merged some sliced AD support routines
1081    
1082    checkpoint49
1083    merged from ecco-branch:
1084    o exf:
1085      - Enable initialisation of forcing fields to constant
1086        (runtime) values.
1087      - in exf_getffields.F
1088        Reduce i-/j-loop to interior domain, discarding overlaps.
1089        That also fixes wrong TAF-key computations for key_1, key_2
1090        with bulf formulae.
1091      - exf_init.F modify #ifdef for exf_init_evap
1092      - exf_getffieldrec.F, ctrl_getrec.F
1093        The following INT-usages are not safe:
1094          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1095          fldcount = int(fldsecs/fldperiod) + 1
1096        and were modified.
1097    o autodiff: checkpoint_lev...
1098      - updated storing for bulk formulae (some arrays were missing)
1099      - added state for seaice package
1100      - synchronized with main branch
1101    o DIVA:
1102      Modif.s in
1103      - the_main_loop.F
1104      - the_model_main.F
1105      and added cost_final_restore.F cost_final_store.F
1106      o With these changes, it is possible to fully separate
1107        the first forward run to compute the cost function (mdthe_main_loop)
1108        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1109        into separate model executions.
1110        This enables better tuning of DIVA to given queue sizes.
1111      o Loss of cost function value in consecutive DIVA runs is
1112        fixed by storing to 'costfinal' file.
1113      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1114        beginning/end of adjoint integration is accounted for.
1115      The current changes apply to TAF-1.4.26.
1116      TAF has one remaining bug, requiring one manual change
1117      (see MITgcm manual).
1118    o cal: synchronized between MAIN and ecco-branch
1119    
1120    checkpoint48i_post
1121    o Changes to restore differentiability of code w.r.t. previous tag
1122      (mostly adding new routines to make list and replacing
1123      pressure by totPhiHyd).
1124    o Updated and merged grdchk package
1125      - has both ADM and TLM checks
1126      - works for single- and multi-proc.
1127      - output cleaned
1128      - worked successfully for parallel DIVA
1129    o genmake:
1130      - Adding -platform=SP4
1131      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1132    o Modif. for DIVA:
1133      ctrl_unpack should not be called in intermediate DIVA interval.
1134      (similar thing would apply for active files such as
1135      tbar, sbar, psbar, which should not be reinitialised;
1136      only relevant for ecco-branch)
1137    
1138    checkpoint48h_post
1139    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1140    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1141    o Added SEAICE_initialHEFF to pkg/seaice
1142    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1143    
1144    checkpoint48g_post
1145    --- EOS:
1146    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1147      store total Potential in totPhyHyd for diagnostics & EOS.
1148    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1149    --- Pressure/geopotential gradient:
1150    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1151    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1152      ( changes results of global_ocean_pressure )
1153    o NLFS + z-coord.: add eta*Rho' contribution.
1154    o accurate phiHyd when using interface-W at the middle between 2 centers
1155     ( changes results of ideal_2D_oce )
1156    o includes r* 2nd term in potential gradient.
1157    
1158    checkpoint48f_post
1159    Merging from release1_p12:
1160    o Modifications for using pkg/exf with pkg/seaice
1161      - improved description of the various forcing configurations
1162      - added basic radiation bulk formulae to pkg/exf
1163      - units/sign fix for evap computation in exf_getffields.F
1164      - updated verification/global_with_exf/results/output.txt
1165    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1166      (SBO) core products, including oceanic mass, center-of-mass,
1167      angular, and bottom pressure (see pkg/sbo/README.sbo).
1168    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1169      to avoid negative values in shallow regions.
1170      - updated verification/natl_box/results/output.txt
1171      - updated verification/lab_sea/results/output.txt
1172    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1173    o Added useSingleCpuIO option (see PARAMS.h).
1174    o Updated useSingleCpuIO option in mdsio_writefield.F to
1175      work with multi-field files, e.g., for single-file pickup.
1176    o pkg/seaice:
1177      - bug fix in growth.F: QNET for no shortwave case
1178      - added HeffFile for specifying initial sea-ice thickness
1179      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1180    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1181      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1182    o pkg/seaice:
1183      - adjoint-friendly modifications
1184      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1185    
1186    checkpoint48e_post
1187    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1188    o dynamics: change definition of computational domain & adapt mom_fluxform
1189      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1190    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1191        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1192        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1193        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1194        inverted_barometer solid-body.cs-32x32x1
1195      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1196    
1197    checkpoint48d_post
1198    o in preparation for r*:
1199     a) use pre-computed gradient of hydrostatic potential:
1200        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1201     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1202        => affects results of glob_oce_pressure (different truncation error)  
1203      update output.txt of ideal_2D_oce & global_ocean_pressure
1204    
1205    checkpoint48d_pre
1206    o in preparation for r*:
1207      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1208      pass the 2 comp. of the grad. as arguments to momentum S/R.
1209      but for the moment, only used if it does not change the results.
1210    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1211    
1212    checkpoint48c_post
1213    Modifications in treatment of initial flux forcing controls
1214    to avoid extra storing of flux fields.
1215    
1216    checkpoint48c_pre
1217    o Added tidal_basin_2d experiment (currently 1D!)
1218    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1219    
1220    checkpoint48b_post
1221    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1222     (modification to pressure gradient not yet implemented)
1223    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1224      (for U & V) that are used for vertical advection of momentum.
1225    
1226    checkpoint48a_post
1227    o In preparation for r*, use temp. array to compute vertical transport
1228       in flux-form momentum pkg. => change results of few test-exp.
1229      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1230                        lab_sea, natl_box & plume_on_slope
1231    
1232    checkpoint48
1233    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1234    
1235    checkpoint47j_post
1236    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1237    o moved adexch from forward_step to addummy_in_stepping
1238    o added exch in ctrl_map_...
1239    o aveFreq.=0. at end of cost_final to avoid overwrite in
1240      reverse checkpointing loop
1241    o Yet more changes in gmredi:
1242      * adgmredi_calc_tensor
1243        avoiding all recomputation of gmredi_slope_limit
1244      * adgmredi_x/y/rtransport
1245        added flag for excessive storing to avoid recomp. of
1246        u/v/rtans, dTdx/y/z
1247        -> this is not really necessary and very memory-consuming
1248      * adgmredi_slope_psi:
1249        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1250      * gmredi_slope_limit
1251        re-activated full calculation of taperfct for case 'ac02'
1252    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1253    
1254    checkpoint47i_post
1255    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1256    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1257      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1258    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1259    o gmredi: fix few bugs.
1260    
1261    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1262    This will be a good checkpoint to plug into the ecco-branch.
1263    o few modif.'s to get latest version adjointed
1264      (mainly kick out code in ini_linear_phisurf)
1265    o modif's to run adjoint with exactConserv
1266    o case GM_BOLUS_ADVEC should be cleaned
1267      S/R gmredi_slope_psi should be cleaned
1268    o verification/carbon now has exactConserv=.TRUE.
1269    
1270    checkpoint47g_post
1271    o time-average AIM output: becomes independent from statvars time-average
1272      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1273    o After TAF bug fix:
1274      Tested adjoint of gmredi package.
1275      Tests were done with checkpoint47 rather than with latest
1276      checkpoint47f_post since the latter is broken for the adjoint
1277      verification/carbon/ contains both ADM and TLM gradient checks.
1278    Here they are, before they get changed/lost/stolen.
1279    Mostly modif.'s to fix numerical sensitivities.
1280    Gradient checks OK for
1281    - GM_taper_scheme:
1282      * clipping
1283      * ac02
1284      * linear
1285      * glw91
1286      * dm95
1287      * ldd97
1288    - GMREDI_OPTIONS:
1289      * GM_VISBECK_VARIABLE_K
1290      * GM_NON_UNITY_DIAGONAL
1291      * GM_EXTRA_DIAGONAL
1292      * GM_BOLUS_ADVEC
1293    in conjunction with data.gmredi parameters to be checked in
1294    in a few minutes under verification/carbon/code/
1295    
1296  checkpoint47f_post  checkpoint47f_post
1297  Merging from release1_p10:  Merging from release1_p10:
1298  o modifications for using pkg/exf with pkg/seaice  o modifications for using pkg/exf with pkg/seaice

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