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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.405 by dimitri, Mon Dec 6 06:08:24 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
7    o implement Implicit Vertical advection for pTracers
8    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
9      (implemented also for implicit vertical diffusion & advection)
10    o OBCS: extend application of tracer open boundary conditions
11      to a strip beyond the boundary of width Olx/Oly
12    o add call monitor to TAF set of required calls (flow directives)
13      and include in natl_box_adjoint
14    o untangle a few ifdefs related to cost, ctrl, autodiff
15      untangel a few ALLOW_ECCO_OPTIMIZATION
16    
17    checkpoint56c_post
18    o OBCS as control variables
19      - update ctrl_ad_diff.list, obcs_ad_diff.list
20      - remove balance of obcs controls from default
21      - fix index bug nobcs in ctrl_init
22      - fix dummy fields filen in ctrl_pack
23      - add dummy weights for obcs
24    o lsopt: comment out fort.94 output
25    o optim:
26      - remove unnecessary header files
27      - adjusted namelists
28      - add xerbla.F to Makefile
29    o exf:
30      - multiple modifications of exf_check_range
31      - unit change in exf_init_runoff from [m/year] to [m/s]
32    o mdsio:
33      - i/o-vector change debugLevel from debLevA to debLevB
34    
35    checkpoint56b_post
36    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
37      is called from DO_THE_MODEL_IO
38      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
39      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
40      - clean up PTRACERS_WRITE_TIMEAVE a little
41    o add another verification experiment that tests both the cfc-pkg and
42      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
43      reactive tendencies treated inline with regular timestepping
44    o testreport previously did a lousy job of comparing small numbers, so
45      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
46      implemented in the little c-progam tmp_cmpnum.c which is embedded in
47      testreport.
48    o ptracers_monitor: bug fix for MPI
49    
50    checkpoint56a_post
51    o GCHEM: finish reorganizating the package
52      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
53        (introduces another 3D-array for each passive tracer, but only if
54        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
55        gchemTendency is not needed because the timestep is done separately)
56      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
57      - GCHEM is now---more or less cleanly---separate from PTRACERS
58      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
59        so clear to me how that should be done in a general way.
60    o CFC: improve formatting of output in CFC_ATMOS
61    o PTRACERS:
62      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
63        that ALL experiments with ptracers enable can be checked. This makes
64        GCHEM_MONITOR obsolete.
65      - include a runtime parameter PTRACERS_monitorFreq that defaults to
66        monitorFreq
67      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
68    o add PTRACERS (PTR0[1-5]) to testreport output
69    o exf_check_range:
70      * default changed to .TRUE.
71      * will check values for niter0 if debLevA, every timestep if debLevB
72      * STOP in exf_check_range if 'out of range'
73      * range chosen generous to allow for potential extema
74      TBD: a version with stricter range
75           permitted range would be runtime parameters
76    o GMredi:
77      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
78      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
79      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
80    o GCHEM:
81      - move call to GCHEM_FORCING_SEP, so that it is now called before
82        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
83      - introduced a useGCHEM runtime flag and applied it everywhere.
84      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
85        this flag is now only visible within GCHEM-pkg routines.
86      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
87        be replaced by a 3D array that is computed before thermodynamics; for
88        this, the tracer ID iTracer had to be included into the parameter list
89        of ptracers_forcing
90      - set up forward_step to call gchem_forcing, that will replace
91        gchem_forcing_int in ptracers_forcing
92      - cleaning up
93    o small cleaning of exch2: remove files that are also in eesupp/src
94    
95    checkpoint56
96    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
97    o mnc: cleanup "full" files--fixes out-of-memory problem
98    o ECCO-GODAE
99      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
100      * fully merged and updated from SIO code
101        windstress sign change affects
102        - exf_inscal_[u/v]stress
103        - sign of xx_tau[u/v] adjustments
104        - signs in cost_scat
105      * ctrl_get_gen: avoid update of tau[u/v] for first few days
106      * natl_box_adjoint updated and compressed
107      * 2-level checkpoint switch added
108        (tested in EXP. 1 of natl_box_adjoint)
109      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
110    o SVD
111      * first complete, non-hacked version for SVD calculations
112      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
113        performed via direct access files admtlm_vector.it????
114        (via ctrl_[un]pack)
115      * optimcycle is used for ARPACK iteration counter
116        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
117      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
118        and add linear transforms where necessary
119      * controls are initial/final SST, SSS (can be extended; need to check
120        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
121    o mdsio: filename info to both stderr, stdout
122    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
123      from sign change
124    
125    checkpoint55j_post
126    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
127      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
128    o add consistent build directories and .cvsignore files to verification
129    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
130    o make all subroutines 30 or less characters in length for certain older
131      compilers to work (a thorough search only turns up two routines in
132      pkg/ptracers)
133    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
134      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
135    
136    checkpoint55i_post
137    o change arrays for total vertical diffusivity (2.D if explicit,
138      3.D if implicit) ; each ptracer uses its own background value.
139    o added mnc/NetCDF output capability to ocn_compon_interf
140      - added bits to verification/cpl_aim+ocn so that it can run on
141        ITRDA and other clusters without the mpirun "-wd" option
142    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
143      configuration
144    o give MNC the ability to create additional files rather than
145      exceeding a specified file size limit "MNC_MAX_FILESIZE"
146      - the default is just less than 2GB which is a practical limit
147        on many systems
148    o Compute the non-local term using either KPP vertical diffusivity (=default)
149       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
150    
151    checkpoint55h_post
152    o add verification test "vermix"
153    o remove all the *_ioinc flags and replace with the single global
154      outputTypesInclusive flag
155    o allow to set a vertical profile of vertical diffusivity for T & S
156    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
157    o useMNC moved from data.mnc to data.pkg
158    
159    checkpoint55g_post
160    o Renaming carbon AD experiments to comply with testreport conventions
161    o Updating adjoint of Held-Suarez hs94.1x64x5
162    o Fixing directives for non-ECCO forward_step, after ECCO directives
163      have been fixed to avoid recomp. of do_oceanic_phys
164      Works well for global_ocean.90x40x15,
165      but recomp. issue remains for carbon
166    o Updating adjoint output for natl_box_adjoint after
167      pkg/ecco has been modified (see taga c55d_post)
168    
169    checkpoint55f_post
170    o rename to timeave_init_fixed
171    
172    checkpoint55e_post
173    o some delicate re-shuffle of store directives to avoid one
174      extra call of do_oceanic_physics
175      affects ecco_the_main_loop.F, do_oceanic_physics.F
176      checkpoint_lev1_directives.h
177    o NB: this may break global_ocean adjoint temporarily,
178      but it is clear how to fix it. Will do later, need this now.
179    
180    checkpoint55d_post
181    o ECCO specific cost function terms (up-to-date with 1x1 runs)
182    o ecco_cost_weights is modified to 1x1 runs
183    o modifs to allow observations to be read in as
184      single file or yearly files
185    o enable to read exf forcing fields as either
186      single file or yearly files (flag useExfYearlyFields)
187    checkpoint55d_pre
188    
189    o switch between 2-level and 3-level checkpointing
190    o add ability of MNC to write local and "partial" (eg. 2D slices where
191      the full 3D field is never actually stored) arrays to NetCDF files
192      with the correct (that is, the complete multi-dimensional) set of
193      array indicies
194      - used in mom_vecinv() to write the diagFreq output
195      - tested (demonstrated) in verification/aim.5l_cs
196    o further mnc-ification
197      - add verification/lab_sea to the list with mnc setups
198      - fix undefined mnc v-names in cd_code
199      - add kpp to mnc output (both snapshot and timeave)
200    o non-hydrostatic code
201      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
202        in calc_gw.F
203      - defaults to viscAh
204      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
205        friction or Leith) in non-hydrostatic mode, as long as there is
206        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
207    o pkg/cost
208      extend simple cost functions to treat time mean quantities
209      (T,U,V) via cost_accumulate_state from cost_tile
210    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
211        be 2 times larger than the minimum size the advection scheme requires.
212        now get a perfect conservation of salt in advect_cs test-exp (updated)
213    o GGL90 (Gaspar's TKE mixed layer)
214      - add horizontal diffusion of TKE, requires exchanges in
215        do_fields_blocking_exchanges, horizontal diffusivity is zero by
216        default. In OPA there is no horizontal diffusion of TKE but the
217        mixing coefficients are computed from a horizontal average of TKE of
218        6 points or so. I think that diffusion has a little more physical
219        justification.
220      - clean up ggl90_calc in the hope of reducing memory usage (this hope
221        was in vain)
222      - mask tke-variable in ggl90_init
223    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
224    o fix biharmonic diffusion on CS-grid.
225    o more obcs stuff
226      - added obcs_external_fields_load as an alternative to the EXF-pkg option
227        for reading boundary values. This routine is called from
228        obcs_prescribe_read
229      - updated obcs_check
230      - changed sponge layer relaxation parameter units for days to seconds
231      - turned off sponge layer by default
232      - changed argument list of OBCS_CALC to myTime+deltaTclock
233      - fixed about 35 bugs in obcs_external_fields_load
234    
235    checkpoint55c_post
236    o obcs stuff
237      - new runtime flags useOBCSprescribe, useOBCSbalance
238      - re-arranged obcs_calc
239      - moved exf_getobcs to obcs_prescibe_read
240        obcs_prescibe_read is called after ORLANSKI stuff
241        and independent of it (executable can contain all).
242      - updated obcs_check
243      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
244        These may be necessary only if tangential velocities are
245        prescribed at OB, not sure, needs testing.
246    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
247      which simplifies the calls and passes the ifc check-bounds test
248    
249    checkpoint55b_post
250    o add a 2D scalar, Z location, exchange_2 routine.
251    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
252      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
253      affects advect_cs results (for the wrong reason): update output.txt
254    o use a more standard discretization for biharmonic viscosity ;
255     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
256      affects results of dome set-up: update output.txt
257    o fix gad_advection.F (CubedSphere part), back to version 1.23
258    o fix bug in mom_vi_del2uv.F (CubedSphere part).
259    
260    checkpoint55a_post
261    o merged code to
262      * prescribe/read time-dependent open boundaries
263        (works in conjunction with exf, cal)
264      * sponge layer code for open boundaries
265      * each boundary N/S/E/W now has its own CPP option
266        (healthy for the adjoint)
267    
268    checkpoint55
269    o up-to-date adjoint of previous breaks
270      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
271      - global_ocean_ebm: adjoint still needs fix (TLM ok)
272      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
273      - carbon: * remove tr1-related adjoint verification
274                * add ptracer as control variable
275    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
276      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
277    
278    checkpoint54f_post
279    o in verification/carbin/ remove experiment related to
280      ALLOW_PASSIVE_TRACER (array tr1 etc)
281      code_ad/ input_ad/ results_ad
282    
283    o add two new packages
284      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
285        + subject to optimization (memory)
286      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
287        + subject to reordering (many GOTOs in the original code)
288        + so far opps is called for every (i,j) point, and then operates in
289          the vertical; one may want to reorder the scheme in order operate in
290          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
291          fields)
292    o overhaul of IO so that we now have flags for MDSIO and/or MNC
293      - all verification tests compile and run with linux_ia32_g77
294      - defaults are compatible with current input files--nothing
295        should change if you were not previously using MNC
296      - MNC output has been added in numerous places (eg. timeave)
297        but there are still a few writes not yet do-able with MNC
298        (this is in progress)
299      - flags now allow for either/or/both use of MDSIO and MNC and
300        documentation will soon follow
301      - numerous small formatting cleanups for ProTeX
302    o add version info (via BUILD_INFO.h) to MNC and stdout
303    
304    checkpoint54e_post
305    o add two new packages
306      - pp81 (Packanowski and Philander, 1981), Richardson number and
307        stratification dependent mixing
308      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
309      - these scheme operate in a similar manner as KPP (without ghat, of
310        course), however there is only one diffusivity that is used for both
311        temperature and salinity (and passive tracers)ç
312    o add offline package
313    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
314      provided by Stephanie Dutkiewicz
315    o genmake2: add ability to search for C compilers and cleanup test output
316      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
317    
318    checkpoint54d_post
319    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
320    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
321      leading to additional shift by 5 days each year of integration
322       (i.e. leading to considerable offset over the years)
323    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
324    o start with no AB and no initial filtering (staggerTimeStep):
325      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
326    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
327      (external loading & cpl import/export stay in forward_step.F)
328    o update coupling interface to work with new staggerTimeStep
329    o change MDSIO ptracers_pickup.
330    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
331    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
332    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
333    
334    checkpoint54c_post
335    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
336      this affects (truncation error) output.txt of test-exp:
337       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
338    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
339    o change Qnet to always be the net heat flux, (+upward).
340      affects (truncation error) output of natl_box exp.: updated
341    o define the max number of passive tracers in PTRACERS_SIZE.h
342    o start to test mnc routinely in exp0
343    o add sea-ice loading (sIceLoad) as a new forcing field.
344    
345    checkpoint54b_post
346    o add testreport "-j JOBS" option for parallel builds (tested and pretty
347       impressive on Altix and Opteron systems)
348    o diagnostics can now write NetCDF files through the mnc package
349    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
350    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
351    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
352      affects (truncation error) output of lab_sea & natl_box exp.: updated
353    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
354    
355    checkpoint54a_post
356    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
357    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
358    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
359    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
360      + internal_wave (shift in writing cg2d_ini_res)
361    checkpoint54a_pre
362    
363    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
364      - modified verification/lab_sea and natl_box_adjoint accordingly
365    
366    checkpoint54
367    checkpoint53g_post
368    o prepare splitting of thermodynamics: store convect.counter in common block
369    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
370      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
371    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
372    o new parameter "nShapS": allow to treat differently S from T (nShapT)
373    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
374    o restore adjointability
375    
376    checkpoint53f_post
377    o modifications that affect AIM experiment results (update output.txt):
378      - no advection of S at top interface Nr (pkg/generic_advdiff)
379      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
380    o AIM pkg:
381      - include stability function into surf.Flux derivative relative to Tsurf
382      - calculate clear-sky radiation & surface temp. change (for diagnostics)
383    
384    checkpoint53e_post
385    o merged cylindrical coord configuration
386    o added rotating_tank experiment
387    checkpoint53e_pre
388    
389    checkpoint53d_post
390    o faulks upgraded: re-generate output.txt that have changed:
391       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
392    o Added Bryan and Lewis, 1979, vertical diffusivity profile
393    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
394    o added Sadourny discretization of Coriolis
395      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
396      - re-enabled use of omega3 (useAbsVorticity)
397    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
398      vector-invariant equations
399      - note: does *NOT* yet use same variable visc. for no-slip BC's.
400    o recoded the lateral boundary conditions for non-hydrostatic w, this time
401      hopefully without new bugs
402      - still to do: biharmonic friction for non-hydrostatic w
403    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
404    o regenerated output for global_ocean_ebm (using -ieee)
405    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
406      of mom_common/
407      - simple re-arrangement of instructions within computing loop
408    checkpoint53d_pre
409    
410    checkpoint53c_post
411    o new version of coupler for AIM+thSIce and Ocean models
412     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
413     - land: change Evaporation of snow
414     - aim with thSIce: fix bug in snow-precip.
415    o changes to calc_gw.F
416     - bug fix for w^2 term near the bottom boundary
417     - (hopefully) improve the lateral slip boundary condtions for use with
418        partial/looped cells
419      - because the bug fix changes two verification experiments anyway (exp5
420        and plume on slope), change the lateral boundary condition from half slip
421        to the value of no_slip_sides
422    o ebm package wasnt quite up to the parallel task. Fixed that.
423    o Adjoint of EBM package + verification
424      * TLM OK
425      * ADM not sufficient accuracy yet (needs further testing)
426    
427    checkpoint53b_post
428    o Commiting new energy balance model to repository
429      * package is pkg/ebm
430      * verif. is verification/global_ocean_ebm
431      * references are in ebm_driver.F
432    C      * X. Wang, P. Stone and J. Marotzke, 1999:
433    C        Global thermohaline circulation. Part I:
434    C        Sensitivity to atmospheric moisture transport.
435    C        J. Climate 12(1), 71-82
436    C      * X. Wang, P. Stone and J. Marotzke, 1999:
437    C        Global thermohaline circulation. Part II:
438    C        Sensitivity with interactive transport.
439    C        J. Climate 12(1), 83-91
440    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
441    C        Destabilization of the thermohaline circulation
442    C        by atmospheric eddy transports.
443    C        J. Climate 7(12), 1870-1882
444    o Will need long integration testing.
445    checkpoint53b_pre
446    
447    o created pkg/mom_common in preparation for variable viscosity code
448    o renamed and split ini_mnc_io
449    o pkg/land: only liquid water can diffuse or run-off
450    o AIM using land: soil wetness availability account for snow
451    o added printMapIncludesZeros to EEPARMS namelist
452    
453    checkpoint53a_post
454    o restore TAMC compatiility for exf_constants.h
455      (no usage of _d in .h)
456    o Additional storing in KPP in an attempt to fix
457      TAMC problem with adjoint of KPP code.
458      (no success...)
459      Identical code works fine with TAF.
460    o Fixed verification/natl_box_adjoint experiments.
461      Initial conditions for Experiments 4 and 5 are now
462      set to "SEAICE_initialHEFF=0", which is more reasonable,
463      and hence gives results closer to that of Experiment 2.
464      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
465    
466    checkpoint53
467    o stable checkpoint with up to date adjoint
468      TLM tests only run for 1st grdchk at the moment. Its unclear if
469      this is a code problem or a problem with resetting code for g_
470      variables that is being autogenerated wrong.
471      Otherwise:
472       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
473       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
474         are both still in chaos following their security messes.
475    
476    checkpoint52n_post
477    o various build (mostly genmake2) changes including:
478      - ability to build/run more easily within Cygwin and MacOS X
479      - more complicated Makefiles with a stronger dependence on Gnu Make
480    o pkg/seaice modifications
481      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
482        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
483        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
484      - changed proxy for geostrophic velocity and updated
485        verification/lab_sea/results/* accordingly
486      - removed ADI dynamic solver from pkg/seaice
487      - replaced all occurrences of 1/CSTICE or 1/CSUICE
488        they caused a segmentation fault under certain circumstances
489      - removed unused field WATR
490    o bug fix in exf-package:
491      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
492         now reflect that.
493    o small fixes in the cal-package:
494      - set reference date to first of January for the 'model'-calendar
495      - failing of cal_CheckDate in cal_FullDate now actually results in a
496        warning
497    o small modifications in exf-package to increase flexibility:
498      - change climtempfreeze from a constant to a runtime parameter that
499        is specified in data.exf_clim (default = -1.9)
500      - introduce runtime parameter windstressmax (default = 2.0) that is
501        specified in data.exf
502    o fix in pkg/thsice:
503      - update Evap (Tsf changes) to be consistent with Latent heat flux
504      - maintain snow precipitation unchanged (even if Tsf >=0).
505     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
506    
507    checkpoint52m_post
508    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
509      this does not change any of the results, because myIter=0 in swfrac always
510      lead to jwtype=2 (the default anyway), but the call makes little sense
511      as a default
512    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
513    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
514      atmospheric model (AIM) to use it ; add a "slab ocean" component.
515    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
516    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
517    o extending useSingleCpuIO option to work with new exch2 I/O format
518      - old-style, missing-tile I/O is still accessible by defining CPP
519        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
520    o monitor package can write to NetCDF files and/or STDOUT
521    o fix re-definition bug in MNC_GRID_INIT_ALL()
522    o doc/api_reference added
523      - a framework for building an API Reference Manual using all
524        the "protex" comments embedded in the code
525      - see pkg/generic_advdiff, pkg/mnc for examples
526    o MNC:
527      - make myThid the last argument for all subroutines
528      - new default for the grid files: NO halos
529      - add useMNC and other run-time flags
530      - separate per-file-group handling of the unlimited dimension
531      - early initialization of MNC w/ flags read at the eeboot stage
532        and lookup tables set in initialize_fixed
533      - write all MNC output to a freshly-created directory
534    o thermodynamics sea-ice (thsice) is now tested with testreport.
535    o test exp. advect_cs: use the standard cs32 grid ; update output.
536    o Added functionality to grdchk:
537      pick global i,j,k position (or nearest wet) where to perform check.
538    
539    checkpoint52l_post
540    o new land formulation:
541      a) use ground enthalpy as prognostic variable to ensure exact
542         energy conservation.
543      b) account for water temperature and for latent heat of freezing
544         in all processes (rain, run-off, ground storage)
545      c) compute surface and ground temperature implicitly.
546    o aim_v23 modification for new land model:
547      a) Treat separately land / ocean / sea-ice surface fluxes
548         to allow implicit computation of land & sea-ice surface temp.
549      b) add snow precipitation.
550    checkpoint52l_pre
551    
552    o fix problem (when 1 tile is empty) in min/max monitor.
553    o fix bug in timeAve (u,vZetatave in common block)
554    o no restoring terms under ice for pkg/seaice
555    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
556    o bug fix for pkg/seaice pickups
557    o change MNC call locations and add coordinate attributes
558    o mask vorticity at the corner ; affects global_ocean.cs output
559    o fix ini_curvilinear_grid ; test CS experiments with mpi
560    o aim.5l_cs: modify sea-ice fraction input file ; update output
561    o exf: Adding simple range check routine for exf fields after read
562    
563    checkpoint52k_post
564    o removed top-level directory "diags"
565      - we migrated these functions to pkg/timeave a long time ago
566    o fixed bug introduced in pkg/monitor
567    o accuracy ctrlprec = 32 insuffient for gradient checks using
568      averaged fields (I/O via cost_averages)
569      -> use ctrl.h in active_file*.F to control I/O precision.
570    o paramter list of CALL ADTHE_MAIN_LOOP
571    o added initial do_the_model_io to ecco
572    o set all ...Freq to zero after cost_final
573      taveFreq, dumpFreq, pChkptFreq
574    o MAIN and ECCO differentiability restored
575    
576    checkpoint52j_post
577    o fix nchklev in tamc.h for global_ocean...
578    o Bringing flow and store directives up-to-date
579    o Really weird thing!
580      call do_the_model_io from the_main_loop with parameters
581      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
582      TAF places a faulty re-call of initialise_varia
583      after cost_final call which should not be there!
584    checkpoint52j_pre
585    
586    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
587      error messages
588    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
589    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
590      debug output
591    o modfied mdsio_writefield.F to handle non-global files under exch2
592    o update AIM Cubed-Sphere exp (aim.5l_cs):
593      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
594    o update AIM Equatorial Channel exp:
595      use standard aim_v23 pkg and change the SST fields to be more realistic.
596    o globalFile now works with exch2
597    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
598      mon_vort3.F to make exch2 friendly with >1 tile per cube face
599    o limit timeave output for hi-res integrations
600    
601    checkpoint52i_post
602    o removed CPP_EEOPTIONS.h from verification/*/code
603    o updated the tiling for global_ocean_pressure
604    checkpoint52i_pre
605    
606    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
607      the old pkg/aim).
608    
609    checkpoint52h_pre
610    o shortened offending lines in exch2_send_rx?.template
611    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
612    o genmake2: add build & execute test for NetCDF code
613    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
614      old grid files, moved CPP_EEMACROS.h to pkg/exch2
615    o added useSingleCPUIO flag to monitor.F and mon_out.F
616    o added temporary hack for sea-ice dynamics on the cube:
617      metric terms are ignored and it is assumed that
618      there is no sea-ice on cube faces 1, 2, 4, and 5.
619    
620    checkpoint52f_post
621    o added exch2 cube routines to pkg/exch2
622    o modified hs94.cs-32x32x5 to use it
623    o added new grid files to hs94.cs-32x32x5
624    checkpoint52f_pre
625    
626    checkpoint52e_post
627    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
628      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
629    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
630      to work with implicit vertical advection and AB ;
631    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
632    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
633     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
634    checkpoint52e_pre
635    
636    o fix bug in impldiff when Nr=1 or Nr=2.
637    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
638    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
639    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
640      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
641    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
642    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
643    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
644    
645    checkpoint52d_post
646    o re-tiled many expts to allow comparison in multi-processor mode
647      - updated output accordingly
648      - changed hs94.128x64x5 to use intial T from file rather than use the
649        random number generator
650    o add infrastructure in model routines for fizhi and gridalt packages
651    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
652    o changes to permit hi-res, cubed-sphere, configuration
653      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
654      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
655      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
656        of surface winds for the cube
657      (A verification experiment, based on global_ocean.cs32x15, but with
658       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
659       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
660       complete with example surface forcing files and matlab scripts to look
661       at the output and compare it with that of global_ocean.cs32x15.)
662    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
663       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
664       to conform to the common rule.
665    o check-in the first version of the coupler + interfaces for multi-components
666       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
667       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
668       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
669       - ocean and atmos. share the same horizontal grid (no interpolation).
670       - exchanges between component and coupler is done in forward_step
671    o new verification experiment, cpl_aim+ocn:
672       coupled ocean - AIM atmosphere on cs32 grid.
673    
674    checkpoint52d_pre
675    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
676    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
677    
678    checkpoint52c_post
679    o Fixing OPTIONS files for use of exf:
680      - ALLOW_ECCO not needed
681      - ECCO_CPPOPTIONS.h should not be included from
682        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
683        as has been the case in the past
684      - All cal/exf related options are currently set in
685        single header file. Should remain so until we
686        agree on a consistent new policy.
687    o Removed all CPP options for cal package.
688      cal has no more CPP options.
689    o modified STOREs in GAD_ADVECTION
690    o corrected key comp. for passkey
691    
692    checkpoint52b_post
693    o new version: "thsice" of thermodynamic sea-ice pkg:
694     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
695     - modify fluxes but do not change theta directly;
696     - light cleaning of bulk_force pkg (still needed with thsice).
697     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
698       + output_thsice.txt to test thsice & bulk_force pkgs.
699    o put back grid & coriolis monitor output.
700    checkpoint52b_pre
701    
702    o call "do_the_model_io" at the beginning (=> dump initial state)
703    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
704    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
705      (need info on NUMBER_OF_PTRACERS)
706    o missing PTRACERS headers in some routines
707    o default tamc.h in pkg/autodiff supposed to crash
708      to ensure proper customization
709    
710    checkpoint52a_post
711    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
712      - moved surfaceTendencyTice from pkg/seaice to main code
713      - subroutine FREEZE_SURFACE now limits only surface temperature
714        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
715        => new output.txt for global_ocean.cs32x15 & global_with_exf
716      - keep the old version of FREEZE for backward compatibility;
717        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
718      - corresponding modifs for TAF directives
719    o added surface flux output variables to TIMEAVE_STATVARS
720    o time-averaged output for pkg/ptracers
721    o fix problem with ECCO-related divided adjoint
722      snapshot file was missing some ad-variables,
723      but no warning issued by TAF
724    
725    checkpoint52a_pre
726    o some bug fixes for #undef REAL4_IS_SLOW
727    
728    checkpoint52 = ecco_c52_e35
729    o after testing adjoints of checkpoint51u_post
730    
731    checkpoint51u_post
732    o this is the post-merge tag of the ecco-branch
733      (needs another clean checkout and re-testing)
734    o various natl_box_adjoint configs and results
735      but no input fields
736    o obcs adjoint not yet merged!
737    o adding ECCO global 1x1 and 2x2 degree configs
738    o updated/extended some store directives for seaice
739    o pkg/ecco now containes ecco-specific part of cost function
740    o top level routines the_main_loop, forward_step
741      supersede those in model/src/
742      previous input data.cost now in data.ecco
743      (new namelist ecco_cost_nml)
744    o in ctrl/ cleaned some cross-dependencies and updated CPP options
745    
746    checkpoint51t_post
747    o this is the pre-merge tag of the ecco-branch
748    
749    checkpoint51s_post
750    o cleanup: removed various obsolete #define-s
751    o pkg/grdchk
752      - renamed 'ph-grd 3' to 'grad-res'
753      - merged from ecco-branch
754        (remaining bug fixes for obcs gradient checks)
755      - additional high-precision output for testreport
756        (grep for 'precision_grdchk_result')
757    
758    checkpoint51r_post
759    o cleaned up or removed CPP_OPTIONS.h files
760    o updated results for some of the tests to reflect the new
761      optfiles (-ieee: -O0 instead of -O3)
762    
763    checkpoint51q_post
764    o cd_code:
765      - moved cd_scheme.F -> cd_code_scheme.F
766      - separate read_checkpoint from cd_code_ini_vars.F
767      - separated cd_code part from write_checkpoint
768      - updated AD_SOURCE, generated .flow
769      - added CD_CODE_VARS.h to the_main_loop
770      - Moving cd_code specific store dir.s to pkg/cd_code
771    o ctrl package totally restructured
772      - pack/unpack now optional and decoupled from
773        xx_/adxx_ I/O
774      - ctrl_pack/unpack cleaned
775        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
776      - confined inclusion of AD_CONFIG.h to where necessary.
777    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
778    
779    checkpoint51p_post
780    o create initial cd_code package
781      - WARNING: the initialization of fields within packages
782        is broken because INI_FIELDS (where READ_CHECKPOINT is
783        called) is called *before* PACKAGES_INIT_VARIABLES.
784        This seems to be backwards since
785        1) its important to initially zero the entire field including
786           the "halo" region
787        2) zeroing needs to be done *before* reading pickup info
788           and the pickup call might or might not happen in any
789           particular run
790      - this needs an overhaul for R2
791    o cleanup verification/*/code/GMREDI_OPTIONS.h
792    o cleanup testreport
793    
794    checkpoint51o_post
795    o bringing AD-related verif's up to date with genmake2
796      - carbon/
797      - global_ocean.90x40x15/
798      - hs.94.1x64x5/
799      - (front_relax/ )
800    o (more) consistent directory structure for AD-related verif.'s
801    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
802    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
803    o bug fix in find_alpha.F for MDJWF:
804      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
805        change rho -> rho-rhoConst
806      - replace call find_rho to find_rhonum
807    o initialisation of rFlx extended to full array (required by TAF)
808      and shifted to thermodynamics
809    o removed PTRACERS.h in ptracers routine
810    o added surfacetendencyPtr to S/R parameter list pracers_forcing
811    o Correcting initialisations for fVerU, fVerV.
812    o helping TAF to recognize dependency on kUp for
813      fVerU, fVerV
814    o Replacing delZ by delR in pkg/ctrl/
815    checkpoint51o_pre
816    
817    o undid all of cp51 pending some cleanups and discussion
818    o added the [#include "AD_CONFIG.h"] statement to all files that need
819       it for adjoint/tl #defines
820     o re-worked the build logic in genmake2 to support AD_CONFIG.h
821     o removed tools/genmake since it no longer works
822    
823    checkpoint51n_post
824    o modifications to make FREEZE flux visible to pkg/kpp
825      - moved surfaceTendencyTice from pkg/seaice to main code
826      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
827      - subroutine FREEZE now limits only surface temperature
828        (this means new output.txt for global_ocean.90x40x15,
829         global_ocean.cs32x15, and global_with_exf)
830    o added surface flux output variables to TIMEAVE_STATVARS
831    
832    checkpoint51n_pre
833    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
834    o added [#include "AD_CONFIG.h"] to all files that use the following
835      defines:
836      - ALLOW_ADJOINT_RUN
837      - ALLOW_TANGENTLINEAR_RUN
838      - ALLOW_ECCO_OPTIMIZATION
839    
840    checkpoint51m_post
841    o incorporating changes to get TAMC/TAF working in genmake2
842      - added new TAMC/TAF targets to the Makefile
843      - various cleanups related to package handling
844      - these changes should have no impact on the forward model
845    
846    checkpoint51l_post
847    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
848     - faster algorithm for cal_addtime.F
849     - higher precision arithmetic, where needed
850     - pkg/exf *startdate variables changed from calendar date to
851       model integration time
852    
853    checkpoint51l_pre
854    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
855    o enable to apply restoring on S & T only in a latitude band.
856    o update output (external_forcing_surf modif. change truncation errors)
857       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
858    
859    checkpoint51k_post
860    o change default to: useNHMTerms=.FALSE.
861     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
862       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
863     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
864        exp1, ideal_2D_oce
865     - change data file of oceanic exp (leave the results unchanged for now)
866       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
867    o set gravitySign automatically according to the vertical coordinate used
868      (and change sign: back to "logical" value: +1 when R increases downward)
869    o added an include barrier to the default CPP_OPTIONS.h and
870      removed the #include "PACKAGES_CONFIG.h" from it
871    o fix a bug in mom_fluxform (from chk51j_post)
872    
873    checkpoint51j_post
874    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
875    o adjusted some flow directives (dynamics, thermodynamics)
876    o added cubed-sphere case to test cost function
877    o heckpoint_lev?_directives.h now include
878      pkg-specific directives, whenever those are enabled.
879    o Moving pkg-specific flow directives to corresponding pkg
880      Moving pkg-specific differentiation list to corresponding pkg
881      Moving pkg-specific checkpoint-lev storing to corresponding pkg
882      ---> conventions are
883           - pkg_ad.flow
884           - pkg_ad_diff.list
885           - pkg_ad_check_lev?_dir.h
886    
887    checkpoint51i_post
888    o merge of the branch-genmake2
889      - knowingly breaks the older genmake
890      - automatic generation of all ALLOW_${PKG_NAME} defines
891      - new testreport supersedes older testscript
892    o large number of package inclusion and header cleanups
893    checkpoint51i_pre
894    
895    o new output for adjoin of global ocean vector invariant
896    o fix for checkpoint of thermodynamic seaice and bulk_force
897    o Steph gchem various cleanups
898    
899    checkpoint 51h_pre
900    o fixed some single quotes
901    o modify gchem pkg to be more versatile
902    o modifications to clean up dic pkg
903    o add pkg/cfc
904    
905    checkpoint51g_post
906    o provide links for ARPACK and ADM*TLM
907    o start removing verification/vero/
908    o update AD-related stuff
909      (in particular some IF-statements in model/src/ routines)
910    o adding to verification/global_ocean.90x40x15/ adjoint of
911      vector invariant setup
912    
913    checkpoint51f_post
914    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
915    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
916      of tracer Green's fucntions for ocean inversion project.
917    
918    checkpoint51f_pre
919    o Added on-the-fly spatial interpolation capability
920        "USE_EXF_INTERPOLATION" to pkg/exf.
921      - This is a temporary Cartesian-grid hack until
922        the super-duper ESMF coupler becomes available.
923      - See verification/global_with_exf/README for usage example.
924      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
925        flags and modified pkg/seaice accordingly.
926    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
927        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
928        non-local transport term.
929    
930    checkpoint51e_post
931    o pkg/mom_vecinv:
932      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
933      - add time-ave diagnostic of vorticity advection.
934    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
935    o atmospheric geopotential: - include water vapor effect;
936                                - use p^kappa in p* scaling.
937    o land pkg: read initial state from files.
938    o AIM : add stratospheric drag in the upper level
939    
940    checkpoint51d_post
941    o change function ILNBLNK (=> last non-blank char.) to return zero
942      (instead of the string length) when the string. char is empty
943    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
944    o modif's to restore TAMC compatibility
945      - avoid "_d" constructs in PARAMETER declarations
946      - avoid interrupting lines by comment lines
947    o Use cluster local disks for purely local I/O
948      vs. globally visible disks needed for ctrl stuff
949      (merged from ecco-branch)
950      - new active_file_loc... and mdsio_..._loc routines
951      - affected packages: autodiff, ctrl, grdchk, mdsio
952    
953    checkpoint51c_post
954    o introducing integer flag debugLevel
955      - debLevZero: suppress all output
956      - debLevA: standard
957      - debLevB: equivalent to current debugMode=.TRUE.
958    o introducing pathname variable mdsioLocalDir for mdsio
959      that can be specified at runtime
960      (relevant for cluster I/O to local disk)
961    `
962    >>>checkpoint51b_post
963    adjoint of ptracers
964    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
965    o extended state in checkpoint_lev?, etc.
966    o alternative ctrl/cost with tr1 or ptracer
967    o new comlev1_bibj_ptracers
968    o new ptracers.flow
969    o made ptracers_forcing same as external_forcing_s
970    o added verification for adjoint with ptracers
971      - adm. grdchk fail so far
972      - tlm. grdchk OK
973      - checked tapelev/comlev recomputations: OK
974    <<<checkpoint51b_pre
975    
976    checkpoint51a_post
977    o added code for biogeochemistry package
978      - new pkgs: dic, gchem
979      - new subroutine in ptracers
980    o modify code for biogeo packages
981      - in model/src and pkg/ptracers
982    
983    checkpoint51
984    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
985      - autodiff, ctrl, exf, grdchk, seaice
986      kept separate packages
987      - cost, ecco, obcs
988    o updating verification/internal_wave, verification/lab_sea
989      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
990    
991    checkpoint50i_post
992    o Preparing next differentiable checkpoint and sync
993      of MAIN vs. ecco-branch
994      - 1st step: this one is differentiable
995      - 2nd step: next(! not this) checkpoint will have updated packages
996                  from ecco-branch)
997    
998    checkpoint50h_post
999    o new package "land": provide surface BC for AIM.
1000    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1001    o AIM: use true log-P extrapolation for near surface temp (= as in
1002        F.Molteni paper) ; update aim.5l_cs output.
1003    o New variable in PARM03 for more flexible pickups
1004    o somewhat cleaned package initialisation sequence for
1005      ctrl/ cost/ ecco/ in packages_... routines
1006    
1007    checkpoint50g_post
1008    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1009      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1010      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1011        made the default because of faster convergence than ADI
1012    
1013    checkpoint50f_post
1014    o exf totally restructured
1015      - replaced all exf_set_ routines by one generic exf_set_gen.F
1016        and made sure it's still differentiable
1017      - split exf_getffields.F into new exf_bulkformulae.F
1018      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1019      - updated adjoint/makefile and relevant verif. accordingly
1020    
1021    checkpoint50f_pre
1022     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1023          + change Evap over land. (update aim.5l_cs output)
1024     o added missing .cvsignores and made uniform across expts
1025     o changed configuration of tidal_basin_2d expt
1026     o added pkg/debug functions for tracing code in fatal crashes
1027     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1028     o new fn in pkg/monitor to stop model if solution grows too big
1029     o removed lots of single quotes from comments
1030    
1031    checkpoint50e_post
1032    o make KPP work with PTRACERS
1033     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1034       nearly a copy of kpp_transport_s
1035     - there is no analogue to SurfaceTendencyS, so I have to use
1036       gPtr(of the surface layer) instead
1037    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1038    checkpoint50e_pre
1039    
1040    checkpoint50d_post
1041    o change kpp output from multiple-record state files to single-record state
1042      files analogous to write_state.F
1043    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1044      analogous to the cg2d-related output.
1045    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1046      so that writing to internal file fn (with length 512) fails.
1047    checkpoint50d_pre
1048    
1049    checkpoint50c_post
1050    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1051    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1052    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1053    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1054    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1055    
1056    checkpoint50c_pre
1057    Merging from release1_p13:
1058    o bug fix for pkg/seaice dynamic solver
1059    o Added SEAICE_initialHEFF to pkg/seaice
1060    
1061    checkpoint50b_post
1062    o store u*,v* in gU,V instead of in guNm1,gvNm1
1063    o in order to put the momForcing out of the Adams-Bashforth:
1064      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1065      to timestep.F
1066    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1067    o re-generate output for highly sensitive test-exp:
1068       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1069    
1070    checkpoint50b_pre
1071    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1072    o corrected CPP option mismatch in exf_Bulk... functions for case
1073      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1074    
1075    checkpoint50a_post
1076    o Bug fix for merging between c50 and KPP.
1077      ikey was passed from thermodynamics to kpp_calc via
1078      common block rather than being recomputed in kpp_calc,
1079      in contradiction with new key itdkey.
1080      New key ikppkey created, and tamc.h headers updated.
1081    
1082    checkpoint50
1083    - 2nd step of merge with ecco-branch:
1084      merge changes in ecco-branch back into main trunk
1085    - bug fix in find_alpha
1086    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1087    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1088    - merged some sliced AD support routines
1089    
1090    checkpoint49
1091    merged from ecco-branch:
1092    o exf:
1093      - Enable initialisation of forcing fields to constant
1094        (runtime) values.
1095      - in exf_getffields.F
1096        Reduce i-/j-loop to interior domain, discarding overlaps.
1097        That also fixes wrong TAF-key computations for key_1, key_2
1098        with bulf formulae.
1099      - exf_init.F modify #ifdef for exf_init_evap
1100      - exf_getffieldrec.F, ctrl_getrec.F
1101        The following INT-usages are not safe:
1102          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1103          fldcount = int(fldsecs/fldperiod) + 1
1104        and were modified.
1105    o autodiff: checkpoint_lev...
1106      - updated storing for bulk formulae (some arrays were missing)
1107      - added state for seaice package
1108      - synchronized with main branch
1109    o DIVA:
1110      Modif.s in
1111      - the_main_loop.F
1112      - the_model_main.F
1113      and added cost_final_restore.F cost_final_store.F
1114      o With these changes, it is possible to fully separate
1115        the first forward run to compute the cost function (mdthe_main_loop)
1116        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1117        into separate model executions.
1118        This enables better tuning of DIVA to given queue sizes.
1119      o Loss of cost function value in consecutive DIVA runs is
1120        fixed by storing to 'costfinal' file.
1121      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1122        beginning/end of adjoint integration is accounted for.
1123      The current changes apply to TAF-1.4.26.
1124      TAF has one remaining bug, requiring one manual change
1125      (see MITgcm manual).
1126    o cal: synchronized between MAIN and ecco-branch
1127    
1128    checkpoint48i_post
1129    o Changes to restore differentiability of code w.r.t. previous tag
1130      (mostly adding new routines to make list and replacing
1131      pressure by totPhiHyd).
1132    o Updated and merged grdchk package
1133      - has both ADM and TLM checks
1134      - works for single- and multi-proc.
1135      - output cleaned
1136      - worked successfully for parallel DIVA
1137    o genmake:
1138      - Adding -platform=SP4
1139      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1140    o Modif. for DIVA:
1141      ctrl_unpack should not be called in intermediate DIVA interval.
1142      (similar thing would apply for active files such as
1143      tbar, sbar, psbar, which should not be reinitialised;
1144      only relevant for ecco-branch)
1145    
1146    checkpoint48h_post
1147    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1148    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1149    o Added SEAICE_initialHEFF to pkg/seaice
1150    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1151    
1152    checkpoint48g_post
1153    --- EOS:
1154    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1155      store total Potential in totPhyHyd for diagnostics & EOS.
1156    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1157    --- Pressure/geopotential gradient:
1158    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1159    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1160      ( changes results of global_ocean_pressure )
1161    o NLFS + z-coord.: add eta*Rho' contribution.
1162    o accurate phiHyd when using interface-W at the middle between 2 centers
1163     ( changes results of ideal_2D_oce )
1164    o includes r* 2nd term in potential gradient.
1165    
1166    checkpoint48f_post
1167    Merging from release1_p12:
1168    o Modifications for using pkg/exf with pkg/seaice
1169      - improved description of the various forcing configurations
1170      - added basic radiation bulk formulae to pkg/exf
1171      - units/sign fix for evap computation in exf_getffields.F
1172      - updated verification/global_with_exf/results/output.txt
1173    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1174      (SBO) core products, including oceanic mass, center-of-mass,
1175      angular, and bottom pressure (see pkg/sbo/README.sbo).
1176    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1177      to avoid negative values in shallow regions.
1178      - updated verification/natl_box/results/output.txt
1179      - updated verification/lab_sea/results/output.txt
1180    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1181    o Added useSingleCpuIO option (see PARAMS.h).
1182    o Updated useSingleCpuIO option in mdsio_writefield.F to
1183      work with multi-field files, e.g., for single-file pickup.
1184    o pkg/seaice:
1185      - bug fix in growth.F: QNET for no shortwave case
1186      - added HeffFile for specifying initial sea-ice thickness
1187      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1188    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1189      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1190    o pkg/seaice:
1191      - adjoint-friendly modifications
1192      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1193    
1194    checkpoint48e_post
1195    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1196    o dynamics: change definition of computational domain & adapt mom_fluxform
1197      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1198    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1199        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1200        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1201        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1202        inverted_barometer solid-body.cs-32x32x1
1203      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1204    
1205    checkpoint48d_post
1206    o in preparation for r*:
1207     a) use pre-computed gradient of hydrostatic potential:
1208        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1209     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1210        => affects results of glob_oce_pressure (different truncation error)  
1211      update output.txt of ideal_2D_oce & global_ocean_pressure
1212    
1213    checkpoint48d_pre
1214    o in preparation for r*:
1215      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1216      pass the 2 comp. of the grad. as arguments to momentum S/R.
1217      but for the moment, only used if it does not change the results.
1218    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1219    
1220    checkpoint48c_post
1221    Modifications in treatment of initial flux forcing controls
1222    to avoid extra storing of flux fields.
1223    
1224    checkpoint48c_pre
1225    o Added tidal_basin_2d experiment (currently 1D!)
1226    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1227    
1228    checkpoint48b_post
1229    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1230     (modification to pressure gradient not yet implemented)
1231    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1232      (for U & V) that are used for vertical advection of momentum.
1233    
1234    checkpoint48a_post
1235    o In preparation for r*, use temp. array to compute vertical transport
1236       in flux-form momentum pkg. => change results of few test-exp.
1237      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1238                        lab_sea, natl_box & plume_on_slope
1239    
1240    checkpoint48
1241    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1242    
1243    checkpoint47j_post
1244    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1245    o moved adexch from forward_step to addummy_in_stepping
1246    o added exch in ctrl_map_...
1247    o aveFreq.=0. at end of cost_final to avoid overwrite in
1248      reverse checkpointing loop
1249    o Yet more changes in gmredi:
1250      * adgmredi_calc_tensor
1251        avoiding all recomputation of gmredi_slope_limit
1252      * adgmredi_x/y/rtransport
1253        added flag for excessive storing to avoid recomp. of
1254        u/v/rtans, dTdx/y/z
1255        -> this is not really necessary and very memory-consuming
1256      * adgmredi_slope_psi:
1257        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1258      * gmredi_slope_limit
1259        re-activated full calculation of taperfct for case 'ac02'
1260    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1261    
1262    checkpoint47i_post
1263    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1264    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1265      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1266    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1267    o gmredi: fix few bugs.
1268    
1269    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1270    This will be a good checkpoint to plug into the ecco-branch.
1271    o few modif.'s to get latest version adjointed
1272      (mainly kick out code in ini_linear_phisurf)
1273    o modif's to run adjoint with exactConserv
1274    o case GM_BOLUS_ADVEC should be cleaned
1275      S/R gmredi_slope_psi should be cleaned
1276    o verification/carbon now has exactConserv=.TRUE.
1277    
1278    checkpoint47g_post
1279    o time-average AIM output: becomes independent from statvars time-average
1280      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1281    o After TAF bug fix:
1282      Tested adjoint of gmredi package.
1283      Tests were done with checkpoint47 rather than with latest
1284      checkpoint47f_post since the latter is broken for the adjoint
1285      verification/carbon/ contains both ADM and TLM gradient checks.
1286    Here they are, before they get changed/lost/stolen.
1287    Mostly modif.'s to fix numerical sensitivities.
1288    Gradient checks OK for
1289    - GM_taper_scheme:
1290      * clipping
1291      * ac02
1292      * linear
1293      * glw91
1294      * dm95
1295      * ldd97
1296    - GMREDI_OPTIONS:
1297      * GM_VISBECK_VARIABLE_K
1298      * GM_NON_UNITY_DIAGONAL
1299      * GM_EXTRA_DIAGONAL
1300      * GM_BOLUS_ADVEC
1301    in conjunction with data.gmredi parameters to be checked in
1302    in a few minutes under verification/carbon/code/
1303    
1304    checkpoint47f_post
1305    Merging from release1_p10:
1306    o modifications for using pkg/exf with pkg/seaice
1307      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1308        and SEAICE_EXTERNAL_FLUXES
1309      - pkg/exf CPP options EXF_READ_EVAP and
1310        EXF_NO_BULK_COMPUTATIONS
1311      - usage examples are Experiments 8 and 9 in
1312        verification/lab_sea/README
1313      - verification/lab_sea default experiment now uses
1314        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1315    
1316    checkpoint47e_post
1317    o created a tag prior to creating a branch
1318    
1319    checkpoint47d_post
1320    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1321      at the bottom boundary had an erroneous half slip boundary condition
1322    o added bottom drag and no slip boundary condition capabilities to
1323      oceanic pressure coordinates code
1324    o added new verification experiment global_ocean_pressure, this experiment is
1325      also described in the tutorial section of the manual
1326    checkpoint47d_pre
1327    
1328    checkpoint47c_post
1329    o Added a verification experiment for a global cubed-sphere ocean run
1330      -  verification/global_ocean.cubed32x32x30
1331      -  uses pkg/therm_seaice and pkg/bulk_forcing
1332    
1333    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1334    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1335      when using P-coordinate; only implemented for atmospheric config.
1336    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1337      NOTES: requires option NONLIN_FRSURF to be "#define".
1338    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1339    
1340    checkpoint47b_post
1341    Merging from release1_p9:
1342    o pkg/seaice
1343      - removed GOTO's and added taf directives
1344      - double precision constants to reduce the g77 (Linux)
1345        to F77 (SGI) differences reported in release1_p8
1346    o tools/genmake
1347      - added SGI options
1348    o verification/testscript
1349      - updated to that of checkpoint47a_post
1350    o verification/global_ocean.90x40x15/input/eedata
1351      - modified for SGI f77 compatibility
1352    o verification/lab_sea
1353      - added description of sea-ice model
1354      - added missing matlab routines
1355      - added test of thermodynamics parallelization
1356    
1357    checkpoint47a_post
1358    o new pkg: aim_v23
1359     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1360       for now, keep the same surface forcing as before.
1361     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1362     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1363     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1364    o add diagnostic of surface correction term in monitor output
1365    
1366    o bulk_force and therm_seaice
1367    - Two packages:  bulk_force (Bulk forcing)
1368      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1369    - Earlier integration from Stephaine Dutkiewicz
1370      and Patrick Heimbach.
1371    - Two ifdef statements for compile time,
1372       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1373    
1374    checkpoint47
1375    differentiable version of checkpoint46n_post
1376    o bug fix in quasihydrostaticterms
1377    o * "clean" adjoint code (in terms of extensive recomputations)
1378        can now be obtained for all GMREDI options (i.e. for
1379        - GM_VISBECK_VARIABLE_K
1380        - GM_NON_UNITY_DIAGONAL
1381        - GM_EXTRA_DIAGONAL
1382        - GM_BOLUS_ADVEC )
1383      * However, wrong gradient check problem remains unsolved.
1384      * New CPP options have been introduced for different
1385        tapering schemes
1386    o external_fields_load now part of differentiation list
1387    o pressure needs multiple storing;
1388      would be nice to have store_pressure at beginning or
1389      end of forward_step, e.g. by having phiHyd global (5-dim.)
1390      (NB: pressure is needed for certain cases in find_rho,
1391      which is also invoked through convective_adjustment).
1392    o recomputations in find_rho for cases
1393     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1394    o #define ATMOSPHERIC_LOADING should be differentiable
1395    o ini_forcing shifted to begining of initialise_varia
1396    o Incorporating QNVS line search routines into MITgcm
1397      (this is separate code, and therefore not under pkg)
1398      lsopt/, optim/
1399    o Updated verification/carbon/
1400      - #define GM_VISBECK_VARIABLE_K
1401      - GM_taper_scheme    = 'ldd97'    
1402    
1403    checkpoint46n_post
1404    Merging from release1_p8:
1405    o verification/natl_box:
1406      updating new external_fields_load routine
1407    o New package: pkg/seaice
1408      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1409      The sea-ice code is based on Hibler (1979-1980).
1410      Two sea-ice dynamic solvers, ADI and LSR, are included.
1411      In addition to computing prognostic sea-ice variables and diagnosing
1412      the forcing/external data fields that drive the ocean model,
1413      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1414      The implied surface heat flux is then stored in variable
1415      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1416      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1417      non-local transport term.  Because this call precedes model
1418      thermodynamics, temperature under sea-ice may not be "exactly" at
1419      the freezing point by the time theta is dumped or time-averaged.
1420      N.B.: fairly large differences in accuracy occur across
1421            different platforms/compilers; comparison between
1422            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1423            generated output gives:
1424       T           S           U           V
1425      C D M    c        m  s        m  s        m  s        m  s
1426      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1427      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1428      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1429    
1430      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1431    o GAD:
1432      - generated new common blocks to account for call of
1433        same gad routines with differing traceridentities
1434        (needed to modify tracerIdentity indices in GAD.h)
1435      - generated separate common blocks for case useCubedSphereExchange
1436        (Department of Futurology)
1437      - parameter lists to gmredi_?transport: added tracerIdentity
1438      - added new key indices to tamc.h
1439    o external_fields_load:
1440      - added this routine to TAF list
1441      - needed to make some common blocks global and additional storing
1442        along the same lines as exf package (checkpoint_lev?_directives.h)
1443    o exf:
1444      updated external forcing package
1445      - bug fixes carried over from ecco-branch
1446        (missing OBCS_OPTIONS.h in two routines)
1447      - enable easy to use "no forcing".
1448      - added exf I/O for atmospheric loading
1449      - added exf I/O for runoff data
1450      - transfered scaling between exf <-> MITgcm to exf namelist
1451    o Adding new verification experiment global_with_exf.
1452      This verification experiment is almost identical to the
1453      global_ocean.90x40x15 experiment, except that it uses
1454      the exf (and cal) package instead of the
1455      external_fields_load routine (cf README file).
1456    
1457    checkpoint46m_post
1458    o modified testscript to return -- when there are no lines of "%MON" output
1459    o added new flag "quasiHydrostatic" for QH mode
1460      and new routine quasihydrostaticterms()
1461    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1462      New routine: mom_u_coriolis_nh()
1463    o fixed sign of non-hydrostatic metric terms in u and v equations.
1464      Depend on correct sign of gravitySign.
1465    o added work.pc* to .cvsignore in aim directories using ifc
1466    o introduced flag for controllin non-hydrostatic metric terms
1467    o removed gravitySign from PARM04
1468    o switched to g77/ifc from pgf77 in aim experiments
1469    
1470    checkpoint46l_post
1471    o made convective adjustment work with pressure coordinates:
1472     - changed the direction of k-loop in convective_adjustment.F for the
1473       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1474     - adjusted the reference pressure k-index in convective_adjustment.F
1475     - adjusted the convection condition in convect.F (in analogy to
1476       calc_ivdc.F)
1477     - convective_adjustment no longer computes anything on the halos
1478     - removed the warnings about negative salinity from find_rho.F and
1479       find_alpha.F; instead the new routine look_for_neg_salinity, called
1480       at the beginning of find_rho, find_alpha, and find_beta, does a
1481       check of the entire slice, if CPP-option
1482       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1483    checkpoint46l_pre
1484    
1485    checkpoint46k_post
1486    o fixed the verification/global_ocean.90x40x15 experiment:
1487     - new bathymetry (the world according to A., JMC, and M.)
1488     - new initial fields and forcing fields (*.bin files)
1489     - new POLY3.COEFFS (for the next release one should switch to a full
1490       equation of state: JMD95P or MDJWF)
1491     - fixed several errors and redundancies in the data file
1492     - experiment uses looped cells
1493     - added matlab directory with diagnostic scripts for plotting of output
1494    
1495    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1496     - read AIM physics parameters from a file (data.aimphys)
1497     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1498    
1499    checkpoint46j_post
1500    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1501    o move wVel computation at the end of the time step, in S/R integr_continuity
1502    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1503    o update timeave pkg for wVel diagnostic.
1504    checkpoint46j_pre
1505    
1506    checkpoint46i_post
1507    o Clean up AIM package (and keep the results unchanged):
1508      include CPP_OPTION and use IMPLICT NONE in all routines ;
1509      declare all the variables _RL ; use _d 0 for all numerical constants.
1510      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1511    
1512    checkpoint46h_post
1513    o cleaned up the use of rhoNil and rhoConst.
1514      - rhoNil should only appear in the LINEAR equation of state, everywhere
1515        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1516        and the dynamical equations are all divided by rhoConst
1517    o introduced new parameter rhoConstFresh, a reference density of fresh
1518      water, to remove the fresh water flux's dependence on rhoNil. The default
1519      value is 999.8 kg/m^3
1520    o cleanup up external_forcing.F and external_forcing_surf.F
1521      - can now be used by both OCEANIC and OCEANICP
1522    checkpoint46h_pre
1523    
1524     Added code to convert surface volume flux (fresh water) into
1525     a mass flux when using P coordinates in the ocean (OCEANICP).
1526     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1527    
1528    checkpoint46g_post
1529    o Include a new diagnostic variable phiHydLow for the ocean model
1530      - in z-coordinates, it is the bottom pressure anomaly
1531      - in p-coordinates, it is the sea surface elevation
1532      - in both cases, these variable have global drift, reflecting the mass
1533        drift in z-coordinates and the volume drift in p-coordinates
1534      - included time averaging for phiHydLow, be aware of the drift!
1535    o depth-dependent computation of Bo_surf for pressure coordinates
1536      in the ocean (buoyancyRelation='OCEANICP')
1537      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1538        Theta, Salinity, and Pressure in the parameter list. This routine is
1539        presently contained in find_rho.F. This routine does not give the
1540        correct density for 'POLY3', which would be a z-dependent reference
1541        density.
1542    o cleaned up find_rho
1543      - removed obsolete 'eqn' from the parameter list.
1544    o added two new verification experiments: gop and goz
1545      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1546    checkpoint46g_pre
1547    
1548    checkpoint46f_post
1549    o Enable tangent linear (forward mode) gradient checks:
1550      - extended active file handling to g_... files
1551      - added TANGENT_SIMULATION to theSimulationMode
1552      - extended grdchk package accordingly
1553    o added tangent linear setup in verification/carbon/code_ftl
1554    o added adjoint setup in verification/front_relax/code_ad
1555    
1556    checkpoint46e_post
1557    o Added new equation of state -> MDJWF
1558      - EOS of McDougall et al., 2002, JAOT, submitted
1559      - caveat: the equation of state is only valid for a smaller (more
1560        realistic?) range of values than JMD95P/Z and UNESCO
1561      - added masks to the calculation of pressure in store_pressure
1562      - added more check values for density in check_eos (ini_eos.F), some of
1563        the old check values are out of the range of the MDJWF-eos, so don't
1564        expect perfect matches for those
1565    checkpoint46e_pre
1566    
1567    checkpoint46d_post
1568    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1569      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1570      case of pressure coordinates. eosType='JMD95Z' in
1571      combination with buoyancyRelation='OCEANICP' now causes an error.
1572    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1573      in find_alpha/beta.
1574    checkpoint46d_pre
1575    
1576    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1577      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1578    
1579    checkpoint46c_post
1580    o Changes necessary for ocean in p-coordinates
1581     -  Added new buoyancy relation = 'OCEANICP'
1582     -  Added new parameters = gravitySign (this used to be contained inside
1583        the factor dRdZ which I added when we first switched to R coordinates).
1584     X GM/Redi is not compatible (yet)
1585     X bottom drag and no-slip need to be debugged.
1586    checkpoint46c_pre
1587    
1588    checkpoint46b_post
1589    o Added new equation of state -> JMD95Z and JMD95P
1590      - EOS of Jackett and McDougall, 1995, JAOT
1591      - moved all EOS parameters into EOS.h
1592      - new routines ini_eos.F, store_pressure.F
1593    o Added UNESCO EOS, but not recommended because it requires
1594      in-situ temperature (see JMD95)
1595    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1596      unesco.f to be used with POLY3
1597    checkpoint46b_pre
1598    
1599    checkpoint46a_post
1600    o Added (atmospheric) pressure loading
1601      - new field in FFIELDS.h, etc...
1602      - new cpp flag ATMOSPHERIC_LOADING
1603    o Changed hFacC to _hFacC in calc_phi_hyd.F
1604    o Added SHORTWAVE_HEATING to some files for consistency
1605    checkpoint46a_pre
1606    
1607    checkpoint46
1608    further merges from release1_p5
1609    o new ctrl package
1610      - adopted from ECCO environment to enable optimization
1611      - added Eliassen Palm fluxes to controls
1612    o added Eliassen Palm flux controls to gradient check package
1613    o cost package
1614      - Compatible with new ctrl package
1615      - added Eliassen Palm cost hooks
1616      - modif's of existing cost functions
1617    o Adjoint-related bug fixes in kpp:
1618      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1619      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1620    o autodiff package
1621      - flow directives:
1622        + new for S/R do_the_model_io
1623        + enhanced for S/R checkpoint
1624        + new gmredi.flow
1625      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1626        disable adcommon.h/g_common.h by default.
1627      - fixed problem for adjoint of global_max
1628    o modified verification/carbon/
1629    o New setup for adjoint of global_ocean
1630    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1631    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1632    o incorporated hooks for sponge layer code (external_forcing.F)
1633    
1634    checkpoint45d_post
1635    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1636    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1637      (affects plume_on_slope "cg2d" output)
1638    o add new parameter deltaTfreesurf for free-surface time stepping
1639    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1640    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1641    o change phiMin in exp1 (to agree with documentation)
1642    o add new flags:
1643     - T,S forcing inside/outside Adams-Bashforth
1644     - turn off temp,salt advection and/or forcing
1645     - for each tracer, define internal flag for multiDimAdvection & A-B
1646    o monitor: change definition of KE to check conservation of Energy
1647    
1648    checkpoint45c_post
1649    o Removed f90 comments ("!")
1650    o Modified initialisations to enable exf package for MITgcm
1651      (without invoking ECCO_PACKAGE).
1652    o modifications to gradient check package (Martin Losch)
1653      - enable centered differences
1654      - modified format of standard output
1655    
1656    checkpoint45b_post
1657    o cleaned exchange calls in cg2d
1658    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1659    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1660      to configure barotropic setup (Martin Losch)
1661    o moved some initialisations within bi,bj loop in dynamics
1662      (TAF flow dependency)
1663    o in initialise_varia, moved call packages_init_variables
1664      before convective_adjustment_init
1665      (corresponding adjustment of TAF tape initialisation).
1666    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1667    
1668    checkpoint45a_post
1669    o compute Rho over the whole domain (extend iMin,jMin indices)
1670    o specific exchange for X-slice domain (case Ny=1)
1671    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1672    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1673    
1674    checkpoint44h_post = checkpoint45
1675    o Fix to restore differentiability:
1676      place at which packages_init_variables is called in
1677      initialise_varia is crucial for reverse control flow.
1678    o modifications in GMRedi to enable stable adjoint
1679      (corresponding modif's in thermodynamics, dynamics)
1680    o added missing hook for sponge layer code in external_forcing
1681    o modified test cost functions
1682    o storing in gad_advection (plus removal of write(0,*)!
1683    o missing headers TR1.h added in convective_adjustment routines
1684    o errorMessageUnit set non-equal zero in eeboot
1685      (conflict on some platforms, e.g. IBM SP3)
1686    o modified carbon verif.
1687    
1688    checkpoint44h_pre
1689    o vertical grid option: allow to put the Interface at the middle between
1690      2 cell-centers ; replace delZ in pkg/kpp by drF.
1691    o GM Advective form: Tracers are advected using the residual transport (=
1692      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1693    
1694    checkpoint44g_post
1695    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1696      results) ; ifdef missing in thermodynamics.F
1697    
1698    checkpoint44f_pre,checkpoint44f_post
1699    o added PTRACERS package
1700      This allows an arbitrary number of passive tracers to be integrated
1701      forward simultaneously with the dynamicaly model.
1702      + Implemented so far:
1703        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1704        - I/O and checkpointing
1705        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1706      + Not implemented so far:
1707        - KPP
1708        - OBCS
1709      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1710        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1711        line in data.pkg.
1712      + This package is disabled by default since it increases storage.
1713    
1714    
1715    o testscript: added -cleanup option
1716    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1717                 b) enable to filter 2D fields.
1718    
1719    checkpoint44e_pre,post
1720    o re-wrote convective adjustment to use pre-calculated weights
1721      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1722      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1723      Original calls to convect() still in place.
1724    
1725    chkpt44d_pre,post
1726    o added missing EXCLUDE_MONITOR flags
1727    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1728      (incompatible typ in MIN/MAX expressions caused problems
1729      on IBM SP3)
1730    o in genmake added variable MAKEDEPEND
1731      plus resetting for case SunOS
1732    o added timer_stats.c routine for IBM SP3
1733    o removed variables in dynamics
1734    !!! I forgot to create tag chkpt44d_pre !!!
1735    !!! But chkpt44d_pre = chkpt44c_post    !!!
1736    
1737    o real fresh water flux implemented with non-linear free-surface.
1738    
1739    chkpt44c_pre,post
1740    o few fix (mask in shap_s2, EmPmR in external_field_load,
1741      USE_NATURAL_BCS in solve_for_P);
1742    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1743    
1744    checkpoint44b_pre/_post
1745    o merge of relevant stuff from the ecco-branch:
1746      - genmake: removed $S64 overwrite for case SunOS
1747      - pkg/exf: update and corrections for field swapping and obcs
1748      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1749                  harmonized between ECCO and MITgcm
1750      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1751                      updated checkpointing_lev... lists for obcs
1752      - model/src: minor changes in forward_step, plot_field
1753                   added directive for divided adjoint in the_main_loop
1754      - pkg/mdsio: added mdsio_gl_slice
1755    
1756    o check parameters & config (chkpt44a_pre,post)
1757    o OBC and NonLin_FrSurf.
1758    
1759    checkpoint44
1760    o fix bug in mom_vi_del2uv
1761    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1762    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1763    o update AIM experiments (NCEP input files)
1764    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1765    o added some stuff for AD
1766    
1767    checkpoint43
1768    o added two new advection tests
1769    o added global 4x4 degree ocean test
1770    o added test of H&S94 with free surface on cube
1771    o some final mods for gradient check, adjoint,...
1772    
1773    checkpoint42
1774      Fixed AD-related problems:
1775    o Store directives up-to-date with re-arranged Adams-Bashforth
1776      (mainly thermodynamics.F)
1777    o New store directives for multi-dim. advection schemes
1778      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1779      * new common block and key passkey
1780      (mainly gad_advection.F)
1781    o Modified store directives for split of dynamics/thermodynamics
1782      for the case ALLOW_KPP
1783    o Cleaned argument list for timestep_tracer.F
1784    
1785    checkpoint41
1786    o re-formatted/added comments in prologues of key subroutines
1787      to work with protex
1788    
1789    checkpoint40
1790    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1791    o added FLT (floats) package from Arne along with demo. experiment
1792    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1793      implementation of forward-in-time forcing terms
1794    o more mods for non-linear free-surface including new variable
1795    o modified multi-dim method to work on cube
1796    o bug fix in KPP (from DM)
1797    
1798    checkpoint40pre9
1799    o added DST advection schemes
1800    o fix MPI bug on SGI's
1801    o modifications for non-linear free-surface
1802    o fixed conditionals for fixed flow/passive tracer only mode
1803    o added tension/strain form of stress tensor
1804    o changes to commenting of arguments for TAF/TAMC
1805    o added/updated many matlab scripts
1806    o added multi-dimensional advection method for tracers
1807      
1808    checkpoint40pre8
1809    o new package rw/
1810      Added method for dumping intermediate local arrays:
1811      mdsio_writetile - same as mdsio_writefield except works from inside
1812                        bi,bj loop
1813      mdsio_writelocal - same as mdsio_writetile except works for local
1814                         arrays
1815      write_local_r? - higher-level wrapper for mdsio_writelocal
1816      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1817      Example given at end of mom_vecinv.F that dumps some local arrays.
1818    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1819      control flux-form versus vector invariant code.
1820      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1821      or genmake -DISABLE ...
1822    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1823      (additional storing is now needed for case vecinv;
1824      currently nothing implemented to switch this storing off
1825      in case fluxform is used since no CPP flag available).
1826    
1827    checkpoint40pre7
1828    o bug fix in dynamics.F
1829      calc_viscosity called before k=1,Nr loop.
1830    o added some #ifdef's ALLOW_PASSIVE_TRACER
1831    o cleaned initialisations in ctrl_map_ini
1832      related to TAF
1833    
1834    checkpoint40pre6
1835    o split dynamics into thermodynamics & dynamics
1836    o corresponding split of calc_diffusivity into
1837      calc_diffusivity, calc_viscosity
1838      (kpp_calc_diff, kpp_calc_visc).
1839    o Added diffkr, kapgm to control variables
1840    o bug fix in gmredi_slope_limit for ldd97
1841    
1842    checkpoint40pre5
1843    o proper initialization of Adams-Bashforth time stepping
1844      + uses forward step for very first step of model (iter=0)
1845    o re-generated *all* output since almost all output is modified by this
1846      change (sorry but we've been putting this one off for about 2 years)
1847      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1848        *not* regenerated since they are already out of date and I don't
1849        want to create the impression that they are suddenly working.
1850    o removed KAP stuff for DEC's
1851    o modified/added many .cvsignore files in */code and */input
1852    o added new expt "solid-body.cs-32x32x1"
1853      + this uses an alternative form of ini_curvilinear_grid.F which
1854        is not necessarily any better than the current one...
1855    
1856    checkpoint40pre4
1857    o added re-initialisations of utrans,vtrans,rtrans in
1858      calc_common_factors which are crucial for TAF.
1859    o extended iMin,jMin range for calc_common_factors,
1860      calc_diffusivity
1861    o added option ALLOW_PASSIVE_TRACER
1862    o a few minor updates and fixes
1863    
1864    checkpoint40pre3
1865    o created calc_gtr1.F for gad package
1866    o split the_main_loop and re-introduced forward_step
1867    o some recomputations of nIter0 for TAMC
1868    
1869    checkpoint40pre2
1870    o Updated to latest branch of AJA, JMC
1871    o Added gradient check package
1872    o Added routines for passive tracer handling
1873    o Added carbon sequestration sensitivity experiment
1874    
1875    checkpoint39
1876     o Modifications and fixes to support TAMC
1877       (mainly missing or wrong directives)
1878     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1879       in addummy_in_stepping
1880     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1881     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1882     o Included following packages:
1883       cal: calendar
1884       exf: external forcing
1885       ecco: essential routines to control use of cal, exf
1886             (NB: this is not the full ECCO environment)
1887     o disabled some packages by default in genmake
1888    
1889  checkpoint38  checkpoint38
1890   o see notes_c37_adj.txt   o see notes_c37_adj.txt
1891   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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