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revision 1.29 by adcroft, Thu Jul 13 14:22:58 2000 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
1297    Merging from release1_p10:
1298    o modifications for using pkg/exf with pkg/seaice
1299      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1300        and SEAICE_EXTERNAL_FLUXES
1301      - pkg/exf CPP options EXF_READ_EVAP and
1302        EXF_NO_BULK_COMPUTATIONS
1303      - usage examples are Experiments 8 and 9 in
1304        verification/lab_sea/README
1305      - verification/lab_sea default experiment now uses
1306        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1307    
1308    checkpoint47e_post
1309    o created a tag prior to creating a branch
1310    
1311    checkpoint47d_post
1312    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1313      at the bottom boundary had an erroneous half slip boundary condition
1314    o added bottom drag and no slip boundary condition capabilities to
1315      oceanic pressure coordinates code
1316    o added new verification experiment global_ocean_pressure, this experiment is
1317      also described in the tutorial section of the manual
1318    checkpoint47d_pre
1319    
1320    checkpoint47c_post
1321    o Added a verification experiment for a global cubed-sphere ocean run
1322      -  verification/global_ocean.cubed32x32x30
1323      -  uses pkg/therm_seaice and pkg/bulk_forcing
1324    
1325    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1326    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1327      when using P-coordinate; only implemented for atmospheric config.
1328    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1329      NOTES: requires option NONLIN_FRSURF to be "#define".
1330    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1331    
1332    checkpoint47b_post
1333    Merging from release1_p9:
1334    o pkg/seaice
1335      - removed GOTO's and added taf directives
1336      - double precision constants to reduce the g77 (Linux)
1337        to F77 (SGI) differences reported in release1_p8
1338    o tools/genmake
1339      - added SGI options
1340    o verification/testscript
1341      - updated to that of checkpoint47a_post
1342    o verification/global_ocean.90x40x15/input/eedata
1343      - modified for SGI f77 compatibility
1344    o verification/lab_sea
1345      - added description of sea-ice model
1346      - added missing matlab routines
1347      - added test of thermodynamics parallelization
1348    
1349    checkpoint47a_post
1350    o new pkg: aim_v23
1351     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1352       for now, keep the same surface forcing as before.
1353     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1354     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1355     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1356    o add diagnostic of surface correction term in monitor output
1357    
1358    o bulk_force and therm_seaice
1359    - Two packages:  bulk_force (Bulk forcing)
1360      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1361    - Earlier integration from Stephaine Dutkiewicz
1362      and Patrick Heimbach.
1363    - Two ifdef statements for compile time,
1364       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1365    
1366    checkpoint47
1367    differentiable version of checkpoint46n_post
1368    o bug fix in quasihydrostaticterms
1369    o * "clean" adjoint code (in terms of extensive recomputations)
1370        can now be obtained for all GMREDI options (i.e. for
1371        - GM_VISBECK_VARIABLE_K
1372        - GM_NON_UNITY_DIAGONAL
1373        - GM_EXTRA_DIAGONAL
1374        - GM_BOLUS_ADVEC )
1375      * However, wrong gradient check problem remains unsolved.
1376      * New CPP options have been introduced for different
1377        tapering schemes
1378    o external_fields_load now part of differentiation list
1379    o pressure needs multiple storing;
1380      would be nice to have store_pressure at beginning or
1381      end of forward_step, e.g. by having phiHyd global (5-dim.)
1382      (NB: pressure is needed for certain cases in find_rho,
1383      which is also invoked through convective_adjustment).
1384    o recomputations in find_rho for cases
1385     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1386    o #define ATMOSPHERIC_LOADING should be differentiable
1387    o ini_forcing shifted to begining of initialise_varia
1388    o Incorporating QNVS line search routines into MITgcm
1389      (this is separate code, and therefore not under pkg)
1390      lsopt/, optim/
1391    o Updated verification/carbon/
1392      - #define GM_VISBECK_VARIABLE_K
1393      - GM_taper_scheme    = 'ldd97'    
1394    
1395    checkpoint46n_post
1396    Merging from release1_p8:
1397    o verification/natl_box:
1398      updating new external_fields_load routine
1399    o New package: pkg/seaice
1400      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1401      The sea-ice code is based on Hibler (1979-1980).
1402      Two sea-ice dynamic solvers, ADI and LSR, are included.
1403      In addition to computing prognostic sea-ice variables and diagnosing
1404      the forcing/external data fields that drive the ocean model,
1405      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1406      The implied surface heat flux is then stored in variable
1407      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1408      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1409      non-local transport term.  Because this call precedes model
1410      thermodynamics, temperature under sea-ice may not be "exactly" at
1411      the freezing point by the time theta is dumped or time-averaged.
1412      N.B.: fairly large differences in accuracy occur across
1413            different platforms/compilers; comparison between
1414            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1415            generated output gives:
1416       T           S           U           V
1417      C D M    c        m  s        m  s        m  s        m  s
1418      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1419      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1420      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1421    
1422      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1423    o GAD:
1424      - generated new common blocks to account for call of
1425        same gad routines with differing traceridentities
1426        (needed to modify tracerIdentity indices in GAD.h)
1427      - generated separate common blocks for case useCubedSphereExchange
1428        (Department of Futurology)
1429      - parameter lists to gmredi_?transport: added tracerIdentity
1430      - added new key indices to tamc.h
1431    o external_fields_load:
1432      - added this routine to TAF list
1433      - needed to make some common blocks global and additional storing
1434        along the same lines as exf package (checkpoint_lev?_directives.h)
1435    o exf:
1436      updated external forcing package
1437      - bug fixes carried over from ecco-branch
1438        (missing OBCS_OPTIONS.h in two routines)
1439      - enable easy to use "no forcing".
1440      - added exf I/O for atmospheric loading
1441      - added exf I/O for runoff data
1442      - transfered scaling between exf <-> MITgcm to exf namelist
1443    o Adding new verification experiment global_with_exf.
1444      This verification experiment is almost identical to the
1445      global_ocean.90x40x15 experiment, except that it uses
1446      the exf (and cal) package instead of the
1447      external_fields_load routine (cf README file).
1448    
1449    checkpoint46m_post
1450    o modified testscript to return -- when there are no lines of "%MON" output
1451    o added new flag "quasiHydrostatic" for QH mode
1452      and new routine quasihydrostaticterms()
1453    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1454      New routine: mom_u_coriolis_nh()
1455    o fixed sign of non-hydrostatic metric terms in u and v equations.
1456      Depend on correct sign of gravitySign.
1457    o added work.pc* to .cvsignore in aim directories using ifc
1458    o introduced flag for controllin non-hydrostatic metric terms
1459    o removed gravitySign from PARM04
1460    o switched to g77/ifc from pgf77 in aim experiments
1461    
1462    checkpoint46l_post
1463    o made convective adjustment work with pressure coordinates:
1464     - changed the direction of k-loop in convective_adjustment.F for the
1465       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1466     - adjusted the reference pressure k-index in convective_adjustment.F
1467     - adjusted the convection condition in convect.F (in analogy to
1468       calc_ivdc.F)
1469     - convective_adjustment no longer computes anything on the halos
1470     - removed the warnings about negative salinity from find_rho.F and
1471       find_alpha.F; instead the new routine look_for_neg_salinity, called
1472       at the beginning of find_rho, find_alpha, and find_beta, does a
1473       check of the entire slice, if CPP-option
1474       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1475    checkpoint46l_pre
1476    
1477    checkpoint46k_post
1478    o fixed the verification/global_ocean.90x40x15 experiment:
1479     - new bathymetry (the world according to A., JMC, and M.)
1480     - new initial fields and forcing fields (*.bin files)
1481     - new POLY3.COEFFS (for the next release one should switch to a full
1482       equation of state: JMD95P or MDJWF)
1483     - fixed several errors and redundancies in the data file
1484     - experiment uses looped cells
1485     - added matlab directory with diagnostic scripts for plotting of output
1486    
1487    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1488     - read AIM physics parameters from a file (data.aimphys)
1489     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1490    
1491    checkpoint46j_post
1492    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1493    o move wVel computation at the end of the time step, in S/R integr_continuity
1494    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1495    o update timeave pkg for wVel diagnostic.
1496    checkpoint46j_pre
1497    
1498    checkpoint46i_post
1499    o Clean up AIM package (and keep the results unchanged):
1500      include CPP_OPTION and use IMPLICT NONE in all routines ;
1501      declare all the variables _RL ; use _d 0 for all numerical constants.
1502      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1503    
1504    checkpoint46h_post
1505    o cleaned up the use of rhoNil and rhoConst.
1506      - rhoNil should only appear in the LINEAR equation of state, everywhere
1507        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1508        and the dynamical equations are all divided by rhoConst
1509    o introduced new parameter rhoConstFresh, a reference density of fresh
1510      water, to remove the fresh water flux's dependence on rhoNil. The default
1511      value is 999.8 kg/m^3
1512    o cleanup up external_forcing.F and external_forcing_surf.F
1513      - can now be used by both OCEANIC and OCEANICP
1514    checkpoint46h_pre
1515    
1516     Added code to convert surface volume flux (fresh water) into
1517     a mass flux when using P coordinates in the ocean (OCEANICP).
1518     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1519    
1520    checkpoint46g_post
1521    o Include a new diagnostic variable phiHydLow for the ocean model
1522      - in z-coordinates, it is the bottom pressure anomaly
1523      - in p-coordinates, it is the sea surface elevation
1524      - in both cases, these variable have global drift, reflecting the mass
1525        drift in z-coordinates and the volume drift in p-coordinates
1526      - included time averaging for phiHydLow, be aware of the drift!
1527    o depth-dependent computation of Bo_surf for pressure coordinates
1528      in the ocean (buoyancyRelation='OCEANICP')
1529      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1530        Theta, Salinity, and Pressure in the parameter list. This routine is
1531        presently contained in find_rho.F. This routine does not give the
1532        correct density for 'POLY3', which would be a z-dependent reference
1533        density.
1534    o cleaned up find_rho
1535      - removed obsolete 'eqn' from the parameter list.
1536    o added two new verification experiments: gop and goz
1537      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1538    checkpoint46g_pre
1539    
1540    checkpoint46f_post
1541    o Enable tangent linear (forward mode) gradient checks:
1542      - extended active file handling to g_... files
1543      - added TANGENT_SIMULATION to theSimulationMode
1544      - extended grdchk package accordingly
1545    o added tangent linear setup in verification/carbon/code_ftl
1546    o added adjoint setup in verification/front_relax/code_ad
1547    
1548    checkpoint46e_post
1549    o Added new equation of state -> MDJWF
1550      - EOS of McDougall et al., 2002, JAOT, submitted
1551      - caveat: the equation of state is only valid for a smaller (more
1552        realistic?) range of values than JMD95P/Z and UNESCO
1553      - added masks to the calculation of pressure in store_pressure
1554      - added more check values for density in check_eos (ini_eos.F), some of
1555        the old check values are out of the range of the MDJWF-eos, so don't
1556        expect perfect matches for those
1557    checkpoint46e_pre
1558    
1559    checkpoint46d_post
1560    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1561      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1562      case of pressure coordinates. eosType='JMD95Z' in
1563      combination with buoyancyRelation='OCEANICP' now causes an error.
1564    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1565      in find_alpha/beta.
1566    checkpoint46d_pre
1567    
1568    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1569      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1570    
1571    checkpoint46c_post
1572    o Changes necessary for ocean in p-coordinates
1573     -  Added new buoyancy relation = 'OCEANICP'
1574     -  Added new parameters = gravitySign (this used to be contained inside
1575        the factor dRdZ which I added when we first switched to R coordinates).
1576     X GM/Redi is not compatible (yet)
1577     X bottom drag and no-slip need to be debugged.
1578    checkpoint46c_pre
1579    
1580    checkpoint46b_post
1581    o Added new equation of state -> JMD95Z and JMD95P
1582      - EOS of Jackett and McDougall, 1995, JAOT
1583      - moved all EOS parameters into EOS.h
1584      - new routines ini_eos.F, store_pressure.F
1585    o Added UNESCO EOS, but not recommended because it requires
1586      in-situ temperature (see JMD95)
1587    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1588      unesco.f to be used with POLY3
1589    checkpoint46b_pre
1590    
1591    checkpoint46a_post
1592    o Added (atmospheric) pressure loading
1593      - new field in FFIELDS.h, etc...
1594      - new cpp flag ATMOSPHERIC_LOADING
1595    o Changed hFacC to _hFacC in calc_phi_hyd.F
1596    o Added SHORTWAVE_HEATING to some files for consistency
1597    checkpoint46a_pre
1598    
1599    checkpoint46
1600    further merges from release1_p5
1601    o new ctrl package
1602      - adopted from ECCO environment to enable optimization
1603      - added Eliassen Palm fluxes to controls
1604    o added Eliassen Palm flux controls to gradient check package
1605    o cost package
1606      - Compatible with new ctrl package
1607      - added Eliassen Palm cost hooks
1608      - modif's of existing cost functions
1609    o Adjoint-related bug fixes in kpp:
1610      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1611      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1612    o autodiff package
1613      - flow directives:
1614        + new for S/R do_the_model_io
1615        + enhanced for S/R checkpoint
1616        + new gmredi.flow
1617      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1618        disable adcommon.h/g_common.h by default.
1619      - fixed problem for adjoint of global_max
1620    o modified verification/carbon/
1621    o New setup for adjoint of global_ocean
1622    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1623    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1624    o incorporated hooks for sponge layer code (external_forcing.F)
1625    
1626    checkpoint45d_post
1627    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1628    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1629      (affects plume_on_slope "cg2d" output)
1630    o add new parameter deltaTfreesurf for free-surface time stepping
1631    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1632    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1633    o change phiMin in exp1 (to agree with documentation)
1634    o add new flags:
1635     - T,S forcing inside/outside Adams-Bashforth
1636     - turn off temp,salt advection and/or forcing
1637     - for each tracer, define internal flag for multiDimAdvection & A-B
1638    o monitor: change definition of KE to check conservation of Energy
1639    
1640    checkpoint45c_post
1641    o Removed f90 comments ("!")
1642    o Modified initialisations to enable exf package for MITgcm
1643      (without invoking ECCO_PACKAGE).
1644    o modifications to gradient check package (Martin Losch)
1645      - enable centered differences
1646      - modified format of standard output
1647    
1648    checkpoint45b_post
1649    o cleaned exchange calls in cg2d
1650    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1651    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1652      to configure barotropic setup (Martin Losch)
1653    o moved some initialisations within bi,bj loop in dynamics
1654      (TAF flow dependency)
1655    o in initialise_varia, moved call packages_init_variables
1656      before convective_adjustment_init
1657      (corresponding adjustment of TAF tape initialisation).
1658    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1659    
1660    checkpoint45a_post
1661    o compute Rho over the whole domain (extend iMin,jMin indices)
1662    o specific exchange for X-slice domain (case Ny=1)
1663    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1664    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1665    
1666    checkpoint44h_post = checkpoint45
1667    o Fix to restore differentiability:
1668      place at which packages_init_variables is called in
1669      initialise_varia is crucial for reverse control flow.
1670    o modifications in GMRedi to enable stable adjoint
1671      (corresponding modif's in thermodynamics, dynamics)
1672    o added missing hook for sponge layer code in external_forcing
1673    o modified test cost functions
1674    o storing in gad_advection (plus removal of write(0,*)!
1675    o missing headers TR1.h added in convective_adjustment routines
1676    o errorMessageUnit set non-equal zero in eeboot
1677      (conflict on some platforms, e.g. IBM SP3)
1678    o modified carbon verif.
1679    
1680    checkpoint44h_pre
1681    o vertical grid option: allow to put the Interface at the middle between
1682      2 cell-centers ; replace delZ in pkg/kpp by drF.
1683    o GM Advective form: Tracers are advected using the residual transport (=
1684      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1685    
1686    checkpoint44g_post
1687    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1688      results) ; ifdef missing in thermodynamics.F
1689    
1690    checkpoint44f_pre,checkpoint44f_post
1691    o added PTRACERS package
1692      This allows an arbitrary number of passive tracers to be integrated
1693      forward simultaneously with the dynamicaly model.
1694      + Implemented so far:
1695        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1696        - I/O and checkpointing
1697        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1698      + Not implemented so far:
1699        - KPP
1700        - OBCS
1701      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1702        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1703        line in data.pkg.
1704      + This package is disabled by default since it increases storage.
1705    
1706    
1707    o testscript: added -cleanup option
1708    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1709                 b) enable to filter 2D fields.
1710    
1711    checkpoint44e_pre,post
1712    o re-wrote convective adjustment to use pre-calculated weights
1713      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1714      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1715      Original calls to convect() still in place.
1716    
1717    chkpt44d_pre,post
1718    o added missing EXCLUDE_MONITOR flags
1719    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1720      (incompatible typ in MIN/MAX expressions caused problems
1721      on IBM SP3)
1722    o in genmake added variable MAKEDEPEND
1723      plus resetting for case SunOS
1724    o added timer_stats.c routine for IBM SP3
1725    o removed variables in dynamics
1726    !!! I forgot to create tag chkpt44d_pre !!!
1727    !!! But chkpt44d_pre = chkpt44c_post    !!!
1728    
1729    o real fresh water flux implemented with non-linear free-surface.
1730    
1731    chkpt44c_pre,post
1732    o few fix (mask in shap_s2, EmPmR in external_field_load,
1733      USE_NATURAL_BCS in solve_for_P);
1734    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1735    
1736    checkpoint44b_pre/_post
1737    o merge of relevant stuff from the ecco-branch:
1738      - genmake: removed $S64 overwrite for case SunOS
1739      - pkg/exf: update and corrections for field swapping and obcs
1740      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1741                  harmonized between ECCO and MITgcm
1742      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1743                      updated checkpointing_lev... lists for obcs
1744      - model/src: minor changes in forward_step, plot_field
1745                   added directive for divided adjoint in the_main_loop
1746      - pkg/mdsio: added mdsio_gl_slice
1747    
1748    o check parameters & config (chkpt44a_pre,post)
1749    o OBC and NonLin_FrSurf.
1750    
1751    checkpoint44
1752    o fix bug in mom_vi_del2uv
1753    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1754    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1755    o update AIM experiments (NCEP input files)
1756    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1757    o added some stuff for AD
1758    
1759    checkpoint43
1760    o added two new advection tests
1761    o added global 4x4 degree ocean test
1762    o added test of H&S94 with free surface on cube
1763    o some final mods for gradient check, adjoint,...
1764    
1765    checkpoint42
1766      Fixed AD-related problems:
1767    o Store directives up-to-date with re-arranged Adams-Bashforth
1768      (mainly thermodynamics.F)
1769    o New store directives for multi-dim. advection schemes
1770      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1771      * new common block and key passkey
1772      (mainly gad_advection.F)
1773    o Modified store directives for split of dynamics/thermodynamics
1774      for the case ALLOW_KPP
1775    o Cleaned argument list for timestep_tracer.F
1776    
1777    checkpoint41
1778    o re-formatted/added comments in prologues of key subroutines
1779      to work with protex
1780    
1781    checkpoint40
1782    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1783    o added FLT (floats) package from Arne along with demo. experiment
1784    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1785      implementation of forward-in-time forcing terms
1786    o more mods for non-linear free-surface including new variable
1787    o modified multi-dim method to work on cube
1788    o bug fix in KPP (from DM)
1789    
1790    checkpoint40pre9
1791    o added DST advection schemes
1792    o fix MPI bug on SGI's
1793    o modifications for non-linear free-surface
1794    o fixed conditionals for fixed flow/passive tracer only mode
1795    o added tension/strain form of stress tensor
1796    o changes to commenting of arguments for TAF/TAMC
1797    o added/updated many matlab scripts
1798    o added multi-dimensional advection method for tracers
1799      
1800    checkpoint40pre8
1801    o new package rw/
1802      Added method for dumping intermediate local arrays:
1803      mdsio_writetile - same as mdsio_writefield except works from inside
1804                        bi,bj loop
1805      mdsio_writelocal - same as mdsio_writetile except works for local
1806                         arrays
1807      write_local_r? - higher-level wrapper for mdsio_writelocal
1808      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1809      Example given at end of mom_vecinv.F that dumps some local arrays.
1810    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1811      control flux-form versus vector invariant code.
1812      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1813      or genmake -DISABLE ...
1814    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1815      (additional storing is now needed for case vecinv;
1816      currently nothing implemented to switch this storing off
1817      in case fluxform is used since no CPP flag available).
1818    
1819    checkpoint40pre7
1820    o bug fix in dynamics.F
1821      calc_viscosity called before k=1,Nr loop.
1822    o added some #ifdef's ALLOW_PASSIVE_TRACER
1823    o cleaned initialisations in ctrl_map_ini
1824      related to TAF
1825    
1826    checkpoint40pre6
1827    o split dynamics into thermodynamics & dynamics
1828    o corresponding split of calc_diffusivity into
1829      calc_diffusivity, calc_viscosity
1830      (kpp_calc_diff, kpp_calc_visc).
1831    o Added diffkr, kapgm to control variables
1832    o bug fix in gmredi_slope_limit for ldd97
1833    
1834    checkpoint40pre5
1835    o proper initialization of Adams-Bashforth time stepping
1836      + uses forward step for very first step of model (iter=0)
1837    o re-generated *all* output since almost all output is modified by this
1838      change (sorry but we've been putting this one off for about 2 years)
1839      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1840        *not* regenerated since they are already out of date and I don't
1841        want to create the impression that they are suddenly working.
1842    o removed KAP stuff for DEC's
1843    o modified/added many .cvsignore files in */code and */input
1844    o added new expt "solid-body.cs-32x32x1"
1845      + this uses an alternative form of ini_curvilinear_grid.F which
1846        is not necessarily any better than the current one...
1847    
1848    checkpoint40pre4
1849    o added re-initialisations of utrans,vtrans,rtrans in
1850      calc_common_factors which are crucial for TAF.
1851    o extended iMin,jMin range for calc_common_factors,
1852      calc_diffusivity
1853    o added option ALLOW_PASSIVE_TRACER
1854    o a few minor updates and fixes
1855    
1856    checkpoint40pre3
1857    o created calc_gtr1.F for gad package
1858    o split the_main_loop and re-introduced forward_step
1859    o some recomputations of nIter0 for TAMC
1860    
1861    checkpoint40pre2
1862    o Updated to latest branch of AJA, JMC
1863    o Added gradient check package
1864    o Added routines for passive tracer handling
1865    o Added carbon sequestration sensitivity experiment
1866    
1867    checkpoint39
1868     o Modifications and fixes to support TAMC
1869       (mainly missing or wrong directives)
1870     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1871       in addummy_in_stepping
1872     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1873     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1874     o Included following packages:
1875       cal: calendar
1876       exf: external forcing
1877       ecco: essential routines to control use of cal, exf
1878             (NB: this is not the full ECCO environment)
1879     o disabled some packages by default in genmake
1880    
1881    checkpoint38
1882     o see notes_c37_adj.txt
1883     o corrected wrong layer index in external_forcing_t
1884     o replaced the_main_loop/forward_step by the_main_loop
1885     o removed forceoutput from write_state
1886       (replaced criteria for initial/final state)
1887     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1888    
1889    checkpoint37
1890     o mdsio.F routine split and packaged in pkg/mdsio
1891       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1892        used unless genmake -disable=mdsio)
1893     o allow a more precise surface-geopotential gradient for the atmosphere
1894       taking into account the change in space of Alpha (=1/rho) at the surface.
1895     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1896       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1897     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1898       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1899       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1900     o Time-Average diagnostics defined as a pseudo package "timeave".
1901     o pickup files : old pickup (before c35) did not work with new code (c35
1902       and after) unless activating 2 commented lines in initialise-varia.
1903     o Non-Hydrostatic pickup file Pb fixed.
1904     o bug with Rigid-lid version (since c35) fixed.  
1905    
1906    checkpoint36
1907     o implement Crank-Nickelson barotropic time-stepping
1908     o recover Time-Average diagnostics
1909     o fix Pb in checkpoint (PR#19)
1910     o AIM become a standard package ; clean unused CPP_kees
1911    
1912    checkpoint35
1913     o subtantial rewrite of dynamics.f
1914     o allows staggered time-stepping
1915     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1916     o added bottom drag (linear + quadratic)
1917    
1918    checkpoint34
1919     o Modified exchange routines for correct reverse simulation.
1920     o Added verification output to comply with bug fix in impldiff.F
1921       as of c33 (exp2, natl_box).
1922     o Corrected store directives in dynamics.F
1923     o Corrected array boundaries in impldiff.F
1924     o Corrected array dimensions in gmredi.
1925       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1926     o Added routine GLOBAL_SUM_INT to global_sum.F
1927     o Added mdsio_gl.F for ECCO purposes.
1928    
1929    checkpoint33
1930     o Fixed bug in lower BC in impldiff.F
1931     o Fixed confusion about units of forcing arrays in FFIELDS.h
1932       namely Fu,Fv,Qnet,Qsw,EmPmR:
1933       - Removed verification/natl_box/code/external_fields_scale.F
1934         (did not differ from that in model/src)
1935       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1936         (see FFIELDS.h for description)
1937       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1938         kpp_calc.F and kpp_transport_t.F
1939       - Removed model/src/external_fields_scale.F and calls to it
1940       - verification/natl_box uses flux data with "atmospheric" sign so
1941         a special version of external_fields_load.F is used to
1942         change the data as it's read in. This way, the arrays
1943         have the right units and signs at all times tha a user could
1944         possibly use them.
1945     o Corrected genmake to delete a temporary file during configuration
1946    
1947    checkpoint32
1948     o Scaling of forcing fields moved from external_forcing.F to
1949       external_fields_scale.F, called directly after loading fields.
1950     o Surface relaxation terms added to surface tendency fields in
1951       extra subroutine.
1952     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1953       fields.
1954     o Changes in GMRedi to comply with packaging structure.
1955     o Modifications and bug fixes in KPP package.
1956     o Verification experiment for KPP added (verification/nat_box/)
1957    
1958    checkpoint31
1959     o Packages interface brought in line with defined standard
1960       -> new routines packages_...F
1961       -> changes in initialise_fixed.F, initialise_varia.F
1962       -> enables initialisation interface for ECCO package
1963     o Rescaling of external forcing fields immediately after read
1964       (removed from external_forcing.F)
1965       -> new: surface_fields_scale.F
1966       -> affects ini_foorcing.F, external_fields_load.F
1967     o Computation of surface tendencies before tendency updates.
1968       -> new: external_forcing_surf.F
1969     o Change of variable names useGMRedi, useKPP, useECCO
1970     o Further changes in dynamics.F, impldiff.F for TAMC
1971     o Tested for experiments 0, 2, 4.
1972       - not yet tested for GMRedi.
1973       - not yet tested for KPP.
1974    
1975  checkpoint30  checkpoint30
1976   o Updates for OBCs   o Updates for OBCs
1977   o New experiment for test OBCs (internal_wave)   o New experiment for test OBCs (internal_wave)

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