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revision 1.70 by jmc, Sat Apr 6 01:36:25 2002 UTC revision 1.410 by heimbach, Fri Dec 10 20:17:38 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint57a_post
7    o this set of changes restores TAMC compatibility
8      tested for global_ocean.90x40x15 adjoint on trough
9      (what a pain)
10    
11    checkpoint57a_pre
12    o some modifs in tools/build_options for sunos
13    o call ctrl_pack for ctrl at end for optimcycle=0
14    
15    checkpoint57
16    o add horizontal bi-harmonic viscosity for vertical velocity
17      - new parameter viscA4W (defaults to viscA4)
18      - affects only non-hydrostatic code
19      - to be done: no-slip lateral boundary conditions
20    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
21    o implement Implicit Vertical advection for pTracers
22    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
23      (implemented also for implicit vertical diffusion & advection)
24    o OBCS: extend application of tracer open boundary conditions
25      to a strip beyond the boundary of width Olx/Oly
26    o add call monitor to TAF set of required calls (flow directives)
27      and include in natl_box_adjoint
28    o untangle a few ifdefs related to cost, ctrl, autodiff
29      untangel a few ALLOW_ECCO_OPTIMIZATION
30    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
31      (theta2, salt2 in ecco_cost_weights)
32    
33    checkpoint56c_post
34    o OBCS as control variables
35      - update ctrl_ad_diff.list, obcs_ad_diff.list
36      - remove balance of obcs controls from default
37      - fix index bug nobcs in ctrl_init
38      - fix dummy fields filen in ctrl_pack
39      - add dummy weights for obcs
40    o lsopt: comment out fort.94 output
41    o optim:
42      - remove unnecessary header files
43      - adjusted namelists
44      - add xerbla.F to Makefile
45    o exf:
46      - multiple modifications of exf_check_range
47      - unit change in exf_init_runoff from [m/year] to [m/s]
48    o mdsio:
49      - i/o-vector change debugLevel from debLevA to debLevB
50    
51    checkpoint56b_post
52    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
53      is called from DO_THE_MODEL_IO
54      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
55      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
56      - clean up PTRACERS_WRITE_TIMEAVE a little
57    o add another verification experiment that tests both the cfc-pkg and
58      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
59      reactive tendencies treated inline with regular timestepping
60    o testreport previously did a lousy job of comparing small numbers, so
61      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
62      implemented in the little c-progam tmp_cmpnum.c which is embedded in
63      testreport.
64    o ptracers_monitor: bug fix for MPI
65    
66    checkpoint56a_post
67    o GCHEM: finish reorganizating the package
68      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
69        (introduces another 3D-array for each passive tracer, but only if
70        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
71        gchemTendency is not needed because the timestep is done separately)
72      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
73      - GCHEM is now---more or less cleanly---separate from PTRACERS
74      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
75        so clear to me how that should be done in a general way.
76    o CFC: improve formatting of output in CFC_ATMOS
77    o PTRACERS:
78      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
79        that ALL experiments with ptracers enable can be checked. This makes
80        GCHEM_MONITOR obsolete.
81      - include a runtime parameter PTRACERS_monitorFreq that defaults to
82        monitorFreq
83      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
84    o add PTRACERS (PTR0[1-5]) to testreport output
85    o exf_check_range:
86      * default changed to .TRUE.
87      * will check values for niter0 if debLevA, every timestep if debLevB
88      * STOP in exf_check_range if 'out of range'
89      * range chosen generous to allow for potential extema
90      TBD: a version with stricter range
91           permitted range would be runtime parameters
92    o GMredi:
93      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
94      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
95      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
96    o GCHEM:
97      - move call to GCHEM_FORCING_SEP, so that it is now called before
98        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
99      - introduced a useGCHEM runtime flag and applied it everywhere.
100      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
101        this flag is now only visible within GCHEM-pkg routines.
102      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
103        be replaced by a 3D array that is computed before thermodynamics; for
104        this, the tracer ID iTracer had to be included into the parameter list
105        of ptracers_forcing
106      - set up forward_step to call gchem_forcing, that will replace
107        gchem_forcing_int in ptracers_forcing
108      - cleaning up
109    o small cleaning of exch2: remove files that are also in eesupp/src
110    
111    checkpoint56
112    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
113    o mnc: cleanup "full" files--fixes out-of-memory problem
114    o ECCO-GODAE
115      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
116      * fully merged and updated from SIO code
117        windstress sign change affects
118        - exf_inscal_[u/v]stress
119        - sign of xx_tau[u/v] adjustments
120        - signs in cost_scat
121      * ctrl_get_gen: avoid update of tau[u/v] for first few days
122      * natl_box_adjoint updated and compressed
123      * 2-level checkpoint switch added
124        (tested in EXP. 1 of natl_box_adjoint)
125      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
126    o SVD
127      * first complete, non-hacked version for SVD calculations
128      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
129        performed via direct access files admtlm_vector.it????
130        (via ctrl_[un]pack)
131      * optimcycle is used for ARPACK iteration counter
132        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
133      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
134        and add linear transforms where necessary
135      * controls are initial/final SST, SSS (can be extended; need to check
136        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
137    o mdsio: filename info to both stderr, stdout
138    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
139      from sign change
140    
141    checkpoint55j_post
142    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
143      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
144    o add consistent build directories and .cvsignore files to verification
145    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
146    o make all subroutines 30 or less characters in length for certain older
147      compilers to work (a thorough search only turns up two routines in
148      pkg/ptracers)
149    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
150      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
151    
152    checkpoint55i_post
153    o change arrays for total vertical diffusivity (2.D if explicit,
154      3.D if implicit) ; each ptracer uses its own background value.
155    o added mnc/NetCDF output capability to ocn_compon_interf
156      - added bits to verification/cpl_aim+ocn so that it can run on
157        ITRDA and other clusters without the mpirun "-wd" option
158    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
159      configuration
160    o give MNC the ability to create additional files rather than
161      exceeding a specified file size limit "MNC_MAX_FILESIZE"
162      - the default is just less than 2GB which is a practical limit
163        on many systems
164    o Compute the non-local term using either KPP vertical diffusivity (=default)
165       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
166    
167    checkpoint55h_post
168    o add verification test "vermix"
169    o remove all the *_ioinc flags and replace with the single global
170      outputTypesInclusive flag
171    o allow to set a vertical profile of vertical diffusivity for T & S
172    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
173    o useMNC moved from data.mnc to data.pkg
174    
175    checkpoint55g_post
176    o Renaming carbon AD experiments to comply with testreport conventions
177    o Updating adjoint of Held-Suarez hs94.1x64x5
178    o Fixing directives for non-ECCO forward_step, after ECCO directives
179      have been fixed to avoid recomp. of do_oceanic_phys
180      Works well for global_ocean.90x40x15,
181      but recomp. issue remains for carbon
182    o Updating adjoint output for natl_box_adjoint after
183      pkg/ecco has been modified (see taga c55d_post)
184    
185    checkpoint55f_post
186    o rename to timeave_init_fixed
187    
188    checkpoint55e_post
189    o some delicate re-shuffle of store directives to avoid one
190      extra call of do_oceanic_physics
191      affects ecco_the_main_loop.F, do_oceanic_physics.F
192      checkpoint_lev1_directives.h
193    o NB: this may break global_ocean adjoint temporarily,
194      but it is clear how to fix it. Will do later, need this now.
195    
196    checkpoint55d_post
197    o ECCO specific cost function terms (up-to-date with 1x1 runs)
198    o ecco_cost_weights is modified to 1x1 runs
199    o modifs to allow observations to be read in as
200      single file or yearly files
201    o enable to read exf forcing fields as either
202      single file or yearly files (flag useExfYearlyFields)
203    checkpoint55d_pre
204    
205    o switch between 2-level and 3-level checkpointing
206    o add ability of MNC to write local and "partial" (eg. 2D slices where
207      the full 3D field is never actually stored) arrays to NetCDF files
208      with the correct (that is, the complete multi-dimensional) set of
209      array indicies
210      - used in mom_vecinv() to write the diagFreq output
211      - tested (demonstrated) in verification/aim.5l_cs
212    o further mnc-ification
213      - add verification/lab_sea to the list with mnc setups
214      - fix undefined mnc v-names in cd_code
215      - add kpp to mnc output (both snapshot and timeave)
216    o non-hydrostatic code
217      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
218        in calc_gw.F
219      - defaults to viscAh
220      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
221        friction or Leith) in non-hydrostatic mode, as long as there is
222        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
223    o pkg/cost
224      extend simple cost functions to treat time mean quantities
225      (T,U,V) via cost_accumulate_state from cost_tile
226    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
227        be 2 times larger than the minimum size the advection scheme requires.
228        now get a perfect conservation of salt in advect_cs test-exp (updated)
229    o GGL90 (Gaspar's TKE mixed layer)
230      - add horizontal diffusion of TKE, requires exchanges in
231        do_fields_blocking_exchanges, horizontal diffusivity is zero by
232        default. In OPA there is no horizontal diffusion of TKE but the
233        mixing coefficients are computed from a horizontal average of TKE of
234        6 points or so. I think that diffusion has a little more physical
235        justification.
236      - clean up ggl90_calc in the hope of reducing memory usage (this hope
237        was in vain)
238      - mask tke-variable in ggl90_init
239    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
240    o fix biharmonic diffusion on CS-grid.
241    o more obcs stuff
242      - added obcs_external_fields_load as an alternative to the EXF-pkg option
243        for reading boundary values. This routine is called from
244        obcs_prescribe_read
245      - updated obcs_check
246      - changed sponge layer relaxation parameter units for days to seconds
247      - turned off sponge layer by default
248      - changed argument list of OBCS_CALC to myTime+deltaTclock
249      - fixed about 35 bugs in obcs_external_fields_load
250    
251    checkpoint55c_post
252    o obcs stuff
253      - new runtime flags useOBCSprescribe, useOBCSbalance
254      - re-arranged obcs_calc
255      - moved exf_getobcs to obcs_prescibe_read
256        obcs_prescibe_read is called after ORLANSKI stuff
257        and independent of it (executable can contain all).
258      - updated obcs_check
259      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
260        These may be necessary only if tangential velocities are
261        prescribed at OB, not sure, needs testing.
262    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
263      which simplifies the calls and passes the ifc check-bounds test
264    
265    checkpoint55b_post
266    o add a 2D scalar, Z location, exchange_2 routine.
267    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
268      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
269      affects advect_cs results (for the wrong reason): update output.txt
270    o use a more standard discretization for biharmonic viscosity ;
271     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
272      affects results of dome set-up: update output.txt
273    o fix gad_advection.F (CubedSphere part), back to version 1.23
274    o fix bug in mom_vi_del2uv.F (CubedSphere part).
275    
276    checkpoint55a_post
277    o merged code to
278      * prescribe/read time-dependent open boundaries
279        (works in conjunction with exf, cal)
280      * sponge layer code for open boundaries
281      * each boundary N/S/E/W now has its own CPP option
282        (healthy for the adjoint)
283    
284    checkpoint55
285    o up-to-date adjoint of previous breaks
286      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
287      - global_ocean_ebm: adjoint still needs fix (TLM ok)
288      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
289      - carbon: * remove tr1-related adjoint verification
290                * add ptracer as control variable
291    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
292      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
293    
294    checkpoint54f_post
295    o in verification/carbin/ remove experiment related to
296      ALLOW_PASSIVE_TRACER (array tr1 etc)
297      code_ad/ input_ad/ results_ad
298    
299    o add two new packages
300      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
301        + subject to optimization (memory)
302      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
303        + subject to reordering (many GOTOs in the original code)
304        + so far opps is called for every (i,j) point, and then operates in
305          the vertical; one may want to reorder the scheme in order operate in
306          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
307          fields)
308    o overhaul of IO so that we now have flags for MDSIO and/or MNC
309      - all verification tests compile and run with linux_ia32_g77
310      - defaults are compatible with current input files--nothing
311        should change if you were not previously using MNC
312      - MNC output has been added in numerous places (eg. timeave)
313        but there are still a few writes not yet do-able with MNC
314        (this is in progress)
315      - flags now allow for either/or/both use of MDSIO and MNC and
316        documentation will soon follow
317      - numerous small formatting cleanups for ProTeX
318    o add version info (via BUILD_INFO.h) to MNC and stdout
319    
320    checkpoint54e_post
321    o add two new packages
322      - pp81 (Packanowski and Philander, 1981), Richardson number and
323        stratification dependent mixing
324      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
325      - these scheme operate in a similar manner as KPP (without ghat, of
326        course), however there is only one diffusivity that is used for both
327        temperature and salinity (and passive tracers)ç
328    o add offline package
329    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
330      provided by Stephanie Dutkiewicz
331    o genmake2: add ability to search for C compilers and cleanup test output
332      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
333    
334    checkpoint54d_post
335    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
336    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
337      leading to additional shift by 5 days each year of integration
338       (i.e. leading to considerable offset over the years)
339    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
340    o start with no AB and no initial filtering (staggerTimeStep):
341      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
342    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
343      (external loading & cpl import/export stay in forward_step.F)
344    o update coupling interface to work with new staggerTimeStep
345    o change MDSIO ptracers_pickup.
346    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
347    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
348    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
349    
350    checkpoint54c_post
351    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
352      this affects (truncation error) output.txt of test-exp:
353       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
354    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
355    o change Qnet to always be the net heat flux, (+upward).
356      affects (truncation error) output of natl_box exp.: updated
357    o define the max number of passive tracers in PTRACERS_SIZE.h
358    o start to test mnc routinely in exp0
359    o add sea-ice loading (sIceLoad) as a new forcing field.
360    
361    checkpoint54b_post
362    o add testreport "-j JOBS" option for parallel builds (tested and pretty
363       impressive on Altix and Opteron systems)
364    o diagnostics can now write NetCDF files through the mnc package
365    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
366    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
367    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
368      affects (truncation error) output of lab_sea & natl_box exp.: updated
369    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
370    
371    checkpoint54a_post
372    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
373    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
374    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
375    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
376      + internal_wave (shift in writing cg2d_ini_res)
377    checkpoint54a_pre
378    
379    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
380      - modified verification/lab_sea and natl_box_adjoint accordingly
381    
382    checkpoint54
383    checkpoint53g_post
384    o prepare splitting of thermodynamics: store convect.counter in common block
385    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
386      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
387    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
388    o new parameter "nShapS": allow to treat differently S from T (nShapT)
389    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
390    o restore adjointability
391    
392    checkpoint53f_post
393    o modifications that affect AIM experiment results (update output.txt):
394      - no advection of S at top interface Nr (pkg/generic_advdiff)
395      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
396    o AIM pkg:
397      - include stability function into surf.Flux derivative relative to Tsurf
398      - calculate clear-sky radiation & surface temp. change (for diagnostics)
399    
400    checkpoint53e_post
401    o merged cylindrical coord configuration
402    o added rotating_tank experiment
403    checkpoint53e_pre
404    
405    checkpoint53d_post
406    o faulks upgraded: re-generate output.txt that have changed:
407       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
408    o Added Bryan and Lewis, 1979, vertical diffusivity profile
409    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
410    o added Sadourny discretization of Coriolis
411      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
412      - re-enabled use of omega3 (useAbsVorticity)
413    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
414      vector-invariant equations
415      - note: does *NOT* yet use same variable visc. for no-slip BC's.
416    o recoded the lateral boundary conditions for non-hydrostatic w, this time
417      hopefully without new bugs
418      - still to do: biharmonic friction for non-hydrostatic w
419    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
420    o regenerated output for global_ocean_ebm (using -ieee)
421    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
422      of mom_common/
423      - simple re-arrangement of instructions within computing loop
424    checkpoint53d_pre
425    
426    checkpoint53c_post
427    o new version of coupler for AIM+thSIce and Ocean models
428     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
429     - land: change Evaporation of snow
430     - aim with thSIce: fix bug in snow-precip.
431    o changes to calc_gw.F
432     - bug fix for w^2 term near the bottom boundary
433     - (hopefully) improve the lateral slip boundary condtions for use with
434        partial/looped cells
435      - because the bug fix changes two verification experiments anyway (exp5
436        and plume on slope), change the lateral boundary condition from half slip
437        to the value of no_slip_sides
438    o ebm package wasnt quite up to the parallel task. Fixed that.
439    o Adjoint of EBM package + verification
440      * TLM OK
441      * ADM not sufficient accuracy yet (needs further testing)
442    
443    checkpoint53b_post
444    o Commiting new energy balance model to repository
445      * package is pkg/ebm
446      * verif. is verification/global_ocean_ebm
447      * references are in ebm_driver.F
448    C      * X. Wang, P. Stone and J. Marotzke, 1999:
449    C        Global thermohaline circulation. Part I:
450    C        Sensitivity to atmospheric moisture transport.
451    C        J. Climate 12(1), 71-82
452    C      * X. Wang, P. Stone and J. Marotzke, 1999:
453    C        Global thermohaline circulation. Part II:
454    C        Sensitivity with interactive transport.
455    C        J. Climate 12(1), 83-91
456    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
457    C        Destabilization of the thermohaline circulation
458    C        by atmospheric eddy transports.
459    C        J. Climate 7(12), 1870-1882
460    o Will need long integration testing.
461    checkpoint53b_pre
462    
463    o created pkg/mom_common in preparation for variable viscosity code
464    o renamed and split ini_mnc_io
465    o pkg/land: only liquid water can diffuse or run-off
466    o AIM using land: soil wetness availability account for snow
467    o added printMapIncludesZeros to EEPARMS namelist
468    
469    checkpoint53a_post
470    o restore TAMC compatiility for exf_constants.h
471      (no usage of _d in .h)
472    o Additional storing in KPP in an attempt to fix
473      TAMC problem with adjoint of KPP code.
474      (no success...)
475      Identical code works fine with TAF.
476    o Fixed verification/natl_box_adjoint experiments.
477      Initial conditions for Experiments 4 and 5 are now
478      set to "SEAICE_initialHEFF=0", which is more reasonable,
479      and hence gives results closer to that of Experiment 2.
480      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
481    
482    checkpoint53
483    o stable checkpoint with up to date adjoint
484      TLM tests only run for 1st grdchk at the moment. Its unclear if
485      this is a code problem or a problem with resetting code for g_
486      variables that is being autogenerated wrong.
487      Otherwise:
488       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
489       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
490         are both still in chaos following their security messes.
491    
492    checkpoint52n_post
493    o various build (mostly genmake2) changes including:
494      - ability to build/run more easily within Cygwin and MacOS X
495      - more complicated Makefiles with a stronger dependence on Gnu Make
496    o pkg/seaice modifications
497      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
498        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
499        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
500      - changed proxy for geostrophic velocity and updated
501        verification/lab_sea/results/* accordingly
502      - removed ADI dynamic solver from pkg/seaice
503      - replaced all occurrences of 1/CSTICE or 1/CSUICE
504        they caused a segmentation fault under certain circumstances
505      - removed unused field WATR
506    o bug fix in exf-package:
507      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
508         now reflect that.
509    o small fixes in the cal-package:
510      - set reference date to first of January for the 'model'-calendar
511      - failing of cal_CheckDate in cal_FullDate now actually results in a
512        warning
513    o small modifications in exf-package to increase flexibility:
514      - change climtempfreeze from a constant to a runtime parameter that
515        is specified in data.exf_clim (default = -1.9)
516      - introduce runtime parameter windstressmax (default = 2.0) that is
517        specified in data.exf
518    o fix in pkg/thsice:
519      - update Evap (Tsf changes) to be consistent with Latent heat flux
520      - maintain snow precipitation unchanged (even if Tsf >=0).
521     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
522    
523    checkpoint52m_post
524    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
525      this does not change any of the results, because myIter=0 in swfrac always
526      lead to jwtype=2 (the default anyway), but the call makes little sense
527      as a default
528    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
529    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
530      atmospheric model (AIM) to use it ; add a "slab ocean" component.
531    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
532    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
533    o extending useSingleCpuIO option to work with new exch2 I/O format
534      - old-style, missing-tile I/O is still accessible by defining CPP
535        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
536    o monitor package can write to NetCDF files and/or STDOUT
537    o fix re-definition bug in MNC_GRID_INIT_ALL()
538    o doc/api_reference added
539      - a framework for building an API Reference Manual using all
540        the "protex" comments embedded in the code
541      - see pkg/generic_advdiff, pkg/mnc for examples
542    o MNC:
543      - make myThid the last argument for all subroutines
544      - new default for the grid files: NO halos
545      - add useMNC and other run-time flags
546      - separate per-file-group handling of the unlimited dimension
547      - early initialization of MNC w/ flags read at the eeboot stage
548        and lookup tables set in initialize_fixed
549      - write all MNC output to a freshly-created directory
550    o thermodynamics sea-ice (thsice) is now tested with testreport.
551    o test exp. advect_cs: use the standard cs32 grid ; update output.
552    o Added functionality to grdchk:
553      pick global i,j,k position (or nearest wet) where to perform check.
554    
555    checkpoint52l_post
556    o new land formulation:
557      a) use ground enthalpy as prognostic variable to ensure exact
558         energy conservation.
559      b) account for water temperature and for latent heat of freezing
560         in all processes (rain, run-off, ground storage)
561      c) compute surface and ground temperature implicitly.
562    o aim_v23 modification for new land model:
563      a) Treat separately land / ocean / sea-ice surface fluxes
564         to allow implicit computation of land & sea-ice surface temp.
565      b) add snow precipitation.
566    checkpoint52l_pre
567    
568    o fix problem (when 1 tile is empty) in min/max monitor.
569    o fix bug in timeAve (u,vZetatave in common block)
570    o no restoring terms under ice for pkg/seaice
571    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
572    o bug fix for pkg/seaice pickups
573    o change MNC call locations and add coordinate attributes
574    o mask vorticity at the corner ; affects global_ocean.cs output
575    o fix ini_curvilinear_grid ; test CS experiments with mpi
576    o aim.5l_cs: modify sea-ice fraction input file ; update output
577    o exf: Adding simple range check routine for exf fields after read
578    
579    checkpoint52k_post
580    o removed top-level directory "diags"
581      - we migrated these functions to pkg/timeave a long time ago
582    o fixed bug introduced in pkg/monitor
583    o accuracy ctrlprec = 32 insuffient for gradient checks using
584      averaged fields (I/O via cost_averages)
585      -> use ctrl.h in active_file*.F to control I/O precision.
586    o paramter list of CALL ADTHE_MAIN_LOOP
587    o added initial do_the_model_io to ecco
588    o set all ...Freq to zero after cost_final
589      taveFreq, dumpFreq, pChkptFreq
590    o MAIN and ECCO differentiability restored
591    
592    checkpoint52j_post
593    o fix nchklev in tamc.h for global_ocean...
594    o Bringing flow and store directives up-to-date
595    o Really weird thing!
596      call do_the_model_io from the_main_loop with parameters
597      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
598      TAF places a faulty re-call of initialise_varia
599      after cost_final call which should not be there!
600    checkpoint52j_pre
601    
602    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
603      error messages
604    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
605    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
606      debug output
607    o modfied mdsio_writefield.F to handle non-global files under exch2
608    o update AIM Cubed-Sphere exp (aim.5l_cs):
609      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
610    o update AIM Equatorial Channel exp:
611      use standard aim_v23 pkg and change the SST fields to be more realistic.
612    o globalFile now works with exch2
613    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
614      mon_vort3.F to make exch2 friendly with >1 tile per cube face
615    o limit timeave output for hi-res integrations
616    
617    checkpoint52i_post
618    o removed CPP_EEOPTIONS.h from verification/*/code
619    o updated the tiling for global_ocean_pressure
620    checkpoint52i_pre
621    
622    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
623      the old pkg/aim).
624    
625    checkpoint52h_pre
626    o shortened offending lines in exch2_send_rx?.template
627    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
628    o genmake2: add build & execute test for NetCDF code
629    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
630      old grid files, moved CPP_EEMACROS.h to pkg/exch2
631    o added useSingleCPUIO flag to monitor.F and mon_out.F
632    o added temporary hack for sea-ice dynamics on the cube:
633      metric terms are ignored and it is assumed that
634      there is no sea-ice on cube faces 1, 2, 4, and 5.
635    
636    checkpoint52f_post
637    o added exch2 cube routines to pkg/exch2
638    o modified hs94.cs-32x32x5 to use it
639    o added new grid files to hs94.cs-32x32x5
640    checkpoint52f_pre
641    
642    checkpoint52e_post
643    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
644      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
645    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
646      to work with implicit vertical advection and AB ;
647    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
648    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
649     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
650    checkpoint52e_pre
651    
652    o fix bug in impldiff when Nr=1 or Nr=2.
653    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
654    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
655    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
656      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
657    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
658    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
659    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
660    
661    checkpoint52d_post
662    o re-tiled many expts to allow comparison in multi-processor mode
663      - updated output accordingly
664      - changed hs94.128x64x5 to use intial T from file rather than use the
665        random number generator
666    o add infrastructure in model routines for fizhi and gridalt packages
667    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
668    o changes to permit hi-res, cubed-sphere, configuration
669      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
670      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
671      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
672        of surface winds for the cube
673      (A verification experiment, based on global_ocean.cs32x15, but with
674       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
675       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
676       complete with example surface forcing files and matlab scripts to look
677       at the output and compare it with that of global_ocean.cs32x15.)
678    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
679       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
680       to conform to the common rule.
681    o check-in the first version of the coupler + interfaces for multi-components
682       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
683       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
684       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
685       - ocean and atmos. share the same horizontal grid (no interpolation).
686       - exchanges between component and coupler is done in forward_step
687    o new verification experiment, cpl_aim+ocn:
688       coupled ocean - AIM atmosphere on cs32 grid.
689    
690    checkpoint52d_pre
691    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
692    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
693    
694    checkpoint52c_post
695    o Fixing OPTIONS files for use of exf:
696      - ALLOW_ECCO not needed
697      - ECCO_CPPOPTIONS.h should not be included from
698        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
699        as has been the case in the past
700      - All cal/exf related options are currently set in
701        single header file. Should remain so until we
702        agree on a consistent new policy.
703    o Removed all CPP options for cal package.
704      cal has no more CPP options.
705    o modified STOREs in GAD_ADVECTION
706    o corrected key comp. for passkey
707    
708    checkpoint52b_post
709    o new version: "thsice" of thermodynamic sea-ice pkg:
710     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
711     - modify fluxes but do not change theta directly;
712     - light cleaning of bulk_force pkg (still needed with thsice).
713     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
714       + output_thsice.txt to test thsice & bulk_force pkgs.
715    o put back grid & coriolis monitor output.
716    checkpoint52b_pre
717    
718    o call "do_the_model_io" at the beginning (=> dump initial state)
719    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
720    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
721      (need info on NUMBER_OF_PTRACERS)
722    o missing PTRACERS headers in some routines
723    o default tamc.h in pkg/autodiff supposed to crash
724      to ensure proper customization
725    
726    checkpoint52a_post
727    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
728      - moved surfaceTendencyTice from pkg/seaice to main code
729      - subroutine FREEZE_SURFACE now limits only surface temperature
730        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
731        => new output.txt for global_ocean.cs32x15 & global_with_exf
732      - keep the old version of FREEZE for backward compatibility;
733        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
734      - corresponding modifs for TAF directives
735    o added surface flux output variables to TIMEAVE_STATVARS
736    o time-averaged output for pkg/ptracers
737    o fix problem with ECCO-related divided adjoint
738      snapshot file was missing some ad-variables,
739      but no warning issued by TAF
740    
741    checkpoint52a_pre
742    o some bug fixes for #undef REAL4_IS_SLOW
743    
744    checkpoint52 = ecco_c52_e35
745    o after testing adjoints of checkpoint51u_post
746    
747    checkpoint51u_post
748    o this is the post-merge tag of the ecco-branch
749      (needs another clean checkout and re-testing)
750    o various natl_box_adjoint configs and results
751      but no input fields
752    o obcs adjoint not yet merged!
753    o adding ECCO global 1x1 and 2x2 degree configs
754    o updated/extended some store directives for seaice
755    o pkg/ecco now containes ecco-specific part of cost function
756    o top level routines the_main_loop, forward_step
757      supersede those in model/src/
758      previous input data.cost now in data.ecco
759      (new namelist ecco_cost_nml)
760    o in ctrl/ cleaned some cross-dependencies and updated CPP options
761    
762    checkpoint51t_post
763    o this is the pre-merge tag of the ecco-branch
764    
765    checkpoint51s_post
766    o cleanup: removed various obsolete #define-s
767    o pkg/grdchk
768      - renamed 'ph-grd 3' to 'grad-res'
769      - merged from ecco-branch
770        (remaining bug fixes for obcs gradient checks)
771      - additional high-precision output for testreport
772        (grep for 'precision_grdchk_result')
773    
774    checkpoint51r_post
775    o cleaned up or removed CPP_OPTIONS.h files
776    o updated results for some of the tests to reflect the new
777      optfiles (-ieee: -O0 instead of -O3)
778    
779    checkpoint51q_post
780    o cd_code:
781      - moved cd_scheme.F -> cd_code_scheme.F
782      - separate read_checkpoint from cd_code_ini_vars.F
783      - separated cd_code part from write_checkpoint
784      - updated AD_SOURCE, generated .flow
785      - added CD_CODE_VARS.h to the_main_loop
786      - Moving cd_code specific store dir.s to pkg/cd_code
787    o ctrl package totally restructured
788      - pack/unpack now optional and decoupled from
789        xx_/adxx_ I/O
790      - ctrl_pack/unpack cleaned
791        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
792      - confined inclusion of AD_CONFIG.h to where necessary.
793    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
794    
795    checkpoint51p_post
796    o create initial cd_code package
797      - WARNING: the initialization of fields within packages
798        is broken because INI_FIELDS (where READ_CHECKPOINT is
799        called) is called *before* PACKAGES_INIT_VARIABLES.
800        This seems to be backwards since
801        1) its important to initially zero the entire field including
802           the "halo" region
803        2) zeroing needs to be done *before* reading pickup info
804           and the pickup call might or might not happen in any
805           particular run
806      - this needs an overhaul for R2
807    o cleanup verification/*/code/GMREDI_OPTIONS.h
808    o cleanup testreport
809    
810    checkpoint51o_post
811    o bringing AD-related verif's up to date with genmake2
812      - carbon/
813      - global_ocean.90x40x15/
814      - hs.94.1x64x5/
815      - (front_relax/ )
816    o (more) consistent directory structure for AD-related verif.'s
817    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
818    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
819    o bug fix in find_alpha.F for MDJWF:
820      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
821        change rho -> rho-rhoConst
822      - replace call find_rho to find_rhonum
823    o initialisation of rFlx extended to full array (required by TAF)
824      and shifted to thermodynamics
825    o removed PTRACERS.h in ptracers routine
826    o added surfacetendencyPtr to S/R parameter list pracers_forcing
827    o Correcting initialisations for fVerU, fVerV.
828    o helping TAF to recognize dependency on kUp for
829      fVerU, fVerV
830    o Replacing delZ by delR in pkg/ctrl/
831    checkpoint51o_pre
832    
833    o undid all of cp51 pending some cleanups and discussion
834    o added the [#include "AD_CONFIG.h"] statement to all files that need
835       it for adjoint/tl #defines
836     o re-worked the build logic in genmake2 to support AD_CONFIG.h
837     o removed tools/genmake since it no longer works
838    
839    checkpoint51n_post
840    o modifications to make FREEZE flux visible to pkg/kpp
841      - moved surfaceTendencyTice from pkg/seaice to main code
842      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
843      - subroutine FREEZE now limits only surface temperature
844        (this means new output.txt for global_ocean.90x40x15,
845         global_ocean.cs32x15, and global_with_exf)
846    o added surface flux output variables to TIMEAVE_STATVARS
847    
848    checkpoint51n_pre
849    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
850    o added [#include "AD_CONFIG.h"] to all files that use the following
851      defines:
852      - ALLOW_ADJOINT_RUN
853      - ALLOW_TANGENTLINEAR_RUN
854      - ALLOW_ECCO_OPTIMIZATION
855    
856    checkpoint51m_post
857    o incorporating changes to get TAMC/TAF working in genmake2
858      - added new TAMC/TAF targets to the Makefile
859      - various cleanups related to package handling
860      - these changes should have no impact on the forward model
861    
862    checkpoint51l_post
863    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
864     - faster algorithm for cal_addtime.F
865     - higher precision arithmetic, where needed
866     - pkg/exf *startdate variables changed from calendar date to
867       model integration time
868    
869    checkpoint51l_pre
870    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
871    o enable to apply restoring on S & T only in a latitude band.
872    o update output (external_forcing_surf modif. change truncation errors)
873       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
874    
875    checkpoint51k_post
876    o change default to: useNHMTerms=.FALSE.
877     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
878       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
879     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
880        exp1, ideal_2D_oce
881     - change data file of oceanic exp (leave the results unchanged for now)
882       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
883    o set gravitySign automatically according to the vertical coordinate used
884      (and change sign: back to "logical" value: +1 when R increases downward)
885    o added an include barrier to the default CPP_OPTIONS.h and
886      removed the #include "PACKAGES_CONFIG.h" from it
887    o fix a bug in mom_fluxform (from chk51j_post)
888    
889    checkpoint51j_post
890    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
891    o adjusted some flow directives (dynamics, thermodynamics)
892    o added cubed-sphere case to test cost function
893    o heckpoint_lev?_directives.h now include
894      pkg-specific directives, whenever those are enabled.
895    o Moving pkg-specific flow directives to corresponding pkg
896      Moving pkg-specific differentiation list to corresponding pkg
897      Moving pkg-specific checkpoint-lev storing to corresponding pkg
898      ---> conventions are
899           - pkg_ad.flow
900           - pkg_ad_diff.list
901           - pkg_ad_check_lev?_dir.h
902    
903    checkpoint51i_post
904    o merge of the branch-genmake2
905      - knowingly breaks the older genmake
906      - automatic generation of all ALLOW_${PKG_NAME} defines
907      - new testreport supersedes older testscript
908    o large number of package inclusion and header cleanups
909    checkpoint51i_pre
910    
911    o new output for adjoin of global ocean vector invariant
912    o fix for checkpoint of thermodynamic seaice and bulk_force
913    o Steph gchem various cleanups
914    
915    checkpoint 51h_pre
916    o fixed some single quotes
917    o modify gchem pkg to be more versatile
918    o modifications to clean up dic pkg
919    o add pkg/cfc
920    
921    checkpoint51g_post
922    o provide links for ARPACK and ADM*TLM
923    o start removing verification/vero/
924    o update AD-related stuff
925      (in particular some IF-statements in model/src/ routines)
926    o adding to verification/global_ocean.90x40x15/ adjoint of
927      vector invariant setup
928    
929    checkpoint51f_post
930    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
931    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
932      of tracer Green's fucntions for ocean inversion project.
933    
934    checkpoint51f_pre
935    o Added on-the-fly spatial interpolation capability
936        "USE_EXF_INTERPOLATION" to pkg/exf.
937      - This is a temporary Cartesian-grid hack until
938        the super-duper ESMF coupler becomes available.
939      - See verification/global_with_exf/README for usage example.
940      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
941        flags and modified pkg/seaice accordingly.
942    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
943        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
944        non-local transport term.
945    
946    checkpoint51e_post
947    o pkg/mom_vecinv:
948      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
949      - add time-ave diagnostic of vorticity advection.
950    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
951    o atmospheric geopotential: - include water vapor effect;
952                                - use p^kappa in p* scaling.
953    o land pkg: read initial state from files.
954    o AIM : add stratospheric drag in the upper level
955    
956    checkpoint51d_post
957    o change function ILNBLNK (=> last non-blank char.) to return zero
958      (instead of the string length) when the string. char is empty
959    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
960    o modif's to restore TAMC compatibility
961      - avoid "_d" constructs in PARAMETER declarations
962      - avoid interrupting lines by comment lines
963    o Use cluster local disks for purely local I/O
964      vs. globally visible disks needed for ctrl stuff
965      (merged from ecco-branch)
966      - new active_file_loc... and mdsio_..._loc routines
967      - affected packages: autodiff, ctrl, grdchk, mdsio
968    
969    checkpoint51c_post
970    o introducing integer flag debugLevel
971      - debLevZero: suppress all output
972      - debLevA: standard
973      - debLevB: equivalent to current debugMode=.TRUE.
974    o introducing pathname variable mdsioLocalDir for mdsio
975      that can be specified at runtime
976      (relevant for cluster I/O to local disk)
977    `
978    >>>checkpoint51b_post
979    adjoint of ptracers
980    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
981    o extended state in checkpoint_lev?, etc.
982    o alternative ctrl/cost with tr1 or ptracer
983    o new comlev1_bibj_ptracers
984    o new ptracers.flow
985    o made ptracers_forcing same as external_forcing_s
986    o added verification for adjoint with ptracers
987      - adm. grdchk fail so far
988      - tlm. grdchk OK
989      - checked tapelev/comlev recomputations: OK
990    <<<checkpoint51b_pre
991    
992    checkpoint51a_post
993    o added code for biogeochemistry package
994      - new pkgs: dic, gchem
995      - new subroutine in ptracers
996    o modify code for biogeo packages
997      - in model/src and pkg/ptracers
998    
999    checkpoint51
1000    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1001      - autodiff, ctrl, exf, grdchk, seaice
1002      kept separate packages
1003      - cost, ecco, obcs
1004    o updating verification/internal_wave, verification/lab_sea
1005      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1006    
1007    checkpoint50i_post
1008    o Preparing next differentiable checkpoint and sync
1009      of MAIN vs. ecco-branch
1010      - 1st step: this one is differentiable
1011      - 2nd step: next(! not this) checkpoint will have updated packages
1012                  from ecco-branch)
1013    
1014    checkpoint50h_post
1015    o new package "land": provide surface BC for AIM.
1016    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1017    o AIM: use true log-P extrapolation for near surface temp (= as in
1018        F.Molteni paper) ; update aim.5l_cs output.
1019    o New variable in PARM03 for more flexible pickups
1020    o somewhat cleaned package initialisation sequence for
1021      ctrl/ cost/ ecco/ in packages_... routines
1022    
1023    checkpoint50g_post
1024    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1025      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1026      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1027        made the default because of faster convergence than ADI
1028    
1029    checkpoint50f_post
1030    o exf totally restructured
1031      - replaced all exf_set_ routines by one generic exf_set_gen.F
1032        and made sure it's still differentiable
1033      - split exf_getffields.F into new exf_bulkformulae.F
1034      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1035      - updated adjoint/makefile and relevant verif. accordingly
1036    
1037    checkpoint50f_pre
1038     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1039          + change Evap over land. (update aim.5l_cs output)
1040     o added missing .cvsignores and made uniform across expts
1041     o changed configuration of tidal_basin_2d expt
1042     o added pkg/debug functions for tracing code in fatal crashes
1043     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1044     o new fn in pkg/monitor to stop model if solution grows too big
1045     o removed lots of single quotes from comments
1046    
1047    checkpoint50e_post
1048    o make KPP work with PTRACERS
1049     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1050       nearly a copy of kpp_transport_s
1051     - there is no analogue to SurfaceTendencyS, so I have to use
1052       gPtr(of the surface layer) instead
1053    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1054    checkpoint50e_pre
1055    
1056    checkpoint50d_post
1057    o change kpp output from multiple-record state files to single-record state
1058      files analogous to write_state.F
1059    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1060      analogous to the cg2d-related output.
1061    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1062      so that writing to internal file fn (with length 512) fails.
1063    checkpoint50d_pre
1064    
1065    checkpoint50c_post
1066    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1067    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1068    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1069    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1070    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1071    
1072    checkpoint50c_pre
1073    Merging from release1_p13:
1074    o bug fix for pkg/seaice dynamic solver
1075    o Added SEAICE_initialHEFF to pkg/seaice
1076    
1077    checkpoint50b_post
1078    o store u*,v* in gU,V instead of in guNm1,gvNm1
1079    o in order to put the momForcing out of the Adams-Bashforth:
1080      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1081      to timestep.F
1082    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1083    o re-generate output for highly sensitive test-exp:
1084       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1085    
1086    checkpoint50b_pre
1087    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1088    o corrected CPP option mismatch in exf_Bulk... functions for case
1089      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1090    
1091    checkpoint50a_post
1092    o Bug fix for merging between c50 and KPP.
1093      ikey was passed from thermodynamics to kpp_calc via
1094      common block rather than being recomputed in kpp_calc,
1095      in contradiction with new key itdkey.
1096      New key ikppkey created, and tamc.h headers updated.
1097    
1098    checkpoint50
1099    - 2nd step of merge with ecco-branch:
1100      merge changes in ecco-branch back into main trunk
1101    - bug fix in find_alpha
1102    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1103    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1104    - merged some sliced AD support routines
1105    
1106    checkpoint49
1107    merged from ecco-branch:
1108    o exf:
1109      - Enable initialisation of forcing fields to constant
1110        (runtime) values.
1111      - in exf_getffields.F
1112        Reduce i-/j-loop to interior domain, discarding overlaps.
1113        That also fixes wrong TAF-key computations for key_1, key_2
1114        with bulf formulae.
1115      - exf_init.F modify #ifdef for exf_init_evap
1116      - exf_getffieldrec.F, ctrl_getrec.F
1117        The following INT-usages are not safe:
1118          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1119          fldcount = int(fldsecs/fldperiod) + 1
1120        and were modified.
1121    o autodiff: checkpoint_lev...
1122      - updated storing for bulk formulae (some arrays were missing)
1123      - added state for seaice package
1124      - synchronized with main branch
1125    o DIVA:
1126      Modif.s in
1127      - the_main_loop.F
1128      - the_model_main.F
1129      and added cost_final_restore.F cost_final_store.F
1130      o With these changes, it is possible to fully separate
1131        the first forward run to compute the cost function (mdthe_main_loop)
1132        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1133        into separate model executions.
1134        This enables better tuning of DIVA to given queue sizes.
1135      o Loss of cost function value in consecutive DIVA runs is
1136        fixed by storing to 'costfinal' file.
1137      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1138        beginning/end of adjoint integration is accounted for.
1139      The current changes apply to TAF-1.4.26.
1140      TAF has one remaining bug, requiring one manual change
1141      (see MITgcm manual).
1142    o cal: synchronized between MAIN and ecco-branch
1143    
1144    checkpoint48i_post
1145    o Changes to restore differentiability of code w.r.t. previous tag
1146      (mostly adding new routines to make list and replacing
1147      pressure by totPhiHyd).
1148    o Updated and merged grdchk package
1149      - has both ADM and TLM checks
1150      - works for single- and multi-proc.
1151      - output cleaned
1152      - worked successfully for parallel DIVA
1153    o genmake:
1154      - Adding -platform=SP4
1155      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1156    o Modif. for DIVA:
1157      ctrl_unpack should not be called in intermediate DIVA interval.
1158      (similar thing would apply for active files such as
1159      tbar, sbar, psbar, which should not be reinitialised;
1160      only relevant for ecco-branch)
1161    
1162    checkpoint48h_post
1163    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1164    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1165    o Added SEAICE_initialHEFF to pkg/seaice
1166    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1167    
1168    checkpoint48g_post
1169    --- EOS:
1170    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1171      store total Potential in totPhyHyd for diagnostics & EOS.
1172    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1173    --- Pressure/geopotential gradient:
1174    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1175    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1176      ( changes results of global_ocean_pressure )
1177    o NLFS + z-coord.: add eta*Rho' contribution.
1178    o accurate phiHyd when using interface-W at the middle between 2 centers
1179     ( changes results of ideal_2D_oce )
1180    o includes r* 2nd term in potential gradient.
1181    
1182    checkpoint48f_post
1183    Merging from release1_p12:
1184    o Modifications for using pkg/exf with pkg/seaice
1185      - improved description of the various forcing configurations
1186      - added basic radiation bulk formulae to pkg/exf
1187      - units/sign fix for evap computation in exf_getffields.F
1188      - updated verification/global_with_exf/results/output.txt
1189    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1190      (SBO) core products, including oceanic mass, center-of-mass,
1191      angular, and bottom pressure (see pkg/sbo/README.sbo).
1192    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1193      to avoid negative values in shallow regions.
1194      - updated verification/natl_box/results/output.txt
1195      - updated verification/lab_sea/results/output.txt
1196    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1197    o Added useSingleCpuIO option (see PARAMS.h).
1198    o Updated useSingleCpuIO option in mdsio_writefield.F to
1199      work with multi-field files, e.g., for single-file pickup.
1200    o pkg/seaice:
1201      - bug fix in growth.F: QNET for no shortwave case
1202      - added HeffFile for specifying initial sea-ice thickness
1203      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1204    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1205      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1206    o pkg/seaice:
1207      - adjoint-friendly modifications
1208      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1209    
1210    checkpoint48e_post
1211    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1212    o dynamics: change definition of computational domain & adapt mom_fluxform
1213      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1214    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1215        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1216        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1217        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1218        inverted_barometer solid-body.cs-32x32x1
1219      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1220    
1221    checkpoint48d_post
1222    o in preparation for r*:
1223     a) use pre-computed gradient of hydrostatic potential:
1224        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1225     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1226        => affects results of glob_oce_pressure (different truncation error)  
1227      update output.txt of ideal_2D_oce & global_ocean_pressure
1228    
1229    checkpoint48d_pre
1230    o in preparation for r*:
1231      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1232      pass the 2 comp. of the grad. as arguments to momentum S/R.
1233      but for the moment, only used if it does not change the results.
1234    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1235    
1236    checkpoint48c_post
1237    Modifications in treatment of initial flux forcing controls
1238    to avoid extra storing of flux fields.
1239    
1240    checkpoint48c_pre
1241    o Added tidal_basin_2d experiment (currently 1D!)
1242    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1243    
1244    checkpoint48b_post
1245    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1246     (modification to pressure gradient not yet implemented)
1247    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1248      (for U & V) that are used for vertical advection of momentum.
1249    
1250    checkpoint48a_post
1251    o In preparation for r*, use temp. array to compute vertical transport
1252       in flux-form momentum pkg. => change results of few test-exp.
1253      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1254                        lab_sea, natl_box & plume_on_slope
1255    
1256    checkpoint48
1257    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1258    
1259    checkpoint47j_post
1260    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1261    o moved adexch from forward_step to addummy_in_stepping
1262    o added exch in ctrl_map_...
1263    o aveFreq.=0. at end of cost_final to avoid overwrite in
1264      reverse checkpointing loop
1265    o Yet more changes in gmredi:
1266      * adgmredi_calc_tensor
1267        avoiding all recomputation of gmredi_slope_limit
1268      * adgmredi_x/y/rtransport
1269        added flag for excessive storing to avoid recomp. of
1270        u/v/rtans, dTdx/y/z
1271        -> this is not really necessary and very memory-consuming
1272      * adgmredi_slope_psi:
1273        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1274      * gmredi_slope_limit
1275        re-activated full calculation of taperfct for case 'ac02'
1276    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1277    
1278    checkpoint47i_post
1279    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1280    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1281      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1282    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1283    o gmredi: fix few bugs.
1284    
1285    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1286    This will be a good checkpoint to plug into the ecco-branch.
1287    o few modif.'s to get latest version adjointed
1288      (mainly kick out code in ini_linear_phisurf)
1289    o modif's to run adjoint with exactConserv
1290    o case GM_BOLUS_ADVEC should be cleaned
1291      S/R gmredi_slope_psi should be cleaned
1292    o verification/carbon now has exactConserv=.TRUE.
1293    
1294    checkpoint47g_post
1295    o time-average AIM output: becomes independent from statvars time-average
1296      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1297    o After TAF bug fix:
1298      Tested adjoint of gmredi package.
1299      Tests were done with checkpoint47 rather than with latest
1300      checkpoint47f_post since the latter is broken for the adjoint
1301      verification/carbon/ contains both ADM and TLM gradient checks.
1302    Here they are, before they get changed/lost/stolen.
1303    Mostly modif.'s to fix numerical sensitivities.
1304    Gradient checks OK for
1305    - GM_taper_scheme:
1306      * clipping
1307      * ac02
1308      * linear
1309      * glw91
1310      * dm95
1311      * ldd97
1312    - GMREDI_OPTIONS:
1313      * GM_VISBECK_VARIABLE_K
1314      * GM_NON_UNITY_DIAGONAL
1315      * GM_EXTRA_DIAGONAL
1316      * GM_BOLUS_ADVEC
1317    in conjunction with data.gmredi parameters to be checked in
1318    in a few minutes under verification/carbon/code/
1319    
1320    checkpoint47f_post
1321    Merging from release1_p10:
1322    o modifications for using pkg/exf with pkg/seaice
1323      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1324        and SEAICE_EXTERNAL_FLUXES
1325      - pkg/exf CPP options EXF_READ_EVAP and
1326        EXF_NO_BULK_COMPUTATIONS
1327      - usage examples are Experiments 8 and 9 in
1328        verification/lab_sea/README
1329      - verification/lab_sea default experiment now uses
1330        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1331    
1332    checkpoint47e_post
1333    o created a tag prior to creating a branch
1334    
1335    checkpoint47d_post
1336    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1337      at the bottom boundary had an erroneous half slip boundary condition
1338    o added bottom drag and no slip boundary condition capabilities to
1339      oceanic pressure coordinates code
1340    o added new verification experiment global_ocean_pressure, this experiment is
1341      also described in the tutorial section of the manual
1342    checkpoint47d_pre
1343    
1344    checkpoint47c_post
1345    o Added a verification experiment for a global cubed-sphere ocean run
1346      -  verification/global_ocean.cubed32x32x30
1347      -  uses pkg/therm_seaice and pkg/bulk_forcing
1348    
1349    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1350    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1351      when using P-coordinate; only implemented for atmospheric config.
1352    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1353      NOTES: requires option NONLIN_FRSURF to be "#define".
1354    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1355    
1356    checkpoint47b_post
1357    Merging from release1_p9:
1358    o pkg/seaice
1359      - removed GOTO's and added taf directives
1360      - double precision constants to reduce the g77 (Linux)
1361        to F77 (SGI) differences reported in release1_p8
1362    o tools/genmake
1363      - added SGI options
1364    o verification/testscript
1365      - updated to that of checkpoint47a_post
1366    o verification/global_ocean.90x40x15/input/eedata
1367      - modified for SGI f77 compatibility
1368    o verification/lab_sea
1369      - added description of sea-ice model
1370      - added missing matlab routines
1371      - added test of thermodynamics parallelization
1372    
1373    checkpoint47a_post
1374    o new pkg: aim_v23
1375     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1376       for now, keep the same surface forcing as before.
1377     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1378     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1379     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1380    o add diagnostic of surface correction term in monitor output
1381    
1382    o bulk_force and therm_seaice
1383    - Two packages:  bulk_force (Bulk forcing)
1384      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1385    - Earlier integration from Stephaine Dutkiewicz
1386      and Patrick Heimbach.
1387    - Two ifdef statements for compile time,
1388       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1389    
1390    checkpoint47
1391    differentiable version of checkpoint46n_post
1392    o bug fix in quasihydrostaticterms
1393    o * "clean" adjoint code (in terms of extensive recomputations)
1394        can now be obtained for all GMREDI options (i.e. for
1395        - GM_VISBECK_VARIABLE_K
1396        - GM_NON_UNITY_DIAGONAL
1397        - GM_EXTRA_DIAGONAL
1398        - GM_BOLUS_ADVEC )
1399      * However, wrong gradient check problem remains unsolved.
1400      * New CPP options have been introduced for different
1401        tapering schemes
1402    o external_fields_load now part of differentiation list
1403    o pressure needs multiple storing;
1404      would be nice to have store_pressure at beginning or
1405      end of forward_step, e.g. by having phiHyd global (5-dim.)
1406      (NB: pressure is needed for certain cases in find_rho,
1407      which is also invoked through convective_adjustment).
1408    o recomputations in find_rho for cases
1409     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1410    o #define ATMOSPHERIC_LOADING should be differentiable
1411    o ini_forcing shifted to begining of initialise_varia
1412    o Incorporating QNVS line search routines into MITgcm
1413      (this is separate code, and therefore not under pkg)
1414      lsopt/, optim/
1415    o Updated verification/carbon/
1416      - #define GM_VISBECK_VARIABLE_K
1417      - GM_taper_scheme    = 'ldd97'    
1418    
1419    checkpoint46n_post
1420    Merging from release1_p8:
1421    o verification/natl_box:
1422      updating new external_fields_load routine
1423    o New package: pkg/seaice
1424      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1425      The sea-ice code is based on Hibler (1979-1980).
1426      Two sea-ice dynamic solvers, ADI and LSR, are included.
1427      In addition to computing prognostic sea-ice variables and diagnosing
1428      the forcing/external data fields that drive the ocean model,
1429      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1430      The implied surface heat flux is then stored in variable
1431      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1432      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1433      non-local transport term.  Because this call precedes model
1434      thermodynamics, temperature under sea-ice may not be "exactly" at
1435      the freezing point by the time theta is dumped or time-averaged.
1436      N.B.: fairly large differences in accuracy occur across
1437            different platforms/compilers; comparison between
1438            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1439            generated output gives:
1440       T           S           U           V
1441      C D M    c        m  s        m  s        m  s        m  s
1442      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1443      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1444      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1445    
1446      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1447    o GAD:
1448      - generated new common blocks to account for call of
1449        same gad routines with differing traceridentities
1450        (needed to modify tracerIdentity indices in GAD.h)
1451      - generated separate common blocks for case useCubedSphereExchange
1452        (Department of Futurology)
1453      - parameter lists to gmredi_?transport: added tracerIdentity
1454      - added new key indices to tamc.h
1455    o external_fields_load:
1456      - added this routine to TAF list
1457      - needed to make some common blocks global and additional storing
1458        along the same lines as exf package (checkpoint_lev?_directives.h)
1459    o exf:
1460      updated external forcing package
1461      - bug fixes carried over from ecco-branch
1462        (missing OBCS_OPTIONS.h in two routines)
1463      - enable easy to use "no forcing".
1464      - added exf I/O for atmospheric loading
1465      - added exf I/O for runoff data
1466      - transfered scaling between exf <-> MITgcm to exf namelist
1467    o Adding new verification experiment global_with_exf.
1468      This verification experiment is almost identical to the
1469      global_ocean.90x40x15 experiment, except that it uses
1470      the exf (and cal) package instead of the
1471      external_fields_load routine (cf README file).
1472    
1473    checkpoint46m_post
1474    o modified testscript to return -- when there are no lines of "%MON" output
1475    o added new flag "quasiHydrostatic" for QH mode
1476      and new routine quasihydrostaticterms()
1477    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1478      New routine: mom_u_coriolis_nh()
1479    o fixed sign of non-hydrostatic metric terms in u and v equations.
1480      Depend on correct sign of gravitySign.
1481    o added work.pc* to .cvsignore in aim directories using ifc
1482    o introduced flag for controllin non-hydrostatic metric terms
1483    o removed gravitySign from PARM04
1484    o switched to g77/ifc from pgf77 in aim experiments
1485    
1486    checkpoint46l_post
1487    o made convective adjustment work with pressure coordinates:
1488     - changed the direction of k-loop in convective_adjustment.F for the
1489       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1490     - adjusted the reference pressure k-index in convective_adjustment.F
1491     - adjusted the convection condition in convect.F (in analogy to
1492       calc_ivdc.F)
1493     - convective_adjustment no longer computes anything on the halos
1494     - removed the warnings about negative salinity from find_rho.F and
1495       find_alpha.F; instead the new routine look_for_neg_salinity, called
1496       at the beginning of find_rho, find_alpha, and find_beta, does a
1497       check of the entire slice, if CPP-option
1498       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1499    checkpoint46l_pre
1500    
1501    checkpoint46k_post
1502    o fixed the verification/global_ocean.90x40x15 experiment:
1503     - new bathymetry (the world according to A., JMC, and M.)
1504     - new initial fields and forcing fields (*.bin files)
1505     - new POLY3.COEFFS (for the next release one should switch to a full
1506       equation of state: JMD95P or MDJWF)
1507     - fixed several errors and redundancies in the data file
1508     - experiment uses looped cells
1509     - added matlab directory with diagnostic scripts for plotting of output
1510    
1511    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1512     - read AIM physics parameters from a file (data.aimphys)
1513     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1514    
1515    checkpoint46j_post
1516    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1517    o move wVel computation at the end of the time step, in S/R integr_continuity
1518    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1519    o update timeave pkg for wVel diagnostic.
1520    checkpoint46j_pre
1521    
1522    checkpoint46i_post
1523    o Clean up AIM package (and keep the results unchanged):
1524      include CPP_OPTION and use IMPLICT NONE in all routines ;
1525      declare all the variables _RL ; use _d 0 for all numerical constants.
1526      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1527    
1528    checkpoint46h_post
1529    o cleaned up the use of rhoNil and rhoConst.
1530      - rhoNil should only appear in the LINEAR equation of state, everywhere
1531        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1532        and the dynamical equations are all divided by rhoConst
1533    o introduced new parameter rhoConstFresh, a reference density of fresh
1534      water, to remove the fresh water flux's dependence on rhoNil. The default
1535      value is 999.8 kg/m^3
1536    o cleanup up external_forcing.F and external_forcing_surf.F
1537      - can now be used by both OCEANIC and OCEANICP
1538    checkpoint46h_pre
1539    
1540     Added code to convert surface volume flux (fresh water) into
1541     a mass flux when using P coordinates in the ocean (OCEANICP).
1542     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1543    
1544    checkpoint46g_post
1545    o Include a new diagnostic variable phiHydLow for the ocean model
1546      - in z-coordinates, it is the bottom pressure anomaly
1547      - in p-coordinates, it is the sea surface elevation
1548      - in both cases, these variable have global drift, reflecting the mass
1549        drift in z-coordinates and the volume drift in p-coordinates
1550      - included time averaging for phiHydLow, be aware of the drift!
1551    o depth-dependent computation of Bo_surf for pressure coordinates
1552      in the ocean (buoyancyRelation='OCEANICP')
1553      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1554        Theta, Salinity, and Pressure in the parameter list. This routine is
1555        presently contained in find_rho.F. This routine does not give the
1556        correct density for 'POLY3', which would be a z-dependent reference
1557        density.
1558    o cleaned up find_rho
1559      - removed obsolete 'eqn' from the parameter list.
1560    o added two new verification experiments: gop and goz
1561      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1562    checkpoint46g_pre
1563    
1564    checkpoint46f_post
1565    o Enable tangent linear (forward mode) gradient checks:
1566      - extended active file handling to g_... files
1567      - added TANGENT_SIMULATION to theSimulationMode
1568      - extended grdchk package accordingly
1569    o added tangent linear setup in verification/carbon/code_ftl
1570    o added adjoint setup in verification/front_relax/code_ad
1571    
1572    checkpoint46e_post
1573    o Added new equation of state -> MDJWF
1574      - EOS of McDougall et al., 2002, JAOT, submitted
1575      - caveat: the equation of state is only valid for a smaller (more
1576        realistic?) range of values than JMD95P/Z and UNESCO
1577      - added masks to the calculation of pressure in store_pressure
1578      - added more check values for density in check_eos (ini_eos.F), some of
1579        the old check values are out of the range of the MDJWF-eos, so don't
1580        expect perfect matches for those
1581    checkpoint46e_pre
1582    
1583    checkpoint46d_post
1584    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1585      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1586      case of pressure coordinates. eosType='JMD95Z' in
1587      combination with buoyancyRelation='OCEANICP' now causes an error.
1588    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1589      in find_alpha/beta.
1590    checkpoint46d_pre
1591    
1592    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1593      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1594    
1595    checkpoint46c_post
1596    o Changes necessary for ocean in p-coordinates
1597     -  Added new buoyancy relation = 'OCEANICP'
1598     -  Added new parameters = gravitySign (this used to be contained inside
1599        the factor dRdZ which I added when we first switched to R coordinates).
1600     X GM/Redi is not compatible (yet)
1601     X bottom drag and no-slip need to be debugged.
1602    checkpoint46c_pre
1603    
1604    checkpoint46b_post
1605    o Added new equation of state -> JMD95Z and JMD95P
1606      - EOS of Jackett and McDougall, 1995, JAOT
1607      - moved all EOS parameters into EOS.h
1608      - new routines ini_eos.F, store_pressure.F
1609    o Added UNESCO EOS, but not recommended because it requires
1610      in-situ temperature (see JMD95)
1611    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1612      unesco.f to be used with POLY3
1613    checkpoint46b_pre
1614    
1615    checkpoint46a_post
1616    o Added (atmospheric) pressure loading
1617      - new field in FFIELDS.h, etc...
1618      - new cpp flag ATMOSPHERIC_LOADING
1619    o Changed hFacC to _hFacC in calc_phi_hyd.F
1620    o Added SHORTWAVE_HEATING to some files for consistency
1621    checkpoint46a_pre
1622    
1623    checkpoint46
1624    further merges from release1_p5
1625    o new ctrl package
1626      - adopted from ECCO environment to enable optimization
1627      - added Eliassen Palm fluxes to controls
1628    o added Eliassen Palm flux controls to gradient check package
1629    o cost package
1630      - Compatible with new ctrl package
1631      - added Eliassen Palm cost hooks
1632      - modif's of existing cost functions
1633    o Adjoint-related bug fixes in kpp:
1634      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1635      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1636    o autodiff package
1637      - flow directives:
1638        + new for S/R do_the_model_io
1639        + enhanced for S/R checkpoint
1640        + new gmredi.flow
1641      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1642        disable adcommon.h/g_common.h by default.
1643      - fixed problem for adjoint of global_max
1644    o modified verification/carbon/
1645    o New setup for adjoint of global_ocean
1646    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1647    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1648    o incorporated hooks for sponge layer code (external_forcing.F)
1649    
1650    checkpoint45d_post
1651    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1652    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1653      (affects plume_on_slope "cg2d" output)
1654    o add new parameter deltaTfreesurf for free-surface time stepping
1655    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1656    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1657    o change phiMin in exp1 (to agree with documentation)
1658    o add new flags:
1659     - T,S forcing inside/outside Adams-Bashforth
1660     - turn off temp,salt advection and/or forcing
1661     - for each tracer, define internal flag for multiDimAdvection & A-B
1662    o monitor: change definition of KE to check conservation of Energy
1663    
1664    checkpoint45c_post
1665    o Removed f90 comments ("!")
1666    o Modified initialisations to enable exf package for MITgcm
1667      (without invoking ECCO_PACKAGE).
1668    o modifications to gradient check package (Martin Losch)
1669      - enable centered differences
1670      - modified format of standard output
1671    
1672    checkpoint45b_post
1673    o cleaned exchange calls in cg2d
1674    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1675    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1676      to configure barotropic setup (Martin Losch)
1677    o moved some initialisations within bi,bj loop in dynamics
1678      (TAF flow dependency)
1679    o in initialise_varia, moved call packages_init_variables
1680      before convective_adjustment_init
1681      (corresponding adjustment of TAF tape initialisation).
1682    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1683    
1684    checkpoint45a_post
1685    o compute Rho over the whole domain (extend iMin,jMin indices)
1686    o specific exchange for X-slice domain (case Ny=1)
1687  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1688  o solve_for_pressure : set cg2d_x to zero where OBCS are applied  o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1689    

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