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revision 1.4 by cnh, Mon Jun 8 22:38:51 1998 UTC revision 1.396 by mlosch, Mon Nov 29 22:50:47 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 add another verification experiment that tests both the cfc-pkg and
7      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
8      reactive tendencies treated inline with regular timestepping
9    o testreport previously did a lousy job of comparing small numbers, so
10      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
11      implemented in the little c-progam tmp_cmpnum.c which is embedded in
12      testreport.
13    o ptracers_monitor: bug fix for MPI
14    
15    checkpoint56a_post
16    o GCHEM: finish reorganizating the package
17      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
18        (introduces another 3D-array for each passive tracer, but only if
19        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
20        gchemTendency is not needed because the timestep is done separately)
21      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
22      - GCHEM is now---more or less cleanly---separate from PTRACERS
23      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
24        so clear to me how that should be done in a general way.
25    o CFC: improve formatting of output in CFC_ATMOS
26    o PTRACERS:
27      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
28        that ALL experiments with ptracers enable can be checked. This makes
29        GCHEM_MONITOR obsolete.
30      - include a runtime parameter PTRACERS_monitorFreq that defaults to
31        monitorFreq
32      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
33    o add PTRACERS (PTR0[1-5]) to testreport output
34    o exf_check_range:
35      * default changed to .TRUE.
36      * will check values for niter0 if debLevA, every timestep if debLevB
37      * STOP in exf_check_range if 'out of range'
38      * range chosen generous to allow for potential extema
39      TBD: a version with stricter range
40           permitted range would be runtime parameters
41    o GMredi:
42      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
43      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
44      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
45    o GCHEM:
46      - move call to GCHEM_FORCING_SEP, so that it is now called before
47        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
48      - introduced a useGCHEM runtime flag and applied it everywhere.
49      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
50        this flag is now only visible within GCHEM-pkg routines.
51      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
52        be replaced by a 3D array that is computed before thermodynamics; for
53        this, the tracer ID iTracer had to be included into the parameter list
54        of ptracers_forcing
55      - set up forward_step to call gchem_forcing, that will replace
56        gchem_forcing_int in ptracers_forcing
57      - cleaning up
58    o small cleaning of exch2: remove files that are also in eesupp/src
59    
60    checkpoint56
61    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
62    o mnc: cleanup "full" files--fixes out-of-memory problem
63    o ECCO-GODAE
64      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
65      * fully merged and updated from SIO code
66        windstress sign change affects
67        - exf_inscal_[u/v]stress
68        - sign of xx_tau[u/v] adjustments
69        - signs in cost_scat
70      * ctrl_get_gen: avoid update of tau[u/v] for first few days
71      * natl_box_adjoint updated and compressed
72      * 2-level checkpoint switch added
73        (tested in EXP. 1 of natl_box_adjoint)
74      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
75    o SVD
76      * first complete, non-hacked version for SVD calculations
77      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
78        performed via direct access files admtlm_vector.it????
79        (via ctrl_[un]pack)
80      * optimcycle is used for ARPACK iteration counter
81        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
82      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
83        and add linear transforms where necessary
84      * controls are initial/final SST, SSS (can be extended; need to check
85        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
86    o mdsio: filename info to both stderr, stdout
87    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
88      from sign change
89    
90    checkpoint55j_post
91    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
92      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
93    o add consistent build directories and .cvsignore files to verification
94    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
95    o make all subroutines 30 or less characters in length for certain older
96      compilers to work (a thorough search only turns up two routines in
97      pkg/ptracers)
98    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
99      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
100    
101    checkpoint55i_post
102    o change arrays for total vertical diffusivity (2.D if explicit,
103      3.D if implicit) ; each ptracer uses its own background value.
104    o added mnc/NetCDF output capability to ocn_compon_interf
105      - added bits to verification/cpl_aim+ocn so that it can run on
106        ITRDA and other clusters without the mpirun "-wd" option
107    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
108      configuration
109    o give MNC the ability to create additional files rather than
110      exceeding a specified file size limit "MNC_MAX_FILESIZE"
111      - the default is just less than 2GB which is a practical limit
112        on many systems
113    o Compute the non-local term using either KPP vertical diffusivity (=default)
114       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
115    
116    checkpoint55h_post
117    o add verification test "vermix"
118    o remove all the *_ioinc flags and replace with the single global
119      outputTypesInclusive flag
120    o allow to set a vertical profile of vertical diffusivity for T & S
121    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
122    o useMNC moved from data.mnc to data.pkg
123    
124    checkpoint55g_post
125    o Renaming carbon AD experiments to comply with testreport conventions
126    o Updating adjoint of Held-Suarez hs94.1x64x5
127    o Fixing directives for non-ECCO forward_step, after ECCO directives
128      have been fixed to avoid recomp. of do_oceanic_phys
129      Works well for global_ocean.90x40x15,
130      but recomp. issue remains for carbon
131    o Updating adjoint output for natl_box_adjoint after
132      pkg/ecco has been modified (see taga c55d_post)
133    
134    checkpoint55f_post
135    o rename to timeave_init_fixed
136    
137    checkpoint55e_post
138    o some delicate re-shuffle of store directives to avoid one
139      extra call of do_oceanic_physics
140      affects ecco_the_main_loop.F, do_oceanic_physics.F
141      checkpoint_lev1_directives.h
142    o NB: this may break global_ocean adjoint temporarily,
143      but it is clear how to fix it. Will do later, need this now.
144    
145    checkpoint55d_post
146    o ECCO specific cost function terms (up-to-date with 1x1 runs)
147    o ecco_cost_weights is modified to 1x1 runs
148    o modifs to allow observations to be read in as
149      single file or yearly files
150    o enable to read exf forcing fields as either
151      single file or yearly files (flag useExfYearlyFields)
152    checkpoint55d_pre
153    
154    o switch between 2-level and 3-level checkpointing
155    o add ability of MNC to write local and "partial" (eg. 2D slices where
156      the full 3D field is never actually stored) arrays to NetCDF files
157      with the correct (that is, the complete multi-dimensional) set of
158      array indicies
159      - used in mom_vecinv() to write the diagFreq output
160      - tested (demonstrated) in verification/aim.5l_cs
161    o further mnc-ification
162      - add verification/lab_sea to the list with mnc setups
163      - fix undefined mnc v-names in cd_code
164      - add kpp to mnc output (both snapshot and timeave)
165    o non-hydrostatic code
166      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
167        in calc_gw.F
168      - defaults to viscAh
169      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
170        friction or Leith) in non-hydrostatic mode, as long as there is
171        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
172    o pkg/cost
173      extend simple cost functions to treat time mean quantities
174      (T,U,V) via cost_accumulate_state from cost_tile
175    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
176        be 2 times larger than the minimum size the advection scheme requires.
177        now get a perfect conservation of salt in advect_cs test-exp (updated)
178    o GGL90 (Gaspar's TKE mixed layer)
179      - add horizontal diffusion of TKE, requires exchanges in
180        do_fields_blocking_exchanges, horizontal diffusivity is zero by
181        default. In OPA there is no horizontal diffusion of TKE but the
182        mixing coefficients are computed from a horizontal average of TKE of
183        6 points or so. I think that diffusion has a little more physical
184        justification.
185      - clean up ggl90_calc in the hope of reducing memory usage (this hope
186        was in vain)
187      - mask tke-variable in ggl90_init
188    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
189    o fix biharmonic diffusion on CS-grid.
190    o more obcs stuff
191      - added obcs_external_fields_load as an alternative to the EXF-pkg option
192        for reading boundary values. This routine is called from
193        obcs_prescribe_read
194      - updated obcs_check
195      - changed sponge layer relaxation parameter units for days to seconds
196      - turned off sponge layer by default
197      - changed argument list of OBCS_CALC to myTime+deltaTclock
198      - fixed about 35 bugs in obcs_external_fields_load
199    
200    checkpoint55c_post
201    o obcs stuff
202      - new runtime flags useOBCSprescribe, useOBCSbalance
203      - re-arranged obcs_calc
204      - moved exf_getobcs to obcs_prescibe_read
205        obcs_prescibe_read is called after ORLANSKI stuff
206        and independent of it (executable can contain all).
207      - updated obcs_check
208      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
209        These may be necessary only if tangential velocities are
210        prescribed at OB, not sure, needs testing.
211    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
212      which simplifies the calls and passes the ifc check-bounds test
213    
214    checkpoint55b_post
215    o add a 2D scalar, Z location, exchange_2 routine.
216    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
217      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
218      affects advect_cs results (for the wrong reason): update output.txt
219    o use a more standard discretization for biharmonic viscosity ;
220     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
221      affects results of dome set-up: update output.txt
222    o fix gad_advection.F (CubedSphere part), back to version 1.23
223    o fix bug in mom_vi_del2uv.F (CubedSphere part).
224    
225    checkpoint55a_post
226    o merged code to
227      * prescribe/read time-dependent open boundaries
228        (works in conjunction with exf, cal)
229      * sponge layer code for open boundaries
230      * each boundary N/S/E/W now has its own CPP option
231        (healthy for the adjoint)
232    
233    checkpoint55
234    o up-to-date adjoint of previous breaks
235      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
236      - global_ocean_ebm: adjoint still needs fix (TLM ok)
237      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
238      - carbon: * remove tr1-related adjoint verification
239                * add ptracer as control variable
240    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
241      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
242    
243    checkpoint54f_post
244    o in verification/carbin/ remove experiment related to
245      ALLOW_PASSIVE_TRACER (array tr1 etc)
246      code_ad/ input_ad/ results_ad
247    
248    o add two new packages
249      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
250        + subject to optimization (memory)
251      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
252        + subject to reordering (many GOTOs in the original code)
253        + so far opps is called for every (i,j) point, and then operates in
254          the vertical; one may want to reorder the scheme in order operate in
255          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
256          fields)
257    o overhaul of IO so that we now have flags for MDSIO and/or MNC
258      - all verification tests compile and run with linux_ia32_g77
259      - defaults are compatible with current input files--nothing
260        should change if you were not previously using MNC
261      - MNC output has been added in numerous places (eg. timeave)
262        but there are still a few writes not yet do-able with MNC
263        (this is in progress)
264      - flags now allow for either/or/both use of MDSIO and MNC and
265        documentation will soon follow
266      - numerous small formatting cleanups for ProTeX
267    o add version info (via BUILD_INFO.h) to MNC and stdout
268    
269    checkpoint54e_post
270    o add two new packages
271      - pp81 (Packanowski and Philander, 1981), Richardson number and
272        stratification dependent mixing
273      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
274      - these scheme operate in a similar manner as KPP (without ghat, of
275        course), however there is only one diffusivity that is used for both
276        temperature and salinity (and passive tracers)ç
277    o add offline package
278    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
279      provided by Stephanie Dutkiewicz
280    o genmake2: add ability to search for C compilers and cleanup test output
281      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
282    
283    checkpoint54d_post
284    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
285    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
286      leading to additional shift by 5 days each year of integration
287       (i.e. leading to considerable offset over the years)
288    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
289    o start with no AB and no initial filtering (staggerTimeStep):
290      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
291    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
292      (external loading & cpl import/export stay in forward_step.F)
293    o update coupling interface to work with new staggerTimeStep
294    o change MDSIO ptracers_pickup.
295    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
296    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
297    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
298    
299    checkpoint54c_post
300    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
301      this affects (truncation error) output.txt of test-exp:
302       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
303    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
304    o change Qnet to always be the net heat flux, (+upward).
305      affects (truncation error) output of natl_box exp.: updated
306    o define the max number of passive tracers in PTRACERS_SIZE.h
307    o start to test mnc routinely in exp0
308    o add sea-ice loading (sIceLoad) as a new forcing field.
309    
310    checkpoint54b_post
311    o add testreport "-j JOBS" option for parallel builds (tested and pretty
312       impressive on Altix and Opteron systems)
313    o diagnostics can now write NetCDF files through the mnc package
314    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
315    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
316    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
317      affects (truncation error) output of lab_sea & natl_box exp.: updated
318    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
319    
320    checkpoint54a_post
321    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
322    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
323    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
324    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
325      + internal_wave (shift in writing cg2d_ini_res)
326    checkpoint54a_pre
327    
328    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
329      - modified verification/lab_sea and natl_box_adjoint accordingly
330    
331    checkpoint54
332    checkpoint53g_post
333    o prepare splitting of thermodynamics: store convect.counter in common block
334    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
335      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
336    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
337    o new parameter "nShapS": allow to treat differently S from T (nShapT)
338    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
339    o restore adjointability
340    
341    checkpoint53f_post
342    o modifications that affect AIM experiment results (update output.txt):
343      - no advection of S at top interface Nr (pkg/generic_advdiff)
344      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
345    o AIM pkg:
346      - include stability function into surf.Flux derivative relative to Tsurf
347      - calculate clear-sky radiation & surface temp. change (for diagnostics)
348    
349    checkpoint53e_post
350    o merged cylindrical coord configuration
351    o added rotating_tank experiment
352    checkpoint53e_pre
353    
354    checkpoint53d_post
355    o faulks upgraded: re-generate output.txt that have changed:
356       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
357    o Added Bryan and Lewis, 1979, vertical diffusivity profile
358    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
359    o added Sadourny discretization of Coriolis
360      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
361      - re-enabled use of omega3 (useAbsVorticity)
362    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
363      vector-invariant equations
364      - note: does *NOT* yet use same variable visc. for no-slip BC's.
365    o recoded the lateral boundary conditions for non-hydrostatic w, this time
366      hopefully without new bugs
367      - still to do: biharmonic friction for non-hydrostatic w
368    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
369    o regenerated output for global_ocean_ebm (using -ieee)
370    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
371      of mom_common/
372      - simple re-arrangement of instructions within computing loop
373    checkpoint53d_pre
374    
375    checkpoint53c_post
376    o new version of coupler for AIM+thSIce and Ocean models
377     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
378     - land: change Evaporation of snow
379     - aim with thSIce: fix bug in snow-precip.
380    o changes to calc_gw.F
381     - bug fix for w^2 term near the bottom boundary
382     - (hopefully) improve the lateral slip boundary condtions for use with
383        partial/looped cells
384      - because the bug fix changes two verification experiments anyway (exp5
385        and plume on slope), change the lateral boundary condition from half slip
386        to the value of no_slip_sides
387    o ebm package wasnt quite up to the parallel task. Fixed that.
388    o Adjoint of EBM package + verification
389      * TLM OK
390      * ADM not sufficient accuracy yet (needs further testing)
391    
392    checkpoint53b_post
393    o Commiting new energy balance model to repository
394      * package is pkg/ebm
395      * verif. is verification/global_ocean_ebm
396      * references are in ebm_driver.F
397    C      * X. Wang, P. Stone and J. Marotzke, 1999:
398    C        Global thermohaline circulation. Part I:
399    C        Sensitivity to atmospheric moisture transport.
400    C        J. Climate 12(1), 71-82
401    C      * X. Wang, P. Stone and J. Marotzke, 1999:
402    C        Global thermohaline circulation. Part II:
403    C        Sensitivity with interactive transport.
404    C        J. Climate 12(1), 83-91
405    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
406    C        Destabilization of the thermohaline circulation
407    C        by atmospheric eddy transports.
408    C        J. Climate 7(12), 1870-1882
409    o Will need long integration testing.
410    checkpoint53b_pre
411    
412    o created pkg/mom_common in preparation for variable viscosity code
413    o renamed and split ini_mnc_io
414    o pkg/land: only liquid water can diffuse or run-off
415    o AIM using land: soil wetness availability account for snow
416    o added printMapIncludesZeros to EEPARMS namelist
417    
418    checkpoint53a_post
419    o restore TAMC compatiility for exf_constants.h
420      (no usage of _d in .h)
421    o Additional storing in KPP in an attempt to fix
422      TAMC problem with adjoint of KPP code.
423      (no success...)
424      Identical code works fine with TAF.
425    o Fixed verification/natl_box_adjoint experiments.
426      Initial conditions for Experiments 4 and 5 are now
427      set to "SEAICE_initialHEFF=0", which is more reasonable,
428      and hence gives results closer to that of Experiment 2.
429      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
430    
431    checkpoint53
432    o stable checkpoint with up to date adjoint
433      TLM tests only run for 1st grdchk at the moment. Its unclear if
434      this is a code problem or a problem with resetting code for g_
435      variables that is being autogenerated wrong.
436      Otherwise:
437       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
438       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
439         are both still in chaos following their security messes.
440    
441    checkpoint52n_post
442    o various build (mostly genmake2) changes including:
443      - ability to build/run more easily within Cygwin and MacOS X
444      - more complicated Makefiles with a stronger dependence on Gnu Make
445    o pkg/seaice modifications
446      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
447        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
448        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
449      - changed proxy for geostrophic velocity and updated
450        verification/lab_sea/results/* accordingly
451      - removed ADI dynamic solver from pkg/seaice
452      - replaced all occurrences of 1/CSTICE or 1/CSUICE
453        they caused a segmentation fault under certain circumstances
454      - removed unused field WATR
455    o bug fix in exf-package:
456      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
457         now reflect that.
458    o small fixes in the cal-package:
459      - set reference date to first of January for the 'model'-calendar
460      - failing of cal_CheckDate in cal_FullDate now actually results in a
461        warning
462    o small modifications in exf-package to increase flexibility:
463      - change climtempfreeze from a constant to a runtime parameter that
464        is specified in data.exf_clim (default = -1.9)
465      - introduce runtime parameter windstressmax (default = 2.0) that is
466        specified in data.exf
467    o fix in pkg/thsice:
468      - update Evap (Tsf changes) to be consistent with Latent heat flux
469      - maintain snow precipitation unchanged (even if Tsf >=0).
470     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
471    
472    checkpoint52m_post
473    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
474      this does not change any of the results, because myIter=0 in swfrac always
475      lead to jwtype=2 (the default anyway), but the call makes little sense
476      as a default
477    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
478    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
479      atmospheric model (AIM) to use it ; add a "slab ocean" component.
480    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
481    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
482    o extending useSingleCpuIO option to work with new exch2 I/O format
483      - old-style, missing-tile I/O is still accessible by defining CPP
484        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
485    o monitor package can write to NetCDF files and/or STDOUT
486    o fix re-definition bug in MNC_GRID_INIT_ALL()
487    o doc/api_reference added
488      - a framework for building an API Reference Manual using all
489        the "protex" comments embedded in the code
490      - see pkg/generic_advdiff, pkg/mnc for examples
491    o MNC:
492      - make myThid the last argument for all subroutines
493      - new default for the grid files: NO halos
494      - add useMNC and other run-time flags
495      - separate per-file-group handling of the unlimited dimension
496      - early initialization of MNC w/ flags read at the eeboot stage
497        and lookup tables set in initialize_fixed
498      - write all MNC output to a freshly-created directory
499    o thermodynamics sea-ice (thsice) is now tested with testreport.
500    o test exp. advect_cs: use the standard cs32 grid ; update output.
501    o Added functionality to grdchk:
502      pick global i,j,k position (or nearest wet) where to perform check.
503    
504    checkpoint52l_post
505    o new land formulation:
506      a) use ground enthalpy as prognostic variable to ensure exact
507         energy conservation.
508      b) account for water temperature and for latent heat of freezing
509         in all processes (rain, run-off, ground storage)
510      c) compute surface and ground temperature implicitly.
511    o aim_v23 modification for new land model:
512      a) Treat separately land / ocean / sea-ice surface fluxes
513         to allow implicit computation of land & sea-ice surface temp.
514      b) add snow precipitation.
515    checkpoint52l_pre
516    
517    o fix problem (when 1 tile is empty) in min/max monitor.
518    o fix bug in timeAve (u,vZetatave in common block)
519    o no restoring terms under ice for pkg/seaice
520    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
521    o bug fix for pkg/seaice pickups
522    o change MNC call locations and add coordinate attributes
523    o mask vorticity at the corner ; affects global_ocean.cs output
524    o fix ini_curvilinear_grid ; test CS experiments with mpi
525    o aim.5l_cs: modify sea-ice fraction input file ; update output
526    o exf: Adding simple range check routine for exf fields after read
527    
528    checkpoint52k_post
529    o removed top-level directory "diags"
530      - we migrated these functions to pkg/timeave a long time ago
531    o fixed bug introduced in pkg/monitor
532    o accuracy ctrlprec = 32 insuffient for gradient checks using
533      averaged fields (I/O via cost_averages)
534      -> use ctrl.h in active_file*.F to control I/O precision.
535    o paramter list of CALL ADTHE_MAIN_LOOP
536    o added initial do_the_model_io to ecco
537    o set all ...Freq to zero after cost_final
538      taveFreq, dumpFreq, pChkptFreq
539    o MAIN and ECCO differentiability restored
540    
541    checkpoint52j_post
542    o fix nchklev in tamc.h for global_ocean...
543    o Bringing flow and store directives up-to-date
544    o Really weird thing!
545      call do_the_model_io from the_main_loop with parameters
546      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
547      TAF places a faulty re-call of initialise_varia
548      after cost_final call which should not be there!
549    checkpoint52j_pre
550    
551    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
552      error messages
553    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
554    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
555      debug output
556    o modfied mdsio_writefield.F to handle non-global files under exch2
557    o update AIM Cubed-Sphere exp (aim.5l_cs):
558      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
559    o update AIM Equatorial Channel exp:
560      use standard aim_v23 pkg and change the SST fields to be more realistic.
561    o globalFile now works with exch2
562    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
563      mon_vort3.F to make exch2 friendly with >1 tile per cube face
564    o limit timeave output for hi-res integrations
565    
566    checkpoint52i_post
567    o removed CPP_EEOPTIONS.h from verification/*/code
568    o updated the tiling for global_ocean_pressure
569    checkpoint52i_pre
570    
571    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
572      the old pkg/aim).
573    
574    checkpoint52h_pre
575    o shortened offending lines in exch2_send_rx?.template
576    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
577    o genmake2: add build & execute test for NetCDF code
578    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
579      old grid files, moved CPP_EEMACROS.h to pkg/exch2
580    o added useSingleCPUIO flag to monitor.F and mon_out.F
581    o added temporary hack for sea-ice dynamics on the cube:
582      metric terms are ignored and it is assumed that
583      there is no sea-ice on cube faces 1, 2, 4, and 5.
584    
585    checkpoint52f_post
586    o added exch2 cube routines to pkg/exch2
587    o modified hs94.cs-32x32x5 to use it
588    o added new grid files to hs94.cs-32x32x5
589    checkpoint52f_pre
590    
591    checkpoint52e_post
592    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
593      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
594    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
595      to work with implicit vertical advection and AB ;
596    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
597    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
598     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
599    checkpoint52e_pre
600    
601    o fix bug in impldiff when Nr=1 or Nr=2.
602    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
603    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
604    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
605      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
606    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
607    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
608    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
609    
610    checkpoint52d_post
611    o re-tiled many expts to allow comparison in multi-processor mode
612      - updated output accordingly
613      - changed hs94.128x64x5 to use intial T from file rather than use the
614        random number generator
615    o add infrastructure in model routines for fizhi and gridalt packages
616    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
617    o changes to permit hi-res, cubed-sphere, configuration
618      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
619      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
620      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
621        of surface winds for the cube
622      (A verification experiment, based on global_ocean.cs32x15, but with
623       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
624       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
625       complete with example surface forcing files and matlab scripts to look
626       at the output and compare it with that of global_ocean.cs32x15.)
627    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
628       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
629       to conform to the common rule.
630    o check-in the first version of the coupler + interfaces for multi-components
631       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
632       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
633       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
634       - ocean and atmos. share the same horizontal grid (no interpolation).
635       - exchanges between component and coupler is done in forward_step
636    o new verification experiment, cpl_aim+ocn:
637       coupled ocean - AIM atmosphere on cs32 grid.
638    
639    checkpoint52d_pre
640    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
641    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
642    
643    checkpoint52c_post
644    o Fixing OPTIONS files for use of exf:
645      - ALLOW_ECCO not needed
646      - ECCO_CPPOPTIONS.h should not be included from
647        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
648        as has been the case in the past
649      - All cal/exf related options are currently set in
650        single header file. Should remain so until we
651        agree on a consistent new policy.
652    o Removed all CPP options for cal package.
653      cal has no more CPP options.
654    o modified STOREs in GAD_ADVECTION
655    o corrected key comp. for passkey
656    
657    checkpoint52b_post
658    o new version: "thsice" of thermodynamic sea-ice pkg:
659     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
660     - modify fluxes but do not change theta directly;
661     - light cleaning of bulk_force pkg (still needed with thsice).
662     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
663       + output_thsice.txt to test thsice & bulk_force pkgs.
664    o put back grid & coriolis monitor output.
665    checkpoint52b_pre
666    
667    o call "do_the_model_io" at the beginning (=> dump initial state)
668    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
669    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
670      (need info on NUMBER_OF_PTRACERS)
671    o missing PTRACERS headers in some routines
672    o default tamc.h in pkg/autodiff supposed to crash
673      to ensure proper customization
674    
675    checkpoint52a_post
676    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
677      - moved surfaceTendencyTice from pkg/seaice to main code
678      - subroutine FREEZE_SURFACE now limits only surface temperature
679        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
680        => new output.txt for global_ocean.cs32x15 & global_with_exf
681      - keep the old version of FREEZE for backward compatibility;
682        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
683      - corresponding modifs for TAF directives
684    o added surface flux output variables to TIMEAVE_STATVARS
685    o time-averaged output for pkg/ptracers
686    o fix problem with ECCO-related divided adjoint
687      snapshot file was missing some ad-variables,
688      but no warning issued by TAF
689    
690    checkpoint52a_pre
691    o some bug fixes for #undef REAL4_IS_SLOW
692    
693    checkpoint52 = ecco_c52_e35
694    o after testing adjoints of checkpoint51u_post
695    
696    checkpoint51u_post
697    o this is the post-merge tag of the ecco-branch
698      (needs another clean checkout and re-testing)
699    o various natl_box_adjoint configs and results
700      but no input fields
701    o obcs adjoint not yet merged!
702    o adding ECCO global 1x1 and 2x2 degree configs
703    o updated/extended some store directives for seaice
704    o pkg/ecco now containes ecco-specific part of cost function
705    o top level routines the_main_loop, forward_step
706      supersede those in model/src/
707      previous input data.cost now in data.ecco
708      (new namelist ecco_cost_nml)
709    o in ctrl/ cleaned some cross-dependencies and updated CPP options
710    
711    checkpoint51t_post
712    o this is the pre-merge tag of the ecco-branch
713    
714    checkpoint51s_post
715    o cleanup: removed various obsolete #define-s
716    o pkg/grdchk
717      - renamed 'ph-grd 3' to 'grad-res'
718      - merged from ecco-branch
719        (remaining bug fixes for obcs gradient checks)
720      - additional high-precision output for testreport
721        (grep for 'precision_grdchk_result')
722    
723    checkpoint51r_post
724    o cleaned up or removed CPP_OPTIONS.h files
725    o updated results for some of the tests to reflect the new
726      optfiles (-ieee: -O0 instead of -O3)
727    
728    checkpoint51q_post
729    o cd_code:
730      - moved cd_scheme.F -> cd_code_scheme.F
731      - separate read_checkpoint from cd_code_ini_vars.F
732      - separated cd_code part from write_checkpoint
733      - updated AD_SOURCE, generated .flow
734      - added CD_CODE_VARS.h to the_main_loop
735      - Moving cd_code specific store dir.s to pkg/cd_code
736    o ctrl package totally restructured
737      - pack/unpack now optional and decoupled from
738        xx_/adxx_ I/O
739      - ctrl_pack/unpack cleaned
740        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
741      - confined inclusion of AD_CONFIG.h to where necessary.
742    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
743    
744    checkpoint51p_post
745    o create initial cd_code package
746      - WARNING: the initialization of fields within packages
747        is broken because INI_FIELDS (where READ_CHECKPOINT is
748        called) is called *before* PACKAGES_INIT_VARIABLES.
749        This seems to be backwards since
750        1) its important to initially zero the entire field including
751           the "halo" region
752        2) zeroing needs to be done *before* reading pickup info
753           and the pickup call might or might not happen in any
754           particular run
755      - this needs an overhaul for R2
756    o cleanup verification/*/code/GMREDI_OPTIONS.h
757    o cleanup testreport
758    
759    checkpoint51o_post
760    o bringing AD-related verif's up to date with genmake2
761      - carbon/
762      - global_ocean.90x40x15/
763      - hs.94.1x64x5/
764      - (front_relax/ )
765    o (more) consistent directory structure for AD-related verif.'s
766    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
767    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
768    o bug fix in find_alpha.F for MDJWF:
769      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
770        change rho -> rho-rhoConst
771      - replace call find_rho to find_rhonum
772    o initialisation of rFlx extended to full array (required by TAF)
773      and shifted to thermodynamics
774    o removed PTRACERS.h in ptracers routine
775    o added surfacetendencyPtr to S/R parameter list pracers_forcing
776    o Correcting initialisations for fVerU, fVerV.
777    o helping TAF to recognize dependency on kUp for
778      fVerU, fVerV
779    o Replacing delZ by delR in pkg/ctrl/
780    checkpoint51o_pre
781    
782    o undid all of cp51 pending some cleanups and discussion
783    o added the [#include "AD_CONFIG.h"] statement to all files that need
784       it for adjoint/tl #defines
785     o re-worked the build logic in genmake2 to support AD_CONFIG.h
786     o removed tools/genmake since it no longer works
787    
788    checkpoint51n_post
789    o modifications to make FREEZE flux visible to pkg/kpp
790      - moved surfaceTendencyTice from pkg/seaice to main code
791      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
792      - subroutine FREEZE now limits only surface temperature
793        (this means new output.txt for global_ocean.90x40x15,
794         global_ocean.cs32x15, and global_with_exf)
795    o added surface flux output variables to TIMEAVE_STATVARS
796    
797    checkpoint51n_pre
798    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
799    o added [#include "AD_CONFIG.h"] to all files that use the following
800      defines:
801      - ALLOW_ADJOINT_RUN
802      - ALLOW_TANGENTLINEAR_RUN
803      - ALLOW_ECCO_OPTIMIZATION
804    
805    checkpoint51m_post
806    o incorporating changes to get TAMC/TAF working in genmake2
807      - added new TAMC/TAF targets to the Makefile
808      - various cleanups related to package handling
809      - these changes should have no impact on the forward model
810    
811    checkpoint51l_post
812    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
813     - faster algorithm for cal_addtime.F
814     - higher precision arithmetic, where needed
815     - pkg/exf *startdate variables changed from calendar date to
816       model integration time
817    
818    checkpoint51l_pre
819    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
820    o enable to apply restoring on S & T only in a latitude band.
821    o update output (external_forcing_surf modif. change truncation errors)
822       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
823    
824    checkpoint51k_post
825    o change default to: useNHMTerms=.FALSE.
826     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
827       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
828     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
829        exp1, ideal_2D_oce
830     - change data file of oceanic exp (leave the results unchanged for now)
831       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
832    o set gravitySign automatically according to the vertical coordinate used
833      (and change sign: back to "logical" value: +1 when R increases downward)
834    o added an include barrier to the default CPP_OPTIONS.h and
835      removed the #include "PACKAGES_CONFIG.h" from it
836    o fix a bug in mom_fluxform (from chk51j_post)
837    
838    checkpoint51j_post
839    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
840    o adjusted some flow directives (dynamics, thermodynamics)
841    o added cubed-sphere case to test cost function
842    o heckpoint_lev?_directives.h now include
843      pkg-specific directives, whenever those are enabled.
844    o Moving pkg-specific flow directives to corresponding pkg
845      Moving pkg-specific differentiation list to corresponding pkg
846      Moving pkg-specific checkpoint-lev storing to corresponding pkg
847      ---> conventions are
848           - pkg_ad.flow
849           - pkg_ad_diff.list
850           - pkg_ad_check_lev?_dir.h
851    
852    checkpoint51i_post
853    o merge of the branch-genmake2
854      - knowingly breaks the older genmake
855      - automatic generation of all ALLOW_${PKG_NAME} defines
856      - new testreport supersedes older testscript
857    o large number of package inclusion and header cleanups
858    checkpoint51i_pre
859    
860    o new output for adjoin of global ocean vector invariant
861    o fix for checkpoint of thermodynamic seaice and bulk_force
862    o Steph gchem various cleanups
863    
864    checkpoint 51h_pre
865    o fixed some single quotes
866    o modify gchem pkg to be more versatile
867    o modifications to clean up dic pkg
868    o add pkg/cfc
869    
870    checkpoint51g_post
871    o provide links for ARPACK and ADM*TLM
872    o start removing verification/vero/
873    o update AD-related stuff
874      (in particular some IF-statements in model/src/ routines)
875    o adding to verification/global_ocean.90x40x15/ adjoint of
876      vector invariant setup
877    
878    checkpoint51f_post
879    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
880    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
881      of tracer Green's fucntions for ocean inversion project.
882    
883    checkpoint51f_pre
884    o Added on-the-fly spatial interpolation capability
885        "USE_EXF_INTERPOLATION" to pkg/exf.
886      - This is a temporary Cartesian-grid hack until
887        the super-duper ESMF coupler becomes available.
888      - See verification/global_with_exf/README for usage example.
889      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
890        flags and modified pkg/seaice accordingly.
891    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
892        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
893        non-local transport term.
894    
895    checkpoint51e_post
896    o pkg/mom_vecinv:
897      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
898      - add time-ave diagnostic of vorticity advection.
899    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
900    o atmospheric geopotential: - include water vapor effect;
901                                - use p^kappa in p* scaling.
902    o land pkg: read initial state from files.
903    o AIM : add stratospheric drag in the upper level
904    
905    checkpoint51d_post
906    o change function ILNBLNK (=> last non-blank char.) to return zero
907      (instead of the string length) when the string. char is empty
908    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
909    o modif's to restore TAMC compatibility
910      - avoid "_d" constructs in PARAMETER declarations
911      - avoid interrupting lines by comment lines
912    o Use cluster local disks for purely local I/O
913      vs. globally visible disks needed for ctrl stuff
914      (merged from ecco-branch)
915      - new active_file_loc... and mdsio_..._loc routines
916      - affected packages: autodiff, ctrl, grdchk, mdsio
917    
918    checkpoint51c_post
919    o introducing integer flag debugLevel
920      - debLevZero: suppress all output
921      - debLevA: standard
922      - debLevB: equivalent to current debugMode=.TRUE.
923    o introducing pathname variable mdsioLocalDir for mdsio
924      that can be specified at runtime
925      (relevant for cluster I/O to local disk)
926    `
927    >>>checkpoint51b_post
928    adjoint of ptracers
929    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
930    o extended state in checkpoint_lev?, etc.
931    o alternative ctrl/cost with tr1 or ptracer
932    o new comlev1_bibj_ptracers
933    o new ptracers.flow
934    o made ptracers_forcing same as external_forcing_s
935    o added verification for adjoint with ptracers
936      - adm. grdchk fail so far
937      - tlm. grdchk OK
938      - checked tapelev/comlev recomputations: OK
939    <<<checkpoint51b_pre
940    
941    checkpoint51a_post
942    o added code for biogeochemistry package
943      - new pkgs: dic, gchem
944      - new subroutine in ptracers
945    o modify code for biogeo packages
946      - in model/src and pkg/ptracers
947    
948    checkpoint51
949    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
950      - autodiff, ctrl, exf, grdchk, seaice
951      kept separate packages
952      - cost, ecco, obcs
953    o updating verification/internal_wave, verification/lab_sea
954      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
955    
956    checkpoint50i_post
957    o Preparing next differentiable checkpoint and sync
958      of MAIN vs. ecco-branch
959      - 1st step: this one is differentiable
960      - 2nd step: next(! not this) checkpoint will have updated packages
961                  from ecco-branch)
962    
963    checkpoint50h_post
964    o new package "land": provide surface BC for AIM.
965    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
966    o AIM: use true log-P extrapolation for near surface temp (= as in
967        F.Molteni paper) ; update aim.5l_cs output.
968    o New variable in PARM03 for more flexible pickups
969    o somewhat cleaned package initialisation sequence for
970      ctrl/ cost/ ecco/ in packages_... routines
971    
972    checkpoint50g_post
973    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
974      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
975      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
976        made the default because of faster convergence than ADI
977    
978    checkpoint50f_post
979    o exf totally restructured
980      - replaced all exf_set_ routines by one generic exf_set_gen.F
981        and made sure it's still differentiable
982      - split exf_getffields.F into new exf_bulkformulae.F
983      - exf_inscal_/exf_outscal_ suffixes consistent with field names
984      - updated adjoint/makefile and relevant verif. accordingly
985    
986    checkpoint50f_pre
987     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
988          + change Evap over land. (update aim.5l_cs output)
989     o added missing .cvsignores and made uniform across expts
990     o changed configuration of tidal_basin_2d expt
991     o added pkg/debug functions for tracing code in fatal crashes
992     o tidied pkg/monitor to use MONITOR_OPTIONS.h
993     o new fn in pkg/monitor to stop model if solution grows too big
994     o removed lots of single quotes from comments
995    
996    checkpoint50e_post
997    o make KPP work with PTRACERS
998     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
999       nearly a copy of kpp_transport_s
1000     - there is no analogue to SurfaceTendencyS, so I have to use
1001       gPtr(of the surface layer) instead
1002    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1003    checkpoint50e_pre
1004    
1005    checkpoint50d_post
1006    o change kpp output from multiple-record state files to single-record state
1007      files analogous to write_state.F
1008    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1009      analogous to the cg2d-related output.
1010    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1011      so that writing to internal file fn (with length 512) fails.
1012    checkpoint50d_pre
1013    
1014    checkpoint50c_post
1015    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1016    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1017    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1018    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1019    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1020    
1021    checkpoint50c_pre
1022    Merging from release1_p13:
1023    o bug fix for pkg/seaice dynamic solver
1024    o Added SEAICE_initialHEFF to pkg/seaice
1025    
1026    checkpoint50b_post
1027    o store u*,v* in gU,V instead of in guNm1,gvNm1
1028    o in order to put the momForcing out of the Adams-Bashforth:
1029      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1030      to timestep.F
1031    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1032    o re-generate output for highly sensitive test-exp:
1033       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1034    
1035    checkpoint50b_pre
1036    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1037    o corrected CPP option mismatch in exf_Bulk... functions for case
1038      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1039    
1040    checkpoint50a_post
1041    o Bug fix for merging between c50 and KPP.
1042      ikey was passed from thermodynamics to kpp_calc via
1043      common block rather than being recomputed in kpp_calc,
1044      in contradiction with new key itdkey.
1045      New key ikppkey created, and tamc.h headers updated.
1046    
1047    checkpoint50
1048    - 2nd step of merge with ecco-branch:
1049      merge changes in ecco-branch back into main trunk
1050    - bug fix in find_alpha
1051    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1052    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1053    - merged some sliced AD support routines
1054    
1055    checkpoint49
1056    merged from ecco-branch:
1057    o exf:
1058      - Enable initialisation of forcing fields to constant
1059        (runtime) values.
1060      - in exf_getffields.F
1061        Reduce i-/j-loop to interior domain, discarding overlaps.
1062        That also fixes wrong TAF-key computations for key_1, key_2
1063        with bulf formulae.
1064      - exf_init.F modify #ifdef for exf_init_evap
1065      - exf_getffieldrec.F, ctrl_getrec.F
1066        The following INT-usages are not safe:
1067          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1068          fldcount = int(fldsecs/fldperiod) + 1
1069        and were modified.
1070    o autodiff: checkpoint_lev...
1071      - updated storing for bulk formulae (some arrays were missing)
1072      - added state for seaice package
1073      - synchronized with main branch
1074    o DIVA:
1075      Modif.s in
1076      - the_main_loop.F
1077      - the_model_main.F
1078      and added cost_final_restore.F cost_final_store.F
1079      o With these changes, it is possible to fully separate
1080        the first forward run to compute the cost function (mdthe_main_loop)
1081        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1082        into separate model executions.
1083        This enables better tuning of DIVA to given queue sizes.
1084      o Loss of cost function value in consecutive DIVA runs is
1085        fixed by storing to 'costfinal' file.
1086      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1087        beginning/end of adjoint integration is accounted for.
1088      The current changes apply to TAF-1.4.26.
1089      TAF has one remaining bug, requiring one manual change
1090      (see MITgcm manual).
1091    o cal: synchronized between MAIN and ecco-branch
1092    
1093    checkpoint48i_post
1094    o Changes to restore differentiability of code w.r.t. previous tag
1095      (mostly adding new routines to make list and replacing
1096      pressure by totPhiHyd).
1097    o Updated and merged grdchk package
1098      - has both ADM and TLM checks
1099      - works for single- and multi-proc.
1100      - output cleaned
1101      - worked successfully for parallel DIVA
1102    o genmake:
1103      - Adding -platform=SP4
1104      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1105    o Modif. for DIVA:
1106      ctrl_unpack should not be called in intermediate DIVA interval.
1107      (similar thing would apply for active files such as
1108      tbar, sbar, psbar, which should not be reinitialised;
1109      only relevant for ecco-branch)
1110    
1111    checkpoint48h_post
1112    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1113    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1114    o Added SEAICE_initialHEFF to pkg/seaice
1115    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1116    
1117    checkpoint48g_post
1118    --- EOS:
1119    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1120      store total Potential in totPhyHyd for diagnostics & EOS.
1121    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1122    --- Pressure/geopotential gradient:
1123    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1124    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1125      ( changes results of global_ocean_pressure )
1126    o NLFS + z-coord.: add eta*Rho' contribution.
1127    o accurate phiHyd when using interface-W at the middle between 2 centers
1128     ( changes results of ideal_2D_oce )
1129    o includes r* 2nd term in potential gradient.
1130    
1131    checkpoint48f_post
1132    Merging from release1_p12:
1133    o Modifications for using pkg/exf with pkg/seaice
1134      - improved description of the various forcing configurations
1135      - added basic radiation bulk formulae to pkg/exf
1136      - units/sign fix for evap computation in exf_getffields.F
1137      - updated verification/global_with_exf/results/output.txt
1138    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1139      (SBO) core products, including oceanic mass, center-of-mass,
1140      angular, and bottom pressure (see pkg/sbo/README.sbo).
1141    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1142      to avoid negative values in shallow regions.
1143      - updated verification/natl_box/results/output.txt
1144      - updated verification/lab_sea/results/output.txt
1145    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1146    o Added useSingleCpuIO option (see PARAMS.h).
1147    o Updated useSingleCpuIO option in mdsio_writefield.F to
1148      work with multi-field files, e.g., for single-file pickup.
1149    o pkg/seaice:
1150      - bug fix in growth.F: QNET for no shortwave case
1151      - added HeffFile for specifying initial sea-ice thickness
1152      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1153    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1154      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1155    o pkg/seaice:
1156      - adjoint-friendly modifications
1157      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1158    
1159    checkpoint48e_post
1160    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1161    o dynamics: change definition of computational domain & adapt mom_fluxform
1162      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1163    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1164        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1165        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1166        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1167        inverted_barometer solid-body.cs-32x32x1
1168      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1169    
1170    checkpoint48d_post
1171    o in preparation for r*:
1172     a) use pre-computed gradient of hydrostatic potential:
1173        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1174     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1175        => affects results of glob_oce_pressure (different truncation error)  
1176      update output.txt of ideal_2D_oce & global_ocean_pressure
1177    
1178    checkpoint48d_pre
1179    o in preparation for r*:
1180      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1181      pass the 2 comp. of the grad. as arguments to momentum S/R.
1182      but for the moment, only used if it does not change the results.
1183    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1184    
1185    checkpoint48c_post
1186    Modifications in treatment of initial flux forcing controls
1187    to avoid extra storing of flux fields.
1188    
1189    checkpoint48c_pre
1190    o Added tidal_basin_2d experiment (currently 1D!)
1191    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1192    
1193    checkpoint48b_post
1194    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1195     (modification to pressure gradient not yet implemented)
1196    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1197      (for U & V) that are used for vertical advection of momentum.
1198    
1199    checkpoint48a_post
1200    o In preparation for r*, use temp. array to compute vertical transport
1201       in flux-form momentum pkg. => change results of few test-exp.
1202      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1203                        lab_sea, natl_box & plume_on_slope
1204    
1205    checkpoint48
1206    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1207    
1208    checkpoint47j_post
1209    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1210    o moved adexch from forward_step to addummy_in_stepping
1211    o added exch in ctrl_map_...
1212    o aveFreq.=0. at end of cost_final to avoid overwrite in
1213      reverse checkpointing loop
1214    o Yet more changes in gmredi:
1215      * adgmredi_calc_tensor
1216        avoiding all recomputation of gmredi_slope_limit
1217      * adgmredi_x/y/rtransport
1218        added flag for excessive storing to avoid recomp. of
1219        u/v/rtans, dTdx/y/z
1220        -> this is not really necessary and very memory-consuming
1221      * adgmredi_slope_psi:
1222        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1223      * gmredi_slope_limit
1224        re-activated full calculation of taperfct for case 'ac02'
1225    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1226    
1227    checkpoint47i_post
1228    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1229    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1230      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1231    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1232    o gmredi: fix few bugs.
1233    
1234    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1235    This will be a good checkpoint to plug into the ecco-branch.
1236    o few modif.'s to get latest version adjointed
1237      (mainly kick out code in ini_linear_phisurf)
1238    o modif's to run adjoint with exactConserv
1239    o case GM_BOLUS_ADVEC should be cleaned
1240      S/R gmredi_slope_psi should be cleaned
1241    o verification/carbon now has exactConserv=.TRUE.
1242    
1243    checkpoint47g_post
1244    o time-average AIM output: becomes independent from statvars time-average
1245      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1246    o After TAF bug fix:
1247      Tested adjoint of gmredi package.
1248      Tests were done with checkpoint47 rather than with latest
1249      checkpoint47f_post since the latter is broken for the adjoint
1250      verification/carbon/ contains both ADM and TLM gradient checks.
1251    Here they are, before they get changed/lost/stolen.
1252    Mostly modif.'s to fix numerical sensitivities.
1253    Gradient checks OK for
1254    - GM_taper_scheme:
1255      * clipping
1256      * ac02
1257      * linear
1258      * glw91
1259      * dm95
1260      * ldd97
1261    - GMREDI_OPTIONS:
1262      * GM_VISBECK_VARIABLE_K
1263      * GM_NON_UNITY_DIAGONAL
1264      * GM_EXTRA_DIAGONAL
1265      * GM_BOLUS_ADVEC
1266    in conjunction with data.gmredi parameters to be checked in
1267    in a few minutes under verification/carbon/code/
1268    
1269    checkpoint47f_post
1270    Merging from release1_p10:
1271    o modifications for using pkg/exf with pkg/seaice
1272      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1273        and SEAICE_EXTERNAL_FLUXES
1274      - pkg/exf CPP options EXF_READ_EVAP and
1275        EXF_NO_BULK_COMPUTATIONS
1276      - usage examples are Experiments 8 and 9 in
1277        verification/lab_sea/README
1278      - verification/lab_sea default experiment now uses
1279        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1280    
1281    checkpoint47e_post
1282    o created a tag prior to creating a branch
1283    
1284    checkpoint47d_post
1285    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1286      at the bottom boundary had an erroneous half slip boundary condition
1287    o added bottom drag and no slip boundary condition capabilities to
1288      oceanic pressure coordinates code
1289    o added new verification experiment global_ocean_pressure, this experiment is
1290      also described in the tutorial section of the manual
1291    checkpoint47d_pre
1292    
1293    checkpoint47c_post
1294    o Added a verification experiment for a global cubed-sphere ocean run
1295      -  verification/global_ocean.cubed32x32x30
1296      -  uses pkg/therm_seaice and pkg/bulk_forcing
1297    
1298    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1299    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1300      when using P-coordinate; only implemented for atmospheric config.
1301    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1302      NOTES: requires option NONLIN_FRSURF to be "#define".
1303    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1304    
1305    checkpoint47b_post
1306    Merging from release1_p9:
1307    o pkg/seaice
1308      - removed GOTO's and added taf directives
1309      - double precision constants to reduce the g77 (Linux)
1310        to F77 (SGI) differences reported in release1_p8
1311    o tools/genmake
1312      - added SGI options
1313    o verification/testscript
1314      - updated to that of checkpoint47a_post
1315    o verification/global_ocean.90x40x15/input/eedata
1316      - modified for SGI f77 compatibility
1317    o verification/lab_sea
1318      - added description of sea-ice model
1319      - added missing matlab routines
1320      - added test of thermodynamics parallelization
1321    
1322    checkpoint47a_post
1323    o new pkg: aim_v23
1324     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1325       for now, keep the same surface forcing as before.
1326     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1327     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1328     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1329    o add diagnostic of surface correction term in monitor output
1330    
1331    o bulk_force and therm_seaice
1332    - Two packages:  bulk_force (Bulk forcing)
1333      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1334    - Earlier integration from Stephaine Dutkiewicz
1335      and Patrick Heimbach.
1336    - Two ifdef statements for compile time,
1337       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1338    
1339    checkpoint47
1340    differentiable version of checkpoint46n_post
1341    o bug fix in quasihydrostaticterms
1342    o * "clean" adjoint code (in terms of extensive recomputations)
1343        can now be obtained for all GMREDI options (i.e. for
1344        - GM_VISBECK_VARIABLE_K
1345        - GM_NON_UNITY_DIAGONAL
1346        - GM_EXTRA_DIAGONAL
1347        - GM_BOLUS_ADVEC )
1348      * However, wrong gradient check problem remains unsolved.
1349      * New CPP options have been introduced for different
1350        tapering schemes
1351    o external_fields_load now part of differentiation list
1352    o pressure needs multiple storing;
1353      would be nice to have store_pressure at beginning or
1354      end of forward_step, e.g. by having phiHyd global (5-dim.)
1355      (NB: pressure is needed for certain cases in find_rho,
1356      which is also invoked through convective_adjustment).
1357    o recomputations in find_rho for cases
1358     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1359    o #define ATMOSPHERIC_LOADING should be differentiable
1360    o ini_forcing shifted to begining of initialise_varia
1361    o Incorporating QNVS line search routines into MITgcm
1362      (this is separate code, and therefore not under pkg)
1363      lsopt/, optim/
1364    o Updated verification/carbon/
1365      - #define GM_VISBECK_VARIABLE_K
1366      - GM_taper_scheme    = 'ldd97'    
1367    
1368    checkpoint46n_post
1369    Merging from release1_p8:
1370    o verification/natl_box:
1371      updating new external_fields_load routine
1372    o New package: pkg/seaice
1373      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1374      The sea-ice code is based on Hibler (1979-1980).
1375      Two sea-ice dynamic solvers, ADI and LSR, are included.
1376      In addition to computing prognostic sea-ice variables and diagnosing
1377      the forcing/external data fields that drive the ocean model,
1378      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1379      The implied surface heat flux is then stored in variable
1380      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1381      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1382      non-local transport term.  Because this call precedes model
1383      thermodynamics, temperature under sea-ice may not be "exactly" at
1384      the freezing point by the time theta is dumped or time-averaged.
1385      N.B.: fairly large differences in accuracy occur across
1386            different platforms/compilers; comparison between
1387            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1388            generated output gives:
1389       T           S           U           V
1390      C D M    c        m  s        m  s        m  s        m  s
1391      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1392      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1393      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1394    
1395      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1396    o GAD:
1397      - generated new common blocks to account for call of
1398        same gad routines with differing traceridentities
1399        (needed to modify tracerIdentity indices in GAD.h)
1400      - generated separate common blocks for case useCubedSphereExchange
1401        (Department of Futurology)
1402      - parameter lists to gmredi_?transport: added tracerIdentity
1403      - added new key indices to tamc.h
1404    o external_fields_load:
1405      - added this routine to TAF list
1406      - needed to make some common blocks global and additional storing
1407        along the same lines as exf package (checkpoint_lev?_directives.h)
1408    o exf:
1409      updated external forcing package
1410      - bug fixes carried over from ecco-branch
1411        (missing OBCS_OPTIONS.h in two routines)
1412      - enable easy to use "no forcing".
1413      - added exf I/O for atmospheric loading
1414      - added exf I/O for runoff data
1415      - transfered scaling between exf <-> MITgcm to exf namelist
1416    o Adding new verification experiment global_with_exf.
1417      This verification experiment is almost identical to the
1418      global_ocean.90x40x15 experiment, except that it uses
1419      the exf (and cal) package instead of the
1420      external_fields_load routine (cf README file).
1421    
1422    checkpoint46m_post
1423    o modified testscript to return -- when there are no lines of "%MON" output
1424    o added new flag "quasiHydrostatic" for QH mode
1425      and new routine quasihydrostaticterms()
1426    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1427      New routine: mom_u_coriolis_nh()
1428    o fixed sign of non-hydrostatic metric terms in u and v equations.
1429      Depend on correct sign of gravitySign.
1430    o added work.pc* to .cvsignore in aim directories using ifc
1431    o introduced flag for controllin non-hydrostatic metric terms
1432    o removed gravitySign from PARM04
1433    o switched to g77/ifc from pgf77 in aim experiments
1434    
1435    checkpoint46l_post
1436    o made convective adjustment work with pressure coordinates:
1437     - changed the direction of k-loop in convective_adjustment.F for the
1438       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1439     - adjusted the reference pressure k-index in convective_adjustment.F
1440     - adjusted the convection condition in convect.F (in analogy to
1441       calc_ivdc.F)
1442     - convective_adjustment no longer computes anything on the halos
1443     - removed the warnings about negative salinity from find_rho.F and
1444       find_alpha.F; instead the new routine look_for_neg_salinity, called
1445       at the beginning of find_rho, find_alpha, and find_beta, does a
1446       check of the entire slice, if CPP-option
1447       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1448    checkpoint46l_pre
1449    
1450    checkpoint46k_post
1451    o fixed the verification/global_ocean.90x40x15 experiment:
1452     - new bathymetry (the world according to A., JMC, and M.)
1453     - new initial fields and forcing fields (*.bin files)
1454     - new POLY3.COEFFS (for the next release one should switch to a full
1455       equation of state: JMD95P or MDJWF)
1456     - fixed several errors and redundancies in the data file
1457     - experiment uses looped cells
1458     - added matlab directory with diagnostic scripts for plotting of output
1459    
1460    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1461     - read AIM physics parameters from a file (data.aimphys)
1462     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1463    
1464    checkpoint46j_post
1465    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1466    o move wVel computation at the end of the time step, in S/R integr_continuity
1467    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1468    o update timeave pkg for wVel diagnostic.
1469    checkpoint46j_pre
1470    
1471    checkpoint46i_post
1472    o Clean up AIM package (and keep the results unchanged):
1473      include CPP_OPTION and use IMPLICT NONE in all routines ;
1474      declare all the variables _RL ; use _d 0 for all numerical constants.
1475      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1476    
1477    checkpoint46h_post
1478    o cleaned up the use of rhoNil and rhoConst.
1479      - rhoNil should only appear in the LINEAR equation of state, everywhere
1480        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1481        and the dynamical equations are all divided by rhoConst
1482    o introduced new parameter rhoConstFresh, a reference density of fresh
1483      water, to remove the fresh water flux's dependence on rhoNil. The default
1484      value is 999.8 kg/m^3
1485    o cleanup up external_forcing.F and external_forcing_surf.F
1486      - can now be used by both OCEANIC and OCEANICP
1487    checkpoint46h_pre
1488    
1489     Added code to convert surface volume flux (fresh water) into
1490     a mass flux when using P coordinates in the ocean (OCEANICP).
1491     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1492    
1493    checkpoint46g_post
1494    o Include a new diagnostic variable phiHydLow for the ocean model
1495      - in z-coordinates, it is the bottom pressure anomaly
1496      - in p-coordinates, it is the sea surface elevation
1497      - in both cases, these variable have global drift, reflecting the mass
1498        drift in z-coordinates and the volume drift in p-coordinates
1499      - included time averaging for phiHydLow, be aware of the drift!
1500    o depth-dependent computation of Bo_surf for pressure coordinates
1501      in the ocean (buoyancyRelation='OCEANICP')
1502      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1503        Theta, Salinity, and Pressure in the parameter list. This routine is
1504        presently contained in find_rho.F. This routine does not give the
1505        correct density for 'POLY3', which would be a z-dependent reference
1506        density.
1507    o cleaned up find_rho
1508      - removed obsolete 'eqn' from the parameter list.
1509    o added two new verification experiments: gop and goz
1510      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1511    checkpoint46g_pre
1512    
1513    checkpoint46f_post
1514    o Enable tangent linear (forward mode) gradient checks:
1515      - extended active file handling to g_... files
1516      - added TANGENT_SIMULATION to theSimulationMode
1517      - extended grdchk package accordingly
1518    o added tangent linear setup in verification/carbon/code_ftl
1519    o added adjoint setup in verification/front_relax/code_ad
1520    
1521    checkpoint46e_post
1522    o Added new equation of state -> MDJWF
1523      - EOS of McDougall et al., 2002, JAOT, submitted
1524      - caveat: the equation of state is only valid for a smaller (more
1525        realistic?) range of values than JMD95P/Z and UNESCO
1526      - added masks to the calculation of pressure in store_pressure
1527      - added more check values for density in check_eos (ini_eos.F), some of
1528        the old check values are out of the range of the MDJWF-eos, so don't
1529        expect perfect matches for those
1530    checkpoint46e_pre
1531    
1532    checkpoint46d_post
1533    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1534      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1535      case of pressure coordinates. eosType='JMD95Z' in
1536      combination with buoyancyRelation='OCEANICP' now causes an error.
1537    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1538      in find_alpha/beta.
1539    checkpoint46d_pre
1540    
1541    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1542      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1543    
1544    checkpoint46c_post
1545    o Changes necessary for ocean in p-coordinates
1546     -  Added new buoyancy relation = 'OCEANICP'
1547     -  Added new parameters = gravitySign (this used to be contained inside
1548        the factor dRdZ which I added when we first switched to R coordinates).
1549     X GM/Redi is not compatible (yet)
1550     X bottom drag and no-slip need to be debugged.
1551    checkpoint46c_pre
1552    
1553    checkpoint46b_post
1554    o Added new equation of state -> JMD95Z and JMD95P
1555      - EOS of Jackett and McDougall, 1995, JAOT
1556      - moved all EOS parameters into EOS.h
1557      - new routines ini_eos.F, store_pressure.F
1558    o Added UNESCO EOS, but not recommended because it requires
1559      in-situ temperature (see JMD95)
1560    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1561      unesco.f to be used with POLY3
1562    checkpoint46b_pre
1563    
1564    checkpoint46a_post
1565    o Added (atmospheric) pressure loading
1566      - new field in FFIELDS.h, etc...
1567      - new cpp flag ATMOSPHERIC_LOADING
1568    o Changed hFacC to _hFacC in calc_phi_hyd.F
1569    o Added SHORTWAVE_HEATING to some files for consistency
1570    checkpoint46a_pre
1571    
1572    checkpoint46
1573    further merges from release1_p5
1574    o new ctrl package
1575      - adopted from ECCO environment to enable optimization
1576      - added Eliassen Palm fluxes to controls
1577    o added Eliassen Palm flux controls to gradient check package
1578    o cost package
1579      - Compatible with new ctrl package
1580      - added Eliassen Palm cost hooks
1581      - modif's of existing cost functions
1582    o Adjoint-related bug fixes in kpp:
1583      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1584      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1585    o autodiff package
1586      - flow directives:
1587        + new for S/R do_the_model_io
1588        + enhanced for S/R checkpoint
1589        + new gmredi.flow
1590      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1591        disable adcommon.h/g_common.h by default.
1592      - fixed problem for adjoint of global_max
1593    o modified verification/carbon/
1594    o New setup for adjoint of global_ocean
1595    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1596    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1597    o incorporated hooks for sponge layer code (external_forcing.F)
1598    
1599    checkpoint45d_post
1600    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1601    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1602      (affects plume_on_slope "cg2d" output)
1603    o add new parameter deltaTfreesurf for free-surface time stepping
1604    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1605    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1606    o change phiMin in exp1 (to agree with documentation)
1607    o add new flags:
1608     - T,S forcing inside/outside Adams-Bashforth
1609     - turn off temp,salt advection and/or forcing
1610     - for each tracer, define internal flag for multiDimAdvection & A-B
1611    o monitor: change definition of KE to check conservation of Energy
1612    
1613    checkpoint45c_post
1614    o Removed f90 comments ("!")
1615    o Modified initialisations to enable exf package for MITgcm
1616      (without invoking ECCO_PACKAGE).
1617    o modifications to gradient check package (Martin Losch)
1618      - enable centered differences
1619      - modified format of standard output
1620    
1621    checkpoint45b_post
1622    o cleaned exchange calls in cg2d
1623    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1624    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1625      to configure barotropic setup (Martin Losch)
1626    o moved some initialisations within bi,bj loop in dynamics
1627      (TAF flow dependency)
1628    o in initialise_varia, moved call packages_init_variables
1629      before convective_adjustment_init
1630      (corresponding adjustment of TAF tape initialisation).
1631    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1632    
1633    checkpoint45a_post
1634    o compute Rho over the whole domain (extend iMin,jMin indices)
1635    o specific exchange for X-slice domain (case Ny=1)
1636    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1637    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1638    
1639    checkpoint44h_post = checkpoint45
1640    o Fix to restore differentiability:
1641      place at which packages_init_variables is called in
1642      initialise_varia is crucial for reverse control flow.
1643    o modifications in GMRedi to enable stable adjoint
1644      (corresponding modif's in thermodynamics, dynamics)
1645    o added missing hook for sponge layer code in external_forcing
1646    o modified test cost functions
1647    o storing in gad_advection (plus removal of write(0,*)!
1648    o missing headers TR1.h added in convective_adjustment routines
1649    o errorMessageUnit set non-equal zero in eeboot
1650      (conflict on some platforms, e.g. IBM SP3)
1651    o modified carbon verif.
1652    
1653    checkpoint44h_pre
1654    o vertical grid option: allow to put the Interface at the middle between
1655      2 cell-centers ; replace delZ in pkg/kpp by drF.
1656    o GM Advective form: Tracers are advected using the residual transport (=
1657      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1658    
1659    checkpoint44g_post
1660    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1661      results) ; ifdef missing in thermodynamics.F
1662    
1663    checkpoint44f_pre,checkpoint44f_post
1664    o added PTRACERS package
1665      This allows an arbitrary number of passive tracers to be integrated
1666      forward simultaneously with the dynamicaly model.
1667      + Implemented so far:
1668        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1669        - I/O and checkpointing
1670        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1671      + Not implemented so far:
1672        - KPP
1673        - OBCS
1674      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1675        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1676        line in data.pkg.
1677      + This package is disabled by default since it increases storage.
1678    
1679    
1680    o testscript: added -cleanup option
1681    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1682                 b) enable to filter 2D fields.
1683    
1684    checkpoint44e_pre,post
1685    o re-wrote convective adjustment to use pre-calculated weights
1686      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1687      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1688      Original calls to convect() still in place.
1689    
1690    chkpt44d_pre,post
1691    o added missing EXCLUDE_MONITOR flags
1692    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1693      (incompatible typ in MIN/MAX expressions caused problems
1694      on IBM SP3)
1695    o in genmake added variable MAKEDEPEND
1696      plus resetting for case SunOS
1697    o added timer_stats.c routine for IBM SP3
1698    o removed variables in dynamics
1699    !!! I forgot to create tag chkpt44d_pre !!!
1700    !!! But chkpt44d_pre = chkpt44c_post    !!!
1701    
1702    o real fresh water flux implemented with non-linear free-surface.
1703    
1704    chkpt44c_pre,post
1705    o few fix (mask in shap_s2, EmPmR in external_field_load,
1706      USE_NATURAL_BCS in solve_for_P);
1707    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1708    
1709    checkpoint44b_pre/_post
1710    o merge of relevant stuff from the ecco-branch:
1711      - genmake: removed $S64 overwrite for case SunOS
1712      - pkg/exf: update and corrections for field swapping and obcs
1713      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1714                  harmonized between ECCO and MITgcm
1715      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1716                      updated checkpointing_lev... lists for obcs
1717      - model/src: minor changes in forward_step, plot_field
1718                   added directive for divided adjoint in the_main_loop
1719      - pkg/mdsio: added mdsio_gl_slice
1720    
1721    o check parameters & config (chkpt44a_pre,post)
1722    o OBC and NonLin_FrSurf.
1723    
1724    checkpoint44
1725    o fix bug in mom_vi_del2uv
1726    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1727    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1728    o update AIM experiments (NCEP input files)
1729    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1730    o added some stuff for AD
1731    
1732    checkpoint43
1733    o added two new advection tests
1734    o added global 4x4 degree ocean test
1735    o added test of H&S94 with free surface on cube
1736    o some final mods for gradient check, adjoint,...
1737    
1738    checkpoint42
1739      Fixed AD-related problems:
1740    o Store directives up-to-date with re-arranged Adams-Bashforth
1741      (mainly thermodynamics.F)
1742    o New store directives for multi-dim. advection schemes
1743      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1744      * new common block and key passkey
1745      (mainly gad_advection.F)
1746    o Modified store directives for split of dynamics/thermodynamics
1747      for the case ALLOW_KPP
1748    o Cleaned argument list for timestep_tracer.F
1749    
1750    checkpoint41
1751    o re-formatted/added comments in prologues of key subroutines
1752      to work with protex
1753    
1754    checkpoint40
1755    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1756    o added FLT (floats) package from Arne along with demo. experiment
1757    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1758      implementation of forward-in-time forcing terms
1759    o more mods for non-linear free-surface including new variable
1760    o modified multi-dim method to work on cube
1761    o bug fix in KPP (from DM)
1762    
1763    checkpoint40pre9
1764    o added DST advection schemes
1765    o fix MPI bug on SGI's
1766    o modifications for non-linear free-surface
1767    o fixed conditionals for fixed flow/passive tracer only mode
1768    o added tension/strain form of stress tensor
1769    o changes to commenting of arguments for TAF/TAMC
1770    o added/updated many matlab scripts
1771    o added multi-dimensional advection method for tracers
1772      
1773    checkpoint40pre8
1774    o new package rw/
1775      Added method for dumping intermediate local arrays:
1776      mdsio_writetile - same as mdsio_writefield except works from inside
1777                        bi,bj loop
1778      mdsio_writelocal - same as mdsio_writetile except works for local
1779                         arrays
1780      write_local_r? - higher-level wrapper for mdsio_writelocal
1781      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1782      Example given at end of mom_vecinv.F that dumps some local arrays.
1783    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1784      control flux-form versus vector invariant code.
1785      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1786      or genmake -DISABLE ...
1787    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1788      (additional storing is now needed for case vecinv;
1789      currently nothing implemented to switch this storing off
1790      in case fluxform is used since no CPP flag available).
1791    
1792    checkpoint40pre7
1793    o bug fix in dynamics.F
1794      calc_viscosity called before k=1,Nr loop.
1795    o added some #ifdef's ALLOW_PASSIVE_TRACER
1796    o cleaned initialisations in ctrl_map_ini
1797      related to TAF
1798    
1799    checkpoint40pre6
1800    o split dynamics into thermodynamics & dynamics
1801    o corresponding split of calc_diffusivity into
1802      calc_diffusivity, calc_viscosity
1803      (kpp_calc_diff, kpp_calc_visc).
1804    o Added diffkr, kapgm to control variables
1805    o bug fix in gmredi_slope_limit for ldd97
1806    
1807    checkpoint40pre5
1808    o proper initialization of Adams-Bashforth time stepping
1809      + uses forward step for very first step of model (iter=0)
1810    o re-generated *all* output since almost all output is modified by this
1811      change (sorry but we've been putting this one off for about 2 years)
1812      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1813        *not* regenerated since they are already out of date and I don't
1814        want to create the impression that they are suddenly working.
1815    o removed KAP stuff for DEC's
1816    o modified/added many .cvsignore files in */code and */input
1817    o added new expt "solid-body.cs-32x32x1"
1818      + this uses an alternative form of ini_curvilinear_grid.F which
1819        is not necessarily any better than the current one...
1820    
1821    checkpoint40pre4
1822    o added re-initialisations of utrans,vtrans,rtrans in
1823      calc_common_factors which are crucial for TAF.
1824    o extended iMin,jMin range for calc_common_factors,
1825      calc_diffusivity
1826    o added option ALLOW_PASSIVE_TRACER
1827    o a few minor updates and fixes
1828    
1829    checkpoint40pre3
1830    o created calc_gtr1.F for gad package
1831    o split the_main_loop and re-introduced forward_step
1832    o some recomputations of nIter0 for TAMC
1833    
1834    checkpoint40pre2
1835    o Updated to latest branch of AJA, JMC
1836    o Added gradient check package
1837    o Added routines for passive tracer handling
1838    o Added carbon sequestration sensitivity experiment
1839    
1840    checkpoint39
1841     o Modifications and fixes to support TAMC
1842       (mainly missing or wrong directives)
1843     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1844       in addummy_in_stepping
1845     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1846     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1847     o Included following packages:
1848       cal: calendar
1849       exf: external forcing
1850       ecco: essential routines to control use of cal, exf
1851             (NB: this is not the full ECCO environment)
1852     o disabled some packages by default in genmake
1853    
1854    checkpoint38
1855     o see notes_c37_adj.txt
1856     o corrected wrong layer index in external_forcing_t
1857     o replaced the_main_loop/forward_step by the_main_loop
1858     o removed forceoutput from write_state
1859       (replaced criteria for initial/final state)
1860     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1861    
1862    checkpoint37
1863     o mdsio.F routine split and packaged in pkg/mdsio
1864       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1865        used unless genmake -disable=mdsio)
1866     o allow a more precise surface-geopotential gradient for the atmosphere
1867       taking into account the change in space of Alpha (=1/rho) at the surface.
1868     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1869       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1870     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1871       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1872       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1873     o Time-Average diagnostics defined as a pseudo package "timeave".
1874     o pickup files : old pickup (before c35) did not work with new code (c35
1875       and after) unless activating 2 commented lines in initialise-varia.
1876     o Non-Hydrostatic pickup file Pb fixed.
1877     o bug with Rigid-lid version (since c35) fixed.  
1878    
1879    checkpoint36
1880     o implement Crank-Nickelson barotropic time-stepping
1881     o recover Time-Average diagnostics
1882     o fix Pb in checkpoint (PR#19)
1883     o AIM become a standard package ; clean unused CPP_kees
1884    
1885    checkpoint35
1886     o subtantial rewrite of dynamics.f
1887     o allows staggered time-stepping
1888     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1889     o added bottom drag (linear + quadratic)
1890    
1891    checkpoint34
1892     o Modified exchange routines for correct reverse simulation.
1893     o Added verification output to comply with bug fix in impldiff.F
1894       as of c33 (exp2, natl_box).
1895     o Corrected store directives in dynamics.F
1896     o Corrected array boundaries in impldiff.F
1897     o Corrected array dimensions in gmredi.
1898       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1899     o Added routine GLOBAL_SUM_INT to global_sum.F
1900     o Added mdsio_gl.F for ECCO purposes.
1901    
1902    checkpoint33
1903     o Fixed bug in lower BC in impldiff.F
1904     o Fixed confusion about units of forcing arrays in FFIELDS.h
1905       namely Fu,Fv,Qnet,Qsw,EmPmR:
1906       - Removed verification/natl_box/code/external_fields_scale.F
1907         (did not differ from that in model/src)
1908       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1909         (see FFIELDS.h for description)
1910       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1911         kpp_calc.F and kpp_transport_t.F
1912       - Removed model/src/external_fields_scale.F and calls to it
1913       - verification/natl_box uses flux data with "atmospheric" sign so
1914         a special version of external_fields_load.F is used to
1915         change the data as it's read in. This way, the arrays
1916         have the right units and signs at all times tha a user could
1917         possibly use them.
1918     o Corrected genmake to delete a temporary file during configuration
1919    
1920    checkpoint32
1921     o Scaling of forcing fields moved from external_forcing.F to
1922       external_fields_scale.F, called directly after loading fields.
1923     o Surface relaxation terms added to surface tendency fields in
1924       extra subroutine.
1925     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1926       fields.
1927     o Changes in GMRedi to comply with packaging structure.
1928     o Modifications and bug fixes in KPP package.
1929     o Verification experiment for KPP added (verification/nat_box/)
1930    
1931    checkpoint31
1932     o Packages interface brought in line with defined standard
1933       -> new routines packages_...F
1934       -> changes in initialise_fixed.F, initialise_varia.F
1935       -> enables initialisation interface for ECCO package
1936     o Rescaling of external forcing fields immediately after read
1937       (removed from external_forcing.F)
1938       -> new: surface_fields_scale.F
1939       -> affects ini_foorcing.F, external_fields_load.F
1940     o Computation of surface tendencies before tendency updates.
1941       -> new: external_forcing_surf.F
1942     o Change of variable names useGMRedi, useKPP, useECCO
1943     o Further changes in dynamics.F, impldiff.F for TAMC
1944     o Tested for experiments 0, 2, 4.
1945       - not yet tested for GMRedi.
1946       - not yet tested for KPP.
1947    
1948    checkpoint30
1949     o Updates for OBCs
1950     o New experiment for test OBCs (internal_wave)
1951     o New output.txt in verification/exp4/results/
1952     o Updates for KPP: calculation of viscosity corrected, new variables
1953       kpp_dumpFreq and kpp_taveFreq
1954     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1955       and entry for T90 in genmake
1956    
1957    checkpoint29
1958     o packaged KPP and GM/Redi
1959    
1960    checkpoint28
1961     o Corrected initialization of hFacMin for difference vertical coordinates
1962     o Modified calculation of partial cell thickness to more robust algorithm
1963     o config_summary.F: replaced write_1D_... by write_0D_...
1964       read_write.F: added subroutines write_0D_...
1965     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1966       included some initialisations required for TAMC.
1967     o routine calc_isoslopes: modified sqrt computation to make it
1968       differentiable for zero argument.
1969     o routines dynamics, impldiff:
1970       included store directives and tape key computations required for TAMC.
1971     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1972    
1973    checkpoint27
1974     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1975       formulation works properly with variable resolution.
1976     o restructured the calling tree between the_model_main() and dynamics()
1977     o split initialise() into initialise_fixed() and initialise_varia()
1978     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1979       in new routine ini_psurf()
1980    
1981    checkpoint26
1982     o moved some #ifdef in optional routines to encompass everything
1983       except the argument declarations. This was using up some memory.
1984     o fixed macros like _ADT to work with both versions of Linux cpp
1985     o cleaned up some unused and uninitialized variables
1986       (helps when debugging with strict compile options)
1987     o split up CPP_EEOPTIONS.h into options and macros
1988       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1989     o patch for 2 processor JAM mode
1990    
1991    checkpoint25
1992     o updates for OBCs and NH
1993     o dramatically reduced memory usage
1994     o added "JAM" routines for use on Artic network
1995     o parameterization of convection by implicit vertical diffusion
1996     o added a diagnostic of convective index
1997     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1998       (this is was partly for OBCs and NH but also in anticipation of
1999        an explicit free-surface option)
2000     o initial state input files for U and V
2001    
2002    checkpoint24
2003     o Removed some spurious "REAL"s
2004     o Updated KPP to latest version from JPL
2005     o Added a COS(latitude) in horizontal viscosity
2006    
2007    checkpoint23
2008     o Added del^4 diffusion for salt and temperature
2009     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2010    
2011    checkpoint22
2012     o Made many small changes: implicit none, format(i5), etc...
2013     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2014    
2015    checkpoint21
2016     o Introduced new I/O package that supports direct-access records (mdsio.F)
2017     o Split-up mid-level I/O routines
2018     o Updated input data for experiments 0,1,2,4 and 5
2019     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2020    
2021    checkpoint20
2022     o Tidied up open-boundaries some more
2023     o Added non-hydrostatic code
2024     o Fixed some input data
2025     o Modified MPI start-up to work in "coupled" context.
2026    
2027    checkpoint19
2028     o Tidied up directory structure for verification experiments.
2029     o Added new code for open boundaries.
2030     o Corrected advective terms near boundaries.
2031     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2032     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2033     o Split default parameters out of ini_parms.F into set_defaults.F.
2034    
2035    checkpoint18
2036     o Further changes for optional code generation with
2037       CPP - ugh!
2038    
2039    checkpoint17
2040     o Beginning to incorporating modularity
2041       for supporting atmos. and ocean configs.
2042     o Small changes for TAMC complinace
2043     o New ultra simple test case. Barotropic box
2044       configuration "exp0".
2045    
2046    checkpoint16
2047     o Minor changes to exchange routines to support
2048       accumulation in reverse mode. Adjoint of an
2049       assignment is an addition.
2050     o Changes to support compilation by TAMC (LR(1)
2051       syntax) and by g77 under Linux ( 72 character
2052       limit ).
2053    
2054    checkpoint15
2055     Rewrote exchange routines to allow
2056     o General tile <-> tile connectivity.
2057     o TAMC reverse mode flag ( is this really needed? )
2058     o Variable width overlap and exchange region widths.
2059     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2060       shmput/shmget, VIA, SYSV shmem and every other cool
2061       communication method.
2062    
2063    checkpoint14
2064     Consistent isomorphism chages made. These allow dynamical core
2065     to support both pressure and meters as a vertical coordinate.
2066    
2067    checkpoint13
2068     Release which corrects global_max problem and a couple
2069     of KGM time-averaging diagnostic errors. Also contains
2070     a double-gyre experiment setup as well as the baseline
2071     4 degree global template. The double gyre template is
2072     organised to allow it to be applied automatically to
2073     the baseline configuration.
2074    
2075    branch-point-rdot
2076     A few tidy-ups have been made bt the real point of this
2077     check-point (excuse the pun) is to allow a branch to be
2078     made for the purposes of adding the rDot alterations.
2079     I don't want to commit the rDot to the main-trunk until
2080     we've actually tested it...
2081    
2082    checkpoint12
2083     Tidy up and added generic genmake script (formerly
2084     configure script).
2085     Released to testers.
2086    
2087    checkpoint11
2088     Re-arranged initialise() and introduced ini_vertical_grid()
2089     and ini_masks_etc().
2090    
2091    checkpoint10
2092     Introduced the configure script.
2093     Separated out the diags package.
2094     Added template for writing time-averages of tile/intermediate quantities.
2095     Updated SIZE.h in exp2 and made the data big-endian.
2096    
2097    checkpoint9
2098     MPI fix. Filename changes (meta/data). salbin*y stuff.
2099     General tidy-up.
2100     SST.bin SSS.bin added to verification/exp2
2101    
2102    checkpoint8
2103     Inludes time-dependant forcing and time-averaging.
2104     Works at 4x4 and 2.8125x2.8125 global
2105    
2106    checkpoint7-4degree-ref
2107     Branch from checkpoint7. Released for application to
2108     global modeling and general modeling - process studies, regional
2109     model etc..
2110     Configured for verification/exp2 - 4 degree global, two process.
2111    
2112    checkpoint7
2113     Created by cnh
2114     Simple 4 degree global simulation
2115     configuration.
2116     Includes climatological wind,
2117     hydrography, bathymetry etc
2118     Does not include Heat Flux and E-P
2119    
2120  checkpoint6  checkpoint6
2121   Created by cnh   Created by cnh
2122   merged checkpoint5 with CD and   merged checkpoint5 with CD and

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